/* roulang page: index */
:root {
            --color-primary: #0A0E1A;
            --color-primary-light: #151D30;
            --color-accent: #00E5FF;
            --color-accent-deep: #00A8C5;
            --color-gold: #F0B429;
            --color-gold-deep: #E09F1F;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F4F7FC;
            --color-text: #1A2233;
            --color-text-sub: #5A6B85;
            --color-border: #E2E8F0;
            --color-shadow: rgba(10, 14, 26, 0.08);
            --color-shadow-hover: rgba(10, 14, 26, 0.14);
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-pill: 20px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1200px;
            --nav-height: 68px;
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }
        a:hover {
            text-decoration: none;
            color: inherit;
        }
        ul, ol {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        button, input, select, textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-primary);
            margin: 0 0 12px;
        }
        h1 {
            font-size: 38px;
            letter-spacing: 0.5px;
            color: #FFFFFF;
        }
        h2 {
            font-size: 26px;
            letter-spacing: 0.3px;
            color: var(--color-primary);
        }
        h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-primary);
        }
        p {
            margin-bottom: 16px;
            color: var(--color-text-sub);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-title h2 {
            font-size: 28px;
            font-weight: 700;
        }
        .section-title p {
            max-width: 620px;
            margin: 8px auto 0;
            font-size: 15px;
            color: var(--color-text-sub);
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-accent-deep);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-label.dark {
            color: var(--color-accent);
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-align: center;
            line-height: 1.5;
            border: 1px solid transparent;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--color-gold), var(--color-gold-deep));
            color: var(--color-primary) !important;
            border-color: transparent;
        }
        .btn-gold:hover {
            background: linear-gradient(135deg, #F8C64D, var(--color-gold));
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(240, 180, 41, 0.4);
        }
        .btn-outline-accent {
            background: transparent;
            color: var(--color-accent) !important;
            border-color: var(--color-accent);
        }
        .btn-outline-accent:hover {
            background: rgba(0, 229, 255, 0.12);
            transform: translateY(-1px);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
        }
        .btn-outline-white {
            background: transparent;
            color: #FFFFFF !important;
            border-color: rgba(255, 255, 255, 0.4);
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #FFFFFF;
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.8px;
            line-height: 1.5;
        }
        .badge-accent {
            background: rgba(0, 229, 255, 0.12);
            color: var(--color-accent-deep);
            border: 1px solid rgba(0, 229, 255, 0.25);
        }
        .badge-accent-dark {
            background: rgba(0, 229, 255, 0.15);
            color: var(--color-accent);
            border: 1px solid rgba(0, 229, 255, 0.3);
        }
        .badge-gold {
            background: rgba(240, 180, 41, 0.12);
            color: var(--color-gold-deep);
            border: 1px solid rgba(240, 180, 41, 0.3);
        }
        .badge-gold-dark {
            background: rgba(240, 180, 41, 0.16);
            color: var(--color-gold);
            border: 1px solid rgba(240, 180, 41, 0.35);
        }
        .card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
            transition: all 0.3s ease;
        }
        .card:hover {
            box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
            transform: translateY(-3px);
        }
        .card-dark {
            background: var(--color-primary-light);
            border: 1px solid #223150;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.08);
        }
        .card-dark:hover {
            box-shadow: 0 0 28px rgba(0, 229, 255, 0.16);
            border-color: rgba(0, 229, 255, 0.3);
        }
        .card-body {
            padding: 24px;
        }
        /* Navigation */
        header.site-header {
            background: var(--color-primary);
            border-bottom: 1px solid rgba(0, 229, 255, 0.25);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .site-header .logo-area {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .site-header .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--color-gold);
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            display: inline-block;
            flex-shrink: 0;
        }
        .site-header .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .site-header .logo-text span {
            color: var(--color-gold);
        }
        .site-header .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .site-header .desktop-nav a.nav-link {
            font-size: 14px;
            color: #B8C4D6;
            font-weight: 500;
            letter-spacing: 0.5px;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
            white-space: nowrap;
        }
        .site-header .desktop-nav a.nav-link:hover {
            color: #FFFFFF;
            border-bottom-color: rgba(0, 229, 255, 0.4);
        }
        .site-header .desktop-nav a.nav-link.active {
            color: #FFFFFF;
            border-bottom-color: var(--color-accent);
            box-shadow: 0 1px 12px rgba(0, 229, 255, 0.8);
        }
        .site-header .nav-cta {
            margin-left: 12px;
            flex-shrink: 0;
        }
        .hamburger-btn {
            display: none;
            font-size: 24px;
            color: #FFFFFF;
            background: none;
            border: none;
            padding: 8px;
            line-height: 1;
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            background: var(--color-primary);
            border-top: 1px solid rgba(0, 229, 255, 0.2);
            padding: 12px 20px;
            flex-direction: column;
            gap: 0;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            z-index: 999;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a.nav-link {
            display: block;
            padding: 14px 0;
            color: #B8C4D6;
            font-size: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            letter-spacing: 0.5px;
        }
        .mobile-menu a.nav-link:last-child {
            border-bottom: none;
        }
        .mobile-menu a.nav-link.active {
            color: var(--color-accent);
            font-weight: 600;
        }
        /* Hero */
        .hero-section {
            background: var(--color-primary);
            background-image: radial-gradient(circle at 80% 20%, rgba(0, 229, 255, 0.12), transparent 55%), radial-gradient(circle at 20% 80%, rgba(240, 180, 41, 0.06), transparent 45%);
            padding: 72px 0 80px;
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
            background-size: 36px 36px;
            pointer-events: none;
        }
        .hero-section .hero-grid {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
        }
        .hero-section .hero-left {
            flex: 1.1;
        }
        .hero-section .hero-right {
            flex: 0.9;
            min-width: 340px;
        }
        .hero-section .hero-tagline {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-gold);
            margin-bottom: 16px;
            background: rgba(240, 180, 41, 0.1);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(240, 180, 41, 0.25);
        }
        .hero-section h1 {
            font-size: 42px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }
        .hero-section h1 .highlight-gold {
            color: var(--color-gold);
        }
        .hero-section h1 .highlight-accent {
            color: var(--color-accent);
        }
        .hero-section .hero-desc {
            font-size: 16px;
            color: #B8C4D6;
            line-height: 1.8;
            max-width: 540px;
            margin-bottom: 28px;
        }
        .hero-section .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }
        .hero-section .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }
        .hero-section .hero-stat-item {
            text-align: left;
        }
        .hero-section .hero-stat-item .stat-value {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 0.5px;
        }
        .hero-section .hero-stat-item .stat-label {
            font-size: 12px;
            color: #B8C4D6;
            letter-spacing: 1px;
        }
        .hero-rank-card {
            background: rgba(21, 29, 48, 0.85);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 12px;
            padding: 20px 22px;
            backdrop-filter: blur(8px);
            box-shadow: 0 0 24px rgba(0, 229, 255, 0.1);
        }
        .hero-rank-card .rank-card-title {
            font-size: 14px;
            font-weight: 600;
            color: #B8C4D6;
            letter-spacing: 1px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .hero-rank-card .rank-row {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-rank-card .rank-row:last-child {
            border-bottom: none;
        }
        .hero-rank-card .rank-number {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            background: var(--color-primary-light);
            border: 1px solid rgba(255, 255, 255, 0.1);
            flex-shrink: 0;
        }
        .hero-rank-card .rank-number.rank-1 {
            background: rgba(240, 180, 41, 0.2);
            border-color: var(--color-gold);
            color: var(--color-gold);
        }
        .hero-rank-card .rank-number.rank-2 {
            background: rgba(192, 192, 192, 0.15);
            border-color: #C0C0C0;
            color: #C0C0C0;
        }
        .hero-rank-card .rank-number.rank-3 {
            background: rgba(205, 127, 50, 0.18);
            border-color: #CD7F32;
            color: #CD7F32;
        }
        .hero-rank-card .rank-info {
            flex: 1;
            min-width: 0;
        }
        .hero-rank-card .rank-name {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hero-rank-card .rank-level {
            font-size: 12px;
            color: #B8C4D6;
        }
        .hero-rank-card .rank-value {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-gold);
            flex-shrink: 0;
        }
        /* Entry Matrix */
        .entry-section {
            background: var(--color-bg);
        }
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }
        .entry-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: 24px 16px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: 0 4px 16px var(--color-shadow);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .entry-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 28px var(--color-shadow-hover);
            border-color: rgba(0, 229, 255, 0.5);
        }
        .entry-card .entry-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
            font-size: 20px;
            color: var(--color-accent-deep);
            font-weight: 700;
        }
        .entry-card h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--color-primary);
        }
        .entry-card p {
            font-size: 12px;
            color: var(--color-text-sub);
            margin-bottom: 0;
            line-height: 1.5;
        }
        /* Scene Demo */
        .scene-section {
            background: var(--color-bg-alt);
        }
        .scene-block {
            display: flex;
            align-items: center;
            gap: 48px;
            padding: 32px 0;
        }
        .scene-block.reverse {
            flex-direction: row-reverse;
        }
        .scene-block .scene-text {
            flex: 1;
        }
        .scene-block .scene-image {
            flex: 1;
            min-width: 300px;
        }
        .scene-block .scene-image img {
            width: 100%;
            border-radius: 10px;
            border: 1px solid var(--color-border);
            box-shadow: 0 8px 28px var(--color-shadow);
        }
        .scene-block .scene-sub-label {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-accent-deep);
            margin-bottom: 8px;
        }
        .scene-block h3 {
            font-size: 22px;
            margin-bottom: 12px;
        }
        .scene-block .scene-desc {
            font-size: 15px;
            color: var(--color-text-sub);
            margin-bottom: 16px;
        }
        .scene-block .scene-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .scene-block .scene-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.6;
        }
        .scene-block .scene-list li::before {
            content: '';
            display: inline-block;
            width: 8px;
            height: 8px;
            background: var(--color-accent);
            flex-shrink: 0;
            margin-top: 7px;
            transform: rotate(45deg);
        }
        /* Task Progress */
        .task-section {
            background: var(--color-bg);
        }
        .task-progress-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .task-step {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            box-shadow: 0 4px 16px var(--color-shadow);
            transition: all 0.3s ease;
            position: relative;
        }
        .task-step:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 28px var(--color-shadow-hover);
        }
        .task-step .step-number {
            font-size: 40px;
            font-weight: 700;
            color: rgba(0, 229, 255, 0.2);
            position: absolute;
            top: 12px;
            right: 16px;
        }
        .task-step .step-bar {
            height: 4px;
            background: var(--color-border);
            border-radius: 2px;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .task-step .step-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
            border-radius: 2px;
            transition: width 0.6s ease;
        }
        .task-step h3 {
            font-size: 16px;
            margin-bottom: 6px;
        }
        .task-step p {
            font-size: 13px;
            color: var(--color-text-sub);
            margin-bottom: 0;
        }
        /* Reward Preview */
        .reward-section {
            background: var(--color-bg-alt);
        }
        .reward-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .reward-card {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: 0 4px 16px var(--color-shadow);
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .reward-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 28px var(--color-shadow-hover);
        }
        .reward-card .reward-glow {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            margin: 0 auto 14px;
            background: radial-gradient(circle, rgba(240, 180, 41, 0.2), rgba(240, 180, 41, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--color-gold);
            border: 1px solid rgba(240, 180, 41, 0.3);
        }
        .reward-card h3 {
            font-size: 17px;
            margin-bottom: 6px;
        }
        .reward-card p {
            font-size: 13px;
            color: var(--color-text-sub);
            margin-bottom: 0;
        }
        /* News */
        .news-section {
            background: var(--color-bg);
        }
        .news-layout {
            display: flex;
            gap: 32px;
        }
        .news-main-list {
            flex: 1.6;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 20px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: 0 4px 16px var(--color-shadow);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .news-item:hover {
            box-shadow: 0 8px 24px var(--color-shadow-hover);
            transform: translateY(-2px);
            border-left: 3px solid var(--color-accent);
        }
        .news-item .news-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent-deep);
            letter-spacing: 1px;
            white-space: nowrap;
            padding-top: 2px;
            min-width: 52px;
        }
        .news-item .news-content h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-primary);
        }
        .news-item .news-content p {
            font-size: 13px;
            color: var(--color-text-sub);
            margin-bottom: 0;
            line-height: 1.65;
        }
        .news-sider {
            flex: 0.9;
            background: var(--color-bg-alt);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            border: 1px solid var(--color-border);
        }
        .news-sider h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
            color: var(--color-primary);
        }
        .news-sider ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .news-sider ul li {
            font-size: 13px;
            color: var(--color-text-sub);
            padding-bottom: 10px;
            border-bottom: 1px dashed var(--color-border);
            cursor: pointer;
            transition: color 0.25s ease;
        }
        .news-sider ul li:hover {
            color: var(--color-accent-deep);
        }
        .news-sider ul li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        /* Testimonials */
        .testimonial-section {
            background: var(--color-bg-alt);
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }
        .testimonial-card {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: 0 4px 16px var(--color-shadow);
            transition: all 0.3s ease;
        }
        .testimonial-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 28px var(--color-shadow-hover);
        }
        .testimonial-card .testimonial-text {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }
        .testimonial-card .testimonial-author .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
        }
        .testimonial-card .testimonial-author .author-info {
            flex: 1;
        }
        .testimonial-card .testimonial-author .author-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
        }
        .testimonial-card .testimonial-author .author-source {
            font-size: 11px;
            color: var(--color-text-sub);
        }
        /* Partner Tags */
        .partner-section {
            background: var(--color-bg);
        }
        .partner-tag-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
        }
        .partner-tag {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 18px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
        }
        .partner-tag:hover {
            border-color: var(--color-accent);
            box-shadow: 0 4px 16px var(--color-shadow);
        }
        .partner-tag .tag-dot {
            width: 10px;
            height: 10px;
            background: var(--color-accent);
            transform: rotate(45deg);
            flex-shrink: 0;
        }
        .partner-tag .tag-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            white-space: nowrap;
        }
        .partner-tag .tag-desc {
            font-size: 12px;
            color: var(--color-text-sub);
            flex: 1;
            text-align: right;
        }
        /* Brand Intro */
        .brand-section {
            background: var(--color-bg-alt);
            padding: 48px 0;
        }
        .brand-intro-card {
            background: var(--color-bg);
            border-radius: 12px;
            padding: 32px 36px;
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 20px var(--color-shadow);
            display: flex;
            gap: 32px;
            align-items: flex-start;
        }
        .brand-intro-card .brand-avatar {
            width: 72px;
            height: 72px;
            background: var(--color-primary);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            color: var(--color-gold);
            flex-shrink: 0;
        }
        .brand-intro-card .brand-content h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .brand-intro-card .brand-content p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-sub);
            margin-bottom: 10px;
        }
        .brand-intro-card .brand-content p:last-child {
            margin-bottom: 0;
        }
        /* FAQ */
        .faq-section {
            background: var(--color-bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: 0 2px 10px var(--color-shadow);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            box-shadow: 0 4px 16px var(--color-shadow);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-primary);
            user-select: none;
            transition: background-color 0.25s ease;
            background: #FFFFFF;
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question .faq-arrow {
            font-size: 16px;
            color: var(--color-accent-deep);
            transition: transform 0.25s ease;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            background: var(--color-bg-alt);
            border-left: 3px solid var(--color-accent);
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 16px 22px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-sub);
        }
        /* CTA Download */
        .cta-download-section {
            background: var(--color-primary);
            background-image: radial-gradient(circle at 30% 50%, rgba(0, 229, 255, 0.1), transparent 50%), radial-gradient(circle at 70% 80%, rgba(240, 180, 41, 0.08), transparent 45%);
            padding: 64px 0;
            text-align: center;
        }
        .cta-download-section h2 {
            color: #FFFFFF;
            font-size: 28px;
            margin-bottom: 12px;
        }
        .cta-download-section p {
            color: #B8C4D6;
            font-size: 15px;
            max-width: 520px;
            margin: 0 auto 28px;
        }
        .cta-download-section .cta-form {
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-download-section .cta-form input {
            flex: 1;
            min-width: 240px;
            padding: 12px 18px;
            border-radius: var(--radius-btn);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
        }
        .cta-download-section .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .cta-download-section .cta-form input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
        }
        /* Footer */
        footer.site-footer {
            background: var(--color-primary);
            color: #B8C4D6;
            padding: 48px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
        }
        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand .footer-logo .logo-diamond {
            width: 18px;
            height: 18px;
            background: var(--color-gold);
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            display: inline-block;
        }
        .footer-brand p {
            font-size: 13px;
            color: #5A6B85;
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-links h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links ul li a {
            font-size: 13px;
            color: #5A6B85;
            transition: color 0.25s ease;
        }
        .footer-links ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            background: #070A12;
            padding: 16px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-bottom .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            font-size: 12px;
            color: #5A6B85;
        }
        .footer-bottom a {
            color: #5A6B85;
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 64px;
            }
            .hero-section .hero-grid {
                gap: 32px;
            }
            .entry-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .task-progress-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reward-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                flex-direction: column;
            }
            .partner-tag-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scene-block, .scene-block.reverse {
                flex-direction: column;
                gap: 24px;
            }
            .scene-block .scene-image, .scene-block.reverse .scene-image {
                min-width: auto;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
                --nav-height: 60px;
            }
            .site-header .desktop-nav {
                display: none;
            }
            .site-header .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .hero-section {
                padding: 40px 0 48px;
                min-height: auto;
            }
            .hero-section .hero-grid {
                flex-direction: column;
                gap: 28px;
            }
            .hero-section .hero-right {
                min-width: auto;
                width: 100%;
            }
            .hero-section h1 {
                font-size: 32px;
            }
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .brand-intro-card {
                flex-direction: column;
                gap: 16px;
                padding: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom .footer-bottom-inner {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 14px;
            }
            .hero-section .hero-actions {
                flex-direction: column;
                width: 100%;
                gap: 10px;
            }
            .hero-section .hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .cta-download-section .cta-form {
                flex-direction: column;
                width: 100%;
            }
            .cta-download-section .cta-form input {
                min-width: auto;
                width: 100%;
            }
            .task-progress-grid {
                grid-template-columns: 1fr;
            }
            .reward-grid {
                grid-template-columns: 1fr;
            }
            .partner-tag-grid {
                grid-template-columns: 1fr;
            }
            .partner-tag .tag-desc {
                text-align: left;
                font-size: 11px;
            }
            h1 {
                font-size: 30px;
            }
            h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .entry-grid {
                grid-template-columns: 1fr;
            }
            .hero-section .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .news-item {
                flex-direction: column;
                gap: 6px;
                padding: 14px 16px;
            }
            .news-item .news-date {
                padding-top: 0;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer-inner {
                padding: 12px 16px;
                font-size: 13px;
            }
            .container, .container-wide {
                padding: 0 14px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0A0E1A;
            --color-primary-light: #151D30;
            --color-accent: #00E5FF;
            --color-accent-deep: #00A8C5;
            --color-gold: #F0B429;
            --color-gold-deep: #E09F1F;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F4F7FC;
            --color-text: #1A2233;
            --color-text-sub: #5A6B85;
            --color-border: #E2E8F0;
            --color-shadow: rgba(10, 14, 26, 0.08);
            --color-shadow-hover: rgba(10, 14, 26, 0.14);
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-pill: 20px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1200px;
            --nav-height: 68px;
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
                --nav-height: 60px;
            }
        }

