@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-ext-wght-normal.BOeWTOD4.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-wght-normal.DqGufNeO.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-ext-wght-normal.DlzME5K_.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-wght-normal.CkhJZR-_.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-vietnamese-wght-normal.CBcvBZtf.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-ext-wght-normal.DO1Apj_S.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-wght-normal.Dx4kXJAl.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(data:font/woff2;base64,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)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-cyrillic-wght-normal.D73BlboJ.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-greek-wght-normal.Bw9x6K1M.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-vietnamese-wght-normal.Bt-aOZkq.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-latin-ext-wght-normal.DBQx-q_a.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-latin-wght-normal.B9CIFXIH.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-border-style:solid;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial;--tw-ease:initial}}}@layer theme{:root,:host{--font-sans:"Inter Variable", sans-serif;--font-mono:"JetBrains Mono Variable", monospace;--color-white:#fff;--spacing:.25rem;--radius-md:.375rem;--radius-lg:.5rem;--ease-out:cubic-bezier(0, 0, .2, 1);--ease-in-out:cubic-bezier(.4, 0, .2, 1);--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);--color-surface:#0b0b0f;--color-raised:#121218;--color-strong:#191920;--color-ink:#e6e6e6;--color-muted:#9898a3;--color-line:#2b2b34;--color-accent:#f9b98c;--color-success:#40c977;--color-error:#fa423e;--color-skill:#479ffa;--color-ink-soft:#bdbdc5;--color-border-strong:#474752;--color-accent-deep:#3e3a38;--color-accent-hover:#fbcba9;--color-accent-selected:#201b19;--color-accent-line:#605146;--color-error-soft:#ff9794;--color-success-border:#365a43;--color-review-border:#765c49;--color-skill-soft:#a6cfff;--color-skill-border:#3d5777;--color-success-soft:#86dfaa;--color-muted-strong:#626270;--color-muted-deep:#5d5d68;--color-list-line:#202028}}@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]){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;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!important}.collapse{visibility:collapse}.invisible{visibility:hidden}.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.sticky{position:sticky}.container{width:100%}@media (width>=40rem){.container{max-width:40rem}}@media (width>=48rem){.container{max-width:48rem}}@media (width>=64rem){.container{max-width:64rem}}@media (width>=80rem){.container{max-width:80rem}}@media (width>=96rem){.container{max-width:96rem}}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.inline-block{display:inline-block}.inline-flex{display:inline-flex}.inline-grid{display:inline-grid}.table{display:table}.w-24{width:calc(var(--spacing) * 24)}.flex-shrink{flex-shrink:1}.grow{flex-grow:1}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.resize{resize:both}.flex-wrap{flex-wrap:wrap}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.rounded{border-radius:.25rem}.rounded-lg{border-radius:var(--radius-lg)}.border{border-style:var(--tw-border-style);border-width:1px}.px-4{padding-inline:calc(var(--spacing) * 4)}.px-6{padding-inline:calc(var(--spacing) * 6)}.py-2{padding-block:calc(var(--spacing) * 2)}.py-3{padding-block:calc(var(--spacing) * 3)}.break-all{word-break:break-all}.text-white{color:var(--color-white)}.capitalize{text-transform:capitalize}.lowercase{text-transform:lowercase}.uppercase{text-transform:uppercase}.italic{font-style:italic}.underline{text-decoration-line:underline}.shadow,.shadow\/elevation{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.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,)}.grayscale{--tw-grayscale:grayscale(100%);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,)}.invert{--tw-invert:invert(100%);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,)}.backdrop-filter{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{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))}.ease-in-out{--tw-ease:var(--ease-in-out);transition-timing-function:var(--ease-in-out)}.ease-out{--tw-ease:var(--ease-out);transition-timing-function:var(--ease-out)}}:root{color-scheme:dark;font-family:var(--font-sans);color:var(--color-ink);background:var(--color-surface);font-synthesis:none;text-rendering:optimizelegibility}html{scrollbar-gutter:stable}*{box-sizing:border-box}body{background:var(--color-surface);min-height:100svh;margin:0;font-size:16px;line-height:1.65}::selection{background:var(--color-accent);color:var(--color-surface)}*{scrollbar-color:var(--color-line) var(--color-surface);scrollbar-width:thin}a{color:inherit;text-underline-offset:5px;text-decoration:none}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button:disabled{cursor:wait;opacity:.5}input{caret-color:var(--color-accent)}input::placeholder{color:var(--color-muted);opacity:1}:focus-visible{outline:2px solid var(--color-accent);outline-offset:5px}h1,h2,h3,p{margin:0}h1,h2,h3{text-wrap:balance}h1{letter-spacing:-.04em;font-size:clamp(2.1rem,3.7vw,3.5rem);font-weight:650;line-height:1.12}h2{letter-spacing:-.03em;font-size:clamp(1.4rem,2.1vw,1.85rem);font-weight:600;line-height:1.3}h3{font-size:1.04rem;font-weight:600;line-height:1.45}p{max-width:70ch}p+p{margin-top:12px}fieldset{border:0;min-width:0;margin:0;padding:0}.muted,.small-note{color:var(--color-muted)}.accent{color:var(--color-accent)}.lead{color:var(--color-ink-soft);max-width:59ch;font-size:clamp(1.05rem,1.6vw,1.2rem);line-height:1.65}.small-note{margin-top:20px;font-size:.82rem;line-height:1.7}.eyebrow,.section-label{letter-spacing:.07em;font-size:.76rem;font-weight:600;line-height:1.5;display:block}.section-label{color:var(--color-muted);letter-spacing:0;font-size:.85rem}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{background:var(--color-accent);color:var(--color-surface);z-index:100;padding:12px 20px;position:fixed;top:-100px;left:20px}.skip-link:focus{top:10px}.site-header{border-top:2px solid var(--color-accent);border-bottom:1px solid var(--color-line);justify-content:space-between;align-items:center;gap:24px;max-width:1440px;margin:auto;padding:24px 44px;display:flex}.brand{letter-spacing:-.04em;font-size:1.8rem;font-weight:750;line-height:1.1;display:inline-block}.brand>span{color:var(--color-accent)}.brand .brand-two{vertical-align:super;padding-left:1px;font-size:.72em}.site-frame{grid-template-columns:218px minmax(0,1fr);max-width:1440px;margin:auto;display:grid}.primary-nav{flex-direction:column;align-self:start;gap:8px;padding:48px 22px 40px 30px;display:flex;position:sticky;top:0}.primary-nav a{color:var(--color-muted);border-radius:6px;padding:12px 14px;font-size:.9rem;line-height:1.4;transition:color .16s,background-color .16s}.primary-nav a:hover{color:var(--color-ink);background:var(--color-raised)}.primary-nav a[aria-current=page]{color:var(--color-accent);background:var(--color-strong)}.nav-footnote{color:var(--color-muted);margin:80px 0 0 14px;font-size:.8rem;line-height:1.6}main{border-left:1px solid var(--color-line);min-width:0;padding:52px 64px 90px}main:focus{outline:none}.site-frame-home{max-width:1360px;display:block}.site-frame-home main{border:0;padding:64px 64px 72px}.site-footer{max-width:1440px;color:var(--color-muted);border-top:1px solid var(--color-line);justify-content:space-between;gap:16px;margin:auto;padding:24px 44px;font-size:.72rem;display:flex}.noscript-message{border:1px solid var(--color-accent);margin:16px auto;padding:20px}.button{text-align:center;border:1px solid #0000;border-radius:5px;justify-content:center;align-items:center;gap:24px;min-height:48px;padding:12px 21px;font-size:.9rem;font-weight:550;line-height:1.5;transition:background-color .16s,border-color .16s,color .16s;display:inline-flex}.button-primary{background:var(--color-accent);color:var(--color-surface)}.button-primary:hover{background:var(--color-accent-hover)}.button-secondary{color:var(--color-ink);border-color:var(--color-border-strong);background:0 0}.button-secondary:hover{background:var(--color-strong);border-color:var(--color-muted)}.button-quiet{color:var(--color-muted);background:0 0;padding-inline:8px}.button-quiet:hover{color:var(--color-ink)}.text-link,.back-link{align-items:center;gap:14px;min-height:44px;font-size:.88rem;display:inline-flex}.text-link{color:var(--color-accent)}.text-link:hover,.back-link:hover{text-decoration:underline}.back-link{color:var(--color-muted);margin-bottom:24px}.first-run{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);align-items:center;gap:80px;padding:42px 0 58px;display:grid}.first-run h1{font-size:clamp(2.7rem,4.4vw,4rem);line-height:1.09}.first-run h1 em{color:var(--color-accent);font-style:normal}.first-run-copy .lead{color:var(--color-ink);margin:30px 0 16px}.first-run-copy>p:not(.lead){color:var(--color-muted);max-width:42ch;font-size:.96rem}.first-run-copy>.small-note{margin-top:14px;font-size:.78rem!important}.first-cta{margin-top:30px}.first-run-preview{border:1px solid var(--color-accent-deep);background:var(--color-raised);border-radius:8px;padding:26px 30px 30px;position:relative}.first-run-preview:before{content:"";background:var(--color-accent);width:72px;height:2px;position:absolute;top:-1px;left:30px}.preview-heading{border-bottom:1px solid var(--color-line);justify-content:space-between;align-items:center;padding-bottom:20px;font-size:.83rem;display:flex}.preview-cross{font-family:var(--font-mono);color:var(--color-accent);font-size:1.5rem}.preview-price{flex-direction:column;padding:28px 0 32px;display:flex}.preview-price>span{color:var(--color-muted);font-size:.78rem}.preview-price>strong{font-family:var(--font-mono);letter-spacing:-.04em;font-size:clamp(2.2rem,3vw,3rem);font-weight:450}.preview-offers{border-block:1px solid var(--color-line);grid-template-columns:1fr 1fr;padding:22px 0;display:grid}.preview-offers>div{flex-direction:column;gap:4px;display:flex}.preview-offers>div+div{border-left:1px solid var(--color-line);padding-left:22px}.preview-offers>div>span{color:var(--color-muted);font-size:.78rem}.preview-offers strong{font-family:var(--font-mono);font-size:clamp(1.2rem,1.8vw,1.8rem);font-weight:450}.preview-offers strong>span{font-size:.75em}.preview-question{justify-content:space-between;padding-top:22px;font-size:1.25rem;display:flex}.preview-question>span{color:var(--color-accent)}.preview-note{color:var(--color-muted);font-size:.78rem}.thinking-sequence{border-top:1px