/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

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

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.nav-logo i {
    margin-right: 10px;
    color: #ff6b6b;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #ffd93d;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #ffd93d;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主要内容 */
.main-content {
    margin-top: 70px;
}

/* 英雄区域 */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.challenge-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 40px;
    backdrop-filter: blur(10px);
}

.challenge-info p {
    margin: 8px 0;
    font-size: 1rem;
    opacity: 0.9;
}

.challenge-info strong {
    color: #ffd93d;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffd93d;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.6);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

.btn-outline {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-outline:hover {
    background: #667eea;
    color: white;
}

/* 搜索区域 */
.search-section {
    background: white;
    padding: 40px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.search-container {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 300px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 15px;
    color: #666;
    z-index: 1;
}

.search-box input {
    width: 100%;
    padding: 15px 50px 15px 45px;
    border: 2px solid #e2e8f0;
    border-radius: 50px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: #667eea;
}

.search-btn {
    position: absolute;
    right: 5px;
    background: #667eea;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 50px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.search-btn:hover {
    background: #5a67d8;
}

.filter-controls {
    display: flex;
    gap: 15px;
}

.filter-select {
    padding: 12px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 25px;
    background: white;
    font-size: 1rem;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: #667eea;
}

/* 拼图区域 */
.puzzles-section {
    padding: 60px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #2d3748;
}

.puzzle-count {
    background: #667eea;
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
}

.puzzles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.puzzle-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    border-left: 5px solid #667eea;
}

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

.puzzle-card.solved {
    border-left-color: #48bb78;
}

.puzzle-card.unsolved {
    border-left-color: #ed8936;
}

.puzzle-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.puzzle-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2d3748;
}

.puzzle-status {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.puzzle-status.solved {
    background: #c6f6d5;
    color: #22543d;
}

.puzzle-status.unsolved {
    background: #fed7d7;
    color: #742a2a;
}

.puzzle-info {
    margin-bottom: 15px;
}

.puzzle-info-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.puzzle-info-label {
    color: #666;
    font-weight: 500;
}

.puzzle-info-value {
    color: #2d3748;
    font-weight: 600;
    word-break: break-all;
}

.puzzle-actions {
    display: flex;
    gap: 10px;
}

.puzzle-actions .btn {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination button {
    padding: 10px 15px;
    border: 2px solid #e2e8f0;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pagination button:hover,
.pagination button.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 统计区域 */
.stats-section {
    background: white;
    padding: 60px 0;
}

.stats-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2d3748;
    margin-bottom: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.stat-icon {
    font-size: 2.5rem;
    opacity: 0.8;
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.difficulty-chart {
    background: #f7fafc;
    padding: 30px;
    border-radius: 15px;
    margin-top: 40px;
}

.difficulty-chart h3 {
    margin-bottom: 20px;
    color: #2d3748;
}

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

/* 关于区域 */
.about-section {
    padding: 60px 0;
    background: white;
}

.about-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2d3748;
    margin-bottom: 40px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h3 {
    color: #2d3748;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.about-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.puzzle-examples {
    background: #f7fafc;
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    border-left: 4px solid #667eea;
}

.puzzle-examples p {
    margin: 8px 0;
    font-family: monospace;
    color: #2d3748;
}

blockquote {
    background: #f0f4f8;
    border-left: 4px solid #667eea;
    padding: 20px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: #4a5568;
}

blockquote cite {
    display: block;
    margin-top: 10px;
    font-size: 0.9rem;
    color: #667eea;
    font-weight: 600;
}

.history-timeline h3 {
    color: #2d3748;
    margin-bottom: 30px;
    font-size: 1.5rem;
}

.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #667eea;
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
    padding-left: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -22px;
    top: 5px;
    width: 12px;
    height: 12px;
    background: #667eea;
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px #667eea;
}

.timeline-date {
    font-weight: 600;
    color: #667eea;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.timeline-content {
    color: #4a5568;
    line-height: 1.6;
}

