/* roulang page: index */
:root {
            --tea-700: #1f4a36;
            --tea-600: #2a5c44;
            --tea-500: #3a7358;
            --gold-400: #d6a44c;
            --gold-500: #c4943a;
            --cream: #faf8f4;
            --ink: #1e2a24;
            --soft: #6e7b74;
            --line: #e5ded4;
            --white: #ffffff;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-soft: 0 2px 12px rgba(15,92,63,0.07);
            --shadow-card: 0 4px 20px rgba(15,92,63,0.09);
            --shadow-lift: 0 8px 30px rgba(15,92,63,0.14);
            --transition: all 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            color: var(--ink);
            background: var(--cream);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        :focus-visible {
            outline: 3px solid var(--gold-400);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(250, 248, 244, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
            transition: box-shadow 0.3s ease;
        }
        .site-header.is-scrolled {
            box-shadow: 0 2px 16px rgba(15,92,63,0.1);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .logo-link {
            font-family: 'Noto Serif SC', serif;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--tea-700);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: var(--transition);
        }
        .logo-link:hover {
            color: var(--tea-500);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-item {
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--ink);
            transition: var(--transition);
            cursor: pointer;
        }
        .nav-item:hover {
            background: rgba(42,92,68,0.08);
            color: var(--tea-600);
        }
        .nav-item.active {
            background: var(--tea-600);
            color: #fff;
            box-shadow: 0 2px 8px rgba(42,92,68,0.25);
        }
        /* Hero */
        .hero-section {
            position: relative;
            padding: 72px 0 80px;
            overflow: hidden;
            background: linear-gradient(160deg, #faf8f4 0%, #f0ece3 55%, #e8e2d5 100%);
        }
        .hero-deco-1 {
            position: absolute;
            top: -120px;
            right: -100px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(214,164,76,0.18) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-deco-2 {
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(42,92,68,0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 56px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-text-wrap {
            padding: 16px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(196,148,58,0.14);
            color: #8a6524;
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 24px;
            margin-bottom: 20px;
            letter-spacing: 0.04em;
        }
        .hero-badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--gold-500);
        }
        .hero-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 2.35rem;
            font-weight: 700;
            color: var(--tea-800);
            line-height: 1.3;
            margin-bottom: 22px;
            letter-spacing: 0.02em;
        }
        .hero-title .accent {
            color: var(--gold-500);
            position: relative;
        }
        .hero-title .accent::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 8px;
            background: rgba(196,148,58,0.25);
            border-radius: 4px;
            z-index: -1;
        }
        .hero-desc {
            font-size: 1.02rem;
            color: #3d4a43;
            max-width: 520px;
            margin-bottom: 32px;
            line-height: 1.85;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--tea-600);
            color: #fff;
            box-shadow: 0 4px 14px rgba(42,92,68,0.3);
        }
        .btn-primary:hover {
            background: var(--tea-700);
            box-shadow: 0 6px 22px rgba(42,92,68,0.38);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(42,92,68,0.3);
        }
        .btn-secondary {
            background: transparent;
            color: var(--tea-600);
            border-color: var(--tea-500);
        }
        .btn-secondary:hover {
            background: rgba(42,92,68,0.08);
            border-color: var(--tea-600);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-gold {
            background: var(--gold-500);
            color: #fff;
            box-shadow: 0 4px 14px rgba(196,148,58,0.32);
        }
        .btn-gold:hover {
            background: #b88935;
            box-shadow: 0 6px 22px rgba(196,148,58,0.4);
            transform: translateY(-2px);
        }
        .btn-gold:active {
            transform: translateY(0);
        }
        .hero-kpi-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            padding-top: 24px;
            border-top: 1px solid rgba(30,42,36,0.12);
        }
        .hero-kpi {
            text-align: left;
        }
        .hero-kpi-num {
            font-family: 'Noto Serif SC', serif;
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--tea-700);
            line-height: 1.2;
        }
        .hero-kpi-label {
            font-size: 0.82rem;
            color: var(--soft);
            margin-top: 4px;
        }
        .hero-image-wrap {
            position: relative;
            transform: translateY(8px);
        }
        .hero-image-inner {
            position: relative;
            clip-path: polygon(4% 0, 100% 0, 100% 96%, 0 100%);
            border-radius: 0 20px 20px 0;
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(15,92,63,0.22);
        }
        .hero-image-inner img {
            width: 100%;
            height: 100%;
            min-height: 380px;
            object-fit: cover;
            border-radius: 0 20px 20px 0;
        }
        .hero-image-badge {
            position: absolute;
            bottom: 28px;
            left: 28px;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(8px);
            padding: 14px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 18px rgba(0,0,0,0.12);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hero-image-badge-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--tea-100);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--tea-600);
        }
        .hero-image-badge-text strong {
            display: block;
            font-size: 0.92rem;
            color: var(--ink);
        }
        .hero-image-badge-text span {
            font-size: 0.78rem;
            color: var(--soft);
        }
        /* 板块通用 */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-deep {
            background: var(--tea-800);
            color: #fff;
        }
        .section-header {
            margin-bottom: 48px;