solid var(--color-line);color:var(--color-muted);justify-content:space-between;align-items:center;gap:8px;padding-top:26px;font-size:.82rem;display:flex}.thinking-sequence>span[aria-hidden]{color:var(--color-muted-deep)}.home-heading{justify-content:space-between;align-items:end;gap:32px;margin-bottom:38px;display:flex}.home-heading:after{content:"O × Y = 2";color:var(--color-muted);font-family:var(--font-mono);letter-spacing:.04em;align-self:end;font-size:.72rem}.home-heading h1{font-size:clamp(2.1rem,3.5vw,3.25rem)}.featured-challenge{border:1px solid var(--color-border-strong);background:var(--color-raised);border-radius:8px;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:44px;padding:32px;display:grid;position:relative}.featured-challenge:before{content:"";background:var(--color-accent);width:2px;position:absolute;inset:18px auto 18px -1px}.featured-challenge h2{margin-top:12px}.featured-challenge p:not(.section-label){color:var(--color-ink-soft);margin-top:12px;font-size:.94rem}.featured-challenge .button{margin-top:24px}.featured-aside{border-left:1px solid var(--color-line);flex-direction:column;justify-content:center;padding-left:38px;display:flex}.formula-mark{font-family:var(--font-mono);white-space:nowrap;color:var(--color-accent);font-size:clamp(1.4rem,2.8vw,2.2rem)}.featured-aside p{color:var(--color-muted)!important;font-size:.78rem!important}.continue-learning{border-bottom:1px solid var(--color-line);justify-content:space-between;align-items:center;gap:28px;padding:32px 0;display:flex}.continue-learning h2{margin-top:6px;font-size:1.25rem}.continue-learning p{color:var(--color-muted);margin-top:4px;font-size:.86rem}.continue-learning .text-link{flex-shrink:0}.home-doors{margin-top:36px}.home-doors>h2{margin-bottom:22px;font-size:1.4rem}.action-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.action-card{border:1px solid var(--color-line);border-radius:7px;align-items:center;gap:20px;min-height:152px;padding:24px;transition:background-color .16s,border-color .16s,transform .16s;display:flex}.action-card:hover,.action-card:focus-within{border-color:var(--color-accent-line);background:var(--color-raised)}.action-card__icon-frame{border:1px solid var(--color-border-strong);width:44px;height:44px;color:var(--color-accent);background:var(--color-strong);border-radius:8px;flex:0 0 44px;place-items:center;transition:border-color .16s,background-color .16s;display:grid}.action-card:hover .action-card__icon-frame,.action-card:focus-within .action-card__icon-frame{border-color:var(--color-accent);background:var(--color-accent-deep)}.action-card__icon{flex-shrink:0;display:block}.action-card__body{flex:1;min-width:0}.action-card__title{font-size:1.04rem;font-weight:600;display:block}.action-card__description{color:var(--color-muted);margin-top:6px;font-size:.84rem;line-height:1.6;display:block}.action-card__arrow{color:var(--color-muted);flex-shrink:0}.page-heading{margin-bottom:42px}.page-heading:after{content:"";background:var(--color-accent);width:48px;height:2px;margin-top:26px;display:block}.page-heading .lead{margin-top:18px}.page-heading.compact{margin-bottom:26px}.challenge-page{max-width:820px;margin:0 auto}.challenge-page .page-heading h1{font-size:clamp(1.9rem,2.7vw,2.7rem)}.runner-meta{color:var(--color-muted);justify-content:space-between;gap:20px;margin-bottom:12px;font-size:.78rem;display:flex}.step-track{gap:5px;margin-bottom:28px;display:flex}.step-track span{background:var(--color-line);flex:1;height:2px}.step-track .is-current{background:var(--color-accent)}.challenge-context{background:var(--color-raised);border:1px solid var(--color-line);border-radius:8px;margin-bottom:34px;padding:28px}.scenario{white-space:pre-line;font-size:1.03rem;line-height:1.75}.comparison{border-top:1px solid var(--color-line);grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:20px;margin-top:22px;padding-top:20px;display:grid}.comparison-item{flex-direction:column;gap:5px;display:flex}.comparison-item .eyebrow{color:var(--color-muted);letter-spacing:0}.comparison-item>strong{font-family:var(--font-mono);font-size:1.4rem;font-weight:500}.comparison-item>.muted{font-size:.8rem}.step-panel h2{margin:10px 0 26px;font-size:clamp(1.25rem,2vw,1.65rem)}.step-panel h2:focus,.challenge-complete h2:focus,.diagnostic-results h2:focus{outline:none}.choices{flex-direction:column;gap:10px;display:flex}.choice{border:1px solid var(--color-border-strong);cursor:pointer;border-radius:5px;align-items:center;gap:16px;padding:17px 18px;font-size:.94rem;line-height:1.55;transition:background-color .16s,border-color .16s;display:flex;position:relative}.choice:hover{background:var(--color-raised);border-color:var(--color-muted)}.choice.is-selected{border-color:var(--color-accent);background:var(--color-accent-selected)}.choice:focus-within{outline:2px solid var(--color-accent);outline-offset:4px}.choice input{opacity:0;width:1px;height:1px;position:absolute}.choice-letter{font-family:var(--font-mono);color:var(--color-muted);font-size:.78rem}.choice-mark{color:var(--color-muted);flex-shrink:0;margin-left:auto}.choice.is-selected .choice-mark{color:var(--color-accent)}fieldset:disabled .choice{cursor:default}.numeric-field>label,.search-field>label,.family-filter>label{margin-bottom:10px;font-size:.88rem;display:block}.numeric-input-wrap{border:1px solid var(--color-border-strong);background:var(--color-raised);border-radius:5px;align-items:center;max-width:420px;display:flex}.numeric-input-wrap:focus-within{outline:2px solid var(--color-accent);outline-offset:4px}.numeric-input-wrap input{width:100%;min-width:0;color:var(--color-ink);font-size:1.7rem;font-family:var(--font-mono);background:0 0;border:0;outline:none;padding:15px 20px}.numeric-input-wrap>span{font-family:var(--font-mono);color:var(--color-muted);padding-right:20px}.input-help{color:var(--color-muted);max-width:56ch;margin-top:12px;font-size:.78rem}.answer-actions{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.validation-message{color:var(--color-error-soft);min-height:22px;margin:8px 0;font-size:.85rem}.hint,.feedback{border:1px solid var(--color-line);background:var(--color-raised);border-radius:5px;padding:22px}.feedback-success{border-color:var(--color-success-border)}.feedback-review{border-color:var(--color-review-border)}.hint{margin-top:18px}.hint strong{color:var(--color-accent);font-size:.88rem}.hint p{margin-top:6px;font-size:.92rem}.feedback-region{margin-top:22px}.feedback-region:empty{display:none}.feedback p{margin-top:8px;font-size:.92rem}.feedback-title{align-items:center;gap:10px;display:flex}.feedback-success .feedback-title{color:var(--color-success)}.feedback-review .feedback-title{color:var(--color-accent)}.feedback .solution{font-family:var(--font-mono);border-top:1px solid var(--color-line);margin-top:14px;padding-top:14px;font-size:.88rem}.step-next{margin-top:22px}.debug-block{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--color-raised);border:1px solid var(--color-line);box-shadow:inset 4px 0 0 var(--color-skill);border-radius:5px;margin:0 0 24px;padding:22px}.debug-block>span{color:var(--color-muted);font-family:var(--font-sans);margin-bottom:14px;font-size:.78rem;display:block}.debug-block code{font-family:var(--font-mono);font-size:.95rem;line-height:1.8}.challenge-complete{padding:12px 0 28px}.completion-symbol{border:1px solid var(--color-success);width:46px;height:46px;color:var(--color-success);border-radius:50%;justify-content:center;align-items:center;margin-bottom:24px;font-size:1.3rem;display:flex}.challenge-complete>.eyebrow{color:var(--color-muted);margin-bottom:12px}.challenge-complete h2,.diagnostic-results h2{font-size:clamp(1.75rem,2.8vw,2.5rem)}.challenge-complete .lead,.diagnostic-results .lead{margin-top:22px}.used-skills{border:1px dashed var(--color-line);margin:26px 0;padding:24px clamp(18px,3vw,32px)}.used-skills ul{color:var(--color-muted);flex-wrap:wrap;gap:10px 24px;margin-bottom:0;padding-left:20px;font-size:.92rem;display:flex}.challenge-complete>.answer-actions{margin-top:28px}.storage-notice{border:1px solid var(--color-accent);border-radius:5px;margin-bottom:24px;padding:18px;font-size:.87rem}.storage-notice strong{color:var(--color-accent)}.storage-notice p{margin-top:6px}.loading-status{color:var(--color-muted);margin-bottom:16px;font-size:.84rem}.learning-family{border-bottom:1px solid var(--color-line);align-items:start;gap:24px;padding:30px 4px;transition:background-color .16s;display:flex}.learning-family:hover{background:var(--color-raised)}.learning-family:focus-visible{outline:2px solid var(--color-accent);outline-offset:-2px}.family-index{font-family:var(--font-mono);color:var(--color-muted);padding-top:7px;font-size:.8rem}.learning-family-content{flex:1;min-width:0}.family-title-row{justify-content:space-between;align-items:center;gap:18px;margin-bottom:10px;display:flex}.learning-family-content>p{color:var(--color-muted);font-size:.94rem}.family-question{margin-top:14px;font-size:.94rem;display:block}.family-concepts{color:var(--color-muted);margin-top:16px;font-size:.76rem;display:block}.family-arrow{color:var(--color-accent);flex:none;padding-top:4px;display:block}.status{color:var(--color-muted);border:1px solid var(--color-border-strong);white-space:nowrap;border-radius:4px;padding:5px 8px;font-size:.72rem;font-weight:500;line-height:1.4}.status-developing{color:var(--color-skill-soft);border-color:var(--color-skill-border)}.status-available,.status-solid{color:var(--color-success-soft);border-color:var(--color-success-border)}.status-refresh{color:var(--color-accent);border-color:var(--color-review-border)}.family-local-status{color:var(--color-muted);flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:26px;font-size:.82rem;display:flex}.family-local-status .text-link{align-items:center;gap:8px;margin-left:auto;display:inline-flex}.concept-nav{border:1px dashed var(--color-line);flex-wrap:wrap;gap:8px 24px;margin-bottom:8px;padding:18px clamp(18px,3vw,32px);display:flex}.concept-nav a{color:var(--color-muted);align-items:center;min-height:44px;font-size:.8rem;display:flex}.concept-nav a:hover{color:var(--color-accent);text-decoration:underline}.microconcept{border-bottom:1px solid var(--color-line);padding:36px 0;scroll-margin-top:30px}.microconcept-header{align-items:start;gap:18px;display:flex}.microconcept-index{color:var(--color-accent);font-family:var(--font-mono);flex:none;padding-top:7px;font-size:.76rem}.microconcept-header h2{margin-bottom:8px}.concept-idea{max-width:70ch;color:var(--color-ink-soft);margin-top:20px;font-size:1rem}.microconcept