:root {
  --bg-top: #f6f1e7;
  --bg-bottom: #e4efe6;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.94);
  --line: #c8d7cd;
  --text: #15232c;
  --muted: #465661;
  --accent: #0d6660;
  --accent-soft: #3f8679;
  --accent-warm: #b86f37;
  --shadow: 0 28px 80px rgba(21, 35, 44, 0.12);
  --font-display: "Chakra Petch", "Segoe UI", sans-serif;
  --font-body: "Space Grotesk", "Helvetica Neue", sans-serif;
  --focus: #0d6660;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at 12% -8%, rgba(123, 194, 255, 0.55), transparent 42%),
    radial-gradient(circle at 92% 2%, rgba(168, 238, 255, 0.6), transparent 44%),
    linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(77, 109, 120, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 109, 120, 0.06) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.55;
  z-index: -1;
}

.site-shell {
  width: min(1140px, 92vw);
  margin: 0 auto;
  padding: 1rem 0 2.5rem;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -100px;
  background: #ffffff;
  color: #0d2656;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  text-decoration: none;
  padding: 0.5rem 0.7rem;
  font-size: 0.85rem;
  z-index: 200;
}

.skip-link:focus {
  top: 0.75rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0.85rem;
  z-index: 100;
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 999px;
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 45px rgba(22, 41, 92, 0.14);
  padding: 0.55rem 0.75rem 0.55rem 0.9rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.brand-logo {
  max-height: clamp(42px, 4.8vw, 58px);
  width: auto;
  max-width: min(250px, 38vw);
  height: auto;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 8px 18px rgba(20, 49, 56, 0.18));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 0.52rem 0.85rem;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 500;
  transition: color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.site-nav a:hover {
  background: rgba(0, 103, 255, 0.09);
  color: var(--accent);
}

.site-nav a.active {
  background: rgba(0, 103, 255, 0.14);
  color: var(--accent);
}

.site-nav a.nav-external {
  color: #ffffff;
  background: linear-gradient(145deg, #20424a, #356f63);
  border: 1px solid rgba(255, 255, 255, 0.44);
  box-shadow: 0 8px 20px rgba(20, 49, 56, 0.24);
}

.site-nav a.nav-external:hover {
  color: #ffffff;
  background: linear-gradient(145deg, #28545d, #428371);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  padding: 0.4rem 0.8rem;
}

main {
  display: grid;
  gap: 1.4rem;
  margin-top: 1.2rem;
  min-height: 55vh;
}

.hero {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 1rem;
}

.hero-copy,
.hero-viz,
.panel,
.page-hero {
  border: 1px solid rgba(255, 255, 255, 0.75);
  background: var(--panel);
  border-radius: 1.55rem;
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: clamp(1.35rem, 3.5vw, 2.7rem);
}

.kicker {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  letter-spacing: 0.12em;
  font-size: 0.74rem;
  color: var(--accent);
  font-weight: 700;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.14;
  margin: 0;
}

h1 {
  font-size: clamp(1.95rem, 3.5vw, 3.2rem);
}

h2 {
  font-size: clamp(1.35rem, 2.6vw, 2rem);
}

h3 {
  font-size: 1.18rem;
}

p {
  color: var(--muted);
  line-height: 1.6;
}

.hero-copy p {
  margin: 1rem 0 0;
  max-width: 58ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.35rem;
}

.btn {
  text-decoration: none;
  border-radius: 999px;
  padding: 0.62rem 1.05rem;
  font-weight: 600;
  font-size: 0.94rem;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(145deg, var(--accent), var(--accent-soft));
  color: #fff;
  box-shadow: 0 10px 22px rgba(0, 103, 255, 0.32);
}

.btn-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
}

.hero-viz {
  position: relative;
  min-height: clamp(420px, 54vh, 620px);
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 18%, rgba(92, 225, 197, 0.18), transparent 34%),
    radial-gradient(circle at 86% 14%, rgba(255, 209, 141, 0.22), transparent 32%),
    linear-gradient(160deg, rgba(249, 244, 235, 0.96), rgba(230, 241, 233, 0.92));
}

.hero-stack {
  display: grid;
  gap: 0.85rem;
  align-content: start;
  min-height: 100%;
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
}

.hero-summary {
  border: 1px solid rgba(13, 102, 96, 0.12);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.74);
  padding: 1rem;
  box-shadow: 0 18px 38px rgba(21, 35, 44, 0.08);
}

