/* roulang page: index */
:root {
      --primary: #1B5E20;
      --primary-hover: #154A1A;
      --primary-light: #E8F5E9;
      --accent: #F57C00;
      --accent-hover: #E65100;
      --bg-warm: #FAF9F6;
      --bg-dark: #0D2818;
      --text-main: #1A1A1A;
      --text-muted: #4A4A4A;
      --white: #FFFFFF;
      --card-shadow: 0 4px 12px rgba(0,0,0,0.06);
      --card-shadow-hover: 0 8px 24px rgba(0,0,0,0.1);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
      --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --transition-base: 0.2s ease;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-sans);
      color: var(--text-main);
      background-color: var(--bg-warm);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-base);
    }
    button, input {
      font-family: inherit;
      outline: none;
    }
    .container {
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    /* 导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(8px);
      transition: box-shadow 0.2s;
    }
    .site-header.scrolled {
      box-shadow: 0 2px 12px rgba(0,0,0,0.08);
      background: rgba(255,255,255,0.98);
    }
    .nav-link {
      position: relative;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: width 0.2s;
    }
    .nav-link:hover::after,
    .nav-link.active::after {
      width: 100%;
    }
    .nav-link:hover {
      color: var(--accent);
    }
    .btn-primary {
      background: var(--primary);
      color: var(--white);
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: background var(--transition-base), transform 0.1s;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      cursor: pointer;
      transition: background var(--transition-base), color var(--transition-base);
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }
    .btn-outline:hover {
      background: var(--primary-light);
    }
    .btn-accent {
      background: var(--accent);
      color: var(--white);
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: background var(--transition-base);
    }
    .btn-accent:hover {
      background: var(--accent-hover);
    }
    .badge-pill {
      background: var(--accent);
      color: white;
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .live-dot {
      width: 8px;
      height: 8px;
      background: #2E7D32;
      border-radius: 50%;
      display: inline-block;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.6; transform: scale(1.3); }
      100% { opacity: 1; transform: scale(1); }
    }
    /* 卡片 */
    .card {
      background: var(--white);
      border-radius: var(--radius-card);
      box-shadow: var(--card-shadow);
      transition: box-shadow var(--transition-base), transform var(--transition-base);
    }
    .card:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
    }
    /* 汉堡菜单 */
    .mobile-menu {
      display: none;
      position: fixed;
      top: 64px;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0,0,0,0.7);
      backdrop-filter: blur(10px);
      z-index: 45;
      flex-direction: column;
      padding: 24px 20px;
    }
    .mobile-menu.open {
      display: flex;
    }
    .mobile-menu a {
      color: white;
      font-size: 20px;
      padding: 16px 0;
      border-bottom: 1px solid rgba(255,255,255,0.2);
      font-weight: 500;
    }
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid #e0e0e0;
      background: var(--bg-warm);
      transition: background 0.2s;
    }
    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 16px;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: none;
      border: none;
      cursor: pointer;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding: 0 16px;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 16px 18px;
    }
    .faq-item.active {
      background: #f1f8e9;
    }
    .faq-icon {
      transition: transform 0.2s;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    /* 响应式 */
    @media (max-width: 1023px) {
      .desktop-nav { display: none !important; }
      .hamburger-btn { display: flex !important; }
    }
    @media (min-width: 1024px) {
      .hamburger-btn { display: none !important; }
      .mobile-menu { display: none !important; }
    }
    .hamburger-btn {
      display: none;
      flex-direction: column;
      gap: 6px;
      background: none;
      border: none;
      cursor: pointer;
    }
    .hamburger-btn span {
      width: 26px;
      height: 3px;
      background: var(--primary);
      border-radius: 4px;
      transition: 0.2s;
    }
    .testimonial-scroll {
      scroll-snap-type: x mandatory;
      -webkit-overflow-scrolling: touch;
    }
    .testimonial-scroll > * {
      scroll-snap-align: start;
    }
    @media (max-width: 640px) {
      .hero-cta {
        flex-direction: column;
        align-items: flex-start;
      }
    }