/* roulang page: index */
:root {
      --primary: #0F382C;
      --primary-light: #164e3e;
      --primary-dark: #09241c;
      --accent: #10B981;
      --accent-hover: #059669;
      --highlight: #F59E0B;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0A0F0D;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08);
      --shadow-lg: 0 12px 24px -8px rgba(15, 56, 44, 0.12);
      --shadow-dark: 0 20px 25px -5px rgba(0,0,0,0.5);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      --container-width: 1180px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-muted);
      line-height: 1.6;
      font-size: 15px;
      overflow-x: hidden;
    }

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

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

    button, input, textarea, select {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部通栏 */
    .top-bar {
      background: var(--primary-dark);
      color: #94A3B8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 8px var(--accent);
    }
    .top-contacts {
      display: flex;
      gap: 20px;
    }

    /* 主导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
      transition: var(--transition);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
    }
    .logo-badge {
      background: var(--primary);
      color: #fff;
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
      padding: 8px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }
    .btn-primary {
      background: var(--accent);
      color: #FFFFFF;
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--primary);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      background: #F1F5F9;
      border-color: #CBD5E1;
      transform: translateY(-2px);
    }
    .btn-dark {
      background: var(--primary);
      color: #FFFFFF;
    }
    .btn-dark:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }
    .btn-lg {
      padding: 14px 28px;
      font-size: 16px;
      border-radius: 8px;
    }

    /* 区域排版通则 */
    .section {
      padding: 88px 0;
      position: relative;
    }
    .section-alt {
      background-color: #FFFFFF;
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #94A3B8;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
      background: rgba(16, 185, 129, 0.1);
      padding: 4px 12px;
      border-radius: 30px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-light);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 板块 1: 斜切旗舰 Hero */
    .hero-section {
      position: relative;
      background: var(--primary-dark);
      color: #FFFFFF;
      overflow: hidden;
      padding: 90px 0 120px;
      border-bottom: 6px solid var(--accent);
    }
    .hero-bg-cover {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.22;
      mix-blend-mode: luminosity;
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .hero-content h1 span {
      color: var(--accent);
    }
    .hero-intro {
      font-size: 17px;
      line-height: 1.75;
      color: #CBD5E1;
      margin-bottom: 32px;
      max-width: 620px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-stats-row {
      display: flex;
      gap: 32px;
      border-top: 1px solid rgba(255,255,255,0.12);
      padding-top: 24px;
    }
    .hero-stat-item strong {
      display: block;
      font-size: 24px;
      font-weight: 700;
      color: #FFFFFF;
    }
    .hero-stat-item span {
      font-size: 13px;
      color: #94A3B8;
    }
    .hero-card-preview {
      background: rgba(15, 23, 42, 0.7);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-dark);
    }
    .console-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding-bottom: 14px;
      margin-bottom: 18px;
    }
    .console-title {
      font-size: 14px;
      font-weight: 600;
      color: #E2E8F0;
    }
    .console-badge {
      font-size: 11px;
      background: rgba(16, 185, 129, 0.2);
      color: var(--accent);
      padding: 2px 8px;
      border-radius: 4px;
    }
    .console-live-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px 0;
      border-bottom: 1px solid rgba(255,255,255,0.06);
      font-size: 13px;
    }
    .live-meta {
      display: flex;
      flex-direction: column;
    }
    .live-title {
      color: #F8FAFC;
      font-weight: 500;
    }
    .live-sub {
      color: #94A3B8;
      font-size: 11px;
    }
    .live-tag {
      background: rgba(245, 158, 11, 0.2);
      color: var(--highlight);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 11px;
    }

    /* 板块 2: 底层架构介绍 */
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .arch-image-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .arch-feature-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .arch-feature-item {
      display: flex;
      gap: 16px;
    }
    .arch-icon {
      flex-shrink: 0;
      width: 44px;
      height: 44px;
      border-radius: var(--radius-md);
      background: rgba(15, 56, 44, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .arch-text h4 {
      font-size: 18px;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .arch-text p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.6;
    }
    .param-pill {
      display: inline-block;
      margin-top: 14px;
      background: #ECFDF5;
      border: 1px solid #A7F3D0;
      color: #065F46;
      font-size: 13px;
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }

    /* 板块 3: 核心优势矩阵 */
    .grid-3x2 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .card-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .card-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #CBD5E1;
    }
    .card-item-icon {
      width: 48px;
      height: 48px;
      border-radius: 8px;
      background: #F0FDF4;
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 20px;
    }
    .card-item h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .card-item p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.65;
    }

    /* 板块 4: 热门产品方案 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .product-card.featured {
      border: 2px solid var(--accent);
      box-shadow: var(--shadow-lg);
    }
    .featured-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: 20px;
      letter-spacing: 0.5px;
    }
    .product-tag {
      font-size: 13px;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .product-card h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .product-card p {
      font-size: 14px;
      color: var(--text-light);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .feature-points {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .feature-points li {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 12px;
      position: relative;
      padding-left: 22px;
    }
    .feature-points li::before {
      content: '✓';
      position: absolute;
      left: 0;
      top: 0;
      color: var(--accent);
      font-weight: 900;
    }

    /* 板块 5: 深色理念区 */
    .philosophy-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .phil-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 36px;
    }
    .phil-box h3 {
      font-size: 22px;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .phil-box p {
      font-size: 15px;
      line-height: 1.7;
      color: #94A3B8;
      margin-bottom: 20px;
    }

