/* ============================================================
   ЭНЕРДЖИ СТРИМ — design system
   Светлый инженерный минимализм. Референс: fst42.ru
   ============================================================ */

:root{
  /* Палитра */
  --white:      #ffffff;
  --bg:         #f7f8f9;   /* очень светло-серый фон */
  --bg-beige:   #f4f1ea;   /* тёплый серо-бежевый (горный оттенок) */
  --bg-beige-2: #efe9df;
  --graphite:   #232a30;   /* заголовки, тёмные плашки */
  --graphite-2: #2b333b;
  --ink:        #333b42;   /* основной текст */
  --muted:      #6a747d;   /* второстепенный текст */
  --steel:      #4f6b7d;   /* стальной серо-голубой — акцент */
  --steel-2:    #5c7d92;
  --steel-soft: #eaf0f3;   /* подложка карточек */
  --line:       #e2e6e9;   /* линии-разделители */
  --line-2:     #d6dbdf;

  --radius:     14px;
  --radius-sm:  10px;
  --maxw:       1200px;
  --gutter:     clamp(20px, 5vw, 64px);

  --shadow-sm:  0 1px 2px rgba(35,42,48,.04), 0 2px 8px rgba(35,42,48,.05);
  --shadow-md:  0 8px 30px rgba(35,42,48,.08), 0 2px 8px rgba(35,42,48,.05);
  --shadow-lg:  0 20px 60px rgba(35,42,48,.12);

  --ease:       cubic-bezier(.22,.61,.36,1);
  --f-head:     'Manrope', system-ui, sans-serif;
  --f-body:     'Inter', system-ui, sans-serif;
  --f-mono:     'JetBrains Mono', ui-monospace, monospace;
}

/* ---------------- Reset / base ---------------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth; -webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--f-body);
  color:var(--ink);
  background:var(--white);
  font-size:17px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block; max-width:100%}
a{color:inherit; text-decoration:none}
h1,h2,h3{font-family:var(--f-head); font-weight:700; color:var(--graphite); letter-spacing:-.01em; line-height:1.12; margin:0; overflow-wrap:break-word}
p{margin:0}
ul{margin:0; padding:0; list-style:none}
button{font-family:inherit}

.container{width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--gutter)}

/* фоновое зерно (grain) — едва заметное, на светлых плашках */
.section{position:relative}
.about::after, .industry::after, .hero__grid-bg::after{
  content:""; position:absolute; inset:0; pointer-events:none; z-index:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
  opacity:.03; mix-blend-mode:multiply;
}
.about .container, .industry .container{position:relative; z-index:1}

/* ---------------- Buttons ---------------- */
.btn{
  --pad-y:15px; --pad-x:26px;
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  padding:var(--pad-y) var(--pad-x);
  font-family:var(--f-head); font-weight:600; font-size:15.5px; letter-spacing:.01em;
  border-radius:var(--radius-sm); border:1px solid transparent;
  cursor:pointer; transition:transform .18s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease), border-color .2s;
  white-space:nowrap;
}
.btn svg{transition:transform .2s var(--ease)}
.btn--sm{--pad-y:11px; --pad-x:18px; font-size:14.5px; border-radius:9px}
.btn--primary{background:var(--graphite-2); color:#fff; box-shadow:var(--shadow-sm)}
.btn--primary:hover{background:var(--steel); transform:translateY(-2px); box-shadow:var(--shadow-md)}
.btn--primary:hover svg{transform:translateX(3px)}
.btn--ghost{background:transparent; color:var(--graphite); border-color:var(--line-2)}
.btn--ghost:hover{border-color:var(--steel); color:var(--steel); background:var(--steel-soft)}
.btn--ghost-light{color:#e7edf0; border-color:rgba(255,255,255,.28)}
.btn--ghost-light:hover{background:rgba(255,255,255,.08); border-color:rgba(255,255,255,.5); color:#fff}

.icon-btn{
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px; border-radius:9px; color:var(--steel);
  border:1px solid var(--line); background:var(--white); transition:.2s var(--ease);
}
.icon-btn:hover{background:var(--steel); color:#fff; border-color:var(--steel); transform:translateY(-2px)}

.link{color:var(--steel); text-decoration:underline; text-underline-offset:3px; text-decoration-color:var(--line-2)}
.link:hover{text-decoration-color:var(--steel)}
.accent-word{color:var(--steel); position:relative; white-space:nowrap}
.muted{color:var(--muted)}

