:root{--paper:#f3efe7;--paper-light:#faf7f1;--ink:#171714;--ink-soft:#5f5a52;--line:#cfc7ba;--accent:#bb4d12;--accent-dark:#8f3510;--green:#506a50;--amber:#b37313;--night:#171816;--night-line:#4c493f;--max:1200px;--serif:"Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", STSong, serif;--sans:Inter, "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--paper)}body{background:radial-gradient(circle at 10% 10%, #ffffffb8, transparent 28rem), var(--paper);min-width:320px;min-height:100vh;color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;flex-direction:column;margin:0;line-height:1.65;display:flex}body>.open-callout,body>.site-footer{margin-top:auto}body>.open-callout+.site-footer{margin-top:0}a{color:inherit}button,input{font:inherit}img{max-width:100%;display:block}.site-header{border-bottom:1px solid var(--line);background:#f3efe7f0}.site-header__inner{width:min(calc(100% - 48px), var(--max));justify-content:space-between;align-items:center;gap:28px;min-height:66px;margin:0 auto;display:flex}.site-brand{font-family:var(--serif);letter-spacing:-.03em;white-space:nowrap;align-items:center;gap:12px;font-size:clamp(1.15rem,2vw,1.55rem);font-weight:700;text-decoration:none;display:inline-flex}.site-brand img{object-fit:cover;border-radius:4px;width:40px;height:40px}.site-nav{justify-content:flex-end;align-items:center;gap:clamp(16px,2vw,28px);display:flex}.site-nav__primary,.site-nav__secondary{align-items:center;gap:clamp(14px,2vw,28px);display:flex}.site-nav__secondary{border-left:1px solid var(--line);gap:clamp(12px,1.6vw,20px);margin-left:2px;padding-left:clamp(14px,1.8vw,22px)}.site-nav__link{white-space:nowrap;text-decoration:none;transition:color .15s}.site-nav__link--primary{color:var(--ink);font-size:1rem;font-weight:650}.site-nav__link--secondary{color:var(--ink-soft);letter-spacing:.01em;font-size:.95rem;font-weight:600}.site-nav__link:hover,.site-nav__link:focus-visible{color:var(--accent)}.nav-toggle{border:1px solid var(--ink);background:0 0;padding:7px 12px;display:none}.home-hero{width:min(calc(100% - 48px), var(--max));grid-template-columns:1.2fr .95fr;align-items:center;gap:20px 28px;min-height:0;margin:12px auto 8px;display:grid}.home-hero__copy{flex-direction:column;justify-content:center;gap:0;padding:8px 20px 8px 12px;display:flex}.home-hero h1{font-family:var(--serif);letter-spacing:-.05em;margin:0;font-size:clamp(2.45rem,3.5vw,3.05rem);font-weight:700;line-height:1.1}.home-hero h1:first-line{text-decoration:none}.home-hero__copy>p{max-width:520px;color:var(--ink-soft);margin:10px 0 0;font-size:.95rem;line-height:1.62}.home-hero__actions{gap:12px;margin-top:12px;display:flex}.button{border:1px solid var(--ink);justify-content:center;align-items:center;min-height:44px;padding:0 20px;font-size:1rem;font-weight:700;text-decoration:none;transition:transform .18s,background .18s,color .18s;display:inline-flex}.button:hover{transform:translateY(-2px)}.button:focus-visible,.site-nav__link:focus-visible,.back-to-top:focus-visible,.topic-filters button:focus-visible{outline-offset:3px;outline:3px solid #bb4d1247}.button--primary{color:var(--ink);background:#c8dcc8;border-color:#6a8f6a}.button--primary:hover{color:var(--ink);background:#b4ceb4;border-color:#5a7d5a}.button--outline{background:#ffffff38}.home-hero__image{background:#30271f;border-radius:2px;align-self:center;width:100%;min-height:0;max-height:clamp(220px,26vw,300px);margin:0;overflow:hidden}.home-hero__image img{object-fit:cover;object-position:center 40%;width:100%;height:100%;max-height:clamp(220px,26vw,300px)}.lab-stats{width:min(calc(100% - 48px), var(--max));border-top:1px solid var(--line);border-bottom:1px solid var(--line);grid-template-columns:1.25fr repeat(4,1fr);align-items:center;min-height:88px;margin:0 