:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #101828;
  --muted: #667085;
  --line: #e4e7ec;
  --primary: #1663ff;
  --primary-dark: #0b4ad6;
  --shadow: 0 18px 50px rgba(16,24,40,.08);
  --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(800px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 10; backdrop-filter: blur(18px);
  background: rgba(255,255,255,.78); border-bottom: 1px solid rgba(228,231,236,.8);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px 0; }
.logo { display:flex; align-items:center; gap:12px; font-weight:800; letter-spacing:-.02em; }
.logo img { width: 42px; height: 42px; }
.nav { display:flex; gap:24px; color: var(--muted); font-weight: 600; }
.nav a:hover { color: var(--text); }
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding: 14px 22px; border-radius: 999px; font-weight: 700; transition: .2s ease;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 14px 30px rgba(22,99,255,.22); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-secondary { background: #edf3ff; color: var(--primary); }
.hero { padding: 72px 0 36px; }
.hero-grid, .split-grid, .form-layout { display:grid; grid-template-columns: 1.1fr .9fr; gap: 42px; align-items: center; }
.hero h1, .page-hero h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); line-height: 1.02; letter-spacing: -.04em; margin: 0 0 18px; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 60ch; }
.eyebrow {
  display:inline-flex; margin-bottom: 14px; padding: 8px 14px; border-radius:999px; background:#eef4ff;
  color:var(--primary); font-weight:800; font-size:.84rem; letter-spacing:.04em; text-transform:uppercase;
}
.hero-actions { display:flex; gap:14px; flex-wrap: wrap; margin: 28px 0 22px; }
.mini-points { padding: 0; margin: 0; list-style: none; display:flex; flex-wrap: wrap; gap: 12px; color: var(--muted); font-weight: 600; }
.mini-points li { background: #fff; border:1px solid var(--line); border-radius:999px; padding:10px 14px; }
.hero-card, .info-box, .feature-card, .catalog-card, .gallery-card, .thanks-card, .contact-form {
  background: var(--surface); border: 1px solid rgba(228,231,236,.9); border-radius: var(--radius); box-shadow: var(--shadow);
}
.hero-card { padding: 24px; }
.section { padding: 72px 0; }
.section.alt { background: rgba(240,244,248,.65); border-top: 1px solid rgba(228,231,236,.7); border-bottom: 1px solid rgba(228,231,236,.7); }
.section-head { margin-bottom: 30px; max-width: 760px; }
.section-head h2, .split-grid h2, .text-block h2, .cta-banner h2 { font-size: clamp(1.8rem, 3vw, 3rem); line-height: 1.1; letter-spacing: -.03em; margin: 0 0 14px; }
.section-head p, .text-block p, .split-grid p, .cta-banner p { color: var(--muted); }
.feature-grid, .catalog-grid, .gallery-grid { display:grid; gap: 22px; }
.feature-grid { grid-template-columns: repeat(3, 1fr); }
.catalog-grid { grid-template-columns: repeat(4, 1fr); }
.gallery-grid { grid-template-columns: repeat(3, 1fr); }
.feature-card, .catalog-card, .gallery-card { padding: 24px; }
.catalog-card img, .gallery-card img { border-radius: 18px; margin-bottom: 18px; border:1px solid var(--line); background:#f8fafc; }
.catalog-card h3, .feature-card h3, .gallery-card h3, .info-box h3 { margin-top: 0; margin-bottom: 8px; letter-spacing: -.02em; }
.catalog-card p, .feature-card p, .gallery-card p, .info-box p { color: var(--muted); margin: 0; }
.catalog-card:hover, .feature-card:hover, .gallery-card:hover { transform: translateY(-3px); transition: .2s ease; }
.steps { display:grid; gap: 16px; }
.steps div { display:flex; gap:16px; align-items:flex-start; padding:18px; background:#fff; border-radius:20px; border:1px solid var(--line); }
.steps span { min-width:40px; height:40px; display:grid; place-items:center; border-radius:50%; background: var(--primary); color:#fff; font-weight:800; }
.material-list, .check-list { padding-left: 20px; color: var(--muted); }
.cta-banner { display:flex; align-items:center; justify-content:space-between; gap: 28px; padding: 30px 34px; background:#0f172a; color:#fff; border-radius:32px; box-shadow: var(--shadow); }
.cta-banner p, .cta-banner a { color: rgba(255,255,255,.82); }
.page-main { padding-bottom: 30px; }
.page-hero { padding: 64px 0 18px; text-align: center; }
.text-block { max-width: 820px; }
.page-image { background:#fff; padding: 24px; border-radius:24px; border:1px solid var(--line); }
.form-layout { align-items: start; }
.contact-form { padding: 26px; display:grid; gap:16px; }
.contact-form label { display:grid; gap:8px; font-weight:700; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; border:1px solid var(--line); border-radius:16px; padding:14px 16px; font: inherit; color: var(--text); background:#fff;
}
.contact-form textarea { resize: vertical; }
.site-footer { padding: 34px 0 50px; }
.footer-grid { display:grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 24px; }
.footer-logo { margin-bottom: 10px; }
.site-footer p, .site-footer li, .site-footer a { color: var(--muted); }
.site-footer ul { list-style:none; padding:0; margin:0; display:grid; gap:10px; }
.thanks { min-height:100vh; display:grid; place-items:center; padding:24px; background: linear-gradient(180deg,#ffffff 0%,#eef4ff 100%); }
.thanks-card { max-width: 520px; padding: 34px; text-align:center; }
.thanks-card img { width: 72px; margin: 0 auto 20px; }
@media (max-width: 1040px) {
  .catalog-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .nav { display:none; }
  .hero-grid, .split-grid, .form-layout, .footer-grid, .feature-grid, .cta-banner { grid-template-columns: 1fr; }
  .cta-banner { text-align:left; }
}
@media (max-width: 640px) {
  .catalog-grid, .gallery-grid { grid-template-columns: 1fr; }
  .container { width: min(100% - 24px, 1160px); }
  .hero { padding-top: 42px; }
  .btn { width: 100%; }
  .hero-actions { display:grid; grid-template-columns: 1fr; }
  .nav-cta { display:none; }
}