:root {
  --blue-deep: #062a5f;
  --blue: #075bb8;
  --blue-soft: #eaf3ff;
  --sky: #04a6e3;
  --green: #16a36f;
  --green-soft: #e8f7f0;
  --teal: #0a9f9a;
  --ink: #10243f;
  --muted: #607087;
  --surface: #ffffff;
  --surface-soft: #f4f9fc;
  --line: rgba(16, 36, 63, 0.1);
  --shadow: 0 16px 34px rgba(6, 42, 95, 0.1);
  --brand-gradient: linear-gradient(120deg, var(--blue) 0%, var(--sky) 46%, var(--green) 100%);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  background: #f7fbfd;
  color: var(--ink);
  line-height: 1.6;
}

.gzh {
  width: 120px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  background: rgba(6, 42, 95, 0.96);
  color: #ffffff;
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 10px 26px rgba(6, 42, 95, 0.16);
}

.header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--brand-gradient);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

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

.logo-icon img {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.14);
}

.company-name {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: #ffffff;
}

.company-name small {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 1px;
  color: #bdefff;
}

.nav-links {
  display: flex;
  gap: 26px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  color: #edf7ff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  transition: color 0.24s, border-bottom 0.24s, transform 0.24s;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover {
  color: #7ee2bd;
  border-bottom-color: #7ee2bd;
  transform: translateY(-1px);
}

.btn-outline-gold {
  border: 1px solid rgba(126, 226, 189, 0.8);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  padding: 8px 20px;
  border-radius: 30px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.24s;
  margin-left: 8px;
}

.btn-outline-gold:hover {
  background: #ffffff;
  color: var(--blue-deep);
  border-color: #ffffff;
}

.hero {
  background:
    linear-gradient(120deg, rgba(6, 42, 95, 0.98) 0%, rgba(7, 91, 184, 0.94) 48%, rgba(22, 163, 111, 0.92) 100%);
  color: #ffffff;
  padding: 84px 0 96px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(90deg, rgba(0, 0, 0, 0.8), transparent 82%);
  opacity: 0.55;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.hero-text {
  flex: 1 1 430px;
}

.hero-text h1 {
  font-size: 3.15rem;
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 20px;
  color: #ffffff;
  text-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.hero-text h1 span {
  color: #9df0cf;
  display: block;
}

.hero-text p {
  font-size: 1.18rem;
  margin-bottom: 30px;
  color: #eaf7ff;
  max-width: 580px;
}

.btn-primary {
  background: linear-gradient(135deg, #ffffff 0%, #f0fff8 100%);
  color: var(--blue-deep);
  padding: 14px 36px;
  border-radius: 40px;
  font-weight: 800;
  font-size: 1.05rem;
  text-decoration: none;
  display: inline-block;
  transition: 0.24s;
  border: 1px solid rgba(126, 226, 189, 0.82);
  box-shadow: 0 14px 26px rgba(6, 42, 95, 0.18);
  letter-spacing: 0.5px;
}

.btn-primary:hover {
  transform: translateY(-3px);
  color: var(--blue);
  border-color: #ffffff;
  box-shadow: 0 18px 30px rgba(6, 42, 95, 0.24);
}

.hero-visual {
  flex: 1 1 300px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.pool-badge {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 8px;
  padding: 36px 54px 32px;
  text-align: center;
  box-shadow: 0 22px 42px rgba(6, 42, 95, 0.24);
  position: relative;
  overflow: hidden;
}

.pool-badge::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--brand-gradient);
}

.badge-logo {
  width: 88px;
  height: 88px;
  object-fit: contain;
  margin-bottom: 14px;
  filter: drop-shadow(0 8px 14px rgba(6, 42, 95, 0.12));
}

.pool-badge .badge-text {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--blue);
}

.pool-badge p {
  color: var(--green);
  font-weight: 700;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--blue-deep);
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 78px;
  height: 3px;
  background: var(--brand-gradient);
  margin: 14px auto 0;
  border-radius: 2px;
}

.section-title p {
  color: var(--muted);
  margin-top: 10px;
  font-size: 1.08rem;
}

.about {
  padding: 80px 0;
  background: #ffffff;
}

.about-content {
  display: flex;
  gap: 50px;
  align-items: center;
  flex-wrap: wrap;
}

.about-text {
  flex: 1 1 400px;
}

.about-text p {
  font-size: 1.08rem;
  margin-bottom: 20px;
  color: #33445e;
}

.about-text strong {
  color: var(--blue);
}

.about-image {
  flex: 1 1 400px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--teal) 55%, var(--green) 100%);
  border-radius: 8px;
  padding: 44px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  color: #ffffff;
}

