/* Лендинг Digital Security Center — концепт K (executive docs).
   Раскладка перенесена без изменений; цвета вынесены в токены, чтобы
   тёмный и светлый режимы отличались только фоном и цветом шрифта. */
:root{
  color-scheme:dark;
  --bg:#071522;--panel:#0c1d2b;--panel2:#102536;--cycle:#091925;--node-now:#0f2a3a;
  --ink:#f3f6f7;--muted:#a3b3be;--line:#294052;--dim:#4d6678;--arrow:#6f8ba0;
  --accent:#4ab4b0;--accent-soft:#7fc4c0;--button-line:#70899b;
  --inv-bg:#e8eceb;--inv-bg-now:#ffffff;--inv-ink:#142330;--inv-muted:#34444e;--inv-soft:#46545b;--inv-line:#b8c1c2;--inv-accent:#1d6360;
  --max:1280px;
}
html[data-theme="light"]{
  color-scheme:light;
  --bg:#f7f8f8;--panel:#eef1f2;--panel2:#e5eaec;--cycle:#eef1f2;--node-now:#dde6e8;
  --ink:#0e1c26;--muted:#4e5f6a;--line:#ccd6d9;--dim:#9aacb6;--arrow:#7d94a4;
  --accent:#15716d;--accent-soft:#1a5f5c;--button-line:#8ba0ac;
  --inv-bg:#0d1c26;--inv-bg-now:#132735;--inv-ink:#f3f6f7;--inv-muted:#c3d0d7;--inv-soft:#a9bac4;--inv-line:#2c4354;--inv-accent:#7fc4c0;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 Arial,sans-serif;overflow-x:hidden}
a{color:inherit}
.wrap{width:min(var(--max),calc(100% - 80px));margin:auto}
.top{border-bottom:1px solid var(--line)}
.nav{height:78px;display:flex;align-items:center;gap:26px}
.brand{min-height:44px;display:inline-flex;align-items:center;font-size:15px;font-weight:700;letter-spacing:.01em;text-decoration:none}
.nav nav{display:flex;gap:18px;margin-left:auto}
.nav nav a{min-height:44px;display:inline-flex;align-items:center;padding:0 6px;color:var(--muted);font-size:14px;text-decoration:none}
.nav nav a:hover{color:var(--ink)}
.button{min-height:48px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border:1px solid var(--button-line);text-decoration:none;font-size:14px;font-weight:700;background:transparent;color:var(--ink);font-family:inherit;cursor:pointer;transition:background .16s ease,color .16s ease,border-color .16s ease}
.button:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.button:active{transform:translateY(1px)}
.lang button{transition:color .16s ease,background .16s ease}
.lang button:hover{color:var(--ink);background:rgba(127,196,192,.18)}
.lang button.on:hover{background:var(--ink);color:var(--bg)}
.nav .button{min-height:44px}
.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.tools{display:flex;align-items:center;gap:10px}
.lang{display:flex;border:1px solid var(--line)}
.lang button{min-height:44px;min-width:38px;padding:0 8px;background:transparent;border:0;color:var(--muted);font:700 13px/1 Arial,sans-serif;cursor:pointer}
.lang button.on{background:var(--ink);color:var(--bg)}
.theme{min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center;padding:0;border:1px solid var(--line);background:transparent;color:var(--muted);cursor:pointer}
.theme:hover{color:var(--ink);border-color:var(--dim)}
.theme svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.theme .icon-moon{display:none}
html[data-theme="light"] .theme .icon-sun{display:none}
html[data-theme="light"] .theme .icon-moon{display:block}

.hero{padding:78px 0 74px}
.hero-copy{display:grid;grid-template-columns:1.2fr .62fr;gap:80px;align-items:end;margin-bottom:56px}
.kicker{color:var(--accent);font:700 13px/1.3 Arial,sans-serif;letter-spacing:.08em;text-transform:uppercase}
.hero h1{font-size:clamp(34px,4.1vw,54px);line-height:1.06;letter-spacing:-.035em;margin:20px 0 0;max-width:800px}
.intro{border-left:1px solid var(--line);padding-left:30px;color:var(--muted);font-size:18px}
.intro p{margin:0 0 16px}
.intro .slogan{color:var(--ink);font-weight:700;margin-bottom:23px}
.actions{display:flex;gap:12px;flex-wrap:wrap}

