:root {
  --red: #d71920;
  --red-dark: #a90f18;
  --ink: #15171a;
  --text: #3d4248;
  --muted: #6f7782;
  --line: #e6e8ec;
  --soft: #f5f7fa;
  --shadow: 0 14px 40px rgba(20, 24, 31, .08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
}
.brand img {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  object-fit: contain;
  border: 1px solid var(--line);
  background: #fff;
}
.brand-name {
  font-size: 20px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: .04em;
  line-height: 1.2;
}
.brand-sub { color: var(--muted); font-size: 12px; margin-top: 4px; }
nav { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--ink); }
nav a { padding: 26px 0; border-bottom: 2px solid transparent; }
nav a:hover, nav a.active { color: var(--red); border-bottom-color: var(--red); }
.phone { color: var(--red); font-weight: 800; white-space: nowrap; }
.page-hero {
  background: linear-gradient(135deg, #15171a 0%, #261014 100%);
  color: #fff;
  padding: 74px 0;
}
.crumb { color: rgba(255,255,255,.52); font-size: 13px; margin-bottom: 20px; }
.page-hero h1 { font-size: 42px; line-height: 1.22; margin-bottom: 14px; }
.page-hero p { max-width: 650px; color: rgba(255,255,255,.68); font-size: 16px; }
.section { padding: 72px 0; }
.section-soft { background: var(--soft); }
.section-title { margin-bottom: 30px; }
.section-title small {
  display: block;
  color: var(--red);
  font-weight: 800;
  letter-spacing: .14em;
  margin-bottom: 8px;
}
.section-title h2 { color: var(--ink); font-size: 32px; line-height: 1.25; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
  box-shadow: 0 8px 26px rgba(10,12,16,.04);
}
.card h3 { color: var(--ink); font-size: 20px; margin-bottom: 10px; }
.card p, .card li { color: var(--muted); font-size: 14px; }
.card ul { display: grid; gap: 8px; padding-left: 18px; }
.card li { list-style: disc; }
.card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 18px;
}
.product-photo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.product-photo {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.product-photo img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  margin: 0;
  border-radius: 0;
}
.product-photo b {
  display: block;
  color: var(--ink);
  padding: 14px 16px 2px;
}
.product-photo span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  padding: 0 16px 16px;
}
.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}
.muted-note {
  color: var(--muted);
  font-size: 13px;
  margin-top: 10px;
}
.map-panel {
  min-height: 300px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(215,25,32,.08) 1px, transparent 1px),
    linear-gradient(rgba(215,25,32,.08) 1px, transparent 1px),
    radial-gradient(circle at 52% 48%, rgba(215,25,32,.18), transparent 18%),
    #f7f8fa;
  background-size: 44px 44px, 44px 44px, auto, auto;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 28px;
}
.map-pin {
  width: 74px;
  height: 74px;
  border-radius: 50% 50% 50% 10%;
  transform: rotate(-45deg);
  background: var(--red);
  margin: 0 auto 24px;
  position: relative;
  box-shadow: 0 18px 40px rgba(215,25,32,.28);
}
.map-pin::after {
  content: "";
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  inset: 25px;
}
.map-panel h3, .map-panel p { transform: none; }
.copy-box {
  background: #fff;
  border: 1px dashed rgba(215,25,32,.45);
  border-radius: 8px;
  padding: 20px;
  color: var(--text);
  white-space: pre-line;
  font-size: 14px;
}
.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.mini-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}
.mini-card b {
  color: var(--ink);
  display: block;
  margin-bottom: 6px;
}
.mini-card span {
  color: var(--muted);
  font-size: 14px;
}
.num {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #fff0f1;
  color: var(--red);
  font-weight: 900;
  margin-bottom: 18px;
}
.table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.table th, .table td { border-bottom: 1px solid var(--line); padding: 16px; text-align: left; }
.table th { color: var(--ink); background: #fafbfc; }
.table td { color: var(--muted); }
.contact-band {
  background: linear-gradient(135deg, #15171a, #2b1014);
  color: #fff;
  padding: 52px 0;
}
.contact-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 700;
  background: var(--red);
  color: #fff;
}
.btn:hover { background: var(--red-dark); }
.btn-outline {
  background: #fff;
  color: var(--red);
  border: 1px solid rgba(215,25,32,.28);
}
.btn-outline:hover {
  background: #fff5f5;
  color: var(--red-dark);
}
footer {
  background: #0f1114;
  color: rgba(255,255,255,.54);
  padding: 36px 0;
  font-size: 13px;
}
.footer-inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-inner b { color: #fff; }
.mobile-sticky { display: none; }
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .product-photo-grid { grid-template-columns: repeat(2, 1fr); }
  .mini-grid { grid-template-columns: 1fr; }
  .contact-band .container { display: block; }
  .contact-band .btn { margin-top: 18px; }
}
@media (max-width: 720px) {
  .header-inner { height: auto; min-height: 68px; align-items: flex-start; padding-top: 12px; padding-bottom: 12px; }
  .brand { min-width: 0; }
  .brand-sub, .phone { display: none; }
  nav { gap: 13px; flex-wrap: wrap; justify-content: flex-end; font-size: 13px; }
  nav a { padding: 0; border-bottom: 0; }
  .page-hero { padding: 48px 0; }
  .page-hero h1 { font-size: 31px; }
  .section { padding: 52px 0; }
  .table { display: block; overflow-x: auto; }
  .product-photo-grid { grid-template-columns: 1fr; }
  .mobile-sticky {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: #fff;
    border-top: 1px solid var(--line);
    box-shadow: 0 -8px 24px rgba(10,12,16,.12);
  }
  .mobile-sticky a {
    min-height: 52px;
    display: grid;
    place-items: center;
    font-weight: 800;
    color: var(--ink);
    border-right: 1px solid var(--line);
  }
  .mobile-sticky a:last-child {
    border-right: 0;
    background: var(--red);
    color: #fff;
  }
  body { padding-bottom: 52px; }
}