:root {
  --blue: #075cf4;
  --blue-dark: #061d52;
  --text: #121624;
  --muted: #66708a;
  --line: #dce5f3;
  --soft: #f4f8ff;
  --green: #26c653;
  --shadow: 0 18px 42px rgba(24, 58, 118, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, "Helvetica Neue", sans-serif;
  color: var(--text);
  background: #fff;
  padding-bottom: 96px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px clamp(20px, 5vw, 72px);
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid #edf2fa;
  backdrop-filter: blur(14px);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand strong { display: block; font-size: clamp(25px, 4vw, 34px); line-height: 1; font-weight: 800; }
.brand small { display: block; margin-top: 5px; color: var(--muted); font-size: clamp(14px, 2vw, 17px); white-space: nowrap; }
.signal-mark { display: flex; align-items: end; gap: 4px; height: 36px; }
.signal-mark i { width: 8px; border-radius: 3px 3px 0 0; background: var(--blue); box-shadow: 0 7px 15px rgba(7,92,244,.28); }
.signal-mark i:nth-child(1) { height: 12px; opacity: .75; }
.signal-mark i:nth-child(2) { height: 20px; opacity: .82; }
.signal-mark i:nth-child(3) { height: 28px; opacity: .9; }
.signal-mark i:nth-child(4) { height: 36px; }
.nav { display: none; align-items: center; gap: 28px; color: var(--muted); font-weight: 700; }
.header-actions { display: flex; align-items: center; gap: 18px; }
.round-btn, .menu-btn {
  width: 58px;
  height: 58px;
  border: 2px solid var(--blue);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff;
  color: var(--blue);
}
.round-btn svg { width: 28px; height: 28px; fill: currentColor; }
.menu-btn { border: 0; border-radius: 0; gap: 7px; }
.menu-btn span { display: block; width: 42px; height: 4px; background: #6c7487; border-radius: 4px; }

.section { max-width: 1220px; margin: 0 auto; padding: clamp(34px, 7vw, 72px) clamp(20px, 5vw, 72px); }
.section-head { text-align: center; margin-bottom: 28px; }
h1, h2, h3, p { margin: 0; }
h1 { color: var(--blue-dark); font-size: clamp(38px, 7vw, 64px); line-height: 1.17; letter-spacing: 0; }
h2 { color: var(--blue-dark); font-size: clamp(28px, 4.2vw, 40px); line-height: 1.18; }
h3 { color: var(--text); font-size: 18px; }
.section-head p, .lead { color: var(--muted); font-size: clamp(22px, 3vw, 28px); line-height: 1.45; }
.eyebrow { color: var(--blue); font-size: 17px; font-weight: 800; line-height: 1.35; text-transform: uppercase; }

