@font-face{font-family:Vazirmatn Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./vazirmatn-arabic-wght-normal.Cafbb7Zc.woff2)format("woff2-variations");unicode-range:U+6??,U+750-77F,U+870-88E,U+890-891,U+897-8E1,U+8E3-8FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC,U+102E0-102FB,U+10E60-10E7E,U+10EC2-10EC4,U+10EFC-10EFF,U+1EE00-1EE03,U+1EE05-1EE1F,U+1EE21-1EE22,U+1EE24,U+1EE27,U+1EE29-1EE32,U+1EE34-1EE37,U+1EE39,U+1EE3B,U+1EE42,U+1EE47,U+1EE49,U+1EE4B,U+1EE4D-1EE4F,U+1EE51-1EE52,U+1EE54,U+1EE57,U+1EE59,U+1EE5B,U+1EE5D,U+1EE5F,U+1EE61-1EE62,U+1EE64,U+1EE67-1EE6A,U+1EE6C-1EE72,U+1EE74-1EE77,U+1EE79-1EE7C,U+1EE7E,U+1EE80-1EE89,U+1EE8B-1EE9B,U+1EEA1-1EEA3,U+1EEA5-1EEA9,U+1EEAB-1EEBB,U+1EEF0-1EEF1}@font-face{font-family:Vazirmatn Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./vazirmatn-latin-ext-wght-normal.tDTa1Fj6.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Vazirmatn Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(./vazirmatn-latin-wght-normal.BFexNX-K.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,::backdrop,:after,:before{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:host,:root{--font-sans:"Vazirmatn Variable", system-ui, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--radius-sm:.25rem;--radius-lg:.5rem;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono);--color-surface:#fff;--color-surface-alt:#f7f7f7;--color-card:#fff;--color-on-surface:#141414;--color-on-surface-muted:#666;--color-border-subtle:#e5e5e5;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-on-primary:#fff;--color-primary-soft:#eff4ff;--color-on-primary-soft:#1d4ed8;--color-success:#15803d;--color-success-soft:#ecfdf3;--color-success-border:#86d9a6;--color-danger:#b42318}}@layer base{*,::backdrop,:after,:before{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}:host,html{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,pre,samp{font-family:var(--default-mono-font-family,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}menu,ol,ul{list-style:none}audio,canvas,embed,iframe,img,object,svg,video{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,optgroup,select,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab,red,red)){::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.fixed{position:fixed}.relative{position:relative}.sticky{position:sticky}.container{width:100%}@media (width>=40rem){.container{max-width:40rem}}@media (width>=48rem){.container{max-width:48rem}}@media (width>=64rem){.container{max-width:64rem}}@media (width>=80rem){.container{max-width:80rem}}@media (width>=96rem){.container{max-width:96rem}}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.list-item{display:list-item}.table{display:table}.shrink{flex-shrink:1}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}:root{--control-h:38px;--control-h-sm:32px;--control-h-lg:46px;--control-px:12px;--control-px-sm:10px;--fs-xs:.75rem;--fs-sm:.8125rem;--fs-control:.875rem;--fs-base:.9375rem;--fs-md:1rem;--fs-lg:1.125rem;--fs-xl:1.375rem;--fs-2xl:1.75rem;--radius-sm:8px;--radius:10px;--radius-lg:14px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--card-pad:16px;--shadow-sm:0 1px 2px #0000001a;--shadow-lg:0 12px 32px #0000001f;--chart-1:#2563eb;--chart-2:#eb6834;--chart-none:#c9c8c2;--chart-grid:#ececea;--chart-axis:#c3c2b7}:root.mode-dark{--color-surface:#111;--color-surface-alt:#1a1a1a;--color-card:#161616;--color-on-surface:#f5f5f5;--color-on-surface-muted:#aaa;--color-border-subtle:#333;--color-primary:#2563eb;--color-primary-hover:#3b73f0;--color-on-primary:#fff;--color-primary-soft:#16223f;--color-on-primary-soft:#93b4fb;--color-success:#4ade80;--color-success-soft:#0d2a1a;--color-success-border:#1f6b3d;--color-danger:#f97066;--chart-2:#d95926;--chart-none:#4a4945;--chart-grid:#2a2a2a;--chart-axis:#3d3d3a;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}body{background:var(--color-surface);color:var(--color-on-surface);font-family:var(--font-sans);font-size:var(--fs-base);margin:0;line-height:1.5}a,button,input,select,textarea{-webkit-tap-highlight-color:transparent;touch-action:manipulation}a,button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}h1,h2,h3,p{margin:0}h1{font-size:var(--fs-xl);letter-spacing:-.02em;font-weight:700;line-height:1.3}h2{font-size:var(--fs-lg)}h2,h3{font-weight:650;line-height:1.4}h3{font-size:var(--fs-md)}p{color:var(--color-on-surface-muted)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.small{font-size:var(--fs-sm)}.muted{color:var(--color-on-surface-muted)}.eyebrow{font-size:var(--fs-xs);letter-spacing:.1em;text-transform:uppercase;font-weight:650}.link{text-underline-offset:4px;text-decoration:underline}.content{unicode-bidi:isolate}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}label{display:block}label>span,legend{margin-bottom:var(--space-1);font-size:var(--fs-sm);color:var(--color-on-surface-muted);font-weight:600;display:block}fieldset{border:0;min-width:0;margin:0}fieldset,legend{padding:0}input:not([type=checkbox]):not([type=radio]):not([type=range]):not([type=file]),select{height:var(--control-h);padding:0 var(--control-px)}input:not([type=checkbox]):not([type=radio]):not([type=range]):not([type=file]),select,textarea{border:1px solid var(--color-border-subtle);border-radius:var(--radius);background:var(--color-surface);width:100%;color:inherit;font-size:var(--fs-control)}textarea{min-height:88px;padding:var(--space-2) var(--control-px);resize:vertical;line-height:1.5}input:focus,select:focus,textarea:focus{border-color:var(--color-primary);outline:3px solid var(--color-primary-soft);outline-offset:0}input[type=checkbox],input[type=radio]{accent-color:var(--color-primary);flex-shrink:0;width:18px;height:18px}@media (width<=700px){input:not([type=checkbox]):not([type=radio]):not([type=range]),select,textarea{font-size:16px}}@supports (appearance:base-select){select{appearance:base-select}::picker(select){appearance:base-select}select{align-items:center;gap:var(--space-2);cursor:pointer;display:flex}select::picker-icon{color:var(--color-on-surface-muted);transition:rotate .15s}select:open::picker-icon{rotate:180deg}::picker(select){position-try-order:normal;min-width:anchor-size(width);overscroll-behavior:contain;border:1px solid var(--color-border-subtle);border-radius:var(--radius);background:var(--color-surface);max-height:min(320px,50dvh);color:var(--color-on-surface);box-shadow:var(--shadow-lg);margin-block:4px;padding:4px;overflow-y:auto}select option{gap:var(--space-2);border-radius:var(--radius-sm);cursor:pointer;min-height:40px;padding:8px 10px}select option:focus-visible,select option:hover{background:var(--color-surface-alt);outline:0}select option:checked{background:var(--color-primary-soft);color:var(--color-on-primary-soft);font-weight:600}select option:disabled{color:var(--color-on-surface-muted);cursor:default}select option::checkmark{color:var(--color-primary)}}.btn{height:var(--control-h);padding:0 var(--control-px);border:1px solid var(--color-border-subtle);border-radius:var(--radius);background:var(--color-surface);color:var(--color-on-surface);font-size:var(--fs-control);white-space:nowrap;justify-content:center;align-items:center;gap:6px;font-weight:600;line-height:1;transition:background .15s,border-color .15s;display:inline-flex}.btn:hover{background:var(--color-surface-alt)}.btn:active{transform:translateY(1px)}.btn.small{height:var(--control-h-sm);padding:0 var(--control-px-sm);font-size:var(--fs-sm)}.btn.btn-lg{height:var(--control-h-lg);padding:0 var(--space-5);font-size:var(--fs-md)}.btn.icon{width:var(--control-h);flex-shrink:0;padding:0}.btn.small.icon{width:var(--control-h-sm)}.btn-primary{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-on-primary)}.btn-primary:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn.ghost{background:0 0;border-color:#0000}.btn.ghost:hover{background:var(--color-surface-alt)}.btn.danger{color:var(--color-danger)}.btn-label{display:inline}@media (width<=640px){.btn-label{display:none}}.spin{animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(1turn)}}main{min-height:70vh}.container{max-width:1160px;padding-inline:var(--space-6);margin-inline:auto}.page{padding-block:var(--space-6) 