/* roulang page: index */
:root {
      --primary: #0F2B48;
      --primary-dark: #0A192F;
      --primary-light: #1E5084;
      --accent-gradient: linear-gradient(135deg, #1E5084 0%, #008080 100%);
      --accent-teal: #008080;
      --gold: #D4AF37;
      --gold-soft: rgba(212, 175, 55, 0.15);
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-pill: 999px;
      --shadow-sm: 0 4px 6px -1px rgba(15, 43, 72, 0.05);
      --shadow-md: 0 10px 30px -5px rgba(15, 43, 72, 0.08), 0 4px 10px rgba(0, 0, 0, 0.03);
      --shadow-lg: 0 20px 40px -10px rgba(15, 43, 72, 0.15);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
      -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: inherit;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      min-height: 46px;
    }
    .btn-gradient {
      background: var(--accent-gradient);
      color: #fff;
      box-shadow: 0 4px 14px rgba(0, 128, 128, 0.3);
    }
    .btn-gradient:hover {
      box-shadow: 0 8px 24px rgba(0, 128, 128, 0.45);
      transform: translateY(-2px);
      color: #fff;
    }
    .btn-outline {
      border-color: rgba(255, 255, 255, 0.35);
      color: #fff;
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(8px);
    }
    .btn-outline:hover {
      background: #fff;
      color: var(--primary);
      border-color: #fff;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
      font-size: 0.8rem;
      font-weight: 600;
      background: var(--gold-soft);
      color: #926C05;
      border: 1px solid rgba(212, 175, 55, 0.35);
    }
    .badge::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: currentColor;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-header h2 {
      font-size: 2.1rem;
      color: var(--primary);
      margin-bottom: 16px;
      font-weight: 700;
      letter-spacing: -0.5px;
    }
    .section-header p {
      color: var(--text-muted);
      font-size: 1.05rem;
    }
    /* 顶部辅助条 */
    .topbar {
      height: 38px;
      background: var(--primary-dark);
      color: #94A3B8;
      font-size: 0.8rem;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .topbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topbar-links {
      display: flex;
      gap: 20px;
      align-items: center;
    }
    .topbar-phone {
      color: var(--gold);
      font-weight: 600;
    }
    /* 主导航 */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .navbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
    }
    .brand-icon {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background: var(--accent-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 1rem;
      box-shadow: 0 4px 10px rgba(0, 128, 128, 0.25);
    }
    .nav-menu {
      display: flex;
      gap: 32px;
      list-style: none;
    }
    .nav-menu a {
      font-weight: 600;
      color: #334155;
      font-size: 0.95rem;
      position: relative;
    }
    .nav-menu a:hover {
      color: var(--accent-teal);
    }
    .nav-menu a.active {
      color: var(--accent-teal);
    }
    .nav-menu a.active::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--accent-teal);
      border-radius: 2px;
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--primary);
      cursor: pointer;
    }
    /* Hero 斜切色块 */
    .hero-section {
      position: relative;
      background-color: var(--primary-dark);
      background-image: linear-gradient(145deg, rgba(10, 25, 47, 0.94) 0%, rgba(15, 43, 72, 0.92) 50%, rgba(0, 128, 128, 0.82) 100%), url('/assets/images/dcbcceb08f5a2fb8.webp');
      background-size: cover;
      background-position: center;
      color: #fff;
      padding: 100px 0 140px;
      clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.8rem;
      line-height: 1.25;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin: 18px 0 22px;
      text-shadow: 0 4px 20px rgba(0,0,0,0.3);
    }
    .hero-content h1 span {
      background: linear-gradient(90deg, #FFFFFF 0%, #A5F3FC 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.1rem;
      color: #CBD5E1;
      margin-bottom: 34px;
      max-width: 620px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      margin-bottom: 40px;
    }
    .hero-highlights {
      display: flex;
      gap: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding-top: 24px;
    }
    .hero-highlights-item {
      display: flex;
      flex-direction: column;
    }
    .hero-highlights-item .val {
      font-size: 1.4rem;
      font-weight: 700;
      color: var(--gold);
    }
    .hero-highlights-item .label {
      font-size: 0.8rem;
      color: #94A3B8;
    }
    .hero-stage {
      position: relative;
    }
    .hero-stage-card {
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 16px;
      box-shadow: var(--shadow-lg);
    }
    .hero-stage-card img {
      border-radius: calc(var(--radius-lg) - 4px);
      box-shadow: 0 10px 25px rgba(0,0,0,0.3);
      width: 100%;
      height: auto;
      object-fit: cover;
    }
    .float-chip {
      position: absolute;
      background: rgba(15, 43, 72, 0.9);
