* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
:where(ul, li) {
    list-style: none;
    padding: 0;
    margin: 0;
}
:where(iframe, img, input, video, select, textarea) {
    max-width: 100%;
    height: auto;
}
body {
    line-height: 1.5;
    color: #1C1E21;
    background-color: #fff;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    z-index: 100;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.nav {
    max-width: 1152px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 40px;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #1C1E21;
}

.logo img {
    height: 100%;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: #1C1E21;
    font-size: 16px;
    font-weight: 500;
}

.menu-button {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu a {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: #1C1E21;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
}

.mobile-menu a:hover {
    background: #F0F2F5;
}

.download-btn {
    background-color: #25D366;
    color: #fff;
    padding: 12px 24px;
    border-radius: 24px;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.3s;
}

.download-btn:hover {
    background-color: #20bd5a;
}

.hero {
    margin-top: 80px;
    padding: 80px 24px 0px 24px;
    background-color: #F0F2F5;
    text-align: center;
}

.hero-content {
    max-width: 1152px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    color: #1C1E21;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero p {
    font-size: 20px;
    color: #65676B;
    margin-bottom: 40px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.qr-section {
    padding: 80px 24px;
    background: #fff;
}

.qr-container {
    max-width: 1152px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.qr-content h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 24px;
}

.qr-content p {
    font-size: 18px;
    color: #65676B;
    margin-bottom: 32px;
}

.qr-image {
    text-align: right;
}

.qr-image img {
    max-width: 300px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.download {
    padding: 80px 24px;
    background: #F0F2F5;
}

.download-grid {
    max-width: 1152px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.download-card {
    background: #fff;
    padding: 32px;
    border-radius: 16px;
    text-align: center;
}

.download-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: #E9F7EC;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.download-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.download-card p {
    color: #65676B;
    font-size: 16px;
    margin-bottom: 1rem;
}


.footer {
    background: #F0F2F5;
    padding: 64px 24px 32px;
}

.footer-content {
    max-width: 1152px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

.footer-column h4 {
    color: #1C1E21;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: #65676B;
    text-decoration: none;
    font-size: 14px;
}

.footer-column a:hover {
    text-decoration: underline;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid #CCD0D5;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom-left {
    display: flex;
    gap: 16px;
}

.footer-bottom-left a {
    color: #65676B;
    text-decoration: none;
    font-size: 12px;
}

.footer-bottom-right {
    color: #65676B;
    font-size: 12px;
}

.language-selector {
    padding: 8px;
    border: 1px solid #CCD0D5;
    border-radius: 4px;
    color: #65676B;
    font-size: 14px;
    margin-right: 16px;
}

.feature-showcase {
    padding: 100px 24px;
    background-color: #fff;
}

.feature-container {
    max-width: 1152px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 64px;
}

.feature-container.reverse {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
    padding: 20px;
}

.feature-title {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: #1C1E21;
}

.feature-description {
    font-size: 18px;
    line-height: 1.6;
    color: #65676B;
    margin-bottom: 24px;
}

.other-text {
    flex: 1;
    padding: 20px;
}

.other-title {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: #1C1E21;
}

.other-description {
    font-size: 18px;
    line-height: 1.6;
    color: #65676B;
    margin-bottom: 24px;
}

.down-other{
    max-width: 1152px;
    margin: 0 auto;
}
.down-other .other-text{
    padding: 20px 0;
}
.learn-more {
    display: inline-flex;
    align-items: center;
    color: #25D366;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: color 0.3s;
}

.learn-more:hover {
    color: #20bd5a;
}

.learn-more::after {
    content: "›";
    margin-left: 8px;
    font-size: 20px;
}

.feature-image {
    flex: 1;
    position: relative;
    text-align: right;
}

.reverse .feature-image {
    text-align: left !important;
}

.feature-image img {
    max-width: 500px;
    max-height: 450px;
    height: auto;
    border-radius: 24px;
}

