/* roulang page: index */
:root {
      --primary-green: #1B8E3F;
      --deep-green: #0D5C2E;
      --gold: #F5A623;
      --gold-hover: #E09515;
      --bg-light: #F7F9F8;
      --white: #FFFFFF;
      --text-dark: #1A1A1A;
      --text-muted: #5F6B6A;
      --border-light: #E0E0E0;
      --shadow-card: 0 4px 12px rgba(0,0,0,0.06);
      --shadow-hover: 0 8px 24px rgba(0,0,0,0.10);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-pill: 20px;
      --transition: 0.2s ease;
      --font-stack: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.6;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: var(--primary-green);
      text-decoration: none;
      transition: color var(--transition);
    }

    a:hover {
      color: #157A34;
      text-decoration: underline;
    }

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

    /* 容器 */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: var(--white);
      box-shadow: 0 2px 8px rgba(0,0,0,0.06);
      height: 64px;
      display: flex;
      align-items: center;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }

    .logo-area {
      display: flex;
      align-items: center;
    }

    .logo-icon {
      font-size: 28px;
      color: var(--primary-green);
      margin-right: 8px;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--deep-green);
      letter-spacing: 0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
    }

    .nav-links a {
      color: var(--text-dark);
      font-weight: 500;
      font-size: 15px;
      position: relative;
      padding: 4px 0;
    }

    .nav-links a:hover {
      color: var(--primary-green);
      text-decoration: none;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary-green);
      transition: width var(--transition);
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .search-box {
      display: flex;
      align-items: center;
      background: var(--bg-light);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-pill);
      padding: 6px 16px;
      transition: border var(--transition);
    }

    .search-box input {
      border: none;
      background: transparent;
      outline: none;
      font-size: 14px;
      width: 140px;
      color: var(--text-dark);
    }

    .search-box i {
      color: var(--text-muted);
      font-size: 14px;
    }

    .btn {
      display: inline-block;
      font-weight: 600;
      border-radius: var(--radius-btn);
      transition: all var(--transition);
      cursor: pointer;
      text-align: center;
    }

    .btn-primary {
      background: var(--gold);
      color: var(--white);
      border: none;
      padding: 10px 24px;
      font-size: 15px;
      border-radius: var(--radius-pill);
    }

    .btn-primary:hover {
      background: var(--gold-hover);
      transform: scale(1.03);
      text-decoration: none;
      color: white;
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary-green);
      color: var(--primary-green);
      padding: 10px 24px;
      font-size: 15px;
      border-radius: var(--radius-pill);
    }

    .btn-outline:hover {
      background: var(--primary-green);
      color: white;
      text-decoration: none;
    }

    .btn-large {
      padding: 14px 32px;
      font-size: 18px;
    }

    .hamburger {
      display: none;
      font-size: 24px;
      color: var(--deep-green);
      cursor: pointer;
    }

    /* Hero */
    .hero {
      background: linear-gradient(180deg, rgba(13,92,46,0.7) 0%, rgba(13,92,46,0.4) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 520px;
      display: flex;
      align-items: center;
      color: white;
      padding: 80px 0;
    }

    .hero-content {
      max-width: 600px;
    }

    .hero h1 {
      font-size: 48px;
      font-weight: 700;
      line-height: 1.2;
      color: white;
      margin-bottom: 20px;
    }

    .hero p {
      font-size: 20px;
      color: rgba(255,255,255,0.9);
      margin-bottom: 32px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 板块通用 */
    .section {
      padding: 80px 0;
    }

    .section-title {
      font-size: 36px;
      font-weight: 700;
      color: var(--deep-green);
      text-align: center;
      margin-bottom: 16px;
    }

    .section-subtitle {
      font-size: 20px;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 48px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: all var(--transition);
    }

    .card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }

    .card-image-top img {
      border-radius: var(--radius-card) var(--radius-card) 0 0;
      width: 100%;
      height: 180px;
      object-fit: cover;
    }

    .card-body {
      padding: 20px 0 0;
    }

    .icon-circle {
      font-size: 36px;
      color: var(--gold);
      margin-bottom: 16px;
    }

    .stat-number {
      font-size: 36px;
      font-weight: 700;
      color: var(--gold);
    }

    .process-line {
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .step {
      text-align: center;
      flex: 1;
    }

    .step-circle {
      width: 48px;
      height: 48px;
      background: var(--primary-green);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 20px;
      margin: 0 auto 12px;
    }

    .connector {
      width: 60px;
      height: 2px;
      background: var(--primary-green);
      margin: 0 8px;
    }

    .faq-item {
      border-bottom: 1px solid var(--border-light);
    }

    .faq-question {
      font-weight: 600;
      padding: 16px 0;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-answer {
      padding-bottom: 16px;
      color: var(--text-muted);
      display: none;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .cta-section {
      background: var(--deep-green);
      padding: 80px 0;
      text-align: center;
      color: white;
    }

    .footer {
      background: #1A1A1A;
      color: #CCCCCC;
      padding: 48px 0 24px;
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 24px;
    }

    @media (max-width: 1024px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .nav-links, .header-actions .search-box, .header-actions .btn {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .hero h1 { font-size: 32px; }
      .section-title { font-size: 28px; }
      .grid-3, .grid-4 { grid-template-columns: 1fr; }
      .process-line { flex-direction: column; }
      .connector { width: 2px; height: 24px; margin: 8px 0; }
      .footer-grid { grid-template-columns: 1fr; }
    }