:root {
  --red: #c8102e;
  --red-dark: #9e0c24;
  --ink: #1c1e21;
  --ink-soft: #4b5563;
  --bg: #f6f7f9;
  --card: #ffffff;
  --line: #e2e5ea;
  --link: #0b5cad;
  --chip-t: #eef4fb;
  --chip-t-ink: #0b5cad;
  --chip-ta: #fdf0f2;
  --chip-ta-ink: #a30f26;
  --chip-m: #eefaf1;
  --chip-m-ink: #157347;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* header */
.site-header {
  background: #171a1f;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
}
.header-inner {
  max-width: 1160px; margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: 8px; color: #fff; }
.brand:hover { text-decoration: none; }
.brand-mark {
  background: var(--red); color: #fff; font-weight: 700;
  padding: 2px 8px; border-radius: 4px; letter-spacing: .5px;
}
.brand-text { font-size: .95rem; font-weight: 600; }
.main-nav { display: flex; gap: 4px; }
.main-nav a {
  color: #d5d9e0; padding: 6px 12px; border-radius: 6px; font-size: .95rem;
}
.main-nav a:hover { color: #fff; background: rgba(255,255,255,.08); text-decoration: none; }
.main-nav a.active { color: #fff; background: var(--red); }

.search-wrap { position: relative; margin-left: auto; flex: 0 1 340px; min-width: 220px; }
#search {
  width: 100%; padding: 8px 12px; border-radius: 8px; border: 1px solid #3a3f47;
  background: #22262c; color: #fff; font-size: .9rem;
}
#search::placeholder { color: #8a919c; }
#search:focus { outline: 2px solid var(--red); border-color: var(--red); }
.search-results {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0;
  background: var(--card); color: var(--ink);
  border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 12px 30px rgba(0,0,0,.18);
  max-height: 420px; overflow-y: auto; z-index: 60;
}
.search-results a {
  display: block; padding: 8px 12px; border-bottom: 1px solid var(--line);
  color: var(--ink); font-size: .88rem;
}
.search-results a:last-child { border-bottom: none; }
.search-results a:hover { background: var(--bg); text-decoration: none; }
.search-results .sr-id { font-family: var(--mono); color: var(--ink-soft); margin-right: 8px; font-size: .8rem; }
.search-results .sr-en { color: var(--ink-soft); font-size: .8rem; display: block; }
.search-results .sr-empty { padding: 10px 12px; color: var(--ink-soft); font-size: .88rem; }

/* main */
main { padding: 28px 20px 60px; min-height: 60vh; }
.loading { color: var(--ink-soft); }

.page-title { font-size: 1.5rem; margin: 0 0 4px; }
.page-title .en { color: var(--ink-soft); font-weight: 400; font-size: 1rem; margin-left: 10px; }
.page-lead { color: var(--ink-soft); margin: 0 0 24px; font-size: .95rem; }

/* ID chips */
.id-chip {
  font-family: var(--mono); font-size: .78rem; font-weight: 600;
  padding: 1px 7px; border-radius: 999px; white-space: nowrap;
}
.id-chip.t { background: var(--chip-t); color: var(--chip-t-ink); }
.id-chip.ta { background: var(--chip-ta); color: var(--chip-ta-ink); }
.id-chip.m { background: var(--chip-m); color: var(--chip-m-ink); }
a.id-link { font-family: var(--mono); font-weight: 600; }

/* matrix */
.matrix-scroll { overflow-x: auto; padding-bottom: 12px; }
.matrix { display: flex; gap: 10px; align-items: flex-start; min-width: max-content; }
.matrix-col { width: 190px; flex: none; }
.matrix-col-head {
  background: var(--red); color: #fff; border-radius: 8px 8px 0 0;
  padding: 8px 10px; text-align: center;
}
.matrix-col-head a { color: #fff; display: block; }
.matrix-col-head a:hover { text-decoration: none; opacity: .92; }
.matrix-col-head .ja { font-weight: 700; font-size: .9rem; display: block; line-height: 1.35; }
.matrix-col-head .en { font-size: .72rem; opacity: .85; display: block; }
.matrix-col-head .count { font-size: .7rem; opacity: .8; }
.matrix-cell {
  background: var(--card); border: 1px solid var(--line); border-top: none;
  padding: 6px 8px; font-size: .8rem; line-height: 1.45;
}
.matrix-cell:last-child { border-radius: 0 0 8px 8px; }
.matrix-cell a { color: var(--ink); display: block; }
.matrix-cell a:hover { color: var(--link); }
.matrix-cell .mc-id { font-family: var(--mono); font-size: .68rem; color: var(--ink-soft); }
.matrix-cell .mc-sub { color: var(--ink-soft); font-size: .68rem; }

