/* roulang page: index */
:root {
      --primary: #00875a;
      --primary-hover: #006644;
      --primary-light: #e3fcef;
      --accent: #d97706;
      --accent-soft: #fef3c7;
      --bg-main: #f4f6f8;
      --bg-white: #ffffff;
      --bg-dark: #0b0f17;
      --bg-dark-card: #151b26;
      --text-main: #111827;
      --text-secondary: #4b5563;
      --text-muted: #6b7280;
      --text-light: #f9fafb;
      --border-color: rgba(0, 0, 0, 0.08);
      --border-dark: rgba(255, 255, 255, 0.12);
      --radius-sm: 3px;
      --radius-md: 5px;
      --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08);
      --transition-base: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      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", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      color: var(--text-main);
      background-color: var(--bg-main);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    ul, ol {
      list-style: none;
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部通栏信息 */
    .top-bar {
      background-color: var(--bg-dark);
      color: #9ca3af;
      font-size: 13px;
      border-bottom: 1px solid var(--border-dark);
      padding: 7px 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-meta-list {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .top-meta-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .top-meta-item span.indicator {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--primary);
      display: inline-block;
    }

    /* 主导航 */
    .site-header {
      background-color: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(8px);
      position: sticky;
      top: 0;
      z-index: 100;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    }
    .navbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-mark {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      font-weight: 900;
      border-radius: var(--radius-sm);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-item {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-secondary);
      position: relative;
      padding: 6px 0;
    }
    .nav-item:hover, .nav-item.active {
      color: var(--primary);
    }
    .nav-item.active::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      right: 0;
      height: 2px;
      background-color: var(--primary);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition-base);
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 2px 6px rgba(0, 135, 90, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(0, 135, 90, 0.35);
    }
    .btn-outline {
      border-color: #cbd5e1;
      background: #ffffff;
      color: var(--text-main);
    }
    .btn-outline:hover {
      background-color: #f8fafc;
      border-color: #94a3b8;
    }
    .btn-accent {
      background-color: var(--accent);
      color: #ffffff;
    }
    .btn-accent:hover {
      background-color: #b45309;
      transform: translateY(-2px);
    }
    .btn-lg {
      padding: 14px 28px;
      font-size: 15px;
    }

    /* 板块共有规范 */
    .section-wrap {
      padding: 90px 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 52px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      text-transform: uppercase;
      font-weight: 700;
      letter-spacing: 1px;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .section-tag.dark {
      background-color: rgba(0, 135, 90, 0.2);
      color: #34d399;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      letter-spacing: -0.5px;
    }
    .section-subtitle {
      margin-top: 14px;
      font-size: 15px;
      color: var(--text-secondary);
      max-width: 780px;
      line-height: 1.7;
    }

    /* 板块一：Hero 首屏（蓝图：促销主视觉 + 角标/爆炸贴 + 限时文案 + 强对比按钮） */
    .hero-banner {
      background: linear-gradient(rgba(11, 15, 23, 0.88), rgba(11, 15, 23, 0.94)), url('/assets/images/3fd30f6ccfdddc50.png') center/cover no-repeat;
      color: #ffffff;
      padding: 100px 0 110px;
      position: relative;
      border-bottom: 1px solid var(--border-dark);
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .badge-ribbon {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(217, 119, 6, 0.2);
      border: 1px solid var(--accent);
      color: #fcd34d;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      margin-bottom: 24px;
    }
    .badge-ribbon .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.3); }
      100% { opacity: 1; transform: scale(1); }
    }
    .hero-banner h1 {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }
    .hero-desc {
      font-size: 16px;
      line-height: 1.8;
      color: #d1d5db;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 36px;
    }
    .hero-guarantee-strip {
      display: flex;
      gap: 24px;
      border-top: 1px solid var(--border-dark);
      padding-top: 20px;
      font-size: 13px;
      color: #9ca3af;
    }
    .hero-guarantee-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .hero-guarantee-item strong {
      color: #ffffff;
    }
    .hero-product-stage {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-lg);
    }
    .burst-tag {
      position: absolute;
      top: -12px;
      right: 20px;
      background: #dc2626;
      color: #ffffff;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
      box-shadow: 0 4px 10px rgba(220, 38, 38, 0.4);
      letter-spacing: 0.5px;
    }
    .hero-stage-img {
      width: 100%;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-dark);
      margin-bottom: 16px;
      aspect-ratio: 16 / 10;
      object-fit: cover;
    }
    .stage-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      background: rgba(255, 255, 255, 0.03);
      padding: 12px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-dark);
      text-align: center;
    }
    .stage-stat-val {
      font-size: 17px;
      font-weight: 700;
      color: #34d399;
    }
    .stage-stat-lbl {
      font-size: 11px;
      color: #9ca3af;
    }

