body,html{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif}nav{gap:12px;padding:12px}main{max-width:calc(100% - 16px);margin:24px auto;padding:0 8px;width:100%}@media (min-width:640px){main{max-width:calc(100% - 32px);padding:0 16px}}@media (min-width:1024px){main{max-width:1200px;padding:0 24px}}@media (min-width:1536px){main{max-width:1400px}}a{text-decoration:none}:root{--bg:#0f172a;--card:#111827;--text:#e5e7eb;--muted:#9ca3af;--primary:#38bdf8;--good:#22c55e;--bad:#ef4444}body{background:var(--bg);color:var(--text)}header{background:rgba(15,23,42,.8);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid #1f2937;position:-webkit-sticky;position:sticky;top:0;z-index:50}nav{display:flex;align-items:center;gap:24px;padding:0 8px;height:64px;max-width:calc(100% - 16px);margin:0 auto;width:100%}@media (min-width:640px){nav{padding:0 16px;max-width:calc(100% - 32px)}}@media (min-width:1024px){nav{padding:0 24px;max-width:1200px}}@media (min-width:1536px){nav{max-width:1400px}}.nav-brand{font-weight:800;font-size:20px;color:var(--primary);text-decoration:none;display:flex;align-items:center;gap:8px;transition:opacity .2s}.nav-brand:hover{opacity:.8}.nav-links{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}.nav-links::-webkit-scrollbar{display:none}.nav-item{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:8px;font-size:14px;font-weight:500;white-space:nowrap;transition:all .2s}.nav-item:hover{color:var(--text);background:hsla(0,0%,100%,.05)}.nav-item.active{color:#0f172a;background:var(--primary)}.grid{display:grid;grid-template-columns:1fr;grid-gap:16px;gap:16px}@media (min-width:900px){.grid{grid-template-columns:1fr 1fr}}.card{background:var(--card);border:1px solid #1f2937;border-radius:12px;overflow:hidden}.card-title{padding:12px 16px;border-bottom:1px solid #1f2937;font-size:14px;color:var(--muted)}.card-body{padding:16px}.options{list-style:none;padding:0;margin:0}.options li{padding:8px;border-radius:8px}.opt-selected{background:#0b1220}.opt-correct{background:rgba(34,197,94,.15)}.card-actions{display:flex;gap:12px;align-items:center;margin-top:12px}button{background:var(--primary);color:#0b1220;border:none;padding:8px 12px;border-radius:8px;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.badge-correct{color:var(--good);font-weight:600}.badge-wrong{color:var(--bad);font-weight:600}input,select,textarea{background:#0b1220;color:var(--text);border:1px solid #1f2937;border-radius:8px;padding:6px 8px}section{max-width:100%}section>div:not(.certs-wrapper){padding:0 8px;max-width:calc(100% - 16px);margin-left:auto;margin-right:auto}@media (min-width:640px){section>div:not(.certs-wrapper){padding:0 16px;max-width:calc(100% - 32px)}}@media (min-width:1024px){section>div:not(.certs-wrapper){max-width:1200px;padding:0 24px}}@media (min-width:1536px){section>div:not(.certs-wrapper){max-width:1400px}}.notice-container{padding:10px 8px!important;max-width:calc(100% - 16px)!important;margin-left:auto!important;margin-right:auto!important}@media (min-width:640px){.notice-container{padding:10px 16px!important;max-width:calc(100% - 32px)!important}}@media (min-width:1024px){.notice-container{max-width:1200px!important;padding:10px 24px!important}}@media (min-width:1536px){.notice-container{max-width:1400px!important}}.footer-container{padding:0 8px!important;max-width:calc(100% - 16px)!important;margin-left:auto!important;margin-right:auto!important}@media (min-width:640px){.footer-container{padding:0 16px!important;max-width:calc(100% - 32px)!important}}@media (min-width:1024px){.footer-container{max-width:1200px!important;padding:0 24px!important}}@media (min-width:1536px){.footer-container{max-width:1400px!important}}.certs-grid{display:grid;grid-gap:20px;gap:20px;margin-bottom:40px;width:calc(100% - 32px);margin-left:16px;margin-right:16px}.certs-grid>div{width:100%;height:100%}.certs-section-wrapper{margin:0 auto;width:100%;max-width:100%;padding:0}.certs-wrapper{text-align:center;margin-bottom:40px;padding:0;width:100%;margin-left:0;margin-right:0}@media (min-width:640px){.certs-grid{width:calc(100% - 48px);margin-left:24px;margin-right:24px}}@media (min-width:1024px){.certs-grid{width:calc(100% - 48px);margin-left:24px;margin-right:24px}}@media (max-width:640px){.certs-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:641px) and (max-width:1024px){.certs-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:1025px){.certs-grid{grid-template-columns:repeat(6,minmax(0,1fr))}}@keyframes fade{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade{animation:fade .4s ease-out forwards}