/* roulang page: index */
:root {
            --primary: #8a1253;
            --primary-dark: #5e0b38;
            --primary-light: #c2186b;
            --accent: #ff6d9b;
            --accent-warm: #ff9e40;
            --bg: #f7f3f6;
            --bg-card: #ffffff;
            --bg-dark: #1c0b14;
            --bg-dark-2: #2b1020;
            --text: #2b1a24;
            --text-light: #6b4c5e;
            --text-lighter: #9a7d8e;
            --border: #e8d8e0;
            --border-strong: #d4bcc9;
            --shadow-sm: 0 2px 8px rgba(90, 40, 70, 0.06);
            --shadow-md: 0 6px 24px rgba(90, 40, 70, 0.1);
            --shadow-lg: 0 16px 48px rgba(90, 40, 70, 0.16);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-xxl: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        a:hover {
            color: var(--primary-light);
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        /* ========== Header / Nav ========== */
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 45%, var(--primary-light) 100%);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(60, 10, 40, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-sm);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo:hover {
            color: #fff;
            opacity: 0.9;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: rgba(255, 255, 255, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            color: rgba(255, 255, 255, 0.82);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.14);
        }

        .main-nav a.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.2);
            font-weight: 600;
        }

        .main-nav a.active::after {
            content: "";
            position: absolute;
            bottom: 3px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-warm);
        }

        .nav-cta {
            background: #fff !important;
            color: var(--primary) !important;
            font-weight: 700 !important;
            padding: 9px 22px !important;
            border-radius: 50px !important;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
            letter-spacing: 0.02em !important;
        }

        .nav-cta:hover {
            background: #ffe9f0 !important;
            color: var(--primary-dark) !important;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.12);
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: #fff;
            border-radius: 3px;
            transition: all var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ========== Hero ========== */
        .hero {
            background-image: linear-gradient(rgba(70, 15, 45, 0.82), rgba(55, 10, 35, 0.78)), url('/assets/images/bb9a6292c43d380d.webp');
            background-size: cover;
            background-position: center;
            padding: var(--space-xxl) 0 var(--space-xl);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .hero::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 120px;
            background: var(--bg);
            border-radius: 50% 50% 0 0 / 80px 80px 0 0;
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--space-xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.28);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            color: rgba(255, 255, 255, 0.92);
            margin-bottom: var(--space-sm);
        }

        .hero-badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-warm);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.5); }
        }

        .hero h1 {
            font-size: 2.6rem;
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: -0.015em;
            margin-bottom: var(--space-sm);
        }

        .hero h1 .highlight {
            color: var(--accent-warm);
        }

        .hero-desc {
            font-size: 1.05rem;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: var(--space-md);
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            flex-wrap: wrap;
            margin-bottom: var(--space-md);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            text-decoration: none !important;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-warm) 100%);
            color: #fff !important;
            box-shadow: 0 8px 28px rgba(255, 109, 155, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(255, 109, 155, 0.5);
            color: #fff !important;
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.14);
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            color: #fff !important;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.24);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 14px 34px;
            font-size: 1rem;
        }

        .hero-stats {
            display: flex;
            gap: var(--space-md);
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
        }

        .hero-stat-label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.65);
        }

        .hero-panel {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.3);
        }

        .hero-panel-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
            color: #fff;
        }

        .reward-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
        }

        .reward-row:last-child {
            border-bottom: none;
        }

        .reward-value {
            font-weight: 700;
            color: var(--accent-warm);
        }

        .progress-wrap {
            margin: var(--space-md) 0 var(--space-sm);
        }

        .progress-label {
            display: flex;
            justify-content: space-between;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 6px;
        }

        .progress-bar {
            width: 100%;
            height: 10px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.15);
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            border-radius: 50px;
            background: linear-gradient(90deg, var(--accent) 0%, var(--accent-warm) 100%);
            width: 62%;
            transition: width 0.8s ease;
        }

        /* ========== Sections ========== */
        .section {
            padding: var(--space-xl) 0;
            position: relative;
        }

        .section-alt {
            background: #fdf8fb;
        }

        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-header {
            margin-bottom: var(--space-lg);
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(194, 24, 107, 0.1);
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: var(--space-xs);
        }

