/*! tailwindcss v4.3.3 | MIT License | https://tailwindcss.com */
@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-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}}}@layer theme{:root,:host{--font-sans:"Inter Variable", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-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}html{scroll-behavior:smooth;scroll-padding-top:25px}body{background:var(--page);color:var(--text);margin:0;font-weight:500}button,select,input{font:inherit}button,a,select,summary,input[type=range]{-webkit-tap-highlight-color:transparent}button,select,summary{cursor:pointer}button,a,select,input,summary,[tabindex]{outline-offset:4px}:focus-visible{outline:2px solid #0071e3}button{touch-action:manipulation}button:disabled{cursor:not-allowed;opacity:.45}a{text-decoration:none}button,a{transition:background-color .18s,color .18s,border-color .18s}svg{flex-shrink:0}[hidden]{display:none!important}::selection{color:#1d1d1f;background:#cce4ff}}@layer components{.primary-button{color:#fff;background:#06c;border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:10px;padding:12px 22px;font-size:14px;font-weight:550;display:inline-flex}.primary-button:hover{background:#0071e3}.secondary-button{border:1px solid var(--line);background:var(--surface);border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px 14px;font-size:12px;display:inline-flex}.secondary-button:not(:disabled):hover{background:var(--blue-wash);border-color:var(--blue);color:var(--blue)}.icon-button{width:36px;height:36px;color:var(--muted);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.icon-button:hover{color:var(--blue);background:var(--blue-wash)}.text-link{color:var(--blue);justify-content:space-between;align-items:center;gap:14px;font-size:14px;font-weight:550;display:inline-flex}.text-link:hover{text-underline-offset:4px;text-decoration:underline}.calibration-section{margin-top:72px}.section-heading{justify-content:space-between;align-items:flex-end;gap:25px;margin-bottom:30px;display:flex}.section-heading h2,.how-section h2{letter-spacing:-1.8px;font-size:clamp(32px,3.1vw,44px);font-weight:600;line-height:1.1}.section-heading .eyebrow{margin-bottom:15px}.section-heading>p{color:var(--muted);padding-bottom:3px;font-size:14px;line-height:1.8}.method-card{border:1px solid var(--line);background:var(--surface);border-radius:16px;transition:border-color .2s;overflow:hidden}.method-card:hover{border-color:var(--blue)}@supports (color:color-mix(in lab, red, red)){.method-card:hover{border-color:color-mix(in srgb, var(--blue) 50%, var(--line))}}.method-visual{background:var(--blue-wash)}@supports (color:color-mix(in lab, red, red)){.method-visual{background:color-mix(in srgb, var(--blue-wash) 65%, var(--surface))}}.method-visual{justify-content:center;align-items:center;height:178px;display:flex}.method-visual svg{width:260px;max-width:100%;height:158px}.visual-diagonal{background:var(--surface-muted)}.visual-card{background:var(--blue-wash)}.method-content{padding:25px}.method-top{color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:12px;font-size:10px;display:flex}.method-tag{color:var(--blue);background:var(--blue-wash);border-radius:5px;padding:4px 7px;font-size:10px}.method-card h3{letter-spacing:-.8px;margin-bottom:12px;font-size:23px;font-weight:550;line-height:1.2}.method-content>p{color:var(--muted);min-height:47px;font-size:13px;line-height:1.8}.method-content>button{border-top:1px solid var(--line);width:100%;margin-top:24px;padding-top:18px;font-size:12px}.calibration-footnote{text-align:center;color:var(--muted);margin-top:20px;font-size:11px;line-height:1.7}.how-section{color:#f5f5f7;background:#1d1d1f;border-radius:20px;grid-template-columns:1fr 1fr;gap:90px;margin-top:85px;padding:60px;display:grid}.how-section .eyebrow{color:#aaaab2;margin-bottom:22px}.how-section>div>p:not(.eyebrow){color:#b0b0b9;margin-top:21px;font-size:14px;line-height:1.8}.how-section .primary-button{margin-top:28px;font-size:13px}.steps{flex-direction:column;justify-content:center;gap:29px;display:flex}.steps li{gap:20px;display:flex}.steps li>span{border:1px solid #505056;border-radius:50%;flex-shrink:0;place-items:center;width:32px;height:32px;font-size:12px;display:grid}.steps h3{letter-spacing:-.4px;margin-bottom:7px;font-size:18px;font-weight:500}.steps p{color:#b0b0b9;font-size:13px;line-height:1.8}.utility-section{grid-template-columns:1fr;gap:24px;padding:50px 0;display:grid}.history-panel,.shortcuts-panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px}.history-panel h2{letter-spacing:-.7px;margin:12px 0;font-size:23px;font-weight:550}.history-panel>p:not(.eyebrow){color:var(--muted);font-size:13px;line-height:1.7}#history-list{flex-wrap:wrap;gap:7px;margin-block:17px;display:flex}#history-list li{background:var(--blue-wash);color:var(--blue);font-variant-numeric:tabular-nums;border-radius:6px;padding:8px 11px;font-size:12px}.shortcuts-panel h3{margin-bottom:20px;font-size:16px;font-weight:550}.shortcuts-panel p{color:var(--muted);align-items:center;gap:14px;margin-top:10px;font-size:12px;display:flex}.shortcuts-panel kbd{min-width:65px;padding:4px 7px}.fine-print{color:var(--muted);line-height:1.7;font-size:11px!important}#questions{border-top:1px solid var(--line);grid-template-columns:.9fr 1.1fr;gap:70px;padding:50px 0 80px;display:grid}#questions .section-heading{display:block}#questions .section-heading .eyebrow{margin-top:23px;font-size:10px;display:block}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{justify-content:space-between;align-items:center;gap:20px;padding:23px 0;font-size:14px;list-style:none;display:flex}.faq-list details:first-child summary{padding-top:4px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";color:var(--muted);font-size:20px;font-weight:300}.faq-list details[open] summary:after{content:"−"}.faq-list details p{color:var(--muted);padding:0 15px 22px 0;font-size:13px;line-height:1.8}dialog{border:1px solid var(--line);background:var(--surface);width:min(650px,100vw - 32px);max-height:calc(100dvh - 