/* roulang page: index */
:root {
            --bg-main: #0B0E14;
            --bg-secondary: #12161F;
            --bg-card: #181E29;
            --bg-card-hover: #1F2737;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-cyan: rgba(0, 245, 212, 0.25);
            --cyan-primary: #00F5D4;
            --cyan-glow: rgba(0, 245, 212, 0.4);
            --purple-accent: #7928CA;
            --orange-alert: #FF5500;
            --text-heading: #F0F6FC;
            --text-body: #C9D1D9;
            --text-muted: #8B949E;
            --radius-md: 10px;
            --radius-lg: 16px;
            --container-max: 1280px;
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            background-color: var(--bg-main);
            color: var(--text-body);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }

        body {
            line-height: 1.75;
            background-color: var(--bg-main);
            overflow-x: hidden;
        }

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

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

        button, input {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .section-wrapper {
            padding: 5.5rem 0;
            position: relative;
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-alt {
            background-color: var(--bg-secondary);
        }

        .section-head {
            margin-bottom: 3.2rem;
            max-width: 820px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--cyan-primary);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 0.85rem;
            background: rgba(0, 245, 212, 0.08);
            padding: 0.3rem 0.85rem;
            border-radius: 999px;
            border: 1px solid var(--border-cyan);
        }

        .section-title {
            font-size: 2.25rem;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-heading);
            margin-bottom: 1rem;
            font-weight: 700;
        }

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

        /* 统一按钮体系 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
            padding: 0.85rem 1.85rem;
            font-size: 0.98rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: var(--transition-smooth);
            border: 1px solid transparent;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--orange-alert) 0%, #FF7700 100%);
            color: #FFFFFF;
            box-shadow: 0 4px 18px rgba(255, 85, 0, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(255, 85, 0, 0.5);
            background: linear-gradient(135deg, #FF6611 0%, #FF8811 100%);
        }

        .btn-cyan {
            background: var(--cyan-primary);
            color: #071318;
            box-shadow: 0 4px 18px var(--cyan-glow);
        }

        .btn-cyan:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(0, 245, 212, 0.6);
            background: #24ffdc;
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--text-heading);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--cyan-primary);
            color: var(--cyan-primary);
        }

        /* 滚动收缩双层导航体系 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.95);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-subtle);
            transition: all 0.35s ease;
        }

        .site-header.shrunk {
            background: rgba(11, 14, 20, 0.88);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-topbar {
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 0.5rem 0;
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
            overflow: hidden;
            max-height: 50px;
            opacity: 1;
        }

        .site-header.shrunk .nav-topbar {
            max-height: 0;
            opacity: 0;
            padding: 0;
            border-bottom: none;
        }

        .topbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            color: var(--cyan-primary);
        }

        .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--cyan-primary);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--cyan-primary);
            animation: pulse-ring 2s infinite;
        }

        @keyframes pulse-ring {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 245, 212, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 245, 212, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 245, 212, 0); }
        }

        .nav-mainbar {
            padding: 0.85rem 0;
            transition: padding 0.3s ease;
        }

        .site-header.shrunk .nav-mainbar {
            padding: 0.6rem 0;
        }

        .nav-main-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: -0.01em;
        }

        .brand-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--cyan-primary), var(--purple-accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0E14;
            font-weight: 900;
            font-size: 1.1rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            font-size: 0.94rem;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
            padding: 0.35rem 0;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--cyan-primary);
            transition: width 0.25s ease;
        }

        .nav-links a:hover::after, .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-heading);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.4rem;
        }

        /* 移动端抽屉菜单 */
        .mobile-drawer {
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 1.5rem;
            display: none;
            flex-direction: column;
            gap: 1.2rem;
            z-index: 999;
        }

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

        .mobile-drawer a {
            font-size: 1.05rem;
            color: var(--text-heading);
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* 板块 1: 无大图首屏（图标矩阵+状态条+短标题） */
        #hero {
            padding-top: 10rem;
            padding-bottom: 5.5rem;
            background: radial-gradient(circle at 50% 10%, rgba(121, 40, 202, 0.15) 0%, rgba(11, 14, 20, 1) 70%),
                        url('/assets/images/c77a4fba21b091af.jpg') center/cover no-repeat;
            position: relative;
        }

        #hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 14, 20, 0.88);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 960px;
            margin: 0 auto;
        }

