/* roulang page: index */
/* CSS 变量与设计规范系统 */
    :root {
      --primary: #185ABD;
      --primary-hover: #124694;
      --primary-light: #EFF6FF;
      --accent: #22C55E;
      --accent-lime: #A3E635;
      --accent-glow: rgba(34, 197, 94, 0.25);
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-dark: #0F172A;
      --bg-dark-card: #1E293B;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-sub: #64748B;
      --border-color: #E2E8F0;
      --border-light: #F1F5F9;
      --border-dark: #334155;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.03);
      --shadow-hover: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
      --container-max: 1240px;
    }

    /* 基础重置 */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-muted);
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    button, input, select, textarea {
      font: inherit;
      outline: none;
    }

    /* 通用容器与排版 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section {
      padding: 96px 0;
      position: relative;
    }
    .section-alt {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 56px;
      text-align: center;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .section-badge-dark {
      background-color: rgba(34, 197, 94, 0.15);
      color: var(--accent-lime);
      border: 1px solid rgba(163, 230, 53, 0.3);
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 18px;
    }
    .section-title-dark {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-sub);
      max-width: 760px;
      margin: 0 auto;
      line-height: 1.7;
    }
    .section-desc-dark {
      color: #94A3B8;
    }

    /* 顶部双行导航系统 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .header-topbar {
      background-color: var(--bg-dark);
      color: #94A3B8;
      font-size: 0.8rem;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topbar-left {
      display: flex;
      gap: 20px;
    }
    .topbar-right {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .status-pulse {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #E2E8F0;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent);
      animation: pulseAnimation 2s infinite;
    }
    @keyframes pulseAnimation {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }
    .header-main {
      padding: 14px 0;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--primary);
    }
    .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), #2563EB);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: 900;
      font-size: 1.1rem;
      box-shadow: 0 4px 10px rgba(24, 90, 189, 0.25);
    }
    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-muted);
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: var(--transition);
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      min-height: 44px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(24, 90, 189, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(24, 90, 189, 0.35);
    }
    .btn-outline {
      border-color: var(--border-color);
      background-color: #FFFFFF;
      color: var(--text-muted);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFFFFF;
    }
    .btn-accent:hover {
      background-color: #16A34A;
      transform: translateY(-2px);
    }
    .btn-dark {
      background-color: #1E293B;
      color: #FFFFFF;
      border-color: #334155;
    }
    .btn-dark:hover {
      background-color: #334155;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-main);
      padding: 8px;
    }

    /* 1. Hero 蓝图：白皮书与技术报告获客结构 */
    .hero-section {
      padding: 70px 0 80px;
      background: radial-gradient(circle at 85% 20%, rgba(24, 90, 189, 0.08) 0%, transparent 45%),
                  radial-gradient(circle at 10% 70%, rgba(34, 197, 94, 0.05) 0%, transparent 40%),
                  #F8FAFC;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-badge-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 20px;
    }
    .hero-badge {
      display: inline-block;
      padding: 5px 12px;
      background-color: rgba(24, 90, 189, 0.1);
      color: var(--primary);
      font-size: 0.82rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
    }
    .hero-kpi-pill {
      font-size: 0.85rem;
      font-weight: 600;
      color: #166534;
      background-color: #DCFCE7;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.22;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title .highlight {
      color: var(--primary);
      position: relative;
    }
    .hero-intro {
      font-size: 1.12rem;
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 32px;
    }
    .hero-highlights-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 32px;
    }
    .hero-highlight-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.92rem;
      color: var(--text-muted);
    }
    .hero-highlight-item span.icon-check {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      background-color: #DCFCE7;
      color: #16A34A;
      border-radius: 50%;
      font-size: 0.75rem;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* Hero 右侧白皮书获客卡片 */
    .whitepaper-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .whitepaper-cover-wrap {
      display: flex;
      gap: 20px;
      margin-bottom: 24px;
      align-items: center;
      padding-bottom: 20px;
      border-bottom: 1px dashed var(--border-color);
    }
    .whitepaper-img {
      width: 105px;
      height: 135px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-md);
      flex-shrink: 0;
      border: 2px solid #FFFFFF;
    }
    .whitepaper-meta h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 6px;
      font-weight: 700;
    }
    .whitepaper-meta p {
      font-size: 0.85rem;
      color: var(--text-sub);
      line-height: 1.5;
    }
    .toc-title {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      justify-content: space-between;
    }
    .toc-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .toc-list li {
      font-size: 0.85rem;
      color: var(--text-muted);
      padding: 6px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-light);
    }
    .hero-lead-form {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .lead-input {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 0.92rem;
      background-color: #F8FAFC;
      transition: var(--transition);
    }
    .lead-input:focus {
      border-color: var(--primary);
      background-color: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(24, 90, 189, 0.12);
    }

