:root {
  --bg: #f5f1e8;
  --surface: #fcfaf7;
  --surface-strong: #f1ebdf;
  --text: #1d2323;
  --muted: #687173;
  --accent: #4b635b;
  --accent-strong: #2f463f;
  --border: rgba(29, 35, 35, 0.12);
  --shadow: 0 18px 45px rgba(23, 30, 31, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --max-width: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, #f9f7f2 100%);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.2rem 3.5rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.1rem;
  margin-top: 0.75rem;
  background: rgba(252, 250, 247, 0.82);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 30px rgba(29, 35, 35, 0.04);
}

.brand {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.95rem;
  transition: background-color 180ms ease, color 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.active {
  background: var(--surface-strong);
  color: var(--text);
  outline: none;
}

.hero {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 2rem;
  padding: 4rem 0 2.2rem;
  align-items: start;
}

.hero-copy h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-copy p {
  margin: 0;
  font-size: 1.02rem;
  color: var(--muted);
  max-width: 62ch;
}

.hero-meta {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
  box-shadow: var(--shadow);
}

.hero-meta .eyebrow,
.section-title {
  display: inline-block;
  margin-bottom: 0.6rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-meta ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-meta li + li {
  margin-top: 0.85rem;
}

.hero-meta strong {
  display: block;
  margin-bottom: 0.2rem;
}

.summary-card,
.hub-grid,
.page-card,
.page-intro,
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.summary-card {
  padding: 1.5rem 1.55rem;
  margin-top: 0.3rem;
}

.summary-card p {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 1rem;
  margin-top: 1.2rem;
}

.timeline-item {
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.timeline-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.timeline-item span {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem;
  margin-top: 1.4rem;
}

.hub-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 220px;
  padding: 1.3rem;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--surface-strong) 0%, #ffffff 100%);
  border: 1px solid rgba(75, 99, 91, 0.14);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.hub-card:hover,
.hub-card:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(29, 35, 35, 0.08);
}

.hub-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.25rem;
}

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

.hub-card .arrow {
  margin-top: 1rem;
  font-weight: 700;
  color: var(--accent-strong);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.breadcrumb a {
  color: var(--accent);
  font-weight: 600;
}

.page-stack {
  display: grid;
  gap: 1.2rem;
  padding: 1.4rem 0 0;
}

.page-intro {
  padding: 1.5rem 1.6rem;
}

.page-intro h2 {
  margin: 0 0 0.45rem;
  font-size: clamp(1.6rem, 2.2vw, 2rem);
}

.page-intro p {
  margin: 0;
  color: var(--muted);
  max-width: 68ch;
}

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

.project-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 220px;
  padding: 1.3rem;
}

.project-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.2rem;
}

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

.primary-action {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 1rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  transition: background-color 180ms ease, transform 180ms ease;
}

.primary-action:hover,
.primary-action:focus-visible {
  background: var(--accent-strong);
  transform: translateY(-1px);
  outline: none;
}

.page-card {
  padding: 2rem;
  margin-top: 2rem;
}

.page-card h2 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

.page-card p {
  color: var(--muted);
  max-width: 68ch;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 2.6rem;
  }

  .hub-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-shell { padding: 0.8rem 0.85rem 2.5rem; }
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
    border-radius: 24px;
  }
  .nav-links { gap: 0.5rem; }
  .hero-copy h1 { font-size: 2rem; }
  .page-card { padding: 1.4rem; }
}