:root{
  --bg:#0B1220; --bg-card:#131C2E; --bg-soft:#1B2540; --fg:#E6EAF3; --fg-sub:#9AA5BC;
  --accent:#3B82F6; --accent2:#60A5FA; --border:#243149; --warn:#F59E0B; --ok:#22C55E; --term:#A78BFA;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);
  font-family:-apple-system,"Segoe UI Variable","Segoe UI","Yu Gothic UI","Meiryo UI",sans-serif;
  line-height:1.8;font-size:15.5px}
a{color:var(--accent2);text-decoration:none}
a:hover{color:#fff;text-decoration:underline}
header.site{position:sticky;top:0;z-index:50;background:rgba(11,18,32,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border)}
header.site .inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;gap:22px;padding:12px 20px}
header.site .brand{font-family:"Segoe UI Black","Segoe UI",sans-serif;font-weight:900;font-size:19px;letter-spacing:.3px}
header.site .brand b{color:var(--accent2)}
header.site .tm{font-size:.62em;vertical-align:sub;color:var(--fg-sub);font-weight:700;margin-left:2px}
header.site .beta{color:var(--warn);font-weight:700;font-size:15px;margin-left:9px}
header.site .ver{color:var(--fg-sub);font-size:12px;margin-left:6px;font-weight:400}
header.site nav{margin-left:auto;display:flex;gap:18px;flex-wrap:wrap}
header.site nav a{color:var(--fg-sub);font-size:14px}
header.site nav a:hover{color:#fff}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.hero{padding:72px 20px 48px;text-align:center;background:
  radial-gradient(ellipse 80% 60% at 50% -10%, rgba(59,130,246,.22), transparent 70%)}
.hero h1{font-size:44px;margin:0 0 14px;line-height:1.25}
.hero h1 b{color:var(--accent2)}
.hero p.lead{font-size:18px;color:var(--fg-sub);max-width:720px;margin:0 auto 26px}
.btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:8px}
.btn{display:inline-block;padding:12px 24px;border-radius:10px;font-weight:700;font-size:15px}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent2);text-decoration:none}
.btn.ghost{border:1px solid var(--border);color:var(--fg)}
.btn.ghost:hover{border-color:var(--accent2);text-decoration:none}
.notice{max-width:860px;margin:28px auto 0;background:var(--bg-card);border:1px solid var(--warn);
  border-left-width:4px;border-radius:10px;padding:14px 18px;color:var(--fg-sub);font-size:14px;text-align:left}
.notice b{color:var(--warn)}
section.block{padding:48px 0}
section.block h2.sec{font-size:28px;margin:0 0 6px;text-align:center}
section.block p.sub{color:var(--fg-sub);text-align:center;margin:0 auto 34px;max-width:680px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:22px}
.card h3{margin:0 0 8px;font-size:17px}
.card .ico{font-size:26px;margin-bottom:10px}
.card p{margin:0;color:var(--fg-sub);font-size:14px}
.shots{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}
.shots figure{margin:0;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.shots img{width:100%;display:block;background:#000}
.shots figcaption{padding:10px 14px;font-size:13px;color:var(--fg-sub)}
footer.site{border-top:1px solid var(--border);padding:30px 20px;color:var(--fg-sub);font-size:13px;text-align:center}
/* ---- 記事(マニュアル/機能) ---- */
.doc{display:grid;grid-template-columns:260px 1fr;gap:36px;max-width:1180px;margin:0 auto;padding:30px 20px 80px;align-items:start}
.toc{position:sticky;top:70px;max-height:calc(100vh - 90px);overflow:auto;background:var(--bg-card);
  border:1px solid var(--border);border-radius:12px;padding:14px 16px;font-size:13.5px}
.toc h4{margin:2px 0 10px;font-size:13px;color:var(--fg-sub);text-transform:uppercase;letter-spacing:.5px}
.toc a{display:block;color:var(--fg-sub);padding:3px 0}
.toc a:hover{color:#fff;text-decoration:none}
.toc a.h3{padding-left:14px;font-size:12.5px;opacity:.85}
article.content{min-width:0}
article.content h1{font-size:32px;margin:0 0 18px;padding-bottom:14px;border-bottom:1px solid var(--border)}
article.content h2{font-size:24px;margin:42px 0 12px;padding-top:12px;border-top:1px solid var(--border)}
article.content h3{font-size:18px;margin:28px 0 10px;color:var(--accent2)}
article.content p{margin:12px 0}
article.content ul,article.content ol{margin:12px 0;padding-left:26px}
article.content li{margin:5px 0}
article.content code{background:var(--bg-soft);padding:2px 6px;border-radius:5px;font-size:13px;
  font-family:"Cascadia Code","Consolas",monospace;color:#cdd6f4}
article.content pre.ascii{background:#070C16;border:1px solid var(--border);border-radius:10px;
  padding:14px;overflow:auto;font-size:12px;line-height:1.4}
article.content pre.ascii code{background:none;padding:0;color:var(--fg-sub)}
article.content table{border-collapse:collapse;width:100%;margin:16px 0;font-size:14px}
article.content th,article.content td{border:1px solid var(--border);padding:8px 11px;text-align:left;vertical-align:top}
article.content th{background:var(--bg-soft)}
article.content hr{border:none;border-top:1px solid var(--border);margin:30px 0}
blockquote.callout{margin:16px 0;background:var(--bg-card);border-left:4px solid var(--accent);
  border-radius:0 10px 10px 0;padding:12px 18px;color:var(--fg-sub)}
blockquote.callout.term{border-left-color:var(--term)}
blockquote.callout.warn{border-left-color:var(--warn)}
blockquote.callout.tip{border-left-color:var(--ok)}
blockquote.callout strong{color:var(--fg)}
@media(max-width:880px){.doc{grid-template-columns:1fr}.toc{position:static;max-height:none}.hero h1{font-size:32px}}