:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bling-indigo:#405cee;--bling-content-max:1520px;--bling-header-height:76px;--bling-header-gutter:40px;--bling-logo-size:25px;--bling-control-radius:12px;--bling-card-radius:20px;--bling-dialog-radius:24px;--bling-menu-radius:12px;--bling-backdrop:#0a0d127a;--bling-action-soft:#eef0ff;--bling-action-line:#c9d1fb;--bling-canvas:#f7f9fc;--radius-control:var(--bling-control-radius);--shadow-menu:var(--shadow-overlay);--color-supplementary-1:#b9dcff;--color-supplementary-1-soft:#e6efff;--color-supplementary-2:#ffbab1;--color-supplementary-2-soft:#ffece6;--color-supplementary-3:#ffe58b;--color-supplementary-3-soft:#fff4ca;--color-supplementary-4:#b6ead7;--color-supplementary-4-soft:#e1f4eb;--color-supplementary-5:#d6c7ff;--color-supplementary-5-soft:#efe9ff;--bling-panel-blue:var(--color-supplementary-1);--bling-panel-coral:var(--color-supplementary-2);--bling-panel-yellow:var(--color-supplementary-3);--bling-panel-mint:var(--color-supplementary-4);--bling-panel-lilac:var(--color-supplementary-5);--quiz-answer-a:var(--color-supplementary-1-soft);--quiz-answer-b:var(--color-supplementary-2-soft);--quiz-answer-c:var(--color-supplementary-3-soft);--quiz-answer-d:var(--color-supplementary-4-soft);--quiz-answer-e:var(--color-supplementary-5-soft);--bling-coral:#ff8b82;--bling-yellow:#ffe16b;--bling-sky:#91c7ff;--bling-lilac:#c9b7ff;--bling-mint:#a2e6c6;--bling-grid:linear-gradient(#dce5ef80 1px, transparent 1px), linear-gradient(90deg, #dce5ef80 1px, transparent 1px);--color-ink-panel:#252c37;--color-ink-panel-grid-line:#ffffff09;--bling-grid-dark:linear-gradient(var(--color-ink-panel-grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--color-ink-panel-grid-line) 1px, transparent 1px);--bling-grid-dark-size:24px;--color-ink-panel-text:#fff;--color-ink-panel-text-muted:#b7c6e2;--color-ink-panel-line:#72819a;--color-ink-panel-track:#ffffff30;--color-ink-panel-progress:#8ca9ff;--color-sky-tint:#ebf5ff;--color-canvas-neutral:#f7fafe;--color-paper-white:#fff;--color-bone-white:#fafdff;--color-mist-gray:#f6f7f8;--color-surface-blue:#f1f6fb;--color-surface-mint:#f1f8f4;--color-surface-butter:#fff9e8;--color-surface-peach:#fff4ee;--color-ink:#0a0d12;--color-charcoal:#181d27;--color-graphite:#535862;--color-fog:#5f6b7a;--color-fog-decorative:#93979f;--color-iris-blue:#0069e0;--color-powder-blue:#cce7ff;--color-mint-wash:#d3f6e3;--color-butter-wash:#fff2be;--color-peach-wash:#ffd1b8;--color-iris-violet:#0069e0;--color-lavender-wash:#ebf5ff;--color-spark-yellow:#ffd34e;--color-brand-iris:var(--color-iris-blue);--color-brand-iris-soft:var(--color-sky-tint);--color-brand-powder:var(--color-powder-blue);--color-brand-mint:var(--color-mint-wash);--color-brand-butter:var(--color-butter-wash);--color-brand-peach:var(--color-peach-wash);--color-brand-spark:var(--color-spark-yellow);--gradient-canvas-air:linear-gradient(145deg, #fbfdff 0%, #f1f7fc 58%, #fffaf1 100%);--gradient-workspace-air:linear-gradient(145deg, #f7fafc 0%, #edf4fa 100%);--gradient-paper-spark-air:linear-gradient(145deg, #fcfdff 0%, #f2f8ff 54%, #fffaf0 100%);--font-sans:"Pretendard Variable", Pretendard, "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono:"Cascadia