:root{--ink:#1f2d35;--muted:#657680;--paper:#fbfcfd;--navy:#173b52;--blue:#287b9a;--teal:#2b9a8a;--amber:#e0a43b;--orange:#d96d3d;--violet:#6d6bb0;--red:#b84f4f;--line:#d7e1e6;--soft:#edf5f6;--warm:#fbf2e6;--white:#fff;--max:1450px;--shadow:0 16px 44px rgba(31,45,53,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.67}a{color:#176d85;text-underline-offset:.18em}a:hover{color:#a64b28}.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:78px;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;letter-spacing:-.025em}.mark{width:46px;height:46px;border-radius:12px;background:var(--navy);position:relative;overflow:hidden}.mark:before{content:"";position:absolute;width:8px;height:8px;border-radius:50%;background:var(--amber);left:8px;top:9px;box-shadow:22px 0 var(--teal),11px 20px var(--orange),0 28px var(--blue),28px 28px var(--violet)}.mark:after{content:"";position:absolute;inset:0;background:linear-gradient(32deg,transparent 46%,rgba(255,255,255,.8) 47% 51%,transparent 52%),linear-gradient(148deg,transparent 46%,rgba(255,255,255,.55) 47% 51%,transparent 52%);opacity:.8}
nav ul{display:flex;gap:14px;list-style:none;padding:0;margin:0;flex-wrap:wrap}nav a{text-decoration:none;color:var(--ink);font-size:.89rem;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(125deg,#eaf4f7 0,#fff6e8 50%,#efedf9 100%);border-bottom:1px solid var(--line);overflow:hidden}.heroGrid{display:grid;grid-template-columns:1.03fr .97fr;gap:54px;align-items:center;padding:72px 0}.eyebrow{font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;font-weight:900;color:var(--orange)}h1,h2,h3{line-height:1.14;letter-spacing:-.028em}h1{font-size:clamp(2.5rem,6vw,5rem);margin:.23em 0 .29em}.hero p,.pageHero p{font-size:1.13rem;color:#586c78;max-width:900px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:999px;border:1px solid #aebfc7;background:#fff;color:var(--ink);font-weight:850;text-decoration:none}.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.network{height:420px;position:relative;border-radius:22px;border:1px solid #cbd8de;background:linear-gradient(rgba(23,59,82,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(23,59,82,.045) 1px,transparent 1px),#fff;background-size:26px 26px;box-shadow:var(--shadow);overflow:hidden}.city{position:absolute;left:0;right:0;bottom:0;height:115px;background:#dfe7e9}.bld{position:absolute;bottom:115px;background:#647986;border-radius:5px 5px 0 0}.b1{left:38px;width:58px;height:120px}.b2{left:108px;width:86px;height:165px;background:#315f78}.b3{left:212px;width:62px;height:100px;background:#58717e}.b4{right:44px;width:92px;height:195px;background:#425966}.tower{position:absolute;left:320px;bottom:112px;width:5px;height:170px;background:#516872}.tower:before{content:"";position:absolute;left:-42px;top:20px;width:90px;height:5px;background:#516872;box-shadow:0 25px #516872}.node{position:absolute;width:19px;height:19px;border-radius:50%;box-shadow:0 0 0 8px rgba(43,154,138,.13)}.n1{left:67px;top:58px;background:var(--amber)}.n2{left:165px;top:98px;background:var(--teal)}.n3{left:260px;top:50px;background:var(--blue)}.n4{right:75px;top:90px;background:var(--orange)}.n5{left:340px;top:218px;background:var(--violet)}.link{position:absolute;height:3px;background:#6d8794;transform-origin:left}.l1{left:84px;top:67px;width:88px;transform:rotate(25deg)}.l2{left:180px;top:103px;width:88px;transform:rotate(-30deg)}.l3{left:278px;top:60px;width:143px;transform:rotate(18deg)}.l4{left:350px;top:226px;width:110px;transform:rotate(-55deg)}.label{position:absolute;left:34px;bottom:26px;background:#fff;border:1px solid #c7d7dd;border-radius:10px;padding:10px 14px;font-weight:850;color:#365b6c}
.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(31,45,53,.055)}.card h3{margin-top:0}.kicker{font-size:.74rem;text-transform:uppercase;letter-spacing:.11em;color:var(--orange);font-weight:900}
.pageHero{background:linear-gradient(120deg,#eaf3f6,#fff3df);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)}.breadcrumbs a{color:var(--muted)}.content{max-width:950px}.content p{font-size:1.045rem}.note{margin:26px 0;padding:18px 20px;border-left:5px solid var(--amber);background:#fff9e8;border-radius:0 12px 12px 0}.warning{border-left-color:var(--red);background:#fff0f0}.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 #cbd8de;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 #9eb2bd;border-radius:8px;font:inherit}.result{margin-top:17px;padding:17px;background:#ebf7f5;border:1px solid #c5e0d9;border-radius:10px}.result strong{font-size:1.35rem;color:#126c71}
footer{background:#173b52;color:#dce8ee;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:#f1f8fb;text-decoration:none}.fine{border-top:1px solid #3b6079;padding:17px 0 26px;color:#aac0cd;font-size:.89rem}.cookie{background:none;border:0;padding:0;color:inherit;text-decoration:underline;font:inherit;cursor:pointer}
@media(max-width:1060px){nav{display:none}.menu{display:block}nav.open{display:block;position:absolute;top:78px;left:0;right:0;background:#fbfcfd;border-bottom:1px solid var(--line);padding:17px}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}.network{max-width:720px}.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)}.network{height:340px}.section{padding:45px 0}}