:root {
  --bg: #081013;
  --surface: #101a1e;
  --surface-2: #162329;
  --text: #edf7f7;
  --muted: #a9b9bc;
  --line: #26383e;
  --accent: #69e6c8;
  --accent-strong: #8af6dc;
  --gold: #e5b65a;
  --max: 1180px;
  --radius: 18px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top right, rgba(44, 118, 112, 0.16), transparent 34rem),
    linear-gradient(180deg, #0b1215 0%, var(--bg) 42rem);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; }

img { display: block; max-width: 100%; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  background: var(--accent);
  color: #05100e;
  padding: .7rem 1rem;
  border-radius: .5rem;
  font-weight: 700;
}

.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto auto auto;
  gap: 1.25rem;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: .9rem 1.25rem;
  background: rgba(8, 16, 19, .91);
  border-bottom: 1px solid rgba(105, 230, 200, .12);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .9rem;
  width: fit-content;
  text-decoration: none;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: .015em;
  white-space: nowrap;
}

.header-safex {
  width: 92px;
  height: auto;
  justify-self: end;
}

.top-nav {
  display: flex;
  gap: 1rem;
  font-size: .92rem;
  color: var(--muted);
}

.top-nav a {
  padding: .4rem .25rem;
  text-decoration: none;
}

.top-nav a:hover,
.top-nav a:focus-visible { color: var(--text); }

.language-picker {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: .82rem;
  color: var(--muted);
}

.language-picker select {
  max-width: 210px;
  padding: .55rem 2rem .55rem .7rem;
  border: 1px solid var(--line);
  border-radius: .6rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem 5rem;
}

.hero {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
  min-height: 76vh;
  padding: 5rem 0 4rem;
}

.hero-copy h1,
.section-heading h2,
.security-copy h2,
.open-section h2 {
  margin: .25rem 0 1rem;
  line-height: 1.08;
  letter-spacing: -.035em;
}

.hero-copy h1 { font-size: clamp(2.7rem, 5vw, 4.9rem); max-width: 12ch; }
.section-heading h2,
.security-copy h2,
.open-section h2 { font-size: clamp(2rem, 4vw, 3.5rem); }

.eyebrow {
  margin: 0 0 .6rem;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.hero-body {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.5vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: .72rem 1rem;
  border: 1px solid transparent;
  border-radius: .72rem;
  text-decoration: none;
  font-weight: 750;
}

.button-primary {
  background: var(--accent);
  color: #06120f;
}

.button-primary:hover,
.button-primary:focus-visible { background: var(--accent-strong); }

.button-secondary {
  border-color: var(--line);
  background: var(--surface);
}

.button-secondary:hover,
.button-secondary:focus-visible { border-color: var(--accent); }

.release-summary {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem 1.1rem;
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: .84rem;
}

.release-summary code {
  color: var(--text);
  overflow-wrap: anywhere;
}

.release-summary a { color: var(--accent); }

.hero-art {
  width: min(116%, 780px);
  justify-self: start;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .34);
  background: #05090a;
}

.hero-art img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.section {
  padding: 5rem 0;
  border-top: 1px solid var(--line);
}

.section-heading { max-width: 820px; }
.section-heading > p:not(.eyebrow) { color: var(--muted); }

.feature-grid,
.mode-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.feature-grid { grid-template-columns: repeat(4, 1fr); }
.mode-grid { grid-template-columns: repeat(3, 1fr); }

.card,
.mode-card,
.notice {
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
}

.card h3,
.mode-card h3,
.notice h3 { margin: 0 0 .55rem; }

.card p,
.mode-card p,
.notice p {
  margin: 0;
  color: var(--muted);
}

.app-shot {
  margin: 2rem 0 0;
  padding: .65rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .28);
}

.app-shot img { width: 100%; height: auto; border-radius: 13px; }

.mode-value {
  display: inline-block;
  margin-bottom: .65rem;
  color: var(--gold);
  font-size: 1.55rem;
  font-weight: 850;
}

.security-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .38fr);
  gap: 2rem;
  align-items: start;
}

.security-copy > p:not(.eyebrow) { color: var(--muted); }

.security-steps {
  display: grid;
  gap: .8rem;
  padding-left: 1.5rem;
}

.security-steps li { padding-left: .35rem; }

.notice { position: sticky; top: 6rem; border-color: rgba(229, 182, 90, .35); }

.translation-note {
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: rgba(105, 230, 200, .055);
}

.open-section {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
}

.open-section p:not(.eyebrow) { max-width: 70ch; color: var(--muted); }

.open-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  justify-content: flex-end;
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .84rem;
}

.site-footer p { max-width: 90ch; }

.noscript {
  position: fixed;
  inset: auto 1rem 1rem;
  z-index: 50;
  padding: 1rem;
  border: 1px solid var(--gold);
  border-radius: .75rem;
  background: #1b1710;
  color: var(--text);
}

:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .site-header {
    position: static;
    grid-template-columns: 1fr auto auto;
  }

  .top-nav { display: none; }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 3rem;
  }

  .hero-copy h1 { max-width: 14ch; }

  .hero-art {
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
  }

  .feature-grid { grid-template-columns: repeat(2, 1fr); }

  .security-section,
  .open-section { grid-template-columns: 1fr; }

  .notice { position: static; }

  .open-actions { justify-content: flex-start; }
}

@media (max-width: 620px) {
  .site-header {
    grid-template-columns: 1fr auto;
    gap: .75rem;
  }

  .header-safex {
    width: 82px;
  }

  .language-picker {
    grid-column: 1 / -1;
    justify-content: space-between;
  }
  .language-picker select { width: min(100%, 230px); }

  main { padding-inline: 1rem; }

  .hero { padding-top: 2.5rem; }
  .hero-copy h1 { font-size: clamp(2.45rem, 13vw, 4rem); }

  .feature-grid,
  .mode-grid { grid-template-columns: 1fr; }

  .section { padding: 3.8rem 0; }

  .button { width: 100%; }

  .release-summary { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}