.bell-article{--ink:#233c31;--green:#426342;--muted:#687365;--paper:#faf8f1;--line:#d7ddcd;--gold:#bd9753;--wash:#edf1e4}
.bell-article *{box-sizing:border-box}
.bell-article{margin:0;color:var(--ink);background:var(--paper);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:18px;line-height:1.8}
.bell-article a{color:#315d36;text-decoration-thickness:1px;text-underline-offset:4px}
.bell-article a:hover{text-decoration-thickness:2px}
.bell-article a:focus-visible,.bell-article summary:focus-visible,.bell-article input:focus-visible{outline:3px solid var(--gold);outline-offset:4px}
main.bell-main{max-width:848px;margin:auto;padding:44px 30px 50px}
.bell-article .eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:12px;font-weight:700;color:#756141;margin:0 0 14px}
.bell-article .byline{color:var(--muted);font-size:14px;margin:0 0 28px}
.bell-article .byline a{color:inherit}
.bell-article .byline span::before{content:" · "}
.bell-article h1,.bell-article h2,.bell-article h3{color:#405738;line-height:1.25}
.bell-article h1,.bell-article h2{font-family:Georgia,"Times New Roman",serif;letter-spacing:-.02em}
.bell-article h1{font-size:clamp(34px,5vw,50px);max-width:780px;margin:0 0 14px}
.bell-article h2{font-size:30px;margin:0 0 20px}
.bell-article h3{font-size:20px;margin:30px 0 12px}
.bell-article p{margin:0 0 20px}
.bell-article li{margin:10px 0}
.bell-article ul,.bell-article ol{padding-left:23px}
.bell-article strong{font-weight:700}
.bell-article section{margin-top:48px;scroll-margin-top:20px}
.bell-article .quiet{font-size:14px;color:var(--muted);line-height:1.6}
.bell-article .opening-map{margin:32px 0;border-top:2px solid var(--gold);border-bottom:1px solid var(--line);padding:22px 0}
.bell-article .opening-map figcaption{margin:0 0 20px}
.bell-article .opening-map figcaption .eyebrow{display:block;margin-bottom:4px}
.bell-article .opening-map figcaption strong{display:block;font:700 27px/1.3 Georgia,serif;color:#405738}
.bell-article .lanes{display:grid;grid-template-columns:1fr;gap:12px}
.bell-article .lane{display:grid;grid-template-columns:1fr 42px 1fr;align-items:center}
.bell-article .person{padding:8px 16px;border-left:3px solid var(--gold);font-size:16px;line-height:1.6}
.bell-article .person b{font-size:20px;font-weight:650}
.bell-article .join{color:#9b7c44;font-size:28px;text-align:center}
.bell-article .wait{border:1px solid #c8d5b6;border-radius:30px;padding:12px;text-align:center;background:var(--wash);font-weight:650}
.bell-article .map-takeaway{margin:20px 0 6px;font-size:17px}
.bell-article .opening-map .quiet{margin:0}
.bell-article .doc-nhanh{background:var(--wash);border-left:3px solid var(--green);padding:22px 24px;margin-top:30px}
.bell-article .doc-nhanh h2{font-size:25px;margin-bottom:12px}
.bell-article .doc-nhanh ul{margin:0}
.bell-article .doc-nhanh li{margin:9px 0}
.bell-article .article-nav{margin:22px 0 38px;display:flex;gap:4px 20px;flex-wrap:wrap;align-items:center;font-size:14px}
.bell-article .article-nav>span{color:var(--muted);flex-basis:100%;font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.bell-article .article-nav a{display:inline-flex;min-height:44px;align-items:center}
.bell-article .decision-paths{border-block:1px solid var(--line);padding:16px 0;margin:26px 0}
.bell-article .decision-paths p{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0 0 16px;font-size:16px}
.bell-article .decision-paths p:last-child{margin:0}
.bell-article .path-label{width:100%;font-size:13px;color:var(--muted)}