.divider {
    height: 1px;
    background: #E4E6EB;
    margin: 0 auto;
    max-width: 1152px;
}

.list{
    padding: 100px 0;
    background-color: #fff;
    max-width: 1152px;
    margin: 0 auto;
}
.list .news-list{
    padding: 0px 20px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.list .thum{
    height: 200px;
    background-repeat: no-repeat;
    background-size: auto 100%;
    background-position: center;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
.thum a{
    display: block;
    height: 180px;
    width: 100%;
}
.view h3{
    margin: 1rem 0;
}

.view h3 a{
    color: #000;
    text-decoration: none;
}
.view h3 a:hover{
    text-decoration: underline;
}

.view p{
    font-size: 14px;
    margin-bottom: 10px;
    color: #333;
}
.view span{
    color: #666;
    font-size: 14px;
}

.breadcrumbs a{
    color: #666;
    text-decoration: none;
}

.list .breadcrumbs{
    padding: 20px;
    color: #666;
    font-size: 14px;
}
article .breadcrumbs{
    padding: 20px 0px;
    color: #666;
    font-size: 14px;
}

.down .breadcrumbs{
    padding: 20px 0px;
    color: #666;
    font-size: 14px;
}

article{
    padding: 80px 20px 0px 20px;
    background-color: #fff;
    max-width: 800px;
    margin: 0 auto;
}

.content{
    line-height: 2;
    font-size: 1rem;
    color: #666;
}
figure {
    margin: 0 auto;
    text-align: center;
}
.media iframe{
    min-height: 315px;
}
.content h2, .content h3{
    font-size: 1.2rem;
    color: #000;
}
.content h4 {
    font-size: 1rem;
    color: #000;
}
.content strong, .content b{
    color: #000;
}
.content a{
    color: #25d366;
    font-weight: 700;
}
.content img {
    max-width: 750px;
    margin: .8rem auto;
    display: block;
}
.nextorprev{
    width: 750px;
    margin: auto;
    font-size: .8rem;
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}
.nextorprev a{
    color: #333;
    text-decoration: none;
    font-size: .8rem;
}
.nextorprev a:hover{
    text-decoration: underline;
}
.author{
    font-size: .9rem;
    margin: 1rem 0;
    color: #666;
}
.author a{
    color: #25d366;
    text-decoration: none;
}
.author a:hover{
    text-decoration: underline;
}

.read-table{
    background-color: #FFF;
    max-width: 300px;
    padding: .2rem 1rem;
    border-radius: .5rem;
    border: solid 1px #CCC;
    margin: 1rem 0;
    box-shadow: 0px 0px 10px #d1d8dd, 0px 0px 40px #ffffff;
}
.read-tool{
    font-size: .95rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.read-table ul {
    list-style-type: none;
    counter-reset: section;
    font-size: .8rem;
}

.read-table ul li::before {
    counter-increment: section;
    content: counter(section) ". ";
}

.read-table ul ul {
    counter-reset: subsection;
    margin-left: 1rem;
}

.read-table ul ul li::before {
    counter-increment: subsection;
    content: counter(section) "." counter(subsection) " ";
}
.read-list {
    max-height: 1000px;
    transition: max-height 0.2s ease-out;
}
.read-list a{
    color: #777 !important;
    text-decoration: none;
    font-weight: normal;
}
.read-list a:hover{
    text-decoration: underline;
}
.read-list.hidden {
    max-height: 0;
    overflow: hidden;
    border-top: none;
}
.toggle-icon {
    transition: transform 0.3s ease;
}
.toggle-icon.rotated {
    transform: rotate(180deg);
}
.fqas{
    overflow: hidden;
    margin-top: 2rem;
}
.fqas div{
    background: #fff;
    border: solid 1px #CCC;
    padding: 15px 15px 20px;
    box-shadow: 0px 0px 10px #d1d8dd, 0px 0px 40px #ffffff;
    border-radius: 5px;
    margin-bottom: 1rem;
}
.fqas div h3{
    font-size: 1.2rem;
    border-bottom: 1px solid #F0F4F8;
    padding-bottom: 0.825rem;
    margin-bottom: 0.825rem;
    position: relative;
    padding-right: 40px;
}
.fqas div p{
    font-size: .9rem;
    color: #666;
}

