/* ============================================================
   Союз Систем Безопасности — союзсб.рф
   Единый файл стилей. Без внешних зависимостей, кроме шрифта.
   ============================================================ */

:root{
  --ink:#05080f;
  --panel:#0a1120;
  --panel-2:#0d1728;
  --line:rgba(140,170,230,.14);
  --line-2:rgba(140,170,230,.28);
  --text:#e9f0ff;
  --muted:#8fa2c6;
  --dim:#6b7d9e;
  --blue:#4d8dff;
  --teal:#22e0c8;
  --amber:#ffb454;
  --grad:linear-gradient(120deg,#4d8dff 0%,#22e0c8 100%);
  --radius:18px;
  --container:1200px;
  --font:"Manrope",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.6;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(900px 620px at 8% -8%,rgba(77,141,255,.16),transparent 62%),
    radial-gradient(760px 520px at 100% 4%,rgba(34,224,200,.10),transparent 60%),
    radial-gradient(900px 700px at 50% 110%,rgba(77,141,255,.07),transparent 65%);
}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(34,224,200,.28);color:#fff}

:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- Типографика ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:11.5px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--teal);margin-bottom:18px;
}
.eyebrow::before{
  content:"";width:26px;height:1px;background:linear-gradient(90deg,transparent,var(--teal));
}
.eyebrow--plain::before{display:none}
h1{font-size:clamp(2.3rem,4.6vw,4.15rem);line-height:1.02;letter-spacing:-.035em;font-weight:800}
h2{font-size:clamp(1.75rem,3.3vw,2.9rem);line-height:1.1;letter-spacing:-.03em;font-weight:800}
h3{font-size:1.12rem;line-height:1.35;letter-spacing:-.01em;font-weight:700}
.lead{color:var(--muted);font-size:clamp(15px,1.4vw,17.5px);line-height:1.65;max-width:620px;margin-top:18px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

.section{padding:clamp(64px,7.6vw,108px) 0;position:relative}
.section--tight{padding:clamp(48px,5vw,72px) 0}
.section--alt{background:linear-gradient(180deg,rgba(255,255,255,.022),rgba(255,255,255,0) 70%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{max-width:760px;margin-bottom:clamp(32px,4vw,54px)}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center}
.section__head--center .eyebrow{justify-content:center}
.section__head--center .lead{margin-left:auto;margin-right:auto}
.section__head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;margin-bottom:clamp(32px,4vw,54px)}

/* ---------- Кнопки ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:54px;padding:0 26px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:-.01em;cursor:pointer;
  transition:transform .25s var(--ease),background .25s,border-color .25s,box-shadow .25s;
  white-space:nowrap;
}
.btn .icon{width:18px;height:18px;flex:none}
.btn--primary{
  background:var(--grad);color:#04131a;
  box-shadow:0 12px 34px -12px rgba(34,224,200,.55),0 6px 20px -8px rgba(77,141,255,.6);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 18px 44px -12px rgba(34,224,200,.6),0 8px 26px -8px rgba(77,141,255,.7)}
.btn--ghost{background:rgba(255,255,255,.035);border-color:var(--line-2);color:var(--text)}
.btn--ghost:hover{background:rgba(255,255,255,.07);border-color:rgba(140,170,230,.45);transform:translateY(-2px)}
.btn--sm{height:46px;padding:0 20px;font-size:14px;border-radius:10px}
.btn--lg{height:58px;padding:0 32px;font-size:16px}
.btn--block{width:100%}
.btn:active{transform:translateY(0)}

.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14px;color:var(--teal);transition:gap .25s var(--ease)}
.link-arrow .icon{width:16px;height:16px}
.link-arrow:hover{gap:13px}

/* ---------- Иконки ---------- */
.icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;display:block}
.icon--fill{fill:currentColor;stroke:none}

