/* roulang page: index */
:root {
            --color-primary: #C4612F;
            --color-primary-hover: #A94E22;
            --color-primary-tint: #F2E3D6;
            --color-bg: #F7F4EF;
            --color-surface: #FBF9F5;
            --color-surface-alt: #FFFFFF;
            --color-border: #E7E1D7;
            --color-ink: #1F2421;
            --color-muted: #5C635D;
            --color-dark: #1F2421;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 3px rgba(31, 36, 33, 0.06);
            --shadow-md: 0 4px 12px rgba(31, 36, 33, 0.08);
            --shadow-lg: 0 8px 24px rgba(31, 36, 33, 0.12);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 48px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            font-weight: 300;
            line-height: 1.7;
            color: var(--color-ink);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, h5, h6 {
            font-family: 'Playfair Display', 'Times New Roman', serif;
            font-weight: 400;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(251, 249, 245, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
        }

        nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-sm) 0;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 500;
            color: var(--color-ink);
            letter-spacing: -0.01em;
        }

        .nav-links {
            display: flex;
            gap: var(--spacing-md);
            list-style: none;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 400;
            color: var(--color-muted);
            transition: color 0.2s ease;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--color-primary);
        }

        .hero {
            position: relative;
            min-height: 72vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(31, 36, 33, 0.88) 0%, rgba(31, 36, 33, 0.76) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            color: var(--color-surface);
            overflow: hidden;
        }

        .hero-content {
            max-width: 720px;
            padding: var(--spacing-2xl) 0;
        }

        .hero-eyebrow {
            display: inline-block;
            padding: 6px 16px;
            background: var(--color-primary-tint);
            color: var(--color-primary);
            font-size: 0.875rem;
            font-weight: 500;
            border-radius: var(--radius-pill);
            margin-bottom: var(--spacing-sm);
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            margin-bottom: var(--spacing-md);
            color: var(--color-surface);
        }

        .hero h1 em {
            font-style: italic;
            color: var(--color-primary);
        }

        .hero-description {
            font-size: 1.15rem;
            line-height: 1.8;
            color: rgba(251, 249, 245, 0.88);
            margin-bottom: var(--spacing-lg);
            font-weight: 300;
        }

        .btn-group {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            font-size: 0.95rem;
            font-weight: 500;
            cursor: pointer;
            border: none;
            transition: all 0.25s ease;
            text-align: center;
        }

        .btn-primary {
            background: var(--color-primary);
            color: white;
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-secondary {
            background: var(--color-surface);
            color: var(--color-ink);
            border: 1px solid var(--color-border);
        }

        .btn-secondary:hover {
            background: var(--color-surface-alt);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        section {
            padding: var(--spacing-2xl) 0;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto var(--spacing-xl);
        }

        .section-eyebrow {
            display: inline-block;
            padding: 4px 14px;
            background: var(--color-primary-tint);
            color: var(--color-primary);
            font-size: 0.8125rem;
            font-weight: 500;
            border-radius: var(--radius-pill);
            margin-bottom: var(--spacing-sm);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .section-title {
            font-size: clamp(2rem, 4vw, 2.75rem);
            margin-bottom: var(--spacing-sm);
        }

        .section-title em {
            font-style: italic;
            color: var(--color-primary);
        }

        .section-description {
            font-size: 1.05rem;
            color: var(--color-muted);
            line-height: 1.8;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: all 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-primary);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            background: var(--color-primary-tint);
            color: var(--color-primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: var(--spacing-sm);
        }

        .feature-card h3 {
            font-size: 1.25rem;
            margin-bottom: var(--spacing-xs);
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--color-muted);
            line-height: 1.7;
        }

        .content-showcase {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            margin: var(--spacing-xl) 0;
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: var(--spacing-md);
        }

        .content-card {
            background: var(--color-surface-alt);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all 0.3s ease;
        }

        .content-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .content-card-image {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--color-bg);
        }

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

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

        .content-card-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            padding: 4px 12px;
            background: rgba(196, 97, 47, 0.92);
            color: white;
            font-size: 0.75rem;
            font-weight: 500;
            border-radius: var(--radius-pill);
            backdrop-filter: blur(4px);
        }

        .content-card-body {
            padding: var(--spacing-sm);
        }

        .content-card h4 {
            font-size: 1rem;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .content-card-meta {
            display: flex;
            gap: var(--spacing-sm);
            font-size: 0.8125rem;
            color: var(--color-muted);
            margin-top: 8px;
        }

        .stats-section {
            background: var(--color-dark);
            color: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            margin: var(--spacing-xl) 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-lg);
            text-align: center;
        }

        .stat-item h3 {
            font-size: 3rem;
            color: var(--color-primary);
            margin-bottom: var(--spacing-xs);
        }

        .stat-item p {
            font-size: 1rem;
            color: rgba(251, 249, 245, 0.72);
        }

        .image-text-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            margin: var(--spacing-xl) 0;
        }

        .image-text-section img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        .image-text-content h2 {
            font-size: 2.25rem;
            margin-bottom: var(--spacing-md);
        }

        .image-text-content p {
            font-size: 1.05rem;
            color: var(--color-muted);
            line-height: 1.8;
            margin-bottom: var(--spacing-sm);
        }

        .image-text-list {
            list-style: none;
            margin: var(--spacing-md) 0;
        }

        .image-text-list li {
            padding: var(--spacing-xs) 0;
            padding-left: 28px;
            position: relative;
            font-size: 1rem;
            color: var(--color-muted);
        }

        .image-text-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--color-primary);
            font-weight: 600;
        }

        .faq-section {
            max-width: 840px;
            margin: var(--spacing-xl) auto;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-sm);
        }

        .faq-item h3 {
            font-size: 1.15rem;
            margin-bottom: var(--spacing-xs);
        }

        .faq-item p {
            font-size: 0.95rem;
            color: var(--color-muted);
            line-height: 1.7;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
            color: white;
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            text-align: center;
            margin: var(--spacing-xl) 0;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            color: white;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 1.125rem;
            margin-bottom: var(--spacing-lg);
            opacity: 0.92;
        }

        .cta-section .btn {
            background: white;
            color: var(--color-primary);
        }

        .cta-section .btn:hover {
            background: var(--color-surface);
        }

        footer {
            background: var(--color-dark);
            color: var(--color-surface);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-2xl);
        }

        .footer-content {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand {
            max-width: 320px;
        }

        .footer-brand h3 {
            font-size: 1.25rem;
            margin-bottom: var(--spacing-sm);
            color: var(--color-surface);
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(251, 249, 245, 0.68);
            line-height: 1.7;
        }

        .footer-links h4 {
            font-size: 1rem;
            margin-bottom: var(--spacing-sm);
            color: var(--color-surface);
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links a {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
            color: rgba(251, 249, 245, 0.68);
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(231, 225, 215, 0.15);
            padding-top: var(--spacing-md);
            text-align: center;
            font-size: 0.875rem;
            color: rgba(251, 249, 245, 0.56);
        }

        .posts-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }

        .post-card {
            background: var(--color-surface-alt);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .post-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
        }

        .post-card-body {
            padding: var(--spacing-sm);
        }

        .post-card h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .post-card p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.6;
            margin-bottom: var(--spacing-xs);
        }

        .post-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8125rem;
            color: var(--color-muted);
            padding-top: var(--spacing-xs);
            border-top: 1px solid var(--color-border);
        }

        .post-category {
            display: inline-block;
            padding: 2px 10px;
            background: var(--color-primary-tint);
            color: var(--color-primary);
            border-radius: var(--radius-pill);
            font-size: 0.75rem;
            font-weight: 500;
        }

        .empty-state {
            text-align: center;
            padding: var(--spacing-xl);
            background: var(--color-surface);
            border-radius: var(--radius-md);
            color: var(--color-muted);
            grid-column: 1 / -1;
        }

        .categories-showcase {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-lg);
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 4/3;
            cursor: pointer;
        }

        .category-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .category-card::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(31, 36, 33, 0.88) 0%, rgba(31, 36, 33, 0.2) 60%, transparent 100%);
        }

        .category-card:hover img {
            transform: scale(1.08);
        }

        .category-card-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: var(--spacing-md);
            z-index: 1;
            color: white;
        }

        .category-card-content h3 {
            font-size: 1.375rem;
            color: white;
            margin-bottom: 6px;
        }

        .category-card-content p {
            font-size: 0.9rem;
            opacity: 0.88;
            margin-bottom: var(--spacing-xs);
        }

        .category-card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8125rem;
            font-weight: 500;
            color: var(--color-primary-tint);
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-md);
        }

        .testimonial-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
        }

        .testimonial-rating {
            color: var(--color-primary);
            font-size: 0.95rem;
            margin-bottom: var(--spacing-xs);
        }

        .testimonial-card blockquote {
            font-size: 0.98rem;
            line-height: 1.7;
            color: var(--color-ink);
            margin-bottom: var(--spacing-sm);
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--color-border);
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary-tint);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 500;
            font-size: 0.95rem;
        }

        .testimonial-info h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
            font-family: 'Inter', sans-serif;
            font-weight: 500;
        }

        .testimonial-info span {
            font-size: 0.8125rem;
            color: var(--color-muted);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--color-ink);
        }

        @media (max-width: 1024px) {
            .footer-content {
                grid-template-columns: 1fr 1fr;
            }

            .image-text-section {
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                padding: var(--spacing-sm) var(--spacing-md);
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
            }

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

            .mobile-menu-btn {
                display: block;
            }

            .hero {
                min-height: 60vh;
            }

            .hero-content {
                padding: var(--spacing-xl) 0;
            }

            .image-text-section {
                grid-template-columns: 1fr;
            }

            section {
                padding: var(--spacing-xl) 0;
            }

            .content-showcase,
            .stats-section,
            .cta-section {
                padding: var(--spacing-lg) var(--spacing-md);
            }

            .stat-item h3 {
                font-size: 2.25rem;
            }

            .cta-section h2 {
                font-size: 1.75rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-xl: 40px;
                --spacing-2xl: 56px;
            }

            .container {
                padding: 0 var(--spacing-sm);
            }

            .hero h1 {
                font-size: 2rem;
            }

            .btn-group {
                flex-direction: column;
                width: 100%;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .section-title {
                font-size: 1.75rem;
            }
        }

/* roulang page: category5 */
:root{
  --c-bg:#0d0812;
  --c-bg-2:#171022;
  --c-surface:#1e1530;
  --c-surface-2:#261a3d;
  --c-primary:#c4327a;
  --c-primary-2:#7a3ec4;
  --c-accent:#ffb347;
  --c-text:#f4eef8;
  --c-text-dim:#b7abc6;
  --c-border:rgba(255,255,255,.08);
  --c-border-strong:rgba(255,255,255,.16);
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:22px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-lg:0 24px 60px rgba(122,62,196,.28);
  --space:clamp(16px,3vw,28px);
  --grad-primary:linear-gradient(135deg,#c4327a 0%,#7a3ec4 60%,#3e5bc4 100%);
  --grad-warm:linear-gradient(135deg,#ff6a88 0%,#c4327a 50%,#7a3ec4 100%);
  --trans:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:var(--trans)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:.5px}
p{margin:0}

