:root {
  --navy: #16304f;
  --navy-2: #1e4577;
  --ink: #1c2430;
  --muted: #5c6773;
  --line: #d8dee6;
  --hair: #e7ebf0;
  --paper: #f3f1eb;
  --card: #fffcf8;
  --soft: #f4f7fb;
  --gold: #6a4e20;
  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC", Palatino, "Times New Roman", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--navy-2); }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 252, 248, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(1.2) blur(8px);
}
.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  font-family: var(--serif);
  color: var(--navy);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.docnav { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.docnav a {
  color: var(--navy);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 4px 11px;
  font-size: 13px;
  background: transparent;
}
.docnav a:hover { background: var(--soft); }
.docnav a.on {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.sheet {
  max-width: 1180px;
  margin: 22px auto 48px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 36px 40px 28px;
}
h1 {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--navy);
  letter-spacing: 0.03em;
  border-bottom: 0;
  margin: 0 0 8px;
  padding: 0 0 14px;
  border-bottom: 2px solid var(--navy);
}
.subtitle { color: var(--muted); font-size: 13.5px; margin: 10px 0 22px; }
h2 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--navy);
  margin: 36px 0 12px;
  padding: 0 0 0 12px;
  border-left: 3px solid var(--navy);
}
h3 { font-size: 15px; margin-top: 22px; color: #1c6b58; }
p { margin: 10px 0; }
table { width: 100%; border-collapse: collapse; margin: 14px 0 8px; font-size: 13.5px; }
th, td { border: 0; border-bottom: 1px solid var(--hair); padding: 10px 12px; text-align: left; vertical-align: top; }
th {
  background: var(--navy);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-bottom: 0;
}
tbody tr:nth-child(even) td { background: #f7f9fc; }
tbody tr:hover td { background: #eef3f8; }
tfoot td { font-weight: 650; color: var(--navy); background: #e8eef6; border-top: 1px solid var(--navy-2); }
.meta-table { margin-top: 8px; }
.meta-table td { border: 1px solid var(--line); }
.meta-table td:first-child {
  width: 128px;
  background: var(--soft);
  font-weight: 650;
  color: var(--navy);
  white-space: nowrap;
}
.meta-table tbody tr:nth-child(even) td,
.meta-table tr:hover td { background: var(--card); }
.meta-table tbody tr:nth-child(even) td:first-child,
.meta-table tr:hover td:first-child,
.meta-table td:first-child { background: var(--soft); }
td.mid { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; color: var(--navy); font-weight: 650; }
code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  background: var(--soft);
  padding: 1px 5px;
  border-radius: 4px;
}
.nums { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; margin: 8px 0 16px; }
.num {
  background: var(--soft);
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy);
  border-radius: 8px;
  padding: 12px 14px 10px;
}
.num.opt { border-top-color: var(--gold); }
.num b { display: block; font-family: var(--serif); font-size: 26px; color: var(--navy); line-height: 1.15; font-weight: 600; }
.num span { display: block; margin-top: 4px; font-size: 12.5px; color: var(--muted); }
.note-box {
  background: #fbf6e8;
  border: 1px solid #e6d7a8;
  border-left: 3px solid #c4a15a;
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  margin: 14px 0;
  font-size: 13.5px;
  color: #5c4a1e;
}
.v, .tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 650;
  line-height: 1.5;
  border-radius: 999px;
  padding: 1px 8px;
  white-space: nowrap;
}
.tag { color: var(--navy); background: #e8eef6; margin-right: 4px; border-radius: 4px; }
.v-part, .v-v1 { background: #e8eef6; color: #1a4170; }
.v-miss { background: #f8e8e6; color: #8a3a32; }
.v-none { background: #eef1f4; color: #5c6773; }
.v-weak, .v-opt { background: #fbf6e8; color: #6a4e20; }
.v-base, .v-done { background: #e5f3ee; color: #1c6b58; }
.scroll {
  overflow-x: auto;
  margin: 12px 0 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.scroll table { min-width: 880px; margin: 0; }
.scroll th:first-child { border-radius: 0; }
.scroll td, .scroll th { border-left: 0; border-right: 0; }
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy);
  border-radius: 10px;
  padding: 16px 18px 14px;
  background: #fff;
}
.card:hover { background: var(--soft); }
.card .no {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gold);
}
.card h2 {
  font-size: 18px;
  margin: 4px 0 6px;
  padding: 0;
  border: 0;
}
.card p { margin: 0; font-size: 14px; color: var(--ink); }
.chain { margin: 8px 0 4px; }
.chain-item { display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: start; }
.chain-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-size: 13px;
  font-weight: 650;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
}
.chain-body {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
}
.chain-body b { color: var(--navy); }
.chain-arrow { width: 28px; text-align: center; color: var(--muted); line-height: 1; padding: 4px 0; }
ol.steps { padding-left: 22px; margin: 8px 0 0; }
ol.steps li { margin: 8px 0; }
strong { color: var(--navy); }
footer {
  margin-top: 40px;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  color: var(--muted);
  font-size: 12px;
  text-align: left;
}
@media (max-width: 860px) {
  .topbar-inner { flex-direction: column; align-items: flex-start; padding: 10px 14px; }
  .sheet { margin: 12px; padding: 22px 16px 18px; }
  .nums, .cards { grid-template-columns: 1fr; }
  h1 { font-size: 24px; }
}
@media print {
  body { background: #fff; }
  .topbar { display: none; }
  .sheet { border: 0; margin: 0; max-width: none; padding: 0; }
  tbody tr:hover td { background: inherit; }
  th, .chain-num, .v, .tag { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}
@media (prefers-color-scheme: dark) {
  :root {
    --navy: #9ec0ea;
    --navy-2: #b7d0f0;
    --ink: #e6ebf2;
    --muted: #9aa3ae;
    --line: #2c3440;
    --hair: #2a3140;
    --paper: #12161c;
    --card: #1a1f27;
    --soft: #222833;
    --gold: #e0c375;
  }
  .topbar { background: rgba(26, 31, 39, 0.94); }
  .brand, h1, h2, strong, .num b, td.mid, tfoot td, .card h2 { color: #9ec0ea; }
  .docnav a { color: #d5deea; }
  .docnav a.on { background: #1e4577; color: #fff; border-color: #1e4577; }
  .card { background: #1a1f27; }
  .card:hover, tbody tr:hover td { background: #262d3a; }
  th { background: #1e3a5f; color: #f4f7fb; }
  tbody tr:nth-child(even) td { background: #20262f; }
  tfoot td { background: #243044; }
  .meta-table td:first-child { background: #222833; color: #9ec0ea; }
  .note-box { background: #2a2416; border-color: #5a4a1f; color: #e0c375; }
  .v-part, .v-v1, .tag { background: #243044; color: #b7d0f0; }
  .v-miss { background: #3a2422; color: #f0b4ae; }
  .v-none { background: #2a303a; color: #b7c0cc; }
  .v-weak { background: #332c22; color: #e0c9a0; }
  .v-base, .v-done { background: #1a332c; color: #9ddec8; }
  code { background: #222833; color: #e6ebf2; }
}