:root{--ink:#1f2933;--muted:#52606d;--accent:#2f6f8f;--bg:#f7f9fb;--card:#fff;--line:#d9e2ec}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
header{background:var(--card);border-bottom:1px solid var(--line)}
.wrap{max-width:820px;margin:0 auto;padding:0 20px}
.bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:16px 0}
.brand{font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none}
nav a{color:var(--accent);text-decoration:none;margin-left:16px;font-size:.95rem}
nav a:first-child{margin-left:0}
nav a:hover{text-decoration:underline}
main{padding:32px 0 48px}
h1{font-size:1.8rem;line-height:1.25;margin:0 0 12px}
h2{font-size:1.2rem;margin:28px 0 8px}
p,li{color:var(--ink)}
.muted{color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:20px 24px;margin:20px 0}
.disclosure{font-size:.92rem;color:var(--muted)}
label{display:block;font-weight:600;margin:14px 0 6px}
input[type=text],input[type=tel],input[type=email]{width:100%;max-width:360px;padding:10px 12px;border:1px solid var(--line);border-radius:6px;font-size:1rem}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:400;margin-top:18px}
.check input{margin-top:5px;flex:0 0 auto;width:18px;height:18px}
button{margin-top:18px;background:var(--accent);color:#fff;border:0;border-radius:6px;padding:11px 22px;font-size:1rem;cursor:pointer}
button:hover{filter:brightness(1.08)}
.hidden{display:none}
code,.num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#eef2f6;padding:1px 6px;border-radius:4px}
footer{border-top:1px solid var(--line);background:var(--card);font-size:.9rem;color:var(--muted)}
footer .wrap{padding:18px 20px}
footer a{color:var(--accent)}