@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@600;700&display=swap');

:root {
  --bg-soft: #e7eff4;
  --blue-main: #1496d7;
  --blue-deep: #035d94;
  --navy: #081933;
  --text-main: #0e2b44;
  --white: #ffffff;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-main);
  background: linear-gradient(180deg, #f1f7fb 0%, var(--bg-soft) 45%, #d8e6ef 100%);
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.top-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid #d6e4ef;
  backdrop-filter: blur(6px);
}

.nav-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 72px;
  height: 72px;
  border-radius: 999px;
  object-fit: cover;
  border: 2px solid #1a8dca;
  box-shadow: 0 4px 12px rgba(8, 25, 51, 0.15);
}

.brand h1 {
  margin: 0;
  font-size: 1.35rem;
  font-family: 'Space Grotesk', sans-serif;
  color: var(--blue-deep);
  line-height: 1;
}

.brand p {
  margin: 4px 0 0;
  font-size: 0.66rem;
  letter-spacing: 1px;
  color: #329ace;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links button,
.nav-links a {
  border: 0;
  background: transparent;
  text-decoration: none;
  color: #2a4257;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
}

.nav-links .active {
  color: var(--blue-main);
}

.hero {
  position: relative;
  top: auto;
  z-index: 10;
  overflow: hidden;
  padding: 68px 0 74px;
  background: linear-gradient(145deg, #0f8fcb 0%, #0e89c1 55%, #178ec8 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 640px;
  color: var(--white);
}

.hero h2 {
  margin: 0;
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.9rem, 4.2vw, 3.4rem);
  line-height: 0.98;
}

.hero h2 span {
  color: #b8e9ff;
}

.hero p {
  margin: 20px 0 0;
  max-width: 560px;
  font-size: 1.05rem;
  line-height: 1.55;
  color: #def4ff;
}

.hero-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-primary,
.btn-outline {
  border-radius: 999px;
  border: 0;
  padding: 13px 24px;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px
}

.btn-primary {
  background: #ffffff;
  color: var(--blue-main);
}

.btn-primary:hover {
  background: #f1f1f1;
  cursor: pointer;
}

.btn-outline {
  color: #ffffff;
  border: 1px solid #6ed2ff;
  background: rgba(17, 141, 198, 0.38);
}

.orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.orb-one {
  width: 620px;
  height: 620px;
  right: -130px;
  top: 30px;
  background: rgba(139, 221, 255, 0.18);
}

.orb-two {
  width: 980px;
  height: 980px;
  left: -440px;
  bottom: -730px;
  background: rgba(189, 236, 255, 0.2);
}

.content-wrap {
  padding: 24px 0 62px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.search-wrap {
  position: relative;
  width: min(1120px, 92vw);
  margin: 0 auto;
  margin-top: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 8px 0;
  background: linear-gradient(180deg, rgba(241, 247, 251, 0.94) 0%, rgba(241, 247, 251, 0.74) 100%);
}

.search-wrap input {
  width: min(620px, 100%);
  padding: 13px 16px;
  border-radius: 12px;
  border: 2px solid #1496d7;
  font-size: 1rem;
  font-family: inherit;
  box-shadow: 0 4px 12px rgba(20, 150, 215, 0.15);
  transition: all 0.3s ease;
}

.search-wrap input:hover {
  border-color: #0e89c1;
  box-shadow: 0 6px 16px rgba(20, 150, 215, 0.25);
}

.search-wrap input:focus {
  outline: none;
  border-color: #0e89c1;
  box-shadow: 0 6px 20px rgba(20, 150, 215, 0.35);
}

.tabs-wrap {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 24px;
}

.tabs-wrap button {
  border: 0;
  border-radius: 999px;
  padding: 13px 24px;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: #486579;
  background: #ebf4fa;
  cursor: pointer;
}

.tabs-wrap .active {
  color: #ffffff;
  background: var(--blue-main);
}

.state-text {
  text-align: center;
  font-weight: 600;
  color: #456378;
}

.state-error {
  color: #c2410c;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  position: relative;
  border-radius: 14px;
  background: #f6fbff;
  overflow: hidden;
  border: 1px solid #d6e8f3;
  box-shadow: 0 10px 26px rgba(4, 33, 56, 0.06);
}

