:root{--primary: #2563eb;--primary-hover: #1d4ed8;--primary-light: #eff5ff;--bg: #f8fafc;--surface: #ffffff;--text: #0f172a;--text-muted: #64748b;--border: #e2e8f0;--border-light: #f1f5f9;--success: #16a34a;--success-bg: #dcfce7;--warning: #d97706;--warning-bg: #fef3c7;--danger: #dc2626;--danger-bg: #fee2e2;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #93c5fd;outline-offset:2px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(1.7rem,3vw,2.25rem);letter-spacing:-.04em;font-weight:800}h2{letter-spacing:-.03em;font-size:1.25rem;font-weight:750}p{line-height:1.6}.shell{min-height:100vh;display:flex}.side{width:250px;flex-shrink:0;background:#fff;border-right:1px solid var(--border);padding:30px 18px;display:flex;flex-direction:column;gap:36px;position:sticky;top:0;height:100vh;overflow-y:auto}.logo{font-size:24px;font-weight:900;letter-spacing:-.05em;color:var(--text)}.logo span{color:var(--primary)}.side nav{display:grid;gap:8px}.side nav button{border:0;background:none;text-align:left;color:var(--text-muted);font-weight:700;padding:12px 14px;border-radius:11px;transition:all .15s ease;font-size:14px}.side nav button.active,.side nav button:hover{background:var(--primary-light);color:var(--primary)}.side-note{margin-top:auto;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:14px;padding:16px;color:#166534;font-weight:700;display:flex;flex-direction:column;gap:4px}.side-note small{display:block;color:#15803d;line-height:1.4;font-weight:400;font-size:12px}.main{min-width:0;flex:1}.main header{height:72px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 4%;position:sticky;top:0;z-index:10}.header-left span{color:var(--text-muted);font-weight:500;font-size:13px}.header-right{display:flex;align-items:center;gap:12px}.avatar{width:38px;height:38px;background:#dbeafe;color:#1d4ed8;border-radius:50%;display:grid;place-items:center;font-weight:800}.main main{max-width:1050px;margin:0 auto;padding:36px clamp(16px,4vw,48px) 100px}.tag{color:var(--primary);font-size:11px;font-weight:800;letter-spacing:.1em}.muted,.heading>p:last-child{color:var(--text-muted);font-size:14px}.heading{margin-bottom:24px}.heading h1{margin:8px 0 6px}.primary,.secondary{border-radius:10px;padding:12px 20px;min-height:44px;border:0;font-size:13px;font-weight:750;transition:all .15s ease}.primary{background:var(--primary);color:#fff}.primary:hover:not(:disabled){background:var(--primary-hover)}.secondary{background:#fff;color:#334155;border:1px solid var(--border)}.secondary:hover:not(:disabled){background:#f1f5f9}.full{width:100%}.link{border:0;background:transparent;color:var(--primary);font-weight:800;font-size:13px;padding:0}.panel{background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px;box-shadow:0 1px 3px #00000008}.fine{color:var(--text-muted);font-size:12px;line-height:1.6;margin:12px 0}.welcome{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;min-height:calc(100vh - 120px)}.welcome .logo{margin-bottom:60px}.welcome h1{font-size:clamp(34px,4.5vw,54px);line-height:1.15;margin:20px 0}.welcome h1 em{font-style:normal;color:var(--primary)}.welcome section>p:not(.tag):not(.fine){color:var(--text-muted);font-size:16px}.welcome .primary{margin-top:20px;padding:15px 28px;font-size:15px}.welcome-art{min-height:420px;border-radius:28px;background:linear-gradient(135deg,#dbeafe,#ede9fe);display:grid;place-items:center}.floating{background:#fff;box-shadow:0 20px 50px #2563eb26;border-radius:20px;padding:30px;width:78%;transform:rotate(-3deg)}.art-icon{font-size:34px;margin-bottom:14px}.floating small{color:var(--text-muted);font-size:11px;letter-spacing:.1em;font-weight:800}.floating h2{font-size:24px;line-height:1.3;margin:12px 0}.floating p{font-size:13px;color:var(--text-muted)}.progress{height:7px;background:#e2e8f0;border-radius:10px;overflow:hidden;margin:16px 0}.progress div{height:100%;background:var(--primary);border-radius:10px;transition:width .3s ease}.register{max-width:580px;margin:20px auto}.register>.link{margin-bottom:20px}.panel label{display:block;font-weight:800;font-size:13px;margin:20px 0 8px}.panel input,.panel select{width:100%;padding:12px 14px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:var(--text);font-size:14px}.subject-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.subject-grid button{border:1px solid var(--border);border-radius:10px;padding:14px;background:#fff;display:flex;justify-content:space-between;align-items:center;gap:8px;text-align:left;font-size:13px;font-weight:650;transition:all .15s ease}.subject-grid button.chosen{border-color:var(--primary);background:var(--primary-light);color:#1d4ed8}.banner{background:linear-gradient(115deg,#1d4ed8,#4f46e5);color:#fff;padding:32px;border-radius:20px;position:relative;overflow:hidden;margin-bottom:24px}.banner small{font-size:11px;letter-spacing:.1em;font-weight:800}.banner h2{font-size:clamp(22px,3vw,28px);line-height:1.3;margin:12px 0}.banner p{color:#e0e7ff;font-size:14px;max-width:500px;margin-bottom:20px}.banner button{border:0;background:#fff;color:#1d4ed8;border-radius:9px;padding:12px 20px;font-weight:800;font-size:13px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:30px}.stats>div{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px;display:grid;gap:6px}.stats small{color:var(--text-muted);font-size:12px;font-weight:600}.stats strong{font-size:24px;color:var(--text);font-weight:800}.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:30px}.cards button{border:1px solid var(--border);background:#fff;border-radius:14px;text-align:left;padding:22px;transition:all .15s ease;display:flex;flex-direction:column}.cards button:hover{border-color:#93c5fd;box-shadow:0 4px 12px #2563eb14}.cards b{font-size:16px;color:var(--text)}.cards p{color:var(--text-muted);font-size:13px;margin:10px 0 16px;flex:1}.cards span{color:var(--primary);font-size:13px;font-weight:800}.section-line{display:flex;justify-content:space-between;align-items:center;margin:28px 0 16px}.pills{display:flex;flex-wrap:wrap;gap:10px}.pills span{background:#fff;border:1px solid var(--border);border-radius:8px;padding:8px 14px;font-size:13px;font-weight:650;color:#334155}.history-table-container{overflow-x:auto;background:#fff;border:1px solid var(--border);border-radius:14px}.history-table{width:100%;border-collapse:collapse;text-align:left;font-size:13px}.history-table th,.history-table td{padding:14px 18px;border-bottom:1px solid var(--border-light)}.history-table th{background:#f8fafc;font-weight:750;color:var(--text-muted);font-size:12px}.badge-mode{padding:4px 8px;border-radius:6px;font-size:11px;font-weight:750}.badge-mode.mode-mock{background:#ede9fe;color:#6d28d9}.badge-mode.mode-topic{background:#fef3c7;color:#b45309}.badge-mode.mode-practice{background:#dbeafe;color:#1d4ed8}.modes{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}.modes button{background:#fff;border:2px solid var(--border);border-radius:14px;text-align:left;padding:18px;display:grid;gap:8px;transition:all .15s ease}.modes button.selected{border-color:var(--primary);background:var(--primary-light)}.modes button>span{font-size:26px}.modes button strong{font-size:15px}.modes button small{font-size:12px;color:var(--text-muted)}.practice-panel{max-width:600px;margin:0 auto}.info{background:var(--primary-light);color:#1d4ed8;border-radius:10px;padding:14px 16px;margin:18px 0;font-size:13px;line-height:1.5}.exam-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:16px}.exam-head h1{font-size:20px;margin:4px 0 0}.timer{background:#e0f2fe;color:#0369a1;border-radius:10px;padding:10px 16px;font-weight:800;font-size:16px;font-variant-numeric:tabular-nums;white-space:nowrap}.timer.urgent{background:var(--danger-bg);color:var(--danger);animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.75}}.exam-subject-tabs{display:flex;gap:8px;margin-bottom:16px;overflow-x:auto;padding-bottom:4px}.subj-tab{background:#fff;border:1px