/* 主标题区域 */
/* 修改 zntgwa.css 中的 .hero-copy 部分 */
.hero-copy {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 40, 0.7)),
    url('../img/banner/banner-zntgwa.jpg');
    background-size: cover;
    background-position: center;
    padding: 100px 5% 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
    color: white;
}

.hero-copy::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(79, 195, 247, 0.1) 0%, transparent 70%);
    z-index: 0;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: 1.4rem;
    max-width: 700px;
    margin: 0 auto 30px;
    font-weight: 300;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 14px 35px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(30, 136, 229, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(30, 136, 229, 0.4);
}

/* 服务优势部分 - 已修改为卡片网格布局 */
.benefits-section {
    padding: 100px 5%;
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.05), rgba(33, 150, 243, 0.02));
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--primary-dark);
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 60px;
}

/* 服务优势网格 - 更新为卡片网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.benefit-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.benefit-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-dark);
    font-weight: 700;
}

.benefit-desc {
    color: var(--gray);
    font-size: 1rem;
}

/* 技术原理部分 */
.tech-section {
    padding: 100px 5%;
    background: white;
}

.tech-container {
    display: flex;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
    gap: 40px;
}

.tech-content {
    flex: 1;
    min-width: 300px;
}

.tech-image {
    flex: 1;
    min-width: 300px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    position: relative;
}

.tech-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.tech-title {
    font-size: 2.2rem;
    margin-bottom: 25px;
    color: var(--primary-dark);
    position: relative;
    padding-bottom: 15px;
    font-weight: 700;
}

.tech-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

.tech-desc {
    margin-bottom: 30px;
    color: var(--dark);
    font-size: 1.1rem;
    line-height: 1.8;
    font-weight: 500;
}

.tech-feature {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.tech-feature-icon {
    font-size: 1.5rem;
    color: var(--primary);
    margin-right: 15px;
    min-width: 30px;
}

.tech-feature-content h4 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: var(--primary-dark);
}

/* 分发矩阵部分 */
.distribution-section {
    padding: 100px 5%;
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.05), rgba(33, 150, 243, 0.02));
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 15px;
    line-height: 1;
}

.stat-label {
    font-size: 1.2rem;
    color: var(--dark);
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.media-item {
    background: white;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.media-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.media-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.media-name {
    font-size: 0.9rem;
    color: var(--dark);
    font-weight: 500;
}

/* 流程部分 - 已修改为卡片网格布局 */
.process-section {
    padding: 100px 5%;
    background: white;
}

/* 流程步骤网格 */
.process-steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.process-step-card {
    background: white;
    border-radius: 15px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.process-step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 20px;
    position: relative;
    z-index: 2;
}

.step-title {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-dark);
}

.step-desc {
    color: var(--gray);
    font-size: 0.95rem;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate {
    animation: fadeIn 0.8s ease forwards;
}

/* 新增的卡片样式 */
.cards-grid {
    display: grid;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.ai-cards-grid {
    grid-template-columns: repeat(3, 1fr);
}

.risk-cards-grid {
    grid-template-columns: repeat(4, 1fr);
}

.card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.card-title {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary-dark);
}

.card-content {
    color: var(--gray);
    font-size: 1rem;
    line-height: 1.6;
}
/* 移除图片后的布局调整 */
.tech-content-full {
    width: 100%;
}
/* 响应式设计 */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .tech-container {
        flex-direction: column;
    }

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

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

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .ai-cards-grid,
    .risk-cards-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section {
        padding: 60px 5%;
    }

    .stats-grid,
    .process-steps-grid {
        grid-template-columns: 1fr;
    }
}