/* roulang page: index */
:root {
            --bg-deep: #050D1A;
            --bg-main: #0A1428;
            --bg-soft: #0F1F38;
            --glass: rgba(22, 44, 76, .72);
            --glass-strong: rgba(10, 20, 40, .88);
            --line: rgba(155, 205, 255, .16);
            --line-strong: rgba(155, 205, 255, .28);
            --text-title: #F2F7FF;
            --text-body: #C0D2E8;
            --text-dim: #829AB8;
            --brand: #3D8BFF;
            --brand-light: #28C0F5;
            --accent: #FFC761;
            --success: #2ED3A6;
            --danger: #FF6B6B;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-panel: 0 18px 60px rgba(0, 0, 0, .28);
            --shadow-hover: 0 14px 38px rgba(0, 0, 0, .34);
            --border: 1px solid var(--line);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
            --transition: all .25s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            background-color: var(--bg-main);
            color: var(--text-body);
            line-height: 1.8;
            overflow-x: hidden;
            padding-bottom: 88px;
            background-image:
                radial-gradient(circle at 18% 12%, rgba(61, 139, 255, .14), transparent 24%),
                radial-gradient(circle at 84% 20%, rgba(40, 192, 245, .08), transparent 18%),
                radial-gradient(circle at 72% 88%, rgba(120, 90, 255, .08), transparent 26%);
            background-repeat: no-repeat;
            background-attachment: fixed;
        }

        a {
            color: var(--brand-light);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        .container {
            max-width: 1280px;
        }

        .section {
            padding-top: 88px;
            padding-bottom: 88px;
        }

        .section-head {
            margin-bottom: 44px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border: 1px solid var(--line);
            border-radius: 999px;
            background: rgba(61, 139, 255, .08);
            color: var(--brand-light);
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 18px;
            letter-spacing: .04em;
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--text-title);
            font-weight: 700;
            line-height: 1.35;
            margin-top: 0;
        }

        h1 {
            font-size: 42px;
            letter-spacing: -.02em;
            line-height: 1.3;
        }

        h2 {
            font-size: 30px;
            letter-spacing: -.02em;
        }

        h3 {
            font-size: 20px;
            line-height: 1.5;
        }

        .text-dim {
            color: var(--text-dim);
        }

        .text-bright {
            color: var(--text-title);
        }

        .btn {
            border-radius: 999px;
            font-weight: 600;
            border: 1px solid transparent;
            padding: 10px 22px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: var(--transition);
            letter-spacing: .01em;
        }

        .btn-primary-glow {
            background: linear-gradient(120deg, var(--brand), var(--brand-light));
            color: #fff !important;
            border: 1px solid rgba(255, 255, 255, .12);
            box-shadow: 0 8px 30px rgba(61, 139, 255, .35), 0 12px 40px rgba(0, 0, 0, .2);
        }

        .btn-primary-glow:hover,
        .btn-primary-glow:focus {
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 14px 40px rgba(61, 139, 255, .52), 0 18px 46px rgba(0, 0, 0, .25);
        }

        .btn-secondary-ghost {
            background: rgba(155, 205, 255, .08);
            color: var(--text-title) !important;
            border: 1px solid var(--line);
            backdrop-filter: blur(8px);
        }

        .btn-secondary-ghost:hover,
        .btn-secondary-ghost:focus {
            border-color: rgba(155, 205, 255, .38);
            background: rgba(155, 205, 255, .14);
            transform: translateY(-2px);
            color: #fff !important;
        }

        .btn-amber-soft {
            background: rgba(255, 199, 97, .12);
            color: var(--accent) !important;
            border: 1px solid rgba(255, 199, 97, .32);
        }

        .btn-amber-soft:hover,
        .btn-amber-soft:focus {
            background: rgba(255, 199, 97, .2);
            border-color: rgba(255, 199, 97, .6);
            color: #fff !important;
            transform: translateY(-2px);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1090;
            background: rgba(6, 12, 25, .86);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--line);
            transition: var(--transition);
        }

        .site-header.has-scrolled {
            background: rgba(4, 10, 22, .96);
            box-shadow: 0 12px 40px rgba(0, 0, 0, .28);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 17px 0 14px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -.01em;
            line-height: 1.1;
            white-space: nowrap;
        }

        .brand-logo:hover {
            color: #fff;
        }

        .brand-logo .logo-em {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--brand), var(--brand-light));
            color: #fff;
            font-size: 17px;
            box-shadow: 0 0 0 6px rgba(61, 139, 255, .12);
        }

        .brand-logo .logo-main {
            font-size: 21px;
        }

        .brand-logo .logo-sub {
            display: block;
            font-size: 12px;
            color: var(--text-dim);
            font-weight: 500;
            letter-spacing: .12em;
            margin-top: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-actions .btn {
            padding: 9px 20px;
            font-size: 14px;
        }

        .header-tabs-row {
            border-top: 0;
            padding-bottom: 12px;
        }

        .seg-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            white-space: nowrap;
            scroll-behavior: smooth;
        }

        .seg-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 16px;
            border-radius: 999px;
            color: var(--text-body);
            border: 1px solid transparent;
            font-size: 14px;
            font-weight: 500;
            line-height: 1.4;
            transition: var(--transition);
            flex: 0 0 auto;
        }

        .nav-tab i {
            font-size: 13px;
            opacity: .85;
        }

        .nav-tab:hover {
            color: #fff;
            background: rgba(155, 205, 255, .09);
            border-color: var(--line);
        }

        .nav-tab.active {
            color: #fff;
            background: rgba(61, 139, 255, .18);
            border-color: rgba(61, 139, 255, .45);
            box-shadow: 0 0 18px rgba(61, 139, 255, .28);
        }

        .nav-tab:focus-visible {
            outline: 2px solid var(--brand-light);
            outline-offset: 2px;
        }

        .hero-section {
            position: relative;
            overflow: hidden;
            padding-top: 112px;
            padding-bottom: 110px;
            background-image:
                linear-gradient(105deg, rgba(10, 20, 40, .96) 20%, rgba(10, 20, 40, .72) 58%, rgba(10, 20, 40, .55) 100%),
                url('/assets/images/backpic/back-1.webp');
            background-position: center, center;
            background-size: cover, cover;
            background-repeat: no-repeat;
        }

        .hero-section::before {
            content: "";
            position: absolute;
            right: -140px;
            top: -100px;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: rgba(61, 139, 255, .2);
            filter: blur(100px);
            pointer-events: none;
        }

        .hero-section .container {
            position: relative;
            z-index: 2;
        }

        .hero-copy {
            max-width: 560px;
        }

        .hero-overline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--accent);
            border: 1px solid rgba(255, 199, 97, .32);
            border-radius: 999px;
            padding: 6px 14px;
            background: rgba(255, 199, 97, .08);
            margin-bottom: 26px;
        }

        .hero-title {
            margin-bottom: 18px;
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-body);
            margin-bottom: 34px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 34px;
        }

        .trust-row {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--text-dim);
            font-size: 13px;
        }

        .trust-row span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .trust-row i {
            color: var(--success);
            font-size: 15px;
        }

        .hero-visual {
            position: relative;
            max-width: 580px;
            margin-left: auto;
        }

        .preview-card {
            background: rgba(7, 18, 36, .74);
            border: 1px solid var(--line);
            border-radius: 28px;
            box-shadow: var(--shadow-panel);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            overflow: hidden;
            transform: rotate(1deg);
            transition: var(--transition);
        }

        .preview-card:hover {
            transform: translateY(-6px) rotate(0deg);
            box-shadow: 0 24px 70px rgba(0, 0, 0, .36);
        }

        .preview-bar {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 15px 18px;
            border-bottom: 1px solid var(--line);
        }

        .preview-bar i {
            margin-left: auto;
            color: var(--text-dim);
            font-size: 14px;
        }

        .preview-bar span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #1b3048;
        }

        .preview-bar span:nth-child(1) {
            background: var(--danger);
        }

        .preview-bar span:nth-child(2) {
            background: var(--accent);
        }

        .preview-bar span:nth-child(3) {
            background: var(--success);
        }

        .preview-cover {
            position: relative;
            overflow: hidden;
            height: 190px;
        }

        .preview-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: saturate(.92) contrast(1.02);
        }

        .preview-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 20, 40, .14) 0%, rgba(7, 18, 36, .78) 100%);
        }

        .preview-tag {
            position: absolute;
            left: 16px;
            bottom: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, .16);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
            font-size: 12px;
            border-radius: 999px;
            padding: 4px 12px;
            backdrop-filter: blur(10px);
        }

        .preview-body {
            padding: 20px 22px 24px;
        }

        .preview-label {
            display: block;
            color: var(--brand-light);
            font-size: 13px;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .preview-body p {
            color: var(--text-body);
            font-size: 14px;
            margin-bottom: 18px;
        }

        .preview-mini {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border: 1px solid var(--line);
            border-radius: 14px;
            background: rgba(155, 205, 255, .05);
        }

        .preview-mini i {
            color: var(--accent);
        }

        .preview-mini span {
            font-size: 13px;
            color: var(--text-body);
        }

        .notice-bar {
            border-bottom: 1px solid var(--line);
            background: rgba(15, 31, 56, .64);
            font-size: 14px;
            color: var(--text-body);
            padding: 13px 0;
            position: relative;
            z-index: 3;
        }

        .notice-bar .notice-inner {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .notice-bar .notice-inner .notice-label {
            color: var(--accent);
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .notice-bar p {
            margin: 0;
        }

        .feature-grid {
            display: flex;
            flex-wrap: wrap;
        }

        .feature-card {
            background: var(--glass);
            border: var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-panel);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 30px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--line-strong);
            box-shadow: var(--shadow-hover);
        }

        .feature-primary {
            min-height: 420px;
            background-image:
                linear-gradient(115deg, rgba(15, 31, 56, .95) 5%, rgba(15, 31, 56, .83) 48%, rgba(61, 139, 255, .2) 100%),
                url('/assets/images/backpic/back-2.png');
            background-position: right top;
            background-size: cover;
            border: var(--border);
            border-radius: var(--radius-lg);
            padding: 36px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            transition: var(--transition);
            box-shadow: var(--shadow-panel);
        }

        .feature-primary:hover {
            border-color: rgba(61, 139, 255, .48);
            transform: translateY(-4px);
            box-shadow: 0 24px 70px rgba(0, 0, 0, .36);
        }

        .feature-primary .big-icon {
            width: 58px;
            height: 58px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--brand), var(--brand-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 24px;
            margin-bottom: 28px;
            box-shadow: 0 12px 30px rgba(61, 139, 255, .3);
        }

        .feature-primary h3 {
            font-size: 27px;
            margin-bottom: 14px;
        }

        .feature-primary p {
            max-width: 80%;
            color: var(--text-body);
            font-size: 16px;
        }

        .feature-primary a {
            margin-top: 22px;
        }

        .feature-narrow .narrow-icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--brand-light);
            background: rgba(61, 139, 255, .14);
            border: 1px solid rgba(61, 139, 255, .2);
            margin-bottom: 20px;
        }

        .feature-narrow h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .feature-narrow p {
            font-size: 14px;
            color: var(--text-body);
            margin-bottom: 12px;
        }

        .feature-half {
            background: var(--glass);
            border: var(--border);
            border-radius: var(--radius-lg);
            padding: 26px;
            height: 100%;
            transition: var(--transition);
        }

        .feature-half:hover {
            transform: translateY(-3px);
            border-color: rgba(61, 139, 255, .38);
            box-shadow: var(--shadow-hover);
        }

        .scene-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-light);
        }

        .scene-link i {
            font-size: 12px;
            transition: transform .25s ease;
        }

        .scene-link:hover {
            color: var(--accent);
        }

        .scene-link:hover i {
            transform: translateX(4px);
        }

        .scene-block {
            margin-top: 60px;
        }

        .scene-media {
            position: relative;
            border-radius: 26px;
            overflow: hidden;
            border: var(--border);
            box-shadow: var(--shadow-panel);
        }

        .scene-media img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            display: block;
            transition: transform .4s ease;
        }

        .scene-block:hover .scene-media img {
            transform: scale(1.02);
        }

        .scene-illustration {
            position: absolute;
            right: 14px;
            top: 14px;
            background: rgba(4, 10, 22, .7);
            border-radius: 999px;
            padding: 5px 12px;
            font-size: 12px;
            color: #fff;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, .12);
        }

        .scene-copy {
            padding: 14px 6px;
        }

        .scene-num {
            font-size: 44px;
            font-weight: 800;
            color: rgba(61, 139, 255, .6);
            line-height: 1;
            display: block;
            margin-bottom: 12px;
            letter-spacing: -.05em;
        }

        .scene-copy h3 {
            font-size: 22px;
            margin-bottom: 8px;
        }

        .scene-copy p {
            color: var(--text-body);
            font-size: 15px;
            max-width: 460px;
        }

        .evidence-section {
            background: rgba(15, 31, 56, .36);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .evidence-summary h2 {
            max-width: 420px;
        }

        .evidence-lead {
            font-size: 17px;
            color: var(--text-body);
            margin: 18px 0 24px;
        }

        .metric-row {
            display: flex;
            flex-wrap: wrap;
            gap: 26px;
            margin-bottom: 22px;
        }

        .metric-item .metric-value {
            color: var(--text-title);
            font-size: 30px;
            font-weight: 800;
            line-height: 1.2;
        }

        .metric-item .metric-label {
            color: var(--text-dim);
            font-size: 13px;
        }

        .quote-card {
            background: var(--glass);
            border: var(--border);
            border-radius: 20px;
            padding: 22px 24px;
            box-shadow: var(--shadow-panel);
            backdrop-filter: blur(10px);
            transition: var(--transition);
            margin-bottom: 20px;
        }

        .quote-card:hover {
            transform: translateY(-3px);
            border-color: var(--line-strong);
        }

        .quote-card .avatar {
            width: 40px;
            height: 40px;
            flex: 0 0 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(61, 139, 255, .22);
            border: 1px solid rgba(61, 139, 255, .32);
            color: #fff;
            font-weight: 700;
            border-radius: 14px;
            font-size: 16px;
            margin-right: 12px;
        }

        .quote-card .quote-name {
            color: var(--text-title);
            font-size: 14px;
            font-weight: 700;
            line-height: 1.2;
        }

        .quote-card .quote-tag {
            font-size: 12px;
            color: var(--text-dim);
        }

        .quote-card blockquote {
            margin: 16px 0 0;
            padding: 0;
            font-size: 16px;
            color: var(--text-body);
            border-left: 0 !important;
        }

        .evidence-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 30px;
        }

        .evidence-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--line);
            background: rgba(255, 255, 255, .03);
            border-radius: 999px;
            padding: 7px 14px;
            font-size: 13px;
            color: var(--text-body);
        }

        .evidence-badge i {
            color: var(--success);
        }

        .section-updates {
            background: rgba(15, 31, 56, .38);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            background-image: linear-gradient(180deg, rgba(10, 20, 40, .92) 0%, rgba(10, 20, 40, .82) 100%), url('/assets/images/backpic/back-3.png');
            background-size: cover;
        }

        .updates-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 34px;
        }

        .updates-head h2 {
            margin-bottom: 4px;
        }

        .updates-head p {
            margin: 0;
            color: var(--text-dim);
            font-size: 14px;
        }

        .news-feature-card {
            position: relative;
            border-radius: 26px;
            overflow: hidden;
            border: var(--border);
            background: rgba(7, 18, 36, .88);
            height: 100%;
            box-shadow: var(--shadow-panel);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-feature-card:hover {
            border-color: var(--line-strong);
            transform: translateY(-5px);
            box-shadow: 0 24px 70px rgba(0, 0, 0, .36);
        }

