.topic-test-page{background:#f7fbff}.topic-test-hero{padding:20px 0 38px;background:radial-gradient(circle at 86% 12%,rgba(21,126,192,.16),transparent 30%),linear-gradient(180deg,#f1f9ff,#fff)}
.topic-test-hero__grid{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:34px;align-items:end}.topic-test-hero h1{max-width:900px;margin:12px 0 15px;font-size:clamp(2rem,4vw,3.7rem)}.topic-test-hero .lead{max-width:820px;color:#3b5e79;line-height:1.65}.topic-score-card{display:grid;gap:8px;padding:26px;border:1px solid #b8d9ee;border-radius:24px;background:rgba(255,255,255,.96);box-shadow:var(--shadow-sm)}.topic-score-card strong{font-size:4rem;line-height:.9;color:var(--primary-dark)}.topic-score-card span{color:var(--muted);font-weight:800}.topic-score-card a{margin-top:10px;color:var(--primary-dark);font-weight:800;text-decoration:underline;text-underline-offset:3px}.topic-progress{position:sticky;top:86px;z-index:90;margin-top:24px;padding:13px 17px;border:1px solid #b9d8ea;border-radius:16px;background:rgba(255,255,255,.96);box-shadow:var(--shadow-sm);backdrop-filter:blur(10px)}.topic-progress__top{display:flex;justify-content:space-between;gap:18px;align-items:center}.topic-progress__track{height:7px;margin-top:9px;overflow:hidden;border-radius:999px;background:#dbeaf4}.topic-progress__track span{width:0;height:100%;display:block;background:linear-gradient(90deg,#157ec0,#20a66b);transition:width .2s}.topic-test-form{padding:36px 0 80px}.topic-part-heading{margin:42px 0 20px}.topic-part-heading h2{margin:0;font-size:clamp(1.7rem,3.4vw,2.8rem)}.topic-task{margin-bottom:18px;padding:clamp(22px,3.5vw,34px);border:1px solid var(--line);border-left:5px solid var(--primary);border-radius:22px;background:#fff;box-shadow:var(--shadow-sm)}.topic-task>header{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:17px}.topic-task>header span{color:var(--primary-dark);font-weight:900;font-size:1.08rem}.topic-task>header small{padding:5px 10px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-weight:800}.topic-task>p{max-width:940px;color:#304f68;font-size:1.03rem}.topic-options{display:grid;gap:9px;margin-top:18px}.topic-option{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border:1px solid #c8dbe8;border-radius:12px;background:#fbfdff;cursor:pointer}.topic-option:hover{border-color:#88b8d5}.topic-option input{margin-top:3px;accent-color:var(--primary)}.topic-numeric{display:block;width:min(100%,300px);min-height:49px;margin-top:17px;padding:10px 13px;border:1px solid #abc7da;border-radius:11px;background:#fff;color:var(--ink)}.topic-numeric:focus{border-color:var(--primary);outline:3px solid rgba(21,126,192,.14)}.topic-answer{margin-top:19px;padding:15px 17px;border-radius:13px;background:#eff7fc}.topic-answer b{display:block;color:var(--primary-dark)}.topic-answer p{margin:7px 0 0;color:var(--muted);font-size:.91rem}.topic-task.is-correct{border-color:#62be89;background:#fbfffc}.topic-task.is-incorrect{border-color:#dc9696;background:#fffafa}.topic-task.is-correct .topic-answer{background:#eaf8f0}.topic-task.is-incorrect .topic-answer{background:#fff0f0}.topic-submit{display:flex;justify-content:center;margin:34px 0 18px}.topic-submit .button{min-width:min(100%,390px);min-height:56px}.topic-result{margin-top:28px;padding:clamp(28px,5vw,50px);border:1px solid #a9d4ee;border-radius:28px;background:#fff;box-shadow:var(--shadow);text-align:center}.topic-result__score{display:flex;justify-content:center;align-items:end;gap:10px;margin:18px 0}.topic-result__score strong{font-size:clamp(4rem,9vw,7rem);line-height:.82;color:var(--primary-dark)}.topic-result__score span{padding-bottom:8px;color:var(--muted);font-weight:800}.topic-result .cta-row{justify-content:center}.topic-clear{padding:0;border:0;background:transparent;color:var(--muted);text-decoration:underline;cursor:pointer}
html[data-theme="dark"] .topic-test-page{background:#081722}html[data-theme="dark"] .topic-test-hero{background:radial-gradient(circle at 86% 12%,rgba(74,164,218,.14),transparent 29%),linear-gradient(180deg,#0b2130,#081722)}html[data-theme="dark"] .topic-test-hero .lead,html[data-theme="dark"] .topic-task>p{color:var(--muted)}html[data-theme="dark"] .topic-score-card,html[data-theme="dark"] .topic-progress,html[data-theme="dark"] .topic-task,html[data-theme="dark"] .topic-numeric,html[data-theme="dark"] .topic-result{border-color:var(--line);background:var(--surface)}html[data-theme="dark"] .topic-progress{background:rgba(16,36,49,.96)}html[data-theme="dark"] .topic-progress__track{background:#294657}html[data-theme="dark"] .topic-option{border-color:var(--line);background:#122838}html[data-theme="dark"] .topic-answer{background:#153245}html[data-theme="dark"] .topic-task.is-correct{border-color:#3d805a;background:#102d20}html[data-theme="dark"] .topic-task.is-incorrect{border-color:#8a4d4d;background:#301c1c}
@media(max-width:900px){.topic-test-hero__grid{grid-template-columns:1fr}.topic-score-card{max-width:520px}}@media(max-width:760px){.topic-test-hero{padding:12px 0 30px}.topic-progress{top:76px;margin-inline:12px}.topic-task{border-radius:17px}.topic-numeric{width:100%}}@media(max-width:480px){.topic-progress__top{align-items:flex-start;flex-direction:column;gap:4px}.topic-task{padding:21px 17px}}

/* v37: error-only solution review */
.topic-solution{margin-top:10px}.topic-solution h4{margin:0 0 8px;color:var(--primary-dark);font-size:.98rem}.topic-solution p{margin:7px 0;line-height:1.6}.topic-result__errors{max-width:760px;margin:0 auto 18px;color:var(--muted)}.topic-task.is-incorrect .topic-answer:not([hidden]){animation:topicAnswerIn .18s ease-out}@keyframes topicAnswerIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}