/* roulang page: index */
:root {
      --primary: #0D9488;
      --primary-dark: #0F766E;
      --primary-light: #CCFBF1;
      --accent: #F59E0B;
      --dark-slate: #0B132B;
      --dark-card: #1C2541;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --bg-base: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-soft: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
      --shadow-hover: 0 20px 30px -10px rgba(13, 148, 136, 0.15), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
      --container-width: 1240px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    /* 顶部通告栏与双行导航 */
    .top-announcement {
      background-color: var(--dark-slate);
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 7px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .announcement-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .badge-chip {
      background-color: rgba(13, 148, 136, 0.2);
      color: #2DD4BF;
      padding: 2px 8px;
      border-radius: 9999px;
      font-weight: 500;
      margin-right: 8px;
    }
    header.main-header {
      background-color: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 999;
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      fill: var(--primary);
    }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
      list-style: none;
    }
    .nav-links li a {
      font-size: 0.9375rem;
      font-weight: 500;
      color: #334155;
      padding: 6px 0;
      position: relative;
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
    }
    .nav-links li a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 0.9375rem;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid transparent;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(13, 148, 136, 0.35);
    }
    .btn-secondary {
      background-color: #FFFFFF;
      color: var(--text-main);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .btn-dark {
      background-color: var(--dark-slate);
      color: #FFFFFF;
    }
    .btn-dark:hover {
      background-color: #020617;
      transform: translateY(-2px);
    }

    /* 板块排版与基础样式 */
    section {
      padding: 86px 0;
      position: relative;
    }
    .section-light {
      background-color: var(--bg-white);
    }
    .section-tint {
      background-color: var(--bg-base);
    }
    .section-dark {
      background-color: var(--dark-slate);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 48px;
      text-align: left;
    }
    .section-header.center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 4px 12px;
      border-radius: 9999px;
      margin-bottom: 14px;
    }
    .section-tag.dark-tag {
      background-color: rgba(13, 148, 136, 0.25);
      color: #2DD4BF;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      line-height: 1.28;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      line-height: 1.68;
      color: var(--text-muted);
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* Hero Section (选型对比架构 + 推荐档前置高亮) */
    .hero-section {
      padding: 60px 0 90px;
      background: linear-gradient(180deg, #F0FDFA 0%, #F8FAFC 100%);
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1.08fr;
      gap: 52px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -1px;
      color: var(--text-main);
      margin-bottom: 20px;
    }
    .hero-content h1 span {
      color: var(--primary);
      position: relative;
    }
    .hero-p {
      font-size: 1.1rem;
      color: #475569;
      line-height: 1.75;
      margin-bottom: 30px;
    }
    .hero-meta-points {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      margin-bottom: 32px;
    }
    .meta-point-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      font-weight: 600;
      color: #334155;
    }
    .meta-point-item svg {
      width: 18px;
      height: 18px;
      fill: var(--primary);
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
    }

    /* Hero 右侧对比选型卡组 */
    .hero-pricing-matrix {
      display: grid;
      grid-template-columns: 1fr 1.12fr;
      gap: 16px;
      position: relative;
    }
    .matrix-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      box-shadow: var(--shadow-soft);
      position: relative;
    }
    .matrix-card.featured-card {
      background: #FFFFFF;
      border: 2px solid var(--primary);
      box-shadow: 0 16px 36px -10px rgba(13, 148, 136, 0.28);
      transform: translateY(-8px);
    }
    .popular-ribbon {
      position: absolute;
      top: -12px;
      right: 20px;
      background: linear-gradient(135deg, var(--accent) 0%, #D97706 100%);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 9999px;
      letter-spacing: 0.5px;
    }
    .matrix-tier-name {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .matrix-tier-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      min-height: 38px;
    }
    .matrix-price {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 18px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .matrix-price span {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 400;
    }
    .matrix-specs {
      list-style: none;
      margin-bottom: 22px;
      font-size: 0.84rem;
      color: #334155;
    }
    .matrix-specs li {
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .matrix-specs li svg {
      width: 14px;
      height: 14px;
      flex-shrink: 0;
      fill: var(--primary);
    }

