/* ═══════════════════════════════════════════════════════════
   VirtLab · Синтез: dpocenter.sfedu.ru + kazandigitalweek.com
   ═══════════════════════════════════════════════════════════ */

:root {
  /* Тёмные (hero, showcase, CTA, footer) */
  --dark:         #0a1b2e;
  --dark-2:       #0f2a4a;
  --dark-3:       #15375c;

  /* Светлые */
  --bg:           #ffffff;
  --bg-alt:       #f4f7fb;
  --surface:      #ffffff;

  /* Бренд */
  --primary:      #1a3a6b;
  --primary-light:#2563eb;
  --accent:       #00d4ff;
  --accent-2:     #ff8c42;

  /* Текст */
  --text:         #0b1a2e;
  --text-muted:   #64748b;
  --text-on-dark: #e6edf5;
  --text-muted-dark: #8ba3bd;

  --border:       #e2e8f0;

  --radius:       16px;
  --radius-sm:    12px;
  --radius-lg:    24px;
  --shadow-sm:    0 1px 3px rgba(15,23,42,.06);
  --shadow:       0 8px 30px rgba(15,23,42,.08);
  --shadow-lg:    0 20px 60px rgba(15,23,42,.14);
  --shadow-glow:  0 20px 60px rgba(0,212,255,.18);
  --container:    1240px;
  --section-pad:  clamp(64px, 8vw, 120px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-light); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary); }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.15; font-weight: 800; letter-spacing: -0.025em; }
code, .mono {
  font-family: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  font-feature-settings: 'tnum';
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════════ HEADER ═══════════ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 24px; min-height: 76px;
}
.brand { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.brand-logo { height: 48px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-title { font-weight: 700; font-size: 1rem; color: var(--primary); }
.brand-subtitle { font-size: .82rem; color: var(--text-muted); }

.main-nav { margin-left: auto; }
.main-nav > ul { display: flex; gap: 4px; align-items: center; }
.main-nav a {
  display: block; padding: 10px 14px;
  font-size: .92rem; font-weight: 500;
  color: var(--text); border-radius: 8px;
  transition: all .2s; white-space: nowrap;
}
.main-nav a:hover { background: #eff6ff; color: var(--primary); }
.main-nav a.active { color: var(--primary); background: #eff6ff; font-weight: 600; }

.has-sub { position: relative; }
.has-sub > a::after { content: ' ▾'; font-size: .7em; opacity: .5; }
.submenu {
  position: absolute; top: calc(100% + 8px); left: 0;
  min-width: 320px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg); padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all .2s;
}
.has-sub:hover .submenu { opacity: 1; visibility: visible; transform: translateY(0); }
.submenu a { padding: 10px 12px; white-space: normal; font-size: .88rem; }

.lang-switch {
  display: flex; gap: 2px;
  background: #f1f5f9; padding: 4px; border-radius: 8px;
  flex-shrink: 0;
}
.lang-switch a {
  padding: 6px 12px; font-size: .85rem; font-weight: 600;
  color: var(--text-muted); border-radius: 6px;
}
.lang-switch a.active { background: #fff; color: var(--primary); box-shadow: var(--shadow-sm); }

.burger {
  display: none; background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; padding: 8px;
  flex-direction: column; justify-content: space-between;
}
.burger span {
  display: block; height: 2px; background: var(--text); border-radius: 2px;
  transition: all .2s;
}

/* ═══════════ HERO (ТЁМНЫЙ) ═══════════ */
.hero {
  position: relative;
  background:
    radial-gradient(ellipse at 15% 0%, rgba(0,212,255,.14), transparent 50%),
    radial-gradient(ellipse at 85% 100%, rgba(37,99,235,.18), transparent 50%),
    linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark) 100%);
  color: var(--text-on-dark);
  padding: clamp(72px, 9vw, 130px) 0 clamp(72px, 9vw, 120px);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: .65;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--accent);
  margin-bottom: 24px;
  padding: 7px 16px;
  background: rgba(0,212,255,.1);
  border: 1px solid rgba(0,212,255,.25);
  border-radius: 100px;
}
.hero-live-dot {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(1.3); }
}

.hero h1 {
  color: #fff;
  font-size: clamp(2.3rem, 5.5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
}
.hero-h1-accent {
  background: linear-gradient(135deg, var(--accent), #4dabf7);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  color: var(--text-muted-dark);
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-highlights {
  display: flex;
  gap: 48px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.1);
  flex-wrap: wrap;
}
.hero-highlight { display: flex; flex-direction: column; gap: 4px; }
.hero-num {
  font-size: 2.25rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  letter-spacing: -0.02em;
}
.hero-lbl {
  font-size: .78rem;
  color: var(--text-muted-dark);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 600;
}

/* Hero collage */
.hero-visual { position: relative; }
.hero-collage { position: relative; padding-bottom: 60px; }
.hero-collage-main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.5), 0 0 60px rgba(0,212,255,.15);
  /*transform: rotate(-1.5deg);*/
  transform: none;
  transition: transform .4s;
  border: 1px solid rgba(0,212,255,.2);
}
.hero-collage-main:hover { transform: rotate(0); }
/* размер катинки в секции HERO */
/*.hero-collage-main img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }*/
.hero-collage-main img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
/*.hero-collage-main img { width: 100%; aspect-ratio: 4/3; object-fit: contain; }*/

.hero-collage-secondary {
  position: absolute;
  bottom: 0;
  right: -24px;
  width: 55%;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.5), 0 0 40px rgba(0,212,255,.1);
  border: 5px solid #fff;
  /*transform: rotate(2deg);*/
  transform: none;
  transition: transform .4s;
  background: #fff;
}
/*.hero-collage-secondary:hover { transform: rotate(0); }*/
.hero-collage-secondary:hover { transform: none; }
/* размер катинки дополнительнеой в секции HERO */
/*.hero-collage-secondary img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }*/
.hero-collage-secondary img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }

