/* 新增样式 */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    /*background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);*/
    background: linear-gradient(rgba(30, 30, 60, 0.7), rgba(30, 30, 60, 0.7)), url(../img/index_background.png);
    overflow: hidden;
}
.hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    padding: 120px 0;
}
.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
}
.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.btn-primary-custom {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    border: none;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}
.btn-primary-custom:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.4);
    color: #fff;
}
.btn-outline-custom {
    background: transparent;
    color: #fff;
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    border: 2px solid rgba(255,255,255,0.5);
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}
.btn-outline-custom:hover {
    background: rgba(255,255,255,0.1);
    border-color: #fff;
    color: #fff;
}
.hero-bg-pattern {
    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 1440 320"><path fill="rgba(255,255,255,0.05)" d="M0,96L48,112C96,128,192,160,288,186.7C384,213,480,235,576,213.3C672,192,768,128,864,128C960,128,1056,192,1152,208C1248,224,1344,192,1392,176L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}
.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}
.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    animation: float 20s infinite ease-in-out;
}
.shape:nth-child(1) { width: 80px; height: 80px; top: 20%; left: 10%; animation-delay: 0s; }
.shape:nth-child(2) { width: 120px; height: 120px; top: 60%; left: 80%; animation-delay: 2s; }
.shape:nth-child(3) { width: 60px; height: 60px; top: 80%; left: 30%; animation-delay: 4s; }
.shape:nth-child(4) { width: 150px; height: 150px; top: 30%; left: 70%; animation-delay: 6s; }
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(180deg); }
}
.stats-section {
    background: #fff;
    padding: 80px 0;
}
.stat-item {
    text-align: center;
    padding: 30px;
}
.stat-number {
    font-size: 48px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label {
    font-size: 16px;
    color: #666;
    margin-top: 10px;
}
.solution-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    height: 100%;
}
.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
}
.solution-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #fff;
}
.solution-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #333;
}
.solution-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}
.section-title {
    text-align: center;
    margin-bottom: 60px;
}
.section-title h2 {
    font-size: 40px;
    font-weight: 700;
    color: #333;
    margin-bottom: 16px;
}
.section-title p {
    font-size: 18px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}
.feature-section {
    padding: 100px 0;
    background: #f8f9fa;
}
.feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 40px;
}
.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
    color: #fff;
    font-size: 24px;
}
.feature-content h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}
.feature-content p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 0;
    text-align: center;
    color: #fff;
}
.cta-section h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
}
.cta-section p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}
.btn-white {
    background: #fff;
    color: #667eea;
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}
.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    color: #667eea;
}
/* 成功案例悬浮卡片样式 */
.case-hover-section {
    padding: 100px 0;
    background: #fff;
}
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
@media (max-width: 992px) {
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .case-grid {
        grid-template-columns: 1fr;
    }
}
.case-card-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    height: 280px;
    cursor: pointer;
}
.case-card-wrapper:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0,0,0,0.15);
}
.case-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    transition: all 0.3s ease;
}
.case-card-bg.village {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.case-card-bg.community {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}
.case-card-bg.campus {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}
.case-card-icon {
    font-size: 80px;
    color: #fff;
    margin-bottom: 20px;
    opacity: 1;
    transition: all 0.3s ease;
}
.case-card-title {
    font-size: 24px;
    font-weight: 600;
    color: #fff;
    text-align: center;
    transition: all 0.3s ease;
}
.case-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    opacity: 0;
    transition: all 0.3s ease;
}
.case-card-wrapper:hover .case-card-overlay {
    opacity: 1;
}
.case-card-wrapper:hover .case-card-bg {
    opacity: 0;
}
.case-overlay-title {
    font-size: 22px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 15px;
}
.case-overlay-items {
    text-align: left;
    color: #fff;
    font-size: 14px;
    line-height: 1.8;
}
.case-overlay-items li {
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}
.case-overlay-items li::before {
    content: "●";
    position: absolute;
    left: 0;
    color: #4facfe;
}
.case-overlay-btn {
    margin-top: 20px;
    padding: 10px 30px;
    background: #fff;
    color: #333;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}
.case-overlay-btn:hover {
    transform: scale(1.05);
    color: #333;
}