/* ---------- Шапка ---------- */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .3s,border-color .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.header.is-scrolled{
  background:rgba(5,8,15,.78);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.header__inner{display:flex;align-items:center;gap:28px;height:82px}
.logo{display:flex;align-items:center;gap:12px;flex:none}
.logo__mark{width:40px;height:44px;flex:none}
.logo__text{display:flex;flex-direction:column;line-height:1}
.logo__text b{font-size:19px;font-weight:800;letter-spacing:.1em}
.logo__text i{font-style:normal;font-size:8.5px;font-weight:600;letter-spacing:.17em;color:var(--muted);margin-top:5px}
.nav{display:flex;align-items:center;gap:6px;margin-left:6px}
.nav a{
  padding:10px 12px;border-radius:9px;font-size:14.5px;font-weight:600;color:var(--muted);white-space:nowrap;
  transition:color .2s,background .2s;
}
.nav a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav > .btn{display:none}
.nav .btn--primary{color:#04131a}
.header__actions{display:flex;align-items:center;gap:16px;margin-left:auto;flex:none}
.header__phone{display:flex;flex-direction:column;line-height:1.25;text-align:right}
.header__phone b{font-size:15.5px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.header__phone span{font-size:11px;color:var(--dim);letter-spacing:.04em}
.header__phone:hover b{color:var(--teal)}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line-2);border-radius:10px;
  background:rgba(255,255,255,.03);cursor:pointer;align-items:center;justify-content:center;
}
.burger .icon{width:22px;height:22px}
.burger__close{display:none}
.burger.is-open .burger__open{display:none}
.burger.is-open .burger__close{display:block}

/* ---------- Hero ---------- */
.hero{position:relative;padding:clamp(120px,14vw,168px) 0 clamp(52px,6vw,80px);overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(140,170,230,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,230,.055) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 68%);
  mask-image:radial-gradient(circle at 50% 22%,#000 0%,transparent 68%);
}
.hero__grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(32px,4vw,64px);align-items:center}
.hero h1{margin-top:0}
.hero h1 .line{display:block}
.hero__lead{color:var(--muted);font-size:clamp(15px,1.35vw,17.5px);line-height:1.65;max-width:520px;margin-top:22px}
.hero__lead b{color:var(--text);font-weight:600}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero__note{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:12.5px;color:var(--dim)}
.hero__note .icon{width:15px;height:15px;color:var(--teal)}
.hero__stats{display:grid;grid-template-columns:repeat(4,auto);gap:clamp(18px,3vw,40px);margin-top:46px;padding-top:26px;border-top:1px solid var(--line);justify-content:start}
.stat b{display:block;font-size:clamp(1.35rem,2.1vw,1.75rem);font-weight:800;letter-spacing:-.03em;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;font-size:11.5px;color:var(--dim);margin-top:8px;letter-spacing:.02em;line-height:1.3}

/* Hero: «камера» */
.hero__visual{position:relative}
.feed{
  position:relative;border-radius:22px;border:1px solid var(--line-2);overflow:hidden;
  background:#07101d;
  box-shadow:0 50px 120px -40px rgba(20,60,160,.55),0 20px 60px -30px rgba(0,0,0,.9),inset 0 0 0 1px rgba(255,255,255,.03);
}
.feed svg{display:block;width:100%;height:auto}
.feed__hud{position:absolute;inset:0;pointer-events:none;font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:rgba(233,240,255,.78);font-weight:700}
.feed__hud-tl{position:absolute;top:14px;left:14px;display:flex;align-items:center;gap:8px}
.feed__hud-tr{position:absolute;top:14px;right:14px;display:flex;align-items:center;gap:10px;color:rgba(233,240,255,.5)}
.feed__hud-bl{position:absolute;bottom:14px;left:14px;font-variant-numeric:tabular-nums;letter-spacing:.1em}
.feed__hud-br{position:absolute;bottom:14px;right:14px;display:flex;align-items:center;gap:7px;color:var(--teal)}
.rec-dot{width:7px;height:7px;border-radius:50%;background:#ff5a5a;box-shadow:0 0 10px #ff5a5a;animation:blink 1.8s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.2}}
.feed__corner{position:absolute;width:18px;height:18px;border-color:rgba(34,224,200,.65);border-style:solid;border-width:0}
.feed__corner.tl{top:34px;left:12px;border-top-width:1.5px;border-left-width:1.5px}
.feed__corner.tr{top:34px;right:12px;border-top-width:1.5px;border-right-width:1.5px}
.feed__corner.bl{bottom:34px;left:12px;border-bottom-width:1.5px;border-left-width:1.5px}
.feed__corner.br{bottom:34px;right:12px;border-bottom-width:1.5px;border-right-width:1.5px}
.feed__scan{
  position:absolute;left:0;right:0;top:0;height:110px;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(34,224,200,.13),transparent);
  animation:scan 8s linear infinite;
}
@keyframes scan{0%{transform:translateY(-130px)}100%{transform:translateY(520px)}}
.feed__chip{
  position:absolute;display:flex;align-items:center;gap:11px;
  padding:11px 15px;border-radius:13px;background:rgba(8,16,30,.86);
  border:1px solid var(--line-2);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 18px 40px -18px rgba(0,0,0,.9);z-index:2;
}
.feed__chip .icon{width:19px;height:19px;color:var(--teal);flex:none}
.feed__chip b{display:block;font-size:12.5px;font-weight:700;line-height:1.2}
.feed__chip span{display:block;font-size:10.5px;color:var(--dim);line-height:1.3;margin-top:2px}
.feed__chip--1{top:9%;right:-14px}
.feed__chip--2{bottom:12%;left:-20px}
@media (max-width:1240px){.feed__chip--1{right:8px}.feed__chip--2{left:8px}}

