@import "https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@600;700;800&display=swap";
@import "https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&family=Caveat:wght@600;700&family=Noto+Serif+SC:wght@700;900&display=swap";
@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-border-style:solid;--tw-ordinal:initial;--tw-slashed-zero:initial;--tw-numeric-figure:initial;--tw-numeric-spacing:initial;--tw-numeric-fraction:initial;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--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-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4,0,.2,1);--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}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.inline-block{display:inline-block}.table{display:table}.table-cell{display:table-cell}.size-1{width:calc(var(--spacing)*1);height:calc(var(--spacing)*1)}.h-40{height:calc(var(--spacing)*40)}.h-84{height:calc(var(--spacing)*84)}.flex-shrink,.shrink{flex-shrink:1}.grow{flex-grow:1}.transform{transform:var(--tw-rotate-x,)var(--tw-rotate-y,)var(--tw-rotate-z,)var(--tw-skew-x,)var(--tw-skew-y,)}.resize{resize:both}.border{border-style:var(--tw-border-style);border-width:1px}.lowercase{text-transform:lowercase}.uppercase{text-transform:uppercase}.italic{font-style:italic}.ordinal{--tw-ordinal:ordinal;font-variant-numeric:var(--tw-ordinal,)var(--tw-slashed-zero,)var(--tw-numeric-figure,)var(--tw-numeric-spacing,)var(--tw-numeric-fraction,)}.overline{text-decoration-line:overline}.underline{text-decoration-line:underline}.ring{--tw-ring-shadow:var(--tw-ring-inset,)0 0 0 calc(1px + var(--tw-ring-offset-width))var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.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,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}}:root{--navy:#0c1f3f;--navy-2:#132b50;--blue:#3159d8;--blue-dark:#2346b7;--blue-soft:#eef2ff;--red:#d94b4b;--red-soft:#fff1f0;--green:#1c9a6a;--green-soft:#ecf9f4;--purple:#7556c9;--purple-soft:#f3effc;--amber:#b9781e;--amber-soft:#fff6e6;--ink:#17243a;--muted:#69758a;--line:#e4e8ef;--surface:#fff;--canvas:#f7f7f4;--warm:#fbfaf6;--radius:16px;--shadow:0 16px 40px #16274614}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--canvas);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:DM Sans,sans-serif}button,input,select{font:inherit}button{color:inherit}.icon{fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.8px;flex:none}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--navy);font-family:Manrope,sans-serif}button{cursor:pointer}.logo{color:var(--navy);background:0 0;border:0;align-items:center;gap:10px;padding:0;font:800 22px Manrope;display:flex}.logo-mark{background:var(--navy);color:#fff;letter-spacing:-1px;border-radius:10px;place-items:center;width:33px;height:33px;font-size:17px;display:grid}.logo-light{color:#fff}.logo-light .logo-mark{color:var(--navy);background:#fff}.btn{white-space:nowrap;border:1px solid #0000;border-radius:11px;justify-content:center;align-items:center;gap:9px;min-height:44px;padding:0 19px;font-size:14px;font-weight:700;transition:all .2s;display:inline-flex}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--navy);color:#fff;box-shadow:0 6px 14px #0c1f3f26}.btn-primary:hover{background:var(--blue-dark)}.btn-secondary{color:var(--navy);border-color:var(--line);background:#fff}.btn-secondary:hover{border-color:#bdc6d4}.btn-ghost{color:var(--navy);background:0 0}.btn-danger{background:var(--red);color:#fff}.btn.full{width:100%}.progress-track{background:#e9edf3;border-radius:99px;height:7px;overflow:hidden}.progress-track>span{border-radius:inherit;background:var(--blue);height:100%;display:block}.progress-track>span.progress-red{background:var(--red)}.ring{--progress:0deg;background:conic-gradient(var(--blue)var(--progress),#e8edf5 0);border-radius:50%;flex:none;place-items:center;display:grid}.ring:before{content:"";background:#fff;border-radius:50%;position:absolute}.ring>div{z-index:1;text-align:center;flex-direction:column;display:flex;position:relative}.ring strong{color:var(--navy);font:800 18px/1 Manrope}.ring small{color:var(--muted);margin-top:3px;font-size:11.5px}.ring-sm{width:72px;height:72px;position:relative}.ring-sm:before{width:58px;height:58px}.ring-md{width:92px;height:92px;position:relative}.ring-md:before{width:74px;height:74px}.ring-lg{width:126px;height:126px;position:relative}.ring-lg:before{width:102px;height:102px}.ring-lg strong{font-size:26px}.section{max-width:1180px;margin:0 auto;padding-left:28px;padding-right:28px}.eyebrow,.page-eyebrow{color:var(--blue);letter-spacing:.13em;text-transform:uppercase;align-items:center;gap:7px;font-size:11px;font-weight:800;display:inline-flex}.landing{background:var(--warm);min-height:100vh}.landing-nav{justify-content:space-between;align-items:center;max-width:1240px;height:82px;margin:0 auto;padding:0 28px;display:flex}.landing-nav nav{gap:34px;display:flex}.landing-nav nav button{color:#526076;background:0 0;border:0;font-size:14px;font-weight:600}.landing-nav>div{gap:5px;display:flex}.hero{grid-template-columns:.9fr 1.1fr;align-items:center;gap:70px;min-height:650px;padding-top:55px;padding-bottom:90px;display:grid}.hero h1{letter-spacing:-.05em;margin:20px 0 24px;font-size:clamp(48px,5.1vw,73px);line-height:1.05}.hero h1 em{color:var(--blue);font-style:normal}.hero-copy>p{color:var(--muted);max-width:500px;font-size:20px;line-height:1.65}.hero-actions{gap:12px;margin-top:32px;display:flex}.hero-actions .btn{min-height:51px;padding:0 24px}.hero-proof{color:var(--muted);align-items:center;gap:13px;margin-top:34px;font-size:12px;line-height:1.45;display:flex}.hero-proof strong{color:var(--ink);font-size:13px}.avatar-stack{display:flex}.avatar-stack i{border:2px solid var(--warm);background:var(--navy);color:#fff;border-radius:50%;place-items:center;width:29px;height:29px;margin-left:-7px;font-size:11.5px;font-style:normal;display:grid}.avatar-stack i:first-child{background:var(--blue);margin-left:0}.avatar-stack i:last-child{background:var(--red)}.hero-visual{position:relative}.dashboard-preview{background:#fff;border:1px solid #dde3ec;border-radius:20px;height:434px;display:flex;overflow:hidden;transform:perspective(1200px)rotateY(-2deg)rotateX(1deg);box-shadow:0 30px 70px #14284824}.preview-sidebar{background:var(--navy);color:#9cabc0;flex-direction:column;align-items:center;gap:16px;width:62px;padding:17px 13px;display:flex}.preview-sidebar>span:not(.mini-logo){border-radius:8px;place-items:center;width:34px;height:34px;display:grid}.preview-sidebar>span.selected{color:#fff;background:#ffffff1f}.mini-logo{width:29px;height:29px;color:var(--navy);background:#fff;border-radius:8px;place-items:center;margin-bottom:16px;font-weight:800;display:grid}.preview-main{flex:1;min-width:0;padding:24px 25px}.preview-head{justify-content:space-between;align-items:center;display:flex}.preview-head div{flex-direction:column;display:flex}.preview-head small,.preview-feature small{letter-spacing:.08em;color:#8b96a8;font-size:11px;font-weight:700}.preview-head b{color:var(--navy);margin-top:5px;font:700 17px Manrope}.preview-head>span{background:var(--blue-soft);width:31px;height:31px;color:var(--blue);border-radius:50%;place-items:center;font-size:11.5px;font-weight:800;display:grid}.preview-feature{background:linear-gradient(135deg,var(--navy),#1a3f72);color:#fff;border-radius:13px;justify-content:space-between;align-items:center;margin-top:20px;padding:22px;display:flex}.preview-feature>div:first-child{width:75%}.preview-feature b{color:#fff;margin-top:6px;font:700 18px Manrope;display:block}.preview-feature p{color:#b5c6dd;margin:4px 0 13px;font-size:12px}.preview-feature .progress-track{background:#ffffff26;height:5px}.preview-feature .progress-track span{background:#7395ff}.preview-feature .ring:before{background:var(--navy-2)}.preview-feature .ring strong{color:#fff;font-size:13px}.preview-label{justify-content:space-between;margin:19px 0 10px;font-size:11px;display:flex}.preview-label span{color:var(--blue);font-size:11.5px}.preview-stats{grid-template-columns:repeat(3,1fr);gap:9px;display:grid}.preview-stats>div{border:1px solid var(--line);border-radius:10px;grid-template-columns:25px 1fr;padding:10px;display:grid}.preview-stats span{width:22px;height:22px;color:var(--blue);background:var(--blue-soft);border-radius:6px;grid-row:span 2;place-items:center;display:grid}.preview-stats b{color:var(--navy);font-size:12px}.preview-stats small{color:var(--muted);font-size:10px}.preview-bottom{grid-template-columns:1.2fr .8fr;gap:9px;margin-top:10px;display:grid}.preview-bottom>div{border:1px solid var(--line);border-radius:10px;padding:10px;font-size:11.5px}.preview-bottom b{color:var(--navy)}.preview-bottom p{margin:8px 0 2px;font-size:11.5px}.preview-bottom span{color:var(--muted);font-size:10px}.tiny-bars{align-items:flex-end;gap:8px;height:42px;margin-top:8px;display:flex}.tiny-bars i{background:#becbfa;border-radius:3px 3px 0 0;width:8px;display:block}.tiny-bars i:nth-child(6){background:var(--blue)}.float-card{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:12px;align-items:center;gap:10px;padding:11px 14px;display:flex;position:absolute}.float-card>span{background:var(--green-soft);width:30px;height:30px;color:var(--green);border-radius:8px;place-items:center;display:grid}.float-card div{flex-direction:column;display:flex}.float-card small{color:var(--muted);font-size:11px}.float-card b{color:var(--navy);margin-top:2px;font-size:13px}.float-card em{color:var(--green);font-size:11px;font-style:normal}.float-score{bottom:50px;right:-20px}.float-streak{top:55px;left:-25px}.float-streak>span{background:var(--amber-soft);color:var(--amber)}.feature-strip{background:#fff;padding:105px 0}.section-heading{margin-bottom:46px}.section-heading.center{text-align:center;max-width:700px;margin-left:auto;margin-right:auto}.section-heading.row{justify-content:space-between;align-items:end;display:flex}.section-heading