@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,350;14..32,400;14..32,500&display=swap');

@font-face {
  font-family: 'Paper Mono';
  src: url('fonts/PaperMono[wght].woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: oklch(14.24% 0.0036 17.58);
  --surface: oklch(24.87% 0.0766 257.85);
  --fg: oklch(93.37% 0.1506 127.45);
  --accent-secondary: oklch(97.04% 0.1345 107.30);
  --muted: var(--accent-secondary);
  --border: color-mix(in oklch, var(--accent-secondary) 30%, transparent);
  --accent: oklch(93.40% 0.0405 343.73);

  --font-display: 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'Paper Mono', ui-monospace, monospace;

  --fs-h1: clamp(40px, 6vw, 72px);
  --fs-h2: clamp(28px, 4vw, 48px);
  --fs-h3: clamp(18px, 2vw, 24px);
  --fs-body: 16px;
  --fs-sm: 14px;
  --fs-xs: 12px;

  --container: 1200px;
  --gutter: clamp(20px, 4vw, 48px);
  --section-gap: clamp(80px, 8vw, 100px);
  --radius-card: 20px;
  --radius-control: 8px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(86rem 54rem at -12% -18%, color-mix(in oklch, var(--surface) 72%, transparent), transparent 68%),
    radial-gradient(54rem 42rem at 102% 16%, color-mix(in oklch, var(--accent-secondary) 11%, transparent), transparent 70%),
    radial-gradient(68rem 46rem at 42% 112%, color-mix(in oklch, var(--surface) 56%, transparent), transparent 72%),
    var(--bg);
  background-attachment: fixed;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 350;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: url("assets/noise-texture.svg");
  opacity: 0.045;
  mix-blend-mode: overlay;
}
::selection { background: var(--fg); color: var(--bg); }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3 { margin: 0; font-weight: 400; line-height: 1.1; }
p { margin: 0; }

.container { width: min(100%, var(--container)); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-gap); }

.topnav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: color-mix(in oklch, var(--bg) 72%, transparent);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid color-mix(in oklch, var(--accent-secondary) 14%, transparent);
  transition: background 0.3s, border-color 0.3s;
}
.topnav.scrolled {
  background: color-mix(in oklch, var(--bg) 90%, transparent);
  border-bottom-color: color-mix(in oklch, var(--accent-secondary) 26%, transparent);
}
.topnav-inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.topnav nav {
  display: flex;
  gap: 34px;
}
.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  min-height: 44px;
  padding: 8px 12px;
}
.topnav nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--fg);
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s;
}
.topnav nav a .idx {
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.topnav nav a:hover {
  border-bottom-color: color-mix(in oklch, var(--accent-secondary) 55%, transparent);
}
.nav-cta {
  position: relative;
  padding: 11px 22px;
  background: transparent;
  border: none;
  color: var(--fg);
  font-size: 13.5px;
  font-weight: 400;
  isolation: isolate;
  transition: color 200ms ease;
}
.nav-cta::before {
  content: "";
  position: absolute;
  left: -10px; right: -10px; top: -6px; bottom: -6px;
  z-index: -1;
  background: radial-gradient(60% 100% at 50% 50%,
    color-mix(in oklch, var(--accent) 18%, transparent) 0%,
    transparent 70%);
  opacity: 0.5;
  filter: blur(6px);
  transition: opacity 240ms ease, filter 240ms ease;
}
.nav-cta:hover { color: var(--accent); }
.nav-cta:hover::before { opacity: 1; filter: blur(10px); }