.cycle{border:1px solid var(--line);background:var(--cycle)}
.types{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:18px 24px;border-bottom:1px solid var(--line)}
.types-label{font-size:14px;color:var(--muted);margin-right:6px}
.chip-doc{border:1px solid var(--dim);padding:6px 12px;font-size:14px;line-height:1.3;color:var(--ink)}
.flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr)) 1.2fr;padding-bottom:34px}
.node{position:relative;min-width:0;padding:22px 18px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;flex-direction:column;overflow-wrap:break-word;transition:background .35s}
.node:not(.result):after{content:"";position:absolute;z-index:2;right:-8px;top:30px;border:7px solid transparent;border-left:9px solid var(--arrow);border-right:0}
.no{flex:none;width:30px;height:30px;border:1px solid var(--dim);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;color:var(--muted);transition:background .35s,color .35s,border-color .35s}
.txt{min-width:0}
.node h3{font-size:17px;line-height:1.3;font-weight:700;margin:14px 0 8px}
.node p{font-size:14px;line-height:1.45;color:var(--muted);margin:0}
.status{margin-top:auto;padding-top:18px;font-size:13px;line-height:1.3;font-weight:700;color:var(--accent-soft);display:flex;align-items:center;gap:8px}
.status:before{content:"";flex:none;width:8px;height:8px;background:var(--accent)}
.node.on .no{border-color:var(--accent);color:var(--accent)}
.node.now{background:var(--node-now);box-shadow:inset 0 3px 0 var(--accent)}
.node.now .no{background:var(--accent);color:var(--bg)}
.result{grid-column:6;grid-row:1;border-right:0;background:var(--inv-bg);color:var(--inv-ink)}
.result h3{color:var(--inv-ink)}
.result p{color:var(--inv-muted)}
.result .no{display:none}
.result .status{color:var(--inv-accent);padding-top:18px}
.result .status:before{background:var(--inv-accent)}
.result.now{background:var(--inv-bg-now);box-shadow:inset 0 3px 0 var(--inv-accent)}
.result .tag{font-size:13px;font-weight:700;color:var(--inv-soft)}
.loop{grid-column:2/6;grid-row:2;margin:0 12.5%;position:relative;height:66px;border:2px solid var(--dim);border-top:0}
.loop:before{content:"";position:absolute;left:-8px;top:0;border:7px solid transparent;border-bottom:10px solid var(--dim);border-top:0}
.loop.on{border-color:var(--accent)}
.loop.on:before{border-bottom-color:var(--accent)}
.loop-line{position:absolute;left:0;right:0;bottom:0;transform:translateY(50%);display:flex;justify-content:space-around;align-items:center;padding:0 8px}
.arr{font-size:15px;color:var(--muted);background:var(--cycle)}
.chip{background:var(--cycle);border:1px solid var(--dim);padding:6px 10px;font-size:14px;line-height:1.3;white-space:nowrap;color:var(--muted)}
.chip.on{color:var(--ink);border-color:var(--accent)}
.loop-note{position:absolute;left:0;right:0;top:12px;text-align:center;font-size:13px;color:var(--muted);padding:0 10px}

.ledger{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metrics{display:grid;grid-template-columns:1.25fr repeat(5,1fr)}
.metric{min-height:108px;padding:23px;border-left:1px solid var(--line)}
.metric:first-child{border-left:0;padding-left:0}
.metric b{display:block;font-size:28px;letter-spacing:-.03em}
.metric span{font-size:14px;color:var(--muted)}
.metric-label{display:flex;align-items:center;color:var(--ink);font-size:15px}

.method{padding:112px 0}
.section-head{display:grid;grid-template-columns:.9fr 1.1fr;gap:100px;margin-bottom:58px}
.section-head h2,.delivery h2,.contact h2{font-size:clamp(34px,3.8vw,54px);line-height:1.06;letter-spacing:-.04em;margin:0}
.section-head p{margin:5px 0 0;color:var(--muted);font-size:18px;max-width:610px}
.register{border-top:1px solid var(--dim)}
.row{display:grid;grid-template-columns:44px .8fr 1.5fr .9fr;gap:28px;align-items:start;padding:24px 0;border-bottom:1px solid var(--line)}
.row em{font-style:normal;color:var(--accent);font-size:18px;font-weight:700;line-height:1.4}
.row b{font-size:18px;line-height:1.35}
.row p{margin:0;color:var(--muted)}
.row small{display:block;color:var(--accent-soft);font-size:14px;line-height:1.45}
.row.back em{color:var(--muted)}

.delivery{background:var(--inv-bg);color:var(--inv-ink);padding:105px 0}
.delivery-grid{display:grid;grid-template-columns:.74fr 1.26fr;gap:100px}
.delivery .note{color:var(--inv-soft);margin:25px 0 0;max-width:430px}
.files{border-top:2px solid var(--inv-ink)}
.file{display:grid;grid-template-columns:1fr auto;gap:25px;padding:18px 0;border-bottom:1px solid var(--inv-line)}
.file span{font-weight:700}
.file small{color:var(--inv-soft);font-size:14px}
.files-head{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--inv-soft);margin:0 0 12px}
.files+.files-head{margin-top:40px}

