:root {
  color-scheme: light;
  --ink: #1c1915;
  --muted: #5e564c;
  --paper: #f3efe6;
  --card: #fffaf3;
  --line: #d9d0c3;
  --rust: #8f3d2b;
  --ok: #2f6b4f;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: var(--rust); }
.top {
  display: flex; gap: 1rem; align-items: center;
  padding: 0.8rem 1.2rem; border-bottom: 1px solid var(--line); background: var(--card);
}
.mark { color: inherit; text-decoration: none; font-weight: 700; letter-spacing: 0.02em; }
.mark span { color: var(--rust); font-weight: 500; }
.top nav { display: flex; gap: 0.4rem; }
.top button, form button, .ghost {
  background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 0.35rem 0.8rem; cursor: pointer;
}
.top button.on, form button { background: var(--ink); color: var(--paper); border-color: var(--ink); }
#who { margin-left: auto; color: var(--muted); }
#leave { color: var(--muted); }
main { padding: 1.2rem; max-width: 1100px; margin: 0 auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 0.8rem; }
.card, .sheet, .login-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1rem;
}
.card h2 { margin: 0.2rem 0; font-size: 1.3rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.chip { border: 1px solid var(--line); border-radius: 999px; padding: 0.1rem 0.5rem; font-size: 0.85rem; }
.eyebrow { letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.72rem; color: var(--muted); margin: 0; }
.lede { color: var(--muted); }
.err { color: var(--rust); }
.ok { color: var(--ok); }
label { display: grid; gap: 0.25rem; margin: 0.6rem 0; }
input, textarea, select { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 0.45rem 0.6rem; }
textarea { min-height: 8rem; width: 100%; }
.row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: end; }
.tabs { display: flex; gap: 0.4rem; margin: 1rem 0; }
.login-body { min-height: 100vh; display: grid; place-items: center; }
.login-card { width: min(420px, calc(100% - 2rem)); }
.sheet { width: min(760px, calc(100% - 2rem)); margin: 2rem auto; }
.doc { border-top: 1px solid var(--line); padding-top: 1rem; white-space: pre-wrap; }
.msg { border-bottom: 1px solid var(--line); padding: 0.45rem 0; }
.msg b { font-size: 0.9rem; }
@media (max-width: 700px) {
  .top { flex-wrap: wrap; }
  #who { margin-left: 0; }
}