.base-header {
    padding-top: 0;
}

.top-banner {
    position: relative;
    padding: 200px 0 160px;
    background: var(--color-primary-weak);
    color: var(--color-block-darker);
    text-align: center;
}

.top-banner::before,
.top-banner::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
}

.top-banner::before {
    top: 0;
    height: 702px;
    background: url(https://images.chatartpro.com/chatartweben/assets/support/banner-bg.svg) no-repeat center/100% 100%;
    z-index: 1;
}

.top-banner::after {
    top: 100%;
    height: 160px;
    background: linear-gradient(180deg, #E0E1FF 0%, #FFFFFF 100%);
    z-index: 0;
}

.top-banner .base-maxwidth {
    position: relative;
    z-index: 2;
}

.top-banner h1 {
    display: none;
}

.top-banner .title {
    font-size: 70px;
}

.top-banner .title span {
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-image: linear-gradient(90.33deg, #7E46FF 0.29%, #00B2CC 48.05%);
}

.content-container {
    position: relative;
    z-index: 3;
    padding: 45px 0 90px;
    color: var(--color-block-darker);
    background: url(https://images.chatartpro.com/chatartweben/assets/support/content-bg-right.svg) no-repeat 100% 1370px / 435px, url(https://images.chatartpro.com/chatartweben/assets/support/content-bg-left.svg) no-repeat 0 2900px / 480px;
}

.content-container .base-maxwidth {
    max-width: 1250px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.content-container .content-box {
    max-width: 760px;
    width: calc(100% - 320px);
}

.content-container .content-item {
    margin-bottom: 60px;
    padding-left: 60px;
}

.content-container .content-item:last-child {
    margin-bottom: 0;
}

.content-container .content-item h2 {
    font-size: 28px;
    margin-bottom: 40px;
    position: relative;
}

.content-container .content-item h2::before {
    content: '';
    position: absolute;
    top: 6px;
    left: -56px;
    width: 44px;
    height: 32px;
    background: url(https://images.chatartpro.com/chatartweben/assets/support/title-icon.svg) no-repeat center/100%;
}

.content-container .faq-item {
    margin-bottom: 40px;
}

.content-container .faq-item:last-child {
    margin-bottom: 0;
}

.content-container .faq-item.active h3::before{
    transform: rotate(-90deg);
}
.content-container .faq-item h3 {
    font-weight: 600;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.content-container .faq-item h3::before {
    content: " ";
    display: inline-block;
    min-width: 30px;
    height: 30px;
    background: url(https://images.chatartpro.com/chatartweben/assets/support/switch-icon.svg) no-repeat center/cover;
    cursor: pointer;
    margin-right: 20px;
    transition: transform .3s;
}

.content-container .faq-item .text {
    padding: 8px 10px 0 50px;
    line-height: 24px;
}

.content-container .faq-item a {
    color: var(--color-primary);
    font-weight: 500;
    word-break: break-all;
}

.content-container .color {
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 6px;
}

.content-container .list {
    display: block;
    margin-top: 6px;
}

.content-container .list li {
    font-size: 16px;
    line-height: 24px;
    margin-bottom: 6px;
}

.content-container .list strong {
    font-weight: 500;
}

.content-container .nav-box {
    position: relative;
    margin-left: 40px;
}

.content-container .nav-button {
    position: absolute;
    top: 12px;
    right: -40px;
    width: 40px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    border-radius: 0 4px 4px 0;
    color: var(--color-white-lighter);
    display: none;
}

.content-container .nav-box.open .nav-button {
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: rgba(104, 91, 255, 0.8);
    transform: rotate(90deg);
}

.content-container .nav-item {
    background: linear-gradient(360deg, #F7F7FF 49.83%, #C2BCFF 100%);
    width: 300px;
    border-radius: 16px;
    padding: 28px 36px;
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 1);
    box-shadow: 0px 0px 24px 0px rgba(0, 0, 0, 0.08);
}

.content-container .nav-item:last-child {
    margin-top: 80px;
    padding-left: 30px;
    padding-right: 30px;
}

.content-container .nav-item .title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 24px;
}

.content-container .nav-item .nav-list li {
    margin-bottom: 20px;
}

.content-container .nav-item .nav-list li:last-child {
    margin-bottom: 0;
}

.content-container .nav-item:last-child .nav-list {
   text-align: left;
}

.contact-us {
    position: relative;
    padding: 60px 0 320px;
    color: var(--color-block-darker);
}

.contact-us::before {
    content: '';
    position: absolute;
    bottom: -120px;
    left: 0;
    width: 100%;
    height: 1446px;
    background: url(https://images.chatartpro.com/chatartweben/assets/support/content-bg-bottom.svg) no-repeat center / 100% 100%;
}

.base-footer {
    position: relative;
}

.contact-us .base-maxwidth {
    position: relative;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    max-width: 1250px;
}

.contact-us .left {
    max-width: 530px;
    padding: 10px 20px 0 0;
    width: 50%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.contact-us .left > h3 {
    font-size: 36px;
    font-weight: 700;
}

