/* Синергия — инженерный корпоративный стиль */
:root {
  --navy: #0b1f3a;
  --navy-light: #132d52;
  --white: #ffffff;
  --gray-50: #f4f7fb;
  --gray-100: #e8edf4;
  --gray-300: #b8c4d4;
  --gray-600: #5a6b82;
  --gray-800: #2d3a4d;
  --cyan: #1bb8c4;
  --cyan-dark: #149aa5;
  --cyan-glow: rgba(27, 184, 196, 0.25);
  --shadow: 0 12px 40px rgba(11, 31, 58, 0.12);
  --radius: 14px;
  --transition: 0.28s ease;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan-dark); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--cyan); }

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Top bar */
.topbar {
  background: var(--navy);
  color: var(--gray-300);
  font-size: 0.875rem;
  padding: 0.5rem 0;
}
.topbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}
.topbar a { color: var(--white); font-weight: 600; }
.topbar__badge {
  background: var(--cyan);
  color: var(--navy);
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-100);
  box-shadow: 0 2px 20px rgba(11, 31, 58, 0.06);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--navy);
  font-weight: 700;
}
.logo img { width: 56px; height: 56px; object-fit: contain; flex-shrink: 0; }
.logo__text { display: flex; flex-direction: column; line-height: 1.2; }
.logo__text small { font-size: 0.7rem; font-weight: 500; color: var(--gray-600); letter-spacing: 0.02em; }

.site-nav { display: flex; align-items: center; gap: 1.25rem; }
.site-nav a {
  color: var(--gray-800);
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
}
.site-nav a:hover,
.site-nav a.is-active { color: var(--cyan-dark); }

.header-cta { display: flex; align-items: center; gap: 0.75rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  transition: var(--transition);
}
.nav-toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}
.btn--primary {
  background: var(--cyan);
  color: var(--navy);
  box-shadow: 0 8px 24px var(--cyan-glow);
}
.btn--primary:hover { background: var(--cyan-dark); color: var(--white); transform: translateY(-1px); }
.btn--outline {
  background: transparent;
  border-color: var(--cyan);
  color: var(--cyan-dark);
}
.btn--outline:hover { background: var(--cyan); color: var(--navy); }
.btn--dark {
  background: var(--navy);
  color: var(--white);
}
.btn--dark:hover { background: var(--navy-light); color: var(--white); }
.btn--sm { padding: 0.55rem 1rem; font-size: 0.85rem; }

/* Hero */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 55%, #1a4a5c 100%);
  color: var(--white);
  padding: 4.5rem 0 5rem;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(27, 184, 196, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 10% 80%, rgba(255, 120, 50, 0.08) 0%, transparent 40%);
  pointer-events: none;
}
.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
}
.hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.hero__lead {
  font-size: 1.1rem;
  color: var(--gray-300);
  margin-bottom: 2rem;
  max-width: 36rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.hero__card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(8px);
}
.hero__card img {
  display: block;
  width: 160px;
  height: auto;
  margin: 0 auto 1rem;
  object-fit: contain;
}
.hero__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}
.hero__stat {
  text-align: center;
  padding: 0.75rem;
  background: rgba(255,255,255,0.06);
  border-radius: 10px;
}
.hero__stat strong { display: block; font-size: 1.4rem; color: var(--cyan); }

/* Sections */
.section { padding: 4.5rem 0; }
.section--gray { background: var(--gray-50); }
.section--dark { background: var(--navy); color: var(--white); }
.section__head { text-align: center; max-width: 720px; margin: 0 auto 2.5rem; }
.section__head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--navy);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}
.section--dark .section__head h2 { color: var(--white); }
.section__head p { color: var(--gray-600); margin: 0; }
.section--dark .section__head p { color: var(--gray-300); }

/* Cards grid */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--cyan);
}
.card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--cyan-glow), rgba(27,184,196,0.08));
  display: grid;
  place-items: center;
  font-size: 1.4rem;
}
.card h3 { margin: 0; font-size: 1.05rem; color: var(--navy); }
.card p { margin: 0; font-size: 0.9rem; color: var(--gray-600); flex-grow: 1; }
.card__link { font-weight: 600; font-size: 0.9rem; margin-top: auto; }