/* ---------- Бегущая строка брендов ---------- */
.brands{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.015);overflow:hidden}
.brands__inner{display:flex;align-items:center;gap:28px;padding:22px 0}
.brands__label{flex:none;font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);font-weight:700;max-width:130px;line-height:1.5}
.marquee{overflow:hidden;flex:1;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee__track{display:flex;align-items:center;gap:0;width:max-content;animation:marquee 38s linear infinite}
.marquee:hover .marquee__track{animation-play-state:paused}
.marquee__item{display:flex;align-items:center;gap:26px;padding:0 26px;font-size:15px;font-weight:800;letter-spacing:.02em;color:rgba(233,240,255,.42);white-space:nowrap;transition:color .25s}
.marquee__item::after{content:"";width:4px;height:4px;border-radius:50%;background:var(--line-2)}
.marquee__item:hover{color:var(--text)}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- Услуги ---------- */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.service{
  position:relative;padding:28px;border-radius:var(--radius);
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
  transition:transform .3s var(--ease),border-color .3s,background .3s;overflow:hidden;
}
.service::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .35s;
  background:radial-gradient(400px 200px at 20% 0%,rgba(34,224,200,.1),transparent 70%);
}
.service:hover{transform:translateY(-4px);border-color:rgba(34,224,200,.35);background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.015))}
.service:hover::before{opacity:1}
.service>*{position:relative}
.service__icon{
  width:48px;height:48px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(77,141,255,.18),rgba(34,224,200,.12));
  border:1px solid rgba(34,224,200,.24);color:var(--teal);margin-bottom:20px;
}
.service__icon .icon{width:24px;height:24px}
.service h3{margin-bottom:9px}
.service p{font-size:13.8px;color:var(--muted);line-height:1.6}
.service__more{display:inline-flex;align-items:center;gap:7px;margin-top:18px;font-size:12.5px;font-weight:700;color:var(--teal);opacity:.8;transition:.3s var(--ease)}
.service__more .icon{width:14px;height:14px}
.service:hover .service__more{opacity:1}

.lowvolt{
  margin-top:16px;padding:32px;border-radius:var(--radius);border:1px solid var(--line);
  background:
    radial-gradient(600px 240px at 0% 0%,rgba(77,141,255,.13),transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
  display:grid;grid-template-columns:1fr 1.25fr;gap:32px;align-items:center;
}
.lowvolt h3{font-size:1.3rem;margin-bottom:8px}
.lowvolt p{color:var(--muted);font-size:14px;max-width:380px}
.tags{display:flex;flex-wrap:wrap;gap:9px}
.tag{
  display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;
  border:1px solid var(--line-2);background:rgba(255,255,255,.03);font-size:13px;font-weight:600;color:var(--muted);
  transition:.25s;
}
.tag::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--teal);opacity:.7}
.tag:hover{color:var(--text);border-color:rgba(34,224,200,.45);background:rgba(34,224,200,.07)}

/* ---------- Кому подходит ---------- */
.segments{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.segment{
  position:relative;padding:clamp(24px,3vw,34px);border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
  transition:transform .3s var(--ease),border-color .3s;
}
.segment:hover{transform:translateY(-3px);border-color:var(--line-2)}
.segment::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(520px 260px at 100% 0%,var(--seg-glow),transparent 70%)}
.segment>*{position:relative}
.segment--b2b{--seg:#8fb8ff;--seg-glow:rgba(77,141,255,.16);--seg-line:rgba(77,141,255,.32);--seg-bg:rgba(77,141,255,.1)}
.segment--home{--seg:#5ff0dc;--seg-glow:rgba(34,224,200,.13);--seg-line:rgba(34,224,200,.32);--seg-bg:rgba(34,224,200,.08)}
.segment__top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}
.segment__icon{width:54px;height:54px;border-radius:15px;display:flex;align-items:center;justify-content:center;background:var(--seg-bg);border:1px solid var(--seg-line);color:var(--seg)}
.segment__icon .icon{width:26px;height:26px}
.segment__label{font-size:9.5px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--seg);padding:6px 11px;border-radius:99px;border:1px solid var(--seg-line);background:var(--seg-bg)}
.segment h3{font-size:1.55rem;letter-spacing:-.02em;margin-bottom:6px}
.segment__lead{color:var(--muted);font-size:13.5px}
.segment ul{display:grid;gap:10px;margin:22px 0 24px}
.segment li{display:flex;gap:10px;font-size:13.5px;line-height:1.5;color:#c7d4ec}
.segment li .icon{width:15px;height:15px;color:var(--seg);flex:none;margin-top:3px}
.segment .link-arrow{color:var(--seg)}
.segment .link-arrow:hover{color:#fff}

