/* === Design Tokens === */
:root {
  /* Colors */
  --paper-main: #F5EDE0;
  --paper-card: #FAF7F0;
  --paper-alt: #EBE0C8;
  --brand-green: #2A5C40;
  --ink-brown: #3C2E1A;
  --seal-brown: #6B4A23;
  --sub-gray: #8A8070;
  --stamp-orange: #D96B2B;

  /* Spacing (8px grid) */
  --sp-xs: 8px;
  --sp-sm: 16px;
  --sp-md: 24px;
  --sp-lg: 48px;
  --sp-xl: 96px;
  --sp-2xl: 128px;

  /* Container */
  --container-max: 1200px;
  --container-gutter: max(24px, 4vw);

  /* Font stacks */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", -apple-system, "Helvetica Neue", system-ui, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-brown);
  background: var(--paper-main);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: transparent; }

/* === Container utility === */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-gutter);
  padding-right: var(--container-gutter);
}

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

/* === Accessibility: focus indicator === */
:focus-visible {
  outline: 2px solid var(--brand-green);
  outline-offset: 3px;
  border-radius: 4px;
}