solid var(--border);border-radius:10px;padding:10px 16px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);white-space:nowrap;transition:all .15s ease}.subj-tab.active{background:var(--primary);border-color:var(--primary);color:#fff}.subj-count{background:#00000012;padding:2px 7px;border-radius:12px;font-size:11px;font-weight:800}.subj-tab.active .subj-count{background:#ffffff40;color:#fff}.exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:18px;align-items:start}.question-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px;font-weight:700;color:var(--text-muted)}.passage-panel{background:#f8fafc;border:1px solid #e2e8f0;border-left:4px solid var(--primary);border-radius:8px;padding:14px 18px;margin:16px 0}.passage-panel.mini{margin:10px 0;padding:10px 14px;font-size:13px}.passage-badge{font-size:11px;font-weight:800;color:var(--primary);letter-spacing:.08em;margin-bottom:8px}.passage-text{font-size:14px;line-height:1.6;color:#334155;margin:0}.question-text{font-size:18px;line-height:1.5;margin:16px 0 20px;font-weight:700}.options{display:grid;gap:10px}.options button{display:flex;align-items:center;gap:14px;border:1px solid var(--border);background:#fff;border-radius:12px;text-align:left;padding:14px;min-height:54px;transition:all .15s ease}.options button:hover{background:#f8fafc;border-color:#cbd5e1}.options button.picked{border-color:var(--primary);background:var(--primary-light)}.options b{background:#f1f5f9;border-radius:8px;width:32px;height:32px;display:grid;place-items:center;flex-shrink:0;font-size:13px;color:#475569}.options .picked b{background:var(--primary);color:#fff}.opt-text{font-size:14px;flex:1}.picked-check{color:var(--primary);font-weight:800}.question-actions{display:flex;justify-content:space-between;gap:10px;align-items:center;flex-wrap:wrap;margin-top:24px}.center-actions{display:flex;align-items:center;gap:10px}.flag{border:1px solid var(--border);background:#fff;color:var(--text-muted);font-weight:700;font-size:12px;padding:8px 14px;border-radius:8px;transition:all .15s ease}.flag.is-flagged{background:#fef9c3;color:#a16207;border-color:#fde047}.btn-bookmark-action{border:1px solid var(--border);background:#fff;color:var(--text-muted);font-weight:700;font-size:12px;padding:8px 12px;border-radius:8px;transition:all .15s ease}.btn-bookmark-action.is-bookmarked{background:#fef3c7;color:#b45309;border-color:#fcd34d}.shortcut-hint-pill{margin-top:18px;background:#f1f5f9;border-radius:8px;padding:9px 14px;font-size:12px;color:#475569}.shortcut-hint-pill b{background:#fff;border:1px solid #cbd5e1;padding:1px 5px;border-radius:4px;font-size:11px}.palette{position:sticky;top:90px}.palette-filters{display:flex;gap:4px;margin:12px 0;background:#f1f5f9;padding:3px;border-radius:8px}.filter-btn{flex:1;border:0;background:transparent;padding:6px 4px;border-radius:6px;font-size:11px;font-weight:700;color:var(--text-muted)}.filter-btn.active{background:#fff;color:var(--primary);box-shadow:0 1px 2px #0000000d}.palette .numbers{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin:14px 0;max-height:280px;overflow-y:auto;padding-right:2px}.numbers button{aspect-ratio:1;border:1px solid var(--border);background:#fff;border-radius:8px;font-weight:750;font-size:12px;color:#475569;transition:all .15s ease}.numbers button.answered{background:var(--success-bg);border-color:#86efac;color:var(--success)}.numbers button.current{outline:2px solid var(--primary);outline-offset:1px}.numbers button.flagged{border-bottom:4px solid #eab308}.palette-legend{display:flex;gap:12px;font-size:11px;color:var(--text-muted);margin-bottom:12px}.legend-box{display:inline-block;width:10px;height:10px;border-radius:2px;vertical-align:middle;margin-right:4px}.legend-box.answered{background:var(--success-bg);border:1px