40px);color:var(--text);border-radius:20px;margin:auto;padding:32px}dialog::backdrop{backdrop-filter:blur(6px);background:#14141b80}.dialog-heading{justify-content:space-between;align-items:flex-start;gap:20px;display:flex}.dialog-heading .eyebrow{margin-bottom:10px;font-size:9px}.dialog-heading h2{letter-spacing:-1.2px;font-size:31px;font-weight:600}.dialog-intro{color:var(--muted);margin-top:10px;font-size:14px}.calibration-tabs{gap:7px;margin:26px 0}.calibration-tabs button{border:1px solid var(--line);border-radius:9px;justify-content:center;align-items:center;gap:7px;padding:13px 5px;font-size:11px;display:flex}.calibration-tabs button[aria-pressed=true]{color:var(--blue);border-color:var(--blue);background:var(--blue-wash)}[data-panel] h3{letter-spacing:-.5px;margin-bottom:11px;font-size:20px;font-weight:550}[data-panel] p{color:var(--muted);margin-bottom:15px;font-size:13px;line-height:1.8}[data-panel] label{font-size:12px;font-weight:500}.calibration-illustration{background:var(--blue-wash);color:var(--blue);border-radius:12px;place-items:center;margin-bottom:22px;padding:28px;display:grid}#device-info{font-size:11px}.diagonal-input{color:var(--muted);align-items:center;gap:12px;margin:10px 0 17px;font-size:12px;display:flex}.diagonal-input input{border:1px solid var(--line);background:var(--surface-muted);width:140px;color:var(--text);border-radius:8px;padding:12px;font-size:17px}.reference-card-space{justify-content:center;padding:15px 0 25px;display:flex}#reference-card{aspect-ratio:85.6/53.98;border:2px solid var(--blue);background:var(--blue-wash);width:324px;color:var(--blue);border-radius:12px;flex-direction:column;flex-shrink:0;justify-content:center;align-items:flex-start;padding:15px;display:flex}#reference-card>span{letter-spacing:1px;margin-top:12px;font-size:clamp(7px,1.5vw,10px)}#reference-card strong{letter-spacing:-1px;margin-top:7px;font-size:clamp(18px,3vw,30px);font-weight:500}#reference-card small{margin-top:4px;font-size:9px}.range-label{justify-content:space-between;align-items:center;display:flex}#card-width{accent-color:#06c;width:100%;margin:15px 0;display:block}#card-width-value{color:var(--muted);font-size:11px;font-weight:400}#calibration-error{color:#b42318;margin-top:12px;font-size:12px;line-height:1.6}#apply-calibration{width:100%;margin-top:12px}#save-note{text-align:center;margin-top:12px}.announcement{z-index:50;border:1px solid var(--line);background:var(--surface);width:max-content;max-width:calc(100vw - 30px);color:var(--text);pointer-events:none;border-radius:9px;padding:11px 17px;font-size:12px;position:fixed;bottom:18px;left:50%;transform:translate(-50%)}.announcement:empty{display:none}}@layer utilities{.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}.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}}.m-4{margin:calc(var(--spacing) * 4)}.grid{display:grid}.hidden{display:none}.flex-shrink{flex-shrink: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}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.flex-wrap{flex-wrap:wrap}.gap-5{gap:calc(var(--spacing) * 5)}.rounded{border-radius:.25rem}.border{border-style:var(--tw-border-style);border-width:1px}.bg-\[var\(--page\)\]{background-color:var(--page)}.font-sans{font-family:var(--font-sans)}.text-\[var\(--text\)\]{color:var(--text)}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.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,)}.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))}@media (width>=48rem){.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}}}:root{--toolbar-height:76px}#ruler-tool{--ruler-left:42px;--ruler-top:42px;--ruler-right:0px;--ruler-bottom:0px;min-height:100dvh}body{overflow:hidden}.skip-link{z-index:100;background:var(--surface);border:2px solid var(--blue);border-radius:8px;padding:10px 20px;position:fixed;top:12px;left:12px;transform:translateY(-150%)}.skip-link:focus{transform:translateY(0)}.app-toolbar{z-index:30;background:var(--surface);border-bottom:1px solid var(--line);align-items:center;gap:22px;min-height:76px;padding:13px 24px;display:flex;position:fixed;inset:0 0 auto}.toolbar-brand-area{flex-shrink:0;align-items:center;gap:24px;display:flex}.brand{letter-spacing:-.55px;color:var(--text);white-space:nowrap;align-items:center;gap:9px;font-size:17px;font-weight:650;display:inline-flex}.brand-mark{color:#fff;background:#06c;border-radius:9px;place-items:center;width:33px;height:33px;display:grid}.brand-dot{color:var(--blue)}.explore-menu{position:relative}.explore-menu summary{border:1px solid var(--line);border-radius:8px;align-items:center;gap:8px;padding:9px 11px;font-size:12px;list-style:none;display:flex}.explore-menu summary::-webkit-details-marker{display:none}.explore-menu summary:hover,.explore-menu[open] summary{background:var(--blue-wash);border-color:var(--blue)}@supports (color:color-mix(in lab, red, red)){.explore-menu summary:hover,.explore-menu[open] summary{border-color:color-mix(in srgb, var(--blue) 25%, var(--line))}}.menu-chevron{color:var(--muted);margin-left:7px;font-size:16px;line-height:1}.explore-menu nav{border:1px solid var(--line);background:var(--surface);border-radius:12px;width:248px;padding:7px;position:absolute;top:calc(100% + 13px);left:0}.explore-menu a{color:var(--text);border-radius:6px;justify-content:space-between;align-items:center;padding:13px 12px;font-size:12px;display:flex}.explore-menu a:hover{background:var(--blue-wash);color:var(--blue)}.explore-menu a span{color:var(--blue)}.toolbar-controls{align-items:center;gap:19px;min-width:0;margin-left:auto;display:flex}.calibration-control{flex-shrink:0}.calibration-trigger{border:1px solid var(--line);white-space:nowrap;background:var(--surface);border-radius:8px;align-items:center;gap:8px;padding:10px 12px;font-size:12px;display:flex}.calibration-trigger:hover{border-color:var(--blue);background:var(--blue-wash)}.calibration-trigger svg{color:var(--blue)}#toolbar-scale{color:var(--muted);margin-left:3px;font-size:10px}#calibration-status .status-dot{background:#22c55e;border-radius:50%;flex-shrink:0;width:6px;height:6px;display:inline-block}#calibration-status[data-calibration-ready=false] .status-dot{background:#92929b}.toolbar-group{flex-shrink:0;align-items:center;gap:8px;display:flex}.toolbar-label{color:var(--muted);margin-right:2px;font-size:10px}.unit-switch{border:1px