/* roulang page: index */
:root {
            --bg-primary: #0B1220;
            --bg-secondary: #0F1E33;
            --bg-card: rgba(15, 35, 70, 0.5);
            --bg-card-hover: rgba(20, 42, 80, 0.55);
            --border-subtle: rgba(148, 163, 184, 0.15);
            --border-hover: rgba(34, 211, 238, 0.5);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --cyan-glow: #22D3EE;
            --cyan-bright: #38BDF8;
            --cyan-deep: #0EA5E9;
            --orange-accent: #F59E0B;
            --orange-warm: #F97316;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-num: 'DIN Alternate', 'Barlow Condensed', 'PingFang SC', sans-serif;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 32px rgba(2, 6, 18, 0.35);
            --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.55);
            --shadow-glow-hover: 0 0 28px rgba(34, 211, 238, 0.75);
            --transition-base: all 0.25s ease;
            --font-size-h1: clamp(2.2rem, 4vw, 3rem);
            --font-size-h2: clamp(1.6rem, 2.5vw, 2.1rem);
            --font-size-h3: clamp(1.1rem, 1.5vw, 1.35rem);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-weight: 400;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--cyan-glow);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: var(--cyan-bright);
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-sans);
        }

        .container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        section {
            padding: 4.5rem 0;
            position: relative;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            color: var(--cyan-glow);
            text-transform: uppercase;
            margin-bottom: 0.9rem;
            font-weight: 500;
        }

        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--cyan-glow);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
            border-radius: 2px;
        }

        .section-title {
            font-size: var(--font-size-h2);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 720px;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 18, 32, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 6px 24px rgba(2, 6, 18, 0.25);
            transition: var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(11, 18, 32, 0.92);
        }

        .brand-top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 52px;
            padding: 0 0.25rem;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(14, 165, 233, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 0.95rem;
        }

        .trend-entry {
            display: flex;
            align-items: center;
            gap: 1.1rem;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .trend-entry .hot-word {
            color: var(--orange-accent);
            font-weight: 500;
        }

        .search-trigger {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 0.95rem;
            cursor: pointer;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition-base);
        }

        .search-trigger:hover {
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.1);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 0.4rem 0 0.55rem;
        }

        .main-nav a.nav-link-item {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.35rem 0.1rem;
            position: relative;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a.nav-link-item::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--cyan-glow);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.6);
            transition: width 0.3s ease;
        }

        .main-nav a.nav-link-item:hover::after,
        .main-nav a.nav-link-item.active::after {
            width: 100%;
        }

        .main-nav a.nav-link-item:hover {
            color: var(--text-primary);
        }

        .main-nav a.nav-link-item.active {
            color: var(--cyan-glow);
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            border-radius: 8px;
            padding: 0.35rem 0.65rem;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .navbar-toggler-custom:hover {
            border-color: var(--cyan-glow);
            color: var(--cyan-glow);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(15, 30, 55, 0.95);
            backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-subtle);
            padding: 1rem 1.25rem;
            gap: 0.45rem;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a.nav-link-item {
            padding: 0.65rem 0;
            font-size: 1rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
        }

        .mobile-menu a.nav-link-item:last-child {
            border-bottom: none;
        }

        .mobile-menu a.nav-link-item.active {
            color: var(--cyan-glow);
        }

        /* Hero */
        .hero-section {
            padding: 0;
            min-height: 580px;
            display: flex;
            align-items: center;
            position: relative;
            background-image: url('/assets/images/b826f7a9fa038946.webp');
            background-size: cover;
            background-position: center;
            isolation: isolate;
            overflow: hidden;
            border-bottom: 1px solid var(--border-subtle);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(11, 18, 32, 0.95) 0%, rgba(11, 18, 32, 0.75) 45%, rgba(11, 18, 32, 0.45) 70%, rgba(11, 18, 32, 0.3) 100%);
            z-index: -1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-primary), transparent);
            z-index: 0;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            padding: 5rem 0 4rem;
            width: 100%;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--cyan-glow);
            padding: 0.4rem 1rem;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.4rem;
            letter-spacing: 0.03em;
        }

        .hero-title {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 1.2rem;
            max-width: 700px;
        }

        .hero-title .highlight {
            color: var(--cyan-glow);
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: #D8E1ED;
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 1.8rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.5rem;
        }

        .btn-glow {
            background: linear-gradient(135deg, #22D3EE, #0EA5E9);
            color: #06121F;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            padding: 0.75rem 1.5rem;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-glow);
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-glow:hover {
            background: linear-gradient(135deg, #3DDCF5, #38BDF8);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
            color: #06121F;
        }

        .btn-glow:focus-visible {
            outline: 2px solid var(--cyan-glow);
            outline-offset: 2px;
        }

        .btn-outline-glow {
            background: transparent;
            color: var(--cyan-glow);
            font-weight: 500;
            border: 1px solid var(--cyan-glow);
            border-radius: var(--radius-md);
            padding: 0.75rem 1.5rem;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-outline-glow:hover {
            background: rgba(34, 211, 238, 0.1);
            box-shadow: 0 0 16px rgba(34, 211, 238, 0.25);
            color: var(--cyan-bright);
            transform: translateY(-2px);
        }

        .btn-outline-glow:focus-visible {
            outline: 2px solid var(--cyan-glow);
            outline-offset: 2px;
        }

        .hero-trust-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }

        .hero-trust-strip span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .hero-trust-strip i {
            color: var(--cyan-glow);
        }

        .hero-data-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.8rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            align-items: stretch;
        }

        .hero-data-item {
            flex: 1 1 0;
            min-width: 110px;
            text-align: center;
            padding: 0.75rem 0.5rem;
            border-radius: var(--radius-md);
            background: rgba(2, 10, 25, 0.35);
        }

        .hero-data-num {
            font-family: var(--font-num);
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--cyan-glow);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .hero-data-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-top: 0.3rem;
        }

        /* Glass Cards */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }

        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
            transform: translateY(-4px);
        }

        .glass-card-pad {
            padding: 1.5rem;
        }

        .icon-square {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(34, 211, 238, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 1.2rem;
            margin-bottom: 1rem;
            border: 1px solid rgba(34, 211, 238, 0.2);
        }

        /* Metrics board */
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .metric-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem 1.2rem;
            text-align: center;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .metric-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
        }

        .metric-number {
            font-family: var(--font-num);
            font-size: 2.3rem;
            font-weight: 700;
            color: var(--cyan-glow);
            line-height: 1.2;
            letter-spacing: -0.01em;
        }

        .metric-unit {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-left: 2px;
        }

        .metric-name {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-top: 0.5rem;
            font-weight: 500;
        }

        /* Service matrix */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .service-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
            background: var(--bg-card-hover);
        }

        .service-card h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            line-height: 1.4;
        }

        .service-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        /* Compare table */
        .compare-wrap {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            box-shadow: var(--shadow-card);
            overflow-x: auto;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .compare-table th,
        .compare-table td {
            padding: 1rem 1.2rem;
            font-size: 0.92rem;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
        }

        .compare-table th {
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            background: rgba(2, 10, 25, 0.3);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table .col-highlight {
            color: var(--cyan-glow);
            font-weight: 600;
        }

        .compare-table .check-icon {
            color: var(--cyan-glow);
        }

        .compare-table .dim-icon {
            color: var(--orange-accent);
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 2rem;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, rgba(34, 211, 238, 0.5), rgba(34, 211, 238, 0.05));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
            padding-left: 1.5rem;
        }

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

        .timeline-dot {
            position: absolute;
            left: -2rem;
            top: 0.4rem;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--cyan-glow);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.7);
            border: 2px solid rgba(2, 10, 25, 0.8);
        }

        .timeline-year {
            font-family: var(--font-num);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--cyan-glow);
            letter-spacing: 0.02em;
        }

        .timeline-text {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-top: 0.25rem;
        }