    /* 2. 适用人群板块 */
    .user-persona-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .persona-card {
      background-color: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .persona-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }
    .persona-icon {
      width: 50px;
      height: 50px;
      border-radius: var(--radius-md);
      background-color: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.25rem;
      margin-bottom: 20px;
    }
    .persona-card h3 {
      font-size: 1.2rem;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .persona-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .persona-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .persona-tag {
      font-size: 0.75rem;
      padding: 4px 8px;
      background-color: #F1F5F9;
      border-radius: 4px;
      color: var(--text-sub);
    }

    /* 3. 适用准入标准：谁适合 / 谁不适合对比 */
    .fit-comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .fit-col {
      background-color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      border-top: 4px solid var(--accent);
    }
    .fit-col-not {
      border-top-color: #94A3B8;
      background-color: #F8FAFC;
    }
    .fit-col h3 {
      font-size: 1.35rem;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .fit-col p.fit-desc {
      font-size: 0.95rem;
      color: var(--text-sub);
      margin-bottom: 24px;
      line-height: 1.6;
    }
    .fit-checklist {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .fit-checklist li {
      display: flex;
      gap: 12px;
      font-size: 0.92rem;
      line-height: 1.5;
    }
    .fit-tag-icon {
      font-weight: bold;
      flex-shrink: 0;
      width: 22px;
      height: 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      font-size: 0.8rem;
    }
    .icon-pass { background-color: #DCFCE7; color: #16A34A; }
    .icon-fail { background-color: #F1F5F9; color: #64748B; }

    /* 4. 行业痛点区 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pain-card {
      background-color: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 32px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .pain-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, #EF4444, #F97316);
    }
    .pain-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .pain-badge {
      font-size: 0.8rem;
      font-weight: 700;
      color: #DC2626;
      background-color: #FEE2E2;
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 16px;
    }
    .pain-card h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .pain-card p {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 5. 系统化匹配方案区（交错图文） */
    .solution-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
      margin-bottom: 80px;
    }
    .solution-block:last-child {
      margin-bottom: 0;
    }
    .solution-block.reverse {
      direction: rtl;
    }
    .solution-block.reverse .solution-content {
      direction: ltr;
    }
    .solution-block.reverse .solution-visual {
      direction: ltr;
    }
    .solution-visual {
      position: relative;
    }
    .solution-img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      width: 100%;
      height: 380px;
    }
    .solution-kpi-badge {
      position: absolute;
      bottom: 20px;
      right: 20px;
      background-color: rgba(15, 23, 42, 0.9);
      color: #FFFFFF;
      padding: 14px 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .solution-kpi-badge .kpi-num {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--accent-lime);
      line-height: 1;
      display: block;
      margin-bottom: 4px;
    }
    .solution-kpi-badge .kpi-lbl {
      font-size: 0.8rem;
      color: #94A3B8;
    }
    .solution-content h3 {
      font-size: 1.85rem;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .solution-content p {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .feature-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
    }
    .feature-item-icon {
      color: var(--primary);
      font-weight: 800;
      margin-top: 2px;
    }

