:root {
  --bg: #f6fbff;
  --bg-soft: #eef7ff;
  --white: #ffffff;
  --text: #15314b;
  --muted: #5f7891;
  --line: rgba(21, 49, 75, 0.1);
  --primary: #1677ff;
  --primary-soft: #dff0ff;
  --cyan: #0ea5e9;
  --shadow: 0 18px 50px rgba(33, 91, 145, 0.12);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(14,165,233,0.12), transparent 30%),
    radial-gradient(circle at left center, rgba(22,119,255,0.08), transparent 28%),
    linear-gradient(180deg, #f8fcff 0%, #ffffff 45%, #f4faff 100%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(255,255,255,0.8);
  border-bottom: 1px solid rgba(255,255,255,0.7);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  gap: 20px;
}
.brand { display: flex; flex-direction: column; }
.brand-title { font-size: 1.45rem; font-weight: 800; letter-spacing: -0.03em; color: var(--primary); }
.brand-subtitle { font-size: 0.92rem; color: var(--muted); }
.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav a {
  font-weight: 600;
  color: var(--text);
  transition: color .2s ease;
}
.nav a:hover { color: var(--primary); }
.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 14px;
  padding: 10px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  margin: 6px 0;
  border-radius: 999px;
}

.hero { padding: 72px 0 42px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  align-items: center;
  gap: 42px;
}
.badge {
  display: inline-flex;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(22,119,255,0.12);
  color: var(--primary);
  font-size: 0.92rem;
  font-weight: 700;
  box-shadow: 0 8px 25px rgba(22,119,255,0.08);
}
.hero h1 {
  margin: 18px 0 20px;
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
}
.hero h1 span { color: var(--primary); }
.hero p {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 700px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 16px;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #3ea2ff);
  color: white;
  box-shadow: 0 18px 40px rgba(22,119,255,0.22);
}
.btn-secondary {
  background: rgba(255,255,255,0.86);
  border: 1px solid var(--line);
  color: var(--text);
}

.hero-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.info-card,
.summary-card,
.service-card,
.feature-panel,
.channels-box,
.document-card,
.contact-card,
.contact-panel {
  background: rgba(255,255,255,0.88);
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}
.info-card {
  padding: 26px;
}
.info-card h2 {
  margin: 0 0 12px;
  font-size: 2rem;
  letter-spacing: -0.04em;
}
.card-label {
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: .18em;
  font-weight: 800;
  margin-bottom: 12px;
}
.accent-blue .card-label { color: var(--primary); }
.accent-cyan .card-label { color: var(--cyan); }
.price-box {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--primary-soft);
}
.price-box span {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
}
.price-box strong {
  display: block;
  font-size: 1.7rem;
  margin-top: 4px;
}
.summary-card {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 20px;
}
.summary-card div {
  background: #f7fbff;
  border: 1px solid rgba(22,119,255,0.08);
  border-radius: 18px;
  padding: 16px;
}
.summary-card span,
.contact-card span { display: block; color: var(--muted); font-size: 0.9rem; }
.summary-card strong,
.contact-card strong { display: block; margin-top: 8px; font-size: 1.02rem; }

.section { padding: 54px 0; }
.alt-section { background: linear-gradient(180deg, rgba(223,240,255,0.4), rgba(255,255,255,0)); }
.section-heading {
  max-width: 720px;
  margin: 0 auto 26px;
  text-align: center;
}
.left-align { margin-left: 0; text-align: left; }
.section-kicker {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.section-heading h2 {
  margin: 0 0 12px;
  font-size: clamp(1.9rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}
.section-heading p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.service-grid,
.tv-layout,
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.service-card,
.feature-panel,
.channels-box,
.contact-panel { padding: 28px; }
.service-card h3,
.feature-panel h3,
.channels-box h3,
.contact-panel h3,
.document-card h3 {
  margin-top: 0;
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}
.service-price {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--primary);
}
.service-card p,
.feature-item p,
.channels-box p,
.contact-panel p,
.document-card p {
  color: var(--muted);
  line-height: 1.75;
}
.service-card ul,
.contact-panel ul {
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--text);
  line-height: 1.8;
}
.feature-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}
.feature-item {
  padding: 18px;
  border-radius: 18px;
  background: #f8fbff;
  border: 1px solid rgba(22,119,255,0.08);
}
.featured {
  background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(225,243,255,0.65));
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 18px;
}
.tag-list span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: #f1f8ff;
  border: 1px solid rgba(22,119,255,0.1);
  font-weight: 600;
  color: var(--text);
}
.documents-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.document-card {
  padding: 24px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.document-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 46px rgba(33, 91, 145, 0.18);
}
.contact-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.contact-card { padding: 22px; }
.contact-section { padding-bottom: 80px; }
.site-footer {
  border-top: 1px solid rgba(21,49,75,0.08);
  background: rgba(255,255,255,0.8);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .service-grid,
  .tv-layout,
  .contact-grid,
  .documents-grid {
    grid-template-columns: 1fr;
  }
  .hero-cards,
  .summary-card,
  .contact-cards { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .menu-toggle { display: inline-block; }
  .nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 10px;
    background: rgba(255,255,255,0.95);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
  }
  .nav.open { display: flex; }
  .nav a {
    width: 100%;
    padding: 14px 12px;
    border-radius: 12px;
  }
  .nav a:hover { background: #f6fbff; }
  .hero { padding-top: 40px; }
  .footer-inner { flex-direction: column; }
}

