#page {
    background: rgba(246, 249, 255, 1);
}

#company-introduction {
    padding-top: 80px;
    padding-bottom: 80px;
}

.intro-card-wrap {
    position: relative;
    margin: 0 auto;
}

.intro-card {
    background: linear-gradient(180deg, rgba(171, 214, 255, 0.2) 8.94%, rgba(242, 251, 255, 0) 75.69%, rgba(171, 227, 255, 0.2) 122.91%);
    box-shadow: 0px 4px 32px rgba(0, 0, 0, 0.06);
    border-radius: 40px;
    padding: 60px 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background-image: url(../images/home/02-company-introduction/bg.png);
    background-size: cover;
    background-position: center;
}

.intro-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 140%;
    height: 140%;
    background: radial-gradient(circle at center, rgba(18, 84, 252, 0.05) 0%, transparent 70%);
    z-index: 0;
}

.intro-content-inner {
    position: relative;
    z-index: 1;
}

.intro-title {
    font-size: 36px;
    font-weight: 700;
    color: #1254FC;
    margin-bottom: 30px;
    letter-spacing: 1px;
}

.intro-descriptions {
    margin-bottom: 50px;
}

.intro-descriptions p {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
    text-align: justify;
    text-justify: inter-word;
    text-indent: 2em;
}

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

.intro-stats-row {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 48px;
    font-weight: 800;
    color: #1254FC;
    line-height: 1;
    margin-bottom: 10px;
    display: block;
}

.stat-label {
    font-size: 14px;
    color: #888;
    letter-spacing: 1px;
}

@media (max-width: 991px) {
    .intro-card {
        padding: 40px;
    }

    .intro-title {
        font-size: 28px;
    }

    .intro-stats-row {
        flex-direction: column;
        gap: 30px;
    }
}

/* Business Models */
.business-model-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 40px auto 80px;
    padding: 0 20px;
}

.business-model--item {
    background: #fff;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(18, 84, 252, 0.05);
    transition: transform 0.3s ease;
    position: relative;
}

.business-model--item:hover {
    transform: translateY(-5px);
}

.quote-icon {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 30px;
    color: rgba(18, 84, 252, 0.05);
}

.item-title {
    font-size: 22px;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
}

.dividing-line {
    width: 40px;
    height: 4px;
    background: #1254FC;
    margin-bottom: 20px;
    border-radius: 2px;
}

.item-content {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* Marketing Chain */
.marketing-chain-wrap {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    border-radius: 30px;
    min-height: 480px;
}

.chain-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.chain-bg img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: fill;
    /* Match the stretched SVG behavior if needed, or use cover */
    border-radius: 30px;
}

.chain-sidebar {
    width: 20%;
    padding: 60px 20px 30px;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

/* Vertical connector line */
.chain-sidebar::before {
    content: '';
    position: absolute;
    top: 130px;
    /* Start below '电商场景' */
    bottom: 120px;
    /* End above '营销全链路' */
    left: 25px;
    /* Alignment with first letter roughly */
    width: 1px;
    border-left: 2px dotted rgba(255, 255, 255, 0.4);
    z-index: 0;
}

.sidebar-top p {
    font-size: 16px;
    margin: 0;
    opacity: 0.9;
    font-weight: 500;
    letter-spacing: 2px;
}

.sidebar-bottom {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
    margin-top: auto;
    padding-bottom: 20px;
}

.chain-main {
    flex: 1;
    padding: 80px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.chain-row {
    display: flex;
    justify-content: center;
    gap: 40px;
    width: 100%;
}

/* Connectors */
.chain-step {
    position: relative;
    z-index: 1;
    text-align: center;
    width: 140px;
    /* Fixed width to ensure rows have different logical width */
}

.chain-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 30px;
    left: 80%;
    width: 100px;
    /* Bridge the gap */
    height: 1px;
    border-top: 2px dotted rgba(179, 210, 255, 1);
    z-index: 0;
}

/* Ensure children in the last item of bottom row don't show if missing, 
   but since we have 4 items in a 5-column grid, it naturally works. */

/* Ensure numbers and titles are centered */
.step-no {
    font-size: 32px;
    font-weight: 800;
    color: #1254FC;
    margin-bottom: 15px;
    position: relative;
    z-index: 2;
    background: transparent;
    display: inline-block;
    padding: 0 10px;
    /* Space for the dotted line */
}

.step-title {
    font-size: 18px;
    font-weight: 700;
    color: #333;
    margin-bottom: 8px;
    width: 100%;
}

.step-tag {
    font-size: 12px;
    color: #1254FC;
    background: rgba(18, 84, 252, 0.08);
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
}

@media (max-width: 1199px) {
    .business-model-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 991px) {
    .marketing-chain-wrap {
        flex-direction: column;
        background: linear-gradient(135deg, #1254FC 0%, #4facfe 100%);
        padding: 0;
        overflow: hidden;
    }

    .chain-bg {
        display: none;
        /* Hide complex SVG on mobile for performance and better layout */
    }

    .chain-sidebar {
        width: 100%;
        padding: 40px;
        flex-direction: row;
        align-items: center;
        background: transparent;
    }

    .sidebar-bottom {
        font-size: 24px;
        margin-top: 0;
        padding-bottom: 0;
    }

    .chain-main {
        padding: 40px 20px;
        background: #fff;
        border-radius: 30px 30px 0 0;
        display: flex;
        flex-direction: column;
        gap: 30px;
    }

    .chain-row {
        display: flex;
        flex-direction: column;
        gap: 25px;
        align-items: center;
        /* Center-align steps on mobile */
    }

    .chain-step {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 575px) {
    .business-model-grid {
        grid-template-columns: 1fr;
    }

    .chain-step {
        flex: 1 1 100%;
    }
}