:root {
  --blue: #0757d8;
  --blue-dark: #02358e;
  --ink: #101828;
  --muted: #65758b;
  --line: #d9e5fb;
  --soft: #edf4ff;
  --green: #10a36e;
  --yellow: #ffc83d;
  --white: #fff;
  font-family: Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: #f7fbff; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.top-strip { background: var(--blue); color: white; text-align: center; padding: 7px 16px; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.site-header { background: white; border-bottom: 4px solid var(--blue); position: sticky; top: 0; z-index: 10; box-shadow: 0 8px 24px rgba(7,87,216,.08); }
.nav { max-width: 1180px; margin: auto; min-height: 82px; padding: 14px 18px; display: flex; align-items: center; gap: 22px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--blue); min-width: 190px; }
.brand strong { display: block; font-size: 28px; letter-spacing: .05em; }
.brand small { display: block; color: #081f4d; font-weight: 800; font-size: 11px; letter-spacing: .08em; }
.mark { width: 54px; display: grid; gap: 5px; transform: skewX(-23deg); }
.mark i { display: block; height: 9px; background: var(--blue); }
.nav-links, .nav-actions { display: flex; align-items: center; gap: 16px; font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.nav-links { flex: 1; }
.nav a:hover, .nav a.active { color: var(--blue); }
.cart-pill, .btn, button.btn { border: 0; border-radius: 8px; background: var(--blue); color: white; padding: 12px 16px; font-weight: 900; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.cart-pill b { background: white; color: var(--blue); min-width: 22px; min-height: 22px; border-radius: 50%; display: inline-grid; place-items: center; }
.btn.secondary { background: white; color: var(--blue); border: 1px solid var(--line); }
.btn.dark { background: var(--ink); }
.menu-toggle { display: none; }
.hero { background: linear-gradient(120deg, rgba(7,87,216,.96), rgba(2,53,142,.9)), url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1600&q=80") center/cover; color: white; }
.hero-inner { max-width: 1180px; margin: auto; padding: 82px 18px 68px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 38px; align-items: center; }
.eyebrow { color: var(--yellow); font-size: 12px; text-transform: uppercase; font-weight: 900; letter-spacing: .16em; }
h1 { font-size: clamp(38px, 6vw, 72px); line-height: .95; margin: 14px 0; letter-spacing: 0; }
h2 { font-size: clamp(28px, 4vw, 44px); margin: 0 0 14px; }
h3 { margin: 0 0 10px; }
p { color: var(--muted); line-height: 1.7; }
.hero p { color: #dbe8ff; font-size: 18px; max-width: 680px; }
.hero-card { background: rgba(255,255,255,.98); color: var(--ink); border-radius: 8px; padding: 20px; box-shadow: 0 24px 60px rgba(0,0,0,.2); }
.hero-card p { margin: 0 0 16px; }
.service-icons { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.service-icons a { background: white; border: 1px solid var(--line); border-radius: 8px; padding: 18px 12px; text-align: center; font-weight: 900; color: var(--blue); box-shadow: 0 8px 20px rgba(7,87,216,.08); }
.service-icons span { display: block; font-size: 26px; margin-bottom: 6px; }
.section { max-width: 1180px; margin: auto; padding: 56px 18px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 18px; margin-bottom: 22px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card, .info-card, .checkout-box { background: white; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; box-shadow: 0 12px 32px rgba(7,87,216,.07); }
.product-card img { height: 210px; width: 100%; object-fit: cover; }
.product-body { padding: 16px; }
.badge { display: inline-flex; background: #e6f7ef; color: #08794f; padding: 6px 9px; border-radius: 999px; font-size: 11px; font-weight: 900; text-transform: uppercase; }
.price { color: var(--blue); font-size: 22px; font-weight: 900; }
.old-price { color: var(--muted); text-decoration: line-through; margin-left: 8px; font-size: 14px; }
.card-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.page-title { background: white; border-bottom: 1px solid var(--line); }
.page-title .section { padding-top: 42px; padding-bottom: 38px; }
.shop-layout { display: grid; grid-template-columns: 260px 1fr; gap: 24px; align-items: start; }
.filters { background: white; border: 1px solid var(--line); border-radius: 8px; padding: 18px; position: sticky; top: 112px; }
.filters label, .form label { display: block; font-weight: 800; margin: 12px 0 7px; }
.input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 12px; font: inherit; background: white; }
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.product-detail img { border-radius: 8px; height: 460px; width: 100%; object-fit: cover; }
.spec-list { padding: 0; list-style: none; display: grid; gap: 10px; }
.spec-list li { background: var(--soft); border: 1px solid var(--line); border-radius: 8px; padding: 12px; }
.table { width: 100%; border-collapse: collapse; background: white; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.table th, .table td { padding: 14px; border-bottom: 1px solid var(--line); text-align: left; }
.qty { width: 72px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.info-card { padding: 22px; }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.steps .info-card:before { counter-increment: step; content: counter(step); width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; color: white; background: var(--blue); font-weight: 900; margin-bottom: 12px; }
.footer { background: #061b45; color: white; margin-top: 42px; }
.footer-grid { max-width: 1180px; margin: auto; padding: 44px 18px; display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 24px; }
.footer p, .footer a { color: #c7d8ff; }
.footer a { display: block; margin: 9px 0; }
.copyright { max-width: 1180px; margin: auto; padding: 18px; border-top: 1px solid rgba(255,255,255,.14); }
.notice { padding: 14px; border-radius: 8px; background: #e6f7ef; color: #08794f; font-weight: 800; margin-bottom: 18px; }

@media (max-width: 900px) {
  .nav { flex-wrap: wrap; }
  .menu-toggle { display: inline-flex; margin-left: auto; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; background: white; color: var(--blue); font-weight: 900; }
  .nav-links { display: none; width: 100%; flex-direction: column; align-items: flex-start; }
  .nav-links.open { display: flex; }
  .nav-actions { width: 100%; justify-content: space-between; }
  .hero-inner, .shop-layout, .product-detail, .two-col { grid-template-columns: 1fr; }
  .grid, .steps, .service-icons, .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .grid, .steps, .service-icons, .footer-grid { grid-template-columns: 1fr; }
  .brand strong { font-size: 24px; }
  .hero-inner { padding-top: 54px; }
  .card-actions { grid-template-columns: 1fr; }
}