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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #1F2328;
  background: #ffffff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.k-navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: #ffffff;
  border-bottom: 1px solid #d0d7de;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.nav-section-left { display: flex; align-items: center; gap: 16px; }
.k-logo { display: flex; align-items: center; gap: 12px; }

.domain-path {
  color: #1F2328;
  font-size: 16px;
  font-weight: 500;
}

.main-content-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  min-height: calc(100vh - 73px);
}

.k-download-panel {
  max-width: 480px;
  width: 100%;
  text-align: center;
}

.panel-header { margin-bottom: 32px; }

.content-icon-large {
  width: 80px;
  height: 80px;
  color: #0969da;
  margin-bottom: 24px;
}

.panel-title {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.3;
}

.panel-subtitle {
  font-size: 16px;
  color: #656d76;
  line-height: 1.5;
}

.download-card {
  background: #ffffff;
  border: 1px solid #d0d7de;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
}

.content-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f6f8fa;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 500;
}

.version-badge {
  background: #dafbe1;
  color: #1a7f37;
  border: 1px solid rgba(27, 31, 36, 0.15);
  border-radius: 12px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 500;
}

.security-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
  padding: 16px;
  background: #f6f8fa;
  border-radius: 8px;
  border: 1px solid #d0d7de;
}

.security-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #1F2328;
}

.security-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #1a7f37;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(26, 127, 55, 0.12);
}

.loader-wrap {
  padding: 18px 16px;
  border: 1px solid #d0d7de;
  border-radius: 10px;
  background: #ffffff;
  margin-bottom: 18px;
}

.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid #d0d7de;
  border-top: 3px solid #0969da;
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  margin: 0 auto 12px;
}

.loader-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.loader-muted {
  font-size: 13px;
  color: #656d76;
}

.verification-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.verification-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: #656d76;
  background: #f6f8fa;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  padding: 6px 10px;
}

.check-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #1a7f37;
  flex-shrink: 0;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .k-navbar { padding: 12px 16px; }
  .main-content-area { padding: 24px 16px; }
  .download-card { padding: 24px; }
  .panel-title { font-size: 24px; }
  .card-header { flex-direction: column; gap: 12px; align-items: center; }
  .verification-badges { flex-direction: column; gap: 8px; }
}