:root{--accent: #14c4a0;--accent-ink: #079a84;--accent-tint: #e8f8f5;--ink: #101828;--ink-2: #1f2937;--muted: #667085;--faint: #98a2b3;--line: #e6eaf0;--surface: #ffffff;--ground: #fafbfc;--danger: #ef4444}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}body{background:var(--ground);color:var(--ink);font-family:IBM Plex Sans,-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;-webkit-font-smoothing:antialiased}.shell{display:flex;height:100%;flex-direction:column}.bar{display:flex;flex:0 0 auto;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:var(--surface);padding:0 16px;height:48px}.brand{display:flex;align-items:center;gap:8px;color:var(--ink);font-size:15px;font-weight:600}.brand svg{width:20px;height:20px;color:var(--accent-ink)}.frame{display:block;width:100%;flex:1 1 auto;border:0}.gate{display:flex;height:100%;align-items:center;justify-content:center;padding:24px}.card{display:flex;width:100%;max-width:380px;flex-direction:column;gap:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:40px 32px;text-align:center}.mark{display:flex;align-self:center;width:48px;height:48px;align-items:center;justify-content:center;border-radius:14px;background:var(--accent-tint);color:var(--accent-ink)}h1{font-size:20px;font-weight:600;letter-spacing:-.01em;color:var(--ink)}.sub{font-size:14px;line-height:1.6;color:var(--muted)}button{border:0;border-radius:10px;background:var(--accent);padding:12px 20px;color:#fff;cursor:pointer;font:inherit;font-size:15px;font-weight:500;transition:background .15s}button:hover:not(:disabled){background:var(--accent-ink)}button:disabled{cursor:default;opacity:.55}button.quiet{background:transparent;color:var(--muted);font-size:13px}button.quiet:hover:not(:disabled){background:transparent;color:var(--ink-2)}.err{border-radius:10px;background:#fef2f2;padding:12px 14px;color:var(--danger);font-size:13px;line-height:1.5;text-align:left}.busy{display:flex;height:100%;align-items:center;justify-content:center;gap:10px;color:var(--muted);font-size:14px}.spinner{width:16px;height:16px;border:2px solid var(--line);border-radius:50%;border-top-color:var(--accent);animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.spinner{animation-duration:2s}}