* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
  -webkit-font-smoothing: antialiased;
}

.page-wrapper {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

.card {
  background: #020617;
  border-radius: 16px;
  border: 1px solid #1f2937;
  box-shadow: 0 18px 40px rgba(15,23,42,0.7);
  padding: 28px 20px 32px;
}

@media (min-width: 768px) {
  .card {
    padding: 32px 40px 40px;
  }
}

.logo {
  font-weight: 800;
  font-size: 22px;
  color: #38bdf8;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.logo span {
  color: #e5e7eb;
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  margin-left: 6px;
}

.subtitle {
  font-size: 13px;
  color: #9ca3af;
  margin-bottom: 20px;
}

h1 {
  font-size: 24px;
  margin: 0 0 8px;
  color: #f9fafb;
}

.updated {
  font-size: 12px;
  color: #6b7280;
  margin-bottom: 16px;
}

.lang-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.lang-switch a {
  text-decoration: none;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid #1d4ed8;
  color: #e5e7eb;
  background: linear-gradient(135deg, #1d4ed8, #0f172a);
}

.lang-switch a:hover {
  background: linear-gradient(135deg, #2563eb, #020617);
}

.section-title {
  font-size: 18px;
  margin: 22px 0 8px;
  color: #f9fafb;
}

h2, h3 {
  color: #f9fafb;
}

h2 {
  font-size: 18px;
  margin: 22px 0 8px;
}

h3 {
  font-size: 15px;
  margin: 16px 0 6px;
}

p {
  font-size: 14px;
  line-height: 1.6;
  margin: 4px 0 10px;
  color: #e5e7eb;
}

ul, ol {
  font-size: 14px;
  line-height: 1.6;
  margin: 4px 0 10px 20px;
  color: #e5e7eb;
}

.note {
  background: rgba(37,99,235,0.15);
  border-left: 3px solid #60a5fa;
  padding: 10px 12px;
  font-size: 13px;
  color: #e5e7eb;
  border-radius: 6px;
  margin: 10px 0 16px;
}

.muted {
  font-size: 12px;
  color: #9ca3af;
}

hr {
  border: none;
  border-top: 1px solid #1f2937;
  margin: 24px 0;
}


/* Language dropdown */
.lang-switch {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: 16px;
  position: relative;
}

.lang-current {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid #1d4ed8;
  background: linear-gradient(135deg, #1d4ed8, #0f172a);
  color: #e5e7eb;
  font-size: 13px;
  cursor: pointer;
}

.lang-current span.arrow {
  font-size: 11px;
  opacity: 0.8;
}

.lang-menu {
  position: absolute;
  top: 36px;
  right: 0;
  min-width: 170px;
  background: #020617;
  border-radius: 10px;
  border: 1px solid #1f2937;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.6);
  padding: 4px;
  display: none;
  z-index: 20;
}

.lang-menu.open {
  display: block;
}

.lang-menu button {
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: #e5e7eb;
  font-size: 13px;
  cursor: pointer;
}

.lang-menu button:hover {
  background: #111827;
}