@font-face{font-family:"Fraunces";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/fraunces-latin-400-normal.woff2") format("woff2");}
@font-face{font-family:"Fraunces";font-style:italic;font-weight:400;font-display:swap;src:url("../fonts/fraunces-latin-400-italic.woff2") format("woff2");}
@font-face{font-family:"Fraunces";font-style:normal;font-weight:500;font-display:swap;src:url("../fonts/fraunces-latin-500-normal.woff2") format("woff2");}
@font-face{font-family:"Fraunces";font-style:italic;font-weight:500;font-display:swap;src:url("../fonts/fraunces-latin-500-italic.woff2") format("woff2");}
@font-face{font-family:"Fraunces";font-style:normal;font-weight:600;font-display:swap;src:url("../fonts/fraunces-latin-600-normal.woff2") format("woff2");}
@font-face{font-family:"Newsreader";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/newsreader-latin-400-normal.woff2") format("woff2");}
@font-face{font-family:"Newsreader";font-style:italic;font-weight:400;font-display:swap;src:url("../fonts/newsreader-latin-400-italic.woff2") format("woff2");}
@font-face{font-family:"Newsreader";font-style:normal;font-weight:500;font-display:swap;src:url("../fonts/newsreader-latin-500-normal.woff2") format("woff2");}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url("../fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:600;font-display:swap;src:url("../fonts/ibm-plex-mono-latin-600-normal.woff2") format("woff2");}

:root{
  --paper:#f5f3ec;
  --raised:#fbfaf5;
  --ink:#172530;
  --ink-soft:#41545d;
  --ink-faint:#6c7b81;
  --line:#ddd7c8;
  --line-strong:#cabfa8;
  --accent:#1d6f78;
  --accent-deep:#13525a;
  --brass:#a9792b;
  --ok:#2f7d52;
  --hint:#bb8616;
  --contested:#a23c34;
  --shadow:0 1px 2px rgba(23,37,48,.05),0 8px 30px -16px rgba(23,37,48,.22);
  --measure:42rem;
}
:root[data-theme="dark"]{
  --paper:#0d141a;
  --raised:#131d24;
  --ink:#e9e4d6;
  --ink-soft:#a6b4ba;
  --ink-faint:#7d8d94;
  --line:#26333b;
  --line-strong:#34444d;
  --accent:#4fb6c0;
  --accent-deep:#4fb6c0;
  --brass:#d4a648;
  --ok:#5cbd84;
  --hint:#e2b441;
  --contested:#dd6a60;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 40px -20px rgba(0,0,0,.7);
}
@media (prefers-color-scheme: dark){
  :root[data-theme="auto"]{
    --paper:#0d141a;--raised:#131d24;--ink:#e9e4d6;--ink-soft:#a6b4ba;--ink-faint:#7d8d94;
    --line:#26333b;--line-strong:#34444d;--accent:#4fb6c0;--accent-deep:#4fb6c0;--brass:#d4a648;
    --ok:#5cbd84;--hint:#e2b441;--contested:#dd6a60;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 14px 40px -20px rgba(0,0,0,.7);
  }
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
html[lang^="zh"]{
  text-autospace: normal;
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Newsreader",Georgia,serif;
  font-size:clamp(1.06rem,.55rem + 1.05vw,1.2rem);
  line-height:1.78;
  transition:background .3s ease,color .3s ease;
}
::selection{background:rgba(29,111,120,.22);}
a{color:var(--accent);text-decoration:none;border-bottom:1px solid color-mix(in srgb,var(--accent) 35%,transparent);}
a:hover{border-bottom-color:var(--accent);}
.skip-link{position:absolute;left:-999px;top:.5rem;background:var(--raised);padding:.45rem .7rem;z-index:50;}
.skip-link:focus{left:.5rem;}
.wrap{max-width:var(--measure);margin:0 auto;padding:0 1.35rem;}
.wide{max-width:50rem;}

.site-topbar{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.topbar-row{max-width:58rem;margin:0 auto;padding:.6rem 1.35rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);}
.course{display:flex;align-items:center;gap:.6rem;color:var(--ink-soft);border-bottom:0;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent);}
.topnav{display:flex;gap:.75rem;align-items:center;flex-wrap:wrap;}
.topnav a{color:var(--ink-faint);border-bottom:0;}
.topnav a:hover{color:var(--ink);}
.top-actions{display:flex;gap:.4rem;align-items:center;flex-wrap:wrap;justify-content:flex-end;}
.toggle{appearance:none;display:inline-flex;align-items:center;justify-content:center;min-height:1.8rem;line-height:1;white-space:nowrap;cursor:pointer;border:1px solid var(--line-strong);background:var(--raised);color:var(--ink-soft);font-family:inherit;font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;padding:.34rem .6rem;border-radius:999px;}
.toggle:hover{color:var(--ink);border-color:var(--accent);}
.theme-toggle{gap:.18rem;min-width:2.7rem;padding:.34rem .45rem;}
