:root{--ink:#14213d;--muted:#55607a;--line:#e3e7ef;--bg:#fff;--soft:#f5f7fb;--brand:#0f766e;--brand-ink:#fff;--accent:#f59e0b}
@media (prefers-color-scheme:dark){:root{--ink:#e8ecf4;--muted:#a3adc2;--line:#2b3446;--bg:#0f1420;--soft:#161d2c;--brand:#2dd4bf;--brand-ink:#06201d}}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}a{color:var(--brand)}
.top{border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:1}.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);text-decoration:none}nav{display:flex;gap:16px;flex-wrap:wrap}nav a{color:var(--ink);text-decoration:none}nav a:hover{color:var(--brand)}.lang{font-weight:700}
main{padding:32px 16px 48px}h1{font-size:2rem;line-height:1.2;margin:.2em 0 .4em}h2{margin-top:2em;font-size:1.4rem}h3{font-size:1.1rem}
.lead{font-size:1.15rem;color:var(--muted)}.small{font-size:.9rem;color:var(--muted)}
.hero{padding:16px 0 8px}.btn{display:inline-block;background:var(--brand);color:var(--brand-ink);padding:10px 18px;border-radius:8px;text-decoration:none;font-weight:600;margin:4px 8px 4px 0}.btn.ghost{background:transparent;color:var(--brand);border:1px solid var(--brand)}
figure{margin:20px 0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--soft)}figure img{display:block;width:100%;height:auto}figcaption{padding:8px 12px;font-size:.9rem;color:var(--muted)}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:8px 24px;padding-left:18px}
.toc{display:flex;flex-wrap:wrap;gap:8px 16px;padding:12px 16px;background:var(--soft);border-radius:10px}
table{width:100%;border-collapse:collapse;margin:12px 0}th,td{text-align:left;padding:10px;border-bottom:1px solid var(--line);vertical-align:top}.num{text-align:right;white-space:nowrap}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.card{border:1px solid var(--line);border-radius:12px;padding:16px;background:var(--soft)}.card h3{margin:0}.price{font-size:1.8rem;font-weight:700;margin:.2em 0}.price span{font-size:1rem;font-weight:400;color:var(--muted)}
.foot{border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;padding:16px 0}