body {
    font-family: Inter, sans-serif;
    font-size: 18px;
    line-height: 1.4;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
}

ul {
    list-style: none;
}

h1 {
    font-weight: 900;
    font-size: 30px;
    line-height: 1.3;
    letter-spacing: -0.3px;
}

h2 {
    font-weight: 900;
    font-size: 24px;
    line-height: 1.5;
    letter-spacing: -0.24px;
    margin-bottom: 24px;
}

p {
    margin-bottom: 20px;
}

p:last-child {
    margin-bottom: 0;
}

.cta-button {
    display: inline-block;
    color: #FFFFFF;
    background-color: #017186;
    border-radius: 8px;
    text-transform: uppercase;
    font-size: 20px;
    line-height: 20px;
    padding: 18px;
    font-weight: 700;
    width: 100%;
    text-align: center;
    transition: 0.12s;
}

.cta-button:hover {
    background-color: #01869f;
}

.d-flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.align-items-center {
    align-items: center;
}

.justify-content-center {
    justify-content: center;
}

.container {
    margin: 0 auto;
    padding: 0 19px;
    max-width: 1243px;
}

.separator {
    margin: 32px 0;
    height: 1px;
    width: 100%;
    background-color: #cce3e7;
}

.topbar {
    color: #FFFFFF;
    background-color: #121212;
    padding: 23px 0 22px 0;
    font-weight: 700;
    font-size: 18px;
    line-height: 1;
}

.topbar .container {
    justify-content: space-between;
    gap: 20px;
    max-width: 1178px;
}

.layout {
    padding: 40px 19px 80px 19px;
    gap: 34px;
}

main {
    flex: 1;
}

.warning {
    margin: 15px 0;
    padding: 10px 16px;
    background-color: #F7F7FB;
    position: relative;
}

.warning:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.warning.info:before {
    background-color: #017186;
}

.warning.danger {
    background-color: #FDF1F0;
    padding-bottom: 20px;
    margin-bottom: 32px;
}

.warning.danger:before {
    background-color: #D74034;
}

.warning.danger a {
    color: #0066FF;
    text-decoration: underline;
}

.warning-title {
    font-weight: 900;
    font-size: 18px;
    line-height: 1.5;
    letter-spacing: -0.36px;
    gap: 4px;
    padding-bottom: 12px;
    margin-bottom: 24px;
    border-bottom: 1px solid #D74034;
}

.warning-title img {
    margin-bottom: 1px;
}

.author {
    font-size: 16px;
    line-height: 22px;
    justify-content: space-between;
    align-items: flex-end;
    width: 100%;
    gap: 10px;
}

.author-name {
    font-style: italic;
}

.article-time {
    color: #717171;
}

.hero-image {
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    margin: 24px 0;
}

.hero-image-seal {
    position: absolute;
    top: 28px;
    left: 39.5%;
}

.quick-version {
    background-color: #F2F9FA;
    padding: 24px;
}

.quick-version h5 {
    font-size: 18px;
    line-height: 1.5;
    text-transform: uppercase;
    font-weight: 900;
    padding-bottom: 12px;
    margin-bottom: 20px;
    border-bottom: 1px solid #017186;
}

.quick-version ul {
    gap: 15px;
}

.quick-version li {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: calc(50% - 7.5px);
    width: 100%;
}

.quick-version li span {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.5;
    letter-spacing: -0.16px;
    flex: 1;
}

.quick-version li:before {
    content: '';
    width: 24px;
    height: 24px;
    background-image: url('../images/pre/icon-checkmark.svg');
}

.introduction-content {
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 32px;
}

.introduction-content div {
    flex: 1;
}

.introduction-content .highlight {
    color: #017186;
    font-style: italic;
}

.introduction-content img {
    border-radius: 12px;
}

.features-text {
    margin: 24px 0 0 0;
}

.features-text a {
    color: #0066FF;
    text-decoration: underline;
}

.features-image {
    border-radius: 12px;
}

.features-list-wrapper {
    background-color: #F7F7FB;
    padding: 24px;
    gap: 20px;
    justify-content: space-between;
    margin: 24px 0;
}

.features-list-wrapper div {
    max-width: 569px;
    justify-content: space-between;
    gap: 20px;
    flex: 1;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    font-weight: 700;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: -0.16px;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 20px;
}

.certifications a,
.faq-warning a {
    color: #0066FF;
}

.reviews-list {
    gap: 15px;
}

.review {
    background-color: #FCFBF9;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 15px;
}

.review-text {
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex: 1;
}

.review-text p {
    margin: 0;
    font-weight: 500;
}

.update {
    border: 1px solid #017186;
    margin: 15px 0;
}

.update-title {
    background-color: #e6f1f3;
    color: #017186;
    font-weight: 700;
    padding: 8px 16px;
    text-transform: uppercase;
    font-size: 18px;
    line-height: 1.5;
    letter-spacing: -0.18px;
}

.update-text {
    color: #017186;
    padding: 8px 16px;
    font-weight: 500;
    background-color: #f9f9f9;
    line-height: 1.6;
}

.update a {
    font-weight: 400;
    color: #0066FF;
    text-decoration: underline;
}

.faq-list {
    gap: 20px;
}

.faq-item {
    padding-bottom: 15px;
    border-bottom: 1px solid #cccccc;
    position: relative;
    cursor: pointer;
}