/* 工具区域 */
.tools-section {
    padding: 60px 0;
    background: #f7fafc;
}

.tools-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #2d3748;
    margin-bottom: 40px;
}

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

.tool-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
}

.tool-icon {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 20px;
}

.tool-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2d3748;
}

.tool-card p {
    color: #666;
    margin-bottom: 20px;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 30px;
    border-radius: 15px 15px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
}

.close {
    font-size: 2rem;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.close:hover {
    opacity: 0.7;
}

.modal-body {
    padding: 30px;
}

/* 加载指示器 */
.loading {
    display: none;
    position: fixed;
    z-index: 3000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
}

.loading.show {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #e2e8f0;
    border-top: 5px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 页脚 */
.footer {
    background: #2d3748;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: #ffd93d;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #cbd5e0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #ffd93d;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #4a5568;
    color: #cbd5e0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .search-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: auto;
    }
    
    .puzzles-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .puzzle-card {
        padding: 20px;
    }
    
    .modal-body {
        padding: 20px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.puzzle-card {
    animation: fadeInUp 0.6s ease forwards;
}

.puzzle-card:nth-child(1) { animation-delay: 0.1s; }
.puzzle-card:nth-child(2) { animation-delay: 0.2s; }
.puzzle-card:nth-child(3) { animation-delay: 0.3s; }
.puzzle-card:nth-child(4) { animation-delay: 0.4s; }
.puzzle-card:nth-child(5) { animation-delay: 0.5s; }
.puzzle-card:nth-child(6) { animation-delay: 0.6s; }

/* 新增样式 */
.key-display {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #f7fafc;
    padding: 10px;
    border-radius: 8px;
    font-family: monospace;
    word-break: break-all;
}

.key-display code {
    flex: 1;
    background: none;
    padding: 0;
    font-size: 0.9rem;
}

.balance-info {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: 5px;
}

.btc-symbol {
    color: #f7931a;
    font-weight: bold;
}

.balance {
    color: #2d3748;
    font-weight: 600;
}

.progress-container {
    position: relative;
    background: #e2e8f0;
    height: 20px;
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 10px;
    transition: width 0.3s ease;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* 常见问题样式 */
.faq-section {
    padding: 80px 0;
    background: #f8fafc;
}

.faq-content {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.faq-item h3 {
    color: #1a202c;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 10px;
}

.faq-item p {
    color: #4a5568;
    line-height: 1.6;
    margin: 0;
}

/* 工具分类样式 */
.tools-category {
    margin-bottom: 60px;
}

.tools-category h3 {
    color: #1a202c;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 15px;
    text-align: center;
}

.category-description {
    text-align: center;
    color: #718096;
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.tool-features {
    display: flex;
    gap: 8px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.feature-tag {
    background: #e2e8f0;
    color: #4a5568;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 资源链接样式 */
.resource-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.resource-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    text-decoration: none;
    color: #4a5568;
    font-weight: 500;
    transition: all 0.3s ease;
}

.resource-link:hover {
    border-color: #667eea;
    color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.resource-link i {
    font-size: 1.2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .faq-item {
        padding: 20px;
    }
    
    .faq-item h3 {
        font-size: 1.1rem;
    }
    
    .tools-category h3 {
        font-size: 1.5rem;
    }
    
    .resource-links {
        flex-direction: column;
        align-items: center;
    }
    
    .resource-link {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* GPU云搜索页面样式 */
.gpu-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.gpu-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="gpu-grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23gpu-grain)"/></svg>');
    opacity: 0.3;
}

.gpu-hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(251, 191, 36, 0.2);
    border: 1px solid #fbbf24;
    border-radius: 25px;
    padding: 8px 20px;
    margin-bottom: 20px;
    font-weight: 600;
    color: #fbbf24;
}

.hero-highlights {
    display: flex;
    gap: 30px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    color: #fbbf24;
}

.highlight-item i {
    font-size: 1.2rem;
}

.hero-visual {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.performance-showcase {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.performance-showcase h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-align: center;
    color: #fbbf24;
}