.contact-us .left > p {
    font-size: 20px;
    font-weight: 600;
    margin: 40px 0 80px;
    letter-spacing: -0.02em;
}

.contact-us .left > .button {
    height: 44px;
    padding: 4px 32px;
    border-radius: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    color: var(--color-white-lighter);
    white-space: nowrap;
    background: var(--color-primary) url(https://images.chatartpro.com/chatartweben/assets/common/purple-arrow.svg) no-repeat 6px center / 28px 28px;
    transition: background .3s;
    letter-spacing: -0.02em;
}

.contact-us .left > .button span {
    transition: transform .3s;
    transform: translateX(10px);
}

.contact-us .left > .button:hover {
    background-position: calc(100% - 6px);
}

.contact-us .left > .button span {
    transition: transform .3s;
    transform: translateX(10px);
}

.contact-us .left > .button:hover span {
    transform: translateX(-10px);
}

.contact-us .right {
    max-width: 576px;
    width: 50%;
}

.contact-us .right img {
    border-radius: 24px;
    overflow: hidden;
}

@media (max-width: 1366px) {
    .top-banner::before {
        height: 500px;
    }

    .top-banner::after {
        height: 120px;
    }

    .contact-us {
        padding-bottom: 300px;
    }

    .contact-us::before {
        height: 1200px;
    }
}

@media (max-width: 1100px) {
    .top-banner {
        padding: 102px 0 60px;
    }

    .content-box .guide-button-list li {
        background: #F0EFFF;
        border: 2px solid var(--color-primary);
    }

    .content-container {
        background: none;
    }

    .contact-us {
        padding-bottom: 200px;
    }

    .contact-us::before {
        height: 678px;
    }
}


@media (max-width: 992px) {
    .top-banner::before {
        height: 300px;
    }

    .top-banner::after {
        height: 80px;
    }

    .top-banner .title {
        font-size: 24px;
    }

    .content-container {
        padding: 0;
    }

    .content-container .content-box {
        max-width: 100%;
        width: 100%;
    }

    .content-container .content-item {
        margin-bottom: 40px;
        padding-left: 0;
    }

    .content-container .content-item h2 {
        font-size: 20px;
        margin-bottom: 24px;
    }

    .content-container .content-item h2::before {
        content: none;
    }

    .content-container .faq-item {
        margin-bottom: 20px;
    }

    .content-container .nav-box {
        position: fixed;
        z-index: 5;
        top: 90px;
        margin: 0;
        right: 100%;
        transition: transform .3s;
        height: calc(100% - 160px);
        border-radius: 16px;
        border: 2px solid rgba(255, 255, 255, 1);
        box-shadow: 0px 0px 24px 0px rgba(0, 0, 0, 0.08);
        background: #fff;
    }

    .content-container .nav-content {
        background: var(--color-white-lighter) linear-gradient(360deg, #F7F7FF 49.83%, #C2BCFF 100%);
    }

    .content-container .scroll-wrap {
        overflow-y: auto;
        height: 100%;
        border-radius: 16px;
    }

    .content-container .nav-box.open {
        
        transform: translateX(100%);
    }

    .content-container .nav-button {
        display: flex;
    }

    .content-container .nav-box .menu-icon {
        display: block;
    }

    .content-container .nav-box .arrow-icon {
        display: none;
    }

    .content-container .nav-box.open .arrow-icon {
        display: block;
    }

    .content-container .nav-box.open .menu-icon {
        display: none;
    }

    .content-container .nav-item {
        background: none;
        border-radius: 0;
        border: none;
        box-shadow: none;
    }

    .content-container .nav-item .nav-list li {
        margin-bottom: 12px;
    }

    .content-container .nav-item .title {
        margin-bottom: 12px;
    }

    .content-container .nav-item:last-child {
        margin-top: 0;
        padding: 12px 30px 36px;
    }    

    .contact-us {
        padding-bottom: 60px;
    }

    .contact-us::before {
        bottom: 0;
        height: 400px;
    }

    .contact-us .left > h3 {
        font-size: 24px;
    }

    .contact-us .left > p {
        font-size: 16px;
        margin: 11px 0 20px;
    }

    .contact-us .left > .button {
        font-size: 16px;
    }

}

@media (max-width: 552px) {
    .top-banner::before {
        height: 485px;
        background-image: url(https://images.chatartpro.com/chatartweben/assets/support/banner-bg-m.svg);
    }

    .top-banner::after {
        height: 200px;
    }

    .contact-us::before {
        bottom: 115px;
        height: 303px;
        background-image:  url(https://images.chatartpro.com/chatartweben/assets/support/content-bg-bottom-m.svg);
    }

    .contact-us .left {
        max-width: 100%;
        padding: 0 0 40px 0;
        width: 100%;
    }

    .contact-us .right {
        max-width: 288px;
        width: 100%;
        margin: 0 auto;
    }
}