@import "https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@500;600;700;800&display=swap";@layer components;@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:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--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,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-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:where(:not(iframe)){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 utilities{.visible{visibility:visible}.fixed{position:fixed}.static{position:static}.contents{display:contents}.grid{display:grid}.hidden{display:none}.table{display:table}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.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{color:#f1f6ff;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;background:#07101d;font-family:DM Sans,Segoe UI,sans-serif;font-size:16px;line-height:1.6}*{box-sizing:border-box}html{scroll-behavior:smooth;background:#07101d}body{min-width:320px;min-height:100vh;margin:0}button,input,select{font:inherit}button,select{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline-offset:3px;outline:2px solid #2dd4bf}::selection{color:#06121b;background:#2dd4bf}@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}:root{--panel:#101b2b;--line:#2a3d57;--muted:#afbdd0;--teal:#40e0ca;--violet:#b9a6ff}.app-shell{background:radial-gradient(circle at 80% 5%,#2dd4bf12,#0000 27%),#07101d;min-height:100vh}.sidebar{border-right:1px solid var(--line);z-index:20;background:#09121ff7;flex-direction:column;width:250px;padding:22px 16px;display:flex;position:fixed;inset:0 auto 0 0}.brand{align-items:center;gap:11px;padding:0 7px 24px;display:flex}.brand>div{color:#06201f;background:var(--teal);border-radius:12px;place-items:center;width:40px;height:40px;display:grid;box-shadow:0 0 28px #2dd4bf33}.brand>span{flex-direction:column;display:flex}.brand strong{letter-spacing:-.5px;font:800 19px Manrope}.brand strong span{color:var(--teal)}.brand small{color:#6f8097;letter-spacing:1.3px;text-transform:uppercase;font-size:10px}.brand>button{color:#fff;background:0 0;border:0;margin-left:auto;display:none}.sidebar nav{flex-direction:column;gap:5px;display:flex}.sidebar nav p{color:#53637a;letter-spacing:1.5px;margin:20px 11px 7px;font-size:10px;font-weight:700}.sidebar nav button{color:#8493a8;text-align:left;background:0 0;border:0;border-radius:10px;align-items:center;gap:12px;height:43px;padding:0 12px;transition:all .2s;display:flex}.sidebar nav button:hover{color:#dce7f5;background:#111e30}.sidebar nav button.active{color:#dffdfa;box-shadow:inset 3px 0 var(--teal);background:#2dd4bf1a}.sidebar nav .paper-nav i{border-radius:50%;width:7px;height:7px}.sidebar nav .paper-nav small{color:#526178;margin-left:auto}.sidebar nav .paper-nav.selected{color:#dfe8f5;background:#111d2d}.sidebar-note{color:var(--teal);background:#2dd4bf0f;border:1px solid #2dd4bf21;border-radius:12px;gap:10px;margin-top:auto;padding:13px;display:flex}.sidebar-note p{flex-direction:column;margin:0;display:flex}.sidebar-note strong{color:#bddbd9;font-size:12px}.sidebar-note span{color:#6f8398;margin-top:3px;font-size:10px;line-height:1.4}.loading-panel{min-height:300px;color:var(--muted);place-items:center;display:grid}main{min-height:100vh;margin-left:250px}.topbar{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:10;background:#07101dd1;align-items:center;height:74px;padding:0 clamp(22px,4vw,54px);display:flex;position:sticky;top:0}.topbar>div{flex-direction:column;display:flex}.topbar>div strong{margin-top:2px;font:700 14px Manrope}.mobile-menu{color:#fff;background:0 0;border:0;display:none}.subject-select{align-items:center;gap:11px;margin-left:auto;display:flex}.subject-select select{color:#dfe7f2;border:1px solid var(--line);background:var(--panel);border-radius:9px;padding:9px 30px 