:root {
  color-scheme: dark;
  --bg: #0b0f14; --panel: #121922; --panel2: #0e141c; --line: #223040;
  --text: #d7e0ea; --dim: #8a9bad; --go: #5cf2a5; --warn: #ffc857; --bad: #ff6b6b; --blue: #7cd3ff;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif;
  padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom);
  background-image: radial-gradient(60rem 30rem at 50% -10rem, #16324033, transparent);
}
.top, .hero, main, footer { max-width: 52rem; margin: 0 auto; padding: 0 16px; }
.top { display: flex; justify-content: space-between; align-items: center; padding-top: 12px; }
.brand { display: flex; gap: .5rem; align-items: center; font: 600 .95rem var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.brand img { border-radius: 6px; }
.hero { padding-top: 2rem; }
.eyebrow { font: .78rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--go); margin: 0 0 .6rem; }
h1 { font-size: clamp(1.9rem, 7vw, 3.1rem); line-height: 1.08; margin: 0 0 .8rem; letter-spacing: -.02em; text-wrap: balance; }
.lede { color: var(--dim); max-width: 40rem; margin: 0 0 1.4rem; }
.lede em, p em { color: var(--text); font-style: italic; }

.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.tabs button {
  text-align: left; background: var(--panel2); border: 1px solid var(--line); border-radius: 12px;
  padding: .7rem .9rem; color: var(--dim); display: grid; gap: .1rem; min-height: 44px;
}
.tabs .num { font: .72rem var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.tabs .name { font-weight: 650; font-size: 1.1rem; color: var(--text); }
.tabs .sub { font-size: .8rem; }
.tabs button[aria-selected="true"] { border-color: var(--go); background: var(--panel); box-shadow: 0 0 0 1px var(--go) inset; }
.tabs button[aria-selected="true"] .num { color: var(--go); }

main { padding-top: 1.2rem; padding-bottom: 1rem; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 1.1rem 1.1rem 1.2rem; margin: 0 0 14px; }
.card h2 { font-size: 1.2rem; margin: 0 0 .6rem; display: flex; gap: .6rem; align-items: center; }
.step { display: inline-grid; place-items: center; width: 1.6rem; height: 1.6rem; border-radius: 50%; background: var(--go); color: #06150d; font: 700 .85rem var(--mono); flex: none; }
.card p { margin: 0 0 .9rem; }
.note { color: var(--dim); font-size: .88rem; }
.math { font-family: var(--mono); font-size: .95em; color: var(--warn); white-space: nowrap; }
code { font-family: var(--mono); font-size: .9em; background: #ffffff12; padding: .1em .35em; border-radius: 4px; }
pre { background: #070a0e; border: 1px solid var(--line); border-radius: 10px; padding: .8rem .9rem; overflow-x: auto; margin: .9rem 0; }
pre code { background: none; padding: 0; font-size: .82rem; line-height: 1.5; color: #b9f5d3; }

button, select, input { font: inherit; color: inherit; }
button { min-height: 44px; padding: .55rem 1rem; border-radius: 10px; border: 1px solid var(--line); background: var(--panel2); cursor: pointer; }
button:disabled { opacity: .5; cursor: default; }
button.primary { background: var(--go); border-color: var(--go); color: #06150d; font-weight: 650; }
button.ghost { background: transparent; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: .7rem 0; }
.row input { flex: 1 1 12rem; min-width: 0; }
input:not([type=range]), select { min-height: 44px; background: #070a0e; border: 1px solid var(--line); border-radius: 10px; padding: .5rem .7rem; max-width: 100%; }
.controls { display: grid; gap: .8rem; margin: 1rem 0 .4rem; }
@media (min-width: 640px) { .controls { grid-template-columns: 1fr 1.4fr; } }
.controls label { display: grid; gap: .3rem; font-size: .88rem; color: var(--dim); }
.controls output { color: var(--text); font-family: var(--mono); }
input[type=range] { width: 100%; accent-color: var(--go); min-height: 32px; }
select { width: 100%; }