/* ---------------- Header ---------------- */
.header{
  position:sticky; top:0; z-index:100;
  background:rgba(255,255,255,.82); backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header__inner{display:flex; align-items:center; gap:24px; height:74px}
.logo{display:inline-flex; align-items:center; gap:12px; flex-shrink:0}
.logo__mark{border-radius:8px; box-shadow:var(--shadow-sm)}
.logo__text{display:flex; flex-direction:column; line-height:1.1}
.logo__text b{font-family:var(--f-head); font-weight:800; font-size:17px; color:var(--graphite); letter-spacing:-.01em}
.logo__text i{font-style:normal; font-size:11.5px; color:var(--muted); font-family:var(--f-mono); letter-spacing:.02em}

.nav{display:flex; align-items:center; gap:2px; margin-left:8px}
.nav__link{
  padding:9px 12px; font-size:14.5px; font-weight:500; color:var(--ink);
  border-radius:8px; transition:.18s var(--ease); position:relative;
  white-space:nowrap; line-height:1.2;
}
.nav__link:hover{color:var(--steel); background:var(--steel-soft)}

.header__side{display:flex; align-items:center; gap:14px; margin-left:auto; flex-shrink:0}
.header__contacts{display:flex; align-items:center; gap:14px}
.header__phone{font-family:var(--f-head); font-weight:700; font-size:15.5px; color:var(--graphite); white-space:nowrap}
.header__phone:hover{color:var(--steel)}
.header__msgs{display:flex; gap:8px}

.burger{
  display:none; width:44px; height:44px; margin-left:auto;
  background:none; border:1px solid var(--line); border-radius:10px; cursor:pointer;
  flex-direction:column; align-items:center; justify-content:center; gap:5px;
}
.burger span{width:20px; height:2px; background:var(--graphite); border-radius:2px; transition:.25s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------------- Hero ---------------- */
.hero{position:relative; padding:clamp(48px,7vw,92px) 0 clamp(56px,7vw,88px); overflow:hidden}
.hero__grid-bg{
  position:absolute; inset:0; z-index:0; pointer-events:none;
  background:
    linear-gradient(#fff, #fff),
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size:cover, 56px 56px, 56px 56px;
  background-position:0 0;
  -webkit-mask-image:radial-gradient(120% 90% at 78% 18%, #000 0%, transparent 72%);
          mask-image:radial-gradient(120% 90% at 78% 18%, #000 0%, transparent 72%);
  opacity:.6;
}
.hero__inner{position:relative; z-index:1; display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(28px,5vw,72px); align-items:center}
.hero__content{min-width:0}
.hero__visual{min-width:0}

.tagline{
  display:inline-flex; align-items:center; gap:9px; max-width:100%;
  font-family:var(--f-mono); font-size:13px; letter-spacing:.02em; color:var(--steel);
  background:var(--steel-soft); border:1px solid #dfe8ec; padding:7px 14px; border-radius:100px;
  margin-bottom:24px;
}
.tagline__dot{flex-shrink:0}
.tagline__dot{width:8px; height:8px; border-radius:50%; background:var(--steel); box-shadow:0 0 0 4px rgba(79,107,125,.16); animation:pulse 2.4s var(--ease) infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(79,107,125,.16)}50%{box-shadow:0 0 0 7px rgba(79,107,125,.05)}}

.hero__title{font-size:clamp(29px,4.4vw,54px); letter-spacing:-.02em; margin-bottom:22px; overflow-wrap:break-word; hyphens:auto}
.hero__subtitle{font-size:clamp(16px,1.6vw,19px); color:var(--muted); max-width:36em; margin-bottom:32px}
.hero__actions{display:flex; flex-wrap:wrap; gap:14px; margin-bottom:44px}

.hero__stats{display:grid; grid-template-columns:repeat(3,1fr); gap:0; border-top:1px solid var(--line); margin:0}
.hero__stat{padding:20px 20px 4px 0; border-right:1px solid var(--line)}
.hero__stat:last-child{border-right:none; padding-left:22px}
.hero__stat:nth-child(2){padding-left:22px}
.hero__stat dt{font-family:var(--f-head); font-weight:800; font-size:clamp(19px,2vw,24px); color:var(--graphite); letter-spacing:-.01em}
.hero__stat dd{margin:4px 0 0; font-size:13.5px; color:var(--muted)}