.container{width:min(1200px,100% - 2*var(--space));margin-inline:auto}

/* header */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(13,8,18,.85);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-border);
}
header nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 0;gap:20px;
}
.logo{
  font-size:22px;font-weight:800;
  background:var(--grad-warm);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:1px;
}
.nav-links{display:flex;gap:6px;flex-wrap:wrap}
.nav-links a{
  display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:14.5px;color:var(--c-text-dim);
  border:1px solid transparent;
}
.nav-links a:hover{color:var(--c-text);background:rgba(255,255,255,.05);border-color:var(--c-border)}
.nav-links a.active{
  color:#fff;background:var(--grad-primary);
  box-shadow:0 6px 20px rgba(196,50,122,.35);
}
.mobile-menu-btn{
  display:none;font-size:24px;
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--c-border);background:var(--c-surface);
}

/* hero */
.hero{
  position:relative;padding:80px 0 90px;
  background:
    linear-gradient(180deg,rgba(13,8,18,.4) 0%,rgba(13,8,18,.85) 70%,var(--c-bg) 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse at 20% 30%,rgba(196,50,122,.28),transparent 50%),
             radial-gradient(ellipse at 80% 70%,rgba(122,62,196,.28),transparent 55%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  background:rgba(255,179,71,.12);color:var(--c-accent);
  font-size:13px;font-weight:600;
  border:1px solid rgba(255,179,71,.3);margin-bottom:22px;
}
.hero h1{
  font-size:clamp(30px,4.5vw,52px);font-weight:800;
  margin-bottom:20px;letter-spacing:1px;
}
.hero h1 em{
  font-style:normal;
  background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-desc{color:var(--c-text-dim);font-size:16.5px;max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-meta{display:flex;gap:32px;flex-wrap:wrap}
.hero-meta div{display:flex;flex-direction:column}
.hero-meta strong{font-size:26px;font-weight:800;color:#fff}
.hero-meta span{font-size:13px;color:var(--c-text-dim);margin-top:2px}

.hero-visual{
  position:relative;border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-lg);
  border:1px solid var(--c-border-strong);
  aspect-ratio:4/5;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::before{
  content:"18+";position:absolute;top:16px;left:16px;z-index:3;
  padding:6px 12px;border-radius:8px;
  background:rgba(0,0,0,.6);color:var(--c-accent);
  font-weight:700;font-size:13px;letter-spacing:1px;
  border:1px solid rgba(255,179,71,.4);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(13,8,18,.75) 100%);
}
.hero-visual-cap{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:3;
}
.hero-visual-cap h4{font-size:18px;margin-bottom:6px}
.hero-visual-cap span{font-size:13px;color:var(--c-text-dim)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:12px;font-weight:600;font-size:15px;
  transition:var(--trans);cursor:pointer;
}
.btn-primary{
  background:var(--grad-primary);color:#fff;
  box-shadow:0 8px 24px rgba(196,50,122,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(196,50,122,.5)}
.btn-ghost{
  background:rgba(255,255,255,.06);color:var(--c-text);
  border:1px solid var(--c-border-strong);
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:var(--c-primary)}
.btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px}

/* section base */
section{padding:80px 0}
.section-head{text-align:center;margin-bottom:52px}
.section-head .kicker{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:rgba(196,50,122,.14);color:#e588b6;
  font-size:12.5px;font-weight:600;letter-spacing:1.5px;
  border:1px solid rgba(196,50,122,.3);margin-bottom:16px;
}
.section-head h2{font-size:clamp(26px,3.2vw,38px);margin-bottom:14px}
.section-head p{color:var(--c-text-dim);max-width:660px;margin-inline:auto;font-size:16px}

/* theme grid */
.theme-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.theme-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-border);
  transition:var(--trans);
  aspect-ratio:4/5;
}
.theme-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--c-border-strong)}
.theme-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.theme-card:hover img{transform:scale(1.06)}
.theme-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.85) 100%);
}
.theme-card-body{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;
}
.theme-tag{
  display:inline-block;padding:4px 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.5px;margin-bottom:10px;
  background:rgba(255,179,71,.2);color:var(--c-accent);
  border:1px solid rgba(255,179,71,.35);
}
.theme-card h3{font-size:20px;margin-bottom:6px;color:#fff}
.theme-card p{font-size:14px;color:var(--c-text-dim);margin-bottom:10px}
.theme-card .meta{display:flex;gap:14px;font-size:12.5px;color:var(--c-text-dim)}
.theme-card .meta span::before{content:"● ";color:var(--c-primary)}

/* selling points */
.points{background:var(--c-bg-2)}
.points-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.point{
  padding:32px 26px;border-radius:var(--radius);
  background:var(--c-surface);border:1px solid var(--c-border);
  transition:var(--trans);
}
.point:hover{transform:translateY(-4px);border-color:var(--c-primary);box-shadow:var(--shadow)}
.point-icon{
  width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad-primary);font-size:24px;margin-bottom:20px;
  box-shadow:0 8px 20px rgba(196,50,122,.3);
}
.point h3{font-size:17px;margin-bottom:10px}
.point p{color:var(--c-text-dim);font-size:14.5px;line-height:1.7}

/* scenario */
.scenario-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.scenario-img{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);border:1px solid var(--c-border-strong);
}
.scenario-img img{width:100%;aspect-ratio:5/4;object-fit:cover}
.scenario-list{display:flex;flex-direction:column;gap:16px}
.scenario-item{
  display:flex;gap:18px;padding:22px;
  background:var(--c-surface);border-radius:var(--radius);
  border:1px solid var(--c-border);transition:var(--trans);
}
.scenario-item:hover{border-color:var(--c-primary);transform:translateX(4px)}
.scenario-item .num{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(196,50,122,.15);color:#e588b6;
  font-weight:800;font-size:16px;
  border:1px solid rgba(196,50,122,.3);
}
.scenario-item h4{font-size:16px;margin-bottom:6px}
.scenario-item p{font-size:14px;color:var(--c-text-dim)}

/* flow */
.flow{background:var(--c-bg-2)}
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.flow-step{
  padding:28px 24px;border-radius:var(--radius);
  background:var(--c-surface);border:1px solid var(--c-border);
  text-align:center;position:relative;
}
.flow-step .step-num{
  position:absolute;top:-18px;left:50%;transform:translateX(-50%);
  width:36px;height:36px;border-radius:50%;
  background:var(--grad-warm);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;
  box-shadow:0 6px 16px rgba(196,50,122,.4);
}
.flow-step h4{font-size:16px;margin:14px 0 10px}
.flow-step p{color:var(--c-text-dim);font-size:14px}

/* tag cloud */
.tags-section{padding-top:0}
.tag-cloud{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  max-width:900px;margin:0 auto;
}
.tag-cloud a{
  padding:10px 18px;border-radius:999px;
  background:var(--c-surface);border:1px solid var(--c-border);
  font-size:14px;color:var(--c-text-dim);
}
.tag-cloud a:hover{
  background:var(--grad-primary);color:#fff;border-color:transparent;
  transform:translateY(-2px);
}

/* faq */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  border:1px solid var(--c-border);border-radius:var(--radius);
  background:var(--c-surface);overflow:hidden;transition:var(--trans);
}
.faq-item:hover{border-color:var(--c-border-strong)}
.faq-q{
  padding:22px 26px;display:flex;justify-content:space-between;align-items:center;
  gap:16px;font-weight:600;font-size:16px;cursor:pointer;width:100%;text-align:left;
}
.faq-q::after{content:"+";font-size:24px;color:var(--c-primary);transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .4s ease;
  color:var(--c-text-dim);font-size:15px;
}
.faq-item.open .faq-a{max-height:400px}
.faq-a p{padding:0 26px 22px}

/* CTA */
.cta{
  background:
    linear-gradient(135deg,rgba(196,50,122,.75),rgba(122,62,196,.75)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  text-align:center;padding:80px 0;position:relative;overflow:hidden;
}
.cta::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at center,transparent 30%,rgba(0,0,0,.5));
}
.cta-inner{position:relative;z-index:2;max-width:720px;margin-inline:auto}
.cta h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:16px;color:#fff}
.cta p{color:rgba(255,255,255,.9);font-size:16.5px;margin-bottom:32px}
.cta .btn-primary{background:#fff;color:var(--c-primary);box-shadow:0 12px 30px rgba(0,0,0,.3)}
.cta .btn-primary:hover{transform:translateY(-2px);background:#fff8fb}
.cta .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.cta .btn-ghost:hover{background:rgba(255,255,255,.15)}

/* footer */
footer{background:#08050c;padding:60px 0 24px;border-top:1px solid var(--c-border)}
.footer-content{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand h3{
  font-size:22px;margin-bottom:14px;
  background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.footer-brand p{color:var(--c-text-dim);font-size:14px;line-height:1.8;max-width:340px}
.footer-links h4{font-size:15px;margin-bottom:18px;color:#fff}
.footer-links ul{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--c-text-dim);font-size:14px}
.footer-links a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--c-border);padding-top:22px;text-align:center;
  color:var(--c-text-dim);font-size:13px;
}

/* responsive */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:420px;margin:0 auto;aspect-ratio:16/10}
  .theme-grid{grid-template-columns:repeat(2,1fr)}
  .points-grid{grid-template-columns:repeat(2,1fr)}
  .scenario-wrap{grid-template-columns:1fr;gap:36px}
  .flow-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .footer-content{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;padding:16px;gap:6px;
    background:var(--c-bg-2);border-bottom:1px solid var(--c-border);
  }
  .nav-links.open{display:flex}
  .nav-links a{border-radius:10px}
  .mobile-menu-btn{display:inline-flex;align-items:center;justify-content:center}
  section{padding:64px 0}
  .hero{padding:56px 0 70px}
  .hero-meta{gap:22px}
  .hero-meta strong{font-size:22px}
}
@media (max-width:520px){
  .theme-grid{grid-template-columns:1fr}
  .points-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr;gap:32px}
  .footer-content{grid-template-columns:1fr;gap:28px}
  .footer-brand p{max-width:none}
  .hero h1{font-size:30px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .btn{width:100%}
}