solid var(--success)}.legend-box.flagged{background:#fff;border-bottom:3px solid #eab308;border:1px solid #cbd5e1}.legend-box.unans{background:#fff;border:1px solid #cbd5e1}.palette-summary{font-size:12px;color:var(--text-muted);margin-bottom:14px}.btn-submit-exam{background:#fef2f2;color:#dc2626;border-color:#fecaca}.btn-submit-exam:hover{background:#fee2e2}.calculator-modal-container{position:fixed;bottom:24px;right:24px;z-index:50;animation:slideUp .2s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.calculator-widget{width:260px;background:#1e293b;color:#fff;border-radius:16px;padding:16px;box-shadow:0 10px 30px #00000059;border:1px solid #334155}.calc-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.calc-title{font-size:12px;font-weight:750;color:#94a3b8;display:flex;align-items:center;gap:6px}.calc-close{border:0;background:transparent;color:#94a3b8;font-size:14px;padding:0}.calc-display{background:#0f172a;border-radius:8px;padding:12px 14px;font-size:24px;font-family:monospace;text-align:right;margin-bottom:12px;overflow-x:auto;min-height:52px;display:flex;align-items:center;justify-content:flex-end;color:#38bdf8}.calc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.calc-btn{aspect-ratio:1;border:0;background:#334155;color:#fff;border-radius:8px;font-size:15px;font-weight:700;display:grid;place-items:center;transition:all .1s ease}.calc-btn:hover{background:#475569}.calc-btn.btn-op{background:#2563eb}.calc-btn.btn-op:hover{background:#1d4ed8}.calc-btn.btn-danger{background:#dc2626}.calc-btn.btn-equals{grid-column:span 2;aspect-ratio:auto;background:#16a34a}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172aa6;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:grid;place-items:center;padding:20px;z-index:60}.dialog{background:#fff;border-radius:18px;padding:28px;max-width:440px;width:100%;box-shadow:0 20px 40px #0003}.dialog h2{font-size:20px;margin-bottom:10px}.shortcuts-dialog{max-width:480px}.shortcuts-list{list-style:none;padding:0;margin:18px 0;display:grid;gap:10px}.shortcuts-list li{font-size:13px;display:flex;align-items:center;gap:10px}kbd{background:#f1f5f9;border:1px solid #cbd5e1;border-radius:6px;padding:3px 8px;font-family:inherit;font-weight:800;font-size:12px;box-shadow:0 1px 1px #0000001a}.result{text-align:center;padding:36px 24px}.medal{font-size:44px;margin-bottom:8px}.utme-score-banner{background:#f8fafc;border:1px solid var(--border);border-radius:16px;padding:28px 20px;margin:20px auto;max-width:600px}.utme-big-score{display:flex;align-items:baseline;justify-content:center;gap:6px}.score-val{font-size:64px;font-weight:900;color:var(--primary);line-height:1}.score-denom{font-size:24px;color:var(--text-muted);font-weight:700}.utme-tier-pill{display:inline-block;padding:6px 14px;border-radius:20px;font-size:12px;font-weight:800;margin:14px 0}.utme-advice{font-size:14px;color:#475569;margin-bottom:20px}.utme-breakdown-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;text-align:left}.utme-subj-card{background:#fff;border:1px solid var(--border);border-radius:10px;padding:12px 14px;display:grid;gap:4px}.utme-subj-card small{color:var(--text-muted);font-weight:700;font-size:11px}.utme-subj-card strong{font-size:18px;color:var(--text)}.utme-subj-card span{font-size:11px;color:#64748b}.score{width:160px;height:160px;border:12px solid #dceaff;border-top-color:var(--primary);border-right-color:var(--primary);border-radius:50%;margin:24px auto;display:grid;align-content:center}.score strong{font-size:40px;color:var(--primary)}.score small{color:var(--text-muted)}.result-stats{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;color:var(--text-muted);font-size:13px;margin-top:14px}.reviews{display:grid;gap:14px}.review-card{text-align:left}.review-answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;background:#f8fafc;padding:12px 