/* roulang page: index */
:root {
      /* 主色与辅色系统 */
      --deep-green: #1A3C34;
      --deep-green-dark: #0F2823;
      --warm-copper: #C77D4B;
      --copper-hover: #A8653A;
      --warm-white-bg: #FAF7F2;
      --card-white: #FFFFFF;
      --light-gray-green: #EDF1EF;
      --text-primary: #1A3C34;
      --text-secondary: #5A6E68;
      --text-on-dark: #FFFFFF;
      --border-warm: #E8E3DC;
      --success-green: #7C9A7E;
      --alert-rust: #B85450;
      
      /* 圆角与阴影 */
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
      --shadow-card: 0 2px 16px rgba(26, 60, 52, 0.06);
      --shadow-hover: 0 8px 24px rgba(26, 60, 52, 0.1);
      
      /* 字体 */
      --font-serif: 'Noto Serif SC', serif;
      --font-sans: 'Noto Sans SC', sans-serif;
      --font-number: 'Inter', sans-serif;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-sans);
      background-color: var(--warm-white-bg);
      color: var(--text-primary);
      line-height: 1.75;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    
    h1, h2, h3, h4 {
      font-family: var(--font-serif);
      font-weight: 600;
      letter-spacing: -0.02em;
    }
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    /* 导航 Header */
    .site-header {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-warm);
      box-shadow: 0 1px 8px rgba(0,0,0,0.04);
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      height: 72px;
      display: flex;
      align-items: center;
    }
    
    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    
    .logo-icon {
      font-size: 28px;
      color: var(--deep-green);
    }
    
    .logo-text {
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 22px;
      color: var(--deep-green);
      letter-spacing: 0.5px;
    }
    
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--deep-green);
      text-decoration: none;
      padding: 4px 0;
      border-bottom: 2px solid transparent;
      transition: color 0.2s, border-color 0.2s;
    }
    
    .nav-links a:hover {
      color: var(--warm-copper);
      border-bottom-color: var(--warm-copper);
    }
    
    .search-box {
      display: flex;
      align-items: center;
      background: #F5F3EF;
      border-radius: 30px;
      padding: 6px 16px;
      margin-right: 12px;
    }
    
    .search-box input {
      border: none;
      background: transparent;
      outline: none;
      font-size: 14px;
      width: 120px;
      color: var(--text-primary);
    }
    
    .search-box input::placeholder {
      color: #9AA8A3;
    }
    
    .btn-copper {
      background: var(--warm-copper);
      color: white;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 10px 24px;
      font-size: 15px;
      border: none;
      cursor: pointer;
      transition: background 0.25s;
      text-decoration: none;
      display: inline-block;
    }
    
    .btn-copper:hover {
      background: var(--copper-hover);
      color: white;
    }
    
    .btn-outline {
      background: transparent;
      border: 2px solid var(--deep-green);
      color: var(--deep-green);
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 10px 24px;
      font-size: 15px;
      cursor: pointer;
      transition: all 0.25s;
      text-decoration: none;
      display: inline-block;
    }
    
    .btn-outline:hover {
      background: rgba(26,60,52,0.05);
      color: var(--deep-green);
    }
    
    .btn-ghost {
      background: transparent;
      border: 2px solid white;
      color: white;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-size: 16px;
      cursor: pointer;
      transition: all 0.25s;
      text-decoration: none;
    }
    
    .btn-ghost:hover {
      background: white;
      color: var(--deep-green);
    }
    
    .mobile-menu-icon {
      display: none;
      font-size: 24px;
      color: var(--deep-green);
      cursor: pointer;
    }
    
    /* 首屏 Hero */
    #hero {
      padding: 140px 0 100px;
      background-color: var(--warm-white-bg);
      background-image: radial-gradient(circle at 20% 30%, rgba(26,60,52,0.02) 0%, transparent 40%);
    }
    
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 60px;
    }
    
    .hero-text {
      flex: 1;
    }
    
    .hero-badge {
      display: inline-block;
      background: rgba(199,125,75,0.1);
      color: var(--warm-copper);
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 20px;
    }
    