        .hero-status-strip {
            display: inline-flex;
            align-items: center;
            gap: 1.25rem;
            background: rgba(24, 30, 41, 0.9);
            border: 1px solid var(--border-cyan);
            border-radius: 999px;
            padding: 0.55rem 1.4rem;
            margin-bottom: 2rem;
            font-size: 0.88rem;
            backdrop-filter: blur(8px);
        }

        .hero-status-strip span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--text-body);
        }

        .hero-status-strip strong {
            color: var(--cyan-primary);
        }

        .hero-title {
            font-size: 3.2rem;
            line-height: 1.15;
            letter-spacing: -0.03em;
            color: var(--text-heading);
            margin-bottom: 1.35rem;
            font-weight: 800;
        }

        .hero-desc {
            font-size: 1.15rem;
            line-height: 1.85;
            color: var(--text-body);
            max-width: 820px;
            margin: 0 auto 2.5rem;
        }

        .hero-cta-btns {
            display: flex;
            justify-content: center;
            gap: 1.25rem;
            margin-bottom: 3.5rem;
            flex-wrap: wrap;
        }

        .hero-features-matrix {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            margin-top: 1.5rem;
        }

        .matrix-card {
            background: rgba(24, 30, 41, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 1.4rem 1rem;
            text-align: center;
            transition: var(--transition-smooth);
            backdrop-filter: blur(6px);
        }

        .matrix-card:hover {
            border-color: var(--border-cyan);
            transform: translateY(-4px);
            background: rgba(31, 39, 55, 0.85);
        }

        .matrix-card .card-icon {
            font-size: 1.7rem;
            margin-bottom: 0.6rem;
            color: var(--cyan-primary);
        }

        .matrix-card h4 {
            font-size: 1.02rem;
            color: var(--text-heading);
            margin-bottom: 0.35rem;
        }

        .matrix-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* 板块 2: 服务亮点与底层架构解析 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 3.5rem;
            align-items: center;
        }

        .intro-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-cyan);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
        }

        .intro-visual img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .intro-specs-badge {
            position: absolute;
            bottom: 1.2rem;
            left: 1.2rem;
            right: 1.2rem;
            background: rgba(11, 14, 20, 0.92);
            border: 1px solid rgba(0, 245, 212, 0.3);
            border-radius: var(--radius-md);
            padding: 0.85rem 1.2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.84rem;
        }

        .spec-item strong {
            color: var(--cyan-primary);
            display: block;
            font-size: 1.1rem;
        }

        .intro-content ul {
            list-style: none;
            margin: 1.8rem 0;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .intro-content li {
            display: flex;
            align-items: flex-start;
            gap: 0.85rem;
            font-size: 0.98rem;
        }

        .intro-content li::before {
            content: '✓';
            color: var(--cyan-primary);
            font-weight: bold;
            font-size: 1.1rem;
            line-height: 1.6;
        }

        /* 板块 3: 核心战术优势六维矩阵 */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .adv-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2.2rem 1.8rem;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .adv-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--cyan-primary), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .adv-card:hover {
            border-color: var(--border-cyan);
            background: var(--bg-card-hover);
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
        }

        .adv-card:hover::after {
            opacity: 1;
        }

        .adv-metric {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--cyan-primary);
            background: rgba(0, 245, 212, 0.1);
            padding: 0.2rem 0.6rem;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 1.1rem;
        }

        .adv-card h3 {
            font-size: 1.25rem;
            color: var(--text-heading);
            margin-bottom: 0.75rem;
        }

        .adv-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 板块 4: 热门支持品类与终端 */
        .gamemode-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.85rem;
        }

        .gamemode-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition-smooth);
        }

        .gamemode-card:hover {
            border-color: rgba(121, 40, 202, 0.5);
            transform: translateY(-5px);
        }

        .gamemode-thumb {
            position: relative;
            height: 210px;
            overflow: hidden;
        }

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

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

        .gamemode-tag {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: rgba(11, 14, 20, 0.85);
            border: 1px solid var(--border-subtle);
            padding: 0.25rem 0.65rem;
            border-radius: 4px;
            font-size: 0.78rem;
            color: var(--cyan-primary);
        }

        .gamemode-body {
            padding: 1.75rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .gamemode-body h3 {
            font-size: 1.2rem;
            color: var(--text-heading);
            margin-bottom: 0.65rem;
        }

