:root {
  --surface: #f7fafc;
  --surface-alt: #eef2f5;
  --card: #ffffff;
  --ink: #181c1e;
  --muted: #43474e;
  --line: #c3c6cf;
  --primary: #1b3b5f;
  --primary-strong: #002547;
  --bronze: #a68966;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--surface);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

.container {
  width: min(1280px, calc(100% - 3rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 250, 252, 0.95);
  backdrop-filter: blur(6px);
}

.nav-wrap {
  min-height: 4.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.brand-mark {
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 2rem;
  line-height: 1;
  letter-spacing: 0.03em;
  color: var(--primary);
  white-space: nowrap;
}

.brand-regular {
  font-weight: 400;
}

.brand-strong {
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
}

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

.nav-cta {
  white-space: nowrap;
}

.hero {
  padding: 7rem 0 5.5rem;
  text-align: center;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--primary-strong);
  font-family: "Newsreader", Georgia, "Times New Roman", serif;
}

h1 {
  max-width: 760px;
  margin-inline: auto;
  font-size: clamp(2rem, 4.8vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  line-height: 1.2;
}

h3 {
  font-size: 1.4rem;
  line-height: 1.25;
}

.hero-copy {
  max-width: 720px;
  margin: 1.6rem auto 0;
  font-size: 1.12rem;
  color: var(--muted);
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 0 1.15rem;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--primary-strong);
}

.btn-secondary {
  color: var(--primary);
  border-color: var(--primary);
  background: transparent;
}

.btn-secondary:hover {
  background: #eaf0f5;
}

.hero-image {
  margin: 4.5rem auto 0;
  width: min(100%, 860px);
  max-height: 280px;
  border: 1px solid var(--line);
  border-radius: 4px;
  display: block;
  object-fit: cover;
}

.section {
  padding: 6rem 0;
}

.definition-section {
  padding-top: 0;
}

.definition-card {
  max-width: 920px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--primary);
  background: #f6f8fb;
  border-radius: 4px;
  padding: 1.25rem 1.4rem;
}

.definition-label {
  margin: 0 0 0.35rem;
  color: var(--primary);
  font-size: 0.76rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-weight: 600;
}

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

.section-alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-intro {
  margin: 0.8rem 0 2.2rem;
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.5rem;
}

.card p {
  margin: 0.9rem 0 0;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: 3rem;
  align-items: start;
}

.split p {
  margin: 0 0 1rem;
  color: var(--muted);
}

blockquote {
  margin: 1.7rem 0 0;
  padding: 1rem 1rem 1rem 1.2rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--bronze);
  font-family: "Newsreader", Georgia, serif;
  font-size: 1.32rem;
  line-height: 1.3;
  color: var(--primary);
  background: #f6f8fb;
}

.contact-email {
  margin: 1rem 0 0.5rem;
  color: var(--muted);
}

.contact-email a {
  color: var(--primary);
}

.contact-links {
  margin: 0;
  color: var(--muted);
}

.contact-links a {
  color: var(--primary);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.2rem 0;
  background: #f3f6f8;
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-wrap p {
  margin: 0;
  font-size: 0.78rem;
  color: #59606a;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-brand img {
  width: auto;
  height: auto;
}

.footer-brand {
  margin: 0;
  color: var(--primary);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.03em;
  text-transform: none;
}

@media (max-width: 1000px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(1280px, calc(100% - 1.5rem));
  }

  .site-header {
    position: static;
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .hero {
    padding-top: 4rem;
  }

  .brand-mark {
    font-size: 1.45rem;
  }

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

  .section {
    padding: 4rem 0;
  }

  .footer-wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}