*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
}
body {
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}
input,
button,
textarea,
select {
  font: inherit;
}
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}
#root,
#__next {
  isolation: isolate;
}
:root {
  --primary-color: #1e3a5f;
  --secondary-color: #2c5f7c;
  --accent-color: #3b82f6;
  --text-primary: #1a1a1a;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --bg-primary: #ffffff;
  --bg-secondary: #f7fafc;
  --bg-accent: #edf2f7;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --max-width: 1200px;
  --content-width: 800px;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  font-size: 16px;
  line-height: 1.6;
}
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}
@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
}
.header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.logo img {
  border-radius: 8px;
}
.logo-text {
  display: flex;
  flex-direction: column;
}
.site-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary-color);
  line-height: 1.2;
}
.tagline {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.1;
}
.subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.1;
}
@media (max-width: 767px) {
  .logo-text {
    display: none;
  }
}
.menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: 0.3s;
}
@media (max-width: 767px) {
  .menu-toggle {
    display: flex;
  }
}
.main {
  min-height: calc(100vh - 200px);
}
.article {
  padding: 2rem 0;
}
@media (min-width: 768px) {
  .article {
    padding: 3rem 0;
  }
}
.article-header {
  text-align: center;
  margin-bottom: 3rem;
  max-width: var(--content-width);
  margin-left: auto;
  margin-right: auto;
}
.article-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1.2;
  margin-bottom: 1rem;
}
@media (min-width: 768px) {
  .article-title {
    font-size: 2.5rem;
  }
}
@media (min-width: 1024px) {
  .article-title {
    font-size: 3rem;
  }
}
.article-meta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}
.article-content {
  max-width: var(--content-width);
  margin: 0 auto;
}
.intro-section {
  margin-bottom: 3rem;
}
.lead {
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--text-secondary);
  font-weight: 400;
  text-align: justify;
}
@media (min-width: 768px) {
  .lead {
    font-size: 1.35rem;
    line-height: 1.8;
  }
}
.content-section {
  margin-bottom: 3rem;
}
.content-section h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  line-height: 1.3;
  border-bottom: 3px solid var(--accent-color);
  padding-bottom: 0.5rem;
}
@media (min-width: 768px) {
  .content-section h2 {
    font-size: 2rem;
  }
}
.content-section h3 {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--secondary-color);
  margin: 2rem 0 1rem 0;
  line-height: 1.4;
}
@media (min-width: 768px) {
  .content-section h3 {
    font-size: 1.5rem;
  }
}
.content-section p {
  margin-bottom: 1.5rem;
  text-align: justify;
  color: var(--text-primary);
  line-height: 1.7;
}
.content-section p:last-child {
  margin-bottom: 0;
}
.article-footer {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 2px solid var(--border-color);
}
.author-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 2rem;
  text-align: center;
}
.author-info {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}
@media (max-width: 767px) {
  .author-info {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}
.author-info img {
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}
.author-details h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 1rem;
}
.author-details p {
  margin-bottom: 1rem;
  text-align: justify;
  line-height: 1.6;
}
.author-details p:last-child {
  margin-bottom: 0;
}
.author-details em {
  font-style: italic;
  color: var(--text-secondary);
}
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: 4rem;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
@media (max-width: 767px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.footer-site-name {
  font-weight: 600;
  color: var(--primary-color);
  font-size: 1rem;
}
.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.footer-info {
  text-align: right;
}
@media (max-width: 767px) {
  .footer-info {
    text-align: center;
  }
}
.footer-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}
.footer-info p:last-child {
  margin-bottom: 0;
}
@media (max-width: 480px) {
  .article-title {
    font-size: 1.75rem;
  }
  .lead {
    font-size: 1.1rem;
  }
  .content-section h2 {
    font-size: 1.5rem;
  }
  .content-section h3 {
    font-size: 1.25rem;
  }
  .container {
    padding: 0 1rem;
  }
  .article {
    padding: 1.5rem 0;
  }
  .author-info {
    gap: 1rem;
  }
}
@media (min-width: 1200px) {
  .container {
    padding: 0 3rem;
  }
  .article {
    padding: 4rem 0;
  }
  .article-header {
    margin-bottom: 4rem;
  }
  .content-section {
    margin-bottom: 4rem;
  }
}