:root {
  --ink: #172126;
  --soft: #56646a;
  --paper: #f7f8f6;
  --surface: #ffffff;
  --muted: #edf1ef;
  --line: #d9dfdc;
  --accent: #145f5a;
  --accent-dark: #0c403d;
  --max: 1100px;
  --reading: 760px;
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Helvetica,
    Arial,
    sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: #ffffff;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.reading-island {
  max-width: var(--reading);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 248, 246, 0.96);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -0.03em;
  text-decoration: none;
  white-space: nowrap;
}

.brand img {
  display: block;
  width: 46px;
  height: 46px;
  object-fit: contain;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav a {
  color: var(--soft);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

nav a:hover {
  color: var(--accent-dark);
}

.hero {
  padding: 118px 0 108px;
}

.eyebrow,
.card-number,
.contact-label {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 930px;
  margin-bottom: 30px;
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(2.2rem, 4.5vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.05em;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.35rem;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.lead {
  max-width: 820px;
  margin-bottom: 36px;
  color: var(--soft);
  font-size: clamp(1.15rem, 2vw, 1.34rem);
  line-height: 1.58;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 750;
  text-decoration: none;
}

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

.section {
  padding: 100px 0;
}

.muted {
  background: var(--muted);
}

.section-heading {
  margin-bottom: 50px;
}

.reading-island > p,
.section-heading > p:last-child,
.cards article > p:last-child,
.contact-card > p:last-child {
  color: var(--soft);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cards article {
  min-height: 280px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.contact-section {
  border-top: 1px solid var(--line);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 76px;
  align-items: start;
}

.contact-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.email-link {
  display: inline-block;
  white-space: nowrap;
  margin: 4px 0 22px;
  color: var(--accent-dark);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  text-decoration-thickness: 1px;
}
.site-footer {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer-inner p {
  margin: 0;
  color: var(--soft);
  font-size: 14px;
}

@media (max-width: 820px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding-block: 14px;
  }

  nav {
    width: 100%;
    gap: 22px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    padding: 82px 0 78px;
  }

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

  .contact-grid {
    gap: 42px;
  }
}

@media (max-width: 480px) {
  .shell {
    width: min(calc(100% - 28px), var(--max));
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .brand {
    gap: 11px;
    font-size: 16px;
  }

  nav {
    gap: 18px;
  }

  nav a {
    font-size: 14px;
  }

  .hero,
  .section {
    padding: 68px 0;
  }

  h1 {
    font-size: clamp(2.7rem, 13vw, 4rem);
  }

  h2 {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .cards article {
    min-height: auto;
  }

  .footer-inner {
    flex-direction: column;
    gap: 4px;
  }
}

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