:root{--fg:#14161a;--muted:#5b6370;--bg:#fff;--accent:#1f4ed8;--line:#e4e7ec}@media (prefers-color-scheme:dark){:root{--fg:#eef0f3;--muted:#9aa3b0;--bg:#0f1115;--accent:#6d8cff;--line:#272b33}}*{box-sizing:border-box}body{background:var(--bg);color:var(--fg);margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,sans-serif}a{color:var(--accent)}.nav{justify-content:space-between;align-items:center;max-width:880px;margin:0 auto;padding:16px;display:flex}.logo{color:var(--fg);font-size:20px;font-weight:700;text-decoration:none}main,.foot{max-width:880px;margin:0 auto;padding:0 16px}.hero{padding:48px 0 24px}.hero h1{margin:8px 0 16px;font-size:clamp(28px,5vw,44px);line-height:1.15}.sub{color:var(--muted);max-width:700px;font-size:18px}.tag{color:var(--accent);text-transform:uppercase;letter-spacing:.04em;margin:0;font-size:14px;font-weight:600}.btn{background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:8px;padding:12px 22px;font-size:16px;font-weight:600}.note{color:var(--muted);font-size:14px}.section{border-top:1px solid var(--line);padding:28px 0}.center{text-align:center}.grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:16px;display:grid}.card{border:1px solid var(--line);color:var(--fg);border-radius:10px;flex-direction:column;gap:6px;padding:14px;text-decoration:none;display:flex}.card span{color:var(--muted);font-size:14px}.steps li,.qs li{margin-bottom:10px}.tbl{border-collapse:collapse;width:100%;margin-bottom:24px}.tbl th,.tbl td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:10px}.foot{color:var(--muted);border-top:1px solid var(--line);padding-top:24px;padding-bottom:40px;font-size:13px}.alt{margin-left:12px;font-size:14px}