.article3 {
    position: relative;
}

.a3-square {
    position: absolute;
    top: 0; right: 0;
    width: 30%;
    height: 360px;
    background-color: var(--main-color);
    z-index: 1;
}

.a3-truck {
    position: absolute;
    top: 200px; right: 1px;
    height: 170px;
    z-index: 2;
}

.a3-title {
    width: 100%;
    margin-top: 7rem;
}

.a3-title p {
    color: var(--main-color);
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 1rem;
}

.a3-title h1 {
    color: #222;
    font-size: 65px;
    line-height: 1.25;
    font-weight: 700;
}

.a3-title h1 br {
    display: none;
}

.a3-box-wrapper {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 5rem;
    margin-top: 30px;
}

.a3-box-group {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
}

.a3-box-group::after {
    height: 2px;
    background-color: var(--main-color);
    opacity: .2;
    z-index: 1;
}

.a3-box-group:nth-child(1):after {
    content: '';
    position: absolute;
    top: 50%; left: -60%;
    width: 160%;
}

.a3-box-group:nth-child(2):after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
}

.a3-box-group:nth-child(3):after {
    content: '';
    position: absolute;
    top: 50%; right: -60%;
    width: 160%;
}

.a3-box-group:nth-child(2) .a3-box:nth-child(1) {
    grid-row: 1 / 2;
    grid-column: 4 / 5;
}
.a3-box-group:nth-child(2) .a3-box:nth-child(2) {
    grid-row: 1 / 2;
    grid-column: 3 / 4;
}
.a3-box-group:nth-child(2) .a3-box:nth-child(3) {
    grid-row: 1 / 2;
    grid-column: 2 / 3;
}
.a3-box-group:nth-child(2) .a3-box:nth-child(4) {
    grid-row: 1 / 2;
    grid-column: 1 / 2;
}

.a3-box {
	/*overflow: hidden;*/
    position: relative;
    padding: 40px;
    border-radius: 8px;
    background-color: #f8f8f8;
    box-shadow: inset 0 0 2px 0 rgb(0 0 0 / 10%);
    transition: all .3s ease;
    z-index: 2;
}

.a3-box.on {
    background-color: var(--main-color);
}

.a3-box.on h1 {
    color: #fff;
}

.a3-box.on ul li {
    color: #ccc;
}

.a3-box:nth-child(4)::after {
    content: '';
    position: absolute;
    top: 215px; 
	right: 50%;
    width: 2px;
    height: 53px;
    background-color: var(--main-color);
    opacity: .2;
}

.a3-box-last::after {
    opacity: 0;
    visibility: hidden;
}

.a3-box-num {
    position: absolute;
    top: 0px; 
	left: 40px;
    padding: 4px 8px;
    border-radius: 0px 0px 5px 5px;
    background-color: #272c8c;
    box-shadow: 0 5px 5px 0 rgba(0, 0, 0, .2);
}

.a3-box-num p {
    color: #fafafa;
    font-size: 15px;
    font-weight: 600;
	margin: 0;
}

.a3-box.on .a3-box-num {
    background-color: var(--sub-color);
}

.a3-box.on .a3-box-num p {
    color: #222;
    font-weight: 700;
}

.a3-box h1 {
	font-weight: bold;
    color: #000;
    font-size: 24px;
}

.a3-box h1 span {
    color: rgba(0, 0, 0, .4);
}

.a3-box ul {
    padding-left: 10px;
    margin-top: .7rem;
}

.a3-box ul li {
	position: relative;
    color: rgba(0, 0, 0, .4);
    font-size: 17px;
    font-weight: 500;
    line-height: 1.5;
	padding-left: 15px;
    /*list-style: circle;*/
}

.a3-box ul li::before {
	position: absolute;
	top: 0;
	left: 0;
	content: '-';
	display: block;
}


/*==================================================*/
@media (max-width: 1750px) {
    .a3-truck {
        display: none;
    }
}


@media (max-width: 1250px) {
    .a3-box-group {
        gap: 1rem;
    }
}


@media (max-width: 1050px) {
    .a3-title p {
        font-size: 24px;
    }

    .a3-title h1 {
        font-size: 45px;
    }

    .a3-box-wrapper {
        gap: 2rem;
    }

    .a3-box-group {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .a3-box-group:nth-child(2) .a3-box {
        grid-row: unset !important;
        grid-column: unset !important;
    }
    
    .a3-box-group::after,
    .a3-box:nth-child(4)::after {
        display: none;
    }

    .a3-box {
        height: 200px;
    }
}

@media (max-width: 991px) {
	.a3-box-wrapper {
		margin-top: 10px;
	}
}

@media (max-width: 850px) {
    .a3-square {
        width: 60px;
        height: 220px;
    }

    .a3-title {
        margin-top: 3rem;
    }
}


@media (max-width: 650px) {
    .a3-title p {
        font-size: 20px;
    }

    .a3-title h1 {
        font-size: 35px;
    }
}


@media (max-width: 550px) {
    .a3-box-group {
        gap: 2rem 1rem;
    }
        
    .a3-box {
        padding: 30px;
        height: 160px;
    }

    .a3-box-num {
        left: 30px;
    }

    .a3-box-num p {
        font-size: 12px;
    }
    
    .a3-box h1 {
        font-size: 18px;
    }

    .a3-box ul li {
        font-size: 13px;
    }
}


@media (max-width: 450px) {   
    .a3-square {
        width: 100px;
        height: 170px;
    }
    
    .a3-truck {
        display: block;
        top: 70px; right: -40px;
        height: 100px;
        z-index: 1;
    }
    
    .a3-title {
        z-index: 2;
    }
    
    .a3-title h1 br {
        display: block;
    }
    
	/*
    .a3-box-wrapper {
        margin-top: 4rem;
    }
    */

    .a3-box {
        /*height: 120px;*/
        padding: 20px;
        padding-top: 25px;
    }

    .a3-box-num {
        left: 20px;
    }

    .a3-box-num p {
        font-size: 10px;
    }

    .a3-box h1 {
        font-size: 15px;
    }

    .a3-box ul {
        padding-left: 14px;
    }

    .a3-box ul li {
        font-size: 12px;
    }
}