.tdq-page{background:#f4f6f8;padding:28px 16px 50px;min-height:72vh}.tdq-shell{max-width:1180px;margin:0 auto}.tdq-header{background:#fff;border:1px solid #e3e8ee;border-radius:16px;padding:24px 28px;margin-bottom:16px;box-shadow:0 5px 18px rgba(17,24,39,.05)}.tdq-kicker{font-size:12px;font-weight:600;letter-spacing:.08em;color:#3568d4;margin-bottom:8px}.tdq-header h1{font-size:clamp(25px,3vw,35px);line-height:1.25;margin:0;color:#1f2933}.tdq-meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:14px;color:#596574;font-size:14px}.tdq-meta span{display:inline-flex;align-items:center;gap:4px}.tdq-critical-meta{color:#b42318;font-weight:600}.tdq-warning{background:#fff8e8;border:1px solid #f0d48a;color:#6a5415;border-radius:12px;padding:14px 18px;margin-bottom:16px;line-height:1.55}.tdq-empty{background:#fff;border:1px solid #e3e8ee;border-radius:14px;padding:28px}.tdq-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}.tdq-main{background:#fff;border:1px solid #e3e8ee;border-radius:16px;padding:24px 28px;box-shadow:0 5px 18px rgba(17,24,39,.05)}.tdq-progress-row{display:flex;align-items:center;gap:14px;color:#5c6672;font-size:14px;padding-bottom:18px;border-bottom:1px solid #edf0f3;margin-bottom:22px}.tdq-progress{height:7px;background:#edf0f3;border-radius:99px;overflow:hidden;flex:1}.tdq-progress span{display:block;height:100%;width:0;background:#3568d4;border-radius:99px;transition:width .2s ease}.tdq-question{min-height:330px}.tdq-question-heading{display:flex;align-items:center;gap:9px;margin-bottom:12px}.tdq-question-badge{font-size:13px;font-weight:600;color:#fff;background:#3568d4;border-radius:999px;padding:6px 11px}.tdq-critical-badge{font-size:12px;font-weight:600;color:#b42318;background:#ffebe9;border-radius:999px;padding:6px 10px}.tdq-question-text{font-size:21px;line-height:1.55;color:#202a35;margin:0 0 20px}.tdq-question-image{text-align:center;margin:12px 0 22px}.tdq-question-img{max-width:100%;max-height:470px;width:auto;height:auto;border-radius:10px;object-fit:contain}.tdq-options{display:grid;gap:11px}.tdq-option{display:flex;align-items:flex-start;gap:12px;border:1px solid #dde3e9;border-radius:12px;padding:13px 14px;cursor:pointer;background:#fff;transition:.15s ease;position:relative}.tdq-option:hover{border-color:#9db5eb;box-shadow:0 3px 10px rgba(53,104,212,.08)}.tdq-option:has(input:checked){border-color:#3568d4;background:#f5f8ff;box-shadow:0 0 0 2px rgba(53,104,212,.08)}.tdq-option input{position:absolute;opacity:0;pointer-events:none}.tdq-option-key{width:31px;height:31px;display:grid;place-items:center;border-radius:50%;background:#edf1f6;color:#344150;font-weight:600;flex:0 0 31px}.tdq-option:has(input:checked) .tdq-option-key{background:#3568d4;color:#fff}.tdq-option-body{display:grid;gap:9px;min-width:0;flex:1}.tdq-option-text{font-size:16px;line-height:1.55;color:#2c3743;padding-top:3px}.tdq-answer-image{display:block}.tdq-answer-img{max-width:100%;max-height:300px;width:auto;height:auto;border-radius:8px;object-fit:contain}.tdq-option.is-correct-answer{border-color:#28a745;background:#f0fbf3}.tdq-option.is-correct-answer .tdq-option-key{background:#28a745;color:#fff}.tdq-option.is-selected-wrong{border-color:#dc3545;background:#fff4f4}.tdq-option.is-selected-wrong .tdq-option-key{background:#dc3545;color:#fff}.tdq-explanation{margin-top:16px;padding:12px 