        /* Card list */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }

        .card-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }

        .article-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
        }

        .article-card-img {
            height: 180px;
            overflow: hidden;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .article-card:hover .article-card-img img {
            transform: scale(1.04);
        }

        .article-card-body {
            padding: 1.2rem 1.3rem 1.3rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 500;
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-pill);
            padding: 0.2rem 0.7rem;
            margin-bottom: 0.7rem;
            align-self: flex-start;
        }

        .article-card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 0.5rem;
        }

        .article-card-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
        }

        .article-card-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }

        /* Brand intro */
        .brand-intro {
            background: linear-gradient(135deg, rgba(15, 35, 70, 0.7), rgba(15, 30, 55, 0.4));
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .brand-intro::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12), transparent 70%);
        }

        .brand-intro p {
            font-size: 1rem;
            color: #D8E1ED;
            line-height: 1.85;
            position: relative;
            z-index: 1;
        }

        /* Platform guarantee */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .guarantee-item {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.4rem;
            text-align: center;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
        }

        .guarantee-item:hover {
            border-color: var(--border-hover);
            transform: translateY(-3px);
        }

        .guarantee-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 1.1rem;
            margin: 0 auto 0.8rem;
        }

        .guarantee-item h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .guarantee-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Quick answer */
        .quick-answer-list {
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }

        .quick-answer-item {
            background: transparent;
            border-left: 3px solid var(--cyan-glow);
            padding: 0.8rem 1.2rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            transition: var(--transition-base);
        }

        .quick-answer-item:hover {
            background: rgba(34, 211, 238, 0.05);
        }

        .quick-answer-q {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.95rem;
            margin-bottom: 0.3rem;
        }

        .quick-answer-a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Topic cards */
        .topic-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 210px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: flex-end;
        }

        .topic-card-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .topic-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(2, 10, 25, 0.95) 15%, rgba(2, 10, 25, 0.4) 50%, rgba(2, 10, 25, 0.1) 100%);
        }

        .topic-card-content {
            position: relative;
            z-index: 1;
            padding: 1.5rem;
            width: 100%;
        }

        .topic-card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .topic-card-title .arrow {
            color: var(--cyan-glow);
            font-size: 0.9rem;
            transition: transform 0.3s ease;
        }

        .topic-card:hover .topic-card-title .arrow {
            transform: translateX(4px);
        }

        .topic-card-desc {
            font-size: 0.85rem;
            color: #94A3B8;
            line-height: 1.6;
        }

        /* FAQ */
        .accordion-custom .accordion-item {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.75rem;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 1.1rem 1.4rem;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            transition: var(--transition-base);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(34, 211, 238, 0.06);
            color: var(--cyan-glow);
        }

        .accordion-custom .accordion-button::after {
            filter: invert(70%) sepia(80%) saturate(500%) hue-rotate(150deg);
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(34, 211, 238, 0.4);
        }

        .accordion-custom .accordion-body {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
            padding: 0.5rem 1.4rem 1.3rem;
        }

        /* User voices */
        .voice-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            transition: var(--transition-base);
        }

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

        .voice-text {
            font-size: 0.92rem;
            color: #D8E1ED;
            line-height: 1.7;
            flex: 1;
        }

        .voice-author {
            font-size: 0.82rem;
            color: var(--cyan-glow);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .voice-author .badge-mini {
            font-size: 0.7rem;
            color: var(--orange-accent);
            background: rgba(245, 158, 11, 0.1);
            border: 1px solid rgba(245, 158, 11, 0.25);
            border-radius: var(--radius-pill);
            padding: 0.15rem 0.55rem;
        }

        /* Form */
        .form-glass {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-card);
        }

        .form-label-custom {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0.4rem;
            display: block;
            font-weight: 500;
        }

        .form-input-custom {
            background: rgba(2, 10, 25, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 0.7rem 1rem;
            font-size: 0.9rem;
            color: var(--text-primary);
            width: 100%;
            transition: var(--transition-base);
        }

        .form-input-custom::placeholder {
            color: var(--text-muted);
        }

        .form-input-custom:focus {
            outline: none;
            border-color: var(--cyan-glow);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
        }

        /* Bottom info section */
        .bottom-info-bar {
            background: rgba(15, 35, 70, 0.4);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .bottom-info-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: rgba(7, 13, 26, 0.9);
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 1.8rem;
            margin-top: 3rem;
        }

        .footer-link-col {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .footer-link-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
            letter-spacing: 0.02em;
        }

        .footer-link-col a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition-base);
        }

        .footer-link-col a:hover {
            color: var(--cyan-glow);
        }

        .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-subtle);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-left: 0.8rem;
            transition: var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--cyan-glow);
        }

        /* Responsive */
        @media (max-width: 991px) {
            section {
                padding: 3.5rem 0;
            }

            .metric-grid,
            .service-grid,
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero-section {
                min-height: 520px;
            }

            .hero-inner {
                padding: 3.5rem 0 3rem;
            }
        }

        @media (max-width: 767px) {
            .trend-entry {
                display: none;
            }

            .main-nav {
                display: none;
            }

            .navbar-toggler-custom {
                display: block;
            }

            .mobile-menu {
                display: flex;
            }

            section {
                padding: 2.5rem 0;
            }

            .hero-section {
                min-height: auto;
            }

            .hero-inner {
                padding: 2.5rem 0 2.5rem;
            }

            .hero-title {
                font-size: 1.9rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .hero-data-card {
                flex-direction: column;
                gap: 0.8rem;
                padding: 1.2rem;
            }

            .hero-data-item {
                min-width: auto;
            }

            .metric-grid,
            .service-grid,
            .guarantee-grid,
            .card-grid-3,
            .card-grid-2 {
                grid-template-columns: 1fr;
            }

            .brand-intro {
                padding: 1.5rem;
            }

            .compare-wrap {
                padding: 1.2rem;
            }

            .timeline {
                padding-left: 1.5rem;
            }

            .timeline-item {
                padding-left: 1rem;
            }

            .timeline-dot {
                left: -1.5rem;
            }

            .form-glass {
                padding: 1.2rem;
            }

            .bottom-info-bar {
                flex-direction: column;
                text-align: center;
                padding: 1.2rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .footer-bottom a {
                margin-left: 0;
                margin-right: 0.6rem;
            }
        }

        @media (max-width: 520px) {
            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn-glow,
            .hero-actions .btn-outline-glow {
                width: 100%;
                justify-content: center;
            }

            .hero-title {
                font-size: 1.6rem;
            }

            .hero-trust-strip {
                flex-direction: column;
                gap: 0.5rem;
            }