.rel{
    padding: 30px 0 100px 0;
    background-color: #fff;
    max-width: 800px;
    margin: 0 auto;
}
.rel .news-list{
    padding: 0px 20px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
.rel .thum{
    height: 220px;
    background-repeat: no-repeat;
    background-size: auto 100%;
    background-position: center;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.down{
    padding: 100px 0 100px 0;
    background-color: #fff;
    max-width: 1152px;
    margin: 0 auto;
}
.down-main{
    display: flex;
    justify-content: space-between;
}
.down-info{
    width: 500px;
}
.down-info h1{
    font-size: 28px;
    margin-bottom: 20px;
}
.download-info{
    background-color: #F0F2F5;
    padding: 20px 20px 30px 20px;
    border-radius: .5rem;
    margin: 30px 0;
}
.download-info p{
    margin: 20px 0;
}
.toweb a{
    font-size: 18px;
    color: #000;
    text-decoration: none;
    border-bottom: #25d366 solid 2px;
}
.toweb a:hover{
    color: #25d366;
}
.faq-list{
    padding: 0px 20px;
}
.faq-list details {
    background-color: #f0f0f0;
    border-radius: .5rem;
    padding: .8rem 1rem;
    cursor: pointer;
    margin: 1rem 0;
}

.faq-list summary {
    font-size: 1.1em;
    font-weight: bold;
    color: #333;
    list-style: none;
    position: relative;
}
.faq-list details p{
    margin-top: .8rem;
}

.faq-list summary::after {
    content: '+';
    font-size: 0.9em;
    color: #888;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.3s ease;
}

details[open] summary::after {
    content: '-';
}
.author-main{
    margin: 20px;
}
.article-author{
    background-color: #F1F1F1;
    border: solid 1px #ebebeb;
    display: flex;
    flex-direction: column;
    text-align: center;
    gap: .8rem;
    padding: 1rem;
    border-radius: .2rem;
    margin-top: 1rem;
}
.author-avatar{
    width: 150px;
    height: 150px;
    border-radius: 75px;
    flex-shrink: 0;
    overflow: hidden;
    line-height: 0;
    margin: auto;
}
.author-avatar img{
    margin: 0;
}
.author-info{
    font-size: .9rem;
}
.author-info h3 a{
    color: #000;
    text-decoration: none;
    font-size: 1.1rem;
}
.author-info h3 a:hover{
    text-decoration: underline;
    color: #e65585;
}

@media (max-width: 768px) {
    .nav {
        padding: 16px;
    }

    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 18px;
    }

    .qr-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .qr-content h2 {
        font-size: 32px;
    }
    .qr-image {
        text-align: center;
    }
    .nav-links {
        display: none;
    }

    .menu-button {
        display: block;
    }

    .content img {
        max-width: 100%;
    }
    .fqa{
        width: 100%;
    }
    .blog_video_player_wrap{
        max-width: 100%;
    }
    .media iframe{
        min-height: 12.5rem;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-bottom-left {
        flex-wrap: wrap;
        justify-content: center;
    }

    .feature-container {
        flex-direction: column-reverse !important;
        text-align: center;
        gap: 32px;
    }

    .feature-title {
        font-size: 32px;
    }

    .feature-description {
        font-size: 16px;
    }

    .feature-showcase {
        padding: 64px 24px;
    }
    .list .news-list, .rel .news-list{
        grid-template-columns: repeat(1, 1fr);
    }
    .down{
        padding: 80px 24px 50px 24px;
    }
    .down-info{
        width: 100%;
    }
    .down-main{
        flex-direction: column;
    }
    .down-pic{
        display: none;
    }
}