/* roulang page: index */
:root {
            --primary: #1E293B;
            --primary-dark: #0F172A;
            --accent: #D97706;
            --accent-hover: #B45309;
            --accent-light: #FEF3C7;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --bg-deep: #0B0F19;
            --text-main: #0F172A;
            --text-muted: #475569;
            --text-sub: #94A3B8;
            --border-color: rgba(226, 232, 240, 0.9);
            --border-dark: rgba(51, 65, 85, 0.6);
            --radius-sm: 6px;
            --radius-md: 10px;
            --shadow-subtle: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
            --shadow-card: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
            --shadow-float: 0 20px 30px -10px rgba(15, 23, 42, 0.15);
            --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .narrow-container {
            max-width: 900px;
            margin: 0 auto;
        }

        /* 顶部辅助条与主导航 */
        .top-bar {
            background-color: var(--primary-dark);
            color: var(--text-sub);
            font-size: 13px;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar-badge {
            background: rgba(217, 119, 6, 0.2);
            color: #FBBF24;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
            margin-right: 8px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--accent);
            font-size: 24px;
        }
        .nav-links {
            display: flex;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 15px;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--accent);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--accent);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.2s ease-out;
            border: 1px solid transparent;
        }
        .btn-primary {
            background-color: var(--accent);
            color: #FFFFFF;
            box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(217, 119, 6, 0.35);
        }
        .btn-secondary {
            background-color: transparent;
            color: var(--primary-dark);
            border-color: var(--border-color);
        }
        .btn-secondary:hover {
            background-color: rgba(241, 245, 249, 0.8);
            border-color: var(--text-sub);
        }
        .btn-dark {
            background-color: var(--primary-dark);
            color: #FFFFFF;
        }
        .btn-dark:hover {
            background-color: #1e293b;
            transform: translateY(-2px);
        }

        /* 统一 Section 规范 */
        section {
            padding: 80px 0;
            position: relative;
        }
        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }
        .section-badge {
            display: inline-block;
            text-transform: uppercase;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1.5px;
            color: var(--accent);
            background: rgba(217, 119, 6, 0.1);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Section 1: Hero 首屏落地页 */
        .hero-section {
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%), url('/assets/images/06f68e8ee3f44c5b.webp') center/cover no-repeat;
            background-blend-mode: overlay;
            color: #FFFFFF;
            padding: 100px 0 90px;
            position: relative;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 13px;
            color: #FBBF24;
            margin-bottom: 24px;
        }
        .hero-h1 {
            font-size: 46px;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-h1 span {
            color: #F59E0B;
        }
        .hero-desc {
            font-size: 16px;
            color: #CBD5E1;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-cta-group {
            display: flex;
            gap: 16px;
            align-items: center;
            margin-bottom: 36px;
        }
        .hero-trust-strip {
            display: flex;
            gap: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 24px;
        }
        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #94A3B8;
        }
        .hero-trust-item i {
            color: #F59E0B;
        }
        .hero-stage-card {
            background: rgba(15, 23, 42, 0.75);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-float);
        }
        .hero-stage-card img {
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 16px;
        }

        /* 优惠券与限时行动条（领券视觉） */
        .coupon-banner {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px;
            margin-top: -40px;
            box-shadow: var(--shadow-card);
            position: relative;
            z-index: 10;
        }
        .coupon-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }
        .coupon-ticket {
            background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%);
            border: 1px dashed #D97706;
            border-radius: var(--radius-sm);
            padding: 18px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .coupon-ticket-info h4 {
            font-size: 18px;
            font-weight: 800;
            color: #92400E;
        }
        .coupon-ticket-info p {
            font-size: 13px;
            color: #B45309;
        }

        /* Section 2: 产品价值 / 架构体系 */
        .architecture-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .arch-features {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .arch-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            display: flex;
            gap: 16px;
            transition: all 0.2s ease;
        }
        .arch-card:hover {
            border-color: var(--accent);
            transform: translateX(4px);
        }
        .arch-icon {
            width: 44px;
            height: 44px;
            background: rgba(217, 119, 6, 0.1);
            color: var(--accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }

        /* Section 3: 六大核心策略赋能优势 (2x3 Grid) */
        .six-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-subtle);
            transition: all 0.25s ease;
        }
        .feature-box:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(217, 119, 6, 0.4);
        }
        .feature-box .f-icon {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 20px;
            display: inline-block;
        }
        .feature-box h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .feature-box p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* Section 4: 热门策略游戏矩阵展示 */
        .games-showcase-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .game-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-subtle);
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
        }
        .game-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card);
        }
        .game-thumb {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .game-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .game-card:hover .game-thumb img {
            transform: scale(1.05);
        }
        .game-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(15, 23, 42, 0.85);
            color: #FBBF24;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
            backdrop-filter: blur(4px);
        }
        .game-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .game-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .game-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.6;
        }
        .game-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            font-size: 13px;
            color: var(--text-sub);
        }
        .game-meta span strong {
            color: var(--text-main);
        }