    /* 板块 6: 全场景演示 Tab 体验 */
    .scenario-container {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .scenario-nav {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      background: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
    }
    .scenario-tab {
      padding: 18px 20px;
      text-align: center;
      font-weight: 600;
      font-size: 15px;
      color: var(--text-light);
      cursor: pointer;
      transition: var(--transition);
      background: transparent;
      border: none;
    }
    .scenario-tab.active {
      background: #FFFFFF;
      color: var(--primary);
      border-bottom: 3px solid var(--accent);
    }
    .scenario-body {
      padding: 40px;
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 36px;
      align-items: center;
    }
    .scenario-detail h3 {
      font-size: 22px;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .scenario-detail p {
      font-size: 15px;
      color: var(--text-light);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .step-flow {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .step-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .step-num {
      width: 24px;
      height: 24px;
      background: var(--primary);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 700;
    }

    /* 板块 7: 关键业务数据统计 */
    .metric-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .metric-num {
      font-size: 38px;
      font-weight: 900;
      color: var(--accent);
      margin-bottom: 8px;
      line-height: 1.1;
      font-feature-settings: "tnum";
    }
    .metric-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-sub {
      font-size: 13px;
      color: var(--text-light);
    }

    /* 板块 8: 行业对比差异矩阵 */
    .compare-table-wrapper {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .compare-table th {
      background: #F8FAFC;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table th.highlight-col {
      background: #ECFDF5;
      color: var(--primary);
    }
    .compare-table td.highlight-col {
      background: #F0FDF4;
      font-weight: 600;
      color: var(--primary);
    }

    /* 板块 9: 客户标杆实录 */
    .case-strip {
      display: flex;
      flex-direction: column;
      gap: 40px;
    }
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1fr;
      box-shadow: var(--shadow-sm);
    }
    .case-card.reverse {
      direction: rtl;
    }
    .case-card.reverse .case-content {
      direction: ltr;
    }
    .case-image {
      height: 100%;
      min-height: 320px;
      object-fit: cover;
      width: 100%;
    }
    .case-content {
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--highlight);
      text-transform: uppercase;
      margin-bottom: 10px;
      letter-spacing: 0.5px;
    }
    .case-content h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.4;
    }
    .case-content p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .case-stats {
      display: flex;
      gap: 28px;
    }
    .case-stat strong {
      display: block;
      font-size: 20px;
      color: var(--primary);
      font-weight: 800;
    }
    .case-stat span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 板块 10: 社会认同与真实评价 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 14px;
      margin-bottom: 14px;
    }
    .testi-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }
    .author-info h5 {
      font-size: 14px;
      color: var(--text-main);
      font-weight: 700;
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 板块 11: 行业资讯与技术证据 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .news-thumb {
      height: 190px;
      object-fit: cover;
      width: 100%;
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 12px;
    }
    .news-badge {
      color: var(--accent);
      font-weight: 600;
      background: rgba(16, 185, 129, 0.1);
      padding: 2px 8px;
      border-radius: 4px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-desc {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.6;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .news-action {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }

    /* 板块 12: 异议拆解与 FAQ 手风琴 */
    .faq-wrapper {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-header {
      padding: 20px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      user-select: none;
    }
    .faq-header:hover {
      background: #F8FAFC;
    }
    .faq-chevron {
      transition: transform 0.3s ease;
      font-size: 18px;
      color: var(--text-light);
    }
    .faq-content {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.7;
      display: none;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .faq-item.active .faq-content {
      display: block;
    }
    .faq-item.active .faq-chevron {
      transform: rotate(180deg);
      color: var(--accent);
    }

    /* 板块 13: 服务保障条与底部强转化区 */
    .conversion-box {
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #FFFFFF;
      box-shadow: var(--shadow-dark);
      position: relative;
      overflow: hidden;
    }
    .conversion-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .conversion-content h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: #FFFFFF;
    }
    .conversion-content p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.7;
      margin-bottom: 28px;
    }
    .assurance-pills {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .assurance-pill-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .conv-form {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 32px;
      color: var(--text-main);
    }
    .conv-form h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 20px;
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-muted);
    }
    .form-input {
      width: 100%;
      padding: 12px 14px;
      font-size: 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      outline: none;
      transition: var(--transition);
    }
    .form-input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }

    /* 页脚 */
    .site-footer {
      background: #061510;
      color: #94A3B8;
      padding: 72px 0 32px;
      border-top: 1px solid rgba(255,255,255,0.08);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-brand h3 {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: #64748B;
      margin-bottom: 20px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-contact-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
      margin-bottom: 14px;
    }
    .footer-contact-item span {
      font-size: 12px;
      color: #64748B;
    }
    .footer-contact-item strong {
      color: #E2E8F0;
      font-weight: 600;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 28px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #64748B;
    }

    /* 移动端常驻转化条 */
    .mobile-sticky-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255,255,255,0.12);
      padding: 12px 20px;
      z-index: 99;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-grid, .philosophy-grid, .conversion-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .grid-3x2, .product-grid, .metric-strip, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-card, .case-card.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .case-card.reverse .case-content {
        direction: ltr;
      }
      .scenario-body {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .main-nav {
        display: none;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .hero-section {
        padding: 56px 0 80px;
      }
      .section {
        padding: 56px 0;
      }
      .section-title {
        font-size: 26px;
      }
      .grid-3x2, .product-grid, .metric-strip, .testimonial-grid, .news-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .scenario-nav {
        grid-template-columns: repeat(2, 1fr);
      }
      .mobile-sticky-bar {
        display: block;
      }
      body {
        padding-bottom: 64px;
      }
    }