:root {
  color: #162033;
  background: #f6f8fb;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(135deg, rgba(13, 92, 99, 0.12), transparent 34rem),
    linear-gradient(315deg, rgba(54, 83, 20, 0.1), transparent 30rem),
    #f6f8fb;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
  background: rgba(246, 248, 251, 0.86);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #162033;
  font-size: 16px;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: #0d5c63;
  color: #fff;
  box-shadow: 0 14px 28px rgba(13, 92, 99, 0.22);
}

.site-nav {
  display: flex;
  gap: 20px;
  color: #536275;
  font-size: 14px;
  font-weight: 800;
}

.site-nav a {
  text-decoration: none;
}

main,
.site-footer {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  align-items: center;
  gap: 48px;
  min-height: 620px;
  padding: 52px 0 72px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: #0d5c63;
  font-size: 14px;
  font-weight: 900;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  margin: 0;
  max-width: 760px;
  color: #101827;
  font-size: clamp(42px, 6vw, 70px);
  line-height: 1.06;
}

.lead {
  max-width: 680px;
  margin: 24px 0 0;
  color: #536275;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 900;
  text-decoration: none;
}

.button-primary {
  background: #0d5c63;
  color: #fff;
  box-shadow: 0 18px 36px rgba(13, 92, 99, 0.22);
}

.button-secondary {
  border: 1px solid #d7dee8;
  background: rgba(255, 255, 255, 0.9);
  color: #162033;
}

.mini-program-panel {
  position: relative;
  padding: 28px;
  border: 1px solid rgba(134, 147, 164, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 28px 70px rgba(19, 35, 55, 0.14);
  text-align: center;
}

.panel-label {
  display: inline-flex;
  margin-bottom: 18px;
  border-radius: 999px;
  padding: 7px 13px;
  background: #e6f2ef;
  color: #0d5c63;
  font-size: 13px;
  font-weight: 900;
}

.qr-box {
  width: min(300px, 100%);
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 8px;
  padding: 14px;
  background: #fff;
  box-shadow: inset 0 0 0 1px #e2e8f0, 0 18px 40px rgba(13, 92, 99, 0.12);
}

.qr-box img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 6px;
  object-fit: contain;
}

.mini-program-panel h2 {
  margin: 20px 0 8px;
  color: #101827;
  font-size: 34px;
}

.mini-program-panel p,
.section-copy,
.feature-card p,
.roadmap-item p,
.contact-section p {
  color: #536275;
  line-height: 1.8;
}

.mini-program-panel p {
  margin: 0 auto;
  max-width: 280px;
}

.section-block {
  margin-top: 28px;
  padding: 42px;
  border: 1px solid rgba(134, 147, 164, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 48px rgba(19, 35, 55, 0.08);
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: 36px;
}

.section-block h2,
.contact-section h2 {
  margin: 0;
  color: #101827;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.2;
}

.section-copy {
  margin: 18px 0 0;
}

.feature-grid,
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-card,
.roadmap-item,
.contact-card {
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #fbfcfe;
}

.feature-card {
  padding: 22px;
}

.feature-card span {
  display: inline-flex;
  border-radius: 999px;
  padding: 6px 11px;
  background: #eef2f7;
  color: #0d5c63;
  font-size: 13px;
  font-weight: 900;
}

.feature-card h3,
.roadmap-item strong {
  color: #162033;
}

.feature-card h3 {
  margin: 16px 0 8px;
  font-size: 20px;
}

.feature-card p,
.roadmap-item p {
  margin: 0;
}

.roadmap-section {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 32px;
  background: #102033;
}

.roadmap-section .section-kicker,
.roadmap-section h2,
.roadmap-item strong {
  color: #fff;
}

.roadmap-item {
  padding: 22px;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
}

.roadmap-item p {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.72);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 30px;
  align-items: center;
  margin-top: 28px;
  padding: 42px;
  border-radius: 8px;
  background: #eaf2ee;
}

.contact-card {
  display: grid;
  gap: 16px;
  padding: 22px;
  background: #fff;
}

.contact-card div {
  display: grid;
  gap: 6px;
}

.contact-card span {
  color: #64748b;
  font-size: 13px;
  font-weight: 900;
}

.contact-card a {
  color: #0d5c63;
  font-size: 20px;
  font-weight: 900;
  text-decoration: none;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 30px 0 42px;
  color: #64748b;
  font-size: 14px;
}

.site-footer a {
  text-decoration: none;
}

@media (max-width: 900px) {
  .site-header,
  main,
  .site-footer {
    width: min(100% - 28px, 720px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-section,
  .product-layout,
  .roadmap-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero-section {
    min-height: auto;
    padding: 34px 0 44px;
  }

  .feature-grid,
  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .section-block,
  .contact-section {
    padding: 28px;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .brand {
    white-space: normal;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .button {
    width: 100%;
  }
}