16px;border-radius:10px;font-size:13px;margin:14px 0 0}.review-answer-grid p{margin:0}.correct{color:var(--success)!important}.incorrect{color:var(--danger)!important}.options-static{display:grid;gap:8px;margin-top:14px}.opt-static-item{display:flex;align-items:center;gap:12px;padding:10px 14px;background:#f8fafc;border:1px solid var(--border);border-radius:8px;font-size:13px}.opt-static-item.is-correct-static{background:var(--success-bg);border-color:#86efac}.opt-static-item b{background:#fff;width:26px;height:26px;display:grid;place-items:center;border-radius:6px;font-size:12px}.presets-box{background:#f1f5f9;border-radius:12px;padding:14px;margin:16px 0}.presets-title{display:block;font-weight:800;font-size:11px;color:var(--text-muted);letter-spacing:.08em;margin-bottom:8px}.presets-buttons{display:flex;flex-wrap:wrap;gap:8px}.preset-btn{background:#fff;border:1px solid var(--border);border-radius:8px;padding:7px 12px;font-size:12px;font-weight:700;color:#334155;transition:all .15s ease}.preset-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}.subject-selection-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-top:18px}.subject-selection-head label{margin:0}.btn-view-curriculum{font-size:12px;text-decoration:underline}.chosen-tags-bar{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 16px;min-height:36px}.chosen-tag{background:#dbeafe;color:#1e40af;border-radius:20px;padding:5px 12px;font-size:12px;font-weight:750;display:inline-flex;align-items:center;gap:8px}.chosen-tag button{border:0;background:transparent;color:#1e40af;padding:0;font-size:12px;font-weight:800}.subject-filters-bar{margin-bottom:14px;display:grid;gap:10px}.subject-search-input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:13px}.subject-category-pills{display:flex;flex-wrap:wrap;gap:6px}.cat-pill{border:1px solid var(--border);background:#fff;border-radius:20px;padding:5px 12px;font-size:11px;font-weight:700;color:var(--text-muted);transition:all .15s ease}.cat-pill.active{background:var(--primary);border-color:var(--primary);color:#fff}.btn-guide-toggle{background:#f8fafc;color:#2563eb;border-color:#bfdbfe;font-size:12px;padding:8px 14px;border-radius:8px}.btn-side-guide{background:#eff6ff!important;color:#1d4ed8!important;border:1px dashed #93c5fd!important;margin-top:6px;text-align:left}.syllabus-modal{max-width:680px;max-height:85vh;display:flex;flex-direction:column;overflow:hidden;padding:24px}.syllabus-modal-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:16px}.syllabus-modal-header h2{font-size:18px;margin:0}.syllabus-modal-body{overflow-y:auto;padding-right:6px;margin-bottom:18px}.syllabus-modal-body h3{font-size:15px;margin:18px 0 8px;color:#1e293b}.curriculum-badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.cur-pill{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe;border-radius:6px;padding:4px 10px;font-size:11px;font-weight:800}.curriculum-table-container{overflow-x:auto;border:1px solid var(--border);border-radius:8px;margin:10px 0 16px}.curriculum-table{width:100%;border-collapse:collapse;font-size:12px}.curriculum-table th,.curriculum-table td{padding:10px 12px;border-bottom:1px solid var(--border-light);text-align:left;vertical-align:top}.curriculum-table th{background:#f8fafc;font-weight:750;color:var(--text-muted)}.all-subjects-summary{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:14px}.subj-category-block{background:#f8fafc;border:1px solid var(--border);border-radius:8px;padding:10px 12px}.subj-category-block h4{margin:0 0 4px;font-size:12px;color:#1e40af}.subj-category-block p{margin:0;font-size:11px;line-height:1.5;color:#475569}.syllabus-rules-list{padding-left:20px;margin:8px 0 16px;font-size:13px;line-height:1.6;color:#334155}.badge-offline{background:#dcfce7;color:#15803d;font-size:11px;font-weight:800;padding:3px 8px;border-radius:12px;margin-left:10px}.btn-side-activate{background:#fef3c7!important;color:#b45309!important;border:1px