landing.css

:root {
  --bg: #0e0f12;
  --panel: #16181d;
  --panel-2: #1d2026;
  --line: #2a2e36;
  --line-2: #3a3f4a;
  --ink: #e7e9ee;
  --ink-dim: #9aa0ac;
  --ink-faint: #6a7080;
  --accent: #ffb000;
  --accent-2: #5dd2ff;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset,
            0 8px 24px rgba(0, 0, 0, 0.35);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--bg);
  color: var(--ink);
}
body {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 64px 28px;
}

header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 24px;
  margin-bottom: 32px;
  position: relative;
}
header .vendor {
  position: absolute;
  top: 0;
  right: 0;
  display: inline-flex;
  align-items: center;
  opacity: 0.85;
  transition: opacity 0.15s;
}
header .vendor:hover { opacity: 1; }
header .vendor img {
  height: 44px;
  width: auto;
  display: block;
  filter: invert(1);
}
h1 {
  font-family: 'IBM Plex Serif', serif;
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
h1 .tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  background: rgba(255, 176, 0, 0.12);
  padding: 3px 8px;
  margin-left: 10px;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  vertical-align: 6px;
}
.subtitle {
  color: var(--ink-dim);
  font-size: 15px;
}
.subtitle strong {
  color: var(--ink);
  font-weight: 600;
}
.subtitle a {
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(93, 210, 255, 0.3);
  transition: color 120ms, border-color 120ms;
}
.subtitle a:hover {
  color: var(--accent);
  border-bottom-color: rgba(255, 176, 0, 0.5);
}

.apps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-bottom: 32px;
}
.app {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 120ms, transform 120ms;
  box-shadow: var(--shadow);
}
.app:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.app h2 {
  font-family: 'IBM Plex Serif', serif;
  font-weight: 600;
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.app p {
  color: var(--ink-dim);
  font-size: 13px;
  line-height: 1.55;
}

.swatch-source {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 22px;
  box-shadow: var(--shadow);
  margin-bottom: 14px;
}
.swatch-source h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  font-weight: 500;
  margin-bottom: 8px;
}
.swatch-source p {
  font-size: 14px;
  color: var(--ink);
  margin-bottom: 14px;
}
.swatch-source p a {
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(93, 210, 255, 0.3);
}
.swatch-source p a:hover {
  color: var(--accent);
  border-bottom-color: rgba(255, 176, 0, 0.5);
}
.swatch-embed {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0;
  overflow: hidden;
  max-width: 640px;
  /* Container queries below switch aspect ratio based on rendered iframe
     width — wrapper is capped at 640px so its width tracks the iframe's. */
  container-type: inline-size;
}
.swatch-embed iframe {
  display: block;
  width: 100%;
  height: 190px;
  border: 0;
}
/* < 640px: Printables collapses its layout to a stacked view, square fits. */
@container (max-width: 639px) {
  .swatch-embed iframe {
    height: auto;
    aspect-ratio: 1 / 1;
  }
}
/* < 400px: Printables switches to a portrait card; match 400×445. */
@container (max-width: 399px) {
  .swatch-embed iframe {
    aspect-ratio: 400 / 445;
  }
}

.callout {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 22px;
  box-shadow: var(--shadow);
}
.callout h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  font-weight: 500;
  margin-bottom: 8px;
}
.callout p {
  font-size: 14px;
  color: var(--ink);
}
.callout code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--accent-2);
  padding: 1px 6px;
  border-radius: 3px;
}