/* roulang page: index */
:root {
            --bg-ink: #0B0F15;
            --bg-surface: #131D27;
            --bg-elevated: #1C2935;
            --bg-footer: #080C11;
            --brand: #E63946;
            --brand-hover: #FF5A5F;
            --accent: #4CC9F0;
            --text-primary: #F2F4F8;
            --text-secondary: #98A6B3;
            --text-weak: #5B6B7B;
            --border: rgba(255, 255, 255, 0.07);
            --radius-btn: 8px;
            --radius-card: 12px;
            --radius-img: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 12px 32px -10px rgba(230, 57, 70, 0.45);
            --transition: all .2s cubic-bezier(.22, .61, .36, 1);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-num: 'Inter', 'DIN Alternate', 'Bahnschrift', system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-ink);
            color: var(--text-primary);
            font-family: var(--font-sans);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius-img);
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }

        .section {
            padding: 80px 0;
        }

        .section-title {
            font-size: clamp(1.6rem, 2.5vw, 2rem);
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }

        .section-sub {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-secondary);
            max-width: 640px;
        }

        .text-gradient-red {
            background: linear-gradient(135deg, #FF5A5F 0%, #E63946 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 4px 24px rgba(230, 57, 70, 0.35);
        }

        .btn-primary:hover {
            background: var(--brand-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(230, 57, 70, 0.5);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(230, 57, 70, 0.3);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.6);
            color: #F2F4F8;
        }

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

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

        .btn-dark {
            background: #0B0F15;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-dark:hover {
            background: #1C2935;
            border-color: var(--brand);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.4;
        }

        .badge-red {
            background: rgba(230, 57, 70, 0.15);
            color: #FF5A5F;
            border: 1px solid rgba(230, 57, 70, 0.3);
        }

        .badge-blue {
            background: rgba(76, 201, 240, 0.1);
            color: var(--accent);
            border: 1px solid rgba(76, 201, 240, 0.25);
        }

        .card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: var(--transition);
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
            border-color: rgba(230, 57, 70, 0.3);
        }

        .glass-nav {
            background: rgba(11, 15, 21, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(rgba(230, 57, 70, 0.12), transparent);
            background-size: 100% 1px;
            background-repeat: no-repeat;
        }

        .nav-topline {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--brand), transparent);
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
        }

        .nav-link {
            position: relative;
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .nav-link.active {
            color: #F2F4F8;
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--brand);
            box-shadow: 0 0 8px rgba(230, 57, 70, 0.8);
        }

        .hero-bg {
            background: linear-gradient(0deg, rgba(11, 15, 21, 0.92) 0%, rgba(11, 15, 21, 0.55) 50%, rgba(230, 57, 70, 0.15) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            position: relative;
        }

        .hero-content {
            animation: heroUp 0.6s cubic-bezier(.22, .61, .36, 1) both;
        }

        @keyframes heroUp {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .stat-number {
            font-family: var(--font-num);
            font-size: clamp(2rem, 3vw, 2.6rem);
            font-weight: 700;
            color: var(--accent);
            text-shadow: 0 0 20px rgba(76, 201, 240, 0.4);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
            letter-spacing: 0.05em;
        }

        .glow-line {
            width: 64px;
            height: 3px;
            background: linear-gradient(90deg, var(--brand), transparent);
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .faq-toggle:checked~.faq-answer {
            max-height: 300px;
            padding-top: 8px;
        }

        .faq-toggle:checked~.faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-toggle {
            position: absolute;
            opacity: 0;
            width: 100%;
            height: 100%;
            cursor: pointer;
            z-index: 1;
            top: 0;
            left: 0;
        }

        .faq-item {
            position: relative;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
            font-size: 15px;
        }

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

        .faq-icon {
            transition: transform 0.3s ease;
            color: var(--text-weak);
            font-size: 14px;
            flex-shrink: 0;
            margin-left: 16px;
        }

        .footer {
            background: var(--bg-footer);
            border-top: 1px solid linear-gradient(90deg, transparent, var(--brand), transparent);
            padding: 48px 0 24px;
            position: relative;
        }

