/* ============================================================
   Turn by Turn — teaching chess to a six-year-old
   House style: late-1930s pulp adventure print, in ink + cream
   ============================================================ */

:root {
  --ink: #11151c;
  --cream: #f1d7a2;
  --gold: #f2b705;
  --red: #a92d32;
  --blue: #214b78;
  --smoke: #59616b;
  --line: 4px solid var(--ink);
  --shadow: 6px 6px 0 var(--ink);
  --font-disp: "Arial Narrow", "Franklin Gothic Medium", "Arial Black", "Trebuchet MS", sans-serif;
  --font-body: Georgia, "Times New Roman", serif;
  --font-uta: "Courier New", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(circle at 25% 40%, rgba(17,21,28,0.05) 1px, transparent 1px),
                    radial-gradient(circle at 75% 70%, rgba(17,21,28,0.04) 1px, transparent 1px);
  background-size: 26px 26px, 34px 34px;
}

h1, h2, h3 { font-family: var(--font-disp); text-transform: uppercase; letter-spacing: 0.02em; }

h2 { font-size: clamp(32px, 4.6vw, 54px); line-height: 1.02; margin: 0 0 10px; }
h3 { font-size: 20px; letter-spacing: 0.05em; margin: 0 0 10px; }

p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }

a { color: inherit; }
a img, svg { vertical-align: middle; }

::selection { background: var(--gold); color: var(--ink); }

:focus-visible {
  outline: 4px solid var(--gold);
  outline-offset: 2px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--ink);
  color: var(--cream);
  padding: 10px 14px;
  z-index: 100;
}
.skip:focus { left: 8px; }

/* -------------------------------------------------- masthead */
.mast {
  background: var(--ink);
  color: var(--cream);
  border-bottom: 4px solid var(--gold);
}
.mast-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand {
  font-family: var(--font-disp);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}
.brand-mark { color: var(--gold); font-style: normal; letter-spacing: 0; }
.nav {
  display: flex;
  gap: 22px;
  font-family: var(--font-disp);
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}
.nav a { text-decoration: none; color: var(--cream); padding: 4px 2px; }
.nav a:hover { color: var(--gold); }

/* -------------------------------------------------- hero */
.hero {
  background: var(--ink);
  color: var(--cream);
  border-bottom: var(--line);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 88% 12%, rgba(242,183,5,0.16) 0 140px, transparent 141px),
    linear-gradient(rgba(241,215,162,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(241,215,162,0.06) 1px, transparent 1px);
  background-size: auto, 46px 46px, 46px 46px;
}
.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 64px 22px 74px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-copy { max-width: 560px; }
.kicker {
  font-family: var(--font-uta);
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 18px;
}
.hero h1 {
  font-size: clamp(46px, 8.5vw, 92px);
  line-height: 0.95;
  letter-spacing: 0.01em;
  margin: 0 0 24px;
  font-weight: 900;
}
.hero h1::selection { background: var(--gold); }
.lede {
  font-size: 20px;
  color: #e9d9b6;
  max-width: 46ch;
  margin: 0 0 30px;
}
.btn {
  display: inline-block;
  font-family: var(--font-disp);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 24px;
  border: var(--line);
  box-shadow: var(--shadow);
  margin: 0 12px 10px 0;
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
.btn-gold { background: var(--gold); color: var(--ink); }
.btn-ghost { background: transparent; color: var(--cream); box-shadow: 6px 6px 0 var(--blue); border-color: var(--cream); }
.btn-ghost:hover { box-shadow: 8px 8px 0 var(--blue); }

/* hero artwork -------------------------------------------------- */
.hero-board {
  position: relative;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.board-shape {
  width: min(100%, 470px);
  aspect-ratio: 10 / 12;
  background:
    linear-gradient(90deg, rgba(241,215,162,1) 0 12.5%, rgba(241,215,162,0) 12.5% 25%, rgba(241,215,162,1) 25% 37.5%, rgba(241,215,162,0) 37.5% 50%, rgba(241,215,162,1) 50% 62.5%, rgba(241,215,162,0) 62.5% 75%, rgba(241,215,162,1) 75% 87.5%, rgba(241,215,162,0) 87.5% 100%),
    linear-gradient(0deg, var(--blue) 0 100%);
  background-size: 101% 12.5%;
  border: var(--line);
  box-shadow: var(--shadow);
  transform: rotate(-2.5deg) scaleX(1.16);
  outline: 2px solid rgba(242,183,5,0.55);
  outline-offset: 3px;
}
.knight-shape {
  position: absolute;
  height: 92%;
  bottom: 5%;
  left: 6%;
  filter: drop-shadow(6px 9px 0 var(--blue));
  transition: transform 300ms ease;
}
.hero:hover .knight-shape { transform: translate(-3px, -3px); }
.knight-body { fill: var(--gold); }
.knight-shadow {
  fill: var(--blue);
  stroke: none;
}
.knight-body polygon, .knight-body circle { stroke: var(--ink); stroke-width: 1.4; }
.caption {
  position: absolute;
  bottom: -6px;
  right: 0;
  font-family: var(--font-uta);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--ink);
  border: 2px solid var(--gold);
  padding: 5px 10px;
}

/* -------------------------------------------------- band */
.band { padding: 22px 22px; }
.band-red { background: var(--red); color: var(--cream); }
.band-line {
  font-size: 19px;
  text-align: center;
  letter-spacing: 0.01em;
}
.band-line strong { color: var(--gold); }

/* -------------------------------------------------- sections */
.sec { max-width: 1180px; margin: 0 auto; padding: 70px 22px 30px; }
.sec-head { max-width: 780px; }
.sec-head p:not(.kicker) { color: var(--smoke); font-size: 19px; }