    /* 板块二：痛点剖析（#challenges） */
    .bg-light-alt {
      background-color: #ffffff;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .challenge-card {
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 28px 24px;
      transition: var(--transition-base);
      display: flex;
      flex-direction: column;
    }
    .challenge-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .challenge-num {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 16px;
      display: inline-block;
    }
    .challenge-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .challenge-p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 板块三：全栈半导体检测设备解决方案（#solution） */
    .solution-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 32px;
    }
    .solution-block:last-child {
      margin-bottom: 0;
    }
    .solution-block.reversed {
      direction: rtl;
    }
    .solution-block.reversed > * {
      direction: ltr;
    }
    .solution-media {
      height: 100%;
      min-height: 380px;
      position: relative;
    }
    .solution-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .solution-body {
      padding: 48px 40px;
    }
    .solution-body h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .solution-body p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .spec-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .spec-badge {
      font-size: 12px;
      font-weight: 600;
      background: var(--bg-main);
      padding: 6px 12px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      color: var(--text-secondary);
    }

    /* 板块四：核心硬件与光学优势矩阵（#features） */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 32px 28px;
      transition: var(--transition-base);
    }
    .feature-box:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .feature-icon-mark {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 20px;
    }
    .feature-box h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .feature-box p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* 板块五：热门半导体检测设备产品矩阵（#products） */
    .product-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition-base);
    }
    .product-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: #cbd5e1;
    }
    .product-thumb {
      height: 230px;
      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(1.04);
    }
    .product-model {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(11, 15, 23, 0.85);
      color: #ffffff;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      letter-spacing: 0.5px;
    }
    .product-info {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-info h4 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .product-info p {
      font-size: 14px;
      color: var(--text-secondary);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .param-list {
      background: var(--bg-main);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      margin-bottom: 20px;
      font-size: 13px;
    }
    .param-row {
      display: flex;
      justify-content: space-between;
      padding: 4px 0;
      border-bottom: 1px dashed rgba(0, 0, 0, 0.06);
    }
    .param-row:last-child {
      border-bottom: none;
    }
    .param-row span:first-child {
      color: var(--text-muted);
    }
    .param-row span:last-child {
      font-weight: 600;
      color: var(--text-main);
    }

    /* 板块六：超精密工程深色区（#technology） */
    .dark-section {
      background-color: var(--bg-dark);
      color: var(--text-light);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .dark-section .section-title {
      color: #ffffff;
    }
    .dark-section .section-subtitle {
      color: #9ca3af;
    }
    .tech-deep-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .tech-card-group {
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
    }
    .tech-item-row {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      padding: 20px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--primary);
    }
    .tech-item-row h5 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
      color: #f3f4f6;
    }
    .tech-item-row p {
      font-size: 13.5px;
      color: #9ca3af;
      line-height: 1.6;
    }
    .tech-visual-frame {
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: #000000;
    }
    .tech-visual-frame img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      opacity: 0.88;
    }

    /* 板块七：产线标杆客户应用故事（#case-studies） */
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .case-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border-color);
    }
    .client-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
    }
    .case-timeline {
      font-size: 12px;
      color: var(--text-muted);
    }
    .case-card h4 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .case-compare-table {
      margin-top: 18px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      background: var(--bg-main);
      padding: 14px;
      border-radius: var(--radius-sm);
    }
    .compare-side {
      font-size: 13px;
    }
    .compare-side.before {
      border-right: 1px solid var(--border-color);
      padding-right: 10px;
    }
    .compare-side strong {
      display: block;
      margin-bottom: 4px;
      color: var(--text-main);
    }

