:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: #05070b;
  color: #e8eef5;
  --bg: #070a11;
  --surface: rgba(18, 24, 38, 0.92);
  --surface-strong: rgba(28, 38, 64, 0.96);
  --surface-soft: rgba(15, 20, 34, 0.86);
  --text: #e8eef5;
  --text-muted: #9aa3b4;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #34d7f4;
  --accent-strong: #2ab3cf;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(13, 43, 79, 0.16), transparent 28%),
              radial-gradient(circle at bottom right, rgba(86, 117, 179, 0.12), transparent 22%),
              linear-gradient(180deg, #07070b 0%, #05060a 100%);
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  background: #0f1726;
  border: 1px solid var(--accent);
  border-radius: 0.5rem;
  z-index: 100;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(6, 10, 16, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand,
.footer-brand {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

.section {
  padding: 4rem 0;
}

.section-hero {
  padding-top: 3rem;
}

.section-label {
  margin: 0 0 0.75rem;
  color: var(--accent-strong);
  font-size: 0.92rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.section-header h2,
.hero-copy h1 {
  margin: 0;
  line-height: 1.05;
}

.hero-grid {
  display: grid;
  gap: 2rem;
}

.hero-copy {
  max-width: 680px;
}

.hero-copy h1 {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  margin-bottom: 1rem;
}

.hero-subtitle {
  margin: 0;
  max-width: 44rem;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 1.4rem;
  border-radius: 0.85rem;
  font-weight: 600;
  transition: transform 150ms ease, background-color 150ms ease, border-color 150ms ease;
  border: 1px solid transparent;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, #3fd2ff, #2bafce);
  color: #05101d;
}

.btn-secondary,
.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.14);
  color: var(--text);
}

.btn-outline:hover,
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.06);
}

.btn-block {
  width: 100%;
}

.btn-disabled {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 1rem 1.4rem;
  border-radius: 0.85rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-note {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.975rem;
}

.hero-copy-detail {
  margin-top: 1rem;
  color: var(--text-muted);
  max-width: 45rem;
  font-size: 1rem;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.trust-badges span {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  background: rgba(39, 84, 129, 0.18);
  color: var(--text);
  font-size: 0.9rem;
  border: 1px solid rgba(68, 191, 255, 0.16);
}

.hero-panel {
  display: grid;
  gap: 1rem;
}

.panel-block {
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: var(--surface);
  border-radius: 1.25rem;
}

.panel-block strong {
  display: block;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.why-grid,
.features-grid,
.security-grid,
.download-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card,
.feature-card,
.security-card,
.download-card,
.threat-panel,
.screenshot-card {
  padding: 1.7rem;
  border-radius: 1.3rem;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: var(--shadow);
}

.card h3,
.feature-card h3,
.security-card h3,
.download-card h3,
.threat-panel h3 {
  margin-top: 0;
  margin-bottom: 0.9rem;
}

.card p,
.feature-card p,
.security-card p,
.download-card p,
.threat-panel span,
.open-source-copy p {
  margin: 0;
  color: var(--text-muted);
}

.section-screenshots {
  padding-bottom: 2rem;
}

.screenshot-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.screenshot-card {
  overflow: hidden;
  min-height: 220px;
  border-radius: 1.3rem;
  background: linear-gradient(180deg, rgba(18, 24, 40, 0.95), rgba(9, 12, 19, 0.9));
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.screenshot-card img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.security-note {
  margin-top: 1.5rem;
  color: var(--text-muted);
  max-width: 56rem;
}

.threat-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.threat-panel h3 {
  margin-bottom: 1rem;
}

.threat-panel ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.threat-panel li {
  display: grid;
  gap: 0.35rem;
}

.threat-panel strong {
  display: block;
  color: var(--text);
}

.threat-panel span {
  color: var(--text-muted);
  font-size: 0.96rem;
}

.threat-panel-muted {
  background: rgba(9, 15, 26, 0.92);
}

.open-source-copy {
  display: grid;
  gap: 1rem;
}

.download-card-disabled {
  opacity: 0.72;
}

.faq-list {
  display: grid;
  gap: 1rem;
}

details {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.25rem;
  background: var(--surface);
  padding: 1rem 1.25rem;
}

summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  color: var(--text);
}

summary::-webkit-details-marker {
  display: none;
}

details[open] summary {
  color: var(--accent);
}

details p {
  margin: 0.85rem 0 0;
  color: var(--text-muted);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 12, 20, 0.9);
  backdrop-filter: blur(14px);
  padding: 2.5rem 0 3rem;
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.footer-brand {
  color: var(--accent);
  letter-spacing: 0.18em;
  margin-bottom: 0.5rem;
}

.footer-note {
  margin: 0.75rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  padding: 0.45rem 0.6rem;
  border-radius: 0.85rem;
  transition: background-color 150ms ease, color 150ms ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.55fr 1fr;
    align-items: center;
  }

  .section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr auto;
  }
}

@media (max-width: 720px) {
  .header-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-list {
    gap: 0.75rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

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