:root {
  --bg: #0d0f10;
  --panel: #15181a;
  --text: #ecebe6;
  --muted: #9aa0a4;
  --line: #2a2f32;
  --accent: #d9a441;
  --accent-hover: #e8b75a;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Manrope, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
h1, h2, h3 { margin: 0; letter-spacing: -0.04em; line-height: 1.12; }
p { margin: 0; }

.kicker {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.site-header,
.hero,
.price,
.services,
.specs,
.steps,
.faq,
.contact,
.site-footer {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.brand {
  font-size: 16px;
  font-weight: 800;
}
.brand b { color: var(--accent); }
.header-nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}
.header-nav a:hover { color: var(--text); }
.header-phone {
  padding: 10px 14px;
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 700;
}
.header-phone:hover { border-color: var(--accent); color: var(--accent); }

.hero {
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  gap: 64px;
  align-items: center;
  padding: 72px 0 80px;
}
.hero h1 {
  max-width: 14ch;
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 800;
}
.lead {
  max-width: 42ch;
  margin: 20px 0 28px;
  color: var(--muted);
  font-size: 18px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 800;
  transition: 0.2s ease;
}
.btn-primary {
  background: var(--accent);
  color: #141414;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost {
  border: 1px solid var(--line);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 28px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 14px;
  list-style: none;
}
.hero-facts li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-facts li::before {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  content: "";
}
.hero-photo {
  position: relative;
  margin: 0;
}
.hero-photo img {
  width: 100%;
  height: auto;
}
.hero-photo figcaption {
  position: absolute;
  right: 16px;
  bottom: 16px;
  color: #ecece8;
  font-size: 12px;
  font-weight: 700;
}

.price {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.price-item {
  padding: 28px 24px;
  border-right: 1px solid var(--line);
}
.price-item:first-child { padding-left: 0; }
.price-item span,
.price-note {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}
.price-item strong {
  display: block;
  margin-top: 8px;
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.04em;
}
.price-item small {
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}
.price-note {
  display: flex;
  align-items: center;
  padding-left: 24px;
  color: var(--accent);
}

.section-head { max-width: 620px; }
.section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
}
.section-head p:not(.kicker) {
  margin-top: 14px;
  color: var(--muted);
}

.services { padding: 96px 0; }
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 40px 0 0;
  padding: 0;
  background: var(--line);
  list-style: none;
}
.service-grid li {
  padding: 32px;
  background: var(--bg);
}
.service-grid h3 {
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: 800;
}
.service-grid p { color: var(--muted); }

.specs {
  padding: 56px 48px;
  background: var(--panel);
}
.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}
.spec-grid strong {
  display: block;
  color: var(--accent);
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.05em;
}
.spec-grid span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.steps { padding: 96px 0 40px; }
.step-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}
.step-list span {
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
}
.step-list h3 {
  margin: 10px 0 8px;
  font-size: 22px;
}
.step-list p { color: var(--muted); }

.faq { padding: 56px 0 40px; }
.faq-list { margin-top: 28px; max-width: 720px; }
.faq-list details {
  border-top: 1px solid var(--line);
}
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-size: 17px;
  font-weight: 700;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list p {
  padding: 0 0 18px;
  color: var(--muted);
}

.contact { padding: 72px 0 96px; }
.contact-phone {
  display: inline-block;
  margin-top: 28px;
  color: var(--accent);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.04em;
}
.contact-links {
  display: flex;
  gap: 10px;
  margin-top: 22px;
}
.contact-links a {
  padding: 12px 16px;
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 700;
}
.contact-links a:hover { border-color: var(--accent); color: var(--accent); }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.site-footer a { color: var(--accent); font-weight: 700; }
.mobile-bar { display: none; }

@media (max-width: 900px) {
  .header-nav { display: none; }
  .hero,
  .spec-grid,
  .step-list { grid-template-columns: 1fr; }
  .hero { gap: 36px; padding: 40px 0 56px; }
  .price { grid-template-columns: 1fr 1fr; }
  .price-item:nth-child(2) { border-right: 0; }
  .price-note {
    grid-column: 1 / -1;
    padding: 16px 0;
    border-top: 1px solid var(--line);
  }
  .service-grid { grid-template-columns: 1fr; }
  .specs { padding: 40px 24px; }
  .services, .steps, .contact { padding-top: 64px; padding-bottom: 48px; }
}

@media (max-width: 640px) {
  .site-header,
  .hero,
  .price,
  .services,
  .specs,
  .steps,
  .faq,
  .contact,
  .site-footer {
    width: min(calc(100% - 32px), var(--max));
  }
  .site-header { padding: 16px 0; }
  .header-phone { font-size: 13px; padding: 8px 10px; }
  .hero h1 { max-width: none; }
  .lead { font-size: 16px; }
  .hero-photo img { height: auto; }
  .price-item { padding: 20px 16px; }
  .price-item:first-child { padding-left: 16px; }
  .price-item strong { font-size: 26px; }
  .spec-grid strong { font-size: 28px; }
  .site-footer {
    display: grid;
    gap: 8px;
    padding-bottom: 92px;
  }
  .mobile-bar {
    position: fixed;
    z-index: 10;
    right: 12px;
    bottom: 12px;
    left: 12px;
    display: grid;
    grid-template-columns: 1.4fr 0.8fr;
    gap: 8px;
  }
  .mobile-bar a {
    display: grid;
    place-items: center;
    min-height: 48px;
    background: var(--accent);
    color: #141414;
    font-size: 14px;
    font-weight: 800;
  }
  .mobile-bar .ghost {
    background: var(--panel);
    border: 1px solid var(--line);
    color: var(--text);
  }
}