/* roulang page: index */
:root {
            --tx-primary: #ff4071;
            --tx-primary-hover: #e0285b;
            --tx-primary-soft: #fff0f4;
            --tx-primary-border: #ffd1dc;
            --tx-secondary: #4a192c;
            --tx-accent-gradient: linear-gradient(135deg, #ff4071 0%, #ff758c 100%);
            --tx-bg-card-gradient: linear-gradient(145deg, #ffffff 0%, #fff7f9 100%);
            --tx-dark: #1b1e24;
            --tx-body: #495057;
            --tx-muted: #79828b;
            --tx-light: #fcfcfd;
            --tx-border: #f0e6ea;
            --tx-radius-lg: 18px;
            --tx-radius-md: 12px;
            --tx-radius-sm: 6px;
            --tx-shadow-sm: 0 4px 12px rgba(255, 64, 113, 0.06);
            --tx-shadow-hover: 0 12px 28px rgba(255, 64, 113, 0.15);
            --tx-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--tx-font-sans);
            color: var(--tx-body);
            background-color: #faf9fa;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover, a:focus {
            color: var(--tx-primary);
        }

        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

        h1, h2, h3, h4, h5 {
            color: var(--tx-dark);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
        }

        /* 容器与基础排版 */
        .site-container {
            max-width: 1220px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: 72px 0;
        }
        .section-alt {
            background-color: #ffffff;
            border-top: 1px solid var(--tx-border);
            border-bottom: 1px solid var(--tx-border);
        }

        .section-head {
            margin-bottom: 44px;
        }
        .section-head.text-center {
            text-align: center;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--tx-primary);
            background: var(--tx-primary-soft);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
            border: 1px solid var(--tx-primary-border);
        }
        .section-title {
            font-size: 2.1rem;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--tx-muted);
            max-width: 780px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* 顶部导航：招投标公告风格定制 */
        .site-header {
            background: #ffffff;
            border-bottom: 2px solid var(--tx-primary);
            box-shadow: 0 2px 10px rgba(0,0,0,0.03);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--tx-dark);
            letter-spacing: -0.5px;
        }
        .brand-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--tx-accent-gradient);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(255, 64, 113, 0.3);
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            gap: 24px;
        }
        .nav-links li a {
            font-size: 1rem;
            font-weight: 600;
            color: var(--tx-dark);
            padding: 8px 12px;
            border-radius: var(--tx-radius-sm);
        }
        .nav-links li a.active, .nav-links li a:hover {
            color: var(--tx-primary);
            background: var(--tx-primary-soft);
        }
        .header-bulletins {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .bulletin-chip {
            background: #fff5f7;
            border: 1px solid #ffd4df;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 0.85rem;
            color: var(--tx-primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
        }
        .bulletin-chip .dot {
            width: 8px;
            height: 8px;
            background: #ff4071;
            border-radius: 50%;
            animation: pulse-dot 1.8s infinite;
        }
        @keyframes pulse-dot {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.3); opacity: 1; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }

        /* 统一卡片与按钮 */
        .tx-card {
            background: #ffffff;
            border-radius: var(--tx-radius-lg);
            border: 1px solid var(--tx-border);
            padding: 28px;
            transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            box-shadow: var(--tx-shadow-sm);
        }
        .tx-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--tx-shadow-hover);
            border-color: var(--tx-primary-border);
        }

        .btn-brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--tx-accent-gradient);
            color: #ffffff !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 26px;
            border-radius: 999px;
            box-shadow: 0 4px 14px rgba(255, 64, 113, 0.3);
            border: none;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .btn-brand:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 64, 113, 0.45);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #ffffff;
            color: var(--tx-dark) !important;
            border: 1px solid #dcd3d6;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 11px 24px;
            border-radius: 999px;
            transition: all 0.2s;
        }
        .btn-outline:hover {
            background: var(--tx-primary-soft);
            color: var(--tx-primary) !important;
            border-color: var(--tx-primary-border);
        }

        /* 徽章 Badge */
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fdf2f4;
            color: var(--tx-primary);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 6px;
            border: 1px solid #ffd4df;
        }

