:root {
  --primary-dark: #0A2E8A;
  --primary: #1565D8;
  --primary-light: #2196F3;
  --accent: #33C8FF;
  --accent-soft: #D9F5FF;
  --background: #F6F9FC;
  --surface: #FFFFFF;
  --surface-soft: #EEF5FF;
  --surface-dark: #07152E;
  --text: #25272C;
  --text-muted: #6B7280;
  --border: #E5EAF3;
  --success: #16A34A;
  --warning: #F59E0B;
  --danger: #DC2626;
  --shadow-sm: 0 12px 34px rgba(10, 46, 138, .09);
  --shadow-md: 0 22px 58px rgba(10, 46, 138, .15);
  --shadow-lg: 0 36px 100px rgba(5, 31, 88, .22);
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 34px;
  --container: 1180px;
  --header-height: 78px;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 20px); }
body {
  min-width: 320px;
  color: var(--text);
  background: var(--background);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
body.menu-open, body.modal-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
ul { list-style: none; }
::selection { color: #fff; background: var(--primary); }

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.section { padding: 104px 0; }
.section-soft { background: var(--surface-soft); }

#tariffs {
  background:
    linear-gradient(rgba(247, 250, 255, .34), rgba(247, 250, 255, .34)),
    url("../images/tariffs-network-background.png") center bottom / cover no-repeat,
    var(--surface-soft);
}

#coverage {
  background:
    linear-gradient(rgba(247, 250, 255, .18), rgba(247, 250, 255, .18)),
    url("../images/coverage-section-background.png") center / cover no-repeat,
    var(--surface-soft);
}

#faq {
  background:
    linear-gradient(rgba(247, 250, 255, .18), rgba(247, 250, 255, .18)),
    url("../images/faq-signal-background.png") center / cover no-repeat,
    var(--surface-soft);
}

.section-head {
  max-width: 760px;
  margin-bottom: 46px;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 15px;
  color: var(--primary);
  font-size: .8rem;
  font-weight: 900;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.eyebrow-accent { color: var(--accent); }

.eyebrow::before {
  content: "";
  width: 29px;
  height: 3px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.section-head.center .eyebrow::after {
  content: "";
  width: 29px;
  height: 3px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
}

h1, h2, h3 { line-height: 1.1; letter-spacing: -.03em; }
h2 { margin-bottom: 16px; font-size: clamp(2.1rem, 4.3vw, 3.45rem); }
.section-head p { color: var(--text-muted); font-size: 1.08rem; }

.button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 24px;
  border: 0;
  border-radius: 15px;
  font-weight: 850;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
  isolation: isolate;
}

.button:hover { transform: translateY(-2px); }
.button:focus-visible, .nav-link:focus-visible, .menu-toggle:focus-visible, .floating-contact:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid rgba(51, 200, 255, .5);
  outline-offset: 3px;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  box-shadow: 0 14px 30px rgba(21, 101, 216, .28);
}

.button-primary:hover { box-shadow: 0 20px 42px rgba(21, 101, 216, .36); }

.button-light {
  color: var(--primary-dark);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.button-outline {
  color: var(--primary);
  border: 2px solid rgba(21, 101, 216, .22);
  background: transparent;
}

.button-hero-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, .35);
}

.button-arrow::after {
  content: "→";
  font-size: 1.15em;
  transition: transform .2s ease;
}
.button-arrow:hover::after { transform: translateX(4px); }

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, .9);
  border-color: var(--border);
  box-shadow: 0 10px 35px rgba(10, 46, 138, .07);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-size: 1.24rem;
  font-weight: 900;
  white-space: nowrap;
}

.brand-mark {
  position: relative;
  width: 47px;
  height: 47px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 17px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary-dark), var(--accent));
  box-shadow: 0 12px 27px rgba(51, 200, 255, .24);
}

.brand-mark::after {
  content: "";
  position: absolute;
  width: 58px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.65);
  border-radius: 50%;
  transform: rotate(-27deg);
}

