/* roulang page: index */
:root {
            --brand: #2563EB;
            --brand-dark: #1E40AF;
            --brand-light: #3B82F6;
            --cyan: #06B6D4;
            --cyan-dark: #0E7490;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --ink: #1E293B;
            --muted: #64748B;
            --soft: #94A3B8;
            --border: #E2E8F0;
            --border-light: #EEF2F7;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-card: 0 1px 3px rgba(0,0,0,0.05), 0 4px 16px rgba(37,99,235,0.06);
            --shadow-card-hover: 0 2px 6px rgba(0,0,0,0.07), 0 12px 32px rgba(37,99,235,0.10);
            --shadow-hero: 0 8px 30px rgba(37,99,235,0.12);
            --transition: 300ms ease-out;
            --header-main-height: 48px;
            --header-channel-height: 40px;
            --header-shrunk-height: 56px;
            --hero-bg: #F8FAFC;
        }

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

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

        body {
            font-family: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Inter', sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--ink);
            background-color: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), transform var(--transition);
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
        }

        section {
            padding: 64px 0;
            position: relative;
        }

        @media (max-width: 1024px) {
            section {
                padding: 48px 0;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 40px 0;
            }
        }

        @media (max-width: 520px) {
            section {
                padding: 32px 0;
            }
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-tint {
            background-color: #F1F5F9;
        }

        .section-cyanish {
            background: linear-gradient(180deg, #F8FAFC 0%, #F0F7FA 100%);
        }

        .brand-badge {
            display: inline-block;
            background-color: #EFF6FF;
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .section-tag {
            display: inline-block;
            color: var(--brand);
            font-size: 15px;
            font-weight: 650;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            text-transform: none;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.7;
            color: var(--muted);
            max-width: 780px;
            margin-bottom: 32px;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 25px;
            }
            .section-desc {
                font-size: 15px;
                margin-bottom: 24px;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 21px;
            }
            .section-desc {
                font-size: 14px;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 650;
            font-size: 16px;
            line-height: 1.2;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            user-select: none;
        }

        .btn-primary {
            background-color: var(--brand);
            color: #FFFFFF;
            box-shadow: 0 2px 6px rgba(37,99,235,0.25);
        }
        .btn-primary:hover {
            background-color: var(--brand-dark);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: 0 6px 18px rgba(37,99,235,0.32);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-secondary:hover {
            background-color: #F1F5F9;
            color: var(--brand-dark);
            border-color: var(--brand-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37,99,235,0.10);
        }

        .btn-ghost {
            background-color: transparent;
            color: var(--brand);
            border: 1px solid #E2E8F0;
        }
        .btn-ghost:hover {
            background-color: #F8FAFC;
            border-color: var(--brand);
            color: var(--brand-dark);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        .btn-lg {
            padding: 15px 32px;
            font-size: 17px;
            border-radius: 12px;
        }

        .card-base {
            background-color: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(37,99,235,0.35);
        }

        .tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            line-height: 1.4;
        }
        .tag-blue {
            background-color: #EFF6FF;
            color: var(--brand);
        }
        .tag-cyan {
            background-color: #ECFEFF;
            color: #0E7490;
        }
        .tag-amber {
            background-color: #FFFBEB;
            color: #B45309;
        }
        .tag-slate {
            background-color: #F1F5F9;
            color: #475569;
        }

        .divider {
            height: 1px;
            background: linear-gradient(to right, transparent, var(--border), transparent);
            margin: 24px 0;
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: all var(--transition);
            background-color: #FFFFFF;
            box-shadow: 0 1px 0 rgba(0,0,0,0.04);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-main-height);
            padding: 0;
            transition: all var(--transition);
            overflow: hidden;
        }

        .header-channel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-channel-height);
            border-top: 1px solid #F1F5F9;
            transition: all var(--transition);
            overflow: hidden;
        }

        .site-header.shrunk .header-brand-row {
            height: 0;
            opacity: 0;
            padding: 0;
            border: none;
        }
        .site-header.shrunk .header-channel-row {
            height: 0;
            opacity: 0;
            padding: 0;
            border: none;
        }
        .site-header.shrunk .header-shrunk-row {
            display: flex;
            height: var(--header-shrunk-height);
            opacity: 1;
        }

        .header-shrunk-row {
            display: none;
            align-items: center;
            justify-content: space-between;
            height: var(--header-shrunk-height);
            opacity: 0;
            transition: all var(--transition);
        }

        .logo-text {
            font-weight: 800;
            font-size: 20px;
            letter-spacing: -0.3px;
            color: var(--ink);
            white-space: nowrap;
        }
        .logo-text .accent {
            color: var(--brand);
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--brand) 0%, var(--cyan) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-weight: 800;
            font-size: 15px;
            flex-shrink: 0;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 15px;
            font-weight: 550;
            color: #475569;
            border-radius: 7px;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--brand);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--brand);
            background-color: #EFF6FF;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 55%;
        }

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

        .search-toggle {
            background: #F1F5F9;
            border: none;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--muted);
            cursor: pointer;
            transition: all var(--transition);
        }
        .search-toggle:hover {
            background-color: var(--brand);
            color: #FFFFFF;
        }

        .hamburger {
            display: none;
            background: #F1F5F9;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            color: var(--ink);
            font-size: 20px;
            cursor: pointer;
            transition: all var(--transition);
            align-items: center;
            justify-content: center;
        }
        .hamburger:hover {
            background-color: var(--brand);
            color: #FFFFFF;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-main-height);
            left: 0;
            right: 0;
            background: #FFFFFF;
            z-index: 99;
            padding: 12px 16px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.10);
            flex-direction: column;
            gap: 4px;
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition);
        }
        .mobile-menu.open {
            display: flex;
            max-height: 480px;
            padding-bottom: 20px;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 16px;
        }

        @media (max-width: 1024px) {
            .nav-list.desktop-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-channel-row {
                display: none;
            }
        }
        @media (min-width: 1025px) {
            .mobile-menu {
                display: none !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        @media (max-width: 520px) {
            .header-brand-row {
                height: 52px;
            }
            .logo-text {
                font-size: 17px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 13px;
            }
        }

        /* Hero */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background-color: var(--hero-bg);
            position: relative;
            overflow: hidden;
            min-height: 78vh;
            display: flex;
            align-items: center;
        }
        @media (max-width: 1024px) {
            .hero {
                padding-top: 130px;
                padding-bottom: 60px;
                min-height: auto;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding-top: 110px;
                padding-bottom: 40px;
            }
        }
        @media (max-width: 520px) {
            .hero {
                padding-top: 90px;
                padding-bottom: 28px;
            }
        }

        .hero-bg-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.08;
            pointer-events: none;
            z-index: 0;
        }

        .hero-slant {
            position: absolute;
            top: 0;
            right: -8%;
            width: 55%;
            height: 100%;
            background: linear-gradient(128deg, rgba(37,99,235,0.10) 0%, rgba(37,99,235,0.03) 60%, transparent 100%);
            clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
        }

        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.22;
            color: var(--ink);
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            position: relative;
        }
        .hero-title .highlight {
            color: var(--brand);
            position: relative;
            display: inline-block;
        }
        .hero-title .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            right: 0;
            height: 6px;
            background: rgba(37,99,235,0.15);
            border-radius: 4px;
            z-index: -1;
        }

        .hero-subtitle {
            font-size: 19px;
            line-height: 1.7;
            color: #475569;
            margin-bottom: 28px;
            font-weight: 400;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }

        .hero-stat-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 8px;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-value {
            font-size: 26px;
            font-weight: 800;
            color: var(--brand);
            letter-spacing: -0.3px;
        }
        .hero-stat-label {
            font-size: 14px;
            color: var(--muted);
            font-weight: 450;
        }

        .hero-side-card {
            position: relative;
            z-index: 1;
            background: #FFFFFF;
            border-radius: 16px;
            box-shadow: var(--shadow-hero);
            border: 1px solid var(--border-light);
            padding: 20px;
            width: 100%;
            max-width: 420px;
        }
        .hero-side-card .card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }
        .hero-side-card .card-title {
            font-weight: 700;
            font-size: 16px;
            color: var(--ink);
        }
        .hero-side-card .match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid #F1F5F9;
        }
        .hero-side-card .match-row:last-child {
            border-bottom: none;
        }
        .hero-side-card .team-name {
            font-weight: 600;
            font-size: 14px;
            color: #334155;
        }
        .hero-side-card .score {
            font-weight: 800;
            font-size: 16px;
            color: var(--brand);
        }
        .hero-side-card .match-status {
            font-size: 11px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 999px;
            background-color: #FEE2E2;
            color: #B91C1C;
        }
        .hero-side-card .match-status.live {
            background-color: #DCFCE7;
            color: #15803D;
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 31px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-stat-value {
                font-size: 22px;
            }
            .hero-side-card {
                max-width: 100%;
                margin-top: 24px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 25px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-stat-row {
                gap: 16px;
            }
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 18px;
            }
        }
        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        .feature-card {
            background: #FFFFFF;
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(37,99,235,0.35);
        }
        .feature-card .icon-wrap {
            width: 46px;
            height: 46px;
            border-radius: 10px;
            background: #EFF6FF;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand);
            font-size: 22px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }
        .feature-card p {
            font-size: 15px;
            line-height: 1.6;
            color: var(--muted);
        }
        .feature-card .cover-img {
            border-radius: 10px;
            width: 100%;
            height: 140px;
            object-fit: cover;
            margin-bottom: 14px;
        }

        /* Scene Section */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        @media (max-width: 1024px) {
            .scene-grid {
                gap: 18px;
            }
        }
        @media (max-width: 768px) {
            .scene-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        .scene-item {
            background: #FFFFFF;
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .scene-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(37,99,235,0.30);
            transform: translateY(-2px);
        }
        .scene-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background: var(--brand);
            color: #FFFFFF;
            font-weight: 700;
            font-size: 15px;
            margin-bottom: 12px;
        }
        .scene-item h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--ink);
        }
        .scene-item p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.6;
        }
        .scene-item .scene-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 14px;
        }

