/* ========== 全局重置 & 基础 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #FFFFFF;
    color: #1A1A1A;
    line-height: 1.5;
    scroll-behavior: smooth;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ========== 导航栏（全宽边框） ========== */
.nav-wrapper {
    width: 100%;
    background-color: #FFFFFF;
    border-bottom: 1px solid #EAEAEA;
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    flex-wrap: wrap;
    gap: 20px;
}
.logo .cn-name {
    font-size: 1.6rem;
    font-weight: 700;
    color: #1A1A1A;
    letter-spacing: -0.3px;
}
.logo .en-name {
    font-size: 0.7rem;
    color: #666;
    margin-top: 4px;
}
.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: 0.2s;
    font-size: 0.95rem;
}
.nav-links a:hover,
.nav-links a.active {
    color: #0066CC;
}

/* ========== 按钮 ========== */
.btn-module {
    display: inline-block;
    background: #0066CC;
    color: white;
    padding: 10px 24px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 500;
    transition: 0.2s;
}
.btn-module:hover {
    background: #0052A3;
}

/* ========== 卡片通用样式 ========== */
.service-card {
    border: 1px solid #E0E0E0;
    border-radius: 24px;
    padding: 32px;
    background: white;
    transition: 0.2s;
}
.service-card:hover {
    transform: translateY(-4px);
    border-color: #0066CC;
    box-shadow: 0 12px 24px rgba(0,102,204,0.08);
}
.card-icon {
    font-size: 2.5rem;
    color: #0066CC;
    margin-bottom: 20px;
}
.service-card h3 {
    font-size: 1.6rem;
    margin-bottom: 12px;
}
.service-card p {
    color: #555;
    margin-bottom: 24px;
    line-height: 1.5;
}

/* ========== 主内容容器（科技浅灰背景） ========== */
.main-wrapper {
    background: linear-gradient(135deg, #F8F9FA 0%, #F0F2F5 100%);
    padding: 2rem 0;
    margin-top: 0;
    margin-bottom: 0;
}
.main-wrapper > section:first-child {
    padding-top: 2rem;
}

/* ========== 页脚 ========== */
footer {
    background: #1A1A1A;
    color: #999;
    padding: 60px 0 30px;
    margin-top: 40px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-about p {
    margin-top: 16px;
    font-size: 0.85rem;
}
.footer-links h4 {
    color: white;
    margin-bottom: 20px;
    font-size: 1rem;
}
.footer-links ul {
    list-style: none;
}
.footer-links li {
    margin-bottom: 12px;
}
.footer-links a {
    color: #999;
    text-decoration: none;
    font-size: 0.85rem;
    transition: 0.2s;
}
.footer-links a:hover {
    color: white;
}
.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
    font-size: 0.8rem;
}
.social-links {
    display: flex;
    gap: 16px;
    margin-top: 20px;
}
.social-links a {
    color: #999;
    font-size: 1.4rem;
    transition: 0.2s;
}
.social-links a:hover {
    color: white;
}

/* ========== Hero 与图文模块比例（文字2份，图片1份） ========== */
.hero .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}
.grid-2col {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 48px;
    align-items: center;
}

/* ========== 应用场景显式布局（强制生效） ========== */
.scenario-list {
    display: flex;
    flex-direction: column;
    gap: 48px;
}
.scenario-list .grid-2col.image-left {
    display: grid !important;
    grid-template-columns: 1fr 2fr !important;
    direction: rtl !important;
    gap: 48px !important;
    align-items: center !important;
}
.scenario-list .grid-2col.image-left > div {
    direction: ltr !important;
}
.scenario-list .grid-2col.image-right {
    display: grid !important;
    grid-template-columns: 2fr 1fr !important;
    direction: ltr !important;
    gap: 48px !important;
    align-items: center !important;
}

/* ========== 图文靠上对齐 ========== */
.hero-text,
.grid-2col > div:first-child,
.scenario-list .grid-2col.image-left > div:last-child {
    align-self: start;
    padding-top: 1rem;
}

