/* roulang page: index */
:root {
      --brand-deep-green: #0E7A3B;
      --brand-dark-green: #063D1E;
      --accent-gold: #D4A843;
      --accent-gold-hover: #B88D2E;
      --accent-orange: #E85D2C;
      --accent-orange-hover: #C94A1F;
      --bg-light: #F5F7F5;
      --bg-white: #FFFFFF;
      --text-dark: #1E1E1E;
      --text-muted: #4A5568;
      --border-light: rgba(0,0,0,0.06);
      --shadow-card: 0 2px 12px rgba(0,0,0,0.06);
      --shadow-card-hover: 0 8px 24px rgba(14,122,59,0.15);
      --shadow-nav: 0 4px 12px rgba(0,0,0,0.04);
      --radius-card: 12px;
      --radius-button: 8px;
      --max-width: 1280px;
      --nav-height: 72px;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Noto Sans SC', 'Inter', sans-serif;
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 40px;
    }
    
    h1, h2, h3 {
      font-weight: 700;
      line-height: 1.3;
    }
    
    h1 {
      font-size: 48px;
      letter-spacing: -0.5px;
    }
    
    h2 {
      font-size: 36px;
      margin-bottom: 16px;
    }
    
    h3 {
      font-size: 24px;
    }
    
    a {
      text-decoration: none;
      color: inherit;
    }
    
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      border-radius: var(--radius-button);
      font-weight: 700;
      font-size: 16px;
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
      background: transparent;
      white-space: nowrap;
    }
    
    .btn-primary {
      background: var(--accent-gold);
      color: var(--brand-deep-green);
    }
    .btn-primary:hover {
      background: var(--accent-gold-hover);
      transform: scale(1.03);
    }
    
    .btn-secondary {
      border: 2px solid var(--brand-deep-green);
      color: var(--brand-deep-green);
      background: transparent;
    }
    .btn-secondary:hover {
      background: #E6F4EC;
    }
    
    .btn-cta {
      background: var(--accent-orange);
      color: white;
    }
    .btn-cta:hover {
      background: var(--accent-orange-hover);
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(232,93,44,0.25);
    }
    
    /* 导航栏 */
    .main-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: var(--nav-height);
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(12px);
      z-index: 100;
      display: flex;
      align-items: center;
      transition: box-shadow 0.3s;
      border-bottom: 1px solid transparent;
    }
    .main-header.scrolled {
      box-shadow: var(--shadow-nav);
      border-bottom-color: var(--border-light);
    }
    
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 40px;
    }
    
    .logo {
      font-size: 24px;
      font-weight: 700;
      color: var(--brand-deep-green);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .logo i {
      font-size: 28px;
      color: var(--accent-gold);
    }
    
    .desktop-nav {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .desktop-nav a {
      font-weight: 500;
      color: var(--text-dark);
      transition: color 0.2s;
      position: relative;
    }
    .desktop-nav a:hover,
    .desktop-nav a.active {
      color: var(--brand-deep-green);
    }
    .desktop-nav a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--brand-deep-green);
      transition: width 0.25s;
    }
    .desktop-nav a:hover::after {
      width: 100%;
    }
    
    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(20px);
      box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
      z-index: 110;
      border-radius: 20px 20px 0 0;
      justify-content: space-around;
      align-items: center;
      padding: 0 12px;
    }
    .mobile-bottom-nav a {
      display: flex;
      flex-direction: column;
      align-items: center;
      font-size: 12px;
      color: var(--text-muted);
      transition: color 0.2s;
      gap: 4px;
    }
    .mobile-bottom-nav a i {
      font-size: 20px;
    }
    .mobile-bottom-nav a.active {
      color: var(--brand-deep-green);
    }
    