.faq-question {
    font-weight: 600;
    padding-right: 40px;
}

.faq-answer-wrapper {
    height: 0;
    overflow: hidden;
    transition: 0.12s;
}

.faq-answer {
    padding-top: 8px;
    font-weight: 500;
    letter-spacing: -0.18px;
}

.faq-item span {
    width: 18px;
    height: 18px;
    position: absolute;
    top: 6px;
    right: 6px;
    border: 1px solid #000000;
    border-radius: 15px;
    position: absolute;
    box-shadow: 0 0 1px 0 black, 0 0 1px 0 black;
}

.faq-item span:after,
.faq-item span:before {
    content: '';
    width: 8px;
    height: 1px;
    background-color: #000000;
    position: absolute;
    top: 8px;
    right: 4px;
    border-radius: 4px;
    box-shadow: 0 0 0 0 black;
}

.faq-item span:before {
    transform: rotate(90deg);
    transition: 0.09s;
}

.faq-item.open span:before {
    opacity: 0;
}

.faq-warning {
    padding: 16px;
    background-color: #F9F3E7;
    border-radius: 8px;
    margin-top: 32px;
}

.faq-warning span {
    color: #017186;
    font-weight: 700;
}

.faq-warning p {
    margin-bottom: 16px;
}

.faq-warning p:last-child {
    margin: 0;
}

.faq .cta-button {
    margin: 32px 0 24px 0;
}

.quality-details {
    color: #017186;
    font-weight: 500;
    gap: 10px;
    text-align: center;
    max-width: 582px;
    margin: 0 auto;
    justify-content: space-between;
}

aside {
    width: 366px;
    border-radius: 16px;
    padding: 30px 15px;
    background-color: #fefdfa;
    box-shadow: 0px 1px 5px 0px #00000026;
    align-self: flex-start;
    position: sticky;
    top: 20px;
}

.sidebar-content {
    text-align: center;
}

.product-rating {
    font-weight: 500;
    font-size: 15px;
    line-height: 1;
    gap: 10px;
    margin-bottom: 12px;
}

aside h2 {
    color: #017186;
    font-weight: 700;
    font-size: 26px;
    line-height: 1.2;
    letter-spacing: -0.52px;
    text-align: center;
}

aside .cta-button {
    font-family: Sarabun, Inter, sans-serif;
    text-transform: capitalize;
}

aside p {
    font-weight: 700;
    font-size: 18px;
    line-height: 1.2;
    letter-spacing: -0.18px;
}

.sidebar-image {
    margin-bottom: 20px;
}

footer {
    border-top: 2px solid #000000;
    padding: 30px 0;
}

.footer-content {
    text-align: center;
}

.footer-content ul {
    margin-bottom: 16px;
}

.footer-content p {
    font-weight: 500;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: -0.16px;
    margin: 0;
}

.footer-content div {
    margin-bottom: 24px;
}

.footer-logo {
    filter: invert(1);
    margin-bottom: 24px;
}

footer ul {
    font-family: Poppins, Inter, sans-serif;
    font-size: 14px;
    line-height: 20px;
}
footer ul li:after {
    content: '|';
}

footer ul a {
    padding: 4px;
}

footer ul li:last-child:after {
    content: none;
}

footer .copyright {
    font-size: 14px;
    line-height: 21px;
    padding: 20px 0 8px 0;
    border-top: 1px solid #DFDFDF;
    width: 100%;
    margin-bottom: 0;
}

@media screen and (min-width: 1201px) {
    main {
        padding-left: 32px;
    }
}

@media screen and (max-width: 1200px) {
    .introduction-content {
        flex-direction: column;
        gap: 24px;
    }

    .introduction-content div {
        order: 1;
    }

    .introduction-content img {
        width: 100%;
    }
}


@media screen and (max-width: 991px) {
    .layout {
        flex-direction: column;
    }

    .hero,
    .features {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-image {
        margin-top: 0;
    }

    .features-list-wrapper {
        width: 100%;
    }

    aside {
        width: 100%;
        padding: 30px 12px;
    }
}

@media screen and (min-width: 768px) {
    .quick-version li:nth-child(2) {
        order: 2;
    }

    .quick-version li:nth-child(3) {
        order: 4;
    }

    .quick-version li:nth-child(4) {
        order: 1;
    }

    .quick-version li:nth-child(5) {
        order: 3;
    }

    .quick-version li:nth-child(6) {
        order: 5;
    }
}

@media screen and (max-width: 767px) {
    body {
        font-size: 16px;
    }

    .layout {
        padding: 24px 19px;
    }

    h1 {
        font-size: 26px;
        line-height: 1.3;
        letter-spacing: -0.26px;
    }

    h2 {
        font-size: 22px;
        letter-spacing: -0.22px;
    }

    .hero-image-seal {
        top: 26px;
        left: 0;
        right: 0;
        margin: 0 auto;
        width: 68px;
    }

    .quick-version ul {
        flex-direction: column;
    }

    .quick-version {
        width: 100%;
    }

    .quick-version h5 {
        font-size: 16px;
        letter-spacing: -0.16px;
    }

    .quick-version li {
        max-width: 100%;
    }

    .features-list-wrapper {
        flex-direction: column;
    }

    .features-list-wrapper div {
        max-width: 100%;
        flex-direction: column;
    }

    .review-text {
        gap: 12px;
    }

    .review-text p {
        font-size: 14px;
        line-height: 1.5;
        letter-spacing: -0.14px;
    }

    .quality-details {
        justify-content: center;
    }
}