@font-face{font-family:Temml;src:url(/assets/Temml-CCjoacWt.woff2)format("woff2");font-weight:400;font-style:normal}math{font-size-adjust:none;text-indent:0;text-transform:none;letter-spacing:normal;word-wrap:normal;font-feature-settings:"dtls" off;direction:ltr;font-family:Cambria Math,STIXTwoMath-Regular,NotoSansMath-Regular,math;font-style:normal;font-weight:400;line-height:normal}math *{border-color:currentColor}math.tml-display{width:100%;display:block}.mathcal{font-feature-settings:"ss01"}math .mathscr,mo.tml-prime{font-family:Temml}mfrac>:nth-child(2),msqrt,mover>:first-child{math-shift:compact}.menclose{padding:.5ex 0;display:inline-block;position:relative}.tml-cancelto{background-color:currentColor;padding:.5ex 0;display:inline-block;position:absolute;top:0;left:0;-webkit-mask-image:url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg'><defs><marker id='a' markerHeight='5' markerUnits='strokeWidth' markerWidth='7' orient='auto' refX='7' refY='2.5'><path fill='black' d='m0 0 7 2.5L0 5z'/></marker></defs><line x2='100%25' y1='100%25' stroke='black' stroke-width='.06em' marker-end='url(%23a)' vector-effect='non-scaling-stroke'/></svg>");mask-image:url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg'><defs><marker id='a' markerHeight='5' markerUnits='strokeWidth' markerWidth='7' orient='auto' refX='7' refY='2.5'><path fill='black' d='m0 0 7 2.5L0 5z'/></marker></defs><line x2='100%25' y1='100%25' stroke='black' stroke-width='.06em' marker-end='url(%23a)' vector-effect='non-scaling-stroke'/></svg>");-webkit-mask-position:0 0;mask-position:0 0;-webkit-mask-size:100% 100%;mask-size:100% 100%;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat}@supports ((-moz-appearance:none)){.tml-vec{transform:scale(.75)}.ff-narrow{width:0}.ff-nudge-left{margin-left:-.2em}.ff-squash mtd{height:0;display:block}}@supports not ((-moz-appearance:none)){mo.tml-prime{font-family:Temml}.tml-sml-pad{padding-left:.05em}.tml-med-pad{padding-left:.1em}.tml-lrg-pad{padding-left:.15em}}@supports ((-webkit-backdrop-filter:blur(1px))){.wbk-acc{transform:translateY(.431em)}.wbk-sml{transform:translate(.07em)}.wbk-sml-acc{transform:translate(.07em,.431em)}.wbk-sml-vec{transform:scale(.75)translate(.07em)}.wbk-med{transform:translate(.14em)}.wbk-med-acc{transform:translate(.14em,.431em)}.wbk-med-vec{transform:scale(.75)translate(.14em)}.wbk-lrg{transform:translate(.21em)}.wbk-lrg-acc{transform:translate(.21em,.431em)}.wbk-lrg-vec{transform:scale(.75)translate(.21em)}}menclose{-webkit-print-color-adjust:exact;print-color-adjust:exact}.tml-right{text-align:right}.tml-left{text-align:left}.tml-shift-left{margin-left:-200%}@supports (not ((-webkit-backdrop-filter:blur(1px)))) and (not ((-moz-appearance:none))){.chr-sml{transform:translate(.07em)}.chr-sml-vec{transform:scale(.75)translate(.07em)}.chr-med{transform:translate(.14em)}.chr-med-vec{transform:scale(.75)translate(.14em)}.chr-lrg{transform:translate(.21em)}.chr-lrg-vec{transform:scale(.75)translate(.21em)}.tml-shift-left{margin-left:-100%}menclose{padding:.5ex 0;position:relative}.tml-overline{border-top:.065em solid;padding:.1em 0 0}.tml-underline{border-bottom:.065em solid;padding:0 0 .1em}.tml-cancel{background-color:currentColor;width:100%;height:100%;display:inline-block;position:absolute;bottom:0;left:.5px}.upstrike{clip-path:polygon(.05em 100%,0 calc(100% - .05em),calc(100% - .05em) 0,100% .05em)}.downstrike{clip-path:polygon(0 .05em,.05em 0,100% calc(100% - .05em),calc(100% - .05em) 100%)}.sout{clip-path:polygon(0 calc(55% + .0333em),0 calc(55% - .0333em),100% calc(55% - .0333em),100% calc(55% + .0333em))}.tml-xcancel{clip-path:polygon(.05em 0,0 .05em,calc(50% - .05em) 50%,0 calc(100% - .05em),.05em 100%,50% calc(50% + .05em),calc(100% - .05em) 100%,100% calc(100% - .05em),calc(50% + .05em) 50%,100% .05em,calc(100% - .05em) 0%,50% calc(50% - .05em))}.longdiv-top{border-top:.067em solid;padding:.1em .2em .2em .433em}.longdiv-arc{clip-path:inset(0 0 0 .4em);box-sizing:border-box;border:.067em solid;border-radius:70%;width:.7em;position:absolute;top:0;bottom:.1em;left:-.4em;transform:translateY(-.067em)}.menclose{text-align:left;display:inline-block;position:relative}.phasor-bottom{border-bottom:.067em solid;padding:.2em .2em .1em .6em}.phasor-angle{aspect-ratio:.5;clip-path:polygon(.05em 100%,0 calc(100% - .05em),calc(100% - .05em) 0,100% .05em);background-color:currentColor;height:100%;display:inline-block;position:absolute;bottom:-.04em;left:.5px}.tml-fbox{border:1px solid;padding:3pt}.circle-pad{padding:.267em}.textcircle{border:.067em solid;border-radius:50%;position:absolute;inset:0}.actuarial{border-style:solid;border-width:.08em .08em 0 0;margin-right:.03889em;padding:.03889em .03889em 0}.tml-tilde-2{transform:scale(2,1.1)}.tml-tilde-3{transform:scale(3,1.1)}.tml-tilde-4{transform:scale(4,1.1)}.tml-hat-1{transform:scaleX(1.9)}.tml-hat-2{transform:scaleX(3.9)}.tml-hat-3{transform:scaleX(5.8)}.tml-hat-4{transform:scaleX(7.8)}.tml-right{text-align:-webkit-right}.tml-left{text-align:-webkit-left}}.special-fraction{font-family:STIX TWO,Times New Roman,Times,Tinos,serif}math{flex-wrap:wrap;align-items:baseline;display:inline-flex}math>mrow{padding:.5ex 0}mtable.tml-jot mtd{padding-top:.7ex;padding-bottom:.7ex}mtable.tml-small mtd{padding-top:.35ex;padding-bottom:.35ex}@-moz-document url-prefix(){math{display:inline}math>mrow{padding:0}mtd,mtable.tml-small mtd{padding-top:0;padding-bottom:0}mtable.tml-jot mtd{padding-top:.2ex;padding-bottom:0.ex}}.tml-eqn:before{counter-increment:tmlEqnNo;content:"(" counter(tmlEqnNo) ")"}body{counter-reset:tmlEqnNo}@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--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{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{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}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, 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;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{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{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,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-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-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}.relative{position:relative}.static{position:static}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.table{display:table}.h-1{height:calc(var(--spacing) * 1)}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.italic{font-style:italic}.underline{text-decoration-line:underline}.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{--ink:#111827;--muted:#64748b;--line:#e7eaf2;--indigo:#4f46e5;--indigo-dark:#3730a3;--surface:#fff;--canvas:#f6f7fb}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--canvas);color:var(--ink);margin:0;font-family:Pretendard,Noto Sans KR,Apple SD Gothic Neo,Arial,sans-serif}button,input{font:inherit}button{cursor:pointer}.app-shell{min-height:100vh}.topbar{border-bottom:1px solid var(--line);z-index:40;background:#fff;align-items:center;gap:36px;height:76px;padding:0 max(28px,50vw - 700px);display:flex;position:sticky;top:0}.brand{color:var(--ink);align-items:center;gap:11px;min-width:210px;text-decoration:none;display:flex}.brand>div:last-child{flex-direction:column;line-height:1.05;display:flex}.brand strong{letter-spacing:-.5px;font-size:20px}.brand span{color:#7b8190;letter-spacing:.04em;margin-top:5px;font-size:10px;font-weight:700}.brand-mark{background:#25256f;border-radius:9px;flex:none;width:36px;height:36px;position:relative;transform:rotate(45deg);box-shadow:0 7px 18px #3730a338}.brand-mark span{background:#fff;border-radius:2px;height:4px;position:absolute;transform:rotate(-45deg)}.brand-mark span:first-child{width:13px;top:9px;left:8px}.brand-mark span:nth-child(2){width:18px;top:17px;left:9px}.brand-mark span:nth-child(3){width:10px;top:24px;left:16px}.main-nav{flex:1;align-items:stretch;gap:6px;height:100%;display:flex}.main-nav button{color:#697386;background:0 0;border:0;align-items:center;gap:7px;padding:0 15px;font-size:14px;font-weight:650;display:flex;position:relative}.main-nav button.active:after{content:"";background:var(--indigo);border-radius:3px 3px 0 0;height:3px;position:absolute;bottom:-1px;left:14px;right:14px}.header-actions{align-items:center;gap:13px;display:flex}.role-switch{background:#f1f3f8;border-radius:10px;padding:4px;display:flex}.role-switch button{color:#687085;background:0 0;border:0;border-radius:7px;padding:7px 11px;font-size:12px;font-weight:700}.role-switch button.selected{color:var(--indigo-dark);background:#fff;box-shadow:0 2px 6px #0f172a14}.profile-button{color:#263142;background:0 0;border:0;align-items:center;gap:7px;font-size:13px;display:flex}.profile-button span{color:#fff;background:#20245d;border-radius:10px;place-items:center;width:32px;height:32px;font-weight:800;display:grid}.mobile-menu,.mobile-nav{display:none}.page-wrap{max-width:1400px;margin:0 auto;padding:48px 28px 72px}.welcome-row{border-bottom:1px solid #dfe3eb;justify-content:space-between;align-items:flex-end;min-height:196px;padding:4px 4px 33px;display:flex}.welcome-row h1 em{color:var(--indigo);font-style:normal}.welcome-row p{color:var(--muted);margin:0;font-size:16px}.badge{letter-spacing:.04em;white-space:nowrap;border-radius:7px;align-items:center;gap:5px;width:max-content;padding:5px 9px;font-size:10px;font-weight:800;line-height:1;display:inline-flex}.badge-indigo{color:#4338ca;background:#eeedff}.badge-green{color:#087a55;background:#e6f8f0}.badge-orange{color:#b45309;background:#fff2df}.badge-gray{color:#667085;background:#f1f3f6}.badge-red{color:#b42318;background:#fff0ef}.primary-cta{background:var(--indigo);color:#fff;border:0;border-radius:12px;align-items:center;gap:10px;padding:15px 21px;font-weight:750;display:flex;box-shadow:0 12px 28px #4f46e53b}.primary-cta:hover,.publish-button:hover{background:var(--indigo-dark);transform:translateY(-1px)}.success-banner{color:#126644;background:#eaf8f1;border:1px solid #c5ecd9;border-radius:12px;align-items:center;gap:10px;margin-top:18px;padding:13px 16px;font-size:13px;display:flex}.success-banner span{flex:1}.success-banner strong{margin-right:6px}.success-banner button{color:#126644;background:0 0;border:0;font-weight:750}.metric-grid{grid-template-columns:repeat(4,1fr);gap:15px;margin:24px 0;display:grid}.metric-card{border:1px solid var(--line);background:#fff;border-radius:14px;align-items:flex-start;gap:14px;min-height:128px;padding:20px;display:flex;box-shadow:0 4px 16px #252b4809}.metric-icon{border-radius:11px;place-items:center;width:40px;height:40px;display:grid}.metric-icon svg{width:20px}.metric-icon.blue{color:#0284c7;background:#e8f5ff}.metric-icon.orange{color:#ea580c;background:#fff1e6}.metric-icon.green{color:#059669;background:#e7f8f0}.metric-copy{flex-direction:column;flex:1;min-width:0;display:flex}.metric-copy>span{color:#697386;font-size:12px;font-weight:650}.metric-copy>strong{letter-spacing:-1px;margin:4px 0 1px;font-size:27px}.metric-copy>small{color:#9097a5;font-size:10px}.tiny-progress{background:#e6e8ed;border-radius:4px;height:3px;margin-top:8px;overflow:hidden}.tiny-progress i{background:#0ea5e9;height:100%;display:block}.content-grid{grid-template-columns:minmax(0,1.65fr) minmax(360px,.85fr);gap:18px;display:grid}.panel{border:1px solid var(--line);background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 5px 22px #252b4809}.panel-heading{justify-content:space-between;align-items:center;padding:21px 22px 16px;display:flex}.panel-heading h2{letter-spacing:-.5px;margin:3px 0 0;font-size:19px}.eyebrow{color:#8b93a4;letter-spacing:.15em;font-size:9px;font-weight:800}.text-button{color:#697386;background:0 0;border:0;align-items:center;gap:5px;font-size:12px;display:flex}.assignment-list{border-top:1px solid #eef0f4}.assignment-row{border-bottom:1px solid #eef0f4;grid-template-columns:42px 1.5fr 1fr auto 46px 24px;align-items:center;gap:12px;min-height:76px;padding:12px 18px;display:grid}.assignment-row:last-child{border-bottom:0}.assignment-symbol{color:#4f46e5;background:#f0f0ff;border-radius:10px;place-items:center;width:38px;height:38px;display:grid}.assignment-info{flex-direction:column;gap:4px;display:flex}.assignment-info strong{font-size:13px}.assignment-info span,.assignment-due{color:#8a92a1;font-size:10px}.assignment-due{align-items:center;gap:5px;display:flex}.assignment-rate{text-align:right;font-size:13px}.assignment-row>button{color:#9aa1af;background:0 0;border:0;padding:0}.live-dot{color:#087a55;background:#e8f8f1;border-radius:20px;padding:6px 10px 6px 21px;font-size:10px;font-weight:750;position:relative}.live-dot:before{content:"";background:#10b981;border-radius:50%;width:5px;height:5px;position:absolute;top:10px;left:10px;box-shadow:0 0 0 3px #c9f2e2}.student-list{border-top:1px solid #eef0f4}.student-row{border-bottom:1px solid #eef0f4;grid-template-columns:38px 1fr auto 10px;align-items:center;gap:11px;min-height:69px;padding:10px 20px;display:grid}.student-avatar{color:#fff;border-radius:10px;place-items:center;width:35px;height:35px;font-size:13px;font-weight:800;display:grid}.student-row>div{flex-direction:column;gap:3px;display:flex}.student-row strong{font-size:12px}.student-row small{color:#8a92a1;font-size:9px}.student-score{text-align:right}.status-dot{background:#10b981;border-radius:50%;width:7px;height:7px}.status-dot.waiting{background:#cbd0da}.code-note{color:#5b55a0;background:#f6f5ff;border-radius:9px;align-items:center;gap:8px;margin:15px 17px 17px;padding:10px 12px;font-size:10px;display:flex}.flow-strip{color:#fff;background:#20245d;border-radius:16px;justify-content:space-between;align-items:center;gap:20px;margin-top:18px;padding:22px 30px;display:flex;box-shadow:0 12px 32px #20245d26}.flow-strip>div{flex:1 1 0;grid-template-rows:auto auto;grid-template-columns:36px minmax(0,1fr) 34px;align-items:center;column-gap:13px;min-width:0;display:grid}.flow-strip>div>span{color:#676b97;grid-area:1/3/3;place-self:center end;font-size:22px;font-weight:800;line-height:1;position:static}.flow-strip>div>svg{color:#a9adf5;background:#343872;border-radius:10px;grid-area:1/1/3;width:35px;height:35px;padding:8px}.flow-strip strong{white-space:nowrap;grid-area:1/2;min-width:0;font-size:12px}.flow-strip small{color:#aeb2d0;white-space:nowrap;grid-area:2/2;min-width:0;margin-top:4px;font-size:9px}.flow-strip>svg{color:#686d9a;flex:0 0 18px;width:18px}.student-login-page{grid-template-columns:1fr 1fr;align-items:center;max-width:1200px;min-height:calc(100vh - 76px);margin:0 auto;padding:60px 30px;display:grid}.login-card{border:1px solid var(--line);background:#fff;border-radius:22px;max-width:490px;padding:44px;box-shadow:0 24px 70px #262b5817}.login-icon{color:#4f46e5;background:#ecebff;border-radius:16px;place-items:center;width:54px;height:54px;margin-bottom:20px;display:grid}.login-card h1{letter-spacing:-1.5px;margin:15px 0 10px;font-size:36px;line-height:1.2}.login-card>p{color:#7b8495;margin:0 0 28px;font-size:14px}.login-card form>label{color:#4b5565;font-size:11px;font-weight:750}.code-input{border:1px solid #d7dbe4;border-radius:12px;align-items:center;gap:10px;height:54px;margin-top:7px;padding-left:15px;display:flex;overflow:hidden}.code-input.has-error{border-color:#ef4444}.code-input svg{color:#8a92a1}.code-input input{letter-spacing:.06em;border:0;outline:0;flex:1;height:100%;font-weight:750}.code-input button{color:#fff;background:#4f46e5;border:0;place-items:center;width:54px;height:100%;display:grid}.form-error{color:#dc2626;align-items:center;gap:5px;margin-top:7px;font-size:10px;display:flex}.demo-codes{border-top:1px solid #edf0f4;flex-direction:column;gap:7px;margin-top:26px;padding-top:20px;display:flex}.demo-codes>span{color:#9198a7;letter-spacing:.1em;margin-bottom:2px;font-size:9px;font-weight:800}.demo-codes button{color:#334155;background:#fafbfc;border:1px solid #e5e8ee;border-radius:9px;align-items:center;gap:8px;height:39px;padding:0 11px;font-size:11px;display:flex}.demo-codes button i{border-radius:50%;width:7px;height:7px}.demo-codes button strong{color:#6b7280;letter-spacing:.05em;margin-left:auto;font-size:10px}.login-side{place-items:center;height:520px;display:grid;position:relative}.orbit{border:1px solid #dcdff5;border-radius:50%;place-items:center;width:310px;height:310px;display:grid;position:relative;box-shadow:0 0 0 52px #eeedff6b,0 0 0 104px #f4f4fba6}.orbit:before,.orbit:after{content:"";border-radius:50%;position:absolute}.orbit:before{background:#f97316;width:13px;height:13px;top:19px;left:55px;box-shadow:196px 212px #0ea5e9}.orbit:after{background:#4f46e5;width:8px;height:8px;top:102px;right:5px}.orbit-core{background:#fff;border:1px solid #e8e9f2;border-radius:42px;flex-direction:column;justify-content:center;align-items:center;gap:14px;width:150px;height:150px;display:flex;transform:rotate(-4deg);box-shadow:0 25px 50px #3730a32e}.orbit-core .brand-mark{width:47px;height:47px}.orbit-core strong{font-size:20px}.floating-chip{z-index:2;background:#fff;border:1px solid #e6e8ef;border-radius:12px;align-items:center;gap:8px;padding:12px 15px;font-size:11px;font-weight:750;display:flex;position:absolute;box-shadow:0 12px 28px #1c234a1a}.floating-chip svg{color:#10b981;width:18px}.chip-one{top:76px;left:26px}.chip-two{bottom:83px;right:9px}.chip-two svg{color:#f97316}.student-workspace{max-width:1100px}.student-hero{justify-content:space-between;align-items:center;margin-bottom:22px;display:flex}.student-hero>div{align-items:center;gap:15px;display:flex}.student-avatar.large{border-radius:16px;width:56px;height:56px;font-size:20px}.student-avatar.small{border-radius:8px;width:29px;height:29px;font-size:10px}.student-hero h1{letter-spacing:-.8px;margin:6px 0 3px;font-size:26px}.student-hero p{color:#7a8292;margin:0;font-size:12px}.logout-button{color:#687085;background:#fff;border:1px solid #dfe2e9;border-radius:9px;align-items:center;gap:7px;padding:10px 13px;font-size:11px;display:flex}.assignment-progress{border:1px solid var(--line);background:#fff;border-radius:13px;margin-bottom:18px;padding:16px 19px}.assignment-progress>div:first-child{justify-content:space-between;margin-bottom:9px;font-size:11px;display:flex}.assignment-progress>div:first-child span{color:#4f46e5;font-weight:750}.assignment-progress>div:last-child{background:#eceef2;border-radius:4px;height:5px;overflow:hidden}.assignment-progress i{background:#4f46e5;height:100%;transition:width .3s;display:block}.problem-grid{grid-template-columns:1fr 1fr;gap:15px;display:grid}.problem-card{border:1px solid var(--line);background:#fff;border-radius:15px;flex-direction:column;min-height:290px;padding:20px;transition:all .2s;display:flex}.problem-card.correct{background:#fcfffd;border-color:#91dfbd}.problem-card.wrong{background:#fffdfd;border-color:#f3adad}.problem-head{align-items:center;gap:8px;display:flex}.problem-head>span{color:#4f46e5;letter-spacing:.07em;font-size:10px;font-weight:850}.result-icon{width:20px;margin-left:auto}.correct .result-icon{color:#10b981}.wrong .result-icon{color:#ef4444}.math-problem{flex:1;padding:20px 4px 12px;line-height:1.8}.math-problem p{color:#263142;margin:0;font-size:14px}.math-problem b{letter-spacing:.01em;font-family:Georgia,Times New Roman,serif;font-weight:600}.math-problem span{color:#9aa1ae;margin-top:11px;font-size:9px;display:block}.problem-card>label{color:#818999;margin-bottom:5px;font-size:9px;font-weight:750}.answer-entry{background:#fff;border:1px solid #dfe2e8;border-radius:9px;align-items:center;height:43px;display:flex;overflow:hidden}.answer-entry input{border:0;outline:0;flex:1;min-width:0;height:100%;padding:0 12px;font-weight:750}.answer-entry span{padding:0 12px;font-size:10px;font-weight:750}.correct .answer-entry{border-color:#79d4aa}.correct .answer-entry span{color:#078052}.wrong .answer-entry{border-color:#ef9d9d}.wrong .answer-entry span{color:#dc2626}.submit-dock{color:#fff;z-index:10;background:#20245d;border-radius:14px;justify-content:space-between;align-items:center;min-height:76px;margin:22px auto 0;padding:13px 16px 13px 20px;display:flex;position:sticky;bottom:18px;box-shadow:0 16px 40px #191e524d}.submit-dock>div{align-items:center;gap:11px;display:flex}.submit-dock>div>svg{color:#979bea}.submit-dock span{flex-direction:column;gap:3px;display:flex}.submit-dock strong{font-size:12px}.submit-dock small{color:#afb3d0;font-size:9px}.submit-dock button,.result-summary>button{color:#272b65;background:#fff;border:0;border-radius:10px;align-items:center;gap:8px;padding:13px 16px;font-size:11px;font-weight:750;display:flex}.submit-dock button:disabled{opacity:.4;cursor:not-allowed}.result-summary{background:#fff;border:1px solid #dfe5e2;border-radius:17px;grid-template-columns:90px 1fr auto;align-items:center;gap:20px;margin-bottom:20px;padding:23px 27px;display:grid;box-shadow:0 9px 28px #0f4b3712}.score-ring{background:conic-gradient(#10b981 var(--score),#e8ecea 0);border-radius:50%;place-items:center;width:78px;height:78px;display:grid}.score-ring:before{content:"";background:#fff;border-radius:50%;width:62px;height:62px;position:absolute}.score-ring>div{z-index:1}.score-ring strong{font-size:22px}.score-ring span{color:#879087;font-size:11px}.result-summary h2{margin:7px 0 3px;font-size:19px}.result-summary p{color:#7b8494;margin:0;font-size:11px}.result-summary>button{color:#4f46e5;background:#f0f0ff}.modal-backdrop{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:100;background:#0e122799;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.modal-card{background:#fff;border-radius:20px;flex-direction:column;width:min(960px,100%);max-height:calc(100vh - 48px);display:flex;overflow:hidden;box-shadow:0 32px 90px #0a0e2a47}.modal-header{border-bottom:1px solid #edf0f4;justify-content:space-between;padding:25px 28px 19px;display:flex}.modal-header h2{letter-spacing:-.8px;margin:8px 0 4px;font-size:25px}.modal-header p{color:#7e8797;margin:0;font-size:11px}.modal-header>button{color:#747d8d;background:#fff;border:1px solid #e1e4ea;border-radius:10px;place-items:center;width:37px;height:37px;display:grid}.modal-body{padding:22px 28px;overflow:auto}.form-grid{grid-template-columns:1.4fr 1fr;gap:12px;margin-bottom:15px;display:grid}.form-grid label,.crop-list label{color:#667085;flex-direction:column;gap:6px;font-size:10px;font-weight:750;display:flex}.form-grid input,.crop-list input{border:1px solid #dfe2e8;border-radius:9px;outline:0;height:42px;padding:0 11px}.form-grid input:focus,.crop-list input:focus{border-color:#6961e8;box-shadow:0 0 0 3px #efeeff}.upload-zone{cursor:pointer;background:#f8f8ff;border:1.5px dashed #a8a5e7;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;height:185px;display:flex}.upload-zone input{display:none}.upload-icon{color:#4f46e5;background:#e9e8ff;border-radius:12px;place-items:center;width:44px;height:44px;margin-bottom:10px;display:grid}.upload-zone strong{font-size:13px}.upload-zone small{color:#8991a0;margin-top:5px;font-size:10px}.upload-zone em{color:#5c57b3;background:#ecebff;border-radius:20px;align-items:center;gap:4px;margin-top:12px;padding:5px 8px;font-size:9px;font-style:normal;font-weight:750;display:flex}.file-loaded{background:#fafbfc;border:1px solid #dfe4ea;border-radius:12px;justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.file-loaded>div{align-items:center;gap:11px;display:flex}.file-loaded>div>svg{color:#4f46e5;background:#efefff;border-radius:9px;width:39px;height:39px;padding:9px}.file-loaded span{flex-direction:column;gap:4px;display:flex}.file-loaded strong{font-size:11px}.file-loaded small{color:#8790a0;font-size:9px}.spinner{border:2px solid #ddd;border-top-color:#4f46e5;border-radius:50%;width:19px;height:19px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.crop-heading{justify-content:space-between;align-items:flex-end;margin:22px 0 10px;display:flex}.crop-heading h3,.assign-students h3{margin:0 0 4px;font-size:14px}.crop-heading p,.assign-students p{color:#8a92a1;margin:0;font-size:9px}.crop-heading>span{color:#4f46e5;background:#eeedff;border-radius:7px;padding:5px 8px;font-size:9px;font-weight:800}.crop-list{border:1px solid #e2e5eb;border-radius:12px;flex-direction:column;max-height:290px;display:flex;overflow:hidden auto}.crop-list article{border-bottom:1px solid #eceef2;grid-template-columns:42px 1fr 160px;align-items:center;gap:12px;padding:10px 12px;display:grid}.crop-list article:last-child{border-bottom:0}.crop-number{color:#4f46e5;font-size:11px;font-weight:850}.crop-preview{background:#f0f2f5;border-radius:7px;height:76px;overflow:hidden}.crop-preview img{object-fit:cover;object-position:top;width:100%;height:100%}.crop-preview>div{color:#a0a7b3;place-items:center;height:100%;display:grid}.crop-preview>div span{font-size:9px;display:block}.assign-students{grid-template-columns:1.3fr repeat(3,1fr);align-items:center;gap:8px;margin-top:20px;display:grid}.assign-students>label{cursor:pointer;border:1px solid #e3e6ec;border-radius:10px;align-items:center;gap:7px;height:50px;padding:7px 9px;display:flex}.assign-students>label input{display:none}.assign-students>label>span:nth-of-type(2){flex-direction:column;display:flex}.assign-students label strong{font-size:10px}.assign-students label small{color:#9299a7;font-size:8px}.assign-students label>svg{color:#10b981;width:16px;margin-left:auto}.modal-footer{background:#fafbfc;border-top:1px solid #edf0f4;justify-content:flex-end;gap:9px;padding:15px 28px;display:flex}.secondary-button,.publish-button{border-radius:10px;padding:12px 17px;font-size:11px;font-weight:750}.secondary-button{color:#697386;background:#fff;border:1px solid #dfe2e8}.publish-button{color:#fff;background:#4f46e5;border:0;align-items:center;gap:7px;display:flex}.publish-button:disabled{opacity:.4;cursor:not-allowed;transform:none}@media (width<=1050px){.main-nav{display:none}.header-actions{margin-left:auto}.content-grid{grid-template-columns:1fr}.metric-grid{grid-template-columns:repeat(2,1fr)}.flow-strip{gap:12px;padding:20px}.flow-strip>div{grid-template-columns:34px minmax(0,1fr) 26px;column-gap:9px}.flow-strip>div>span{font-size:18px}.assignment-row{grid-template-columns:42px 1.5fr 1fr auto 40px}.assignment-row .assignment-rate,.login-side{display:none}.student-login-page{grid-template-columns:1fr;place-items:center}.assign-students{grid-template-columns:1fr repeat(3,1fr)}}@media (width<=700px){.topbar{height:66px;padding:0 16px}.brand{min-width:0}.brand>div:last-child span{display:none}.brand-mark{width:32px;height:32px}.profile-button{display:none}.role-switch button{padding:7px 8px}.mobile-menu{background:0 0;border:0;place-items:center;display:grid}.mobile-nav{z-index:39;border-bottom:1px solid var(--line);background:#fff;gap:6px;padding:10px 16px;display:flex;position:fixed;top:66px;left:0;right:0}.mobile-nav button{background:#f4f5f8;border:0;border-radius:7px;flex:1;padding:7px;font-size:9px}.page-wrap{padding:28px 16px 50px}.welcome-row{align-items:flex-start;gap:24px;min-height:0}.welcome-row h1{font-size:31px}.welcome-row p{font-size:12px}.primary-cta{white-space:nowrap;padding:12px;font-size:11px}.metric-grid{grid-template-columns:1fr 1fr;gap:9px}.metric-card{gap:10px;min-height:113px;padding:14px}.metric-icon{width:34px;height:34px}.metric-copy>strong{font-size:22px}.assignment-row{grid-template-columns:38px 1fr auto 20px;gap:8px;padding:10px 12px}.assignment-due,.assignment-rate{display:none!important}.flow-strip{grid-template-columns:1fr 1fr;gap:20px;display:grid}.flow-strip>svg{display:none}.student-login-page{padding:28px 16px}.login-card{padding:28px 22px}.login-card h1{font-size:30px}.problem-grid{grid-template-columns:1fr}.student-hero{align-items:flex-start}.logout-button{padding:10px;font-size:0}.result-summary{grid-template-columns:72px 1fr}.result-summary>button{display:none}.submit-dock{bottom:8px}.submit-dock small{display:none}.submit-dock button{padding:12px;font-size:10px}.modal-backdrop{padding:0}.modal-card{border-radius:0;height:100vh;max-height:none}.modal-header,.modal-body,.modal-footer{padding-left:17px;padding-right:17px}.form-grid{grid-template-columns:1fr}.crop-list article{grid-template-columns:34px 1fr}.crop-list article label{grid-column:2}.assign-students{grid-template-columns:1fr}.assign-students>div{margin-bottom:5px}}@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}.form-grid.three{grid-template-columns:1.2fr .8fr 1fr}.form-grid.four{grid-template-columns:1.25fr .8fr .62fr 1fr}.form-grid select{color:#313543;height:42px;font:inherit;background:#fff;border:1px solid #dfe2e8;border-radius:9px;outline:0;padding:0 11px}.form-grid select:focus{border-color:#e10000;box-shadow:0 0 0 3px #fff0ef}.uploaded-problem{object-fit:contain;object-position:center;background:#fff;width:100%;max-height:260px}.zoomable-problem-image{place-items:center;width:100%;min-width:0;display:grid;position:relative}.zoomable-problem-image>img{cursor:zoom-in}.zoomable-problem-image>button{color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);cursor:pointer;background:#18191fd1;border:1px solid #ffffffbf;border-radius:9px;align-items:center;gap:5px;min-height:32px;padding:0 10px;font-size:9px;font-weight:800;display:flex;position:absolute;bottom:8px;right:8px;box-shadow:0 7px 18px #14141c38}.zoomable-problem-image>button:hover{background:#d80000}.problem-zoom-backdrop{z-index:300;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0b0c11d1;place-items:center;padding:22px;display:grid;position:fixed;inset:0}.problem-zoom-dialog{background:#f3f2ef;border:1px solid #ffffff2e;border-radius:20px;flex-direction:column;width:min(1240px,100%);height:min(900px,100vh - 44px);display:flex;overflow:hidden;box-shadow:0 34px 100px #00000073}.problem-zoom-dialog>header{background:#fff;border-bottom:1px solid #dfddd8;justify-content:space-between;align-items:center;gap:16px;min-height:68px;padding:12px 14px 12px 20px;display:flex}.problem-zoom-dialog>header>div:first-child{flex-direction:column;gap:3px;display:flex}.problem-zoom-dialog>header strong{font-size:13px}.problem-zoom-dialog>header small{color:#7a7673;font-size:9px}.problem-zoom-controls{align-items:center;gap:6px;display:flex}.problem-zoom-controls button{color:#37343a;cursor:pointer;background:#fff;border:1px solid #dedbd6;border-radius:9px;place-items:center;width:38px;height:38px;display:grid}.problem-zoom-controls button:hover:not(:disabled){color:#d00000;background:#fff4f3;border-color:#e60000}.problem-zoom-controls button:disabled{opacity:.35;cursor:not-allowed}.problem-zoom-controls button svg{width:17px}.problem-zoom-controls .zoom-level{color:#d00000;width:65px;font-size:11px;font-weight:850}.problem-zoom-controls .zoom-close{color:#fff;background:#202124;border-color:#202124;margin-left:5px}.problem-zoom-canvas{overscroll-behavior:contain;flex:1;min-height:0;padding:26px;overflow:auto}.problem-zoom-canvas>div{place-items:start center;min-width:100%;min-height:100%;margin:0 auto;transition:width .16s;display:grid}.problem-zoom-canvas img{background:#fff;width:100%;height:auto;display:block;box-shadow:0 15px 45px #14121021}.admin-pin{color:#667085;flex-direction:column;gap:6px;margin-top:14px;font-size:10px;font-weight:750;display:flex}.admin-pin input{border:1px solid #dfe2e8;border-radius:9px;outline:0;height:42px;padding:0 11px}.admin-pin input:focus{border-color:#6961e8;box-shadow:0 0 0 3px #efeeff}.server-error{background:#fff1f1;border:1px solid #ffd0d0;border-radius:9px;margin:12px 0;padding:10px 12px}.student-workspace>.server-error{margin-bottom:16px}.crop-list article{grid-template-columns:42px 1fr 160px 32px}.crop-remove{color:#9ca3af;background:#fff;border:1px solid #e5e7eb;border-radius:8px;place-items:center;width:30px;height:30px;display:grid}.crop-remove:hover{color:#dc2626;background:#fff5f5;border-color:#fecaca}@media (width<=700px){.form-grid.three,.form-grid.four{grid-template-columns:1fr}.crop-list article{grid-template-columns:34px 1fr 32px}.crop-list article label{grid-column:2/3}.crop-remove{grid-area:1/3}.problem-zoom-backdrop{padding:0}.problem-zoom-dialog{border:0;border-radius:0;width:100%;height:100%}.problem-zoom-dialog>header{min-height:64px;padding:10px 10px 10px 14px}.problem-zoom-dialog>header small{display:none}.problem-zoom-controls{gap:4px}.problem-zoom-controls button{width:36px;height:36px}.problem-zoom-controls .zoom-level{width:55px}.problem-zoom-canvas{padding:12px}.zoomable-problem-image>button{bottom:6px;right:6px}}:root{--indigo:#e60000;--indigo-dark:#b90000;--canvas:#f7f6f3;--ink:#18191f;--muted:#6e7280;--line:#e9e6e1}body{background:radial-gradient(circle at 88% 6%,#e6000011,#0000 24%),radial-gradient(circle at 8% 55%,#20245d0b,#0000 30%),#f8f7f4}.topbar{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffeb;border-bottom:1px solid #e2ded7e6;height:80px;box-shadow:0 8px 30px #18191f0a}.header-logo{object-fit:contain;filter:drop-shadow(0 7px 8px #9a000038);width:43px;height:43px}.brand strong{letter-spacing:-.7px;font-size:21px;font-weight:850}.brand span{color:#e60000;letter-spacing:.08em}.main-nav button.active{color:#c90000}.main-nav button.active:after{background:#e60000;box-shadow:0 -3px 10px #e600004d}.main-nav button{cursor:pointer;transition:color .18s,background .18s}.main-nav button:hover{color:#c90000;background:#fff8f7}.role-switch{background:#f2efec;box-shadow:inset 0 1px 3px #27201c14}.role-switch button.selected{color:#d00000;box-shadow:0 4px 12px #231c191a}.profile-button span{background:linear-gradient(145deg,#f41a16,#b80000);box-shadow:0 7px 16px #c200003d}.student-topbar-title{color:#232532;align-items:center;gap:11px;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.student-topbar-title>span{color:#fff;background:linear-gradient(145deg,#343967,#181b43);border-radius:13px;place-items:center;width:39px;height:39px;display:grid;box-shadow:0 9px 20px #1a1d4633,inset 0 1px #fff3}.student-topbar-title>span svg{width:19px}.student-topbar-title>div{flex-direction:column;gap:2px;display:flex}.student-topbar-title small{color:#96919a;letter-spacing:.14em;font-size:7px;font-weight:900}.student-topbar-title strong{letter-spacing:-.25px;font-size:13px}.student-top-profile{background:#fff;border:1px solid #e6e1dc;border-radius:13px;grid-template-columns:36px 1fr;align-items:center;gap:9px;min-width:142px;padding:7px 11px 7px 8px;display:grid;box-shadow:0 8px 20px #2a231f0f}.student-top-profile>span{color:#fff;border-radius:11px;place-items:center;width:36px;height:36px;font-size:12px;font-weight:900;display:grid;box-shadow:0 6px 12px #1e1c2326}.student-top-profile>div{flex-direction:column;gap:2px;min-width:0;display:flex}.student-top-profile strong,.student-top-profile small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.student-top-profile strong{color:#282831;font-size:10px}.student-top-profile small{color:#908a91;font-size:7.5px}.teacher-entry-button{color:#69636a;cursor:pointer;background:#fff;border:1px solid #ded9d4;border-radius:11px;min-height:38px;padding:0 14px;font-size:9px;font-weight:800;transition:all .18s}.teacher-entry-button:hover{color:#2f2d33;background:#faf8f6;border-color:#c9c3bd}.page-wrap{max-width:1440px}.welcome-row{background:linear-gradient(135deg,#fff 0%,#fffdfa 56%,#f8f4f1 100%);border:1px solid #e4e0d9e0;border-radius:28px;align-items:center;min-height:340px;padding:30px 32px;position:relative;overflow:hidden;box-shadow:0 24px 70px #26201d14,inset 0 1px #fff}.welcome-row:before{content:"";border:38px solid #e600000a;border-radius:50%;width:260px;height:260px;position:absolute;top:-150px;right:22%}.hero-copy{z-index:2;max-width:540px;position:relative}.welcome-row h1{letter-spacing:-2.4px;margin:18px 0 13px;font-size:48px;line-height:1.09}.welcome-row h1 em{color:#e00000;text-shadow:0 7px 20px #e600001f}.welcome-row p{color:#77736f}.welcome-row .primary-cta{margin-top:25px}.primary-cta,.publish-button{background:linear-gradient(145deg,#f11712,#c90000);border:1px solid #97000040;transition:all .2s;box-shadow:0 14px 28px #d3000040,inset 0 1px #ffffff59}.primary-cta:hover,.publish-button:hover{background:linear-gradient(145deg,#dc0805,#a90000);box-shadow:0 17px 34px #be00004d,inset 0 1px #ffffff40}.hero-3d{place-items:center;width:51%;height:330px;display:grid;position:absolute;bottom:0;right:10px}.hero-3d>img,.hero-3d>.hero-video{object-fit:contain;z-index:2;filter:drop-shadow(0 24px 18px #2019181f);width:100%;height:100%;position:relative}.hero-3d>.hero-video{object-position:center right;mix-blend-mode:multiply;border-radius:24px;display:block}.hero-3d.dashboard-hero-media{z-index:0;place-items:stretch stretch;width:78%;height:100%;bottom:0;right:-6%}.hero-3d.dashboard-hero-media>.dashboard-hero-image{object-fit:cover;object-position:center 56%;filter:none;mix-blend-mode:multiply;border-radius:0 27px 27px 0;width:100%;height:100%}@media (prefers-reduced-motion:reduce){.hero-3d>.hero-video{display:none}.hero-3d{background:url(/assets/coswork-hero-video-keyframe-v3.webp) 100%/contain no-repeat}}.hero-orb{filter:blur(.2px);z-index:1;border-radius:50%;display:block;position:absolute}.orb-red{opacity:.08;background:radial-gradient(circle at 35% 30%,#ff6f69,#d90000 62%,#8f0000);width:220px;height:220px;top:12%;right:16%;box-shadow:inset -20px -25px 50px #45000059}.orb-navy{opacity:.08;background:linear-gradient(145deg,#515779,#171a35);width:95px;height:95px;bottom:7%;left:17%}.badge-indigo{color:#c60000;background:#fff0ef;border:1px solid #ffd9d6}.metric-grid{gap:18px;margin:22px 0}.metric-card{border-color:#e9e5df;border-radius:18px;transition:transform .2s,box-shadow .2s;box-shadow:0 15px 35px #2a231f0e,inset 0 1px #fff}.metric-card:hover{transform:translateY(-4px);box-shadow:0 22px 44px #2a231f17,inset 0 1px #fff}.metric-icon{border-radius:13px;box-shadow:0 8px 18px #28232217,inset 0 1px #ffffffd9}.metric-icon.indigo{color:#e00000;background:linear-gradient(145deg,#ffefee,#ffd7d4)}.panel{border-color:#e9e5df;border-radius:19px;box-shadow:0 18px 44px #2a231f0f,inset 0 1px #fff}.assignment-symbol{color:#df0000;background:linear-gradient(145deg,#fff0ef,#ffd9d6);box-shadow:0 7px 14px #c2000017}.assignment-row:hover{background:#fffaf9}.flow-strip{background:linear-gradient(135deg,#25283d 0%,#161827 100%);border:1px solid #303349;box-shadow:0 18px 40px #191b2d2e,inset 0 1px #ffffff14}.flow-strip>div>svg{color:#ff6b66;background:linear-gradient(145deg,#3e425d,#282b40);box-shadow:0 7px 15px #0003,inset 0 1px #ffffff1a}.flow-strip>div>span{color:#454960}.management-page{min-height:calc(100vh - 80px)}.management-head{justify-content:space-between;align-items:flex-end;gap:28px;margin-bottom:24px;padding:8px 2px 4px;display:flex}.management-head h1{letter-spacing:-1.5px;margin:7px 0 8px;font-size:36px;line-height:1.12}.management-head p{color:#77736f;margin:0;font-size:13px}.management-head .primary-cta{flex:none}.management-summary{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px;display:grid}.management-summary>span{color:#7d7880;background:#fff;border:1px solid #e9e5df;border-radius:16px;align-items:center;gap:12px;min-height:78px;padding:18px 20px;font-size:11px;font-weight:720;display:flex;box-shadow:0 12px 30px #2a231f0d}.management-summary strong{color:#1c1d24;font-size:27px}.subject-library{background:linear-gradient(145deg,#fff,#fffcfa);border:1px solid #e7e2dc;border-radius:20px;margin-bottom:18px;padding:20px;box-shadow:0 15px 38px #2a231f0e}.subject-library>header{justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:14px;display:flex}.subject-library>header h2{letter-spacing:-.45px;margin:5px 0 0;font-size:18px}.subject-library>header small{color:#8c8580;font-size:9px}.subject-tabs{grid-template-columns:repeat(6,minmax(0,1fr));gap:7px;display:grid}.subject-tabs