:root {
  color-scheme: light dark;
  --violet: #6e56e8;
  --periwinkle: #8797ff;
  --coral: #ff7868;
  --lilac: #eee9ff;
  --night: #151126;
  --ink: #191725;
  --muted: #686574;
  --paper: #fbfaff;
  --line: #ded9ef;
  --display: ui-rounded, "SF Pro Rounded", "Avenir Next", system-ui, sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 10; padding: .65rem 1rem; background: var(--night); color: white; border-radius: .7rem; }
.skip-link:focus { top: 1rem; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header, footer {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
  display: flex;
  align-items: center;
}
.site-header { height: 84px; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 750 1.05rem/1 var(--display); letter-spacing: -.02em; }
.brand img { border-radius: 10px; }
nav { display: flex; gap: 4px; margin-left: auto; }
nav a { padding: .55rem .75rem; color: var(--muted); text-decoration: none; font-size: .9rem; border-radius: .65rem; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); background: var(--lilac); }
.language select { appearance: none; border: 1px solid var(--line); border-radius: 999px; padding: .55rem 2.15rem .55rem .85rem; color: var(--ink); background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='m3 4 3 3 3-3' fill='none' stroke='%23686574' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right .75rem center; font: inherit; font-size: .82rem; }

.page { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.hero { min-height: 690px; display: grid; grid-template-columns: 1.3fr .7fr; align-items: center; gap: clamp(40px, 6vw, 80px); padding: 72px 0 110px; }
.eyebrow, .section-label { margin: 0 0 20px; color: var(--violet); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3 { font-family: var(--display); letter-spacing: -.04em; line-height: 1.1; }
.hero h1 { max-width: 780px; margin: 0; font-size: clamp(3rem, 4.5vw, 4.5rem); font-weight: 800; }
.lede { max-width: 620px; margin: 32px 0; color: var(--muted); font-size: clamp(1rem, 1.6vw, 1.3rem); }
.primary-link, .contact-link { display: inline-flex; align-items: center; min-height: 48px; padding: .6rem 1.1rem; border-radius: 999px; background: var(--violet); color: white; font-weight: 700; text-decoration: none; }
.primary-link::after { content: "→"; margin-left: .75rem; }
.primary-link:hover, .contact-link:hover { background: #5d43d9; }

.signal { display: grid; justify-items: center; gap: 20px; }
.signal-disc { width: min(360px, 76vw); aspect-ratio: 1; display: flex; align-items: center; justify-content: center; gap: clamp(5px, 1vw, 10px); border-radius: 50%; background: var(--night); box-shadow: 0 42px 80px color-mix(in srgb, var(--violet) 24%, transparent); transform: rotate(-7deg); }
.signal-disc span { width: clamp(8px, 1.3vw, 14px); height: var(--h); max-height: 160px; min-height: 30px; border-radius: 999px; background: linear-gradient(180deg, var(--periwinkle), var(--violet) 72%, var(--coral)); transform-origin: center; animation: breathe 2.8s ease-in-out infinite alternate; }
.signal-disc span:nth-child(2n) { animation-delay: -.7s; }
.signal p { margin: 0; color: var(--muted); font: 700 .7rem/1 var(--body); letter-spacing: .2em; }
.signal b { color: var(--coral); }
@keyframes breathe { to { transform: scaleY(.72); filter: saturate(1.2); } }

.device-flow { margin-bottom: 100px; padding: 42px 0; border-block: 1px solid var(--line); display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 40px; }
.device-flow h2 { max-width: 440px; margin: 0; font-size: clamp(2rem, 4vw, 3.7rem); }
.device-flow ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.device-flow li { display: grid; grid-template-columns: 60px 1fr; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--line); }
.device-flow li:last-child { border-bottom: 0; }
.device-flow li span { color: var(--coral); font: 750 .72rem/1 var(--body); letter-spacing: .12em; }
.device-flow li strong { font: 700 clamp(1.05rem, 2vw, 1.35rem)/1.3 var(--display); }