        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--brand), transparent);
            opacity: 0.6;
        }

        .footer-link {
            color: var(--text-secondary);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .news-item {
            display: flex;
            gap: 16px;
            padding: 16px;
            border-radius: var(--radius-card);
            background: var(--bg-surface);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .news-item:hover {
            background: var(--bg-elevated);
            border-color: rgba(230, 57, 70, 0.25);
            transform: translateX(4px);
        }

        .news-thumb {
            width: 96px;
            height: 96px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-elevated);
        }

        .news-title {
            color: var(--text-primary);
            font-weight: 600;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }

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

        .news-excerpt {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-top: 4px;
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 8px;
            flex-wrap: wrap;
        }

        .news-meta .date {
            color: var(--accent);
            font-size: 12px;
        }

        .news-meta .category {
            color: #FF5A5F;
            background: rgba(230, 57, 70, 0.12);
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 11px;
        }

        .empty-state {
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 48px 24px;
            text-align: center;
            color: var(--text-weak);
            font-size: 14px;
            background: rgba(255, 255, 255, 0.02);
        }

        .pricing-card {
            background: var(--bg-surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            transition: var(--transition);
            position: relative;
        }

        .pricing-card:hover {
            border-color: rgba(230, 57, 70, 0.3);
            transform: translateY(-4px);
        }

        .pricing-card.featured {
            background: var(--bg-elevated);
            border: 1px solid var(--brand);
            box-shadow: 0 0 40px rgba(230, 57, 70, 0.2);
        }

        .pricing-card.featured::before {
            content: '最受欢迎';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--brand);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 999px;
            letter-spacing: 0.05em;
            white-space: nowrap;
        }

        .price-amount {
            font-family: var(--font-num);
            font-size: 2.5rem;
            font-weight: 700;
            color: #F2F4F8;
            line-height: 1.2;
        }

        .price-period {
            font-size: 13px;
            color: var(--text-weak);
        }

        .feature-list {
            list-style: none;
            margin-top: 16px;
        }

        .feature-list li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .feature-list li i {
            color: var(--accent);
            font-size: 13px;
            margin-top: 4px;
        }

        .cta-section {
            background: linear-gradient(120deg, #E63946 0%, #8f1d26 100%);
            border-radius: var(--radius-img);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            filter: blur(60px);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60%;
            left: -10%;
            width: 240px;
            height: 240px;
            background: rgba(76, 201, 240, 0.1);
            border-radius: 50%;
            filter: blur(50px);
        }

        .input-field {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-btn);
            padding: 12px 20px;
            color: #F2F4F8;
            font-size: 14px;
            width: 100%;
            transition: var(--transition);
        }

        .input-field::placeholder {
            color: var(--text-weak);
        }

        .input-field:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.25);
            background: rgba(255, 255, 255, 0.08);
        }

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

            .news-thumb {
                width: 80px;
                height: 80px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-ink);
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                padding: 16px 24px;
                gap: 0;
            }

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

            .nav-menu a {
                padding: 14px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }

            .news-thumb {
                width: 72px;
                height: 72px;
            }

            .news-item {
                padding: 12px;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }

            .section {
                padding: 40px 0;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .card {
                padding: 16px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }

            html {
                scroll-behavior: auto;
            }
        }

        .feature-grid-main {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 24px;
        }

        .feature-grid-sub {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: 24px;
        }

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

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

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

        .pricing-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
            align-items: stretch;
        }

        @media (max-width: 1024px) {
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
        }

        .related-scroll {
            display: flex;
            overflow-x: auto;
            gap: 24px;
            padding-bottom: 12px;
            scroll-snap-type: x mandatory;
        }

        .related-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .related-scroll::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 999px;
        }

        .related-scroll::-webkit-scrollbar-track {
            background: transparent;
        }

        @media (prefers-reduced-motion: no-preference) {
            .stat-number {
                animation: statPulse 2s ease-in-out infinite;
            }
        }

        @keyframes statPulse {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.02);
            }
        }

