:root {
  color-scheme: dark;
  --bg: #0d1117;
  --panel: #151b23;
  --raised: #1b2430;
  --line: #283444;
  --text: #e7edf5;
  --muted: #9aa8b8;
  --faint: #718096;
  --accent: #52d6be;
  --accent-strong: #76eed8;
  --green: #45d392;
  --amber: #efb95f;
  --stopped: #6d7889;
  --max: 1160px;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 75% 10%, rgba(82, 214, 190, 0.09), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .65rem 1rem;
  background: var(--accent);
  color: #071511;
  border-radius: .5rem;
}
.skip-link:focus { top: 1rem; }
.shell { width: min(var(--max), calc(100% - 2rem)); margin-inline: auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(40, 52, 68, .8);
  background: rgba(13, 17, 23, .88);
  backdrop-filter: blur(16px);
}
.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  font-family: var(--mono);
  font-weight: 750;
  text-decoration: none;
  letter-spacing: .02em;
}
.brand-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(82, 214, 190, .5);
  border-radius: 8px;
  color: var(--accent);
  background: rgba(82, 214, 190, .08);
}
.nav-links { display: flex; align-items: center; gap: 1.25rem; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: .9rem; text-decoration: none; }
.nav-links a:hover { color: var(--text); }
.language-link { font-family: var(--mono); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .7rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: .7rem;
  background: var(--raised);
  color: var(--text);
  font-size: .9rem;
  font-weight: 700;
  text-decoration: none;
}
.button:hover { border-color: #40536a; transform: translateY(-1px); }
.button.primary { border-color: var(--accent); background: var(--accent); color: #071511; }
.button.primary:hover { background: var(--accent-strong); }
.hero {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(540px, 1.15fr);
  align-items: center;
  gap: 4rem;
  padding-block: clamp(5rem, 10vw, 8.5rem) 5rem;
}
.eyebrow {
  display: inline-flex;
  gap: .5rem;
  align-items: center;
  margin: 0 0 1.2rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 1.5rem; height: 1px; background: currentColor; }
h1, h2, h3 { margin-top: 0; line-height: 1.15; letter-spacing: -.025em; }
h1 { margin-bottom: 1.35rem; font-size: clamp(2.75rem, 6vw, 5.25rem); }
h1 .accent { color: var(--accent); }
.hero-copy { margin: 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.25rem); max-width: 37rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.hero-actions.centered { justify-content: center; }
.hero-note { margin: 1rem 0 0; color: var(--faint); font-size: .78rem; }
.hero-note strong { color: var(--muted); }
.app-window {
  overflow: hidden;
  border: 1px solid #334154;
  border-radius: 16px;
  background: #10151c;
  box-shadow: 0 32px 90px rgba(0, 0, 0, .42), 0 0 0 1px rgba(255,255,255,.025) inset;
  transform: rotate(.6deg);
}
.window-bar { display: flex; align-items: center; gap: .45rem; height: 42px; padding: 0 .9rem; border-bottom: 1px solid var(--line); background: #171e27; }
.traffic { width: 10px; height: 10px; border-radius: 50%; background: #485568; }
.window-title { margin: auto; padding-right: 3rem; color: var(--faint); font: .7rem var(--mono); }
.app-body { display: grid; grid-template-columns: 145px 1fr; min-height: 390px; }
.sidebar { padding: 1rem .75rem; border-right: 1px solid var(--line); background: #141a22; }
.side-brand { padding: .2rem .45rem 1rem; color: var(--accent); font: 700 .78rem var(--mono); }
.side-label { margin: .7rem .45rem .35rem; color: var(--faint); font: 700 .57rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.side-item { display: flex; gap: .5rem; align-items: center; margin-bottom: .15rem; padding: .45rem; border-radius: .4rem; color: var(--muted); font-size: .7rem; }
.side-item.active { color: var(--text); background: rgba(82,214,190,.08); }
.board { padding: 1.05rem; overflow: hidden; }
.board-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: .9rem; }
.board-head strong { font-size: .82rem; }
.board-head span { color: var(--faint); font: .58rem var(--mono); }
.columns { display: grid; grid-template-columns: repeat(4, minmax(105px, 1fr)); gap: .65rem; }
.column { min-height: 300px; padding: .65rem; border: 1px solid #253142; border-radius: .6rem; background: #151c25; }
.column-title { display: flex; justify-content: space-between; margin: 0 0 .65rem; color: var(--muted); font: 700 .55rem var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.card { margin-bottom: .55rem; padding: .65rem; border: 1px solid #2c394a; border-radius: .5rem; background: #1b2430; }
.card-title { display: flex; align-items: center; gap: .4rem; color: var(--text); font-size: .64rem; font-weight: 700; }
.card-detail { margin-top: .45rem; color: var(--faint); font: .52rem/1.45 var(--mono); }
.dot { width: 7px; height: 7px; flex: none; border-radius: 50%; background: var(--stopped); }