/* ---------- Калькулятор ---------- */
.calc{display:grid;grid-template-columns:1.08fr .92fr;gap:20px;align-items:start}
.calc__panel,.calc__result{
  border:1px solid var(--line);border-radius:22px;background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
}
.calc__panel{padding:clamp(22px,3vw,36px)}
.calc__group{margin-bottom:26px}
.calc__group:last-child{margin-bottom:0}
.calc__label{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px}
.calc__label span{font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.calc__label em{font-style:normal;font-size:11.5px;color:var(--dim)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  appearance:none;border:1px solid var(--line-2);background:rgba(255,255,255,.03);
  color:var(--muted);border-radius:10px;padding:10px 14px;font-size:13px;font-weight:600;
  cursor:pointer;transition:.22s;line-height:1.2;
}
.chip:hover{color:var(--text);border-color:rgba(140,170,230,.5)}
.chip.is-active{background:rgba(34,224,200,.12);border-color:rgba(34,224,200,.55);color:#dffff8;box-shadow:0 0 0 1px rgba(34,224,200,.18) inset}
.range-row{display:flex;align-items:center;gap:16px}
input[type="range"]{
  -webkit-appearance:none;appearance:none;width:100%;height:4px;border-radius:99px;
  background:linear-gradient(90deg,var(--teal) 0%,var(--teal) var(--p,30%),rgba(140,170,230,.18) var(--p,30%),rgba(140,170,230,.18) 100%);
  cursor:pointer;outline-offset:8px;
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;width:20px;height:20px;border-radius:50%;
  background:#eaf6ff;border:3px solid #12b8a3;box-shadow:0 0 0 5px rgba(34,224,200,.14),0 4px 12px rgba(0,0,0,.5);
  cursor:grab;
}
input[type="range"]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:#eaf6ff;border:3px solid #12b8a3;cursor:grab}
.range-val{flex:none;min-width:66px;text-align:center;padding:8px 10px;border-radius:9px;border:1px solid var(--line-2);background:rgba(255,255,255,.04);font-size:14px;font-weight:800;font-variant-numeric:tabular-nums}
.checks{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.check{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;cursor:pointer;font-size:13px;color:var(--muted);transition:.22s;line-height:1.25}
.check:hover{border-color:var(--line-2);color:var(--text)}
.check input{position:absolute;opacity:0;width:0;height:0}
.check__box{width:17px;height:17px;border-radius:5px;border:1.5px solid var(--line-2);flex:none;display:flex;align-items:center;justify-content:center;transition:.2s}
.check__box .icon{width:11px;height:11px;stroke-width:3;color:#04131a;opacity:0;transform:scale(.6);transition:.2s}
.check input:checked + .check__box{background:var(--grad);border-color:transparent}
.check input:checked + .check__box .icon{opacity:1;transform:none}
.check input:checked ~ span{color:var(--text)}
.check:has(input:checked){border-color:rgba(34,224,200,.4);background:rgba(34,224,200,.05)}
.check:focus-within{border-color:var(--teal)}

.calc__result{position:sticky;top:100px;padding:clamp(22px,3vw,34px);overflow:hidden}
.calc__result::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(480px 220px at 100% 0%,rgba(34,224,200,.12),transparent 70%)}
.calc__result>*{position:relative}
.calc__result-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
.calc__result-head span{font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);font-weight:700}
.calc__result-head em{font-style:normal;font-size:10.5px;color:var(--teal);border:1px solid rgba(34,224,200,.3);padding:4px 9px;border-radius:99px;background:rgba(34,224,200,.06)}
.price{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.price__num{font-size:clamp(2.2rem,4.4vw,3rem);font-weight:800;letter-spacing:-.045em;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.price__cur{font-size:1.1rem;font-weight:700;color:var(--muted)}
.price__from{font-size:12px;color:var(--dim);margin-top:10px}
.calc__rows{margin:22px 0;border-top:1px solid var(--line)}
.calc__row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
.calc__row span{color:var(--muted)}
.calc__row b{font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.calc__warn{font-size:11.5px;line-height:1.55;color:#ffd39b;margin-top:14px;padding:9px 11px;border-radius:8px;background:rgba(255,180,84,.08);border:1px solid rgba(255,180,84,.25)}
.calc__hint{font-size:11.5px;line-height:1.55;color:var(--dim);margin-top:14px}
.calc__result .btn{margin-top:20px}

