:root {
  --page: #F5EFE3;
  --card: #FFFDF8;
  --ink: #2A2620;
  --muted: rgba(42, 38, 32, 0.7);
  --accent: #0F7F63;
  --marigold: #A2640A;
  --edge: rgba(42, 38, 32, 0.12);
  --shadow: 3px 3px 0 rgba(42, 38, 32, 0.12);
}
@media (prefers-color-scheme: dark) {
  :root {
    --page: #1C1A16;
    --card: #26231E;
    --ink: #EFE9DD;
    --muted: rgba(239, 233, 221, 0.7);
    --accent: #28A07D;
    --marigold: #F0B455;
    --edge: rgba(239, 233, 221, 0.14);
    --shadow: 3px 3px 0 rgba(0, 0, 0, 0.45);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 24px 16px 64px;
  background: var(--page);
  color: var(--ink);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 40rem; margin: 0 auto; }
nav { display: flex; justify-content: space-between; align-items: center; font-size: 0.95rem; }
nav a { color: var(--ink); text-decoration: none; }
.brand { font-weight: 800; font-size: 1.25rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 1.6rem 0 0.4rem; }
h2 { font-size: 1.2rem; margin: 2rem 0 0.4rem; }
p, ul { margin: 0.6rem 0; }
ul { padding-left: 1.3rem; }
a { color: var(--accent); text-underline-offset: 3px; }
.meta { color: var(--muted); font-size: 0.9rem; }
/* Paper cards with a solid offset shadow, as in the app; never a blur. */
.card { background: var(--card); border: 1px solid var(--edge); border-radius: 18px; box-shadow: var(--shadow); padding: 18px 20px; margin: 16px 0; }
.hero h1 { font-size: clamp(2.2rem, 7vw, 3.4rem); line-height: 1.05; letter-spacing: -0.02em; }
.lead { font-size: 1.15rem; }
.done { color: var(--marigold); font-weight: 700; }
footer { margin-top: 3rem; color: var(--muted); font-size: 0.9rem; }
footer a { color: var(--muted); margin-right: 1rem; }