:root{--color-bg:#fff;--color-accent:#3f7bfc;--color-accent-hover:#2464eb;--color-border:#f1f5f9;--color-text-primary:#0f172a;--color-text-secondary:#475569;--color-text-muted:#64748b;--font-stack:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--max-width:960px;--transition:.15s ease-in-out}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-stack);background-color:var(--color-bg);color:var(--color-text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}body{flex-direction:column;min-height:100vh;display:flex}a:focus-visible,button:focus-visible{outline:2px solid var(--color-accent);outline-offset:4px}.header{border-bottom:1px solid var(--color-border);align-items:center;height:72px;display:flex}.header-container{width:100%;max-width:var(--max-width);justify-content:space-between;align-items:center;margin:0 auto;padding:0 1.5rem;display:flex}.brand{color:var(--color-text-primary);letter-spacing:-.01em;align-items:center;gap:.625rem;font-size:1rem;font-weight:600;text-decoration:none;display:flex}.brand-logo{display:block}.nav-list{list-style:none}.nav-link{color:var(--color-text-secondary);transition:color var(--transition);font-size:.875rem;font-weight:500;text-decoration:none}.nav-link:hover{color:var(--color-accent)}.main-content{width:100%;max-width:var(--max-width);flex:1;align-items:center;margin:0 auto;padding:0 1.5rem;display:flex}.api-portal{width:100%;max-width:680px;padding-bottom:6rem}.domain-label{text-transform:uppercase;letter-spacing:.08em;color:var(--color-accent);margin-bottom:.75rem;font-size:.75rem;font-weight:600;display:inline-block}.main-title{letter-spacing:-.02em;color:var(--color-text-primary);margin-bottom:1rem;font-size:3rem;font-weight:600;line-height:1.15}.main-description{color:var(--color-text-secondary);margin-bottom:1.75rem;font-size:1.125rem;line-height:1.6}.main-actions{margin-bottom:1.25rem;display:flex}.btn{cursor:pointer;height:44px;transition:background-color var(--transition), transform .1s ease;border-radius:6px;justify-content:center;align-items:center;padding:0 1.25rem;font-size:.875rem;font-weight:600;text-decoration:none;display:inline-flex}.btn-primary{background-color:var(--color-accent);color:#fff;border:none}.btn-primary:hover{background-color:var(--color-accent-hover)}.btn-primary:active{transform:scale(.98)}.main-helper-text{color:var(--color-text-muted);font-size:.875rem}.footer{border-top:1px solid var(--color-border)}.footer-container{max-width:var(--max-width);color:var(--color-text-muted);justify-content:space-between;align-items:center;margin:0 auto;padding:1.5rem;font-size:.8125rem;display:flex}.footer-links{align-items:center;gap:.75rem;display:flex}.footer-link{color:var(--color-text-muted);transition:color var(--transition);text-decoration:none}.footer-link:hover{color:var(--color-text-secondary)}.footer-separator{color:#e2e8f0}@media (width<=600px){.header-container,.main-content{padding:0 1rem}.api-portal{padding-top:4rem;padding-bottom:4rem}.main-title{font-size:2.25rem}.main-description{font-size:1rem}.footer-container{padding:1.25rem 1rem}}