:root{color:#172033;font-synthesis:none;background:#f4f7fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at 0 0,#e7f2ff 0,#f7f9fc 42%,#f2f5fa 100%);min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}a{color:inherit}.shell{min-height:100vh}.topbar{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);z-index:5;background:#ffffffe0;border-bottom:1px solid #e5eaf2;justify-content:space-between;align-items:center;gap:20px;padding:20px 32px;display:flex;position:sticky;top:0}.brand{align-items:center;gap:12px;font-size:20px;font-weight:800;display:flex}.cow{color:#fff;background:#111827;border-radius:12px;place-items:center;width:38px;height:38px;font-size:21px;display:grid}.container{max-width:1180px;margin:0 auto;padding:38px 24px 56px}.hero{justify-content:space-between;align-items:end;gap:24px;margin-bottom:26px;display:flex}.hero h1{letter-spacing:-.03em;margin:0;font-size:34px}.muted{color:#6f7b90}.btn{cursor:pointer;border:0;border-radius:12px;padding:11px 16px;font-weight:700;transition:all .18s}.btn:hover{transform:translateY(-1px)}.btn-primary{color:#fff;background:#111827}.btn-light{color:#273247;background:#eef2f7}.btn-success{color:#fff;background:#16a34a}.btn-danger{color:#fff;background:#ef4444}.btn-warning{color:#713f12;background:#facc15}.btn-rule-inactive{opacity:.5}.btn-rule-active{opacity:1;box-shadow:inset 0 0 0 1px}.grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;display:grid}.card{background:#fffffff0;border:1px solid #e4e9f1;border-radius:20px;padding:22px;box-shadow:0 16px 40px #2d3f5b12}.device-title{justify-content:space-between;align-items:center;gap:12px;display:flex}.device-title h3{margin:0;font-size:19px}.badge{border-radius:999px;align-items:center;gap:7px;padding:7px 10px;font-size:12px;font-weight:800;display:inline-flex}.online{color:#16794a;background:#ecfdf3}.offline{color:#697386;background:#f1f3f6}.dot{background:currentColor;border-radius:50%;width:8px;height:8px}.usage-box{background:#f7f9fc;border:1px solid #e7ebf2;border-radius:16px;grid-template-columns:minmax(120px,.8fr) minmax(150px,1.2fr);gap:18px;margin:18px 0;padding:16px;display:grid}.usage-label{letter-spacing:.08em;text-transform:uppercase;color:#7a8598;font-size:11px;font-weight:800}.usage-value{letter-spacing:-.03em;color:#172033;margin-top:4px;font-size:25px;font-weight:900}.usage-date{margin-top:3px;font-size:12px}.usage-history{align-content:start;gap:6px;display:grid}.usage-day{color:#667085;justify-content:space-between;gap:12px;font-size:12px;display:flex}.usage-day strong{color:#344054}.meta{color:#667085;gap:8px;margin:18px 0;font-size:13px;display:grid}.meta strong{color:#344054}.empty{text-align:center;padding:48px 24px}.pairing{color:#fff;background:linear-gradient(135deg,#101827,#263852);margin-bottom:22px}.pair-code{letter-spacing:.14em;margin:12px 0 8px;font-size:34px;font-weight:900}.auth-page{place-items:center;min-height:100vh;padding:24px;display:grid}.auth-card{background:#fff;border:1px solid #e4e9f1;border-radius:24px;width:min(100%,430px);padding:30px;box-shadow:0 22px 60px #2d3f5b1f}.auth-card h1{margin:0 0 7px;font-size:28px}.field{gap:7px;margin-top:16px;display:grid}.field label{color:#44516a;font-size:13px;font-weight:800}.field input{background:#fbfcfe;border:1px solid #d8dee9;border-radius:12px;outline:none;width:100%;padding:12px 13px}.field input:focus{border-color:#7b8da8;box-shadow:0 0 0 3px #e9eef6}.error{color:#b42318;margin-top:4px;font-size:12px}.full{width:100%;margin-top:20px}.auth-foot{text-align:center;color:#667085;margin-top:18px;font-size:14px}.flash{color:#16794a;background:#ecfdf3;border-radius:12px;margin-bottom:16px;padding:12px 14px;font-weight:700}@media (width<=720px){.topbar{padding:16px 18px}.container{padding:26px 16px 40px}.hero{flex-direction:column;align-items:flex-start}.hero h1{font-size:29px}.pair-code{font-size:26px}.usage-box{grid-template-columns:1fr}}