:root{--font-sans: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";--bg-color: #f5f5f7;--surface-color: #ffffff;--text-primary: #1d1d1f;--text-secondary: #86868b;--accent-color: #0066cc;--accent-gradient: linear-gradient(135deg, #0066cc 0%, #004499 100%);--border-color: rgba(0, 0, 0, .1);--glass-bg: rgba(255, 255, 255, .72);--glass-blur: blur(20px);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 12px 24px rgba(0, 0, 0, .12)}*{box-sizing:border-box;margin:0;padding:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background-color:var(--bg-color);color:var(--text-primary);line-height:1.5;overflow-x:hidden}#root{min-height:100vh;display:flex;flex-direction:column}a{text-decoration:none;color:inherit;transition:opacity .2s ease}a:hover{opacity:.8}button{font-family:inherit;border:none;cursor:pointer;transition:all .2s cubic-bezier(.2,.8,.2,1)}button:active{transform:scale(.96)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}.reading-container{max-width:800px!important}.card{background:var(--surface-color);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);padding:24px;transition:transform .4s cubic-bezier(.2,.8,.2,1),box-shadow .4s cubic-bezier(.2,.8,.2,1);animation:fadeIn .6s ease-out forwards}.card:hover{transform:translateY(-8px) scale(1.01);box-shadow:var(--shadow-lg)}.card:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.glass{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-bottom:1px solid var(--border-color)}@media(max-width:640px){.container{padding:0 16px}h2{font-size:32px!important}}.rich-text img{max-width:100%;height:auto;border-radius:var(--radius-md);margin:32px 0;display:block}.rich-text h2{font-size:28px;font-weight:700;margin:48px 0 24px;letter-spacing:-.01em}.rich-text h3{font-size:22px;font-weight:600;margin:32px 0 16px}.rich-text p{margin-bottom:24px}.rich-text ul,.rich-text ol{margin-bottom:24px;padding-left:24px}.rich-text li{margin-bottom:8px}.rich-text blockquote{border-left:4px solid var(--accent-color);background:#f9f9fb;padding:24px;margin:32px 0;border-radius:0 var(--radius-md) var(--radius-md) 0;font-style:italic;color:var(--text-secondary)}.rich-text pre{background:#f5f5f7;padding:24px;border-radius:var(--radius-md);overflow-x:auto;margin:24px 0}.rich-text code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.9em;background:#0000000d;padding:.2em .4em;border-radius:4px}.rich-text table{width:100%;border-collapse:collapse;margin:32px 0}.rich-text th,.rich-text td{border:1px solid var(--border-color);padding:12px 16px;text-align:left}.rich-text th{background:#f5f5f7;font-weight:600}