:root{color-scheme:light;--ink:#192a37;--muted:#52656a;--teal:#147d78;--line:#dce6e3}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:#f3f7f4;color:var(--ink);font:17px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
header{background:#fffdf8;border-bottom:1px solid var(--line)}.nav{max-width:1100px;margin:auto;padding:18px 24px;display:flex;justify-content:space-between;gap:20px;align-items:center}
.brand{display:inline-flex;align-items:center;gap:0;font-size:clamp(1.7rem,2.8vw,2rem);font-weight:800;letter-spacing:-.04em;text-decoration:none;color:var(--ink)}.brand-five{color:var(--teal)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:#e0f0ea;color:var(--teal);flex:none;margin-right:10px}.brand-mark svg{width:26px;height:26px}
.ui-icon{width:1.2em;height:1.2em;flex:none;vertical-align:-.18em}a{color:var(--teal);text-underline-offset:3px}
main{max-width:900px;margin:34px auto 70px;padding:36px 44px;background:#fffdf8;border:1px solid var(--line);border-radius:20px}
.crumbs{font-size:.9rem;margin:0 0 22px}.tag{display:inline-block;background:#e0f0ea;color:#12665f;padding:4px 10px;border-radius:999px;font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em}
h1,h2,h3{line-height:1.2;letter-spacing:-.035em}h1{font-size:clamp(2rem,5vw,2.9rem);margin:20px 0 14px}h2{font-size:1.45rem;margin:42px 0 12px;padding-top:12px;border-top:1px solid var(--line)}h3{font-size:1.15rem;margin:28px 0 8px}
p{margin:13px 0}pre{max-width:100%;overflow-x:auto;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:#eaf4ef}p,li,blockquote{overflow-wrap:anywhere}li{margin:6px 0}blockquote{margin:22px 0;padding:10px 18px;background:#eaf4ef;border-left:4px solid var(--teal);border-radius:0 10px 10px 0}blockquote p{margin:7px 0}
table{border-collapse:collapse;display:block;max-width:100%;overflow-x:auto;margin:18px 0}th,td{border:1px solid var(--line);padding:8px 12px;text-align:left;white-space:nowrap}th{background:#edf5f0}
.math{font-family:Georgia,serif;font-weight:650;white-space:nowrap}.links{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0}.links a{display:inline-flex;align-items:center;gap:8px;max-width:100%;padding:10px 14px;border:1px solid #9fd3c4;border-radius:10px;text-decoration:none;font-weight:700}
.pdf-downloads{margin-top:32px;padding-top:6px;border-top:1px solid var(--line)}.pdf-downloads h2{border:0;margin-top:18px}.pdf-links{display:flex;flex-wrap:wrap;gap:10px}.pdf-links a{display:inline-flex;align-items:center;gap:8px;max-width:100%;padding:10px 14px;border-radius:10px;background:var(--teal);color:#fff;text-decoration:none;font-weight:700}
footer{max-width:900px;margin:0 auto 50px;padding:0 24px;color:var(--muted);font-size:.88rem}
@media(max-width:760px){body{font-size:16px}main{margin:0;padding:26px 20px;border:0;border-radius:0}.nav{padding:15px 20px}h2{margin-top:34px}}
@media(max-width:380px){.nav{flex-wrap:wrap;gap:4px}.pdf-links a{width:100%;text-align:center}}