solid var(--line);background:var(--surface-muted);border-radius:9px;gap:2px;padding:3px;display:flex}.unit-switch button{min-width:34px;height:31px;color:var(--muted);border:1px solid #0000;border-radius:6px;font-size:12px}.unit-switch button[aria-pressed=true]{background:var(--surface);color:var(--blue);border-color:var(--line);font-weight:600}.unit-switch button:hover{color:var(--blue)}.edge-controls{gap:4px}.edge-button{width:30px;height:33px;color:var(--muted);border:1px solid #0000;border-radius:6px;place-items:center;display:grid}.edge-button:hover{background:var(--surface-muted)}.edge-button[aria-pressed=true]{background:var(--blue-wash);color:var(--blue);border-color:var(--blue)}@supports (color:color-mix(in lab, red, red)){.edge-button[aria-pressed=true]{border-color:color-mix(in srgb, var(--blue) 15%, transparent)}}.edge-symbol{border:1px solid;border-radius:2px;width:15px;height:14px;position:relative}.edge-symbol:after{content:"";background:currentColor;border-radius:1px;position:absolute}.edge-top:after{height:3px;top:-1px;left:0;right:0}.edge-bottom:after{height:3px;bottom:-1px;left:0;right:0}.edge-left:after{width:3px;top:0;bottom:0;left:-1px}.edge-right:after{width:3px;top:0;bottom:0;right:-1px}.toolbar-actions{flex-shrink:0;align-items:center;gap:2px;display:flex}.theme-toggle{border:1px solid var(--line);border-radius:9px;width:38px;height:38px;margin-left:1px}#workspace{inset:var(--toolbar-height) 0 0;touch-action:none;-webkit-user-select:none;user-select:none;cursor:crosshair;background:var(--surface);z-index:0;position:fixed;overflow:hidden}#workspace:focus-visible{outline-offset:-3px}#ruler-canvas{pointer-events:none;z-index:1;width:100%;height:100%;position:absolute;inset:0}.ruler-unit{color:var(--muted);pointer-events:none;z-index:2;font-size:10px;position:absolute;top:13px;left:18px}.workspace-interior{inset:var(--ruler-top) var(--ruler-right) var(--ruler-bottom) var(--ruler-left);pointer-events:none;place-items:center;display:grid;position:absolute}#empty-workspace{text-align:center;color:var(--muted);padding:20px}#empty-workspace>svg{color:var(--blue);opacity:.55;margin:0 auto 20px}#empty-workspace h2{color:var(--text);letter-spacing:-.7px;margin-bottom:10px;font-size:24px;font-weight:500}#empty-workspace p{font-size:14px;line-height:1.8}#workspace-help{opacity:.7;margin-top:18px;font-size:10px;display:block}.workspace-coordinates{color:var(--muted);gap:17px;font-family:ui-monospace,monospace;font-size:9px;display:flex;position:absolute;bottom:17px;left:21px;right:21px}.workspace-coordinates b{margin-left:5px;font-weight:400}#scale-detail{margin-left:auto}.workspace-coordinates #scale-detail{display:none}.announcement{top:calc(var(--toolbar-height) + var(--ruler-top) + 16px);bottom:auto}[data-info=shown] #empty-workspace,[data-info=shown] .workspace-coordinates,[data-info=shown] #selection,[data-info=shown] .measurements-panel{display:none}#page-information{z-index:5;inset:calc(var(--toolbar-height) + var(--ruler-top)) var(--ruler-right) var(--ruler-bottom) var(--ruler-left);background:var(--surface);scroll-padding-top:25px;position:fixed;overflow:hidden auto}#page-information main,#page-information footer{pointer-events:auto}#page-information main{max-width:1220px;margin-inline:auto;padding-inline:38px}.intro{min-height:calc(100svh - var(--toolbar-height) - var(--ruler-top) - 60px);text-align:center;justify-content:center;align-items:center;padding:80px 15px 100px;display:flex}.hero-copy{width:100%}.eyebrow{letter-spacing:1.4px;color:var(--muted);font-size:11px;font-weight:600}.intro .eyebrow{letter-spacing:1.7px;color:var(--blue);justify-content:center;align-items:center;gap:8px;font-size:10px;display:flex}.intro .eyebrow>span{background:currentColor;border-radius:50%;width:5px;height:5px}.intro h1{letter-spacing:-4px;margin:27px 0;font-size:clamp(48px,6.1vw,88px);font-weight:650;line-height:1.08}.intro h1>span{color:var(--blue)}.hero-copy>p{color:var(--muted);letter-spacing:-.2px;font-size:clamp(15px,1.5vw,20px);line-height:1.9}.hero-actions{justify-content:center;align-items:center;gap:15px;margin-top:39px;display:flex}.hero-actions .primary-button{border-radius:11px;gap:11px;padding:16px 25px;font-size:15px}.hero-secondary{border:1px solid var(--line);color:var(--text);border-radius:11px;justify-content:center;align-items:center;gap:18px;padding:16px 24px;font-size:14px;display:inline-flex}.hero-secondary:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-wash)}.intro-notes{color:var(--muted);justify-content:center;align-items:center;gap:24px;margin-top:27px;font-size:11px;display:flex}.intro-notes span{align-items:center;gap:5px;display:flex}.intro-notes svg{color:var(--blue)}.mobile-break{display:none}.info-toggle{bottom:calc(var(--ruler-bottom) + 20px);right:calc(var(--ruler-right) + 24px);z-index:20;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:10px;align-items:center;gap:9px;padding:11px 14px;font-size:12px;font-weight:500;display:inline-flex;position:fixed}.info-toggle:hover{background:var(--blue-wash);color:var(--blue);border-color:var(--blue)}.info-toggle>span{align-items:center;display:inline-flex}.info-toggle kbd{margin-left:4px}.when-info-hidden,[data-info=hidden] .when-info-shown{display:none!important}[data-info=hidden] .when-info-hidden{display:inline-flex!important}kbd{border:1px solid var(--line);background:var(--surface-muted);border-radius:4px;justify-content:center;align-items:center;padding:2px 5px;font-family:inherit;font-size:10px;line-height:1.3;display:inline-flex}#selection{z-index:3;border:1px solid var(--blue);background:var(--blue);position:absolute}@supports (color:color-mix(in lab, red, red)){#selection{background:color-mix(in srgb, var(--blue) 7%, transparent)}}#selection{pointer-events:none;min-width:1px;min-height:1px}#selection-label{color:#fff;white-space:nowrap;font-variant-numeric:tabular-nums;background:#06c;border-radius:5px;padding:6px 9px;font-size:11px;position:absolute;top:7px;left:7px}.handle{border:1px solid