.hero-summary h2 {
  margin-top: 0.2rem;
}

.hero-summary-list {
  list-style: none;
  margin: 0.8rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.hero-summary-list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.55;
}

.hero-summary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: linear-gradient(145deg, var(--accent), var(--accent-warm));
  box-shadow: 0 0 0 5px rgba(13, 102, 96, 0.08);
}

.hero-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.hero-mini-card {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.82);
  padding: 1rem;
  box-shadow: 0 18px 34px rgba(21, 35, 44, 0.08);
}

.hero-mini-card h3 {
  margin-top: 0.18rem;
}

.hero-mini-card p {
  margin: 0.45rem 0 0;
}

.immersion-panel {
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.immersion-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(175, 228, 215, 0.14);
  border-radius: 1.6rem;
  background:
    radial-gradient(circle at 18% 16%, rgba(92, 225, 197, 0.16), transparent 28%),
    radial-gradient(circle at 84% 22%, rgba(255, 209, 141, 0.14), transparent 24%),
    linear-gradient(180deg, rgba(12, 26, 31, 0.96), rgba(8, 18, 24, 0.96));
  box-shadow: 0 34px 90px rgba(8, 17, 22, 0.28);
}

.immersion-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(152, 220, 206, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(152, 220, 206, 0.06) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.86), transparent 94%);
  pointer-events: none;
}

.immersion-copy,
.immersion-stage {
  position: relative;
  z-index: 1;
}

.immersion-copy {
  padding: clamp(1.2rem, 2.6vw, 1.8rem) clamp(1.2rem, 3vw, 2rem) 0;
}

.immersion-copy h2,
.immersion-copy .lead {
  max-width: 46rem;
}

.immersion-copy h2 {
  color: #f3fcf8;
  margin-top: 0.18rem;
}

.immersion-copy .lead {
  color: rgba(220, 239, 233, 0.76);
  margin-top: 0.75rem;
}

.immersion-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.immersion-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.38rem 0.74rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: rgba(232, 246, 241, 0.84);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(167, 225, 212, 0.14);
}

.immersion-stage {
  min-height: clamp(340px, 44vw, 520px);
  padding: 1rem clamp(1rem, 3vw, 1.5rem) 1.15rem;
}

.immersion-layer {
  position: absolute;
  inset: auto;
  border-radius: 999px;
  filter: blur(26px);
  opacity: 0.9;
  pointer-events: none;
}

.immersion-layer-a {
  width: 280px;
  height: 280px;
  top: 14%;
  left: 8%;
  background: radial-gradient(circle, rgba(93, 225, 198, 0.18), transparent 70%);
  animation: immersion-drift 18s ease-in-out infinite;
}

.immersion-layer-b {
  width: 360px;
  height: 360px;
  top: 6%;
  right: 10%;
  background: radial-gradient(circle, rgba(92, 140, 255, 0.16), transparent 72%);
  animation: immersion-drift 22s ease-in-out infinite reverse;
}

.immersion-layer-c {
  width: 260px;
  height: 260px;
  right: 24%;
  bottom: 12%;
  background: radial-gradient(circle, rgba(255, 209, 141, 0.14), transparent 74%);
  animation: immersion-drift 20s ease-in-out infinite;
  animation-delay: -7s;
}

.immersion-canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 2.4 / 1;
  display: block;
  border-radius: 1.25rem;
  background:
    linear-gradient(180deg, rgba(7, 18, 24, 0.2), rgba(7, 18, 24, 0)),
    radial-gradient(circle at 50% 50%, rgba(79, 191, 168, 0.08), transparent 56%);
  border: 1px solid rgba(175, 228, 215, 0.1);
}

.immersion-badge {
  position: absolute;
  display: grid;
  gap: 0.14rem;
  min-width: 10rem;
  padding: 0.72rem 0.82rem;
  border-radius: 1rem;
  background: rgba(9, 19, 25, 0.6);
  border: 1px solid rgba(174, 227, 214, 0.14);
  box-shadow: 0 18px 42px rgba(5, 14, 18, 0.22);
  backdrop-filter: blur(16px);
}

.immersion-badge strong {
  color: #f6fffb;
  font-family: var(--font-display);
  font-size: 1rem;
}

.immersion-badge span {
  color: rgba(218, 237, 231, 0.72);
  font-size: 0.76rem;
  line-height: 1.4;
}