.theme-icon{width:.82rem;height:.82rem;display:block;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2;flex:0 0 auto;}
.download-strip{border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--brass) 6%,transparent);font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;}
.download-strip .wide{display:flex;gap:.8rem;align-items:center;padding-top:.45rem;padding-bottom:.45rem;color:var(--ink-faint);}

header.hero,.page-hero{padding-top:3.2rem;padding-bottom:1.2rem;}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin:0 0 .9rem;}
.daymark{color:var(--brass);}
h1{font-family:"Fraunces",serif;font-weight:600;font-size:clamp(2.15rem,1.1rem + 4.6vw,3.7rem);line-height:1.04;margin:.2rem 0 .1rem;}
h1 em{font-style:italic;color:var(--accent-deep);}
h1 u{color:var(--accent-deep);text-decoration:underline;}
.sub{font-family:"Fraunces",serif;font-style:italic;font-weight:400;font-size:clamp(1.15rem,.8rem + 1vw,1.5rem);color:var(--ink-soft);margin:.4rem 0 0;line-height:1.4;}
.page-hero .sub{margin-bottom:1.4rem;}
.book-credit .credit-line{display:block;}
.hero-clock,.hero-sun,.hero-art{margin:2.4rem auto 1.6rem;max-width:30rem;text-align:center;}
.clockwrap,.sunwrap{position:relative;display:block;width:100%;}
.hero-clock svg,.hero-sun svg,.hero-art svg{display:block;width:100%;height:auto;}
.stopped-tag,.sun-tag{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.13em;text-transform:uppercase;color:var(--brass);margin-top:.6rem;display:block;}
.stopped-tag{color:var(--contested);}
.hero-art figcaption{font-family:"IBM Plex Mono",monospace;font-size:.7rem;color:var(--ink-faint);margin-top:.55rem;letter-spacing:.04em;line-height:1.5;}
.lesson-figure{margin:1.8rem auto;max-width:42rem;}
.lesson-figure.is-portrait{max-width:28rem;}
.lesson-figure img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:8px;background:var(--raised);box-shadow:var(--shadow);}
.lesson-figure figcaption{font-family:"IBM Plex Mono",monospace;font-size:.72rem;line-height:1.55;letter-spacing:.04em;color:var(--ink-faint);margin-top:.6rem;}
.aside .lesson-figure{margin:1rem auto .15rem;}
.lede{font-size:1.26em;line-height:1.62;color:var(--accent-deep);}
.lede .drop{float:left;font-family:"Fraunces",serif;font-weight:600;font-size:3.5em;line-height:.74;padding:.06em .12em 0 0;color:var(--accent-deep);}

.whereblock{border-left:3px solid var(--brass);background:linear-gradient(to right,color-mix(in srgb,var(--brass) 7%,transparent),transparent 70%);padding:1rem 1.2rem;margin:2.2rem 0;border-radius:0 8px 8px 0;}
.whereblock .label{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--brass);margin:0 0 .4rem;}
.whereblock p{margin:.3rem 0;font-size:.97em;color:var(--ink-soft);}
section{margin:3rem 0;}
.sec-eyebrow{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint);display:flex;align-items:center;gap:.7rem;margin:0 0 .55rem;}
.sec-eyebrow::before{content:"";width:1.7rem;height:1px;background:var(--accent);}
h2{font-family:"Fraunces",serif;font-weight:600;font-size:clamp(1.5rem,1rem + 2vw,2.05rem);line-height:1.1;margin:.1rem 0 1rem;}
h3{font-family:"Fraunces",serif;font-weight:600;font-size:1.28rem;margin:2rem 0 .5rem;}
p{margin:0 0 1.15rem;}
ul,ol{padding-left:1.35rem;}
li{margin:.35rem 0;}
strong{font-weight:600;color:var(--ink);}
.term{color:var(--accent-deep);font-weight:500;}
em.term{font-style:italic;}
u.term{font-style:normal;text-decoration:underline;}
blockquote{margin:1.8rem 0;padding:.2rem 0 .2rem 1.3rem;border-left:2px solid var(--line-strong);font-family:"Fraunces",serif;font-style:italic;font-size:1.22em;line-height:1.5;color:var(--ink);}
blockquote .src{display:block;font-family:"IBM Plex Mono",monospace;font-style:normal;font-size:.62em;letter-spacing:.05em;color:var(--ink-faint);margin-top:.6rem;}
.aside,.panel,.format-alt{background:var(--raised);border:1px solid var(--line);border-radius:10px;padding:1.1rem 1.25rem;margin:1.8rem 0;box-shadow:var(--shadow);font-size:.95em;}
.panel{border-radius:14px;padding:1.5rem 1.4rem 1.6rem;margin:2rem 0;}
.aside .h,.recap .h,.tomorrow .h,.panel .ptitle,.format-alt .ptitle{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.15em;text-transform:uppercase;color:var(--accent);margin:0 0 .5rem;}
.panel h4,.format-alt h4{font-family:"Fraunces",serif;font-weight:600;font-size:1.3rem;margin:.1rem 0 .3rem;}
.panel .pnote,.format-alt .pnote{font-size:.9em;color:var(--ink-soft);margin:0 0 1.1rem;}