button{color:#504b48;cursor:pointer;background:#fff;border:1px solid #e4dfda;border-radius:12px;justify-content:space-between;align-items:center;gap:7px;min-width:0;min-height:54px;padding:9px 10px;transition:all .18s;display:flex}.subject-tabs button strong{text-overflow:ellipsis;white-space:nowrap;letter-spacing:-.2px;font-size:10px;overflow:hidden}.subject-tabs button span{color:#7d756f;background:#f0ede9;border-radius:12px;flex:none;place-items:center;min-width:23px;height:23px;padding:0 6px;font-size:8px;font-weight:850;display:grid}.subject-tabs button:hover{background:#fff9f8;border-color:#e9aaa4;transform:translateY(-1px)}.subject-tabs button.active{color:#fff;background:linear-gradient(145deg,#e90000,#c90000);border-color:#e60000;box-shadow:0 9px 20px #c800002e}.subject-tabs button.active span{color:#fff;background:#fff3}.exam-grade-tabs{flex-wrap:wrap;gap:7px;margin-top:12px;display:flex}.exam-grade-tabs button{color:#625d59;cursor:pointer;background:#fff;border:1px solid #e2ddd8;border-radius:999px;align-items:center;gap:7px;padding:8px 11px;font-size:9px;font-weight:800;display:flex}.exam-grade-tabs button em{color:#8a827b;background:#f0ece8;border-radius:999px;place-items:center;min-width:20px;height:20px;padding:0 5px;font-size:8px;font-style:normal;display:grid}.exam-grade-tabs button.active{color:#fff;background:#20245d;border-color:#20245d}.exam-grade-tabs button.active em{color:#fff;background:#ffffff2e}.exam-grade-tabs.compact{flex-wrap:nowrap;margin:-3px 0 14px;padding-bottom:2px;overflow-x:auto}.exam-grade-tabs.compact button{flex:none;padding:7px 10px}.exam-period-label{color:#9b7668;margin-top:5px;font-size:8px;font-weight:750;display:block}.semester-tabs{background:#f1eeea;border-radius:12px;align-items:center;gap:7px;margin-top:12px;padding:9px 10px;display:flex}.semester-tabs>span{color:#494440;margin-right:4px;font-size:9px;font-weight:850}.semester-tabs button{color:#77706b;cursor:pointer;background:0 0;border:0;border-radius:9px;align-items:center;gap:7px;padding:8px 12px;font-size:9px;font-weight:800;display:flex}.semester-tabs button em{color:#716a65;background:#ddd8d3;border-radius:9px;place-items:center;min-width:18px;height:18px;font-size:7px;font-style:normal;display:grid}.semester-tabs button.active{color:#d00000;background:#fff;box-shadow:0 5px 13px #2a231f1a}.semester-tabs button.active em{color:#fff;background:#e60000}.management-panel{overflow:hidden}.management-panel .panel-heading p{color:#938c87;margin:4px 0 0;font-size:9px}.management-panel .assignment-list{min-height:230px}.empty-management{text-align:center;color:#88838a;flex-direction:column;justify-content:center;align-items:center;min-height:260px;display:flex}.empty-management>span{color:#d80000;background:#fff0ef;border-radius:17px;place-items:center;width:56px;height:56px;display:grid}.empty-management strong{color:#343139;margin-top:14px;font-size:14px}.empty-management p{margin:5px 0 0;font-size:10px}.student-management-grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.student-management-card{background:linear-gradient(145deg,#fff,#fffcfa);border:1px solid #e9e5df;border-radius:20px;padding:22px;box-shadow:0 17px 38px #2a231f11,inset 0 1px #fff}.student-contact-line{color:#938d8a!important;margin-top:3px!important;font-size:8px!important}.student-edit-button{color:#4d484e;cursor:pointer;background:#fff;border:1px solid #dfdad5;border-radius:10px;width:100%;min-height:39px;margin-top:15px;font-size:9px;font-weight:850}.student-edit-button:hover{color:#c90000;background:#fff7f6;border-color:#e60000}.danger-outline-button{color:#c90000;cursor:pointer;background:#fff4f3;border:1px solid #efb3ae;border-radius:10px;justify-content:center;align-items:center;gap:6px;min-height:39px;padding:0 13px;font-size:9px;font-weight:850;display:inline-flex}.danger-outline-button:disabled{opacity:.55;cursor:not-allowed}.student-card-top{align-items:center;gap:13px;display:flex}.student-card-badges{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.student-card-top h2{letter-spacing:-.6px;margin:7px 0 2px;font-size:20px}.student-card-top p{color:#89838a;letter-spacing:.04em;margin:0;font-size:10px;font-weight:750}.student-card-stats{grid-template-columns:repeat(3,1fr);gap:7px;margin-top:21px;display:grid}.student-card-stats span{background:#f7f5f2;border-radius:11px;flex-direction:column;gap:5px;padding:11px 8px;display:flex}.student-card-stats small{color:#918b90;font-size:8px}.student-card-stats strong{font-size:15px}.student-rate{background:#eeeae6;border-radius:5px;height:6px;margin-top:16px;overflow:hidden}.student-rate i{border-radius:inherit;background:linear-gradient(90deg,#e60000,#ff625b);height:100%;display:block}.difficulty-rate-grid{grid-template-columns:repeat(3,1fr);gap:7px;margin-top:14px;display:grid}.difficulty-rate{background:#fff;border:1px solid #ebe7e2;border-radius:11px;flex-direction:column;gap:3px;min-width:0;padding:10px 9px;display:flex}.difficulty-rate small{color:#77717a;font-size:8px;font-weight:800}.difficulty-rate strong{color:#25242a;font-size:16px}.difficulty-rate em{color:#9a949a;font-size:7px;font-style:normal}.difficulty-basic{box-shadow:inset 0 3px #38a169}.difficulty-intermediate{box-shadow:inset 0 3px #f59e0b}.difficulty-advanced{box-shadow:inset 0 3px #e60000}.management-note{max-width:720px;margin:20px 0 0}.student-summary{margin-top:-6px}.class-filter{background:#f0ede9;border:1px solid #e8e3de;border-radius:13px;gap:8px;width:max-content;max-width:100%;margin:0 0 16px;padding:5px;display:flex;overflow-x:auto}.class-filter button{color:#777178;cursor:pointer;background:0 0;border:0;border-radius:9px;flex:none;align-items:center;gap:7px;padding:9px 12px;font-size:10px;font-weight:800;display:flex}.class-filter button span{color:#706a70;background:#ded9d4;border-radius:10px;place-items:center;min-width:19px;height:19px;padding:0 5px;font-size:8px;display:grid}.class-filter button.active{color:#d00000;background:#fff;box-shadow:0 7px 18px #2d25211a}.class-filter button.active span{color:#fff;background:#e60000}.student-search-row{justify-content:space-between;align-items:center;gap:14px;margin:0 0 18px;display:flex}.student-search-box{color:#88818a;background:#fff;border:1px solid #ded8d2;border-radius:14px;align-items:center;gap:10px;width:min(480px,100%);height:48px;padding:0 13px 0 16px;transition:border-color .18s,box-shadow .18s;display:flex;box-shadow:0 8px 24px #2a231f0b}.student-search-box:focus-within{border-color:#e8756e;box-shadow:0 0 0 4px #e6000012,0 10px 28px #2a231f0f}.student-search-box input{color:#252129;min-width:0;font:inherit;background:0 0;border:0;outline:0;flex:1;font-size:13px}.student-search-box input::placeholder{color:#aaa3aa}.student-search-box button{color:#777178;cursor:pointer;background:#f2efec;border:0;border-radius:9px;flex:none;place-items:center;width:30px;height:30px;display:grid}.student-search-row>small{color:#898289;flex:none;font-size:11px}.student-search-row>small strong{color:#d00000;font-size:13px}.student-search-empty{color:#999198;background:#faf8f6;border:1px dashed #ddd5cf;border-radius:20px;flex-direction:column;grid-column:1/-1;justify-content:center;align-items:center;gap:8px;min-height:220px;display:flex}.student-search-empty strong{color:#4b454c;font-size:14px}.student-search-empty small{font-size:11px}@media (width<=700px){.student-search-row{flex-direction:column;align-items:stretch;gap:7px}.student-search-box{box-sizing:border-box;width:100%}.student-search-row>small{align-self:flex-end}}.student-register-dialog{background:#fff;border:1px solid #fffc;border-radius:24px;width:min(560px,100%);overflow:hidden;box-shadow:0 35px 100px #0e0f1752,inset 0 1px #fff}.student-register-dialog>header{background:linear-gradient(145deg,#fff,#fff8f7);border-bottom:1px solid #ece8e3;grid-template-columns:50px 1fr 38px;align-items:start;gap:14px;padding:24px 26px 19px;display:grid}.student-register-dialog>header h2{letter-spacing:-.8px;margin:8px 0 4px;font-size:23px}.student-register-dialog>header p{color:#88828a;margin:0;font-size:10px}.student-register-dialog>header>button{color:#77717a;cursor:pointer;background:#fff;border:1px solid #e5e1dc;border-radius:11px;place-items:center;width:38px;height:38px;display:grid}.register-icon{color:#d60000;background:linear-gradient(145deg,#ffebe9,#ffcfc9);border-radius:15px;place-items:center;width:50px;height:50px;display:grid;box-shadow:0 11px 23px #c700001f,inset 0 1px #fff}.student-register-dialog form{gap:14px;padding:22px 26px 0;display:grid}.student-register-dialog form>label{color:#55515a;flex-direction:column;gap:7px;font-size:10px;font-weight:800;display:flex}.student-register-dialog input,.student-register-dialog select{color:#25242a;background:#fff;border:1px solid #dfdad5;border-radius:10px;outline:0;height:46px;padding:0 13px;font-size:12px;font-weight:700}.student-register-dialog input:focus,.student-register-dialog select:focus{border-color:#e10000;box-shadow:0 0 0 4px #fff0ef}.student-register-dialog label small{color:#999298;font-size:8px;font-weight:500}.register-notice{color:#147050;background:#eaf8f1;border-radius:10px;align-items:center;gap:8px;padding:11px 12px;font-size:9px;font-weight:700;display:flex}.student-register-dialog form>footer{background:#faf9f7;border-top:1px solid #ece8e3;justify-content:flex-end;gap:9px;margin:6px -26px 0;padding:15px 26px;display:flex}.management-panel .assignment-row{grid-template-columns:42px minmax(180px,1.5fr) minmax(120px,1fr) auto 46px auto}.assignment-action-button{border-radius:9px;justify-content:center;align-items:center;gap:3px;min-width:92px;min-height:35px;font-size:9px;font-weight:800;display:flex;box-shadow:0 4px 12px #211d1b0d;color:#34313a!important;background:#fff!important;border:1px solid #e2ded9!important;padding:0 9px!important}.assignment-action-button:hover{color:#d00000!important;background:#fff7f6!important;border-color:#efaaa6!important}.assignment-action-button:disabled{cursor:not-allowed;box-shadow:none;color:#9b9691!important;background:#f4f2ef!important;border-color:#e7e3df!important}.assignment-action-button:disabled:hover{transform:none;color:#9b9691!important;background:#f4f2ef!important;border-color:#e7e3df!important}.assignment-assign-dialog{background:#fff;border:1px solid #fffc;border-radius:24px;flex-direction:column;width:min(650px,100%);max-height:90vh;display:flex;overflow:hidden;box-shadow:0 35px 100px #0e0f1752,inset 0 1px #fff}.assignment-assign-dialog>header{background:linear-gradient(145deg,#fff,#fff8f7);border-bottom:1px solid #ece8e3;flex:none;grid-template-columns:50px 1fr 38px;align-items:start;gap:14px;padding:24px 26px 19px;display:grid}.assignment-assign-dialog>header h2{letter-spacing:-.8px;margin:8px 0 4px;font-size:23px}.assignment-assign-dialog>header p{color:#88828a;margin:0;font-size:10px}.assignment-assign-dialog>header>button{color:#77717a;cursor:pointer;background:#fff;border:1px solid #e5e1dc;border-radius:11px;place-items:center;width:38px;height:38px;display:grid}.assignment-assign-dialog form{gap:14px;min-height:0;padding:20px 26px 0;display:grid;overflow:auto}.assignment-due-field{color:#55515a;flex-direction:column;gap:7px;font-size:10px;font-weight:800;display:flex}.assignment-due-field input{color:#25242a;background:#fff;border:1px solid #dfdad5;border-radius:10px;outline:0;height:46px;padding:0 13px;font-size:12px;font-weight:700}.assignment-due-field input:focus{border-color:#e10000;box-shadow:0 0 0 4px #fff0ef}.assignment-student-heading{justify-content:space-between;align-items:flex-end;gap:18px;display:flex}.assignment-student-heading>div{flex-direction:column;gap:3px;display:flex}.assignment-student-heading strong{font-size:11px}.assignment-student-heading small{color:#918b91;font-size:8px}.assignment-student-heading>button{color:#5f5961;background:#fff;border:1px solid #dfdad5;border-radius:8px;padding:7px 10px;font-size:9px;font-weight:800}.assignment-student-list{grid-template-columns:1fr 1fr;gap:10px;max-height:300px;display:grid;overflow:auto}.assignment-student-list>section{background:#faf9f7;border:1px solid #e8e3de;border-radius:13px;padding:11px}.assignment-student-list h3{color:#4d484e;justify-content:space-between;align-items:center;gap:8px;margin:0 0 8px;font-size:10px;display:flex}.assignment-class-title{align-items:baseline;gap:5px;display:flex}.assignment-class-title small{color:#9a9499;font-size:8px;font-weight:600}.assignment-student-list h3 button{color:#655f65;cursor:pointer;background:#fff;border:1px solid #ddd7d1;border-radius:7px;padding:5px 7px;font-size:7px;font-weight:900}.assignment-student-list h3 button:hover{color:#cf0000;border-color:#efaaa6}.assignment-student-list label.already-assigned{background:#f2f7f4;border-color:#cfe5da}.assignment-student-list label.cancel-pending{background:#fff5f3;border-color:#efb3ad}.assignment-student-list label.activity-locked{cursor:not-allowed;opacity:.78}.assignment-check small{color:#087a55;white-space:nowrap;font-size:7px;font-weight:900}.assignment-check .cancel-pending-label{color:#c63128}.selected-student-count small{color:#817b80;font-size:8px}.selected-student-count em{color:#c63128;margin-left:7px;font-size:8px;font-style:normal;font-weight:900}.assignment-student-list label{cursor:pointer;border:1px solid #0000;border-radius:10px;grid-template-columns:29px 1fr 48px;align-items:center;gap:8px;min-height:46px;padding:7px 8px;display:grid}.assignment-student-list label:hover,.assignment-student-list label.selected{background:#fff;border-color:#f0b5b1}.assignment-student-list label input{opacity:0;pointer-events:none;position:absolute}.assignment-student-list label>span:nth-of-type(2){flex-direction:column;gap:2px;display:flex}.assignment-student-list label strong{color:#333037;font-size:10px}.assignment-student-list label small{color:#969096;font-size:8px}.assignment-check{color:#fff;background:#fff;border:1px solid #ddd8d3;border-radius:7px;place-items:center;min-width:22px;height:22px;padding:0 4px;display:grid}.assignment-student-list label.selected .assignment-check{background:#e60000;border-color:#d70000}.assignment-student-list label.already-assigned .assignment-check,.assignment-student-list label.activity-locked .assignment-check{background:#fff;border-color:#bcdccd}.assignment-student-list label.cancel-pending .assignment-check{background:#fff;border-color:#efb3ad}.assign-empty{color:#8d878d;border:1px dashed #ddd7d1;border-radius:13px;flex-direction:column;justify-content:center;align-items:center;gap:9px;min-height:110px;font-size:9px;display:flex}.assignment-assign-dialog form>footer{background:#faf9f7;border-top:1px solid #ece8e3;justify-content:flex-end;align-items:center;gap:9px;margin:6px -26px 0;padding:15px 26px;display:flex;position:sticky;bottom:0}.selected-student-count{color:#817b82;margin-right:auto;font-size:9px}.selected-student-count strong{color:#d00000;margin-right:3px;font-size:15px}.register-field-row{grid-template-columns:1fr 1fr;gap:10px;display:grid}.register-field-row label{color:#55515a;flex-direction:column;gap:7px;font-size:10px;font-weight:800;display:flex}.exam-security-strip{color:#176b50;background:linear-gradient(135deg,#f0fbf6,#fff);border:1px solid #cce9dc;border-radius:14px;align-items:center;gap:13px;margin-bottom:18px;padding:16px 18px;display:flex}.exam-security-strip>svg{background:#dff5ea;border-radius:10px;width:35px;height:35px;padding:8px}.exam-security-strip>div{flex-direction:column;flex:1;gap:3px;display:flex}.exam-security-strip strong{font-size:11px}.exam-security-strip span{color:#71857d;font-size:9px}.exam-management-grid{grid-template-columns:1fr 1fr;gap:16px;display:grid}.exam-admin-card{background:#fff;border:1px solid #e4dfda;border-radius:18px;padding:20px;overflow:hidden;box-shadow:0 10px 28px #221d1a0e}.exam-admin-card>header{grid-template-columns:48px 1fr;align-items:start;gap:12px;display:grid}.exam-school-icon{color:#fff;background:linear-gradient(145deg,#252a68,#15183f);border-radius:14px;place-items:center;width:48px;height:48px;display:grid;box-shadow:0 12px 24px #20245d2e}.exam-admin-card h2{letter-spacing:-.45px;margin:8px 0 4px;font-size:16px}.exam-admin-card header p{color:#8b858b;margin:0;font-size:9px}.exam-admin-metrics{grid-template-columns:repeat(5,1fr);gap:7px;margin:17px 0 12px;display:grid}.exam-admin-metrics span{background:#f6f4f1;border-radius:11px;flex-direction:column;justify-content:space-between;min-height:67px;padding:10px;display:flex}.exam-admin-metrics small{color:#918b91;font-size:8px}.exam-admin-metrics strong{font-size:14px}.school-score-list{gap:7px;display:grid}.school-score-list>span{border:1px solid #e7e2dd;border-radius:10px;grid-template-columns:1fr auto auto auto;align-items:center;gap:10px;padding:10px 11px;display:grid}.school-score-list strong{font-size:10px}.school-score-list em,.school-score-list small{color:#8f898f;font-size:8px;font-style:normal}.school-score-list b{color:#d00000;font-size:10px}.exam-empty-stat{color:#979197;text-align:center;background:#faf9f7;border-radius:10px;padding:16px;font-size:9px}.exam-assignment-button{color:#29275f;text-align:left;cursor:pointer;background:linear-gradient(145deg,#f6f5ff,#fff);border:1px solid #d9d6ee;border-radius:11px;grid-template-columns:32px 1fr 18px;align-items:center;gap:9px;width:100%;margin:0 0 11px;padding:11px 12px;display:grid}.exam-assignment-button>svg:first-child{color:#5149d6;background:#e9e7ff;border-radius:9px;width:32px;height:32px;padding:7px}.exam-assignment-button>svg:last-child{color:#8f8aa4}.exam-assignment-button span{flex-direction:column;gap:3px;display:flex}.exam-assignment-button strong{font-size:10px}.exam-assignment-button small{color:#868197;font-size:8px}.exam-assignment-button:hover{border-color:#9f9ae0;box-shadow:0 8px 18px #312c7814}.exam-upload-needed{color:#cf0000;background:#fff7f6;border:1px solid #edaaa6;border-radius:10px;justify-content:center;align-items:center;gap:6px;width:100%;margin-top:11px;padding:11px;font-size:9px;font-weight:800;display:flex}.exam-form{grid-template-columns:1.6fr 1fr 1fr .7fr}.exam-timer-notice{color:#a94d0a;background:#fff2df;border-radius:11px;align-items:center;gap:10px;margin-bottom:15px;padding:12px 14px;display:flex}.exam-timer-notice>svg{flex:none}.exam-timer-notice span{flex-direction:column;gap:2px;display:flex}.exam-timer-notice strong{font-size:10px}.exam-timer-notice small{color:#a97855;font-size:8px}.exam-time-presets{gap:7px;margin:-4px 0 12px;display:flex}.exam-time-presets button{color:#6f6964;cursor:pointer;background:#fff;border:1px solid #ded9d3;border-radius:999px;padding:7px 12px;font-size:9px;font-weight:800}.exam-time-presets button.active{color:#c92f1a;background:#fff0ed;border-color:#e04a35;box-shadow:0 0 0 2px #fff7f5}.exam-center{background:#fff;border:1px solid #e5e1dc;border-radius:18px;min-height:420px;padding:24px;box-shadow:0 10px 28px #211d1b0d}.exam-center-head{border-bottom:1px solid #ece8e3;justify-content:space-between;align-items:flex-start;gap:22px;padding-bottom:19px;display:flex}.exam-center-head h2{margin:9px 0 5px;font-size:23px}.exam-center-head p{color:#817b82;margin:0;font-size:10px}.exam-safety{color:#0c8058;background:#eaf8f1;border-radius:12px;align-items:center;gap:9px;padding:11px 13px;display:flex}.exam-safety span{flex-direction:column;gap:2px;display:flex}.exam-safety strong{font-size:9px}.exam-safety small{color:#6f9184;font-size:7px}.student-exam-list{gap:11px;margin-top:17px;display:grid}.student-exam-list article{background:#fcfbfa;border:1px solid #e8e3de;border-radius:14px;grid-template-columns:48px 1fr 90px auto;align-items:center;gap:13px;padding:15px;display:grid}.exam-list-school{color:#4f46e5;background:#ededff;border-radius:13px;place-items:center;width:46px;height:46px;display:grid}.student-exam-list