      border: 1px solid rgba(212, 175, 55, 0.4);
      backdrop-filter: blur(8px);
      padding: 12px 18px;
      border-radius: var(--radius-md);
      color: #fff;
      display: flex;
      align-items: center;
      gap: 12px;
      box-shadow: 0 12px 30px rgba(0,0,0,0.35);
      animation: floatSlow 5s ease-in-out infinite;
    }
    .float-chip-1 {
      top: -20px;
      right: -20px;
    }
    .float-chip-2 {
      bottom: -25px;
      left: -20px;
      animation-delay: 2.5s;
    }
    @keyframes floatSlow {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }
    .float-num {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--gold);
      line-height: 1;
    }
    .float-text {
      font-size: 0.78rem;
      color: #CBD5E1;
    }
    /* 通用Section间距与背景 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .bg-white {
      background: #FFFFFF;
    }
    .bg-light {
      background: #F8FAFC;
    }
    .bg-dark {
      background: var(--primary-dark);
      color: #fff;
    }
    /* 痛点对比区 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: #FFFFFF;
      border: 1px solid #F1F5F9;
      border-radius: var(--radius-md);
      padding: 32px 28px;
      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: 4px;
      background: #E2E8F0;
      transition: var(--transition);
    }
    .pain-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .pain-card:hover::before {
      background: #EF4444;
    }
    .pain-title {
      font-size: 1.18rem;
      font-weight: 700;
      color: #1E293B;
      margin: 14px 0 10px;
    }
    .pain-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: #EF4444;
      background: #FEE2E2;
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
    }
    .pain-desc {
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }
    /* 解决方案 / 金融认证 */
    .solution-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .solution-img-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .solution-img-box img {
      width: 100%;
      height: 440px;
      object-fit: cover;
    }
    .solution-overlay-stat {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(15, 43, 72, 0.88);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-md);
      padding: 18px 24px;
      color: #fff;
      display: flex;
      justify-content: space-around;
    }
    .solution-overlay-item {
      text-align: center;
    }
    .solution-overlay-item .val {
      font-size: 1.3rem;
      font-weight: 800;
      color: #38BDF8;
    }
    .solution-overlay-item .lbl {
      font-size: 0.75rem;
      color: #94A3B8;
    }
    .solution-content h2 {
      font-size: 2.1rem;
      color: var(--primary);
      margin-bottom: 20px;
      font-weight: 700;
    }
    .solution-content p {
      color: var(--text-muted);
      margin-bottom: 24px;
      font-size: 1rem;
      line-height: 1.7;
    }
    .cert-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
    }
    .cert-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 14px;
    }
    .cert-icon {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: rgba(0, 128, 128, 0.1);
      color: var(--accent-teal);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      flex-shrink: 0;
    }
    .cert-info h4 {
      font-size: 0.92rem;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .cert-info p {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.4;
    }
    /* 核心优势六卡 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 32px 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .advantage-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 15px 35px -5px rgba(0, 128, 128, 0.15);
      border-color: rgba(0, 128, 128, 0.35);
    }
    .advantage-icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(30, 80, 132, 0.1) 0%, rgba(0, 128, 128, 0.15) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      color: var(--accent-teal);
      font-weight: 800;
      margin-bottom: 20px;
    }
    .advantage-card h3 {
      font-size: 1.2rem;
      color: var(--primary);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .advantage-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    /* 场景产品矩阵 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      align-items: stretch;
    }
    .product-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px 30px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .product-card.featured {
      border: 2px solid var(--accent-teal);
      transform: translateY(-8px);
      box-shadow: var(--shadow-lg);
    }
    .product-tag-float {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent-teal);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      letter-spacing: 0.5px;
    }
    .product-head {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 20px;
      margin-bottom: 20px;
    }
    .product-head h3 {
      font-size: 1.35rem;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .product-head p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .product-features {
      list-style: none;
