:root{--font-family-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-size-base: 16px;--line-height-base: 1.6;--color-bg-primary: #ffffff;--color-bg-secondary: #f4f5f7;--color-text-primary: #1f2937;--color-text-secondary: #4b5563;--color-text-muted: #6b7280;--color-accent: #3b82f6;--color-accent-hover: #2563eb;--color-border: #e5e7eb;--max-width: 900px;--spacing-xs: 0.5rem;--spacing-sm: 1rem;--spacing-md: 2rem;--spacing-lg: 4rem;--spacing-xl: 6rem;--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);--border-radius: 12px;--transition-fast: 0.2s ease-in-out}@media (prefers-color-scheme: dark){:root{--color-bg-primary: #111827;--color-bg-secondary: #1f2937;--color-text-primary: #f9fafb;--color-text-secondary: #d1d5db;--color-text-muted: #9ca3af;--color-accent: #60a5fa;--color-accent-hover: #93c5fd;--color-border: #374151;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3)}}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html,body{background-color:var(--color-bg-primary);color:var(--color-text-primary);font-family:var(--font-family-body);font-size:var(--font-size-base);line-height:var(--line-height-base);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;transition:background-color var(--transition-fast),color var(--transition-fast)}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover);text-decoration:underline}img{max-width:100%;height:auto;display:block}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--color-text-primary);margin-top:var(--spacing-md);margin-bottom:var(--spacing-sm)}h1{font-size:2.5rem;letter-spacing:-0.02em}h2{font-size:2rem;letter-spacing:-0.01em;border-bottom:1px solid var(--color-border);padding-bottom:var(--spacing-xs);margin-top:var(--spacing-lg)}h3{font-size:1.5rem}h4{font-size:1.25rem}p{margin-bottom:var(--spacing-sm);color:var(--color-text-secondary)}ul,ol{margin-bottom:var(--spacing-md);padding-left:1.5rem;color:var(--color-text-secondary)}li{margin-bottom:var(--spacing-xs)}strong{font-weight:600;color:var(--color-text-primary)}em{font-style:italic;color:var(--color-text-muted)}.container{max-width:var(--max-width);margin:0 auto;padding:0 var(--spacing-md)}.page-content{padding-top:100px;padding-bottom:var(--spacing-xl);min-height:80vh}.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background-color:rgba(var(--color-bg-primary), 0.85);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border);transition:background-color var(--transition-fast)}@media (prefers-color-scheme: light){.site-header{background-color:rgba(255,255,255,0.85)}}@media (prefers-color-scheme: dark){.site-header{background-color:rgba(17,24,39,0.85)}}.site-header .container{display:flex;justify-content:space-between;align-items:center;height:70px}.site-title{font-size:1.25rem;font-weight:700;color:var(--color-text-primary);letter-spacing:-0.02em}.site-title:hover{color:var(--color-accent);text-decoration:none}.site-nav ul{list-style:none;display:flex;gap:var(--spacing-md);margin:0;padding:0}.site-nav a{color:var(--color-text-secondary);font-weight:500}.site-nav a:hover{color:var(--color-accent);text-decoration:none}.hero-section{display:grid;grid-template-columns:1fr;gap:var(--spacing-lg);margin-top:var(--spacing-md);margin-bottom:var(--spacing-xl)}@media (min-width: 768px){.hero-section{grid-template-columns:2fr 1fr;align-items:start}}.hero-content{font-size:1.125rem}.hero-content p{color:var(--color-text-primary)}.hero-sidebar{display:flex;flex-direction:column;align-items:center;text-align:center;background:var(--color-bg-secondary);padding:var(--spacing-md);border-radius:var(--border-radius);box-shadow:var(--shadow-sm)}.hero-sidebar img{border-radius:var(--border-radius);width:100%;max-width:280px;height:auto;aspect-ratio:4 / 5;object-fit:cover;margin-bottom:var(--spacing-sm);box-shadow:var(--shadow-md);border:4px solid var(--color-bg-primary)}.hero-sidebar a{font-weight:500}.site-footer{border-top:1px solid var(--color-border);padding:var(--spacing-lg) 0;text-align:center;color:var(--color-text-muted);font-size:0.875rem}.site-footer p{margin:0;color:inherit}