body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #050315;
  color: #f7f7ff;
}

a { color: #9d8cff; text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #090320;
  border-bottom: 1px solid #26233a;
}

header .brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

header img.logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

header h1 {
  font-size: 18px;
  margin: 0;
}

.lang-switch {
  display: flex;
  gap: 8px;
}

.lang-switch button {
  border: 1px solid #413c7a;
  background: #15102c;
  color: #f7f7ff;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
}

.lang-switch button.active {
  background: #9d8cff;
  color: #050315;
  border-color: #9d8cff;
}

main {
  max-width: 900px;
  margin: 24px auto 64px;
  padding: 0 16px 32px;
}

.section {
  background: #120c32;
  border-radius: 16px;
  padding: 20px 18px;
  margin-bottom: 18px;
  border: 1px solid #26233a;
}

.section h2 {
  margin-top: 0;
  font-size: 18px;
}

.section h3 {
  margin-top: 12px;
  font-size: 16px;
}

.section ul {
  padding-left: 18px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  background: #201547;
  border: 1px solid #413c7a;
  margin-bottom: 8px;
}

.step-grid {
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 12px;
}

.step-card {
  background: #190f3c;
  border-radius: 12px;
  padding: 14px 14px 12px;
  border: 1px solid #2f2858;
}

.step-card h3 {
  margin: 0 0 6px;
}

.step-card p {
  margin: 0 0 8px;
  font-size: 14px;
}

.step-card a.button {
  display: inline-block;
  margin-top: 4px;
  padding: 6px 10px;
  border-radius: 8px;
  background: #9d8cff;
  color: #050315;
  font-size: 13px;
  font-weight: 500;
}

.cert-images {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

.cert-images img {
  max-width: 260px;
  border-radius: 8px;
  border: 1px solid #2f2858;
}

footer {
  border-top: 1px solid #26233a;
  padding: 16px;
  text-align: center;
  font-size: 13px;
  color: #c4c2ff;
  background: #090320;
}

pre.code-block {
  background: #050315;
  border-radius: 12px;
  padding: 12px;
  overflow-x: auto;
  font-size: 12px;
  line-height: 1.4;
  border: 1px solid #26233a;
  white-space: pre-wrap;
}

@media (min-width: 768px) {
  .step-grid {
    grid-template-columns: repeat(2, minmax(0,1fr));
  }
}