h3{margin:7px 0 3px;font-size:14px}.student-exam-list p{color:#8b858b;margin:0;font-size:9px}.exam-list-time{color:#cf0000;flex-direction:column;align-items:center;gap:2px;display:flex}.exam-list-time svg{width:17px}.exam-list-time strong{font-size:15px}.exam-list-time small{color:#918b91;font-size:7px}.student-exam-list article>button{color:#fff;background:#20245d;border:0;border-radius:10px;align-items:center;gap:6px;padding:11px 13px;font-size:9px;font-weight:800;display:flex}.student-exam-list article>button svg{width:15px}.exam-library-only{color:#77706b;text-align:center;background:#f4f1ee;border:1px solid #ded9d4;border-radius:10px;padding:9px 11px;font-size:8px;font-weight:800}.exam-library-toggle{cursor:pointer;background:#faf8f6;border:1px solid #e3ded9;border-radius:12px;align-items:center;gap:10px;margin:12px 0 3px;padding:12px 14px;display:flex}.exam-library-toggle input{accent-color:#d51b13;width:17px;height:17px}.exam-library-toggle span{flex-direction:column;gap:3px;display:flex}.exam-library-toggle strong{font-size:10px}.exam-library-toggle small{color:#8c8580;font-size:8px}.exam-running>header{z-index:12;background:#fff;border:1px solid #d7d3e7;border-radius:15px;justify-content:space-between;align-items:center;margin-bottom:16px;padding:16px 19px;display:flex;position:sticky;top:84px;box-shadow:0 13px 30px #1e1f3e1f}.exam-running>header h2{margin:7px 0 3px;font-size:18px}.exam-running>header p{color:#88828a;margin:0;font-size:9px}.exam-countdown{color:#fff;background:#20245d;border-radius:12px;justify-content:center;align-items:center;gap:9px;min-width:145px;padding:10px 14px;display:flex}.exam-countdown>svg{color:#ffb9b5;width:21px}.exam-countdown span{flex-direction:column;display:flex}.exam-countdown small{color:#b8bad0;font-size:7px}.exam-countdown strong{font-variant-numeric:tabular-nums;letter-spacing:.04em;font-size:22px}.exam-running>header.danger .exam-countdown{background:#d80000;animation:1.2s infinite timerPulse}@keyframes timerPulse{50%{box-shadow:0 0 0 5px #d800001f}}.exam-problem-grid{grid-template-columns:1fr 1fr;gap:15px;display:grid}.exam-problem-grid>article{background:#fff;border:1px solid #e4dfda;border-radius:15px;flex-direction:column;min-height:320px;padding:18px;display:flex}.exam-problem-head{justify-content:space-between;align-items:center;display:flex}.exam-problem-head strong{color:#29264e;font-size:11px}.exam-problem-body{background:#f7f6f3;border-radius:10px;flex:1;place-items:center;min-height:210px;margin:13px 0;display:grid;overflow:hidden}.exam-problem-body img{object-fit:contain;width:100%;max-height:330px}.exam-problem-body p{padding:20px;font-size:12px}.exam-problem-grid label{color:#777178;flex-direction:column;gap:5px;font-size:8px;font-weight:800;display:flex}.exam-problem-grid input{border:1px solid #ddd8d3;border-radius:9px;outline:0;height:43px;padding:0 12px;font-weight:750}.exam-problem-grid input:focus{border-color:#625bea;box-shadow:0 0 0 3px #efeeff}.math-answer-input{width:100%}.math-input-row{background:#fff;border:1px solid #dfe2e8;border-radius:9px;align-items:center;min-height:43px;transition:all .18s;display:flex;overflow:hidden}.math-answer-input.is-open .math-input-row,.math-input-row:focus-within{border-color:#e10000;box-shadow:0 0 0 3px #fff0ef}.math-input-row input,.exam-problem-grid .math-input-row input{min-width:0;height:42px;box-shadow:none;background:0 0;border:0;border-radius:0;outline:0;flex:1;padding:0 11px;font-size:13px;font-weight:750}.math-input-row input:focus,.exam-problem-grid .math-input-row input:focus{box-shadow:none;border:0}.math-keypad-toggle{color:#665f5a;cursor:pointer;background:#f8f6f4;border:0;border-left:1px solid #ece7e2;align-self:stretch;align-items:center;gap:4px;padding:0 10px;font-size:9px;font-weight:850;display:flex}.math-keypad-toggle:hover,.math-answer-input.is-open .math-keypad-toggle{color:#d00000;background:#fff0ef}.math-keypad-toggle:disabled{opacity:.45;cursor:not-allowed}.math-result-text{color:#dc2626;white-space:nowrap;padding:0 10px;font-size:9px;font-weight:800}.correct .math-input-row{border-color:#79d4aa}.correct .math-result-text{color:#078052}.wrong .math-input-row{border-color:#ef9d9d}.math-keypad{background:#fffaf8;border:1px solid #eadfda;border-radius:10px;grid-template-columns:repeat(6,minmax(42px,1fr));gap:5px;margin-top:7px;padding:8px;display:grid;box-shadow:0 8px 20px #54312514}.math-keypad button{color:#34302d;cursor:pointer;background:#fff;border:1px solid #dfd9d4;border-radius:7px;min-height:34px;font-family:Georgia,Times New Roman,serif;font-size:13px;font-weight:700}.math-keypad button:hover{color:#d00000;background:#fff3f1;border-color:#e10000}.math-keypad .math-backspace{color:#756e69;font-family:inherit;font-size:9px}.math-keypad small{color:#8a827d;grid-column:1/-1;padding:3px 2px 0;font-size:8px;line-height:1.45}.exam-duration-control{background:#fffbf8;border:1px solid #ece3dc;border-radius:12px;grid-template-columns:minmax(160px,1fr) auto 78px auto;align-items:center;gap:8px;margin:13px 0;padding:12px;display:grid}.exam-duration-control>div:first-child{color:#bd3b25;align-items:center;gap:8px;display:flex}.exam-duration-control>div:first-child span{flex-direction:column;gap:2px;display:flex}.exam-duration-control>div:first-child strong{font-size:10px}.exam-duration-control>div:first-child small{color:#90857e;font-size:8px}.duration-presets{gap:4px;display:flex}.duration-presets button{color:#817771;cursor:pointer;background:#fff;border:1px solid #e3ddd8;border-radius:7px;padding:6px 7px;font-size:8px;font-weight:800}.duration-presets button.active{color:#c72e19;background:#fff0ed;border-color:#df4630}.exam-duration-control>label{background:#fff;border:1px solid #ded8d3;border-radius:8px;align-items:center;height:34px;display:flex;overflow:hidden}.exam-duration-control>label input{border:0;outline:0;width:48px;height:100%;padding:0 4px 0 9px;font-weight:850}.exam-duration-control>label span{color:#7d756f;padding-right:8px;font-size:9px}.duration-save{color:#fff;cursor:pointer;background:#282760;border:0;border-radius:8px;height:34px;padding:0 10px;font-size:9px;font-weight:800}.duration-save:disabled{opacity:.38;cursor:not-allowed}.exam-duration-control>small{grid-column:1/-1;font-size:8px}.exam-duration-control>small.saved{color:#087a55}.exam-duration-control>small.error{color:#d00000}.exam-class-selector{background:#f6f3ef;border:1px solid #e6e1dc;border-radius:11px;align-items:center;gap:7px;padding:11px;display:flex;overflow-x:auto}.exam-class-selector>span{color:#625c57;flex:none;margin-right:2px;font-size:9px;font-weight:850}.exam-class-selector button{color:#56504c;text-align:left;cursor:pointer;background:#fff;border:1px solid #ded8d2;border-radius:9px;flex-direction:column;flex:none;gap:3px;min-width:78px;padding:8px 10px;display:flex}.exam-class-selector button strong{font-size:9px}.exam-class-selector button small{color:#918a85;font-size:7px}.exam-class-selector button.active{color:#c90000;background:#fff1f0;border-color:#e60000;box-shadow:0 5px 13px #c7000014}.exam-class-selector button.active small{color:#d2645c}.assignment-off-notice{color:#bd241c;background:#fff1f0}.exam-submit-dock{z-index:11;color:#fff;background:#171928;border-radius:14px;justify-content:space-between;align-items:center;margin-top:18px;padding:13px 15px 13px 18px;display:flex;position:sticky;bottom:14px;box-shadow:0 18px 42px #14162647}.exam-submit-dock>div{align-items:center;gap:10px;display:flex}.exam-submit-dock>div>span{flex-direction:column;gap:2px;display:flex}.exam-submit-dock strong{font-size:10px}.exam-submit-dock small{color:#aaadbd;font-size:8px}.exam-submit-dock button{color:#20245d;background:#fff;border:0;border-radius:10px;align-items:center;gap:7px;padding:12px 14px;font-size:9px;font-weight:800;display:flex}.exam-result-card{text-align:center;background:radial-gradient(circle at 50% 0,#fff8dc,#fff 47%);border:1px solid #e5e1dc;border-radius:20px;flex-direction:column;align-items:center;min-height:430px;padding:50px 24px;display:flex;box-shadow:0 15px 38px #2d251f12}.rank-trophy{color:#9b6200;background:linear-gradient(145deg,#ffe99a,#ffc94d);border-radius:22px;place-items:center;width:68px;height:68px;margin-bottom:15px;display:grid;box-shadow:0 17px 30px #cf970033}.rank-trophy svg{width:34px;height:34px}.exam-result-card h2{margin:11px 0 20px;font-size:22px}.exam-result-score{grid-template-columns:repeat(3,1fr);gap:10px;width:min(560px,100%);display:grid}.exam-result-score>span{background:#fff;border:1px solid #e8e3de;border-radius:14px;flex-direction:column;gap:6px;padding:18px 10px;display:flex}.exam-result-score small{color:#908a90;font-size:8px}.exam-result-score strong{color:#d00000;font-size:29px}.exam-result-score em{color:#6f6970;margin-left:2px;font-size:10px;font-style:normal}.exam-result-card>p{color:#8f898f;font-size:9px}.exam-result-actions{gap:8px;margin-top:9px;display:flex}.exam-result-actions button{color:#fff;cursor:pointer;background:#20245d;border:0;border-radius:10px;justify-content:center;align-items:center;gap:6px;padding:11px 19px;font-size:9px;font-weight:800;display:inline-flex}.exam-result-actions .exam-result-wrong-button{background:#d92218}.exam-result-actions svg{width:14px;height:14px}.analytics-panel{overflow:hidden}.analytics-list{padding:0 22px 18px}.analytics-list article{border-top:1px solid #eeeae5;grid-template-columns:170px 1fr 58px 110px;align-items:center;gap:16px;min-height:70px;display:grid}.analytics-list article>div:first-child{flex-direction:column;gap:4px;display:flex}.analytics-list article>div:first-child strong{font-size:13px}.analytics-list article>div:first-child span,.analytics-list article>small{color:#8b858b;font-size:9px}.analytics-list article>b{color:#d60000;text-align:right;font-size:15px}.analytics-list article>small{text-align:right}.analytics-track{background:#eeeae6;border-radius:6px;height:10px;overflow:hidden;box-shadow:inset 0 1px 3px #251f1c14}.analytics-track i{border-radius:inherit;background:linear-gradient(90deg,#20245d,#e60000);height:100%;display:block}.problem-analytics-panel{margin-bottom:20px;overflow:hidden}.problem-analytics-head{align-items:flex-start}.problem-analytics-head p{color:#88828a;margin:6px 0 0;font-size:10px}.assignment-filter{scrollbar-width:thin;gap:9px;padding:0 22px 17px;display:flex;overflow-x:auto}.analytics-subject-filter{scrollbar-width:thin;gap:7px;padding:0 22px 12px;display:flex;overflow-x:auto}.analytics-subject-filter button{color:#696269;cursor:pointer;background:#fff;border:1px solid #e4dfda;border-radius:999px;flex:none;align-items:center;gap:7px;min-height:34px;padding:7px 11px;font-size:9px;font-weight:850;display:flex}.analytics-subject-filter button span{color:#777;background:#f0ede9;border-radius:10px;place-items:center;min-width:19px;height:19px;padding:0 5px;font-size:7px;display:grid}.analytics-subject-filter button.active{color:#fff;background:#e60000;border-color:#e60000}.analytics-subject-filter button.active span{color:#fff;background:#ffffff38}.assignment-filter button{color:#77727a;text-align:left;cursor:pointer;background:#faf9f7;border:1px solid #e8e3de;border-radius:12px;min-width:210px;padding:12px 14px;transition:all .18s}.assignment-filter button strong,.assignment-filter button span{display:block}.assignment-filter button strong{color:#343139;font-size:11px}.assignment-filter button span{margin-top:4px;font-size:8px}.assignment-filter button:hover{background:#fff8f7;border-color:#efaaa6}.assignment-filter button.active{background:#fff1f0;border-color:#e60000;box-shadow:0 8px 20px #cf000017}.assignment-filter button.active strong{color:#c90000}.problem-stat-grid{grid-template-columns:repeat(3,1fr);gap:12px;padding:0 22px 22px;display:grid}.problem-stat-card{text-align:left;cursor:pointer;background:linear-gradient(145deg,#fff,#fffcfa);border:1px solid #e9e5df;border-radius:15px;min-width:0;padding:16px;transition:transform .18s,box-shadow .18s,border-color .18s;box-shadow:0 10px 24px #2a231f0b}.problem-stat-card:hover{border-color:#efaaa6;transform:translateY(-3px);box-shadow:0 16px 32px #811f1917}.problem-stat-top{justify-content:space-between;align-items:center;gap:8px;display:flex}.problem-stat-top>span{color:#5d5860;font-size:10px;font-weight:850}.problem-rate-row{justify-content:space-between;align-items:flex-end;gap:8px;margin:16px 0 10px;display:flex}.problem-rate-row strong{color:#d60000;font-size:28px;line-height:1}.problem-rate-row span{color:#8a848a;text-align:right;font-size:8px}.problem-rate-pair{grid-template-columns:1fr 1fr;gap:8px;margin:15px 0 8px;display:grid}.problem-rate-pair>span{background:#fff0ef;border-radius:10px;flex-direction:column;gap:4px;padding:10px;display:flex}.problem-rate-pair>span:first-child{background:#eaf8f1}.problem-rate-pair small{color:#88828a;font-size:8px}.problem-rate-pair strong{color:#d60000;font-size:21px;line-height:1}.problem-rate-pair .correct-rate{color:#087a55}.problem-rate-track{background:#eeeae6;border-radius:5px;height:7px;overflow:hidden}.problem-rate-track i{border-radius:inherit;background:linear-gradient(90deg,#ff746d,#d60000);height:100%;display:block}.exam-problem-analytics-panel .assignment-filter button.active{background:#effaf5;border-color:#1c9a70;box-shadow:0 8px 20px #087a5517}.exam-problem-analytics-panel .assignment-filter button.active strong{color:#087a55}.exam-correct-rate-track i{background:linear-gradient(90deg,#55c99d,#087a55)}.exam-problem-dialog .problem-dialog-preview{min-height:420px}.view-problem{color:#5f5a63;justify-content:flex-end;align-items:center;gap:5px;margin-top:13px;font-size:9px;font-weight:800;display:flex}.problem-stat-card:hover .view-problem{color:#d00000}.problem-dialog-backdrop{z-index:90;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#11111794;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.problem-dialog{background:#fff;border:1px solid #ffffffbf;border-radius:22px;width:min(900px,100%);max-height:88vh;overflow:auto;box-shadow:0 35px 100px #0e0f1752,inset 0 1px #fff}.problem-dialog>header{border-bottom:1px solid #ece8e3;justify-content:space-between;align-items:flex-start;gap:20px;padding:23px 26px 18px;display:flex}.problem-dialog>header h2{letter-spacing:-.7px;margin:9px 0 3px;font-size:22px}.problem-dialog>header p{color:#8b858c;margin:0;font-size:10px}.problem-dialog>header>button{color:#77717a;cursor:pointer;background:#fff;border:1px solid #e5e1dc;border-radius:11px;flex:none;place-items:center;width:38px;height:38px;display:grid}.problem-dialog-body{grid-template-columns:minmax(0,1fr) 190px;gap:17px;padding:22px 26px;display:grid}.problem-dialog-preview{background:#f8f6f3;border:1px solid #ebe7e2;border-radius:15px;place-items:center;min-height:330px;padding:18px;display:grid;overflow:auto}.problem-dialog-preview img{object-fit:contain;width:100%;max-height:520px}.problem-dialog-preview p{color:#343139;margin:0;font-size:14px;line-height:1.85}.problem-dialog-body aside{grid-template-columns:1fr 1fr;align-content:start;gap:9px;display:grid}.problem-dialog-body aside>span{background:#f6f4f1;border-radius:13px;flex-direction:column;justify-content:space-between;min-height:90px;padding:14px;display:flex}.problem-dialog-body aside small{color:#8b858b;font-size:8px}.problem-dialog-body aside strong{font-size:19px}.problem-dialog-body aside .correct-answer{background:#eaf8f1;grid-column:1/-1}.problem-dialog-body aside .correct-answer strong{color:#087a55;font-size:22px}.problem-dialog-body aside .correct-rate-box{background:#eaf8f1}.problem-dialog-body aside .correct-rate-box strong{color:#087a55}.problem-dialog>footer{background:#faf9f7;border-top:1px solid #ece8e3;justify-content:space-between;align-items:center;gap:20px;padding:15px 26px;display:flex}.problem-dialog>footer p{color:#8b858b;margin:0;font-size:9px}.problem-dialog>footer button{color:#fff;cursor:pointer;background:#20245d;border:0;border-radius:10px;padding:10px 22px;font-size:10px;font-weight:800}.solution-link-editor{background:#fcfbf9;border:1px solid #e7e2dc;border-radius:15px;grid-template-columns:1fr 1fr;gap:11px;margin:0 26px 22px;padding:17px;display:grid}.solution-link-heading{border-bottom:1px solid #ebe7e2;grid-column:1/-1;align-items:center;gap:10px;padding-bottom:11px;display:flex}.solution-link-heading>span{color:#d50000;background:#fff0ef;border-radius:11px;place-items:center;width:38px;height:38px;display:grid}.solution-link-heading>span svg{width:19px}.solution-link-heading>div{flex-direction:column;flex:1;gap:3px;display:flex}.solution-link-heading strong{font-size:12px}.solution-link-heading small{color:#8a8482;font-size:8px}.solution-link-editor label{color:#686268;flex-direction:column;gap:6px;font-size:9px;font-weight:800;display:flex}.solution-link-editor label:nth-of-type(3){grid-column:1/-1}.solution-link-editor input{color:#29272b;background:#fff;border:1px solid #ddd8d2;border-radius:9px;outline:0;width:100%;height:42px;padding:0 11px;font-size:10px}.solution-link-editor input:focus{border-color:#e10000;box-shadow:0 0 0 3px #fff0ef}.solution-link-actions{grid-column:1/-1;justify-content:space-between;align-items:center;gap:12px;display:flex}.solution-link-actions small{color:#8f8985;font-size:8px}.solution-link-actions button{color:#fff;cursor:pointer;background:#20245d;border:0;border-radius:9px;align-items:center;gap:6px;min-height:39px;padding:0 14px;font-size:9px;font-weight:850;display:flex}.solution-link-actions button svg{width:15px}.solution-link-actions button:disabled{opacity:.55}.difficulty-table{padding:0 22px 22px}.difficulty-table-head,.difficulty-table article{grid-template-columns:1.1fr repeat(3,1fr);align-items:center;gap:8px;display:grid}.difficulty-table-head{color:#7b757b;background:#f3f0ec;border-radius:10px;padding:10px 14px;font-size:9px;font-weight:800}.difficulty-table article{border-bottom:1px solid #eeeae5;min-height:68px;padding:10px 14px}.difficulty-table article>strong{font-size:13px}.difficulty-table article>span{flex-direction:column;gap:3px;display:flex}.difficulty-table article b{color:#24242b;font-size:15px}.difficulty-table article small{color:#979197;font-size:8px}.student-login-page,.teacher-login-page{min-height:calc(100vh - 80px);position:relative}.student-login-page:before,.teacher-login-page:before{content:"";opacity:.9;background:radial-gradient(circle,#fff 0 31%,#f0ebe8 32% 33%,#0000 34%),conic-gradient(from 40deg,#e6000014,#20245d0d,#e6000014);border-radius:50%;width:390px;height:390px;position:absolute;top:11%;right:8%}.login-card{z-index:3;border:1px solid #e6e1dae6;border-radius:26px;position:relative;box-shadow:0 28px 80px #2f27231c,inset 0 1px #fff}.student-login-modes{background:#f2f0ed;border-radius:12px;grid-template-columns:1fr 1fr;gap:4px;margin:0 0 18px;padding:4px;display:grid}.student-login-modes button{color:#77716e;cursor:pointer;background:0 0;border:0;border-radius:9px;min-height:38px;font-size:9px;font-weight:850}.student-login-modes button.active{color:#d00000;background:#fff;box-shadow:0 3px 12px #2d26221a}.password-setup-card .identity-fields{grid-template-columns:1fr}.password-setup-card .code-input input,.password-setup-card .identity-input input{letter-spacing:normal}.student-register-dialog{max-height:calc(100dvh - 48px);overflow:auto}.login-card:after{content:"";background:linear-gradient(#ff322d,#c90000);border-radius:6px;width:8px;height:85px;position:absolute;top:80px;right:-4px;box-shadow:0 7px 17px #d000003b}.login-logo{object-fit:contain;object-position:left center;width:210px;height:50px;margin-bottom:24px}.login-icon{color:#e00000;background:linear-gradient(145deg,#fff0ef,#ffd8d5);box-shadow:0 12px 24px #c700001f,inset 0 1px #fff}.login-icon.admin{color:#fff;background:linear-gradient(145deg,#25283d,#111322);box-shadow:0 12px 24px #16182833,inset 0 1px #ffffff26}.identity-fields{grid-template-columns:.9fr 1.15fr;gap:11px;display:grid}.identity-fields>label{color:#4b5565;font-size:11px;font-weight:750;display:block}.identity-input{background:#fff;border:1px solid #d7dbe4;border-radius:12px;align-items:center;gap:10px;height:54px;margin-top:7px;padding:0 15px;display:flex}.identity-input svg{color:#8a92a1;flex:none}.identity-input input{border:0;outline:0;width:100%;min-width:0;height:100%;font-weight:750}.identity-input:focus-within{border-color:#e00000;box-shadow:0 0 0 4px #fff0ef}.identity-input.has-error{border-color:#ef4444}.code-input:focus-within{border-color:#e00000;box-shadow:0 0 0 4px #fff0ef}.code-input button{background:linear-gradient(145deg,#f21d18,#c80000);box-shadow:inset 0 1px #ffffff47}.privacy-note{color:#7c7773;background:#f7f5f2;border-radius:10px;align-items:center;gap:7px;margin-top:22px;padding:11px 12px;font-size:10px;display:flex}.privacy-note svg{color:#d50000}.student-visual{overflow:visible}.student-3d-image{object-fit:contain;z-index:2;filter:drop-shadow(0 35px 25px #201d2529);width:min(560px,95%);height:520px;animation:6s ease-in-out infinite float3d;position:relative}@keyframes float3d{0%,to{transform:translateY(0)rotate(-1deg)}50%{transform:translateY(-12px)rotate(1deg)}}.visual-disc{z-index:1;border-radius:50%;display:block;position:absolute}.disc-red{opacity:.08;background:linear-gradient(145deg,#ff615b,#d00000);width:230px;height:230px;top:10%;right:9%}.disc-navy{opacity:.07;background:#20245d;width:120px;height:120px;bottom:8%;left:15%}.floating-chip{z-index:4;border-radius:14px;box-shadow:0 16px 35px #231e2221,inset 0 1px #fff}.teacher-login-page{grid-template-columns:1fr 1fr;align-items:center;max-width:1200px;margin:0 auto;padding:60px 30px;display:grid}.teacher-login-visual{z-index:2;flex-direction:column;justify-content:flex-end;align-items:center;height:600px;display:flex;position:relative}.teacher-login-visual>img{object-fit:contain;filter:drop-shadow(0 24px 24px #1f1c231f);width:100%;height:310px;position:absolute;top:-30px}.teacher-team-card{box-sizing:border-box;-webkit-backdrop-filter:blur(16px);text-align:left;background:#fffdf2eb;border:1px solid #d8cfbfdb;border-radius:22px;width:min(100%,540px);padding:20px 22px 21px;box-shadow:0 22px 55px #2b251f1a}.teacher-team-card header{align-items:baseline;gap:10px;margin-bottom:11px;display:flex}.teacher-team-card header small{color:#c5161d;letter-spacing:.16em;margin:0;font-size:7px;font-weight:900}.teacher-team-card h2{color:#242328;letter-spacing:-.04em;margin:0;font-size:19px}.teacher-team-roster{color:#686158;word-break:keep-all;border-bottom:1px solid #c2b6a28c;margin:0 0 14px;padding-bottom:13px;font-size:9px;line-height:1.7}.teacher-team-card ol{counter-reset:team;flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.teacher-team-card li{counter-increment:team;grid-template-columns:20px minmax(0,1fr);align-items:start;column-gap:8px;display:grid}.teacher-team-card li:before{content:counter(team);color:#c5161d;background:#fff;border-radius:6px;place-items:center;width:18px;height:18px;font-size:8px;font-weight:900;display:grid;box-shadow:inset 0 0 0 1px #c5161d26}.teacher-team-card li strong,.teacher-team-card li span{text-align:left;grid-column:2}.teacher-team-card li strong{color:#302e31;letter-spacing:-.01em;font-size:9px;line-height:1.4}.teacher-team-card li span{color:#777068;margin-top:2px;font-size:8px;line-height:1.45}.problem-card{border-color:#e9e5df;border-radius:18px;box-shadow:0 15px 35px #2b25210d,inset 0 1px #fff}.problem-card:focus-within{border-color:#ee7a75;box-shadow:0 18px 40px #b5000017,0 0 0 4px #fff1f0}.problem-head>span{color:#d90000}.answer-entry:focus-within{border-color:#e10000;box-shadow:0 0 0 3px #fff0ef}.workspace-tabs{background:#efede9;border:1px solid #e7e3dd;border-radius:13px;gap:8px;width:max-content;margin:0 0 18px;padding:5px;display:flex;box-shadow:inset 0 2px 5px #30282312}.workspace-tabs button{color:#77747a;background:0 0;border:0;border-radius:9px;align-items:center;gap:7px;padding:10px 14px;font-size:11px;font-weight:750;display:flex}.workspace-tabs button.active{color:#d50000;background:#fff;box-shadow:0 6px 16px #28221e1a,inset 0 1px #fff}.workspace-tabs button>span{color:#fff;background:#e00000;border-radius:9px;place-items:center;min-width:18px;height:18px;padding:0 5px;font-size:8px;display:grid}.student-learning-home{gap:18px;display:grid}.learning-home-intro{background:linear-gradient(135deg,#fff 0%,#fff7f5 62%,#f0f1ff 100%);border:1px solid #e3dfda;border-radius:22px;justify-content:space-between;align-items:center;min-height:150px;padding:28px 30px;display:flex;position:relative;overflow:hidden;box-shadow:0 18px 44px #2d221f14}.learning-home-intro:after{content:"";opacity:.08;background:#e60000;border-radius:44px;width:150px;height:150px;position:absolute;top:-82px;right:180px;transform:rotate(26deg)}.learning-home-intro h2{letter-spacing:-.7px;margin:10px 0 6px;font-size:25px}.learning-home-intro p{color:#7d7780;margin:0;font-size:11px}.learning-home-intro>button{z-index:1;color:#2b2c55;text-align:left;cursor:pointer;background:#fff;border:1px solid #ded9d4;border-radius:15px;grid-template-columns:42px 1fr 18px;align-items:center;gap:10px;min-width:190px;padding:14px 15px;display:grid;position:relative;box-shadow:0 12px 26px #2f26221a}.learning-home-intro>button>svg:first-child{color:#d80000;background:#fff0ee;border-radius:12px;width:42px;height:42px;padding:10px}.learning-home-intro>button>span{flex-direction:column;gap:3px;display:flex}.learning-home-intro>button small{color:#8e888e;font-size:8px}.learning-home-intro>button strong{font-size:15px}.learning-home-intro>button>svg:last-child{color:#9e989c;width:16px}.learning-choice-grid{grid-template-columns:1fr 1fr;align-items:start;gap:16px;display:grid}.learning-library{background:#fff;border:1px solid #e4e0db;border-radius:20px;padding:19px;box-shadow:0 16px 40px #2b231f12}.learning-library>header{grid-template-columns:45px 1fr 32px;align-items:center;gap:11px;margin-bottom:15px;display:grid}.learning-library>header>span{color:#fff;background:linear-gradient(145deg,#ff3a2f,#c90000);border-radius:14px;place-items:center;width:45px;height:45px;display:grid;box-shadow:0 10px 18px #dc000038}.exam-library>header>span{background:linear-gradient(145deg,#40458b,#171a4d);box-shadow:0 10px 18px #1e225b38}.learning-library>header svg{width:21px}.learning-library>header small{color:#a29ca0;letter-spacing:.12em;font-size:7px;font-weight:850}.learning-library>header h3{margin:3px 0 0;font-size:17px}.learning-library>header>b{color:#5c575c;background:#f2efec;border-radius:10px;place-items:center;width:31px;height:31px;font-size:12px;display:grid}.learning-card-list{gap:11px;display:grid}.learning-card-list article{background:#fcfbfa;border:1px solid #e8e4df;border-radius:15px;padding:16px;transition:transform .18s,box-shadow .18s,border-color .18s;position:relative}.learning-card-list article:hover{border-color:#d8d1ca;transform:translateY(-2px);box-shadow:0 13px 24px #2f262214}.learning-item-status{justify-content:space-between;align-items:center;gap:8px;display:flex}.learning-item-status>small{color:#89838a;text-overflow:ellipsis;white-space:nowrap;font-size:8px;overflow:hidden}.learning-card-list h4{margin:11px 0 9px;font-size:14px;line-height:1.45}.learning-item-meta{color:#77717a;flex-wrap:wrap;gap:12px;font-size:8.5px;display:flex}.learning-item-meta span{align-items:center;gap:4px;display:flex}.learning-item-meta svg{color:#a49da2;width:13px;height:13px}.learning-card-list article>p{color:#989197;margin:10px 0 12px;font-size:8.5px}.learning-card-list article>p strong{color:#d00000;font-size:11px}.learning-card-list article>button{color:#fff;cursor:pointer;background:#20245d;border:0;border-radius:10px;justify-content:center;align-items:center;gap:7px;width:100%;padding:11px;font-size:9px;font-weight:800;display:flex}.assignment-library .learning-card-list article>button{background:#d81c13}.learning-card-list article>button:disabled{opacity:.55;cursor:wait}.learning-card-list article>button svg{width:14px}.learning-library-empty{color:#999298;text-align:center;border:1px dashed #ded9d4;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:7px;min-height:190px;display:flex}.learning-library-empty>svg{color:#c8c1c2;width:26px}.learning-library-empty strong{color:#5b565b;font-size:11px}.learning-library-empty small{font-size:8px}.student-exam-list article.is-selected{background:#f7f7ff;border-color:#8d90c5;box-shadow:0 0 0 3px #20245d14}.no-assignment{text-align:center;background:#fff;border:1px solid #e9e5df;border-radius:20px;flex-direction:column;justify-content:center;align-items:center;min-height:330px;display:flex;box-shadow:0 18px 44px #2a231f0f}.no-assignment>span{color:#d60000;background:#fff0ef;border-radius:18px;place-items:center;width:60px;height:60px;display:grid}.no-assignment h2{margin:16px 0 6px;font-size:18px}.no-assignment p{color:#8b858b;margin:0;font-size:10px}.wrong-tab-active>.assignment-progress,.wrong-tab-active>.result-summary,.wrong-tab-active>.problem-grid,.wrong-tab-active>.submit-dock{display:none}.wrong-notebook{background:#fff;border:1px solid #e9e5df;border-radius:20px;padding:25px;box-shadow:0 20px 48px #2b252111,inset 0 1px #fff}.wrong-notebook-head{border-bottom:1px solid #ece8e3;justify-content:space-between;align-items:flex-end;padding-bottom:19px;display:flex}.wrong-notebook-head h2{letter-spacing:-.8px;margin:8px 0 4px;font-size:24px}.wrong-notebook-head p{color:#858087;margin:0;font-size:11px}.hidden-toggle{cursor:pointer;color:#757179;align-items:center;gap:8px;font-size:10px;font-weight:700;display:flex}.hidden-toggle input{display:none}.hidden-toggle>span{background:#d8d5d1;border-radius:12px;width:34px;height:20px;transition:all .2s;position:relative}.hidden-toggle>span:after{content:"";background:#fff;border-radius:50%;width:14px;height:14px;transition:all .2s;position:absolute;top:3px;left:3px;box-shadow:0 2px 5px #0003}.hidden-toggle input:checked+span{background:#20245d}.hidden-toggle input:checked+span:after{transform:translate(14px)}.wrong-note-grid{grid-template-columns:1fr 1fr;gap:14px;margin-top:19px;display:grid}.wrong-note-card{background:linear-gradient(145deg,#fff,#fffcfa);border:1px solid #ece7e1;border-radius:16px;padding:16px;position:relative;box-shadow:0 12px 28px #2b24210d,inset 0 1px #fff}.wrong-note-card:before{content:"";background:linear-gradient(#ff4b44,#d50000);border-radius:0 5px 5px 0;width:4px;position:absolute;top:18px;bottom:18px;left:-1px;box-shadow:2px 0 9px #d5000029}.wrong-note-card.is-hidden{opacity:.57;filter:grayscale(.35)}.wrong-note-meta{justify-content:space-between;align-items:center;gap:9px;display:flex}.wrong-note-meta>span{color:#77717b;white-space:nowrap;text-overflow:ellipsis;font-size:10px;overflow:hidden}.wrong-note-problem{background:#f8f6f3;border-radius:10px;place-items:center;min-height:106px;margin:13px 0;padding:12px;display:grid;overflow:hidden}.wrong-note-problem img{object-fit:contain;width:100%;max-height:190px}.wrong-note-problem p{color:#343139;margin:0;font-size:12px;line-height:1.75}.wrong-answer-compare{grid-template-columns:1fr 20px 1fr;align-items:center;gap:7px;display:grid}.wrong-answer-compare>span{background:#fff0ef;border-radius:9px;flex-direction:column;gap:3px;padding:9px 10px;display:flex}.wrong-answer-compare>span.correct{background:#eaf8f1}.wrong-answer-compare small{color:#938b8b;font-size:8px}.wrong-answer-compare strong{color:#d00000;font-size:12px}.wrong-answer-compare .correct strong{color:#087a55}.wrong-answer-compare>svg{color:#aaa4a0}.wrong-answer-compare>span.learning{background:#fff7e8}.wrong-answer-compare>span.learning strong{color:#c26300}.wrong-note-actions{align-items:center;gap:7px;margin-top:12px;display:flex}.recovery-start-button{color:#fff;cursor:pointer;background:#20245d;border:0;border-radius:9px;flex:1;justify-content:center;align-items:center;gap:6px;min-width:0;min-height:38px;font-size:9px;font-weight:850;display:flex;box-shadow:0 8px 18px #20245d24}.recovery-start-button:hover{background:#d80000}.recovery-detail-button{background:#d81c13;box-shadow:0 8px 18px #d81c1324}.hide-wrong-button{color:#777178;background:#fff;border:1px solid #e3dfda;border-radius:8px;flex:none;align-items:center;gap:5px;margin-left:auto;padding:7px 10px;font-size:9px;font-weight:700;display:flex}.hide-wrong-button:hover{color:#d00000;background:#fff8f7;border-color:#f2b6b2}.recovery-similar-button{background:#087a55;box-shadow:0 8px 18px #087a5526}.recovery-start-button:disabled{cursor:not-allowed;opacity:.5;box-shadow:none}.recovery-start-button:disabled:hover{background:#20245d}.recovery-dialog-backdrop{z-index:220;overscroll-behavior:none;background:#f6f4f1;place-items:center;width:100vw;height:100dvh;padding:0;display:grid;position:fixed;inset:0;overflow:hidden}.recovery-dialog{width:100%;height:100%;max-height:100dvh;box-shadow:none;background:#f6f4f1;border:0;border-radius:0;flex-direction:column;display:flex;overflow:hidden}.recovery-dialog>header{z-index:4;min-height:68px;padding:max(10px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) 10px max(21px,env(safe-area-inset-left));background:#fff;border-bottom:1px solid #e5e0da;flex:none;justify-content:space-between;align-items:center;gap:18px;display:flex;position:relative}.recovery-dialog>header>div:first-child{min-width:0}.recovery-dialog>header h2{letter-spacing:-.55px;margin:4px 0 1px;font-size:17px}.recovery-dialog>header p{color:#8c8581;margin:0;font-size:8px}.recovery-header-actions{align-items:center;gap:7px;display:flex}.recovery-header-actions button{color:#625d5b;cursor:pointer;background:#fff;border:1px solid #e2ddd7;border-radius:11px;justify-content:center;align-items:center;gap:6px;min-height:40px;padding:0 12px;font-size:9px;font-weight:850;display:flex}.recovery-header-actions button:hover,.recovery-header-actions button.active{color:#c90000;background:#fff3f2;border-color:#f0aaa6}.recovery-header-actions button svg{width:16px}.recovery-header-actions .recovery-back-button{color:#fff;background:#202124;border-color:#202124;flex:none;padding:0 14px}.recovery-header-actions .recovery-back-button:hover{color:#fff;background:#d00000;border-color:#d00000}.recovery-layout{flex:1;grid-template-columns:1fr;gap:0;min-height:0;padding:0;display:grid}.recovery-dialog.show-problem .recovery-layout{grid-template-columns:minmax(340px,.58fr) minmax(0,1.42fr);gap:12px;padding:12px}.recovery-problem-pane,.recovery-learning-pane{background:#fff;min-height:0;overflow:hidden}.recovery-problem-pane{border:1px solid #e4dfd8;border-radius:16px;flex-direction:column;padding:16px;display:flex}.recovery-dialog.show-problem .recovery-learning-pane{border:1px solid #e4dfd8;border-radius:16px}.recovery-pane-label{flex-direction:column;gap:3px;margin-bottom:11px;display:flex}.recovery-pane-label span{color:#d00000;letter-spacing:.12em;font-size:8px;font-weight:900}.recovery-pane-label small{color:#817b78;font-size:9px}.recovery-problem-preview{background:#f7f5f2;border-radius:12px;flex:1;place-items:center;min-height:230px;padding:13px;display:grid;overflow:auto}.recovery-problem-preview img{object-fit:contain;width:100%;max-height:500px}.recovery-problem-preview p{font-size:15px;line-height:1.85}.recovery-original-answer{grid-template-columns:1fr 1fr;gap:8px;margin-top:11px;display:grid}.recovery-original-answer span{background:#fff0ef;border-radius:10px;justify-content:space-between;align-items:center;padding:10px 12px;display:flex}.recovery-original-answer span:last-child{background:#f0effd}.recovery-original-answer small{color:#8d7774;font-size:8px}.recovery-original-answer strong{color:#c90000;font-size:12px}.recovery-original-answer span:last-child strong{color:#4e478f}.recovery-learning-pane{flex-direction:column;display:flex}.recovery-tabs{background:#fbfaf8;border-bottom:1px solid #ebe6e0;grid-template-columns:repeat(4,1fr);gap:6px;height:57px;padding:8px;display:grid}.recovery-tabs button{color:#78716e;cursor:pointer;background:0 0;border:0;border-radius:10px;justify-content:center;align-items:center;gap:6px;font-size:9px;font-weight:850;display:flex;position:relative}.recovery-tabs button svg{width:16px}.recovery-tabs button i{background:#10b981;border-radius:50%;width:6px;height:6px;position:absolute;top:8px;right:8px}.recovery-tabs button.active{color:#d00000;background:#fff;box-shadow:0 5px 15px #261f1b17}.recovery-tabs button:disabled{opacity:.34;cursor:not-allowed}.recovery-flow-bar{background:#fff;border-bottom:1px solid #ebe6e0;justify-content:space-between;align-items:center;gap:12px;min-height:48px;padding:7px 10px 7px 15px;display:flex}.recovery-flow-bar>span{color:#797377;align-items:center;gap:6px;font-size:8.5px;font-weight:750;display:flex}.recovery-flow-bar>span svg{color:#0b9865;width:15px}.recovery-flow-bar>div{align-items:center;gap:6px;display:flex}.recovery-flow-bar button{color:#6f696d;cursor:pointer;background:#fff;border:1px solid #e1dcd6;border-radius:9px;min-height:33px;padding:0 11px;font-size:8.5px;font-weight:850}.recovery-flow-bar .recovery-next-button{color:#fff;background:#20245d;border-color:#20245d;align-items:center;gap:4px;display:flex;box-shadow:0 6px 14px #20245d29}.recovery-flow-bar .recovery-next-button:hover{background:#d00000;border-color:#d00000}.recovery-flow-bar .recovery-next-button svg{width:14px}.recovery-content{background:#f7f5f2;flex:1;min-height:0;position:relative;overflow:hidden}.recovery-content iframe,.recovery-content video{background:#fff;border:0;width:100%;height:100%;display:block}.recovery-content>a{color:#fff;background:#1f2026e0;border-radius:10px;align-items:center;gap:6px;padding:10px 12px;font-size:8px;font-weight:800;text-decoration:none;display:flex;position:absolute;bottom:16px;right:16px;box-shadow:0 9px 20px #00000038}.recovery-content>a:hover{background:#d00000}.recovery-content>a svg{width:14px}.recovery-dialog.steps-fullscreen>header,.recovery-dialog.steps-fullscreen .recovery-tabs,.recovery-dialog.steps-fullscreen .recovery-flow-bar,.recovery-dialog.steps-fullscreen .recovery-problem-pane,.recovery-dialog.steps-fullscreen .recovery-retry-dock{display:none}.recovery-dialog.steps-fullscreen .recovery-layout{grid-template-columns:1fr!important;gap:0!important;overflow:hidden!important}.recovery-dialog.steps-fullscreen .recovery-layout,.recovery-dialog.steps-fullscreen .recovery-learning-pane,.recovery-dialog.steps-fullscreen .recovery-content{border:0;border-radius:0;width:100%;height:100%;min-height:100dvh;padding:0}.recovery-dialog.steps-fullscreen .recovery-content>a{display:none}.recovery-steps-back-button{z-index:8;top:max(12px,env(safe-area-inset-top));left:max(12px,env(safe-area-inset-left));color:#fff;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);cursor:pointer;background:#1c1d22e6;border:1px solid #ffffffad;border-radius:13px;align-items:center;gap:9px;min-height:48px;padding:7px 13px 7px 10px;display:flex;position:absolute;box-shadow:0 10px 28px #00000040}.recovery-steps-back-button:hover{background:#c90000}.recovery-steps-back-button>svg{width:19px}.recovery-steps-back-button>span{flex-direction:column;align-items:flex-start;gap:1px;display:flex}.recovery-steps-back-button strong{font-size:10px}.recovery-steps-back-button small{color:#ffffffb8;font-size:7px}.solution-ai-launch{z-index:8;top:max(12px,env(safe-area-inset-top));right:max(12px,env(safe-area-inset-right));color:#fff;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);cursor:pointer;background:linear-gradient(135deg,#20245df0,#433885f0);border:1px solid #ffffffb8;border-radius:13px;align-items:center;gap:7px;min-height:46px;padding:0 15px;font-size:9px;font-weight:900;display:flex;position:absolute;box-shadow:0 10px 28px #14153747}.solution-ai-launch:hover{background:#d00000}.solution-ai-launch