.immersion-badge-a {
  top: 20%;
  left: 4%;
}

.immersion-badge-b {
  top: 12%;
  right: 5%;
}

.immersion-badge-c {
  bottom: 22%;
  left: 10%;
}

.immersion-badge-d {
  right: 10%;
  bottom: 25%;
}

.immersion-rail {
  position: absolute;
  left: clamp(1rem, 3vw, 1.5rem);
  right: clamp(1rem, 3vw, 1.5rem);
  bottom: 1.15rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
}

.immersion-rail-item {
  border-radius: 0.95rem;
  padding: 0.7rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(175, 228, 215, 0.1);
}

.immersion-rail-item span,
.immersion-rail-item em {
  display: block;
}

.immersion-rail-item span {
  color: rgba(223, 240, 235, 0.8);
  font-size: 0.78rem;
  line-height: 1.35;
}

.immersion-rail-item em {
  margin-top: 0.24rem;
  color: #ffd595;
  font-style: normal;
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.panel {
  padding: clamp(1.2rem, 2.8vw, 2rem);
}

.page-hero {
  padding: clamp(1.4rem, 3vw, 2.5rem);
}

.page-hero .lead {
  max-width: 67ch;
}

.section-heading {
  margin-bottom: 1rem;
}

.section-heading.row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.card {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1rem;
}

.card h3,
.card h2 {
  margin-top: 0.2rem;
}

.card p {
  margin: 0.5rem 0 0;
}

.product-grid {
  align-items: stretch;
}

.product-grid .product-card {
  display: flex;
  flex-direction: column;
  min-height: 22rem;
}

.product-card-content {
  position: relative;
  margin-top: 0.45rem;
  max-height: 11.5rem;
  overflow: hidden;
}

.product-card.can-expand:not(.expanded) .product-card-content::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2.8rem;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), var(--panel-strong) 70%);
}

.product-card.expanded .product-card-content {
  max-height: none;
  overflow: visible;
}

.card-expander {
  margin-top: auto;
  align-self: flex-start;
  border: 1px solid rgba(50, 92, 168, 0.58);
  border-radius: 0.64rem;
  background: linear-gradient(140deg, #11284f 0%, #1b3d77 100%);
  color: #eaf2ff;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.52rem 0.8rem;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(13, 34, 77, 0.25);
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.card-expander:hover {
  background: linear-gradient(140deg, #163468 0%, #24549f 100%);
  border-color: rgba(106, 156, 255, 0.72);
  transform: translateY(-1px);
  box-shadow: 0 11px 24px rgba(13, 34, 77, 0.35);
}

.product-card.expanded .card-expander {
  margin-top: 1rem;
}

.card-expander[hidden] {
  display: none;
}

.meta {
  margin: 0;
  color: #4c5b7f;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.text-link {
  color: var(--accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.8rem;
  font-weight: 600;
  font-size: 0.93rem;
}

.text-link:hover {
  text-decoration: underline;
}

.inline-link {
  color: #1f58b8;
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 600;
}

.inline-link:hover {
  text-decoration-thickness: 2px;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 1.4rem;
  align-items: start;
}

.lead {
  font-size: 1.05rem;
}

.tag-list,
.step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.tag-list li,
.step-list li {
  border: 1px solid var(--line);
  border-radius: 0.82rem;
  background: rgba(255, 255, 255, 0.84);
  padding: 0.72rem 0.85rem;
  color: #29406f;
}

.chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: rgba(0, 103, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(0, 103, 255, 0.2);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.55rem;
  margin-bottom: 0.25rem;
}

.article-list {
  display: grid;
  gap: 0.85rem;
}

.article-card h2 {
  font-size: clamp(1.18rem, 2.3vw, 1.6rem);
}

.article-page {
  max-width: 860px;
  margin: 0 auto;
  padding: clamp(1.3rem, 3vw, 2.2rem);
}

.panel,
.page-hero,
.card,
.article-page {
  content-visibility: auto;
  contain-intrinsic-size: 1px 600px;
}

.article-page p {
  margin: 1rem 0 0;
}

.article-page h2 {
  margin-top: 1.9rem;
  font-size: clamp(1.24rem, 2.4vw, 1.76rem);
}

