:root{--ink:#14161a;--muted:#5b6270;--line:#e4e6ea;--bg:#ffffff;--soft:#f6f7f9;--accent:#c2410c;--accent-soft:#fff4ec;--ok:#166534;--radius:10px;--max:960px}*{box-sizing:border-box}body,html{margin:0}body{font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}header.site{border-bottom:1px solid var(--line)}header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}.logo{font-weight:800;font-size:20px;color:var(--ink);letter-spacing:-.02em}.logo span{color:var(--accent)}nav.top a{color:var(--muted);margin-left:18px;font-size:15px}main{padding:28px 0 56px}h1{font-size:clamp(26px,4vw,36px);line-height:1.2;letter-spacing:-.02em;margin:0 0 12px}h2{font-size:22px;margin:36px 0 12px;letter-spacing:-.01em}h3{margin:20px 0 8px}h3,p.lead{font-size:18px}p.lead{margin:0 0 20px}.crumbs,p.lead{color:var(--muted)}.crumbs{font-size:14px;margin-bottom:14px}.crumbs a{color:var(--muted)}.answer{border:2px solid var(--accent);background:var(--accent-soft);border-radius:var(--radius);padding:18px 20px;margin:18px 0 8px}.answer .big{font-size:28px;font-weight:800}.answer .meta{color:var(--muted);font-size:15px}.card{border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin:12px 0;background:#fff}.grid{display:grid;grid-gap:12px;gap:12px;grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.grid a.card{display:block;color:var(--ink);margin:0}.grid a.card:hover{border-color:var(--accent);text-decoration:none}.tag{display:inline-block;font-size:13px;padding:2px 8px;border-radius:999px;background:var(--soft);color:var(--muted);margin:2px 4px 2px 0}table{width:100%;border-collapse:collapse;font-size:15px}td,th{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--soft);font-weight:600}.table-wrap{overflow-x:auto}ol.steps{padding-left:22px}ol.steps li{margin:6px 0}.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;border-radius:8px;padding:11px 18px;border:0;cursor:pointer;font-size:16px}.btn:hover{text-decoration:none;filter:brightness(.95)}.btn.ghost{background:#fff;color:var(--accent);border:1px solid var(--accent)}.source{font-size:14px;color:var(--muted);border-top:1px dashed var(--line);margin-top:28px;padding-top:12px}.finder{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:18px;margin:18px 0 28px}.finder .row{display:grid;grid-gap:10px;gap:10px;grid-template-columns:repeat(3,1fr)}.finder select{width:100%;padding:12px;font-size:16px;border:1px solid var(--line);border-radius:8px;background:#fff}.finder .msg{margin-top:12px;font-size:15px}.notice,footer.site{font-size:14px;color:var(--muted)}footer.site{border-top:1px solid var(--line);padding:24px 0 36px}footer.site a{color:var(--muted);margin-right:16px;display:inline-block;white-space:nowrap}@media (max-width:640px){.finder .row{grid-template-columns:1fr}nav.top a{margin-left:12px}}.form{display:grid;grid-gap:14px;gap:14px;max-width:560px;margin:8px 0 20px}.form label{display:grid;grid-gap:6px;gap:6px;font-size:15px;font-weight:600}.form input,.form textarea{font:inherit;font-weight:400;padding:10px 12px;border:1px solid var(--line);border-radius:8px}.form .hp{position:absolute;left:-9999px;width:1px;height:1px}.form .err{color:#b91c1c;margin:0}.prose h2{font-size:20px}.form .row3{display:grid;grid-gap:10px;gap:10px;grid-template-columns:1fr 1.4fr 1.4fr}.form label.check{display:flex;gap:8px;align-items:flex-start;font-weight:400}.form label.check input{margin-top:5px}figure.photo{margin:18px 0}figure.photo img{width:100%;height:auto;border-radius:var(--radius);display:block;background:var(--soft)}.credit,figure.photo figcaption{font-size:13px;color:var(--muted);margin-top:6px}.facts{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));grid-gap:10px;gap:10px;margin:14px 0}.facts div{background:var(--soft);border-radius:8px;padding:10px 12px}.facts b{display:block;font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em}.gallery{display:grid;grid-gap:10px;gap:10px;grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.gallery figure{margin:0}.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px}.diagram{max-width:460px;margin:12px 0}.diagram svg{width:100%;height:auto}.checklist li{margin:4px 0}.buybar{display:none}@media (max-width:640px){.form .row3{grid-template-columns:1fr}.buybar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:20;gap:10px;align-items:center;justify-content:space-between;padding:10px 16px;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 14px rgba(0,0,0,.06)}.buybar .btn{padding:9px 14px;font-size:15px}}.buybar-space{height:0}@media (max-width:640px){.buybar-space{height:72px}}