:root {
  --bg: #0c0c24;
  --panel: #142e3a;
  --panel-alt: #102530;
  --header: #0a1f28;
  --score: #2a5468;
  --line: #1e4455;
  --paper: #f4edc3;
  --paper-dim: #c8d4b8;
  --blue: #6cb4d8;
  --sans: "Instrument Sans", "Segoe UI", sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(108, 180, 216, 0.08), transparent 55%),
    var(--bg);
  color: var(--paper);
  font-family: var(--sans);
  font-weight: 420;
  line-height: 1.5;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.top,
main,
footer {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.stage {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  color: var(--paper);
}

.stage video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(12, 12, 36, 0.72) 0%, rgba(12, 12, 36, 0.28) 52%, rgba(12, 12, 36, 0.18) 100%),
    linear-gradient(180deg, rgba(12, 12, 36, 0.55) 0%, rgba(12, 12, 36, 0.12) 34%, rgba(12, 12, 36, 0.78) 100%);
  pointer-events: none;
}

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--line);
}

.top.on-stage {
  position: relative;
  z-index: 2;
  width: min(1120px, calc(100% - 40px));
  border-bottom-color: rgba(244, 237, 195, 0.18);
}

.stage-copy {
  position: relative;
  z-index: 2;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 0 0 64px;
}

.stage-copy h1 {
  max-width: 14ch;
  text-shadow: 0 6px 28px rgba(12, 12, 36, 0.9);
}

.stage-copy .lede {
  max-width: 34rem;
  text-shadow: 0 2px 16px rgba(12, 12, 36, 0.9);
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 18px;
  background: var(--paper);
  color: var(--bg);
  border: 1px solid var(--paper);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.btn.ghost {
  background: transparent;
  color: var(--paper);
  border-color: rgba(244, 237, 195, 0.4);
}

@media (prefers-reduced-motion: reduce) {
  .stage video {
    display: none;
  }

  .stage {
    background: #0c0c24;
  }
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  font-family: var(--serif);
  font-size: 1.7rem;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.mark img {
  width: 36px;
  height: 36px;
}

.top-note {
  margin: 0;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  padding: 72px 0 40px;
}

.kicker {
  margin: 0 0 16px;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.3rem, 7vw, 5.6rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 0.92;
}

.lede {
  max-width: 38rem;
  margin: 28px 0 0;
  color: var(--paper-dim);
  font-size: 1.12rem;
}

.plate {
  margin: 0;
  padding: 18px 18px 8px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.plate figcaption {
  display: flex;
  justify-content: space-between;
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.plate svg {
  display: block;
  width: 100%;
  height: auto;
}

.plate line,
.plate path {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.5;
}

.plate .path {
  stroke: var(--paper);
  stroke-width: 2.25;
}

.plate .ticks line {
  stroke: var(--blue);
  stroke-dasharray: 3 4;
}

.plate circle {
  fill: var(--paper);
}

.plate text {
  fill: var(--paper-dim);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.checklist {
  padding: 28px 0 12px;
  border-top: 1px solid var(--line);
}

.checklist ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.checklist li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 28px 28px 28px 0;
}

.checklist li + li {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.checklist li > span {
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

h2 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1.85rem;
  font-weight: 400;
  letter-spacing: -0.03em;
}

.checklist p,
.section-head p {
  margin: 0;
  color: var(--paper-dim);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: end;
  margin-bottom: 18px;
}

.section-head p {
  max-width: 28rem;
  text-align: right;
}

.debrief,
.box {
  padding: 56px 0 8px;
}

.sheet {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.sheet-head,
.sheet-row {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 14px 18px;
}

.sheet-head {
  background: var(--header);
  color: var(--blue);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sheet-row:nth-child(even) {
  background: var(--panel-alt);
}

.sheet-row span:first-child {
  font-weight: 520;
}

.sheet-row span:not(:first-child) {
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
}

.sheet-row span:nth-child(2) {
  color: var(--paper);
}

.pages {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
  margin: 0;
  padding: 0;
}

.pages li {
  margin: 0;
  padding: 18px 8px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-align: center;
}

.pages .on {
  background: var(--score);
  color: var(--paper);
  border-color: var(--blue);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 64px;
  padding: 22px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

footer p {
  margin: 0;
}

footer a {
  color: var(--paper-dim);
}

.policy {
  max-width: 40rem;
  padding: 56px 0 8px;
}

.policy h1 {
  font-size: clamp(2.6rem, 5vw, 4rem);
}

.policy h2 {
  margin: 2rem 0 0.4rem;
  font-family: var(--serif);
  font-size: 1.7rem;
  font-weight: 400;
  letter-spacing: -0.03em;
}

.policy p,
.policy li {
  color: var(--paper-dim);
}

.policy ul {
  margin: 0.4rem 0 0;
  padding-left: 1.2rem;
}

.policy a {
  color: var(--paper);
}

@media (max-width: 860px) {
  .hero,
  .checklist ol,
  .pages {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 36px;
    padding-top: 48px;
  }

  .stage-copy {
    padding-bottom: 40px;
  }

  .stage-copy h1 {
    font-size: clamp(2.6rem, 12vw, 4.2rem);
  }

  .checklist li,
  .checklist li + li {
    padding: 22px 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .checklist li:first-child {
    border-top: 0;
    padding-top: 8px;
  }

  .section-head {
    display: block;
  }

  .section-head p {
    margin-top: 8px;
    text-align: left;
  }

  .pages {
    grid-template-columns: repeat(4, 1fr);
  }

  .sheet-head {
    display: none;
  }

  .sheet-row {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px 12px;
    padding: 16px;
  }

  .sheet-row span:first-child {
    grid-column: 1 / -1;
  }

  .sheet-row span:not(:first-child)::before {
    display: block;
    margin-bottom: 4px;
    color: var(--blue);
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .sheet-row span:nth-child(2)::before { content: "You"; }
  .sheet-row span:nth-child(3)::before { content: "Average"; }
  .sheet-row span:nth-child(4)::before { content: "Best"; }

  footer {
    display: block;
  }

  footer p + p {
    margin-top: 8px;
  }
}