/* roulang page: category1 */
:root {
    --bg-ink: #0B0F15;
    --surface: #131D27;
    --elevated: #1C2935;
    --brand: #E63946;
    --brand-hover: #FF5A5F;
    --accent: #4CC9F0;
    --text-main: #F2F4F8;
    --text-sub: #98A6B3;
    --text-weak: #5B6B7B;
    --border: rgba(255,255,255,0.07);
    --radius-card: 12px;
    --radius-img: 16px;
    --shadow-card: 0 2px 16px rgba(0,0,0,0.25);
    --shadow-glow: 0 12px 32px -10px rgba(230,57,70,0.45);
    --transition: all .2s cubic-bezier(.22,.61,.36,1);
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Inter", sans-serif;
    background: var(--bg-ink);
    color: var(--text-main);
    line-height: 1.75;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}
button, input {
    font-family: inherit;
    font-size: inherit;
    border: none;
    background: none;
    color: inherit;
    cursor: pointer;
}
ul, ol {
    list-style: none;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}
.section {
    padding: 88px 0;
}
.section-head {
    max-width: 640px;
    margin-bottom: 48px;
}
.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}
.section-title {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
}
.section-sub {
    color: var(--text-sub);
    font-size: 15px;
    margin-top: 12px;
}
.text-brand {
    color: var(--brand);
}
.text-accent {
    color: var(--accent);
}
.text-sub {
    color: var(--text-sub);
}
.text-weak {
    color: var(--text-weak);
}
.glass-nav {
    background: rgba(11, 15, 21, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.nav-topline {
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(230,57,70,0.8), transparent);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
}
.nav-menu {
    gap: 36px;
}
.nav-link {
    position: relative;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-sub);
    padding: 6px 2px;
    transition: var(--transition);
}
.nav-link::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 100%;
    height: 2px;
    background: var(--brand);
    border-radius: 2px;
    transition: var(--transition);
}
.nav-link:hover {
    color: var(--text-main);
}
.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}
.nav-link.active {
    color: #fff;
    text-shadow: 0 0 12px rgba(230,57,70,0.6);
}
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
    background: var(--brand);
    box-shadow: 0 0 10px rgba(230,57,70,0.8);
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 8px;
    font-weight: 600;
    padding: 12px 24px;
    transition: var(--transition);
    white-space: nowrap;
    line-height: 1.4;
}
.btn:hover {
    transform: translateY(-1px);
}
.btn:active {
    transform: translateY(0);
}
.btn:focus-visible {
    outline: 2px solid rgba(230,57,70,0.5);
    outline-offset: 3px;
}
.btn-primary {
    background: var(--brand);
    color: #fff;
    box-shadow: 0 4px 20px rgba(230,57,70,0.35);
}
.btn-primary:hover {
    background: var(--brand-hover);
    box-shadow: 0 8px 30px rgba(230,57,70,0.5);
}
.btn-outline {
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff;
    background: transparent;
}
.btn-outline:hover {
    border-color: var(--brand);
    color: var(--brand);
}
.btn-light {
    background: #fff;
    color: var(--bg-ink);
    font-weight: 700;
}
.btn-light:hover {
    background: rgba(255,255,255,0.9);
}
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 999px;
    line-height: 1.5;
}
.badge-red {
    background: rgba(230,57,70,0.15);
    color: #FF5A5F;
    border: 1px solid rgba(230,57,70,0.3);
}
.badge-accent {
    background: rgba(76,201,240,0.1);
    color: var(--accent);
    border: 1px solid rgba(76,201,240,0.25);
}
.card {
    background: var(--surface);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-card);
    transition: var(--transition);
}
.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(230,57,70,0.35);
}
.hero-banner {
    position: relative;
    padding: 148px 0 80px;
    background: linear-gradient(to bottom, rgba(11,15,21,0.6), rgba(11,15,21,0.92)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    overflow: hidden;
}
.hero-banner::before {
    content: "";
    position: absolute;
    top: -30%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: rgba(230,57,70,0.18);
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-weak);
    margin-bottom: 18px;
}
.breadcrumb a:hover {
    color: var(--brand);
}
.breadcrumb i {
    font-size: 10px;
    color: var(--text-weak);
}
.hero-title {
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 18px;
}
.hero-sub {
    font-size: 18px;
    color: var(--text-sub);
    max-width: 560px;
    line-height: 1.7;
    margin-bottom: 32px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}
