:root {
  --infra-primary: #2563eb;
  --infra-primary-dark: #1d4ed8;
  --infra-primary-light: #60a5fa;
  --infra-accent: #06b6d4;
  --infra-accent-purple: #8b5cf6;
  --infra-success: #10b981;
  --infra-warning: #f59e0b;
  --infra-bg-light: #ffffff;
  --infra-bg-alt-light: #f8fafc;
  --infra-card-bg-light: #ffffff;
  --infra-border-light: #e2e8f0;
  --infra-text-main-light: #0f172a;
  --infra-text-muted-light: #475569;
  --infra-shadow-light: 0 10px 30px -10px rgba(15, 23, 42, 0.06), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
}

.hstdr-dark {
  --infra-bg-light: #0b1120;
  --infra-bg-alt-light: #0f172a;
  --infra-card-bg-light: #162033;
  --infra-border-light: #1e293b;
  --infra-text-main-light: #f8fafc;
  --infra-text-muted-light: #94a3b8;
  --infra-shadow-light: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
}

html {
  scroll-behavior: smooth;
}

[data-infra-story] section[id],
.infra-section[id],
.infra-faq-item summary {
  scroll-margin-top: 110px;
}


.infra-section {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
  background-color: var(--infra-bg-light);
  color: var(--infra-text-main-light);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.infra-section-alt {
  background-color: var(--infra-bg-alt-light);
}

.infra-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(37, 99, 235, 0.08);
  color: var(--infra-primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
  margin-bottom: 16px;
}

.hstdr-dark .infra-eyebrow {
  background: rgba(96, 165, 250, 0.1);
  color: var(--infra-primary-light);
  border-color: rgba(96, 165, 250, 0.25);
}

.infra-title {
  font-size: clamp(2rem, 4vw, 2.85rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--infra-text-main-light);
  margin: 0 0 16px;
}

.infra-desc {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.75;
  color: var(--infra-text-muted-light);
  max-width: 680px;
  margin: 0 auto;
}


.infra-hero-wrap {
  padding-top: 50px;
  padding-bottom: 70px;
  position: relative;
}

.infra-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 700;
  color: #1e293b;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
  margin-bottom: 24px;
}

.hstdr-dark .infra-hero-badge {
  background: rgba(22, 32, 51, 0.8);
  border-color: rgba(51, 65, 85, 0.8);
  color: #f1f5f9;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.infra-ping-dot {
  position: relative;
  display: inline-flex;
  width: 9px;
  height: 9px;
}

.infra-ping-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--infra-success);
  opacity: 0.6;
  animation: infraPing 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.infra-ping-dot span {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--infra-success);
}

@keyframes infraPing {
  0% { transform: scale(0.9); opacity: 0.8; }
  70%, 100% { transform: scale(2.4); opacity: 0; }
}


.infra-metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 48px;
}

@media (min-width: 768px) {
  .infra-metric-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}

.infra-metric-card {
  padding: 24px 20px;
  background: var(--infra-card-bg-light);
  border: 1px solid var(--infra-border-light);
  border-radius: 20px;
  text-align: center;
  box-shadow: var(--infra-shadow-light);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.infra-metric-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--infra-primary), var(--infra-accent));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.infra-metric-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: 0 16px 32px -8px rgba(37, 99, 235, 0.12);
}

.infra-metric-card:hover::before {
  opacity: 1;
}

.infra-metric-num {
  font-size: clamp(1.85rem, 3vw, 2.5rem);
  font-weight: 900;
  line-height: 1.1;
  background: linear-gradient(135deg, #1e293b 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}

.hstdr-dark .infra-metric-num {
  background: linear-gradient(135deg, #ffffff 0%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.infra-metric-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--infra-text-muted-light);
}

.infra-metric-sub {
  font-size: 11px;
  font-weight: 600;
  color: #94a3b8;
  margin-top: 4px;
}


.infra-topology-container {
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.7) 0%, rgba(241, 245, 249, 0.9) 100%);
  border: 1px solid var(--infra-border-light);
  border-radius: 28px;
  padding: 36px 24px;
  margin-top: 40px;
  box-shadow: var(--infra-shadow-light);
  position: relative;
}

.hstdr-dark .infra-topology-container {
  background: linear-gradient(180deg, #111a2e 0%, #0d1424 100%);
  border-color: #1e293b;
}

