:root{--bg: #f7f7f7;--surface: #ffffff;--sidebar: #eeeeee;--ink: #1b1b1b;--muted: #626262;--faint: #6c6c6c;--line: #d9d9d9;--line-strong: #bdbdbd;--accent: #9a3412;--accent-dark: #76270d;--accent-soft: #fae9e2;--focus: #1f5fbf;--font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC", system-ui, sans-serif;--font-reading: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;--text-caption: .75rem;--text-ui: .875rem;--text-body: 1rem;--text-item-title: 1.125rem;--text-section: 1.25rem;--text-page: 2.25rem;--weight-regular: 400;--weight-medium: 500;--weight-semibold: 600;--weight-bold: 700;--leading-tight: 1.2;--leading-ui: 1.5;--leading-reading: 1.72}*{box-sizing:border-box}html{color-scheme:light;background:var(--bg)}body{min-width:320px;margin:0;color:var(--ink);background:var(--bg);font-family:var(--font-ui);font-size:var(--text-body);font-weight:var(--weight-regular);line-height:var(--leading-ui);font-kerning:normal;font-optical-sizing:auto;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button,input,select{color:inherit;font:inherit}button,select{cursor:pointer}a{color:inherit;text-decoration:none}:focus-visible{outline:3px solid color-mix(in srgb,var(--focus) 66%,white);outline-offset:3px}::-moz-selection{color:var(--ink);background:#f3bda8}::selection{color:var(--ink);background:#f3bda8}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:12px;left:12px;z-index:100;padding:10px 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60px;border-top:1px solid var(--line);border-left:0}.has-ip-promo>.archive-sidebar{grid-row:1 / span 3}.has-ip-promo>.ip-promo-shell{grid-column:2;grid-row:1}.has-ip-promo>.archive-main{grid-column:2;grid-row:2}.has-ip-promo>.archive-insights{grid-column:2;grid-row:3}.ip-promo-scene{inset:auto 20px 20px;width:auto;min-width:0;height:390px}.ip-promo-copy{min-height:350px;max-width:100%;justify-content:flex-start;padding-top:46px}.ip-promo-copy h2{font-size:clamp(2.9rem,5.8vw,4rem)}.ip-promo-visual{min-height:780px}.ip-promo-scene:after{display:none}.insight-section+.insight-section{margin:0;padding:0;border-top:0}.insight-note{grid-column:1 / -1;margin-top:0}}@media(max-width:840px){.archive-app{display:block;border:0}.mobile-menu-button{position:fixed;top:16px;right:16px;z-index:40;display:grid;width:44px;height:44px;place-content:center;gap:6px;padding:0;border:1px solid var(--line);border-radius:9px;background:var(--surface)}.mobile-menu-button span{display:block;width:18px;height:1px;background:var(--ink)}.archive-sidebar{position:fixed;inset:0 auto 0 0;z-index:30;width:min(84vw,300px);height:100vh;box-shadow:6px 0 8px #00000014;transform:translate(-105%);transition:transform .2s cubic-bezier(.22,1,.36,1)}.archive-sidebar.is-open{transform:translate(0)}.archive-main{padding:84px 24px 64px}.ip-demo-page .archive-main{padding-top:48px}.ip-promo-toggle{min-height:58px;grid-template-columns:minmax(0,1fr) 20px;padding:0 74px 0 22px}.ip-promo-toggle>span:nth-child(2){display:none}.ip-promo-visual{min-height:760px}.ip-promo-copy{min-height:340px;max-width:100%;justify-content:flex-start;padding:48px 24px 28px}.ip-promo-copy h2{font-size:clamp(3rem,13vw,4.4rem)}.ip-promo-copy>span{max-width:28em;font-size:var(--text-ui)}.ip-promo-actions{margin-top:22px}.ip-promo-scene{inset:auto 16px 16px;width:auto;min-width:0;height:370px;border-radius:18px}.ip-promo-scene:after{display:block;inset:0 0 auto;width:100%;height:24%;background:linear-gradient(180deg,color-mix(in oklch,var(--ip-char) 30%,transparent) 0%,transparent 100%)}.ip-promo-scene>p{right:18px;bottom:16px}.archive-heading{display:block}.archive-heading h1{font-size:2rem}.about-shortcut{display:inline-block;margin-top:18px}.retrieval-tools{margin-top:28px;padding:14px}.search-control kbd{display:none}.filter-controls{flex-wrap:wrap;gap:10px 18px}.article-row{grid-template-columns:48px minmax(0,1fr);gap:14px}.open-article{display:none}.archive-insights{display:block;padding:34px 24px 56px}.insight-section+.insight-section{margin-top:36px;padding-top:28px;border-top:1px solid var(--line)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important}}