/* roulang page: index */
:root {
      --primary: #2563eb;
      --primary-dark: #1e40af;
      --accent: #06b6d4;
      --text-main: #0f172a;
      --text-muted: #475569;
      --bg-page: #f8fafc;
      --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --card-hover-shadow: 0 16px 32px -4px rgba(37, 99, 235, 0.12);
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      background-color: var(--bg-page);
      color: var(--text-main);
      overflow-x: hidden;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    .custom-shadow {
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .custom-shadow:hover {
      box-shadow: var(--card-hover-shadow);
      transform: translateY(-3px);
    }

    .dark-card-glow {
      box-shadow: 0 0 25px rgba(6, 182, 212, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .progress-circle {
      transform: rotate(-90deg);
      transform-origin: 50% 50%;
    }

    /* Accordion Custom */
    details > summary {
      list-style: none;
    }
    details > summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary svg {
      transform: rotate(180deg);
    }