.comparison-chart {
    margin-bottom: 15px;
}

.chart-item {
    margin-bottom: 15px;
}

.chart-label {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.chart-bar {
    height: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    position: relative;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    border-radius: 15px;
    position: relative;
    transition: width 1s ease;
}

.cpu-bar .bar-fill {
    background: linear-gradient(90deg, #ef4444, #dc2626);
}

.gpu-bar .bar-fill {
    background: linear-gradient(90deg, #22c55e, #16a34a);
}

.bar-text {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.chart-note {
    text-align: center;
    font-size: 0.9rem;
    color: #fbbf24;
    font-weight: 600;
}

.chart-note i {
    margin-right: 5px;
}

/* 技术优势部分 */
.tech-advantages-section {
    padding: 80px 0;
    background: #f8fafc;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.2rem;
    color: #718096;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.advantage-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e2e8f0;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
    font-size: 1.5rem;
}

.advantage-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 15px;
}

.advantage-card p {
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 20px;
}

.tech-specs, .performance-metrics, .cost-comparison, .security-features, .cloud-features, .support-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.spec-item, .metric-item, .cost-item, .security-item, .cloud-item, .support-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #f1f5f9;
}

.spec-item:last-child, .metric-item:last-child, .cost-item:last-child, .security-item:last-child, .cloud-item:last-child, .support-item:last-child {
    border-bottom: none;
}

.spec-label, .cost-label {
    color: #718096;
    font-size: 0.9rem;
}

.spec-value, .cost-value {
    color: #1a202c;
    font-weight: 600;
}

.metric-number {
    font-size: 1.2rem;
    font-weight: 700;
    color: #667eea;
}

.metric-label {
    color: #718096;
    font-size: 0.9rem;
}

.cost-savings {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #22c55e;
    font-weight: 600;
    margin-top: 10px;
}

.security-item, .cloud-item, .support-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #4a5568;
}

.security-item i, .cloud-item i, .support-item i {
    color: #667eea;
    width: 16px;
}

/* 联系客服部分 */
.contact-section {
    padding: 80px 0;
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.contact-card {
    background: #f8fafc;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 1.5rem;
}

.contact-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 10px;
}

.contact-card p {
    color: #718096;
    margin-bottom: 20px;
}

.contact-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: white;
    border-radius: 8px;
    padding: 10px;
    border: 1px solid #e2e8f0;
}

.contact-info span {
    color: #4a5568;
    font-weight: 500;
    flex: 1;
    text-align: left;
}

.payment-info {
    background: #f8fafc;
    border-radius: 15px;
    padding: 30px;
    border: 1px solid #e2e8f0;
}

.payment-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 20px;
    text-align: center;
}

.payment-details {
    max-width: 600px;
    margin: 0 auto;
}

.payment-item {
    margin-bottom: 20px;
}

.payment-label {
    color: #4a5568;
    font-weight: 500;
    margin-bottom: 8px;
}

.payment-value {
    display: flex;
    align-items: center;
    gap: 10px;
    background: white;
    border-radius: 8px;
    padding: 12px;
    border: 1px solid #e2e8f0;
}

.payment-value code {
    flex: 1;
    color: #1a202c;
    font-family: monospace;
    font-size: 0.9rem;
    background: none;
    border: none;
    padding: 0;
}

.payment-note {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fef3cd;
    border: 1px solid #fde68a;
    border-radius: 8px;
    padding: 15px;
    color: #92400e;
    margin-top: 20px;
}

.payment-note i {
    color: #f59e0b;
    flex-shrink: 0;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 6px;
    border: 1px solid #d1d5db;
    background: white;
    color: #4a5568;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-small:hover {
    background: #f3f4f6;
    border-color: #9ca3af;
}

/* 统计信息部分样式 */
.stats-section {
    padding: 80px 0;
    background: #f8fafc;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.stat-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e2e8f0;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 1.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 5px;
}

.stat-desc {
    font-size: 0.9rem;
    color: #718096;
}

/* 详细统计信息 */
.detailed-stats {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 50px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: #f8fafc;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
}