        /* 板块1: Hero 资源下载站风格 */
        .hero-section {
            background: radial-gradient(circle at 50% 10%, #fff0f4 0%, #faf9fa 70%);
            padding: 64px 0 80px 0;
            text-align: center;
            border-bottom: 1px solid var(--tx-border);
        }
        .hero-content {
            max-width: 860px;
            margin: 0 auto;
        }
        .hero-h1 {
            font-size: 2.85rem;
            font-weight: 800;
            color: var(--tx-dark);
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: var(--tx-body);
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .hero-search-box {
            background: #ffffff;
            border: 2px solid var(--tx-primary-border);
            border-radius: 999px;
            padding: 8px 10px 8px 24px;
            display: flex;
            align-items: center;
            max-width: 680px;
            margin: 0 auto 24px auto;
            box-shadow: 0 10px 30px rgba(255, 64, 113, 0.12);
        }
        .hero-search-box input {
            border: none;
            box-shadow: none;
            outline: none;
            font-size: 1.05rem;
            color: var(--tx-dark);
            margin: 0;
            background: transparent;
            width: 100%;
        }
        .hero-search-box input:focus {
            box-shadow: none;
            background: transparent;
        }
        .hero-quick-tags {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--tx-muted);
        }
        .tag-pill {
            background: #ffffff;
            border: 1px solid var(--tx-border);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.85rem;
            color: var(--tx-body);
            transition: all 0.2s;
        }
        .tag-pill:hover {
            border-color: var(--tx-primary);
            color: var(--tx-primary);
            background: var(--tx-primary-soft);
        }

        /* 板块2: 问题陈述 */
        .problem-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .problem-card {
            background: #ffffff;
            border: 1px dashed #e8c7cf;
            border-radius: var(--tx-radius-md);
            padding: 24px;
            text-align: left;
        }
        .problem-card .icon-box {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: #fee7ec;
            color: var(--tx-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 16px;
        }
        .problem-card h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .problem-card p {
            font-size: 0.9rem;
            color: var(--tx-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* 板块3: 操作演示 */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-item {
            background: #ffffff;
            padding: 24px;
            border-radius: var(--tx-radius-md);
            border: 1px solid var(--tx-border);
            position: relative;
        }
        .step-num {
            position: absolute;
            top: -14px;
            left: 20px;
            background: var(--tx-primary);
            color: #ffffff;
            font-weight: 800;
            font-size: 0.85rem;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 8px rgba(255, 64, 113, 0.4);
        }
        .step-item h4 {
            margin-top: 10px;
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--tx-muted);
            margin: 0;
        }

        /* 板块4: 结果预览 */
        .preview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .preview-card {
            border-radius: var(--tx-radius-lg);
            overflow: hidden;
            background: #ffffff;
            border: 1px solid var(--tx-border);
            box-shadow: var(--tx-shadow-sm);
        }
        .preview-media-box {
            height: 180px;
            background: linear-gradient(135deg, #fbe3e8 0%, #fed2dc 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            color: var(--tx-secondary);
        }
        .preview-media-box i {
            font-size: 3rem;
            opacity: 0.7;
        }
        .preview-content {
            padding: 20px;
        }
        .preview-content h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .preview-content p {
            font-size: 0.9rem;
            color: var(--tx-muted);
            margin-bottom: 14px;
        }
        .preview-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--tx-muted);
            border-top: 1px solid #f9ebed;
            padding-top: 12px;
        }

        /* 板块5: 常见卡住点 */
        .pitfall-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .pitfall-box {
            display: flex;
            gap: 16px;
            background: #ffffff;
            padding: 22px;
            border-radius: var(--tx-radius-md);
            border: 1px solid var(--tx-border);
        }
        .pitfall-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: #fff0f3;
            color: #d90429;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .pitfall-content h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .pitfall-content p {
            font-size: 0.88rem;
            color: var(--tx-muted);
            margin: 0;
        }

        /* 板块6: 成功路径 */
        .milestone-flex {
            display: flex;
            gap: 16px;
            justify-content: space-between;
            position: relative;
        }
        .milestone-item {
            flex: 1;
            background: #ffffff;
            padding: 20px;
            border-radius: var(--tx-radius-md);
            border-left: 4px solid var(--tx-primary);
            box-shadow: var(--tx-shadow-sm);
        }
        .milestone-phase {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--tx-primary);
            text-transform: uppercase;
            margin-bottom: 4px;
        }
        .milestone-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .milestone-item p {
            font-size: 0.85rem;
            color: var(--tx-muted);
            margin: 0;
        }

        /* 板块7: 卖点三连 */
        .selling-point-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .point-card {
            background: var(--tx-bg-card-gradient);
            border: 1px solid var(--tx-primary-border);
            border-radius: var(--tx-radius-lg);
            padding: 32px 24px;
            text-align: center;
        }
        .point-card .icon-round {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px auto;
            border-radius: 50%;
            background: var(--tx-accent-gradient);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            box-shadow: 0 8px 20px rgba(255, 64, 113, 0.25);
        }
        .point-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
        }
        .point-card p {
            font-size: 0.92rem;
            color: var(--tx-body);
            margin: 0;
        }