        .news-feature-cover {
            position: relative;
            height: 280px;
            overflow: hidden;
            flex: 0 0 auto;
        }

        .news-feature-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .news-feature-cover::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 18, 36, .04) 45%, rgba(7, 18, 36, .88) 100%);
        }

        .news-cat {
            display: inline-block;
            background: rgba(40, 192, 245, .14);
            color: var(--brand-light);
            border: 1px solid rgba(40, 192, 245, .28);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            margin-bottom: 14px;
        }

        .news-feature-body {
            padding: 24px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
            justify-content: flex-end;
        }

        .news-feature-body h3 {
            font-size: 22px;
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .news-feature-body p {
            color: var(--text-body);
            font-size: 15px;
        }

        .news-feature-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            color: var(--text-dim);
            font-size: 13px;
            margin-top: auto;
            padding-top: 12px;
        }

        .news-card {
            background: rgba(7, 18, 36, .78);
            border: var(--border);
            border-radius: 18px;
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            box-shadow: var(--shadow-panel);
        }

        .news-card:hover {
            transform: translateY(-4px);
            border-color: var(--line-strong);
            box-shadow: var(--shadow-hover);
        }

        .news-card-cover {
            position: relative;
            display: block;
            height: 180px;
            overflow: hidden;
            background: #0d1a2e;
        }

        .news-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform .4s ease;
        }

        .news-card:hover .news-card-cover img {
            transform: scale(1.05);
        }

        .news-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card-body h3 {
            font-size: 16px;
            line-height: 1.5;
            margin-bottom: 6px;
        }

        .news-card-body .summary {
            color: var(--text-dim);
            font-size: 13px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .news-meta {
            display: flex;
            justify-content: space-between;
            color: var(--text-dim);
            font-size: 12px;
            margin-top: auto;
            align-items: center;
        }

        .news-meta i {
            margin-right: 4px;
        }

        .news-link {
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-light);
        }

        .news-empty {
            border: 1px dashed var(--line-strong);
            background: rgba(155, 205, 255, .04);
            border-radius: 24px;
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            color: var(--text-dim);
            font-size: 16px;
            text-align: center;
            padding: 30px;
        }

        .news-empty i {
            font-size: 34px;
            color: var(--brand);
        }

        .faq-panel .faq-item {
            background: rgba(15, 31, 56, .55);
            border: var(--border);
            border-radius: 16px;
            padding: 18px 22px;
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .faq-panel .faq-item[open] {
            background: rgba(61, 139, 255, .08);
            border-color: rgba(61, 139, 255, .35);
        }

        .faq-q {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.5;
            margin: 0;
            user-select: none;
        }

        .faq-q::before {
            content: "\f059";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--brand-light);
            font-size: 18px;
        }

        .faq-q::-webkit-details-marker {
            display: none;
        }

        .faq-q::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            margin-left: auto;
            color: var(--text-dim);
            transition: var(--transition);
        }

        .faq-item[open] .faq-q::after {
            transform: rotate(180deg);
            color: var(--brand-light);
        }

        .faq-a {
            margin-top: 14px;
            padding: 12px 0 2px;
            border-top: 1px solid var(--line);
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-side {
            background: var(--glass);
            border: var(--border);
            border-radius: 22px;
            padding: 28px;
            box-shadow: var(--shadow-panel);
            backdrop-filter: blur(8px);
            height: 100%;
        }

        .faq-side .side-icon {
            width: 52px;
            height: 52px;
            border-radius: 18px;
            background: rgba(255, 199, 97, .14);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 18px;
        }

        .faq-side h3 {
            font-size: 20px;
        }

        .faq-side a {
            margin-top: 16px;
        }

        .cta-section {
            position: relative;
            overflow: hidden;
            padding: 90px 0;
        }

        .cta-box {
            border-radius: 32px;
            border: var(--border);
            background-image: linear-gradient(120deg, rgba(15, 31, 56, .95), rgba(61, 139, 255, .2));
            padding: 58px;
            box-shadow: var(--shadow-panel);
            position: relative;
        }

        .cta-box::after {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            right: -80px;
            bottom: -120px;
            background: rgba(40, 192, 245, .14);
            filter: blur(80px);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-box h2 {
            font-size: 34px;
            margin-bottom: 16px;
        }

        .cta-box p {
            max-width: 620px;
            color: var(--text-body);
            margin-bottom: 30px;
            font-size: 16px;
        }

        .site-footer {
            border-top: 1px solid var(--line);
            background: #060D1B;
            padding-top: 64px;
            padding-bottom: 30px;
        }

        .footer-brand {
            max-width: 360px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 18px;
        }

        .footer-brand p {
            color: var(--text-dim);
            font-size: 14px;
        }

        .footer-title {
            color: var(--text-title);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--text-dim);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--brand-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(155, 205, 255, .1);
            margin-top: 48px;
            padding-top: 28px;
            color: var(--text-dim);
            font-size: 13px;
            display: flex;
            justify-content: center;
            text-align: center;
        }

        .fixed-bottom-cta {
            position: fixed;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 1085;
            background: rgba(9, 17, 31, .92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--line-strong);
            padding: 13px 0;
            transform: translateY(110%);
            transition: transform .4s ease;
            box-shadow: 0 -12px 40px rgba(0, 0, 0, .26);
        }

        .fixed-bottom-cta.is-visible {
            transform: translateY(0);
        }

        .fixed-bottom-cta .fb-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }

        .fb-text {
            color: var(--text-body);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0;
        }

        .fb-text i {
            color: var(--accent);
            font-size: 18px;
        }

        .fb-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .fb-close {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--line);
            background: transparent;
            color: var(--text-dim);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .fb-close:hover {
            color: #fff;
            background: rgba(255, 107, 107, .14);
            border-color: rgba(255, 107, 107, .5);
        }

        @media (max-width: 1199.98px) {
            .feature-primary p {
                max-width: 100%;
            }

            .preview-card {
                max-width: 500px;
            }
        }

        @media (max-width: 991.98px) {
            .section {
                padding-top: 70px;
                padding-bottom: 70px;
            }

            .hero-section {
                padding-top: 90px;
                padding-bottom: 84px;
            }

            .hero-copy {
                max-width: 100%;
            }

            .hero-visual {
                margin-left: 0;
                margin-top: 42px;
                max-width: 560px;
            }

            .feature-primary {
                min-height: 360px;
            }

            .feature-half {
                margin-bottom: 20px;
            }

            .scene-media img {
                height: 240px;
            }

            .footer-brand {
                margin-bottom: 32px;
            }

            .fixed-bottom-cta {
                padding: 10px 0;
            }
        }

        @media (max-width: 767.98px) {
            h1 {
                font-size: 34px;
            }

            h2 {
                font-size: 26px;
            }

            .section {
                padding-top: 58px;
                padding-bottom: 58px;
            }

            .header-top {
                flex-wrap: wrap;
                padding-top: 14px;
            }

            .header-tabs-row {
                padding-bottom: 10px;
            }

            .header-actions .btn-header {
                padding: 8px 14px;
                font-size: 13px;
            }

            .hero-section {
                padding-top: 70px;
            }

            .hero-title {
                font-size: 34px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .trust-row {
                gap: 12px;
                font-size: 12px;
            }

            .preview-card {
                transform: none;
            }

            .feature-primary {
                padding: 26px;
                min-height: 0;
            }

            .feature-card {
                padding: 24px;
            }

            .cta-box {
                padding: 32px 22px;
            }

            .cta-box h2 {
                font-size: 26px;
            }

            .fb-text {
                display: none;
            }

            .fixed-bottom-cta {
                padding: 10px 0;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .section {
                padding-top: 48px;
                padding-bottom: 48px;
            }

            .brand-logo .logo-main {
                font-size: 18px;
            }

            .header-cta-text {
                display: none;
            }

            .brand-logo .logo-em {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .nav-tab {
                padding: 7px 13px;
                font-size: 13px;
            }

            .seg-tabs {
                gap: 4px;
                padding-bottom: 2px;
                margin-right: -10px;
            }

            .hero-section {
                padding-top: 54px;
                padding-bottom: 48px;
            }

            .hero-title {
                font-size: 29px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .preview-cover {
                height: 160px;
            }

            .news-feature-cover {
                height: 210px;
            }

            .news-feature-body {
                padding: 20px;
            }

            .quote-card {
                padding: 18px;
            }
        }

/* roulang page: article */
:root {
    --bg-deep: #0A1428;
    --bg-muted: #0F1F38;
    --bg-glass: rgba(22, 44, 76, 0.72);
    --bg-glass-strong: rgba(13, 27, 49, 0.94);
    --border-soft: rgba(155, 205, 255, 0.16);
    --border-lite: rgba(205, 230, 255, 0.22);
    --text-head: #F2F7FF;
    --text-body: #C0D2E8;
    --text-muted: #829AB8;
    --brand-blue: #3D8BFF;
    --brand-cyan: #28C0F5;
    --brand-gold: #FFC761;
    --success-green: #2ED3A6;
    --error-red: #FF6B6B;
    --radius-card: 20px;
    --radius-box: 14px;
    --radius-chip: 999px;
    --shadow-panel: 0 8px 30px rgba(0, 0, 0, 0.22);
    --shadow-glow: 0 0 0 1px rgba(61, 139, 255, 0.18), 0 10px 28px rgba(61, 139, 255, 0.28);
    --gap-section: 96px;
    --gap-section-mobile: 64px;
    --container-width: 1280px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.78;
    color: var(--text-body);
    background-color: var(--bg-deep);
    background-image:
        radial-gradient(circle at 12% 8%, rgba(61, 139, 255, 0.20), transparent 32%),
        radial-gradient(circle at 88% 22%, rgba(40, 192, 245, 0.10), transparent 26%),
        radial-gradient(circle at 78% 84%, rgba(18, 55, 82, 0.28), transparent 40%);
    background-repeat: no-repeat;
    min-height: 100vh;
    padding-bottom: 76px;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color .22s ease, border-color .22s ease, box-shadow .22s ease, background-color .22s ease;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
    outline: 3px solid rgba(40, 192, 245, 0.56);
    outline-offset: 3px;
    border-radius: 6px;
}

img,
svg {
    display: block;
    max-width: 100%;
}

button {
    border: 0;
    background: none;
    font: inherit;
    cursor: pointer;
}

ul,
ol {
    list-style-position: inside;
    padding-left: 0;
}

.container {
    max-width: var(--container-width);
    padding-left: 24px;
    padding-right: 24px;
}

::selection {
    background: rgba(61, 139, 255, 0.3);
    color: #fff;
}

/* 隐藏滚动中的横向标签导航滚动条 */
.header-tabs-row::-webkit-scrollbar,
.seg-tabs::-webkit-scrollbar {
    height: 0;
    width: 0;
}

/* 顶部导航 */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1040;
    width: 100%;
    border-bottom: 1px solid rgba(155, 205, 255, 0.10);
    background: rgba(10, 20, 40, 0.72);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.site-header.scrolled {
    background: rgba(8, 17, 35, 0.90);
    border-bottom-color: rgba(155, 205, 255, 0.14);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.site-header .container {
    padding-top: 14px;
    padding-bottom: 12px;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo-em {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 13px;
    font-size: 20px;
    color: #F2F7FF;
    background: linear-gradient(145deg, rgba(40, 192, 245, 0.92), rgba(61, 139, 255, 0.9));
    box-shadow: 0 8px 24px rgba(40, 192, 245, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.logo-main,
.logo-sub {
    display: block;
}

.logo-main {
    color: var(--text-head);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.02em;
    line-height: 1.2;
}

.logo-sub {
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.6;
    margin-top: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.header-tabs-row {
    margin-top: 12px;
    overflow-x: auto;
    scrollbar-width: none;
}

.seg-tabs {
    display: flex;
    gap: 6px;
    align-items: center;
    padding-bottom: 4px;
    min-width: max-content;
}

.nav-tab {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    color: #9AB4D6;
    border: 1px solid transparent;
    white-space: nowrap;
    background: transparent;
    transition: background .22s ease, color .22s ease, border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}

.nav-tab i {
    width: 15px;
    text-align: center;
    color: #6C87A8;
    transition: color .2s ease;
}

.nav-tab:hover {
    color: #E4F0FF;
    background: rgba(155, 205, 255, 0.08);
    border-color: rgba(155, 205, 255, 0.18);
    transform: translateY(-1px);
}

.nav-tab:hover i {
    color: var(--brand-cyan);
}

.nav-tab.active {
    color: #F6FBFF;
    background: linear-gradient(180deg, rgba(61, 139, 255, 0.22), rgba(40, 192, 245, 0.08));
    border-color: rgba(61, 139, 255, 0.54);
    box-shadow: 0 0 0 4px rgba(61, 139, 255, 0.10), 0 0 20px rgba(40, 192, 245, 0.08);
}

.nav-tab.active i {
    color: var(--brand-cyan);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    border-radius: 999px;
    font-weight: 700;
    line-height: 1;
    white-space: nowrap;
    padding: 11px 22px;
    border: 1px solid transparent;
    transition: transform .2s ease, box-shadow .25s ease, border-color .2s ease, background-color .2s ease, color .2s ease;
}

.btn i {
    font-size: 14px;
}

.btn:hover,
.btn:focus {
    transform: translateY(-2px);
}

.btn-primary-glow {
    color: #fff;
    background: linear-gradient(135deg, rgba(40, 192, 245, 0.95), rgba(61, 139, 255, 0.98));
    border-color: rgba(255, 255, 255, 0.16);
    box-shadow: 0 10px 28px rgba(61, 139, 255, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.btn-primary-glow:hover {
    color: #fff;
    box-shadow: 0 14px 32px rgba(61, 139, 255, 0.48), 0 0 0 1px rgba(155, 205, 255, 0.20);
}

.btn-ghost {
    color: #D3E4FA;
    border-color: rgba(155, 205, 255, 0.28);
    background: rgba(155, 205, 255, 0.06);
}

.btn-ghost:hover {
    color: #F2F7FF;
    background: rgba(155, 205, 255, 0.13);
    border-color: rgba(155, 205, 255, 0.45);
}

.btn-header {
    padding: 9px 18px;
    font-size: 14px;
}

/* 文章页顶部区域 */
.article-banner {
    position: relative;
    padding: 44px 0 46px;
    background: linear-gradient(120deg, rgba(10, 20, 40, 0.92) 0%, rgba(20, 35, 62, 0.80) 48%, rgba(15, 31, 56, 0.85) 100%);
    border-bottom: 1px solid rgba(155, 205, 255, 0.12);
    overflow: hidden;
}

.article-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    opacity: .28;
    transform: scale(1.02);
}

.article-banner::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 20, 40, 0.36), rgba(10, 20, 40, 0.95));
}

.article-banner .container {
    position: relative;
    z-index: 2;
}

.breadcrumb-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 22px;
}

.breadcrumb-nav a {
    color: #9CB9DA;
}

.breadcrumb-nav a:hover {
    color: var(--brand-cyan);
}

.breadcrumb-nav .sep {
    color: #5F759B;
    font-size: 12px;
}

.breadcrumb-divider {
    width: 100%;
    height: 1px;
    background: rgba(155, 205, 255, 0.18);
    margin-bottom: 34px;
}

.article-page-title {
    max-width: 900px;
}

.article-page-title h1 {
    color: var(--text-head);
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
}