.hero {
  max-width: none;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  overflow: hidden;
  min-height: 760px;
  align-items: center;
  background:
    linear-gradient(90deg, #fff 0%, rgba(255,255,255,.96) 38%, rgba(255,255,255,.72) 58%, rgba(255,255,255,0) 82%),
    url("assets/hero-main.png") center right / cover no-repeat;
}
.hero-copy { position: relative; z-index: 1; max-width: 760px; }
.hero-copy > * + * { margin-top: 24px; }
.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.benefits div {
  min-height: 124px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 16px 12px;
  background: rgba(255,255,255,.94);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 10px 32px rgba(16, 57, 120, .08);
}
.benefits strong { color: var(--blue); font-size: 36px; line-height: 1; }
.benefits span { font-size: 16px; line-height: 1.25; }
.hero-buttons { display: grid; gap: 14px; }
.btn {
  min-height: 64px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  padding: 16px 22px;
  border: 2px solid var(--blue);
  font-weight: 700;
  font-size: 19px;
  text-align: center;
}
.primary { color: #fff; background: linear-gradient(180deg, #0769ff, #034edc); box-shadow: 0 12px 24px rgba(7,92,244,.22); }
.outline { color: var(--blue); background: #fff; }
.soft-card, .faq, .request {
  background: rgba(248,251,255,.92);
  border: 1px solid #edf3fb;
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 18px; }
.problem { display: grid; grid-template-columns: 76px 1fr; align-items: center; gap: 16px; font-size: 20px; line-height: 1.35; }
.note, .legal, .warranty {
  margin-top: 30px;
  display: grid;
  grid-template-columns: 74px 1fr;
  align-items: center;
  gap: 18px;
  padding: 24px;
  border-radius: 18px;
  background: linear-gradient(90deg, #eaf3ff, #f3f8ff);
  font-size: 20px;
  line-height: 1.5;
}
.icon {
  width: 56px;
  height: 56px;
  display: inline-grid;
  place-items: center;
  color: var(--blue);
  border-radius: 50%;
  background: #fff;
  border: 1px solid #e8eef8;
  box-shadow: 0 10px 24px rgba(28, 61, 112, .08);
  position: relative;
  flex: 0 0 auto;
}
.icon::before { font-size: 31px; font-weight: 800; line-height: 1; }
.bars::before { content: "▂▃▅▇"; font-size: 26px; }
.loader::before { content: "✣"; }
.no-signal::before { content: "×"; border: 4px solid var(--blue); width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-size: 22px; }
.wifi::before { content: "⌁"; font-size: 38px; }
.bulb::before { content: "♧"; }
.shield::before { content: "✓"; border: 3px solid var(--blue); width: 28px; height: 34px; border-radius: 16px 16px 20px 20px; display: grid; place-items: center; font-size: 20px; }
.truck::before { content: "▭"; }
.home::before { content: "⌂"; }
.office::before { content: "▦"; }
.warehouse::before { content: "▤"; }
.doc::before { content: "□"; }
.search::before { content: "⌕"; }
.tool::before { content: "♢"; }
.check::before { content: "✓"; }
.like::before { content: "♙"; }
.card::before { content: "▭"; }

.places-grid, .case-grid, .kits-grid { display: grid; gap: 18px; }
.places-grid { grid-template-columns: 1fr; }
.place-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 14px 30px rgba(18,48,88,.08);
}
.place-card img { width: 100%; height: 240px; object-fit: cover; }
.place-card div { display: grid; grid-template-columns: 62px 1fr; align-items: center; gap: 12px; min-height: 96px; padding: 16px 20px; font-size: 20px; line-height: 1.35; }

.steps-signal { display: grid; gap: 24px; }
.steps-signal article { text-align: center; }
.circle { width: 126px; height: 126px; margin: 0 auto 16px; border-radius: 50%; background: #f0f5ff; display: grid; place-items: center; }
.circle::before { color: var(--blue-dark); font-size: 58px; }
.tower::before { content: "♜"; }
.amp::before { content: "▣"; }
.phone::before { content: "▯"; }
.steps-signal h3 { display: flex; justify-content: center; align-items: center; gap: 8px; }
.steps-signal h3 span {
  width: 28px;
  height: 28px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--blue);
}
.steps-signal p { margin-top: 10px; color: var(--muted); line-height: 1.55; }

.case-grid { grid-template-columns: 1fr; }
.case-card, .kit-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.case-card { padding: 18px; }
.case-card img { width: 100%; height: 190px; object-fit: cover; border-radius: 10px; margin-bottom: 14px; }
.case-card p { margin: 12px 0 14px; line-height: 1.45; }
.case-card a, .text-link { color: var(--blue); font-weight: 800; }
.case-card a::after, .text-link::after { content: " →"; }