auto;display:grid}.lab-stats>div{border-left:1px solid var(--line);text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:60px;display:flex}.lab-stats>div:first-child{text-align:left;border-left:0;align-items:flex-start}.lab-stats strong{font-family:var(--serif);font-size:2.2rem;line-height:1}.lab-stats>div:last-child strong{white-space:nowrap;font-size:1.7rem}.lab-stats span{font-family:var(--serif);margin-top:8px;font-size:1rem;font-weight:600}.lab-stats span.lab-stats__emphasis{font-size:1.12rem;font-weight:700}.lab-stats__intro strong{font-size:1.3rem}.lab-stats__intro span{font-family:var(--sans);color:var(--accent);background:0 0;padding:2px 8px;font-size:.9rem;font-weight:600}.home-section,.proof-path{width:min(100% - 76px,1136px);margin:0 auto}.home-section{padding:14px 0 8px}.home-section__header h2,.proof-path h2,.practice-feature h2,.open-callout h2{font-family:var(--serif);margin:0;font-size:clamp(1.75rem,2.7vw,2.35rem);line-height:1.22}.home-section__header p{color:var(--ink-soft);margin:4px 0 0;font-size:.95rem}.home-section__header--split{justify-content:space-between;align-items:end;gap:20px;display:flex}.home-section__header--split>a{font-size:1rem;font-weight:700;text-decoration:none}.topic-filters{flex-wrap:wrap;gap:22px;margin:10px 0 4px;display:flex}.topic-filters button{cursor:pointer;color:var(--ink-soft);background:0 0;border:0;border-bottom:2px solid #0000;padding:8px 4px;font-size:1rem;font-weight:550}.topic-filters button.is-active{border-color:var(--accent);color:var(--accent);font-weight:700}.topic-row{border-bottom:1px solid var(--line);grid-template-columns:108px minmax(0,1fr) 235px;align-items:center;min-height:0;padding:4px 0;display:grid}.topic-row[hidden]{display:none}.topic-row__number{color:var(--accent);font-family:var(--serif);font-size:2.35rem;line-height:1}.topic-row:first-child{min-height:0;padding:8px 0}.topic-row:first-child .topic-row__number{font-size:clamp(3.6rem,5.5vw,4.4rem)}.topic-row__body{padding:14px 28px 14px 0}.topic-row__body>div{color:var(--ink);font-size:1rem;font-weight:500}.topic-row h3{font-family:var(--serif);margin:5px 0 3px;font-size:clamp(1.15rem,1.55vw,1.45rem);line-height:1.3}.topic-row p{color:var(--ink-soft);margin:0;font-size:.9rem;line-height:1.55}.topic-row__state{border-left:1px solid var(--line);flex-direction:column;justify-content:center;gap:4px;min-height:80px;padding-left:32px;display:flex}.topic-row__state strong{font-family:var(--serif);font-size:1.1rem}.topic-row__state strong:before{content:"";background:var(--accent);border-radius:50%;width:10px;height:10px;margin-right:10px;display:inline-block}.topic-row__state span{color:var(--ink-soft);font-size:.9rem}.topic-row__state a{color:var(--accent);margin-top:7px;font-size:.95rem;font-weight:700;text-decoration:none}.evidence-section{padding-top:24px}.evidence-list{border-top:1px solid var(--line);margin-top:12px}.evidence-row{border-bottom:1px solid var(--line);grid-template-columns:115px 120px minmax(0,1fr) 110px 70px;align-items:center;gap:14px;min-height:0;padding:12px 0;font-size:.92rem;display:grid}.evidence-row time{color:var(--ink-soft)}.evidence-row>span{color:var(--ink);font-size:1rem;font-weight:500}.evidence-row h3{font-family:var(--serif);margin:0;font-size:1.05rem}.evidence-row p{color:var(--ink-soft);white-space:nowrap;text-overflow:ellipsis;margin:2px 0 0;font-size:.9rem;line-height:1.5;overflow:hidden}.evidence-row strong{border:1px solid var(--line);text-align:center;padding:5px 9px;font-weight:600}.evidence-row strong[data-outcome=revised]{color:var(--accent);border-color:#bb4d1273}.evidence-row strong[data-outcome=confirmed]{color:var(--green);border-color:#506a5073}.evidence-row>a{font-size:.95rem;font-weight:700;text-decoration:none}.proof-path{grid-template-columns:1.2fr 1fr auto 1fr auto 1fr auto 