56px}.stack{gap:var(--space-4);flex-direction:column}.row,.stack{display:flex}.row{align-items:center;gap:var(--space-3);flex-wrap:wrap}.between{justify-content:space-between}.grid{gap:var(--space-3);display:grid}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.field-grid{gap:var(--space-3);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.field-grid .span-2{grid-column:1/-1}.toolbar{justify-content:space-between;align-items:flex-end;gap:var(--space-3);flex-wrap:wrap;display:flex}.toolbar>.row{gap:var(--space-2);align-items:flex-end}.card{background:var(--color-card);border-radius:var(--radius-lg);padding:var(--card-pad)}.badge,.card{border:1px solid var(--color-border-subtle)}.badge{align-items:center;gap:var(--space-1);height:22px;padding:0 var(--space-2);font-size:var(--fs-xs);white-space:nowrap;border-radius:999px;font-weight:600;display:inline-flex}.notice{padding:10px var(--space-3);border:1px dashed var(--color-border-subtle);border-radius:var(--radius);background:var(--color-surface-alt);font-size:var(--fs-sm)}.empty{padding:var(--space-6);text-align:center}.divider{border:0;border-top:1px solid var(--color-border-subtle);margin:0}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%}table,td,th{text-align:start}td,th{padding:10px var(--space-3);border-bottom:1px solid var(--color-border-subtle);white-space:nowrap;font-size:var(--fs-control)}th{font-size:var(--fs-sm);color:var(--color-on-surface-muted);font-weight:600}td.num,th.num{text-align:end;font-variant-numeric:tabular-nums}dialog{width:calc(100% - 32px);max-width:480px;padding:var(--space-5);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-surface);color:var(--color-on-surface);margin:auto}dialog::backdrop{background:#0008}.tabs{gap:var(--space-1);box-shadow:inset 0 -1px 0 var(--color-border-subtle);scrollbar-width:none;display:flex;overflow:auto hidden}.tabs::-webkit-scrollbar{display:none}.tabs>a,.tabs>button{height:var(--control-h);padding:0 var(--space-3);color:var(--color-on-surface-muted);font-size:var(--fs-control);white-space:nowrap;background:0 0;border:0;align-items:center;gap:6px;font-weight:600;display:inline-flex}.tabs>a:hover,.tabs>button:hover{color:var(--color-on-surface)}.tabs>[aria-current=page],.tabs>[aria-selected=true]{color:var(--color-primary);box-shadow:inset 0 -2px 0 var(--color-primary)}.filters{gap:var(--space-3);padding:var(--card-pad);grid-template-columns:minmax(180px,1.6fr) repeat(auto-fit,minmax(0,1fr));grid-auto-flow:column;align-items:end;display:grid}@media (width<=900px){.filters{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-flow:row}.filters>.span-2,.filters>:first-child{grid-column:1/-1}}.kpis{gap:var(--space-3);grid-template-columns:repeat(auto-fit,minmax(160px,1fr));display:grid}.kpi{padding:var(--card-pad);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);flex-direction:column;gap:2px;display:flex}.kpi .kpi-label,.kpi dt{font-size:var(--fs-sm);color:var(--color-on-surface-muted)}.kpi .kpi-value,.kpi dd{font-size:var(--fs-2xl);margin:0;font-weight:700;line-height:1.2}.answer-option{border:1px solid var(--color-border-subtle);border-radius:var(--radius);cursor:pointer;align-items:center;gap:10px;padding:10px 14px;display:flex}.answer-option.selected{border:2px solid var(--color-primary);background:var(--color-primary-soft);padding:9px 13px}.nav-number{width:var(--control-h);height:var(--control-h);border:1px solid var(--color-border-subtle);border-radius:var(--radius-sm);background:var(--color-surface);color:var(--color-on-surface);font-size:var(--fs-control)}.nav-number.answered{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-on-primary);font-weight:700}.nav-number.current{outline:2px solid var(--color-primary);outline-offset:2px}img.diagram{-o-object-fit:contain;object-fit:contain;border-radius:var(--radius);max-width:100%;max-height:300px}.skip{z-index:100;top:-100px;position:fixed;inset-inline-start:10px}.skip:focus{top:10px}.header{z-index:40;border-bottom:1px solid var(--color-border-subtle);background:#ffffffd9;position:sticky;top:0}@supports (color:color-mix(in lab,red,red)){.header{background:color-mix(in srgb,var(--color-surface) 85%,transparent)}}.header{-webkit-backdrop-filter:saturate(1.4)blur(12px);backdrop-filter:saturate(1.4)blur(12px)}.header-inner{gap:var(--space-5);flex-wrap:wrap;min-height:60px;padding-block:11px}.brand,.header-inner{align-items:center;display:flex}.brand{font-size:var(--fs-md);gap:10px;font-weight:750}.brand-icon{border-radius:var(--radius-sm);background:var(--color-primary);color:var(--color-on-primary);padding:6px;display:flex}.brand-logo{-o-object-fit:cover;object-fit:cover;-o-object-position:50% 30%;object-position:50% 30%;width:36px;height:36px;box-shadow:0 0 0 1px var(--color-border-subtle);border-radius:999px;flex-shrink:0}.footer .brand-logo{width:32px;height:32px}.brand-name{white-space:nowrap}.header-nav{gap:var(--space-5);font-size:var(--fs-control);color:var(--color-on-surface-muted);margin-inline:auto;display:flex}.header-nav a:hover,.header-nav a[aria-current=page]{color:var(--color-on-surface)}.controls{gap:var(--space-2);align-items:center;display:flex}.footer{border-top:1px solid var(--color-border-subtle);font-size:var(--fs-sm);padding-block:18px}.auth-card{max-width:460px;margin-inline:auto}.hero{padding-block:var(--space-5);max-width:720px}.hero h1{font-size:clamp(1.9rem,4vw,2.9rem);line-height:1.25}.hero p{max-width:620px;font-size:var(--fs-md)}.bank-card{flex-direction:column;justify-content:space-between;min-height:190px;display:flex;position:relative;overflow:hidden}.bank-card:hover{border-color:var(--color-primary)}.bank-symbol{color:var(--color-border-subtle);inset-inline-end:25px;font-size:60px;position:absolute;top:20px}.stat{font-size:var(--fs-2xl);font-weight:700;line-height:1.2}@media (width<=700px){.field-grid,.grid-2,.grid-3{grid-template-columns:1fr}.container{padding-inline:18px}.page{padding-block:18px 40px}.header-inner{gap:var(--space-3)}.header-nav{gap:var(--space-4);white-space:nowrap;scrollbar-width:none;order:3;width:100%;margin:0;overflow-x:auto}.header-nav::-webkit-scrollbar{display:none}.controls{margin-inline-start:auto}.header-nav.signed-in{display:none}.brand{gap:8px}.bank-card{min-height:170px}}@media (prefers-reduced-motion:reduce){*,:after,:before{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.slider-field{flex-direction:column;gap:6px;display:flex}.slider-field label{font-weight:500}.slider-value{color:var(--color-primary);font-variant-numeric:tabular-nums;font-size:1.15rem;font-weight:700}input[type=range]{width:100%;height:28px;accent-color:var(--color-primary);cursor:pointer;touch-action:pan-y;margin:0}input[type=range]:disabled{cursor:not-allowed;opacity:.5}main:has(>.exam-page){padding-block:10px 0}.exam-page{padding-bottom:calc(64px + env(safe-area-inset-bottom,0px));gap:12px}.exam-page,.exam-top{flex-direction:column;display:flex}.exam-top{gap:6px}.exam-top>.row{flex-wrap:nowrap}.exam-heading{flex-shrink:0}.exam-meta{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.exam-heading{letter-spacing:0;font-size:1.05rem}.exam-progress{align-items:center;gap:10px;display:flex}.exam-segments{flex:1;align-items:stretch;gap:2px;height:10px;display:flex}.exam-segment{background:var(--color-surface-alt);min-width:2px;box-shadow:inset 0 0 0 1px var(--color-border-subtle);border-radius:3px;flex:1;transition:background .2s}.exam-segment.answered{background:var(--color-primary);box-shadow:none}.exam-segment.skipped{background:var(--chart-2);box-shadow:none}.exam-segment.current{box-shadow:0 0 0 2px var(--color-surface),0 0 0 3.5px var(--color-on-surface)}.exam-progress-label{white-space:nowrap;gap:6px;display:flex}.exam-progress-bar{background:var(--color-surface-alt);border:1px solid var(--color-border-subtle);border-radius:99px;flex:1;height:6px;overflow:hidden}.exam-progress-bar>span{background:var(--color-primary);border-radius:inherit;height:100%;transition:width .25s;display:block}.exam-question{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;padding:16px}.exam-content,.exam-question{flex-direction:column;gap:12px;display:flex}.exam-prompt{white-space:pre-wrap;font-size:1.05rem;line-height:1.5}.exam-figure{cursor:zoom-in;background:0 0;border:0;order:2;align-self:center;padding:0;display:flex;position:relative}img.exam-diagram{width:auto;max-height:clamp(110px,100dvh - 545px,320px)}.exam-figure-hint{color:#fff;inset-inline-end:6px;background:#000a;border-radius:7px;padding:5px;display:flex;position:absolute;bottom:6px}.exam-prompt{order:1}.exam-options{order:3}@media (width>=900px){.exam-content.has-figure{-moz-column-gap:20px;grid-template:"figure prompt""figure options"1fr/minmax(0,1fr) minmax(0,1fr);align-items:start;column-gap:20px;display:grid}.has-figure .exam-figure{grid-area:figure}.has-figure .exam-prompt{grid-area:prompt}.has-figure .exam-options{grid-area:options}.has-figure img.exam-diagram{max-height:calc(100dvh - 290px)}}dialog.exam-zoom{cursor:zoom-out;width:auto;max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px);padding:8px}.exam-zoom img{-o-object-fit:contain;object-fit:contain;-webkit-user-select:none;user-select:none;max-width:calc(100vw - 32px);max-height:calc(100dvh - 32px);display:block}.exam-zoom .btn{top:12px;position:absolute;inset-inline-end:12px}@media (width<=700px){:is(body:has(.exam-page) .header-nav,body:has(.study-reader) .header-nav){display:none}.exam-options .answer-option{padding:8px 12px}.exam-options .answer-option.selected{padding:7px 11px}}.exam-options{border:0;flex-direction:column;gap:8px;min-width:0;margin:0;padding:0;display:flex}.exam-bar{z-index:20;background:var(--color-surface);border-top:1px solid var(--color-border-subtle);padding-bottom:env(safe-area-inset-bottom,0);inset-inline:0;position:fixed;bottom:0;box-shadow:0 -4px 16px #0000000d}.exam-bar-inner{align-items:center;gap:8px;padding-block:10px;display:flex}.exam-bar .spacer{flex:1}dialog.exam-sheet{border-bottom:0;border-radius:16px 16px 0 0;width:min(760px,100%);max-width:100%;max-height:75dvh;margin:auto auto 0;padding:0;animation:.2s ease-out sheet-up}.exam-sheet-body{max-height:75dvh;padding:16px 16px calc(16px + env(safe-area-inset-bottom,0px));flex-direction:column;gap:12px;display:flex;overflow-y:auto}@keyframes sheet-up{0%{opacity:0;transform:translateY(24px)}}.exam-map{flex-wrap:wrap;gap:6px;display:flex}.exam-map .nav-number.skipped{border:2px dashed #d97706}.exam-legend{font-size:var(--fs-sm);color:var(--color-on-surface-muted);flex-wrap:wrap;gap:14px;display:flex}.exam-legend span{align-items:center;gap:6px;display:inline-flex}.exam-legend i{border:1px solid var(--color-border-subtle);border-radius:3px;width:12px;height:12px}.exam-legend i.answered{background:var(--color-primary);border-color:var(--color-primary)}.exam-legend i.skipped{border:2px dashed #d97706}.avatar{--avatar-size:36px;width:var(--avatar-size);height:var(--avatar-size);background:linear-gradient(135deg,var(--color-primary),#7c3aed);color:#fff;font-weight:700;font-size:calc(var(--avatar-size)*.38);letter-spacing:.02em;-webkit-user-select:none;user-select:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;line-height:1;display:inline-flex}.account-menu{position:relative}.avatar-button{width:var(--control-h);height:var(--control-h);background:0 0;border:2px solid #0000;border-radius:50%;place-items:center;padding:0;display:grid}.avatar-button:hover,.avatar-button[aria-expanded=true]{border-color:var(--color-primary)}.account-dropdown{z-index:50;border:1px solid var(--color-border-subtle);background:var(--color-card);top:calc(100% + 8px);border-radius:14px;flex-direction:column;gap:4px;width:min(290px,100vw - 24px);padding:8px;display:flex;position:absolute;inset-inline-end:0;box-shadow:0 12px 32px #0000001f}.account-dropdown-head{align-items:center;gap:10px;min-width:0;padding:8px;display:flex}.account-dropdown-head>div{flex-direction:column;min-width:0;display:flex}.account-dropdown-head span,.account-dropdown-head strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.account-dropdown-links{border-block:1px solid var(--color-border-subtle);flex-direction:column;padding-block:4px;display:flex}.account-dropdown-links a,.account-dropdown-logout{color:var(--color-on-surface);font-size:var(--fs-control);text-align:start;background:0 0;border:0;border-radius:8px;align-items:center;gap:10px;padding:8px 10px;display:flex}.account-dropdown-links a:hover,.account-dropdown-logout:hover{background:var(--color-surface-alt)}.account-dropdown-logout{color:var(--color-danger)}.account-dropdown-langs{border-bottom:1px solid var(--color-border-subtle);flex-direction:column;gap:6px;padding:8px 10px;display:flex}.account-dropdown-langs>span{align-items:center;gap:6px;display:flex}.segmented{background:var(--color-surface-alt);border-radius:9px;grid-template-columns:1fr 1fr;gap:2px;padding:3px;display:grid}.segmented button{color:var(--color-on-surface-muted);font-weight:600;font-size:var(--fs-sm);background:0 0;border:0;border-radius:7px;padding:5px 8px}.segmented button[aria-pressed=true]{background:var(--color-card);color:var(--color-primary);box-shadow:0 1px 2px #0000001a}.profile{gap:18px}.profile,.profile-hero{flex-direction:column;display:flex}.profile-hero{text-align:center;align-items:center;gap:6px;padding:24px 16px 8px}.profile-hero .avatar{box-shadow:0 0 0 4px var(--color-surface),0 0 0 6px var(--color-primary-soft);margin-bottom:6px}.profile-hero h1{overflow-wrap:anywhere;font-size:1.4rem}.profile-panel:focus-visible{outline-offset:6px}.profile-form{width:100%;max-width:720px;margin-inline:auto}.history-list{flex-direction:column;gap:8px;display:flex}.history-item{border:1px solid var(--color-border-subtle);background:var(--color-card);border-radius:12px;overflow:hidden}.history-item.open{border-color:var(--color-primary)}.history-row{width:100%;color:inherit;text-align:start;background:0 0;border:0;align-items:center;gap:12px;padding:10px 12px;display:flex}.history-row:hover{background:var(--color-surface-alt)}.history-score{font-variant-numeric:tabular-nums;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;font-weight:700;display:inline-flex}.history-score.good{background:var(--color-success-soft);color:var(--color-success)}.history-score.mid{color:#92400e;background:#fef3c7}.history-score.low{color:#b91c1c;background:#fee2e2}:root.mode-dark .history-score.mid{color:#fbbf24;background:#3b2a0a}:root.mode-dark .history-score.low{color:#f87171;background:#3a1111}.history-main{flex-direction:column;flex:1;min-width:0;display:flex}.history-scope{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.history-side{font-variant-numeric:tabular-nums;flex-direction:column;flex-shrink:0;align-items:flex-end;display:flex}.history-chevron{color:var(--color-on-surface-muted);flex-shrink:0;transition:transform .15s}.history-item.open .history-chevron{transform:rotate(180deg)}.history-preview{flex-direction:column;gap:12px;padding:4px 14px 14px;display:flex}.history-bar{background:var(--color-surface-alt);border-radius:99px;height:8px;display:flex;overflow:hidden}.history-bar .good,.history-counts i.good{background:var(--chart-1)}.history-bar .low,.history-counts i.low{background:var(--chart-2)}.history-bar .none,.history-counts i.none{background:var(--chart-none)}.history-counts{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:0;display:grid}.history-counts>div{background:var(--color-surface-alt);border-radius:10px;padding:8px 10px}.history-counts dt{color:var(--color-on-surface-muted);align-items:center;gap:6px;font-size:.75rem;display:flex}.history-counts i{border-radius:50%;width:8px;height:8px}.history-counts dd{margin:0;font-size:1.05rem;font-weight:700}.history-chips{flex-wrap:wrap;gap:6px;display:flex}@media (width<=520px){.history-counts{grid-template-columns:1fr 1fr}.history-score{width:44px;height:44px;font-size:var(--fs-sm)}}.profile-role{background:var(--color-primary-soft);color:var(--color-on-primary-soft);font-size:var(--fs-sm);border-radius:99px;align-items:center;gap:6px;padding:4px 