h2{letter-spacing:-.035em;margin:12px 0;font-size:38px}.section-heading p{color:var(--muted);font-size:16px;line-height:1.7}.feature-grid{border:1px solid var(--line);border-radius:18px;grid-template-columns:repeat(3,1fr);display:grid;overflow:hidden}.feature-card{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:190px;padding:30px}.feature-card:nth-child(3n){border-right:0}.feature-card:nth-child(n+4){border-bottom:0}.feature-card>span{width:40px;height:40px;color:var(--blue);background:var(--blue-soft);border-radius:10px;place-items:center;display:grid}.feature-card h3{margin:22px 0 7px;font-size:16px}.feature-card p,.subject-card p,.step p,.trust-grid p{color:var(--muted);font-size:13px;line-height:1.6}.subjects-section{padding-top:105px;padding-bottom:115px}.subject-grid{grid-template-columns:repeat(4,1fr);gap:15px;display:grid}.subject-card{text-align:left;border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:24px;transition:all .2s;position:relative}.subject-card:hover{box-shadow:var(--shadow);border-color:#cbd3df;transform:translateY(-4px)}.subject-icon{border-radius:11px;place-items:center;width:43px;height:43px;display:grid}.subject-icon.blue,.metric-icon.blue{background:var(--blue-soft);color:var(--blue)}.subject-icon.purple,.metric-icon.purple{background:var(--purple-soft);color:var(--purple)}.subject-icon.green,.metric-icon.green{background:var(--green-soft);color:var(--green)}.subject-icon.red,.metric-icon.red{background:var(--red-soft);color:var(--red)}.metric-icon.amber{background:var(--amber-soft);color:var(--amber)}.subject-lessons{color:var(--muted);background:var(--canvas);border-radius:20px;padding:5px 8px;font-size:12px;position:absolute;top:24px;right:20px}.subject-card h3{margin:24px 0 8px;font-size:18px}.subject-link{border-top:1px solid var(--line);color:var(--blue);justify-content:space-between;align-items:center;margin-top:20px;padding-top:16px;font-size:12px;font-weight:700;display:flex}.how-section{border-top:1px solid var(--line);grid-template-columns:.8fr 1.2fr;align-items:center;gap:100px;padding-top:105px;padding-bottom:105px;display:grid}.how-copy h2{letter-spacing:-.035em;margin:15px 0;font-size:40px;line-height:1.2}.how-copy p{color:var(--muted);margin-bottom:27px;line-height:1.7}.steps{position:relative}.steps:before{content:"";border-left:1px dashed #cbd3df;position:absolute;top:54px;bottom:54px;left:52px}.step{grid-template-columns:35px 46px 1fr;align-items:start;gap:17px;padding:20px 0;display:grid;position:relative}.step-num{color:var(--blue);margin-top:14px;font-size:12px;font-weight:800}.step-icon{z-index:1;border:1px solid var(--line);width:46px;height:46px;color:var(--blue);background:#fff;border-radius:12px;place-items:center;display:grid}.step h3{margin:2px 0 5px}.step p{margin:0}.progress-showcase{background:var(--navy);padding:100px 0;overflow:hidden}.section-heading.light h2,.section-heading.light p{color:#fff}.section-heading.light p{opacity:.65}.section-heading.light .eyebrow{color:#87a3fa}.analytics-preview{background:#fff;border-radius:18px;max-width:980px;margin:0 auto;padding:30px;box-shadow:0 20px 60px #0003}.analytics-top{grid-template-columns:.3fr .7fr;gap:40px;display:grid}.analytics-top small{color:var(--muted);letter-spacing:.1em;font-size:11.5px;font-weight:800}.big-number{color:var(--navy);margin:10px 0;font:800 52px Manrope}.big-number span{font-size:22px}.analytics-top>div:first-child p{color:var(--muted);font-size:12px}.analytics-top>div:first-child p span{color:var(--green);font-weight:700}.chart-head{justify-content:space-between;font-size:12px;display:flex}.chart-head span{color:var(--muted)}.score-chart svg{width:100%;height:105px;margin-top:10px;overflow:visible}.score-chart .area{fill:#3159d81a}.score-chart .line{fill:none;stroke:var(--blue);stroke-width:3px}.chart-labels{color:var(--muted);justify-content:space-between;font-size:11px;display:flex}.analytics-cards{border-top:1px solid var(--line);grid-template-columns:repeat(4,1fr);gap:10px;margin-top:25px;padding-top:25px;display:grid}.analytics-cards>div{border:1px solid var(--line);border-radius:11px;align-items:center;gap:10px;padding:14px;display:flex}.metric-icon{border-radius:9px;flex:none;place-items:center;width:35px;height:35px;display:grid}.analytics-cards p{color:var(--muted);flex-direction:column;margin:0;font-size:11px;display:flex}.analytics-cards strong{color:var(--navy);margin-top:3px;font-size:13px}.analytics-cards .weak{background:var(--canvas);justify-content:space-between}.analytics-cards .btn{min-height:31px;padding:0 11px;font-size:11.5px}.trust-section{grid-template-columns:.75fr 1.25fr;gap:100px;padding-top:110px;padding-bottom:110px;display:grid}.trust-section>div:first-child h2{letter-spacing:-.04em;margin:15px 0;font-size:39px}.trust-section>div:first-child p{color:var(--muted);line-height:1.7}.trust-grid{grid-template-columns:repeat(2,1fr);gap:36px;display:grid}.trust-grid span{color:var(--blue)}.trust-grid h3{margin:13px 0 6px;font-size:15px}.cta-section{background:var(--blue);color:#fff;text-align:center;padding:95px 28px}.cta-section>div{max-width:660px;margin:0 auto}.cta-section .eyebrow{color:#c3d0ff}.cta-section h2{color:#fff;margin:15px 0;font-size:43px}.cta-section p{color:#d3dcfb;margin-bottom:27px}.cta-section .btn{color:var(--navy);background:#fff}.cta-section small{color:#c3d0ef;margin-top:15px;display:block}.landing footer{background:var(--navy);color:#95a4ba;align-items:center;gap:25px;padding:35px max(28px,50% - 590px);font-size:12px;display:flex}.landing footer p{margin:0}.landing footer>span{margin-left:auto}.app-shell{min-height:100vh;padding-bottom:0}.topbar{border-bottom:1px solid var(--line);z-index:30;background:#fff;height:70px;position:sticky;top:0}.topbar-inner{align-items:center;max-width:1280px;height:100%;margin:auto;padding:0 28px;display:flex}.desktop-nav{align-self:stretch;align-items:center;gap:5px;margin-left:64px;display:flex}.desktop-nav button{color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;height:100%;padding:0 15px;font-size:13px;font-weight:600}.desktop-nav .nav-active{color:var(--navy);border-bottom-color:var(--blue)}.top-actions{align-items:center;gap:12px;margin-left:auto;display:flex}.icon-button,.mobile-menu{border:1px solid var(--line);background:#fff;border-radius:10px;place-items:center;width:38px;height:38px;display:grid}.avatar{background:var(--navy);color:#fff;border:0;border-radius:50%;width:37px;height:37px;font-size:11px;font-weight:800}.mobile-menu,.mobile-drawer,.bottom-nav{display:none}.app-main{max-width:1280px;margin:auto;padding:42px 28px 80px}.page-title{justify-content:space-between;align-items:end;margin-bottom:32px;display:flex}.page-title h1{letter-spacing:-.035em;margin:7px 0 5px;font-size:30px}.page-title p{color:var(--muted);margin:0;font-size:14px}.page-title select,.library-head select{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:10px;padding:10px 34px 10px 13px}.card-kicker{color:var(--muted);letter-spacing:.12em;font-size:11.5px;font-weight:800}.block-head{justify-content:space-between;align-items:end;margin:30px 0 15px;display:flex}.block-head h2{margin:0 0 3px;font-size:18px}.block-head p{color:var(--muted);margin:0;font-size:12px}.block-head>button{color:var(--blue);background:0 0;border:0;align-items:center;gap:6px;font-size:12px;font-weight:700;display:flex}.dashboard-grid{grid-template-columns:minmax(0,1fr) 330px;gap:22px;display:grid}.continue-card{background:linear-gradient(135deg,var(--navy),#183e70);border-radius:var(--radius);color:#fff;grid-template-columns:1.3fr .7fr;min-height:300px;padding:30px;display:grid;overflow:hidden}.continue-card .card-kicker{color:#99add0}.continue-title{align-items:center;gap:14px;margin-top:17px;display:flex}.continue-title .subject-icon{color:#9db5ff;background:#ffffff1f}.continue-title small{color:#9db0cd;letter-spacing:.08em;font-size:11.5px}.continue-title h2{color:#fff;margin:3px 0 0;font-size:23px}.continue-copy>p{color:#b9c6d9;margin:16px 0;font-size:13px;line-height:1.55}.continue-progress{max-width:390px;margin-bottom:19px}.continue-progress>span{color:#c7d3e5;justify-content:space-between;margin-bottom:7px;font-size:12px;display:flex}.continue-progress .progress-track{background:#ffffff21}.continue-progress .progress-track span{background:#7292ff}.continue-progress small{color:#93a7c4;align-items:center;gap:5px;margin-top:7px;font-size:11.5px;display:flex}.continue-card .btn{color:var(--navy);background:#fff;min-height:40px}.function-graphic{background-image:linear-gradient(#ffffff0a 1px,#0000 1px),linear-gradient(90deg,#ffffff0a 1px,#0000 1px);background-size:28px 28px;border:1px solid #ffffff14;border-radius:16px;align-self:center;height:190px;position:relative}.function-graphic svg{width:100%;height:100%}.function-graphic svg path:first-child{stroke:#71839e;stroke-width:1px;fill:none}.function-graphic .curve{stroke:#84a0ff;stroke-width:3px;fill:none}.function-graphic circle{fill:#fff}.function-graphic>span{color:#91a2bb;font-size:11px;position:absolute}.function-graphic>span:first-child{top:8px;left:16px}.function-graphic>span:nth-child(2){bottom:23px;right:7px}.stat-grid{grid-template-columns:repeat(4,1fr);gap:11px;display:grid}.stat-card{border:1px solid var(--line);background:#fff;border-radius:13px;grid-template-columns:36px 1fr;gap:10px;padding:16px;display:grid;position:relative}.stat-card strong{color:var(--navy);font:700 17px Manrope}.stat-card p{color:var(--muted);margin:2px 0 0;font-size:11.5px}.stat-card>small{color:var(--green);font-size:11px;position:absolute;top:13px;right:13px}.dashboard-subjects{grid-template-columns:repeat(3,1fr);gap:11px;display:grid}.dashboard-subjects>button{border:1px solid var(--line);text-align:left;background:#fff;border-radius:13px;padding:17px;position:relative}.mastery{background:var(--green-soft);color:var(--green);border-radius:20px;padding:4px 