var(--blue);background:var(--surface);width:6px;height:6px;position:absolute}.handle-tl{top:-3px;left:-3px}.handle-tr{top:-3px;right:-3px}.handle-bl{bottom:-3px;left:-3px}.handle-br{bottom:-3px;right:-3px}.measurements-panel{bottom:calc(var(--ruler-bottom) + 20px);left:calc(50% + (var(--ruler-left) - var(--ruler-right)) / 2);z-index:15;width:min(620px, calc(100vw - var(--ruler-left) - var(--ruler-right) - 36px));border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:14px 17px;position:fixed;transform:translate(-50%)}#measurement-results{align-items:center;gap:24px;display:flex}#measurement-results>div{flex:1;min-width:0}#measurement-results span{color:var(--muted);margin-bottom:5px;font-size:10px;display:block}#measurement-results strong{letter-spacing:-.3px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere;font-size:15px;font-weight:550}#measurement-results .secondary-button{flex-shrink:0;padding:9px}#measurement-results .secondary-button>span{color:inherit;margin:0;font-size:11px}#ruler-tool:fullscreen{background:var(--surface);overflow:hidden}footer{background:var(--surface-muted);border-top:1px solid var(--line);padding:36px max(30px,50vw - 560px)}footer .brand{gap:8px;font-size:16px}footer .brand svg{color:var(--blue)}footer>p{color:var(--muted);margin-top:12px;font-size:12px}footer>div{border-top:1px solid var(--line);color:var(--muted);justify-content:space-between;margin-top:28px;padding-top:19px;font-size:11px;display:flex}footer>div a{color:var(--blue)}@media (width<=1320px){#toolbar-scale{display:none}.toolbar-controls,.toolbar-brand-area{gap:16px}.app-toolbar{gap:16px;padding-inline:20px}.toolbar-label{display:none}}@media (width<=1050px){.app-toolbar{grid-template-columns:minmax(0,1fr) auto;gap:7px 15px;padding:10px 18px 8px;display:grid}.toolbar-brand-area{justify-content:space-between;gap:15px}.theme-toggle{grid-area:1/2}.toolbar-controls{scrollbar-width:thin;scrollbar-color:var(--line) transparent;grid-area:2/1/auto/-1;gap:20px;width:100%;margin-left:0;padding:4px 0;overflow-x:auto}.toolbar-actions{margin-left:auto}#toolbar-scale{display:inline}.explore-menu summary{padding-block:8px}.explore-menu nav{left:auto;right:0}.intro h1{letter-spacing:-3px;font-size:62px}.intro{padding-inline:0}.how-section{gap:40px;padding:42px}.method-content{padding:20px}#questions{gap:35px}}@media (width<=760px){#page-information main{padding-inline:24px}.intro h1{letter-spacing:-2.4px;font-size:50px}.hero-copy>p{font-size:16px}.hero-actions .primary-button{padding:14px 20px;font-size:13px}.hero-secondary{padding:14px 18px;font-size:12px}.desktop-only{display:none}.section-heading{display:block}.section-heading>p{margin-top:17px;font-size:13px}.how-section{grid-template-columns:1fr;gap:35px;padding:34px}.utility-section{grid-template-columns:1fr;gap:15px;padding-block:35px}#questions{grid-template-columns:1fr;gap:10px}#questions .section-heading .eyebrow{display:none}.measurements-panel{bottom:calc(var(--ruler-bottom) + 77px);max-width:480px}#measurement-results{gap:12px}.workspace-coordinates #scale-detail,.info-toggle kbd{display:none}.info-toggle{right:calc(var(--ruler-right) + 17px);bottom:calc(var(--ruler-bottom) + 15px)}}@media (width<=520px){.explore-menu nav{width:min(280px,100vw - 24px);position:fixed;top:54px;left:12px;right:auto}.app-toolbar{padding-inline:12px}.brand{gap:7px;font-size:15px}.brand-mark{border-radius:8px;width:29px;height:29px}.toolbar-brand-area{gap:8px}.explore-menu summary{gap:6px;padding:8px;font-size:11px}.menu-chevron{margin-left:1px}.theme-toggle{width:33px;height:33px}.toolbar-controls{gap:13px}.calibration-trigger{padding:10px;font-size:11px}.calibration-trigger .status-dot,#toolbar-scale{display:none}.unit-switch button{min-width:31px;height:29px;font-size:11px}.edge-button{width:29px}#page-information main{padding-inline:18px}.intro{min-height:calc(100svh - var(--toolbar-height) - var(--ruler-top));padding:53px 0 72px}.intro .eyebrow{letter-spacing:1px;font-size:8px;line-height:1.8}.intro h1{letter-spacing:-2px;margin:23px 0;font-size:clamp(40px,10vw,53px)}.mobile-break{display:block}.hero-copy>p{font-size:13px;line-height:1.9}.hero-copy>p>br{display:none}.hero-actions{flex-direction:column;gap:11px;margin-top:28px}.hero-actions>button{width:min(100%,240px)}.hero-actions .primary-button{font-size:13px}.hero-secondary{font-size:12px}.intro-notes{flex-wrap:wrap;gap:8px 15px;margin-top:25px;font-size:9px}.intro-notes svg{width:12px}.calibration-section{margin-top:15px}.section-heading{margin-bottom:23px}.section-heading h2,.how-section h2{letter-spacing:-1.2px;font-size:31px}.section-heading .eyebrow{font-size:8px}.section-heading>p{font-size:12px}.method-visual{height:150px}.method-content{padding:22px}.method-card h3{font-size:22px}.method-content>p{min-height:0;font-size:12px}.calibration-footnote{font-size:10px}.how-section{border-radius:15px;margin-top:45px;padding:27px 21px}.how-section .eyebrow{font-size:8px}.how-section>div>p:not(.eyebrow),.steps p{font-size:12px}.steps li{gap:13px}.steps h3{font-size:16px}.history-panel,.shortcuts-panel{padding:22px}.history-panel h2{font-size:21px}.shortcuts-panel p{font-size:11px}.fine-print{font-size:10px!important}#questions{padding:30px 0 45px}.faq-list summary,.faq-list details p{font-size:12px}footer{padding:27px 22px 70px}footer>div{gap:10px;font-size:9px}footer>p{font-size:11px}.measurements-panel{padding:12px 13px}#measurement-results{grid-template-columns:1fr 1fr;gap:12px;display:grid}#measurement-results strong{font-size:14px}#copy-measurement{grid-column:1/-1;width:100%}#empty-workspace h2{font-size:21px}#empty-workspace p{font-size:12px}#workspace-help{max-width:220px;font-size:9px;line-height:1.8}.workspace-coordinates{bottom:18px;left:16px}dialog{padding:22px}.dialog-heading h2{font-size:25px}.dialog-heading{gap:8px}.dialog-intro{font-size:12px}.calibration-tabs{gap:5px}.calibration-tabs button{flex-direction:column;padding:10px 3px;font-size:10px}}@media (width<=360px){.explore-menu summary>span:first-of-type{display:none}}:root{--ambient-blue:#428bff33;--ambient-sky:#57bfff26;--ambient-edge:#4584dd2b;--ambient-shadow:#173d7314;--glass-surface:var(--surface)}@supports (color:color-mix(in