    /* 6. 核心能力矩阵（6宫格） */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .matrix-card {
      background-color: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .matrix-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: #BFDBFE;
    }
    .matrix-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md;
      background-color: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      margin-bottom: 20px;
      font-weight: 700;
    }
    .matrix-card h3 {
      font-size: 1.18rem;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .matrix-card p {
      font-size: 0.9rem;
      color: var(--text-sub);
      line-height: 1.65;
    }

    /* 7. 产品矩阵与终端矩阵（3列） */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .product-card {
      background-color: var(--bg-card);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .product-cover-wrap {
      position: relative;
      height: 220px;
      overflow: hidden;
    }
    .product-cover {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .product-card:hover .product-cover {
      transform: scale(1.05);
    }
    .product-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background-color: rgba(15, 23, 42, 0.85);
      color: #FFFFFF;
      font-size: 0.78rem;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      backdrop-filter: blur(4px);
    }
    .product-body {
      padding: 30px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .product-body h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .product-body p {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .product-spec-list {
      list-style: none;
      padding: 16px 0;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
      margin-bottom: 24px;
    }
    .product-spec-list li {
      font-size: 0.85rem;
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
      padding: 5px 0;
    }
    .product-spec-list li span:last-child {
      font-weight: 600;
      color: var(--text-main);
    }

    /* 8. 四步标准化接入流程 */
    .steps-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .step-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .step-num {
      width: 44px;
      height: 44px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 20px;
      border: 2px solid #BFDBFE;
    }
    .step-card h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .step-card p {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 9. 深色架构与案例区 */
    .deep-case-box {
      background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-dark);
      padding: 60px;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }
    .case-left h3 {
      font-size: 2rem;
      color: #FFFFFF;
      line-height: 1.3;
      margin-bottom: 20px;
      font-weight: 800;
    }
    .case-left p {
      font-size: 1rem;
      color: #94A3B8;
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .case-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 32px;
    }
    .case-pill {
      font-size: 0.82rem;
      padding: 6px 14px;
      background-color: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      color: #E2E8F0;
    }
    .case-stats-panel {
      background-color: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 32px;
      backdrop-filter: blur(10px);
    }
    .stat-row-item {
      padding: 16px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .stat-row-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .stat-row-item span.label {
      color: #94A3B8;
      font-size: 0.9rem;
    }
    .stat-row-item span.val {
      color: var(--accent-lime);
      font-size: 1.25rem;
      font-weight: 700;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }

    /* 10. 成果数据指标条 */
    .metrics-bar-section {
      background-color: #FFFFFF;
      padding: 64px 0;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .metrics-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-bar-item {
      padding: 0 16px;
      border-right: 1px solid var(--border-color);
    }
    .metric-bar-item:last-child {
      border-right: none;
    }
    .metric-num {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 10px;
      letter-spacing: -0.5px;
    }
    .metric-lbl {
      font-size: 0.95rem;
      color: var(--text-sub);
      font-weight: 500;
    }

    /* 11. 适用故事与用户故事区 */
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }
    .story-card {
      background-color: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .story-header {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 20px;
    }
    .story-badge {
      font-size: 0.8rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      background-color: var(--primary-light);
      color: var(--primary);
    }
    .story-card h3 {
      font-size: 1.35rem;
      color: var(--text-main);
      margin-bottom: 16px;
      font-weight: 700;
      line-height: 1.4;
    }
    .story-body {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.75;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .story-quote-bar {
      border-left: 3px solid var(--accent);
      padding-left: 16px;
      font-style: italic;
      color: var(--text-muted);
      font-size: 0.9rem;
      background-color: #F8FAFC;
      padding: 12px 16px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }

    /* 12. 客户证言评价区 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background-color: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .testi-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .testi-rating {
      color: #F59E0B;
      font-size: 1rem;
      margin-bottom: 16px;
      letter-spacing: 2px;
    }
    .testi-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-light);
      padding-top: 18px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background-color: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .author-info h4 {
      font-size: 0.95rem;
      color: var(--text-main);
      font-weight: 700;
    }
    .author-info p {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* 13. 资讯与行业分析动态区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background-color: var(--bg-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .news-img {
      height: 180px;
      width: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-sub);
      margin-bottom: 8px;
    }
    .news-body h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
      line-height: 1.45;
    }
    .news-body p {
      font-size: 0.88rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 14. 保障说明图标条 */
    .guarantee-bar {
      background-color: #F1F5F9;
      border-radius: var(--radius-lg);
      padding: 32px 40px;
      margin-bottom: 60px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .guarantee-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background-color: #FFFFFF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      box-shadow: var(--shadow-sm);
      flex-shrink: 0;
    }
    .guarantee-info h4 {
      font-size: 0.98rem;
      color: var(--text-main);
      font-weight: 700;
      margin-bottom: 2px;
    }
    .guarantee-info p {
      font-size: 0.82rem;
      color: var(--text-sub);
      line-height: 1.4;
    }

    /* 15. FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background-color: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      padding: 20px 24px;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: background-color 0.2s;
    }
    .faq-question:hover {
      background-color: #F8FAFC;
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      color: var(--text-sub);
      transition: transform 0.28s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background-color: #FFFFFF;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 22px;
    }
    .faq-answer p {
      font-size: 0.95rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* 16. 咨询预约与表单收口区 */
    .final-cta-section {
      background: linear-gradient(135deg, #185ABD 0%, #0F172A 100%);
      color: #FFFFFF;
      padding: 90px 0;
      position: relative;
    }
    .cta-card-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
    }
    .cta-left h2 {
      font-size: 2.35rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 18px;
    }
    .cta-left p {
      font-size: 1.05rem;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .cta-checklist {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .cta-checklist li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.92rem;
      color: #E2E8F0;
    }
    .cta-form-box {
      background-color: #FFFFFF;
      border-radius: var(--radius-xl);
      padding: 36px;
      color: var(--text-muted);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
    }
    .cta-form-box h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .cta-form-box p.form-sub {
      font-size: 0.85rem;
      color: var(--text-sub);
      margin-bottom: 24px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      font-size: 0.92rem;
      background-color: #F8FAFC;
      transition: var(--transition);
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--primary);
      background-color: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(24, 90, 189, 0.15);
    }

    /* 统一页脚 Footer */
    .site-footer {
      background-color: #0B1120;
      color: #94A3B8;
      padding-top: 72px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      color: #FFFFFF;
      margin-bottom: 20px;
      font-weight: 700;
    }
    .footer-logo-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-logo-title span.tag {
      font-size: 0.75rem;
      background-color: var(--primary);
      color: #FFFFFF;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .footer-desc {
      line-height: 1.7;
      margin-bottom: 20px;
      font-size: 0.88rem;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.88rem;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 28px 0;
      text-align: center;
      font-size: 0.82rem;
      color: #64748B;
    }
    .footer-bottom-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }
    .trust-credentials {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1199px) {
      .user-persona-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .product-grid, .news-grid, .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-row {
        grid-template-columns: repeat(2, 1fr);
      }
      .guarantee-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 767px) {
      .header-topbar {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #FFFFFF;
        flex-direction: column;
        padding: 20px 24px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border-color);
        gap: 14px;
      }
      .nav-links.active {
        display: flex;
      }
      .header-actions .btn-outline {
        display: none;
      }
      .hero-grid, .cta-card-wrapper, .deep-case-box, .solution-block, .fit-comparison-grid, .stories-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .solution-block.reverse {
        direction: ltr;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .hero-highlights-list {
        grid-template-columns: 1fr;
      }
      .user-persona-grid, .pain-grid, .matrix-grid, .product-grid, .steps-row, .testimonials-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .metrics-bar-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
      }
      .metric-bar-item {
        border-right: none;
      }
      .guarantee-bar {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-content {
        flex-direction: column;
        text-align: center;
      }
      .deep-case-box {
        padding: 30px 20px;
      }
    }