:root {
  --bg: #ffffff;
  --fg: #0b0b0b;
  --accent: #00e5a8;
  --accent-ink: #007a5a;
  --muted: #f2f2f2;
  --border: #0b0b0b;
  --faint: #525252;
  --radius: 4px;
  --healthy: #8ef0cf;
  --warning: #ffc857;
  --error: #ff6b6b;
  --external: #b8dcff;
  --font-ui: Inter, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --font-mono: "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, "Noto Mono", monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  max-width: 980px;
  margin: 28px auto 48px;
  padding: 26px 28px 40px;
  border: 6px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--muted), transparent 40%);
  color: var(--fg);
  font-family: var(--font-ui);
  font-size: 1.0625rem;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
code {
  font-family: var(--font-mono);
  background: var(--bg);
  padding: 1px 6px;
  border: 2px dashed var(--border);
  border-radius: 2px;
  font-size: 0.86em;
}
pre {
  overflow-x: auto;
  padding: 16px 18px;
  border: 3px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}
pre code { border: 0; padding: 0; background: transparent; font-size: inherit; }
.doc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.doc-nav a {
  padding: 5px 11px;
  border: 3px solid var(--border);
  background: var(--bg);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-decoration: none;
}
.doc-nav a:hover { background: var(--accent); }
header {
  margin-bottom: 26px;
  padding-bottom: 20px;
  border-bottom: 4px solid var(--border);
}
header h1 {
  display: inline-block;
  padding: 6px 16px;
  margin-bottom: 14px;
  border: 3px solid var(--border);
  background: var(--bg);
  border-radius: 2px;
  font-size: clamp(1.7rem, 1.3rem + 1.8vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.subtitle { font-size: 1.08rem; color: var(--fg); max-width: 66ch; margin-bottom: 8px; }
.meta { font-family: var(--font-mono); font-size: 0.74rem; color: var(--faint); }
main { padding: 0; }
section { margin-bottom: 38px; }
h2 {
  display: table;
  padding: 6px 14px;
  margin: 30px 0 16px;
  border: 3px solid var(--border);
  background: var(--bg);
  border-radius: 2px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
h2::before {
  content: "";
  display: inline-block;
  width: 11px;
  height: 11px;
  margin-right: 9px;
  vertical-align: 2px;
  background: var(--accent);
  border: 3px solid var(--border);
}
h3 {
  margin: 26px 0 10px;
  padding-left: 10px;
  border-left: 6px solid var(--accent);
  font-size: 1.05rem;
  font-weight: 700;
}
p { margin-bottom: 1rem; max-width: 74ch; }
ul, ol { margin: 0 0 1rem 1.3rem; }
li { margin-bottom: 0.3rem; }
strong { font-weight: 700; }
.card {
  border: 4px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 16px 18px;
  margin-bottom: 16px;
}
.card-title { font-weight: 700; font-size: 1rem; margin-bottom: 8px; }
.card-title::before {
  content: "■";
  color: var(--accent);
  -webkit-text-stroke: 1px var(--border);
  margin-right: 7px;
  font-size: 0.85em;
}
.highlight-box {
  border: 3px solid var(--border);
  border-left: 12px solid var(--accent);
  border-radius: 2px;
  background: var(--bg);
  padding: 14px 16px;
  margin: 16px 0;
  font-size: 0.94rem;
}
.highlight-box p:last-child { margin-bottom: 0; }
.table-wrap { overflow-x: auto; border: 3px solid var(--border); border-radius: var(--radius); background: var(--bg); margin-bottom: 1rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 2px solid var(--border); vertical-align: top; }
th { background: var(--muted); font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }
.bench-chart { display: flex; flex-direction: column; gap: 10px; margin: 12px 0 4px; }
.bench-row { display: flex; align-items: center; gap: 10px; }
.bench-label { width: 190px; flex-shrink: 0; font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; text-align: right; }
.bench-bar-wrap { flex: 1; height: 22px; border: 2px solid var(--border); border-radius: 2px; background: var(--bg); overflow: hidden; }
.bench-bar { height: 100%; background: var(--accent); border-right: 2px solid var(--border); }
.bench-val { width: 64px; flex-shrink: 0; font-family: var(--font-mono); font-size: 0.74rem; font-weight: 700; }
.sample-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.sample-card { border: 4px solid var(--border); border-radius: var(--radius); background: var(--bg); overflow: hidden; }
.sample-header {
  padding: 10px 14px;
  border-bottom: 3px solid var(--border);
  background: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
}
.sample-card pre { margin: 0; border: 0; border-radius: 0; }
.sample-desc { padding: 10px 14px; border-top: 3px solid var(--border); font-size: 0.84rem; line-height: 1.7; }
.footer, footer { margin-top: 34px; padding-top: 18px; border-top: 4px solid var(--border); font-family: var(--font-mono); font-size: 0.8rem; color: var(--faint); }
footer p { margin-bottom: 4px; }
.mermaid-box, .tree {
  border: 3px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 14px 16px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.65;
  white-space: pre-wrap;
  overflow-x: auto;
}
.tree .comment { color: var(--faint); }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.steps { list-style: none; margin-left: 0; display: flex; flex-direction: column; gap: 14px; }
.steps li { border: 4px solid var(--border); border-radius: var(--radius); padding: 14px 16px; background: var(--bg); }
.steps strong { display: block; margin-bottom: 4px; }
.legend { display: flex; flex-wrap: wrap; gap: 10px 18px; margin: 12px 0; }
.legend-item { display: flex; align-items: center; gap: 7px; font-size: 0.84rem; }
.legend-dot { width: 13px; height: 13px; border: 2px solid var(--border); border-radius: 2px; }
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 1px 7px;
  border: 2px dashed var(--border);
  border-radius: 2px;
  background: var(--bg);
  margin-right: 4px;
}
.section-note { font-size: 0.86rem; color: var(--faint); }
@media (min-width: 760px) { .sample-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 720px) {
  body { margin: 14px; padding: 20px 16px 30px; border-width: 4px; }
  .cols { grid-template-columns: 1fr; }
  .bench-label { width: 120px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  body { margin: 0; border: 0; padding: 0; background: #fff; }
  pre { white-space: pre-wrap; word-break: break-all; }
  section, .sample-card, .card { break-inside: avoid; }
}
@page { size: A4; margin: 16mm; }