* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #333;
  background: #f6f7f9;
  line-height: 1.8;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.site-header {
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo-area img { height: 58px; width: auto; }
.main-nav ul {
  display: flex;
  list-style: none;
  gap: 8px;
  flex-wrap: wrap;
}
.main-nav a {
  padding: 8px 14px;
  border-radius: 6px;
  color: #444;
  font-size: 14px;
}
.main-nav a:hover, .main-nav a.active {
  background: #f2f4f7;
  color: #e85d22;
}
.hero {
  background: linear-gradient(180deg, #fff 0%, #fafafa 100%);
  padding: 56px 0 42px;
}
.hero-card {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 10px;
  padding: 42px 36px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.04);
}
.hero h1 {
  font-size: 30px;
  color: #222;
  margin-bottom: 12px;
}
.hero p {
  color: #666;
  font-size: 15px;
  max-width: 760px;
}
.section {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 10px;
  padding: 34px 32px;
  margin: 18px auto;
}
.section h2 {
  font-size: 20px;
  color: #222;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid #f0f0f0;
}
.section p, .section li {
  font-size: 14.5px;
  color: #555;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.card {
  background: #fafbfc;
  border: 1px solid #edf0f2;
  border-left: 4px solid #e85d22;
  border-radius: 8px;
  padding: 18px 16px;
}
.card h3 {
  font-size: 16px;
  color: #222;
  margin-bottom: 6px;
}
.card p { color: #666; font-size: 13.5px; }
.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  list-style: none;
}
.flow li {
  background: #fafbfc;
  border: 1px solid #edf0f2;
  border-radius: 8px;
  padding: 16px 14px;
  text-align: center;
}
.flow .num {
  width: 30px;
  height: 30px;
  line-height: 30px;
  border-radius: 50%;
  display: inline-block;
  color: #fff;
  background: #e85d22;
  font-weight: 700;
  margin-bottom: 8px;
}
.note {
  background: #fafbfc;
  border-left: 4px solid #c0392b;
  padding: 14px 16px;
  border-radius: 6px;
}
.site-footer {
  margin-top: 18px;
  background: #fff;
  border-top: 1px solid #e8e8e8;
  text-align: center;
  padding: 28px 20px 38px;
  color: #8a8a8a;
  font-size: 13px;
  line-height: 2;
}
.site-footer .beian a {
  color: #8a8a8a;
  text-decoration: underline;
}
.site-footer .beian a:hover { color: #e85d22; }
.list {
  padding-left: 18px;
}
.list li { margin-bottom: 8px; }
@media (max-width: 768px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .logo-area img { height: 50px; }
  .grid-2, .flow { grid-template-columns: 1fr; }
  .hero-card, .section { padding: 24px 20px; }
  .hero h1 { font-size: 24px; }
}