:root{
  --ink:#10243e;--muted:#5d6d7e;--blue:#1f6feb;--sky:#eaf3ff;--navy:#0b1f38;
  --line:#dce6f1;--card:#ffffff;--bg:#f6f9fc;--green:#157347;--amber:#8a5a00;
  --radius:18px;--shadow:0 16px 40px rgba(13,37,63,.09);
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.72}
a{color:#1557b0;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:#0b3f88}
img{max-width:100%}
.wrap{width:min(1160px,92vw);margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:22px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:850;font-size:1.22rem;color:var(--navy);text-decoration:none;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#0f5fe6,#46a3ff);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:0 7px 18px rgba(31,111,235,.25)}
nav{display:flex;align-items:center;gap:18px;margin-left:auto}
nav a{color:#33475b;text-decoration:none;font-weight:650;font-size:.94rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border-radius:12px;padding:11px 16px;background:var(--blue);color:#fff!important;text-decoration:none;font-weight:800;border:1px solid var(--blue);box-shadow:0 6px 16px rgba(31,111,235,.16)}
.btn.secondary{background:#fff;color:var(--blue)!important}
.menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 11px;font-size:1.1rem}
.hero{padding:76px 0 50px;background:radial-gradient(circle at 80% 10%,#d9ecff 0,transparent 38%),linear-gradient(180deg,#fff,#f6f9fc)}
.eyebrow{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;font-weight:850;color:#1764c0}
h1{font-size:clamp(2.2rem,6vw,4.7rem);line-height:1.02;letter-spacing:-.045em;margin:.18em 0 .28em}
h2{font-size:clamp(1.55rem,3vw,2.25rem);line-height:1.15;letter-spacing:-.025em;margin:1.8em 0 .55em}
h3{font-size:1.24rem;line-height:1.25;margin:1.5em 0 .4em}
.lead{font-size:1.18rem;color:#41566d;max-width:760px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 8px 26px rgba(13,37,63,.05)}
.card h3{margin-top:0}.card p:last-child{margin-bottom:0}
.section{padding:42px 0}
.kicker{font-size:.82rem;font-weight:800;color:#1764c0}
.article-shell{display:grid;grid-template-columns:minmax(0,760px) 320px;gap:36px;align-items:start;padding:34px 0 70px}
article{background:#fff;border:1px solid var(--line);border-radius:22px;padding:clamp(24px,4vw,52px);box-shadow:var(--shadow)}
.article-title{font-size:clamp(2rem,5vw,3.45rem)}
.breadcrumbs{font-size:.87rem;color:#6a7888;margin-bottom:20px}
.breadcrumbs a{color:#5b6f85}
.dek{font-size:1.16rem;color:#50647a}
.meta{font-size:.86rem;color:#738196;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:28px}
.callout{border-left:4px solid var(--blue);background:var(--sky);padding:18px 20px;border-radius:0 14px 14px 0;margin:26px 0}
.callout.warn{border-left-color:#d79a16;background:#fff8e6}
.cta-box{background:linear-gradient(135deg,#0d2d53,#123e72);color:#fff;border-radius:18px;padding:25px;margin:30px 0;box-shadow:var(--shadow)}
.cta-box h3{margin-top:0;color:#fff}.cta-box p{color:#dce9f7}.cta-box .btn{background:#fff;border-color:#fff;color:#123e72!important}
.sidebar{position:sticky;top:96px}
.sidebox{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;margin-bottom:18px}
.sidebox h3{margin-top:0}.sidebox ul{padding-left:20px;margin-bottom:0}
.sidebox .btn{width:100%}
.checklist{list-style:none;padding:0}.checklist li{margin:.6em 0;padding-left:1.7em;position:relative}.checklist li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}
.compare{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;margin:24px 0;background:#fff}
.compare th,.compare td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}.compare th{background:#f2f7fc}.compare tr:last-child td{border-bottom:0}
.sourcebox{font-size:.9rem;background:#f8fafc;border:1px solid var(--line);padding:18px;border-radius:14px;margin-top:32px}
.sourcebox ul{margin-bottom:0}
.footer{background:#0b1f38;color:#cbd8e6;padding:42px 0 90px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.footer a{color:#e6eef7}.footer small{color:#9fb0c3}
.mobile-cta{display:none}
.tag{display:inline-block;border:1px solid #cfe0f5;background:#f3f8ff;color:#1a5ba6;border-radius:999px;padding:5px 9px;font-size:.78rem;font-weight:750;margin:2px}
.notice{font-size:.86rem;color:#5e6c7a}
@media(max-width:900px){
  nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;padding:18px 4vw;border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(0,0,0,.05)}
  nav.open{display:grid}.header-cta{display:none}.menu-btn{display:block;margin-left:auto}
  .article-shell{grid-template-columns:1fr}.sidebar{position:static}.grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}.mobile-cta{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:40;padding:10px 12px;background:rgba(11,31,56,.96);border-top:1px solid #264a70}
  .mobile-cta .btn{width:100%}
}