:root {
  color-scheme: dark;
  --bg: #0b1622;
  --surface: #101f2e;
  --text: #e2e8f0;
  --muted: #a4b4c6;
  --accent: #22d3ee;
  --gold: #f8c56d;
  --line: rgba(255, 255, 255, .1);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 2rem; }
body { margin: 0; background: var(--bg); color: var(--text); font: 1rem/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-underline-offset: .2em; }
a:hover { color: #9cecf7; }
a:focus-visible { outline: 3px solid var(--gold); outline-offset: 5px; border-radius: 4px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { color: #fff; line-height: 1.2; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.4rem); letter-spacing: -.035em; }
h3 { font-size: 1.125rem; }
.container { width: min(100% - 3rem, 1040px); margin-inline: auto; }
.skip-link { position: absolute; top: -5rem; left: 1rem; padding: .75rem 1rem; background: var(--accent); color: var(--bg); z-index: 2; }
.skip-link:focus { top: 1rem; }
header { border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: 80px; padding-block: 1rem; }
.nav a { text-decoration: none; }
.nav-brand { font-size: 1.125rem; font-weight: 750; color: #fff; }
.nav-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .5rem 1.5rem; }
.nav-links a { color: var(--muted); font-size: .9375rem; padding-block: .5rem; }
.nav-links a:hover { color: #fff; }
.hero { padding-block: 4rem 2.75rem; text-align: center; }
.app-icon { width: 100px; height: 100px; margin: 0 auto 1.25rem; }
.title-row { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 1rem; }
h1 { font-size: clamp(3rem, 7.5vw, 4.5rem); letter-spacing: -.05em; font-weight: 800; }
h1 span { color: var(--accent); }
.beta-badge { padding: .25rem .7rem; border: 1px solid rgba(248,197,109,.4); border-radius: 7px; color: var(--gold); background: rgba(248,197,109,.08); font-size: .875rem; font-weight: 750; letter-spacing: .1em; }
.hero-line { margin-top: .75rem; color: #fff; font-size: clamp(1.25rem, 3vw, 1.6rem); font-weight: 600; letter-spacing: -.015em; }
.hero-description { max-width: 660px; margin: 1rem auto 0; color: var(--muted); font-size: 1.125rem; }
.actions { display: flex; justify-content: center; flex-wrap: wrap; gap: .85rem; margin-top: 1.75rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .85rem; min-height: 50px; padding: .8rem 1.3rem; border: 1px solid transparent; border-radius: 10px; text-decoration: none; text-align: center; font-size: 1rem; font-weight: 700; line-height: 1.35; transition: background .15s, border-color .15s; }
.button-primary { background: var(--accent); color: #061823; }
.button-primary:hover { background: #67e8f9; color: #061823; }
.button-secondary { border-color: rgba(255,255,255,.18); background: rgba(255,255,255,.035); color: #fff; }
.button-secondary:hover { background: rgba(255,255,255,.08); border-color: #718096; color: #fff; }
.release-meta { margin-top: 1rem; color: var(--muted); font-size: .875rem; }
.beta-intro { max-width: 630px; margin: 1rem auto 0; color: #dbbd8c; font-size: .875rem; }
.product-preview { max-width: 900px; }
.product-preview > a { display: block; border: 1px solid rgba(34,211,238,.18); border-radius: 16px; overflow: hidden; box-shadow: 0 24px 64px rgba(0,0,0,.25); }
.product-preview img { width: 100%; }
figcaption { margin-top: 1rem; color: var(--muted); text-align: center; font-size: .875rem; }
.section { padding-block: 4rem; }
.section-heading { margin-bottom: 2rem; text-align: center; }
.eyebrow { margin-bottom: .75rem; color: var(--accent); font-size: .8125rem; font-weight: 750; letter-spacing: .12em; }
.section-heading > p:last-child { max-width: 620px; margin: 1rem auto 0; color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.feature-card { padding: 1.75rem; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.03); }
.feature-icon { display: block; font-size: 2rem; line-height: 1.4; margin-bottom: .85rem; }
.feature-card h3 { margin-bottom: .6rem; }
.feature-card p { color: var(--muted); }
.feature-note { display: block; margin-top: .8rem; color: var(--gold); font-size: .875rem; line-height: 1.5; }
.download-panel { display: grid; grid-template-columns: minmax(0, 1fr) 285px; gap: 2.5rem; padding: clamp(1.5rem, 5vw, 3rem); border: 1px solid rgba(34,211,238,.3); border-radius: 18px; background: var(--surface); }
.download-copy > p:not(.eyebrow) { margin-top: 1rem; color: var(--muted); }
.download-copy .signed-note { font-size: .875rem; }
.download-actions { display: flex; flex-direction: column; justify-content: center; gap: .75rem; }
.file-size { font-size: .875rem; font-weight: 500; white-space: nowrap; }
.checksum-link { text-align: center; font-size: .875rem; margin-top: .25rem; }
.install-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.75rem; margin: 2.5rem 0; padding: 0; list-style: none; }
.install-steps li { display: flex; align-items: flex-start; gap: .85rem; min-width: 0; }
.step-number { color: var(--accent); font-size: .9375rem; font-weight: 750; padding-top: .1rem; }
.install-steps h3 { margin-bottom: .6rem; }
.install-steps p { color: var(--muted); }
.beta-notes { padding: 1.5rem 1.75rem; border-left: 3px solid var(--gold); border-radius: 0 12px 12px 0; background: rgba(248,197,109,.045); }
.beta-notes h3 { color: #f8d8a1; }
.beta-notes p { margin-top: .75rem; color: #bac4d0; }
.text-links { display: flex; flex-wrap: wrap; gap: .65rem 1.5rem; margin-top: 1rem; }
.text-links a { font-size: .9375rem; }
.feedback-section { text-align: center; padding-top: 1rem; padding-bottom: 5rem; }
.feedback-section > p:not(.eyebrow) { max-width: 620px; margin: 1rem auto 0; color: var(--muted); }
.feedback-section .button { margin-top: 1.5rem; }
.feedback-section .feedback-help { font-size: .9375rem; }
.feedback-address a { overflow-wrap: anywhere; }
footer { border-top: 1px solid var(--line); padding-block: 2.5rem; text-align: center; color: var(--muted); }
footer p { margin-block: .45rem; font-size: .875rem; }
footer p:first-child { display: flex; justify-content: center; flex-wrap: wrap; gap: .4rem .8rem; }
.independent-note { max-width: 660px; margin-inline: auto; }
@media (max-width: 850px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .download-panel { gap: 2rem; grid-template-columns: minmax(0, 1fr) 240px; }
  .install-steps { grid-template-columns: 1fr; gap: 1.5rem; }
}
@media (max-width: 620px) {
  .container { width: calc(100% - 2rem); }
  .nav { flex-direction: column; justify-content: center; gap: .2rem; padding-block: 1rem; }
  .nav-links { justify-content: center; gap: .5rem 1.25rem; }
  .hero { padding-top: 2.75rem; }
  .hero-description { font-size: 1rem; }
  .feature-grid, .download-panel { grid-template-columns: minmax(0, 1fr); }
  .feature-card { padding: 1.5rem; }
  .section { padding-block: 3rem; }
  .feedback-section { padding-top: .5rem; }
  .actions { flex-direction: column; align-items: stretch; max-width: 360px; margin-inline: auto; }
  .product-preview > a { border-radius: 10px; }
  .beta-notes { padding: 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}