.documents-grid-extended {
  grid-template-columns: repeat(2, 1fr);
}
.card-wide {
  grid-column: 1 / -1;
}
.contact-card a {
  color: inherit;
}
.doc-body {
  padding: 0;
}
.doc-page {
  min-height: 100vh;
  padding: 40px 0 70px;
}
.doc-shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
}
.doc-header {
  margin-bottom: 24px;
}
.doc-header .back-link {
  display: inline-flex;
  margin-bottom: 20px;
  font-weight: 700;
  color: var(--primary);
}
.doc-article {
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 30px;
}
.doc-article h1 {
  margin-top: 0;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  letter-spacing: -0.04em;
}
.doc-article h2 {
  margin-top: 28px;
  font-size: 1.3rem;
}
.doc-article p,
.doc-article li {
  color: var(--muted);
  line-height: 1.85;
}
.doc-article ul {
  padding-left: 20px;
}
.note-box {
  padding: 18px 20px;
  border-radius: 18px;
  background: #f4faff;
  border: 1px solid rgba(22,119,255,0.1);
  color: var(--text);
}
@media (max-width: 980px) {
  .documents-grid-extended {
    grid-template-columns: 1fr;
  }
}


/* Documents pages */
.docs-body {
  background:
    radial-gradient(circle at top right, rgba(14,165,233,0.10), transparent 30%),
    linear-gradient(180deg, #f8fcff 0%, #ffffff 42%, #f4faff 100%);
}
.doc-page { padding-bottom: 56px; }
.doc-hero {
  padding: 58px 0 24px;
}
.doc-hero h1 {
  margin: 12px 0 12px;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}
.doc-hero p {
  max-width: 760px;
  color: var(--muted);
  line-height: 1.75;
  font-size: 1.04rem;
}
.back-link {
  display: inline-flex;
  margin-bottom: 18px;
  font-weight: 700;
  color: var(--primary);
}
.doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}
.doc-content-section {
  padding: 14px 0 34px;
}
.doc-layout {
  display: block;
}
.doc-article {
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 34px 26px;
}
.doc-article h2 {
  margin: 18px 0 12px;
  font-size: 1.55rem;
  letter-spacing: -0.03em;
}
.doc-article h3 {
  margin: 22px 0 12px;
  font-size: 1.1rem;
  color: var(--primary);
}
.doc-article p {
  margin: 0 0 14px;
  line-height: 1.78;
  color: var(--text);
}
.doc-list {
  margin: 0 0 16px 0;
  padding-left: 22px;
}
.doc-list li {
  margin-bottom: 10px;
  line-height: 1.75;
}
.doc-toc-card {
  margin-bottom: 26px;
  padding: 20px 22px;
  border-radius: 22px;
  background: var(--bg-soft);
  border: 1px solid rgba(22,119,255,0.10);
}
.doc-subsection {
  padding-top: 10px;
  margin-top: 10px;
}
.documents-grid-extended .document-card::after {
  content: "Отвори →";
  display: inline-block;
  margin-top: 16px;
  font-weight: 700;
  color: var(--primary);
}

@media (max-width: 820px) {
  .docs-nav { display: none; }
  .doc-article { padding: 24px 18px; border-radius: 22px; }
  .doc-hero { padding-top: 36px; }
}