*,:before,:after{box-sizing:border-box}html,body{background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased;margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,sans-serif;line-height:1.6}.visually-hidden{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:10;background:var(--accent);color:var(--fg-on-accent);border-radius:0 0 8px;padding:10px 16px;font-weight:600;text-decoration:none;position:absolute;top:0;left:0;transform:translateY(-120%)}.skip-link:focus{transform:translateY(0)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (forced-colors:active){:focus-visible{outline:3px solid highlight}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:1ms!important;animation-duration:1ms!important}}.page-header{background:var(--surface-1);border-bottom:1px solid var(--border)}.page-header__inner{flex-wrap:wrap;align-items:baseline;gap:12px;max-width:46rem;margin:0 auto;padding:14px 20px;display:flex}.page-header__brand{color:var(--accent);align-items:center;gap:9px;font-size:20px;font-weight:700;text-decoration:none;display:inline-flex}.page-header__logo{width:28px;height:28px;display:block}.page-header__back{color:var(--fg-muted);font-size:14px}.page{max-width:46rem;margin:0 auto;padding:24px 20px 64px}.page h1{margin:8px 0 4px;font-size:clamp(24px,4vw,32px);line-height:1.25}.page h2{border-top:1px solid var(--border);margin:32px 0 8px;padding-top:8px;font-size:clamp(19px,3vw,22px)}.page h3{margin:20px 0 6px;font-size:16px}.page h4{margin:18px 0 4px;font-size:15px}.page p,.page li{font-size:16px}.page ul,.page ol{padding-left:1.4em}.page li{margin-bottom:6px}.page a{color:var(--accent)}.page a:hover{text-decoration:none}.page code{background:var(--surface-2);border:1px solid var(--border);border-radius:4px;padding:1px 5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}.page__lead{color:var(--fg-muted);margin-top:0;font-size:17px}.page__updated{color:var(--fg-muted);font-size:14px}.callout{background:var(--surface-2);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:8px;margin:20px 0;padding:14px 16px}.callout>:first-child{margin-top:0}.callout>:last-child{margin-bottom:0}.callout--warn{border-left-color:var(--status-warn)}.table-scroll{margin:16px 0;overflow-x:auto}.page table{border-collapse:collapse;width:100%;font-size:14px}.page caption{text-align:left;color:var(--fg-muted);padding-bottom:8px;font-size:14px}.page th,.page td{text-align:left;vertical-align:top;border-bottom:1px solid var(--border);padding:8px 10px}.page thead th{background:var(--surface-2);border-bottom:2px solid var(--border-strong)}.page-footer{border-top:1px solid var(--border);max-width:46rem;color:var(--fg-muted);margin:0 auto;padding:20px;font-size:14px}.page-footer nav{flex-wrap:wrap;gap:6px 16px;margin-bottom:8px;display:flex}.page-footer a{color:var(--accent)}.page-actions{flex-wrap:wrap;gap:12px;margin:24px 0;display:flex}.page-actions a{border:1px solid var(--border-strong);background:var(--surface-2);min-height:48px;color:var(--fg);border-radius:8px;align-items:center;padding:10px 18px;font-weight:600;text-decoration:none;display:inline-flex}.page-actions a.is-primary{background:var(--accent);border-color:var(--accent);color:var(--fg-on-accent)}.hero{background:var(--surface-1);border-bottom:1px solid var(--border)}.hero__inner{max-width:46rem;margin:0 auto;padding:40px 20px 36px}.hero__logo{border-radius:20px;width:96px;height:96px;margin:0 0 18px;display:block}.hero h1{margin:0 0 12px;font-size:clamp(28px,6vw,44px);line-height:1.15}.hero__claim{color:var(--fg-muted);max-width:34em;margin:0 0 24px;font-size:clamp(17px,2.6vw,20px)}.cards{grid-template-columns:1fr;gap:12px;margin:20px 0;display:grid}@media (min-width:620px){.cards{grid-template-columns:1fr 1fr}}.card{background:var(--surface-1);border:1px solid var(--border);border-radius:10px;padding:14px 16px}.card--wide{grid-column:1/-1}.card h3{margin:0 0 6px;font-size:16px}.card p{color:var(--fg-muted);margin:0;font-size:15px}.steps{counter-reset:step;margin:20px 0;padding:0;list-style:none}.steps>li{counter-increment:step;margin-bottom:20px;padding:0 0 0 46px;position:relative}.steps>li:before{content:counter(step);background:var(--accent);width:32px;height:32px;color:var(--fg-on-accent);border-radius:50%;place-items:center;font-size:16px;font-weight:700;display:grid;position:absolute;top:0;left:0}.steps h3{margin:4px 0;font-size:17px}.steps p{margin:0 0 6px}.sensor{background:var(--surface-1);border:1px solid var(--border);border-radius:10px;margin:28px 0;padding:18px 18px 6px}.sensor h3{margin-top:0;padding-top:0;font-size:19px}.sensor__meta{flex-wrap:wrap;gap:6px 8px;margin:0 0 12px;padding:0;list-style:none;display:flex}.sensor__meta li{background:var(--surface-2);border:1px solid var(--border);color:var(--fg-muted);border-radius:999px;margin:0;padding:3px 9px;font-size:13px}.sensor__meta strong{color:var(--fg)}.sensor__head{grid-template-columns:1fr;gap:0 20px;display:grid}@media (min-width:620px){.sensor__head{grid-template-columns:1fr 200px}.sensor__photo{grid-area:1/2/span 3;align-self:start}}.sensor__photo{margin:4px 0 14px}.sensor__photo img{aspect-ratio:4/3;object-fit:contain;padding:6px}.wiring-table td:first-child,.wiring-table th:first-child{white-space:nowrap}.figure{margin:16px 0}.figure img{background:var(--figure-bg);border:1px solid var(--border);border-radius:10px;width:100%;height:auto;display:block}.figure figcaption{color:var(--fg-muted);margin-top:8px;font-size:14px}.figure--narrow{max-width:24rem}.faq{border:1px solid var(--border);background:var(--surface-1);border-radius:8px;margin:12px 0}.faq summary{cursor:pointer;border-radius:8px;padding:12px 14px;font-weight:600}.faq summary:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.faq>:not(summary){padding:0 14px}.faq>:last-child{padding-bottom:12px}.toc{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;margin:24px 0;padding:14px 16px}.toc h2{text-transform:uppercase;letter-spacing:.05em;color:var(--fg-muted);border:0;margin:0 0 8px;padding:0;font-size:15px}.toc ol{columns:2;column-gap:24px;margin:0}@media (max-width:560px){.toc ol{columns:1}}kbd{text-align:center;min-width:1.6em;color:var(--fg);background:var(--surface-2);border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:4px;padding:2px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85em;display:inline-block}