@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-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-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 components;@layer utilities{.visible{visibility:visible}.fixed{position:fixed}.relative{position:relative}.isolate{isolation:isolate}.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}.hidden{display:none}.inline{display:inline}.table{display:table}.h-full{height:100%}.min-h-full{min-height:100%}.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,)}.flex-col{flex-direction:column}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.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)}.blur{--tw-blur:blur(8px);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,)}.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))}}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);margin:0;font-family:Noto Sans Arabic,Segoe UI,Tahoma,Arial,sans-serif}button,input,textarea{font:inherit}button{cursor:pointer;transition:transform .2s,background .2s,border-color .2s,box-shadow .2s}.shell{width:min(920px,100% - 32px);margin:0 auto}.landing,.result{flex-direction:column;justify-content:center;align-items:flex-start;min-height:100vh;padding-top:80px;padding-bottom:80px;display:flex}.eyebrow{color:var(--accent);letter-spacing:.12em;text-transform:uppercase;font-size:12px;font-weight:700}h1{letter-spacing:-.05em;margin:16px 0;font-size:clamp(38px,7vw,68px);line-height:1}.landing h1 em{color:var(--accent);font-style:normal}.lede{color:var(--muted);font-size:18px;line-height:1.5}.intro-card{border:1px solid var(--line);background:#fff;border-radius:18px;gap:48px;margin:34px 0;padding:22px 28px;display:flex}.intro-card div{flex-direction:column;gap:5px;display:flex}.intro-card strong{font-size:28px}.intro-card span,.muted{color:var(--muted);font-size:13px}.primary,.secondary{border:0;border-radius:10px;padding:13px 20px;font-weight:700}.primary{background:var(--accent);color:#fff;box-shadow:0 8px 18px #176b4d1c}.primary:hover{background:#0e543b;transform:translateY(-1px);box-shadow:0 10px 22px #176b4d2b}.primary:disabled,.secondary:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}.secondary{border:1px solid var(--line);color:var(--ink);background:#fff}.secondary:hover{background:#fbfdfb;border-color:#b7c9be}.muted{margin-top:18px}.guest-button{min-width:190px;margin-top:18px}.optional-access{border-top:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:48px;width:min(700px,100%);margin-top:80px;padding-top:28px;display:flex}.optional-access>div{max-width:290px}.optional-label{color:var(--accent);letter-spacing:.1em;text-transform:uppercase;margin-bottom:10px;font-size:11px;font-weight:700;display:block}.optional-access strong{font-size:20px;display:block}.optional-access p{color:var(--muted);margin:8px 0 0;font-size:14px;line-height:1.5}.optional-access .signup-form{width:280px;margin-top:0}.signup-form{flex-direction:column;gap:10px;width:min(360px,100%);margin-top:12px;display:flex}.signup-form input{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:10px;outline:none;padding:13px 14px}.signup-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #176b4d18}.signup-form .primary{margin-top:4px}.signup-form button:disabled{opacity:.65;cursor:wait}.error{color:#a63b32;margin:4px 0;font-size:13px}.quiz-shell{padding:38px 0 50px}.quiz-header,.quiz-footer{justify-content:space-between;align-items:center;gap:20px;display:flex}.quiz-header h1{margin:8px 0 0;font-size:30px}.quiz-header h1 span{color:var(--muted);letter-spacing:0;font-size:16px}.progress-label{color:var(--muted);font-weight:700}.progress,.result-bar{background:#e4ece7;border-radius:99px;height:7px;margin:26px 0 35px;overflow:hidden}.progress span,.result-bar span{background:var(--accent);border-radius:inherit;height:100%;transition:width .2s;display:block}.question-card{border:1px solid var(--line);background:#fff;border-radius:20px;padding:clamp(24px,5vw,52px);box-shadow:0 12px 35px #1d4d3710}.question-number{color:var(--accent);font-size:14px;font-weight:700}.question-card h2{letter-spacing:-.02em;margin:16px 0 30px;font-size:clamp(22px,3vw,32px);line-height:1.25}.options{gap:12px;display:grid}.option{text-align:left;border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:12px;align-items:flex-start;gap:14px;padding:16px;line-height:1.4;display:flex}.option:hover,.option.selected{border-color:var(--accent);background:var(--soft)}.letter{width:28px;height:28px;color:var(--accent);background:#edf2ee;border-radius:50%;flex:none;place-items:center;font-weight:700;display:grid}.selected .letter{background:var(--accent);color:#fff}.quiz-footer{margin-top:24px}.quiz-footer>span{color:var(--muted);font-size:14px}.result{text-align:center;align-items:center}.result .lede{max-width:500px}.result-bar{width:min(500px,100%);margin:28px 0}.question-image{object-fit:contain;object-position:top;background:#fff;border:1px solid #edf1ee;border-radius:8px;width:100%;height:auto;max-height:720px;margin:0 0 28px;display:block}.answer-feedback{text-align:right;direction:rtl;border-radius:12px;margin-top:16px;padding:13px 15px;font-size:14px;line-height:1.65}.answer-feedback b{direction:ltr;unicode-bidi:isolate}.answer-feedback.correct{color:#155c3c;background:#eaf7ef;border:1px solid #b9dec5}.answer-feedback.incorrect{color:#8a3b20;background:#fff2eb;border:1px solid #f0c8b6}.answer-feedback.neutral{background:var(--soft-blue);color:#244d8d;border:1px solid #dbe6f6}.options{grid-template-columns:repeat(4,minmax(0,1fr))}.option{justify-content:center}.app-shell{background:var(--paper);min-height:100vh;display:flex}.sidebar{border-right:1px solid var(--line);width:230px;color:var(--ink);background:#fff;flex-direction:column;flex:none;padding:32px 18px;display:flex}.brand{color:var(--accent);letter-spacing:-.04em;margin:0 10px 48px;font-size:25px;font-weight:800}.student-mini{align-items:center;gap:10px;margin:0 10px 30px;font-size:13px;display:flex}.sidebar nav{gap:5px;display:grid}.sidebar nav button,.feedback-link{color:var(--muted);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:9px;padding:12px 10px}.feedback-link{color:var(--muted);margin-top:auto;font-size:12px}.content{width:min(1100px,100%);margin:0 auto;padding:64px clamp(24px,6vw,96px)}.page-heading{justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:40px;display:flex}.page-heading h1{margin:10px 0 0;font-size:clamp(32px,4vw,52px)}.stats-grid{grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:28px;display:grid}.stat,.panel,.hero-card{border:1px solid var(--line);background:#fff;border-radius:16px;box-shadow:0 12px 32px #183d2b06}.stat{flex-direction:column;gap:12px;padding:22px;display:flex}.stat span,.panel-title span{color:var(--muted);font-size:12px}.stat strong{font-size:25px}.hero-card{background:#eef6f1;border-color:#dcece1;justify-content:space-between;align-items:center;margin-bottom:28px;padding:40px;display:flex}.hero-card h2{letter-spacing:-.03em;margin:12px 0;font-size:30px}.hero-card p{color:#527565;max-width:520px;line-height:1.6}.hero-orbit{color:#176b4d;border:16px solid #c1e2cd;border-right-color:#1b7654;border-radius:50%;place-items:center;width:120px;height:120px;font-weight:800;display:grid}.two-col{grid-template-columns:1fr 1fr;gap:24px;display:grid}.panel{padding:28px}.panel-title{justify-content:space-between;align-items:center;display:flex}.panel h2{margin:0 0 22px}.heatmap{grid-template-columns:repeat(7,1fr);gap:7px;display:grid}.heatmap i{aspect-ratio:1;background:#edf3ef;border-radius:4px}.heatmap i.warm{background:#b9dec5}.heatmap i.hot{background:#2d9167}.quest,.leader-row,.mastery-row{border-bottom:1px solid #edf2ee;align-items:center;gap:12px;padding:15px 0;display:flex}.quest:last-child,.leader-row:last-child{border:0}.quest b,.leader-row b{color:var(--accent);margin-left:auto;font-size:13px}.check{border:1px solid #cddbd2;border-radius:50%;width:22px;height:22px}.check.done{background:var(--accent);color:#fff;text-align:center}.avatar{color:#176b4d;background:#d8efe0;border-radius:50%;place-items:center;width:30px;height:30px;font-weight:800;display:grid}.avatar.small{width:32px;height:32px}.avatar.large{width:72px;height:72px;font-size:28px}.tier-badge{color:#745e1d;background:#f0e7ba;border-radius:99px;padding:9px 13px;font-size:12px;font-weight:700}.mastery-panel{max-width:760px}.mastery-row{gap:18px}.mastery-row>span{width:170px;font-size:14px}.mastery-track{background:#e7f0ea;border-radius:99px;flex:1;height:8px}.mastery-track i{background:var(--accent);border-radius:inherit;height:100%;display:block}.mastery-row b{width:100px;color:var(--muted);text-align:right;font-size:12px}.profile-card,.creator-card{max-width:700px}.profile-top{align-items:center;gap:16px;margin-bottom:25px;display:flex}.profile-top h2{margin:0 0 5px}.profile-top p{color:var(--muted);margin:0}.profile-card label{color:var(--muted);gap:8px;font-size:13px;display:grid}.profile-card textarea,.modal textarea{resize:vertical;border:1px solid var(--line);min-height:95px;font:inherit;border-radius:10px;margin-bottom:16px;padding:12px}.achievement-card{color:#fff;background:#153d2e;border-radius:13px;margin-top:28px;padding:20px}.achievement-card h2{margin:12px 0 5px}.creator-card{text-align:center}.creator-card .avatar{margin:0 auto 16px}.modal-backdrop{z-index:20;background:#0d2c2066;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.modal{background:#fff;border-radius:18px;width:min(440px,100%);padding:30px;position:relative;box-shadow:0 20px 80px #092d1e33}.modal h2{margin:10px 0}.modal textarea{width:100%;display:block}.close{color:var(--muted);background:0 0;border:0;font-size:28px;position:absolute;top:15px;right:18px}.tour{text-align:center}.tour .primary{width:100%;margin-top:15px}.tour p{color:var(--muted);line-height:1.5}.tour-dots{justify-content:center;gap:6px;margin:24px 0 5px;display:flex}.tour-dots i{background:#d5e4da;border-radius:50%;width:7px;height:7px}.tour-dots i.active{background:var(--accent)}.text-button{color:var(--muted);cursor:pointer;background:0 0;border:0;margin-top:12px}.paper-grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.subject-switcher{border:1px solid var(--line);width:100%;color:var(--ink);font:inherit;background:#fbfdfb;border-radius:9px;margin:0 0 24px;padding:10px}.subject-switcher-panel{border:1px solid var(--line);background:#fff;border-radius:16px;justify-content:space-between;align-items:center;gap:24px;margin:-30px 0 42px;padding:14px 16px;display:flex;box-shadow:0 8px 24px #183d2b06}.subject-switcher-panel>div:first-child{gap:4px;min-width:130px;display:grid}.subject-switcher-panel>div:first-child strong{font-size:15px}.subject-pills{gap:8px;display:flex;overflow-x:auto}.subject-pill{border:1px solid