12px;font-weight:600;display:inline-flex}.profile-role:hover{background:var(--color-primary);color:var(--color-on-primary)}.theme-toggle{width:var(--control-h);border-radius:50%;padding:0}.tabs.center{justify-content:center}@media (width<=520px){.tabs.center>*{padding:0 var(--space-1);flex:1 1 0;justify-content:center}.tabs.center svg{display:none}}.dashboard-charts{gap:var(--space-3);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}@media (width<=900px){.dashboard-charts{grid-template-columns:1fr}}.chart-card{min-width:0}.chart-card>.donut-layout{flex:1;align-content:center}.chart-key{align-items:center;gap:6px;display:inline-flex}.chart-key i{border-top:1px solid var(--color-on-surface-muted);width:16px}.donut-layout{align-items:center;gap:var(--space-5);flex-wrap:wrap;display:flex}.donut{flex-shrink:0;width:168px;height:168px;overflow:visible}.donut-segment{cursor:pointer;outline:none;transition:stroke-width .15s}.donut-value{fill:var(--color-on-surface);font-size:22px;font-weight:700}.donut-label{fill:var(--color-on-surface-muted);font-size:11px}.legend{flex-direction:column;flex:1;gap:2px;min-width:180px;margin:0;padding:0;list-style:none;display:flex}.legend li{align-items:center;gap:var(--space-2);padding:6px var(--space-2);border-radius:var(--radius-sm);font-size:var(--fs-control);grid-template-columns:10px 1fr auto 3.2rem;display:grid}.legend li.active{background:var(--color-surface-alt)}.legend i{border-radius:3px;width:10px;height:10px}.legend .muted,.legend strong{text-align:end;font-variant-numeric:tabular-nums}.colchart-plot{height:200px;margin-top:var(--space-5);margin-inline-start:30px;position:relative}.colchart-grid{border-top:1px solid var(--chart-grid);height:0;position:absolute;inset-inline:0}.colchart-grid:last-child,.colchart-grid[style*="bottom: 0%"]{border-top-color:var(--chart-axis)}.colchart-grid span{font-size:var(--fs-xs);color:var(--color-on-surface-muted);font-variant-numeric:tabular-nums;position:absolute;inset-inline-end:calc(100% + 6px);transform:translateY(-50%)}.colchart-avg{border-top:1px solid var(--color-on-surface-muted);z-index:2;pointer-events:none;height:0;position:absolute;inset-inline:0}.colchart-bars{margin:0;padding:0;list-style:none;position:absolute;inset:0}.colchart-bars,.colchart-bars li{align-items:flex-end;display:flex}.colchart-bars li{flex:1;justify-content:center;height:100%;position:relative}.colchart-bar{background:var(--chart-1);border:0;border-radius:4px 4px 0 0;width:min(24px,60%);padding:0;transition:filter .15s;position:relative}.colchart-bar:focus-visible,.colchart-bar:hover{filter:brightness(1.18)}.colchart-cap{font-size:var(--fs-xs);color:var(--color-on-surface);white-space:nowrap;font-weight:700;bottom:calc(100% + 4px)}.chart-tip,.colchart-cap{position:absolute;left:50%;transform:translate(-50%)}.chart-tip{z-index:5;min-width:150px;max-width:240px;padding:var(--space-2) var(--space-3);border:1px solid var(--color-border-subtle);border-radius:var(--radius);background:var(--color-card);box-shadow:var(--shadow-lg);font-size:var(--fs-sm);pointer-events:none;flex-direction:column;gap:1px;display:flex}.chart-tip.end{left:auto;right:50%;transform:none}.chart-tip strong{font-size:var(--fs-md)}.chart-table summary{width:fit-content;font-size:var(--fs-sm);color:var(--color-primary);cursor:pointer;font-weight:600}.chart-table[open] summary{margin-bottom:var(--space-2)}.hbars{gap:var(--space-2);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.hbars li{align-items:center;gap:var(--space-3);font-size:var(--fs-control);grid-template-columns:minmax(0,2fr) minmax(0,3fr) 3.2rem;display:grid}.hbars-label{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.hbars-track{border-inline-start:1px solid var(--chart-axis);height:12px}.hbars-fill{background:var(--chart-1);border-start-end-radius:4px;border-end-end-radius:4px;min-width:2px;height:100%;display:block}.hbars-value{text-align:end;font-variant-numeric:tabular-nums}@media (width<=520px){.hbars li{grid-template-columns:minmax(0,1fr) 3.2rem}.hbars-track{grid-area:2/1/auto/-1}}.access-notice{gap:var(--space-4);border-color:var(--color-primary);background:var(--color-primary-soft);align-items:flex-start;display:flex}.access-notice-icon{border-radius:var(--radius);background:var(--color-card);color:var(--color-primary);flex-shrink:0;padding:10px;display:flex}.access-pill{border:1px solid var(--color-border-subtle);height:26px;font-size:var(--fs-sm);border-radius:999px;align-items:center;gap:6px;padding:0 10px;font-weight:600;display:inline-flex}.state-dot{background:var(--color-on-surface-muted);border-radius:50%;flex-shrink:0;width:8px;height:8px}.state-dot[data-state=active],.state-dot[data-state=published],.state-dot[data-state=teacher]{background:var(--color-success)}.state-dot[data-state=draft],.state-dot[data-state=pending],.state-dot[data-state=scheduled]{background:#d97706}.state-dot[data-state=disabled],.state-dot[data-state=expired]{background:#dc2626}.footer-grid{gap:var(--space-6);padding-block:var(--space-6);grid-template-columns:2fr 1fr 1fr;display:grid}.footer-links{font-size:var(--fs-control);flex-direction:column;gap:6px;display:flex}.footer-links a:hover{color:var(--color-primary)}.footer-bottom{padding-block:var(--space-4);border-top:1px solid var(--color-border-subtle)}@media (width<=700px){.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>:first-child{grid-column:1/-1}.header-signin{display:none}}.landing{gap:72px}.landing,.landing-section{flex-direction:column;display:flex}.landing-section{gap:var(--space-6)}.landing [id],.landing-section{scroll-margin-top:84px}.landing h2{letter-spacing:-.02em;font-size:clamp(1.4rem,3vw,1.9rem)}.landing-kicker{font-size:var(--fs-sm);color:var(--color-primary);font-weight:700}.landing-heading{gap:var(--space-2);max-width:640px}.landing-heading,.landing-hero{text-align:center;flex-direction:column;align-items:center;margin-inline:auto;display:flex}.landing-hero{gap:var(--space-4);max-width:820px;padding-top:var(--space-6);position:relative}.landing-hero:before{content:"";z-index:-1;aspect-ratio:1;filter:blur(18px);pointer-events:none;background:radial-gradient(circle at 50% 40%,#60a5fa2b,#0000 62%),radial-gradient(circle at 50% 70%,#a78bfa24,#0000 60%);border-radius:50%;width:min(720px,100%);margin-inline:auto;position:absolute;inset-block-start:-8%;inset-inline:0}.landing-hero h1{letter-spacing:-.035em;text-wrap:balance;font-size:clamp(2rem,5.2vw,3.6rem);line-height:1.12}.landing-lead{max-width:620px;font-size:var(--fs-lg);text-wrap:pretty;line-height:1.6}.landing-eyebrow{align-items:center;gap:var(--space-2);width:fit-content;height:30px;padding:0 var(--space-3);border:1px solid var(--color-border-subtle);background:var(--color-card);font-size:var(--fs-sm);border-radius:999px;font-weight:600;display:inline-flex}.landing-eyebrow-dot{background:var(--color-primary);width:8px;height:8px;box-shadow:0 0 0 4px var(--color-primary-soft);border-radius:50%}.landing-portrait{border:4px solid var(--color-card);background:var(--color-surface-alt);width:132px;height:132px;box-shadow:var(--shadow-lg);border-radius:50%;place-items:center;display:grid;overflow:hidden}.landing-portrait img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%}.landing-hero-teacher{margin:calc(var(--space-2)*-1) 0 0;flex-direction:column;gap:2px;display:flex}.landing-hero-actions{margin-top:var(--space-1);justify-content:center}.landing-hero-stat{align-items:center;gap:var(--space-2);font-size:var(--fs-sm);margin:0;display:inline-flex}.landing-hero-stat svg{color:var(--color-success)}.landing-highlights{justify-content:center;gap:var(--space-5) 48px;width:100%;margin:var(--space-2) 0 0;padding-top:var(--space-5);border-top:1px solid var(--color-border-subtle);flex-wrap:wrap;display:flex}.landing-highlights div{flex-direction:column-reverse;display:flex}.landing-highlights dd{font-size:var(--fs-2xl);margin:0;font-weight:750}.landing-highlights dt{font-size:var(--fs-sm);color:var(--color-on-surface-muted)}.landing-stats{border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.landing-stats div{padding:var(--space-5) var(--space-3);flex-direction:column;align-items:center;display:flex}.landing-stats div+div{border-inline-start:1px solid