    /* 板块 1: 内容日历 */
    .calendar-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .calendar-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-soft);
      border-top: 4px solid var(--primary);
    }
    .cal-date-label {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
      text-transform: uppercase;
    }
    .cal-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .cal-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 2: 热门专题 (标签矩阵与技术参数) */
    .topics-grid {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .topic-image-holder {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      border: 1px solid var(--border-color);
    }
    .topic-image-holder img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .topic-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 24px;
    }
    .cloud-chip {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      border-radius: 9999px;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
      transition: all 0.2s ease;
    }
    .cloud-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .specs-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 16px;
      background: #FFFFFF;
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    .specs-table th, .specs-table td {
      padding: 12px 16px;
      font-size: 0.875rem;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
    }
    .specs-table th {
      background: #F1F5F9;
      color: #334155;
      font-weight: 700;
    }

    /* 板块 3: 观点解读 (专家深度分析) */
    .opinion-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .opinion-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px 26px;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .quote-badge {
      font-size: 2.4rem;
      line-height: 1;
      color: var(--primary);
      margin-bottom: 12px;
      font-family: Georgia, serif;
    }
    .opinion-text {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .opinion-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;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info h4 {
      font-size: 0.9375rem;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 0.775rem;
      color: var(--text-muted);
    }

    /* 板块 4: 资讯动态 (资讯列表与技术动向) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .news-card-img {
      height: 180px;
      overflow: hidden;
    }
    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-card-img img {
      transform: scale(1.05);
    }
    .news-card-body {
      padding: 22px;
    }
    .news-date {
      font-size: 0.775rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .news-excerpt {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    /* 板块 5: 媒体精选 (横向滑动轨道感卡片) */
    .media-scroll-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .media-item-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-soft);
    }
    .media-type-tag {
      font-size: 0.725rem;
      background: #EEF2F6;
      color: #475569;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 10px;
    }
    .media-headline {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .media-digest {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 板块 6: 数据分析指标看板 (深色科技流) */
    .data-metrics-board {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-bottom: 40px;
    }
    .metric-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      backdrop-filter: blur(8px);
    }
    .metric-value {
      font-size: 2.75rem;
      font-weight: 800;
      color: #2DD4BF;
      letter-spacing: -1px;
      margin-bottom: 8px;
      display: flex;
      align-items: baseline;
      gap: 2px;
    }
    .metric-unit {
      font-size: 1.25rem;
      color: #94A3B8;
      font-weight: 500;
    }
    .metric-label {
      font-size: 1.05rem;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 8px;
    }
    .metric-subtext {
      font-size: 0.8125rem;
      color: #94A3B8;
      line-height: 1.5;
    }

    /* 板块 7: 传统记录 vs AI会议助手：结果对比看板 */
    .comparison-table-wrapper {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-soft);
    }
    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comp-table th, .comp-table td {
      padding: 20px 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .comp-table th {
      background-color: #F8FAFC;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .comp-table th.col-highlight {
      background-color: var(--primary-light);
      color: var(--primary-dark);
      font-size: 1.05rem;
    }
    .comp-dim {
      font-weight: 700;
      color: #334155;
      font-size: 0.9375rem;
      width: 22%;
    }
    .comp-traditional {
      color: #64748B;
      font-size: 0.9rem;
      width: 39%;
      background: #FAFAFA;
    }
    .comp-ai {
      color: var(--text-main);
      font-size: 0.925rem;
      width: 39%;
      background: #FFFFFF;
      font-weight: 600;
    }
    .comp-table tr:hover td {
      background-color: #F0FDFA;
    }

    /* 板块 8: 架构技术理念与链路 (全链路演进) */
    .arch-flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .arch-step-node {
      background: #111C44;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
    }
    .arch-step-number {
      font-size: 0.75rem;
      font-weight: 800;
      color: var(--primary);
      background: rgba(13, 148, 136, 0.2);
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
    }
    .arch-step-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 8px;
    }
    .arch-step-desc {
      font-size: 0.8125rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块 9: 典型应用场景矩阵 (4 大行业卡片) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .scenario-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background-color: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
    }
    .scenario-icon-box svg {
      width: 24px;
      height: 24px;
      fill: var(--primary);
    }
    .scenario-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .scenario-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.62;
      margin-bottom: 16px;
    }
    .scenario-stats {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--primary);
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
    }

