:root {
  color-scheme: dark;
  --bg: #0a0a0f;
  --surface: #18181b;
  --text: #fafafa;
  --muted: #b5b5bf;
  --accent: #f59e0b;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    17px/1.65 -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}
header,
main,
footer {
  max-width: 1050px;
  margin: auto;
  padding: 28px 24px;
}
header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
a {
  color: var(--accent);
  text-underline-offset: 4px;
}
h1 {
  font-size: clamp(36px, 7vw, 66px);
  line-height: 1.08;
  max-width: 850px;
}
h2 {
  font-size: 25px;
}
h3 {
  font-size: 19px;
}
p,
li {
  color: var(--muted);
}
section,
article {
  padding: 24px;
  background: var(--surface);
  border: 1px solid #303037;
  border-radius: 18px;
  margin: 24px 0;
}
label {
  display: block;
  margin: 18px 0;
}
input,
select,
button {
  font: inherit;
  min-height: 48px;
  border: 1px solid #555;
  border-radius: 8px;
  padding: 10px;
  background: #27272a;
  color: var(--text);
  max-width: 100%;
}
input {
  width: 100%;
}
button {
  cursor: pointer;
  color: var(--accent);
}
.eyebrow {
  color: var(--accent);
  letter-spacing: 0.12em;
  font-size: 13px;
}
.actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.actions a {
  padding: 14px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  min-height: 48px;
}
footer {
  font-size: 14px;
  color: var(--muted);
}
[hidden] {
  display: none !important;
}
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}
output {
  display: block;
  padding: 18px;
  color: var(--text);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 750;
  font-size: 21px;
}
.brand img,
.preview-top img {
  border-radius: 10px;
}
.hero {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 35px 0;
}
.hero h1 {
  font-size: clamp(36px, 5vw, 60px);
}
.product-preview {
  background: linear-gradient(145deg, #1e242b, #111216);
  border: 1px solid #46515b;
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 18px 70px #0006;
}
.product-preview h2 {
  font-size: 26px;
  line-height: 1.25;
}
.preview-top {
  display: flex;
  gap: 14px;
  align-items: center;
}
.preview-top p {
  margin: 0;
  font-size: 14px;
}
.product-preview .eyebrow {
  font-size: 11px;
  margin-top: 24px;
}
dl {
  margin: 20px 0;
}
dl div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid #343b42;
}
dt {
  color: #bdc7d0;
}
dd {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}
.coverage {
  height: 7px;
  background: #343b42;
  border-radius: 8px;
  overflow: hidden;
}
.coverage span {
  display: block;
  height: 100%;
  background: #f59e0b;
}
.preview-note {
  border-left: 3px solid #f59e0b;
  padding-left: 14px;
  font-size: 15px;
}
@media (max-width: 760px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 10px 0;
  }
  .product-preview {
    padding: 24px;
  }
  .hero h1 {
    font-size: 42px;
  }
  header {
    gap: 18px;
  }
  nav {
    gap: 16px;
  }
}

.where-to-buy { margin-top: 48px; border-style: dashed; }
.where-to-buy summary { min-height: 44px; padding: 10px 0; color: var(--accent); cursor: pointer; font-weight: 600; }
.where-to-buy summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }