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(width>=640px){.matrix-card-header{flex-direction:row;justify-content:space-between;align-items:center}}.matrix-title{color:var(--text-primary);font-size:18px;font-weight:800}.matrix-subtitle{color:var(--text-tertiary);font-size:12px;font-weight:500}.questions-matrix-grid{grid-template-columns:repeat(6,1fr);gap:8px;display:grid}@media (width>=480px){.questions-matrix-grid{grid-template-columns:repeat(8,1fr)}}@media (width>=640px){.questions-matrix-grid{grid-template-columns:repeat(10,1fr)}}@media (width>=860px){.questions-matrix-grid{grid-template-columns:repeat(12,1fr);gap:10px}}.matrix-cell-btn{border-radius:var(--radius-sm);background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);height:48px;color:var(--text-primary);transition:all .2s var(--spring-ease);flex-direction:column;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:flex}.matrix-cell-btn:hover{transform:scale(1.06);box-shadow:0 4px 12px #0000000d}.matrix-cell-btn:active{transform:scale(.95)}.matrix-cell-btn.known{background:var(--status-success-soft);color:var(--status-success-text);border-color:#00b0744d}.matrix-cell-btn.review{background:var(--status-review-soft);color:var(--status-review-text);border-color:#ff6b4a4d}.matrix-cell-btn.correct-review{background:linear-gradient(135deg, var(--status-success-soft) 0%, var(--status-review-soft) 100%);color:var(--text-primary);border-color:#ff6b4a73}.matrix-cell-btn.current{border-color:var(--brand-primary);box-shadow:0 0 0 2px var(--brand-primary-soft)}.matrix-cell-badge{opacity:.9;font-size:9px;line-height:1}.badge-correct-review{align-items:center;gap:1.5px;font-weight:800;line-height:1;display:inline-flex}.badge-correct-review .badge-check{color:var(--status-success-text);font-size:8.5px}.badge-correct-review .badge-rotate{color:var(--status-review-text);font-size:8.5px}.matrix-legend-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.matrix-legend-item{color:var(--text-secondary);align-items:center;gap:5px;font-size:11px;font-weight:600;display:inline-flex}.matrix-legend-badge{border-radius:4px;justify-content:center;align-items:center;min-width:18px;height:18px;padding:0 4px;font-size:9px;font-weight:800;line-height:1;display:inline-flex}.matrix-legend-badge.known{background:var(--status-success-soft);color:var(--status-success-text);border:1px solid #00b0744d}.matrix-legend-badge.review{background:var(--status-review-soft);color:var(--status-review-text);border:1px solid #ff6b4a4d}.matrix-legend-badge.correct-review{background:linear-gradient(135deg, var(--status-success-soft) 0%, var(--status-review-soft) 100%);color:var(--status-review-text);border:1px solid #ff6b4a66}.swipe-stage-wrapper{max-width:580px;animation:fade-in-up .35s var(--spring-ease);flex-direction:column;align-items:center;margin:0 auto;display:flex;position:relative}.swipe-card-deck{justify-content:center;width:100%;min-height:480px;display:flex;position:relative}.swipe-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl);width:100%;box-shadow:var(--shadow-floating);touch-action:none;-webkit-user-select:none;user-select:none;cursor:grab;transition:box-shadow .25s var(--spring-ease);padding:24px;position:relative}@media (width>=480px){.swipe-card{padding:32px}}.swipe-card:active{cursor:grabbing}.swipe-card.dragging{box-shadow:var(--shadow-active)}.swipe-stamp{z-index:20;border-radius:var(--radius-sm);letter-spacing:.05em;opacity:0;pointer-events:none;padding:6px 14px;font-size:14px;font-weight:800;transition:opacity .15s;position:absolute;top:24px;box-shadow:0 2px 10px #0000000d}.swipe-stamp-pass{border:2.5px solid var(--status-success);color:var(--status-success);background:var(--status-success-soft);right:24px;transform:rotate(12deg)}.swipe-stamp-next{border:2.5px solid var(--brand-primary);color:var(--brand-primary);background:var(--brand-primary-soft);right:24px;transform:rotate(12deg)}.swipe-stamp-review{border:2.5px solid var(--status-review);color:var(--status-review);background:var(--status-review-soft);left:24px;transform:rotate(-12deg)}.card-header-meta{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.card-num-pill{border-radius:var(--radius-pill);background:var(--brand-primary-soft);color:var(--brand-primary-text);transition:all .2s var(--spring-ease);justify-content:center;align-items:center;padding:4px 12px;font-size:12px;font-weight:800;display:inline-flex}.card-num-pill.pill-filtered{background:var(--brand-primary-soft);color:var(--brand-primary);border:1px solid #3182f64d;padding:3px 8px}.pill-hideknown-icon{justify-content:center;align-items:center;line-height:1;display:inline-flex}.card-pos-text{color:var(--text-tertiary);margin-left:8px;font-size:12px;font-weight:600}.card-status-badges{align-items:center;gap:6px;display:flex}.status-chip{border-radius:var(--radius-pill);padding:3px 8px;font-size:11px;font-weight:700}.status-chip.known{background:var(--status-success-soft);color:var(--status-success-text)}.status-chip.review{background:var(--status-review-soft);color:var(--status-review-text)}.status-chip.correct-review{background:linear-gradient(135deg, var(--status-success-soft) 0%, var(--status-review-soft) 100%);color:var(--status-review-text);border:1px solid #ff6b4a4d}.card-question-text{color:var(--text-primary);margin-bottom:20px;font-size:18px;font-weight:700;line-height:1.6}@media (width>=480px){.card-question-text{font-size:20px}}.card-diagram-box{border-radius:var(--radius-md);background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);justify-content:center;margin-bottom:20px;padding:12px;display:flex}.card-diagram-img{object-fit:contain;max-height:180px}.card-choices-list{flex-direction:column;gap:10px;margin-bottom:24px;display:flex}.choice-btn{text-align:left;border-radius:var(--radius-md);background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);width:100%;color:var(--text-primary);transition:all .2s var(--spring-ease);align-items:flex-start;gap:12px;padding:14px 16px;font-size:15px;font-weight:500;line-height:1.45;display:flex}.choice-btn:hover{background:var(--bg-surface-hover);transform:scale(1.015)}.choice-btn:active{transform:scale(.985)}.choice-num-glyph{color:var(--text-tertiary);flex-shrink:0;font-weight:700}.choice-btn.selected{background:var(--brand-primary-soft);border-color:var(--brand-primary);color:var(--brand-primary-text);font-weight:600}.choice-btn.correct{background:var(--status-success-soft);border-color:var(--status-success);color:var(--status-success-text);font-weight:600}.choice-btn.wrong{background:var(--status-review-soft);border-color:var(--status-review);color:var(--status-review-text)}.accordion-wrapper{border-top:1px solid var(--border-subtle);padding-top:16px}.accordion-trigger-btn{border-radius:var(--radius-sm);width:100%;color:var(--text-secondary);justify-content:space-between;align-items:center;padding:10px 14px;font-size:13px;font-weight:700;transition:background-color .2s;display:flex}.accordion-trigger-btn:hover{background-color:var(--bg-surface-hover);color:var(--text-primary)}.accordion-icon{transition:transform .3s var(--spring-ease)}.accordion-trigger-btn[aria-expanded=true] .accordion-icon{transform:rotate(180deg)}.accordion-content-grid{opacity:0;transition:grid-template-rows .35s var(--spring-ease), opacity .3s ease;grid-template-rows:0fr;display:grid}.accordion-content-grid.open{opacity:1;grid-template-rows:1fr;margin-top:12px}.accordion-inner-box{overflow:hidden}.explanation-body{background:var(--brand-primary-soft);border-radius:var(--radius-md);color:var(--text-primary);border:1px solid #3182f626;padding:16px;font-size:13.5px;line-height:1.65}.explanation-answer-line{color:var(--brand-primary);align-items:center;gap:8px;margin-bottom:8px;font-weight:800;display:flex}.explanation-result-tag{border-radius:var(--radius-pill);padding:2px 