.biz-header {
    text-align: center;
    margin-bottom: 80px;
}

.biz-title {
    font-size: 42px;
    font-weight: 800;
    color: #111;
    letter-spacing: -1.5px;
    margin-bottom: 20px;
}

.biz-subtitle {
    font-size: 18px;
    color: #666;
    line-height: 1.6;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.intro-card {
    background: #f8f9fa;
    border-radius: 24px;
    padding: 50px;
    border: 1px solid #eaeaea;
    transition: all 0.3s;
}

.intro-card:hover {
    background: #fff;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
    border-color: var(--point-color);
}

.intro-card h4 {
    font-size: 24px;
    font-weight: 700;
    color: #111;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid #111;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.intro-card h4 i {
    color: var(--point-color);
    font-size: 28px;
}

.intro-card p {
    font-size: 17px;
    color: #444;
    line-height: 1.8;
    word-break: keep-all;
    margin-bottom: 15px;
}

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

.feature-list-section {
    background: #fff;
    border-radius: 24px;
    padding: 50px;
    border: 1px solid #eaeaea;
    margin-bottom: 80px;
}

.feature-list-title {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-list-title i {
    color: var(--point-color);
    font-size: 32px;
}

.feature-bullet-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.feature-bullet-list li {
    position: relative;
    font-size: 17px;
    color: #333;
    line-height: 1.6;
    background: #f8f9fa;
    padding: 25px 30px 25px 60px;
    border-radius: 15px;
    border: 1px solid #eaeaea;
    word-break: keep-all;
}

.feature-bullet-list li i {
    position: absolute;
    left: 25px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--point-color);
    font-size: 22px;
}

.integration-section {
    border-radius: 30px;
    padding: 80px 60px;
    border: 1px solid #eaeaea;
}

.integration-title {
    text-align: center;
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 50px;
}

.integration-title span {
    display: block;
    font-size: 20px;
    color: #666;
    font-weight: 600;
    margin-top: 10px;
}

.integration-image {
    text-align: center;
}

.integration-image img {
    max-width: 1000px;
    width: 100%;
    border-radius: 20px;
}

@media (max-width: 1024px) {
    .intro-grid {
        grid-template-columns: 1fr;
    }
    .feature-bullet-list {
        grid-template-columns: 1fr;
    }
    .integration-section {
        padding: 50px 30px;
    }
}