/* ---------- Комплекты ---------- */
.packs{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;grid-auto-rows:1fr}
.pack{
  position:relative;display:flex;flex-direction:column;padding:26px 24px;border-radius:var(--radius);
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
  transition:transform .3s var(--ease),border-color .3s;
}
.pack:hover{transform:translateY(-4px);border-color:var(--line-2)}
.pack--hot{
  border-color:rgba(34,224,200,.45);
  background:
    radial-gradient(400px 220px at 50% 0%,rgba(34,224,200,.13),transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
}
.pack__badge{
  position:absolute;top:-11px;left:24px;font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:800;
  padding:5px 10px;border-radius:99px;background:var(--grad);color:#04131a;
}
.pack__name{font-size:1.05rem;font-weight:800;letter-spacing:-.01em}
.pack__desc{font-size:11.5px;color:var(--dim);margin-top:4px;min-height:17px}
.pack__price{margin:18px 0 4px;font-size:1.75rem;font-weight:800;letter-spacing:-.03em;line-height:1}
.pack__price small{font-size:.85rem;font-weight:700;color:var(--muted);letter-spacing:0}
.pack__price-note{font-size:11px;color:var(--dim)}
.pack ul{margin:20px 0 24px;display:grid;gap:9px}
.pack li{display:flex;gap:9px;font-size:12.8px;color:var(--muted);line-height:1.45}
.pack li .icon{width:14px;height:14px;color:var(--teal);flex:none;margin-top:3px}
.pack .btn{margin-top:auto}
.packs__note{margin-top:24px;text-align:center;font-size:13px;color:var(--dim)}
.packs__note a{color:var(--teal);text-decoration:underline;text-underline-offset:3px}
.packs__note a:hover{color:#fff}

/* ---------- Этапы ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:step}
.step{position:relative;padding-top:30px}
.step::before{
  content:"";position:absolute;top:15px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--line-2),rgba(140,170,230,.06));
}
.step:last-child::before{background:linear-gradient(90deg,var(--line-2),transparent)}
.step__num{
  position:absolute;top:0;left:0;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;
  background:#0a1424;border:1px solid rgba(34,224,200,.4);color:var(--teal);
  box-shadow:0 0 0 5px var(--ink);
}
.section--alt .step__num{box-shadow:0 0 0 5px #070c16}
.step h3{font-size:.98rem;margin-bottom:7px}
.step p{font-size:12.8px;color:var(--muted);line-height:1.55}
.step__time{display:inline-block;margin-top:10px;font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--teal);opacity:.85}

/* ---------- Объекты ---------- */
.cases{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.case{
  position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--panel);transition:transform .35s var(--ease),border-color .35s;
}
.case:hover{transform:translateY(-4px);border-color:var(--line-2)}
.case__media{position:relative;aspect-ratio:16/8.4;background:#0a1424;overflow:hidden}
.case__media svg{position:absolute;inset:0;width:100%;height:100%}
.case__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(5,8,15,.75))}
.case__tag{
  position:absolute;top:14px;left:14px;z-index:2;font-size:10px;letter-spacing:.14em;text-transform:uppercase;font-weight:800;
  padding:6px 11px;border-radius:99px;border:1px solid rgba(255,255,255,.22);background:rgba(5,8,15,.55);
  backdrop-filter:blur(8px);color:#fff;
}
.case__metric{
  position:absolute;top:14px;right:14px;z-index:2;font-size:12px;font-weight:800;letter-spacing:-.01em;
  padding:7px 12px;border-radius:9px;background:rgba(34,224,200,.14);border:1px solid rgba(34,224,200,.35);color:#c8fff5;
  backdrop-filter:blur(8px);
}
.case__body{padding:20px 22px 24px}
.case__body h3{font-size:1.02rem}
.case__body p{font-size:12.8px;color:var(--muted);margin-top:7px;line-height:1.55}

