/* roulang page: index */
:root {
      --color-primary: #0E3638;
      --color-primary-dark: #0A1D1E;
      --color-accent: #F2994A;
      --color-bg-light: #F9FAF8;
      --color-card-bg: #FFFFFF;
      --color-text-main: #181E1E;
      --color-text-body: #4B5554;
      --color-text-muted: #7C8886;
      --color-border: #E5E9E8;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--color-bg-light);
      color: var(--color-text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 16px 36px -8px rgba(14, 54, 56, 0.06);
    }
    .hero-bg {
      background-image: linear-gradient(135deg, rgba(14, 54, 56, 0.94) 0%, rgba(10, 29, 30, 0.92) 100%), url('/assets/images/c1b088dc7a3871bb.webp');
      background-size: cover;
      background-position: center;
    }
    .transition-smooth {
      transition: all 0.25s ease-out;
    }
    .card-hover:hover {
      transform: translateY(-4px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }