:root{--bg:#F8FAFC;--surface:#FFFFFF;--text:#111827;--text-muted:#64748B;--border:#E5E7EB;--accent:#4F46E5;--accent-soft:#EEF2FF;--answered:#16A34A;--marked:#D97706;--current:#4F46E5;--good:#16A34A;--good-soft:#ECFDF3;--warn:#D97706;--warn-soft:#FFFBEB;--bad:#DC2626;--bad-soft:#FEF2F2;--neutral-soft:#F1F5F9;--shadow-card: 0 1px 2px rgba(15, 23, 42, .04);--shadow-modal: 0 24px 64px -12px rgba(15, 23, 42, .28);--transition-fast: .12s ease;--transition-base: .18s ease;color-scheme:light}*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,sans-serif;padding-left:max(0px,env(safe-area-inset-left,0px));padding-right:max(0px,env(safe-area-inset-right,0px))}.app{display:flex;flex-direction:column;height:100%}header.topbar{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;display:flex;align-items:center;justify-content:space-between;padding:12px max(20px,env(safe-area-inset-right,0px)) 12px max(20px,env(safe-area-inset-left,0px));background:var(--surface);border-bottom:1px solid var(--border);gap:12px;flex-wrap:wrap}body:before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:21;background:var(--surface)}.brand{display:flex;align-items:center;gap:10px;min-width:0}.logo{height:26px;width:auto;flex:none;display:block}.exam-name{font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar-right{display:flex;align-items:center;gap:10px;flex:none}.pill{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);border:1px solid var(--border);border-radius:999px;padding:6px 12px;white-space:nowrap}.btn{font-family:inherit;font-size:13px;font-weight:500;border-radius:8px;cursor:pointer;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:8px 14px;transition:background var(--transition-fast);white-space:nowrap}.btn:not(:disabled):hover{background:var(--accent-soft)}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-dark{background:var(--text);color:var(--surface);border-color:var(--text)}.btn-dark:not(:disabled):hover{opacity:.9;background:var(--text)}.btn-ghost{border-color:transparent}.btn-secondary{border-color:transparent;background:transparent;color:var(--text-muted)}.btn-secondary:not(:disabled):hover{background:var(--neutral-soft);color:var(--text)}.menu-btn{display:none}.body-row{flex:1;display:flex;min-height:0}aside.sidebar{width:280px;flex:none;border-right:1px solid var(--border);background:var(--surface);padding:24px max(20px,env(safe-area-inset-left,0px)) 24px 20px;overflow-y:auto;display:flex;flex-direction:column;gap:28px}.sb-title{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;margin:0 0 12px}.progress-count{font-size:14px;margin-bottom:10px}.progress-count b{font-weight:600}.progress-track{height:5px;border-radius:999px;background:var(--border);overflow:hidden}.progress-fill{height:100%;background:var(--text);border-radius:999px;transition:width var(--transition-base)}.q-list{display:flex;flex-direction:column;gap:2px}.q-item{display:flex;align-items:center;gap:10px;padding:10px;border-radius:8px;border:1px solid transparent;cursor:pointer;font-size:13.5px;color:var(--text);background:transparent;text-align:left;width:100%;transition:background var(--transition-fast),box-shadow var(--transition-fast)}.q-item:hover{background:var(--accent-soft);box-shadow:var(--shadow-card)}.q-item.current{border-color:var(--current);background:var(--accent-soft);box-shadow:var(--shadow-card)}.q-num{width:22px;height:22px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;font-size:11.5px;font-weight:600;border:1.5px solid var(--border);color:var(--text-muted);transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast)}.q-item.answered .q-num{background:var(--answered);border-color:var(--answered);color:var(--surface)}.q-item.marked .q-num{border-color:var(--marked);color:var(--marked)}.q-item.marked.answered .q-num{color:var(--surface);box-shadow:0 0 0 1.5px var(--marked)}.q-item.current .q-num{border-color:var(--current);color:var(--current)}.q-item.current.answered .q-num{color:var(--surface)}.q-type{color:var(--text-muted);font-size:12.5px}.q-flag{margin-left:auto;font-size:12px;flex:none}.legend{display:flex;flex-direction:column;gap:10px;font-size:12.5px;color:var(--text-muted)}.legend-item{display:flex;align-items:center;gap:8px}.legend-dot{width:12px;height:12px;border-radius:50%;border:1.5px solid var(--border);flex:none}.legend-dot.answered{border-color:var(--answered)}.legend-dot.marked{border-color:var(--marked)}.legend-dot.current{border-color:var(--current)}main.content{flex:1;min-width:0;overflow-y:auto;display:flex;justify-content:center}.q-column{width:100%;max-width:720px;padding:28px max(20px,env(safe-area-inset-right,0px)) 40px max(20px,env(safe-area-inset-left,0px))}.