/* ---------- Обложки кейсов ---------- */
.case__media::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:linear-gradient(rgba(140,170,230,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,230,.12) 1px,transparent 1px);
  background-size:36px 36px;opacity:.5;
  -webkit-mask-image:radial-gradient(circle at 25% 25%,#000,transparent 78%);
  mask-image:radial-gradient(circle at 25% 25%,#000,transparent 78%);
}
.case__media--a{background:radial-gradient(130% 130% at 12% 8%,#14365f 0%,#0a1a2e 55%,#071120 100%)}
.case__media--b{background:radial-gradient(130% 130% at 88% 8%,#0f3b45 0%,#0a2130 55%,#071120 100%)}
.case__media--c{background:radial-gradient(130% 130% at 12% 92%,#2a2350 0%,#131a35 55%,#071120 100%)}
.case__media--d{background:radial-gradient(130% 130% at 88% 92%,#123a4a 0%,#0c2233 55%,#071120 100%)}
.case__media .case__icon{
  position:absolute;top:auto;left:auto;right:16px;bottom:-8px;width:132px;height:132px;z-index:1;
  color:#a9ccff;opacity:.16;stroke-width:1;
}
.case__media::after{background:linear-gradient(180deg,transparent 35%,rgba(5,8,15,.85))}

section[id],span[id]{scroll-margin-top:96px}

/* ---------- Почему мы ---------- */
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.why__card{padding:26px 24px;border-radius:var(--radius);border:1px solid var(--line);background:rgba(255,255,255,.022);transition:border-color .3s,background .3s}
.why__card:hover{border-color:var(--line-2);background:rgba(255,255,255,.035)}
.why__card .icon{width:26px;height:26px;color:var(--teal);margin-bottom:16px}
.why__card h3{font-size:.98rem;margin-bottom:8px}
.why__card p{font-size:12.8px;color:var(--muted);line-height:1.55}
.why__big{
  grid-column:span 2;display:flex;align-items:center;gap:24px;padding:26px 30px;border-radius:var(--radius);
  border:1px solid rgba(34,224,200,.3);background:
    radial-gradient(500px 200px at 0% 50%,rgba(34,224,200,.12),transparent 70%),
    linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));
}
.why__big b{font-size:clamp(2.2rem,3.6vw,3rem);font-weight:800;letter-spacing:-.04em;line-height:.9;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.why__big span{font-size:13px;color:var(--muted);line-height:1.5;max-width:230px}

/* ---------- Отзывы ---------- */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.review{padding:26px;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.012));display:flex;flex-direction:column}
.stars{display:flex;gap:3px;color:var(--amber);margin-bottom:16px}
.stars .icon{width:14px;height:14px;fill:currentColor;stroke:none}
.review p{font-size:13.6px;color:#c7d4ec;line-height:1.65}
.review__author{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.review__ava{width:38px;height:38px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;background:linear-gradient(140deg,rgba(77,141,255,.3),rgba(34,224,200,.24));border:1px solid var(--line-2);color:#dff6ff}
.review__author b{display:block;font-size:13px;font-weight:700}
.review__author span{display:block;font-size:11.5px;color:var(--dim);margin-top:1px}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 4px;font-size:16px;font-weight:700;letter-spacing:-.01em;transition:color .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--teal)}
.faq__plus{position:relative;width:22px;height:22px;flex:none;border-radius:50%;border:1px solid var(--line-2);transition:.3s}
.faq__plus::before,.faq__plus::after{content:"";position:absolute;top:50%;left:50%;background:var(--muted);transition:.3s}
.faq__plus::before{width:9px;height:1.5px;transform:translate(-50%,-50%)}
.faq__plus::after{width:1.5px;height:9px;transform:translate(-50%,-50%)}
.faq details[open] .faq__plus{border-color:rgba(34,224,200,.6);background:rgba(34,224,200,.1)}
.faq details[open] .faq__plus::before,.faq details[open] .faq__plus::after{background:var(--teal)}
.faq details[open] .faq__plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq details[open] summary{color:var(--teal)}
.faq__answer{padding:0 44px 24px 4px;color:var(--muted);font-size:14px;line-height:1.7;max-width:720px}

