:root {
    --primary-color: #0052D9;
    --text-color: #333;
    --bg-color: #f5f7fa;
    --card-shadow: 0 0 20px rgba(0, 0, 0, 0.08);
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

/* 页面标题 */
.page-header {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #1e90ff, #0066cc);
    color: white;
}

.page-header h1 {
    font-size: 2.5em;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.1em;
    opacity: 0.9;
}

/* 分类导航 */
.category-nav {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.category-list {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.category-list li {
    padding: 15px 25px;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}

.category-list li.active {
    color: var(--primary-color);
    position: relative;
}

.category-list li.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 25px;
    right: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px 3px 0 0;
}

/* 案例卡片网格 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.case-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease;
}

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

.case-logo {
    position: relative;
    padding: 30px;
    background: #f8f9fa;
    text-align: center;
}

.case-logo img {
    height: 60px;
    width: auto;
}

.case-tag {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 5px 15px;
    background: rgba(30,144,255,0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.9em;
}

.case-content {
    padding: 25px;
}

.case-title {
    font-size: 1.5em;
    margin-bottom: 10px;
    color: var(--text-color);
}

.case-desc {
    color: #666;
    margin-bottom: 20px;
}

.case-highlights {
    display: flex;
    justify-content: space-around;
    margin-bottom: 20px;
    padding: 20px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

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

.highlight-number {
    display: block;
    font-size: 2em;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.highlight-label {
    font-size: 0.9em;
    color: #666;
}

.case-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.feature-tag {
    padding: 5px 15px;
    background: var(--light-bg);
    border-radius: 20px;
    font-size: 0.9em;
    color: #666;
}

/* 分页器样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 0;
    gap: 20px;
}

.page-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border: 2px solid var(--primary-color);
    border-radius: 25px;
    background: white;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
}

.page-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-numbers {
    display: flex;
    gap: 10px;
}

.page-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.page-number:hover:not(.active) {
    background: var(--light-bg);
}

.page-number.active {
    background: var(--primary-color);
    color: white;
}

.page-dots {
    display: flex;
    align-items: center;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .case-grid {
        grid-template-columns: 1fr;
        padding: 20px;
    }

    .page-header {
        padding: 40px 20px;
    }

    .page-header h1 {
        font-size: 2em;
    }

    .pagination {
        flex-wrap: wrap;
    }

    .category-list {
        padding: 0 15px;
    }

    .category-list li {
        padding: 12px 15px;
    }

    .case-title {
        font-size: 1.3em;
    }
}

/* 头部区域 */
.hero-section {
    position: relative;
    background: linear-gradient(135deg, #0052D9 0%, #0046B8 100%);
    color: white;
    padding: 80px 20px;
    overflow: hidden;
    text-align: center;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/pattern.svg') center/cover;
    opacity: 0.1;
    animation: moveBg 20s linear infinite;
}

.animate-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.animate-subtitle {
    font-size: 18px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease 0.2s forwards;
    margin-bottom: 50px;
    color: rgba(255,255,255,0.9);
}

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

.hero-stats .stat-item {
    opacity: 0;
    transform: translateY(30px);
}

.animate-stat {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-stats .stat-item:nth-child(1) { animation-delay: 0.4s; }
.hero-stats .stat-item:nth-child(2) { animation-delay: 0.6s; }
.hero-stats .stat-item:nth-child(3) { animation-delay: 0.8s; }

.hero-stats .stat-number {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-stats .stat-label {
    font-size: 16px;
    opacity: 0.9;
}

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

@keyframes moveBg {
    from {
        transform: translateX(0) translateY(0);
    }
    to {
        transform: translateX(-20px) translateY(-20px);
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 20px;
    }

    .animate-title {
        font-size: 32px;
    }

    .animate-subtitle {
        font-size: 16px;
        margin-bottom: 30px;
    }

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

    .hero-stats .stat-number {
        font-size: 36px;
    }
}

/* 导航区域 */
.nav-wrapper {
    background: white;
    border-bottom: 1px solid #eee;
    margin-bottom: 30px;
}

.category-nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 40px;
    padding: 20px;
}

.category-nav a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 16px;
    position: relative;
    padding: 5px 0;
}

.category-nav a.active {
    color: var(--primary-color);
}

.category-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -21px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

/* 案例卡片区域 */
.cases-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 30px;
    padding: 20px;
}

.card-header {
    padding: 24px;
    background: #f8f9fa;
    position: relative;
    display: flex;
    align-items: center;
}

.company-logo {
    height: 40px;
    width: auto;
}
.industry-name{
    margin-left: 10px;
}
.industry-tag {
    position: absolute;
    right: 24px;
    top: 24px;
    padding: 4px 12px;
    background: rgba(30, 144, 255, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 14px;
}

.card-content {
    padding: 24px;
}

.company-name {
    font-size: 18px;
    margin-bottom: 8px;
}

.company-desc {
    color: #666;
    font-size: 14px;
    margin-bottom: 20px;
}

.stats-row {
    display: flex;
    justify-content: space-between;
    padding: 20px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    margin-bottom: 20px;
}

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

.stat-value {
    display: block;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: #666;
}

.features-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.features-list span {
    padding: 4px 12px;
    background: #f5f7fa;
    border-radius: 20px;
    font-size: 14px;
    color: #666;
}

/* 分页控制 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin: 40px 0;
}

.page-btn {
    padding: 8px 24px;
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    background: white;
    color: var(--primary-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.page-btn:hover {
    background: var(--primary-color);
    color: white;
}

.page-numbers {
    display: flex;
    gap: 8px;
    align-items: center;
}

.page-num {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.page-num.active {
    background: var(--primary-color);
    color: white;
}

.dots {
    color: #666;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .cases-container {
        grid-template-columns: 1fr;
    }
    
    .category-nav {
        overflow-x: auto;
        padding: 15px;
    }
    
    .pagination {
        flex-direction: column;
        gap: 15px;
    }
}

/* 统计数据样式 */
.stat-box {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    display: inline-flex;
    gap: 60px;
    margin-top: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.2);
}

.stat-item {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.stat-item:nth-child(1) { animation-delay: 0.4s; }
.stat-item:nth-child(2) { animation-delay: 0.6s; }
.stat-item:nth-child(3) { animation-delay: 0.8s; }

.stat-number {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}


/* 粒子背景效果 */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 1;
}

.hero-particles::before,
.hero-particles::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at center, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: particleMove 20s linear infinite;
}

.hero-particles::after {
    background-size: 30px 30px;
    animation-duration: 15s;
    opacity: 0.5;
}

/* 光晕效果 */
.hero-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    right: -50%;
    bottom: -50%;
    background: radial-gradient(circle at center, 
        rgba(255,255,255,0.1) 0%,
        transparent 70%);
    animation: glowPulse 4s ease-in-out infinite;
    z-index: 1;
}

/* 数字跳动效果 */
.stat-number {
    transition: transform 0.3s ease;
}

.stat-number:hover {
    transform: scale(1.1);
}

/* 添加合作伙伴区域样式 */
.partners-section {
    padding: 60px 20px;
    background: #fff;
    text-align: center;
}

.partners-section h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 40px;
}

.partners-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
    padding: 20px;
}

.partner-item {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.partner-item img {
    max-width: 100%;
    height: auto;
    transition: all 0.3s ease;
}

.partner-item:hover {
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}

.partner-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .partners-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }

    .partners-section h2 {
        font-size: 24px;
        margin-bottom: 30px;
    }

    .partner-item {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}