            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B1220;
            --bg-secondary: #0F1E33;
            --bg-card: rgba(15, 35, 70, 0.5);
            --bg-card-hover: rgba(20, 42, 80, 0.55);
            --border-subtle: rgba(148, 163, 184, 0.15);
            --border-hover: rgba(34, 211, 238, 0.5);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --cyan-glow: #22D3EE;
            --cyan-bright: #38BDF8;
            --cyan-deep: #0EA5E9;
            --orange-accent: #F59E0B;
            --orange-warm: #F97316;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-num: 'DIN Alternate', 'Barlow Condensed', 'PingFang SC', sans-serif;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 32px rgba(2, 6, 18, 0.35);
            --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.55);
            --shadow-glow-hover: 0 0 28px rgba(34, 211, 238, 0.75);
            --transition-base: all 0.25s ease;
            --font-size-h1: clamp(2.2rem, 4vw, 3rem);
            --font-size-h2: clamp(1.6rem, 2.5vw, 2.1rem);
            --font-size-h3: clamp(1.1rem, 1.5vw, 1.35rem);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-weight: 400;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a {
            color: var(--cyan-glow);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--cyan-bright);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: var(--font-sans);
        }
        .container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        section {
            padding: 4.5rem 0;
            position: relative;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            color: var(--cyan-glow);
            text-transform: uppercase;
            margin-bottom: 0.9rem;
            font-weight: 500;
        }
        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--cyan-glow);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
            border-radius: 2px;
        }
        .section-title {
            font-size: var(--font-size-h2);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 720px;
        }
        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 18, 32, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 6px 24px rgba(2, 6, 18, 0.25);
            transition: var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(11, 18, 32, 0.92);
        }
        .brand-top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 52px;
            padding: 0 0.25rem;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(14, 165, 233, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 0.95rem;
        }
        .trend-entry {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.82rem;
            color: var(--text-secondary);
        }
        .trend-entry .hot-word {
            color: var(--orange-warm);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .search-trigger {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 0.95rem;
            cursor: pointer;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition-base);
        }
        .search-trigger:hover {
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.1);
        }
        .navbar-toggler-custom {
            background: none;
            border: 1px solid var(--border-subtle);
            border-radius: 8px;
            color: var(--text-primary);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
        }
        .navbar-toggler-custom:hover {
            border-color: var(--border-hover);
            color: var(--cyan-glow);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 0.4rem 0 0.55rem;
        }
        .main-nav a.nav-link-item,
        .mobile-menu a.nav-link-item {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.35rem 0.1rem;
            position: relative;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        .main-nav a.nav-link-item::after,
        .mobile-menu a.nav-link-item::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--cyan-glow);
            border-radius: 2px;
            transition: var(--transition-base);
        }
        .main-nav a.nav-link-item:hover,
        .main-nav a.nav-link-item.active,
        .mobile-menu a.nav-link-item:hover,
        .mobile-menu a.nav-link-item.active {
            color: var(--cyan-glow);
        }
        .main-nav a.nav-link-item:hover::after,
        .main-nav a.nav-link-item.active::after,
        .mobile-menu a.nav-link-item:hover::after,
        .mobile-menu a.nav-link-item.active::after {
            width: 100%;
        }
        .mobile-menu {
            background: rgba(11, 18, 32, 0.95);
            backdrop-filter: blur(18px);
            border-top: 1px solid var(--border-subtle);
            padding: 0.75rem 1.25rem 1rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .mobile-menu a.nav-link-item {
            padding: 0.5rem 0.25rem;
        }
        /* Breadcrumb */
        .breadcrumb-section {
            padding: 1.8rem 0 2rem;
            border-bottom: 1px solid var(--border-subtle);
            background: linear-gradient(180deg, rgba(15, 30, 51, 0.6) 0%, rgba(11, 18, 32, 0.9) 100%);
        }
        .breadcrumb-inner {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.88rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-inner a {
            color: var(--text-secondary);
        }
        .breadcrumb-inner a:hover {
            color: var(--cyan-glow);
        }
        .breadcrumb-inner .separator {
            color: var(--text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb-inner .current {
            color: var(--cyan-glow);
            font-weight: 500;
        }
        .category-page-header {
            padding-top: 1.2rem;
        }
        .category-page-header h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }
        .category-page-header .cat-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 760px;
        }
        /* Buttons */
        .btn-glow-primary {
            background: linear-gradient(135deg, #22D3EE, #0EA5E9);
            color: #06121F;
            border: none;
            border-radius: 12px;
            padding: 0.75rem 1.5rem;
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: 0.01em;
        }
        .btn-glow-primary:hover {
            background: linear-gradient(135deg, #3DDDF5, #25B4F0);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
            color: #06121F;
        }
        .btn-glow-primary:focus-visible {
            outline: 2px solid var(--cyan-glow);
            outline-offset: 2px;
        }
        .btn-glow-secondary {
            background: transparent;
            border: 1px solid var(--cyan-glow);
            color: var(--cyan-glow);
            border-radius: 12px;
            padding: 0.75rem 1.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-glow-secondary:hover {
            background: rgba(34, 211, 238, 0.1);
            color: var(--cyan-bright);
            border-color: var(--cyan-bright);
        }
        .btn-glow-secondary:focus-visible {
            outline: 2px solid var(--cyan-glow);
            outline-offset: 2px;
        }
        /* Filter Tags */
        .filter-tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            align-items: center;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(15, 35, 70, 0.4);
            border: 1px solid var(--border-subtle);
            cursor: default;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--border-hover);
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.08);
        }
        .filter-tag .tag-icon {
            font-size: 0.75rem;
            color: var(--cyan-glow);
        }
        /* Glass Card */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.5rem;
            transition: var(--transition-base);
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.25);
            transform: translateY(-4px);
        }
        /* Data Cards */
        .data-card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.25rem;
        }
        .data-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.35rem 1.25rem;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .data-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.25);
            transform: translateY(-4px);
        }
        .data-card .dc-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .data-card .dc-name {
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .data-card .dc-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex-grow: 1;
        }
        .data-card .dc-meta {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .update-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.75rem;
            color: var(--text-muted);
            background: rgba(15, 35, 70, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.7rem;
        }
        .update-tag.live {
            color: var(--orange-warm);
            border-color: rgba(249, 115, 22, 0.3);
            background: rgba(249, 115, 22, 0.08);
        }
        /* Trend Section */
        .trend-block {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.75rem;
        }
        .trend-block h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }
        .trend-block p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }
        .trend-bar-group {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .trend-bar-item {
            display: flex;
            flex-direction: column;
            gap: 0.35rem;
        }
        .trend-bar-label {
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .trend-bar-label .value {
            font-family: var(--font-num);
            font-weight: 700;
            color: var(--cyan-glow);
            font-size: 0.9rem;
        }
        .progress {
            height: 10px;
            background: rgba(2, 10, 25, 0.6);
            border-radius: 999px;
            overflow: hidden;
            border: 1px solid rgba(148, 163, 184, 0.1);
        }
        .progress-bar {
            background: linear-gradient(90deg, #22D3EE, #0EA5E9);
            border-radius: 999px;
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.45);
            transition: width 0.8s ease;
        }
        .progress-bar.orange {
            background: linear-gradient(90deg, #F59E0B, #F97316);
            box-shadow: 0 0 12px rgba(249, 115, 22, 0.4);
        }
        /* Report Cards */
        .report-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .report-card:hover {
            border-color: var(--border-hover);
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.25);
            transform: translateY(-4px);
        }
        .report-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            transition: var(--transition-base);
        }
        .report-card:hover img {
            transform: scale(1.03);
        }
        .report-card .rc-body {
            padding: 1.25rem 1.25rem 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex-grow: 1;
        }
        .report-card .rc-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .report-card .rc-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex-grow: 1;
        }
        .report-card .rc-link {
            font-size: 0.85rem;
            color: var(--cyan-glow);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .report-card .rc-link:hover {
            color: var(--cyan-bright);
        }
        /* Subscribe CTA */
        .subscribe-cta {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-lg);
            box-shadow: 0 0 30px rgba(34, 211, 238, 0.12);
            padding: 2.25rem;
            position: relative;
            overflow: hidden;
        }
        .subscribe-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--cyan-glow), transparent);
        }
        .subscribe-cta h3 {
            font-size: var(--font-size-h3);
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
        }
        .subscribe-cta p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.25rem;
            max-width: 560px;
        }
        .subscribe-form {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 220px;
            background: rgba(2, 10, 25, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: 10px;
            padding: 0.7rem 1rem;
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: var(--transition-base);
        }
        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--cyan-glow);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.25);
        }
        .subscribe-form input[type="email"]::placeholder {
            color: var(--text-muted);
        }
        /* Data Coverage Section */
        .coverage-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
            gap: 1rem;
        }
        .coverage-item {
            background: rgba(15, 35, 70, 0.4);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 1.1rem 1.2rem;
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            transition: var(--transition-base);
        }
        .coverage-item:hover {
            border-color: var(--border-hover);
            background: rgba(34, 211, 238, 0.06);
        }
        .coverage-item .ci-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(34, 211, 238, 0.1);
            color: var(--cyan-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .coverage-item h4 {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.3rem;
        }
        .coverage-item p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.55;
            margin-bottom: 0;
        }
        /* Footer */
        .site-footer {
            background: #080E1A;
            border-top: 1px solid var(--border-subtle);
            padding: 3.5rem 0 2rem;
            margin-top: 1.5rem;
        }
        .site-footer .footer-link-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-link-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0.55rem;
            transition: var(--transition-base);
        }
        .site-footer .footer-link-col a:hover {
            color: var(--cyan-glow);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 2.5rem;
            padding-top: 1.25rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 0.78rem;
        }
        .footer-bottom a:hover {
            color: var(--cyan-glow);
        }
        /* Responsive */
        @media (max-width: 991.98px) {
            .data-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .coverage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trend-entry span:not(.hot-word) {
                display: none;
            }
        }
        @media (max-width: 767.98px) {
            section {
                padding: 2.5rem 0;
            }
            .category-page-header h1 {
                font-size: 1.8rem;
            }
            .data-card-grid {
                grid-template-columns: 1fr;
            }
            .coverage-grid {
                grid-template-columns: 1fr;
            }
            .subscribe-cta {
                padding: 1.5rem;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input[type="email"] {
                min-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
        }
        @media (max-width: 575.98px) {
            .brand-top-row {
                height: 48px;
            }
            .main-nav {
                gap: 0.8rem;
            }
            .filter-tag {
                padding: 0.4rem 0.8rem;
                font-size: 0.78rem;
            }
            .trend-block {
                padding: 1.25rem;
            }
            .report-card img {
                height: 140px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B1220;
            --bg-secondary: #0F1E33;
            --bg-card: rgba(15, 35, 70, 0.5);
            --bg-card-hover: rgba(20, 42, 80, 0.55);
            --border-subtle: rgba(148, 163, 184, 0.15);
            --border-hover: rgba(34, 211, 238, 0.5);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --cyan-glow: #22D3EE;
            --cyan-bright: #38BDF8;
            --cyan-deep: #0EA5E9;
            --orange-accent: #F59E0B;
            --orange-warm: #F97316;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-num: 'DIN Alternate', 'Barlow Condensed', 'PingFang SC', sans-serif;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 32px rgba(2, 6, 18, 0.35);
            --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.55);
            --shadow-glow-hover: 0 0 28px rgba(34, 211, 238, 0.75);
            --transition-base: all 0.25s ease;
            --font-size-h1: clamp(2.2rem, 4vw, 3rem);
            --font-size-h2: clamp(1.6rem, 2.5vw, 2.1rem);
            --font-size-h3: clamp(1.1rem, 1.5vw, 1.35rem);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-weight: 400;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--cyan-glow);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: var(--cyan-bright);
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-sans);
        }

