/* ===== DESIGN TOKENS ===== */
:root {
  --bg: #070B14;
  --bg-2: #0D1322;
  --surface: rgba(15, 27, 47, 0.78);
  --surface-strong: #131B2E;
  --text: #E6EEF8;
  --muted: #8AA0BF;
  --muted-2: #60748f;
  --accent: #00D9FF;
  --accent-2: #6df0ff;
  --success: #68f2b6;
  --danger: #ff5f73;
  --border: rgba(255,255,255,.11);
  --border-strong: rgba(0,217,255,.38);
  --shadow: 0 24px 80px rgba(0,0,0,.45);
  --font-head: 'Golos Text', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(0,217,255,.13), transparent 28rem),
    radial-gradient(circle at 90% 15%, rgba(112,78,255,.12), transparent 30rem),
    linear-gradient(180deg, var(--bg), #060b16 36%, var(--bg));
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; }

/* Grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.75), transparent 85%);
  z-index: -2;
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--font-head); letter-spacing: -.035em; }
img { max-width: 100%; display: block; }

.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.section { position: relative; padding: 96px 0; }

/* Ambient glow */
.page-glow {
  position: fixed;
  width: 420px; height: 420px;
  left: 50%; top: 10%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0,217,255,.08), transparent 70%);
  filter: blur(10px);
  pointer-events: none;
  z-index: -3;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 14px; left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  width: min(1180px, calc(100% - 28px));
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 14px 12px 18px;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 22px;
  background: rgba(7,11,20,.62);
  backdrop-filter: blur(22px);
  box-shadow: 0 18px 70px rgba(0,0,0,.32);
  transition: border-color .25s, background .25s;
}
.site-header.is-scrolled {
  background: rgba(7,11,20,.86);
  border-color: rgba(0,217,255,.2);
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 14px;
  box-shadow: 0 0 34px rgba(0,217,255,.2);
}
.brand-mark svg { width: 44px; height: 44px; display: block; }
.brand-mark rect { fill: var(--accent); }
.brand-mark path { stroke: #04111a; stroke-width: 3.1; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.brand-text { display: grid; line-height: 1.1; }
.brand-text strong { font-family: var(--font-head); letter-spacing: .08em; font-size: 18px; }
.brand-text small { color: var(--muted); font-size: 11px; margin-top: 4px; letter-spacing: .03em; }

.site-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.site-nav a {
  color: #c6d6ea; font-size: 14px; font-weight: 600;
  padding: 10px 12px; border-radius: 999px;
  transition: color .2s, background .2s;
}
.site-nav a:hover { color: #fff; background: rgba(255,255,255,.07); }

.header-cta {
  background: var(--accent); color: #04111a;
  padding: 12px 18px; border-radius: 999px;
  font-weight: 800; font-size: 14px;
  box-shadow: 0 0 24px rgba(0,217,255,.22);
  transition: transform .2s, box-shadow .2s;
}
.header-cta:hover { transform: translateY(-2px); box-shadow: 0 0 36px rgba(0,217,255,.34); }

.nav-toggle {
  display: none; width: 44px; height: 44px;
  border: 1px solid var(--border); background: rgba(255,255,255,.04);
  border-radius: 12px; color: white; cursor: pointer;
}
.nav-toggle span { display: block; width: 18px; height: 2px; margin: 4px auto; background: currentColor; border-radius: 2px; }

/* ===== HERO ===== */
.hero {
  min-height: 820px;
  display: grid; align-items: center;
  padding-top: 150px; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.circuit-grid {
  position: absolute; inset: 0; opacity: .58;
  background:
    linear-gradient(120deg, transparent 0 46%, rgba(0,217,255,.12) 46.4% 46.7%, transparent 47% 100%),
    radial-gradient(circle at 20% 30%, rgba(0,217,255,.55) 0 1px, transparent 2px),
    radial-gradient(circle at 75% 65%, rgba(109,240,255,.45) 0 1px, transparent 2px);
  background-size: 260px 260px, 90px 90px, 120px 120px;
  mask-image: linear-gradient(to bottom, #000, transparent 90%);
}
.orb { position: absolute; border-radius: 50%; filter: blur(30px); opacity: .62; }
.orb-one { width: 420px; height: 420px; right: 3%; top: 17%; background: rgba(0,217,255,.15); }
.orb-two { width: 300px; height: 300px; left: 8%; bottom: 10%; background: rgba(112,78,255,.13); }

