:root {
  --blue: #0b4f8a;
  --blue-dark: #073a66;
  --blue-darker: #052a4b;
  --accent: #f59e0b;
  --accent-hover: #e08c00;
  --text: #2b3440;
  --muted: #5c6b7a;
  --bg: #ffffff;
  --bg-alt: #f4f7fa;
  --border: #e2e8f0;
  --whatsapp: #25d366;
  --radius: 10px;
  --shadow: 0 2px 12px rgba(5, 42, 75, 0.08);
  --shadow-lg: 0 8px 30px rgba(5, 42, 75, 0.14);
  --container: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ---------------- Topbar & Header ---------------- */

.topbar {
  background: var(--blue-darker);
  color: #cfe0f0;
  font-size: 13px;
}
.topbar-inner { display: flex; justify-content: space-between; align-items: center; min-height: 36px; gap: 16px; flex-wrap: wrap; }
.topbar a { color: #cfe0f0; margin-left: 18px; }
.topbar a:hover { color: #fff; }

.header-main { background: #fff; border-bottom: 1px solid var(--border); }
.header-inner { display: flex; justify-content: space-between; align-items: center; min-height: 74px; gap: 24px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 44px; height: 44px; border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), #1d7bc4);
  color: #fff; font-size: 24px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 800; font-size: 18px; color: var(--blue-dark); letter-spacing: 0.2px; }
.brand-sub { font-size: 12px; color: var(--muted); letter-spacing: 0.4px; }

.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a { color: var(--text); font-weight: 500; font-size: 15px; padding: 6px 2px; border-bottom: 2px solid transparent; }
.main-nav a:hover { color: var(--blue); border-bottom-color: var(--accent); }
.main-nav a.active { color: var(--blue); border-bottom-color: var(--accent); }
.nav-cta { border-bottom: none !important; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--blue-dark); border-radius: 2px; }

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 24px; border-radius: 8px; font-weight: 600; font-size: 15px;
  border: 2px solid transparent; cursor: pointer; transition: all 0.2s ease; text-align: center;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); color: #fff; }
.btn-accent { background: var(--accent); color: #052a4b; }
.btn-accent:hover { background: var(--accent-hover); color: #052a4b; }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.7); }
.btn-outline:hover { background: rgba(255,255,255,0.12); color: #fff; }
.btn-whatsapp { background: var(--whatsapp); color: #fff; }
.btn-whatsapp:hover { background: #1fb556; color: #fff; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 6px; }
.btn-block { width: 100%; }
.btn-danger { background: #dc2626; color: #fff; }
.btn-danger:hover { background: #b91c1c; color: #fff; }

/* ---------------- Hero ---------------- */

.hero { position: relative; color: #fff; min-height: 540px; display: flex; align-items: center; }
.hero-slide {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  animation: heroFade 0.8s ease;
}
@keyframes heroFade { from { opacity: 0.4; } to { opacity: 1; } }
.hero-content { position: relative; padding: 60px 20px; max-width: var(--container); margin: 0 auto; width: 100%; }
.hero h1 { font-size: 44px; line-height: 1.2; font-weight: 800; max-width: 820px; margin-bottom: 16px; }
.hero-sub { font-size: 18px; color: #d7e6f5; max-width: 700px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-tags span {
  background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.28);
  padding: 5px 14px; border-radius: 999px; font-size: 13px;
}

/* ---------------- Trust strip ---------------- */

.trust-strip { background: var(--blue); color: #fff; }
.trust-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; padding: 26px 0; }
.trust-item { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 2px; }
.trust-item strong { font-size: 22px; color: var(--accent); }
.trust-item span { font-size: 13px; color: #d7e6f5; }

/* ---------------- Sections ---------------- */

.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 40px; }
.section-head h2 { font-size: 32px; color: var(--blue-dark); margin-bottom: 10px; }
.section-head p { color: var(--muted); font-size: 16px; }
.section-action { text-align: center; margin-top: 36px; }

