:root {
  --bg: #161616;
  --panel: rgba(65, 65, 67, 0.42);
  --panel-strong: rgba(22, 22, 22, 0.88);
  --line: rgba(45, 227, 172, 0.18);
  --text: #f7f7f8;
  --muted: rgba(255, 255, 255, 0.66);
  --green: #2de3ac;
  --green-dark: #00b383;
  --green-soft: #53e8ad;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px max(16px, calc((100vw - 1120px) / 2));
  background: rgba(22, 22, 22, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.brand {
  color: var(--green-soft);
  font-size: 22px;
  font-weight: 800;
  text-decoration: none;
}
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.nav-links a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}
.nav-links a:hover { color: var(--green-soft); }
.page-hero {
  padding: 92px 0 72px;
  background:
    linear-gradient(90deg, rgba(22,22,22,0.98), rgba(22,22,22,0.9) 45%, rgba(3,51,38,0.62)),
    url("../images/banner.png") center / cover;
  border-bottom: 1px solid var(--line);
}
.page-hero.compact { padding: 86px 0 54px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  margin: 0 0 18px;
  padding: 7px 16px;
  border: 1px solid rgba(45, 227, 172, 0.24);
  border-radius: 999px;
  color: var(--green-soft);
  background: rgba(45, 227, 172, 0.1);
  font-size: 14px;
  letter-spacing: 1px;
}
h1 {
  margin: 0;
  max-width: 780px;
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.12;
  font-weight: 850;
  background: linear-gradient(135deg, #fff, var(--green-soft), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.25;
}
.lead {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(237.42deg, rgba(45, 227, 172, 1) 0%, rgba(0, 179, 131, 1) 99.73%);
  box-shadow: 0 8px 28px rgba(45, 227, 172, 0.24);
}
.btn-secondary {
  color: var(--green-soft);
  border: 1px solid var(--green);
  background: rgba(22, 22, 22, 0.32);
}
.qr-card {
  padding: 32px 28px 24px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
  text-align: center;
  box-shadow: 0 18px 56px rgba(0,0,0,0.34);
}
.qr-card img {
  width: min(220px, 100%);
  aspect-ratio: 1 / 1;
  height: auto;
  padding: 6px;
  border-radius: 12px;
  background: #fff;
}
.qr-card strong { display: block; margin-top: 14px; }
.qr-card span { display: block; margin-top: 7px; color: var(--green-soft); font-size: 13px; }
.section { padding: 64px 0; }
.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.content-panel,
.faq-panel,
.city-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 18px 46px rgba(0,0,0,0.22);
}
.content-panel { padding: 28px; }
.content-panel p,
.faq-panel p,
.city-card p {
  color: var(--muted);
  line-height: 1.8;
}
.check-list {
  display: grid;
  gap: 11px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}
.check-list li {
  color: var(--muted);
  padding-left: 22px;
  position: relative;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.tag-list span {
  color: var(--green-soft);
  border: 1px solid rgba(45, 227, 172, 0.26);
  border-radius: 999px;
  padding: 7px 12px;
  background: rgba(45, 227, 172, 0.08);
  font-size: 14px;
}
.nearby-title { margin: 26px 0 0; }
.faq-panel { padding: 30px; }
details {
  margin-top: 14px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
summary {
  cursor: pointer;
  color: var(--green-soft);
  font-weight: 700;
}
.city-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.city-card {
  display: block;
  min-height: 190px;
  padding: 24px;
  text-decoration: none;
  transition: transform .25s ease, border-color .25s ease;
}
.city-card:hover { transform: translateY(-4px); border-color: rgba(45, 227, 172, 0.42); }
.city-card strong { display: block; color: var(--green-soft); font-size: 21px; margin-bottom: 10px; }
.city-card span { display: block; color: #fff; margin-bottom: 12px; }
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 34px max(16px, calc((100vw - 1120px) / 2));
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #111;
}
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--green-soft); }
@media (max-width: 820px) {
  .site-nav { align-items: flex-start; flex-direction: column; }
  .hero-grid,
  .two-col,
  .city-grid { grid-template-columns: 1fr; }
  .page-hero { padding: 72px 0 52px; }
  .qr-card {
    max-width: 320px;
    padding: 28px 24px 22px;
  }
}