:root{
  --bg:#0e1116; --panel:#161b23; --line:#242c38; --fg:#e6edf3; --muted:#8a97a8;
  --accent:#4f8cff; --accent-2:#7ce0b4; --danger:#ff6b6b; --radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--fg); min-height:100vh; display:flex; flex-direction:column;
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.top{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(14,17,22,.92);
  backdrop-filter:blur(8px);z-index:10;
}
.brand{display:flex;align-items:center;gap:9px;color:var(--fg);font-weight:600;letter-spacing:.2px}
.brand:hover{text-decoration:none}
.top nav{display:flex;align-items:center;gap:18px;font-size:14px}
.top nav a{color:var(--muted)}
.top nav a:hover{color:var(--fg);text-decoration:none}
select{background:var(--panel);color:var(--fg);border:1px solid var(--line);border-radius:8px;padding:5px 8px;font-size:13px}
main{flex:1;width:100%;max-width:880px;margin:0 auto;padding:28px 20px 64px}
h1{font-size:26px;line-height:1.25;margin:0 0 6px;font-weight:650}
h2{font-size:18px;margin:28px 0 10px;font-weight:600}
h3{font-size:15px;margin:20px 0 8px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
p{margin:8px 0}
.muted{color:var(--muted)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
input[type=text],input[type=search],textarea{
  width:100%;background:#0b0f14;color:var(--fg);border:1px solid var(--line);border-radius:10px;
  padding:12px 14px;font:15px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;outline:none
}
input:focus,textarea:focus{border-color:var(--accent)}
button{
  background:var(--accent);color:#fff;border:0;border-radius:10px;padding:11px 18px;font-size:14px;font-weight:600;
  cursor:pointer
}
button.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
button:disabled{opacity:.5;cursor:default}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:500;font-size:12.5px;text-transform:uppercase;letter-spacing:.05em}
td.mono,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all}
.algos{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;margin-top:10px}
.algos a{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px 12px;color:var(--fg);font-size:14px}
.algos a:hover{border-color:var(--accent);text-decoration:none}
pre{background:#0b0f14;border:1px solid var(--line);border-radius:10px;padding:14px;overflow:auto;font-size:13px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.tag{display:inline-block;font-size:12px;padding:2px 8px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.tag.warn{border-color:#5b3a1a;color:#ffb86b}
.bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:16px 20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.notice{background:#1d2430;border:1px solid #2b3648;border-radius:10px;padding:12px 14px;font-size:14px}
.botbtn{display:inline-block;background:var(--accent);color:#fff;padding:11px 18px;border-radius:10px;font-weight:600}
.botbtn:hover{text-decoration:none;filter:brightness(1.08)}
.err{color:var(--danger)}
@media (max-width:560px){ h1{font-size:22px} .top nav{gap:12px} main{padding:20px 14px 48px} }