:root{--navy:#0b2a67;--blue:#174ea6;--red:#d62828;--yellow:#ffd23f;--white:#fff;--ink:#172033;--muted:#637083;--bg:#f5f7fb;--line:#dde3ee;--green:#1f8a5b;--shadow:0 16px 40px rgba(9,35,83,.12)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}a{color:var(--blue);text-decoration:none}img{max-width:100%}.container{width:min(1120px,calc(100% - 32px));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:linear-gradient(90deg,var(--navy),#123c8c);color:#fff;box-shadow:0 5px 20px rgba(0,0,0,.16)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:72px}.brand{display:flex;gap:12px;align-items:center;color:#fff}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--yellow);color:var(--navy);font-size:22px;box-shadow:0 0 0 4px rgba(255,255,255,.14)}.brand strong,.brand small{display:block}.brand small{font-size:11px;opacity:.8;letter-spacing:.04em}.main-nav{display:flex;align-items:center;gap:18px}.main-nav>a{color:#fff;font-weight:700;font-size:14px}.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:28px}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:12px 18px;font-weight:800;cursor:pointer;transition:.2s;box-shadow:none}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--blue);color:#fff}.btn-red{background:var(--red);color:#fff}.btn-yellow{background:var(--yellow);color:var(--navy)}.btn-light{background:#fff;color:var(--navy)}.btn-outline{background:transparent;border:1px solid var(--line);color:var(--ink)}.btn-small{padding:8px 12px;border-radius:9px;font-size:13px}.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#071d49 0%,#0d3b8e 65%,#1463ba 100%);color:#fff;padding:70px 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a{display:block;color:#dce8ff;padding:11px 12px;border-radius:9px;margin:4px 0;font-weight:700}.admin-sidebar a:hover{background:rgba(255,255,255,.1)}.admin-main{padding:28px;min-width:0}.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.admin-stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.admin-stat strong{font-size:30px;display:block;color:var(--navy)}.actions{display:flex;gap:7px;flex-wrap:wrap}.inline-form{display:inline}.certificate{max-width:1000px;margin:30px auto;background:#fff;border:14px double var(--navy);padding:55px;text-align:center;position:relative}.certificate:before{content:"★";position:absolute;left:25px;top:20px;color:var(--yellow);font-size:36px}.certificate h1{font-family:Georgia,serif;font-size:50px;color:var(--navy);margin:10px}.certificate-name{font-family:Georgia,serif;font-size:38px;color:var(--red);border-bottom:2px solid var(--line);display:inline-block;padding:0 30px}.certificate-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;margin-top:55px}.signature{border-top:1px solid #333;padding-top:8px}.only-print{display:none}@media(max-width:850px){.hero-grid,.grid-3,.grid-2,.quiz-layout,.footer-grid,.admin-stats{grid-template-columns:1fr}.hero-card{transform:none}.main-nav{display:none;position:absolute;left:0;right:0;top:72px;background:var(--navy);padding:18px;flex-direction:column;align-items:stretch}.main-nav.open{display:flex}.nav-toggle{display:block}.form-grid{grid-template-columns:1fr}.quiz-sidebar{position:static}.admin-shell{display:block}.admin-sidebar{height:auto;position:static}.admin-sidebar nav{display:flex;overflow:auto}.admin-sidebar a{white-space:nowrap}.admin-main{padding:18px}.cta{display:block}}@media print{.site-header,.site-footer,.no-print,.flash-stack{display:none!important}body{background:#fff}.certificate{margin:0;border-width:10px;min-height:95vh;display:flex;flex-direction:column;justify-content:center}.only-print{display:block}}