7px;font-size:11px;font-weight:700;position:absolute;top:17px;right:14px}.dashboard-subjects h3{margin:15px 0;font-size:14px}.subject-progress>span{justify-content:space-between;margin-bottom:7px;display:flex}.subject-progress small{color:var(--muted);font-size:11px}.subject-progress b{font-size:12px}.dashboard-subjects p{color:var(--muted);margin:14px 0 0;font-size:11.5px}.dashboard-subjects p b{color:var(--ink)}.round-arrow{color:var(--blue);position:absolute;bottom:12px;right:14px}.side-column{flex-direction:column;gap:14px;display:flex}.side-card{border:1px solid var(--line);background:#fff;border-radius:14px;padding:21px}.recommended{background:linear-gradient(150deg,#fff 50%,#f1f4ff)}.recommend-icon{background:var(--blue-soft);width:42px;height:42px;color:var(--blue);border-radius:11px;place-items:center;margin-top:20px;display:grid}.side-card h3{margin:13px 0 7px;font-size:16px}.side-card>p{color:var(--muted);font-size:11px;line-height:1.6}.recommend-meta{color:var(--muted);gap:16px;margin:18px 0;font-size:11.5px;display:flex}.recommend-meta span{align-items:center;gap:5px;display:flex}.side-card-head{justify-content:space-between;display:flex}.date-box{background:var(--red-soft);width:40px;height:46px;color:var(--red);border-radius:9px;flex-direction:column;justify-content:center;align-items:center;display:flex}.date-box b{font-size:14px;line-height:1}.date-box small{margin-top:3px;font-size:10px}.mock-score{align-items:center;gap:15px;margin:13px 0;display:flex}.mock-score strong{font-size:12px}.mock-score p{color:var(--muted);margin:3px 0 0;font-size:11.5px}.mini-metrics{background:var(--canvas);border-radius:9px;grid-template-columns:1fr 1fr;margin-bottom:13px;padding:10px;display:grid}.mini-metrics span{border-left:1px solid var(--line);flex-direction:column;padding-left:9px;display:flex}.mini-metrics span:first-child{border:0;padding-left:0}.mini-metrics small{color:var(--muted);font-size:11px}.mini-metrics b{margin-top:3px;font-size:11px}.streak-card{background:var(--navy);color:#fff;border-radius:14px;padding:19px}.streak-card>div:first-child{align-items:center;gap:10px;display:flex}.streak-card>div:first-child>span{color:#ffcb78}.streak-card small{color:#91a3bd;font-size:11px;display:block}.streak-card b{font-size:13px}.week{justify-content:space-between;margin-top:16px;display:flex}.week>span{color:#8294ad;border:1px solid #ffffff24;border-radius:50%;place-items:center;width:26px;height:26px;font-size:11px;display:grid}.week .done{color:#73d5ad;background:#51b98c33;border-color:#0000}.week .today{color:#fff;border-color:#7896ee}.breadcrumbs{color:var(--muted);align-items:center;gap:6px;margin-bottom:24px;font-size:11px;display:flex}.breadcrumbs button{color:var(--muted);background:0 0;border:0;padding:0}.subject-header{border:1px solid var(--line);border-radius:var(--radius);background:#fff;justify-content:space-between;align-items:center;padding:27px;display:flex}.subject-header>div:first-child{align-items:center;gap:18px;display:flex}.subject-icon.large{width:58px;height:58px}.subject-header h1{margin:5px 0 4px;font-size:27px}.subject-header p{color:var(--muted);margin:0;font-size:12px}.subject-overview{align-items:center;gap:25px;display:flex}.subject-overview>span{flex-direction:column;display:flex}.subject-overview small{color:var(--muted);letter-spacing:.1em;font-size:11px}.subject-overview b{margin-top:4px;font-size:11px}.course-layout{grid-template-columns:1fr 285px;gap:22px;display:grid}.tabs{background:#eceff4;border-radius:9px;padding:3px}.tabs button{color:var(--muted);background:0 0;border:0;border-radius:7px;padding:7px 10px;font-size:11.5px}.tabs button.active{color:var(--navy);background:#fff;box-shadow:0 2px 4px #0000000f}.module-card{border:1px solid var(--line);background:#fff;border-radius:14px;margin-bottom:12px;overflow:hidden}.module-head{grid-template-columns:36px 1fr auto;align-items:center;padding:18px 20px;display:grid}.module-head>span{color:var(--blue);font:700 11px Manrope}.module-head h3{margin:0 0 3px;font-size:14px}.module-head p{color:var(--muted);margin:0;font-size:12px}.module-head small{color:var(--muted);font-size:11.5px}.lesson-list{border-top:1px solid var(--line)}.lesson-row{border:0;border-bottom:1px solid var(--line);text-align:left;background:#fff;grid-template-columns:36px 1fr auto 18px;align-items:center;width:100%;padding:13px 20px;display:grid}.lesson-row:last-child{border-bottom:0}.lesson-row.current{background:#f7f9ff}.lesson-status{border:1px solid var(--line);width:24px;height:24px;color:var(--muted);border-radius:50%;place-items:center;font-size:11px;display:grid}.completed .lesson-status{background:var(--green-soft);color:var(--green);border:0}.current .lesson-status{background:var(--blue);color:#fff;border:0}.lesson-row b{font-size:11px}.lesson-row small{color:var(--muted);margin-top:3px;font-size:11px;display:block}.lesson-row em{color:var(--blue);background:var(--blue-soft);border-radius:20px;padding:4px 7px;font-size:10px;font-style:normal;font-weight:800}.lesson-row.locked{opacity:.55}.course-side{flex-direction:column;gap:12px;padding-top:65px;display:flex}.course-percent{justify-content:space-between;align-items:baseline;margin:17px 0 10px;display:flex}.course-percent b{font:700 25px Manrope}.course-percent span{color:var(--muted);font-size:11.5px}.course-side hr{border:0;border-top:1px solid var(--line);margin:18px 0}.course-side .side-card>p{align-items:center;gap:8px;display:flex}.next-action>span{color:var(--blue)}.lesson-page{grid-template-columns:220px minmax(0,690px) 180px;justify-content:center;gap:40px;display:grid}.lesson-sidebar{border-right:1px solid var(--line);padding-right:20px}.back-link{background:0 0;border:0;align-items:center;gap:8px;padding:0;font-weight:700;display:flex}.back-link span{font-size:22px}.lesson-sidebar>p{color:var(--muted);letter-spacing:.1em;margin:34px 0 5px;font-size:11px;font-weight:800}.lesson-sidebar h3{font-size:15px}.lesson-sidebar nav{flex-direction:column;gap:4px;margin-top:18px;display:flex}.lesson-sidebar nav button{text-align:left;color:var(--muted);background:0 0;border:0;border-radius:8px;align-items:center;gap:10px;padding:9px;font-size:12px;display:flex}.lesson-sidebar nav button span{border:1px solid var(--line);border-radius:50%;place-items:center;width:20px;height:20px;font-size:11px;display:grid}.lesson-sidebar nav .completed span{background:var(--green-soft);color:var(--green);border:0}.lesson-sidebar nav .active{background:var(--blue-soft);color:var(--navy);font-weight:700}.lesson-sidebar nav .active span{background:var(--blue);color:#fff;border:0}.lesson-sidebar>div{border-top:1px solid var(--line);margin-top:30px;padding-top:20px;font-size:11.5px}.lesson-sidebar>div small{color:var(--muted);display:block}.lesson-sidebar>div b{margin:5px 0 10px;display:block}.lesson-content{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:42px 50px}.lesson-meta{color:var(--muted);letter-spacing:.08em;justify-content:space-between;font-size:11.5px;font-weight:700;display:flex}.lesson-meta span:last-child{align-items:center;gap:5px;display:flex}.lesson-content>h1{letter-spacing:-.04em;margin:13px 0 12px;font-size:34px}.lesson-lead{color:var(--muted);font-size:16px;line-height:1.7}.objectives{background:var(--blue-soft);border-radius:12px;gap:17px;margin:30px 0 38px;padding:20px;display:flex}.objectives>span{color:var(--blue)}.objectives h3{margin:0 0 9px;font-size:13px}.objectives ul{color:#52617a;margin:0;padding-left:17px;font-size:11px;line-height:1.8}.lesson-content section{position:relative}.section-num{color:var(--blue);font-size:11.5px;font-weight:800}.lesson-content section h2{margin:7px 0 13px;font-size:21px}.lesson-content section>p{color:#526076;font-size:13px;line-height:1.75}.formula-box{text-align:center;background:var(--canvas);border:1px solid var(--line);border-radius:12px;margin:22px 0;padding:25px}.formula-box span{color:var(--navy);font:600 25px Manrope}.formula-box p{color:var(--muted);margin:9px 0 0;font-size:12px}.equation-steps{color:var(--muted);flex-direction:column;align-items:center;gap:7px;margin:22px;font-size:15px;display:flex}.equation-steps strong{color:var(--blue);font-size:18px}.concept-callout{border-left:3px solid var(--red);background:var(--red-soft);gap:15px;margin:35px 0;padding:18px;display:flex}.concept-callout>span{color:var(--red)}.concept-callout h3{margin:0 0 6px;font-size:13px}.concept-callout p{color:#626d7c;margin:0;font-size:11px;line-height:1.6}.term-table{border:1px solid var(--line);border-radius:10px;margin-top:18px;overflow:hidden}.term-table>div{border-bottom:1px solid var(--line);grid-template-columns:1fr 1fr 1fr;padding:13px 17px;font-size:11px;display:grid}.term-table>div:last-child{border:0}.term-table b{font-size:15px}.term-table span{color:var(--blue)}.lesson-actions{border-top:1px solid var(--line);justify-content:space-between;margin-top:40px;padding-top:25px;display:flex}.lesson-outline{padding-top:20px;font-size:12px}.lesson-outline>small{color:var(--muted);font-size:11px;font-weight:800}.lesson-outline>button{border:0;border-left:2px solid var(--line);color:var(--muted);text-align:left;background:0 0;width:100%;padding:8px 12px;font-size:11.5px;display:block}.lesson-outline>button.active{color:var(--blue);border-left-color:var(--blue)}.lesson-outline hr{border:0;border-top:1px solid var(--line);margin:20px 0}.lesson-outline>div{justify-content:space-between;margin-bottom:8px;display:flex}.focus-page,.exam-page{background:var(--canvas);min-height:100vh}.focus-top{border-bottom:1px solid var(--line);background:#fff;grid-template-columns:1fr auto 1fr;align-items:center;height:70px;padding:0 28px;display:grid}.focus-top>div:first-child{align-items:center;gap:13px;display:flex}.focus-top>div:first-child>button{background:0 0;border:0;padding:5px}.focus-top span{flex-direction:column;display:flex}.focus-top