        /* Social proof / Partnerships */
        .partner-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            margin-top: 28px;
        }
        .partner-badge {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 600;
            color: #334155;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
            cursor: default;
        }
        .partner-badge:hover {
            border-color: var(--brand);
            box-shadow: 0 4px 12px rgba(37,99,235,0.10);
            transform: translateY(-1px);
        }
        .partner-badge i {
            color: var(--brand);
            font-size: 16px;
        }

        /* Compare Table */
        .compare-table-wrap {
            max-width: 900px;
            margin: 28px auto 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            background: #FFFFFF;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
        }
        .compare-table th,
        .compare-table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid #F1F5F9;
            vertical-align: top;
        }
        .compare-table thead th {
            background: #F8FAFC;
            font-weight: 700;
            color: var(--ink);
            font-size: 15px;
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table .highlight-col {
            background: #FAFBFF;
            border-left: 3px solid var(--brand);
        }
        .compare-table .highlight-col strong {
            color: var(--brand);
            font-weight: 700;
        }
        .compare-check {
            color: #15803D;
            font-weight: 700;
        }
        .compare-x {
            color: #B91C1C;
            font-weight: 700;
        }

        @media (max-width: 768px) {
            .compare-table th,
            .compare-table td {
                padding: 10px 12px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .compare-table-wrap {
                overflow-x: auto;
            }
            .compare-table {
                min-width: 520px;
                font-size: 13px;
            }
        }

        /* News cards */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 28px;
        }
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }
        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        .news-card {
            background: #FFFFFF;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: rgba(37,99,235,0.35);
        }
        .news-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
        }
        .news-card .news-body {
            padding: 18px;
        }
        .news-card .news-date {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--ink);
            margin-bottom: 8px;
            transition: color var(--transition);
        }
        .news-card:hover h3 {
            color: var(--brand);
        }
        .news-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .news-link {
            font-size: 14px;
            font-weight: 650;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-link:hover {
            color: var(--brand-dark);
            gap: 8px;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 28px auto 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #FFFFFF;
            border-radius: 14px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            padding: 20px 24px;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(37,99,235,0.30);
            box-shadow: var(--shadow-card);
        }
        .faq-q {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .faq-q .q-mark {
            color: var(--brand);
            font-weight: 800;
            flex-shrink: 0;
        }
        .faq-a {
            font-size: 15px;
            line-height: 1.7;
            color: #475569;
            display: flex;
            gap: 10px;
        }
        .faq-a .a-mark {
            color: var(--cyan-dark);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Guarantee strip */
        .guarantee-strip {
            background: #FFFFFF;
            border-radius: 14px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            padding: 20px 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            justify-content: space-between;
            margin-top: 24px;
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: #334155;
            font-weight: 550;
        }
        .guarantee-item i {
            color: var(--brand);
            font-size: 20px;
            width: 28px;
            text-align: center;
        }

        /* Category entry grid */
        .cat-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
            margin-top: 28px;
        }
        @media (max-width: 1024px) {
            .cat-entry-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .cat-entry-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }
        .cat-entry-card {
            background: #FFFFFF;
            border-radius: 14px;
            padding: 18px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: block;
        }
        .cat-entry-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(37,99,235,0.40);
            transform: translateY(-2px);
            color: var(--ink);
        }
        .cat-entry-card .cat-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .cat-entry-card .cat-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.5;
        }

        /* Latest news list */
        .latest-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-top: 24px;
        }
        .latest-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #FFFFFF;
            border-radius: 12px;
            padding: 14px 18px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .latest-item:hover {
            box-shadow: var(--shadow-card);
            border-color: rgba(37,99,235,0.30);
            transform: translateX(2px);
            color: var(--ink);
        }
        .latest-item img {
            width: 80px;
            height: 60px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .latest-item .li-body {
            flex: 1;
            min-width: 0;
        }
        .latest-item .li-title {
            font-size: 16px;
            font-weight: 650;
            color: var(--ink);
            margin-bottom: 4px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .latest-item .li-meta {
            font-size: 13px;
            color: var(--muted);
        }
        .latest-item .li-tag {
            flex-shrink: 0;
        }

        /* Subscription form */
        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 500px;
            margin-top: 20px;
        }
        .subscribe-input {
            flex: 1;
            min-width: 0;
            padding: 12px 16px;
            border: 1.5px solid #E2E8F0;
            border-radius: 10px;
            font-size: 15px;
            background: #F1F5F9;
            color: var(--ink);
            transition: all var(--transition);
        }
        .subscribe-input:focus {
            outline: none;
            border-color: var(--brand);
            background: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(37,99,235,0.10);
        }
        .subscribe-input::placeholder {
            color: var(--soft);
        }
        @media (max-width: 520px) {
            .subscribe-form {
                flex-direction: column;
            }
        }

        /* Footer */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding-top: 40px;
            padding-bottom: 100px;
            position: relative;
        }
        .footer-brand-row {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 24px;
        }
        .footer-brand-text {
            max-width: 300px;
        }
        .footer-brand-text .logo-text {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
        }
        .footer-brand-text p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            list-style: none;
            align-items: center;
        }
        .footer-links a {
            font-size: 14px;
            color: #475569;
            font-weight: 500;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--brand);
        }
        .footer-bottom {
            border-top: 1px solid #F1F5F9;
            padding-top: 18px;
            font-size: 13px;
            color: var(--muted);
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            align-items: center;
            justify-content: flex-start;
        }
        .footer-bottom a {
            color: #475569;
            font-weight: 500;
        }
        .footer-bottom a:hover {
            color: var(--brand);
        }

        /* Fixed bottom CTA */
        .fixed-bottom-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(10px);
            border-top: 1px solid var(--border-light);
            box-shadow: 0 -4px 16px rgba(37,99,235,0.08);
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            padding: 0 16px;
        }
        .fixed-bottom-cta .cta-text {
            font-size: 15px;
            font-weight: 650;
            color: var(--ink);
            max-width: 340px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        @media (max-width: 520px) {
            .fixed-bottom-cta {
                height: 56px;
                gap: 10px;
                padding: 0 12px;
            }
            .fixed-bottom-cta .cta-text {
                font-size: 13px;
                max-width: 200px;
            }
            .fixed-bottom-cta .btn {
                padding: 8px 14px;
                font-size: 13px;
                border-radius: 8px;
            }
        }

        /* Multi-device */
        .device-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 28px;
        }
        @media (max-width: 1024px) {
            .device-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .device-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
        }
        .device-item {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 18px 16px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            font-size: 14px;
            font-weight: 600;
            color: #334155;
            transition: all var(--transition);
            cursor: default;
        }
        .device-item i {
            font-size: 26px;
            color: var(--brand);
            margin-bottom: 6px;
            display: block;
        }
        .device-item:hover {
            box-shadow: var(--shadow-card);
            border-color: rgba(37,99,235,0.35);
            transform: translateY(-2px);
        }

        /* Usage guide */
        .guide-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        @media (max-width: 768px) {
            .guide-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }
        .guide-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 18px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition);
        }
        .guide-card:hover {
            box-shadow: var(--shadow-card);
            border-color: rgba(37,99,235,0.30);
        }
        .guide-card .guide-num {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: #EFF6FF;
            color: var(--brand);
            font-weight: 800;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .guide-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .guide-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.5;
        }

        /* Brand intro block */
        .brand-intro-text {
            font-size: 16px;
            line-height: 1.9;
            color: #334155;
            max-width: 880px;
            margin: 0 auto;
            text-align: justify;
        }
        .brand-intro-text p {
            margin-bottom: 18px;
        }

        /* Section spacing adjustments */
        .section-spacer {
            height: 12px;
        }

        @media (max-width: 768px) {
            .section-spacer {
                height: 6px;
            }
        }

        /* Data bar */
        .data-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            justify-content: center;
            margin-top: 28px;
        }
        .data-item {
            text-align: center;
        }
        .data-item .data-value {
            font-size: 34px;
            font-weight: 800;
            color: var(--brand);
            letter-spacing: -0.5px;
            line-height: 1.1;
        }
        .data-item .data-label {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
        }