.brand-mark span { position: relative; z-index: 2; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  position: relative;
  padding: 10px 0;
  color: rgba(255, 255, 255, .84);
  font-size: .93rem;
  font-weight: 750;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 4px;
  height: 2px;
  border-radius: 99px;
  background: var(--accent);
  transition: right .22s ease;
}

.nav-link:hover { color: #fff; }
.nav-link:hover::after { right: 0; }

.site-header.scrolled .brand,
.site-header.scrolled .nav-link { color: var(--text); }
.site-header.scrolled .nav-link:hover { color: var(--primary); }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.header-contacts {
  display: flex;
  align-items: center;
  gap: 15px;
  color: rgba(255,255,255,.9);
  font-size: .82rem;
  line-height: 1.25;
  white-space: nowrap;
}

.header-contact-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: color .2s ease;
}

.header-contact-link:hover { color: var(--accent); }

.header-contact-icon {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  flex: 0 0 30px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px;
  color: var(--accent);
  background: rgba(255,255,255,.08);
}

.header-contact-text {
  display: grid;
  gap: 1px;
}

.header-contact-text small {
  color: rgba(255,255,255,.6);
  font-size: .68rem;
  font-weight: 650;
}

.header-contact-text strong {
  font-size: .82rem;
  font-weight: 800;
}

.site-header.scrolled .header-contacts { color: var(--text); }
.site-header.scrolled .header-contact-text small { color: var(--text-muted); }
.site-header.scrolled .header-contact-icon {
  border-color: var(--border);
  background: var(--surface-soft);
}

.nav-button { min-height: 44px; padding-inline: 18px; font-size: .91rem; }

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 13px;
  color: #fff;
  background: rgba(255,255,255,.1);
  font-size: 1.45rem;
}

.site-header.scrolled .menu-toggle {
  color: var(--text);
  border-color: var(--border);
  background: var(--surface-soft);
}

.menu-backdrop {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: 90;
  visibility: hidden;
  opacity: 0;
  background: rgba(7, 21, 46, .56);
  backdrop-filter: blur(5px);
  transition: opacity .25s ease, visibility .25s ease;
}
.menu-backdrop.open { visibility: visible; opacity: 1; }

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center;
  padding: 142px 0 88px;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 83% 12%, rgba(51, 200, 255, .26), transparent 28%),
    radial-gradient(circle at 8% 92%, rgba(33, 150, 243, .27), transparent 29%),
    linear-gradient(90deg, rgba(6, 19, 39, .96) 0%, rgba(6, 19, 39, .8) 48%, rgba(6, 19, 39, .42) 100%),
    url("../images/hero-network-city.png") center / cover no-repeat,
    #061327;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .25;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 96%);
}

.hero::after {
  content: "";
  position: absolute;
  width: 680px;
  height: 680px;
  right: -310px;
  top: 5%;
  border: 1px solid rgba(51,200,255,.18);
  border-radius: 50%;
  box-shadow: 0 0 0 92px rgba(51,200,255,.035), 0 0 0 185px rgba(51,200,255,.025);
  animation: breathe 7s ease-in-out infinite;
}

@keyframes breathe {
  50% { transform: scale(1.06); opacity: .72; }
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  align-items: center;
  gap: 64px;
}

.hero-copy { max-width: 720px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 23px;
  padding: 8px 14px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 999px;
  color: #DDF7FF;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(10px);
  font-size: .88rem;
  font-weight: 750;
}

.hero-badge-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 18px var(--accent);
  animation: pulse-dot 1.8s ease-in-out infinite;
}

@keyframes pulse-dot {
  50% { transform: scale(1.35); box-shadow: 0 0 24px var(--accent); }
}

.hero h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(3.2rem, 7vw, 6.1rem);
  letter-spacing: -.055em;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
  text-shadow: 0 0 36px rgba(51,200,255,.22);
}

