/* chrome-data.com.cn root — dark editorial portal */
:root {
  --ink: #e7edf6;
  --muted: #9aa8bc;
  --paper: #0c1624;
  --panel: #142338;
  --line: #24344c;
  --gold: #d4a017;
  --blue: #5b9dff;
  --deep: #070d16;
}

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

html { scroll-behavior: auto; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

a { color: var(--blue); text-decoration: none; }
a:hover { color: #8bb6ff; }

.wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  background: var(--deep);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: inline-block;
  padding: 8px 14px;
  color: var(--muted);
  border: 1px solid transparent;
}

.nav-links a:hover,
.nav-links a.current {
  color: var(--ink);
  border-color: var(--gold);
}

.hero {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 36px;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0 28px;
}

.kicker {
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  margin: 0 0 10px;
}

h1, h2, h3 { line-height: 1.25; margin: 0 0 14px; }
h1 { font-size: clamp(1.8rem, 3vw, 2.5rem); }
h2 { font-size: 1.55rem; }
.lead { font-size: 1.08rem; color: #d5deea; }

.hero-panel .panel-box {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 22px;
}

.panel-note { color: var(--muted); font-size: 0.95rem; }

.dl-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 12px;
  background: var(--gold);
  color: #1a1203;
  font-weight: 700;
  text-align: center;
}

.btn:hover { background: #efb82a; color: #1a1203; }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost:hover { border-color: var(--gold); color: var(--ink); }

.section { padding: 42px 0; border-top: 1px solid var(--line); }
.section-intro { color: var(--muted); }

.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 22px 0;
}

.card, .quote, .stat, .faq, .compare {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 20px;
}

.icon-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.quotes, .stats, .faq-list {
  display: grid;
  gap: 16px;
}

.quotes { grid-template-columns: 1fr 1fr; }
.stats { grid-template-columns: repeat(4, 1fr); margin: 20px 0; }
.stat strong { display: block; font-size: 1.6rem; color: var(--gold); }
.faq-list { grid-template-columns: 1fr 1fr; }
.compare table { width: 100%; border-collapse: collapse; }
.compare th, .compare td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 10px 8px;
  vertical-align: top;
}

.cta-band {
  background: #101c2e;
  padding: 28px;
  border: 1px dashed var(--gold);
  margin-top: 18px;
}

.site-footer {
  background: var(--deep);
  border-top: 1px solid var(--line);
  padding: 28px 0 36px;
  color: var(--muted);
  font-size: 0.95rem;
}

.foot-nav { display: flex; gap: 16px; margin: 12px 0; }
.safety { color: #c9d4e4; }

@media (max-width: 900px) {
  .hero, .cards-3, .quotes, .stats, .faq-list, .dl-grid {
    grid-template-columns: 1fr;
  }
  .nav-bar { flex-wrap: wrap; padding: 10px 0; }
}