:root{
 --nav:#07111d;--nav2:#0d2340;--mint:#31d0aa;--blue:#1768d8;--ink:#142235;--muted:#53677c;
 --line:#dbe5ee;--paper:#fff;--bg:#f6f9fc;--soft:#edf4fa;--warn:#fff8e7;--max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:auto;padding-left:22px;padding-right:22px}
.site-header{background:var(--nav);border-bottom:1px solid #17324d;position:sticky;top:0;z-index:50}
.nav{min-height:66px;display:flex;align-items:center;gap:20px}.brand{font-size:1.28rem;font-weight:900;letter-spacing:-.035em;color:#fff}.brand span{color:var(--mint)}
.navlinks{margin-left:auto;display:flex;gap:16px;align-items:center}.navlinks a{color:#cfe0f1;font-size:.91rem}.navlinks .aff{background:var(--mint);color:#05231b;padding:9px 13px;border-radius:9px;font-weight:850}
.hero{background:linear-gradient(135deg,var(--nav),var(--nav2) 70%,#11374f);color:white;padding:76px 0 68px}.hero h1{font-size:clamp(2.55rem,5vw,4.8rem);line-height:1.02;letter-spacing:-.055em;max-width:920px;margin:10px 0 20px}.hero p{font-size:1.18rem;color:#c8d8e9;max-width:800px}
.eyebrow{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;font-weight:850;color:var(--mint)}
.btn{display:inline-block;background:var(--mint);color:#05231b;padding:13px 17px;border-radius:10px;font-weight:850;margin:8px 8px 0 0}.btn.alt{background:#173650;color:#fff;border:1px solid #2d5678}
.section{padding:52px 0}.section h2{font-size:2rem;letter-spacing:-.035em;line-height:1.15}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:0 4px 18px rgba(15,44,73,.035)}.card h3{margin:.25rem 0 .45rem;line-height:1.25}.card p{color:var(--muted);margin-bottom:0}
.page-shell{display:grid;grid-template-columns:minmax(0,820px) 290px;gap:28px;align-items:start}.article{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:44px 38px}
.article h1{font-size:clamp(2.15rem,5vw,3.55rem);line-height:1.08;letter-spacing:-.045em;margin:.5rem 0 1rem}.article h2{font-size:1.65rem;line-height:1.2;margin-top:2.15em;letter-spacing:-.02em}.article h3{font-size:1.18rem;margin-top:1.6em}.article p,.article li{color:#34485d}.lede{font-size:1.18rem;color:#40566c!important}.crumbs{font-size:.86rem;color:#6b7d90;margin-bottom:18px}.badge{display:inline-block;background:#e6f8f3;color:#115c4e;padding:6px 10px;border-radius:999px;font-weight:800;font-size:.8rem}
.sidebar{position:sticky;top:88px}.sidebox{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:16px}.sidebox h3{margin:0 0 7px;font-size:1.08rem}.sidebox p,.sidebox li{font-size:.91rem;color:#596c7e}.sidebox .btn{display:block;text-align:center;margin:12px 0 7px}
.callout{background:#eefaf7;border-left:4px solid var(--mint);padding:18px 20px;border-radius:8px;margin:28px 0}.note{background:var(--warn);border-left:4px solid #d5aa42;padding:16px 19px;border-radius:8px;margin:24px 0}
table{border-collapse:collapse;width:100%;margin:24px 0;font-size:.94rem}th,td{border:1px solid var(--line);padding:11px;text-align:left;vertical-align:top}th{background:var(--soft)}
.toc{background:#f5f9fc;border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin:24px 0}.toc strong{display:block;margin-bottom:6px}.toc a{display:block;margin:4px 0}
.author{border-top:1px solid #e3eaf1;padding-top:18px;margin-top:40px;color:#63778a;font-size:.9rem}
footer{background:var(--nav);color:#a9bfd3;padding:38px 0;margin-top:58px}footer .footergrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}footer a{color:#d7e8f7}.small{font-size:.88rem;color:#687b8d}
@media(max-width:940px){.page-shell{grid-template-columns:1fr}.sidebar{position:static;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.sidebox{margin:0}}
@media(max-width:780px){.navlinks a:not(.aff){display:none}.grid{grid-template-columns:1fr}.hero{padding-top:52px}.article{border-left:0;border-right:0;border-radius:0;padding:30px 21px}.sidebar{grid-template-columns:1fr}footer .footergrid{grid-template-columns:1fr}.nav{padding-left:0;padding-right:0}.navlinks{margin-left:auto}}