lab, red, red)){:root{--glass-surface:color-mix(in srgb, var(--surface) 90%, transparent)}}:root[data-theme=dark]{--ambient-blue:#256dff3d;--ambient-sky:#2e9eed1f;--ambient-edge:#84b8ff30;--ambient-shadow:#0000003d}#page-information{background:radial-gradient(ellipse 70% 65% at 16% 3%, var(--ambient-blue), transparent 72%), radial-gradient(ellipse 60% 65% at 94% 62%, var(--ambient-sky), transparent 75%), var(--surface)}.intro{isolation:isolate;position:relative}.intro:before{content:"";z-index:-1;pointer-events:none;background-image:linear-gradient(var(--blue) 1px, transparent 1px), linear-gradient(90deg, var(--blue) 1px, transparent 1px);position:absolute;inset:0 -3%}@supports (color:color-mix(in lab, red, red)){.intro:before{background-image:linear-gradient(color-mix(in srgb, var(--blue) 9%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--blue) 9%, transparent) 1px, transparent 1px)}}.intro:before{opacity:.6;background-size:52px 52px;-webkit-mask-image:radial-gradient(52% 47% at 50% 44%,#000 10%,#0000 100%);mask-image:radial-gradient(52% 47% at 50% 44%,#000 10%,#0000 100%)}.intro .eyebrow{border:1px solid var(--ambient-edge);background:var(--surface);width:fit-content;margin-inline:auto;padding:8px 13px}@supports (color:color-mix(in lab, red, red)){.intro .eyebrow{background:color-mix(in srgb, var(--surface) 65%, transparent)}}.intro .eyebrow{letter-spacing:1.6px;box-shadow:0 2px 12px var(--ambient-shadow);border-radius:999px;font-size:9px}@supports (color:color-mix(in lab, red, red)){.intro .eyebrow{box-shadow:0 2px 12px color-mix(in srgb, var(--ambient-shadow) 40%, transparent)}}.intro h1{letter-spacing:-.065em;font-weight:650}.hero-copy>p{letter-spacing:-.3px;font-size:17px;line-height:1.85}.hero-dimension{max-width:330px;color:var(--blue);justify-content:center;align-items:center;gap:15px;margin:-8px auto 25px;display:flex}.hero-dimension>span{letter-spacing:1.5px;opacity:.7;flex-shrink:0;font-family:ui-monospace,monospace;font-size:10px}.hero-dimension b{opacity:.5;margin-inline:2px;font-weight:400}.hero-dimension i{background:linear-gradient(90deg, transparent, var(--blue));flex:1;height:1px;position:relative}@supports (color:color-mix(in lab, red, red)){.hero-dimension i{background:linear-gradient(90deg, transparent, color-mix(in srgb, var(--blue) 30%, transparent))}}.hero-dimension i:after{content:"";background:var(--blue);width:1px;height:7px;position:absolute;top:-3px;right:0}@supports (color:color-mix(in lab, red, red)){.hero-dimension i:after{background:color-mix(in srgb, var(--blue) 40%, transparent)}}.hero-dimension i:last-child{transform:rotate(180deg)}.hero-actions{margin-top:30px}.intro-notes{letter-spacing:-.1px;font-size:10px}.hero-calibration{border:1px solid var(--ambient-edge);background:var(--glass-surface);width:fit-content;max-width:100%;box-shadow:0 8px 35px var(--ambient-shadow), 0 1px 0 #fff3 inset;border-radius:15px;align-items:center;gap:20px;margin:34px auto 0;padding:14px 18px;display:flex}@supports (color:color-mix(in lab, red, red)){.hero-calibration{box-shadow:0 8px 35px color-mix(in srgb, var(--ambient-shadow) 65%, transparent), 0 1px 0 #fff3 inset}}.quick-calibration-label{border-right:1px solid var(--ambient-edge);text-align:left;color:var(--muted);flex-shrink:0;align-items:center;gap:9px;padding-right:21px;font-size:9px;line-height:1.7;display:flex}.quick-calibration-label>svg{color:var(--blue)}.quick-calibration-label strong{color:var(--text);font-size:10px;font-weight:500}.quick-calibration-options{gap:5px;min-width:0;display:flex}.quick-calibration-options button{white-space:nowrap;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px 9px;font-size:11px;display:flex}.quick-calibration-options button>svg{color:var(--blue)}.quick-calibration-options button:hover{background:var(--blue-wash);color:var(--blue)}.quick-arrow{color:var(--muted);margin-left:2px;font-size:11px}.intro h1>span{color:var(--blue);-webkit-text-fill-color:transparent;filter:drop-shadow(0 4px 20px #2576e617);background:linear-gradient(120deg,#005fc6 5%,#248cf1 50%,#005abb 95%);-webkit-background-clip:text;background-clip:text}:root[data-theme=dark] .intro h1>span{background-image:linear-gradient(120deg,#90caff,#b2deff 50%,#64aaff)}.intro .eyebrow>span{box-shadow:0 0 0 4px var(--blue), 0 0 16px var(--blue)}@supports (color:color-mix(in lab, red, red)){.intro .eyebrow>span{box-shadow:0 0 0 4px color-mix(in srgb, var(--blue) 7%, transparent), 0 0 16px color-mix(in srgb, var(--blue) 30%, transparent)}}.app-toolbar{background:var(--glass-surface);-webkit-backdrop-filter:blur(18px)saturate(140%);border-bottom-color:var(--ambient-edge);box-shadow:0 1px 0 #ffffff1f inset, 0 5px 24px var(--ambient-shadow)}.toolbar-controls{gap:16px}.toolbar-actions{border-left:1px solid var(--ambient-edge);padding-left:10px}.unit-switch{background:var(--surface-muted);border-radius:10px;padding:4px}@supports (color:color-mix(in lab, red, red)){.unit-switch{background:color-mix(in srgb, var(--surface-muted) 75%, transparent)}}.edge-controls{background:var(--surface-muted)}@supports (color:color-mix(in lab, red, red)){.edge-controls{background:color-mix(in srgb, var(--surface-muted) 50%, transparent)}}.edge-controls{border-radius:9px;padding:4px}.toolbar-label{padding-inline:4px}.brand-mark{background:linear-gradient(145deg,#248fff,#06c 65%,#0054ae);box-shadow:inset 0 1px #ffffff4d,0 4px 13px #0066cc2e}.calibration-trigger,.explore-menu summary,.theme-toggle{background:var(--surface)}@supports (color:color-mix(in lab, red, red)){.calibration-trigger,.explore-menu summary,.theme-toggle{background:color-mix(in srgb, var(--surface) 70%, transparent)}}.calibration-trigger,.explore-menu summary,.theme-toggle{border-color:var(--ambient-edge);box-shadow:inset 0 1px #ffffff17}.unit-switch button[aria-pressed=true],.edge-button[aria-pressed=true]{box-shadow:0 2px 7px var(--ambient-shadow), 0 1px 0 #ffffff29 inset}.hero-actions .primary-button{background:linear-gradient(165deg,#1684ee,#06c 65%,#0057b7);border-color:#005bbd38;transition:transform .18s,box-shadow .18s;box-shadow:inset 0 1px #ffffff3d,0 7px 20px #0066cc2e,0 0 42px #3c8fff1a}.hero-actions .primary-button:hover{transform:translateY(-2px);box-shadow:inset 