/* Инженерная схема (schematic) */
.schematic{
  position:relative; padding:26px; background:var(--white);
  border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow-md);
}
.schematic::before{
  content:""; position:absolute; inset:12px; border:1px dashed var(--line-2); border-radius:8px; pointer-events:none;
}
.schematic__svg{width:100%; height:auto; position:relative; z-index:1}
.schematic__label{
  position:absolute; top:16px; left:18px; z-index:2;
  font-family:var(--f-mono); font-size:10.5px; letter-spacing:.08em; color:var(--muted);
  background:var(--white); padding:2px 8px;
}
.schematic__corner{position:absolute; width:14px; height:14px; border:2px solid var(--steel); z-index:2}
.schematic__corner--tl{top:8px; left:8px; border-right:none; border-bottom:none}
.schematic__corner--tr{top:8px; right:8px; border-left:none; border-bottom:none}
.schematic__corner--bl{bottom:8px; left:8px; border-right:none; border-top:none}
.schematic__corner--br{bottom:8px; right:8px; border-left:none; border-top:none}
.schematic--card{padding:22px}
.schematic--beige{background:var(--bg-beige)}
.schematic--beige .schematic__label{background:var(--bg-beige)}

/* анимации внутри схем */
.anim-air{animation:airpuff 2.6s var(--ease) infinite}
@keyframes airpuff{0%,100%{opacity:.25; stroke-dashoffset:0}50%{opacity:1; stroke-dashoffset:-14}}
.anim-brush{transform-origin:154px 106px; animation:brush 3s var(--ease) infinite}
@keyframes brush{0%,100%{transform:translateX(0)}25%{transform:translateX(60px)}55%{transform:translateX(0)}}
.anim-dust{animation:dust 4s linear infinite}
@keyframes dust{0%{opacity:.7; transform:translateY(0)}100%{opacity:0; transform:translateY(-16px)}}
.cycle-rotor{transform-origin:180px 150px; animation:spin 6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.anim-flow{stroke-dasharray:6 6; animation:flow 1s linear infinite}
@keyframes flow{to{stroke-dashoffset:-12}}
.anim-blink{animation:blink 2s var(--ease) infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}
.flow-particles circle{animation:drift 3s linear infinite}
.flow-particles circle:nth-child(2){animation-delay:.6s}
.flow-particles circle:nth-child(3){animation-delay:1.2s}
.flow-particles circle:nth-child(4){animation-delay:1.8s}
@keyframes drift{0%{opacity:.8; transform:translateX(0)}100%{opacity:0; transform:translateX(50px)}}

.hero__scroll{
  position:absolute; left:50%; bottom:18px; transform:translateX(-50%); z-index:2;
  width:26px; height:42px; border:2px solid var(--line-2); border-radius:14px;
  display:flex; justify-content:center; padding-top:7px;
}
.hero__scroll span{width:4px; height:8px; border-radius:3px; background:var(--steel); animation:scroll 1.8s var(--ease) infinite}
@keyframes scroll{0%{opacity:0; transform:translateY(-4px)}40%{opacity:1}80%,100%{opacity:0; transform:translateY(10px)}}

/* ---------------- Marquee ---------------- */
.marquee{background:var(--graphite); overflow:hidden; padding:16px 0; border-block:1px solid #333c44}
.marquee__track{display:flex; align-items:center; gap:30px; white-space:nowrap; width:max-content; animation:marquee 34s linear infinite}
.marquee__track span{font-family:var(--f-mono); font-size:13.5px; letter-spacing:.14em; color:#c3cdd4}
.marquee__sep{color:var(--steel-2) !important}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------------- Section base ---------------- */
.section{padding:clamp(64px,9vw,120px) 0}
.section__head{margin-bottom:clamp(36px,5vw,60px); max-width:60ch}
.section__num{font-family:var(--f-mono); font-size:13px; color:var(--steel); letter-spacing:.1em; display:block; margin-bottom:14px}
.section__num::before{content:"/ "}
.section__title{font-size:clamp(26px,3.4vw,42px); letter-spacing:-.02em}
.section__sub{margin-top:16px; font-size:clamp(15px,1.5vw,18px); color:var(--muted)}
.section__head--light .section__title{color:#f4f7f9}
.section__head--light .section__sub{color:#a9b6bf}

