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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.7;
    color: #333;
    background: linear-gradient(135deg, #f0f9f4 0%, #e8f5e9 100%);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* 页面头部 */
.hero-section {
    background: linear-gradient(135deg, #37ad90 0%, #43b48f 50%, #42c092 100%);
    color: white;
    padding: 80px 20px;
    text-align: center;
    border-radius: 20px;
    margin-bottom: 50px;
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.3);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-content p {
    font-size: 1.2rem;
    opacity: 0.95;
    max-width: 800px;
    margin: 0 auto;
}

/* 数据统计区域 */
.stats-section {
    margin-bottom: 50px;
}

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

.stat-card {
    background: white;
    padding: 35px 25px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    transform-style: preserve-3d;
}

.stat-card:hover {
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.2);
}

.stat-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #43b48f 0%, #42c092 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #10b981;
    margin-bottom: 8px;
}

.stat-label {
    color: #666;
    font-size: 1rem;
}

/* 产品介绍卡片 */
.intro-section {
    margin-bottom: 60px;
}

.intro-card {
    max-width: 600px;
    margin: 0 auto;
    height: 400px;
    perspective: 1000px;
    cursor: pointer;
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.intro-card:hover .card-inner {
    transform: rotateY(180deg);
}

.card-front,
.card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.card-front {
    background: linear-gradient(135deg, #43b48f 0%, #42c092 100%);
    color: white;
}

.card-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.card-front h2 {
    font-size: 2rem;
}

.card-back {
    background: white;
    transform: rotateY(180deg);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.card-back p {
    color: #555;
    text-align: center;
    margin-bottom: 15px;
    font-size: 1rem;
    line-height: 1.8;
}

/* 核心功能区域 */
.features-section {
    margin-bottom: 60px;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: #065f46;
    margin-bottom: 40px;
    font-weight: 600;
}

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

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    transform-style: preserve-3d;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #43b48f 0%, #42c092 100%);
}

.feature-card:hover {
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.2);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(52, 211, 153, 0.1) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: #10b981;
    margin-bottom: 20px;
}

.feature-card h3 {
    color: #065f46;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.feature-card p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 应用案例区域 */
.cases-section {
    margin-bottom: 60px;
}

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

.case-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    padding: 35px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    transform-style: preserve-3d;
}

.case-card:hover {
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.2);
}

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

.case-header i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #43b48f 0%, #42c092 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
}

.case-header h3 {
    color: #065f46;
    font-size: 1.2rem;
}

.case-meta {
    color: #888;
    font-size: 0.85rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.case-card p {
    color: #555;
    line-height: 1.7;
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.case-result {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(52, 211, 153, 0.05) 100%);
    padding: 15px;
    border-radius: 10px;
    font-size: 0.9rem;
    color: #333;
}

.case-result span {
    font-weight: bold;
    color: #10b981;
}

/* 页脚 */
.footer {
    background: #065f46;
    color: white;
    text-align: center;
    padding: 50px 20px;
    border-radius: 20px;
    margin-top: 40px;
}

.footer p {
    opacity: 0.9;
    line-height: 1.8;
    font-size: 1.1rem;
}

.footer .copyright {
    margin-top: 15px;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }

    .stat-card {
        padding: 25px 20px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .features-grid,
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card,
    .case-card {
        padding: 25px;
    }

    .intro-card {
        height: 350px;
    }

    .card-front,
    .card-back {
        padding: 25px;
    }

    .section-title {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    .hero-section {
        padding: 50px 15px;
    }

    .hero-content h1 {
        font-size: 1.6rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }
}