:root{--blue:#0b5ed7;--blue2:#084298;--ink:#172033;--muted:#64748b;--bg:#f4f7fb;--card:#fff;--line:#dbe4ef;--ok:#15803d;--bad:#b91c1c;--radius:22px}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}button{font:inherit}.topbar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(22px,calc((100vw - 1180px)/2));position:sticky;top:0;z-index:20}.brand{color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:11px;font-weight:850;font-size:20px}.brandmark{display:grid;place-items:center;width:40px;height:40px;border-radius:13px;background:var(--blue);color:#fff;font-size:15px}.badge{font-size:12px;font-weight:800;background:#eaf2ff;color:var(--blue2);padding:8px 11px;border-radius:999px}.hero{max-width:1180px;margin:0 auto;padding:72px 22px 45px;display:grid;grid-template-columns:1.35fr .65fr;gap:36px;align-items:center}.eyebrow{font-size:12px;letter-spacing:.14em;font-weight:900;color:var(--blue)}h1{font-size:clamp(38px,5vw,67px);line-height:1.02;letter-spacing:-.045em;margin:12px 0 20px;max-width:850px}.hero-copy>p{font-size:19px;line-height:1.65;color:var(--muted);max-width:760px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}.btn{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:14px;padding:13px 18px;font-weight:800;cursor:pointer;box-shadow:0 1px 1px #00000008}.btn:hover{transform:translateY(-1px)}.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}.mini-stats{display:flex;gap:24px;margin-top:22px}.mini-stats div{display:flex;flex-direction:column}.mini-stats strong{font-size:26px}.mini-stats span{font-size:13px;color:var(--muted)}.hero-card{background:#0f172a;color:#fff;border-radius:30px;padding:34px;box-shadow:0 22px 60px #17203324}.hero-card .signal{width:58px;height:58px;border-radius:18px;background:#22c55e;display:grid;place-items:center;font-size:28px;font-weight:900}.hero-card h2{font-size:27px;margin:22px 0 10px}.hero-card p{color:#cbd5e1;line-height:1.6}.status{margin-top:24px;background:#1e293b;border-radius:12px;padding:11px 13px;font-size:13px}.status.ok{color:#86efac}.status.warn{color:#fde68a}.quiz,.result{max-width:900px;margin:28px auto 60px;padding:0 20px}.quiz-head{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;margin-bottom:14px}.linkbtn{border:0;background:transparent;color:var(--blue);font-weight:800;cursor:pointer}.progress-wrap{height:8px;background:#dce6f3;border-radius:20px;overflow:hidden}.progress{height:100%;background:var(--blue);width:0;transition:width .25s}.question-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:0 14px 36px #17203312}.q-meta{display:flex;gap:8px;color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.question-card h2{font-size:clamp(22px,3vw,31px);line-height:1.25;margin:14px 0 22px}.media{background:#eef3f8;border-radius:16px;overflow:hidden;display:flex;justify-content:center;min-height:210px}.media img{width:100%;max-height:470px;object-fit:contain}.answers{display:grid;gap:11px;margin-top:20px}.answer{width:100%;text-align:left;border:2px solid var(--line);background:#fff;border-radius:15px;padding:15px 16px;display:flex;gap:13px;align-items:flex-start;cursor:pointer;font-weight:650;line-height:1.4}.answer .letter{flex:0 0 30px;height:30px;border-radius:9px;background:#edf2f7;display:grid;place-items:center;font-weight:900}.answer.selected{border-color:var(--blue);background:#f0f6ff}.answer.correct{border-color:#22c55e;background:#f0fdf4}.answer.wrong{border-color:#ef4444;background:#fef2f2}.feedback{margin-top:16px;border-radius:14px;padding:14px 16px;font-weight:700}.feedback.ok{background:#ecfdf5;color:var(--ok)}.feedback.bad{background:#fef2f2;color:var(--bad)}.nav{display:flex;justify-content:space-between;margin-top:22px}.hidden{display:none!important}.result{background:#fff;border:1px solid var(--line);border-radius:26px;text-align:center;padding:42px 30px;box-shadow:0 14px 40px #17203310}.result-icon{margin:auto;width:76px;height:76px;border-radius:50%;display:grid;place-items:center;font-size:38px;font-weight:900}.result-icon.pass{background:#dcfce7;color:#15803d}.result-icon.fail{background:#fee2e2;color:#b91c1c}.result h2{font-size:36px;margin:14px 0 8px}.result>p{color:var(--muted)}.result-grid{display:grid;grid-template-columns:repeat(3,1fr);max-width:560px;margin:28px auto;gap:12px}.result-grid div{background:#f8fafc;border-radius:15px;padding:18px}.result-grid strong{display:block;font-size:30px}.result-grid span{font-size:12px;color:var(--muted)}.center{justify-content:center}.review-list{text-align:left;margin-top:28px;display:grid;gap:12px}.review-item{border:1px solid var(--line);border-radius:14px;padding:15px}.review-item strong{display:block;margin-bottom:7px}.review-item small{color:var(--muted)}.features{max-width:1180px;margin:15px auto 80px;padding:25px 22px}.features>h2{font-size:34px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.feature-grid article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.feature-grid b{color:var(--blue)}.feature-grid h3{font-size:20px}.feature-grid p{color:var(--muted);line-height:1.55}footer{text-align:center;padding:28px;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}@media(max-width:800px){.hero{grid-template-columns:1fr;padding-top:45px}.hero-card{padding:25px}.mini-stats{gap:15px}.question-card{padding:20px}.feature-grid{grid-template-columns:1fr}.topbar{height:64px}.badge{font-size:10px}.brand{font-size:17px}.result-grid{gap:7px}.result-grid div{padding:14px 8px}}