body{color:#1f2937;-webkit-font-smoothing:antialiased;background-color:#fcfcfc;justify-content:center;align-items:center;min-height:100vh;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;display:flex;overflow:hidden}.input-incorrect{transition:border-bottom-color .1s ease-in-out;border-bottom-color:#ef4444!important}.input-correct{transition:border-bottom-color .1s ease-out;border-bottom-color:#10b981!important}.answer-display{-moz-appearance:textfield;text-align:center;width:4ch;min-width:180px;max-width:280px;font-family:inherit;font-size:inherit;font-weight:inherit;color:inherit;background:0 0;border:1px solid #0000;border-bottom:4px solid #d1d5db;outline:none;padding:0 8px;line-height:1;transition:border-color .2s}.answer-display:focus{border-bottom-color:#4b5563}.answer-display::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.answer-display::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.menu-item{transition:background-color .2s,color .2s}.menu-item:hover{color:#111827;background-color:#f3f4f6}.math-text{color:#1f2937;white-space:nowrap;font-size:clamp(72px,11vw,136px);font-weight:550}.test-btn{color:#6b21a8;cursor:pointer;background:#f3e8ff;border:1px solid #d8b4fe;border-radius:4px;padding:4px 8px;font-weight:600;transition:background .2s}.test-btn:hover{background:#e9d5ff}.op-card{cursor:pointer;aspect-ratio:1;background:#fff;border:1px solid #e5e7eb;border-radius:16px;flex-direction:column;justify-content:center;align-items:center;width:100%;max-width:260px;padding:2.5rem;transition:background-color .2s,border-color .2s,transform .1s,box-shadow .2s;display:flex;box-shadow:0 2px 6px #00000008}.op-card:hover{background:#f9fafb;border-color:#d1d5db;box-shadow:0 4px 12px #0000000d}.op-card:active{transform:scale(.98)}.feedback-icon{opacity:0;pointer-events:none;flex-direction:column;align-items:center;font-size:80px;font-weight:700;line-height:1;transition:opacity .1s;display:flex;position:absolute;top:-120px;left:50%;transform:translate(-50%)}.feedback-icon.show{opacity:1}.feedback-correct{color:#10b981}.feedback-incorrect{color:#ef4444}.feedback-delta{letter-spacing:-.5px;margin-top:4px;font-size:28px;font-weight:700}.splash-screen{color:#1f2937;background:#fcfcfc;justify-content:center;align-items:center;display:flex;position:fixed;inset:0;overflow:hidden}.splash-center{transform:translateY(-2vh)}.splash-lockup{align-items:center;gap:18px;animation:3.8s cubic-bezier(.22,.61,.36,1) both splash-fade;display:flex}.splash-mark{flex-shrink:0;width:58px;height:58px}.splash-title{letter-spacing:.01em;white-space:nowrap;margin:0;font-size:clamp(38px,6vw,62px);font-weight:600;line-height:1.15}@keyframes splash-fade{0%{opacity:0}15%{opacity:1}78%{opacity:1}to{opacity:0}}.operation-screen{padding:24px 20px 56px;position:fixed;inset:0;overflow-y:auto}.operation-content{flex-direction:column;justify-content:center;align-items:center;width:100%;max-width:600px;min-height:100%;margin:0 auto;display:flex}.operation-grid .op-card{max-width:none;padding:1.5rem}.operation-grid{max-width:min(600px,max(300px,100dvh - 360px))}.op-card.mixed-card{aspect-ratio:auto;flex-direction:row;gap:20px;max-width:none;height:88px;min-height:88px;padding:0 