/* roulang page: index */
:root {
            --bg-base: #F7F8F9;
            --bg-card: #FFFFFF;
            --bg-dark: #121316;
            --bg-dark-alt: #1B1C1E;
            --text-main: #1B1C1E;
            --text-muted: #6B7280;
            --text-light: #E5E7EB;
            --accent-orange: #FF4D26;
            --accent-green: #10B981;
            --border-light: rgba(0, 0, 0, 0.08);
            --border-dark: rgba(255, 255, 255, 0.08);
            --radius-sm: 4px;
            --radius-md: 6px;
            --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.03);
            --shadow-float: 0 12px 32px rgba(0, 0, 0, 0.06);
            --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        /* 杂志刊头 Header */
        .site-header {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-topbar {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            font-size: 0.8125rem;
            color: var(--text-muted);
        }

        .brand-title {
            font-size: 1.5rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--text-main);
            text-transform: uppercase;
            line-height: 1.1;
        }

        .header-status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 10px;
            background: rgba(16, 185, 129, 0.08);
            color: var(--accent-green);
            font-weight: 600;
            border-radius: var(--radius-sm);
        }

        .header-status-badge::before {
            content: "";
            width: 6px;
            height: 6px;
            background: var(--accent-green);
            border-radius: 50%;
        }

        .magazine-nav-bar {
            padding: 10px 0;
            overflow-x: auto;
            white-space: nowrap;
        }

        .magazine-nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0;
        }

        .magazine-nav-menu li {
            display: inline-flex;
            align-items: center;
        }

        .magazine-nav-menu li:not(:last-child)::after {
            content: "·";
            margin: 0 12px;
            color: rgba(0,0,0,0.2);
            font-weight: bold;
        }

        .magazine-nav-link {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-muted);
            padding: 6px 0;
        }

        .magazine-nav-link:hover, .magazine-nav-link.active {
            color: var(--accent-orange);
        }

        /* 基础 Section 布局 */
        .section-block {
            padding: 80px 0;
            position: relative;
        }

        .section-block.alt-bg {
            background-color: #FFFFFF;
        }

        .section-block.dark-bg {
            background-color: var(--bg-dark);
            color: var(--text-light);
        }

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

        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-orange);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 2.125rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .section-block.dark-bg .section-title {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 820px;
        }

        .section-block.dark-bg .section-desc {
            color: #9CA3AF;
        }

        /* 通用卡片体系 */
        .clean-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-subtle);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .clean-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-float);
            border-color: rgba(0, 0, 0, 0.15);
        }

        .dark-card {
            background: var(--bg-dark-alt);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: var(--transition);
            height: 100%;
        }

        .dark-card:hover {
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }

        /* 按钮与微交互 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: var(--accent-orange);
            color: #FFFFFF !important;
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            min-height: 48px;
        }

        .btn-primary:hover {
            background-color: #E03E19;
            transform: scale(1.02);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: transparent;
            color: var(--text-main);
            border: 1px solid var(--border-light);
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            min-height: 48px;
        }

        .section-block.dark-bg .btn-outline {
            color: #FFFFFF;
            border-color: var(--border-dark);
        }

        .btn-outline:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
        }

        /* 1. 首屏 Banner (Hero) - 优惠券墙入口版式结构 */
        .hero-section {
            background-image: linear-gradient(to right, rgba(18, 19, 22, 0.94) 0%, rgba(18, 19, 22, 0.82) 100%), url('/assets/images/5d22eebaa7234a78.png');
            background-size: cover;
            background-position: center;
            color: #FFFFFF;
            padding: 80px 0 100px;
            position: relative;
        }

        .hero-coupon-card {
            background: linear-gradient(135deg, #1F2228 0%, #15171B 100%);
            border: 1px dashed rgba(255, 77, 38, 0.4);
            border-radius: var(--radius-md);
            padding: 32px;
            position: relative;
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
        }

        .hero-coupon-header {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 16px;
            margin-bottom: 20px;
        }

        .hero-coupon-tag {
            background: var(--accent-orange);
            color: #fff;
            padding: 3px 8px;
            font-size: 0.75rem;
            font-weight: 700;
            border-radius: 2px;
            display: inline-block;
            margin-bottom: 8px;
        }

        .hero-metrics-pill {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.8125rem;
            margin-bottom: 20px;
        }

        /* 2. 赛事分析痛点剖析区 */
        .friction-card {
            border-left: 3px solid #E5E7EB;
            padding-left: 20px;
            height: 100%;
        }

        .friction-card.highlight {
            border-left-color: var(--accent-orange);
        }

        /* 3. 架构方案 */
        .architecture-flow {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px;
        }

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

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

        .flow-num {
            font-size: 1.125rem;
            font-weight: 800;
            color: var(--accent-orange);
            background: rgba(255, 77, 38, 0.08);
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            flex-shrink: 0;
        }

        /* 6. 四步流程阶梯 */
        .step-timeline-badge {
            font-size: 2.25rem;
            font-weight: 900;
            color: rgba(255, 77, 38, 0.2);
            line-height: 1;
            margin-bottom: 12px;
        }

        /* 8. 关键数据指标条 */
        .stat-display-num {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1;
            letter-spacing: -0.03em;
            color: var(--accent-orange);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            margin-bottom: 8px;
        }

        /* 9. 实战故事 */
        .story-img-container {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-float);
        }

        /* 10. 专家与口碑评价 */
        .quote-icon {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-orange);
            line-height: 1;
            margin-bottom: 12px;
        }

        /* 12. 资讯卡 */
        .news-item {
            padding: 24px 0;
            border-bottom: 1px solid var(--border-light);
        }

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

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

        .news-date {
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        /* 13. FAQ 手风琴 */
        .faq-box {
            border: 1px solid var(--border-light);
            background: #FFFFFF;
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-title {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1.0625rem;
            background: #FAFAFA;
        }

        .faq-content {
            padding: 20px 24px;
            border-top: 1px solid var(--border-light);
            font-size: 0.9375rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* 全局页脚 */
        .site-footer {
            background-color: var(--bg-dark);
            color: #9CA3AF;
            padding: 80px 0 32px;
            border-top: 1px solid var(--border-dark);
            font-size: 0.875rem;
        }

        .footer-logo {
            font-size: 1.375rem;
            font-weight: 900;
            color: #FFFFFF;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .footer-heading {
            font-size: 0.9375rem;
            font-weight: 700;
            color: #FFFFFF;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
        }

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

        .footer-link-list li {
            margin-bottom: 10px;
        }

        .footer-link-list a:hover {
            color: var(--accent-orange);
        }

        .footer-bottom {
            margin-top: 64px;
            padding-top: 24px;
            border-top: 1px solid var(--border-dark);
            font-size: 0.8125rem;
            color: #6B7280;
        }

        /* 移动适配微调 */
        @media screen and (max-width: 63.9375em) {
            .section-block {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .stat-display-num {
                font-size: 2.25rem;
            }
        }