:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:#e2e8f0;background-color:#0f172a;--accent: #3b82f6;--accent-hover: #2563eb;--bg-card: #1e293b;--border: #334155;--text-muted: #94a3b8}*{box-sizing:border-box}body{margin:0;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;font-size:16px}.app-shell{max-width:900px;margin:0 auto;padding:48px 24px}.topbar{display:flex;align-items:baseline;justify-content:space-between;gap:24px;padding-bottom:24px;border-bottom:1px solid var(--border);margin-bottom:48px}.topbar h1{margin:0;font-size:1.75rem;font-weight:700;color:#f8fafc;letter-spacing:-.025em}.topbar nav{display:flex;gap:16px}.topbar a{color:var(--text-muted);text-decoration:none;font-weight:500;transition:color .15s ease}.topbar a:hover{color:#f8fafc}.content{margin-top:24px}h2,h3,h4{color:#f8fafc;line-height:1.3;margin-top:0;margin-bottom:16px;font-weight:600;letter-spacing:-.015em}h2{font-size:1.5rem}h3{font-size:1.25rem}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:32px;margin-bottom:24px}.stack{display:flex;flex-direction:column;gap:20px}label{display:flex;flex-direction:column;gap:8px;font-weight:500;color:#e2e8f0}input,select,button{border-radius:6px;border:1px solid var(--border);padding:10px 16px;font-family:inherit;font-size:1rem;background:#0f172a;color:#fff;transition:border-color .15s ease;line-height:1.5}input::placeholder{color:#64748b}input:focus,select:focus{outline:none;border-color:var(--accent)}button{background:var(--accent);border:1px solid transparent;font-weight:600;color:#fff;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;font-size:1rem}button.button-primary{width:100%;padding:16px 20px;font-size:1.1rem;background:var(--accent);box-shadow:0 4px 14px -4px #3b82f666}button.button-primary:hover:not(:disabled){background:var(--accent-hover);box-shadow:0 6px 20px -4px #3b82f680}button.button-secondary,.button-secondary{display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;border-radius:6px;background:#1e293b;color:#cad5e2;text-decoration:none;font-weight:500;border:1px solid var(--border)}button.button-secondary:hover:not(:disabled),.button-secondary:hover{background:#334155;color:#f8fafc}button.button-danger{background:transparent;border:1px solid #7f1d1d;color:#fca5a5}button.button-danger:hover:not(:disabled){background:#450a0a}button:hover:not(:disabled):not(.button-secondary):not(.button-danger){background:var(--accent-hover)}button:disabled,.button-secondary:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.copy-btn{background:transparent!important;color:var(--text-muted)!important;border:1px solid transparent!important}.copy-btn:not(.copied):hover:not(:disabled){background:transparent!important;border-color:var(--border)!important;color:#f8fafc!important}.copy-btn.copied{background:transparent!important;border-color:#10b981!important;color:#10b981!important}.error{color:#fca5a5;font-size:.95rem;margin:0}.error-box{border:1px solid #7f1d1d;background:#450a0a;color:#fca5a5;border-radius:6px;padding:16px;font-size:.95rem}.success-text{color:#6ee7b7;font-size:.95rem}.success{border:1px solid #14532d;background:#064e3b;color:#6ee7b7;border-radius:6px;padding:16px;font-size:.95rem}.notice{margin-top:32px;border-top:1px solid var(--border);padding-top:24px}.subtle{color:var(--text-muted);font-size:.9rem}.row{display:flex;flex-wrap:wrap;gap:16px;align-items:center}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#0b1120;border:1px solid var(--border);border-radius:6px;padding:16px;font-size:.875rem;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;color:#cbd5e1;margin:0}@media (max-width: 720px){.app-shell{padding:32px 16px}.topbar{flex-direction:column;align-items:flex-start;gap:16px}}