/* 视觉豁免:官网自有视觉系统(参照 anthropic.com 版式＋数巨有谱品牌色),不用硅基版视觉卡 */
/* 版式系统(10-25 标注后统一):品牌色、章节网格、间距、去箭头。装在 polish.css 之后,全站生效。 */
:root{--brand:#0079de;--clay:#0079de;--col-gap:64px}

/* 品牌色:一切强调与悬停用数巨有谱蓝 */
.text-link:hover{color:var(--brand);border-color:var(--brand)}
.button:not(.secondary):hover{background:var(--brand);border-color:var(--brand);color:#fff}
.button.secondary:hover{border-color:var(--brand);color:var(--brand);background:transparent}
a:hover h3,.cat-card:hover h3 a,.article-card:hover h3{color:var(--brand)}
.article-card:hover h3{text-decoration:none}
#read-progress{background:var(--brand)}
.cat-card h3 a::after,.teaser-foot [aria-hidden],.coop-go{display:none!important}

/* 章节:标题列 + 内容列。宽屏上标题靠左、内容靠右,不再让右半边空着 */
.section{padding-top:64px;padding-bottom:64px}
.page-hero{padding-top:56px;padding-bottom:48px}
.section-split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);column-gap:var(--col-gap);row-gap:0;align-items:start}
.section-split>.section-heading{grid-column:1;grid-row:1/span 40;margin:0;position:sticky;top:calc(var(--toc-offset,120px) + 8px);align-self:start}
.section-split>.section-heading h2{font-size:clamp(26px,2.4vw,34px);line-height:1.35;margin:0}
.section-split>*:not(.section-heading){grid-column:2;min-width:0}
.section-split>.section-intro{margin:0 0 28px;max-width:none;font-size:17px;line-height:1.9;color:var(--ink)}
.section-split .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 40px}
.section-split .steps{grid-template-columns:repeat(2,minmax(0,1fr));margin:0}
.section-split .article-grid{gap:40px}
.section-split .intro-grid{gap:48px}
.section-split .prose,.section-split .editorial-reading .prose{max-width:none}
.section-split .editorial-reading{max-width:none;padding-bottom:0}
.section-split .editorial-reading h2{margin-top:36px}
.section-split .callout{margin-top:0}
.section-split .link-list{margin:0}
.section-split .pull-quote{margin:0 0 28px}
.section-split .fact-list{margin:0}
.section-split .std-roster{margin:0}
.section-split .history-list{margin:0}
.section-split .section-heading+.feature-grid,.section-split .section-heading+.prose,.section-split .section-heading+.article-grid,.section-split .section-heading+ol,.section-split .section-heading+.link-list{margin-top:6px}
@media(max-width:1023px){.section-split{display:block}.section-split>.section-heading{position:static;margin-bottom:28px}.section-split .feature-grid{grid-template-columns:1fr}.section-split .steps{grid-template-columns:1fr}}

/* 阅读栏:整页文章居中,一行三十多个汉字 */
.reading-column{max-width:740px;margin:0 auto}
.reading-column .prose{max-width:none}

/* 中文排版:段距、小标题贴正文、表格随内容宽 */
.prose p{line-height:1.95}
.prose p+p{margin-top:20px}
.prose h2{margin:40px 0 14px}
.prose h3{margin:30px 0 10px;font-size:19px}
.prose h2+p,.prose h3+p{margin-top:0}
.prose ul,.prose ol{margin:12px 0 20px}
.prose li+li{margin-top:6px}
.prose table{width:auto;max-width:100%}
h3{line-height:1.5}
.lead{line-height:1.85}

/* 去箭头:按钮只留文字 */
.button [aria-hidden],.text-link [aria-hidden],.article-more [aria-hidden],.model-entry [aria-hidden]{display:none}

/* 价值观:五枚线图,一词一句 */
.value-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:32px 24px}
.value-list li{margin:0;border-top:1px solid var(--line);padding-top:22px}
.value-list img{display:block;width:96px;height:96px;object-fit:contain;margin:0 0 18px}
.value-list h3{font-size:19px;margin:0 0 8px}
.value-list p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
.section-split .value-list{grid-template-columns:repeat(5,minmax(0,1fr));gap:24px 16px}
.section-split .value-list img{width:84px;height:84px}
.section-split .value-list h3{font-size:17px}
/* 不做的事:三组 */
.triad{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.triad-group h3{font-size:17px;margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.triad-group ol{list-style:none;margin:0;padding:0;counter-reset:lines}
.triad-group li{margin:0;padding:12px 0 12px 0;font-size:15px;line-height:1.85;color:#2f312c;border-top:1px solid #e3e2da}
.triad-group li:first-child{border-top:0;padding-top:0}
.section-split .triad{grid-template-columns:1fr;gap:28px}
@media(max-width:768px){.value-list,.section-split .value-list{grid-template-columns:repeat(2,minmax(0,1fr))}.triad{grid-template-columns:1fr}}