        .container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        section {
            padding: 4.5rem 0;
            position: relative;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            color: var(--cyan-glow);
            text-transform: uppercase;
            margin-bottom: 0.9rem;
            font-weight: 500;
        }

        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--cyan-glow);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
            border-radius: 2px;
        }

        .section-title {
            font-size: var(--font-size-h2);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 720px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 18, 32, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 6px 24px rgba(2, 6, 18, 0.25);
            transition: var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(11, 18, 32, 0.92);
        }

        .brand-top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 52px;
            padding: 0 0.25rem;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(14, 165, 233, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .trend-entry {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            flex-wrap: nowrap;
        }

        .trend-entry .hot-word {
            color: var(--orange-accent);
            font-weight: 500;
        }

        .trend-entry .hot-word i {
            margin-right: 2px;
        }

        .search-trigger {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 0.95rem;
            cursor: pointer;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition-base);
            flex-shrink: 0;
        }

        .search-trigger:hover {
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.1);
        }

        .navbar-toggler-custom {
            background: none;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 1.1rem;
            cursor: pointer;
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
        }

        .navbar-toggler-custom:hover {
            border-color: var(--border-hover);
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.08);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 0.4rem 0 0.55rem;
        }

        .main-nav a.nav-link-item {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.35rem 0.1rem;
            position: relative;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .main-nav a.nav-link-item:hover {
            color: var(--cyan-glow);
        }

        .main-nav a.nav-link-item.active {
            color: var(--cyan-glow);
        }

        .main-nav a.nav-link-item.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--cyan-glow);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.6);
            border-radius: 2px;
        }

        .mobile-menu {
            background: rgba(11, 18, 32, 0.95);
            border-top: 1px solid var(--border-subtle);
            padding: 0.75rem 1.25rem 1rem;
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
        }

        .mobile-menu a.nav-link-item {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.6rem 0.25rem;
            transition: var(--transition-base);
            display: block;
            border-radius: 8px;
        }

        .mobile-menu a.nav-link-item:hover {
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.06);
        }

        .mobile-menu a.nav-link-item.active {
            color: var(--cyan-glow);
        }

        .category-header {
            padding: 3.5rem 0 3rem;
            background: linear-gradient(270deg, rgba(11, 18, 32, 0.92) 0%, rgba(15, 30, 51, 0.88) 45%, rgba(11, 18, 32, 0.92) 100%), url('/assets/images/a8f59ee0e54e1c12.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }

        .category-header::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 18, 32, 0.55);
            pointer-events: none;
        }

        .category-header .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            margin-bottom: 1.2rem;
        }

        .breadcrumb-item {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .breadcrumb-item a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: var(--transition-base);
        }

        .breadcrumb-item a:hover {
            color: var(--cyan-glow);
        }

        .breadcrumb-item.active {
            color: var(--cyan-glow);
        }

        .breadcrumb-item+.breadcrumb-item::before {
            content: '/';
            color: var(--text-muted);
            padding: 0 0.5rem;
        }

        .category-header h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 0.9rem;
        }

        .category-header .category-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 760px;
        }

        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: 2.2rem;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.5rem 1.15rem;
            border-radius: var(--radius-pill);
            background: rgba(15, 35, 70, 0.5);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
            user-select: none;
        }

        .filter-tag:hover {
            border-color: var(--border-hover);
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.08);
        }

        .filter-tag.active {
            border-color: var(--cyan-glow);
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.12);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.2);
        }

        .news-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
        }

        .news-card .news-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

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

        .news-card .news-body {
            padding: 1.1rem 1.25rem 1.25rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            margin-bottom: 0.65rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .news-card .news-meta .news-tag {
            display: inline-block;
            padding: 0.18rem 0.7rem;
            border-radius: var(--radius-pill);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            color: var(--cyan-glow);
            font-size: 0.72rem;
            font-weight: 500;
        }

        .news-card .news-title {
            font-size: var(--font-size-h3);
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
            line-height: 1.45;
            letter-spacing: -0.01em;
        }

        .news-card .news-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .sidebar-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.25rem 1.35rem;
            margin-bottom: 1.5rem;
        }

        .sidebar-card .sidebar-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .sidebar-card .sidebar-title i {
            color: var(--cyan-glow);
            font-size: 0.9rem;
        }

        .hot-ranking-item {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

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

        .hot-ranking-item:hover {
            padding-left: 0.3rem;
        }

        .hot-ranking-item .rank-num {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.78rem;
            font-weight: 700;
            font-family: var(--font-num);
            flex-shrink: 0;
            background: rgba(148, 163, 184, 0.1);
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
        }

        .hot-ranking-item:nth-child(1) .rank-num {
            background: rgba(245, 158, 11, 0.15);
            border-color: rgba(245, 158, 11, 0.4);
            color: var(--orange-accent);
        }

        .hot-ranking-item:nth-child(2) .rank-num {
            background: rgba(34, 211, 238, 0.12);
            border-color: rgba(34, 211, 238, 0.35);
            color: var(--cyan-glow);
        }

        .hot-ranking-item:nth-child(3) .rank-num {
            background: rgba(249, 115, 22, 0.12);
            border-color: rgba(249, 115, 22, 0.35);
            color: var(--orange-warm);
        }

        .hot-ranking-item .hot-title {
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
            flex: 1;
            line-height: 1.4;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .hot-ranking-item .hot-value {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-family: var(--font-num);
            flex-shrink: 0;
        }

