:root {
  --ink: #07111f;
  --ink-soft: #29405a;
  --paper: #f4f7fb;
  --card: #ffffff;
  --line: #dbe6f2;
  --blue: #2d7cff;
  --blue-deep: #0f47c7;
  --steel: #5f7696;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "Be Vietnam Pro", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: linear-gradient(180deg, #f7faff 0%, var(--paper) 100%);
  line-height: 1.6;
}

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

.hero {
  background: radial-gradient(circle at top left, rgba(45,124,255,.25), transparent 38%), var(--ink);
  color: #f3f7ff;
  padding: 64px 20px 56px;
}
.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
}
.hero-tag, .eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #88b6ff;
  border: 1px solid rgba(136,182,255,.35);
  border-radius: 999px;
  padding: 6px 12px;
}
.hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  line-height: 1.05;
  margin: 20px 0 14px;
  letter-spacing: -0.02em;
}
.hero h1 em { color: #7fb5ff; font-style: normal; }
.hero .lead {
  max-width: 720px;
  font-size: 1.05rem;
  color: #b9cfe8;
  margin-bottom: 34px;
}
.hero-index {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}
.hero-index a {
  text-decoration: none;
  border: 1px solid rgba(136,182,255,.2);
  border-radius: 14px;
  padding: 16px 14px;
  background: rgba(255,255,255,.04);
  transition: transform .2s ease, background .2s ease;
}
.hero-index a:hover, .hero-index a:focus-visible {
  background: rgba(45,124,255,.16);
  transform: translateY(-1px);
}
.hero-index .no { display: block; font-family: var(--mono); font-size: 0.7rem; color: #7fb5ff; margin-bottom: 6px; }
.hero-index .nm { display: block; font-weight: 700; margin-bottom: 4px; }
.hero-index .ct { display: block; color: #a8c4e3; font-size: 0.9rem; }

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(244,247,251,.86);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
}
.nav a {
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--steel);
  padding: 14px 10px;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.nav a:hover, .nav a:focus-visible, .nav a.active {
  color: var(--blue-deep);
  border-bottom-color: var(--blue);
}
.nav-brand {
  margin-right: 12px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.nav-brand span { color: var(--blue); }

.intro {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 20px 8px;
}
.intro-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 26px 28px;
  box-shadow: 0 18px 50px rgba(7,17,31,.05);
}
.intro-card h2 {
  margin: 10px 0 8px;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
}
.intro-card p:last-child {
  margin: 0;
  color: var(--ink-soft);
}

.catalog {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 20px 56px;
}
.product-list {
  display: grid;
  gap: 20px;
}
.product-card {
  display: grid;
  grid-template-columns: minmax(230px, 320px) 1fr;
  gap: 24px;
  padding: 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 12px 34px rgba(7,17,31,.04);
}
.product-card__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(140deg, #f3f8ff, #edf3fb);
  border-radius: 18px;
  padding: 16px;
  min-height: 250px;
}
.product-card__visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.product-card__header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
  margin-bottom: 12px;
}
.product-card__header h3 {
  margin: 8px 0 0;
  font-size: 1.3rem;
}
.product-card__eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-deep);
  margin: 0;
}
.product-card__role {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blue-deep);
  background: #eaf2ff;
  border-radius: 999px;
  padding: 6px 10px;
  white-space: nowrap;
}
.product-card__description {
  margin: 0 0 14px;
  color: var(--ink-soft);
}
.product-card__specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin: 0 0 16px;
}
.product-card__specs div {
  background: #f7faff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}
.product-card__specs dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--steel);
}
.product-card__specs dd {
  margin: 4px 0 0;
  font-weight: 700;
}
.product-card__highlights {
  margin-bottom: 14px;
}
.product-card__highlights h4 {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}
.product-card__highlights ul {
  margin: 0;
  padding-left: 18px;
  color: var(--ink-soft);
}
.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.product-card__tags span {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.contact {
  background: var(--ink);
  color: #f5f8ff;
}
.contact-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 20px 56px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}
.contact h2 {
  margin: 10px 0 8px;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
}
.contact p { color: #b9cfe8; }
.contact-box {
  border: 1px solid rgba(136,182,255,.22);
  border-radius: 20px;
  padding: 20px;
  background: rgba(255,255,255,.03);
}
.contact-box .row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(136,182,255,.15);
}
.contact-box .row:last-child { border-bottom: 0; }
.contact-box .k { color: #88b6ff; }
.contact-box .v { font-family: var(--mono); font-size: 0.86rem; }

@media (max-width: 860px) {
  .product-card { grid-template-columns: 1fr; }
  .product-card__visual { min-height: 200px; }
  .contact-inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero { padding: 48px 16px 42px; }
  .hero-inner, .intro, .catalog { padding-left: 16px; padding-right: 16px; }
  .product-card { padding: 16px; border-radius: 16px; }
  .product-card__header { flex-direction: column; }
  .product-card__role { white-space: normal; }
}