:root {
  color-scheme: dark;
  --background: #050506;
  --foreground: #e9e9e9;
  --muted: #a2a2a6;
  --line: #29292c;
  --font: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--background); }
body { margin: 0; color: var(--foreground); font-family: var(--font); font-weight: 300; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--foreground); outline-offset: 7px; }
::selection { color: var(--background); background: var(--foreground); }
.skip-link { position: absolute; z-index: 2; top: 12px; left: 24px; padding: 12px 18px; background: var(--foreground); color: var(--background); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.page { width: min(100%, 1640px); margin: auto; min-height: 100svh; padding: 0 clamp(24px, 5vw, 80px); display: flex; flex-direction: column; }
.header { min-height: 112px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 15px; min-height: 44px; font-size: 13px; font-weight: 500; letter-spacing: .13em; text-transform: uppercase; }
.brand-mark { width: 25px; height: 25px; fill: currentColor; }
.header-label, .eyebrow { font-size: 11px; line-height: 1.5; font-weight: 400; letter-spacing: .2em; text-transform: uppercase; }
.header-label { color: var(--muted); }
.main { flex: 1; display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(20px, 4vw, 72px); align-items: center; padding: clamp(48px, 6vh, 80px) 0; }
.eyebrow { color: var(--muted); margin: 0 0 18px; }
h1 { margin: 0 0 38px -5px; font-size: clamp(80px, 8.8vw, 144px); line-height: .98; font-weight: 200; letter-spacing: -.065em; }
.period { color: #76767a; }
h2 { font-size: clamp(27px, 2.8vw, 43px); line-height: 1.16; font-weight: 300; letter-spacing: -.03em; margin: 0 0 22px; }
.description { max-width: 440px; font-size: 16px; line-height: 1.7; color: var(--muted); margin: 0; }
.download { margin-top: 32px; max-width: 440px; }
.download-actions { display: flex; align-items: center; }
.download-action { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; max-width: 100%; min-height: 50px; padding: 13px 20px; color: var(--background); background: var(--foreground); border: 1px solid var(--foreground); border-radius: 0; font-family: var(--font); font-size: 13px; line-height: 1.6; font-weight: 500; text-align: left; transition: background .2s ease-out, border-color .2s ease-out; }
.download-action span { font-size: 18px; font-weight: 300; }
a.download-action:hover { background: #cfcfd2; border-color: #cfcfd2; }
.download-platform { margin: 14px 0 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.download-note { margin: 5px 0 0; color: var(--muted); font-size: 11px; line-height: 1.7; max-width: 44ch; }
.diagram { width: 100%; max-width: 520px; margin: 15px 0 0; justify-self: end; }
.diagram svg { width: 100%; height: auto; display: block; overflow: visible; }
.grid { color: #333337; opacity: .47; }
.survey { color: #626267; stroke-width: 1; }
.plane { color: #39393e; stroke-width: 1; }
.back-plane { stroke-dasharray: 3 5; }
.connections { color: #77777d; }
.nodes { color: #b9b9bd; }
.center path:first-child { fill: #1b1b1e; stroke: #d3d3d6; stroke-width: 1.2; }
.center path:last-child { fill: none; stroke: #88888e; stroke-width: 1; }
.diagram-labels, .plan-label { font-family: var(--font); font-size: 11px; font-weight: 400; letter-spacing: 1.5px; color: #a2a2a8; }
.plan-label { fill: #d0d0d4; }
.trace { color: #e0e0e4; stroke-dasharray: 55 580; stroke-dashoffset: 635; animation: follow-connection 12s linear infinite; }
@keyframes follow-connection { 0% { stroke-dashoffset: 635; opacity: 0; } 8% { opacity: .9; } 70% { opacity: .9; } 85%, 100% { stroke-dashoffset: 0; opacity: 0; } }
figcaption { margin-top: -10px; text-align: center; font-size: 12px; letter-spacing: .025em; color: var(--muted); }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 32px; border-top: 1px solid var(--line); padding: 28px 0 32px; }
.rebuild { display: flex; align-items: flex-start; gap: 13px; }
.status-mark { width: 6px; height: 6px; border: 1px solid #a8a8ac; margin-top: 7px; }
.rebuild p { margin: 0; font-size: 13px; line-height: 1.6; font-weight: 400; }
.rebuild p span { display: block; font-size: 12px; color: var(--muted); font-weight: 300; margin-top: 2px; }
.copyright { margin: 0; font-size: 11px; color: var(--muted); }
.footer-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 28px; }
.footer-contact { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; color: var(--muted); font-size: 11px; }
.footer-contact:hover { color: var(--foreground); }

@media (min-width: 1500px) { .main { gap: 100px; } }
@media (max-width: 900px) {
  .header { min-height: 88px; }
  .main { gap: 12px; grid-template-columns: 1.1fr 1fr; }
  h1 { font-size: 88px; }
  h2 { font-size: 30px; }
  .diagram { margin-right: -14px; width: calc(100% + 14px); }
}
@media (max-width: 680px) {
  .header { min-height: 80px; }
  .brand { font-size: 11px; gap: 11px; }
  .brand-mark { width: 22px; height: 22px; }
  .header-label { font-size: 10px; letter-spacing: .13em; }
  .main { grid-template-columns: 1fr; gap: 32px; padding: 54px 0 42px; }
  h1 { font-size: clamp(77px, 18vw, 112px); margin-bottom: 30px; margin-left: -3px; }
  h2 { font-size: clamp(27px, 6.3vw, 38px); }
  .description { max-width: 420px; font-size: 15px; }
  .download { margin-top: 24px; }
  .diagram { width: 100%; max-width: 400px; margin: 0; justify-self: center; }
  .diagram-labels, .plan-label { font-size: 15px; letter-spacing: 1px; }
  figcaption { margin-top: -6px; }
  .footer { gap: 24px; align-items: flex-start; flex-direction: column; padding: 25px 0 28px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .trace { display: none; }
}
@media (max-width: 400px) {
  .diagram-labels, .plan-label { font-size: 22px; letter-spacing: .5px; }
  .header-label { font-size: 10.5px; letter-spacing: .04em; }
}
@media (forced-colors: active) {
  .brand-mark, .plan-label, .nodes { fill: CanvasText; }
  .center path { stroke: CanvasText; }
  .center path:first-child { fill: Canvas; }
  .plane, .connections, .survey { color: CanvasText; }
  .trace { display: none; }
}