            max-width: 720px;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--gold-500);
            margin-bottom: 12px;
        }
        .section-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 0.98rem;
            color: var(--soft);
            line-height: 1.8;
        }
        /* 资料目录 */
        .catalog-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .catalog-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }
        .catalog-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card);
            border-color: transparent;
        }
        .catalog-card-image {
            width: 100%;
            height: 170px;
            object-fit: cover;
        }
        .catalog-card-body {
            padding: 18px 20px 22px;
        }
        .catalog-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .catalog-card-desc {
            font-size: 0.86rem;
            color: var(--soft);
            line-height: 1.65;
            margin-bottom: 14px;
        }
        .catalog-card-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--tea-600);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .catalog-card-link:hover {
            color: var(--tea-700);
            gap: 8px;
        }
        /* 价值点 */
        .value-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .value-cards {
            display: grid;
            gap: 16px;
        }
        .value-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: var(--transition);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .value-card:hover {
            box-shadow: var(--shadow-card);
            border-color: transparent;
        }
        .value-card-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--tea-50);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--tea-600);
        }
        .value-card-title {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .value-card-desc {
            font-size: 0.88rem;
            color: var(--soft);
            line-height: 1.7;
        }
        .value-stats-bar {
            background: var(--tea-800);
            border-radius: var(--radius-xl);
            padding: 36px 32px;
            color: #fff;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .value-stat-num {
            font-family: 'Noto Serif SC', serif;
            font-size: 2rem;
            font-weight: 700;
            color: var(--gold-400);
            line-height: 1.2;
        }
        .value-stat-label {
            font-size: 0.84rem;
            color: rgba(255,255,255,0.75);
            margin-top: 6px;
        }
        /* 内容预告 */
        .timeline-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .timeline-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            border: 1px solid var(--line);
            position: relative;
            transition: var(--transition);
        }
        .timeline-card:hover {
            box-shadow: var(--shadow-card);
            border-color: transparent;
            transform: translateY(-3px);
        }
        .timeline-date {
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--gold-500);
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }
        .timeline-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .timeline-desc {
            font-size: 0.87rem;
            color: var(--soft);
            line-height: 1.7;
        }
        /* 资讯区 */
        .news-layout {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 32px;
        }
        .news-list {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            overflow: hidden;
        }
        .news-item {
            display: block;
            padding: 20px 24px;
            border-bottom: 1px solid #f0ebe2;
            transition: var(--transition);
            cursor: pointer;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background: #fcfaf7;
        }
        .news-item-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--gold-500);
            background: rgba(196,148,58,0.12);
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
        }
        .news-item-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .news-item-title:hover {
            color: var(--tea-600);
        }
        .news-item-meta {
            font-size: 0.78rem;
            color: #a89e90;
        }
        .news-recommend {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-reco-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--line);
            transition: var(--transition);
            cursor: pointer;
        }
        .news-reco-card:hover {
            box-shadow: var(--shadow-card);
            border-color: transparent;
            transform: translateY(-3px);
        }
        .news-reco-image {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }
        .news-reco-body {
            padding: 16px 20px 20px;
        }
        .news-reco-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .news-reco-desc {
            font-size: 0.82rem;
            color: var(--soft);
            line-height: 1.6;
        }
        /* 场景演示 */
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .scene-steps {
            display: grid;
            gap: 16px;
        }
        .scene-step {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            background: #fff;
            padding: 20px 22px;
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            transition: var(--transition);
        }
        .scene-step:hover {
            box-shadow: var(--shadow-card);
            border-color: transparent;
        }
        .scene-step-num {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--tea-600);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .scene-step-title {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 5px;
        }
        .scene-step-desc {
            font-size: 0.86rem;
            color: var(--soft);
            line-height: 1.7;
        }
        /* 新手入门 */
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: guide;
        }
        .guide-step {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            border: 1px solid var(--line);
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .guide-step:hover {
            box-shadow: var(--shadow-card);
            border-color: transparent;
            transform: translateY(-4px);
        }
        .guide-step-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 16px;
            background: var(--tea-50);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--tea-600);
        }
        .guide-step-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .guide-step-desc {
            font-size: 0.84rem;
            color: var(--soft);
            line-height: 1.65;
        }
        /* 版本更新 */
        .changelog-list {
            max-width: 720px;
