/*! tailwindcss v4.3.3 | MIT License | https://tailwindcss.com */@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;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{.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.contents{display:contents}.grid{display:grid}.hidden{display:none}.table{display:table}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}body{font-family:var(--ch-font);color:var(--ch-body);overflow-wrap:break-word;background:#fff;margin:0;font-size:17px;line-height:1.65}img{max-width:100%;height:auto;display:block}a{color:var(--ch-primary-dark)}.wrap{width:100%;max-width:1120px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}.prose{max-width:720px;margin-left:auto;margin-right:auto}.prose>*{max-width:100%}.skip-link{background:var(--ch-ink);color:#fff;z-index:100;border-radius:0 0 var(--ch-radius) 0;padding:12px 18px;position:absolute;top:0;left:-9999px}.skip-link:focus{left:0}:focus-visible{outline:3px solid var(--ch-primary);outline-offset:2px}.site-header{z-index:50;-webkit-backdrop-filter:saturate(180%)blur(8px);backdrop-filter:saturate(180%)blur(8px);border-bottom:1px solid var(--ch-line);background:#fffffff0;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:16px;min-height:68px;display:flex}.brand{color:var(--ch-ink);letter-spacing:-.01em;align-items:center;gap:9px;font-size:1.06rem;font-weight:700;text-decoration:none;display:inline-flex}.brand-tld{color:var(--ch-primary);font-weight:600}.site-nav ul{gap:4px;margin:0;padding:0;list-style:none;display:flex}.site-nav a{border-radius:var(--ch-radius);color:var(--ch-body);transition:background var(--ch-transition),color var(--ch-transition);padding:9px 13px;font-size:.93rem;font-weight:500;text-decoration:none;display:inline-block}.site-nav a:hover{background:var(--ch-surface);color:var(--ch-ink)}.nav-toggle{border:1px solid var(--ch-line);border-radius:var(--ch-radius);min-height:44px;font:inherit;color:var(--ch-ink);cursor:pointer;background:#fff;align-items:center;gap:9px;padding:8px 14px;font-size:.92rem;font-weight:600;display:none}.nav-toggle-bars,.nav-toggle-bars:before,.nav-toggle-bars:after{background:currentColor;width:18px;height:2px;display:block;position:relative}.nav-toggle-bars:before,.nav-toggle-bars:after{content:"";position:absolute}.nav-toggle-bars:before{top:-6px}.nav-toggle-bars:after{top:6px}@media(max-width:860px){.nav-toggle{display:inline-flex}.site-nav{border-bottom:1px solid var(--ch-line);box-shadow:var(--ch-shadow);background:#fff;max-height:calc(100vh - 68px);display:none;position:absolute;top:100%;left:0;right:0;overflow-y:auto}.site-nav.is-open{display:block}.site-nav ul{flex-direction:column;gap:0;padding:8px 16px 16px}.site-nav a{border-bottom:1px solid var(--ch-line);padding:14px 8px;font-size:1rem;display:block}.site-nav li:last-child a{border-bottom:0}}.site-footer{border-top:1px solid var(--ch-line);background:var(--ch-surface);margin-top:72px;padding:44px 0 32px}.footer-inner{flex-wrap:wrap;justify-content:space-between;gap:32px;display:flex}.footer-name{color:var(--ch-ink);margin:0 0 4px;font-weight:700}.footer-tag{color:var(--ch-muted);max-width:34ch;margin:0;font-size:.92rem}.site-footer ul{flex-wrap:wrap;gap:4px 18px;margin:0;padding:0;list-style:none;display:flex}.site-footer a{color:var(--ch-body);font-size:.93rem;text-decoration:none}.site-footer a:hover{color:var(--ch-primary-dark);text-decoration:underline}.footer-legal{border-top:1px solid var(--ch-line);margin-top:28px;padding-top:20px}.footer-legal p{color:var(--ch-muted);max-width:70ch;margin:0 0 6px;font-size:.84rem}.btn{border-radius:var(--ch-radius);cursor:pointer;min-height:48px;transition:background