:root {
  --bg: #08080a; --panel: #121217; --panel-2: #1b1c22; --line: rgba(255,255,255,.10);
  --text: #f4f4f7; --muted: #a3a3b2; --pink: #fe2857; --purple: #9b4df5; --blue: #087cfa; --orange: #fc801d; --lime: #21d789;
  --grad: linear-gradient(100deg, #fe2857, #fc801d 35%, #9b4df5 70%, #087cfa);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--sans); -webkit-font-smoothing: antialiased; min-height: 100vh; }
a { color: inherit; }
.wrap { max-width: 980px; margin: 0 auto; padding: 24px 20px 80px; position: relative; z-index: 2; }
.mono { font-family: var(--mono); }
.bg { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.blob { position: absolute; border-radius: 50%; filter: blur(100px); opacity: .35; }
.b1 { width: 460px; height: 460px; background: var(--pink); top: -160px; left: -120px; }
.b2 { width: 480px; height: 480px; background: var(--purple); top: 20%; right: -180px; }
.b3 { width: 380px; height: 380px; background: var(--blue); bottom: -160px; left: 30%; opacity: .25; }

.top { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(14px); background: rgba(8,8,10,.6); border-bottom: 1px solid var(--line); }
.top .in { max-width: 980px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 14px; }
.brand { font: 700 15px var(--mono); text-decoration: none; display: flex; align-items: center; gap: 10px; }
.logo { width: 30px; height: 30px; border-radius: 7px; background: var(--grad); display: grid; place-items: center; color: #000; font: 800 12px var(--mono); }
.sp { flex: 1; }
.who { color: var(--muted); font-size: 14px; }

h1 { font: 800 clamp(28px, 4vw, 40px)/1.1 var(--mono); letter-spacing: -.03em; margin: 8px 0 8px; }
h2 { font: 700 20px var(--mono); letter-spacing: -.02em; margin: 0 0 10px; }
.sub { color: var(--muted); margin: 0 0 22px; }
.gt { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 22px; border-radius: 999px; border: 0; cursor: pointer;
  font: 600 15px var(--sans); color: #000; background: #fff; text-decoration: none; transition: transform .15s, box-shadow .25s; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 28px rgba(155,77,245,.5); }
.btn:disabled { opacity: .55; cursor: default; transform: none; box-shadow: none; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn.ghost:hover { box-shadow: none; border-color: var(--purple); }
.btn.small { padding: 7px 14px; font-size: 14px; }
.btn.go { background: var(--lime); }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
.auth { max-width: 420px; margin: 40px auto 0; }
.field { display: block; margin: 0 0 14px; }
.field span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: rgba(255,255,255,.05); color: #fff; font: 16px var(--sans); }
.field input:focus, textarea:focus { outline: 2px solid var(--purple); outline-offset: 1px; }
.err { color: #ff8a9a; font-size: 14px; min-height: 1.3em; margin: 6px 0; }
.ok { color: var(--lime); }
.tabs { display: flex; gap: 6px; margin-bottom: 18px; }
.tabs button { flex: 1; padding: 9px; border-radius: 10px; border: 1px solid var(--line); background: transparent; color: var(--muted); font: 600 14px var(--sans); cursor: pointer; }
.tabs button.on { color: #fff; border-color: var(--purple); background: rgba(155,77,245,.15); }

.banner { border: 1px solid rgba(252,128,29,.5); background: rgba(252,128,29,.08); border-radius: 14px; padding: 12px 16px; margin: 0 0 18px; font-size: 14px; }
.gate { border: 1px solid var(--purple); background: linear-gradient(135deg, rgba(254,40,87,.12), rgba(155,77,245,.14)); border-radius: 20px; padding: 26px; margin: 0 0 24px; display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
.gate .price { font: 800 40px var(--mono); letter-spacing: -.04em; }
.gate .why { flex: 1 1 260px; color: var(--muted); }
.progress { height: 6px; background: rgba(255,255,255,.08); border-radius: 6px; overflow: hidden; margin: 6px 0 24px; }
.progress i { display: block; height: 100%; background: var(--grad); border-radius: 6px; transition: width .6s; }

.mod { margin: 0 0 14px; }
.mod h2 { display: flex; align-items: baseline; gap: 12px; }
.mod h2 small { font: 500 13px var(--mono); color: var(--muted); }
.row { display: flex; align-items: center; gap: 14px; padding: 12px 16px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); margin: 0 0 8px; text-decoration: none; }
.row .id { font: 700 13px var(--mono); color: var(--orange); min-width: 2.8em; }
.row .t { flex: 1; }
.row .tag { font: 600 12px var(--mono); color: var(--muted); }
.row.open { cursor: pointer; transition: border-color .2s, transform .2s; }
.row.open:hover { border-color: var(--purple); transform: translateX(3px); }
.row.locked { opacity: .5; }
.row.done .tag { color: var(--lime); }
.row.proj { border-style: dashed; }

.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 8px; }
.crumbs a { text-decoration: none; }
.video { border-radius: 16px; overflow: hidden; background: #000; border: 1px solid var(--line); margin: 14px 0 22px; aspect-ratio: 16/9; display: grid; place-items: center; }
.video video { width: 100%; height: 100%; display: block; }
.video .soon { color: var(--muted); font: 500 14px var(--mono); text-align: center; padding: 20px; }
.hw { margin-top: 8px; }
.hw .prompt { white-space: pre-wrap; margin: 0 0 12px; }
textarea.code { width: 100%; min-height: 240px; resize: vertical; padding: 14px 16px; border-radius: 14px; border: 1px solid var(--line); background: #1e1f22; color: #d4d6dc;
  font: 14.5px/1.65 var(--mono); tab-size: 2; white-space: pre; overflow: auto; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 12px 0; align-items: center; }
.out { background: #17181a; border: 1px solid var(--line); border-radius: 14px; padding: 12px 16px; margin: 10px 0; font: 14px/1.7 var(--mono); }
.out h3 { margin: 0 0 6px; font: 600 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.out .l { color: #7ee2a0; white-space: pre-wrap; }
.out .e { color: #ff8a9a; white-space: pre-wrap; }
.res { list-style: none; padding: 0; margin: 8px 0; }
.res li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.res li:last-child { border-bottom: 0; }
.res .p { color: var(--lime); font-weight: 700; margin-right: 8px; }
.res .f { color: #ff8a9a; font-weight: 700; margin-right: 8px; }
.res small { display: block; color: var(--muted); margin-left: 22px; font-family: var(--mono); }
.passed { border: 1px solid var(--lime); background: rgba(33,215,137,.1); border-radius: 14px; padding: 14px 16px; margin: 10px 0; }
.lockbox { text-align: center; padding: 40px 20px; }
.lockbox .big { font-size: 44px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.pill { font: 600 12px var(--mono); padding: 3px 9px; border-radius: 999px; border: 1px solid var(--line); }
.pill.paid { color: var(--lime); border-color: rgba(33,215,137,.5); }
@media (max-width: 640px) { .row { padding: 10px 12px; } .gate { padding: 18px; } table { font-size: 13px; } }