@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-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}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-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,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;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{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}.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}.static{position:static}.container{width:100%}@media(min-width:40rem){.container{max-width:40rem}}@media(min-width:48rem){.container{max-width:48rem}}@media(min-width:64rem){.container{max-width:64rem}}@media(min-width:80rem){.container{max-width:80rem}}@media(min-width:96rem){.container{max-width:96rem}}.block{display:block}.grid{display:grid}.hidden{display:none}.inline{display:inline}.table{display:table}.resize{resize:both}.rounded{border-radius:.25rem}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.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,)}}:root{--bg:#f8fafc;--surface:#fff;--text:#111827;--muted:#4b5563;--soft:#f3f6f8;--border:#dfe5eb;--border-strong:#cfd8e3;--green:#057a3d;--green-dark:#045f31;--green-soft:#eaf6ee;--shadow:0 8px 24px #0f172a14;--radius:8px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);min-width:320px;color:var(--text);letter-spacing:0;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}.site-shell{width:min(1460px,100%);margin:0 auto;padding:0 36px 40px}.topbar{border-bottom:1px solid var(--border);background:var(--bg);justify-content:space-between;align-items:center;min-height:76px;display:flex}.brand{letter-spacing:-.01em;align-items:center;gap:12px;font-size:28px;font-weight:760;display:inline-flex}.desktop-nav{align-self:stretch;gap:4px;display:flex}.nav-link{color:#111827;align-items:center;gap:9px;padding:0 20px;font-size:16px;font-weight:650;display:inline-flex;position:relative}.nav-link svg{stroke-width:2.1px}.nav-link.is-active{color:var(--green)}.nav-link.is-active:after{background:var(--green);content:"";border-radius:4px 4px 0 0;height:4px;position:absolute;bottom:0;left:16px;right:16px}.mobile-menu{color:var(--text);background:0 0;border:0;display:none}.mobile-nav{display:none}.page-content{padding:38px 0 0}.intro{margin-bottom:26px}.intro h1{letter-spacing:-.02em;margin:0;font-size:clamp(2rem,3vw,3rem);font-weight:780;line-height:1.08}.intro p{color:#1f2937;margin:12px 0 0;font-size:17px;line-height:1.55}.tool-grid,.seo-page-grid{grid-template-columns:minmax(0,1fr) 480px;align-items:start;gap:24px;display:grid}.side-stack{gap:18px;display:grid}.panel{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}.calculator-panel,.live-panel,.related-panel,.chart-panel,.faq-panel{padding:22px}.panel-title{color:#111827;align-items:center;gap:12px;margin:0;font-size:20px;font-weight:760;line-height:1.2;display:flex}.panel-title svg{stroke-width:2px;flex:none}.input-wrap{margin-top:20px;position:relative}.input-wrap input,.search-wrap input{border:1px solid var(--border-strong);width:100%;color:var(--text);background:#fbfdff;border-radius:7px;outline:none;transition:border-color .15s,box-shadow .15s}.input-wrap input{height:58px;padding:0 48px 0 18px;font-size:20px}.input-wrap input::placeholder,.search-wrap input::placeholder{color:#8a94a3}.input-wrap input:focus,.search-wrap input:focus{border-color:var(--green);box-shadow:0 0 0 3px #057a3d1f}.input-wrap button{color:#6b7280;cursor:pointer;background:0 0;border:0;place-items:center;width:28px;height:28px;font-size:20px;display:grid;position:absolute;top:50%;right:14px}.input-error{color:#b42318;min-height:18px;margin:6px 0 0;font-size:13px;font-weight:650}.control-block{margin-top:18px}.control-label{color:#1f2937;margin-bottom:8px;font-size:13px;font-weight:760;display:block}.segmented,.chart-tabs{border:1px solid var(--border-strong);background:var(--soft);border-radius:7px;grid-auto-columns:1fr;grid-auto-flow:column;display:grid;overflow:hidden}.segmented-four{grid-template-columns:repeat(4,minmax(0,1fr));grid-auto-flow:initial}.segmented button,.chart-tabs button{border:0;border-right:1px solid var(--border-strong);color:#111827;cursor:pointer;background:0 0;min-height:47px;font-size:14px;font-weight:700;line-height:1.15}.segmented button:last-child,.chart-tabs button:last-child{border-right:0}.segmented button.is-selected,.chart-tabs button.is-selected{background:var(--green);color:#fff;box-shadow:inset 