.hero-badge {
  
  position: absolute;
  top: 24px;
  left: -16px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  padding: 12px 20px;
  border-radius: 100px;
  box-shadow: 0 12px 40px rgba(0,0,0,.3);
  font-size: .85rem;
  font-weight: 600;
  color: var(--primary);
  transform: rotate(-3deg);
  animation: floatBadge 4s ease-in-out infinite;
  display: none; 
}



.hero-badge-icon { font-size: 1.1rem; }
@keyframes floatBadge {
  0%, 100% { transform: rotate(-3deg) translateY(0); }
  50%      { transform: rotate(-3deg) translateY(-6px); }
}

/* ═══════════ BUTTONS ═══════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: 100px;
  font-weight: 700;
  font-size: .95rem;
  transition: all .25s;
  cursor: pointer;
  white-space: nowrap;
  border: 2px solid transparent;
}
.btn-accent {
  background: var(--accent);
  color: var(--dark) !important;
  box-shadow: 0 8px 30px rgba(0,212,255,.4);
}
.btn-accent:hover {
  background: #22e0ff;
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,212,255,.55);
}
.btn-ghost-light {
  background: transparent;
  color: #fff !important;
  border-color: rgba(255,255,255,.25);
}
.btn-ghost-light:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
  background: rgba(0,212,255,.05);
}

/* ═══════════ SECTIONS ═══════════ */
.section { padding: var(--section-pad) 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  color: var(--primary);
  margin-bottom: 20px;
  max-width: 720px;
}
.section-title-light { color: #fff; }
.section-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 640px;
  margin-bottom: 40px;
  line-height: 1.65;
}
.section-lead-light { color: var(--text-muted-dark); }

/* ═══════════ STATS ═══════════ */
.stats-section {
  padding: clamp(48px, 6vw, 80px) 0;
  background: var(--bg);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat {
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .3s;
}
.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.stat-num {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--primary);
  margin-bottom: 14px;
  letter-spacing: -0.03em;
}
.stat-label { font-size: .9rem; color: var(--text-muted); line-height: 1.5; }

/* ═══════════ STATEMENT ═══════════ */
/* Было
.statement { background: var(--bg); }
.statement-inner {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.statement-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--primary);
  margin-bottom: 24px;
}
.statement-accent {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.statement-text {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}
*/

/* ═══════════ STATEMENT ═══════════ */
.statement {
  position: relative;
  background: var(--bg);
  overflow: hidden;
}

.statement::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 30%, rgba(0,212,255,.18), transparent 40%),
    radial-gradient(circle at 85% 70%, rgba(37,99,235,.15), transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(255,140,66,.08), transparent 50%);
  pointer-events: none;
}

.statement-inner {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.statement-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--primary);
  margin-bottom: 24px;
}

.statement-accent {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.statement-text {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}



/* ═══════════ ADVANTAGES ═══════════ */
.advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.advantage {
  position: relative;
  padding: 32px 24px 28px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .3s;
}
.advantage:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.advantage-num {
  display: block;
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
  opacity: .8;
}
.advantage h3 {
  font-size: 1.08rem;
  margin-bottom: 10px;
  color: var(--primary);
}
.advantage p { font-size: .93rem; color: var(--text-muted); line-height: 1.6; }

/* ═══════════ SHOWCASE (ТЁМНЫЙ) ═══════════ */
.showcase-section {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0,212,255,.08), transparent 50%),
    linear-gradient(180deg, var(--dark-2) 0%, var(--dark) 100%);
  color: var(--text-on-dark);
}
.showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.showcase-card {
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(0,212,255,.15);
  border-radius: var(--radius);
  overflow: hidden;
  color: var(--text-on-dark);
  transition: all .35s;
  position: relative;
}
.showcase-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0,212,255,.18), transparent 60%);
  opacity: 0;
  transition: opacity .4s;
  pointer-events: none;
  z-index: 1;
}
.showcase-card:hover::before { opacity: 1; }
.showcase-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,212,255,.4);
  box-shadow: var(--shadow-glow);
  color: var(--text-on-dark);
}
/* картинррка в секции приборы /*
.showcase-img {
  /*  aspect-ratio: 4/3; */
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #000;
  position: relative;
  z-index: 2;
}
.showcase-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s;
  opacity: .9;
}
.showcase-card:hover .showcase-img img { transform: scale(1.06); opacity: 1; }

.showcase-body {
  padding: 24px 24px 28px;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.showcase-body h3 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 6px;
  line-height: 1.4;
}
.showcase-meta {
  font-size: .82rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 600;
  margin-bottom: 16px;
}
.showcase-arrow {
  color: var(--accent);
  font-size: .88rem;
  font-weight: 600;
  margin-top: auto;
  transition: transform .3s;
  display: inline-block;
}
.showcase-card:hover .showcase-arrow { transform: translateX(6px); }

/* ═══════════ AUDIENCE ═══════════ */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.audience-card {
  position: relative;
  padding: 40px 32px;
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 20px;
  transition: all .3s;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.audience-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.audience-card:hover::after { transform: scaleX(1); }
.audience-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,212,255,.18);
}

.audience-card.featured {
  border-color: var(--primary);
  box-shadow: 0 20px 50px rgba(26,58,107,.15);
}
.audience-card.featured::after { transform: scaleX(1); }
.audience-card.featured::before {
  content: 'Популярно';
  position: absolute;
  top: 20px; right: 20px;
  background: var(--accent);
  color: var(--dark);
  font-size: .68rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: .1em;
}

.audience-icon {
  width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem;
  background: linear-gradient(135deg, #dbeafe, #cffafe);
  border-radius: 18px;
  margin-bottom: 22px;
}
.audience-card h3 {
  font-size: 1.2rem;
  color: var(--primary);
  margin-bottom: 12px;
}
.audience-card p { font-size: .95rem; color: var(--text-muted); line-height: 1.65; }