var(--line);min-height:44px;color:var(--muted);white-space:nowrap;background:#fff;border-radius:12px;align-items:center;gap:7px;padding:8px 13px;font-size:13px;font-weight:700;display:flex}.subject-pill:hover,.subject-pill.active{color:var(--ink);background:var(--soft);border-color:#9bcbb0}.subject-pill span:first-child{font-size:18px}.subject-pill.subject-chemistry.active{background:var(--soft-amber);border-color:#d9b76d}.subject-pill.subject-physics.active{background:var(--soft-blue);border-color:#9ab8e6}.subject-pill.subject-coordinated-sciences.active{background:#fff1ef;border-color:#d7a7a0}.saved-chip,.guest-chip{white-space:nowrap;border-radius:99px;margin-inline-start:auto;padding:4px 7px;font-size:10px;font-weight:800}.saved-chip{color:var(--accent);background:var(--soft)}.guest-chip{color:var(--accent-amber);background:var(--soft-amber)}.mobile-nav{display:none}.logo-mark{vertical-align:middle;width:28px;height:28px;color:var(--accent);margin-inline-end:7px}.setup-loading{min-height:100vh;color:var(--muted);place-content:center;justify-items:center;gap:12px;font-size:14px;display:grid}.setup-loading .logo-mark{width:38px;height:38px;margin:0}.setup-screen{flex-direction:column;justify-content:center;align-items:flex-start;min-height:100vh;padding:52px 0 72px;display:flex}.setup-screen h1{margin-bottom:12px}.setup-screen h1 em{color:var(--accent);font-style:normal}.setup-screen .lede{max-width:560px}.setup-progress{direction:rtl;background:#e9efeb;border-radius:99px;width:100%;max-width:620px;height:5px;margin:0 0 42px}.setup-progress span{border-radius:inherit;background:var(--accent-amber);width:38%;height:100%;display:block}.setup-logo{background:var(--accent);color:#fff;border-radius:9px;place-items:center;width:28px;height:28px;margin-inline-end:7px;font-weight:900;display:grid}.setup-label{gap:10px;width:min(620px,100%);margin-top:28px;font-size:15px;font-weight:700;display:grid}.setup-label input{border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:12px;outline:none;padding:15px}.setup-label input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #176b4d18}.setup-date-label{max-width:300px}.setup-date-label input{text-align:left;direction:ltr}.setup-subjects{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}.setup-subject{border:1px solid var(--line);min-height:125px;color:var(--ink);text-align:right;background:#fff;border-radius:14px;gap:7px;padding:16px;display:grid}.setup-subject:hover,.setup-subject.selected{background:var(--soft);border-color:#9bcbb0}.setup-subject>span{font-size:25px}.setup-subject strong{font-size:14px}.setup-subject small{color:var(--muted);font-size:12px}.setup-submit{min-width:190px;margin-top:30px}.setup-submit:disabled{opacity:.45;cursor:not-allowed}.subject-landing{flex-direction:column;justify-content:center;align-items:flex-start;min-height:100vh;padding:56px 0 72px;display:flex}.landing-brand{color:var(--accent);letter-spacing:-.04em;direction:ltr;align-items:center;margin-bottom:58px;font-size:25px;font-weight:800;display:flex}.subject-landing h1{max-width:700px}.subject-landing h1 em{color:var(--accent);font-style:normal}.subject-landing .lede{max-width:590px}.subject-cards{grid-template-columns:repeat(4,1fr);gap:14px;width:100%;margin:34px 0 24px;display:grid}.subject-card{border:1px solid var(--line);min-height:142px;color:var(--ink);text-align:right;background:#fff;border-radius:16px;gap:10px;padding:20px;display:grid}.subject-card:hover,.subject-card.selected{background:var(--soft);border-color:#9bcbb0;transform:translateY(-2px);box-shadow:0 12px 28px #183d2b0d}.subject-card strong{font-size:18px}.subject-card>span:last-child{color:var(--muted);font-size:13px}.subject-icon{color:var(--accent-amber);font-size:26px}.landing-actions{align-items:center;gap:12px;display:flex}.landing-actions .primary{min-width:160px}.landing-actions span{margin-inline-start:10px}.subject-landing .muted{margin-top:24px}.result-screen{max-width:820px;margin:0 auto;padding:24px 0 60px}.result-screen h1{margin:12px 0 6px}.result-screen .lede{margin-top:0}.score-card{color:#fff;text-align:center;background:#153d2e;border-radius:20px;margin:30px 0 24px;padding:30px}.score-card>strong{font-size:64px;line-height:1;display:block}.score-card small{color:#b8d8c5;font-size:24px}.score-card>span{color:#f0d48a;margin:12px 0 20px;font-weight:800;display:block}.score-card .result-bar{background:#376451;width:100%;margin:0}.score-card .result-bar span{background:#e0b84e}.weak-panel{margin-bottom:24px}.weak-grid{grid-template-columns:repeat(4,1fr);gap:10px;display:grid}.weak-cell{background:var(--soft);border-radius:12px;gap:5px;padding:14px;display:grid}.weak-cell strong{font-size:20px}.weak-cell span{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.weak-cell.mid{background:var(--soft-amber)}.weak-cell.weak{background:#fbeceb}.result-actions{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.result-actions .text-button{margin-inline-start:auto}.dashboard-papers-link{color:var(--accent);margin-top:18px;font-weight:700}.saved-result{min-height:44px;color:var(--accent);background:var(--soft);border-radius:10px;align-items:center;padding:0 15px;font-weight:800;display:inline-flex}.quiz-view,.question-card,.options{direction:ltr}.quiz-view .eyebrow,.quiz-view .question-number{text-align:left;direction:rtl}.dashboard-utility-grid{grid-template-columns:1fr 