        .section-dark .section-label {
            color: var(--accent);
            background: rgba(255, 109, 155, 0.15);
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.35;
            margin-bottom: var(--space-xs);
            color: var(--text);
        }

        .section-desc {
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text-light);
            max-width: 720px;
        }

        /* ========== Cards ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .card-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-md);
        }

        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(194, 24, 107, 0.12) 0%, rgba(255, 109, 155, 0.2) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: var(--space-sm);
        }

        .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }

        .card-text {
            font-size: 0.88rem;
            line-height: 1.7;
            color: var(--text-light);
        }

        .card-img {
            margin-bottom: var(--space-sm);
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 16/9;
            width: 100%;
        }

        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

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

        /* ========== Badge / Tag ========== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .badge-hot {
            background: #fff0f5;
            color: #c2186b;
        }

        .badge-new {
            background: #fff8e8;
            color: #b26a00;
        }

        .badge-green {
            background: #ecfef3;
            color: #0d8a4d;
        }

        .badge-purple {
            background: #f3f0ff;
            color: #5e35b1;
        }

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

        .tag-cloud a {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-light);
            font-size: 0.82rem;
            transition: all var(--transition);
        }

        .tag-cloud a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #fff5f9;
        }

        /* ========== Lists ========== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .content-item {
            display: flex;
            gap: var(--space-md);
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--space-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            align-items: center;
        }

        .content-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--border-strong);
            transform: translateX(4px);
        }

        .content-item-thumb {
            width: 160px;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 16/9;
        }

        .content-item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .content-item-body {
            flex: 1;
            min-width: 0;
        }

        .content-item-title {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
            line-height: 1.45;
        }

        .content-item-meta {
            font-size: 0.78rem;
            color: var(--text-lighter);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .content-item-excerpt {
            font-size: 0.85rem;
            color: var(--text-light);
            line-height: 1.6;
            margin-top: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ========== Tiers ========== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
            align-items: stretch;
        }

        .tier-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 2px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .tier-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .tier-card.featured {
            border-color: var(--primary);
            background: linear-gradient(180deg, #fff5f9 0%, #fff 100%);
            box-shadow: var(--shadow-md);
        }

        .tier-card .badge {
            position: absolute;
            top: -11px;
            left: 50%;
            transform: translateX(-50%);
        }

        .tier-name {
            font-size: 1.05rem;
            font-weight: 800;
            margin-bottom: 4px;
        }

        .tier-desc {
            font-size: 0.82rem;
            color: var(--text-light);
            margin-bottom: var(--space-sm);
        }

        .tier-benefits {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--space-sm);
            flex: 1;
        }

        .tier-benefits li {
            font-size: 0.85rem;
            color: var(--text-light);
            padding: 5px 0;
            border-bottom: 1px dashed var(--border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tier-benefits li::before {
            content: "✓";
            color: var(--primary);
            font-weight: 700;
        }

        .tier-btn {
            display: block;
            text-align: center;
            padding: 11px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
        }

        .tier-btn-primary {
            background: var(--primary);
            color: #fff !important;
        }

        .tier-btn-primary:hover {
            background: var(--primary-dark);
        }

        .tier-btn-outline {
            background: #fff;
            border: 1.5px solid var(--primary);
            color: var(--primary) !important;
        }

        .tier-btn-outline:hover {
            background: #fff5f9;
        }

        /* ========== Steps ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .step-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }

        .step-card:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin: 0 auto var(--space-sm);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-strong);
        }

        .faq-question {
            padding: var(--space-sm) var(--space-md);
            font-weight: 700;
            font-size: 0.95rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            color: var(--text);
        }

        .faq-answer {
            padding: 0 var(--space-md) var(--space-sm);
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition);
            font-size: 1.2rem;
            color: var(--primary);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        /* ========== CTA Band ========== */
        .cta-band {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: rgba(255, 255, 255, 0.06);
            transform: rotate(25deg);
            pointer-events: none;
        }

        .cta-band h2 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: var(--space-xs);
        }

        .cta-band p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto var(--space-md);
        }

        .btn-white {
            background: #fff;
            color: var(--primary) !important;
            font-weight: 700;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
        }

