:root{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;--font-serif: "Playfair Display", Georgia, "Times New Roman", serif;--font-mono: "JetBrains Mono", "Fira Code", Monaco, Consolas, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--text-6xl: 3.75rem;--font-light: 300;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--leading-none: 1;--leading-tight: 1.25;--leading-snug: 1.375;--leading-normal: 1.5;--leading-relaxed: 1.625;--leading-loose: 2;--tracking-tighter: -.05em;--tracking-tight: -.025em;--tracking-normal: 0;--tracking-wide: .025em;--tracking-wider: .05em;--tracking-widest: .1em;--color-ink: #1a1a1a;--color-ink-light: #3d3d3d;--color-ink-muted: #6b6b6b;--color-ink-subtle: #9a9a9a;--color-paper: #ffffff;--color-paper-warm: #faf9f7;--color-paper-muted: #f5f4f2;--color-paper-subtle: #eceae6;--color-accent: #2d3436;--color-accent-hover: #1a1d1e;--color-accent-light: #636e72;--color-success: #00a86b;--color-success-light: #e6f7f0;--color-warning: #e17055;--color-warning-light: #fdf0ed;--color-error: #d63031;--color-error-light: #fceaea;--color-info: #0984e3;--color-info-light: #e7f3fd;--border-color: #e8e6e3;--border-color-light: #f0eeeb;--border-color-dark: #d5d2cd;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .06), 0 2px 4px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .06), 0 4px 6px -2px rgba(0, 0, 0, .03);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .06), 0 10px 10px -5px rgba(0, 0, 0, .02);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, .15);--space-0: 0;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--radius-none: 0;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--transition-slower: .5s ease;--z-base: 0;--z-above: 10;--z-dropdown: 100;--z-sticky: 200;--z-overlay: 300;--z-modal: 400;--z-toast: 500;--max-w-xs: 20rem;--max-w-sm: 24rem;--max-w-md: 28rem;--max-w-lg: 32rem;--max-w-xl: 36rem;--max-w-2xl: 42rem;--max-w-3xl: 48rem;--max-w-4xl: 56rem;--max-w-5xl: 64rem;--max-w-6xl: 72rem;--max-w-7xl: 80rem;--max-w-prose: 65ch}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-sans);font-size:var(--text-base);font-weight:var(--font-normal);line-height:var(--leading-normal);color:var(--color-ink);background-color:var(--color-paper-warm);min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);font-weight:var(--font-semibold);line-height:var(--leading-tight);color:var(--color-ink);letter-spacing:var(--tracking-tight)}h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}h4{font-size:var(--text-xl)}h5{font-size:var(--text-lg)}h6{font-size:var(--text-base);font-weight:var(--font-semibold)}p{line-height:var(--leading-relaxed);color:var(--color-ink-light)}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover)}small{font-size:var(--text-sm);color:var(--color-ink-muted)}code{font-family:var(--font-mono);font-size:.9em;background:var(--color-paper-muted);padding:.125em .375em;border-radius:var(--radius-sm)}pre{font-family:var(--font-mono);background:var(--color-ink);color:var(--color-paper);padding:var(--space-4);border-radius:var(--radius-md);overflow-x:auto}pre code{background:transparent;padding:0}blockquote{border-left:3px solid var(--color-accent);padding-left:var(--space-4);margin:var(--space-6) 0;font-style:italic;color:var(--color-ink-muted)}img,video{max-width:100%;height:auto;display:block}figure{margin:var(--space-6) 0}figcaption{font-size:var(--text-sm);color:var(--color-ink-muted);text-align:center;margin-top:var(--space-2)}input,textarea,select{font-family:var(--font-sans);font-size:var(--text-base);line-height:var(--leading-normal);color:var(--color-ink);background:var(--color-paper);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:var(--space-3) var(--space-4);width:100%;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px #2d343614}input::placeholder,textarea::placeholder{color:var(--color-ink-subtle)}label{display:block;font-size:var(--text-sm);font-weight:var(--font-medium);color:var(--color-ink);margin-bottom:var(--space-2);letter-spacing:var(--tracking-wide);text-transform:uppercase}button{font-family:var(--font-sans);font-size:var(--text-sm);font-weight:var(--font-medium);line-height:var(--leading-none);letter-spacing:var(--tracking-wide);cursor:pointer;border:none;border-radius:var(--radius-md);padding:var(--space-3) var(--space-5);transition:all var(--transition-fast)}button:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-ink);color:var(--color-paper)}.btn-primary:hover:not(:disabled){background:var(--color-ink-light);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--color-paper);color:var(--color-ink);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background:var(--color-paper-muted);border-color:var(--border-color-dark)}.btn-ghost{background:transparent;color:var(--color-ink-muted)}.btn-ghost:hover:not(:disabled){background:var(--color-paper-muted);color:var(--color-ink)}.container{width:100%;max-width:var(--max-w-6xl);margin:0 auto;padding:0 var(--space-6)}.container-sm{max-width:var(--max-w-3xl)}.container-prose{max-width:var(--max-w-prose)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:var(--space-2)}.gap-3{gap:var(--space-3)}.gap-4{gap:var(--space-4)}.gap-6{gap:var(--space-6)}.grid{display:grid}.text-center{text-align:center}.text-muted{color:var(--color-ink-muted)}.text-subtle{color:var(--color-ink-subtle)}.text-sm{font-size:var(--text-sm)}.text-lg{font-size:var(--text-lg)}.font-serif{font-family:var(--font-serif)}.font-medium{font-weight:var(--font-medium)}.font-semibold{font-weight:var(--font-semibold)}.mt-4{margin-top:var(--space-4)}.mt-6{margin-top:var(--space-6)}.mt-8{margin-top:var(--space-8)}.mb-4{margin-bottom:var(--space-4)}.mb-6{margin-bottom:var(--space-6)}.mb-8{margin-bottom:var(--space-8)}.card{background:var(--color-paper);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border-color-light);transition:box-shadow var(--transition-base),transform var(--transition-base)}.card:hover{box-shadow:var(--shadow-md)}.card-interactive:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(16px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-fadeIn{animation:fadeIn var(--transition-slow) ease-out}.animate-slideIn{animation:slideIn var(--transition-slow) ease-out}.skeleton{background:linear-gradient(90deg,var(--color-paper-muted) 25%,var(--color-paper-subtle) 50%,var(--color-paper-muted) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-sm)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (max-width: 768px){:root{--text-4xl: 2rem;--text-5xl: 2.5rem;--text-6xl: 3rem}.container{padding:0 var(--space-4)}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-paper-muted)}::-webkit-scrollbar-thumb{background:var(--color-ink-subtle);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-ink-muted)}::selection{background:var(--color-ink);color:var(--color-paper)}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}