:root {
  --max-width: 1040px;
  --text-color: #111827;
  --muted: #4b5563;
  --accent: #3454ff;
  --accent-hover: #2541d1;
  --background: linear-gradient(155deg, #f7f9ff 0%, #eef3ff 35%, #ffffff 100%);
  --card-bg: rgba(255, 255, 255, 0.98);
  --border: rgba(17, 24, 39, 0.08);
  --shadow-soft: 0 20px 55px rgba(15, 23, 42, 0.12);
  --shadow-focus: 0 30px 70px rgba(52, 84, 255, 0.25);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --font-display: "SF Pro Display", "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-display);
  line-height: 1.65;
  color: var(--text-color);
  background: var(--background);
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--accent-hover);
  text-decoration: underline;
  text-decoration-color: rgba(52, 84, 255, 0.35);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px clamp(20px, 4vw, 36px);
}

header {
  padding-top: 28px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  background: rgba(255, 255, 255, 0.9);
  padding: 18px clamp(18px, 4vw, 28px);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: 0 24px 50px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(14px);
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.links a {
  color: var(--muted);
  font-weight: 500;
}

.links a[aria-current="page"],
.links a:hover,
.links a:focus {
  color: var(--accent);
}

main.container {
  flex: 1;
  display: grid;
  gap: clamp(26px, 5vw, 36px);
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: clamp(60px, 10vw, 96px);
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow: var(--shadow-soft);
  padding: clamp(28px, 5vw, 44px);
}

.hero {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 24px;
  justify-items: center;
  text-align: center;
  background: rgba(52, 84, 255, 0.1);
  border: 1px solid rgba(52, 84, 255, 0.25);
}

.hero-illustration {
  width: clamp(140px, 24vw, 220px);
  height: auto;
  border-radius: 20px;
  box-shadow: 0 24px 50px rgba(15, 23, 42, 0.12);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  letter-spacing: -0.025em;
}

.hero-subtitle {
  max-width: 560px;
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  color: var(--muted);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  padding: 12px 22px;
  font-weight: 600;
  border: 0;
  cursor: pointer;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), #6e84ff);
  color: #ffffff;
  box-shadow: var(--shadow-focus);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button-primary:hover,
.button-primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 32px 70px rgba(52, 84, 255, 0.35);
}

.hero-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  color: var(--muted);
  font-size: 0.95rem;
}

.feature-section h2,
.links-card h2 {
  margin: 0 0 18px;
  font-size: clamp(1.6rem, 2.2vw, 1.9rem);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(18px, 3vw, 26px);
}

.feature-card {
  padding: 22px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.08);
  display: grid;
  gap: 8px;
  font-weight: 500;
  color: var(--muted);
}

.feature-card .icon {
  font-size: 1.4rem;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: clamp(14px, 2.8vw, 22px);
}

.link-tile {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(17, 24, 39, 0.06);
  color: var(--text-color);
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.link-tile span {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.link-tile:hover,
.link-tile:focus {
  transform: translateY(-3px);
  box-shadow: 0 26px 60px rgba(15, 23, 42, 0.12);
}

.policy {
  max-width: 760px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-soft);
  padding: clamp(32px, 5vw, 48px);
  margin-top: clamp(40px, 8vw, 72px);
  margin-bottom: clamp(40px, 8vw, 96px);
}

.policy h1 {
  margin-top: 0;
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  letter-spacing: -0.015em;
}

.policy h2 {
  margin-top: 32px;
  font-size: 1.3rem;
}

.policy ul,
.policy ol {
  margin: 16px 0;
  padding-left: 22px;
  color: var(--muted);
}

.policy p,
.policy li {
  color: var(--muted);
}

.footer {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-bottom: 0;
  box-shadow: 0 -18px 40px rgba(15, 23, 42, 0.08);
  margin-top: auto;
  padding: 26px;
  font-size: 0.95rem;
  color: var(--muted);
  text-align: center;
}

ol {
  padding-left: 20px;
}

ol li {
  color: var(--muted);
  margin-bottom: 8px;
}

@media (max-width: 900px) {
  .nav {
    padding: 16px 20px;
  }

  .links {
    gap: 16px;
  }
}

@media (max-width: 640px) {
  header {
    padding-top: 18px;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .links {
    width: 100%;
    justify-content: space-between;
    flex-wrap: wrap;
    row-gap: 10px;
  }

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

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