1.35fr;gap:16px;margin-bottom:28px;display:grid}.exam-date-card,.flashcard{border:1px solid var(--line);background:#fff;border-radius:16px;min-height:150px;padding:22px;box-shadow:0 12px 32px #183d2b06}.exam-date-card{background:var(--soft-amber);border-color:#eadfca;align-content:center;gap:8px;display:grid}.exam-date-card strong{color:#745e1d;font-size:22px}.exam-date-card small{color:#8b7740;direction:ltr;font-size:12px}.flashcard{background:var(--soft-blue);color:#244d8d;border-color:#dbe6f6}.flashcard h2{color:var(--ink);margin:8px 0 0;font-size:28px}.flashcard p{color:var(--ink);margin:12px 0 5px;line-height:1.6}.flashcard small{margin-bottom:8px;line-height:1.5;display:block}.flashcard-badge{color:var(--accent-blue);background:#fff;border-radius:99px;padding:5px 8px;font-size:10px;font-weight:800}.flashcard-reveal{margin-top:20px}.flashcard .text-button{color:var(--accent-blue);padding-inline:0}.paper-choice{border:1px solid var(--line);min-height:140px;color:var(--ink);text-align:left;cursor:pointer;background:#fff;border-radius:16px;gap:9px;padding:22px;transition:transform .18s,border-color .18s,box-shadow .18s;display:grid}.paper-choice:hover,.paper-choice.selected{border-color:#9bcbb0;transform:translateY(-2px);box-shadow:0 12px 28px #183d2b0d}.paper-choice.selected{background:var(--soft)}.paper-choice strong{letter-spacing:-.03em;font-size:24px}.paper-choice>span:last-child{color:var(--muted);font-size:13px}.paper-actions{justify-content:flex-end;margin-top:22px;display:flex}.topic-filter{color:var(--muted);align-items:center;gap:14px;margin:-18px 0 24px;font-size:13px;display:flex}.topic-filter select{border:1px solid var(--line);min-width:280px;color:var(--ink);font:inherit;background:#fff;border-radius:10px;padding:11px 13px}.topic-intro{background:var(--soft-blue);color:#244d8d;border:1px solid #dbe6f6;border-radius:16px;justify-content:space-between;align-items:center;gap:20px;margin:-2px 0 24px;padding:20px 22px;display:flex}.topic-intro div{gap:5px;display:grid}.topic-intro strong{font-size:19px}.topic-intro span{font-size:13px}.topic-count{color:var(--accent-blue);white-space:nowrap;font-weight:700}.set-grid{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.set-card{background:var(--soft-amber);min-height:150px;color:var(--ink);text-align:left;cursor:pointer;border:1px solid #eadfca;border-radius:16px;gap:9px;padding:22px;transition:transform .18s,box-shadow .18s;display:grid}.set-card:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 12px 28px #b7791f1a}.set-card.locked{opacity:.48;cursor:not-allowed}.set-number{color:var(--accent-amber);text-transform:uppercase;letter-spacing:.06em;font-size:12px;font-weight:800}.set-card.done .set-number{color:var(--accent)}.set-card>span:last-child{color:var(--muted);font-size:13px}@media (max-width:800px){.paper-grid{grid-template-columns:1fr 1fr}}@media (max-width:520px){.paper-grid{grid-template-columns:1fr}}@media (max-width:700px){.subject-landing{padding:30px 0 48px}.landing-brand{margin-bottom:36px}.subject-cards{grid-template-columns:repeat(2,1fr)}.landing-actions{flex-direction:column;align-items:stretch;width:100%}.landing-actions button{width:100%}.result-screen{padding-top:0}.weak-grid{grid-template-columns:repeat(2,1fr)}.result-actions{flex-direction:column;align-items:stretch}.result-actions button{width:100%}.result-actions .text-button{margin-inline-start:0}.setup-screen{padding:30px 0 48px}.setup-progress{margin-bottom:32px}.setup-subjects{grid-template-columns:repeat(2,1fr)}.setup-subject{min-height:110px}.dashboard-utility-grid{grid-template-columns:1fr}.exam-date-card,.flashcard{min-height:130px}}@media (max-width:800px){.set-grid{grid-template-columns:1fr 1fr}}@media (max-width:520px){.set-grid{grid-template-columns:1fr}.topic-intro{flex-direction:column;align-items:flex-start}}@media (max-width:700px){.app-shell{display:block}.sidebar{width:100%;padding:14px 16px}.brand{margin:0 14px 0 0;display:inline-block}.student-mini{margin:0;display:inline-flex}.sidebar nav{margin-top:14px;display:flex;overflow:auto}.sidebar nav button{white-space:nowrap}.feedback-link{display:none}.content{padding:28px 16px}.stats-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr}.hero-card{display:block}.hero-orbit{display:none}.page-heading{flex-direction:column;align-items:flex-start}.mastery-row>span{width:125px}.mastery-row b{width:auto}.quiz-view{padding-top:0}.options{grid-template-columns:repeat(2,minmax(0,1fr))}.optional-access{margin-top:56px;display:block}.optional-access .signup-form{width:100%;margin-top:22px}.subject-switcher-panel{margin:-10px 0 28px;padding:12px;display:block}.subject-switcher-panel>div:first-child{margin-bottom:10px}.subject-pills{margin-inline:-3px;padding:3px}.subject-pill{flex:none}.sidebar .subject-switcher,.sidebar nav{display:none}.content{padding-bottom:92px}.mobile-nav{z-index:15;padding:7px 8px max(7px, env(safe-area-inset-bottom));border-top:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);inset-inline:0;background:#fffffff2;grid-template-columns:repeat(5,1fr);display:grid;position:fixed;bottom:0;box-shadow:0 -8px 25px #183d2b10}.mobile-nav button{min-height:48px;color:var(--muted);background:0 0;border:0;justify-items:center;gap:3px;display:grid}.mobile-nav button span{font-size:20px;line-height:1}.mobile-nav button