/* ---------- CTA / форма ---------- */
.cta{position:relative;border:1px solid var(--line-2);border-radius:26px;overflow:hidden;background:linear-gradient(140deg,#0a1424,#081020 60%,#0a1a24)}
.cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(600px 320px at 0% 0%,rgba(77,141,255,.22),transparent 65%),
    radial-gradient(500px 300px at 100% 100%,rgba(34,224,200,.16),transparent 65%);
}
.cta::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.4;
  background-image:linear-gradient(rgba(140,170,230,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(140,170,230,.07) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(circle at 70% 40%,#000,transparent 75%);
  mask-image:radial-gradient(circle at 70% 40%,#000,transparent 75%);
}
.cta__inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,4vw,64px);padding:clamp(30px,4vw,56px)}
.cta__left h2{max-width:420px}
.cta__left .lead{max-width:400px;font-size:14.5px}
.cta__contacts{margin-top:30px;display:grid;gap:14px}
.cta__contact{display:flex;align-items:center;gap:13px;font-size:14px;color:var(--muted)}
.cta__contact .icon{width:18px;height:18px;color:var(--teal);flex:none}
.cta__contact b{color:var(--text);font-weight:700}
.cta__contact a:hover{color:var(--teal)}

.form{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:11.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
.field input,.field select,.field textarea{
  width:100%;background:rgba(5,10,20,.55);border:1px solid var(--line-2);border-radius:11px;
  padding:13px 15px;font:inherit;font-size:14px;color:var(--text);transition:border-color .2s,background .2s;
  appearance:none;
}
.field textarea{resize:vertical;min-height:88px}
.field input::placeholder,.field textarea::placeholder{color:#5c6d8c}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:rgba(34,224,200,.65);background:rgba(5,10,20,.8)}
.field select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%238fa2c6' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center;padding-right:38px}
.field select option{background:#0a1120;color:var(--text)}
.consent{grid-column:1/-1;display:flex;align-items:flex-start;gap:10px;margin-top:4px;cursor:pointer}
.consent input{position:absolute;opacity:0;width:0;height:0}
.consent__box{width:17px;height:17px;border-radius:5px;border:1.5px solid var(--line-2);flex:none;margin-top:2px;display:flex;align-items:center;justify-content:center;transition:.2s}
.consent__box .icon{width:11px;height:11px;stroke-width:3;color:#04131a;opacity:0;transition:.2s}
.consent input:checked + .consent__box{background:var(--grad);border-color:transparent}
.consent input:checked + .consent__box .icon{opacity:1}
.consent span{font-size:11.5px;color:var(--dim);line-height:1.5}
.consent a{color:var(--muted);text-decoration:underline;text-underline-offset:2px}
.consent a:hover{color:var(--teal)}
.form__error{grid-column:1/-1;color:#ff8f8f;font-size:12px;display:none}
.form__error.is-visible{display:block}
.form .btn{grid-column:1/-1;margin-top:4px}
.form__success{
  grid-column:1/-1;display:none;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  padding:40px 20px;border:1px solid rgba(34,224,200,.35);border-radius:16px;background:rgba(34,224,200,.06);
}
.form__success.is-visible{display:flex}
.form__success .icon{width:38px;height:38px;color:var(--teal);margin-bottom:14px}
.form__success b{font-size:1.05rem}
.form__success span{font-size:13px;color:var(--muted);margin-top:6px;max-width:300px}

/* ---------- Подвал ---------- */
.footer{border-top:1px solid var(--line);background:rgba(3,6,12,.6);padding:60px 0 0;position:relative;z-index:1}
.footer__grid{display:grid;grid-template-columns:1.5fr .9fr .9fr 1.2fr;gap:40px}
.footer__brand p{font-size:13px;color:var(--muted);margin-top:18px;max-width:280px;line-height:1.6}
.footer__slogan{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-top:16px;font-weight:700}
.footer h4{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);font-weight:800;margin-bottom:16px}
.footer__links{display:grid;gap:9px}
.footer__links a{font-size:13.5px;color:var(--muted);transition:color .2s}
.footer__links a:hover{color:var(--teal)}
.footer__contacts{display:grid;gap:12px}
.footer__contact{display:flex;gap:11px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.5}
.footer__contact .icon{width:16px;height:16px;color:var(--teal);flex:none;margin-top:2px}
.footer__contact b{display:block;color:var(--text);font-weight:700}
.footer__contact a:hover{color:var(--teal)}
.footer__bottom{
  margin-top:46px;padding:22px 0 26px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:11.5px;color:var(--dim);
}
.footer__bottom a{color:var(--dim);text-decoration:underline;text-underline-offset:2px}
.footer__bottom a:hover{color:var(--muted)}
.footer__legal{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- Мобильная кнопка ---------- */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(5,8,15,.9);backdrop-filter:blur(16px);border-top:1px solid var(--line);
  gap:10px;
  transform:translateY(110%);opacity:0;visibility:hidden;
  transition:transform .32s var(--ease),opacity .25s,visibility .25s;
}
.mobile-cta.is-visible{transform:none;opacity:1;visibility:visible}
.mobile-cta .btn{flex:1;height:48px;font-size:14px;padding:0 14px}
.mobile-cta .btn--ghost{flex:0 0 auto;width:auto;padding:0 16px}
.mobile-cta .btn[aria-label="Позвонить"]{width:48px;padding:0;flex:none}