.hero-copy > p {
  max-width: 660px;
  margin-bottom: 34px;
  color: #D4E5FF;
  font-size: clamp(1.05rem, 2vw, 1.22rem);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  color: #EDF6FF;
  font-size: .94rem;
  font-weight: 700;
}

.hero-points span { display: inline-flex; align-items: center; gap: 8px; }
.hero-points span::before {
  content: "✓";
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #05244F;
  background: var(--accent);
  font-size: .74rem;
  font-weight: 900;
}

.network-visual { position: relative; min-height: 510px; }

.network-core {
  position: absolute;
  inset: 64px 0 56px 48px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 40px;
  background: rgba(255,255,255,.085);
  box-shadow: 0 34px 80px rgba(0,0,0,.24);
  backdrop-filter: blur(18px);
}

.network-core::before {
  content: "";
  position: absolute;
  width: 370px;
  height: 370px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(51,200,255,.38);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(51,200,255,.055), 0 0 0 140px rgba(51,200,255,.035);
}

.network-core::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(51,200,255,.18), transparent 50%);
  animation: network-glow 4s ease-in-out infinite;
}

@keyframes network-glow { 50% { opacity: .45; transform: scale(1.08); } }

.node {
  position: absolute;
  z-index: 3;
  width: 68px;
  height: 68px;
  display: grid;
  place-items: center;
  border-radius: 22px;
  color: var(--primary-dark);
  background: linear-gradient(135deg, #fff, #DFF7FF);
  box-shadow: 0 16px 34px rgba(0,0,0,.2);
  font-size: .84rem;
  font-weight: 900;
}

.node-center {
  width: 112px;
  height: 112px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 36px;
  background: linear-gradient(135deg, var(--accent), #fff);
  font-size: 1.45rem;
}

.node-1 { left: 11%; top: 15%; }
.node-2 { right: 11%; top: 15%; }
.node-3 { left: 9%; bottom: 13%; }
.node-4 { right: 10%; bottom: 12%; }

.network-line {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 50%;
  height: 2px;
  transform-origin: left center;
  background: linear-gradient(90deg, var(--accent), rgba(51,200,255,.15));
  box-shadow: 0 0 12px rgba(51,200,255,.8);
}

.network-line::after {
  content: "";
  position: absolute;
  width: 9px;
  height: 9px;
  top: 50%;
  left: 0;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 18px var(--accent);
  animation: packet 2.4s linear infinite;
}

@keyframes packet {
  0% { left: 0; opacity: 0; transform: translateY(-50%) scale(.55); }
  12% { opacity: 1; }
  88% { opacity: 1; }
  100% { left: calc(100% - 8px); opacity: 0; transform: translateY(-50%) scale(1); }
}

.line-1 { width: 148px; transform: rotate(-145deg); }
.line-2 { width: 148px; transform: rotate(-35deg); }
.line-3 { width: 154px; transform: rotate(145deg); }
.line-4 { width: 154px; transform: rotate(35deg); }
.line-2::after { animation-delay: .55s; }
.line-3::after { animation-delay: 1.1s; }
.line-4::after { animation-delay: 1.65s; }

.network-chip {
  position: absolute;
  z-index: 4;
  padding: 18px 20px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 21px;
  background: rgba(255,255,255,.1);
  box-shadow: 0 22px 50px rgba(0,0,0,.22);
  backdrop-filter: blur(16px);
}

.network-chip strong { display: block; font-size: 1.7rem; }
.network-chip span { color: #CEE3FF; font-size: .84rem; }
.speed-chip { right: -6px; top: 4px; }
.uptime-chip { left: 0; bottom: 0; }

.scroll-hint {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 24px;
  display: grid;
  gap: 7px;
  place-items: center;
  transform: translateX(-50%);
  color: rgba(255,255,255,.55);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .12em;
}

.scroll-hint::after {
  content: "";
  width: 1px;
  height: 28px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scroll-line 1.7s ease-in-out infinite;
}