.sec-ink {
  background: var(--ink);
  color: var(--cream);
  max-width: none;
  padding: 70px 22px 80px;
}
.sec-ink .sec-head > * { width: min(100%, 760px); margin-left: auto; margin-right: auto; }
.sec-ink .sec-head .kicker { text-align: center; width: auto; }
.sec-ink .sec-head h2 { text-align: center; }
.sec-ink .sec-head p { text-align: center; color: #cbb98f; }
.light .kicker { color: var(--gold); }

/* cards -------------------------------------------------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 34px; }
.card {
  background: var(--cream);
  color: var(--ink);
  border: var(--line);
  box-shadow: var(--shadow);
  padding: 26px 24px;
  position: relative;
}
.card::before {
  content: "";
  position: absolute;
  top: -6px; left: -6px;
  width: 18px; height: 18px;
  background: var(--gold);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
}
.card p { font-size: 16.5px; color: #2a2f3a; }
.card h3 { color: var(--blue); }
.mini-note { font-family: var(--font-uta); font-size: 13.5px; color: var(--smoke); }

/* steps -------------------------------------------------- */
.steps {
  list-style: none;
  margin: 48px auto 0;
  padding: 0;
  max-width: 860px;
  counter-reset: none;
}
.step {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 26px;
  padding: 34px 0;
  border-top: 2px solid rgba(241,215,162,0.22);
}
.step:last-of-type { border-bottom: 2px solid rgba(241,215,162,0.22); }
.step-num {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.step-num span {
  font-family: var(--font-disp);
  font-size: 30px;
  font-weight: 900;
  color: var(--gold);
  -webkit-text-stroke: 1px var(--gold);
  -webkit-text-fill-color: var(--ink);
  display: block;
}
.ic { color: var(--gold); height: 66px; width: auto; filter: drop-shadow(4px 4px 0 var(--blue)); }
.step-body h3 { color: var(--gold); font-size: 24px; }
.step-body p { color: #ded5bb; font-size: 17px; }
.step-body strong { color: var(--cream); }
.progress-note {
  max-width: 640px;
  margin: 40px auto 0;
  background: var(--blue);
  border: var(--line);
  box-shadow: 6px 6px 0 var(--gold);
  padding: 18px 22px;
  color: var(--cream);
  font-size: 16.5px;
}
.progress-note strong { color: var(--gold); }

/* timeline -------------------------------------------------- */
.timeline {
  list-style: none;
  margin: 40px 0 30px;
  padding: 0;
}
.tl {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 26px;
  border-left: 4px solid var(--blue);
  margin: 0 0 26px 8px;
  padding-left: 26px;
}
.tl-time {
  font-family: var(--font-uta);
  font-size: 13px;
  color: var(--smoke);
  letter-spacing: 0.02em;
  /* match layout */ margin-top: 2px;
}
.tl-body h3 { color: var(--blue); font-size: 21px; }
.tl-body p { font-size: 17px; }

/* -------------------------------------------------- gear band */
.sec-band { border-top: 6px double var(--blue); }

/* -------------------------------------------------- faq */
.qa {
  border-bottom: 2px solid rgba(17,21,28,0.15);
  max-width: 860px;
}
.qa summary {
  font-family: var(--font-disp);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--blue);
  cursor: pointer;
  padding: 20px 16px 20px 0;
  list-style: none;
  position: relative;
  transition: color 120ms ease;
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
  content: "+";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-disp);
  font-size: 30px;
  color: var(--red);
}
.qa[open] summary::after { content: "–"; }
.qa summary:hover { color: var(--red); }
.qa-body { padding: 0 16px 20px 0; }
.qa-body p { color: #2a2f3a; font-size: 17px; }

/* -------------------------------------------------- footer */
.foot {
  background: var(--ink);
  color: var(--cream);
  border-top: var(--line);
  margin-top: 70px;
  padding: 40px 22px 36px;
  text-align: center;
}
.foot p { margin: 0 0 6px; }
.foot strong { font-family: var(--font-disp); letter-spacing: 0.06em; text-transform: uppercase; color: var(--gold); }
.foot-note { font-family: var(--font-uta); font-size: 13px; color: #a99a76; }

/* -------------------------------------------------- responsive */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding-top: 50px; }
  .hero-copy { max-width: none; }
  .hero-board { min-height: 340px; }
  .board-shape { width: min(92%, 430px); }
  .cards { grid-template-columns: 1fr 1fr; }
  .cards .card:last-child { grid-column: 1 / -1; }
  .nav { gap: 12px; }
}

@media (max-width: 720px) {
  .mast { position: sticky; top: 0; z-index: 50; }
  .mast-inner { flex-wrap: wrap; padding: 12px 16px; }
  .nav { order: 3; width: 100%; justify-content: space-between; gap: 6px; flex-wrap: wrap; }
  .nav a { padding: 6px 0; }
  .hero-inner { padding: 40px 16px 50px; }
  .hero-board { min-height: 300px; }
  .board-shape { width: min(96%, 360px); }
  .knight-shape { left: 0; height: 88%; }
  .caption { bottom: -2px; right: 0; }
  .sec { padding-top: 52px; }
  .cards { grid-template-columns: 1fr; }
  .cards .card:last-child { grid-column: auto; }
  .step { grid-template-columns: 1fr; gap: 14px; }
  .step-num { flex-direction: row; align-items: center; gap: 16px; }
  .step-num span { font-size: 26px; }
  .tl { grid-template-columns: 1fr; gap: 6px; margin-left: 4px; padding-left: 18px; }
  .tl-time { margin-bottom: 8px; }
  body { font-size: 17px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  .btn, .btn:hover, .btn:active, .knight-shape, .hero:hover .knight-shape { transform: none !important; box-shadow: var(--shadow); }
}