:root{color-scheme:dark;--bg:#0d1116;--panel:#171d24;--panel2:#202831;--text:#f4f7f8;--muted:#aab5bd;--line:#2b3640;--teal:#22d3c5;--teal2:#0f938b;--orange:#ff9f0a;--shell:min(1180px,calc(100% - 40px));font-family:Inter,-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 75% 0,#12292c 0,transparent 28%),var(--bg);color:var(--text);line-height:1.6}a{color:inherit}.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;z-index:9;background:var(--text);color:#000;padding:8px 12px}.shell{width:var(--shell);margin:auto}.nav{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:750;font-size:21px}.brand img{width:38px;height:38px;border-radius:10px}.nav-links{display:flex;gap:24px;align-items:center}.nav-links>a:not(.button){text-decoration:none;color:var(--muted)}.button{display:inline-flex;align-items:center;justify-content:center;padding:11px 18px;border-radius:13px;text-decoration:none;font-weight:700;border:1px solid transparent}.primary{background:var(--teal);color:#052421}.secondary{border-color:var(--line);background:#151b21}.hero{min-height:720px;display:grid;grid-template-columns:1.05fr .7fr;align-items:center;gap:80px;padding:70px 0 95px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--teal);font-size:13px;font-weight:800}.hero h1,.article h1{font-size:clamp(48px,7vw,82px);line-height:1.03;letter-spacing:-.045em;margin:18px 0 24px}.lede{font-size:clamp(19px,2vw,24px);color:var(--muted);max-width:760px}.actions{display:flex;gap:12px;margin:32px 0}.trust{display:flex;flex-wrap:wrap;gap:9px}.trust span{background:#161d23;border:1px solid var(--line);padding:6px 10px;border-radius:999px;color:#c9d1d6;font-size:13px}.panel-wrap{display:flex;justify-content:center}.panel-wrap img{width:min(100%,360px);filter:drop-shadow(0 35px 55px #0009);border-radius:18px}.section{padding:110px 0}.tint{background:#121820;border-block:1px solid #202b35}.section-heading{max-width:850px;margin-bottom:46px}.section h2,.article h2{font-size:clamp(33px,5vw,55px);line-height:1.08;letter-spacing:-.035em;margin:14px 0}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature-grid article,.guide-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:25px}.feature-grid b{font-size:32px;color:var(--teal);font-variant-numeric:tabular-nums}.feature-grid h3,.guide-card h3{margin:12px 0 7px;font-size:21px}.feature-grid p,.guide-card p,footer p{color:var(--muted);margin:0}.split{display:grid;grid-template-columns:.8fr 1.2fr;align-items:center;gap:70px}.split.reverse{grid-template-columns:1fr 1fr}.screen{width:100%;border-radius:20px;border:1px solid var(--line);box-shadow:0 32px 70px #0007}.screen.compact{width:min(360px,100%);justify-self:center}.checks{padding:0;list-style:none}.checks li{margin:10px 0;color:#ced7dc}.checks li:before{content:'✓';color:var(--teal);font-weight:900;margin-right:10px}.text-link{color:var(--teal);font-weight:750}.screens{display:grid;grid-template-columns:.45fr .75fr 1.4fr;gap:18px;align-items:start}.screens img{width:100%;border:1px solid var(--line);border-radius:18px;background:#1c232a}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.guide-card{text-decoration:none;transition:.18s transform,.18s border-color}.guide-card:hover{transform:translateY(-3px);border-color:var(--teal2)}.guide-card>span{color:var(--teal);font-size:12px;text-transform:uppercase;letter-spacing:.09em;font-weight:800}.guide-card strong{display:block;color:var(--teal);margin-top:18px}.article{width:min(850px,calc(100% - 40px));margin:0 auto;padding:90px 0 120px}.article>.guide-grid{width:min(1180px,calc(100vw - 40px));margin-left:50%;transform:translateX(-50%);margin-top:55px}.article section{margin:64px 0}.article section h2{font-size:34px}.article p,.article li{font-size:18px;color:#c0c9cf}.breadcrumbs{color:var(--muted);margin-bottom:34px}.source,aside{border-left:3px solid var(--teal);background:#142326;padding:20px 24px;border-radius:0 16px 16px 0}aside{margin-top:70px}.legal h1{font-size:60px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:50px;padding:60px 0}footer{border-top:1px solid var(--line);background:#0a0e12}.footer-grid>div{display:flex;flex-direction:column;align-items:flex-start;gap:10px}.footer-grid a:not(.brand){color:var(--muted)}@media(max-width:900px){.nav-links>a:not(.button){display:none}.hero,.split,.split.reverse{grid-template-columns:1fr}.hero{gap:45px}.panel-wrap{order:-1}.feature-grid,.guide-grid{grid-template-columns:1fr 1fr}.screens{grid-template-columns:1fr 1fr}.screens img:last-child{grid-column:1/-1}.article>.guide-grid{width:100%;margin-left:0;transform:none}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.feature-grid,.guide-grid,.screens,.footer-grid{grid-template-columns:1fr}.screens img:last-child{grid-column:auto}.hero{padding-top:35px}.section{padding:75px 0}.actions{flex-direction:column}.legal h1{font-size:46px}}
.release-preview{background:#172e36;color:#e9f6ff;border-block:1px solid #3b6071;padding:18px 0;font-size:1rem;line-height:1.6}.release-preview strong{display:block;margin-bottom:4px}.release-preview .shell{overflow-wrap:anywhere}
