/* Klangbild website.
   Layout: a hi-fi front panel. Brushed-aluminium header with the wordmark and a frequency scale,
   then a calm single column; sections are separated by scale rules, specs set like a data sheet. */
:root {
  --bg: #eeeef1;
  --panel-hi: #f6f6f8;
  --panel-lo: #c9c9d0;
  --ink: #111114;
  --ink-soft: #55555e;
  --line: rgba(17, 17, 20, 0.14);
  --button: #111114;
  --button-ink: #f6f6f8;
  --brush: rgba(0, 0, 0, 0.035);
  --led: #2fbf5f;
  --font-display: "Inter", "SF Pro Display", -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "SF Pro Text", -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --wrap: 1120px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d0d10; --panel-hi: #2a2a30; --panel-lo: #121216; --ink: #f2f2f5; --ink-soft: #a3a3ad;
    --line: rgba(242, 242, 245, 0.14); --button: #f2f2f5; --button-ink: #111114;
    --brush: rgba(255, 255, 255, 0.03); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d0d10; --panel-hi: #2a2a30; --panel-lo: #121216; --ink: #f2f2f5; --ink-soft: #a3a3ad;
  --line: rgba(242, 242, 245, 0.14); --button: #f2f2f5; --button-ink: #111114;
  --brush: rgba(255, 255, 255, 0.03); color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 6px; }
.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: max(24px, env(safe-area-inset-left, 0px));
  padding-right: max(24px, env(safe-area-inset-right, 0px));
}
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; margin: 0; }
p { margin: 0; }
.label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* Header: brushed aluminium front panel */
.panel {
  background:
    repeating-linear-gradient(0deg, var(--brush) 0 1px, transparent 1px 3px),
    linear-gradient(135deg, var(--panel-hi), var(--panel-lo));
  border-bottom: 1px solid var(--line);
}
.panel > .wrap { padding-block: 28px 72px; display: grid; gap: 56px; }
.panel.compact > .wrap { padding-block: 28px 48px; gap: 36px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.topbar nav { display: flex; gap: 22px; font-size: 15px; flex-wrap: wrap; }
.topbar nav a { text-decoration: none; color: var(--ink-soft); }
.topbar nav a:hover, .topbar nav a[aria-current="page"] { color: var(--ink); }
.home { text-decoration: none; }
.led { display: inline-flex; align-items: center; gap: 10px; }
.led::before {
  content: ""; width: 9px; height: 9px; border-radius: 50%;
  background: var(--led); box-shadow: 0 0 10px var(--led);
}
.mini-mark { font-family: var(--font-display); font-weight: 600; font-size: 26px; letter-spacing: -0.04em; }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 56px; align-items: center; }
.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(56px, 9vw, 112px);
  letter-spacing: -0.045em;
  line-height: 0.95;
}
.scale { margin-top: 26px; max-width: 420px; }
.scale svg { display: block; width: 100%; height: 26px; color: var(--ink); }
.scale .ends { display: flex; justify-content: space-between; margin-top: 4px; }
.lede { margin-top: 28px; font-size: 21px; line-height: 1.45; max-width: 30ch; }
.actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; }
.button {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: 999px;
  background: var(--button); color: var(--button-ink);
  font-weight: 600; font-size: 16px; text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.button:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18); }
.link { font-weight: 500; text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 2px; }
.link:hover { border-bottom-color: var(--ink); }
.model { margin-top: 20px; }

.tv-frame {
  border-radius: 14px;
  padding: 10px;
  background: #121214;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.28), 0 2px 0 rgba(255, 255, 255, 0.08) inset;
}
.tv-frame img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 6px; }
.tv-stand { width: 22%; height: 10px; margin: 0 auto; background: linear-gradient(#2a2a2e, #141416); border-radius: 0 0 8px 8px; }

/* Sections */
section { padding-block: 88px; }
.rule { border: 0; height: 18px; margin: 0; background:
  linear-gradient(var(--line), var(--line)) top / 100% 1px no-repeat,
  repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 24px) top / 100% 7px no-repeat,
  repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 120px) top / 100% 14px no-repeat; }
.section-head { display: grid; gap: 14px; max-width: 640px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(32px, 4.4vw, 46px); letter-spacing: -0.03em; line-height: 1.08; }
.section-head p { color: var(--ink-soft); font-size: 19px; }