0 1px #ffffff3d,0 10px 26px #0066cc3d,0 0 50px #3c8fff26}.hero-secondary{background:var(--glass-surface);border-color:var(--ambient-edge);box-shadow:0 3px 14px var(--ambient-shadow), 0 1px 0 #ffffff26 inset}#workspace:before{content:"";inset:var(--ruler-top) var(--ruler-right) var(--ruler-bottom) var(--ruler-left);pointer-events:none;background:radial-gradient(ellipse 75% 65% at 70% 8%, var(--ambient-blue), transparent 80%);position:absolute}@supports (color:color-mix(in lab, red, red)){#workspace:before{background:radial-gradient(ellipse 75% 65% at 70% 8%, color-mix(in srgb, var(--ambient-blue) 27%, transparent), transparent 80%)}}.measurements-panel,.info-toggle,.explore-menu nav{background:var(--glass-surface);border-color:var(--ambient-edge);-webkit-backdrop-filter:blur(18px)saturate(130%);box-shadow:0 8px 30px var(--ambient-shadow), 0 1px 0 #ffffff1f inset}.method-card,.history-panel,.shortcuts-panel{border-color:var(--ambient-edge);background:var(--surface)}@supports (color:color-mix(in lab, red, red)){.method-card,.history-panel,.shortcuts-panel{background:color-mix(in srgb, var(--surface) 94%, transparent)}}.method-card,.history-panel,.shortcuts-panel{box-shadow:0 6px 24px var(--ambient-shadow)}@supports (color:color-mix(in lab, red, red)){.method-card,.history-panel,.shortcuts-panel{box-shadow:0 6px 24px color-mix(in srgb, var(--ambient-shadow) 60%, transparent)}}.method-card{transition:border-color .2s,box-shadow .2s}.method-card:hover{box-shadow:0 10px 32px var(--ambient-shadow)}.method-content{padding:28px}.method-card h3{letter-spacing:-.8px;font-weight:600}.method-visual{background:radial-gradient(ellipse at 50% 80%, var(--blue), var(--surface-muted))}@supports (color:color-mix(in lab, red, red)){.method-visual{background:radial-gradient(ellipse at 50% 80%, color-mix(in srgb, var(--blue) 12%, var(--surface)), var(--surface-muted))}}.method-visual{border-bottom:1px solid var(--ambient-edge)}.method-visual svg{filter:drop-shadow(0 7px 10px var(--ambient-shadow))}.method-tag{border:1px solid var(--ambient-edge);background:var(--surface);font-size:9px}.method-top>span:last-child{opacity:.6;font-family:ui-monospace,monospace;font-size:9px}.section-heading .eyebrow{color:var(--blue);letter-spacing:1.7px;font-size:9px}.section-heading h2,.how-section h2{letter-spacing:-.055em}.faq-list summary{font-weight:500}.faq-list summary:after{border:1px solid var(--ambient-edge);border-radius:50%;flex-shrink:0;place-items:center;width:26px;height:26px;font-size:17px;display:grid}.how-section{box-shadow:0 14px 40px var(--ambient-shadow);background:radial-gradient(at 0 0,#2368bc47,#0000 65%),#1d1d1f;border:1px solid #79adf226}dialog{border-color:var(--ambient-edge);background:radial-gradient(ellipse at 100% 0%, var(--ambient-blue), transparent 55%), var(--surface)}@supports (color:color-mix(in lab, red, red)){dialog{background:radial-gradient(ellipse at 100% 0%, color-mix(in srgb, var(--ambient-blue) 45%, transparent), transparent 55%), var(--surface)}}dialog{box-shadow:0 25px 90px #00102d33,inset 0 1px #ffffff26}@media (width<=1050px){.hero-calibration{gap:12px;padding-inline:14px}.quick-calibration-label{padding-right:14px}.quick-calibration-options button{gap:6px;padding-inline:7px;font-size:10px}.quick-arrow{display:none}}@media (width<=760px){.hero-copy>p{font-size:15px}.hero-calibration{padding:13px}.quick-calibration-label{display:none}.quick-calibration-options{width:100%}.quick-calibration-options button{padding-inline:12px;font-size:11px}}@media (width<=520px){.intro{padding-top:38px;padding-bottom:70px}.intro .eyebrow{letter-spacing:1.1px;padding:7px 11px;font-size:7px}.intro h1{letter-spacing:-.065em;margin-block:21px;font-size:43px}.hero-copy>p{font-size:12px;line-height:1.9}.hero-dimension{gap:10px;max-width:230px;margin:-5px auto 18px}.hero-dimension>span{font-size:8px}.hero-actions{margin-top:24px}.intro-notes{gap:13px;margin-top:22px;font-size:8px}.hero-calibration{border-radius:12px;width:100%;margin-top:25px;padding:7px}.quick-calibration-options{grid-template-columns:repeat(3,minmax(0,1fr));gap:0;display:grid}.quick-calibration-options button{flex-direction:column;gap:7px;padding:10px 3px;font-size:8px}.quick-calibration-options button+button{border-left:1px solid var(--ambient-edge);border-radius:0}.toolbar-controls{gap:12px}.unit-switch{padding:3px}.method-content{padding:22px}.method-card h3{font-size:21px}}@media (forced-colors:active){.intro h1>span{-webkit-text-fill-color:currentColor;filter:none;background:0 0}#page-information,#workspace:before,.intro:before{background-image:none}}.mode-switch{border:1px solid var(--ambient-edge);background:var(--surface-muted);border-radius:9px;flex-shrink:0;align-items:center;gap:2px;padding:3px;display:flex}.mode-switch button{color:var(--muted);border:1px solid #0000;border-radius:6px;padding:8px 10px;font-size:11px;line-height:1.3}.mode-switch button[aria-pressed=true]{background:var(--surface);border-color:var(--ambient-edge);color:var(--blue);box-shadow:0 2px 7px var(--ambient-shadow);font-weight:550}.mode-switch button:hover{color:var(--blue)}.mobile-settings-trigger,.mobile-tool-label{display:none}#page-information{animation:.16s ease-out information-in}@keyframes information-in{0%{opacity:.5}to{opacity:1}}#crosshairs{z-index:2;pointer-events:none;position:absolute;inset:0}[data-info=shown] #crosshairs{display:none}.crosshair-line{opacity:.55;position:absolute}.crosshair-vertical{left:var(--cursor-x);background:repeating-linear-gradient(to bottom, var(--blue) 0 3px, transparent 3px 7px);width:1px;top:0;bottom:0}.crosshair-horizontal{top:var(--cursor-y);background:repeating-linear-gradient(to right, var(--blue) 0 3px, transparent 3px 7px);height:1px;left:0;right:0}.axis-readout{color:#fff;font-variant-numeric:tabular-nums;white-space:nowrap;background:#06c;border-radius:4px;padding:4px 6px;font-size:9px;position:absolute}.axis-top,.axis-bottom{left:clamp(30px, var(--cursor-x), calc(100% - 30px));transform:translate(-50%)}.axis-top{top:2px}.axis-bottom{bottom:2px}.axis-left,.axis-right{top:clamp(30px, var(--cursor-y), calc(100% - 