/* roulang page: index */
:root {
      --primary: #0F4C81;
      --primary-light: #0284C7;
      --primary-dark: #0A365C;
      --dark-navy: #0B192C;
      --bg-main: #FFFFFF;
      --bg-alt: #F8FAFC;
      --bg-soft: #F1F5F9;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --card-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.06), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
      --card-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
    }

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

    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      color: var(--text-main);
      background-color: var(--bg-main);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部顶条 */
    .top-bar {
      background-color: var(--bg-soft);
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .top-bar-flex {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-items {
      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;
    }
    .header-nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
    }
    .nav-item a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
    }
    .nav-item a:hover, .nav-item.active a {
      color: var(--primary);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 2px 4px rgba(15, 76, 129, 0.2);
    }
    .btn-primary:hover {
      background-color: var(--primary-light);
      transform: translateY(-2px);
      box-shadow: 0 6px 12px rgba(2, 132, 199, 0.25);
    }
    .btn-secondary {
      background-color: #FFFFFF;
      color: var(--primary);
      border-color: var(--border-color);
    }
    .btn-secondary:hover {
      border-color: var(--primary-light);
      color: var(--primary-light);
      background-color: var(--bg-alt);
    }

    /* 板块通用 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary-light);
      background: #E0F2FE;
      padding: 4px 12px;
      border-radius: 9999px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 760px;
      line-height: 1.7;
    }

    /* 1. Hero 卡片堆叠 */
    .hero-section {
      padding: 60px 0 90px;
      background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      color: var(--primary);
    }
    .hero-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .hero-btn-group {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-meta {
      display: flex;
      gap: 28px;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
    }
    .hero-meta-item strong {
      display: block;
      font-size: 20px;
      color: var(--text-main);
    }
    .hero-meta-item span {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 卡片堆叠视觉容器 */
    .hero-stack-container {
      position: relative;
      min-height: 440px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .stack-card {
      position: absolute;
      border-radius: var(--radius-md);
      background: #FFFFFF;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-color);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      overflow: hidden;
    }
    .stack-card:hover {
      box-shadow: var(--card-hover);
      z-index: 10 !important;
    }
    .stack-card-main {
      width: 78%;
      z-index: 3;
      transform: translate(0, 0);
    }
    .stack-card-left {
      width: 65%;
      z-index: 1;
      left: 0;
      bottom: 20px;
      opacity: 0.95;
      transform: translate(-5%, 5%) rotate(-2deg);
    }
    .stack-card-right {
      width: 65%;
      z-index: 2;
      right: 0;
      top: 20px;
      opacity: 0.95;
      transform: translate(5%, -5%) rotate(2deg);
    }
    .stack-card img {
      width: 100%;
      height: 170px;
      object-fit: cover;
    }
    .stack-card-content {
      padding: 16px;
    }
    .stack-card-tag {
      font-size: 11px;
      color: var(--primary);
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 4px;
    }
    .stack-card-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .stack-card-desc {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 2. 倒计时带与新品发布速览 */
    .countdown-bar {
      background: #0B192C;
      color: #FFFFFF;
      padding: 30px 0;
    }
    .countdown-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .countdown-title-wrap h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 4px;
      color: #FFFFFF;
    }
    .countdown-title-wrap p {
      font-size: 13px;
      color: #94A3B8;
    }
    .timer-boxes {
      display: flex;
      gap: 12px;
    }
    .timer-unit {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 10px 16px;
      border-radius: var(--radius-sm);
      text-align: center;
      min-width: 68px;
    }
    .timer-num {
      font-size: 22px;
      font-weight: 800;
      color: #38BDF8;
      display: block;
      line-height: 1.1;
    }
    .timer-label {
      font-size: 11px;
      color: #94A3B8;
      text-transform: uppercase;
    }

    /* 3. 痛点与产业挑战 (3列异构) */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pain-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
      position: relative;
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover);
      border-color: #BAE6FD;
    }
    .pain-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: #F0FDF4;
      color: #166534;
      margin-bottom: 20px;
      font-weight: 800;
      font-size: 18px;
    }
    .pain-card:nth-child(2) .pain-badge {
      background: #FEF3C7;
      color: #92400E;
    }
    .pain-card:nth-child(3) .pain-badge {
      background: #FEE2E2;
      color: #991B1B;
    }
    .pain-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .pain-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 4. 品牌与体系 (双栏图文 + JEDEC/AEC) */
    .brand-sol-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .brand-img-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--card-hover);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .brand-img-wrap img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .spec-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }
    .spec-badge-item {
      background: var(--bg-soft);
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 5. 核心优势矩阵 (6卡片) */
    .grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .strength-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
    }
    .strength-card:hover {
      border-color: var(--primary-light);
      box-shadow: var(--card-hover);
      transform: translateY(-4px);
    }
    .strength-icon {
      font-size: 24px;
      color: var(--primary);
      margin-bottom: 16px;
      display: inline-block;
    }
    .strength-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .strength-card p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 6. 热门存储芯片产品区 (3卡片带真实规格) */
    .product-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      transition: all 0.25s ease;
    }
    .product-card:hover {
      box-shadow: var(--card-hover);
      transform: translateY(-4px);
    }
    .product-thumb {
      height: 200px;
      width: 100%;
      overflow: hidden;
      position: relative;
    }
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .product-card:hover .product-thumb img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .product-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .product-desc {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .product-specs {
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      padding: 12px;
      font-size: 12.5px;
      color: var(--text-muted);
      margin-bottom: 20px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
    }
    .product-specs span strong {
      color: var(--text-main);
    }
    .product-footer {
      margin-top: auto;
    }

