:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  color: #172d3a;
  background: #f5f7fa;
  line-height: 1.6;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid #137a70; outline-offset: 6px; }
.container { max-width: 1120px; padding: 36px 32px; margin: auto; }
.topbar, .section-heading, .card-top, .card-bottom, footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { font-size: 22px; font-weight: 750; }
.brand span { font-size: 14px; color: #71808b; font-weight: 400; margin-left: 12px; }
.badge, .status { border-radius: 30px; font-size: 12px; padding: 5px 12px; background: #e3efeb; color: #286c5a; }
.intro { padding: 82px 0 60px; }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 3px; color: #137a70; }
h1 { font-size: clamp(36px, 6vw, 58px); line-height: 1.25; letter-spacing: -2px; margin: 18px 0; }
.description { color: #657581; max-width: 540px; }
.section-heading { margin-bottom: 22px; }
h2 { font-size: 20px; margin: 0; }
.section-heading > span { font-size: 13px; color: #71808b; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 340px)); gap: 24px; }
.tool-card { display: block; border: 1px solid #e1e7ed; background: white; border-radius: 20px; padding: 26px; transition: transform .18s, box-shadow .18s; }
.tool-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px #172d3a0c; }
.tool-icon { width: 48px; height: 48px; display: grid; place-items: center; background: #e9f3f0; color: #137a70; border-radius: 14px; font-size: 36px; }
h3 { font-size: 22px; margin: 24px 0 8px; }
.tool-card p { font-size: 14px; color: #657581; margin: 0 0 28px; }
.card-bottom { border-top: 1px solid #edf0f3; padding-top: 18px; font-size: 13px; color: #137a70; }
.card-bottom > span:first-child { color: #82909a; }
footer { border-top: 1px solid #e1e7ed; margin-top: 90px; padding-top: 22px; font-size: 12px; color: #82909a; }
.placeholder { max-width: 680px; margin: 90px auto; padding: 44px; background: white; border: 1px solid #e1e7ed; border-radius: 24px; }
.placeholder h1 { font-size: 38px; letter-spacing: -1px; }
.placeholder p { color: #657581; }
.placeholder .address { padding: 14px 16px; background: #f5f7fa; border-radius: 10px; font-size: 14px; overflow-wrap: anywhere; }
.button { display: inline-block; background: #137a70; color: white; border-radius: 10px; padding: 11px 20px; margin-top: 22px; }
@media (max-width: 600px) {
  .container { padding: 24px; }
  .brand span { display: none; }
  .intro { padding: 56px 0 40px; }
  .tool-grid { grid-template-columns: 1fr; }
  .placeholder { margin: 48px 0; padding: 28px; }
  footer { align-items: flex-start; flex-direction: column; gap: 4px; margin-top: 60px; }
}
@media (prefers-reduced-motion: reduce) {
  .tool-card { transition: none; }
}