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

        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
            padding: 0;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .container-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-title h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-primary);
        }

        .section-title p {
            max-width: 620px;
            margin: 8px auto 0;
            font-size: 15px;
            color: var(--color-text-sub);
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-accent-deep);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-label.dark {
            color: var(--color-accent);
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-align: center;
            line-height: 1.5;
            border: 1px solid transparent;
        }

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

        .btn-gold {
            background: linear-gradient(135deg, var(--color-gold), var(--color-gold-deep));
            color: var(--color-primary) !important;
            border-color: transparent;
        }

        .btn-gold:hover {
            background: linear-gradient(135deg, #F8C64D, var(--color-gold));
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(240, 180, 41, 0.4);
        }

        .btn-outline-accent {
            background: transparent;
            color: var(--color-accent) !important;
            border-color: var(--color-accent);
        }

        .btn-outline-accent:hover {
            background: rgba(0, 229, 255, 0.12);
            transform: translateY(-1px);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
        }

        .btn-outline-white {
            background: transparent;
            color: #FFFFFF !important;
            border-color: rgba(255, 255, 255, 0.4);
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #FFFFFF;
            transform: translateY(-1px);
        }

        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.8px;
            line-height: 1.5;
        }

        .badge-accent {
            background: rgba(0, 229, 255, 0.12);
            color: var(--color-accent-deep);
            border: 1px solid rgba(0, 229, 255, 0.25);
        }

        .badge-accent-dark {
            background: rgba(0, 229, 255, 0.15);
            color: var(--color-accent);
            border: 1px solid rgba(0, 229, 255, 0.3);
        }

