/* roulang page: index */
:root {
            --primary: #d97706;
            --primary-light: #f59e0b;
            --primary-soft: #fef3c7;
            --primary-dark: #b45309;
            --accent: #0f172a;
            --accent-light: #1e293b;
            --accent-muted: #334155;
            --text-main: #0f172a;
            --text-secondary: #475569;
            --text-light: #64748b;
            --bg-page: #f8fafc;
            --bg-card: #ffffff;
            --bg-subtle: #f1f5f9;
            --border-color: #e2e8f0;
            --border-hover: #cbd5e1;
            --sidebar-width: 280px;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-page);
            color: var(--text-main);
            line-height: 1.65;
            display: flex;
            min-height: 100vh;
        }

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

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

        /* 左侧固定竖向导航 */
        .sidebar-nav {
            width: var(--sidebar-width);
            background-color: #0b1120;
            color: #e2e8f0;
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0;
            display: flex;
            flex-direction: column;
            z-index: 1000;
            box-shadow: 2px 0 12px rgba(0, 0, 0, 0.2);
            overflow-y: auto;
        }

        .sidebar-brand {
            padding: 32px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .brand-badge {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 800;
            font-size: 20px;
            box-shadow: 0 4px 10px rgba(217, 119, 6, 0.3);
            flex-shrink: 0;
        }

        .brand-text h2 {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #ffffff;
        }

        .brand-text p {
            font-size: 11px;
            color: #94a3b8;
            margin-top: 2px;
            letter-spacing: 0.04em;
        }

        .sidebar-menu {
            padding: 24px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: #64748b;
            padding: 8px 12px;
            margin-top: 12px;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: #cbd5e1;
        }

        .nav-link svg {
            width: 18px;
            height: 18px;
            stroke-width: 2;
            flex-shrink: 0;
        }

        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.06);
            color: #ffffff;
        }

        .nav-link.active {
            background-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
        }

        .sidebar-dock {
            padding: 20px 20px 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            background-color: rgba(0, 0, 0, 0.2);
        }

        .dock-status {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: #94a3b8;
            margin-bottom: 12px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #10b981;
            box-shadow: 0 0 8px #10b981;
        }

        .dock-btn {
            display: block;
            width: 100%;
            padding: 10px;
            background-color: rgba(255, 255, 255, 0.08);
            color: #f1f5f9;
            text-align: center;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .dock-btn:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffffff;
        }

        /* 移动端顶部顶栏（默认PC隐藏） */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background-color: #0b1120;
            color: #ffffff;
            z-index: 1001;
            padding: 0 20px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
        }

        /* 主工作内容区 */
        .site-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .content-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        /* 通用板块结构规范 */
        .warehouse-section {
            padding: 72px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .warehouse-section:nth-child(even) {
            background-color: #ffffff;
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--primary-dark);
            background-color: var(--primary-soft);
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.01em;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 860px;
        }

        /* 板块1：Hero 众筹预定扩容主屏 */
        .sec-hero {
            background: linear-gradient(180deg, #ffffff 0%, var(--bg-subtle) 100%);
            padding: 56px 0 72px;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-bento {
            display: grid;
            grid-template-columns: 1.25fr 0.95fr;
            gap: 36px;
            align-items: center;
        }

        .hero-lead h1 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .hero-lead p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 28px;
        }

        .hero-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-bottom: 32px;
        }

        .hero-feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-light);
        }

        .hero-feature-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        .hero-progress-card {
            background-color: #ffffff;
            border-radius: var(--radius-xl);
            padding: 32px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            position: relative;
        }

        .progress-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }

        .progress-phase {
            font-size: 13px;
            font-weight: 700;
            color: #d97706;
            background-color: #fef3c7;
            padding: 4px 12px;
            border-radius: 20px;
        }

        .progress-ring-container {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-bottom: 28px;
        }

        .ring-graphic {
            position: relative;
            width: 120px;
            height: 120px;
            flex-shrink: 0;
        }

        .ring-graphic svg {
            width: 100%;
            height: 100%;
            transform: rotate(-90deg);
        }