1fr;align-items:center;gap:16px;min-height:0;padding:18px 0 24px;display:grid}.proof-path>div:first-child p{color:var(--ink-soft);margin:4px 0;font-size:.9rem}.proof-path span{color:var(--accent);font-family:var(--serif);margin-bottom:10px;font-size:1.1rem;font-weight:700;display:block}.proof-path strong{font-family:var(--serif);font-size:1.05rem;line-height:1.55}.proof-path strong a{color:inherit;border-bottom:1px solid color-mix(in srgb, var(--ink) 25%, transparent);text-decoration:none}.proof-path strong a:hover{border-bottom-color:var(--accent);color:var(--accent)}.proof-path b{color:var(--ink-soft);font-size:1.4rem;font-weight:400}.proof-path>a{color:var(--accent);grid-column:7/9;place-self:end;font-size:.95rem;font-weight:700;text-decoration:none}.practice-feature{background:var(--night);color:#eee8dd;grid-template-columns:.82fr 1.18fr;gap:38px;padding:38px max(48px,50vw - 568px);display:grid}.practice-feature__visual header p{color:#bcb5aa;margin:4px 0 18px;font-size:.95rem}.practice-feature__visual img{aspect-ratio:1.18;object-fit:cover;filter:grayscale()contrast(1.02)brightness(.78);opacity:.88;width:100%}.practice-feature__notes>div{border-bottom:1px solid var(--night-line);padding:10px 0}.practice-feature__notes strong{color:#c16b30;font-family:var(--serif);font-size:1.05rem}.practice-feature__notes p,.practice-feature__notes ul{color:#bbb5aa;margin:3px 0 0;font-size:.92rem;line-height:1.6}.practice-feature__notes ul{padding-left:18px}.open-callout{justify-content:space-between;align-items:center;gap:24px;width:min(100% - 72px,1120px);min-height:0;margin:0 auto;padding:28px 0 20px;display:flex}.open-callout h2{max-width:28em;font-size:clamp(1.35rem,2.2vw,1.75rem);line-height:1.35}.open-callout__actions{flex-shrink:0;gap:14px;display:flex}.site-footer{box-sizing:border-box;border-top:1px solid var(--line);background:var(--paper);grid-template-columns:1fr auto 1fr;align-items:center;gap:8px;width:100%;max-width:none;min-height:0;margin:0;padding:.35cm max(24px,50vw - 560px);font-size:.9rem;display:grid}.site-footer>span{justify-self:start}.site-footer strong{font-family:var(--serif);grid-column:2;justify-self:center;font-size:1rem;font-weight:700}.back-to-top{z-index:10;color:#ffffffeb;opacity:.7;background:#8a8680;border-radius:50%;place-items:center;width:48px;height:48px;font-size:1.35rem;text-decoration:none;transition:opacity .18s,transform .18s;display:grid;position:fixed;bottom:.35cm;right:212.976px;box-shadow:0 4px 14px #28241e1f}.back-to-top:hover,.back-to-top:focus-visible{opacity:.92;transform:translateY(-2px)}.section-page,.article-shell{width:min(100% - 48px,1120px);margin:0 auto}.section-hero{grid-template-columns:1fr;row-gap:0;padding:36px 0 22px;display:grid}.section-hero>p:first-child{color:var(--accent);letter-spacing:.08em;margin:0 0 6px;font-size:.86rem;font-weight:700}.section-hero h1{font-family:var(--serif);margin:0;font-size:clamp(1.5rem,3vw,2.25rem);line-height:1.1}.section-hero__summary{color:var(--ink-soft);max-width:600px;margin:12px 0 0;font-size:.84rem;line-height:1.58}.entry-list{border-top:1px solid var(--line);margin-bottom:28px}.entry-row{border-bottom:1px solid var(--line);grid-template-columns:80px minmax(0,1fr) 148px;align-items:center;min-height:0;padding:14px 0;text-decoration:none;display:grid}.entry-row:not(.is-disabled):hover h2{color:var(--accent)}.entry-row.is-disabled{color:#6d675e}.entry-list__number{color:var(--accent);font-family:var(--serif);font-size:1.35rem;line-height:1}.entry-list__body{padding:0 20px 0 0}.entry-list__meta{color:var(--ink);margin:0 0 2px;font-size:.8rem;font-weight:500}.entry-list h2{font-family:var(--serif);margin:2px 0 4px;font-size:clamp(.92rem,1.5vw,1.28rem);line-height:1.34;transition:color .18s}.entry-list