*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #0f172a;
  background: linear-gradient(180deg, #f3f4ff 0%, #f9fafb 40%, #ffffff 100%);
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.04);
}

.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo-block {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-circle {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: 13px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-weight: 700;
  font-size: 15px;
}

.logo-subtitle {
  font-size: 11px;
  color: #6b7280;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: #111827;
}

.nav-links a {
  opacity: 0.8;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-text {
  border: none;
  background: transparent;
  font-size: 13px;
  cursor: pointer;
}

.btn-primary {
  border: none;
  background: #2563eb;
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-outline {
  border-radius: 999px;
  border: 1px solid #cbd5f5;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.2fr);
  gap: 32px;
  align-items: center;
  margin-bottom: 40px;
}

.hero-text h1 {
  font-size: clamp(28px, 3vw, 36px);
  line-height: 1.1;
  margin-bottom: 12px;
}

.accent {
  color: #2563eb;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: #e0ecff;
  color: #1d4ed8;
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 10px;
}

.hero-desc {
  font-size: 14px;
  color: #4b5563;
  margin-bottom: 16px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.stat-chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: #e0ecff;
}

.stat-value {
  font-size: 14px;
  font-weight: 700;
  color: #1d4ed8;
}

.stat-label {
  font-size: 11px;
  color: #111827;
}

.hero-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

.hero-card h2 {
  font-size: 18px;
  margin-bottom: 8px;
}

.hero-card p {
  font-size: 13px;
  color: #4b5563;
}

.hero-card .full-width {
  width: 100%;
  margin: 14px 0 8px;
}

.hero-note {
  font-size: 11px;
  color: #6b7280;
}

.section {
  margin-top: 40px;
  margin-bottom: 8px;
}

.section-alt {
  background: rgba(255, 255, 255, 0.65);
  border-radius: 18px;
  padding: 24px 20px;
}

.section h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.section-lead {
  font-size: 14px;
  color: #4b5563;
  max-width: 640px;
  margin-bottom: 16px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: #ffffff;
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 12px 22px rgba(15, 23, 42, 0.05);
  font-size: 13px;
}

.card h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.card p {
  color: #4b5563;
}

.hardware-card ul {
  margin-top: 8px;
  padding-left: 18px;
}

.hardware-card li {
  margin-bottom: 4px;
  font-size: 13px;
  color: #111827;
}

.hardware-sub {
  margin-bottom: 8px;
}

.json-link {
  margin-top: 10px;
  font-size: 11px;
  color: #4b5563;
}

code {
  display: inline-block;
  margin-top: 4px;
  padding: 4px 6px;
  border-radius: 6px;
  background: #0f172a;
  color: #e5e7eb;
  font-size: 11px;
  word-break: break-all;
}

.about-text {
  font-size: 13px;
  color: #4b5563;
  max-width: 700px;
}

.footer {
  margin-top: 40px;
  padding: 16px 20px 24px;
  text-align: center;
  font-size: 12px;
  color: #6b7280;
  border-top: 1px solid #e5e7eb;
}

.footer p + p {
  margin-top: 4px;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .topbar-inner {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-links {
    display: none;
  }

  .hero {
    gap: 20px;
  }

  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }
}