/* roulang page: index */
:root {
            --color-primary: #0f172a;
            --color-secondary: #f43f5e;
            --color-accent: #38bdf8;
            --color-bg: #f8fafc;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-dark-bg: #0f172a;
            --color-dark-card: #1e293b;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: var(--transition);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 96px 0;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(244, 63, 94, 0.08);
            color: var(--color-secondary);
            border: 1px solid rgba(244, 63, 94, 0.18);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.3px;
            box-shadow: 0 8px 24px rgba(244, 63, 94, 0.35);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(244, 63, 94, 0.45);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(56, 189, 248, 0.6);
            outline-offset: 3px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: var(--color-dark-bg);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .btn-secondary:hover {
            background: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 9999px;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--color-border);
            transition: var(--transition);
        }

        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(244, 63, 94, 0.04);
            transform: translateY(-1px);
        }

        .card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.25);
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            padding: 8px 16px;
            border-radius: 9999px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(15, 23, 42, 0.04);
        }

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

        .nav-link.active:hover {
            color: #fff;
            background: #1e293b;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-card);
            transition: var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .step-connector {
            width: 2px;
            height: 40px;
            background: linear-gradient(to bottom, var(--color-secondary), var(--color-accent));
            margin: 0 auto;
        }

        .progress-bar-fill {
            transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .screenshot-carousel {
            scroll-behavior: smooth;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .screenshot-carousel::-webkit-scrollbar {
            display: none;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.98);
            z-index: 50;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }

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

        .mobile-menu a {
            color: #fff;
            font-size: 20px;
            font-weight: 500;
            padding: 12px 24px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        @media (max-width: 1024px) {
            .section-padding {
                padding: 64px 0;
            }
            .container {
                padding: 0 20px;
            }
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .section-padding {
                padding: 48px 0;
            }
            .container {
                padding: 0 16px;
            }
            .hero-content {
                text-align: center;
            }
            .grid-cols-2-mobile {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .btn-primary,
            .btn-secondary {
                padding: 12px 24px;
                font-size: 14px;
            }
            .section-padding {
                padding: 36px 0;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #0f172a;
            --color-secondary: #f43f5e;
            --color-accent: #38bdf8;
            --color-bg: #f8fafc;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-dark-bg: #0f172a;
            --color-dark-card: #1e293b;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: var(--transition);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 96px 0;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(244, 63, 94, 0.08);
            color: var(--color-secondary);
            border: 1px solid rgba(244, 63, 94, 0.18);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.3px;
            box-shadow: 0 8px 24px rgba(244, 63, 94, 0.35);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(244, 63, 94, 0.45);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(56, 189, 248, 0.6);
            outline-offset: 3px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: var(--color-dark-bg);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .btn-secondary:hover {
            background: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 9999px;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--color-border);
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(244, 63, 94, 0.04);
            transform: translateY(-1px);
        }
        .card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.25);
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            padding: 8px 16px;
            border-radius: 9999px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(15, 23, 42, 0.04);
        }
        .nav-link.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active:hover {
            color: #fff;
            background: #1e293b;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-card);
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.98);
            z-index: 50;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 20px;
            padding: 40px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 20px;
            font-weight: 500;
            color: #fff;
            transition: var(--transition);
        }
        .mobile-menu a:hover {
            color: var(--color-accent);
        }
        .mobile-menu a.active {
            color: var(--color-secondary);
            font-weight: 700;
        }
        .desktop-nav {
            display: flex;
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .section-padding {
                padding: 64px 0;
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
            .container {
                padding: 0 16px;
            }
        }
        @media (min-width: 1025px) {
            .mobile-menu,
            #mobileMenuToggle {
                display: none !important;
            }
        }
        .hero-cover {
            position: relative;
            isolation: isolate;
            overflow: hidden;
        }
        .hero-cover::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.65) 50%, rgba(15, 23, 42, 0.35) 100%);
            z-index: 1;
        }
        .hero-cover > * {
            position: relative;
            z-index: 2;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(56, 189, 248, 0.3);
            transform: translateY(-3px);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }
        .process-step {
            position: relative;
            padding-left: 52px;
        }
        .process-step::before {
            content: attr(data-step);
            position: absolute;
            left: 0;
            top: 0;
            width: 36px;
            height: 36px;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f43f5e, #38bdf8);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--color-secondary);
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            font-size: 18px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-top: 16px;
            max-width: 720px;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 28px;
            }
            .section-subtitle {
                font-size: 16px;
            }
        }
        .img-cover-full {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .plan-card {
            position: relative;
            background: var(--color-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            padding: 32px;
            transition: var(--transition);
            overflow: hidden;
        }
        .plan-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(244, 63, 94, 0.3);
        }
        .plan-card.featured {
            background: linear-gradient(160deg, #0f172a 0%, #1e293b 100%);
            border-color: rgba(244, 63, 94, 0.3);
            color: #fff;
        }
        .plan-card.featured .section-subtitle,
        .plan-card.featured .text-slate-500 {
            color: #94a3b8 !important;
        }

.mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(15, 23, 42, 0.98);
            z-index: 50;
            flex-direction: column;
            gap: 20px;
            padding: 80px 24px 40px;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 18px;
            font-weight: 500;
            color: #cbd5e1;
            padding: 12px 16px;
            border-radius: 12px;
            transition: all 0.2s;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(244, 63, 94, 0.2);
            color: #fff;
        }
        .faq-question i {
            transition: transform 0.3s;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-secondary);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }
        .process-step {
            position: relative;
            padding: 32px;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .process-step::before {
            content: attr(data-step);
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 56px;
            font-weight: 800;
            color: rgba(15, 23, 42, 0.04);
            line-height: 1;
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 40px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0f172a;
            --color-secondary: #f43f5e;
            --color-accent: #38bdf8;
            --color-bg: #f8fafc;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-dark-bg: #0f172a;
            --color-dark-card: #1e293b;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: var(--transition);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 96px 0;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(244, 63, 94, 0.08);
            color: var(--color-secondary);
            border: 1px solid rgba(244, 63, 94, 0.18);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.3px;
            box-shadow: 0 8px 24px rgba(244, 63, 94, 0.35);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(244, 63, 94, 0.45);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(56, 189, 248, 0.6);
            outline-offset: 3px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: var(--color-dark-bg);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .btn-secondary:hover {
            background: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 9999px;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--color-border);
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(244, 63, 94, 0.04);
            transform: translateY(-1px);
        }
        .card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.25);
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            padding: 8px 16px;
            border-radius: 9999px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(15, 23, 42, 0.04);
        }
        .nav-link.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active:hover {
            color: #fff;
            background: #1e293b;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-card);
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 300px;
            background: var(--color-dark-bg);
            z-index: 60;
            padding: 88px 24px 24px;
            flex-direction: column;
            gap: 6px;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.2);
            transform: translateX(100%);
            transition: transform 0.3s ease;
        }
        .mobile-menu.open {
            transform: translateX(0);
        }
        .mobile-menu a {
            color: #cbd5e1;
            font-size: 16px;
            font-weight: 500;
            padding: 12px 16px;
            border-radius: 10px;
            transition: var(--transition);
        }
        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .mobile-menu a.active {
            background: var(--color-secondary);
            color: #fff;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu {
                display: flex;
            }
        }
        .hero-banner {
            background-image: linear-gradient(rgba(15, 23, 42, 0.82), rgba(15, 23, 42, 0.88)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .hero-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(244, 63, 94, 0.5), transparent);
        }
        .section-heading {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.5px;
            line-height: 1.25;
        }
        .section-sub {
            font-size: 1.125rem;
            color: var(--color-muted);
            max-width: 720px;
            margin-top: 12px;
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .stat-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(56, 189, 248, 0.3);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-secondary);
            line-height: 1;
        }
        .process-step {
            position: relative;
            padding-left: 56px;
            padding-bottom: 32px;
        }
        .process-step:last-child {
            padding-bottom: 0;
        }
        .process-step::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 44px;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
        }
        .process-step:last-child::before {
            display: none;
        }
        .process-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 14px rgba(244, 63, 94, 0.3);
        }
        .case-card {
            background: var(--color-dark-card);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            padding: 28px;
            color: #cbd5e1;
            transition: var(--transition);
        }
        .case-card:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .case-card h3 {
            color: #fff;
            font-weight: 600;
            font-size: 1.25rem;
            margin-bottom: 12px;
        }
        .footer-link {
            color: #94a3b8;
            transition: var(--transition);
        }
        .footer-link:hover {
            color: #fff;
        }
        .section-alt {
            background: var(--color-dark-bg);
            color: #cbd5e1;
        }
        .section-alt .section-heading {
            color: #fff;
        }
        .section-alt .section-sub {
            color: #94a3b8;
        }