/* 产品页:样本的组成与参数、质量维度、相关数据产品 */
.cat-param-list{margin:0 0 28px;border-top:1px solid var(--line)}
.cat-param-list>div{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.cat-param-list dt{font-size:13px;color:var(--muted);padding-top:2px}
.cat-param-list dd{margin:0;font-size:15px;line-height:1.85}
.cat-composition .facet-group{margin:0 0 24px}
.cat-composition .facet-group h3{font-size:13px;font-weight:400;color:var(--muted);margin:0 0 8px}
.cat-composition .facet-group ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}
.cat-composition .facet-group li{margin:0;padding:3px 10px;border:1px solid var(--line);border-radius:4px;font-size:13px;line-height:1.7}
.cat-composition .cat-specs{margin-top:8px}
.cat-composition .cat-spec-intro,.cat-composition .cat-spec-definition{max-width:none}
.cat-quality-list{margin:0;border-top:1px solid var(--line)}
.cat-quality-list>div{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.cat-quality-list dt{font-size:13px;color:var(--muted);padding-top:3px}
.cat-quality-list dd{margin:0;font-size:15px;line-height:1.9}
.cat-related-section .cat-section-head{margin-bottom:28px}
.cat-related-group{margin-bottom:40px}
.cat-related-group h3{font-size:17px;margin:0 0 6px}
.cat-related-note{font-size:13px;color:var(--muted);margin:0 0 16px}
.cat-related-group .cat-related{grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.cat-related-group .cat-related h4{font-size:17px;line-height:1.6;font-weight:500;margin:0 0 10px}
.cat-related-group .cat-related>a:hover h4{color:var(--brand)}
.cat-facets.section-split{display:grid}
@media(max-width:768px){.cat-param-list>div,.cat-quality-list>div{grid-template-columns:1fr;gap:4px}.cat-related-group .cat-related{grid-template-columns:1fr}}

/* 研究专区:参考页按章节排,文章居中读 */
.rwd-hero .rwd-intro{max-width:720px;margin-top:20px;font-size:16px;color:var(--muted)}
.rwd-hero .rwd-intro p{margin:0}
.rwd-meta{display:flex;flex-wrap:wrap;gap:10px 36px;margin:28px 0 0;padding-top:20px;border-top:1px solid var(--line);font-size:13px}
.rwd-meta>div{display:flex;gap:10px}
.rwd-meta dt{color:var(--muted)}
.rwd-meta dd{margin:0}
.rwd-prose>p:first-child,.rwd-prose>table:first-child,.rwd-prose>ul:first-child{margin-top:0}
.rwd-prose table{width:100%;font-size:14px;line-height:1.7;border-collapse:collapse;margin:8px 0 20px}
.rwd-prose th{font-size:13px;font-weight:500;color:var(--muted);text-align:left;padding:0 12px 10px 0;border-bottom:1px solid #000}
.rwd-prose td{padding:11px 12px 11px 0;border-bottom:1px solid var(--line);vertical-align:top}
.rwd-prose code{font-size:13px}
.rwd-prose img{max-width:100%;height:auto}
.rwd-grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 32px}
.rwd-grid li{margin:0;padding:12px 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:2px}
.rwd-grid li a{font-weight:500}
.rwd-grid li span{font-size:13px;color:var(--muted)}
.rwd-cards,.rwd-products{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px}
.prose .rwd-cards>a:not(.button):not(.text-link),.prose .rwd-products>a:not(.button):not(.text-link){display:block;padding:20px 0;border-top:1px solid var(--line);color:inherit;text-decoration:none}
.prose .rwd-cards>a>span{display:block;font-size:13px;line-height:1.6;color:var(--muted);margin:0 0 8px;white-space:nowrap}
.prose .rwd-cards>a>h3,.prose .rwd-products>a>h3{font-size:17px;line-height:1.6;font-weight:500;margin:0 0 8px}
.prose .rwd-cards>a>p,.prose .rwd-products>a>p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}
.prose .rwd-cards>a:hover>h3,.prose .rwd-products>a:hover>h3{color:var(--brand)}
.rwd-grid li+li{margin-top:0}
.prose .rwd-products{margin-top:20px}
.rwd-prose table.rwd-list{table-layout:fixed}
.rwd-prose>h3{font-size:19px;font-weight:500;margin:36px 0 12px}
.rwd-digest>h3{font-size:19px;font-weight:500;margin:40px 0 14px}
.rwd-digest>h3:first-of-type{margin-top:28px}
.rwd-count{font-family:var(--sans);font-size:14px;font-weight:400;color:var(--muted);margin-left:10px}
.cat-system-links{display:flex;flex-wrap:wrap;gap:8px 24px;margin:0;padding-top:14px;border-top:1px solid var(--line)}
.cat-system-links a{text-decoration:underline;text-underline-offset:4px}
.std-no{white-space:nowrap}
.rwd-foot{padding:24px 0 56px;font-size:13px;color:var(--muted)}
.rwd-credit{margin:0}
.rwd-article figure{margin:32px 0}
.rwd-article figure img{display:block;max-width:100%;height:auto}
.rwd-article figcaption{font-size:13px;color:var(--muted);margin-top:8px}
.rwd-article table{font-size:14px;line-height:1.7;border-collapse:collapse;width:100%;margin:12px 0 24px;display:block;overflow-x:auto}
.rwd-article th{font-size:13px;font-weight:500;color:var(--muted);text-align:left;padding:0 12px 10px 0;border-bottom:1px solid #000}
.rwd-article td{padding:10px 12px 10px 0;border-bottom:1px solid var(--line);vertical-align:top}
@media(max-width:768px){.rwd-grid,.rwd-cards,.rwd-products{grid-template-columns:1fr}.rwd-prose table{display:block;overflow-x:auto}}
/* 文件清单:来源标签跟在文件行后面,不另起一行 */
.available-files .file-badges li{display:flex;align-items:center;gap:12px}
.available-files .file-badges li>.file-row{flex:1;min-width:0}
.available-files .file-badges li>.file-source{flex:none;font-size:13px;color:var(--muted)}

/* 字体系统(10-25):衬线只用于页面标题与章节标题,正文与小字用无衬线;汉字不做负字距;最小 13px */
h1,h2{font-family:var(--serif);font-weight:500;letter-spacing:0}
h1{font-size:clamp(36px,3.8vw,56px);line-height:1.25}
h2{font-size:clamp(26px,2.5vw,36px);line-height:1.3}
h3{font-size:20px;font-weight:600;line-height:1.5;letter-spacing:0}
h4{font-size:17px;font-weight:600;line-height:1.5}
.page-hero h1,.cat-product-head h1,.cat-page-head h1{font-size:clamp(36px,3.8vw,56px);letter-spacing:0;line-height:1.25}
.section-split>.section-heading h2{font-size:clamp(24px,2.2vw,32px)}
.section-heading h2,.section h2.section-title,.intro-grid h2,.cooperation-strip h2,.cat-two-col h2,.cat-section-head h2,.cat-sample-grid h2,.cat-reading h2{font-size:clamp(26px,2.5vw,36px);letter-spacing:0;font-weight:500}
.article-card h3{font-size:24px;font-weight:500}
.lead,.page-hero>p:not(.section-label),.page-hero>div>p:not(.section-label){font-size:18px;line-height:1.8}
body{font-size:16px;line-height:1.9}
.section-label,.cat-kicker,.a-label,.eyebrow,.fd-kicker,.product-category,.mp-kicker{font-size:13px;letter-spacing:.02em}
table,.cat-table{font-size:14px}
small,.cat-small,.file-size,.sample-tag,.toc-bar{font-size:13px}
.button{font-size:15px;font-weight:500}

/* 目录卡片:标签集中到底部,按维度分行,各维度一种样式 */
.cat-card-rows{margin:0 0 14px;padding-top:14px;border-top:1px solid var(--line)}
.cat-card-rows>div{display:grid;grid-template-columns:40px minmax(0,1fr);gap:10px;align-items:baseline;padding:5px 0}
.cat-card-rows dt{font-size:13px;color:var(--muted)}
.cat-card-rows dd{margin:0;font-size:13px;line-height:1.8;display:flex;flex-wrap:wrap;gap:6px}
.cat-card-rows .cat-card-teams{gap:0}
.cat-card-rows .cat-card-teams span{color:#3a3b37}
.cat-card-rows .cat-card-teams span+span::before{content:"、";color:var(--muted)}
.cat-card-rows .source-badge{border:1px solid var(--line);border-radius:4px;padding:1px 8px;font-size:13px}
.cat-card-rows .status-badge{margin:0;background:#e7eee8;color:#234d3a;border:0;border-radius:4px;padding:1px 8px;font-size:13px}
.cat-card-foot{font-size:14px}
.cat-card-foot a{font-size:14px;border-bottom:1px solid currentColor;padding-bottom:2px}
.cat-card-meta{font-size:13px}

/* 新闻图文:图随正文宽,图注小字 */
.historical-record img{display:block;max-width:100%;height:auto;border:1px solid var(--line);margin:28px 0 8px}
.historical-record p>em:only-child{display:block;font-style:normal!important;font-size:13px;line-height:1.7;color:var(--muted);margin:0 0 28px}
.historical-record h2{font-size:clamp(22px,2vw,28px);margin:40px 0 12px}

/* 页脚诗:章节名在「如山海」之上 */
.footer-verse .chapter .en{font:500 13px/1.4 var(--sans);color:var(--ink);letter-spacing:.04em;margin-bottom:2px}