* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}

h1 {
    color: #2c3e50;
    font-size: 3em;
    margin-bottom: 10px;
    font-weight: 300;
}

.subtitle {
    color: #7f8c8d;
    font-size: 1.3em;
    font-style: italic;
}

section {
    background: rgba(255, 255, 255, 0.95);
    margin-bottom: 30px;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}

h2 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5em;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.stat-value {
    font-size: 2.5em;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1.1em;
    opacity: 0.9;
}

.keywords-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.keyword-tag {
    background: #e74c3c;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9em;
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.3);
}

.articles-list {
    display: grid;
    gap: 15px;
}

.article-item {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-left: 4px solid #3498db;
    transition: transform 0.2s ease;
}

.article-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.article-title {
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1em;
}

.article-meta {
    color: #7f8c8d;
    font-size: 0.9em;
    margin-bottom: 5px;
}

.article-keywords {
    margin-top: 8px;
}

.keyword-small {
    display: inline-block;
    background: #ecf0f1;
    color: #34495e;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    margin-right: 5px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #7f8c8d;
    font-size: 1.1em;
}

footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 2em;
    }
    
    section {
        padding: 20px;
    }
}
/* ==================== 新增的可视化样式 ==================== */

.charts {
    margin-bottom: 30px;
}

.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.chart-wrapper {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    height: 300px;
}

.signal-strength {
    margin-bottom: 30px;
}

.signals-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
}

.signal-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-left: 4px solid #e74c3c;
}

.signal-strong {
    border-left-color: #e74c3c;
    background: linear-gradient(135deg, #fff, #ffeaea);
}

.signal-medium {
    border-left-color: #f39c12;
    background: linear-gradient(135deg, #fff, #fff4e3);
}

.signal-weak {
    border-left-color: #3498db;
    background: linear-gradient(135deg, #fff, #e8f4fd);
}

.signal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.signal-title {
    font-weight: bold;
    color: #2c3e50;
    flex-grow: 1;
}

.signal-strength-badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    font-weight: bold;
}

.strength-strong {
    background: #e74c3c;
    color: white;
}

.strength-medium {
    background: #f39c12;
    color: white;
}

.strength-weak {
    background: #3498db;
    color: white;
}

.signal-metrics {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.metric {
    text-align: center;
}

.metric-value {
    font-size: 1.2em;
    font-weight: bold;
    color: #2c3e50;
}

.metric-label {
    font-size: 0.8em;
    color: #7f8c8d;
}

@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-wrapper {
        height: 250px;
    }
    
    .signals-container {
        grid-template-columns: 1fr;
    }
}
/* ==================== 新版Header样式 ==================== */
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo-area {
    flex: 1;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    font-size: 3.5em;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 15px;
    border-radius: 20px;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.logo-text h1 {
    font-size: 3em;
    margin: 0;
    background: linear-gradient(135deg, #2c3e50, #3498db);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.tagline {
    margin: 5px 0 0 0;
    color: #7f8c8d;
    font-size: 1.1em;
    font-style: italic;
}

.header-info {
    display: flex;
    gap: 25px;
}

.update-info, .stats-info {
    text-align: center;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.info-label {
    display: block;
    font-size: 0.85em;
    color: #7f8c8d;
    margin-bottom: 5px;
}

.info-value {
    display: block;
    font-size: 1.1em;
    font-weight: bold;
    color: #2c3e50;
}

/* ==================== 新版卡片样式 ==================== */
.card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.card h2 {
    color: #2c3e50;
    margin-bottom: 25px;
    font-size: 1.6em;
    border-bottom: 3px solid #3498db;
    padding-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ==================== 数据卡片样式 ==================== */
.data-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.data-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.data-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: rotate(45deg) translateX(-100%); }
    100% { transform: rotate(45deg) translateX(100%); }
}

.data-card .value {
    font-size: 2.8em;
    font-weight: bold;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.data-card .label {
    font-size: 1em;
    opacity: 0.9;
}

/* ==================== 关键词样式改进 ==================== */
.keyword-tag {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 10px 18px;
    border-radius: 25px;
    font-size: 0.95em;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.keyword-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

/* ==================== 文章列表样式改进 ==================== */
.article-item {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border-left: 5px solid #3498db;
    transition: all 0.3s ease;
    margin-bottom: 15px;
}

.article-item:hover {
    transform: translateX(5px);
    box-shadow: 0 6px 25px rgba(0,0,0,0.12);
}

.article-title {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.1em;
    line-height: 1.4;
}

.article-meta {
    color: #7f8c8d;
    font-size: 0.9em;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 15px;
}

/* ==================== 响应式设计改进 ==================== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .logo {
        justify-content: center;
        margin-bottom: 20px;
    }
    
