/* Font families verified in Claude's official website styles, 2026-11-01. */
@font-face{font-family:"Anthropic Sans";src:url("assets/fonts/AnthropicSans_Roman.woff2") format("woff2");font-style:normal;font-weight:100 900;font-display:swap}
@font-face{font-family:"Anthropic Sans";src:url("assets/fonts/AnthropicSans_Italic.woff2") format("woff2");font-style:italic;font-weight:100 900;font-display:swap}
@font-face{font-family:"Anthropic Serif";src:url("assets/fonts/AnthropicSerif_Roman.woff2") format("woff2");font-style:normal;font-weight:100 900;font-display:swap}
@font-face{font-family:"Anthropic Serif";src:url("assets/fonts/AnthropicSerif_Italic.woff2") format("woff2");font-style:italic;font-weight:100 900;font-display:swap}
@font-face{font-family:"Anthropic Mono";src:url("assets/fonts/AnthropicMono_Roman.woff2") format("woff2");font-style:normal;font-weight:100 900;font-display:swap}
@font-face{font-family:"Anthropic Mono";src:url("assets/fonts/AnthropicMono_Italic.woff2") format("woff2");font-style:italic;font-weight:100 900;font-display:swap}
:root{--font-ui:"Anthropic Sans","PingFang SC","Microsoft YaHei",sans-serif;--font-reading:"Anthropic Serif","Songti SC","Noto Serif CJK SC","SimSun",serif;--font-code:"Anthropic Mono","Microsoft YaHei",monospace}
html,html body,html body *{font-family:var(--font-ui)!important;font-optical-sizing:auto}
html body :is(h1,h2,h3,h4,h5,h6,.brand-copy strong,#readerText,.reading-note blockquote),html body :is(h1,h2,h3,h4,h5,h6,.brand-copy strong,#readerText,.reading-note blockquote) *{font-family:var(--font-reading)!important}
html body :is(kbd,code,pre,samp,.eyebrow,.footer-overline,.brand-copy small),html body :is(kbd,code,pre,samp) *{font-family:var(--font-code)!important}
input::placeholder,textarea::placeholder{font-family:var(--font-ui)!important}body{font-feature-settings:"pnum" on,"lnum" on,"liga" on}.brand-copy>strong{font-weight:600}.directory-hero #homeTitle{font-weight:600;letter-spacing:-.035em}