/* roulang page: index */
:root {
      --primary-deep-green: #0A3D2C;
      --secondary-gold: #D4AF37;
      --bg-dark-charcoal: #1A1A1A;
      --card-dark-bg: #242424;
      --card-transparent-green: rgba(15, 47, 36, 0.8);
      --text-white: #FFFFFF;
      --text-light-gray: #B0B0B0;
      --border-gold-subtle: rgba(212, 175, 55, 0.3);
      --border-gold-strong: rgba(212, 175, 55, 0.7);
      --shadow-card: 0 10px 30px -10px rgba(0,0,0,0.6);
      --shadow-gold-glow: 0 15px 40px -10px rgba(212, 175, 55, 0.4);
      --font-heading: 'Poppins', 'Montserrat', 'Helvetica Neue', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      --font-mono: 'Roboto Mono', 'DIN Alternate', monospace;
      --radius-lg: 16px;
      --radius-sm: 8px;
      --transition-smooth: all 0.25s ease;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--bg-dark-charcoal);
      color: var(--text-white);
      line-height: 1.8;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
      letter-spacing: 0.3px;
    }

    h1, h2, h3, h4, .nav-brand, .btn, .data-number {
      font-family: var(--font-heading);
      font-weight: 700;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-smooth);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    /* 自定义Bootstrap覆盖 */
    .btn-primary {
      background-color: var(--secondary-gold);
      border-color: var(--secondary-gold);
      color: #0A2C1A;
      font-weight: 700;
      border-radius: var(--radius-sm);
      padding: 0.75rem 2rem;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 10px rgba(212,175,55,0.3);
    }
    .btn-primary:hover, .btn-primary:focus {
      background-color: #e5c65c;
      border-color: #e5c65c;
      color: #051f14;
      box-shadow: 0 0 20px rgba(212,175,55,0.7);
      transform: translateY(-2px);
    }
    .btn-outline-light {
      border: 1px solid var(--secondary-gold);
      color: var(--secondary-gold);
      background: transparent;
      border-radius: var(--radius-sm);
      padding: 0.75rem 2rem;
      font-weight: 600;
      transition: var(--transition-smooth);
    }
    .btn-outline-light:hover {
      background-color: var(--primary-deep-green);
      color: white;
      border-color: var(--secondary-gold);
    }
    .btn-outline-gold {
      border: 1px solid var(--secondary-gold);
      color: var(--secondary-gold);
      background: transparent;
      border-radius: var(--radius-sm);
      padding: 0.5rem 1.5rem;
      font-weight: 600;
    }
    .btn-outline-gold:hover {
      background-color: var(--secondary-gold);
      color: #0A3D2C;
    }

    /* 导航 */
    .navbar {
      background: rgba(10, 61, 44, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-gold-subtle);
      padding: 0.5rem 0;
    }
    .navbar-brand {
      font-size: 1.6rem;
      font-weight: 800;
      color: white !important;
      display: flex;
      align-items: center;
      gap: 8px;
      letter-spacing: -0.5px;
    }
    .navbar-brand i {
      color: var(--secondary-gold);
      font-size: 2rem;
    }
    .nav-link {
      color: rgba(255,255,255,0.9) !important;
      font-weight: 500;
      margin: 0 8px;
      transition: var(--transition-smooth);
    }
    .nav-link:hover, .nav-link.active {
      color: var(--secondary-gold) !important;
    }
    .search-icon {
      color: white;
      font-size: 1.2rem;
      margin-right: 1rem;
      cursor: pointer;
    }
    .search-icon:hover {
      color: var(--secondary-gold);
    }
    .navbar-toggler {
      border-color: var(--secondary-gold);
    }
    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(212, 175, 55, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* Hero区域 */
    .hero-section {
      background: linear-gradient(135deg, rgba(10,61,44,0.75) 0%, rgba(26,26,26,0.9) 70%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 90vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }
    .hero-section::before {
      content: "";
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: radial-gradient(circle at 30% 40%, rgba(212,175,55,0.15) 0%, transparent 50%);
    }
    .hero-title {
      font-size: 3.8rem;
      font-weight: 800;
      text-shadow: 0 0 30px rgba(212,175,55,0.4);
      letter-spacing: -1px;
    }
    .gold-text {
      color: var(--secondary-gold);
    }
    .hero-sub {
      font-size: 1.3rem;
      color: #ccc;
      margin: 1.5rem 0 2rem;
    }

