* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  touch-action: pan-x pan-y;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #17324d;
  background: #f4f8fc;
  line-height: 1.7;
}

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

img {
  display: block;
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(23, 50, 77, 0.08);
  backdrop-filter: blur(12px);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand img {
  width: 68px;
  height: 68px;
  object-fit: contain;
  border-radius: 16px;
  background: #fff;
}

.brand strong,
.brand span {
  display: block;
}

.brand strong {
  font-size: 1rem;
}

.brand span {
  color: #54708a;
  font-size: 0.78rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 0.95rem;
  color: #35516c;
}

.hero {
  padding: 72px 0 56px;
  background: radial-gradient(circle at top left, rgba(16, 129, 255, 0.18), transparent 34%), linear-gradient(135deg, #ffffff 0%, #eef6ff 100%);
}

.contact-hero {
  padding: 72px 0 56px;
  background: radial-gradient(circle at top left, rgba(14, 140, 111, 0.16), transparent 36%), linear-gradient(135deg, #ffffff 0%, #eef8f5 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 36px;
  align-items: center;
}

.contact-hero-grid,
.contact-detail-grid {
  display: grid;
  gap: 24px;
}

.contact-hero-grid {
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  color: #0e8c6f;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.contact-hero h1,
.section-head h2,
.site-footer h2 {
  margin: 0;
  line-height: 1.2;
}

.hero h1,
.contact-hero h1 {
  font-size: clamp(2rem, 4vw, 3.6rem);
  max-width: 11ch;
}

.hero-text,
.section-head p,
.about-grid p,
.site-footer p,
.product-card p,
.advantage-grid p,
.application-list span,
.product-highlight p,
.contact-info-card p,
.inline-note {
  color: #587088;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
}

.btn-primary {
  background: linear-gradient(135deg, #0b84f3, #0e63d8);
  color: #fff;
  box-shadow: 0 14px 30px rgba(11, 132, 243, 0.24);
}

.btn-secondary {
  border: 1px solid rgba(11, 132, 243, 0.18);
  background: rgba(255, 255, 255, 0.86);
  color: #0e63d8;
}

.hero-points {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-points li,
.product-card li {
  position: relative;
  padding-left: 18px;
}

.hero-points li::before,
.product-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #0e8c6f;
}

.hero-card,
.product-card,
.advantage-grid article,
.application-list article,
.about-stats article,
.contact-card,
.contact-info-card {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(23, 50, 77, 0.08);
  border-radius: 28px;
  box-shadow: 0 20px 60px rgba(35, 79, 122, 0.08);
}

.hero-card {
  padding: 12px;
}

.product-highlight {
  padding: 28px;
  background: linear-gradient(180deg, rgba(11, 132, 243, 0.06), rgba(14, 140, 111, 0.05));
  border-radius: 24px;
}

.badge,
.card-tag {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(14, 140, 111, 0.12);
  color: #0e8c6f;
  font-size: 0.84rem;
  font-weight: 700;
}

.product-highlight h2,
.product-card h3,
.advantage-grid h3,
.section-head h2,
.application-list strong,
.about-stats strong,
.contact-info-card h3,
.contact-quick-list strong {
  color: #17324d;
}

.spec-grid,
.product-grid,
.advantage-grid,
.about-grid,
.footer-grid,
.contact-quick-list {
  display: grid;
  gap: 22px;
}

.spec-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.spec-grid article {
  padding: 18px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid rgba(23, 50, 77, 0.06);
}

.spec-grid strong,
.spec-grid span {
  display: block;
}

.spec-grid span {
  margin-top: 8px;
  color: #5f7790;
  font-size: 0.92rem;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: #eef5fb;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-head.left {
  margin-left: 0;
  text-align: left;
}

.product-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.product-card,
.advantage-grid article,
.application-list article,
.about-stats article,
.contact-card {
  padding: 26px;
}

.product-card.featured {
  grid-column: span 2;
  background: linear-gradient(180deg, #ffffff, #f1f9ff);
}

.product-card ul {
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.advantage-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.application-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 24px;
  align-items: start;
}

.application-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.application-list strong,
.application-list span,
.about-stats strong,
.about-stats span {
  display: block;
}

.application-list span,
.about-stats span {
  margin-top: 10px;
}

.about-grid {
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  align-items: center;
}

.about-stats {
  display: grid;
  gap: 18px;
}

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

.contact-info-card {
  padding: 28px;
}

.contact-info-card h3 {
  margin: 16px 0 12px;
}

.contact-info-card p {
  margin: 0 0 12px;
  font-size: 1rem;
}

.contact-quick-list article {
  padding: 18px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid rgba(23, 50, 77, 0.06);
}

.contact-quick-list strong,
.contact-quick-list span {
  display: block;
}

.contact-quick-list span {
  margin-top: 8px;
  color: #5f7790;
  font-size: 0.94rem;
  word-break: break-word;
}

.inline-link,
.footer-extra a {
  color: #0e63d8;
  font-weight: 700;
}

.inline-note {
  display: inline-block;
  font-size: 0.92rem;
}

.site-footer {
  padding: 56px 0 72px;
  background: #112b46;
  color: #e8f1fb;
}

.footer-grid {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  align-items: center;
}

.contact-card {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}

.contact-card p,
.site-footer p {
  color: rgba(232, 241, 251, 0.86);
}

.footer-extra {
  margin-top: 16px;
}

.filing-info {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(232, 241, 251, 0.12);
  text-align: center;
}

.filing-info p {
  margin: 0;
  color: rgba(232, 241, 251, 0.72);
  font-size: 0.92rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .contact-hero-grid,
  .about-grid,
  .application-layout,
  .footer-grid,
  .product-grid,
  .advantage-grid,
  .contact-detail-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-grid,
  .contact-hero-grid,
  .about-grid,
  .application-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .product-card.featured {
    grid-column: span 2;
  }

  .advantage-grid,
  .product-grid,
  .application-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
  }

  .nav-bar,
  .brand {
    align-items: flex-start;
  }

  .nav-bar {
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    justify-content: flex-start;
    gap: 12px 16px;
    font-size: 0.92rem;
  }

  .hero {
    padding-top: 48px;
  }

  .hero h1,
  .contact-hero h1 {
    max-width: none;
  }

  .spec-grid,
  .product-grid,
  .advantage-grid,
  .application-list,
  .contact-detail-grid {
    grid-template-columns: 1fr;
  }

  .product-card.featured {
    grid-column: span 1;
  }

  .section,
  .site-footer {
    padding: 56px 0;
  }

  .container {
    width: min(100% - 24px, 1120px);
  }

  .product-highlight,
  .product-card,
  .advantage-grid article,
  .application-list article,
  .about-stats article,
  .contact-card,
  .contact-info-card {
    padding: 22px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .brand img {
    width: 54px;
    height: 54px;
  }

  .brand strong {
    font-size: 0.94rem;
  }

  .brand span {
    font-size: 0.72rem;
  }

  .btn {
    width: 100%;
  }

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