:root {
  color-scheme: light;
  --ink: #15191d;
  --muted: #5b6873;
  --paper: #f7fbfd;
  --panel: #ffffff;
  --line: #d9e8ef;
  --ice: #e7f7ff;
  --blue: #1689cf;
  --blue-dark: #073657;
  --glow: rgba(22, 137, 207, 0.22);
  --shadow: 0 24px 70px rgba(11, 45, 66, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background:
    radial-gradient(circle at 80% 10%, rgba(39, 169, 225, 0.18), transparent 34rem),
    linear-gradient(180deg, #fafdff 0%, var(--paper) 42%, #eef6f9 100%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(5, 60, 94, 0.18));
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 650;
}

.nav a {
  border-radius: 999px;
  padding: 0.55rem 0.8rem;
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.75);
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 440px);
  align-items: center;
  gap: clamp(2rem, 7vw, 5.5rem);
  width: min(1120px, calc(100% - 32px));
  min-height: calc(100svh - 84px);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.hero-copy {
  max-width: 700px;
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 11ch;
  margin-bottom: 1.1rem;
  font-size: clamp(4rem, 13vw, 8.8rem);
  line-height: 0.82;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0.9rem;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.65rem;
  font-size: 1.05rem;
}

.lead {
  max-width: 620px;
  margin-bottom: 1.6rem;
  color: var(--muted);
  font-size: clamp(1.12rem, 2vw, 1.38rem);
  line-height: 1.55;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-weight: 800;
}

.button.primary {
  border-color: var(--blue-dark);
  color: white;
  background: var(--blue-dark);
  box-shadow: 0 14px 28px rgba(7, 54, 87, 0.18);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.78);
}

.hero-mark {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 420px;
}

.hero-mark::before {
  position: absolute;
  inset: 10% 5%;
  content: "";
  border-radius: 999px;
  background:
    radial-gradient(circle at 40% 35%, rgba(255, 255, 255, 0.95), transparent 18%),
    radial-gradient(circle, var(--glow), transparent 68%);
  filter: blur(4px);
}

.hero-mark img {
  position: relative;
  width: min(100%, 440px);
  height: auto;
  filter: drop-shadow(var(--shadow));
}

.section {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 1.5rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature {
  min-height: 210px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.2rem;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 16px 42px rgba(11, 45, 66, 0.06);
}

.feature p,
.steps p,
.site-footer p {
  color: var(--muted);
  line-height: 1.6;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1.5rem, 6vw, 4rem);
  align-items: start;
}

.steps {
  display: grid;
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.steps span {
  color: var(--blue);
  font-weight: 900;
}

.steps p {
  margin-bottom: 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  padding: 1.4rem 0 2rem;
}

.site-footer p {
  margin-bottom: 0;
}

.site-footer p:first-child {
  color: var(--ink);
  font-weight: 850;
}

@media (max-width: 820px) {
  .site-header {
    position: static;
  }

  .nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 2.5rem;
  }

  .hero-mark {
    grid-row: 1;
    min-height: auto;
  }

  .hero-mark img {
    width: min(72vw, 340px);
  }

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

  .feature {
    min-height: auto;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .steps li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .button {
    width: 100%;
  }
}