var(--color-border-subtle)}.landing-stats strong{font-size:var(--fs-2xl);font-weight:750}.landing-stats span{font-size:var(--fs-sm);color:var(--color-on-surface-muted)}.landing-about{grid-template-columns:minmax(0,320px) minmax(0,1fr);align-items:start;gap:48px;display:grid}.landing-about-photo{aspect-ratio:1;background:var(--color-surface-alt);border-radius:24px;place-items:center;display:grid;overflow:hidden}.landing-about-photo img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%}.landing-role{color:var(--color-on-surface);font-weight:600}.landing-prose{font-size:var(--fs-md);white-space:pre-line;line-height:1.75}.landing-chips{gap:var(--space-2);flex-wrap:wrap;display:flex}.landing-chip{height:30px;padding:0 var(--space-3);background:var(--color-primary-soft);color:var(--color-on-primary-soft);font-size:var(--fs-sm);border-radius:999px;align-items:center;font-weight:600;display:inline-flex}.landing-philosophy{gap:var(--space-2);margin:var(--space-2) 0 0;padding:var(--space-5);border-inline-start:4px solid var(--color-primary);border-radius:var(--radius);background:var(--color-surface-alt);flex-direction:column;display:flex}.landing-philosophy svg{color:var(--color-primary)}.landing-philosophy p{white-space:pre-line;line-height:1.75}.landing-features{gap:var(--space-4);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.landing-feature{gap:var(--space-2);padding:var(--space-6);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);flex-direction:column;transition:border-color .2s,transform .2s;display:flex}.landing-feature:hover{border-color:var(--color-primary);transform:translateY(-2px)}.landing-feature-icon{width:44px;height:44px;margin-bottom:var(--space-2);border-radius:var(--radius);background:var(--color-primary-soft);color:var(--color-primary);place-items:center;font-size:22px;display:grid}.landing-books{justify-content:center;gap:var(--space-4);grid-template-columns:repeat(auto-fit,minmax(180px,230px));display:grid}.landing-book{gap:var(--space-3);padding:var(--space-3);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);flex-direction:column;display:flex}.landing-book-cover{aspect-ratio:3/4;border-radius:var(--radius);background:linear-gradient(135deg,var(--color-primary-soft),var(--color-surface-alt));color:var(--color-primary);place-items:center;display:grid;overflow:hidden}.landing-book-cover img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%}.landing-timelines{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:48px;display:grid}.landing-timeline{flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.landing-timeline li{padding-inline-start:var(--space-6);padding-bottom:var(--space-5);border-inline-start:2px solid var(--color-border-subtle);flex-direction:column;gap:2px;display:flex;position:relative}.landing-timeline li:last-child{padding-bottom:0}.landing-timeline li:before{content:"";border:2px solid var(--color-primary);background:var(--color-surface);top:4px;border-radius:50%;width:12px;height:12px;position:absolute;inset-inline-start:-7px}.landing-timeline-years{font-size:var(--fs-sm);color:var(--color-primary);font-weight:700}.landing-steps{gap:var(--space-4);grid-template-columns:repeat(3,minmax(0,1fr));margin:0;padding:0;list-style:none;display:grid}.landing-steps li{gap:var(--space-2);flex-direction:column;display:flex}.landing-step-number{background:var(--color-primary);width:36px;height:36px;color:var(--color-on-primary);border-radius:50%;place-items:center;font-weight:700;display:grid}.landing-plans{justify-content:center;gap:var(--space-4);grid-template-columns:repeat(auto-fit,minmax(240px,300px));display:grid}.landing-plan{gap:var(--space-3);padding:var(--space-6);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);flex-direction:column;display:flex;position:relative}.landing-plan.featured{border:2px solid var(--color-primary);box-shadow:0 12px 32px #2563eb26}.landing-plan-badge{padding:3px var(--space-3);background:var(--color-primary);color:var(--color-on-primary);font-size:var(--fs-xs);white-space:nowrap;top:-12px;border-radius:999px;font-weight:700;position:absolute;inset-inline-start:50%;translate:-50%}[dir=rtl] .landing-plan-badge{translate:50%}.landing-price{flex-direction:column;display:flex}.landing-price strong{font-size:2rem;font-weight:750;line-height:1.15}.landing-price span{font-size:var(--fs-sm);color:var(--color-on-surface-muted)}.landing-plan-features{gap:var(--space-2);font-size:var(--fs-control);flex-direction:column;flex:1;margin:0;padding:0;list-style:none;display:flex}.landing-plan-features li{gap:var(--space-2);align-items:flex-start;display:flex}.landing-plan-features svg{color:var(--color-primary);flex-shrink:0;margin-top:3px}.landing-faq{gap:var(--space-2);flex-direction:column;width:100%;max-width:760px;margin-inline:auto;display:flex}.landing-faq details{border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card)}.landing-faq summary{justify-content:space-between;align-items:center;gap:var(--space-3);padding:var(--space-4) var(--space-5);cursor:pointer;font-weight:600;list-style:none;display:flex}.landing-faq summary::-webkit-details-marker{display:none}.landing-faq summary svg{flex-shrink:0;transition:transform .2s}.landing-faq details[open] summary svg{transform:rotate(180deg)}.landing-faq details p{padding:0 var(--space-5) var(--space-4);white-space:pre-line;line-height:1.7}.landing-cta{gap:var(--space-6);color:#fff;background:linear-gradient(135deg,#1d4ed8,#6d28d9);border-radius:24px;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);align-items:center;padding:40px;scroll-margin-top:84px;display:grid}.landing-cta p{color:#dbeafe}.landing-cta-button{color:#1d4ed8;background:#fff;border-color:#fff}.landing-cta-button:hover{background:#eff6ff}.landing-contact{padding:var(--space-5);gap:var(--space-3);border-radius:var(--radius-lg);background:#ffffff1a;flex-direction:column;margin:0;list-style:none;display:flex}.landing-contact li{align-items:center;gap:var(--space-3);display:flex}.landing-contact a:hover{text-decoration:underline}@media (width<=900px){.landing{gap:56px}.landing-about,.landing-cta{grid-template-columns:1fr}.landing-hero{padding-top:var(--space-4)}.landing-portrait{width:108px;height:108px}.landing-about-photo{max-width:240px}.landing-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.landing-stats div:nth-child(3){border-inline-start:0}.landing-stats div:nth-child(n+3){border-top:1px solid var(--color-border-subtle)}.landing-steps{grid-template-columns:1fr}.landing-features{grid-template-columns:repeat(2,minmax(0,1fr))}.landing-cta{padding:var(--space-6)}}@media (width<=560px){.landing-features{grid-template-columns:1fr}}.reveal{opacity:0;transition:opacity .6s,transform .6s cubic-bezier(.2,.7,.2,1);transition-delay:var(--reveal-delay,0s);transform:translateY(18px)}.reveal.is-visible{opacity:1;transform:none}@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}.header-exam,.header-study{white-space:nowrap}@media (width<=640px){.header-exam{width:var(--control-h);justify-content:center;padding:0}.header .controls{flex-shrink:0;gap:6px}.header .brand{flex:0 auto;min-width:0}.header-inner:has(.header-nav.signed-in){flex-wrap:nowrap}.header .brand-name{white-space:normal;max-width:6.5em;font-size:var(--fs-sm);line-height:1.15;overflow:hidden}}@media (width<=380px){.brand-name{display:none}}.account-dropdown-sep{background:var(--color-border-subtle);height:1px;margin:4px 0;display:block}@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-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}.admin-head{gap:var(--space-2);margin-bottom:var(--space-5);flex-direction:column;display:flex}.admin-head .eyebrow{color:var(--color-primary);align-items:center;gap:6px;display:flex}.stat-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;display:grid}.stat-card{flex-direction:column;gap:6px;display:flex}.stat-card:hover{border-color:var(--color-primary)}.stat-bar{background:var(--color-surface-alt);border-radius:99px;height:6px;display:flex;overflow:hidden}.stat-bar>span:first-child{background:var(--color-primary)}.stat-bar>span:nth-child(2){background:var(--color-on-surface-muted);opacity:.45}.stat-legend{font-size:var(--fs-xs);color:var(--color-on-surface-muted);flex-wrap:wrap;gap:10px;display:flex}.stat-legend