        .badge-gold {
            background: rgba(240, 180, 41, 0.12);
            color: var(--color-gold-deep);
            border: 1px solid rgba(240, 180, 41, 0.3);
        }

        .badge-gold-dark {
            background: rgba(240, 180, 41, 0.16);
            color: var(--color-gold);
            border: 1px solid rgba(240, 180, 41, 0.35);
        }

        .card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
            transition: all 0.3s ease;
        }

        .card:hover {
            box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
            transform: translateY(-3px);
        }

        /* Header / Navigation */
        .site-header {
            background: var(--color-primary);
            border-bottom: 1px solid rgba(0, 229, 255, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 10px;
            height: 10px;
            background: var(--color-gold);
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            display: inline-block;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            line-height: 1;
        }

        .logo-text span {
            color: var(--color-gold);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0 auto;
        }

        .desktop-nav .nav-link {
            font-size: 14px;
            color: #B8C4D6;
            letter-spacing: 0.5px;
            padding: 4px 0;
            position: relative;
            white-space: nowrap;
        }

        .desktop-nav .nav-link:hover {
            color: #FFFFFF;
        }

        .desktop-nav .nav-link.active {
            color: #FFFFFF;
            box-shadow: 0 1px 12px rgba(0, 229, 255, 0.8);
        }

        .desktop-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-accent);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.8);
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            flex-shrink: 0;
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--color-primary-light);
            border-bottom: 1px solid rgba(0, 229, 255, 0.2);
            flex-direction: column;
            padding: 16px 20px;
            gap: 4px;
            z-index: 999;
        }

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

        .mobile-menu .nav-link {
            color: #B8C4D6;
            font-size: 15px;
            padding: 12px 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: block;
            transition: all 0.2s;
        }

        .mobile-menu .nav-link:hover,
        .mobile-menu .nav-link.active {
            color: #FFFFFF;
        }

        .mobile-menu .nav-link.active {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Hero */
        .hero-short {
            background: var(--color-primary);
            background-image: radial-gradient(circle at 80% 20%, rgba(0, 229, 255, 0.12), transparent 55%);
            padding: 48px 0;
            position: relative;
            min-height: 240px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(0, 229, 255, 0.15);
        }

        .hero-short .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .hero-short-title {
            color: #FFFFFF;
            font-size: 32px;
            font-weight: 700;
            letter-spacing: 0.5px;
            line-height: 1.3;
            margin-bottom: 8px;
        }

        .hero-short-title .highlight {
            color: var(--color-gold);
        }

        .hero-short-desc {
            color: #B8C4D6;
            font-size: 15px;
            max-width: 480px;
            line-height: 1.6;
            margin: 0;
        }

        /* Hall List */
        .hall-list-section {
            background: var(--color-bg);
        }

        .hall-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hall-card {
            display: flex;
            align-items: stretch;
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
            overflow: hidden;
            transition: all 0.3s ease;
            position: relative;
        }

        .hall-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-accent);
            transition: background 0.3s ease;
        }

        .hall-card:hover::before {
            background: var(--color-gold);
        }

        .hall-card:hover {
            box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
            transform: translateY(-2px);
        }

        .hall-card-img {
            flex: 0 0 200px;
            min-height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .hall-card-body {
            flex: 1;
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .hall-rank {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-gold);
            letter-spacing: 1px;
            line-height: 1;
            margin-bottom: 8px;
        }

        .hall-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
        }

        .hall-card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }

        .hall-card-desc {
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .hall-card-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hall-card .btn-outline-accent {
            font-size: 13px;
            padding: 8px 18px;
        }

        /* Steps Section */
        .steps-section {
            background: var(--color-bg-alt);
        }

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

        .step-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            padding: 24px 20px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .step-card:hover {
            box-shadow: 0 8px 24px var(--color-shadow-hover);
            transform: translateY(-3px);
        }

        .step-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 20px;
            color: var(--color-accent-deep);
        }

        .step-num {
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--color-gold-deep);
            margin-bottom: 4px;
        }

        .step-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .step-desc {
            font-size: 13px;
            color: var(--color-text-sub);
            line-height: 1.6;
        }

        /* Stats Section */
        .stats-section {
            background: var(--color-primary);
            background-image: radial-gradient(circle at 20% 30%, rgba(0, 229, 255, 0.08), transparent 50%);
            padding: 56px 0;
        }

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

        .stat-item {
            text-align: center;
        }

        .stat-value {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-gold);
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: #B8C4D6;
            margin-top: 4px;
        }

        /* FAQ */
        .faq-section {
            background: var(--color-bg-alt);
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            border: 1px solid var(--color-border);
            overflow: hidden;
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.25s ease;
        }

        .faq-question::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 16px;
            color: var(--color-accent-deep);
            transition: transform 0.25s ease;
        }

        .faq-item.active .faq-question::after {
            transform: rotate(180deg);
            color: var(--color-gold);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.7;
            margin: 0;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            padding: 60px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 15px;
            color: #B8C4D6;
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: #B8C4D6;
            padding-top: 48px;
        }

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

        .footer-brand p {
            font-size: 14px;
            margin-top: 12px;
            line-height: 1.6;
            color: #B8C4D6;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-diamond {
            width: 10px;
            height: 10px;
            background: var(--color-gold);
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            display: inline-block;
        }

        .footer-links h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links ul li {
            margin-bottom: 8px;
        }

        .footer-links ul li a {
            color: #B8C4D6;
            font-size: 14px;
            transition: color 0.25s;
        }

        .footer-links ul li a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            background: #070A12;
            padding: 16px 0;
            font-size: 12px;
            color: #5A6B85;
        }

        .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .footer-bottom a {
            color: #5A6B85;
            transition: color 0.25s;
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* Foundation overrides */
        .foundation-custom .button,
        .foundation-custom button {
            font-family: var(--font-family);
            box-shadow: none;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hall-card-img {
                flex: 0 0 160px;
                min-height: 160px;
            }

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

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

        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger-btn {
                display: block;
            }

            .hero-short .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }

            .hero-short-desc {
                font-size: 14px;
            }

            .hall-card {
                flex-direction: column;
            }

            .hall-card-img {
                flex: 0 0 160px;
                min-height: 160px;
                width: 100%;
            }

            .hall-card-body {
                padding: 16px 18px;
            }

            .hall-rank {
                font-size: 24px;
            }

            .hall-card-title {
                font-size: 17px;
            }

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .site-footer {
                padding-top: 32px;
            }

            .cta-section h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .hero-short-title {
                font-size: 24px;
            }

            .hall-card-body {
                padding: 12px 14px;
            }

            .hall-card-title {
                font-size: 16px;
            }

            .hall-card-desc {
                font-size: 13px;
            }

            .hall-card .btn-outline-accent {
                font-size: 12px;
                padding: 6px 14px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-value {
                font-size: 22px;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }

            .footer-bottom-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0A0E1A;
            --color-primary-light: #151D30;
            --color-accent: #00E5FF;
            --color-accent-deep: #00A8C5;
            --color-gold: #F0B429;
            --color-gold-deep: #E09F1F;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F4F7FC;
            --color-text: #1A2233;
            --color-text-sub: #5A6B85;
            --color-border: #E2E8F0;
            --color-shadow: rgba(10, 14, 26, 0.08);
            --color-shadow-hover: rgba(10, 14, 26, 0.14);
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-pill: 20px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1200px;
            --nav-height: 68px;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

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

        button, input, select, textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
            border: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .container-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-title h2 {
            font-size: 28px;
            font-weight: 700;
        }

        .section-title p {
            max-width: 620px;
            margin: 8px auto 0;
            font-size: 15px;
            color: var(--color-text-sub);
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-accent-deep);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-label.dark {
            color: var(--color-accent);
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-align: center;
            line-height: 1.5;
            border: 1px solid transparent;
        }

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

        .btn-gold {
            background: linear-gradient(135deg, var(--color-gold), var(--color-gold-deep));
            color: var(--color-primary) !important;
            border-color: transparent;
        }

        .btn-gold:hover {
            background: linear-gradient(135deg, #F8C64D, var(--color-gold));
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(240, 180, 41, 0.4);
        }

        .btn-outline-accent {
            background: transparent;
            color: var(--color-accent) !important;
            border-color: var(--color-accent);
        }

        .btn-outline-accent:hover {
            background: rgba(0, 229, 255, 0.12);
            transform: translateY(-1px);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
        }

        .btn-outline-white {
            background: transparent;
            color: #FFFFFF !important;
            border-color: rgba(255, 255, 255, 0.4);
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #FFFFFF;
            transform: translateY(-1px);
        }

        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.8px;
            line-height: 1.5;
        }

        .badge-accent {
            background: rgba(0, 229, 255, 0.12);
            color: var(--color-accent-deep);
            border: 1px solid rgba(0, 229, 255, 0.25);
        }

        .badge-accent-dark {
            background: rgba(0, 229, 255, 0.15);
            color: var(--color-accent);
            border: 1px solid rgba(0, 229, 255, 0.3);
        }

        .badge-gold {
            background: rgba(240, 180, 41, 0.12);
            color: var(--color-gold-deep);
            border: 1px solid rgba(240, 180, 41, 0.3);
        }

        .badge-gold-dark {
            background: rgba(240, 180, 41, 0.16);
            color: var(--color-gold);
            border: 1px solid rgba(240, 180, 41, 0.35);
        }

        .card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
            border-color: rgba(0, 229, 255, 0.3);
        }

        /* Header */
        .site-header {
            background: var(--color-primary);
            border-bottom: 1px solid rgba(0, 229, 255, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            padding: 0 20px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            display: inline-block;
            width: 14px;
            height: 14px;
            background: var(--color-gold);
            transform: rotate(45deg);
            border: 1px solid var(--color-accent);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--color-gold);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0 auto;
        }

        .desktop-nav .nav-link {
            font-size: 14px;
            color: #B8C4D6;
            position: relative;
            padding: 4px 0;
            letter-spacing: 0.4px;
            white-space: nowrap;
        }

        .desktop-nav .nav-link:hover {
            color: #FFFFFF;
        }

        .desktop-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            transition: width 0.25s ease;
            box-shadow: 0 1px 8px rgba(0, 229, 255, 0.7);
        }