        /* ========== Testimonial ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .testimonial-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            color: #fff;
        }

        .testimonial-text {
            font-size: 0.88rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: var(--space-sm);
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
        }

        .testimonial-name {
            font-size: 0.85rem;
            font-weight: 600;
        }

        .testimonial-role {
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.55);
        }

        /* ========== Security ========== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }

        .security-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: var(--space-md);
            border: 1px solid var(--border);
            text-align: center;
            transition: all var(--transition);
        }

        .security-card:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .security-icon {
            font-size: 1.6rem;
            margin-bottom: var(--space-xs);
        }

        .security-title {
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 4px;
        }

        .security-text {
            font-size: 0.8rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== Scene ========== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }

        .scene-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

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

        .scene-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

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

        .scene-body {
            padding: var(--space-sm);
        }

        .scene-title {
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 4px;
        }

        .scene-desc {
            font-size: 0.82rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: var(--space-xl) 0 var(--space-md);
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }

        .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-xs);
        }

        .footer-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.05em;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.82rem;
            padding: 4px 0;
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--space-sm);
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .card-grid, .card-grid-4, .tier-grid, .steps-grid, .testimonial-grid, .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--primary-dark);
                flex-direction: column;
                padding: var(--space-sm);
                gap: 2px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
            }

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

            .main-nav a {
                padding: 10px 18px;
                text-align: center;
            }

            .nav-toggle {
                display: flex;
            }

            .hero {
                padding: var(--space-lg) 0 var(--space-xl);
            }

            .hero h1 {
                font-size: 1.8rem;
            }

            .hero-desc {
                font-size: 0.95rem;
            }

            .section {
                padding: var(--space-lg) 0;
            }

            .section-title {
                font-size: 1.45rem;
            }

            .card-grid, .card-grid-2, .card-grid-4, .tier-grid, .steps-grid, .testimonial-grid, .scene-grid, .security-grid {
                grid-template-columns: 1fr;
            }

            .content-item {
                flex-direction: column;
            }

            .content-item-thumb {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .hero-panel {
                padding: var(--space-md);
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.5rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                width: 100%;
                text-align: center;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .card {
                padding: var(--space-sm);
            }

            .tier-grid, .steps-grid, .testimonial-grid, .scene-grid, .security-grid {
                gap: var(--space-sm);
            }
        }

/* roulang page: article */
:root {
            --primary: #8a1253;
            --primary-dark: #5e0b38;
            --primary-light: #c2186b;
            --accent: #ff6d9b;
            --accent-warm: #ff9e40;
            --bg: #f7f3f6;
            --bg-card: #ffffff;
            --bg-dark: #1c0b14;
            --bg-dark-2: #2b1020;
            --text: #2b1a24;
            --text-light: #6b4c5e;
            --text-lighter: #9a7d8e;
            --border: #e8d8e0;
            --border-strong: #d4bcc9;
            --shadow-sm: 0 2px 8px rgba(90, 40, 70, 0.06);
            --shadow-md: 0 6px 24px rgba(90, 40, 70, 0.1);
            --shadow-lg: 0 16px 48px rgba(90, 40, 70, 0.16);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-xxl: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-md);
        }

