:root{--bg:#ffffff;--fg:#1d2327;--muted:#5b6670;--line:#e3e7ea;--accent:#1e8a4c;--soft:#f3f7f4}
@media (prefers-color-scheme:dark){:root{--bg:#121517;--fg:#e8ecee;--muted:#9aa5ad;--line:#2a3034;--accent:#4cc283;--soft:#1a201c}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
header{border-bottom:1px solid var(--line)}
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;height:60px}
.brand{font-weight:800;font-size:20px;color:var(--fg);text-decoration:none;letter-spacing:-.3px}
.brand span{color:var(--accent)}
nav a{color:var(--muted);text-decoration:none;font-size:14px;margin-left:16px}
nav a:hover,nav a[aria-current]{color:var(--fg)}
main{padding:32px 0 56px}
h1{font-size:30px;line-height:1.2;margin:0 0 6px;letter-spacing:-.4px}
.eff{color:var(--muted);margin:0 0 24px;font-size:14px}
h2{font-size:20px;margin:36px 0 10px;padding-top:4px}
p,li{margin:0 0 12px}
ul,ol{padding-left:22px;margin:0 0 16px}
a{color:var(--accent)}
.lead{font-size:17px}
.table{overflow-x:auto;margin:0 0 16px;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:14px;min-width:560px}
th,td{text-align:left;vertical-align:top;padding:10px 12px;border-bottom:1px solid var(--line)}
th{background:var(--soft);font-weight:600}
tr:last-child td{border-bottom:0}
.card{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:0 0 16px}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:13px}
footer .wrap{padding:20px 16px}
.links a{display:block;padding:14px 0;border-bottom:1px solid var(--line);text-decoration:none;font-weight:600}
.steps{margin:24px 0 8px}
.step{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line)}
.step h2{margin:2px 0 6px;font-size:18px;padding:0}
.num{flex:0 0 32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}
@media (prefers-color-scheme:dark){.num{color:#121517}}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-weight:600;padding:11px 18px;border-radius:10px;margin-top:4px}
@media (prefers-color-scheme:dark){.btn{color:#121517}}
.btn:hover{opacity:.9}

.lead{font-size:18px}
.note{background:var(--soft,rgba(76,194,131,.1));border-radius:10px;padding:12px 14px}
.faq{border-bottom:1px solid var(--line);padding:2px 0}
.faq summary{cursor:pointer;font-weight:600;padding:12px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;font-size:20px;line-height:1}
.faq[open] summary::after{content:"–"}
.faq div{padding:0 0 10px}
.faq div p{margin-top:0}

header nav a{white-space:nowrap}