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

        .desktop-nav .nav-link.active {
            color: #FFFFFF;
        }

        .desktop-nav .nav-link.active::after {
            width: 100%;
            background: var(--color-accent);
            box-shadow: 0 1px 12px rgba(0, 229, 255, 0.8);
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .hamburger-btn {
            display: none;
            font-size: 22px;
            color: #FFFFFF;
            background: transparent;
            border: none;
            padding: 8px;
            line-height: 1;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            background: var(--color-primary);
            border-top: 1px solid rgba(0, 229, 255, 0.2);
            padding: 12px 0;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            z-index: 99;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 12px 20px;
            color: #B8C4D6;
            font-size: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.2s ease;
        }

        .mobile-menu .nav-link:hover,
        .mobile-menu .nav-link.active {
            color: #FFFFFF;
            background: rgba(0, 229, 255, 0.05);
            border-left: 3px solid var(--color-accent);
        }

        /* Breadcrumb */
        .breadcrumb-area {
            background: var(--color-bg-alt);
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
            font-size: 13px;
            color: var(--color-text-sub);
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb li + li::before {
            content: '/';
            color: #B8C4D6;
            font-size: 12px;
        }

        .breadcrumb a {
            color: var(--color-text-sub);
        }

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

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 600;
        }

        /* Light Hero */
        .light-hero {
            background: var(--color-bg-alt);
            padding: 40px 0 48px;
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }

        .light-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.08), transparent 65%);
            pointer-events: none;
        }

        .light-hero-inner {
            display: flex;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .light-hero-left {
            flex: 1;
            min-width: 0;
        }

        .light-hero-left h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-primary);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .light-hero-left .hero-sub {
            font-size: 15px;
            color: var(--color-text-sub);
            max-width: 480px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .light-hero-right {
            flex: 0 0 300px;
            width: 300px;
            max-width: 100%;
        }

        .light-hero-right .hero-badge-card {
            background: var(--color-primary);
            border-radius: var(--radius-card);
            border: 1px solid rgba(0, 229, 255, 0.3);
            box-shadow: 0 8px 28px rgba(10, 14, 26, 0.15);
            padding: 24px 20px;
            text-align: center;
            color: #FFFFFF;
        }

        .hero-badge-card .big-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-gold);
            line-height: 1.2;
        }

        .hero-badge-card .badge-label {
            font-size: 13px;
            color: #B8C4D6;
            margin-top: 4px;
        }

        /* Stats Overview */
        .stats-overview {
            background: var(--color-bg);
            padding: 32px 0;
            border-bottom: 1px solid var(--color-border);
        }

        .stats-row {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .stat-item {
            flex: 1 1 180px;
            min-width: 150px;
            text-align: center;
            padding: 20px 16px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
        }

        .stat-item .stat-number {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }

        .stat-item .stat-number .accent {
            color: var(--color-accent-deep);
        }

        .stat-item .stat-desc {
            font-size: 13px;
            color: var(--color-text-sub);
            margin-top: 4px;
        }

        /* Timeline */
        .timeline-section {
            background: var(--color-bg);
            padding: var(--spacing-section) 0;
        }

        .timeline-section .section-title {
            text-align: left;
            margin-bottom: 48px;
        }

        .timeline-section .section-title h2 {
            color: var(--color-primary);
        }

        .timeline-section .section-title p {
            margin: 8px 0 0;
            text-align: left;
        }

        .timeline {
            position: relative;
            padding-left: 48px;
            max-width: 920px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--color-accent);
            opacity: 0.45;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 20px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -39px;
            top: 28px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 3px solid var(--color-accent);
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.5);
            z-index: 2;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            left: -40px;
            top: 27px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.12);
            z-index: 1;
        }

        .timeline-item.gold-node::before {
            border-color: var(--color-gold);
            box-shadow: 0 0 12px rgba(240, 180, 41, 0.5);
        }

        .timeline-item.gold-node::after {
            background: rgba(240, 180, 41, 0.15);
        }

        .timeline-card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
            padding: 24px 28px;
            display: flex;
            gap: 24px;
            align-items: flex-start;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            position: relative;
            border-left: 3px solid var(--color-accent);
        }

        .timeline-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
            border-left-color: var(--color-gold);
        }

        .timeline-card .timeline-thumb {
            flex: 0 0 130px;
            width: 130px;
            height: 90px;
            border-radius: 6px;
            overflow: hidden;
            border: 1px solid var(--color-border);
        }

        .timeline-card .timeline-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .timeline-card .timeline-content {
            flex: 1;
            min-width: 0;
        }

        .timeline-card .stage-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 1.5px;
            color: var(--color-accent-deep);
            background: rgba(0, 229, 255, 0.08);
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            margin-bottom: 8px;
        }

        .timeline-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 10px;
        }

        .timeline-card .stage-desc {
            font-size: 14px;
            color: var(--color-text-sub);
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .timeline-card .stage-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .timeline-card .stage-list li {
            font-size: 14px;
            color: var(--color-text);
            padding-left: 18px;
            position: relative;
            margin-bottom: 6px;
            line-height: 1.6;
        }

        .timeline-card .stage-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            background: var(--color-accent);
            border-radius: 2px;
            opacity: 0.7;
        }

        /* Benefits */
        .benefits-section {
            background: var(--color-bg-alt);
            padding: var(--spacing-section) 0;
        }

        .benefits-section .section-title h2 {
            color: var(--color-primary);
        }

        .benefits-grid {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .benefit-card {
            flex: 1 1 240px;
            max-width: 360px;
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
            padding: 28px 24px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .benefit-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
            border-color: rgba(0, 229, 255, 0.4);
        }

        .benefit-card .benefit-icon {
            width: 40px;
            height: 40px;
            border: 2px solid var(--color-accent-deep);
            border-radius: 50%;
            margin-bottom: 16px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent-deep);
            font-weight: 700;
            font-size: 16px;
        }

        .benefit-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-primary);
            margin: 0 0 10px;
        }

        .benefit-card p {
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.6;
            margin: 0;
        }

        /* FAQ */
        .faq-section {
            background: var(--color-bg);
            padding: var(--spacing-section) 0;
        }

        .faq-section .section-title h2 {
            color: var(--color-primary);
        }

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-list .accordion {
            border: none;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .faq-list .accordion-item {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            box-shadow: 0 2px 8px rgba(10, 14, 26, 0.04);
            transition: box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .faq-list .accordion-item:hover {
            box-shadow: 0 4px 16px var(--color-shadow);
            border-color: rgba(0, 229, 255, 0.3);
        }

        .faq-list .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            cursor: pointer;
            border: none;
            background: transparent;
            gap: 12px;
            position: relative;
            text-align: left;
            width: 100%;
        }

        .faq-list .accordion-title:hover {
            color: var(--color-accent-deep);
        }

        .faq-list .accordion-title .arrow-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
            transition: transform 0.25s ease;
        }

        .faq-list .accordion-title .arrow-icon::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 10px;
            height: 10px;
            border-right: 2px solid var(--color-accent-deep);
            border-bottom: 2px solid var(--color-accent-deep);
            transform: translate(-50%, -60%) rotate(45deg);
            transition: transform 0.25s ease;
        }

        .faq-list .accordion-item.is-active .arrow-icon {
            transform: rotate(180deg);
        }

        .faq-list .accordion-item.is-active {
            border-left: 3px solid var(--color-accent);
            box-shadow: 0 4px 16px var(--color-shadow);
        }

        .faq-list .accordion-content {
            background: var(--color-bg-alt);
            border-radius: 0 0 var(--radius-card) var(--radius-card);
            padding: 4px 20px 16px;
        }

        .faq-list .accordion-content p {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
            margin: 0;
            padding: 10px 0 4px;
        }

        /* CTA */
        .cta-section {
            background: var(--color-primary);
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 180, 41, 0.12), transparent 60%);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: -60px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.1), transparent 60%);
            pointer-events: none;
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .cta-inner h2 .highlight {
            color: var(--color-gold);
        }

        .cta-inner p {
            font-size: 15px;
            color: #B8C4D6;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

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

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: #B8C4D6;
            padding-top: 48px;
            margin-top: auto;
        }

        .footer-grid {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(0, 229, 255, 0.12);
        }

        .footer-brand {
            flex: 1 1 300px;
            max-width: 360px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .logo-diamond {
            display: inline-block;
            width: 12px;
            height: 12px;
            background: var(--color-gold);
            transform: rotate(45deg);
            border: 1px solid var(--color-accent);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #8A9BB8;
            margin: 0;
        }

        .footer-links {
            flex: 1 1 160px;
            min-width: 140px;
        }

        .footer-links h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 14px;
            letter-spacing: 0.5px;
        }

        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links ul li {
            margin-bottom: 8px;
        }

        .footer-links ul li a {
            font-size: 13px;
            color: #8A9BB8;
            transition: color 0.2s ease;
        }

        .footer-links ul li a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            background: #070A12;
            padding: 16px 0;
            border-top: 1px solid rgba(0, 229, 255, 0.08);
        }

        .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #5A6B85;
        }

        .footer-bottom-inner a {
            color: #5A6B85;
            transition: color 0.2s ease;
        }

        .footer-bottom-inner a:hover {
            color: var(--color-accent);
        }

        @media (max-width: 1024px) {
            :root {
                --spacing-section: 64px;
            }

            .desktop-nav {
                gap: 17px;
            }

            .desktop-nav .nav-link {
                font-size: 13px;
            }

            .light-hero-inner {
                gap: 24px;
            }

            .light-hero-left h1 {
                font-size: 26px;
            }

            .timeline {
                padding-left: 36px;
            }

            .timeline::before {
                left: 12px;
            }

            .timeline-item::before {
                left: -30px;
                width: 12px;
                height: 12px;
            }

            .timeline-item::after {
                left: -31px;
                width: 14px;
                height: 14px;
            }

            .timeline-card .timeline-thumb {
                flex: 0 0 100px;
                width: 100px;
                height: 75px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
                --nav-height: 60px;
            }

            .desktop-nav {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger-btn {
                display: block;
            }

            .mobile-menu {
                display: none;
            }

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

            .light-hero {
                padding: 28px 0 32px;
            }

            .light-hero-inner {
                flex-direction: column;
                gap: 18px;
                text-align: center;
            }

            .light-hero-left h1 {
                font-size: 22px;
                text-align: center;
            }

            .light-hero-left .hero-sub {
                text-align: center;
                margin-left: auto;
                margin-right: auto;
            }

            .light-hero-right {
                flex: 0 0 auto;
                width: 220px;
                max-width: 100%;
                margin: 0 auto;
            }

            .hero-badge-card .big-number {
                font-size: 28px;
            }

            .stats-row {
                gap: 12px;
            }

            .stat-item {
                flex: 1 1 140px;
                min-width: 120px;
                padding: 14px 10px;
            }