9px 11px}.content{max-width:1260px;margin:auto;padding:38px clamp(22px,4vw,54px) 70px}.dashboard-stack{gap:34px;display:grid}.hero-panel{background:radial-gradient(circle at 82%,#2dd4bf24,#0000 20%),linear-gradient(130deg,#122238,#0b1727 65%);border:1px solid #1d3145;border-radius:22px;justify-content:space-between;align-items:center;gap:40px;min-height:335px;padding:clamp(28px,4vw,50px);display:flex;position:relative;overflow:hidden}.hero-panel:after{content:"";border:1px solid #2dd4bf21;border-radius:50%;width:400px;height:400px;position:absolute;right:-170px;box-shadow:0 0 0 55px #2dd4bf06,0 0 0 110px #2dd4bf05}.hero-copy{z-index:1;max-width:660px;position:relative}.scheme-badge,.eyebrow{color:var(--teal);letter-spacing:1px;text-transform:uppercase;align-items:center;gap:6px;font-size:11px;font-weight:700;display:inline-flex}.scheme-badge{background:#2dd4bf0f;border:1px solid #2dd4bf33;border-radius:999px;padding:6px 10px}.hero-copy h1{letter-spacing:-2.2px;margin:19px 0 13px;font:800 clamp(34px,4.2vw,56px)/1.08 Manrope}.hero-copy h1 em{color:var(--teal);font-style:normal}.hero-copy>p{color:#9aacc0;max-width:610px;margin:0;line-height:1.7}.hero-actions{gap:11px;margin-top:27px;display:flex}.primary-button,.secondary-button{border-radius:10px;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 17px;font-size:13px;font-weight:700;display:inline-flex}.primary-button{color:#06201e;border:1px solid var(--teal);background:var(--teal)}.primary-button:hover{background:#5eead4}.primary-button:disabled{opacity:.4;cursor:not-allowed}.secondary-button{color:#c5d0df;background:#132033;border:1px solid #2a3a50}.secondary-button:disabled{opacity:.35;cursor:not-allowed}.confidence-card{z-index:2;text-align:center;flex:none;width:190px;position:relative}.orbit{border:8px solid #2dd4bf1a;border-top-color:var(--teal);border-right-color:var(--teal);border-radius:50%;place-content:center;width:125px;height:125px;margin:auto;display:grid;box-shadow:0 0 40px #2dd4bf1a}.orbit span{font:800 27px Manrope}.orbit small{color:#688198;text-transform:uppercase;letter-spacing:1px;font-size:10px}.confidence-card h3{margin:17px 0 4px;font:700 17px Manrope}.confidence-card>p{color:#74869a;margin:0;font-size:11px;line-height:1.4}.gentle-note{color:#e3b86a;background:#fbbf2412;border-radius:8px;justify-content:center;gap:6px;margin-top:14px;padding:8px;font-size:10px;display:flex}.section-heading{justify-content:space-between;align-items:flex-start;gap:20px;display:flex}.section-heading h2{letter-spacing:-.7px;margin:7px 0 6px;font:700 clamp(20px,2vw,27px) Manrope}.section-heading p{color:var(--muted);margin:0;font-size:13px}.inline-heading{align-items:end;margin-bottom:16px}.quiet-label{color:#53647a;text-transform:uppercase;letter-spacing:1px;font-size:11px}.subject-grid{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}.subject-card{--subject-accent:#2dd4bf;min-height:170px;color:inherit;text-align:left;border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:18px;transition:all .2s}.subject-card:hover,.subject-card.selected{border-color:var(--subject-accent);transform:translateY(-2px);box-shadow:0 12px 25px #00000026}.subject-card>span{color:#62738a;text-transform:uppercase;font-size:10px}.subject-card>strong{color:var(--subject-accent);margin:8px 0 5px;font:700 17px Manrope;display:block}.subject-card>p{color:#a3b0c0;min-height:36px;margin:0;font-size:12px;line-height:1.45}.subject-card>div{background:#233044;border-radius:4px;height:4px;margin-top:20px;position:relative}.subject-card i{border-radius:inherit;background:var(--subject-accent);height:100%;display:block}.subject-card small{color:#5e7086;margin-top:7px;font-size:9px;display:block}.panel{border:1px solid var(--line);background:linear-gradient(145deg,#111d2ff7,#0c1827f7);border-radius:17px;padding:clamp(22px,3vw,32px);box-shadow:0 