/* roulang page: index */
:root {
      --primary-deep: #0B0E2E;
      --accent-purple: #7B4B9A;
      --gold-light: #F0E68C;
      --bg-soft: #FAFAFF;
      --card-bg: #FFFFFF;
      --text-dark: #1E1B2E;
      --text-soft: #5A5570;
      --border-light: rgba(123, 75, 154, 0.15);
      --shadow-sm: 0 4px 20px rgba(11, 14, 46, 0.06);
      --shadow-hover: 0 8px 30px rgba(123, 75, 154, 0.12);
      --radius-card: 12px;
      --radius-btn: 8px;
      --font-h1: 2.8rem;
      --font-h2: 2rem;
      --font-h3: 1.25rem;
      --font-body: 1rem;
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      background-color: var(--bg-soft);
      color: var(--text-dark);
      margin: 0;
      line-height: 1.75;
      font-size: var(--font-body);
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4 {
      font-weight: 600;
      margin-top: 0;
    }
    h1 {
      font-size: var(--font-h1);
      font-weight: 700;
      letter-spacing: -0.5px;
      line-height: 1.2;
      color: var(--primary-deep);
    }
    h2 {
      font-size: var(--font-h2);
      line-height: 1.3;
      color: var(--primary-deep);
      margin-bottom: 1.5rem;
      position: relative;
    }
    h2::after {
      content: '';
      display: block;
      width: 60px;
      height: 3px;
      background: var(--accent-purple);
      margin-top: 0.5rem;
      border-radius: 4px;
    }
    h3 {
      font-size: var(--font-h3);
      line-height: 1.4;
      color: var(--primary-deep);
    }
    a {
      color: var(--accent-purple);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: #5e3a78;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 2rem;
    }
    /* 导航分屏布局 */
    .nav-hero-wrapper {
      display: flex;
      min-height: 90vh;
      background: linear-gradient(135deg, #0B0E2E 0%, #1A1D40 100%);
      position: relative;
      overflow: hidden;
    }
    .nav-hero-wrapper::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: radial-gradient(rgba(240, 230, 140, 0.08) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
    }
    .nav-side {
      width: 40%;
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      padding: 2.5rem 2rem;
      background: rgba(11, 14, 46, 0.9);
      backdrop-filter: blur(8px);
      z-index: 2;
      border-right: 1px solid rgba(123, 75, 154, 0.3);
    }
    .logo-area {
      margin-bottom: 3rem;
    }
    .logo {
      font-size: 2rem;
      font-weight: 700;
      color: #fff;
      letter-spacing: 1px;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .logo i {
      color: var(--gold-light);
      font-size: 2.2rem;
    }
    .nav-menu {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 1.2rem;
    }
    .nav-menu li a {
      color: rgba(255,255,255,0.8);
      font-size: 1.1rem;
      font-weight: 500;
      padding: 0.5rem 0;
      display: flex;
      align-items: center;
      gap: 0.8rem;
      transition: 0.2s;
      border-left: 3px solid transparent;
      padding-left: 15px;
    }
    .nav-menu li a i {
      width: 20px;
      color: var(--gold-light);
    }
    .nav-menu li a:hover,
    .nav-menu li a.active {
      color: #fff;
      border-left-color: var(--accent-purple);
      background: rgba(123, 75, 154, 0.2);
      border-radius: 0 8px 8px 0;
    }
    .hero-side {
      width: 60%;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 3rem 2rem;
      position: relative;
    }
    .hero-content {
      max-width: 600px;
      color: #fff;
    }
    .hero-content h1 {
      color: #fff;
      font-size: 3.2rem;
      margin-bottom: 1.5rem;
      text-shadow: 0 4px 20px rgba(0,0,0,0.3);
    }
    .hero-sub {
      font-size: 1.2rem;
      color: rgba(255,255,255,0.85);
      margin-bottom: 2rem;
      line-height: 1.7;
    }
    .btn-primary {
      background: var(--accent-purple);
      color: #fff;
      font-weight: 600;
      padding: 0.9rem 2.2rem;
      border-radius: var(--radius-btn);
      border: none;
      font-size: 1.1rem;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      transition: var(--transition);
      box-shadow: 0 8px 18px rgba(123, 75, 154, 0.35);
      text-decoration: none;
    }
    .btn-primary:hover {
      background: #8e5eb0;
      box-shadow: 0 10px 22px rgba(123, 75, 154, 0.5);
      color: #fff;
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--accent-purple);
      color: var(--accent-purple);
      padding: 0.7rem 1.8rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: 0.25s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline:hover {
      background: rgba(123, 75, 154, 0.08);
      color: #5e3a78;
    }
    .mobile-header {
      display: none;
    }
    /* 板块通用 */
    section {
      padding: 5rem 0;
    }
    .section-title {
      text-align: center;
      margin-bottom: 3rem;
    }
    .section-title h2 {
      display: inline-block;
    }
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 2rem 1.8rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border: 1px solid var(--border-light);
    }
    .card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .icon-purple {
      font-size: 2.5rem;
      color: var(--accent-purple);
      margin-bottom: 1rem;
    }
    .scenario-row {
      display: flex;
      gap: 2rem;
      align-items: center;
      margin-bottom: 3rem;
      background: var(--card-bg);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .scenario-row.reverse {
      flex-direction: row-reverse;
    }
    .scenario-text {
      padding: 2.5rem;
      flex: 1;
    }
    .scenario-img {
      flex: 1;
      min-height: 280px;
      background-size: cover;
      background-position: center;
    }
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .case-card {
      background: #fff;
      border-radius: var(--radius-card);
      padding: 2rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .case-avatar {
      width: 70px;
      height: 70px;
      border-radius: 50%;
      background-size: cover;
      margin: 0 auto 1rem;
    }
    .big-number {
      font-size: 2.5rem;
      font-weight: 700;
      color: var(--gold-light);
    }
    .faq-accordion .accordion-item {
      background: #fff;
      border-radius: 10px;
      margin-bottom: 1rem;
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
      border-left: 4px solid var(--accent-purple);
    }
    .accordion-title {
      font-weight: 600;
      font-size: 1.1rem;
      padding: 1rem 1.5rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .accordion-content {
      padding: 0 1.5rem 1.2rem;
      display: none;
      color: var(--text-soft);
    }
    .accordion-content.show {
      display: block;
    }
    .cta-full {
      background: linear-gradient(120deg, #0B0E2E, #2A1E3C);
      color: #fff;
      text-align: center;
      padding: 5rem 2rem;
      border-radius: 24px;
      margin: 3rem 0;
    }
    footer {
      background: var(--primary-deep);
      color: #ddd;
      padding: 4rem 2rem 2rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 2rem;
    }
    @media (max-width: 1024px) {
      .nav-hero-wrapper {
        flex-direction: column;
      }
      .nav-side {
        width: 100%;
        position: fixed;
        top: 0;
        left: 0;
        height: auto;
        z-index: 50;
        flex-direction: row;
        justify-content: space-between;
        padding: 1rem 2rem;
        background: #0B0E2E;
      }
      .nav-menu {
        display: none;
      }
      .hero-side {
        width: 100%;
        margin-top: 80px;
      }
      .mobile-header {
        display: flex;
      }
      .cards-grid, .case-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 640px) {
      h1 { font-size: 2.2rem; }
      .scenario-row, .scenario-row.reverse {
        flex-direction: column;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }