/* ─── Tokens ─────────────────────────────────────────────── */
:root {
  --btc: #F7931A;          /* Bitcoin orange: brand, the engine */
  --amber: #B45309;        /* text-safe orange for links on white */
  --ink: #241505;          /* the app's warm text colour */
  --muted: #7A6048;
  --paper: #FFFFFF;
  --sand: #FFF4E5;         /* tinted surface, used sparingly */
  --line: #F1DFC6;
  --core: #2A1405;         /* orb core */
  --sans: 'Space Grotesk', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
  --wrap: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 18px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--amber); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--btc); outline-offset: 3px; border-radius: 8px;
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { left: 8px; }

/* ─── Nav ────────────────────────────────────────────────── */
.nav { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.92); position: sticky; top: 0; z-index: 5;
  backdrop-filter: saturate(1.4) blur(8px); -webkit-backdrop-filter: saturate(1.4) blur(8px); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 17px; }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--amber); }

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none; cursor: pointer;
  font: 700 16px/1 var(--sans); padding: 16px 22px; border-radius: 14px; border: 0;
}
.btn-play { background: var(--ink); color: #fff; }
.btn-play:hover { background: #3a2210; }
.btn-play svg { width: 18px; height: 18px; }
.btn-ghost { color: var(--ink); padding-left: 6px; padding-right: 6px; text-decoration: underline; text-decoration-color: var(--btc); text-decoration-thickness: 2px; }
.nav .btn { padding: 11px 16px; font-size: 14px; border-radius: 12px; }

/* ─── Hero ───────────────────────────────────────────────── */
.hero {
  background-image:
    linear-gradient(rgba(247,147,26,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247,147,26,.07) 1px, transparent 1px);
  background-size: 40px 40px;
  border-bottom: 1px solid var(--line);
}
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding-top: 72px; padding-bottom: 80px; }
.hero h1 { font-size: clamp(44px, 6.4vw, 78px); line-height: .98; letter-spacing: -.035em; margin: 0 0 24px; font-weight: 700; max-width: 11ch; }
.hero .lede { font-size: 20px; max-width: 34em; color: #3d2a17; margin: 0 0 30px; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.fineprint { margin-top: 22px; font-size: 14.5px; color: var(--muted); max-width: 36em; }

/* the mining engine: the one loud thing on the page */
.engine {
  justify-self: center; width: min(460px, 100%);
  background: var(--paper); border: 1px solid var(--line); border-radius: 32px; padding: 26px 26px 22px;
  box-shadow: 0 30px 80px -30px rgba(160, 80, 0, .35);
}
.engine-top { display: flex; justify-content: space-between; align-items: baseline; }
.engine-name { font-weight: 700; font-size: 15px; }
.engine-state { font: 700 13px/1 var(--mono); color: var(--amber); display: inline-flex; align-items: center; gap: 7px; }
.engine-state::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--btc); box-shadow: 0 0 0 4px rgba(247,147,26,.2); }
.engine.paused .engine-state { color: var(--muted); }
.engine.paused .engine-state::before { background: #C9B8A5; box-shadow: none; }

.orb-btn { display: block; margin: 18px auto 10px; width: 280px; max-width: 100%; aspect-ratio: 1; padding: 0; border: 0; background: none; cursor: pointer; position: relative; border-radius: 50%; }
.orb-btn svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.orb-spin { transform-origin: 50% 50%; animation: spin 9s linear infinite; }
.orb-spin.slow { animation-duration: 16s; animation-direction: reverse; }
.engine.paused .orb-spin { animation-play-state: paused; }
@keyframes spin { to { transform: rotate(360deg); } }
.orb-core {
  position: absolute; inset: 23%; border-radius: 50%;
  background: radial-gradient(circle at 38% 32%, #7A3A06 0%, var(--core) 58%, #160A02 100%);
  display: grid; place-content: center; text-align: center; color: var(--btc);
  box-shadow: 0 0 0 10px rgba(247,147,26,.08), 0 18px 40px rgba(90,40,0,.35);
}
.orb-core b { font: 700 54px/1 var(--sans); }
.orb-core span { font: 500 14px/1.4 var(--mono); color: #F8B65A; margin-top: 4px; }
.engine.paused .orb-core { filter: saturate(.55) brightness(.9); }

.readout { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: end; border-top: 1px solid var(--line); padding-top: 16px; }
.balance { font: 700 34px/1.1 var(--mono); letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.balance small { font: 700 15px var(--mono); color: var(--amber); margin-left: 6px; }
.timer { font: 700 20px/1.1 var(--mono); text-align: right; font-variant-numeric: tabular-nums; }
.readout .k { font-size: 13.5px; color: var(--muted); }
.readout .k.r { text-align: right; }
.engine-note { margin: 14px 0 0; font-size: 13.5px; color: var(--muted); text-align: center; }