14px 35px #0000001f}.exam-grid{grid-template-columns:1.25fr .75fr;gap:15px;display:grid}.module-list{margin-top:21px}.module-list>div{border-top:1px solid var(--line);align-items:center;gap:14px;padding:14px 0;display:flex}.module-list>div>span{color:#52657c;font:700 11px Manrope}.module-list>div>div{flex:1}.module-list strong{font-size:13px;display:block}.module-list p{color:#6f8297;margin:4px 0 0;font-size:11px}.module-list b{color:#fbbf24;letter-spacing:1px;background:#fbbf2414;border-radius:5px;padding:4px 7px;font-size:8px}.text-button{color:var(--teal);background:0 0;border:0;align-items:center;gap:7px;padding:10px 0 0;font-size:12px;font-weight:700;display:flex}.timeline{margin-top:20px}.timeline>div{gap:13px;padding-bottom:20px;display:flex;position:relative}.timeline>div:not(:last-child):before{content:"";background:#294057;width:1px;position:absolute;top:39px;bottom:2px;left:19px}.timeline span{width:39px;height:39px;color:var(--teal);background:#2dd4bf0f;border:1px solid #2dd4bf40;border-radius:50%;flex:none;place-items:center;font-size:11px;font-weight:700;display:grid}.timeline p{color:#728399;margin:2px 0 0;font-size:11px;line-height:1.5}.timeline strong{color:#ccd6e4;font-size:13px;display:block}.reassurance{color:#86a09e;background:#2dd4bf0d;border-radius:9px;gap:7px;margin:0;padding:11px;font-size:11px;display:flex}.source-links{grid-template-columns:repeat(4,1fr);gap:10px;margin-top:20px;display:grid}.source-links a{color:#cad4e1;border:1px solid var(--line);background:#0d1929;border-radius:11px;grid-template-columns:1fr auto;align-items:end;min-height:95px;padding:14px;text-decoration:none;transition:all .2s;display:grid}.source-links a:hover{border-color:var(--teal);transform:translateY(-2px)}.source-links span{color:var(--teal);text-transform:uppercase;letter-spacing:1px;grid-column:1/-1;align-self:start;font-size:9px}.source-links strong{font-size:12px;line-height:1.4}.icon-button{color:#8293a8;border:1px solid var(--line);background:#101d2e;border-radius:9px;place-items:center;width:39px;height:39px;display:grid}.segmented-control{border:1px solid var(--line);background:#0a1523;border-radius:10px;margin:25px 0 15px;padding:4px;display:inline-flex}.segmented-control button{color:#75869b;background:0 0;border:0;border-radius:7px;padding:8px 15px;font-size:12px}.segmented-control button.active{color:#dffffa;background:#2dd4bf1f}.plot-shell{border:1px solid var(--line);background:#0b1726;border-radius:13px;width:100%;overflow:hidden}.plot{width:100%}.controls-grid{grid-template-columns:repeat(2,1fr);gap:20px;margin:18px 0;display:grid}.controls-grid label{color:#8ea0b4;font-size:12px}.controls-grid label span{justify-content:space-between;display:flex}.controls-grid strong{color:var(--teal)}.controls-grid input{width:100%;accent-color:var(--teal);margin-top:10px}.insight-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.insight-grid article{color:var(--violet);border:1px solid var(--line);background:#0d1929;border-radius:11px;gap:12px;padding:16px;display:flex}.insight-grid strong{color:#d9e2ee;font-size:12px}.insight-grid p{color:#8293a8;margin:4px 0 0;font-size:11px;line-height:1.5}.problem-tabs{grid-template-columns:repeat(2,1fr);gap:9px;margin:24px 0 13px;display:grid}.problem-tabs button{color:#8395aa;border:1px solid var(--line);background:#0d1929;border-radius:10px;flex-direction:column;align-items:flex-start;padding:12px 14px;display:flex}.problem-tabs button.active{color:var(--teal);background:#2dd4bf0f;border-color:#2dd4bf73}.problem-tabs span{color:#64768d;margin-top:3px;font-size:10px}.question-card{border-left:3px solid var(--violet);background:#0d1929;border-radius:3px 12px 12px 3px;padding:20px}.course-pill,.marks-pill{color:var(--violet);background:#a78bfa1a;border-radius:5px;padding:4px 