.student-shell-content{min-height:calc(100vh - 8rem)}.student-stat-card h3{font-size:clamp(1.55rem,1.2rem + .8vw,2.15rem)}.student-chart-wrap{min-height:220px}.student-donut{transform:rotate(-90deg)}.student-donut-total{transform:rotate(90deg);font-weight:800;font-size:.28rem;fill:var(--app-fg)}.student-legend-dot{width:10px;height:10px;border-radius:50%;display:inline-block}.student-exam-question{min-height:180px;border-radius:1.35rem;border:1px solid var(--app-border);background:var(--surface-muted);padding:1.05rem 1.15rem}.student-question-palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:.55rem}.student-question-btn{border:1px solid var(--app-border);border-radius:.9rem;font-size:.87rem;font-weight:700;padding:.56rem 0;background:var(--surface-muted);color:var(--app-fg);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.student-question-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.student-question-btn.answered{background:rgba(15,159,110,.14);color:var(--success);border-color:rgba(15,159,110,.28)}.student-question-btn.unanswered{background:var(--surface-muted);color:var(--app-fg)}.student-question-btn.review{background:rgba(217,119,6,.15);color:var(--warning);border-color:rgba(217,119,6,.28)}.student-question-btn.current{outline:2px solid rgba(var(--accent-rgb),.58);outline-offset:2px}.student-question-btn.omr-correct{background:rgba(15,159,110,.14);color:var(--success);border-color:rgba(15,159,110,.28)}.student-question-btn.omr-wrong{background:rgba(225,29,72,.14);color:var(--danger);border-color:rgba(225,29,72,.26)}.student-question-btn.omr-skipped{background:rgba(217,119,6,.14);color:var(--warning);border-color:rgba(217,119,6,.24)}.student-option{border:1px solid var(--app-border);border-radius:1rem;padding:.8rem .9rem;margin-bottom:.65rem;background:hsla(0,0%,100%,.74);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.student-option:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm);border-color:rgba(var(--accent-rgb),.34)}.student-ticket-grid{display:grid;grid-template-columns:340px 1fr;gap:1rem}.student-ticket-thread{max-height:420px;overflow-y:auto}.student-message{border-radius:1rem;padding:.7rem .85rem;margin-bottom:.5rem;border:1px solid var(--app-border)}.student-message.mine{background:rgba(var(--accent-rgb),.08)}.student-message.other{background:var(--surface-muted)}@media (max-width:991.98px){.student-ticket-grid{grid-template-columns:1fr}}.ims-exam-shell{border:1px solid #b8c2cf;background:#f4f4f4;box-shadow:var(--shadow-md);overflow:hidden}.ims-exam-topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;background:#26282d;color:#fff;padding:.9rem 1rem}.ims-exam-brand{min-width:0}.ims-exam-title{font-size:1.15rem;font-weight:800;color:#ffd84d}.ims-exam-subtitle{margin-top:.2rem;font-size:.84rem;color:hsla(0,0%,100%,.82)}.ims-exam-toolbar{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.55rem}.ims-toolbar-button{display:inline-flex;align-items:center;gap:.5rem;border:1px solid hsla(0,0%,100%,.18);border-radius:999px;background:hsla(0,0%,100%,.08);color:#fff;padding:.45rem .8rem;font-size:.82rem;font-weight:700}.ims-toolbar-button:disabled{opacity:.65;cursor:not-allowed}.ims-toolbar-button-accent{background:#f59e0b;border-color:#f59e0b;color:#111827}.ims-toolbar-emoji,.ims-toolbar-icon{display:inline-flex;align-items:center;justify-content:center;width:1.3rem;height:1.3rem;border-radius:999px;background:hsla(0,0%,100%,.2);font-size:.8rem;font-style:normal}.ims-toolbar-emoji{font-size:0}.ims-toolbar-emoji:before{content:"\1F9EE";font-size:.85rem;line-height:1}.ims-section-strip{display:flex;gap:.55rem;overflow-x:auto;background:#ececec;padding:.7rem .7rem .55rem;border-bottom:1px solid #cdd5df}.ims-section-tab{min-width:220px;border:1px solid #b8c2cf;border-radius:.45rem .45rem .6rem .6rem;background:#fff;color:#374151;padding:.7rem .9rem}.ims-section-tab.active{background:linear-gradient(180deg,#4fa7ef,#368ed9);border-color:#2f78b9;color:#fff;position:relative}.ims-section-tab.active:after{content:"";position:absolute;left:1.3rem;bottom:-.55rem;width:1.1rem;height:1.1rem;background:#368ed9;transform:rotate(45deg);border-right:1px solid #2f78b9;border-bottom:1px solid #2f78b9}.ims-section-tab.done{background:#e7f7ec;border-color:#9bd4aa}.ims-section-tab.locked{opacity:.72}.ims-section-tab-title{font-size:.92rem;font-weight:800}.ims-section-tab-meta{margin-top:.2rem;font-size:.76rem}.ims-exam-meta{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.8rem 1rem;background:#fff;border-bottom:1px solid #cdd5df}.ims-exam-meta-left,.ims-exam-meta-right{display:flex;flex-wrap:wrap;gap:.9rem;font-size:.9rem;color:#374151}.ims-exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:0;min-height:68vh}.ims-exam-main{min-width:0;background:#f8f8f8}.ims-exam-main,.ims-exam-sidebar{display:flex;flex-direction:column}.ims-exam-sidebar{gap:.8rem;background:#d7edf9;border-left:1px solid #b8c2cf;padding:.8rem}.ims-info-banner{margin:.75rem .9rem 0;border:1px solid #b8c2cf;background:#fff;color:#374151;padding:.7rem .85rem;font-size:.84rem}.ims-info-banner.success{background:#eefaf3;border-color:#97cfaa}.ims-content-panels{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.85fr);gap:0;flex:1 1 auto;min-height:0}.ims-options-panel,.ims-reading-panel{display:flex;flex-direction:column;min-height:0;background:#fff}.ims-reading-panel{border-right:1px solid #cdd5df}.ims-panel-head{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;padding:.85rem 1rem;border-bottom:1px solid #d4dbe5;background:#fafafa}.ims-panel-kicker{font-size:1rem;font-weight:800;color:#111827}.ims-panel-chip{border-radius:999px;background:#edf2f7;color:#475569;padding:.22rem .55rem;font-size:.74rem;font-weight:700}.ims-reading-copy{flex:1 1 auto;overflow:auto;padding:1rem;font-size:1rem;line-height:1.85;color:#111827;background:linear-gradient(180deg,hsla(0,0%,100%,.96),hsla(0,0%,100%,.98)),repeating-linear-gradient(-35deg,rgba(148,163,184,.08),rgba(148,163,184,.08) 2px,transparent 0,transparent 82px)}.ims-option-list{display:flex;flex-direction:column;gap:.85rem;padding:1rem;overflow:auto}.ims-option-card{display:grid;grid-template-columns:auto auto minmax(0,1fr) auto;align-items:center;gap:.75rem;border:1px solid #cfd7e3;background:#fff;padding:.9rem 1rem;cursor:pointer;transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease}.ims-option-card:hover{border-color:#4899e1;box-shadow:0 10px 24px rgba(61,114,162,.12);transform:translateY(-1px)}.ims-option-card.selected{border-color:#2570b8;background:#ecf6ff}.ims-option-card.reviewed{border-color:#7d54c4;box-shadow:inset 0 0 0 1px rgba(125,84,196,.14)}.ims-option-card.review-correct{border-color:#16a34a;background:#f0fdf4}.ims-option-card.review-correct .ims-option-badge{background:#dcfce7;color:#166534}.ims-option-card.review-correct-unselected{border-color:#22c55e;background:#f0fdf4;border-style:dashed}.ims-option-card.review-correct-unselected .ims-option-badge{background:#dcfce7;color:#166534}.ims-option-card.review-selected{border-color:#38bdf8;background:#f0f9ff}.ims-option-card.review-selected .ims-option-badge{background:#e0f2fe;color:#0f3d63}.ims-option-card.review-wrong{border-color:#dc2626;background:#fff1f2}.ims-option-card.review-wrong .ims-option-badge{background:#fee2e2;color:#991b1b}.ims-review-tag{margin-left:auto;flex-shrink:0;font-size:.74rem;font-weight:700;padding:.15rem .6rem;border-radius:999px}.ims-review-tag-correct{background:#dcfce7;color:#166534}.ims-review-summary{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:.9rem}.ims-review-summary-chip{display:inline-flex;align-items:center;border:1px