/* Omnia: BJSM traditional Chinese exercise review page. All selectors scoped to #bj or bj- classes. */
#bj{--ink:#16202E;--navy:#223348;--teal:#7397A8;--tide:#2E6B72;--sand:#E7DDCB;--mist:#F2F3F0;--line:rgba(34,51,72,.14);--low:#C9BFAE;--vlow:#B7BDC4;
 --fd:"Fraunces",Georgia,serif;--fb:"Hanken Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
 display:block;position:relative;background:var(--mist);color:var(--ink);font-family:var(--fb);font-size:18px;line-height:1.6;overflow-x:clip;-webkit-font-smoothing:antialiased}
:where(#bj) *{box-sizing:border-box}
:where(#bj) :is(h1,h2,h3){font-family:var(--fd);font-weight:350;margin:0;letter-spacing:-.015em;line-height:1.08;color:inherit;font-variation-settings:"opsz" 96}
:where(#bj) h2{font-size:clamp(2rem,4.2vw,3.3rem);max-width:20ch}
:where(#bj) h3{font-size:1.3rem;line-height:1.25;font-variation-settings:"opsz" 24}
:where(#bj) p{margin:0 0 1em}
:where(#bj) a{color:inherit}
:where(#bj) :is(a,button,input):focus-visible{outline:2px solid var(--tide);outline-offset:3px;border-radius:4px}
.bj-col{width:min(100% - 3rem,1160px);margin-inline:auto}
.bj-read{max-width:62ch}
.bj-sec{padding:clamp(4.5rem,10vw,8rem) 0;border-top:1px solid var(--line)}
.bj-kicker{font-size:.95rem;font-weight:600;color:var(--tide);margin:0 0 1rem;letter-spacing:.01em}
.bj-lede{font-size:clamp(1.1rem,1.6vw,1.3rem);line-height:1.55;color:rgba(22,32,46,.8);max-width:58ch}
.bj-small{font-size:.86rem;color:rgba(22,32,46,.62)}
.bj-num{font-variant-numeric:tabular-nums}

/* ---------- hero: distillation ---------- */
.bj-hero{background:var(--ink);color:#EEF1F2;position:relative}
.bj-open{padding:clamp(4rem,9vw,7rem) 0 clamp(2rem,5vw,3rem)}
.bj-open h1{font-size:clamp(2.5rem,6.4vw,5.4rem);max-width:15ch;font-weight:300;line-height:1.02}
.bj-open .bj-lede{color:rgba(238,241,242,.74);margin-top:1.6rem}
.bj-open .bj-kicker{color:var(--teal)}
.bj-cite{margin-top:1.4rem;font-size:.9rem;color:rgba(238,241,242,.55)}
.bj-cite a{color:rgba(238,241,242,.85)}
.bj-dist{height:480vh;position:relative}
.bj-stick{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:center}
.bj-canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.bj-say{position:relative;z-index:2;padding-left:max(1.5rem,calc((100vw - 1160px)/2));padding-right:1.5rem}
.bj-step{position:absolute;left:max(1.5rem,calc((100vw - 1160px)/2));right:1.5rem;max-width:30rem;top:50%;transform:translateY(calc(-50% + 18px));opacity:0;transition:opacity .6s ease,transform .6s ease}
.bj-step.on{opacity:1;transform:translateY(-50%)}
.bj-step b{display:block;font-family:var(--fd);font-weight:300;font-size:clamp(3rem,7vw,5.6rem);line-height:1;letter-spacing:-.03em;color:#fff;font-variant-numeric:tabular-nums}
.bj-step>span{display:block;font-family:var(--fd);font-size:clamp(1.3rem,2.2vw,1.75rem);line-height:1.2;margin:.5rem 0 .9rem;color:#fff}
.bj-step p{color:rgba(238,241,242,.72);font-size:1rem;max-width:34ch}
.bj-key{display:flex;flex-wrap:wrap;gap:.4rem 1.1rem;margin-top:.8rem;font-size:.85rem;color:rgba(238,241,242,.8)}
.bj-key i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:.4rem;vertical-align:-1px}
.bj-prog{position:absolute;left:max(1.5rem,calc((100vw - 1160px)/2));bottom:2rem;display:flex;gap:6px;z-index:2}
.bj-prog i{width:28px;height:2px;background:rgba(238,241,242,.2);transition:background .4s}
.bj-prog i.on{background:var(--teal)}

/* ---------- burden ---------- */
.bj-burden{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,6vw,5rem);align-items:end}
.bj-big{font-family:var(--fd);font-weight:300;font-size:clamp(3.6rem,9vw,7.5rem);line-height:.95;letter-spacing:-.04em;color:var(--navy)}
.bj-big small{display:block;font-family:var(--fb);font-size:1rem;letter-spacing:0;line-height:1.5;color:rgba(22,32,46,.72);margin-top:1rem;max-width:30ch}

/* ---------- forms strip ---------- */
.bj-strip{display:flex;height:84px;margin:2.6rem 0 1.2rem;border-radius:6px;overflow:hidden;gap:2px}
.bj-strip button{all:unset;cursor:pointer;position:relative;background:var(--sand);transition:background .25s,flex-grow .4s;min-width:10px}
.bj-strip button:hover,.bj-strip button[aria-pressed=true]{background:var(--tide)}
.bj-strip button[aria-pressed=true]{background:var(--navy)}
.bj-strip button span{position:absolute;left:.7rem;bottom:.55rem;font-size:.8rem;font-weight:600;color:var(--navy);white-space:nowrap}
.bj-strip button[aria-pressed=true] span,.bj-strip button:hover span{color:#fff}
.bj-strip button.bj-thin span{display:none}
.bj-form-out{min-height:5.5rem;display:grid;grid-template-columns:minmax(0,16rem) minmax(0,1fr);gap:1.4rem;align-items:start}
.bj-form-out h3{font-size:1.6rem}
.bj-form-out .bj-share{font-size:.9rem;color:var(--tide);font-weight:600;margin-top:.3rem}

/* ---------- certainty ---------- */
.bj-cert{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,6vw,5rem);margin-top:2.8rem}
.bj-ladder{display:flex;flex-direction:column;gap:.9rem}
.bj-rung{display:grid;grid-template-columns:7.5rem minmax(0,1fr) 3.4rem;gap:.9rem;align-items:center;font-size:.95rem}
.bj-rung .bar{height:14px;background:rgba(34,51,72,.07);border-radius:3px;overflow:hidden}
.bj-rung .bar i{display:block;height:100%;width:0;border-radius:3px;transition:width 1.2s cubic-bezier(.2,.7,.2,1)}
.bj-rung b{font-variant-numeric:tabular-nums;text-align:right;font-weight:600}
.bj-grade dt{font-weight:600;color:var(--navy);margin-top:1rem}
.bj-grade dd{margin:.2rem 0 0;color:rgba(22,32,46,.75)}