var(--ch-transition),border-color var(--ch-transition);border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:12px 22px;font-size:.98rem;font-weight:600;text-decoration:none;display:inline-flex}.btn-primary{background:var(--ch-primary);color:#fff}.btn-primary:hover{background:var(--ch-primary-dark)}.btn-secondary{color:var(--ch-ink);border-color:var(--ch-line);background:#fff}.btn-secondary:hover{border-color:var(--ch-primary);color:var(--ch-primary-dark)}.section{padding:44px 0}.section-head{margin-bottom:26px}.section-head h1,.section-head h2{color:var(--ch-ink);letter-spacing:-.015em;margin:0 0 8px;font-size:1.5rem}.section-head p{color:var(--ch-muted);max-width:62ch;margin:0}.card{border:1px solid var(--ch-line);border-radius:var(--ch-radius-lg);box-shadow:var(--ch-shadow);background:#fff;padding:22px 24px}.prose h1{letter-spacing:-.02em;color:var(--ch-ink);margin:0 0 18px;font-size:clamp(1.85rem,1.35rem + 2vw,2.5rem);line-height:1.18}.prose h2{color:var(--ch-ink);letter-spacing:-.012em;margin:38px 0 12px;font-size:clamp(1.28rem,1.1rem + .7vw,1.5rem)}.prose h3{color:var(--ch-ink);margin:26px 0 8px;font-size:1.1rem}.prose p{margin:0 0 16px}.prose ul,.prose ol{margin:0 0 18px;padding-left:22px}.prose li{margin-bottom:8px}.crumbs{color:var(--ch-muted);padding:18px 0 0;font-size:.86rem}.crumbs ol{flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;display:flex}.crumbs a{color:var(--ch-muted);text-decoration:none}.crumbs a:hover{color:var(--ch-primary-dark);text-decoration:underline}.crumbs [aria-current=page]{color:var(--ch-ink);font-weight:600}.answer-first{background:var(--ch-surface);border-left:3px solid var(--ch-primary);border-radius:0 var(--ch-radius) var(--ch-radius) 0;margin-bottom:28px;padding:20px 22px}.answer-first p{color:var(--ch-ink);margin:0;font-size:1.03rem}.kicker{letter-spacing:.09em;text-transform:uppercase;color:var(--ch-accent);margin:0 0 8px;font-size:.78rem;font-weight:700}.meta{color:var(--ch-muted);margin:0 0 26px;font-size:.9rem}.note{background:var(--ch-accent-soft);border-radius:var(--ch-radius);color:var(--ch-ink);margin-top:34px;padding:16px 18px;font-size:.93rem}.prose table{border-collapse:collapse;width:100%;margin:24px 0;font-size:.95rem}.prose caption{color:var(--ch-muted);text-align:left;margin-bottom:10px;font-size:.88rem}.prose th,.prose td{text-align:left;vertical-align:top;border-bottom:1px solid var(--ch-line);padding:11px 13px}.prose thead th{background:var(--ch-surface);color:var(--ch-ink);border-bottom:2px solid var(--ch-line);font-weight:650}.prose tbody tr:last-child td{border-bottom:0}@media(max-width:640px){body{font-size:16px}.wrap{padding-left:18px;padding-right:18px}.prose table{font-size:.9rem}.prose th,.prose td{padding:9px 10px}}.calc{border:1px solid var(--ch-line);border-radius:var(--ch-radius-lg);box-shadow:var(--ch-shadow);background:#fff;padding:26px 28px 28px}.calc-form{margin:0}.field-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 22px;display:grid}.field{flex-direction:column;gap:6px;min-width:0;display:flex}.field label{color:var(--ch-ink);font-size:.92rem;font-weight:600}.field input,.field select{width:100%;min-height:48px;font:inherit;color:var(--ch-ink);border:1px solid var(--ch-line);border-radius:var(--ch-radius);background:#fff;padding:11px 13px;font-size:1rem}.field input:hover,.field select:hover{border-color:var(--ch-muted)}.field input:focus,.field select:focus{border-color:var(--ch-primary)}.hint{color:var(--ch-muted);margin:0;font-size:.83rem}.calc-actions{flex-wrap:wrap;gap:12px;margin-top:24px;display:flex}.calc-privacy{color:var(--ch-muted);margin:16px 