:root {
  color-scheme: dark;
  --ink: #eef4ff;
  --muted: #aab6ca;
  --line: rgba(187, 214, 255, 0.16);
  --surface: rgba(13, 20, 36, 0.72);
  --accent: #85efc0;
  --accent-ink: #062a21;
  --night: #07101f;
}
* { box-sizing: border-box; }

html { background: var(--night); }

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  background:
    radial-gradient(800px 450px at 88% -5%, rgba(56, 122, 255, 0.31), transparent 68%),
    radial-gradient(620px 360px at -4% 18%, rgba(52, 220, 156, 0.13), transparent 68%),
    var(--night);
}

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--accent); }

main { width: min(100% - 40px, 920px); margin: 0 auto; }

.site-header, .site-footer {
  width: min(100% - 40px, 1120px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header { padding: 28px 0 18px; }
.site-footer { padding: 36px 0 48px; color: var(--muted); font-size: 0.9rem; }

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 760; text-decoration: none; letter-spacing: -0.03em; }
.brand-mark { width: 28px; height: 28px; border: 1px solid rgba(133, 239, 192, 0.68); border-radius: 50% 50% 50% 8px; transform: rotate(-35deg); background: linear-gradient(145deg, rgba(133, 239, 192, 0.82), rgba(47, 112, 255, 0.65)); box-shadow: 0 0 28px rgba(133, 239, 192, 0.24); }

.eyebrow { margin: 52px 0 12px; color: var(--accent); font-size: 0.76rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.045em; }
h1 { max-width: 760px; margin: 0; font-size: clamp(2.5rem, 7vw, 5.5rem); }
h2 { margin: 2.7rem 0 0.8rem; font-size: clamp(1.45rem, 4vw, 2rem); }
h3 { margin: 0; font-size: 1.25rem; }
p, li { color: var(--muted); }
p { max-width: 720px; }
strong { color: var(--ink); }

.lead { max-width: 680px; margin: 26px 0 36px; font-size: clamp(1.05rem, 2vw, 1.28rem); }
.rule { height: 1px; margin: 48px 0 0; background: var(--line); }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 30px 0 58px; }
.card { min-height: 215px; padding: 25px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); box-shadow: 0 18px 65px rgba(0, 0, 0, 0.16); }
.card p { margin: 12px 0 20px; }
.card a { color: var(--accent); font-weight: 700; }

.article { padding-bottom: 22px; }
.article ul { padding-left: 1.2rem; }
.article li + li { margin-top: 0.65rem; }
.notice { margin: 32px 0; padding: 20px 22px; border-left: 2px solid var(--accent); border-radius: 0 14px 14px 0; background: rgba(133, 239, 192, 0.075); }
.notice p { margin: 0; }
.meta { color: var(--muted); font-size: 0.9rem; }
.back { display: inline-flex; margin-top: 22px; color: var(--accent); font-weight: 700; text-decoration: none; }
.language-nav, .product-links { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.product-links { margin: 24px 0; }
.product-links a { display: inline-flex; min-height: 44px; align-items: center; padding: 8px 16px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; }
.product-links a:first-child { color: var(--accent); }
.product-preview { margin: 30px 0 38px; }
.product-preview img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 20px; }
.product-preview figcaption { margin-top: 10px; color: var(--muted); font-size: 0.9rem; }
.steps { padding-left: 1.4rem; }
.steps li + li { margin-top: 16px; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
code { overflow-wrap: anywhere; }

@media (max-width: 640px) {
  main { width: min(100% - 32px, 920px); }
  .site-header, .site-footer { width: min(100% - 32px, 1120px); }
  .site-header { padding-top: 20px; }
  .eyebrow { margin-top: 36px; }
  .grid { grid-template-columns: 1fr; }
}