svg{width:18px}.solution-ai-panel{z-index:12;visibility:hidden;background:#fff;border-left:1px solid #ddd8d2;flex-direction:column;width:min(390px,100%);height:100%;transition:transform .24s,visibility .24s;display:flex;position:absolute;top:0;right:0;overflow:hidden;transform:translate(102%);box-shadow:-18px 0 50px #1c191830}.solution-ai-panel.open{visibility:visible;transform:translate(0)}.solution-ai-panel>header{min-height:68px;padding:max(12px,env(safe-area-inset-top)) 14px 12px;background:linear-gradient(145deg,#fff,#f5f3ff);border-bottom:1px solid #e9e4de;justify-content:space-between;align-items:center;gap:12px;display:flex}.solution-ai-panel>header>span{grid-template-columns:34px 1fr;column-gap:9px;display:grid}.solution-ai-panel>header>span>svg{color:#353980;background:#e9e8fb;border-radius:10px;grid-row:1/3;width:34px;height:34px;padding:8px}.solution-ai-panel>header strong{font-size:12px}.solution-ai-panel>header small{color:#7d7882;font-size:7.5px}.solution-ai-panel>header>button{color:#716b70;cursor:pointer;background:#fff;border:1px solid #e2ddd7;border-radius:10px;place-items:center;width:36px;height:36px;display:grid}.solution-ai-panel>header>button svg{width:17px}.solution-ai-messages{background:#f7f5f2;flex-direction:column;flex:1;gap:10px;min-height:0;padding:15px;display:flex;overflow:auto}.solution-ai-empty{text-align:center;flex-direction:column;align-items:center;margin:auto;padding:20px 12px;display:flex}.solution-ai-empty>svg{color:#353980;background:#e9e8fb;border-radius:12px;width:37px;height:37px;padding:9px}.solution-ai-empty strong{margin-top:11px;font-size:13px}.solution-ai-empty small{color:#817b78;max-width:260px;margin:4px 0 12px;font-size:8px;line-height:1.55}.solution-ai-empty button{color:#45415c;cursor:pointer;background:#fff;border:1px solid #ded9e8;border-radius:9px;width:100%;max-width:270px;margin-top:6px;padding:9px;font-size:8px;font-weight:800}.solution-ai-empty button:hover{background:#f5f4ff;border-color:#8582ba}.solution-ai-message{flex-direction:column;gap:3px;max-width:88%;display:flex}.solution-ai-message.user{align-self:flex-end}.solution-ai-message small{color:#898287;padding:0 3px;font-size:7px}.solution-ai-message.user small{text-align:right}.solution-ai-message p{color:#37333a;white-space:pre-wrap;background:#fff;border:1px solid #e2ddd7;border-radius:4px 13px 13px;margin:0;padding:10px 12px;font-size:9px;line-height:1.65}.solution-ai-message.user p{color:#fff;background:#20245d;border:0;border-radius:13px 4px 13px 13px}.solution-ai-thinking{color:#77717b;align-items:center;gap:4px;padding:9px 11px;font-size:8px;display:flex}.solution-ai-thinking span{background:#7773b1;border-radius:50%;width:5px;height:5px;animation:1s infinite solution-ai-pulse}.solution-ai-thinking span:nth-child(2){animation-delay:.14s}.solution-ai-thinking span:nth-child(3){animation-delay:.28s}@keyframes solution-ai-pulse{0%,70%,to{opacity:.3;transform:translateY(0)}35%{opacity:1;transform:translateY(-3px)}}.solution-ai-error{color:#b31d1d;background:#fff0ef;border-radius:9px;align-items:flex-start;gap:6px;margin:0;padding:9px 10px;font-size:8px;line-height:1.45;display:flex}.solution-ai-error svg{flex:none;width:14px}.solution-ai-panel>form{background:#fff;border-top:1px solid #e3ded8;grid-template-columns:1fr 42px;gap:7px;padding:10px;display:grid}.solution-ai-panel textarea{resize:vertical;color:#302d34;min-height:62px;max-height:130px;font:inherit;border:1px solid #ddd8d2;border-radius:10px;outline:0;padding:10px;font-size:9px;line-height:1.5}.solution-ai-panel textarea:focus{border-color:#7773b1;box-shadow:0 0 0 3px #eeedff}.solution-ai-panel form>button{color:#fff;cursor:pointer;background:#20245d;border:0;border-radius:10px}.solution-ai-panel form>button:disabled{opacity:.4;cursor:not-allowed}.solution-ai-panel form>button svg{width:17px}.solution-ai-panel>footer{padding:0 12px max(9px,env(safe-area-inset-bottom));color:#999197;text-align:center;background:#fff;font-size:7px}.recovery-full-image{-webkit-overflow-scrolling:touch;width:100%;height:100%;padding:20px max(20px,env(safe-area-inset-right)) max(20px,env(safe-area-inset-bottom)) max(20px,env(safe-area-inset-left));overscroll-behavior:contain;background:#eceae6;overflow:auto}.recovery-full-image>.zoomable-problem-image{align-items:start;width:min(1040px,100%);margin:0 auto}.recovery-full-image>.zoomable-problem-image>img{cursor:zoom-in;background:#fff;width:100%;height:auto;display:block;box-shadow:0 18px 50px #18161424}.recovery-full-image>.zoomable-problem-image>button{float:right;margin:-46px 12px 12px 0;position:sticky;bottom:12px;right:12px}.similar-practice{-webkit-overflow-scrolling:touch;height:100%;padding:22px max(22px,env(safe-area-inset-right)) max(28px,env(safe-area-inset-bottom)) max(22px,env(safe-area-inset-left));background:#f2f0ec;overflow:auto}.similar-practice-head{justify-content:space-between;align-items:center;gap:12px;width:min(920px,100%);margin:0 auto 12px;display:flex}.similar-practice-head>span{color:#087a55;align-items:center;gap:7px;font-size:13px;font-weight:900;display:flex}.similar-practice-head svg{width:18px}.similar-practice-head small{color:#77716d;font-size:9px}.similar-problem-image{background:#fff;border:1px solid #e3ded7;border-radius:15px;place-items:center;width:min(920px,100%);margin:0 auto;padding:18px;display:grid;box-shadow:0 12px 30px #1e1b1812}.similar-problem-image img{object-fit:contain;width:100%;height:auto;max-height:520px;display:block}.similar-answer-form{background:#20245d;border-radius:13px;grid-template-columns:1fr auto;gap:8px;width:min(920px,100%);margin:12px auto 0;padding:12px;display:grid}.similar-answer-form .math-input-row{background:#fff}.similar-answer-form>button{color:#20245d;cursor:pointer;background:#fff;border:0;border-radius:9px;min-width:112px;font-size:9px;font-weight:900}.similar-answer-form>button:disabled{opacity:.52;cursor:not-allowed}.similar-answer-form>p{color:#fff;background:#ffffff1c;border-radius:8px;grid-column:1/-1;justify-content:center;align-items:center;gap:6px;margin:0;padding:8px 10px;font-size:9px;font-weight:800;display:flex}.similar-answer-form>p svg{width:16px}.similar-answer-form.is-correct{background:#087a55}.similar-answer-form.is-wrong{background:#8f1e24}.similar-solution,.similar-solution-locked{background:#fff;border:1px solid #dfdbd5;border-radius:15px;width:min(920px,100%);margin:12px auto 0;overflow:hidden}.similar-solution>header,.similar-solution-locked{align-items:center;gap:9px;padding:13px 15px;display:flex}.similar-solution>header{border-bottom:1px solid #ebe7e2}.similar-solution>header svg,.similar-solution-locked>svg{color:#087a55;flex:none;width:19px}.similar-solution>header span,.similar-solution-locked span{flex-direction:column;gap:2px;display:flex}.similar-solution strong,.similar-solution-locked strong{font-size:10px}.similar-solution small,.similar-solution-locked small{color:#847d78;font-size:8px}.similar-solution>.zoomable-problem-image{align-items:start;padding:16px}.similar-solution img{width:100%;height:auto;display:block}.similar-solution-locked{box-sizing:border-box;color:#625d59}.similar-solution-locked>svg{color:#a39b94}.recovery-empty-resource{text-align:center;flex-direction:column;justify-content:center;align-items:center;height:100%;padding:30px;display:flex;overflow:auto}.recovery-empty-resource>span{color:#d00000;background:#fff0ef;border-radius:17px;place-items:center;width:54px;height:54px;display:grid}.recovery-empty-resource h3{margin:14px 0 5px;font-size:17px}.recovery-empty-resource p{color:#817a76;max-width:420px;margin:0 0 18px;font-size:9px;line-height:1.65}.recovery-empty-resource>div{text-align:left;background:#fff;border:1px solid #e7e1da;border-radius:10px;grid-template-columns:28px 1fr;align-items:center;width:min(460px,100%);margin-top:7px;padding:11px 13px;display:grid}.recovery-empty-resource b{color:#d00000;font-size:9px}.recovery-empty-resource strong{font-size:10px}.recovery-retry-dock{color:#fff;background:#20245d;border-top:1px solid #ded9d2;grid-template-columns:minmax(250px,.75fr) minmax(420px,1.25fr);align-items:center;gap:14px;min-height:94px;padding:12px 17px;display:grid}.recovery-retry-copy{align-items:center;gap:10px;display:flex}.recovery-retry-copy>svg{color:#ffbbb6}.recovery-retry-copy span{flex-direction:column;gap:3px;display:flex}.recovery-retry-copy strong{font-size:11px}.recovery-retry-copy small{color:#b8bad0;font-size:8px}.recovery-retry-entry{grid-template-columns:1fr auto;gap:7px;display:grid}.recovery-retry-entry .math-input-row{background:#fff}.recovery-retry-entry>button{color:#20245d;cursor:pointer;background:#fff;border:0;border-radius:9px;min-width:105px;font-size:9px;font-weight:900}.recovery-retry-entry>button:disabled{opacity:.5;cursor:not-allowed}.recovery-retry-result{background:#ffffff1a;border-radius:8px;grid-column:1/-1;justify-content:center;align-items:center;gap:6px;padding:7px 10px;font-size:9px;font-weight:750;display:flex}.recovery-retry-result svg{width:15px}.recovery-retry-dock.is-correct{background:#087a55}.recovery-retry-dock.is-wrong{background:#8f1e24}.empty-wrong-note{flex-direction:column;justify-content:center;align-items:center;min-height:280px;display:flex}.empty-wrong-note>div{color:#0b9865;background:linear-gradient(145deg,#e8f9f1,#c9efdd);border-radius:18px;place-items:center;width:56px;height:56px;display:grid;box-shadow:0 12px 24px #0a8b5b1a}.empty-wrong-note h3{margin:15px 0 5px;font-size:15px}.empty-wrong-note p{color:#969096;margin:0;font-size:10px}.submit-dock{background:linear-gradient(135deg,#24273a,#151724);border:1px solid #36394c;box-shadow:0 20px 45px #181a2a47,inset 0 1px #ffffff17}.modal-card{border:1px solid #ffffff8c;box-shadow:0 35px 100px #11121a52,inset 0 1px #fff}.upload-zone{background:linear-gradient(145deg,snow,#fff3f2);border-color:#f0aaa6}.upload-icon{color:#df0000;background:linear-gradient(145deg,#ffe7e5,#ffcfc9);box-shadow:0 9px 18px #c400001a,inset 0 1px #fff}.upload-zone em{color:#c80000;background:#ffe7e5}@media (width<=1050px){.hero-3d{opacity:.44;width:64%;right:-9%}.hero-copy{max-width:520px}.teacher-login-page{grid-template-columns:1fr;place-items:center}.teacher-login-visual{display:none}.student-management-grid,.problem-stat-grid{grid-template-columns:1fr 1fr}.exam-management-grid{grid-template-columns:1fr}.exam-form{grid-template-columns:1fr 1fr}.exam-duration-control{grid-template-columns:1fr auto 78px auto}.subject-tabs{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (width<=700px){.topbar{height:68px}.header-logo{width:36px;height:36px}.student-topbar-title{margin-left:auto;margin-right:10px;position:static;transform:none}.student-topbar-title>span{border-radius:11px;width:34px;height:34px}.student-topbar-title>div{display:none}.student-top-profile{grid-template-columns:32px;min-width:0;padding:5px}.student-top-profile>span{border-radius:10px;width:32px;height:32px}.student-top-profile>div{display:none}.teacher-entry-button{padding:0 10px;font-size:8px}.welcome-row{align-items:flex-start;min-height:430px;padding:27px 22px}.welcome-row h1{font-size:34px}.welcome-row p{max-width:270px}.hero-copy{z-index:3}.hero-3d{opacity:.58;width:100%;height:240px;bottom:-8px;right:-22%}.hero-proof{display:none}.metric-grid{margin-top:14px}.student-login-page:before,.teacher-login-page:before{display:none}.student-3d-image{height:340px}.student-login-page{padding-top:24px}.teacher-login-page{box-sizing:border-box;width:100%;padding:24px 16px}.teacher-login-page .login-card{box-sizing:border-box;width:100%;min-width:0;max-width:100%}.teacher-login-page .code-input input{min-width:0}.login-logo{width:175px}.login-card:after{display:none}.identity-fields{grid-template-columns:1fr}.workspace-tabs{width:100%;overflow-x:auto}.workspace-tabs button{flex:1;justify-content:center;min-width:max-content;padding:9px 11px}.learning-home-intro{flex-direction:column;align-items:flex-start;gap:18px;min-height:0;padding:22px 19px}.learning-home-intro h2{font-size:22px}.learning-home-intro>button{width:100%}.learning-choice-grid{grid-template-columns:1fr}.learning-library{padding:15px}.learning-card-list h4{font-size:13px}.learning-item-status>small{max-width:170px}.wrong-notebook{padding:18px 14px}.wrong-notebook-head{align-items:flex-start;gap:18px}.wrong-note-grid{grid-template-columns:1fr}.hidden-toggle strong{display:none}.mobile-nav button.active{color:#d00000;background:#fff0ef;font-weight:800}.management-head{flex-direction:column;align-items:flex-start;gap:16px}.management-head h1{font-size:30px}.management-summary{grid-template-columns:1fr 1fr}.management-summary>span:last-child{grid-column:1/-1}.student-management-grid{grid-template-columns:1fr}.analytics-list{padding:0 15px 12px}.analytics-list article{grid-template-columns:90px 1fr 42px;gap:9px;padding:12px 0}.analytics-list article>small{text-align:left;grid-column:2/4}.student-card-stats{gap:5px}.problem-analytics-head{gap:12px}.problem-analytics-head>.badge{display:none}.analytics-subject-filter{padding:0 14px 10px}.assignment-filter{padding:0 14px 14px}.problem-stat-grid{grid-template-columns:1fr;padding:0 14px 15px}.problem-dialog-backdrop{padding:0}.problem-dialog{border-radius:0;width:100%;height:100%;max-height:none}.problem-dialog-body{grid-template-columns:1fr;padding:16px}.problem-dialog-preview{min-height:280px}.problem-dialog-body aside{grid-template-columns:repeat(3,1fr)}.problem-dialog-body aside>span{min-height:78px}.problem-dialog-body aside .correct-answer{grid-column:1/-1}.problem-dialog>header,.problem-dialog>footer{padding-left:16px;padding-right:16px}}@media (width<=900px){.recovery-dialog.show-problem .recovery-layout{grid-template-columns:1fr;gap:8px;padding:8px;overflow:auto}.recovery-problem-pane{min-height:400px}.recovery-dialog.show-problem .recovery-learning-pane{min-height:calc(100vh - 90px)}.recovery-retry-dock{grid-template-columns:1fr}.recovery-retry-copy small{display:none}}@media (width<=700px){.solution-link-editor{grid-template-columns:1fr;margin:0 16px 18px}.solution-link-editor label:nth-of-type(3),.solution-link-heading,.solution-link-actions{grid-column:auto}.solution-link-heading>.badge{display:none}.solution-link-actions{flex-direction:column;align-items:stretch}.solution-link-actions button{justify-content:center}.recovery-dialog>header{min-height:62px;padding:max(8px,env(safe-area-inset-top)) max(9px,env(safe-area-inset-right)) 8px max(12px,env(safe-area-inset-left))}.recovery-dialog>header h2{font-size:14px}.recovery-dialog>header p{text-overflow:ellipsis;white-space:nowrap;max-width:150px;overflow:hidden}.recovery-dialog>header .badge{display:none}.recovery-header-actions{gap:4px}.recovery-header-actions button{width:38px;min-height:38px;padding:0;font-size:0}.recovery-header-actions button svg{width:17px}.recovery-header-actions .recovery-back-button{width:auto;min-width:88px;padding:0 12px;font-size:9px}.recovery-layout{gap:0;padding:0}.recovery-dialog.show-problem .recovery-layout{gap:6px;padding:6px}.recovery-problem-pane{min-height:340px;padding:11px}.recovery-problem-preview{min-height:230px}.recovery-dialog.show-problem .recovery-learning-pane{min-height:calc(100dvh - 74px)}.recovery-tabs button{font-size:0}.recovery-tabs button svg{width:18px}.recovery-tabs button i{right:15px}.recovery-flow-bar{min-height:45px;padding:6px 8px}.recovery-flow-bar>span{display:none}.recovery-flow-bar>div{width:100%}.recovery-flow-bar button{flex:1;min-height:34px}.recovery-flow-bar .recovery-next-button{flex:1.6;justify-content:center}.recovery-content>a{right:9px;bottom:max(9px,env(safe-area-inset-bottom));padding:9px;font-size:0}.recovery-full-image{padding:8px max(8px,env(safe-area-inset-right)) max(8px,env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left))}.similar-practice{padding:12px max(10px,env(safe-area-inset-right)) max(18px,env(safe-area-inset-bottom)) max(10px,env(safe-area-inset-left))}.similar-practice-head{flex-direction:column;align-items:flex-start;gap:3px}.similar-problem-image{box-sizing:border-box;padding:10px}.similar-answer-form{box-sizing:border-box;grid-template-columns:1fr;padding:9px}.similar-answer-form>button{min-height:42px}.similar-solution,.similar-solution-locked{box-sizing:border-box}.similar-solution>.zoomable-problem-image{padding:8px}.recovery-empty-resource{padding:20px 14px}.recovery-retry-dock{padding:9px max(9px,env(safe-area-inset-right)) max(9px,env(safe-area-inset-bottom)) max(9px,env(safe-area-inset-left))}.recovery-retry-entry{grid-template-columns:1fr}.recovery-retry-entry>button{min-height:42px}.wrong-note-actions{flex-wrap:wrap;align-items:stretch}.wrong-note-actions .recovery-start-button{min-width:105px}.hide-wrong-button{font-size:0}.hide-wrong-button svg{width:16px}.recovery-steps-back-button{top:max(8px,env(safe-area-inset-top));left:max(8px,env(safe-area-inset-left));min-height:42px;padding:6px 10px}.recovery-steps-back-button small{display:none}.recovery-dialog.steps-fullscreen .recovery-layout,.recovery-dialog.steps-fullscreen .recovery-learning-pane,.recovery-dialog.steps-fullscreen .recovery-content{min-height:100dvh}.solution-ai-launch{top:max(8px,env(safe-area-inset-top));right:max(8px,env(safe-area-inset-right));min-height:42px;padding:0 11px}.solution-ai-launch span{display:none}.solution-ai-panel{border-top:1px solid #d9d4cf;border-left:0;border-radius:18px 18px 0 0;width:100%;height:min(64dvh,580px);top:auto;bottom:0;left:0;transform:translateY(102%);box-shadow:0 -18px 48px #1c191838}.solution-ai-panel.open{transform:translateY(0)}.solution-ai-panel>header{min-height:58px;padding:10px 12px}.solution-ai-panel>header>span>svg{width:32px;height:32px}.solution-ai-messages{padding:11px}.solution-ai-panel>form{padding:8px}.solution-ai-panel textarea{min-height:48px;max-height:90px}.subject-library{padding:15px 13px}.subject-library>header{flex-direction:column;align-items:flex-start;gap:5px}.subject-tabs{scroll-snap-type:x proximity;padding-bottom:3px;display:flex;overflow-x:auto}.subject-tabs button{scroll-snap-align:start;flex:0 0 116px}.semester-tabs{overflow-x:auto}.semester-tabs>span{display:none}.semester-tabs button{flex:none}.management-panel .panel-heading{align-items:flex-start}.student-register-dialog,.assignment-assign-dialog{border-radius:0;width:100%;height:100%;max-height:none}.student-register-dialog>header,.assignment-assign-dialog>header{padding:20px 17px}.student-register-dialog form,.assignment-assign-dialog form{padding:20px 17px 0}.student-register-dialog form>footer,.assignment-assign-dialog form>footer{margin:6px -17px 0;padding:15px 17px}.management-panel .assignment-row{grid-template-columns:38px 1fr auto}.management-panel .assignment-row>.badge,.management-panel .assignment-rate{display:none}.assignment-action-button{min-width:82px}.assignment-student-list{grid-template-columns:1fr;max-height:none}.student-register-dialog form>footer{flex-wrap:wrap}.student-register-dialog form>footer .danger-outline-button{order:-1;width:100%}.student-login-modes button{font-size:8px}.password-setup-card{box-sizing:border-box;width:100%}}.student-entry-page{isolation:isolate;background:#e3e3e3;grid-template-columns:minmax(440px,42%) minmax(0,58%);align-items:stretch;width:100%;max-width:none;min-height:calc(100dvh - 80px);margin:0;padding:0;display:grid;overflow:hidden}.student-entry-page:before{display:none}.student-entry-copy{z-index:2;background:linear-gradient(90deg,#f4f5f3 0%,#f1f2f0 74%,#e8e9e7e6 100%);flex-direction:column;justify-content:center;min-width:0;padding:48px clamp(32px,5vw,84px);display:flex;position:relative}.student-entry-copy .login-logo{filter:none;width:188px;height:44px;margin:0 0 clamp(34px,5vh,58px)}.student-entry-heading{max-width:560px}.student-entry-heading h1{color:#202126;letter-spacing:-.045em;margin:0;font-size:clamp(34px,3vw,50px);font-weight:720;line-height:1.14}.student-entry-heading