:root{
  --bg:#f5f7fb;
  --panel:#ffffff;
  --text:#1f2937;
  --muted:#64748b;
  --line:#dbe3ef;
  --brand:#246bfd;
  --brand-soft:#eaf1ff;
  --ok:#067647;
  --warn:#9a6700;
  --danger:#b42318;
  --code:#0f172a;
  --shadow:0 10px 30px rgba(15,23,42,.08);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b1220;--panel:#111a2b;--text:#e5edf7;--muted:#9fb0c5;
    --line:#26344a;--brand:#78a6ff;--brand-soft:#16284a;--code:#070b12;
    --shadow:0 10px 30px rgba(0,0,0,.28);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN",
  "Yu Gothic",Meiryo,sans-serif;line-height:1.8;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.topbar{
  position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--panel) 92%,transparent);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
}
.topbar-inner{max-width:1240px;margin:auto;padding:12px 20px;display:flex;gap:14px;align-items:center}
.brand{font-weight:800;letter-spacing:.02em}
.brand small{display:block;color:var(--muted);font-weight:600;font-size:11px;line-height:1.2}
.search{margin-left:auto;display:flex;gap:8px;align-items:center}
.search input{
  width:min(320px,45vw);padding:10px 12px;border:1px solid var(--line);border-radius:12px;
  background:var(--panel);color:var(--text)
}
.layout{max-width:1240px;margin:auto;display:grid;grid-template-columns:270px minmax(0,1fr);gap:24px;padding:26px 20px 60px}
.sidebar{position:sticky;top:82px;height:calc(100vh - 100px);overflow:auto}
.nav-card,.card{
  background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
}
.nav-card{padding:14px}
.nav-card h3{font-size:13px;color:var(--muted);margin:4px 8px 10px}
.nav-card a{display:block;padding:9px 10px;border-radius:10px;color:var(--text);font-size:14px}
.nav-card a:hover,.nav-card a.active{background:var(--brand-soft);color:var(--brand);text-decoration:none}
.main{min-width:0}
.hero{
  padding:34px;border-radius:24px;background:
  radial-gradient(circle at top right,rgba(36,107,253,.25),transparent 34%),
  linear-gradient(135deg,var(--panel),var(--brand-soft));
  border:1px solid var(--line);box-shadow:var(--shadow);margin-bottom:24px
}
.hero .eyebrow{font-weight:800;color:var(--brand);letter-spacing:.08em;font-size:12px}
.hero h1{font-size:clamp(28px,5vw,48px);line-height:1.15;margin:.35em 0}
.hero p{max-width:780px;color:var(--muted);font-size:17px}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.badge{padding:6px 10px;border-radius:999px;background:var(--panel);border:1px solid var(--line);font-size:12px;font-weight:700}
.section{scroll-margin-top:88px;margin:24px 0;padding:26px;background:var(--panel);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.section h2{margin-top:0;font-size:27px;line-height:1.3}
.section h3{margin-top:1.7em;line-height:1.4}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.mini{padding:16px;border:1px solid var(--line);border-radius:14px;background:color-mix(in srgb,var(--panel) 88%,var(--brand-soft))}
.mini h3{margin:0 0 6px;font-size:17px}
.note,.tip,.warn{
  padding:15px 17px;border-radius:14px;margin:16px 0;border-left:5px solid
}
.note{background:var(--brand-soft);border-color:var(--brand)}
.tip{background:rgba(6,118,71,.10);border-color:var(--ok)}
.warn{background:rgba(154,103,0,.12);border-color:var(--warn)}
pre{
  overflow:auto;background:var(--code);color:#dbeafe;padding:18px;border-radius:14px;
  font-size:13px;line-height:1.6;border:1px solid #26344a
}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
table{width:100%;border-collapse:collapse;display:block;overflow:auto}
th,td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;min-width:130px}
th{font-size:13px;color:var(--muted)}
.flow{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:14px 0}
.flow span{padding:9px 12px;border-radius:999px;background:var(--brand-soft);border:1px solid var(--line);font-weight:700}
.flow b{color:var(--muted)}
.footer{color:var(--muted);font-size:13px;text-align:center;padding:28px}
mark{background:#fff2a8;color:#3b2f00;border-radius:4px;padding:0 2px}
.hidden-by-search{display:none!important}
@media(max-width:860px){
  .layout{grid-template-columns:1fr;padding:14px}
  .sidebar{position:static;height:auto}
  .nav-card{display:flex;overflow:auto;gap:5px}
  .nav-card h3{display:none}
  .nav-card a{white-space:nowrap}
  .grid{grid-template-columns:1fr}
  .hero,.section{padding:20px}
  .search input{width:42vw}
}