*{margin:0;padding:0}html,body{height:100%}body{overflow:hidden}.loading-overlay{position:fixed;left:0;top:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;background:#222;color:#fff;z-index:9999;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}.loading-content{display:flex;flex-direction:column;align-items:center;gap:12px}.loading-spinner{width:40px;height:40px;border:4px solid rgba(255,255,255,.2);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.onboarding-overlay{position:fixed;left:0;top:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;background:#000000bf;z-index:10000;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}.onboarding-card{background:#fff;color:#222;border-radius:16px;padding:40px 48px;max-width:480px;width:90%;box-shadow:0 8px 32px #0000004d}.onboarding-card h1{font-size:1.5rem;margin-bottom:16px}.onboarding-card h2{font-size:1.1rem;margin-top:20px;margin-bottom:8px}.onboarding-card p{line-height:1.6;margin-bottom:8px}.onboarding-card ul{padding-left:20px;margin-bottom:8px}.onboarding-card li{line-height:1.6;margin-bottom:4px}.onboarding-dismiss{display:block;margin-top:24px;width:100%;padding:12px;border:none;border-radius:8px;background:#333;color:#fff;font-size:1rem;cursor:pointer}.onboarding-dismiss:hover{background:#555}.app-header{position:fixed;top:16px;left:20px;z-index:9998;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji;display:flex;align-items:center;gap:8px;pointer-events:none;-webkit-user-select:none;user-select:none}.app-header-logo{font-size:1.6rem;line-height:1}.app-header-title{font-size:1.25rem;font-weight:700;color:#3a3a3a;letter-spacing:.02em}.toolbar{position:fixed;top:16px;right:16px;display:flex;gap:8px;z-index:9998}.help-button,.settings-button{width:44px;height:44px;border:none;border-radius:50%;background:#ffffffd9;color:#333;font-size:1.4rem;font-weight:700;cursor:pointer;box-shadow:0 2px 8px #0003;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji;display:flex;align-items:center;justify-content:center}.settings-button{font-size:1.6rem}.help-button:hover,.settings-button:hover{background:#fff}.settings-overlay{position:fixed;left:0;top:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;background:#00000080;z-index:10000;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}.settings-modal{background:#fff;color:#222;border-radius:16px;padding:0;max-width:420px;width:90%;box-shadow:0 8px 32px #0000004d;overflow:hidden}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px 0}.settings-header h1{font-size:1.3rem}.settings-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:#666;padding:0 4px}.settings-close:hover{color:#000}.settings-body{padding:16px 24px 24px}.settings-section{margin-bottom:20px}.settings-section:last-child{margin-bottom:0}.settings-section h2{font-size:1rem;margin-bottom:4px}.settings-section p{font-size:.9rem;color:#555;margin-bottom:10px;line-height:1.4}.settings-reset-positions,.settings-show-onboarding{display:block;width:100%;padding:10px;border:1px solid #ddd;border-radius:8px;background:#f5f5f5;color:#222;font-size:.9rem;cursor:pointer}.settings-reset-positions:hover,.settings-show-onboarding:hover{background:#eaeaea}.settings-confirm{background:#f9f9f9;border:1px solid #ddd;border-radius:8px;padding:16px;margin-top:12px}.settings-confirm p{margin-bottom:8px;font-size:.9rem;color:#222}.settings-confirm-actions{display:flex;gap:8px;margin-top:12px}.settings-confirm-cancel,.settings-confirm-ok{flex:1;padding:8px;border:none;border-radius:6px;font-size:.85rem;cursor:pointer}.settings-confirm-cancel{background:#e0e0e0;color:#333}.settings-confirm-cancel:hover{background:#d0d0d0}.settings-confirm-ok{background:#c0392b;color:#fff}.settings-confirm-ok:hover{background:#a93226}