        .editor-pick-item {
            display: flex;
            gap: 1rem;
            padding: 0.9rem 0;
            border-bottom: 1px solid var(--border-subtle);
            align-items: center;
            transition: var(--transition-base);
        }

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

        .editor-pick-item:hover {
            padding-left: 0.25rem;
        }

        .editor-pick-item .pick-img {
            width: 110px;
            height: 74px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }

        .editor-pick-item .pick-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .editor-pick-item .pick-info {
            flex: 1;
            min-width: 0;
        }

        .editor-pick-item .pick-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.25rem;
            line-height: 1.4;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .editor-pick-item .pick-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .editor-feature-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .editor-feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
        }

        .editor-feature-card .ef-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .editor-feature-card .ef-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .editor-feature-card:hover .ef-img img {
            transform: scale(1.05);
        }

        .editor-feature-card .ef-body {
            padding: 1.1rem 1.25rem 1.25rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .editor-feature-card .ef-tag {
            display: inline-block;
            padding: 0.2rem 0.75rem;
            border-radius: var(--radius-pill);
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.3);
            color: var(--orange-accent);
            font-size: 0.72rem;
            font-weight: 500;
            margin-bottom: 0.6rem;
            align-self: flex-start;
        }

        .editor-feature-card .ef-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .editor-feature-card .ef-excerpt {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .editor-feature-card .ef-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 0.7rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .subscribe-card {
            background: linear-gradient(135deg, rgba(15, 35, 70, 0.7), rgba(20, 42, 80, 0.5));
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(34, 211, 238, 0.3);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card), 0 0 24px rgba(34, 211, 238, 0.15);
            padding: 1.75rem 2rem;
        }

        .subscribe-card .subscribe-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .subscribe-card .subscribe-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 1.25rem;
            line-height: 1.7;
        }

        .subscribe-card form {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .subscribe-card input[type="email"] {
            flex: 1;
            min-width: 220px;
            padding: 0.7rem 1.1rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            background: rgba(2, 10, 25, 0.6);
            color: var(--text-primary);
            font-size: 0.9rem;
            outline: none;
            transition: var(--transition-base);
        }

        .subscribe-card input[type="email"]::placeholder {
            color: var(--text-muted);
        }

        .subscribe-card input[type="email"]:focus {
            border-color: var(--cyan-glow);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
        }

        .btn-glow {
            background: linear-gradient(135deg, #22D3EE, #0EA5E9);
            color: #06121F;
            border: none;
            border-radius: var(--radius-sm);
            padding: 0.7rem 1.5rem;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .btn-glow:hover {
            background: linear-gradient(135deg, #3be0f5, #22c3ee);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
            color: #06121F;
        }

        .btn-glow:focus-visible {
            outline: 2px solid var(--cyan-glow);
            outline-offset: 2px;
        }

        .btn-outline-glow {
            background: transparent;
            border: 1px solid var(--cyan-glow);
            color: var(--cyan-glow);
            border-radius: var(--radius-sm);
            padding: 0.7rem 1.5rem;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-outline-glow:hover {
            background: rgba(34, 211, 238, 0.1);
            color: var(--cyan-bright);
            border-color: var(--cyan-bright);
        }

        .btn-outline-glow:focus-visible {
            outline: 2px solid var(--cyan-glow);
            outline-offset: 2px;
        }

        .site-footer {
            background: #080D18;
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 1.5rem;
            margin-top: 1rem;
        }

        .site-footer .footer-brand-text {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .footer-link-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.9rem;
            letter-spacing: 0.02em;
        }

        .footer-link-col a {
            display: block;
            font-size: 0.83rem;
            color: var(--text-muted);
            padding: 0.3rem 0;
            transition: var(--transition-base);
        }

        .footer-link-col a:hover {
            color: var(--cyan-glow);
            padding-left: 0.2rem;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 2.2rem;
            padding-top: 1.3rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
            justify-content: space-between;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            margin-left: 0.9rem;
        }

        .footer-bottom a:hover {
            color: var(--cyan-glow);
        }

        @media (max-width: 991.98px) {
            section {
                padding: 3.5rem 0;
            }

            .category-header {
                padding: 2.8rem 0 2.2rem;
            }

            .news-card .news-img {
                height: 160px;
            }

            .editor-feature-card .ef-img {
                height: 170px;
            }

            .editor-pick-item .pick-img {
                width: 90px;
                height: 62px;
            }

            .subscribe-card {
                padding: 1.4rem 1.5rem;
            }
        }

        @media (max-width: 767.98px) {
            section {
                padding: 2.5rem 0;
            }

            .category-header {
                padding: 2.2rem 0 1.8rem;
            }

            .category-header h1 {
                font-size: 1.7rem;
            }

            .news-card .news-img {
                height: 160px;
            }

            .editor-pick-item {
                flex-direction: column;
                align-items: flex-start;
            }

            .editor-pick-item .pick-img {
                width: 100%;
                height: 140px;
            }

            .subscribe-card form {
                flex-direction: column;
            }

            .subscribe-card input[type="email"] {
                min-width: auto;
                width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }

            .footer-bottom a {
                margin-left: 0;
                margin-right: 0.9rem;
            }

            .filter-tags {
                gap: 0.45rem;
            }

            .filter-tag {
                padding: 0.4rem 0.9rem;
                font-size: 0.78rem;
            }
        }

        @media (max-width: 575.98px) {
            .news-card .news-img {
                height: 150px;
            }

            .editor-feature-card .ef-img {
                height: 150px;
            }

            .editor-pick-item .pick-img {
                height: 120px;
            }

            .subscribe-card {
                padding: 1.2rem 1.1rem;
            }

            .btn-glow,
            .btn-outline-glow {
                padding: 0.6rem 1.1rem;
                font-size: 0.82rem;
            }

            .main-nav {
                gap: 0.9rem;
            }

            .main-nav a.nav-link-item {
                font-size: 0.82rem;
            }

            .brand-top-row {
                height: 46px;
            }

            .trend-entry span {
                display: none;
            }

            .trend-entry .hot-word {
                display: inline;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B1220;
            --bg-secondary: #0F1E33;
            --bg-card: rgba(15, 35, 70, 0.5);
            --bg-card-hover: rgba(20, 42, 80, 0.55);
            --border-subtle: rgba(148, 163, 184, 0.15);
            --border-hover: rgba(34, 211, 238, 0.5);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --cyan-glow: #22D3EE;
            --cyan-bright: #38BDF8;
            --cyan-deep: #0EA5E9;
            --orange-accent: #F59E0B;
            --orange-warm: #F97316;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-num: 'DIN Alternate', 'Barlow Condensed', 'PingFang SC', sans-serif;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 32px rgba(2, 6, 18, 0.35);
            --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.55);
            --shadow-glow-hover: 0 0 28px rgba(34, 211, 238, 0.75);
            --transition-base: all 0.25s ease;
            --font-size-h1: clamp(2.2rem, 4vw, 3rem);
            --font-size-h2: clamp(1.6rem, 2.5vw, 2.1rem);
            --font-size-h3: clamp(1.1rem, 1.5vw, 1.35rem);
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-weight: 400;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--cyan-glow);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: var(--cyan-bright);
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-sans);
        }

        .container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        section {
            padding: 4.5rem 0;
            position: relative;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            color: var(--cyan-glow);
            text-transform: uppercase;
            margin-bottom: 0.9rem;
            font-weight: 500;
        }

        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--cyan-glow);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
            border-radius: 2px;
        }

        .section-title {
            font-size: var(--font-size-h2);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 720px;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 18, 32, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 6px 24px rgba(2, 6, 18, 0.25);
            transition: var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(11, 18, 32, 0.92);
        }

        .brand-top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 52px;
            padding: 0 0.25rem;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(14, 165, 233, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        .trend-entry {
            display: flex;
            align-items: center;
            gap: 0.9rem;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .trend-entry .hot-word {
            color: var(--orange-accent);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .search-trigger {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 0.95rem;
            cursor: pointer;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition-base);
            flex-shrink: 0;
        }