24px}.operation-question{font-size:clamp(26px,2.5vw,30px);font-weight:550;line-height:1.3}.operation-symbol{margin-bottom:10px;font-size:clamp(56px,5vw,64px);font-weight:350;line-height:1}.operation-label{font-size:clamp(24px,2.4vw,30px);font-weight:600;line-height:1.2}.mixed-symbols{white-space:nowrap;font-size:clamp(32px,2.7vw,36px);font-weight:350;line-height:1}.mixed-label{white-space:nowrap;font-size:clamp(26px,2.3vw,29px);font-weight:600;line-height:1.2}.op-card.mixed-card{gap:16px;padding:0 16px}.operation-actions{justify-content:center;align-items:center;gap:28px;display:flex}.operation-helper{font-size:17px;font-weight:500}.score-certification{color:#1f2937;background:#fcfcfc;padding:92px 24px 40px;position:fixed;inset:0;overflow-y:auto}.certification-content{width:100%;max-width:600px;margin:0 auto}.certification-heading{text-align:center;margin:0;font-size:clamp(28px,3vw,34px);font-weight:600}.certification-date{text-align:center;color:#6b7280;margin-top:10px;margin-bottom:28px;font-size:17px;display:block}.certification-rows{margin:0}.certification-row{border-bottom:1px solid #e5e7eb;justify-content:space-between;align-items:baseline;gap:24px;padding:15px 0;display:flex}.certification-row:last-child{border-bottom:none}.certification-row dt{white-space:nowrap;font-size:clamp(24px,2.4vw,28px);font-weight:550}.certification-row dd{white-space:nowrap;font-variant-numeric:tabular-nums;margin:0}.certification-number{font-size:clamp(36px,4vw,44px);font-weight:700;line-height:1.2}.certification-unit{color:#6b7280;margin-left:4px;font-size:20px}.problem-screen{background:#fcfcfc;padding:108px 20px 104px;position:fixed;inset:0;overflow-y:auto}.problem-content{flex-direction:column;justify-content:center;align-items:center;min-height:100%;padding-top:8px;display:flex}.home-button{justify-content:center;align-items:center;gap:8px;display:inline-flex}.home-button svg{flex-shrink:0;width:22px;height:22px}.home-button:focus-visible{outline-offset:3px;outline:2px solid #6b7280}.problem-score-number{font-variant-numeric:tabular-nums;font-size:72px;line-height:1}.problem-score-unit{font-size:20px}@media (width>=640px){.problem-score-number{font-size:84px}.problem-score-unit{font-size:24px}}.problem-equation{line-height:1.2;font-size:clamp(26px, min(12vw, calc((100vw - 52px) / var(--equation-units))), 112px);align-items:center;gap:.12em;display:flex;position:relative}.answer-display{caret-color:#0000;min-width:3ch;max-width:none;padding:0 .05em}.problem-equation .feedback-icon{font-size:48px;top:-78px}.problem-equation .feedback-delta{font-size:22px}.number-keypad{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:min(90vw,284px);margin-top:48px;display:grid}.keypad-button{color:#374151;cursor:pointer;touch-action:manipulation;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;background:#fff;border:1px solid #e5e7eb;border-radius:15px;justify-content:center;align-items:center;height:62px;padding:0;font-family:inherit;font-size:28px;font-weight:500;line-height:1;transition:background-color .1s,transform .1s;display:flex}.keypad-button:not(:disabled):hover{background:#f9fafb}.keypad-button:not(:disabled):active{background:#f3f4f6;transform:scale(.97)}.keypad-button:focus-visible{outline-offset:3px;outline:2px solid #6b7280}.keypad-button:disabled{opacity:.45;cursor:default}.keypad-delete{color:#6b7280;font-size:26px}.keypad-submit{background:#f3f4f6;border-color:#d1d5db;font-size:31px}.keypad-submit svg{width:30px;height:30px;margin:0;display:block}@media (width<=600px){.problem-screen{padding-bottom:176px}.problem-score{bottom:16px;right:16px}.number-keypad{margin-top:40px}}@media (height<=650px){.problem-screen{padding-top:86px;padding-bottom:176px}.problem-equation{font-size:clamp(26px, min(10vw, calc((100vw - 52px) / var(--equation-units))), 84px)}.problem-content{padding-top:6px}.number-keypad{gap:8px;margin-top:30px}.keypad-button{height:56px}.problem-equation .feedback-icon{font-size:40px;top:-66px}.problem-equation .feedback-delta{font-size:20px}}@media (prefers-reduced-motion:reduce){.keypad-button{transition:none}.keypad-button:not(:disabled):active{transform:none}}*,:before,:after,::backdrop{--tw-border-spacing-x:0;--tw-border-spacing-y:0;--tw-translate-x:0;--tw-translate-y:0;--tw-rotate:0;--tw-skew-x:0;--tw-skew-y:0;--tw-scale-x:1;--tw-scale-y:1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness:proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-color:#3b82f680;--tw-ring-offset-shadow:0 0 #0000;--tw-ring-shadow:0 0 #0000;--tw-shadow:0 0 #0000;--tw-shadow-colored:0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }*,:before,:after{box-sizing:border-box;border:0 solid #e5e7eb}:before,:after{--tw-content:""}html,:host{-webkit-text-size-adjust:100%;tab-size:4;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent;font-family:ui-sans-serif,system-ui,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;line-height:1.5}body{line-height:inherit;margin:0}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;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-feature-settings:normal;font-variation-settings:normal;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;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}button,input,optgroup,select,textarea{font-feature-settings:inherit;font-variation-settings:inherit;font-family:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:#0000;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{margin:0;padding:0;list-style:none}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder{opacity:1;color:#9ca3af}textarea::-moz-placeholder{opacity:1;color:#9ca3af}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}[hidden]:where(:not([hidden=until-found])){display:none}.pointer-events-none{pointer-events:none}.fixed{position:fixed}.relative{position:relative}.bottom-4{bottom:1rem}.left-4{left:1rem}.right-4{right:1rem}.right-5{right:1.25rem}.top-5{top:1.25rem}.z-10{z-index:10}.z-50{z-index:50}.mx-auto{margin-left:auto;margin-right:auto}.-ml-2{margin-left:-.5rem}.mb-2{margin-bottom:.5rem}.mb-3{margin-bottom:.75rem}.mb-4{margin-bottom:1rem}.mb-6{margin-bottom:1.5rem}.mb-8{margin-bottom:2rem}.mt-1{margin-top:.25rem}.mt-12{margin-top:3rem}.mt-2{margin-top:.5rem}.block{display:block}.flex{display:flex}.table{display:table}.grid{display:grid}.h-full{height:100%}.max-h-\[80vh\]{max-height:80vh}.min-h-\[100vh\]{min-height:100vh}.w-\[min\(620px\,calc\(100vw-2rem\)\)\]{width:min(620px,100vw - 