30px));writing-mode:vertical-rl;transform:translateY(-50%)}.axis-left{left:2px}.axis-right{right:2px}#cursor-readout{left:var(--readout-x);top:var(--readout-y);background:var(--glass-surface);color:var(--blue);border:1px solid var(--ambient-edge);white-space:nowrap;box-shadow:0 4px 12px var(--ambient-shadow);border-radius:6px;padding:7px 9px;font-family:ui-monospace,monospace;font-size:10px;position:absolute}#toggle-crosshairs[aria-pressed=true]{color:var(--blue);background:var(--blue-wash)}#selection{pointer-events:auto;cursor:move;touch-action:none}#selection-label,#selection-secondary{pointer-events:none}#selection-secondary{background:var(--surface);color:var(--blue);border:1px solid var(--ambient-edge);white-space:nowrap;font-variant-numeric:tabular-nums;border-radius:4px;padding:4px 7px;font-size:10px;position:absolute;top:38px;left:7px}.handle{pointer-events:auto;z-index:2;touch-action:none;background:0 0;border:0;border-radius:4px;width:26px;height:26px;padding:0}.handle:after{content:"";background:var(--surface);border:1.5px solid var(--blue);width:8px;height:8px;box-shadow:0 1px 4px var(--ambient-shadow);border-radius:2px;position:absolute;top:9px;left:9px}.handle:hover:after,.handle:focus-visible:after{background:var(--blue)}.handle-tl{cursor:nwse-resize;top:-13px;left:-13px}.handle-tr{cursor:nesw-resize;top:-13px;right:-13px}.handle-bl{cursor:nesw-resize;bottom:-13px;left:-13px}.handle-br{cursor:nwse-resize;bottom:-13px;right:-13px}#measurement-results small{color:var(--muted);font-variant-numeric:tabular-nums;margin-top:5px;font-size:10px;display:block}.result-context{border-top:1px solid var(--ambient-edge);color:var(--muted);justify-content:space-between;align-items:center;gap:15px;margin-top:12px;padding-top:10px;font-size:9px;display:flex}.result-context .text-link{white-space:nowrap;font-size:9px}.measurements-panel{width:min(680px, calc(100vw - var(--ruler-left) - var(--ruler-right) - 36px))}.calibration-feedback{background:var(--blue-wash);border:1px solid var(--ambient-edge);color:var(--blue);border-radius:8px;margin:-7px 0 23px;padding:10px 12px;font-size:11px;line-height:1.7}.card-fine-controls{align-items:center;gap:14px;margin-block:8px;display:flex}.card-fine-controls>button{border:1px solid var(--ambient-edge);width:36px;height:36px;color:var(--blue);background:var(--blue-wash);border-radius:8px;flex-shrink:0;place-items:center;font-size:19px;display:grid}.card-fine-controls>button:hover{border-color:var(--blue)}.recalibration-alert{z-index:16;top:calc(var(--toolbar-height) + var(--ruler-top) + 12px);left:calc(50% + (var(--ruler-left) - var(--ruler-right)) / 2);width:max-content;max-width:calc(100vw - var(--ruler-left) - var(--ruler-right) - 24px);background:var(--glass-surface);color:var(--text);border:1px solid var(--ambient-edge);box-shadow:0 6px 20px var(--ambient-shadow);border-radius:9px;justify-content:center;align-items:center;gap:9px;padding:10px 13px;font-size:11px;display:flex;position:fixed;transform:translate(-50%)}.recalibration-alert>svg{color:var(--blue)}.recalibration-alert button{color:var(--blue);font-weight:550}.recalibration-alert span{line-height:1.6}[data-info=shown] .recalibration-alert{display:none}[data-info=hidden][data-calibration-review=true] .announcement{top:calc(var(--toolbar-height) + var(--ruler-top) + 65px)}.control-tooltip{z-index:100;background:var(--text);width:max-content;max-width:calc(100vw - 16px);color:var(--surface);pointer-events:none;box-shadow:0 4px 15px var(--ambient-shadow);border-radius:6px;padding:7px 10px;font-size:10px;line-height:1.6;position:fixed}#mobile-settings-dialog{width:min(520px,100%);max-height:85dvh;padding:24px 23px max(24px, env(safe-area-inset-bottom));border-radius:21px 21px 0 0;margin:auto auto 0}.settings-sheet-heading{justify-content:space-between;align-items:flex-start;gap:15px;margin-bottom:24px;display:flex}.settings-sheet-heading .eyebrow{color:var(--blue);font-size:8px}.settings-sheet-heading h2{letter-spacing:-.8px;margin-top:7px;font-size:25px;font-weight:600}.settings-sheet section+section{border-top:1px solid var(--ambient-edge);margin-top:21px;padding-top:20px}.settings-sheet section h3{margin-bottom:11px;font-size:12px;font-weight:550}.settings-sheet>.fine-print{margin-top:23px}#mobile-calibration-slot .calibration-trigger{justify-content:flex-start;width:100%;padding:13px;font-size:12px}#mobile-calibration-slot #toolbar-scale{margin-left:auto;font-size:9px;display:inline}#mobile-calibration-feedback{color:var(--muted);margin-top:10px;font-size:10px;line-height:1.8}#mobile-edges-slot .edge-controls{grid-template-columns:repeat(4,minmax(0,1fr));gap:5px;padding:5px;display:grid}#mobile-edges-slot .toolbar-label{display:none}#mobile-edges-slot .edge-button{flex-direction:column;justify-content:center;align-items:center;gap:10px;width:auto;height:66px;display:flex}#mobile-settings-dialog .mobile-tool-label{font-size:10px;display:inline}#mobile-tools-slot .toolbar-actions{border:0;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0;padding:0;display:grid}#mobile-tools-slot .icon-button{background:var(--surface-muted);border:1px solid var(--ambient-edge);flex-direction:column;gap:9px;width:100%;height:66px;display:flex}#mobile-tools-slot #toggle-crosshairs[aria-pressed=true]{background:var(--blue-wash)}@media (width<=1320px){.toolbar-controls{gap:10px}.toolbar-brand-area,.app-toolbar{gap:12px}}@media (width<=1250px){.app-toolbar{grid-template-columns:minmax(0,1fr) auto;gap:7px 15px;padding:10px 18px 8px;display:grid}.toolbar-brand-area{justify-content:space-between;gap:15px}.theme-toggle{grid-area:1/2}.toolbar-controls{grid-area:2/1/auto/-1;gap:20px;width:100%;margin-left:0;padding:4px 0}.toolbar-actions{margin-left:auto}}@media (width<=760px){.mobile-settings-trigger{background:var(--blue-wash);color:var(--blue);border:1px solid var(--ambient-edge);flex-shrink:0;display:inline-flex}.toolbar-controls{justify-content:space-between;gap:8px;overflow:visible}.mode-switch button{padding:8px;font-size:10px}.mode-switch{padding:3px}.unit-switch button{min-width:28px}.toolbar-brand-area{gap:12px}.recalibration-alert{gap:6px;font-size:10px}.control-tooltip{display:none}#measurement-results