/* ---------- explorer ---------- */
.bj-exp{display:grid;grid-template-columns:minmax(0,15rem) minmax(0,1fr);gap:clamp(1.5rem,4vw,3.5rem);margin-top:2.8rem;align-items:start}
.bj-conds{display:flex;flex-direction:column;gap:2px}
.bj-exp>div:first-child{position:sticky;top:6rem}
.bj-conds-cap{margin:0 0 .6rem .9rem}
.bj-conds button{all:unset;cursor:pointer;padding:.7rem .9rem;border-radius:5px;font-size:.98rem;display:flex;justify-content:space-between;gap:.6rem;color:var(--navy)}
.bj-conds button:hover{background:rgba(115,151,168,.14)}
.bj-conds button[aria-selected=true]{background:var(--navy);color:#fff}
.bj-conds button em{font-style:normal;font-size:.78rem;opacity:.7;white-space:nowrap}
.bj-panel[hidden]{display:none}
.bj-panel>p{color:rgba(22,32,46,.75);max-width:60ch}
.bj-f{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,15rem);gap:1rem 2rem;padding:1.3rem 0;border-top:1px solid var(--line)}
.bj-f:last-child{border-bottom:1px solid var(--line)}
.bj-f h3{font-family:var(--fb);font-weight:500;font-size:1.05rem;letter-spacing:0;line-height:1.45}
.bj-tag{display:inline-block;font-size:.78rem;font-weight:600;padding:.12rem .55rem;border-radius:99px;margin-bottom:.45rem}
.bj-tag.h{background:var(--tide);color:#fff}
.bj-tag.m{background:rgba(115,151,168,.25);color:var(--navy)}
.bj-fine{font-size:.8rem;color:rgba(22,32,46,.56);margin-top:.35rem;font-variant-numeric:tabular-nums}
.bj-meter{align-self:center}
.bj-meter svg{width:100%;height:auto;display:block;overflow:visible}
.bj-meter .lbl{font-size:.74rem;color:rgba(22,32,46,.6);margin-top:.25rem}
.bj-note{font-size:.9rem;color:rgba(22,32,46,.7);background:rgba(231,221,203,.55);border-radius:6px;padding:.9rem 1.1rem;margin-top:1.4rem;max-width:62ch}

/* ---------- dose ---------- */
.bj-dose{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,6vw,5rem);margin-top:2.6rem;align-items:start}
.bj-ctl{margin-bottom:1.8rem}
.bj-ctl label{display:flex;justify-content:space-between;font-weight:600;color:var(--navy);margin-bottom:.4rem}
.bj-ctl output{font-variant-numeric:tabular-nums;color:var(--tide)}
.bj-ctl input[type=range]{width:100%;accent-color:var(--tide)}
.bj-bands{display:grid;gap:0}
.bj-band{padding:.9rem 0 1rem;border-top:1px solid var(--line)}
.bj-band .t{font-size:.85rem;color:rgba(22,32,46,.6)}
.bj-band .v{font-family:var(--fd);font-size:1.5rem;color:var(--navy);margin-top:.1rem}
.bj-band .s{display:flex;gap:4px;margin-top:.6rem}
.bj-band .s i{flex:1;height:5px;border-radius:3px;background:rgba(34,51,72,.1);transition:background .3s}
.bj-band .s i.on{background:var(--tide)}
.bj-verdict{margin-top:1.3rem;padding:1.2rem 1.3rem;border-left:3px solid var(--tide);background:rgba(46,107,114,.07);font-size:1rem}

/* ---------- mechanisms + limits ---------- */
.bj-three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.5rem,4vw,3rem);margin-top:2.6rem}
.bj-three h3{margin-bottom:.6rem}
.bj-three p{color:rgba(22,32,46,.74);font-size:.98rem}
.bj-limits{list-style:none;padding:0;margin:2rem 0 0;max-width:66ch}
.bj-limits li{padding:1rem 0;border-top:1px solid var(--line);color:rgba(22,32,46,.8)}
.bj-limits li strong{color:var(--navy)}