@keyframes scroll-line { 50% { transform: scaleY(.55); transform-origin: top; } }

/* Trust strip */
.trust-strip {
  position: relative;
  z-index: 5;
  margin-top: -34px;
}

.trust-inner {
  display: grid;
  grid-template-columns: 1.25fr repeat(4, 1fr);
  align-items: center;
  gap: 18px;
  padding: 22px 26px;
  border: 1px solid rgba(229,234,243,.8);
  border-radius: 23px;
  background: rgba(255,255,255,.96);
  box-shadow: var(--shadow-md);
}

.trust-title { color: var(--text-muted); font-size: .9rem; font-weight: 700; }
.trust-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 42px;
  border-left: 1px solid var(--border);
  color: #536078;
  font-size: .89rem;
  font-weight: 800;
}

.trust-icon {
  width: 33px;
  height: 33px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: var(--primary);
  background: var(--surface-soft);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.service-card {
  position: relative;
  height: 100%;
  overflow: hidden;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.service-card::after {
  content: "";
  position: absolute;
  width: 160px;
  height: 160px;
  right: -95px;
  bottom: -95px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(51,200,255,.18), transparent 68%);
  transition: transform .35s ease;
}

.service-card:hover {
  transform: translateY(-7px);
  border-color: rgba(21,101,216,.32);
  box-shadow: var(--shadow-md);
}

.service-card:hover::after { transform: scale(1.45); }

.service-icon {
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  margin-bottom: 21px;
  border-radius: 19px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  box-shadow: 0 13px 28px rgba(21,101,216,.23);
}

.service-icon img { width: 29px; height: 29px; }
.service-card h3 { margin-bottom: 10px; font-size: 1.27rem; }
.service-card p { color: var(--text-muted); }
.service-link {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 18px;
  color: var(--primary);
  font-size: .9rem;
  font-weight: 850;
}
.service-link span { transition: transform .2s ease; }
.service-link:hover span { transform: translateX(4px); }

/* Tariffs */
.tariff-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}

.tariff-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 31px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

.tariff-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }

.tariff-card.featured {
  color: #fff;
  border: 0;
  background:
    radial-gradient(circle at 90% 7%, rgba(51,200,255,.28), transparent 27%),
    linear-gradient(155deg, var(--primary-dark), var(--primary));
  box-shadow: 0 30px 75px rgba(10,46,138,.28);
  transform: translateY(-13px);
}

.tariff-card.featured:hover { transform: translateY(-18px); }

.tariff-badge {
  position: absolute;
  top: 19px;
  right: 19px;
  padding: 6px 11px;
  border-radius: 999px;
  color: var(--primary-dark);
  background: var(--accent);
  font-size: .73rem;
  font-weight: 900;
}

.tariff-name { color: var(--primary); font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.featured .tariff-name { color: var(--accent); }
.tariff-speed { margin: 18px 0 4px; font-size: 3.15rem; line-height: 1; font-weight: 900; letter-spacing: -.05em; }
.tariff-unit, .tariff-desc, .tariff-list { color: var(--text-muted); }
.featured .tariff-unit, .featured .tariff-desc, .featured .tariff-list { color: #DCEAFF; }
.tariff-desc { margin: 19px 0 23px; }
.tariff-price { display: flex; align-items: baseline; gap: 7px; margin-bottom: 23px; }
.tariff-price strong { font-size: 2.05rem; }
.tariff-list { display: grid; gap: 12px; margin-bottom: 29px; }
.tariff-list li { position: relative; padding-left: 26px; }
.tariff-list li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 900; }
.featured .tariff-list li::before { color: var(--accent); }
.tariff-card .button { width: 100%; margin-top: auto; }

.tariff-note {
  margin-top: 28px;
  padding: 19px 22px;
  border: 1px solid var(--border);
  border-radius: 18px;
  color: var(--text-muted);
  background: rgba(255,255,255,.72);
  text-align: center;
  font-size: .92rem;
}