/* ---------------- Category grid ---------------- */

.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.2s ease, box-shadow 0.2s ease; display: flex; flex-direction: column;
}
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.category-card-img { height: 180px; overflow: hidden; background: var(--bg-alt); }
.category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.category-card:hover .category-card-img img { transform: scale(1.05); }
.category-card-body { padding: 18px 20px; display: flex; flex-direction: column; flex: 1; }
.category-card-body h3 { color: var(--blue-dark); font-size: 18px; margin-bottom: 6px; }
.category-card-body p { color: var(--muted); font-size: 14px; flex: 1; }
.category-card-count { margin-top: 12px; color: var(--accent); font-weight: 600; font-size: 14px; }

/* ---------------- Product & Blog cards ---------------- */

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.2s ease, box-shadow 0.2s ease; display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.product-card-img { height: 210px; overflow: hidden; background: var(--bg-alt); }
.product-card-img img { width: 100%; height: 100%; object-fit: cover; }
.product-card-body { padding: 18px 20px; display: flex; flex-direction: column; flex: 1; }
.product-card-body h3 { color: var(--blue-dark); font-size: 17px; margin-bottom: 6px; }
.product-card-body p { color: var(--muted); font-size: 14px; flex: 1; }
.product-card-link { margin-top: 12px; color: var(--blue); font-weight: 600; font-size: 14px; }

.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.blog-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: box-shadow 0.2s ease;
}
.blog-card:hover { box-shadow: var(--shadow-lg); }
.blog-card-img { height: 180px; overflow: hidden; background: var(--bg-alt); }
.blog-card-img img { width: 100%; height: 100%; object-fit: cover; }
.blog-card-body { padding: 18px 20px; display: flex; flex-direction: column; flex: 1; }
.blog-card-meta { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.blog-card-body h3 { font-size: 17px; line-height: 1.35; margin-bottom: 8px; }
.blog-card-body h3 a { color: var(--blue-dark); }
.blog-card-body h3 a:hover { color: var(--blue); }
.blog-card-body p { color: var(--muted); font-size: 14px; flex: 1; }
.blog-card-link { margin-top: 12px; color: var(--accent); font-weight: 700; font-size: 14px; }

/* ---------------- Why grid ---------------- */

.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.why-item { text-align: center; padding: 28px 22px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); }
.why-icon {
  width: 60px; height: 60px; margin: 0 auto 16px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), #1d7bc4); color: #fff;
  font-size: 26px; font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.why-item h3 { color: var(--blue-dark); margin-bottom: 8px; font-size: 17px; }
.why-item p { color: var(--muted); font-size: 14px; }

/* ---------------- CTA banner ---------------- */

.cta-banner { background: linear-gradient(120deg, var(--blue-dark), var(--blue)); color: #fff; padding: 60px 0; }
.cta-inner { text-align: center; }
.cta-inner h2 { font-size: 30px; margin-bottom: 10px; }
.cta-inner p { color: #d7e6f5; margin-bottom: 26px; font-size: 17px; }
.cta-inner .hero-cta { justify-content: center; margin-bottom: 0; }

/* ---------------- Breadcrumb & page hero ---------------- */

.breadcrumb { background: var(--bg-alt); border-bottom: 1px solid var(--border); font-size: 14px; padding: 12px 0; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb span { color: var(--text); }

.page-hero { background: linear-gradient(120deg, var(--blue-dark), var(--blue)); color: #fff; padding: 54px 0; }
.page-hero h1 { font-size: 34px; margin-bottom: 10px; }
.page-hero p { color: #d7e6f5; font-size: 17px; max-width: 800px; }
.accent { color: var(--accent); }

/* ---------------- Product detail ---------------- */

.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.product-detail-img img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; }
.product-detail-info h1 { color: var(--blue-dark); font-size: 30px; margin-bottom: 8px; }
.product-tagline { color: var(--accent); font-weight: 700; font-size: 16px; margin-bottom: 12px; }
.product-summary { color: var(--muted); font-size: 16px; margin-bottom: 22px; }
.product-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.product-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.fact { background: var(--bg-alt); border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; display: flex; flex-direction: column; }
.fact span { font-size: 13px; color: var(--muted); }
.fact strong { color: var(--blue-dark); font-size: 15px; }