/* ═══════════ PARTNERS ═══════════ */
.partners-section {
  padding: 64px 0 80px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.partners-label {
  text-align: center;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 40px;
}
.partners-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 64px;
  flex-wrap: wrap;
}
/* логотипы партнеров */
/*
.partner-logo img {
  height: 60px;
  width: auto;
  opacity: .55;
  filter: grayscale(1);
  transition: all .3s;
}
.partner-logo:hover img {
  opacity: 1;
  filter: grayscale(0);
}
*/
/*
.partner-logo img {
  height: 80px;              
  width: auto;
  opacity: .8;               
  filter: grayscale(1);
  transition: all .3s;
}
.partner-logo:hover img {
  opacity: 1;
  filter: grayscale(0);
  transform: scale(1.1);    /* ← добавляем лёгкое увеличение *
}
*/
/* цветные */
/*
.partner-logo img {
  height: 80px;
  width: auto;
  opacity: .9;
  transition: all .3s;
}
.partner-logo:hover img {
  opacity: 1;
  transform: scale(1.08);
}
*/
.partner-logo img {
  height: 90px;              /* ← ещё крупнее */
  width: auto;
  opacity: .65;
  filter: grayscale(1);
  transition: all .4s;
}
.partner-logo:hover img {
  opacity: 1;
  filter: grayscale(0);
  transform: scale(1.1);
}

/* ═══════════ CTA (ТЁМНЫЙ) ═══════════ */
.cta-section {
  background:
    radial-gradient(ellipse at 100% 0%, rgba(0,212,255,.18), transparent 50%),
    linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  color: #fff;
  padding: clamp(56px, 7vw, 96px) 0;
  position: relative;
  overflow: hidden;
}
.cta-section::after {
  content: '';
  position: absolute;
  right: -120px; top: -120px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,212,255,.2), transparent 70%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: center;
}
.cta-section h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: #fff;
  margin-bottom: 16px;
  font-weight: 800;
}
.cta-section p {
  font-size: 1.05rem;
  color: var(--text-muted-dark);
  line-height: 1.6;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
}

/* ═══════════ FOOTER ═══════════ */
.site-footer {
  background: var(--dark);
  color: var(--text-muted-dark);
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.2fr 1fr;
  gap: 48px;
  padding: clamp(48px, 6vw, 72px) 24px 40px;
}
.site-footer h3 {
  color: #fff;
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: 20px;
  font-weight: 700;
}
.site-footer a { color: #cbd5e1; }
.site-footer a:hover { color: var(--accent); }
.footer-brand { display: flex; flex-direction: column; gap: 16px; }
.footer-logo {
  height: 56px;
  width: auto;
  /*filter: brightness(0) invert(1);
  opacity: .85;*/
  opacity: .9;
}
.footer-desc { font-size: .9rem; line-height: 1.7; color: var(--text-muted-dark); }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: .92rem; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 20px 0;
  font-size: .85rem;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: #64748b;
}
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: var(--accent); }

/* ═══════════ FLOAT CTA ═══════════ */
.float-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 50;
  background: var(--dark);
  color: #fff !important;
  border: 1px solid rgba(0,212,255,.3);
  padding: 14px 22px;
  border-radius: 100px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 12px 40px rgba(0,0,0,.25), 0 0 30px rgba(0,212,255,.15);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all .3s;
}
.float-cta:hover {
  background: var(--dark-2);
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 16px 50px rgba(0,212,255,.35);
  color: #fff !important;
}
.float-cta-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2s infinite;
}

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 1100px) {
  .advantages { grid-template-columns: repeat(2, 1fr); }
  .showcase { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .audience-grid { grid-template-columns: 1fr; }
  .hero-collage-secondary { right: 0; width: 50%; }
  .hero-badge { left: 0; }
}

@media (max-width: 960px) {
  .burger { display: flex; }
  .main-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    max-height: 0; overflow: hidden;
    transition: max-height .35s ease;
    margin: 0;
  }
  .main-nav.open { max-height: 80vh; overflow-y: auto; }
  .main-nav > ul { flex-direction: column; align-items: stretch; gap: 0; padding: 12px; }
  .main-nav a { padding: 14px 16px; font-size: 1rem; }
  .has-sub > a::after { float: right; }
  .submenu {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: none; padding: 0 0 0 16px;
    max-height: 0; overflow: hidden; transition: max-height .3s;
    min-width: 0;
  }
  .has-sub.open .submenu { max-height: 800px; }
  .submenu a { font-size: .9rem; }

  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; max-width: 520px; margin: 0 auto; width: 100%; }
  .hero-highlights { gap: 32px; margin-top: 40px; }
  .cta-inner { grid-template-columns: 1fr; gap: 32px; }
  .cta-actions { justify-content: flex-start; }
}

@media (max-width: 720px) {
  .advantages { grid-template-columns: 1fr; }
  .showcase { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .partners-row { gap: 40px; }
  .partner-logo img { height: 48px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-inner { padding: 10px 16px; gap: 12px; }
  .brand-title { font-size: .9rem; }
  .brand-logo { height: 38px; }
  .lang-switch { display: none; }
  .section-title { font-size: 1.5rem; }
  .btn { padding: 13px 24px; font-size: .9rem; }
  .hero-collage-secondary { display: none; }
  .hero-badge { font-size: .75rem; padding: 10px 14px; }
  .float-cta {
    bottom: 16px; right: 16px;
    padding: 12px 18px;
    font-size: .82rem;
  }
  .statement-title { font-size: 1.6rem; }
}
/* ═══════════════════════════════════════════════════════════
   DEVICES SHOWCASE — горизонтальная прокрутка
   ═══════════════════════════════════════════════════════════ */

.devices-section {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0,212,255,.08), transparent 50%),
    linear-gradient(180deg, var(--dark-2) 0%, var(--dark) 100%);
  color: var(--text-on-dark);
  overflow: hidden;
}

