:root {
  --ink: #17202a;
  --muted: #5b6670;
  --line: #dce7ed;
  --paper: #f7fbfd;
  --white: #ffffff;
  --blue: #168bd2;
  --blue-dark: #096ba8;
  --blue-soft: #e7f5fd;
  --shadow: 0 16px 45px rgba(35, 73, 94, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 5%, rgba(22, 139, 210, 0.13), transparent 24rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header,
main,
footer {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 84px;
  display: flex;
  align-items: center;
  gap: 15px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--blue-dark);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.03em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--blue);
  border-radius: 10px;
  font-size: 1rem;
  box-shadow: 0 8px 20px rgba(22, 139, 210, 0.24);
}

.tagline {
  color: var(--muted);
  font-size: 0.9rem;
}

.hero {
  padding: 100px 0 78px;
  max-width: 870px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue-dark);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 780px;
  margin-bottom: 25px;
  font-size: clamp(3rem, 8vw, 6.7rem);
  line-height: 0.96;
  letter-spacing: -0.065em;
}

.intro {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2.3vw, 1.35rem);
}

.status {
  width: fit-content;
  margin-top: 32px;
  padding: 11px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--blue-dark);
  background: var(--blue-soft);
  border: 1px solid #c9e9fa;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--blue);
  border-radius: 50%;
}

.features {
  padding: 74px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 680px;
  margin-bottom: 34px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

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

.feature-card {
  min-height: 208px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.feature-card:target {
  border-color: var(--blue);
  box-shadow: 0 16px 45px rgba(22, 139, 210, 0.19);
}

.number {
  display: block;
  margin-bottom: 28px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.feature-card h3 {
  margin-bottom: 8px;
  font-size: 1.22rem;
  letter-spacing: -0.02em;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.memory {
  margin: 38px 0 64px;
  padding: 45px;
  color: var(--white);
  background: var(--ink);
  border-radius: 22px;
  font-size: clamp(1.15rem, 2.8vw, 1.65rem);
  line-height: 1.5;
}

.memory p {
  max-width: 850px;
  margin-bottom: 0;
}

.ad-container {
  min-height: 100px;
  margin: 0 0 66px;
  display: grid;
  align-items: center;
  overflow: hidden;
}

footer {
  min-height: 110px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

footer strong {
  color: var(--blue-dark);
}

@media (max-width: 680px) {
  .site-header,
  main,
  footer {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    min-height: 72px;
  }

  .tagline {
    display: none;
  }

  .hero {
    padding: 72px 0 58px;
  }

  .status {
    align-items: flex-start;
    border-radius: 14px;
  }

  .status-dot {
    margin-top: 7px;
    flex: 0 0 auto;
  }

  .features {
    padding: 58px 0;
  }

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

  .feature-card {
    min-height: 0;
  }

  .memory {
    padding: 28px;
  }

  footer {
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 2px;
  }
}

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