/* roulang page: category4 */
:root{
  --bg:#0d0a14;
  --bg-alt:#141020;
  --surface:#1c1728;
  --surface-2:#25202f;
  --border:rgba(255,255,255,0.08);
  --text:#f4eef7;
  --muted:#a29bb0;
  --primary:#e8305f;
  --primary-2:#ff5a8a;
  --accent:#ffb347;
  --gold:#f0c674;
  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 4px 12px rgba(0,0,0,.25);
  --shadow:0 12px 40px rgba(0,0,0,.4);
  --shadow-lg:0 24px 70px rgba(232,48,95,.25);
  --gap:24px;
  --container:1220px;
  --transition:.28s cubic-bezier(.4,.2,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--primary-2)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* HEADER */
header{
  position:sticky;top:0;z-index:100;
  background:rgba(13,10,20,.85);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
}
header nav{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.logo{
  font-size:22px;font-weight:800;
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:.5px;
}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{
  padding:10px 16px;border-radius:10px;
  font-size:14.5px;color:var(--muted);font-weight:500;
  transition:all var(--transition);
}
.nav-links a:hover{color:var(--text);background:var(--surface)}
.nav-links a.active{
  color:var(--text);
  background:linear-gradient(135deg,rgba(232,48,95,.2),rgba(255,90,138,.1));
  box-shadow:inset 0 0 0 1px rgba(232,48,95,.35);
}
.mobile-menu-btn{
  display:none;font-size:26px;color:var(--text);
  width:44px;height:44px;border-radius:10px;
}
.mobile-menu-btn:hover{background:var(--surface)}

/* HERO */
.hero{
  position:relative;
  padding:96px 0 80px;
  overflow:hidden;
  background:
    linear-gradient(180deg,rgba(13,10,20,.55) 0%,rgba(13,10,20,.85) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 20% 30%,rgba(232,48,95,.25),transparent 55%),
             radial-gradient(circle at 80% 70%,rgba(255,179,71,.18),transparent 55%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  background:rgba(232,48,95,.12);
  border:1px solid rgba(232,48,95,.35);
  font-size:13px;color:var(--primary-2);font-weight:600;
  margin-bottom:22px;
}
.hero-eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary)}
.hero h1{
  font-size:clamp(34px,4.6vw,58px);
  line-height:1.15;letter-spacing:-.5px;
  margin-bottom:22px;
}
.hero h1 span{
  background:linear-gradient(135deg,var(--primary-2) 0%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{
  font-size:17px;color:var(--muted);
  margin-bottom:32px;max-width:560px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:12px;
  font-size:15px;font-weight:600;
  transition:all var(--transition);
  cursor:pointer;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  color:#fff;box-shadow:var(--shadow-lg);
}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 30px 80px rgba(232,48,95,.4)}
.btn-primary:focus{outline:2px solid var(--accent);outline-offset:3px}
.btn-ghost{
  background:rgba(255,255,255,.06);
  border:1px solid var(--border);
  color:var(--text);
}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(255,255,255,.2)}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-stat .num{font-size:28px;font-weight:800;color:var(--text)}
.hero-stat .num em{font-style:normal;color:var(--accent)}
.hero-stat .label{font-size:13px;color:var(--muted);margin-top:2px}

.hero-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  aspect-ratio:4/5;
  box-shadow:var(--shadow-lg);
  border:1px solid var(--border);
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(13,10,20,.9) 100%);
}
.hero-visual-caption{
  position:absolute;left:24px;right:24px;bottom:24px;z-index:2;
}
.hero-visual-caption .tag{
  display:inline-block;padding:5px 12px;border-radius:6px;
  background:rgba(255,255,255,.15);backdrop-filter:blur(10px);
  font-size:12px;font-weight:600;margin-bottom:10px;
}
.hero-visual-caption h4{font-size:20px;margin-bottom:4px}
.hero-visual-caption p{font-size:13px;color:rgba(255,255,255,.75)}

/* SECTIONS */
section{padding:88px 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 56px}
.section-head .kicker{
  display:inline-block;padding:6px 14px;border-radius:6px;
  background:var(--surface);color:var(--primary-2);
  font-size:12.5px;font-weight:600;letter-spacing:1px;text-transform:uppercase;
  margin-bottom:16px;
}
.section-head h2{font-size:clamp(28px,3.4vw,40px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}

/* REGIONS */
.regions-bg{background:var(--bg-alt)}
.region-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.region-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:4/5;
  transition:all var(--transition);
  border:1px solid var(--border);
}
.region-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.region-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 35%,rgba(13,10,20,.95) 100%);
}
.region-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.region-card:hover img{transform:scale(1.08)}
.region-info{
  position:absolute;left:24px;right:24px;bottom:24px;z-index:2;
}
.region-info .country{
  font-size:12px;font-weight:600;letter-spacing:1.5px;
  color:var(--accent);text-transform:uppercase;margin-bottom:8px;
}
.region-info h3{font-size:22px;margin-bottom:8px}
.region-info p{font-size:14px;color:rgba(255,255,255,.75);margin-bottom:14px}
.region-meta{display:flex;gap:12px;font-size:12px;color:rgba(255,255,255,.6)}
.region-meta span{display:inline-flex;align-items:center;gap:5px}

/* FEATURES */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.feature-card{
  padding:32px 26px;border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--border);
  transition:all var(--transition);
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(232,48,95,.3);
  background:var(--surface-2);
}
.feature-icon{
  width:52px;height:52px;border-radius:12px;
  background:linear-gradient(135deg,rgba(232,48,95,.2),rgba(255,179,71,.1));
  display:flex;align-items:center;justify-content:center;
  font-size:24px;margin-bottom:20px;
  border:1px solid rgba(232,48,95,.25);
}
.feature-card h3{font-size:18px;margin-bottom:10px}
.feature-card p{font-size:14.5px;color:var(--muted)}

/* SCENES */
.scenes-bg{
  background:var(--bg-alt);
  position:relative;
  overflow:hidden;
}
.scenes-bg::before{
  content:"";position:absolute;top:-40%;right:-10%;
  width:600px;height:600px;
  background:radial-gradient(circle,rgba(232,48,95,.12),transparent 70%);
  pointer-events:none;
}
.scene-list{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);position:relative;z-index:2}
.scene-item{
  display:flex;gap:22px;padding:26px;
  border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--border);
  transition:all var(--transition);
}
.scene-item:hover{border-color:rgba(232,48,95,.35);transform:translateX(4px)}
.scene-number{
  flex-shrink:0;width:52px;height:52px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--primary-2));
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;color:#fff;
}
.scene-body h3{font-size:17px;margin-bottom:8px}
.scene-body p{font-size:14.5px;color:var(--muted);margin-bottom:12px}
.scene-tags{display:flex;gap:8px;flex-wrap:wrap}
.scene-tags span{
  padding:4px 10px;border-radius:6px;
  background:rgba(255,255,255,.05);
  font-size:12px;color:var(--muted);
  border:1px solid var(--border);
}

/* FLOW */
.flow-wrap{position:relative}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);position:relative}
.flow-step{
  padding:30px 24px;border-radius:var(--radius);
  background:var(--surface);
  border-top:3px solid var(--primary);
  position:relative;
}
.flow-step .step-idx{
  position:absolute;top:-18px;right:24px;
  width:44px;height:44px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:var(--primary-2);font-size:16px;
}
.flow-step h3{font-size:17px;margin-bottom:10px}
.flow-step p{font-size:14px;color:var(--muted)}

/* SHOWCASE */
.showcase-bg{background:var(--bg-alt)}
.showcase-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.showcase-card{
  border-radius:var(--radius);overflow:hidden;
  background:var(--surface);border:1px solid var(--border);
  transition:all var(--transition);
}
.showcase-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.showcase-thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.showcase-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.showcase-card:hover .showcase-thumb img{transform:scale(1.1)}
.showcase-badge{
  position:absolute;top:12px;left:12px;
  padding:4px 10px;border-radius:6px;
  background:rgba(232,48,95,.9);color:#fff;
  font-size:11.5px;font-weight:700;letter-spacing:.5px;
}
.showcase-duration{
  position:absolute;bottom:10px;right:10px;
  padding:3px 8px;border-radius:5px;
  background:rgba(0,0,0,.7);font-size:11.5px;color:#fff;font-weight:600;
}
.showcase-body{padding:18px 20px 22px}
.showcase-body .region-line{
  font-size:11.5px;color:var(--accent);
  font-weight:600;letter-spacing:1px;margin-bottom:8px;
}
.showcase-body h4{font-size:16px;margin-bottom:6px;line-height:1.4}
.showcase-body .meta{font-size:13px;color:var(--muted);display:flex;justify-content:space-between;margin-top:10px}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--border);
  overflow:hidden;
  transition:all var(--transition);
}
.faq-item:hover{border-color:rgba(232,48,95,.3)}
.faq-item summary{
  padding:22px 26px;cursor:pointer;
  font-weight:600;font-size:16px;
  display:flex;justify-content:space-between;align-items:center;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:24px;color:var(--primary-2);
  transition:transform var(--transition);font-weight:400;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 26px 24px;color:var(--muted);font-size:15px;line-height:1.75}

/* CTA */
.cta-block{
  background:linear-gradient(135deg,rgba(232,48,95,.15) 0%,rgba(255,179,71,.1) 100%),var(--surface);
  border-radius:var(--radius-lg);
  padding:64px 40px;
  text-align:center;
  border:1px solid rgba(232,48,95,.25);
  position:relative;
  overflow:hidden;
}
.cta-block::before{
  content:"";position:absolute;top:-50%;left:-20%;
  width:500px;height:500px;
  background:radial-gradient(circle,rgba(255,179,71,.15),transparent 70%);
  pointer-events:none;
}
.cta-block .container{position:relative;z-index:2}
.cta-block h2{font-size:clamp(26px,3vw,36px);margin-bottom:16px}
.cta-block p{font-size:16px;color:var(--muted);margin-bottom:32px;max-width:640px;margin-left:auto;margin-right:auto}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* FOOTER */
footer{
  background:var(--surface);
  border-top:1px solid var(--border);
  padding:56px 0 32px;
}
.footer-content{display:grid;grid-template-columns:1.2fr repeat(3,.8fr);gap:48px;margin-bottom:42px}
.footer-brand h3{font-size:20px;margin-bottom:12px}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.7;max-width:360px}
.footer-links h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-links ul{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted);transition:color var(--transition)}
.footer-links a:hover{color:var(--primary-2);padding-left:4px}
.footer-bottom{
  padding-top:28px;
  border-top:1px solid var(--border);
  text-align:center;
}
.footer-bottom p{font-size:13px;color:var(--muted)}

/* RESPONSIVE */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr}
  .hero-visual{max-width:500px;margin:0 auto}
  .region-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .showcase-grid{grid-template-columns:repeat(3,1fr)}
  .footer-content{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  :root{--gap:18px}
  section{padding:64px 0}
  .nav-links{
    position:fixed;top:72px;left:0;right:0;
    background:rgba(13,10,20,.97);backdrop-filter:blur(20px);
    flex-direction:column;padding:20px;gap:4px;
    border-bottom:1px solid var(--border);
    transform:translateY(-100%);opacity:0;
    transition:all var(--transition);pointer-events:none;
  }
  .nav-links.active{transform:translateY(0);opacity:1;pointer-events:all}
  .nav-links a{display:block;width:100%;text-align:left}
  .mobile-menu-btn{display:flex;align-items:center;justify-content:center}
  .hero{padding:64px 0 56px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-stats{gap:24px}
  .region-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .scene-list{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .showcase-grid{grid-template-columns:1fr}
  .footer-content{grid-template-columns:1fr;gap:36px}
  .cta-block{padding:48px 28px}
}
@media(max-width:520px){
  .hero h1{font-size:30px}
  .section-head h2{font-size:26px}
  .showcase-grid{grid-template-columns:1fr}
  .hero-stats{flex-direction:column;gap:18px}
}

