:root {
  --bg: #08111b;
  --bg-soft: #0d1722;
  --surface: #101b27;
  --border: rgba(170, 205, 235, 0.13);
  --text: #eef6fd;
  --muted: #a9b8c7;
  --subtle: #74889a;
  --accent: #37c8f3;
  --accent-strong: #58a6ff;
  --accent-soft: rgba(55, 200, 243, 0.1);
  --shadow: 0 18px 46px rgba(0, 0, 0, 0.22);
  --radius: 8px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #08111b 0%, #0a1420 52%, #07101a 100%);
  color: var(--text);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 50% 0%, rgba(55, 200, 243, 0.08), transparent 34rem);
  pointer-events: none;
}

a {
  color: inherit;
}

.container {
  width: min(100% - 32px, 1160px);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(8, 17, 27, 0.9);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  color: var(--text);
  font-size: 1rem;
  font-weight: 760;
  letter-spacing: 0;
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  position: fixed;
  top: 72px;
  left: 16px;
  right: 16px;
  display: none;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(10, 24, 38, 0.98);
  box-shadow: var(--shadow);
}

.nav.is-open {
  display: grid;
  gap: 4px;
}

.nav a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  outline: none;
}

.nav-toggle {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.section {
  padding: 76px 0;
}

.section-band {
  border-block: 1px solid rgba(255, 255, 255, 0.055);
  background: rgba(255, 255, 255, 0.018);
}

.hero {
  min-height: auto;
  display: grid;
  align-items: center;
  padding: 92px 0 78px;
}

.hero-grid,
.split-section {
  display: grid;
  gap: 34px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 850px;
  margin-bottom: 18px;
  font-size: clamp(2.2rem, 7vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(1.65rem, 4vw, 2.55rem);
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.04rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.lead,
.section-heading p,
.card p,
.method-step p,
.cta-panel p,
.footer-inner p {
  color: var(--muted);
}

.lead {
  max-width: 760px;
  margin-bottom: 26px;
  font-size: clamp(1rem, 2.5vw, 1.18rem);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 10px 16px;
  font-weight: 760;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #04111d;
  box-shadow: 0 12px 36px rgba(33, 212, 253, 0.2);
}

.btn-secondary,
.btn-small {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.035);
  color: var(--text);
}

.btn-whatsapp {
  border-color: rgba(55, 200, 243, 0.26);
  background: rgba(55, 200, 243, 0.08);
  color: var(--text);
}

.btn-small {
  min-height: 38px;
  padding: 8px 12px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge-row span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 11px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--muted);
  font-size: 0.86rem;
}

.network-panel {
  position: relative;
  overflow: hidden;
  min-height: 440px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 50% 38%, rgba(55, 200, 243, 0.11), transparent 15rem),
    rgba(16, 27, 39, 0.58);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.18);
}

.topology {
  position: relative;
  min-height: 300px;
  margin: 24px 18px 0;
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    rgba(5, 13, 22, 0.18);
  background-size: 42px 42px;
  border: 1px solid rgba(255, 255, 255, 0.055);
}

.topology::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(55, 200, 243, 0.08);
  border-radius: var(--radius);
}

.topology-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.topology-lines path {
  fill: none;
  stroke: rgba(55, 200, 243, 0.38);
  stroke-width: 2;
  stroke-linecap: round;
}

.node {
  position: absolute;
  z-index: 2;
  display: grid;
  width: 104px;
  min-height: 68px;
  place-items: center;
  gap: 2px;
  border: 1px solid rgba(55, 200, 243, 0.42);
  border-radius: var(--radius);
  padding: 12px 10px;
  background: rgba(8, 20, 32, 0.96);
  color: var(--text);
  box-shadow: none;
  text-align: center;
}

.node small {
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 800;
}

.node strong {
  color: var(--subtle);
  font-size: 0.72rem;
  font-weight: 650;
}

.node-core {
  left: calc(50% - 52px);
  top: 116px;
  border-color: rgba(55, 200, 243, 0.78);
  background: rgba(8, 26, 42, 0.98);
}