        /* ========== Header / Nav ========== */
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 45%, var(--primary-light) 100%);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(60, 10, 40, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-sm);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo:hover {
            color: #fff;
            opacity: 0.9;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: rgba(255, 255, 255, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            color: rgba(255, 255, 255, 0.82);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.14);
        }
        .main-nav a.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.2);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: "";
            position: absolute;
            bottom: 3px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-warm);
        }
        .nav-cta {
            background: #fff !important;
            color: var(--primary) !important;
            font-weight: 700 !important;
            padding: 9px 22px !important;
            border-radius: 50px !important;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
            letter-spacing: 0.02em !important;
        }
        .nav-cta:hover {
            background: #ffe9f0 !important;
            color: var(--primary-dark) !important;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.12);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: #fff;
            border-radius: 3px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            padding: var(--space-md) 0 var(--space-sm);
            background: var(--bg);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--primary-light);
        }
        .breadcrumb .sep {
            color: var(--border-strong);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--text-lighter);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== Article Hero ========== */
        .article-hero {
            padding: var(--space-lg) 0 var(--space-lg);
            background: var(--bg);
        }
        .article-hero-inner {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: var(--space-xl);
            align-items: center;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }
        .article-hero-text {
            padding: var(--space-xl) var(--space-lg);
        }
        .article-hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: var(--space-sm);
        }
        .article-hero-tags .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, rgba(138, 18, 83, 0.1), rgba(194, 24, 107, 0.16));
            color: var(--primary);
        }
        .article-hero-tags .tag-accent {
            background: linear-gradient(135deg, rgba(255, 109, 155, 0.18), rgba(255, 158, 64, 0.18));
            color: var(--primary-dark);
        }
        .article-hero h1 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            line-height: 1.4;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 var(--space-sm);
            letter-spacing: 0.01em;
        }
        .article-hero-excerpt {
            font-size: 1.02rem;
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: var(--space-md);
        }
        .article-hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: var(--space-sm);
            font-size: 0.86rem;
            color: var(--text-lighter);
        }
        .article-hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero-meta .meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--border-strong);
            flex-shrink: 0;
        }
        .article-hero-image {
            position: relative;
            min-height: 340px;
            height: 100%;
        }
        .article-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .article-hero-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(28, 11, 20, 0.05) 0%, rgba(28, 11, 20, 0.35) 100%);
            border-radius: 0;
            pointer-events: none;
        }

        /* ========== Article Body ========== */
        .article-body-section {
            padding: var(--space-lg) 0;
            background: var(--bg);
        }
        .article-body-container {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: var(--space-xl) var(--space-lg);
        }
        .article-content {
            font-size: 1.02rem;
            line-height: 1.85;
            color: var(--text);
            overflow-wrap: break-word;
        }
        .article-content h2 {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin: var(--space-lg) 0 var(--space-sm);
            padding-left: var(--space-sm);
            border-left: 4px solid var(--accent);
            line-height: 1.5;
        }
        .article-content h3 {
            font-size: 1.22rem;
            font-weight: 700;
            color: var(--primary);
            margin: var(--space-md) 0 var(--space-xs);
            line-height: 1.5;
        }
        .article-content p {
            margin: 0 0 var(--space-sm);
            color: #3a2832;
        }
        .article-content img {
            margin: var(--space-md) auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 var(--space-sm) var(--space-md);
            padding-left: var(--space-sm);
        }
        .article-content li {
            margin-bottom: 6px;
            color: #3a2832;
        }
        .article-content blockquote {
            margin: var(--space-md) 0;
            padding: var(--space-sm) var(--space-md);
            background: linear-gradient(135deg, rgba(138, 18, 83, 0.05), rgba(194, 24, 107, 0.08));
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-content a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px dashed var(--accent);
            transition: color var(--transition), border-color var(--transition);
        }
        .article-content a:hover {
            color: var(--primary-light);
            border-color: var(--primary-light);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: var(--space-md) 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
        }
        .article-content table th {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            font-weight: 600;
        }
        .article-content table tr:nth-child(even) {
            background: rgba(232, 216, 224, 0.35);
        }
        .article-content code {
            background: var(--bg);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-content pre {
            background: var(--bg-dark);
            color: #f0e4ec;
            padding: var(--space-md);
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: var(--space-md) 0;
        }
        .article-content pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        /* ========== Article Meta Panel ========== */
        .article-meta-panel {
            padding: var(--space-md) 0 var(--space-lg);
            background: var(--bg);
        }
        .meta-panel-inner {
            max-width: 820px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-sm);
        }
        .meta-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .meta-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border-strong);
        }
        .meta-card .meta-number {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .meta-card .meta-label {
            font-size: 0.86rem;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ========== Tag Cloud ========== */
        .tag-cloud-section {
            padding: var(--space-md) 0 var(--space-lg);
            background: var(--bg);
        }
        .tag-cloud-inner {
            max-width: 820px;
            margin: 0 auto;
            text-align: center;
        }
        .tag-cloud-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: var(--space-sm);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag-cloud .mini-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            background: var(--bg-card);
            color: var(--text-light);
            border: 1px solid var(--border);
            transition: all var(--transition);
            text-decoration: none;
        }
        .tag-cloud .mini-tag:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: rgba(194, 24, 107, 0.06);
            transform: translateY(-1px);
        }