.stat-item .stat-label {
    font-size: 0.9rem;
    color: #718096;
    margin-bottom: 10px;
}

.stat-item .stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1a202c;
}

/* 图表容器 */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.chart-section {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.chart-section h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 25px;
    text-align: center;
}

.chart-container {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 进度图表 */
.progress-chart {
    width: 100%;
}

.progress-bar-container {
    margin-bottom: 20px;
}

.progress-bar {
    height: 40px;
    background: #e2e8f0;
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #22c55e, #16a34a);
    border-radius: 20px;
    transition: width 1s ease;
    position: relative;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.progress-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: #4a5568;
}

.label-solved {
    color: #22c55e;
    font-weight: 600;
}

.label-unsolved {
    color: #ef4444;
    font-weight: 600;
}

/* 难度分布图表 */
.difficulty-bars {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
}

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

.bar-label {
    width: 80px;
    font-size: 0.9rem;
    color: #4a5568;
    font-weight: 500;
}

.bar-fill {
    height: 25px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 12px;
    position: relative;
    flex: 1;
    transition: width 1s ease;
}

.bar-value {
    width: 40px;
    text-align: center;
    font-weight: 600;
    color: #1a202c;
}

/* 奖金分布图表 */
.prize-distribution {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
}

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

.range-label {
    width: 100px;
    font-size: 0.9rem;
    color: #4a5568;
    font-weight: 500;
}

.range-bar {
    height: 20px;
    background: #e2e8f0;
    border-radius: 10px;
    position: relative;
    flex: 1;
    overflow: hidden;
}

.range-fill {
    height: 100%;
    background: linear-gradient(90deg, #f59e0b, #d97706);
    border-radius: 10px;
    transition: width 1s ease;
}

.range-count {
    width: 50px;
    text-align: center;
    font-weight: 600;
    color: #1a202c;
    font-size: 0.9rem;
}

/* 最近解决记录 */
.recent-solves {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.recent-solves h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 25px;
    text-align: center;
}

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

.solve-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
    transition: transform 0.3s ease;
}

.solve-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.solve-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.solve-details {
    flex: 1;
}

.solve-prize {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 5px;
}

.solve-date {
    font-size: 0.9rem;
    color: #718096;
}

.solve-status {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    flex-shrink: 0;
}

.solve-status.solved {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .stats-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .charts-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .chart-section {
        padding: 20px;
    }
    
    .chart-container {
        height: auto;
        min-height: 150px;
    }
    
    .difficulty-bar, .prize-range {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .bar-label, .range-label {
        width: auto;
    }
    
    .solve-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .solve-details {
        order: 2;
    }
    
    .solve-status {
        order: 3;
    }
}

.gpu-hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 15px;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
}

/* 定价部分 */
.pricing-section {
    padding: 80px 0;
    background: #f8fafc;
}

.section-subtitle {
    text-align: center;
    color: #718096;
    font-size: 1.2rem;
    margin-bottom: 60px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.pricing-card.featured {
    border-color: #10b981;
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.pricing-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: #10b981;
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 30px;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 15px;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 5px;
}

.currency {
    font-size: 1.2rem;
    color: #667eea;
    font-weight: 600;
}

.amount {
    font-size: 2.5rem;
    color: #667eea;
    font-weight: 700;
}

.period {
    font-size: 1rem;
    color: #718096;
}

.pricing-features {
    margin-bottom: 30px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    color: #4a5568;
}

.feature i {
    color: #667eea;
    width: 20px;
    text-align: center;
}

.pricing-btn {
    width: 100%;
    padding: 12px;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
}

/* 功能特性部分 */
.features-section {
    padding: 80px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 15px;
}

.feature-card p {
    color: #718096;
    line-height: 1.6;
}

/* 使用流程部分 */
.process-section {
    padding: 80px 0;
    background: #f8fafc;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a202c;
    margin-bottom: 15px;
}

