/* roulang page: index */
/* ===== CSS Design Tokens ===== */
        :root {
            --bg-base: #0B0B0D;
            --bg-surface: #15161A;
            --bg-surface-2: #1D1F24;
            --color-primary: #C9A568;
            --color-primary-dark: #9A7B3E;
            --color-primary-light: #E8D5A9;
            --color-accent: #C4533D;
            --color-text-main: #EFE9DD;
            --color-text-secondary: #A49E93;
            --color-text-muted: #6B6B70;
            --color-border: rgba(201, 165, 104, 0.25);
            --color-success: #4E9A6C;
            --font-display: "Noto Serif SC", "Songti SC", "SimSun", serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --radius-card: 12px;
            --radius-badge: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.03), 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-gold: 0 8px 24px rgba(201, 165, 104, 0.25);
            --space-section: 100px;
            --space-section-mobile: 64px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-base);
            color: var(--color-text-main);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        ul,
        ol {
            list-style: none;
        }

        button {
            font-family: var(--font-body);
            border: none;
            cursor: pointer;
        }

        input {
            font-family: var(--font-body);
        }

        ::selection {
            background: rgba(201, 165, 104, 0.3);
            color: var(--color-text-main);
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-base);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(201, 165, 104, 0.3);
            border-radius: 3px;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 11, 13, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 4px;
        }

        .logo-main {
            font-family: var(--font-display);
            font-size: 26px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            line-height: 1;
        }

        .logo-sub {
            font-size: 13px;
            color: var(--color-text-secondary);
            letter-spacing: 0.2em;
            font-weight: 400;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-main);
            position: relative;
            padding: 8px 2px;
            transition: color 0.3s ease;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width 0.3s ease;
            border-radius: 1px;
        }

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

        .nav-link:hover::after {
            width: 100%;
        }

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

        .nav-link.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            padding: 12px;
            cursor: pointer;
            flex-direction: column;
            gap: 6px;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-primary);
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(4px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            transform: translateY(-4px) rotate(-45deg);
        }

        /* 移动端抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            width: 100%;
            height: calc(100vh - 72px);
            background: var(--bg-base);
            z-index: 999;
            padding: 48px 24px;
            flex-direction: column;
            gap: 24px;
            border-bottom: 1px solid var(--color-border);
        }

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

        .mobile-drawer a {
            font-family: var(--font-display);
            font-size: 24px;
            color: var(--color-text-main);
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: color 0.3s ease;
        }

        .mobile-drawer a:hover {
            color: var(--color-primary);
        }

        .mobile-drawer a.active {
            color: var(--color-primary);
        }

        .mobile-drawer-footer {
            margin-top: auto;
            padding-top: 32px;
            border-top: 1px solid var(--color-border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .mobile-drawer-footer .domain-text {
            color: var(--color-text-muted);
            font-size: 13px;
        }

        .mobile-drawer-footer .badge {
            font-size: 12px;
            color: var(--color-primary);
            border: 1px solid var(--color-border);
            padding: 4px 12px;
            border-radius: var(--radius-badge);
        }

        /* ===== Hero ===== */
        .hero {
            min-height: calc(100vh - 72px);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11, 11, 13, 0.4) 0%, rgba(11, 11, 13, 0.75) 60%, var(--bg-base) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 800px;
            padding: 0 24px;
        }

        .hero-eyebrow {
            font-size: 14px;
            color: var(--color-primary);
            letter-spacing: 0.3em;
            text-transform: uppercase;
            margin-bottom: 24px;
            font-weight: 500;
        }

        .hero h1 {
            font-family: var(--font-display);
            font-size: 56px;
            line-height: 1.2;
            font-weight: 800;
            color: var(--color-text-main);
            margin-bottom: 24px;
            letter-spacing: 0.02em;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 620px;
            margin: 0 auto 40px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #C9A568 0%, #B8924C 100%);
            color: #1A1A1D;
            font-weight: 700;
            font-size: 15px;
            height: 48px;
            padding: 0 32px;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-gold);
            transition: opacity 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
        }

        .btn-primary:hover {
            opacity: 0.92;
            color: #1A1A1D;
            box-shadow: 0 12px 32px rgba(201, 165, 104, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn-primary.btn-lg {
            height: 56px;
            padding: 0 40px;
            font-size: 16px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            height: 48px;
            padding: 0 32px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            transition: background 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }

        .btn-outline:hover {
            background: rgba(201, 165, 104, 0.1);
            color: var(--color-primary);
            border-color: rgba(201, 165, 104, 0.5);
            transform: translateY(-1px);
        }

        .btn-outline:active {
            transform: translateY(1px);
        }

        .btn-outline:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn-outline.btn-lg {
            height: 56px;
            padding: 0 40px;
            font-size: 16px;
        }

        .hero-scroll {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            z-index: 1;
        }

        .hero-scroll-line {
            width: 1px;
            height: 40px;
            background: linear-gradient(to bottom, var(--color-primary), transparent);
        }

        .hero-scroll-text {
            font-size: 12px;
            color: var(--color-text-muted);
            letter-spacing: 0.15em;
        }

        /* ===== 板块标题 ===== */
        .section-heading {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            margin-bottom: 48px;
        }

        .section-index {
            font-family: var(--font-display);
            font-size: 14px;
            color: var(--color-primary);
            font-weight: 600;
            letter-spacing: 0.05em;
            padding-top: 8px;
            flex-shrink: 0;
            line-height: 1.4;
        }

        .section-title-content h2 {
            font-family: var(--font-display);
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text-main);
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
        }

        .section-title-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 4px;
            height: 28px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .section-title-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            padding-left: 24px;
            max-width: 640px;
        }

        /* ===== 玩法介绍 ===== */
        .how-it-works {
            padding: var(--space-section) 0;
            background: var(--bg-base);
        }

        .steps-row {
            display: grid;
            grid-template-columns: 1fr 60px 1fr 60px 1fr;
            gap: 0;
            align-items: start;
        }

        .step-item {
            text-align: center;
            padding: 24px 16px;
        }

        .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--bg-surface);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: var(--color-primary);
        }

        .step-icon svg {
            width: 28px;
            height: 28px;
            stroke: var(--color-primary);
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .step-number {
            display: block;
            font-size: 12px;
            color: var(--color-text-muted);
            letter-spacing: 0.15em;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            max-width: 200px;
            margin: 0 auto;
        }

        .step-connector {
            display: flex;
            align-items: center;
            justify-content: center;
            padding-top: 48px;
        }