.hero {
  --hero-ink: oklch(97% 0.02 110);
  min-height: 100svh;
  display: grid;
  align-items: end;
  padding: 140px 0 80px;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: url("assets/banner.jpg") center / cover no-repeat;
  background-color: #c0db77;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: rgb(3 10 20 / 0.22);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: end;
  position: relative;
  z-index: 1;
}
.hero-copy { max-width: min(520px, 42vw); color: var(--hero-ink); }
.eyebrow {
  margin-bottom: 16px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero h1 {
  font-size: var(--fs-h1);
  letter-spacing: -0.03em;
  color: var(--hero-ink);
  text-shadow: 0 2px 16px rgb(3 10 20 / 0.72), 0 1px 1px rgb(3 10 20 / 0.9);
}
.hero .lead {
  margin-top: 24px;
  max-width: 44ch;
  color: color-mix(in oklch, var(--hero-ink) 80%, transparent);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.7;
}
.hero-cta {
  margin-top: 32px;
}
.hero .btn-primary { color: var(--hero-ink); }
.hero .btn-primary .arrow { color: var(--hero-ink); }
.hero .btn-primary:hover,
.hero .btn-primary:hover .arrow { color: var(--hero-ink); }
.btn-primary {
  --btn-pad-y: 16px;
  --btn-pad-x: 22px;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  background: transparent;
  border: none;
  color: var(--fg);
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: 350;
  letter-spacing: -0.015em;
  line-height: 1;
  cursor: pointer;
  isolation: isolate;
  transition: color 200ms ease, transform 160ms ease;
}
.btn-primary::before {
  content: "";
  position: absolute;
  left: -18px;
  right: -18px;
  top: -14px;
  bottom: -14px;
  z-index: -1;
  background:
    radial-gradient(60% 100% at 50% 50%,
      color-mix(in oklch, var(--accent) 22%, transparent) 0%,
      color-mix(in oklch, var(--accent) 10%, transparent) 45%,
      transparent 78%);
  opacity: 0.55;
  filter: blur(8px);
  transition: opacity 280ms ease, filter 280ms ease;
  pointer-events: none;
}
.btn-primary::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 6px;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    color-mix(in oklch, var(--accent) 60%, transparent) 50%,
    transparent 100%);
  transition: opacity 200ms ease, transform 200ms ease;
}
.btn-primary .arrow {
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  font-weight: 400;
  letter-spacing: 0;
  display: inline-block;
  color: var(--accent);
  transition: transform 220ms ease, color 200ms ease;
}
.btn-primary:hover {
  color: color-mix(in oklch, var(--fg) 70%, var(--accent));
}
.btn-primary:hover::before {
  opacity: 1;
  filter: blur(12px);
}
.btn-primary:hover::after {
  background: linear-gradient(90deg,
    transparent 0%,
    var(--accent) 50%,
    transparent 100%);
}
.btn-primary:hover .arrow {
  transform: translateX(4px);
  color: var(--accent);
}
.btn-primary:active { transform: translateY(1px); }
.btn-primary:focus-visible {
  outline: none;
}
.btn-primary:focus-visible::after {
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  height: 2px;
}
@media (max-width: 640px) {
  .btn-primary { --btn-pad-y: 14px; --btn-pad-x: 18px; font-size: var(--fs-body); }
}
.hero-visual {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.hero-visual img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.brand-intro {
  border-top: 1px solid var(--border);
}
.brand-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
}
.brand-intro h2 {
  font-size: var(--fs-h2);
  letter-spacing: -0.02em;
}
.brand-intro-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.brand-intro-content p {
  max-width: 58ch;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.7;
}
.brand-intro-content blockquote {
  margin: 0;
  padding-left: 20px;
  border-left: 2px solid color-mix(in oklch, var(--accent-secondary) 55%, transparent);
  font-size: var(--fs-h3);
  line-height: 1.4;
}

.products {
  border-top: 1px solid var(--border);
}
.products-header {
  max-width: 600px;
  margin-bottom: 48px;
}
.products-header h2 {
  font-size: var(--fs-h2);
  letter-spacing: -0.02em;
}
.products-header p {
  margin-top: 16px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}
.products-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 20px;
}
.product-card {
  display: flex;
  flex-direction: column;
  padding: 14px;
  background:
    radial-gradient(120% 80% at 50% -20%, color-mix(in oklch, var(--accent-secondary) 6%, transparent), transparent 60%),
    color-mix(in oklch, var(--surface) 52%, transparent);
  border: 1px solid color-mix(in oklch, var(--accent-secondary) 38%, transparent);
  border-radius: 6px;
  box-shadow: inset 0 1px 0 color-mix(in oklch, var(--accent-secondary) 18%, transparent);
  text-align: left;
  overflow: hidden;
  color: inherit;
  position: relative;
  transition: border-color 0.2s, background 0.2s;
}
.product-card:hover {
  border-color: color-mix(in oklch, var(--accent-secondary) 55%, transparent);
}
.product-card[aria-pressed="true"] {
  border-color: color-mix(in oklch, var(--accent) 55%, transparent);
}
.product-card-visual {
  position: relative;
  display: block;
  aspect-ratio: 4/3;
  padding: 0;
  background: transparent;
  box-shadow: none;
  border-bottom: 0;
  overflow: hidden;
  border-radius: 0;
}
.product-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-card-visual svg { width: 100%; max-width: none; height: 100%; }
.product-card[data-od-id="product-phone"] .product-card-visual {
  aspect-ratio: 1/1;
  padding: 0;
}
.product-card[data-od-id="product-phone"] .product-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.product-card[data-od-id="product-glasses"] .product-card-visual {
  aspect-ratio: 1/1;
  padding: 0;
  background: transparent;
  box-shadow: none;
  border-bottom: 0;
}
.product-card[data-od-id="product-glasses"] .product-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.product-card[data-od-id="product-glasses"] {
  grid-row: span 2;
}
.product-card[data-od-id="product-glasses"] .product-card-body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
}
.product-card-primary-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid color-mix(in oklch, var(--accent-secondary) 20%, transparent);
}
.product-card-primary-meta span {
  display: grid;
  gap: 3px;
}
.product-card-primary-meta strong {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 400;
  letter-spacing: 0.08em;
}
.product-card-primary-meta small {
  color: var(--muted);
  font-size: var(--fs-xs);
  line-height: 1.4;
}
.product-card[data-od-id="product-wristband"] .product-card-visual {
  aspect-ratio: 1/1;
  padding: 0;
}
.product-card[data-od-id="product-wristband"] .product-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-card[data-od-id="product-match"] {
  grid-column: 2 / -1;
  flex-direction: row;
  align-items: center;
  gap: 20px;
  aspect-ratio: 3 / 1;
}
.product-card[data-od-id="product-match"] .product-card-visual {
  flex: 0 0 38%;
  align-self: stretch;
  aspect-ratio: auto;
}
.product-card[data-od-id="product-match"] .product-card-visual img {
  object-fit: cover;
  transform: scale(1.28);
}
.product-card[data-od-id="product-match"] .product-card-body {
  flex: 1 1 0;
  padding: 4px;
}
.product-card-body {
  display: block;
  flex: 0 0 auto;
  padding: 14px 4px 4px;
}
.product-card-body h3 { margin-top: 0; }
.product-card-body p { margin: 2px 0 0; }
.product-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2px;
}
.product-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--muted);
}
.product-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.product-status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.product-status.active { color: var(--fg); }
.product-status.active .dot {
  background: var(--fg);
  animation: dot-pulse 2.4s ease-in-out infinite;
}
.product-status.soon .dot {
  border: 1px solid color-mix(in oklch, var(--accent-secondary) 60%, transparent);
}
@keyframes dot-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.visual-placeholder-note {
  position: absolute;
  bottom: 18px;
  left: 0;
  right: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in oklch, var(--accent-secondary) 72%, transparent);
}
.product-card h3 {
  font-size: var(--fs-h3);
  margin-bottom: 8px;
}
.product-card p {
  color: var(--muted);
  font-size: var(--fs-sm);
}