/* roulang page: article */
:root{
  --c-bg:#0b0710;
  --c-bg-2:#150c1f;
  --c-surface:#1a1226;
  --c-surface-2:#231733;
  --c-border:rgba(255,255,255,.08);
  --c-border-strong:rgba(255,255,255,.14);
  --c-text:#f4eefb;
  --c-text-soft:#c7bad6;
  --c-muted:#8a7d9c;
  --c-primary:#ff2e7a;
  --c-primary-2:#c81f9a;
  --c-accent:#7a3bff;
  --c-gold:#f5c56a;
  --c-success:#2fd48a;
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 4px 14px rgba(0,0,0,.35);
  --shadow:0 14px 40px rgba(120,20,90,.28);
  --shadow-lg:0 28px 70px rgba(80,10,80,.4);
  --grad-primary:linear-gradient(135deg,#ff2e7a 0%,#7a3bff 100%);
  --grad-warm:linear-gradient(135deg,#ff6b3d 0%,#ff2e7a 60%,#a02fff 100%);
  --grad-dark:linear-gradient(180deg,rgba(11,7,16,.2),rgba(11,7,16,.95));
  --f-sans:"PingFang SC","Microsoft Yahei","Segoe UI",system-ui,-apple-system,sans-serif;
  --sp-1:6px;--sp-2:12px;--sp-3:18px;--sp-4:26px;--sp-5:36px;--sp-6:52px;--sp-7:72px;--sp-8:96px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--f-sans);
  color:var(--c-text);
  background:var(--c-bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:var(--c-text);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--c-primary)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.25;font-weight:700;letter-spacing:.5px}
p{margin:0 0 1em}
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* Header */
header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,7,16,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-border);
}
header nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo{
  font-size:22px;font-weight:800;letter-spacing:1px;
  background:var(--grad-primary);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  white-space:nowrap;
}
.nav-links{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.nav-links a{
  display:inline-block;padding:10px 14px;border-radius:999px;
  font-size:14.5px;color:var(--c-text-soft);font-weight:500;
  transition:all .25s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,46,122,.12)}
.nav-links a.active{color:#fff;background:var(--grad-primary);box-shadow:0 6px 18px rgba(255,46,122,.35)}
.mobile-menu-btn{display:none;font-size:24px;color:#fff;padding:6px 10px;border-radius:8px}

/* Article Hero */
.article-hero{
  position:relative;
  padding:72px 0 40px;
  background:
    linear-gradient(180deg,rgba(11,7,16,.6),rgba(11,7,16,.95)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(1000px 400px at 20% 0%,rgba(255,46,122,.28),transparent 60%),
             radial-gradient(800px 400px at 90% 20%,rgba(122,59,255,.25),transparent 65%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  color:var(--c-muted);font-size:13.5px;margin-bottom:22px;
}
.breadcrumb a{color:var(--c-text-soft)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span.sep{opacity:.5}
.article-meta-top{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px;
}
.tag-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  background:var(--grad-primary);color:#fff;
  font-size:13px;font-weight:600;letter-spacing:.5px;
  box-shadow:0 8px 20px rgba(255,46,122,.35);
}
.meta-date,.meta-view{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-text-soft);font-size:13.5px;
}
.meta-date::before{content:"⏱";}
.meta-view::before{content:"👁";}
.article-hero h1{
  font-size:clamp(28px,4vw,44px);
  color:#fff;
  max-width:960px;
  line-height:1.2;
  text-shadow:0 4px 20px rgba(0,0,0,.5);
}
.article-summary{
  max-width:820px;color:var(--c-text-soft);
  font-size:16.5px;margin-top:8px;
}

/* Main layout */
.article-main{
  padding:60px 0 40px;
  background:linear-gradient(180deg,var(--c-bg) 0%,var(--c-bg-2) 100%);
}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:44px;
  align-items:flex-start;
}

/* Article body */
.article-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  padding:44px 48px;
  box-shadow:var(--shadow);
}
.article-content{
  color:var(--c-text-soft);
  font-size:16.5px;line-height:1.95;
}
.article-content h2{
  font-size:26px;color:#fff;margin-top:2em;
  padding-left:14px;border-left:4px solid var(--c-primary);
}
.article-content h3{font-size:20px;color:#fff;margin-top:1.6em}
.article-content p{margin:1em 0}
.article-content a{color:var(--c-primary);border-bottom:1px dashed rgba(255,46,122,.4)}
.article-content a:hover{color:#ff5c96;border-bottom-color:var(--c-primary)}
.article-content ul,.article-content ol{margin:1em 0;padding-left:1.5em}
.article-content ul li{list-style:disc;margin:.4em 0}
.article-content ol li{list-style:decimal;margin:.4em 0}
.article-content blockquote{
  margin:1.6em 0;padding:18px 24px;
  border-left:4px solid var(--c-accent);
  background:rgba(122,59,255,.08);border-radius:0 var(--radius) var(--radius) 0;
  color:#e2d5f0;font-style:normal;
}
.article-content img{margin:1.4em auto;box-shadow:var(--shadow-sm);border-radius:var(--radius)}
.article-content code{
  padding:2px 8px;border-radius:6px;
  background:rgba(255,255,255,.08);font-size:.92em;color:#ffb8d4;
}
.article-content table{width:100%;border-collapse:collapse;margin:1.4em 0}
.article-content th,.article-content td{
  padding:12px 14px;border:1px solid var(--c-border-strong);text-align:left;
}
.article-content th{background:rgba(255,46,122,.12);color:#fff}

.empty-state{
  padding:80px 20px;text-align:center;
}
.empty-state h2{color:#fff;font-size:28px}
.empty-state p{color:var(--c-muted);margin:12px 0 28px}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 30px;border-radius:999px;
  font-weight:600;font-size:15px;letter-spacing:.5px;
  transition:all .3s ease;
  cursor:pointer;
}
.btn-primary{
  background:var(--grad-primary);color:#fff;
  box-shadow:0 12px 30px rgba(255,46,122,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(255,46,122,.5);color:#fff}
.btn-ghost{
  background:transparent;color:var(--c-text);
  border:1px solid var(--c-border-strong);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);color:#fff}

/* Article footer share */
.article-share{
  margin-top:36px;padding-top:28px;
  border-top:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;
}
.share-label{color:var(--c-muted);font-size:14px}
.share-btns{display:flex;gap:10px;flex-wrap:wrap}
.share-btns a{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface-2);color:var(--c-text-soft);
  border:1px solid var(--c-border);
  transition:all .25s ease;font-size:15px;
}
.share-btns a:hover{background:var(--grad-primary);color:#fff;border-color:transparent;transform:translateY(-2px)}

/* Sidebar */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  padding:24px 22px;
}
.side-card h3{
  font-size:17px;color:#fff;margin-bottom:16px;
  padding-bottom:12px;border-bottom:1px solid var(--c-border);
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:4px;height:16px;background:var(--grad-primary);
  border-radius:2px;
}
.hot-list li{margin-bottom:14px}
.hot-list a{
  display:flex;gap:12px;align-items:flex-start;
  color:var(--c-text-soft);font-size:14px;line-height:1.55;
}
.hot-list a:hover{color:#fff}
.hot-num{
  flex:0 0 24px;width:24px;height:24px;border-radius:6px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface-2);color:var(--c-muted);
  font-size:12.5px;font-weight:700;
}
.hot-list li:nth-child(-n+3) .hot-num{background:var(--grad-primary);color:#fff}

.cat-chips{display:flex;flex-wrap:wrap;gap:8px}
.cat-chips a{
  display:inline-block;padding:8px 14px;border-radius:999px;
  background:var(--c-surface-2);color:var(--c-text-soft);
  font-size:13px;border:1px solid var(--c-border);
}
.cat-chips a:hover{background:var(--grad-primary);color:#fff;border-color:transparent}

.side-promo{
  padding:22px;border-radius:var(--radius-lg);
  background:var(--grad-warm);color:#fff;position:relative;overflow:hidden;
}
.side-promo::before{
  content:"";position:absolute;right:-40px;top:-40px;
  width:160px;height:160px;border-radius:50%;
  background:rgba(255,255,255,.15);
}
.side-promo h4{font-size:19px;margin:0 0 8px;color:#fff}
.side-promo p{font-size:13.5px;opacity:.9;margin-bottom:16px}
.side-promo .btn{background:#fff;color:var(--c-primary-2);padding:10px 22px;font-size:14px}
.side-promo .btn:hover{background:#fff2f7;color:var(--c-primary-2)}

/* Related posts */
.related-section{padding:70px 0;background:var(--c-bg-2)}
.section-head{text-align:center;margin-bottom:44px}
.section-head .eyebrow{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:rgba(255,46,122,.12);color:var(--c-primary);
  font-size:12.5px;font-weight:600;letter-spacing:1.5px;
  margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3vw,34px);color:#fff}
.section-head p{color:var(--c-muted);max-width:640px;margin:0 auto}

.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rel-card{
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:all .35s ease;
  display:flex;flex-direction:column;
}
.rel-card:hover{transform:translateY(-6px);border-color:rgba(255,46,122,.4);box-shadow:var(--shadow)}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.06)}
.rel-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(11,7,16,.65) 100%);
}
.rel-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;
  background:rgba(255,255,255,.15);backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:20px;
  border:1px solid rgba(255,255,255,.3);
  transition:all .3s ease;
}
.rel-card:hover .rel-play{background:var(--c-primary);border-color:var(--c-primary);transform:translate(-50%,-50%) scale(1.1)}
.rel-tag-hd{
  position:absolute;top:12px;left:12px;z-index:2;
  padding:4px 10px;border-radius:6px;
  background:var(--c-gold);color:#1a0f00;
  font-size:11.5px;font-weight:800;letter-spacing:1px;
}
.rel-body{padding:18px 20px 22px;flex:1;display:flex;flex-direction:column}
.rel-cat{color:var(--c-primary);font-size:12.5px;font-weight:600;letter-spacing:.5px;margin-bottom:8px}
.rel-body h3{font-size:16.5px;color:#fff;line-height:1.5;margin:0 0 12px;flex:1}
.rel-body h3 a{color:#fff}
.rel-body h3 a:hover{color:var(--c-primary)}
.rel-meta{
  display:flex;justify-content:space-between;align-items:center;
  color:var(--c-muted);font-size:12.5px;padding-top:12px;
  border-top:1px solid var(--c-border);
}