/* ─── Sections ───────────────────────────────────────────── */
section { padding: 96px 0; }
h2 { font-size: clamp(32px, 4.2vw, 48px); line-height: 1.05; letter-spacing: -.03em; margin: 0 0 16px; max-width: 18ch; }
.intro { font-size: 19px; color: #3d2a17; max-width: 38em; margin: 0 0 52px; }

/* A day on the miner — a real sequence, so times are the markers */
.day { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.day li { display: grid; grid-template-columns: 150px 1fr 220px; gap: 40px; padding: 36px 0; border-bottom: 1px solid var(--line); align-items: start; }
.day time { font: 700 34px/1 var(--mono); letter-spacing: -.03em; color: var(--btc); font-variant-numeric: tabular-nums; }
.day time small { display: block; font: 500 13px/1.4 var(--mono); color: var(--muted); letter-spacing: 0; margin-top: 8px; }
.day h3 { font-size: 26px; line-height: 1.15; margin: 0 0 10px; letter-spacing: -.015em; }
.day p { margin: 0; max-width: 32em; color: #3d2a17; }
.day li.no-shot { grid-template-columns: 150px 1fr; }

.phone {
  width: 220px; border-radius: 30px; padding: 7px; background: var(--ink);
  box-shadow: 0 22px 50px -24px rgba(60, 25, 0, .55);
}
.phone img { width: 100%; height: auto; border-radius: 24px; aspect-ratio: 600 / 800; object-fit: cover; object-position: top; background: #fff; }
.ranks .phone img { aspect-ratio: 600 / 974; }

/* Ranks ladder */
.ranks { background: var(--sand); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.ranks .wrap { display: grid; grid-template-columns: 1fr 280px; gap: 64px; align-items: center; }
.ladder { list-style: none; padding: 0; margin: 36px 0 0; position: relative; }
.ladder::before { content: ''; position: absolute; left: 13px; top: 14px; bottom: 14px; width: 2px; background: linear-gradient(var(--btc), #E8C9A0); }
.ladder li { position: relative; display: grid; grid-template-columns: 28px 1fr auto; gap: 18px; align-items: center; padding: 12px 0; }
.ladder .dot { width: 28px; height: 28px; border-radius: 50%; background: var(--paper); border: 2px solid var(--btc); display: grid; place-items: center; font-size: 14px; z-index: 1; }
.ladder .name { font-weight: 700; font-size: 20px; }
.ladder .need { font: 500 16px var(--mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.ranks .phone { width: 280px; }

/* What BUSDT is / isn't */
.truth { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); border-radius: 24px; overflow: hidden; }
.truth > div { padding: 32px 34px; }
.truth > div + div { border-left: 1px solid var(--line); background: #FFFBF6; }
.truth h3 { margin: 0 0 14px; font-size: 22px; }
.truth ul { margin: 0; padding-left: 1.15em; }
.truth li { margin: 8px 0; color: #3d2a17; }

/* FAQ */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 22px 40px 22px 0; font-weight: 700; font-size: 20px; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  font: 500 26px/1 var(--mono); color: var(--btc); transition: transform .2s ease;
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { margin: 0 0 22px; color: #3d2a17; max-width: 40em; }

/* Final call */
.closing { padding: 0 0 96px; }
.closing .box {
  background: var(--ink); color: #fff; border-radius: 32px; padding: 56px 56px;
  display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center;
}
.closing h2 { color: #fff; margin: 0 0 10px; }
.closing p { margin: 0; color: #E8D6C2; max-width: 34em; }
.closing .btn-play { background: var(--btc); color: var(--ink); }
.closing .btn-play:hover { background: #FFA733; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 36px 0 48px; font-size: 15px; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 18px 32px; justify-content: space-between; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
footer nav a { color: var(--ink); }
footer p { margin: 0; }

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
  .hero .wrap { grid-template-columns: 1fr; padding-top: 48px; padding-bottom: 56px; gap: 40px; }
  .day li, .day li.no-shot { grid-template-columns: 1fr; gap: 14px; }
  .day .phone { width: 220px; margin-top: 10px; }
  .ranks .wrap { grid-template-columns: 1fr; gap: 40px; }
  .truth { grid-template-columns: 1fr; }
  .truth > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .closing .box { grid-template-columns: 1fr; padding: 40px 28px; }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  .wrap { padding: 0 16px; }
  .nav-links { display: none; }
  .nav .btn { margin-left: auto; }
  section { padding: 72px 0; }
  .hero .lede { font-size: 18px; }
  .engine { padding: 20px 18px 18px; border-radius: 26px; }
  .orb-btn { width: 230px; }
  .balance { font-size: 28px; }
  .day time { font-size: 28px; }
  .truth > div { padding: 24px 22px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .orb-spin { animation: none; }
}