0 0;font-size:.85rem}.calc-errors{border-radius:var(--ch-radius);color:var(--ch-danger);background:#fef2f2;border:1px solid #fecaca;margin-top:22px;padding:16px 18px}.calc-errors .errors-title{margin:0 0 8px;font-weight:650}.calc-errors ul{margin:0;padding-left:20px}.calc-results{border-top:1px solid var(--ch-line);margin-top:26px;padding-top:26px}.result-headline{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-bottom:22px;display:grid}.result-label{color:var(--ch-muted);margin-bottom:4px;font-size:.85rem;display:block}.result-value{letter-spacing:-.02em;color:var(--ch-ink);font-size:clamp(1.5rem,1.2rem + 1.4vw,2.1rem);line-height:1.15;display:block}.result-grid{background:var(--ch-line);border:1px solid var(--ch-line);border-radius:var(--ch-radius);grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;display:grid;overflow:hidden}.result-grid>div{background:#fff;padding:14px 16px}.result-grid dt{color:var(--ch-muted);margin-bottom:3px;font-size:.85rem}.result-grid dd{color:var(--ch-ink);margin:0;font-size:1.02rem;font-weight:600}.result-assumptions{background:var(--ch-surface);border-radius:var(--ch-radius);margin-top:22px;padding:18px 20px}.result-assumptions h3{color:var(--ch-ink);margin:0 0 10px;font-size:1rem}.result-assumptions ul{margin:0 0 12px;padding-left:20px;font-size:.94rem}.result-assumptions li{margin-bottom:6px}.result-assumptions p{margin:0;font-size:.92rem}@media(max-width:720px){.calc{padding:20px 18px 22px}.field-grid,.result-headline,.result-grid{grid-template-columns:minmax(0,1fr)}.calc-actions .btn{flex:100%}}.hero{background:linear-gradient(180deg,var(--ch-primary-soft) 0%,#fff 100%);border-bottom:1px solid var(--ch-line);padding:60px 0 40px}.hero-inner{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center;gap:40px;display:grid}.hero h1{letter-spacing:-.028em;color:var(--ch-ink);margin:0 0 16px;font-size:clamp(2rem,1.4rem + 2.6vw,3.1rem);line-height:1.12}.hero-lead{color:var(--ch-body);max-width:56ch;margin:0 0 26px;font-size:clamp(1.02rem,.98rem + .25vw,1.16rem)}.hero-actions{flex-wrap:wrap;gap:12px;display:flex}.hero-card{border:1px solid var(--ch-line);border-radius:var(--ch-radius-lg);box-shadow:var(--ch-shadow);background:#fff;padding:22px 24px}.hero-card-label{color:var(--ch-muted);margin-bottom:16px;font-size:.84rem;display:block}.hero-card-row{border-bottom:1px solid var(--ch-line);color:var(--ch-body);justify-content:space-between;align-items:baseline;gap:16px;padding:10px 0;font-size:.96rem;display:flex}.hero-card-row strong{color:var(--ch-ink);font-variant-numeric:tabular-nums;font-size:1.12rem}.hero-card-row-total{border-bottom:0}.hero-card-row-total strong{color:var(--ch-primary-dark)}.task-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.task-card{border:1px solid var(--ch-line);border-radius:var(--ch-radius-lg);transition:border-color var(--ch-transition),transform var(--ch-transition);background:#fff;padding:20px 22px;text-decoration:none;display:block}.task-card:hover{border-color:var(--ch-primary);transform:translateY(-2px)}.task-card h3{color:var(--ch-primary-dark);letter-spacing:-.01em;margin:0 0 6px;font-size:1.06rem}.task-card p{color:var(--ch-body);margin:0;font-size:.95rem}.boundary-note{background:var(--ch-surface);border:1px solid var(--ch-line);border-radius:var(--ch-radius-lg);padding:26px 28px}.boundary-note h2{color:var(--ch-ink);margin:0 0 14px;font-size:1.24rem}.boundary-note ul{margin:0;padding-left:20px}.boundary-note li{margin-bottom:9px}.boundary-link{margin:16px 0 0}@media(max-width:860px){.hero{padding:40px 