small{font-size:9px}.result-context{align-items:flex-start;gap:10px;font-size:8px;line-height:1.7}.result-context .text-link{font-size:8px}.measurements-panel{width:min(480px, calc(100vw - var(--ruler-left) - var(--ruler-right) - 28px))}}@media (width<=360px){.app-toolbar{padding-inline:12px}.mode-switch button{padding-inline:6px;font-size:9px}.unit-switch button{min-width:25px}.mobile-settings-trigger{width:33px;height:33px}.toolbar-controls{gap:6px}}@media (prefers-reduced-motion:reduce){#page-information{animation:none}}#calibration-dialog{width:min(1040px,100vw - 24px);max-width:calc(100vw - 24px);max-height:calc(100dvh - 24px);overflow:auto}.dialog-heading-actions{align-items:center;gap:10px;display:flex}#expand-calibration{border:1px solid var(--line);white-space:nowrap;border-radius:8px;align-items:center;gap:6px;padding:8px 10px;font-size:12px;display:inline-flex}#expand-calibration:hover{color:var(--blue);border-color:var(--blue)}.calibration-resize-hint{display:none}@media (width>=761px) and (pointer:fine){#calibration-dialog{resize:both;min-width:480px;min-height:min(400px,100dvh - 24px)}#calibration-dialog .calibration-resize-hint{text-align:right;color:var(--muted);margin-top:10px;font-size:11px;display:block}}#calibration-dialog .calibration-tabs{grid-template-columns:repeat(4,minmax(0,1fr))}#calibration-dialog .physical-recommendation{color:var(--blue);font-weight:650}.reference-options{border:0;min-width:0;margin:20px 0 16px;padding:0}.reference-options legend,.ppi-input-label{color:var(--muted);margin-bottom:10px;font-size:12px}.reference-buttons{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;display:grid}.reference-buttons button{border:1px solid var(--line);border-radius:9px;justify-content:center;align-items:center;gap:7px;padding:13px 5px;font-size:12px;display:flex}.reference-buttons button[aria-pressed=true]{background:var(--blue-wash);color:var(--blue);border-color:var(--blue)}.reference-buttons button:hover{border-color:var(--blue)}#calibration-dialog .reference-card-space{justify-content:flex-start;width:100%;margin-block:12px;padding:15px 0 20px;overflow-x:auto}#calibration-dialog #reference-card{box-sizing:border-box;margin-inline:auto}#reference-card[data-reference=a4],#reference-card[data-reference=letter],#reference-card[data-reference=custom]{aspect-ratio:auto;border-radius:3px;height:140px}#reference-card[data-reference=custom]{justify-content:center;height:100px}#reference-card[data-reference=custom]>svg{display:none}#reference-card{overflow:hidden}#reference-fit-note{color:#713f12;background:#fef9c3;border:1px solid #eab308;border-radius:9px;margin-top:16px;padding:14px 16px}#reference-fit-note strong{color:inherit;margin-bottom:5px;font-size:13px;display:block}#calibration-dialog #reference-fit-note p{color:inherit;margin:0;font-size:12px}:root[data-theme=dark] #reference-fit-note{color:#fef08a;background:#422f0a;border-color:#ca8a04}.custom-length-row{gap:8px;margin:9px 0 18px;display:flex}#calibration-dialog .custom-length-row input{flex:1;min-width:0}#calibration-dialog input:not([type=range]),#calibration-dialog select{border:1px solid var(--line);background:var(--surface-muted);color:var(--text);font:inherit;border-radius:8px;padding:12px;font-size:14px}#device-search,#device-model{width:100%;margin:9px 0 18px;display:block}.ppi-input-label{margin-top:14px;display:block}.calibration-number{width:130px;margin-bottom:12px}#device-spec-link{margin-bottom:15px;display:inline-block}#device-spec-link[hidden]{display:none}@media (width<=480px){#expand-calibration{padding:8px}#expand-calibration span{display:none}.dialog-heading-actions{gap:4px}.reference-buttons{gap:5px}.reference-buttons button{gap:5px;font-size:11px}.reference-buttons svg{width:15px}}:root{--surface:#fff;--surface-muted:#f5f5f7;--page:#fff;--text:#111827;--muted:#434d5d;--line:#e0e3e8;--blue:#06c;--blue-wash:#edf5ff;--grid-dot:#dce2e9;color-scheme:light}:root[data-theme=dark]{--surface:#1d1d1f;--surface-muted:#272729;--page:#151517;--text:#f5f5f7;--muted:#c1c7d1;--line:#3a3a40;--blue:#71b7ff;--blue-wash:#20364d;--grid-dot:#3b3b42;color-scheme:dark}.brand,.intro h1{font-weight:750}.intro h1>span{background-image:linear-gradient(120deg,#004f9f 5%,#0874d7 50%,#004b99 95%)}.hero-copy>p{color:var(--muted);font-weight:550}.section-heading h2,.how-section h2,.dialog-heading h2,.history-panel h2,.settings-sheet-heading h2{font-weight:700}.method-card h3,.steps h3,.shortcuts-panel h3,.faq-list summary,[data-panel] h3,.primary-button,.hero-actions .primary-button,.secondary-button,.hero-secondary{font-weight:650}.calibration-trigger,.explore-menu summary,.explore-menu a,.quick-calibration-options button,.calibration-tabs button,.info-toggle,.mode-switch button,.unit-switch button{font-weight:600}.mode-switch button[aria-pressed=true],.unit-switch button[aria-pressed=true]{font-weight:700}.intro-notes,.quick-calibration-label,.toolbar-label,#toolbar-scale,.fine-print{font-weight:550}.quick-calibration-label strong,.eyebrow,.method-tag{font-weight:650}.hero-dimension>span{opacity:1;font-weight:600}.method-top>span:last-child{opacity:.85;font-weight:550}#measurement-results strong{font-weight:700}.ruler-unit{color:var(--text);font-size:11px;font-weight:750}#measurement-results span,#measurement-results small{font-weight:550}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition:none!important}}@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-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}@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}body.content-page{overflow:auto}nav[data-astro-cid-nns7i3if]{flex-wrap:wrap;gap:14px 24px;margin-top:24px;font-size:12px;display:flex}nav[data-astro-cid-nns7i3if] a[data-astro-cid-nns7i3if]{color:var(--muted)}nav[data-astro-cid-nns7i3if] a[data-astro-cid-nns7i3if]:hover,nav[data-astro-cid-nns7i3if] a[data-astro-cid-nns7i3if][aria-current=page]{color:var(--blue);text-underline-offset:4px;text-decoration:underline}footer[data-astro-cid-nns7i3if]>div[data-astro-cid-nns7i3if]{flex-wrap:wrap;gap:14px}footer[data-astro-cid-nns7i3if] .brand[data-astro-cid-nns7i3if]{white-space:normal}