small{color:var(--muted);margin-top:2px;font-size:11.5px}.focus-top>div:nth-child(2){gap:5px;font-size:11px;display:flex}.focus-top>div:nth-child(2) span{color:var(--muted)}.focus-top>.btn{justify-self:end}.focus-page>.progress-track{border-radius:0;height:3px}.question-layout{grid-template-columns:minmax(0,700px) 245px;align-items:start;gap:20px;max-width:1020px;margin:44px auto;padding:0 28px;display:grid}.question-card,.question-side{border:1px solid var(--line);border-radius:var(--radius);background:#fff}.question-card{padding:37px}.question-label{color:var(--muted);justify-content:space-between;font-size:11.5px;font-weight:700;display:flex}.question-label span:first-child{color:var(--blue)}.question-card>h1{letter-spacing:-.02em;margin:22px 0 7px;font-size:24px;line-height:1.45}.question-hint{color:var(--muted);font-size:11px}.answers{flex-direction:column;gap:10px;margin-top:24px;display:flex}.answers button,.exam-answers button{border:1px solid var(--line);text-align:left;background:#fff;border-radius:11px;align-items:center;gap:13px;padding:13px;transition:all .15s;display:flex}.answers button:hover,.answers button.selected{border-color:var(--blue);background:#f8f9ff}.answers button>span,.exam-answers button>span{border:1px solid var(--line);border-radius:8px;place-items:center;width:31px;height:31px;font-size:12px;font-weight:700;display:grid}.answers button.selected>span{background:var(--blue);color:#fff;border:0}.answers button.correct{border-color:var(--green);background:var(--green-soft)}.answers button.correct>span{background:var(--green);color:#fff;border:0}.answers button.incorrect{border-color:var(--red);background:var(--red-soft)}.answers button.incorrect>span{background:var(--red);color:#fff;border:0}.answers button b{font-size:12px}.submit-answer{width:100%;margin-top:24px}.question-side{padding:20px}.question-side>div{align-items:center;gap:13px;margin:17px 0;display:flex}.question-side>div p{flex-direction:column;margin:0;font-size:11px;display:flex}.question-side>div span{color:var(--muted);font-size:11.5px}.question-side hr{border:0;border-top:1px solid var(--line)}.question-side>p{color:var(--muted);justify-content:space-between;font-size:12px;display:flex}.question-side>p b{color:var(--ink)}.question-side .green-text{color:var(--green)}.answer-feedback{margin-top:25px}.feedback-title{align-items:center;gap:12px;display:flex}.feedback-title>span{background:var(--green);color:#fff;border-radius:50%;place-items:center;width:38px;height:38px;display:grid}.feedback-title h3{color:var(--green);margin:0 0 3px;font-size:16px}.feedback-title p{color:var(--muted);margin:0;font-size:12px}.explanation{background:var(--green-soft);border-radius:11px;margin:18px 0;padding:19px}.explanation small,.chinese-term small{color:var(--green);letter-spacing:.1em;font-size:11px;font-weight:800}.explanation p{color:#53675f;font-size:11px;line-height:1.6}.explanation div{text-align:center;color:var(--navy);background:#fff;border-radius:8px;padding:13px;font-weight:700}.chinese-term{border:1px solid var(--line);border-radius:11px;gap:13px;margin-bottom:18px;padding:16px;display:flex}.chinese-term>span{color:var(--blue)}.chinese-term div{grid-template-columns:auto 1fr;column-gap:11px;display:grid}.chinese-term small{color:var(--blue);grid-column:span 2}.chinese-term b{margin-top:6px;font-size:17px}.chinese-term em{color:var(--blue);margin-top:9px;font-size:12px}.chinese-term p{color:var(--muted);grid-column:span 2;margin:0;font-size:11.5px}.exam-page{flex-direction:column;height:100vh;display:flex}.exam-header{border-bottom:1px solid var(--line);background:#fff;flex:none;align-items:center;gap:23px;height:74px;padding:0 24px;display:flex}.exam-header>div:nth-child(2){border-left:1px solid var(--line);flex-direction:column;padding-left:23px;display:flex}.exam-header>div:nth-child(2) b{font-size:13px}.exam-header>div:nth-child(2) span{color:var(--muted);font-size:11px}.exam-timer{background:var(--canvas);border-radius:9px;align-items:center;gap:10px;margin-left:auto;padding:9px 14px;display:flex}.exam-timer>span{color:var(--muted);flex-direction:column;font-size:10px;display:flex}.exam-timer b{color:var(--navy);letter-spacing:.05em;font-size:14px}.exam-body{flex:1;grid-template-columns:275px 1fr;min-height:0;display:grid}.exam-nav{border-right:1px solid var(--line);background:#fff;padding:23px;overflow-y:auto}.exam-nav>div:first-child{color:var(--muted);justify-content:space-between;font-size:11px;display:flex}.exam-nav>div:first-child span{font-weight:800}.question-grid{grid-template-columns:repeat(5,1fr);gap:7px;margin:18px 0;display:grid}.question-grid button{border:1px solid var(--line);background:#fff;border-radius:7px;height:35px;font-size:11.5px}.question-grid .answered{background:var(--navy);color:#fff;border-color:var(--navy)}.question-grid .current{background:var(--blue);color:#fff;border:2px solid #9eb2ff}.question-grid .marked{border-color:var(--red);color:var(--red);position:relative}.question-grid .marked:after{content:"";background:var(--red);border-radius:50%;width:4px;height:4px;position:absolute;top:3px;right:3px}.legend{border-top:1px solid var(--line);grid-template-columns:1fr 1fr;gap:10px;padding-top:18px;display:grid}.legend span{color:var(--muted);align-items:center;gap:6px;font-size:11px;display:flex}.legend i{border:1px solid var(--line);border-radius:3px;width:10px;height:10px}.legend i.answered{background:var(--navy)}.legend i.current{background:var(--blue)}.legend i.marked{border-color:var(--red)}.exam-help{background:var(--canvas);color:var(--muted);border-radius:9px;gap:10px;margin-top:25px;padding:13px;display:flex}.exam-help p{flex-direction:column;margin:0;font-size:11.5px;display:flex}.exam-help b{color:var(--ink)}.exam-question{width:100%;max-width:800px;margin:0 auto;padding:60px 50px;overflow-y:auto}.exam-question-meta{color:var(--blue);justify-content:space-between;font-size:11.5px;font-weight:800;display:flex}.exam-question-meta span:last-child{color:var(--muted)}.exam-question h1{margin:22px 0 10px;font-size:24px;line-height:1.55}.exam-question>p{color:var(--muted);font-size:11px}.exam-answers{flex-direction:column;gap:11px;margin-top:28px;display:flex}.exam-answers button{font-size:12px}.exam-answers button:hover{border-color:var(--blue)}.exam-footer{border-top:1px solid var(--line);background:#fff;flex:none;justify-content:flex-end;align-items:center;gap:10px;height:70px;padding:0 25px;display:flex}.exam-footer .btn:first-child{margin-right:auto}.results-hero{text-align:center;border-bottom:1px solid var(--line);padding:25px 0 42px}.result-check{background:var(--green-soft);width:48px;height:48px;color:var(--green);border-radius:50%;place-items:center;margin:0 auto 12px;display:grid}.results-hero h1{letter-spacing:-.05em;margin:7px 0 0;font-size:65px}.results-hero h1 small{color:var(--muted);font-size:24px}.results-hero h2{margin:0 0 5px;font-size:19px}.results-hero p{color:var(--muted);font-size:12px}.results-hero>div{justify-content:center;gap:10px;margin-top:20px;display:flex}.results-content{max-width:990px;margin:25px auto}.result-stats{grid-template-columns:repeat(4,1fr);gap:10px;display:grid}.result-stats>div{border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;gap:10px;padding:15px;display:flex}.result-stats p{color:var(--muted);flex-direction:column;margin:0;font-size:11.5px;display:flex}.result-stats b{color:var(--navy);margin-top:3px;font-size:14px}.results-grid{grid-template-columns:1.1fr .9fr;gap:13px;margin-top:13px;display:grid}.breakdown-card,.score-target{border:1px solid var(--line);background:#fff;border-radius:14px;padding:21px}.breakdown-card .block-head{margin-top:0}.breakdown-row{grid-template-columns:80px 1fr 35px;align-items:center;gap:12px;margin:17px 0;font-size:12px;display:grid}.breakdown-row b{text-align:right}.score-target h2{font-size:17px}.target-bars>div{margin:20px 0}.target-bars span{justify-content:space-between;margin-bottom:7px;font-size:12px;display:flex}.score-target>p{background:var(--green-soft);color:#4f6f61;align-items:center;gap:7px;padding:11px;font-size:11.5px;display:flex}.score-target>p .icon{color:var(--green)}.focus-next{background:var(--navy);color:#fff;border-radius:14px;grid-template-columns:55px 1fr auto;align-items:center;gap:15px;margin-top:13px;padding:21px;display:grid}.focus-next>span{color:#9cb2fa;background:#ffffff14;border-radius:12px;place-items:center;width:48px;height:48px;display:grid}.focus-next small{color:#8fa1bb;font-size:11px}.focus-next h2{color:#fff;margin:4px 0;font-size:16px}.focus-next p{color:#aebed2;margin:0;font-size:12px}.focus-next .btn{color:var(--navy);background:#fff}.analytics-summary{grid-template-columns:1.3fr repeat(3,1fr);gap:12px;display:grid}.mastery-card,.analytics-stat,.large-chart,.activity-card,.topic-mastery,.weak-topics{border:1px solid var(--line);background:#fff;border-radius:14px;padding:20px}.mastery-card{align-items:center;gap:18px;display:flex}.mastery-card small,.analytics-stat small{color:var(--muted);font-size:11px;font-weight:800}.mastery-card h2{margin:6px 0;font-size:16px}.mastery-card p{color:var(--muted);margin:0;font-size:11.5px}.mastery-card p span{color:var(--green);font-weight:700}.analytics-stat{flex-direction:column;align-items:flex-start;display:flex}.analytics-stat small{margin-top:14px}.analytics-stat strong{margin-top:4px;font:700 21px Manrope}.analytics-stat em{color:var(--green);margin-top:auto;font-size:11px;font-style:normal}.analytics-main{grid-template-columns:1fr 310px;gap:12px;margin-top:12px;display:grid}.large-chart .block-head,.activity-card .block-head,.topic-mastery .block-head,.weak-topics .block-head{margin-top:0}.positive{color:var(--green);background:var(--green-soft);border-radius:20px;align-items:center;gap:4px;padding:6px 9px;font-size:11.5px;display:flex}.chart-area{height:265px;margin:20px 10px 0 35px;position:relative}.chart-area svg{width:100%;height:220px;overflow:visible}.gridlines{fill:none;stroke:#e9edf3;stroke-width:1px}.chart-fill{fill:url(#fill)}.chart-line{fill:none;stroke:var(--blue);stroke-width:3px}.chart-area