0 30px}.hero-inner{grid-template-columns:minmax(0,1fr);gap:28px}.task-grid{grid-template-columns:minmax(0,1fr)}}.guide-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.guide-card{border:1px solid var(--ch-line);border-radius:var(--ch-radius-lg);transition:border-color var(--ch-transition),transform var(--ch-transition);background:#fff;padding:22px 24px;text-decoration:none;display:block}.guide-card:hover{border-color:var(--ch-primary);transform:translateY(-2px)}.guide-meta{letter-spacing:.04em;text-transform:uppercase;color:var(--ch-muted);margin-bottom:6px;font-size:.78rem;font-weight:600;display:block}.guide-card h2,.guide-card h3{color:var(--ch-primary-dark);letter-spacing:-.01em;margin:0 0 6px;font-size:1.06rem}.guide-card p{color:var(--ch-body);margin:0;font-size:.95rem}.section-cta{flex-wrap:wrap;gap:12px;margin:26px 0 0;display:flex}.guide-d1{border-top:1px solid var(--ch-line);margin-top:40px;padding-top:32px}.guide-d1 h2{color:var(--ch-primary-dark);letter-spacing:-.01em;margin:0 0 6px;font-size:1.25rem}.guide-d1-note{color:var(--ch-muted);margin:0 0 18px;font-size:.92rem}.guide-d1-list{margin:0;padding:0;list-style:none}.guide-d1-list:empty:after{content:"Nothing published outside a site build yet. The guides above are the current set.";border:1px dashed var(--ch-line);border-radius:var(--ch-radius);color:var(--ch-muted);padding:18px 20px;font-size:.92rem;display:block}.guide-d1-item{border-top:1px solid var(--ch-line)}.guide-d1-item:first-child{border-top:0}.guide-d1-item a{color:inherit;padding:16px 2px;text-decoration:none;display:block}.guide-d1-item a:hover .guide-d1-title{color:var(--ch-primary)}.guide-d1-date{letter-spacing:.04em;text-transform:uppercase;color:var(--ch-muted);font-size:.78rem;font-weight:600;display:block}.guide-d1-title{color:var(--ch-primary-dark);letter-spacing:-.01em;margin:4px 0;font-size:1.05rem;font-weight:600;display:block}.guide-d1-desc{color:var(--ch-body);margin:0;font-size:.94rem}@media(max-width:860px){.guide-grid{grid-template-columns:minmax(0,1fr)}}.checklist{counter-reset:step;margin:0;padding:0;list-style:none}.checklist>li{border:1px solid var(--ch-line);border-radius:var(--ch-radius-lg);counter-increment:step;background:#fff;margin-bottom:14px;padding:20px 22px}.checklist>li p{margin:0}.checklist-head{justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:8px;display:flex}.checklist-head h2{margin:0;font-size:1.08rem}.who{background:var(--ch-surface);border:1px solid var(--ch-line);color:var(--ch-muted);white-space:nowrap;border-radius:999px;flex:none;padding:3px 10px;font-size:.76rem;font-weight:600}.who-electrician{background:var(--ch-accent-soft);color:var(--ch-accent);border-color:#fde68a}@media(max-width:560px){.checklist-head{flex-direction:column;gap:8px}}.source-item{margin-bottom:30px}.source-item h2{margin:0 0 4px;font-size:1.1rem}.source-meta{color:var(--ch-muted);margin:0 0 10px;font-size:.85rem}.source-item ul{margin:0 0 10px;padding-left:20px}.source-item li{margin-bottom:6px}.source-link{margin:0;font-size:.87rem}.source-link a{word-break:break-all}:root{--ch-primary: #0f766e;--ch-primary-dark: #115e59;--ch-primary-soft: #ccfbf1;--ch-accent: #b45309;--ch-accent-soft: #fef3c7;--ch-ink: #0b1220;--ch-body: #334155;--ch-muted: #64748b;--ch-line: #e2e8f0;--ch-surface: #f8fafc;--ch-ok: #15803d;--ch-warn: #b45309;--ch-danger: #b91c1c;--ch-radius: 6px;--ch-radius-lg: 10px;--ch-shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .04);--ch-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;--ch-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--ch-transition: .16s ease}