.article-excerpt {
    max-width: 820px;
    color: #B8CCE5;
    font-size: 16px;
    line-height: 1.8;
    margin-top: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 主体布局 */
.article-main {
    padding: 52px 0 34px;
}

.article-layout .col-main {
    min-width: 0;
}

.article-detail-card {
    position: relative;
    border-radius: var(--radius-card);
    background: linear-gradient(145deg, rgba(17, 33, 60, 0.94), rgba(11, 23, 45, 0.96));
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-panel);
    overflow: hidden;
    padding: clamp(22px, 3.6vw, 40px);
}

.article-detail-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 30px;
    right: auto;
    width: 220px;
    height: 2px;
    background: linear-gradient(90deg, var(--brand-cyan), rgba(40, 192, 245, 0), rgba(40, 192, 245, 0));
    border-radius: 99px;
}

.article-meta-line {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    row-gap: 8px;
    align-items: center;
    color: var(--text-muted);
    font-size: 14px;
    border-bottom: 1px solid rgba(155, 205, 255, 0.12);
    padding-bottom: 18px;
    margin-bottom: 22px;
}

.article-meta-line span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.article-meta-line i {
    color: var(--brand-cyan);
    width: 15px;
}

.article-category-pill {
    color: var(--text-head);
    background: rgba(61, 139, 255, 0.14);
    border: 1px solid rgba(61, 139, 255, 0.42);
    border-radius: 99px;
    padding: 3px 12px;
    font-weight: 600;
    font-size: 13px;
}

.article-cover-wrap {
    margin-bottom: 24px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(155, 205, 255, 0.15);
    line-height: 0;
}

.article-cover-wrap img {
    width: 100%;
    height: min(46vw, 440px);
    object-fit: cover;
}

.post-body {
    word-break: break-word;
    overflow-wrap: break-word;
    color: var(--text-body);
    font-size: 16px;
    line-height: 1.85;
}

.post-body p {
    margin: 0 0 1.4em;
}

.post-body h2,
.post-body h3,
.post-body h4 {
    color: var(--text-head);
    margin-top: 2em;
    margin-bottom: 0.8em;
    line-height: 1.45;
}

.post-body h2 {
    font-size: 26px;
    font-weight: 700;
    padding-left: 15px;
    border-left: 4px solid var(--brand-cyan);
    border-radius: 2px;
}

.post-body h3 {
    font-size: 21px;
    font-weight: 650;
}

.post-body img {
    max-width: 100%;
    height: auto;
    border-radius: 14px;
    margin: 1.8em 0;
    border: 1px solid rgba(155, 205, 255, 0.14);
}

.post-body img.loading,
.post-body img.error {
    background: rgba(155, 205, 255, 0.08);
    min-height: 120px;
    border-style: dashed;
}

.post-body blockquote {
    margin: 1.6em 0;
    padding: 16px 22px;
    color: #D9E8FC;
    background: rgba(61, 139, 255, 0.08);
    border: 1px solid rgba(61, 139, 255, 0.16);
    border-radius: 14px;
}

.post-body ul,
.post-body ol {
    margin-bottom: 1.5em;
    padding-left: 1.2em;
}

.post-body li {
    margin-bottom: .55em;
}

.post-body a {
    color: var(--brand-cyan);
    text-decoration: underline;
    text-decoration-color: rgba(40, 192, 245, 0.35);
    text-underline-offset: 4px;
}

.post-body table {
    width: 100%;
    margin: 1.5em 0;
    border-collapse: collapse;
    font-size: 14px;
    border: 1px solid rgba(155, 205, 255, 0.17);
    border-radius: 12px;
    overflow: hidden;
}

.post-body table th,
.post-body table td {
    border-bottom: 1px solid rgba(155, 205, 255, 0.12);
    padding: 12px 14px;
    text-align: left;
}

.post-body table th {
    background: rgba(61, 139, 255, 0.10);
    color: var(--text-head);
    font-size: 15px;
}

.post-body table tr:last-child td {
    border-bottom: 0;
}

.post-body hr {
    border: 0;
    border-top: 1px solid rgba(155, 205, 255, 0.12);
    margin: 2.2em 0;
}

.post-body .note,
.post-body .tip {
    background: rgba(255, 199, 97, 0.08);
    border: 1px solid rgba(255, 199, 97, 0.28);
    border-radius: 12px;
    padding: 14px 18px;
    margin: 1.4em 0;
    color: #DDEBFA;
}

.post-body code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    background: rgba(155, 205, 255, 0.09);
    border: 1px solid rgba(155, 205, 255, 0.10);
    border-radius: 8px;
    padding: 2px 7px;
    font-size: 14px;
    color: #C9E5FF;
}

.post-body pre {
    background: rgba(3, 10, 24, 0.78);
    padding: 18px;
    border-radius: 12px;
    border: 1px solid rgba(155, 205, 255, 0.12);
    overflow-x: auto;
}

.post-body pre code {
    background: transparent;
    border: 0;
    padding: 0;
    font-size: 14px;
}

/* 底部阅读信息 */
.article-footer-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    border-top: 1px solid rgba(155, 205, 255, 0.12);
    margin-top: 34px;
    padding-top: 22px;
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.tag-row .tag-label {
    color: var(--text-muted);
    font-size: 14px;
    margin-right: 4px;
}

.tag-pill {
    display: inline-flex;
    color: #BBD6FA;
    background: rgba(155, 205, 255, 0.06);
    border: 1px solid rgba(155, 205, 255, 0.18);
    border-radius: 99px;
    padding: 4px 13px;
    font-size: 13px;
    font-weight: 500;
    transition: all .2s ease;
}

.tag-pill:hover {
    border-color: rgba(61, 139, 255, 0.58);
    color: #E8F2FF;
}

.btn-back-home {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #B6CEF0;
    font-size: 14px;
    font-weight: 600;
    padding: 7px 12px;
    border-radius: 10px;
    transition: all .2s ease;
}

.btn-back-home:hover {
    color: var(--brand-cyan);
    background: rgba(40, 192, 245, 0.08);
}

.notfound-card {
    border-radius: var(--radius-card);
    background: rgba(18, 33, 61, 0.92);
    border: 1px solid rgba(155, 205, 255, 0.16);
    padding: 40px 20px 48px;
    text-align: center;
    box-shadow: var(--shadow-panel);
}

.notfound-card i {
    color: var(--brand-cyan);
    font-size: 40px;
    margin-bottom: 18px;
}

.notfound-card h2 {
    color: var(--text-head);
    font-size: 24px;
    margin-bottom: 12px;
}

.notfound-card p {
    color: var(--text-muted);
    max-width: 420px;
    margin: 0 auto 22px;
}

/* 侧栏 */
.article-aside {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.aside-card {
    background: rgba(15, 31, 56, 0.72);
    border: 1px solid rgba(155, 205, 255, 0.15);
    border-radius: var(--radius-card);
    padding: 22px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.aside-card .aside-title {
    color: var(--text-head);
    font-size: 17px;
    font-weight: 700;
    padding-left: 12px;
    border-left: 3px solid var(--brand-cyan);
    margin-bottom: 16px;
}

.related-nums {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    border-top: 1px solid rgba(155, 205, 255, 0.11);
    padding-top: 16px;
    margin-top: 8px;
}

.related-nums span {
    display: inline-flex;
    flex-direction: column;
    color: var(--text-muted);
    font-size: 12px;
}

.related-nums strong {
    color: var(--text-head);
    font-size: 20px;
    line-height: 1.2;
}

.aside-links {
    display: grid;
    gap: 8px;
}

.aside-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #AEC5E6;
    padding: 8px 10px;
    border-radius: 11px;
    font-size: 15px;
    border: 1px solid transparent;
    transition: all .2s ease;
}

.aside-links a i {
    flex-shrink: 0;
    width: 20px;
    text-align: center;
    color: #6B8BB7;
}

.aside-links a:hover {
    color: var(--text-head);
    background: rgba(155, 205, 255, 0.08);
    border-color: rgba(155, 205, 255, 0.16);
    padding-left: 14px;
}

.aside-info-list {
    list-style: none;
    padding: 0;
    display: grid;
    gap: 13px;
}

.aside-info-list li {
    display: flex;
    gap: 11px;
    color: #A8BFDD;
    font-size: 14px;
    line-height: 1.65;
    align-items: flex-start;
}

.aside-info-list i {
    width: 17px;
    color: var(--brand-gold);
    margin-top: 6px;
}

/* 延伸阅读 */
.extend-wrap {
    margin-top: 34px;
}

.extend-title {
    color: var(--text-head);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.extend-title i {
    color: var(--brand-cyan);
}

.extend-grid {
    display: grid;
    gap: 24px;
}

.extend-card {
    display: flex;
    gap: 16px;
    background: rgba(15, 31, 56, 0.72);
    border: 1px solid rgba(155, 205, 255, 0.14);
    border-radius: 16px;
    padding: 12px;
    transition: transform .25s ease, border-color .25s ease, background .25s ease;
}

.extend-card:hover {
    transform: translateY(-3px);
    border-color: rgba(61, 139, 255, 0.46);
    background: rgba(18, 41, 72, 0.8);
}

.extend-card .extend-thumb {
    width: 128px;
    min-width: 128px;
    height: 92px;
    border-radius: 12px;
    background: linear-gradient(135deg, #12325A, #0D2544);
    border: 1px solid rgba(155, 205, 255, 0.18);
    overflow: hidden;
}

.extend-card .extend-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.extend-card .extend-body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.extend-card .extend-body strong {
    color: var(--text-head);
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.extend-card .extend-body small {
    color: var(--text-muted);
    font-size: 13px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 返回顶部 / 固定转换条 */
.sticky-convert {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1050;
    padding: 10px 0 10px;
    background: rgba(10, 21, 41, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(155, 205, 255, 0.18);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.22);
    opacity: 0;
    visibility: hidden;
    transform: translateY(100%);
    transition: opacity .3s ease, transform .3s ease, visibility .3s ease;
}

.sticky-convert.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sticky-convert .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.convert-text {
    color: #CCDEF5;
    font-size: 15px;
    line-height: 1.5;
    flex: 1;
    min-width: 0;
}

.convert-text i {
    color: var(--brand-gold);
    margin-right: 7px;
}

.convert-text span {
    color: var(--text-head);
    font-weight: 700;
}

.convert-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    color: var(--text-muted);
    border: 1px solid rgba(155, 205, 255, 0.18);
    transition: all .2s ease;
}

.convert-close:hover {
    color: var(--error-red);
    border-color: var(--error-red);
}

/* 页脚 */
.site-footer {
    background: #060D1D;
    border-top: 1px solid rgba(155, 205, 255, 0.10);
    margin-top: 54px;
    padding-top: 52px;
}

.site-footer .footer-brand {
    margin-bottom: 10px;
}

.site-footer .footer-brand p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    max-width: 340px;
    margin-top: 12px;
}

.footer-title {
    color: var(--text-head);
    font-weight: 700;
    font-size: 16px;
    margin: 8px 0 14px;
}

.footer-links {
    list-style: none;
    display: grid;
    gap: 7px;
    padding: 0;
}

.footer-links li {
    color: var(--text-muted);
    font-size: 14px;
}

.footer-links a {
    display: inline-flex;
    color: #9DB6DB;
    font-size: 14px;
    transition: all .2s ease;
}

.footer-links a:hover {
    color: var(--brand-cyan);
    padding-left: 5px;
}

.footer-bottom {
    margin-top: 38px;
    padding: 18px 0 20px;
    border-top: 1px solid rgba(155, 205, 255, 0.09);
    color: #5F769A;
    font-size: 13px;
    line-height: 1.7;
}

/* Bootstrap 辅助定制 */
.row {
    --bs-gutter-y: 1.5rem;
}

@media (min-width: 992px) {
    .article-layout .col-main {
        flex: 0 0 calc(100% - 320px);
        max-width: calc(100% - 320px);
    }
    .article-layout .col-aside {
        flex: 0 0 320px;
        max-width: 320px;
    }
}

@media (max-width: 1199.98px) {
    .container {
        padding-left: 22px;
        padding-right: 22px;
    }
}

@media (max-width: 991.98px) {
    .site-footer {
        padding-top: 40px;
    }
    .site-footer .row {
        --bs-gutter-y: 1.2rem;
    }
    .article-aside {
        margin-top: 10px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: stretch;
    }
    .article-aside .aside-card {
        height: auto;
    }
}

@media (max-width: 767.98px) {
    body {
        padding-bottom: 104px;
        font-size: 15px;
    }
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    .site-header .container {
        padding-top: 10px;
        padding-bottom: 8px;
    }
    .header-cta-text {
        display: none;
    }
    .btn-header {
        padding: 10px 16px;
        font-size: 14px;
    }
    .header-tabs-row {
        margin-top: 9px;
        margin-left: -16px;
        width: calc(100% + 32px);
        padding-left: 16px;
    }
    .nav-tab {
        gap: 6px;
        padding: 8px 13px;
        font-size: 14px;
    }
    .article-banner {
        padding: 30px 0 36px;
    }
    .breadcrumb-nav {
        font-size: 13px;
        margin-bottom: 16px;
    }
    .article-page-title h1 {
        font-size: clamp(23px, 7vw, 31px);
    }
    .article-main {
        padding-top: 36px;
    }
    .article-detail-card {
        padding: 18px 14px 22px;
        border-radius: 16px;
    }
    .article-meta-line {
        gap: 10px;
    }
    .article-cover-wrap img {
        height: 40vw;
        min-height: 180px;
        max-height: 280px;
    }
    .post-body {
        font-size: 15px;
    }
    .post-body h2 {
        font-size: 21px;
        padding-left: 11px;
    }
    .article-aside {
        grid-template-columns: 1fr;
    }
    .footer-mobile-gap {
        height: 4px;
    }
    .sticky-convert .convert-text {
        font-size: 13px;
    }
}

@media (max-width: 575.98px) {
    .logo-main {
        font-size: 18px;
    }
    .logo-sub {
        font-size: 11px;
    }
    .header-top {
        gap: 10px;
    }
    .article-footer-meta {
        flex-direction: column;
        align-items: flex-start;
    }
    .extend-card {
        gap: 12px;
    }
    .extend-card .extend-thumb {
        width: 106px;
        min-width: 106px;
        height: 82px;
        border-radius: 10px;
    }
    .extend-body strong {
        font-size: 14px;
    }
    .extend-body small {
        font-size: 12px;
    }
    .btn-primary-glow {
        padding: 9px 17px;
        font-size: 14px;
    }
}

/* roulang page: category1 */
:root {
            --dark-1: #0A1428;
            --dark-2: #0F1F38;
            --glass: rgba(22, 44, 76, 0.72);
            --glass-light: rgba(22, 44, 76, 0.55);
            --line: rgba(155, 205, 255, 0.16);
            --ink: #F2F7FF;
            --ink-2: #C0D2E8;
            --muted: #829AB8;
            --brand: #3D8BFF;
            --bright: #28C0F5;
            --accent: #FFC761;
            --success: #2ED3A6;
            --danger: #FF6B6B;
            --radius-lg: 20px;
            --radius: 14px;
            --radius-sm: 12px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
            --shadow-soft: 0 12px 32px rgba(10, 20, 40, 0.45);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--dark-1);
            color: var(--ink);
            line-height: 1.75;
            font-size: 16px;
            padding-bottom: 72px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -2;
            background:
                radial-gradient(700px 420px at 10% -6%, rgba(61, 139, 255, 0.18), transparent 62%),
                radial-gradient(720px 460px at 90% 30%, rgba(40, 192, 245, 0.12), transparent 60%),
                linear-gradient(180deg, #0A1428 0%, #0D1930 50%, #0A1428 100%);
        }

        body::after {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -1;
            pointer-events: none;
            opacity: 0.25;
            background-image: url("/assets/images/backpic/back-1.webp");
            background-size: 1100px 700px;
            background-position: center 10%;
            background-repeat: no-repeat;
            filter: blur(1px);
        }

        img {
            max-width: 100%;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        button,
        input,
        textarea,
        select {
            font: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin-top: 0;
            line-height: 1.35;
            letter-spacing: 0;
        }

        h1 {
            font-size: 44px;
            font-weight: 700;
            color: var(--ink);
        }

        h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--ink);
        }

        h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--ink);
        }

        p {
            margin: 0 0 16px;
        }

        .container {
            max-width: 1280px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            position: relative;
            padding: 76px 0;
        }