.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-bottom: 140px; }
.feature-list article { display: grid; grid-template-columns: 44px 1fr; gap: 18px; }
.feature-list article > span { color: var(--violet); font: 800 1.4rem/1 var(--display); }
.feature-list h3 { margin: 0 0 10px; font-size: 1.15rem; }
.feature-list p { margin: 0; color: var(--muted); font-size: .95rem; }

.prose-page { padding: 90px 0 140px; }
.page-intro { max-width: 820px; margin-bottom: 90px; }
.page-intro h1 { margin: 0 0 24px; font-size: clamp(3rem, 6vw, 6rem); }
.page-intro > p:last-child { color: var(--muted); font-size: 1.1rem; }
.prose-grid { display: grid; grid-template-columns: 220px minmax(0, 720px); gap: clamp(40px, 10vw, 150px); }
.prose-grid aside { position: sticky; top: 28px; align-self: start; display: grid; gap: 8px; }
.prose-grid aside p { margin: 0 0 8px; color: var(--muted); font-size: .75rem; font-weight: 750; text-transform: uppercase; letter-spacing: .1em; }
.prose-grid aside a { text-decoration: none; font-size: .9rem; }
.prose section { scroll-margin-top: 30px; margin-bottom: 72px; }
.prose h2 { margin: 0 0 24px; font-size: clamp(1.8rem, 3vw, 2.6rem); }
.prose p, .prose li { color: var(--muted); }
.prose ol { padding-left: 1.3rem; }
details { padding: 18px 0; border-bottom: 1px solid var(--line); }
details:first-of-type { border-top: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 700; }
details p { padding-right: 30px; }
.contact-link { margin-top: 8px; }

.privacy-summary { max-width: 900px; margin: -30px 0 100px auto; padding: 36px 42px; border-left: 5px solid var(--coral); background: var(--lilac); }
.privacy-summary strong { font: 750 clamp(1.35rem, 2.5vw, 2rem)/1.25 var(--display); }
.privacy-summary p { margin: 12px 0 0; color: #504b66; }
.privacy-prose { max-width: 820px; margin-left: auto; margin-right: 8%; }
.privacy-prose a { color: var(--violet); }

footer { min-height: 120px; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }
footer div:last-child { display: flex; gap: 18px; }
footer a { text-decoration: none; }

:focus-visible { outline: 3px solid color-mix(in srgb, var(--periwinkle) 70%, white); outline-offset: 3px; }

@media (max-width: 800px) {
  .site-header { height: auto; min-height: 74px; flex-wrap: wrap; padding: 14px 0; gap: 10px 18px; }
  nav { order: 3; width: 100%; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 8px; }
  nav a { padding-inline: .45rem; }
  .language { margin-left: auto; }
  .hero { min-height: 0; grid-template-columns: 1fr; padding: 70px 0 100px; }
  .hero h1 { font-size: clamp(2.8rem, 13vw, 5.2rem); }
  .signal { order: -1; }
  .signal-disc { width: min(260px, 72vw); }
  .device-flow { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .prose-page { padding-top: 64px; }
  .page-intro { margin-bottom: 64px; }
  .prose-grid { grid-template-columns: 1fr; }
  .prose-grid aside { position: static; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
  .privacy-summary { margin-top: -20px; padding: 28px; }
  .privacy-prose { margin-right: 0; }
  footer { align-items: flex-start; flex-wrap: wrap; padding: 30px 0; }
  footer p { order: 3; width: 100%; margin: 0; }
}

@media (prefers-color-scheme: dark) {
  :root { --paper: #100e19; --ink: #f8f6ff; --muted: #aaa5b9; --line: #302a43; --lilac: #251f3b; }
  .privacy-summary p { color: #c9c3dd; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .signal-disc span { animation: none; }
}