        /* 板块8: 场景演示 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: #ffffff;
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            padding: 20px;
        }
        .scenario-badge {
            font-size: 0.75rem;
            background: #edf2f7;
            color: #4a5568;
            padding: 3px 8px;
            border-radius: 4px;
            font-weight: 600;
            margin-bottom: 12px;
            display: inline-block;
        }
        .scenario-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 0.85rem;
            color: var(--tx-muted);
            margin: 0;
        }

        /* 板块9: 适用人群画像对比 */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .audience-card {
            background: #ffffff;
            border-radius: var(--tx-radius-lg);
            padding: 28px;
            border: 1px solid var(--tx-border);
        }
        .audience-card.fit {
            border-top: 4px solid #10b981;
        }
        .audience-card.unfit {
            border-top: 4px solid #ef4444;
        }
        .audience-title {
            font-size: 1.25rem;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
        }
        .audience-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .audience-list li {
            padding: 10px 0;
            border-bottom: 1px solid #f6f0f2;
            font-size: 0.92rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .audience-list li:last-child {
            border-bottom: none;
        }

        /* 板块10: 资源下载墙 */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .resource-card {
            background: #ffffff;
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            padding: 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .res-top .res-tag {
            font-size: 0.75rem;
            color: var(--tx-primary);
            background: var(--tx-primary-soft);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 700;
        }
        .res-top h4 {
            font-size: 1.05rem;
            margin: 10px 0 6px 0;
        }
        .res-top p {
            font-size: 0.85rem;
            color: var(--tx-muted);
            margin: 0 0 16px 0;
        }
        .res-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid #f8eaee;
            padding-top: 12px;
            font-size: 0.8rem;
            color: var(--tx-muted);
        }

        /* 板块11: 安全与合规体系 */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .sec-box {
            background: #ffffff;
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            padding: 24px;
            text-align: center;
        }
        .sec-box i {
            font-size: 2.2rem;
            color: var(--tx-primary);
            margin-bottom: 16px;
        }
        .sec-box h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .sec-box p {
            font-size: 0.88rem;
            color: var(--tx-muted);
            margin: 0;
        }

        /* 板块12: 资讯与创作动态 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-item {
            background: #ffffff;
            border: 1px solid var(--tx-border);
            border-radius: var(--tx-radius-md);
            padding: 22px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .news-item .date {
            font-size: 0.8rem;
            color: var(--tx-muted);
            margin-bottom: 8px;
            display: block;
        }
        .news-item h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
        }
        .news-item p {
            font-size: 0.88rem;
            color: var(--tx-body);
            margin-bottom: 16px;
        }
        .news-item .read-more {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--tx-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 板块13: 开始使用 - 唯一收口行动区 */
        .final-cta-section {
            background: linear-gradient(135deg, #2b111c 0%, #4a192c 100%);
            color: #ffffff;
            padding: 76px 0;
            border-radius: var(--tx-radius-lg);
            margin: 40px 0;
            text-align: center;
        }
        .final-cta-section h2 {
            color: #ffffff;
            font-size: 2.3rem;
            margin-bottom: 14px;
        }
        .final-cta-section p {
            color: #fce7ec;
            max-width: 650px;
            margin: 0 auto 30px auto;
            font-size: 1.05rem;
        }

        /* 底部固定条 */
        .bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--tx-primary-border);
            padding: 10px 0;
            z-index: 999;
            box-shadow: 0 -4px 16px rgba(0,0,0,0.06);
        }
        .bottom-bar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .bottom-bar-info {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--tx-dark);
            font-weight: 600;
        }

        /* 页脚 */
        .site-footer {
            background: #181a1e;
            color: #a0a6b1;
            padding: 56px 0 90px 0; /* 预留底部bar高度 */
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            color: #ffffff;
            font-size: 1.4rem;
            margin-bottom: 14px;
        }
        .footer-brand p {
            line-height: 1.7;
            font-size: 0.88rem;
            color: #8c93a0;
        }
        .footer-links h5 {
            color: #ffffff;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .footer-links ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links ul li {
            margin-bottom: 8px;
        }
        .footer-links ul li a {
            color: #8c93a0;
        }
        .footer-links ul li a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            border-top: 1px solid #2a2e36;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: #6b7280;
        }

        /* 响应式断点控制 */
        @media (max-width: 1024px) {
            .workflow-timeline, .scenario-grid, .resource-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .preview-grid, .selling-point-grid, .security-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hero-h1 {
                font-size: 2.1rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .preview-grid, .selling-point-grid, .security-grid, .news-grid,
            .workflow-timeline, .scenario-grid, .resource-grid,
            .pitfall-list, .audience-grid, .milestone-flex {
                grid-template-columns: 1fr;
                flex-direction: column;
            }
            .header-bulletins {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .bottom-bar-info {
                font-size: 0.85rem;
            }
        }