:root {
  color-scheme: dark;
  --ink: #f3f8ff;
  --muted: #bfd2e6;
  --soft: #8fb2d3;
  --line: rgba(168, 209, 246, 0.22);
  --panel: rgba(9, 39, 73, 0.76);
  --panel-strong: rgba(13, 53, 96, 0.92);
  --blue-950: #06182e;
  --blue-900: #082645;
  --blue-850: #0b315d;
  --blue-700: #145488;
  --blue-400: #58b1f5;
  --mint: #77d6c6;
  --sun: #f4ca64;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(165deg, rgba(119, 214, 198, 0.14) 0%, transparent 34%),
    linear-gradient(25deg, transparent 0%, rgba(244, 202, 100, 0.08) 78%, rgba(244, 202, 100, 0.13) 100%),
    linear-gradient(140deg, var(--blue-950) 0%, var(--blue-900) 46%, #0d3b66 100%);
  color: var(--ink);
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.62), transparent 84%);
}

a {
  color: inherit;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 16px 0;
}

.site-header::before {
  position: absolute;
  inset: 8px -12px;
  z-index: -1;
  content: "";
  border: 1px solid transparent;
  border-radius: 999px;
  background: rgba(4, 19, 37, 0);
  backdrop-filter: blur(0);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    backdrop-filter 180ms ease;
}

.site-header.is-scrolled::before {
  border-color: var(--line);
  background: rgba(4, 19, 37, 0.74);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  min-height: 40px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
  outline: none;
}

.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: clamp(560px, 78vh, 740px);
  padding: 76px 0 54px;
  overflow: hidden;
}

.hero__backdrop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(6, 24, 46, 0.98) 0%, rgba(8, 38, 69, 0.82) 48%, rgba(20, 84, 136, 0.58) 100%),
    url("assets/brand/NSC-logo-large.png") right -8vw center / min(58vw, 720px) auto no-repeat;
}

.hero__backdrop::after {
  position: absolute;
  inset: auto 0 0;
  height: 180px;
  content: "";
  background: linear-gradient(to bottom, transparent, rgba(6, 24, 46, 0.92));
}

.hero__content {
  position: relative;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero__logo {
  width: min(620px, 100%);
  height: auto;
  margin-bottom: 42px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--mint);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 20px;
  font-size: clamp(3rem, 7.4vw, 6rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2rem, 5vw, 4.6rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 14px;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.08;
}

.hero__lede {
  max-width: 700px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}

.button--primary {
  border-color: rgba(119, 214, 198, 0.48);
  background: var(--mint);
  color: #062033;
}

.button--primary:hover,
.button--primary:focus-visible {
  background: #9ee6da;
}

.button--secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
}

.button--secondary:hover,
.button--secondary:focus-visible {
  background: rgba(255, 255, 255, 0.14);
}

.intro,
.section,
.community,
.contact {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: 42px;
  padding: 70px 0 38px;
}

.intro__copy p {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--ink);
  font-size: clamp(1.5rem, 3.5vw, 2.45rem);
  line-height: 1.14;
}

.intro__facts {
  display: grid;
  gap: 12px;
  margin: 0;
}

.intro__facts div {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.intro__facts dt {
  color: var(--soft);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.intro__facts dd {
  margin: 0;
  color: var(--ink);
  font-weight: 800;
}

.section {
  padding: 80px 0;
}

.section__heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.2fr);
  margin-bottom: 30px;
}

.section__heading h2 {
  grid-column: 1;
  max-width: 820px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.product {
  min-height: 360px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.product--featured {
  background:
    linear-gradient(150deg, rgba(119, 214, 198, 0.16), transparent 42%),
    var(--panel-strong);
}

.product__meta {
  margin-bottom: 44px;
  color: var(--sun);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.product p {
  color: var(--muted);
}

.text-link {
  display: inline-flex;
  margin-top: 12px;
  color: var(--mint);
  font-weight: 800;
  text-decoration: none;
}

.text-link:hover,
.text-link:focus-visible {
  color: #a9eee3;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.community {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1fr);
  gap: 58px;
  padding: 70px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.community__body p {
  color: var(--muted);
  font-size: 1.12rem;
}

.principles {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.principles li {
  padding: 16px 18px;
  border-left: 4px solid var(--blue-400);
  background: rgba(255, 255, 255, 0.06);
}

.contact {
  padding: 86px 0;
}

.contact__panel {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: clamp(26px, 5vw, 48px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(88, 177, 245, 0.14), transparent 48%),
    rgba(3, 18, 35, 0.68);
}

.contact__panel h2 {
  margin-bottom: 14px;
}

.contact__panel p:last-child {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.14rem;
}

.contact__panel a {
  color: var(--mint);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--soft);
  font-size: 0.95rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

@media (max-width: 900px) {
  .hero {
    min-height: 650px;
  }

  .hero__backdrop {
    background:
      linear-gradient(115deg, rgba(6, 24, 46, 0.98) 0%, rgba(8, 38, 69, 0.9) 62%, rgba(20, 84, 136, 0.58) 100%),
      url("assets/brand/NSC-logo-large.png") right -120px top 118px / 420px auto no-repeat;
  }

  .intro,
  .community {
    grid-template-columns: 1fr;
  }

  .section__heading {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .product {
    min-height: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    width: min(100% - 24px, 1180px);
  }

  .site-header::before {
    border-radius: 18px;
  }

  .site-nav {
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 2px;
  }

  .site-nav a {
    min-height: 34px;
    padding: 6px 8px;
    font-size: 0.86rem;
  }

  .brand span {
    display: none;
  }

  .hero {
    min-height: 610px;
    padding-top: 70px;
  }

  .hero__logo {
    margin-bottom: 30px;
  }

  h1 {
    font-size: clamp(2.7rem, 16vw, 4rem);
  }

  .intro,
  .section,
  .community,
  .contact {
    width: min(100% - 24px, 1180px);
  }

  .intro__facts div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .contact__panel {
    grid-template-columns: 1fr;
  }

  .contact__panel img {
    width: 70px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    width: min(100% - 24px, 1180px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}