circle{fill:#fff;stroke:var(--blue);stroke-width:3px}.axis{height:200px;color:var(--muted);flex-direction:column;justify-content:space-between;font-size:11px;display:flex;position:absolute;left:-34px}.x-labels{color:var(--muted);justify-content:space-between;font-size:10px;display:flex}.activity-card .block-head>b{font-size:13px}.activity-bars{border-bottom:1px solid var(--line);justify-content:space-around;align-items:end;height:180px;padding-top:20px;display:flex}.activity-bars>div{flex-direction:column;justify-content:end;align-items:center;gap:7px;height:100%;display:flex}.activity-bars>div>span{background:#edf0f5;border-radius:5px;align-items:end;width:13px;height:140px;display:flex;overflow:hidden}.activity-bars i{background:var(--blue);border-radius:5px;width:100%}.activity-bars b{color:var(--muted);font-size:11px}.activity-note{color:var(--amber);align-items:center;gap:10px;margin-top:17px;display:flex}.activity-note p{color:var(--ink);flex-direction:column;margin:0;font-size:12px;display:flex}.activity-note span{color:var(--muted);font-size:11px}.mastery-grid{grid-template-columns:1fr 1fr;gap:12px;margin-top:12px;display:grid}.topic-mastery>div:not(.block-head){grid-template-columns:38px 1fr 35px;align-items:center;gap:12px;margin:15px 0;display:grid}.topic-mastery .subject-icon{width:38px;height:38px}.topic-mastery p{margin:0}.topic-mastery p b{margin-bottom:7px;font-size:12px;display:block}.topic-mastery strong{font-size:11px}.weak-topics>div:not(.block-head){border-top:1px solid var(--line);grid-template-columns:1fr auto 20px;align-items:center;padding:12px 0;display:grid}.weak-topics span{flex-direction:column;display:flex}.weak-topics b{font-size:12px}.weak-topics small,.weak-topics em{color:var(--muted);font-size:11px;font-style:normal}.search-box{border:1px solid var(--line);width:260px;color:var(--muted);background:#fff;border-radius:10px;align-items:center;gap:7px;padding:0 12px;display:flex}.search-box input{background:0 0;border:0;outline:0;width:100%;height:42px;font-size:11px}.material-tabs{border-bottom:1px solid var(--line);margin-bottom:25px;display:flex}.material-tabs button{color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;padding:12px 17px;font-size:11px}.material-tabs button.active{color:var(--blue);border-bottom-color:var(--blue);font-weight:700}.library-layout{grid-template-columns:190px 1fr;gap:28px;display:grid}.library-side>span{color:var(--muted);font-size:11px;font-weight:800}.library-side>div{border-bottom:1px solid var(--line);flex-direction:column;gap:10px;padding:17px 0;display:flex}.library-side b{margin-bottom:3px;font-size:11px}.library-side label{color:var(--muted);cursor:pointer;align-items:center;gap:8px;font-size:12px;display:flex}.library-side input{display:none}.library-side label span{background:#fff;border:1px solid #cdd4df;border-radius:4px;width:15px;height:15px}.library-side input:checked+span{background:var(--blue);border-color:var(--blue);box-shadow:inset 0 0 0 3px #fff}.library-head{justify-content:space-between;align-items:center;margin-bottom:13px;display:flex}.library-head p{color:var(--muted);margin:0;font-size:12px}.resource-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.resource-card{border:1px solid var(--line);background:#fff;border-radius:14px;padding:18px}.resource-card>div:first-child{justify-content:space-between;display:flex}.resource-icon{background:var(--blue-soft);width:42px;height:42px;color:var(--blue);border-radius:10px;place-items:center;display:grid}.resource-type{color:var(--red);background:var(--red-soft);border-radius:4px;height:fit-content;padding:4px 6px;font-size:10px;font-weight:800}.resource-card>.card-kicker{color:var(--blue);margin-top:18px;display:block}.resource-card h3{min-height:37px;margin:7px 0 18px;font-size:13px;line-height:1.4}.resource-meta{color:var(--muted);gap:15px;font-size:11px;display:flex}.resource-meta span{align-items:center;gap:5px;display:flex}.resource-card hr{border:0;border-top:1px solid var(--line);margin:15px 0 7px}.resource-card .btn{justify-content:space-between;width:100%;min-height:35px;padding:0;font-size:12px}.library-cta{background:var(--navy);color:#fff;border-radius:14px;align-items:center;gap:14px;margin-top:15px;padding:20px;display:flex}.library-cta>span{color:#9cb3fc;background:#ffffff1a;border-radius:10px;place-items:center;width:42px;height:42px;display:grid}.library-cta h3{color:#fff;margin:0 0 3px;font-size:13px}.library-cta p{color:#9eafc6;margin:0;font-size:11.5px}.library-cta .btn{color:var(--navy);background:#fff;margin-left:auto}.profile-layout{grid-template-columns:210px minmax(0,750px);gap:25px;display:grid}.profile-nav{flex-direction:column;gap:4px;display:flex}.profile-nav button{text-align:left;color:var(--muted);background:0 0;border:0;border-radius:9px;align-items:center;gap:10px;padding:11px;font-size:11px;display:flex}.profile-nav button.active{color:var(--blue);background:var(--blue-soft);font-weight:700}.profile-main{flex-direction:column;gap:13px;display:flex}.profile-card,.settings-card{border:1px solid var(--line);background:#fff;border-radius:14px;padding:24px}.profile-card{align-items:center;gap:15px;display:flex}.profile-photo{background:var(--navy);color:#fff;border-radius:50%;place-items:center;width:64px;height:64px;font-weight:800;display:grid}.profile-card h2{margin:0 0 4px;font-size:17px}.profile-card p,.profile-card span{color:var(--muted);margin:0;font-size:12px}.profile-card span{font-size:11px}.profile-card .btn{margin-left:auto}.settings-card h2{margin:0 0 4px;font-size:16px}.settings-card>p{color:var(--muted);margin-bottom:20px;font-size:12px}.form-grid{grid-template-columns:1fr 1fr;gap:15px;margin-bottom:20px;display:grid}.form-grid label{font-size:11.5px;font-weight:700}.form-grid input,.form-grid select{border:1px solid var(--line);width:100%;height:40px;color:var(--ink);background:#fff;border-radius:8px;margin-top:6px;padding:0 11px;font-size:12px;display:block}.preference-row{border-top:1px solid var(--line);justify-content:space-between;align-items:center;padding:15px 0;display:flex}.preference-row div{flex-direction:column;display:flex}.preference-row b{font-size:11px}.preference-row span{color:var(--muted);margin-top:3px;font-size:11.5px}.preference-row select{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 25px 8px 10px;font-size:12px}@media (max-width:1024px){.hero{grid-template-columns:.8fr 1.2fr;gap:35px}.float-card{display:none}.subject-grid{grid-template-columns:repeat(2,1fr)}.dashboard-grid{grid-template-columns:1fr}.side-column{grid-template-columns:repeat(3,1fr);display:grid}.course-layout{grid-template-columns:1fr 250px}.lesson-page{grid-template-columns:190px minmax(0,1fr);gap:25px}.lesson-outline{display:none}.analytics-summary{grid-template-columns:repeat(3,1fr)}.mastery-card{grid-column:span 3}.resource-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:760px){.section{padding-left:20px;padding-right:20px}.landing-nav{height:68px;padding:0 20px}.landing-nav nav,.landing-nav .btn-ghost{display:none}.landing-nav .btn{min-height:38px;padding:0 13px;font-size:11px}.hero{min-height:0;padding-top:55px;padding-bottom:70px;display:block}.hero h1{font-size:47px}.hero-copy>p{font-size:17px}.hero-visual{margin-top:55px}.dashboard-preview{height:340px;transform:none}.preview-sidebar{display:none}.preview-main{padding:18px}.preview-feature{padding:16px}.preview-bottom{display:none}.feature-strip,.progress-showcase{padding:75px 0}.section-heading h2{font-size:31px}.feature-grid{grid-template-columns:1fr}.feature-card{border-right:0;min-height:0;padding:23px;border-bottom:1px solid var(--line)!important}.feature-card:last-child{border-bottom:0!important}.subjects-section{padding-top:75px;padding-bottom:75px}.section-heading.row{align-items:start;gap:15px}.section-heading.row .btn{display:none}.subject-grid{grid-template-columns:1fr}.how-section,.trust-section{padding-top:75px;padding-bottom:75px;display:block}.steps,.trust-grid{margin-top:45px}.analytics-top{grid-template-columns:1fr}.analytics-top>div:first-child{align-items:center;gap:12px;display:flex}.big-number{margin:0;font-size:34px}.analytics-cards{grid-template-columns:1fr 1fr}.trust-grid{grid-template-columns:1fr}.cta-section h2{font-size:34px}.landing footer{flex-direction:column;align-items:flex-start}.landing footer>span{margin-left:0}.topbar{height:62px}.desktop-nav,.icon-button{display:none}.topbar-inner{padding:0 18px}.mobile-menu{display:grid}.mobile-drawer{box-shadow:var(--shadow);background:#fff;flex-direction:column;padding:12px 18px 18px;display:flex;position:absolute;top:62px;left:0;right:0}.mobile-drawer button{text-align:left;background:0 0;border:0;align-items:center;gap:10px;padding:12px;display:flex}.bottom-nav{z-index:40;border-top:1px solid var(--line);height:66px;padding-bottom:env(safe-area-inset-bottom);background:#fff;grid-template-columns:repeat(5,1fr);display:grid;position:fixed;bottom:0;left:0;right:0}.bottom-nav button{color:var(--muted);background:0 0;border:0;flex-direction:column;justify-content:center;align-items:center;gap:4px;font-size:11px;display:flex}.bottom-nav button.active{color:var(--blue)}.app-main{padding:27px 17px 90px}.page-title{align-items:start}.page-title h1{font-size:25px}.page-title>.btn,.page-title>select{display:none}.dashboard-grid{display:block}.continue-card{grid-template-columns:1fr;padding:23px}.function-graphic{display:none}.stat-grid{grid-template-columns:1fr 1fr}.dashboard-subjects{grid-template-columns:1fr}.side-column{margin-top:18px;display:flex}.subject-header{padding:20px;display:block}.subject-overview{flex-wrap:wrap;margin-top:22px}.course-layout{display:block}.tabs{display:none}.course-side{padding-top:10px}.lesson-page{display:block}.lesson-sidebar,.lesson-outline{display:none}.lesson-content{border:0;margin:-27px -17px 0;padding:25px 