:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #061a34;
  background: #f6f9ff;
  --navy-950: #001633;
  --navy-900: #001f45;
  --navy-800: #08345f;
  --blue-600: #0564f5;
  --blue-500: #1677ff;
  --blue-100: #dbeafe;
  --slate-600: #405269;
  --line: #d9e5f6;
  --surface: rgba(255, 255, 255, .82);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 84% 8%, rgba(5, 100, 245, .12), transparent 34rem),
    linear-gradient(180deg, #ffffff 0%, #f6f9ff 42%, #edf4ff 100%);
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 16px 0;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(16px);
}

.brand,
nav {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand {
  font-weight: 900;
}

.brand-logo {
  display: block;
  width: min(260px, 58vw);
  height: 56px;
  object-fit: contain;
  object-position: left center;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 32px;
  place-items: center;
  border: 1px solid var(--blue-100);
  border-radius: 8px;
  background: var(--navy-950);
  color: #ffffff;
  font-size: 13px;
  letter-spacing: 0;
}

nav a {
  color: var(--slate-600);
  font-size: 14px;
  font-weight: 800;
}

nav a:hover {
  color: var(--blue-600);
}

main {
  display: flex;
  flex-direction: column;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding-bottom: 56px;
}

.hero {
  order: 1;
}

.status-strip {
  order: 2;
}

#use {
  order: 3;
}

#ssg-sip {
  order: 4;
}

#scheme {
  order: 5;
}

#benefits {
  order: 6;
}

#hardware {
  order: 7;
}

#routing {
  order: 8;
}

#monitoring {
  order: 9;
}

#services {
  order: 10;
}

#security {
  order: 11;
}

#ha {
  order: 12;
}

#faq {
  order: 13;
}

#seo-pages {
  order: 14;
}

#docs {
  order: 15;
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 34px;
  min-height: auto;
  padding: 34px 0 52px;
}

.hero-copy,
.product-hero {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue-600);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 900px;
  margin-bottom: 22px;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1;
  letter-spacing: 0;
  overflow-wrap: break-word;
  hyphens: auto;
}

.hero-logo {
  display: block;
  width: min(520px, 100%);
  height: auto;
  margin: 0 0 28px;
  border-radius: 8px;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.06;
  letter-spacing: 0;
}

.lead,
.content-section p,
.scheme-section p,
.hardware-section p {
  color: var(--slate-600);
  font-size: 18px;
  line-height: 1.62;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 900;
}

.button.primary {
  background: linear-gradient(135deg, var(--navy-950), var(--navy-800));
  color: #ffffff;
  box-shadow: 0 16px 32px rgba(0, 31, 69, .18);
}

.button.secondary {
  border: 1px solid #b8c9e3;
  background: #ffffff;
  color: var(--navy-900);
}

.product-hero {
  overflow: hidden;
  margin: 0;
  max-width: 920px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 28px 70px rgba(0, 31, 69, .12);
}

.product-hero img,
.scheme-section img,
.hardware-section img {
  display: block;
  width: 100%;
  height: auto;
}

.status-strip,
.benefit-list,
.feature-grid,
.use-grid,
.info-list {
  display: grid;
  gap: 14px;
}

.status-strip {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: -6px 0 64px;
}

.status-strip article,
.benefit-list li,
.use-grid article,
.feature-grid article,
.info-list article,
.doc-card,
.diagnostic-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 16px 34px rgba(0, 31, 69, .055);
}

.status-strip article {
  min-height: 112px;
  padding: 18px;
}

.status-strip strong {
  display: block;
  margin-bottom: 8px;
  color: var(--navy-950);
  font-size: 24px;
}

.status-strip span {
  color: var(--slate-600);
  line-height: 1.45;
}

.benefit-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.benefit-list li {
  position: relative;
  min-height: 92px;
  padding: 22px 22px 22px 56px;
  color: var(--navy-800);
  font-size: 17px;
  font-weight: 750;
  line-height: 1.45;
}

.benefit-list li::before {
  position: absolute;
  left: 22px;
  top: 25px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--blue-600);
  box-shadow: inset 0 0 0 5px var(--blue-100);
  content: "";
}

.scheme-section,
.hardware-section,
.content-section {
  margin: 0 0 64px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, .78);
}

.scheme-section {
  display: grid;
  gap: 18px;
}

.scheme-section .section-heading {
  max-width: 980px;
}

.scheme-section h2 {
  max-width: 930px;
  margin-bottom: 12px;
  font-size: clamp(30px, 3.8vw, 56px);
}

.scheme-section p {
  max-width: 980px;
}

.scheme-section img {
  border: 1px solid var(--blue-100);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 18px 42px rgba(5, 100, 245, .09);
}

.hardware-section {
  display: grid;
  gap: 26px;
}

.hardware-section img {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.section-heading {
  max-width: 780px;
}

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

.landing-links {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
}

.landing-links a {
  color: var(--navy-950);
}

.use-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 24px;
}

.use-grid article {
  padding: 22px;
}

.feature-grid article,
.info-list article {
  padding: 20px;
}

.feature-grid span {
  color: var(--blue-600);
  font-weight: 900;
}

.use-grid h3,
.feature-grid h3,
.info-list strong {
  display: block;
  margin: 12px 0 10px;
  font-size: 20px;
}

.use-grid p,
.feature-grid p {
  margin-bottom: 0;
  font-size: 15px;
}

.doc-card span,
.info-list span {
  color: var(--slate-600);
  line-height: 1.45;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 12px 24px rgba(0, 31, 69, .045);
}

.faq-list summary {
  cursor: pointer;
  padding: 18px 20px;
  color: var(--navy-950);
  font-weight: 900;
}

.faq-list p {
  margin: 0;
  padding: 0 20px 20px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, 1fr);
  gap: 28px;
  align-items: start;
}

.diagnostic-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr);
  gap: 20px;
  padding: 24px;
}

.diagnostic-panel.compact {
  grid-template-columns: 1fr;
}

pre {
  overflow: auto;
  margin: 0;
  padding: 18px;
  border-radius: 8px;
  background: var(--navy-950);
  color: #e0f2fe;
  line-height: 1.55;
}

.doc-card {
  display: grid;
  gap: 12px;
  padding: 24px;
}

.doc-card strong {
  font-size: 24px;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
  width: min(1180px, calc(100% - 32px));
  margin: 20px auto 0;
  padding: 26px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--slate-600);
}

@media (min-width: 1280px) {
  .hero {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    min-height: calc(100vh - 72px);
  }

  .product-hero {
    max-width: none;
  }
}

@media (max-width: 1100px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .split,
  .diagnostic-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  h1 {
    font-size: clamp(38px, 9vw, 58px);
  }

  .status-strip,
  .benefit-list,
  .use-grid,
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .brand-logo {
    height: 44px;
  }

  nav {
    width: 100%;
    flex-wrap: wrap;
  }

  .status-strip,
  .benefit-list,
  .use-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .scheme-section,
  .hardware-section,
  .content-section {
    padding: 22px;
  }
}