Code", Consolas, monospace;--color-bg-canvas:var(--color-canvas-neutral);--color-bg-page:var(--color-paper-white);--color-bg-elevated:var(--color-paper-white);--color-bg-subtle:var(--color-mist-gray);--color-text:var(--color-ink);--color-text-secondary:var(--color-graphite);--color-text-muted:var(--color-fog);--color-border:#e5eaf0;--color-border-strong:#cbd5df;--color-action:var(--bling-indigo);--color-action-hover:#3048d2;--color-action-on:#fff;--color-accent:var(--color-iris-blue);--color-accent-text:var(--color-iris-blue);--color-accent-bright:#479dff;--color-accent-soft:var(--color-sky-tint);--color-focus:var(--bling-indigo);--color-success:#168a5b;--color-success-text:#0e7149;--color-success-bright:#32bd7c;--color-success-soft:#eaf8f1;--color-warning:#9a6900;--color-warning-bright:#efbd32;--color-warning-soft:#fff8dc;--color-danger:#b7484d;--color-danger-soft:#fff1f1;--color-info:var(--color-iris-blue);--color-info-bright:#479dff;--color-info-soft:var(--color-sky-tint);--color-creative:#c8673f;--color-creative-text:#a64b2e;--color-creative-bright:#ff9b73;--color-creative-soft:#fff1ea;--color-butter:var(--color-butter-wash);--color-butter-strong:#d8aa20;--color-butter-soft:#fff9df;--color-aqua:#72baff;--color-aqua-strong:var(--color-iris-blue);--color-aqua-soft:var(--color-sky-tint);--color-aqua-panel:var(--color-powder-blue);--color-aqua-panel-soft:#eff8ff;--color-coral:#ff9b73;--color-coral-soft:#fff1ea;--color-sky:#479dff;--color-sky-soft:var(--color-sky-tint);--text-xs:.75rem;--text-sm:.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--text-3xl:1.875rem;--text-4xl:2.25rem;--text-display:2.75rem;--line-xs:1.7;--line-sm:1.6;--line-base:1.5;--line-lg:1.4;--line-title:1.15;--weight-regular:400;--weight-medium:500;--weight-semibold:600;--weight-bold:650;--weight-black:700;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem;--radius-sm:.75rem;--radius-md:.75rem;--radius-lg:1.25rem;--radius-xl:1.5rem;--radius-2xl:2.25rem;--radius-round:9999px;--control-height-sm:2rem;--control-height-md:2.75rem;--control-height-lg:3rem;--shadow-rest:0 1px 2px #0a0d120a;--shadow-hover:0 10px 24px #0a0d1214;--shadow-overlay:0 18px 46px #0a0d121f;--shadow-accent:0 1px 2px #0a0d1214;--duration-fast:.12s;--duration-base:.18s;--ease-standard:cubic-bezier(.2, 0, 0, 1);--layout-max:1440px;--lesson-card-width:17rem;--lesson-card-gap:1.25rem;--header-height:72px;--sidebar-width:216px;--page-padding:clamp(1.25rem, 2.8vw, 2.5rem);--breakpoint-viewport-xs:480px;--breakpoint-viewport-sm:768px;--breakpoint-viewport-md:1024px;--breakpoint-viewport-lg:1200px;--student-page-bg:var(--color-bg-canvas);--student-gutter:clamp(16px, 4vw, 40px);--student-page-max:960px;--student-header-height:56px;--student-card-radius:var(--bling-card-radius);--student-card-border:1px solid var(--color-border);--student-card-shadow:var(--shadow-rest);--student-card-padding:clamp(20px, 3vw, 32px);--student-control-radius:var(--bling-control-radius);--student-control-height:clamp(48px, 6vh, 64px);--student-title-size:clamp(24px, 4vw, 36px);--student-title-weight:800;--student-eyebrow-size:12px;--student-eyebrow-color:var(--color-action);--navy:var(--color-ink);--navy-dark:var(--color-charcoal);--indigo:var(--color-iris-blue);--mint:var(--color-success);--coral:var(--color-accent);--paper:var(--color-bg-page);--line:var(--color-border);--muted:var(--color-text-muted);--danger:var(--color-danger);--shadow:var(--shadow-rest)}@media (width<=1200px){:root{--bling-header-gutter:24px}}@media (width<=640px){:root{--bling-header-height:64px;--bling-header-gutter:20px}}*{box-sizing:border-box}html{background:var(--color-bg-canvas);min-width:320px;min-height:100%}body,#root{min-width:320px;min-height:100%;margin:0}body{min-height:100vh;color:var(--color-text);background:var(--color-bg-canvas);font-family:var(--font-sans);font-size:var(--text-base);line-height:var(--line-base);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased}button,input,textarea,select{font:inherit}button{color:inherit}a{color:inherit;text-decoration:none}code{border-radius:var(--radius-sm);background:var(--color-info-soft);font-family:var(--font-mono);padding:.125rem .375rem}::selection{color:var(--color-text);background:var(--color-warning-soft)}:where(a,button,input,textarea,select,summary):focus-visible{outline:3px solid color-mix(in srgb, var(--color-focus) 72%, white);outline-offset:3px}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.ui-icon{stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;fill:none;flex:none;width:1.125rem;height:1.125rem}.ui-button{min-height:var(--control-height-md);justify-content:center;align-items:center;gap:var(--space-2);padding:0 var(--space-4);border-radius:var(--bling-control-radius);font-size:var(--text-sm);font-weight:var(--weight-semibold);cursor:pointer;transition:color var(--duration-fast) var(--ease-standard), background-color var(--duration-fast) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard), box-shadow var(--duration-base) var(--ease-standard), transform var(--duration-fast) var(--ease-standard);border:1px solid #0000;line-height:1;display:inline-flex}.ui-button:active:not(:disabled){transform:translateY(1px)}.ui-button:disabled{opacity:.46;cursor:not-allowed}.ui-button[aria-busy=true]{opacity:1;cursor:progress}.ui-button:focus-visible{outline:3px solid var(--color-focus);outline-offset:2px}.ui-button--primary{color:var(--color-action-on);border-color:var(--color-action);background:var(--color-action)}.ui-button--primary:hover:not(:disabled){background:var(--color-action-hover)}.ui-button--secondary{color:var(--color-text);border-color:var(--color-border-strong);background:var(--color-bg-elevated)}.ui-button--secondary:hover:not(:disabled){border-color:var(--color-text);background:var(--color-bg-subtle)}.ui-button--ghost{color:var(--color-text-secondary);background:0 0;border-color:#0000}.ui-button--ghost:hover:not(:disabled){color:var(--color-text);background:var(--color-bg-subtle)}.ui-button--danger{color:var(--color-danger);border-color:color-mix(in srgb, var(--color-danger) 24%, white);background:var(--color-danger-soft)}.ui-button--sm{min-height:var(--control-height-sm);padding:0 var(--space-3);font-size:var(--text-xs)}.ui-button--lg{min-height:var(--control-height-lg);padding:0 var(--space-6);font-size:var(--text-base)}.ui-button--block{width:100%}.ui-button__spinner{border:2px solid;border-right-color:#0000;border-radius:50%;width:1rem;height:1rem;animation:.7s linear infinite ui-spin}@keyframes ui-spin{to{transform:rotate(1turn)}}.ui-loading-state{width:100%;min-width:0;color:var(--color-text-secondary)}.ui-loading-state--generic{place-items:center;min-height:45vh;padding:clamp(1rem,5vw,2rem);display:grid}.ui-loading-state--compact{width:max-content;min-width:min(12rem,100%);max-width:100%;min-height:0;padding:var(--space-3) var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-round);background:color-mix(in srgb, var(--color-bg-elevated) 94%, transparent);box-shadow:var(--shadow-rest);margin-inline:auto}.ui-loading-state__identity{justify-items:center;gap:var(--space-3);color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--weight-medium);text-align:center;display:grid}.ui-loading-state__identity.has-small-mark{align-items:center;gap:var(--space-3);text-align:left;display:flex}.ui-loading-state__copy{gap:var(--space-1);overflow-wrap:anywhere;word-break:keep-all;min-width:0;line-height:1.6;display:grid}.ui-loading-state__copy strong{color:var(--color-text);font-size:var(--text-sm);font-weight:var(--weight-semibold)}.ui-loading-state__copy>span{color:var(--color-text-secondary);font-size:var(--text-xs)}.has-scene .ui-loading-state__copy strong{font-size:1.125rem}.classroom-shell .ui-loading-visual,.student-shell .ui-loading-visual{display:none}.ui-loading-visual{flex:none;place-items:center;display:grid;position:relative}.ui-loading-visual--small{width:2.25rem;height:2.25rem}.ui-loading-visual--small:before{content:"";border:2px