/* 补充 mobile menu 样式 */
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(15, 23, 42, 0.98);
            padding: 20px 24px;
            flex-direction: column;
            gap: 12px;
            z-index: 50;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            backdrop-filter: blur(8px);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            color: #e2e8f0;
            font-size: 15px;
            font-weight: 500;
            padding: 10px 16px;
            border-radius: 12px;
            transition: all 0.3s ease;
        }
        .mobile-menu a:hover {
            background: rgba(255,255,255,0.08);
            color: #fff;
        }
        .mobile-menu a.active {
            background: rgba(244, 63, 94, 0.15);
            color: #fda4af;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
        }

/* roulang page: category5 */
:root {
            --color-primary: #0f172a;
            --color-secondary: #f43f5e;
            --color-accent: #38bdf8;
            --color-bg: #f8fafc;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-dark-bg: #0f172a;
            --color-dark-card: #1e293b;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: var(--transition);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 96px 0;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(244, 63, 94, 0.08);
            color: var(--color-secondary);
            border: 1px solid rgba(244, 63, 94, 0.18);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.3px;
            box-shadow: 0 8px 24px rgba(244, 63, 94, 0.35);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(244, 63, 94, 0.45);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(56, 189, 248, 0.6);
            outline-offset: 3px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: var(--color-dark-bg);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .btn-secondary:hover {
            background: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 9999px;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--color-border);
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(244, 63, 94, 0.04);
            transform: translateY(-1px);
        }
        .card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.25);
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            padding: 8px 16px;
            border-radius: 9999px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(15, 23, 42, 0.04);
        }
        .nav-link.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active:hover {
            color: #fff;
            background: #1e293b;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-card);
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.98);
            z-index: 50;
            padding: 24px;
            flex-direction: column;
            gap: 16px;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            color: #fff;
            font-size: 18px;
            font-weight: 500;
            padding: 12px 16px;
            border-radius: 12px;
        }
        .mobile-menu a.active {
            background: rgba(244, 63, 94, 0.2);
            color: #fff;
        }
        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .hero-video-bg {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
        }
        .hero-video-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.85), rgba(15,23,42,0.7));
        }
        .hero-content {
            position: relative;
            z-index: 1;
            color: #fff;
        }
        .play-btn {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(8px);
            border: 2px solid rgba(255,255,255,0.4);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 32px;
            transition: var(--transition);
        }
        .play-btn:hover {
            background: rgba(255,255,255,0.3);
            transform: scale(1.05);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, #f43f5e, #38bdf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .timeline-item {
            position: relative;
            padding-left: 40px;
            margin-bottom: 32px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 8px;
            width: 4px;
            height: calc(100% - 16px);
            background: var(--color-border);
            border-radius: 2px;
        }
        .timeline-item:last-child::before {
            display: none;
        }
        .timeline-dot {
            position: absolute;
            left: 0;
            top: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-card);
            border: 2px solid var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-weight: 700;
            font-size: 14px;
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
        }
        @media (min-width: 1025px) {
            .mobile-toggle {
                display: none;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #0f172a;
            --color-secondary: #f43f5e;
            --color-accent: #38bdf8;
            --color-bg: #f8fafc;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-dark-bg: #0f172a;
            --color-dark-card: #1e293b;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: var(--transition);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 96px 0;
        }
        .section-padding-sm {
            padding: 64px 0;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(244, 63, 94, 0.08);
            color: var(--color-secondary);
            border: 1px solid rgba(244, 63, 94, 0.18);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.3px;
            box-shadow: 0 8px 24px rgba(244, 63, 94, 0.35);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(244, 63, 94, 0.45);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(56, 189, 248, 0.6);
            outline-offset: 3px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: var(--color-dark-bg);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .btn-secondary:hover {
            background: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 9999px;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--color-border);
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(244, 63, 94, 0.04);
            transform: translateY(-1px);
        }
        .card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.25);
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            padding: 8px 16px;
            border-radius: 9999px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(15, 23, 42, 0.04);
