:root {
  --primary: #1a3c6e;
  --primary-dark: #122d52;
  --accent: #f5a623;
  --accent-dark: #d4891a;
  --air: #0f7abf;
  --air-dark: #0a5f94;
  --air-light: #e8f4fc;
  --bg: #f4f6f9;
  --text: #2c2c2c;
  --text-light: #6b7280;
  --white: #ffffff;
  --border: #e5e7eb;
  --radius: 8px;
  --shadow: 0 4px 16px rgba(0,0,0,0.08);
  --transition: 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }

.section-eyebrow {
  text-align: center; font-size: 0.8rem; font-weight: 700;
  letter-spacing: 2px; color: var(--air); text-transform: uppercase; margin-bottom: 14px;
}
.section-title {
  font-size: 2rem; font-weight: 700; color: var(--primary);
  text-align: center; margin-bottom: 12px;
}
.section-subtitle {
  text-align: center; color: var(--text-light); font-size: 1rem;
  margin-bottom: 48px; max-width: 580px; margin-left: auto; margin-right: auto;
}

/* ── Buttons ── */
.btn {
  display: inline-block; padding: 12px 28px; border-radius: var(--radius);
  font-weight: 600; font-size: 0.95rem; cursor: pointer;
  transition: var(--transition); border: none;
}
.btn-air { background: var(--air); color: var(--white); }
.btn-air:hover { background: var(--air-dark); transform: translateY(-2px); }
.btn-outline-white { border: 2px solid var(--white); color: var(--white); background: transparent; }
.btn-outline-white:hover { background: var(--white); color: var(--primary); }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-white {
  background: var(--white); color: var(--primary); padding: 13px 30px;
  border-radius: var(--radius); font-weight: 700; font-size: 0.95rem;
  transition: var(--transition); display: inline-block;
}
.btn-white:hover { background: #f0f4ff; transform: translateY(-2px); }
.btn-outline-w {
  border: 2px solid rgba(255,255,255,0.6); color: var(--white); padding: 13px 30px;
  border-radius: var(--radius); font-weight: 600; font-size: 0.95rem;
  transition: var(--transition); display: inline-block;
}
.btn-outline-w:hover { background: rgba(255,255,255,0.1); }

/* ── Header ── */
.site-header {
  position: sticky; top: 0; left: 0; right: 0;
  background: var(--white); box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  z-index: 1000; height: 68px; display: flex; align-items: center;
}
.site-header .container {
  display: flex; align-items: center;
  justify-content: space-between; width: 100%;
}
.logo {
  font-size: 1.4rem; font-weight: 700; color: var(--primary);
  display: flex; align-items: center; gap: 8px; letter-spacing: -0.5px;
}
.logo span { color: var(--air); }
.main-nav { display: flex; align-items: center; gap: 36px; }
.main-nav a {
  color: var(--text); font-size: 0.9rem; font-weight: 500;
  transition: var(--transition); position: relative; padding-bottom: 4px;
}
.main-nav a::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 2px; background: var(--air); transition: var(--transition);
}
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { width: 100%; }
.main-nav a.active { color: var(--primary); font-weight: 700; }
.main-nav a.active::after { width: 100%; }

/* ── Page Hero ── */
.page-hero {
  background: linear-gradient(135deg, #0a2a45 0%, #0f4c75 50%, #1b6ca8 100%);
  color: var(--white); padding: 60px 0; text-align: center;
  position: relative; overflow: hidden;
}
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(74,158,202,0.12) 0%, transparent 60%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { font-size: 2.4rem; font-weight: 700; margin-bottom: 12px; }
.page-hero p { font-size: 1.05rem; opacity: 0.85; max-width: 560px; margin: 0 auto; }

/* ── Footer ── */
.site-footer { background: #111827; color: #9ca3af; padding: 64px 0 28px; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 48px;
}
.footer-brand .logo { color: var(--white); margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; }
.footer-col h4 { color: var(--white); font-size: 0.95rem; margin-bottom: 20px; }
.footer-col a,
.footer-col p { display: block; margin-bottom: 10px; font-size: 0.88rem; transition: var(--transition); }
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid #1f2937; padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center; font-size: 0.82rem;
}

/* ── WhatsApp ── */
.whatsapp-float {
  position: fixed; bottom: 32px; right: 32px;
  background: #25d366; width: 58px; height: 58px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  z-index: 9999; transition: var(--transition);
}
.whatsapp-float:hover { background: #128c7e; transform: scale(1.1); }
.whatsapp-float svg { width: 30px; height: 30px; fill: white; }

/* ── Spec Badges ── */
.spec-badge {
  display: inline-block; padding: 5px 14px;
  border: 1px solid rgba(15,122,191,0.3); border-radius: 20px;
  font-size: 0.78rem; font-weight: 600;
  color: var(--air); background: var(--air-light);
  margin: 4px 4px 4px 0;
}

