:root{--ink:#15241d;--muted:#69766f;--line:#dfe6e2;--paper:#f4f7f5;--card:#fff;--green:#0b7a4b;--green-dark:#075f3a;--green-soft:#e5f4ec;--red:#bc3f45;--red-soft:#fff0f0;--shadow:0 14px 40px rgba(25,51,38,.08)}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}button,input,select,textarea{font:inherit}.shell{width:min(100% - 32px,920px);margin:0 auto;padding:42px 0 70px}.shell--narrow{max-width:720px}.shell--quiz{max-width:820px}.shell--result{max-width:900px}.topbar{display:flex;align-items:center;gap:14px;margin-bottom:28px}.topbar h1{margin:1px 0 0;font-size:25px;line-height:1.2}.brand-mark{display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:var(--green);color:#fff;font-size:24px;font-weight:800}.eyebrow,.topic{text-transform:uppercase;letter-spacing:.09em;font-size:12px;font-weight:800;color:var(--green)}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}.card h2{margin:0 0 8px;font-size:25px}.muted,.quiz-note{color:var(--muted)}.stack{display:grid;gap:20px;margin-top:24px}label{display:grid;gap:8px;font-weight:700;font-size:14px}input,select,textarea{width:100%;border:1px solid #cbd5cf;border-radius:11px;padding:13px 14px;background:#fff;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(11,122,75,.11)}button,.button-link{display:inline-flex;justify-content:center;align-items:center;border:0;border-radius:11px;padding:13px 20px;background:var(--green);color:#fff;font-weight:800;text-decoration:none;cursor:pointer;transition:.15s}button:hover,.button-link:hover{background:var(--green-dark)}button:disabled{opacity:.55;cursor:wait}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.section-heading h2{margin:2px 0}.pill{white-space:nowrap;background:var(--green-soft);color:var(--green-dark);font-weight:800;font-size:13px;padding:7px 11px;border-radius:999px}.test-details{padding:16px;border-radius:13px;background:#f5f8f6}.test-details p{margin:0 0 10px}.stats{display:flex;flex-wrap:wrap;gap:18px;color:var(--muted);font-size:14px}.notice{padding:13px 15px;border-radius:11px;margin:0 0 16px}.notice--error{background:var(--red-soft);color:#8d292e;border:1px solid #f0ced0}.quiz-header{display:flex;justify-content:space-between;align-items:center;gap:20px}.progress-label{font-size:20px;font-weight:800;margin-top:3px}.timer{display:flex;align-items:center;gap:9px;padding:10px 15px;border-radius:12px;background:var(--green-soft);color:var(--green-dark);font-variant-numeric:tabular-nums;font-size:20px}.timer-dot{width:9px;height:9px;border-radius:50%;background:var(--green)}.timer--warning{background:var(--red-soft);color:var(--red)}.timer--warning .timer-dot{background:var(--red);animation:pulse .8s infinite}.progress{height:7px;margin:18px 0 24px;border-radius:99px;background:#dce4df;overflow:hidden}.progress div{height:100%;background:var(--green);transition:width .3s}.quiz-card{padding:36px}.quiz-card h2{margin:8px 0 28px;font-size:27px;line-height:1.35}.options{display:grid;gap:12px}.option{grid-template-columns:38px 1fr;align-items:center;gap:13px;border:1px solid var(--line);border-radius:14px;padding:14px 16px;cursor:pointer;font-weight:500;font-size:16px;transition:.12s}.option:hover{border-color:#96b9a6;background:#fafcfb}.option input{position:absolute;opacity:0;width:1px}.option-letter{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:#edf2ef;font-weight:800}.option--selected{border-color:var(--green);background:var(--green-soft)}.option--selected .option-letter{background:var(--green);color:#fff}.quiz-card button{margin-top:24px;min-width:145px}.form-error{min-height:22px;margin-top:10px;color:var(--red);font-size:14px;font-weight:700}.quiz-note{text-align:center;font-size:13px}.result-hero{display:flex;justify-content:space-between;align-items:center;gap:25px;padding:30px;border-radius:20px;margin-bottom:34px}.result-hero--pass{background:var(--green-soft)}.result-hero--fail{background:var(--red-soft)}.result-hero h2{font-size:30px;margin:4px 0}.result-hero p{margin:0;color:var(--muted)}.score-ring{display:grid;place-items:center;flex:0 0 130px;height:130px;border-radius:50%;background:#fff;box-shadow:var(--shadow)}.score-ring strong{font-size:32px;line-height:1;margin-top:22px}.score-ring span{font-size:13px;color:var(--muted);margin-top:-22px}.result-heading{margin-bottom:16px}.mistakes{display:grid;gap:14px}.mistake{display:grid;grid-template-columns:36px 1fr;gap:14px;padding:22px}.mistake-number{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--red-soft);color:var(--red);font-weight:900}.mistake h3{margin:2px 0 18px;font-size:18px}.mistake dl,.mistake dd{margin:0}.mistake dl{display:grid;gap:14px}.mistake dt{font-size:12px;text-transform:uppercase;letter-spacing:.06em;font-weight:800;color:var(--muted)}.mistake dd{margin-top:3px}.wrong{color:var(--red)}.correct{color:var(--green-dark);font-weight:700}.perfect{text-align:center}.perfect-icon{display:grid;place-items:center;margin:0 auto 14px;width:52px;height:52px;border-radius:50%;background:var(--green);color:#fff;font-size:28px}.button-link{margin-top:24px}.skeleton{color:var(--muted);padding:20px 0}@keyframes pulse{50%{opacity:.3}}
@media(max-width:640px){.shell{width:min(100% - 22px,920px);padding-top:22px}.card{padding:20px;border-radius:16px}.section-heading,.result-hero{align-items:flex-start}.section-heading{flex-direction:column}.quiz-card{padding:23px}.quiz-card h2{font-size:22px}.quiz-header{align-items:flex-end}.timer{font-size:17px;padding:8px 11px}.option{padding:12px;grid-template-columns:34px 1fr}.result-hero{flex-direction:column}.score-ring{align-self:center}.topbar h1{font-size:21px}}