/* roulang page: index */
:root {
      --color-primary: #0F3E36;
      --color-primary-dark: #0A1C18;
      --color-accent: #C5A880;
      --color-accent-light: #F4EDE4;
      --color-bg-light: #F6F8F7;
      --color-text-main: #1F2937;
      --color-text-muted: #4B5563;
      --shadow-soft: 0 4px 20px -2px rgba(15, 62, 54, 0.06);
      --shadow-hover: 0 12px 30px -4px rgba(15, 62, 54, 0.12);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--color-text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: var(--shadow-soft);
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-shadow:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-2px);
    }
    .hero-bg {
      background: linear-gradient(135deg, rgba(15, 62, 54, 0.94) 0%, rgba(10, 28, 24, 0.96) 100%),
                  url('/assets/images/4012a018ce8489d5.jpg') center/cover no-repeat;
    }
    .dark-board-bg {
      background: linear-gradient(180deg, #0A1C18 0%, #06110F 100%);
    }
    .cta-banner-bg {
      background: linear-gradient(135deg, rgba(15, 62, 54, 0.96) 0%, rgba(10, 42, 36, 0.98) 100%),
                  url('/assets/images/c85d112b08f3ab37.webp') center/cover no-repeat;
    }
    .text-num {
      font-family: 'DIN Alternate', Roboto, -apple-system, sans-serif;
    }