solid transparent;border-radius:999px;padding:.3rem .75rem;font-size:.74rem;font-weight:700}.ims-review-summary-chip.selected{background:#e0f2fe;border-color:#7dd3fc;color:#0f3d63}.ims-review-summary-chip.correct{background:#dcfce7;border-color:#86efac;color:#166534}.ims-review-summary-chip.muted{background:#e5e7eb;border-color:#cbd5e1;color:#475569}.ims-review-tag-wrong{background:#e0f2fe;color:#0f3d63}.ims-section-tab.clickable{cursor:pointer}.ims-section-tab.clickable:hover{background:hsla(0,0%,100%,.14)}.ims-option-input{margin-top:.2rem}.ims-option-badge{display:inline-flex;align-items:center;justify-content:center;width:2rem;height:2rem;border-radius:999px;background:#eef2f7;color:#1f2937;font-weight:800;font-size:.92rem}.ims-option-text{min-width:0;font-size:.98rem;line-height:1.7;color:#111827}.ims-footer-controls{display:flex;align-items:center;justify-content:space-between;gap:.85rem;padding:.75rem .9rem;border-top:1px solid #cdd5df;background:#f4f4f4}.ims-footer-left,.ims-footer-right{display:flex;flex-wrap:wrap;gap:.65rem}.ims-action-button{border:1px solid #c2ccd8;background:#fff;color:#111827;padding:.7rem 1.15rem;font-size:.95rem;font-weight:700}.ims-action-button.primary{border-color:#2186d1;background:#2186d1;color:#fff}.ims-action-button.secondary{border-color:#2f9e44;background:#2f9e44;color:#fff}.ims-action-button.ghost{background:#fff}.ims-action-button:disabled{opacity:.55;cursor:not-allowed}.ims-profile-card,.ims-sidebar-card{border:1px solid #b8c2cf;background:#fff;padding:.85rem}.ims-profile-card{display:flex;align-items:center;gap:.8rem}.ims-avatar{width:4rem;height:4rem;border-radius:1rem;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#eef4fb,#c7d3e3);color:#1f2937;font-size:1.15rem;font-weight:800;box-shadow:inset 0 0 0 1px rgba(90,109,135,.22)}.ims-profile-name{font-size:1.05rem;font-weight:800;color:#111827}.ims-profile-meta{margin-top:.15rem;font-size:.8rem;color:#475569}.ims-sidebar-title{font-size:.98rem;font-weight:800;color:#111827}.ims-sidebar-subtitle{margin-top:.35rem;font-size:.8rem;color:#475569}.ims-legend-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;margin-top:.8rem}.ims-legend-item{display:flex;align-items:center;gap:.55rem;min-width:0;font-size:.8rem;color:#374151}.ims-legend-item.wide{grid-column:1/-1}.ims-legend-shape,.ims-question-chip{position:relative;width:3rem;height:2.5rem;display:inline-flex;align-items:center;justify-content:center;font-weight:800;color:#fff;border:1px solid transparent;flex:0 0 auto}.ims-legend-shape.answered,.ims-question-chip.answered{background:linear-gradient(180deg,#8fd03e,#61a92a);border-color:#4b8e1e;clip-path:polygon(18% 0,82% 0,100% 28%,100% 72%,50% 100%,0 72%,0 28%)}.ims-legend-shape.not-answered,.ims-question-chip.not-answered{background:linear-gradient(180deg,#ff7a21,#d94f0f);border-color:#b8400d;clip-path:polygon(18% 0,82% 0,100% 28%,100% 72%,50% 100%,0 72%,0 28%)}.ims-legend-shape.not-visited,.ims-question-chip.not-visited{background:#f1f3f5;border-color:#9aa6b2;color:#374151;border-radius:.3rem}.ims-legend-shape.answered-review,.ims-legend-shape.review,.ims-question-chip.answered-review,.ims-question-chip.review{background:linear-gradient(180deg,#8a63c2,#6e49a6);border-color:#563487;border-radius:999px}.ims-legend-shape.answered-review:after,.ims-question-chip.answered-review:after{content:"";position:absolute;right:-.15rem;bottom:-.05rem;width:.85rem;height:.85rem;border-radius:999px;background:linear-gradient(180deg,#8fd03e,#61a92a);border:1px solid #fff}.ims-question-chip{cursor:pointer;font-size:1rem}.ims-question-chip.current{outline:3px solid #3b82f6;outline-offset:2px}.ims-palette-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;margin-top:.8rem}.ims-stat-row{display:flex;align-items:center;justify-content:space-between;gap:.7rem;margin-top:.7rem;font-size:.85rem;color:#374151}.ims-exit-link,.ims-submit-button{display:inline-flex;align-items:center;justify-content:center;width:100%;border:1px solid #2390d9;background:#2390d9;color:#fff;padding:.85rem 1rem;font-size:1rem;font-weight:800}.ims-submit-button:disabled{opacity:.55;cursor:not-allowed}.ims-exit-link{border-color:#c2ccd8;background:#fff;color:#111827}.ims-modal-backdrop{position:fixed;inset:0;z-index:2500;display:flex;align-items:center;justify-content:center;padding:1rem;background:rgba(15,23,42,.5);backdrop-filter:blur(4px)}.ims-modal-panel{width:min(760px,100%);border:1px solid var(--app-border);background:var(--surface-strong);box-shadow:var(--shadow-lg)}.ims-modal-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.1rem;border-bottom:1px solid var(--app-border)}.ims-calculator-close,.ims-modal-close{border:0;background:transparent;color:var(--app-muted);font-size:1.2rem;line-height:1}.ims-modal-body{padding:1rem 1.1rem 1.15rem}.ims-instruction-list{margin:0;padding-left:1.25rem;color:var(--app-fg);line-height:1.75}.ims-calculator{position:fixed;right:1.2rem;bottom:1.2rem;z-index:2400;width:min(320px,calc(100vw - 1.5rem));border:1px solid #b8c2cf;background:#fff;box-shadow:var(--shadow-lg);touch-action:none}.ims-calculator.dragging{box-shadow:0 24px 48px rgba(15,23,42,.26)}.ims-calculator-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;background:#1f2937;color:#fff;padding:.7rem .85rem;cursor:move;-webkit-user-select:none;-moz-user-select:none;user-select:none;touch-action:none}.ims-calculator-title{font-size:.95rem;font-weight:800}.ims-calculator-display{padding:.85rem;border-bottom:1px solid #d4dbe5;background:#f8fafc;text-align:right}.ims-calculator-expression{min-height:1.2rem;font-size:.78rem;color:#64748b;word-break:break-all}.ims-calculator-result{margin-top:.25rem;font-size:1.5rem;font-weight:800;color:#0f172a}.ims-calculator-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}.ims-calculator-grid button{border:1px solid #dce3ec;background:#fff;color:#0f172a;padding:.9rem .5rem;font-size:1rem;font-weight:700}.ims-calculator-grid button:hover{background:#eef5fb}@media (max-width:1199.98px){.ims-exam-layout{grid-template-columns:1fr}.ims-exam-sidebar{border-left:0;border-top:1px solid #b8c2cf}}@media (max-width:991.98px){.ims-exam-meta,.ims-exam-topbar,.ims-footer-controls{flex-direction:column;align-items:stretch}.ims-exam-meta-right,.ims-exam-toolbar{justify-content:flex-start}.ims-content-panels{grid-template-columns:1fr}.ims-reading-panel{border-right:0;border-bottom:1px solid #cdd5df}}@media (max-width:575.98px){.ims-section-tab{min-width:190px}.ims-palette-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:.6rem}.ims-legend-grid{grid-template-columns:1fr}.ims-legend-item.wide{grid-column:auto}}html[data-theme=dark] .ims-exam-shell,html[data-theme=night] .ims-exam-shell{background:var(--surface-strong);border-color:var(--app-border)}html[data-theme=dark] .ims-section-strip,html[data-theme=night] .ims-section-strip{background:var(--surface-muted);border-color:var(--app-border)}html[data-theme=dark] .ims-section-tab,html[data-theme=night] .ims-section-tab{background:var(--surface-alt);border-color:var(--app-border);color:var(--app-fg)}html[data-theme=dark] .ims-exam-meta,html[data-theme=night] .ims-exam-meta{background:var(--surface-strong);border-color:var(--app-border);color:var(--app-fg)}html[data-theme=dark] .ims-exam-meta-left,html[data-theme=dark] .ims-exam-meta-right,html[data-theme=night] .ims-exam-meta-left,html[data-theme=night] .ims-exam-meta-right{color:var(--app-muted)}html[data-theme=dark] .ims-exam-main,html[data-theme=night] .ims-exam-main{background:var(--surface)}html[data