/* CTA section */
.cta-band{
  padding:70px 0;
  background:
    linear-gradient(120deg,rgba(11,7,16,.85),rgba(11,7,16,.6)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  position:relative;
}
.cta-inner{
  max-width:820px;margin:0 auto;text-align:center;
  padding:44px 30px;
  background:rgba(26,18,38,.75);
  border:1px solid var(--c-border-strong);
  backdrop-filter:blur(10px);
  border-radius:var(--radius-lg);
}
.cta-inner h2{font-size:clamp(24px,3vw,32px);color:#fff}
.cta-inner p{color:var(--c-text-soft);margin-bottom:24px;font-size:15.5px}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Footer */
footer{
  background:#07040c;padding:60px 0 30px;
  border-top:1px solid var(--c-border);
}
.footer-content{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;
  margin-bottom:40px;
}
.footer-brand h3{
  font-size:20px;
  background:var(--grad-primary);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:14px;
}
.footer-brand p{color:var(--c-muted);font-size:14px;max-width:340px;line-height:1.75}
.footer-links h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-links ul li{margin-bottom:10px}
.footer-links a{color:var(--c-muted);font-size:14px}
.footer-links a:hover{color:var(--c-primary)}
.footer-bottom{
  padding-top:26px;border-top:1px solid var(--c-border);
  text-align:center;color:var(--c-muted);font-size:13px;
}

/* Responsive */
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:34px}
  .sidebar{position:static}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-content{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .nav-links{
    position:absolute;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(11,7,16,.98);
    border-bottom:1px solid var(--c-border);
    padding:12px 20px 20px;
    display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:10px}
  .mobile-menu-btn{display:inline-block}
  .article-card{padding:28px 22px}
  .article-hero{padding:52px 0 34px}
  .article-content h2{font-size:22px}
  .article-content{font-size:15.5px}
  .related-grid{grid-template-columns:1fr}
  .article-share{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .article-hero h1{font-size:24px}
  .footer-content{grid-template-columns:1fr}
  .cta-btns{flex-direction:column}
  .cta-btns .btn{width:100%;justify-content:center}
}

/* roulang page: category1 */
:root{
  --color-bg:#0e0a14;
  --color-bg-alt:#161020;
  --color-surface:#1e1730;
  --color-surface-2:#251d3a;
  --color-border:rgba(255,255,255,0.08);
  --color-border-strong:rgba(255,255,255,0.16);
  --color-text:#f4eef7;
  --color-text-muted:#b3a9c4;
  --color-text-dim:#807592;
  --color-primary:#ff3d7f;
  --color-primary-hover:#ff5c93;
  --color-accent:#8b5cf6;
  --color-accent-2:#22d3ee;
  --color-warn:#fbbf24;
  --gradient-primary:linear-gradient(135deg,#ff3d7f 0%,#8b5cf6 100%);
  --gradient-hero:linear-gradient(135deg,rgba(139,92,246,0.85) 0%,rgba(255,61,127,0.75) 100%);
  --gradient-card:linear-gradient(160deg,rgba(139,92,246,0.12) 0%,rgba(255,61,127,0.08) 100%);
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:20px;
  --radius-xl:28px;
  --shadow-sm:0 4px 12px rgba(0,0,0,0.25);
  --shadow:0 10px 30px rgba(0,0,0,0.35);
  --shadow-lg:0 20px 60px rgba(139,92,246,0.25);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:72px;
  --font-sans:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --container:1200px;
  --transition:0.28s cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--transition);}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
ul{list-style:none;padding:0;margin:0;}
h1,h2,h3,h4{margin:0 0 var(--space-2);line-height:1.25;font-weight:700;letter-spacing:-0.01em;}
h1{font-size:clamp(2rem,5vw,3.4rem);}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem);}
h3{font-size:1.25rem;}
p{margin:0 0 var(--space-2);color:var(--color-text-muted);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--space-3);}

/* Header */
header{position:sticky;top:0;z-index:100;background:rgba(14,10,20,0.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--color-border);}
header nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:var(--space-3);}
.logo{font-size:1.35rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-0.02em;flex-shrink:0;}
.nav-links{display:flex;gap:6px;align-items:center;}
.nav-links a{display:inline-block;padding:8px 14px;font-size:14px;color:var(--color-text-muted);border-radius:var(--radius-sm);transition:all var(--transition);position:relative;font-weight:500;}
.nav-links a:hover{color:var(--color-text);background:rgba(255,255,255,0.05);}
.nav-links a.active{color:var(--color-text);background:rgba(139,92,246,0.18);}
.nav-links a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--gradient-primary);border-radius:2px;}
.mobile-menu-btn{display:none;font-size:26px;color:var(--color-text);padding:6px 10px;border-radius:var(--radius-sm);}
.mobile-menu-btn:hover{background:rgba(255,255,255,0.05);}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;font-size:15px;font-weight:600;border-radius:999px;transition:all var(--transition);cursor:pointer;line-height:1;letter-spacing:0.01em;}
.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 8px 24px rgba(255,61,127,0.35);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,61,127,0.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:rgba(255,255,255,0.06);color:var(--color-text);border:1px solid var(--color-border-strong);}
.btn-ghost:hover{background:rgba(255,255,255,0.12);border-color:rgba(255,255,255,0.28);}
.btn:focus-visible{outline:2px solid var(--color-accent-2);outline-offset:3px;}

/* Badges */
.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;font-size:13px;font-weight:600;border-radius:999px;background:rgba(255,61,127,0.15);color:#ffb0cd;border:1px solid rgba(255,61,127,0.3);}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--color-primary);box-shadow:0 0 0 4px rgba(255,61,127,0.25);}

/* Hero banner */
.hero-cat{position:relative;padding:var(--space-6) 0;overflow:hidden;background:linear-gradient(180deg,rgba(14,10,20,0.4) 0%,rgba(14,10,20,0.9) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;border-bottom:1px solid var(--color-border);}
.hero-cat::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 400px at 15% 20%,rgba(139,92,246,0.3),transparent 60%),radial-gradient(500px 300px at 85% 80%,rgba(255,61,127,0.25),transparent 60%);pointer-events:none;}
.hero-cat-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr 1fr;gap:var(--space-5);align-items:center;}
.hero-cat h1{margin-top:var(--space-2);}
.hero-cat h1 span{background:var(--gradient-primary);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-cat .lead{font-size:1.05rem;color:var(--color-text-muted);max-width:560px;margin-bottom:var(--space-3);}
.hero-cta{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-3);}
.hero-meta{display:flex;flex-wrap:wrap;gap:var(--space-3);margin-top:var(--space-4);padding-top:var(--space-3);border-top:1px solid var(--color-border);}
.hero-meta-item{display:flex;flex-direction:column;}
.hero-meta-item strong{font-size:1.8rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-meta-item span{font-size:13px;color:var(--color-text-dim);margin-top:2px;}
.hero-visual{position:relative;height:440px;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--color-border-strong);}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(14,10,20,0.7) 100%);}
.hero-visual .visual-tag{position:absolute;top:20px;left:20px;z-index:2;padding:8px 14px;background:rgba(14,10,20,0.7);backdrop-filter:blur(10px);border-radius:999px;font-size:13px;font-weight:600;border:1px solid var(--color-border-strong);}
.hero-visual .visual-caption{position:absolute;bottom:24px;left:24px;right:24px;z-index:2;}
.hero-visual .visual-caption h3{color:#fff;margin-bottom:6px;}
.hero-visual .visual-caption p{color:rgba(255,255,255,0.85);margin:0;font-size:14px;}

/* Section base */
section{padding:var(--space-6) 0;}
.section-head{text-align:center;max-width:720px;margin:0 auto var(--space-5);}
.section-head .badge{margin-bottom:var(--space-2);}
.section-head p{font-size:1.02rem;}
.section-head-left{text-align:left;max-width:720px;margin-bottom:var(--space-4);}

/* Highlights grid */
.highlights{background:var(--color-bg-alt);}
.highlight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-3);}
.highlight-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-3);transition:all var(--transition);position:relative;overflow:hidden;}
.highlight-card::before{content:"";position:absolute;inset:0;background:var(--gradient-card);opacity:0;transition:opacity var(--transition);pointer-events:none;}
.highlight-card:hover{transform:translateY(-4px);border-color:rgba(139,92,246,0.4);box-shadow:var(--shadow);}
.highlight-card:hover::before{opacity:1;}
.highlight-icon{width:52px;height:52px;border-radius:14px;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:var(--space-2);position:relative;z-index:1;}
.highlight-card h3{position:relative;z-index:1;color:var(--color-text);}
.highlight-card p{position:relative;z-index:1;font-size:14.5px;margin:0;}

/* Showcase gallery */
.showcase-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-2);}
.showcase-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:3/4;background:var(--color-surface);cursor:pointer;transition:all var(--transition);border:1px solid var(--color-border);}
.showcase-card img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s cubic-bezier(.2,.7,.3,1);}
.showcase-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(14,10,20,0.9) 100%);}
.showcase-card:hover img{transform:scale(1.08);}
.showcase-card:hover{border-color:rgba(255,61,127,0.5);}
.showcase-meta{position:absolute;left:16px;right:16px;bottom:16px;z-index:2;}
.showcase-meta .tag-row{display:flex;gap:6px;margin-bottom:6px;flex-wrap:wrap;}
.showcase-meta .mini-tag{padding:3px 10px;font-size:11px;font-weight:600;background:rgba(255,255,255,0.15);backdrop-filter:blur(8px);border-radius:999px;color:#fff;}
.showcase-meta .mini-tag.hot{background:rgba(255,61,127,0.85);}
.showcase-meta h4{color:#fff;font-size:15px;margin:0 0 4px;}
.showcase-meta span{font-size:12px;color:rgba(255,255,255,0.75);}
.showcase-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:52px;height:52px;border-radius:50%;background:rgba(14,10,20,0.6);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:center;z-index:3;opacity:0;transition:opacity var(--transition);border:2px solid rgba(255,255,255,0.4);}
.showcase-card:hover .showcase-play{opacity:1;}
.showcase-play::before{content:"";width:0;height:0;border-left:14px solid #fff;border-top:9px solid transparent;border-bottom:9px solid transparent;margin-left:4px;}

/* Scenarios split */
.scenarios{background:var(--color-bg-alt);}
.scenario-list{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3);}
.scenario-item{display:flex;gap:var(--space-2);padding:var(--space-3);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);transition:all var(--transition);}
.scenario-item:hover{border-color:rgba(255,61,127,0.35);transform:translateY(-2px);}
.scenario-num{flex-shrink:0;width:44px;height:44px;border-radius:12px;background:rgba(255,61,127,0.15);border:1px solid rgba(255,61,127,0.3);display:flex;align-items:center;justify-content:center;font-weight:800;color:#ffb0cd;font-size:18px;}
.scenario-item h3{font-size:1.1rem;margin-bottom:6px;}
.scenario-item p{font-size:14.5px;margin:0;}