            .stat-item .stat-number {
                font-size: 22px;
            }

            .timeline {
                padding-left: 28px;
            }

            .timeline::before {
                left: 9px;
            }

            .timeline-item {
                padding-left: 10px;
                margin-bottom: 24px;
            }

            .timeline-item::before {
                left: -24px;
                top: 20px;
                width: 10px;
                height: 10px;
                border-width: 2px;
            }

            .timeline-item::after {
                left: -25px;
                top: 19px;
                width: 12px;
                height: 12px;
            }

            .timeline-card {
                flex-direction: column;
                gap: 14px;
                padding: 18px 16px;
            }

            .timeline-card .timeline-thumb {
                flex: 0 0 auto;
                width: 100%;
                height: 140px;
                border-radius: 6px;
            }

            .timeline-card h3 {
                font-size: 17px;
            }

            .timeline-card .stage-list li {
                font-size: 13px;
            }

            .benefits-grid {
                gap: 16px;
            }

            .benefit-card {
                flex: 1 1 100%;
                max-width: 100%;
                padding: 20px 18px;
            }

            .cta-inner h2 {
                font-size: 22px;
            }

            .cta-inner p {
                font-size: 14px;
            }

            .cta-inner .btn-group {
                flex-direction: column;
                gap: 10px;
                align-items: center;
            }

            .footer-grid {
                flex-direction: column;
                gap: 24px;
            }

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

            .footer-bottom-inner {
                flex-direction: column;
                gap: 6px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .light-hero-left h1 {
                font-size: 19px;
                letter-spacing: 0.3px;
            }

            .light-hero-left .hero-sub {
                font-size: 13px;
            }

            .section-title h2 {
                font-size: 22px;
            }

            .timeline-card {
                padding: 14px 12px;
            }

            .timeline-card h3 {
                font-size: 16px;
            }

            .stat-item .stat-number {
                font-size: 19px;
            }

            .stat-item .stat-desc {
                font-size: 11px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #0A0E1A;
            --color-primary-light: #151D30;
            --color-accent: #00E5FF;
            --color-accent-deep: #00A8C5;
            --color-gold: #F0B429;
            --color-gold-deep: #E09F1F;
            --color-silver: #C0C4CC;
            --color-bronze: #CD7F32;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F4F7FC;
            --color-text: #1A2233;
            --color-text-sub: #5A6B85;
            --color-border: #E2E8F0;
            --color-shadow: rgba(10, 14, 26, 0.08);
            --color-shadow-hover: rgba(10, 14, 26, 0.14);
            --color-dark-bg: #0D1220;
            --color-dark-card: #151D30;
            --color-dark-border: #223150;
            --color-dark-text: #E8EDF5;
            --color-dark-sub: #8E9BB5;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-pill: 20px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --container-max: 1200px;
            --nav-height: 68px;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-dark-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }
        a:hover {
            text-decoration: none;
            color: inherit;
        }
        button, input, select, textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--color-primary);
            border-bottom: 1px solid rgba(0, 229, 255, 0.25);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 18px;
            height: 18px;
            background: linear-gradient(135deg, var(--color-gold), var(--color-accent));
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            display: inline-block;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--color-gold);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0 24px;
        }
        .desktop-nav .nav-link {
            font-size: 14px;
            color: #B8C4D6;
            position: relative;
            padding: 6px 0;
            letter-spacing: 0.3px;
            transition: color 0.25s ease;
        }
        .desktop-nav .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            box-shadow: 0 1px 12px rgba(0, 229, 255, 0.8);
            transition: width 0.25s ease;
        }
        .desktop-nav .nav-link:hover {
            color: #FFFFFF;
        }
        .desktop-nav .nav-link:hover::after {
            width: 100%;
        }
        .desktop-nav .nav-link.active {
            color: #FFFFFF;
            font-weight: 600;
        }
        .desktop-nav .nav-link.active::after {
            width: 100%;
            box-shadow: 0 1px 12px rgba(0, 229, 255, 0.8);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }
        .hamburger-btn {
            display: none;
            color: #FFFFFF;
            font-size: 24px;
            padding: 4px 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 4px;
            line-height: 1;
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--color-primary);
            flex-direction: column;
            padding: 16px 20px;
            gap: 0;
            border-bottom: 1px solid rgba(0, 229, 255, 0.25);
            z-index: 99;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 14px 0;
            font-size: 15px;
            color: #B8C4D6;
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: color 0.25s ease;
        }
        .mobile-menu .nav-link::after {
            content: '›';
            color: var(--color-accent);
            font-size: 20px;
        }
        .mobile-menu .nav-link:hover,
        .mobile-menu .nav-link.active {
            color: #FFFFFF;
        }
        .mobile-menu .nav-link.active {
            color: var(--color-accent);
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-align: center;
            line-height: 1.5;
            border: 1px solid transparent;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--color-gold), var(--color-gold-deep));
            color: var(--color-primary) !important;
            border-color: transparent;
        }
        .btn-gold:hover {
            background: linear-gradient(135deg, #F8C64D, var(--color-gold));
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(240, 180, 41, 0.4);
        }
        .btn-outline-accent {
            background: transparent;
            color: var(--color-accent) !important;
            border-color: var(--color-accent);
        }
        .btn-outline-accent:hover {
            background: rgba(0, 229, 255, 0.12);
            transform: translateY(-1px);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
        }
        .btn-outline-white {
            background: transparent;
            color: #FFFFFF !important;
            border-color: rgba(255, 255, 255, 0.4);
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #FFFFFF;
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }

        /* ========== 徽章 ========== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.8px;
            line-height: 1.5;
        }
        .badge-accent-dark {
            background: rgba(0, 229, 255, 0.15);
            color: var(--color-accent);
            border: 1px solid rgba(0, 229, 255, 0.3);
        }
        .badge-gold-dark {
            background: rgba(240, 180, 41, 0.16);
            color: var(--color-gold);
            border: 1px solid rgba(240, 180, 41, 0.35);
        }
        .badge-silver-dark {
            background: rgba(192, 196, 204, 0.12);
            color: var(--color-silver);
            border: 1px solid rgba(192, 196, 204, 0.3);
        }
        .badge-bronze-dark {
            background: rgba(205, 127, 50, 0.14);
            color: #E8A36B;
            border: 1px solid rgba(205, 127, 50, 0.35);
        }
        .badge-rank-normal {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-dark-sub);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        /* ========== Hero ========== */
        .rank-hero {
            position: relative;
            padding: 60px 0 40px;
            background: var(--color-dark-bg);
            overflow: hidden;
        }
        .rank-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle at center, rgba(0, 229, 255, 0.08), transparent 70%);
            pointer-events: none;
        }
        .rank-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle at center, rgba(240, 180, 41, 0.06), transparent 70%);
            pointer-events: none;
        }
        .rank-hero-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            position: relative;
            z-index: 1;
        }
        .rank-hero-left {
            flex: 1 1 55%;
            min-width: 280px;
        }
        .rank-hero-left .section-label {
            color: var(--color-accent);
        }
        .rank-hero-left h1 {
            font-size: 36px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            letter-spacing: 0.5px;
            margin: 8px 0 12px;
        }
        .rank-hero-left h1 .gold-text {
            color: var(--color-gold);
        }
        .rank-hero-left p {
            font-size: 15px;
            color: var(--color-dark-sub);
            max-width: 560px;
            margin: 0;
        }
        .rank-hero-right {
            flex: 0 0 auto;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 8px;
        }
        .rank-hero-right .stat-big {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-gold);
            line-height: 1;
        }
        .rank-hero-right .stat-label {
            font-size: 13px;
            color: var(--color-dark-sub);
            letter-spacing: 1px;
        }

        /* ========== 榜单主体 ========== */
        .rank-board-section {
            background: var(--color-dark-bg);
            padding-bottom: var(--spacing-section);
        }
        .rank-board-wrapper {
            max-width: 900px;
            margin: 0 auto;
        }
        .rank-board-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            background: var(--color-dark-card);
            border: 1px solid var(--color-dark-border);
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            flex-wrap: wrap;
            gap: 8px;
        }
        .rank-board-header .board-title {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }
        .rank-board-header .board-update {
            font-size: 12px;
            color: var(--color-dark-sub);
        }
        .rank-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--color-dark-card);
            border: 1px solid var(--color-dark-border);
            border-top: none;
            transition: all 0.25s ease;
            flex-wrap: wrap;
        }
        .rank-row:last-child {
            border-radius: 0 0 var(--radius-card) var(--radius-card);
        }
        .rank-row:hover {
            background: #182038;
            border-color: rgba(0, 229, 255, 0.25);
        }
        .rank-row.top1 {
            border-left: 3px solid var(--color-gold);
            box-shadow: inset 0 0 24px rgba(240, 180, 41, 0.06);
        }
        .rank-row.top2 {
            border-left: 3px solid var(--color-silver);
            box-shadow: inset 0 0 20px rgba(192, 196, 204, 0.05);
        }
        .rank-row.top3 {
            border-left: 3px solid var(--color-bronze);
            box-shadow: inset 0 0 18px rgba(205, 127, 50, 0.05);
        }
        .rank-number {
            flex: 0 0 48px;
            text-align: center;
            font-size: 24px;
            font-weight: 700;
            color: var(--color-dark-sub);
            letter-spacing: 0;
            line-height: 1;
        }
        .rank-row.top1 .rank-number {
            color: var(--color-gold);
            font-size: 28px;
        }
        .rank-row.top2 .rank-number {
            color: var(--color-silver);
            font-size: 26px;
        }
        .rank-row.top3 .rank-number {
            color: #E8A36B;
            font-size: 26px;
        }
        .rank-avatar {
            flex: 0 0 48px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            overflow: hidden;
            border: 2px solid var(--color-dark-border);
            flex-shrink: 0;
        }
        .rank-row.top1 .rank-avatar {
            border-color: var(--color-gold);
            box-shadow: 0 0 12px rgba(240, 180, 41, 0.35);
        }
        .rank-row.top2 .rank-avatar {
            border-color: var(--color-silver);
            box-shadow: 0 0 10px rgba(192, 196, 204, 0.3);
        }
        .rank-row.top3 .rank-avatar {
            border-color: var(--color-bronze);
            box-shadow: 0 0 10px rgba(205, 127, 50, 0.3);
        }
        .rank-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .rank-info {
            flex: 1 1 160px;
            min-width: 120px;
        }
        .rank-info .rank-name {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 2px;
        }
        .rank-info .rank-tag {
            font-size: 12px;
            color: var(--color-dark-sub);
        }
        .rank-reward {
            flex: 0 0 auto;
            text-align: right;
            min-width: 110px;
        }
        .rank-reward .reward-amount {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-gold);
            line-height: 1;
        }
        .rank-reward .reward-label {
            font-size: 12px;
            color: var(--color-dark-sub);
            margin-top: 4px;
        }