.product-detail-body { max-width: 860px; }
.product-block { margin-bottom: 36px; }
.product-block h2 { color: var(--blue-dark); font-size: 24px; margin-bottom: 14px; }
.product-description h2 { color: var(--blue-dark); font-size: 24px; margin-bottom: 14px; }
.product-description p { margin-bottom: 14px; }
.product-description ul, .product-description ol { margin: 0 0 16px 22px; }

.check-list { list-style: none; margin: 0; }
.check-list li { padding-left: 26px; position: relative; margin-bottom: 8px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: #16a34a; font-weight: 700; }

.spec-table { width: 100%; border-collapse: collapse; }
.spec-table th, .spec-table td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; font-size: 15px; }
.spec-table th { background: var(--bg-alt); color: var(--blue-dark); width: 38%; }

.app-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.tag { background: #eef4fb; border: 1px solid #d3e2f2; color: var(--blue); padding: 5px 14px; border-radius: 999px; font-size: 13px; }

.faq-item { border: 1px solid var(--border); border-radius: 8px; margin-bottom: 10px; overflow: hidden; }
.faq-item summary { cursor: pointer; padding: 14px 18px; font-weight: 600; color: var(--blue-dark); background: #fff; list-style: none; position: relative; padding-right: 40px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 16px; top: 12px; font-size: 20px; color: var(--accent); }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 4px 18px 16px; color: var(--muted); }

/* ---------------- About ---------------- */

.about-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; align-items: start; }
.about-text h2 { color: var(--blue-dark); margin: 22px 0 12px; font-size: 24px; }
.about-text h2:first-child { margin-top: 0; }
.about-text p { margin-bottom: 14px; }
.about-side { position: sticky; top: 20px; }
.about-card { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; }
.about-card h3 { color: var(--blue-dark); margin-bottom: 16px; }
.about-facts { list-style: none; margin-bottom: 20px; }
.about-facts li { display: flex; flex-direction: column; padding: 10px 0; border-bottom: 1px solid var(--border); }
.about-facts span { font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); }
.about-facts strong { font-size: 15px; color: var(--text); }

.mini-category-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.mini-category {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; align-items: center; gap: 10px; padding-bottom: 14px;
  transition: box-shadow 0.2s ease;
}
.mini-category:hover { box-shadow: var(--shadow-lg); }
.mini-category img { width: 100%; height: 110px; object-fit: cover; }
.mini-category span { font-size: 13px; font-weight: 600; color: var(--blue-dark); text-align: center; padding: 0 10px; }
.mini-category-list { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.mini-category-list a { color: var(--blue); font-size: 14px; }
.mini-category-list a:hover { text-decoration: underline; }

/* ---------------- Post ---------------- */

.post-container { max-width: 860px; }
.post-header { margin-bottom: 24px; }
.post-header h1 { color: var(--blue-dark); font-size: 32px; line-height: 1.3; margin-bottom: 14px; }
.post-meta { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 14px; align-items: center; }
.post-meta .tag { text-decoration: none; }
.post-cover { margin-bottom: 28px; }
.post-cover img { border-radius: var(--radius); width: 100%; }
.post-content { font-size: 16px; }
.post-content h2 { color: var(--blue-dark); font-size: 24px; margin: 28px 0 12px; }
.post-content h3 { color: var(--blue-dark); font-size: 19px; margin: 22px 0 10px; }
.post-content p { margin-bottom: 16px; }
.post-content ul, .post-content ol { margin: 0 0 16px 24px; }
.post-content li { margin-bottom: 6px; }
.post-content strong { color: var(--blue-dark); }

