* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, sans-serif; color: #0f172a; line-height: 1.6; background: #fff; }
header { border-radius: 50px; margin: 16px; background: #fff; border: 1px solid #e5e7eb; position: sticky; top: 16px; z-index: 100; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.header-container { padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; }
.logo { text-decoration: none; display: flex; align-items: center; }
.logo img { height: 36px; width: auto; filter: brightness(0); }
nav ul { display: flex; list-style: none; gap: 24px; align-items: center; }
nav a { text-decoration: none; color: #0f172a; font-weight: 500; font-size: 15px; }
.nav-btn { background: #0f172a !important; color: white !important; padding: 10px 20px; border-radius: 50px; }
.mobile-menu-toggle { display: none; }
.hero-mini { background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%); padding: 48px 0; margin-bottom: 48px; }
.hero-mini h1 { color: #fff; font-size: 2.5rem; margin-bottom: 16px; }
.hero-mini .breadcrumb { color: #94a3b8; }
.hero-mini .breadcrumb a { color: #60a5fa; text-decoration: none; }
.content-grid { display: grid; grid-template-columns: 1fr 340px; gap: 48px; margin-bottom: 64px; }
.main-content h2 { color: #0f172a; font-size: 1.5rem; margin: 32px 0 16px; }
.main-content h2:first-child { margin-top: 0; }
.main-content h3 { color: #0f172a; font-size: 1.15rem; margin: 24px 0 8px; }
.main-content p { margin-bottom: 16px; color: #475569; }
.main-content ul { margin: 0 0 16px 24px; color: #475569; }
.main-content li { margin-bottom: 8px; }
.highlight-box { background: #ffffff; border: 1px solid #e5e7eb; padding: 24px; margin: 24px 0; border-radius: 16px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.highlight-box h3 { color: #0f172a; margin-bottom: 8px; font-size: 1.1rem; }
.highlight-box p { margin-bottom: 8px; }
.highlight-box p:last-child { margin-bottom: 0; }
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card { background: #f8fafc; border-radius: 12px; padding: 24px; }
.sidebar-card h3 { font-size: 1.1rem; margin-bottom: 16px; color: #0f172a; }
.related-terms { list-style: none; }
.related-terms li { padding: 8px 0; border-bottom: 1px solid #e2e8f0; }
.related-terms li:last-child { border-bottom: none; }
.related-terms a { color: #3b82f6; text-decoration: none; }
.cta-card { background: #0f172a; border-radius: 16px; padding: 24px; color: #fff; }
.cta-card h3 { color: #fff; margin-bottom: 8px; }
.cta-card p { color: #e0e7ff; margin-bottom: 16px; font-size: 0.95rem; }
.cta-btn { display: inline-block; background: #fff; color: #0f172a; padding: 12px 24px; border-radius: 50px; text-decoration: none; font-weight: 600; }
.back-link { margin-bottom: 48px; }
.back-link a { color: #3b82f6; text-decoration: none; font-weight: 500; }
footer { background: #0f172a; color: #94a3b8; padding: 48px 0 24px; margin-top: 64px; }
.footer-content { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-bottom: 32px; }
.footer-col h4 { color: #fff; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: #94a3b8; text-decoration: none; }
.footer-bottom { border-top: 1px solid #1e293b; padding-top: 24px; text-align: center; }
@media (max-width: 900px) { .content-grid { grid-template-columns: 1fr; } .footer-content { grid-template-columns: repeat(2, 1fr); } nav ul { display: none; } .mobile-menu-toggle { display: block; background: none; border: none; font-size: 24px; cursor: pointer; } }