:root {
  --bg: #0c0f14;
  --bg-card: #141a24;
  --bg-muted: #f4f6f9;
  --text: #e8ecf2;
  --text-muted: #8b95a8;
  --text-dark: #1a2230;
  --text-dark-muted: #5c6778;
  --accent: #f0a500;
  --accent-hover: #ffb820;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --font: 'Manrope', system-ui, sans-serif;
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

.container {
  width: min(1140px, 100% - 2rem);
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-weight: 600;
  border-radius: 10px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  padding: 0.75rem 1.5rem;
}

.btn--primary:hover {
  background: var(--primary-hover);
}

.btn--accent {
  background: var(--accent);
  color: var(--text-dark);
  padding: 0.75rem 1.5rem;
}

.btn--accent:hover {
  background: var(--accent-hover);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.25);
  padding: 0.75rem 1.5rem;
}

.btn--outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn--lg {
  padding: 1rem 1.75rem;
  font-size: 1.05rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(12, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, box-shadow 0.3s;
}

.header--scrolled {
  background: rgba(12, 15, 20, 0.95);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.25rem;
}

.logo__img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 8px;
  flex-shrink: 0;
}

.logo__text span {
  color: var(--accent);
}

.nav {
  display: flex;
  gap: 1.75rem;
}

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--text);
}

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

.header__phone {
  font-weight: 600;
  font-size: 0.95rem;
  display: none;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.burger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger.is-open span:nth-child(2) {
  opacity: 0;
}

.burger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(59, 130, 246, 0.15), transparent),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(240, 165, 0, 0.08), transparent),
    linear-gradient(180deg, #0c0f14 0%, #121820 100%);
  z-index: 0;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero__badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(240, 165, 0, 0.12);
  border: 1px solid rgba(240, 165, 0, 0.25);
  padding: 0.4rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero__lead {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 580px;
  margin-bottom: 2rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.hero__stats li {
  display: flex;
  flex-direction: column;
}

.hero__stats strong {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.hero__stats span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section--dark {
  background: var(--bg-card);
}

.section--muted {
  background: var(--bg-muted);
  color: var(--text-dark);
}

.section--muted .section__label {
  color: var(--primary);
}

.section--muted .section__head p {
  color: var(--text-dark-muted);
}

.section__head {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 3rem;
}

.section__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section__head h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section--muted .section__head h2 {
  color: var(--text-dark);
}

.section__head p {
  color: var(--text-muted);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
}

.service-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}

.service-card--featured {
  border-color: rgba(240, 165, 0, 0.35);
  background: linear-gradient(145deg, rgba(240, 165, 0, 0.06), var(--bg-card));
}

.service-card--featured:hover {
  border-color: rgba(240, 165, 0, 0.6);
}

.service-card__icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.service-card__icon--svg {
  color: var(--accent);
  line-height: 0;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.service-card__price {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

/* Remotes */
.remotes {
  max-width: 720px;
}

.remotes__text h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.remotes__text > p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.remotes__list {
  margin-bottom: 2rem;
}

.remotes__list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.remotes__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.remotes__list strong {
  display: block;
  color: var(--text);
  margin-bottom: 0.15rem;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.step__num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: rgba(59, 130, 246, 0.35);
  line-height: 1;
  margin-bottom: 1rem;
}

.step h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.feature {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: 0 2px 12px rgba(26, 34, 48, 0.06);
}

.feature h3 {
  font-size: 1.05rem;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.feature p {
  font-size: 0.9rem;
  color: var(--text-dark-muted);
}

/* Reviews */
.reviews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.review {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.review p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-style: italic;
}

.review footer {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

/* FAQ */
.faq {
  max-width: 720px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--border);
  padding: 0.25rem 0;
}

.faq__item summary {
  font-weight: 600;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--accent);
  font-weight: 400;
  transition: transform 0.2s;
}

.faq__item[open] summary::after {
  content: '−';
}

.faq__item p {
  padding-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* CTA Banner */
.cta-banner {
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--primary) 0%, #1d4ed8 100%);
}

.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.cta-banner h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.cta-banner p {
  opacity: 0.9;
}

/* Footer */
.footer {
  padding: 4rem 0 0;
  border-top: 1px solid var(--border);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 3rem;
}

.footer__brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 280px;
}

.footer h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer__links li {
  margin-bottom: 0.5rem;
}

.footer__links a {
  font-size: 0.95rem;
  color: var(--text);
  transition: color 0.2s;
}

.footer__links a:hover {
  color: var(--accent);
}

.footer__schedule {
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer__bottom {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer__bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Float call */
.float-call {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 90;
  width: 56px;
  height: 56px;
  background: var(--accent);
  color: var(--text-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: transform 0.2s, background 0.2s;
}

.float-call:hover {
  transform: scale(1.08);
  background: var(--accent-hover);
}

/* Mobile nav */
@media (max-width: 900px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s, opacity 0.3s;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 1rem;
  }

  .burger {
    display: flex;
  }

  .header__phone {
    display: none;
  }

  .header__actions .btn--sm {
    display: none;
  }

  .steps {
    grid-template-columns: 1fr 1fr;
  }

  .features {
    grid-template-columns: 1fr 1fr;
  }

  .reviews {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .steps {
    grid-template-columns: 1fr;
  }

  .features {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .cta-banner__inner {
    flex-direction: column;
    text-align: center;
  }

  .hero__cta .btn {
    width: 100%;
  }
}

@media (min-width: 901px) {
  .header__phone {
    display: block;
  }
}