    /* 板块通用 */
    .section-padding {
      padding: 5rem 0;
    }
    .section-title {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: white;
    }
    .section-subtitle {
      color: var(--text-light-gray);
      font-size: 1.1rem;
      margin-bottom: 3rem;
    }
    .gold-divider {
      width: 60px;
      height: 3px;
      background: var(--secondary-gold);
      margin: 1rem auto;
    }

    /* 数据卡片 */
    .stat-card {
      background: var(--card-dark-bg);
      border-radius: var(--radius-lg);
      padding: 2rem 1.5rem;
      text-align: center;
      border: 1px solid var(--border-gold-subtle);
      transition: var(--transition-smooth);
    }
    .stat-card:hover {
      border-color: var(--secondary-gold);
      box-shadow: var(--shadow-gold-glow);
    }
    .data-number {
      font-family: var(--font-mono);
      font-size: 3rem;
      color: var(--secondary-gold);
      font-weight: 700;
    }

    /* 特色服务 - 不对称网格 */
    .feature-large-card {
      background: var(--card-transparent-green);
      backdrop-filter: blur(5px);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      border: 1px solid var(--border-gold-subtle);
      height: 100%;
      transition: var(--transition-smooth);
    }
    .feature-small-card {
      background: var(--card-dark-bg);
      border-radius: var(--radius-lg);
      padding: 2rem;
      border: 1px solid var(--border-gold-subtle);
      transition: var(--transition-smooth);
    }
    .feature-large-card:hover, .feature-small-card:hover {
      border-color: var(--secondary-gold);
      box-shadow: var(--shadow-gold-glow);
      transform: translateY(-5px);
    }
    .feature-icon {
      font-size: 2.5rem;
      color: var(--secondary-gold);
      margin-bottom: 1rem;
    }

    /* 操作流程 */
    .step-item {
      text-align: center;
      position: relative;
    }
    .step-circle {
      width: 60px;
      height: 60px;
      background: var(--primary-deep-green);
      border: 2px solid var(--secondary-gold);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--secondary-gold);
      margin: 0 auto 1rem;
    }

    /* FAQ */
    .accordion-button {
      background-color: var(--card-dark-bg);
      color: white;
      font-weight: 600;
      border: 1px solid var(--border-gold-subtle);
      border-radius: var(--radius-sm) !important;
      padding: 1.2rem 1.5rem;
    }
    .accordion-button:not(.collapsed) {
      background-color: var(--primary-deep-green);
      color: white;
      border-color: var(--secondary-gold);
      box-shadow: none;
    }
    .accordion-button:focus {
      border-color: var(--secondary-gold);
      box-shadow: 0 0 0 0.15rem rgba(212,175,55,0.4);
    }
    .accordion-body {
      background: #1e1e1e;
      color: #ccc;
      border: 1px solid var(--border-gold-subtle);
      border-top: none;
      border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    }

    /* CTA */
    .cta-section {
      background: linear-gradient(0deg, rgba(10,61,44,0.9) 0%, rgba(26,26,26,0.9) 80%), url('/assets/images/backpic/back-2.webp') center/cover;
    }

    /* 页脚 */
    .footer {
      background: #0f0f0f;
      border-top: 2px solid var(--secondary-gold);
      color: #aaa;
    }
    .footer a {
      color: #aaa;
    }
    .footer a:hover {
      color: var(--secondary-gold);
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 2.5rem;
      }
      .section-title {
        font-size: 2rem;
      }
    }