        .gamemode-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
            line-height: 1.65;
        }

        .gamemode-features {
            list-style: none;
            margin-top: auto;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 1rem;
            font-size: 0.86rem;
            color: var(--text-body);
        }

        .gamemode-features li {
            margin-bottom: 0.4rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .gamemode-features li::before {
            content: '▸';
            color: var(--cyan-primary);
        }

        /* 板块 5: 实机理念与自研引擎理念 */
        #dark-engine {
            background: radial-gradient(circle at 50% 50%, rgba(24, 30, 41, 0.9) 0%, #06080B 100%),
                        url('/assets/images/725d4d455d3c0eac.png') center/cover no-repeat;
            position: relative;
        }

        .engine-dual-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            margin-top: 2rem;
        }

        .engine-box {
            background: rgba(18, 22, 31, 0.85);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2.2rem;
            backdrop-filter: blur(10px);
        }

        .engine-box.highlight {
            border-color: var(--border-cyan);
            background: rgba(18, 22, 31, 0.95);
        }

        .engine-box h3 {
            font-size: 1.35rem;
            color: var(--text-heading);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .engine-box p {
            font-size: 0.94rem;
            line-height: 1.75;
            color: var(--text-body);
            margin-bottom: 1.2rem;
        }

        /* 板块 6: 真实电竞战队体验故事流 */
        .story-timeline {
            display: flex;
            flex-direction: column;
            gap: 3.5rem;
        }

        .story-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }

        .story-item:nth-child(even) {
            direction: rtl;
        }

        .story-item:nth-child(even) .story-desc {
            direction: ltr;
        }

        .story-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
        }

        .story-tag {
            font-size: 0.82rem;
            color: var(--orange-alert);
            font-weight: 700;
            margin-bottom: 0.6rem;
            display: block;
        }

        .story-title {
            font-size: 1.5rem;
            color: var(--text-heading);
            margin-bottom: 0.85rem;
        }

        .story-quote {
            font-size: 0.98rem;
            line-height: 1.8;
            color: var(--text-body);
            background: rgba(255, 255, 255, 0.02);
            padding: 1.2rem;
            border-left: 3px solid var(--cyan-primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin-bottom: 1rem;
        }

        /* 板块 7: 关键性能指标仪表板 */
        .stats-bar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: center;
            position: relative;
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1;
            color: var(--cyan-primary);
            letter-spacing: -0.02em;
            margin-bottom: 0.5rem;
            font-family: monospace, sans-serif;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-heading);
            font-weight: 600;
            margin-bottom: 0.35rem;
        }

        .stat-note {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* 板块 8: 玩家社区评价反馈 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.85rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
        }

        .player-info h4 {
            font-size: 1.05rem;
            color: var(--text-heading);
        }

        .player-badge {
            font-size: 0.78rem;
            color: var(--cyan-primary);
            background: rgba(0, 245, 212, 0.08);
            padding: 0.15rem 0.5rem;
            border-radius: 4px;
        }

        .review-stars {
            color: #FFB800;
            font-size: 0.9rem;
        }

        .review-text {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }

        .verified-stamp {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding-top: 0.75rem;
        }

        /* 板块 9: AI 游戏前沿资讯摘要 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            transition: var(--transition-smooth);
        }

        .news-card:hover {
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--cyan-primary);
            margin-bottom: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .news-card h3 {
            font-size: 1.05rem;
            color: var(--text-heading);
            margin-bottom: 0.65rem;
            line-height: 1.45;
        }

        .news-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1rem;
            flex-grow: 1;
        }

        .news-link {
            font-size: 0.84rem;
            color: var(--cyan-primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        /* 板块 10: 功能多维差异对比矩阵表 */
        .comparison-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            background: var(--bg-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 680px;
        }

        .comparison-table th, .comparison-table td {
            padding: 1.25rem 1.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .comparison-table th {
            background: rgba(255, 255, 255, 0.02);
            color: var(--text-heading);
            font-size: 0.98rem;
            font-weight: 700;
        }

        .comparison-table td {
            font-size: 0.92rem;
            color: var(--text-body);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .col-featured {
            background: rgba(0, 245, 212, 0.04);
            border-left: 1px solid rgba(0, 245, 212, 0.2);
            border-right: 1px solid rgba(0, 245, 212, 0.2);
            font-weight: 600;
            color: var(--text-heading) !important;
        }