        .ring-bg {
            fill: none;
            stroke: #f1f5f9;
            stroke-width: 9;
        }

        .ring-bar {
            fill: none;
            stroke: var(--primary);
            stroke-width: 9;
            stroke-linecap: round;
            stroke-dasharray: 283;
            stroke-dashoffset: 38; /* 86.5% */
            transition: stroke-dashoffset 1s ease-out;
        }

        .ring-text {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .ring-percent {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-main);
            display: block;
            line-height: 1;
        }

        .ring-sub {
            font-size: 11px;
            color: var(--text-light);
            margin-top: 4px;
        }

        .progress-stat-rows {
            flex: 1;
        }

        .stat-item {
            margin-bottom: 12px;
        }

        .stat-item span {
            display: block;
            font-size: 12px;
            color: var(--text-light);
        }

        .stat-item strong {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
        }

        .tiers-preview {
            border-top: 1px dashed var(--border-color);
            padding-top: 20px;
            margin-bottom: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .tier-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--bg-subtle);
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 13px;
        }

        .tier-row b {
            color: var(--text-main);
        }

        .tier-badge {
            font-size: 11px;
            color: #059669;
            background-color: #d1fae5;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        .btn-primary {
            display: inline-block;
            width: 100%;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            color: #ffffff;
            font-weight: 700;
            font-size: 15px;
            padding: 14px 20px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            opacity: 0.95;
            transform: translateY(-1px);
        }

        /* 板块2：卖点三连 */
        .grid-trio {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .trio-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .trio-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }

        .trio-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background-color: var(--primary-soft);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .trio-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .trio-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* 板块3：入口矩阵 */
        .portal-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .portal-item {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            transition: var(--transition);
        }

        .portal-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            background-color: #fffdfa;
        }

        .portal-badge {
            font-size: 11px;
            color: var(--primary-dark);
            font-weight: 700;
        }

        .portal-heading {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
        }

        .portal-detail {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.55;
        }

        /* 板块4：最新发布（出入库快讯与库位排期） */
        .feed-container {
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
        }

        .feed-item {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            gap: 20px;
        }

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

        .feed-meta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .feed-chip {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 8px;
            border-radius: 4px;
            background-color: var(--bg-subtle);
            color: var(--text-secondary);
        }

        .feed-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }

        .feed-summary {
            font-size: 13px;
            color: var(--text-light);
            max-width: 520px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .feed-time {
            font-size: 12px;
            color: var(--text-light);
            flex-shrink: 0;
        }

        /* 板块5：热门专题集群 */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .topic-box {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .topic-header-bar {
            height: 6px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
        }

        .topic-content {
            padding: 28px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .topic-sub {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .topic-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .topic-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 20px;
            flex: 1;
        }

        .topic-specs {
            list-style: none;
            padding-top: 14px;
            border-top: 1px solid var(--bg-subtle);
            margin-bottom: 18px;
        }

        .topic-specs li {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .topic-specs li::before {
            content: "•";
            color: var(--primary);
            font-weight: bold;
        }

        /* 板块6：资讯列表 */
        .news-columns {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .news-card {
            background-color: #ffffff;
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: var(--transition);
        }

        .news-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-hover);
        }

        .news-date {
            font-size: 12px;
            color: var(--text-light);
        }

        .news-h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
        }

        .news-paragraph {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* 板块7：运行数据指标 */
        .metrics-bar {
            background-color: var(--accent);
            color: #ffffff;
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .metric-cell strong {
            display: block;
            font-size: 38px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1.1;
            margin-bottom: 8px;
            font-feature-settings: "tnum";
        }

        .metric-cell h4 {
            font-size: 15px;
            font-weight: 600;
            color: #e2e8f0;
            margin-bottom: 6px;
        }

        .metric-cell p {
            font-size: 12px;
            color: #94a3b8;
            line-height: 1.5;
        }

        /* 板块8：误区澄清与对比 */
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background-color: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .comparison-table th, 
        .comparison-table td {
            padding: 18px 24px;
            font-size: 14px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            background-color: var(--bg-subtle);
            font-weight: 700;
            color: var(--text-main);
        }