        /* ========== Bottom CTA ========== */
        .bottom-cta {
            padding: var(--space-lg) 0 var(--space-xl);
            background: var(--bg);
        }
        .bottom-cta-inner {
            max-width: 820px;
            margin: 0 auto;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .bottom-cta-inner h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: var(--space-xs);
            color: #fff;
        }
        .bottom-cta-inner p {
            font-size: 0.98rem;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: var(--space-md);
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .bottom-cta-inner .cta-buttons {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
        }
        .btn-primary:hover {
            background: #ffe9f0;
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ========== Not Found ========== */
        .not-found-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: var(--space-xl) var(--space-lg);
            text-align: center;
            max-width: 620px;
            margin: 0 auto;
        }
        .not-found-box .nf-icon {
            font-size: 2.4rem;
            margin-bottom: var(--space-sm);
        }
        .not-found-box h2 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: var(--space-xs);
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: var(--space-md);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: var(--space-xl) 0 var(--space-md);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            padding-bottom: var(--space-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-xs);
        }
        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.92rem;
            font-weight: 600;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            padding-top: var(--space-md);
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .article-hero-inner {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .article-hero-image {
                min-height: 240px;
            }
            .article-hero-image img {
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .article-hero-text {
                padding-bottom: var(--space-md);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 80%);
                padding: var(--space-sm) var(--space-md);
                gap: 4px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 18px;
                border-radius: 10px;
                text-align: center;
                font-size: 0.98rem;
            }
            .main-nav a.active::after {
                display: none;
            }
            .nav-cta {
                margin-top: 6px;
            }
            .site-header {
                position: relative;
            }
            .article-hero-text {
                padding: var(--space-md);
            }
            .article-body-container {
                padding: var(--space-md);
            }
            .meta-panel-inner {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 var(--space-sm);
            }
            .article-hero-text {
                padding: var(--space-sm);
            }
            .article-hero h1 {
                font-size: 1.3rem;
            }
            .article-hero-tags .tag {
                font-size: 0.72rem;
                padding: 3px 10px;
            }
            .article-body-container {
                padding: var(--space-sm);
            }
            .article-content h2 {
                font-size: 1.25rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }
            .bottom-cta-inner {
                padding: var(--space-lg) var(--space-sm);
            }
            .bottom-cta-inner h2 {
                font-size: 1.3rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.88rem;
            }
            .breadcrumb .current {
                max-width: 160px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #8a1253;
            --primary-dark: #5e0b38;
            --primary-light: #c2186b;
            --accent: #ff6d9b;
            --accent-warm: #ff9e40;
            --bg: #f7f3f6;
            --bg-card: #ffffff;
            --bg-dark: #1c0b14;
            --bg-dark-2: #2b1020;
            --text: #2b1a24;
            --text-light: #6b4c5e;
            --text-lighter: #9a7d8e;
            --border: #e8d8e0;
            --border-strong: #d4bcc9;
            --shadow-sm: 0 2px 8px rgba(90, 40, 70, 0.06);
            --shadow-md: 0 6px 24px rgba(90, 40, 70, 0.1);
            --shadow-lg: 0 16px 48px rgba(90, 40, 70, 0.16);
            --radius-sm: 10px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --radius-xl: 36px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-xxl: 96px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 3px solid rgba(255, 158, 64, 0.75);
            outline-offset: 2px;
            border-radius: 6px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-md);
            width: 100%;
        }

        /* Header / Nav */
        .site-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 45%, var(--primary-light) 100%);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(60, 10, 40, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-sm);
            position: relative;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
            z-index: 15;
        }
        .logo:hover {
            color: #fff;
            opacity: 0.9;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 9px;
            background: rgba(255, 255, 255, 0.18);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            color: rgba(255, 255, 255, 0.82);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.14);
        }
        .main-nav a.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.2);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: "";
            position: absolute;
            bottom: 3px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-warm);
        }
        .nav-cta {
            background: #fff !important;
            color: var(--primary) !important;
            font-weight: 700 !important;
            padding: 9px 22px !important;
            border-radius: 50px !important;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
            letter-spacing: 0.02em !important;
        }
        .nav-cta:hover {
            background: #ffe9f0 !important;
            color: var(--primary-dark) !important;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.12);
            z-index: 15;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: #fff;
            border-radius: 3px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 700;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-md);
            white-space: nowrap;
        }
        .btn:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: #ff8cb0;
            color: #fff;
        }
        .btn-light {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: var(--shadow-md);
        }
        .btn-light:hover {
            background: #ffe9f0;
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-block {
            width: 100%;
        }