.bell-article .decision-paths strong{background:var(--wash);padding:2px 8px;border-radius:4px}
.bell-article .decision-paths i{font-style:normal;color:#98773f}
.bell-article .case-lines{margin:24px 0;border-top:1px solid var(--line)}
.bell-article .case-line{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:baseline;border-bottom:1px solid var(--line);padding:13px 0}
.bell-article .case-line b{width:34px;height:34px;border:1px solid var(--gold);border-radius:50%;text-align:center;line-height:32px;font-family:Georgia,serif}
.bell-article .case-line p{margin:0}
.bell-article .try-choice{min-width:0;margin:26px 0 20px;padding:22px;border:1px solid #a8b394;border-radius:10px;background:#f1f3e9}
.bell-article .try-choice legend{padding:0 7px;font-weight:700}
.bell-article .options{display:grid;gap:8px}
.bell-article .options label{display:flex;gap:12px;align-items:center;min-height:52px;padding:11px 13px;border:1px solid #c8d2bd;border-radius:6px;background:#fffdf8;cursor:pointer;font-size:16px;line-height:1.55}
.bell-article .options input{accent-color:var(--green);width:19px;height:19px;flex:0 0 19px;margin:0}
.bell-article .options label:has(input:checked){border-color:var(--green);background:#e8eedc;box-shadow:inset 3px 0 var(--green)}
.bell-article .feedback{margin:18px 0 0;padding-top:15px;border-top:1px solid #c2cdb5;font-size:16px;line-height:1.75}
.bell-article .feedback p{margin:7px 0 0}
.bell-article .before-choice{display:none;margin:16px 0 0;font-size:14px;color:var(--muted)}
@supports  selector(:has(*)){.bell-article .feedback{display:none}
.bell-article .before-choice{display:block}
.bell-article .try-choice:has(input:checked) .before-choice{display:none}
.bell-article .try-choice:has(#choose-a:checked) .f-a,.bell-article .try-choice:has(#choose-b:checked) .f-b,.bell-article .try-choice:has(#choose-c:checked) .f-c,.bell-article .try-choice:has(#choose-start:checked) .f-start{display:block}}
.bell-article .classroom{max-width:540px;margin:26px auto}
.bell-article .classroom img{display:block;width:100%;height:auto;border-radius:4px}
.bell-article .classroom figcaption{font-size:13px;line-height:1.65;color:var(--muted);margin-top:9px}
.bell-article .hoi-nguoi-hoc h3{border-left:3px solid var(--gold);padding-left:14px}
.bell-article .tu-kiem ol{list-style:none;counter-reset:check;padding:0}
.bell-article .tu-kiem li{counter-increment:check;position:relative;padding:12px 0 12px 40px;margin:0;border-bottom:1px solid var(--line)}
.bell-article .tu-kiem li::before{content:counter(check);position:absolute;left:0;top:13px;font-family:Georgia,serif;color:#98733d;font-size:24px}
.bell-article .doc-tiep{border-top:1px solid var(--line);padding-top:24px}
.bell-article .doc-tiep ul{list-style:none;padding:0}
.bell-article .doc-tiep li{padding:10px 0;border-bottom:1px solid var(--line)}
.bell-article .footnote{font-size:13px;line-height:1.65;color:var(--muted)}
.bell-article .footnote a{overflow-wrap:anywhere}
.bell-article hr{border:0;border-top:1px solid var(--line);margin:28px 0}
@media (min-width:1000px){.bell-article .lanes{max-width:630px;margin:auto}
.bell-article .opening-map{padding:26px 22px}
.bell-article .decision-paths .path-label{width:180px;flex-shrink:0}}
@media (max-width:600px){.bell-article{font-size:17px;line-height:1.8}
main.bell-main{padding:26px 20px 44px}
.bell-article h1{font-size:35px}
.bell-article h2{font-size:27px}
.bell-article h3{font-size:20px}
.bell-article .eyebrow{font-size:11px}