strong{color:var(--color-on-surface)}.tree,.tree ul{margin:0;padding:0;list-style:none}.tree{border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);overflow:hidden}.tree>li+li{border-top:1px solid var(--color-border-subtle)}.tree ul{border-inline-start:1px solid var(--color-border-subtle);margin-inline-start:22px}.tree-row{align-items:center;gap:var(--space-2);min-height:46px;padding:4px var(--space-2);grid-template-columns:minmax(0,1fr) 10rem auto;display:grid}.tree-grade>.tree-row,.tree-row:hover{background:var(--color-surface-alt)}.tree-toggle{min-width:0;color:inherit;text-align:start;border-radius:var(--radius-sm);background:0 0;border:0;flex:1;align-items:center;gap:8px;padding:4px;display:flex}.tree-toggle>.chevron{color:var(--color-on-surface-muted);flex-shrink:0;transition:transform .15s}.tree-toggle[aria-expanded=true]>.chevron{transform:rotate(90deg)}.tree-toggle[aria-expanded=true]>.chevron:is(:lang(ae),:lang(ar),:lang(arc),:lang(bcc),:lang(bqi),:lang(ckb),:lang(dv),:lang(fa),:lang(glk),:lang(he),:lang(ku),:lang(mzn),:lang(nqo),:lang(pnb),:lang(ps),:lang(sd),:lang(ug),:lang(ur),:lang(yi)){transform:rotate(-90deg)}.tree-title{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-weight:600;overflow:hidden}.tree-chapter .tree-title{font-weight:550}.tree-section .tree-title{font-weight:450}.tree-kind{color:var(--color-primary);flex-shrink:0}.tree-meta{flex-shrink:0;justify-content:flex-end;align-items:center;gap:6px;display:flex}.tree-count{font-size:var(--fs-xs);color:var(--color-on-surface-muted);white-space:nowrap;font-variant-numeric:tabular-nums}.tree-actions{flex-shrink:0;gap:2px;display:flex}.tree-actions .btn:not(.icon){justify-content:flex-start;min-width:8.5rem}.tree-empty{font-size:var(--fs-sm);color:var(--color-on-surface-muted);padding:8px 12px}@media (width<=640px){.tree ul{margin-inline-start:12px}.tree-row{flex-wrap:wrap;padding-inline:4px;display:flex}.tree-actions .btn:not(.icon){min-width:0}.tree-toggle{flex-basis:100%}.tree-meta{margin-inline-start:30px}.tree-actions{margin-inline-start:auto}}.filter-summary{font-size:var(--fs-sm);color:var(--color-on-surface-muted);flex-wrap:wrap;align-items:center;gap:8px;display:flex}.q-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,270px),1fr));align-items:start;gap:10px;display:grid}.q-card{border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);font-size:var(--fs-control);flex-direction:column;gap:8px;padding:12px;transition:border-color .15s,box-shadow .15s;display:flex;position:relative}.q-card:hover{border-color:var(--color-primary);box-shadow:0 2px 10px #2563eb14}.q-card:has(.q-open:focus-visible){outline:2px solid var(--color-primary);outline-offset:2px}.q-open{border-radius:inherit;z-index:1;background:0 0;border:0;position:absolute;inset:0}.q-open:focus-visible{outline:none}.q-head{min-width:0;font-size:var(--fs-xs);color:var(--color-on-surface-muted);align-items:center;gap:6px;display:flex}.q-path{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.q-prompt{color:var(--color-on-surface);white-space:pre-line;overflow-wrap:anywhere;-webkit-line-clamp:4;-webkit-box-orient:vertical;font-weight:600;line-height:1.45;display:-webkit-box;overflow:hidden}.q-prompt.empty{color:var(--color-on-surface-muted);font-style:italic;font-weight:400}.q-thumb{-o-object-fit:contain;object-fit:contain;border-radius:var(--radius-sm);background:var(--color-surface-alt);width:100%;max-height:130px}.q-options{flex-direction:column;gap:3px;margin:0;padding:0;list-style:none;display:flex}.q-options li{border-radius:var(--radius-sm);overflow-wrap:anywhere;align-items:flex-start;gap:6px;padding:3px 6px;line-height:1.4;display:flex}.q-options li>span:nth-child(2){-webkit-line-clamp:2;-webkit-box-orient:vertical;flex:1;min-width:0;display:-webkit-box;overflow:hidden}.q-options li.correct{background:var(--color-success-soft);color:var(--color-success);font-weight:600}.q-letter,.q-options li.blank>span:nth-child(2){color:var(--color-on-surface-muted)}.q-letter{width:18px;height:18px;font-size:var(--fs-xs);background:var(--color-surface-alt);border-radius:5px;flex-shrink:0;justify-content:center;align-items:center;margin-top:1px;font-weight:700;display:inline-flex}.q-options li.correct .q-letter{background:var(--color-success);color:var(--color-card)}.q-foot{font-size:var(--fs-xs);color:var(--color-on-surface-muted);justify-content:space-between;gap:6px;margin-top:auto;display:flex}.q-foot,.q-state{align-items:center}.q-state{flex-shrink:0;gap:5px;font-weight:600;display:inline-flex}.admin-editor-dialog{border-radius:var(--radius-lg);max-height:calc(100dvh - 32px);margin:auto;padding:0;overflow:hidden;box-shadow:0 20px 60px #0000003d}.admin-editor-dialog[open]{flex-direction:column;display:flex}.admin-editor-dialog.wide{max-width:1040px}.admin-editor-dialog.narrow{max-width:520px}.dlg-head{border-bottom:1px solid var(--color-border-subtle);justify-content:space-between;align-items:center;gap:10px;padding:10px 12px 10px 16px;display:flex}.dlg-head h2{font-size:var(--fs-md)}.dlg-form{flex-direction:column;flex:1;min-height:0;display:flex}.dlg-body{overscroll-behavior:contain;flex:1;min-height:0;padding:14px 16px;overflow-y:auto}.dlg-foot{border-top:1px solid var(--color-border-subtle);background:var(--color-surface-alt);flex-wrap:wrap;align-items:center;gap:8px;padding:10px 16px;display:flex}.dlg-foot .spacer{flex:1}.dlg-context{font-size:var(--fs-sm);color:var(--color-on-surface-muted);overflow-wrap:anywhere;align-items:center;gap:6px;display:flex}body:has(.admin-editor-dialog[open]){overflow:hidden}@media (width<=640px){.admin-editor-dialog,.admin-editor-dialog.narrow,.admin-editor-dialog.wide{border:0;border-radius:0;width:100%;max-width:none;height:100dvh;max-height:100dvh}}.qe-layout{grid-template-columns:minmax(0,1fr) 260px;align-items:start;gap:16px;display:grid}.qe-main{gap:12px;min-width:0}.qe-main,.qe-side{flex-direction:column;display:flex}.qe-side{border-radius:var(--radius);background:var(--color-surface-alt);border:1px solid var(--color-border-subtle);gap:10px;padding:12px}@media (width<=800px){.qe-layout{grid-template-columns:1fr}.qe-side{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));display:grid}}.qe-options{flex-direction:column;gap:6px;display:flex}.qe-options legend{align-items:baseline;gap:6px;margin-bottom:4px;display:flex}.qe-option{border:1px solid var(--color-border-subtle);border-radius:var(--radius-sm);background:var(--color-surface);align-items:center;gap:6px;padding:3px;padding-inline-start:8px;display:flex}.qe-option:focus-within{border-color:var(--color-primary)}.qe-option.correct{border-color:var(--color-success-border);background:var(--color-success-soft)}.qe-option.correct .q-letter{background:var(--color-success);color:var(--color-card)}.admin .qe-option input:not([type=radio]){background:0 0;border:0;outline:none;padding-inline:4px}.qe-option input[type=radio]{accent-color:var(--color-success);width:16px;height:16px}.qe-preview{border-radius:var(--radius);border:1px dashed var(--color-border-subtle);flex-direction:column;gap:10px;padding:14px;display:flex}.qe-preview .answer-option{cursor:default;padding:10px 12px}.qe-preview .answer-option.selected{padding:9px 11px}.img-drop{border:1.5px dashed var(--color-border-subtle);border-radius:var(--radius);color:var(--color-on-surface-muted);cursor:pointer;align-items:center;gap:10px;padding:10px 12px;transition:border-color .15s,background .15s;display:flex;position:relative}.img-drop.dragging,.img-drop:focus-within,.img-drop:hover{border-color:var(--color-primary);background:var(--color-primary-soft);color:var(--color-on-primary-soft)}.img-drop strong{color:var(--color-on-surface);font-size:var(--fs-control)}.img-drop.dragging strong,.img-drop:hover strong{color:inherit}.img-drop input[type=file]{opacity:0;width:1px;height:1px;position:absolute}.img-drop-icon{border-radius:var(--radius-sm);background:var(--color-surface-alt);color:var(--color-primary);flex-shrink:0;padding:7px;display:flex}.img-field{border:1px