h1 em{color:#b91c1c;text-shadow:none;font-style:normal;font-weight:720}.student-entry-heading p{color:#666a70;word-break:keep-all;max-width:480px;margin:22px 0 0;font-size:14px;line-height:1.75}.student-entry-symbol{color:#c91518;background:#ffffffad;border:1px solid #d7d7d5;border-radius:14px;place-items:center;width:44px;height:44px;margin-bottom:20px;display:grid}.student-entry-login,.student-entry-copy.password-setup-card form{width:100%;max-width:520px;margin-top:34px}.student-entry-page .student-login-modes{background:0 0;border-bottom:1px solid #cfd1d2;border-radius:0;gap:24px;margin:0 0 22px;padding:0;display:flex}.student-entry-page .student-login-modes button{color:#74777c;min-height:0;box-shadow:none;background:0 0;border-radius:0;padding:0 0 13px;font-size:11px;font-weight:760;position:relative}.student-entry-page .student-login-modes button.active{color:#202126;box-shadow:none;background:0 0}.student-entry-page .student-login-modes button.active:after{content:"";background:#c91518;height:2px;position:absolute;bottom:-1px;left:0;right:0}.student-entry-page .identity-fields{grid-template-columns:.88fr 1.12fr;gap:12px}.student-entry-page .identity-fields>label{color:#4e5258;font-size:11px}.student-entry-page .identity-input,.student-entry-page .code-input{background:#ffffffe6;border-color:#cfd1d2;border-radius:12px;height:54px;margin-top:8px}.student-entry-page .code-input button{width:54px;box-shadow:none;background:#c91518;transition:background .2s,transform .2s}.student-entry-page .code-input button:hover{background:#a90f12}.student-entry-page .code-input button:active{transform:scale(.97)}.student-entry-page .privacy-note{color:#74777b;background:0 0;border-top:1px solid #d6d7d7;border-radius:0;margin-top:18px;padding:11px 0 0;line-height:1.5}.learning-journey-visual{z-index:1;background:#e3e3e3;align-items:center;min-width:0;min-height:520px;margin:0;animation:.9s cubic-bezier(.16,1,.3,1) both journey-enter;display:flex;position:relative;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,#0000 0%,#000 13%);mask-image:linear-gradient(90deg,#0000 0%,#000 13%)}.learning-journey-visual img,.learning-journey-visual .learning-journey-video{width:100%;max-width:100%;height:100%;display:block;transform:none}.learning-journey-visual .learning-journey-video{object-fit:contain;object-position:center}.video-brand-lockup{z-index:5;-webkit-backdrop-filter:blur(14px);pointer-events:none;background:#f7f7f5c7;border:1px solid #ffffffc7;border-radius:13px;align-items:center;gap:9px;padding:9px 12px 9px 9px;display:flex;position:absolute;box-shadow:0 12px 30px #1c1d211f}.video-brand-lockup img{object-fit:contain;filter:none;width:29px;height:29px}.video-brand-lockup span{flex-direction:column;gap:1px;display:flex}.video-brand-lockup strong{color:#202126;letter-spacing:.08em;font-size:10px;font-weight:900;line-height:1}.video-brand-lockup small{color:#b91c1c;letter-spacing:.16em;font-size:6px;font-weight:850;line-height:1}.student-video-brand{bottom:clamp(18px,4vh,42px);right:clamp(18px,3vw,46px)}.teacher-video-brand{transform-origin:100% 0;top:22px;right:24px;transform:scale(.88)}.student-session-page .student-entry-copy{justify-content:center}.session-loading-status{color:#676a70;border-top:1px solid #cfd1d2;align-items:center;gap:13px;width:min(420px,100%);margin-top:34px;padding-top:18px;display:flex}.session-loading-status span{transform-origin:0;background:#c91518;width:48px;height:2px;animation:1.4s cubic-bezier(.16,1,.3,1) infinite session-line;display:block}.session-loading-status strong{font-size:11px;font-weight:720}.session-symbol svg{animation:1.2s linear infinite spin}@keyframes journey-enter{0%{opacity:0;transform:translate(28px)}to{opacity:1;transform:translate(0)}}@keyframes session-line{0%,to{opacity:.45;transform:scaleX(.28)}55%{opacity:1;transform:scaleX(1)}}@media (prefers-reduced-motion:reduce){.learning-journey-visual,.session-loading-status span,.session-symbol svg{animation:none}}@media (width<=1050px){.student-entry-page{grid-template-columns:minmax(390px,46%) minmax(0,54%)}.student-entry-copy{padding-left:36px;padding-right:30px}.student-entry-heading h1{font-size:38px}.learning-journey-visual img,.learning-journey-visual .learning-journey-video{width:100%;transform:none}.student-video-brand{bottom:20px;right:20px}}@media (width<=760px){.student-entry-page{grid-template-rows:auto minmax(245px,34vh);grid-template-columns:1fr;min-height:calc(100dvh - 68px);overflow:visible}.student-entry-copy{background:linear-gradient(#f4f5f3 0%,#eff0ee 100%);padding:30px 20px 12px}.student-entry-copy .login-logo{width:155px;height:38px;margin-bottom:30px}.student-entry-heading h1{font-size:clamp(29px,8.7vw,36px);line-height:1.16}.student-entry-heading p{margin-top:16px;font-size:12px;line-height:1.65}.student-entry-login,.student-entry-copy.password-setup-card form{margin-top:26px}.student-entry-page .identity-fields{grid-template-columns:1fr;gap:14px}.student-entry-page .student-login-modes{gap:20px;overflow-x:auto}.student-entry-page .student-login-modes button{flex:none;font-size:10px}.learning-journey-visual{min-height:245px;-webkit-mask-image:linear-gradient(#0000 0%,#000 14%);mask-image:linear-gradient(#0000 0%,#000 14%)}.learning-journey-visual img,.learning-journey-visual .learning-journey-video{width:100%;transform:none}.video-brand-lockup{border-radius:11px;gap:7px;padding:7px 9px 7px 7px}.video-brand-lockup img{width:23px;height:23px}.video-brand-lockup strong{font-size:8px}.video-brand-lockup small{font-size:5px}.student-video-brand{bottom:12px;right:12px}.teacher-video-brand{top:12px;right:12px;transform:scale(.76)}.student-entry-symbol{margin-bottom:16px}.student-session-page .learning-journey-visual{min-height:290px}}@media (width<=700px){.register-field-row,.exam-form{grid-template-columns:1fr}.exam-security-strip{align-items:flex-start}.exam-security-strip>.badge{display:none}.exam-admin-card{padding:15px}.exam-admin-metrics{grid-template-columns:repeat(2,1fr)}.exam-admin-metrics>span:last-child{grid-column:1/-1}.school-score-list>span{grid-template-columns:1fr auto}.school-score-list b,.school-score-list small{text-align:right}.exam-center{padding:16px}.exam-center-head{flex-direction:column}.exam-safety{width:100%}.student-exam-list article{grid-template-columns:42px 1fr}.exam-list-time{display:none}.student-exam-list article>button,.exam-library-only{grid-column:1/-1;justify-content:center}.exam-grade-tabs{flex-wrap:nowrap;padding-bottom:3px;overflow-x:auto}.exam-grade-tabs button{flex:none}.exam-running>header{align-items:flex-start;gap:12px;padding:12px;top:72px}.exam-running>header h2{font-size:14px}.exam-running>header p{display:none}.exam-countdown{min-width:118px;padding:8px}.exam-countdown strong{font-size:18px}.exam-problem-grid{grid-template-columns:1fr}.exam-result-score{grid-template-columns:1fr 1fr}.exam-result-score>span:first-child{grid-column:1/-1}.exam-submit-dock small{display:none}.math-keypad{grid-template-columns:repeat(4,1fr)}.math-keypad-toggle span{display:none}.exam-duration-control{grid-template-columns:1fr 72px auto}.exam-duration-control>div:first-child{grid-column:1/-1}.duration-presets{grid-column:1/-1;overflow-x:auto}.exam-time-presets{overflow-x:auto}.exam-class-selector>span{display:none}}.assignment-tracking-page{gap:18px;display:grid}.tracking-toolbar{background:#fff;border:1px solid #e6e1db;border-radius:16px;justify-content:space-between;align-items:flex-end;gap:14px;padding:14px 16px;display:flex;box-shadow:0 12px 30px #261f1b0d}.tracking-toolbar label{color:#7b7474;flex-direction:column;gap:6px;font-size:8px;font-weight:850;display:flex}.tracking-toolbar select{color:#29262b;background:#faf9f7;border:1px solid #ded8d2;border-radius:10px;outline:0;min-width:180px;height:41px;padding:0 12px;font-size:10px;font-weight:800}.tracking-toolbar select:focus{border-color:#e40000;box-shadow:0 0 0 3px #fff0ef}.tracking-view-switch{background:#f1eeea;border-radius:12px;gap:6px;padding:4px;display:flex}.tracking-view-switch button{color:#787174;cursor:pointer;background:0 0;border:0;border-radius:9px;align-items:center;gap:6px;min-height:36px;padding:0 13px;font-size:9px;font-weight:850;display:flex}.tracking-view-switch button svg{width:15px}.tracking-view-switch button.active{color:#d00000;background:#fff;box-shadow:0 5px 13px #261f1b1a}.tracking-metrics{margin:0}.tracking-class-section,.tracking-master-list,.tracking-detail-panel{background:#fff;border:1px solid #e5e0da;border-radius:18px;box-shadow:0 14px 34px #29221e0e}.tracking-class-section{padding:18px}.tracking-section-heading{justify-content:space-between;align-items:flex-end;gap:14px;display:flex}.tracking-section-heading h2{margin:4px 0 0;font-size:17px}.tracking-section-heading>small{color:#928b8b;font-size:8px}.tracking-class-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px;display:grid}.tracking-class-grid>button{text-align:left;cursor:pointer;background:#fbfaf8;border:1px solid #e8e3dd;border-radius:13px;grid-template-columns:1fr auto;gap:8px;padding:14px;display:grid}.tracking-class-grid>button:hover,.tracking-class-grid>button.active{background:#fff7f6;border-color:#efaaa6;box-shadow:0 9px 22px #9a191214}.tracking-class-grid>button>span{flex-direction:column;gap:3px;min-width:0;display:flex}.tracking-class-grid strong{text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.tracking-class-grid small{color:#90898a;font-size:7.5px}.tracking-class-grid b{color:#d00000;font-size:18px}.tracking-class-grid>button>div{background:#ece8e4;border-radius:6px;grid-column:1/-1;height:6px;overflow:hidden}.tracking-class-grid>button>div i{border-radius:inherit;background:linear-gradient(90deg,#ef2b24,#c90000);height:100%;display:block}.tracking-class-grid em{color:#777174;grid-column:1/-1;font-size:7.5px;font-style:normal}.tracking-workspace{grid-template-columns:minmax(280px,.7fr) minmax(0,1.3fr);align-items:start;gap:14px;display:grid}.tracking-master-list{overflow:hidden}.tracking-master-list>.tracking-section-heading{border-bottom:1px solid #ece7e1;padding:17px}.tracking-master-scroll{max-height:650px;padding:8px;overflow:auto}.tracking-master-scroll>button{text-align:left;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:11px;grid-template-columns:1fr auto;gap:7px;width:100%;padding:12px;display:grid;position:relative}.tracking-master-scroll>button:hover,.tracking-master-scroll>button.active{background:#fff7f5;border-color:#eaded8}.tracking-master-scroll>button>span{flex-direction:column;gap:4px;min-width:0;display:flex}.tracking-master-scroll>button small{color:#91898a;font-size:7.5px}.tracking-master-scroll>button strong{text-overflow:ellipsis;white-space:nowrap;font-size:10px;overflow:hidden}.tracking-master-scroll>button>div{align-items:center;gap:7px;display:flex}.tracking-master-scroll>button>div b{font-size:9px}.tracking-master-scroll>button>div em{color:#d00000;font-size:10px;font-style:normal;font-weight:900}.tracking-master-scroll>button>i{background:#ece8e4;border-radius:4px;grid-column:1/-1;height:4px;overflow:hidden}.tracking-master-scroll>button>i span{border-radius:inherit;background:#0a9b67;height:100%;display:block}.tracking-master-scroll mark{color:#c80000;background:#fff0ef;border-radius:5px;grid-column:1/-1;width:max-content;padding:3px 6px;font-size:7px;font-weight:850}.tracking-detail-panel{min-width:0;overflow:hidden}.tracking-detail-panel>header{border-bottom:1px solid #eae5df;justify-content:space-between;align-items:flex-end;gap:15px;padding:17px;display:flex}.tracking-detail-panel>header h2{margin:4px 0;font-size:18px}.tracking-detail-panel>header p{color:#888183;margin:0;font-size:8px}.tracking-status-filter{flex-wrap:wrap;justify-content:flex-end;gap:5px;display:flex}.tracking-status-filter button{color:#777074;cursor:pointer;background:#fff;border:1px solid #e2ddd7;border-radius:8px;min-height:31px;padding:0 9px;font-size:7.5px;font-weight:850}.tracking-status-filter button.active{color:#fff;background:#d80000;border-color:#d80000}.tracking-table-wrap{min-height:260px;position:relative;overflow:auto}.tracking-table-wrap table{border-collapse:collapse;width:100%;min-width:660px}.tracking-table-wrap th{color:#8c8585;text-align:left;letter-spacing:.04em;background:#faf8f5;padding:10px 13px;font-size:7.5px}.tracking-table-wrap td{color:#5f595d;border-top:1px solid #eeeae5;padding:12px 13px;font-size:9px}.tracking-table-wrap td:first-child{flex-direction:column;gap:3px;display:flex}.tracking-table-wrap td:first-child strong{color:#262329;font-size:10px}.tracking-table-wrap td:first-child small{color:#9b9495;font-size:7px}.tracking-status{border-radius:7px;width:max-content;padding:5px 7px;font-size:7.5px;font-weight:900;display:inline-flex}.tracking-status.completed{color:#087a55;background:#e8f8f0}.tracking-status.pending{color:#ae5d00;background:#fff6e7}.tracking-status.overdue{color:#c80000;background:#fff0ef}.tracking-empty{color:#9a9394;text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:7px;min-height:220px;padding:24px;display:flex}.tracking-empty svg{width:25px}.tracking-empty strong{color:#5a5558;font-size:10px}.tracking-empty small{font-size:7.5px}@media (width<=1100px){.tracking-class-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tracking-workspace{grid-template-columns:1fr}.tracking-master-scroll{max-height:360px}}@media (width<=700px){.mobile-nav{justify-content:flex-start;overflow-x:auto}.mobile-nav button{flex:none;min-width:72px}.tracking-toolbar{flex-direction:column;align-items:stretch}.tracking-toolbar select{width:100%}.tracking-view-switch button{flex:1;justify-content:center}.tracking-class-grid{grid-template-columns:1fr}.tracking-detail-panel>header{flex-direction:column;align-items:flex-start}.tracking-status-filter{justify-content:flex-start}.tracking-status-filter button{min-height:34px}.tracking-table-wrap{margin:0 -1px}.tracking-table-wrap th,.tracking-table-wrap td{padding-left:10px;padding-right:10px}}.nav-count{color:#fff;background:#e00000;border-radius:9px;place-items:center;min-width:18px;height:18px;padding:0 5px;font-size:8px;display:grid}.problem-card.review-pending{background:#fffdf7;border-color:#f2c36b}.review-pending .result-icon{color:#d97706}.review-pending .math-input-row{border-color:#e8b554}.written-answer-upload{background:#faf9f7;border:1px solid #e7e1db;border-radius:11px;margin-top:10px;padding:11px}.written-upload-heading{justify-content:space-between;align-items:center;gap:8px;display:flex}.written-upload-heading>span{align-items:center;gap:6px;display:flex}.written-upload-heading strong{font-size:10px}.written-upload-heading small{color:#8a827d;font-size:8px}.written-upload-actions{grid-template-columns:1fr 1fr;gap:7px;margin-top:9px;display:grid}.written-upload-actions label{color:#5d554f;cursor:pointer;background:#fff;border:1px solid #ddd5ce;border-radius:8px;justify-content:center;align-items:center;gap:6px;min-height:38px;font-size:9px;font-weight:850;display:flex}.written-upload-actions label:first-child{color:#c40000;background:#fff5f4;border-color:#e7a09b}.written-upload-actions input{display:none}.written-photo-list{grid-template-columns:repeat(3,1fr);gap:7px;margin-top:9px;display:grid}.written-photo-list figure{aspect-ratio:1;background:#fff;border:1px solid #dfd9d4;border-radius:8px;margin:0;position:relative;overflow:hidden}.written-photo-list img{object-fit:cover;width:100%;height:100%}.written-photo-list button{color:#fff;background:#20245de0;border:0;border-radius:7px;place-items:center;width:26px;height:26px;display:grid;position:absolute;top:4px;right:4px}.written-answer-upload>p{color:#77706b;align-items:center;gap:5px;margin:9px 0 0;font-size:8px;line-height:1.4;display:flex}.written-answer-upload>p svg{color:#6b63d9;flex:none}.review-safety-strip{background:#f6fbf8;border:1px solid #d9e5df;border-radius:14px;align-items:center;gap:13px;margin:18px 0;padding:16px 18px;display:flex}.review-safety-strip>svg{color:#087a55;background:#e2f6eb;border-radius:10px;width:34px;height:34px;padding:8px}.review-safety-strip>div{flex-direction:column;flex:1;gap:3px;display:flex}.review-safety-strip strong{font-size:12px}.review-safety-strip span{color:#6f7b75;font-size:9px}.review-filter{gap:6px;margin-bottom:13px;display:flex}.review-filter button{color:#746d68;background:#fff;border:1px solid #ded9d3;border-radius:9px;padding:9px 13px;font-size:10px;font-weight:850}.review-filter button.active{color:#fff;background:#4f46e5;border-color:#4f46e5}.written-review-list{flex-direction:column;gap:15px;display:flex}.written-review-card{background:#fff;border:1px solid #e1ddd8;border-radius:16px;overflow:hidden;box-shadow:0 10px 28px #28221e0d}.written-review-card.is-confirmed{border-color:#b9dfcc}.written-review-card>header{border-bottom:1px solid #eeeae6;justify-content:space-between;align-items:center;padding:17px 19px;display:flex}.written-review-card>header h2{margin:7px 0 3px;font-size:17px}.written-review-card>header p{color:#847d78;margin:0;font-size:9px}.review-ai-mark{color:#4f46e5;background:#f1efff;border-radius:10px;grid-template-columns:24px 1fr;align-items:center;min-width:92px;padding:8px 10px;display:grid}.review-ai-mark svg{grid-row:1/3;width:20px}.review-ai-mark small{font-size:7px}.review-ai-mark strong{font-size:11px}.written-review-content{grid-template-columns:1fr 1.35fr;gap:13px;padding:16px 19px;display:grid}.written-review-content h3{margin:0 0 9px;font-size:11px}.written-review-question,.written-review-photos{background:#fbfaf8;border:1px solid #e9e5e0;border-radius:12px;min-width:0;padding:12px}.written-review-question>.zoomable-problem-image{background:#fff;min-height:170px}.written-review-question>p{background:#fff;min-height:120px;margin:0;padding:12px;font-size:11px}.written-review-question dl{grid-template-columns:1fr 1fr;gap:7px;margin:9px 0 0;display:grid}.written-review-question dl>div{background:#fff;border-radius:8px;padding:8px}.written-review-question dt{color:#8a827d;font-size:7px}.written-review-question dd{margin:3px 0 0;font-size:10px;font-weight:850}.written-review-photos>div{grid-template-columns:repeat(3,1fr);gap:7px;display:grid}.written-review-photos .zoomable-problem-image,.review-image-loading,.review-image-failed{background:#fff;border:1px solid #e4dfda;border-radius:9px;min-height:180px}.written-review-photos .zoomable-problem-image img{object-fit:contain;width:100%;height:180px}.review-image-loading,.review-image-failed{color:#847d78;justify-content:center;align-items:center;gap:6px;font-size:8px;display:flex}.review-image-failed{color:#b42318}.review-image-failed svg{width:15px}.ai-review-summary{background:#f8f7ff;border:1px solid #dedafd;border-radius:12px;margin:0 19px 15px;padding:13px}.ai-review-summary>header{align-items:center;gap:7px;display:flex}.ai-review-summary>header>svg{color:#4f46e5;width:18px}.ai-review-summary>header strong{font-size:10px}.ai-review-summary>header .badge{margin-left:auto}.ai-review-summary>div{grid-template-columns:1fr 1fr;gap:9px;margin-top:9px;display:grid}.ai-review-summary>div>span{background:#fff;border-radius:8px;padding:9px}.ai-review-summary small{color:#7c74a7;font-size:7px;font-weight:850}.ai-review-summary p{color:#4b465f;white-space:pre-wrap;margin:4px 0 0;font-size:9px;line-height:1.55}.teacher-final-review{background:#fcfcfb;border-top:1px solid #eeeae6;padding:15px 19px 18px}.teacher-final-review>header{align-items:center;gap:8px;display:flex}.teacher-final-review>header>svg{color:#087a55;width:22px}.teacher-final-review>header>div{flex-direction:column;gap:2px;display:flex}.teacher-final-review>header strong{font-size:11px}.teacher-final-review>header small{color:#7d7975;font-size:8px}.teacher-verdict-buttons{align-items:center;gap:6px;margin:11px 0 