/* roulang page: index */
:root {
      --primary: #E63946;
      --primary-dark: #C1121F;
      --secondary: #1D3557;
      --accent: #F4A261;
      --bg-light: #F8F9FA;
      --bg-white: #FFFFFF;
      --text-dark: #1E1E1E;
      --text-body: #333333;
      --text-muted: #6C757D;
      --border-light: #DEE2E6;
      --shadow-sm: 0 4px 12px rgba(0,0,0,0.06);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.12);
      --shadow-lg: 0 12px 32px rgba(0,0,0,0.15);
      --radius-md: 12px;
      --radius-sm: 8px;
      --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-heading);
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.8;
      margin: 0;
      scroll-behavior: smooth;
      font-size: 16px;
    }
    h1, h2, h3, h4 {
      font-weight: 700;
      color: var(--text-dark);
    }
    h1 { font-size: 48px; letter-spacing: -0.5px; }
    h2 { font-size: 36px; }
    h3 { font-size: 24px; font-weight: 600; }
    @media (max-width: 768px) {
      h1 { font-size: 32px; }
      h2 { font-size: 28px; }
      h3 { font-size: 20px; }
    }
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 导航栏 */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 4px rgba(0,0,0,0.05);
      z-index: 1000;
      padding: 10px 0;
      border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    .navbar-brand {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary) !important;
      letter-spacing: 1px;
      display: flex;
      align-items: center;
    }
    .navbar-brand i {
      font-size: 32px;
      margin-right: 8px;
      color: var(--secondary);
    }
    .nav-link {
      font-weight: 500;
      color: var(--text-body) !important;
      margin: 0 12px;
      transition: var(--transition);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary) !important;
    }
    .btn-nav-cta {
      background: var(--primary);
      color: white;
      border-radius: 30px;
      padding: 10px 24px;
      font-weight: 600;
      border: none;
      transition: var(--transition);
      margin-left: 16px;
      white-space: nowrap;
    }
    .btn-nav-cta:hover {
      background: var(--primary-dark);
      box-shadow: 0 0 12px rgba(230,57,70,0.5);
    }
    .badge-countdown {
      background: var(--accent);
      color: #1E1E1E;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 20px;
      margin-left: 12px;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      white-space: nowrap;
    }
    .navbar-toggler {
      border: none;
      color: var(--secondary);
      font-size: 24px;
    }
    @media (max-width: 768px) {
      .navbar-collapse {
        background: white;
        border-radius: 12px;
        padding: 20px;
        margin-top: 10px;
        box-shadow: var(--shadow-md);
      }
      .navbar-nav {
        text-align: center;
      }
      .btn-nav-cta {
        margin-top: 12px;
        width: 100%;
      }
    }
    /* Hero */
    .hero-section {
      background: linear-gradient(135deg, rgba(29,53,87,0.75) 0%, rgba(29,53,87,0.8) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 90vh;
      display: flex;
      align-items: center;
      color: white;
      padding: 140px 0 80px;
      position: relative;
    }
    .hero-title {
      font-size: 52px;
      font-weight: 800;
      text-shadow: 2px 4px 12px rgba(0,0,0,0.4);
      line-height: 1.2;
    }
    .live-badge {
      background: var(--primary);
      color: white;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 14px;
      font-weight: 700;
      animation: pulse 1.5s infinite;
      display: inline-block;
    }
    @keyframes pulse {
      0% { opacity: 1; }
      50% { opacity: 0.7; }
      100% { opacity: 1; }
    }
    .score-card {
      background: rgba(255,255,255,0.15);
      backdrop-filter: blur(10px);
      border-radius: 16px;
      padding: 20px 24px;
      color: white;
      font-weight: 700;
      border: 1px solid rgba(255,255,255,0.25);
    }
    .btn-hero {
      background: var(--primary);
      border: none;
      padding: 14px 40px;
      font-size: 20px;
      font-weight: 700;
      border-radius: 40px;
      color: white;
      transition: var(--transition);
      animation: gentleBounce 2s infinite;
    }
    .btn-hero:hover {
      background: var(--primary-dark);
      box-shadow: 0 0 20px rgba(230,57,70,0.7);
    }
    @keyframes gentleBounce {
      0%,100% { transform: translateY(0); }
      50% { transform: translateY(-5px); }
    }
    /* 痛点卡片 */
    .pain-card {
      background: #EDF2F4;
      border-radius: var(--radius-md);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border: 1px solid #e0e6ea;
    }
    .pain-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .solution-card {
      background: white;
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      border-left: 6px solid var(--primary);
      transition: var(--transition);
    }
    .solution-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .stat-block {
      background: var(--secondary);
      border-radius: 20px;
      padding: 32px 16px;
      color: white;
    }
    .stat-number {
      font-size: 40px;
      font-weight: 800;
      color: white;
      line-height: 1.2;
    }
    .testimonial-card {
      background: white;
      border-radius: 20px;
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      text-align: center;
    }
    .testimonial-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .avatar-placeholder {
      width: 70px;
      height: 70px;
      background: #ced4da;
      border-radius: 50%;
      margin: 0 auto 15px;
      background-size: cover;
      background-position: center;
      border: 3px solid var(--primary);
    }
    .faq-accordion .accordion-button:not(.collapsed) {
      background-color: white;
      color: var(--primary);
      font-weight: 700;
      box-shadow: none;
      border-left: 4px solid var(--primary);
    }
    .accordion-button:focus {
      box-shadow: none;
      border-color: var(--primary);
    }
    .cta-full {
      background: linear-gradient(135deg, #E63946 0%, #1D3557 100%);
      border-radius: 32px;
      padding: 70px 40px;
      color: white;
    }
    .btn-cta-large {
      background: white;
      color: var(--primary);
      font-weight: 800;
      font-size: 22px;
      padding: 16px 48px;
      border-radius: 50px;
      border: none;
      transition: var(--transition);
    }
    .btn-cta-large:hover {
      background: #f8f9fa;
      box-shadow: 0 0 24px rgba(255,255,255,0.6);
    }
    footer {
      background: var(--secondary);
      color: #ccc;
    }
    footer a {
      color: #ddd;
      text-decoration: none;
    }
    footer a:hover {
      color: var(--primary);
    }
    @media (max-width: 576px) {
      .hero-title {
        font-size: 30px;
      }
      .btn-hero {
        width: 100%;
      }
    }