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
  align-items: center; gap: 64px;
}

.eyebrow {
  margin: 0 0 16px; color: var(--accent);
  font-size: 12px; font-weight: 800;
  letter-spacing: .14em; text-transform: uppercase;
}
h1 {
  max-width: 820px; margin-bottom: 24px;
  font-size: clamp(44px, 6vw, 78px); line-height: .96;
}
h2 { margin-bottom: 18px; font-size: clamp(32px, 4vw, 52px); line-height: 1.04; }
h3 { margin-bottom: 12px; font-size: 22px; line-height: 1.18; }
.lead { max-width: 720px; color: #bdd0e6; font-size: clamp(17px, 2vw, 21px); line-height: 1.65; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 22px; border-radius: 14px;
  font-weight: 800; border: 1px solid transparent; cursor: pointer;
  transition: transform .2s, border-color .2s, background .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  color: #031018;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 20px 40px rgba(0,217,255,.18);
}
.btn-secondary {
  color: var(--text);
  background: rgba(255,255,255,.055);
  border-color: rgba(255,255,255,.17);
}
.btn-secondary:hover { border-color: rgba(0,217,255,.42); background: rgba(0,217,255,.07); }

.hero-stats {
  display: flex; flex-wrap: wrap; gap: 24px; margin-top: 36px;
  padding-top: 28px; border-top: 1px solid var(--border);
}
.stat strong {
  display: block; color: var(--accent);
  font-family: var(--font-head); font-size: 36px; font-weight: 800;
  line-height: 1;
}
.stat span { display: block; color: var(--muted); font-size: 13px; margin-top: 4px; }

/* Hero panel */
.hero-panel {
  position: relative; padding: 24px;
  border: 1px solid rgba(0,217,255,.2);
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(18,31,55,.86), rgba(10,18,34,.76));
  box-shadow: var(--shadow); overflow: hidden;
}
.hero-panel::before {
  content: ''; position: absolute; inset: -1px;
  background: linear-gradient(135deg, rgba(0,217,255,.22), transparent 32%, rgba(255,255,255,.08));
  pointer-events: none;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude; padding: 1px; border-radius: inherit;
}
.panel-top {
  display: flex; justify-content: space-between; gap: 16px;
  align-items: flex-start; margin-bottom: 24px;
}
.panel-top p { color: var(--muted); margin-bottom: 4px; }
.panel-top strong { font-size: 36px; font-family: var(--font-head); }
.status-dot {
  color: var(--success); background: rgba(104,242,182,.1);
  border: 1px solid rgba(104,242,182,.24);
  padding: 7px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em;
}
.system-map {
  position: relative;
  display: grid; grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px; padding: 12px 0 22px;
}
.node {
  min-height: 72px;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 14px;
  border-radius: 18px; color: #d7e7f9;
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.09);
  font-weight: 800;
}
.node-main {
  grid-column: 1 / -1; min-height: 96px; gap: 12px;
  color: #031018;
  background: linear-gradient(135deg, rgba(0,217,255,.95), rgba(109,240,255,.82));
}
.node-main svg { width: 26px; height: 26px; }
.node-main path { stroke: #031018; stroke-width: 2; stroke-linecap: round; fill: none; }
.panel-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.panel-metrics div {
  padding: 14px; border-radius: 16px;
  background: rgba(0,0,0,.17); border: 1px solid rgba(255,255,255,.08);
}
.panel-metrics strong { display: block; font: 800 26px var(--font-head); color: var(--accent); }
.panel-metrics span { display: block; color: var(--muted); font-size: 12px; line-height: 1.35; }