        }
        .nav-link.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active:hover {
            color: #fff;
            background: #1e293b;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-card);
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            z-index: 50;
            background: rgba(15, 23, 42, 0.98);
            padding: 100px 24px 40px;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 14px 20px;
            border-radius: 12px;
            font-size: 17px;
            font-weight: 500;
            color: #e2e8f0;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(244, 63, 94, 0.2);
            border-color: rgba(244, 63, 94, 0.3);
            color: #fff;
        }
        .countdown-box {
            display: flex;
            gap: 12px;
            align-items: center;
            flex-wrap: wrap;
        }
        .countdown-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 12px 18px;
            text-align: center;
            min-width: 70px;
            backdrop-filter: blur(12px);
        }
        .countdown-item .number {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            display: block;
        }
        .countdown-item .label {
            font-size: 12px;
            color: #94a3b8;
            font-weight: 500;
            letter-spacing: 1px;
        }
        .timeline-item {
            position: relative;
            padding-left: 36px;
            padding-bottom: 32px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 28px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, #f43f5e, #38bdf8);
            border-radius: 2px;
        }
        .timeline-item:last-child::before {
            display: none;
        }
        .timeline-item .dot {
            position: absolute;
            left: 4px;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f43f5e, #38bdf8);
            border: 3px solid #fff;
            box-shadow: 0 2px 8px rgba(244, 63, 94, 0.35);
        }
        .stat-number {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.1;
            background: linear-gradient(135deg, #f43f5e, #38bdf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-cover-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 24px 64px rgba(15, 23, 42, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .live-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(244, 63, 94, 0.9);
            color: #fff;
            padding: 6px 14px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.5px;
            backdrop-filter: blur(8px);
        }
        .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #fff;
            animation: pulse-dot 1.2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }
        .glass-panel {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
        }
        .module-card {
            position: relative;
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            padding: 28px;
            transition: var(--transition);
            overflow: hidden;
        }
        .module-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #f43f5e, #38bdf8);
            opacity: 0;
            transition: var(--transition);
        }
        .module-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.25);
        }
        .module-card:hover::before {
            opacity: 1;
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(244, 63, 94, 0.3);
        }
        .dark-section {
            background: var(--color-dark-bg);
            color: #e2e8f0;
        }
        .dark-section .card,
        .dark-section .module-card {
            background: var(--color-dark-card);
            border-color: rgba(255, 255, 255, 0.08);
            color: #e2e8f0;
        }
        .dark-section .module-card:hover {
            border-color: rgba(56, 189, 248, 0.3);
        }
        .dark-section .text-slate-500,
        .dark-section .text-slate-600 {
            color: #94a3b8 !important;
        }
        .dark-section h2,
        .dark-section h3,
        .dark-section h4 {
            color: #fff;
        }
        .coach-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f43f5e, #38bdf8);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: #fff;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(244, 63, 94, 0.3);
            flex-shrink: 0;
        }
        .gradient-border {
            position: relative;
            border-radius: var(--radius-lg);
            padding: 2px;
            background: linear-gradient(135deg, #f43f5e, #38bdf8);
        }
        .gradient-border-inner {
            background: var(--color-card);
            border-radius: calc(var(--radius-lg) - 2px);
            padding: 32px;
            height: 100%;
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none !important;
            }
            .section-padding {
                padding: 64px 0;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-padding-sm {
                padding: 40px 0;
            }
            .countdown-item {
                padding: 10px 14px;
                min-width: 56px;
            }
            .countdown-item .number {
                font-size: 24px;
            }
            .stat-number {
                font-size: 36px;
            }
        }
        @media (max-width: 520px) {
            .btn-primary,
            .btn-secondary,
            .btn-outline {
                padding: 12px 24px;
                font-size: 14px;
            }
            .countdown-box {
                gap: 8px;
            }
            .countdown-item {
                padding: 8px 10px;
                min-width: 48px;
            }
            .countdown-item .number {
                font-size: 20px;
            }
            .hero-cover-wrap {
                border-radius: var(--radius-md);
            }
        }
        .focus-ring:focus-visible {
            outline: 3px solid rgba(56, 189, 248, 0.6);
            outline-offset: 3px;
            border-radius: 8px;
        }
        .skip-link {
            position: absolute;
            left: -9999px;
            top: 0;
            background: var(--color-primary);
            color: #fff;
            padding: 12px 20px;
            border-radius: 0 0 8px 0;
            z-index: 100;
        }
        .skip-link:focus {
            left: 0;
        }
        .selection-highlight::selection {
            background: rgba(244, 63, 94, 0.2);
            color: var(--color-primary);
        }