small{font-size:10px;font-weight:700}.mobile-nav button.active{color:var(--accent)}.student-mini{max-width:calc(100% - 120px)}}.home-dashboard{max-width:980px;margin:0 auto;padding-top:10px}.home-welcome{justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:42px;display:flex}.home-welcome h1{margin:10px 0 8px}.home-study-panel{border:1px solid var(--line);background:#fff;border-radius:24px;padding:34px;box-shadow:0 18px 44px #183d2b08}.home-study-panel h2{letter-spacing:-.04em;margin:8px 0 6px;font-size:30px}.home-study-panel p{color:var(--muted);margin:0 0 28px}.home-kicker{color:var(--accent);font-size:12px;font-weight:800}.home-subject-grid{grid-template-columns:repeat(4,1fr);gap:14px;display:grid}.home-subject{border:1px solid var(--line);min-height:190px;color:var(--ink);text-align:right;background:#fff;border-radius:18px;gap:8px;padding:22px;transition:transform .2s,box-shadow .2s;display:grid;position:relative;overflow:hidden}.home-subject:hover{transform:translateY(-4px);box-shadow:0 16px 30px #183d2b12}.home-subject-icon{border-radius:15px;place-items:center;width:48px;height:48px;margin-bottom:16px;font-size:26px;display:grid}.home-subject strong{text-align:right;direction:ltr;font-size:18px}.home-subject small{color:var(--muted);font-size:13px}.home-subject-arrow{font-size:20px;position:absolute;bottom:20px;left:20px}.home-subject-biology{border-top:4px solid var(--accent)}.home-subject-biology .home-subject-icon{color:var(--accent);background:var(--soft)}.home-subject-chemistry{border-top:4px solid var(--accent-amber)}.home-subject-chemistry .home-subject-icon{color:var(--accent-amber);background:var(--soft-amber)}.home-subject-physics{border-top:4px solid var(--accent-blue)}.home-subject-physics .home-subject-icon{color:var(--accent-blue);background:var(--soft-blue)}.home-subject-coordinated-sciences{border-top:4px solid #b95b4c}.home-subject-coordinated-sciences .home-subject-icon{color:#b95b4c;background:#fff1ef}.home-account-note{color:var(--muted);justify-content:space-between;align-items:center;margin-top:24px;padding:16px 4px;font-size:13px;display:flex}.compact-landing{justify-content:flex-start;min-height:auto;padding:12px 0 60px}.back-button{color:var(--muted);margin-bottom:50px;padding:0}.mode-cards{grid-template-columns:1fr 1fr;gap:18px;width:100%;margin-top:34px;display:grid}.mode-card{border:1px solid var(--line);min-height:235px;color:var(--ink);text-align:right;border-radius:22px;gap:9px;padding:30px;transition:transform .2s,box-shadow .2s;display:grid;position:relative;overflow:hidden}.mode-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px #183d2b12}.mode-paper{background:var(--soft-amber);border-color:#eadfca}.mode-classified{background:var(--soft-blue);border-color:#dbe6f6}.mode-icon{font-size:34px}.mode-card strong{text-align:right;direction:ltr;font-size:27px}.mode-card b{font-size:16px}.mode-card small{max-width:280px;color:var(--muted);line-height:1.55}.mode-arrow{font-size:24px;position:absolute;bottom:28px;left:28px}.topic-filter select{appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--accent) 50%),linear-gradient(135deg, var(--accent) 50%, transparent 50%);background-position:calc(100% - 18px),calc(100% - 12px);background-repeat:no-repeat;background-size:6px 6px;padding-inline-end:34px}@media (max-width:700px){.home-welcome{flex-direction:column;align-items:flex-start;margin-bottom:28px}.home-welcome .secondary{width:100%}.home-study-panel{padding:22px}.home-subject-grid{grid-template-columns:repeat(2,1fr)}.home-subject{min-height:160px;padding:16px}.home-subject-icon{margin-bottom:8px}.mode-cards{grid-template-columns:1fr}.mode-card{min-height:190px;padding:24px}}.solve-mode-toggle{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:12px;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px;padding:12px 16px;display:flex}.solve-mode-toggle label{align-items:center;gap:9px;font-size:13px;font-weight:700;display:flex}.solve-mode-toggle input{accent-color:var(--accent-blue);width:17px;height:17px}.solve-mode-toggle small{color:var(--muted);font-size:12px}.performance-view{max-width:1000px;margin:0 auto}.performance-panel{padding:30px 28px 22px;overflow-x:auto}.grade-axis{width:36px;height:260px;color:var(--muted);float:right;flex-direction:column;justify-content:space-between;font-size:12px;display:flex}.graph-area{border-bottom:1px solid var(--line);border-left:1px solid var(--line);direction:ltr;background:repeating-linear-gradient(#0000 0 51px,#edf2ee 52px);align-items:flex-end;gap:clamp(10px,2vw,22px);min-width:620px;height:260px;margin-right:48px;padding:0 16px;display:flex}.graph-column{flex-direction:column;justify-content:flex-end;align-items:center;gap:8px;min-width:56px;height:100%;display:flex}.graph-column small{text-overflow:ellipsis;white-space:nowrap;width:80px;color:var(--muted);transform-origin:100% 0;direction:rtl;font-size:11px;overflow:hidden;transform:rotate(-35deg)translate(-10px,13px)}.graph-bar{background:linear-gradient(to top, var(--accent-blue), #83a5df);color:#fff;border-radius:8px 8px 0 0;justify-content:center;align-items:flex-start;width:34px;min-height:8px;padding-top:6px;font-size:10px;display:flex}.graph-axis-label{color:var(--muted);justify-content:space-between;margin:40px 0 0 48px;font-size:11px;display:flex}@media (max-width:700px){.solve-mode-toggle{flex-direction:column;align-items:flex-start;gap:5px}.performance-panel{padding:22px 14px}.graph-area{margin-right:40px}.graph-axis-label{margin-left:40px}}.sidebar{align-items:center;width:92px;padding:24px 12px}.sidebar .brand{white-space:nowrap;margin:0;font-size:0}.sidebar .brand .logo-mark{width:38px;height:38px;margin:0}.sidebar .student-mini,.sidebar nav,.sidebar .feedback-link{display:none}@media (max-width:700px){.sidebar{align-items:stretch;width:100%;padding:14px 16px}.sidebar .brand{margin:0 14px 0 0;font-size:25px;display:inline-block}.sidebar .brand .logo-mark{width:28px;height:28px;margin-inline-end:7px}}body{background:radial-gradient(circle at 90% 0%, #eaf5ff 0, transparent 32%), var(--paper)}.sidebar{color:#e8f2ff;background:#0c2342;border-right:0}.sidebar .brand{color:#fff}.sidebar nav button,.feedback-link{color:#a9c2df}.physics-home{max-width:1020px}.physics-hero{color:#fff;background:linear-gradient(120deg,#0c2342,#1257a6 58%,#1f86c9);border-radius:28px;justify-content:space-between;align-items:center;gap:40px;min-height:290px;margin-bottom:28px;padding:42px 48px;display:flex;position:relative;overflow:hidden;box-shadow:0 22px 50px #1257a62e}.physics-hero:after{content:"";border:1px solid #ffffff35;border-radius:50%;width:360px;height:360px;position:absolute;top:-80px;right:-90px;box-shadow:0 0 0 26px #ffffff0d,0 0 0 54px #ffffff08}.physics-hero-copy{z-index:1;max-width:570px;position:relative}.physics-hero .home-kicker{color:#bfe8ff}.physics-hero h2{letter-spacing:-.06em;margin:10px 0;font-size:clamp(32px,5vw,58px)}.physics-hero p{color:#d8eaff;max-width:520px;line-height:1.7}.physics-hero .primary{color:#10233f;box-shadow:none;background:#fbbf24}.physics-orbit{z-index:1;color:#fff;border:10px solid #fbbf24;border-color:#fbbf24 #1f86c9 #bfe8ff #bfe8ff;border-radius:50%;place-items:center;width:150px;height:150px;font:700 22px Georgia,serif;display:grid;position:relative;transform:rotate(-18deg)}.physics-orbit i{background:#fbbf24;border-radius:50%;width:15px;height:15px;position:absolute;top:5px;right:18px}.physics-study-panel{border-color:#cfe0f2;justify-content:space-between;align-items:center;gap:28px;display:flex}.physics-study-panel .home-subject{border-color:#9bc8ed;border-top:4px solid var(--accent-blue);background:linear-gradient(150deg,#f0f8ff,#fff);flex:0 0 250px}.physics-study-panel .home-subject-icon{color:var(--accent-blue);background:var(--soft-blue)}.physics-landing h1 em,.physics-setup h1 em{color:var(--accent-blue)}.physics-landing .mode-paper{background:#fff8e8;border-color:#f4d58b}.physics-landing .mode-classified{background:#eaf5ff;border-color:#b8d9f3}.physics-setup{position:relative}.physics-setup:before{content:"F = ma";color:#1f86c912;pointer-events:none;inset-inline-end:0;font:700 clamp(60px,12vw,150px) Georgia,serif;position:absolute;top:18%;transform:rotate(-9deg)}.physics-setup .landing-brand,.physics-setup h1,.physics-setup .lede,.physics-setup .setup-label,.physics-setup .setup-submit,.physics-setup .muted,.physics-setup .eyebrow{z-index:1;position:relative}@media (max-width:700px){.physics-hero{padding:28px 24px;display:block}.physics-orbit{width:110px;height:110px;margin:28px auto 0}.physics-study-panel{display:block}.physics-study-panel .home-subject{width:100%;margin-top:20px}.physics-hero:after{right:-170px}.physics-setup:before{top:8%}}:root{--ink:#171717;--muted:#777;--line:#dedede;--accent:#222;--accent-blue:#555;--accent-amber:#999;--soft:#f0f0f0;--soft-blue:#e9e9e9;--soft-amber:#f5f5f5;--paper:#f7f7f7}body{background:var(--paper);color:var(--ink)}html,body{max-width:100%;overflow-x:hidden}.hk-logo{object-fit:cover;filter:grayscale();border-radius:10px;width:54px;height:54px;display:block}.hk-logo-compact{border-radius:7px;width:36px;height:36px}.landing-brand{color:var(--ink);align-items:center;gap:12px}.landing-brand span:last-child{letter-spacing:-.05em;font-size:26px;font-weight:800}.hk-setup{direction:ltr;align-items:flex-start}.hk-setup h1 em{color:#555;font-style:normal}.hk-setup .setup-logo{display:none}.app-shell{background:var(--paper)}.sidebar{color:#f4f4f4;background:#1a1a1a;border:0;width:220px;padding:28px 18px}.sidebar .brand{color:#fff;letter-spacing:-.04em;align-items:center;gap:10px;margin:0 8px 44px;font-size:20px;display:flex}.sidebar nav button,.menu-return{color:#aaa;text-align:left}.sidebar nav button:hover,.nav-active{color:#fff!important;background:#353535!important}.student-mini{color:#ddd}.avatar{color:#fff;background:#4a4a4a}.menu-return{cursor:pointer;background:0 0;border:0;padding:10px 0;font-size:13px}.menu-return span{margin-right:6px}.content{max-width:1180px}.hk-home{max-width:1000px;margin:0 auto;padding-top:10px}.hk-home .home-welcome{margin-bottom:26px}.hk-home .home-welcome h1{font-size:clamp(38px,6vw,64px)}.hk-home .home-welcome .lede{color:#555;margin-top:12px;font-size:24px}.hk-choice-grid{grid-template-columns:1fr 1fr;gap:18px;margin-top:22px;display:grid}.hk-choice{min-height:230px;color:var(--ink);text-align:left;border:1px solid #d3d3d3;border-radius:22px;gap:10px;padding:30px;transition:transform .2s,box-shadow .2s,border-color .2s;display:grid;position:relative;overflow:hidden}.hk-choice:hover{border-color:#777;transform:translateY(-4px);box-shadow:0 18px 36px #00000012}.hk-choice-papers{background:#fff;border-top:5px solid #252525}.hk-choice-classified{background:#e9e9e9;border-top:5px solid #777}.hk-choice-icon{color:#222;background:#e7e7e7;border-radius:14px;place-items:center;width:48px;height:48px;font-size:25px;display:grid}.hk-choice strong{letter-spacing:-.04em;font-size:25px}.hk-choice small{color:#666;font-size:14px}.hk-choice-arrow{font-size:25px;position:absolute;bottom:26px;right:28px}.hk-choice-classified .hk-choice-icon{background:#d3d3d3}.paper-choice.selected{background:#ededed;border-color:#222;box-shadow:0 10px 24px #0000000e}.primary{color:#fff;background:#222;box-shadow:0 8px 18px #0000001c}.primary:hover{background:#000}.secondary{color:#222;background:#fff;border-color:#cfcfcf}.progress span,.result-bar span{background:#333}.score-card{background:#222}.score-card .result-bar{background:#555}.topic-intro{color:#333;background:#ededed;border-color:#d2d2d2}.tier-badge{color:#333;background:#e1e1e1}.question-card,.paper-choice,.home-study-panel{box-shadow:0 12px 32px #00000008}@media (max-width:700px){.hk-choice-grid{grid-template-columns:1fr}.hk-choice{min-height:190px}.hk-home .home-welcome .lede{font-size:20px}.sidebar .brand{margin-bottom:20px}.sidebar{width:100%}.hk-logo{width:46px;height:46px}}[dir=rtl]{font-family:Noto Sans Arabic,Segoe UI,Tahoma,Arial,sans-serif}.hk-home{text-align:right;text-align:left}.hk-home .homework-panel,.hk-home .panel-title,.hk-home .hk-choice{text-align:left}.hk-home .home-welcome h1{letter-spacing:0}.hk-home .home-welcome .lede{font-size:22px}.hk-choice{text-align:right}.hk-choice strong{line-height:1.5}.hk-choice-arrow{left:28px;right:auto}.solve-settings{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:12px;justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px;padding:13px 16px;display:flex}.solve-settings label{align-items:center;gap:9px;font-size:13px;font-weight:700;display:flex}.solve-settings input{accent-color:#222;width:17px;height:17px}.solve-settings small{color:var(--muted);font-size:12px}.instant-feedback{border-radius:10px;margin-top:18px;padding:14px 16px;font-weight:700;line-height:1.5}.instant-feedback.is-correct{color:#1e5b36;background:#edf7ef;border:1px solid #b8d9c0}.instant-feedback.is-wrong{color:#7a3434;background:#fbefef;border:1px solid #e3bcbc}.topic-buttons{flex-wrap:wrap;gap:10px;margin:4px 0 24px;display:flex}.topic-buttons button{color:#555;font:inherit;cursor:pointer;background:#fff;border:1px solid #cfcfcf;border-radius:999px;padding:11px 16px;font-size:13px;transition:background .2s,color .2s,border-color .2s,transform .2s}.topic-buttons button:hover{border-color:#555;transform:translateY(-1px)}.topic-buttons button.active{color:#fff;background:#222;border-color:#222}@media (max-width:700px){.solve-settings{flex-direction:column;align-items:flex-start;gap:6px}.topic-buttons{gap:8px}.topic-buttons button{padding:10px 13px}}.topic-buttons{scrollbar-width:thin;flex-wrap:nowrap;padding:3px 2px 10px;overflow-x:auto}.topic-buttons button{flex:none}.paper-years{gap:40px;display:grid}.paper-year{padding-top:4px}.paper-year>h2{letter-spacing:-.04em;border-bottom:2px solid #222;margin:0 0 18px;padding-bottom:12px;font-size:34px}.paper-session-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.paper-session{background:#fff;border:1px solid #ddd;border-radius:16px;min-width:0;padding:18px}.paper-session h3{color:#222;letter-spacing:.08em;text-transform:uppercase;margin:0 0 16px;font-size:14px}.variant-list{flex-wrap:wrap;gap:9px;display:flex}.variant-choice{color:#222;text-align:left;cursor:pointer;background:#f8f8f8;border:1px solid #d1d1d1;border-radius:10px;gap:4px;min-width:76px;padding:12px 14px;display:grid}.variant-choice:hover,.variant-choice.selected{background:#e8e8e8;border-color:#222}.variant-choice strong{font-size:22px}.variant-choice small{color:#777;font-size:11px}@media (max-width:800px){.paper-session-grid{grid-template-columns:1fr}.paper-year>h2{font-size:30px}}.upcoming-year{opacity:.72}.paper-year>h2 small{color:#777;letter-spacing:0;margin-left:10px;font-size:14px;font-weight:500}.coming-soon{color:#888;padding:16px 0;font-size:13px}.homework-panel,.chart-panel,.admin-page>.panel{border:1px solid var(--line);background:#fff;border-radius:18px;margin-bottom:24px;padding:24px;box-shadow:0 12px 32px #00000008}.homework-panel .panel-title{justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:12px;display:flex}.homework-panel h2,.chart-panel h2{margin:5px 0 0;font-size:24px}.strike-badge{color:#333;white-space:nowrap;background:#ededed;border-radius:999px;padding:8px 11px;font-size:12px;font-weight:700}.homework-row,.admin-homework{border-top:1px solid #eee;align-items:center;gap:14px;padding:13px 0;display:flex}.homework-row span,.admin-homework span{flex:1;font-weight:700}.homework-row small{color:var(--muted)}.homework-row .secondary{padding:8px 12px}.set-card.done{background:#ededed;border-color:#666}.set-card.done strong{color:#222}.performance-page,.admin-page{max-width:1000px;margin:0 auto}.bar-row{border-bottom:1px solid #eee;grid-template-columns:minmax(150px,1fr) 2fr 100px;align-items:center;gap:14px;padding:13px 0;display:grid}.bar-row>span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.bar-track{background:#e8e8e8;border-radius:999px;height:12px;overflow:hidden}.bar-track i{border-radius:inherit;background:#333;height:100%;display:block}.bar-row b{color:#555;text-align:right;font-size:12px}.admin-form{grid-template-columns:repeat(5,1fr);align-items:center;gap:10px;display:grid}.admin-form