.step-content p {
    color: #718096;
    line-height: 1.6;
}

/* GPU云搜索响应式设计 */
@media (max-width: 768px) {
    .gpu-hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-5px);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* GPU推广区域样式 */
.gpu-promo-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.gpu-promo-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.promo-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    z-index: 2;
}

.promo-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(251, 191, 36, 0.2);
    border: 1px solid #fbbf24;
    border-radius: 25px;
    padding: 8px 20px;
    margin-bottom: 20px;
    font-weight: 600;
    color: #fbbf24;
}

.promo-header h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.promo-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    margin: 0;
}

.promo-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 80px;
    align-items: start;
    position: relative;
    z-index: 2;
}

.promo-description h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fbbf24;
}

.promo-description p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.7;
}

.comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px;
    margin: 30px 0;
    align-items: center;
}

.comparison-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.comparison-item.old {
    border-color: rgba(239, 68, 68, 0.3);
}

.comparison-item.new {
    border-color: rgba(34, 197, 94, 0.3);
}

.comparison-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.comparison-item.old .comparison-icon {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.comparison-item.new .comparison-icon {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.comparison-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.comparison-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comparison-content li {
    padding: 5px 0;
    font-size: 0.95rem;
    opacity: 0.9;
}

.comparison-arrow {
    font-size: 2rem;
    color: #fbbf24;
    text-align: center;
}

.promo-features h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 25px;
    color: #fbbf24;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: rgba(251, 191, 36, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fbbf24;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.feature-content h5 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.feature-content p {
    font-size: 0.9rem;
    opacity: 0.8;
    margin: 0;
    line-height: 1.4;
}

.promo-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.promo-buttons .btn {
    padding: 15px 30px;
    font-weight: 600;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.promo-buttons .btn-primary {
    background: #fbbf24;
    color: #1a202c;
    border: 2px solid #fbbf24;
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.3);
}

.promo-buttons .btn-primary:hover {
    background: transparent;
    color: #fbbf24;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(251, 191, 36, 0.4);
}

.promo-buttons .btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.promo-buttons .btn-outline:hover {
    background: white;
    color: #667eea;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}

.performance-chart {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.performance-chart h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-align: center;
    color: #fbbf24;
}

.chart-container {
    margin-bottom: 15px;
}

.chart-bar {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 15px;
}

.bar-label {
    width: 100px;
    font-size: 0.9rem;
    font-weight: 500;
}

.bar-fill {
    height: 30px;
    border-radius: 15px;
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 15px;
    font-weight: 600;
    font-size: 0.9rem;
}

.bar-fill.cpu {
    background: linear-gradient(90deg, #ef4444, #dc2626);
}

.bar-fill.gpu {
    background: linear-gradient(90deg, #22c55e, #16a34a);
}

.bar-value {
    color: white;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.chart-note {
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.8;
    color: #fbbf24;
}

.gpu-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.stat-card.featured {
    border-color: #fbbf24;
    background: rgba(251, 191, 36, 0.1);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-card.featured:hover {
    background: rgba(251, 191, 36, 0.15);
}

.stat-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 1.3rem;
    color: #fbbf24;
}

.stat-card.featured .stat-icon {
    background: rgba(251, 191, 36, 0.3);
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 3px;
}

.stat-desc {
    font-size: 0.8rem;
    opacity: 0.7;
}

/* GPU链接样式 */
.gpu-link {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white !important;
    border-radius: 8px;
    padding: 8px 16px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.gpu-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.gpu-link i {
    margin-right: 5px;
}

/* GPU推广响应式设计 */
@media (max-width: 768px) {
    .gpu-promo-section {
        padding: 60px 0;
    }
    
    .promo-header h2 {
        font-size: 2.2rem;
    }
    
    .promo-subtitle {
        font-size: 1.1rem;
    }
    
    .promo-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .comparison {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
        font-size: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .promo-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .promo-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .gpu-stats {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    
    .stat-card {
        padding: 15px;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .performance-chart {
        padding: 20px;
    }
    
    .chart-bar {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .bar-label {
        width: auto;
    }
    
    .bar-fill {
        height: 25px;
        font-size: 0.8rem;
    }
}