.bell-article .byline{font-size:13px}
.bell-article .byline span{display:block}
.bell-article .byline span::before{content:""}
.bell-article .opening-map{margin:27px 0;padding:20px 0}
.bell-article .opening-map figcaption strong{font-size:25px}
.bell-article .lane{grid-template-columns:1fr 24px 1fr}
.bell-article .person{padding:5px 9px;font-size:14px}
.bell-article .person b{font-size:17px}
.bell-article .join{font-size:24px}
.bell-article .wait{font-size:15px;padding:10px 5px}
.bell-article .map-takeaway{font-size:16px}
.bell-article .doc-nhanh{padding:18px 16px}
.bell-article .doc-nhanh h2{font-size:24px}
.bell-article .article-nav{gap:3px 14px}
.bell-article .try-choice{padding:15px}
.bell-article .try-choice legend{font-size:16px;max-width:100%}
.bell-article .options label{font-size:15px}
.bell-article .case-line{gap:7px;grid-template-columns:35px 1fr}
.bell-article .decision-paths p{font-size:15px}
.bell-article .quiet{font-size:13px}
.bell-article section{margin-top:38px}}
@media (prefers-reduced-motion:reduce){}
.bell-article .hook{margin:4px 0 34px;padding:22px 18px 20px;border:1px solid #d9cfb8;border-radius:14px;background:linear-gradient(180deg,#fffaf0,#f2eddd);position:relative}
.bell-article .hook-tag{margin:0 0 4px;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:#8a6d3b;font-weight:700}
.bell-article .hook-title{font:700 24px/1.3 Georgia,"Times New Roman",serif;color:#3c5434;margin:0 0 18px}
.bell-article .reveal-toggle{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.bell-article .pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bell-article .who{display:flex;flex-direction:column;align-items:center;text-align:center;min-width:0}
.bell-article .thought{position:relative;width:100%;min-height:104px;padding:10px 10px 12px;border-radius:16px;background:#fff;border:1px solid #d8d2c2;font-size:15px;line-height:1.5;margin-bottom:16px}
.bell-article .thought::after{content:"";position:absolute;left:50%;bottom:-8px;width:14px;height:14px;background:#fff;border-right:1px solid #d8d2c2;border-bottom:1px solid #d8d2c2;transform:translateX(-50%) rotate(45deg)}
.bell-article .t-label{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:4px;font-style:normal}
.bell-article .t-text{display:block;font-style:italic;filter:blur(5px);transition:filter .35s;user-select:none}
.bell-article .reveal-toggle:checked~.pair .t-text{filter:none;user-select:auto}
.bell-article .bowl{width:100%;max-width:120px;height:auto}
.bell-article .hand{margin:6px 0 0;font-size:14px;line-height:1.45;color:var(--muted)}
.bell-article .hand b{display:block;color:var(--ink);font-size:16px}
.bell-article .reveal-btn{display:flex;justify-content:center;align-items:center;min-height:48px;margin:18px auto 0;max-width:320px;border-radius:999px;background:#3f6b4a;color:#fff;font-weight:650;cursor:pointer;font-size:16px;padding:0 18px}
.bell-article .reveal-btn .hide{display:none}
.bell-article .reveal-toggle:checked~.reveal-btn .show{display:none}
.bell-article .reveal-toggle:checked~.reveal-btn .hide{display:inline}
.bell-article .reveal-toggle:focus-visible~.reveal-btn{outline:3px solid var(--gold);outline-offset:3px}
.bell-article .punch{margin:20px 0 8px;font:400 21px/1.5 Georgia,"Times New Roman",serif;text-align:center;color:#33493a}
.bell-article .punch strong{color:#3f6b4a}
.bell-article .hook .quiet{text-align:center;margin:0}
.bell-article .scale{margin:26px 0;padding:0}