        .step-connector::before {
            content: '';
            display: block;
            width: 100%;
            height: 1px;
            border-top: 1px dashed rgba(201, 165, 104, 0.4);
        }

        /* ===== 奖励预览 ===== */
        .rewards-section {
            padding: var(--space-section) 0;
            background: var(--bg-surface);
        }

        .rewards-layout {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 48px;
            align-items: center;
        }

        .rewards-left .section-heading {
            margin-bottom: 24px;
        }

        .rewards-left .section-title-content h2 {
            font-size: 30px;
        }

        .rewards-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            padding-left: 24px;
            max-width: 400px;
        }

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

        .reward-card {
            background: var(--bg-surface-2);
            border-radius: var(--radius-card);
            padding: 28px;
            position: relative;
            box-shadow: var(--shadow-card);
            border: 1px solid transparent;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            overflow: hidden;
        }

        .reward-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), rgba(201, 165, 104, 0.3));
        }

        .reward-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border);
        }

        .reward-tag {
            position: absolute;
            top: 16px;
            right: 0;
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 4px 0 0 4px;
            letter-spacing: 0.05em;
        }

        .reward-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(201, 165, 104, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--color-primary);
        }

        .reward-icon svg {
            width: 24px;
            height: 24px;
            stroke: var(--color-primary);
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .reward-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 8px;
        }

        .reward-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .reward-link {
            font-size: 13px;
            color: var(--color-primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s ease;
        }

        .reward-link:hover {
            gap: 10px;
            color: var(--color-primary-light);
        }

        /* ===== 成长体系 ===== */
        .growth-section {
            padding: var(--space-section) 0;
            background: var(--bg-base);
        }

        .growth-track {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            margin-bottom: 40px;
            padding: 0 8px;
        }

        .growth-level {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            position: relative;
            flex: 1;
        }

        .growth-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            position: relative;
            z-index: 2;
            transition: all 0.3s ease;
        }

        .growth-dot.completed {
            background: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(201, 165, 104, 0.2);
        }

        .growth-dot.current {
            background: var(--color-accent);
            transform: scale(1.2);
            box-shadow: 0 0 0 4px rgba(196, 83, 61, 0.2);
        }

        .growth-name {
            font-size: 13px;
            color: var(--color-text-secondary);
            font-weight: 500;
            margin-top: 4px;
        }

        .growth-name.current-text {
            color: var(--color-accent);
        }

        .growth-line {
            position: absolute;
            top: 6px;
            left: calc(50% + 12px);
            width: calc(100% - 24px);
            height: 1px;
            background: rgba(255, 255, 255, 0.2);
        }

        .growth-line.completed-line {
            background: var(--color-primary);
        }

        .growth-note {
            text-align: center;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 24px;
        }

        .growth-link-wrap {
            text-align: center;
        }

        .growth-link {
            font-size: 13px;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.3s ease;
        }

        .growth-link:hover {
            gap: 8px;
            color: var(--color-primary-light);
        }

        /* ===== CTA 横幅 ===== */
        .cta-section {
            padding: 100px 0;
            position: relative;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 11, 13, 0.9) 0%, rgba(11, 11, 13, 0.7) 50%, rgba(11, 11, 13, 0.88) 100%);
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-content h2 {
            font-family: var(--font-display);
            font-size: 38px;
            font-weight: 700;
            color: var(--color-text-main);
            margin-bottom: 16px;
        }

        .cta-content h2 .gold {
            color: var(--color-primary);
        }

        .cta-content p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 40px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-content .btn-primary {
            min-width: 200px;
        }

        /* ===== 资讯动态 ===== */
        .news-section {
            padding: var(--space-section) 0;
            background: var(--bg-surface);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .news-feature {
            background: var(--bg-surface-2);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid transparent;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            box-shadow: var(--shadow-card);
        }

        .news-feature:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-card-hover);
        }

        .news-feature-img {
            height: 220px;
            overflow: hidden;
        }

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

        .news-feature:hover .news-feature-img img {
            transform: scale(1.02);
        }

        .news-feature-body {
            padding: 24px;
        }

        .news-feature-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 12px;
        }

        .news-feature-date {
            font-size: 13px;
            color: var(--color-primary);
        }

        .news-feature-cat {
            font-size: 12px;
            color: var(--color-text-secondary);
            background: rgba(201, 165, 104, 0.1);
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            border: 1px solid var(--color-border);
        }

        .news-feature-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-feature-body p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }

        .news-feature-link {
            font-size: 13px;
            color: var(--color-primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-feature-link:hover {
            gap: 8px;
            color: var(--color-primary-light);
        }

        .news-list {
            display: flex;
            flex-direction: column;
        }

        .news-list-item {
            padding: 20px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .news-list-item:first-child {
            padding-top: 0;
        }

        .news-list-date {
            font-size: 13px;
            color: var(--color-primary);
            flex-shrink: 0;
            padding-top: 2px;
            min-width: 80px;
        }

        .news-list-content {
            flex: 1;
        }

        .news-list-content h3 {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-main);
            margin-bottom: 6px;
            line-height: 1.5;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color 0.3s ease;
        }

        .news-list-content a:hover h3 {
            color: var(--color-primary);
        }

        .news-list-content p {
            font-size: 13px;
            color: var(--color-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-list-cat {
            font-size: 12px;
            color: var(--color-primary);
            background: rgba(201, 165, 104, 0.08);
            padding: 2px 8px;
            border-radius: var(--radius-badge);
            border: 1px solid rgba(201, 165, 104, 0.15);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .news-list-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        /* 资讯空态 */
        .news-empty {
            border: 1px dashed rgba(201, 165, 104, 0.35);
            border-radius: var(--radius-card);
            padding: 48px;
            text-align: center;
            background: transparent;
            grid-column: 1 / -1;
        }

        .news-empty-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .news-empty-icon svg {
            width: 20px;
            height: 20px;
            stroke: var(--color-text-muted);
            fill: none;
            stroke-width: 1.5;
            stroke-linecap: round;
        }

        .news-empty p {
            font-size: 14px;
            color: var(--color-text-muted);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--bg-base);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(201, 165, 104, 0.25);
        }

        .faq-item:first-child {
            border-top: 1px solid rgba(201, 165, 104, 0.25);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 20px 8px;
            cursor: pointer;
            min-height: 44px;
            transition: background 0.3s ease;
        }

        .faq-question:hover {
            background: rgba(201, 165, 104, 0.03);
        }