/* Advantages */
.advantages-layout {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 58px;
  align-items: center;
}

.advantages-panel {
  position: relative;
  overflow: hidden;
  padding: 38px;
  border-radius: var(--radius-lg);
  color: #fff;
  background:
    radial-gradient(circle at 80% 18%, rgba(51,200,255,.3), transparent 34%),
    linear-gradient(145deg, #07152E, var(--primary-dark));
  box-shadow: var(--shadow-lg);
}

.advantages-panel::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  right: -150px;
  bottom: -150px;
  border: 1px solid rgba(51,200,255,.25);
  border-radius: 50%;
  box-shadow: 0 0 0 48px rgba(51,200,255,.04), 0 0 0 96px rgba(51,200,255,.025);
}

.advantages-panel p { color: #CFE2FF; }

.stats-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 16px;
  margin-top: 28px;
}

.stat-box {
  padding: 23px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 19px;
  background: rgba(255,255,255,.07);
  backdrop-filter: blur(10px);
}

.stat-box strong { display: block; color: var(--accent); font-size: 2rem; line-height: 1.1; }
.stat-box span { color: #CFE2FF; font-size: .9rem; }

.feature-list { display: grid; gap: 16px; }

.feature-item {
  display: flex;
  gap: 16px;
  padding: 21px;
  border: 1px solid var(--border);
  border-radius: 19px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .22s ease, box-shadow .22s ease;
}

.feature-item:hover { transform: translateX(5px); box-shadow: var(--shadow-md); }

.feature-check {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  font-weight: 900;
}

.feature-item h3 { margin-bottom: 5px; font-size: 1.05rem; }
.feature-item p { color: var(--text-muted); font-size: .94rem; }

/* Coverage */
.coverage-card {
  position: relative;
  overflow: hidden;
  padding: 47px;
  border-radius: var(--radius-lg);
  color: #fff;
  background:
    radial-gradient(circle at 8% 90%, rgba(33,150,243,.25), transparent 30%),
    linear-gradient(135deg, #07152E, var(--primary-dark));
  box-shadow: var(--shadow-lg);
}

.coverage-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 38px; align-items: center; }
.coverage-copy p { margin: 16px 0 27px; color: #CFE1FF; }

.coverage-search {
  display: flex;
  gap: 10px;
  padding: 8px;
  border-radius: 17px;
  background: #fff;
  box-shadow: 0 12px 35px rgba(0,0,0,.18);
}

.coverage-search input {
  flex: 1;
  min-width: 0;
  padding: 0 13px;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
}

.coverage-result {
  display: none;
  align-items: center;
  gap: 10px;
  margin-top: 15px;
  padding: 13px 15px;
  border: 1px solid rgba(51,200,255,.3);
  border-radius: 13px;
  color: #E3F8FF;
  background: rgba(51,200,255,.1);
  font-size: .91rem;
  font-weight: 700;
}

.coverage-result.visible { display: flex; }

.coverage-map {
  position: relative;
  aspect-ratio: 256 / 155;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 28px;
  background-color: #061327;
  background-image: url("../images/coverage-russia.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.review-card {
  position: relative;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 23px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

.review-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.quote-mark { position: absolute; top: 15px; right: 21px; color: var(--surface-soft); font-size: 4.8rem; font-family: Georgia, serif; line-height: 1; }
.stars { position: relative; z-index: 2; margin-bottom: 17px; color: var(--warning); letter-spacing: 2px; }
.review-card > p { position: relative; z-index: 2; margin-bottom: 23px; color: var(--text-muted); }
.person { display: flex; align-items: center; gap: 12px; }
.avatar { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: linear-gradient(135deg, var(--primary), var(--accent)); font-weight: 900; }
.person span { display: block; color: var(--text-muted); font-size: .86rem; }

