:root {
  color-scheme: dark;
  --ink: #f4f8fb;
  --muted: #9eabb7;
  --blue: #8bd6f2;
  --blue-dark: #071b27;
  --panel: #0d1821;
  --panel-2: #13222d;
  --line: rgba(255,255,255,.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #071018;
  color: var(--ink);
  font: 16px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 84px;
  padding: 14px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(7,16,24,.88);
  backdrop-filter: blur(18px);
}
.brand { display: grid; text-decoration: none; }
.brand-name { font-size: 1.65rem; font-weight: 800; letter-spacing: -.04em; }
.brand-line { color: var(--blue); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }
.cart-button, .add-button, .send-button, .copy-button {
  border: 0;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 750;
}
.cart-button { padding: 11px 15px; background: var(--ink); color: #071018; }
.cart-count { display: inline-grid; place-items: center; min-width: 24px; height: 24px; margin-left: 7px; border-radius: 99px; background: #0f3245; color: #fff; }

main { overflow: hidden; }
.intro {
  min-height: 540px;
  display: grid;
  align-content: center;
  padding: 90px max(5vw, calc((100vw - 1240px)/2));
  background:
    radial-gradient(circle at 78% 28%, rgba(37,151,196,.25), transparent 27%),
    linear-gradient(135deg, #071018 0%, #0b1d29 58%, #102a38 100%);
  border-bottom: 1px solid var(--line);
}
.intro h1 { max-width: 900px; margin: 8px 0 28px; font-size: clamp(3rem, 7vw, 6.7rem); line-height: .96; letter-spacing: -.055em; }
.intro-copy { max-width: 780px; margin: 0; color: #c7d0d7; font-size: clamp(1.05rem, 1.8vw, 1.35rem); }
.eyebrow { margin: 0; color: var(--blue); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }

.catalog, .process { max-width: 1240px; margin: auto; padding: 96px 24px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 42px; }
.section-heading h2, .process h2, .cart-head h2 { margin: 6px 0 0; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1; letter-spacing: -.04em; }
.section-heading > p { max-width: 480px; margin: 0; color: var(--muted); }
.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.product-card { overflow: hidden; display: grid; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.product-visual {
  min-height: 270px;
  display: grid;
  place-content: center;
  justify-items: center;
  background:
    linear-gradient(rgba(139,214,242,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,214,242,.09) 1px, transparent 1px),
    radial-gradient(circle, #16394a, #0a151e 65%);
  background-size: 24px 24px, 24px 24px, auto;
}
.product-visual-alt { background: linear-gradient(rgba(139,214,242,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(139,214,242,.07) 1px, transparent 1px), radial-gradient(circle, #26394a, #0a151e 65%); background-size: 18px 18px, 18px 18px, auto; }
.product-visual span { color: var(--muted); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; }
.product-visual strong { color: rgba(139,214,242,.88); font-size: 5rem; letter-spacing: -.08em; }
.product-photo { padding: 26px; background: radial-gradient(circle, #16394a, #0a151e 72%); }
.product-photo img { display: block; width: min(100%, 340px); max-height: 310px; object-fit: contain; border-radius: 5px; box-shadow: 0 18px 50px rgba(0,0,0,.35); }
.product-gallery { display: grid; grid-template-columns: 1.08fr .92fr; gap: 2px; min-height: 320px; background: #071018; }
.product-gallery figure { position: relative; min-width: 0; margin: 0; overflow: hidden; }
.product-gallery img { display: block; width: 100%; height: 320px; object-fit: cover; }
.product-gallery figure:first-child img { object-position: 50% 50%; }
.product-gallery figure:last-child img { object-position: 50% 58%; }
.product-gallery figcaption { position: absolute; inset: auto 12px 12px; width: max-content; max-width: calc(100% - 24px); padding: 5px 8px; border: 1px solid rgba(255,255,255,.16); border-radius: 3px; background: rgba(7,16,24,.82); color: #d7e1e7; font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; backdrop-filter: blur(8px); }
.product-body { display: flex; flex-direction: column; padding: 30px; }
.product-code { margin: 0 0 8px; color: var(--blue); font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.product-body h3 { margin: 0 0 14px; font-size: 1.65rem; line-height: 1.15; }
.product-body > p:not(.product-code) { margin: 0; color: #c6cfd6; }
.product-body ul { padding-left: 20px; margin: 22px 0 30px; color: var(--muted); }
.product-buy { display: flex; justify-content: space-between; align-items: end; gap: 18px; margin-top: auto; padding-top: 24px; border-top: 1px solid var(--line); }
.price, .tax-note { display: block; }
.price { font-weight: 800; }
.tax-note { margin-top: 2px; color: var(--muted); font-size: .74rem; }
.price-break { display: block; margin-top: 4px; color: var(--blue); font-size: .78rem; }
.quantity-row { display: flex; align-items: center; gap: 8px; }
.quantity-row label { color: var(--muted); font-size: .82rem; }
.quantity-row input { width: 60px; padding: 9px 7px; border: 1px solid var(--line); border-radius: 4px; background: #071018; color: #fff; }
.add-button { padding: 10px 16px; background: var(--blue); color: var(--blue-dark); }