20px}.lesson-content>h1{font-size:28px}.lesson-actions{flex-wrap:wrap;gap:9px}.lesson-actions .btn{flex:1}.focus-top{grid-template-columns:1fr auto;padding:0 14px}.focus-top>div:nth-child(2){display:none}.focus-top>.btn{padding:0 8px;font-size:12px}.question-layout{margin:20px auto;padding:0 14px;display:block}.question-card{padding:24px 18px}.question-card>h1{font-size:20px}.question-side{display:none}.exam-header{gap:10px;height:64px;padding:0 13px}.exam-header .logo span:last-child,.exam-header>div:nth-child(2),.exam-header .btn{display:none}.exam-timer{margin-left:auto}.exam-body{display:block}.exam-nav{display:none}.exam-question{padding:36px 20px}.exam-question h1{font-size:20px}.exam-footer{padding:0 12px}.exam-footer .btn{padding:0 10px;font-size:12px}.results-hero{padding-top:10px}.results-hero h1{font-size:52px}.results-content{margin-top:18px}.result-stats{grid-template-columns:1fr 1fr}.results-grid{grid-template-columns:1fr}.focus-next{grid-template-columns:45px 1fr}.focus-next .btn{grid-column:span 2}.analytics-summary{grid-template-columns:1fr 1fr}.mastery-card,.analytics-stat:last-child{grid-column:span 2}.analytics-main,.mastery-grid{grid-template-columns:1fr}.chart-area{height:230px;overflow:hidden}.x-labels span:nth-child(2n),.search-box{display:none}.material-tabs{overflow-x:auto}.material-tabs button{white-space:nowrap}.library-layout{display:block}.library-side{display:none}.resource-grid{grid-template-columns:1fr}.library-cta{flex-wrap:wrap;align-items:start}.library-cta .btn{margin-left:56px}.profile-layout{display:block}.profile-nav{flex-direction:row;margin-bottom:15px;overflow-x:auto}.profile-nav button{white-space:nowrap}.profile-card{flex-wrap:wrap}.profile-card .btn{margin-left:0}.form-grid{grid-template-columns:1fr}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@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}
a{color:inherit;text-decoration:none}input,select,textarea{color:var(--ink)}.muted{color:var(--muted)}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.btn-sm{min-height:36px;padding:0 13px;font-size:13px}.center-screen{background:var(--canvas);place-items:center;min-height:100vh;display:grid}.spinner{border:3px solid var(--line);border-top-color:var(--blue);border-radius:50%;width:28px;height:28px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.auth-page{background:var(--warm);grid-template-columns:1fr 1fr;min-height:100vh;display:grid}.auth-side{background:linear-gradient(150deg,var(--navy),#183e70);color:#fff;flex-direction:column;justify-content:space-between;padding:48px;display:flex}.auth-side h2{color:#fff;letter-spacing:-.035em;margin:0 0 14px;font-size:36px;line-height:1.15}.auth-side p{color:#b9c6d9;max-width:420px;line-height:1.7}.auth-side ul{flex-direction:column;gap:14px;margin:28px 0 0;padding:0;list-style:none;display:flex}.auth-side li{color:#dbe4f3;align-items:center;gap:12px;font-size:14px;display:flex}.auth-side li>span{color:#9db5ff;background:#ffffff1a;border-radius:9px;place-items:center;width:34px;height:34px;display:grid}.auth-main{place-items:center;padding:40px 24px;display:grid}.auth-card{width:100%;max-width:400px}.auth-card h1{letter-spacing:-.035em;margin:26px 0 6px;font-size:30px}.auth-card>p{color:var(--muted);margin-bottom:26px;font-size:14px}.field{color:var(--ink);flex-direction:column;gap:6px;margin-bottom:14px;font-size:13px;font-weight:700;display:flex}.field input,.field select,.field textarea{border:1px solid var(--line);background:#fff;border-radius:11px;outline:none;height:46px;padding:0 14px;font-size:14px;font-weight:400;transition:border-color .15s}.field input:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.field small{color:var(--muted);font-size:12px;font-weight:400}.divider{color:var(--muted);align-items:center;gap:12px;margin:18px 0;font-size:12px;display:flex}.divider:before,.divider:after{content:"";border-top:1px solid var(--line);flex:1}.btn-google{color:var(--ink);border-color:var(--line);background:#fff}.btn-google:hover{border-color:#bdc6d4}.auth-foot{color:var(--muted);text-align:center;margin-top:22px;font-size:13px}.auth-foot button,.link{color:var(--blue);background:0 0;border:0;padding:0;font-weight:700}.alert{border-radius:11px;margin-bottom:16px;padding:12px 14px;font-size:13px;line-height:1.5}.alert-error{background:var(--red-soft);color:#a33a3a}.alert-ok{background:var(--green-soft);color:#18734f}.alert-info{background:var(--blue-soft);color:var(--blue-dark)}.user-menu{position:relative}.user-menu .avatar{padding:0;overflow:hidden}.user-menu .avatar img{object-fit:cover;width:100%;height:100%}.menu-pop{border:1px solid var(--line);box-shadow:var(--shadow);z-index:50;background:#fff;border-radius:13px;min-width:210px;padding:6px;position:absolute;top:calc(100% + 8px);right:0}.menu-pop header{border-bottom:1px solid var(--line);margin-bottom:4px;padding:10px 12px}.menu-pop header b{font-size:13px;display:block}.menu-pop header span{color:var(--muted);font-size:12px}.menu-pop button{text-align:left;width:100%;color:var(--ink);background:0 0;border:0;border-radius:8px;align-items:center;gap:10px;padding:10px 12px;font-size:13px;display:flex}.menu-pop button:hover{background:var(--canvas)}.menu-pop button.danger{color:var(--red)}.menu-backdrop{z-index:40;position:fixed;inset:0}.math{overflow-wrap:anywhere;white-space:pre-line;line-height:1.7}.math .katex{white-space:normal}.math .katex-display{margin:.6em 0;overflow:auto hidden}.question-text{color:var(--navy);letter-spacing:-.01em;margin:22px 0 8px;font:600 21px/1.6 Manrope,sans-serif}.option-text{color:var(--ink);font-size:14px}.solution{background:var(--green-soft);border-radius:12px;margin-top:18px;padding:18px}.solution small{color:var(--green);letter-spacing:.1em;margin-bottom:8px;font-size:11px;font-weight:800;display:block}.solution .math{color:#3f5a4e;white-space:pre-wrap;font-size:14px}.lang-toggle{background:#eceff4;border-radius:9px;padding:3px;display:inline-flex}.lang-toggle button{color:var(--muted);background:0 0;border:0;border-radius:7px;padding:6px 12px;font-size:12px;font-weight:700}.lang-toggle button.active{color:var(--navy);background:#fff;box-shadow:0 2px 4px #0000000f}.answers button,.exam-answers button{align-items:flex-start;width:100%}.answers button>span,.exam-answers button>span{flex:none}.answers button>.option-text,.exam-answers button>.option-text{text-align:left;border:0;border-radius:0;flex:1;place-items:normal;width:auto;height:auto;padding-top:5px;font-size:14px;font-weight:400;display:block;color:var(--ink)!important;background:0 0!important}.exam-answers button.selected{border-color:var(--blue);background:#f8f9ff}.exam-answers button.selected>span{background:var(--blue);color:#fff;border:0}.answers button:disabled{cursor:default}.answers button.dim{opacity:.5}.exam-timer.warn b{color:var(--amber)}.exam-timer.danger b{color:var(--red)}.exam-mobile-nav,.exam-nav-sheet{display:none}@media (max-width:760px){.exam-mobile-nav{display:inline-flex}.exam-nav-sheet.open{z-index:60;background:#fff;padding:20px;display:block;position:fixed;inset:64px 0 70px;overflow-y:auto}}.modal-backdrop{z-index:100;background:#0c1f3f73;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal{background:#fff;border-radius:18px;width:100%;max-width:420px;padding:28px;box-shadow:0 30px 70px #14284840}.modal h2{margin:0 0 8px;font-size:20px}.modal p{color:var(--muted);font-size:14px;line-height:1.6}.modal .row{gap:10px;margin-top:22px;display:flex}.modal .row .btn{flex:1}.toast{background:var(--navy);color:#fff;z-index:200;box-shadow:var(--shadow);border-radius:11px;padding:11px 18px;font-size:13px;position:fixed;bottom:90px;left:50%;transform:translate(-50%)}.card{border:1px solid var(--line);background:#fff;border-radius:14px;padding:22px}.card h2{margin:0 0 4px;font-size:17px}.card>p{color:var(--muted);font-size:13px}.empty{text-align:center;color:var(--muted);padding:50px 20px}.empty .metric-icon{width:48px;height:48px;margin:0 auto 14px}.empty h3{margin:0 0 6px}.empty p{max-width:380px;margin:0 auto 20px;font-size:14px;line-height:1.6}.pill{border-radius:20px;align-items:center;gap:5px;padding:4px 9px;font-size:11px;font-weight:700;display:inline-flex}.pill-green{background:var(--green-soft);color:var(--green)}.pill-red{background:var(--red-soft);color:var(--red)}.pill-blue{background:var(--blue-soft);color:var(--blue)}.pill-muted{background:var(--canvas);color:var(--muted)}.sim-list{flex-direction:column;gap:10px;display:flex}.sim-row{border:1px solid var(--line);text-align:left;background:#fff;border-radius:13px;grid-template-columns:64px 1fr auto 18px;align-items:center;gap:16px;width:100%;padding:16px 18px;transition:all .15s;display:grid}.sim-row:hover{box-shadow:var(--shadow);border-color:#cbd3df}.sim-row .score{color:var(--navy);font:800 24px Manrope}.sim-row .score small{color:var(--muted);font-size:12px}.sim-row b{font-size:14px;display:block}.sim-row span{color:var(--muted);font-size:12px}.choice-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.choice{border:1px solid var(--line);text-align:left;background:#fff;border-radius:14px;padding:20px;transition:all .15s;position:relative}.choice:hover:not(:disabled){border-color:#cbd3df}.choice.selected{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.choice:disabled{opacity:.55;cursor:not-allowed}.choice h3{margin:16px 0 4px;font-size:16px}.choice p{color:var(--muted);margin:0;font-size:12px}.choice .check{background:var(--blue);color:#fff;border-radius:50%;place-items:center;width:22px;height:22px;display:grid;position:absolute;top:14px;right:14px}.choice-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.problem-list{grid-template-columns:repeat(3,1fr);gap:15px;display:grid}.problem-list>div{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:26px}.problem-list b{color:var(--navy);margin:16px 0 8px;font:700 16px Manrope;display:block}.problem-list p{color:var(--muted);margin:0;font-size:14px;line-height:1.6}.pricing-grid{grid-template-columns:repeat(2,minmax(0,380px));justify-content:center;gap:18px;display:grid}.price-card{border:1px solid var(--line);background:#fff;border-radius:18px;flex-direction:column;padding:30px;display:flex}.price-card.featured{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft),var(--shadow)}.price-card h3{margin:0;font-size:18px}.price-card .price{color:var(--navy);margin:14px 0 4px;font:800 38px Manrope}.price-card .price small{color:var(--muted);font-size:14px;font-weight:600}.price-card ul{flex-direction:column;flex:1;gap:11px;margin:22px 0 26px;padding:0;list-style:none;display:flex}.price-card li{align-items:center;gap:10px;font-size:14px;display:flex}.price-card li.off{color:var(--muted);text-decoration:line-through}.price-card li .icon{color:var(--green)}.price-card li.off .icon{color:#c2cad6}.prose{max-width:760px}.prose h2{margin:34px 0 10px;font-size:20px}.prose p,.prose li{color:#4a5870;font-size:15px;line-height:1.75}.prose ul{padding-left:20px}@media (max-width:1024px){.problem-list{grid-template-columns:1fr}}@media (max-width:760px){.auth-page{grid-template-columns:1fr}.auth-side{display:none}.choice-grid,.choice-row,.pricing-grid{grid-template-columns:1fr}.sim-row{grid-template-columns:54px 1fr 18px}.sim-row>:nth-child(3){display:none}.question-text{font-size:18px}}