            margin: 0 auto;
        }
        .changelog-item {
            display: flex;
            gap: 20px;
            padding: 22px 0;
            border-bottom: 1px solid var(--line);
        }
        .changelog-item:last-child {
            border-bottom: none;
        }
        .changelog-version {
            flex-shrink: 0;
            width: 64px;
            height: 32px;
            background: var(--tea-100);
            color: var(--tea-700);
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .changelog-title {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 4px;
        }
        .changelog-desc {
            font-size: 0.86rem;
            color: var(--soft);
            line-height: 1.7;
        }
        /* 留资下载 */
        .download-section {
            position: relative;
            padding: 80px 0;
            background-size: cover;
            background-position: center;
        }
        .download-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14,38,28,0.88) 0%, rgba(31,74,54,0.78) 100%);
            border-radius: inherit;
        }
        .download-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .download-info-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .download-info-desc {
            color: rgba(255,255,255,0.8);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .download-benefits {
            list-style: none;
            display: grid;
            gap: 8px;
        }
        .download-benefits li {
            color: rgba(255,255,255,0.88);
            font-size: 0.88rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .download-benefits li::before {
            content: '✓';
            color: var(--gold-400);
            font-weight: 700;
        }
        .download-form-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            box-shadow: 0 16px 48px rgba(0,0,0,0.18);
        }
        .download-form-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .download-form-desc {
            font-size: 0.85rem;
            color: var(--soft);
            margin-bottom: 22px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .form-input,
        .form-select {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid var(--line);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--ink);
            background: #fdfcf9;
            transition: var(--transition);
        }
        .form-input:focus,
        .form-select:focus {
            border-color: var(--tea-500);
            box-shadow: 0 0 0 3px rgba(58,115,88,0.12);
            outline: none;
            background: #fff;
        }
        .form-submit {
            width: 100%;
            padding: 14px;
            background: var(--tea-600);
            color: #fff;
            border: none;
            border-radius: 28px;
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            letter-spacing: 0.02em;
        }
        .form-submit:hover {
            background: var(--tea-700);
            box-shadow: 0 6px 18px rgba(42,92,68,0.3);
        }
        .form-submit:active {
            transform: translateY(0);
        }
        .form-hint {
            font-size: 0.75rem;
            color: #a89e90;
            text-align: center;
            margin-top: 12px;
        }
        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--tea-300);
            box-shadow: var(--shadow-soft);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--ink);
            gap: 16px;
            user-select: none;
        }
        .faq-question:hover {
            color: var(--tea-600);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--tea-50);
            color: var(--tea-600);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .faq-answer {
            padding: 0 22px 20px;
            font-size: 0.88rem;
            color: var(--soft);
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--tea-200);
        }
        /* 底部 CTA */
        .cta-footer {
            background: var(--tea-800);
            color: #fff;
            text-align: center;
            padding: 72px 0;
        }
        .cta-footer-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-footer-desc {
            color: rgba(255,255,255,0.78);
            font-size: 0.98rem;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        /* 页脚 */
        .site-footer {
            background: #0e261c;
            color: rgba(255,255,255,0.72);
            padding: 48px 0 32px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-family: 'Noto Serif SC', serif;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            font-size: 0.86rem;
            line-height: 1.75;
            max-width: 400px;
        }
        .footer-link-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-link-item {
            display: block;
            font-size: 0.84rem;
            color: rgba(255,255,255,0.6);
            margin-bottom: 6px;
            transition: var(--transition);
        }
        .footer-link-item:hover {
            color: var(--gold-400);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.5);
        }
        /* 响应式 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-image-inner img {
                min-height: 280px;
            }
            .catalog-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .value-grid {
                grid-template-columns: 1fr;
            }
            .timeline-wrap {
                grid-template-columns: 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .guide-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .download-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-inner {
                height: 60px;
            }
            .logo-link {
                font-size: 1rem;
            }
            .nav-item {
                padding: 6px 14px;
                font-size: 0.85rem;
            }
            .hero-section {
                padding: 48px 0 56px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .catalog-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .catalog-card-image {
                height: 130px;
            }
            .guide-steps {
                grid-template-columns: 1fr;
            }
            .hero-kpi-row {
                gap: 16px;
            }
            .hero-kpi-num {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .catalog-grid {
                grid-template-columns: 1fr;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn {
                width: 100%;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .value-stats-bar {
                grid-template-columns: 1fr;
                padding: 24px 20px;
            }
            .hero-image-inner img {
                min-height: 220px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }