:root {
  --bg: #f3f7f8; --surface: #fff; --text: #0c355c; --muted: #496574;
  --border: #bdcfd5; --blue: #126581; --blue-dark: #0c355c;
  --blue-bright: #0c355c; --sky: #00a3bd; --green: #59870b;
  --deep-teal: #126581; --shadow: 4px 4px 0 #ccdde3;
}
body { line-height: 1.5; }
.color-filters { position: absolute; pointer-events: none; }
.site-header { max-width: 1160px; padding: 0 24px 14px; }
.masthead { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 28px 0; }
.brand { flex-shrink: 0; font-size: 18px; font-weight: 750; line-height: 1.35; }
.brand span { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 500; letter-spacing: .03em; }
.topnav { margin: 0; justify-content: flex-end; gap: 6px; }
.topnav a, .topnav button { padding: 9px 11px; background: transparent; border: 0; border-radius: 8px; font-size: 13px; font-weight: 650; }
.topnav a.active { background: var(--blue); color: #fff; }
.topnav a:hover, .topnav button:hover { background: #d9edf1; color: var(--blue-dark); }
.hero { background: #e0f0f4; color: var(--text); border: 2px solid var(--text); box-shadow: 6px 6px 0 var(--text); border-radius: 12px; padding: 30px 24px 16px; }
.hero h1 { font-weight: 850; font-size: clamp(1.8rem, 3.6vw, 2.75rem); line-height: 1.15; letter-spacing: -.045em; margin: 0 0 18px; }
.skyline-recomposed { display: block; position: relative; width: 100%; max-width: 1040px; height: auto; margin: -37px auto 0; color: var(--blue-dark); pointer-events: none; overflow: visible; }
.hero .author { color: var(--muted); font-size: clamp(.95rem, 1.6vw, 1.15rem); font-weight: 300; margin: 0 auto 18px; text-align: center; }
#title-symbol { display: inline-block; width: 1.25em; height: .95em; vertical-align: -.12em; margin: 0 .08em; color: var(--blue); }
#title-symbol svg { display: block; width: 100%; height: 100%; transform: scale(.8); transform-origin: center; }
main { max-width: 1160px; padding: 26px 24px 38px; }
.grid { gap: 20px; }
.card { border: 2px solid var(--text); border-radius: 12px; padding: 24px; box-shadow: var(--shadow); gap: 20px; }
.card.cours, .card.python, .card.revisions { border-top: 2px solid var(--text); }
.card.cours { background: #edf8fa; }
.card.python { background: #e9eff3; }
.card.revisions { background: #f2f6e8; }
.card:hover { transform: translateY(-2px); border-color: var(--text); box-shadow: 5px 6px 0 #adc8d2; }
.card h2 { font-size: 1.15rem; line-height: 1.35; }
.card p { font-size: .9rem; line-height: 1.65; color: var(--muted); }
.symbol { border: 1px solid var(--text); border-radius: 50%; background: #d9edf1; color: var(--text); }
.python .symbol { background: #d9f2f5; color: #126581; }
.revisions .symbol { background: #e7efce; color: #086015; }
.symbol svg { display: block; width: 27px; height: 27px; }
.python .terminal-icon { background: #d9edf1; color: var(--blue-dark); }
.link-label { color: var(--blue); display: flex; justify-content: space-between; align-items: center; font-size: .85rem; }
.link-label::after { content: '↗'; font-size: 1.25rem; }
.revisions .link-label { color: #086015; }
.random-dialog { border: 2px solid var(--text); border-radius: 12px; }
.random-result { background: #f2f6e8; border-color: #becf9a; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
@media (max-width: 1050px) {
  .skyline-recomposed { margin-top: -17px; }
  .masthead { flex-direction: column; align-items: flex-start; gap: 18px; }
  .topnav { justify-content: flex-start; }
}
@media (max-width: 600px) {
  .skyline-recomposed { margin-top: 0; }
  .site-header { padding: 0 16px 14px; }
  main { padding: 22px 16px 32px; }
  .masthead { padding: 22px 0; }
  .topnav { display: flex; flex-wrap: wrap; gap: 4px; }
  .topnav a, .topnav button { padding: 8px; font-size: 12px; }
  .hero { padding: 24px 14px 14px; }
  .hero h1 { font-size: 1.8rem; }
  .card { padding: 20px; }
}
@media (prefers-reduced-motion: reduce) { .card { transition: none; } .card:hover { transform: none; } }