h2{margin-bottom:16px}.microconcept>p{margin-top:12px;font-size:1rem}.concept-description{color:var(--color-muted)}.concept-example{border:1px solid var(--color-line);background:var(--color-raised);border-radius:5px;margin:24px 0;padding:20px 24px}.concept-example>span,.example-label{color:var(--color-muted);font-size:.78rem}.concept-example>p{font-family:var(--font-mono);margin-top:10px;font-size:.92rem;line-height:1.9}.related-challenges{margin-top:42px}.related-challenges h2{margin-bottom:20px;font-size:1.4rem}.challenge-links>astro-island{display:block}.challenge-links .challenge-link{border-bottom:1px solid var(--color-line);grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:24px;padding:18px 0;display:grid}.challenge-link__body{flex-direction:column;gap:4px;min-width:0;display:flex}.challenge-link__body strong{font-size:.95rem;font-weight:500;display:block}.challenge-link__body>span{color:var(--color-muted);font-size:.78rem;display:block}.challenge-link__arrow{color:var(--color-muted);flex:none;display:block}.challenge-link:hover strong,.challenge-link:focus-visible strong,.challenge-link:hover .challenge-link__arrow,.challenge-link:focus-visible .challenge-link__arrow{color:var(--color-accent)}.recall-controls{align-items:end;gap:24px;display:flex}.search-field{flex:1;min-width:0}.search-field>div{border:1px solid var(--color-muted-strong);background:var(--color-raised);border-radius:5px;align-items:center;display:flex}.search-field .search-icon{color:var(--color-muted);flex-shrink:0;margin-left:14px}.search-field input{color:var(--color-ink);background:0 0;border:0;width:100%;min-width:0;padding:14px 12px;font-size:.88rem}.search-field>div:focus-within{outline:2px solid var(--color-accent);outline-offset:4px}.search-field input:focus{outline:0}.family-filter select{color:var(--color-ink);background:var(--color-raised);border:1px solid var(--color-muted-strong);border-radius:5px;min-height:53px;padding:12px;font-size:.84rem}.result-count{color:var(--color-muted);margin:22px 0;font-size:.78rem}.recall-card summary{justify-content:space-between;align-items:center;gap:24px;padding:22px 4px;list-style:none;display:flex}.recall-card summary::-webkit-details-marker{display:none}.recall-card summary .eyebrow{color:var(--color-muted);letter-spacing:0;margin-bottom:6px;font-size:.71rem}.recall-card summary strong{font-size:1.04rem;font-weight:500}.details-plus{color:var(--color-accent);font-size:1.3rem;font-weight:300}.recall-card[open] .details-plus{transform:rotate(45deg)}.recall-body{max-width:700px;padding:0 4px 28px}.recall-body>p{font-size:.95rem}.formula{background:var(--color-raised);border:1px solid var(--color-line);font-family:var(--font-mono);overflow-wrap:anywhere;border-radius:5px;margin:22px 0;padding:20px 24px;font-size:.95rem;line-height:1.9}.recall-body .button{margin-top:22px}.empty-state{padding:38px 0}.empty-state p{color:var(--color-muted);margin:18px 0 24px}.diagnostic-line{border:1px dashed var(--color-line);align-items:center;gap:30px;margin-bottom:28px;padding:28px clamp(18px,3vw,32px);display:flex}.large-number{font-family:var(--font-mono);color:var(--color-accent);font-size:3.3rem;font-weight:400;line-height:1}.diagnostic-line p{color:var(--color-muted);font-size:.9rem}.diagnostic-line strong{color:var(--color-ink);font-weight:500}.plain-list{color:var(--color-muted);margin:24px 0 30px;padding-left:22px;font-size:.94rem}.plain-list li+li{margin-top:10px}.diagnostic-scenario-title{margin:0 0 16px;font-size:1.15rem}.diagnostic-results>.eyebrow{color:var(--color-muted);margin-bottom:12px}.diagnostic-family-list{border-top:1px solid var(--color-line);margin:34px 0}.diagnostic-family{border-bottom:1px solid var(--color-line);padding:24px 0}.diagnostic-family h3{margin-bottom:14px}.diagnostic-family p strong{font-size:.87rem;font-weight:500;display:block}.diagnostic-family p span{color:var(--color-muted);font-size:.85rem}.diagnostic-family .text-link{margin-top:8px}.data-chart{border-top:1px solid var(--color-line);margin:24px 0 0;padding-top:20px}.data-chart figcaption{font-size:.9rem;font-weight:500}.chart-axis,.chart-caption{color:var(--color-muted);margin:10px 0 16px;font-size:.72rem}.chart-row{grid-template-columns:80px minmax(0,1fr) 92px;align-items:center;gap:12px;margin-top:12px;font-size:.77rem;display:grid}.chart-track{background:var(--color-strong);height:26px}.chart-track>span{background:var(--color-skill);height:100%;display:block}.chart-row strong{font-family:var(--font-mono);font-size:.76rem;font-weight:400}.map-intro{background:var(--color-raised);border:1px solid var(--color-line);border-radius:7px;margin-bottom:28px;padding:26px}.map-intro h2{font-size:1.35rem}.map-intro p{color:var(--color-muted);margin-top:12px;font-size:.94rem}.map-intro .answer-actions{margin-top:22px}.map-legend{border-bottom:1px solid var(--color-line);align-items:center;gap:24px;margin-bottom:4px;padding-bottom:30px;display:flex}.map-legend p{color:var(--color-muted);font-size:.84rem}.map-legend strong{color:var(--color-ink);font-weight:500}.map-family{border-bottom:1px solid var(--color-line);padding:30px 0}.map-family>header{justify-content:space-between;align-items:center;gap:20px;display:flex}.map-family header .eyebrow{color:var(--color-muted);letter-spacing:0;margin-bottom:6px;font-size:.68rem}.map-family h2{font-size:1.45rem}.skill-map-list{margin:18px 0 8px;padding:0;list-style:none}.skill-map-list li{border-bottom:1px solid var(--color-list-line);align-items:center;gap:18px;padding:18px 0;display:flex}.skill-map-name{flex:1;min-width:0}.skill-map-dimensions{flex-wrap:wrap;gap:8px 18px;min-width:185px;display:flex}.skill-map-dimensions span{flex-direction:column;gap:2px;display:flex}.skill-map-dimensions small{color:var(--color-muted);letter-spacing:.04em;text-transform:uppercase;font-size:.67rem}.skill-map-dimensions strong{color:var(--color-ink-soft);font-size:.74rem;font-weight:500}.skill-map-name h3{font-size:.9rem;font-weight:500}.skill-map-name p{color:var(--color-muted);margin-top:5px;font-size:.71rem}.skill-map-name .error-pattern{color:var(--color-accent)}.skill-map-link{min-height:44px;color:var(--color-accent);align-items:center;gap:8px;font-size:.78rem;display:inline-flex}.skill-map-link:hover{text-decoration:underline}.refresh-suggestion{border-bottom:1px solid var(--color-line);justify-content:space-between;align-items:center;gap:24px;padding:24px 0;display:flex}.refresh-suggestion h2{margin-top:12px;font-size:1.15rem}.refresh-suggestion p{color:var(--color-muted);margin-top:6px;font-size:.86rem}@media (width<=1100px){.site-header,.site-footer{padding-inline:30px}.site-frame{grid-template-columns:180px minmax(0,1fr)}.primary-nav{padding-inline:16px}.primary-nav a{padding-inline:10px;font-size:.82rem}main{padding:42px 36px 70px}.site-frame-home main{padding:46px 38px 60px}.first-run{gap:36px}.first-run-preview{padding:22px}.family-title-row{flex-wrap:wrap;gap:8px}.recall-controls{flex-wrap:wrap}.search-field{flex-basis:100%}.family-filter,.family-filter select{width:100%}}@media (width<=760px){.site-header{padding:22px}.brand{font-size:1.65rem}.site-frame{display:block}.primary-nav{border-bottom:1px solid var(--color-line);flex-flow:wrap;gap:6px 8px;padding:15px 18px;display:flex;position:static}.primary-nav a{align-items:center;min-height:44px;padding:10px 11px;font-size:.77rem;display:flex}.nav-footnote{display:none}main{border-left:0;padding:34px 22px 60px}.site-frame-home main{padding:34px 22px 52px}.site-footer{flex-direction:column;gap:7px;padding:24px 22px;font-size:.68rem}.first-run{grid-template-columns:1fr;gap:34px;padding:8px 0 34px}.first-run h1{font-size:clamp(2.55rem,8.9vw,3.6rem)}.first-run-copy .lead{margin-top:24px}.first-run-copy>p:not(.lead){max-width:48ch}.first-run-preview{width:100%;max-width:500px}.preview-heading{padding-bottom:14px}.preview-price{padding:20px 0}.preview-price strong{font-size:2.5rem}.preview-offers{padding:18px 0}.preview-offers strong{font-size:1.6rem}.preview-note{font-size:.76rem}.thinking-sequence{flex-wrap:wrap;justify-content:start;gap:10px 14px;font-size:.75rem}.home-heading{flex-direction:column;align-items:start;gap:16px;margin-bottom:24px}.home-heading:after{align-self:start}.featured-challenge{grid-template-columns:1fr;gap:24px;padding:24px}.featured-aside{display:none}.continue-learning{flex-direction:column;align-items:start;gap:8px;padding:26px 0}.action-grid{grid-template-columns:1fr}.action-card{gap:16px;min-height:124px;padding:20px}.action-card__description{font-size:.85rem}.page-heading{margin-bottom:30px}.page-heading .lead{margin-top:16px}.challenge-context{margin-bottom:28px;padding:20px}.scenario{font-size:1rem}.comparison{grid-template-columns:1fr 1fr;gap:14px}.comparison-item>strong{font-size:1.15rem}.choice{gap:12px;padding:15px 14px;font-size:.95rem}.step-panel h2{margin-bottom:22px;font-size:1.35rem}.feedback{padding:18px}.feedback p{font-size:.95rem}.answer-actions{gap:12px}.answer-actions .button-primary{flex-grow:1}.step-next .button{width:100%}.numeric-input-wrap{max-width:none}.learning-family{gap:14px;padding:26px 0}.family-index{display:none}.family-title-row h2{font-size:1.5rem}.family-concepts{font-size:.76rem;line-height:1.8}.concept-nav{gap:2px 20px}.microconcept{padding:30px 0;scroll-margin-top:22px}.concept-example{padding:18px}.family-local-status{gap:10px}.family-local-status .text-link{margin-left:0}.search-field input{font-size:.84rem}.map-legend{flex-direction:column;align-items:start;gap:18px}.map-intro{padding:22px}.map-intro .button{width:100%}.skill-map-list li{grid-template-columns:minmax(0,1fr) auto;gap:6px 14px;display:grid}.skill-map-name{grid-column:1/-1}.skill-map-dimensions{grid-column:1/-1;min-width:0}.skill-map-list .status{justify-self:start}.skill-map-link{justify-self:end}.diagnostic-line{gap:20px}.chart-row{grid-template-columns:55px minmax(0,1fr) 70px;gap:8px}.chart-row strong{font-size:.67rem}.refresh-suggestion{flex-direction:column;align-items:start}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}html[data-reduced-motion=true] *,html[data-reduced-motion=true] :before,html[data-reduced-motion=true] :after{scroll-behavior:auto!important;transition:none!important;animation:none!important}.site-header-app{grid-template-columns:auto minmax(0,1fr) auto;gap:clamp(16px,2.8vw,40px);display:grid}.site-header-app .home-nav{justify-self:end;align-items:center;gap:clamp(8px,1.5vw,24px);display:flex}.nav-link{position:relative}.nav-link__icon{color:currentColor;flex:none;justify-content:center;align-items:center;display:inline-flex}.nav-link__label{min-width:0}.nav-link--top{min-height:44px;color:var(--color-muted);align-items:center;gap:7px;font-size:.74rem;transition:color .16s;display:inline-flex}.nav-link--top .nav-link__icon,.nav-link--top .nav-link__icon svg{width:18px;height:18px}.nav-link--top:hover,.nav-link--top:focus-visible,.nav-link--top[aria-current=page]{color:var(--color-ink)}.nav-link--top[aria-current=page] .nav-link__icon{color:var(--color-accent)}.primary-nav .nav-link--side{color:var(--color-muted);border-radius:6px;align-items:center;gap:10px;padding:12px 14px;font-size:.9rem;line-height:1.4;transition:color .16s,background-color .16s;display:flex}.primary-nav .nav-link--side .nav-link__icon,.primary-nav .nav-link--side .nav-link__icon svg{width:20px;height:20px}.primary-nav .nav-link--side:hover{color:var(--color-ink);background:var(--color-raised)}.primary-nav .nav-link--side[aria-current=page]{color:var(--color-accent);background:var(--color-strong)}.site-frame{max-width:1440px;display:block}.site-frame main{border-left:0;padding:clamp(3rem,6vh,5.5rem) clamp(28px,5vw,80px) 96px}.site-frame-home{max-width:1440px}.site-frame-home main{padding:clamp(3rem,6vh,5.5rem) clamp(28px,5vw,80px) 96px}.home-hero{border-bottom:1px solid var(--color-line);grid-template-columns:minmax(0,1fr) minmax(360px,.9fr);align-items:center;gap:clamp(36px,4.5vw,76px);max-width:1280px;margin:0 auto;padding:0 0 clamp(54px,6vw,80px);display:grid}.home-hero--first-run,.home-hero--returning{min-height:0}.home-hero__copy{min-width:0}.home-eyebrow{color:var(--color-muted);letter-spacing:.08em;font-size:.68rem;font-weight:650;line-height:1.5;display:block}.home-hero h1{letter-spacing:-.06em;max-width:12.5ch;margin-top:18px;font-size:clamp(2.85rem,4.8vw,4.7rem);font-weight:650;line-height:.94}.home-hero h1 em{color:var(--color-ink);font-style:normal}.home-hero .lead{max-width:43ch;margin-top:24px;font-size:clamp(1rem,1.45vw,1.16rem);line-height:1.5}.home-hero__support{max-width:45ch;color:var(--color-muted);margin-top:12px;font-size:.9rem}.home-hero__actions{flex-wrap:wrap;align-items:center;gap:16px 24px;margin-top:24px;display:flex}.home-hero__actions .button{min-height:52px;padding-inline:22px}.home-hero__copy>.small-note{margin-top:12px;font-size:.74rem}.home-text-action{min-height:44px;color:var(--color-accent);align-items:center;gap:12px;font-size:.84rem;display:inline-flex}.home-text-action:hover{text-decoration:underline}.math-instrument{border-block:1px solid var(--color-line);min-width:0;padding:16px 0 18px;position:relative}.math-instrument:before,.math-instrument:after{content:"";background:var(--color-accent);width:42px;height:2px;position:absolute}.math-instrument:before{top:-1px;left:0}.math-instrument:after{bottom:-1px;right:0}.math-instrument__header,.math-instrument__comparison>div{justify-content:space-between;align-items:center;gap:16px;display:flex}.math-instrument__header{color:var(--color-muted);letter-spacing:.06em;text-transform:uppercase;font-size:.7rem;font-weight:650}.math-instrument__header-index{color:var(--color-muted-strong);font-family:var(--font-mono);font-size:.66rem;font-weight:400}.math-instrument__steps{border-top:1px solid var(--color-line);grid-template-columns:repeat(2,minmax(0,1fr));margin-top:28px;display:grid}.math-step{border-bottom:1px solid var(--color-line);grid-template-columns:24px minmax(0,1fr);gap:12px;min-height:112px;padding:14px 16px 16px 0;display:grid;position:relative}.math-step:nth-child(2n){border-left:1px solid var(--color-line);padding-left:16px}.math-step:after{content:"";background:var(--color-accent);width:8px;height:2px;position:absolute;bottom:-1px;left:0}.math-step:nth-child(2n):after{left:16px}.math-step__index{color:var(--color-muted-strong);font-family:var(--font-mono);font-size:.66rem;line-height:1.5}.math-step__label{color:var(--color-muted);letter-spacing:.07em;text-transform:uppercase;font-size:.66rem;font-weight:650;line-height:1.5;display:block}.math-step strong{color:var(--color-ink);font-family:var(--font-mono);letter-spacing:-.07em;margin-top:8px;font-size:clamp(1.45rem,2.8vw,2.4rem);font-weight:420;line-height:1;display:block}.math-step small{color:var(--color-muted);margin-top:6px;font-size:.72rem;display:block}.math-step--relation strong{font-size:clamp(1.8rem,3.4vw,2.8rem)}.math-step--operation strong,.math-step--result strong{color:var(--color-accent)}.math-step--operation strong{letter-spacing:-.04em;font-size:clamp(.9rem,1.55vw,1.24rem)}.math-instrument__comparison{border-top:1px solid var(--color-line);margin-top:16px;padding-top:12px}.math-instrument__comparison>header{color:var(--color-accent);letter-spacing:.08em;text-transform:uppercase;justify-content:space-between;gap:16px;font-size:.68rem;font-weight:650;display:flex}.math-instrument__comparison>div{min-height:32px;color:var(--color-muted);font-size:.78rem}.math-instrument__comparison>div:first-of-type{margin-top:8px}.math-instrument__comparison strong{color:var(--color-ink);font-family:var(--font-mono);font-size:.88rem;font-weight:400}.math-instrument__comparison b{min-width:20px;color:var(--color-accent);font-family:var(--font-mono);font-weight:400;display:inline-block}.math-instrument__comparison .math-instrument__difference{border-top:1px solid var(--color-line);margin-top:8px;padding-top:10px}.math-instrument__difference span,.math-instrument__difference strong{color:var(--color-accent)}.math-instrument__difference>span{align-items:center;gap:10px;display:inline-flex}.math-instrument__difference-icon{flex:none;display:block}.math-instrument__note{color:var(--color-muted);margin-top:16px;font-size:.78rem}.home-method{grid-template-columns:minmax(220px,.75fr) minmax(0,1.25fr);align-items:start;gap:60px;max-width:1240px;margin:0 auto;padding:38px 0 0;display:grid}.home-method__intro h2{margin-top:12px;font-size:1.42rem}.home-method__steps{border-top:1px solid var(--color-line);grid-template-columns:repeat(5,minmax(0,1fr));display:grid}.home-method__steps span{border-right:1px solid var(--color-line);min-height:70px;color:var(--color-muted);font-family:var(--font-mono);padding:14px 12px 0 0;font-size:.68rem}.home-method__steps span+span{padding-left:12px}.home-method__steps span:last-child{border-right:0}.home-focus{border-bottom:1px solid var(--color-line);grid-template-columns:56px minmax(0,1fr) minmax(160px,.35fr);align-items:start;gap:30px;max-width:1240px;margin:0 auto;padding:62px 0 58px;display:grid}.home-focus__marker{color:var(--color-accent);font-family:var(--font-mono);padding-top:6px;font-size:.78rem}.home-focus__body h2{margin-top:12px;font-size:clamp(1.7rem,3vw,2.65rem)}.home-focus__body p{max-width:58ch;color:var(--color-muted);margin-top:14px;font-size:.92rem}.home-focus__body .button{margin-top:24px}.home-focus__aside{border-left:1px solid var(--color-line);color:var(--color-muted);align-self:center;padding-left:26px;font-size:.78rem}.home-focus__aside strong{color:var(--color-accent);font-family:var(--font-mono);margin-top:4px;font-size:1rem;font-weight:400;display:block}.home-continue{border:1px dashed var(--color-line);justify-content:space-between;align-items:center;gap:32px;max-width:1240px;margin:0 auto;padding:32px clamp(18px,3vw,32px) 38px;display:flex}.home-continue h2{margin-top:8px;font-size:1.36rem}.home-continue p{color:var(--color-muted);margin-top:5px;font-size:.84rem}.home-continue .home-text-action{flex-shrink:0}.home-doors{max-width:1240px;margin:0 auto;padding-top:62px}.home-doors__header{border-bottom:1px solid var(--color-line);justify-content:space-between;align-items:end;gap:24px;padding-bottom:20px;display:flex}.home-doors__header h2{margin-top:10px;font-size:clamp(1.6rem,2.8vw,2.2rem)}.home-doors__index{color:var(--color-muted);font-family:var(--font-mono);font-size:.7rem}.action-grid{grid-template-columns:repeat(12,minmax(0,1fr));gap:14px 18px;padding-top:14px;display:grid}.action-card{border-radius:0;min-height:0;transform:none}.action-card--wide{border:1px solid var(--color-border-strong);background:var(--color-raised);grid-area:span 2/span 7;align-items:end;min-height:250px;padding:34px}.action-card--compact{border:1px dashed var(--color-line);grid-column:span 5;min-height:118px;padding:24px clamp(18px,3vw,32px) 22px}.action-card--horizontal{border:1px dashed var(--color-line);grid-column:1/-1;min-height:112px;padding:22px clamp(18px,3vw,32px)}.action-card--wide:hover,.action-card--wide:focus-within{background:var(--color-strong)}.action-card--compact:hover,.action-card--compact:focus-within,.action-card--horizontal:hover,.action-card--horizontal:focus-within{border-color:var(--color-accent-line);background:0 0}.action-card--wide .action-card__icon-frame{flex-basis:60px;width:60px;height:60px}.action-card--wide .action-card__title{font-size:1.5rem}.action-card--wide .action-card__description{max-width:35ch;font-size:.9rem}.action-card--horizontal .action-card__icon-frame,.action-card--compact .action-card__icon-frame{flex-basis:50px;width:50px;height:50px}.action-card--horizontal .action-card__title{font-size:1.16rem}.action-card__icon-frame{border-radius:50%}.action-card__arrow{transition:color .16s}.action-card:hover .action-card__arrow,.action-card:focus-within .action-card__arrow{color:var(--color-accent)}@media (width<=1100px){.site-header-app{gap:14px}.site-header-app .home-nav{gap:8px}.nav-link--top{gap:5px;font-size:.68rem}.home-hero{grid-template-columns:minmax(0,1fr) minmax(300px,.86fr);gap:32px}.home-hero h1{font-size:clamp(2.75rem,4.8vw,4rem)}.home-method{gap:34px}}@media (width<=1023px){.site-frame main,.site-frame-home main{padding:clamp(2.75rem,6vh,4rem) clamp(28px,6vw,64px) 80px}.home-hero{grid-template-columns:1fr;gap:36px}.home-hero__copy{max-width:66ch}.math-instrument{justify-self:start;width:min(100%,620px)}}@media (width<=760px){.site-header-app{grid-template-columns:1fr auto;gap:14px 18px;padding:20px 22px 0}.site-header-app .home-nav{border-top:1px solid var(--color-line);grid-column:1/-1;grid-template-columns:repeat(5,minmax(0,1fr));justify-self:stretch;gap:4px;padding:12px 0 14px;display:grid}.nav-link--top{text-align:center;flex-direction:column;justify-content:center;gap:2px;min-width:0;min-height:44px;font-size:.61rem;line-height:1.2}.nav-link--top .nav-link__icon,.nav-link--top .nav-link__icon svg{width:17px;height:17px}.site-frame main,.site-frame-home main{padding:clamp(2.5rem,6vh,3.5rem) 22px 64px}.home-hero,.home-hero--first-run,.home-hero--returning{grid-template-columns:1fr;gap:42px;min-height:0;padding:4px 0 54px}.home-hero h1{max-width:11ch;margin-top:18px;font-size:clamp(2.55rem,12vw,3.6rem)}.home-hero .lead{margin-top:26px;font-size:1.05rem}.home-hero__support{font-size:.88rem}.home-hero__actions{flex-direction:column;align-items:flex-start;gap:12px;margin-top:28px}.home-hero__actions .button{width:100%}.math-instrument__steps{margin-top:24px}.math-step{min-height:104px}.math-step strong{font-size:clamp(1.35rem,7vw,2rem)}.math-step--relation strong{font-size:clamp(1.6rem,8vw,2.4rem)}.math-step--operation strong{font-size:.88rem}.home-method{grid-template-columns:1fr;gap:28px;padding-top:34px}.home-method__steps{grid-template-columns:repeat(2,minmax(0,1fr))}.home-method__steps span:nth-child(2n){border-right:0;padding-left:12px}.home-method__steps span:nth-child(n+3){border-top:1px solid var(--color-line)}.home-focus{grid-template-columns:1fr;gap:12px;padding:44px 0}.home-focus__marker{padding-top:0}.home-focus__aside{border-top:1px solid var(--color-line);border-left:0;align-self:start;margin-top:12px;padding:12px 0 0}.home-continue{flex-direction:column;align-items:start;gap:12px;padding:28px 20px 34px}.home-continue .home-text-action{align-self:start}.home-doors{padding-top:48px}.home-doors__header{flex-direction:column;align-items:start;gap:12px}.action-grid{flex-direction:column;gap:0;padding-top:0;display:flex}.action-card--wide,.action-card--compact,.action-card--horizontal{width:100%;min-height:0}.action-card--wide{align-items:center;padding:24px 20px}.action-card--compact,.action-card--horizontal{padding:22px 0}.action-card--wide .action-card__title{font-size:1.25rem}}@media (width<=480px){.math-instrument__steps{grid-template-columns:1fr}.math-step,.math-step:nth-child(2n){border-left:0;padding-left:0}.math-step:nth-child(2n):after{left:0}}.challenge-page--runner{max-width:1280px;margin:0 auto}.challenge-page--runner .back-link{margin-bottom:28px}.challenge-page--runner .page-heading{margin-bottom:34px}.challenge-page--runner .page-heading:after{width:34px;margin-top:20px}.challenge-page--runner .page-heading h1{max-width:24ch;font-size:clamp(1.8rem,3vw,2.8rem)}.challenge-page--runner .challenge-runner{border-top:1px solid var(--color-line);grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);align-items:start;gap:clamp(42px,6vw,88px);padding-top:24px;display:grid}.challenge-page--runner .runner-main{min-width:0}.challenge-page--runner .runner-meta{min-height:22px;color:var(--color-muted);align-items:center;margin-bottom:10px;font-size:.76rem}.challenge-page--runner .runner-meta span:last-child{color:var(--color-muted-strong);font-family:var(--font-mono);font-size:.7rem}.challenge-page--runner .step-track{gap:6px;margin-bottom:34px;display:flex}.challenge-page--runner .step-track span{background:var(--color-line);flex:1;height:4px;position:relative}.challenge-page--runner .step-track span:after{content:"";background:var(--color-muted-strong);width:6px;height:4px;position:absolute;top:0;left:0}.challenge-page--runner .step-track span.is-current:after{background:var(--color-accent);width:100%}.challenge-page--runner .step-panel{min-width:0}.challenge-page--runner .step-panel__kind{color:var(--color-accent);letter-spacing:.08em;text-transform:uppercase;font-size:.7rem;font-weight:650;line-height:1.5;display:block}.challenge-page--runner .step-panel h2{max-width:26ch;margin:10px 0 0;font-size:clamp(1.55rem,2.8vw,2.25rem);line-height:1.14}.challenge-page--runner .choices{border-top:1px solid var(--color-line);gap:0}.challenge-page--runner .choice{border:0;border-bottom:1px solid var(--color-line);background:0 0;border-radius:0;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:14px;min-height:68px;padding:14px 0;font-size:.96rem;display:grid}.challenge-page--runner .choice:hover,.challenge-page--runner .choice.is-selected{border-color:var(--color-line);background:0 0}.challenge-page--runner .choice:focus-within{outline:2px solid var(--color-accent);outline-offset:5px}.challenge-page--runner .choice-index{border:1px solid var(--color-border-strong);width:28px;height:28px;color:var(--color-muted);font-family:var(--font-mono);place-items:center;font-size:.72rem;transition:border-color .16s,color .16s,background-color .16s;display:grid}.challenge-page--runner .choice.is-selected .choice-index{border-color:var(--color-accent);color:var(--color-surface);background:var(--color-accent)}.challenge-page--runner .choice-label{min-width:0}.challenge-page--runner .choice-status{min-width:48px;color:var(--color-accent);text-align:right;font-size:.68rem}.challenge-page--runner fieldset:disabled .choice{cursor:default}.challenge-page--runner .numeric-field>label{color:var(--color-muted);letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;font-size:.78rem;font-weight:650;display:block}.challenge-page--runner .numeric-input-wrap{border:0;border-bottom:1px solid var(--color-border-strong);background:0 0;border-radius:0;max-width:440px}.challenge-page--runner .numeric-input-wrap:focus-within{border-color:var(--color-accent);box-shadow:0 2px 0 var(--color-accent);outline:0}.challenge-page--runner .numeric-input-wrap input{letter-spacing:-.06em;padding:10px 0 12px;font-size:clamp(1.8rem,4vw,2.8rem)}.challenge-page--runner .numeric-input-wrap>span{color:var(--color-accent);padding:0 0 0 14px;font-size:1.05rem}.challenge-page--runner .input-help{margin-top:12px;font-size:.76rem}.challenge-page--runner .answer-actions{gap:12px 20px;margin-top:10px}.challenge-page--runner .answer-actions .button{min-height:48px}.challenge-page--runner .validation-message{min-height:22px;margin:14px 0 4px;font-size:.8rem}.challenge-page--runner .hint{border:0;border-top:1px solid var(--color-line);background:0 0;border-radius:0;margin-top:22px;padding:16px 0 0}.challenge-page--runner .hint strong{color:var(--color-accent);letter-spacing:.05em;text-transform:uppercase;font-size:.78rem}.challenge-page--runner .hint p{margin-top:6px;font-size:.88rem}.challenge-page--runner .feedback-region:empty{display:block}.challenge-page--runner .feedback{border:0;border-top:1px solid var(--color-line);background:0 0;border-radius:0;padding:18px 0 0}.challenge-page--runner .feedback-success{border-color:var(--color-success-border)}.challenge-page--runner .feedback-review{border-color:var(--color-review-border)}.challenge-page--runner .feedback-title{gap:10px}.challenge-page--runner .feedback-title>span{width:24px;height:24px;font-family:var(--font-mono);border:1px solid;place-items:center;font-size:.74rem;display:grid}.challenge-page--runner .feedback p{max-width:64ch;font-size:.9rem}.challenge-page--runner .feedback .solution{margin-top:14px;padding-top:12px}.challenge-page--runner .step-next{margin-top:0}.challenge-page--runner .debug-block{border:0;border-top:1px solid var(--color-line);border-bottom:1px solid var(--color-line);background:var(--color-raised);box-shadow:inset 2px 0 0 var(--color-error);border-radius:0;margin:0 0 28px;padding:16px 18px 18px;position:relative}.challenge-page--runner .debug-block__header{color:var(--color-muted);font-family:var(--font-sans);letter-spacing:.04em;text-transform:uppercase;justify-content:space-between;gap:16px;margin-bottom:14px;font-size:.72rem;display:flex}.challenge-page--runner .debug-block>.debug-block__header{margin-bottom:14px;display:flex}.challenge-page--runner .debug-block__header span:last-child{color:var(--color-error-soft);font-family:var(--font-mono);font-size:.66rem}.challenge-page--runner .debug-block code{color:var(--color-ink);font-size:clamp(.92rem,1.5vw,1.08rem);line-height:1.7;display:block}.challenge-page--runner .challenge-context{border:0;border-left:1px solid var(--color-line);background:0 0;border-radius:0;min-width:0;margin:0;padding:0 0 0 clamp(28px,3vw,48px)}.challenge-page--runner .challenge-context__header{border-bottom:1px solid var(--color-line);color:var(--color-muted);letter-spacing:.08em;text-transform:uppercase;padding-bottom:12px;justify-content:space-between;gap:16px;padding-inline:clamp(14px,2vw,24px);font-size:.72rem;font-weight:650;display:flex}.challenge-page--runner .challenge-context__index,.challenge-page--runner .challenge-context__focus-index{color:var(--color-muted-strong);font-family:var(--font-mono);font-size:.68rem;font-weight:400}.challenge-page--runner .challenge-context .scenario{color:var(--color-ink-soft);white-space:pre-line;margin-top:22px;font-size:.96rem;line-height:1.65}.challenge-page--runner .challenge-context__focus{border:1px dashed var(--color-line);grid-template-columns:auto minmax(0,1fr);gap:4px 16px;margin-top:28px;padding:16px clamp(18px,3vw,32px);display:grid}.challenge-page--runner .challenge-context__focus-index{grid-column:1/-1}.challenge-page--runner .challenge-context__focus strong{font-size:1.18rem;font-weight:550}.challenge-page--runner .challenge-context__focus>span:last-child{color:var(--color-accent);text-align:right;align-self:end;font-size:.76rem}.challenge-page--runner .comparison{border-top:0;grid-template-columns:1fr;gap:0;margin-top:26px;padding-top:0}.challenge-page--runner .comparison-heading{border-bottom:1px solid var(--color-line);color:var(--color-muted);letter-spacing:.07em;text-transform:uppercase;justify-content:space-between;gap:16px;padding:0 clamp(14px,2vw,24px) 9px;font-size:.68rem;font-weight:650;display:flex}.challenge-page--runner .comparison-item{border-bottom:1px solid var(--color-line);grid-template-columns:minmax(0,1fr) auto;gap:3px 12px;padding:13px clamp(14px,2vw,24px);display:grid}.challenge-page--runner .comparison-item__label{color:var(--color-muted);font-size:.82rem}.challenge-page--runner .comparison-item>strong{color:var(--color-ink);grid-area:1/2/3;align-self:center;font-size:1.3rem}.challenge-page--runner .comparison-item>.muted{grid-column:1;font-size:.72rem}.challenge-page--runner .data-chart{border-top:1px solid var(--color-line);margin-top:26px;padding-top:16px}.challenge-page--runner .data-chart figcaption{font-size:.9rem;font-weight:600}.challenge-page--runner .chart-axis,.challenge-page--runner .chart-caption{color:var(--color-muted);margin-top:7px;font-size:.72rem}.challenge-page--runner .chart-row{grid-template-columns:42px minmax(0,1fr) 76px;gap:10px;margin-top:14px}.challenge-page--runner .chart-track{background:var(--color-line);align-self:center;height:4px}.challenge-page--runner .chart-track>span{background:var(--color-skill);height:100%;display:block}.challenge-page--runner .chart-row strong{color:var(--color-ink);font-family:var(--font-mono);text-align:right;font-size:.7rem;font-weight:400}.challenge-page--runner .challenge-context__note{color:var(--color-muted);margin-top:24px;font-size:.74rem;line-height:1.6}.challenge-page--runner .challenge-complete{border-top:1px solid var(--color-line);grid-template-columns:minmax(180px,.45fr) minmax(0,1fr);gap:clamp(32px,7vw,96px);max-width:980px;margin:0 auto;padding:24px 0 36px;display:grid}.challenge-page--runner .challenge-complete>.storage-notice{grid-column:1/-1}.challenge-page--runner .challenge-complete__header{align-items:start;gap:14px;display:flex}.challenge-page--runner .completion-symbol{border-radius:0;flex:none;width:42px;height:42px;margin:0;font-size:1rem}.challenge-page--runner .challenge-complete__header .eyebrow{color:var(--color-muted)}.challenge-page--runner .challenge-complete__index{color:var(--color-muted-strong);font-family:var(--font-mono);margin-top:10px;font-size:.68rem;display:block}.challenge-page--runner .challenge-complete__body h2{max-width:22ch;font-size:clamp(1.7rem,3vw,2.6rem)}.challenge-page--runner .challenge-complete__body .lead{margin-top:20px}.challenge-page--runner .challenge-complete__body>p:not(.lead){color:var(--color-muted);font-size:.9rem}.challenge-page--runner .used-skills{border:1px dashed var(--color-line);margin:28px 0;padding:18px clamp(18px,3vw,32px)}.challenge-page--runner .used-skills h3{letter-spacing:.06em;text-transform:uppercase;font-size:.78rem;font-weight:650}.challenge-page--runner .used-skills ul{gap:8px 20px;margin-top:12px;padding-left:18px;font-size:.84rem}.challenge-page--runner .challenge-complete__body>.answer-actions{margin-top:28px}@media (width<=900px){.challenge-page--runner .challenge-runner{grid-template-columns:1fr;gap:42px}.challenge-page--runner .challenge-context{border-left:0;border-bottom:1px solid var(--color-line);grid-row:1;padding:0 0 28px}.challenge-page--runner .runner-main{grid-row:2}}@media (width<=600px){.challenge-page--runner .back-link{margin-bottom:20px}.challenge-page--runner .page-heading{margin-bottom:26px}.challenge-page--runner .challenge-runner{gap:30px;padding-top:18px}.challenge-page--runner .step-track{margin-bottom:28px}.challenge-page--runner .step-panel__header{margin-bottom:22px}.challenge-page--runner .step-panel h2{font-size:clamp(1.45rem,7vw,2rem)}.challenge-page--runner .choice{grid-template-columns:30px minmax(0,1fr);gap:12px;min-height:64px;padding:13px 0}.challenge-page--runner .choice-status{display:none}.challenge-page--runner .feedback-region{min-height:132px}.challenge-page--runner .challenge-complete{grid-template-columns:1fr;gap:24px}.challenge-page--runner .challenge-complete__header{align-items:center}.challenge-page--runner .challenge-complete__body h2{font-size:clamp(1.6rem,8vw,2.2rem)}}.challenge-page--runner .page-heading{max-width:760px}.challenge-page--runner .page-heading h1{letter-spacing:-.055em}.challenge-page--runner .runner-meta{text-transform:uppercase;letter-spacing:.08em;display:flex}.challenge-page--runner .runner-meta span:first-child{color:var(--color-accent);font-size:.68rem;font-weight:650}.challenge-page--runner .step-track{align-items:center;gap:5px;height:10px;margin-bottom:38px}.challenge-page--runner .step-track span{background:var(--color-line);height:1px}.challenge-page--runner .step-track span:after{background:var(--color-muted-deep);width:5px;height:5px;top:-2px}.challenge-page--runner .step-track span.is-current{background:var(--color-accent-deep)}.challenge-page--runner .step-track span.is-current:after{background:var(--color-accent);width:7px;height:7px;top:-3px}.challenge-page--runner .step-panel__header{margin-bottom:34px}.challenge-page--runner .step-panel__signal{flex-wrap:wrap;align-items:baseline;gap:8px 16px;display:flex}.challenge-page--runner .step-panel__kind,.challenge-page--runner .step-panel__subkind{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;font-size:.68rem;font-weight:500;line-height:1.5}.challenge-page--runner .step-panel__kind{color:var(--color-accent)}.challenge-page--runner .step-panel__subkind{color:var(--color-muted-strong)}.challenge-page--runner .step-panel__cue{max-width:44ch;color:var(--color-muted);margin-top:12px;font-size:.86rem;line-height:1.55}.challenge-page--runner .step-panel h2{max-width:25ch;margin-top:18px;font-size:clamp(1.7rem,3.1vw,2.6rem);line-height:1.1}.challenge-page--runner .choices{border-top:1px solid var(--color-line)}.challenge-page--runner .choice{min-height:76px;padding:16px 0;transition:border-color .16s,background-color .16s,box-shadow .16s}.challenge-page--runner .choice:hover,.challenge-page--runner .choice.is-selected{border-color:var(--color-line);background:var(--color-raised);box-shadow:inset 3px 0 0 var(--color-accent)}.challenge-page--runner .choice.is-selected .choice-label{color:var(--color-ink)}.challenge-page--runner .choice-index{border-radius:0}.challenge-page--runner .numeric-field__label{color:var(--color-muted);font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;align-items:baseline;gap:10px;margin-bottom:10px;font-size:.7rem;display:flex}.challenge-page--runner .numeric-field__label span{color:var(--color-muted-strong);letter-spacing:0;text-transform:none;margin-left:8px}.challenge-page--runner .numeric-input-wrap{border-bottom:1px solid var(--color-border-strong);align-items:baseline;width:min(100%,430px);max-width:none;padding:4px 0 8px;display:flex}.challenge-page--runner .numeric-input-wrap:focus-within{border-color:var(--color-accent);box-shadow:0 2px 0 var(--color-accent)}.challenge-page--runner .numeric-input-wrap__prefix,.challenge-page--runner .numeric-input-wrap__suffix{color:var(--color-accent);font-family:var(--font-mono);flex:none;padding:0;font-size:1.25rem}.challenge-page--runner .numeric-input-wrap__prefix{margin-right:8px}.challenge-page--runner .numeric-input-wrap__suffix{margin-left:8px}.challenge-page--runner .numeric-input-wrap input{flex:1;width:auto;padding:0;font-size:clamp(2rem,4.4vw,3rem)}.challenge-page--runner .input-help{max-width:54ch;margin-top:14px}.challenge-page--runner .answer-actions{margin-top:18px}.challenge-page--runner .answer-actions .button,.challenge-page--runner .step-next .button{gap:12px}.challenge-page--runner .answer-actions .button>svg,.challenge-page--runner .step-next .button>svg{flex:none;display:block}.challenge-page--runner .hint{border-top:1px solid var(--color-line);border-left:2px solid var(--color-accent);margin-top:26px;padding:15px 0 0 18px}.challenge-page--runner .hint strong{font-family:var(--font-mono);letter-spacing:.08em;font-size:.68rem}.challenge-page--runner .hint p{max-width:52ch;margin-top:7px}.challenge-page--runner .feedback-region{min-height:170px;margin-top:30px}.challenge-page--runner .feedback{border-top:1px solid var(--color-line);border-left:2px solid var(--color-muted);padding:18px 0 0 18px}.challenge-page--runner .feedback-success{border-left-color:var(--color-success)}.challenge-page--runner .feedback-review{border-left-color:var(--color-accent)}.challenge-page--runner .feedback-title>span{border-radius:0}.challenge-page--runner .debug-block{border-top:1px solid var(--color-line);border-bottom:1px solid var(--color-line);box-shadow:inset 3px 0 0 var(--color-error);margin-bottom:32px;padding:18px 20px 20px 22px}.challenge-page--runner .debug-block code{font-size:clamp(1rem,1.7vw,1.18rem);line-height:1.8}.challenge-page--runner .challenge-context{padding-left:clamp(30px,4vw,64px)}.challenge-page--runner .challenge-context__header{color:var(--color-accent);font-family:var(--font-mono);padding-bottom:14px;font-size:.68rem}.challenge-page--runner .challenge-context .scenario{max-width:42ch;margin-top:24px;font-size:1rem;line-height:1.7}.challenge-page--runner .runner-math__base{border:1px dashed var(--color-line);justify-content:space-between;align-items:end;gap:20px;margin-top:28px;padding:16px clamp(18px,3vw,32px) 18px;display:flex}.challenge-page--runner .runner-math__base span,.challenge-page--runner .runner-math__operation>span,.challenge-page--runner .runner-math__result span{color:var(--color-muted);font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;font-size:.67rem}.challenge-page--runner .runner-math__base strong{color:var(--color-ink);font-family:var(--font-mono);letter-spacing:-.06em;font-size:clamp(1.55rem,3vw,2.2rem);font-weight:450}.challenge-page--runner .comparison{margin-top:24px}.challenge-page--runner .comparison-item>strong{font-family:var(--font-mono);font-weight:450}.challenge-page--runner .runner-math__reveal{border-top:1px solid var(--color-line);border-bottom:1px solid var(--color-line);margin-top:26px}.challenge-page--runner .runner-math__operation{justify-content:space-between;align-items:baseline;gap:18px;padding:16px clamp(14px,2vw,24px);display:flex}.challenge-page--runner .runner-math__operation code{color:var(--color-accent);font-family:var(--font-mono);font-size:clamp(1rem,2vw,1.35rem)}.challenge-page--runner .runner-math__pending{color:var(--color-muted);padding:0 clamp(14px,2vw,24px) 16px;font-size:.78rem}.challenge-page--runner .runner-math__result{border-top:1px solid var(--color-line);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.challenge-page--runner .runner-math__result>div{flex-direction:column;gap:5px;padding:14px clamp(14px,2vw,24px) 16px;display:flex}.challenge-page--runner .runner-math__result>div+div{border-left:1px solid var(--color-line);padding-left:clamp(14px,2vw,24px)}.challenge-page--runner .runner-math__result strong{color:var(--color-ink);font-family:var(--font-mono);font-size:clamp(.94rem,1.8vw,1.2rem);font-weight:450}.challenge-page--runner .runner-math__result .runner-math__difference strong{color:var(--color-accent)}.challenge-page--runner .challenge-context__focus{margin-top:32px;padding:18px clamp(14px,2vw,24px)}.challenge-page--runner .challenge-context__focus strong{font-family:var(--font-mono);letter-spacing:.04em;text-transform:uppercase;font-size:.86rem}.challenge-page--runner .challenge-context__focus>span:last-child{color:var(--color-muted);font-size:.72rem}@media (width<=900px){.challenge-page--runner .challenge-context{padding-left:0}}@media (width<=600px){.challenge-page--runner .step-panel__cue{font-size:.8rem}.challenge-page--runner .step-panel h2{font-size:clamp(1.6rem,8vw,2.1rem)}.challenge-page--runner .choice{min-height:70px}.challenge-page--runner .runner-math__result>div{padding-right:10px}.challenge-page--runner .runner-math__result>div+div{padding-left:10px}}.diagnostic-page{max-width:900px}.diagnostic-page .diagnostic-page__heading{max-width:680px;margin-bottom:36px}.diagnostic-page .diagnostic-page__heading h1{font-size:clamp(2rem,3.4vw,3.15rem)}.diagnostic-page .diagnostic-page__heading .lead{max-width:56ch}.diagnostic-page .diagnostic-intro{max-width:760px}.diagnostic-page .diagnostic-line{border:1px dashed var(--color-line);grid-template-columns:auto minmax(0,1fr);align-items:center;gap:24px;margin-bottom:28px;padding:26px clamp(18px,3vw,32px);display:grid}.diagnostic-page .large-number{letter-spacing:-.08em;font-size:clamp(2.8rem,7vw,4.3rem)}.diagnostic-page .diagnostic-line p{max-width:36ch;color:var(--color-muted)}.diagnostic-page .diagnostic-line strong{color:var(--color-ink);font-weight:550}.diagnostic-page .plain-list{max-width:58ch;color:var(--color-muted);margin:26px 0 30px}.diagnostic-page .plain-list li+li{margin-top:8px}.diagnostic-page .diagnostic-intro>.button{margin-top:4px}.diagnostic-page .diagnostic-intro>.small-note{max-width:56ch;margin-top:18px}.diagnostic-page .runner-meta{max-width:760px;color:var(--color-muted);margin-bottom:14px}.diagnostic-page .runner-meta span:first-child{color:var(--color-accent);font-size:.68rem;font-weight:650}.diagnostic-page .runner-meta span:last-child{color:var(--color-muted-strong);font-family:var(--font-mono);letter-spacing:.04em;font-size:.72rem}.diagnostic-page .step-track{gap:5px;max-width:760px;height:10px;margin-bottom:36px}.diagnostic-page .step-track span{background:var(--color-line);height:1px}.diagnostic-page .step-track span:after{background:var(--color-muted-deep);width:5px;height:5px;top:-2px}.diagnostic-page .step-track span.is-current{background:var(--color-accent-deep)}.diagnostic-page .step-track span.is-current:after{background:var(--color-accent);width:7px;height:7px;top:-3px}.diagnostic-page .diagnostic-scenario-title{max-width:56ch;color:var(--color-ink);margin-bottom:20px;font-size:clamp(1.2rem,2vw,1.55rem);font-weight:550}.diagnostic-page .challenge-context{border:0;border-top:1px solid var(--color-line);background:0 0;border-radius:0;max-width:760px;margin-bottom:34px;padding:22px 0 0}.diagnostic-page .challenge-context .scenario{max-width:58ch;color:var(--color-ink-soft);font-size:1rem;line-height:1.7}.diagnostic-page .comparison{max-width:760px;margin-top:24px;padding-top:16px}.diagnostic-page .comparison-item>strong,.diagnostic-page .chart-row strong{font-family:var(--font-mono);font-weight:450}.diagnostic-page .data-chart,.diagnostic-page .step-panel{max-width:760px}.diagnostic-page .step-panel__header{margin-bottom:30px}.diagnostic-page .step-panel__kind,.diagnostic-page .step-panel__subkind{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;font-size:.68rem}.diagnostic-page .step-panel__kind{color:var(--color-accent)}.diagnostic-page .step-panel__subkind{color:var(--color-muted-strong)}.diagnostic-page .step-panel__cue{max-width:44ch;color:var(--color-muted);margin-top:11px;font-size:.84rem}.diagnostic-page .step-panel h2{max-width:27ch;margin-top:17px;font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.1}.diagnostic-page .debug-block{border:1px dashed var(--color-line);background:var(--color-raised);max-width:760px;box-shadow:inset 3px 0 0 var(--color-error);border-radius:0;margin-bottom:30px;padding:18px 20px 20px 22px}.diagnostic-page .choices{border-top:1px solid var(--color-line);max-width:760px}.diagnostic-page .choice{border:0;border-bottom:1px solid var(--color-line);background:0 0;border-radius:0;min-height:70px;padding:15px 0}.diagnostic-page .choice:hover,.diagnostic-page .choice.is-selected{border-color:var(--color-line);background:var(--color-raised);box-shadow:inset 3px 0 0 var(--color-accent)}.diagnostic-page .choice:focus-within{outline-offset:-2px}.diagnostic-page .choice-index{border-radius:0}.diagnostic-page .numeric-field__label{font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;align-items:baseline;gap:10px;margin-bottom:10px;font-size:.7rem;display:flex}.diagnostic-page .numeric-field__label span{color:var(--color-muted-strong);letter-spacing:0;text-transform:none}.diagnostic-page .numeric-input-wrap{border:0;border-bottom:1px solid var(--color-border-strong);background:0 0;border-radius:0;width:min(100%,430px);max-width:none;padding:4px 0 8px}.diagnostic-page .numeric-input-wrap:focus-within{border-color:var(--color-accent);box-shadow:0 2px 0 var(--color-accent);outline:0}.diagnostic-page .numeric-input-wrap input{padding:0;font-size:clamp(2rem,4.4vw,3rem)}.diagnostic-page .input-help{max-width:54ch;margin-top:13px}.diagnostic-page .answer-actions{margin-top:18px}.diagnostic-page .feedback-region{max-width:760px;min-height:146px;margin-top:28px}.diagnostic-page .feedback{border:0;border-top:1px solid var(--color-line);background:0 0;border-radius:0;padding:18px 0 0}.diagnostic-page .feedback-success{border-top-color:var(--color-success)}.diagnostic-page .feedback-review{border-top-color:var(--color-accent)}.diagnostic-page .feedback-neutral{border-top-color:var(--color-skill)}.diagnostic-page .feedback p{max-width:60ch;font-size:.9rem}.diagnostic-page .step-next{margin-top:0}.diagnostic-page .diagnostic-results{max-width:820px}.diagnostic-page .diagnostic-results>.eyebrow{color:var(--color-accent);font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;font-size:.68rem}.diagnostic-page .diagnostic-results h2{max-width:25ch;margin-top:12px;font-size:clamp(1.7rem,3vw,2.55rem)}.diagnostic-page .diagnostic-results .lead{max-width:58ch;margin-top:20px}.diagnostic-synthesis{border-top:1px solid var(--color-line);max-width:760px;margin:34px 0 30px}.diagnostic-synthesis__group{border-bottom:1px solid var(--color-line);grid-template-columns:minmax(150px,.5fr) minmax(0,1fr);gap:24px;padding:20px 0;display:grid}.diagnostic-synthesis__group h3{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;font-size:.78rem}.diagnostic-synthesis__group>div>p{color:var(--color-muted);margin-top:7px;font-size:.78rem;line-height:1.55}.diagnostic-synthesis__group ul{flex-wrap:wrap;align-content:start;gap:8px 20px;margin:0;padding:0;list-style:none;display:flex}.diagnostic-synthesis__group li{color:var(--color-ink-soft);font-size:.9rem}.diagnostic-synthesis__group li:before{content:"—";color:var(--color-muted-strong);font-family:var(--font-mono);margin-right:8px}.diagnostic-results>.answer-actions{margin-top:28px}@media (width<=600px){.diagnostic-page .diagnostic-line{gap:16px;padding-inline:16px}.diagnostic-page .large-number{font-size:2.8rem}.diagnostic-page .step-track{margin-bottom:28px}.diagnostic-page .step-panel h2{font-size:clamp(1.55rem,7vw,2.1rem)}.diagnostic-page .choice{min-height:66px}.diagnostic-page .feedback-region{min-height:132px}.diagnostic-synthesis__group{display:block}.diagnostic-synthesis__group ul{margin-top:16px}}.home-layout .site-header-app,.home-layout .site-frame-home,.home-layout .site-footer{max-width:1760px}.home-layout .site-header-app{grid-template-columns:auto minmax(0,1fr);padding-inline:clamp(24px,3vw,56px)}.home-layout .site-frame-home main{padding-inline:clamp(24px,3vw,56px)}.home-layout .home-hero,.home-layout .home-method,.home-layout .home-focus,.home-layout .home-continue,.home-layout .home-doors{max-width:1520px}.home-layout .home-doors__header{border-bottom:0;padding-bottom:24px}.home-layout .home-hero{border-bottom:0;gap:clamp(48px,5vw,112px)}.home-loading{border-bottom:1px solid var(--color-line);min-height:clamp(480px,60svh,700px)}.home-loading:before{content:"";background:var(--color-accent);width:44px;height:2px;display:block}.home-layout .home-hero__actions .button,.home-layout .home-text-action,.home-layout .action-card__arrow{align-items:center;display:inline-flex}.home-layout .home-hero__actions .button>svg,.home-layout .home-text-action>svg,.home-layout .action-card__arrow{flex:none;display:block}.home-layout .action-grid{border:0;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;padding-top:0}.home-layout .action-card,.home-layout .action-card--wide,.home-layout .action-card--compact,.home-layout .action-card--horizontal{border:1px dashed var(--color-line);background:0 0;border-radius:0;grid-area:auto;align-items:center;min-height:184px;padding:32px 36px;position:relative;transform:none}.home-layout .action-card:nth-child(-n+2){border-bottom:1px dashed var(--color-line)}.home-layout .action-card:nth-child(odd){border-right:1px dashed var(--color-line)}.home-layout .action-card:before{content:"";background:var(--color-accent);width:30px;height:2px;position:absolute;top:-1px;left:36px}.home-layout .action-card--wide .action-card__icon-frame,.home-layout .action-card--compact .action-card__icon-frame,.home-layout .action-card--horizontal .action-card__icon-frame{border-radius:6px;flex:0 0 52px;width:52px;height:52px}.home-layout .action-card__title,.home-layout .action-card--wide .action-card__title,.home-layout .action-card--horizontal .action-card__title{font-size:1.22rem}.home-layout .action-card--wide .action-card__description,.home-layout .action-card__description{max-width:38ch;font-size:.86rem}.home-layout .action-card:hover,.home-layout .action-card:focus-within{border-color:var(--color-line);background:0 0;transform:none}.home-layout .action-card:hover .action-card__icon-frame,.home-layout .action-card:focus-within .action-card__icon-frame{border-color:var(--color-accent);background:var(--color-accent-deep)}.home-layout .action-card:hover .action-card__arrow,.home-layout .action-card:focus-within .action-card__arrow{color:var(--color-accent)}.button>svg,.text-link>svg{flex:none;display:block}@media (width<=760px){.home-layout .site-header-app{grid-template-columns:1fr auto;padding-inline:22px}.home-layout .site-frame-home main{padding-inline:22px}.home-layout .action-grid{grid-template-columns:1fr;gap:0}.home-layout .action-card,.home-layout .action-card:nth-child(-n+2),.home-layout .action-card:nth-child(odd){border-right:1px dashed var(--color-line);border-bottom:1px dashed var(--color-line);min-height:122px}.home-layout .action-card{padding-inline:20px}.home-layout .action-card:before{left:20px}}.learning-page{max-width:1040px;margin:0 auto}.learning-page--overview .page-heading{max-width:720px;margin-bottom:38px}.learning-page--overview .page-heading h1{font-size:clamp(2.1rem,3.5vw,3.2rem)}.learning-page--overview .page-heading .lead{max-width:58ch}.learning-families{border-top:1px solid var(--color-line)}.learning-page--overview .learning-family{background:0 0;grid-template-columns:54px minmax(0,1fr) 24px;align-items:center;gap:24px;min-height:164px;padding:26px 8px 26px 0;transition:background-color .16s;display:grid}.learning-page--overview .learning-family:hover{background:var(--color-raised)}.learning-page--overview .learning-family:focus-visible{outline-offset:-2px}.learning-page--overview .family-index{color:var(--color-muted-strong);flex-direction:column;justify-content:space-between;align-self:stretch;align-items:center;padding-top:4px;display:flex}.learning-page--overview .family-index>span:first-child{font-family:var(--font-mono);font-size:.72rem}.family-index__line{background:var(--color-line);flex:1;width:1px;margin:10px 0 4px}.learning-page--overview .learning-family-content{min-width:0}.family-signal{flex-wrap:wrap;align-items:baseline;gap:8px 12px;margin-bottom:12px;display:flex}.family-signal