:root{--color-bg:#f5f5f5;--color-surface:#fff;--color-primary:#4a90d9;--color-primary-light:#e8f0fe;--color-text:#1a1a1a;--color-text-secondary:#666;--color-text-muted:#999;--color-border:#e0e0e0;--color-success:#4caf50;--color-warning:#ff9800;--color-danger:#f44336;--color-highlight:#fff3cd;--header-height:52px;--bottom-nav-height:56px;--radius:8px;--shadow:0 1px 3px #00000014}@media (prefers-color-scheme:dark){:root{--color-bg:#121212;--color-surface:#1e1e1e;--color-primary:#6db3f8;--color-primary-light:#1a2a3a;--color-text:#e0e0e0;--color-text-secondary:#aaa;--color-text-muted:#777;--color-border:#333;--color-highlight:#3a3520;--shadow:0 1px 3px #0000004d}}*{box-sizing:border-box;margin:0;padding:0}html,body{color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.5}#app{flex-direction:column;min-height:100vh;display:flex}.main-content{padding:12px;padding-bottom:calc(var(--bottom-nav-height) + 20px);flex:1;width:100%;max-width:720px;margin:0 auto}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}.text-center{text-align:center}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.text-muted{color:var(--color-text-muted)}.text-secondary{color:var(--color-text-secondary)}.text-primary{color:var(--color-primary)}.font-bold{font-weight:600}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}.w-full{width:100%}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.hidden{display:none!important}.btn{border-radius:var(--radius);cursor:pointer;touch-action:manipulation;border:none;justify-content:center;align-items:center;gap:6px;min-height:44px;padding:10px 20px;font-size:.9rem;font-weight:500;transition:opacity .15s;display:inline-flex}.btn:active{opacity:.7}.btn-primary{background:var(--color-primary);color:#fff}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn-danger{background:var(--color-danger);color:#fff}.btn-sm{min-height:36px;padding:6px 12px;font-size:.8rem}.btn:disabled{opacity:.5;cursor:not-allowed}.input{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);width:100%;color:var(--color-text);min-height:44px;padding:10px 14px;font-size:1rem}.input:focus{border-color:var(--color-primary);outline:none}.card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px}.select{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);width:100%;color:var(--color-text);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 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.15s;display:flex}.nav-item.active[data-v-53a228cd]{color:var(--color-primary)}.nav-icon[data-v-53a228cd]{font-size:1.3rem}.nav-label[data-v-53a228cd]{font-weight:500}.search-bar[data-v-d1f7732a]{align-items:center;display:flex;position:relative}.search-icon[data-v-d1f7732a]{pointer-events:none;font-size:1rem;position:absolute;left:12px}.search-input[data-v-d1f7732a]{border:1px solid var(--color-border);background:var(--color-surface);width:100%;color:var(--color-text);border-radius:24px;padding:12px 40px;font-size:1rem;transition:border-color .15s}.search-input[data-v-d1f7732a]:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light);outline:none}.clear-btn[data-v-d1f7732a]{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:1.1rem;position:absolute;right:8px}.searching-indicator[data-v-d1f7732a]{color:var(--color-text-muted);animation:1s infinite pulse-d1f7732a;position:absolute;right:12px}@keyframes pulse-d1f7732a{0%,to{opacity:.3}50%{opacity:1}}.result-card[data-v-ea2b0138]{cursor:pointer;transition:box-shadow .15s}.result-card[data-v-ea2b0138]:active{box-shadow:0 2px 8px #0000001f}.question-text[data-v-ea2b0138]{margin-bottom:6px;font-weight:500;line-height:1.5}.question-text[data-v-ea2b0138] mark{background:var(--color-highlight);border-radius:2px;padding:0 2px}.options-section[data-v-ea2b0138]{margin-top:4px;padding-left:4px}.option-item[data-v-ea2b0138]{color:var(--color-text-secondary);padding:1px 0;font-size:.9rem;line-height:1.6}.option-correct[data-v-ea2b0138]{color:var(--color-success);font-weight:600}.answer-label[data-v-ea2b0138]{color:var(--color-text-muted);margin-top:8px;margin-bottom:4px;font-size:.8rem}.answer-text[data-v-ea2b0138]{color:var(--color-success);font-weight:500;line-height:1.5}.answer-text[data-v-ea2b0138] mark{background:var(--color-highlight);border-radius:2px;padding:0 2px}.answer-preview[data-v-ea2b0138]{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.tags[data-v-ea2b0138]{flex-wrap:wrap;gap:4px;display:flex}.expand-hint[data-v-ea2b0138]{margin-top:6px}.page-title[data-v-baa86280]{font-size:1.4rem;font-weight:700}.results-list[data-v-baa86280]{flex-direction:column;gap:8px;display:flex}.page-title[data-v-b8ab4f51]{font-size:1.4rem;font-weight:700}.bank-list[data-v-b8ab4f51]{flex-direction:column;gap:8px;display:flex}.page-title[data-v-c7370a5d]{font-size:1.4rem;font-weight:700}.upload-area[data-v-c7370a5d]{border:2px dashed var(--color-border);border-radius:var(--radius);cursor:pointer;flex-direction:column;align-items:center;padding:40px 20px;transition:border-color .15s;display:flex}.upload-area[data-v-c7370a5d]:hover{border-color:var(--color-primary)}.upload-icon[data-v-c7370a5d]{margin-bottom:8px;font-size:2.5rem}.field-label[data-v-c7370a5d]{color:var(--color-text-secondary);margin-bottom:4px;font-size:.85rem;font-weight:500;display:block}.preview-list[data-v-c7370a5d]{flex-direction:column;gap:6px;display:flex}.preview-item[data-v-c7370a5d]{background:var(--color-bg);border-radius:6px;padding:8px}.spinner-large[data-v-c7370a5d]{border:4px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;width:40px;height:40px;margin:0 auto 16px;animation:.8s linear infinite spin-c7370a5d}@keyframes spin-c7370a5d{to{transform:rotate(360deg)}}.success-icon[data-v-c7370a5d]{font-size:3rem}.error-state .icon[data-v-c7370a5d]{margin-bottom:8px;font-size:3rem}.page-title[data-v-198c8d59]{font-size:1.4rem;font-weight:700}.help-list[data-v-198c8d59]{flex-direction:column;gap:6px;padding-left:20px;display:flex}.help-list li[data-v-198c8d59]{font-size:.9rem;line-height:1.6}h2[data-v-198c8d59]{font-size:1.1rem}.loading-screen[data-v-aa92c68f]{height:100vh;color:var(--color-text-muted);flex-direction:column;justify-content:center;align-items:center;gap:16px;display:flex}.spinner[data-v-aa92c68f]{border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;width:32px;height:32px;animation:.8s linear infinite spin-aa92c68f}@keyframes spin-aa92c68f{to{transform:rotate(360deg)}}