/* ── Key Spec Cards ── */
.key-specs-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; margin-bottom: 28px; }
.key-spec-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
}
.key-spec-card .ks-label {
  font-size: 0.75rem; color: var(--text-light);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px;
}
.key-spec-card .ks-value { font-size: 1.6rem; font-weight: 700; color: var(--air); line-height: 1; }
.key-spec-card .ks-unit { font-size: 0.78rem; color: var(--text-light); margin-top: 4px; }

/* ── Full Specs Table ── */
.full-specs-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.full-specs-table tr { border-bottom: 1px solid var(--border); }
.full-specs-table tr:nth-child(even) { background: var(--bg); }
.full-specs-table td { padding: 12px 16px; }
.full-specs-table td:first-child {
  color: var(--text-light); font-size: 0.82rem;
  text-transform: uppercase; letter-spacing: 0.5px; width: 38%; font-weight: 600;
}
.full-specs-table td:last-child { color: var(--text); font-weight: 500; }

/* ── Feature List ── */
.feature-list { display: flex; flex-direction: column; gap: 16px; }
.feature-list-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 20px 24px; background: var(--white);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); transition: var(--transition);
}
.feature-list-item:hover { border-color: var(--air); box-shadow: 0 6px 20px rgba(15,122,191,0.1); }
.feature-list-item .fl-icon { font-size: 1.6rem; flex-shrink: 0; margin-top: 2px; }
.feature-list-item .fl-title { font-size: 0.95rem; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.feature-list-item .fl-desc { font-size: 0.87rem; color: var(--text-light); line-height: 1.65; }

/* ── Specs Table (Products Page) ── */
.specs-table-wrap { overflow-x: auto; margin-bottom: 24px; border-radius: var(--radius); box-shadow: var(--shadow); }
.specs-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; background: var(--white); }
.specs-table thead th {
  background: var(--primary); color: var(--white);
  padding: 14px 16px; text-align: left;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.5px; white-space: nowrap;
}
.specs-table tbody td {
  padding: 13px 16px; border-bottom: 1px solid var(--border);
  color: var(--text); vertical-align: middle;
}
.specs-table tbody tr:last-child td { border-bottom: none; }
.specs-table tbody tr:hover td { background: #f0f7ff; }
.specs-table tbody td:first-child { font-weight: 700; color: var(--primary); }
.table-link { color: var(--air); font-weight: 600; font-size: 0.85rem; transition: var(--transition); white-space: nowrap; }
.table-link:hover { color: var(--air-dark); }
.table-note { font-size: 0.78rem; color: var(--text-light); margin-top: 12px; }

/* ── Product Cards ── */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: 24px; }
.product-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 24px;
  box-shadow: var(--shadow); transition: var(--transition);
  display: flex; flex-direction: column; gap: 10px; cursor: pointer;
}
.product-card:hover { transform: translateY(-5px); box-shadow: 0 12px 32px rgba(0,0,0,0.12); border-color: var(--air); }
.product-card .p-icon { font-size: 2.2rem; }
.product-card .p-series { font-size: 0.75rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--air); }
.product-card .p-name { font-size: 1.05rem; font-weight: 700; color: var(--primary); }
.product-card .p-desc { font-size: 0.87rem; color: var(--text-light); line-height: 1.65; flex: 1; }
.product-card .p-arrow { color: var(--air); font-weight: 700; font-size: 1rem; }

/* ── Feature Grid ── */
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 24px; }
.feature-item {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 24px;
  box-shadow: var(--shadow); transition: var(--transition);
}
.feature-item:hover { border-color: var(--air); transform: translateY(-3px); }
.feature-item .f-icon { font-size: 2rem; margin-bottom: 14px; }
.feature-item .f-title { font-size: 0.95rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.feature-item .f-desc { font-size: 0.87rem; color: var(--text-light); line-height: 1.65; }

/* ── Stats Row ── */
.stats-row {
  display: flex; flex-wrap: wrap; margin-top: 48px;
  border-top: 4px solid var(--air); background: var(--white); box-shadow: var(--shadow);
}
.stats-row .stat-item {
  flex: 1; min-width: 160px; padding: 28px 24px;
  text-align: center; border-right: 1px solid var(--border);
}
.stats-row .stat-item:last-child { border-right: none; }
.stats-row .stat-num { font-size: 2.2rem; font-weight: 700; color: var(--primary); line-height: 1; }
.stats-row .stat-label { font-size: 0.82rem; color: var(--text-light); margin-top: 6px; }

/* ── Contact ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 60px; align-items: start; }
.contact-info h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 16px; }
.contact-info > p { color: var(--text-light); margin-bottom: 32px; }
.info-item { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 24px; }
.info-icon {
  width: 44px; height: 44px; background: var(--air-light);
  border-radius: var(--radius); display: flex; align-items: center;
  justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}
.info-item h4 {
  font-size: 0.82rem; color: var(--text-light); margin-bottom: 4px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.info-item a,
.info-item p {
  font-size: 0.95rem; color: var(--text);
  font-weight: 500; margin: 0; line-height: 1.6;
}
.info-item a:hover { color: var(--air); }