.kits-grid { grid-template-columns: 1fr; }
.kit-card { position: relative; padding: 26px 22px 20px; }
.kit-card.popular { border: 2px solid var(--blue); }
.kit-card em {
  position: absolute;
  top: 0;
  right: 22px;
  transform: translateY(-1px);
  padding: 8px 14px;
  color: #fff;
  background: var(--blue);
  border-radius: 0 0 8px 8px;
  font-style: normal;
  font-weight: 800;
}
.kit-card > p { margin-top: 4px; color: var(--muted); }
.kit-card ul { list-style: none; padding: 0; margin: 22px 0; display: grid; gap: 11px; color: #28324a; }
.kit-card li::before { content: "✓"; color: var(--blue); margin-right: 10px; font-weight: 800; }
.kit-card img { height: 112px; margin: 8px auto 18px; object-fit: contain; }
.kit-card strong { display: block; margin-bottom: 16px; font-size: 26px; }
.kit-card .btn { width: 100%; min-height: 52px; font-size: 16px; border-radius: 8px; }
.text-link { display: block; margin: 28px auto 0; text-align: center; }

.install-track { display: grid; grid-template-columns: 1fr; gap: 16px; }
.install-track article { display: grid; grid-template-columns: 64px 1fr; gap: 10px 14px; align-items: center; padding: 18px; border: 1px solid #edf2fa; border-radius: 16px; background: #fff; }
.install-track strong { color: var(--blue); }
.install-track span { grid-column: 2; color: var(--muted); line-height: 1.4; }

.faq { padding: clamp(24px, 5vw, 38px); }
.faq h2, .request h2 { margin-bottom: 18px; }
.faq-list { display: grid; gap: 10px; }
.faq-list button {
  width: 100%;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  text-align: left;
  cursor: pointer;
}
.faq-list button span { color: var(--blue); font-size: 28px; }
.faq-list p { display: none; padding: 4px 20px 14px; color: var(--muted); line-height: 1.45; }
.faq-list button.open + p { display: block; }

.request { padding: clamp(24px, 5vw, 38px); }
.request > p { margin-bottom: 24px; color: var(--muted); font-size: 22px; }
form { display: grid; gap: 14px; }
input {
  width: 100%;
  min-height: 64px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
}
input::placeholder { color: #99a3b9; }
.messengers { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.messengers label {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.messengers input { width: 20px; min-height: auto; accent-color: var(--green); }
.submit { width: 100%; border: 0; cursor: pointer; }
form small { text-align: center; color: #8a93a8; font-size: 16px; }

.service {
  display: grid;
  gap: 20px;
  overflow: hidden;
  min-height: 430px;
  background:
    linear-gradient(90deg, #fff 0%, rgba(255,255,255,.96) 42%, rgba(255,255,255,.62) 62%, rgba(255,255,255,0) 88%),
    url("assets/service-footer.png") center right / cover no-repeat;
  border-radius: 18px;
  margin-bottom: 26px;
  align-items: center;
}
.service-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px 16px; margin-top: 32px; }
.service-grid p { display: flex; align-items: center; gap: 12px; line-height: 1.35; }
.bottom-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr 1fr 1.25fr;
  gap: 10px;
  padding: 12px clamp(14px, 4vw, 42px) calc(12px + env(safe-area-inset-bottom));
  background: rgba(255,255,255,.96);
  border-top: 1px solid #edf2fa;
  box-shadow: 0 -12px 30px rgba(32, 62, 112, .10);
  backdrop-filter: blur(16px);
}
.bottom-btn {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  font-weight: 700;
  font-size: clamp(13px, 3.2vw, 21px);
  white-space: nowrap;
}
.call::before { content: "☎"; color: var(--green); margin-right: 10px; font-size: 25px; }
.whatsapp::before { content: "◉"; color: var(--green); margin-right: 10px; font-size: 25px; }
.request-link { color: #fff; background: linear-gradient(180deg, #0769ff, #034edc); border-color: transparent; }
.request-link::before { content: "□"; margin-right: 10px; font-size: 25px; }

@media (min-width: 680px) {
  .nav { display: flex; }
  .places-grid, .case-grid, .kits-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-signal { grid-template-columns: repeat(3, 1fr); }
  .install-track { grid-template-columns: repeat(5, 1fr); }
  .install-track article { display: block; text-align: center; padding: 0; border: 0; background: transparent; }
  .install-track .icon { margin: 0 auto 12px; }
  .install-track span { display: block; margin-top: 8px; }
}