2rem)}.w-full{width:100%}.min-w-\[220px\]{min-width:220px}.max-w-\[1200px\]{max-width:1200px}.max-w-\[280px\]{max-width:280px}.border-collapse{border-collapse:collapse}.cursor-pointer{cursor:pointer}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-end{align-items:flex-end}.items-center{align-items:center}.items-baseline{align-items:baseline}.justify-end{justify-content:flex-end}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-1{gap:.25rem}.gap-2{gap:.5rem}.gap-4{gap:1rem}.gap-6{gap:1.5rem}.space-x-1\.5>:not([hidden])~:not([hidden]){--tw-space-x-reverse:0;margin-right:calc(.375rem * var(--tw-space-x-reverse));margin-left:calc(.375rem * calc(1 - var(--tw-space-x-reverse)))}.space-y-2>:not([hidden])~:not([hidden]){--tw-space-y-reverse:0;margin-top:calc(.5rem * calc(1 - var(--tw-space-y-reverse)));margin-bottom:calc(.5rem * var(--tw-space-y-reverse))}.overflow-x-auto{overflow-x:auto}.overflow-y-auto{overflow-y:auto}.whitespace-nowrap{white-space:nowrap}.break-words{overflow-wrap:break-word}.rounded{border-radius:.25rem}.rounded-2xl{border-radius:1rem}.rounded-lg{border-radius:.5rem}.rounded-md{border-radius:.375rem}.border{border-width:1px}.border-b{border-bottom-width:1px}.border-t{border-top-width:1px}.border-none{border-style:none}.border-gray-200{--tw-border-opacity:1;border-color:rgb(229 231 235/var(--tw-border-opacity,1))}.border-gray-300{--tw-border-opacity:1;border-color:rgb(209 213 219/var(--tw-border-opacity,1))}.bg-gray-100{--tw-bg-opacity:1;background-color:rgb(243 244 246/var(--tw-bg-opacity,1))}.bg-gray-50\/80{background-color:#f9fafbcc}.bg-transparent{background-color:#0000}.bg-white{--tw-bg-opacity:1;background-color:rgb(255 255 255/var(--tw-bg-opacity,1))}.bg-opacity-95{--tw-bg-opacity:.95}.p-4{padding:1rem}.px-1{padding-left:.25rem;padding-right:.25rem}.px-2{padding-left:.5rem;padding-right:.5rem}.px-4{padding-left:1rem;padding-right:1rem}.px-5{padding-left:1.25rem;padding-right:1.25rem}.py-0\.5{padding-top:.125rem;padding-bottom:.125rem}.py-1{padding-top:.25rem;padding-bottom:.25rem}.py-1\.5{padding-top:.375rem;padding-bottom:.375rem}.py-10{padding-top:2.5rem;padding-bottom:2.5rem}.py-2{padding-top:.5rem;padding-bottom:.5rem}.py-3{padding-top:.75rem;padding-bottom:.75rem}.pb-1{padding-bottom:.25rem}.pr-3{padding-right:.75rem}.pt-2{padding-top:.5rem}.text-left{text-align:left}.text-center{text-align:center}.align-top{vertical-align:top}.font-mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace}.text-\[12px\]{font-size:12px}.text-\[13px\]{font-size:13px}.text-\[17px\]{font-size:17px}.text-\[20px\]{font-size:20px}.text-sm{font-size:.875rem;line-height:1.25rem}.text-xs{font-size:.75rem;line-height:1rem}.font-bold{font-weight:700}.font-medium{font-weight:500}.font-semibold{font-weight:600}.tracking-tight{letter-spacing:-.025em}.tracking-wide{letter-spacing:.025em}.text-blue-600{--tw-text-opacity:1;color:rgb(37 99 235/var(--tw-text-opacity,1))}.text-emerald-500{--tw-text-opacity:1;color:rgb(16 185 129/var(--tw-text-opacity,1))}.text-emerald-600{--tw-text-opacity:1;color:rgb(5 150 105/var(--tw-text-opacity,1))}.text-gray-400{--tw-text-opacity:1;color:rgb(156 163 175/var(--tw-text-opacity,1))}.text-gray-500{--tw-text-opacity:1;color:rgb(107 114 128/var(--tw-text-opacity,1))}.text-gray-600{--tw-text-opacity:1;color:rgb(75 85 99/var(--tw-text-opacity,1))}.text-gray-700{--tw-text-opacity:1;color:rgb(55 65 81/var(--tw-text-opacity,1))}.text-gray-800{--tw-text-opacity:1;color:rgb(31 