:root {
  --black: #0f0f0b;
  --tube: #e6e9cf;      /* fluorescent tube light */
  --wall: #c8b94a;      /* backrooms yellow */
  --orange: #e4721d;    /* sweater orange */
  --gold: #d9a521;      /* sweater gold */
  --ink: #17160f;
  --display: "Big Shoulders Display", Impact, sans-serif;
  --body: "Public Sans", system-ui, sans-serif;
  --mono: "Courier Prime", "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0; background: var(--tube); color: var(--ink);
  font-family: var(--body); font-size: 1.0625rem; line-height: 1.65;
}
a { color: inherit; }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }

.masthead {
  display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; align-items: baseline;
  padding: 1.1rem clamp(1rem, 4vw, 3rem);
  background: var(--black); color: var(--tube);
}
.inst { margin: 0; font: 900 1.4rem/1.1 var(--display); letter-spacing: .02em; }
.inst span { display: block; font: 400 .85rem/1.4 var(--body); color: var(--gold); letter-spacing: 0; }
.masthead nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.masthead nav a { text-decoration: none; border-bottom: 2px solid transparent; }
.masthead nav a:hover { border-bottom-color: var(--orange); }

.wrap { max-width: 68rem; margin: 0 auto; padding: 4.5rem clamp(1rem, 4vw, 3rem); }
.wrap.narrow { max-width: 46rem; }

h1, h2, h3 { font-family: var(--display); font-weight: 900; line-height: 1; margin: 0 0 1rem; text-transform: none; }
h2 { font-size: clamp(2rem, 5vw, 3rem); }

/* Hero */
.hero {
  display: grid; gap: 3rem; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: center;
  max-width: 76rem; margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 6rem) clamp(1rem, 4vw, 3rem);
}
.hero h1 { font-size: clamp(3.2rem, 10vw, 7rem); margin-bottom: 1.5rem; }
.lede { font-size: 1.2rem; max-width: 33rem; margin: 0 0 2rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 1rem; margin: 0; }

.btn {
  display: inline-block; cursor: pointer;
  font: 600 1rem/1 var(--body);
  padding: 1rem 1.5rem;
  background: var(--orange); color: var(--black);
  border: 2px solid var(--black); border-radius: 0;
  text-decoration: none;
}
.btn:hover { background: var(--black); color: var(--tube); }
.btn.ghost { background: transparent; }
.btn.ghost:hover { background: var(--black); color: var(--tube); }
.btn:disabled { background: transparent; opacity: .6; cursor: not-allowed; color: inherit; }

.terminal { margin: 0; background: var(--black); color: var(--gold); border: 2px solid var(--black); box-shadow: 10px 10px 0 var(--orange); }
.term-bar { font: .8rem/1 var(--mono); color: var(--tube); padding: .75rem 1rem; border-bottom: 1px solid rgba(230,233,207,.3); }
.terminal pre { margin: 0; padding: 1.25rem 1rem; min-height: 19rem; font: .95rem/1.65 var(--mono); white-space: pre-wrap; word-break: break-word; }

.band.yellow { background: var(--wall); }
.band.black { background: var(--black); color: var(--tube); }
.band.orange { background: var(--orange); }

.spec { margin: 2rem 0 0; }
.spec > div { display: grid; grid-template-columns: 10rem 1fr; gap: 1.5rem; padding: 1.1rem 0; border-top: 2px solid var(--black); }
.spec dt { font: 900 1.5rem/1.1 var(--display); }
.spec dd { margin: 0; max-width: 40rem; }

.sub { margin: 0 0 2.5rem; max-width: 36rem; }
.products { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fill, minmax(17rem, 21rem)); }
.folder { background: var(--tube); color: var(--ink); border: 2px solid var(--black); padding: 1.5rem; box-shadow: 6px 6px 0 var(--black); }
.band.black .folder { border-color: var(--gold); box-shadow: 6px 6px 0 var(--orange); }
.folder h3 { font-size: 1.8rem; }
.folder .note { margin: 0 0 1rem; }
.folder .price { font: 900 1.6rem/1 var(--display); margin: 0 0 1.25rem; }
.empty { opacity: .8; }

details { border-top: 2px solid var(--black); padding: 1rem 0; }
details:last-of-type { border-bottom: 2px solid var(--black); }
summary { cursor: pointer; font: 900 1.5rem/1.2 var(--display); }
details p { margin: .75rem 0 0; max-width: 38rem; }

.foot { padding: 2.5rem clamp(1rem, 4vw, 3rem); background: var(--black); color: var(--tube); font-size: .9rem; }
.foot p { margin: .25rem 0; }
.foot a { color: var(--gold); margin-right: 1rem; }

@media (max-width: 52rem) {
  .hero { grid-template-columns: 1fr; }
  .spec > div { grid-template-columns: 1fr; gap: .25rem; }
  .terminal { box-shadow: 6px 6px 0 var(--orange); }
}