:root{--color-bg:#fff;--color-surface:#f8f9fa;--color-fg:#0b0b0c;--color-primary:#2563eb;--color-muted:#6b7280;--color-accent:#06b6d4;--color-success:#16a34a;--color-error:#dc2626;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--space-md:1rem;--space-lg:1.5rem;--font-body:ui-sans-serif,system-ui;--shadow-1:0 1px 2px rgba(0,0,0,.06),0 1px 1px rgba(0,0,0,.04);--shadow-2:0 4px 10px rgba(0,0,0,.08);--shadow-3:0 10px 24px rgba(0,0,0,.12);--color-primary:#4f46e5;--color-primary-dark:#3730a3;--color-primary-light:#6366f1;--color-secondary:#64748b;--color-success:#10b981;--color-warning:#f59e0b;--color-error:#ef4444;--color-background:#fff;--color-surface:#f8fafc;--color-text:#0f172a;--color-text-secondary:#64748b;--radius-sm:0.25rem;--radius-md:0.5rem;--radius-lg:0.75rem;--radius-xl:1rem;--radius-2xl:1.5rem;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1);--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--font-size-xs:0.75rem;--font-size-sm:0.875rem;--font-size-md:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-weight-normal:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--line-height-tight:1.25;--line-height-normal:1.5;--line-height-relaxed:1.75;--transition-fast:150ms ease-in-out;--transition-normal:250ms ease-in-out;--transition-slow:350ms ease-in-out}@tailwind base;@tailwind components;@tailwind utilities;body{font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif}.min-h-screen{min-height:100vh}.shadow-card{box-shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06)}button:hover{transform:translateY(-1px)}.rounded-2xl:hover,button:hover{transition:transform .2s ease-in-out}.rounded-2xl:hover{transform:translateY(-2px)}.bg-primary{background-color:var(--color-primary)}.text-primary{color:var(--color-primary)}.border-primary{border-color:var(--color-primary)}.bg-surface{background-color:var(--color-surface)}.bg-page{background-color:var(--color-bg)}.text-muted{color:var(--color-muted)}.card{background-color:#fff;border-radius:var(--radius-xl);box-shadow:var(--shadow-2)}h1,h2,h3{color:var(--color-fg);letter-spacing:-.01em}h1{line-height:1.1}p{color:var(--color-muted)}section{scroll-margin-top:80px}