:root {
  --primary-blue: #0b6cb1;
  --dark-blue: #084c7d;
  --teal-green: #00a887;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --bg-light: #f8fafc;
  --border-color: #e2e8f0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--text-dark); background: #ffffff; line-height: 1.6; }

.zh-container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }
.zh-text-center { text-align: center; }

/* Topbar */
.zh-topbar { background: var(--dark-blue); color: #fff; font-size: 13px; padding: 8px 0; }
.zh-topbar__flex { display: flex; justify-content: space-between; align-items: center; }
.zh-topbar__contact span { margin-left: 15px; }

/* Header & Nav */
.zh-header { background: #fff; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
.zh-header__main { display: flex; align-items: center; justify-content: space-between; padding: 15px 20px; position: relative; }
.zh-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.zh-logo img { height: 44px; width: auto; object-fit: contain; }
.zh-logo__tagline { display: block; font-size: 11px; color: var(--primary-blue); font-weight: 600; }

.zh-nav__list { display: flex; list-style: none; gap: 20px; }
.zh-nav__list a { text-decoration: none; color: var(--text-dark); font-weight: 600; font-size: 14px; transition: color 0.2s; }
.zh-nav__list a:hover, .zh-nav__list a.active { color: var(--primary-blue); }

/* Mobile Hamburger Toggle */
.zh-nav-toggle,
.zh-mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  z-index: 1001;
}

.zh-hamburger-bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--primary-blue);
  border-radius: 3px;
  transition: all 0.3s ease-in-out;
}

/* Hamburger Active State Animation */
.zh-nav-toggle.active .zh-hamburger-bar:nth-child(1),
.zh-nav-toggle.is-open .zh-hamburger-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.zh-nav-toggle.active .zh-hamburger-bar:nth-child(2),
.zh-nav-toggle.is-open .zh-hamburger-bar:nth-child(2) {
  opacity: 0;
}
.zh-nav-toggle.active .zh-hamburger-bar:nth-child(3),
.zh-nav-toggle.is-open .zh-hamburger-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Buttons */
.zh-btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 24px; border-radius: 6px; font-weight: 600; font-size: 14px; text-decoration: none; cursor: pointer; border: none; transition: all 0.2s ease; }
.zh-btn--primary { background: var(--primary-blue); color: #fff !important; }
.zh-btn--primary:hover { background: var(--dark-blue); }
.zh-btn--outline { border: 1.5px solid var(--primary-blue); color: var(--primary-blue); background: transparent; }
.zh-btn--outline:hover { background: #f0f9ff; }
.zh-btn--full { width: 100%; padding: 14px; font-size: 15px; text-align: center; }

/* Hero Section */
.zh-hero-corporate { padding: 50px 0; background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%); }
.zh-hero-corporate__grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 40px; }
.zh-badge { background: #e0f2fe; color: var(--primary-blue); padding: 4px 12px; border-radius: 20px; font-size: 12px; font-weight: 700; text-transform: uppercase; }
.zh-hero-corporate h1 { font-size: 36px; color: #0f172a; margin: 15px 0; line-height: 1.25; }
.zh-hero-corporate h1 .highlight { color: var(--teal-green); }
.zh-hero-corporate p { font-size: 16px; color: var(--text-muted); margin-bottom: 25px; }
.zh-hero-corporate__buttons { display: flex; gap: 12px; margin-bottom: 20px; }
.zh-hero-corporate__image img { width: 100%; max-height: 420px; border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.1); object-fit: cover; }

/* Hero Features Row */
.zh-hero-features { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 35px; padding-top: 25px; border-top: 1px solid var(--border-color); }
.zh-hero-feature-item { display: flex; align-items: center; gap: 10px; font-size: 12px; }
.zh-hero-feature-item strong { display: block; color: var(--text-dark); line-height: 1.2; }
.zh-hero-feature-item span { color: var(--text-muted); }

/* Sections */
.zh-section { padding: 60px 0; }
.zh-section--gray { background: var(--bg-light); }
.zh-section--blue { background: var(--primary-blue); color: #fff; }
.zh-section--blue h1, .zh-section--blue h2 { color: #fff; margin-bottom: 10px; }
.zh-section-title { font-size: 28px; font-weight: 700; margin-bottom: 30px; color: #0f172a; }

/* About Overview (Who We Are / What We Do) */
.zh-about-overview { background-color: #ffffff; padding: 60px 0; }
.zh-about-overview__grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 50px; align-items: center; }
.zh-about-overview__content { display: flex; flex-direction: column; gap: 30px; }
.zh-about-block h2 { font-size: 28px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; letter-spacing: -0.5px; }
.zh-about-block p { font-size: 15px; line-height: 1.7; color: var(--text-muted); margin: 0; }

/* CEO Header & Card */
.zh-ceo-kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--primary-blue);
  background-color: #e0f2fe;
  padding: 6px 14px;
  border-radius: 20px;
  align-self: flex-start;
}

.zh-executive-card {
  width: 100%;
  max-width: 340px;
  margin: 0 auto;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-top: 4px solid var(--primary-blue);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.zh-executive-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 36px rgba(11, 108, 177, 0.12);
}

.zh-executive-card__badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(8, 76, 125, 0.88);
  color: #ffffff;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 4px 10px;
  border-radius: 12px;
  backdrop-filter: blur(4px);
  z-index: 2;
}

.zh-executive-card__image {
  width: 100%;
  height: 300px;
  background-color: #f1f5f9;
  overflow: hidden;
}

.zh-executive-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.4s ease;
}

.zh-executive-card:hover .zh-executive-card__image img {
  transform: scale(1.03);
}

