:root{--bg: #f4f6fb;--surface: #ffffff;--border: #e2e8f0;--text: #0f172a;--muted: #64748b;--primary: #1e3a8a;--primary-hover: #1d4ed8;--success: #047857;--success-bg: #ecfdf5;--warn: #b45309;--warn-bg: #fffbeb;--danger: #b91c1c;--danger-bg: #fef2f2;--radius: 14px;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06)}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}code{font-family:JetBrains Mono,Cascadia Mono,Consolas,monospace;font-size:.86em;background:#0f172a0f;padding:.1em .4em;border-radius:5px;word-break:break-all}.app{min-height:100vh;display:flex;flex-direction:column}.container{width:100%;max-width:1120px;margin:0 auto;padding:0 20px}.main-area{flex:1;padding-top:32px;padding-bottom:72px}.site-header{background:var(--surface);border-bottom:1px solid 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ease}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-ghost{background:var(--surface);border-color:var(--border);color:var(--text)}.btn-ghost:hover:not(:disabled){border-color:#cbd5e1;background:var(--bg)}.btn-block{width:100%;margin-top:6px}.btn-sm{padding:6px 12px;font-size:13px}.link-danger{background:none;border:none;color:var(--danger);font-size:13px;font-family:inherit;cursor:pointer;padding:0;text-decoration:underline}.alert{border-radius:10px;padding:14px 16px;margin-top:16px;font-size:14px;border:1px solid transparent}.alert p{margin:6px 0 0}.alert-error{background:var(--danger-bg);border-color:#fecaca;color:var(--danger)}.alert-warn{background:var(--warn-bg);border-color:#fde68a;color:var(--warn)}.alert 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var(--border);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow)}.qr-image{display:block;width:250px;height:250px;object-fit:contain}.countdown{margin-top:14px;font-weight:600;font-size:14px;color:var(--warn)}.countdown-done{color:var(--danger)}.polling-note{margin-top:10px;margin-bottom:0}.sim-card{border-color:#bfdbfe;background:#f8fbff}.copy-field{margin:14px 0;text-align:left}.copy-row{display:flex;align-items:center;gap:8px;margin-top:5px}.copy-row code{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:11.5px;line-height:1.4;max-height:62px;overflow:auto}.center-card{text-align:center;padding:56px 24px;max-width:420px;margin:40px auto}.spinner{width:34px;height:34px;margin:0 auto 16px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.success-card{max-width:520px;margin:24px 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