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.brand{font:700 2.55rem/1.2 'Playfair Display',Georgia,serif;letter-spacing:-.04em;text-decoration:none}
.brand span{margin-left:.18em;font-weight:400}
.beta-label{font-size:.82rem;letter-spacing:.04em;color:var(--muted,#57544e)}
.visitor-counter{display:grid;grid-template-columns:auto auto;column-gap:.65rem;align-items:baseline;text-decoration:none;font-size:.78rem;text-align:right;min-height:44px}
.visitor-counter strong{font-size:1.3rem;font-variant-numeric:tabular-nums}.visitor-counter small{grid-column:1/-1;color:var(--muted,#57544e);font-size:.7rem}
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.article-toc{padding:1.3rem 0;border-block:1px solid var(--line,#c9c4b8)}.article-toc p{font-size:.85rem;margin-top:0}.article-toc ol{columns:2;gap:2rem;padding-left:1.2rem;line-height:1.8}.article-toc li{break-inside:avoid;padding:.25rem 0}.article-section{scroll-margin-top:1.5rem}
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.home-library{margin-top:1rem}.archive-opening{padding-bottom:.5rem}.archive-opening h1{font-size:clamp(2.1rem,4.3vw,3.2rem)}
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.beta-main{max-width:1120px;margin:0 auto;padding:3rem 1.5rem 5rem}
.beta-opening{display:grid;grid-template-columns:minmax(0,2fr) minmax(220px,1fr);gap:4rem;align-items:start;padding:1.5rem 0 4rem;border-bottom:1px solid var(--line,#c9c4b8)}
.beta-opening h1{font-size:clamp(2.2rem,4.5vw,3.9rem);line-height:1.22;letter-spacing:-.035em;max-width:19ch;text-wrap:balance}
.beta-opening .intro{font-size:1.4rem;line-height:1.65;margin:1.3rem 0}
.beta-deck{max-width:60ch;line-height:1.8}
.beta-reading-guide{padding-top:1.6rem;border-top:2px solid currentColor;margin-top:.4rem}
.beta-reading-guide h2{font-size:1.1rem;margin:0 0 1rem}
.beta-reading-guide p,.beta-reading-guide li{font-size:.96rem;line-height:1.8}
.beta-reading-guide ol{padding-left:1.3rem;margin:1.3rem 0}
.beta-next,.beta-principles,.beta-study{margin-top:3.7rem}
.beta-next>p,.beta-principles>p{max-width:68ch;line-height:1.85}
.beta-question-list{list-style:none;padding:0;display:grid;gap:0;margin:1.5rem 0}
.beta-question-list>li{border-top:1px solid var(--line,#c9c4b8);padding:1.65rem 0;max-width:76ch;scroll-margin-top:1.5rem}
.beta-question-list h3{font-size:1.16rem;line-height:1.65;margin:0 0 .7rem}
.beta-question-list dl{display:grid;grid-template-columns:9rem minmax(0,1fr);gap:.65rem 1.4rem;font-size:.96rem;line-height:1.8}
.beta-question-list dd{margin:0}.beta-question-list dt{font-weight:650}
.beta-main .reading-article{max-width:850px;margin:0 auto}.beta-main .article-section{margin:3rem 0}
.beta-main .claim{margin:1.35rem 0}.beta-main .claim p{font-size:1.07rem;line-height:1.95;max-width:73ch}
.beta-main .claim-evidence{display:inline-block;font-size:.82rem;margin-top:.05rem;text-underline-offset:.22em}
.beta-main .claim details{margin:.55rem 0;font-size:.9rem}.beta-main .claim details p{font-size:.9rem;line-height:1.8}
.beta-main .article-header{margin:1.5rem 0 3rem}.beta-main .article-header h1{font-size:clamp(2rem,4.5vw,3.4rem);line-height:1.25;text-wrap:balance}
.beta-main .article-links{display:flex;flex-wrap:wrap;gap:1.5rem;margin:1.5rem 0}
.article-glossary{margin:1.4rem 0;font-size:.95rem}.article-glossary summary{min-height:44px;padding:.5rem 0;cursor:pointer}.article-glossary dl{display:grid;grid-template-columns:7rem minmax(0,1fr);gap:.7rem 1.2rem;line-height:1.8}.article-glossary dt{font-weight:650}.article-glossary dd{margin:0}.reference-photo{margin:2.5rem 0}.reference-photo img{display:block;width:100%;height:auto}.reference-photo figcaption{line-height:1.8;font-size:.94rem}.reference-photo .fine{font-size:.8rem}.reference-photo a{display:inline-block;min-height:28px}@media(max-width:600px){.article-glossary dl{grid-template-columns:1fr;gap:.25rem}.article-glossary dd{margin-bottom:.7rem}}
.beta-main .evidence-claim{border-top:1px solid var(--line,#c9c4b8);padding:1.6rem 0;scroll-margin-top:1.4rem;max-width:76ch}
.beta-main .evidence-claim p{line-height:1.85}.beta-main .evidence-section{margin:3rem 0}
.beta-source-list{padding-left:1.2rem}.beta-source-list li{padding:.5rem 0;line-height:1.7}
.beta-main a,.site-header a,.site-footer a{text-underline-offset:.2em;overflow-wrap:anywhere}
.beta-main time{overflow-wrap:anywhere}.beta-main .counter-note{padding:1.6rem 0;border-block:1px solid var(--line,#c9c4b8);margin:3rem 0}
.beta-main .counter-note h2{font-size:1.3rem}.beta-main .counter-note p{line-height:1.9}
.site-header .main-nav{display:flex;gap:1.6rem;flex-wrap:wrap;padding:.6rem 0}.site-header .main-nav a{font-size:.96rem;min-height:44px;display:inline-flex;align-items:center}
.site-header .main-nav a[aria-current=page]{font-weight:750}.site-footer nav{display:flex;gap:1.4rem;flex-wrap:wrap}
@media(max-width:700px){.site-header,.site-footer{padding-left:1.1rem;padding-right:1.1rem}.brand{font-size:2rem}.beta-main h1,.beta-main h2,.beta-main h3{overflow-wrap:anywhere}.site-header .main-nav{justify-content:flex-start}}
@media(max-width:700px){.beta-main{padding:1.6rem 1.1rem 3rem}.beta-opening{grid-template-columns:1fr;gap:2.2rem;padding:1rem 0 2.5rem}.beta-opening h1{max-width:100%;font-size:2.3rem}.beta-opening .intro{font-size:1.17rem}.beta-reading-guide{margin:0;padding-top:1.2rem}.beta-reading-guide ol{display:flex;flex-wrap:wrap;gap:.2rem 1.6rem;list-style:none;padding:0}.beta-question-list dl{grid-template-columns:1fr;gap:.3rem}.beta-question-list dd{margin-bottom:.8rem}.site-header .main-nav{gap:1.2rem}.beta-label{font-size:.72rem}.beta-main .claim p{font-size:1rem;line-height:1.95}.beta-main .article-header h1{font-size:2.05rem}}
@media(max-width:700px){.masthead .brand{font-size:clamp(1.4rem,6vw,2rem)}.home-library{margin-top:1rem}.archive-opening h1{font-size:2.1rem}}