.banner-strip {
    background: linear-gradient(rgba(11,15,21,0.72), rgba(11,15,21,0.72)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
    border-radius: var(--radius-img);
    padding: 64px 48px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.05);
}
.banner-strip::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(230,57,70,0.7), transparent);
}
.two-col {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: center;
}
.info-media {
    border-radius: var(--radius-img);
    overflow: hidden;
    position: relative;
    min-height: 320px;
}
.info-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.info-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11,15,21,0.55), transparent 60%);
}
.sub-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.sub-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--surface);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 10px;
    padding: 14px 16px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
.sub-item:hover {
    border-color: rgba(230,57,70,0.4);
    background: var(--elevated);
    transform: translateX(4px);
}
.sub-item i {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: rgba(230,57,70,0.12);
    color: var(--brand-hover);
    font-size: 14px;
    flex-shrink: 0;
}
.scene-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr 1fr;
    gap: 24px;
    align-items: start;
}
.scene-card {
    background: var(--surface);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-card);
    padding: 28px;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}
.scene-card:nth-child(2) {
    transform: translateY(24px);
    background: var(--elevated);
}
.scene-card:nth-child(2):hover {
    transform: translateY(20px);
}
.scene-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(230,57,70,0.35);
}
.scene-card .icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(230,57,70,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-hover);
    font-size: 18px;
    margin-bottom: 18px;
}
.scene-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
}
.scene-card p {
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.7;
}
.scene-card .scene-img {
    margin-top: 20px;
    border-radius: 10px;
    height: 120px;
    object-fit: cover;
    width: 100%;
}
.feature-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 24px;
}
.feature-card {
    background: var(--surface);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-card);
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(230,57,70,0.35);
}
.feature-card.large {
    grid-row: span 2;
    background: linear-gradient(160deg, rgba(230,57,70,0.12), var(--surface) 60%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.feature-card .feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(230,57,70,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-hover);
    font-size: 20px;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
}
.feature-card p {
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.7;
}
.feature-card .feature-media {
    margin-top: 24px;
    border-radius: 10px;
    height: 160px;
    object-fit: cover;
    width: 100%;
}
.stat-band {
    background: var(--surface);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-img);
    padding: 48px 32px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat-item .stat-num {
    font-size: 42px;
    font-weight: 800;
    color: var(--brand-hover);
    line-height: 1.1;
    text-shadow: 0 0 24px rgba(230,57,70,0.35);
    display: inline-block;
}
.stat-item .stat-label {
    margin-top: 8px;
    color: var(--text-sub);
    font-size: 14px;
}
.timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}
.timeline::before {
    content: "";
    position: absolute;
    top: 24px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, rgba(230,57,70,0.2), rgba(230,57,70,0.6), rgba(230,57,70,0.2));
    border-radius: 2px;
}
.timeline-step {
    position: relative;
    padding-top: 64px;
    text-align: center;
}
.timeline-dot {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-ink);
    border: 2px solid var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--brand-hover);
    box-shadow: 0 0 18px rgba(230,57,70,0.5);
    z-index: 1;
}
.timeline-step h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}
.timeline-step p {
    color: var(--text-sub);
    font-size: 13px;
    line-height: 1.6;
    max-width: 200px;
    margin: 0 auto;
}
.faq-wrap {
    max-width: 820px;
    margin: 0 auto;
}
.faq-item {
    border-bottom: 1px solid rgba(255,255,255,0.07);
}
.faq-item:first-child {
    border-top: 1px solid rgba(255,255,255,0.07);
}
.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    text-align: left;
