.hero-section {
    padding: 40px 0 24px 0;
}

.hero-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.hero-left {
    flex: 0 0 55%;
    max-width: 55%;
}

.hero-text-block {
    margin-bottom: 16px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: #111;
    margin-bottom: 10px;
    letter-spacing: 3px;
}
.hero-accent {
    color: #2563eb;
}

.hero-subtitle {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    line-height: 1.5;
}

.hero-intro {
    margin-top: 14px;
}

.hero-intro p {
    font-size: 15px;
    color: #444;
    font-weight: 500;
    line-height: 1.7;
    margin-bottom: 8px;
}

.hero-intro p:last-child {
    margin-bottom: 0;
}

.hero-right-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image {
    width: 100%;
    max-width: 480px;
    height: auto;
    object-fit: contain;
}

/* ==========================================================================
   2. 数据概览区 (Data Overview) - 流程图拆解布局版
   ========================================================================== */
.data-overview-section {
    padding: 40px 0 60px 0;
}

.overview-layout-v2 {
    display: grid;
    grid-template-columns: 280px 1fr 280px; /* 左右定宽，中间自适应填满 */
    gap: 24px;
    align-items: stretch;
}

.overview-side-col {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 左右两侧的基础卡片 */
.overview-card-v2 {
    background: #ffffff;
    border: 1px solid #eef0f3;
    border-radius: 12px;
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 18px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    flex: 1; /* 撑满高度 */
}

.overview-card-v2:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border-color: #dce1e8;
}

.card-v2-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-cancer { background: #fef2f2; color: #dc2626; }
.icon-celltype { background: #f0fdf4; color: #16a34a; }
.icon-cells { background: #faf5ff; color: #9333ea; }
.icon-editing { background: #fff7ed; color: #ea580c; }

.card-v2-text {
    display: flex;
    flex-direction: column;
}

.card-v2-num {
    font-size: 28px;
    font-weight: 800;
    color: #1a1b1d;
    line-height: 1.1;
    margin-bottom: 4px;
}

.card-v2-label {
    font-size: 14px;
    font-weight: 600;
    color: #64748b;
}

/* ==============================================
   中间列：复杂的样本拆解流程图面板
   ============================================== */
.overview-center-col {
    background: #ffffff;
    border: 1px solid #eef0f3;
    border-radius: 12px;
    padding: 24px 30px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.3s ease;
}

.overview-center-col:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border-color: #dce1e8;
}

.center-header {
    margin-bottom: 24px;
    display: flex;
    align-items: baseline;
    gap: 8px;
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 12px;
}

.center-header .stat-num {
    font-size: 28px;
    font-weight: 800;
    color: #1a1b1d;
}

.center-header .stat-label {
    font-size: 16px;
    font-weight: 600;
    color: #64748b;
}

.sample-rows {
    display: flex;
    flex-direction: column;
    gap: 22px;
    flex: 1;
    justify-content: center;
}

.s-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sr-icon { font-size: 32px; display: flex; align-items: center; justify-content: center; width: 40px;}
.sr-arrow { font-size: 20px; opacity: 0.6; }

/* 纯 CSS 绘制的序列图容器 */
.sr-diagram { width: 150px; height: 36px; position: relative; }

.sr-badge {
    font-size: 13px;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 20px;
    width: 85px;
    text-align: center;
}

.sr-text {
    font-size: 14px;
    color: #64748b;
    font-weight: 500;
    width: 100px;
    text-align: right;
}
.sr-text strong { color: #1e293b; font-size: 18px; font-weight: 800; }

/* 3种数据类型的配色体系 */
.row-blue .sr-icon { color: #3b82f6; }
.row-blue .sr-arrow { color: #3b82f6; }
.row-blue .sr-badge { background: #eff6ff; color: #2563eb; }

.row-orange .sr-icon { color: #f59e0b; }
.row-orange .sr-arrow { color: #f59e0b; }
.row-orange .sr-badge { background: #fffbeb; color: #d97706; }

.row-red .sr-icon { color: #ef4444; }
.row-red .sr-arrow { color: #ef4444; }
.row-red .sr-badge { background: #fef2f2; color: #dc2626; }

/* -------------------------------------
   纯 CSS 画的基因读取序列 (无损放大)
   ------------------------------------- */
.css-read { position: absolute; border-radius: 4px; }

/* 1. 蓝色短读长 (scSR) */
.blue-r1 { top: 2px; left: 0; width: 35px; height: 6px; background: #93c5fd; }
.blue-r2 { top: 12px; left: 20px; width: 50px; height: 6px; background: #3b82f6; }
.blue-r3 { top: 22px; left: 10px; width: 40px; height: 6px; background: #60a5fa; }
.blue-r4 { top: 6px; left: 65px; width: 45px; height: 6px; background: #2563eb; }
.blue-r5 { top: 18px; left: 85px; width: 50px; height: 6px; background: #93c5fd; }
.blue-r6 { top: 28px; left: 60px; width: 35px; height: 6px; background: #3b82f6; }

