:root {
  --ink: #0f1623;
  --ink-2: #1c2638;
  --paper: #f6f7fb;
  --card: #ffffff;
  --line: #e1e5ee;
  --muted: #5d6b82;
  --warm: #ffb703;
  --cyan: #19c3d6;
  --magenta: #e63ea0;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(15, 22, 35, 0.08);
  --sans: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; }
svg { display: inline-block; vertical-align: middle; }

/* LED strip accent */
.led-bar {
  height: 5px;
  background: linear-gradient(90deg, #ffb703, #ff7b00, #e63ea0, #7b5cff, #19c3d6, #2ad17a, #ffb703);
}

/* header */
.header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--ink);
  color: #fff;
}
.header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.8rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 0.65rem; }
.brand__mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: radial-gradient(circle at 50% 40%, #fff3c4 0%, var(--warm) 45%, #ff7b00 100%);
  display: grid;
  place-items: center;
  box-shadow: 0 0 18px rgba(255, 183, 3, 0.55);
}
.brand__title { font-size: 1.2rem; font-weight: 800; letter-spacing: -0.01em; line-height: 1.1; }
.brand__tagline { font-size: 0.64rem; color: #9fb0c8; text-transform: uppercase; letter-spacing: 0.1em; }

.nav { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.nav__link {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #cfd9e8;
  transition: background 0.2s, color 0.2s;
}
.nav__link:hover { background: var(--ink-2); color: #fff; }
.nav__link--active { background: var(--warm); color: var(--ink); }

/* hero */
.hero {
  background: radial-gradient(1200px 400px at 85% -10%, rgba(25, 195, 214, 0.25), transparent 60%),
              radial-gradient(900px 400px at 10% 120%, rgba(230, 62, 160, 0.22), transparent 60%),
              var(--ink);
  color: #fff;
}
.hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1.25rem 4.5rem;
}
.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--warm);
  font-weight: 700;
  margin-bottom: 0.9rem;
}
.hero__title {
  font-size: clamp(2.1rem, 5.5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  max-width: 14em;
}
.hero__title span {
  background: linear-gradient(90deg, #ffb703, #ff7b00 40%, #e63ea0 75%, #19c3d6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead { max-width: 40em; color: #c3cfe0; font-size: 1.05rem; margin: 0 0 1.75rem; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.92rem;
  background: var(--warm);
  color: var(--ink);
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255, 183, 3, 0.35); }
.btn--ghost { background: transparent; color: #fff; border: 1.5px solid #3a4a66; margin-left: 0.5rem; }
.btn--ghost:hover { box-shadow: none; border-color: var(--warm); }

/* sections */
.section { max-width: 1200px; margin: 3rem auto; padding: 0 1.25rem; }
.section__head { display: flex; align-items: baseline; gap: 0.8rem; margin-bottom: 1.25rem; }
.section__head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(90deg, #c4ccda, #c4ccda 6px, transparent 6px, transparent 12px);
}
.section__title { margin: 0; font-size: 1.1rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; }
.section__note { font-size: 0.78rem; color: var(--muted); white-space: nowrap; }

/* category cards */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.25rem; }
.cat-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}
.cat-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(15, 22, 35, 0.14); }
.cat-card__glow { height: 120px; display: grid; place-items: center; }
.cat-card__body { padding: 1.1rem 1.2rem 1.3rem; display: flex; flex-direction: column; flex: 1; }
.cat-card__title { margin: 0 0 0.3rem; font-size: 1.05rem; }
.cat-card__text { margin: 0 0 1rem; font-size: 0.9rem; color: var(--muted); flex: 1; }
.cat-card__more { font-weight: 700; font-size: 0.85rem; color: var(--ink); }
.cat-card__more::after { content: " →"; }

.glow--warm { background: linear-gradient(135deg, #2b1d05, #ff9d00); }
.glow--rgb { background: linear-gradient(135deg, #1b1244, #e63ea0 55%, #19c3d6); }
.glow--cyan { background: linear-gradient(135deg, #062a33, #19c3d6 70%, #7b5cff); }

/* product grid */
.page-head { background: var(--ink); color: #fff; }
.page-head__inner { max-width: 1200px; margin: 0 auto; padding: 2.5rem 1.25rem 2.75rem; }
.page-head h1 { margin: 0 0 0.5rem; font-size: clamp(1.7rem, 4vw, 2.5rem); letter-spacing: -0.02em; }
.page-head p { margin: 0; color: #c3cfe0; max-width: 46em; }
.crumbs { font-size: 0.78rem; color: #9fb0c8; margin-bottom: 0.8rem; }
.crumbs a:hover { color: var(--warm); }

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.product {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.product__vis { height: 96px; position: relative; display: grid; place-items: center; }
.product__vis svg { position: relative; z-index: 1; }
.strip {
  display: block;
  width: 78%;
  height: 14px;
  border-radius: 3px;
  box-shadow: 0 0 22px rgba(255, 255, 255, 0.55), 0 0 6px rgba(255, 255, 255, 0.8);
}
.strip--round { height: 18px; border-radius: 999px; }
.product__body { padding: 1rem 1.1rem 1.2rem; display: flex; flex-direction: column; gap: 0.6rem; flex: 1; }
.product__name { margin: 0; font-size: 0.98rem; line-height: 1.3; }
.product__desc { margin: 0; font-size: 0.85rem; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: auto; }
.chip {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  background: #eef1f7;
  color: #3b4a63;
}

/* about */
.about { max-width: 860px; margin: 2rem auto; padding: 0 1.25rem; }
.about__hero {
  background: linear-gradient(135deg, #fff8e1 0%, #fff 100%);
  border: 2px solid var(--warm);
  border-radius: var(--radius);
  padding: 2.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 2.5rem;
}
.about__title { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.05; margin: 0 0 1rem; letter-spacing: -0.03em; }
.about__lead { font-size: 1.05rem; color: #3b4a63; margin: 0 0 1rem; }
.about__lead:last-child { margin-bottom: 0; }
.about__section { margin-bottom: 2rem; }
.about__section p { margin: 0 0 0.9rem; color: #2f3c53; font-size: 0.98rem; }

/* footer */
.footer { background: var(--ink); color: #9fb0c8; margin-top: 3.5rem; font-size: 0.8rem; }
.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer__links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.footer a:hover { color: var(--warm); }

@media (max-width: 600px) {
  .hero__inner { padding: 2.5rem 1.25rem 3rem; }
  .btn--ghost { margin: 0.6rem 0 0; }
  .about__hero { padding: 1.5rem; }
  .section__note { display: none; }
}