        /* Badges */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            line-height: 1;
            border: 1px solid rgba(255, 255, 255, 0.16);
        }
        .badge-solid {
            background: var(--accent-warm);
            color: #2b1a24;
            border-color: transparent;
        }
        .badge-pink {
            background: var(--accent);
            color: #fff;
            border-color: transparent;
        }
        .badge-primary {
            background: var(--primary);
            color: #fff;
            border-color: transparent;
        }

        /* Hero */
        .hero {
            background-image: linear-gradient(rgba(62, 14, 42, 0.82), rgba(40, 8, 28, 0.85)), url('/assets/images/bb9a6292c43d380d.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: var(--space-xl) 0 76px;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 40px;
            background: linear-gradient(to top, var(--bg), transparent);
            z-index: 1;
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: var(--space-lg);
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: var(--space-md);
        }
        .hero h1 {
            font-size: 3rem;
            line-height: 1.18;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            font-weight: 800;
            max-width: 680px;
        }
        .hero-lead {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin-bottom: var(--space-md);
            line-height: 1.85;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-bottom: var(--space-lg);
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.92rem;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta i {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-warm);
            display: inline-block;
        }
        .hero-card {
            background: rgba(255, 255, 255, 0.94);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            box-shadow: var(--shadow-lg);
            color: var(--text);
        }
        .hero-card h2 {
            font-size: 1.35rem;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }
        .hero-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            margin-bottom: var(--space-md);
        }
        .hero-card ul {
            list-style: none;
            margin-bottom: var(--space-md);
            display: grid;
            gap: 10px;
        }
        .hero-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.92rem;
            color: var(--text);
        }
        .hero-card ul li::before {
            content: "✓";
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background: var(--accent);
            color: #fff;
            border-radius: 50%;
            font-size: 0.75rem;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .hero-card .btn {
            width: 100%;
        }

        /* Sections */
        main {
            flex: 1;
        }
        .section {
            padding: var(--space-xl) 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: var(--space-lg);
        }
        .section-head h2 {
            font-size: 2.1rem;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: var(--primary-dark);
            margin-bottom: 10px;
            font-weight: 800;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 1.02rem;
        }
        .text-center {
            text-align: center;
        }
        .text-center .section-head {
            margin-left: auto;
            margin-right: auto;
        }

        /* Intro / category entry grid */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-md);
        }
        .entry-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            display: flex;
            align-items: stretch;
            transition: all var(--transition);
            border: 1px solid var(--border);
            min-height: 220px;
        }
        .entry-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-strong);
        }
        .entry-card img {
            width: 40%;
            object-fit: cover;
            border-radius: 20px 0 0 20px;
            flex-shrink: 0;
        }
        .entry-body {
            padding: var(--space-md);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .entry-body h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
            color: var(--primary-dark);
            line-height: 1.4;
        }
        .entry-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 12px;
        }
        .entry-link {
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
        }
        .entry-link:hover {
            color: var(--primary-light);
        }

        /* Solution split */
        .solution-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
        }
        .solution-grid img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            object-fit: cover;
            width: 100%;
        }
        .solution-list {
            display: grid;
            gap: var(--space-md);
            margin-top: var(--space-md);
        }
        .solution-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .solution-item .num {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-md);
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-strong);
        }
        .step-icon {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            background: var(--primary);
            color: #fff;
            margin-bottom: var(--space-sm);
        }
        .step-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--primary-dark);
        }
        .step-card p {
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-sm);
        }
        .stat-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: var(--space-md);
            text-align: center;
        }
        .stat-item strong {
            display: block;
            font-size: 2.1rem;
            line-height: 1.2;
            color: var(--accent-warm);
            font-weight: 800;
        }
        .stat-item span {
            display: block;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.85rem;
            margin-top: 4px;
        }