/* ===== INTRO STRIP ===== */
.intro-strip { padding: 0 0 52px; }
.strip-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; border: 1px solid var(--border);
  border-radius: 28px; overflow: hidden;
  background: var(--border);
}
.strip-grid > div { padding: 28px; background: rgba(12,22,40,.78); }
.mini-label {
  display: block; margin-bottom: 10px; color: var(--accent);
  font-size: 12px; font-weight: 800;
  text-transform: uppercase; letter-spacing: .12em;
}
.strip-grid p { margin: 0; color: #c3d4e8; line-height: 1.65; }

/* ===== SOLUTIONS ===== */
.section-head { max-width: 820px; margin-bottom: 42px; }
.section-head p:not(.eyebrow) { color: var(--muted); font-size: 18px; line-height: 1.7; }

.solutions-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.solution-card {
  padding: 26px; border-radius: 26px;
  background: linear-gradient(180deg, rgba(19,32,55,.82), rgba(12,22,40,.78));
  border: 1px solid var(--border);
  box-shadow: 0 18px 52px rgba(0,0,0,.18);
  transition: transform .25s, border-color .25s, background .25s;
}
.solution-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  background: linear-gradient(180deg, rgba(19,39,66,.92), rgba(12,22,40,.82));
}
.icon-wrap {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  margin-bottom: 28px; border-radius: 18px;
  background: rgba(0,217,255,.1); border: 1px solid rgba(0,217,255,.18);
}
.icon-wrap svg { width: 27px; height: 27px; }
.icon-wrap path { stroke: var(--accent); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; fill: none; }
.solution-card p, .process-copy p, .cta-content p { color: var(--muted); line-height: 1.7; }

/* ===== PROJECTS ===== */
.projects { background: linear-gradient(180deg, transparent, rgba(255,255,255,.025), transparent); }
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.project-card {
  border-radius: 26px; overflow: hidden;
  border: 1px solid var(--border);
  background: rgba(14,25,45,.76);
  transition: transform .25s, border-color .25s;
}
.project-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.project-img {
  height: 200px;
  overflow: hidden;
}
.project-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s ease;
}
.project-card:hover .project-img img { transform: scale(1.05); }
.project-info { padding: 22px; }
.project-info h3 { font-size: 18px; margin-bottom: 8px; }
.project-info p { color: var(--muted); font-size: 14px; line-height: 1.6; margin-bottom: 14px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.project-tags span {
  padding: 5px 10px; border-radius: 999px;
  background: rgba(0,217,255,.08); border: 1px solid rgba(0,217,255,.15);
  color: var(--accent); font-size: 11px; font-weight: 700;
  letter-spacing: .04em;
}
.projects-cta { text-align: center; margin-top: 36px; }

/* ===== PROCESS ===== */
.process-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 54px; align-items: start; }
.process-copy { position: sticky; top: 128px; }
.process-copy .btn { margin-top: 22px; }
.timeline { display: grid; gap: 14px; }
.step {
  display: grid; grid-template-columns: 58px 1fr; gap: 18px;
  padding: 22px; border: 1px solid var(--border);
  background: rgba(13,24,43,.72); border-radius: 24px;
}
.step > span {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 16px; color: #031018;
  background: var(--accent); font-weight: 900;
}
.step h3 { font-size: 20px; margin-bottom: 6px; }
.step p { margin: 0; color: var(--muted); line-height: 1.7; }

/* ===== PROTOCOLS ===== */
.protocols { padding: 60px 0; }
.protocol-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.protocol-tags span {
  padding: 10px 18px; border-radius: 999px;
  background: rgba(255,255,255,.05); border: 1px solid var(--border);
  color: #d7e7f9; font-size: 14px; font-weight: 700;
  transition: border-color .2s, background .2s;
}
.protocol-tags span:hover { border-color: var(--border-strong); background: rgba(0,217,255,.07); }