/* ---------------- About ---------------- */
.about{background:var(--bg)}
.about__grid{display:grid; grid-template-columns:1fr 1fr; gap:clamp(30px,5vw,72px); align-items:start}
.about__lead{font-size:clamp(16px,1.7vw,19.5px); color:var(--ink); line-height:1.7}
.about__lead b{color:var(--graphite); font-weight:700}

.advantages{display:flex; flex-direction:column; gap:2px}
.adv{display:flex; gap:18px; padding:20px; border-radius:var(--radius-sm); transition:.2s var(--ease); background:transparent}
.adv:hover{background:var(--white); box-shadow:var(--shadow-sm)}
.adv__icon{
  flex-shrink:0; width:46px; height:46px; border-radius:11px;
  background:var(--steel-soft); color:var(--steel);
  display:flex; align-items:center; justify-content:center; border:1px solid #dfe8ec;
}
.adv__icon svg{width:24px; height:24px}
.adv h3{font-size:17px; margin-bottom:5px; color:var(--graphite)}
.adv p{font-size:14.5px; color:var(--muted); line-height:1.55}

/* ---------------- Solutions ---------------- */
.solutions{background:var(--white)}
.solution{
  display:grid; grid-template-columns:.92fr 1.08fr; gap:clamp(28px,4.5vw,64px);
  align-items:center; padding:clamp(30px,4vw,52px) 0;
  border-top:1px solid var(--line);
}
.solution--reverse .solution__visual{order:2}
.solution__visual{position:sticky; top:96px}
.solution__tag{
  display:inline-block; font-family:var(--f-mono); font-size:12.5px; letter-spacing:.06em;
  color:var(--steel); background:var(--steel-soft); padding:5px 12px; border-radius:6px; margin-bottom:16px;
}
.solution__title{font-size:clamp(22px,2.6vw,31px); letter-spacing:-.02em; margin-bottom:14px}
.solution__sub{font-size:clamp(15px,1.5vw,17.5px); color:var(--muted); margin-bottom:26px}

.prs{display:flex; flex-direction:column; gap:14px; margin-bottom:28px}
.prs__item{
  display:grid; grid-template-columns:112px 1fr; gap:16px; align-items:start;
  padding-left:16px; border-left:2px solid var(--line-2);
}
.prs__k{
  font-family:var(--f-head); font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase;
  color:var(--steel); padding-top:2px;
}
.prs__item p{font-size:14.5px; color:var(--ink); line-height:1.58}

.specs{
  border:1px solid var(--line); border-radius:var(--radius-sm); overflow:hidden;
  margin-bottom:26px; background:var(--white);
}
.specs__row{
  display:flex; justify-content:space-between; gap:18px; align-items:baseline;
  padding:13px 18px; border-bottom:1px solid var(--line); font-size:14px;
}
.specs__row:last-child{border-bottom:none}
.specs__row:nth-child(odd){background:#fafbfc}
.specs__row span{color:var(--muted)}
.specs__row b{font-family:var(--f-head); font-weight:600; color:var(--graphite); text-align:right}
.solution__actions{display:flex; flex-wrap:wrap; gap:12px}

/* ---------------- Software (dark) ---------------- */
.software{background:var(--graphite); color:#cdd6db; overflow:hidden}
.software__bg{
  position:absolute; inset:0; z-index:0; opacity:.5;
  background:
    linear-gradient(to right, rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.03) 1px, transparent 1px),
    radial-gradient(60% 60% at 80% 0%, rgba(92,125,146,.22), transparent 60%);
  background-size:52px 52px, 52px 52px, cover;
}
.software .container{position:relative; z-index:1}
.software__grid{display:grid; grid-template-columns:1.1fr .9fr; gap:clamp(30px,5vw,64px); align-items:start; margin-bottom:clamp(40px,6vw,64px)}
.sw-list{display:flex; flex-direction:column; gap:2px}
.sw-list li{
  display:flex; gap:14px; padding:16px 4px; font-size:16px; color:#dce3e8;
  border-bottom:1px solid rgba(255,255,255,.07); line-height:1.5;
}
.sw-list li:last-child{border-bottom:none}
.sw-list__i{color:var(--steel-2); font-family:var(--f-mono); font-weight:500; flex-shrink:0}

.sw-caps{background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.1); border-radius:var(--radius); padding:clamp(22px,3vw,32px)}
.sw-caps__head{font-family:var(--f-head); font-weight:700; color:#fff; font-size:18px; margin-bottom:18px}
.protocols{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:22px}
.chip{
  font-family:var(--f-mono); font-size:13px; color:#dfe8ec;
  background:rgba(92,125,146,.24); border:1px solid rgba(143,166,181,.35);
  padding:6px 13px; border-radius:7px;
}
.chip--muted{background:transparent; color:#8895a0; border-color:rgba(255,255,255,.14)}
.sw-caps__list{display:flex; flex-direction:column; gap:12px; margin-bottom:26px}
.sw-caps__list li{position:relative; padding-left:24px; font-size:14.5px; color:#c3cdd4; line-height:1.5}
.sw-caps__list li::before{content:""; position:absolute; left:4px; top:9px; width:7px; height:7px; border-radius:2px; background:var(--steel-2); transform:rotate(45deg)}
.sw-caps__actions{display:flex; flex-wrap:wrap; gap:12px}

/* архитектурная схема */
.arch{
  display:grid; grid-template-columns:1fr auto 1fr auto 1fr auto 1fr; align-items:stretch; gap:0;
  border:1px solid rgba(255,255,255,.1); border-radius:var(--radius); overflow:hidden;
}
.arch__node{
  display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center;
  padding:24px 18px; font-family:var(--f-head); font-weight:600; font-size:15px; color:#e7edf0;
  background:rgba(255,255,255,.03);
}
.arch__node small{display:block; margin-top:6px; font-family:var(--f-mono); font-weight:400; font-size:11px; color:#8895a0; letter-spacing:.02em}
.arch__node--accent{background:rgba(92,125,146,.2); color:#fff}
.arch__node--accent small{color:#a8c0cf}
.arch__link{
  align-self:center; width:34px; height:2px; position:relative;
  background:linear-gradient(90deg, transparent, var(--steel-2), transparent);
  background-size:200% 100%; animation:archflow 2.2s linear infinite;
}
@keyframes archflow{to{background-position:-200% 0}}
.arch__link::after{content:"›"; position:absolute; right:-2px; top:50%; transform:translateY(-50%); color:var(--steel-2); font-size:16px}

/* ---------------- Industry ---------------- */
.industry{background:var(--bg-beige)}
.industry__grid{display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin-bottom:clamp(36px,5vw,52px)}
.ind-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:28px 24px; transition:.24s var(--ease);
}
.ind-card:hover{transform:translateY(-4px); box-shadow:var(--shadow-md); border-color:var(--line-2)}
.ind-card__i{
  width:50px; height:50px; border-radius:12px; background:var(--steel-soft); color:var(--steel);
  display:flex; align-items:center; justify-content:center; margin-bottom:18px; border:1px solid #dfe8ec;
}
.ind-card__i svg{width:26px; height:26px}
.ind-card h3{font-size:17px; margin-bottom:8px}
.ind-card p{font-size:14px; color:var(--muted); line-height:1.55}

.case{
  margin:0; position:relative; background:var(--white); border:1px solid var(--line);
  border-radius:var(--radius); padding:clamp(28px,4vw,44px); box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.case::before{
  content:""; position:absolute; left:0; top:0; bottom:0; width:4px;
  background:linear-gradient(var(--steel), var(--steel-2));
}
.case__mark{
  font-family:var(--f-mono); font-size:12px; letter-spacing:.2em; color:var(--steel);
  margin-bottom:20px;
}
.case blockquote{margin:0; display:flex; flex-direction:column; gap:14px}
.case__row{display:grid; grid-template-columns:130px 1fr; gap:18px; align-items:baseline; padding-bottom:14px; border-bottom:1px solid var(--line)}
.case__row:last-child{border-bottom:none; padding-bottom:0}
.case__row span{font-family:var(--f-mono); font-size:12px; letter-spacing:.05em; text-transform:uppercase; color:var(--muted)}
.case__row b{font-family:var(--f-head); font-weight:600; font-size:16px; color:var(--graphite)}
.case figcaption{margin-top:20px; font-size:13px; color:var(--muted); font-style:italic}

/* ---------------- Contacts ---------------- */
.contacts{background:var(--graphite); color:#cdd6db}
.contacts__grid{display:grid; grid-template-columns:.85fr 1.15fr; gap:clamp(32px,5vw,72px); align-items:start}