solid #dbe3ff;border-top-color:#6c84ef;border-radius:50%;animation:1.7s linear infinite ui-spin;position:absolute;inset:0}.ui-loading-mark{width:1.5rem;height:1.5rem;display:block;overflow:visible}.ui-loading-visual--scene{width:10.75rem;height:8.5rem}.ui-loading-visual--scene .ui-loading-mark{width:5.25rem;height:5.625rem;animation:2.4s ease-in-out infinite ui-loading-tidy;position:absolute;bottom:1.125rem;left:2.75rem}.ui-loading-visual--scene .ui-loading-mark__eyes{transform-box:fill-box;transform-origin:50%;animation:2.4s ease-in-out infinite ui-loading-blink}.ui-loading-paper{--paper-x:11px;--paper-y:-6px;--paper-turn:-4deg;width:2.75rem;height:3.55rem;animation:2.4s ease-in-out infinite ui-loading-paper;position:absolute;top:3.4rem;left:.8rem;transform:rotate(-15deg)}.ui-loading-paper--two{--paper-x:-10px;--paper-y:0;--paper-turn:3deg;top:3.6rem;left:auto;right:.875rem;transform:rotate(12deg)}.ui-loading-shadow{background:#dce3f4;border-radius:50%;width:5.25rem;height:.625rem;position:absolute;bottom:.5rem}.ui-loading-spark{color:#6c84ef;font-size:1.25rem;animation:2.4s ease-in-out infinite ui-loading-spark;position:absolute;top:.75rem;right:1.3rem}@keyframes ui-loading-tidy{0%,14%,to{transform:rotate(-3deg)}35%{transform:translateY(-6px)rotate(5deg)}60%{transform:translateY(2px)rotate(-5deg)}80%{transform:translateY(-2px)}}@keyframes ui-loading-blink{0%,42%,48%,to{transform:scaleY(1)}45%{transform:scaleY(.12)}}@keyframes ui-loading-paper{40%,70%{transform:translate(var(--paper-x), var(--paper-y)) rotate(var(--paper-turn))}}@keyframes ui-loading-spark{0%,28%,85%,to{opacity:.2;transform:scale(.8)}50%,64%{opacity:1;transform:scale(1)}}.ui-loading-skeleton{gap:var(--space-6);width:min(72rem,100%);padding:var(--space-8) 0 var(--space-16);margin:0 auto;display:grid}.ui-loading-shape{border:1px solid color-mix(in srgb, var(--color-border) 72%, transparent);border-radius:var(--radius-md);background:color-mix(in srgb, var(--color-bg-subtle) 74%, var(--color-sky-tint));display:block;position:relative;overflow:hidden}.ui-loading-shape:after{background:linear-gradient(105deg, transparent 12%, color-mix(in srgb, var(--color-powder-blue) 32%, transparent) 38%, color-mix(in srgb, var(--color-butter-wash) 28%, transparent) 52%, transparent 78%);animation:ui-loading-shimmer 1.4s var(--ease-standard) infinite;content:"";position:absolute;inset:0;transform:translate(-110%)}@keyframes ui-loading-shimmer{to{transform:translate(110%)}}.ui-loading-skeleton__heading{gap:var(--space-2);display:grid}.ui-loading-skeleton__heading .is-kicker{border-radius:var(--radius-round);width:7rem;height:.75rem}.ui-loading-skeleton__heading .is-title{width:min(24rem,64%);height:2.75rem}.ui-loading-skeleton__heading .is-copy{border-radius:var(--radius-round);width:min(31rem,78%);height:1rem}.ui-loading-skeleton--dashboard{grid-template-columns:minmax(0,1fr) minmax(18rem,22rem);align-items:start;gap:1.5rem;width:100%;padding:0}.ui-loading-skeleton__day-main,.ui-loading-skeleton__day-rail{gap:1.25rem;min-width:0;display:grid}.ui-loading-skeleton--dashboard>.ui-loading-skeleton__heading{grid-column:1/-1;align-content:start;min-height:56px}.ui-loading-skeleton--dashboard .is-day-focus{height:15rem}.ui-loading-skeleton--dashboard .is-day-timetable{height:13rem}.ui-loading-skeleton--dashboard .is-day-calendar{height:19rem}.ui-loading-skeleton--dashboard .is-day-info{height:6rem}@media (width<=1180px){.ui-loading-skeleton--dashboard{grid-template-columns:minmax(0,1fr)}.ui-loading-skeleton__day-rail{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (width<=860px){.ui-loading-skeleton__day-rail{grid-template-columns:minmax(0,1fr)}}.ui-loading-skeleton--library .is-library-next{border-radius:var(--radius-xl);height:8.25rem}.ui-loading-skeleton--library .is-library-toolbar{border-radius:var(--radius-xl);height:4.5rem}.ui-loading-skeleton__library-grid{grid-template-columns:repeat(auto-fit, var(--lesson-card-width));gap:var(--lesson-card-gap);display:grid}.ui-loading-skeleton__library-grid .is-library-card{width:var(--lesson-card-width);border-radius:var(--radius-xl);height:21.75rem}.ui-loading-state--editor{background:var(--gradient-workspace-air);height:100dvh;min-height:100dvh;overflow:hidden}.ui-loading-editor{grid-template-rows:4rem minmax(0,1fr);height:100%;display:grid}.ui-loading-editor__topbar{align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-4);border-bottom:1px solid var(--color-border);background:var(--color-bg-elevated);grid-template-columns:6rem minmax(12rem,1fr) 8rem 8rem;display:grid}.ui-loading-editor__topbar .ui-loading-shape{height:2.5rem}.ui-loading-editor__topbar .is-editor-title{width:min(28rem,72%)}.ui-loading-editor__workspace{grid-template-columns:4.5rem 9rem minmax(0,1fr);min-height:0;display:grid}.ui-loading-editor__rail,.ui-loading-editor__thumbnails{align-content:start;gap:var(--space-2);min-height:0;padding:var(--space-2);border-right:1px solid var(--color-border);background:var(--color-bg-elevated);display:grid}.ui-loading-editor__rail .ui-loading-shape{height:3rem}.ui-loading-editor__thumbnails .ui-loading-shape{aspect-ratio:16/9}.ui-loading-editor__canvas{min-width:0;min-height:0;padding:var(--space-6);place-items:center;display:grid;position:relative}.ui-loading-editor__canvas .is-editor-canvas{aspect-ratio:16/9;border-radius:var(--radius-sm);background:color-mix(in srgb, var(--color-bg-elevated) 82%, var(--color-sky-tint));width:min(64rem,88%)}.ui-loading-editor__status{bottom:var(--space-8);align-items:center;gap:var(--space-2) var(--space-3);width:min(34rem,100% - 3rem);padding:var(--space-3) var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-lg);color:var(--color-text);background:color-mix(in srgb, var(--color-bg-elevated) 94%, transparent);box-shadow:var(--shadow-overlay);grid-template-columns:auto minmax(0,1fr);display:grid;position:absolute;left:50%;transform:translate(-50%)}.ui-loading-editor__status .ui-loading-visual{grid-row:1/span 2}.ui-loading-editor__status.has-no-mark,.classroom-shell .ui-loading-editor__status,.student-shell .ui-loading-editor__status{grid-template-columns:minmax(0,1fr)}.ui-loading-editor__status strong{font-size:var(--text-sm);font-weight:var(--weight-semibold)}.ui-loading-editor__status ol{gap:var(--space-2);grid-template-columns:repeat(3,minmax(0,1fr));margin:0;padding:0;list-style:none;display:grid}.ui-loading-editor__status li{align-items:center;gap:var(--space-1);color:var(--color-text-muted);font-size:var(--text-xs);white-space:nowrap;display:flex}.ui-loading-editor__status li>span{border:1px solid var(--color-border-strong);background:var(--color-bg-elevated);border-radius:50%;flex:none;width:.5rem;height:.5rem}.ui-loading-editor__status li[data-state=complete]{color:var(--color-success-text)}.ui-loading-editor__status li[data-state=complete]>span{border-color:var(--color-success-text);background:var(--color-success-soft)}.ui-loading-editor__status li[data-state=current]{color:var(--color-text);font-weight:var(--weight-semibold)}.ui-loading-editor__status li[data-state=current]>span{border-color:var(--color-focus);background:var(--color-info-soft);box-shadow:0 0 0 2px color-mix(in srgb, var(--color-focus) 12%, transparent)}@media (width<=768px){.ui-loading-skeleton{padding:var(--space-6) 0 