        /* Transition helpers */
        .fade-in {
            animation: fadeInUp 0.6s ease-out both;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category2 */
:root {
  --brand: #2563EB;
  --brand-dark: #1E40AF;
  --brand-light: #3B82F6;
  --cyan: #06B6D4;
  --cyan-dark: #0E7490;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --ink: #1E293B;
  --muted: #64748B;
  --soft: #94A3B8;
  --border: #E2E8F0;
  --border-light: #EEF2F7;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.05), 0 4px 16px rgba(37,99,235,0.06);
  --shadow-card-hover: 0 2px 6px rgba(0,0,0,0.07), 0 12px 32px rgba(37,99,235,0.10);
  --shadow-hero: 0 8px 30px rgba(37,99,235,0.12);
  --transition: 300ms ease-out;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}
a:hover {
  color: var(--brand);
  text-decoration: none;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button, input {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}
button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
section {
  padding: 64px 0;
  position: relative;
}
.section-alt {
  background-color: #FFFFFF;
}
.section-tint {
  background-color: #F1F5F9;
}
.section-cyanish {
  background: linear-gradient(180deg, #F8FAFC 0%, #F0F7FA 100%);
}
.brand-badge {
  display: inline-block;
  background-color: #EFF6FF;
  color: var(--brand);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.3px;
  white-space: nowrap;
}
.section-tag {
  display: inline-block;
  color: var(--brand);
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}
.section-desc {
  font-size: 17px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 780px;
  margin-bottom: 32px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 650;
  font-size: 16px;
  line-height: 1.2;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-align: center;
  white-space: nowrap;
  user-select: none;
}
.btn-primary {
  background-color: var(--brand);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(37,99,235,0.25);
}
.btn-primary:hover {
  background-color: var(--brand-dark);
  color: #FFFFFF;
  transform: scale(1.02);
  box-shadow: 0 6px 18px rgba(37,99,235,0.32);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-secondary {
  background-color: #FFFFFF;
  color: var(--brand);
  border: 1.5px solid var(--brand);
}
.btn-secondary:hover {
  background-color: #F1F5F9;
  color: var(--brand-dark);
  border-color: var(--brand-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37,99,235,0.10);
}
.btn-ghost {
  background-color: transparent;
  color: var(--brand);
  border: 1px solid #E2E8F0;
}
.btn-ghost:hover {
  background-color: #F8FAFC;
  border-color: var(--brand);
  color: var(--brand-dark);
  transform: translateY(-1px);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  border-radius: 8px;
}
.site-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: all var(--transition);
}
.header-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  transition: all var(--transition);
}
.header-channel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 40px;
  border-top: 1px solid var(--border-light);
  transition: all var(--transition);
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--brand);
  color: #FFFFFF;
  border-radius: 8px;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.5px;
}
.logo-text {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.3px;
  color: var(--ink);
}
.logo-text .accent {
  color: var(--brand);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  position: relative;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-radius: 8px;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--brand);
  background: #EFF6FF;
}
.nav-link.active {
  color: var(--brand);
  background: #EFF6FF;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
}
.header-action {
  display: flex;
  align-items: center;
  gap: 4px;
}
.search-toggle {
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 16px;
  transition: all var(--transition);
}
.search-toggle:hover {
  color: var(--brand);
  background: #EFF6FF;
}
.mobile-menu-btn {
  display: none;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  color: var(--ink);
  font-size: 20px;
  transition: all var(--transition);
}
.mobile-menu-btn:hover {
  color: var(--brand);
  background: #EFF6FF;
}
.header-shrunk-row {
  display: none;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  transition: all var(--transition);
}
.site-header.scrolled .header-brand-row {
  display: none;
}
.site-header.scrolled .header-channel-row {
  display: none;
}
.site-header.scrolled .header-shrunk-row {
  display: flex;
}
.mobile-nav-panel {
  display: none;
  background: #FFFFFF;
  border-top: 1px solid var(--border-light);
  padding: 12px 16px;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav-panel.open {
  display: flex;
}
.mobile-nav-panel .nav-link {
  display: block;
  padding: 10px 12px;
  font-size: 15px;
  border-radius: 8px;
}
.mobile-nav-panel .nav-link.active {
  background: #EFF6FF;
  color: var(--brand);
}
.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all var(--transition);
  border: 1px solid var(--border-light);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--brand);
}
.card-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.card-body {
  padding: 18px;
}
.card-tag {
  display: inline-block;
  background: #EFF6FF;
  color: var(--brand);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--ink);
}
.card-title a:hover {
  color: var(--brand);
}
.card-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 12px;
}
.card-date {
  font-size: 13px;
  color: var(--soft);
}
.article-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 20px;
  border: 1px solid var(--border-light);
  transition: all var(--transition);
  margin-bottom: 16px;
}
.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--brand);
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--soft);
  margin-bottom: 8px;
}
.tag-pill {
  display: inline-block;
  background: #F1F5F9;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 999px;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.tag-pill:hover {
  background: #EFF6FF;
  color: var(--brand);
  border-color: var(--brand);
}
.cta-box {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
}
.cta-box input {
  background: #F1F5F9;
  border: 2px solid transparent;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 15px;
  color: var(--ink);
  width: 100%;
  transition: all var(--transition);
}
.cta-box input:focus {
  border-color: var(--brand);
  outline: none;
  background: #FFFFFF;
}
.guarantee-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
}
.guarantee-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
}
.guarantee-item i {
  color: var(--brand);
  font-size: 16px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
}
.breadcrumb a {
  color: var(--muted);
}
.breadcrumb a:hover {
  color: var(--brand);
}
.breadcrumb span.sep {
  color: var(--soft);
}
.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-light);
  padding: 40px 0 24px;
  margin-top: 32px;
}
.footer-brand-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-links a {
  font-size: 14px;
  color: var(--muted);
  font-weight: 500;
}
.footer-links a:hover {
  color: var(--brand);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--soft);
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}
.footer-bottom a {
  font-size: 13px;
  color: var(--soft);
}
.footer-bottom a:hover {
  color: var(--brand);
}
.next-cat-card {
  background: #FFFFFF;
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  border: 1px solid var(--border-light);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.next-cat-card:hover {
  transform: translateY(-3px);
  border-color: var(--brand);
  box-shadow: var(--shadow-card);
}
.next-cat-card i {
  font-size: 28px;
  color: var(--brand);
  margin-bottom: 12px;
}
.next-cat-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}
.next-cat-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}
@media (max-width: 1024px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section-title {
    font-size: 25px;
  }
  .section-desc {
    font-size: 15px;
    margin-bottom: 24px;
  }
  .nav-link {
    padding: 6px 8px;
    font-size: 13px;
  }
}
@media (max-width: 768px) {
  .container {
    padding-left: 12px;
    padding-right: 12px;
  }
  section {
    padding: 48px 0;
  }
  .header-channel-row {
    display: none;
  }
  .desktop-nav {
    display: none;
  }
  .header-brand-row {
    min-height: 56px;
  }
  .mobile-menu-btn {
    display: inline-flex;
  }
  .header-shrunk-row .desktop-nav {
    display: none;
  }
  .site-header.scrolled .header-shrunk-row {
    display: flex;
  }
  .site-header.scrolled .header-brand-row {
    display: none;
  }
  .mobile-nav-panel {
    display: none;
  }
  .mobile-nav-panel.open {
    display: flex;
  }
  .mobile-nav-panel .nav-link.active::after {
    display: none;
  }
  .section-title {
    font-size: 21px;
  }
  .section-desc {
    font-size: 14px;
  }
  .cta-box {
    padding: 24px 20px;
  }
  .guarantee-bar {
    gap: 16px;
    padding: 16px 20px;
  }
  .footer-brand-row {
    flex-direction: column;
  }
}
@media (max-width: 520px) {
  .container {
    padding-left: 12px;
    padding-right: 12px;
  }
  section {
    padding: 40px 0;
  }
  .btn {
    padding: 10px 18px;
    font-size: 14px;
  }
  .section-title {
    font-size: 19px;
  }
  .card-title {
    font-size: 16px;
  }
  .guarantee-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .footer-bottom {
    gap: 10px;
  }
}