.contacts__info{display:flex; flex-direction:column; gap:22px}
.cinfo{border-bottom:1px solid rgba(255,255,255,.09); padding-bottom:20px}
.cinfo:last-child{border-bottom:none}
.cinfo__k{font-family:var(--f-mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel-2); display:block; margin-bottom:9px}
.cinfo p{font-size:16px; color:#e7edf0; line-height:1.55}
.cinfo a{color:#e7edf0}
.cinfo a:hover{color:#fff; text-decoration:underline; text-underline-offset:3px}
.cinfo .muted{color:#8895a0}
.cinfo__msgs{display:flex; gap:10px}
.contacts .cinfo__msgs .btn--ghost{color:#dbe3e8; border-color:rgba(255,255,255,.2)}
.contacts .cinfo__msgs .btn--ghost:hover{background:rgba(255,255,255,.08); border-color:rgba(255,255,255,.45); color:#fff}

/* форма */
.cform{
  background:var(--white); color:var(--ink); border-radius:var(--radius);
  padding:clamp(24px,3.5vw,40px); box-shadow:var(--shadow-lg);
}
.cform__row{display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:16px}
.field{display:flex; flex-direction:column; gap:8px; margin-bottom:16px; border:none; padding:0}
.field__label{font-family:var(--f-head); font-weight:600; font-size:13.5px; color:var(--graphite)}
.field input[type=text],
.field input[type=tel],
.field textarea{
  width:100%; font-family:var(--f-body); font-size:15.5px; color:var(--ink);
  padding:13px 15px; border:1px solid var(--line-2); border-radius:10px; background:var(--bg);
  transition:.18s var(--ease); resize:vertical;
}
.field input:focus, .field textarea:focus{
  outline:none; border-color:var(--steel); background:#fff; box-shadow:0 0 0 3px rgba(79,107,125,.14);
}
.field input::placeholder, .field textarea::placeholder{color:#9aa4ac}

.segmented{display:grid; grid-template-columns:repeat(3,1fr); gap:8px}
.segmented label{position:relative; cursor:pointer}
.segmented input{position:absolute; opacity:0; inset:0; cursor:pointer}
.segmented span{
  display:flex; align-items:center; justify-content:center; text-align:center;
  padding:11px 8px; font-family:var(--f-head); font-weight:600; font-size:13.5px; color:var(--muted);
  border:1px solid var(--line-2); border-radius:9px; background:var(--bg); transition:.18s var(--ease); height:100%;
}
.segmented label:hover span{border-color:var(--steel); color:var(--steel)}
.segmented input:checked + span{background:var(--graphite-2); color:#fff; border-color:var(--graphite-2)}
.segmented input:focus-visible + span{box-shadow:0 0 0 3px rgba(79,107,125,.22)}

.field--check{flex-direction:row; align-items:flex-start; gap:11px; font-size:13.5px; color:var(--muted)}
.field--check input{margin-top:3px; width:17px; height:17px; accent-color:var(--steel); flex-shrink:0}
.cform__submit{width:100%; margin-top:6px; --pad-y:16px}
.cform__note{margin-top:14px; font-size:14px; text-align:center; min-height:1em}
.cform__note.ok{color:#2f8f57}
.cform__note.err{color:#c0483f}

/* ---------------- Footer ---------------- */
.footer{background:#1b2126; color:#9aa6ae; padding:clamp(44px,5vw,64px) 0 28px}
.footer__inner{display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:clamp(28px,4vw,56px); padding-bottom:36px; border-bottom:1px solid rgba(255,255,255,.08)}
.logo--footer .logo__text b{color:#eef2f4}
.logo--footer .logo__text i{color:#7d8890}
.footer__desc{margin-top:16px; font-size:14px; max-width:34ch; line-height:1.6}
.footer__nav{display:flex; flex-direction:column; gap:11px}
.footer__nav a{font-size:14.5px; color:#b3bec5; transition:.15s}
.footer__nav a:hover{color:#fff}
.footer__legal p{font-size:13.5px; margin-bottom:10px; line-height:1.5}
.footer__legal a{color:var(--steel-2)}
.footer__legal a:hover{color:#fff; text-decoration:underline; text-underline-offset:3px}
.footer__copy{display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; padding-top:24px; font-size:13px; color:#6f7a82}
.footer__made{font-family:var(--f-mono); letter-spacing:.02em}

/* ---------------- Правки по замечаниям ---------------- */
/* Логотип-картинка (шапка и подвал) */
.logo__img{height:44px; width:auto; border-radius:8px; box-shadow:var(--shadow-sm)}
.logo--footer .logo__img{box-shadow:none}

