:root {
  --bg: #08080f; --surface: #12121c; --border: #252538; --text: #d4d4d8;
  --muted: #8b8b97; --green: #4ade80; --gold: #fbbf24;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, sans-serif; line-height: 1.65;
}
a { color: var(--green); }
.wrap { max-width: 720px; margin: 0 auto; padding: 24px 16px 64px; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; font-size: 14px; }
.brand { font-weight: 800; color: #f0f0f0; text-decoration: none; font-size: 18px; }
.brand span { color: var(--green); }
.top nav a { color: var(--muted); text-decoration: none; margin-left: 14px; }
.top nav a:first-child { margin-left: 0; }
.top nav a:hover { color: var(--green); }
h1 { font-size: 30px; line-height: 1.2; color: #f0f0f0; margin: 0 0 10px; letter-spacing: -0.5px; }
h2 { font-size: 20px; color: #f0f0f0; margin: 40px 0 10px; }
.lead { color: var(--muted); font-size: 16px; margin: 0 0 24px; }
.tool { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.tool label { display: block; font-size: 13px; color: var(--muted); margin: 0 0 6px; }
.tool textarea {
  width: 100%; min-height: 96px; resize: vertical; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px; padding: 12px; font-size: 16px;
  font-family: 'Courier New', ui-monospace, monospace;
}
.tool textarea:focus { outline: none; border-color: var(--green); }
.tool .out { margin-top: 14px; }
.tool .out textarea { color: var(--green); }
.row { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 8px; min-height: 32px; }
.status { font-size: 13px; color: var(--gold); }
button {
  background: var(--green); color: var(--bg); border: 0; border-radius: 8px; padding: 8px 16px;
  font-weight: 700; font-size: 14px; cursor: pointer;
}
button:disabled { opacity: 0.4; cursor: default; }
.toggle { display: flex; gap: 6px; margin-bottom: 12px; }
.toggle button { background: var(--bg); color: var(--muted); border: 1px solid var(--border); }
.toggle button[aria-pressed="true"] { color: var(--green); border-color: var(--green); }
.gift { margin-top: 18px; border: 1px solid #1f3d2a; background: #0a160f; border-radius: 14px; padding: 16px; }
.gift p { margin: 0 0 12px; font-size: 14px; }
.gift-links { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; }
.gift-links a {
  display: block; text-decoration: none; background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 12px; color: var(--text); font-size: 14px;
}
.gift-links a:hover { border-color: var(--green); }
.gift-links b { display: block; color: var(--green); font-size: 13px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { border-bottom: 1px solid var(--border); padding: 6px 8px; text-align: left; }
td code, p code { font-family: 'Courier New', ui-monospace, monospace; color: var(--green); }
.alpha { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0 16px; }
.example { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; font-family: 'Courier New', monospace; font-size: 14px; overflow-wrap: anywhere; }
details { border-bottom: 1px solid var(--border); padding: 10px 0; }
summary { cursor: pointer; color: #f0f0f0; font-weight: 600; }
.related { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.related a { display: inline-block; border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px; text-decoration: none; font-size: 14px; }
footer { margin-top: 56px; font-size: 13px; color: var(--muted); text-align: center; }
@media print {
  body { background: #fff; color: #000; }
  .top, .tool, .gift, footer, .related { display: none; }
  td code { color: #000; }
}