var(--space-12)}.ui-loading-skeleton__day-rail{grid-template-columns:1fr}.ui-loading-skeleton--dashboard{padding:0}.ui-loading-skeleton__library-grid{grid-template-columns:1fr}.ui-loading-skeleton__library-grid .is-library-card{width:100%}.ui-loading-editor__topbar{grid-template-columns:4rem minmax(0,1fr) 4rem}.ui-loading-editor__topbar .is-editor-action:last-child,.ui-loading-editor__thumbnails{display:none}.ui-loading-editor__workspace{grid-template-columns:4rem minmax(0,1fr)}.ui-loading-editor__status ol{grid-template-columns:1fr}}.ui-loading-state[data-loading-paused=true] *,.ui-loading-state[data-loading-paused=true] :before,.ui-loading-state[data-loading-paused=true] :after{animation-play-state:paused}.ui-loading-state[data-loading-slow=true] *,.ui-loading-state[data-loading-slow=true] :before,.ui-loading-state[data-loading-slow=true] :after{animation:none}@media (prefers-reduced-motion:reduce){.ui-loading-state *,.ui-loading-state :before,.ui-loading-state :after{animation:none!important}}.ui-badge{align-items:center;gap:var(--space-1);border-radius:var(--radius-round);min-height:1.5rem;font-size:var(--text-xs);font-weight:var(--weight-bold);white-space:nowrap;border:1px solid #0000;padding:.1875rem .5rem;line-height:1;display:inline-flex}.ui-badge--neutral{color:var(--color-text-secondary);border-color:var(--color-border);background:var(--color-bg-subtle)}.ui-badge--accent{color:var(--color-iris-blue);border-color:color-mix(in srgb, var(--color-iris-blue) 18%, white);background:var(--color-accent-soft)}.ui-badge--success{color:var(--color-success-text);background:var(--color-success-soft);border-color:#b8d9cd}.ui-badge--info{color:var(--color-info);border-color:color-mix(in srgb, var(--color-info) 18%, white);background:var(--color-info-soft)}.ui-field{gap:var(--space-2);min-width:0;color:var(--color-text-secondary);display:grid}.ui-field__label{font-size:var(--text-sm);font-weight:var(--weight-bold)}.ui-field :where(input,textarea,select){width:100%;min-height:3rem;padding:0 var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);background:var(--color-bg-elevated);transition:border-color var(--duration-fast) var(--ease-standard), box-shadow var(--duration-fast) var(--ease-standard)}.ui-field :where(input,textarea,select):focus{border-color:var(--color-focus);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-focus) 14%, transparent);outline:0}.ui-field__hint,.ui-field__error{font-size:var(--text-xs)}.ui-field__hint{color:var(--color-text-muted)}.ui-field__error{color:var(--color-danger)}.ui-segmented{padding:var(--space-1);border:1px solid var(--color-border);border-radius:var(--radius-round);background:var(--color-bg-elevated);display:inline-flex}.ui-segmented button{min-height:2.25rem;padding:0 var(--space-4);border-radius:var(--radius-round);color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--weight-medium);cursor:pointer;background:0 0;border:0}.ui-segmented button:hover{color:var(--color-text);background:var(--color-bg-subtle)}.ui-segmented button.is-active{color:var(--color-action-on);background:var(--color-charcoal)}.ui-page-header{justify-content:space-between;align-items:end;gap:var(--space-8);padding:var(--space-4) 0 var(--space-8);border-bottom:1px solid var(--color-border);display:flex}.ui-page-header__copy{min-width:0}.ui-page-header__eyebrow{margin-bottom:var(--space-2);color:var(--color-accent-text);font-size:var(--text-xs);font-weight:var(--weight-black);letter-spacing:.08em;text-transform:uppercase;display:block}.ui-page-header__eyebrow .brand-spark{margin-left:var(--space-1);font-size:.95rem;transform:translateY(-1px)}.ui-page-header h1{color:var(--color-text);font-size:clamp(2.25rem, 