.vault, .leak { background: #070a0e; border: 1px solid var(--line); border-radius: 12px; padding: 1rem; text-align: center; }
.vault[data-state="open"], .leak[data-state="open"] { border-color: var(--go); box-shadow: 0 0 24px #5cf2a533; }
.digits { display: flex; justify-content: center; gap: clamp(4px, 1.6vw, 10px); }
.digits span {
  font: 700 clamp(1.5rem, 8vw, 2.8rem) var(--mono); width: 1.25em; padding: .15em 0; border-radius: 8px;
  background: #0f1620; border: 1px solid var(--line); color: var(--bad);
}
.digits.small span { font-size: clamp(1.2rem, 6vw, 2rem); color: var(--dim); }
.digits span.ok, [data-state="open"] .digits span { color: var(--go); border-color: #2c6b4b; }
.digits span.cur { border-color: var(--warn); color: var(--warn); }
.bar { height: 4px; background: #16202c; border-radius: 2px; margin: .9rem 0 .6rem; overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--warn); }
[data-state="open"] .bar i { background: var(--go); }
.status { font: .85rem var(--mono); color: var(--dim); margin: 0; min-height: 1.3em; }
.vault .status, .leak .status { margin: 0; }
.shake { animation: shake .3s; }
@keyframes shake { 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
@media (prefers-reduced-motion: reduce) { .shake { animation: none; } }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: .8rem 0; }
.stats div { background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: .5rem .6rem; min-width: 0; }
.stats span { display: block; font-size: .7rem; color: var(--dim); text-transform: uppercase; letter-spacing: .06em; }
.stats b { font: 600 clamp(.85rem, 3.6vw, 1.1rem) var(--mono); overflow-wrap: anywhere; }

.scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font: .85rem var(--mono); }
th, td { text-align: right; padding: .4rem .5rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--dim); font-weight: 500; font-size: .75rem; }
th:first-child, td:first-child { text-align: left; }
tr.here td { color: var(--go); }
td.hot { color: var(--warn); }
.leakcol { display: none; }
body.leak-known .leakcol { display: table-cell; color: var(--blue); }

.bars { display: grid; grid-template-columns: repeat(10, 1fr); gap: 4px; height: 110px; align-items: end; margin: 1rem 0 .6rem; }
.bars div { display: grid; grid-template-rows: 1fr auto; height: 100%; align-items: end; font: .75rem var(--mono); color: var(--dim); }
.bars i { display: block; background: #2a3a4d; border-radius: 3px 3px 0 0; min-height: 2px; transition: height .25s; }
.bars .win i { background: var(--warn); }
.bars .win { color: var(--warn); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: .4rem 0 .7rem; }
.chips span { font: 600 1rem var(--mono); padding: .45rem .6rem; border-radius: 8px; background: #070a0e; border: 1px solid var(--line); min-width: 3.2rem; text-align: center; position: relative; }
.chips span[data-r]::after { content: attr(data-r); position: absolute; top: -9px; right: -4px; font-size: .65rem; background: var(--warn); color: #201400; border-radius: 6px; padding: 0 .3rem; }
.chips span[data-r] { border-color: var(--warn); }
.chips.hit span[data-r] { border-color: var(--go); color: var(--go); }

.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.opts button { flex: 1 1 8rem; }
.opts button.picked { border-color: var(--blue); box-shadow: 0 0 0 1px var(--blue) inset; }
.opts button.right { border-color: var(--go); color: var(--go); }
.opts button.wrong { border-color: var(--bad); color: var(--bad); }
.quiz { border-top: 1px solid var(--line); padding: .9rem 0; }
.quiz:first-of-type { border-top: 0; padding-top: 0; }
.quiz .why { margin: .7rem 0 0; color: var(--dim); font-size: .92rem; }
.next { margin: .4rem 0 0; }

.result { border-left: 3px solid var(--go); background: var(--panel2); border-radius: 0 10px 10px 0; padding: .8rem .9rem; margin-top: .9rem; }
.result p { margin: 0 0 .5rem; } .result p:last-child { margin: 0; }
.result .big { font: 700 clamp(1.3rem, 6vw, 1.9rem) var(--mono); color: var(--go); }
.result .verdict { color: var(--warn); }
figure { margin: 1rem 0 0; }
#chart { width: 100%; height: auto; background: #070a0e; border: 1px solid var(--line); border-radius: 10px; }
#chart text { font: 9px var(--mono); fill: var(--dim); }
figcaption { font-size: .82rem; color: var(--dim); margin-top: .4rem; }
.key::before { content: ""; display: inline-block; width: .7em; height: .7em; border-radius: 50%; margin: 0 .3em 0 .6em; }
.k1::before { background: var(--warn); } .k2::before { background: var(--go); }

footer { color: var(--dim); font-size: .82rem; padding-top: .4rem; padding-bottom: 2rem; }
dialog { max-width: min(28rem, 90vw); border-radius: 14px; border: 1px solid var(--line); background: var(--panel); color: var(--text); }
dialog::backdrop { background: #000a; }
[hidden] { display: none !important; }