:root {
  color-scheme: light;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: #173c44;
  background: #f5f8f6;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: #087969; text-underline-offset: 3px; }
a:hover { color: #085e55; }

.site-header, main, .site-footer {
  width: min(100% - 40px, 960px);
  margin-inline: auto;
}
.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { color: #123f43; font-size: 20px; font-weight: 700; text-decoration: none; }
.header-link { font-size: 14px; }
.intro {
  padding: clamp(38px, 7vw, 76px);
  border-radius: 28px;
  background: linear-gradient(125deg, #e8f6ee, #fffdf8 72%);
}
.eyebrow, .step { color: #07816e; font-size: 13px; font-weight: 700; letter-spacing: .05em; }
h1 { max-width: 780px; margin: 16px 0 20px; font-size: clamp(34px, 5vw, 54px); line-height: 1.22; }
.lead { max-width: 760px; font-size: clamp(17px, 2vw, 19px); line-height: 1.85; }
.primary-link {
  display: inline-block;
  margin-top: 18px;
  padding: 14px 22px;
  border-radius: 99px;
  background: #118b7a;
  color: white;
  font-weight: 700;
  text-decoration: none;
}
.primary-link:hover { color: white; background: #086f63; }
.guide { display: grid; gap: 16px; margin: 30px 0; }
.guide section, .faq { padding: clamp(25px, 4vw, 42px); border: 1px solid #dce9e2; border-radius: 22px; background: white; }
h2 { margin: 12px 0 15px; font-size: clamp(24px, 3vw, 30px); line-height: 1.3; }
.guide p, .faq p { margin: 0 0 14px; color: #466265; font-size: 16px; line-height: 1.9; }
.guide p:last-child, .faq p:last-child { margin-bottom: 0; }
.faq { margin-bottom: 36px; }
.faq h2 { margin-top: 0; }
.faq h3 { margin: 24px 0 8px; font-size: 18px; }
.site-footer { display: flex; flex-wrap: wrap; gap: 12px 24px; padding: 28px 0 42px; border-top: 1px solid #dce9e2; font-size: 13px; }

@media (max-width: 600px) {
  .site-header, main, .site-footer { width: min(100% - 28px, 960px); }
  .site-header { min-height: 66px; }
  .brand { font-size: 17px; }
  .header-link { font-size: 12px; }
  .intro { border-radius: 18px; }
  .guide section, .faq { border-radius: 16px; }
  .guide p, .faq p { font-size: 15px; }
}