.devices-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.devices-head > div:first-child {
  max-width: 720px;
}
.devices-head .section-lead {
  margin-bottom: 0;
}

/* Кнопки-стрелки */
.devices-nav {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}
.scroll-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(0,212,255,.25);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .25s;
  padding: 0;
}
.scroll-btn:hover:not(:disabled) {
  background: rgba(0,212,255,.15);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,212,255,.3);
}
.scroll-btn:disabled {
  opacity: .3;
  cursor: not-allowed;
}
/***********************************/
/* Контейнер прокрутки */
/* Контейнер прокрутки */
.devices-scroll {
  position: relative;
  padding: 8px 0 24px;
}

.devices-scroll::before,
.devices-scroll::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  pointer-events: none;
  z-index: 3;
  opacity: 0;
  transition: opacity .3s;
}
.devices-scroll::before {
  left: 0;
  background: linear-gradient(90deg, var(--dark-2) 0%, transparent 100%);
}
.devices-scroll::after {
  right: 0;
  background: linear-gradient(-90deg, var(--dark) 0%, transparent 100%);
}
.devices-scroll.can-scroll-left::before { opacity: 1; }
.devices-scroll.can-scroll-right::after { opacity: 1; }

.devices-track {
  display: flex;
  gap: 24px;
  padding: 8px 0 24px;
  padding-left: max(24px, calc((100vw - 1240px) / 2 + 24px));
  padding-right: max(24px, calc((100vw - 1240px) / 2 + 24px));
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,212,255,.4) transparent;
}

/********************************************************************/
.devices-track::-webkit-scrollbar { height: 6px; }
.devices-track::-webkit-scrollbar-track {
  background: rgba(255,255,255,.04);
  border-radius: 100px;
  margin: 0 24px;
}
.devices-track::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  border-radius: 100px;
}
.devices-track::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.device-showcase-card {
  flex: 0 0 360px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(0,212,255,.15);
  border-radius: var(--radius);
  overflow: hidden;
  color: var(--text-on-dark);
  transition: all .35s;
  position: relative;
}
.device-showcase-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0,212,255,.18), transparent 60%);
  opacity: 0;
  transition: opacity .4s;
  pointer-events: none;
  z-index: 1;
}
.device-showcase-card:hover::before { opacity: 1; }
.device-showcase-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,212,255,.4);
  box-shadow: 0 20px 60px rgba(0,212,255,.18);
  color: var(--text-on-dark);
}

.device-showcase-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #000;
  position: relative;
  z-index: 2;
}
.device-showcase-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
  opacity: .9;
}
.device-showcase-card:hover .device-showcase-img img {
  transform: scale(1.06);
  opacity: 1;
}

.device-showcase-body {
  padding: 22px 24px 26px;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.device-showcase-body h3 {
  font-size: 1.02rem;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.35;
  min-height: 2.7em;
}
.device-showcase-body p {
  font-size: .88rem;
  color: var(--text-muted-dark);
  line-height: 1.55;
  margin-bottom: 18px;
  flex: 1;
}
.device-showcase-arrow {
  color: var(--accent);
  font-size: .88rem;
  font-weight: 600;
  margin-top: auto;
  transition: transform .3s;
  display: inline-block;
}
.device-showcase-card:hover .device-showcase-arrow {
  transform: translateX(6px);
}

.devices-footer {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

/* ═══════════════════════════════════════════════════════════
   LABS SECTION — горизонтальная прокрутка (светлая)
   ═══════════════════════════════════════════════════════════ */

.labs-section {
  background: var(--bg);
  overflow: hidden;
}

.labs-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.labs-head > div:first-child { max-width: 720px; }

.labs-eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--primary-light);
  margin-bottom: 16px;
  padding: 6px 14px;
  background: rgba(37,99,235,.08);
  border-radius: 100px;
}
.labs-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.labs-nav { display: flex; gap: 10px; flex-shrink: 0; }

.scroll-btn-dark {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .25s;
  padding: 0;
}
.scroll-btn-dark:hover:not(:disabled) {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26,58,107,.25);
}
.scroll-btn-dark:disabled {
  opacity: .3;
  cursor: not-allowed;
}

.labs-scroll {
  position: relative;
  padding: 8px 0 24px;
}
.labs-scroll::before,
.labs-scroll::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  pointer-events: none;
  z-index: 3;
  opacity: 0;
  transition: opacity .3s;
}
.labs-scroll::before {
  left: 0;
  background: linear-gradient(90deg, #fff 0%, transparent 100%);
}
.labs-scroll::after {
  right: 0;
  background: linear-gradient(-90deg, #fff 0%, transparent 100%);
}
.labs-scroll.can-scroll-left::before { opacity: 1; }
.labs-scroll.can-scroll-right::after { opacity: 1; }

.labs-track {
  display: flex;
  gap: 20px;
  padding: 8px 0 24px;
  padding-left: max(24px, calc((100vw - 1240px) / 2 + 24px));
  padding-right: max(24px, calc((100vw - 1240px) / 2 + 24px));
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: rgba(26,58,107,.3) transparent;
}
.labs-track::-webkit-scrollbar { height: 6px; }
.labs-track::-webkit-scrollbar-track {
  background: rgba(0,0,0,.04);
  border-radius: 100px;
  margin: 0 24px;
}
.labs-track::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 100px;
}

.lab-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  padding: 28px 24px 26px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.lab-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.lab-card:hover::after { transform: scaleX(1); }
.lab-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,212,255,.15);
}

.lab-card-num {
  display: inline-block;
  font-size: .82rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .05em;
  margin-bottom: 14px;
}
.lab-card h3 {
  font-size: 1.02rem;
  color: var(--primary);
  margin-bottom: 10px;
  line-height: 1.35;
  min-height: 2.7em;
}
.lab-card p {
  font-size: .88rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin: 0;
  flex: 1;
}

.labs-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
  justify-content: center;
}