        /* ========== 数据统计 ========== */
        .stats-bar-section {
            background: var(--color-dark-card);
            border-top: 1px solid var(--color-dark-border);
            border-bottom: 1px solid var(--color-dark-border);
            padding: 28px 0;
        }
        .stats-bar-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            padding: 8px 12px;
        }
        .stat-item .stat-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 13px;
            color: var(--color-dark-sub);
            margin-top: 4px;
        }

        /* ========== 榜单规则 ========== */
        .rules-section {
            background: var(--color-dark-bg);
        }
        .rules-section .section-title h2 {
            color: #FFFFFF;
        }
        .rules-section .section-title p {
            color: var(--color-dark-sub);
        }
        .rules-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }
        .rule-card {
            background: var(--color-dark-card);
            border: 1px solid var(--color-dark-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            transition: all 0.25s ease;
        }
        .rule-card:hover {
            border-color: rgba(0, 229, 255, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        }
        .rule-card .rule-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .rule-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 8px;
        }
        .rule-card p {
            font-size: 14px;
            color: var(--color-dark-sub);
            margin: 0;
            line-height: 1.7;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--color-dark-bg);
            padding-bottom: var(--spacing-section);
        }
        .faq-section .section-title h2 {
            color: #FFFFFF;
        }
        .faq-section .section-title p {
            color: var(--color-dark-sub);
        }
        .faq-accordion-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-dark-card);
            border: 1px solid var(--color-dark-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease;
        }
        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            gap: 16px;
            user-select: none;
        }
        .faq-question .faq-q-text {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            flex: 1;
        }
        .faq-question .faq-arrow {
            flex: 0 0 auto;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            transition: transform 0.25s ease;
            font-size: 14px;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 240px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-dark-sub);
            line-height: 1.8;
            margin: 0;
            padding: 14px;
            background: rgba(255, 255, 255, 0.03);
            border-left: 2px solid var(--color-accent);
            border-radius: 0 4px 4px 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #0D1220 0%, #151D30 60%, #0F1B2E 100%);
            border-top: 1px solid rgba(0, 229, 255, 0.2);
            border-bottom: 1px solid rgba(0, 229, 255, 0.2);
            padding: 48px 0;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-inner .cta-text h2 {
            font-size: 24px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 6px;
        }
        .cta-inner .cta-text p {
            font-size: 14px;
            color: var(--color-dark-sub);
            margin: 0;
        }
        .cta-inner .btn {
            flex-shrink: 0;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-primary);
            padding: 48px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo .logo-diamond {
            width: 14px;
            height: 14px;
            background: linear-gradient(135deg, var(--color-gold), var(--color-accent));
            clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
            display: inline-block;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--color-dark-sub);
            line-height: 1.7;
            margin: 0;
            max-width: 340px;
        }
        .footer-links h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links ul li {
            margin-bottom: 10px;
        }
        .footer-links ul li a {
            font-size: 13px;
            color: var(--color-dark-sub);
            transition: color 0.25s ease;
        }
        .footer-links ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            background: #070A12;
            padding: 16px 0;
        }
        .footer-bottom-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 8px 16px;
            font-size: 12px;
            color: #5A6B85;
        }
        .footer-bottom-inner a {
            color: #5A6B85;
            transition: color 0.25s ease;
        }
        .footer-bottom-inner a:hover {
            color: var(--color-accent);
        }

        /* ========== 响应式 ========== */
        @media screen and (max-width: 1024px) {
            .desktop-nav {
                gap: 18px;
                margin: 0 12px;
            }
            .desktop-nav .nav-link {
                font-size: 13px;
            }
            .rank-hero-left h1 {
                font-size: 30px;
            }
        }
        @media screen and (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: flex;
            }
            .rank-hero {
                padding: 36px 0 24px;
            }
            .rank-hero-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .rank-hero-left h1 {
                font-size: 26px;
            }
            .rank-hero-right {
                align-items: flex-start;
            }
            .rank-row {
                gap: 10px;
                padding: 12px 14px;
            }
            .rank-number {
                flex: 0 0 32px;
                font-size: 18px;
            }
            .rank-row.top1 .rank-number,
            .rank-row.top2 .rank-number,
            .rank-row.top3 .rank-number {
                font-size: 20px;
            }
            .rank-avatar {
                flex: 0 0 36px;
                width: 36px;
                height: 36px;
            }
            .rank-info .rank-name {
                font-size: 14px;
            }
            .rank-reward .reward-amount {
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
            .rank-board-section {
                padding-top: 24px;
                padding-bottom: var(--spacing-section-mobile);
            }
            .faq-section {
                padding-bottom: var(--spacing-section-mobile);
            }
        }
        @media screen and (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .nav-inner {
                padding: 0 14px;
            }
            .logo-text {
                font-size: 17px;
            }
            .rank-hero-left h1 {
                font-size: 22px;
            }
            .rank-board-header {
                padding: 10px 14px;
                flex-direction: column;
                align-items: flex-start;
            }
            .rank-row {
                padding: 10px 12px;
                gap: 8px;
            }
            .rank-number {
                flex: 0 0 28px;
                font-size: 16px;
            }
            .rank-reward {
                min-width: 80px;
            }
            .stats-bar-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item .stat-value {
                font-size: 22px;
            }
            .footer-bottom-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #0A0E1A;
            --color-primary-light: #151D30;
            --color-accent: #00E5FF;
            --color-accent-deep: #00A8C5;
            --color-gold: #F0B429;
            --color-gold-deep: #E09F1F;
            --color-bg: #FFFFFF;
            --color-bg-alt: #F4F7FC;
            --color-text: #1A2233;
            --color-text-sub: #5A6B85;
            --color-border: #E2E8F0;
            --color-shadow: rgba(10, 14, 26, 0.08);
            --color-shadow-hover: rgba(10, 14, 26, 0.14);
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-pill: 20px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacing-section: 64px;
            --spacing-section-mobile: 48px;
            --container-max: 1200px;
            --nav-height: 68px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }
        a:hover {
            text-decoration: none;
            color: inherit;
        }
        button, input, select, textarea {
            font-family: var(--font-family);
            font-size: 16px;
            outline: none;
            border: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-title h2 {
            font-size: 28px;
            font-weight: 700;
        }
        .section-title p {
            max-width: 620px;
            margin: 8px auto 0;
            font-size: 15px;
            color: var(--color-text-sub);
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-accent-deep);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-label.dark {
            color: var(--color-accent);
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-align: center;
            line-height: 1.5;
            border: 1px solid transparent;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--color-gold), var(--color-gold-deep));
            color: var(--color-primary) !important;
            border-color: transparent;
        }
        .btn-gold:hover {
            background: linear-gradient(135deg, #F8C64D, var(--color-gold));
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(240, 180, 41, 0.4);
        }
        .btn-outline-accent {
            background: transparent;
            color: var(--color-accent-deep) !important;
            border-color: var(--color-accent-deep);
        }
        .btn-outline-accent:hover {
            background: rgba(0, 229, 255, 0.12);
            transform: translateY(-1px);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
        }
        .btn-outline-white {
            background: transparent;
            color: #FFFFFF !important;
            border-color: rgba(255, 255, 255, 0.4);
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #FFFFFF;
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.8px;
            line-height: 1.5;
        }
        .badge-accent {
            background: rgba(0, 229, 255, 0.12);
            color: var(--color-accent-deep);
            border: 1px solid rgba(0, 229, 255, 0.25);
        }
        .badge-gold {
            background: rgba(240, 180, 41, 0.12);
            color: var(--color-gold-deep);
            border: 1px solid rgba(240, 180, 41, 0.3);
        }
        .badge-dark {
            background: rgba(10, 14, 26, 0.08);
            color: var(--color-text-sub);
            border: 1px solid var(--color-border);
        }
        .card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
            border-color: rgba(0, 229, 255, 0.3);
        }
        .site-header {
            background: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            border-bottom: 1px solid rgba(0, 229, 255, 0.15);
            display: flex;
            align-items: center;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 12px;
            height: 12px;
            background: var(--color-accent);
            transform: rotate(45deg);
            display: inline-block;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.7);
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            line-height: 1;
        }
        .logo-text span {
            color: var(--color-gold);
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            font-size: 14px;
            color: #B8C4D6;
            padding: 4px 0;
            position: relative;
            letter-spacing: 0.5px;
            transition: color 0.25s ease;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link.active {
            color: #fff;
            box-shadow: 0 1px 12px rgba(0, 229, 255, 0.8);
            border-bottom: 2px solid var(--color-accent);
            padding-bottom: 6px;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .hamburger-btn {
            display: none;
            color: #fff;
            font-size: 24px;
            padding: 4px 8px;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            line-height: 1;
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--color-primary);
            padding: 16px 20px;
            flex-direction: column;
            border-bottom: 1px solid rgba(0, 229, 255, 0.2);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            color: #B8C4D6;
        }
        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }
        .mobile-menu .nav-link.active {
            color: #fff;
            border-bottom: 1px solid rgba(0, 229, 255, 0.3);
        }
        .breadcrumb-bar {
            background: var(--color-bg-alt);
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--color-text-sub);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-sub);
        }
        .breadcrumb a:hover {
            color: var(--color-accent-deep);
        }
        .breadcrumb .separator {
            color: #B0B8C8;
        }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }
        .guide-hero {
            background: var(--color-bg-alt);
            padding: 60px 0 48px;
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }
        .guide-hero::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0,229,255,0.06), transparent 70%);
            pointer-events: none;
        }
        .guide-hero-inner {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            position: relative;
            z-index: 1;
        }
        .guide-hero h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 12px;
        }
        .guide-hero h1 .highlight {
            color: var(--color-accent-deep);
        }
        .guide-hero .hero-desc {
            font-size: 16px;
            color: var(--color-text-sub);
            max-width: 720px;
            line-height: 1.8;
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
            border-color: rgba(0, 229, 255, 0.35);
        }
        .guide-card-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-primary-light);
        }
        .guide-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .guide-card:hover .guide-card-image img {
            transform: scale(1.04);
        }
        .guide-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .guide-card-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .guide-card-excerpt {
            font-size: 15px;
            color: var(--color-text-sub);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .guide-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent-deep);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-bottom: 1px solid transparent;
            padding-bottom: 2px;
            transition: all 0.25s ease;
            align-self: flex-start;
        }
        .guide-card-link:hover {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
        }
        .tactics-section {
            background: var(--color-primary);
            padding: 64px 0;
        }
        .tactics-section .section-title h2 {
            color: #E8EDF5;
        }
        .tactics-section .section-title p {
            color: #8FA0B8;
        }
        .tactic-stack {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }
        .tactic-card {
            background: var(--color-primary-light);
            border: 1px solid #223150;
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.08);
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
        .tactic-card:hover {
            transform: translateY(-3px);
            border-color: rgba(0, 229, 255, 0.35);
        }
        .tactic-icon {
            width: 44px;
            height: 44px;
            border: 1px solid rgba(0, 229, 255, 0.5);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            color: var(--color-accent);
            font-size: 20px;
        }
        .tactic-card h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .tactic-card p {
            color: #8FA0B8;
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }
        .facts-section {
            background: var(--color-bg);
        }
        .facts-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .fact-item {
            text-align: center;
            padding: 28px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            background: var(--color-bg);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .fact-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px var(--color-shadow-hover);
        }
        .fact-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-accent-deep);
            margin-bottom: 6px;
        }
        .fact-label {
            font-size: 14px;
            color: var(--color-text-sub);
            font-weight: 500;
        }
        .faq-section {
            background: var(--color-bg-alt);
        }
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(10, 14, 26, 0.04);
            transition: border-color 0.3s ease;
        }
        .faq-item.active {
            border-color: rgba(0, 229, 255, 0.4);
        }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 16px;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: background-color 0.25s ease;
            background: #fff;
            border: none;
            width: 100%;
            text-align: left;
            letter-spacing: 0.3px;
        }
        .faq-question:hover {
            background: #FAFBFD;
        }
        .faq-question .faq-arrow {
            font-size: 14px;
            color: var(--color-accent-deep);
            transition: transform 0.25s ease;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 22px;
            background: var(--color-bg-alt);
            font-size: 14px;
            color: var(--color-text-sub);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 16px 22px;
        }
        .cta-band {
            background: var(--color-primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 70% 20%, rgba(240, 180, 41, 0.08), transparent 55%);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cta-text h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-text p {
            color: #8FA0B8;
            font-size: 15px;
            margin: 0;
        }
        .site-footer {
            background: var(--color-primary);
            padding: 56px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .footer-logo .logo-diamond {
            width: 10px;
            height: 10px;
            background: var(--color-accent);
            transform: rotate(45deg);
            display: inline-block;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
        }
        .footer-brand p {
            color: #8FA0B8;
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-links h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links ul li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #8FA0B8;
            font-size: 14px;
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            background: #070A12;
            padding: 16px 0;
        }
        .footer-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: #5A6B85;
        }
        .footer-bottom-inner a {
            color: #5A6B85;
        }
        .footer-bottom-inner a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                gap: 18px;
            }
            .facts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
            .desktop-nav, .nav-cta {
                display: none;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .tactic-stack {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .guide-hero h1 {
                font-size: 28px;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .section {
                padding: var(--spacing-section-mobile) 0;
            }
        }
        @media (max-width: 520px) {
            .facts-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .fact-number {
                font-size: 26px;
            }
            .logo-text {
                font-size: 18px;
            }
            .breadcrumb {
                font-size: 12px;
            }
        }

