/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --primary: #1A5F3A;
      --primary-deep: #0D3320;
      --accent: #E67E22;
      --accent-hover: #D35400;
      --bg: #FAF9F5;
      --card-bg: #FFFFFF;
      --text-main: #1E1E1E;
      --text-secondary: #5A5A5A;
      --text-light: #FFFFFF;
      --border: #E8E5DF;
      --shadow-sm: 0 2px 12px rgba(0,0,0,0.04);
      --shadow-md: 0 6px 20px rgba(0,0,0,0.08);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
      --font-title: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --font-body: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      margin: 0;
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-main);
      background-color: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    
    h1, h2, h3, .font-title {
      font-family: var(--font-title);
      letter-spacing: -0.02em;
    }
    
    h1 {
      font-size: 44px;
      line-height: 1.2;
      font-weight: 800;
    }
    h2 {
      font-size: 32px;
      line-height: 1.25;
      font-weight: 700;
      margin-bottom: 0.75em;
    }
    h3 {
      font-size: 20px;
      line-height: 1.4;
      font-weight: 600;
    }
    
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    
    /* 导航样式 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      box-shadow: 0 1px 6px rgba(0,0,0,0.04);
      z-index: 50;
      padding: 16px 0;
      transition: all 0.25s ease;
    }
    .nav-link {
      color: var(--text-secondary);
      font-family: var(--font-title);
      font-weight: 500;
      font-size: 15px;
      position: relative;
      padding: 8px 4px;
      transition: color 0.2s;
      text-decoration: none;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width 0.25s ease;
    }
    .nav-link:hover {
      color: var(--primary);
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .btn-primary {
      background-color: var(--accent);
      color: white;
      font-weight: 700;
      font-family: var(--font-title);
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-size: 16px;
      border: none;
      cursor: pointer;
      transition: all 0.2s ease;
      display: inline-block;
      text-decoration: none;
      box-shadow: 0 2px 8px rgba(230,126,34,0.3);
    }
    .btn-primary:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(211,84,0,0.35);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      font-weight: 700;
      font-family: var(--font-title);
      border-radius: var(--radius-btn);
      padding: 10px 26px;
      transition: all 0.2s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline:hover {
      background: rgba(26,95,58,0.08);
      transform: translateY(-2px);
    }
    .btn-nav {
      background-color: var(--accent);
      color: white;
      font-weight: 700;
      font-family: var(--font-title);
      border-radius: var(--radius-btn);
      padding: 10px 22px;
      font-size: 15px;
      transition: all 0.2s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-nav:hover {
      background-color: var(--accent-hover);
      transform: scale(1.02);
    }
    
    /* 卡片 */
    .card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      overflow: hidden;
    }
    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .problem-card {
      background: #F0F5F2;
      border-left: 5px solid var(--primary);
      box-shadow: none;
      border-radius: 8px;
    }
    
    /* FAQ手风琴 */
    .faq-item {
      border-bottom: 1px solid var(--border);
      transition: all 0.3s;
    }
    .faq-question {
      cursor: pointer;
      font-weight: 600;
      color: var(--primary);
      font-family: var(--font-title);
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 0;
      font-size: 18px;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.4s;
      color: var(--text-secondary);
      line-height: 1.7;
      padding: 0 0;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 20px;
    }
    .faq-icon {
      transition: transform 0.3s;
      font-size: 22px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    
    /* 汉堡菜单 */
    .mobile-menu {
      display: none;
      flex-direction: column;
      position: fixed;
      top: 72px;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.98);
      backdrop-filter: blur(12px);
      padding: 24px;
      box-shadow: 0 12px 24px rgba(0,0,0,0.08);
      z-index: 40;
    }
    .mobile-menu a {
      padding: 14px 0;
      font-size: 18px;
      border-bottom: 1px solid var(--border);
      color: var(--text-main);
      font-weight: 600;
      text-decoration: none;
    }
    
    @media (max-width: 768px) {
      h1 { font-size: 34px; }
      h2 { font-size: 28px; }
      .container { padding-left: 20px; padding-right: 20px; }
      .mobile-menu { display: none; }
      .mobile-menu.open { display: flex; }
      .desktop-nav { display: none; }
      .hamburger { display: block; }
    }
    @media (min-width: 769px) {
      .hamburger { display: none; }
      .desktop-nav { display: flex; }
    }
    @media (max-width: 480px) {
      h1 { font-size: 28px; }
      .btn-primary, .btn-outline { width: 100%; text-align: center; }
    }
    
    .hero-bg {
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .hero-overlay {
      background: linear-gradient(135deg, rgba(26,95,58,0.88) 0%, rgba(13,51,32,0.92) 100%);
    }
    
    .footer-dark {
      background: #1E1E1E;
      color: #B0B0B0;
    }
    .footer-dark a {
      color: #D0D0D0;
      text-decoration: none;
      transition: color 0.2s;
    }
    .footer-dark a:hover {
      color: var(--accent);
    }