        .faq-q-text {
            display: flex;
            align-items: baseline;
            gap: 12px;
        }

        .faq-q-text .q-mark {
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
        }

        .faq-q-text span {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-main);
            line-height: 1.5;
        }

        .faq-toggle {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-toggle::before,
        .faq-toggle::after {
            content: '';
            position: absolute;
            background: var(--color-primary);
            transition: all 0.3s ease;
        }

        .faq-toggle::before {
            top: 9px;
            left: 2px;
            width: 16px;
            height: 2px;
        }

        .faq-toggle::after {
            top: 2px;
            left: 9px;
            width: 2px;
            height: 16px;
        }

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

        .faq-answer {
            display: none;
            padding: 0 8px 20px;
            padding-left: 44px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-secondary);
        }

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

        /* ===== 数据统计模块 ===== */
        .stats-strip {
            background: var(--bg-surface-2);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: 48px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: center;
            padding: 16px;
        }

        .stat-number {
            font-family: var(--font-display);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #070709;
            padding: 64px 0 24px;
            border-top: 1px solid rgba(201, 165, 104, 0.2);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-domain {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 16px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }

        .footer-contact {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            text-align: center;
        }

        .footer-copy {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .hero h1 {
                font-size: 48px;
            }

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

            .rewards-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .rewards-left .section-title-content h2 {
                font-size: 28px;
            }

            .news-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 991px) {
            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .steps-row {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .step-connector {
                display: none;
            }

            .step-item {
                padding: 16px 24px;
            }

            .step-item p {
                max-width: 320px;
            }

            .growth-track {
                flex-direction: column;
                gap: 16px;
                align-items: stretch;
            }

            .growth-level {
                flex-direction: row;
                align-items: center;
                gap: 16px;
            }

            .growth-line {
                display: none;
            }

            .growth-name {
                margin-top: 0;
            }

            .cta-content h2 {
                font-size: 30px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section: 64px;
            }

            .hero {
                min-height: calc(100vh - 72px);
                padding: 60px 0;
            }

            .hero h1 {
                font-size: 36px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                padding: 0 24px;
            }

            .btn-primary.btn-lg,
            .btn-outline.btn-lg {
                width: 100%;
            }

            .section-title-content h2 {
                font-size: 26px;
                padding-left: 16px;
            }

            .section-title-content h2::before {
                height: 22px;
                top: 6px;
            }

            .section-title-content p {
                padding-left: 16px;
                font-size: 14px;
            }

            .rewards-layout {
                grid-template-columns: 1fr;
            }

            .reward-cards {
                grid-template-columns: 1fr;
            }

            .news-layout {
                grid-template-columns: 1fr;
            }

            .news-feature-img {
                height: 180px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-number {
                font-size: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-section {
                padding: 80px 0;
            }

            .cta-content p {
                font-size: 15px;
                padding: 0 16px;
            }

            .cta-content .btn-primary {
                width: calc(100% - 48px);
                margin: 0 24px;
            }

            .news-list-item {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 8px;
            }

            .news-list-date {
                min-width: 70px;
                font-size: 12px;
            }

            .news-list-content h3 {
                font-size: 14px;
            }

            .news-list-content p {
                font-size: 12px;
            }

            .news-list-meta {
                flex-direction: column;
                gap: 4px;
                align-items: flex-start;
            }

            .news-list-cat {
                font-size: 11px;
                padding: 2px 6px;
            }

            .faq-q-text span {
                font-size: 14px;
            }

            .faq-answer {
                padding-left: 32px;
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .container {
                padding: 0 16px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                padding: 0 16px;
            }

            .section-heading {
                gap: 12px;
            }

            .section-index {
                font-size: 12px;
                padding-top: 6px;
            }
        }

        /* 动画 */
        .fade-in-up {
            opacity: 0;
            transform: translateY(8px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }

        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .fade-in-up {
                opacity: 1;
                transform: none;
            }
        }

/* roulang page: category1 */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --bg-base: #0B0B0D;
            --bg-surface: #15161A;
            --bg-surface-2: #1D1F24;
            --bg-footer: #070709;
            --color-primary: #C9A568;
            --color-primary-dark: #9A7B3E;
            --color-primary-light: #E8D5A9;
            --color-accent: #C4533D;
            --color-text-main: #EFE9DD;
            --color-text-secondary: #A49E93;
            --color-text-muted: #6B6B70;
            --color-border: rgba(201, 165, 104, 0.25);
            --color-success: #4E9A6C;
            --font-display: "Noto Serif SC", "Songti SC", "SimSun", serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --radius-lg: 12px;
            --radius-sm: 6px;
            --radius-btn: 4px;
            --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.03), 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-btn: 0 8px 24px rgba(201, 165, 104, 0.25);
            --space-lg: 100px;
            --space-md: 64px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg-base);
            color: var(--color-text-main);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color .2s ease, border-color .2s ease;
        }
        a:hover {
            color: var(--color-primary);
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 72px;
            background: rgba(11, 11, 13, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(201, 165, 104, 0.14);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
        }
        .logo-main {
            font-family: var(--font-display);
            font-size: 24px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 2px;
        }
        .logo-sub {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            letter-spacing: 1px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-main);
            padding: 8px 2px;
            letter-spacing: 0.02em;
            transition: color .2s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }
        .nav-link:hover {
            color: var(--color-primary-light);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--color-primary-light);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 7px;
            width: 44px;
            height: 44px;
            padding: 10px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .nav-toggle.active span:first-child {
            transform: translateY(4.5px) rotate(45deg);
        }
        .nav-toggle.active span:last-child {
            transform: translateY(-4.5px) rotate(-45deg);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            min-height: 300px;
            display: flex;
            align-items: center;
            background: linear-gradient(180deg, rgba(11, 11, 13, 0.72), rgba(11, 11, 13, 0.94)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat, var(--bg-surface-2);
            border-bottom: 1px solid rgba(201, 165, 104, 0.12);
            padding: 72px 0;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 72px;
            background: var(--color-primary);
            border-radius: 0 4px 4px 0;
        }
        .page-banner-inner {
            position: relative;
            z-index: 2;
            padding-left: 40px;
        }
        .banner-kicker {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
            letter-spacing: 0.3em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .page-banner h1 {
            font-family: var(--font-display);
            font-size: 38px;
            font-weight: 800;
            color: var(--color-text-main);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }
        .banner-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 560px;
            line-height: 1.7;
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--space-lg) 0;
            transition: opacity .5s ease, transform .5s ease;
        }
        .section-head {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 44px;
        }
        .section-number {
            font-family: var(--font-display);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 1px;
        }
        .section-head h2 {
            position: relative;
            font-family: var(--font-display);
            font-size: 30px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.3;
            padding-left: 24px;
        }
        .section-head h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        /* ===== Guide Grid (Two-Column) ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 48px;
            align-items: start;
        }
        .guide-item {
            display: flex;
            gap: 24px;
            padding-bottom: 28px;
            margin-bottom: 28px;
            border-bottom: 1px solid rgba(201, 165, 104, 0.12);
            transition: background .3s ease;
        }
        .guide-item:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .guide-thumb {
            width: 120px;
            height: 120px;
            border-radius: 8px;
            object-fit: cover;
            background: var(--bg-surface-2);
            flex-shrink: 0;
            border: 1px solid rgba(255, 255, 255, 0.04);
            transition: transform .3s ease;
        }
        .guide-item:hover .guide-thumb {
            transform: scale(1.02);
        }
        .guide-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .guide-meta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary-light);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            line-height: 1.5;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .badge:hover {
            background: var(--color-primary);
            color: #1A1A1D;
            border-color: var(--color-primary);
        }
        .guide-date {
            font-size: 13px;
            color: var(--color-text-muted);
            letter-spacing: 0.02em;
        }
        .guide-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-main);
            line-height: 1.4;
            margin: 0;
        }
        .guide-title a {
            color: inherit;
            transition: color .2s ease;
        }
        .guide-title a:hover {
            color: var(--color-primary-light);
        }
        .guide-summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-link {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
            transition: letter-spacing .2s ease;
            align-self: flex-start;
        }
        .guide-link:hover {
            letter-spacing: 0.08em;
            color: var(--color-primary-light);
        }

