/* roulang page: index */
:root {
      --primary-gold: #C8A96E;
      --secondary-charcoal: #2D2A26;
      --bg-warm: #FBF7F2;
      --accent-brick: #B5463A;
      --card-bg: #FFFFFF;
      --text-body: #4A4642;
      --text-muted: #8C8780;
      --footer-text: #C4BFB8;
      --shadow-sm: 0 4px 20px rgba(45,42,38,0.06);
      --shadow-hover: 0 8px 30px rgba(45,42,38,0.12);
      --radius-card: 16px;
      --radius-pill: 50px;
      --font-serif: 'Noto Serif SC', 'Times New Roman', serif;
      --font-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      --transition: 0.3s ease;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-body);
      line-height: 1.6;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    h1, h2, h3 {
      font-family: var(--font-serif);
      color: var(--secondary-charcoal);
      font-weight: 700;
      letter-spacing: 0.5px;
    }

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

    /* 悬浮胶囊导航 */
    .capsule-nav {
      position: fixed;
      top: 16px;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 32px);
      max-width: 1100px;
      background: rgba(251, 247, 242, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-radius: 50px;
      padding: 10px 28px;
      box-shadow: 0 3px 14px rgba(45,42,38,0.09);
      display: flex;
      align-items: center;
      justify-content: space-between;
      z-index: 99;
      transition: var(--transition);
    }

    .logo-text {
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 1.5rem;
      color: var(--primary-gold);
      letter-spacing: 1px;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      gap: 24px;
      align-items: center;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .nav-links a {
      font-size: 1rem;
      font-weight: 500;
      color: var(--secondary-charcoal);
      padding: 6px 0;
      border-bottom: 2px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .nav-links a:hover {
      color: var(--primary-gold);
      border-bottom-color: var(--primary-gold);
    }

    /* 区块间距 */
    section {
      padding: 90px 0;
    }

    @media (max-width: 640px) {
      section {
        padding: 60px 0;
      }
    }

    /* Hero */
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 40px;
      flex-wrap: wrap;
    }

    .hero-left {
      flex: 1 1 50%;
    }

    .hero-right {
      flex: 1 1 40%;
      position: relative;
      min-height: 320px;
    }

    .hero-graphic {
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 30% 40%, rgba(200,169,110,0.18) 0%, rgba(251,247,242,0) 70%);
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .decor-circle {
      width: 260px;
      height: 260px;
      border: 2px dashed rgba(200,169,110,0.5);
      border-radius: 50%;
      position: absolute;
    }

    .decor-arc {
      width: 200px;
      height: 200px;
      border: 2px solid rgba(181,70,58,0.35);
      border-radius: 50%;
      position: absolute;
      top: 30px;
      right: 20px;
    }

    .hero-title {
      font-size: 3.5rem;
      margin-bottom: 1rem;
      color: var(--secondary-charcoal);
    }

    .hero-title span {
      color: var(--primary-gold);
      display: block;
    }

    .hero-sub {
      font-size: 1.3rem;
      color: var(--text-body);
      margin-bottom: 2rem;
      max-width: 480px;
    }

    .btn-primary {
      background: var(--accent-brick);
      color: white;
      border-radius: 50px;
      padding: 14px 38px;
      font-weight: 600;
      font-size: 1rem;
      display: inline-block;
      border: none;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 4px 12px rgba(181,70,58,0.3);
      text-align: center;
    }

    .btn-primary:hover {
      background: #9A3B30;
      color: white;
      box-shadow: 0 8px 18px rgba(181,70,58,0.4);
    }

    .btn-ghost {
      color: var(--primary-gold);
      border: 1px solid var(--primary-gold);
      background: transparent;
      border-radius: 50px;
      padding: 12px 32px;
      font-weight: 500;
      margin-left: 16px;
      transition: var(--transition);
      display: inline-block;
    }