.chip{display:inline-flex;align-items:center;gap:.42rem;font-family:"IBM Plex Mono",monospace;font-size:.66rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;padding:.2rem .55rem;border-radius:999px;border:1px solid;white-space:nowrap;vertical-align:middle;}
.chip i,.chip-dot{width:7px;height:7px;border-radius:50%;display:inline-block;}
.chip.ok{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 45%,transparent);background:color-mix(in srgb,var(--ok) 9%,transparent);}
.chip.ok i,.chip.ok .chip-dot{background:var(--ok);}
.chip.hint{color:var(--hint);border-color:color-mix(in srgb,var(--hint) 45%,transparent);background:color-mix(in srgb,var(--hint) 9%,transparent);}
.chip.hint i,.chip.hint .chip-dot{background:var(--hint);}
.chip.bad{color:var(--contested);border-color:color-mix(in srgb,var(--contested) 45%,transparent);background:color-mix(in srgb,var(--contested) 9%,transparent);}
.chip.bad i,.chip.bad .chip-dot{background:var(--contested);}

.gm-grid,.lab-grid{display:grid;grid-template-columns:1fr;gap:1.3rem;align-items:start;}
@media(min-width:640px){.gm-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);}.lab-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);}}
.switches,.claimlist{display:flex;flex-direction:column;gap:.55rem;}
.swbtn,.clbtn{display:flex;align-items:center;gap:.75rem;width:100%;text-align:left;cursor:pointer;background:var(--paper);border:1px solid var(--line-strong);border-radius:10px;padding:.6rem .7rem;font-family:inherit;color:var(--ink);transition:border-color .2s,background .2s;}
.clbtn{align-items:flex-start;gap:.6rem;line-height:1.3;}
.swbtn:hover,.clbtn:hover{border-color:var(--accent);}
.swbtn .knob{flex:0 0 auto;width:38px;height:22px;border-radius:999px;background:var(--line-strong);position:relative;transition:background .25s;}
.swbtn .knob::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .25s;box-shadow:0 1px 2px rgba(0,0,0,.3);}
.swbtn[aria-checked="true"] .knob{background:var(--accent);}
.swbtn[aria-checked="true"] .knob::after{transform:translateX(16px);}
.swbtn.luck[aria-checked="true"] .knob{background:var(--contested);}
.swbtn .lab{display:flex;flex-direction:column;line-height:1.25;}
.swbtn .lab b{font-weight:600;font-size:1rem;}
.swbtn .lab span{font-size:.8em;color:var(--ink-faint);}
.presets{margin-top:1rem;}
.presets .h{font-family:"IBM Plex Mono",monospace;font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 .45rem;}
.pbtns{display:flex;flex-wrap:wrap;gap:.4rem;}
.pbtn{cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:.7rem;background:transparent;border:1px dashed var(--line-strong);color:var(--ink-soft);border-radius:8px;padding:.35rem .55rem;}
.venn-box{text-align:center;}
.venn-box svg,.tri svg{width:100%;height:auto;}
.verdict{margin-top:.6rem;border-top:1px dashed var(--line);padding-top:.85rem;text-align:left;}
.vstate{font-family:"Fraunces",serif;font-weight:600;font-size:1.18rem;display:flex;align-items:center;gap:.5rem;line-height:1.2;}
.vstate.know{color:var(--ok);}
.vstate.no{color:var(--contested);}
.vexpl{font-size:.92em;color:var(--ink-soft);margin:.4rem 0 0;min-height:2.6em;}
.story{font-size:.88em;color:var(--ink-faint);margin:.55rem 0 0;font-style:italic;}
.regress-map{display:grid;gap:1rem;margin-top:1rem;}
.regress-chain{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr) auto minmax(0,1fr);gap:.55rem;align-items:stretch;}
.rnode{border:1px solid var(--line-strong);border-radius:10px;background:var(--paper);padding:.75rem .8rem;min-height:4.6rem;display:flex;flex-direction:column;justify-content:center;gap:.25rem;text-align:center;}
.rnode.strong{border-color:var(--accent);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 38%,transparent);}
.rnode b{font-family:"Fraunces",serif;font-size:1.04rem;line-height:1.1;}
.rnode span{font-family:"IBM Plex Mono",monospace;font-size:.82rem;color:var(--ink-soft);line-height:1.35;overflow-wrap:anywhere;}
.rstep{display:flex;align-items:center;justify-content:center;color:var(--ink-faint);font-size:1.45rem;font-family:"IBM Plex Mono",monospace;}
.regress-outcomes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.65rem;}
.routcome{border:1px solid color-mix(in srgb,var(--brass) 48%,var(--line));background:color-mix(in srgb,var(--brass) 8%,transparent);border-radius:10px;padding:.75rem .8rem;min-height:7rem;}
