:root{color-scheme:dark;--bg:#071017;--surface:#0d1820;--border:#29404c;--text:#f2f7f5;--muted:#b5c2c8;--green:#46ddb0;--amber:#f0b84c;--font:'Manrope',system-ui,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 var(--font)}a{color:inherit}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--amber);outline-offset:4px}h1,h2,p{margin:0}h1{font-size:clamp(28px,3vw,44px);line-height:1.2;letter-spacing:-.035em;margin:8px 0 14px;max-width:720px}h2{font-size:22px;line-height:1.3;letter-spacing:-.02em}.topbar,main,footer{max-width:1440px;margin:auto;padding:24px 40px}.topbar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);gap:20px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:23px;letter-spacing:-.04em}.brand svg{width:33px;height:28px;stroke:var(--green);fill:none;stroke-width:3}.brand span{font-size:11px;letter-spacing:.12em;border:1px solid var(--border);border-radius:5px;padding:3px 6px;margin-left:8px;color:var(--muted)}.button{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:9px;padding:10px 16px;text-decoration:none;font-weight:700;font-size:14px;text-align:center}.primary{background:var(--green);color:#06241b;border:1px solid var(--green)}.primary:hover{background:#74f0c6}.secondary{border:1px solid var(--border);background:#142630;color:var(--text)}.secondary:hover{border-color:var(--green)}.intro{display:flex;align-items:center;justify-content:space-between;gap:30px;margin:28px 0 34px}.intro p:not(.eyebrow){color:var(--muted);max-width:710px}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-weight:800;font-size:11px;color:var(--green)}.demo-label{white-space:nowrap;font-size:12px;font-weight:700;color:#f6cf87;background:#30271b;border:1px solid #635034;padding:9px 12px;border-radius:6px}.workspace{display:grid;grid-template-columns:265px minmax(0,1fr);gap:24px;align-items:start}.controls{display:flex;flex-direction:column;gap:15px;padding:23px;background:var(--surface);border:1px solid var(--border);border-radius:14px}.controls h2{font-size:20px}.controls p{color:var(--muted);font-size:13px;margin-top:8px}.controls fieldset{margin:0;padding:0;border:0}.controls legend{font-weight:700;font-size:13px;margin-bottom:8px}.scenarios{display:grid;gap:7px}.scenarios button{text-align:left;border:1px solid var(--border);border-radius:8px;padding:10px 12px;background:transparent;color:var(--text);font-weight:700}.scenarios button span{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:2px}.scenarios button[aria-pressed=true]{border-color:var(--green);background:#10362e}.range-label{display:flex;justify-content:space-between;font-weight:700;font-size:13px;margin-top:6px}.range-label output{color:var(--green)}input[type=range]{width:100%;accent-color:var(--green);min-height:28px;margin:0}.select-label{font-size:13px;font-weight:700}select{padding:10px;background:#142630;border:1px solid var(--border);border-radius:8px;color:var(--text);width:100%}.paired{display:grid;grid-template-columns:1fr 1fr;gap:7px}.paired .button{padding:8px;font-size:12px}.controls .status{font-size:12px;min-height:38px;margin:0;color:#d9e7e8}.temporary-note{border-top:1px solid var(--border);padding-top:18px;font-size:13px}.text-button{background:none;border:0;padding:12px 0 0;color:var(--green);font-weight:700;font-size:13px;text-align:left;min-height:44px}.monitor{min-width:0;border:1px solid var(--border);border-radius:14px;padding:24px;background:linear-gradient(135deg,#11242c,#0b151d 55%)}.monitor-top{display:flex;align-items:center;justify-content:space-between;gap:20px}.monitor-top h2{margin-top:6px}.clock{font:500 25px 'Oswald',sans-serif;font-variant-numeric:tabular-nums;color:var(--muted)}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:22px 0;border-block:1px solid var(--border);padding:16px 0}.metrics>div>span{display:block;font-size:12px;color:var(--muted)}.metrics strong{display:block;margin-top:4px;font:500 27px 'Oswald',sans-serif;font-variant-numeric:tabular-nums}.metrics small{font:12px var(--font);color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.person{border:1px solid var(--border);border-top:3px solid var(--zone);border-radius:10px;background:#0b141b;padding:17px;min-width:0}.person-top{display:flex;justify-content:space-between;gap:5px}.person h3{font-size:14px;margin:0}.person-id{color:var(--muted);font-size:11px}.reading{font:500 clamp(36px,4vw,56px)/1.2 'Oswald',sans-serif;font-variant-numeric:tabular-nums;color:var(--zone);margin-top:12px}.reading small{font:12px var(--font);color:var(--muted);margin-left:5px}.zone-label{font-size:12px;font-weight:700;min-height:22px;margin-top:3px}.person svg{width:100%;height:45px;display:block;margin:12px 0;overflow:visible}.person polyline{fill:none;stroke:var(--zone);stroke-width:2;vector-effect:non-scaling-stroke}.person-state{font-size:11px;color:var(--muted);padding-top:9px;border-top:1px solid var(--border)}.person.alert{box-shadow:inset 0 0 0 1px #f25a5a}.person.alert .person-state{color:#ff9b9b}.person.no-signal{border-color:#65717b}.monitor-note{font-size:12px;color:var(--muted);margin:20px 0 0;max-width:770px}.next-step{display:flex;align-items:center;justify-content:space-between;gap:35px;margin-top:34px;padding:28px 0;border-block:1px solid var(--border)}.next-step h2{margin:8px 0 16px}.compatibility{font-size:13px;color:var(--muted);max-width:700px}.compatibility strong{color:var(--text)}.compatibility[data-state=unsupported] strong,.compatibility[data-state=insecure] strong{color:#f6cf87}footer{display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted);padding-bottom:30px}.skip{position:absolute;top:-80px;left:20px;padding:12px;background:var(--green);color:#071017;z-index:3}.skip:focus{top:10px}
@media(min-width:1500px){.reading{font-size:58px}}
@media(max-width:1100px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.intro{align-items:flex-start;flex-direction:column;gap:15px}.topbar,main,footer{padding-inline:25px}}
@media(max-width:740px){.workspace{grid-template-columns:1fr}.controls{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:18px}.controls>div:first-child,.controls fieldset,.controls .range-label,.controls input,.controls .temporary-note,.controls .status{grid-column:1/-1}.scenarios{grid-template-columns:repeat(3,1fr)}.scenarios button{font-size:12px;padding:9px 6px}.scenarios button span{display:none}.select-label{align-self:center}.paired{grid-column:1/-1}.monitor{padding:17px}.metrics{gap:10px}.metrics>div>span{font-size:11px}.topbar,main,footer{padding-inline:16px}.topbar .button{font-size:12px;max-width:155px;padding:9px}.brand{font-size:19px}.brand span{display:none}.next-step{align-items:flex-start;flex-direction:column;gap:20px}.reading{font-size:46px}.person{padding:13px}.person h3{font-size:13px}.person-id{display:none}footer{flex-wrap:wrap}.intro{margin-top:10px}.controls>#signal{grid-column:1/-1}.demo-label{white-space:normal}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}