:root { --bg: #fdfdfb; --fg: #222; --muted: #666; --link: #1f5fbf; --rule: #e3e3de; --code: #f2f2ee; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #17181a; --fg: #e4e4e0; --muted: #9a9a95; --link: #7fb0ff; --rule: #333; --code: #222326; }
  article img { background: #fff; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 18px/1.65 Georgia, "Times New Roman", serif; }
header.site, main, footer.site { max-width: 760px; margin: 0 auto; padding: 0 16px; }
body:has(.hero) header.site, body:has(.hero) footer.site { max-width: 1040px; }
header.site { display: flex; justify-content: space-between; align-items: baseline; padding-top: 24px; padding-bottom: 12px; border-bottom: 1px solid var(--rule); font-family: system-ui, sans-serif; }
header.site nav a { margin-left: 16px; }
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
a { color: var(--link); }
h1, h2, h3 { font-family: system-ui, sans-serif; line-height: 1.25; }
h1 { font-size: 1.9em; margin-top: 1.2em; }
.meta, .tagline, time, footer.site { color: var(--muted); font-family: system-ui, sans-serif; font-size: 0.85em; }
ul.posts { list-style: none; padding: 0; }
ul.posts li { margin: 0.8em 0; }
ul.posts time { display: inline-block; min-width: 7.5em; }
article img { display: block; max-width: 100%; height: auto; margin: 1.5em auto; border-radius: 4px; }
table { border-collapse: collapse; display: block; overflow-x: auto; font-size: 0.9em; margin: 1.2em 0; }
th, td { border: 1px solid var(--rule); padding: 4px 10px; }
code { background: var(--code); padding: 1px 4px; border-radius: 3px; font-size: 0.9em; }
blockquote { border-left: 3px solid var(--rule); margin-left: 0; padding-left: 16px; color: var(--muted); }
.prevnext { display: flex; justify-content: space-between; gap: 16px; margin: 3em 0 1em; padding-top: 1em; border-top: 1px solid var(--rule); font-family: system-ui, sans-serif; font-size: 0.9em; }
footer.site { padding-top: 2em; padding-bottom: 2em; }

/* front page */
:root { --data: #5b9bf0; --p1: #f5b700; --p2: #b48be8; --edge: #d63384; --panel: #f4f3ee; }
@media (prefers-color-scheme: dark) { :root { --panel: #202124; } }
main:has(.hero) { max-width: 1040px; }
.hero { display: grid; grid-template-columns: 1fr 1.1fr; gap: 32px; align-items: center; padding: 48px 0 32px; }
.hero h1 { font-size: 2.6em; margin: 0 0 0.2em; }
.lede { font-size: 1.3em; color: var(--muted); margin: 0 0 1em; font-style: italic; }
.button { display: inline-block; margin-top: 0.6em; padding: 10px 20px; border-radius: 6px; background: var(--edge); color: #fff; text-decoration: none; font-family: system-ui, sans-serif; font-weight: 600; }
.button:hover { filter: brightness(1.1); }
.hero-art svg { width: 100%; height: auto; display: block; }
.legend { text-align: center; font: 0.8em system-ui, sans-serif; color: var(--muted); margin: 8px 0 0; }
.dot { display: inline-block; width: 11px; height: 11px; border-radius: 50%; border: 2px solid var(--edge); margin: 0 4px 0 14px; vertical-align: -1px; }
.dot.d3 { background: var(--data); } .dot.d2 { background: var(--p2); } .dot.d1 { background: var(--p1); }

.tess line { stroke: var(--edge); stroke-width: 3; }
.tess line.e4 { stroke-opacity: 0.45; }
.tess line.e0 { stroke: var(--muted); stroke-opacity: 0.5; stroke-dasharray: 6 6; stroke-width: 2; }
.tess circle { stroke: var(--edge); stroke-width: 3; fill: var(--bg); }
.tess circle.n0 { stroke: var(--muted); stroke-opacity: 0.6; stroke-dasharray: 5 5; }
.tess .n3 { fill: var(--data); animation: fill3 9s infinite; }
.tess .n2 { fill: var(--p2); animation: fill2 9s infinite; }
.tess .n1 { fill: var(--p1); animation: fill1 9s infinite; }
/* starts filled; every cycle empties, then refills heaviest layer first, like encoding */
@keyframes fill3 { 0%, 60% { fill: var(--data); } 64%, 70% { fill: var(--bg); } 74%, 100% { fill: var(--data); } }
@keyframes fill2 { 0%, 60% { fill: var(--p2); } 64%, 80% { fill: var(--bg); } 84%, 100% { fill: var(--p2); } }
@keyframes fill1 { 0%, 60% { fill: var(--p1); } 64%, 90% { fill: var(--bg); } 94%, 100% { fill: var(--p1); } }
@media (prefers-reduced-motion: reduce) { .tess circle { animation: none; } }

.series, .about { padding: 24px 0; border-top: 1px solid var(--rule); }
.kicker { display: block; font-size: 0.55em; text-transform: uppercase; letter-spacing: 0.12em; color: var(--edge); margin-bottom: 4px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.card { display: flex; flex-direction: column; border: 1px solid var(--rule); border-radius: 10px; overflow: hidden; color: var(--fg); text-decoration: none; background: var(--bg); transition: transform .15s, box-shadow .15s; }
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.12); }
.cover { background: var(--panel); padding: 20px 32px; aspect-ratio: 16 / 9; display: flex; align-items: center; justify-content: center; }
.cover img { max-width: 100%; max-height: 100%; }
.card-body { padding: 16px 20px 20px; }
.card h3 { margin: 0.2em 0 0.4em; font-size: 1.15em; }
.card p { margin: 0; font-size: 0.95em; }
.card .meta { margin-bottom: 0.3em; }
.about p { max-width: 640px; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; padding-top: 24px; }
  .hero h1 { font-size: 2em; }
}