/* roulang page: index */
:root {
      --bg-dark: #0a0d12;
      --bg-card-dark: #121824;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --text-inverse: #f8fafc;
      --brand-green: #059669;
      --brand-green-light: #10b981;
      --brand-blue: #2563eb;
      --border-light: #e2e8f0;
      --border-dark: #1e293b;
      --font-base: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
      --font-mono: "JetBrains Mono", Menlo, Monaco, Consolas, monospace;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 12px 30px -4px rgba(15, 23, 42, 0.1);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-base);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.65;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部微型状态条 */
    .top-bar {
      background: #06090e;
      color: #94a3b8;
      font-size: 12px;
      border-bottom: 1px solid #1a2230;
      padding: 7px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-links span {
      margin-right: 18px;
    }
    .top-bar-links a:hover {
      color: var(--brand-green-light);
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
    }
    .brand-logo .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--brand-green), #047857);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-family: var(--font-mono);
      font-size: 18px;
      font-weight: 700;
      box-shadow: 0 4px 10px rgba(5, 150, 105, 0.3);
    }
    .nav-menu {
      display: flex;
      gap: 28px;
      list-style: none;
    }
    .nav-menu a {
      font-size: 15px;
      font-weight: 500;
      color: #334155;
    }
    .nav-menu a:hover {
      color: var(--brand-green);
    }
    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--brand-green);
      color: #fff !important;
      padding: 9px 20px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 14px;
      box-shadow: 0 3px 12px rgba(5, 150, 105, 0.25);
    }
    .nav-cta-btn:hover {
      background: #047857;
      transform: translateY(-1px);
    }

    /* 板块排版公用 */
    section {
      padding: 88px 0;
      position: relative;
    }
    .section-head {
      margin-bottom: 50px;
    }
    .section-tag {
      display: inline-block;
      font-family: var(--font-mono);
      font-size: 12px;
      text-transform: uppercase;
      font-weight: 600;
      letter-spacing: 1px;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      background: rgba(5, 150, 105, 0.1);
      color: var(--brand-green);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      letter-spacing: -0.5px;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 780px;
    }

    /* 1. Hero 板块（拼团转化版式） */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, #1e293b 0%, #0a0d12 70%);
      color: #ffffff;
      padding: 85px 0 95px 0;
      overflow: hidden;
      border-bottom: 1px solid #1e293b;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 22px;
      letter-spacing: -1px;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #34d399, #60a5fa);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 16px;
      color: #94a3b8;
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .hero-group-badge {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 10px 18px;
      border-radius: var(--radius-md);
      margin-bottom: 30px;
    }
    .avatar-stack {
      display: flex;
    }
    .avatar-stack span {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: #334155;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      font-weight: 700;
      border: 2px solid #0a0d12;
      margin-left: -8px;
    }
    .avatar-stack span:first-child { margin-left: 0; background: var(--brand-green); }
    .avatar-stack span:nth-child(2) { background: #2563eb; }
    .avatar-stack span:nth-child(3) { background: #7c3aed; }
    .hero-group-text {
      font-size: 13px;
      color: #cbd5e1;
    }
    .hero-group-text strong {
      color: #34d399;
      font-weight: 700;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 35px;
    }
    .btn-primary {
      background: var(--brand-green);
      color: #ffffff;
      padding: 14px 28px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      box-shadow: 0 4px 16px rgba(5, 150, 105, 0.35);
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: #047857;
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.07);
      color: #ffffff;
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 14px 28px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: rgba(255, 255, 255, 0.35);
    }
    .hero-visual-card {
      position: relative;
      background: var(--bg-card-dark);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 18px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }
    .hero-visual-card img {
      width: 100%;
      height: 340px;
      object-fit: cover;
      border-radius: var(--radius-md);
      margin-bottom: 16px;
    }
    .floating-snippet {
      background: #090e17;
      border: 1px solid #1e293b;
      padding: 14px 18px;
      border-radius: var(--radius-md);
      font-family: var(--font-mono);
      font-size: 12px;
      color: #94a3b8;
    }
    .floating-snippet .term-title {
      color: #38bdf8;
      display: block;
      margin-bottom: 4px;
    }

    /* 2. 品类入口区 (Category Matrix) */
    .category-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .category-card {
      border: 1px solid var(--border-light);
      background: var(--bg-white);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .category-card:hover {
      border-color: var(--brand-green);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .category-card-top {
      margin-bottom: 16px;
    }
    .category-pill {
      font-size: 11px;
      font-weight: 700;
      color: var(--brand-green);
      background: rgba(5, 150, 105, 0.08);
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 10px;
    }
    .category-name {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .category-detail {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .category-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--brand-green);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 14px;
    }