solid var(--color-border-subtle);border-radius:var(--radius);align-items:flex-start;gap:12px;padding:8px;display:flex}.img-field.dragging{border-color:var(--color-primary);background:var(--color-primary-soft)}.img-field img{-o-object-fit:contain;object-fit:contain;border-radius:var(--radius-sm);background:var(--color-surface-alt);flex-shrink:0;width:150px;height:104px}.img-field>div{flex-direction:column;flex:1;gap:8px;min-width:0;display:flex}@media (width<=480px){.img-field{flex-direction:column}.img-field img{width:100%;height:160px}}label.btn.disabled{opacity:.55;pointer-events:none}.chips{gap:var(--space-2);flex-wrap:wrap;align-self:end;display:flex}.chip{height:var(--control-h);padding:0 var(--control-px);border:1px solid var(--color-border-subtle);background:var(--color-surface);color:var(--color-on-surface);font-size:var(--fs-control);border-radius:999px;align-items:center;gap:6px;font-weight:600;display:inline-flex}.chip>span:last-child{color:var(--color-on-surface-muted);font-variant-numeric:tabular-nums}.chip[aria-pressed=true]{border-color:var(--color-primary);background:var(--color-primary-soft);color:var(--color-on-primary-soft)}.student-list{border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);margin:0;padding:0;list-style:none;overflow:hidden}.student-row{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--card-pad);grid-template-columns:auto minmax(0,1.2fr) minmax(0,1.4fr) auto auto;display:grid}.student-row+.student-row{border-top:1px solid var(--color-border-subtle)}.student-main,.student-plan{flex-direction:column;align-items:flex-start;gap:2px;min-width:0;display:flex}.student-main>*,.student-plan>span{text-overflow:ellipsis;white-space:nowrap;max-width:100%;overflow:hidden}.student-actions{gap:var(--space-1);justify-content:flex-end;display:flex}.activation-preview{align-items:center;gap:var(--space-2);border-style:solid;border-color:var(--color-primary);background:var(--color-primary-soft);color:var(--color-on-primary-soft);display:flex}@media (width<=800px){.student-row{grid-template-columns:auto minmax(0,1fr) auto}.student-plan{grid-area:2/2/auto/-1}.student-joined{display:none}}.website-editor{padding-bottom:72px}.website-editor>section[id]{scroll-margin-top:var(--space-5)}.loc-field{gap:var(--space-1);flex-direction:column;flex:1;min-width:0;display:flex}.loc-inputs{gap:var(--space-2);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.loc-lang{font-size:var(--fs-xs);font-weight:600}@media (width<=640px){.loc-inputs{grid-template-columns:1fr}}.list-item{gap:var(--space-3);padding:var(--space-3);border:1px solid var(--color-border-subtle);border-radius:var(--radius);background:var(--color-surface);align-items:flex-start;display:flex}.list-item.compact{padding:var(--space-2)}.list-actions{flex-shrink:0;gap:2px;display:flex}@media (width<=640px){.list-item{flex-direction:column;align-items:stretch}.list-actions{justify-content:flex-end}}.image-picker{align-items:center;gap:var(--space-3);display:flex}.image-picker-preview{border:1px solid var(--color-border-subtle);background:var(--color-surface-alt);width:88px;height:88px;color:var(--color-on-surface-muted);border-radius:50%;flex-shrink:0;place-items:center;display:grid;overflow:hidden}.image-picker.cover .image-picker-preview{border-radius:var(--radius-sm);width:72px;height:96px}.image-picker-preview img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%}label.check{align-items:center;gap:var(--space-2);min-height:var(--control-h);font-size:var(--fs-control);font-weight:600;display:flex}.plan-admin-grid{gap:var(--space-3);grid-template-columns:repeat(auto-fill,minmax(220px,1fr));display:grid}.plan-admin{gap:var(--space-2);padding:var(--card-pad);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);flex-direction:column;display:flex}.plan-admin.muted{opacity:.65}.plan-admin-price{font-size:var(--fs-xl);font-weight:700}.save-bar{inset-inline:0;z-index:20;justify-content:flex-end;align-items:center;gap:var(--space-3);padding:10px max(var(--space-6),calc(50vw - 580px + var(--space-6)));padding-bottom:calc(10px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--color-border-subtle);background:var(--color-surface);display:flex;position:fixed;bottom:0;box-shadow:0 -4px 16px #0000000d}.save-bar.dirty .small{color:#b45309;font-weight:600}.tab-count{background:var(--color-surface-alt);min-width:20px;height:18px;color:var(--color-on-surface-muted);font-size:var(--fs-xs);font-variant-numeric:tabular-nums;border-radius:999px;place-items:center;padding:0 5px;display:inline-grid}.tabs>[aria-selected=true] .tab-count{background:var(--color-primary-soft);color:var(--color-on-primary-soft)}.tab-dirty{background:#d97706;border-radius:50%;width:7px;height:7px}.track-kinds{gap:var(--space-2);border:0;margin:0;padding:0;display:grid}.track-kinds legend{font-size:var(--fs-sm);margin-bottom:6px;font-weight:600}.track-kinds .answer-option>span{flex-direction:column;display:flex}.track-kinds:disabled .answer-option{cursor:not-allowed;opacity:.7}.lesson-link{gap:var(--space-3);align-items:start;display:grid}@media (width>=560px){.lesson-link:has(.lesson-thumb){grid-template-columns:minmax(0,1fr) 160px}}.lesson-thumb{aspect-ratio:16/9;-o-object-fit:cover;object-fit:cover;border-radius:var(--radius);border:1px solid var(--color-border-subtle);width:160px}.tree-track>.tree-row .tree-title{font-weight:600}.tree-kind-lessons{color:var(--chart-2)}.lesson-grid{gap:var(--space-3);grid-template-columns:repeat(auto-fill,minmax(min(100%,240px),1fr));display:grid}.lesson-card{flex-direction:column;padding:0;display:flex;overflow:hidden}.lesson-card-thumb{aspect-ratio:16/9;background:#000;position:relative}.lesson-card-thumb img{-o-object-fit:cover;object-fit:cover;width:100%;height:100%}.lesson-card-thumb .lesson-duration{inset-inline-end:8px;color:#fff;font-size:var(--fs-xs);background:#000c;border-radius:5px;padding:1px 6px;position:absolute;bottom:8px}.lesson-card-body{padding:var(--space-3);flex-direction:column;flex:1;gap:6px;display:flex}.lesson-card-body h3{font-size:var(--fs-md,1rem)}.lesson-card-foot{margin-top:auto}.lesson-card-foot,.report-card-head{align-items:center;gap:6px;display:flex}.report-card-head{min-width:0;font-size:var(--fs-sm);color:var(--color-on-surface-muted)}.report-card-head .q-path{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.report-count{background:color-mix(in srgb,var(--color-danger) 10%,transparent);color:var(--color-danger);border-color:#0000}.report-question{gap:var(--space-3);align-items:flex-start;display:flex}.report-question .q-prompt{white-space:pre-wrap;flex:1}.report-question .q-thumb{flex-shrink:0;width:120px}.report-list{border-top:1px solid var(--color-border-subtle);margin:0;padding:0;list-style:none}.report-list,.report-list li{flex-direction:column;display:flex}.report-list li{border-bottom:1px solid var(--color-border-subtle);gap:4px;padding-block:10px}.report-line{align-items:center;gap:6px;display:flex}.report-line .spacer{flex:1}.report-message{white-space:pre-wrap}.report-edited{color:var(--color-success)}.report-actions{justify-content:flex-end;gap:var(--space-2);flex-wrap:wrap;display:flex}.report-reason{background:var(--color-surface-alt);border:1px solid var(--color-border-subtle);font-size:var(--fs-sm);border-radius:999px;padding:2px 10px;font-weight:600}.breadcrumbs{color:var(--color-on-surface-muted);flex-wrap:wrap;align-items:center;gap:4px;display:flex}.breadcrumbs a{color:inherit}.breadcrumbs a:hover{color:var(--color-primary)}.study-tracks{gap:var(--space-3);grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));display:grid}.study-exam-tool,.study-track{align-items:flex-start;gap:var(--space-3);padding:var(--card-pad);border:1px solid var(--color-border-subtle);border-radius:var(--radius-lg);background:var(--color-card);color:inherit;text-decoration:none;transition:border-color .15s,box-shadow .15s;display:flex}.study-exam-tool:hover,.study-track:hover{border-color:var(--color-primary);box-shadow:0 4px 14px #0000000f}.study-track