/* roulang page: category1 */
:root {
            --brand: #2563EB;
            --brand-dark: #1E40AF;
            --brand-light: #3B82F6;
            --cyan: #06B6D4;
            --cyan-dark: #0E7490;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --ink: #1E293B;
            --muted: #64748B;
            --soft: #94A3B8;
            --border: #E2E8F0;
            --border-light: #EEF2F7;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 16px rgba(37, 99, 235, 0.06);
            --shadow-card-hover: 0 2px 6px rgba(0, 0, 0, 0.07), 0 12px 32px rgba(37, 99, 235, 0.10);
            --shadow-hero: 0 8px 30px rgba(37, 99, 235, 0.12);
            --transition: 300ms ease-out;
            --header-main-height: 48px;
            --header-channel-height: 40px;
            --header-shrunk-height: 56px;
            --hero-bg: #F8FAFC;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Inter', sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--ink);
            background-color: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), transform var(--transition);
        }
        a:hover {
            color: var(--brand);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding: 56px 0;
            position: relative;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-tint {
            background-color: #F1F5F9;
        }
        .section-cyanish {
            background: linear-gradient(180deg, #F8FAFC 0%, #F0F7FA 100%);
        }
        .section-tag {
            display: inline-block;
            color: var(--brand);
            font-size: 15px;
            font-weight: 650;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 17px;
            line-height: 1.7;
            color: var(--muted);
            max-width: 780px;
            margin-bottom: 32px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 650;
            font-size: 16px;
            line-height: 1.2;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            user-select: none;
        }
        .btn-primary {
            background-color: var(--brand);
            color: #FFFFFF;
            box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--brand-dark);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: 0 6px 18px rgba(37, 99, 235, 0.32);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-secondary:hover {
            background-color: #F1F5F9;
            color: var(--brand-dark);
            border-color: var(--brand-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.10);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }
        .card {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--brand);
        }
        .badge {
            display: inline-block;
            background-color: #EFF6FF;
            color: var(--brand);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 999px;
            letter-spacing: 0.2px;
            white-space: nowrap;
        }
        .badge-cyan {
            background-color: #ECFEFF;
            color: var(--cyan-dark);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--brand);
            color: #FFFFFF;
            border-radius: 8px;
            font-weight: 800;
            font-size: 15px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 800;
            font-size: 17px;
            color: var(--ink);
            letter-spacing: -0.2px;
            white-space: nowrap;
        }
        .logo-text .accent {
            background: linear-gradient(135deg, var(--brand) 0%, var(--cyan) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background-color: #FFFFFF;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
            transition: all var(--transition);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-main-height);
            gap: 16px;
        }
        .header-action {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .header-channel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-channel-height);
            gap: 16px;
            border-top: 1px solid var(--border-light);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 550;
            color: var(--muted);
            padding: 6px 12px;
            border-radius: 6px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--brand);
            background-color: #F1F5F9;
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 650;
            border-bottom-color: var(--brand);
        }
        .header-shrunk-row {
            display: none;
            align-items: center;
            justify-content: space-between;
            height: var(--header-shrunk-height);
            gap: 16px;
        }
        .site-header.shrunk .header-brand-row {
            display: none;
        }
        .site-header.shrunk .header-channel-row {
            display: none;
        }
        .site-header.shrunk .header-shrunk-row {
            display: flex;
        }
        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            color: var(--muted);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            font-size: 15px;
        }
        .search-toggle:hover {
            color: var(--brand);
            background-color: #F1F5F9;
        }
        .mobile-menu-btn {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            color: var(--ink);
            background: transparent;
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all var(--transition);
            font-size: 18px;
            flex-shrink: 0;
        }
        .mobile-menu-btn:hover {
            color: var(--brand);
            border-color: var(--brand);
            background-color: #F8FAFC;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            gap: 2px;
            background-color: #FFFFFF;
            border-top: 1px solid var(--border-light);
            padding: 8px 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition);
        }
        .mobile-nav.open {
            max-height: 420px;
        }
        .mobile-nav .nav-link {
            font-size: 15px;
            padding: 12px 16px;
            border-left: 3px solid transparent;
            border-bottom: none;
            border-radius: 0;
        }
        .mobile-nav .nav-link.active {
            border-left-color: var(--brand);
            background-color: #F8FAFC;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--muted);
            flex-wrap: wrap;
        }
        .breadcrumb a:hover {
            color: var(--brand);
        }
        .breadcrumb .separator {
            color: var(--soft);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--ink);
            font-weight: 600;
        }
        .page-header-compact {
            padding: 36px 0 24px;
            background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
            border-bottom: 1px solid var(--border-light);
        }
        .entry-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background-color: #E2E8F0;
        }
        .entry-card-body {
            padding: 16px 18px 18px;
        }
        .entry-card-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--ink);
            margin-bottom: 6px;
            transition: color var(--transition);
        }
        .entry-card:hover .entry-card-title {
            color: var(--brand);
        }
        .entry-card-excerpt {
            font-size: 14px;
            line-height: 1.6;
            color: var(--muted);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .entry-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            font-size: 13px;
            color: var(--soft);
        }
        .entry-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--brand);
            transition: color var(--transition);
            white-space: nowrap;
        }
        .entry-card-link:hover {
            color: var(--brand-dark);
        }
        .hot-card {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 14px;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            transition: all var(--transition);
        }
        .hot-card:hover {
            box-shadow: var(--shadow-card);
            border-color: var(--brand);
        }
        .hot-card-img {
            width: 80px;
            height: 56px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
            background-color: #E2E8F0;
        }
        .hot-card-title {
            font-size: 15px;
            font-weight: 650;
            line-height: 1.4;
            color: var(--ink);
            margin-bottom: 4px;
            transition: color var(--transition);
        }
        .hot-card:hover .hot-card-title {
            color: var(--brand);
        }
        .hot-card-excerpt {
            font-size: 13px;
            line-height: 1.5;
            color: var(--muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: 999px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            color: var(--muted);
            font-size: 14px;
            font-weight: 550;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .tag-pill:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: #EFF6FF;
            transform: translateY(-1px);
        }
        .faq-item {
            background: #FFFFFF;
            border-radius: var(--radius);
            padding: 18px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card);
        }
        .faq-q {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .faq-q .q-icon {
            color: var(--brand);
            font-weight: 800;
            flex-shrink: 0;
            margin-top: 1px;
        }
        .faq-a {
            font-size: 15px;
            line-height: 1.65;
            color: var(--muted);
            padding-left: 26px;
        }
        .faq-a .a-icon {
            color: var(--cyan);
            font-weight: 800;
        }
        .next-cat-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .next-cat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
            border-color: var(--brand);
        }
        .next-cat-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #EFF6FF;
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 20px;
        }
        .next-cat-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .next-cat-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.5;
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1.5px solid var(--border);
            background-color: #F1F5F9;
            font-size: 15px;
            color: var(--ink);
            transition: all var(--transition);
            outline: none;
        }
        .form-input:focus {
            border-color: var(--brand);
            background-color: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        .form-input::placeholder {
            color: var(--soft);
        }
        .site-footer {
            background-color: #0F172A;
            color: #E2E8F0;
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        .footer-brand-row {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .footer-brand-text .logo-text {
            color: #F1F5F9;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
        }
        .footer-links a {
            color: #CBD5E1;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 20px;
            font-size: 13px;
            color: #94A3B8;
            border-top: 1px solid #1E293B;
            padding-top: 20px;
        }
        .footer-bottom a {
            color: #94A3B8;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }
        @media (max-width: 1024px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 27px;
            }
            .entry-card-img {
                height: 160px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 23px;
            }
            .section-desc {
                font-size: 15px;
                margin-bottom: 22px;
            }
            .header-brand-row {
                height: auto;
                padding: 10px 0;
            }
            .header-channel-row {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .mobile-nav {
                display: flex;
            }
            .header-shrunk-row {
                display: none !important;
            }
            .site-header.shrunk .header-brand-row {
                display: flex;
            }
            .site-header.shrunk .header-channel-row {
                display: none;
            }
            .entry-card-img {
                height: 170px;
            }
            .hot-card-img {
                width: 72px;
                height: 50px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            section {
                padding: 32px 0;
            }
            .section-title {
                font-size: 21px;
            }
            .section-desc {
                font-size: 14px;
                margin-bottom: 18px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 15px;
            }
            .entry-card-img {
                height: 150px;
            }
            .entry-card-body {
                padding: 14px 14px 16px;
            }
            .entry-card-title {
                font-size: 16px;
            }
            .footer-brand-row {
                flex-direction: column;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category3 */
:root {
            --brand: #2563EB;
            --brand-dark: #1E40AF;
            --brand-light: #3B82F6;
            --cyan: #06B6D4;
            --cyan-dark: #0E7490;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --ink: #1E293B;
            --muted: #64748B;
            --soft: #94A3B8;
            --border: #E2E8F0;
            --border-light: #EEF2F7;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-card: 0 1px 3px rgba(0,0,0,0.05), 0 4px 16px rgba(37,99,235,0.06);
            --shadow-card-hover: 0 2px 6px rgba(0,0,0,0.07), 0 12px 32px rgba(37,99,235,0.10);
            --shadow-hero: 0 8px 30px rgba(37,99,235,0.12);
            --transition: 300ms ease-out;
            --header-main-height: 48px;
            --header-channel-height: 40px;
            --header-shrunk-height: 56px;
            --hero-bg: #F8FAFC;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Inter', sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--ink);
            background-color: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), transform var(--transition);
        }
        a:hover {
            color: var(--brand);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section { padding: 56px 0; position: relative; }
        .section-alt { background-color: #FFFFFF; }
        .section-tint { background-color: #F1F5F9; }
        .section-cyanish { background: linear-gradient(180deg, #F8FAFC 0%, #F0F7FA 100%); }
        .brand-badge {
            display: inline-block;
            background-color: #EFF6FF;
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .section-tag {
            display: inline-block;
            color: var(--brand);
            font-size: 15px;
            font-weight: 650;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            text-transform: none;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 17px;
            line-height: 1.7;
            color: var(--muted);
            max-width: 780px;
            margin-bottom: 32px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 650;
            font-size: 16px;
            line-height: 1.2;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            user-select: none;
        }
        .btn-primary {
            background-color: var(--brand);
            color: #FFFFFF;
            box-shadow: 0 2px 6px rgba(37,99,235,0.25);
        }
        .btn-primary:hover {
            background-color: var(--brand-dark);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: 0 6px 18px rgba(37,99,235,0.32);
        }
        .btn-primary:active { transform: scale(0.98); }
        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-secondary:hover {
            background-color: #F1F5F9;
            color: var(--brand-dark);
            border-color: var(--brand-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37,99,235,0.10);
        }
        .btn-ghost {
            background-color: transparent;
            color: var(--brand);
            border: 1px solid #E2E8F0;
        }
        .btn-ghost:hover {
            background-color: #F8FAFC;
            border-color: var(--brand);
            color: var(--brand-dark);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #FFFFFF;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
            transition: box-shadow var(--transition);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 48px;
            border-bottom: 1px solid var(--border-light);
        }
        .header-channel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 40px;
            gap: 16px;
        }
        .header-shrunk-row {
            display: none;
            align-items: center;
            justify-content: space-between;
            height: 56px;
            padding: 0 0;
        }
        .site-header.scrolled .header-brand-row { display: none; }
        .site-header.scrolled .header-channel-row { display: none; }
        .site-header.scrolled .header-shrunk-row { display: flex; }
        .site-header.scrolled { box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--brand) 0%, var(--cyan) 100%);
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.3px;
            color: var(--ink);
            white-space: nowrap;
        }
        .logo-text .accent { color: var(--brand); }
        .header-action {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .search-toggle {
            background: none;
            border: none;
            color: var(--muted);
            font-size: 16px;
            padding: 8px;
            cursor: pointer;
            border-radius: 8px;
            transition: all var(--transition);
        }
        .search-toggle:hover { color: var(--brand); background: #F1F5F9; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 550;
            color: var(--ink);
            padding: 6px 12px;
            border-radius: 8px;
            position: relative;
            white-space: nowrap;
            transition: all var(--transition);
        }
        .nav-link:hover {
            color: var(--brand);
            background: #F1F5F9;
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 650;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 12px;
            right: 12px;
            height: 2.5px;
            background: var(--brand);
            border-radius: 2px;
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--ink);
            padding: 6px;
            cursor: pointer;
            border-radius: 8px;
            transition: all var(--transition);
        }
        .hamburger-btn:hover { color: var(--brand); background: #F1F5F9; }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 8px 0 16px;
            border-top: 1px solid var(--border-light);
            background: #fff;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu .nav-link {
            display: block;
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 16px;
        }
        .mobile-menu .nav-link.active::after { display: none; }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 12px;
        }
        .breadcrumb a { color: var(--muted); }
        .breadcrumb a:hover { color: var(--brand); }
        .breadcrumb .sep { color: var(--soft); }
        .breadcrumb .current { color: var(--brand); font-weight: 600; }