        /* ===== Sidebar ===== */
        .guide-side {
            display: flex;
            flex-direction: column;
            gap: 28px;
            position: sticky;
            top: 100px;
        }
        .info-card,
        .link-card {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid transparent;
            transition: border-color .3s ease, transform .3s ease, box-shadow .3s ease;
        }
        .info-card:hover,
        .link-card:hover {
            border-color: var(--color-border);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .info-card h3,
        .link-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 16px;
            padding-left: 14px;
            position: relative;
        }
        .info-card h3::before,
        .link-card h3::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 18px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .info-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .info-stat {
            display: flex;
            gap: 20px;
            border-top: 1px solid rgba(201, 165, 104, 0.1);
            padding-top: 18px;
        }
        .stat-item {
            flex: 1;
            text-align: center;
        }
        .stat-num {
            font-family: var(--font-display);
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            display: block;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        .related-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .related-links a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            font-size: 14px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: color .2s ease, padding-left .2s ease;
        }
        .related-links a:last-child {
            border-bottom: none;
        }
        .related-links a::after {
            content: '→';
            color: var(--color-primary);
            font-size: 14px;
            opacity: 0;
            transform: translateX(-6px);
            transition: all .2s ease;
        }
        .related-links a:hover {
            color: var(--color-primary-light);
            padding-left: 6px;
        }
        .related-links a:hover::after {
            opacity: 1;
            transform: translateX(0);
        }

        /* ===== Features ===== */
        .features-section {
            background: linear-gradient(180deg, var(--bg-base), rgba(21, 22, 26, 0.6));
        }
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1.12fr 1fr;
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            border: 1px solid rgba(255, 255, 255, 0.03);
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            position: relative;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-border);
            box-shadow: var(--shadow-card-hover);
        }
        .feature-card.highlight {
            background: linear-gradient(145deg, #181A20, #15161A);
            border-color: var(--color-border);
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04), 0 12px 40px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(201, 165, 104, 0.06);
        }
        .feature-card.highlight::before {
            content: '';
            position: absolute;
            top: 0;
            left: 24px;
            right: 24px;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
            border-radius: 0 0 4px 4px;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            border: 1px solid var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-primary);
            margin-bottom: 20px;
            background: rgba(201, 165, 104, 0.06);
        }
        .feature-card .feature-order {
            font-family: var(--font-display);
            font-size: 14px;
            color: var(--color-primary-dark);
            letter-spacing: 0.1em;
            margin-bottom: 6px;
            display: block;
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 10px;
            font-family: var(--font-body);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== Process ===== */
        .process-section {
            background: var(--bg-surface);
            border-top: 1px solid rgba(201, 165, 104, 0.08);
            border-bottom: 1px solid rgba(201, 165, 104, 0.08);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 8%;
            right: 8%;
            height: 1px;
            border-top: 1px dashed rgba(201, 165, 104, 0.3);
        }
        .process-step {
            position: relative;
            text-align: center;
            padding: 0 8px;
        }
        .step-dot {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-surface-2);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            position: relative;
            z-index: 2;
            font-family: var(--font-display);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 8px;
            font-family: var(--font-body);
        }
        .process-step p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-list {
            border-top: 1px solid rgba(201, 165, 104, 0.18);
        }
        .faq-item {
            border-bottom: 1px solid rgba(201, 165, 104, 0.18);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 26px 8px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-main);
            background: none;
            transition: color .2s ease;
        }
        .faq-question:hover {
            color: var(--color-primary-light);
        }
        .faq-question .q-mark {
            color: var(--color-primary);
            font-weight: 700;
            margin-right: 10px;
            font-size: 17px;
        }
        .faq-question .q-text {
            flex: 1;
            display: flex;
            align-items: center;
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 300;
            color: var(--color-primary);
            transition: transform .3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
        }
        .faq-answer-inner {
            padding: 0 28px 24px 34px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(180deg, rgba(11, 11, 13, 0.85), rgba(11, 11, 13, 0.94)), url('/assets/images/backpic/back-1.png') center/cover no-repeat, var(--bg-surface-2);
            padding: 110px 0;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(201, 165, 104, 0.5), transparent);
        }
        .cta-section h2 {
            font-family: var(--font-display);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text-main);
            line-height: 1.35;
            margin-bottom: 14px;
            letter-spacing: 2px;
        }
        .cta-section h2 span {
            color: var(--color-primary);
        }
        .cta-section p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 36px;
        }
        .btn-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 56px;
            padding: 0 40px;
            font-size: 16px;
            font-weight: 700;
            color: #1A1A1D;
            background: linear-gradient(135deg, #C9A568, #B8924C);
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-btn);
            transition: all .25s ease;
            min-width: 44px;
        }
        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 10px 30px rgba(201, 165, 104, 0.35);
            transform: translateY(-1px);
            color: #1A1A1D;
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 4px 16px rgba(201, 165, 104, 0.2);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 56px;
            padding: 0 40px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-primary-light);
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            transition: all .25s ease;
        }
        .btn-outline:hover {
            background: rgba(201, 165, 104, 0.1);
            color: var(--color-primary-light);
            border-color: var(--color-primary);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(201, 165, 104, 0.2);
            padding: 64px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 44px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
            max-width: 360px;
            margin-bottom: 12px;
        }
        .footer-domain {
            font-size: 13px;
            color: var(--color-text-secondary);
            letter-spacing: 0.05em;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: color .2s ease;
            width: fit-content;
        }
        .footer-links a:hover {
            color: var(--color-primary-light);
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 8px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            text-align: center;
        }
        .footer-copy {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .container {
                padding: 0 20px;
            }
            .page-banner h1 {
                font-size: 34px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
            .feature-card.highlight {
                order: -1;
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 991px) {
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: center;
                gap: 0;
                background: rgba(11, 11, 13, 0.97);
                border-bottom: 1px solid rgba(201, 165, 104, 0.15);
                padding: 24px 20px 32px;
                transform: translateY(-120%);
                transition: transform .35s ease;
                z-index: 99;
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .nav-link {
                font-size: 18px;
                padding: 16px 0;
                width: 100%;
                text-align: center;
            }
            .nav-link::after {
                height: 1px;
                width: 60%;
                left: 20%;
            }
            .nav-toggle {
                display: flex;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .guide-side {
                position: static;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .process-steps::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .section {
                padding: var(--space-md) 0;
            }
            .page-banner {
                min-height: 240px;
                padding: 48px 0;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .banner-desc {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 24px;
                padding-left: 18px;
            }
            .section-head h2::before {
                width: 3px;
                height: 20px;
            }
            .guide-item {
                flex-direction: column;
                gap: 14px;
            }
            .guide-thumb {
                width: 100%;
                height: 160px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card.highlight {
                order: 0;
                grid-column: auto;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 80px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .btn-group {
                flex-direction: column;
                align-items: stretch;
                padding: 0 16px;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo-main {
                font-size: 20px;
            }
            .page-banner-inner {
                padding-left: 24px;
            }
            .info-card,
            .link-card {
                padding: 24px;
            }
            .faq-question {
                font-size: 15px;
                padding: 20px 4px;
            }
            .faq-answer-inner {
                padding: 0 16px 20px 24px;
                font-size: 13px;
            }
        }