.services{padding:75px 0}
.service-head{font-size:13px;color:var(--accent);letter-spacing:.08em;text-transform:uppercase;margin-bottom:28px}
.service-list{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--dim)}
.service{padding:24px 32px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.service:nth-child(3n+1){padding-left:0}
.service:nth-child(3n),.service:last-child{border-right:0}
.service b{display:block;margin-bottom:8px;font-size:17px}
.service span{color:var(--muted);font-size:15px}

.boundary{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0}
.boundary-grid{display:grid;grid-template-columns:220px 1fr;gap:70px}
.boundary b{font-size:16px}
.boundary p{margin:0;color:var(--muted)}

.contact{padding:100px 0}
.contact-grid{display:flex;align-items:end;justify-content:space-between;gap:70px}
.contact p{color:var(--muted)}
.contacts{display:flex;gap:12px;flex-wrap:wrap}

.footer{border-top:1px solid var(--line);padding:30px 0;color:var(--muted);font-size:14px}
.foot{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:30px}
.foot b{color:var(--ink)}

@media(max-width:1100px){
  .hero-copy{grid-template-columns:1fr;gap:30px;align-items:start}
  .intro{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:24px;max-width:720px}
  .hero h1{max-width:760px}
}
@media(max-width:1000px){
  .flow{grid-template-columns:1fr;padding-bottom:0}
  .node{display:grid;grid-template-columns:30px 1fr;column-gap:16px;padding:20px 20px 22px;border-right:0}
  .node:not(.result):after{right:auto;left:29px;top:auto;bottom:-8px;border:7px solid transparent;border-top:9px solid var(--arrow);border-bottom:0}
  .node h3{margin:3px 0 6px}
  .status{grid-column:2;padding-top:12px;margin-top:0}
  .result{grid-column:auto;grid-row:auto;order:6;grid-template-columns:1fr;border-bottom:0}
  .result .status{grid-column:1}
  .loop{grid-column:auto;grid-row:auto;order:7;height:auto;margin:0;padding:16px 20px 18px 60px;border:0;border-top:1px solid var(--line)}
  .loop:before{left:22px;top:12px;border-width:0 7px 10px}
  .loop:after{content:"";position:absolute;left:28px;top:22px;bottom:0;width:2px;background:var(--dim)}
  .loop.on:after{background:var(--accent)}
  .loop-note{position:static;text-align:left;padding:0;margin-bottom:12px;font-size:14px}
  .loop-line{position:static;transform:none;flex-wrap:wrap;justify-content:flex-start;gap:8px;padding:0}
}
@media(max-width:900px){
  .service-list{grid-template-columns:1fr}
  .service{border-right:0;padding:20px 0}
  .wrap{width:calc(100% - 40px)}
  .nav nav{display:none}
  .nav{flex-wrap:wrap;gap:10px}
  .tools{margin-left:auto}
  .hero-copy{grid-template-columns:1fr;gap:34px}
  .intro{max-width:650px}
  .metrics{grid-template-columns:1fr 1fr 1fr}
  .metric:first-child{grid-column:1/-1;min-height:70px}
  .metric:nth-child(4){border-left:0}
  .section-head,.delivery-grid{grid-template-columns:1fr;gap:35px}
  .row{grid-template-columns:40px .7fr 1.3fr}
  .row small{grid-column:3}
  .contact-grid{align-items:start;flex-direction:column}
  .contacts{width:100%}
  .types{padding:16px 20px}
}
@media(max-width:520px){
  .wrap{width:calc(100% - 32px)}
  .nav{height:auto;min-height:64px;padding:10px 0;gap:8px 10px}
  .brand{font-size:14px;flex:1 1 auto}
  .tools{width:100%;justify-content:space-between;gap:8px}
  .nav .button{padding:0 10px;min-height:40px}
  .lang button{min-width:34px;padding:0 6px;min-height:40px}
  .theme{min-height:40px;min-width:44px}
  .hero{padding:48px 0 50px}
  .hero h1{font-size:32px}
  .intro{padding-left:18px;font-size:16px}
  .actions .button{width:100%}
  .node{padding:18px 16px 20px}
  .metrics{grid-template-columns:1fr 1fr}
  .metric:first-child{grid-column:1/-1}
  .metric:nth-child(even){border-left:0}
  .method,.delivery,.contact{padding:70px 0}
  .row{grid-template-columns:30px 1fr;gap:10px 12px}
  .row p,.row small{grid-column:2}
  .service-list{grid-template-columns:1fr}
  .service,.service+.service{border-right:0;border-bottom:1px solid var(--line);padding:20px 0}
  .boundary-grid{grid-template-columns:1fr;gap:12px}
  .contacts .button{width:100%}
  .foot{grid-template-columns:1fr}
  .section-head{margin-bottom:35px}
  .types-label{width:100%}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .node,.no,.status,.loop,.loop:before,.loop:after,.chip{transition:none}
}