        .search-trigger:hover {
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.1);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 0.4rem 0 0.55rem;
        }

        .main-nav a.nav-link-item {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.35rem 0.1rem;
            position: relative;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }

        .main-nav a.nav-link-item::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--cyan-glow);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .main-nav a.nav-link-item:hover {
            color: var(--text-primary);
        }

        .main-nav a.nav-link-item:hover::after {
            width: 100%;
        }

        .main-nav a.nav-link-item.active {
            color: var(--cyan-glow);
        }

        .main-nav a.nav-link-item.active::after {
            width: 100%;
        }

        .navbar-toggler-custom {
            background: none;
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            font-size: 1.1rem;
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition-base);
        }

        .navbar-toggler-custom:hover {
            border-color: var(--border-hover);
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.08);
        }

        .mobile-menu {
            background: rgba(11, 18, 32, 0.94);
            border-top: 1px solid var(--border-subtle);
            padding: 0.75rem 1.25rem 1.25rem;
        }

        .mobile-menu .nav-link-item {
            display: block;
            padding: 0.7rem 0;
            font-size: 0.95rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            transition: var(--transition-base);
        }

        .mobile-menu .nav-link-item:last-child {
            border-bottom: none;
        }

        .mobile-menu .nav-link-item:hover,
        .mobile-menu .nav-link-item.active {
            color: var(--cyan-glow);
            padding-left: 0.5rem;
        }

        /* Breadcrumb */
        .breadcrumb-area {
            padding: 2rem 0 0.5rem;
            background: rgba(11, 18, 32, 0.6);
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--text-secondary);
        }

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

        .breadcrumb-nav .sep {
            color: var(--text-muted);
            font-size: 0.7rem;
        }

        .breadcrumb-nav .current {
            color: var(--cyan-glow);
            font-weight: 500;
        }

        /* Category header */
        .category-head {
            padding: 3rem 0 2rem;
            background: linear-gradient(180deg, rgba(15, 30, 51, 0.6) 0%, rgba(11, 18, 32, 0.9) 100%);
            position: relative;
            overflow: hidden;
        }

        .category-head::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background: radial-gradient(ellipse at top right, rgba(34, 211, 238, 0.08), transparent 70%);
            pointer-events: none;
        }

        .category-head .head-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-pill);
            padding: 0.3rem 0.9rem;
            margin-bottom: 1rem;
            font-weight: 500;
        }

        .category-head h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .category-head .head-desc {
            font-size: 1.02rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 780px;
        }

        /* Filter tags */
        .filter-tags {
            padding: 1.75rem 0 0.5rem;
            background: transparent;
        }

        .filter-tags .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            align-items: center;
        }

        .filter-tags .tag-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 0.3rem;
        }

        .filter-tag-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(15, 35, 70, 0.4);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-pill);
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .filter-tag-btn:hover {
            color: var(--cyan-glow);
            border-color: var(--border-hover);
            background: rgba(34, 211, 238, 0.08);
            box-shadow: 0 0 14px rgba(34, 211, 238, 0.15);
        }

        .filter-tag-btn.active-tag {
            color: var(--cyan-glow);
            border-color: rgba(34, 211, 238, 0.5);
            background: rgba(34, 211, 238, 0.12);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.2);
        }

        /* Topic cards list */
        .topic-list-section {
            padding-top: 1.5rem;
        }

        .topic-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
            background: var(--bg-card-hover);
        }

        .topic-card .topic-image-wrap {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .topic-card .topic-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .topic-card:hover .topic-image-wrap img {
            transform: scale(1.05);
        }

        .topic-card .topic-image-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 18, 32, 0.35) 0%, rgba(11, 18, 32, 0.1) 35%, rgba(11, 18, 32, 0.85) 100%);
            pointer-events: none;
        }

        .topic-card .topic-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--cyan-glow);
            background: rgba(11, 18, 32, 0.75);
            border: 1px solid rgba(34, 211, 238, 0.4);
            border-radius: var(--radius-pill);
            padding: 0.25rem 0.8rem;
            letter-spacing: 0.02em;
        }

        .topic-card .topic-title-overlay {
            position: absolute;
            bottom: 14px;
            left: 16px;
            right: 16px;
            z-index: 2;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.35;
            letter-spacing: -0.01em;
            text-shadow: 0 2px 8px rgba(2, 6, 18, 0.5);
        }

        .topic-card .topic-title-overlay span {
            display: inline;
            background-image: linear-gradient(transparent 72%, rgba(34, 211, 238, 0.45) 72%, rgba(34, 211, 238, 0.45) 88%, transparent 88%);
            padding-bottom: 0.1rem;
        }

        .topic-card .topic-card-body {
            padding: 1.1rem 1.25rem 1.3rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .topic-card .topic-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0.9rem;
            flex: 1;
        }

        .topic-card .topic-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            padding-top: 0.75rem;
            border-top: 1px solid rgba(148, 163, 184, 0.1);
        }

        .topic-card .topic-meta i {
            color: var(--cyan-glow);
            margin-right: 0.2rem;
        }

        /* Series steps */
        .series-section {
            background: rgba(15, 30, 51, 0.35);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .series-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .series-step {
            flex: 1 1 220px;
            min-width: 200px;
            position: relative;
            padding: 1.5rem 1.5rem 1.5rem 2.4rem;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: var(--transition-base);
        }

        .series-step:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            transform: translateY(-2px);
        }

        .series-step .step-number {
            position: absolute;
            left: 0.9rem;
            top: 1.4rem;
            font-family: var(--font-num);
            font-size: 2rem;
            font-weight: 700;
            color: rgba(34, 211, 238, 0.35);
            line-height: 1;
        }

        .series-step h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }

        .series-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0.5rem;
        }

        .series-step .series-link {
            font-size: 0.8rem;
            color: var(--cyan-glow);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .series-step .series-link:hover {
            color: var(--cyan-bright);
            gap: 0.5rem;
        }

        /* Editor picks */
        .editor-picks-section {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }

        .editor-pick-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            height: 100%;
        }

        .editor-pick-card:hover {
            border-color: var(--border-hover);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.22);
            transform: translateY(-3px);
        }

        .editor-pick-card .pick-image {
            height: 180px;
            overflow: hidden;
        }

        .editor-pick-card .pick-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .editor-pick-card:hover .pick-image img {
            transform: scale(1.04);
        }

        .editor-pick-card .pick-body {
            padding: 1.25rem 1.4rem 1.4rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .editor-pick-card .pick-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--orange-accent);
            margin-bottom: 0.6rem;
        }

        .editor-pick-card .pick-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 0.6rem;
            letter-spacing: -0.01em;
        }

        .editor-pick-card .pick-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 0.9rem;
        }

        .editor-pick-card .pick-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* Subscribe form */
        .subscribe-section {
            padding-top: 3.5rem;
            padding-bottom: 5rem;
        }

        .subscribe-card {
            background: rgba(15, 35, 70, 0.45);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(34, 211, 238, 0.2);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .subscribe-card::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.08), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-card .subscribe-info {
            flex: 2 1 320px;
            position: relative;
            z-index: 1;
        }

        .subscribe-card .subscribe-info h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
            letter-spacing: -0.01em;
        }

        .subscribe-card .subscribe-info p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 500px;
            margin-bottom: 0;
        }

        .subscribe-card .subscribe-form {
            flex: 1 1 260px;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            position: relative;
            z-index: 1;
        }

        .subscribe-card .subscribe-form input[type="email"] {
            width: 100%;
            padding: 0.75rem 1rem;
            font-size: 0.92rem;
            color: var(--text-primary);
            background: rgba(2, 10, 25, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            outline: none;
            transition: var(--transition-base);
        }

        .subscribe-card .subscribe-form input[type="email"]:focus {
            border-color: var(--border-hover);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.2);
        }