/* ========== 详情页特有样式 ========== */
.hero {
    padding: 60px 0;
    background: #F8F9FA;
    margin-bottom: 20px;
}
.hero-text h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.hero-text p {
    color: #555;
    margin-bottom: 24px;
    line-height: 1.6;
}
.hero-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}
.hero-stats span {
    background: #E6F0FF;
    padding: 6px 14px;
    border-radius: 30px;
    font-weight: 500;
    font-size: 0.9rem;
}
.hero-media {
    background: #E0E8F0;
    border-radius: 24px;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-media img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.page-nav {
    background: white;
    border-bottom: 1px solid #EAEAEA;
    position: sticky;
    top: 0;
    z-index: 100;
}
.page-nav ul {
    display: flex;
    gap: 32px;
    list-style: none;
    padding: 16px 0;
    overflow-x: auto;
}
.page-nav a {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    white-space: nowrap;
}
.page-nav a:hover {
    color: #0066CC;
}
.section-block {
    padding: 80px 0;
    border-bottom: 1px solid #F0F0F0;
}
.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}
.feature-list {
    list-style: none;
}
.feature-list li {
    margin-bottom: 24px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}
.feature-list i {
    color: #0066CC;
    font-size: 1.2rem;
    margin-top: 4px;
}
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 32px;
}
.card {
    background: #F8F9FA;
    border-radius: 24px;
    padding: 32px;
    transition: 0.2s;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.05);
}
.card i {
    font-size: 2rem;
    color: #0066CC;
    margin-bottom: 20px;
}
.card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}
.card p {
    color: #555;
    line-height: 1.5;
}
.cta-block {
    background: #0066CC;
    color: white;
    text-align: center;
    padding: 60px 0;
    border-radius: 32px;
    margin: 40px 0;
}
.cta-block .btn-white {
    background: white;
    color: #0066CC;
    padding: 12px 28px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    margin-top: 20px;
}

/* ========== 返回顶部按钮 ========== */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background-color: rgba(0, 102, 204, 0.8);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 999;
    font-size: 1.2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
}
#backToTop:hover {
    background-color: #0066CC;
    transform: scale(1.05);
}

/* ========== 响应式（移动端） ========== */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    .navbar {
        flex-direction: column;
        text-align: center;
    }
    .nav-links {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    #backToTop {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    .hero .container,
    .grid-2col,
    .scenario-list .grid-2col.image-left,
    .scenario-list .grid-2col.image-right {
        grid-template-columns: 1fr !important;
        direction: ltr !important;
    }
    .hero-text,
    .grid-2col > div:first-child,
    .scenario-list .grid-2col.image-left > div:last-child {
        align-self: auto;
        padding-top: 0;
    }
    .main-wrapper {
        padding: 1rem 0;
    }
    .hero {
        padding: 40px 0;
    }
    .hero-text h1 {
        font-size: 2rem;
    }
    .section-block {
        padding: 50px 0;
    }
    .section-title {
        font-size: 1.6rem;
    }
    .card-grid {
        gap: 20px;
    }
    .card {
        padding: 24px;
    }
}

/* 强制覆盖场景布局 - 使用绝对可靠的方法 */
        .scenario-container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
        }
        .scenario-item {
            display: flex !important;
            flex-direction: row !important;
            flex-wrap: nowrap !important;
            justify-content: space-between !important;
            align-items: center !important;
            gap: 48px !important;
            width: 100% !important;
            margin-bottom: 48px !important;
        }
        /* 图片列和文字列的比例 1:2 */
        .scenario-item .image-col {
            flex: 1 !important;
            width: auto !important;
        }
        .scenario-item .text-col {
            flex: 2 !important;
            width: auto !important;
        }
        /* 左图右文：图片在前 */
        .scenario-item.image-left {
            flex-direction: row !important;
        }
        /* 左文右图：文字在前（通过 order 交换顺序） */
        .scenario-item.image-right .image-col {
            order: 2 !important;
        }
        .scenario-item.image-right .text-col {
            order: 1 !important;
        }
        /* 移动端恢复垂直排列 */
        @media (max-width: 768px) {
            .scenario-item {
                flex-direction: column !important;
                gap: 24px !important;
            }
            .scenario-item .image-col,
            .scenario-item .text-col {
                flex: auto !important;
                width: 100% !important;
                order: unset !important;
            }
        }
        /* 确保图片自适应 */
        .scenario-item img {
            width: 100%;
            height: auto;
            border-radius: 16px;
            display: block;
        }