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

:root {
  --color-bg: #05070B;
  --color-bg-secondary: #0F1318;
  --color-card: #1A1F2B;
  --color-text: #FFFFFF;
  --color-text-secondary: #A0A8B8;
  --color-text-tertiary: #6B7280;
  --color-primary: #E02424;
  --color-primary-dark: #B81C1C;
  --color-border: #2D3847;
  --color-border-light: #1F2536;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.15);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.header {
  position: sticky;
  top: 0;
  background: rgba(5, 7, 11, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-image {
  height: 140px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(224, 36, 36, 0.3));
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
  justify-content: center;
  margin-left: 48px;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
}

.nav-cta {
  margin-left: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
  border: none;
  text-decoration: none;
}

.btn:hover {
  opacity: 0.9;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.blog-hero {
  padding: 64px 0 32px;
  text-align: center;
}

.blog-hero h1 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.blog-hero p {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 32px 0 80px;
}

.blog-card {
  background: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.blog-card:hover {
  border-color: var(--color-border);
  transform: translateY(-2px);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-tertiary);
}

.blog-card-tag {
  background: rgba(224, 36, 36, 0.12);
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.blog-card h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.blog-card p {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

.blog-card-link {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.blog-card-link:hover {
  text-decoration: underline;
}

.post-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

.post-header {
  padding: 48px 0 32px;
}

.post-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  transition: color 0.2s;
}

.post-back:hover {
  color: var(--color-text);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-bottom: 16px;
}

.post-tag {
  background: rgba(224, 36, 36, 0.12);
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.post-header h1 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.post-header .post-subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.post-content {
  padding-bottom: 64px;
}

.post-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
  letter-spacing: -0.01em;
}

.post-content h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 32px 0 12px;
}

.post-content p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.post-content ul,
.post-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.post-content li {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.post-content strong {
  color: var(--color-text);
  font-weight: 600;
}

.post-content blockquote {
  border-left: 3px solid var(--color-primary);
  padding: 16px 24px;
  margin: 24px 0;
  background: rgba(224, 36, 36, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.post-content blockquote p {
  color: var(--color-text);
  margin-bottom: 0;
}

.post-cta {
  background: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  margin: 48px 0;
}

.post-cta h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 8px;
}

.post-cta p {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin-bottom: 20px;
}

.post-cta .btn {
  padding: 10px 28px;
  font-size: 15px;
}

.footer {
  border-top: 1px solid var(--color-border-light);
  padding: 32px 0;
  text-align: center;
}

.footer p {
  font-size: 13px;
  color: var(--color-text-tertiary);
}

.footer a {
  color: var(--color-text-secondary);
  margin: 0 8px;
}

.footer a:hover {
  color: var(--color-text);
}

@media (max-width: 600px) {
  .blog-hero h1 {
    font-size: 28px;
  }
  .blog-card {
    padding: 24px;
  }
  .blog-card h2 {
    font-size: 19px;
  }
  .post-header h1 {
    font-size: 26px;
  }
  .nav {
    gap: 16px;
    margin-left: 16px;
  }
  .nav-link {
    display: none;
  }
  .logo-image {
    height: 80px;
  }
}