/* roulang page: index */
:root {
            --bg-deep: #0B0F19;
            --bg-card: #151D2F;
            --bg-light: #F8FAFC;
            --bg-slate: #F1F5F9;
            --text-dark: #0F172A;
            --text-muted: #64748B;
            --text-light: #F8FAFC;
            --primary-blue: #2563EB;
            --primary-hover: #1D4ED8;
            --accent-teal: #0D9488;
            --accent-orange: #EA580C;
            --border-light: #E2E8F0;
            --border-dark: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 16px 36px rgba(11, 15, 25, 0.08);
            --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: var(--font-stack);
            background-color: #FFFFFF;
            color: var(--text-dark);
            line-height: 1.6;
            -webkit-text-size-adjust: 100%;
        }

        body {
            overflow-x: hidden;
            width: 100%;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.25s ease;
        }

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部双行导航 */
        .topbar {
            background-color: #060911;
            color: #94A3B8;
            font-size: 13px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 8px 0;
        }
        .topbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar-tags span {
            margin-right: 18px;
        }

        .main-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-light);
            box-shadow: 0 2px 12px rgba(0,0,0,0.03);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--bg-deep);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .brand-logo .dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-blue), var(--accent-teal));
        }
        .nav-menu {
            display: flex;
            gap: 28px;
            list-style: none;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 600;
            color: #334155;
            padding: 8px 0;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-blue);
        }
        .nav-btn {
            background-color: var(--primary-blue);
            color: #FFFFFF;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .nav-btn:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
        }

        /* Hero 杂志分栏首屏 */
        .hero-section {
            background: linear-gradient(rgba(11, 15, 25, 0.92), rgba(11, 15, 25, 0.94)), url('/assets/images/6d76289ca6791cb7.jpg') center/cover no-repeat;
            color: #FFFFFF;
            padding: 70px 0 90px;
            position: relative;
            border-bottom: 1px solid var(--border-dark);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.25fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(13, 148, 136, 0.2);
            border: 1px solid var(--accent-teal);
            color: #2DD4BF;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 44px;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 22px;
            letter-spacing: -0.5px;
        }
        .hero-title span {
            color: #60A5FA;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: #CBD5E1;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            align-items: center;
            margin-bottom: 36px;
        }
        .btn-primary {
            background-color: var(--primary-blue);
            color: #FFFFFF;
            padding: 14px 30px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            display: inline-block;
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
        }
        .btn-outline {
            background-color: transparent;
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
        }
        .btn-outline:hover {
            border-color: #FFFFFF;
            background: rgba(255, 255, 255, 0.05);
        }
        .hero-metrics {
            display: flex;
            gap: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-dark);
        }
        .metric-item b {
            font-size: 22px;
            color: #38BDF8;
            display: block;
        }
        .metric-item span {
            font-size: 13px;
            color: #94A3B8;
        }

        /* Hero 右侧精选卡 */
        .hero-feature-card {
            background: rgba(21, 29, 47, 0.85);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }
        .hero-card-img {
            height: 230px;
            overflow: hidden;
            position: relative;
        }
        .hero-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-card-body {
            padding: 28px;
        }
        .hero-card-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-orange);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .hero-card-title {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .hero-card-p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .hero-card-list {
            list-style: none;
            font-size: 13px;
            color: #CBD5E1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }
        .hero-card-list li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-card-list li::before {
            content: "✓";
            color: #34D399;
            font-weight: bold;
        }

