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

:root {
  --blue: #1a56db;
  --blue-dark: #1140b0;
  --blue-light: #e8f0fe;
  --orange: #f97316;
  --orange-dark: #ea6c0a;
  --dark: #0f172a;
  --mid: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --bg: #f8fafc;
  --white: #ffffff;
}

body { font-family: 'Inter', sans-serif; background: var(--white); color: var(--dark); line-height: 1.6; }

nav {
  background: var(--dark);
  padding: 0 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.logo { font-size: 1.5rem; font-weight: 900; color: var(--white); text-decoration: none; letter-spacing: -0.5px; }
.logo span { color: var(--orange); }
.nav-links { display: flex; gap: 2rem; }
.nav-links a { color: #94a3b8; text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--white); }
.nav-cta { background: var(--orange); color: var(--white); padding: 0.5rem 1.25rem; border-radius: 6px; text-decoration: none; font-weight: 600; font-size: 0.9rem; transition: background 0.2s; }
.nav-cta:hover { background: var(--orange-dark); }

footer { background: var(--dark); color: #94a3b8; text-align: center; padding: 2rem; font-size: 0.875rem; margin-top: 4rem; }
footer a { color: #94a3b8; text-decoration: none; }

.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
  padding: 80px 5% 90px;
  text-align: center;
}
.hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; color: var(--white); line-height: 1.1; margin-bottom: 1.25rem; }
.hero h1 span { color: var(--orange); }
.hero p { font-size: 1.2rem; color: #94a3b8; margin-bottom: 2.5rem; max-width: 600px; margin-left: auto; margin-right: auto; }

.btn { display: inline-block; padding: 0.75rem 1.75rem; border-radius: 8px; font-weight: 700; font-size: 1rem; cursor: pointer; border: none; transition: background 0.2s; }
.btn-orange { background: var(--orange); color: var(--white); }
.btn-orange:hover { background: var(--orange-dark); }
.btn-blue { background: var(--blue); color: var(--white); }
.btn-blue:hover { background: var(--blue-dark); }

.section { padding: 5rem 5%; }
.section-light { background: var(--bg); }
.section-title { font-size: 2rem; font-weight: 800; margin-bottom: 0.75rem; }
.section-sub { color: var(--muted); margin-bottom: 3rem; font-size: 1.05rem; }

.grid-3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1.25rem; }

.card { background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; transition: box-shadow 0.2s; }
.card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.1); }
.card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }
.card a { text-decoration: none; color: inherit; }

.form-box { background: var(--white); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; }
.form-box h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 1.5rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--mid); }
.form-group input, .form-group select, .form-group textarea {
  padding: 0.65rem 0.9rem; border: 1.5px solid var(--border); border-radius: 8px;
  font-family: 'Inter', sans-serif; font-size: 0.95rem; color: var(--dark);
  transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--blue);
}
.form-full { grid-column: 1 / -1; }
.form-submit { margin-top: 1rem; width: 100%; padding: 0.85rem; font-size: 1rem; font-weight: 700; background: var(--orange); color: var(--white); border: none; border-radius: 8px; cursor: pointer; }
.form-submit:hover { background: var(--orange-dark); }
.thank-you { display: none; background: #d1fae5; border: 1px solid #6ee7b7; border-radius: 8px; padding: 1.25rem; color: #065f46; font-weight: 600; text-align: center; margin-top: 1rem; }

.trust-bar { background: var(--dark); padding: 2rem 5%; display: flex; flex-wrap: wrap; gap: 2rem; justify-content: center; }
.trust-item { color: #94a3b8; font-size: 0.9rem; display: flex; align-items: center; gap: 0.5rem; }
.trust-item strong { color: var(--white); }

.steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 2rem; }
.step { text-align: center; }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 56px; height: 56px; background: var(--orange); color: var(--white); border-radius: 50%; font-size: 1.5rem; font-weight: 900; margin-bottom: 1rem; }
.step h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.step p { color: var(--muted); font-size: 0.95rem; }

.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; }
.cat-card { background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem 1.5rem; text-decoration: none; color: var(--dark); display: flex; align-items: center; gap: 1rem; transition: all 0.2s; }
.cat-card:hover { border-color: var(--blue); box-shadow: 0 4px 20px rgba(26,86,219,0.1); }
.cat-icon { font-size: 1.75rem; }
.cat-info { display: flex; flex-direction: column; }
.cat-name { font-weight: 700; font-size: 0.95rem; text-transform: capitalize; }
.cat-count { font-size: 0.8rem; color: var(--muted); }

.product-card { background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem; text-decoration: none; color: var(--dark); transition: all 0.2s; display: flex; flex-direction: column; gap: 0.5rem; }
.product-card:hover { border-color: var(--orange); box-shadow: 0 4px 20px rgba(249,115,22,0.1); }
.product-card .pcat { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--blue); font-weight: 600; }
.product-card .ptitle { font-weight: 700; font-size: 0.95rem; }
.product-card .pvol { font-size: 0.8rem; color: var(--muted); }

.breadcrumb { font-size: 0.85rem; color: var(--muted); margin-bottom: 1.5rem; }
.breadcrumb a { color: var(--blue); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

.page-layout { max-width: 1200px; margin: 0 auto; padding: 3rem 5%; }
.product-layout { display: grid; grid-template-columns: 1fr 360px; gap: 2.5rem; align-items: start; }
@media (max-width: 900px) { .product-layout { grid-template-columns: 1fr; } }

.sticky-sidebar { position: sticky; top: 80px; }

.faq { margin-top: 2.5rem; }
.faq-item { border-bottom: 1px solid var(--border); padding: 1.25rem 0; }
.faq-item h4 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }
.faq-item p { color: var(--muted); font-size: 0.95rem; }

.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.tag { background: var(--blue-light); color: var(--blue); padding: 0.35rem 0.75rem; border-radius: 20px; font-size: 0.85rem; font-weight: 600; text-decoration: none; }
.tag:hover { background: var(--blue); color: var(--white); }

.related-links { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1rem; }
.related-link { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 1rem; border: 1px solid var(--border); border-radius: 8px; text-decoration: none; color: var(--dark); transition: all 0.2s; }
.related-link:hover { border-color: var(--blue); background: var(--blue-light); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero { padding: 50px 5% 60px; }
}