      margin-bottom: 30px;
      flex-grow: 1;
    }
    .product-features li {
      font-size: 0.9rem;
      color: #334155;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .product-features li::before {
      content: "✓";
      color: var(--accent-teal);
      font-weight: bold;
      background: rgba(0, 128, 128, 0.1);
      border-radius: 50%;
      width: 18px;
      height: 18px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.7rem;
      flex-shrink: 0;
    }
    /* 架构区深墨蓝 */
    .arch-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
      position: relative;
    }
    .arch-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      backdrop-filter: blur(8px);
      transition: var(--transition);
    }
    .arch-card:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(0, 128, 128, 0.6);
      transform: translateY(-4px);
    }
    .arch-layer {
      font-size: 0.75rem;
      color: var(--gold);
      font-weight: 700;
      letter-spacing: 1px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .arch-card h3 {
      font-size: 1.15rem;
      color: #fff;
      margin-bottom: 10px;
    }
    .arch-card p {
      font-size: 0.85rem;
      color: #94A3B8;
      line-height: 1.6;
    }
    /* 落地流程 */
    .step-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      font-size: 0.95rem;
    }
    .step-item h4 {
      font-size: 1.1rem;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .step-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    /* 指标统计条 */
    .metrics-bar {
      background: var(--accent-gradient);
      color: #fff;
      padding: 60px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-item .val {
      font-size: 2.8rem;
      font-weight: 800;
      letter-spacing: -1px;
      margin-bottom: 4px;
      color: #FFFFFF;
    }
    .metric-item .lbl {
      font-size: 0.95rem;
      color: #E0F2FE;
      font-weight: 500;
    }
    /* 深度业务复盘故事 */
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      box-shadow: var(--shadow-md);
    }
    .story-content {
      padding: 48px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent-teal);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 12px;
    }
    .story-content h3 {
      font-size: 1.6rem;
      color: var(--primary);
      margin-bottom: 16px;
      line-height: 1.4;
    }
    .story-content p {
      color: var(--text-muted);
      font-size: 0.96rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .story-quote {
      border-left: 3px solid var(--gold);
      padding-left: 16px;
      font-style: italic;
      color: #334155;
      font-size: 0.92rem;
      margin-bottom: 24px;
    }
    .story-metrics-inline {
      display: flex;
      gap: 32px;
    }
    .story-metric .num {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
    }
    .story-metric .desc {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .story-media {
      position: relative;
    }
    .story-media img {
      width: 100%;
      height: 100%;
      min-height: 380px;
      object-fit: cover;
    }
    /* 客户证言评价墙 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .case-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
    }
    .case-stars {
      color: #F59E0B;
      letter-spacing: 2px;
      font-size: 0.9rem;
    }
    .case-org-badge {
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      background: #F1F5F9;
      color: var(--primary);
      font-weight: 600;
    }
    .case-quote {
      font-size: 0.92rem;
      color: #334155;
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .case-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .case-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.85rem;
    }
    .case-author-info h4 {
      font-size: 0.9rem;
      color: var(--primary);
    }
    .case-author-info span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    /* 资讯摘要 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .news-img {
      height: 200px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .news-card:hover .news-img img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-body h3 {
      font-size: 1.12rem;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--accent-teal);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    /* FAQ手风琴 */
    .faq-layout {
      display: grid;
      grid-template-columns: 0.8fr 1.2fr;
      gap: 50px;
      align-items: start;
    }
    .faq-intro h2 {
      font-size: 2.1rem;
      color: var(--primary);
      margin-bottom: 16px;
      font-weight: 700;
    }
    .faq-intro p {
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .accordion-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      transition: var(--transition);
    }
    .accordion-header {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 1rem;
      color: var(--primary);
      background: #FFFFFF;
      user-select: none;
    }
    .accordion-icon {
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: #F1F5F9;
      color: var(--primary);
      font-size: 0.8rem;