    transition: var(--transition);
    gap: 16px;
}
.faq-question:hover {
    color: var(--brand-hover);
}
.faq-question .faq-arrow {
    transition: transform .3s ease;
    color: var(--text-weak);
    font-size: 14px;
    flex-shrink: 0;
}
.faq-item.open .faq-arrow {
    transform: rotate(180deg);
    color: var(--brand);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .3s ease;
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.8;
    padding: 0 8px;
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 4px 8px 24px;
}
.cta-section {
    background: linear-gradient(135deg, rgba(230,57,70,0.85) 0%, rgba(199,30,45,0.95) 100%);
    border-radius: var(--radius-img);
    padding: 72px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: "";
    position: absolute;
    top: -60%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    filter: blur(80px);
}
.cta-section h2 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
    color: #fff;
}
.cta-section p {
    color: rgba(255,255,255,0.9);
    font-size: 16px;
    margin-bottom: 28px;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}
.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.footer {
    background: #080C11;
    padding: 64px 0 32px;
    margin-top: 88px;
    border-top: 1px solid rgba(255,255,255,0.04);
    position: relative;
}
.footer::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(230,57,70,0.7), transparent);
}
.footer-link {
    color: var(--text-sub);
    font-size: 14px;
    transition: var(--transition);
}
.footer-link:hover {
    color: var(--brand-hover);
}
.mobile-panel {
    max-height: 0;
    overflow: hidden;
    background: rgba(11,15,21,0.98);
    transition: max-height .35s ease;
    border-top: 1px solid rgba(255,255,255,0.04);
}
.mobile-panel.open {
    max-height: 260px;
}
.mobile-link {
    display: block;
    padding: 14px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-sub);
    border-bottom: 1px solid rgba(255,255,255,0.03);
    transition: var(--transition);
}
.mobile-link:hover {
    color: var(--brand-hover);
    background: rgba(255,255,255,0.03);
}
.mobile-link.active {
    color: #fff;
    border-left: 3px solid var(--brand);
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
    }
    html {
        scroll-behavior: auto;
    }
}
@media (max-width: 1024px) {
    .section {
        padding: 64px 0;
    }
    .two-col {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .feature-grid {
        grid-template-columns: 1fr 1fr;
    }
    .feature-card.large {
        grid-row: auto;
    }
    .scene-grid {
        grid-template-columns: 1fr 1fr;
    }
    .scene-card:nth-child(2) {
        transform: none;
    }
    .scene-card:nth-child(2):hover {
        transform: translateY(-4px);
    }
    .scene-card:nth-child(3) {
        grid-column: 1 / -1;
    }
    .timeline {
        grid-template-columns: 1fr 1fr;
        gap: 32px 24px;
    }
    .timeline::before {
        display: none;
    }
    .timeline-step {
        padding-top: 48px;
    }
    .stat-band {
        grid-template-columns: 1fr 1fr;
        gap: 32px 24px;
    }
    .banner-strip {
        padding: 40px 24px;
    }
}
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    .hero-banner {
        padding: 120px 0 56px;
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-sub {
        font-size: 16px;
    }
    .section-title {
        font-size: 24px;
    }
    .sub-list {
        grid-template-columns: 1fr;
    }
    .feature-grid {
        grid-template-columns: 1fr;
    }
    .scene-grid {
        grid-template-columns: 1fr;
    }
    .scene-card:nth-child(3) {
        grid-column: auto;
    }
    .stat-band {
        grid-template-columns: 1fr 1fr;
        padding: 32px 20px;
    }
    .stat-item .stat-num {
        font-size: 32px;
    }
    .timeline {
        grid-template-columns: 1fr;
    }
    .timeline-step {
        padding-top: 40px;
    }
    .cta-section {
        padding: 48px 24px;
    }
    .cta-section h2 {
        font-size: 26px;
    }
    .footer {
        padding: 48px 0 24px;
    }
}
@media (max-width: 520px) {
    .stat-band {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .hero-actions .btn {
        width: calc(50% - 7px);
        padding: 10px 14px;
        font-size: 14px;
    }
    .hero-actions {
        gap: 14px;
    }
    .btn-outline {
        border-color: rgba(255,255,255,0.3);
    }
    .banner-strip {
        padding: 32px 20px;
    }
    .two-col {
        gap: 24px;
    }
    .info-media {
        min-height: 220px;
    }
    .faq-question {
        font-size: 15px;
        padding: 18px 4px;
    }
    .cta-actions .btn {
        width: 100%;
    }
}