select,.admin-form input{border:1px solid var(--line);min-width:0;color:var(--ink);font:inherit;background:#fff;border-radius:9px;padding:11px 10px}.admin-homework b{font-size:13px}@media (max-width:800px){.admin-form{grid-template-columns:1fr 1fr}.bar-row{grid-template-columns:1fr;gap:7px}.bar-row b{text-align:left}.homework-row{flex-wrap:wrap;align-items:flex-start}.homework-row span{flex-basis:100%}}.sidebar{position:relative;overflow:hidden}.sidebar nav{display:grid}.sidebar .student-mini{display:flex}.sidebar:before,.sidebar:after{content:"";pointer-events:none;border:1px solid #ffffff18;border-radius:50%;position:absolute}.sidebar:before{width:260px;height:260px;top:70px;right:-170px;box-shadow:0 0 0 22px #ffffff06,0 0 0 46px #ffffff04}.sidebar:after{width:150px;height:150px;bottom:90px;left:-100px}.sidebar>*{z-index:1;position:relative}.sidebar-caption{color:#888;letter-spacing:.16em;text-transform:uppercase;margin:-32px 8px 30px;font-size:11px}.sidebar nav{gap:8px}.sidebar nav button{text-align:left;border-radius:10px;min-height:46px;padding:13px 12px}.sidebar nav .main-menu-tab{color:#fff;background:#2a2a2a;border:1px solid #777;margin-bottom:9px;font-weight:800}.sidebar nav .main-menu-tab:hover{background:#444!important}.menu-return{color:#fff;background:#222;border:1px solid #222;border-radius:10px;align-items:center;gap:8px;padding:12px 17px;font-weight:800;display:inline-flex;box-shadow:0 8px 18px #0000001c}.menu-return:hover{background:#000;transform:translateY(-1px)}.sidebar .student-mini{border-top:1px solid #ffffff16;border-bottom:1px solid #ffffff16;padding:10px 8px}.hk-home{position:relative}.hk-home:before{content:"HK";color:#22222208;letter-spacing:-.14em;pointer-events:none;font-size:220px;font-weight:900;position:absolute;top:-35px;right:-25px}.hk-home>*{z-index:1;position:relative}.hk-choice{min-height:250px}.hk-choice:after{content:"";border:1px solid #00000014;border-radius:50%;width:100px;height:100px;position:absolute;top:-25px;right:-25px;box-shadow:0 0 0 18px #00000005}.hk-choice-classified:after{inset:auto auto -25px -25px}@media (max-width:700px){.sidebar-caption{margin-bottom:12px}.sidebar nav{grid-template-columns:repeat(2,1fr);margin-top:10px;display:grid}.sidebar nav .main-menu-tab{margin-bottom:0}.hk-home:before{font-size:130px;top:20px;right:-10px}.hk-choice{min-height:210px}}.creator-page{max-width:1000px;margin:0 auto}.creator-grid{grid-template-columns:1fr 1fr;gap:18px;margin-bottom:24px;display:grid}.creator-card{max-width:none;min-height:250px}.creator-mark{color:#fff;letter-spacing:.08em;background:#222;border-radius:18px;place-items:center;width:64px;height:64px;margin-bottom:18px;font-size:20px;font-weight:800;display:grid}.creator-card h2{margin:8px 0;font-size:28px}.creator-card p{color:var(--muted);line-height:1.6}.contact-links{gap:10px;margin-top:22px;display:grid}.contact-links a{color:#222;font-weight:700;text-decoration:none}.contact-links a:hover{text-decoration:underline}.blank-contact{color:#777;background:#f1f1f1;border-radius:10px;margin-top:24px;padding:15px;line-height:1.8}.feedback-modal textarea{width:100%;min-height:140px;margin:18px 0 12px;display:block}.feedback-tabs{gap:8px;margin-top:20px;display:flex}.feedback-tabs button{color:#555;cursor:pointer;background:#fff;border:1px solid #d4d4d4;border-radius:999px;padding:8px 13px}.feedback-tabs button.active{color:#fff;background:#222;border-color:#222}@media (max-width:700px){.creator-grid{grid-template-columns:1fr}.app-shell{min-height:100dvh;display:block}.sidebar{width:100%;min-height:0;padding:14px 14px 12px}.sidebar .brand{margin:0 0 8px;font-size:18px}.sidebar-caption{margin:0 0 10px}.sidebar .student-mini{margin:0 0 8px}.sidebar nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;width:100%}.sidebar nav button{text-overflow:ellipsis;white-space:nowrap;min-width:0;padding:10px 9px;font-size:12px;overflow:hidden}.content{width:100%;max-width:none;padding:28px 14px 42px}.home-dashboard,.performance-page,.admin-page,.creator-page{width:100%;max-width:none}.home-welcome{margin-bottom:22px}.hk-home .home-welcome h1{font-size:clamp(34px,10vw,50px);line-height:1.05}.hk-home .home-welcome .lede{font-size:18px}.homework-panel{padding:18px}.hk-choice-grid{grid-template-columns:1fr;gap:14px}.hk-choice{min-height:180px;padding:22px}.hk-choice strong{font-size:22px}.page-heading{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:24px}.page-heading h1{font-size:clamp(34px,10vw,48px)}.page-heading .menu-return{align-self:flex-start}.paper-years{gap:26px}.paper-session{padding:14px}.variant-list{gap:7px}.variant-choice{min-width:68px;padding:10px 11px}.quiz-header{flex-direction:column;align-items:flex-start}.quiz-header .menu-return{align-self:flex-start}.question-card{border-radius:14px;padding:16px}.question-image{max-height:55vh;margin-bottom:16px}.options{grid-template-columns:repeat(2,minmax(0,1fr))}.quiz-footer{flex-wrap:wrap}.quiz-footer>span{text-align:center;order:3;width:100%}.solve-settings{padding:11px 12px}.bar-row{grid-template-columns:1fr;gap:6px}.admin-form{grid-template-columns:1fr}.creator-card{min-height:0}.result-screen{padding:28px 18px 50px}}@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-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-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}