:root {
  --navy: #0a2540;
  --blue: #1057b7;
  --blue-2: #0c7bdc;
  --teal: #24b6b0;
  --green: #22a36a;
  --ink: #172233;
  --muted: #607086;
  --soft: #eef4f8;
  --panel: #ffffff;
  --line: #d9e3eb;
  --shade: #f7fafc;
  --dark: #071827;
  --shadow: 0 18px 50px rgba(10, 37, 64, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: #ffffff;
  font-family: Inter, "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

p,
h1,
h2,
h3,
h4 {
  margin: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 22px;
  min-height: 74px;
  padding: 0 clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(217, 227, 235, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: max-content;
}

.brand-logo {
  display: block;
  width: 82px;
  max-height: none;
  height: auto;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  color: var(--navy);
  font-size: 16px;
  line-height: 1.1;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

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

.site-nav > a,
.nav-group > a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 10px;
  border-radius: 8px;
  color: #25364a;
  font-size: 14px;
  font-weight: 650;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--blue);
  background: #eef5ff;
}

.nav-group {
  position: relative;
}

.nav-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 270px;
  display: none;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.nav-group:hover .nav-panel,
.nav-group:focus-within .nav-panel {
  display: grid;
}

.nav-panel a {
  padding: 12px;
  border-radius: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 650;
}

.header-cta,
.floating-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  padding: 0 18px;
  border: 1px solid transparent;
  background: var(--blue);
  color: #ffffff;
  font-weight: 750;
  font-size: 14px;
}

.header-cta:hover,
.floating-cta:hover,
.button:hover {
  background: #0d4b9f;
}

.button.secondary {
  color: var(--navy);
  background: #ffffff;
  border-color: var(--line);
}

.button.secondary:hover {
  color: var(--blue);
  background: #f5f9fc;
}

.floating-cta {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 45;
  box-shadow: 0 14px 32px rgba(16, 87, 183, 0.28);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--navy);
}

.section {
  padding: clamp(64px, 8vw, 104px) clamp(18px, 4vw, 56px);
}

.section.alt {
  background: var(--shade);
}

.section.dark {
  color: #ffffff;
  background: var(--dark);
}

.container {
  width: min(1180px, 100%);
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: calc(100vh - 78px);
  display: grid;
  align-items: center;
  padding: clamp(70px, 8vw, 110px) clamp(18px, 4vw, 56px) 44px;
  color: #ffffff;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(7, 24, 39, 0.94), rgba(7, 24, 39, 0.72), rgba(7, 24, 39, 0.3)),
    url("https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&w=1800&q=80") center/cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(180deg, transparent, rgba(7, 24, 39, 0.78));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

h1 {
  max-width: 820px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-text {
  max-width: 730px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.55;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-metrics {
  position: relative;
  z-index: 1;
  width: min(1180px, 100%);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 54px auto 0;
}

.signal-card {
  min-height: 118px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(18px);
}

.signal-card .icon-box {
  margin-bottom: 14px;
  color: #ffffff;
  background: rgba(36, 182, 176, 0.24);
}

.signal-card strong {
  display: block;
  font-size: 16px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.65fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: end;
  margin-bottom: 34px;
}

.section-title {
  color: var(--navy);
  font-size: clamp(30px, 4.2vw, 54px);
  line-height: 1.04;
}

.dark .section-title,
.dark .lead,
.dark .section-head p {
  color: #ffffff;
}

.lead,
.section-head p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(10, 37, 64, 0.06);
}

.card.padded {
  padding: 24px;
}

.card h3 {
  color: var(--navy);
  font-size: 20px;
  line-height: 1.22;
}

.card p {
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.55;
}

.icon-box {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  color: var(--blue);
  background: #eaf3ff;
  font-weight: 900;
}

.card .icon-box {
  margin-bottom: 18px;
}

.solution {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  padding: 34px;
}

.solution + .solution {
  margin-top: 20px;
}

.solution-media {
  min-height: 330px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--soft);
}

.solution-media img {
  width: 100%;
  height: 100%;
  min-height: 330px;
  object-fit: cover;
  display: block;
}

.solution ul,
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}

.solution li,
.feature-list li,
.article-list li {
  position: relative;
  padding-left: 22px;
  color: #31445a;
  line-height: 1.45;
}

.solution li::before,
.feature-list li::before,
.article-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--teal);
}

.network-diagram {
  display: grid;
  gap: 16px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.diagram-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.node {
  min-height: 86px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  font-weight: 750;
}

.node.core {
  background: rgba(36, 182, 176, 0.18);
  border-color: rgba(36, 182, 176, 0.55);
}

.page-hero {
  padding: clamp(70px, 8vw, 110px) clamp(18px, 4vw, 56px);
  color: #ffffff;
  background:
    linear-gradient(90deg, rgba(7, 24, 39, 0.94), rgba(7, 24, 39, 0.74)),
    url("https://images.unsplash.com/photo-1504384308090-c894fdcc538d?auto=format&fit=crop&w=1800&q=80") center/cover;
}

.page-hero .container {
  display: grid;
  gap: 18px;
}

.page-hero h1 {
  max-width: 920px;
}

.page-hero p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 19px;
  line-height: 1.6;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #31445a;
  background: #ffffff;
  font-size: 13px;
  font-weight: 700;
}

.dark .pill {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
}

.article-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.filter-button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  color: #31445a;
  background: #ffffff;
  cursor: pointer;
}

.filter-button.active {
  color: #ffffff;
  background: var(--navy);
  border-color: var(--navy);
}

