:root{--bg:#101418;--panel:#1a2027;--text:#e8edf2;--muted:#8b98a5;--accent:#4cc2ff;--mono:ui-monospace,"SF Mono","Cascadia Mono",Menlo,monospace}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.6}.wrap{max-width:640px;margin:0 auto;padding:96px 24px}.eyebrow{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.08em;margin:0 0 8px}h1{font-size:44px;letter-spacing:-.02em;margin:0 0 12px}.sub{color:var(--muted);margin:0 0 32px}button{background:var(--accent);color:#06202e;border:none;border-radius:8px;padding:12px 20px;font-size:15px;font-weight:600;cursor:pointer}button:disabled{opacity:.6;cursor:wait}button:focus-visible{outline:2px solid var(--text);outline-offset:2px}.result{margin-top:24px;background:var(--panel);border:1px solid #2a333d;border-radius:8px;padding:16px;font-family:var(--mono);font-size:13px;overflow-x:auto}