        .section-soft {
            background: rgba(15, 31, 56, 0.52);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .section-tighter {
            padding: 56px 0;
        }

        .divider-glow {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(61, 139, 255, 0.5), transparent);
            border: 0;
            margin: 0;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: linear-gradient(180deg, rgba(10, 20, 40, 0.96), rgba(10, 20, 40, 0.9));
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.28);
            transition: box-shadow 0.3s ease;
        }

        .site-header.is-scrolled {
            box-shadow: 0 14px 34px rgba(0, 0, 0, 0.34);
            border-bottom-color: rgba(155, 205, 255, 0.2);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 0 8px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-em {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            color: #fff;
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.9), rgba(40, 192, 245, 0.85));
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 14px;
            font-size: 20px;
            box-shadow: 0 0 0 4px rgba(61, 139, 255, 0.12), 0 6px 18px rgba(0, 0, 0, 0.2);
        }

        .logo-main {
            display: block;
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.3;
            letter-spacing: -0.3px;
        }

        .logo-sub {
            display: block;
            font-size: 12px;
            color: var(--muted);
            line-height: 1.3;
            margin-top: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 0;
            transition: all 0.25s ease;
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, #3D8BFF 0%, #28C0F5 100%);
            color: #fff;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.06) inset, 0 8px 22px rgba(40, 192, 245, 0.3), 0 4px 10px rgba(0, 0, 0, 0.16);
        }

        .btn-primary-glow:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 26px rgba(40, 192, 245, 0.45), 0 12px 24px rgba(0, 0, 0, 0.28);
        }

        .btn-primary-glow:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(40, 192, 245, 0.22), 0 0 0 1px rgba(255, 255, 255, 0.4);
        }

        .btn-header {
            min-height: 42px;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 600;
        }

        .header-tabs-row {
            padding-bottom: 2px;
        }

        .seg-tabs {
            display: flex;
            flex-wrap: nowrap;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 2px 2px 14px;
            -webkit-overflow-scrolling: touch;
            background: linear-gradient(180deg, rgba(255,255,255,0.02) 0%, transparent 100%);
        }

        .seg-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 17px;
            white-space: nowrap;
            border-radius: 999px;
            color: var(--ink-2);
            font-size: 15px;
            font-weight: 500;
            border: 1px solid transparent;
            background: transparent;
            transition: all 0.24s ease;
            flex-shrink: 0;
        }

        .nav-tab:hover {
            color: #fff;
            background: rgba(155, 205, 255, 0.1);
        }

        .nav-tab:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(61, 139, 255, 0.25);
            border-radius: 999px;
        }

        .nav-tab.active {
            color: #fff;
            background: rgba(61, 139, 255, 0.2);
            border-color: rgba(61, 139, 255, 0.5);
            box-shadow: 0 0 14px rgba(61, 139, 255, 0.16), 0 4px 16px rgba(0, 0, 0, 0.12);
        }

        .nav-tab.active::after {
            content: "";
            position: absolute;
            left: 22px;
            right: 22px;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, transparent, #28C0F5, transparent);
            opacity: 0.75;
        }

        .category-main {
            position: relative;
            padding-top: 152px;
            z-index: 1;
        }

        .page-hero {
            position: relative;
            padding: 62px 0 50px;
            border-radius: 0 0 28px 28px;
            overflow: hidden;
            border-bottom: 1px solid var(--line);
            background:
                linear-gradient(90deg, rgba(10, 20, 40, 0.36), rgba(15, 31, 56, 0.72)),
                url("/assets/images/backpic/back-2.png") center/cover no-repeat;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background: linear-gradient(120deg, rgba(10, 20, 40, 0.2), transparent 55%, rgba(61, 139, 255, 0.06));
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--bright);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.6px;
            margin-bottom: 14px;
            background: rgba(10, 20, 40, 0.55);
            border: 1px solid var(--line);
            padding: 5px 12px;
            border-radius: 999px;
        }

        .hero-eyebrow i {
            color: var(--accent);
        }

        .hero-title {
            font-size: 40px;
            line-height: 1.25;
            margin-bottom: 18px;
            max-width: 760px;
        }

        .hero-lead {
            color: var(--ink-2);
            font-size: 17px;
            line-height: 1.85;
            max-width: 760px;
            margin-bottom: 24px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 22px;
        }

        .btn-soft-light {
            background: rgba(155, 205, 255, 0.08);
            color: #fff;
            padding: 9px 20px;
            border: 1px solid var(--line);
        }

        .btn-soft-light:hover {
            background: rgba(155, 205, 255, 0.16);
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-flags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .hero-flags li {
            color: var(--ink-2);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .hero-flags i {
            color: var(--success);
        }

        .section-head {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 40px;
        }

        .kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--bright);
            font-size: 14px;
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .kicker i {
            color: var(--brand);
        }

        .section-desc {
            color: var(--ink-2);
            font-size: 16px;
            max-width: 760px;
            margin: 0;
        }

        .timeline-section {
            padding-top: 82px;
        }

        .timeline-list {
            margin: 0;
            padding: 0 0 0 54px;
            list-style: none;
            position: relative;
        }

        .timeline-list::before {
            content: "";
            position: absolute;
            left: 20px;
            top: 10px;
            bottom: 10px;
            width: 2px;
            background: linear-gradient(180deg, rgba(61, 139, 255, 0.4), rgba(61, 139, 255, 0.12), rgba(61, 139, 255, 0.4));
            transform: translateX(-50%);
        }

        .tl-item {
            position: relative;
            margin-bottom: 28px;
        }

        .tl-item:last-child {
            margin-bottom: 0;
        }

        .tl-item::before {
            content: "";
            position: absolute;
            left: -39px;
            top: 20px;
            width: 13px;
            height: 13px;
            border-radius: 50%;
            background: var(--brand);
            box-shadow: 0 0 0 5px rgba(61, 139, 255, 0.16), 0 0 18px rgba(40, 192, 245, 0.4);
            border: 2px solid rgba(255, 255, 255, 0.85);
        }

        .tl-card {
            background: var(--glass);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 22px 26px;
            box-shadow: var(--shadow);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .tl-card:hover {
            transform: translateY(-3px);
            border-color: rgba(61, 139, 255, 0.34);
            box-shadow: 0 16px 38px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(61, 139, 255, 0.08);
        }

        .tl-phase {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--bright);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            padding: 4px 10px;
            background: rgba(40, 192, 245, 0.1);
            border-radius: 999px;
        }

        .tl-title {
            margin: 9px 0 10px;
            font-size: 20px;
            color: #fff;
            font-weight: 600;
        }

        .tl-desc {
            color: var(--ink-2);
            margin-bottom: 0;
            font-size: 15px;
            line-height: 1.85;
        }

        .tl-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-size: 14px;
            font-weight: 600;
            color: var(--bright);
            transition: gap 0.25s ease, color 0.25s ease;
        }

        .tl-link:hover {
            color: #fff;
            gap: 10px;
        }

        .highlight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .shade-card {
            background: rgba(10, 20, 40, 0.68);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 26px;
            box-shadow: var(--shadow);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .shade-card h3 {
            color: #fff;
            font-size: 20px;
            margin-bottom: 14px;
        }

        .feature-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .feature-list li {
            position: relative;
            padding-left: 26px;
            color: var(--ink-2);
            line-height: 1.8;
            margin-bottom: 12px;
            font-size: 15px;
        }

        .feature-list li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--success);
            font-size: 14px;
        }

        .explain-context {
            border-left: 3px solid var(--brand);
            padding-left: 16px;
            color: var(--ink-2);
            margin-top: 12px;
        }

        .explain-context strong {
            color: #fff;
        }

        .read-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--bright);
            font-weight: 600;
            font-size: 14px;
            margin-top: 14px;
        }

        .read-more-link:hover {
            color: #fff;
            gap: 9px;
        }

        .notice-panel {
            background:
                linear-gradient(135deg, rgba(15, 31, 56, 0.88), rgba(22, 44, 76, 0.66)),
                url("/assets/images/coverpic/cover-3.png") right bottom no-repeat;
            background-size: 340px auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            padding: 30px 28px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .notice-panel::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(61, 139, 255, 0.18), transparent 68%);
            pointer-events: none;
        }

        .notice-panel .tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-right: 8px;
            margin-bottom: 8px;
            border: 1px solid var(--line);
            background: rgba(10, 20, 40, 0.5);
            color: var(--ink-2);
        }

        .notice-panel .tag-primary {
            color: var(--bright);
            border-color: rgba(40, 192, 245, 0.25);
        }

        .notice-panel h3 {
            font-size: 24px;
            margin: 12px 0 12px;
        }

        .notice-panel p {
            color: var(--ink-2);
            max-width: 560px;
        }

        .notice-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--muted);
            font-size: 14px;
            margin-top: 14px;
        }

        .notice-meta i {
            color: var(--bright);
            margin-right: 5px;
        }

        .flow-strip {
            position: relative;
            overflow: hidden;
            padding: 34px 0 12px;
        }

        .flow-strip .container {
            position: relative;
            z-index: 2;
        }

        .flow-item {
            display: flex;
            gap: 18px;
            margin-bottom: 18px;
            align-items: flex-start;
        }

        .flow-number {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            border-radius: 15px;
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.25), rgba(40, 192, 245, 0.12));
            border: 1px solid rgba(40, 192, 245, 0.3);
            color: var(--bright);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 0 18px rgba(61, 139, 255, 0.1);
        }

        .flow-body h3 {
            font-size: 18px;
            color: #fff;
            margin: 4px 0 8px;
        }

        .flow-body p {
            color: var(--ink-2);
            margin-bottom: 4px;
            font-size: 15px;
        }

        .faq-wrap {
            max-width: 1000px;
        }

        .faq-item {
            margin-bottom: 14px;
            background: rgba(10, 20, 40, 0.62);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.14);
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(61, 139, 255, 0.32);
        }

        .faq-item[open] {
            background: rgba(15, 31, 56, 0.85);
            border-color: rgba(61, 139, 255, 0.32);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 17px 20px;
            cursor: pointer;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:focus-visible {
            outline: none;
            box-shadow: inset 0 0 0 3px rgba(61, 139, 255, 0.2);
        }

        .faq-q-icon {
            color: var(--brand);
            margin-right: 8px;
        }

        .faq-sign {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 1px solid var(--line);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--muted);
            background: rgba(255, 255, 255, 0.02);
            transition: transform 0.25s ease, color 0.25s ease;
            flex-shrink: 0;
        }

        .faq-item[open] .faq-sign {
            transform: rotate(180deg);
            color: var(--bright);
            border-color: rgba(40, 192, 245, 0.45);
        }

        .faq-body {
            padding: 0 20px 20px 56px;
            color: var(--ink-2);
            line-height: 1.85;
            font-size: 15px;
        }

        .faq-body p {
            margin-bottom: 10px;
        }

        .cta-zone {
            position: relative;
            overflow: hidden;
            padding: 60px 0 72px;
            background:
                radial-gradient(520px 240px at 20% 20%, rgba(61, 139, 255, 0.2), transparent 60%),
                radial-gradient(420px 220px at 80% 0%, rgba(40, 192, 245, 0.16), transparent 55%),
                rgba(15, 31, 56, 0.55);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .cta-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 30px;
        }

        .cta-inner .cta-title {
            font-size: 26px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .cta-inner .cta-note {
            color: var(--ink-2);
            margin: 0;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .btn-line-more {
            background: rgba(155, 205, 255, 0.08);
            color: #fff;
            border: 1px solid rgba(155, 205, 255, 0.22);
            padding: 11px 22px;
            font-weight: 600;
            border-radius: 12px;
        }

        .btn-line-more:hover {
            color: #fff;
            background: rgba(155, 205, 255, 0.14);
            border-color: rgba(40, 192, 245, 0.4);
            transform: translateY(-2px);
        }

        .site-footer {
            background: rgba(7, 13, 27, 0.94);
            border-top: 1px solid var(--line);
            padding: 54px 0 26px;
            position: relative;
            z-index: 2;
        }

        .footer-brand {
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: var(--ink-2);
            font-size: 15px;
            line-height: 1.8;
            margin: 18px 0 0;
            max-width: 340px;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin: 18px 0 16px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
            color: var(--ink-2);
            font-size: 15px;
        }

        .footer-links a {
            color: var(--ink-2);
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-bottom {
            margin-top: 38px;
            padding-top: 18px;
            border-top: 1px solid rgba(155, 205, 255, 0.1);
            color: var(--muted);
            font-size: 14px;
            display: flex;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom span {
            max-width: 100%;
        }

        .floating-cta {
            position: fixed;
            left: 50%;
            bottom: 16px;
            z-index: 1200;
            transform: translateX(-50%) translateY(150%);
            width: min(1120px, calc(100% - 28px));
            background: rgba(10, 20, 40, 0.9);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(155, 205, 255, 0.22);
            border-radius: 18px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.36);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 12px 14px 12px 22px;
            transition: transform 0.4s ease;
        }

        .floating-cta.show {
            transform: translateX(-50%) translateY(0);
        }

        .floating-cta p {
            margin: 0;
            color: var(--ink-2);
            font-size: 15px;
            line-height: 1.6;
        }

        .floating-cta p strong {
            color: #fff;
        }

        .float-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .float-btn {
            padding: 9px 16px;
            border-radius: 12px;
            background: linear-gradient(135deg, #3D8BFF, #28C0F5);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 6px 20px rgba(40, 192, 245, 0.22);
        }

        .float-btn:hover {
            color: #fff;
            transform: translateY(-1px);
        }

        .float-close {
            width: 34px;
            height: 34px;
            border-radius: 12px;
            border: 1px solid var(--line);
            background: rgba(255, 255, 255, 0.03);
            color: var(--muted);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .float-close:hover {
            background: rgba(255, 107, 107, 0.1);
            color: var(--danger);
        }

        .divider-dot {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--muted);
            font-size: 14px;
            margin-top: 18px;
        }

        @media (max-width: 992px) {
            body {
                font-size: 15px;
            }

            h1 {
                font-size: 38px;
            }

            h2 {
                font-size: 26px;
            }

            .section {
                padding: 62px 0;
            }

            .category-main {
                padding-top: 142px;
            }

            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-buttons {
                justify-content: flex-start;
            }

            .highlight-grid {
                grid-template-columns: 1fr;
            }

            .notice-panel {
                background-size: 240px auto;
            }
        }

        @media (max-width: 768px) {
            .header-top {
                flex-wrap: nowrap;
            }

            .logo-main {
                font-size: 17px;
            }

            .logo-em {
                width: 40px;
                height: 40px;
                font-size: 18px;
            }

            .logo-sub {
                display: block;
                font-size: 11px;
            }

