:root {
  --ink: #e7f2ea;
  --mute: #8fb59a;
  --field: #10241c;
  --field-2: #173128;
  --paper: #e7f0ea;
  --paper-2: #f3f7f4;
  --paper-ink: #163028;
  --fail: #a33b34;
  --pass: #1f6b45;
  --line: #2c4a3d;
  --face: Bahnschrift, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--field);
  color: var(--ink);
  font-family: var(--face);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.45;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
button { font: inherit; }

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px 32px;
  padding: 22px 48px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(16, 36, 28, 0.94);
  z-index: 2;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
  white-space: nowrap;
  text-decoration: none;
  font-size: 20px;
  letter-spacing: 0.01em;
}
.brand img { width: 44px; height: 44px; border-radius: 50%; }
.bar nav { display: flex; flex-wrap: wrap; gap: 12px 28px; font-size: 16px; }
.bar nav a { text-decoration: none; color: var(--mute); }
.bar nav a:hover { color: var(--ink); }

.sheet-head, .band, .paper, .board, .ledger, .prose {
  padding-left: 48px;
  padding-right: 48px;
}
.sheet-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding-top: 28px;
  padding-bottom: 22px;
  background: var(--field);
}
.sheet-head h1 {
  margin: 0;
  font-size: clamp(40px, 4.6vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
}
.sheet-head span {
  color: var(--mute);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.paper { background: var(--paper); color: var(--paper-ink); padding-top: 28px; padding-bottom: 8px; }
.band { background: var(--field); color: var(--ink); padding-top: 26px; padding-bottom: 26px; }
.label {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #5d7a6c;
}
.band .label { color: var(--mute); }
.lead {
  margin: 0;
  max-width: 1100px;
  font-size: clamp(26px, 2.4vw, 36px);
  line-height: 1.28;
  font-weight: 500;
}
.call-line {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin: 0;
  padding: 22px 48px 8px;
  background: var(--paper-2);
  color: var(--paper-ink);
}
.call-line b { font-size: 28px; letter-spacing: 0.08em; text-transform: lowercase; }
.call-line b.fail { color: var(--fail); }
.call-line b.pass { color: var(--pass); }
.aside-note {
  margin: 0;
  padding: 8px 48px 28px;
  background: var(--paper-2);
  color: #3d564a;
  font-size: 17px;
}

.grid3 {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1.2fr;
  gap: 28px 40px;
  padding: 28px 48px 48px;
  background: var(--paper);
  color: var(--paper-ink);
}
.grid3 p { margin: 0 0 8px; }
.grid3 .label { margin-bottom: 14px; }
.grid3 strong { display: block; font-size: 22px; font-weight: 600; margin-bottom: 8px; }
.grid3 em { font-style: normal; color: var(--fail); }

.sheet .sheet-head h2 {
  margin: 0;
  font-size: clamp(40px, 4.6vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
}

.set, .runs {
  padding: 56px 48px 48px;
}
.set { background: var(--paper); color: var(--paper-ink); }
.set h2, .runs h2 {
  margin: 0 0 8px;
  font-size: clamp(32px, 3vw, 46px);
  font-weight: 600;
  letter-spacing: -0.03em;
}
.set .sub { color: #4d675c; }
.groups {
  display: grid;
  grid-template-columns: 1.3fr 1.1fr 1fr;
  gap: 28px 48px;
}
.groups ol { margin: 0; padding: 0; list-style: none; counter-reset: row; }
.groups li {
  counter-increment: row;
  padding: 14px 0 14px 36px;
  border-top: 1px solid #d5e2da;
  position: relative;
  font-size: 18px;
}
.groups li::before {
  content: counter(row);
  position: absolute;
  left: 0;
  color: #5d7a6c;
  font-size: 13px;
  letter-spacing: 0.08em;
}
.set-foot { margin: 28px 0 0; font-size: 18px; max-width: 820px; }