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:24px}.card+.card{margin-top:20px}.card>h2{margin:0 0 16px;font-size:18px;font-weight:700}.q-head{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}.q-head-num{font-weight:500;font-size:13px;color:var(--text-muted)}.tag{font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent)}.tag-essay{background:var(--accent-soft);color:var(--accent)}.q-text{font-size:16.5px;line-height:1.55;font-weight:600;margin:0 0 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var(--transition-fast)}.mark-toggle:hover{background:var(--neutral-soft)}.mark-toggle.active{background:var(--warn-soft);border-color:var(--marked);color:var(--marked)}.mark-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.essay-note{background:var(--accent-soft);color:var(--text);border-radius:10px;padding:12px 14px;font-size:13.5px;line-height:1.6;margin:0 0 14px}textarea.essay{width:100%;min-height:260px;resize:vertical;border:1px solid var(--border);border-radius:10px;padding:16px 18px;font-family:inherit;font-size:14.5px;line-height:1.6;color:var(--text);background:var(--bg);transition:border-color var(--transition-fast)}textarea.essay:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}.char-count{text-align:right;font-size:12.5px;color:var(--text-muted);margin-top:10px;font-variant-numeric:tabular-nums}.nav-row{display:flex;justify-content:space-between;margin-top:28px;gap:12px}.nav-row .btn{padding:10px 18px}footer.bottombar{position:sticky;bottom:0;z-index:20;background:var(--surface);border-top:1px solid var(--border);padding:12px max(20px,env(safe-area-inset-right,0px)) max(12px,env(safe-area-inset-bottom,0px)) max(20px,env(safe-area-inset-left,0px));display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.save-status{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);transition:color var(--transition-fast)}.save-dot{width:8px;height:8px;border-radius:50%;background:var(--answered)}.hint{font-size:12.5px;color:var(--text-muted);transition:color 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var(--transition-fast)}table.data-table tbody tr:hover,table.data-table tbody tr.selected{background:var(--accent-soft)}table.data-table tbody tr:last-child td{border-bottom:none}.candidate-name{font-weight:700}.candidate-email{display:block;font-size:12.5px;color:var(--text-muted);font-weight:400;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cell-progress{display:flex;align-items:center;gap:10px;min-width:120px}.cell-progress .progress-track{flex:1}.cell-progress span{font-size:12.5px;color:var(--text-muted);font-variant-numeric:tabular-nums;flex:none}.cell-score{font-weight:600;font-variant-numeric:tabular-nums}.empty-state{color:var(--text-muted);font-size:14px;padding:24px 0;text-align:center}.detail-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:20px}.detail-title{margin:0 0 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10px}.essay-answer-text{margin:0;white-space:pre-wrap;line-height:1.6;font-size:14.5px;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:16px}.disclosure-marker::-webkit-details-marker{display:none}.disclosure-marker:before{content:"▸";color:var(--text-muted);transition:transform var(--transition-fast);flex:none}details[open]>.disclosure-marker:before{transform:rotate(90deg)}.qa-block{border-bottom:1px solid var(--border)}.qa-block:last-child{border-bottom:none}.qa-head{display:flex;align-items:center;gap:10px;padding:12px 0;cursor:pointer;list-style:none}.qa-num{font-weight:600;font-size:13.5px}.qa-points{color:var(--text-muted);font-size:12.5px;margin-left:auto}.qa-body{padding:0 0 16px}.qa-text{margin:0 0 