7px;font-size:9px;font-weight:700}.marks-pill{color:#fbbf24;background:#fbbf2414;margin-left:7px}.question-card h3{margin:13px 0 8px;font:600 15px/1.55 Manrope}.question-card p{color:#62768c;margin:0;font-size:10px}.progress-row{color:#728399;text-transform:uppercase;letter-spacing:.8px;justify-content:space-between;margin-top:20px;font-size:10px;display:flex}.progress-row strong{color:var(--teal)}.step-progress{gap:5px;margin:7px 0 20px;display:flex}.step-progress span{background:#26364b;border-radius:4px;flex:1;height:4px}.step-progress span.filled{background:var(--teal)}.steps-list{gap:9px;display:grid}.solution-step{border:1px solid var(--line);opacity:.72;background:#0c1828;border-radius:11px;gap:13px;padding:14px;display:flex}.solution-step.current{opacity:1;background:#2dd4bf0a;border-color:#2dd4bf59}.step-number{color:#07131d;background:var(--teal);border-radius:50%;flex:none;place-items:center;width:28px;height:28px;font-size:11px;font-weight:800;display:grid}.solution-step h4{margin:4px 0 10px;font-size:12px}.math-line{color:#e6ebf3;min-height:32px;overflow-x:auto}.solution-step p{color:#d6b66c;align-items:center;gap:6px;margin:10px 0 0;font-size:10px;display:flex}.solver-actions{justify-content:space-between;margin-top:18px;display:flex}.search-box{color:#65778d;border:1px solid var(--line);background:#0b1726;border-radius:10px;align-items:center;gap:9px;height:44px;margin:24px 0;padding:0 13px;display:flex}.search-box input{color:#d8e2ee;background:0 0;border:0;outline:0;width:100%}.formula-groups{gap:25px;display:grid}.formula-group h3{color:#74869c;text-transform:uppercase;letter-spacing:1.2px;margin:0 0 10px;font-size:10px}.formula-card{border:1px solid var(--line);background:#0c1828;border-radius:10px;grid-template-columns:180px 1fr auto;align-items:center;gap:18px;min-height:86px;padding:15px;display:grid}.formula-card>div:first-child{flex-direction:column;display:flex}.formula-card span{color:#66798f;margin-top:4px;font-size:10px}.formula-math{color:#e7edf5;overflow-x:auto}.formula-card button{color:#7f91a7;background:0 0;border:0;align-items:center;gap:5px;font-size:10px;display:flex}.empty-state{text-align:center;color:#708197;border:1px dashed var(--line);border-radius:10px;padding:35px}.scrim{display:none}.sidebar nav p{color:#8190a5;font-size:11px}.sidebar nav button{color:#aebbd0;font-size:14px}.brand small{color:#91a0b5;font-size:11px}.sidebar-note strong{font-size:13px}.sidebar-note span{color:#9aabbf;font-size:11px}.topbar>div span,.subject-select span{color:#95a5ba;font-size:12px}.topbar>div strong{font-size:15px}.scheme-badge,.eyebrow{font-size:12px}.hero-copy>p{color:#bdc9d8;font-size:16px}.section-heading p{color:#afbdd0;font-size:14px;line-height:1.55}.quiet-label{color:#8999ae;font-size:12px}.subject-card>span{color:#93a2b6;font-size:11px}.subject-card>strong{font-size:19px}.subject-card>p{color:#c3cddd;font-size:14px;line-height:1.55}.subject-card small{color:#93a3b7;font-size:11px}.module-list>div>span{color:#8192a8;font-size:12px}.module-list strong{font-size:15px}.module-list p{color:#9dafc3;font-size:13px}.module-list b{font-size:10px}.text-button{font-size:14px}.timeline p{color:#9cadc1;font-size:13px}.timeline strong{font-size:15px}.reassurance{color:#a9c3c1;font-size:13px}.source-links span{font-size:11px}.source-links strong,.segmented-control button,.controls-grid label,.insight-grid strong{font-size:14px}.insight-grid p{color:#a7b6c9;font-size:13px}.problem-tabs button{font-size:14px}.problem-tabs span{color:#93a4b8;font-size:12px}.course-pill,.marks-pill{font-size:11px}.question-card h3{font-size:17px}.question-card p{color:#91a3b8;font-size:12px}.progress-row{font-size:12px}.solution-step h4{font-size:14px}.math-line{font-size:17px;line-height:1.7}.solution-step p{font-size:12px;line-height:1.5}.search-box input{font-size:14px}.formula-group h3{font-size:12px}.formula-card strong{font-size:14px}.formula-card span{color:#91a3b8;font-size:12px}.formula-math{font-size:17px;line-height:1.7}.formula-card button{color:#a5b4c7;font-size:12px}.primary-button,.secondary-button{font-size:14px}.text-button,.primary-button,.secondary-button,.sidebar nav button,.subject-card,.source-links a{letter-spacing:.05px}@media (width<=1050px){.subject-grid,.source-links{grid-template-columns:repeat(2,1fr)}.exam-grid{grid-template-columns:1fr}}@media (width<=760px){.sidebar{width:min(290px,86vw);transition:transform .25s;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.brand>button,.mobile-menu{min-width:44px;min-height:44px;display:block}.scrim{z-index:15;background:#0000008c;border:0;display:block;position:fixed;inset:0}.mobile-menu{margin-right:7px}.topbar{height:68px;padding:0 12px}.topbar>div span{display:none}.subject-select span{display:none}.subject-select select{max-width:116px;padding:9px 23px 9px 9px;font-size:12px}main{margin-left:0}.content{padding:18px 12px 48px}.panel{padding:20px 15px}.hero-panel{flex-direction:column;align-items:flex-start;min-height:auto;padding:27px 20px}.confidence-card{display:none}.hero-copy h1{letter-spacing:-1.4px;font-size:34px}.hero-copy>p{font-size:14px}.hero-actions{flex-direction:column;width:100%}.hero-actions button{width:100%;min-height:48px}.subject-grid,.source-links,.insight-grid,.controls-grid{grid-template-columns:1fr}.subject-card{min-height:155px}.problem-tabs{grid-template-columns:1fr}.problem-tabs button,.segmented-control button{min-height:44px}.segmented-control{grid-template-columns:repeat(3,1fr);width:100%;display:grid}.segmented-control button{padding:8px 5px}.plot-shell{margin-inline:0}.formula-card{grid-template-columns:1fr auto;gap:12px}.formula-card>div:first-child{grid-column:1/-1}.formula-math{grid-column:1/2;font-size:14px}.solver-actions{flex-direction:column-reverse;gap:8px}.solver-actions button{width:100%;min-height:46px}.section-heading p{line-height:1.5}.source-links a{min-height:88px}.question-card h3{font-size:14px}.solution-step{padding:12px 10px}.controls-grid input{min-height:30px}.topbar>div strong,.subject-select select{font-size:13px}.hero-copy>p{font-size:15px;line-height:1.65}.segmented-control button{font-size:13px}.formula-math{font-size:16px}.question-card h3{font-size:16px;line-height:1.6}.solution-step h4{font-size:14px}.math-line{font-size:16px}.solution-step p{font-size:12px}.subject-card>p{font-size:14px}.module-list p,.timeline p{font-size:13px}}.survival-banner{background:linear-gradient(105deg,#f9731621,#fbbf240a);border:1px solid #fb923c59;border-radius:16px;justify-content:space-between;align-items:center;gap:22px;padding:22px 25px;display:flex}.survival-banner span,.urgent-badge{color:#fb923c;letter-spacing:1.2px;align-items:center;gap:7px;font-size:11px;font-weight:800;display:flex}.survival-banner h2{margin:6px 0 4px;font:700 21px Manrope}.survival-banner p{color:#aebccf;margin:0;font-size:13px}.survival-banner .primary-button{background:#fb923c;border-color:#fb923c;flex:none}.survival-stack{gap:18px;display:grid}.survival-hero{background:radial-gradient(circle at 83% 45%,#fb923c29,#0000 26%),linear-gradient(130deg,#1b2232,#111b2b);border:1px solid #fb923c4d;border-radius:20px;justify-content:space-between;align-items:center;gap:25px;padding:clamp(27px,4vw,45px);display:flex}.survival-hero h1{letter-spacing:-1.8px;margin:13px 0 9px;font:800 clamp(31px,4vw,48px)/1.13 Manrope}.survival-hero h1 em{color:#fb923c;font-style:normal}.survival-hero p{color:#b6c3d3;max-width:690px;margin:0;font-size:15px;line-height:1.65}.survival-score{text-align:center;min-width:170px}.survival-score strong{color:#fb923c;font:800 35px Manrope;display:block}.survival-score span{color:#9babbe;font-size:12px}.survival-score>div{background:#293548;border-radius:5px;height:6px;margin-top:12px;overflow:hidden}.survival-score