.article-card {
  display: grid;
  align-content: start;
  min-height: 245px;
}

.article-card small {
  color: var(--blue);
  font-weight: 800;
  text-transform: uppercase;
}

.article-card a {
  margin-top: 18px;
  color: var(--blue);
  font-weight: 800;
}

.article-page {
  max-width: 860px;
}

.article-page h2 {
  margin-top: 34px;
  color: var(--navy);
  font-size: 28px;
}

.article-page p,
.article-page li {
  color: #31445a;
  font-size: 17px;
  line-height: 1.72;
}

.article-page p {
  margin-top: 16px;
}

.article-page blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  color: var(--navy);
  background: #eef5ff;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.35;
}

.article-diagram {
  width: 100%;
  margin: 24px 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.article-diagram svg {
  display: block;
  min-width: 760px;
}

.article-diagram.narrow svg {
  min-width: 620px;
}

.article-diagram.compact svg {
  min-width: 620px;
}

.article-diagram.wide svg {
  min-width: 780px;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.comparison-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: #ffffff;
}

.comparison-card h3 {
  margin: 0 0 12px;
  color: var(--navy);
}

.highlight-box {
  margin: 24px 0;
  padding: 20px 24px;
  border: 1px solid #bcd8ff;
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  background: #eef5ff;
}

.highlight-box p {
  margin: 0;
  color: var(--navy);
  font-weight: 800;
}

.diagram-box {
  margin: 24px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: #f8fafc;
}

.diagram-box h3 {
  margin: 0 0 16px;
  color: var(--navy);
}

.diagram-box pre {
  margin: 0;
  overflow-x: auto;
  color: #31445a;
  font-family: Consolas, "Courier New", monospace;
  font-size: 14px;
  line-height: 1.35;
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.use-cases-grid div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: #ffffff;
}

.use-cases-grid h3 {
  margin: 0;
  color: var(--navy);
  font-size: 18px;
}

.use-cases-grid p {
  margin-top: 8px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0;
}

.info-grid div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: #ffffff;
}

.info-grid h3 {
  margin: 0;
  color: var(--navy);
  font-size: 18px;
}

.info-grid p {
  margin-top: 8px;
}

.article-table-wrap {
  margin-top: 20px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.article-table {
  min-width: 620px;
}

.article-table th,
.article-table td {
  color: #31445a;
  font-size: 15px;
}

.article-table td:nth-child(2),
.article-table td:nth-child(3) {
  text-align: center;
  color: var(--blue);
  font-weight: 900;
}

.technical-table {
  min-width: 760px;
  table-layout: fixed;
}

.technical-table th,
.technical-table td,
.technical-table td:nth-child(2),
.technical-table td:nth-child(3) {
  text-align: left;
  color: #31445a;
  font-weight: 600;
  vertical-align: top;
}

.technical-table th {
  color: var(--navy);
  font-weight: 850;
}

.technical-table th:nth-child(1),
.technical-table td:nth-child(1) {
  width: 150px;
  white-space: nowrap;
  color: var(--navy);
  font-weight: 850;
}

.technical-table th:nth-child(2),
.technical-table td:nth-child(2) {
  width: 250px;
}

.technical-table th:nth-child(3),
.technical-table td:nth-child(3) {
  width: auto;
}

.article-cta {
  margin-top: 38px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7fafc;
}

.article-cta h2 {
  margin-top: 0;
}

.article-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.case-card {
  overflow: hidden;
}

.case-card img {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.case-card div {
  padding: 22px;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  gap: 28px;
  padding: 34px;
}

.contact-form {
  display: grid;
  gap: 12px;
}

.contact-details {
  display: grid;
  gap: 10px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.contact-details p {
  color: #31445a;
  line-height: 1.45;
}

.contact-details strong {
  display: block;
  margin-bottom: 3px;
  color: var(--navy);
}

.contact-details a {
  color: var(--blue);
  font-weight: 800;
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: var(--navy);
  font-weight: 750;
  font-size: 13px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  color: var(--ink);
  background: #ffffff;
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  padding: 34px clamp(18px, 4vw, 56px);
  color: rgba(255, 255, 255, 0.72);
  background: #05111d;
}

.footer strong {
  display: block;
  margin-bottom: 8px;
  color: #ffffff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.footer-links a {
  color: #ffffff;
  font-weight: 700;
}

@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .menu-toggle {
    display: block;
    justify-self: end;
  }

  .site-nav {
    position: fixed;
    inset: 78px 0 auto;
    display: none;
    align-items: stretch;
    justify-content: start;
    padding: 18px;
    border-bottom: 1px solid var(--line);
    background: #ffffff;
    box-shadow: var(--shadow);
  }

  body.menu-open .site-nav {
    display: grid;
  }

  .site-nav > a,
  .nav-group > a {
    width: 100%;
  }

  .nav-panel {
    position: static;
    display: grid;
    width: 100%;
    margin: 4px 0 8px;
    box-shadow: none;
  }

  .header-cta {
    display: none;
  }

  .hero-metrics,
  .grid.four,
  .grid.three,
  .solution,
  .contact-panel,
  .section-head {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .hero {
    min-height: auto;
    padding-top: 62px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-metrics,
  .grid.four,
  .grid.three,
  .grid.two,
  .solution,
  .contact-panel,
  .section-head,
  .diagram-row,
  .footer {
    grid-template-columns: 1fr;
  }

  .solution {
    padding: 20px;
  }

  .solution ul,
  .feature-list {
    grid-template-columns: 1fr;
  }

  .use-cases-grid {
    grid-template-columns: 1fr;
  }

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

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

  .floating-cta {
    left: 14px;
    right: 14px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}