/* ========== 首页专用样式 ========== */

/* 首页常规横幅 */
.hero {
    color: #fff;
    height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 72px;
    position: relative;
    overflow: hidden;
}

/* 背景全屏覆盖 */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/index-banner.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}

/* 渐变遮罩 */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(8, 48, 107, 0.75), rgba(12, 79, 150, 0.55));
    z-index: 1;
}

.hero .hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    padding: 0 24px;
}

.hero .hero-content h2 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
    color: #fff;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero .hero-content p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 28px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 首页按钮 - 深色背景上的白色按钮 */
.hero-buttons .btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.hero-buttons .btn-secondary:hover {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
}

/* ========== 首页产品/解决方案 ========== */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 28px;
    margin-top: 40px;
}

.solution-card {
    text-align: center;
    padding: 44px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--duration) var(--ease-out);
    border: 1px solid var(--border-light);
}

.solution-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-alpha);
}

.solution-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: #fff;
    font-size: 2rem;
    box-shadow: 0 8px 24px rgba(12, 79, 150, 0.25);
    transition: transform var(--duration) var(--ease-out);
}

.solution-card:hover .solution-icon {
    transform: scale(1.08);
}

.solution-card h4 {
    color: var(--primary);
    margin-bottom: 14px;
    font-size: 1.3rem;
    font-weight: 600;
}

.solution-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ========== 首页资讯网格 ========== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
    margin-top: 40px;
}

.news-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--duration) var(--ease-out);
    border: 1px solid var(--border-light);
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-alpha);
}

.news-image img {
    width: 100%;
    height: 210px;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--ease-out);
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-content {
    padding: 24px;
}

.news-date {
    color: var(--primary-light);
    font-size: 0.88rem;
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.news-card .news-content h4 {
    color: var(--text);
    margin: 8px 0 14px;
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.4;
    transition: color var(--duration) var(--ease-out);
}

.news-card:hover .news-content h4 {
    color: var(--primary);
}

.news-card .news-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
    font-size: 0.95rem;
}

.read-more {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--duration) var(--ease-out);
}

.read-more:hover {
    color: var(--primary);
    gap: 10px;
}

/* ========== 首页公司简介 ========== */
.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    align-items: center;
}

.about-text.full-width {
    width: 100%;
}

.about-text h3 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 1.8rem;
    font-weight: 700;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;
}

/* ========== 统计数据 ========== */
.stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 36px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: 28px 24px;
    background: linear-gradient(145deg, rgba(12, 79, 150, 0.04), rgba(59, 130, 246, 0.04));
    border-radius: var(--radius-md);
    transition: all var(--duration) var(--ease-out);
    min-width: 140px;
    border: 1px solid var(--border-light);
}

.stat-item:hover {
    transform: translateY(-4px);
    background: linear-gradient(145deg, rgba(12, 79, 150, 0.08), rgba(59, 130, 246, 0.08));
    box-shadow: var(--shadow-md);
    border-color: var(--primary-alpha);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary);
    display: block;
    line-height: 1.2;
    margin-bottom: 8px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text);
    font-size: 1rem;
    font-weight: 600;
    opacity: 0.85;
    letter-spacing: 0.5px;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .hero-content h2 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .hero {
        height: auto;
        min-height: 0;
        padding: 120px 0 80px;
    }

    .hero-content h2 {
        font-size: 2.2rem;
    }

    .hero .hero-content p {
        font-size: 1.05rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 12px;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }

    .stats {
        gap: 20px;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    .stat-label {
        font-size: 0.9rem;
    }

    .about-text h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .stats {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

    .stat-item {
        width: 100%;
        max-width: 240px;
    }

    .stat-number {
        font-size: 2.4rem;
    }

    .hero-content h2 {
        font-size: 1.8rem;
    }

    .hero .hero-content p {
        font-size: 0.95rem;
    }

    .solutions-grid {
        grid-template-columns: 1fr;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }
}