.routcome span{font-family:"IBM Plex Mono",monospace;color:var(--brass);font-size:1.25rem;font-weight:700;}
.routcome b{display:block;margin:.25rem 0;font-family:"Fraunces",serif;line-height:1.18;}
.routcome p{margin:0;font-size:.88em;color:var(--ink-soft);line-height:1.45;}
.tri-key{display:grid;grid-template-columns:1fr;gap:.6rem;margin-top:1.1rem;}
@media(min-width:560px){.tri-key{grid-template-columns:1fr 1fr;}}
.tri-key .k{font-size:.9em;border-left:2px solid var(--accent);padding-left:.7rem;}
.cred-controls{display:flex;flex-direction:column;gap:1.15rem;}
.slider-row label{display:flex;justify-content:space-between;font-family:"IBM Plex Mono",monospace;font-size:.78rem;letter-spacing:.04em;margin-bottom:.35rem;color:var(--ink-soft);}
.slider-row label .val{color:var(--accent);font-weight:600;}
input[type=range]{appearance:none;width:100%;height:6px;border-radius:999px;background:var(--line-strong);outline:none;}
input[type=range]::-webkit-slider-thumb{appearance:none;width:20px;height:20px;border-radius:50%;background:var(--accent);border:3px solid var(--raised);box-shadow:var(--shadow);cursor:pointer;}
.sumbar{margin-top:.3rem;height:30px;border-radius:8px;background:var(--paper);border:1px solid var(--line-strong);position:relative;overflow:hidden;display:flex;}
.sumbar .seg{height:100%;}
.sumbar .seg.s{background:color-mix(in srgb,var(--accent) 55%,transparent);}
.sumbar .seg.n{background:color-mix(in srgb,var(--brass) 50%,transparent);}
.sumbar .one-line{position:absolute;top:-3px;bottom:-3px;left:50%;width:2px;background:var(--ink);opacity:.55;}
.sum-readout{font-family:"IBM Plex Mono",monospace;font-size:.82rem;margin-top:.5rem;display:flex;justify-content:space-between;color:var(--ink-soft);}
.ledger{margin-top:1rem;border-radius:10px;padding:.85rem 1rem;font-size:.92em;border:1px solid;}
.ledger.coherent{border-color:color-mix(in srgb,var(--ok) 45%,transparent);background:color-mix(in srgb,var(--ok) 8%,transparent);}
.ledger.dutch{border-color:color-mix(in srgb,var(--contested) 45%,transparent);background:color-mix(in srgb,var(--contested) 8%,transparent);}
.snap{margin-top:.85rem;cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.06em;background:transparent;border:1px solid var(--line-strong);color:var(--ink-soft);border-radius:8px;padding:.4rem .7rem;}
.tbtns{display:flex;flex-wrap:wrap;gap:.45rem;justify-content:center;margin:0 0 1rem;}
.tbtn{cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:.72rem;background:transparent;border:1px solid var(--line-strong);color:var(--ink-soft);border-radius:8px;padding:.4rem .65rem;transition:border-color .2s,color .2s,background .2s;}
.tbtn:hover{border-color:var(--accent);color:var(--ink);}
.tbtn[aria-pressed="true"]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--ink);}
.echo-wrap{text-align:center;}
.echo-wrap svg{width:100%;max-width:430px;height:auto;}
.echo-action{margin:.2rem 0 1rem;}
.echo-action button{cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:.74rem;letter-spacing:.04em;background:color-mix(in srgb,var(--brass) 14%,transparent);border:1px solid color-mix(in srgb,var(--brass) 50%,transparent);color:var(--ink);border-radius:9px;padding:.5rem .8rem;}
.echo-action button:hover{border-color:var(--brass);}
.echo-msg{margin-top:.6rem;border-radius:10px;border:1px solid var(--line);background:var(--paper);padding:.85rem 1rem;font-size:.92em;line-height:1.55;min-height:4.4em;text-align:left;}
.echo-msg .ttl{font-family:"Fraunces",serif;font-weight:600;font-size:1.08rem;display:block;margin-bottom:.25rem;}
.echo-msg.pop .ttl{color:var(--ok);}
.echo-msg.reinforce .ttl{color:var(--contested);}
.echo-msg.neutral .ttl{color:var(--accent-deep);}
.acc-grid{display:grid;grid-template-columns:1fr;gap:1.3rem;align-items:start;}
@media(min-width:640px){.acc-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);}}
.acc-plot{text-align:center;}
.acc-plot svg{width:100%;max-width:320px;height:auto;}
.acc-ledger{margin-top:.4rem;border-radius:10px;padding:.85rem 1rem;font-size:.9em;border:1px solid;line-height:1.5;}
.acc-ledger.coherent{border-color:color-mix(in srgb,var(--ok) 45%,transparent);background:color-mix(in srgb,var(--ok) 8%,transparent);}
.acc-ledger.dom{border-color:color-mix(in srgb,var(--contested) 45%,transparent);background:color-mix(in srgb,var(--contested) 8%,transparent);}