        /* 统一通用 Section 样式 */
        section {
            padding: 85px 0;
            position: relative;
        }
        .section-header {
            margin-bottom: 50px;
        }
        .section-header.center {
            text-align: center;
            max-width: 820px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-badge {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary-blue);
            background: #EFF6FF;
            padding: 4px 14px;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.35;
            margin-bottom: 14px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* 1. 倒计时与技术交付排期 */
        .countdown-strip {
            background-color: #064E3B;
            background-image: linear-gradient(135deg, #064E3B 0%, #0F172A 100%);
            color: #FFFFFF;
            padding: 36px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .countdown-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .countdown-text h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .countdown-text p {
            font-size: 14px;
            color: #A7F3D0;
        }
        .timer-boxes {
            display: flex;
            gap: 12px;
        }
        .t-box {
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 8px 16px;
            border-radius: 8px;
            text-align: center;
            min-width: 68px;
        }
        .t-box b {
            font-size: 24px;
            font-weight: 800;
            color: #FDE047;
            display: block;
            line-height: 1.1;
        }
        .t-box span {
            font-size: 11px;
            color: #D1D5DB;
        }

        /* 2. 活动亮点与架构优势墙 */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .highlight-card {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .highlight-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: #BFDBFE;
        }
        .highlight-card .h-num {
            font-size: 32px;
            font-weight: 900;
            color: #E2E8F0;
            margin-bottom: 12px;
            line-height: 1;
        }
        .highlight-card h4 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .highlight-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 3. 礼包与会员权益对比表 */
        .section-membership {
            background-color: var(--bg-light);
        }
        .table-wrap {
            overflow-x: auto;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .tier-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }
        .tier-table th, .tier-table td {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-light);
        }
        .tier-table th {
            background-color: #F8FAFC;
            font-weight: 700;
            color: var(--text-dark);
        }
        .tier-table td:first-child {
            font-weight: 600;
            color: #334155;
            width: 25%;
        }
        .tier-col-popular {
            background: #F0FDF4;
        }
        .badge-recommended {
            background: #16A34A;
            color: #FFF;
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 10px;
            margin-left: 6px;
        }

        /* 4. 实施流程与步骤 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-block {
            background: #FFFFFF;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            position: relative;
        }
        .step-idx {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary-blue);
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .step-block h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-block p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 5. 奖励与能力矩阵预览 */
        .matrix-section {
            background: #0B0F19;
            color: #FFFFFF;
        }
        .matrix-section .section-title {
            color: #FFFFFF;
        }
        .matrix-section .section-subtitle {
            color: #94A3B8;
        }
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .matrix-item {
            background: #151D2F;
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 28px;
            position: relative;
        }
        .matrix-item h4 {
            font-size: 18px;
            color: #60A5FA;
            margin-bottom: 10px;
        }
        .matrix-item p {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
        }

        /* 6. 场景演示 */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .scenario-card {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #FFFFFF;
        }
        .scenario-img {
            height: 190px;
            overflow: hidden;
        }
        .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scenario-body {
            padding: 24px;
        }
        .scenario-tag {
            font-size: 12px;
            color: var(--accent-teal);
            font-weight: 700;
            margin-bottom: 6px;
        }.scenario-tag { font-size: 12px; color: var(--accent-teal); font-weight: 700; margin-bottom: 6px; }
.section-title { font-size: 24px; color: var(--text-color); margin-bottom: 12px; }
.post { border: 1px solid var(--border-color); padding: 12px; margin-bottom: 12px; }
.post-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.author { font-weight: 600; }
.date { color: var(--secondary-text-color); font-size: 12px; }
.post-content { margin-bottom: 8px; }
.comments { margin-top: 16px; }
.comment { border-left: 2px solid var(--accent-color); padding-left: 8px; margin-bottom: 8px; }
.comment-author { font-weight: 600; margin-right: 4px; }
.comment-date { color: var(--secondary-text-color); font-size: 10px; }
.comment-text { font-size: 14px; }
.new-post-form { margin-top: 24px; }
label { display: block; margin-bottom: 4px; }
input[type="text"], textarea { width: 100%; padding: 8px; margin-bottom: 12px; border: 1px solid var(--border-color); border-radius: 4px; }
button { background-color: var(--accent-color); color: white; padding: 10px 16px; border: none; border-radius: 4px; cursor: pointer; }
body { font-family: sans-serif; background-color: var(--background-color); color: var(--text-color); margin: 0; padding: 0; }
.container { max-width: 800px; margin: 20px auto; padding: 20px; }