/* roulang page: index */
:root {
      --bg-dark: #0D1117;
      --bg-card-dark: #161B22;
      --bg-card-alt: #1F242C;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-dark: rgba(255, 255, 255, 0.08);
      --border-accent: rgba(0, 242, 254, 0.25);
      --border-light: #E2E8F0;
      --text-main: #0D1117;
      --text-muted: #64748B;
      --text-light-main: #F1F5F9;
      --text-light-muted: #94A3B8;
      --color-primary: #00F2FE;
      --color-secondary: #4FACFE;
      --color-orange: #FF5E3A;
      --color-orange-hover: #E04D2A;
      --font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --font-mono: "JetBrains Mono", "DIN Alternate", Menlo, monospace;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      --shadow-light: 0 12px 32px -8px rgba(15, 23, 42, 0.06);
      --container-max: 1240px;
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-family);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font-family: inherit;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .mono {
      font-family: var(--font-mono);
    }

    /* 顶栏与主导航 */
    .header-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      background: rgba(13, 17, 23, 0.94);
      border-bottom: 1px solid var(--border-dark);
    }
    .top-bar {
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 12px;
      color: var(--text-light-muted);
      padding: 6px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-tag-group {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .top-status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background-color: #10B981;
      box-shadow: 0 0 8px #10B981;
      display: inline-block;
    }
    .main-nav {
      padding: 14px 0;
    }
    .main-nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 19px;
      color: #FFFFFF;
      letter-spacing: -0.02em;
    }
    .logo-badge {
      background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
      color: #04101A;
      font-size: 11px;
      padding: 2px 7px;
      border-radius: var(--radius-sm);
      font-weight: 800;
      text-transform: uppercase;
      font-family: var(--font-mono);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-item a {
      color: var(--text-light-muted);
      font-size: 14px;
      font-weight: 500;
    }
    .nav-item a:hover, .nav-item a.active {
      color: var(--color-primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .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-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      white-space: nowrap;
    }
    .btn-orange {
      background-color: var(--color-orange);
      color: #FFFFFF;
      box-shadow: 0 4px 18px rgba(255, 94, 58, 0.35);
    }
    .btn-orange:hover {
      background-color: var(--color-orange-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 22px rgba(255, 94, 58, 0.45);
    }
    .btn-outline-cyan {
      border-color: var(--color-primary);
      color: var(--color-primary);
      background: rgba(0, 242, 254, 0.05);
    }
    .btn-outline-cyan:hover {
      background: rgba(0, 242, 254, 0.15);
      transform: translateY(-1px);
    }
    .btn-outline-light {
      border-color: var(--border-light);
      color: var(--text-main);
      background: #FFFFFF;
    }
    .btn-outline-light:hover {
      background: #F1F5F9;
      border-color: #CBD5E1;
    }

    /* 移动端菜单开关 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      color: #FFFFFF;
      font-size: 24px;
      cursor: pointer;
      width: 44px;
      height: 44px;
    }

    /* 板块通用体系 */
    .section {
      padding: 86px 0;
      position: relative;
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: var(--text-light-main);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .section-light {
      background-color: #FFFFFF;
      color: var(--text-main);
    }
    .section-alt {
      background-color: var(--bg-light);
      color: var(--text-main);
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .eyebrow-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      font-family: var(--font-mono);
    }
    .eyebrow-cyan {
      background: rgba(0, 242, 254, 0.12);
      color: var(--color-primary);
      border: 1px solid rgba(0, 242, 254, 0.3);
    }
    .eyebrow-orange {
      background: rgba(255, 94, 58, 0.12);
      color: var(--color-orange);
      border: 1px solid rgba(255, 94, 58, 0.3);
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.25;
      margin-bottom: 16px;
    }
    .section-subtitle {
      font-size: 16px;
      line-height: 1.7;
    }
    .section-dark .section-subtitle {
      color: var(--text-light-muted);
    }
    .section-light .section-subtitle,
    .section-alt .section-subtitle {
      color: var(--text-muted);
    }

    /* 板块 1: Hero 自测选型短问卷 */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(0, 242, 254, 0.08) 0%, transparent 60%),
                  radial-gradient(circle at 10% 80%, rgba(79, 172, 254, 0.06) 0%, transparent 50%),
                  linear-gradient(180deg, #090C10 0%, #0D1117 100%);
      color: var(--text-light-main);
      padding: 70px 0 90px;
      border-bottom: 1px solid var(--border-dark);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.9fr;
      gap: 50px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 46px;
      font-weight: 800;
      letter-spacing: -0.03em;
      line-height: 1.18;
      margin-bottom: 22px;
      color: #FFFFFF;
    }
    .hero-content h1 span.gradient-text {
      background: linear-gradient(135deg, #00F2FE 0%, #4FACFE 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-light-muted);
      margin-bottom: 30px;
    }
    .hero-stats-row {
      display: flex;
      gap: 30px;
      padding-top: 24px;
      border-top: 1px solid var(--border-dark);
    }
    .hero-stat-item .num {
      font-size: 26px;
      font-weight: 800;
      color: #FFFFFF;
      font-family: var(--font-mono);
    }
    .hero-stat-item .num span {
      color: var(--color-primary);
      font-size: 18px;
    }
    .hero-stat-item .lbl {
      font-size: 13px;
      color: var(--text-light-muted);
    }
    .evaluator-card {
      background: var(--bg-card-dark);
      border: 1px solid rgba(0, 242, 254, 0.2);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.6);
      position: relative;
    }
    .evaluator-card::before {
      content: "";
      position: absolute;
      top: -1px;
      left: 15%;
      width: 70%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    }
    .eval-head {
      margin-bottom: 20px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--border-dark);
    }
    .eval-head h3 {
      font-size: 17px;
      color: #FFFFFF;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .eval-step-label {
      font-size: 11px;
      color: var(--color-primary);
      text-transform: uppercase;
      font-weight: 700;
      letter-spacing: 0.05em;
    }
    .eval-form-group {
      margin-bottom: 16px;
    }
    .eval-form-group label {
      display: block;
      font-size: 13px;
      color: var(--text-light-muted);
      margin-bottom: 6px;
    }
    .eval-select {
      width: 100%;
      padding: 10px 12px;
      background: #090C10;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      color: #FFFFFF;
      font-size: 13px;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .eval-select:focus {
      border-color: var(--color-primary);
    }
    .eval-result-preview {
      background: rgba(0, 242, 254, 0.04);
      border: 1px dashed rgba(0, 242, 254, 0.25);
      border-radius: var(--radius-md);
      padding: 12px 14px;
      margin: 18px 0;
      font-size: 12px;
      color: var(--text-light-muted);
      line-height: 1.6;
    }
    .eval-result-preview strong {
      color: var(--color-primary);
      display: block;
      margin-bottom: 4px;
    }

    /* 板块 2: 痛点清单 (#pain-solution) */
    .pain-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-light);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      position: relative;
    }
    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 36px -10px rgba(15, 23, 42, 0.12);
    }
    .pain-card-badge {
      display: inline-block;
      padding: 3px 8px;
      font-size: 11px;
      font-weight: 700;
      color: #EF4444;
      background: #FEE2E2;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
    }
    .pain-card h3 {
      font-size: 19px;
      margin-bottom: 12px;
      font-weight: 700;
    }
    .pain-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .solution-line {
      background: #F8FAFC;
      border-left: 3px solid var(--color-orange);
      padding: 10px 12px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      font-size: 13px;
      color: #1E293B;
      font-weight: 500;
    }

    /* 板块 3: 解决方案矩阵 (#brand-intro / #solution) */
    .solution-bento-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 24px;
    }
    .bento-card {
      background: var(--bg-card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 32px;
      transition: border-color 0.25s ease;
    }
    .bento-card:hover {
      border-color: var(--border-accent);
    }
    .bento-col-8 {
      grid-column: span 8;
    }
    .bento-col-4 {
      grid-column: span 4;
    }
    .bento-col-6 {
      grid-column: span 6;
    }
    .bento-card h3 {
      font-size: 20px;
      color: #FFFFFF;
      margin-bottom: 12px;
      font-weight: 700;
    }
    .bento-card p {
      font-size: 14px;
      color: var(--text-light-muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }
    .bento-params-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .bento-param-pill {
      font-size: 12px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      color: var(--color-primary);
      font-family: var(--font-mono);
    }

    /* 板块 4: 核心优势网格区 (#advantages) */
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 30px;
      position: relative;
      transition: all 0.25s ease;
    }
    .adv-card:hover {
      border-color: #38BDF8;
      transform: translateY(-3px);
      box-shadow: 0 14px 28px rgba(0, 0, 0, 0.05);
    }
    .adv-icon-box {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, rgba(0, 242, 254, 0.1), rgba(79, 172, 254, 0.15));
      color: #0284C7;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 18px;
      font-family: var(--font-mono);
    }
    .adv-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .adv-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 5: 场景演示展示区 (#products) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .scenario-card {
      background: var(--bg-card-dark);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-dark);
      display: flex;
      flex-direction: column;
    }
    .scenario-img-wrap {
      height: 190px;
      position: relative;
      overflow: hidden;
      background-color: #040608;
    }
    .scenario-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .scenario-card:hover .scenario-img-wrap img {
      transform: scale(1.04);
    }
    .scenario-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(13, 17, 23, 0.85);
      border: 1px solid var(--border-accent);
      color: var(--color-primary);
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
    }
    .scenario-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .scenario-body h3 {
      font-size: 18px;
      color: #FFFFFF;
      margin-bottom: 10px;
      font-weight: 700;
    }
    .scenario-body p {
      font-size: 13px;
      color: var(--text-light-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }

    /* 板块 6: 落地方法与交付四步法 (#steps) */
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .steps-timeline::before {
      content: "";
      position: absolute;
      top: 36px;
      left: 60px;
      right: 60px;
      height: 2px;
      background: var(--border-light);
      z-index: 1;
    }
    .step-node {
      position: relative;
      z-index: 2;
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 24px 20px;
    }
    .step-number {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #0F172A;
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 16px;
      border: 4px solid #FFFFFF;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      font-family: var(--font-mono);
    }
    .step-node h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-node p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 7: 标杆案例深读卡 (#cases) */
    .case-immersive-box {
      background: #0A0D12;
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .case-immersive-visual {
      position: relative;
      min-height: 380px;
    }
    .case-immersive-visual img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-immersive-content {
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-badge-meta {
      font-size: 12px;
      color: var(--color-primary);
      text-transform: uppercase;
      font-weight: 700;
      margin-bottom: 12px;
      font-family: var(--font-mono);
    }
    .case-immersive-content h3 {
      font-size: 24px;
      color: #FFFFFF;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 16px;
    }
    .case-immersive-content p {
      font-size: 14px;
      color: var(--text-light-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .case-data-badges {
      display: flex;
      gap: 20px;
      margin-bottom: 24px;
      padding: 16px 0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .case-metric .v {
      font-size: 22px;
      font-weight: 800;
      color: #FFFFFF;
      font-family: var(--font-mono);
    }
    .case-metric .k {
      font-size: 12px;
      color: var(--text-light-muted);
    }

    /* 板块 8: 成果数据指标条 (#stats) */
    .stats-bar-wrapper {
      background: linear-gradient(90deg, #090C10 0%, #161B22 50%, #090C10 100%);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 50px 0;
    }
    .stats-flex-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .stat-box-cell {
      position: relative;
    }
    .stat-box-cell:not(:last-child)::after {
      content: "";
      position: absolute;
      right: 0;
      top: 15%;
      height: 70%;
      width: 1px;
      background: rgba(255, 255, 255, 0.08);
    }
    .stat-val-huge {
      font-size: 44px;
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: var(--font-mono);
      letter-spacing: -0.03em;
    }
    .stat-val-huge span {
      color: var(--color-primary);
    }
    .stat-lbl-detail {
      font-size: 13px;
      color: var(--text-light-muted);
      letter-spacing: 0.02em;
    }

    /* 板块 9: 客户证言与社会认同 (#testimonials) */
    .testimonial-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-light);
    }
    .testi-quote {
      font-size: 14px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 22px;
    }
    .testi-author-info {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 16px;
      border-top: 1px solid #F1F5F9;
    }
    .testi-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #E2E8F0;
      color: #0F172A;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }
    .testi-author-meta h4 {
      font-size: 14px;
      font-weight: 700;
      color: #0F172A;
    }
    .testi-author-meta p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 10: 资讯与技术前沿动态 (#news) */
    .news-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-article-card {
      background: var(--bg-card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 26px;
      display: flex;
      flex-direction: column;
      transition: border-color 0.25s ease;
    }
    .news-article-card:hover {
      border-color: var(--border-accent);
    }
    .news-meta-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-light-muted);
      margin-bottom: 14px;
      font-family: var(--font-mono);
    }
    .news-article-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: #FFFFFF;
      line-height: 1.45;
      margin-bottom: 12px;
    }
    .news-article-card p {
      font-size: 13px;
      color: var(--text-light-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }
    .news-read-action {
      font-size: 13px;
      color: var(--color-primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 11: 套餐对比与部署配置 (#packages) */
    .pkg-compare-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .pkg-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .pkg-card.highlighted {
      border: 2px solid var(--color-orange);
      box-shadow: 0 16px 36px rgba(255, 94, 58, 0.12);
      transform: scale(1.02);
      z-index: 2;
    }
    .pkg-featured-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--color-orange);
      color: #FFFFFF;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }
    .pkg-name {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .pkg-target {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 22px;
      min-height: 38px;
    }
    .pkg-feature-list {
      list-style: none;
      margin-bottom: 30px;
      flex: 1;
    }
    .pkg-feature-item {
      font-size: 13px;
      color: #334155;
      padding: 8px 0;
      border-bottom: 1px solid #F1F5F9;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pkg-check-icon {
      color: #10B981;
      font-weight: 800;
    }

    /* 板块 12: 保障图标条与转化表单 (#guarantee & #cta) */
    .guarantee-ribbon {
      background: #090C10;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 30px 0;
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guar-item {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #FFFFFF;
    }
    .guar-icon {
      width: 36px;
      height: 36px;
      border-radius: var(--radius-sm);
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.2);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 800;
      font-family: var(--font-mono);
    }
    .guar-item h4 {
      font-size: 14px;
      font-weight: 700;
    }
    .guar-item p {
      font-size: 12px;
      color: var(--text-light-muted);
    }

    .cta-conversion-box {
      background: linear-gradient(135deg, #161B22 0%, #0D1117 100%);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 48px;
      position: relative;
      overflow: hidden;
      box-shadow: 0 24px 50px -15px rgba(0, 0, 0, 0.8);
    }
    .cta-conversion-box::after {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 350px;
      height: 350px;
      background: radial-gradient(circle, rgba(0, 242, 254, 0.08) 0%, transparent 70%);
      pointer-events: none;
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 40px;
      align-items: center;
      position: relative;
      z-index: 1;
    }
    .cta-left h2 {
      font-size: 32px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
      line-height: 1.25;
    }
    .cta-left p {
      font-size: 14px;
      color: var(--text-light-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-trust-items {
      display: flex;
      gap: 18px;
      font-size: 12px;
      color: var(--text-light-muted);
    }
    .cta-form {
      background: rgba(13, 17, 23, 0.75);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .form-group-row {
      margin-bottom: 16px;
    }
    .form-group-row label {
      display: block;
      font-size: 12px;
      color: var(--text-light-muted);
      margin-bottom: 6px;
      font-weight: 500;
    }
    .form-input-text {
      width: 100%;
      padding: 11px 14px;
      background: #090C10;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      color: #FFFFFF;
      font-size: 13px;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-input-text:focus {
      border-color: var(--color-primary);
    }
    .form-checkbox-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      margin-top: 6px;
    }
    .checkbox-label {
      font-size: 12px;
      color: var(--text-light-muted);
      display: flex;
      align-items: center;
      gap: 6px;
      cursor: pointer;
    }

    /* 统一页脚体系 (Footer) */
    .site-footer {
      background: #07090D;
      color: var(--text-light-muted);
      border-top: 1px solid var(--border-dark);
      padding: 60px 0 30px;
      font-size: 13px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .footer-brand h3 {
      font-size: 18px;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
      font-size: 13px;
    }
    .footer-col h4 {
      font-size: 14px;
      color: #FFFFFF;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-links-list {
      list-style: none;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list a:hover {
      color: var(--color-primary);
    }
    .footer-bottom-row {
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }
    .footer-copy {
      color: #64748B;
    }
    .footer-icp a {
      color: #64748B;
    }
    .footer-icp a:hover {
      color: var(--color-primary);
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .pain-cards-grid,
      .scenario-grid,
      .news-cards-grid,
      .pkg-compare-grid,
      .testimonial-cards-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .adv-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-timeline::before {
        display: none;
      }
      .bento-col-8, .bento-col-4, .bento-col-6 {
        grid-column: span 12;
      }
      .case-immersive-box {
        grid-template-columns: 1fr;
      }
      .cta-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links, .nav-actions {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .pain-cards-grid,
      .adv-grid,
      .scenario-grid,
      .steps-timeline,
      .stats-flex-container,
      .testimonial-cards-grid,
      .news-cards-grid,
      .pkg-compare-grid,
      .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .stat-box-cell:not(:last-child)::after {
        display: none;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-row {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
      .cta-conversion-box {
        padding: 26px 20px;
      }
    }