.about-image i {
  font-size: 5rem;
  color: #ffffff;
  margin-bottom: 15px;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
}

.about-image span {
  color: #ffffff;
  font-weight: 800;
  font-size: 1.3rem;
}

.about-image p {
  color: #dffbf0;
}

.services {
  padding: 80px 0;
  background: var(--surface-soft);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 26px;
}

.service-card {
  --card-accent: var(--blue);
  --card-soft: var(--blue-soft);
  background: var(--surface);
  border-radius: 8px;
  padding: 34px 24px;
  text-align: center;
  box-shadow: 0 10px 24px rgba(6, 42, 95, 0.06);
  transition: all 0.24s ease;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--card-accent);
}

.service-card:nth-child(2),
.service-card:nth-child(5) {
  --card-accent: var(--teal);
  --card-soft: #e7f7f6;
}

.service-card:nth-child(3),
.service-card:nth-child(6) {
  --card-accent: var(--green);
  --card-soft: var(--green-soft);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.service-icon {
  font-size: 2.85rem;
  color: var(--card-accent);
  background: var(--card-soft);
  width: 78px;
  height: 78px;
  line-height: 78px;
  border-radius: 50%;
  margin: 0 auto 20px;
  transition: 0.24s;
}

.service-card:hover .service-icon {
  background: var(--card-accent);
  color: #ffffff;
}

.service-card h3 {
  font-size: 1.45rem;
  margin-bottom: 12px;
  color: var(--blue-deep);
}

.service-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.certification {
  padding: 80px 0;
  background: #ffffff;
}

.cert-grid {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  justify-content: center;
}

.cert-item {
  --cert-accent: var(--blue);
  background: #ffffff;
  border-radius: 8px;
  padding: 30px;
  flex: 1 1 250px;
  text-align: center;
  border: 1px solid var(--line);
  border-top: 4px solid var(--cert-accent);
  box-shadow: 0 10px 24px rgba(6, 42, 95, 0.05);
  transition: 0.24s;
}

.cert-item:nth-child(2),
.cert-item:nth-child(4) {
  --cert-accent: var(--green);
}

.cert-item:hover {
  transform: translateY(-5px);
  background: #fbfdff;
  box-shadow: var(--shadow);
}

.cert-item i {
  font-size: 2.7rem;
  color: var(--cert-accent);
  margin-bottom: 15px;
}

.cert-item h4 {
  font-size: 1.25rem;
  color: var(--blue-deep);
  margin-bottom: 8px;
}

.cert-item p {
  color: var(--muted);
}

.equipment {
  padding: 80px 0;
  background: linear-gradient(120deg, var(--blue-deep) 0%, var(--blue) 55%, var(--green) 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.equipment::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: rgba(255, 255, 255, 0.36);
}

.equipment .container {
  position: relative;
  z-index: 1;
}

.equipment .section-title h2 {
  color: #ffffff;
}

.equipment .section-title p {
  color: #e7f7ff;
}

.equip-row {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  align-items: center;
}

.equip-info {
  flex: 1 1 300px;
  font-size: 1.1rem;
}

.equip-info p {
  margin-bottom: 10px;
}

.equip-info i {
  color: #9df0cf;
  margin-right: 10px;
}

.equip-visual {
  flex: 1 1 300px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  border-left: 5px solid var(--green);
  color: var(--ink);
  box-shadow: 0 20px 34px rgba(6, 42, 95, 0.22);
}

.equip-visual p:last-child {
  color: var(--muted);
}

.footer {
  background: #061f49;
  color: #c8d8ec;
  padding: 50px 0 20px;
  position: relative;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--brand-gradient);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer h4 {
  color: #9df0cf;
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.footer p {
  color: #c8d8ec;
}

.footer a {
  color: #c8d8ec;
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  transition: 0.2s;
}

.footer a:hover {
  color: #9df0cf;
}

.copyright {
  text-align: center;
  border-top: 1px solid rgba(200, 216, 236, 0.2);
  padding-top: 20px;
  font-size: 0.9rem;
  color: #9fb2cc;
}

@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    gap: 15px;
  }

  .nav-links {
    justify-content: center;
    gap: 15px;
  }

  .company-name {
    font-size: 1.2rem;
  }

  .company-name small {
    font-size: 0.62rem;
  }

  .hero {
    padding: 62px 0 76px;
  }

  .hero-text h1 {
    font-size: 2.35rem;
  }

  .hero-text p {
    font-size: 1.08rem;
  }

  .pool-badge {
    padding: 30px 28px 26px;
  }
}