i{border-radius:inherit;background:#fb923c;height:100%;display:block}.reality-card{color:#fbbf24;background:#fbbf240f;border:1px solid #fbbf2440;border-radius:13px;gap:13px;padding:17px 20px;display:flex}.reality-card strong{color:#f8d58a}.reality-card p{color:#bac4d2;margin:3px 0 0;font-size:13px;line-height:1.55}.survival-timeline{grid-template-columns:repeat(3,1fr);gap:9px;margin-top:21px;display:grid}.survival-timeline article{border:1px solid var(--line);background:#0c1828;border-radius:10px;flex-direction:column;padding:15px;display:flex}.survival-timeline b{color:#fb923c;font-size:12px}.survival-timeline strong{margin:3px 0;font-size:14px}.survival-timeline span{color:#9aabbe;font-size:12px;line-height:1.45}.package-summary{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.package-summary article{color:var(--teal);border:1px solid var(--line);background:var(--panel);border-radius:12px;grid-template-columns:auto 1fr;column-gap:10px;padding:16px;display:grid}.package-summary strong{color:#e6edf7}.package-summary span{color:#9babbf;grid-column:2;font-size:12px}.module-heading{align-items:center;gap:13px;display:flex}.module-heading>span{color:#07101d;background:var(--teal);border-radius:12px;flex:none;place-items:center;width:45px;height:45px;font-weight:800;display:grid}.module-heading h2{margin:0;font:700 22px Manrope}.module-heading p{color:#91a3b9;margin:2px 0 0;font-size:12px}.module-heading>b{color:#fb923c;text-transform:uppercase;background:#fb923c17;border-radius:6px;margin-left:auto;padding:5px 8px;font-size:10px}.survival-questions{gap:9px;margin-top:20px;display:grid}.survival-question{border:1px solid var(--line);background:#0b1726;border-radius:11px;overflow:hidden}.survival-question.open{border-color:#40e0ca66}.question-toggle{color:#edf4fd;text-align:left;background:0 0;border:0;align-items:center;gap:12px;width:100%;padding:15px;display:flex}.question-toggle>span{width:33px;height:33px;color:var(--teal);border:1px solid #40e0ca4d;border-radius:50%;flex:none;place-items:center;font-size:11px;font-weight:800;display:grid}.question-toggle>span.done{color:#07101d;background:var(--teal)}.question-toggle>div{flex-direction:column;flex:1;display:flex}.question-toggle strong{font-size:14px;line-height:1.45}.question-toggle small{color:#8294aa;margin-top:4px;font-size:11px}.question-toggle>svg{transition:transform .2s}.survival-question.open .question-toggle>svg{transform:rotate(180deg)}.survival-answer{border-top:1px solid var(--line);padding:0 18px 18px 62px}.tiny-idea{background:#fb923c0f;border-left:3px solid #fb923c;margin:16px 0;padding:13px}.tiny-idea span{color:#fb923c;text-transform:uppercase;letter-spacing:1px;font-size:10px;font-weight:800}.tiny-idea p{color:#c4ceda;margin:4px 0 0;font-size:13px}.worked-steps{gap:8px;display:grid}.worked-steps>div{background:#0e1b2d;border:1px solid #1e3047;border-radius:9px;align-items:flex-start;gap:11px;padding:12px;display:flex}.worked-steps b{color:#07101d;background:var(--teal);border-radius:50%;flex:none;place-items:center;width:24px;height:24px;font-size:10px;display:grid}.worked-steps>div>div{min-width:0}.worked-steps strong{color:#bac8d8;margin-bottom:6px;font-size:12px;display:block}.worked-steps mjx-container{overflow:auto hidden;font-size:108%!important}.memory-trick{color:#fb923c;background:#fb923c12;border-radius:9px;gap:9px;margin:13px 0;padding:12px;display:flex}.memory-trick p{color:#bdc8d5;margin:0;font-size:12px}.memory-trick strong{color:#fbad72}.complete-button{color:#07101d;background:var(--teal);border:0;border-radius:9px;min-height:40px;padding:0 15px;font-size:12px;font-weight:700}.complete-button.completed{color:var(--teal);background:#40e0ca14;border:1px solid #40e0ca4d;align-items:center;gap:6px;display:inline-flex}.exam-hall-card h2{margin-top:0;font:700 