:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1c232d;
  --border: #2a323d;
  --ink: #e6edf3;
  --muted: #9aa7b4;
  --accent: #b5179e;
  --accent-2: #7209b7;
  --danger: #ff5d5d;
  --good: #34d399;
  --warn: #fbbf24;
  --link: #6cb6ff;
  --radius: 14px;
  --maxw: 1080px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(10px);
  background: rgba(14,17,22,.82); border-bottom: 1px solid var(--border);
}
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 58px; }
.nav .brand { font-weight: 700; letter-spacing: .2px; color: var(--ink); }
.nav .brand b { color: var(--accent); }
.nav .links { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
.nav .links a { color: var(--muted); font-size: 14.5px; font-weight: 500; }
.nav .links a.active, .nav .links a:hover { color: var(--ink); text-decoration: none; }

/* hero */
.hero { padding: 64px 0 40px; border-bottom: 1px solid var(--border);
  background: radial-gradient(1100px 380px at 70% -10%, rgba(114,9,183,.22), transparent 60%); }
.hero .tag { display: inline-block; font-size: 12.5px; letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--accent); border: 1px solid var(--accent); border-radius: 999px; padding: 4px 12px; margin-bottom: 18px; }
.hero h1 { font-size: 40px; line-height: 1.12; margin: 0 0 14px; }
.hero p.lede { font-size: 18.5px; color: var(--muted); max-width: 760px; margin: 0 0 26px; }
.hero .venue { color: var(--muted); font-size: 14.5px; margin-top: 8px; }

/* buttons */
.btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; border-radius: 10px;
  font-weight: 600; font-size: 14.5px; border: 1px solid var(--border); background: var(--panel); color: var(--ink); cursor: pointer; }
.btn:hover { text-decoration: none; border-color: var(--accent); transform: translateY(-1px); transition: .15s; }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border: none; color: #fff; }
.btn.ghost { background: transparent; }

/* sections + cards */
section { padding: 46px 0; border-bottom: 1px solid var(--border); }
section h2 { font-size: 24px; margin: 0 0 6px; }
section .sub { color: var(--muted); margin: 0 0 26px; }
.grid { display: grid; gap: 16px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.card .ico { font-size: 22px; margin-bottom: 10px; display: block; }

/* stat */
.stat { text-align: center; }
.stat .n { font-size: 34px; font-weight: 800; color: var(--accent); line-height: 1; }
.stat .l { color: var(--muted); font-size: 13.5px; margin-top: 8px; }

/* tables */
.tablewrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th, td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); }
thead th { background: var(--panel-2); color: var(--muted); font-weight: 600; position: sticky; top: 0; }
tbody tr:hover { background: var(--panel-2); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.bar { height: 7px; border-radius: 4px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.barcell { min-width: 120px; }

/* pills/badges */
.pill { display: inline-block; font-size: 11.5px; font-weight: 600; padding: 2px 9px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--muted); margin: 2px 4px 2px 0; white-space: nowrap; }
.pill.O { color: #f59e0b; border-color: #f59e0b55; }
.pill.S { color: #60a5fa; border-color: #60a5fa55; }
.pill.II { color: #c084fc; border-color: #c084fc55; }
.pill.FA { color: #fb7185; border-color: #fb718555; }
.pill.SE { color: #34d399; border-color: #34d39955; }
.pill.dc { color: var(--danger); border-color: var(--danger); }
.pill.ec { color: var(--good); border-color: var(--good); }

/* prompts accordion */
.exp { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 14px; overflow: hidden; }
.exp > summary { cursor: pointer; padding: 16px 20px; font-weight: 600; list-style: none; display: flex; align-items: center; gap: 12px; }
.exp > summary::-webkit-details-marker { display: none; }
.exp > summary .count { margin-left: auto; color: var(--muted); font-weight: 500; font-size: 13px; }
.exp[open] > summary { border-bottom: 1px solid var(--border); background: var(--panel-2); }
.promptfile { padding: 14px 20px; border-bottom: 1px solid var(--border); }
.promptfile:last-child { border-bottom: none; }
.promptfile .head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.promptfile .head code { background: var(--panel-2); padding: 2px 8px; border-radius: 6px; font-size: 13px; }
.promptfile ol { margin: 6px 0 0; padding-left: 22px; color: var(--ink); }
.promptfile ol li { margin: 3px 0; color: var(--muted); font-size: 14px; }
.site-tag { text-transform: capitalize; font-weight: 600; color: var(--ink); }

/* misc */
.note { background: var(--panel-2); border-left: 3px solid var(--accent); padding: 12px 16px; border-radius: 8px; color: var(--muted); font-size: 14px; }
.foot { padding: 36px 0; color: var(--muted); font-size: 13.5px; text-align: center; }
.kbd { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--panel-2); padding: 1px 6px; border-radius: 5px; font-size: 13px; color: var(--ink); }
.controls { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.controls input, .controls select { background: var(--panel); border: 1px solid var(--border); color: var(--ink);
  padding: 9px 12px; border-radius: 9px; font-size: 14px; }
.controls input { flex: 1; min-width: 200px; }
.appframe { width: 100%; height: 640px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
@media (max-width: 820px) { .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr 1fr; } .hero h1 { font-size: 30px; } }
@media (max-width: 560px) { .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; } }