/* Retention Open — shared styles. One centred column; split hero with a leaderboard; quiet sections divided by hairlines. */
:root {
  --bg: #f4f6f5;
  --surface: #ffffff;
  --ink: #101a17;
  --muted: #56645f;
  --line: #d9e0dd;
  --accent: #0b5d4b;
  --accent-ink: #ffffff;
  --flag: #f2c230;
  --flag-ink: #1d1700;
  --error: #b42318;
  --display: "Big Shoulders Display", "Arial Narrow", Impact, sans-serif;
  --body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1412; --surface: #141d1a; --ink: #e8eeeb; --muted: #9aa8a3; --line: #26332f;
    --accent: #3fbf9b; --accent-ink: #062019; --error: #ff8a80; color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.6 var(--body); }
img { max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding-inline: 20px; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Nav */
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 22px; }
.mark { font: 800 24px/1 var(--display); letter-spacing: .02em; text-transform: uppercase; text-decoration: none; display: flex; align-items: center; gap: 10px; }
.mark-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--flag); box-shadow: 0 0 0 3px var(--accent); }
.nav-links { display: flex; gap: 28px; font-size: 14px; color: var(--muted); }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--ink); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding-inline: 20px; border-radius: 999px; border: 0; font: 600 15px var(--body); cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn[disabled] { opacity: .6; cursor: progress; }
.nav .btn { height: 38px; font-size: 14px; }

/* Hero */
.hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; padding-block: 56px 72px; }
.hero > * { min-width: 0; }
.eyebrow { font: 500 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--flag); }
h1 { font: 800 clamp(52px, 8vw, 96px)/.9 var(--display); text-transform: uppercase; letter-spacing: -.005em; margin: 18px 0 22px; text-wrap: balance; }
h1 em { font-style: normal; color: var(--accent); }
.lede { font-size: 19px; color: var(--muted); max-width: 34ch; margin: 0 0 30px; }
.lede strong { color: var(--ink); font-weight: 600; }

/* Signup */
.signup { display: grid; gap: 12px; max-width: 460px; }
.signup-row { display: flex; gap: 8px; flex-wrap: wrap; }
.signup input[type="email"] { flex: 1 1 220px; min-width: 0; height: 44px; padding-inline: 18px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); font: 400 15px var(--body); }
.signup input[type="email"]::placeholder { color: var(--muted); }
.consent { display: grid; grid-template-columns: 18px 1fr; gap: 10px; font-size: 13px; color: var(--muted); line-height: 1.5; }
.consent input { width: 16px; height: 16px; margin: 2px 0 0; accent-color: var(--accent); }
.consent a { color: var(--ink); }
.form-note { font-size: 13px; color: var(--muted); margin: 0; min-height: 1.5em; }
.form-note.ok { color: var(--accent); font-weight: 600; }
.form-note.err { color: var(--error); }
.hp { position: absolute; left: -9999px; }

/* Leaderboard */
.board { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.board-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.board-title { font: 700 20px/1 var(--display); text-transform: uppercase; letter-spacing: .03em; }
.tag { font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 4px 8px; border-radius: 4px; background: var(--flag); color: var(--flag-ink); }
.board-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th { font: 500 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); text-align: left; padding: 12px 20px 8px; }
td { padding: 11px 20px; border-top: 1px solid var(--line); font-size: 15px; white-space: nowrap; }
td.num, th.num { text-align: right; font-family: var(--mono); }
td.rank { font: 500 14px var(--mono); color: var(--muted); width: 1%; }
.alias { font-weight: 600; }
.alias small { display: block; font: 400 12px var(--body); color: var(--muted); }
tr.lead td { background: color-mix(in srgb, var(--flag) 14%, transparent); }
tr.lead td.rank { color: var(--ink); }
.board-foot { padding: 12px 20px; font-size: 12px; color: var(--muted); border-top: 1px solid var(--line); }

/* Facts */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); }
.fact { padding: 26px 24px 26px 0; }
.fact + .fact { padding-left: 24px; border-left: 1px solid var(--line); }
.fact b { display: block; font: 800 40px/1 var(--display); text-transform: uppercase; }
.fact span { font-size: 14px; color: var(--muted); }

/* Sections */
section { padding-block: 88px 0; }
.sec-head { display: grid; grid-template-columns: 280px 1fr; gap: 40px; margin-bottom: 40px; }
.sec-head > * { min-width: 0; }
h2 { font: 800 clamp(36px, 5vw, 52px)/.95 var(--display); text-transform: uppercase; margin: 0; text-wrap: balance; }
.sec-head p { margin: 0; color: var(--muted); font-size: 17px; max-width: 58ch; align-self: end; }