22px Manrope}.exam-hall-card ol{color:#c2cedc;margin-bottom:0;padding-left:23px}.exam-hall-card li{padding:5px;line-height:1.5}@media (width<=760px){.survival-banner,.survival-hero{flex-direction:column;align-items:flex-start}.survival-banner .primary-button{width:100%;min-height:47px}.survival-score{text-align:left;width:100%}.survival-timeline,.package-summary{grid-template-columns:1fr}.module-heading{align-items:flex-start}.module-heading>b{display:none}.question-toggle{padding:13px 10px}.question-toggle strong{font-size:13px}.survival-answer{padding:0 10px 14px}.worked-steps>div{padding:11px 9px}.worked-steps mjx-container{font-size:100%!important}.complete-button{width:100%;min-height:45px}.survival-hero h1{font-size:31px}.survival-hero p{font-size:14px}}.mock-hero{animation:.55s both rise-in}.analysis-strip{grid-template-columns:repeat(4,1fr);gap:10px;display:grid}.analysis-strip article{text-align:center;border:1px solid var(--line);background:linear-gradient(145deg,#132238,#0c1828);border-radius:12px;padding:16px;animation:.45s both rise-in}.analysis-strip article:nth-child(2){animation-delay:70ms}.analysis-strip article:nth-child(3){animation-delay:.14s}.analysis-strip article:nth-child(4){animation-delay:.21s}.analysis-strip strong{color:var(--teal);font:800 25px Manrope;display:block}.analysis-strip span{color:#9dadc0;font-size:12px}.mock-controls{justify-content:space-between;align-items:center;gap:20px;display:flex}.mock-controls h2{margin:5px 0;font:700 21px Manrope}.mock-controls p{color:var(--muted);margin:0;font-size:13px}.mock-action-row{gap:7px;display:flex}.mock-action-row button{color:#b4c1d1;border:1px solid var(--line);background:#0c1828;border-radius:9px;align-items:center;gap:6px;min-height:42px;padding:0 13px;font-size:12px;font-weight:700;display:flex}.mock-action-row button.active{color:#07151d;border-color:var(--teal);background:var(--teal)}.paper-sheet{color:#182230;background:#fff;border:1px solid #c8d0da;border-radius:5px;overflow:hidden;box-shadow:0 20px 50px #00000040}.paper-header{text-align:center;border-bottom:2px solid #1f2937;padding:28px 32px 20px}.paper-header>div:first-child{color:#334155;justify-content:space-between;font-size:12px;display:flex}.paper-header>div:first-child strong{font-size:16px}.paper-header h2{text-transform:uppercase;margin:17px 0 12px;font:800 clamp(18px,2.4vw,27px) Manrope}.paper-meta{justify-content:space-between;font-weight:700;display:flex}.paper-header p{text-align:left;background:#f8fafc;border:1px solid #94a3b8;margin:18px 0 0;padding:10px;font-size:13px}.paper-module{break-inside:avoid;border-bottom:1px solid #cbd5e1;padding:25px 32px}.paper-module-title{text-align:center;grid-template-columns:auto 1fr;gap:3px 12px;margin-bottom:13px;display:grid}.paper-module-title>span{text-transform:uppercase;grid-column:1/-1;font:800 15px Manrope}.paper-module-title small{color:#475569;grid-column:1/-1;font-size:12px}.paper-module-title em{color:#64748b;grid-column:1/-1;font-size:10px;font-style:normal}.full-question{border:1px solid #0000;border-radius:7px;transition:all .2s}.full-question.chosen{background:#f0fdfa;border-color:#0f766e}.full-question-head{border-bottom:1px solid #d9e0e8;align-items:center;gap:10px;padding:8px 10px;display:flex}.full-question-head h3{margin:0;font:800 16px Manrope}.full-question-head>span{margin-left:auto;font-size:11px;font-weight:700}.full-question-head button{color:#0f766e;background:#ccfbf1;border:1px solid #5eead4;border-radius:6px;align-items:center;gap:5px;min-height:34px;padding:0 10px;font-size:10px;font-weight:700;display:flex}.paper-part{border-bottom:1px solid #e2e8f0}.paper-part:last-child{border-bottom:0}.paper-part-prompt{color:#172033;text-align:left;background:0 0;border:0;grid-template-columns:46px 1fr auto auto;align-items:start;gap:9px;width:100%;padding:13px 