/* roulang page: index */
:root {
      --primary: #0F766E;
      --primary-hover: #0D9488;
      --dark: #0B0F19;
      --bg-light: #F8FAFC;
      --text-main: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
      font-feature-settings: "cv02", "cv03", "cv04", "cv11";
    }
    .custom-shadow {
      box-shadow: 0 4px 24px -2px rgba(15, 118, 110, 0.06);
    }
    .hover-card-rise {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .hover-card-rise:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -4px rgba(15, 118, 110, 0.12);
      border-color: var(--primary);
    }
    .code-pill {
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s cubic-bezier(0, 1, 0, 1);
    }
    .accordion-content.expanded {
      max-height: 500px;
      transition: max-height 0.45s ease-in-out;
    }
    .pulse-dot {
      animation: pulseGlow 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }
    @keyframes pulseGlow {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.15); }
    }