    .header-info {
        justify-content: center;
        width: 100%;
    }
    
    .logo-icon {
        font-size: 2.5em;
        padding: 12px;
    }
    
    .logo-text h1 {
        font-size: 2.2em;
    }
    
    .data-cards {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: 20px;
    }
}
/* ==================== 留言系统样式 ==================== */
.comment-form {
    margin-bottom: 25px;
}

.comment-form textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e8ed;
    border-radius: 12px;
    font-size: 1em;
    resize: vertical;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.comment-form textarea:focus {
    outline: none;
    border-color: #3498db;
}

.comment-form button {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    font-size: 1em;
    cursor: pointer;
    margin-top: 10px;
    transition: all 0.3s ease;
}

.comment-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.comment-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 12px;
    border-left: 4px solid #3498db;
}

.comment-header {
    display: flex;
    justify-content: between;
    align-items: center;
    margin-bottom: 10px;
}

.comment-author {
    font-weight: bold;
    color: #2c3e50;
}

.comment-time {
    color: #7f8c8d;
    font-size: 0.85em;
}

.comment-text {
    color: #34495e;
    line-height: 1.5;
}
.logo-icon {
    width: 80px;
    height: 80px;
    padding: 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}
@media (max-width: 768px) {
    .logo-icon {
        width: 60px;
        height: 60px;
    }
    
    .logo-image {
        width: 50px;
        height: 50px;
    }
}
/* ==================== 腾讯问卷集成样式 ==================== */
.questionnaire-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin: 40px 0;
    align-items: start;
}

.questionnaire-info h4 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.3em;
}

.benefits-list {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
}

.benefits-list li {
    padding: 10px 0;
    color: #5a6c7d;
    font-size: 1em;
    line-height: 1.5;
    border-bottom: 1px solid #f1f3f4;
}

.benefits-list li:last-child {
    border-bottom: none;
}

.process-steps {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 12px;
    border-left: 4px solid #3498db;
}

.process-steps h5 {
    color: #2c3e50;
    margin-bottom: 15px;
    text-align: center;
}

.steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: #3498db;
    z-index: 1;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 40px;
    height: 40px;
    background: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-bottom: 8px;
    box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3);
}

.step-text {
    font-size: 0.85em;
    color: #5a6c7d;
    text-align: center;
    font-weight: 500;
}

.questionnaire-action {
    text-align: center;
    padding: 30px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 16px;
    border: 2px dashed #dee2e6;
}

.questionnaire-btn {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 18px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.2em;
    font-weight: 600;
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.questionnaire-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(52, 152, 219, 0.6);
    text-decoration: none;
    color: white;
}

.btn-icon {
    font-size: 1.4em;
}

.questionnaire-hint {
    color: #6c757d;
    font-size: 0.95em;
    margin-bottom: 25px;
    line-height: 1.5;
}

.qr-code {
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid #dee2e6;
}

.qr-code h5 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.qr-image {
    width: 160px;
    height: 160px;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 10px;
    background: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.qr-hint {
    color: #6c757d;
    font-size: 0.85em;
    margin-top: 10px;
}

/* 合作方向区域样式 */
.cooperation-areas {
    margin: 50px 0 40px 0;
}

.cooperation-areas h4 {
    text-align: center;
    color: #2c3e50;
    font-size: 1.5em;
    margin-bottom: 30px;
    position: relative;
}

.cooperation-areas h4::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    margin: 10px auto 0;
    border-radius: 2px;
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.area-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #3498db;
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.area-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.area-icon {
    font-size: 2em;
    flex-shrink: 0;
}

.area-content h5 {
    color: #2c3e50;
    margin: 0 0 8px 0;
    font-size: 1.1em;
}

.area-content p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9em;
    line-height: 1.5;
}

.contact-promise {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 12px;
    margin-top: 30px;
}

.promise-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #495057;
    font-weight: 500;
}

.promise-icon {
    font-size: 1.2em;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .questionnaire-section {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .questionnaire-action {
        padding: 25px;
    }
    
    .questionnaire-btn {
        padding: 16px 30px;
        font-size: 1.1em;
    }
    
    .steps {
        flex-direction: column;
        gap: 20px;
    }
    
    .steps::before {
        display: none;
    }
    
    .step {
        flex-direction: row;
        gap: 15px;
    }
    
    .step-text {
        text-align: left;
    }
    
    .areas-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-promise {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .questionnaire-action {
        padding: 20px;
    }
    
    .questionnaire-btn {
        flex-direction: column;
        gap: 10px;
        padding: 15px 20px;
    }
    
    .qr-image {
        width: 140px;
        height: 140px;
    }
}