/* roulang page: article */
:root {
            --ink: #0B0F15;
            --surface: #131D27;
            --elevated: #1C2935;
            --brand: #E63946;
            --brand-hover: #FF5A5F;
            --accent: #4CC9F0;
            --text-main: #F2F4F8;
            --text-sub: #98A6B3;
            --text-weak: #5B6B7B;
            --border: rgba(255, 255, 255, 0.07);
            --radius: 12px;
            --shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
            --transition: all .2s cubic-bezier(.22, .61, .36, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--ink);
            color: var(--text-main);
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }

        .glass-nav {
            background: rgba(11, 15, 21, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .nav-topline {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, #E63946, transparent);
        }

        #navMenu {
            display: none;
            flex-direction: column;
            position: absolute;
            top: 68px;
            left: 0;
            right: 0;
            background: rgba(11, 15, 21, 0.96);
            padding: 12px 16px 16px;
            gap: 4px;
            border-bottom: 1px solid var(--border);
            backdrop-filter: blur(12px);
        }

        #navMenu.mobile-open {
            display: flex;
        }

        @media (min-width: 768px) {
            #navMenu {
                display: flex !important;
                flex-direction: row;
                position: static;
                background: transparent;
                padding: 0;
                border-bottom: none;
                gap: 32px;
            }
        }

        .nav-link {
            position: relative;
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            padding: 12px 8px;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: var(--text-main);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 8px;
            right: 8px;
            height: 2px;
            background: var(--brand);
            box-shadow: 0 0 12px rgba(230, 57, 70, 0.8);
            border-radius: 2px;
        }

        @media (min-width: 768px) {
            .nav-link {
                padding: 6px 2px;
            }
            .nav-link.active::after {
                bottom: -2px;
                left: 0;
                right: 0;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn:focus-visible {
            outline: 2px solid rgba(230, 57, 70, 0.5);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
        }

        .btn-primary:hover {
            background: var(--brand-hover);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.45);
            transform: translateY(-2px);
        }

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

        .btn-ghost {
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-main);
            background: transparent;
        }

        .btn-ghost:hover {
            border-color: var(--brand);
            color: var(--brand-hover);
            background: rgba(230, 57, 70, 0.05);
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .breadcrumb a {
            transition: var(--transition);
        }

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

        .breadcrumb .truncate {
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            color: var(--brand);
            background: rgba(230, 57, 70, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
            font-weight: 600;
        }

        .badge-red {
            display: inline-block;
            font-size: 12px;
            color: #fff;
            background: var(--brand);
            padding: 3px 10px;
            border-radius: 999px;
        }

        .article-body {
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.75;
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 40px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--brand);
            color: var(--text-main);
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 32px 0 12px;
            color: var(--text-main);
        }

        .article-body p {
            margin: 16px 0;
            color: var(--text-sub);
        }

        .article-body img {
            border-radius: 12px;
            margin: 24px 0;
        }

        .article-body blockquote {
            border-left: 3px solid var(--brand);
            background: rgba(230, 57, 70, 0.06);
            padding: 12px 16px;
            margin: 20px 0;
            color: var(--text-main);
            border-radius: 0 8px 8px 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0;
            padding-left: 1.5rem;
            color: var(--text-sub);
        }

        .article-body li {
            margin: 6px 0;
        }

        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            transition: var(--transition);
        }

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

        .rel-card {
            transition: var(--transition);
        }

        .rel-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px -10px rgba(230, 57, 70, 0.45);
            border-color: rgba(230, 57, 70, 0.4) !important;
        }

        .related-scroll {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .related-scroll::-webkit-scrollbar {
            display: none;
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .footer {
            background: #080C11;
            border-top: 1px solid rgba(230, 57, 70, 0.25);
        }

        .footer-link {
            color: var(--text-weak);
            transition: var(--transition);
        }

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

        @media (max-width: 767px) {
            .container {
                padding: 0 12px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
            }
        }