/* Workflow */
.workflow-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:var(--space-5);align-items:center;}
.workflow-img{position:relative;border-radius:var(--radius-xl);overflow:hidden;height:520px;box-shadow:var(--shadow-lg);border:1px solid var(--color-border-strong);}
.workflow-img img{width:100%;height:100%;object-fit:cover;}
.workflow-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(14,10,20,0.5) 100%);}
.workflow-steps{display:flex;flex-direction:column;gap:var(--space-2);}
.step{display:flex;gap:var(--space-2);align-items:flex-start;padding:var(--space-3);border-radius:var(--radius);background:var(--color-surface);border-left:3px solid var(--color-primary);transition:all var(--transition);}
.step:hover{background:var(--color-surface-2);transform:translateX(4px);}
.step-index{flex-shrink:0;width:34px;height:34px;border-radius:10px;background:var(--gradient-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;}
.step-body h4{margin:0 0 4px;font-size:1.05rem;}
.step-body p{margin:0;font-size:14px;}

/* Testimonials */
.voices{background:var(--color-bg-alt);}
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-3);}
.voice-card{padding:var(--space-3);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);position:relative;transition:all var(--transition);}
.voice-card::before{content:"“";position:absolute;top:12px;right:18px;font-size:60px;font-family:Georgia,serif;color:rgba(139,92,246,0.25);line-height:1;font-weight:700;}
.voice-card:hover{border-color:rgba(139,92,246,0.35);transform:translateY(-3px);box-shadow:var(--shadow);}
.voice-stars{color:var(--color-warn);letter-spacing:2px;margin-bottom:var(--space-1);font-size:15px;}
.voice-card p{font-size:14.5px;color:var(--color-text);margin-bottom:var(--space-2);}
.voice-user{display:flex;align-items:center;gap:12px;padding-top:var(--space-2);border-top:1px solid var(--color-border);}
.voice-avatar{width:40px;height:40px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:14px;}
.voice-user strong{display:block;font-size:14px;color:var(--color-text);}
.voice-user span{font-size:12px;color:var(--color-text-dim);}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden;transition:border-color var(--transition);}
.faq-item[open]{border-color:rgba(255,61,127,0.35);}
.faq-item summary{padding:20px 24px;cursor:pointer;font-weight:600;font-size:1.02rem;display:flex;justify-content:space-between;align-items:center;gap:var(--space-2);list-style:none;color:var(--color-text);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:24px;color:var(--color-primary);flex-shrink:0;transition:transform var(--transition);font-weight:400;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 24px 20px;color:var(--color-text-muted);font-size:14.5px;line-height:1.75;}

/* CTA */
.cta{background:var(--gradient-hero);position:relative;overflow:hidden;text-align:center;}
.cta::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover;opacity:0.15;pointer-events:none;}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto;}
.cta h2{color:#fff;margin-bottom:var(--space-2);}
.cta p{color:rgba(255,255,255,0.9);font-size:1.05rem;margin-bottom:var(--space-3);}
.cta .btn-primary{background:#fff;color:#8b5cf6;}
.cta .btn-primary:hover{background:#f4eef7;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:var(--space-2);}
.cta-note{margin-top:var(--space-3);color:rgba(255,255,255,0.75);font-size:13px;}

/* Footer */
footer{background:#0a0710;border-top:1px solid var(--color-border);padding:var(--space-5) 0 var(--space-3);}
.footer-content{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:var(--space-4);margin-bottom:var(--space-4);}
.footer-brand h3{background:var(--gradient-primary);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:1.35rem;margin-bottom:var(--space-2);}
.footer-brand p{font-size:14px;color:var(--color-text-muted);line-height:1.75;max-width:340px;}
.footer-links h4{font-size:0.95rem;color:var(--color-text);margin-bottom:var(--space-2);font-weight:600;}
.footer-links ul{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--color-text-dim);transition:color var(--transition);}
.footer-links a:hover{color:var(--color-primary);}
.footer-bottom{padding-top:var(--space-3);border-top:1px solid var(--color-border);text-align:center;}
.footer-bottom p{margin:0;font-size:13px;color:var(--color-text-dim);}

/* Responsive */
@media(max-width:1024px){
  .hero-cat-inner{grid-template-columns:1fr;gap:var(--space-4);}
  .hero-visual{height:360px;}
  .highlight-grid{grid-template-columns:repeat(2,1fr);}
  .showcase-grid{grid-template-columns:repeat(3,1fr);}
  .workflow-wrap{grid-template-columns:1fr;gap:var(--space-4);}
  .workflow-img{height:380px;}
  .voice-grid{grid-template-columns:repeat(2,1fr);}
  .footer-content{grid-template-columns:1fr 1fr;gap:var(--space-3);}
}
@media(max-width:768px){
  section{padding:var(--space-5) 0;}
  .hero-cat{padding:var(--space-5) 0;}
  .nav-links{position:fixed;top:72px;left:0;right:0;flex-direction:column;background:rgba(14,10,20,0.98);backdrop-filter:blur(20px);padding:var(--space-2);gap:4px;border-bottom:1px solid var(--color-border);transform:translateY(-120%);transition:transform 0.35s;z-index:99;align-items:stretch;}
  .nav-links.open{transform:translateY(0);}
  .nav-links a{width:100%;padding:14px 18px;border-radius:var(--radius-sm);}
  .nav-links a.active::after{display:none;}
  .mobile-menu-btn{display:inline-flex;}
  .scenario-list{grid-template-columns:1fr;}
  .showcase-grid{grid-template-columns:repeat(2,1fr);}
  .voice-grid{grid-template-columns:1fr;}
  .hero-meta{gap:var(--space-2);}
  .hero-meta-item strong{font-size:1.4rem;}
}
@media(max-width:520px){
  .container{padding:0 var(--space-2);}
  .highlight-grid{grid-template-columns:1fr;}
  .footer-content{grid-template-columns:1fr;}
  .hero-visual{height:280px;}
  .btn{padding:12px 22px;font-size:14px;}
  h1{font-size:1.9rem;}
  h2{font-size:1.5rem;}
}

/* roulang page: category2 */
:root{
    --primary:#e11d74;
    --primary-dark:#a5115a;
    --accent:#7c3aed;
    --gold:#f5b301;
    --bg:#0b0710;
    --bg-soft:#141020;
    --bg-card:#1c1730;
    --text:#f5f2fb;
    --muted:#a89fc0;
    --border:rgba(255,255,255,.08);
    --radius:16px;
    --radius-sm:10px;
    --shadow:0 20px 40px -20px rgba(225,29,116,.35);
    --shadow-soft:0 10px 30px -15px rgba(0,0,0,.6);
    --space:clamp(80px,10vw,120px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .25s ease}
a:hover{color:var(--primary)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* header */
header{
    position:sticky;top:0;z-index:100;
    background:rgba(11,7,16,.85);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--border);
}
header nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{
    font-size:22px;font-weight:800;letter-spacing:.5px;
    background:linear-gradient(90deg,var(--primary),var(--gold));
    -webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{
    display:inline-block;padding:8px 14px;border-radius:999px;
    font-size:14.5px;color:var(--muted);transition:all .25s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.active{
    color:#fff;background:linear-gradient(90deg,var(--primary),var(--accent));
    box-shadow:0 6px 20px -8px var(--primary);
}
.mobile-menu-btn{display:none;font-size:26px;color:#fff}

/* hero */
.hero{
    position:relative;
    padding:clamp(80px,12vw,140px) 0 clamp(70px,10vw,110px);
    background:
        linear-gradient(135deg,rgba(11,7,16,.85) 0%,rgba(11,7,16,.55) 60%,rgba(11,7,16,.9) 100%),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    overflow:hidden;
}
.hero::before{
    content:"";position:absolute;inset:0;
    background:radial-gradient(circle at 20% 30%,rgba(225,29,116,.35),transparent 55%),
               radial-gradient(circle at 80% 70%,rgba(124,58,237,.35),transparent 55%);
    pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:820px}
.hero-tag{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 16px;border-radius:999px;
    background:rgba(255,255,255,.06);border:1px solid var(--border);
    font-size:13px;color:var(--gold);margin-bottom:22px;
}
.hero-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px var(--gold)}
.hero h1{
    font-size:clamp(34px,5.2vw,60px);
    line-height:1.15;font-weight:800;letter-spacing:-.5px;
    margin-bottom:22px;
}
.hero h1 span{
    background:linear-gradient(90deg,var(--primary),var(--gold));
    -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:clamp(15px,1.6vw,18px);color:#d8d1e8;max-width:680px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 26px;border-radius:999px;font-weight:600;font-size:15px;
    transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-primary{
    background:linear-gradient(90deg,var(--primary),var(--primary-dark));
    color:#fff;box-shadow:var(--shadow);
}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 25px 45px -18px rgba(225,29,116,.55)}
.btn-ghost{background:rgba(255,255,255,.06);border:1px solid var(--border);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:720px}
.hero-stats .stat{padding:16px 18px;border-radius:var(--radius-sm);background:rgba(255,255,255,.04);border:1px solid var(--border)}
.hero-stats .num{font-size:26px;font-weight:800;color:#fff}
.hero-stats .num em{font-style:normal;font-size:14px;color:var(--muted);margin-left:2px}
.hero-stats .label{font-size:13px;color:var(--muted);margin-top:2px}

/* section base */
section{padding:var(--space) 0}
.section-head{max-width:720px;margin:0 auto 56px;text-align:center}
.section-head .eyebrow{
    display:inline-block;font-size:13px;letter-spacing:2px;
    color:var(--primary);font-weight:600;margin-bottom:12px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;line-height:1.25;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:16px}

/* quality strip */
.quality-strip{background:var(--bg-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:40px 0}
.quality-strip .row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.quality-strip .cell{padding:8px}
.quality-strip .cell strong{display:block;font-size:22px;font-weight:800;color:var(--gold);margin-bottom:4px}
.quality-strip .cell span{color:var(--muted);font-size:14px}

/* featured grid */
.featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.movie-card{
    background:var(--bg-card);border-radius:var(--radius);overflow:hidden;
    border:1px solid var(--border);transition:transform .3s,box-shadow .3s;
    display:flex;flex-direction:column;
}
.movie-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-soft)}
.movie-cover{position:relative;aspect-ratio:16/10;overflow:hidden}
.movie-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.movie-card:hover .movie-cover img{transform:scale(1.06)}
.movie-cover::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,transparent 50%,rgba(11,7,16,.85));
}
.movie-quality{
    position:absolute;top:12px;left:12px;z-index:2;
    padding:5px 10px;border-radius:6px;font-size:12px;font-weight:700;
    background:linear-gradient(90deg,var(--gold),#ffcd39);color:#0b0710;letter-spacing:.5px;
}
.movie-duration{
    position:absolute;bottom:12px;right:12px;z-index:2;
    padding:4px 10px;border-radius:6px;font-size:12px;
    background:rgba(0,0,0,.6);color:#fff;
}
.movie-body{padding:20px 22px;flex:1;display:flex;flex-direction:column}
.movie-body h3{font-size:18px;font-weight:700;margin-bottom:8px;line-height:1.4}
.movie-body p{color:var(--muted);font-size:14px;margin-bottom:14px;flex:1}
.movie-tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{
    padding:4px 10px;border-radius:6px;font-size:12px;
    background:rgba(225,29,116,.14);color:#f0a1c9;
}