.product-card img {
  width: auto;
  max-width: 100%;
  height: 300px;
  object-fit: contain;
  display: block;
  margin: 12px auto 0;
  background: #f0f8ff;
}

.card-body {
  padding: 14px;
}

.card-body small {
  font-size: 0.68rem;
  color: #2b9bce;
  font-weight: 800;
}

.card-body h3 {
  margin: 6px 0;
  font-size: 1.36rem;
  line-height: 1.2;
}

.card-body p {
  margin: 0;
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--blue-main);
}

.hot-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: #ff7f11;
  color: #ffffff;
  padding: 5px 8px;
  border-radius: 999px;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.site-footer {
  padding: 44px 0 16px;
  background: linear-gradient(180deg, #06122e 0%, #08152f 100%);
  color: #d8e7f7;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.footer-hotline {
  font-size: 1.8rem;
  font-weight: 700;
  color: #4dd0ff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 14px;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(77, 208, 255, 0.15);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: rgba(77, 208, 255, 0.3);
  transform: translateY(-2px);
}

.site-footer h3,
.site-footer h4 {
  margin-top: 0;
  color: #4dd0ff;
}

.site-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
  line-height: 1.9;
}

.footer-copy {
  text-align: center;
  margin: 34px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(175, 216, 244, 0.15);
  color: #92aeca;
}

.pagination {
  display: none;
}

.sentinel {
  height: 50px;
  margin-top: 20px;
}

.loading-more {
  text-align: center;
  padding: 20px;
  color: #2b9bce;
  font-weight: 600;
  margin-top: 16px;
}

@media (max-width: 960px) {
  .nav-inner {
    min-height: auto;
    padding: 10px 0;
    gap: 10px;
    flex-wrap: wrap;
  }

  .brand {
    width: 100%;
  }

  .nav-links {
    display: flex;
    width: 100%;
    gap: 10px;
    justify-content: flex-start;
    overflow-x: auto;
    padding: 2px 0 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links button,
  .nav-links a {
    flex: 0 0 auto;
    white-space: nowrap;
    font-size: 0.96rem;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-hotline {
    font-size: 1.5rem;
  }

  .footer-social {
    gap: 10px;
  }

  .social-link {
    width: 36px;
    height: 36px;
  }

  .card-body h3 {
    font-size: 1.2rem;
  }

  .card-body p {
    font-size: 1.3rem;
  }
}

@media (max-width: 640px) {
  .top-header {
    position: sticky;
  }

  .brand {
    gap: 10px;
  }

  .brand h1 {
    font-size: 1.08rem;
  }

  .brand p {
    font-size: 0.58rem;
    letter-spacing: 0.8px;
  }

  .brand-logo {
    width: 58px;
    height: 58px;
  }

  .hero {
    padding: 50px 0 56px;
  }

  .hero p {
    font-size: 0.95rem;
  }

  .content-wrap {
    padding-top: 24px;
  }

  .search-wrap {
    padding: 6px 0 2px;
  }

  .search-wrap input {
    font-size: 0.96rem;
    padding: 12px 14px;
  }

  .tabs-wrap {
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 2px;
    margin: 10px 0 14px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .tabs-wrap::-webkit-scrollbar {
    display: none;
  }

  .tabs-wrap button {
    flex: 0 0 auto;
    padding: 8px 12px;
    font-size: 0.88rem;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .product-card {
    border-radius: 12px;
  }

  .product-card img {
    height: 200px;
    margin-top: 2px;
  }

  .card-body {
    padding: 8px;
  }

  .card-body small {
    display: block;
    margin: 0 0 2px 0;
  }

  .card-body h3 {
    font-size: 1.05rem;
    margin: 2px 0 4px 0;
  }

  .card-body p {
    font-size: 1.2rem;
  }

  .hot-tag {
    top: 4px;
    left: 8px;
    font-size: 0.62rem;
  }

}