*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#fafafa;--color-surface:#ffffff;--color-border:#e5e7eb;--color-text-primary:#111827;--color-text-secondary:#6b7280;--color-text-muted:#9ca3af;--color-accent:#111827;--color-accent-hover:#374151;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-mono:"SF Mono","Fira Code","Fira Mono",monospace}html{font-size:16px;-webkit-font-smoothing:antialiased}body{background:var(--color-bg);color:var(--color-text-primary);font-family:var(--font-sans);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}a{color:inherit;text-decoration:none}.card{display:block;background:#ffffff;border:1px solid #e5e7eb;border-radius:12px;padding:24px;cursor:pointer;transition:border-color .15s ease,box-shadow .15s ease}.card:hover{border-color:#111827;box-shadow:0 4px 16px rgba(0,0,0,.08)}.footer-link:hover{color:#111827}