/* FAQ */
.faq-list { max-width: 900px; margin-inline: auto; display: grid; gap: 13px; }
.faq-item {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 21px;
  border: 0;
  color: var(--text);
  background: transparent;
  text-align: left;
  font-weight: 850;
}
.faq-icon { flex: 0 0 30px; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 10px; color: var(--primary); background: var(--surface-soft); transition: transform .22s ease; }
.faq-answer { max-height: 0; overflow: hidden; color: var(--text-muted); transition: max-height .28s ease; }
.faq-answer p { padding: 0 21px 21px; }
.faq-item.open .faq-icon { transform: rotate(45deg); }

/* Contact */
.contact-card {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
}

.contact-info {
  position: relative;
  overflow: hidden;
  padding: 47px;
  color: #fff;
  background:
    radial-gradient(circle at 82% 9%, rgba(51,200,255,.28), transparent 30%),
    linear-gradient(145deg, #07152E, var(--primary-dark));
}
.contact-info::after {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -120px;
  bottom: -120px;
  border: 1px solid rgba(51,200,255,.25);
  border-radius: 50%;
  box-shadow: 0 0 0 45px rgba(51,200,255,.04), 0 0 0 90px rgba(51,200,255,.025);
}
.contact-info p { margin: 16px 0 29px; color: #CFE2FF; }
.contact-list { position: relative; z-index: 2; display: grid; gap: 15px; }
.contact-list a, .contact-list div { display: flex; align-items: center; gap: 12px; color: #EDF6FF; }
.contact-list-icon { width: 33px; height: 33px; display: grid; place-items: center; border-radius: 11px; color: var(--accent); background: rgba(255,255,255,.08); }

.contact-form { padding: 47px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .9rem; font-weight: 800; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 14px 15px;
  border: 1px solid var(--border);
  border-radius: 13px;
  outline: 0;
  color: var(--text);
  background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(21,101,216,.1); }
.field textarea { min-height: 120px; resize: vertical; }
.form-note { margin-top: 14px; color: var(--text-muted); font-size: .83rem; }
.form-message {
  display: none;
  margin-top: 16px;
  padding: 13px 15px;
  border: 1px solid #BBF7D0;
  border-radius: 13px;
  color: #075A24;
  background: #DCFCE7;
  font-size: .92rem;
  font-weight: 750;
}
.form-message.visible { display: block; }

/* Модальные окна */
.site-modal:not([open]) { display: none; }
.site-modal {
  position: fixed;
  inset: 0;
  width: min(900px, calc(100% - 32px));
  max-width: none;
  max-height: calc(100dvh - 32px);
  margin: auto;
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 24px;
  color: var(--text);
  background: transparent;
}

.site-modal::backdrop {
  background: rgba(7, 21, 46, .72);
  backdrop-filter: blur(7px);
}

.site-modal[open] { animation: modal-in .2s ease-out; }

.site-modal-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .7);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 35px 100px rgba(5, 31, 88, .35);
}

.site-modal-content {
  max-height: calc(100dvh - 32px);
  padding: clamp(26px, 5vw, 52px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.site-modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  z-index: 2;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text);
  background: rgba(255, 255, 255, .94);
  box-shadow: var(--shadow-sm);
  font-size: 1.7rem;
  line-height: 1;
  transition: color .2s ease, background .2s ease, transform .2s ease;
}

.site-modal-close:hover {
  color: #fff;
  background: var(--primary);
  transform: rotate(4deg);
}

.site-modal-close:focus-visible {
  outline: 3px solid rgba(51, 200, 255, .5);
  outline-offset: 3px;
}

.legal-modal .legal-card { padding-right: 34px; }

.legal-modal h2 {
  max-width: 720px;
  margin: 0 0 12px;
  padding-right: 20px;
  color: #16213C;
  font-size: clamp(1.85rem, 5vw, 2.8rem);
}