        .comparison-table td:nth-child(2) {
            color: #ef4444;
            background-color: #fffaf0;
        }

        .comparison-table td:nth-child(3) {
            color: #059669;
            background-color: #f0fdf4;
            font-weight: 600;
        }

        /* 板块9：适用产业场景矩阵 */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background-color: #ffffff;
            padding: 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .scenario-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .scenario-tag {
            font-size: 11px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .scenario-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .scenario-text {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 板块10：爆款仓配单元清单 */
        .hot-units-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hot-unit-row {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 140px;
            align-items: center;
            gap: 20px;
            transition: var(--transition);
        }

        .hot-unit-row:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        .unit-info h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .unit-info p {
            font-size: 13px;
            color: var(--text-light);
        }

        .unit-spec {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .unit-status {
            font-size: 13px;
            color: #d97706;
            font-weight: 600;
        }

        .btn-outline-sm {
            display: inline-block;
            text-align: center;
            padding: 8px 16px;
            border: 1px solid var(--primary);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            border-radius: 6px;
        }

        .btn-outline-sm:hover {
            background-color: var(--primary);
            color: #ffffff;
        }

        /* 板块11：客户口碑与企业声音 */
        .reviews-wall {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-quote {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
            font-style: normal;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 16px;
            border-top: 1px solid var(--bg-subtle);
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }

        .author-meta strong {
            display: block;
            font-size: 14px;
            color: var(--text-main);
        }

        .author-meta span {
            font-size: 12px;
            color: var(--text-light);
        }

        /* 板块12：联系入口与入驻通道 */
        .sec-contact {
            background: linear-gradient(135deg, #0b1120 0%, #1e293b 100%);
            color: #ffffff;
            border-bottom: none;
        }

        .contact-box {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .contact-box .section-title {
            color: #ffffff;
        }

        .contact-box .section-desc {
            color: #94a3b8;
        }

        .contact-info-list {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .contact-info-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: #cbd5e1;
        }

        .contact-info-item svg {
            color: var(--primary-light);
            flex-shrink: 0;
        }

        .contact-card-glass {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-xl);
            padding: 32px;
            backdrop-filter: blur(10px);
        }

        .contact-card-glass h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: #ffffff;
        }

        .contact-card-glass p {
            font-size: 13px;
            color: #94a3b8;
            margin-bottom: 20px;
        }

        .form-row {
            margin-bottom: 16px;
        }

        .form-row input,
        .form-row select {
            width: 100%;
            padding: 12px 14px;
            background-color: rgba(15, 23, 42, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 6px;
            color: #ffffff;
            font-size: 14px;
            outline: none;
        }

        .form-row input:focus,
        .form-row select:focus {
            border-color: var(--primary-light);
        }

        /* 全局统一页脚 */
        .site-footer {
            background-color: #060911;
            color: #94a3b8;
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand h4 {
            color: #ffffff;
            font-size: 18px;
            margin-bottom: 12px;
        }

        .footer-brand p {
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .footer-col h5 {
            color: #ffffff;
            font-size: 14px;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
        }

        /* 响应式断点控制 */
        @media (max-width: 1024px) {
            .grid-trio,
            .topics-grid,
            .reviews-wall {
                grid-template-columns: 1fr 1fr;
            }
            .portal-grid,
            .scenario-grid {
                grid-template-columns: 1fr 1fr;
            }
            .metrics-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .hero-bento {
                grid-template-columns: 1fr;
            }
            .contact-box {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 900px) {
            .sidebar-nav {
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            .site-wrapper {
                margin-left: 0;
                padding-top: 64px;
            }
            .content-container {
                padding: 0 20px;
            }
            .warehouse-section {
                padding: 48px 0;
            }
            .news-columns {
                grid-template-columns: 1fr;
            }
            .hot-unit-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 640px) {
            .grid-trio,
            .topics-grid,
            .reviews-wall,
            .portal-grid,
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .metrics-bar {
                grid-template-columns: 1fr;
            }
            .hero-lead h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .hero-features {
                grid-template-columns: 1fr;
            }
            .feed-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .feed-summary {
                max-width: 100%;
                white-space: normal;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }