/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-light: #2563EB;
      --primary-dark: #1E3A8A;
      --accent: #0D9488;
      --accent-warm: #D97706;
      --dark-slate: #0F172A;
      --dark-surface: #1E293B;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --bg-white: #FFFFFF;
      --bg-light: #F8FAFC;
      --border-color: #E2E8F0;
      --border-focus: #93C5FD;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-hover: 0 12px 30px -4px rgba(37, 99, 235, 0.14);
      --transition: all 0.28s ease-in-out;
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
      line-height: 1.75;
      color: var(--text-main);
      background-color: var(--bg-white);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

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

    /* 顶部微栏与双行导航 */
    .top-meta-bar {
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-muted);
      padding: 6px 0;
    }
    .top-meta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-meta-left span {
      margin-right: 20px;
    }
    .top-meta-right a {
      color: var(--primary-light);
      font-weight: 500;
    }

    .header-main {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      z-index: 1000;
      box-shadow: 0 2px 12px rgba(15, 23, 42, 0.05);
      border-bottom: 1px solid var(--border-color);
    }
    .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;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      fill: var(--primary);
    }
    .brand-tag {
      font-size: 11px;
      padding: 2px 6px;
      background: #EFF6FF;
      color: var(--primary-light);
      border-radius: var(--radius-sm);
      font-weight: 600;
      margin-left: 4px;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-menu li a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }
    .nav-menu li a:hover,
    .nav-menu li a.active {
      color: var(--primary-light);
    }
    .nav-menu li a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary-light);
      border-radius: 2px;
    }

    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      padding: 10px 22px;
      background: var(--primary-light);
      color: #FFF !important;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
    }
    .nav-cta-btn:hover {
      background: var(--primary);
      transform: translateY(-1px);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }

    /* 通用板块样式与大留白规范 */
    .section-block {
      padding: 88px 0;
      position: relative;
    }
    .bg-light-alt {
      background-color: var(--bg-light);
    }
    .bg-dark-contrast {
      background-color: var(--dark-slate);
      color: #F8FAFC;
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 54px;
    }
    .section-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary-light);
      background: #EFF6FF;
      padding: 4px 14px;
      border-radius: 20px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
      border: 1px solid #DBEAFE;
    }
    .section-badge-dark {
      color: #38BDF8;
      background: rgba(56, 189, 248, 0.1);
      border-color: rgba(56, 189, 248, 0.25);
    }
    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      color: inherit;
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-head p {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .bg-dark-contrast .section-head p {
      color: #94A3B8;
    }

    /* 板块 1：Hero 资源检索与拓店方案中心 (蓝图强化) */
    .hero-search-hub {
      position: relative;
      background: linear-gradient(180deg, #EFF6FF 0%, #FFFFFF 100%);
      padding: 80px 0 90px;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: url('/assets/images/787c0472c97c729f.png');
      background-size: cover;
      background-position: center;
      opacity: 0.05;
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }
    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #DBEAFE;
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .hero-pill-dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      display: inline-block;
    }
    .hero-content h1 {
      font-size: 42px;
      font-weight: 800;
      color: #0F172A;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-content h1 span {
      color: var(--primary-light);
    }
    .hero-desc {
      font-size: 17px;
      color: #475569;
      line-height: 1.8;
      margin-bottom: 36px;
      text-align: justify;
      text-justify: inter-ideograph;
    }
    .hero-search-box {
      background: #FFFFFF;
      padding: 8px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 30px -5px rgba(37, 99, 235, 0.15);
      border: 2px solid #BFDBFE;
      display: flex;
      align-items: center;
      max-width: 680px;
      margin: 0 auto 20px;
      gap: 10px;
    }
    .hero-search-input {
      flex: 1;
      border: none;
      padding: 12px 18px;
      outline: none;
      color: var(--text-main);
      font-size: 15px;
    }
    .hero-search-btn {
      background: var(--primary-light);
      color: #FFFFFF;
      border: none;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
    }
    .hero-search-btn:hover {
      background: var(--primary);
    }
    .hero-tags-row {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 40px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .hero-tags-row a {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      color: #334155;
    }
    .hero-tags-row a:hover {
      border-color: var(--primary-light);
      color: var(--primary-light);
    }
    .hero-dashboard-preview {
      position: relative;
      margin-top: 20px;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.18);
      border: 1px solid #CBD5E1;
      background: #FFFFFF;
    }

