/* roulang page: index */
:root {
      --primary: #1E293B;
      --brand-accent: #0F766E;
      --cta-action: #D97706;
      --cta-hover: #B45309;
      --dark-surface: #0F172A;
      --light-surface: #F8FAFC;
      --white: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --card-radius: 10px;
      --shadow-sm: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
      --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      color: var(--text-body);
      background-color: var(--white);
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* 顶部双行导航系统 */
    .top-bar {
      background-color: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.8125rem;
      color: var(--text-muted);
      padding: 0.45rem 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-links span {
      margin-left: 1.25rem;
    }

    .main-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.03);
    }
    .main-nav .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-badge-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--brand-accent), #134E4A);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      font-weight: 800;
      font-size: 1rem;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.75rem;
    }
    .nav-item a {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      padding: 0.5rem 0;
    }
    .nav-item a:hover, .nav-item a.active {
      color: var(--brand-accent);
    }
    .nav-item a.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--brand-accent);
    }
    .nav-cta {
      background-color: var(--cta-action);
      color: var(--white) !important;
      padding: 0.625rem 1.25rem;
      border-radius: 6px;
      font-weight: 600;
      font-size: 0.875rem;
      box-shadow: 0 4px 10px rgba(217, 119, 6, 0.2);
    }
    .nav-cta:hover {
      background-color: var(--cta-hover);
      transform: translateY(-1px);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--primary);
      cursor: pointer;
    }

    /* 板块通用规范 */
    .section-block {
      padding: 5.5rem 0;
      position: relative;
    }
    .bg-white { background-color: var(--white); }
    .bg-light { background-color: var(--light-surface); }
    .bg-dark { background-color: var(--dark-surface); color: var(--white); }
    
    .section-header {
      margin-bottom: 3.5rem;
      max-width: 820px;
    }
    .section-header.text-center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--brand-accent);
      background-color: #CCFBF1;
      padding: 0.25rem 0.75rem;
      border-radius: 4px;
      margin-bottom: 0.85rem;
    }
    .bg-dark .section-tag {
      background-color: rgba(15, 118, 110, 0.25);
      color: #5EEAD4;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 1.15rem;
      letter-spacing: -0.015em;
    }
    .bg-dark .section-title {
      color: var(--white);
    }
    .section-desc {
      font-size: 1.0625rem;
      line-height: 1.8;
      color: var(--text-muted);
    }
    .bg-dark .section-desc {
      color: #94A3B8;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      font-weight: 600;
      border-radius: 6px;
      padding: 0.85rem 1.75rem;
      transition: var(--transition);
      cursor: pointer;
      border: 1px solid transparent;
      font-size: 0.9375rem;
    }
    .btn-primary {
      background-color: var(--cta-action);
      color: var(--white);
      box-shadow: 0 4px 14px rgba(217, 119, 6, 0.35);
    }
    .btn-primary:hover {
      background-color: var(--cta-hover);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background-color: var(--white);
      color: var(--brand-accent);
      border-color: var(--brand-accent);
    }
    .btn-secondary:hover {
      background-color: #F0FDFA;
      transform: translateY(-2px);
    }
    .btn-ghost-light {
      background-color: transparent;
      color: var(--white);
      border-color: rgba(255, 255, 255, 0.3);
    }
    .btn-ghost-light:hover {
      background-color: rgba(255, 255, 255, 0.1);
      border-color: var(--white);
    }

