* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            background: linear-gradient(135deg, #ffe6eb 0%, #ffd1e0 100%);
            min-height: 100vh;
            padding: 20px;
            overflow-x: hidden;
            position: relative;
        }
        
        /* 背景效果 */
        .sakura-background {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            opacity: 0.6;
        }
        
        /* 主容器样式 */
        .container {
            max-width: 800px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.92);
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 15px 35px rgba(233, 30, 99, 0.18);
            position: relative;
            z-index: 1;
            backdrop-filter: blur(5px);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }
        
        /* 标题样式 */
        h1 {
            text-align: center;
            color: #e91e63;
            font-size: 2.6rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
            font-family: '楷体', cursive;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 15px;
        }
        
        h1::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 150px;
            height: 4px;
            background: linear-gradient(to right, transparent, #ff80ab, transparent);
            border-radius: 2px;
        }
        
        /* 说明区域 */
        .instructions {
            background: #fff9fb;
            border-radius: 15px;
            padding: 15px 20px;
            margin-bottom: 25px;
            border-left: 4px solid #ff80ab;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
        }
        
        .instructions h3 {
            color: #e91e63;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .instructions p {
            color: #7a4a58;
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 5px;
        }
        
        .instructions ul {
            padding-left: 20px;
            margin: 10px 0;
        }
        
        .instructions li {
            margin-bottom: 8px;
            color: #7a4a58;
            font-size: 0.9rem;
        }
        
        .instructions .example {
            background: #fff0f5;
            padding: 10px 15px;
            border-radius: 10px;
            font-size: 0.9rem;
            margin-top: 10px;
            color: #e91e63;
            font-weight: 500;
        }
        
        /* 输入区域样式 */
        .input-group {
            display: flex;
            gap: 10px;
            margin-bottom: 25px;
            position: relative;
        }
        
        #teacherInput {
            flex: 1;
            padding: 16px 22px;
            border: 2px solid #ff80ab;
            border-radius: 30px;
            font-size: 16px;
            background: rgba(255, 255, 255, 0.95);
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
            font-family: inherit;
            color: #5a3a44;
        }
        
        #teacherInput:focus {
            outline: none;
            border-color: #ff4081;
            box-shadow: 0 0 0 4px rgba(255, 64, 129, 0.25);
        }
        
        #teacherInput::placeholder {
            color: #c1a4b1;
        }
        
        button {
            padding: 14px 32px;
            background: linear-gradient(135deg, #ff4081 0%, #f50057 100%);
            border: none;
            border-radius: 30px;
            color: white;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 5px 18px rgba(255, 64, 129, 0.35);
            letter-spacing: 1px;
            font-size: 16px;
            font-family: inherit;
        }
        
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 22px rgba(255, 64, 129, 0.45);
        }
        
        button:active {
            transform: translateY(1px);
            box-shadow: 0 2px 12px rgba(255, 64, 129, 0.3);
        }
        
        /* 教师列表区域样式 */
        .list-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            padding: 0 5px;
        }
        
        .list-title {
            font-size: 1.3rem;
            color: #e91e63;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .count {
            background: linear-gradient(135deg, #ff80ab 0%, #ff4081 100%);
            color: white;
            border-radius: 15px;
            padding: 4px 14px;
            font-size: 1rem;
            box-shadow: 0 3px 8px rgba(233, 30, 99, 0.2);
        }
        
        .teacher-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            min-height: 150px;
            background: rgba(255, 255, 255, 0.5);
            border-radius: 15px;
            padding: 25px;
            border: 2px dashed #ffc2d6;
            transition: all 0.3s;
        }
        
        .teacher-list.empty {
            align-items: center;
            justify-content: center;
            color: #c1a4b1;
            font-style: italic;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path fill="none" stroke="%23ffc2d6" stroke-width="2" d="M30,30 L70,70 M70,30 L30,70"></path></svg>');
            background-repeat: no-repeat;
            background-position: center;
            background-size: 60px;
        }
        
        /* 教师名单项样式 */
        .teacher-item {
            position: relative;
            background: linear-gradient(135deg, #ffffff 0%, #fff9fb 100%);
            padding: 14px 45px 14px 22px;
            border-radius: 30px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
            cursor: pointer;
            transition: all 0.3s;
            overflow: hidden;
            font-weight: 500;
            color: #e91e63;
            border: 1px solid #ffd9e4;
            animation: fadeIn 0.4s ease-out;
            display: flex;
            align-items: center;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .teacher-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
            background: linear-gradient(135deg, #ffffff 0%, #fff0f5 100%);
        }
        
        .teacher-item::after {
            content: "✓";
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
            width: 28px;
            height: 28px;
            background: #ff80ab;
            border-radius: 50%;
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            opacity: 0.7;
            transition: all 0.3s;
        }
        
        .teacher-item:hover::after {
            opacity: 1;
            background: #ff4081;
        }
        
        .teacher-item.signed {
            opacity: 0.5;
            transform: scale(0.95);
            background: #f8f8f8;
            text-decoration: line-through;
            color: #b8b8b8;
        }
        
        .teacher-item.signed::after {
            content: "✓";
            background: #a1d8a1;
            color: white;
            opacity: 1;
        }
        
        /* 飘落动画效果 */
        .sakura {
            position: absolute;
            width: 40px;
            height: 40px;
            background: url('data:image/png;base64,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') no-repeat center/contain;
            animation: sakuraFall 2s ease-out forwards;
            pointer-events: none;
            z-index: 2;
        }
        
        @keyframes sakuraFall {
            0% { transform: translateY(0) translateX(0) rotate(0deg); opacity: 1; filter: blur(0); }
            70% { opacity: 0.8; }
            100% { transform: translateY(120px) translateX(40px) rotate(400deg); opacity: 0; filter: blur(2px); }
        }
        
        /* 控制按钮区域 */
        .controls {
            display: flex;
            gap: 15px;
            margin-top: 25px;
            justify-content: center;
        }
        
        .controls button {
            padding: 12px 25px;
            border-radius: 25px;
            font-size: 15px;
            background: #fff;
            color: #ff4081;
            border: 1px solid #ff80ab;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
            transition: all 0.2s;
        }
        
        .controls button:hover {
            background: #fff0f5;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
        }
        
        .controls button:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .container {
                padding: 20px;
            }
            
            h1 {
                font-size: 2rem;
                padding-bottom: 10px;
            }
            
            .input-group {
                flex-direction: column;
            }
            
            button {
                width: 100%;
                padding: 16px;
                margin-top: 10px;
            }
            
            .teacher-item {
                width: calc(50% - 10px);
                padding: 12px 40px 12px 18px;
                font-size: 15px;
            }
            
            .controls {
                flex-wrap: wrap;
            }
            
            .instructions {
                padding: 12px 15px;
            }
        }
        
        @media (max-width: 480px) {
            .teacher-item {
                width: 100%;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            .list-title {
                font-size: 1.1rem;
            }
            
            .controls button {
                padding: 12px 18px;
                font-size: 14px;
            }
        }
        
        /* 页脚样式 */
        .footer {
            text-align: center;
            margin-top: 25px;
            color: #7a4a58;
            font-size: 0.9rem;
            opacity: 0.8;
        }