    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: linear-gradient(135deg, rgba(14,122,59,0.9) 0%, rgba(6,61,30,0.95) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      color: white;
      position: relative;
      padding-top: var(--nav-height);
    }
    .hero-content {
      max-width: 700px;
      margin-left: 0;
      position: relative;
      z-index: 2;
    }
    .hero-badge {
      background: rgba(212,168,67,0.2);
      border: 1px solid var(--accent-gold);
      color: var(--accent-gold);
      padding: 6px 20px;
      border-radius: 30px;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 24px;
      font-size: 14px;
    }
    .hero h1 {
      margin-bottom: 24px;
      text-shadow: 0 4px 12px rgba(0,0,0,0.3);
    }
    .hero-subtitle {
      font-size: 18px;
      opacity: 0.9;
      margin-bottom: 40px;
      line-height: 1.7;
    }
    .hero-buttons {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .floating-ball {
      position: absolute;
      right: 40px;
      bottom: 100px;
      font-size: 64px;
      color: rgba(255,255,255,0.2);
      animation: rotateBall 12s linear infinite;
      cursor: pointer;
    }
    @keyframes rotateBall {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    
    /* 区块通用 */
    section {
      padding: 100px 0;
    }
    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-title p {
      color: var(--text-muted);
      max-width: 600px;
      margin: 12px auto 0;
    }
    
    /* 杂志双栏 */
    .magazine-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .magazine-left h2 {
      margin-bottom: 24px;
      color: var(--brand-deep-green);
    }
    .magazine-left p {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .magazine-right {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .stat-card {
      background: var(--bg-white);
      padding: 24px;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .stat-icon {
      font-size: 32px;
      color: var(--accent-gold);
    }
    .stat-number {
      font-family: 'Oswald', sans-serif;
      font-size: 32px;
      color: var(--brand-deep-green);
    }
    
    /* 服务网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--bg-white);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-card-hover);
    }
    .service-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .service-card-body {
      padding: 24px;
      flex: 1;
    }
    .service-card-body h3 {
      margin-bottom: 8px;
    }
    .service-link {
      margin-top: 16px;
      font-weight: 600;
      color: var(--brand-deep-green);
      display: flex;
      align-items: center;
      gap: 6px;
      transition: gap 0.2s;
    }
    .service-card:hover .service-link {
      gap: 10px;
    }
    
    /* 数据看板 */
    .stats-bar {
      display: flex;
      justify-content: space-around;
      background: var(--brand-deep-green);
      color: white;
      padding: 48px 20px;
      border-radius: var(--radius-card);
      flex-wrap: wrap;
      gap: 20px;
    }
    .stat-item {
      text-align: center;
    }
    .stat-large {
      font-family: 'Oswald', sans-serif;
      font-size: 48px;
      color: var(--accent-gold);
    }
    
    /* 案例瀑布 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: white;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      cursor: pointer;
    }
    .case-card img {
      height: 200px;
      object-fit: cover;
    }
    
    /* 对比表格 */
    .compare-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0;
      border-radius: var(--radius-card);
      overflow: hidden;
    }
    .compare-left {
      background: #f0f2f5;
      padding: 48px;
    }
    .compare-right {
      background: #E6F4EC;
      padding: 48px;
    }
    
    /* FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: white;
      border-radius: var(--radius-card);
      margin-bottom: 12px;
      box-shadow: var(--shadow-card);
      transition: all 0.3s;
      border-left: 4px solid transparent;
    }
    .faq-item.active {
      border-left-color: var(--brand-deep-green);
    }
    .faq-question {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      font-weight: 700;
      cursor: pointer;
    }
    .faq-answer {
      padding: 0 24px 20px;
      background: #F0F7F3;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    
    /* CTA横幅 */
    .cta-banner {
      background: linear-gradient(135deg, #0E7A3B 0%, #063D1E 100%);
      color: white;
      text-align: center;
      padding: 80px 20px;
      border-radius: var(--radius-card);
    }
    
    /* 页脚 */
    .footer {
      background: #1E1E1E;
      color: #ccc;
      padding: 60px 0 20px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }
    
    @media (max-width: 1024px) {
      .container { padding: 0 24px; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .cases-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .desktop-nav { display: none; }
      .mobile-bottom-nav { display: flex; }
      .main-header { justify-content: center; }
      .hero h1 { font-size: 32px; }
      .magazine-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: 1fr; }
      .cases-grid { grid-template-columns: 1fr; }
      .compare-wrapper { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .floating-ball { display: none; }
      section { padding: 60px 0; }
    }