0 0 0 1px #0000000d}.split-controls{grid-template-columns:minmax(0,1fr) 280px;gap:64px;display:grid}.unit-toggle{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-flow:initial}.actions-row{justify-content:space-between;align-items:center;margin-top:30px;display:flex}.primary-button,.secondary-button,.tool-button{cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:10px;min-height:48px;font-size:16px;font-weight:740;display:inline-flex}.primary-button{border:1px solid var(--green-dark);background:var(--green);color:#fff;min-width:178px;box-shadow:0 8px 18px #057a3d38}.primary-button:hover{background:var(--green-dark)}.secondary-button,.tool-button{border:1px solid var(--border-strong);color:#111827;background:#fff}.secondary-button{min-width:126px}.tool-button{min-width:150px;min-height:43px;padding:0 14px;font-size:14px}.ruler-card{border-top:1px solid var(--border);margin-top:28px;padding-top:20px}.ruler-labels{grid-template-columns:repeat(5,1fr);margin-bottom:5px;font-size:16px;font-weight:700;display:grid}.ruler-labels span:nth-child(2),.ruler-labels span:nth-child(3),.ruler-labels span:nth-child(4){text-align:center}.ruler-labels span:last-child{text-align:right}.ruler-line{border-bottom:2px solid #111827;justify-content:space-between;align-items:flex-start;height:76px;display:flex;position:relative}.tick{background:#111827;width:1px;height:15px}.tick.medium{height:21px}.tick.major{height:28px}.ruler-marker{width:0;position:absolute;bottom:-47px;transform:translate(-50%)}.ruler-marker:before{background:var(--green);content:"";border-radius:4px;width:4px;height:73px;position:absolute;bottom:34px;left:50%;transform:translate(-50%)}.ruler-marker span{background:var(--green);color:#fff;border-radius:6px;padding:7px 11px;font-size:18px;font-weight:800;display:inline-flex;position:absolute;top:0;left:50%;transform:translate(-50%)}.ruler-card p{text-align:center;color:#111827;margin:88px 0 0;font-size:16px}.ruler-card strong,.fraction-cell,.selected-value{color:var(--green);font-weight:800}.result-list{border-top:1px solid var(--border);margin:17px 0 0}.result-list div{border-bottom:1px solid var(--border);grid-template-columns:1fr 1fr;gap:18px;padding:12px 0;font-size:15px;display:grid}.result-list dt{color:#111827}.result-list dd{margin:0;font-weight:760}.related-list{gap:0;margin-top:16px;display:grid}.related-list a{color:#111827;grid-template-columns:24px 1fr 20px;align-items:center;gap:14px;padding:13px 0;font-size:15px;display:grid}.related-list a+a{border-top:1px solid #edf1f5}.related-list svg:first-child{color:var(--green)}.chart-panel{margin-top:24px}.chart-heading{margin-bottom:20px}.chart-subtitle{color:var(--muted);margin:10px 0 0;font-size:15px;line-height:1.5}.seo-tool-panel{padding:22px}.seo-tool-panel p{color:#1f2937;max-width:760px;margin:16px 0 0;font-size:16px;line-height:1.6}.primary-link-button{border:1px solid var(--green-dark);background:var(--green);color:#fff;border-radius:6px;justify-content:center;align-items:center;min-height:46px;margin-top:20px;padding:0 18px;font-size:15px;font-weight:800;display:inline-flex;box-shadow:0 8px 18px #057a3d2e}.chart-toolbar{grid-template-columns:320px auto 1fr;align-items:center;gap:16px;display:grid}.search-wrap{position:relative}.search-wrap input{height:44px;padding:0 42px 0 16px;font-size:15px}.search-wrap svg{color:#374151;position:absolute;top:50%;right:13px;transform:translateY(-50%)}.chart-tabs{width:fit-content;display:flex}.chart-tabs button{min-width:62px;min-height:43px;padding:0 12px}.chart-actions{justify-content:flex-end;gap:12px;display:flex}.mobile-scroll-hint{color:var(--muted);margin:12px 0 0;font-size:13px;display:none}.table-scroll{margin-top:20px;overflow-x:auto}.conversion-table{border-collapse:collapse;text-align:center;width:100%;min-width:850px;font-size:16px}.conversion-table th,.conversion-table td{border:1px solid var(--border);padding:12px 16px}.conversion-table thead th{color:#111827;background:#f5f7f9;font-weight:800}.conversion-table .selected-row td{background:var(--green-soft)}.chart-note{color:#111827;margin:12px 0 0;font-size:13px}.explain-grid{border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);background:#fff;grid-template-columns:repeat(3,1fr);margin-top:18px;display:grid;overflow:hidden}.explain-grid article{min-height:180px;padding:20px}.explain-grid article+article{border-left:1px solid var(--border)}.explain-grid