body {
  background-color: #0f0f0f;
  color: #e0e0e0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 0;
}
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 30px 20px 60px;
}
a {
  color: #bb86fc;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
h1, h2, h3 {
  color: #ffffff;
}
h1 {
  margin-bottom: 10px;
}
h2 {
  border-bottom: 1px solid #333;
  padding-bottom: 8px;
  margin-top: 40px;
}
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}
.language-toggle {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}
.language-toggle button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(187,134,252,0.5);
  background-color: rgba(18,18,18,0.6);
  color: #e0e0e0;
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.language-toggle button img {
  height: 18px;
  width: 26px;
  border-radius: 4px;
}
.language-toggle button:hover {
  border-color: rgba(187,134,252,0.9);
  transform: translateY(-1px);
}
.language-toggle button.active {
  background-color: rgba(187,134,252,0.2);
  border-color: rgba(187,134,252,1);
}
.intro {
  background: linear-gradient(135deg, rgba(187,134,252,0.1), rgba(3,218,197,0.1));
  border: 1px solid rgba(187,134,252,0.35);
  border-radius: 12px;
  padding: 24px;
  line-height: 1.6;
}
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 20px;
}
.download-card {
  background-color: #161616;
  border: 1px solid #2c2c2c;
  border-radius: 10px;
  padding: 20px;
}
.download-card h3 {
  margin-top: 0;
}
.button {
  display: inline-block;
  background-color: #bb86fc;
  color: #121212;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  margin-top: 12px;
  transition: background-color 0.2s ease, transform 0.2s ease;
}
.button:hover {
  background-color: #d9b6ff;
  text-decoration: none;
  transform: translateY(-1px);
}
.step-list {
  counter-reset: step;
  margin: 0;
  padding: 0;
}
.step {
  list-style: none;
  background-color: #161616;
  border: 1px solid #2c2c2c;
  border-radius: 12px;
  padding: 24px;
  margin-top: 24px;
  line-height: 1.7;
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: rgba(187,134,252,0.25);
  border: 1px solid rgba(187,134,252,0.6);
  font-weight: 700;
  margin-bottom: 16px;
}
.step img {
  width: 100%;
  max-width: 760px;
  border-radius: 10px;
  border: 1px solid #2c2c2c;
  margin-top: 16px;
}
.note {
  background-color: #1e1e1e;
  border-left: 4px solid #03dac5;
  padding: 18px;
  margin-top: 18px;
}
.note strong {
  display: inline-block;
  margin-right: 6px;
}
.warning {
  background: linear-gradient(135deg, rgba(207,102,121,0.15), rgba(187,134,252,0.12));
  border: 1px solid rgba(207,102,121,0.4);
  border-radius: 12px;
  padding: 24px;
  margin-top: 32px;
  line-height: 1.7;
}
.warning h2 {
  margin-top: 0;
  margin-bottom: 12px;
}
.warning p {
  margin-bottom: 18px;
}
.warning-images {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.warning-images img {
  width: min(50%, 360px);
  border-radius: 10px;
  border: 1px solid #2c2c2c;
}
.mode-options {
  margin-top: 16px;
  padding-left: 22px;
}
.mode-options li {
  margin-bottom: 12px;
}
.mode-options strong {
  display: block;
  margin-bottom: 4px;
}
.footer-note {
  margin: 24px 0;
  font-size: 0.95rem;
  color: #bdbdbd;
}