/* roulang page: index */
:root {
      --primary: #C8A96E;
      --primary-glow: #D4AF37;
      --secondary: #1E1F24;
      --bg: #FAF8F5;
      --surface: #FFFFFF;
      --text-main: #2C2D30;
      --text-muted: #6B6D73;
      --text-on-dark: #F5F3EF;
      --border-light: #E8E5DF;
      --shadow-sm: 0 4px 12px rgba(0,0,0,0.03), 0 1px 3px rgba(0,0,0,0.02);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.05), 0 2px 6px rgba(0,0,0,0.04);
      --shadow-hover: 0 14px 32px rgba(0,0,0,0.08), 0 3px 8px rgba(0,0,0,0.04);
      --radius-card: 14px;
      --radius-btn: 10px;
      --radius-img: 12px;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
      --font-number: "Inter", "SF Pro Display", system-ui, sans-serif;
      --max-width: 1280px;
      --header-height: 72px;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 28px;
    }
    
    /* 导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      box-shadow: 0 2px 12px rgba(0,0,0,0.02);
      transition: background 0.25s ease;
      height: var(--header-height);
      display: flex;
      align-items: center;
    }
    
    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    
    .logo {
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: -0.3px;
      color: var(--secondary);
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
    }
    .logo-icon {
      font-size: 1.8rem;
      color: var(--primary);
      line-height: 1;
    }
    
    .nav-links {
      display: flex;
      gap: 2.2rem;
      align-items: center;
    }
    .nav-links a {
      text-decoration: none;
      color: var(--text-main);
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.2s;
      position: relative;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-cta {
      background: var(--primary);
      color: white !important;
      padding: 0.5rem 1.4rem;
      border-radius: 30px;
      font-weight: 600;
      box-shadow: 0 4px 10px rgba(200,169,110,0.3);
    }
    .nav-cta:hover {
      background: #b8973c;
      box-shadow: 0 6px 16px rgba(200,169,110,0.45);
    }
    
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
    }
    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--text-main);
      transition: 0.2s;
    }
    
    /* Hero */
    .hero {
      padding: 60px 0 80px;
      background: linear-gradient(135deg, #1E1F24 0%, #2a2b30 100%);
      color: var(--text-on-dark);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .hero-content h1 {
      font-size: clamp(2.2rem, 5vw, 3.5rem);
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 1.5rem;
      letter-spacing: -0.02em;
    }
    .hero-subtitle {
      font-size: 1.25rem;
      color: #E8E5DF;
      margin-bottom: 2rem;
      min-height: 2.8rem;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--primary);
      color: #1E1F24;
      padding: 0.75rem 2.2rem;
      border-radius: var(--radius-btn);
      font-weight: 700;
      text-decoration: none;
      transition: var(--transition);
      border: none;
      box-shadow: 0 6px 16px rgba(200,169,110,0.35);
    }
    .btn-primary:hover {
      background: var(--primary-glow);
      box-shadow: 0 0 20px rgba(212,175,55,0.5);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
      padding: 0.75rem 2rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      text-decoration: none;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(200,169,110,0.1);
    }
    .hero-visual {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 24px;
      height: 360px;
      width: 100%;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
      background-blend-mode: overlay;
      background-color: rgba(30,31,36,0.2);
    }
    
    /* 亮点网格 */
    .highlights {
      padding: 90px 0;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 650;
      margin-bottom: 3rem;
      color: var(--secondary);
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2.5rem;
    }
    .highlight-item {
      display: flex;
      flex-direction: column;
      border-bottom: 2px solid var(--primary);
      padding-bottom: 1.5rem;
    }
    .highlight-num {
      font-family: var(--font-number);
      font-size: 2rem;
      font-weight: 700;
      color: var(--primary);
    }
    .highlight-title {
      font-weight: 650;
      margin: 0.5rem 0;
    }
    
    /* 服务矩阵 */
    .services {
      padding: 80px 0;
    }
    .magazine-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr;
      gap: 24px;
    }
    .service-card {
      background: var(--surface);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .service-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .service-img {
      height: 200px;
      background-size: cover;
      background-position: center;
    }
    .service-info {
      padding: 24px;
    }
    .small-cards {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    
    /* 案例瀑布 */
    .cases {
      padding: 90px 0;
    }
    .case-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
      margin-bottom: 60px;
    }
    .case-img {
      background-size: cover;
      background-position: center;
      border-radius: var(--radius-img);
      height: 260px;
      box-shadow: var(--shadow-md);
    }
    .case-tag {
      background: #f3efe7;
      color: #5e4c2c;
      padding: 0.2rem 1rem;
      border-radius: 20px;
      font-size: 0.8rem;
      display: inline-block;
      margin-bottom: 0.8rem;
    }
    
    /* 对比表 */
    .pricing {
      padding: 80px 0;
    }
    .table-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0;
      border-radius: 16px;
      overflow: hidden;
    }
    .plan-col {
      background: white;
      padding: 32px 20px;
      text-align: center;
    }
    .plan-highlight {
      border: 2px solid var(--primary);
      transform: scale(1.02);
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .badge {
      background: var(--primary);
      color: #1E1F24;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.75rem;
    }
    
    /* FAQ */
    .faq-section {
      padding: 90px 0;
      display: grid;
      grid-template-columns: 200px 1fr;
      gap: 40px;
    }
    .faq-categories {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-cat {
      font-weight: 600;
      color: var(--text-muted);
      cursor: pointer;
    }
    .faq-cat.active {
      color: var(--primary);
    }
    .accordion-item {
      border-bottom: 1px solid var(--border-light);
      padding: 18px 0;
    }
    .accordion-title {
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }
    
    /* CTA */
    .final-cta {
      background: var(--secondary);
      color: white;
      padding: 80px 0;
      text-align: center;
    }
    
    /* 页脚 */
    .footer {
      background: #1a1b1f;
      color: #ccc;
      padding: 60px 0 20px;
    }
    
    @media (max-width: 1024px) {
      .hero-grid, .magazine-grid, .case-row {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .grid-3 { grid-template-columns: 1fr; }
      .faq-section { grid-template-columns: 1fr; }
    }