p{color:var(--ink-soft);margin:0;font-size:.78rem;line-height:1.55}.entry-list__state{border-left:1px solid var(--line);flex-direction:column;justify-content:center;gap:3px;min-height:0;padding-left:20px;display:flex}.entry-list__state span{font-family:var(--serif);font-size:.86rem;font-weight:700}.entry-list__state small{color:var(--ink-soft);margin-top:0;font-size:.76rem}.article-shell{grid-template-columns:minmax(140px,168px) minmax(0,720px) minmax(140px,168px);justify-content:center;align-items:start;gap:0 36px;padding:40px 0 36px;display:grid}.article-shell>.article-toc{grid-area:1/1}.article-shell>.article{grid-area:1/2;width:100%;min-width:0;max-width:720px}.article-shell:not(:has(>.article-toc)){grid-template-columns:minmax(0,720px);justify-content:center}.article-shell:not(:has(>.article-toc))>.article{grid-column:1;max-width:720px}.article-back{color:var(--accent);font-size:.9rem;font-weight:700;text-decoration:none}.article-eyebrow{color:var(--accent);letter-spacing:.08em;margin:14px 0 0;font-size:.88rem;font-weight:700}.article--why .article-back{font-size:1.05rem}.article--why .article-eyebrow{font-size:1.02rem}.article-shell--contact{padding-top:40px;padding-bottom:36px}.article--contact .article-back{font-size:1.08rem}.article--contact .article-kicker{margin-top:10px}.article--contact .prose{margin-top:18px}.article-kicker{color:var(--ink-soft);gap:14px;margin-top:12px;font-size:.88rem;display:flex}.article-kicker span:first-child{color:var(--accent);font-weight:700}.article h1{font-family:var(--serif);letter-spacing:-.025em;max-width:none;margin:10px 0 8px;font-size:clamp(1.45rem,2.1vw,1.85rem);line-height:1.3}.article--site-page h1{max-width:none;font-size:clamp(1.45rem,2.1vw,1.85rem)}.article-lead{max-width:720px;color:var(--ink-soft);font-family:var(--serif);margin:0 0 4px;font-size:.98rem;line-height:1.62}.geo-cite[data-geo-cite=definition]{border-left:3px solid #a8d4bf;padding-left:.8em}.article-rule{background:var(--accent);width:min(100px,36%);height:2px;margin:18px 0 0}.article--site-page .prose{margin-top:22px}.prose{margin-top:20px;font-size:.94rem;line-height:1.72}.prose h2{font-family:var(--serif);margin:.95em 0 .35em;font-size:1.32rem;line-height:1.3}.prose h3{font-family:var(--serif);margin:.85em 0 .3em;font-size:1.12rem}.prose p,.prose ul,.prose ol{margin:.48em 0}.prose p+p{margin-top:.55em}.prose li+li{margin-top:.2em}.prose blockquote{border-left:3px solid var(--accent);background:#ffffff5c;margin:.9em 0;padding:12px 18px}.prose img{width:100%;margin:18px 0}.prose a{color:var(--accent)}.prose table{border-collapse:collapse;width:100%;margin:.9em 0;font-size:.92rem}.prose th,.prose td{border:1px solid var(--line);text-align:left;vertical-align:top;padding:8px 10px}.prose th{background:#ffffff73}.article-toc{border-right:0;align-content:start;gap:8px;padding:4px 12px 0 0;display:grid;position:sticky;top:28px}.article-toc strong{font-family:var(--serif);color:var(--ink);margin-bottom:6px;font-size:.95rem}.article-toc a{color:var(--ink-soft);font-size:.88rem;line-height:1.45;text-decoration:none}.article-toc a:hover,.article-toc a:focus-visible{color:var(--accent)}.article-toc a.is-sub{padding-left:12px;font-size:.84rem}.contact-grid{grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px;display:grid}.contact-grid figure{border:1px solid var(--line);background:#ffffff61;margin:0;padding:16px}.contact-grid img{aspect-ratio:1;object-fit:contain;background:#fff;margin:0}.contact-grid figcaption{text-align:center;margin-top:10px;font-size:1rem;font-weight:700}@media (width<=760px){.site-header__inner{flex-wrap:wrap;min-height:72px;padding:10px 0}.nav-toggle{display:block}.site-nav{border-top:1px solid var(--line);flex-direction:column;align-items:stretch;gap:14px;width:100%;padding:14px 0 