:root {
  --bg: #121416;
  --bg-2: #1a1d21;
  --bg-3: #22262b;
  --line: #31363c;
  --text: #ebe7de;
  --muted: #9c978c;
  --lcd: #c6e07a;
  --lcd-dim: #8aa355;
  --lcd-bg: #1c2412;
  --key: #ddd7cc;
  --key-ink: #2a2723;
  --led: #ff3b30;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --sans: "IBM Plex Sans", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --measure: 68ch;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(198, 224, 122, 0.08), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
}

a { color: var(--lcd); text-underline-offset: 0.18em; }
a:hover { color: #ddf0a4; }

img { max-width: 100%; height: auto; display: block; }

code, kbd, .mono { font-family: var(--mono); }

kbd, .key {
  display: inline-block;
  padding: 0.05em 0.45em 0.08em;
  border-radius: 4px;
  background: var(--key);
  color: var(--key-ink);
  font-family: var(--mono);
  font-size: 0.82em;
  font-weight: 500;
  letter-spacing: 0.02em;
  box-shadow: 0 1px 0 #b7b1a6, inset 0 1px 0 #fff;
  white-space: nowrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  background: rgba(18, 20, 22, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand:hover { color: var(--text); }

.led {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--led);
  box-shadow: 0 0 8px var(--led);
  flex: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  align-items: center;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
}

.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }

.wrap {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero { padding: 3.2rem 0 1.5rem; }

.lcd-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0 0 1rem;
  padding: 0.45rem 0.75rem;
  background: var(--lcd-bg);
  border: 1px solid #314018;
  border-radius: 6px;
  color: var(--lcd);
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

h1 {
  margin: 0 0 0.6rem;
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-weight: 600;
}

.lede {
  max-width: 42rem;
  margin: 0;
  color: #d4d0c6;
  font-size: 1.15rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

.btn {
  display: inline-block;
  padding: 0.65rem 0.95rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 560;
  border: 1px solid transparent;
}

.btn-lcd {
  background: var(--lcd);
  color: #1a220c;
}

.btn-lcd:hover { background: #d4ee8e; color: #1a220c; }

.btn-key {
  background: var(--key);
  color: var(--key-ink);
  box-shadow: 0 1px 0 #b7b1a6, inset 0 1px 0 #fff;
}

.btn-key:hover { color: var(--key-ink); background: #efeae1; }

.note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.shots {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding-bottom: 2rem;
}

.shot {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.shot figcaption {
  padding: 0.75rem 0.95rem 0.9rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.shot figcaption strong { color: var(--text); font-weight: 560; }

section { padding: 1.2rem 0 2rem; }

h2 {
  margin: 0 0 0.4rem;
  font-size: 1.7rem;
  letter-spacing: -0.03em;
  font-weight: 600;
}

h3 {
  margin: 1.6rem 0 0.4rem;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.section-kicker {
  margin: 0 0 0.35rem;
  color: var(--lcd-dim);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
  margin-top: 1rem;
}

.card {
  display: block;
  padding: 1rem 1.05rem 1.1rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: inherit;
  text-decoration: none;
}

a.card:hover { border-color: #4d5a32; }

.card h3 { margin: 0.2rem 0 0.35rem; }

.card p { margin: 0; color: #c9c4b8; }

.card .file {
  color: var(--lcd);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.panel {
  padding: 1rem 1.05rem 1.15rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.panel h2, .panel h3 { margin-top: 0; }

pre {
  margin: 0.8rem 0 0;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  background: #0d0f11;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--lcd);
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.55;
}

.paths { margin: 0.6rem 0 0; padding-left: 1.1rem; color: #d4d0c6; }
.paths li { margin: 0.25rem 0; }

.site-footer {
  margin-top: 1rem;
  padding: 1.4rem 0 2.2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p { margin: 0.35rem 0; }

.addr {
  display: block;
  margin-top: 0.25rem;
  word-break: break-all;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.layout {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  padding: 1.4rem 0 2.5rem;
}

.toc {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding-bottom: 0.2rem;
}

.toc a {
  flex: none;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.82rem;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-2);
}

.toc a:hover { color: var(--text); border-color: #4d5a32; }

.prose { max-width: 74ch; }
.prose h2 { margin-top: 2.1rem; }
.prose h2:first-child { margin-top: 0; }
.prose p { margin: 0.55rem 0; }
.prose ol, .prose ul { margin: 0.4rem 0 0.8rem; padding-left: 1.2rem; }
.prose li { margin: 0.28rem 0; }
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.7rem 0 1rem;
  font-size: 0.92rem;
}
.prose th, .prose td {
  text-align: left;
  vertical-align: top;
  padding: 0.45rem 0.55rem;
  border-bottom: 1px solid var(--line);
}
.prose th { color: var(--muted); font-weight: 500; font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase; }

.lcd-sample {
  margin: 0.8rem 0 1rem;
  padding: 0.7rem 0.85rem;
  width: fit-content;
  min-width: 16rem;
  background: var(--lcd-bg);
  border: 1px solid #314018;
  border-radius: 6px;
  color: var(--lcd);
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.45;
  white-space: pre;
}

.callout {
  margin: 0.9rem 0;
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--lcd-dim);
  background: var(--bg-2);
  color: #d4d0c6;
}

.product {
  display: grid;
  gap: 1.2rem;
  align-items: center;
  margin: 0.4rem 0 2.4rem;
}

.product .copy p { margin: 0.55rem 0; color: #d4d0c6; max-width: 42rem; }

.product ul { margin: 0.6rem 0 1rem; padding-left: 1.15rem; color: #d4d0c6; }
.product li { margin: 0.35rem 0; }
.product li strong { color: var(--text); font-weight: 560; }

.pick {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.pick .card h3 { margin-top: 0.15rem; }

.music {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.music a {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  background: var(--bg-2);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.92rem;
}

.music a:hover { border-color: #4d5a32; color: var(--lcd); }

@media (min-width: 800px) {
  .shots { grid-template-columns: 1fr 1fr; }
  .cards { grid-template-columns: 1fr 1fr 1fr; }
  .split { grid-template-columns: 1.1fr 0.9fr; }
  .product { grid-template-columns: 1.05fr 0.95fr; }
  .product.flip .copy { order: 2; }
  .pick { grid-template-columns: 1fr 1fr; }
  .layout { grid-template-columns: 200px 1fr; align-items: start; }
  .toc {
    position: sticky;
    top: 4.2rem;
    display: block;
    overflow: visible;
  }
  .toc a {
    display: block;
    border: 0;
    border-radius: 0;
    background: transparent;
    padding: 0.28rem 0;
  }
}