@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--primary: #4F46E5;--primary-hover: #4338ca;--bg-color: #F3F4F6;--card-bg: #FFFFFF;--text-main: #111827;--text-muted: #6B7280;--border-light: #E5E7EB;--border-focus: #4F46E5;--bg-answer: #F8FAFC;--border-answer: #E2E8F0;--success: #10B981;--error: #EF4444}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.5;min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px}.page-wrapper{width:100%;max-width:1100px;display:grid;grid-template-columns:1.5fr 1fr;gap:24px;margin:0 auto}.app-container{background:var(--card-bg);width:100%;border-radius:16px;box-shadow:0 10px 25px -5px #0000000d,0 8px 10px -6px #00000003;padding:32px;display:flex;flex-direction:column;gap:32px}.history-panel{background:var(--card-bg);border-radius:16px;box-shadow:0 10px 25px -5px #0000000d;padding:24px;display:flex;flex-direction:column;gap:16px;max-height:calc(100vh - 40px);overflow-y:auto}.history-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-light);padding-bottom:12px}.history-title{font-weight:600;display:flex;align-items:center;gap:8px;font-size:1.05rem;color:var(--text-main)}.clear-btn{background:none;border:none;color:var(--text-muted);font-size:.85rem;cursor:pointer;transition:color .2s;padding:4px}.clear-btn:hover{color:var(--error)}.history-list{display:flex;flex-direction:column;gap:12px}.history-item{background:var(--bg-answer);border:1px solid var(--border-answer);border-radius:8px;padding:12px;cursor:pointer;transition:all .2s}.history-item:hover{border-color:var(--primary);box-shadow:0 2px 8px #4f46e51a}.history-q{font-weight:600;font-size:.9rem;margin-bottom:6px;color:var(--text-main);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.history-a{font-size:.85rem;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.empty-history{text-align:center;color:var(--text-muted);font-size:.9rem;padding:32px 0;font-style:italic}.app-header{text-align:center;border-bottom:1px solid var(--border-light);padding-bottom:24px}.app-title{display:flex;align-items:center;justify-content:center;gap:12px;font-size:1.6rem;font-weight:700;color:var(--text-main);margin-bottom:6px}.text-primary{color:var(--primary)}.app-subtitle{font-size:.9rem;color:var(--text-muted)}.section{display:flex;flex-direction:column;gap:16px}.section-title{font-size:1.05rem;font-weight:600;color:var(--text-main);display:flex;align-items:center;gap:8px}.upload-area{display:flex;flex-direction:column;align-items:center;padding:24px;border:2px dashed var(--border-light);border-radius:12px;background-color:#f9fafb;transition:all .2s ease;cursor:pointer}.upload-area:hover,.upload-area.active{border-color:var(--primary);background-color:#eef2ff}.upload-area input{display:none}.upload-icon{color:var(--primary);margin-bottom:12px}.upload-text{font-size:.95rem;font-weight:500;color:var(--text-main);margin-bottom:4px}.upload-hint{font-size:.8rem;color:var(--text-muted)}.file-info{display:flex;align-items:center;justify-content:space-between;background:var(--bg-answer);padding:12px 16px;border-radius:8px;border:1px solid var(--border-answer);font-size:.9rem;font-weight:500;flex-wrap:wrap;gap:12px}.file-name-group{display:flex;align-items:center;gap:8px;word-break:break-all}.input-group{display:flex;flex-direction:column;gap:12px}.input-wrapper{position:relative;display:flex;align-items:center;width:100%}.text-input{width:100%;padding:14px 44px 14px 16px;border:1px solid var(--border-light);border-radius:8px;font-size:1rem;font-family:inherit;transition:border-color .2s,box-shadow .2s;outline:none}.input-clear-btn{position:absolute;right:12px;background:none;border:none;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:4px;border-radius:50%;transition:all .2s}.input-clear-btn:hover{color:var(--text-main);background-color:var(--bg-color)}.text-input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px #4f46e526}.btn{display:flex;align-items:center;justify-content:center;gap:8px;background-color:var(--primary);color:#fff;font-weight:500;font-size:1rem;padding:12px 24px;border-radius:8px;border:none;cursor:pointer;transition:all .2s;font-family:inherit}.btn:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-1px)}.btn:disabled{background-color:#9ca3af;cursor:not-allowed;opacity:.8;transform:none}.answer-container{background:var(--bg-answer);border:1px solid var(--border-answer);border-radius:12px;padding:24px;animation:fadeIn .4s ease-out}.answer-header{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--primary);margin-bottom:12px;font-size:.95rem}.answer-text{color:var(--text-main);line-height:1.6;white-space:pre-wrap;font-size:.95rem}.status-message{font-size:.875rem;display:flex;align-items:center;gap:6px;margin-top:8px}.status-success{color:var(--success)}.status-error{color:var(--error)}@keyframes fadeIn{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}.spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 900px){.page-wrapper{grid-template-columns:1fr}}@media (max-width: 600px){.app-container{padding:24px 20px;border-radius:0}.page-wrapper{width:100vw;margin:0;gap:0}.history-panel{border-radius:0}body{padding:0;align-items:flex-start}}