/* roulang page: category5 */
:root {
        --color-primary: #0A0E1A;
        --color-primary-light: #151D30;
        --color-accent: #00E5FF;
        --color-accent-deep: #00A8C5;
        --color-gold: #F0B429;
        --color-gold-deep: #E09F1F;
        --color-bg: #FFFFFF;
        --color-bg-alt: #F4F7FC;
        --color-text: #1A2233;
        --color-text-sub: #5A6B85;
        --color-border: #E2E8F0;
        --color-shadow: rgba(10, 14, 26, 0.08);
        --color-shadow-hover: rgba(10, 14, 26, 0.14);
        --radius-card: 8px;
        --radius-btn: 4px;
        --radius-pill: 20px;
        --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        --spacing-section: 80px;
        --spacing-section-mobile: 48px;
        --container-max: 1200px;
        --nav-height: 68px;
    }

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

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

    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.7;
        color: var(--color-text);
        background-color: var(--color-bg);
        min-height: 100vh;
        display: flex;
        flex-direction: column;
    }

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

    a {
        color: inherit;
        text-decoration: none;
        transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
    }

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

    button, input, select, textarea {
        font-family: var(--font-family);
        font-size: 16px;
        outline: none;
        border: none;
    }

    button {
        cursor: pointer;
        background: none;
    }

    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 20px;
    }

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

    .section-title {
        text-align: center;
        margin-bottom: 40px;
    }

    .section-title h2 {
        font-size: 28px;
        font-weight: 700;
        line-height: 1.35;
    }

    .section-title p {
        max-width: 620px;
        margin: 8px auto 0;
        font-size: 15px;
        color: var(--color-text-sub);
    }

    .section-label {
        display: inline-block;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 2px;
        color: var(--color-accent-deep);
        text-transform: uppercase;
        margin-bottom: 8px;
    }

    .section-label.dark {
        color: var(--color-accent);
    }

    .btn {
        display: inline-block;
        padding: 12px 28px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 15px;
        letter-spacing: 0.5px;
        transition: all 0.3s ease;
        cursor: pointer;
        text-align: center;
        line-height: 1.5;
        border: 1px solid transparent;
    }

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

    .btn-gold {
        background: linear-gradient(135deg, var(--color-gold), var(--color-gold-deep));
        color: var(--color-primary) !important;
        border-color: transparent;
    }

    .btn-gold:hover {
        background: linear-gradient(135deg, #F8C64D, var(--color-gold));
        transform: translateY(-1px);
        box-shadow: 0 4px 18px rgba(240, 180, 41, 0.4);
    }

    .btn-outline-accent {
        background: transparent;
        color: var(--color-accent) !important;
        border-color: var(--color-accent);
    }

    .btn-outline-accent:hover {
        background: rgba(0, 229, 255, 0.12);
        transform: translateY(-1px);
        box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
    }

    .btn-outline-white {
        background: transparent;
        color: #FFFFFF !important;
        border-color: rgba(255, 255, 255, 0.4);
    }

    .btn-outline-white:hover {
        background: rgba(255, 255, 255, 0.08);
        border-color: #FFFFFF;
        transform: translateY(-1px);
    }

    .btn-lg {
        padding: 14px 34px;
        font-size: 16px;
    }

    .btn-sm {
        padding: 8px 18px;
        font-size: 13px;
    }

    .badge {
        display: inline-block;
        padding: 4px 12px;
        border-radius: var(--radius-pill);
        font-size: 12px;
        font-weight: 500;
        letter-spacing: 0.8px;
        line-height: 1.5;
    }

    .badge-accent {
        background: rgba(0, 229, 255, 0.12);
        color: var(--color-accent-deep);
        border: 1px solid rgba(0, 229, 255, 0.25);
    }

    .badge-accent-dark {
        background: rgba(0, 229, 255, 0.15);
        color: var(--color-accent);
        border: 1px solid rgba(0, 229, 255, 0.3);
    }

    .badge-gold {
        background: rgba(240, 180, 41, 0.12);
        color: var(--color-gold-deep);
        border: 1px solid rgba(240, 180, 41, 0.3);
    }

    .badge-gold-dark {
        background: rgba(240, 180, 41, 0.16);
        color: var(--color-gold);
        border: 1px solid rgba(240, 180, 41, 0.35);
    }

    .card {
        background: var(--color-bg);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border);
        box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
        transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }

    .card:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 24px var(--color-shadow-hover), 0 2px 6px rgba(10, 14, 26, 0.06);
    }

    .card-dark {
        background: var(--color-primary-light);
        border-color: #223150;
        box-shadow: 0 0 20px rgba(0, 229, 255, 0.08);
    }

    /* Header / Navigation */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: var(--color-primary);
        border-bottom: 1px solid rgba(0, 229, 255, 0.3);
        height: var(--nav-height);
        display: flex;
        align-items: center;
    }

    .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        gap: 24px;
    }

    .logo-area {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }

    .logo-icon {
        display: inline-block;
        width: 12px;
        height: 12px;
        background: var(--color-gold);
        transform: rotate(45deg);
        box-shadow: 0 0 8px rgba(240, 180, 41, 0.6);
        flex-shrink: 0;
    }

    .logo-text {
        font-size: 18px;
        font-weight: 700;
        color: #FFFFFF;
        letter-spacing: 1px;
        white-space: nowrap;
    }

    .logo-text span {
        color: var(--color-gold);
    }

    .desktop-nav {
        display: flex;
        align-items: center;
        gap: 28px;
        flex-wrap: nowrap;
        margin: 0 auto;
    }

    .desktop-nav .nav-link {
        font-size: 14px;
        color: #B8C4D6;
        padding: 6px 0;
        position: relative;
        letter-spacing: 0.5px;
        white-space: nowrap;
    }

    .desktop-nav .nav-link:hover {
        color: #FFFFFF;
    }

    .desktop-nav .nav-link::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: 0;
        width: 100%;
        height: 2px;
        background: var(--color-accent);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform 0.3s ease;
        box-shadow: 0 1px 8px rgba(0, 229, 255, 0.6);
    }

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

    .desktop-nav .nav-link.active {
        color: #FFFFFF;
    }

    .desktop-nav .nav-link.active::after {
        transform: scaleX(1);
        box-shadow: 0 1px 12px rgba(0, 229, 255, 0.8);
    }

    .nav-cta {
        flex-shrink: 0;
    }

    .hamburger-btn {
        display: none;
        font-size: 26px;
        color: #FFFFFF;
        line-height: 1;
        padding: 4px 8px;
        border-radius: 4px;
        transition: background-color 0.3s ease;
    }

    .hamburger-btn:hover {
        background: rgba(0, 229, 255, 0.1);
    }

    .mobile-menu {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: #0D1220;
        border-bottom: 1px solid rgba(0, 229, 255, 0.3);
        padding: 16px 20px;
        flex-direction: column;
        gap: 4px;
        z-index: 999;
    }

    .mobile-menu .nav-link {
        display: block;
        padding: 12px 16px;
        color: #B8C4D6;
        font-size: 15px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        transition: all 0.3s ease;
    }

    .mobile-menu .nav-link:hover,
    .mobile-menu .nav-link.active {
        color: #FFFFFF;
        background: rgba(0, 229, 255, 0.08);
    }

    .mobile-menu .nav-link.active {
        border-left: 3px solid var(--color-accent);
    }

