:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #667085;
  --line: #dfe4ed;
  --surface: rgba(255, 255, 255, 0.88);
  --brand: #5f4ad8;
  --brand-dark: #4132a9;
  --soft: #f2efff;
  --radius: 18px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: radial-gradient(circle at 8% -10%, #e6ddff 0, transparent 35rem), radial-gradient(circle at 95% 12%, #d9f3ff 0, transparent 30rem), #f8fafc; line-height: 1.65; }
a { color: var(--brand-dark); }
a:focus-visible, button:focus-visible { outline: 3px solid #9f90ff; outline-offset: 3px; }
.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(223, 228, 237, .8); background: rgba(248, 250, 252, .86); backdrop-filter: blur(18px); }
.nav { min-height: 68px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 760; text-decoration: none; }
.brand-mark { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; color: white; background: linear-gradient(140deg, #806de8, #4e39c5); }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a { color: #475467; text-decoration: none; font-size: 14px; white-space: nowrap; }
.nav-links a[aria-current="page"] { color: var(--brand-dark); font-weight: 650; }
.hero { padding: 100px 0 72px; text-align: center; }
.eyebrow { color: var(--brand-dark); font-weight: 700; letter-spacing: .08em; font-size: 13px; }
h1 { max-width: 820px; margin: 14px auto 22px; font-size: clamp(42px, 7vw, 74px); line-height: 1.08; letter-spacing: -.045em; }
.hero p { max-width: 720px; margin: 0 auto 30px; color: var(--muted); font-size: 19px; }
.actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }
.button { min-height: 44px; padding: 10px 18px; border: 1px solid var(--line); border-radius: 12px; background: white; color: var(--ink); font-weight: 650; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
.button.primary { background: var(--brand); border-color: var(--brand); color: white; }
.button[aria-disabled="true"] { opacity: .58; pointer-events: none; }
.section { padding: 34px 0 74px; }
.section h2 { margin: 0 0 10px; font-size: clamp(28px, 4vw, 40px); letter-spacing: -.025em; }
.section-lead { color: var(--muted); max-width: 700px; margin: 0 0 28px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: 0 16px 38px rgba(31, 38, 61, .055); }
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p, .card li { color: var(--muted); }
.tag { display: inline-flex; padding: 3px 10px; border-radius: 999px; background: var(--soft); color: var(--brand-dark); font-size: 12px; font-weight: 700; }
.steps { counter-reset: steps; }
.steps .card::before { counter-increment: steps; content: counter(steps); display: grid; place-items: center; width: 30px; height: 30px; margin-bottom: 16px; border-radius: 9px; background: var(--soft); color: var(--brand-dark); font-weight: 750; }
.notice { border-left: 4px solid var(--brand); background: var(--soft); padding: 14px 18px; border-radius: 4px 12px 12px 4px; }
.prose { max-width: 820px; padding: 62px 0 90px; }
.prose h1 { margin: 0 0 12px; font-size: clamp(36px, 5vw, 52px); }
.prose h2 { margin-top: 38px; font-size: 24px; }
.prose p, .prose li { color: #475467; }
.meta { color: var(--muted); font-size: 14px; }
.release { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; }
.release-data { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 18px; }
.release-data div { min-width: 0; }
.release-data dt { font-size: 12px; color: var(--muted); }
.release-data dd { margin: 2px 0 0; overflow-wrap: anywhere; font-size: 14px; }
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 44px; color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
@media (max-width: 760px) {
  .shell { width: min(100% - 28px, 1120px); }
  .nav { align-items: flex-start; padding: 16px 0; flex-direction: column; gap: 12px; }
  .nav-links { margin: 0; width: 100%; overflow-x: auto; padding-bottom: 4px; }
  .hero { padding: 64px 0 42px; }
  .grid { grid-template-columns: 1fr; }
  .release { grid-template-columns: 1fr; }
  .release-data { grid-template-columns: 1fr; }
}