:root{
  --brand:#2f5f82;--brand-dark:#18364a;--accent:#d7a64b;--ink:#17212b;--muted:#5f6f7b;--paper:#ffffff;--soft:#f3f7fa;--line:#dce6ec;--wrap:1680px;--radius:22px;--shadow:0 18px 45px rgba(21,45,64,.10);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial, Helvetica, sans-serif;color:var(--ink);background:linear-gradient(180deg,#f7fbfd 0%,#eef5f8 45%,#fff 100%);line-height:1.65;font-size:17px}
a{color:#235d86;text-decoration-thickness:.08em;text-underline-offset:.17em}a:hover{color:#123e5e}.wrap{width:min(var(--wrap),calc(100% - 48px));margin-inline:auto}.skip{position:absolute;left:-999px;top:auto}.skip:focus{left:16px;top:16px;background:#fff;padding:10px 14px;border:2px solid var(--brand);z-index:20}
.header{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 0}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-weight:800}.mark{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--brand),#65a4c9);display:grid;place-items:center;box-shadow:0 10px 20px rgba(47,95,130,.22)}.brand small{display:block;font-weight:700;color:var(--muted);font-size:12px;letter-spacing:.04em;text-transform:uppercase}.nav{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.nav a{text-decoration:none;color:#21313d;font-weight:700;padding:8px 11px;border-radius:999px}.nav a:hover,.nav a[aria-current="page"]{background:#e8f1f6;color:#143b57}.hero{padding:64px 0 32px}.hero-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(340px,.8fr);gap:28px;align-items:stretch}.hero-card,.panel,.article-card,.callout,.toc,.notice{background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-card{padding:42px}.eyebrow{color:var(--brand);font-weight:800;text-transform:uppercase;letter-spacing:.08em;font-size:13px}h1,h2,h3{line-height:1.2;margin:0 0 14px}h1{font-size:clamp(36px,5vw,68px);letter-spacing:-.045em}h2{font-size:clamp(26px,3vw,42px);letter-spacing:-.03em;margin-top:34px}h3{font-size:23px;margin-top:26px}p{margin:0 0 17px}.lead{font-size:clamp(19px,2vw,24px);color:#344a59;max-width:1000px}.hero-aside{padding:28px;display:grid;gap:18px}.stat{padding:18px;border-radius:18px;background:#f4f8fb;border:1px solid var(--line)}.stat strong{display:block;font-size:28px;color:var(--brand-dark)}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-weight:800;padding:12px 17px;border-radius:999px;background:var(--brand);color:white}.btn.secondary{background:#fff;color:var(--brand-dark);border:1px solid var(--line)}.section{padding:36px 0}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.article-card{padding:22px;display:flex;flex-direction:column;gap:10px}.article-card h2,.article-card h3{margin:0;font-size:23px;letter-spacing:-.02em}.article-card p{color:#526575}.tag{display:inline-flex;width:max-content;border-radius:999px;padding:4px 9px;background:#edf4f7;color:#28506a;font-size:13px;font-weight:800}.panel{padding:30px}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:28px;align-items:start}.content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:42px;min-width:0}.content ul,.content ol{padding-left:24px}.content li{margin-bottom:8px}.toc{padding:20px;position:sticky;top:92px}.toc h2{font-size:20px;margin-top:0}.toc a{display:block;padding:7px 0;text-decoration:none;border-bottom:1px solid #edf2f5;color:#29485d}.callout{padding:22px;background:#f7fafc}.notice{padding:18px;background:#fffaf0;border-color:#ead7a4}.byline{display:flex;flex-wrap:wrap;gap:10px;color:#61717d;font-size:15px;margin:14px 0 24px}.related-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:12px}.related-list a{display:block;border:1px solid var(--line);border-radius:16px;padding:14px;text-decoration:none;background:#f8fbfc;font-weight:800}.breadcrumbs{font-size:14px;color:#627482;margin-bottom:18px}.breadcrumbs a{color:#3f6b84;text-decoration:none}.footer{margin-top:44px;background:#132838;color:#d7e6ee;padding:38px 0}.footer a{color:#fff}.footer-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:24px}.footer p{color:#c5d5de}.fine{font-size:14px;color:#7b8a94}.faq-item{border-bottom:1px solid var(--line);padding:20px 0}.faq-item h2{font-size:24px;margin-top:0}@media (max-width:980px){.hero-grid,.content-layout,.footer-grid,.grid,.grid.two{grid-template-columns:1fr}.toc{position:static}.hero-card,.content{padding:28px}.nav{font-size:15px}}@media (max-width:560px){.wrap{width:min(var(--wrap),calc(100% - 28px))}body{font-size:16px}.topbar{align-items:flex-start;flex-direction:column}.hero{padding-top:36px}.related-list{grid-template-columns:1fr}}