:root {
  color-scheme: dark;
  --navy: #0c1c33;
  --panel: #122744;
  --panel-soft: #1a2e4e;
  --line: #294c7c;
  --text: #f7f9ff;
  --muted: #bac8de;
  --violet: #7d7ff4;
  --cyan: #13a7e8;
  --green: #83d92f;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--navy); color: var(--text); line-height: 1.6; }
a { color: inherit; }
.site-header, main, footer { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.site-header { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 760; text-decoration: none; font-size: 1.15rem; }
.brand img { object-fit: contain; }
nav { display: flex; flex-wrap: wrap; gap: 22px; }
nav a, footer a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a:focus-visible, footer a:hover, footer a:focus-visible { color: var(--text); }
.hero { min-height: 630px; display: grid; grid-template-columns: 1fr .88fr; gap: 64px; align-items: center; padding: 76px 0 96px; }
.hero-copy, .product-shot { min-width: 0; }
.eyebrow { color: var(--violet); text-transform: uppercase; letter-spacing: .12em; font-weight: 760; font-size: .78rem; }
h1, h2 { line-height: 1.08; letter-spacing: -.035em; margin: 0 0 22px; }
h1 { font-size: clamp(3.1rem, 7vw, 5.7rem); max-width: 760px; }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); }
.lede { color: var(--muted); font-size: 1.2rem; max-width: 660px; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; align-items: center; }
.actions.vertical { flex-direction: column; align-items: stretch; margin: 0; }
.button { display: inline-flex; justify-content: center; padding: 13px 20px; border-radius: 9px; font-weight: 700; text-decoration: none; border: 1px solid var(--line); }
.button.primary { background: var(--violet); border-color: var(--violet); color: #081424; }
.button.secondary { background: var(--panel-soft); }
a.button:hover, a.button:focus-visible { transform: translateY(-1px); filter: brightness(1.08); }
.release-note, .language-note { color: var(--muted); font-size: .93rem; max-width: 680px; }
.product-shot { margin: 0; padding: 13px; border: 1px solid var(--line); background: var(--panel); border-radius: 18px; box-shadow: 0 30px 70px rgba(0,0,0,.3); }
.product-shot img { display: block; width: 100%; height: auto; border-radius: 9px; }
.feature-grid, .platform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-grid article, .platform-grid article { background: var(--panel); border: 1px solid var(--line); border-radius: 13px; padding: 28px; }
.feature-grid h2 { font-size: 1.25rem; letter-spacing: -.015em; margin-bottom: 10px; }
.feature-grid p, .platform-grid p { color: var(--muted); margin-bottom: 0; }
.split-section { margin: 120px 0; padding: 54px; background: var(--panel-soft); border-radius: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.split-section p { color: var(--muted); }
.link-list { padding: 0; list-style: none; }
.link-list li { border-bottom: 1px solid var(--line); }
.link-list a { display: block; padding: 12px 0; text-decoration: none; }
.platform-grid { grid-template-columns: repeat(2, 1fr); }
.platform-grid strong { color: var(--green); }
.contribute { margin: 120px 0 80px; padding: 52px; border: 1px solid var(--violet); border-radius: 18px; display: grid; grid-template-columns: 1fr 300px; gap: 60px; align-items: center; }
.contribute p { color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 28px 0 42px; display: flex; justify-content: space-between; gap: 20px; color: var(--muted); }

@media (max-width: 820px) {
  .site-header { align-items: flex-start; padding: 20px 0; }
  nav { justify-content: flex-end; gap: 12px; }
  .hero { grid-template-columns: 1fr; gap: 42px; padding-top: 50px; }
  .feature-grid, .platform-grid, .split-section, .contribute { grid-template-columns: 1fr; }
  .split-section, .contribute { padding: 32px; gap: 24px; }
}

@media (max-width: 540px) {
  .site-header, main, footer { width: min(100% - 24px, 1160px); }
  .site-header { display: block; }
  nav { margin-top: 18px; justify-content: flex-start; }
  nav a { font-size: .9rem; }
  h1 { font-size: 2.5rem; overflow-wrap: anywhere; }
  .actions, .button { width: 100%; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}