41 55/var(--tw-text-opacity,1))}.text-green-600{--tw-text-opacity:1;color:rgb(22 163 74/var(--tw-text-opacity,1))}.text-green-700{--tw-text-opacity:1;color:rgb(21 128 61/var(--tw-text-opacity,1))}.text-orange-500{--tw-text-opacity:1;color:rgb(249 115 22/var(--tw-text-opacity,1))}.text-purple-600{--tw-text-opacity:1;color:rgb(147 51 234/var(--tw-text-opacity,1))}.text-purple-700{--tw-text-opacity:1;color:rgb(126 34 206/var(--tw-text-opacity,1))}.text-red-500{--tw-text-opacity:1;color:rgb(239 68 68/var(--tw-text-opacity,1))}.shadow-2xl{--tw-shadow:0 25px 50px -12px #00000040;--tw-shadow-colored:0 25px 50px -12px var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow,0 0 #0000), var(--tw-ring-shadow,0 0 #0000), var(--tw-shadow)}.shadow-sm{--tw-shadow:0 1px 2px 0 #0000000d;--tw-shadow-colored:0 1px 2px 0 var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow,0 0 #0000), var(--tw-ring-shadow,0 0 #0000), var(--tw-shadow)}.outline-none{outline-offset:2px;outline:2px solid #0000}.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)}.backdrop-blur-sm{--tw-backdrop-blur:blur(4px);-webkit-backdrop-filter:var(--tw-backdrop-blur) var(--tw-backdrop-brightness) var(--tw-backdrop-contrast) var(--tw-backdrop-grayscale) var(--tw-backdrop-hue-rotate) var(--tw-backdrop-invert) var(--tw-backdrop-opacity) var(--tw-backdrop-saturate) var(--tw-backdrop-sepia);backdrop-filter:var(--tw-backdrop-blur) var(--tw-backdrop-brightness) var(--tw-backdrop-contrast) var(--tw-backdrop-grayscale) var(--tw-backdrop-hue-rotate) var(--tw-backdrop-invert) var(--tw-backdrop-opacity) var(--tw-backdrop-saturate) var(--tw-backdrop-sepia)}.transition-all{transition-property:all;transition-duration:.15s;transition-timing-function:cubic-bezier(.4,0,.2,1)}.transition-colors{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke;transition-duration:.15s;transition-timing-function:cubic-bezier(.4,0,.2,1)}.hover\:border-gray-400:hover{--tw-border-opacity:1;border-color:rgb(156 163 175/var(--tw-border-opacity,1))}.hover\:bg-gray-50:hover{--tw-bg-opacity:1;background-color:rgb(249 250 251/var(--tw-bg-opacity,1))}.hover\:text-gray-600:hover{--tw-text-opacity:1;color:rgb(75 85 99/var(--tw-text-opacity,1))}.hover\:text-gray-900:hover{--tw-text-opacity:1;color:rgb(17 24 39/var(--tw-text-opacity,1))}.hover\:shadow:hover{--tw-shadow:0 1px 3px 0 #0000001a, 0 1px 2px -1px #0000001a;--tw-shadow-colored:0 1px 3px 0 var(--tw-shadow-color), 0 1px 2px -1px var(--tw-shadow-color);box-shadow:var(--tw-ring-offset-shadow,0 0 #0000), var(--tw-ring-shadow,0 0 #0000), var(--tw-shadow)}@media (width>=640px){.sm\:bottom-10{bottom:2.5rem}.sm\:right-10{right:2.5rem}.sm\:right-8{right:2rem}.sm\:top-8{top:2rem}.sm\:mb-0{margin-bottom:0}.sm\:mt-0{margin-top:0}.sm\:w-1\/4{width:25%}.sm\:flex-row{flex-direction:row}.sm\:gap-2{gap:.5rem}.sm\:gap-6{gap:1.5rem}.sm\:px-4{padding-left:1rem;padding-right:1rem}.sm\:px-5{padding-left:1.25rem;padding-right:1.25rem}.sm\:px-6{padding-left:1.5rem;padding-right:1.5rem}.sm\:px-8{padding-left:2rem;padding-right:2rem}.sm\:py-2\.5{padding-top:.625rem;padding-bottom:.625rem}.sm\:py-3\.5{padding-top:.875rem;padding-bottom:.875rem}.sm\:text-\[15px\]{font-size:15px}.sm\:text-\[19px\]{font-size:19px}.sm\:text-\[22px\]{font-size:22px}}