        /* Guide cards */
        .guide-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--brand);
        }
        .guide-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: #F1F5F9;
        }
        .guide-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .guide-card-tag {
            display: inline-block;
            background: #EFF6FF;
            color: var(--brand);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .guide-card-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--ink);
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }
        .guide-card-desc {
            font-size: 14px;
            line-height: 1.6;
            color: var(--muted);
            margin-bottom: 14px;
            flex: 1;
        }
        .guide-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--soft);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }
        .guide-card-link {
            color: var(--brand);
            font-weight: 600;
            font-size: 14px;
        }
        .guide-card-link:hover { color: var(--brand-dark); }

        /* Hot picks */
        .hot-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--card);
            border-radius: var(--radius);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .hot-list-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--brand);
        }
        .hot-rank {
            font-size: 28px;
            font-weight: 800;
            color: var(--brand-light);
            min-width: 40px;
            text-align: center;
            letter-spacing: -1px;
        }
        .hot-rank.top1 { color: #F59E0B; }
        .hot-rank.top2 { color: var(--brand); }
        .hot-rank.top3 { color: var(--cyan); }
        .hot-content { flex: 1; }
        .hot-title {
            font-size: 16px;
            font-weight: 650;
            color: var(--ink);
            margin-bottom: 4px;
            line-height: 1.35;
        }
        .hot-meta {
            font-size: 13px;
            color: var(--soft);
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            background: #F1F5F9;
            color: var(--muted);
            font-size: 14px;
            font-weight: 550;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .tag-chip:hover {
            background: #EFF6FF;
            color: var(--brand);
            border-color: var(--brand);
            transform: translateY(-1px);
        }
        .tag-chip i {
            margin-right: 6px;
            font-size: 12px;
            color: var(--cyan);
        }

        /* CTA box */
        .subscribe-box {
            background: linear-gradient(135deg, #EFF6FF 0%, #F0F7FA 100%);
            border: 1px solid #DBEAFE;
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
            justify-content: space-between;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            flex: 1;
            min-width: 260px;
        }
        .subscribe-input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: #F1F5F9;
            font-size: 15px;
            color: var(--ink);
            transition: all var(--transition);
        }
        .subscribe-input:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
            background: #fff;
        }
        .subscribe-btn {
            background: var(--brand);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 650;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .subscribe-btn:hover {
            background: var(--brand-dark);
            transform: scale(1.02);
            box-shadow: 0 6px 18px rgba(37,99,235,0.3);
        }

        /* FAQ */
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: #BFDBFE;
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 16px;
            font-weight: 650;
            color: var(--ink);
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .faq-question .q-icon {
            color: var(--brand);
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 1px;
        }
        .faq-answer {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            line-height: 1.65;
            color: var(--muted);
            padding-left: 4px;
        }
        .faq-answer .a-icon {
            color: var(--cyan);
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
            margin-top: 1px;
        }

        /* Related categories */
        .cat-link-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 20px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all var(--transition);
        }
        .cat-link-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--brand);
        }
        .cat-link-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: #EFF6FF;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand);
            font-size: 20px;
            flex-shrink: 0;
        }
        .cat-link-title {
            font-size: 16px;
            font-weight: 650;
            color: var(--ink);
        }
        .cat-link-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.4;
        }

        /* Guarantee bar */
        .guarantee-bar {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 20px 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            box-shadow: var(--shadow-sm);
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            font-weight: 550;
        }
        .guarantee-item i {
            color: var(--cyan);
            font-size: 15px;
        }

        /* Footer */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border-light);
            padding: 40px 0 28px;
            margin-top: 32px;
        }
        .footer-brand-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 28px;
        }
        .footer-brand-text p {
            font-size: 14px;
            color: var(--muted);
            max-width: 380px;
            line-height: 1.6;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--muted);
            font-weight: 550;
            transition: all var(--transition);
        }
        .footer-links a:hover { color: var(--brand); }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--soft);
        }
        .footer-bottom a {
            color: var(--soft);
            margin-left: 8px;
        }
        .footer-bottom a:hover { color: var(--brand); }
        .footer-bottom i { margin-right: 4px; }

        /* Responsive */
        @media (max-width: 1024px) {
            .container { padding-left: 20px; padding-right: 20px; }
            .section-title { font-size: 26px; }
            .header-channel-row { gap: 8px; }
            .nav-link { font-size: 14px; padding: 6px 8px; }
        }
        @media (max-width: 768px) {
            .container { padding-left: 16px; padding-right: 16px; }
            section { padding: 40px 0; }
            .section-title { font-size: 23px; }
            .header-brand-row { height: 52px; }
            .header-channel-row { display: none; }
            .header-shrunk-row { display: flex; height: 52px; }
            .header-shrunk-row .desktop-nav { display: none; }
            .hamburger-btn { display: inline-block; }
            .mobile-menu .nav-link { font-size: 15px; padding: 10px 12px; }
            .guide-card-img { height: 160px; }
            .subscribe-box { padding: 24px 20px; }
            .faq-item { padding: 16px 18px; }
            .faq-question { font-size: 15px; }
            .faq-answer { font-size: 14px; }
            .hot-list-item { padding: 12px 16px; }
            .footer-brand-row { flex-direction: column; gap: 16px; }
            .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
            .footer-bottom a { margin-left: 0; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 12px; padding-right: 12px; }
            section { padding: 32px 0; }
            .section-title { font-size: 21px; }
            .section-desc { font-size: 14px; }
            .guide-card-img { height: 140px; }
            .guide-card-title { font-size: 16px; }
            .guide-card-desc { font-size: 13px; }
            .btn { padding: 10px 18px; font-size: 14px; }
            .subscribe-form { flex-direction: column; }
            .subscribe-input { min-width: 100%; }
            .subscribe-btn { width: 100%; }
            .guarantee-bar { flex-direction: column; align-items: flex-start; padding: 16px 18px; }
            .cat-link-card { padding: 16px 18px; }
        }

/* roulang page: category4 */
:root {
            --brand: #2563EB;
            --brand-dark: #1E40AF;
            --brand-light: #3B82F6;
            --cyan: #06B6D4;
            --cyan-dark: #0E7490;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --ink: #1E293B;
            --muted: #64748B;
            --soft: #94A3B8;
            --border: #E2E8F0;
            --border-light: #EEF2F7;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-card: 0 1px 3px rgba(0,0,0,0.05), 0 4px 16px rgba(37,99,235,0.06);
            --shadow-card-hover: 0 2px 6px rgba(0,0,0,0.07), 0 12px 32px rgba(37,99,235,0.10);
            --shadow-hero: 0 8px 30px rgba(37,99,235,0.12);
            --transition: 300ms ease-out;
            --header-main-height: 48px;
            --header-channel-height: 40px;
            --header-shrunk-height: 56px;
            --hero-bg: #F8FAFC;
        }

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

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

        body {
            font-family: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Inter', sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--ink);
            background-color: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: calc(var(--header-main-height) + var(--header-channel-height));
            transition: padding-top 300ms ease-out;
        }

        body.header-shrunk {
            padding-top: var(--header-shrunk-height);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
        }

        section {
            padding: 64px 0;
            position: relative;
        }
        @media (max-width: 768px) {
            section {
                padding: 48px 0;
            }
        }
        @media (max-width: 520px) {
            section {
                padding: 40px 0;
            }
        }

        .section-alt {
            background-color: #FFFFFF;
        }
        .section-tint {
            background-color: #F1F5F9;
        }
        .section-cyanish {
            background: linear-gradient(180deg, #F8FAFC 0%, #F0F7FA 100%);
        }

        .brand-badge {
            display: inline-block;
            background-color: #EFF6FF;
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .section-tag {
            display: inline-block;
            color: var(--brand);
            font-size: 15px;
            font-weight: 650;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            text-transform: none;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.7;
            color: var(--muted);
            max-width: 780px;
            margin-bottom: 32px;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 25px;
            }
            .section-desc {
                font-size: 15px;
                margin-bottom: 24px;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 21px;
            }
            .section-desc {
                font-size: 14px;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 650;
            font-size: 16px;
            line-height: 1.2;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            user-select: none;
        }

        .btn-primary {
            background-color: var(--brand);
            color: #FFFFFF;
            box-shadow: 0 2px 6px rgba(37,99,235,0.25);
        }
        .btn-primary:hover {
            background-color: var(--brand-dark);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: 0 6px 18px rgba(37,99,235,0.32);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-secondary:hover {
            background-color: #F1F5F9;
            color: var(--brand-dark);
            border-color: var(--brand-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37,99,235,0.10);
        }

        .btn-ghost {
            background-color: transparent;
            color: var(--brand);
            border: 1px solid #E2E8F0;
        }
        .btn-ghost:hover {
            background-color: #F8FAFC;
            border-color: var(--brand);
            color: var(--brand-dark);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: 8px;
        }
        .btn-xs {
            padding: 6px 12px;
            font-size: 13px;
            border-radius: 6px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background-color: #FFFFFF;
            box-shadow: 0 1px 4px rgba(0,0,0,0.05);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-main-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            transition: opacity 300ms ease-out, height 300ms ease-out, border 300ms ease-out;
        }

        .header-channel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-channel-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            transition: opacity 300ms ease-out, height 300ms ease-out, border 300ms ease-out;
        }

        .header-shrunk-row {
            display: none;
            align-items: center;
            justify-content: space-between;
            height: var(--header-shrunk-height);
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            opacity: 0;
            transition: opacity 300ms ease-out;
        }

        body.header-shrunk .header-brand-row,
        body.header-shrunk .header-channel-row {
            display: none;
        }
        body.header-shrunk .header-shrunk-row {
            display: flex;
            opacity: 1;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background-color: var(--brand);
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 800;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 19px;
            font-weight: 800;
            letter-spacing: -0.3px;
            color: var(--ink);
            white-space: nowrap;
        }
        .logo-text .accent {
            color: var(--brand);
        }

