:root {
  --bg: #f7f9fc;
  --paper: #fff;
  --ink: #0b1833;
  --muted: #5c6b80;
  --line: #d5e1ef;
  --blue: #0055cb;
  --soft: #eef4fc;
  --sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.7 var(--sans);
}
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}
.wrap { width: min(820px, calc(100% - 40px)); margin: 0 auto; padding: 22px 0 80px; }
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.brand img, .mast img { height: 28px; width: auto; display: block; }
.top-links { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 14px; color: var(--muted); }
.top-links a { white-space: nowrap; text-decoration: none; }
.top-links a:hover { color: var(--blue); }
.kicker {
  margin: 32px 0 0;
  font: 12px/1.5 var(--mono);
  letter-spacing: 0.08em;
  color: var(--blue);
}
h1 {
  margin: 8px 0 12px;
  font-size: clamp(32px, 4vw, 44px);
  letter-spacing: -0.04em;
  line-height: 1.2;
  font-weight: 560;
}
.lede { margin: 0; color: var(--muted); font-size: 16px; max-width: 62ch; }
.lede a { color: var(--blue); }
.tools { margin: 22px 0 8px; }
.tools input {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 14px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
}
.family { border-top: 1px solid var(--line); }
.family summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 18px;
  font-weight: 560;
  letter-spacing: -0.02em;
}
.family summary::-webkit-details-marker { display: none; }
.family summary .count {
  font: 12px/1 var(--mono);
  color: var(--muted);
  font-weight: 400;
}
.family-lede { margin: 0 0 6px; color: var(--muted); font-size: 14px; }
.entry {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 8px 12px;
  align-items: baseline;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
}
.entry:hover strong { color: var(--blue); }
.entry .num { font: 12px/1 var(--mono); color: var(--muted); }
.entry strong { display: block; font-size: 16px; font-weight: 560; }
.entry small { display: block; margin-top: 2px; color: var(--muted); font-size: 14px; }
.empty { display: none; margin: 24px 0; color: var(--muted); }
.page-foot, .article-foot {
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  color: var(--muted);
  font-size: 13px;
}
.page-foot a, .article-foot a, .back { color: var(--blue); text-decoration: none; }
.sheet {
  margin-top: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 22px 8px;
}
.mast {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.mast .num { font: 12px/1 var(--mono); color: var(--muted); white-space: nowrap; }
.sheet h1 { font-size: clamp(28px, 4vw, 36px); }
.en { margin: 0; color: var(--muted); font-size: 14px; }
.aka { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.sheet h2 { margin: 26px 0 6px; font-size: 16px; letter-spacing: -0.02em; }
.sheet p { margin: 0 0 8px; }
.related { margin: 8px 0 18px; padding: 0; list-style: none; }
.related a { color: var(--blue); text-decoration: none; }
.related li + li { margin-top: 6px; }
.crumb { margin: 22px 0 0; color: var(--muted); font-size: 13px; }
.crumb a { color: var(--blue); text-decoration: none; }
@media (max-width: 640px) {
  .top { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}