.exam-head{background:#071b31;color:#fff;padding:12px 18px;position:sticky;top:0;z-index:50;box-shadow:0 3px 12px rgba(0,0,0,.16)}.exam-head .inner{display:flex;align-items:center;justify-content:space-between;gap:14px}.exam-timer{display:flex;align-items:center;gap:10px;background:#fff;color:#071b31;border:3px solid #ff9b34;border-radius:12px;padding:7px 14px;min-width:170px;justify-content:center;box-shadow:0 2px 10px rgba(0,0,0,.18)}.exam-timer .timer-label{font-size:12px;font-weight:900;color:#5d6b78}.exam-timer strong{font-size:25px;line-height:1;letter-spacing:1px;color:#e66e00;font-variant-numeric:tabular-nums}.exam-timer.urgent{border-color:#e54d4d;background:#fff2f2}.exam-timer.urgent strong{color:#d93636}.sample-banner{padding:10px 20px;background:#fff2e7;color:#a34e05;text-align:center;font-size:12px;font-weight:800}.exam-layout{max-width:1200px;margin:24px auto;display:grid;grid-template-columns:1fr 260px;gap:18px;padding:0 18px}.question,.side{background:#fff;border:1px solid #dce3eb;border-radius:12px;padding:25px}.qno{color:#1768d5;font-weight:800}.qtext{font-size:20px;font-weight:700;line-height:1.6;margin:15px 0}.qtext img,.choice img{max-width:100%;height:auto}.qtext p,.choice p{margin:.35em 0}.choices{display:grid;gap:10px}.choice{display:flex;align-items:center;gap:8px;border:1px solid #dce3eb;padding:14px;border-radius:8px;cursor:pointer}.choice-number{flex:0 0 24px;min-width:24px;text-align:right;font-weight:700;align-self:center}.choice-content{min-width:0;flex:1;display:flex;align-items:center;min-height:42px}.choice-content img{display:block;vertical-align:middle}.choice.selected{border-color:#1768d5;background:#edf5ff}.qnav{display:flex;justify-content:space-between;margin-top:25px}.numbers{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin:15px 0}.numbers button{padding:8px;border:1px solid #dce3eb;background:#fff;color:#333}.numbers button.done{background:#dff5f2}.numbers button.now{background:#071b31;color:#fff}.secondary{background:#dfe5ec;color:#334}.danger{background:#e45b5b}.media img{max-width:100%;max-height:350px}.media audio{width:100%;margin:12px 0}.score{text-align:center;max-width:700px;margin:auto}.score>strong{font-size:64px;color:#16a69a}.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:25px 0}.summary div{background:#f3f6fa;padding:15px}.summary b{display:block;font-size:24px}@media(max-width:800px){.exam-layout{grid-template-columns:1fr}.side{order:-1}.summary{grid-template-columns:1fr}}

@media(max-width:600px){.exam-head{padding:9px 10px}.exam-head .inner>b{font-size:13px;max-width:48%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.exam-timer{min-width:138px;padding:6px 9px;gap:7px}.exam-timer .timer-label{font-size:11px}.exam-timer strong{font-size:21px}}