:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-strong: #0f1f3d;
  --text-primary: #10213f;
  --text-secondary: #4a5975;
  --brand: #1d68ff;
  --brand-strong: #1353d6;
  --accent: #00a9a5;
  --line: #d9e2f0;
  --shadow: 0 14px 30px rgba(16, 33, 63, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text-primary);
  background: var(--bg);
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(244, 247, 251, 0.88);
  border-bottom: 1px solid rgba(217, 226, 240, 0.9);
}

.nav-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}

.brand-cn {
  font-size: 18px;
  font-weight: 700;
}

.brand-en {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.4px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.main-nav a {
  font-size: 14px;
  color: var(--text-secondary);
}

.main-nav a:hover {
  color: var(--brand);
}

.hero {
  padding: 88px 0 54px;
  background:
    radial-gradient(circle at 14% 20%, rgba(29, 104, 255, 0.15), transparent 36%),
    radial-gradient(circle at 82% 12%, rgba(0, 169, 165, 0.17), transparent 34%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 24px;
}

.hero-tag {
  margin: 0;
  color: var(--brand);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.35px;
}

h1 {
  margin: 14px 0 16px;
  font-size: clamp(32px, 4.8vw, 52px);
  line-height: 1.16;
}

.hero-desc {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 640px;
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  gap: 14px;
}

.btn {
  min-width: 130px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  text-align: center;
  transition: all 0.2s ease;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
  box-shadow: 0 8px 18px rgba(19, 83, 214, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
}

.btn-secondary {
  color: var(--brand);
  background: #edf3ff;
  border: 1px solid #cadcff;
}

.hero-card {
  padding: 24px 24px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-card h2 {
  margin: 0 0 14px;
  font-size: 20px;
}

.hero-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-secondary);
  line-height: 1.9;
}

.section {
  padding: 72px 0;
}

.section-alt {
  background: #eef3fa;
}

.section-kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 1.2px;
  font-weight: 700;
  color: var(--accent);
}

.section-title {
  margin: 10px 0 12px;
  font-size: clamp(26px, 3.5vw, 36px);
  line-height: 1.28;
}

.section-intro {
  margin: 0;
  color: var(--text-secondary);
  max-width: 800px;
  line-height: 1.8;
}

.pill-group {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.pill-group span {
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 14px;
  background: #e5eefc;
  color: #1f4d93;
}

.product-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  min-height: 188px;
}

.card-type {
  margin: 0;
  color: var(--brand);
  font-size: 13px;
  font-weight: 600;
}

.card h3 {
  margin: 10px 0 10px;
  font-size: 22px;
}

.card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

.cap-grid,
.cooperation-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.cap-item,
.cooperation-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}

.cap-item h3,
.cooperation-item h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.cap-item p,
.cooperation-item p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.8;
}

.partner {
  background: #f4f8ff;
}

.partner-strip {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.partner-strip span {
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  min-height: 68px;
  background: #ffffff;
  color: #2a3d62;
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  padding: 6px 10px;
}

.contact {
  background: var(--surface-strong);
  color: #f8fbff;
}

.contact .section-kicker {
  color: #8be2de;
}

.contact .section-intro {
  color: #c1cee7;
}

.contact-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.mail-link {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  color: #ffffff;
  word-break: break-word;
}

.site-footer {
  background: #0c1930;
  color: #9bb0d2;
  border-top: 1px solid rgba(124, 148, 193, 0.24);
}

.footer-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  gap: 10px;
}

@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .partner-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .nav-wrap {
    padding: 12px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 10px 14px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .cap-grid,
  .cooperation-grid {
    grid-template-columns: 1fr;
  }

  .partner-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-wrap {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(1120px, calc(100% - 30px));
  }

  .hero {
    padding-top: 68px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .partner-strip {
    grid-template-columns: 1fr;
  }

  .footer-wrap {
    min-height: 92px;
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
    padding: 16px 0;
  }
}