/* ---------- omnia ---------- */
.bj-omnia{background:var(--navy);color:#EEF1F2;border-top:0}
.bj-omnia .bj-kicker{color:var(--teal)}
.bj-omnia .bj-lede{color:rgba(238,241,242,.76)}
.bj-docs{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;margin-top:2.6rem}
.bj-doc{display:grid;grid-template-columns:88px minmax(0,1fr);gap:1.2rem;align-items:start;padding:1.4rem;border:1px solid rgba(238,241,242,.16);border-radius:8px}
.bj-doc img{width:88px;height:88px;border-radius:50%;object-fit:cover;object-position:50% 12%}
.bj-doc h3{font-size:1.35rem;color:#fff}
.bj-doc p{font-size:.95rem;color:rgba(238,241,242,.72);margin:.4rem 0 .9rem}
.bj-acts{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:2.4rem}
.bj-btn{display:inline-flex;align-items:center;justify-content:center;padding:.85rem 1.35rem;border-radius:6px;font-weight:600;font-size:.97rem;text-decoration:none;border:0;cursor:pointer;transition:background .2s,color .2s,box-shadow .2s}
.bj-btn.pri{background:var(--sand);color:var(--navy)}
.bj-btn.pri:hover{background:#fff}
.bj-btn.sec{background:transparent;color:#EEF1F2;box-shadow:inset 0 0 0 1.5px rgba(238,241,242,.4)}
.bj-btn.sec:hover{box-shadow:inset 0 0 0 1.5px #fff}
.bj-btn.sm{padding:.55rem .95rem;font-size:.88rem}
.bj-link{font-size:.9rem;font-weight:600;color:var(--teal)!important;margin-left:.9rem}

/* ---------- sources ---------- */
.bj-src ol{padding-left:1.2rem;font-size:.9rem;color:rgba(22,32,46,.75);max-width:78ch}
.bj-src li{margin-bottom:.7rem}
.bj-src a{color:var(--tide)}
.bj-disc{font-size:.85rem;color:rgba(22,32,46,.58);max-width:78ch;margin-top:1.6rem}

@media (max-width:900px){
 #bj{font-size:17px}
 .bj-stick{grid-template-columns:1fr;align-items:end}
 .bj-step{top:auto;bottom:4.5rem;transform:translateY(18px);background:linear-gradient(transparent,rgba(22,32,46,.92) 22%);padding:2.5rem 0 0}
 .bj-step.on{transform:none}
 .bj-step b{font-size:clamp(2.6rem,13vw,3.6rem)}
 .bj-burden,.bj-cert,.bj-exp,.bj-dose,.bj-docs{grid-template-columns:1fr}
 .bj-three{grid-template-columns:1fr}
 .bj-conds{position:static;flex-direction:row;overflow-x:auto;padding-bottom:.4rem;scrollbar-width:thin}
 .bj-conds button{white-space:nowrap}
 .bj-conds button em{display:none}
 .bj-f{grid-template-columns:1fr}
 .bj-form-out{grid-template-columns:1fr}
 .bj-strip{height:64px}
 .bj-strip button span{display:none}
}
@media (prefers-reduced-motion:reduce){
 .bj-dist{height:auto}
 .bj-stick{position:relative;height:auto;display:block;padding:2rem 0 3rem}
 .bj-canvas{position:relative;height:60vh}
 .bj-step{position:relative;left:auto;right:auto;top:auto;bottom:auto;transform:none;opacity:1;margin:0 1.5rem 2rem;background:none;padding:0}
 .bj-prog{display:none}
 .bj-rung .bar i{transition:none}
}

.bj-intro{max-width:36rem}
.bj-intro h1{font-size:clamp(2.3rem,4.4vw,4.1rem);font-weight:300;line-height:1.03;color:#fff}
.bj-intro .bj-lede{color:rgba(238,241,242,.74);font-size:clamp(1rem,1.3vw,1.15rem);margin-top:1.3rem;max-width:34rem}
.bj-cite{margin-top:1rem;font-size:.85rem;color:rgba(238,241,242,.55)!important}
.bj-cite a{color:rgba(238,241,242,.85)}
.bj-minor button{all:unset;cursor:pointer;color:var(--tide);font-weight:600;text-decoration:underline;text-underline-offset:2px}
.bj-minor button:focus-visible{outline:2px solid var(--tide);outline-offset:2px}
@media (max-width:900px){
 .bj-exp>div:first-child{position:static}
 .bj-conds-cap{margin-left:0}
 .bj-intro h1{font-size:clamp(2rem,8.6vw,2.8rem)}
 .bj-intro .bj-lede{font-size:.98rem;margin-top:.9rem}
 .bj-intro .bj-cite{display:none}
}