.process { border-top: 1px solid var(--line); }
.process h2 { margin-bottom: 38px; }
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.process-grid p { margin: 0; padding: 24px 0; border-top: 2px solid var(--blue); color: var(--muted); }
.process-grid span, .process-grid strong { display: block; }
.process-grid span { margin-bottom: 24px; color: var(--blue); font-family: ui-monospace, monospace; }
.process-grid strong { margin-bottom: 7px; color: var(--ink); font-size: 1.1rem; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 28px max(24px, calc((100vw - 1192px)/2)); border-top: 1px solid var(--line); color: var(--muted); }

.backdrop { position: fixed; inset: 0; z-index: 30; background: rgba(0,0,0,.68); }
.cart-panel {
  position: fixed;
  inset: 0 0 0 auto;
  z-index: 40;
  width: min(620px, 100%);
  padding: 30px;
  overflow-y: auto;
  background: #0b151d;
  border-left: 1px solid var(--line);
  transform: translateX(105%);
  transition: transform .24s ease;
}
.cart-panel.open { transform: none; }
.cart-head { display: flex; justify-content: space-between; align-items: start; margin-bottom: 28px; }
.close-button { padding: 0 8px; border: 0; background: transparent; color: #fff; cursor: pointer; font-size: 2.4rem; line-height: 1; }
.cart-items { display: grid; gap: 10px; }
.cart-line { display: grid; grid-template-columns: 1fr auto auto; gap: 14px; align-items: center; padding: 15px; background: var(--panel-2); border: 1px solid var(--line); border-radius: 5px; }
.cart-line-title, .cart-line-price { display: block; }
.cart-line-price { margin-top: 3px; color: var(--muted); font-size: .78rem; font-weight: 400; }
.cart-line input { width: 64px; padding: 7px; background: #071018; color: white; border: 1px solid var(--line); border-radius: 3px; }
.remove-item { border: 0; background: transparent; color: #ff9e9e; cursor: pointer; }
.cart-summary { margin-top: 14px; padding: 17px; border: 1px solid var(--line); background: #071018; }
.summary-row { display: flex; justify-content: space-between; gap: 20px; }
.summary-row + .summary-row { margin-top: 5px; }
.summary-row.total { margin-top: 11px; padding-top: 11px; border-top: 1px solid var(--line); font-weight: 800; }
.summary-note { margin: 10px 0 0; color: var(--muted); font-size: .74rem; }
.empty-cart { padding: 26px 0; color: var(--muted); }
.request-form { margin-top: 28px; padding-top: 28px; border-top: 1px solid var(--line); }
.customer-type { display: flex; gap: 22px; margin: 0 0 20px; padding: 0; border: 0; }
.customer-type legend { width: 100%; margin-bottom: 8px; font-weight: 750; }
.customer-type label { color: #d8e0e5; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-grid label { display: grid; gap: 6px; color: #cbd4da; font-size: .86rem; }
.field-grid .full { grid-column: 1 / -1; }
.field-grid input, .field-grid textarea { width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 4px; background: #071018; color: #fff; }
.field-grid textarea { resize: vertical; }
.form-note { color: var(--muted); font-size: .82rem; }
.send-button, .copy-button { width: 100%; padding: 13px 16px; }
.send-button { background: var(--blue); color: var(--blue-dark); }
.copy-button { margin-top: 9px; border: 1px solid var(--line); background: transparent; color: #fff; }
.form-status { min-height: 24px; color: var(--blue); font-size: .86rem; }

@media (max-width: 800px) {
  .brand-line { display: none; }
  .intro { min-height: 470px; padding-top: 70px; padding-bottom: 70px; }
  .section-heading, .product-buy { align-items: start; flex-direction: column; }
  .product-grid, .process-grid { grid-template-columns: 1fr; }
  .catalog, .process { padding-top: 68px; padding-bottom: 68px; }
}
@media (max-width: 520px) {
  .site-header { min-height: 70px; }
  .cart-button { font-size: .83rem; }
  .product-body, .cart-panel { padding: 22px; }
  .field-grid { grid-template-columns: 1fr; }
  .field-grid .full { grid-column: auto; }
  footer { flex-direction: column; }
  .product-gallery { grid-template-columns: 1fr 1fr; min-height: 250px; }
  .product-gallery img { height: 250px; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}