14px;background:#f7f8fa;border-radius:10px;color:#4b5563;font-size:14px;line-height:1.55}.tdq-nav{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #edf0f3;margin-top:26px;padding-top:18px}.tdq-btn{appearance:none;border:0;border-radius:10px;padding:11px 18px;font-weight:600;font-size:14px;cursor:pointer}.tdq-btn:disabled{opacity:.45;cursor:not-allowed}.tdq-btn-primary{background:#3568d4;color:#fff}.tdq-btn-muted{background:#edf1f5;color:#344150}.tdq-sidebar{position:sticky;top:22px;display:grid;gap:14px}.tdq-timer-box,.tdq-palette-box{background:#fff;border:1px solid #e3e8ee;border-radius:14px;padding:18px;box-shadow:0 5px 18px rgba(17,24,39,.05)}.tdq-timer-label{text-align:center;color:#687381;font-size:13px;margin-bottom:5px}.tdq-timer{text-align:center;font-size:34px;font-weight:600;letter-spacing:.03em;color:#1f2933;font-variant-numeric:tabular-nums}.tdq-timer.is-warning{color:#c0392b}.tdq-palette-head{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;margin-bottom:14px;color:#26313d}.tdq-palette-head span{font-size:12px;color:#6b7683;white-space:nowrap}.tdq-palette{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.tdq-palette-item{height:39px;border:1px solid #dde3e9;background:#fff;border-radius:8px;font-weight:600;color:#44505d;cursor:pointer}.tdq-palette-item.is-answered{background:#e9f0ff;border-color:#7c9ee8;color:#2852b1}.tdq-palette-item.is-current{box-shadow:0 0 0 2px #3568d4 inset;border-color:#3568d4}.tdq-palette-item.is-correct{background:#dff5e5;border-color:#5abc72;color:#166c2a}.tdq-palette-item.is-wrong{background:#ffe5e5;border-color:#e88181;color:#a61b1b}.tdq-legend{display:grid;gap:7px;margin-top:14px;font-size:12px;color:#687481}.tdq-legend span{display:flex;align-items:center;gap:7px}.tdq-legend i{width:14px;height:14px;border-radius:4px;border:1px solid #d8dde3;background:#fff;display:inline-block}.tdq-legend i.is-current{box-shadow:0 0 0 2px #3568d4 inset;border-color:#3568d4}.tdq-legend i.is-answered{background:#e9f0ff;border-color:#7c9ee8}.tdq-submit{width:100%;border:0;background:#e53935;color:#fff;border-radius:12px;padding:15px 16px;font-size:17px;font-weight:600;cursor:pointer;box-shadow:0 6px 16px rgba(229,57,53,.18)}.tdq-submit:hover{filter:brightness(.96)}.tdq-submit:disabled{opacity:.65;cursor:not-allowed}.tdq-result{margin-top:18px;background:#fff;border-radius:16px;padding:24px;border:1px solid #e3e8ee;text-align:center}.tdq-result.is-pass{border-color:#7cc78d;background:#f5fff7}.tdq-result.is-fail{border-color:#e79a9a;background:#fff7f7}.tdq-result.is-incomplete{border-color:#e2c66e;background:#fffaf0}.tdq-result-title{font-size:23px;font-weight:600;margin-bottom:6px}.tdq-result-score{font-size:18px;margin-bottom:6px}.tdq-result-score strong{font-size:30px}.tdq-result-message{font-size:15px;color:#4d5966}.tdq-result-sub{font-size:13px;color:#707b87;margin-top:8px}.tdq-retry{margin-top:14px;border:0;background:#26313d;color:#fff;border-radius:9px;padding:10px 16px;font-weight:600;cursor:pointer}@media(max-width:900px){.tdq-layout{grid-template-columns:1fr}.tdq-sidebar{position:static;grid-template-columns:1fr 1fr}.tdq-palette-box{grid-column:1/-1}.tdq-submit{grid-column:1/-1}.tdq-main{padding:20px}.tdq-question{min-height:0}}@media(max-width:600px){.tdq-page{padding:12px 9px 30px}.tdq-header{padding:18px}.tdq-header h1{font-size:23px}.tdq-main{padding:16px}.tdq-question-text{font-size:18px}.tdq-option{padding:11px}.tdq-option-text{font-size:15px}.tdq-sidebar{grid-template-columns:1fr}.tdq-palette-box,.tdq-submit{grid-column:auto}.tdq-palette{grid-template-columns:repeat(5,1fr)}.tdq-nav{position:sticky;bottom:0;background:#fff;padding:12px 0 2px;z-index:3}.tdq-btn{padding:11px 13px}.tdq-timer{font-size:29px}}