/* roulang page: article */
:root {
            --bg-base: #0B0B0D;
            --bg-surface: #15161A;
            --bg-surface-2: #1D1F24;
            --color-primary: #C9A568;
            --color-primary-dark: #9A7B3E;
            --color-primary-light: #E8D5A9;
            --color-accent: #C4533D;
            --color-text-main: #EFE9DD;
            --color-text-secondary: #A49E93;
            --color-text-muted: #6B6B70;
            --color-border: rgba(201,165,104,0.25);
            --color-success: #4E9A6C;
            --font-display: "Noto Serif SC", "Songti SC", "SimSun", serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --radius-lg: 12px;
            --radius-md: 6px;
            --radius-sm: 4px;
            --shadow-card: 0 1px 0 rgba(255,255,255,0.03), 0 8px 24px rgba(0,0,0,0.4);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.5);
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-base);
            color: var(--color-text-main);
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        button {
            font-family: var(--font-body);
            cursor: pointer;
        }

        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header & Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 11, 13, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            text-decoration: none;
            line-height: 1;
        }

        .logo-main {
            font-family: var(--font-display);
            font-size: 26px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 2px;
        }

        .logo-sub {
            font-size: 12px;
            color: var(--color-text-secondary);
            letter-spacing: 3px;
            border: 1px solid var(--color-border);
            padding: 2px 6px;
            border-radius: 2px;
            line-height: 1.4;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            color: var(--color-text-main);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 0;
            text-decoration: none;
            transition: color 0.3s ease;
            min-height: 44px;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 4px;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.3s ease;
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }

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

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

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
            width: 44px;
            height: 44px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 8px;
            border-radius: var(--radius-md);
            z-index: 300;
            position: relative;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .nav-toggle.active span:first-child {
            transform: rotate(45deg) translate(4px, 4px);
        }

        .nav-toggle.active span:last-child {
            transform: rotate(-45deg) translate(4px, -4px);
        }

        .mobile-nav-footer {
            display: none;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            max-width: 860px;
            margin: 28px auto 0;
            padding: 0 24px;
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-bar a {
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color 0.2s;
            padding: 4px 0;
        }

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

        .breadcrumb-bar .sep {
            color: var(--color-primary);
        }

        .breadcrumb-bar .current {
            color: var(--color-text-secondary);
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== Article Header ========== */
        .article-header {
            max-width: 860px;
            margin: 0 auto;
            padding: 48px 24px 28px;
        }

        .article-title {
            font-family: var(--font-display);
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text-main);
            letter-spacing: 0.02em;
            margin-bottom: 24px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            line-height: 1.4;
        }

        .meta-item a {
            color: var(--color-primary);
        }

        .meta-icon {
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .meta-time {
            color: var(--color-text-secondary);
        }

        /* ========== Article Content ========== */
        .article-content {
            max-width: 760px;
            margin: 0 auto;
            padding: 24px 24px 0;
            overflow-wrap: break-word;
        }

        .article-content p {
            font-size: 16px;
            line-height: 1.9;
            letter-spacing: 0.01em;
            margin-bottom: 28px;
            color: var(--color-text-main);
            text-align: left;
        }

        .article-content h2 {
            font-family: var(--font-display);
            font-size: 26px;
            font-weight: 700;
            line-height: 1.4;
            margin: 48px 0 20px;
            padding-left: 16px;
            border-left: 4px solid var(--color-primary);
            color: var(--color-text-main);
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 32px 0 14px;
            color: var(--color-text-main);
        }

        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 24px 0 12px;
            color: var(--color-text-main);
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 28px;
            padding-left: 24px;
            color: var(--color-text-main);
        }

        .article-content li {
            margin-bottom: 8px;
            line-height: 1.8;
        }

        .article-content img {
            border-radius: 8px;
            border: 1px solid var(--color-border);
            margin: 28px auto;
            max-width: 100%;
            height: auto;
        }