    /* 3. 附近推荐 / 线下实训基地 (Nearby Labs) */
    .nearby-section {
      background: var(--bg-light);
      border-bottom: 1px solid var(--border-light);
    }
    .nearby-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .nearby-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .nearby-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .nearby-img-wrap {
      height: 180px;
      overflow: hidden;
      position: relative;
    }
    .nearby-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .nearby-dist-badge {
      position: absolute;
      top: 12px;
      right: 12px;
      background: rgba(15, 23, 42, 0.85);
      color: #fff;
      font-size: 11px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-full);
      backdrop-filter: blur(4px);
    }
    .nearby-body {
      padding: 20px;
    }
    .nearby-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .nearby-address {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .nearby-tags {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 16px;
    }
    .nearby-tag {
      font-size: 11px;
      background: #f1f5f9;
      color: #475569;
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 4. 口碑榜 / 实训好评排行榜 */
    .ranking-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .ranking-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .rank-item {
      display: flex;
      gap: 18px;
      padding: 20px;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      background: #ffffff;
      transition: var(--transition);
      align-items: center;
    }
    .rank-item:hover {
      border-color: var(--brand-green);
      box-shadow: var(--shadow-sm);
    }
    .rank-num {
      font-size: 26px;
      font-family: var(--font-mono);
      font-weight: 800;
      color: #cbd5e1;
      width: 44px;
      text-align: center;
      flex-shrink: 0;
    }
    .rank-top {
      color: var(--brand-green);
    }
    .rank-info {
      flex: 1;
    }
    .rank-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .rank-meta {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .rank-stars {
      color: #f59e0b;
      font-size: 12px;
    }

    /* 5. 教学优势与标准体系 (About / Core) */
    .advantage-section {
      background: var(--bg-light);
      border-bottom: 1px solid var(--border-light);
    }
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      padding: 28px;
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .adv-code {
      font-family: var(--font-mono);
      font-size: 12px;
      font-weight: 700;
      color: var(--brand-blue);
      margin-bottom: 12px;
      display: block;
    }
    .adv-name {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .adv-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 6. 企业实战项目深度解析 (Dark Cases) */
    .dark-case-section {
      background: #0a0d12;
      color: #ffffff;
      border-bottom: 1px solid #1e293b;
    }
    .dark-case-section .section-title {
      color: #ffffff;
    }
    .dark-case-section .section-subtitle {
      color: #94a3b8;
    }
    .dark-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .dark-card {
      background: #111722;
      border: 1px solid #1e293b;
      border-radius: var(--radius-lg);
      padding: 30px;
      transition: var(--transition);
    }
    .dark-card:hover {
      border-color: var(--brand-green-light);
      transform: translateY(-3px);
    }
    .dark-tag {
      background: rgba(16, 185, 129, 0.15);
      color: #34d399;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 16px;
    }
    .dark-card h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .dark-card p {
      color: #94a3b8;
      font-size: 14px;
      line-height: 1.65;
      margin-bottom: 18px;
    }
    .dark-tech-pills {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    .tech-pill {
      font-family: var(--font-mono);
      font-size: 11px;
      background: #1e293b;
      color: #cbd5e1;
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 7. 硬核实训量化指标条 (Metrics) */
    .metrics-section {
      background: #ffffff;
      padding: 55px 0;
      border-bottom: 1px solid var(--border-light);
    }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .metric-item {
      padding: 10px;
    }
    .metric-val {
      font-family: var(--font-mono);
      font-size: 40px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-val span {
      font-size: 20px;
      color: var(--brand-green);
    }
    .metric-label {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 8. 学员成长轨迹与代码成果 (Student Stories) */
    .stories-section {
      background: var(--bg-light);
      border-bottom: 1px solid var(--border-light);
    }
    .story-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .story-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .story-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 14px;
    }
    .story-author {
      font-weight: 700;
      font-size: 16px;
    }
    .story-jump {
      font-size: 12px;
      background: #ecfdf5;
      color: #047857;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .story-body {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 14px;
    }
    .story-repo {
      font-family: var(--font-mono);
      font-size: 12px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      color: #334155;
    }

    /* 9. 保障承诺条 (Guarantees) */
    .guarantee-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-card {
      border: 1px solid var(--border-light);
      padding: 24px;
      border-radius: var(--radius-md);
      text-align: left;
      background: #fcfdfe;
    }
    .guarantee-card-icon {
      width: 40px;
      height: 40px;
      border-radius: var(--radius-sm);
      background: rgba(5, 150, 105, 0.1);
      color: var(--brand-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .guarantee-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .guarantee-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 10. 到店与实训流程 (Process) */
    .process-section {
      background: var(--bg-light);
      border-bottom: 1px solid var(--border-light);
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-num {
      font-family: var(--font-mono);
      font-size: 22px;
      font-weight: 800;
      color: var(--brand-green);
      margin-bottom: 10px;
    }
    .step-title {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 11. 前沿资讯与IT工程动态 (Embedded News) */
    .news-section {
      background: #ffffff;
      border-bottom: 1px solid var(--border-light);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #ffffff;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .news-img {
      height: 170px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-content {
      padding: 20px;
    }
    .news-date {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .news-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 12. 答疑解惑 (FAQ Accordion) */
    .faq-section {
      background: var(--bg-light);
      border-bottom: 1px solid var(--border-light);
    }
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    details.faq-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 18px 24px;
      transition: var(--transition);
    }
    details.faq-item[open] {
      border-color: var(--brand-green);
      box-shadow: var(--shadow-sm);
    }
    summary.faq-question {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    summary.faq-question::-webkit-details-marker {
      display: none;
    }
    summary.faq-question::after {
      content: "+";
      font-size: 20px;
      font-weight: 700;
      color: var(--text-muted);
      transition: transform 0.2s;
    }
    details[open] summary.faq-question::after {
      content: "-";
      color: var(--brand-green);
    }
    .faq-answer {
      margin-top: 14px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed var(--border-light);
      padding-top: 12px;
    }

    /* 13. 底部预约与实训咨询入口 (Appointment Entrance) */
    .appoint-section {
      background: radial-gradient(circle at 50% 50%, #1e293b 0%, #0a0d12 100%);
      color: #ffffff;
      padding: 90px 0;
    }
    .appoint-box {
      max-width: 680px;
      margin: 0 auto;
      background: rgba(18, 24, 36, 0.95);
      border: 1px solid #1e293b;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    }
    .appoint-box .section-title {
      color: #ffffff;
      text-align: center;
      margin-bottom: 8px;
    }
    .appoint-box .section-subtitle {
      color: #94a3b8;
      text-align: center;
      margin-bottom: 30px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: #cbd5e1;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      background: #090e17;
      border: 1px solid #1e293b;
      color: #ffffff;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--brand-green);
      box-shadow: 0 0 0 2px rgba(5, 150, 105, 0.2);
    }
    .form-submit-btn {
      width: 100%;
      background: var(--brand-green);
      color: #ffffff;
      padding: 14px;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      margin-top: 10px;
      transition: var(--transition);
    }
    .form-submit-btn:hover {
      background: #047857;
    }
    .form-tip {
      font-size: 12px;
      color: #64748b;
      text-align: center;
      margin-top: 14px;
    }

    /* 移动端吸底条 */
    .mobile-sticky-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(8px);
      padding: 10px 16px;
      border-top: 1px solid #1e293b;
      z-index: 998;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }
    .mobile-sticky-btn {
      flex: 1;
      text-align: center;
      padding: 10px 0;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
    }
    .mobile-sticky-call {
      background: #1e293b;
      color: #ffffff;
      border: 1px solid #334155;
    }
    .mobile-sticky-act {
      background: var(--brand-green);
      color: #ffffff;
    }

    /* 页脚 */
    .site-footer {
      background: #06090e;
      color: #94a3b8;
      border-top: 1px solid #141c28;
      padding: 60px 0 28px 0;
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-col p {
      line-height: 1.7;
      margin-bottom: 12px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #141c28;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12px;
      color: #64748b;
    }

    /* 响应式样式 */
    @media (max-width: 1024px) {
      .category-grid,
      .guarantee-grid,
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .hero-grid,
      .ranking-grid,
      .dark-grid {
        grid-template-columns: 1fr;
      }
      .nearby-grid,
      .adv-grid,
      .story-grid,
      .news-grid {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 32px;
      }
      section {
        padding: 56px 0;
      }
      .mobile-sticky-bar {
        display: flex;
      }
      body {
        padding-bottom: 60px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }