body {
    margin: 0;
    background: #eeeeee;
    color: #111827;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.45;
}
a {
    color: #00005a;
    font-weight: bold;
}
.sm-site-header {
    background: #171638;
    color: #fff;
    min-height: 36px;
}
.sm-site-header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 16px;
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.sm-brand {
    display: inline-flex;
    align-items: center;
    color: #fff;
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
}
.sm-brand img {
    width: 28px;
    height: 28px;
    margin-right: 6px;
}
.sm-language {
    color: #fff;
    font-size: 14px;
    font-weight: normal;
    text-decoration: none;
}
.sm-language-nav {
    display: flex;
    align-items: center;
    gap: 12px;
}
.sm-wrap {
    max-width: 1100px;
    margin: 0 auto 42px;
    padding: 0 20px;
}
.sm-hero {
    max-width: 900px;
    margin: 44px auto 28px;
    text-align: center;
}
h1 {
    margin: 0 0 14px;
    font-size: 43px;
    line-height: 1.08;
}
h2 {
    margin: 0 0 10px;
    font-size: 22px;
    line-height: 1.2;
    text-align: center;
}
h3 {
    margin: 18px 0 8px;
    font-size: 21px;
}
p {
    margin: 0 0 14px;
}
.sm-lede {
    max-width: 840px;
    margin: 0 auto 24px;
    color: #1f2937;
    font-size: 18px;
}
.sm-actions {
    margin: 24px 0 0;
}
.sm-button,
.sm-secondary,
.sm-link-box {
    display: inline-block;
    border-radius: 4px;
    padding: 11px 18px;
    font-size: 16px;
    text-decoration: none;
}
.sm-button {
    background: #171638;
    border: 1px solid #171638;
    color: #fff;
    margin: 0 6px 10px;
}
.sm-secondary {
    background: #fff;
    border: 1px solid #cfcfcf;
    color: #00005a;
    margin: 0 6px 10px;
}
.sm-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}
.sm-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}
.sm-card,
.sm-note-card,
.sm-panel {
    background: #fff;
    border: 1px solid #cfcfcf;
    border-radius: 6px;
}
.sm-card {
    padding: 26px 24px;
    text-align: center;
}
.sm-panel {
    padding: 26px 28px;
    margin-bottom: 20px;
}
.sm-card p,
.sm-panel p,
.sm-panel li {
    font-size: 16px;
}
.sm-card ul,
.sm-panel ul {
    margin: 12px 0 0;
    padding-left: 28px;
    text-align: left;
    font-size: 16px;
}
.sm-card li,
.sm-panel li {
    margin: 5px 0;
}
.sm-new {
    color: #e2231a;
    font-size: 15px;
    font-weight: bold;
    text-transform: uppercase;
}
.sm-link-box {
    box-sizing: border-box;
    width: 100%;
    background: #f7f7f9;
    border: 1px solid #d9d9df;
    color: #00005a;
    margin-top: 6px;
    text-align: center;
}
.sm-note-card {
    margin: 24px 0 0;
    padding: 18px;
    text-align: center;
    font-size: 16px;
}
.sm-footer {
    border-top: 1px solid #d0d0d0;
    margin-top: 46px;
    padding: 28px 0 40px;
    text-align: center;
    font-size: 16px;
}
.sm-footer a {
    margin: 0 8px;
}
.sm-list-grid {
    columns: 2;
    column-gap: 32px;
    margin: 10px 0 0;
    padding-left: 22px;
}
.sm-list-grid li {
    break-inside: avoid;
    margin: 3px 0;
}
.sm-small {
    color: #4b5563;
    font-size: 15px;
}
.article-page {
    max-width: 1020px;
}
.article-page h2 {
    text-align: left;
}
.article-page h3 {
    color: #172033;
}
.article-page section {
    scroll-margin-top: 18px;
}
.page-subtitle,
.abstract {
    max-width: 860px;
    margin: 0 auto 18px;
    color: #374151;
    font-size: 18px;
}
.summary-box,
.update-note,
.research-note,
.note-box {
    background: #f7f7f9;
    border: 1px solid #d9d9df;
    border-radius: 6px;
    padding: 16px 18px;
    margin: 16px 0;
}
.jump-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin: 0 0 20px;
}
.jump-nav strong {
    padding: 8px 2px;
}
.jump-nav a,
.test-links a {
    display: inline-block;
    padding: 8px 11px;
    background: #fff;
    border: 1px solid #d5d5dd;
    border-radius: 4px;
    text-decoration: none;
}
.article-group,
.article-card,
.faq-item,
.resource-card,
.drive-card,
.dimension-card,
.behavior-card {
    background: #fff;
    border: 1px solid #cfcfcf;
    border-radius: 6px;
}
.article-group,
.article-card {
    padding: 24px 26px;
    margin-bottom: 20px;
}
.group-note {
    color: #4b5563;
}
.resource-list {
    margin: 12px 0 0;
    padding-left: 22px;
}
.resource-list li {
    margin: 7px 0;
}
.dimension-grid,
.behavior-grid,
.drive-grid,
.resource-grid,
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin: 16px 0;
}
.drive-grid,
.resource-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
.dimension-card,
.behavior-card,
.drive-card,
.resource-card,
.faq-item {
    padding: 18px;
}
.dimension-card h3,
.behavior-card h2,
.drive-card h3,
.resource-card h3,
.faq-item h3 {
    margin-top: 0;
}
.table-wrap {
    width: 100%;
    margin: 14px 0 20px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid #d9d9df;
    border-radius: 5px;
}
table {
    width: 100%;
    min-width: 640px;
    border-collapse: collapse;
    background: #fff;
    font-size: 14px;
}
caption {
    padding: 10px 12px;
    background: #f7f7f9;
    font-weight: bold;
    text-align: left;
}
th,
td {
    padding: 8px 10px;
    border-top: 1px solid #e3e3e3;
    text-align: right;
    white-space: nowrap;
}
th:first-child,
td:first-child {
    text-align: left;
    white-space: normal;
}
thead th {
    background: #fafafa;
    border-top: 0;
}
.method-list,
.spectrums,
.data-list {
    margin: 12px 0 0;
    padding-left: 22px;
}
.method-list li,
.spectrums li,
.data-list li {
    margin: 7px 0;
}
.chart {
    margin: 16px 0 0;
    text-align: center;
}
.chart img {
    max-width: 100%;
    height: auto;
}
details {
    background: #fff;
    border: 1px solid #cfcfcf;
    border-radius: 6px;
    margin: 20px 0;
}
summary {
    cursor: pointer;
    padding: 14px 16px;
    font-weight: bold;
}
.details-body,
.score-wrap {
    padding: 0 16px 16px;
}
.score-intro,
.sample-note {
    color: #4b5563;
    font-size: 14px;
}
.score-list,
.item-cloud {
    columns: 2;
    column-gap: 24px;
}
.score-item {
    break-inside: avoid;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 5px 0;
    border-bottom: 1px solid #ececf0;
}
.score-item span {
    min-width: 0;
}
.score-item strong {
    flex: 0 0 auto;
}
.mini-test {
    display: grid;
    gap: 8px;
    margin-top: 12px;
}
.mini-test .item {
    padding: 11px 12px;
    background: #f7f7f9;
    border: 1px solid #e3e3e6;
    border-radius: 4px;
}
.scale,
.code-example {
    font-family: Consolas, "Courier New", monospace;
}
.scale {
    display: inline-block;
    margin: 3px 6px;
    font-weight: bold;
    white-space: nowrap;
}
.code-example {
    padding: 11px 13px;
    background: #f4f4f6;
    border: 1px solid #dedee2;
    border-radius: 4px;
    overflow-wrap: anywhere;
}
blockquote {
    margin: 0 0 18px;
    padding: 12px 16px;
    border-left: 4px solid #171638;
    background: #f7f7f9;
}
.test-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 14px 0;
}
.faq-heading {
    margin: 26px 0 10px;
}
.author {
    text-align: right;
    color: #4b5563;
}
@media (max-width: 820px) {
    .sm-grid,
    .sm-grid-3,
    .dimension-grid,
    .behavior-grid,
    .drive-grid,
    .resource-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    .sm-list-grid,
    .score-list,
    .item-cloud {
        columns: 1;
    }
}
@media (max-width: 760px) {
    h1 {
        font-size: 34px;
    }
    .sm-lede {
        font-size: 17px;
    }
}
@media (max-width: 460px) {
    .sm-brand {
        font-size: 17px;
    }
    .sm-brand img {
        width: 24px;
        height: 24px;
    }
    h1 {
        font-size: 29px;
    }
    .sm-button,
    .sm-secondary,
    .sm-link-box {
        width: 100%;
        box-sizing: border-box;
        margin-left: 0;
        margin-right: 0;
        font-size: 16px;
    }
}