.charging-page{width:min(1000px,calc(100% - 40px));overflow-wrap:anywhere}.charging-page h1{font-size:clamp(2.4rem,6vw,4.5rem)}.charging-tool{background:var(--panel);border:1px solid var(--line);padding:clamp(18px,4vw,32px);border-radius:20px;margin-block:36px}.charging-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.charging-fields>div{min-width:0}.charging-fields label{display:block;font-weight:700;margin-bottom:8px}.charging-fields select{width:100%;min-width:0;min-height:48px;border:1px solid var(--line);border-radius:10px;padding:10px;background:var(--bg);color:var(--text);font:inherit}.charging-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}.charging-actions button{font:inherit;cursor:pointer;min-height:48px}.charging-tool :focus-visible{outline:3px solid var(--teal);outline-offset:4px}.charging-result{margin-top:32px;padding:24px;border-left:3px solid var(--teal);background:#142326;border-radius:0 14px 14px 0}.charging-result[data-result="safety"]{border-color:var(--orange)}.charging-result h2{font-size:clamp(1.4rem,3vw,2rem);line-height:1.2;margin:0 0 14px}.charging-result p{margin-top:0}.charging-result ol:empty{display:none}.charging-result [hidden],.charging-app[hidden]{display:none}.charging-page #charging-privacy,.charging-app figcaption{font-size:.9rem;color:var(--muted)}.charging-app{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}.charging-app>*{min-width:0}.charging-app h2{font-size:clamp(1.7rem,4vw,2.4rem)}.charging-app figure{margin:0}.charging-app img{width:100%;height:auto;border:1px solid var(--line);border-radius:16px}.charging-app figcaption{margin-top:12px}.charging-reference a{color:var(--teal)}@media(max-width:650px){.charging-fields,.charging-app{grid-template-columns:1fr}.charging-actions>.button{width:100%}.charging-result{padding:18px}}
.watts-tool{margin:36px 0;padding:28px;background:var(--panel);border:1px solid var(--line);border-radius:20px}.watts-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,9rem),1fr));gap:20px}.watts-fields label{display:block;margin-bottom:8px;font-size:1rem;font-weight:700}.watts-fields input,.watts-fields select{width:100%;min-width:0;min-height:48px;border:1px solid #526573;border-radius:10px;padding:10px 12px;background:var(--bg);color:var(--text);font:inherit;font-size:1rem}.watts-tool button{font:inherit;font-weight:700;cursor:pointer;min-height:48px}.watts-tool #watts-note{font-size:.875rem}.watts-result{padding-top:22px;margin-top:26px;border-top:1px solid var(--line)}.watts-result h2{font-size:clamp(25px,4vw,34px)}.watts-result p{margin-bottom:0}.watts-fields input[aria-invalid=true]{border-color:var(--orange)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--teal);outline-offset:4px}.comparison-disclosure{border-left:3px solid var(--teal);padding-left:20px}.article h1{overflow-wrap:anywhere}@media(max-width:560px){.watts-tool{padding:20px}}
.release-preview{margin-top:0;border-radius:0}.watts-page{padding-top:24px}.watts-page .breadcrumbs{margin-bottom:16px}.watts-page h1{font-size:clamp(30px,4vw,44px);line-height:1.12;margin:12px 0 16px}.watts-page .lede{font-size:1.125rem}.watts-page .watts-tool{margin-top:24px}.watts-page .eyebrow{font-size:.875rem}
.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:.5rem 0;list-style:none;margin:0;padding:0}.breadcrumbs li{font-size:1rem;overflow-wrap:anywhere}.breadcrumbs li+li::before{content:'/';padding:0 .6rem;color:var(--muted)}.breadcrumbs [aria-current=page]{color:var(--text)}.related-guides ul{padding-left:1.2rem}.related-guides li{margin:1.25rem 0}.related-guides a{color:var(--teal);text-underline-offset:.2em}.related-guides p{margin:.35rem 0 0;font-size:1rem}
@media(max-width:900px){.nav{height:auto;min-height:76px;flex-wrap:wrap;gap:12px;padding-block:16px}.nav-links{flex-wrap:wrap;gap:12px 20px;justify-content:flex-end}.nav-links>a:not(.button){display:inline-flex;align-items:center;min-height:44px}}@media(max-width:560px){.nav{align-items:flex-start}.nav-links{width:100%;justify-content:flex-start}.nav-links .button{width:100%}}
.plan-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.plan-card{display:flex;flex-direction:column;align-items:flex-start;padding:32px;border:1px solid var(--line);border-radius:20px;background:var(--panel);min-width:0}.plan-pro{border-color:var(--teal2)}.plan-card h3{font-size:1.6rem;margin:0}.plan-price{font-size:clamp(2rem,4vw,3rem);font-weight:750;line-height:1.2;margin:20px 0 14px;color:var(--text)}.plan-price span{display:block;font-size:1rem;font-weight:400;color:var(--muted);line-height:1.6;margin-top:8px}.plan-card>p:not(.plan-price){color:var(--muted);margin:0}.plan-card .checks{margin:20px 0 28px}.plan-card .button{margin-top:auto;min-height:48px}.plan-note{max-width:60rem;font-size:.875rem;color:var(--muted);margin:24px 0 36px}.purchase-questions{max-width:850px}.purchase-questions details{border-top:1px solid var(--line);padding:20px 0}.purchase-questions summary{font-size:1.1rem;font-weight:700;cursor:pointer;padding-right:12px}.purchase-questions p{color:#c0c9cf;font-size:1rem;max-width:70ch;margin-bottom:0}.purchase-questions summary:focus-visible{outline:3px solid var(--teal);outline-offset:4px}@media(max-width:560px){.plan-grid{grid-template-columns:1fr}.plan-card{padding:24px}.plan-card .button{width:100%}}