.bell-article .scale ol{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.bell-article .scale li{position:relative;margin:0;padding:12px 12px 12px 22px}
.bell-article .scale li b{display:block;font-size:17px}
.bell-article .scale li span{display:block;font-size:15px;line-height:1.6;color:#4d5a4b}
.bell-article .scale li::before{content:"";position:absolute;left:-7px;top:19px;width:12px;height:12px;border-radius:50%;background:#bd9753}
.bell-article .scale .s1::before{box-shadow:0 0 0 7px rgba(189,151,83,.28)}
.bell-article .scale .s2::before{opacity:.72;box-shadow:0 0 0 4px rgba(189,151,83,.18)}
.bell-article .scale .s3::before{opacity:.42}
.bell-article .scale .s4::before{opacity:.14}
.bell-article .scale .here{background:#e8eedc;border-radius:0 8px 8px 0}
.bell-article .scale .here::before{opacity:1;background:#3f6b4a}
.bell-article .scale .here em{display:inline-block;margin-top:6px;font-style:normal;font-size:13px;font-weight:700;color:#fff;background:#3f6b4a;border-radius:999px;padding:3px 10px}
.bell-article .scale figcaption{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.6}
.bell-article .swap-card{margin:22px 0;padding:16px 18px;border:1px solid var(--line);border-radius:10px;background:#fff}
.bell-article .hoi-nguoi-hoc .swap-card h3{margin:0 0 10px;font:700 13px/1.4 system-ui,-apple-system,sans-serif;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border:0;padding:0}
.bell-article .swap{display:grid;gap:4px;margin:0 0 12px}
.bell-article .swap s{color:#b4694f;text-decoration-thickness:2px;font-size:16px}
.bell-article .swap .arrow{color:#98773f;font-size:18px;line-height:1}
.bell-article .swap strong{display:block;font:700 19px/1.45 Georgia,"Times New Roman",serif;color:#3f6b4a;border-left:3px solid #3f6b4a;padding-left:10px}
.bell-article .swap-card p{margin:0;font-size:15px;line-height:1.7;color:#4d5a4b}
.bell-article .tu-kiem .tick-list{list-style:none;padding:0;margin:0 0 20px;border-top:1px solid var(--line)}
.bell-article .tu-kiem .tick-list li{margin:0;padding:0;border-bottom:1px solid var(--line)}
.bell-article .tu-kiem .tick-list li::before{content:none}
.bell-article .tick-list label{display:flex;gap:12px;align-items:flex-start;padding:13px 4px;cursor:pointer;min-height:48px}
.bell-article .tick-list input{width:20px;height:20px;margin-top:5px;accent-color:#3f6b4a;flex:0 0 20px}
.bell-article .tick-list input:checked+span{color:var(--muted)}
@media (max-width:600px){.bell-article .hook{padding:18px 14px 18px}
.bell-article .hook-title{font-size:22px}
.bell-article .pair{gap:10px}
.bell-article .thought{font-size:14px;min-height:118px;padding:9px 8px 11px}
.bell-article .punch{font-size:19px}
.bell-article .swap strong{font-size:18px}}
@media (prefers-reduced-motion:reduce){.bell-article .t-text{transition:none}}
.bell-article>p{max-width:72ch}
.bell-article .unit{margin-top:38px}
.bell-article .unit>p{max-width:72ch}
.bell-article blockquote{margin:24px 0;padding:4px 0 4px 20px;border-left:3px solid var(--gold);font:700 24px/1.5 Georgia,serif;color:var(--green)}
.bell-article blockquote p{margin:0}
.bell-article .faq-extra{margin:34px 0 0;border-block:1px solid var(--line);padding:14px 0}
.bell-article .faq-extra summary{cursor:pointer;font-weight:650;min-height:44px;line-height:44px}
.bell-article .faq-extra h3{font-size:19px}
.bell-article .faq-extra p{font-size:16px}
@media (max-width:600px){.bell-article blockquote{font-size:23px}
.bell-article .unit{margin-top:32px}}
/* Site typography: match the established 200H breathing article VI/EN, not the special DV157 preview.