    /* 7. 制造流程与可靠性方法 (时间轴) */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
      margin-top: 20px;
    }
    .timeline-step {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      box-shadow: var(--card-shadow);
    }
    .timeline-badge {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      margin-bottom: 16px;
    }
    .timeline-step h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .timeline-step p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 深色战略与核心架构 */
    .dark-section {
      background-color: var(--dark-navy);
      color: #FFFFFF;
      padding: 85px 0;
    }
    .dark-section .section-title {
      color: #FFFFFF;
    }
    .dark-section .section-desc {
      color: #94A3B8;
    }
    .dark-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
    }
    .dark-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .dark-list-item {
      display: flex;
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px;
      border-radius: var(--radius-md);
    }
    .dark-list-icon {
      color: #38BDF8;
      font-size: 20px;
      line-height: 1;
      padding-top: 2px;
    }
    .dark-list-item h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 4px;
      color: #FFFFFF;
    }
    .dark-list-item p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }
    .dark-preview-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.12);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    /* 9. 应用场景与适用人群 */
    .app-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .app-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all 0.25s ease;
    }
    .app-card:hover {
      box-shadow: var(--card-hover);
      transform: translateY(-4px);
    }
    .app-card img {
      width: 100%;
      height: 150px;
      object-fit: cover;
    }
    .app-card-body {
      padding: 20px;
    }
    .app-card-body h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .app-card-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 10. 用户成功故事 (双栏深度案例) */
    .case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .case-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .case-card img {
      width: 100%;
      height: 220px;
      object-fit: cover;
    }
    .case-content {
      padding: 28px;
    }
    .case-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 8px;
      display: block;
    }
    .case-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .case-desc {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .case-metric {
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
      display: flex;
      justify-content: space-between;
      font-size: 13px;
    }
    .case-metric strong {
      color: var(--primary);
    }

    /* 11. 数据指标条 */
    .metrics-section {
      background: var(--bg-soft);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 55px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-item .val {
      font-size: 40px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-item .lbl {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 12. 客户与技术评价 */
    .grid-3-eval {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 20px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .review-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 strong {
      display: block;
      font-size: 14px;
      color: var(--text-main);
    }
    .author-info span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 13. 新闻与行业洞见 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 180px;
      width: 100%;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .news-card:hover .news-img img {
      transform: scale(1.04);
    }
    .news-content {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 16px;
      font-weight: 700;
      line-height: 1.45;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .news-brief {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .news-link {
      margin-top: auto;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 14. FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }
    .faq-question {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      background: #FFFFFF;
      user-select: none;
      transition: background 0.2s ease;
    }
    .faq-question:hover {
      background: var(--bg-alt);
    }
    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: var(--bg-alt);
      border-top: 0px solid transparent;
    }
    .faq-item.active .faq-answer {
      border-top: 1px solid var(--border-color);
      max-height: 250px;
    }
    .faq-answer p {
      padding: 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 15. 底部表单转化区 */
    .contact-card-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: var(--card-hover);
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 44px;
    }
    .contact-info-side h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .contact-info-side p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .contact-detail-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .contact-detail-list strong {
      color: var(--text-main);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .form-group-full {
      grid-column: span 2;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      background: var(--bg-alt);
      transition: border-color 0.2s ease;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #FFFFFF;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    /* 全局页脚 */
    .site-footer {
      background: var(--dark-navy);
      color: #94A3B8;
      padding: 70px 0 30px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 18px;
      margin-bottom: 14px;
      font-weight: 700;
    }
    .footer-brand p {
      font-size: 13.5px;
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 15px;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #38BDF8;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }
    .footer-bottom a {
      color: #94A3B8;
    }
    .footer-bottom a:hover {
      color: #FFFFFF;
    }

    /* 移动端菜单控制 */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-btn svg {
      width: 26px;
      height: 26px;
      fill: var(--text-main);
    }

    /* 响应式样式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .hero-stack-container {
        min-height: 380px;
      }
      .brand-sol-grid {
        grid-template-columns: 1fr;
      }
      .dark-grid {
        grid-template-columns: 1fr;
      }
      .grid-3, .grid-6, .grid-3-eval, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .app-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        gap: 16px;
      }
      .nav-links.show {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .header-cta {
        display: none;
      }
      .hero-title {
        font-size: 30px;
      }
      .grid-3, .grid-6, .grid-3-eval, .news-grid, .case-grid, .app-grid, .process-timeline {
        grid-template-columns: 1fr;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .contact-card-box {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }