:root{
  --bg:#f7f7f4;
  --paper:#ffffff;
  --ink:#171717;
  --muted:#66645f;
  --line:#e7e2d8;
  --accent:#1d4f91;
  --accent-dark:#153a6b;
  --danger:#8a1f1f;
  --ok:#1f6b43;
  --soft:#eef4fb;
  --warning:#fff3d8;
  --radius:18px;
  --shadow:0 12px 30px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1120px,calc(100% - 32px));margin:auto}
.skip-link{
  position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden;
}
.skip-link:focus{
  left:16px;top:16px;width:auto;height:auto;background:#fff;padding:10px 14px;border:2px solid var(--accent);z-index:9999
}
.site-header{
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(12px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0;
}
.logo{
  display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);
}
.logo-mark{
  display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--accent);color:#fff;
  font-weight:900;
}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 11px}
.nav{display:flex;align-items:center;gap:18px;font-size:15px}
.nav a{color:var(--ink)}
.nav a.cta{background:var(--accent);color:white;padding:9px 13px;border-radius:999px}
.hero{
  padding:72px 0 46px;
  background:
    radial-gradient(circle at 80% 15%, rgba(29,79,145,.16), transparent 30%),
    linear-gradient(180deg,#fff 0%,var(--bg) 100%);
}
.eyebrow{
  display:inline-flex;gap:8px;align-items:center;
  background:var(--soft);border:1px solid #dce8f8;color:var(--accent-dark);
  border-radius:999px;padding:6px 12px;font-weight:700;font-size:14px
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}
h1,h2,h3{line-height:1.18;margin:0 0 14px}
h1{font-size:clamp(36px,6vw,64px);letter-spacing:-.04em}
h2{font-size:clamp(28px,4vw,42px);letter-spacing:-.03em}
h3{font-size:22px}
.lead{font-size:20px;color:#343331;margin:18px 0 26px}
.hero-card,.card,.notice,.toc,.quote-box{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)
}
.hero-card{padding:26px}
.hero-card ul{padding-left:20px;margin:12px 0 0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 17px;border-radius:999px;font-weight:800;border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-secondary{background:#fff;color:var(--ink);border-color:var(--line)}
.section{padding:54px 0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{padding:22px}
.card.bad{border-left:5px solid var(--danger)}
.card.good{border-left:5px solid var(--ok)}
.card h3{margin-bottom:8px}
.kicker{color:var(--accent-dark);font-weight:800;text-transform:uppercase;letter-spacing:.08em;font-size:13px}
.notice{padding:20px;background:var(--warning);border-color:#f0d99e}
.page-hero{padding:54px 0 30px;background:#fff;border-bottom:1px solid var(--line)}
.content-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:28px;align-items:start}
.toc{padding:18px;position:sticky;top:88px}
.toc strong{display:block;margin-bottom:8px}
.toc a{display:block;padding:6px 0;color:var(--ink)}
.article{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)
}
.article p{margin:0 0 16px}
.article ul,.article ol{margin:0 0 20px;padding-left:24px}
.article section{padding:18px 0;border-bottom:1px solid var(--line)}
.article section:last-child{border-bottom:0}
.badge{
  display:inline-block;font-size:13px;border-radius:999px;padding:4px 9px;background:var(--soft);color:var(--accent-dark);font-weight:800
}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px;margin:18px 0;background:#fff}
table{border-collapse:collapse;width:100%;min-width:680px}
th,td{border-bottom:1px solid var(--line);padding:13px;text-align:left;vertical-align:top}
th{background:#f3f5f8}
tr:last-child td{border-bottom:0}
.quote-box{padding:22px;background:#fbfbfb}
.footer{
  padding:36px 0;background:#111;color:#f3f3f3;margin-top:40px
}
.footer a{color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:22px}
.small{font-size:14px;color:#bbb}
hr{border:0;border-top:1px solid var(--line);margin:24px 0}
.checklist li{margin-bottom:9px}
.warning-list li strong{color:var(--danger)}
.good-list li strong{color:var(--ok)}
@media(max-width:860px){
  .hero-grid,.content-layout,.grid-2,.grid-3,.footer-grid{grid-template-columns:1fr}
  .nav-toggle{display:inline-flex}
  .nav{
    display:none;position:absolute;right:16px;top:66px;background:#fff;border:1px solid var(--line);
    border-radius:16px;padding:16px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;width:min(320px,calc(100% - 32px))
  }
  .nav.open{display:flex}
  .toc{position:static}
}