:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #17221d;
  background: #f7f7f2;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; overflow-x: hidden; line-height: 1.7; }
a { color: #15533c; font-weight: 650; text-decoration: none; }
.site-header { width: min(1080px, calc(100% - 40px)); margin: 0 auto; min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid #dfe3dc; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 21px; }
.brand img { width: 38px; height: 38px; border-radius: 7px; }
nav { display: flex; flex-wrap: wrap; gap: 24px; }
main { width: min(1080px, calc(100% - 40px)); margin: 0 auto; }
.hero { min-height: 610px; padding: 68px 0 54px; display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(280px, .62fr); align-items: center; gap: 64px; overflow: hidden; }
.hero-copy { min-width: 0; }
.hero-brand { display: flex; align-items: center; gap: 12px; color: #173d30; font-size: 22px; font-weight: 800; }
.hero-brand img { width: 58px; height: 58px; border-radius: 11px; }
.hero-visual { align-self: end; height: 540px; overflow: hidden; border: 1px solid #dfe3dc; border-bottom: 0; border-radius: 28px 28px 0 0; background: #fff; box-shadow: 0 24px 60px rgba(28, 57, 45, .12); }
.hero-visual img { display: block; width: 100%; height: auto; }
.eyebrow { margin: 22px 0 10px; color: #43715f; font-size: 15px; font-weight: 750; }
h1 { margin: 0; color: #15533c; font-size: clamp(44px, 8vw, 76px); line-height: 1.1; letter-spacing: 0; }
h2 { margin: 0 0 28px; color: #173d30; font-size: clamp(30px, 5vw, 44px); line-height: 1.2; letter-spacing: 0; }
h3 { margin: 0 0 8px; font-size: 20px; }
p { color: #5d655f; }
.lead { max-width: 720px; margin: 24px 0 0; overflow-wrap: anywhere; font-size: 21px; }
.actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 34px; }
.actions a { min-height: 48px; display: inline-flex; align-items: center; padding: 0 22px; border: 1px solid #bfc9c1; border-radius: 6px; }
.actions .primary { color: #fff; background: #15533c; border-color: #15533c; }
.download-meta { margin: 14px 0 0; color: #7a827d; font-size: 14px; }
.trust-band { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid #dfe3dc; border-bottom: 1px solid #dfe3dc; }
.trust-band div { min-height: 112px; padding: 24px 22px; display: grid; align-content: center; gap: 3px; border-right: 1px solid #dfe3dc; }
.trust-band div:last-child { border-right: 0; }
.trust-band strong { color: #173d30; font-size: 17px; }
.trust-band span { color: #68716b; font-size: 14px; }
.download-band { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 48px; padding: 54px 0; border-top: 1px solid #dfe3dc; border-bottom: 1px solid #dfe3dc; }
.download-copy { max-width: 680px; }
.download-copy .eyebrow { margin-top: 0; }
.download-copy h2 { margin-bottom: 16px; }
.download-copy p { margin: 0 0 18px; font-size: 16px; }
.download-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
.download-options > div { padding-top: 20px; border-top: 1px solid #cfd6d0; }
.download-options strong { display: block; margin-bottom: 8px; color: #173d30; font-size: 19px; }
.download-link { min-height: 46px; display: inline-flex; align-items: center; padding: 0 20px; color: #fff; background: #15533c; border-radius: 6px; }
.download-link.secondary { color: #173d30; background: #eef1ec; border: 1px solid #cdd5ce; }
.qr-link { display: grid; justify-items: center; gap: 10px; color: #173d30; font-size: 14px; }
.qr-link img { width: 180px; height: 180px; padding: 8px; background: #fff; border: 1px solid #dfe3dc; border-radius: 8px; }
.section { padding: 72px 0; border-top: 1px solid #dfe3dc; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: #dfe3dc; border: 1px solid #dfe3dc; border-radius: 8px; overflow: hidden; }
.feature-grid article { min-height: 180px; padding: 30px; background: #fff; }
.feature-grid p { margin: 0; }
.process ol { list-style: none; margin: 0; padding: 0; border-top: 1px solid #dfe3dc; }
.process li { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid #dfe3dc; }
.process span { color: #5d655f; }
.safety { border-top: 0; }
.safety .lead { margin-bottom: 38px; }
.safety-list { border-top: 1px solid #dfe3dc; }
.safety-list p { margin: 0; padding: 22px 0; display: grid; grid-template-columns: 220px 1fr; gap: 28px; border-bottom: 1px solid #dfe3dc; }
.safety-list strong { color: #173d30; }
.safety-list span { color: #5d655f; }
.prose { width: min(760px, 100%); padding: 60px 0 90px; }
.prose h1 { font-size: clamp(38px, 7vw, 56px); }
.prose h2 { margin-top: 42px; font-size: 26px; }
.prose p, .prose li { font-size: 17px; }
.prose ul { padding-left: 22px; }
.contact-list { margin: 28px 0; padding: 0; list-style: none; }
.contact-list li { padding: 14px 0; border-bottom: 1px solid #dfe3dc; }
footer { width: min(1080px, calc(100% - 40px)); margin: 0 auto; padding: 32px 0 48px; border-top: 1px solid #dfe3dc; display: flex; flex-wrap: wrap; gap: 18px 28px; color: #68716b; }
footer span { margin-right: auto; font-weight: 750; color: #173d30; }
footer .filing { flex-basis: 100%; text-align: center; color: #777; font-size: 12px; font-weight: 400; line-height: 1.6; }
footer .filing:hover { color: #555; text-decoration: underline; }
@media (max-width: 640px) {
  .site-header { align-items: center; gap: 10px; padding: 18px 0; }
  .site-header .brand { gap: 7px; font-size: 18px; }
  .site-header .brand img { width: 32px; height: 32px; }
  .site-header nav { min-width: 0; justify-content: flex-end; gap: 8px 12px; font-size: 13px; }
  .site-header nav a:nth-child(2) { display: none; }
  h1 { max-width: 100%; overflow-wrap: anywhere; font-size: 36px; line-height: 1.18; }
  .lead { max-width: 100%; font-size: 18px; }
  .hero { min-height: auto; padding: 46px 0 0; grid-template-columns: 1fr; gap: 42px; }
  .hero-brand { font-size: 19px; }
  .hero-brand img { width: 50px; height: 50px; }
  .hero-visual { width: min(360px, 90%); height: 370px; justify-self: center; border-radius: 22px 22px 0 0; }
  .trust-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trust-band div { min-height: 100px; border-bottom: 1px solid #dfe3dc; }
  .trust-band div:nth-child(2n) { border-right: 0; }
  .trust-band div:nth-last-child(-n+2) { border-bottom: 0; }
  .download-band { grid-template-columns: 1fr; gap: 30px; }
  .download-options { grid-template-columns: 1fr; gap: 26px; }
  .qr-link { justify-self: start; }
  .feature-grid { grid-template-columns: 1fr; }
  .process li { grid-template-columns: 1fr; gap: 4px; }
  .safety-list p { grid-template-columns: 1fr; gap: 5px; }
  footer span { flex-basis: 100%; }
}
@media (max-width: 360px) {
  h1 { font-size: 34px; }
}