/* Блок «О компании» ближе к бегущей строке + меньше отступ до «Ключевых решений» */
.about{padding-top:clamp(28px,3.5vw,48px); padding-bottom:clamp(34px,4vw,52px)}
.solutions{padding-top:clamp(34px,4vw,52px)}

/* Фотографии решений вместо схем */
.solution__img{
  width:100%; border-radius:var(--radius); border:1px solid var(--line);
  box-shadow:var(--shadow-md); background:var(--white);
}

/* Заголовок и подзаголовок решения — на всю ширину страницы */
.solution__title, .solution__sub{grid-column:1 / -1; order:-2}
.solution{row-gap:0}

/* Многострочное значение «Степень защиты» — метка по центру по вертикали */
.specs__row--vmid{align-items:center}
.specs__row--vmid b{line-height:1.5}

/* Примеры внедрения */
.cases{display:flex; flex-direction:column; gap:20px}
.case__scheme{
  margin-top:22px; width:100%; border:1px solid var(--line);
  border-radius:var(--radius-sm); background:var(--white);
}

/* ---------------- Reveal on scroll ---------------- */
.reveal{opacity:0; transform:translateY(22px); transition:opacity .7s var(--ease), transform .7s var(--ease)}
.reveal.in{opacity:1; transform:none}

/* ---------------- Responsive ---------------- */
@media (max-width:1200px){
  .header__phone{display:none}
}
@media (max-width:1080px){
  .header__msgs{display:none}
  .header__cta{padding:11px 14px}
}
@media (max-width:1000px){
  .nav, .header__contacts{display:none}
  .header__cta{display:none}
  .burger{display:flex}
  .header{position:sticky}
  .nav{
    position:absolute; top:74px; left:0; right:0; flex-direction:column; gap:2px;
    background:#fff; border-bottom:1px solid var(--line); padding:14px var(--gutter) 22px;
    box-shadow:var(--shadow-md); transform:translateY(-12px); opacity:0; pointer-events:none;
    transition:.25s var(--ease); margin:0;
  }
  .nav.open{display:flex; transform:none; opacity:1; pointer-events:auto}
  .nav__link{padding:14px 12px; font-size:16px; border-bottom:1px solid var(--line)}
  .nav__link:last-child{border-bottom:none}

  .hero__inner{grid-template-columns:1fr; gap:36px}
  .hero__visual{order:-1; max-width:520px}
  .about__grid{grid-template-columns:1fr; gap:34px}
  .software__grid{grid-template-columns:1fr}
  .contacts__grid{grid-template-columns:1fr}
  .industry__grid{grid-template-columns:repeat(2,1fr)}

  .solution, .solution--reverse{grid-template-columns:1fr; gap:28px}
  .solution--reverse .solution__visual{order:-1}
  .solution__visual{position:static; max-width:520px}

  .arch{grid-template-columns:1fr; }
  .arch__link{width:2px; height:26px; justify-self:center; background:linear-gradient(180deg, transparent, var(--steel-2), transparent)}
  .arch__link::after{content:"⌄"; right:50%; transform:translateX(50%)}
}

@media (max-width:640px){
  body{font-size:16px}
  .header__inner{height:64px}
  .nav{top:64px}
  .hero__stats{grid-template-columns:1fr; }
  .hero__stat{border-right:none; border-bottom:1px solid var(--line); padding:16px 0 !important}
  .hero__stat:last-child{border-bottom:none}
  .hero__actions .btn{flex:1}
  .industry__grid{grid-template-columns:1fr}
  .cform__row{grid-template-columns:1fr}
  .prs__item{grid-template-columns:1fr; gap:6px}
  .prs__k{padding-top:0}
  .specs__row{flex-direction:column; gap:3px}
  .specs__row b{text-align:left}
  .segmented{grid-template-columns:1fr}
  .case__row{grid-template-columns:1fr; gap:4px}
  .footer__inner{grid-template-columns:1fr; gap:30px}
  .footer__copy{flex-direction:column}
  .schematic__label{font-size:9px}
}

/* ---------------- Motion / a11y ---------------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none !important; scroll-behavior:auto !important}
  .reveal{opacity:1; transform:none; transition:none}
}
:focus-visible{outline:2px solid var(--steel); outline-offset:2px; border-radius:4px}
::selection{background:var(--steel); color:#fff}