:root{--navy:#0b1f3a;--navy2:#122a4d;--red:#d62828;--ink:#f5f7fa;--muted:#a0aec0;--card:#152f57;--gold:#ffc43d}
*{box-sizing:border-box}
body{margin:0;background:var(--navy);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;padding:0 16px}
.wrap{max-width:760px;margin:0 auto;padding:28px 0 60px}
nav.top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:6px 0 18px;border-bottom:1px solid var(--navy2);margin-bottom:24px}
nav.top a{color:var(--ink);text-decoration:none;font-weight:600;font-size:15px}
nav.top a.brand{display:flex;align-items:center;gap:8px;margin-right:auto;font-size:18px}
nav.top svg{width:30px;height:30px}
h1{font-size:30px;line-height:1.2;margin:0 0 8px}
h2{font-size:21px;margin:30px 0 8px;border-bottom:2px solid var(--red);display:inline-block;padding-bottom:3px}
h3{font-size:17px;margin:20px 0 6px}
p{margin:10px 0}
.meta{color:var(--muted);font-size:14px;margin-bottom:18px}
.tldr{background:var(--card);border-left:4px solid var(--gold);border-radius:8px;padding:12px 16px;margin:18px 0}
.tldr strong{color:var(--gold)}
.card{background:var(--card);border-radius:12px;padding:16px 18px;margin:14px 0}
.notice{background:var(--red);color:#fff;border-radius:10px;padding:10px 14px;font-weight:600;margin:0 0 20px;font-size:15px}
.code{font-size:24px;font-weight:700;letter-spacing:2px;background:var(--navy);border:1px dashed var(--muted);border-radius:8px;padding:8px 14px;display:inline-block;margin:6px 0}
a{color:#ffb3b3}
.btn{display:inline-block;background:var(--red);color:#fff;text-decoration:none;font-weight:700;padding:11px 18px;border-radius:8px;margin-top:6px;border:0;cursor:pointer;font-size:16px}
.btn.alt{background:var(--navy2)}
table{border-collapse:collapse;width:100%;margin:12px 0;font-size:15px}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--navy2)}
th{color:var(--muted);font-weight:600}
.tablewrap{overflow-x:auto}
ol,ul{padding-left:22px}
li{margin:6px 0}
.small{color:var(--muted);font-size:14px}
footer{margin-top:44px;color:var(--muted);font-size:14px;border-top:1px solid var(--navy2);padding-top:18px}
.faq h3{margin-top:16px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:560px){.grid{grid-template-columns:1fr}}
label{display:block;font-size:14px;color:var(--muted);margin:10px 0 4px}
input,select{width:100%;padding:10px;border-radius:8px;border:1px solid var(--navy2);background:var(--navy);color:var(--ink);font-size:16px}
.result{background:var(--navy);border:1px solid var(--navy2);border-radius:10px;padding:14px 16px;margin-top:14px}
.result .big{font-size:26px;font-weight:700;color:var(--gold)}
canvas{width:100%;max-width:100%;background:var(--navy);border-radius:8px;border:1px solid var(--navy2)}
.cta{background:var(--card);border-radius:12px;padding:16px 18px;margin:26px 0}
.related a{display:block;margin:6px 0}