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

    /* Hero - Alliance specific */
    .hero-alliance {
        position: relative;
        background: var(--color-primary);
        padding: 100px 0 90px;
        overflow: hidden;
        min-height: 420px;
        display: flex;
        align-items: center;
    }

    .hero-alliance::before {
        content: '';
        position: absolute;
        top: -40%;
        right: -10%;
        width: 60%;
        height: 180%;
        background: linear-gradient(135deg, rgba(0, 229, 255, 0.08) 0%, rgba(0, 168, 197, 0.03) 40%, transparent 70%);
        transform: skewX(-12deg);
        pointer-events: none;
    }

    .hero-alliance::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, var(--color-gold), var(--color-accent), var(--color-gold));
        opacity: 0.7;
    }

    .hero-alliance .radial-glow {
        position: absolute;
        top: 10%;
        right: 15%;
        width: 400px;
        height: 300px;
        background: radial-gradient(circle, rgba(0, 229, 255, 0.1) 0%, transparent 60%);
        pointer-events: none;
    }

    .hero-alliance-content {
        position: relative;
        z-index: 2;
        max-width: 680px;
    }

    .hero-alliance-content .hero-label {
        display: inline-block;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 3px;
        color: var(--color-accent);
        margin-bottom: 16px;
    }

    .hero-alliance-content h1 {
        font-size: 40px;
        font-weight: 700;
        line-height: 1.3;
        color: #FFFFFF;
        letter-spacing: 0.5px;
        margin-bottom: 20px;
    }

    .hero-alliance-content h1 .highlight-gold {
        color: var(--color-gold);
    }

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

    .hero-alliance-content p {
        font-size: 16px;
        line-height: 1.7;
        color: #B8C4D6;
        max-width: 560px;
        margin-bottom: 32px;
    }

    .hero-alliance-actions {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }

    .hero-alliance-stats {
        display: flex;
        gap: 40px;
        margin-top: 40px;
        flex-wrap: wrap;
    }

    .hero-stat-item {
        text-align: left;
    }

    .hero-stat-item .stat-num {
        font-size: 28px;
        font-weight: 700;
        color: var(--color-gold);
        line-height: 1.2;
        display: block;
    }

    .hero-stat-item .stat-label {
        font-size: 13px;
        color: #B8C4D6;
        letter-spacing: 1px;
    }

    /* Steps Section */
    .steps-section {
        background: var(--color-bg);
    }

    .steps-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-top: 40px;
    }

    .step-card {
        background: var(--color-bg);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border);
        box-shadow: 0 4px 16px var(--color-shadow), 0 1px 3px rgba(10, 14, 26, 0.04);
        padding: 32px 24px;
        position: relative;
        transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        overflow: hidden;
    }

    .step-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .step-card:hover::before {
        opacity: 1;
    }

    .step-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 24px var(--color-shadow-hover);
        border-color: rgba(0, 229, 255, 0.3);
    }

    .step-number {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        border-radius: 50%;
        background: var(--color-primary);
        color: var(--color-accent);
        font-size: 20px;
        font-weight: 700;
        margin-bottom: 16px;
        box-shadow: 0 0 16px rgba(0, 229, 255, 0.2);
    }

    .step-card h3 {
        font-size: 19px;
        font-weight: 600;
        margin-bottom: 12px;
        color: var(--color-text);
    }

    .step-card p {
        font-size: 14px;
        color: var(--color-text-sub);
        line-height: 1.7;
        margin-bottom: 16px;
    }

    .step-card ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .step-card ul li {
        font-size: 13px;
        color: var(--color-text-sub);
        padding-left: 18px;
        position: relative;
        margin-bottom: 8px;
        line-height: 1.6;
    }

    .step-card ul li::before {
        content: '';
        position: absolute;
        left: 0;
        top: 6px;
        width: 8px;
        height: 8px;
        background: var(--color-accent);
        transform: rotate(45deg);
        opacity: 0.7;
    }

    /* Benefits Strip */
    .benefits-strip {
        background: var(--color-primary);
        padding: 40px 0;
    }

    .benefits-inner {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 20px;
        flex-wrap: wrap;
    }

    .benefit-item {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .benefit-icon {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(0, 229, 255, 0.1);
        border: 1px solid rgba(0, 229, 255, 0.3);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        color: var(--color-accent);
        flex-shrink: 0;
    }

    .benefit-text {
        font-size: 14px;
        color: #E8EDF5;
        letter-spacing: 0.5px;
    }

    .benefit-text strong {
        color: #FFFFFF;
        display: block;
        font-size: 15px;
    }

    /* Alliance Types */
    .alliance-types-section {
        background: var(--color-bg-alt);
    }

    .types-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
        margin-top: 32px;
    }

    .type-card {
        background: var(--color-bg);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border);
        padding: 24px 20px;
        text-align: center;
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
    }

    .type-card::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
        transform: scaleX(0);
        transition: transform 0.3s ease;
    }

    .type-card:hover::after {
        transform: scaleX(1);
    }

    .type-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 24px var(--color-shadow-hover);
    }

    .type-icon {
        font-size: 32px;
        margin-bottom: 12px;
        color: var(--color-accent-deep);
    }

    .type-card h4 {
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 8px;
    }

    .type-card p {
        font-size: 13px;
        color: var(--color-text-sub);
        line-height: 1.6;
    }

    /* FAQ Section */
    .faq-section {
        background: var(--color-bg);
    }

    .faq-wrapper {
        max-width: 820px;
        margin: 0 auto;
    }

    .faq-item {
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        margin-bottom: 16px;
        overflow: hidden;
        transition: all 0.3s ease;
    }

    .faq-item:hover {
        border-color: rgba(0, 229, 255, 0.3);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 18px 24px;
        cursor: pointer;
        font-weight: 600;
        font-size: 16px;
        color: var(--color-text);
        transition: color 0.3s ease;
        gap: 16px;
    }

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

    .faq-question .faq-arrow {
        flex-shrink: 0;
        width: 20px;
        height: 20px;
        position: relative;
        transition: transform 0.25s ease;
    }

    .faq-question .faq-arrow::before,
    .faq-question .faq-arrow::after {
        content: '';
        position: absolute;
        background: var(--color-accent-deep);
        width: 2px;
        height: 10px;
        top: 5px;
        left: 9px;
        transition: transform 0.25s ease;
    }

    .faq-question .faq-arrow::before {
        transform: rotate(0deg);
    }

    .faq-question .faq-arrow::after {
        transform: rotate(90deg);
    }

    .faq-item.open .faq-question .faq-arrow::before {
        transform: rotate(90deg);
    }

    .faq-item.open .faq-question .faq-arrow::after {
        transform: rotate(0deg);
    }

    .faq-item.open .faq-question {
        border-left: 3px solid var(--color-accent);
        color: var(--color-accent-deep);
    }

    .faq-answer {
        padding: 0 24px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
        background: var(--color-bg-alt);
        font-size: 14px;
        color: var(--color-text-sub);
        line-height: 1.7;
    }

    .faq-item.open .faq-answer {
        padding: 16px 24px;
        max-height: 300px;
    }

    /* CTA Section */
    .cta-section {
        position: relative;
        background: var(--color-primary);
        padding: 80px 0;
        overflow: hidden;
        text-align: center;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: -50%;
        left: 50%;
        transform: translateX(-50%);
        width: 600px;
        height: 200%;
        background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 60%);
        pointer-events: none;
    }

    .cta-section h2 {
        font-size: 32px;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 16px;
        position: relative;
        z-index: 2;
    }

    .cta-section p {
        font-size: 16px;
        color: #B8C4D6;
        max-width: 560px;
        margin: 0 auto 32px;
        position: relative;
        z-index: 2;
    }

    .cta-section .btn {
        position: relative;
        z-index: 2;
    }

    /* Footer */
    .site-footer {
        background: var(--color-primary);
        padding: 60px 0 0;
        margin-top: auto;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
    }

    .footer-brand p {
        color: #B8C4D6;
        font-size: 14px;
        line-height: 1.7;
        margin-top: 16px;
        max-width: 360px;
    }

    .footer-logo {
        font-size: 20px;
        font-weight: 700;
        color: #FFFFFF;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .logo-diamond {
        display: inline-block;
        width: 10px;
        height: 10px;
        background: var(--color-gold);
        transform: rotate(45deg);
        box-shadow: 0 0 8px rgba(240, 180, 41, 0.6);
    }

    .footer-links h4 {
        font-size: 15px;
        font-weight: 600;
        color: #FFFFFF;
        margin-bottom: 16px;
        letter-spacing: 1px;
    }

    .footer-links ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .footer-links ul li {
        margin-bottom: 10px;
    }

    .footer-links ul li a {
        font-size: 14px;
        color: #B8C4D6;
        transition: color 0.3s ease, padding-left 0.3s ease;
    }

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

    .footer-bottom {
        background: #070A12;
        padding: 20px 0;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .footer-bottom-inner {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        justify-content: space-between;
        align-items: center;
        font-size: 12px;
        color: var(--color-text-sub);
    }

    .footer-bottom-inner a {
        color: var(--color-text-sub);
        transition: color 0.3s ease;
    }

    .footer-bottom-inner a:hover {
        color: var(--color-accent);
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .desktop-nav {
            gap: 18px;
        }
        .desktop-nav .nav-link {
            font-size: 13px;
        }
        .types-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .hero-alliance-content h1 {
            font-size: 34px;
        }
    }

    @media (max-width: 768px) {
        .desktop-nav {
            display: none;
        }
        .nav-cta {
            display: none;
        }
        .hamburger-btn {
            display: block;
        }
        .steps-grid {
            grid-template-columns: 1fr;
        }
        .hero-alliance-content h1 {
            font-size: 28px;
        }
        .hero-alliance {
            padding: 60px 0 50px;
            min-height: auto;
        }
        .hero-alliance-stats {
            gap: 24px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .benefits-inner {
            flex-direction: column;
            align-items: flex-start;
        }
        .types-grid {
            grid-template-columns: 1fr;
        }
        .cta-section h2 {
            font-size: 26px;
        }
        :root {
            --spacing-section: 48px;
            --nav-height: 60px;
        }
    }

    @media (max-width: 520px) {
        .hero-alliance-content h1 {
            font-size: 24px;
        }
        .hero-alliance-actions {
            flex-direction: column;
        }
        .hero-alliance-actions .btn {
            width: 100%;
        }
        .section-title h2 {
            font-size: 22px;
        }
        .footer-bottom-inner {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        .hero-stat-item .stat-num {
            font-size: 22px;
        }
    }