.runs { background: var(--field); }
.runs .sub { color: var(--mute); }
.runs table td { color: var(--ink); border-bottom: 1px solid var(--line); background: transparent; }
.runs tr:nth-child(even) td { background: var(--field-2); }
.runs td.fail { color: #e7b2ae; }
.runs-foot { margin: 22px 0 0; font-size: 20px; }

.questions { margin-top: 48px; max-width: 860px; }
.questions h2 { margin-bottom: 8px; }
.prose dd { margin: 0 0 18px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }

.board {
  background: var(--field);
  padding-top: 56px;
  padding-bottom: 20px;
}
.board h2, .ledger h2, .prose h2 {
  margin: 0 0 8px;
  font-size: clamp(32px, 3vw, 46px);
  font-weight: 600;
  letter-spacing: -0.03em;
}
.sub { margin: 0 0 28px; color: var(--mute); max-width: 720px; }
.cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 64px;
}
.case {
  padding: 18px 0 8px;
  border-top: 1px solid var(--line);
}
.case h3 { margin: 0 0 10px; font-size: 26px; font-weight: 600; }
.pair { display: grid; grid-template-columns: 90px 1fr; gap: 8px 12px; color: var(--mute); font-size: 16px; }
.pair b { color: var(--ink); font-weight: 500; }
.held h3 { color: var(--mute); }
.board-foot {
  margin: 28px 0 0;
  padding-bottom: 36px;
  font-size: 20px;
}

.ledger { background: var(--paper); color: var(--paper-ink); padding-top: 56px; padding-bottom: 48px; }
.ledger h2 { color: var(--field); }
.ledger .sub { color: #4d675c; }
table { width: 100%; border-collapse: collapse; font-size: 18px; }
th {
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink);
  background: var(--field);
  padding: 16px 18px;
}
td { padding: 18px; border-bottom: 1px solid #d5e2da; }
tr:nth-child(even) td { background: var(--paper-2); }
td.fail { color: var(--fail); font-weight: 650; }
td.pass { color: var(--pass); font-weight: 650; }
.ledger p.end { margin: 22px 0 0; font-size: 20px; }

.prose { padding-top: 64px; padding-bottom: 48px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px 72px; }
.prose ol, .prose ul { margin: 0; padding: 0; list-style: none; }
.prose li { padding: 16px 0; border-top: 1px solid var(--line); font-size: 18px; }
.prose dt { margin-top: 18px; font-weight: 600; }
.prose dd { margin: 6px 0 0; color: var(--mute); }

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 48px 36px;
  border-top: 1px solid var(--line);
  color: var(--mute);
  font-size: 16px;
}
footer a { color: var(--mute); text-decoration: none; }
footer nav { display: flex; align-items: center; gap: 22px; }
.x {
  display: inline-flex;
  width: 28px;
  height: 28px;
  color: var(--ink);
}
.x svg { width: 28px; height: 28px; display: block; }
.x:hover { color: var(--paper); }

.legal-page { max-width: 820px; padding: 56px 48px 24px; }
.legal-page h1 { margin: 0 0 16px; font-size: 52px; letter-spacing: -0.03em; }
.legal-page h2 { margin: 32px 0 8px; font-size: 24px; }
.legal-page a { color: var(--paper); }

@media (max-width: 900px) {
  .bar, .sheet-head, .band, .paper, .board, .ledger, .prose, .grid3, .call-line, .aside-note, footer {
    padding-left: 20px;
    padding-right: 20px;
  }
  .bar { position: static; }
  .bar nav { width: 100%; gap: 10px 18px; }
  .runs, .ledger { overflow-x: auto; }
  .grid3, .cols, .split, .groups { grid-template-columns: 1fr; }
  .set, .runs { padding-left: 20px; padding-right: 20px; }
  .sheet-head { flex-direction: column; }
  table { font-size: 15px; }
  td, th { padding: 12px 10px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}