/* ═══════════════════════════════════════════════════════════
   АДАПТИВ ДЛЯ ПРОКРУТКИ
   ═══════════════════════════════════════════════════════════ */

@media (hover: none) and (pointer: coarse) {
  .devices-nav { display: none; }
  .labs-nav { display: none; }
  .devices-track {
    padding-left: 20px;
    padding-right: 20px;
  }
  .device-showcase-card { flex: 0 0 280px; }
}

@media (max-width: 960px) {
  .devices-head,
  .labs-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .devices-nav,
  .labs-nav { display: none; }
  .device-showcase-card { flex: 0 0 320px; }
  .lab-card { flex: 0 0 280px; }
  .devices-scroll::before,
  .devices-scroll::after,
  .labs-scroll::before,
  .labs-scroll::after { width: 40px; }
}

@media (max-width: 520px) {
  .devices-track,
  .labs-track {
    padding-left: 16px;
    padding-right: 16px;
    gap: 16px;
  }
  .device-showcase-card { flex: 0 0 260px; }
  .device-showcase-body { padding: 18px 18px 22px; }
  .device-showcase-body h3 { font-size: .95rem; min-height: auto; }
  .lab-card { flex: 0 0 260px; }
  .lab-card h3 { font-size: .95rem; min-height: auto; }
}

/* ═══════════════════════════════════════════════════════════
   СТРАНИЦЫ ПРИБОРОВ И УСТРОЙСТВ — детальные
   ═══════════════════════════════════════════════════════════ */

/* Секция-обёртка с боковой панелью */
/*
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  padding-top: 56px;
  padding-bottom: 72px;
}
*/
/* Контент статьи */
.content {
  background: var(--surface);
  min-width: 0;
  font-size: 1.02rem;
  line-height: 1.75;
  color: #334155;
}

/* Ведущий абзац (лид) */
.lead-paragraph {
  font-size: 1.15rem;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 32px;
  padding-left: 20px;
  border-left: 3px solid var(--accent);
}

/* Заголовки внутри статьи */
.content h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  color: var(--primary);
  margin: 40px 0 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.content h2:first-child { margin-top: 0; }
.content h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin: 28px 0 12px;
}

.content p { margin-bottom: 16px; }
.content p:last-child { margin-bottom: 0; }

/* Фото прибора */
.device-figure {
  margin: 28px 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: #f8fafc;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.device-figure img {
  width: 100%;
  height: auto;
  display: block;
}
.device-figure figcaption {
  padding: 14px 20px;
  font-size: .88rem;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
  background: #f8fafc;
  border-top: 1px solid var(--border);
}

/* Список характеристик */
.spec-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.spec-list > li {
  position: relative;
  padding: 12px 0 12px 32px;
  border-bottom: 1px solid #f1f5f9;
  color: #334155;
  line-height: 1.6;
}
.spec-list > li:last-child { border-bottom: none; }
.spec-list > li::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 20px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0,212,255,.6);
}

/* Вложенные списки */
.spec-list ul {
  list-style: none;
  padding: 8px 0 0;
  margin: 0;
}
.spec-list ul li {
  position: relative;
  padding: 4px 0 4px 20px;
  font-size: .96rem;
  color: var(--text-muted);
}
.spec-list ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
  opacity: .7;
}

/* Кнопки в конце статьи */
.content-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.btn-primary {
  background: var(--primary);
  color: #fff !important;
  box-shadow: 0 8px 24px rgba(26,58,107,.25);
}
.btn-primary:hover {
  background: var(--dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(26,58,107,.35);
}

.btn-ghost {
  background: transparent;
  color: var(--primary) !important;
  border: 2px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--primary);
  background: #fff;
  transform: translateY(-2px);
}

/* ═══════════════ АДАПТИВ ═══════════════ */
@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 40px;
    padding-bottom: 48px;
  }
  .sidebar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
  }
}

@media (max-width: 520px) {
  .content { font-size: 1rem; }
  .lead-paragraph {
    font-size: 1.05rem;
    padding-left: 16px;
  }
  .device-figure { margin: 20px -16px; border-radius: 0; }
  .content-actions .btn { width: 100%; justify-content: center; }
}

/* Полноширинный layout — без сайдбара */
.layout-full {
  max-width: 900px;
  margin: 0 auto;
  padding-top: 56px;
  padding-bottom: 72px;
}

/* На случай если где-то остался старый .layout с сайдбаром */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  padding-top: 56px;
  padding-bottom: 72px;
}

/* ═══════════════════════════════════════════════════════════
   СТРАНИЦЫ ПРОДУКТОВ — детальные страницы приборов и устройств
   ═══════════════════════════════════════════════════════════ */

/* ═════ ПРОДУКТ HERO (тёмный, с фото справа) ═════ */
.product-hero {
  position: relative;
  background:
    radial-gradient(ellipse at 15% 0%, rgba(0,212,255,.14), transparent 50%),
    radial-gradient(ellipse at 85% 100%, rgba(37,99,235,.18), transparent 50%),
    linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark) 100%);
  color: var(--text-on-dark);
  padding: clamp(64px, 8vw, 110px) 0 clamp(64px, 8vw, 100px);
  overflow: hidden;
}
.product-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 8% 15%, rgba(0,212,255,.08), transparent 30%),
    radial-gradient(circle at 92% 85%, rgba(37,99,235,.1), transparent 30%);
  pointer-events: none;
}
.product-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}

.breadcrumbs {
  display: flex;
  gap: 8px;
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.breadcrumbs a { color: rgba(255,255,255,.85); }
.breadcrumbs a:hover { color: var(--accent); text-decoration: underline; }

.product-hero-vendor {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: .82rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 6px 14px;
  background: rgba(0,212,255,.1);
  border: 1px solid rgba(0,212,255,.25);
  border-radius: 100px;
  margin-bottom: 20px;
}

.product-hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: #fff;
  margin-bottom: 12px;
}