            .header-cta-text {
                display: none;
            }

            .btn-header {
                min-height: 42px;
                padding: 8px 12px;
            }

            .seg-tabs {
                gap: 4px;
                margin-left: -4px;
                width: calc(100% + 8px);
            }

            .nav-tab {
                font-size: 14px;
                padding: 8px 13px;
                gap: 6px;
            }

            .category-main {
                padding-top: 134px;
            }

            .page-hero {
                padding: 42px 0 34px;
            }

            .hero-title {
                font-size: 32px;
            }

            .hero-lead {
                font-size: 16px;
            }

            .timeline-list {
                padding-left: 42px;
            }

            .tl-card {
                padding: 18px 18px;
            }

            .tl-item::before {
                left: -31px;
            }

            .timeline-list::before {
                left: 14px;
            }

            .section {
                padding: 54px 0;
            }

            .faq-body {
                padding-left: 20px;
            }

            .floating-cta {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding-bottom: 14px;
            }

            .float-actions {
                width: 100%;
                justify-content: flex-end;
            }

            .float-btn {
                flex: 1;
                text-align: center;
            }

            .footer-bottom {
                display: block;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-logo .logo-main {
                font-size: 16px;
            }

            .brand-logo .logo-sub {
                display: none;
            }

            .logo-em {
                width: 38px;
                height: 38px;
                font-size: 17px;
                border-radius: 12px;
            }

            .nav-tab {
                font-size: 13px;
                padding: 8px 12px;
                gap: 5px;
            }

            .category-main {
                padding-top: 126px;
            }

            .hero-title {
                font-size: 28px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .hero-flags > li {
                width: 100%;
            }

            h2 {
                font-size: 24px;
            }

            .tl-card {
                padding: 16px;
            }

            .tl-title {
                font-size: 18px;
            }

            .tl-desc {
                font-size: 14px;
            }

            .section-desc {
                font-size: 15px;
            }

            .notice-panel {
                background-image: none;
                padding: 24px 20px;
            }

            .notice-meta {
                align-items: flex-start;
                flex-direction: column;
                gap: 8px;
            }

            .cta-inner .cta-title {
                font-size: 22px;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .floating-cta p {
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #0A1428;
            --bg-deep-2: #0b1730;
            --bg-panel: #0e1d36;
            --glass-bg: rgba(16, 35, 64, 0.72);
            --glass-strong: rgba(20, 42, 78, 0.86);
            --border-glass: rgba(155, 205, 255, 0.16);
            --border-strong: rgba(155, 205, 255, 0.32);
            --text-main: #F2F7FF;
            --text-body: #C0D2E8;
            --text-mut: #829AB8;
            --brand-blue: #3D8BFF;
            --brand-cyan: #28C0F5;
            --brand-gold: #FFC761;
            --status-green: #2ED3A6;
            --status-red: #FF6B6B;
            --heading-font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.22);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-pill: 999px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--heading-font);
            background:
                radial-gradient(1100px 600px at 88% -5%, rgba(40, 192, 245, 0.12), transparent 60%),
                radial-gradient(900px 520px at -5% 18%, rgba(61, 139, 255, 0.14), transparent 55%),
                linear-gradient(180deg, #0B172E 0%, #0A1428 42%, #0A1326 100%);
            background-attachment: fixed;
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
        }
        body::selection {
            background: rgba(61, 139, 255, 0.35);
            color: #ffffff;
        }
        img {
            max-width: 100%;
        }
        a {
            text-decoration: none;
        }
        a:hover {
            text-decoration: none;
        }
        .btn {
            border-radius: var(--radius-pill);
            font-weight: 600;
            transition: all .28s ease;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(61, 139, 255, 0.55);
            outline-offset: 2px;
        }
        .btn-primary-glow {
            background: linear-gradient(120deg, var(--brand-blue), var(--brand-cyan));
            border: 0;
            color: white;
            padding: 11px 26px;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .16), 0 10px 34px rgba(40, 192, 245, 0.22), 0 4px 14px rgba(0, 0, 0, .28);
        }
        .btn-primary-glow:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .2), 0 16px 42px rgba(40, 192, 245, 0.28), 0 6px 18px rgba(0, 0, 0, .3);
        }
        .btn-outline-glass {
            background: rgba(18, 40, 76, 0.5);
            border: 1px solid var(--border-strong);
            color: var(--text-main);
            padding: 10px 24px;
        }
        .btn-outline-glass:hover {
            color: white;
            border-color: rgba(40, 192, 245, .65);
            box-shadow: 0 0 0 4px rgba(40, 192, 245, .10);
            transform: translateY(-2px);
        }
        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(9, 16, 32, 0.78);
            -webkit-backdrop-filter: blur(18px) saturate(1.25);
            backdrop-filter: blur(18px) saturate(1.25);
            border-bottom: 1px solid var(--border-glass);
            transition: background .28s ease, box-shadow .28s ease;
        }
        .site-header.is-sticky {
            background: rgba(8, 17, 34, 0.92);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.22);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 13px 0 2px;
            gap: 16px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: var(--text-main);
        }
        .brand-logo:hover {
            color: var(--text-main);
        }
        .logo-em {
            width: 46px;
            height: 46px;
            border-radius: 13px;
            display: grid;
            place-items: center;
            font-size: 20px;
            color: #eef6ff;
            background: linear-gradient(140deg, rgba(61, 139, 255, .9), rgba(40, 192, 245, .7));
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .16), 0 8px 24px rgba(61, 139, 255, .32);
        }
        .logo-main {
            display: block;
            font-size: 23px;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .logo-sub {
            display: block;
            font-size: 13px;
            color: var(--text-mut);
            letter-spacing: 0.06em;
        }
        .header-actions {
            margin-left: auto;
            flex-shrink: 0;
        }
        .btn-header {
            padding: 8px 20px;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .header-tabs-row {
            padding: 10px 0 12px;
        }
        .seg-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
            padding: 1px;
        }
        .seg-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 17px;
            border-radius: var(--radius-pill);
            color: #b6cbe4;
            font-size: 15px;
            font-weight: 500;
            border: 1px solid transparent;
            transition: all .22s ease;
            background: transparent;
        }
        .nav-tab i {
            color: #7da1c9;
            font-size: 14px;
            transition: color .2s;
        }
        .nav-tab:hover {
            color: #ffffff;
            background: rgba(61, 139, 255, 0.12);
            border-color: rgba(61, 139, 255, 0.18);
        }
        .nav-tab:hover i {
            color: #b9d4ff;
        }
        .nav-tab.active {
            color: #ffffff;
            background: linear-gradient(120deg, rgba(61, 139, 255, .26), rgba(40, 192, 245, .16));
            border-color: rgba(61, 139, 255, .46);
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .04), 0 0 26px rgba(61, 139, 255, .18), inset 0 0 22px rgba(40, 192, 245, .05);
        }
        .nav-tab.active i {
            color: var(--brand-cyan);
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .news-hero {
            position: relative;
            padding: 76px 0 62px;
            overflow: hidden;
        }
        .news-hero .hero-scenery {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: linear-gradient(90deg, rgba(10, 20, 40, .82) 0%, rgba(10, 20, 40, .56) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 18%;
            opacity: .62;
            mix-blend-mode: screen;
        }
        .news-hero .hero-scenery:after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(900px 380px at 75% 20%, rgba(40, 192, 245, .16), transparent 70%);
        }
        .news-hero .container {
            position: relative;
            z-index: 2;
        }
        .pane-crumb {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 30px;
            color: var(--text-mut);
            font-size: 14px;
            flex-wrap: wrap;
        }
        .pane-crumb a {
            color: #aac6e6;
        }
        .pane-crumb a:hover {
            color: var(--brand-cyan);
        }
        .crumb-dot {
            color: rgba(255, 255, 255, .28);
        }
        .eyebrow-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(61, 139, 255, .13);
            color: #9bd0ff;
            border: 1px solid rgba(61, 139, 255, .22);
            border-radius: var(--radius-pill);
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 500;
        }
        .cat-h1 {
            color: var(--text-main);
            font-size: 48px;
            line-height: 1.16;
            font-weight: 800;
            margin: 16px 0 16px;
            letter-spacing: .01em;
        }
        .cat-h1 .h1-accent {
            background: linear-gradient(100deg, #ffffff, #6fd0ff 56%, var(--brand-blue));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-lead {
            max-width: 650px;
            font-size: 17px;
            color: #cfdef0;
            margin-bottom: 28px;
        }
        .hero-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 12px;
        }
        .mini-chip {
            background: rgba(12, 30, 58, .6);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-pill);
            padding: 6px 15px;
            color: #c6dcf2;
            font-size: 13px;
        }
        .mini-chip i {
            color: var(--brand-gold);
            margin-right: 6px;
        }
        .news-hero-info {
            padding: 30px;
            margin-top: 8px;
            border-radius: var(--radius-lg);
            background: rgba(18, 40, 76, .60);
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: var(--text-body);
            position: relative;
        }
        .news-hero-info .info-title {
            display: flex;
            gap: 10px;
            color: var(--text-main);
            font-weight: 600;
            font-size: 20px;
            align-items: center;
            margin-bottom: 16px;
        }
        .news-hero-info .info-icon {
            color: var(--brand-gold);
        }
        .news-hero-info ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .news-hero-info li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .05);
        }
        .news-hero-info li:last-child {
            border-bottom: 0;
        }
        .news-hero-info .k-label {
            color: #aebeD2;
        }
        .news-hero-info .k-count {
            background: rgba(40, 192, 245, .14);
            padding: 2px 10px;
            border-radius: 30px;
            font-size: 12px;
            color: #aee4ff;
            white-space: nowrap;
        }
        .news-hero-info .k-hot {
            background: rgba(255, 199, 97, .13);
            color: var(--brand-gold);
        }

        .section-block {
            padding: 78px 0;
        }
        .section-block + .section-block {
            padding-top: 0;
        }
        .section-head {
            margin-bottom: 18px;
        }
        .section-eyebrow {
            color: var(--brand-cyan);
            font-weight: 600;
            letter-spacing: .12em;
            font-size: 13px;
            text-transform: uppercase;
            margin-bottom: 6px;
        }
        .section-title {
            color: var(--text-main);
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 12px;
        }
        .section-desc {
            color: var(--text-mut);
            font-size: 15px;
            max-width: 720px;
        }

        .news-editorial {
            padding: 34px 0 58px;
            background: linear-gradient(180deg, rgba(19, 38, 68, .42), transparent 60%);
        }
        .featured-main {
            background: rgba(18, 41, 76, .60);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: 100%;
            transition: transform .28s ease, border-color .28s ease;
        }
        .featured-main:hover {
            transform: translateY(-4px);
            border-color: rgba(40, 192, 245, .4);
        }
        .featured-cover {
            position: relative;
            min-height: 250px;
            background: #12243e;
            overflow: hidden;
        }
        .featured-cover img {
            object-fit: cover;
            width: 100%;
            height: 100%;
            position: absolute;
            inset: 0;
        }
        .featured-cover .cover-filter {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 18, 36, .1), rgba(9, 17, 34, .94) 92%);
        }
        .featured-label {
            position: absolute;
            left: 24px;
            bottom: 20px;
            z-index: 3;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .label-pill {
            border-radius: var(--radius-pill);
            padding: 4px 13px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(9, 22, 44, .72);
            border: 1px solid rgba(155, 205, 255, .2);
            color: #deebff;
            backdrop-filter: blur(8px);
        }
        .label-gold {
            color: var(--brand-gold);
        }
        .featured-body {
            padding: 26px 28px 28px;
        }
        .featured-body h2 {
            color: var(--text-main);
            font-size: 24px;
            font-weight: 800;
            line-height: 1.38;
            margin-bottom: 14px;
        }
        .featured-body h2 a {
            color: var(--text-main);
        }
        .featured-body p {
            color: #c7d6E9;
            margin-bottom: 18px;
            font-size: 15px;
        }
        .featured-links {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
        }
        .inline-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brand-cyan);
            font-size: 14px;
            font-weight: 600;
        }
        .inline-link:hover {
            color: #63e2ff;
        }
        .editor-note {
            height: 100%;
            background: rgba(14, 31, 57, .72);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 27px 24px 22px;
            position: relative;
            overflow: hidden;
        }
        .editor-note::before {
            content: '\201C';
            position: absolute;
            top: -12px;
            right: 10px;
            font-size: 130px;
            line-height: 1;
            color: rgba(61, 139, 255, .2);
            font-family: Georgia, serif;
        }
        .editor-note .editor-top {
            display: flex;
            align-items: center;
            gap: 11px;
            margin-bottom: 17px;
            color: white;
            font-weight: 700;
            font-size: 20px;
        }
        .editor-note .editor-icon {
            color: var(--brand-gold);
        }
        .editor-note p {
            color: #c0d2e6;
            font-size: 14.5px;
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .editor-note .editor-author {
            margin-top: 14px;
            color: var(--text-mut);
            font-size: 13px;
            font-style: normal;
        }

        .news-list-section {
            padding: 80px 0 24px;
        }
        .news-grid-card {
            background: rgba(15, 35, 63, .6);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 100%;
            transition: transform .26s ease, border .26s ease, box-shadow .26s ease;
            display: flex;
            flex-direction: column;
        }
        .news-grid-card:hover {
            transform: translateY(-3px);
            border-color: rgba(80, 165, 255, .36);
            box-shadow: 0 14px 34px rgba(0, 0, 0, .24);
        }
        .news-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            background: linear-gradient(130deg, #142b4b, #0d1a31);
            overflow: hidden;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .news-grid-card:hover .news-thumb img {
            transform: scale(1.03);
        }
        .news-thumb .thumb-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(8, 16, 31, .4));
        }
        .thumb-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(6, 19, 36, .74);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(179, 218, 255, .2);
            color: #cbe5ff;
            border-radius: var(--radius-pill);
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
        }
        .news-grid-card-body {
            padding: 20px 20px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-grid-card-body h3 {
            color: var(--text-main);
            font-size: 19px;
            line-height: 1.52;
            font-weight: 750;
            margin: 0 0 8px;
        }
        .news-grid-card-body h3 a {
            color: inherit;
        }
        .news-grid-card-body p {
            font-size: 14px;
            color: #afc1da;
            margin-bottom: 12px;
            line-height: 1.7;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid rgba(155, 205, 255, .1);
            color: var(--text-mut);
            font-size: 13px;
            flex-wrap: wrap;
        }
        .news-card-meta .date-txt {
            color: #92a9c5;
        }
        .meta-link {
            color: var(--brand-cyan);
            font-size: 13px;
            font-weight: 600;
        }
        .meta-link i {
            margin-left: 4px;
            font-size: 11px;
        }
        .meta-link:hover {
            color: var(--brand-gold);
        }

        .cross-section {
            padding-top: 96px;
        }
        .cross-section .section-title {
            font-size: 26px;
        }
        .cross-card {
            height: 100%;
            padding: 21px 20px 19px;
            background: rgba(15, 35, 64, .52);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            transition: all .25s ease;
            display: block;
            color: var(--text-body);
        }
        .cross-card:hover {
            transform: translateY(-4px);
            border-color: rgba(61, 139, 255, .48);
            color: white;
            background: rgba(16, 46, 82, .78);
        }
        .cross-card .cross-ico {
            width: 42px;
            height: 42px;
            border-radius: 13px;
            display: grid;
            place-items: center;
            background: rgba(61, 139, 255, .18);
            color: #8ec9ff;
            font-size: 19px;
            margin-bottom: 15px;
        }
        .cross-card .cross-name {
            color: var(--text-main);
            font-weight: 700;
            font-size: 18px;
            margin-bottom: 5px;
            display: block;
        }
        .cross-card .cross-desc {
            font-size: 13px;
            color: #9bb0ca;
            line-height: 1.65;
        }

