/* STRING landing page: one dark page with the Digitakt screen's green. */
:root {
  --bg: #0d0f0c;
  --panel: #151913;
  --line: #262d22;
  --text: #d9e0d4;
  --muted: #8d9886;
  --lcd: #b8f34a;
  --lcd-dim: #6f9a2a;
  --warn: #f3c74a;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 var(--sans);
}

a { color: var(--lcd); text-underline-offset: 3px; }
a:hover { color: #d4ff7a; }

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ---- hero ---- */
.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(184, 243, 74, 0.10), transparent 60%),
    var(--bg);
  text-align: center;
}

.logo .px {
  width: 132px;
  height: auto;
  fill: var(--lcd);
  filter: drop-shadow(0 0 10px rgba(184, 243, 74, 0.45));
}

h1 {
  margin: 20px 0 8px;
  font: 700 clamp(48px, 12vw, 88px)/1 var(--mono);
  letter-spacing: 0.12em;
  color: var(--lcd);
  text-shadow: 0 0 18px rgba(184, 243, 74, 0.35);
}

.tagline {
  margin: 0 0 12px;
  font-size: 1.25rem;
  color: var(--text);
}

.sub {
  margin: 0 auto 28px;
  max-width: 560px;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.btn {
  display: inline-block;
  padding: 11px 20px;
  border: 1px solid var(--lcd-dim);
  border-radius: 6px;
  color: var(--lcd);
  font: 600 0.95rem var(--mono);
  text-decoration: none;
  letter-spacing: 0.04em;
}
.btn:hover { border-color: var(--lcd); }
.btn.primary { background: var(--lcd); color: #10140c; border-color: var(--lcd); }
.btn.primary:hover { background: #d4ff7a; color: #10140c; }

/* ---- sections ---- */
section { padding: 48px 0 8px; }

h2 {
  margin: 0 0 14px;
  font: 700 0.95rem var(--mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lcd);
}

h3 {
  margin: 28px 0 8px;
  font: 700 0.9rem var(--mono);
  letter-spacing: 0.12em;
  color: var(--lcd);
}

audio { width: 100%; margin-top: 4px; }

.screen { margin: 0; }
.screen img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

/* EXC icons, as on the Digitakt's screen */
.exc {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 20px 0 6px;
}
.exc > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 18px 8px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  font: 600 0.85rem var(--mono);
  color: var(--lcd);
}
.exc .px { width: 60px; height: 60px; fill: var(--lcd); }
.caption { margin: 0 0 20px; color: var(--muted); font-size: 0.9rem; text-align: center; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
th, td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
th { color: var(--muted); font-weight: 600; }
td:nth-child(1), td:nth-child(2) {
  font-family: var(--mono);
  color: var(--lcd);
  white-space: nowrap;
}

.features, .steps { padding-left: 1.2em; }
.features li, .steps li { margin: 8px 0; }

code {
  font: 0.9em var(--mono);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}

.warning {
  margin-top: 24px;
  padding: 12px 16px;
  border-left: 3px solid var(--warn);
  background: rgba(243, 199, 74, 0.07);
  color: var(--text);
}

footer {
  margin-top: 56px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  .hero { padding: 52px 0 40px; }
  .exc { grid-template-columns: repeat(2, 1fr); }
  td:nth-child(3) { min-width: 140px; }
}