        .article-content blockquote {
            border-left: 3px solid var(--color-primary);
            background: var(--bg-surface);
            padding: 20px 24px;
            margin: 28px 0;
            border-radius: 0 8px 8px 0;
            color: var(--color-text-secondary);
            font-style: italic;
        }

        .article-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        /* ========== Article Tags ========== */
        .article-tags {
            max-width: 760px;
            margin: 40px auto 0;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .tag {
            display: inline-block;
            padding: 6px 18px;
            border: 1px solid var(--color-border);
            border-radius: 999px;
            font-size: 13px;
            color: var(--color-primary-light);
            background: transparent;
            transition: background 0.3s, color 0.3s, border-color 0.3s;
            line-height: 1.6;
            text-decoration: none;
        }

        .tag:hover {
            background: rgba(201, 165, 104, 0.1);
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        /* ========== Article More Link ========== */
        .article-more {
            max-width: 760px;
            margin: 40px auto 0;
            padding: 16px 24px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            text-align: center;
            transition: border-color 0.3s, background 0.3s;
        }

        .article-more:hover {
            border-color: var(--color-primary);
            background: rgba(201, 165, 104, 0.04);
        }

        .article-more a {
            color: var(--color-primary);
            font-weight: 600;
            padding: 8px 12px;
            display: inline-block;
            transition: color 0.2s, transform 0.2s;
        }

        .article-more a:hover {
            color: var(--color-primary-light);
            transform: translateX(2px);
        }

        /* ========== Related Section ========== */
        .related-section {
            max-width: 860px;
            margin: 80px auto 0;
            padding: 0 24px;
        }

        .section-title {
            font-family: var(--font-display);
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 40px;
            padding-left: 16px;
            border-left: 4px solid var(--color-primary);
            color: var(--color-text-main);
            letter-spacing: 0.02em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-surface);
            border: 1px solid transparent;
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
            text-decoration: none;
            display: block;
            box-shadow: var(--shadow-card);
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-border);
            box-shadow: var(--shadow-hover);
        }

        .related-card:active {
            transform: translateY(-1px);
        }

        .related-img {
            height: 140px;
            overflow: hidden;
            background: var(--bg-surface-2);
        }

        .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .related-card:hover .related-img img {
            transform: scale(1.02);
        }

        .related-info {
            padding: 18px 20px 20px;
        }

        .related-info h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            line-height: 1.4;
        }

        .related-date {
            font-size: 12px;
            color: var(--color-text-muted);
            display: block;
            margin-top: 6px;
        }

        /* ========== Back Link ========== */
        .article-back {
            text-align: center;
            padding: 64px 24px 80px;
        }

        .article-back a {
            color: var(--color-text-secondary);
            font-size: 14px;
            text-decoration: none;
            display: inline-block;
            padding: 10px 20px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: color 0.3s, border-color 0.3s, background 0.3s;
            min-height: 44px;
            line-height: 24px;
        }

        .article-back a:hover {
            color: var(--color-primary);
            border-color: var(--color-primary);
            background: rgba(201, 165, 104, 0.05);
        }

        /* ========== Not Found ========== */
        .not-found {
            max-width: 760px;
            margin: 0 auto;
            padding: 80px 24px;
            text-align: center;
            border: 1px dashed var(--color-border);
            border-radius: var(--radius-lg);
            background: var(--bg-surface);
        }

        .not-found-mark {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-surface-2);
            color: var(--color-primary);
            font-size: 28px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-family: var(--font-display);
        }

        .not-found h3 {
            font-family: var(--font-display);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text-main);
        }

        .not-found p {
            color: var(--color-text-secondary);
            font-size: 14px;
            margin-bottom: 28px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: var(--color-primary);
            color: #1A1A1D;
            font-weight: 700;
            font-size: 15px;
            border-radius: var(--radius-sm);
            border: none;
            text-decoration: none;
            transition: background 0.3s, box-shadow 0.3s, transform 0.2s;
            box-shadow: 0 8px 24px rgba(201, 165, 104, 0.25);
            min-height: 44px;
            line-height: 1;
        }

        .btn-primary:hover {
            background: var(--color-primary-light);
            color: #1A1A1D;
            box-shadow: 0 12px 30px rgba(201, 165, 104, 0.35);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 4px 16px rgba(201, 165, 104, 0.2);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #070709;
            border-top: 1px solid rgba(201, 165, 104, 0.2);
            padding: 64px 0 28px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
            max-width: 360px;
        }

        .footer-domain {
            font-size: 13px;
            color: var(--color-text-muted);
            letter-spacing: 0.5px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            color: var(--color-text-secondary);
            font-size: 14px;
            text-decoration: none;
            transition: color 0.2s;
            padding: 4px 0;
            display: inline-block;
        }

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

        .footer-contact {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .footer-bottom {
            padding-top: 28px;
            text-align: center;
        }

        .footer-copy {
            font-size: 12px;
            color: var(--color-text-muted);
        }

        /* ========== Scrollbar ========== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-base);
        }

        ::-webkit-scrollbar-thumb {
            background: rgba(201, 165, 104, 0.3);
            border-radius: 3px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: rgba(201, 165, 104, 0.5);
        }

        /* ========== Responsive ========== */
        @media (max-width: 991px) {
            .nav-toggle {
                display: flex;
            }

            .site-header {
                backdrop-filter: none;
                -webkit-backdrop-filter: none;
            }

            .main-nav {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100vh;
                background: rgba(11, 11, 13, 0.98);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 36px;
                z-index: 200;
                opacity: 0;
                visibility: hidden;
                pointer-events: none;
                transition: opacity 0.3s ease, visibility 0.3s ease;
                margin: 0;
                padding: 0;
            }

            .main-nav.open {
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
            }

            .main-nav .nav-link {
                font-family: var(--font-display);
                font-size: 24px;
                font-weight: 600;
                color: var(--color-text-main);
                padding: 12px 24px;
                min-height: 44px;
            }

            .main-nav .nav-link::after {
                bottom: 6px;
            }

            .mobile-nav-footer {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 10px;
                position: absolute;
                bottom: 48px;
                left: 0;
                right: 0;
                text-align: center;
            }

            .official-badge {
                font-size: 12px;
                color: var(--color-text-secondary);
                border: 1px solid var(--color-border);
                padding: 4px 14px;
                border-radius: 999px;
                letter-spacing: 2px;
            }

            .domain-text {
                font-size: 12px;
                color: var(--color-text-muted);
                letter-spacing: 0.5px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .article-title {
                font-size: 28px;
            }

