:root {
  --bg: #060910;
  --bg-2: #0c1422;
  --panel: rgba(12, 20, 34, 0.92);
  --ink: #e7f2f6;
  --muted: #8ea3b5;
  --line: rgba(126, 176, 196, 0.28);
  --quark: #3ee0ff;
  --atom: #c4b5fd;
  --molecule: #d6ff6b;
  --danger: #ffb4a8;
  --ok: #b6f3c6;
  --sans: "Outfit", "IBM Plex Sans", "Helvetica Neue", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  background:
    radial-gradient(900px 420px at 10% -10%, rgba(62, 224, 255, 0.16), transparent 55%),
    radial-gradient(700px 380px at 100% 0%, rgba(196, 181, 253, 0.14), transparent 50%),
    linear-gradient(180deg, rgba(214, 255, 107, 0.05), transparent 28%),
    var(--bg);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(126, 176, 196, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 176, 196, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}
img { max-width: 100%; display: block; }
button, input, select, textarea {
  font: inherit;
  color: inherit;
  background: #081018;
  border: 1px solid var(--line);
  border-radius: 12px;
}
button { cursor: pointer; padding: 10px 16px; }
button:hover { border-color: var(--quark); }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--quark); outline-offset: 3px; }
h1, h2, h3 { font-weight: 560; letter-spacing: -0.03em; margin: 0; }
h1 { font-size: clamp(2.2rem, 5vw, 4.2rem); line-height: 0.95; }
h2 { font-size: 1.35rem; }
.kicker {
  margin: 0 0 10px;
  color: var(--quark);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.lede { max-width: 62ch; color: var(--muted); }

.top, .foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 22px;
}
.top {
  position: sticky;
  top: 0;
  backdrop-filter: blur(16px);
  background: rgba(6, 9, 16, 0.78);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 40px; height: 40px; }
.brand b { font-size: 1.05rem; letter-spacing: -0.03em; }
.brand small { display: block; color: var(--muted); font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
nav { display: flex; gap: 6px; flex-wrap: wrap; }
nav a {
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
}
nav a[aria-current="page"], nav a:hover { color: var(--ink); background: rgba(62, 224, 255, 0.1); }

main { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 36px 20px 80px; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
  margin: 16px 0;
}
.ladder { display: grid; grid-template-columns: 1.2fr 0.8fr 0.8fr; gap: 12px; margin: 28px 0; }
.matter {
  position: relative;
  overflow: hidden;
  min-height: 180px;
  padding: 18px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: #0a121c;
}
.matter strong { display: block; font-size: 1.6rem; letter-spacing: -0.04em; }
.matter span, .matter em { color: var(--muted); font-style: normal; }
.matter em { display: block; margin-top: 8px; font-family: var(--mono); font-size: 12px; }
.matter i {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px solid currentColor;
  opacity: 0.85;
}
.matter i::before, .matter i::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: currentColor;
}
.quark { color: var(--quark); }
.atom { color: var(--atom); }
.molecule { color: var(--molecule); }
.quark i::before { width: 7px; height: 7px; left: 8px; top: 30px; }
.quark i::after { width: 5px; height: 5px; right: 12px; top: 18px; }
.atom i::before { width: 10px; height: 10px; left: 31px; top: 31px; }
.atom i::after { width: 6px; height: 6px; right: 6px; top: 33px; }
.molecule i { border-radius: 18px; transform: rotate(18deg); }
.molecule i::before { width: 8px; height: 8px; left: 10px; top: 28px; }
.molecule i::after { width: 8px; height: 8px; right: 12px; top: 22px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat { background: #081018; border: 1px solid var(--line); border-radius: 16px; padding: 14px; }
.stat b { display: block; font-family: var(--mono); font-size: 1.25rem; letter-spacing: -0.04em; }
.stat span { color: var(--muted); font-size: 0.82rem; }
.bar { height: 8px; background: #081018; border-radius: 99px; overflow: hidden; margin: 16px 0; }
.bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--quark), var(--molecule)); }

label { display: block; margin: 12px 0 6px; color: var(--muted); font-size: 0.9rem; }
input, select, textarea { width: 100%; padding: 10px 12px; }
textarea { min-height: 180px; font-family: var(--mono); font-size: 12.5px; line-height: 1.45; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.row > * { flex: 1; min-width: 120px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.card { margin: 0; padding: 0; overflow: hidden; text-align: left; background: #081018; border-radius: 18px; }
.card img { aspect-ratio: 1; object-fit: cover; }
.card .meta { padding: 10px 12px 12px; }
.card small { display: block; color: var(--muted); }
.card.matter-quark { box-shadow: inset 0 0 0 1px rgba(62, 224, 255, 0.35); }
.card.matter-atom { box-shadow: inset 0 0 0 1px rgba(196, 181, 253, 0.4); }
.card.matter-molecule { box-shadow: inset 0 0 0 1px rgba(214, 255, 107, 0.4); }
table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 12.5px; }
th, td { border-bottom: 1px solid var(--line); text-align: left; padding: 8px 4px; vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
.num { word-break: break-all; }
#qr { width: 220px; height: 220px; background: #fff; border-radius: 16px; padding: 8px; }
.chip { margin: 4px 4px 0 0; border-color: rgba(62, 224, 255, 0.4); }
.pair { font-family: var(--mono); letter-spacing: 0.18em; }
[data-tone="bad"] { color: var(--danger); }
[data-tone="ok"] { color: var(--ok); }
.foot { color: var(--muted); border-top: 1px solid var(--line); font-family: var(--mono); font-size: 12px; }
.prose p, .prose li { max-width: 70ch; }
.prose h2 { margin-top: 28px; }
.tier-head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; margin-bottom: 8px; }
.tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; }
@media (max-width: 800px) {
  .stats, .grid, .ladder { grid-template-columns: 1fr 1fr; }
  .ladder { grid-template-columns: 1fr; }
  .top { align-items: flex-start; flex-direction: column; }
  h1 { font-size: 2.4rem; }
}
@media (prefers-reduced-motion: no-preference) {
  .matter i { animation: spin 18s linear infinite; }
}
@keyframes spin { to { transform: rotate(360deg); } }
.molecule i { animation: none; }