.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px 48px; }
.feature { display: grid; gap: 10px; align-content: start; }
.feature svg { width: 28px; height: 28px; color: var(--ink); }
.feature h3 { font-size: 20px; letter-spacing: -0.01em; }
.feature p { color: var(--ink-soft); font-size: 16px; }

.gallery { display: grid; gap: 28px; }
.gallery .row { display: grid; gap: 20px; }
.gallery .two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.gallery .three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gallery figure { margin: 0; display: grid; gap: 10px; align-content: start; }
.gallery img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 10px; box-shadow: 0 14px 36px rgba(0, 0, 0, 0.16); }
.gallery figcaption { color: var(--ink-soft); font-size: 15px; }

.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; counter-reset: step; }
.step { border-top: 2px solid var(--ink); padding-top: 18px; display: grid; gap: 8px; align-content: start; }
.step .label::after { counter-increment: step; content: " " counter(step, decimal-leading-zero); }
.step h3 { font-size: 20px; }
.step p { color: var(--ink-soft); font-size: 16px; }

.specs-wrap { overflow-x: auto; }
.specs { width: 100%; border-collapse: collapse; font-size: 16px; }
.specs th, .specs td { text-align: left; padding: 14px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.specs th { width: 34%; font-family: var(--font-mono); font-weight: 500; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); padding-right: 24px; }

/* Text pages (support, privacy) */
.page-title { font-size: clamp(40px, 6vw, 64px); letter-spacing: -0.035em; line-height: 1.02; }
.page-lede { margin-top: 16px; color: var(--ink-soft); font-size: 19px; max-width: 46ch; }
.prose { max-width: 68ch; display: grid; gap: 18px; }
.prose h2 { font-size: 26px; letter-spacing: -0.02em; margin-top: 28px; }
.prose p, .prose li { color: var(--ink); }
.prose ul, .prose ol { margin: 0; padding-left: 22px; display: grid; gap: 8px; }
.prose .muted { color: var(--ink-soft); }
.faq { display: grid; gap: 0; max-width: 76ch; }
.faq details { border-bottom: 1px solid var(--line); padding-block: 18px; }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-family: var(--font-display); font-weight: 600; font-size: 19px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--ink-soft); }
.faq details[open] summary::after { content: "–"; }
.faq .answer { margin-top: 12px; color: var(--ink-soft); display: grid; gap: 10px; }
.faq .answer ol, .faq .answer ul { margin: 0; padding-left: 22px; display: grid; gap: 6px; }
.contact-card { display: grid; gap: 8px; padding: 24px; border: 1px solid var(--line); border-radius: 14px; max-width: 520px; }
.contact-card code, .contact code { font-family: var(--font-mono); font-size: 15px; color: var(--ink); user-select: all; }

footer { border-top: 1px solid var(--line); }
footer .wrap { padding-block: 48px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: start; }
.footer-mark { font-family: var(--font-display); font-weight: 600; font-size: 28px; letter-spacing: -0.04em; }
.contact { display: grid; gap: 6px; margin-top: 14px; color: var(--ink-soft); font-size: 15px; }
.footer-links { display: grid; gap: 8px; font-size: 15px; justify-items: end; }
.footer-links a { text-decoration: none; color: var(--ink-soft); }
.footer-links a:hover { color: var(--ink); }
.fine { margin-top: 28px; grid-column: 1 / -1; font-size: 13px; color: var(--ink-soft); }

@media (max-width: 860px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps, .gallery .three { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .features, .gallery .two { grid-template-columns: minmax(0, 1fr); }
  .topbar nav { gap: 16px; }
  section { padding-block: 64px; }
  footer .wrap { grid-template-columns: minmax(0, 1fr); }
  .footer-links { justify-items: start; }
}
@media (prefers-reduced-motion: reduce) { .button { transition: none; } .button:hover { transform: none; } }