        .faq-section {
            padding: 92px 0 76px;
        }
        .faq-wrap-title {
            margin-bottom: 38px;
        }
        .faq-list {
            background: rgba(13, 29, 52, .44);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .faq-list .accordion-item {
            background: transparent;
            border: 0;
            border-bottom: 1px solid rgba(155, 205, 255, .1);
        }
        .faq-list .accordion-item:last-child {
            border-bottom: 0;
        }
        .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 650;
            padding: 22px 20px 22px 24px;
            box-shadow: none;
            font-size: 16px;
            border-radius: 0 !important;
            line-height: 1.55;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(61, 139, 255, .1);
            color: #f0f7ff;
        }
        .accordion-button::after {
            filter: invert(.75) sepia(.45) saturate(3) hue-rotate(170deg);
        }
        .accordion-button:focus {
            box-shadow: inset 0 0 0 2px rgba(61, 139, 255, .2);
        }
        .accordion-item .accordion-collapse .accordion-body {
            padding: 8px 26px 26px 24px;
            color: #c5d5e8;
            background: rgba(15, 36, 63, .32);
        }
        .faq-side-help {
            padding: 28px 24px;
            color: var(--text-main);
            border-radius: var(--radius-lg);
            background: linear-gradient(150deg, rgba(22, 50, 88, .80), rgba(15, 35, 67, .52));
            border: 1px solid var(--border-glass);
        }
        .faq-side-help .side-ico {
            font-size: 26px;
            margin-bottom: 12px;
            color: var(--brand-gold);
        }
        .faq-side-help h3 {
            font-size: 18px;
            font-weight: 750;
            margin-bottom: 10px;
        }
        .faq-side-help p {
            color: #b1c6dc;
            font-size: 14px;
        }
        .faq-side-help a {
            color: var(--brand-cyan);
            font-weight: 650;
        }

        .cta-strip-section {
            padding: 0 0 80px;
        }
        .cta-strip-inner {
            padding: 40px 30px 36px;
            border-radius: 24px;
            background:
                linear-gradient(110deg, rgba(15, 40, 74, .84), rgba(10, 26, 49, .82)),
                url('/assets/images/backpic/back-1.webp') center 35% no-repeat;
            background-size: cover;
            background-blend-mode: overlay;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow-card);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .cta-strip-inner h2 {
            color: white;
            font-size: 27px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .cta-strip-inner p {
            color: #c8d9ee;
            font-size: 15px;
            max-width: 580px;
        }
        .cta-actions {
            display: flex;
            gap: 13px;
            flex-wrap: wrap;
        }
        .cta-actions .btn-primary-glow,
        .cta-actions .btn-outline-glass {
            padding: 13px 30px;
        }

        .site-footer {
            background: rgba(7, 14, 29, .94);
            border-top: 1px solid var(--border-glass);
            padding: 66px 0 28px;
        }
        .site-footer .row {
            row-gap: 34px;
        }
        .site-footer .brand-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: var(--text-mut);
            font-size: 14px;
            line-height: 1.85;
            max-width: 330px;
            margin: 0;
        }
        .footer-title {
            color: #dce9FF;
            font-weight: 700;
            font-size: 17px;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 10px;
            display: grid;
        }
        .footer-links a,
        .footer-links li {
            color: #8ea9c7;
            font-size: 14px;
        }
        .footer-links a:hover {
            color: var(--brand-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(155, 205, 255, .1);
            padding-top: 22px;
            margin-top: 44px;
            text-align: center;
            color: #6b86a5;
            font-size: 13px;
            line-height: 1.8;
        }

        @media (max-width: 1199.98px) {
            .cat-h1 {
                font-size: 42px;
            }
        }
        @media (max-width: 991.98px) {
            .news-hero {
                padding: 62px 0 42px;
            }
            .cat-h1 {
                font-size: 38px;
            }
            .news-hero .col-lg-4 {
                margin-top: 34px;
            }
            .section-block {
                padding: 62px 0;
            }
            .featured-main {
                margin-bottom: 22px;
            }
            .cta-strip-inner {
                padding: 30px 18px;
            }
            .cta-strip-inner h2 {
                font-size: 23px;
            }
        }
        @media (max-width: 767.98px) {
            body {
                font-size: 15px;
            }
            .header-top .btn-header {
                padding: 7px 12px;
                font-size: 12px;
                gap: 5px;
            }
            .header-top .header-cta-text {
                display: none;
            }
            .header-top {
                padding-top: 11px;
            }
            .brand-logo {
                gap: 8px;
            }
            .logo-main {
                font-size: 20px;
            }
            .logo-sub {
                font-size: 11px;
            }
            .logo-em {
                width: 40px;
                height: 40px;
                font-size: 17px;
            }
            .nav-tab {
                font-size: 14px;
                padding: 7px 12px;
                gap: 5px;
            }
            .news-hero {
                padding: 44px 0 34px;
            }
            .pane-crumb {
                margin-bottom: 20px;
            }
            .cat-h1 {
                font-size: 34px;
            }
            .hero-lead {
                font-size: 15px;
                margin-bottom: 20px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 14px;
            }
            .featured-body {
                padding: 18px 17px;
            }
            .featured-body h2 {
                font-size: 19px;
            }
            .featured-cover {
                min-height: 190px;
            }
            .editor-note {
                margin-top: 20px;
                padding: 20px 18px;
            }
            .section-block {
                padding: 46px 0;
            }
            .faq-section {
                padding: 54px 0 44px;
            }
            .cta-strip-section {
                padding-bottom: 48px;
            }
            .cta-actions .btn {
                width: 100%;
                margin-top: 6px;
            }
            .cta-actions {
                width: 100%;
            }
            .site-footer {
                padding-top: 52px;
            }
            .footer-links {
                grid-template-columns: 1fr;
                gap: 7px;
            }
        }
        @media (max-width: 575.98px) {
            .cat-h1 {
                font-size: 30px;
            }
            .cat-h1 .h1-accent {
                -webkit-text-fill-color: currentColor;
                color: #ffffff;
                background: none;
            }
            .news-hero-info {
                padding: 20px 17px;
            }
            .hero-keywords .mini-chip {
                font-size: 12px;
                padding: 5px 11px;
            }
            .news-grid-card-body {
                padding: 16px 15px;
            }
            .news-grid-card-body h3 {
                font-size: 17px;
            }
            .site-footer {
                padding-bottom: 24px;
            }
            .footer-top-title {
                font-size: 20px;
            }
            .cta-strip-inner h2 {
                font-size: 20px;
            }
            .cta-strip-inner {
                padding: 22px 12px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #0A1428;
            --bg-lift: #0F1F38;
            --glass: rgba(22, 44, 76, 0.72);
            --glass-strong: rgba(13, 27, 47, 0.92);
            --line: rgba(155, 205, 255, 0.16);
            --line-light: rgba(155, 205, 255, 0.26);
            --text-main: #F2F7FF;
            --text-secondary: #C0D2E8;
            --text-muted: #829AB8;
            --brand: #3D8BFF;
            --brand-hi: #28C0F5;
            --brand-glow: rgba(40, 192, 245, 0.45);
            --amber: #FFC761;
            --success: #2ED3A6;
            --danger: #FF6B6B;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.22);
            --ease: all .28s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 170px;
        }

        body {
            margin: 0;
            font-family: var(--font-family);
            background:
                radial-gradient(1100px 520px at 88% -8%, rgba(40, 192, 245, 0.12), transparent 60%),
                radial-gradient(900px 480px at -10% 32%, rgba(61, 139, 255, 0.09), transparent 55%),
                var(--bg-deep);
            background-attachment: fixed;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.78;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        a {
            color: var(--brand-hi);
            text-decoration: none;
            transition: var(--ease);
        }

        a:hover {
            color: #8fd8ff;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
        }

        @media (min-width: 1400px) {
            .container {
                max-width: 1280px;
            }
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-main);
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 12px;
        }

        h2 {
            font-size: clamp(24px, 2.2vw, 30px);
        }

        h3 {
            font-size: 20px;
        }

        p {
            margin-bottom: 1rem;
        }

        .main-wrap {
            overflow: clip;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1060;
            background: rgba(10, 20, 40, 0.86);
            -webkit-backdrop-filter: blur(18px) saturate(130%);
            backdrop-filter: blur(18px) saturate(130%);
            border-bottom: 1px solid var(--line);
            transition: var(--ease);
        }

        .site-header.is-scrolled {
            background: rgba(7, 15, 31, 0.92);
            box-shadow: 0 10px 36px rgba(0, 0, 0, 0.34);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 12px;
            padding-bottom: 10px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-em {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--brand), var(--brand-hi));
            color: #fff;
            font-size: 19px;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 10px 28px rgba(40, 192, 245, 0.22);
        }

        .logo-main {
            display: block;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            letter-spacing: 0.01em;
        }

        .logo-sub {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.4;
            margin-top: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-header {
            padding: 10px 20px;
            min-width: 0;
        }

        .header-tabs-row {
            padding-bottom: 12px;
        }

        .seg-tabs {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 2px 2px 4px;
            margin: -2px;
        }

        .seg-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            flex: 0 0 auto;
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            border: 1px solid transparent;
            text-decoration: none;
            transition: var(--ease);
        }

        .nav-tab i {
            color: var(--text-muted);
            font-size: 13px;
            transition: var(--ease);
        }

        .nav-tab:hover {
            color: #fff;
            background: rgba(61, 139, 255, 0.16);
            border-color: rgba(155, 205, 255, 0.14);
        }

        .nav-tab:hover i {
            color: var(--brand-hi);
        }

        .nav-tab.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.22), rgba(40, 192, 245, 0.18));
            border-color: rgba(40, 192, 245, 0.42);
            box-shadow: 0 0 22px rgba(40, 192, 245, 0.12);
        }

        .nav-tab.active i {
            color: var(--brand-hi);
        }

        /* ===== Buttons ===== */
        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(255, 255, 255, 0.22);
            padding: 11px 24px;
            background: linear-gradient(120deg, var(--brand), var(--brand-hi));
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            box-shadow: 0 6px 24px rgba(40, 192, 245, 0.24), 0 6px 22px rgba(0, 0, 0, 0.18);
            transition: var(--ease);
        }

        .btn-primary-glow:hover,
        .btn-primary-glow:focus-visible {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 36px rgba(40, 192, 245, 0.42), 0 8px 20px rgba(0, 0, 0, 0.26);
        }

        .btn-primary-glow:active {
            transform: translateY(0);
            box-shadow: 0 4px 16px rgba(40, 192, 245, 0.28);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            background: rgba(61, 139, 255, 0.08);
            border: 1px solid var(--line-light);
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            text-decoration: none;
            transition: var(--ease);
        }

        .btn-ghost:hover {
            color: #fff;
            background: rgba(61, 139, 255, 0.18);
            border-color: rgba(40, 192, 245, 0.45);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        /* ===== Category lead ===== */
        .category-lead {
            position: relative;
            padding: 84px 0 68px;
            background:
                linear-gradient(180deg, rgba(10, 20, 40, 0.82), rgba(15, 31, 56, 0.88)),
                url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            border-bottom: 1px solid var(--line);
        }

        .crumb-list {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .crumb-list a {
            color: var(--text-secondary);
            text-decoration: none;
        }

        .crumb-list a:hover {
            color: #fff;
        }

        .crumb-list i {
            font-size: 12px;
        }

        .crumb-list .current {
            color: var(--text-muted);
        }

        .lead-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 14px;
            border-radius: var(--radius-pill);
            background: rgba(61, 139, 255, 0.12);
            border: 1px solid rgba(155, 205, 255, 0.18);
            color: var(--brand-hi);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }

        .lead-title {
            font-size: clamp(30px, 4vw, 44px);
            font-weight: 800;
            line-height: 1.32;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .lead-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 780px;
            margin-bottom: 22px;
        }

        .lead-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 26px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .lead-meta i {
            color: var(--brand-hi);
            margin-right: 6px;
        }

        .lead-note {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--glass);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .lead-note i {
            font-size: 22px;
            color: var(--amber);
        }

        /* ===== TOC ===== */
        .toc-section {
            background: rgba(15, 31, 56, 0.52);
            border-bottom: 1px solid var(--line);
        }

        .toc-inner {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: nowrap;
            padding: 16px 0;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .toc-inner::-webkit-scrollbar {
            display: none;
        }

        .toc-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            flex: 0 0 auto;
            color: var(--text-main);
            font-size: 14px;
            font-weight: 700;
        }

        .toc-links {
            display: flex;
            gap: 8px;
            flex: 0 0 auto;
        }

        .toc-links a {
            flex: 0 0 auto;
            display: inline-flex;
            padding: 7px 14px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--line);
            background: rgba(10, 20, 40, 0.42);
            color: var(--text-secondary);
            font-size: 14px;
            text-decoration: none;
            transition: var(--ease);
        }

        .toc-links a:hover {
            color: #fff;
            border-color: rgba(40, 192, 245, 0.42);
            background: rgba(61, 139, 255, 0.12);
        }

        /* ===== Content layout ===== */
        .story-body {
            padding: 74px 0 80px;
        }

        .content-main-section {
            padding-bottom: 48px;
            margin-bottom: 48px;
            border-bottom: 1px solid rgba(155, 205, 255, 0.12);
        }

        .content-main-section:last-of-type {
            border-bottom: 0;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-hi);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-kicker::before {
            content: "";
            width: 26px;
            height: 1px;
            background: linear-gradient(90deg, var(--brand-hi), transparent);
        }

        .content-main-section h2 {
            margin-bottom: 14px;
        }

        .content-main-section .lead-copy {
            font-size: 16px;
            color: var(--text-secondary);
        }

        .goal-list {
            margin: 22px 0 4px;
        }

        .goal-item {
            display: flex;
            gap: 16px;
            padding: 16px 2px;
            border-bottom: 1px dashed rgba(155, 205, 255, 0.16);
        }

        .goal-item:last-child {
            border-bottom: 0;
        }

        .goal-icon {
            flex: 0 0 48px;
            width: 48px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: rgba(61, 139, 255, 0.12);
            border: 1px solid rgba(155, 205, 255, 0.18);
            color: var(--brand-hi);
            font-size: 18px;
        }

        .goal-copy h3 {
            margin-bottom: 4px;
            font-size: 18px;
        }

        .goal-copy p {
            margin-bottom: 0;
            font-size: 15px;
            color: var(--text-secondary);
        }

        .inline-figure {
            margin: 28px 0 20px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            background: rgba(15, 31, 56, 0.55);
        }

        .inline-figure img {
            display: block;
            width: 100%;
            aspect-ratio: 16 / 7;
            object-fit: cover;
        }

        .figure-caption {
            padding: 10px 16px;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--line);
        }

        /* channel match */
        .match-list {
            margin: 18px 0 0;
            padding: 0;
            list-style: none;
        }

        .match-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 2px;
            border-bottom: 1px solid rgba(155, 205, 255, 0.12);
        }

        .match-item:last-child {
            border-bottom: none;
        }

        .match-type {
            flex: 0 0 auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 12px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            color: var(--text-main);
            background: rgba(61, 139, 255, 0.12);
            border: 1px solid rgba(155, 205, 255, 0.16);
        }

        .match-info {
            color: var(--text-secondary);
            font-size: 15px;
        }

