body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: #f4f7fa;
  margin: 0;
  padding: 0;
  color: #23272f;
}
.container {
  max-width: 900px;
  margin: 48px auto;
  background: #fff;
  padding: 40px 32px;
  border-radius: 14px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.09);
}
h1 {
  color: #1a237e;
  margin-bottom: 20px;
  font-size: 2.2rem;
  letter-spacing: 0.5px;
}
h2 {
  color: #1976d2;
  margin-top: 36px;
  margin-bottom: 12px;
  font-size: 1.3rem;
  border-left: 4px solid #1976d2;
  padding-left: 10px;
  background: #f0f7ff;
  border-radius: 3px;
}
p,
ul,
ol,
li {
  font-size: 1.08rem;
  line-height: 1.7;
}
ul,
ol {
  margin-bottom: 18px;
  padding-left: 28px;
}
li {
  margin-bottom: 8px;
}
pre,
code {
  background: #23272f;
  color: #e3eafc;
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 1rem;
  font-family: "Fira Mono", "Consolas", monospace;
}
pre {
  overflow-x: auto;
  margin-bottom: 22px;
  margin-top: 6px;
}
.tip {
  background: #e3f2fd;
  border-left: 5px solid #1976d2;
  padding: 14px 20px;
  margin: 24px 0;
  border-radius: 6px;
  color: #1976d2;
  font-size: 1.05rem;
}
.command-block {
  background: #23272f;
  color: #e3eafc;
  border-radius: 6px;
  padding: 16px 18px;
  font-size: 1.08rem;
  font-family: "Fira Mono", "Consolas", monospace;
  margin-bottom: 24px;
  margin-top: 10px;
  white-space: pre-line;
  line-height: 2.1;
  box-shadow: 0 2px 8px rgba(25, 118, 210, 0.07);
  letter-spacing: 0.01em;
}
pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
  font-family: inherit;
}
.article-link {
  text-decoration: none;
  color: inherit;
}

.article-card {
  background: #f8f9fa;
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  padding: 24px 20px;
  margin: 16px 0;
  transition: box-shadow 0.2s, transform 0.2s;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  cursor: pointer;
}
.article-card:hover {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px) scale(1.02);
  background: #eef6ff;
}
.article-card h2 {
  margin: 0 0 8px 0;
  font-size: 1.3em;
  color: #1a237e;
}
.article-card p {
  margin: 0;
  color: #333;
  font-size: 1em;
}
@media (max-width: 600px) {
  .container {
    padding: 16px 4px;
  }
  h1 {
    font-size: 1.3rem;
  }
  h2 {
    font-size: 1.05rem;
  }
  pre,
  code {
    font-size: 0.95rem;
    padding: 7px 6px;
  }
}