.legal-modal h3 {
  margin: 30px 0 9px;
  color: #16213C;
  font-size: 1.2rem;
}

.legal-modal p, .legal-modal dd { color: #414756; }
.legal-modal .legal-modal-meta { margin-bottom: 28px; color: var(--text-muted); }

.legal-modal .legal-modal-warning {
  margin: 22px 0;
  padding: 14px 16px;
  border: 1px solid #FDE68A;
  border-radius: 12px;
  color: #854D0E;
  background: #FEFCE8;
}

.legal-details {
  display: grid;
  grid-template-columns: minmax(150px, .6fr) 1.4fr;
  margin: 26px 0 0;
  border-top: 1px solid var(--border);
}

.legal-details dt, .legal-details dd {
  margin: 0;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
}

.legal-details dt {
  color: var(--text-muted);
  font-weight: 800;
}

.legal-details dd { overflow-wrap: anywhere; }

/* Окно будущего чата */
.chat-modal { width: min(520px, calc(100% - 32px)); }
.chat-modal .site-modal-content { padding: 0; }

.chat-modal-header {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 25px 72px 24px 26px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
}

.chat-modal-icon {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 16px;
  background: rgba(255, 255, 255, .12);
}

.chat-modal-icon img { width: 24px; height: 24px; }

.chat-modal-header h2 {
  margin: 0 0 4px;
  color: #fff;
  font-size: 1.35rem;
  letter-spacing: -.02em;
}

.chat-modal-header p {
  display: flex;
  align-items: center;
  gap: 7px;
  color: rgba(255, 255, 255, .78);
  font-size: .84rem;
  font-weight: 700;
}

.chat-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning);
  box-shadow: 0 0 0 4px rgba(245, 158, 11, .18);
}

.chat-modal-body {
  display: grid;
  gap: 19px;
  padding: 28px 26px 30px;
  background: var(--background);
}

.chat-message {
  max-width: 88%;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 8px 18px 18px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.chat-message strong {
  display: block;
  margin-bottom: 4px;
  color: var(--primary);
  font-size: .82rem;
}

.chat-message p { color: var(--text); }
.chat-modal-note { color: var(--text-muted); font-size: .9rem; }
.chat-modal-body .button { justify-self: start; }

@keyframes modal-in {
  from { opacity: 0; transform: translateY(14px) scale(.98); }
  to { opacity: 1; transform: none; }
}

/* Footer */
footer { padding: 38px 0; border-top: 1px solid var(--border); color: var(--text-muted); background: #fff; }
.footer-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-brand { display: flex; align-items: center; gap: 11px; color: var(--text); font-weight: 900; }
.footer-brand .brand-mark { width: 38px; height: 38px; border-radius: 13px; font-size: .84rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 19px; font-size: .9rem; }
.footer-links a:hover { color: var(--primary); }

/* Floating button */
.floating-contact {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 80;
  width: 57px;
  height: 57px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 17px 38px rgba(21,101,216,.35);
  transition: transform .22s ease;
}
.floating-contact:hover { transform: translateY(-4px) scale(1.03); }
.floating-contact img { width: 26px; height: 26px; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

.mobile-menu-contacts { display: none; }

@media (max-width: 1180px) {
  .header-contacts { display: none; }
}

@media (max-width: 1020px) {
  .nav-links, .nav-actions .nav-button { display: none; }
  .menu-toggle { display: grid; }
  .nav-links.open {
    position: fixed;
    inset: calc(var(--header-height) + 10px) 20px auto;
    z-index: 110;
    display: grid;
    gap: 4px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 19px;
    background: rgba(255,255,255,.98);
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open .nav-link { padding: 12px 10px; color: var(--text); }

  .nav-links.open::after {
    content: "";
    height: 1px;
    margin: 7px 10px;
    background: var(--border);
  }

  .nav-links.open .mobile-menu-contacts {
    display: grid;
    gap: 8px;
    padding: 6px 10px 2px;
  }