code{color:var(--color-accent);font-family:var(--font-mono);font-size:.94rem}.family-signal span{color:var(--color-muted-strong);font-size:.72rem}.learning-page--overview .family-title-row{align-items:baseline;margin-bottom:8px}.learning-page--overview .family-title-row h2{font-size:clamp(1.25rem,2vw,1.55rem)}.learning-page--overview .learning-family-content>p{max-width:62ch;font-size:.9rem}.family-meta{color:var(--color-muted);flex-wrap:wrap;gap:8px 24px;margin-top:16px;font-size:.76rem;display:flex}.family-meta span:first-child{color:var(--color-ink-soft);font-family:var(--font-mono)}.family-meta span+span:before{content:"·";color:var(--color-muted-deep);margin-right:24px}.learning-page--overview .family-arrow{color:var(--color-muted);align-self:center;padding-top:0;transition:color .16s}.learning-page--overview .learning-family:hover .family-arrow,.learning-page--overview .learning-family:focus-visible .family-arrow{color:var(--color-accent)}.learning-page--overview>.small-note{max-width:62ch;margin-top:22px}.learning-page--family{max-width:980px}.learning-family-heading{max-width:700px}.family-heading-index{color:var(--color-accent);font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;font-size:.7rem;display:block}.learning-page--family .family-local-status{border:1px dashed var(--color-line);margin:4px 0 30px;padding:14px clamp(18px,3vw,32px)}.learning-page--family .family-local-status>span:first-child{color:var(--color-muted);font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;font-size:.7rem}.learning-page--family .family-local-status .status{margin-left:4px}.learning-page--family .concept-nav{border:1px dashed var(--color-line);grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:0;margin-bottom:0;padding-inline:clamp(18px,3vw,32px);display:grid}.learning-page--family .concept-nav a{min-height:54px;color:var(--color-muted);border-bottom:1px dashed var(--color-line);gap:10px;padding:12px 16px 12px 0;font-size:.78rem}.learning-page--family .concept-nav a:nth-child(n+4){border-bottom:0}.learning-page--family .concept-nav a span{color:var(--color-accent);font-family:var(--font-mono);font-size:.68rem}.learning-page--family .concept-nav a:hover{color:var(--color-ink);text-decoration:none}.learning-page--family .microconcept{grid-template-columns:minmax(0,1.05fr) minmax(260px,.95fr);column-gap:clamp(36px,6vw,80px);padding:42px 0;display:grid}.learning-page--family .microconcept-header{grid-area:1/1}.learning-page--family .microconcept-index{color:var(--color-accent);padding-top:5px}.learning-page--family .microconcept-title h2{margin-bottom:7px;font-size:clamp(1.25rem,2vw,1.65rem)}.learning-page--family .concept-description{font-size:.86rem}.learning-page--family .concept-state{text-align:right;flex-wrap:wrap;grid-area:1/2;justify-content:end;align-self:start;align-items:center;gap:8px 14px;display:flex}.learning-page--family .concept-state>span:not(.status){color:var(--color-muted);font-size:.72rem}.learning-page--family .concept-state>span:last-child{color:var(--color-muted-strong);font-family:var(--font-mono);font-size:.66rem}.learning-page--family .concept-idea{color:var(--color-ink-soft);grid-area:2/1;margin-top:24px;font-size:.95rem;line-height:1.7}.learning-page--family .concept-example{border:1px dashed var(--color-line);border-left:2px solid var(--color-accent);background:0 0;border-radius:0;grid-area:2/2/span 2;align-self:start;margin:0;padding:16px 20px 18px}.learning-page--family .concept-example>span{color:var(--color-muted);font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;font-size:.68rem}.learning-page--family .concept-example>p{color:var(--color-ink);margin-top:11px;font-size:.82rem;line-height:1.75}.learning-page--family .concept-practice{grid-area:3/1;justify-self:start;gap:12px;margin-top:24px}.learning-page--family .concept-practice>svg{flex:none;display:block}.concept-progress-note{max-width:62ch;margin-top:20px}.learning-page--family .related-challenges{border-top:1px solid var(--color-line);margin-top:52px;padding-top:24px}.learning-page--family .related-challenges h2{margin-bottom:12px;font-size:1.15rem}@media (width<=720px){.learning-page--overview .learning-family{grid-template-columns:34px minmax(0,1fr) 20px;gap:14px;min-height:0;padding:24px 0}.learning-page--overview .learning-family:hover{background:var(--color-raised)}.learning-page--overview .family-title-row{flex-direction:column;align-items:start;gap:8px}.learning-page--overview .family-title-row .status{align-self:start}.family-meta{gap:6px 14px}.family-meta span+span:before{margin-right:14px}.learning-page--family .concept-nav{grid-template-columns:1fr}.learning-page--family .concept-nav a,.learning-page--family .concept-nav a:nth-child(n+4){border-bottom:1px solid var(--color-line)}.learning-page--family .concept-nav a:last-child{border-bottom:0}.learning-page--family .microconcept{padding:32px 0;display:block}.learning-page--family .concept-state{text-align:left;justify-content:start;margin:18px 0 0 36px}.learning-page--family .concept-idea{margin-top:22px}.learning-page--family .concept-example{margin-top:24px}.learning-page--family .concept-practice{margin-top:22px}}.recall-page{max-width:1040px;margin:0 auto}.recall-heading{max-width:700px;margin-bottom:34px}.recall-heading__index{color:var(--color-accent);font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;font-size:.7rem;display:block}.recall-heading h1{font-size:clamp(2.1rem,3.5vw,3.2rem)}.recall-search{max-width:760px;padding:22px 0 28px}.recall-search>label{color:var(--color-ink);font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;margin-bottom:12px;font-size:.72rem;display:block}.search-field__input{align-items:center;display:flex}.search-field__input .search-icon{color:var(--color-accent);flex:none;margin:0 14px 0 0}.search-field__input input{width:100%;min-width:0;color:var(--color-ink);background:0 0;border:0;padding:10px 0 12px;font-size:clamp(1.15rem,2vw,1.45rem)}.search-field__input input::placeholder{color:var(--color-muted-strong)}.recall-search>p{color:var(--color-muted);margin-top:12px;font-size:.78rem}.recall-list-heading{border-bottom:1px solid var(--color-line);color:var(--color-accent);font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;justify-content:space-between;align-items:baseline;gap:20px;margin-top:34px;padding-bottom:12px;font-size:.7rem;display:flex}.recall-list-heading .result-count{color:var(--color-muted);font-family:var(--font-mono);letter-spacing:0;text-transform:none;margin:0;font-size:.66rem}.recall-list{border-top:0}.recall-card{border-bottom:1px solid var(--color-line)}.recall-card summary{grid-template-columns:42px minmax(0,1fr) 20px;align-items:center;gap:18px;min-height:82px;padding:18px 0;transition:background-color .16s,padding .16s;display:grid}.recall-card summary:hover,.recall-card summary:focus-visible{background:var(--color-raised)}.recall-card summary:focus-visible{outline-offset:-2px}.recall-card__index{color:var(--color-accent);font-family:var(--font-mono);align-self:start;padding-top:4px;font-size:.7rem}.recall-card summary .eyebrow{color:var(--color-muted);font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;margin-bottom:5px;font-size:.66rem}.recall-card summary strong{font-size:1rem;font-weight:550;display:block}.recall-card summary:hover strong{color:var(--color-ink)}.details-plus{font-family:var(--font-mono);font-size:1rem;font-weight:400}.recall-card[open] .details-plus{color:var(--color-accent)}.recall-body{grid-template-columns:minmax(0,1fr) minmax(280px,.85fr);gap:clamp(30px,6vw,76px);max-width:940px;padding:4px 0 30px 60px;display:grid}.recall-body__idea{align-self:start;padding-top:8px}.recall-label{color:var(--color-muted);font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;font-size:.66rem;display:block}.recall-body__idea>p{color:var(--color-ink-soft);margin-top:12px;font-size:.92rem;line-height:1.7}.recall-body__math{border-left:2px solid var(--color-accent);align-self:start;padding-left:20px}.recall-body .formula{border:0;border-bottom:1px solid var(--color-line);background:0 0;border-radius:0;margin:0;padding:0 0 16px;display:block}.recall-body .formula code{color:var(--color-accent);font-family:var(--font-mono);overflow-wrap:anywhere;margin-top:11px;font-size:.86rem;line-height:1.75;display:block}.recall-example{padding-top:16px}.recall-example>p{color:var(--color-ink);font-family:var(--font-mono);margin-top:11px;font-size:.8rem;line-height:1.75}.recall-body__math .button{gap:12px;margin-top:22px}.recall-body__math .button>svg{flex:none;display:block}.recall-page .empty-state{border-bottom:1px solid var(--color-line);max-width:600px;padding:34px 0}.recall-page .empty-state h2{font-size:1.35rem}.recall-page .empty-state p{margin:12px 0 22px}@media (width<=760px){.recall-page .recall-heading{margin-bottom:26px}.recall-list-heading{margin-top:26px}.recall-card summary{grid-template-columns:30px minmax(0,1fr) 18px;gap:12px;min-height:76px}.recall-card summary:hover,.recall-card summary:focus-visible{background:var(--color-raised)}.recall-body{padding:0 0 26px 42px;display:block}.recall-body__math{margin-top:24px}}.site-header-app,.site-frame,.site-footer{max-width:1760px}.site-header-app{grid-template-columns:auto minmax(0,1fr);gap:clamp(16px,2.8vw,40px);padding-inline:clamp(24px,3vw,56px)}.site-frame{display:block}.site-frame main,.site-frame-home main{border-left:0;padding-inline:clamp(24px,3vw,56px)}.site-frame:not(.site-frame-home) main>.challenge-page--runner,.site-frame:not(.site-frame-home) main>.learning-page,.site-frame:not(.site-frame-home) main>.recall-page{max-width:none;margin-inline:0}.site-frame:not(.site-frame-home) .recall-search,.site-frame:not(.site-frame-home) .diagnostic-page .diagnostic-intro,.site-frame:not(.site-frame-home) .diagnostic-page .runner-meta,.site-frame:not(.site-frame-home) .diagnostic-page .step-track,.site-frame:not(.site-frame-home) .diagnostic-page .challenge-context,.site-frame:not(.site-frame-home) .diagnostic-page .comparison,.site-frame:not(.site-frame-home) .diagnostic-page .data-chart,.site-frame:not(.site-frame-home) .diagnostic-page .step-panel{max-width:none}@media (width<=760px){.site-header-app{grid-template-columns:1fr auto;gap:14px 18px;padding:20px 22px 0}.site-header-app .home-nav{border-top:1px solid var(--color-line);grid-column:1/-1;grid-template-columns:repeat(5,minmax(0,1fr));justify-self:stretch;gap:4px;padding:12px 0 14px;display:grid}.site-frame main,.site-frame-home main{padding-inline:22px}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}.astro-route-announcer{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;top:0;left:0;overflow:hidden}
