@layer base {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  body {
    margin: 0;
    min-height: 100vh;
    color: var(--fg-1);
    background:
      radial-gradient(1200px 800px at 8% -10%, var(--glow-1), transparent 60%),
      radial-gradient(900px 600px at 100% 0%, var(--glow-2), transparent 60%),
      var(--bg-0);
    font-family: var(--font);
    font-size: var(--text-14);
    font-feature-settings: "cv11", "ss01";
    line-height: var(--lh-normal);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

  h1, h2, h3, h4 {
    margin: 0;
    color: var(--fg-0);
    font-weight: var(--fw-title);
    line-height: var(--lh-snug);
    letter-spacing: -0.015em;
  }

  p, ol, ul, dl, dd, figure {
    margin: 0;
  }

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

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

  button, input, select, textarea {
    font: inherit;
    color: inherit;
  }

  code, kbd, .mono {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
  }

  strong {
    color: var(--fg-0);
    font-weight: var(--fw-semibold);
  }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  [hidden] {
    display: none !important;
  }

  .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .skip-link {
    position: absolute;
    top: var(--sp-8);
    left: var(--sp-8);
    z-index: 9999;
    padding: var(--sp-8) var(--sp-12);
    border-radius: var(--r-6);
    color: #fff;
    background: var(--accent);
    transform: translateY(-200%);
  }

  .skip-link:focus {
    transform: none;
  }

  /* Composition primitives (not utilities): spacing between siblings. */
  .stack {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: var(--stack-gap, var(--sp-16));
  }

  .stack--sm { --stack-gap: var(--sp-8); }
  .stack--lg { --stack-gap: var(--sp-24); }

  .cluster {
    display: flex;
    min-width: 0;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--cluster-gap, var(--sp-8));
  }

  .cluster--end { justify-content: flex-end; }
  .cluster--between { justify-content: space-between; }

  .muted { color: var(--fg-2); }

  .link {
    color: var(--accent);
    font-weight: var(--fw-medium);
  }

  .link:hover {
    text-decoration: underline;
    text-underline-offset: 2px;
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }
}