    .btn-ghost:hover {
      background: var(--primary-gold);
      color: white;
    }

    .text-link {
      color: var(--primary-gold);
      font-weight: 500;
      margin-left: 20px;
      border-bottom: 1px solid transparent;
    }

    .text-link:hover {
      border-bottom-color: var(--primary-gold);
    }

    @media (max-width: 1024px) {
      .hero-title {
        font-size: 2.8rem;
      }
    }

    @media (max-width: 640px) {
      .hero-grid {
        flex-direction: column;
      }
      .hero-right {
        min-height: 220px;
        width: 100%;
      }
      .hero-title {
        font-size: 2.5rem;
      }
      .btn-ghost {
        margin-left: 0;
        margin-top: 12px;
      }
    }

    /* 服务卡片 - 不同高度交错 */
    .services-grid {
      display: flex;
      gap: 30px;
      flex-wrap: wrap;
      justify-content: center;
    }

    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      flex: 1 1 280px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .service-card:nth-child(2) {
      transform: translateY(-18px);
      box-shadow: 0 10px 28px rgba(45,42,38,0.1);
    }

    .service-card:hover {
      transform: translateY(-10px);
      box-shadow: var(--shadow-hover);
    }

    .service-icon {
      width: 64px;
      height: 64px;
      background: rgba(200,169,110,0.12);
      border-radius: 20px;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-gold);
      font-size: 2rem;
    }

    .service-card h3 {
      font-size: 1.5rem;
      margin-bottom: 10px;
    }

    .service-desc {
      color: var(--text-muted);
      margin-bottom: 20px;
      flex: 1;
    }

    .more-link {
      color: var(--primary-gold);
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* 优势数据 */
    .stats-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 40px;
    }

    .stat-badge {
      text-align: center;
    }

    .stat-number {
      font-size: 3rem;
      font-weight: 700;
      color: var(--accent-brick);
      font-family: 'DIN', 'Noto Sans SC', monospace;
    }

    .stat-label {
      color: var(--text-muted);
      font-size: 1rem;
      margin-top: 8px;
    }

    /* 案例网格 2x2 不对称 */
    .cases-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 24px;
    }

    .case-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .case-img {
      height: 180px;
      background: #f0ebe2;
      background-size: cover;
      background-position: center;
    }

    .case-content {
      padding: 20px;
    }

    .case-tag {
      color: var(--primary-gold);
      border: 1px solid var(--primary-gold);
      border-radius: 20px;
      padding: 4px 14px;
      font-size: 0.8rem;
      display: inline-block;
      margin-bottom: 10px;
    }

    @media (max-width: 768px) {
      .cases-grid {
        grid-template-columns: 1fr;
      }
    }

    /* 解决方案图文 */
    .solution-row {
      display: flex;
      align-items: center;
      gap: 40px;
      margin-bottom: 60px;
      flex-wrap: wrap;
    }

    .solution-img {
      flex: 1 1 45%;
      background: #e8dfd1;
      border-radius: 24px;
      height: 260px;
      background-size: cover;
    }

    .solution-text {
      flex: 1 1 45%;
    }

    /* FAQ */
    .accordion-title {
      background: white;
      border-radius: 12px;
      padding: 16px 20px;
      font-weight: 600;
      color: var(--secondary-charcoal);
      border: none;
      width: 100%;
      text-align: left;
      cursor: pointer;
      transition: background 0.2s;
    }

    .accordion-title:hover {
      background: #f7f2ea;
    }

    .accordion-content {
      padding: 0 20px 16px;
      color: var(--text-body);
    }

    /* CTA */
    .cta-box {
      background: var(--secondary-charcoal);
      border-radius: 36px;
      padding: 60px 30px;
      text-align: center;
      color: white;
    }

    .footer {
      background: var(--secondary-charcoal);
      color: var(--footer-text);
      padding: 40px 0 20px;
    }

    .footer a {
      color: var(--footer-text);
    }