/* 2. 橙色单细胞长读长 (scLR) */
.or-r1-left { top: 6px; left: 0; width: 50px; height: 8px; background: #f59e0b; }
.or-r1-right { top: 6px; left: 95px; width: 50px; height: 8px; background: #f59e0b; }
.or-r1-line { top: 9px; left: 50px; width: 45px; height: 2px; background: #cbd5e1; border-radius:0;}

.or-r2-left { top: 22px; left: 10px; width: 45px; height: 8px; background: #fbbf24; }
.or-r2-right { top: 22px; left: 100px; width: 45px; height: 8px; background: #fbbf24; }
.or-r2-line { top: 25px; left: 55px; width: 45px; height: 2px; background: #cbd5e1; border-radius:0;}

/* 3. 红色 Bulk 长读长 (Bulk LR) */
.red-r1-left { top: 6px; left: 5px; width: 55px; height: 8px; background: #ef4444; }
.red-r1-right { top: 6px; left: 95px; width: 50px; height: 8px; background: #ef4444; }
.red-r1-line { top: 9px; left: 60px; width: 35px; height: 2px; background: #cbd5e1; border-radius:0;}

.red-r2-left { top: 22px; left: 0px; width: 50px; height: 8px; background: #f87171; }
.red-r2-right { top: 22px; left: 90px; width: 55px; height: 8px; background: #f87171; }
.red-r2-line { top: 25px; left: 50px; width: 40px; height: 2px; background: #cbd5e1; border-radius:0;}

.tools-section {
    padding: 24px 0 60px 0;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.module-card {
    background: #ffffff;
    border: 1px solid #e1e4e8;
    border-radius: 10px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.module-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
    border-color: #c5d0e6;
}

.card-cover {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 10px 10px 0 0;
    background-color: #f4f5f8;
}

.card-cover img {
    width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: contain;
    object-position: center;
    display: block;
    transition: transform 0.3s ease;
}

.card-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(44, 62, 80, 0.85);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 25px;
    text-align: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card-overlay p {
    margin: 0;
    font-size: 15px;
    line-height: 1.6;
    transform: translateY(15px);
    transition: transform 0.3s ease;
}

.module-card:hover .card-overlay {
    opacity: 1;
}

.module-card:hover .card-overlay p {
    transform: translateY(0);
}

.module-card:hover .card-cover img {
    transform: scale(1.05);
}

.card-body {
    padding: 16px 20px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: none;
}

.card-body h3 {
    margin: 0;
    font-size: 16px;
    color: var(--color-text);
    font-weight: 600;
    text-align: center;
}

@media (max-width: 1150px) {
    .overview-layout-v2 {
        grid-template-columns: 1fr; /* 屏幕变小时，改为单列排列 */
    }
    .overview-side-col {
        flex-direction: row; /* 侧边栏的卡片变成水平排列 */
    }
    .module-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .hero-wrapper {
        flex-direction: column;
        gap: 30px;
    }
    .hero-left {
        flex: 1;
        max-width: 100%;
    }
    .hero-image {
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .overview-side-col {
        flex-direction: column;
    }
    .s-row {
        flex-wrap: wrap; /* 手机端允许换行 */
        justify-content: center;
        gap: 12px;
    }
    .sr-diagram {
        display: none; /* 手机端屏幕太小，隐藏比对图 */
    }
    .sr-text {
        text-align: center;
    }
    .module-grid {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 32px;
    }
    .hero-subtitle {
        font-size: 17px;
    }
}

.hero-action {
    display: flex;
    align-items: center;
}

.btn-explore {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 15px 36px;
    background: var(--color-primary);
    color: #ffffff;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;

    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.35);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-explore:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(52, 152, 219, 0.45);
    color: #ffffff;
}

.btn-explore i {
    font-size: 16px;
    transition: transform 0.3s ease;
}

.btn-explore:hover i {
    transform: translateX(5px);
}

/* 350 18突出 */
.overview-card-sub {
    font-size: 11px;
    color: #888;
    margin-top: 4px;
    line-height: 1.4;
}

/* 新增：突出显示数字的样式 */
.overview-card-sub .highlight-num {
    color: #2563eb;       /* 使用与你主页标题相同的科技蓝色 */
    font-weight: 800;     /* 字体加粗 */
    font-size: 13px;      /* 字体稍微放大一点点 */
    margin: 0 2px;        /* 左右稍微留出一点间隙 */
}

/* 强制图标显示：解决图标不出来的问题 */
.overview-card i {
    display: inline-block !important;
    font-family: "Font Awesome 6 Free" !important;
    font-weight: 900 !important;
    font-style: normal !important;
    font-variant: normal !important;
    text-rendering: auto !important;
    -webkit-font-smoothing: antialiased !important;
}