:root {
  --bg: #f4efe6;
  --paper: #fffdf8;
  --ink: #1c1914;
  --muted: #5c564c;
  --line: #d8d0c4;
  --stamp: #b42318;
  --ok: #1f6b3a;
  --warn: #8a5a00;
  --btn: #1c1914;
  --btn-text: #fffdf8;
  --shadow: 0 1px 0 rgba(28, 25, 20, 0.06);
  --font: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Heiti SC", sans-serif;
  --mono: "Sarasa Mono SC", "Microsoft YaHei Mono", "Cascadia Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { font-size: 18px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font);
  line-height: 1.6;
}
a { color: var(--ink); }
code, .mono { font-family: var(--mono); letter-spacing: 0.02em; }
.wrap {
  width: min(920px, calc(100% - 32px));
  margin: 32px auto 64px;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 28px 28px 24px;
  margin-bottom: 20px;
}
h1, h2, h3 { margin: 0 0 12px; font-weight: 700; letter-spacing: 0; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.15rem; }
p { margin: 0 0 12px; color: var(--muted); }
label { display: block; font-weight: 650; margin: 14px 0 6px; }
.field-label { font-weight: 650; margin: 14px 0 8px; }
.choice-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.choice { margin: 0; cursor: pointer; }
.choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.choice-card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 72px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
}
.choice-card strong {
  font-size: 1rem;
  font-weight: 700;
}
.choice-card em {
  font-style: normal;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 400;
}
.choice input:checked + .choice-card {
  border-color: var(--ink);
  background: #f7f4ee;
  box-shadow: inset 0 0 0 1px var(--ink);
}
.choice input:focus-visible + .choice-card {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}
@media (max-width: 640px) {
  .choice-row { grid-template-columns: 1fr; }
}
input, select, textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 10px 12px;
}
textarea { min-height: 220px; resize: vertical; line-height: 1.5; }
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: end; }
.row > * { flex: 1; min-width: 180px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
button, .btn {
  font: inherit;
  font-weight: 700;
  border: 1px solid var(--btn);
  background: var(--btn);
  color: var(--btn-text);
  padding: 10px 16px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button.secondary, .btn.secondary {
  background: var(--paper);
  color: var(--ink);
}
button:hover, .btn:hover { filter: none; opacity: 0.92; }
.banner {
  padding: 12px 14px;
  margin: 0 0 16px;
  border: 1px solid var(--line);
  background: #f7f1e6;
}
.banner.err { border-color: var(--stamp); color: var(--stamp); background: #fbecea; }
.banner.ok { border-color: var(--ok); color: var(--ok); background: #eef6f0; }
.meta { font-size: 0.92rem; color: var(--muted); }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  text-align: left;
  padding: 8px 6px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { color: var(--muted); font-weight: 650; }
.tag {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid var(--line);
  font-size: 0.85rem;
}
.codes {
  white-space: pre-wrap;
  background: #f7f4ee;
  border: 1px solid var(--line);
  padding: 12px;
  font-family: var(--mono);
}
.nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  font-weight: 650;
}
.small { font-size: 0.9rem; }
hr { border: 0; border-top: 1px solid var(--line); margin: 22px 0; }