.acc-ledger .lh{font-family:"IBM Plex Mono",monospace;font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;margin:0 0 .4rem;}
.acc-ledger.coherent .lh{color:var(--ok);}
.acc-ledger.dom .lh{color:var(--contested);}
.acc-ledger p:last-child{margin:0;}
.clbtn[aria-pressed="true"]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,transparent);}
.clbtn .ci{flex:0 0 auto;font-family:"IBM Plex Mono",monospace;font-size:.95rem;width:1.4rem;height:1.4rem;border-radius:6px;display:flex;align-items:center;justify-content:center;background:var(--raised);border:1px solid var(--line-strong);}
.clbtn[aria-pressed="true"] .ci{background:var(--accent);color:#fff;border-color:var(--accent);}
.clbtn .cl{font-size:.92rem;}
.clbtn .cl span{display:block;font-size:.78em;color:var(--ink-faint);margin-top:.1rem;}
.verdict-card{background:var(--paper);border:1px solid var(--line-strong);border-radius:12px;padding:1.1rem 1.15rem;min-height:15rem;}
.vc-claim{font-family:"Fraunces",serif;font-style:italic;font-size:1.12rem;line-height:1.4;color:var(--ink);margin:0 0 1rem;padding-bottom:.85rem;border-bottom:1px dashed var(--line);}
.vc-row{display:flex;align-items:baseline;gap:.6rem;margin:.55rem 0;font-size:.9em;}
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.sources{font-size:.86em;color:var(--ink-soft);}
.sources h2{color:var(--ink);}
.sources ol{padding-left:1.3rem;margin:0;}
.sources li{margin:0 0 .7rem;line-height:1.5;}
.sources .meta{color:var(--ink-faint);}
hr.div{border:none;border-top:1px solid var(--line);margin:3rem 0;}
.endcap{text-align:center;font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);padding:1.5rem 0 3rem;}
.endcap .gleam{color:var(--brass);}
.format-alt{border-style:dashed;}
.epub-only,.print-only,.format-alt{display:none;}

.deep-dive{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:2.6rem 0;padding:.2rem 0;}
.deep-dive>summary{cursor:pointer;list-style:none;padding:1rem 0;display:grid;gap:.2rem;}
.deep-dive>summary::-webkit-details-marker{display:none;}
.deep-dive>summary::before{content:"+";grid-row:1 / span 3;align-self:center;justify-self:end;font-family:"IBM Plex Mono",monospace;color:var(--brass);border:1px solid var(--line-strong);border-radius:999px;width:1.45rem;height:1.45rem;display:flex;align-items:center;justify-content:center;}
.deep-dive[open]>summary::before{content:"-";}
.deep-dive-title{font-family:"Fraunces",serif;font-size:1.55rem;line-height:1.1;font-weight:600;color:var(--ink);}
.deep-dive-sub{color:var(--ink-soft);font-style:italic;line-height:1.35;max-width:36rem;}
.deep-dive-body{padding:1rem 0 1.4rem;}
.continues{border-left:3px solid var(--accent);background:linear-gradient(to right,color-mix(in srgb,var(--accent) 8%,transparent),transparent 70%);padding:1rem 1.2rem;margin:2.2rem 0;border-radius:0 8px 8px 0;}
.continues .label{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin:0 0 .4rem;}
.continues p{margin:.3rem 0;font-size:.97em;color:var(--ink-soft);}
.roadmap{background:var(--raised);border:1px solid var(--line);border-radius:12px;padding:1.2rem 1.35rem;margin:2rem 0;box-shadow:var(--shadow);}
.roadmap .h{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.15em;text-transform:uppercase;color:var(--brass);margin:0 0 .7rem;}
.roadmap ol{margin:0;padding-left:1.2rem;font-size:.95em;color:var(--ink-soft);}
.roadmap li{margin:.3rem 0;}
.roadmap li b{color:var(--ink);font-weight:600;}
.sec-eyebrow .n{color:var(--brass);}
.cm-arg{display:flex;flex-direction:column;gap:.55rem;margin-bottom:1.1rem;}
.cm-line{display:flex;gap:.7rem;align-items:flex-start;border:1px solid var(--line-strong);border-radius:10px;background:var(--paper);padding:.65rem .8rem;transition:opacity .25s,border-color .25s,background .25s;}
.cm-line .pn{font-family:"IBM Plex Mono",monospace;font-size:.72rem;color:var(--brass);flex:0 0 auto;padding-top:.15rem;width:1.6rem;}
.cm-line .pt{font-size:.94em;line-height:1.45;}
.cm-line.struck{opacity:.4;}
.cm-line.struck .pt{text-decoration:line-through;text-decoration-color:var(--contested);text-decoration-thickness:2px;}
.cm-line.concl{border-style:dashed;border-color:var(--accent);background:color-mix(in srgb,var(--accent) 7%,transparent);}
.cm-exits .h{font-family:"IBM Plex Mono",monospace;font-size:.64rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin:.2rem 0 .5rem;}
.cm-btns,.mr-btns{display:flex;flex-wrap:wrap;gap:.45rem;}