        .match-info strong {
            color: var(--text-main);
        }

        /* steps */
        .guide-step-list {
            position: relative;
            margin: 26px 0 0;
            padding-left: 0;
            list-style: none;
        }

        .guide-step-list::before {
            content: "";
            position: absolute;
            left: 24px;
            top: 34px;
            bottom: 34px;
            width: 1px;
            background: linear-gradient(180deg, rgba(61, 139, 255, 0.6), rgba(40, 192, 245, 0.12));
        }

        .step-card {
            position: relative;
            padding: 0 0 32px 86px;
            margin: 0;
        }

        .step-card:last-child {
            padding-bottom: 0;
        }

        .step-num {
            position: absolute;
            left: 0;
            top: 2px;
            width: 48px;
            height: 48px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.94), rgba(40, 192, 245, 0.88));
            color: #fff;
            font-weight: 800;
            font-size: 17px;
            box-shadow: 0 8px 24px rgba(40, 192, 245, 0.2);
        }

        .step-copy h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-copy p {
            margin-bottom: 0;
            color: var(--text-secondary);
            font-size: 15px;
        }

        .step-copy p+a,
        .step-copy a {
            color: var(--brand-hi);
            font-size: 14px;
            font-weight: 600;
        }

        /* route mini cards */
        .route-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
            margin-top: 22px;
        }

        .route-card {
            border-radius: var(--radius-md);
            padding: 18px;
            background: rgba(22, 44, 76, 0.46);
            border: 1px solid var(--line);
            transition: var(--ease);
            position: relative;
            overflow: hidden;
        }

        .route-card::after {
            content: "";
            position: absolute;
            right: -30px;
            top: -30px;
            width: 80px;
            height: 80px;
            background: radial-gradient(circle, rgba(40, 192, 245, 0.2), transparent 70%);
        }

        .route-card:hover {
            border-color: rgba(40, 192, 245, 0.38);
            background: rgba(22, 44, 76, 0.7);
            transform: translateY(-4px);
        }

        .route-icon {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 13px;
            font-size: 17px;
            margin-bottom: 14px;
            background: rgba(255, 199, 97, 0.1);
            color: var(--amber);
            border: 1px solid rgba(255, 199, 97, 0.22);
        }

        .route-icon.blue {
            background: rgba(61, 139, 255, 0.12);
            color: var(--brand-hi);
            border-color: rgba(61, 139, 255, 0.26);
        }

        .route-icon.green {
            background: rgba(46, 211, 166, 0.12);
            color: var(--success);
            border-color: rgba(46, 211, 166, 0.26);
        }

        .route-card h3 {
            font-size: 17px;
            margin-bottom: 6px;
        }

        .route-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* table */
        .table-wrap {
            overflow-x: auto;
            margin-top: 20px;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: rgba(15, 31, 56, 0.36);
        }

        .speed-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .speed-table th,
        .speed-table td {
            padding: 14px 16px;
            border-bottom: 1px solid rgba(155, 205, 255, 0.1);
            vertical-align: middle;
            text-align: left;
        }

        .speed-table th {
            color: var(--text-main);
            background: rgba(61, 139, 255, 0.1);
            font-weight: 700;
            white-space: nowrap;
        }

        .speed-table td {
            min-width: 180px;
        }

        .speed-table tr:last-child td {
            border-bottom: 0;
        }

        .table-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            color: var(--brand-hi);
            font-weight: 600;
        }

        /* side rail */
        .side-rail {
            position: sticky;
            top: 160px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .side-panel {
            border-radius: var(--radius-lg);
            background: linear-gradient(145deg, rgba(22, 44, 76, 0.72), rgba(15, 31, 56, 0.6));
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            padding: 22px;
        }

        .side-panel-head {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
            color: var(--text-main);
            font-weight: 800;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--line);
            margin-bottom: 16px;
        }

        .side-panel-head i {
            color: var(--brand-hi);
        }

        .side-link-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .side-link-list li {
            padding: 10px 0;
            border-bottom: 1px dashed rgba(155, 205, 255, 0.14);
        }

        .side-link-list li:last-child {
            border-bottom: 0;
        }

        .side-link-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .side-link-list small {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 400;
        }

        .side-link-list a:hover {
            color: var(--brand-hi);
        }

        .side-note {
            padding: 14px 0 2px;
        }

        .side-note h3 {
            font-size: 16px;
            margin-bottom: 6px;
        }

        .side-note p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            line-height: 1.7;
        }

        .side-cta {
            display: grid;
            gap: 10px;
            margin-top: 6px;
        }

        .side-quote {
            background: rgba(255, 199, 97, 0.08);
            padding: 16px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 199, 97, 0.2);
            color: var(--text-secondary);
            font-size: 14px;
        }

        .side-quote i {
            color: var(--amber);
            margin-right: 6px;
        }

        /* FAQ section */
        .faq-section {
            padding: 90px 0 80px;
            background: rgba(15, 31, 56, 0.5);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .faq-header {
            max-width: 720px;
            margin-bottom: 32px;
        }

        .faq-header .section-kicker::before {
            content: "";
            width: 26px;
            height: 1px;
            background: linear-gradient(90deg, var(--amber), transparent);
        }

        .faq-accordion .accordion-item {
            background: rgba(10, 20, 40, 0.42);
            border: 1px solid var(--line);
            border-radius: var(--radius-md) !important;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 22px;
            box-shadow: none;
            border: 0;
            outline: none;
            line-height: 1.6;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(61, 139, 255, 0.18);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(61, 139, 255, 0.1);
            color: var(--text-main);
            border-bottom: 1px solid var(--line);
        }

        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%238fd8ff'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            background-size: 1.15em;
            background-position: center;
            background-repeat: no-repeat;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .faq-accordion .accordion-body {
            background: rgba(10, 20, 40, 0.3);
            padding: 18px 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        /* CTA band */
        .cta-section {
            padding: 92px 0;
            background:
                radial-gradient(760px 300px at 72% 30%, rgba(40, 192, 245, 0.14), transparent 70%),
                linear-gradient(120deg, rgba(15, 31, 56, 0.92), rgba(10, 20, 40, 0.98));
        }

        .cta-card {
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.15), rgba(40, 192, 245, 0.08));
            border: 1px solid rgba(40, 192, 245, 0.28);
            border-radius: 24px;
            padding: 44px;
            box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
        }

        .cta-card h2 {
            font-size: clamp(22px, 3vw, 30px);
            margin-bottom: 12px;
        }

        .cta-card p {
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 24px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* Footer */
        .site-footer {
            background: rgba(7, 14, 28, 0.94);
            border-top: 1px solid var(--line);
            padding: 66px 0 0;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 18px;
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(155, 205, 255, 0.12);
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--ease);
        }

        .footer-links a:hover {
            color: var(--brand-hi);
            padding-left: 4px;
        }

        .footer-bottom {
            margin-top: 50px;
            border-top: 1px solid rgba(155, 205, 255, 0.12);
            padding: 22px 0 110px;
            text-align: center;
            color: var(--text-muted);
            font-size: 13px;
        }

        /* fixed convert bar */
        .fixed-convert {
            position: fixed;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 1080;
            background: rgba(10, 20, 40, 0.9);
            -webkit-backdrop-filter: blur(20px) saturate(140%);
            backdrop-filter: blur(20px) saturate(140%);
            border-top: 1px solid rgba(155, 205, 255, 0.26);
            box-shadow: 0 -10px 36px rgba(0, 0, 0, 0.28);
            padding: 12px 0;
            transform: translateY(110%);
            transition: transform .42s cubic-bezier(.22, 1, .36, 1);
        }

        .fixed-convert.show {
            transform: translateY(0);
        }

        .fixed-convert.hide {
            transform: translateY(110%);
        }

        .fixed-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: nowrap;
        }

        .fixed-copy {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 14px;
            min-width: 0;
        }

        .fixed-copy i {
            color: var(--amber);
            font-size: 17px;
            flex: 0 0 auto;
        }

        .fixed-copy span {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 720px;
        }

        .fixed-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: 0 0 auto;
        }

        .btn-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--line);
            background: rgba(61, 139, 255, 0.08);
            color: var(--text-secondary);
            transition: var(--ease);
        }

        .btn-icon:hover {
            border-color: var(--brand-hi);
            color: #fff;
            background: rgba(61, 139, 255, 0.18);
        }

        /* focus accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(40, 192, 245, 0.5);
            outline-offset: 2px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .story-body {
                padding: 56px 0 60px;
            }

            .side-rail {
                position: static;
                margin-top: 28px;
            }

            .category-lead {
                padding: 62px 0 48px;
            }

            .route-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767.98px) {
            .header-top {
                padding-top: 10px;
                padding-bottom: 8px;
            }

            .header-cta-text {
                display: none;
            }

            .btn-header {
                width: 42px;
                height: 42px;
                padding: 0;
                border-radius: 50%;
            }

            .btn-header .fa-solid {
                font-size: 16px;
            }

            .brand-logo {
                gap: 10px;
            }

            .logo-em {
                width: 38px;
                height: 38px;
                border-radius: 12px;
                font-size: 17px;
            }

            .logo-main {
                font-size: 16px;
            }

            .category-lead {
                padding: 50px 0 42px;
            }

            .lead-desc {
                font-size: 15px;
            }

            .lead-meta {
                font-size: 13px;
                gap: 10px 18px;
            }

            .toc-inner {
                padding: 14px 0;
            }

            .story-body {
                padding: 46px 0 50px;
            }

            .route-grid {
                grid-template-columns: 1fr;
            }

            .toc-label {
                font-size: 13px;
            }

            .toc-links a {
                padding: 6px 12px;
                font-size: 13px;
            }

            .inline-figure img {
                aspect-ratio: 16 / 9;
            }

            .cta-card {
                padding: 28px 20px;
                border-radius: 18px;
            }

            .fixed-inner {
                flex-wrap: wrap;
                padding: 4px 0;
            }

            .fixed-copy {
                width: 100%;
            }

            .fixed-copy span {
                max-width: 100%;
                white-space: normal;
            }

            .fixed-actions {
                width: 100%;
                justify-content: flex-end;
            }
        }

        @media (max-width: 575.98px) {
            html {
                scroll-padding-top: 150px;
            }

            .logo-sub {
                display: none;
            }

            .nav-tab {
                padding: 7px 12px;
                font-size: 13px;
                gap: 5px;
            }

            .lead-title {
                font-size: 28px;
            }

            .lead-desc {
                font-size: 14px;
            }

            .roadmap-demo {
                padding: 16px;
            }

            .step-card {
                padding-left: 70px;
            }

            .step-num {
                width: 42px;
                height: 42px;
                border-radius: 14px;
                font-size: 15px;
            }

            .guide-step-list::before {
                left: 21px;
            }

            .faq-section {
                padding: 66px 0 58px;
            }

            .cta-section {
                padding: 60px 0;
            }

            .site-footer {
                padding-top: 50px;
            }

            .footer-bottom {
                padding: 20px 0 100px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.001s !important;
                transition-duration: 0.001s !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category4 */
:root {
            --dark-bg: #0A1428;
            --dark-bg-2: #0F1F38;
            --glass-bg: rgba(22, 44, 76, 0.72);
            --glass-border: rgba(155, 205, 255, 0.16);
            --title-color: #F2F7FF;
            --body-color: #C0D2E8;
            --muted-color: #829AB8;
            --brand-color: #3D8BFF;
            --accent-color: #28C0F5;
            --gold-color: #FFC761;
            --success-color: #2ED3A6;
            --danger-color: #FF6B6B;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-main: 0 8px 30px rgba(0, 0, 0, 0.22);
            --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-main);
            background:
                radial-gradient(circle at 12% 8%, rgba(40, 118, 255, 0.18), transparent 32%),
                radial-gradient(circle at 86% 22%, rgba(40, 192, 245, 0.1), transparent 28%),
                linear-gradient(180deg, #0A1428 0%, #071122 100%);
            background-color: var(--dark-bg);
            color: var(--body-color);
            font-size: 16px;
            line-height: 1.8;
            overflow-x: hidden;
            padding-bottom: 94px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--title-color);
            font-weight: 700;
            line-height: 1.3;
        }

        h1 {
            font-size: clamp(34px, 5vw, 44px);
            letter-spacing: 0.02em;
        }

        h2 {
            font-size: clamp(26px, 3.2vw, 32px);
            margin-bottom: 16px;
        }

        h3 {
            font-size: 22px;
            font-weight: 600;
        }

        p {
            margin: 0 0 18px;
            line-height: 1.8;
        }

        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease, background .25s ease, box-shadow .25s ease, transform .25s ease;
        }

        a:hover {
            color: #b8e4ff;
        }

        img {
            max-width: 100%;
        }

        .main-content {
            min-height: 70vh;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: linear-gradient(180deg, rgba(10, 20, 40, 0.92), rgba(9, 18, 36, 0.88));
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--glass-border);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 10px;
            gap: 20px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: var(--title-color);
            text-decoration: none;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            color: var(--title-color);
        }

        .logo-em {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 14px;
            font-size: 18px;
            color: #fff;
            background: linear-gradient(135deg, #3D8BFF, #28C0F5);
            box-shadow: 0 0 18px rgba(61, 139, 255, 0.45);
        }

        .logo-main {
            display: block;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.03em;
            line-height: 1.2;
        }

        .logo-sub {
            display: block;
            font-size: 12px;
            color: var(--muted-color);
            margin-top: 2px;
            line-height: 1.2;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            font-size: 14px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .header-tabs-row {
            padding-bottom: 12px;
            margin-top: 2px;
        }

        .seg-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 2px 2px 6px;
        }

        .seg-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 16px;
            border-radius: 999px;
            color: #B8CAE0;
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            border: 1px solid transparent;
            background: transparent;
            text-decoration: none;
            transition: all .25s ease;
        }

        .nav-tab i {
            color: var(--muted-color);
            transition: color .25s ease;
        }

        .nav-tab:hover {
            color: #fff;
            background: rgba(61, 139, 255, 0.12);
            border-color: rgba(155, 205, 255, 0.24);
            transform: translateY(-1px);
        }

        .nav-tab:hover i {
            color: var(--accent-color);
        }

        .nav-tab.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.22), rgba(40, 192, 245, 0.16));
            border-color: rgba(61, 139, 255, 0.5);
            box-shadow: 0 0 20px rgba(61, 139, 255, 0.2);
        }

        .nav-tab.active i {
            color: var(--accent-color);
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, #3D8BFF, #28C0F5);
            color: #fff;
            border: none;
            box-shadow: 0 0 14px rgba(61, 139, 255, 0.4), 0 8px 22px rgba(0, 0, 0, 0.25);
            font-weight: 600;
            transition: all .25s ease;
        }

        .btn-primary-glow:hover,
        .btn-primary-glow:focus {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 22px rgba(61, 139, 255, 0.6), 0 12px 30px rgba(0, 0, 0, 0.32);
        }

        .btn-primary-glow:active {
            transform: translateY(0);
        }

        .btn-outline-glow {
            border: 1px solid var(--glass-border);
            color: var(--body-color);
            background: rgba(22, 44, 76, 0.5);
            border-radius: 999px;
            padding: 10px 24px;
            font-weight: 500;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            transition: all .25s ease;
        }

        .btn-outline-glow:hover {
            color: #fff;
            border-color: rgba(61, 139, 255, 0.6);
            background: rgba(61, 139, 255, 0.16);
            transform: translateY(-2px);
        }

        .page-banner {
            position: relative;
            padding: 70px 0 52px;
            background:
                linear-gradient(90deg, rgba(9, 19, 39, 0.92) 0%, rgba(9, 19, 39, 0.72) 100%),
                url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            border-bottom: 1px solid rgba(155, 205, 255, 0.1);
        }

