.core-principles-colored {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin: 30px 0;
}

.principle-card {
    flex: 1;
    min-width: 200px;
    max-width: 250px;
    padding: 25px 20px;
    border-radius: 0;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    color: white;
    border: none;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, #00629B 0%, #003C6B 100%);
}

/* 卡片主题色配置 - IEEE style */
.principle-card[data-theme="integrity"] {
    background: linear-gradient(135deg, #007CBA 0%, #005F8F 100%);
}

.principle-card[data-theme="fairness"] {
    background: linear-gradient(135deg, #00A08F 0%, #007A6F 100%);
}

.principle-card[data-theme="innovation"] {
    background: linear-gradient(135deg, #D36A00 0%, #A85500 100%);
}

.principle-card[data-theme="rigor"] {
    background: linear-gradient(135deg, #008C45 0%, #006A35 100%);
}

/* 悬停效果 */
.principle-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.2);
}

/* 内容样式 */
.card-icon {
    font-size: 2.8rem;
    margin-bottom: 15px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    display: block;
}

.card-title {
    font-size: 1.3rem;
    margin: 0 0 12px 0;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-desc {
    font-size: 1rem;
    line-height: 1.6;
    margin: 0;
    opacity: 0.95;
}

.card-desc span {
    display: inline-block;
    margin-top: 8px;
    font-weight: normal;
    letter-spacing: 0.5px;
}

/* 移动端适配 */
@media (max-width: 600px) {
    .principle-card {
        min-width: 100%;
        margin-bottom: 20px;
        padding: 20px 15px;
    }
}

.warning-badge {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: #FF6B00;
    /* IEEE orange */
    border-radius: 0;
    /* Square for IEEE style */
    text-align: center;
    line-height: 40px;
    font-size: 20px;
    font-weight: bold;
    color: white;
    box-shadow: 0 0 10px rgba(211, 106, 0, 0.5);
    cursor: pointer;
    position: relative;
    vertical-align: middle;
    margin: 10px 5px;
}

/* 可选的内光效果 */
.warning-badge::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border: 2px solid #FF6B00;
    border-radius: 0;
    opacity: 0.3;
}

.cta-buttonreport {
    display: inline-block;
    background-color: #8B0000;
    color: white;
    padding: 12px 25px;
    border-radius: 0;
    text-decoration: none;
    font-weight: bold;
    margin: 10px 5px;
    transition: all 0.3s;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    font-family: 'Arial', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-buttonreport:hover {
    background-color: #6B0000;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

/* 标签页样式 */
.research-tabs {
    margin-top: 20px;
}

.tab-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 15px;
}

.tab-button {
    padding: 10px 15px;
    background-color: #e0e0e0;
    border: none;
    border-radius: 0;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    color: #333;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.tab-button:hover {
    background-color: #d0d0d0;
}

.tab-button.active {
    background-color: #00629B;
    color: white;
}

.tab-content {
    display: none;
    padding: 20px;
    background-color: #f9f9f9;
    border-left: 3px solid #00629B;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.tab-content.active {
    display: block;
}

.tab-content h3 {
    margin-top: 0;
    color: #00629B;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
}

.tab-content ul {
    padding-left: 20px;
}

.tab-content li {
    margin-bottom: 8px;
}

@media (max-width: 768px) {
    .tab-buttons {
        flex-direction: column;
    }
    
    .tab-button {
        width: 100%;
    }
}

/* 投稿表单样式 */
.submission-form {
    max-width: 800px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #003C6B;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 0;
    font-size: 16px;
    font-family: 'Arial', sans-serif;
    box-sizing: border-box;
    background-color: #f9f9f9;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: #00629B;
    box-shadow: 0 0 5px rgba(0, 98, 155, 0.3);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    background-color: #f9f9f9;
}

.form-actions {
    margin: 20px 0;
    text-align: center;
}

.form-note {
    margin-top: 25px;
    padding: 15px;
    background-color: #f9f9f9;
    border-left: 4px solid #D36A00;
}

.form-note p {
    margin: 5px 0;
}