        .header-action {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border: none;
            background: transparent;
            color: var(--muted);
            cursor: pointer;
            border-radius: 8px;
            font-size: 15px;
            transition: all var(--transition);
        }
        .search-toggle:hover {
            background-color: #F1F5F9;
            color: var(--brand);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-wrap: nowrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 14px;
            font-weight: 550;
            color: var(--muted);
            border-radius: 6px;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition), background var(--transition);
        }
        .nav-link:hover {
            color: var(--brand);
            background-color: #F8FAFC;
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 650;
            background-color: #EFF6FF;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background-color: var(--brand);
            border-radius: 1px;
        }

        /* Mobile nav */
        .mobile-hamburger {
            display: none;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border: none;
            background: transparent;
            color: var(--ink);
            cursor: pointer;
            border-radius: 8px;
            font-size: 18px;
            transition: all var(--transition);
        }
        .mobile-hamburger:hover {
            background-color: #F1F5F9;
        }

        .mobile-menu {
            display: none;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            padding: 16px 0;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 10px 16px;
            font-size: 15px;
            border-radius: 8px;
            margin: 2px 0;
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }

        @media (max-width: 768px) {
            .header-brand-row .header-action {
                display: none;
            }
            .header-channel-row {
                display: none;
            }
            .header-shrunk-row {
                display: flex;
                opacity: 1;
                height: var(--header-shrunk-height);
                position: relative;
            }
            body {
                padding-top: var(--header-shrunk-height);
            }
            body.header-shrunk {
                padding-top: var(--header-shrunk-height);
            }
            body.header-shrunk .header-shrunk-row {
                display: flex;
                opacity: 1;
            }
            .header-brand-row {
                display: none;
            }
            .mobile-hamburger {
                display: inline-flex;
            }
            .header-shrunk-row .nav-list {
                display: none;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: block;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            flex-wrap: wrap;
            margin-bottom: 8px;
        }
        .breadcrumb a {
            color: var(--muted);
        }
        .breadcrumb a:hover {
            color: var(--brand);
        }
        .breadcrumb i {
            font-size: 11px;
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--brand);
            font-weight: 600;
        }

        /* Page header compact */
        .page-header-compact {
            padding: 40px 0 24px;
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
        }
        .page-header-compact h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -0.5px;
            margin-bottom: 8px;
        }
        .page-header-compact .page-desc {
            font-size: 17px;
            color: var(--muted);
            line-height: 1.7;
            max-width: 780px;
        }
        @media (max-width: 768px) {
            .page-header-compact h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .page-header-compact h1 {
                font-size: 22px;
            }
            .page-header-compact .page-desc {
                font-size: 14px;
            }
        }

        /* Data cards grid */
        .data-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            border: 1.5px solid transparent;
            display: flex;
            flex-direction: column;
        }
        .data-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--brand);
        }
        .data-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #F1F5F9;
        }
        .data-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 500ms ease;
        }
        .data-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .data-card .badge-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: rgba(255,255,255,0.94);
            color: var(--brand);
            font-size: 12px;
            font-weight: 650;
            padding: 4px 10px;
            border-radius: 6px;
            letter-spacing: 0.3px;
            z-index: 1;
        }
        .data-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .data-card .card-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--ink);
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }
        .data-card .card-desc {
            font-size: 14px;
            line-height: 1.65;
            color: var(--muted);
            flex: 1;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .data-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--soft);
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
        }
        .data-card .read-more {
            font-weight: 600;
            color: var(--brand);
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .data-card .read-more:hover {
            color: var(--brand-dark);
        }

        /* Featured / editor pick */
        .featured-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .featured-item {
            display: flex;
            gap: 16px;
            align-items: center;
            background: var(--card);
            padding: 14px 16px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .featured-item:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card);
            transform: translateY(-1px);
        }
        .featured-item .feat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--brand);
            opacity: 0.25;
            line-height: 1;
            min-width: 36px;
            text-align: center;
        }
        .featured-item .feat-body {
            flex: 1;
        }
        .featured-item .feat-title {
            font-size: 15px;
            font-weight: 650;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .featured-item .feat-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.55;
        }
        .featured-item .feat-date {
            font-size: 12px;
            color: var(--soft);
            white-space: nowrap;
        }

        /* Tags */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 7px 16px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 550;
            color: var(--muted);
            cursor: pointer;
            transition: all var(--transition);
        }
        .tag-chip:hover {
            background: #EFF6FF;
            border-color: var(--brand);
            color: var(--brand);
        }

        /* CTA form */
        .cta-form-wrap {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 32px 36px;
            border: 1px solid var(--border-light);
        }
        .cta-form-wrap .form-title {
            font-size: 22px;
            font-weight: 750;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .cta-form-wrap .form-desc {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 18px;
        }
        .cta-form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .cta-form-row input[type="email"],
        .cta-form-row input[type="text"] {
            flex: 1;
            min-width: 240px;
            padding: 12px 16px;
            background: #F1F5F9;
            border: 1.5px solid transparent;
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--ink);
            transition: all var(--transition);
        }
        .cta-form-row input:focus {
            outline: none;
            border-color: var(--brand);
            background: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(37,99,235,0.10);
        }

        /* Assurance bar */
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
        }
        .assurance-item {
            background: #FFFFFF;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all var(--transition);
        }
        .assurance-item:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card);
        }
        .assurance-item .as-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #EFF6FF;
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .assurance-item .as-text h4 {
            font-size: 15px;
            font-weight: 650;
            color: var(--ink);
            margin-bottom: 2px;
        }
        .assurance-item .as-text p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.5;
        }

        /* Related category cards */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .related-cat-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            padding: 22px 20px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .related-cat-card:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .related-cat-card .rc-icon {
            font-size: 28px;
            color: var(--brand);
            margin-bottom: 10px;
        }
        .related-cat-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .related-cat-card p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Footer */
        .site-footer {
            background-color: #0F172A;
            color: #CBD5E1;
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .site-footer .footer-brand-row {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand-text p {
            max-width: 420px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 20px;
            font-size: 14px;
        }
        .site-footer .footer-links a {
            color: #94A3B8;
            transition: color var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: #FFFFFF;
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 18px;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            font-size: 13px;
            color: #94A3B8;
        }
        .site-footer .footer-bottom a {
            color: #94A3B8;
        }
        .site-footer .footer-bottom a:hover {
            color: #FFFFFF;
        }
        .site-footer .logo-icon {
            background-color: var(--brand);
            color: #FFFFFF;
        }
        .site-footer .logo-text {
            color: #FFFFFF;
        }
        .site-footer .logo-text .accent {
            color: #93C5FD;
        }

        /* Fixed bottom CTA bar (for classification page, keep lightweight) */
        .bottom-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: #FFFFFF;
            border-top: 1px solid var(--border-light);
            box-shadow: 0 -4px 16px rgba(0,0,0,0.06);
            z-index: 90;
            padding: 10px 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            min-height: 56px;
        }
        .bottom-cta-bar .cta-text {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
        }
        @media (max-width: 520px) {
            .bottom-cta-bar {
                min-height: 52px;
                padding: 8px 12px;
            }
            .bottom-cta-bar .cta-text {
                font-size: 12px;
            }
        }

        /* Utility */
        .grid-cols-1 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }
        .grid-cols-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }
        .grid-cols-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        @media (max-width: 1024px) {
            .grid-cols-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-cols-2,
            .grid-cols-3 {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .grid-cols-1,
            .grid-cols-2,
            .grid-cols-3 {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        .more-btn-wrap {
            display: flex;
            justify-content: flex-end;
            margin-top: 20px;
        }
        @media (max-width: 520px) {
            .more-btn-wrap {
                justify-content: center;
            }
        }

        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }
        .section-head-row .left {
            flex: 1;
        }