10px;display:grid}.paper-part-prompt:disabled{cursor:default}.paper-part-prompt>b{font-size:12px}.paper-part-prompt>div{flex-direction:column;display:flex}.paper-part-prompt>div>span{font:500 13px/1.55 DM Sans}.paper-part-prompt small{color:#64748b;margin-top:4px;font-size:10px}.paper-part-prompt em{white-space:nowrap;font-size:11px;font-style:normal;font-weight:700}.or-divider{align-items:center;gap:10px;margin:8px 0;display:flex}.or-divider:before,.or-divider:after{content:"";background:#64748b;flex:1;height:1px}.or-divider span{font-size:12px;font-weight:900}.evaluation-scheme{color:#e7eef8;background:#0c1828;padding:15px}.child-explanation{background:#fb923c14;border-left:3px solid #fb923c;margin-bottom:12px;padding:11px}.child-explanation span{color:#fb923c;text-transform:uppercase;font-size:10px;font-weight:800}.child-explanation p{color:#c6d0dc;margin:4px 0 0;font-size:12px}.scheme-table{border:1px solid #30425a;border-radius:8px;overflow:hidden}.scheme-row{border-bottom:1px solid #283a51;grid-template-columns:1fr 55px;display:grid}.scheme-row:last-child{border-bottom:0}.scheme-row>span{min-width:0;padding:10px}.scheme-row>b{border-left:1px solid #30425a;place-items:center;padding:10px;display:grid}.scheme-row strong{color:#9aadc2;margin-bottom:5px;font-size:11px;display:block}.scheme-row mjx-container{overflow:auto hidden;margin:4px 0!important;font-size:101%!important}.scheme-row.heading{color:#07151d;background:var(--teal);text-transform:uppercase;font-size:11px}.scheme-row.total{background:#13243a}.scheme-row.total span{align-items:center;gap:6px;font-weight:700;display:flex}.final-answer{background:#40e0ca0f;border:1px solid #40e0ca40;border-radius:8px;margin:12px 0;padding:12px;overflow-x:auto}.final-answer span{color:var(--teal);text-transform:uppercase;font-size:10px;font-weight:800;display:block}.source-audit h2{margin-top:0;font:700 21px Manrope}.source-audit p{color:var(--muted);font-size:13px;line-height:1.6}.source-audit code{color:#fb923c}.source-audit>div{flex-wrap:wrap;gap:8px;display:flex}.source-audit a{color:var(--teal);border:1px solid var(--line);background:#0c1828;border-radius:7px;align-items:center;gap:5px;padding:8px 10px;font-size:11px;text-decoration:none;display:flex}.source-audit a:hover{border-color:var(--teal);transform:translateY(-1px)}@keyframes rise-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@media (width<=760px){.analysis-strip{grid-template-columns:repeat(2,1fr)}.mock-controls{flex-direction:column;align-items:stretch}.mock-action-row{grid-template-columns:1fr 1fr;display:grid}.mock-action-row button:last-child{grid-column:1/-1}.paper-header{padding:19px 14px 14px}.paper-header>div:first-child{flex-direction:column;gap:3px}.paper-header h2{font-size:17px}.paper-module{padding:19px 10px}.paper-part-prompt{grid-template-columns:41px 1fr auto;padding:12px 5px}.paper-part-prompt>svg{grid-column:3}.paper-part-prompt>div>span{font-size:12px}.paper-part-prompt em{font-size:9px}.full-question-head button{font-size:0}.full-question-head button svg{width:16px}.scheme-row{grid-template-columns:1fr 42px}.evaluation-scheme{padding:10px 7px}.scheme-row mjx-container{font-size:92%!important}}@media print{.sidebar,.topbar,.no-print,.reality-card,.analysis-strip,.survival-hero{display:none!important}main{margin:0}.content{max-width:none;padding:0}.survival-stack{display:block}.paper-sheet{box-shadow:none;border:0}.paper-module{break-before:auto;break-inside:avoid}.full-question{background:#fff!important;border-color:#0000!important}.paper-header{padding-top:0}@page{size:A4;margin:12mm}}@media (width<=380px){.hero-copy h1{font-size:30px}.topbar>div strong{white-space:nowrap;text-overflow:ellipsis;max-width:112px;overflow:hidden}.subject-select select{max-width:106px}.section-heading h2{font-size:21px}.panel{padding:18px 12px}}