.article-page h3 {
  margin-top: 1.25rem;
  font-size: 1.08rem;
}

.article-page ul,
.article-page ol {
  margin: 0.9rem 0 0 1.2rem;
  padding: 0;
  color: var(--muted);
}

.article-page li {
  margin: 0.4rem 0;
  line-height: 1.58;
}

.article-related {
  margin-top: 2.1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.article-related h2 {
  margin: 0;
  font-size: 1.12rem;
}

.related-links {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.5rem;
}

.related-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  line-height: 1.4;
}

.related-link:hover {
  text-decoration: underline;
}

.article-pager {
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.pager-link,
.pager-spacer {
  flex: 1 1 260px;
  min-width: 0;
}

.pager-link {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: rgba(255, 255, 255, 0.78);
  color: #1b3565;
  text-decoration: none;
  padding: 0.62rem 0.78rem;
}

.pager-link:hover {
  background: #ffffff;
  border-color: #9cb5ea;
}

.pager-label {
  display: block;
  font-size: 0.74rem;
  color: #4f6289;
  letter-spacing: 0.02em;
}

.pager-title {
  display: block;
  margin-top: 0.16rem;
  color: var(--text);
  font-weight: 600;
  line-height: 1.36;
}

.pager-link.next {
  text-align: right;
}

blockquote {
  margin: 1.15rem 0 0;
  border-left: 4px solid var(--accent-soft);
  background: rgba(255, 255, 255, 0.74);
  border-radius: 0.75rem;
  padding: 0.75rem 0.9rem;
  color: #1a2d59;
}

.footer {
  margin-top: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  color: #5a698d;
  font-size: 0.9rem;
  flex-wrap: wrap;
  padding: 0.35rem 0.2rem;
}

.footer p {
  margin: 0;
}

.footer-legal {
  max-width: 70ch;
}

.footer-meta {
  margin-left: auto;
  text-align: right;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.footer-link {
  color: #244f9e;
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

.footer-link:hover {
  text-decoration: underline;
}


@media (max-width: 980px) {
  .hero,
  .split,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .hero-viz {
    min-height: auto;
  }

  .hero-stack {
    padding: 1rem;
  }

  .immersion-badge-a {
    left: 1.25rem;
  }

  .immersion-badge-b {
    right: 1.25rem;
  }

  .immersion-badge-c,
  .immersion-badge-d {
    display: none;
  }

  .immersion-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .topbar {
    border-radius: 1.1rem;
    padding: 0.65rem;
    align-items: start;
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.35rem;
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    border-radius: 0.8rem;
  }

  .brand-logo {
    max-width: min(220px, 58vw);
    max-height: 52px;
  }

  .hero-mini-grid {
    grid-template-columns: 1fr;
  }

  .product-grid .product-card {
    min-height: 19.5rem;
  }

  .immersion-copy {
    padding: 1rem 1rem 0;
  }

  .immersion-stage {
    min-height: 300px;
    padding: 0.9rem 0.9rem 1rem;
  }

  .immersion-canvas {
    aspect-ratio: 1.55 / 1;
  }

  .immersion-badge {
    min-width: auto;
    max-width: 11rem;
    padding: 0.62rem 0.72rem;
  }

  .immersion-badge-a,
  .immersion-badge-b {
    top: auto;
    bottom: 5.9rem;
  }

  .immersion-badge-a {
    left: 0.9rem;
  }

  .immersion-badge-b {
    right: 0.9rem;
  }

  .section-heading.row .btn {
    width: 100%;
    text-align: center;
  }

  .footer {
    align-items: start;
  }

  .footer-meta {
    margin-left: 0;
    text-align: left;
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem 0.55rem;
    white-space: normal;
  }
}

@media (max-width: 520px) {
  .hero-summary,
  .hero-mini-card {
    padding: 0.9rem;
  }

  .immersion-copy {
    padding: 0.9rem 0.9rem 0;
  }

  .immersion-stage {
    min-height: 260px;
    padding: 0.8rem 0.8rem 0.9rem;
  }

  .immersion-badge {
    display: none;
  }

  .immersion-rail {
    left: 0.8rem;
    right: 0.8rem;
    bottom: 0.9rem;
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
  }

  .btn,
  .site-nav a {
    transition: none;
  }

  .immersion-layer {
    animation: none;
  }
}

@keyframes immersion-drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }

  50% {
    transform: translate3d(14px, -16px, 0) scale(1.05);
  }
}