    /* 板块 2：品牌客户案例展示区 (蓝图客户案例) */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: #BFDBFE;
    }
    .case-card-img {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .case-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-card-img img {
      transform: scale(1.04);
    }
    .case-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.75);
      color: #FFFFFF;
      font-size: 11px;
      padding: 4px 10px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .case-card-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .case-card-body h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: #0F172A;
    }
    .case-card-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex: 1;
    }
    .case-metrics-tag {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
      font-size: 13px;
    }
    .case-metric-item strong {
      color: var(--primary-light);
      font-size: 16px;
    }

    /* 板块 3：硬核量化成果数据条 (蓝图结果数据) */
    .metrics-bar-wrap {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 48px 36px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-color);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-col {
      position: relative;
    }
    .metric-col:not(:last-child)::after {
      content: '';
      position: absolute;
      right: 0;
      top: 15%;
      height: 70%;
      width: 1px;
      background-color: var(--border-color);
    }
    .metric-num {
      font-size: 44px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-num span {
      font-size: 20px;
      font-weight: 600;
      color: var(--accent);
      margin-left: 2px;
    }
    .metric-label {
      font-size: 15px;
      font-weight: 600;
      color: #334155;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 4：传统经验 vs 选址软件数字化对比 (前后对比) */
    .diff-table-container {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }
    .diff-row-head {
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
      background: #F8FAFC;
      border-bottom: 2px solid var(--border-color);
      font-weight: 700;
      font-size: 16px;
      padding: 18px 24px;
    }
    .diff-row {
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
      border-bottom: 1px solid var(--border-color);
      padding: 20px 24px;
      align-items: center;
      font-size: 14px;
      transition: background 0.2s;
    }
    .diff-row:last-child {
      border-bottom: none;
    }
    .diff-row:hover {
      background: #F8FAFC;
    }
    .diff-col-dim {
      font-weight: 600;
      color: #1E293B;
    }
    .diff-col-old {
      color: #64748B;
      padding-right: 20px;
      position: relative;
    }
    .diff-col-new {
      color: var(--primary);
      font-weight: 600;
      background: #EFF6FF;
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--primary-light);
    }

    /* 板块 5：核心方法说明与GIS商圈算法解析 (方法说明) */
    .method-dual-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .method-left-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }
    .method-left-card img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .method-right-content h3 {
      font-size: 26px;
      font-weight: 700;
      color: #0F172A;
      margin-bottom: 20px;
      line-height: 1.35;
    }
    .method-right-content p {
      color: #475569;
      font-size: 15px;
      margin-bottom: 24px;
      line-height: 1.75;
    }
    .method-step-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .method-step-item {
      display: flex;
      gap: 16px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .step-badge {
      width: 32px;
      height: 32px;
      background: var(--primary-light);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      flex-shrink: 0;
    }
    .step-text h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 4px;
      color: #0F172A;
    }
    .step-text p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.6;
    }