8px;display:flex}.teacher-verdict-buttons>button{color:#655f5a;background:#fff;border:1px solid #ddd8d2;border-radius:8px;padding:9px 11px;font-size:9px;font-weight:850}.teacher-verdict-buttons>button.active{color:#4f46e5;background:#eeecff;border-color:#4f46e5}.teacher-verdict-buttons>button.active.correct{color:#078052;background:#e9f8f1;border-color:#078052}.teacher-verdict-buttons>button.active.partial{color:#a85c00;background:#fff5dc;border-color:#d97706}.teacher-verdict-buttons>button.active.incorrect{color:#c40000;background:#fff0ef;border-color:#dc2626}.teacher-verdict-buttons label{color:#706a65;align-items:center;gap:5px;margin-left:auto;font-size:8px;font-weight:850;display:flex}.teacher-verdict-buttons input{border:1px solid #dcd6d0;border-radius:8px;width:68px;height:34px;padding:0 8px;font-weight:850}.teacher-final-review textarea{box-sizing:border-box;resize:vertical;width:100%;min-height:74px;font:inherit;border:1px solid #ddd8d2;border-radius:9px;padding:10px;font-size:10px;line-height:1.5}.teacher-final-review>.publish-button{margin:9px 0 0 auto}.review-empty{text-align:center;flex-direction:column;align-items:center;padding:55px;display:flex}.review-empty>svg{color:#087a55;background:#e9f8f1;border-radius:14px;width:44px;height:44px;padding:11px}.review-empty h2{margin:13px 0 5px;font-size:17px}.review-empty p{color:#827b76;margin:0;font-size:10px}.math-rich-text{white-space:pre-wrap}.math-render{color:#28233e;vertical-align:-.13em;align-items:baseline;margin:0 .12em;font-size:1.12em;display:inline-flex}.math-render math{font-size:1em}.math-render-block{text-align:center;vertical-align:baseline;margin:.45em 0;display:block}.math-render-block math{justify-content:center}.math-render-fallback{color:#28233e;font-family:Cambria Math,Times New Roman,serif;font-size:1.05em}@media (width<=700px){.written-upload-actions{grid-template-columns:1fr}.written-review-content{grid-template-columns:1fr;padding:12px}.written-review-card>header{align-items:flex-start;gap:10px;padding:14px}.review-ai-mark{min-width:78px}.written-review-photos>div{grid-template-columns:1fr}.written-review-photos .zoomable-problem-image img{height:auto;max-height:420px}.ai-review-summary{margin:0 12px 12px}.ai-review-summary>div{grid-template-columns:1fr}.teacher-final-review{padding:14px}.teacher-verdict-buttons{grid-template-columns:1fr 1fr;display:grid}.teacher-verdict-buttons label{justify-content:space-between;margin:0}.review-safety-strip{align-items:flex-start}.review-safety-strip>.badge{display:none}.submit-dock{flex-direction:column;align-items:stretch}.submit-dock>button{justify-content:center}.math-keypad{max-height:270px;overflow-y:auto}}.exam-crop-fields{grid-template-columns:1fr 1fr;gap:7px;display:grid}.exam-crop-fields label{min-width:0}.exam-crop-fields input{box-sizing:border-box;width:100%}.student-management-card.is-clickable{cursor:pointer;transition:transform .18s,border-color .18s,box-shadow .18s}.student-management-card.is-clickable:hover,.student-management-card.is-clickable:focus-visible{border-color:#efaaa6;outline:0;transform:translateY(-3px);box-shadow:0 22px 48px #6f201b1c,inset 0 1px #fff}.student-card-actions{grid-template-columns:1fr 1fr;gap:7px;margin-top:12px;display:grid}.student-card-actions button{cursor:pointer;border-radius:9px;min-height:38px;font-size:8.5px;font-weight:850}.student-profile-button{color:#fff;background:#20245d;border:0;justify-content:center;align-items:center;gap:5px;display:flex}.student-card-actions .student-edit-button{margin:0}.student-detail-page{gap:17px;padding-bottom:60px;display:grid}.student-detail-back{color:#5f595d;cursor:pointer;background:#fff;border:1px solid #ded9d3;border-radius:10px;align-items:center;gap:7px;width:max-content;min-height:38px;padding:0 13px;font-size:9px;font-weight:850;display:flex;box-shadow:0 7px 18px #261f1b0a}.student-detail-back:hover{color:#c90000;border-color:#e9aaa6}.student-detail-hero{background:radial-gradient(circle at 86% 20%,#ff604e2e,#0000 31%),linear-gradient(135deg,#fff,#fff7f5 55%,#f4f3ff);border:1px solid #e2ddd7;border-radius:23px;justify-content:space-between;align-items:center;gap:25px;min-height:160px;padding:28px;display:flex;position:relative;overflow:hidden;box-shadow:0 20px 50px #2c231f13,inset 0 1px #fff}.student-detail-hero:after{content:"";border:28px solid #20245d0e;border-radius:50%;width:210px;height:210px;position:absolute;bottom:-85px;right:-45px}.student-detail-identity{z-index:1;align-items:center;gap:18px;display:flex}.detail-avatar{color:#fff;background:linear-gradient(145deg,#ef2d25,#bf0000);border-radius:24px;place-items:center;width:76px;height:76px;font-size:28px;display:grid;box-shadow:0 14px 28px #be000033}.student-detail-identity h1{letter-spacing:-1.2px;margin:8px 0 3px;font-size:30px}.student-detail-identity p,.student-detail-identity small{color:#777075;margin:0;font-size:9px;font-weight:750;display:block}.student-detail-identity small{color:#9a9395;margin-top:6px}.student-detail-hero-note{z-index:1;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffffbf;border:1px solid #20245d1f;border-radius:15px;align-items:flex-start;gap:10px;max-width:315px;padding:15px 17px;display:flex}.student-detail-hero-note>svg{color:#20245d;background:#ececff;border-radius:10px;flex:none;padding:7px}.student-detail-hero-note span{flex-direction:column;gap:4px;display:flex}.student-detail-hero-note strong{font-size:10px}.student-detail-hero-note small{color:#7f7980;font-size:8px;line-height:1.55}.student-detail-metrics{grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;display:grid}.student-detail-metrics article{background:#fff;border:1px solid #e6e1db;border-radius:16px;align-items:center;gap:11px;min-width:0;padding:16px;display:flex;box-shadow:0 12px 27px #28211d0d}.student-detail-metrics article>svg{color:#d00000;background:#fff0ef;border-radius:11px;flex:none;width:19px;height:19px;padding:8px}.student-detail-metrics article:nth-child(2)>svg,.student-detail-metrics article:nth-child(5)>svg{color:#20245d;background:#eeefff}.student-detail-metrics article:nth-child(3)>svg{color:#a56500;background:#fff7dc}.student-detail-metrics article:nth-child(4)>svg{color:#087a55;background:#e9f8f1}.student-detail-metrics span{gap:2px;min-width:0;display:grid}.student-detail-metrics small{color:#8c8586;font-size:7.5px}.student-detail-metrics strong{letter-spacing:-.5px;font-size:19px}.student-detail-metrics em{text-overflow:ellipsis;white-space:nowrap;color:#9c9596;font-size:7px;font-style:normal;overflow:hidden}.student-detail-tabs{background:#f1eeea;border:1px solid #e2ddd7;border-radius:14px;gap:6px;padding:5px;display:flex;overflow-x:auto}.student-detail-tabs button{color:#777074;cursor:pointer;background:0 0;border:0;border-radius:10px;flex:1;justify-content:center;align-items:center;gap:7px;min-width:max-content;min-height:40px;padding:0 14px;font-size:9px;font-weight:850;display:flex}.student-detail-tabs button span{background:#e4e0dc;border-radius:10px;place-items:center;min-width:19px;height:19px;padding:0 4px;font-size:7px;display:grid}.student-detail-tabs button.active{color:#c90000;background:#fff;box-shadow:0 6px 16px #28211d1a}.student-detail-tabs button.active span{color:#c90000;background:#fff0ef}.student-detail-overview{grid-template-columns:1fr 1fr;gap:14px;display:grid}.student-detail-wide{grid-column:1/-1}.student-detail-panel{background:#fff;border:1px solid #e4dfd9;border-radius:19px;overflow:hidden;box-shadow:0 15px 34px #2a231f0e}.student-detail-panel>header{border-bottom:1px solid #ede9e4;justify-content:space-between;align-items:center;gap:14px;min-height:66px;padding:15px 18px;display:flex}.student-detail-panel>header>span{align-items:center;gap:10px;display:flex}.student-detail-panel>header>span>svg{color:#d00000;background:#fff0ef;border-radius:10px;width:18px;height:18px;padding:7px}.student-detail-panel>header>span>div{gap:2px;display:grid}.student-detail-panel>header small{color:#9a9293;letter-spacing:.08em;font-size:6.5px}.student-detail-panel>header h2{margin:0;font-size:15px}.student-detail-panel>header>button{color:#81797b;cursor:pointer;background:0 0;border:0;align-items:center;gap:3px;font-size:8px;font-weight:850;display:flex}.student-detail-panel>header>p{color:#8c8586;max-width:360px;margin:0;font-size:8px}.student-detail-list{padding:7px}.student-detail-list>article{border-bottom:1px solid #f0ece8;grid-template-columns:1fr auto 48px;align-items:center;gap:9px;min-height:54px;padding:9px 10px;display:grid}.student-detail-list>article:last-child{border-bottom:0}.student-detail-list>article>div{gap:4px;min-width:0;display:grid}.student-detail-list strong{text-overflow:ellipsis;white-space:nowrap;font-size:9.5px;overflow:hidden}.student-detail-list small{color:#938c8d;font-size:7px}.student-detail-list b{text-align:right;font-size:12px}.student-unit-mini-list{padding:8px}.student-unit-mini-list article{grid-template-columns:135px 1fr 38px;align-items:center;gap:10px;min-height:52px;padding:9px;display:grid}.student-unit-mini-list article>div{gap:3px;min-width:0;display:grid}.student-unit-mini-list strong{text-overflow:ellipsis;white-space:nowrap;font-size:9px;overflow:hidden}.student-unit-mini-list small{color:#938b8c;font-size:7px}.student-unit-mini-list span,.student-unit-table section>span{background:#eeeae6;border-radius:6px;height:7px;overflow:hidden}.student-unit-mini-list i,.student-unit-table section i{border-radius:inherit;background:linear-gradient(90deg,#20245d,#e40000);height:100%;display:block}.student-unit-mini-list b{text-align:right;font-size:10px}.student-wrong-summary-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;padding:13px;display:grid}.student-wrong-summary-grid>article{background:#fbfaf8;border:1px solid #e9e4de;border-radius:12px;min-width:0;padding:12px}.student-wrong-summary-top{align-items:center;gap:6px;display:flex}.student-wrong-summary-top>span{text-overflow:ellipsis;white-space:nowrap;color:#81797b;font-size:7px;overflow:hidden}.student-wrong-summary-grid strong{text-overflow:ellipsis;white-space:nowrap;margin-top:9px;font-size:9px;display:block;overflow:hidden}.student-wrong-summary-grid>article>small{color:#8e8788;margin-top:4px;font-size:7px;display:block}.similar-result{color:#777;background:#f0ede9;border-radius:8px;align-items:center;gap:5px;margin-top:10px;padding:7px;font-size:7.5px;font-weight:850;display:flex}.similar-result.correct{color:#087a55;background:#e7f8ef}.similar-result.incorrect{color:#c70000;background:#fff0ef}.student-detail-table-wrap{overflow:auto}.student-detail-table-wrap table{border-collapse:collapse;width:100%;min-width:760px}.student-detail-table-wrap th{color:#8b8485;text-align:left;background:#faf8f5;padding:11px 15px;font-size:7px}.student-detail-table-wrap td{color:#625c5f;border-top:1px solid #eeeae5;padding:14px 15px;font-size:8.5px}.student-detail-table-wrap td:first-child{gap:4px;display:grid}.student-detail-table-wrap td:first-child strong{color:#29262b;font-size:10px}.student-detail-table-wrap td small{color:#989192;margin-top:3px;font-size:7px;display:block}.student-detail-table-wrap td b{color:#20245d;font-size:12px}.student-exam-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:15px;display:grid}.student-exam-grid>article{background:linear-gradient(145deg,#fff,#fbfaf8);border:1px solid #e7e2dc;border-radius:14px;padding:15px}.student-exam-grid>article>div{gap:5px;display:flex}.student-exam-grid h3{margin:12px 0 4px;font-size:13px}.student-exam-grid p{color:#8a8385;margin:0;font-size:8px}.student-exam-grid section{grid-template-columns:repeat(3,1fr);gap:6px;margin:14px 0;display:grid}.student-exam-grid section span{background:#f4f1ee;border-radius:9px;gap:4px;padding:9px 7px;display:grid}.student-exam-grid section small{color:#8b8486;font-size:6.5px}.student-exam-grid section strong{font-size:11px}.student-exam-grid>article>small{color:#938c8d;font-size:7px}.student-unit-table{padding:8px 15px 15px}.student-unit-table article{border-bottom:1px solid #eeeae5;grid-template-columns:minmax(180px,.8fr) minmax(180px,1.3fr) 55px 86px;align-items:center;gap:14px;min-height:70px;display:grid}.student-unit-table article>div{grid-template-columns:auto 1fr;align-items:center;gap:5px;min-width:0;display:grid}.student-unit-table article>div strong{text-overflow:ellipsis;white-space:nowrap;font-size:10px;overflow:hidden}.student-unit-table article>div small{color:#948d8e;grid-column:1/-1;font-size:7px}.student-unit-table section{grid-template-columns:1fr auto;align-items:center;gap:8px;display:grid}.student-unit-table section small{font-size:7px}.student-unit-table article>b{color:#d00000;text-align:right;font-size:13px}.student-unit-table article>em{color:#777074;text-align:right;font-size:7.5px;font-style:normal}.teacher-wrong-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:15px;display:grid}.teacher-wrong-grid>article{background:#fff;border:1px solid #e8e2dc;border-radius:15px;min-width:0;padding:15px;box-shadow:0 10px 24px #27201c0b}.teacher-wrong-grid>article.mastered{background:#fbfffd;border-color:#b9dfcc}.teacher-wrong-head{justify-content:space-between;align-items:center;gap:8px;display:flex}.teacher-wrong-head>span{gap:5px;display:flex}.teacher-wrong-head>small{color:#999192;font-size:7px}.teacher-wrong-grid h3{margin:12px 0 4px;font-size:12px}.teacher-wrong-grid>article>p{color:#8b8485;margin:0;font-size:8px}.teacher-wrong-preview{color:#4b4649;background:#f7f5f2;border-radius:10px;place-items:center;min-height:110px;max-height:190px;margin-top:12px;padding:10px;font-size:9px;line-height:1.6;display:grid;overflow:hidden}.teacher-wrong-preview img{object-fit:contain;width:100%;height:100%;max-height:170px}.teacher-wrong-grid dl{grid-template-columns:1fr 1fr;gap:7px;margin:9px 0;display:grid}.teacher-wrong-grid dl>div{background:#faf8f5;border-radius:9px;padding:9px}.teacher-wrong-grid dt{color:#948c8d;font-size:6.5px}.teacher-wrong-grid dd{margin:4px 0 0;font-size:9px;font-weight:850}.teacher-similar-result{color:#777;background:#f0ede9;border-radius:10px;align-items:center;gap:8px;padding:10px;display:flex}.teacher-similar-result.correct{color:#087a55;background:#e7f8ef}.teacher-similar-result.incorrect{color:#c70000;background:#fff0ef}.teacher-similar-result>svg{flex:none}.teacher-similar-result>span{gap:3px;display:grid}.teacher-similar-result strong{font-size:8.5px}.teacher-similar-result small{font-size:7px}.teacher-recovery-history{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.teacher-recovery-history>span{border:1px solid #e6e0da;border-radius:8px;align-items:center;gap:4px;padding:6px 8px;display:flex}.teacher-recovery-history i{color:#c70000;background:#fff0ef;border-radius:50%;place-items:center;width:16px;height:16px;display:grid}.teacher-recovery-history i.correct{color:#087a55;background:#e7f8ef}.teacher-recovery-history small{color:#817a7c;font-size:6.5px}.teacher-recovery-history b{font-size:7px}.teacher-wrong-actions{border-top:1px solid #eee9e4;justify-content:flex-end;margin-top:11px;padding-top:10px;display:flex}.teacher-wrong-actions button{color:#087a55;cursor:pointer;background:#e9f8f1;border:1px solid #acd8c3;border-radius:9px;justify-content:center;align-items:center;gap:6px;min-height:36px;padding:0 12px;font-size:8px;font-weight:900;display:flex}.teacher-wrong-actions button:hover{background:#dbf3e7;border-color:#79c29e}.teacher-wrong-actions button:disabled{cursor:wait;opacity:.55}.teacher-wrong-action-error{color:#ba1111;background:#fff2f1;border:1px solid #efb3ae;border-radius:10px;align-items:center;gap:7px;margin:12px 15px 0;padding:10px 12px;font-size:8px;font-weight:800;display:flex}.teacher-ai-history-list{gap:12px;padding:15px;display:grid}.teacher-ai-history-list>article{background:linear-gradient(145deg,#fff,#fafaff);border:1px solid #e5e2f3;border-radius:15px;padding:16px;box-shadow:0 10px 25px #20245d0d}.teacher-ai-history-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.teacher-ai-history-head>span{gap:6px;display:flex}.teacher-ai-history-head>small{color:#948d95;font-size:7px}.teacher-ai-history-list h3{margin:12px 0 3px;font-size:12px}.teacher-ai-history-subject{color:#8c858d;margin:0 0 12px;font-size:8px}.teacher-ai-history-message{border-radius:13px;max-width:86%;margin-top:8px;padding:11px 13px}.teacher-ai-history-message small{margin-bottom:5px;font-size:7px;font-weight:850;display:block}.teacher-ai-history-message p{white-space:pre-wrap;margin:0;font-size:9px;line-height:1.65}.teacher-ai-history-message.user{color:#fff;background:#20245d;margin-left:auto}.teacher-ai-history-message.user small{color:#c9c9ec}.teacher-ai-history-message.assistant{color:#302b30;background:#fff;border:1px solid #e6e1dc}.teacher-ai-history-message.assistant small{color:#8d858d}.student-detail-state{text-align:center;background:#fff;border:1px solid #e5e0da;border-radius:20px;flex-direction:column;justify-content:center;align-items:center;gap:8px;min-height:420px;display:flex}.student-detail-state strong{font-size:13px}.student-detail-state small{color:#8f888a;font-size:8px}.student-detail-state.error>svg{color:#c90000;width:38px;height:38px}.student-detail-state button{color:#fff;background:#20245d;border:0;border-radius:9px;align-items:center;gap:6px;padding:9px 12px;font-size:8px;font-weight:850;display:flex}.student-detail-empty{color:#989193;grid-column:1/-1;place-items:center;min-height:130px;font-size:9px;display:grid}@media (width<=1100px){.student-detail-metrics{grid-template-columns:repeat(3,1fr)}.student-detail-overview{grid-template-columns:1fr}.student-detail-wide{grid-column:auto}.student-wrong-summary-grid,.student-exam-grid{grid-template-columns:repeat(2,1fr)}}@media (width<=700px){.student-card-actions{grid-template-columns:1fr}.student-detail-page{padding-left:12px;padding-right:12px}.student-detail-hero{flex-direction:column;align-items:flex-start;padding:20px}.student-detail-identity{align-items:flex-start}.detail-avatar{border-radius:18px;width:58px;height:58px;font-size:21px}.student-detail-identity h1{font-size:24px}.student-detail-hero-note{box-sizing:border-box;width:100%;max-width:none}.student-detail-metrics{padding-bottom:3px;display:flex;overflow-x:auto}.student-detail-metrics article{flex:0 0 165px}.student-detail-tabs{justify-content:flex-start}.student-detail-tabs button{flex:none}.student-detail-panel>header{flex-direction:column;align-items:flex-start}.student-detail-panel>header>p{max-width:none}.student-wrong-summary-grid,.student-exam-grid,.teacher-wrong-grid{grid-template-columns:1fr}.student-unit-table article{grid-template-columns:1fr 50px;padding:13px 0}.student-unit-table article>div,.student-unit-table article>section{grid-column:1/-1}.student-unit-table article>em{text-align:left;grid-column:1}.student-unit-table article>b{text-align:right;grid-area:2/2}.student-unit-mini-list article{grid-template-columns:110px 1fr 35px}.student-detail-table-wrap{margin:0 -1px}.teacher-ai-history-message{max-width:92%}}.exam-pdf-download{box-sizing:border-box;color:#20245d;background:#f7f7ff;border:1px solid #d9d7ea;border-radius:9px;justify-content:center;align-items:center;gap:6px;width:100%;min-height:36px;margin:10px 0 7px;padding:8px 11px;font-size:8px;font-weight:850;text-decoration:none;transition:border-color .18s,background .18s;display:flex}.exam-pdf-download:hover{background:#efefff;border-color:#20245d}.exam-pdf-download svg{width:14px;height:14px}.exam-pdf-download.compact{width:max-content;min-height:28px;margin:7px 0 0;padding:5px 8px;font-size:7px}.exam-answer-upload{background:#fbfbff;border-color:#dddcef;margin-top:13px}.exam-answer-upload .written-upload-heading>span>svg{color:#20245d}.exam-answer-upload>p{color:#696787}@media (width<=700px){.exam-pdf-download.compact{justify-content:center;width:100%}.exam-answer-upload{margin-left:-2px;margin-right:-2px}}