h2{font-size:var(--fs-lg)}.study-exam-tool{align-items:center}.study-exam-tool>div{flex:1}.study-track-icon{border-radius:var(--radius);background:var(--color-primary-soft);width:44px;height:44px;color:var(--color-on-primary-soft);flex-shrink:0;place-items:center;display:grid}.study-track-icon[data-kind=lessons]{background:color-mix(in srgb,var(--chart-2) 14%,transparent);color:var(--chart-2)}.study-bar{background:var(--color-surface-alt);border:1px solid var(--color-border-subtle);border-radius:99px;height:6px;margin-top:4px;display:block;overflow:hidden}.study-bar>span{border-radius:inherit;background:var(--color-primary);height:100%;transition:width .25s;display:block}.study-bar.small-bar{max-width:240px;height:4px}.study-chapter h2{align-items:center;gap:var(--space-2);font-size:var(--fs-lg);display:flex}.study-chapter-number{background:var(--color-surface-alt);min-width:28px;height:28px;font-size:var(--fs-sm);border-radius:99px;place-items:center;display:inline-grid}.study-sections{flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.study-sections li+li{border-top:1px solid var(--color-border-subtle)}.study-section{align-items:center;gap:var(--space-3);color:inherit;border-radius:var(--radius-sm);padding:10px 4px;text-decoration:none;display:flex}.study-section:hover strong{color:var(--color-primary)}.study-section[aria-disabled=true]{pointer-events:none;opacity:.55}.study-section-mark{color:var(--color-on-surface-muted);display:flex}.study-section.done .study-section-mark{color:var(--color-success)}.study-section.started .study-section-mark{color:var(--color-primary)}.study-section-main{flex:1;gap:2px;min-width:0}.study-reader,.study-section-main{flex-direction:column;display:flex}.study-reader{padding-bottom:calc(64px + env(safe-area-inset-bottom,0px));gap:12px}.study-question-number{outline:none;font-weight:600}.answer-option.locked{cursor:default}.answer-option.correct{border:2px solid var(--color-success);background:var(--color-success-soft);padding:9px 13px}.answer-option.incorrect{border:2px solid var(--color-danger);background:color-mix(in srgb,var(--color-danger) 10%,transparent);padding:9px 13px}.answer-option .option-mark{flex-shrink:0;width:20px;height:20px}.answer-option.correct .option-mark{color:var(--color-success)}.answer-option.incorrect .option-mark{color:var(--color-danger)}.answer-option input:disabled{cursor:default}.study-verdict{border-radius:var(--radius);background:var(--color-surface-alt);border-inline-start:4px solid var(--color-primary);flex-direction:column;gap:6px;padding:10px 14px;display:flex}.study-verdict strong{align-items:center;gap:6px;display:flex}.study-verdict.correct{border-inline-start-color:var(--color-success)}.study-verdict.correct strong{color:var(--color-success)}.study-verdict.incorrect{border-inline-start-color:var(--color-danger)}.study-verdict.incorrect strong{color:var(--color-danger)}.study-finished h2{align-items:center;gap:8px;display:flex}.lesson-page{gap:var(--space-3);flex-direction:column;display:flex}.lesson-layout{gap:var(--space-4);align-items:start;display:grid}@media (width>=960px){.lesson-layout{grid-template-columns:minmax(0,1fr) 340px}.lesson-list{top:calc(76px + env(safe-area-inset-top,0px));max-height:calc(100dvh - 100px);position:sticky;overflow-y:auto}}.lesson-video{aspect-ratio:16/9;border-radius:var(--radius-lg);background:#000;max-width:100%;position:relative;overflow:hidden}.lesson-poster,.lesson-video iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.lesson-poster{cursor:pointer;background:#000;place-items:center;padding:0;display:grid}.lesson-poster img{-o-object-fit:cover;object-fit:cover;opacity:.85;width:100%;height:100%;transition:opacity .2s;position:absolute;inset:0}.lesson-poster:focus-visible img,.lesson-poster:hover img{opacity:1}.lesson-play{background:var(--color-primary);color:#fff;border-radius:99px;place-items:center;width:72px;height:72px;transition:transform .15s;display:grid;position:relative;box-shadow:0 6px 24px #0006}.lesson-poster:focus-visible .lesson-play,.lesson-poster:hover .lesson-play{transform:scale(1.08)}.lesson-poster:focus-visible{outline:3px solid var(--color-primary);outline-offset:-3px}.lesson-duration{inset-inline-end:10px;color:#fff;font-size:var(--fs-sm);font-variant-numeric:tabular-nums;background:#000c;border-radius:6px;padding:2px 8px;position:absolute;bottom:10px}.lesson-title{font-size:var(--fs-lg);outline:none}.lesson-description{white-space:pre-wrap;color:var(--color-on-surface-muted)}.lesson-actions{flex-wrap:wrap}.lesson-actions .spacer{flex:1}.lesson-list{gap:var(--space-2);padding:var(--space-3)}.lesson-list,.lesson-list ol{flex-direction:column;display:flex}.lesson-list ol{gap:2px;margin:0;padding:0;list-style:none}.lesson-item{align-items:center;gap:var(--space-3);border-radius:var(--radius);width:100%;min-height:48px;color:inherit;text-align:start;cursor:pointer;background:0 0;border:0;padding:8px 10px;display:flex}.lesson-item:hover{background:var(--color-surface-alt)}.lesson-item[aria-current=true]{background:var(--color-primary-soft);color:var(--color-on-primary-soft)}.lesson-item-mark{background:var(--color-surface-alt);width:28px;height:28px;font-size:var(--fs-sm);font-variant-numeric:tabular-nums;border-radius:99px;flex-shrink:0;place-items:center;display:grid}.lesson-item.watched .lesson-item-mark{color:var(--color-success)}.lesson-item[aria-current=true] .lesson-item-mark{background:var(--color-primary);color:#fff}.lesson-item-main{flex-direction:column;gap:2px;min-width:0;display:flex}.grade-options{gap:var(--space-2);grid-template-columns:repeat(auto-fill,minmax(140px,1fr));display:grid}.grade-option{min-height:var(--control-h-lg);border:1px solid var(--color-border-subtle);border-radius:var(--radius);cursor:pointer;align-items:center;gap:8px;padding:8px 12px;display:flex}.grade-option.selected{border:2px solid var(--color-primary);background:var(--color-primary-soft);padding:7px 11px}@media (prefers-reduced-motion:reduce){.lesson-play,.lesson-poster img,.study-bar>span{transition:none}}.scope-track{margin-top:var(--space-2);text-transform:none;font-weight:600}.learn-track{margin-top:var(--space-3);font-size:var(--fs-lg);align-items:center;gap:8px;display:flex}.report-button{width:var(--control-h-sm);height:var(--control-h-sm);background:var(--color-surface-alt);color:var(--color-on-surface-muted);cursor:pointer;border:0;border-radius:999px;flex-shrink:0;place-items:center;padding:0;transition:background .15s,color .15s;display:grid}.report-button:focus-visible,.report-button:hover{background:color-mix(in srgb,var(--color-danger) 12%,transparent);color:var(--color-danger)}.report-button.reported{background:var(--color-success-soft);color:var(--color-success)}.question-head{justify-content:space-between;align-items:center;gap:var(--space-2);display:flex}.report-reasons{border:0;flex-direction:column;gap:6px;margin:0;padding:0;display:flex}.report-reasons legend{margin-bottom:6px;font-weight:600}.report-done{color:var(--color-success);vertical-align:-3px}.scope-option{align-items:flex-start;gap:var(--space-3);cursor:pointer;display:flex}.scope-option>input{margin-top:3px}.scope-option>:not(input):not(.badge){flex:0 auto;min-width:0}.scope-option>.badge{flex-shrink:0}.scope-section{padding-inline-start:30px}@media (width<=640px){.scope-section{padding-inline-start:22px}}.choice-field{border:0;min-width:0;margin:0;padding:0}.choice-field legend{font-size:var(--fs-sm);margin-bottom:6px;font-weight:600}.bank-choices{gap:var(--space-2);grid-template-columns:1fr 1fr;display:grid}.bank-choices .grade-option small{margin-inline-start:auto}@media (width<=400px){.bank-choices .grade-option small{display:none}}.flip-x:is(:lang(ae),:lang(ar),:lang(arc),:lang(bcc),:lang(bqi),:lang(ckb),:lang(dv),:lang(fa),:lang(glk),:lang(he),:lang(ku),:lang(mzn),:lang(nqo),:lang(pnb),:lang(ps),:lang(sd),:lang(ug),:lang(ur),:lang(yi)){transform:scaleX(-1)}.arrow:after{content:"←";margin-inline-start:.4em;transition:transform .2s;display:inline-block}[dir=ltr] .arrow:after{content:"→"}.arrow:hover:after{transform:translate(-3px)}[dir=ltr] .arrow:hover:after{transform:translate(3px)}