* { box-sizing: border-box; }
html, body { margin: 0; background: #fff; color: #1d1d1f; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.nav {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  height: 48px; padding: 0 22px;
  background: #fbfbfd;
  border-bottom: 1px solid rgba(0, 0, 0, .08);
}
.logo { font-size: 18px; font-weight: 600; text-decoration: none; letter-spacing: -0.02em; }
nav a { text-decoration: none; font-size: 12px; color: #1d1d1f; opacity: .8; margin-left: 24px; }
nav a[aria-current="page"] { opacity: 1; }
.hero { padding: 72px 24px 28px; text-align: center; }
.hero.tight { padding-bottom: 12px; }
h1 { margin: 0; font-size: 56px; line-height: 1.07; font-weight: 600; letter-spacing: -0.025em; }
h2 { margin: 0 0 8px; font-size: 28px; font-weight: 600; letter-spacing: -0.02em; }
.lede { margin: 14px auto 0; max-width: 640px; font-size: 21px; line-height: 1.4; color: #6e6e73; font-weight: 400; }
.lede.left { margin-left: 0; }
.band { background: #f5f5f7; padding: 28px 24px 48px; }
.grid { max-width: 1060px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
article { background: #fff; border-radius: 18px; padding: 32px 24px 28px; text-align: center; }
article p { margin: 0; color: #6e6e73; font-size: 15px; line-height: 1.5; }
.meta { margin-top: 14px !important; font-size: 13px !important; }
.btn {
  display: inline-block; margin-top: 18px;
  background: #0071e3; color: #fff; text-decoration: none;
  border-radius: 980px; padding: 9px 18px; font-size: 14px;
}
.btn.quiet { background: transparent; color: #0066cc; padding: 8px 8px; }
.note { max-width: 640px; margin: 28px auto 56px; padding: 0 24px; text-align: center; color: #6e6e73; font-size: 14px; }
.product { max-width: 980px; margin: 0 auto; padding: 72px 40px; }
.product.alt { background: #f5f5f7; max-width: none; padding-left: max(40px, calc((100% - 980px) / 2)); padding-right: max(40px, calc((100% - 980px) / 2)); }
.product.alt.slim { padding-top: 56px; padding-bottom: 80px; }
.wechat { text-align: center; }
.wechat .lede { margin-left: auto; margin-right: auto; }
.qr { width: min(280px, 72vw); height: auto; margin: 22px auto 0; display: block; background: #fff; border-radius: 16px; }
.kicker { margin: 0 0 8px; color: #6e6e73; font-size: 14px; }
.product ul { margin: 22px 0; padding: 0; list-style: none; }
.product li { padding: 10px 0; border-top: 1px solid #d2d2d7; font-size: 17px; line-height: 1.4; }
.mark { width: 84px; height: 84px; object-fit: cover; margin: 0 auto 14px; display: block; border-radius: 22px; background: #000; }
.price { margin: 8px 0 12px !important; color: #1d1d1f !important; font-size: 32px !important; font-weight: 600; letter-spacing: -0.02em; }
.focus { outline: 2px solid #1d1d1f; }
@media (max-width: 760px) {
  h1 { font-size: 36px; }
  .lede { font-size: 17px; }
  .grid { grid-template-columns: 1fr; }
  nav a { margin-left: 14px; }
  .hero { padding-top: 40px; }
}