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#0000001a;width:100%;max-width:400px}.login-title{text-align:center;margin-bottom:30px;color:#333;font-size:24px;font-weight:600}.phone-display{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:12px;background:#f7fafc;border-radius:6px;color:#555}.back-button{background:none;border:none;color:#667eea;cursor:pointer;font-size:14px;text-decoration:underline}.back-button:hover{color:#5a67d8}.resend-section{text-align:center;margin-bottom:20px}.resend-button{background:none;border:none;color:#667eea;cursor:pointer;font-size:14px;text-decoration:underline}.resend-button:hover:not(:disabled){color:#5a67d8}.login-type-switch{display:flex;margin-bottom:30px;border-radius:8px;overflow:hidden;border:2px solid #e2e8f0}.type-button{flex:1;padding:12px 16px;background:#fff;border:none;color:#666;font-size:14px;font-weight:500;cursor:pointer;transition:all 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solid #f7fafc}.video-preview{display:flex;gap:24px;align-items:flex-start}.video-cover{position:relative;flex-shrink:0;width:200px;height:300px;border-radius:12px;overflow:hidden;box-shadow:0 8px 20px #00000026}.video-cover img{width:100%;height:100%;object-fit:cover}.duration-badge{position:absolute;bottom:8px;right:8px;background:#000c;color:#fff;padding:4px 8px;border-radius:4px;font-size:.8rem;font-weight:500}.video-details{flex:1;display:flex;flex-direction:column;gap:12px}.video-title{font-size:1.5rem;font-weight:600;color:#2d3748;line-height:1.4;margin:0}.video-author{color:#667eea;font-weight:500;font-size:1rem}.video-desc{color:#718096;line-height:1.6;margin:8px 0}.video-actions{display:flex;gap:12px;margin-top:20px}.download-button{background:linear-gradient(45deg,#48bb78,#38a169);color:#fff;border:none;padding:12px 24px;font-size:1rem;font-weight:600;border-radius:12px;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px #48bb784d}.download-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 16px #48bb7866}.download-button:disabled{opacity:.6;cursor:not-allowed;transform:none}.clear-button{background:#f7fafc;color:#4a5568;border:2px solid #e2e8f0;padding:12px 24px;font-size:1rem;font-weight:500;border-radius:12px;cursor:pointer;transition:all .2s ease}.clear-button:hover{background:#edf2f7;border-color:#cbd5e0}.usage-tips{background:#f7fafc;border-radius:16px;padding:24px;border:1px solid #e2e8f0}.usage-tips h4{color:#2d3748;font-size:1.1rem;font-weight:600;margin-bottom:16px}.usage-tips ul{list-style:none;padding:0}.usage-tips li{color:#4a5568;line-height:1.8;position:relative;padding:4px 0 4px 20px}.usage-tips li:before{content:"•";color:#667eea;font-weight:700;position:absolute;left:0}@media(max-width:1024px){.douyin-downloader{padding:30px 15px}.video-cover{width:160px;height:240px}.video-preview{gap:20px}}@media(max-width:768px){.douyin-downloader{padding:20px 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h4{font-size:1rem}}.welcome-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.welcome-card{background:#fff;border-radius:12px;padding:40px;box-shadow:0 20px 40px #0000001a;width:100%;max-width:900px;text-align:center}.welcome-header h1{color:#333;font-size:28px;font-weight:600;margin-bottom:8px}.welcome-header p{color:#666;font-size:16px;margin-bottom:30px}.tab-navigation{display:flex;justify-content:center;margin-bottom:30px;border-bottom:1px solid #e2e8f0}.tab-button{padding:12px 24px;background:none;border:none;color:#666;font-size:16px;font-weight:500;cursor:pointer;border-bottom:2px solid transparent;transition:all .2s}.tab-button:hover{color:#667eea}.tab-button.active{color:#667eea;border-bottom-color:#667eea}.tab-content{min-height:400px}.profile-tab{display:flex;flex-direction:column;align-items:center}.user-info{display:flex;align-items:center;padding:20px;background:#f7fafc;border-radius:12px;margin-bottom:30px;text-align:left;width:100%;max-width:500px}.user-avatar{width:60px;height:60px;border-radius:50%;background:#667eea;color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:600;margin-right:20px;flex-shrink:0}.user-details h2{color:#333;font-size:20px;font-weight:600;margin:0 0 8px}.user-phone{color:#667eea;font-size:16px;font-weight:500;margin:0 0 4px}.user-id,.password-status{color:#666;font-size:14px;margin:0 0 4px}.password-status:has-text("已设置"){color:#48bb78}.join-date{color:#666;font-size:14px;margin:0}.profile-actions{display:flex;justify-content:center}.logout-button{padding:12px 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