        .subscribe-card .subscribe-form input[type="email"]::placeholder {
            color: var(--text-muted);
        }

        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.5rem;
            font-size: 0.92rem;
            font-weight: 600;
            color: #06121F;
            background: linear-gradient(135deg, var(--cyan-glow) 0%, var(--cyan-deep) 100%);
            border: none;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-glow);
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .btn-glow:hover {
            background: linear-gradient(135deg, #4DDDF5 0%, #1CB8F8 100%);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
            color: #06121F;
        }

        .btn-glow:focus-visible {
            outline: 2px solid var(--cyan-glow);
            outline-offset: 2px;
        }

        .btn-outline-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.4rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--cyan-glow);
            background: transparent;
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .btn-outline-glow:hover {
            background: rgba(34, 211, 238, 0.1);
            box-shadow: 0 0 14px rgba(34, 211, 238, 0.2);
            color: var(--cyan-bright);
        }

        .btn-outline-glow:focus-visible {
            outline: 2px solid var(--cyan-glow);
            outline-offset: 2px;
        }

        /* Footer */
        .site-footer {
            background: rgba(6, 12, 24, 0.9);
            border-top: 1px solid var(--border-subtle);
            padding: 3.5rem 0 1.5rem;
            margin-top: 2rem;
        }

        .footer-link-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .footer-link-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 0.3rem 0;
            transition: var(--transition-base);
        }

        .footer-link-col a:hover {
            color: var(--cyan-glow);
            padding-left: 0.3rem;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(148, 163, 184, 0.08);
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            margin-left: 0.7rem;
            transition: var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--cyan-glow);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            section {
                padding: 3rem 0;
            }

            .category-head {
                padding: 2rem 0 1.5rem;
            }

            .topic-card .topic-image-wrap {
                height: 190px;
            }

            .series-steps {
                gap: 1rem;
            }

            .series-step {
                flex: 1 1 45%;
                min-width: 160px;
                padding: 1.2rem 1.2rem 1.2rem 2rem;
            }
        }

        @media (max-width: 767.98px) {
            .category-head h1 {
                font-size: 1.8rem;
            }

            .category-head .head-desc {
                font-size: 0.95rem;
            }

            .filter-tags .tag-group {
                gap: 0.5rem;
            }

            .filter-tag-btn {
                padding: 0.4rem 0.85rem;
                font-size: 0.8rem;
            }

            .topic-card .topic-image-wrap {
                height: 170px;
            }

            .topic-card .topic-title-overlay {
                font-size: 1.02rem;
                bottom: 10px;
                left: 12px;
                right: 12px;
            }

            .series-steps {
                flex-direction: column;
                gap: 0.8rem;
            }

            .series-step {
                flex: 1 1 auto;
                min-width: 100%;
                padding-left: 2.2rem;
            }

            .editor-pick-card .pick-image {
                height: 150px;
            }

            .subscribe-card {
                padding: 1.8rem 1.3rem;
                gap: 1.5rem;
            }

            .subscribe-card .subscribe-info h3 {
                font-size: 1.15rem;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
                text-align: left;
            }
        }

        @media (max-width: 575.98px) {
            section {
                padding: 2.2rem 0;
            }

            .category-head {
                padding: 1.5rem 0 1.2rem;
            }

            .category-head h1 {
                font-size: 1.5rem;
            }

            .breadcrumb-area {
                padding: 1.2rem 0 0.3rem;
            }

            .filter-tags {
                padding: 1rem 0 0;
            }

            .filter-tag-btn {
                font-size: 0.75rem;
                padding: 0.35rem 0.7rem;
            }

            .topic-card .topic-image-wrap {
                height: 150px;
            }

            .topic-card .topic-title-overlay {
                font-size: 0.95rem;
            }

            .topic-card .topic-card-body {
                padding: 0.9rem 1rem 1rem;
            }

            .topic-card .topic-excerpt {
                font-size: 0.84rem;
            }

            .btn-glow,
            .btn-outline-glow {
                width: 100%;
                padding: 0.7rem 1rem;
            }

            .subscribe-card .subscribe-form {
                flex: 1 1 100%;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0B1220;
            --bg-secondary: #0F1E33;
            --bg-card: rgba(15, 35, 70, 0.5);
            --bg-card-hover: rgba(20, 42, 80, 0.55);
            --border-subtle: rgba(148, 163, 184, 0.15);
            --border-hover: rgba(34, 211, 238, 0.5);
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --cyan-glow: #22D3EE;
            --cyan-bright: #38BDF8;
            --cyan-deep: #0EA5E9;
            --orange-accent: #F59E0B;
            --orange-warm: #F97316;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --font-num: 'DIN Alternate', 'Barlow Condensed', 'PingFang SC', sans-serif;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 32px rgba(2, 6, 18, 0.35);
            --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.55);
            --shadow-glow-hover: 0 0 28px rgba(34, 211, 238, 0.75);
            --transition-base: all 0.25s ease;
            --font-size-h1: clamp(2.2rem, 4vw, 3rem);
            --font-size-h2: clamp(1.6rem, 2.5vw, 2.1rem);
            --font-size-h3: clamp(1.1rem, 1.5vw, 1.35rem);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-weight: 400;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a {
            color: var(--cyan-glow);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--cyan-bright);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: var(--font-sans);
        }
        .container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        section {
            padding: 4.5rem 0;
            position: relative;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            color: var(--cyan-glow);
            text-transform: uppercase;
            margin-bottom: 0.9rem;
            font-weight: 500;
        }
        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--cyan-glow);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
            border-radius: 2px;
        }
        .section-title {
            font-size: var(--font-size-h2);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 720px;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 18, 32, 0.75);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 6px 24px rgba(2, 6, 18, 0.25);
            transition: var(--transition-base);
        }
        .site-header.scrolled {
            background: rgba(11, 18, 32, 0.92);
        }
        .brand-top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 52px;
            padding: 0 0.25rem;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(14, 165, 233, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 0.95rem;
        }
        .trend-entry {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .trend-entry .hot-word {
            color: var(--orange-accent);
            font-weight: 600;
            font-size: 0.78rem;
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }
        .search-trigger {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 0.95rem;
            cursor: pointer;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition-base);
        }
        .search-trigger:hover {
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.1);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 0.4rem 0 0.55rem;
        }
        .main-nav a.nav-link-item {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.35rem 0.1rem;
            position: relative;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
        }
        .main-nav a.nav-link-item:hover,
        .main-nav a.nav-link-item.active {
            color: var(--cyan-glow);
        }
        .main-nav a.nav-link-item.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--cyan-glow);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(34, 211, 238, 0.6);
        }
        .navbar-toggler-custom {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.2rem;
            cursor: pointer;
            padding: 0.35rem 0.5rem;
            border-radius: 8px;
            transition: var(--transition-base);
        }
        .navbar-toggler-custom:hover {
            background: rgba(34, 211, 238, 0.1);
            color: var(--cyan-glow);
        }
        .mobile-menu {
            background: rgba(11, 18, 32, 0.95);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-top: 1px solid var(--border-subtle);
            padding: 0.5rem 1rem 1rem;
        }
        .mobile-menu a.nav-link-item {
            display: block;
            padding: 0.6rem 0.25rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }
        .mobile-menu a.nav-link-item:hover,
        .mobile-menu a.nav-link-item.active {
            color: var(--cyan-glow);
        }

        /* Breadcrumb */
        .breadcrumb-compact {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            flex-wrap: wrap;
        }
        .breadcrumb-compact a {
            color: var(--text-secondary);
        }
        .breadcrumb-compact a:hover {
            color: var(--cyan-glow);
        }
        .breadcrumb-compact .sep {
            color: var(--text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb-compact .current {
            color: var(--cyan-glow);
            font-weight: 500;
        }

        /* Category Header */
        .category-header {
            padding: 3rem 0 2rem;
            border-bottom: 1px solid var(--border-subtle);
        }
        .category-header h1 {
            font-size: var(--font-size-h1);
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
        }
        .category-header .cat-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 800px;
            line-height: 1.75;
            margin-bottom: 1.5rem;
        }