.zh-executive-card__footer {
  padding: 16px 20px;
  text-align: center;
  background: #ffffff;
  border-top: 1px solid #f1f5f9;
}

.zh-executive-name {
  font-size: 1.2rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 2px 0;
}

.zh-executive-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--teal-green);
  margin: 0;
}

/* Features Bar */
.zh-features-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 16px; text-align: center; }
.zh-feature-box { background: #ffffff; padding: 18px 12px; border-radius: 8px; border: 1px solid var(--border-color); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; }
.zh-feature-box p { font-size: 12px; font-weight: 600; color: var(--text-dark); line-height: 1.3; }

/* Products Grid */
.zh-products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; margin-top: 28px; }
.zh-product-card { background: #ffffff; border: 1px solid var(--border-color); border-radius: 14px; overflow: hidden; display: flex; flex-direction: column; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03); }
.zh-product-card:hover { transform: translateY(-6px); box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08); border-color: #cbd5e1; }
.zh-product-card__img { width: 100%; height: 180px; background: #f8fafc; display: flex; align-items: center; justify-content: center; padding: 16px; border-bottom: 1px solid #f1f5f9; }
.zh-product-card__img img { max-width: 100%; max-height: 100%; object-fit: contain; }
.zh-product-card__body { padding: 18px; display: flex; flex-direction: column; flex-grow: 1; }
.zh-product-card__body h4 { font-size: 1.1rem; font-weight: 700; color: #0f172a; margin: 0 0 8px 0; }
.zh-product-badge { display: inline-block; align-self: flex-start; padding: 4px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; background: #e0f2fe; color: #0369a1; margin-bottom: 12px; }
.zh-product-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 16px; }
.zh-product-card__footer { margin-top: auto; padding-top: 12px; display: flex; align-items: center; justify-content: space-between; border-top: 1px dashed var(--border-color); }
.zh-product-price { font-size: 1rem; font-weight: 700; color: #166534; }
.zh-product-btn { display: inline-flex; align-items: center; justify-content: center; padding: 8px 14px; font-size: 0.82rem; font-weight: 600; border-radius: 8px; background: #0284c7; color: #ffffff !important; text-decoration: none; }

/* Contact & Forms */
.zh-contact-section { background-color: #f9fafb; padding: 50px 0; }
.zh-contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.zh-contact-info h2, .zh-contact-form-wrapper h2 { font-size: 24px; font-weight: 700; color: var(--text-dark); margin-bottom: 20px; }
.zh-info-list { list-style: none; padding: 0; margin: 0 0 20px 0; display: flex; flex-direction: column; gap: 14px; }
.zh-info-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: #a21c4b; }
.zh-info-list a { color: #a21c4b; text-decoration: none; font-weight: 500; }
.zh-contact-form-wrapper { background: #ffffff; padding: 24px; border-radius: 8px; border: 1px solid var(--border-color); }
.zh-form-group { margin-bottom: 16px; display: flex; flex-direction: column; }
.zh-form-group label { font-size: 13px; font-weight: 600; color: #374151; margin-bottom: 6px; }
.zh-form-group input, .zh-contact-form textarea { width: 100%; padding: 10px 12px; background-color: #f9fafb; border: 1px solid var(--border-color); border-radius: 6px; font-size: 14px; outline: none; }

/* Floating WhatsApp Button */
.zh-whatsapp-float { position: fixed; bottom: 20px; left: 20px; width: 52px; height: 52px; background-color: #25D366; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4); z-index: 9999; }

/* Footer */
.zh-footer { background: #0f172a; color: #94a3b8; padding: 20px 0; text-align: center; font-size: 13px; margin-top: 40px; }

/* ==========================================================================
   Mobile & Tablet Responsive Media Queries
   ========================================================================== */
@media (max-width: 768px) {
  /* Topbar Mobile Layout */
  .zh-topbar { padding: 6px 0; font-size: 11px; }
  .zh-topbar__flex { flex-direction: column; gap: 4px; text-align: center; }
  .zh-topbar__contact { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
  .zh-topbar__contact span { margin-left: 0; }

  /* Header & Navigation Toggle */
  .zh-header__main { padding: 12px 16px; position: relative; }
  .zh-header-btn { display: none; }

  .zh-nav-toggle,
  .zh-mobile-toggle { 
    display: flex; 
  }

  .zh-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #ffffff;
    max-height: 0;
    overflow: hidden;
    border-bottom: 0px solid transparent;
    box-shadow: none;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), border-bottom 0.2s ease, box-shadow 0.2s ease;
    z-index: 1000;
  }

  .zh-nav.active,
  .zh-nav.is-open {
    display: block;
    max-height: 500px;
    border-bottom: 3px solid var(--primary-blue);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
  }

  .zh-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
  }

  .zh-nav__list li {
    width: 100%;
  }

  .zh-nav__list a {
    display: block;
    padding: 12px 24px;
    font-size: 15px;
    border-bottom: 1px solid #f1f5f9;
  }

  .zh-nav__list a:hover,
  .zh-nav__list a.active {
    background-color: #f0f7ff;
  }

  /* Grid Responsive Stacking */
  .zh-hero-corporate__grid { grid-template-columns: 1fr; gap: 24px; }
  .zh-hero-corporate h1 { font-size: 28px; }
  .zh-about-overview__grid { grid-template-columns: 1fr; gap: 30px; }
  .zh-contact-grid { grid-template-columns: 1fr; gap: 24px; }
  .zh-about-block h2 { font-size: 24px; }
  .zh-features-bar { grid-template-columns: repeat(2, 1fr); }
}