/* roulang page: category4 */
:root {
            --color-primary: #0f172a;
            --color-secondary: #f43f5e;
            --color-accent: #38bdf8;
            --color-bg: #f8fafc;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-dark-bg: #0f172a;
            --color-dark-card: #1e293b;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: var(--transition);
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 96px 0;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(244, 63, 94, 0.08);
            color: var(--color-secondary);
            border: 1px solid rgba(244, 63, 94, 0.18);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.3px;
            box-shadow: 0 8px 24px rgba(244, 63, 94, 0.35);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(244, 63, 94, 0.45);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(56, 189, 248, 0.6);
            outline-offset: 3px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: var(--color-dark-bg);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .btn-secondary:hover {
            background: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 9999px;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--color-border);
            transition: var(--transition);
        }

        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(244, 63, 94, 0.04);
            transform: translateY(-1px);
        }

        .card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.25);
        }

        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            padding: 8px 16px;
            border-radius: 9999px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(15, 23, 42, 0.04);
        }

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

        .nav-link.active:hover {
            color: #fff;
            background: #1e293b;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-card);
            transition: var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.98);
            z-index: 50;
            padding: 96px 24px 40px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

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

        .mobile-menu a {
            display: block;
            padding: 14px 20px;
            border-radius: 12px;
            color: #e2e8f0;
            font-size: 17px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.04);
        }

        .mobile-menu a:hover {
            background: rgba(244, 63, 94, 0.12);
            color: #fff;
            border-color: rgba(244, 63, 94, 0.3);
        }

        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .section-padding {
                padding: 64px 0;
            }
        }

        @media (min-width: 1025px) {
            .desktop-nav {
                display: flex;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
            .container {
                padding: 0 16px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 32px !important;
                line-height: 1.2 !important;
            }
            .hero-subtitle {
                font-size: 16px !important;
            }
        }

        .hero-title {
            font-size: 52px;
            line-height: 1.15;
            font-weight: 800;
            letter-spacing: -1px;
        }

        .hero-subtitle {
            font-size: 18px;
            line-height: 1.8;
            color: var(--color-muted);
        }

        .stat-number {
            font-size: 40px;
            font-weight: 800;
            line-height: 1;
            letter-spacing: -1px;
        }

        .process-step {
            position: relative;
            padding-left: 48px;
            padding-bottom: 32px;
            border-left: 2px solid var(--color-border);
        }

        .process-step:last-child {
            border-left-color: transparent;
            padding-bottom: 0;
        }