            .article-header {
                padding-top: 32px;
            }

            .article-content {
                padding-left: 16px;
                padding-right: 16px;
            }

            .article-content p {
                font-size: 15px;
                line-height: 1.85;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-tags {
                padding-left: 16px;
                padding-right: 16px;
            }

            .breadcrumb-bar {
                padding-left: 16px;
                padding-right: 16px;
                margin-top: 20px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-img {
                height: 160px;
            }

            .related-section {
                margin-top: 56px;
                padding: 0 16px;
            }

            .section-title {
                font-size: 24px;
            }

            .article-more {
                margin-left: 16px;
                margin-right: 16px;
                padding-left: 16px;
                padding-right: 16px;
            }

            .article-back {
                padding: 48px 16px 64px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-desc {
                max-width: 100%;
            }

            .logo-main {
                font-size: 22px;
            }

            .not-found {
                margin-left: 16px;
                margin-right: 16px;
                padding: 56px 16px;
            }
        }

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

            .logo-sub {
                display: none;
            }

            .article-meta {
                gap: 14px;
                flex-direction: column;
                align-items: flex-start;
            }

            .breadcrumb-bar .current {
                max-width: 200px;
            }

            .related-img {
                height: 140px;
            }

            .article-title {
                font-size: 24px;
                line-height: 1.35;
            }

            .btn-primary {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --bg-base: #0B0B0D;
            --bg-surface: #15161A;
            --bg-surface-2: #1D1F24;
            --color-primary: #C9A568;
            --color-primary-dark: #9A7B3E;
            --color-primary-light: #E8D5A9;
            --color-accent: #C4533D;
            --color-text-main: #EFE9DD;
            --color-text-secondary: #A49E93;
            --color-text-muted: #6B6B70;
            --color-border: rgba(201, 165, 104, 0.25);
            --color-success: #4E9A6C;
            --font-display: "Noto Serif SC", "Songti SC", "SimSun", serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.03), 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
            --radius-card: 12px;
            --radius-badge: 6px;
            --radius-btn: 4px;
            --spacing-section: 100px;
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-base);
            color: var(--color-text-main);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            background: rgba(11, 11, 13, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(201, 165, 104, 0.18);
            height: 72px;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }

        .logo-main {
            font-family: var(--font-display);
            font-size: 26px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.02em;
        }

        .logo-sub {
            font-family: var(--font-body);
            font-size: 13px;
            color: var(--color-text-secondary);
            letter-spacing: 0.2em;
            font-weight: 400;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-main);
            position: relative;
            padding: 8px 2px;
            letter-spacing: 0.02em;
            transition: color 0.2s ease;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width 0.3s ease;
            border-radius: 1px;
        }

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

        .nav-link:hover::after {
            width: 100%;
        }

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

        .nav-link.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            gap: 7px;
            border-radius: 6px;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .nav-toggle.open span:first-child {
            transform: translateY(4.5px) rotate(45deg);
        }

        .nav-toggle.open span:last-child {
            transform: translateY(-4.5px) rotate(-45deg);
        }

        /* Mobile Drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-base);
            z-index: 99;
            padding: 48px 24px;
            flex-direction: column;
            gap: 12px;
            border-top: 1px solid var(--color-border);
        }

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

        .mobile-drawer .nav-link {
            font-family: var(--font-display);
            font-size: 24px;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-drawer-link {
            font-family: var(--font-display);
            font-size: 24px;
            color: var(--color-text-main);
            padding: 14px 0;
            transition: color 0.2s;
        }

        .mobile-drawer-link:hover {
            color: var(--color-primary);
        }

        .mobile-drawer-footer {
            margin-top: auto;
            padding-top: 32px;
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .drawer-badge {
            display: inline-block;
            font-size: 12px;
            color: var(--color-primary);
            border: 1px solid var(--color-border);
            padding: 2px 10px;
            border-radius: 999px;
            width: fit-content;
        }

        /* Hero / Page Banner */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #141519 0%, #0B0B0D 70%);
            border-bottom: 1px solid rgba(201, 165, 104, 0.12);
            padding: 72px 0;
            min-height: 240px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--color-primary);
        }

        .banner-inner {
            position: relative;
            z-index: 2;
            padding-left: 32px;
        }

        .banner-inner h1 {
            font-family: var(--font-display);
            font-size: 40px;
            line-height: 1.3;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .banner-inner p {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }

        /* Section Base */
        .section {
            padding: 100px 0;
        }

        .section-sm {
            padding: 64px 0;
        }

        .section:last-child {
            padding-bottom: 100px;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-label {
            font-size: 13px;
            letter-spacing: 0.3em;
            color: var(--color-primary);
            text-transform: uppercase;
            margin-bottom: 12px;
            font-weight: 500;
        }

        .section-title {
            font-family: var(--font-display);
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            position: relative;
            padding-left: 20px;
        }

        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.1em;
            width: 4px;
            height: 0.85em;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .section-title span {
            color: var(--color-primary);
        }

        .section-sub {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-top: 16px;
            max-width: 720px;
            line-height: 1.8;
        }

        /* Category 2 Layout — Reward Interaction (top-bottom) */
        .reward-list-section {
            padding: 100px 0 40px;
        }

        .reward-list {
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(201, 165, 104, 0.2);
            border-radius: 12px;
            overflow: hidden;
            background: var(--bg-surface);
        }

        .reward-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: background 0.25s ease;
            gap: 24px;
        }

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

        .reward-item:hover {
            background: var(--bg-surface-2);
        }

        .reward-info {
            display: flex;
            align-items: center;
            gap: 24px;
            flex: 1;
        }

        .reward-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(201, 165, 104, 0.12);
            border: 1px solid rgba(201, 165, 104, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .reward-content h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--color-text-main);
        }

        .reward-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        .reward-arrow {
            color: var(--color-primary);
            font-size: 22px;
            flex-shrink: 0;
            font-weight: 300;
            transition: transform 0.25s ease;
        }

        .reward-item:hover .reward-arrow {
            transform: translateX(6px);
        }

        .reward-badge-hot {
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 4px;
            font-weight: 600;
            letter-spacing: 0.05em;
            flex-shrink: 0;
        }

        .reward-badge-new {
            background: var(--color-success);
            color: #fff;
            font-size: 12px;
            padding: 3px 12px;
            border-radius: 4px;
            font-weight: 600;
            letter-spacing: 0.05em;
            flex-shrink: 0;
        }