.followup-calendar{margin:2.5rem 0 4rem}.release-list{list-style:none;padding:0;margin:1rem 0}.release-list>li{display:grid;grid-template-columns:12rem minmax(0,1fr);gap:1.8rem;padding:1.3rem 0;border-top:1px solid var(--line)}.release-list time{display:block;font-weight:700;font-variant-numeric:tabular-nums}.release-list h3{margin:0 0 .4rem;font-size:1.1rem}.release-list a{font-size:.9rem}.release-related{display:block;margin-top:.6rem}.release-list .fine{display:block;margin-top:.4rem}.followup-questions>.beta-study{margin:2.5rem 0}.beta-study>h3{font-size:1.3rem;max-width:48ch;line-height:1.5}.followup-question summary{font-size:1rem;font-weight:650;cursor:pointer;min-height:44px;padding:.75rem 0;line-height:1.65}.followup-question[open] summary{color:var(--accent)}.followup-detail{padding:.3rem 0 1rem;max-width:70ch}.next-check{padding:.8rem 0;border-block:1px solid var(--line);font-size:.92rem}.next-check strong{display:block;margin-bottom:.35rem}.followup-question dd{margin-left:0}.beta-question-list>li:target{outline:2px solid var(--accent);outline-offset:5px}.followup-calendar a,.followup-detail>a{display:inline-block;min-height:44px;padding:.4rem 0}.release-list a.release-related{display:block}@media(max-width:640px){.release-list>li{grid-template-columns:1fr;gap:.7rem}.release-list>li>div:first-child{display:flex;justify-content:space-between;align-items:baseline;gap:.6rem;flex-wrap:wrap}.release-list time{font-size:1rem}.release-list .fine{font-size:.78rem}.followup-calendar{margin-bottom:3rem}.beta-study>h3{font-size:1.12rem}.followup-question summary{font-size:.98rem}}

.public-ad[hidden]{display:none}.public-ad{margin:36px 0;text-align:center;min-width:0}.public-ad>p{font-size:11px;color:var(--muted);margin:0 0 8px}.public-ad ins{display:block}

/* Language sits above the visitor total at the right of the masthead. */
.header-tools{display:flex;flex-direction:column;align-items:flex-end;gap:0;flex-shrink:0;padding:0}.header-tools .visitor-counter,.header-tools .language-switch{display:inline-flex;align-items:center;gap:.4rem;min-height:24px;font-size:.85rem;font-weight:400;line-height:1.5;text-align:left;text-decoration:none;color:var(--muted,#57544e)}.header-tools .visitor-counter strong{font-size:inherit;font-weight:400}.header-tools .language-switch:hover{text-decoration:underline}.masthead{align-items:center}
@media(max-width:700px){.header-tools .visitor-counter,.header-tools .language-switch{font-size:.8rem}}

@media(max-width:700px){html[lang=ko] .site-header .main-nav{justify-content:space-between;gap:.3rem}html[lang=ko] .site-header .main-nav a{font-size:.84rem;white-space:nowrap}}
@media(max-width:360px){html[lang=ko] .site-header .main-nav a{font-size:.78rem}}

.home-library{margin-top:0}.home-library .section-heading{align-items:baseline;margin-bottom:.4rem}.home-library .section-heading h1{font-size:1.35rem;line-height:1.5;margin:0}.home-date{margin:0 0 1rem}