        /* Testimonials */
        .quote-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-md);
        }
        .quote-card {
            background: #fff;
            border-left: 4px solid var(--accent);
            border-radius: var(--radius-md);
            padding: var(--space-md) var(--space-lg);
            box-shadow: var(--shadow-sm);
        }
        .quote-card p {
            font-size: 1rem;
            color: var(--text);
            margin-bottom: 12px;
        }
        .quote-author {
            color: var(--text-light);
            font-weight: 700;
            font-size: 0.9rem;
        }

        /* Audience chips */
        .audience-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .audience-chip {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 12px 22px;
            font-weight: 600;
            color: var(--primary-dark);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .audience-chip:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            border-color: var(--primary);
        }

        /* Post feed */
        .post-feed {
            display: grid;
            gap: 0;
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .post-item {
            display: grid;
            grid-template-columns: 90px 1fr auto;
            gap: var(--space-sm);
            padding: var(--space-sm) var(--space-md);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
            color: inherit;
            align-items: center;
        }
        .post-item:last-child {
            border-bottom: none;
        }
        .post-item:hover {
            background: #fff7fa;
            color: inherit;
        }
        .post-item .post-thumb {
            width: 90px;
            height: 60px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--bg);
        }
        .post-item .post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .post-item .post-content {
            overflow: hidden;
        }
        .post-item .post-content h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .post-item .post-content p {
            font-size: 0.85rem;
            color: var(--text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .post-item .post-meta {
            display: flex;
            gap: 10px;
            font-size: 0.75rem;
            color: var(--text-lighter);
            white-space: nowrap;
        }
        .empty-state {
            padding: var(--space-lg);
            text-align: center;
            color: var(--text-light);
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-strong);
        }

        /* FAQ */
        .faq-grid {
            max-width: 820px;
            margin: 0 auto;
            display: grid;
            gap: var(--space-sm);
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item summary {
            cursor: pointer;
            padding: 18px 22px;
            font-weight: 700;
            color: var(--primary-dark);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "+";
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item .faq-body {
            padding: 0 22px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            color: #fff;
            text-align: center;
            padding: var(--space-xl) 0;
            border-radius: var(--radius-xl);
            margin: var(--space-xl) 0;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto var(--space-md);
            font-size: 1.05rem;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 28px;
            margin-top: var(--space-xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-lg);
        }
        .footer-brand {
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 6px;
            font-weight: 700;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.55);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
        }
        @media (max-width: 860px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: absolute;
                top: calc(100% + 14px);
                left: 0;
                right: 0;
                background: var(--primary-dark);
                border-radius: var(--radius-md);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: var(--space-sm);
                box-shadow: var(--shadow-lg);
                display: none;
                z-index: 50;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                text-align: center;
                padding: 11px 16px;
                width: 100%;
            }
            .main-nav a.active::after {
                width: 30px;
                bottom: 2px;
            }
            .entry-grid {
                grid-template-columns: 1fr;
            }
            .solution-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .quote-grid {
                grid-template-columns: 1fr;
            }
            .post-item {
                grid-template-columns: 60px 1fr;
                grid-template-areas: "thumb content" "thumb meta";
                gap: 10px;
            }
            .post-item .post-thumb {
                grid-area: thumb;
                width: 60px;
                height: 44px;
            }
            .post-item .post-content {
                grid-area: content;
            }
            .post-item .post-meta {
                grid-area: meta;
                font-size: 0.7rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 var(--space-sm);
            }
            .hero {
                padding: 40px 0 60px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero-lead {
                font-size: 1rem;
            }
            .hero-card {
                padding: var(--space-md);
            }
            .section {
                padding: var(--space-lg) 0;
            }
            .section-head h2 {
                font-size: 1.7rem;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-section {
                padding: var(--space-lg) 0;
                border-radius: var(--radius-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-sm);
            }
            .entry-card {
                flex-direction: column;
            }
            .entry-card img {
                width: 100%;
                height: 180px;
                border-radius: 20px 20px 0 0;
            }
        }