.cm-btn,.mr-btn{cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:.72rem;background:transparent;border:1px solid var(--line-strong);color:var(--ink-soft);border-radius:8px;padding:.4rem .65rem;transition:border-color .2s,color .2s,background .2s;}
.cm-btn:hover,.mr-btn:hover{border-color:var(--accent);color:var(--ink);}
.cm-btn[aria-pressed="true"],.mr-btn[aria-pressed="true"]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,transparent);color:var(--ink);}
.cm-out{margin-top:1.1rem;border-radius:10px;border:1px solid var(--line);background:var(--paper);padding:.9rem 1rem;font-size:.92em;line-height:1.55;min-height:4em;}
.cm-out .who{font-family:"Fraunces",serif;font-weight:600;font-size:1.1rem;color:var(--accent-deep);display:block;margin-bottom:.25rem;}
.sd-case{border:1px solid var(--line-strong);border-radius:10px;background:var(--paper);padding:.9rem 1rem;margin:0 0 1.1rem;font-size:.95em;line-height:1.55;min-height:3.4em;}
input[type=range].stakes-range{background:linear-gradient(to right,var(--ok),var(--hint) 55%,var(--contested));}
.errtoggle{display:flex;align-items:center;gap:.7rem;margin:1rem 0 .2rem;cursor:pointer;width:100%;text-align:left;background:transparent;border:0;font-family:inherit;color:var(--ink);padding:0;}
.errtoggle .knob{flex:0 0 auto;width:38px;height:22px;border-radius:999px;background:var(--line-strong);position:relative;transition:background .25s;}
.errtoggle .knob::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .25s;box-shadow:0 1px 2px rgba(0,0,0,.3);}
.errtoggle[aria-checked="true"] .knob{background:var(--contested);}
.errtoggle[aria-checked="true"] .knob::after{transform:translateX(16px);}
.errtoggle .lab{font-size:.92em;line-height:1.3;}
.errtoggle .lab span{display:block;font-size:.8em;color:var(--ink-faint);}
.sd-verdict{margin-top:1.2rem;border-top:1px dashed var(--line);padding-top:1rem;}
.sd-verdict .vstate{font-family:"Fraunces",serif;font-weight:600;font-size:1.2rem;display:flex;align-items:center;gap:.5rem;line-height:1.2;}
.sd-verdict .vstate.know{color:var(--ok);}
.sd-verdict .vstate.no{color:var(--contested);}
.sd-readings{margin-top:.9rem;display:grid;grid-template-columns:1fr;gap:.55rem;}
@media(min-width:560px){.sd-readings{grid-template-columns:1fr 1fr 1fr;}}
.sd-readings .r{font-size:.84em;border-left:2px solid var(--line-strong);padding-left:.65rem;color:var(--ink-soft);}
.sd-readings .r b{font-family:"Fraunces",serif;display:block;color:var(--ink);font-size:1.02em;margin-bottom:.1rem;}
.mr-wrap{text-align:center;}
.mr-wrap svg{width:100%;max-width:380px;height:auto;}
.mr-btns{justify-content:center;margin:0 0 1rem;}
.mr-verdict{margin-top:.4rem;font-family:"Fraunces",serif;font-weight:600;font-size:1.12rem;display:flex;align-items:center;justify-content:center;gap:.5rem;}
.mr-verdict.safe{color:var(--ok);}
.mr-verdict.unsafe{color:var(--contested);}
.mr-expl{font-size:.9em;color:var(--ink-soft);margin:.45rem auto 0;max-width:30rem;min-height:3em;}
.figcap{font-family:"IBM Plex Mono",monospace;font-size:.7rem;color:var(--ink-faint);text-align:center;margin:.5rem 0 0;letter-spacing:.03em;}

.page{padding-bottom:4rem;}
.toc-grid{display:grid;grid-template-columns:1fr;gap:.65rem;margin:2rem 0 1rem;}
.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:1rem;margin:2rem 0;}
.home-actions{grid-template-columns:minmax(0,1.35fr) minmax(14rem,.85fr);align-items:stretch;}
.download-stack{display:grid;grid-template-rows:1fr 1fr;gap:1rem;}
.download-stack .download-card{display:flex;flex-direction:column;justify-content:center;padding:.9rem 1.15rem;}
.downloads-list{grid-template-columns:1fr;gap:1.15rem;}
.day-card,.download-card{border:1px solid var(--line);background:var(--raised);border-radius:8px;padding:1.15rem 1.25rem;box-shadow:var(--shadow);}
.day-card{display:grid;grid-template-columns:7.5rem minmax(0,1fr);gap:.15rem 1rem;align-items:start;padding:1rem 1.15rem;}
.card-kicker{font-family:"IBM Plex Mono",monospace;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--brass);margin:0;}
.day-card .card-kicker{grid-row:1 / span 2;padding-top:.1rem;}
.day-card h2,.day-card h3,.download-card h2{font-size:1.25rem;line-height:1.16;margin:0;}
.day-card h2,.day-card h3{grid-column:2;}
.day-card p:not(.card-kicker),.download-card p:not(.card-kicker){line-height:1.16;margin:.56rem 0 0;color:var(--ink-soft);}
.day-card p:not(.card-kicker){grid-column:2;}
.download-card h2{margin:.2rem 0 0;}
