:root {
  --color-primary: #2C3E50;
  --color-secondary: #5D7A99;
  --color-accent: #0FB5B5;
  --color-neutral-bg: #F9F7F4;
  --color-text: #333333;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--color-neutral-bg); color: var(--color-text); }
body { font-family: "Open Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; line-height: 1.6; }
h1, h2, h3 { font-family: "Merriweather", Georgia, "Times New Roman", serif; line-height: 1.2; margin: 0 0 8px; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1160px; margin: 0 auto; padding: 24px; }
.hero { position: relative; border-radius: 8px; overflow: hidden; background: #ddd; }
.hero img { width: 100%; height: auto; display: block; filter: grayscale(40%) contrast(1.05); }
.hero .overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(44,62,80,0.35), rgba(44,62,80,0.6)); }
.hero .content { position: absolute; bottom: 24px; left: 24px; right: 24px; color: #fff; }
.hero h1 { font-size: clamp(32px, 5vw, 48px); }
.hero p { font-size: clamp(16px, 2.2vw, 20px); opacity: 0.95; }
.cta-row { margin-top: 16px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn { padding: 12px 16px; border-radius: 4px; box-shadow: 0 2px 6px rgba(0,0,0,0.1); display: inline-block; }
.btn.primary { background: var(--color-accent); color: #fff; }
.btn.secondary { background: transparent; color: var(--color-accent); border: 1px solid var(--color-accent); }
.btn:focus { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
@media (max-width: 1023px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 767px) { .cards { grid-template-columns: 1fr; } }
.card { background: #fff; border-radius: 8px; overflow: hidden; border: 1px solid #eee; }
.card img { width: 100%; height: 200px; object-fit: cover; filter: sepia(8%) grayscale(10%); }
.card .body { padding: 16px; }
.card h3 { margin-bottom: 8px; font-size: 20px; }

.timeline { margin-top: 40px; padding: 16px 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 12px; top: 0; bottom: 0; width: 2px; background: var(--color-secondary); opacity: 0.25; }
.timeline-item { position: relative; padding-left: 40px; margin-bottom: 16px; }
.timeline-item .dot { position: absolute; left: 6px; width: 14px; height: 14px; background: var(--color-primary); border-radius: 50%; top: 6px; box-shadow: 0 0 0 3px rgba(45,62,80,0.15); }
.timeline-item .year { font-weight: 700; color: var(--color-primary); }
.timeline-item .event { color: #444; }

.nav { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; }
.nav .brand { font-weight: 700; color: var(--color-primary); }
.nav .links { display: flex; gap: 12px; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 12px; top: 12px; background: #000; color: #fff; padding: 8px; z-index: 1000; }

/* Loading screen */
.loading { display: grid; place-items: center; min-height: 60vh; text-align: center; }
.spinner { width: 56px; height: 56px; border: 4px solid rgba(0,0,0,0.15); border-top-color: var(--color-accent); border-radius: 50%; animation: spin 1s linear infinite; margin: 16px auto; }
@keyframes spin { to { transform: rotate(360deg); } }