:root {
  --bg: #f6f8fa;
  --surface: #ffffff;
  --surface-alt: #eef2f5;
  --text: #1f2933;
  --muted: #5f6c78;
  --accent: #2f5d73;
  --accent-dark: #24485a;
  --border: #d9e0e5;
  --max-width: 1180px;
  --narrow-width: 820px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    Inter,
    "Segoe UI",
    Arial,
    sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

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

.container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
}

.narrow {
  max-width: var(--narrow-width);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.nav-container {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand {
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

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

.hero {
  padding: 110px 0 100px;
  background:
    linear-gradient(
      135deg,
      #f8fafb 0%,
      #eef3f6 55%,
      #e7edf1 100%
    );
  border-bottom: 1px solid var(--border);
}

.hero-content {
  max-width: 900px;
}

.eyebrow,
.section-label,
.project-type {
  margin: 0 0 12px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-size: 0.78rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.03em;
}

h1 {
  margin: 0;
  font-size: clamp(3.1rem, 8vw, 5.6rem);
  font-weight: 750;
}

h2 {
  margin: 0 0 22px;
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  margin: 0 0 12px;
  font-size: 1.25rem;
}

.hero-subtitle {
  margin: 18px 0 0;
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--accent-dark);
  font-weight: 600;
}

.hero-intro {
  max-width: 760px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 650;
  transition:
    transform 0.15s ease,
    background 0.15s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: white;
  background: var(--accent);
}

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

.button.secondary {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
}

.button.secondary:hover {
  background: var(--surface);
}

.section {
  padding: 88px 0;
}

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

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading p,
.section p {
  color: var(--muted);
}

.principles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.principles div {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-weight: 600;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.cards.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.card p {
  margin-bottom: 0;
}

.project-card {
  display: flex;
  flex-direction: column;
  min-height: 260px;
}

.project-card a {
  margin-top: auto;
  padding-top: 24px;
  font-weight: 700;
}

.large-copy {
  color: var(--text) !important;
  font-size: 1.35rem;
  font-weight: 600;
}

.closing-statement {
  margin-top: 26px;
  color: var(--text) !important;
  font-size: 1.08rem;
  font-weight: 650;
}

.site-footer {
  padding: 34px 0;
  background: #18242c;
  color: #dce3e7;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-content p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: #dce3e7;
}

.footer-links a:hover {
  color: white;
}

@media (max-width: 900px) {
  .cards.four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .nav-container {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  nav {
    gap: 12px 18px;
  }

  .hero {
    padding: 76px 0 70px;
  }

  .section {
    padding: 64px 0;
  }

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

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