8px;font-size:11px}.explanation-result-tag.correct{color:var(--status-success-text);background:#00b07433}.explanation-result-tag.wrong{color:var(--status-review-text);background:#ff6b4a33}.gesture-hint-bar{text-align:center;color:var(--text-tertiary);margin-top:16px;font-size:11px;font-weight:600}.swipe-action-dock{justify-content:center;align-items:center;gap:20px;margin-top:24px;display:flex}.action-circle-btn{background:var(--bg-surface);border:1px solid var(--border-default);width:52px;height:52px;transition:all .2s var(--spring-ease);border-radius:50%;justify-content:center;align-items:center;display:flex;box-shadow:0 4px 16px #0000000f}@media (width>=480px){.action-circle-btn{width:56px;height:56px}}.action-circle-btn:hover{transform:scale(1.08)}.action-circle-btn:active{transform:scale(.92)}.action-circle-btn.btn-review{color:var(--status-review);border-color:#ff6b4a40}.action-circle-btn.btn-review:hover{background:var(--status-review-soft)}.action-circle-btn.btn-hint{color:var(--brand-primary);border-color:#3182f640;width:44px;height:44px}.action-circle-btn.btn-hint:hover{background:var(--brand-primary-soft)}.action-circle-btn.btn-known{color:var(--status-success);border-color:#00b07440}.action-circle-btn.btn-known:hover{background:var(--status-success-soft)}.action-circle-btn.btn-next{color:var(--brand-primary);border-color:#3182f640}.action-circle-btn.btn-next:hover{background:var(--brand-primary-soft)}.focus-card-wrapper{max-width:640px;animation:fade-in-up .35s var(--spring-ease);margin:0 auto}.focus-nav-row{border-top:1px solid var(--border-subtle);justify-content:space-between;align-items:center;margin-top:24px;padding-top:16px;display:flex}.focus-nav-btn{border-radius:var(--radius-sm);transition:all .2s var(--spring-ease);align-items:center;gap:6px;padding:10px 18px;font-size:13px;font-weight:700;display:inline-flex}.focus-nav-btn.prev{background:var(--bg-surface-subtle);color:var(--text-secondary)}.focus-nav-btn.prev:hover:not(:disabled){background:var(--bg-surface-hover);color:var(--text-primary)}.focus-nav-btn.next{background:var(--brand-primary);color:#fff;box-shadow:0 4px 14px #3182f64d}.focus-nav-btn.next:hover:not(:disabled){background:var(--brand-primary-hover);transform:scale(1.02)}.focus-nav-btn:disabled{opacity:.35;pointer-events:none}.seamless-toast-wrapper{bottom:calc(76px + env(safe-area-inset-bottom,14px));z-index:90;width:92%;max-width:440px;animation:toast-slide-up .4s var(--spring-ease);position:fixed;left:50%;transform:translate(-50%)}@media (width>=640px){.seamless-toast-wrapper{bottom:24px}}@keyframes toast-slide-up{0%{opacity:0;transform:translate(-50%,60px)}to{opacity:1;transform:translate(-50%)}}.seamless-toast-card{-webkit-backdrop-filter:blur(20px);border-radius:var(--radius-lg);box-shadow:var(--shadow-toast);background-color:#ffffffeb;border:1px solid #00000014;justify-content:space-between;align-items:center;gap:12px;padding:14px 18px;display:flex}[data-theme=dark] .seamless-toast-card{background-color:#1c1c1eeb;border-color:#ffffff1f}.toast-left{align-items:center;gap:12px;min-width:0;display:flex}.toast-avatar{background:var(--brand-primary-soft);width:38px;height:38px;color:var(--brand-primary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.toast-meta{flex-direction:column;min-width:0;display:flex}.toast-tag{color:var(--brand-primary);font-size:11px;font-weight:700}.toast-title{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:13.5px;font-weight:700;overflow:hidden}.toast-actions{flex-shrink:0;align-items:center;gap:8px;display:flex}.toast-btn-secondary{color:var(--text-tertiary);padding:8px 12px;font-size:12px;font-weight:600;transition:color .2s}.toast-btn-secondary:hover{color:var(--text-primary)}.toast-btn-primary{border-radius:var(--radius-pill);background:var(--brand-primary);color:#fff;transition:all .2s var(--spring-ease);padding:8px 