    /* 板块 1: Hero 首屏 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 41, 59, 0.85) 100%),
                  url('/assets/images/e78b64fdcaeb2774.png') center/cover no-repeat;
      padding: 6.5rem 0 7rem;
      color: var(--white);
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
    }
    .hero-h1 {
      font-size: 3rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 1.5rem;
      letter-spacing: -0.02em;
    }
    .hero-h1 span {
      color: #FBBF24;
    }
    .hero-intro {
      font-size: 1.125rem;
      line-height: 1.85;
      color: #CBD5E1;
      margin-bottom: 2.25rem;
      max-width: 620px;
    }
    .hero-actions {
      display: flex;
      gap: 1.25rem;
      flex-wrap: wrap;
      margin-bottom: 2.5rem;
    }
    .hero-highlights {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.25rem;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding-top: 1.75rem;
    }
    .highlight-item strong {
      display: block;
      font-size: 1.5rem;
      color: #38BDF8;
      margin-bottom: 0.25rem;
    }
    .highlight-item span {
      font-size: 0.8125rem;
      color: #94A3B8;
    }
    .hero-card-board {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--card-radius);
      padding: 2.25rem;
      box-shadow: var(--shadow-lg);
    }
    .hero-board-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1.5rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 1rem;
    }
    .hero-board-title {
      font-weight: 700;
      font-size: 1.125rem;
      color: var(--white);
    }
    .hero-board-badge {
      font-size: 0.75rem;
      padding: 0.25rem 0.6rem;
      background: var(--brand-accent);
      border-radius: 4px;
      color: var(--white);
    }
    .hero-step-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1.15rem;
    }
    .hero-step-item {
      display: flex;
      gap: 1rem;
      font-size: 0.9375rem;
      color: #E2E8F0;
    }
    .hero-step-num {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: rgba(217, 119, 6, 0.25);
      color: #FBBF24;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8125rem;
      font-weight: 700;
      flex-shrink: 0;
    }

    /* 板块 2: 定义区图文网格 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .intro-content p {
      margin-bottom: 1.25rem;
      font-size: 1rem;
      color: var(--text-body);
    }
    .intro-features {
      margin-top: 2rem;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }
    .intro-feat-box {
      border-left: 3px solid var(--brand-accent);
      padding-left: 1rem;
      background: var(--light-surface);
      padding: 0.75rem 1rem;
      border-radius: 0 6px 6px 0;
    }
    .intro-feat-box h4 {
      font-size: 0.9375rem;
      margin-bottom: 0.25rem;
      color: var(--text-main);
    }
    .intro-feat-box p {
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }
    .intro-visual img {
      border-radius: var(--card-radius);
      box-shadow: var(--shadow-lg);
      object-fit: cover;
      width: 100%;
      height: 380px;
    }

    /* 板块 3: 核心优势六宫格 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .adv-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2.25rem 1.75rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 20px -3px rgba(0,0,0,0.08);
      border-color: var(--brand-accent);
    }
    .adv-icon-wrap {
      width: 48px;
      height: 48px;
      background: #E6FFFA;
      color: var(--brand-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .adv-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .adv-text {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 4: 服务矩阵三列 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      align-items: stretch;
    }
    .matrix-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2.5rem 2rem;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .matrix-card.featured {
      border: 2px solid var(--brand-accent);
      box-shadow: 0 10px 25px -5px rgba(15, 118, 110, 0.15);
      transform: scale(1.02);
    }
    .matrix-badge-top {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--brand-accent);
      color: var(--white);
      font-size: 0.75rem;
      padding: 0.25rem 0.85rem;
      border-radius: 20px;
      font-weight: 600;
    }
    .matrix-header {
      text-align: center;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 1.5rem;
      margin-bottom: 1.75rem;
    }
    .matrix-name {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .matrix-subtitle {
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .matrix-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
      margin-bottom: 2rem;
      flex-grow: 1;
    }
    .matrix-item {
      font-size: 0.9375rem;
      display: flex;
      align-items: flex-start;
      gap: 0.65rem;
      color: var(--text-body);
    }
    .matrix-item::before {
      content: "✓";
      color: var(--brand-accent);
      font-weight: 800;
      flex-shrink: 0;
    }

    /* 板块 5: 场景演示三栏 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .scenario-box {
      background: var(--white);
      border-radius: var(--card-radius);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .scenario-box img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .scenario-content {
      padding: 1.75rem;
    }
    .scenario-tag {
      font-size: 0.75rem;
      color: var(--cta-action);
      font-weight: 700;
      margin-bottom: 0.5rem;
      display: block;
    }
    .scenario-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .scenario-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 6: 深色案例沉浸区 */
    .dark-case-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
    }
    .dark-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--card-radius);
      padding: 2.5rem;
    }
    .dark-card-bad {
      border-left: 4px solid #EF4444;
    }
    .dark-card-good {
      border-left: 4px solid #10B981;
    }
    .dark-card h3 {
      font-size: 1.35rem;
      margin-bottom: 1.25rem;
      color: var(--white);
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .dark-card-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1.15rem;
      font-size: 0.9375rem;
      color: #CBD5E1;
    }

