/* roulang page: index */
:root {
      --primary: #5B3A5E;
      --primary-hover: #432844;
      --secondary: #8FA86A;
      --secondary-hover: #7a9158;
      --accent: #F2D184;
      --accent-hover: #E5C36B;
      --bg-warm: #FDFBF7;
      --bg-light: #F0EDE6;
      --text-dark: #2E2B2C;
      --text-muted: #5c595a;
      --border-light: #D1CEC8;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
      --radius: 12px;
      --radius-btn: 6px;
      --transition: 0.2s ease-in-out;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-warm);
      color: var(--text-dark);
      line-height: 1.7;
      font-size: 16px;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4 {
      font-weight: 600;
      letter-spacing: 0.02em;
    }
    h1 {
      font-weight: 700;
      font-size: 2.5rem;
      line-height: 1.3;
    }
    h2 {
      font-size: 1.75rem;
      color: var(--primary);
      margin-bottom: 1.5rem;
      position: relative;
    }
    h3 {
      font-size: 1.3rem;
      font-weight: 500;
    }
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    /* 顶部信息条 */
    .top-bar {
      background: var(--primary);
      color: rgba(255,255,255,0.9);
      font-size: 0.75rem;
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 0 15px;
      letter-spacing: 0.3px;
    }
    .top-bar span {
      margin: 0 8px;
    }
    .top-bar a {
      color: white;
      text-decoration: none;
      border-bottom: 1px dotted rgba(255,255,255,0.5);
      margin-left: 12px;
    }
    /* 主导航 */
    .navbar-custom {
      background: white;
      height: 70px;
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      position: sticky;
      top: 0;
      z-index: 1020;
    }
    .navbar-brand-custom {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary) !important;
      text-decoration: none;
      letter-spacing: 0.5px;
    }
    .nav-link-custom {
      color: var(--text-dark) !important;
      font-weight: 500;
      margin: 0 12px;
      transition: color var(--transition);
      text-decoration: none;
    }
    .nav-link-custom:hover,
    .nav-link-custom.active {
      color: var(--primary) !important;
      font-weight: 600;
    }
    .navbar-toggler {
      border: none;
      color: var(--primary);
    }
    .offcanvas {
      background: var(--primary);
    }
    .offcanvas .nav-link {
      color: white !important;
      font-size: 1.2rem;
      margin: 8px 0;
    }
    /* 按钮 */
    .btn-primary-custom {
      background: var(--primary);
      border: none;
      color: white;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: all var(--transition);
      text-decoration: none;
      display: inline-block;
    }
    .btn-primary-custom:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
      color: white;
    }
    .btn-outline-secondary {
      border: 2px solid var(--secondary);
      color: var(--secondary);
      background: transparent;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: all var(--transition);
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline-secondary:hover {
      background: var(--secondary);
      color: white;
    }
    .btn-accent {
      background: var(--accent);
      color: var(--text-dark);
      font-weight: 700;
      padding: 14px 32px;
      border-radius: 8px;
      border: none;
      transition: all var(--transition);
      text-decoration: none;
      display: inline-block;
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      color: var(--text-dark);
    }
    /* 卡片 */
    .card-custom {
      background: white;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      border: none;
      height: 100%;
    }
    .card-custom:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .pain-card {
      background: var(--bg-light);
      border-radius: var(--radius);
      border-bottom: 3px solid var(--secondary);
      box-shadow: none;
    }
    /* 表单 */
    .form-control-custom {
      border: 1px solid var(--border-light);
      border-radius: 6px;
      padding: 12px 15px;
      background: white;
      transition: 0.2s;
    }
    .form-control-custom:focus {
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(143,168,106,0.2);
      outline: none;
    }
    /* 手风琴 */
    .accordion-button:not(.collapsed) {
      background-color: var(--bg-light);
      color: var(--primary);
      font-weight: 600;
      box-shadow: none;
    }
    .accordion-button:focus {
      box-shadow: none;
      border-color: var(--secondary);
    }
    .accordion-item {
      border: 1px solid var(--border-light);
      margin-bottom: 10px;
      border-radius: 8px !important;
    }
    /* 背景与装饰 */
    .bg-soft-green {
      background-color: rgba(143,168,106,0.1);
    }
    .bg-primary-dark {
      background-color: var(--primary);
    }
    .text-accent {
      color: var(--accent);
    }
    .divider-gold {
      height: 1px;
      background: rgba(242,209,132,0.3);
      margin: 2rem 0;
    }
    /* 移动端调整 */
    @media (max-width: 768px) {
      h1 {
        font-size: 2rem;
      }
      h2 {
        font-size: 1.5rem;
      }
      .navbar-custom {
        height: auto;
      }
      .hero-content {
        padding: 40px 20px;
      }
    }
    footer {
      background: #2E2B2C;
      color: #ccc;
    }
    footer a {
      color: var(--secondary);
      text-decoration: none;
    }
    footer a:hover {
      color: #b8cf8a;
    }
    .hero-grapes {
      background: linear-gradient(135deg, #5B3A5E 0%, #8FA86A 100%);
      min-height: 90vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }
    .hero-image-col {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 400px;
    }
    .leaf-svg {
      position: absolute;
      right: 20px;
      bottom: 20px;
      opacity: 0.25;
      color: var(--accent);
    }