.product-hero-desc {
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  color: var(--text-muted-dark);
  margin-bottom: 36px;
}

.product-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-bottom: 40px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.fact { display: flex; flex-direction: column; gap: 4px; }
.fact-num {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}
.fact-label {
  font-size: .78rem;
  color: var(--text-muted-dark);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 600;
}

.product-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Фото прибора в hero */
.product-hero-visual { position: relative; }
.product-hero-shot {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.5), 0 0 60px rgba(0,212,255,.15);
  border: 1px solid rgba(0,212,255,.25);
  /*transform: rotate(-1.5deg);*/
  transform: none;
  transition: transform .4s;
  background: #000;
}
/*.product-hero-shot:hover { transform: rotate(0); }*/
.product-hero-shot:hover { transform: none; }
.product-hero-shot img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
}

.product-hero-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 8px 16px;
  background: rgba(255,255,255,.95);
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: .05em;
  text-transform: uppercase;
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  display: none; 
}

/* ═════ ОБЩИЕ СЕКЦИИ ПРОДУКТА ═════ */
.container-narrow {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-product {
  padding: clamp(64px, 8vw, 110px) 0;
  background: var(--bg);
}

.section-product-dark {
  padding: clamp(64px, 8vw, 110px) 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0,212,255,.08), transparent 50%),
    linear-gradient(180deg, var(--dark-2) 0%, var(--dark) 100%);
  color: var(--text-on-dark);
}

/* Номер секции */
.section-num {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: .8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 24px;
  padding: 6px 14px;
  background: rgba(0,212,255,.1);
  border-radius: 100px;
}
.section-num-dark {
  background: rgba(0,212,255,.12);
  border: 1px solid rgba(0,212,255,.25);
}

/* Ведущий абзац */
.lead-paragraph {
  font-size: clamp(1.1rem, 1.5vw, 1.25rem);
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 32px;
  padding-left: 24px;
  border-left: 4px solid var(--accent);
}

/* Подзаголовок в тёмной секции */
.spec-subtitle {
  font-size: 1.15rem;
  color: #fff;
  margin: 40px 0 20px;
  font-weight: 700;
}

/* ═════ СЕТКА СПЕЦИФИКАЦИЙ (цифры) ═════ */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin: 40px 0;
}
.spec-block {
  padding: 24px 20px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(0,212,255,.15);
  border-radius: var(--radius);
  transition: all .3s;
}
.spec-block:hover {
  background: rgba(0,212,255,.08);
  border-color: rgba(0,212,255,.4);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,212,255,.15);
}
.spec-num {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.spec-block p {
  font-size: .88rem;
  color: var(--text-muted-dark);
  margin: 0;
  line-height: 1.4;
}

/* ═════ СПИСОК В ТЁМНОЙ СЕКЦИИ ═════ */
.spec-list-dark {
  list-style: none;
  padding: 0;
  margin: 0;
}
.spec-list-dark li {
  position: relative;
  padding: 12px 0 12px 32px;
  color: var(--text-muted-dark);
  line-height: 1.6;
  font-size: .96rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.spec-list-dark li:last-child { border-bottom: none; }
.spec-list-dark li::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 22px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent);
}

/* ═════ СЕТКА ФИЧ (карточки) ═════ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin: 40px 0 0;
}
.feature-card {
  position: relative;
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .3s;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.feature-card:hover::after { transform: scaleX(1); }
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 20px 50px rgba(0,212,255,.15);
}
.feature-card h3 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 10px;
  line-height: 1.3;
}
.feature-card p {
  font-size: .93rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

/* ═════ СКРИНШОТ МОДЕЛИ ═════ */
.product-shot {
  margin: 40px 0 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.5), 0 0 60px rgba(0,212,255,.12);
  border: 1px solid rgba(0,212,255,.2);
  background: #000;
}
.product-shot img { width: 100%; height: auto; display: block; }
.product-shot figcaption {
  padding: 16px 24px;
  font-size: .88rem;
  color: var(--text-muted-dark);
  text-align: center;
  font-style: italic;
  background: rgba(0,0,0,.3);
  border-top: 1px solid rgba(255,255,255,.08);
}

/* ═════ ЧЕК-ЛИСТ ═════ */
.checklist {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 10px 32px;
  margin: 0 0 32px;
}
.checklist li {
  position: relative;
  padding: 10px 0 10px 32px;
  color: var(--text-on-dark);
  line-height: 1.55;
  font-size: .96rem;
}
.checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ═════ НАВИГАЦИЯ — КАРТОЧКИ ВНИЗУ ═════ */
.nav-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin: 32px 0 0;
}
.nav-card {
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: all .3s;
  position: relative;
  overflow: hidden;
}
.nav-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 20px 50px rgba(0,212,255,.15);
  color: var(--text);
}
.nav-card-num {
  font-size: .82rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .1em;
  margin-bottom: 14px;
}
.nav-card h3 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.3;
}
  
  /* ═══════════════════════════════════════════════════════════
   ЯКОРНАЯ НАВИГАЦИЯ — компенсация sticky-шапки
   ═══════════════════════════════════════════════════════════ */
section[id],
footer[id] {
  scroll-margin-top: 100px;
}

/* ═══════════════════════════════════════════════════════════
   СЕКЦИЯ «ПУБЛИКАЦИИ И ВИДЕО»
   ═══════════════════════════════════════════════════════════ */
.media-section { background: var(--bg); }

.media-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.media-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 40px 36px;
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 20px;
  transition: all .3s;
  overflow: hidden;
  color: var(--text);
  text-decoration: none;
}
.media-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.media-card:hover::after { transform: scaleX(1); }
.media-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0,212,255,.18);
  color: var(--text);
}