/* card list */
.card-list { display: grid; gap: 12px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 18px;
}
.card h3 { margin: 0 0 2px; font-size: 1.05rem; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.card h3 a { color: var(--ink); }
.card h3 a:hover { color: var(--link); }
.card .en-name { color: var(--ink-soft); font-weight: 400; font-size: .85rem; }
.card .card-desc { margin: 6px 0 0; font-size: .9rem; color: var(--ink-soft); }
.card .meta { margin-top: 8px; display: flex; gap: 6px; flex-wrap: wrap; align-items: center; font-size: .78rem; color: var(--ink-soft); }

/* filter bar */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; align-items: center; }
.filter-bar select, .filter-bar input {
  padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); font-size: .9rem; color: var(--ink);
}
.filter-bar .hit-count { font-size: .85rem; color: var(--ink-soft); }
.toggle-subs { display: inline-flex; align-items: center; gap: 6px; font-size: .88rem; color: var(--ink-soft); }

/* detail page */
.detail-head { margin-bottom: 20px; }
.crumbs { font-size: .82rem; color: var(--ink-soft); margin-bottom: 10px; }
.crumbs a { color: var(--ink-soft); }
.detail-head h2 { margin: 0; font-size: 1.6rem; line-height: 1.4; }
.detail-head .en-name { display: block; color: var(--ink-soft); font-weight: 400; font-size: 1.05rem; }
.detail-badges { margin-top: 10px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; font-size: .85rem; }
.badge {
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  padding: 2px 12px; font-size: .8rem; color: var(--ink-soft);
}
.ext-link { font-size: .82rem; }

.bilingual { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 18px 0 26px; }
@media (max-width: 860px) { .bilingual { grid-template-columns: 1fr; } }
.pane {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px;
}
.pane .pane-label {
  font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-soft); margin-bottom: 8px; display: flex; align-items: center; gap: 6px;
}
.pane .pane-label::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--red); }
.pane.en .pane-label::before { background: #64748b; }
.pane p { margin: 0 0 12px; font-size: .93rem; }
.pane p:last-child { margin-bottom: 0; }
.pane.en p { color: #374151; }
.pane code { font-family: var(--mono); font-size: .85em; background: #f1f3f6; padding: 1px 5px; border-radius: 4px; }

.section { margin: 26px 0; }
.section > h3 {
  font-size: 1.05rem; margin: 0 0 12px; padding-left: 10px;
  border-left: 4px solid var(--red);
}
.rel-table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; font-size: .9rem; }
.rel-table-wrap { overflow-x: auto; border-radius: 12px; }
.rel-table th, .rel-table td { text-align: left; padding: 9px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.rel-table th { background: #f1f3f6; font-size: .8rem; color: var(--ink-soft); white-space: nowrap; }
.rel-table tr:last-child td { border-bottom: none; }
.rel-table td.id-cell { white-space: nowrap; font-family: var(--mono); font-size: .82rem; }
.rel-table .en-small { color: var(--ink-soft); font-size: .8rem; display: block; }

.empty-note { color: var(--ink-soft); font-size: .9rem; }

/* home hero */
.hero { margin-bottom: 26px; }
.hero h1 { font-size: 1.7rem; margin: 0 0 8px; }
.hero p { color: var(--ink-soft); max-width: 860px; margin: 0 0 6px; }
.stat-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 14px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 18px; min-width: 130px;
}
.stat .num { font-size: 1.4rem; font-weight: 700; color: var(--red); }
.stat .label { font-size: .8rem; color: var(--ink-soft); }
.stat a { color: inherit; display: block; }
.stat a:hover { text-decoration: none; }

/* footer */
.site-footer {
  border-top: 1px solid var(--line); background: #eceef1;
  padding: 24px 0 34px; font-size: .78rem; color: var(--ink-soft);
}
.site-footer p { margin: 0 0 8px; }

.back-top { font-size: .85rem; }