solid #fde68a!important;font-weight:800!important;margin-top:6px;text-align:left}.time-analytics-box{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px;margin:20px auto;max-width:600px;text-align:left}.time-analytics-box h3{font-size:15px;margin:0 0 12px;color:#1e293b}.time-stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.time-stats-grid>div{background:#f8fafc;border-radius:8px;padding:10px 12px;display:grid;gap:4px}.time-stats-grid small{color:var(--text-muted);font-size:11px}.time-stats-grid strong{font-size:15px;color:var(--text)}.btn-ask-tutor-pill{background:#ede9fe;color:#6d28d9;border:1px solid #ddd6fe;border-radius:20px;padding:4px 10px;font-size:11px;font-weight:750;transition:all .15s ease}.btn-ask-tutor-pill:hover{background:#ddd6fe}.ai-tutor-modal{max-width:640px;max-height:85vh;display:flex;flex-direction:column}.ai-tutor-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:14px}.ai-tutor-title{display:flex;align-items:center;gap:10px}.ai-tutor-title h2{font-size:17px;margin:0}.ai-tutor-title small{color:var(--text-muted);font-size:12px}.ai-tutor-body{overflow-y:auto;padding-right:4px;margin-bottom:16px;font-size:13px}.tutor-question-recap{background:#f8fafc;border-left:3px solid var(--primary);padding:10px 14px;border-radius:6px;margin-bottom:12px}.tutor-status-badge{padding:10px 14px;border-radius:8px;margin-bottom:14px;font-weight:650;font-size:13px}.status-correct{background:#dcfce7;color:#15803d;border:1px solid #bbf7d0}.status-incorrect{background:#fee2e2;color:#b91c1c;border:1px solid #fecaca}.tutor-nav-tabs{display:flex;gap:6px;background:#f1f5f9;padding:4px;border-radius:8px;margin-bottom:14px}.tutor-nav-tabs button{flex:1;border:0;background:transparent;padding:7px 4px;border-radius:6px;font-size:11px;font-weight:750;color:var(--text-muted)}.tutor-nav-tabs button.active{background:#fff;color:#6d28d9;box-shadow:0 1px 2px #0000000d}.tab-pane h4{font-size:14px;margin:0 0 8px;color:#1e293b}.correct-option-highlight{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:10px 14px;margin-top:12px;color:#166534}.options-distractor-list{display:grid;gap:8px;margin-top:10px}.distractor-item{padding:10px 12px;border-radius:8px;display:flex;flex-direction:column;gap:2px}.distractor-item.is-answer{background:#f0fdf4;border:1px solid #86efac}.distractor-item.is-distractor{background:#f8fafc;border:1px solid #e2e8f0}.rule-card{background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;padding:12px;margin-bottom:10px;color:#1e40af}.mnemonic-card{background:#fefce8;border:1px solid #fef08a;border-radius:8px;padding:12px;color:#854d0e}.aggregate-modal{max-width:650px;max-height:85vh;display:flex;flex-direction:column}.aggregate-modal-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:14px}.aggregate-modal-header h2{font-size:18px;margin:0}.aggregate-modal-body{overflow-y:auto;padding-right:4px;margin-bottom:16px}.agg-form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.olevel-grades-row{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:8px}.grade-selector-item{display:flex;flex-direction:column;gap:4px}.grade-selector-item small{font-size:11px;color:var(--text-muted)}.aggregate-result-card{background:#f8fafc;border:1px solid var(--border);border-radius:12px;padding:16px;margin-top:18px;display:flex;align-items:center;gap:20px}.agg-score-circle{width:90px;height:90px;background:#fff;border:6px solid var(--primary);border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;flex-shrink:0}.agg-score-circle strong{font-size:22px;color:var(--primary);line-height:1}.agg-score-circle small{font-size:10px;color:var(--text-muted)}.agg-details h3{font-size:15px;margin:0 0 4px;color:#1e293b}.benchmark-pills{display:flex;flex-wrap:wrap;gap:6px}.course-pill{background:#fff;border:1px solid #cbd5e1;border-radius:14px;padding:3px 