:root {
  --background: #f8fafc;
  --surface: #ffffff;
  --surface-strong: #0f172a;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --accent-soft: #dbeafe;
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.10);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.14), transparent 34rem),
    linear-gradient(180deg, #f8fafc 0%, #eef2f7 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(248, 250, 252, 0.78);
  border-bottom: 1px solid rgba(226, 232, 240, 0.75);
}

.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), #0f172a);
  font-size: 0.82rem;
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 0.94rem;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--text);
}

.section {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 88px 0;
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  align-items: center;
  gap: 48px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  max-width: 760px;
  font-size: clamp(3rem, 8vw, 6.9rem);
  line-height: 0.92;
  letter-spacing: -0.075em;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.18rem;
  letter-spacing: -0.02em;
}

.hero-text,
.section-heading p,
.privacy-card p,
.contact-section p {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 750;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: #ffffff;
  background: var(--accent);
  box-shadow: 0 14px 34px rgba(37, 99, 235, 0.28);
}

.button.primary:hover {
  background: var(--accent-dark);
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
}

.hero-card {
  padding: 34px;
  color: #ffffff;
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.38), transparent 20rem),
    linear-gradient(145deg, #0f172a, #172554);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-card-top {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 42px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.92rem;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 0 8px rgba(34, 197, 94, 0.12);
}

.hero-card h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.hero-card p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.72);
}

.section-heading {
  margin-bottom: 32px;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.app-card,
.privacy-card,
.principle-grid article,
.roadmap-item,
.contact-section {
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(226, 232, 240, 0.95);
  border-radius: var(--radius-md);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.06);
}

.app-card {
  padding: 26px;
}

.app-card.featured {
  border-color: rgba(37, 99, 235, 0.38);
  background:
    linear-gradient(180deg, rgba(219, 234, 254, 0.72), rgba(255, 255, 255, 0.9));
}

.app-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.app-status {
  margin-bottom: 4px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.app-status.muted {
  color: var(--muted);
}

.app-pill {
  flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  font-size: 0.78rem;
  font-weight: 750;
}

.app-card p,
.app-card li,
.principle-grid p,
.roadmap-item p {
  color: var(--muted);
}

.app-card ul {
  margin: 18px 0 22px;
  padding-left: 19px;
}

.text-link {
  color: var(--accent-dark);
  font-weight: 800;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
}

.split-section {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 32px;
  align-items: start;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.principle-grid article {
  padding: 24px;
}

.privacy-card {
  padding: 34px;
}

.roadmap-list {
  display: grid;
  gap: 14px;
}

.roadmap-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px;
}

.roadmap-item span {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: var(--accent-dark);
  background: var(--accent-soft);
  font-weight: 850;
}

.roadmap-item p {
  margin-bottom: 0;
}

.contact-section {
  padding: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 50px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.footer p {
  margin: 0;
}

@media (max-width: 860px) {
  .nav {
    min-height: 64px;
  }

  .nav-links {
    display: none;
  }

  .section {
    padding: 64px 0;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 54px;
  }

  .hero-card {
    padding: 26px;
  }

  .app-grid,
  .split-section,
  .principle-grid {
    grid-template-columns: 1fr;
  }

  .contact-section {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .hero-actions,
  .button {
    width: 100%;
  }

  .app-card-header {
    flex-direction: column;
  }

  .roadmap-item {
    grid-template-columns: 1fr;
  }
}