.all-days-link{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;margin:1rem 0 2.75rem;}
.all-days-link a{display:inline-flex;align-items:center;padding:.48rem .72rem;border:1px solid var(--line-strong);border-radius:8px;background:var(--raised);}
.lesson-nav{display:grid;grid-template-columns:minmax(0,1fr) minmax(8.5rem,.62fr) minmax(0,1fr);gap:.7rem;margin-top:1.1rem;margin-bottom:1.4rem;}
.lesson-nav-bottom{margin-top:2.2rem;margin-bottom:3rem;}
.lesson-nav-card{display:flex;flex-direction:column;justify-content:center;gap:.18rem;min-height:4.1rem;border:1px solid var(--line);border-radius:8px;background:var(--raised);box-shadow:var(--shadow);padding:.9rem 1rem;line-height:1.18;}
.lesson-nav-card span{font-family:"IBM Plex Mono",monospace;font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:var(--brass);}
.lesson-nav-card strong{font-family:"Fraunces",serif;font-size:1rem;font-weight:600;color:var(--ink);}
.lesson-nav-card.is-syllabus{text-align:center;}
.lesson-nav-card.is-disabled{box-shadow:none;background:transparent;color:var(--ink-faint);}
.lesson-nav-card.is-disabled strong{color:var(--ink-faint);}
.lesson-nav-card.is-disabled span{color:var(--ink-faint);}
.syllabus-progress{display:grid;grid-template-columns:1fr;gap:1rem;margin:2rem 0 1.4rem;padding:1rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
@media(min-width:640px){.syllabus-progress{grid-template-columns:1fr 1.35fr;}}
.progress-label{font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 .25rem;}
.progress-number,.progress-next{font-family:"Fraunces",serif;font-size:1.22rem;line-height:1.28;margin:0;color:var(--ink);}
.syllabus-block-nav{display:flex;flex-wrap:wrap;gap:.45rem;margin:1.3rem 0 2.4rem;font-family:"IBM Plex Mono",monospace;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;}
.syllabus-block-nav a{border:1px solid var(--line-strong);border-radius:999px;padding:.28rem .55rem;color:var(--ink-soft);background:var(--raised);}
.syllabus-block{border-top:1px solid var(--line);padding-top:2rem;margin:3rem 0;}
.syllabus-days{display:grid;grid-template-columns:1fr;gap:.65rem;margin-top:1.2rem;}
.syllabus-card{box-shadow:none;}
.syllabus-card.is-published{border-color:color-mix(in srgb,var(--accent) 45%,var(--line));background:var(--raised);}
.next-summary{border-top:2px solid var(--brass);padding-top:1.8rem;margin-top:3.5rem;}
.upcoming-list{list-style:none;padding:0;margin:1.2rem 0;}
.upcoming-list li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:.75rem;align-items:baseline;border-top:1px solid var(--line);padding:.6rem 0;margin:0;}
.upcoming-list li:last-child{border-bottom:1px solid var(--line);}
.upcoming-day{color:var(--brass);white-space:nowrap;}
.site-footer{border-top:1px solid var(--line);padding:2rem 0;color:var(--ink-soft);font-size:.9rem;}
.footer-grid{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap;}

::highlight(codex-refiner-selection){
  background:color-mix(in srgb,var(--accent) 24%,transparent);
  color:inherit;
}
::highlight(codex-refiner-running){
  background:color-mix(in srgb,var(--brass) 34%,transparent);
  color:inherit;
}
.codex-refiner[hidden]{display:none!important;}
.codex-refiner{
  position:fixed;
  z-index:80;
  display:grid;
  gap:.55rem;
  padding:.72rem;
  border:1px solid color-mix(in srgb,var(--accent) 44%,var(--line));
  border-radius:8px;
  background:color-mix(in srgb,var(--raised) 96%,transparent);
  color:var(--ink);
  box-shadow:0 14px 38px -22px rgba(23,37,48,.45),0 2px 8px rgba(23,37,48,.12);
  backdrop-filter:blur(12px);
  font-family:"IBM Plex Mono",monospace;
  font-size:.72rem;
  line-height:1.35;
}
.codex-refiner::before{
  content:"";
  position:absolute;
  inset:-1px;
  pointer-events:none;
  border-radius:8px;
  border:1px solid transparent;
}
.codex-refiner[data-state="running"]::before{
  border-color:color-mix(in srgb,var(--brass) 55%,transparent);
  animation:codex-refiner-pulse 1.1s ease-in-out infinite;
}
.codex-refiner-preview{
  max-height:5.4rem;
  overflow:auto;
  padding:.58rem .66rem;
  border:1px solid var(--line);
  border-radius:6px;
  background:var(--paper);
  color:var(--ink-soft);
}
.codex-refiner[data-state="running"] .codex-refiner-preview{
  color:var(--ink);
  border-color:color-mix(in srgb,var(--brass) 44%,var(--line));
  background-image:linear-gradient(105deg,transparent 0%,color-mix(in srgb,var(--brass) 22%,transparent) 45%,transparent 72%);