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.feature {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 1rem;
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--gray-100);
}
.feature__icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--cyan);
  color: var(--navy);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.85rem;
}
.feature h3 { margin: 0 0 0.25rem; font-size: 0.95rem; color: var(--navy); }
.feature p { margin: 0; font-size: 0.85rem; color: var(--gray-600); }

/* Table */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--gray-100); }
table { width: 100%; border-collapse: collapse; background: var(--white); }
th, td { padding: 1rem 1.25rem; text-align: left; border-bottom: 1px solid var(--gray-100); }
th { background: var(--navy); color: var(--white); font-weight: 600; font-size: 0.9rem; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--gray-50); }
.price { font-weight: 700; color: var(--cyan-dark); white-space: nowrap; }

/* Tags / districts */
.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; }
.tag {
  padding: 0.45rem 0.9rem;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--gray-800);
  transition: var(--transition);
}
.tag:hover { border-color: var(--cyan); color: var(--cyan-dark); }

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  counter-reset: step;
}
.step {
  text-align: center;
  padding: 1.25rem 0.75rem;
  position: relative;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin: 0 auto 0.75rem;
  border-radius: 50%;
  background: var(--cyan);
  color: var(--navy);
  font-weight: 700;
}
.step h3 { margin: 0; font-size: 0.9rem; color: var(--navy); }

/* Portfolio */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}
.portfolio-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--gray-100);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}
.portfolio-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.portfolio-card__img {
  height: 180px;
  background: linear-gradient(135deg, var(--navy-light), var(--cyan-dark));
  display: grid;
  place-items: center;
  color: rgba(255,255,255,0.5);
  font-size: 2.5rem;
}
.portfolio-card__body { padding: 1.25rem; background: var(--white); }
.portfolio-card h3 { margin: 0 0 0.5rem; font-size: 1rem; color: var(--navy); }
.portfolio-card p { margin: 0; font-size: 0.85rem; color: var(--gray-600); }

/* FAQ */
.faq { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--gray-100); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 0;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy);
  text-align: left;
  font-family: inherit;
}
.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--cyan);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.is-open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.is-open .faq-answer { max-height: 300px; }
.faq-answer p { margin: 0 0 1.15rem; color: var(--gray-600); font-size: 0.95rem; }

/* Page hero (inner) */
.page-hero {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  color: var(--white);
  padding: 3rem 0;
}
.page-hero h1 { margin: 0 0 0.75rem; font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
.page-hero p { margin: 0; color: var(--gray-300); max-width: 640px; }
.breadcrumbs { font-size: 0.85rem; margin-bottom: 1rem; color: var(--gray-300); }
.breadcrumbs a { color: var(--cyan); }

/* Content */
.content { padding: 3rem 0 4rem; }
.content h2 { color: var(--navy); margin: 2rem 0 1rem; font-size: 1.35rem; }
.content h2:first-child { margin-top: 0; }
.content p { color: var(--gray-600); }
.content ul { color: var(--gray-600); padding-left: 1.25rem; }
.content li { margin-bottom: 0.5rem; }
.content-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2.5rem;
  align-items: start;
}

/* Sidebar CTA */
.sidebar-cta {
  position: sticky;
  top: 100px;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.sidebar-cta h3 { margin: 0 0 0.75rem; color: var(--navy); font-size: 1.1rem; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.35rem; color: var(--gray-800); }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-100);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: var(--white);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-glow);
}
.form-status {
  display: none;
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: #e6f9f7;
  border-radius: 8px;
  color: var(--cyan-dark);
  font-size: 0.9rem;
}
.form-status.is-visible { display: block; }

/* NAP */
.nap {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-100);
}
.nap dt { font-weight: 700; color: var(--navy); margin-bottom: 0.25rem; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; }
.nap dd { margin: 0; color: var(--gray-600); }

/* CTA band */
.cta-band {
  background: linear-gradient(135deg, var(--navy), #1a4a5c);
  color: var(--white);
  padding: 3rem 0;
  text-align: center;
}
.cta-band h2 { margin: 0 0 0.75rem; font-size: 1.6rem; }
.cta-band p { margin: 0 0 1.5rem; color: var(--gray-300); }
.cta-band .btn { margin: 0 0.35rem; }

