/* roulang page: index */
:root {
      --sand-gold: #C8A96E;
      --deep-brown: #2B1D14;
      --ivory-white: #F5F0E8;
      --dark-red: #8B3A3A;
      --dark-red-hover: #A04545;
      --bg-warm: #1E1810;
      --footer-bg: #1A120C;
      --text-light: #F5F0E8;
      --text-muted: #B7A99A;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
      --shadow-hover: 0 8px 30px rgba(0,0,0,0.5);
      --border-gold: 1px solid #C8A96E;
      --radius-card: 8px;
      --radius-btn: 4px;
      --transition-base: 0.25s ease;
    }

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

    body {
      font-family: 'Inter', 'Noto Sans SC', '思源黑体 CN', sans-serif;
      background-color: var(--bg-warm);
      color: #E0D7C6;
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      background-image: radial-gradient(circle at 25% 30%, rgba(200,169,110,0.08) 0%, transparent 45%);
    }

    h1, h2, h3, h4 {
      font-family: 'Cormorant Garamond', 'Noto Serif SC', '思源宋体 CN', serif;
      font-weight: 600;
      color: var(--ivory-white);
    }

    h1 { font-size: 48px; line-height: 1.15; }
    h2 { font-size: 36px; line-height: 1.2; }
    h3 { font-size: 24px; line-height: 1.3; }
    .section-title {
      margin-bottom: 24px;
      position: relative;
      display: inline-block;
    }
    .section-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -8px;
      width: 60px;
      height: 1px;
      background: var(--sand-gold);
    }

    a {
      color: var(--sand-gold);
      text-decoration: none;
      transition: color 0.2s;
    }
    a:hover {
      color: #DFC184;
    }

    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 浮动Dock导航 */
    .nav-dock {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 40px);
      max-width: 960px;
      background: rgba(43,29,20,0.88);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-radius: 50px;
      padding: 0 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      z-index: 99;
      box-shadow: 0 10px 30px rgba(0,0,0,0.5);
      border: 1px solid rgba(200,169,110,0.25);
      transition: transform 0.3s ease;
    }
    .nav-dock.scrolled {
      transform: translateX(-50%) scale(0.98);
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .logo-text {
      font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
      font-size: 1.5rem;
      font-weight: 600;
      color: var(--sand-gold);
      letter-spacing: 1px;
    }
    .logo-icon {
      font-size: 1.6rem;
      filter: drop-shadow(0 0 6px rgba(200,169,110,0.6));
    }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    .nav-links a {
      color: #D4C5B2;
      font-size: 0.95rem;
      font-weight: 500;
      letter-spacing: 0.3px;
      transition: 0.2s;
    }
    .nav-links a:hover {
      color: var(--sand-gold);
    }
    .nav-cta {
      background: var(--dark-red);
      color: white !important;
      padding: 10px 24px;
      border-radius: 30px;
      font-weight: 500;
      margin-left: 10px;
    }
    .nav-cta:hover {
      background: var(--dark-red-hover);
      box-shadow: 0 0 15px rgba(200,169,110,0.4);
    }
    .menu-icon {
      display: none;
      font-size: 1.8rem;
      color: var(--sand-gold);
    }

    /* Hero双栏 */
    .hero-section {
      padding: 160px 0 100px;
      display: flex;
      align-items: center;
      gap: 60px;
    }
    .hero-left {
      flex: 7;
    }
    .hero-right {
      flex: 5;
      position: relative;
    }
    .hero-right img {
      width: 100%;
      border-radius: 12px;
      box-shadow: 0 0 0 2px rgba(200,169,110,0.3), 0 20px 40px rgba(0,0,0,0.6);
    }
    .hero-sub {
      font-size: 18px;
      color: #C5B69A;
      margin: 20px 0 32px;
      font-weight: 300;
    }
    .btn-group {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--dark-red);
      color: white;
      padding: 14px 34px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      display: inline-block;
      transition: var(--transition-base);
      border: none;
    }
    .btn-primary:hover {
      background: var(--dark-red-hover);
      box-shadow: 0 0 18px rgba(200,169,110,0.5);
      color: white;
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--sand-gold);
      color: var(--sand-gold);
      padding: 14px 34px;
      border-radius: var(--radius-btn);
      font-weight: 500;
      transition: var(--transition-base);
    }
    .btn-outline:hover {
      background: rgba(200,169,110,0.1);
      color: var(--sand-gold);
    }