/* Question palette: circular buttons and scroll after the first 30 questions. */
.tdq-palette-item{width:40px;height:40px;min-width:40px;padding:0;border-radius:50%;justify-self:center;display:grid;place-items:center;line-height:1}
.tdq-palette.is-scrollable{max-height:280px;overflow-y:auto;overflow-x:hidden;align-content:start;padding:2px 8px 2px 2px;scrollbar-gutter:stable}
.tdq-palette.is-scrollable::-webkit-scrollbar{width:7px}
.tdq-palette.is-scrollable::-webkit-scrollbar-track{background:#f0f2f5;border-radius:999px}
.tdq-palette.is-scrollable::-webkit-scrollbar-thumb{background:#b8c1cc;border-radius:999px}
.tdq-palette.is-scrollable::-webkit-scrollbar-thumb:hover{background:#929eab}
@media(max-width:600px){.tdq-palette.is-scrollable{max-height:280px}}

/* 2.0.1: prevent mobile browser scroll anchoring from jumping to the submit area when changing questions. */
.tdq-main,.tdq-question,.tdq-nav{overflow-anchor:none}.tdq-question{scroll-margin-top:96px}

/* 2.3.8: Đố Vui Đố Mẹo — hiển thị toàn bộ câu hỏi theo danh sách dọc. */
.tdq-page--fun{padding-top:24px}
.tdq-page--fun .tdq-fun-shell{max-width:920px}
.tdq-page--fun .tdq-fun-header{margin-bottom:18px}
.tdq-page--fun .tdq-fun-meta{margin-top:12px}
.tdq-page--fun .tdq-fun-intro{margin:16px 0 0;padding:14px 16px;border-radius:12px;background:#f5f8ff;color:#445164;line-height:1.65}
.tdq-page--fun .tdq-app--fun{display:block}
.tdq-page--fun .tdq-fun-list{display:grid;gap:16px}
.tdq-page--fun .tdq-question--fun{min-height:0;padding:23px 25px;border:1px solid #e1e6ed;border-radius:16px;background:#fff;box-shadow:0 5px 18px rgba(17,24,39,.045)}
.tdq-page--fun .tdq-question--fun .tdq-question-heading{margin-bottom:13px}
.tdq-page--fun .tdq-question--fun .tdq-question-text{margin-bottom:17px;font-size:19px}
.tdq-page--fun .tdq-question--fun .tdq-options{gap:10px}
.tdq-page--fun .tdq-question--fun .tdq-option{padding:12px 13px}
.tdq-page--fun .tdq-fun-submit-area{margin-top:20px;padding:24px;border:1px solid #dfe5ec;border-radius:16px;background:#fff;box-shadow:0 8px 24px rgba(17,24,39,.055);text-align:center}
.tdq-page--fun .tdq-fun-submit-copy{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px;text-align:left}
.tdq-page--fun .tdq-fun-submit-copy strong{display:block;margin-bottom:4px;color:#1f2933;font-size:18px}
.tdq-page--fun .tdq-fun-submit-copy span{color:#667281;font-size:14px}
.tdq-page--fun .tdq-fun-submit-copy b{color:#3568d4;font-size:21px;font-variant-numeric:tabular-nums}
.tdq-page--fun .tdq-fun-submit{min-height:54px;font-size:18px}
.tdq-page--fun .tdq-fun-submit-area small{display:block;margin-top:11px;color:#778290;font-size:13px;line-height:1.55}
.tdq-page--fun .tdq-result{margin-top:16px}
@media(max-width:600px){
  .tdq-page--fun{padding:10px 9px 30px}
  .tdq-page--fun .tdq-fun-header{padding:18px 16px}
  .tdq-page--fun .tdq-fun-list{gap:12px}
  .tdq-page--fun .tdq-question--fun{padding:18px 15px;border-radius:14px}
  .tdq-page--fun .tdq-question--fun .tdq-question-text{font-size:17px;line-height:1.55}
  .tdq-page--fun .tdq-fun-submit-area{padding:19px 15px}
  .tdq-page--fun .tdq-fun-submit-copy{align-items:flex-start;flex-direction:column;gap:8px}
  .tdq-page--fun .tdq-fun-submit{min-height:52px;font-size:17px}
}