8px;display:none}.site-nav.is-open{display:flex}.site-nav__primary,.site-nav__secondary{flex-wrap:wrap;gap:12px 18px}.site-nav__secondary{border-left:0;border-top:1px solid var(--line);margin-left:0;padding-top:12px;padding-left:0}.home-hero{grid-template-columns:1fr}.home-hero__copy{padding:8px 0 4px}.home-hero__image,.home-hero__image img{max-height:240px}.lab-stats{grid-template-columns:repeat(2,1fr)}.lab-stats>div,.lab-stats>div:first-child{border:0;border-bottom:1px solid var(--line);text-align:center;align-items:center;min-height:96px}.lab-stats>div:last-child{grid-column:1/-1}.topic-row{grid-template-columns:85px minmax(0,1fr)}.topic-row__state{border:0;grid-column:2;margin-bottom:18px;padding:0}.evidence-row{grid-template-columns:100px minmax(0,1fr) 90px;gap:12px;padding:14px 0}.evidence-row>span,.evidence-row>a,.evidence-row>span:last-child{display:none}.proof-path{grid-template-columns:repeat(2,1fr)}.proof-path>b{display:none}.proof-path>a{grid-column:2}.practice-feature{grid-template-columns:1fr}.article-shell,.article-shell:not(:has(>.article-toc)){grid-template-columns:1fr;justify-content:stretch}.article-shell>.article-toc,.article-shell>.article{grid-column:1}.article-toc{border-bottom:1px solid var(--line);margin-bottom:8px;padding:0 0 16px;position:static}}@media (width<=640px){.site-header__inner,.home-hero,.lab-stats,.section-page,.article-shell{width:min(calc(100% - 32px), var(--max))}.site-brand{font-size:1.05rem}.site-brand img{width:38px;height:38px}.site-nav{gap:12px}.site-nav__link{width:calc(50% - 10px)}.home-hero{grid-template-columns:1fr;gap:14px;min-height:0;margin-top:8px}.home-hero h1{font-size:clamp(2.1rem,9vw,2.55rem)}.home-hero__copy{padding:4px 0 0}.home-hero__copy>p{margin-top:10px}.home-hero__actions,.open-callout__actions{flex-direction:column}.home-hero__image,.home-hero__image img{min-height:0;max-height:200px}.lab-stats{grid-template-columns:1fr 1fr}.lab-stats strong{font-size:2rem}.home-section,.proof-path{width:min(100% - 32px,1136px)}.home-section{padding-top:22px}.home-section__header--split{align-items:flex-start}.home-section__header--split>a{display:none}.topic-filters{flex-wrap:nowrap;gap:12px;overflow-x:auto}.topic-filters button{white-space:nowrap}.topic-row{grid-template-columns:58px minmax(0,1fr);align-items:start;padding:22px 0}.topic-row__number{font-size:2.6rem}.topic-row:first-child .topic-row__number{font-size:3.5rem}.topic-row__body{padding:0 0 10px 12px}.topic-row h3{font-size:1.45rem}.topic-row__state{grid-column:2;margin:0 0 0 12px}.evidence-row{grid-template-columns:82px minmax(0,1fr)}.evidence-row strong{grid-column:2;justify-self:start}.proof-path{grid-template-columns:1fr;padding-top:32px}.proof-path>a{grid-column:1;justify-self:start}.practice-feature{gap:24px;padding:34px 16px}.open-callout{flex-direction:column;align-items:stretch;width:min(100% - 32px,1120px);padding:28px 0 18px}.site-footer{text-align:center;grid-template-columns:1fr;gap:6px;width:100%;padding:.35cm 16px}.site-footer>span,.site-footer strong{grid-column:1;justify-self:center}.section-hero{grid-template-columns:1fr;padding:28px 0 18px}.section-hero h1{font-size:clamp(1.4rem,7.5vw,1.95rem)}.entry-row{grid-template-columns:48px minmax(0,1fr);padding:12px 0}.entry-list__number{font-size:1.2rem}.entry-list h2{font-size:.95rem}.entry-list__body{padding:0 0 8px 12px}.entry-list__state{border:0;grid-column:2;min-height:0;margin-left:12px;padding:0}.article-shell{padding:32px 0 28px}.article h1{font-size:clamp(1.4rem,6.5vw,1.85rem)}.article-lead{font-size:.98rem}.prose{margin-top:22px;font-size:.94rem}.prose h2{margin:1.05em 0 .35em;font-size:1.28rem}.prose p,.prose ul,.prose ol{margin:.5em 0}.contact-grid{grid-template-columns:1fr}.back-to-top{width:46px;height:46px;bottom:.35cm;right:127.386px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}