        .process-step::before {
            content: attr(data-step);
            position: absolute;
            left: -20px;
            top: 0;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(244, 63, 94, 0.3);
        }

        .pricing-card {
            position: relative;
            transition: var(--transition);
        }

        .pricing-card.featured {
            border: 2px solid var(--color-secondary);
            box-shadow: 0 16px 48px rgba(244, 63, 94, 0.15);
        }

        .pricing-card.featured::before {
            content: '推荐方案';
            position: absolute;
            top: 16px;
            right: -1px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 9999px 0 0 9999px;
            letter-spacing: 0.5px;
        }

/* roulang page: category2 */
:root {
            --color-primary: #0f172a;
            --color-secondary: #f43f5e;
            --color-accent: #38bdf8;
            --color-bg: #f8fafc;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --color-dark-bg: #0f172a;
            --color-dark-card: #1e293b;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: var(--transition);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 96px 0;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(244, 63, 94, 0.08);
            color: var(--color-secondary);
            border: 1px solid rgba(244, 63, 94, 0.18);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f43f5e, #e11d48);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 0.3px;
            box-shadow: 0 8px 24px rgba(244, 63, 94, 0.35);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(244, 63, 94, 0.45);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(56, 189, 248, 0.6);
            outline-offset: 3px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            background: var(--color-dark-bg);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .btn-secondary:hover {
            background: #1e293b;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 9999px;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--color-border);
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            background: rgba(244, 63, 94, 0.04);
            transform: translateY(-1px);
        }
        .card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.25);
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            padding: 8px 16px;
            border-radius: 9999px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(15, 23, 42, 0.04);
        }
        .nav-link.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active:hover {
            color: #fff;
            background: #1e293b;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            background: var(--color-card);
            transition: var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
            box-shadow: var(--shadow-sm);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.98);
            z-index: 50;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            padding: 48px 24px;
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            padding: 12px 20px;
            border-radius: 12px;
            transition: var(--transition);
            text-align: center;
            width: 100%;
            max-width: 320px;
        }
        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .mobile-menu a.active {
            color: var(--color-accent);
            background: rgba(56, 189, 248, 0.15);
        }
        .progress-ring {
            transform: rotate(-90deg);
        }
        .progress-ring circle {
            transition: stroke-dashoffset 0.8s ease;
        }
        .tier-card-highlight {
            background: linear-gradient(145deg, #fff 0%, #fef2f2 100%);
            border-color: rgba(244, 63, 94, 0.35);
            box-shadow: 0 12px 40px rgba(244, 63, 94, 0.15);
        }
        .marquee-track {
            animation: marquee 30s linear infinite;
        }
        @keyframes marquee {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .section-padding {
                padding: 64px 0;
            }
            .container {
                padding: 0 16px;
            }
        }
        @media (min-width: 769px) {
            .md\:hidden {
                display: none !important;
            }
        }

/* 追加细节样式，覆盖CDN默认 */
        .fa-chevron-down {
            transition: transform 0.3s ease;
        }
        .fa-chevron-down.rotate-180 {
            transform: rotate(180deg);
        }
        .marquee-track {
            animation: marquee 25s linear infinite;
        }
        @keyframes marquee {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }
        .fade-up {
            opacity: 0;
            animation: fadeUp 0.8s ease forwards;
        }
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-up:nth-child(1) { animation-delay: 0.1s; }
        .fade-up:nth-child(2) { animation-delay: 0.2s; }
        .fade-up:nth-child(3) { animation-delay: 0.3s; }
        .fade-up:nth-child(4) { animation-delay: 0.4s; }
        .fade-up:nth-child(5) { animation-delay: 0.5s; }
        .fade-up:nth-child(6) { animation-delay: 0.6s; }
        .fade-up:nth-child(7) { animation-delay: 0.7s; }
        .fade-up:nth-child(8) { animation-delay: 0.8s; }
        .fade-up:nth-child(9) { animation-delay: 0.9s; }
        .fade-up:nth-child(10) { animation-delay: 1.0s; }