.media-icon {
  width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem;
  background: linear-gradient(135deg, #dbeafe, #cffafe);
  border-radius: 18px;
  margin-bottom: 22px;
}
.media-card h3 {
  font-size: 1.25rem;
  color: var(--primary);
  margin-bottom: 12px;
}
.media-card p {
  font-size: .95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex: 1;
}
.media-arrow {
  color: var(--accent);
  font-weight: 600;
  font-size: .95rem;
  transition: transform .3s;
  display: inline-block;
}
.media-card:hover .media-arrow { transform: translateX(6px); }

/* ═══════════════════════════════════════════════════════════
   КНОПКА «НАВЕРХ»
   ═══════════════════════════════════════════════════════════ */
   /*
.scroll-top {
  position: fixed;
  bottom: 90px;
  right: 24px;
  z-index: 49;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--dark);
  color: var(--accent);
  border: 1px solid rgba(0,212,255,.3);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 40px rgba(0,0,0,.25), 0 0 30px rgba(0,212,255,.15);
  transition: all .3s;
  padding: 0;
}
.scroll-top:hover {
  background: var(--dark-2);
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 16px 50px rgba(0,212,255,.4);
  color: #fff;
}
.scroll-top svg { display: block; }
*/
.scroll-top {
  position: fixed;
  bottom: 90px;
  right: 24px;
  z-index: 49;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);                    /* ← было var(--dark), стало cyan */
  color: var(--dark);                            /* ← тёмная стрелка */
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 30px rgba(0,212,255,.45), 0 4px 12px rgba(0,0,0,.15);
  transition: all .3s;
  padding: 0;
  opacity: 1;
  visibility: visible;
    
}
.scroll-top:hover {
  background: #22e0ff;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 12px 40px rgba(0,212,255,.6), 0 6px 20px rgba(0,0,0,.2);
  color: var(--dark);
}
.scroll-top svg { display: block; }

/* ═══════════════════════════════════════════════════════════
   CTA — светлая версия (для страниц приборов и устройств)
   ═══════════════════════════════════════════════════════════ */
.cta-section--light {
  background:
    radial-gradient(ellipse at 100% 0%, rgba(0,212,255,.12), transparent 50%),
    linear-gradient(180deg, #f4f7fb 0%, #ffffff 100%);
  color: var(--text);
  border-top: 1px solid var(--border);
}
.cta-section--light::after {
  background: radial-gradient(circle, rgba(0,212,255,.1), transparent 70%);
  opacity: .6;
}
.cta-section--light h2 {
  color: var(--primary);
}
.cta-section--light p {
  color: var(--text-muted);
}

/* Кнопки в светлом CTA */
.cta-section--light .btn-accent {
  background: var(--primary);
  color: #fff !important;
  box-shadow: 0 8px 24px rgba(26,58,107,.25);
}
.cta-section--light .btn-accent:hover {
  background: var(--dark);
  box-shadow: 0 12px 32px rgba(26,58,107,.35);
}
.cta-section--light .btn-ghost-light {
  background: transparent;
  color: var(--primary) !important;
  border-color: var(--border);
}
.cta-section--light .btn-ghost-light:hover {
  border-color: var(--primary);
  background: #fff;
  color: var(--primary) !important;
}

/* ═══════════════════════════════════════════════════════════
   АДАПТИВ
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 720px) {
  .media-grid { grid-template-columns: 1fr; }
  .media-card { padding: 32px 24px; }
  .media-icon { width: 56px; height: 56px; font-size: 1.5rem; }
}

@media (max-width: 520px) {
  .scroll-top {
    bottom: 76px;
    right: 16px;
    width: 44px;
    height: 44px;
  }
}

/* ═══════════════════════════════════════════════════════════
   QR-код в футере
   ═══════════════════════════════════════════════════════════ */
.footer-qr {
  width: 120px;
  height: 120px;
  object-fit: contain;
  display: block;
  margin-top: 8px;
  border-radius: 8px;
  transition: transform .3s;
}

.footer-qr:hover {
  transform: scale(1.06);
}

/* Мобильные */
@media (max-width: 520px) {
  .footer-qr {
    width: 88px;
    height: 88px;
  }
}

/* ═══════════════════════════════════════════════════════════
   Универсальный TOOLTIP
   Работает для любого элемента с data-tooltip="..."
   ═══════════════════════════════════════════════════════════ */
[data-tooltip] {
  position: relative;
  cursor: pointer;
}

/* Плашка с текстом */
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 12px);            /* появляется СВЕРХУ */
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  padding: 8px 14px;
  background: var(--dark);
  color: #fff;
  font-size: .82rem;
  line-height: 1.3;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 8px;
  border: 1px solid rgba(0,212,255,.3);
  box-shadow: 0 8px 24px rgba(0,0,0,.35), 0 0 20px rgba(0,212,255,.15);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: all .25s ease;
  z-index: 10;
}

/* Стрелочка снизу плашки — указывает на логотип */
[data-tooltip]::before {
  content: '';
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  border: 7px solid transparent;
  border-top-color: var(--dark);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: all .25s ease;
  z-index: 10;
}

/* Показываем при наведении */
[data-tooltip]:hover::after,
[data-tooltip]:hover::before {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Чек-лист — многострочный вариант (для публикаций) */
.checklist li {
  padding-top: 14px;
  padding-bottom: 14px;
  line-height: 1.6;
}
.checklist li strong {
  font-weight: 700;
  color: #fff;
}
.checklist li a {
  display: inline-block;
  margin-top: 6px;
  font-weight: 600;
  transition: color .2s;
}
.checklist li a:hover {
  color: #fff !important;
  text-decoration: underline;
}

/* ═══════════════════════════════════════════════════════════
   УЧЕБНЫЕ ПОСОБИЯ — карточки с обложками
   ═══════════════════════════════════════════════════════════ */
.manual-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.manual-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s;
  color: var(--text);
  text-decoration: none;
  position: relative;
}
.manual-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.manual-card:hover::after { transform: scaleX(1); }
.manual-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 20px 50px rgba(0,212,255,.18);
  color: var(--text);
}

