:root{color-scheme:dark;--bg:#061426;--panel:#102238;--line:#29425a;--text:#eaf5ff;--muted:#a6bed0;--cyan:#60e2dc;--blue:#87bfff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,Segoe UI,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.wrap{max-width:1160px;margin:auto;padding:0 24px}header{position:sticky;top:0;z-index:20;background:#061426ed;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.head{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px}.logo{font-weight:900;letter-spacing:-.045em;font-size:26px;white-space:nowrap}.logo b{color:var(--cyan)}nav{display:flex;gap:20px;flex-wrap:wrap;font-size:14px;color:#c8dbe7}nav a:hover,.langs a.active{color:var(--cyan)}.langs{display:flex;gap:10px;font-size:13px}.langs a{border:1px solid var(--line);border-radius:8px;padding:5px 8px}.hero{padding:96px 0 84px;position:relative;overflow:hidden;background:radial-gradient(ellipse at 80% 15%,#164d65 0%,transparent 43%),linear-gradient(145deg,#07172b,#0c2032)}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--cyan)}h1{font-size:clamp(38px,5.6vw,72px);line-height:1.08;max-width:920px;letter-spacing:-.055em;margin:19px 0 25px}h2{font-size:clamp(29px,3.2vw,43px);letter-spacing:-.035em;line-height:1.18;margin:0 0 18px}h3{font-size:20px;margin:0 0 12px}.lead{max-width:790px;font-size:20px;color:#c1d5e3}.buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:11px;padding:13px 21px;border:1px solid var(--cyan);background:var(--cyan);color:#04222b;font-weight:800}.btn.alt{background:transparent;color:var(--text);border-color:#4c6678}.section{padding:82px 0;border-top:1px solid #19344b}.section.alt{background:#091a2d}.intro{max-width:800px;color:var(--muted);font-size:17px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:35px}.card,.demo-box{background:var(--panel);border:1px solid var(--line);border-radius:19px;padding:26px}.card p{color:var(--muted);margin:0}.card .icon{display:inline-flex;font-size:25px;color:var(--cyan);margin-bottom:15px}.demo-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:20px;margin-top:30px}.house{width:100%;height:auto}.sensor{cursor:pointer;outline:none}.sensor circle{fill:var(--cyan);stroke:#eaffff;stroke-width:2}.sensor text{fill:white;font-size:13px;pointer-events:none}.sensor.active circle{fill:#ff735f;stroke:#ffd2c8;animation:pulse .75s infinite alternate}@keyframes pulse{to{stroke-width:8}}.signal{stroke:#ff735f;stroke-width:4;stroke-dasharray:8 10;fill:none;opacity:0}.alert .signal{opacity:1;animation:dash 1s linear infinite}@keyframes dash{to{stroke-dashoffset:-36}}.status{padding:13px 16px;border:1px solid #2e6a66;border-radius:11px;color:#9cf4d3;background:#103b38;margin:15px 0}.alert .status{background:#4a242b;color:#ffd3cc;border-color:#b95353}.tg{background:#142e45;border:1px solid #345a73;border-radius:14px;padding:20px;margin-top:22px}.tg p{color:#c4d6e2}.tg .message{display:none;padding:14px;border-radius:10px;background:#244a5f}.alert .tg .message{display:block}.small{font-size:13px;color:var(--muted)}.demo-actions{display:flex;gap:10px;flex-wrap:wrap}.demo-actions button{padding:11px 16px;border-radius:9px;border:1px solid #426176;background:#25445b;color:white}.demo-actions button:first-child{background:var(--cyan);color:#04222b;border-color:var(--cyan);font-weight:800}.field{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:20px 0}.field input{width:110px;padding:10px;border-radius:9px;border:1px solid #557083;background:#091b2b;color:white}.result{border-radius:13px;background:#183d4b;border:1px solid #347e85;padding:20px;margin-top:24px}.result strong{color:var(--cyan);font-size:22px}.contact{background:linear-gradient(135deg,#0c2d3b,#0b1a2e)}footer{border-top:1px solid var(--line);padding:30px 0;color:var(--muted);font-size:14px}footer a{color:var(--cyan)}@media(max-width:900px){.head{flex-wrap:wrap;padding-top:12px;padding-bottom:12px}nav{order:3;width:100%;gap:13px}.demo-grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr}.hero{padding:72px 0}.section{padding:62px 0}}@media(max-width:520px){.wrap{padding:0 17px}nav{font-size:12px}.logo{font-size:22px}.demo-box{padding:15px}.lead{font-size:18px}}