:root{
  --bg:#f7f8fb;
  --card:#ffffff;
  --accent:#0067b8;
  --muted:#666;
}
*{box-sizing:border-box}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;background:var(--bg);color:#222;margin:0}
.container{max-width:980px;margin:0 auto;padding:24px}
.site-header{background:#fff;border-bottom:1px solid #e6e9ef}
.site-header .container{display:flex;align-items:center;gap:16px}
.logo{height:40px}
nav{margin-left:auto;display:flex;gap:12px}
nav a{color:var(--muted);text-decoration:none;padding:12px;border-radius:6px}
nav a.active{background:rgba(0,103,184,0.08);color:var(--accent)}
.hero{padding:36px 0}
.hero h1{margin:0 0 8px;font-size:28px}
.btn{background:var(--accent);color:#fff;padding:10px 14px;border-radius:8px;text-decoration:none;border:none;cursor:pointer}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid rgba(0,103,184,0.12)}
.overview, .sample{margin-top:20px}
.card{background:var(--card);padding:16px;border-radius:8px;box-shadow:0 1px 3px rgba(0,0,0,0.04)}
.controls{margin-top:8px;display:flex;gap:8px}
.output{background:#f3f6fb;padding:12px;border-radius:6px;min-height:80px;white-space:pre-wrap}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin-top:12px}
.feature{background:var(--card);padding:12px;border-radius:8px}
.site-footer{padding:12px 0;text-align:center;color:var(--muted);margin-top:24px;border-top:1px solid #e6e9ef}
.steps{background:var(--card);padding:12px;border-radius:8px}
.checklist{margin-top:12px}
/* Host display */
.host-info{margin-top:8px;font-size:13px;color:var(--muted)}
.host-info a{color:var(--accent);text-decoration:none}
.host-badge{font-size:12px;color:var(--muted);margin-left:12px}
.host-badge a{color:var(--accent);text-decoration:none}