/* ===== CTA / CONTACTS ===== */
.cta-section { padding-bottom: 84px; }
.cta-card {
  display: grid; grid-template-columns: .95fr 1.05fr;
  gap: 34px; padding: 38px;
  border: 1px solid rgba(0,217,255,.24);
  border-radius: 34px;
  background: radial-gradient(circle at 20% 0%, rgba(0,217,255,.16), transparent 28rem), rgba(13,24,43,.86);
  box-shadow: var(--shadow);
}
.contact-info { display: flex; flex-direction: column; gap: 12px; margin-top: 28px; }
.contact-item {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 16px; border-radius: 999px;
  background: rgba(255,255,255,.06); border: 1px solid var(--border);
  color: #d6e7fb; font-weight: 700; font-size: 14px;
  transition: border-color .2s, background .2s;
  width: fit-content;
}
.contact-item:hover { border-color: rgba(0,217,255,.4); background: rgba(0,217,255,.07); }
.contact-item svg { flex-shrink: 0; color: var(--accent); }

.contact-form {
  display: grid; gap: 14px; padding: 22px;
  border-radius: 26px; background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.09);
}
.contact-form label { display: grid; gap: 8px; }
.contact-form span { color: #d8e7f8; font-size: 13px; font-weight: 800; }
input, select, textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 14px; background: rgba(255,255,255,.055);
  color: var(--text); padding: 14px 15px; outline: none;
  transition: border-color .2s, background .2s, box-shadow .2s;
}
select { color-scheme: dark; }
textarea { resize: vertical; min-height: 118px; }
input:focus, select:focus, textarea:focus {
  border-color: rgba(0,217,255,.6);
  background: rgba(0,217,255,.055);
  box-shadow: 0 0 0 4px rgba(0,217,255,.08);
}
.is-invalid {
  border-color: var(--danger) !important;
  box-shadow: 0 0 0 4px rgba(255,95,115,.08) !important;
}
.form-note { margin: 0; color: var(--muted-2); font-size: 13px; line-height: 1.5; }
.form-note.success { color: var(--success); }
.form-note.error { color: var(--danger); }
.btn-submit { width: 100%; }

/* ===== FOOTER ===== */
.site-footer {
  padding: 32px 0 42px;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,.14);
}
.footer-inner {
  display: flex; align-items: center;
  justify-content: space-between; gap: 24px;
  color: var(--muted);
}
.footer-nav { display: flex; gap: 18px; }
.footer-nav a { color: #c9d9eb; font-weight: 700; font-size: 14px; }
.footer-inner p { margin: 0; }
.footer-brand .brand-text small { text-transform: uppercase; letter-spacing: .13em; }

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0; transform: translateY(22px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 980px) {
  .site-header { min-height: 66px; }
  .header-cta { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
  .site-nav {
    position: fixed; inset: 82px 0 auto 0;
    display: none; flex-direction: column;
    align-items: stretch; gap: 8px; padding: 18px;
    border: 1px solid var(--border); border-radius: 22px;
    background: rgba(7,11,20,.96); box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 16px; background: rgba(255,255,255,.045); }

  .hero { min-height: auto; padding: 160px 0 78px; }
  .hero-inner { grid-template-columns: 1fr; gap: 42px; }
  .process-layout { grid-template-columns: 1fr; }
  .process-copy { position: static; }
  .cta-card { grid-template-columns: 1fr; }

  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .strip-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .container { width: min(100% - 28px, 1180px); }
  .section { padding: 70px 0; }
  .hero { padding-top: 130px; }
  .brand-text small { display: none; }
  .brand-text strong { font-size: 16px; }
  .site-header { top: 10px; width: calc(100% - 20px); border-radius: 18px; }
  h1 { font-size: clamp(38px, 12vw, 54px); }
  h2 { font-size: clamp(28px, 9vw, 38px); }
  .lead { font-size: 16px; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 16px; }
  .stat strong { font-size: 28px; }
  .hero-panel { padding: 16px; border-radius: 24px; }
  .system-map, .panel-metrics, .solutions-grid, .projects-grid { grid-template-columns: 1fr; }
  .project-img { height: 160px; }
  .step { grid-template-columns: 1fr; }
  .cta-card { padding: 18px; border-radius: 26px; }
  .contact-form { padding: 16px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-nav { flex-wrap: wrap; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}