.product-detail {
  border-top: 1px solid var(--border);
}
.product-detail .eyebrow {
  text-transform: none;
}
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.product-detail h2 {
  font-size: var(--fs-h2);
  letter-spacing: -0.02em;
}
.product-detail .lead {
  margin-top: 20px;
  max-width: 50ch;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.7;
}
.feature-list {
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
  border-top: 1px solid var(--border);
}
.feature-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  font-size: var(--fs-sm);
}
.feature-list .num {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
}
.product-visual {
  position: relative;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in oklch, var(--accent-secondary) 38%, transparent);
  border-radius: 6px;
  background:
    radial-gradient(120% 80% at 50% -20%, color-mix(in oklch, var(--accent-secondary) 6%, transparent), transparent 60%),
    color-mix(in oklch, var(--surface) 52%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 color-mix(in oklch, var(--accent-secondary) 18%, transparent);
  overflow: hidden;
  aspect-ratio: 1/1;
}
.product-visual-track {
  position: relative;
}
.product-visual-stack {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.product-visual-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(var(--image-scale, 1));
  transform-origin: var(--image-position, center);
  transition: opacity 0.55s ease;
}
.product-visual-frame.is-active { opacity: 1; }
.product-visual.is-contain .product-visual-frame { object-fit: contain; }
.product-visual-progress {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}
.product-visual-progress span {
  width: 18px;
  height: 2px;
  background: color-mix(in oklch, var(--accent-secondary) 22%, transparent);
  transition: background 0.3s;
}
.product-visual-progress span.is-active {
  background: var(--accent-secondary);
}
.product-visual-progress[hidden] { display: none; }
.detail-svg { display: none; }

@media (min-width: 921px) {
  .product-visual-track.has-scroll-sequence {
    min-height: calc(var(--frame-count) * 80vh);
  }
  .product-detail-grid.has-scroll-sequence .product-detail-copy,
  .product-visual-track.has-scroll-sequence .product-visual {
    position: sticky;
    top: clamp(76px, 12vh, 128px);
  }
}

.request {
  border-top: 1px solid var(--border);
}
.request-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 60px;
  align-items: start;
}
.request-info h2 {
  font-size: var(--fs-h2);
  letter-spacing: -0.02em;
}
.request-info .lead {
  margin-top: 16px;
  max-width: 50ch;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.7;
}
.request-note {
  position: relative;
  margin-top: 36px;
  padding: 6px 0 6px 22px;
  background: transparent;
  max-width: 48ch;
}
.request-note::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: color-mix(in oklch, var(--accent-secondary) 38%, transparent);
  pointer-events: none;
}
.request-note h3 {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: color-mix(in oklch, var(--fg) 75%, transparent);
  margin-bottom: 8px;
  font-weight: 400;
}
.request-note p {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.7;
  max-width: 48ch;
}
.request-form {
  position: relative;
  padding: 36px;
  background:
    radial-gradient(120% 80% at 50% -20%, color-mix(in oklch, var(--accent-secondary) 6%, transparent), transparent 60%),
    color-mix(in oklch, var(--surface) 52%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid color-mix(in oklch, var(--accent-secondary) 38%, transparent);
  border-radius: 6px;
  box-shadow: inset 0 1px 0 color-mix(in oklch, var(--accent-secondary) 18%, transparent);
}
.request-form h3 {
  font-size: var(--fs-h3);
  margin-bottom: 8px;
}
.request-form .form-note {
  color: var(--muted);
  font-size: var(--fs-sm);
  margin-bottom: 24px;
}
.form-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  color: var(--muted);
  font-size: var(--fs-xs);
}
.input {
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  color: var(--fg);
  font-size: var(--fs-sm);
  transition: border-color 0.15s;
}
.input:hover {
  border-color: color-mix(in oklch, var(--accent-secondary) 48%, transparent);
}
.input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}
textarea.input {
  min-height: 112px;
  resize: vertical;
  font-family: var(--font-body);
  line-height: 1.5;
}
.form-submit {
  margin-top: 8px;
}
.form-status {
  margin: 0;
  color: #ffafaf;
  font-size: var(--fs-xs);
  line-height: 1.5;
}
.form-submit .btn-primary:disabled {
  cursor: wait;
  opacity: 0.65;
}
.form-success {
  display: none;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.request-form.sent .form-success { display: flex; }
.request-form.sent .form-head,
.request-form.sent .form-grid { display: none; }
.form-success-icon {
  width: 30px;
  height: 30px;
  color: var(--fg);
}
.form-success h3 { margin: 0; }
.form-success-text {
  color: var(--muted);
  font-size: var(--fs-sm);
  max-width: 34ch;
}
.form-success-note {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: color-mix(in oklch, var(--accent-secondary) 75%, transparent);
}
.form-reset {
  margin-top: 10px;
  padding: 0;
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: color-mix(in oklch, var(--accent-secondary) 45%, transparent);
  transition: color 0.15s, text-decoration-color 0.15s;
}
.form-reset:hover {
  color: var(--fg);
  text-decoration-color: var(--fg);
}

