:root{color-scheme:dark;--bg:#111b18;--text:#f3f1e8;--muted:#9faea5;--line:#ffffff16}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 100% 0,#33473955,transparent 48%),var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}main{max-width:540px;margin:auto;padding:calc(24px + env(safe-area-inset-top)) 22px calc(24px + env(safe-area-inset-bottom))}header{display:flex;justify-content:space-between;align-items:center;padding-bottom:25px;border-bottom:1px solid var(--line)}.brand{display:grid;grid-template-columns:34px 1fr;column-gap:10px;align-items:center;text-decoration:none;color:var(--text);font-size:15px;font-weight:750;letter-spacing:3px}.brand img{grid-row:span 2}.brand span{font-size:8px;letter-spacing:1.4px;font-weight:500;color:var(--muted)}.date{text-transform:uppercase;color:var(--muted);font-size:11px;letter-spacing:1px}.welcome{padding:29px 0 20px}.eyebrow{font-size:9px;letter-spacing:2px;color:#bac6b1;display:flex;gap:8px;align-items:center}.eyebrow span{height:1px;width:22px;background:#b2c4a3}h1{font-size:clamp(37px,10vw,49px);line-height:1.08;letter-spacing:-2px;margin:17px 0 11px;font-weight:500}h1 em{font-family:Georgia,serif;font-weight:400;color:#c5d6af}.welcome p{color:var(--muted);font-size:13px;margin:0 0 21px}.connection{display:flex;align-items:center;font-size:11px;color:var(--muted);gap:8px}.dot{width:6px;height:6px;border-radius:50%;background:#bfaa79}.dot.live{background:#b2cf91;box-shadow:0 0 9px #b2cf9144}button{margin-left:auto;width:44px;height:44px;border:1px solid var(--line);background:#ffffff04;color:#c5d6af;border-radius:50%;cursor:pointer;display:grid;place-items:center}button svg{width:18px;height:18px}button:focus-visible,a:focus-visible{outline:2px solid #c5d6af;outline-offset:4px}button:disabled{opacity:.5}.readings{display:grid;gap:12px}.card{--accent:#c5d6af;background:linear-gradient(120deg,#ffffff06,transparent),#1a2621;border:1px solid #ffffff13;border-radius:20px;padding:16px 19px;overflow:hidden;position:relative}.card:before{content:"";position:absolute;top:45px;right:-30px;width:120px;height:120px;border:1px solid var(--accent);opacity:.05;border-radius:50%;pointer-events:none}.water{--accent:#a7cbd2}.floor{--accent:#c6d6a6}.boiler{--accent:#efb58e}.radiators{--accent:#d7c4a1}.card-top{display:flex;align-items:center;gap:9px}.symbol{font-size:10px;color:var(--accent);border:1px solid #ffffff18;width:24px;height:24px;display:grid;place-items:center;border-radius:8px;font-variant-numeric:tabular-nums}.tag{font-size:8px;font-weight:650;letter-spacing:1.6px;color:var(--accent)}.availability{margin-left:auto;color:var(--muted);font-size:9px}.reading{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 0 13px}h2{font-size:18px;font-weight:500;line-height:1.3;margin:0;letter-spacing:-.4px}h2 span{font-size:10px;font-weight:400;letter-spacing:0;color:var(--muted)}.number{display:flex;align-items:baseline;color:var(--accent);gap:4px;white-space:nowrap}.number strong{font-size:clamp(36px,10vw,47px);font-weight:400;line-height:1;letter-spacing:-2px;font-variant-numeric:tabular-nums}.number>span{font-size:17px;font-weight:300}.card-bottom{border-top:1px solid var(--line);padding-top:9px;display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--muted);font-size:9px;min-height:25px}.card-bottom svg{width:49px;height:15px;color:var(--accent);opacity:.5}.card.offline .number{opacity:.4}.card.offline .availability{color:#d6ad86}footer{text-align:center;margin-top:28px;color:var(--muted)}footer>span{font-size:8px;letter-spacing:1.2px}footer b{color:#c5d6af;margin:0 4px}footer p{font-size:10px;margin-top:12px}footer .note{font-size:9px;line-height:1.6;color:#788b80}@media(min-width:700px){main{padding-top:45px}.welcome{padding-top:35px}header{padding-bottom:30px}}@media(prefers-reduced-motion:no-preference){.card{animation:enter .5s both}.card:nth-child(2){animation-delay:.05s}.card:nth-child(3){animation-delay:.1s}.card:nth-child(4){animation-delay:.15s}@keyframes enter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}}

/* The boiler is the primary reading; secondary circuits stay compact. */
.primary{padding:20px 22px;background:radial-gradient(ellipse at 100% 100%,#bc784b24,transparent 70%),#27302a;border-color:#efb58e38}
.primary .reading{align-items:flex-start;flex-direction:column;gap:18px;padding:18px 0}
.primary h2{font-size:21px}
.primary h2 span{font-size:11px}
.primary .number strong{font-size:clamp(64px,20vw,84px);letter-spacing:-4px;line-height:.95}
.primary .number>span{font-size:28px;margin-left:6px}
.primary .card-bottom{padding-top:12px;font-size:10px}
.card:not(.primary){padding:12px 17px;border-radius:16px}
.card:not(.primary) .symbol,.card:not(.primary) .tag,.card:not(.primary) .card-bottom svg{display:none}
.card:not(.primary) .card-top{position:absolute;right:17px;top:14px}
.card:not(.primary) .availability{font-size:8px}
.card:not(.primary) .reading{padding:5px 0 8px;align-items:center}
.card:not(.primary) h2{font-size:16px;max-width:55%}
.card:not(.primary) .number{padding-top:13px}
.card:not(.primary) .number strong{font-size:32px;letter-spacing:-1px}
.card:not(.primary) .number>span{font-size:13px}
.card:not(.primary) .card-bottom{padding-top:6px;min-height:20px;font-size:8px}
.welcome{padding-top:23px;padding-bottom:16px}
.welcome h1{font-size:36px;margin-top:13px}
.welcome p{margin-bottom:12px}