:root {
  --black: #000;
  --ink: #e9f5e4;
  --dim: #8fa889;
  --phosphor: #89ff5a;
  --eye: #e6ff7a;
  --bsod: #050705;
  --bsod-ink: #f4f4ff;
  --chrome: #c0c0c0;
  /* dark terminal windows */
  --term: #0b0d0b;
  --term-bar: #151915;
  --term-line: #2c352a;
  --term-line-hi: #43513f;
  --term-ink: #d6e3d1;

  --display: "Big Shoulders Display", Impact, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --dos: "VT323", "IBM Plex Mono", monospace;
  --gutter: clamp(16px, 3vw, 36px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--black);
  color: var(--ink);
  font: 400 15px/1.6 var(--mono);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; }
:focus-visible { outline: 2px dashed var(--phosphor); outline-offset: 3px; }
::selection { background: var(--phosphor); color: #000; }

#field {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 18px var(--gutter);
  font-size: 13px;
  color: #fff;
  background: linear-gradient(#000 30%, rgba(0,0,0,0));
  padding-bottom: 34px;
}
.nav a { text-decoration: none; }
.nav a:hover { text-decoration: underline; }
.nav nav { display: flex; gap: 22px; flex-wrap: wrap; justify-content: flex-end; }

main, .foot { position: relative; z-index: 1; }

/* story panels over the fixed field */
.story { position: relative; }
.panel {
  min-height: 130vh;
  padding: 0 var(--gutter);
  display: grid;
  align-content: center;
  position: relative;
}
.mega {
  font: 900 clamp(84px, 17vw, 260px)/0.82 var(--display);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin: 0;
  color: #fff;
  mix-blend-mode: difference;
}
.lede {
  max-width: 34ch;
  margin: 28px 0 0;
  font-size: 15px;
  color: var(--ink);
  text-shadow: 0 0 12px #000, 0 0 4px #000;
}
.panel-hero { min-height: 100vh; align-content: end; padding-bottom: 9vh; }
.panel-hero .mega { font-size: clamp(88px, 17vw, 270px); text-align: center; }
.panel-hero .lede { justify-self: start; }
.scroll-hint {
  position: absolute; right: var(--gutter); bottom: 9vh; margin: 0;
  font-size: 13px; color: var(--dim);
}
.panel-left { justify-items: start; }
.panel-right { justify-items: end; text-align: right; }
.panel-right .lede { text-align: left; }
.panel-center { justify-items: center; text-align: center; min-height: 170vh; align-content: end; padding-bottom: 30vh; }
.panel-center .mega { font-size: clamp(64px, 11vw, 170px); }
.panel-center .lede { text-align: left; }

/* window chrome: dark, like a modern terminal */
.win {
  background: var(--term);
  color: var(--term-ink);
  border: 1px solid var(--term-line);
  border-radius: 8px;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.6), 0 18px 40px -12px rgba(0,0,0,0.85);
  overflow: hidden;
  font: 400 14px/1.5 var(--mono);
}
.win-bar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--term-bar);
  border-bottom: 1px solid var(--term-line);
  color: var(--dim);
  font: 500 12px/1 var(--mono);
  padding: 7px 8px 7px 12px;
  user-select: none;
}
[data-drag] .win-bar { cursor: grab; }
.dragging .win-bar { cursor: grabbing; }
.win-btns { display: flex; gap: 2px; }
.win-btns i {
  font-style: normal; width: 22px; height: 18px;
  display: grid; place-items: center;
  color: var(--dim); font-size: 12px; line-height: 1;
  border-radius: 4px;
}
.win-btns i:last-child { color: #ff6b5e; }
.win-body { padding: 14px 16px 16px; }
.win-body h3 { margin: 0 0 6px; font: 600 15px/1.3 var(--mono); color: #fff; }
.win-body p { margin: 0; }
.win-ghost { position: fixed; pointer-events: none; z-index: 40; margin: 0; }

/* how */
.how {
  min-height: 100vh;
  padding: 18vh var(--gutter) 16vh;
  position: relative;
}
.section-title {
  font: 900 clamp(48px, 8vw, 120px)/0.9 var(--display);
  text-transform: uppercase;
  margin: 0 0 56px;
  max-width: 10ch;
}
.cascade {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  counter-reset: step;
}
.cascade .win { position: relative; width: 100%; max-width: 330px; }
.cascade .win:nth-child(1) { margin-top: 0; }
.cascade .win:nth-child(2) { margin-top: 64px; margin-left: -24px; }
.cascade .win:nth-child(3) { margin-top: 128px; margin-left: -48px; }
.cascade .win:nth-child(4) { margin-top: 192px; margin-left: -72px; }
.cascade .win-body h3::before { counter-increment: step; content: counter(step) ". "; color: var(--phosphor); }
.hint { margin: 48px 0 0; color: var(--dim); font-size: 13px; }