    /* 板块 10: 演进历程与里程碑 (Milestones) */
    .milestones-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .milestone-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      box-shadow: var(--shadow-soft);
    }
    .milestone-year {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .milestone-title {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .milestone-detail {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 板块 11: 平台保障体系 (Platform Trust) */
    .trust-badges-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-bottom: 48px;
    }
    .trust-badge-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-soft);
    }
    .trust-badge-icon {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--primary-light);
      margin: 0 auto 16px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .trust-badge-icon svg {
      width: 26px;
      height: 26px;
      fill: var(--primary);
    }
    .trust-badge-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .trust-badge-card p {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 板块 12: 核心疑问与解答 (FAQ 手风琴) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-soft);
      transition: all 0.25s ease;
    }
    .faq-header {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .faq-header:hover {
      color: var(--primary);
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      line-height: 1;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .faq-body {
      padding: 0 24px 20px 24px;
      font-size: 0.925rem;
      color: #475569;
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-body {
      display: block;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    /* 板块 13: 终极转化与订阅条 (Bottom Conversion Area) */
    .conversion-banner {
      background: linear-gradient(135deg, var(--dark-slate) 0%, #1E293B 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #FFFFFF;
      box-shadow: 0 20px 40px -15px rgba(11, 19, 43, 0.5);
      position: relative;
      overflow: hidden;
    }
    .conversion-banner::before {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 260px;
      height: 260px;
      background: radial-gradient(circle, rgba(13, 148, 136, 0.35) 0%, transparent 70%);
      pointer-events: none;
    }
    .conv-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      align-items: center;
      position: relative;
      z-index: 1;
    }
    .conv-info h2 {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .conv-info p {
      font-size: 0.98rem;
      color: #94A3B8;
      line-height: 1.68;
    }
    .conv-form {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 24px;
      backdrop-filter: blur(10px);
    }
    .conv-input-group {
      display: flex;
      gap: 10px;
      margin-bottom: 12px;
    }
    .conv-input {
      flex: 1;
      padding: 13px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(15, 23, 42, 0.6);
      color: #FFFFFF;
      font-size: 0.9375rem;
      outline: none;
      transition: border-color 0.2s;
    }
    .conv-input:focus {
      border-color: var(--primary);
    }
    .conv-note {
      font-size: 0.775rem;
      color: #94A3B8;
      line-height: 1.45;
    }

    /* 页脚 Footer */
    footer.main-footer {
      background-color: #060B1A;
      color: #94A3B8;
      padding: 72px 0 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand-title svg {
      width: 26px;
      height: 26px;
      fill: var(--primary);
    }
    .footer-col h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links li a:hover {
      color: #2DD4BF;
    }
    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      color: #94A3B8;
    }
    .footer-contact-item svg {
      width: 16px;
      height: 16px;
      fill: var(--primary);
      flex-shrink: 0;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 移动端与自适应断点 */
    @media (max-width: 1024px) {
      .hero-grid,
      .topics-grid,
      .conv-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .calendar-timeline,
      .opinion-cards,
      .news-grid,
      .media-scroll-container,
      .data-metrics-board,
      .arch-flow-grid,
      .scenario-grid,
      .milestones-flow,
      .trust-badges-grid,
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .hero-content h1 {
        font-size: 2.1rem;
      }
      .hero-pricing-matrix {
        grid-template-columns: 1fr;
      }
      .matrix-card.featured-card {
        transform: none;
      }
      .calendar-timeline,
      .opinion-cards,
      .news-grid,
      .media-scroll-container,
      .data-metrics-board,
      .arch-flow-grid,
      .scenario-grid,
      .milestones-flow,
      .trust-badges-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .conv-input-group {
        flex-direction: column;
      }
      .comp-table th, .comp-table td {
        padding: 12px 14px;
      }
      .comparison-table-wrapper {
        overflow-x: auto;
      }
      .comp-table {
        min-width: 620px;
      }
      section {
        padding: 56px 0;
      }
    }