/* ================================================
   Business Section
   ================================================ */
.biz-overview-intro {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 60px;
}

.biz-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.biz-card {
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.biz-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

.biz-card-img {
    height: 220px;
    background-size: cover;
    background-position: center;
}

.biz-card-body {
    padding: 28px;
}

.biz-card-num {
    font-size: 48px;
    font-weight: 700;
    color: rgba(45, 90, 39, 0.1);
    line-height: 1;
    margin-bottom: 12px;
}

.biz-card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.biz-card-desc {
    font-size: 14px;
    color: var(--text-mid);
    line-height: 1.7;
    margin-bottom: 16px;
}

.biz-card-list {
    list-style: none;
    padding: 0;
    margin-bottom: 24px;
}

.biz-card-list li {
    font-size: 13px;
    color: var(--text-mid);
    padding: 4px 0 4px 16px;
    position: relative;
}

.biz-card-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.biz-card-btn {
    display: inline-block;
    padding: 10px 24px;
    background: var(--primary);
    color: #fff;
    font-size: 13px;
    border-radius: 2px;
    transition: background 0.2s;
}

.biz-card-btn:hover {
    background: var(--primary-dark);
    color: #fff;
}

.biz-detail-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
    margin-bottom: 80px;
}

.biz-detail-reverse {
    direction: rtl;
}

.biz-detail-reverse > * {
    direction: ltr;
}

.biz-detail-img {
    height: 400px;
    border-radius: 4px;
    background-size: cover;
    background-position: center;
}

.biz-detail-video-wrap {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    border-radius: 4px;
    overflow: hidden;
    background: #000;
}

.biz-detail-video-wrap iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.biz-detail-img-1 {
    background: linear-gradient(135deg, #060f1e, #1a3a6e);
}

.biz-detail-img-2 {
    background: linear-gradient(135deg, #0d2137, #060f1e);
}

.biz-detail-img-3 {
    background: linear-gradient(135deg, #1a1a2e, #c9a227);
}

.biz-detail-img-4 {
    background: linear-gradient(135deg, #1a3a6e, #060f1e);
}

.biz-detail-img-5 {
    background: linear-gradient(135deg, #0d2137, #c9a227);
}

.biz-detail-tag {
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--primary);
    display: block;
    margin-bottom: 16px;
    font-weight: 600;
}

.biz-detail-text p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-mid);
    margin-bottom: 16px;
}

.product-section,
.cert-section,
.process-section,
.case-section,
.overseas-section {
    margin-bottom: 80px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    padding: 36px 28px;
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: border-color 0.3s, transform 0.3s;
}

.product-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.product-icon {
    width: 56px;
    height: 56px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 20px;
}

.product-card h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.product-card p {
    font-size: 14px;
    color: var(--text-mid);
    line-height: 1.7;
    margin-bottom: 16px;
}

.product-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.product-card ul li {
    font-size: 13px;
    color: var(--text-mid);
    padding: 4px 0 4px 16px;
    position: relative;
    border-bottom: 1px dotted var(--border);
}

.product-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 11px;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.cert-item {
    text-align: center;
    padding: 36px 20px;
    border: 1px solid var(--border);
    border-radius: 4px;
}

.cert-item i {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 16px;
    display: block;
}

.cert-item p {
    font-size: 14px;
    color: var(--text-mid);
    margin: 0;
    font-weight: 500;
}

.process-flow {
    display: flex;
    align-items: center;
    gap: 0;
    overflow-x: auto;
    padding-bottom: 16px;
}

.process-step {
    flex: 1;
    min-width: 150px;
    text-align: center;
    padding: 32px 16px;
    background: var(--bg-light);
    border-radius: 4px;
}

.process-num {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 8px;
}

.process-icon {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 12px;
}

.process-step h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.process-step p {
    font-size: 12px;
    color: var(--text-light);
    margin: 0;
    line-height: 1.6;
}

.process-arrow {
    font-size: 18px;
    color: var(--border);
    padding: 0 8px;
    flex-shrink: 0;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.case-card {
    padding: 32px 20px;
    border: 1px solid var(--border);
    border-radius: 4px;
    text-align: center;
    transition: border-color 0.3s, transform 0.3s;
}

.case-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.case-icon {
    font-size: 36px;
    color: var(--primary);
    margin-bottom: 16px;
}

.case-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
}

.case-card p {
    font-size: 13px;
    color: var(--text-mid);
    line-height: 1.7;
    margin: 0;
}

.overseas-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.overseas-card {
    padding: 36px;
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: border-color 0.3s, transform 0.3s;
}

.overseas-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.overseas-flag {
    font-size: 40px;
    margin-bottom: 12px;
}

.overseas-card h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 6px;
}

.overseas-tag {
    font-size: 11px;
    color: var(--primary);
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 16px;
    font-weight: 600;
}

.overseas-card p {
    font-size: 14px;
    color: var(--text-mid);
    line-height: 1.7;
    margin-bottom: 16px;
}

.overseas-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.overseas-card ul li {
    font-size: 13px;
    color: var(--text-mid);
    padding: 4px 0 4px 16px;
    position: relative;
}

.overseas-card ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
}

@media (max-width: 1200px) {
    .biz-card-grid {
        grid-template-columns: 1fr 1fr;
    }

    .biz-detail-intro {
        grid-template-columns: 1fr;
    }

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

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

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

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

    .biz-slide {
        flex-direction: column;
    }

    .biz-img {
        width: 100%;
        height: 280px;
    }

    .biz-content {
        padding: 40px;
    }
}

@media (max-width: 768px) {
    .biz-card-grid {
        grid-template-columns: 1fr;
    }

    .process-flow {
        flex-direction: column;
    }

    .process-arrow {
        transform: rotate(90deg);
    }
}