/* BSOD */
.bsod {
  background: var(--bsod);
  border-block: 1px solid var(--term-line);
  color: var(--bsod-ink);
  font: 400 24px/1.25 var(--dos);
  padding: 14vh var(--gutter) 12vh;
  position: relative;
  z-index: 2;
}
.bsod-inner { max-width: 1180px; margin: 0 auto; }
.bsod-tag { text-align: center; margin: 0 0 28px; }
.bsod-tag > span { background: var(--phosphor); color: #000; padding: 0 6px; font-size: 26px; }
.bsod-title { font: 400 clamp(26px, 3.2vw, 40px)/1.15 var(--dos); margin: 0 0 40px; max-width: 46ch; }
.dump { margin: 0; display: grid; gap: 2px; max-width: 860px; }
.dump > div {
  display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: baseline;
}
.dump dt { overflow: hidden; white-space: nowrap; }
.dump dt::after { content: " ............................................................................................"; opacity: 0.55; }
.dump dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.dump .hot { font-size: clamp(30px, 4.2vw, 56px); line-height: 1.1; margin: 10px 0; }
.dump .hot dd { background: var(--bsod-ink); color: var(--bsod); padding: 0 8px; }
.dump dd.tick { animation: tick 0.6s steps(3) 1; }
@keyframes tick { 0% { background: var(--bsod-ink); color: var(--bsod); } 100% { background: transparent; } }
.bsod-note { margin: 18px 0 0; opacity: 0.8; font-size: 20px; }
.bsod-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; margin-top: 56px; align-items: start; }
.log { width: 100%; border-collapse: collapse; font-size: 13px; }
.log th { text-align: left; font-weight: 600; color: var(--dim); border-bottom: 1px solid var(--term-line-hi); padding: 4px 6px; }
.log td { padding: 4px 6px; border-bottom: 1px dotted var(--term-line); }
.log td:nth-child(2) { text-align: right; font-variant-numeric: tabular-nums; }
.log a { color: var(--phosphor); }
.win-log .win-body { max-height: 340px; overflow: auto; }
.win-canvas { padding: 0; background: var(--term); aspect-ratio: 4 / 5; }
.win-canvas canvas { width: 100%; height: 100%; display: block; }
.bsod-continue { text-align: center; margin: 64px 0 0; }
.blink { animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* buy */
.buy { padding: 20vh var(--gutter) 14vh; position: relative; }
.mega-tight { margin-bottom: 48px; }
.buy-steps {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px;
  max-width: 1100px;
  counter-reset: buy;
}
.buy-steps li { border: 1px solid var(--term-line-hi); border-radius: 8px; padding: 18px 20px 20px; background: var(--term); }
.buy-steps h3 { font: 600 17px/1.3 var(--mono); margin: 0 0 6px; color: #fff; }
.buy-steps h3::before { counter-increment: buy; content: counter(buy) ". "; color: var(--phosphor); }
.buy-steps p { margin: 0; color: var(--dim); max-width: 36ch; }


.ca {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  margin: 56px 0 0; padding: 14px 16px; max-width: 760px;
  background: var(--term); border: 1px solid var(--term-line-hi); border-radius: 8px;
}
.ca-label { color: var(--dim); font-size: 13px; }
.ca code { font: 500 14px/1.4 var(--mono); color: var(--phosphor); word-break: break-all; flex: 1 1 260px; }

.btn95 {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6ch;
  font: 600 14px/1 var(--mono);
  color: var(--term-ink); background: var(--term-bar); text-decoration: none;
  padding: 10px 16px; min-height: 40px;
  border: 1px solid var(--term-line-hi); border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.btn95:hover:not([disabled]):not([aria-disabled="true"]) { border-color: var(--phosphor); color: var(--phosphor); }
.btn95:active:not([disabled]) { transform: translateY(1px); }
.btn95[disabled], .btn95[aria-disabled="true"] { color: #5d6a59; border-color: var(--term-line); cursor: not-allowed; }
.btn95-big { font-size: 17px; padding: 14px 24px; }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 20px; }

.foot {
  display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  padding: 28px var(--gutter) 36px;
  font-size: 12px; color: var(--dim);
  border-top: 1px solid #1d261b;
  background: #000;
}
.foot p { margin: 0; max-width: 70ch; }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  z-index: 50; padding: 8px 14px;
  background: var(--term-bar); color: var(--term-ink); font: 600 13px/1.2 var(--mono);
  border: 1px solid var(--term-line-hi); border-radius: 6px;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.toast.show { opacity: 1; }

/* error cascade moment before the BSOD */
.err-stack { position: fixed; inset: 0; z-index: 30; pointer-events: none; }
.err-stack .win { position: absolute; width: min(340px, 80vw); }

@media (max-width: 900px) {
  .cascade { grid-template-columns: 1fr; gap: 16px; }
  .cascade .win:nth-child(n) { margin: 0; margin-left: calc((var(--i, 0)) * 14px); max-width: 420px; }
  .bsod-grid { grid-template-columns: 1fr; }
  .buy-steps { grid-template-columns: 1fr; }
  .bsod { font-size: 20px; }
}
@media (max-width: 560px) {
  body { font-size: 14px; }
  .nav { font-size: 12px; padding-top: 14px; }
  .nav nav { gap: 10px; }
  .nav nav a:nth-child(2) { display: none; }
  .panel { min-height: 110vh; }
  .panel-right { justify-items: start; text-align: left; }
  .panel-center { justify-items: start; text-align: left; }
  .scroll-hint { display: none; }
  .dump > div { grid-template-columns: 1fr; gap: 0; }
  .dump dt::after { content: ""; }
  .dump dd { text-align: left; }
  .dump > div + div { margin-top: 8px; }
}