* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif; line-height: 1.7; color: #1e293b; background: linear-gradient(135deg, #fafaf9 0%, #e7e5e4 100%); min-height: 100vh; }
.container { max-width: 900px; margin: 0 auto; padding: 2rem; }
header { background: white; border-bottom: 2px solid #d6d3d1; padding: 1.5rem 0; margin-bottom: 3rem; box-shadow: 0 2px 8px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 100; }
.header-content { max-width: 1200px; margin: 0 auto; padding: 0 2rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.logo-link { text-decoration: none; }
h1 { font-size: 2rem; font-weight: 900; background: linear-gradient(135deg, #57534e 0%, #78716c 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.btn-group { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.6rem 1.25rem; border-radius: 9999px; font-weight: 700; text-decoration: none; transition: all 0.3s ease; border: 2px solid #d6d3d1; background: white; color: #57534e; cursor: pointer; font-size: 0.9rem; }
.btn:hover { background: #fafaf9; border-color: #a8a29e; transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, #57534e 0%, #78716c 100%); color: white; border: none; box-shadow: 0 4px 12px rgba(87,83,78,0.25); }
.btn-primary:hover { box-shadow: 0 6px 16px rgba(87,83,78,0.35); transform: translateY(-2px); }
.article-full-container { background: white; border-radius: 28px; padding: 3.5rem; margin-bottom: 2rem; border: 2px solid #e7e5e4; box-shadow: 0 12px 48px rgba(0,0,0,0.08); }
.article-meta { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.article-category { background: linear-gradient(135deg, #57534e 0%, #78716c 100%); color: white; padding: 0.35rem 1rem; border-radius: 9999px; font-weight: 700; font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase; }
.article-date { color: #78716c; font-size: 0.9rem; font-weight: 500; }
.article-full-image { width: 100%; height: 420px; object-fit: cover; border-radius: 18px; margin-bottom: 2.5rem; box-shadow: 0 8px 32px rgba(0,0,0,0.12); }
.article-full-title { font-size: 2.75rem; font-weight: 900; color: #1e293b; margin-bottom: 2rem; line-height: 1.2; letter-spacing: -0.02em; }
.article-full-body { color: #475569; line-height: 1.85; font-size: 1.1rem; }
.article-full-body h3 { font-size: 1.65rem; font-weight: 800; color: #1e293b; margin-top: 2.5rem; margin-bottom: 1rem; letter-spacing: -0.01em; }
.article-full-body h4 { font-size: 1.25rem; font-weight: 700; color: #334155; margin-top: 1.75rem; margin-bottom: 0.75rem; }
.article-full-body p { margin-bottom: 1.5rem; }
.article-full-body ul, .article-full-body ol { margin-bottom: 1.75rem; padding-left: 2.25rem; }
.article-full-body li { margin-bottom: 0.85rem; line-height: 1.8; }
.article-conclusion { margin-top: 2.5rem; padding: 1.75rem 2rem; background: linear-gradient(135deg, #fafaf9 0%, #f5f5f4 100%); border-left: 4px solid #57534e; border-radius: 12px; font-style: italic; color: #57534e; font-size: 1.05rem; line-height: 1.8; }
.share-buttons { margin-top: 2.5rem; padding: 2rem 0 0; border-top: 2px solid #e7e5e4; text-align: center; }
.share-title { font-size: 1.1rem; font-weight: 700; color: #1e293b; margin-bottom: 1.25rem; }
.share-icons { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }
.share-btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.5rem 1rem; border-radius: 9999px; font-weight: 600; font-size: 0.85rem; text-decoration: none; transition: all 0.3s ease; border: none; cursor: pointer; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.share-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.share-btn-facebook { background: #1877F2; color: white; }
.share-btn-linkedin { background: #0A66C2; color: white; }
.share-btn-twitter { background: #000000; color: white; }
.share-btn-copy { background: white; color: #57534e; border: 2px solid #d6d3d1; }
.share-btn-copy:hover { background: #fafaf9; border-color: #a8a29e; }
.share-btn svg { width: 18px; height: 18px; }
.copy-notification { position: fixed; bottom: 2rem; right: 2rem; background: linear-gradient(135deg, #57534e 0%, #78716c 100%); color: white; padding: 1rem 1.5rem; border-radius: 12px; font-weight: 600; box-shadow: 0 8px 24px rgba(0,0,0,0.2); opacity: 0; transform: translateY(20px); transition: all 0.3s ease; z-index: 1000; pointer-events: none; }
.copy-notification.show { opacity: 1; transform: translateY(0); }
.related-articles { margin: 3rem 0 2rem; }
.related-title { font-size: 1.6rem; font-weight: 800; color: #1e293b; margin-bottom: 1.5rem; letter-spacing: -0.01em; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.related-card { background: white; border-radius: 16px; padding: 1.5rem; border: 2px solid #e7e5e4; text-decoration: none; color: inherit; transition: all 0.3s ease; display: block; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.related-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,0.1); border-color: #78716c; }
.related-card-category { background: linear-gradient(135deg, #57534e 0%, #78716c 100%); color: white; padding: 0.25rem 0.75rem; border-radius: 9999px; font-weight: 700; font-size: 0.72rem; letter-spacing: 0.04em; text-transform: uppercase; display: inline-block; margin-bottom: 0.75rem; }
.related-card-title { font-size: 1.05rem; font-weight: 700; color: #1e293b; line-height: 1.4; }
.related-card-arrow { color: #57534e; font-weight: 700; font-size: 0.9rem; margin-top: 0.75rem; display: block; }
.internal-link { color: #57534e; font-weight: 600; text-decoration: underline; text-decoration-color: #a8a29e; text-underline-offset: 3px; transition: color 0.2s ease, text-decoration-color 0.2s ease; }
.internal-link:hover { color: #292524; text-decoration-color: #57534e; }
footer { margin-top: 4rem; padding: 2.5rem 0; text-align: center; color: #78716c; border-top: 2px solid #e7e5e4; background: white; font-size: 0.95rem; }
footer a { color: #57534e; text-decoration: underline; }

@media (max-width: 768px) {
  .container { padding: 1rem; }
  .article-full-container { padding: 1.5rem; }
  .article-full-title { font-size: 2rem; }
  .article-full-image { height: 240px; }
  .article-full-body { font-size: 1rem; }
  .article-full-body h3 { font-size: 1.4rem; }
  .article-full-body h4 { font-size: 1.15rem; }
  h1 { font-size: 1.6rem; }
  .header-content { padding: 0 1rem; }
  .related-grid { grid-template-columns: 1fr; }
}