h2,.tool-card h2{margin:0;font-size:17px;font-weight:800;line-height:1.3}.explain-grid ul{margin:14px 0 0;padding-left:18px}.explain-grid li{color:#111827;margin:8px 0;font-size:14px;line-height:1.45}.explain-grid a{color:var(--green);font-weight:760}.seo-notes{grid-template-columns:repeat(3,1fr)}.cards-grid{grid-template-columns:repeat(3,1fr);gap:22px;margin-top:20px;display:grid}.tool-card{border:1px solid var(--border);border-radius:var(--radius);min-height:132px;box-shadow:var(--shadow);background:#fff;grid-template-columns:64px 1fr;align-items:start;gap:18px;padding:24px;display:grid}.tool-card>svg{color:#7d8794;stroke-width:1.5px}.tool-card p{color:#1f2937;margin:12px 0 16px;font-size:14px;line-height:1.55}.tool-card span{color:var(--green);font-size:15px;font-weight:800}.faq-panel{margin-top:34px}.all-tools-panel{margin-top:24px;padding:22px}.all-tools-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px 18px;margin-top:18px;display:grid}.all-tools-grid a{color:#111827;border-bottom:1px solid #edf1f5;min-height:38px;font-size:14px;font-weight:720;line-height:1.35}.all-tools-grid a:hover{color:var(--green)}.faq-list{border:1px solid var(--border);border-radius:var(--radius);gap:0;margin-top:18px;display:grid;overflow:hidden}.faq-item+.faq-item{border-top:1px solid var(--border)}.faq-item button{color:#111827;cursor:pointer;text-align:left;background:#fff;border:0;grid-template-columns:30px 1fr 24px;align-items:start;gap:12px;width:100%;padding:18px;display:grid}.question-mark{background:var(--green);color:#fff;border-radius:999px;place-items:center;width:24px;height:24px;font-size:14px;font-weight:900;display:grid}.faq-item strong{font-size:15px;display:block}.faq-item em{color:#1f2937;margin-top:7px;font-size:14px;font-style:normal;line-height:1.5;display:none}.faq-item.is-open em{display:block}.faq-item.is-open svg{transform:rotate(180deg)}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;clip-path:inset(50%);width:1px;height:1px;position:absolute;overflow:hidden}@media(max-width:1180px){.site-shell{padding:0 22px 36px}.tool-grid{grid-template-columns:minmax(0,1fr) 360px}.chart-toolbar{grid-template-columns:1fr}.chart-actions{justify-content:flex-start}}@media(max-width:900px){.topbar{flex-wrap:wrap;min-height:62px}.brand{font-size:19px}.desktop-nav{display:none}.mobile-menu{cursor:pointer;place-items:center;min-width:44px;min-height:44px;display:grid}.mobile-nav{border-top:1px solid var(--border);width:100%;padding:8px 0 12px;display:grid}.mobile-nav[hidden]{display:none}.mobile-nav a{color:#111827;min-height:42px;padding:11px 0;font-size:14px;font-weight:760}.page-content{padding-top:22px}.intro h1{font-size:1.25rem}.intro p{font-size:12px}.tool-grid,.seo-page-grid,.explain-grid,.cards-grid{grid-template-columns:1fr}.split-controls{grid-template-columns:1fr;gap:18px}.calculator-panel,.live-panel,.related-panel,.chart-panel,.faq-panel{padding:16px}.panel-title{font-size:16px}.input-wrap input{height:46px;font-size:13px}.segmented,.segmented-four{grid-auto-flow:initial;grid-template-columns:repeat(2,minmax(0,1fr))}.control-block .segmented:not(.segmented-four):not(.unit-toggle){grid-template-columns:repeat(5,minmax(0,1fr))}.segmented button{min-height:36px;font-size:11px}.actions-row{margin-top:20px}.primary-button,.secondary-button{min-width:0;min-height:40px;padding:0 13px;font-size:13px}.ruler-labels{font-size:12px}.ruler-line{height:58px}.tick{height:11px}.tick.medium{height:15px}.tick.major{height:21px}.ruler-marker:before{height:56px;bottom:26px}.ruler-marker span{padding:5px 8px;font-size:13px}.ruler-card p{margin-top:72px;font-size:12px}.result-list div{font-size:12px}.chart-tabs{max-width:100%;overflow-x:auto}.chart-tabs button{min-width:62px;font-size:12px}.chart-actions{grid-template-columns:1fr;display:grid}.all-tools-panel{padding:16px}.all-tools-grid{grid-template-columns:1fr}.tool-button{width:100%}.mobile-scroll-hint{display:block}.conversion-table{min-width:720px;font-size:13px}.conversion-table th,.conversion-table td{padding:10px 12px}.explain-grid article+article{border-top:1px solid var(--border);border-left:0}.tool-card{grid-template-columns:48px 1fr;padding:18px}}@media print{.topbar,.intro,.tool-grid,.explain-grid,.cards-grid,.faq-panel,.chart-toolbar{display:none!important}.site-shell{padding:0}.chart-panel{box-shadow:none;border:0}}@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}