        .col-featured .check-yes {
            color: var(--cyan-primary);
            font-weight: 800;
        }

        .status-no {
            color: #FF5555;
            font-weight: 600;
        }

        /* 板块 11: 常见疑问拆解 FAQ 手风琴 */
        .faq-accordion-container {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .faq-item.active {
            border-color: var(--border-cyan);
            background: var(--bg-card-hover);
        }

        .faq-header {
            padding: 1.35rem 1.6rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-header h3 {
            font-size: 1.08rem;
            color: var(--text-heading);
            font-weight: 600;
        }

        .faq-arrow {
            color: var(--cyan-primary);
            font-size: 1.2rem;
            transition: transform 0.3s ease;
        }

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

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.6rem;
            color: var(--text-body);
            font-size: 0.94rem;
            line-height: 1.8;
        }

        .faq-item.active .faq-body {
            max-height: 250px;
            padding: 0 1.6rem 1.4rem;
        }

        /* 板块 12: 安全承诺与合规检测保障条 */
        .guarantee-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .guarantee-box {
            background: rgba(24, 30, 41, 0.6);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 1.6rem;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .guarantee-icon {
            font-size: 1.8rem;
            color: var(--cyan-primary);
            flex-shrink: 0;
        }

        .guarantee-info h4 {
            font-size: 1.02rem;
            color: var(--text-heading);
            margin-bottom: 0.35rem;
        }

        .guarantee-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块 13: 终极转化驱动区 */
        #final-cta {
            background: radial-gradient(circle at 50% 50%, rgba(121, 40, 202, 0.25) 0%, rgba(11, 14, 20, 1) 80%),
                        url('/assets/images/8a3a1acc8f2a3590.jpg') center/cover no-repeat;
            text-align: center;
            position: relative;
            padding: 6.5rem 0;
        }

        #final-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 14, 20, 0.88);
            pointer-events: none;
        }

        .final-cta-inner {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .compat-icons-strip {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 2rem;
            margin-top: 2.5rem;
            color: var(--text-muted);
            font-size: 0.88rem;
            flex-wrap: wrap;
        }

        .compat-item {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        /* 底部悬浮转化条 */
        .floating-action-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(18, 22, 31, 0.94);
            border-top: 1px solid var(--border-cyan);
            padding: 0.85rem 0;
            z-index: 990;
            backdrop-filter: blur(12px);
            transform: translateY(100%);
            transition: transform 0.4s ease;
            box-shadow: 0 -8px 25px rgba(0, 0, 0, 0.5);
        }

        .floating-action-bar.visible {
            transform: translateY(0);
        }

        .floating-bar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .floating-telemetry {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            font-size: 0.88rem;
        }

        .telemetry-item {
            display: flex;
            align-items: center;
            gap: 0.45rem;
            color: var(--text-body);
        }

        .telemetry-item strong {
            color: var(--cyan-primary);
        }

        /* 页脚体系 */
        .site-footer {
            background: #07090D;
            border-top: 1px solid var(--border-subtle);
            padding: 4.5rem 0 2.5rem;
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-col h4 {
            color: var(--text-heading);
            font-size: 1.05rem;
            margin-bottom: 1.25rem;
            font-weight: 700;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.65rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.82rem;
        }

        .trust-info p {
            margin-bottom: 0.3rem;
        }

        /* 移动端与响应式断点 */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.6rem;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .advantages-grid, .gamemode-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar-grid, .guarantee-bar, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-topbar, .nav-links, .nav-cta-group {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-title {
                font-size: 2.1rem;
            }
            .hero-features-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            .engine-dual-grid {
                grid-template-columns: 1fr;
            }
            .story-item, .story-item:nth-child(even) {
                grid-template-columns: 1fr;
                direction: ltr;
            }
            .story-item:nth-child(even) .story-desc {
                direction: ltr;
            }
            .advantages-grid, .gamemode-grid, .reviews-grid, .stats-bar-grid, .guarantee-bar, .news-grid {
                grid-template-columns: 1fr;
            }
            .floating-telemetry {
                display: none;
            }
            .floating-bar-content {
                justify-content: center;
                width: 100%;
            }
            .floating-action-bar .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .hero-features-matrix {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .hero-status-strip {
                flex-direction: column;
                gap: 0.4rem;
                padding: 0.8rem 1.2rem;
                border-radius: var(--radius-md);
            }
        }