        /* Section 5: 深色战术沉浸/引擎理念区 */
        .deep-engine-section {
            background-color: var(--bg-deep);
            color: #FFFFFF;
            background-image: url('/assets/images/8ca9756c238b5e96.jpg');
            background-size: cover;
            background-position: center;
            background-blend-mode: soft-light;
        }
        .engine-content-wrap {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }
        .engine-quote {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.6;
            margin-bottom: 32px;
            color: #F1F5F9;
        }
        .topology-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 40px;
        }
        .topo-node {
            background: rgba(30, 41, 59, 0.7);
            border: 1px solid var(--border-dark);
            padding: 20px 16px;
            border-radius: var(--radius-sm);
            text-align: left;
        }
        .topo-node h4 {
            font-size: 16px;
            color: #F59E0B;
            margin-bottom: 8px;
            font-family: var(--font-mono);
        }
        .topo-node p {
            font-size: 13px;
            color: #94A3B8;
            line-height: 1.5;
        }

        /* Section 6: 三步上手 / 部署流程 */
        .step-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .step-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            position: relative;
        }
        .step-number {
            font-size: 48px;
            font-weight: 900;
            color: rgba(217, 119, 6, 0.15);
            line-height: 1;
            position: absolute;
            top: 20px;
            right: 24px;
            font-family: var(--font-mono);
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* Section 7: 平台关键指标统计条 */
        .metrics-section {
            background: var(--primary-dark);
            color: #FFFFFF;
            padding: 50px 0;
            border-top: 1px solid var(--border-dark);
            border-bottom: 1px solid var(--border-dark);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-card {
            padding: 16px;
        }
        .metric-value {
            font-size: 38px;
            font-weight: 900;
            color: #F59E0B;
            font-family: var(--font-mono);
            margin-bottom: 6px;
        }
        .metric-label {
            font-size: 14px;
            color: #94A3B8;
            font-weight: 600;
        }

        /* Section 8: 指挥官与公会评价墙 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-subtle);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .t-stars {
            color: #F59E0B;
            font-size: 14px;
            margin-bottom: 14px;
        }
        .t-comment {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .t-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }
        .t-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
        }
        .t-author-name {
            font-size: 15px;
            font-weight: 700;
        }
        .t-author-role {
            font-size: 12px;
            color: var(--text-sub);
        }

        /* Section 9: 策略前沿动态与平衡通告 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 24px;
            transition: all 0.2s ease;
        }
        .news-item:hover {
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .news-date {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            font-family: var(--font-mono);
            margin-bottom: 8px;
        }
        .news-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .news-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Section 10: 异议拆解与深度 FAQ 手风琴 */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
        }
        .faq-toggle {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            background: none;
            border: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }
        .faq-toggle i {
            color: var(--accent);
            transition: transform 0.2s ease;
        }
        .faq-body {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-card.open .faq-body {
            display: block;
        }
        .faq-card.open .faq-toggle i {
            transform: rotate(180deg);
        }

        /* Section 11: 平台安全与服务保障条 */
        .security-strip {
            background: #FFFFFF;
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 36px 0;
        }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .sec-item {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .sec-item i {
            font-size: 28px;
            color: var(--accent);
        }
        .sec-item h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
        }
        .sec-item p {
            font-size: 12px;
            color: var(--text-sub);
        }

        /* Section 12: 底部强转化召唤区 (CTA) */
        .final-cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, #1e293b 100%);
            color: #FFFFFF;
            text-align: center;
            padding: 80px 0;
        }
        .final-cta-box {
            max-width: 760px;
            margin: 0 auto;
        }
        .final-cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .final-cta-box p {
            font-size: 16px;
            color: #CBD5E1;
            margin-bottom: 36px;
        }

        /* 页脚规范 */
        .site-footer {
            background-color: #070A10;
            color: #64748B;
            font-size: 14px;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #F8FAFC;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a:hover {
            color: #F59E0B;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }

        /* 移动端常驻转化栏 */
        .mobile-sticky-cta {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(10px);
            padding: 12px 20px;
            z-index: 999;
            box-shadow: 0 -4px 16px rgba(0,0,0,0.2);
            justify-content: space-between;
            align-items: center;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .hero-grid, .architecture-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .six-grid, .games-showcase-grid, .testimonials-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topology-grid, .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero-h1 {
                font-size: 32px;
            }
            .nav-links {
                display: none;
            }
            .six-grid, .games-showcase-grid, .step-cards-grid, .metrics-grid, .testimonials-grid, .news-grid, .topology-grid, .security-grid {
                grid-template-columns: 1fr;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .mobile-sticky-cta {
                display: flex;
            }
            body {
                padding-bottom: 65px;
            }
        }