* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; color: #172033; background: #ffffff; line-height: 1.6; }
.container { width: min(1140px, 92%); margin: 0 auto; }
a { color: inherit; }
.top-disclosure { background: #fff3cd; color: #3a2a00; text-align: center; font-size: 13px; padding: 9px 14px; font-weight: 700; }
.site-header { background: #101827; color: #ffffff; padding: 18px 0; position: sticky; top: 0; z-index: 10; }
.nav { display: flex; justify-content: space-between; align-items: center; gap: 22px; }
.logo { font-size: 21px; font-weight: 900; }
nav { display: flex; gap: 17px; flex-wrap: wrap; }
nav a { text-decoration: none; font-size: 14px; opacity: 0.9; }
.hero { background: linear-gradient(135deg, #121b2e, #314f89); color: #ffffff; padding: 82px 0; }
.hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 42px; align-items: center; }
.eyebrow { color: #ffb703; text-transform: uppercase; letter-spacing: 1.5px; font-size: 13px; font-weight: 900; }
h1 { font-size: clamp(36px, 6vw, 62px); line-height: 1.04; margin: 12px 0 18px; }
h2 { font-size: clamp(28px, 4vw, 42px); line-height: 1.15; margin: 0 0 14px; }
h3 { margin-top: 0; }
.hero-text { font-size: 19px; max-width: 720px; opacity: 0.95; }
.hero-buttons { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 18px; }
.btn { display: inline-block; padding: 13px 22px; border-radius: 999px; text-decoration: none; font-weight: 900; border: 2px solid transparent; }
.btn.primary { background: #ffb703; color: #101827; }
.btn.secondary { color: #ffffff; border-color: #ffffff; }
.dark-btn { background: #101827; color: #ffffff; margin-top: 8px; }
.product-btn { background: #ffb703; color: #101827; width: 100%; text-align: center; border-radius: 12px; }
.small-note { opacity: 0.78; font-size: 14px; }
.hero-card { background: #ffffff; color: #172033; border-radius: 22px; padding: 30px; box-shadow: 0 24px 70px rgba(0, 0, 0, 0.25); }
.hero-card ul { padding-left: 22px; }
.section { padding: 76px 0; }
.section.light { background: #f4f7fb; }
.section.dark { background: #101827; color: #ffffff; }
.section-intro { max-width: 760px; font-size: 18px; }
.category-grid, .product-grid, .guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 32px; }
.category-card, .product-card, .guide-card { background: #ffffff; border: 1px solid #e5eaf3; border-radius: 18px; padding: 24px; box-shadow: 0 10px 28px rgba(16, 24, 39, 0.06); }
.icon { font-size: 34px; margin-bottom: 12px; }
.product-image { height: 160px; border-radius: 14px; background: #e9eef8; color: #68748a; display: grid; place-items: center; font-weight: 800; margin-bottom: 18px; }
.text-link { color: #1d5fd1; font-weight: 900; text-decoration: none; }
.split { display: flex; justify-content: space-between; align-items: center; gap: 28px; }
.footer { background: #070b14; color: #ffffff; padding: 42px 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 28px; }
.footer a { display: block; margin: 8px 0; text-decoration: none; opacity: 0.86; }
.footer-disclosure { color: #ffb703; font-weight: 800; }
.article { padding: 70px 0; }
.article h1 { color: #101827; font-size: clamp(34px, 5vw, 54px); }
.article-content { max-width: 900px; }
.callout { background: #fff3cd; border-left: 5px solid #ffb703; padding: 18px; border-radius: 12px; margin: 24px 0; }
.product-table { width: 100%; border-collapse: collapse; margin: 26px 0; }
.product-table th, .product-table td { border: 1px solid #dfe5ef; padding: 13px; text-align: left; }
.product-table th { background: #f4f7fb; }
@media (max-width: 920px) {
  .hero-grid, .category-grid, .product-grid, .guide-grid, .footer-grid { grid-template-columns: 1fr; }
  .nav, .split { flex-direction: column; align-items: flex-start; }
}