:root {
  --bg: #0b0d12;
  --bg-2: rgba(255, 255, 255, 0.03);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --border: rgba(255, 255, 255, 0.10);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);

  --card: rgba(255, 255, 255, 0.06);
  --card-2: rgba(255, 255, 255, 0.09);

  --primary: #7c5cff;
  --primary-2: #a48bff;

  --radius: 16px;
  --radius-lg: 22px;

  --container: 1120px;
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-2: rgba(5, 10, 20, 0.04);
  --text: rgba(5, 10, 20, 0.92);
  --muted: rgba(5, 10, 20, 0.72);
  --border: rgba(5, 10, 20, 0.12);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.12);

  --card: rgba(255, 255, 255, 0.75);
  --card-2: rgba(255, 255, 255, 0.92);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 15% 10%, rgba(124, 92, 255, 0.35), transparent 60%),
    radial-gradient(700px 480px at 85% 15%, rgba(164, 139, 255, 0.20), transparent 60%),
    radial-gradient(700px 520px at 60% 85%, rgba(124, 92, 255, 0.18), transparent 60%),
    var(--bg);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 10;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--card-2);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(8, 10, 14, 0.55);
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] .site-header {
  background: rgba(246, 247, 251, 0.7);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(145deg, rgba(124, 92, 255, 1), rgba(164, 139, 255, 1));
  color: white;
  box-shadow: 0 14px 28px rgba(124, 92, 255, 0.22);
}

.brand-name {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-tagline {
  font-size: 12px;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-link {
  font-size: 13px;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 12px;
}

.nav-link:hover {
  background: var(--bg-2);
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-button {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  border:  1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
}

.icon-button:hover {
  background: var(--card-2);
}

.icon {
  font-size: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  font-weight: 600;
  font-size: 14px;
  background: var(--card);
  cursor: pointer;
}

.button:hover {
  background: var(--card-2);
}

.button.primary {
  background: linear-gradient(145deg, rgba(124, 92, 255, 1), rgba(164, 139, 255, 1));
  border: none;
  color: white;
}

.button.primary:hover {
  filter: brightness(1.06);
}

.section {
  padding: 78px 0;
}

.section.muted {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  max-width: 760px;
}

.section-title {
  margin: 0;
  font-size: 36px;
  letter-spacing: -0.03em;
}

.section-subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.hero {
  padding: 84px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero-title {
  margin: 0;
  font-size: clamp(32px, 5vw, 54px);
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.hero-subtitle {
  margin: 16px 0 0;
  font-size: 18px;
  color: var(--muted);
}

.hero-cta {
  margin-top: 22px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-badges {
  margin-top: 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.badge {
  border: 1px solid var(--border);
  background: var(--card);
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.glass {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.glass-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.dots {
  display: flex;
  gap: 7px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.dot.red {
  background: #ff605c;
}

.dot.yellow {
  background: #ffbd44;
}

.dot.green {
  background: #00ca4e;
}

.glass-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.glass-body {
  padding: 18px;
  height: calc(100% - 46px);
  display: flex;
  flex-direction: column;
}

.mock-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  flex: 1;
}

.cell {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
}

.cell.a {
  background: rgba(124, 92, 255, 0.23);
}

.cell.b {
  background: rgba(255, 255, 255, 0.05);
}

.cell.c {
  background: rgba(255, 255, 255, 0.07);
}

.cell.d {
  background: rgba(164, 139, 255, 0.18);
}

.mock-hint {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.cards {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.card {
  padding: 18px 18px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.20);
}

[data-theme="light"] .card {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.card-title {
  margin: 0;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.card-text {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.steps {
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  list-style: none;
}

.step {
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
}

.step-number {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 800;
  background: rgba(124, 92, 255, 0.25);
  border: 1px solid rgba(124, 92, 255, 0.35);
}

.step-title {
  margin: 12px 0 0;
  font-size: 16px;
}

.step-text {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.download {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 14px;
  align-items: start;
}

.download-copy {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: var(--shadow);
}

.download-actions {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.download-meta {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.download-panel {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--card);
}

.panel-title {
  font-weight: 700;
  letter-spacing: -0.01em;
}

.panel-list {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.faq {
  margin-top: 24px;
  display: grid;
  gap: 10px;
}

.faq-item {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  padding: 14px 14px;
}

.faq-q {
  cursor: pointer;
  font-weight: 600;
}

.faq-a {
  margin-top: 10px;
  color: var(--muted);
}

.site-footer {
  padding: 30px 0;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.footer-brand {
  font-weight: 700;
}

.footer-note {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.footer-right {
  display: flex;
  gap: 14px;
}

.footer-link {
  color: var(--muted);
  font-size: 13px;
  padding: 6px 8px;
  border-radius: 10px;
}

.footer-link:hover {
  background: var(--bg-2);
  color: var(--text);
}

@media (max-width: 980px) {
  .nav {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .download {
    grid-template-columns: 1fr;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero-title {
    font-size: 44px;
  }

  .brand {
    min-width: 0;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .header-actions .button {
    width: auto;
  }
}