/* roulang page: index */
:root {
      --yellow: #F5A623;
      --yellow-hover: #E09510;
      --deep-blue: #0F1A2E;
      --cold-white: #F8FAFC;
      --border-light: #E2E8F0;
      --text-slate: #475569;
      --success-green: #10B981;
      --alert-red: #EF4444;
      --card-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.04);
      --card-hover-shadow: 0 8px 24px rgba(0,0,0,0.08);
      --radius-card: 12px;
      --radius-btn: 8px;
      --transition: 0.25s ease;
      --font-number: 'Inter', 'Roboto', system-ui, sans-serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      background-color: var(--cold-white);
      color: var(--text-slate);
      line-height: 1.7;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition);
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 导航卡片面板 */
    .nav-card {
      position: fixed;
      top: 15px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 30px);
      max-width: 1200px;
      background: rgba(255,255,255,0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: 20px;
      padding: 12px 24px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.06);
      display: flex;
      align-items: center;
      justify-content: space-between;
      z-index: 100;
      border: 1px solid rgba(226,232,240,0.6);
    }
    .logo {
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--deep-blue);
      display: flex;
      align-items: center;
      gap: 6px;
      letter-spacing: -0.3px;
    }
    .logo i {
      color: var(--yellow);
      font-size: 1.6rem;
    }
    .nav-links {
      display: flex;
      gap: 8px;
      align-items: center;
      flex-wrap: wrap;
    }
    .nav-links a {
      padding: 8px 14px;
      border-radius: 30px;
      font-weight: 500;
      font-size: 0.9rem;
      color: var(--deep-blue);
      background: transparent;
      transition: all var(--transition);
      display: flex;
      align-items: center;
      gap: 4px;
      white-space: nowrap;
    }
    .nav-links a i {
      font-size: 0.9rem;
      color: var(--yellow);
    }
    .nav-links a:hover {
      background: rgba(245,166,35,0.08);
      color: #0F1A2E;
    }
    .nav-links a.active {
      background: rgba(245,166,35,0.12);
      border-left: 3px solid var(--yellow);
      font-weight: 600;
    }
    .nav-cta {
      background: var(--yellow);
      color: var(--deep-blue);
      font-weight: 700;
      padding: 10px 22px;
      border-radius: 30px;
      font-size: 0.9rem;
      transition: all var(--transition);
      box-shadow: 0 2px 8px rgba(245,166,35,0.25);
      white-space: nowrap;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-cta:hover {
      background: var(--yellow-hover);
      box-shadow: 0 0 0 3px rgba(245,166,35,0.3);
      color: var(--deep-blue);
    }
    .hamburger {
      display: none;
      font-size: 1.8rem;
      cursor: pointer;
      color: var(--deep-blue);
    }
    /* 移动端导航 */
    @media (max-width: 840px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 20px;
        right: 20px;
        background: white;
        flex-direction: column;
        padding: 20px;
        border-radius: 20px;
        box-shadow: var(--card-hover-shadow);
        gap: 10px;
      }
      .nav-links.active-mob {
        display: flex;
      }
      .hamburger {
        display: block;
      }
      .nav-cta.desktop-cta {
        display: none;
      }
    }
    @media (min-width: 841px) {
      .nav-cta.mobile-cta {
        display: none;
      }
    }
    section {
      padding: 80px 0;
    }
    h2 {
      font-size: 32px;
      font-weight: 700;
      color: var(--deep-blue);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-sub {
      color: var(--text-slate);
      font-size: 1.1rem;
      margin-bottom: 40px;
    }
    /* Hero */
    .hero {
      padding: 140px 0 80px;
      background: var(--cold-white);
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 50px;
    }
    .hero-left h1 {
      font-size: 48px;
      font-weight: 700;
      color: var(--deep-blue);
      line-height: 1.2;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }
    .hero-left .sub {
      font-size: 1.2rem;
      color: var(--text-slate);
      margin-bottom: 30px;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--yellow);
      color: var(--deep-blue);
      font-weight: 700;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      transition: all var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: var(--yellow-hover);
      box-shadow: 0 0 0 3px rgba(245,166,35,0.3);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--deep-blue);
      color: var(--deep-blue);
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: all var(--transition);
    }
    .btn-outline:hover {
      background: var(--deep-blue);
      color: white;
    }
    .score-mock {
      background: var(--deep-blue);
      border-radius: 24px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 20px;
      min-width: 300px;
      border: 1px solid rgba(255,255,255,0.1);
      backdrop-filter: blur(4px);
    }
    .match-card {
      background: rgba(255,255,255,0.08);
      border-radius: 14px;
      padding: 14px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: white;
      border: 1px solid rgba(255,255,255,0.15);
    }
    .live-badge {
      color: var(--alert-red);
      font-weight: 700;
      font-size: 0.7rem;
      animation: pulse 1.2s infinite;
    }
    @keyframes pulse { 0%{opacity:1;} 50%{opacity:0.5;} 100%{opacity:1;} }
    .score-num {
      font-family: var(--font-number);
      font-weight: 800;
      font-size: 1.6rem;
      color: var(--yellow);
    }
    /* 数据看板反向区块 */
    .dashboard {
      background: var(--deep-blue);
      color: white;
      border-radius: 32px;
      margin: 20px;
    }
    .dashboard .container {
      padding: 60px 20px;
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 24px;
    }
    .metric-card {
      background: rgba(255,255,255,0.06);
      border-radius: 18px;
      padding: 24px;
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255,255,255,0.1);
    }
    .metric-icon {
      font-size: 2rem;
      color: var(--yellow);
    }
    .metric-value {
      font-size: 36px;
      font-weight: 800;
      font-family: var(--font-number);
      color: var(--yellow);
    }
    /* 服务矩阵非对称 */
    .services-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 24px;
    }
    .service-wide {
      grid-column: span 2;
      background: white;
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-light);
      display: flex;
      gap: 20px;
    }
    .service-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 24px;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--border-light);
      transition: all var(--transition);
    }
    .service-card:hover, .service-wide:hover {
      box-shadow: var(--card-hover-shadow);
      transform: translateY(-2px);
    }
    .compare-container {
      display: flex;
      gap: 30px;
      align-items: center;
    }
    .compare-box {
      flex:1;
      background: white;
      border-radius: 20px;
      padding: 28px;
      box-shadow: var(--card-shadow);
    }
    .vs-icon {
      font-size: 2rem;
      color: var(--yellow);
    }
    .process-steps {
      display: flex;
      justify-content: space-between;
      text-align: center;
    }
    .faq-item {
      background: white;
      border-radius: 12px;
      margin-bottom: 12px;
      border: 1px solid var(--border-light);
    }
    .faq-question {
      padding: 18px 24px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }
    .footer {
      background: var(--deep-blue);
      color: #CBD5E1;
      padding: 60px 0 30px;
    }
    @media (max-width: 768px) {
      .hero-grid { flex-direction: column; }
      .metric-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: 1fr; }
      .service-wide { grid-column: span 1; flex-direction: column; }
      .compare-container { flex-direction: column; }
      .process-steps { flex-direction: column; gap: 20px; }
    }