/* roulang page: index */
:root {
      --deep-rock: #2B2D31;
      --grass-green: #3D6B4F;
      --amber-orange: #E07B3C;
      --warm-bg: #F7F5F2;
      --white: #FFFFFF;
      --text-primary: #1A1C1E;
      --text-body: #4A4D52;
      --text-muted: #8B8F96;
      --border-light: #E8E6E1;
      --card-shadow: 0 2px 12px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.06);
      --card-shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
      --radius-card: 12px;
      --radius-btn: 8px;
      --transition-smooth: 0.25s ease;
      --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-number: "Inter", "SF Pro Display", sans-serif;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-sans);
      background-color: var(--warm-bg);
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    
    a {
      text-decoration: none;
      color: inherit;
    }
    
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-light);
      z-index: 100;
      transition: box-shadow 0.3s ease;
      padding: 0 24px;
    }
    
    .header.scrolled {
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }
    
    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      max-width: 1200px;
      margin: 0 auto;
    }
    
    .logo {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--deep-rock);
      letter-spacing: 1px;
      white-space: nowrap;
    }
    
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    
    .nav-links a {
      font-weight: 500;
      color: var(--text-body);
      transition: color 0.2s;
      font-size: 0.95rem;
      white-space: nowrap;
    }
    
    .nav-links a:hover {
      color: var(--grass-green);
    }
    
    .btn-capsule {
      background: var(--amber-orange);
      color: white;
      padding: 10px 24px;
      border-radius: 40px;
      font-weight: 600;
      font-size: 0.9rem;
      transition: background 0.2s ease;
      white-space: nowrap;
    }
    
    .btn-capsule:hover {
      background: #C96A30;
    }
    
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: transparent;
      border: none;
    }
    
    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--deep-rock);
      border-radius: 2px;
    }
    
    .mobile-menu {
      display: none;
      position: fixed;
      top: 0;
      right: 0;
      width: 70%;
      height: 100vh;
      background: #FFFFFF;
      box-shadow: -2px 0 20px rgba(0,0,0,0.1);
      flex-direction: column;
      padding: 80px 32px;
      gap: 28px;
      z-index: 200;
      transform: translateX(100%);
      transition: transform 0.3s ease;
    }
    
    .mobile-menu.active {
      transform: translateX(0);
    }
    
    .mobile-menu a {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--deep-rock);
    }
    
    .overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.4);
      z-index: 150;
    }
    
    /* Hero */
    .hero {
      padding: 120px 0 80px;
      display: flex;
      align-items: center;
      gap: 48px;
      background-color: var(--warm-bg);
      position: relative;
      overflow: hidden;
    }
    
    .hero::after {
      content: "";
      position: absolute;
      bottom: -60px;
      right: -40px;
      width: 400px;
      height: 400px;
      background: rgba(61, 107, 79, 0.08);
      border-radius: 50%;
      z-index: 0;
    }
    
    .hero-text {
      flex: 1;
      position: relative;
      z-index: 2;
    }
    
    .hero h1 {
      font-size: 3rem;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: -0.02em;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    
    .hero-sub {
      font-size: 1.125rem;
      color: var(--text-body);
      margin-bottom: 32px;
      max-width: 480px;
    }
    
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    
    .btn-primary {
      background: var(--amber-orange);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: background 0.2s;
      display: inline-block;
    }
    
    .btn-primary:hover {
      background: #C96A30;
    }
    
    .btn-outline {
      border: 1.5px solid var(--deep-rock);
      color: var(--deep-rock);
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      background: transparent;
      transition: 0.2s;
      display: inline-block;
    }
    
    .btn-outline:hover {
      background: rgba(43, 45, 49, 0.05);
    }
    
    .hero-image {
      flex: 1;
      background: #E8E6E1;
      border-radius: 16px;
      overflow: hidden;
      height: 360px;
      position: relative;
      z-index: 2;
    }
    
    .hero-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    /* 区块通用 */
    section {
      padding: 80px 0;
    }
    
    .section-title {
      font-size: 2rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 16px;
      text-align: center;
    }
    
    .section-desc {
      color: var(--text-muted);
      margin-bottom: 48px;
      text-align: center;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    
    /* 卡片网格 */
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    
    .service-card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--card-shadow);
      transition: var(--transition-smooth);
    }
    
    .service-card:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-2px);
    }
    
    .service-card i {
      font-size: 2.5rem;
      color: var(--grass-green);
      margin-bottom: 20px;
    }
    
    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 600;
      margin-bottom: 12px;
      color: var(--text-primary);
    }
    
    /* 数据 */
    .stats-row {
      display: flex;
      justify-content: center;
      gap: 60px;
      text-align: center;
    }
    
    .stat-number {
      font-family: var(--font-number);
      font-size: 3.5rem;
      font-weight: 700;
      color: var(--amber-orange);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
    }
    
    .stat-underline {
      width: 40px;
      height: 2px;
      background: var(--grass-green);
      margin: 8px auto 12px;
    }
    
    /* 方案卡片 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    
    .pricing-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      position: relative;
    }
    
    .pricing-card.featured {
      border: 2px solid var(--grass-green);
    }
    
    .badge {
      position: absolute;
      top: 16px;
      right: 16px;
      background: var(--amber-orange);
      color: white;
      font-size: 0.75rem;
      padding: 4px 12px;
      border-radius: 20px;
      font-weight: 600;
    }
    
    .price {
      font-family: var(--font-number);
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--deep-rock);
      margin: 8px 0 20px;
    }
    
    .benefits {
      list-style: none;
      margin: 20px 0;
      flex: 1;
    }
    
    .benefits li i {
      color: var(--grass-green);
      margin-right: 8px;
    }
    
    /* 流程 */
    .steps {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      position: relative;
    }
    
    .step-item {
      text-align: center;
      flex: 1;
    }
    
    .circle {
      width: 48px;
      height: 48px;
      background: var(--grass-green);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin: 0 auto 16px;
    }
    
    /* 评价 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    
    .testimonial-card {
      background: #FAFAF8;
      border-radius: var(--radius-card);
      padding: 28px;
    }
    
    .stars i {
      color: var(--amber-orange);
    }
    
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--border-light);
    }
    
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 20px 0;
      font-weight: 600;
      color: var(--text-primary);
      cursor: pointer;
      font-size: 1.1rem;
    }
    
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: var(--text-body);
      padding-bottom: 0;
    }
    
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 20px;
    }
    
    /* CTA */
    .cta-block {
      background: var(--deep-rock);
      color: white;
      text-align: center;
      padding: 80px 24px;
    }
    
    /* Footer */
    .footer {
      background: #1A1C1E;
      color: var(--text-muted);
      padding: 60px 24px 30px;
    }
    
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    
    @media (max-width: 1024px) {
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
    }
    
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .hero { flex-direction: column; padding-top: 100px; }
      .hero h1 { font-size: 2rem; }
      .grid-4, .pricing-grid, .testimonial-grid, .stats-row { grid-template-columns: 1fr; }
      .steps { flex-direction: column; gap: 32px; }
      .footer-grid { grid-template-columns: 1fr; }
    }