/* roulang page: index */
:root {
      --primary: #C44B3C;
      --primary-dark: #A83A2E;
      --primary-light: #FDF0ED;
      --accent-gold: #C9A96E;
      --accent-gold-light: #F7F2E8;
      --text-dark: #1E1E1E;
      --text-muted: #555555;
      --text-light: #CCCCCC;
      --bg-warm: #FBF7F2;
      --bg-white: #FFFFFF;
      --border-soft: #EAE0D5;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
      --shadow-nav: 0 2px 12px rgba(0,0,0,0.04);
      --radius-card: 16px;
      --radius-btn: 8px;
      --radius-img: 24px;
      --font-serif: 'Noto Serif SC', serif;
      --font-sans: 'Noto Sans SC', sans-serif;
      --font-number: 'Inter', sans-serif;
      --container-max: 1280px;
      --section-padding: 100px 24px;
      --space-card: 32px;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-dark);
      line-height: 1.7;
      font-size: 16px;
      overflow-x: hidden;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

    h1, h2, h3, h4 {
      font-family: var(--font-serif);
      font-weight: 700;
      line-height: 1.3;
    }

    h1 {
      font-size: 48px;
      color: var(--primary);
    }

    h2 {
      font-size: 36px;
      color: var(--text-dark);
      margin-bottom: 16px;
    }

    h3 {
      font-size: 22px;
      font-weight: 600;
      color: var(--text-dark);
    }

    h4 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-dark);
    }

    .section {
      padding: var(--section-padding);
    }

    .section-header {
      text-align: center;
      margin-bottom: 60px;
    }

    .section-header h2 {
      position: relative;
      display: inline-block;
      padding-bottom: 16px;
    }

    .section-header h2::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 48px;
      height: 3px;
      background-color: var(--accent-gold);
      border-radius: 4px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-family: var(--font-sans);
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-size: 16px;
      transition: all 0.25s ease;
      cursor: pointer;
      border: 2px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background-color: var(--primary);
      color: white;
      border-color: var(--primary);
    }

    .btn-primary:hover {
      background-color: var(--primary-dark);
      border-color: var(--primary-dark);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }

    .btn-outline:hover {
      background-color: var(--primary-light);
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    .card {
      background: var(--bg-white);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-sm);
      padding: 32px;
      transition: all 0.3s ease;
    }

    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: var(--accent-gold);
    }

    .badge {
      display: inline-block;
      background-color: var(--accent-gold-light);
      color: var(--primary);
      font-weight: 700;
      font-family: var(--font-number);
      padding: 8px 18px;
      border-radius: 40px;
      font-size: 14px;
      letter-spacing: 0.5px;
    }

    .gold-badge {
      background-color: var(--accent-gold);
      color: white;
    }

    /* 导航栏 */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border-soft);
      box-shadow: var(--shadow-nav);
      height: 72px;
      display: flex;
      align-items: center;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    .logo {
      font-family: var(--font-serif);
      font-size: 24px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 2px;
    }

    .nav-menu {
      display: flex;
      gap: 32px;
      align-items: center;
      list-style: none;
    }

    .nav-menu a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 0;
      position: relative;
      transition: color 0.2s;
    }

    .nav-menu a:hover,
    .nav-menu a.active {
      color: var(--primary);
    }

    .nav-menu a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      border: none;
      cursor: pointer;
    }

    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--text-dark);
      transition: 0.3s;
    }

    /* Hero */
    .hero {
      display: flex;
      align-items: center;
      gap: 60px;
      padding: 80px 0;
    }

    .hero-left {
      flex: 1.2;
    }

    .hero-left h1 {
      font-size: 52px;
      margin-bottom: 24px;
      background: linear-gradient(135deg, #C44B3C 0%, #B03A2C 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 32px;
      max-width: 500px;
    }

    .hero-buttons {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }

    .hero-right {
      flex: 0.9;
      position: relative;
    }

    .hero-image {
      width: 100%;
      height: 420px;
      object-fit: cover;
      border-radius: var(--radius-img);
      background: #f0ede8;
    }

    .hero-badge {
      position: absolute;
      bottom: -16px;
      left: 20px;
      background: var(--accent-gold);
      color: white;
      font-weight: 700;
      font-family: var(--font-number);
      padding: 12px 24px;
      border-radius: 40px;
      font-size: 18px;
      box-shadow: var(--shadow-md);
    }

    /* 网格卡片 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--space-card);
    }

    .stat-number {
      font-family: var(--font-number);
      font-size: 38px;
      font-weight: 700;
      color: var(--primary);
      background: var(--accent-gold-light);
      display: inline-block;
      padding: 8px 20px;
      border-radius: 40px;
      margin-bottom: 20px;
    }

    /* 服务瀑布流 */
    .masonry-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .masonry-item {
      border-radius: var(--radius-card);
      background: white;
      overflow: hidden;
      border: 1px solid var(--border-soft);
      transition: 0.3s;
    }

    .masonry-item.large {
      grid-column: span 2;
    }

    .masonry-img {
      height: 220px;
      background: #eae0d5;
      object-fit: cover;
      width: 100%;
    }

    .masonry-content {
      padding: 24px;
    }

    /* 对比表 */
    .compare-row {
      display: flex;
      gap: 32px;
    }

    .compare-col {
      flex: 1;
      background: white;
      border-radius: var(--radius-card);
      padding: 40px;
      border: 1px solid var(--border-soft);
    }

    .compare-col.recommended {
      border: 2px solid var(--accent-gold);
      position: relative;
    }

    .recommend-badge {
      position: absolute;
      top: -14px;
      right: 24px;
      background: var(--accent-gold);
      color: white;
      padding: 6px 20px;
      border-radius: 20px;
      font-weight: 700;
    }

    /* 横向滚动案例 */
    .case-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 16px;
      scroll-snap-type: x mandatory;
    }

    .case-card {
      min-width: 280px;
      background: white;
      border-radius: 16px;
      overflow: hidden;
      scroll-snap-align: start;
      border: 1px solid var(--border-soft);
    }

    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .faq-item {
      background: white;
      border-radius: 12px;
      padding: 20px;
      border: 1px solid var(--border-soft);
    }

    summary {
      font-weight: 700;
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* CTA */
    .cta-band {
      background: linear-gradient(180deg, #FBF7F2 0%, #F5EDE4 100%);
      text-align: center;
      padding: 100px 24px;
    }

    /* 页脚 */
    .footer {
      background: #1E1E1E;
      color: #CCC;
      padding: 60px 24px 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }

    @media (max-width: 1024px) {
      .grid-3 { grid-template-columns: repeat(2,1fr); }
      .masonry-grid { grid-template-columns: repeat(2,1fr); }
      .faq-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      h1 { font-size: 38px; }
      .hero { flex-direction: column; }
      .nav-menu { display: none; }
      .hamburger { display: flex; }
      .grid-3, .masonry-grid { grid-template-columns: 1fr; }
      .compare-row { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .masonry-item.large { grid-column: span 1; }
    }