:root{--ink:#17232a;--muted:#607079;--paper:#fbfcfd;--deep:#18313f;--blue:#3477a9;--cyan:#45b6c5;--teal:#458b82;--amber:#e2a441;--red:#b7594e;--line:#d5e1e5;--soft:#eef5f7;--warm:#faf3e5;--max:1450px;--shadow:0 16px 46px rgba(20,43,54,.12)}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.68}a{color:#286d95;text-underline-offset:.18em}a:hover{color:#9a622b}.wrap{width:min(var(--max),calc(100% - 36px));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:10px;background:#fff;padding:10px;z-index:100}
header{position:sticky;top:0;z-index:50;background:rgba(251,252,253,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.top{min-height:80px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-weight:900}.mark{width:46px;height:46px;border-radius:11px;background:linear-gradient(145deg,#17313f,#315a6b);position:relative;overflow:hidden}.mark:before{content:"⚡";position:absolute;left:11px;top:8px;color:#e2a441;font:900 23px/1 system-ui}.mark:after{content:"50";position:absolute;right:6px;bottom:6px;color:#dce8ec;font:900 11px/1 system-ui}
nav ul{display:flex;gap:9px;list-style:none;padding:0;margin:0;flex-wrap:wrap}nav a{text-decoration:none;color:var(--ink);font-size:.81rem;font-weight:780}.menu{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 11px;font-weight:800}
.hero{background:linear-gradient(120deg,#e5f3f6 0,#fbfcfd 44%,#eef2f9 72%,#faf2e2 100%);border-bottom:1px solid var(--line)}.heroGrid{display:grid;grid-template-columns:1.02fr .98fr;gap:54px;align-items:center;padding:72px 0}.eyebrow{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;font-weight:900;color:#99622b}h1,h2,h3{line-height:1.14;letter-spacing:-.028em}h1{font-size:clamp(2.45rem,6vw,4.8rem);margin:.23em 0 .29em}.hero p,.pageHero p{font-size:1.13rem;color:#596b75;max-width:900px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;padding:12px 18px;border-radius:999px;border:1px solid #aebec4;background:#fff;color:var(--ink);font-weight:850;text-decoration:none}.primary{background:var(--deep);border-color:var(--deep);color:#fff}
.gridviz{height:420px;position:relative;border-radius:22px;overflow:hidden;border:1px solid #c9dadd;background:linear-gradient(145deg,#102d39,#1d4b5d);box-shadow:var(--shadow)}.tower{position:absolute;left:70px;bottom:70px;width:100px;height:220px}.tower:before{content:"";position:absolute;left:44px;top:0;width:8px;height:220px;background:#c7d5d9;transform:skew(-6deg)}.tower:after{content:"";position:absolute;left:18px;right:18px;bottom:0;height:8px;background:#c7d5d9;box-shadow:0 -55px 0 #c7d5d9,0 -112px 0 #c7d5d9,0 -165px 0 #c7d5d9}.wire{position:absolute;height:3px;background:#88c9d1}.w1{left:119px;right:210px;top:128px}.w2{left:119px;right:210px;top:184px}.sub{position:absolute;right:48px;bottom:76px;width:155px;height:120px;border:6px solid #cbd7da;border-radius:8px}.sub:before{content:"STATION";position:absolute;left:33px;top:14px;color:#e8f0f2;font-size:.7rem;font-weight:900;letter-spacing:.11em}.sub:after{content:"";position:absolute;left:23px;right:23px;bottom:22px;height:32px;background:repeating-linear-gradient(90deg,#e2a441 0 7px,#3b5f6d 7px 14px)}.node{position:absolute;width:25px;height:25px;border-radius:50%;background:#45b6c5;box-shadow:0 0 0 7px rgba(69,182,197,.12)}.n1{left:48%;top:91px}.n2{left:43%;bottom:83px;background:#e2a441}.n3{right:185px;top:115px;background:#6c8ebd}.flow{position:absolute;left:38px;right:38px;bottom:43px;height:5px;background:linear-gradient(90deg,#45b6c5,#e2a441,#6c8ebd,#dbe7ea)}.tag{position:absolute;left:24px;top:20px;background:#f5fafb;color:#214b5a;border-radius:10px;padding:9px 13px;font-weight:850}.meters{position:absolute;right:50px;top:45px;display:grid;grid-template-columns:repeat(2,42px);gap:8px}.meters span{height:42px;border-radius:8px;border:2px solid #a8c1c8;background:#193e4e;display:grid;place-items:center;color:#e2a441;font-weight:900;font-size:.7rem}
.section{padding:62px 0}.soft{background:var(--soft)}.warm{background:var(--warm)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:23px;box-shadow:0 8px 24px rgba(31,42,49,.055)}.card h3{margin-top:0}.kicker{font-size:.74rem;text-transform:uppercase;letter-spacing:.11em;color:#99622b;font-weight:900}.pageHero{background:linear-gradient(120deg,#e8f3f5,#eef2f8,#faf1df);border-bottom:1px solid var(--line);padding:52px 0 43px}.pageHero h1{font-size:clamp(2.15rem,5vw,4rem);max-width:1120px}.breadcrumbs{padding-top:15px;font-size:.9rem;color:var(--muted)}.content{max-width:980px}.content p{font-size:1.045rem}.note{margin:26px 0;padding:18px 20px;border-left:5px solid var(--teal);background:#ebf7f4;border-radius:0 12px 12px 0}.warning{border-left-color:var(--red);background:#fff0ec}.related{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.related a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px;text-decoration:none;font-weight:800}.tool{max-width:900px;background:#fff;border:1px solid #cadade;border-radius:17px;padding:26px;box-shadow:var(--shadow)}.formgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field{display:flex;flex-direction:column;gap:6px}.field label{font-weight:800}.field input,.field select{padding:11px 12px;border:1px solid #a2b5bb;border-radius:8px;font:inherit}.result{margin-top:17px;padding:17px;background:#ebf7f4;border:1px solid #c4ddd8;border-radius:10px}.result strong{font-size:1.35rem;color:#34776e}
footer{background:#18313f;color:#dce8ec;margin-top:60px}.foot{display:grid;grid-template-columns:1.05fr 1.95fr;gap:40px;padding:46px 0}.footlinks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px 18px}.footlinks a{color:#f2f7f8;text-decoration:none}.fine{border-top:1px solid #405b69;padding:17px 0 26px;color:#b3c3ca;font-size:.89rem}.cookie{background:none;border:0;padding:0;color:inherit;text-decoration:underline;font:inherit;cursor:pointer}
@media(max-width:1180px){nav{display:none}.menu{display:block}nav.open{display:block;position:absolute;top:80px;left:0;right:0;background:#fbfcfd;padding:17px;border-bottom:1px solid var(--line)}nav.open ul{width:min(var(--max),calc(100% - 36px));margin:auto;display:grid;grid-template-columns:repeat(2,1fr)}.heroGrid{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.related{grid-template-columns:repeat(2,minmax(0,1fr))}.foot{grid-template-columns:1fr}}
@media(max-width:640px){.wrap{width:min(var(--max),calc(100% - 24px))}.grid,.grid2,.formgrid,.related{grid-template-columns:1fr}.footlinks{grid-template-columns:repeat(2,1fr)}.gridviz{height:350px}.section{padding:45px 0}}