/* tech spec */
.tech-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center}
.tech-visual{
    position:relative;border-radius:var(--radius);overflow:hidden;
    aspect-ratio:4/3;box-shadow:var(--shadow-soft);
}
.tech-visual img{width:100%;height:100%;object-fit:cover}
.tech-visual::after{
    content:"4K · HDR · Dolby";
    position:absolute;bottom:20px;left:20px;
    padding:8px 14px;border-radius:8px;
    background:rgba(0,0,0,.55);backdrop-filter:blur(8px);
    color:var(--gold);font-weight:700;letter-spacing:1px;font-size:13px;
}
.tech-list{display:flex;flex-direction:column;gap:22px}
.tech-item{display:flex;gap:18px;padding:18px;border-radius:var(--radius-sm);background:var(--bg-soft);border:1px solid var(--border)}
.tech-icon{
    flex:none;width:52px;height:52px;border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--primary),var(--accent));
    font-size:22px;color:#fff;
}
.tech-item h4{font-size:17px;margin-bottom:6px}
.tech-item p{color:var(--muted);font-size:14px;line-height:1.6}

/* device compat */
.device-section{background:var(--bg-soft)}
.device-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.device{
    padding:28px 22px;border-radius:var(--radius);
    background:var(--bg-card);border:1px solid var(--border);text-align:center;
    transition:border-color .25s,transform .25s;
}
.device:hover{border-color:var(--primary);transform:translateY(-4px)}
.device .icon{
    font-size:32px;margin-bottom:14px;
    display:inline-flex;width:60px;height:60px;border-radius:14px;
    align-items:center;justify-content:center;
    background:rgba(225,29,116,.12);color:var(--primary);
}
.device h4{font-size:16px;margin-bottom:8px}
.device p{color:var(--muted);font-size:13.5px}

/* workflow */
.workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.workflow::before{
    content:"";position:absolute;top:36px;left:8%;right:8%;height:2px;
    background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);
    z-index:0;
}
.step{position:relative;z-index:1;text-align:center;padding:0 14px}
.step-num{
    display:inline-flex;width:72px;height:72px;border-radius:50%;
    align-items:center;justify-content:center;margin-bottom:18px;
    background:var(--bg-card);border:2px solid var(--primary);
    font-size:24px;font-weight:800;color:var(--gold);
    box-shadow:0 0 0 6px rgba(11,7,16,1);
}
.step h4{font-size:16px;margin-bottom:8px}
.step p{color:var(--muted);font-size:13.5px;line-height:1.6}

/* comparison table */
.compare-section{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-soft) 100%)}
.compare{
    width:100%;border-collapse:separate;border-spacing:0;
    background:var(--bg-card);border-radius:var(--radius);overflow:hidden;
    border:1px solid var(--border);
}
.compare th,.compare td{padding:18px 20px;text-align:left;border-bottom:1px solid var(--border);font-size:15px}
.compare th{background:rgba(255,255,255,.03);font-weight:700;color:#fff;font-size:14px;letter-spacing:.5px}
.compare th:first-child,.compare td:first-child{color:var(--muted)}
.compare .col-hd{background:linear-gradient(180deg,rgba(225,29,116,.14),transparent);color:var(--gold);font-weight:700}
.compare tr:last-child td{border-bottom:none}
.compare .ok{color:#4ade80}
.compare .no{color:#94879f}

/* FAQ */
.faq-list{max-width:840px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
    background:var(--bg-card);border:1px solid var(--border);
    border-radius:var(--radius-sm);overflow:hidden;transition:border-color .25s;
}
.faq-item:hover{border-color:rgba(225,29,116,.4)}
.faq-q{
    width:100%;padding:20px 24px;text-align:left;
    display:flex;justify-content:space-between;align-items:center;gap:20px;
    font-size:16px;font-weight:600;color:#fff;
}
.faq-q::after{content:"+";font-size:22px;color:var(--primary);transition:transform .25s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px;color:var(--muted)}
.faq-item.open .faq-a{max-height:260px;padding:0 24px 22px}

/* CTA */
.cta{
    position:relative;
    background:
        linear-gradient(135deg,rgba(225,29,116,.85),rgba(124,58,237,.8)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
    padding:80px 0;overflow:hidden;
}
.cta-inner{max-width:760px;margin:0 auto;text-align:center;position:relative;z-index:1}
.cta h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;color:#fff;margin-bottom:18px;line-height:1.3}
.cta p{color:rgba(255,255,255,.9);font-size:16px;margin-bottom:32px}
.cta .btn-primary{background:#fff;color:var(--primary-dark)}
.cta .btn-primary:hover{background:#fff;color:var(--primary-dark)}
.cta .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}

/* footer */
footer{background:#070409;padding:70px 0 30px;border-top:1px solid var(--border)}
.footer-content{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand h3{
    font-size:20px;margin-bottom:14px;
    background:linear-gradient(90deg,var(--primary),var(--gold));
    -webkit-background-clip:text;background-clip:text;color:transparent;
}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.7;max-width:340px}
.footer-links h4{font-size:15px;margin-bottom:16px;color:#fff}
.footer-links ul{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--muted);font-size:14px}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{padding-top:24px;border-top:1px solid var(--border);text-align:center;color:var(--muted);font-size:13px}

/* responsive */
@media(max-width:1024px){
    .featured-grid{grid-template-columns:repeat(2,1fr)}
    .device-grid{grid-template-columns:repeat(2,1fr)}
    .tech-wrap{grid-template-columns:1fr;gap:40px}
    .workflow{grid-template-columns:repeat(2,1fr);gap:32px 20px}
    .workflow::before{display:none}
    .footer-content{grid-template-columns:1fr 1fr;gap:32px}
    .hero-stats{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
    .nav-links{
        display:none;position:absolute;top:72px;left:0;right:0;
        flex-direction:column;padding:16px;gap:6px;
        background:rgba(11,7,16,.98);border-bottom:1px solid var(--border);
    }
    .nav-links.open{display:flex}
    .nav-links a{padding:12px 16px;border-radius:10px}
    .mobile-menu-btn{display:inline-block}
    .quality-strip .row{grid-template-columns:repeat(2,1fr);gap:20px}
    .hero-actions{flex-direction:column;align-items:stretch}
    .hero-actions .btn{width:100%}
}
@media(max-width:520px){
    .featured-grid{grid-template-columns:1fr}
    .device-grid{grid-template-columns:1fr}
    .workflow{grid-template-columns:1fr}
    .footer-content{grid-template-columns:1fr}
    .hero-stats{grid-template-columns:1fr 1fr}
    .compare th,.compare td{padding:14px 12px;font-size:13.5px}
    .container{padding:0 18px}
}

/* roulang page: category3 */
:root {
            --c-bg: #0e0a14;
            --c-bg-soft: #16101f;
            --c-surface: #1d1629;
            --c-surface-2: #241b33;
            --c-border: #2f2340;
            --c-text: #f4eef8;
            --c-muted: #a094b3;
            --c-primary: #e8378c;
            --c-primary-2: #ff6ab0;
            --c-accent: #f7c948;
            --c-accent-2: #6a5cff;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 4px 14px rgba(0,0,0,.28);
            --shadow: 0 12px 40px rgba(0,0,0,.4);
            --shadow-glow: 0 10px 40px rgba(232,55,140,.28);
            --gap: 24px;
            --tr: .28s ease;
        }

        *,*::before,*::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,"Noto Sans SC",sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--c-text);
            background: var(--c-bg);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--tr); }
        button { font-family: inherit; cursor: pointer; border: 0; }
        ul { margin: 0; padding: 0; list-style: none; }
        h1,h2,h3,h4 { margin: 0 0 .5em; line-height: 1.25; letter-spacing: .01em; }

        .container { width: min(1200px, 92%); margin: 0 auto; }

        /* Header */
        header {
            position: sticky; top: 0; z-index: 50;
            background: rgba(14,10,20,.85);
            backdrop-filter: saturate(160%) blur(12px);
            border-bottom: 1px solid var(--c-border);
        }
        header nav {
            display: flex; align-items: center; justify-content: space-between;
            padding: 16px 0;
            gap: 20px;
        }
        .logo {
            font-size: 22px; font-weight: 800;
            background: linear-gradient(90deg,var(--c-primary),var(--c-accent));
            -webkit-background-clip: text; background-clip: text; color: transparent;
            letter-spacing: .04em;
        }
        .nav-links { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
        .nav-links a {
            display: inline-block;
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 15px;
            color: var(--c-muted);
            transition: all var(--tr);
        }
        .nav-links a:hover { color: var(--c-text); background: var(--c-surface); }
        .nav-links a.active {
            color: #fff;
            background: linear-gradient(90deg,var(--c-primary),var(--c-primary-2));
            box-shadow: var(--shadow-glow);
        }
        .mobile-menu-btn {
            display: none;
            background: var(--c-surface); color: var(--c-text);
            width: 42px; height: 42px; border-radius: 12px; font-size: 20px;
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 90px 0 80px;
            overflow: hidden;
            background:
                linear-gradient(180deg, rgba(14,10,20,.4) 0%, rgba(14,10,20,.85) 65%, var(--c-bg) 100%),
                url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
        }
        .hero::before {
            content: "";
            position: absolute; inset: 0;
            background:
                radial-gradient(700px 400px at 15% 30%, rgba(232,55,140,.28), transparent 60%),
                radial-gradient(600px 380px at 85% 70%, rgba(106,92,255,.22), transparent 60%);
            pointer-events: none;
        }
        .hero-inner {
            position: relative; z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 6px 14px;
            background: rgba(232,55,140,.14);
            color: var(--c-primary-2);
            border: 1px solid rgba(232,55,140,.35);
            border-radius: 999px;
            font-size: 13px; font-weight: 600;
            margin-bottom: 22px;
        }
        .hero-badge::before {
            content: ""; width: 8px; height: 8px; border-radius: 50%;
            background: var(--c-primary-2); box-shadow: 0 0 12px var(--c-primary-2);
        }
        .hero h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 800;
            letter-spacing: .02em;
            margin-bottom: 20px;
        }
        .hero h1 em {
            font-style: normal;
            background: linear-gradient(90deg,var(--c-primary),var(--c-accent));
            -webkit-background-clip: text; background-clip: text; color: transparent;
        }
        .hero p.lead {
            font-size: 18px; color: var(--c-muted); max-width: 560px;
            margin-bottom: 32px;
        }
        .hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 26px;
            font-size: 15px; font-weight: 600;
            border-radius: 12px;
            transition: all var(--tr);
            border: 1px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(90deg,var(--c-primary),var(--c-primary-2));
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(232,55,140,.44); }
        .btn-ghost {
            background: rgba(255,255,255,.04);
            color: var(--c-text);
            border-color: var(--c-border);
        }
        .btn-ghost:hover { background: var(--c-surface); border-color: var(--c-primary); }

        .hero-meta {
            display: flex; gap: 28px; margin-top: 38px; flex-wrap: wrap;
        }
        .hero-meta-item strong {
            display: block;
            font-size: 26px;
            background: linear-gradient(90deg,var(--c-primary-2),var(--c-accent));
            -webkit-background-clip: text; background-clip: text; color: transparent;
            font-weight: 800;
        }
        .hero-meta-item span { color: var(--c-muted); font-size: 13px; }