    /* 板块 7: 建设标准对比表 */
    .diff-table-wrap {
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      overflow: hidden;
      background: var(--white);
      box-shadow: var(--shadow-sm);
    }
    .diff-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .diff-table th, .diff-table td {
      padding: 1.25rem 1.75rem;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.9375rem;
    }
    .diff-table th {
      background: #F1F5F9;
      font-weight: 700;
      color: var(--text-main);
    }
    .diff-table th:first-child { width: 25%; }
    .diff-table th:nth-child(2) { width: 37.5%; color: var(--text-muted); }
    .diff-table th:nth-child(3) { width: 37.5%; color: var(--brand-accent); background: #E6FFFA; }
    .diff-table td:nth-child(3) { background: #F0FDFA; font-weight: 600; color: #0F766E; }

    /* 板块 8: 标杆故事图文 */
    .story-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      box-shadow: var(--shadow-sm);
    }
    .story-card img {
      width: 100%;
      height: 100%;
      min-height: 380px;
      object-fit: cover;
    }
    .story-content {
      padding: 3rem 2.5rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-tag {
      font-size: 0.8125rem;
      color: var(--brand-accent);
      font-weight: 700;
      margin-bottom: 0.5rem;
    }
    .story-title {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 1rem;
    }
    .story-body {
      font-size: 0.9375rem;
      color: var(--text-body);
      margin-bottom: 1.5rem;
      line-height: 1.8;
    }
    .story-metric-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
      border-top: 1px solid var(--border-color);
      padding-top: 1.5rem;
    }
    .story-metric-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--cta-action);
    }
    .story-metric-label {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 板块 9: 关键数据指标条 */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0F766E 0%, #115E59 100%);
      color: var(--white);
      padding: 4rem 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-cell strong {
      font-size: 3rem;
      font-weight: 800;
      display: block;
      line-height: 1.1;
      margin-bottom: 0.5rem;
      color: #FEF08A;
    }
    .metric-cell span {
      font-size: 0.9375rem;
      color: #E6FFFA;
      letter-spacing: 0.02em;
    }

    /* 板块 10: 客户评价三列网格 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .review-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--card-radius);
      padding: 2.25rem 1.75rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 1rem;
    }
    .review-text {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      border-top: 1px solid #F1F5F9;
      padding-top: 1rem;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info h4 {
      font-size: 0.9375rem;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 板块 11: 资讯与前沿动态 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .insight-card {
      background: var(--white);
      border-radius: var(--card-radius);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .insight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .insight-card img {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }
    .insight-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .insight-meta {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 0.65rem;
    }
    .insight-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.4;
    }
    .insight-excerpt {
      font-size: 0.875rem;
      color: var(--text-body);
      margin-bottom: 1.25rem;
      line-height: 1.65;
      flex-grow: 1;
    }
    .insight-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--brand-accent);
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }

    /* 板块 12: 异议拆解 FAQ */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: 8px;
      background: var(--white);
      overflow: hidden;
    }
    .faq-question {
      padding: 1.35rem 1.75rem;
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question::after {
      content: '+';
      font-size: 1.4rem;
      color: var(--brand-accent);
      font-weight: 400;
      transition: transform 0.2s ease;
    }
    .faq-item.active .faq-question::after {
      content: '−';
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #F8FAFC;
    }
    .faq-answer-inner {
      padding: 1.25rem 1.75rem;
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.8;
      border-top: 1px solid var(--border-color);
    }