        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 17, 34, 0.15), rgba(8, 17, 34, 0.65));
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .page-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            margin-bottom: 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-color);
            background: rgba(40, 192, 245, 0.12);
            border: 1px solid rgba(40, 192, 245, 0.32);
        }

        .page-title {
            color: #fff;
            margin-bottom: 10px;
        }

        .page-title .title-sep {
            color: var(--gold-color);
            font-size: 0.55em;
            padding: 0 8px;
            vertical-align: middle;
        }

        .page-lead {
            max-width: 860px;
            color: #C5D5E8;
            font-size: 17px;
            margin-bottom: 10px;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted-color);
            margin-top: 18px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: #9FB6D0;
            padding: 3px 6px;
            border-radius: 6px;
        }

        .breadcrumb-nav a:hover {
            color: #fff;
            background: rgba(61, 139, 255, 0.12);
        }

        .breadcrumb-nav i {
            color: var(--muted-color);
            font-size: 11px;
        }

        .faq-section {
            padding: 62px 0 42px;
        }

        .chapter-heading {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 24px;
        }

        .chapter-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 62px;
            height: 62px;
            flex: 0 0 62px;
            border-radius: 18px;
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.45), rgba(40, 192, 245, 0.25));
            border: 1px solid rgba(155, 205, 255, 0.3);
            box-shadow: var(--shadow-main);
        }

        .chapter-heading h2 {
            margin-bottom: 4px;
        }

        .chapter-heading p {
            color: var(--muted-color);
            margin: 0;
            font-size: 15px;
        }

        .chip-filter-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }

        .chip-filter {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 18px;
            border-radius: 999px;
            border: 1px solid rgba(155, 205, 255, 0.16);
            background: rgba(22, 44, 76, 0.46);
            color: #B8CAE0;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all .25s ease;
        }

        .chip-filter:hover {
            color: #fff;
            border-color: rgba(61, 139, 255, 0.5);
            background: rgba(61, 139, 255, 0.18);
            transform: translateY(-2px);
        }

        .chip-filter.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(61, 139, 255, 0.28), rgba(40, 192, 245, 0.22));
            border-color: rgba(61, 139, 255, 0.7);
            box-shadow: 0 0 14px rgba(61, 139, 255, 0.28);
        }

        .faq-list-wrap {
            position: relative;
        }

        .accordion {
            --bs-accordion-bg: transparent;
            --bs-accordion-border-color: transparent;
            --bs-accordion-active-bg: transparent;
        }

        .faq-item.accordion-item {
            display: block;
            margin-bottom: 18px;
            background: rgba(16, 32, 58, 0.68);
            border: 1px solid rgba(155, 205, 255, 0.15);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.22);
            transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
        }

        .faq-item.accordion-item:hover {
            border-color: rgba(155, 205, 255, 0.36);
            box-shadow: 0 10px 26px rgba(0, 0, 0, 0.3);
            transform: translateY(-2px);
        }

        .accordion-header {
            margin-bottom: 0;
        }

        .accordion-button {
            display: flex;
            align-items: center;
            gap: 12px;
            width: 100%;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--title-color);
            background: transparent;
            border: none;
            text-align: left;
            transition: background .25s ease, color .25s ease;
        }

        .accordion-button:hover,
        .accordion-button:not(.collapsed) {
            color: #fff;
            background: rgba(61, 139, 255, 0.08);
            box-shadow: none;
        }

        .accordion-button::after {
            background: transparent;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f078";
            color: var(--accent-color);
            width: auto;
            height: auto;
            margin-left: auto;
            transition: transform .25s ease, color .25s ease;
        }

        .accordion-button:not(.collapsed)::after {
            content: "\f077";
            color: var(--gold-color);
            transform: rotate(0deg);
        }

        .faq-q-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 34px;
            width: 34px;
            height: 34px;
            border-radius: 12px;
            color: var(--accent-color);
            background: rgba(61, 139, 255, 0.14);
            border: 1px solid rgba(61, 139, 255, 0.2);
            font-size: 15px;
        }

        .accordion-body {
            padding: 6px 24px 22px 70px;
            color: #C0D2E8;
            border-top: 1px solid rgba(155, 205, 255, 0.1);
            background: rgba(10, 20, 40, 0.3);
        }

        .accordion-body p {
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .accordion-body ul {
            padding-left: 18px;
            margin-bottom: 10px;
        }

        .accordion-body ul li {
            margin-bottom: 7px;
        }

        .filter-empty {
            padding: 32px;
            text-align: center;
            color: var(--muted-color);
            background: rgba(22, 44, 76, 0.42);
            border: 1px dashed rgba(155, 205, 255, 0.3);
            border-radius: var(--radius-md);
            margin-bottom: 18px;
        }

        .faq-bottom-note {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 14px 18px;
            margin-top: 24px;
            color: #B8CAE0;
            background: rgba(22, 44, 76, 0.44);
            border: 1px solid rgba(155, 205, 255, 0.14);
            border-radius: var(--radius-md);
            font-size: 14px;
        }

        .faq-bottom-note i {
            color: var(--gold-color);
            margin-top: 5px;
        }

        .aside-help-wrap {
            position: sticky;
            top: 128px;
            margin-top: 66px;
        }

        .side-help-card {
            background: linear-gradient(160deg, rgba(24, 48, 82, 0.8), rgba(11, 24, 45, 0.72));
            border: 1px solid rgba(155, 205, 255, 0.18);
            border-radius: 20px;
            padding: 28px;
            box-shadow: var(--shadow-main);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .side-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 58px;
            height: 58px;
            margin-bottom: 18px;
            border-radius: 18px;
            font-size: 24px;
            color: #fff;
            background: linear-gradient(145deg, #3D8BFF, #2ED3A6);
            box-shadow: 0 0 20px rgba(60, 205, 190, 0.24);
        }

        .side-help-card h3 {
            font-size: 21px;
            margin-bottom: 12px;
        }

        .side-help-card p {
            color: var(--body-color);
            font-size: 15px;
            margin-bottom: 20px;
        }

        .check-list {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: #B8CAE0;
            padding: 8px 0;
            border-bottom: 1px dashed rgba(155, 205, 255, 0.12);
        }

        .check-list li:last-child {
            border-bottom: 0;
        }

        .check-list i {
            margin-top: 5px;
            font-size: 13px;
            color: var(--success-color);
        }

        .side-mini-card {
            margin-top: 20px;
            padding: 16px;
            background: rgba(255, 199, 97, 0.08);
            border: 1px solid rgba(255, 199, 97, 0.22);
            border-radius: 14px;
            color: #E4D7B8;
            font-size: 14px;
        }

        .side-mini-card i {
            color: var(--gold-color);
            margin-right: 8px;
        }

        .btn-light-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 22px;
            border-radius: 999px;
            color: #fff;
            background: rgba(61, 139, 255, 0.22);
            border: 1px solid rgba(61, 139, 255, 0.45);
            font-size: 15px;
            font-weight: 600;
            transition: all .25s ease;
        }

        .btn-light-glow:hover {
            color: #fff;
            background: rgba(61, 139, 255, 0.38);
            border-color: rgba(61, 139, 255, 0.9);
            box-shadow: 0 0 18px rgba(61, 139, 255, 0.28);
            transform: translateY(-2px);
        }

        .btn-soft-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: 999px;
            background: rgba(255, 199, 97, 0.14);
            border: 1px solid rgba(255, 199, 97, 0.5);
            color: #fff2d8;
            font-size: 15px;
            font-weight: 600;
            transition: all .25s ease;
        }

        .btn-soft-gold:hover {
            color: #fff;
            background: rgba(255, 199, 97, 0.3);
            border-color: var(--gold-color);
            transform: translateY(-2px);
        }

        .resource-section {
            padding: 40px 0 62px;
        }

        .section-title-center {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 44px;
        }

        .section-title-center .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-color);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }

        .section-title-center h2 {
            margin-bottom: 12px;
        }

        .section-title-center p {
            color: var(--muted-color);
            margin: 0;
        }

        .resource-horizontal-card {
            display: block;
            height: 100%;
            background: linear-gradient(150deg, rgba(23, 45, 78, 0.8), rgba(10, 22, 42, 0.7));
            border: 1px solid rgba(155, 205, 255, 0.16);
            border-radius: 20px;
            padding: 18px;
            color: var(--body-color);
            text-decoration: none;
            transition: all .28s ease;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
        }

        .resource-horizontal-card:hover {
            color: var(--body-color);
            border-color: rgba(61, 139, 255, 0.5);
            transform: translateY(-4px);
            box-shadow: 0 14px 34px rgba(0, 0, 0, 0.32);
        }

        .resource-horizontal-card .row.g-0 {
            align-items: stretch;
        }

        .resource-photo {
            min-height: 130px;
            border-radius: 14px;
            overflow: hidden;
            background: #0f2442;
        }

        .resource-photo img {
            width: 100%;
            height: 100%;
            min-height: 170px;
            object-fit: cover;
            display: block;
        }

        .resource-body {
            padding: 8px 6px 8px 20px;
        }

        .resource-type {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            font-weight: 600;
            color: var(--gold-color);
            margin-bottom: 8px;
        }

        .resource-body h3 {
            font-size: 20px;
            margin-bottom: 10px;
            transition: color .25s ease;
        }

        .resource-body p {
            color: #A9BFD7;
            font-size: 14px;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .resource-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-color);
        }
        .resource-horizontal-card:hover .resource-more {
            color: #fff;
        }

        .help-cta {
            background:
                linear-gradient(90deg, rgba(9, 18, 38, 0.86), rgba(9, 18, 38, 0.72)),
                url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            border-top: 1px solid rgba(155, 205, 255, 0.12);
            border-bottom: 1px solid rgba(155, 205, 255, 0.12);
            padding: 58px 0;
        }

        .cta-panel {
            max-width: 920px;
            margin: 0 auto;
        }

        .cta-panel h2 {
            text-align: center;
            margin-bottom: 18px;
        }

        .cta-panel>p {
            text-align: center;
            color: #B8CBE0;
            max-width: 720px;
            margin: 0 auto 24px;
        }

        .cta-steps {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            padding: 0;
            margin: 0 0 28px;
        }

        .cta-steps li {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            background: rgba(22, 44, 76, 0.5);
            border: 1px solid rgba(155, 205, 255, 0.14);
            border-radius: 999px;
            color: #C0D2E8;
            font-size: 14px;
        }

        .cta-steps i {
            color: var(--success-color);
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .site-footer {
            background: linear-gradient(180deg, #081326, #0A1428);
            border-top: 1px solid rgba(155, 205, 255, 0.1);
            padding: 56px 0 28px;
        }

        .footer-brand {
            margin-bottom: 26px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: #94AFCB;
            font-size: 14px;
            max-width: 330px;
            margin: 0;
        }

        .footer-title {
            position: relative;
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            padding-bottom: 12px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 38px;
            height: 3px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--brand-color), var(--accent-color));
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #9DB4CF;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a::before {
            content: "\f105";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--muted-color);
            font-size: 12px;
            transition: transform .2s ease, color .2s ease;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-links a:hover::before {
            color: var(--accent-color);
            transform: translateX(3px);
        }

        .footer-links li {
            color: #8AA1BB;
            font-size: 14px;
        }

        .footer-bottom {
            margin-top: 38px;
            padding-top: 20px;
            border-top: 1px solid rgba(155, 205, 255, 0.1);
            text-align: center;
            color: #8097B2;
            font-size: 13px;
        }

        .footer-bottom span {
            display: block;
            margin-bottom: 4px;
        }

        .fixed-quick-bar {
            position: fixed;
            left: 50%;
            bottom: 20px;
            z-index: 1030;
            transform: translateX(-50%);
            width: min(900px, calc(100% - 32px));
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 14px 18px 14px 22px;
            background: rgba(12, 26, 48, 0.93);
            border: 1px solid rgba(155, 205, 255, 0.24);
            border-radius: 18px;
            box-shadow: 0 14px 44px rgba(0, 0, 0, 0.4);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            opacity: 0;
            visibility: hidden;
            transform: translateX(-50%) translateY(16px);
            transition: opacity .35s ease, transform .35s ease, visibility .35s ease;
        }

        .fixed-quick-bar.show {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .quick-bar-text {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #C9DBED;
            font-size: 14px;
        }

        .quick-bar-text i {
            color: var(--gold-color);
        }

        .quick-bar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .btn-quick-light {
            padding: 8px 18px;
            border-radius: 999px;
            background: linear-gradient(135deg, #3D8BFF, #28C0F5);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            white-space: nowrap;
            transition: all .25s ease;
        }

        .btn-quick-light:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 0 18px rgba(61, 139, 255, 0.6);
        }

        .quick-close {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 999px;
            border: 1px solid rgba(155, 205, 255, 0.16);
            background: transparent;
            color: var(--muted-color);
            transition: all .2s ease;
        }

        .quick-close:hover {
            color: #fff;
            background: rgba(255, 107, 107, 0.18);
            border-color: rgba(255, 107, 107, 0.4);
        }

        @media (max-width: 991.98px) {
            .faq-section {
                padding: 46px 0 36px;
            }

            .aside-help-wrap {
                position: relative;
                top: 0;
                margin-top: 42px;
            }

            .resource-horizontal-card .row.g-0 {
                display: block;
            }

            .resource-body {
                padding: 18px 8px 4px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                font-size: 15px;
                padding-bottom: 112px;
            }

            .header-top {
                padding: 12px 0 6px;
            }

            .header-cta-text {
                display: none;
            }

            .btn-header {
                padding: 9px 14px;
            }

            .logo-main {
                font-size: 18px;
            }

            .logo-sub {
                font-size: 11px;
            }

            .logo-em {
                width: 38px;
                height: 38px;
                border-radius: 12px;
            }

            .page-banner {
                padding: 44px 0 36px;
            }

            .page-title {
                font-size: 30px;
            }

            .page-lead {
                font-size: 15px;
            }

            .chapter-heading {
                gap: 12px;
            }

            .chapter-index {
                width: 50px;
                height: 50px;
                flex-basis: 50px;
                font-size: 20px;
                border-radius: 14px;
            }

            .accordion-button {
                padding: 15px 16px;
                font-size: 15px;
            }

            .accordion-body {
                padding: 6px 16px 18px 52px;
            }

            .resource-photo img {
                min-height: 150px;
            }

            .cta-steps li {
                width: 100%;
                justify-content: center;
            }

            .fixed-quick-bar {
                align-items: flex-start;
                flex-wrap: wrap;
                padding: 14px 14px 12px 16px;
                bottom: 14px;
            }

            .quick-bar-text {
                font-size: 13px;
                line-height: 1.5;
            }

            .quick-bar-actions {
                width: 100%;
                justify-content: flex-end;
            }

            .footer-title {
                margin-top: 10px;
            }
        }

        @media (max-width: 575.98px) {
            .nav-tab {
                padding: 8px 13px;
                font-size: 13px;
            }

            .page-banner {
                padding: 32px 0 30px;
            }

            .faq-section {
                padding: 40px 0 30px;
            }

            .accordion-button {
                flex-wrap: wrap;
            }

            .accordion-button span.text-content {
                flex: 1;
                min-width: 0;
            }

            .resource-body {
                padding: 14px 0 4px;
            }

            .fixed-quick-bar .quick-bar-actions a {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(61, 139, 255, 0.6);
            outline-offset: 3px;
            border-radius: 8px;
        }