    /* 板块 6：核心优势与矩阵分析 (拓展卖点) */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: #FFFFFF;
      padding: 32px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: #93C5FD;
    }
    .feature-icon-box {
      width: 48px;
      height: 48px;
      background: #EFF6FF;
      color: var(--primary-light);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }
    .feature-icon-box svg {
      width: 26px;
      height: 26px;
      fill: currentColor;
    }
    .feature-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      color: #0F172A;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 7：版本介绍与适用业态工作台 (产品线) */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .tier-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .tier-card.featured {
      border: 2px solid var(--primary-light);
      box-shadow: 0 10px 30px -4px rgba(37, 99, 235, 0.2);
    }
    .tier-ribbon {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
    }
    .tier-card h3 {
      font-size: 20px;
      font-weight: 800;
      color: #0F172A;
      margin-bottom: 8px;
    }
    .tier-card .tier-target {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .tier-features-list {
      list-style: none;
      margin-bottom: 30px;
      flex: 1;
    }
    .tier-features-list li {
      font-size: 14px;
      color: #334155;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .tier-features-list li::before {
      content: '✓';
      color: var(--primary-light);
      font-weight: 800;
    }
    .tier-btn {
      display: block;
      text-align: center;
      padding: 12px 20px;
      background: #F1F5F9;
      color: var(--text-main);
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .tier-card.featured .tier-btn {
      background: var(--primary-light);
      color: #FFFFFF;
    }
    .tier-btn:hover {
      background: var(--primary);
      color: #FFFFFF;
    }

    /* 板块 8：深色高对比拓店决策理念区 (Dark Theme) */
    .dark-concept-box {
      border: 1px solid #334155;
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      background: radial-gradient(circle at top right, #1E293B, #0F172A);
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .dark-concept-text h3 {
      font-size: 28px;
      font-weight: 800;
      color: #FFFFFF;
      line-height: 1.35;
      margin-bottom: 20px;
    }
    .dark-concept-text p {
      font-size: 15px;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .dark-badge-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .dark-badge-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 16px;
      border-radius: var(--radius-sm);
    }
    .dark-badge-item strong {
      display: block;
      color: #38BDF8;
      font-size: 16px;
      margin-bottom: 4px;
    }
    .dark-badge-item span {
      font-size: 12px;
      color: #94A3B8;
    }
    .dark-concept-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid #334155;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
    }

    /* 板块 9：选址资讯与行业拓店研究 (行业资讯) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-bottom: 40px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .news-card-thumb {
      height: 180px;
      overflow: hidden;
    }
    .news-card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-card-content {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date-tag {
      font-size: 12px;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .news-card-content h3 {
      font-size: 17px;
      font-weight: 700;
      color: #0F172A;
      line-height: 1.45;
      margin-bottom: 10px;
    }
    .news-card-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      flex: 1;
      margin-bottom: 16px;
    }
    .news-read-more {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-light);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .news-center-btn {
      text-align: center;
    }

    /* 板块 10：常见问题异议拆解手风琴 (异议拆解) */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item[open] {
      border-color: #BFDBFE;
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 16px;
      color: #0F172A;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: '+';
      font-size: 20px;
      color: var(--primary-light);
      font-weight: 400;
      transition: transform 0.2s ease;
    }
    .faq-item[open] .faq-summary::after {
      content: '−';
    }
    .faq-body {
      padding: 0 24px 22px;
      color: #475569;
      font-size: 14px;
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      margin-top: 8px;
      padding-top: 16px;
    }

    /* 板块 11：企业服务安全与合规保障条 (保障承诺) */
    .guarantee-bar-strip {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 40px;
      box-shadow: var(--shadow-sm);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-cell {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .guarantee-icon {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ECFDF5;
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 20px;
      flex-shrink: 0;
    }
    .guarantee-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: #0F172A;
      margin-bottom: 2px;
    }
    .guarantee-info p {
      font-size: 12px;
      color: var(--text-muted);
      margin: 0;
    }