    /* 板块 13: 交付与安全保障条 */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .guarantee-box {
      border: 1px solid var(--border-color);
      background: var(--white);
      border-radius: var(--card-radius);
      padding: 1.75rem 1.25rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .guarantee-icon {
      font-size: 2rem;
      margin-bottom: 0.75rem;
    }
    .guarantee-box h4 {
      font-size: 1rem;
      color: var(--text-main);
      margin-bottom: 0.35rem;
    }
    .guarantee-box p {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 板块 14: 底部强刺激行动与轻表单 */
    .cta-final-box {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: 16px;
      padding: 4.5rem 3.5rem;
      color: var(--white);
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .cta-text-area h2 {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1.25rem;
    }
    .cta-text-area p {
      font-size: 1rem;
      color: #94A3B8;
      line-height: 1.75;
      margin-bottom: 2rem;
    }
    .cta-meta-points {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      font-size: 0.875rem;
      color: #CBD5E1;
    }
    .cta-meta-points li::before {
      content: "•";
      color: #FBBF24;
      margin-right: 0.5rem;
      font-weight: 800;
    }
    .cta-form-area {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 12px;
      padding: 2.25rem;
      backdrop-filter: blur(8px);
    }
    .cta-form-area form {
      display: flex;
      flex-direction: column;
      gap: 1.15rem;
    }
    .form-group label {
      display: block;
      font-size: 0.8125rem;
      color: #CBD5E1;
      margin-bottom: 0.4rem;
    }
    .form-control {
      width: 100%;
      padding: 0.75rem 1rem;
      border-radius: 6px;
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(15, 23, 42, 0.6);
      color: var(--white);
      font-size: 0.9375rem;
    }
    .form-control:focus {
      outline: none;
      border-color: #38BDF8;
    }
    .form-submit-btn {
      background-color: var(--cta-action);
      color: var(--white);
      border: none;
      padding: 0.9rem;
      font-weight: 700;
      border-radius: 6px;
      cursor: pointer;
      font-size: 1rem;
      transition: var(--transition);
      margin-top: 0.5rem;
    }
    .form-submit-btn:hover {
      background-color: var(--cta-hover);
    }
    .form-privacy-note {
      font-size: 0.75rem;
      color: #64748B;
      text-align: center;
      margin-top: 0.25rem;
    }

    /* 底部固定转化条（移动端高频） */
    .floating-cta-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 0.75rem 1.5rem;
      z-index: 999;
      display: none;
      box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.15);
    }
    .floating-cta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      max-width: 1240px;
      margin: 0 auto;
    }
    .floating-cta-info {
      color: var(--white);
      font-size: 0.875rem;
    }
    .floating-cta-info span {
      display: block;
      font-size: 0.75rem;
      color: #94A3B8;
    }

    /* 页脚系统 */
    .site-footer {
      background-color: #090E1A;
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      font-size: 0.875rem;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h3 {
      color: var(--white);
      font-size: 1.25rem;
      margin-bottom: 1rem;
    }
    .footer-brand p {
      line-height: 1.8;
      font-size: 0.875rem;
      margin-bottom: 1.25rem;
    }
    .footer-col h4 {
      color: var(--white);
      font-size: 1rem;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-links a:hover {
      color: #5EEAD4;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 2rem;
      text-align: center;
      font-size: 0.8125rem;
      color: #64748B;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
    }
    .footer-bottom a {
      color: #94A3B8;
    }
    .footer-bottom a:hover {
      color: var(--white);
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
      .advantages-grid, .matrix-grid, .scenario-grid, .reviews-grid, .insights-grid { grid-template-columns: repeat(2, 1fr); }
      .metrics-grid, .guarantee-grid { grid-template-columns: repeat(2, 1fr); }
      .story-card { grid-template-columns: 1fr; }
      .story-card img { height: 260px; min-height: auto; }
      .cta-final-box { grid-template-columns: 1fr; padding: 3rem 2rem; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .section-block { padding: 3.5rem 0; }
      .hero-h1 { font-size: 2.25rem; }
      .advantages-grid, .matrix-grid, .scenario-grid, .dark-case-grid, .reviews-grid, .insights-grid { grid-template-columns: 1fr; }
      .intro-grid { grid-template-columns: 1fr; gap: 2rem; }
      .intro-features { grid-template-columns: 1fr; }
      .menu-toggle { display: block; }
      .nav-menu {
        position: fixed;
        top: 72px;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: calc(100vh - 72px);
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem 1.5rem;
        box-shadow: -4px 0 15px rgba(0,0,0,0.1);
        transition: right 0.3s ease;
      }
      .nav-menu.open {
        right: 0;
      }
      .diff-table th, .diff-table td { padding: 0.75rem 0.5rem; font-size: 0.8125rem; }
      .floating-cta-bar { display: block; }
      body { padding-bottom: 60px; }
      .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    }