.infra-topology-layers {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}

.infra-topo-layer {
  background: var(--infra-card-bg-light);
  border: 1px solid var(--infra-border-light);
  border-radius: 20px;
  padding: 24px 28px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.infra-topo-layer:hover,
.infra-topo-layer.active {
  border-color: var(--infra-primary);
  box-shadow: 0 12px 28px -6px rgba(37, 99, 235, 0.18);
  transform: translateY(-2px);
}

.infra-topo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.infra-topo-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(37, 99, 235, 0.1);
  color: var(--infra-primary);
}

.hstdr-dark .infra-topo-tag {
  background: rgba(96, 165, 250, 0.15);
  color: var(--infra-primary-light);
}

.infra-topo-nodes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 640px) {
  .infra-topo-nodes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .infra-topo-nodes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.infra-topo-node-card {
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(248, 250, 252, 0.8);
  border: 1px solid #e2e8f0;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: all 0.2s ease;
}

.hstdr-dark .infra-topo-node-card {
  background: rgba(15, 23, 42, 0.6);
  border-color: #334155;
}

.infra-topo-node-card:hover {
  background: #ffffff;
  border-color: var(--infra-primary-light);
  transform: translateY(-2px);
}

.hstdr-dark .infra-topo-node-card:hover {
  background: #1e293b;
  border-color: var(--infra-primary);
}

.infra-topo-node-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.1));
  color: var(--infra-primary);
  flex-shrink: 0;
}

.hstdr-dark .infra-topo-node-icon {
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.2), rgba(6, 182, 212, 0.2));
  color: var(--infra-primary-light);
}

.infra-topo-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: -6px 0;
  position: relative;
  z-index: 2;
}

.infra-topo-connector-pill {
  padding: 5px 16px;
  background: var(--infra-card-bg-light);
  border: 1px solid var(--infra-border-light);
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 700;
  color: #64748b;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.04);
}

.hstdr-dark .infra-topo-connector-pill {
  color: #94a3b8;
  border-color: #334155;
}


.infra-pillars-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 48px;
}

@media (min-width: 640px) {
  .infra-pillars-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .infra-pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.infra-pillar-card {
  padding: 32px 28px;
  background: var(--infra-card-bg-light);
  border: 1px solid var(--infra-border-light);
  border-radius: 24px;
  box-shadow: var(--infra-shadow-light);
  display: flex;
  flex-direction: column;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.infra-pillar-card:hover {
  transform: translateY(-6px);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.12);
}

.infra-pillar-badge {
  font-size: 11px;
  font-weight: 800;
  color: var(--infra-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hstdr-dark .infra-pillar-badge {
  color: var(--infra-primary-light);
}

.infra-pillar-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  color: var(--infra-primary);
  margin-bottom: 20px;
  transition: transform 0.3s ease;
}

.hstdr-dark .infra-pillar-icon {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: var(--infra-primary-light);
  border: 1px solid #334155;
}

.infra-pillar-card:hover .infra-pillar-icon {
  transform: scale(1.08) rotate(3deg);
  background: linear-gradient(135deg, var(--infra-primary) 0%, var(--infra-primary-dark) 100%);
  color: #ffffff;
}

.infra-pillar-title {
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 12px;
  color: var(--infra-text-main-light);
}

.infra-pillar-desc {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--infra-text-muted-light);
  margin: 0 0 20px;
  flex-grow: 1;
}

.infra-pillar-spec-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--infra-border-light);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.infra-pillar-spec-item {
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--infra-text-muted-light);
}

.infra-pillar-spec-item strong {
  color: var(--infra-text-main-light);
  font-weight: 700;
}


.infra-latency-box {
  background: var(--infra-card-bg-light);
  border: 1px solid var(--infra-border-light);
  border-radius: 28px;
  padding: 36px 30px;
  box-shadow: var(--infra-shadow-light);
  margin-top: 40px;
}

.infra-latency-cities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 24px;
}

@media (min-width: 640px) {
  .infra-latency-cities-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .infra-latency-cities-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.infra-latency-city-card {
  padding: 16px 14px;
  border-radius: 16px;
  background: var(--infra-bg-alt-light);
  border: 1px solid var(--infra-border-light);
  text-align: center;
  cursor: pointer;
  transition: all 0.25s ease;
  user-select: none;
}

.infra-latency-city-card:hover,
.infra-latency-city-card.active {
  background: #ffffff;
  border-color: var(--infra-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px -4px rgba(37, 99, 235, 0.15);
}