/* Footer */
.site-footer {
  background: var(--navy);
  color: var(--gray-300);
  padding: 3rem 0 1.5rem;
  font-size: 0.9rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer__grid h4 { color: var(--white); margin: 0 0 1rem; font-size: 0.95rem; }
.footer__grid ul { list-style: none; padding: 0; margin: 0; }
.footer__grid li { margin-bottom: 0.45rem; }
.footer__grid a { color: var(--gray-300); }
.footer__grid a:hover { color: var(--cyan); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.8rem;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .content-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .site-nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(320px, 85vw);
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 1.5rem 2rem;
    gap: 0;
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: -8px 0 30px rgba(0,0,0,0.1);
    overflow-y: auto;
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav a { padding: 0.85rem 0; width: 100%; border-bottom: 1px solid var(--gray-100); }
  .nav-toggle { display: flex; }
  .header-cta .btn--outline { display: none; }
}

.btn--max {
  background: #6c5ce7;
  color: #fff;
  border-color: #6c5ce7;
}
.btn--max:hover { background: #5a4bd6; color: #fff; }
.btn--outline.btn--max { background: transparent; color: #6c5ce7; border-color: #6c5ce7; }
.btn--outline.btn--max:hover { background: rgba(108, 92, 231, 0.08); color: #5a4bd6; }

.related-links { padding-left: 1.25rem; color: var(--gray-600); }
.related-links li { margin-bottom: 0.4rem; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.portfolio-card h3 a { color: var(--navy); }
.portfolio-card h3 a:hover { color: var(--cyan-dark); }

/* Плавающие CTA */
.floating-cta {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.floating-cta__btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: transform var(--transition);
}
.floating-cta__btn:hover { transform: scale(1.08); }
.floating-cta__btn--phone { background: var(--cyan); color: var(--navy); }
.floating-cta__btn--max { background: #6c5ce7; color: #fff; font-weight: 700; font-size: 0.95rem; }
.floating-cta__btn--form { background: var(--navy); color: #fff; }

@media (max-width: 600px) {
  .section { padding: 3rem 0; }
  .footer__grid { grid-template-columns: 1fr; }
  .hero { padding: 3rem 0; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .floating-cta { right: 0.75rem; bottom: 0.75rem; }
}

/* Блог и видеоцентр */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.blog-grid--compact { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.blog-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.blog-card__img-wrap {
  display: block;
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--gray-100);
}
.blog-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.blog-card:hover .blog-card__img-wrap img { transform: scale(1.05); }
.blog-card__img-wrap--video .play-badge {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 2.5rem;
  color: #fff;
  background: rgba(11, 31, 58, 0.35);
  pointer-events: none;
}
.blog-card__body { padding: 1.25rem; flex: 1; display: flex; flex-direction: column; }
.blog-card__date { font-size: 0.8rem; color: var(--gray-500); margin-bottom: 0.35rem; }
.blog-card__title { margin: 0 0 0.5rem; font-size: 1.1rem; line-height: 1.35; }
.blog-card__title a { color: var(--navy); text-decoration: none; }
.blog-card__title a:hover { color: var(--cyan-dark); }
.blog-card__excerpt {
  color: var(--gray-600);
  font-size: 0.9rem;
  margin: 0 0 1rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-empty { color: var(--gray-500); text-align: center; padding: 2rem 0; }

.article-body h2 { margin-top: 2rem; color: var(--navy); }
.article-body h3 { margin-top: 1.5rem; color: var(--navy); }
.article-body img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 1rem 0; }
.article-body blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--cyan);
  background: var(--gray-50);
  color: var(--gray-700);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}
.article-body th,
.article-body td {
  border: 1px solid var(--gray-200);
  padding: 0.6rem 0.75rem;
  text-align: left;
}
.article-body th { background: var(--gray-50); font-weight: 600; }

.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
}
.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.video-player {
  width: 100%;
  max-height: 70vh;
  border-radius: var(--radius);
  background: #000;
}