.manual-cover {
  aspect-ratio: 3/4;
  overflow: hidden;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
}
.manual-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.manual-card:hover .manual-cover img { transform: scale(1.04); }

.manual-body {
  padding: 24px 24px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.manual-num {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.manual-body h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 12px;
  line-height: 1.3;
}
.manual-body p {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}
.manual-body strong { color: var(--text); font-weight: 600; }
.manual-arrow {
  color: var(--accent);
  font-weight: 600;
  font-size: .9rem;
  transition: transform .3s;
  display: inline-block;
  margin-top: auto;
}
.manual-card:hover .manual-arrow { transform: translateX(6px); }

/* ═══════════════════════════════════════════════════════════
   ПРАВА НА ПО — свидетельства в ряд
   ═══════════════════════════════════════════════════════════ */


/* ═══════════════════════════════════════════════════════════
   ПУБЛИКАЦИИ — список статей
   ═══════════════════════════════════════════════════════════ */
   
   /* ═══════════════════════════════════════════════════════════
   СЕТКА ПУБЛИКАЦИЙ — карточки-квадраты
   ═══════════════════════════════════════════════════════════ */
.pub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.pub-card {
  display: flex;
  flex-direction: column;
  padding: 24px 24px 22px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  transition: all .3s;
  position: relative;
  overflow: hidden;
  min-height: 220px;
}
.pub-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.pub-card:hover::after { transform: scaleX(1); }
.pub-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 20px 50px rgba(0,212,255,.18);
  color: var(--text);
}

.pub-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.pub-year {
  color: var(--accent);
  font-size: 1rem;
}
.pub-type {
  color: var(--text-muted);
  padding: 3px 10px;
  background: #f1f5f9;
  border-radius: 100px;
  font-size: .68rem;
}

.pub-card .pub-title {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 12px;
  line-height: 1.4;
  font-weight: 700;
  flex: 1;
}

.pub-journal {
  font-size: .85rem;
  color: var(--text-muted);
  margin: 0 0 16px;
  line-height: 1.4;
}

.pub-arrow {
  color: var(--accent);
  font-weight: 600;
  font-size: .88rem;
  transition: transform .3s;
  display: inline-block;
  margin-top: auto;
}
.pub-card:hover .pub-arrow { transform: translateX(6px); }

/* ═══════════════════════════════════════════════════════════
   СЕТКА СВИДЕТЕЛЬСТВ О РЕГИСТРАЦИИ ПО
   ═══════════════════════════════════════════════════════════ 
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.cert-card {
  display: flex;
  flex-direction: column;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(0,212,255,.2);
  border-radius: var(--radius);
  overflow: hidden;
  color: var(--text-on-dark);
  text-decoration: none;
  transition: all .3s;
  position: relative;
}
.cert-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0,212,255,.15), transparent 60%);
  opacity: 0;
  transition: opacity .4s;
  pointer-events: none;
  z-index: 1;
}
.cert-card:hover::before { opacity: 1; }
.cert-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 20px 60px rgba(0,212,255,.25);
  color: var(--text-on-dark);
}

.cert-img {
  aspect-ratio: 3/4;
  overflow: hidden;
  background: #fff;
  position: relative;
  z-index: 2;
}
.cert-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s;
}
.cert-card:hover .cert-img img { transform: scale(1.04); }

.cert-body {
  padding: 18px 20px 20px;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.cert-num {
  font-size: .75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.cert-body h4 {
  font-size: .95rem;
  color: #fff;
  margin-bottom: 6px;
  line-height: 1.3;
  font-weight: 700;
}
.cert-body p {
  font-size: .82rem;
  color: var(--text-muted-dark);
  margin: 0;
  line-height: 1.5;
}
*/
/* ═══════════════════════════════════════════════════════════
   СВИДЕТЕЛЬСТВА О РЕГИСТРАЦИИ ПО — карточки-документы (PDF)
   ═══════════════════════════════════════════════════════════ */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.cert-card {
  display: flex;
  flex-direction: column;
  padding: 24px 22px 22px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(0,212,255,.2);
  border-radius: var(--radius);
  color: var(--text-on-dark);
  text-decoration: none;
  transition: all .3s;
  position: relative;
  overflow: hidden;
  min-height: 180px;
}
.cert-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(0,212,255,.15), transparent 60%);
  opacity: 0;
  transition: opacity .4s;
  pointer-events: none;
  z-index: 1;
}
.cert-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
  z-index: 2;
}
.cert-card:hover::before { opacity: 1; }
.cert-card:hover::after { transform: scaleX(1); }
.cert-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 20px 60px rgba(0,212,255,.25);
  color: var(--text-on-dark);
}

/* Иконка PDF */
.cert-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(0,212,255,.15), rgba(37,99,235,.2));
  border: 1px solid rgba(0,212,255,.3);
  border-radius: 14px;
  margin-bottom: 18px;
  position: relative;
  z-index: 2;
}

.cert-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  position: relative;
  z-index: 2;
}
.cert-num {
  font-size: .75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.cert-body h4 {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.3;
  font-weight: 700;
}
.cert-body p {
  font-size: .85rem;
  color: var(--text-muted-dark);
  margin: 0 0 16px;
  line-height: 1.5;
}
.cert-arrow {
  color: var(--accent);
  font-weight: 600;
  font-size: .88rem;
  transition: transform .3s;
  display: inline-block;
  margin-top: auto;
}
.cert-card:hover .cert-arrow { transform: translateX(6px); }

/* Адаптив */
@media (max-width: 520px) {
  .cert-grid {
    grid-template-columns: 1fr;
  }
}
/* ═══════════════════════════════════════════════════════════
   АДАПТИВ СЕТОК
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 720px) {
  .pub-grid,
  .cert-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
  }
  .pub-card { padding: 20px; min-height: 180px; }
  .cert-body { padding: 14px 16px 16px; }
}

@media (max-width: 520px) {
  .pub-grid,
  .cert-grid {
    grid-template-columns: 1fr;
  }
}