.exam{--paper:#fbfaf4;--grid:#e4e8ef;--ink:#1b2233;--muted:#5a6274;--pen:#d7261e;--hl:#fff27a;--ok:#13804b;--sans:"IBM Plex Sans",system-ui,sans-serif;--mono:"IBM Plex Mono",ui-monospace,monospace;--hand:"Caveat","Comic Sans MS",cursive;--zh:"Noto Serif SC","Songti SC","SimSun",serif;min-height:100vh;color:var(--ink);font:16px/1.6 var(--sans);background-color:var(--paper);background-image:linear-gradient(var(--grid)1px,transparent 1px),linear-gradient(90deg,var(--grid)1px,transparent 1px);background-size:24px 24px}.exam a{color:inherit;text-decoration:none}.exam h1,.exam h2,.exam h3{font-family:var(--sans);color:var(--ink)}.exam .sheet{max-width:1040px;margin:0 auto;padding:0 24px 80px}.exam a:focus-visible{outline:2px solid var(--pen);outline-offset:3px}.exam .hand-note{font:700 26px/1.1 var(--hand);color:var(--pen)}.exam .zh-inline{font-family:var(--zh)}.exam-head{z-index:20;border:2px solid var(--ink);background:var(--paper);align-items:stretch;margin-top:28px;display:flex;position:sticky;top:0}.exam-head>*{padding:12px 16px}.exam-logo{border-right:2px solid var(--ink);font:700 20px var(--sans);align-items:center;gap:10px;display:flex}.exam-logo b{font:900 26px var(--zh)}.exam-meta{font:500 13px var(--mono);color:var(--muted);flex-wrap:wrap;flex:1;align-items:center;gap:4px 24px;display:flex}.exam-meta b{color:var(--ink)}.exam-login{border-left:2px solid var(--ink);font:600 14px var(--sans);place-items:center;display:grid}.exam-login:hover{background:var(--hl)}.exam-go{border-left:2px solid var(--ink);font:700 14px var(--sans);background:var(--ink);white-space:nowrap;place-items:center;display:grid;color:var(--paper)!important}.exam-go:hover{background:var(--pen)}.exam-hero{padding:70px 0 40px;position:relative}.exam-q{font:600 13px var(--mono);color:var(--muted);letter-spacing:.04em}.exam-hero h1{font:700 clamp(40px,6.4vw,78px)/1.02 var(--sans);letter-spacing:-.035em;max-width:13ch;margin:10px 0 18px}.exam-hero h1 mark{background:linear-gradient(transparent 55%,var(--hl)55%,var(--hl)92%,transparent 92%);color:inherit;padding:0 .06em}.exam-hero .circled{display:inline-block;position:relative}.exam-hero .circled:after{content:"";border:3px solid var(--pen);border-radius:50% 46% 52% 48%/55% 50% 50% 45%;position:absolute;inset:-.08em -.18em -.04em -.2em;transform:rotate(-3deg)}.exam-lead{color:var(--muted);max-width:52ch;font-size:19px}.hero-note{text-align:center;max-width:220px;position:absolute;top:90px;right:0;transform:rotate(6deg)}.hero-note:before{content:"↙";font-size:34px;display:block}.choices{gap:10px;max-width:540px;margin:28px 0 0;padding:0;list-style:none;display:grid}.choices a{background:var(--paper);border:1.5px solid var(--ink);align-items:center;gap:14px;padding:12px 16px;font-weight:600;transition:transform .15s;display:flex}.choices a:hover{transform:translate(4px)}.choices .opt{border:1.5px solid var(--ink);width:30px;height:30px;font:600 13px var(--mono);border-radius:50%;flex:none;place-items:center;display:grid}.choices .right a{border-width:2.5px}.choices .right .opt{background:var(--ink);color:var(--paper)}.choices .tick{font:700 28px var(--hand);color:var(--pen);white-space:nowrap;margin-left:auto}.stamp{border:4px double var(--pen);text-align:center;width:150px;height:150px;color:var(--pen);font:900 15px/1.1 var(--zh);opacity:.85;pointer-events:none;border-radius:50%;place-items:center;display:grid;position:absolute;bottom:10px;right:30px;transform:rotate(-14deg)}.stamp big{font-size:44px;display:block}.exam section{margin-top:70px;scroll-margin-top:90px}.exam .sec-head{border-bottom:2px solid var(--ink);flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin-bottom:24px;padding-bottom:8px;display:flex}.exam .sec-head .no{font:600 14px var(--mono)}.exam .sec-head h2{font:700 30px var(--sans);letter-spacing:-.02em;margin:0}.exam .sec-head .pts{font:500 13px var(--mono);color:var(--muted);margin-left:auto}.exam .sec-intro{color:var(--muted);max-width:68ch;margin:0 0 22px}.exam .problems{border:1.5px solid var(--ink);background:var(--paper);grid-template-columns:repeat(3,1fr);display:grid}.exam .problems>div{border-right:1.5px solid var(--ink);padding:22px;position:relative}.exam .problems>div:last-child{border-right:0}.exam .problems s{-webkit-text-decoration-color:var(--pen);text-decoration-color:var(--pen);text-decoration-thickness:3px}.exam .problems h3{margin:0 0 6px;padding-right:24px;font-size:18px}.exam .problems p{color:var(--muted);margin:0;font-size:14.5px}.exam .problems .x{font:700 30px var(--hand);color:var(--pen);position:absolute;top:12px;right:16px}.exam .qs{background:var(--paper);border:1.5px solid var(--ink);margin:0;padding:0}.exam .qs li{border-bottom:1px dashed #b8bfcc;grid-template-columns:70px 1fr auto;align-items:start;gap:16px;padding:20px;list-style:none;display:grid}.exam .qs li:last-child{border-bottom:0}.exam .qs .n{font:600 28px var(--mono)}.exam .qs h3{margin:0 0 4px;font-size:18px}.exam .qs p{color:var(--muted);margin:0;font-size:14.5px}.exam .qs .mark{font:700 26px var(--hand);color:var(--pen);white-space:nowrap}.exam .steps{grid-template-columns:repeat(3,1fr);gap:30px;display:grid}.exam .steps>div{background:var(--paper);border:1.5px solid var(--ink);padding:20px;position:relative}.exam .steps b{font:700 18px var(--sans)}.exam .steps p{color:var(--muted);margin:6px 0 0;font-size:14.5px}.exam .steps>div+div:before{content:"→";font:700 30px var(--hand);color:var(--pen);position:absolute;top:50%;left:-15px;transform:translate(-50%,-50%)}.exam .subjects{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.exam .subj{background:var(--paper);border:1.5px solid var(--ink);padding:20px;position:relative}.exam .subj .zh{font:900 54px/1 var(--zh)}.exam .subj h3{margin:12px 0 4px;font-size:18px}.exam .subj p{color:var(--muted);margin:0;font-size:14px}.exam .subj.soon{border-style:dashed}.exam .subj.soon .zh{color:#c3c8d3}.exam .subj .tag{font:600 12px var(--mono);color:var(--muted);border:1.5px solid;padding:2px 8px;position:absolute;top:14px;right:14px}.exam .subj:not(.soon) .tag{color:var(--ok)}.exam .score{grid-template-columns:repeat(2,1fr);gap:20px;display:grid}.exam .card{box-shadow:none;background:var(--paper);border:1.5px solid var(--ink);border-radius:0;flex-direction:column;padding:26px;display:flex;position:relative}.exam .card.main{box-shadow:8px 8px 0 var(--ink);border-width:3px}.exam .card h3{font:600 14px var(--mono);text-transform:uppercase;letter-spacing:.08em;margin:0}.exam .card .amt{font:700 48px var(--sans);letter-spacing:-.03em;margin:8px 0 12px}.exam .card .amt small{font:500 14px var(--mono);color:var(--muted);letter-spacing:0}.exam .card ul{flex:1;align-content:start;gap:6px;margin:0 0 20px;padding:0;list-style:none;display:grid}.exam .card li:before{content:"✓";font:700 20px var(--hand);color:var(--pen);margin-right:10px}.exam .card-note{background:var(--paper);padding:0 6px;position:absolute;top:-18px;right:18px;transform:rotate(4deg)}.exam-btn{background:var(--ink);border:2px solid var(--ink);align-self:flex-start;align-items:center;gap:8px;padding:14px 22px;font-weight:700;transition:background .15s,border-color .15s;display:inline-flex;color:var(--paper)!important}.exam-btn:hover{background:var(--pen);border-color:var(--pen)}.exam-btn.off{background:0 0;border-style:dashed;color:var(--muted)!important}.exam-btn.off:hover{border-color:var(--ink);background:0 0}.exam .final{text-align:center;border-top:2px solid var(--ink);justify-items:center;gap:8px;margin-top:80px;padding-top:50px;display:grid}.exam .final h2{font:700 clamp(34px,5vw,56px)/1.1 var(--sans);letter-spacing:-.03em;margin:0}.exam .final .hand-note{margin-bottom:14px}.exam .final .exam-btn{align-self:center}.exam-foot{font:500 13px var(--mono);color:var(--muted);border-top:1.5px solid var(--ink);flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:60px;padding-top:14px;display:flex}.exam-foot a{text-decoration:underline!important}@media (prefers-reduced-motion:reduce){.choices a{transition:none}}@media (max-width:760px){.exam .sheet{padding:0 16px 60px}.exam-head{margin-top:12px}.exam-meta{display:none}.exam-logo{border-right:0;flex:1}.exam-hero{padding-top:44px}.hero-note,.stamp{margin-top:22px;position:static}.hero-note{transform:rotate(-3deg)}.hero-note:before{content:none}.stamp{width:120px;height:120px}.choices .tick{font-size:22px}.exam .problems,.exam .subjects,.exam .score,.exam .steps{grid-template-columns:1fr}.exam .problems>div{border-right:0;border-bottom:1.5px solid var(--ink)}.exam .problems>div:last-child{border-bottom:0}.exam .steps>div+div:before{content:"↓";top:-15px;left:50%}.exam .qs li{grid-template-columns:44px 1fr;padding:16px}.exam .qs .n{font-size:22px}.exam .qs .mark{grid-column:2}.exam .sec-head h2{font-size:24px}.exam .sec-head .pts{margin-left:0}}