10px;font-size:14.5px;line-height:1.5}.qa-options{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.qa-option{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;padding:9px 12px;border:1px solid var(--border);border-radius:8px}.qa-option-letter{font-weight:600;color:var(--text-muted);flex:none}.modal-wide{max-width:760px}.attempt-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.modal-scroll-body{max-height:55vh;overflow-y:auto;margin-bottom:14px}.archive-date{color:var(--text-muted)}.archive-score{margin-left:auto;font-weight:600;font-variant-numeric:tabular-nums}.field-row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.field-row .field{flex:1;min-width:200px;margin:0}.field-row .btn{flex:none}@media (max-width:860px){.menu-btn{display:inline-flex;align-items:center;gap:6px}aside.sidebar{position:fixed;top:0;bottom:0;left:0;z-index:30;max-width:84vw;transform:translate(-100%);transition:transform var(--transition-base);padding-top:calc(20px + env(safe-area-inset-top,0px))}aside.sidebar.open{transform:translate(0)}.q-column{padding-top:20px}.card{padding:18px}.nav-row .btn{flex:1}.btn{min-height:40px}.q-item{min-height:44px}.col-progress,.col-action,.col-added{display:none}table.data-table{table-layout:fixed}table.data-table th,table.data-table td{padding:10px 8px;white-space:normal;word-break:break-word}table.data-table th:nth-child(1),table.data-table td:nth-child(1){width:48%}table.data-table th:nth-child(2),table.data-table td:nth-child(2){width:30%}table.data-table th:nth-child(4),table.data-table td:nth-child(4){width:22%}.candidate-email{max-width:100%}table.whitelist-table th:nth-child(1),table.whitelist-table td:nth-child(1){width:48%}table.whitelist-table th:nth-child(2),table.whitelist-table td:nth-child(2){width:26%}table.whitelist-table th:nth-child(4),table.whitelist-table td:nth-child(4){width:26%}}@media (max-width:480px){.q-column{padding-left:12px;padding-right:12px}.card{padding:16px}.stat-tile{padding:14px 16px}.detail-header{flex-direction:column;align-items:stretch}.detail-score{text-align:left}}.auth-shell{min-height:100%;display:flex;align-items:center;justify-content:center;padding:32px 20px;background:radial-gradient(ellipse 760px 560px at 50% -5%,var(--accent-soft),transparent 65%),var(--bg)}.auth-card{width:100%;max-width:400px;display:flex;flex-direction:column;gap:16px;border-radius:20px;border:none;box-shadow:var(--shadow-modal);padding:36px 32px}.auth-logo{align-self:center;height:40px;width:auto;display:block}.auth-card h1{margin:0;font-size:21px;font-weight:700;text-align:center}.auth-card h1+.hint{text-align:center}.auth-form{display:flex;flex-direction:column;gap:14px;margin-top:4px}.field{display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--text-muted)}.field input{font-family:inherit;font-size:14.5px;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:12px 14px;width:100%;transition:border-color var(--transition-fast)}.auth-shell .btn{border-radius:999px;min-height:46px;display:flex;align-items:center;justify-content:center}.field input:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}.field-with-action{position:relative;display:flex}.field-with-action input{padding-right:40px}.field-toggle{position:absolute;right:4px;top:50%;transform:translateY(-50%);width:32px;height:32px;display:flex;align-items:center;justify-content:center;border:none;border-radius:8px;background:transparent;color:var(--text-muted);cursor:pointer;font-size:15px;line-height:1;padding:0;transition:background var(--transition-fast),color var(--transition-fast)}.field-toggle:hover{background:var(--neutral-soft);color:var(--text)}.field-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.auth-legal{margin:4px 0 0;font-size:12px;color:var(--text-muted);text-align:center;line-height:1.6}.auth-legal a{color:var(--text-muted);text-decoration:underline;text-underline-offset:2px}.auth-legal a:hover{color:var(--accent)}.divider{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:12.5px;margin:4px 0}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--border)}.error-text{color:var(--bad);font-size:13px;margin:0}.google-btn{width:100%;justify-content:center;display:flex;gap:10px}.google-icon{flex:none}.link-btn{align-self:center;font-size:13px;color:var(--text-muted)}