.dot.live { background: var(--green); box-shadow: 0 0 9px rgba(69,211,146,.6); }
.dot.quiet { background: var(--amber); }
.proof-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-bottom: 7rem; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--line); }
.proof { padding: 1.25rem; background: var(--panel); text-align: center; }
.proof strong { display: block; color: var(--text); font: 700 .82rem var(--mono); }
.proof span { color: var(--faint); font-size: .75rem; }
section { scroll-margin-top: 90px; }
.section { padding-block: 5rem; }
.section-head { max-width: 720px; margin-bottom: 2.8rem; }
.section-head h2 { margin-bottom: 1rem; font-size: clamp(2rem, 4vw, 3.2rem); }
.section-head p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.feature { min-height: 250px; padding: clamp(1.4rem, 3vw, 2rem); border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(145deg, rgba(27,36,48,.9), rgba(21,27,35,.65)); }
.feature-number { color: var(--accent); font: 700 .72rem var(--mono); }
.feature h3 { margin: 3rem 0 .8rem; font-size: 1.45rem; }
.feature p { margin: 0; color: var(--muted); }
.signal-row { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.2rem; }
.signal { display: inline-flex; align-items: center; gap: .45rem; padding: .35rem .55rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font: .66rem var(--mono); }
.boundary { display: grid; grid-template-columns: .9fr 1.1fr; gap: 3rem; align-items: start; padding: 2.4rem; border: 1px solid rgba(239,185,95,.35); border-radius: 16px; background: rgba(239,185,95,.045); }
.boundary h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
.boundary-list { display: grid; gap: 1rem; }
.boundary-item { padding-bottom: 1rem; border-bottom: 1px solid rgba(239,185,95,.17); }
.boundary-item:last-child { padding-bottom: 0; border-bottom: 0; }
.boundary-item strong { display: block; margin-bottom: .25rem; color: var(--amber); font: 700 .76rem var(--mono); }
.boundary-item span { color: var(--muted); }
.privacy-band { border-block: 1px solid var(--line); background: #11171f; }
.privacy-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 4rem; align-items: center; }
.privacy-grid h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
.privacy-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: .8rem; }
.privacy-point { padding: 1rem; border-left: 2px solid var(--accent); background: rgba(82,214,190,.035); }
.privacy-point strong { display: block; font-size: .9rem; }
.privacy-point span { color: var(--muted); font-size: .82rem; }
.install { text-align: center; padding-block: 7rem; }
.install h2 { margin-bottom: 1rem; font-size: clamp(2.2rem, 5vw, 4rem); }
.install p { max-width: 640px; margin: 0 auto 2rem; color: var(--muted); }
.faq { display: grid; grid-template-columns: .55fr 1.45fr; gap: 4rem; }
.faq h2 { font-size: clamp(2rem, 4vw, 3rem); }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { padding: 1.4rem 0; border-bottom: 1px solid var(--line); }
.faq-item h3 { margin-bottom: .5rem; font-size: 1rem; }
.faq-item p { margin: 0; color: var(--muted); }
.site-footer { margin-top: 5rem; border-top: 1px solid var(--line); }
.footer { min-height: 110px; display: flex; align-items: center; gap: 1rem; color: var(--faint); font-size: .8rem; }
.footer-links { display: flex; gap: 1rem; margin-left: auto; }
.footer a:hover { color: var(--text); }
.legal { max-width: 760px; padding-block: 5rem 2rem; }
.legal h1 { font-size: clamp(2.4rem, 6vw, 4rem); }
.legal h2 { margin-top: 2.5rem; font-size: 1.3rem; }
.legal p, .legal li { color: var(--muted); }
.legal code { font-family: var(--mono); color: var(--accent); }
.error-page { min-height: calc(100vh - 180px); display: grid; place-items: center; text-align: center; }
.error-code { color: var(--accent); font: 700 1rem var(--mono); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 3rem; }
  .app-window { transform: none; }
  .privacy-grid, .boundary, .faq { grid-template-columns: 1fr; gap: 2rem; }
  .nav-links a:not(.button):not(.language-link) { display: none; }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 1.25rem, var(--max)); }
  .nav { gap: .65rem; }
  .nav-links { gap: .65rem; }
  .nav .button { min-height: 38px; padding: .5rem .7rem; font-size: .75rem; }
  .hero { padding-top: 4rem; }
  .app-body { grid-template-columns: 1fr; min-height: 0; }
  .sidebar { display: none; }
  .board { padding: .65rem; }
  .columns { grid-template-columns: repeat(2, 1fr); }
  .column { min-height: 160px; }
  .column:nth-child(n+3) { display: none; }
  .proof-strip, .feature-grid, .privacy-points { grid-template-columns: 1fr; }
  .proof { text-align: left; }
  .section { padding-block: 3.8rem; }
  .footer { align-items: flex-start; flex-direction: column; padding-block: 1.5rem; }
  .footer-links { margin-left: 0; flex-wrap: wrap; }
}

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