.full-layout{max-width:1500px}.model-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:12px}.model-card{display:block;background:#fff;border:1px solid #dfe6f3;border-radius:16px;padding:20px;text-align:start;min-height:130px;color:#17234a}.model-card strong{display:block;font-size:18px;margin:8px 0}.model-card small{display:block;color:#69788e}.model-card:hover{border-color:#5366ec;background:#f9faff}.exam-topbar{position:sticky;z-index:5;top:0;display:flex;gap:10px;align-items:center;flex-wrap:wrap;background:#fff;border:1px solid #dee5f0;border-radius:15px;padding:10px 12px;margin-bottom:12px;box-shadow:0 5px 22px #1b23490a}.exam-title{flex:1;min-width:130px}.exam-title strong{display:block;font-size:15px}.exam-title small{display:block;font-size:12px;color:#6a7890;margin-top:4px}.exam-timer{padding:12px;border:1px solid #d8def5;border-radius:10px;color:#2b3eac;font:800 18px/1.2 ui-monospace,monospace;white-space:nowrap;direction:ltr}.exam-timer.warning{color:#b34142;background:#fff0ee}.model-workspace{display:grid;grid-template-columns:180px minmax(0,1fr) 180px;gap:12px;align-items:start}.model-nav,.model-answers,.exam-paper{border:1px solid #e1e6f0;border-radius:14px;background:#fff}.model-nav,.model-answers{padding:15px;position:sticky;top:85px}.model-nav h2,.model-answers h2{font-size:17px;margin:0 0 12px}.model-nav button{display:block;background:#f0f4fd;color:#17234a;width:100%;margin-bottom:7px;text-align:start}.model-nav button.active{background:#5265eb;color:#fff}.model-nav button span{display:block;font-size:11px;opacity:.78}.model-nav p{font-size:12px;color:#7c6880;line-height:1.6}.exam-paper{padding:24px;min-width:0}.section-heading{border-bottom:2px solid #e3e8f4;padding-bottom:10px;margin-bottom:20px}.section-heading small{font-weight:800;color:#5265eb}.section-heading h2{font-size:22px;margin:6px 0 0}.reading-passage{font-size:15px;line-height:1.9;white-space:pre-line;color:#17234a;padding:18px;background:#fcfcfd;border:1px solid #e1e7f2;border-radius:12px;margin-bottom:20px;overflow-wrap:anywhere}.model-question{border-top:1px solid #e1e6ef;padding:18px 0;scroll-margin-top:105px}.model-question h3{font-size:15px;font-weight:700;line-height:1.6;margin:5px 0 14px}.model-question .q-number{font-size:12px;font-weight:900;color:#5265eb}.model-options{display:flex;flex-wrap:wrap;gap:7px}.model-options button{background:#f7f9fd;border:1px solid #dbe2ef;color:#1d2a44;text-align:start;font-weight:600;padding:11px;font-size:13px}.model-options button.selected{background:#e8ecff;border-color:#5265eb;color:#3145bc}.model-options button.key{background:#e5f7ee;border-color:#178363;color:#136644}.model-options button.wrong{background:#fff0f0;border-color:#b24d5b;color:#9b3040}.model-options button:disabled{opacity:1;cursor:default}.answer-note{font-size:12px;color:#146a53;margin-top:10px}.part-bottom{display:flex;justify-content:space-between;gap:10px;margin-top:20px}.model-answers #answerGrid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.model-answers #answerGrid button{padding:9px 3px;background:#eef1f7;color:#1b2947;border:1px solid #d7dfeb;font-size:12px}.model-answers #answerGrid button.answered{background:#5265eb;color:#fff}.model-answers #answerGrid button.correct{background:#c9f0df;color:#07583e}.model-answers #answerGrid button.wrong{background:#ffe3e2;color:#8e253a}.model-answers #answerGrid button.focused{outline:3px solid #ffbc4d;outline-offset:1px}.model-answers p{font-size:13px;color:#5a697f;line-height:1.7}.model-answers .result-text{font-weight:800;font-size:16px;color:#1a6a56}.exam-timer.warning{border-color:#d98e82}@media(max-width:1060px){.model-workspace{grid-template-columns:140px minmax(0,1fr)}.model-answers{grid-column:1/-1;position:static}.model-answers #answerGrid{grid-template-columns:repeat(10,minmax(0,1fr))}.model-nav{top:84px}}@media(max-width:650px){.full-layout{padding:12px}.intro{padding:15px}.model-workspace{display:block}.model-nav{position:static;margin-bottom:12px}.model-nav #partButtons{display:flex;flex-wrap:wrap;gap:6px}.model-nav button{width:auto;margin:0}.exam-paper{padding:15px;margin-bottom:12px}.model-answers #answerGrid{grid-template-columns:repeat(6,minmax(0,1fr))}.exam-timer{font-size:14px;padding:8px}.exam-topbar{top:0}.exam-topbar #submitAll{order:5;width:100%}.exam-title strong{font-size:13px}.reading-passage{padding:12px;font-size:14px}.section-heading h2{font-size:19px}}