.node-edge {
  left: 7%;
  top: 44px;
}

.node-fw {
  right: 7%;
  top: 44px;
}

.node-nms {
  left: 10%;
  bottom: 38px;
}

.node-auto {
  right: 10%;
  bottom: 38px;
}

.telemetry {
  display: grid;
  gap: 8px;
  padding: 14px 18px 18px;
}

.telemetry div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 132px;
  align-items: center;
  gap: 14px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius);
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.025);
  font-size: 0.9rem;
}

.telemetry span {
  color: var(--muted);
}

.telemetry i {
  position: relative;
  display: block;
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
}

.telemetry i::before {
  content: "";
  position: absolute;
  inset: 0 28% 0 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
}

.cards {
  display: grid;
  gap: 14px;
}

.card,
.method-step {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(16, 27, 39, 0.68);
  box-shadow: none;
}

.card {
  padding: 18px;
}

.card.compact {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 68px;
  color: var(--text);
  font-weight: 680;
}

.card-mark {
  width: 7px;
  height: 28px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: linear-gradient(var(--accent), var(--accent-strong));
}

.card-number {
  margin-bottom: 20px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
}

.service-wide {
  background:
    linear-gradient(135deg, rgba(55, 200, 243, 0.08), transparent 42%),
    rgba(16, 27, 39, 0.72);
}

.method-grid {
  display: grid;
  gap: 14px;
}

.method-step {
  padding: 20px;
}

.method-step span {
  display: inline-grid;
  width: 36px;
  height: 36px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
}

.badge-block {
  margin-top: 18px;
  margin-bottom: 18px;
}

.certifications {
  display: grid;
  gap: 12px;
}

.cert-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  background: rgba(16, 27, 39, 0.68);
}

.cert-card span {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.cert-card h3 {
  margin-bottom: 8px;
}

.cert-card p {
  margin: 0;
  color: var(--muted);
}

.cert-primary {
  position: relative;
  overflow: hidden;
  border-color: rgba(55, 200, 243, 0.36);
  background:
    linear-gradient(135deg, rgba(55, 200, 243, 0.12), transparent 48%),
    rgba(16, 27, 39, 0.82);
}

.cert-primary h3 {
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.cert-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--accent);
  font-weight: 760;
  text-decoration-color: rgba(55, 200, 243, 0.45);
  text-underline-offset: 4px;
}

.notice {
  margin: 0;
  border-left: 3px solid var(--accent);
  padding: 12px 14px;
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(255, 255, 255, 0.035);
  color: var(--muted);
  font-size: 0.92rem;
}

.check-list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 13px 14px 13px 40px;
  background: rgba(16, 29, 43, 0.82);
  color: var(--muted);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 19px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(33, 212, 253, 0.8);
}

.cta-section {
  padding-top: 84px;
}

.cta-panel {
  max-width: 920px;
  margin-inline: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(24px, 6vw, 52px);
  background: rgba(16, 27, 39, 0.74);
  text-align: center;
  box-shadow: none;
}

.center-actions {
  justify-content: center;
}

.contact-note {
  max-width: 670px;
  margin: 28px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.contact-note h3 {
  margin-bottom: 6px;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 30px 0;
  color: var(--muted);
}

.footer-inner {
  display: grid;
  gap: 20px;
}

.footer-inner strong {
  color: var(--text);
}

.footer-inner p {
  margin: 4px 0;
}

.footer-inner a,
.footer-links a {
  color: var(--muted);
  text-decoration-color: rgba(33, 212, 253, 0.45);
  text-underline-offset: 4px;
}

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

@media (min-width: 720px) {
  .container {
    width: min(100% - 48px, 1160px);
  }

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

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 940px) {
  .nav-toggle {
    display: none;
  }

  .nav {
    position: static;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .nav a {
    padding: 8px 10px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
    align-items: center;
  }

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

  .service-wide {
    grid-column: span 3;
  }

  .expertise-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .split-section {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

@media (max-width: 420px) {
  .hero-actions .btn {
    width: 100%;
  }

  .network-panel {
    min-height: 390px;
  }

  .topology {
    min-height: 260px;
    margin-inline: 12px;
  }

  .node {
    width: 78px;
    min-height: 58px;
    padding: 9px 7px;
  }

  .node strong {
    display: none;
  }

  .node-core {
    left: calc(50% - 39px);
    top: 104px;
  }

  .telemetry div {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}