:root{--exam-paper:#fbfaf4;--exam-grid:#e4e8ef;--exam-ink:#1b2233;--exam-pen:#d7261e;--exam-hl:#fff27a;--exam-sans:"IBM Plex Sans",system-ui,sans-serif;--exam-mono:"IBM Plex Mono",ui-monospace,monospace;--exam-hand:"Caveat","Comic Sans MS",cursive;--exam-zh:"Noto Serif SC","Songti SC","SimSun",serif;--navy:#1b2233;--navy-2:#2a3347;--blue:#d7261e;--blue-dark:#b51f18;--blue-soft:#fdeceb;--red:#c81e1e;--red-soft:#fdecec;--green:#13804b;--green-soft:#e8f6ee;--purple:#1b2233;--purple-soft:transparent;--amber:#a15c00;--amber-soft:#fff7c2;--ink:#1b2233;--muted:#5a6274;--line:#c9cfdb;--surface:#fbfaf4;--canvas:#fbfaf4;--warm:#fbfaf4;--radius:0px;--shadow:4px 4px 0 #1b2233}body{font-family:var(--exam-sans);background-color:var(--exam-paper);background-image:linear-gradient(var(--exam-grid)1px,transparent 1px),linear-gradient(90deg,var(--exam-grid)1px,transparent 1px);background-size:24px 24px}h1,h2,h3,.logo,.ring strong,.big-number{letter-spacing:-.02em;font-family:var(--exam-sans)!important}h1,h2,h3,.logo{font-weight:700}.eyebrow,.page-eyebrow,.card-kicker{font-family:var(--exam-mono);letter-spacing:.06em;color:var(--muted);font-weight:600}.logo-mark{font:900 26px var(--exam-zh);width:auto;color:var(--exam-ink)!important;background:0 0!important}.logo-light .logo-mark{color:var(--exam-paper)!important}.btn{font-family:var(--exam-sans);border-radius:0}.btn:hover{transform:none}.btn-primary{background:var(--exam-ink);color:var(--exam-paper);box-shadow:none;border:2px solid var(--exam-ink)}.btn-primary:hover{background:var(--exam-pen);border-color:var(--exam-pen)}.btn-secondary{background:var(--exam-paper);color:var(--exam-ink);border:1.5px solid var(--exam-ink)}.btn-secondary:hover{background:var(--exam-hl);border-color:var(--exam-ink)}.btn-ghost:hover{background:var(--exam-hl)}.btn:disabled,.btn[disabled]{opacity:.5}.btn:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--exam-pen);outline-offset:2px}.card,.continue-card,.recommended,.subject-card,.dashboard-subjects>button,.subject-header,.analytics-preview,.analytics-cards>div,.preview-stats>div,.preview-bottom>div,.problem-list>div,.price-card,.library-cta,.auth-card,.stat-card,.history-row,.question-card,.result-card{background-color:var(--exam-paper);box-shadow:none;border:1.5px solid var(--exam-ink)!important;border-radius:0!important}.continue-card,.preview-feature,.auth-side,.library-cta,.streak-card,.cta-section{color:var(--exam-paper);background:var(--exam-ink)!important;background-image:none!important}.continue-card .card-kicker,.continue-title small{color:#b8bfcc}.continue-title .subject-icon{color:var(--exam-hl)!important;background:0 0!important}.recommended{background-image:none!important}.metric-icon,.subject-icon,.recommend-icon,.resource-icon,.preview-stats span,.float-card>span,.feature-card>span,.library-cta>span{background:0 0!important;border-radius:0!important;width:auto!important;height:auto!important}.metric-icon,.recommend-icon{color:var(--exam-ink)!important}.topbar{background:var(--exam-paper);border-bottom:2px solid var(--exam-ink)}.desktop-nav button{font-family:var(--exam-sans);color:var(--muted)}.desktop-nav .nav-active{color:var(--exam-ink);border-bottom:3px solid var(--exam-pen)}.avatar{background:var(--exam-ink);font-family:var(--exam-mono);border-radius:0}.icon-button,.mobile-menu{border:1.5px solid var(--exam-ink);background:var(--exam-paper);border-radius:0}.bottom-nav{background:var(--exam-paper);border-top:2px solid var(--exam-ink)}.mobile-drawer{background:var(--exam-paper);border-bottom:2px solid var(--exam-ink);box-shadow:none}.progress-track{border:1.5px solid var(--exam-ink);background:0 0;border-radius:0;height:10px}.progress-track>span{background:var(--exam-ink);border-radius:0}.continue-card .progress-track{border-color:var(--exam-paper)}.continue-card .progress-track>span{background:var(--exam-hl)}.ring{background:conic-gradient(var(--exam-pen)var(--progress),#e3e5ea 0)}.ring:before{background:var(--exam-paper)}.pill-green,.pill-red,.pill-blue{font-family:var(--exam-mono);background:0 0;border:1.5px solid;border-radius:0;font-weight:600}input,select,textarea{border-radius:0!important}.auth-card input,.form-grid input,.form-grid select,.page-title select,.library-head select{border:1.5px solid var(--exam-ink)!important;background:var(--exam-paper)!important}.alert-error,.alert-ok,.alert-info{border:1.5px solid;border-radius:0}.answers button,.choice,.choice-grid>button,.choice-row>button,.option{background:var(--exam-paper);border:1.5px solid var(--exam-ink)!important;border-radius:0!important}.answers button.correct{background:var(--green-soft)!important;border-color:var(--green)!important}.answers button.incorrect{background:var(--red-soft)!important;border-color:var(--exam-pen)!important}.explanation,.solution{border-left:4px solid var(--exam-pen);background:#fffdf0;border-radius:0}.auth-page{background:0 0}.auth-side h2{color:var(--exam-paper)}.auth-side p{color:#c3c8d3}.auth-points{gap:10px;margin:26px 0 0;padding:0;list-style:none;display:grid}.auth-points li{color:var(--exam-paper);align-items:baseline;gap:12px;font-weight:500;display:flex}.auth-points li:before{content:"✓";font:700 24px/1 var(--exam-hand);color:var(--exam-hl)}.auth-side .exam-tag{font:600 12px var(--exam-mono);letter-spacing:.06em;color:var(--exam-hl)}.auth-stamp{border:4px double var(--exam-hl);text-align:center;width:120px;height:120px;color:var(--exam-hl);font:900 13px/1.1 var(--exam-zh);opacity:.9;border-radius:50%;place-items:center;display:grid;transform:rotate(-12deg)}.auth-stamp big{font-size:36px;display:block}.auth-card{padding:30px;box-shadow:8px 8px 0 var(--exam-ink)!important;border-width:2.5px!important}.auth-card h1{margin-top:18px}.btn-google{border:1.5px solid var(--exam-ink);background:var(--exam-paper);border-radius:0}.logo-mark,.btn,.dashboard-preview,.preview-sidebar>span:not(.mini-logo),.mini-logo,.preview-feature,.preview-stats>div,.preview-stats span,.preview-bottom>div,.float-card,.float-card>span,.feature-grid,.feature-card>span,.subject-card,.subject-icon,.subject-lessons,.step-icon,.analytics-preview,.analytics-cards>div,.metric-icon,.icon-button,.mobile-menu,.page-title select,.library-head select,.continue-card,.function-graphic,.stat-card,.dashboard-subjects>button,.mastery,.side-card,.recommend-icon,.date-box,.mini-metrics,.streak-card,.subject-header,.tabs,.tabs button,.module-card,.lesson-row em,.lesson-sidebar nav button,.lesson-content,.objectives,.formula-box,.term-table,.focus-page>.progress-track,.question-card,.question-side,.answers button,.exam-answers button,.answers button>span,.exam-answers button>span,.explanation,.explanation div,.chinese-term,.exam-timer,.question-grid button,.legend i,.exam-help,.result-stats>div,.breakdown-card,.score-target,.focus-next,.focus-next>span,.mastery-card,.analytics-stat,.large-chart,.activity-card,.topic-mastery,.weak-topics,.positive,.activity-bars>div>span,.activity-bars i,.search-box,.library-side label span,.resource-card,.resource-icon,.resource-type,.library-cta,.library-cta>span,.profile-nav button,.profile-card,.settings-card,.form-grid input,.form-grid select,.preference-row select,.auth-side li>span,.field input,.field select,.field textarea,.alert,.menu-pop,.menu-pop button,.solution,.lang-toggle,.lang-toggle button,.answers button>.option-text,.exam-answers button>.option-text,.modal,.toast,.card,.pill,.sim-row,.choice,.problem-list>div,.price-card{border-radius:0!important}.subject-icon,.metric-icon,.recommend-icon{justify-self:start;width:max-content!important}.function-graphic{border-color:#fbfaf440}.function-graphic .curve{stroke:var(--exam-hl)}.function-graphic svg path:first-child{stroke:#8d95a8}.streak-card small{color:#b8bfcc;font-family:var(--exam-mono)}.streak-card>div:first-child>span{color:var(--exam-hl)}.week>span{font-family:var(--exam-mono);color:#b8bfcc;border-color:#fbfaf44d;border-radius:0}.week .done{background:var(--exam-hl);color:var(--exam-ink);border-color:var(--exam-hl)}.week .today{border-color:var(--exam-paper);color:var(--exam-paper)}.settings-card,.profile-card,.side-card,.mastery-card,.mock-summary,.results-content,.question-grid,.sim-row,.weak-topics,.topic-mastery,.empty,.modal,.score-target,.lang-toggle{background-color:var(--exam-paper);border:1.5px solid var(--exam-ink)!important;box-shadow:none!important;border-radius:0!important}.modal{box-shadow:8px 8px 0 var(--exam-ink)!important}.profile-nav button{border-radius:0!important}.profile-nav button.active{background:var(--exam-hl)!important;color:var(--exam-ink)!important}.profile-photo,.profile-card .avatar{border-radius:0!important}.pill,.pill-muted{font-family:var(--exam-mono);border-radius:0!important}.toast{border:1.5px solid var(--exam-ink);box-shadow:4px 4px 0 var(--exam-ink);border-radius:0!important}.question-text{font-family:var(--exam-sans)}.marked{outline:2px solid var(--exam-pen)}.exam-answers button{background:var(--exam-paper);border:1.5px solid var(--exam-ink)!important;border-radius:0!important}.exam-answers button:hover{background:#fffbe0}.exam-answers button.selected{box-shadow:4px 4px 0 var(--exam-ink);background:var(--exam-hl)!important}.exam-timer{border:1.5px solid var(--exam-ink);background:var(--exam-paper);font-family:var(--exam-mono)}.exam-timer b{font-family:var(--exam-mono)}.focus-next>span{color:var(--exam-hl)!important;background:0 0!important;width:auto!important}.focus-next small{color:var(--exam-hl);font-family:var(--exam-mono)}.focus-next .btn{background:var(--exam-pen);color:var(--exam-paper);border-color:var(--exam-pen)}.focus-next .btn:hover{background:var(--exam-paper);color:var(--exam-ink);border-color:var(--exam-paper)}
/*# sourceMappingURL=9d77286ef2a4540a.css.map*/