@media (min-width: 980px) {
  .hero { padding-top: 76px; }
  .places-grid, .kits-grid { grid-template-columns: repeat(3, 1fr); }
  .places-grid .place-card:nth-child(4) { grid-column: 2; }
  .case-grid { grid-template-columns: repeat(3, 1fr); }
  .service { grid-template-columns: 1fr 1.05fr; }
}

@media (max-width: 560px) {
  .site-header { padding: 20px 18px; }
  .brand small { font-size: 13px; }
  .signal-mark { height: 30px; }
  .signal-mark i { width: 7px; }
  .round-btn, .menu-btn { width: 48px; height: 48px; }
  .menu-btn span { width: 34px; height: 3px; }
  .section { padding-left: 16px; padding-right: 16px; }
  h1 { font-size: 34px; line-height: 1.2; }
  h2 { font-size: 25px; }
  .section-head p, .lead { font-size: 21px; }
  .hero {
    min-height: 760px;
    padding-top: 34px;
    padding-bottom: 120px;
    align-items: start;
    background:
      linear-gradient(90deg, #fff 0%, rgba(255,255,255,.98) 52%, rgba(255,255,255,.7) 76%, rgba(255,255,255,.18) 100%),
      linear-gradient(180deg, rgba(255,255,255,0) 0%, #fff 88%),
      url("assets/hero-main.png") 72% 55% / auto 58% no-repeat;
  }
  .hero .lead { max-width: none; }
  .hero-copy { max-width: 100%; }
  .hero-copy > * + * { margin-top: 20px; }
  .benefits { gap: 8px; }
  .benefits div { min-height: 96px; padding: 12px 8px; border-radius: 12px; }
  .benefits strong { font-size: 27px; }
  .benefits span { font-size: 12px; }
  .btn { min-height: 58px; font-size: 17px; }
  .problem-grid, .service-grid { grid-template-columns: 1fr; }
  .problem { grid-template-columns: 64px 1fr; }
  .note, .legal, .warranty { grid-template-columns: 58px 1fr; padding: 18px; font-size: 17px; }
  .place-card img { height: 190px; }
  .service {
    min-height: 520px;
    padding-top: 28px;
    padding-bottom: 190px;
    align-items: start;
    background:
      linear-gradient(90deg, #fff 0%, rgba(255,255,255,.98) 54%, rgba(255,255,255,.76) 80%, rgba(255,255,255,.2) 100%),
      linear-gradient(180deg, rgba(255,255,255,0) 0%, #fff 92%),
      url("assets/service-footer.png") 64% bottom / auto 46% no-repeat;
  }
  .bottom-bar { grid-template-columns: .95fr .98fr 1.22fr; gap: 6px; padding-left: 8px; padding-right: 8px; }
  .bottom-btn { min-height: 52px; border-radius: 10px; padding: 8px 5px; font-size: 12px; }
  .call::before, .whatsapp::before, .request-link::before { margin-right: 4px; font-size: 18px; }
}

@media (max-width: 380px) {
  .site-header { padding-top: 16px; padding-bottom: 16px; }
  h1 { font-size: 31px; }
  .section-head p, .lead { font-size: 19px; }
  .eyebrow { font-size: 16px; }
  .hero { padding-top: 30px; }
  .hero-copy > * + * { margin-top: 16px; }
  .benefits div { min-height: 88px; }
  .benefits strong { font-size: 25px; }
  .benefits span { font-size: 11px; }
  .btn { min-height: 52px; font-size: 16px; }
  .hero {
    min-height: 720px;
    background:
      linear-gradient(90deg, #fff 0%, rgba(255,255,255,.985) 54%, rgba(255,255,255,.76) 80%, rgba(255,255,255,.22) 100%),
      linear-gradient(180deg, rgba(255,255,255,0) 0%, #fff 88%),
      url("assets/hero-main.png") 72% 55% / auto 54% no-repeat;
  }
}