/* roulang page: category5 */
:root {
            --brand: #2563EB;
            --brand-dark: #1E40AF;
            --brand-light: #3B82F6;
            --cyan: #06B6D4;
            --cyan-dark: #0E7490;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --ink: #1E293B;
            --muted: #64748B;
            --soft: #94A3B8;
            --border: #E2E8F0;
            --border-light: #EEF2F7;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-card: 0 1px 3px rgba(0,0,0,0.05), 0 4px 16px rgba(37,99,235,0.06);
            --shadow-card-hover: 0 2px 6px rgba(0,0,0,0.07), 0 12px 32px rgba(37,99,235,0.10);
            --shadow-hero: 0 8px 30px rgba(37,99,235,0.12);
            --transition: 300ms ease-out;
            --header-main-height: 48px;
            --header-channel-height: 40px;
            --header-shrunk-height: 56px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Inter', sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--ink);
            background-color: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 72px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), transform var(--transition);
        }
        a:hover {
            color: var(--brand);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        section {
            padding: 64px 0;
            position: relative;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-tint {
            background-color: #F1F5F9;
        }
        .section-cyanish {
            background: linear-gradient(180deg, #F8FAFC 0%, #F0F7FA 100%);
        }
        .brand-badge {
            display: inline-block;
            background-color: #EFF6FF;
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .section-tag {
            display: inline-block;
            color: var(--brand);
            font-size: 15px;
            font-weight: 650;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 17px;
            line-height: 1.7;
            color: var(--muted);
            max-width: 780px;
            margin-bottom: 32px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 650;
            font-size: 16px;
            line-height: 1.2;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            user-select: none;
        }
        .btn-primary {
            background-color: var(--brand);
            color: #FFFFFF;
            box-shadow: 0 2px 6px rgba(37,99,235,0.25);
        }
        .btn-primary:hover {
            background-color: var(--brand-dark);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: 0 6px 18px rgba(37,99,235,0.32);
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-secondary:hover {
            background-color: #F1F5F9;
            color: var(--brand-dark);
            border-color: var(--brand-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37,99,235,0.10);
        }
        .btn-ghost {
            background-color: transparent;
            color: var(--brand);
            border: 1px solid var(--border);
        }
        .btn-ghost:hover {
            background-color: #F8FAFC;
            border-color: var(--brand);
            color: var(--brand-dark);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }
        /* 导航样式 */
        .site-header {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 50;
            transition: all var(--transition);
        }
        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 48px;
            gap: 16px;
        }
        .header-channel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 40px;
            gap: 16px;
            border-top: 1px solid var(--border-light);
        }
        .header-shrunk-row {
            display: none;
            align-items: center;
            justify-content: space-between;
            height: 56px;
            gap: 16px;
        }
        .site-header.shrunk .header-brand-row {
            display: none;
        }
        .site-header.shrunk .header-channel-row {
            display: none;
        }
        .site-header.shrunk .header-shrunk-row {
            display: flex;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background-color: var(--brand);
            color: #FFFFFF;
            font-weight: 800;
            font-size: 16px;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--ink);
            letter-spacing: -0.2px;
            white-space: nowrap;
        }
        .logo-text .accent {
            color: var(--brand);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 550;
            color: var(--muted);
            padding: 4px 6px;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--brand);
        }
        .nav-link.active {
            color: var(--brand);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 6px;
            right: 6px;
            height: 2px;
            background-color: var(--brand);
            border-radius: 2px;
        }
        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border: none;
            background-color: transparent;
            color: var(--muted);
            font-size: 16px;
            border-radius: 8px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .search-toggle:hover {
            background-color: #F1F5F9;
            color: var(--brand);
        }
        .mobile-menu-btn {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border: none;
            background-color: transparent;
            color: var(--ink);
            font-size: 20px;
            border-radius: 8px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .mobile-menu-btn:hover {
            background-color: #F1F5F9;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: #FFFFFF;
            border-top: 1px solid var(--border-light);
            padding: 12px 0;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 10px 24px;
            font-size: 16px;
            display: block;
            width: 100%;
        }
        .mobile-nav .nav-link.active::after {
            display: none;
        }
        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--muted);
        }
        .breadcrumb a:hover {
            color: var(--brand);
        }
        .breadcrumb .separator {
            color: var(--soft);
        }
        .breadcrumb .current {
            color: var(--brand);
            font-weight: 600;
        }
        /* 卡片 */
        .card {
            background-color: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--brand);
        }
        .player-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .player-card .player-img {
            aspect-ratio: 16/9;
            object-fit: cover;
            width: 100%;
        }
        .player-card .player-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 10px;
        }
        .player-card .player-role {
            display: inline-block;
            font-size: 12px;
            font-weight: 650;
            color: var(--brand);
            background-color: #EFF6FF;
            padding: 3px 10px;
            border-radius: 999px;
            letter-spacing: 0.3px;
        }
        .player-card h3 {
            font-size: 19px;
            font-weight: 750;
            line-height: 1.35;
            color: var(--ink);
            margin: 0;
        }
        .player-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
            flex: 1;
            margin: 0;
        }
        .player-card .player-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--soft);
            flex-wrap: wrap;
        }
        .player-card .player-link {
            font-size: 14px;
            font-weight: 650;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }
        .player-card .player-link:hover {
            color: var(--brand-dark);
            transform: translateX(3px);
        }
        .list-card {
            display: flex;
            gap: 16px;
            padding: 16px;
            align-items: flex-start;
            background-color: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .list-card:hover {
            box-shadow: var(--shadow-card);
            border-color: var(--brand-light);
            transform: translateX(4px);
        }
        .list-card .list-img {
            width: 120px;
            height: 80px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .list-card .list-body {
            flex: 1;
            min-width: 0;
        }
        .list-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 4px;
            line-height: 1.35;
        }
        .list-card p {
            font-size: 13px;
            color: var(--muted);
            margin: 0 0 6px;
            line-height: 1.5;
        }
        .list-card .list-meta {
            font-size: 12px;
            color: var(--soft);
        }
        /* FAQ */
        .faq-card {
            background-color: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            padding: 24px;
            margin-bottom: 16px;
            transition: all var(--transition);
        }
        .faq-card:hover {
            border-color: var(--brand-light);
            box-shadow: var(--shadow-card-hover);
        }
        .faq-card .faq-question {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .faq-card .faq-question .faq-icon {
            color: var(--brand);
            font-weight: 800;
            flex-shrink: 0;
        }
        .faq-card .faq-answer {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--muted);
            line-height: 1.7;
        }
        .faq-card .faq-answer .faq-icon {
            color: var(--cyan);
            font-weight: 800;
            flex-shrink: 0;
        }
        /* 标签 */
        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 14px;
            background-color: #F1F5F9;
            color: var(--muted);
            font-size: 13px;
            font-weight: 550;
            border-radius: 999px;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .tag-pill:hover {
            background-color: #EFF6FF;
            color: var(--brand);
            border-color: var(--brand-light);
            transform: translateY(-2px);
        }
        /* 页脚 */
        .site-footer {
            background-color: #FFFFFF;
            border-top: 1px solid var(--border-light);
            padding: 40px 0 24px;
            margin-top: 32px;
        }
        .footer-brand-row {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .footer-brand-text {
            max-width: 420px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--muted);
            font-weight: 550;
        }
        .footer-links a:hover {
            color: var(--brand);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            align-items: center;
            font-size: 13px;
            color: var(--soft);
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
        }
        .footer-bottom a {
            color: var(--soft);
        }
        .footer-bottom a:hover {
            color: var(--brand);
        }
        /* 底部固定转化条 */
        .sticky-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: #FFFFFF;
            border-top: 1px solid var(--border-light);
            box-shadow: 0 -2px 12px rgba(37,99,235,0.08);
            z-index: 40;
            padding: 10px 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            min-height: 56px;
        }
        .sticky-cta-bar .sticky-text {
            font-size: 14px;
            color: var(--muted);
            font-weight: 550;
        }
        /* 响应式 */
        @media (max-width: 1024px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 28px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .desktop-nav {
                display: none;
            }
            .header-channel-row .search-toggle {
                display: none;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
            .header-brand-row {
                height: 52px;
            }
            .header-channel-row {
                display: none;
            }
            .site-header.shrunk .header-shrunk-row {
                display: flex;
            }
            .site-header.shrunk .header-brand-row {
                display: none;
            }
            .site-header.shrunk .header-channel-row {
                display: none;
            }
            .header-shrunk-row {
                display: none;
            }
            .site-header:not(.shrunk) .header-brand-row {
                display: flex;
            }
            .site-header:not(.shrunk) .header-channel-row {
                display: none;
            }
            .site-header:not(.shrunk) .mobile-nav {
                display: none;
            }
            .site-header:not(.shrunk) .mobile-nav.open {
                display: flex;
            }
            section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 15px;
            }
            .sticky-cta-bar {
                padding: 8px 16px;
                min-height: 56px;
                flex-wrap: wrap;
            }
            .sticky-cta-bar .sticky-text {
                font-size: 12px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
            section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 21px;
            }
            .section-desc {
                font-size: 14px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 15px;
            }
            .btn-sm {
                padding: 7px 14px;
                font-size: 13px;
            }
            .list-card {
                flex-direction: column;
            }
            .list-card .list-img {
                width: 100%;
                height: auto;
                aspect-ratio: 16/9;
            }
        }

/* roulang page: category6 */
:root {
            --brand: #2563EB;
            --brand-dark: #1E40AF;
            --brand-light: #3B82F6;
            --cyan: #06B6D4;
            --cyan-dark: #0E7490;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --ink: #1E293B;
            --muted: #64748B;
            --soft: #94A3B8;
            --border: #E2E8F0;
            --border-light: #EEF2F7;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 16px rgba(37, 99, 235, 0.06);
            --shadow-card-hover: 0 2px 6px rgba(0, 0, 0, 0.07), 0 12px 32px rgba(37, 99, 235, 0.10);
            --shadow-hero: 0 8px 30px rgba(37, 99, 235, 0.12);
            --transition: 300ms ease-out;
            --header-main-height: 48px;
            --header-channel-height: 40px;
            --header-shrunk-height: 56px;
            --hero-bg: #F8FAFC;
        }

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

        body {
            font-family: '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Inter', sans-serif;
            font-size: 16px;
            line-height: 1.6;
            color: var(--ink);
            background-color: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), transform var(--transition);
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 1024px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 12px;
                padding-right: 12px;
            }
        }

        section {
            padding: 56px 0;
            position: relative;
        }

        @media (max-width: 1024px) {
            section {
                padding: 44px 0;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 36px 0;
            }
        }

        @media (max-width: 520px) {
            section {
                padding: 28px 0;
            }
        }

        .section-alt {
            background-color: #FFFFFF;
        }

        .section-tint {
            background-color: #F1F5F9;
        }

        .section-cyanish {
            background: linear-gradient(180deg, #F8FAFC 0%, #F0F7FA 100%);
        }

        .brand-badge {
            display: inline-block;
            background-color: #EFF6FF;
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .section-tag {
            display: inline-block;
            color: var(--brand);
            font-size: 15px;
            font-weight: 650;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            text-transform: none;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 17px;
            line-height: 1.7;
            color: var(--muted);
            max-width: 780px;
            margin-bottom: 32px;
        }

        @media (max-width: 1024px) {
            .section-title {
                font-size: 25px;
            }
            .section-desc {
                font-size: 15px;
                margin-bottom: 24px;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 21px;
            }
            .section-desc {
                font-size: 14px;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 650;
            font-size: 16px;
            line-height: 1.2;
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
            user-select: none;
        }

        .btn-primary {
            background-color: var(--brand);
            color: #FFFFFF;
            box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
        }

        .btn-primary:hover {
            background-color: var(--brand-dark);
            color: #FFFFFF;
            transform: scale(1.02);
            box-shadow: 0 6px 18px rgba(37, 99, 235, 0.32);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            background-color: #FFFFFF;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }

        .btn-secondary:hover {
            background-color: #F1F5F9;
            color: var(--brand-dark);
            border-color: var(--brand-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.10);
        }

        .btn-ghost {
            background-color: transparent;
            color: var(--brand);
            border: 1px solid #E2E8F0;
        }

        .btn-ghost:hover {
            background-color: #F8FAFC;
            border-color: var(--brand);
            color: var(--brand-dark);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        /* Header Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #FFFFFF;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .header-brand-row {
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-light);
        }

        .header-channel-row {
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: opacity var(--transition), height var(--transition);
        }

        .header-shrunk-row {
            height: 0;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: space-between;
            opacity: 0;
            transition: height var(--transition), opacity var(--transition);
        }

        .site-header.is-shrunk .header-brand-row {
            display: none;
        }

        .site-header.is-shrunk .header-channel-row {
            height: 0;
            overflow: hidden;
            opacity: 0;
            pointer-events: none;
        }

        .site-header.is-shrunk .header-shrunk-row {
            height: 56px;
            opacity: 1;
            overflow: visible;
            pointer-events: auto;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--brand);
            color: #fff;
            font-weight: 800;
            font-size: 17px;
            border-radius: 8px;
            letter-spacing: -0.5px;
            transition: background var(--transition), transform var(--transition);
        }

        .logo-icon:hover {
            transform: scale(1.04);
            background: var(--brand-dark);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.3px;
            color: var(--ink);
            white-space: nowrap;
        }

        .logo-text .accent {
            color: var(--brand);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--ink);
            padding: 8px 14px;
            border-radius: 6px;
            position: relative;
            transition: color var(--transition), background var(--transition);
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
            transition: width var(--transition);
        }

        .nav-link:hover {
            color: var(--brand);
            background: #F1F5F9;
        }

        .nav-link:hover::after {
            width: 60%;
        }

        .nav-link.active {
            color: var(--brand);
            font-weight: 600;
            background: #EFF6FF;
        }

        .nav-link.active::after {
            width: 60%;
        }

        .search-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border: none;
            background: transparent;
            border-radius: 8px;
            cursor: pointer;
            color: var(--muted);
            font-size: 17px;
            transition: all var(--transition);
        }

        .search-toggle:hover {
            background: #F1F5F9;
            color: var(--brand);
        }

        .header-action a {
            font-size: 13px;
            font-weight: 500;
        }

        /* Mobile menu */
        .mobile-menu-burger {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            cursor: pointer;
            color: var(--ink);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }

        .mobile-menu-burger:hover {
            background: #F1F5F9;
            color: var(--brand);
        }

        .mobile-menu-drawer {
            display: none;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            padding: 8px 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease-out;
        }

        .mobile-menu-drawer.open {
            display: block;
            max-height: 400px;
        }

        .mobile-menu-drawer a {
            display: block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink);
            border-radius: 6px;
            margin: 2px 8px;
            transition: all var(--transition);
        }

        .mobile-menu-drawer a:hover,
        .mobile-menu-drawer a.active {
            background: #EFF6FF;
            color: var(--brand);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--brand);
            font-weight: 500;
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--brand-dark);
            text-decoration: underline;
        }

        .breadcrumb .separator {
            color: var(--soft);
            font-weight: 400;
        }

        .breadcrumb .current {
            color: var(--ink);
            font-weight: 600;
        }

        /* Category header */
        .category-header {
            padding: 32px 0 20px;
        }

        .category-header h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -0.5px;
            margin-bottom: 10px;
        }

        @media (max-width: 768px) {
            .category-header h1 {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .category-header h1 {
                font-size: 24px;
            }
        }

        .category-header .cat-desc {
            font-size: 17px;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.7;
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        .article-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--brand);
        }

        .article-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: #E2E8F0;
        }

        @media (max-width: 768px) {
            .article-card .card-img {
                height: 160px;
            }
        }

        .article-card .card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .article-card .card-tag {
            display: inline-block;
            background: #EFF6FF;
            color: var(--brand);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            letter-spacing: 0.2px;
        }

        .article-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            letter-spacing: -0.2px;
        }

        .article-card .card-title a:hover {
            color: var(--brand);
            text-decoration: underline;
        }

        .article-card .card-excerpt {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--soft);
            margin-top: 4px;
        }

        .article-card .card-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-card .card-meta .read-more {
            color: var(--brand);
            font-weight: 600;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition);
        }

        .article-card .card-meta .read-more:hover {
            color: var(--brand-dark);
            text-decoration: underline;
        }

        /* Popular recommendation */
        .pop-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        @media (max-width: 640px) {
            .pop-list {
                grid-template-columns: 1fr;
            }
        }

        .pop-item {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--card);
            border-radius: var(--radius);
            padding: 14px 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .pop-item:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .pop-item .pop-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: #EFF6FF;
            color: var(--brand);
            border-radius: 10px;
            font-size: 18px;
            flex-shrink: 0;
        }

        .pop-item .pop-text {
            flex: 1;
            min-width: 0;
        }

        .pop-item .pop-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .pop-item .pop-desc {
            font-size: 13px;
            color: var(--muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-top: 2px;
        }

        /* Tags */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-pill {
            display: inline-block;
            padding: 7px 16px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--muted);
            transition: all var(--transition);
            cursor: pointer;
        }

        .tag-pill:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: #EFF6FF;
            transform: translateY(-1px);
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.08);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: 20px 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card);
        }

        .faq-item .faq-q {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .faq-item .faq-q .q-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            background: var(--brand);
            color: #fff;
            border-radius: 50%;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .faq-item .faq-a {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.7;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding-left: 34px;
        }

        .faq-item .faq-a .a-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            background: var(--cyan);
            color: #fff;
            border-radius: 50%;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* Form */
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 520px;
            margin-top: 16px;
        }

        .subscribe-form input {
            flex: 1;
            padding: 12px 18px;
            border: 1.5px solid var(--border);
            border-radius: 10px;
            background: #F1F5F9;
            color: var(--ink);
            font-size: 15px;
            transition: border-color var(--transition), box-shadow var(--transition);
            min-width: 0;
        }

        .subscribe-form input::placeholder {
            color: var(--soft);
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #FFFFFF;
        }

        @media (max-width: 640px) {
            .subscribe-form {
                flex-direction: column;
                width: 100%;
            }
            .subscribe-form input {
                width: 100%;
            }
        }

        /* Guarantee bar */
        .guarantee-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            justify-content: space-between;
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 18px 24px;
            box-shadow: var(--shadow-sm);
        }

        @media (max-width: 768px) {
            .guarantee-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--muted);
        }

        .guarantee-item i {
            color: var(--cyan);
            font-size: 18px;
        }

        /* Next category */
        .next-cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        @media (max-width: 768px) {
            .next-cat-grid {
                grid-template-columns: 1fr;
            }
        }

        .next-cat-card {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--card);
            border-radius: var(--radius);
            padding: 18px 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .next-cat-card:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .next-cat-card .nc-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            background: #EFF6FF;
            color: var(--brand);
            border-radius: 12px;
            font-size: 20px;
            flex-shrink: 0;
        }

        .next-cat-card .nc-text .nc-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
        }

        .next-cat-card .nc-text .nc-desc {
            font-size: 13px;
            color: var(--muted);
            margin-top: 2px;
        }

        /* Footer */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border-light);
            padding: 40px 0 24px;
            margin-top: 40px;
        }

        .footer-brand-row {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 24px;
        }

        .footer-brand-text {
            max-width: 420px;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: var(--brand);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            font-size: 13px;
            color: var(--soft);
            border-top: 1px solid var(--border-light);
            padding-top: 20px;
        }

        .footer-bottom a {
            color: var(--muted);
            font-weight: 500;
        }

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

        /* More button */
        .view-more-wrap {
            display: flex;
            justify-content: center;
            margin-top: 28px;
        }

        .view-more-wrap .btn {
            border-radius: 999px;
            padding: 10px 28px;
        }

        /* List more */
        .list-more {
            display: flex;
            justify-content: center;
            margin-top: 20px;
        }

        /* Sticky bottom CTA */
        .sticky-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 40;
            background: #FFFFFF;
            border-top: 1px solid var(--border-light);
            box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.05);
            padding: 10px 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .sticky-cta .sticky-text {
            font-size: 14px;
            color: var(--muted);
            font-weight: 500;
        }

        .sticky-cta .btn {
            flex-shrink: 0;
        }

        @media (max-width: 640px) {
            .sticky-cta {
                padding: 8px 12px;
                flex-direction: row;
                align-items: center;
            }
            .sticky-cta .sticky-text {
                font-size: 12px;
                line-height: 1.3;
                flex: 1;
            }
            .sticky-cta .btn {
                padding: 8px 14px;
                font-size: 13px;
                white-space: nowrap;
            }
        }

        body.has-sticky-cta {
            padding-bottom: 64px;
        }

        @media (min-width: 641px) {
            body.has-sticky-cta {
                padding-bottom: 56px;
            }
        }

        /* List card with cover aligned left */
        .list-card-grid {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .list-card {
            display: flex;
            gap: 18px;
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            padding: 14px;
        }

        .list-card:hover {
            border-color: var(--brand);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .list-card .lc-img {
            width: 200px;
            height: 130px;
            object-fit: cover;
            border-radius: 8px;
            background: #E2E8F0;
            flex-shrink: 0;
        }

        .list-card .lc-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-width: 0;
        }

        .list-card .lc-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
        }

        .list-card .lc-excerpt {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .list-card .lc-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--soft);
            margin-top: auto;
        }

        @media (max-width: 640px) {
            .list-card {
                flex-direction: column;
                padding: 12px;
            }
            .list-card .lc-img {
                width: 100%;
                height: 160px;
            }
        }

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