/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0 }
html { scroll-behavior: smooth }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: #333;
  line-height: 1.6;
  background: #fff;
}
a { color: inherit; text-decoration: none }
ul { list-style: none }
img { max-width: 100%; height: auto; display: block }
address { font-style: normal }
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem }

/* Top Bar */
.topbar {
  background: #127f7c;
  color: #fff;
  font-size: 0.85rem;
  padding: 0.4rem 0;
}
.topbar-inner {
  display: flex;
  gap: 1.5rem;
  justify-content: flex-end;
}
.topbar-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: #fff;
  transition: opacity 0.2s;
}
.topbar-link:hover { opacity: 0.8 }
.topbar-link svg { flex-shrink: 0 }

/* Header */
.header {
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.logo img { height: 44px; width: auto }
.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: #127f7c;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
}
.menu-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: #333;
  border-radius: 2px;
  transition: 0.3s;
}

/* Navigation */
.nav-list {
  display: flex;
  gap: 0;
}
.nav-list > li > a {
  display: block;
  padding: 0.8rem 0.9rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: #333;
  transition: color 0.2s;
}
.nav-list > li > a:hover,
.nav-list > li:hover > a {
  color: #127f7c;
}

/* Dropdown */
.has-sub { position: relative }
.sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: #fff;
  border: 1px solid #e5e5e5;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-radius: 4px;
  z-index: 200;
}
.has-sub:hover > .sub-menu { display: block }
.sub-menu li a {
  display: block;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  color: #444;
  transition: background 0.15s, color 0.15s;
}
.sub-menu li a:hover {
  background: #f0faf9;
  color: #127f7c;
}
/* Nested sub-menu */
.sub-menu .has-sub > .sub-menu {
  top: 0;
  left: 100%;
}

/* Hero */
.hero {
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero-text h1 {
  font-size: 4.5rem;
  color: #fff;
  margin-bottom: 1.2rem;
  line-height: 1.05;
  font-weight: 300;
}
.hero-lead {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.88);
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-block;
  background: #127f7c;
  color: #fff;
  padding: 0.75rem 1.8rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s, transform 0.15s;
}
.btn:hover {
  background: #0e6563;
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  border: 2px solid #127f7c;
  color: #127f7c;
}
.btn-outline:hover {
  background: #127f7c;
  color: #fff;
}

/* Sections */
.section { padding: 4rem 0 }
.section h2 {
  font-size: 1.8rem;
  color: #222;
  margin-bottom: 2rem;
  text-align: center;
}

/* Events */
.events {
  background: #fff;
}
.events h2 {
  text-align: left;
  font-size: 1.4rem;
  font-weight: 400;
  margin-bottom: 1.5rem;
}
.event-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.event-card {
  position: relative;
  display: block;
  border-radius: 4px;
  overflow: hidden;
  text-decoration: none;
  color: #333;
}
.event-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.event-date {
  position: absolute;
  top: 12px;
  left: 12px;
  background: #127f7c;
  color: #fff;
  padding: 6px 10px;
  border-radius: 4px;
  text-align: center;
  line-height: 1.2;
}
.event-day {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
}
.event-month {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.event-info {
  padding: 0.5rem 0;
}
.event-range {
  display: block;
  font-size: 0.75rem;
  color: #888;
  margin-bottom: 0.2rem;
}
.event-info strong {
  font-size: 0.9rem;
}

/* Testimonials */
.testimonials { background: #f5f7f8; padding: 3.5rem 0 }
.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.testimonial-card {
  background: #fff;
  border-radius: 8px;
  padding: 2rem 2rem 1.5rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.quote-icon {
  margin-bottom: 0.8rem;
  opacity: 0.6;
}
.testimonial-card p {
  font-size: 0.95rem;
  color: #444;
  line-height: 1.7;
  margin-bottom: 1rem;
}
.testimonial-card cite {
  display: block;
  font-style: normal;
  font-size: 0.88rem;
  color: #666;
  margin-bottom: 1rem;
}
.testimonial-card cite strong { color: #127f7c }
.testimonial-logo {
  height: 60px;
  width: auto;
  object-fit: contain;
}

/* Certifications */
.certs { background: #f5f7f8 }
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.cert-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
}
.cert-card img {
  height: 80px;
  width: 80px;
  flex-shrink: 0;
  object-fit: contain;
}
.cert-card p {
  font-size: 0.88rem;
  color: #555;
  line-height: 1.6;
}

/* ChemGuard */
.chemguard {
  background: linear-gradient(160deg, #1a9e9b 0%, #127f7c 100%);
  color: #fff;
  padding: 2.5rem 0;
  position: relative;
  margin-top: 4rem;
}
.chemguard::before {
  content: '';
  position: absolute;
  top: -80px;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(160deg, #1a9e9b 0%, #127f7c 100%);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}
.chemguard-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.chemguard-tagline {
  font-size: 1.05rem;
  opacity: 0.95;
}
.chemguard-logo {
  flex: 0 0 220px;
}
.chemguard-logo img {
  filter: brightness(0) invert(1);
}

/* Footer */
.footer {
  background: linear-gradient(160deg, #159c8f 0%, #0f706e 100%);
  color: #e0f0ef;
  padding: 3rem 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
.footer-company {
  font-weight: 700;
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}
.footer h3 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
}
.footer address,
.footer li {
  font-size: 0.88rem;
  line-height: 1.8;
}
.footer-social {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  padding-top: 0.5rem;
}
.social-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: background 0.2s;
}
.social-circle:hover {
  background: rgba(255,255,255,0.3);
}
.footer a { color: #fff; transition: color 0.2s }
.footer a:hover { color: #d0f5f0 }
.social-link {
  display: inline-flex;
  margin-top: 0.3rem;
}
.footer-bottom {
  margin-top: 2.5rem;
  padding: 1rem 0;
  border-top: 1px solid rgba(255,255,255,0.15);
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
}
.footer-bottom a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
}
.footer-bottom a:hover {
  color: #fff;
}

/* Responsive */
@media (max-width: 980px) {
  .menu-toggle { display: flex }
  .nav { display: none; width: 100% }
  .nav.open { display: block }
  .header-inner { flex-wrap: wrap }
  .nav-list {
    flex-direction: column;
    padding: 0.5rem 0;
  }
  .nav-list > li > a { padding: 0.7rem 0 }
  .sub-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: 1rem;
  }
  .has-sub:hover > .sub-menu { display: none }
  .has-sub.open > .sub-menu { display: block }
  .sub-menu .has-sub > .sub-menu {
    position: static;
    left: 0;
  }
  .hero-text h1 { font-size: 2.8rem }
  .event-grid { grid-template-columns: 1fr 1fr }
  .testimonial-grid { grid-template-columns: 1fr }
  .cert-grid { grid-template-columns: 1fr }
  .cert-card { gap: 1rem }
  .chemguard-inner {
    flex-direction: column;
    text-align: center;
  }
  .chemguard-logo { flex: none; max-width: 180px }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 600px) {
  .topbar-inner { font-size: 0.78rem; gap: 1rem }
  .hero { min-height: 60vh !important }
  .hero-text h1 { font-size: 2.2rem }
  .section { padding: 2.5rem 0 }
  .event-grid { grid-template-columns: 1fr }
  .footer-inner { grid-template-columns: 1fr }
}