:root {
  --font-sans: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --ink: #0a1730;
  --muted: #66758b;
  --line: rgba(14, 42, 76, .13);
  --paper: #f5f7fa;
  --white: #fff;
  --blue: #1464f4;
  --radius: 30px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.city-preview { margin: 0; padding-top: 92px; background: var(--paper); color: var(--ink); font-family: var(--font-sans); -webkit-font-smoothing: antialiased; }
.city-preview a { color: inherit; }
.city-main { overflow: hidden; }
.city-shell { width: min(1200px, calc(100% - 40px)); margin: auto; }
.city-crumb { display: flex; align-items: center; gap: 10px; padding: 20px 0; color: #7c899b; font-size: 13px; }
.city-crumb a { text-decoration: none; }
.city-crumb i { color: #c1c8d2; font-style: normal; }
.city-crumb strong { color: #27354b; }
.city-eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 16px; color: var(--accent, var(--blue)); font-size: 12px; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
.city-eyebrow::before { width: 30px; height: 2px; background: currentColor; content: ""; }
.city-section { position: relative; padding: clamp(78px, 8vw, 128px) 0; }
.city-section-head { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); align-items: end; gap: 48px; margin-bottom: 46px; }
.city-section h2 { margin: 0; font-size: clamp(36px, 5vw, 68px); line-height: 1.08; letter-spacing: -.055em; }
.city-section-copy { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.city-ad { padding: 30px 20px; background: #eef2f6; }
.city-ad.is-dark { background: #071426; }
.city-ad-inner { width: min(1200px, 100%); margin: auto; overflow: hidden; border-radius: 28px; box-shadow: 0 26px 80px rgba(12, 34, 65, .14); }
.city-ad img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 1; object-fit: contain; background: #fff; }
.city-ad small { display: none; }
.service-standard { background: #fff; }
.standard-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.standard-card { min-height: 300px; padding: 32px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.standard-card h3 { margin: 64px 0 14px; font-size: 25px; line-height: 1.25; }
.standard-card p { margin: 0; color: #718096; font-size: 14px; line-height: 1.8; }
.city-articles { background: #f1f4f8; }
.city-faq { background: #fff; }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 25px 0; cursor: pointer; list-style: none; font-size: 18px; font-weight: 850; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list details p { color: #69798d; line-height: 1.85; }
.city-final { padding: 68px 0; background: #0b1730; color: #fff; }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .72s ease, transform .72s cubic-bezier(.22, 1, .36, 1); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (max-width: 1080px) {
  .standard-grid { grid-template-columns: repeat(2, 1fr); }
  .city-section-head { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  body.city-preview { padding-top: 68px; }
  .city-shell { width: min(calc(100% - 28px), 1200px); }
  .city-section { padding: 70px 0; }
  .city-section h2 { font-size: 39px; }
  .city-section-head { gap: 20px; margin-bottom: 30px; }
  .city-ad { padding: 18px 10px; }
  .city-ad-inner { border-radius: 18px; }
  .city-ad img { aspect-ratio: auto; }
  .standard-grid { grid-template-columns: 1fr; }
  .standard-card { min-height: 250px; padding: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}