/* ── Contact Form ── */
.contact-form { background: var(--white); padding: 40px; border-radius: var(--radius); box-shadow: var(--shadow); }
.contact-form h3 { font-size: 1.3rem; color: var(--primary); margin-bottom: 8px; }
.contact-form .sub { color: var(--text-light); font-size: 0.9rem; margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 11px 14px;
  border: 1.5px solid var(--border); border-radius: var(--radius);
  font-size: 0.92rem; font-family: 'Inter', sans-serif;
  transition: var(--transition); background: var(--bg); color: var(--text);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none; border-color: var(--air); background: var(--white);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; padding: 14px; font-size: 1rem; font-weight: 700; border: none; cursor: pointer; }

/* ── Highlight Box ── */
.highlight-box {
  border-left: 4px solid var(--air); background: var(--air-light);
  padding: 16px 20px; border-radius: 0 var(--radius) var(--radius) 0;
  margin: 24px 0; font-size: 0.92rem; color: var(--text);
}

/* ── CTA Strip ── */
.cta-strip {
  padding: 80px 0;
  background: linear-gradient(135deg, #0a2a45, #0f4c75 50%, #1b6ca8);
  color: var(--white); text-align: center;
  position: relative; overflow: hidden;
}
.cta-strip::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 60% 50%, rgba(74,158,202,0.1) 0%, transparent 60%);
}
.cta-strip .container { position: relative; z-index: 1; }
.cta-strip h2 { font-size: 2rem; margin-bottom: 14px; font-weight: 700; }
.cta-strip p { opacity: 0.85; font-size: 1.05rem; max-width: 520px; margin: 0 auto 36px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ── Detail Page ── */
.detail-layout { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.detail-visual {
  background: linear-gradient(135deg, #0a2a45, #0f4c75);
  border-radius: var(--radius); height: 380px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 16px; position: sticky; top: 90px;
}
.detail-visual .dv-icon { font-size: 5rem; }
.detail-visual .dv-model { font-size: 2rem; font-weight: 700; color: var(--white); letter-spacing: 2px; }
.detail-visual .dv-type { font-size: 0.82rem; color: rgba(255,255,255,0.6); letter-spacing: 2px; text-transform: uppercase; }
.detail-category-tag {
  display: inline-block; background: var(--air-light); color: var(--air);
  font-size: 0.8rem; font-weight: 700; padding: 4px 14px;
  border-radius: 20px; margin-bottom: 16px;
}
.action-row { display: flex; gap: 14px; margin-top: 24px; }
.action-row a { flex: 1; text-align: center; }

/* ── About Page ── */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-intro-img {
  background: linear-gradient(135deg, #0a2a45, #0f4c75);
  border-radius: var(--radius); height: 380px;
  display: flex; align-items: center; justify-content: center; font-size: 5rem;
}
.about-intro-text h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 20px; line-height: 1.3; }
.about-intro-text p { color: var(--text-light); margin-bottom: 16px; line-height: 1.75; }
.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 24px; }
.value-card {
  text-align: center; padding: 32px 20px; background: var(--white);
  border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid var(--border); transition: var(--transition);
}
.value-card:hover { border-color: var(--air); transform: translateY(-3px); }
.value-icon { font-size: 2.4rem; margin-bottom: 14px; }
.value-card h3 { color: var(--primary); font-size: 1rem; margin-bottom: 8px; font-weight: 700; }
.value-card p { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; }
.sectors-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 20px; }
.sector-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow); transition: var(--transition);
}
.sector-card:hover { border-color: var(--air); transform: translateY(-3px); }
.sector-card .s-icon { font-size: 2rem; margin-bottom: 12px; }
.sector-card h4 { color: var(--primary); font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.sector-card p { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; }
.group-banner {
  background: linear-gradient(135deg, #0a2a45, #0f4c75);
  color: white; padding: 40px; border-radius: var(--radius);
  text-align: center; margin-top: 64px;
}
.group-banner p { opacity: 0.85; margin: 12px 0 24px; }

/* ── Responsive ── */
@media (max-width: 992px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .detail-layout { grid-template-columns: 1fr; }
  .detail-visual { position: static; height: 220px; }
  .about-intro { grid-template-columns: 1fr; }
  .about-intro-img { height: 220px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-title { font-size: 1.6rem; }
  .main-nav { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .action-row { flex-direction: column; }
  .key-specs-grid { grid-template-columns: 1fr 1fr; }
  .stats-row .stat-item { min-width: 50%; }
}
@media (max-width: 480px) {
  .key-specs-grid { grid-template-columns: 1fr; }
}