:root {
  --bg: #07263a;
  --bg-raised: #0c3249;
  --line: #1d4f6c;
  --text: #eef7fc;
  --muted: #b3d0e0;
  --blue: #1797d7;
  --blue-light: #8ccbec;
  --ink: #04202f;
  --radius: 10px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
}

a { color: var(--blue-light); }

:focus-visible { outline: 3px solid var(--blue-light); outline-offset: 2px; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--text); color: var(--ink); padding: 8px 12px; border-radius: 6px; z-index: 10; }
.skip:focus { left: 16px; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px;
}

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; text-decoration: none; }

.brand img { border-radius: 50%; }

nav { display: flex; align-items: center; gap: 20px; }
nav a { color: var(--text); text-decoration: none; font-size: 16px; }
nav a:hover { text-decoration: underline; }
.nav-cta { background: var(--blue); color: var(--ink); font-weight: 700; padding: 6px 14px; border-radius: 999px; }
.nav-cta:hover { background: var(--blue-light); text-decoration: none; }

.hero { position: relative; overflow: hidden; border-block: 1px solid var(--line); }

.facets { position: absolute; inset: 0; width: 100%; height: 100%; }
.f1 { fill: #0a3550; }
.f2 { fill: #0c3e5c; }
.f3 { fill: #0e4768; }
.f4 { fill: #093048; }
.f5 { fill: #115477; }
.f6 { fill: #0f4c6e; }
.f7 { fill: #14658f; }

.hero-text { position: relative; max-width: 1120px; margin: 0 auto; padding: 88px 24px 96px; }

.eyebrow { margin: 0 0 12px; color: var(--blue-light); font-weight: 600; }

h1 { max-width: 12em; margin: 0; font-size: clamp(2.6rem, 8vw, 5rem); line-height: 1.04; font-weight: 800; letter-spacing: -0.02em; }

.lede { max-width: 34em; margin: 24px 0 0; font-size: 1.15rem; color: var(--text); }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.btn {
  display: inline-block;
  padding: 11px 20px;
  border: 1px solid var(--blue-light);
  border-radius: var(--radius);
  background: rgba(7, 38, 58, 0.6);
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}
.btn:hover { background: var(--bg-raised); }
.btn.primary { background: var(--blue); border-color: var(--blue); color: var(--ink); font-weight: 700; }
.btn.primary:hover { background: var(--blue-light); border-color: var(--blue-light); }

.section { max-width: 1120px; margin: 0 auto; padding: 64px 24px 0; scroll-margin-top: 8px; }

h2 { margin: 0; font-size: 2rem; letter-spacing: -0.01em; }

.section-note { max-width: 44em; margin: 8px 0 28px; color: var(--muted); }

.games { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

.game {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.game h3 { margin: 0; font-size: 1.35rem; }

.facts { display: flex; flex-wrap: wrap; gap: 8px 32px; margin: 0; }
.facts dt { color: var(--muted); font-size: 0.85rem; }
.facts dd { margin: 0; font-weight: 600; }

.copy-row {
  display: grid;
  grid-template-columns: 5.2em minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 8px 8px 8px 12px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.copy-row + .copy-row { margin-top: -8px; }
.copy-label { color: var(--muted); font-size: 0.85rem; }
.copy-row code { font-family: var(--mono); font-size: 0.95rem; overflow-wrap: anywhere; }

.copy {
  min-width: 68px;
  padding: 6px 10px;
  border: 1px solid var(--blue-light);
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
}
.copy:hover { background: var(--line); }
.copy.done { background: var(--blue); border-color: var(--blue); color: var(--ink); }

.game ol { margin: 0; padding-left: 1.3em; }
.game li + li { margin-top: 4px; }

.note { margin: 0; color: var(--muted); font-size: 0.92rem; }

.help-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 32px; margin: 20px 0 28px; }
.help-grid h3 { margin: 12px 0 2px; font-size: 1.08rem; }
.help-grid p { margin: 0; color: var(--muted); }
.help-grid strong { color: var(--text); }

.foot { max-width: 1120px; margin: 64px auto 0; padding: 20px 24px 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.92rem; }
.foot p { margin: 0; }

@media (max-width: 760px) {
  .top { padding: 12px 16px; }
  nav { gap: 14px; }
  .hero-text { padding: 56px 16px 64px; }
  .section { padding: 48px 16px 0; }
  .games, .help-grid { grid-template-columns: minmax(0, 1fr); }
  .game { padding: 18px; }
  .copy-row { grid-template-columns: minmax(0, 1fr) auto; gap: 2px 10px; }
  .copy-label { grid-column: 1 / -1; }
  .copy-row code { font-size: 0.85rem; }
  .foot { padding: 20px 16px 28px; }
}

@media (max-width: 400px) {
  .brand span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}