  .mobile-menu-contacts a {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 42px;
    padding: 8px 10px;
    border-radius: 12px;
    color: var(--text);
    background: var(--surface-soft);
    font-size: .9rem;
    font-weight: 750;
  }

  .mobile-menu-contacts span {
    color: var(--primary);
    font-size: 1rem;
  }

  .hero-grid, .advantages-layout, .coverage-layout, .contact-card { grid-template-columns: 1fr; }
  .network-visual { min-height: 455px; }
  .network-core { inset: 40px 12px 52px; }
  .services-grid, .tariff-grid, .reviews-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .tariff-card.featured, .tariff-card.featured:hover { transform: none; }
  .trust-inner { grid-template-columns: repeat(2, 1fr); }
  .trust-title { grid-column: 1 / -1; text-align: center; }
  .trust-item { border-left: 0; }
}

@media (max-width: 720px) {
  :root { --header-height: 70px; }
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 78px 0; }
  #faq { background-position: 18% center; }
  .hero { padding: 116px 0 84px; }
  .hero h1 { font-size: clamp(3rem, 15vw, 4.4rem); }
  .hero-actions .button { width: 100%; }
  .network-visual { min-height: 355px; }
  .network-core { inset: 28px 0 40px; border-radius: 30px; }
  .network-core::before { width: 270px; height: 270px; box-shadow: 0 0 0 48px rgba(51,200,255,.05), 0 0 0 96px rgba(51,200,255,.03); }
  .node { width: 52px; height: 52px; border-radius: 17px; font-size: .68rem; }
  .node-center { width: 88px; height: 88px; border-radius: 28px; font-size: 1.12rem; }
  .network-line { width: 108px; }
  .line-3, .line-4 { width: 112px; }
  .network-chip { padding: 13px 15px; border-radius: 16px; }
  .network-chip strong { font-size: 1.28rem; }
  .network-chip span { font-size: .72rem; }
  .speed-chip { right: 0; }
  .trust-strip { margin-top: -24px; }
  .trust-inner { grid-template-columns: 1fr; padding: 20px; }
  .trust-item { justify-content: flex-start; }
  .services-grid, .tariff-grid, .reviews-grid, .stats-grid, .form-grid { grid-template-columns: 1fr; }
  .coverage-card, .advantages-panel, .contact-info, .contact-form { padding: 29px; }
  .coverage-search { flex-direction: column; padding: 0; background: transparent; box-shadow: none; }
  .coverage-search input { min-height: 53px; padding: 0 15px; border-radius: 14px; background: #fff; }
  .coverage-search .button { width: 100%; }
  .field.full { grid-column: auto; }
  .site-modal {
    width: calc(100% - 20px);
    max-height: calc(100dvh - 20px);
    border-radius: 19px;
  }
  .site-modal-shell { border-radius: 19px; }
  .site-modal-content {
    max-height: calc(100dvh - 20px);
    padding: 25px 19px 30px;
  }
  .legal-modal .legal-card { padding-right: 0; }
  .legal-modal h2 {
    padding-right: 42px;
    font-size: 1.75rem;
  }
  .legal-details { grid-template-columns: 1fr; }
  .legal-details dt {
    padding-bottom: 0;
    border-bottom: 0;
  }
  .legal-details dd { padding-top: 4px; }
  .site-modal-close {
    top: 10px;
    right: 10px;
    width: 38px;
    height: 38px;
    border-radius: 12px;
  }
  .chat-modal-header { padding: 21px 58px 20px 20px; }
  .chat-modal-icon {
    width: 43px;
    height: 43px;
    border-radius: 14px;
  }
  .chat-modal-header h2 { padding-right: 0; font-size: 1.18rem; }
  .chat-modal-body { padding: 24px 20px 26px; }
  .chat-message { max-width: 100%; }
  .chat-modal-body .button { width: 100%; }
  .footer-row { align-items: flex-start; flex-direction: column; }
  .scroll-hint { display: none; }
  .floating-contact { right: 15px; bottom: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}