    /* 亮点不对称网格 */
    .highlights-grid {
      display: grid;
      grid-template-columns: 1.618fr 1fr 1fr;
      gap: 24px;
      margin: 80px 0;
    }
    .highlight-card {
      background: var(--ivory-white);
      border-radius: var(--radius-card);
      padding: 28px 24px;
      box-shadow: var(--shadow-card);
      border-left: 4px solid var(--sand-gold);
      transition: var(--transition-base);
      color: #2B1D14;
    }
    .highlight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .highlight-card h3 {
      color: #2B1D14;
    }
    .highlight-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: 6px;
      margin-bottom: 16px;
    }

    /* 服务方案对比 */
    .compare-panel {
      display: flex;
      gap: 30px;
      margin: 80px 0;
    }
    .compare-card {
      flex: 1;
      background: var(--ivory-white);
      border-radius: var(--radius-card);
      padding: 36px 28px;
      box-shadow: var(--shadow-card);
      color: #2B1D14;
    }
    .compare-card h3 {
      color: #2B1D14;
    }
    .diamond-icon {
      color: var(--sand-gold);
      margin-right: 8px;
    }

    /* 案例瀑布流 */
    .case-waterfall {
      column-count: 3;
      column-gap: 24px;
      margin: 60px 0;
    }
    .case-card {
      background: var(--ivory-white);
      border-radius: var(--radius-card);
      overflow: hidden;
      margin-bottom: 24px;
      box-shadow: var(--shadow-card);
      break-inside: avoid;
      transition: var(--transition-base);
      color: #2B1D14;
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .case-card img {
      width: 100%;
      display: block;
    }
    .case-content {
      padding: 18px;
    }

    /* 数据带 */
    .stats-scroll {
      display: flex;
      gap: 50px;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      padding: 30px 0;
    }
    .stat-item {
      flex: 0 0 auto;
      scroll-snap-align: start;
      text-align: center;
    }
    .stat-number {
      font-size: 48px;
      font-weight: 600;
      color: var(--sand-gold);
    }

    /* FAQ */
    .accordion-faq {
      max-width: 800px;
      margin: 0 auto;
    }
    .accordion-item {
      background: var(--ivory-white);
      border-radius: var(--radius-card);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .accordion-title {
      background: transparent;
      color: #2B1D14;
      font-weight: 600;
      padding: 20px 24px;
      border-left: 4px solid transparent;
      transition: 0.2s;
    }
    .is-active .accordion-title {
      border-left-color: var(--sand-gold);
    }

    /* CTA区域 */
    .cta-full {
      background: #2B1D14;
      border-radius: 16px;
      padding: 60px;
      text-align: center;
      margin: 80px 0;
    }
    .cta-form input {
      background: rgba(245,240,232,0.9);
      border: 1px solid var(--sand-gold);
      border-radius: 4px;
      padding: 12px;
    }

    footer {
      background: var(--footer-bg);
      padding: 50px 0 30px;
      color: #9B8C7C;
    }

    @media (max-width: 768px) {
      h1 { font-size: 36px; }
      .hero-section {
        flex-direction: column;
        padding-top: 130px;
      }
      .highlights-grid {
        grid-template-columns: 1fr;
      }
      .compare-panel {
        flex-direction: column;
      }
      .case-waterfall {
        column-count: 2;
      }
      .nav-links {
        display: none;
      }
      .menu-icon {
        display: block;
      }
    }