.faq {
  border-top: 1px solid var(--border);
}
.faq-header {
  max-width: 500px;
  margin-bottom: 48px;
}
.faq-header h2 {
  font-size: var(--fs-h2);
  letter-spacing: -0.02em;
}
.faq-list {
  max-width: 700px;
}
details {
  border-bottom: 1px solid var(--border);
}
summary {
  padding: 20px 0;
  font-size: var(--fs-body);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: '+';
  font-family: var(--font-mono);
  color: var(--muted);
}
details[open] summary::after { content: '−'; }
details p {
  padding-bottom: 20px;
  max-width: 60ch;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

.pagefoot {
  padding: 60px 0;
  margin-top: var(--section-gap);
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
}
.footer-brand h2 {
  font-size: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-brand p {
  margin-top: 12px;
  color: var(--muted);
  font-size: var(--fs-sm);
  max-width: 28ch;
}
.footer-col h3 {
  margin-bottom: 16px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-col a {
  display: block;
  padding: 8px 0;
  font-size: var(--fs-sm);
  color: var(--fg);
  transition: color 0.15s;
}
.footer-col a:hover { color: var(--accent); }
.footer-col .meta {
  font-size: var(--fs-sm);
  color: var(--muted);
}
.footer-meta {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: var(--fs-sm);
}

@media (max-width: 920px) {
  .topnav nav { display: none; }
  .topnav-inner { height: 56px; gap: 12px; }
  .topnav .logo { margin-right: auto; }
  .menu-toggle { display: inline-flex; align-items: center; }
  .topnav .nav-cta { padding: 11px 4px; }
  .menu-toggle[aria-expanded="true"] + nav {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 12px var(--gutter);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
  }
  .topnav nav a { min-height: 44px; align-items: center; padding: 10px 0; }
  .hero-grid,
  .brand-intro-grid,
  .product-detail-grid,
  .request-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .products-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .product-card[data-od-id="product-glasses"],
  .product-card[data-od-id="product-match"] {
    grid-column: auto;
    grid-row: auto;
  }
  .product-card[data-od-id="product-match"] {
    flex-direction: column;
    aspect-ratio: auto;
    align-items: stretch;
  }
  .product-card[data-od-id="product-match"] .product-card-visual {
    flex-basis: auto;
    width: 100%;
    aspect-ratio: 1/1;
  }
  .product-card[data-od-id="product-match"] .product-card-visual img {
    object-fit: contain;
    transform: none;
  }
  .product-card[data-od-id="product-match"] .product-card-body {
    padding: 14px 4px 4px;
  }
  .product-card[data-od-id="product-match"] { gap: 0; }
  .brand-intro-grid,
  .product-detail-grid,
  .request-grid,
  .footer-grid { gap: 32px; }
  .brand-intro-content { gap: 24px; }
  .hero-grid { gap: 40px; }
  .hero { align-items: center; background-position: center; background-size: contain; }
  .hero-copy { max-width: min(100%, 42vw); }
  .request-form { padding: 28px 24px 32px; }
}
@media (min-width: 641px) and (max-width: 920px) {
  .products-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .hero-copy { max-width: 100%; }
  .hero {
    --hero-ink: var(--accent-secondary);
    min-height: clamp(360px, 92vw, 440px);
    padding-top: 96px;
    padding-bottom: 40px;
    background-color: var(--bg);
    background-position: 60% center;
    background-size: auto 100%;
  }
  .hero::before {
    background: linear-gradient(
      180deg,
      rgb(3 10 20 / 0.04) 0%,
      rgb(3 10 20 / 0.18) 46%,
      rgb(3 10 20 / 0.88) 100%
    );
  }
  .hero h1 {
    font-size: clamp(32px, 9vw, 42px);
    text-shadow: 0 2px 18px rgb(3 10 20 / 0.86);
  }
}
@media (min-width: 921px) {
  .hero {
    align-items: center;
    background-size: contain;
  }
}