        .hero-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--c-border);
            box-shadow: var(--shadow);
            aspect-ratio: 4/5;
            background: var(--c-surface);
        }
        .hero-card img {
            width: 100%; height: 100%; object-fit: cover;
            transition: transform 1.2s ease;
        }
        .hero-card:hover img { transform: scale(1.06); }
        .hero-card-overlay {
            position: absolute; left: 0; right: 0; bottom: 0;
            padding: 22px;
            background: linear-gradient(180deg, transparent 0%, rgba(14,10,20,.9) 90%);
        }
        .hero-card-overlay h4 { font-size: 18px; margin-bottom: 6px; }
        .hero-card-overlay p { color: var(--c-muted); font-size: 13px; margin: 0; }
        .hero-card-tags { display: flex; gap: 8px; margin-top: 12px; }
        .tag {
            padding: 4px 10px; border-radius: 6px;
            background: rgba(255,255,255,.08);
            color: var(--c-text); font-size: 12px;
        }
        .tag.hot { background: rgba(247,201,72,.14); color: var(--c-accent); }

        /* Section base */
        section.block { padding: 88px 0; position: relative; }
        section.block.alt { background: var(--c-bg-soft); }
        .section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
        .section-eyebrow {
            display: inline-block; font-size: 13px; letter-spacing: .28em;
            color: var(--c-primary-2); text-transform: uppercase; margin-bottom: 12px;
            font-weight: 700;
        }
        .section-head h2 { font-size: clamp(28px,3.4vw,40px); font-weight: 800; }
        .section-head p { color: var(--c-muted); font-size: 16px; margin-top: 12px; }

        /* Style grid */
        .style-grid {
            display: grid; grid-template-columns: repeat(3,1fr); gap: var(--gap);
        }
        .style-card {
            position: relative; overflow: hidden;
            border-radius: var(--radius);
            border: 1px solid var(--c-border);
            background: var(--c-surface);
            transition: transform var(--tr), border-color var(--tr), box-shadow var(--tr);
            aspect-ratio: 3/4;
        }
        .style-card img {
            width: 100%; height: 100%; object-fit: cover;
            transition: transform .8s ease, filter var(--tr);
            filter: brightness(.78);
        }
        .style-card:hover { transform: translateY(-6px); border-color: var(--c-primary); box-shadow: var(--shadow); }
        .style-card:hover img { transform: scale(1.08); filter: brightness(.9); }
        .style-card-body {
            position: absolute; inset: 0;
            display: flex; flex-direction: column; justify-content: flex-end;
            padding: 24px;
            background: linear-gradient(180deg, transparent 40%, rgba(14,10,20,.92) 95%);
        }
        .style-card-body .tag { align-self: flex-start; margin-bottom: 12px; }
        .style-card-body h3 { font-size: 20px; margin-bottom: 8px; }
        .style-card-body p { color: var(--c-muted); font-size: 14px; margin: 0 0 14px; }
        .style-card-body .meta { display: flex; gap: 14px; color: var(--c-muted); font-size: 12px; }
        .style-card-body .meta span::before { content: "•"; margin-right: 6px; color: var(--c-primary); }

        /* Features */
        .feature-grid {
            display: grid; grid-template-columns: repeat(4,1fr); gap: var(--gap);
        }
        .feature-card {
            padding: 28px 24px;
            border-radius: var(--radius);
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            transition: all var(--tr);
        }
        .feature-card:hover { transform: translateY(-4px); border-color: var(--c-primary); box-shadow: var(--shadow-sm); }
        .feature-icon {
            width: 48px; height: 48px; border-radius: 12px;
            display: grid; place-items: center;
            background: linear-gradient(135deg, rgba(232,55,140,.2), rgba(106,92,255,.2));
            color: var(--c-primary-2);
            font-size: 22px; margin-bottom: 18px;
        }
        .feature-card h3 { font-size: 17px; margin-bottom: 8px; }
        .feature-card p { color: var(--c-muted); font-size: 14px; margin: 0; }

        /* Scenario */
        .scenario-wrap {
            display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
        }
        .scenario-visual {
            border-radius: var(--radius-lg); overflow: hidden;
            border: 1px solid var(--c-border);
            aspect-ratio: 5/4;
            position: relative;
        }
        .scenario-visual img { width: 100%; height: 100%; object-fit: cover; }
        .scenario-visual::after {
            content: ""; position: absolute; inset: 0;
            background: linear-gradient(120deg, rgba(232,55,140,.15), transparent 60%);
        }
        .scenario-list { display: flex; flex-direction: column; gap: 18px; }
        .scenario-item {
            display: flex; gap: 18px; padding: 20px;
            background: var(--c-surface);
            border-radius: var(--radius);
            border: 1px solid var(--c-border);
            transition: all var(--tr);
        }
        .scenario-item:hover { border-color: var(--c-primary); transform: translateX(4px); }
        .scenario-num {
            width: 44px; height: 44px; min-width: 44px;
            border-radius: 12px;
            display: grid; place-items: center;
            background: linear-gradient(135deg,var(--c-primary),var(--c-accent-2));
            color: #fff; font-weight: 800; font-size: 18px;
        }
        .scenario-item h4 { font-size: 16px; margin-bottom: 6px; }
        .scenario-item p { color: var(--c-muted); font-size: 14px; margin: 0; }

        /* Process */
        .process-grid {
            display: grid; grid-template-columns: repeat(4,1fr); gap: var(--gap);
            position: relative;
        }
        .process-step {
            padding: 30px 24px;
            border-radius: var(--radius);
            background: var(--c-surface);
            border: 1px solid var(--c-border);
            position: relative;
            transition: all var(--tr);
        }
        .process-step:hover { transform: translateY(-4px); border-color: var(--c-accent); }
        .process-step .step-no {
            font-size: 40px; font-weight: 900;
            background: linear-gradient(90deg,var(--c-primary),var(--c-accent));
            -webkit-background-clip: text; background-clip: text; color: transparent;
            line-height: 1;
            margin-bottom: 14px;
        }
        .process-step h4 { font-size: 17px; margin-bottom: 8px; }
        .process-step p { color: var(--c-muted); font-size: 14px; margin: 0; }

        /* Highlights row */
        .highlight-row {
            display: grid; grid-template-columns: repeat(3,1fr); gap: var(--gap);
        }
        .highlight-box {
            padding: 30px;
            border-radius: var(--radius);
            background: linear-gradient(160deg, var(--c-surface) 0%, var(--c-surface-2) 100%);
            border: 1px solid var(--c-border);
        }
        .highlight-box strong.num {
            display: block; font-size: 40px; font-weight: 900;
            background: linear-gradient(90deg,var(--c-primary-2),var(--c-accent));
            -webkit-background-clip: text; background-clip: text; color: transparent;
        }
        .highlight-box h4 { font-size: 17px; margin: 10px 0 8px; }
        .highlight-box p { color: var(--c-muted); font-size: 14px; margin: 0; }

        /* FAQ */
        .faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
        .faq-item {
            border: 1px solid var(--c-border);
            background: var(--c-surface);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color var(--tr);
        }
        .faq-item[open] { border-color: var(--c-primary); }
        .faq-item summary {
            list-style: none;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            display: flex; justify-content: space-between; align-items: center; gap: 20px;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: "+";
            width: 28px; height: 28px; border-radius: 50%;
            display: grid; place-items: center;
            background: rgba(232,55,140,.14); color: var(--c-primary-2);
            font-size: 18px; font-weight: 700;
            transition: transform var(--tr);
        }
        .faq-item[open] summary::after { content: "−"; transform: rotate(180deg); }
        .faq-item .faq-body { padding: 0 24px 22px; color: var(--c-muted); font-size: 15px; }

        /* CTA */
        .cta-panel {
            position: relative; overflow: hidden;
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            background:
                linear-gradient(120deg, rgba(14,10,20,.65), rgba(14,10,20,.35)),
                url('/assets/images/backpic/back-1.webp') center/cover;
            border: 1px solid var(--c-border);
            display: grid; grid-template-columns: 1.4fr .6fr; gap: 32px; align-items: center;
        }
        .cta-panel h2 { font-size: clamp(24px,3vw,34px); font-weight: 800; }
        .cta-panel p { color: #d8cfe4; margin: 12px 0 0; }
        .cta-actions { display: flex; flex-direction: column; gap: 12px; }
        .cta-actions .btn { justify-content: center; }

        /* Footer */
        footer {
            background: #0a0710;
            border-top: 1px solid var(--c-border);
            padding: 64px 0 0;
            margin-top: 40px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: 1.4fr repeat(3, 1fr);
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand h3 {
            font-size: 20px;
            background: linear-gradient(90deg,var(--c-primary),var(--c-accent));
            -webkit-background-clip: text; background-clip: text; color: transparent;
            margin-bottom: 14px;
        }
        .footer-brand p { color: var(--c-muted); font-size: 14px; margin: 0; max-width: 340px; }
        .footer-links h4 { color: var(--c-text); font-size: 15px; margin-bottom: 18px; }
        .footer-links ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-links a { color: var(--c-muted); font-size: 14px; }
        .footer-links a:hover { color: var(--c-primary-2); }
        .footer-bottom {
            border-top: 1px solid var(--c-border);
            padding: 22px 0 26px;
            text-align: center;
            color: var(--c-muted);
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner { grid-template-columns: 1fr; }
            .hero-card { max-width: 380px; margin: 0 auto; }
            .style-grid { grid-template-columns: repeat(2,1fr); }
            .feature-grid { grid-template-columns: repeat(2,1fr); }
            .process-grid { grid-template-columns: repeat(2,1fr); }
            .scenario-wrap { grid-template-columns: 1fr; }
            .cta-panel { grid-template-columns: 1fr; padding: 44px 32px; }
            .footer-content { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .mobile-menu-btn { display: inline-flex; align-items: center; justify-content: center; }
            .nav-links {
                display: none;
                position: absolute; top: 100%; left: 0; right: 0;
                background: var(--c-bg-soft);
                border-bottom: 1px solid var(--c-border);
                flex-direction: column; padding: 12px 16px 20px; gap: 4px;
            }
            .nav-links.open { display: flex; }
            .nav-links a { display: block; width: 100%; }
            header nav { position: relative; }
            .hero { padding: 60px 0 50px; }
            .highlight-row { grid-template-columns: 1fr; }
            section.block { padding: 60px 0; }
        }
        @media (max-width: 520px) {
            .style-grid { grid-template-columns: 1fr; }
            .feature-grid { grid-template-columns: 1fr; }
            .process-grid { grid-template-columns: 1fr; }
            .footer-content { grid-template-columns: 1fr; gap: 30px; }
            .hero-meta { gap: 20px; }
            .hero-cta { flex-direction: column; align-items: stretch; }
            .btn { justify-content: center; }
        }