   Scope remains on the two bell articles; keep shared header/footer and content unchanged. */
body.bell-page{background:var(--cream,#E0ECDA)}
body.bell-page:lang(en){background:#fbfaf5}
.article.bell-article:lang(en){--paper:#fbfaf5;font-family:"Quicksand",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:1.03rem;line-height:1.85}
main.bell-main{max-width:920px;margin:auto;padding:40px 6% 50px}
main.bell-main:lang(en){max-width:860px}
.article.bell-article{--ink:#16402d;--paper:var(--cream,#E0ECDA);--green:#4A5D3E;max-width:none;margin:0;padding:0;background:var(--paper);font-family:"Quicksand",sans-serif;font-size:1.01rem;line-height:1.8;color:var(--ink)}
.bell-article p,.bell-article li{font-size:inherit;color:inherit}
.bell-article p{margin:0 0 1rem}
.bell-article ul,.bell-article ol{margin:0 0 1rem;color:inherit}
.bell-article .unit{margin-top:2.5rem}
.bell-article h1,.bell-article h2{font-family:"Cormorant Garamond",serif;font-weight:500;letter-spacing:1px;color:#2c3527}
.bell-article h1{font-size:2.8rem;line-height:1.2;margin:0 0 .6rem}
.bell-article h2{font-size:1.85rem;line-height:1.8;margin:0 0 .7rem}
.bell-article:lang(en) h2{line-height:1.25}
.bell-article:lang(en) h1,.bell-article:lang(en) h2{color:#0a462c}
.bell-article h3{font-family:"Cormorant Garamond",serif;font-size:1.4rem;line-height:1.45;color:#16402d}
.bell-article .eyebrow{font-size:.8rem;letter-spacing:.13em;color:#526444;margin:0 0 .6rem;line-height:1.65}
.bell-article .byline{font-size:.88rem;margin:0 0 1.5rem;color:#16402d}
.bell-article .hook{background:#faf8ef;border-color:#b8c5ab;border-radius:22px}
.bell-article .hook-title{font-family:"Cormorant Garamond",serif;font-size:1.85rem;line-height:1.25;font-weight:500;letter-spacing:1px;color:#2c3527;margin:0 0 .7rem}
.bell-article:lang(en) .hook-title{color:#0a462c}
.bell-article .thought{font-size:15px}
.bell-article .hand{font-size:14px}
.bell-article .hand b{font-size:16px}
.bell-article .hook-tag{font-size:.72rem;letter-spacing:.08em;color:#526444}
.bell-article .scale ol{margin:0}
.bell-article .scale li{font-size:15px}
.bell-article .before-choice{font-size:14px}
.bell-article .feedback{font-size:16px}
.bell-article .faq-extra p{font-size:16px}
.bell-article .footnote p,.bell-article .footnote li{font-size:13px}
.bell-article blockquote{font:400 1.05rem/1.8 "Quicksand",sans-serif;color:#16402d}
.bell-article blockquote p{font:inherit;margin:0}
.bell-article .author-card p{font-size:14px}
.bell-article .series-breadcrumb{font-size:13px;margin:0 0 18px;letter-spacing:0}
.bell-article [id]{scroll-margin-top:110px}
.bell-article .author-card img{max-width:64px}
.bell-article .doc-tiep a{overflow-wrap:anywhere}
.bell-page .global-nav ul,.bell-page .global-nav li{margin:0}
.bell-page .global-nav .dropdown::before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px}
.bell-article .reveal-btn{font-family:inherit;line-height:1.45;padding:10px 18px;text-align:center}
.bell-article .punch{font-family:inherit;font-size:inherit;line-height:inherit;letter-spacing:normal}
@media(max-width:768px){.bell-article h1{font-size:1.9rem}.bell-article h2,.bell-article .hook-title{font-size:1.55rem}.bell-article:lang(en) h1{font-size:2rem}.bell-article:lang(en) h2,.bell-article:lang(en) .hook-title{font-size:1.6rem}}
@media(max-width:600px){main.bell-main{padding:28px 6% 44px}.bell-article .thought{font-size:14px}.bell-article .byline{font-size:13px}}