.rounds { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.round { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 24px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.round-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.round-no { font: 800 44px/1 var(--display); color: var(--accent); }
.round-meta { font: 500 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); text-align: right; }
.round h3 { font: 700 22px/1.1 var(--display); text-transform: uppercase; letter-spacing: .02em; margin: 6px 0 0; }
.round p { margin: 0; font-size: 15px; color: var(--muted); }
.round.prize { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.round.prize .round-no, .round.prize p, .round.prize .round-meta { color: var(--accent-ink); }
.round.prize p { opacity: .85; }
.fine { font-size: 13px; color: var(--muted); margin: 16px 0 0; }

.traits { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.trait { display: grid; grid-template-columns: 160px 1fr; gap: 24px; padding: 24px 24px 24px 0; border-bottom: 1px solid var(--line); }
.trait:nth-child(even) { padding-left: 24px; border-left: 1px solid var(--line); }
.trait > * { min-width: 0; }
.trait h3 { font: 700 22px/1.1 var(--display); text-transform: uppercase; margin: 0; }
.trait h3 span { display: block; font: 500 11px var(--mono); letter-spacing: .08em; color: var(--muted); margin-top: 6px; }
.trait p { margin: 0; color: var(--muted); font-size: 15px; }

.blind { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.blind > * { min-width: 0; }
.blind ul { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; }
.blind li { display: grid; grid-template-columns: 22px 1fr; gap: 12px; color: var(--muted); }
.blind li::before { content: ""; width: 10px; height: 10px; margin-top: 8px; border-radius: 50%; border: 2px solid var(--accent); }
.blind li strong { color: var(--ink); font-weight: 600; }
.badge-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 28px; display: grid; gap: 18px; }
.badge-row { display: flex; justify-content: space-between; gap: 16px; font-size: 14px; border-bottom: 1px dashed var(--line); padding-bottom: 12px; }
.badge-row:last-child { border-bottom: 0; padding-bottom: 0; }
.badge-row span:first-child { color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding-top: 2px; }
.badge-row span:last-child { text-align: right; font-weight: 600; }
.redacted { display: inline-block; width: 120px; height: 12px; border-radius: 3px; background: var(--ink); vertical-align: middle; opacity: .85; }
.big-alias { font: 800 64px/.9 var(--display); text-transform: uppercase; color: var(--accent); }

.faq { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); padding-block: 20px; }
summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; font-weight: 600; font-size: 17px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font: 500 22px/1 var(--mono); color: var(--accent); }
details[open] summary::after { content: "\2212"; }
details p { margin: 12px 0 0; color: var(--muted); max-width: 68ch; }

.closer { margin-top: 96px; background: var(--accent); color: var(--accent-ink); border-radius: 18px; padding: 56px 48px; display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; }
.closer > * { min-width: 0; }
.closer h2 { color: var(--accent-ink); }
.closer p { margin: 12px 0 0; opacity: .85; }
.closer .btn { background: var(--flag); color: var(--flag-ink); }

footer { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 40px; font-size: 13px; color: var(--muted); }
footer nav { display: flex; gap: 20px; flex-wrap: wrap; }
footer .domain { font-family: var(--mono); }

/* Legal pages */
.legal { max-width: 720px; padding-block: 24px 40px; }
.legal h1 { font-size: clamp(44px, 7vw, 72px); margin-bottom: 8px; }
.legal .updated { font: 500 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin: 0 0 32px; }
.legal h2 { font-size: 28px; margin: 40px 0 12px; }
.legal p, .legal li { color: var(--muted); }
.legal strong { color: var(--ink); }
.legal ul { padding-left: 20px; display: grid; gap: 6px; }

@media (max-width: 900px) {
  .hero, .blind { grid-template-columns: 1fr; gap: 40px; }
  .rounds { grid-template-columns: 1fr 1fr; }
  .sec-head { grid-template-columns: 1fr; gap: 14px; }
  .nav-links { display: none; }
  .closer { grid-template-columns: 1fr; padding: 40px 28px; }
}
@media (max-width: 640px) {
  .facts { grid-template-columns: 1fr 1fr; }
  .fact, .fact + .fact { padding: 20px 12px 20px 0; border-left: 0; }
  .fact:nth-child(even) { padding-left: 16px; border-left: 1px solid var(--line); }
  .fact:nth-child(n+3) { border-top: 1px solid var(--line); }
  .fact b { font-size: 32px; }
  .rounds, .traits { grid-template-columns: 1fr; }
  .trait, .trait:nth-child(even) { grid-template-columns: 1fr; gap: 8px; padding-left: 0; border-left: 0; }
  .lede { font-size: 17px; }
  .big-alias { font-size: 52px; }
  section { padding-block: 64px 0; }
}
@media (prefers-reduced-motion: no-preference) {
  .board tbody tr { animation: rise .5s ease both; }
  .board tbody tr:nth-child(2) { animation-delay: .06s; }
  .board tbody tr:nth-child(3) { animation-delay: .12s; }
  .board tbody tr:nth-child(4) { animation-delay: .18s; }
  .board tbody tr:nth-child(5) { animation-delay: .24s; }
  @keyframes rise { from { transform: translateY(6px); } to { transform: none; } }
}