4.4vw, var(--text-display));font-weight:var(--weight-semibold);line-height:var(--line-title);letter-spacing:-.02em;margin:0}.ui-page-header p{max-width:44rem;margin:var(--space-3) 0 0;color:var(--color-text-secondary);font-size:var(--text-sm);line-height:var(--line-base)}.ui-page-header__actions{align-items:center;gap:var(--space-3);display:flex}.ui-student-avatar{--avatar-size:3rem;width:var(--avatar-size);height:var(--avatar-size);flex:0 0 var(--avatar-size);box-shadow:0 0 0 1px var(--color-border);background:radial-gradient(circle at 35% 24%,#ffffffad,#0000 28%),#eaf7f8;border:2px solid #fff;border-radius:50%;justify-content:center;align-items:center;display:inline-flex;position:relative;overflow:hidden}.ui-student-avatar--sm{--avatar-size:2.25rem}.ui-student-avatar--lg{--avatar-size:4.25rem}.ui-student-avatar--hero{--avatar-size:clamp(8.5rem, 17vw, 12rem);box-shadow:0 0 0 1px var(--color-border), 0 18px 42px #172b3a1f;border-width:4px}.ui-student-avatar__image{object-fit:cover;object-position:center top;width:100%;height:100%}.ui-student-avatar--initial{background:radial-gradient(circle at 35% 24%,#ffffffad,#0000 28%),linear-gradient(140deg,#cfeef2,#a9d8e2)}.ui-student-avatar__initial{font-weight:700;font-size:calc(var(--avatar-size) * .42);color:#1f4a55;-webkit-user-select:none;user-select:none;line-height:1}@media (width<=720px){.ui-page-header{align-items:stretch;gap:var(--space-5);padding-bottom:var(--space-6);flex-direction:column}.ui-page-header__actions{flex-wrap:wrap;width:100%}.ui-page-header__actions>:only-child{width:100%}}:root{--bling-overlay-shadow:0 24px 80px #17243c26}:is(dialog,[role=dialog]):is(.student-entry-guide,.library-class-modal,.lesson-folder-dialog,.bling-settings-dialog,.bling-launch-dialog,.teacher-code-dialog,.progress-dialog,.access-review-dialog,.teacher-day-dialog,.student-deletion-dialog,.teacher-withdrawal-dialog,.quiz-start-dialog,.presentation-editor-v2__leave-dialog){border-radius:var(--bling-dialog-radius);border-color:var(--color-border);background:var(--color-bg-elevated);color:var(--color-text);box-shadow:var(--bling-overlay-shadow)}[role=dialog] :is(h1,h2){letter-spacing:-.035em;line-height:1.3}[role=dialog] :is(input:not([type=checkbox]):not([type=radio]),select,textarea){border-radius:var(--bling-control-radius)}[role=dialog] :is(button,a,input,select,textarea):focus-visible{outline:3px solid var(--color-focus);outline-offset:3px}[role=dialog] :is(.form-error,[role=alert]){overflow-wrap:anywhere;line-height:1.6}.error-panel{background:#fff;border:1px solid #e3d6dc;border-radius:20px;padding:32px;box-shadow:0 8px 32px #24365008}.error-panel strong{font-size:20px;line-height:1.4;display:block}.error-panel details{text-align:left;overflow-wrap:anywhere;background:#f5f7fb;border-radius:12px;margin-top:20px;padding:14px}.ui-loading-state__identity{gap:16px;font-size:15px}.ui-loading-shape{border-radius:12px}.ui-loading-editor__status{background:#ffffffed;border:1px solid #dfe5ef;border-radius:18px;padding:24px}.privacy-page .privacy-policy-document{border-color:#e1e7ef;border-radius:20px;box-shadow:0 8px 28px #25354f06}.privacy-page .privacy-page-header{border-bottom-color:#e1e7ef}.privacy-page .privacy-page-main{padding-block:40px}@media (width<=640px){.error-panel{margin:24px 20px;padding:24px}}[role=dialog] :is(.ui-button,.button){border-radius:var(--bling-control-radius);font-weight:var(--weight-semibold)}.bling-dialog-heading{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.bling-dialog-heading>button{flex:none}:is(.quiz-start-dialog,.library-class-modal,.student-entry-guide)>header>.ui-button{width:auto;height:auto;min-height:var(--control-height-sm);background:0 0;padding-inline:12px;font-size:12px;font-weight:600}