/* roulang page: index */
:root {
      --primary: #C11B5C;
      --primary-dark: #9E1448;
      --secondary: #1A1D2E;
      --accent: #F5A623;
      --accent-light: rgba(245, 166, 35, 0.25);
      --bg-dark: #0B0D17;
      --bg-card: rgba(26, 29, 46, 0.7);
      --bg-light: #F8F9FC;
      --text-light: #E8ECF1;
      --text-muted: #8892A4;
      --text-dark: #1E2130;
      --border-light: rgba(245, 166, 35, 0.2);
      --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
      --shadow-hover: 0 12px 28px rgba(0, 0, 0, 0.18);
      --radius-card: 16px;
      --radius-btn: 40px;
      --font-heading: 'MiSans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Inter', sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--bg-dark);
      color: var(--text-light);
      margin: 0;
      line-height: 1.75;
      overflow-x: hidden;
    }

    h1, h2, h3, .h1, .h2, .h3 {
      font-family: var(--font-heading);
      font-weight: 700;
    }

    h1 {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      color: white;
    }

    h2 {
      font-size: 34px;
      font-weight: 700;
      position: relative;
      padding-left: 16px;
      margin-bottom: 2rem;
      color: white;
    }

    h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: 8px;
      bottom: 8px;
      width: 5px;
      background: var(--primary);
      border-radius: 4px;
    }

    .section-light h2 {
      color: var(--text-dark);
    }

    h3 {
      font-size: 22px;
      font-weight: 600;
    }

    .container-custom {
      max-width: 1140px;
      margin: 0 auto;
      padding: 0 20px;
    }

    section {
      padding: 100px 0;
    }

    /* 浮动 Dock 导航 */
    .dock-nav {
      position: fixed;
      bottom: 24px;
      left: 50%;
      transform: translateX(-50%);
      width: auto;
      max-width: 720px;
      background: rgba(26, 29, 46, 0.85);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border-light);
      border-radius: 40px;
      padding: 8px 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      z-index: 1000;
      box-shadow: 0 12px 28px rgba(0,0,0,0.6);
    }

    .dock-logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 19px;
      color: white;
      text-decoration: none;
      white-space: nowrap;
    }

    .dock-logo span {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-weight: 800;
    }

    .dock-nav a.nav-link {
      color: #B0B8C8;
      font-size: 15px;
      font-weight: 500;
      text-decoration: none;
      transition: 0.2s;
      padding: 6px 4px;
      white-space: nowrap;
    }

    .dock-nav a.nav-link:hover {
      color: var(--accent);
    }

    .btn-dock {
      background: var(--primary);
      color: white;
      border-radius: 30px;
      padding: 8px 18px;
      font-size: 14px;
      font-weight: 600;
      text-decoration: none;
      transition: 0.25s;
      white-space: nowrap;
    }

    .btn-dock:hover {
      background: var(--primary-dark);
      box-shadow: 0 6px 18px rgba(193, 27, 92, 0.5);
      color: white;
    }

    .btn-primary-custom {
      background: var(--primary);
      border: none;
      color: white;
      font-weight: 600;
      border-radius: 8px;
      padding: 14px 32px;
      transition: all 0.25s;
      text-decoration: none;
      display: inline-block;
    }

    .btn-primary-custom:hover {
      background: var(--primary-dark);
      box-shadow: 0 8px 22px rgba(193, 27, 92, 0.5);
      color: white;
      transform: translateY(-2px);
    }

    .btn-outline-gold {
      border: 2px solid var(--accent);
      color: var(--accent);
      background: transparent;
      font-weight: 600;
      border-radius: 8px;
      padding: 12px 28px;
      transition: 0.25s;
      text-decoration: none;
    }

    .btn-outline-gold:hover {
      background: var(--accent);
      color: #1A1D2E;
      border-color: var(--accent);
    }

    .hero-bg {
      background: radial-gradient(circle at 30% 40%, #2a1e3a, #0B0D17 80%);
      min-height: 90vh;
      display: flex;
      align-items: center;
      position: relative;
    }

    .hero-image {
      border-radius: 24px;
      transform: rotate(1deg);
      border: 1px solid rgba(245,166,35,0.35);
      box-shadow: 0 20px 40px rgba(0,0,0,0.7);
    }

    .pain-card {
      background: var(--bg-card);
      backdrop-filter: blur(8px);
      border-radius: 20px;
      padding: 28px 24px;
      border-left: 5px solid var(--primary);
      transition: 0.3s;
      height: 100%;
    }

    .pain-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 16px 32px rgba(193,27,92,0.2);
    }

    .solution-block {
      background: rgba(255,255,255,0.03);
      border-radius: 28px;
      padding: 30px;
      margin-bottom: 40px;
      backdrop-filter: blur(4px);
    }

    .stat-number {
      font-size: 56px;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.1;
    }

    .testimonial-card {
      background: white;
      border-radius: 20px;
      padding: 32px 24px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.06);
      border-left: 6px solid var(--primary);
      color: #1E2130;
      transition: 0.25s;
    }

    .testimonial-card:hover {
      box-shadow: 0 18px 36px rgba(0,0,0,0.14);
      transform: translateY(-5px);
    }

    .accordion-button:not(.collapsed) {
      background-color: transparent;
      color: var(--primary);
      font-weight: 700;
      box-shadow: none;
      border-left: 4px solid var(--accent);
    }

    .accordion-button {
      font-weight: 600;
      background-color: white;
      color: #1A1D2E;
    }

    .footer-link {
      color: #8892A4;
      text-decoration: none;
      transition: 0.2s;
    }

    .footer-link:hover {
      color: var(--accent);
    }

    @media (max-width: 768px) {
      .dock-nav {
        width: 92%;
        padding: 8px 18px;
        gap: 12px;
        justify-content: space-between;
      }
      .dock-nav .nav-link {
        display: none;
      }
      h1 {
        font-size: 34px;
      }
      h2 {
        font-size: 28px;
      }
      section {
        padding: 60px 0;
      }
      .btn-primary-custom, .btn-outline-gold {
        width: 100%;
        text-align: center;
      }
    }