:root { color-scheme: dark; --bg: #10151e; --panel: #182230; --line: #314155; --ink: #edf3fa; --muted: #afc0d3; --accent: #8de1d6; font: 16px/1.65 system-ui, sans-serif; color: var(--ink); background: var(--bg); }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: var(--accent); text-underline-offset: .2em; }
a:hover { color: white; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
.wrap { width: min(1180px, calc(100% - 48px)); margin: auto; }
header { border-bottom: 1px solid var(--line); }
header .wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; padding-block: 20px; }
.brand { color: var(--ink); text-decoration: none; font-size: 21px; font-weight: 750; letter-spacing: -.04em; }
nav { display: flex; flex-wrap: wrap; gap: 24px; font-size: 14px; }
nav a { color: var(--muted); text-decoration: none; }
nav a[aria-current="page"] { color: var(--accent); }
.hero { padding-block: 66px 38px; max-width: 820px; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: 12px; font-weight: 650; color: var(--accent); }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.035em; }
h1 { font-size: clamp(36px, 5vw, 60px); margin: 18px 0 24px; }
h2 { font-size: 28px; margin: 0 0 14px; }
h3 { font-size: 20px; margin: 30px 0 12px; }
.lead { font-size: 19px; color: var(--muted); }
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px; }
.card { overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.card .preview { display: block; }
.card img { display: block; width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; background: #263648; }
.card-body { padding: 26px; }
.card-body p { color: var(--muted); }
.meta { font-size: 13px; color: var(--muted); }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 22px; margin-top: 24px; }
.button { display: inline-block; padding: 10px 17px; color: var(--bg); background: var(--accent); border: 1px solid var(--accent); border-radius: 7px; text-decoration: none; font-weight: 650; font-size: 14px; }
.button:hover { color: var(--bg); background: #bcf4ec; }
.secondary { background: transparent; color: var(--accent); }
.note { padding: 24px 0; color: var(--muted); font-size: 14px; }
.more { margin: 28px 0 64px; padding: 32px; border: 1px solid var(--line); border-radius: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.more p { color: var(--muted); }
footer { border-top: 1px solid var(--line); padding: 25px 0; color: var(--muted); font-size: 13px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
.article { max-width: 800px; padding-bottom: 64px; }
.article .hero { padding-bottom: 20px; }
.article section { margin-top: 50px; scroll-margin-top: 25px; }
.article p, .article li { color: #c6d3e1; }
.article strong { color: var(--ink); }
.toc { padding: 22px 26px; background: var(--panel); border-radius: 10px; }
.toc ol { margin: 8px 0 0; padding-left: 22px; columns: 2; column-gap: 28px; }
.toc li { margin: 5px 0; break-inside: avoid; }
.equation { overflow-x: auto; margin: 22px 0; padding: 19px 22px; border-left: 2px solid var(--accent); background: var(--panel); border-radius: 0 8px 8px 0; font: 18px/1.8 "Cambria Math", "STIX Two Math", Georgia, serif; }
.equation pre { margin: 0; font: 16px/1.8 ui-monospace, "DejaVu Sans Mono", monospace; white-space: pre; }
code { font-size: .9em; color: #d7edea; }
figure { margin: 28px 0; }
figure svg { width: 100%; height: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
figcaption { color: var(--muted); font-size: 13px; padding-top: 8px; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
th, td { border-bottom: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top; }
th { color: var(--accent); }
@media (max-width: 740px) { .wrap { width: min(100% - 32px, 1180px); } .hero { padding-top: 38px; } .gallery, .more { grid-template-columns: 1fr; } .more { padding: 24px; } .toc ol { columns: 1; } nav { gap: 16px; } .card-body { padding: 22px; } }