:root {
  --fg: #1d211d;
  --muted: #545a54;
  --accent: #3e7040;
  --danger: #b3261e;
  --bg: #f7f8f5;
  --card: #ffffff;
  --line: #d8dcd4;
  --note-bg: #fff4d6;
  --note-fg: #5c4300;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #ececec;
    --muted: #b4b9b4;
    --accent: #8fc98f;
    --danger: #ff8a80;
    --bg: #141614;
    --card: #1e211e;
    --line: #3a3f3a;
    --note-bg: #3a3214;
    --note-fg: #f5e3a8;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--fg); background: var(--bg); }
a { color: var(--accent); }
header { border-bottom: 1px solid var(--line); background: var(--card); }
header .bar { max-width: 760px; margin: 0 auto; padding: 12px 16px; display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; }
header .brand { font-weight: 800; color: var(--accent); text-decoration: none; font-size: 1.15rem; }
header nav { display: flex; flex-wrap: wrap; gap: 4px 16px; }
header nav a { text-decoration: none; font-weight: 600; }
header nav a[aria-current="page"] { text-decoration: underline; }
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 56px; }
h1 { font-size: 1.75rem; line-height: 1.25; margin: 0 0 4px; }
h2 { font-size: 1.2rem; margin: 28px 0 8px; }
.meta { color: var(--muted); margin: 0 0 16px; }
.note { background: var(--note-bg); color: var(--note-fg); border-radius: 10px; padding: 12px 14px; margin: 16px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 16px 0; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; vertical-align: top; padding: 8px; border-bottom: 1px solid var(--line); }
.table-wrap { overflow-x: auto; }
label { display: block; margin: 12px 0 4px; font-weight: 600; }
input { width: 100%; padding: 10px; border: 1px solid var(--line); border-radius: 8px; font: inherit; background: transparent; color: inherit; }
button { margin: 12px 8px 0 0; padding: 10px 16px; border-radius: 999px; border: 1px solid var(--accent); background: var(--accent); color: #fff; font: inherit; font-weight: 600; cursor: pointer; }
button.secondary { background: transparent; color: var(--accent); }
button.danger { background: var(--danger); border-color: var(--danger); }
button:disabled { opacity: .5; cursor: default; }
#status { min-height: 1.6em; font-weight: 600; }
[hidden] { display: none !important; }
footer { max-width: 760px; margin: 0 auto; padding: 0 16px 32px; color: var(--muted); font-size: .9rem; }