*{margin:0;padding:0;box-sizing:border-box;} body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;overflow-x:hidden;user-select:none;} .main-container{min-height:100vh;display:flex;flex-direction:column;transition:all 0.3s ease;} .header{background:rgba(255,255,255,0.1);backdrop-filter:blur(10px);padding:20px 0;box-shadow:0 2px 20px rgba(0,0,0,0.1);} .header-content{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;justify-content:space-between;align-items:center;} .logo{display:flex;align-items:center;gap:15px;} .logo-icon{width:50px;height:50px;background:linear-gradient(45deg,#f093fb 0%,#f5576c 100%);border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:24px;color:white;box-shadow:0 4px 15px rgba(0,0,0,0.2);} .logo-text{color:white;font-size:28px;font-weight:bold;text-shadow:2px 2px 4px rgba(0,0,0,0.2);} .user-info{display:flex;align-items:center;gap:15px;color:white;} .user-avatar{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.2);display:flex;align-items:center;justify-content:center;font-size:20px;} .content{flex:1;max-width:1200px;margin:0 auto;padding:40px 20px;width:100%;} .welcome-section{text-align:center;margin-bottom:50px;animation:fadeInUp 0.8s ease;} .welcome-title{color:white;font-size:36px;margin-bottom:15px;text-shadow:2px 2px 4px rgba(0,0,0,0.2);} .welcome-subtitle{color:rgba(255,255,255,0.9);font-size:18px;} .tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px;animation:fadeInUp 0.8s ease 0.2s both;} .tool-card{background:rgba(255,255,255,0.95);border-radius:20px;padding:30px;text-align:center;cursor:pointer;transition:all 0.3s ease;box-shadow:0 10px 30px rgba(0,0,0,0.1);position:relative;overflow:hidden;} .tool-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#667eea 0%,#764ba2 100%);transform:scaleX(0);transition:transform 0.3s ease;} .tool-card:hover{transform:translateY(-5px);box-shadow:0 15px 40px rgba(0,0,0,0.15);} .tool-card:hover::before{transform:scaleX(1);} .tool-icon{width:60px;height:60px;margin:0 auto 20px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:28px;color:white;transition:all 0.3s ease;} .tool-card:hover .tool-icon{transform:scale(1.1)rotate(5deg);} .tool-name{font-size:18px;font-weight:600;color:#333;margin-bottom:10px;} .tool-desc{font-size:14px;color:#666;line-height:1.5;} .content-loader{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:white;z-index:1000;overflow-y:auto;} .content-loader.active{display:block;animation:slideIn 0.3s ease;} .back-button{position:fixed;top:20px;left:20px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:white;border:none;padding:12px 24px;border-radius:25px;cursor:pointer;font-size:16px;display:flex;align-items:center;gap:8px;box-shadow:0 4px 15px rgba(0,0,0,0.2);transition:all 0.3s ease;z-index:1001;} .back-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,0.3);} @keyframes fadeInUp{from{opacity:0;transform:translateY(30px);} to{opacity:1;transform:translateY(0);} } @keyframes slideIn{from{transform:translateX(100%);} to{transform:translateX(0);} } #dev-toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background-color:#333;color:white;padding:16px 24px;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,0.15);z-index:9999;display:none;opacity:0;visibility:hidden;transition:opacity 0.3s ease-in-out,visibility 0.3s ease-in-out;} #dev-toast.show{display:block;opacity:1;visibility:visible;} #dev-toast.hide{display:none;opacity:0;visibility:hidden;} #dev-toast p{margin:0;font-size:16px;font-family:sans-serif;} @media (max-width:768px){.tools-grid{grid-template-columns:repeat(2,1fr);gap:15px;} .welcome-title{font-size:28px;} .header-content{padding:0 15px;} .logo-text{font-size:24px;} .tool-card{padding:20px;} } @media (max-width:480px){.tools-grid{grid-template-columns:repeat(2,1fr);gap:10px;} .tool-card{padding:15px;} .tool-icon{width:50px;height:50px;font-size:24px;} .tool-name{font-size:16px;} .tool-desc{font-size:12px;} } .version-info{position:fixed;bottom:20px;left:20px;text-align:left;padding:10px;color:#fff;font-size:14px;background-color:rgba(0,0,0,0.5);border-radius:4px;} .update-dialog{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.5);display:none;justify-content:center;align-items:center;z-index:2000;} .update-dialog.show{display:flex;opacity:1;visibility:visible;transition:opacity 0.3s ease,visibility 0.3s ease;} .dialog-content{background-color:#fff;border-radius:12px;padding:24px;max-width:400px;width:90%;box-shadow:0 8px 24px rgba(0,0,0,0.15);transform:scale(0.9);opacity:0;transition:transform 0.3s ease;} .update-dialog.show .dialog-content{transform:scale(1);opacity:1;} .dialog-title{font-size:20px;font-weight:bold;margin-bottom:16px;color:#333;} .dialog-message{margin-bottom:20px;color:#666;line-height:1.5;} .dialog-buttons{display:flex;justify-content:flex-end;gap:12px;} .dialog-button{padding:8px 16px;border:none;border-radius:6px;font-size:14px;cursor:pointer;transition:background-color 0.2s ease;} .dialog-button.primary{background-color:#4a6cf7;color:#fff;} .dialog-button.primary:hover{background-color:#3a5ce5;} .dialog-button.secondary{background-color:#f0f2ff;color:#4a6cf7;} .dialog-button.secondary:hover{background-color:#e0e2ff;}