* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background-color: #0D0E12;
  color: #FFFFFF;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
  padding: 24px 20px 80px;
}
.container {
  max-width: 820px;
  margin: 0 auto;
}
header {
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 24px;
  font-weight: 900;
  color: #FFFFFF;
  text-decoration: none;
}
.logo span {
  color: #FF4C00;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-link {
  color: #A0A5B5;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s;
}
.nav-link:hover {
  color: #FFFFFF;
}
.cta-nav {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 9999px;
  transition: all 0.2s ease;
}
.cta-nav:hover {
  background: linear-gradient(135deg, #FF5A00, #E62E00);
  border-color: #FF4C00;
}
.breadcrumbs {
  font-size: 13px;
  color: #A0A5B5;
  margin-bottom: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.breadcrumbs a {
  color: #A0A5B5;
  text-decoration: none;
  transition: color 0.15s;
}
.breadcrumbs a:hover {
  color: #FFFFFF;
}
.breadcrumbs .sep {
  color: #555A6B;
}
.article-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 76, 0, 0.15);
  border: 1px solid rgba(255, 76, 0, 0.35);
  border-radius: 9999px;
  color: #FF4C00;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
h1 {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  color: #8C92A4;
  font-size: 13px;
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.intro-lead {
  font-size: 18px;
  line-height: 1.7;
  color: #DDE2EE;
  margin-bottom: 28px;
  font-weight: 500;
}
.toc-box {
  background: #12141A;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 16px;
  padding: 22px 26px;
  margin-bottom: 36px;
}
.toc-title {
  font-size: 15px;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toc-list a {
  color: #A0A5B5;
  text-decoration: none;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.15s;
}
.toc-list a:hover {
  color: #FF5A00;
}
.article-content h2 {
  font-size: clamp(22px, 3.5vw, 28px);
  font-weight: 800;
  margin-top: 44px;
  margin-bottom: 18px;
  color: #FFFFFF;
  letter-spacing: -0.01em;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.article-content h3 {
  font-size: 19px;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 12px;
  color: #F0F2F8;
}
.article-content p {
  color: #B2B8C8;
  margin-bottom: 20px;
  font-size: 16px;
  line-height: 1.75;
}
.article-content strong {
  color: #FFFFFF;
  font-weight: 700;
}
.article-content ul, .article-content ol {
  color: #B2B8C8;
  margin-bottom: 24px;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.75;
}
.article-content li {
  margin-bottom: 10px;
}
.tip-card {
  background: rgba(255, 76, 0, 0.08);
  border-left: 4px solid #FF4C00;
  border-radius: 0 14px 14px 0;
  padding: 18px 22px;
  margin: 28px 0;
}
.tip-card h4 {
  color: #FF4C00;
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tip-card p {
  color: #DDE2EE;
  font-size: 14.5px;
  margin-bottom: 0;
  line-height: 1.6;
}
.highlight-card {
  background: #141720;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 22px;
  margin: 28px 0;
}
.highlight-card h4 {
  color: #FFFFFF;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}
.highlight-card p {
  color: #A0A5B5;
  font-size: 14.5px;
  margin-bottom: 0;
}
.mid-cta {
  background: linear-gradient(135deg, #1C1F2B 0%, #12141A 100%);
  border: 1px solid rgba(255, 76, 0, 0.35);
  border-radius: 20px;
  padding: 32px 28px;
  text-align: center;
  margin: 44px 0;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}
.mid-cta h3 {
  font-size: 22px;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 10px;
}
.mid-cta p {
  color: #A0A5B5;
  font-size: 15px;
  margin-bottom: 22px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}
.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 9999px;
  background: linear-gradient(260deg, #FF5A00 0%, #FF4C00 50%, #E62E00 100%);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(255, 76, 0, 0.4);
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(255, 76, 0, 0.6);
}
.hub-hero {
  text-align: center;
  padding: 24px 0 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 40px;
}
.hub-hero h1 {
  font-size: clamp(32px, 5.5vw, 48px);
  margin-bottom: 16px;
}
.hub-hero p {
  color: #A0A5B5;
  font-size: 17px;
  max-width: 600px;
  margin: 0 auto;
}
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 60px;
}
@media (min-width: 680px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid .featured {
    grid-column: span 2;
  }
}
.article-card {
  background: #12141A;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s, border-color 0.2s;
  text-decoration: none;
}
.article-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 76, 0, 0.4);
}
.card-tag {
  color: #FF4C00;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.card-title {
  font-size: 19px;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.35;
  margin-bottom: 12px;
}
.card-desc {
  font-size: 14px;
  color: #8C92A4;
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}
.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: #686D7D;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.read-more {
  color: #FF5A00;
  font-weight: 700;
}
footer {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 13px;
  color: #686D7D;
}
.footer-links {
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-links a {
  color: #8C92A4;
  text-decoration: none;
}
.footer-links a:hover {
  color: #FFFFFF;
}