    .hero-text h1 {
      font-size: 48px;
      font-weight: 700;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--deep-green);
    }
    
    .hero-sub {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 36px;
      max-width: 480px;
    }
    
    .hero-visual {
      flex: 1;
      background: #E9E4DB;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: var(--shadow-card);
      height: 380px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
    }
    
    /* 信任标识带 */
    #trust-bar {
      background: var(--light-gray-green);
      padding: 28px 0;
      text-align: center;
    }
    
    .trust-logos {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 40px;
      flex-wrap: wrap;
      margin-bottom: 12px;
    }
    
    .trust-logo-placeholder {
      width: 90px;
      height: 36px;
      background: rgba(26,60,52,0.08);
      border-radius: 6px;
    }
    
    .trust-text {
      font-size: 14px;
      color: var(--text-secondary);
      font-weight: 500;
    }
    
    /* 通用板块 */
    .section {
      padding: 100px 0;
    }
    
    .section-title {
      font-size: 36px;
      font-weight: 600;
      margin-bottom: 16px;
      color: var(--deep-green);
    }
    
    .section-desc {
      font-size: 18px;
      color: var(--text-secondary);
      margin-bottom: 48px;
      max-width: 700px;
    }
    
    /* 痛点区 */
    .pain-row {
      display: flex;
      align-items: center;
      gap: 60px;
      margin-bottom: 80px;
    }
    
    .pain-row.reverse {
      flex-direction: row-reverse;
    }
    
    .pain-img {
      flex: 1;
      height: 300px;
      background: #ddd;
      border-radius: 16px;
      background-size: cover;
    }
    
    .pain-content {
      flex: 1;
    }
    
    .pain-content h3 {
      font-size: 24px;
      margin-bottom: 16px;
      color: var(--alert-rust);
    }
    
    /* 解决方案卡片 */
    .solution-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    
    .sol-card {
      background: var(--card-white);
      border: 1px solid var(--border-warm);
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--shadow-card);
      transition: all 0.25s;
    }
    
    .sol-card:hover {
      border-color: var(--warm-copper);
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    
    .sol-icon {
      font-size: 32px;
      color: var(--deep-green);
      margin-bottom: 20px;
    }
    
    /* 成果数据 */
    #outcomes {
      background: var(--deep-green);
      color: white;
    }
    
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    
    .stat-number {
      font-family: var(--font-number);
      font-size: 56px;
      font-weight: 700;
      color: var(--warm-copper);
      line-height: 1.1;
    }
    
    /* 证言 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    
    .testimonial-card {
      background: white;
      padding: 28px;
      border-radius: var(--radius-card);
      border-left: 4px solid var(--warm-copper);
      box-shadow: var(--shadow-card);
    }
    
    /* FAQ */
    .accordion-faq .accordion-item {
      margin-bottom: 12px;
      border: 1px solid var(--border-warm);
      border-radius: 8px;
      background: white;
    }
    
    .accordion-title {
      font-size: 18px;
      font-weight: 600;
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      color: var(--deep-green);
    }
    
    .accordion-content {
      padding: 0 24px 20px;
      display: none;
      color: var(--text-secondary);
    }
    
    .accordion-content.active {
      display: block;
    }
    
    /* 终局 CTA */
    #final-cta {
      background: var(--deep-green);
      padding: 100px 0;
      text-align: center;
      color: white;
    }
    
    /* 页脚 */
    .site-footer {
      background: var(--deep-green-dark);
      color: rgba(255,255,255,0.8);
      padding: 60px 0 30px;
    }
    
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
    }
    
    @media (max-width: 1024px) {
      .hero-grid, .pain-row {
        flex-direction: column;
      }
      .solution-cards {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    
    @media (max-width: 768px) {
      .nav-links, .search-box {
        display: none;
      }
      .mobile-menu-icon {
        display: block;
      }
      .hero-text h1 {
        font-size: 32px;
      }
      .solution-cards, .testimonial-grid {
        grid-template-columns: 1fr;
      }
      .section {
        padding: 60px 0;
      }
    }