    /* 板块 12：落地页高转化留资表单 (咨询入口/转化收口) */
    .contact-cta-wrapper {
      background: linear-gradient(135deg, #1E40AF 0%, #1E3A8A 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 48px;
      align-items: center;
      box-shadow: 0 20px 40px -10px rgba(30, 64, 175, 0.35);
    }
    .contact-cta-left h3 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .contact-cta-left p {
      font-size: 15px;
      color: #DBEAFE;
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .contact-perks-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 14px;
      color: #EFF6FF;
    }
    .contact-perks-list li {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .contact-perks-list li::before {
      content: '★';
      color: #FBBF24;
    }
    .contact-form-box {
      background: #FFFFFF;
      padding: 32px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-hover);
      color: var(--text-main);
    }
    .form-group-item {
      margin-bottom: 18px;
    }
    .form-group-item label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: #334155;
    }
    .form-input-ctrl {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-input-ctrl:focus {
      border-color: var(--primary-light);
    }
    .form-submit-action {
      width: 100%;
      padding: 14px;
      background: var(--primary-light);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
      transition: var(--transition);
    }
    .form-submit-action:hover {
      background: var(--primary);
    }
    .form-privacy-note {
      font-size: 11px;
      color: var(--text-muted);
      text-align: center;
      margin-top: 12px;
    }

    /* 底部固定转化条 (Sticky CTA Bar) */
    .sticky-bar-float {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(8px);
      color: #FFFFFF;
      padding: 12px 0;
      z-index: 999;
      box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      transform: translateY(100%);
      transition: transform 0.3s ease;
    }
    .sticky-bar-float.is-visible {
      transform: translateY(0);
    }
    .sticky-inner-box {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .sticky-text-info {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .sticky-title {
      font-size: 15px;
      font-weight: 700;
      color: #F8FAFC;
    }
    .sticky-sub {
      font-size: 13px;
      color: #94A3B8;
    }
    .sticky-action-group {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .sticky-tel-link {
      color: #38BDF8;
      font-weight: 700;
      font-size: 15px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .sticky-btn-link {
      background: var(--primary-light);
      color: #FFFFFF;
      padding: 8px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      min-height: 40px;
      display: inline-flex;
      align-items: center;
    }
    .sticky-btn-link:hover {
      background: var(--primary);
    }

    /* 统一现代页脚 (Footer) */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 64px 0 32px;
      border-top: 1px solid #1E293B;
      font-size: 14px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand-title {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-desc {
      font-size: 13px;
      line-height: 1.8;
      color: #64748B;
      margin-bottom: 20px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #F1F5F9;
      margin-bottom: 16px;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list a {
      color: #94A3B8;
      font-size: 13px;
    }
    .footer-links-list a:hover {
      color: #FFFFFF;
    }
    .footer-contact-item {
      margin-bottom: 10px;
      font-size: 13px;
      line-height: 1.6;
    }
    .footer-contact-item strong {
      color: #E2E8F0;
    }
    .footer-bottom-bar {
      border-top: 1px solid #1E293B;
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
      flex-wrap: wrap;
      gap: 14px;
    }

    /* 响应式媒体查询断点 */
    @media (max-width: 1024px) {
      .case-grid,
      .features-grid,
      .tier-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar-wrap {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .metric-col:nth-child(2)::after {
        display: none;
      }
      .method-dual-layout,
      .dark-concept-box,
      .contact-cta-wrapper {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .guarantee-bar-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .section-block {
        padding: 56px 0;
      }
      .top-meta-bar {
        display: none;
      }
      .hero-content h1 {
        font-size: 30px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        display: none;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-menu.is-open {
        display: flex;
      }
      .nav-cta-btn {
        display: none;
      }
      .diff-row-head,
      .diff-row {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 16px;
      }
      .case-grid,
      .features-grid,
      .tier-grid,
      .news-grid {
        grid-template-columns: 1fr;
      }
      .guarantee-bar-strip {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .contact-cta-wrapper {
        padding: 32px 20px;
      }
      .sticky-text-info {
        display: none;
      }
      .sticky-action-group {
        width: 100%;
        justify-content: space-between;
      }
      .sticky-btn-link {
        flex: 1;
        justify-content: center;
        min-height: 48px;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
    }