        /* Tag Filter */
        .tag-filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            padding: 1.5rem 0 1rem;
        }
        .tag-filter-btn {
            background: rgba(15, 35, 70, 0.35);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            padding: 0.4rem 1rem;
            border-radius: var(--radius-pill);
            font-size: 0.82rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .tag-filter-btn:hover {
            border-color: var(--border-hover);
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.08);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.2);
        }
        .tag-filter-btn.active {
            background: rgba(34, 211, 238, 0.15);
            border-color: var(--border-hover);
            color: var(--cyan-glow);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.25);
        }

        /* Card Base */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
            transform: translateY(-4px);
        }

        /* Community Post Card */
        .post-card {
            display: flex;
            flex-direction: column;
            padding: 1.25rem;
            gap: 0.8rem;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            height: 100%;
        }
        .post-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-hover);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 18px rgba(34, 211, 238, 0.25);
            transform: translateY(-4px);
        }
        .post-header {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .post-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(14, 165, 233, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 0.85rem;
            font-weight: 600;
            flex-shrink: 0;
        }
        .post-user-meta {
            flex: 1;
            min-width: 0;
        }
        .post-username {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.3;
        }
        .post-time {
            font-size: 0.72rem;
            color: var(--text-muted);
            line-height: 1.3;
            margin-top: 1px;
        }
        .post-badge-hot {
            background: rgba(249, 115, 22, 0.18);
            border: 1px solid rgba(249, 115, 22, 0.4);
            color: var(--orange-warm);
            font-size: 0.68rem;
            font-weight: 600;
            padding: 0.15rem 0.55rem;
            border-radius: var(--radius-pill);
            flex-shrink: 0;
            letter-spacing: 0.02em;
        }
        .post-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }
        .post-summary {
            font-size: 0.86rem;
            color: var(--text-secondary);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0;
        }
        .post-footer-stats {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            padding-top: 0.5rem;
            border-top: 1px solid var(--border-subtle);
        }
        .post-stat-item {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .post-stat-item i {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        /* Hot Discussion Sidebar */
        .hot-list-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.25rem;
            transition: var(--transition-base);
        }
        .hot-list-card:hover {
            border-color: var(--border-hover);
        }
        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
            cursor: pointer;
        }
        .hot-list-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .hot-list-item:hover .hot-title-text {
            color: var(--cyan-glow);
        }
        .hot-rank-number {
            font-family: var(--font-num);
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-muted);
            width: 22px;
            text-align: center;
            flex-shrink: 0;
        }
        .hot-rank-number.top1 {
            color: var(--orange-warm);
        }
        .hot-rank-number.top2 {
            color: var(--cyan-glow);
        }
        .hot-rank-number.top3 {
            color: var(--cyan-bright);
        }
        .hot-title-text {
            flex: 1;
            font-size: 0.83rem;
            color: var(--text-secondary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .hot-heat-value {
            font-size: 0.72rem;
            color: var(--text-muted);
            flex-shrink: 0;
            font-family: var(--font-num);
        }

        /* Active Users */
        .user-avatar-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 1.5rem 1.25rem;
            text-align: center;
            transition: var(--transition-base);
            height: 100%;
        }
        .user-avatar-card:hover {
            border-color: var(--border-hover);
            box-shadow: 0 8px 32px rgba(2, 6, 18, 0.35), 0 0 16px rgba(34, 211, 238, 0.2);
            transform: translateY(-3px);
        }
        .user-avatar-large {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(14, 165, 233, 0.1));
            border: 2px solid rgba(34, 211, 238, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan-glow);
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 0.6rem;
        }
        .user-avatar-large.orange {
            border-color: rgba(249, 115, 22, 0.4);
            color: var(--orange-warm);
            background: linear-gradient(135deg, rgba(249, 115, 22, 0.2), rgba(249, 115, 22, 0.08));
        }
        .user-avatar-large.cyan-bright {
            border-color: rgba(56, 189, 248, 0.4);
            color: var(--cyan-bright);
            background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(56, 189, 248, 0.08));
        }
        .user-nickname {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.2rem;
        }
        .user-badge {
            font-size: 0.68rem;
            color: var(--cyan-glow);
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.3);
            padding: 0.15rem 0.55rem;
            border-radius: var(--radius-pill);
            display: inline-block;
        }
        .user-badge.warm {
            color: var(--orange-warm);
            background: rgba(249, 115, 22, 0.12);
            border-color: rgba(249, 115, 22, 0.3);
        }

        /* CTA Card */
        .cta-community-card {
            background: linear-gradient(135deg, rgba(15, 35, 70, 0.7), rgba(20, 42, 80, 0.5));
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-lg);
            box-shadow: 0 8px 40px rgba(2, 6, 18, 0.4), 0 0 24px rgba(34, 211, 238, 0.15);
            padding: 2.5rem;
            text-align: center;
        }
        .btn-glow-primary {
            background: linear-gradient(135deg, #22D3EE, #0EA5E9);
            color: #06121F;
            border: none;
            border-radius: var(--radius-md);
            padding: 0.75rem 1.5rem;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-glow);
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-glow-primary:hover {
            background: linear-gradient(135deg, #3DE0F8, #1CB8F5);
            box-shadow: var(--shadow-glow-hover);
            transform: translateY(-2px);
            color: #06121F;
        }
        .btn-glow-secondary {
            background: transparent;
            color: var(--cyan-glow);
            border: 1px solid var(--cyan-glow);
            border-radius: var(--radius-md);
            padding: 0.7rem 1.4rem;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-glow-secondary:hover {
            background: rgba(34, 211, 238, 0.1);
            box-shadow: 0 0 16px rgba(34, 211, 238, 0.3);
            transform: translateY(-2px);
            color: var(--cyan-glow);
        }

        /* Footer */
        .site-footer {
            background: rgba(8, 14, 26, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-subtle);
            padding: 3.5rem 0 2rem;
            margin-top: 2rem;
        }
        .footer-link-col h4 {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 0.8rem;
            letter-spacing: 0.03em;
        }
        .footer-link-col a {
            display: block;
            font-size: 0.82rem;
            color: var(--text-muted);
            padding: 0.25rem 0;
            transition: var(--transition-base);
        }
        .footer-link-col a:hover {
            color: var(--cyan-glow);
            padding-left: 0.25rem;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 2rem;
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            margin: 0 0.5rem;
        }
        .footer-bottom a:hover {
            color: var(--cyan-glow);
        }

        /* Form */
        .form-control-dark {
            background: rgba(2, 10, 25, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            padding: 0.7rem 1rem;
            font-size: 0.9rem;
            transition: var(--transition-base);
            width: 100%;
        }
        .form-control-dark::placeholder {
            color: var(--text-muted);
        }
        .form-control-dark:focus {
            border-color: var(--cyan-glow);
            outline: none;
            box-shadow: 0 0 0 2px rgba(34, 211, 238, 0.2);
            background: rgba(2, 10, 25, 0.8);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            section {
                padding: 3.5rem 0;
            }
            .category-header {
                padding: 2.5rem 0 1.5rem;
            }
            .cta-community-card {
                padding: 2rem 1.5rem;
            }
            .trend-entry span:not(.hot-word) {
                display: none;
            }
        }
        @media (max-width: 575.98px) {
            section {
                padding: 2.5rem 0;
            }
            .category-header h1 {
                font-size: 1.8rem;
            }
            .tag-filter-bar {
                gap: 0.4rem;
            }
            .tag-filter-btn {
                padding: 0.3rem 0.7rem;
                font-size: 0.75rem;
            }
            .post-card {
                padding: 1rem;
            }
            .cta-community-card {
                padding: 1.5rem 1rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
            .main-nav {
                gap: 0.8rem;
            }
            .main-nav a.nav-link-item {
                font-size: 0.82rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}