:root {
  --primary-color: #f7931a;
  --primary-hover: #e88310;
  --text-color: #171717;
  --text-muted: #555555;
  --bg-color: #ffffff;
  --bg-secondary: #f9f9fb;
  --border-color: #e5e5e5;
  --accent-color: #0052ff;
  --max-width: 900px;
  --transition: all 0.3s ease;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  --border-radius: 8px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

header {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 3rem;
  text-align: center;
}

h1, h2, h3, h4 {
  color: var(--text-color);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 3rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  margin-top: 3rem;
}

p {
  margin-bottom: 1.5rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
  text-decoration: none;
  box-shadow: 0 4px 15px rgba(247, 147, 26, 0.3);
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  margin: 2rem 0;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow);
}

.guide-step {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.step-number {
  background: var(--primary-color);
  color: white;
  min-width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

ul, ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

blockquote {
  border-left: 4px solid var(--primary-color);
  padding: 1rem 2rem;
  font-style: italic;
  background: var(--bg-secondary);
  margin: 2rem 0;
}

code {
  background: var(--bg-secondary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: monospace;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  margin: 2rem 0;
}

footer {
  margin-top: 5rem;
  padding: 4rem 0;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  text-align: center;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.6rem; }
  body { font-size: 16px; }
  .guide-step { flex-direction: column; gap: 0.5rem; }
}