      transition: transform 0.3s ease;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFAFA;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.7;
    }
    .accordion-item.active {
      border-color: var(--accent-teal);
    }
    .accordion-item.active .accordion-icon {
      transform: rotate(180deg);
      background: var(--accent-teal);
      color: #fff;
    }
    .accordion-item.active .accordion-content {
      padding: 18px 24px 22px;
      max-height: 300px;
    }
    /* 转化表单 */
    .contact-wrapper {
      background: linear-gradient(145deg, #0A192F 0%, #0F2B48 100%);
      border-radius: var(--radius-lg);
      padding: 60px;
      color: #fff;
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 60px;
      align-items: center;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .contact-info h2 {
      font-size: 2.2rem;
      margin-bottom: 18px;
      font-weight: 800;
      line-height: 1.3;
    }
    .contact-info p {
      color: #94A3B8;
      font-size: 1rem;
      line-height: 1.7;
      margin-bottom: 32px;
    }
    .contact-guarantees {
      list-style: none;
    }
    .contact-guarantees li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: #E2E8F0;
      margin-bottom: 14px;
    }
    .contact-guarantees li span {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: rgba(0, 128, 128, 0.25);
      border: 1px solid var(--accent-teal);
      color: var(--accent-teal);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: bold;
    }
    .form-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 36px;
      color: var(--text-main);
      box-shadow: 0 15px 35px rgba(0,0,0,0.25);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      transition: var(--transition);
      background: #F8FAFC;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--accent-teal);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(0, 128, 128, 0.15);
    }
    select.form-control {
      cursor: pointer;
    }
    .form-submit-btn {
      width: 100%;
      height: 48px;
      background: var(--accent-gradient);
      border: none;
      border-radius: var(--radius-pill);
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(0, 128, 128, 0.35);
      transition: var(--transition);
    }
    .form-submit-btn:hover {
      box-shadow: 0 8px 24px rgba(0, 128, 128, 0.5);
      transform: translateY(-2px);
    }
    .form-privacy-tip {
      font-size: 0.75rem;
      color: var(--text-muted);
      text-align: center;
      margin-top: 12px;
    }
    /* 页脚四列 */
    .site-footer {
      background: #060F1E;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.88rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr 0.9fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-desc {
      line-height: 1.7;
      margin-bottom: 18px;
      font-size: 0.85rem;
      color: #64748B;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--accent-teal);
    }
    .footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      margin-bottom: 12px;
      font-size: 0.85rem;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.78rem;
      color: #64748B;
    }
    .footer-cert-tags {
      display: flex;
      gap: 12px;
    }
    .footer-cert-tag {
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.75rem;
    }
    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; gap: 40px; }
      .hero-stage { max-width: 600px; margin: 0 auto; }
      .solution-split { grid-template-columns: 1fr; gap: 40px; }
      .advantage-grid { grid-template-columns: repeat(2, 1fr); }
      .product-grid { grid-template-columns: 1fr; }
      .product-card.featured { transform: none; }
      .arch-grid { grid-template-columns: repeat(2, 1fr); }
      .step-flow { grid-template-columns: repeat(2, 1fr); }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .story-card { grid-template-columns: 1fr; }
      .story-media img { min-height: 280px; }
      .cases-grid { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: 1fr; }
      .faq-layout { grid-template-columns: 1fr; }
      .contact-wrapper { grid-template-columns: 1fr; padding: 40px; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .topbar { display: none; }
      .navbar { height: 64px; }
      .nav-toggle { display: block; }
      .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 30px 24px;
        gap: 20px;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }
      .nav-menu.show {
        transform: translateX(0);
      }
      .hero-content h1 { font-size: 2.1rem; }
      .hero-highlights { flex-direction: column; gap: 14px; }
      .pain-grid { grid-template-columns: 1fr; }
      .advantage-grid { grid-template-columns: 1fr; }
      .arch-grid { grid-template-columns: 1fr; }
      .step-flow { grid-template-columns: 1fr; }
      .metrics-grid { grid-template-columns: 1fr; }
      .story-content { padding: 24px; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
      .contact-wrapper { padding: 24px 18px; }
      .form-card { padding: 24px 18px; }
    }