:root{
  --ink:#102131; --muted:#617386; --bg:#eef5fb; --panel:#ffffff; --line:#d8e5ef;
  --brand:#065c8f; --brand-dark:#023e68; --brand-soft:#dceef8; --accent:#f2a23a; --ok:#18785f;
  --danger:#a83838; --shadow:0 18px 45px rgba(10,42,70,.14); --radius:22px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:linear-gradient(180deg,#dff0fb 0,#f7fbfe 220px,var(--bg));color:var(--ink);line-height:1.65;font-size:17px} a{color:#055d93;text-decoration:none} a:hover{text-decoration:underline}.wrap{max-width:1240px;margin:0 auto;padding:0 18px}.skip{position:absolute;left:-999px;top:auto}.skip:focus{left:16px;top:16px;background:#fff;padding:10px 14px;border-radius:8px;z-index:20}.topbar{background:var(--brand-dark);color:#eaf7ff;font-size:14px}.topbar .wrap{display:flex;gap:14px;justify-content:space-between;align-items:center;padding-top:8px;padding-bottom:8px}.topbar a{color:#fff}.hero-header{background:linear-gradient(135deg,#033d68,#0673a8 58%,#0a8ab7);color:#fff;box-shadow:var(--shadow)}.brandline{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:24px 0}.logo{display:flex;align-items:center;gap:14px;color:#fff}.logo-mark{width:54px;height:54px;border-radius:17px;background:#fff;color:var(--brand-dark);display:grid;place-items:center;font-weight:900;font-size:22px;box-shadow:0 10px 25px rgba(0,0,0,.18)}.logo-text{display:grid;gap:5px}.logo-title{display:block;font-size:28px;line-height:1;font-weight:850;letter-spacing:-.02em}.logo-sub{display:block;font-size:14px;line-height:1.25;color:#d7eefc;margin-top:0}.cta-row{display:flex;gap:10px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:999px;border:1px solid transparent;font-weight:750;text-decoration:none;cursor:pointer}.btn:hover{text-decoration:none}.btn-primary{background:var(--accent);color:#1d2530}.btn-secondary{background:#fff;color:#064e7d}.btn-outline{border-color:#b7dced;color:#fff;background:rgba(255,255,255,.1)}.btn-dark{background:var(--brand-dark);color:#fff}.nav-shell{background:rgba(0,35,60,.28);border-top:1px solid rgba(255,255,255,.18)}.mainnav{display:flex;gap:4px;align-items:center;flex-wrap:wrap;padding:10px 0}.mainnav a,.dropbtn{color:#fff;padding:10px 12px;border-radius:11px;font-weight:650;font-size:15px;background:transparent;border:0;font:inherit;cursor:pointer}.mainnav a:hover,.drop:hover .dropbtn{background:rgba(255,255,255,.16);text-decoration:none}.drop{position:relative}.dropmenu{display:none;position:absolute;top:42px;left:0;background:#fff;color:var(--ink);border-radius:16px;box-shadow:var(--shadow);width:340px;max-height:420px;overflow:auto;padding:10px;z-index:10}.drop:hover .dropmenu{display:block}.dropmenu a{display:block;color:var(--ink);padding:9px 10px;border-radius:10px}.dropmenu a:hover{background:var(--brand-soft)}.hero{padding:44px 0 36px}.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:28px;align-items:center}.eyebrow{letter-spacing:.12em;text-transform:uppercase;font-weight:850;font-size:13px;color:#cdefff}.hero h1{font-size:clamp(36px,5vw,62px);line-height:1.02;margin:10px 0 14px;letter-spacing:-.04em}.hero p{font-size:20px;max-width:760px;color:#eef9ff}.hero-card{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.26);border-radius:var(--radius);padding:24px;backdrop-filter:blur(4px)}.hero-card h2{margin-top:0;color:#fff}.quick-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}.quick-list li{background:rgba(255,255,255,.12);border-radius:13px;padding:10px 12px}.site-grid{display:grid;grid-template-columns:250px minmax(0,1fr) 280px;gap:22px;padding:28px 0 50px}.panel,.content,.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 25px rgba(10,42,70,.07)}.leftcol,.rightcol{display:grid;gap:16px;align-content:start}.side-card{padding:18px}.side-card h3{margin:0 0 8px;font-size:18px}.side-card ul{padding-left:18px;margin:8px 0}.content{padding:34px;min-width:0}.content h1{font-size:clamp(32px,4vw,48px);line-height:1.08;margin:0 0 16px;letter-spacing:-.03em;color:#09273d}.content h2{font-size:28px;line-height:1.18;margin:32px 0 12px;color:#083b60}.content h3{font-size:22px;margin:24px 0 8px}.content p{margin:0 0 16px}.lead{font-size:20px;color:#344f65}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:22px 0}.card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:20px}.card h3{margin-top:0}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.checklist{list-style:none;padding:0;margin:16px 0}.checklist li{padding:9px 0 9px 30px;position:relative;border-bottom:1px solid #edf3f8}.checklist li:before{content:'✓';position:absolute;left:0;top:9px;color:var(--ok);font-weight:900}.tagcloud{display:flex;flex-wrap:wrap;gap:8px}.tag{background:var(--brand-soft);color:#074d78;border-radius:999px;padding:6px 10px;font-size:14px;font-weight:650}.notice{border-left:5px solid var(--accent);background:#fff7e8;border-radius:14px;padding:16px 18px;margin:22px 0}.safety{border-left-color:var(--danger);background:#fff1f1}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}label{font-weight:750}input,select,textarea{width:100%;border:1px solid #cbd9e3;border-radius:12px;padding:12px 13px;font:inherit;background:#fff}textarea{min-height:130px}.success{background:#e9f8f1;border:1px solid #b9e4cf;color:#0f5c43;border-radius:14px;padding:14px 16px}.error{background:#fff0f0;border:1px solid #efc1c1;color:#8a2525;border-radius:14px;padding:14px 16px}.lesson-nav{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.progress-box{background:#f4f9fd;border:1px solid var(--line);border-radius:18px;padding:18px}.certificate{border:8px double #1f5d81;border-radius:24px;padding:42px;text-align:center;background:#fff;margin:20px 0}.certificate h1{font-family:Georgia,serif}.footer{background:#062f4f;color:#d7ebf7;padding:34px 0;margin-top:30px}.footer a{color:#fff}.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:22px}.small{font-size:14px;color:#b9d4e5}.article-list{columns:2;column-gap:28px}.article-list li{break-inside:avoid;margin:0 0 8px}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:12px}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:10px;border-bottom:1px solid var(--line);text-align:left}.print-only{display:none}@media (max-width:1040px){.site-grid{grid-template-columns:1fr}.leftcol,.rightcol{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-grid{grid-template-columns:1fr}.card-grid{grid-template-columns:1fr 1fr}}@media (max-width:680px){body{font-size:16px}.brandline,.topbar .wrap{align-items:flex-start;flex-direction:column}.cta-row{width:100%}.btn{width:100%}.content{padding:22px}.card-grid,.two-col,.form-grid,.foot-grid,.leftcol,.rightcol{grid-template-columns:1fr}.article-list{columns:1}.dropmenu{position:static;width:100%;max-height:260px}.mainnav{display:block}.mainnav a,.dropbtn{display:block;width:100%;text-align:left}.hero{padding:28px 0}.hero h1{font-size:38px}}@media print{.topbar,.hero-header,.leftcol,.rightcol,.footer,.no-print,.breadcrumb{display:none!important}.site-grid{display:block}.content{box-shadow:none;border:0;padding:0}.certificate{display:block}.print-only{display:block}}