/* ---------------- Comments ---------------- */

.comments { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.comments h2 { color: var(--blue-dark); font-size: 22px; margin-bottom: 20px; }
.comment-list { margin-bottom: 28px; }
.comment { background: var(--bg-alt); border: 1px solid var(--border); border-radius: 8px; padding: 16px 18px; margin-bottom: 12px; }
.comment-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.comment-head strong { color: var(--blue-dark); }
.comment-head span { color: var(--muted); font-size: 13px; }
.comment p { font-size: 15px; }
.no-comments { color: var(--muted); margin-bottom: 24px; }
.comment-form-wrap { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.comment-form-wrap h3 { color: var(--blue-dark); margin-bottom: 16px; }

/* ---------------- Forms ---------------- */

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-weight: 600; font-size: 14px; color: var(--text); margin-bottom: 6px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 15px; font-family: inherit; background: #fff; color: var(--text); transition: border-color 0.2s ease;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { outline: none; border-color: var(--blue); }
.form-field textarea { resize: vertical; }
.form-note { color: var(--muted); font-size: 13px; margin-top: 10px; }
.form-hint { color: var(--muted); font-size: 13px; margin-top: 6px; }
.hp-field { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }

.contact-grid { display: grid; grid-template-columns: 3fr 2fr; gap: 40px; align-items: start; }
.contact-form-wrap { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.contact-form-wrap h2 { color: var(--blue-dark); margin-bottom: 20px; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-card { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.contact-card h3 { color: var(--blue-dark); margin-bottom: 14px; }
.contact-list { list-style: none; }
.contact-list li { display: flex; flex-direction: column; padding: 10px 0; border-bottom: 1px solid var(--border); }
.contact-label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); margin-bottom: 2px; }
.contact-list a { color: var(--blue); font-weight: 600; word-break: break-word; }
.contact-whatsapp-cta { margin-top: 18px; }

/* ---------------- Flash ---------------- */

.flash { padding: 14px 20px; font-weight: 600; }
.flash-success { background: #ecfdf5; color: #065f46; border-bottom: 1px solid #a7f3d0; }
.flash-error { background: #fef2f2; color: #991b1b; border-bottom: 1px solid #fecaca; }

/* ---------------- Footer ---------------- */

.site-footer { background: var(--blue-darker); color: #b9cde0; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.3fr 1.3fr; gap: 36px; padding: 56px 20px 40px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer-col p { font-size: 14px; line-height: 1.7; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 9px; font-size: 14px; }
.footer-col a { color: #b9cde0; }
.footer-col a:hover { color: var(--accent); }
.footer-cert { display: inline-block; margin-top: 14px; background: rgba(255,255,255,0.1); padding: 5px 12px; border-radius: 999px; font-size: 12px; color: #e6f0f9; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding: 18px 0; font-size: 13px; color: #8ba3ba; text-align: center; }

/* ---------------- WhatsApp float ---------------- */

.whatsapp-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  background: var(--whatsapp); color: #fff; border-radius: 999px;
  display: flex; align-items: center; gap: 8px; padding: 13px 18px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.28); transition: transform 0.2s ease;
}
.whatsapp-float:hover { transform: translateY(-3px); color: #fff; background: #1fb556; }
.whatsapp-float-label { font-weight: 700; font-size: 14px; }

/* ---------------- Responsive ---------------- */

@media (max-width: 992px) {
  .category-grid, .product-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(3, 1fr); row-gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .product-detail-grid { grid-template-columns: 1fr; }
  .mini-category-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    background: #fff; flex-direction: column; align-items: flex-start; gap: 4px;
    padding: 90px 30px; box-shadow: -4px 0 20px rgba(0,0,0,0.12);
    transition: right 0.3s ease; z-index: 95;
  }
  .main-nav.open { right: 0; }
  .main-nav a { font-size: 17px; padding: 12px 0; width: 100%; border-bottom: 1px solid var(--border); }
  .nav-cta { margin-top: 16px; }
  .hero h1 { font-size: 32px; }
  .hero { min-height: 460px; }
  .form-row { grid-template-columns: 1fr; }
  .category-grid, .product-grid, .blog-grid { grid-template-columns: 1fr; }
  .mini-category-grid { grid-template-columns: repeat(2, 1fr); }
}