10px;font-size:11px;font-weight:700;color:#334155}.activation-modal{max-width:480px}.activation-modal-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:14px}.activation-modal-header h2{font-size:18px;margin:0}.activation-price-tag{background:#f8fafc;border:1px solid var(--border);border-radius:12px;padding:16px;text-align:center;margin:14px 0;display:flex;flex-direction:column;align-items:center;gap:4px}.price-old{text-decoration:line-through;color:var(--text-muted);font-size:13px}.price-current{font-size:34px;color:#16a34a;line-height:1}.activation-price-tag small{color:var(--text-muted);font-size:12px}.activation-tabs{display:flex;gap:6px;margin:14px 0}.act-tab{flex:1;background:#fff;border:1px solid var(--border);border-radius:8px;padding:9px 8px;font-size:11px;font-weight:750;color:var(--text-muted)}.act-tab.active{background:#eff6ff;border-color:var(--primary);color:var(--primary)}.paystack-box{background:#f8fafc;border-radius:10px;padding:14px;text-align:center}.btn-paystack{background:#0ba4db;color:#fff;margin:10px 0}.btn-paystack:hover{background:#098bb9}.secure-badge{font-size:11px;color:var(--text-muted)}.voucher-form{display:grid;gap:10px}.app-footer{margin-top:48px;padding-top:24px;border-top:1px solid var(--border)}.disclaimer-card{background:#f8fafc;border:1px solid #e2e8f0;border-left:4px solid #64748b;border-radius:8px;padding:14px 18px;font-size:12px;line-height:1.6;color:#475569}.disclaimer-card strong{display:block;margin-bottom:4px;color:#334155}.disclaimer-card p{margin:0}.footer-meta{text-align:center;font-size:12px;color:var(--text-muted);margin-top:14px}.mobile-nav{display:none}html{-webkit-text-size-adjust:100%}button{-webkit-tap-highlight-color:transparent;touch-action:manipulation}input,select{font-size:16px}.ios-guide-modal{max-width:520px;width:92%;max-height:90vh;overflow-y:auto;border-radius:20px}.ios-guide-body{margin:16px 0;display:flex;flex-direction:column;gap:12px}.ios-steps-list{display:flex;flex-direction:column;gap:10px}.ios-step-card{display:flex;align-items:flex-start;gap:12px;background:#f8fafc;border:1px solid var(--border);border-radius:12px;padding:12px 14px}.ios-step-card .step-num{width:28px;height:28px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;flex-shrink:0}.ios-step-card strong{display:block;font-size:14px;color:var(--text);margin-bottom:2px}.ios-step-card p{margin:0;font-size:12px;color:var(--text-muted);line-height:1.4}.ios-prompt-banner{background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff;border-radius:12px;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;box-shadow:0 4px 12px #0f172a26;gap:12px}.ios-prompt-banner .banner-text{font-size:13px}.ios-prompt-banner strong{display:block;font-size:14px;color:#60a5fa}.ios-prompt-banner button{background:#2563eb;color:#fff;border:none;border-radius:8px;padding:8px 14px;font-size:12px;font-weight:700;white-space:nowrap}@media(max-width:900px){.side{width:210px}.exam-layout{grid-template-columns:1fr}.palette{order:-1;position:static}.palette .numbers{grid-template-columns:repeat(10,1fr)}}@media(max-width:680px){.side{display:none}.main header{min-height:64px;height:auto;padding:max(8px,env(safe-area-inset-top)) 16px 8px}.main main{padding:24px 16px calc(95px + env(safe-area-inset-bottom))}.welcome{grid-template-columns:1fr;gap:24px}.welcome .logo{margin-bottom:30px}.welcome h1{font-size:38px}.welcome-art{min-height:260px}.floating{padding:20px;transform:none}.stats{grid-template-columns:repeat(2,1fr)}.cards,.modes,.review-answer-grid,.utme-breakdown-grid{grid-template-columns:1fr}.palette .numbers{grid-template-columns:repeat(8,1fr)}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--border);justify-content:space-around;padding:12px 8px max(12px,env(safe-area-inset-bottom));z-index:20}.mobile-nav button{border:0;background:none;color:var(--primary);font-weight:750;font-size:12px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}