-theme=dark] .ims-exam-sidebar,html[data-theme=night] .ims-exam-sidebar{background:var(--surface-muted);border-color:var(--app-border)}html[data-theme=dark] .ims-info-banner,html[data-theme=night] .ims-info-banner{background:var(--surface-alt);border-color:var(--app-border);color:var(--app-fg)}html[data-theme=dark] .ims-options-panel,html[data-theme=dark] .ims-reading-panel,html[data-theme=night] .ims-options-panel,html[data-theme=night] .ims-reading-panel{background:var(--surface-strong);border-color:var(--app-border)}html[data-theme=dark] .ims-panel-kicker,html[data-theme=night] .ims-panel-kicker{color:var(--app-muted)}html[data-theme=dark] .ims-reading-copy,html[data-theme=night] .ims-reading-copy{color:var(--app-fg)}html[data-theme=dark] .ims-option-card,html[data-theme=night] .ims-option-card{background:var(--surface-alt);border-color:var(--app-border);color:var(--app-fg)}html[data-theme=dark] .ims-option-card:hover,html[data-theme=night] .ims-option-card:hover{border-color:var(--accent)}html[data-theme=dark] .ims-option-card.selected,html[data-theme=night] .ims-option-card.selected{border-color:var(--accent);background:rgba(var(--accent-rgb),.14)}html[data-theme=dark] .ims-option-badge,html[data-theme=night] .ims-option-badge{background:var(--surface-muted);color:var(--app-fg)}html[data-theme=dark] .ims-option-text,html[data-theme=night] .ims-option-text{color:var(--app-fg)}html[data-theme=dark] .ims-footer-controls,html[data-theme=dark] .ims-profile-card,html[data-theme=dark] .ims-sidebar-card,html[data-theme=night] .ims-footer-controls,html[data-theme=night] .ims-profile-card,html[data-theme=night] .ims-sidebar-card{background:var(--surface-strong);border-color:var(--app-border)}html[data-theme=dark] .ims-profile-name,html[data-theme=night] .ims-profile-name{color:var(--app-fg)}html[data-theme=dark] .ims-profile-meta,html[data-theme=night] .ims-profile-meta{color:var(--app-muted)}html[data-theme=dark] .ims-action-button.ghost,html[data-theme=dark] .ims-sidebar-title,html[data-theme=night] .ims-action-button.ghost,html[data-theme=night] .ims-sidebar-title{color:var(--app-muted);border-color:var(--app-border)}html[data-theme=reading] .ims-exam-shell{background:var(--surface-strong);border-color:var(--app-border)}html[data-theme=reading] .ims-section-strip{background:var(--surface-muted);border-color:var(--app-border)}html[data-theme=reading] .ims-option-card,html[data-theme=reading] .ims-section-tab{background:var(--surface-strong);border-color:var(--app-border);color:var(--app-fg)}html[data-theme=reading] .ims-option-card.selected{border-color:var(--accent);background:rgba(var(--accent-rgb),.12)}html[data-theme=reading] .ims-option-badge{background:var(--surface-muted);color:var(--app-fg)}html[data-theme=reading] .ims-option-text,html[data-theme=reading] .ims-reading-copy{color:var(--app-fg)}html[data-theme=reading] .ims-options-panel,html[data-theme=reading] .ims-reading-panel{background:var(--surface-strong);border-color:var(--app-border)}html[data-theme=reading] .ims-exam-main{background:var(--surface)}html[data-theme=reading] .ims-exam-sidebar{background:var(--surface-muted);border-color:var(--app-border)}html[data-theme=reading] .ims-exam-meta{background:var(--surface-strong);border-color:var(--app-border);color:var(--app-fg)}html[data-theme=reading] .ims-panel-kicker{color:var(--app-muted)}html[data-theme=reading] .ims-footer-controls,html[data-theme=reading] .ims-profile-card,html[data-theme=reading] .ims-sidebar-card{background:var(--surface-strong);border-color:var(--app-border)}html[data-theme=reading] .ims-profile-name{color:var(--app-fg)}html[data-theme=reading] .ims-profile-meta{color:var(--app-muted)}html[data-theme=reading] .ims-sidebar-title{color:var(--app-muted);border-color:var(--app-border)}