/* ===== Hero 区域 ===== */
.partnership-hero {
    background: linear-gradient(135deg, #BFDBFE 0%, #0972fb 100%);
    padding: 6rem 0 5rem;
    position: relative;
    overflow: hidden;
}

.partnership-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.partnership-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-heading);
    line-height: 1.2;
    margin-bottom: 1.5rem;
    text-align: center;
}

.partnership-subtitle {
    font-size: 1.25rem;
    color: var(--text-body);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 700px;
    text-align: center;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* ===== 合作优势区域 ===== */
.benefits-section {
    padding: 6rem 0;
    background: white;
}

.section-header {
    margin-bottom: 4rem;
}

.section-label {
    display: inline-flex;
    align-items: center;
    color: var(--brand-primary);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: 1rem;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-body);
    max-width: 700px;
    margin: 0 auto;
}

.benefit-card {
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-subtle);
    height: 100%;
    transition: all 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
}

.benefit-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 1rem;
}

.benefit-desc {
    color: var(--text-body);
    line-height: 1.6;
}

/* ===== 合作模式区域 ===== */
.models-section {
    padding: 6rem 0;
    background: var(--bg-soft);
}

.model-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-subtle);
    height: 100%;
    transition: all 0.3s ease;
}

.model-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.model-card.featured {
    position: relative;
    border: 2px solid var(--brand-primary);
    transform: scale(1.05);
}

.model-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.model-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--brand-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 1;
}

.model-header {
    padding: 2rem 2rem 1rem;
    text-align: center;
    background: var(--bg-soft);
}

.model-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 0.5rem;
}

.model-price {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--brand-primary);
}

.model-features {
    list-style: none;
    padding: 2rem 2rem 1rem;
    margin: 0;
}

.model-features li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-body);
}

.model-features li i {
    color: var(--brand-primary);
    font-size: 0.875rem;
}

.model-footer {
    padding: 1rem 2rem 2rem;
    text-align: center;
}

.model-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}



/* ===== 成功案例区域 ===== */
.cases-section {
    padding: 6rem 0;
    background: var(--bg-soft);
}

.case-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-subtle);
    height: 100%;
    overflow: hidden;
}

.case-content {
    padding: 2.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.case-icon {
    font-size: 2.5rem;
    color: var(--brand-primary);
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.case-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-body);
    flex-grow: 1;
    margin-bottom: 2rem;
}

.case-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.author-info h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 0.25rem;
}

.author-info span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===== 响应式设计 ===== */
@media (max-width: 991.98px) {
    .partnership-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .model-card.featured {
        transform: scale(1);
    }
    
    .model-card.featured:hover {
        transform: scale(1) translateY(-10px);
    }
}

@media (max-width: 767.98px) {
    .partnership-hero {
        padding: 4rem 0 3rem;
    }
    
    .partnership-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .benefits-section,
    .models-section,
    .application-section,
    .cases-section {
        padding: 4rem 0;
    }
    
    .application-form {
        padding: 2rem;
    }
}