:root{--color-primary: #4f46e5;--color-primary-hover: #4338ca;--color-primary-light: #eef2ff;--color-background: #fafbfc;--color-surface: #ffffff;--color-surface-hover: #f8fafc;--color-border: #e2e8f0;--color-border-light: #f1f5f9;--color-text-primary: #1e293b;--color-text-secondary: #64748b;--color-text-muted: #94a3b8;--color-success: #10b981;--color-warning: #f59e0b;--color-error: #ef4444;--color-github: #24292f;--color-github-hover: #1b1f23;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", Consolas, Monaco, "Courier New", monospace;--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background-color:var(--color-background);color:var(--color-text-primary);line-height:1.6;min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.25;color:var(--color-text-primary)}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}p{color:var(--color-text-secondary)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-hover)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-size:.9375rem;font-weight:500;line-height:1.5;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:background-color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);text-decoration:none}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background-color:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover{background-color:var(--color-primary-hover);border-color:var(--color-primary-hover);box-shadow:var(--shadow-md);color:#fff}.btn-secondary{background-color:var(--color-surface);color:var(--color-text-primary);border-color:var(--color-border)}.btn-secondary:hover{background-color:var(--color-surface-hover);border-color:var(--color-text-muted);box-shadow:var(--shadow-sm)}.btn-github{background-color:var(--color-github);color:#fff;border-color:var(--color-github)}.btn-github:hover{background-color:var(--color-github-hover);border-color:var(--color-github-hover);box-shadow:var(--shadow-md);color:#fff}.btn-danger{background-color:#fff;color:var(--color-error);border-color:var(--color-border)}.btn-danger:hover{background-color:#fef2f2;border-color:var(--color-error)}.btn-lg{padding:var(--spacing-md) var(--spacing-xl);font-size:1rem}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:.875rem}.card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.card-body{padding:var(--spacing-xl)}.avatar{width:3rem;height:3rem;border-radius:var(--radius-full);object-fit:cover;border:2px solid var(--color-border-light)}.avatar-lg{width:5rem;height:5rem}.avatar-sm{width:2rem;height:2rem}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.text-secondary{color:var(--color-text-secondary)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}@media(max-width:768px){:root{--spacing-lg: 1rem;--spacing-xl: 1.5rem;--spacing-2xl: 2rem;--spacing-3xl: 2.5rem}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}.btn-lg{padding:var(--spacing-sm) var(--spacing-lg);font-size:.9375rem}}@media(max-width:480px){h1{font-size:1.75rem}.container{padding:0 var(--spacing-md)}}