/* ---------- Анимация появления ---------- */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}
.reveal[data-delay="4"]{transition-delay:.32s}

/* ---------- Внутренние страницы ---------- */
.doc{padding:clamp(110px,13vw,150px) 0 80px}
.doc__inner{max-width:800px}
.doc h1{font-size:clamp(1.9rem,3.4vw,2.7rem);margin-bottom:10px}
.doc__date{font-size:12px;color:var(--dim);margin-bottom:34px}
.doc h2{font-size:1.15rem;margin:34px 0 10px;letter-spacing:-.01em}
.doc p,.doc li{color:var(--muted);font-size:14px;line-height:1.75}
.doc ul{list-style:disc;padding-left:20px;display:grid;gap:6px;margin:10px 0}
.doc a{color:var(--teal);text-decoration:underline;text-underline-offset:2px}
.doc__back{margin-top:44px;display:inline-flex}

/* ---------- Адаптив ---------- */
@media (max-width:1300px){
  .header__phone{display:none}
}
@media (max-width:1080px){
  .nav{gap:0}
  .nav a{padding:10px 9px;font-size:13.5px}
  .header__phone{display:none}
  .hero__grid{grid-template-columns:1fr;gap:44px}
  .hero__visual{max-width:600px}
  .services{grid-template-columns:repeat(2,1fr)}
  .lowvolt{grid-template-columns:1fr;gap:20px}
  .segments{grid-template-columns:1fr}
  .packs{grid-template-columns:repeat(2,1fr)}
  .why{grid-template-columns:repeat(2,1fr)}
  .why__big{grid-column:span 2}
  .steps{grid-template-columns:repeat(3,1fr);gap:26px}
  .step:nth-child(4)::before,.step:nth-child(5)::before{display:none}
  .footer__grid{grid-template-columns:1.2fr .8fr .8fr;gap:30px}
  .footer__contacts-col{grid-column:span 3}
  .calc{grid-template-columns:1fr}
  .calc__result{position:static}
  .cta__inner{grid-template-columns:1fr}
}
@media (max-width:860px){
  .header__inner{height:72px;gap:14px}
  .nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;z-index:99;
    flex-direction:column;align-items:stretch;gap:2px;padding:14px 14px 28px;
    background:rgba(6,10,19,.985);border-bottom:1px solid var(--line);
    backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);
    overflow-y:auto;overscroll-behavior:contain;
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:.28s var(--ease);
  }
  .nav.is-open{transform:none;opacity:1;visibility:visible}
  .nav a{padding:14px 16px;font-size:16px;border-radius:10px}
  .header__actions{gap:10px}
  .burger{display:flex}
  .header__actions .btn{display:none}
  .nav .btn{display:flex;margin-top:10px;color:#04131a}
  body.menu-open{overflow:hidden}
  .hero{padding-top:112px}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:20px 24px}
  .brands__label{display:none}
  .cases{grid-template-columns:1fr}
  .reviews{grid-template-columns:1fr}
  .cta__inner{padding:26px 22px}
  .form{grid-template-columns:1fr}
  .mobile-cta{display:flex}
  .footer{padding-bottom:70px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .services{grid-template-columns:1fr}
  .packs{grid-template-columns:1fr;grid-auto-rows:auto}
  .why{grid-template-columns:1fr}
  .why__big{grid-column:span 1;flex-direction:column;align-items:flex-start;gap:12px}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:0 0 26px 52px}
  .step::before{top:0;bottom:0;left:15px;right:auto;width:1px;height:auto;background:linear-gradient(180deg,var(--line-2),rgba(140,170,230,.06))}
  .step:last-child{padding-bottom:0}
  .step:last-child::before{display:none}
  .step__num{top:0}
  .checks{grid-template-columns:1fr}
  .feed__chip{display:none}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer__brand{grid-column:span 2}
  .footer__contacts-col{grid-column:span 2}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .section__head-row{flex-direction:column;align-items:flex-start;gap:18px}
  .hero__cta .btn{width:100%}
  .hero__cta{flex-direction:column}
  .hero__cta .btn--ghost{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}