.hstdr-dark .infra-latency-city-card:hover,
.hstdr-dark .infra-latency-city-card.active {
  background: #1e293b;
  border-color: var(--infra-primary-light);
}

.infra-latency-city-name {
  font-size: 13px;
  font-weight: 800;
  color: var(--infra-text-main-light);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.infra-latency-value {
  font-size: 20px;
  font-weight: 900;
  color: var(--infra-primary);
  letter-spacing: -0.02em;
}

.hstdr-dark .infra-latency-value {
  color: var(--infra-primary-light);
}

.infra-latency-status {
  font-size: 11px;
  font-weight: 700;
  color: var(--infra-success);
  margin-top: 4px;
}


.infra-lg-console {
  background: #090d16;
  border-radius: 18px;
  padding: 20px 24px;
  border: 1px solid #1e293b;
  margin-top: 24px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  color: #38bdf8;
  line-height: 1.6;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.6);
  overflow-x: auto;
}

.infra-lg-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid #1e293b;
  margin-bottom: 14px;
  color: #64748b;
  font-size: 11.5px;
}

.infra-lg-dots {
  display: flex;
  gap: 6px;
}

.infra-lg-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}


.infra-matrix-wrap {
  overflow-x: auto;
  border: 1px solid var(--infra-border-light);
  border-radius: 24px;
  margin-top: 40px;
  background: var(--infra-card-bg-light);
  box-shadow: var(--infra-shadow-light);
}

.infra-matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 760px !important;
}

.infra-matrix-table th,
.infra-matrix-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--infra-border-light);
  vertical-align: middle;
}

.infra-matrix-table th {
  background: var(--infra-bg-alt-light);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--infra-text-muted-light);
}

.infra-matrix-table tr:last-child td {
  border-bottom: none;
}

.infra-matrix-category {
  background: rgba(37, 99, 235, 0.04);
  font-size: 12.5px;
  font-weight: 800;
  color: var(--infra-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hstdr-dark .infra-matrix-category {
  background: rgba(96, 165, 250, 0.06);
  color: var(--infra-primary-light);
}

.infra-matrix-item-title {
  font-weight: 800;
  color: var(--infra-text-main-light);
  font-size: 14.5px;
}

.infra-matrix-item-desc {
  font-size: 12.5px;
  color: var(--infra-text-muted-light);
  margin-top: 2px;
}


.infra-faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 36px;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

.infra-faq-item {
  border: 1px solid var(--infra-border-light);
  border-radius: 18px;
  background: var(--infra-card-bg-light);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.02);
  transition: all 0.25s ease;
}

.infra-faq-item[open] {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.08);
}

.hstdr-dark .infra-faq-item[open] {
  border-color: var(--infra-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.infra-faq-summary {
  cursor: pointer;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 800;
  color: var(--infra-text-main-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

.infra-faq-summary::-webkit-details-marker {
  display: none;
}

.infra-faq-summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 13px;
  color: #94a3b8;
  transition: transform 0.25s ease, color 0.2s ease;
  margin-left: 16px;
}

.infra-faq-item[open] .infra-faq-summary::after {
  transform: rotate(180deg);
  color: var(--infra-primary);
}

.infra-faq-content {
  padding: 0 24px 22px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--infra-text-muted-light);
  border-top: 1px solid var(--infra-border-light);
  padding-top: 16px;
}


.infra-cta-card {
  margin-top: 60px;
  padding: 48px 36px;
  border-radius: 28px;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.infra-cta-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  pointer-events: none;
}

.infra-cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: 28px;
}

.infra-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 14px;
  background: var(--infra-primary);
  color: #ffffff !important;
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
  transition: all 0.25s ease;
}

.infra-btn-primary:hover {
  background: var(--infra-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
}

.infra-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  color: #ffffff !important;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all 0.25s ease;
}

.infra-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-2px);
}


.infra-guide-card {
  padding: 32px 28px;
  border-radius: 24px;
  background-color: var(--infra-card-bg-light);
  border: 1px solid var(--infra-border-light);
  box-shadow: var(--infra-shadow-light);
  color: var(--infra-text-muted-light);
  line-height: 1.75;
  transition: all 0.3s ease;
}

.infra-guide-card:hover {
  transform: translateY(-3px);
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: 0 16px 36px -10px rgba(37, 99, 235, 0.12);
}

.infra-guide-card h3 {
  color: var(--infra-text-main-light);
}

.infra-guide-card strong {
  color: var(--infra-text-main-light);
}