        /* Rules Card */
        .rules-section {
            padding: 40px 0 100px;
        }

        .rules-card {
            background: var(--bg-surface);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .rules-card-header {
            padding: 24px 32px;
            border-bottom: 1px solid rgba(201, 165, 104, 0.2);
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .rules-card-header h2 {
            font-family: var(--font-display);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
        }

        .rules-card-body {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }

        .rules-col {
            padding: 28px 32px;
        }

        .rules-col:first-child {
            border-right: 1px solid rgba(201, 165, 104, 0.15);
        }

        .rules-col h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .rules-col h3::before {
            content: "";
            width: 3px;
            height: 14px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .rules-col p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .rules-col ul {
            list-style: none;
            margin-top: 8px;
        }

        .rules-col ul li {
            font-size: 14px;
            color: var(--color-text-secondary);
            padding-left: 16px;
            position: relative;
            line-height: 2;
        }

        .rules-col ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.85em;
            width: 6px;
            height: 6px;
            border: 1px solid var(--color-primary);
            border-radius: 50%;
            background: transparent;
        }

        /* CTA Banner */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(rgba(11, 11, 13, 0.92), rgba(11, 11, 13, 0.92)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-top: 1px solid rgba(201, 165, 104, 0.18);
            border-bottom: 1px solid rgba(201, 165, 104, 0.18);
            text-align: center;
        }

        .cta-title {
            font-family: var(--font-display);
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .cta-title span {
            color: var(--color-primary);
        }

        .cta-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            text-decoration: none;
            line-height: 1;
            letter-spacing: 0.03em;
        }

        .btn-lg {
            height: 56px;
            padding: 0 40px;
            font-size: 16px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #C9A568, #B8924C);
            color: #1A1A1D;
            box-shadow: 0 8px 24px rgba(201, 165, 104, 0.25);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #d4b37c, #c49e58);
            box-shadow: 0 10px 28px rgba(201, 165, 104, 0.35);
            color: #1A1A1D;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 4px 12px rgba(201, 165, 104, 0.25);
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline:hover {
            background: rgba(201, 165, 104, 0.1);
            color: var(--color-primary-light);
        }

        .btn-outline:active {
            border-color: var(--color-primary-dark);
        }

        /* FAQ */
        .faq-section {
            padding: 100px 0;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 4px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-main);
            transition: color 0.2s;
            background: transparent;
            width: 100%;
            text-align: left;
        }

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

        .faq-question-text {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .faq-q-icon {
            color: var(--color-primary);
            font-weight: 700;
            font-size: 17px;
        }

        .faq-plus-icon {
            color: var(--color-primary);
            font-size: 22px;
            font-weight: 400;
            transition: transform 0.3s ease;
            flex-shrink: 0;
            width: 24px;
            text-align: center;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding-left: 28px;
        }

        .faq-answer-inner {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            padding-bottom: 20px;
        }

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

        /* Footer */
        .site-footer {
            background: #070709;
            border-top: 1px solid rgba(201, 165, 104, 0.2);
            padding-top: 64px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
            display: inline-flex;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 16px;
        }

        .footer-domain {
            font-size: 13px;
            color: var(--color-text-muted);
            letter-spacing: 0.06em;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 18px;
            letter-spacing: 0.05em;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: var(--color-text-secondary);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0 24px;
            text-align: center;
        }

        .footer-copy {
            font-size: 13px;
            color: var(--color-text-muted);
            letter-spacing: 0.02em;
        }

        /* Select / Other */
        .faq-highlight {
            color: var(--color-primary);
            font-weight: 600;
        }

        .note-text {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 12px;
        }

        .btn-row {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .divider-line {
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(201, 165, 104, 0.3), transparent);
            margin: 32px 0;
        }

        .gold-dot {
            color: var(--color-primary);
        }

        /* Focus visible */
        a:focus-visible,
        .faq-question:focus-visible,
        .nav-toggle:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Responsive */
        @media (max-width: 1200px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .main-nav {
                gap: 28px;
            }
        }

        @media (max-width: 992px) {
            :root {
                --spacing-section: 80px;
            }

            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .page-banner {
                padding: 56px 0;
                min-height: 200px;
            }

            .banner-inner h1 {
                font-size: 34px;
            }

            .section {
                padding: 80px 0;
            }

            .section-title {
                font-size: 28px;
            }

            .rules-card-body {
                grid-template-columns: 1fr;
            }

            .rules-col:first-child {
                border-right: none;
                border-bottom: 1px solid rgba(201, 165, 104, 0.15);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

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

            .room-area2 {
                display: flex;
            }

            .banner-inner {
                padding-left: 20px;
            }

            .banner-inner h1 {
                font-size: 28px;
            }

            .section {
                padding: 64px 0;
            }

            .reward-list-section {
                padding-top: 64px;
            }

            .rules-section {
                padding-bottom: 64px;
            }

            .reward-item {
                padding: 20px 16px;
                flex-wrap: wrap;
            }

            .reward-info {
                flex-wrap: wrap;
                gap: 12px;
            }

            .reward-content {
                width: calc(100% - 60px);
            }

            .reward-icon {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }

            .reward-badge-hot,
            .reward-badge-new {
                margin-left: auto;
            }

            .rules-card-header {
                padding: 20px 20px;
            }

            .rules-card-header h2 {
                font-size: 19px;
            }

            .rules-col {
                padding: 24px 20px;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-title {
                font-size: 28px;
            }

            .btn-lg {
                width: 100%;
                max-width: 320px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }

            .faq-section {
                padding: 64px 0;
            }

            .faq-question {
                font-size: 15px;
                padding: 18px 0;
            }

            .faq-answer-inner {
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .banner-inner p {
                font-size: 14px;
            }

            .logo-main {
                font-size: 24px;
            }

            .logo-sub {
                font-size: 12px;
            }

            .reward-content h3 {
                font-size: 15px;
            }

            .reward-content p {
                font-size: 13px;
            }

            .reward-arrow {
                font-size: 20px;
            }

            .section-title {
                font-size: 24px;
                padding-left: 14px;
            }

            .section-title::before {
                width: 3px;
            }

            .cta-title {
                font-size: 24px;
            }

            .btn-row .btn {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .reward-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .reward-info {
                width: 100%;
            }

            .reward-arrow {
                display: none;
            }

            .reward-badge-hot,
            .reward-badge-new {
                margin-left: 0;
                margin-left: auto;
            }

            .rules-col ul li {
                line-height: 2.2;
            }
        }

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