    /* 板块八：关键量产性能数据统计条（#metrics） */
    .metrics-bar {
      background: #111827;
      color: #ffffff;
      padding: 60px 0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-number {
      font-size: 40px;
      font-weight: 800;
      color: #34d399;
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .metric-title {
      font-size: 15px;
      font-weight: 600;
      color: #e5e7eb;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: #9ca3af;
    }

    /* 板块九：工程师评价（#testimonials） */
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: var(--accent);
      font-size: 14px;
      margin-bottom: 12px;
    }
    .review-quote {
      font-size: 14.5px;
      line-height: 1.7;
      color: var(--text-secondary);
      margin-bottom: 20px;
      font-style: normal;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar-ph {
      width: 40px;
      height: 40px;
      background: #e2e8f0;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      color: var(--text-secondary);
    }
    .author-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-title {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块十：前沿资讯（#insights） */
    .insight-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .insight-thumb {
      height: 190px;
      overflow: hidden;
    }
    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-content {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .insight-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .insight-content h4 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
      line-height: 1.4;
    }
    .insight-content p {
      font-size: 13.5px;
      color: var(--text-secondary);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    /* 板块十一：选型对比与配置等级（#compare） */
    .compare-table-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .data-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .data-table th, .data-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .data-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .data-table tr:last-child td {
      border-bottom: none;
    }
    .data-table tr:hover td {
      background-color: #fafbfc;
    }

    /* 板块十二：FAQ 与测试申请收口区（#contact-cta） */
    .faq-container {
      margin-bottom: 60px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      user-select: none;
    }
    .faq-question:hover {
      background-color: #f8fafc;
    }
    .faq-toggle-icon {
      font-size: 20px;
      font-weight: 400;
      transition: transform 0.25s ease;
      color: var(--primary);
    }
    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14.5px;
      color: var(--text-secondary);
      line-height: 1.7;
      display: none;
      border-top: 1px solid rgba(0, 0, 0, 0.04);
      padding-top: 16px;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }

    /* 预约转化卡 */
    .cta-card-box {
      background: linear-gradient(135deg, #0b0f17 0%, #1e293b 100%);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 48px;
      border: 1px solid var(--border-dark);
      box-shadow: var(--shadow-lg);
    }
    .cta-card-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-text h3 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .cta-text p {
      font-size: 15px;
      color: #9ca3af;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-contact-points {
      font-size: 13.5px;
      color: #cbd5e1;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .cta-contact-points div span {
      color: #34d399;
      font-weight: 600;
      margin-right: 8px;
    }
    .cta-form {
      background: #ffffff;
      padding: 28px;
      border-radius: var(--radius-sm);
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 10px 12px;
      font-size: 14px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      background-color: #f8fafc;
      outline: none;
      transition: var(--transition-base);
    }
    .form-control:focus {
      border-color: var(--primary);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(0, 135, 90, 0.15);
    }
    .form-agree {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.5;
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--bg-dark);
      color: #9ca3af;
      font-size: 14px;
      border-top: 1px solid var(--border-dark);
      padding: 64px 0 28px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col ul a:hover {
      color: #ffffff;
    }
    .footer-brand-p {
      font-size: 13.5px;
      line-height: 1.7;
      margin-top: 14px;
      color: #9ca3af;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }
    .footer-bottom a:hover {
      color: #ffffff;
    }

    /* 移动端断点适配 */
    @media (max-width: 1024px) {
      .hero-grid, .cta-card-grid, .tech-deep-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-block, .solution-block.reversed {
        grid-template-columns: 1fr;
        direction: ltr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .section-wrap {
        padding: 56px 0;
      }
      .hero-banner h1 {
        font-size: 30px;
      }
      .grid-3, .grid-4, .grid-2, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-card-box {
        padding: 28px 20px;
      }
      .top-meta-list {
        display: none;
      }
    }