/* ============================================
   项目介绍页面样式
   ============================================ */

/* 痛点与解决方案 */
.pain-card, .solution-card {
    background: white;
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.pain-card:hover, .solution-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.pain-header, .solution-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.pain-icon, .solution-icon {
    font-size: 1.5rem;
}

.pain-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #ef4444;
}

.solution-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-green);
}

.pain-list, .solution-list {
    list-style: none;
}

.pain-list li, .solution-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
    color: var(--text-muted);
}

.pain-list li:last-child, .solution-list li:last-child {
    border-bottom: none;
}

.pain-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ef4444;
    flex-shrink: 0;
}

.solution-check {
    color: var(--accent-green);
    font-weight: 700;
    flex-shrink: 0;
}

/* 核心功能 */
.section-features-bg {
    background: var(--bg-light);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-gold), #ff3b30);
    border-radius: 4px 4px 0 0;
}

.feature-number {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-gold);
    background: #ffeee6;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 1rem;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* 技术优势 */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.tech-card {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
}

.tech-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.tech-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.tech-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* 业务场景 */
.section-scenarios {
    background: linear-gradient(135deg, #2d2d2d, #3d3d3d);
    color: white;
}

.section-scenarios .tag {
    background: rgba(242, 90, 0, 0.2);
    color: #ff5722;
}

.section-scenarios h2 {
    color: white;
}

.section-scenarios p {
    color: rgba(255,255,255,0.7);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.scenario-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.scenario-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-4px);
}

.scenario-image {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.scenario-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.75rem;
}

.scenario-content p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
}

/* 响应式 */
@media (max-width: 1024px) {
    .feature-grid, .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .feature-grid, .tech-grid, .scenario-grid {
        grid-template-columns: 1fr;
    }
}