16px;font-size:12px;font-weight:700;box-shadow:0 4px 12px #3182f659}.toast-btn-primary:hover{background:var(--brand-primary-hover);transform:scale(1.02)}.toast-btn-primary:active{transform:scale(.96)}.mobile-bottom-dock{z-index:50;-webkit-backdrop-filter:blur(24px);border-top:1px solid var(--border-default);padding:8px 16px max(14px, env(safe-area-inset-bottom,14px));background-color:#ffffffe0;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 24px #0000000a}[data-theme=dark] .mobile-bottom-dock{border-top-color:var(--border-subtle);background-color:#121212e0;box-shadow:0 -4px 24px #0006}@media (width>=640px){.mobile-bottom-dock{display:none}}.bottom-dock-inner{justify-content:space-around;align-items:center;gap:4px;max-width:440px;margin:0 auto;display:flex}.dock-btn{color:var(--text-tertiary);transition:all .2s var(--spring-ease);border-radius:var(--radius-pill);cursor:pointer;background:0 0;border:none;outline:none;flex-direction:column;justify-content:center;align-items:center;gap:3px;padding:6px 12px;font-size:11px;font-weight:700;text-decoration:none;display:flex}.dock-btn:active{transform:scale(.9)}.dock-btn.active{color:var(--brand-primary);background:var(--brand-primary-soft)}.dock-btn.active svg{stroke:var(--brand-primary)}.dock-jump-badge{background:var(--bg-surface-subtle);border:1px solid var(--border-subtle);border-radius:6px;justify-content:center;align-items:center;gap:2px;padding:2px 6px;font-size:12px;font-weight:800;line-height:1.2;display:flex}.dialog-overlay{z-index:100;-webkit-backdrop-filter:blur(8px);background:#00000080;justify-content:center;align-items:flex-end;padding:0;animation:.25s fade-in;display:flex;position:fixed;inset:0}@media (width>=640px){.dialog-overlay{align-items:center;padding:24px}}.dialog-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl) var(--radius-xl) 0 0;width:100%;max-width:580px;box-shadow:var(--shadow-toast);flex-direction:column;max-height:85vh;padding:24px;display:flex}@media (width>=640px){.dialog-card{border-radius:var(--radius-xl)}}.dialog-header{justify-content:space-between;align-items:flex-start;margin-bottom:20px;display:flex}.dialog-title{color:var(--text-primary);font-size:18px;font-weight:800}.dialog-subtitle{color:var(--text-tertiary);font-size:12px;font-weight:500}.dialog-close-btn{background:var(--bg-surface-subtle);width:32px;height:32px;color:var(--text-secondary);border-radius:50%;justify-content:center;align-items:center;display:flex}.dialog-grid{grid-template-columns:repeat(6,1fr);gap:8px;padding-bottom:20px;display:grid;overflow-y:auto}@media (width>=480px){.dialog-grid{grid-template-columns:repeat(10,1fr)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes fade-in-up{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.access-gate-capsule{-webkit-backdrop-filter:blur(24px);box-sizing:border-box;background-color:#00000073;border:1px solid #ffffff40;border-radius:9999px;align-items:center;height:54px;padding-left:24px;padding-right:9px;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex;position:relative;box-shadow:0 8px 32px #00000059}.access-gate-capsule:hover{border-color:#fff6}.access-gate-capsule:focus-within{background-color:#000000a6;border-color:#ffffffb3;box-shadow:0 8px 32px #00000080,0 0 0 4px #ffffff26}.access-gate-capsule.has-error{background-color:#000000a6;border:2px solid #f04452;box-shadow:0 8px 32px #f0445266}.access-gate-lock-icon{color:#ffffffbf;flex-shrink:0;justify-content:center;align-items:center;margin-right:16px;display:flex}.access-gate-input{color:#fff;background:0 0;border:none;outline:none;flex:1;min-width:0;margin:0;padding:0;font-size:16px;font-weight:500;line-height:normal}.access-gate-input::placeholder{color:#ffffff73;letter-spacing:normal;font-size:14.5px;font-weight:400}.access-gate-btn{cursor:pointer;color:#ffffff59;background-color:#ffffff26;border:none;border-radius:9999px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;margin:0;padding:0;transition:all .2s cubic-bezier(.16,1,.3,1);display:flex}.access-gate-btn.is-active{color:#191f28;background-color:#fff;box-shadow:0 2px 12px #ffffff59}.access-gate-btn.is-active:hover{transform:scale(1.05)}.access-gate-btn.is-active:active{transform:scale(.95)}.access-gate-btn.is-success{color:#fff;background-color:#34c759}.session-select-trigger{text-align:left;-webkit-user-select:none;user-select:none;justify-content:space-between;align-items:center;display:inline-flex}.session-trigger-title{text-overflow:ellipsis;white-space:nowrap;margin-right:18px;overflow:hidden}.session-overlay-backdrop{z-index:9999;background-color:var(--overlay-backdrop,#000000d9);-webkit-backdrop-filter:var(--overlay-backdrop-blur,blur(28px));padding:max(20px, env(safe-area-inset-top,20px)) 16px max(24px, env(safe-area-inset-bottom,24px));flex-direction:column;justify-content:center;align-items:center;height:100dvh;display:flex;position:fixed;inset:0;overflow:hidden}.session-overlay-content{width:100%;max-width:480px;height:100%;max-height:100%;color:var(--text-primary);font-family:var(--font-family-base);flex-direction:column;display:flex;overflow:hidden}.session-overlay-header{text-align:center;flex-shrink:0;width:100%;margin-bottom:16px}.session-overlay-title{color:var(--text-primary);letter-spacing:var(--letter-spacing-tight);margin-bottom:14px;font-size:19px;font-weight:700}.session-overlay-divider{background:var(--border-default);width:100%;height:1px}.session-overlay-list{-webkit-overflow-scrolling:touch;flex-direction:column;flex:1;gap:6px;min-height:0;padding:4px 6px 4px 0;display:flex;overflow-y:auto}.session-overlay-list::-webkit-scrollbar{width:4px}.session-overlay-list::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:var(--radius-pill)}.session-menu-row{border-radius:var(--radius-md);cursor:pointer;text-align:left;width:100%;transition:all .2s var(--transition-smooth);color:var(--text-primary);background:0 0;border:1px solid #0000;justify-content:space-between;align-items:center;padding:13px 16px;display:flex}.session-menu-row:hover{background:var(--bg-surface-hover);transform:translate(4px)}.session-menu-row:active{background:var(--bg-surface-active);transform:scale(.99)}.session-menu-row.selected{background:var(--brand-primary-soft);border-color:var(--brand-primary)}.session-row-text{flex-direction:column;min-width:0;display:flex}.session-row-title{color:var(--text-primary);letter-spacing:var(--letter-spacing-tight);align-items:baseline;gap:8px;font-size:17px;font-weight:700;display:flex}.session-row-year{color:var(--text-secondary);font-size:13px;font-weight:500}.session-row-sub{color:var(--text-tertiary);margin-top:4px;font-size:13px;font-weight:500}.session-row-icon{flex-shrink:0;justify-content:center;align-items:center;margin-left:16px;display:flex}.session-check-circle{border-radius:var(--radius-pill);background:var(--brand-primary);width:32px;height:32px;box-shadow:0 2px 10px var(--brand-subtle-glow);color:var(--text-inverse);justify-content:center;align-items:center;display:flex}.session-outline-icon{color:var(--text-tertiary);transition:color .2s var(--transition-smooth)}.session-menu-row:hover .session-outline-icon{color:var(--text-primary)}.session-overlay-footer{flex-shrink:0;justify-content:center;align-items:center;padding-top:14px;padding-bottom:2px;display:flex}.session-close-circle-btn{border-radius:var(--radius-pill);width:48px;height:48px;color:var(--text-secondary);cursor:pointer;transition:all .2s var(--transition-smooth);background:0 0;border:none;justify-content:center;align-items:center;display:flex}.session-close-circle-btn:hover{background:var(--bg-surface-hover);color:var(--text-primary);transform:scale(1.08)}.session-close-circle-btn:active{transform:scale(.92)}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-duration{syntax:"*";inherits:false}