  background-size:240% 100%;
  animation:codex-refiner-scan 1.15s linear infinite;
}
.codex-refiner-reason{
  width:100%;
  min-height:2rem;
  border:1px solid var(--line-strong);
  border-radius:6px;
  background:var(--raised);
  color:var(--ink);
  font:inherit;
  letter-spacing:0;
  padding:.45rem .54rem;
  outline:none;
}
.codex-refiner-reason:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent);
}
.codex-refiner-actions{
  display:flex;
  align-items:center;
  gap:.55rem;
}
.codex-refiner-submit,
.codex-refiner-close{
  appearance:none;
  cursor:pointer;
  border:1px solid var(--line-strong);
  background:var(--raised);
  color:var(--ink-soft);
  font:inherit;
}
.codex-refiner-submit{
  min-height:2rem;
  padding:.42rem .66rem;
  border-radius:6px;
  color:var(--raised);
  border-color:var(--accent-deep);
  background:var(--accent-deep);
}
.codex-refiner-submit:hover,
.codex-refiner-submit:focus-visible{
  background:var(--accent);
  border-color:var(--accent);
}
.codex-refiner-submit:disabled{
  cursor:progress;
  opacity:.72;
}
.codex-refiner-close{
  position:absolute;
  top:.4rem;
  right:.4rem;
  width:1.45rem;
  height:1.45rem;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  line-height:1;
  padding:0;
}
.codex-refiner-close:hover,
.codex-refiner-close:focus-visible{
  border-color:var(--accent);
  color:var(--ink);
}
.codex-refiner-status{
  min-width:0;
  color:var(--ink-faint);
  font-size:.68rem;
  text-transform:uppercase;
  letter-spacing:.08em;
}
.codex-refiner[data-state="running"] .codex-refiner-status{
  color:var(--brass);
}
.codex-refiner[data-state="done"] .codex-refiner-status{
  color:var(--ok);
}
.codex-refiner[data-state="error"] .codex-refiner-status{
  color:var(--contested);
  text-transform:none;
  letter-spacing:0;
}
.codex-refiner-result{
  border-radius:4px;
  background:color-mix(in srgb,var(--ok) 18%,transparent);
  box-shadow:0 0 0 0 color-mix(in srgb,var(--ok) 42%,transparent);
}
.codex-refiner-result.is-visible{
  animation:codex-refiner-update 2.4s cubic-bezier(.22,1,.36,1) both;
}
@keyframes codex-refiner-scan{
  from{background-position:140% 0;}
  to{background-position:-140% 0;}
}
@keyframes codex-refiner-pulse{
  0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--brass) 18%,transparent);}
  50%{box-shadow:0 0 0 5px color-mix(in srgb,var(--brass) 10%,transparent);}
}
@keyframes codex-refiner-update{
  0%{
    background:color-mix(in srgb,var(--ok) 34%,transparent);
    box-shadow:0 0 0 0 color-mix(in srgb,var(--ok) 52%,transparent);
  }
  18%{
    background:color-mix(in srgb,var(--ok) 28%,transparent);
    box-shadow:0 0 0 8px color-mix(in srgb,var(--ok) 12%,transparent);
  }
  100%{
    background:transparent;
    box-shadow:0 0 0 0 transparent;
  }
}

html[lang^="zh"] .wrap>p,
html[lang^="zh"] .wrap section>p,
html[lang^="zh"] .wrap section li,
html[lang^="zh"] .whereblock p,
html[lang^="zh"] .aside p,
html[lang^="zh"] .format-alt p,
html[lang^="zh"] .tomorrow p,
html[lang^="zh"] .sources li,
html[lang^="zh"] .recap dd,
html[lang^="zh"] blockquote{
  text-align:justify;
  text-justify:inter-ideograph;
}
html[lang^="zh"] .topbar-row,
html[lang^="zh"] .download-strip,
html[lang^="zh"] .panel,
html[lang^="zh"] .download-card p,
html[lang^="zh"] .day-card p,
html[lang^="zh"] .lesson-nav-card,
html[lang^="zh"] .toc-row,
html[lang^="zh"] .card-kicker,
html[lang^="zh"] .ptitle,
html[lang^="zh"] .pnote,
html[lang^="zh"] .routcome p,
html[lang^="zh"] .rnode{
  text-align:initial;
}

@media(max-width:720px){
  .topbar-row{align-items:flex-start;flex-direction:column;gap:.5rem;}
  .topnav{font-size:.68rem;}
  .download-strip .wide{flex-wrap:wrap;}
  .oscrow{align-items:flex-start;flex-direction:column;gap:.25rem;}
  .oscrow .lab,.oscrow .pct{flex:auto;text-align:left;}
  .bartrack{width:100%;}
  .vc-row{display:block;}
  .vc-row .who{display:block;margin-bottom:.2rem;}
  .home-actions{grid-template-columns:1fr;}
  .lesson-nav{grid-template-columns:1fr;gap:.55rem;}
  .lesson-nav-card.is-syllabus{text-align:left;}
  .day-card{grid-template-columns:1fr;gap:.2rem;}
  .day-card .card-kicker,.day-card h2,.day-card h3,.day-card p:not(.card-kicker){grid-column:1;grid-row:auto;}
}

@media(max-width:520px){
  .deep-dive .chip{max-width:100%;white-space:normal;overflow-wrap:anywhere;line-height:1.35;border-radius:8px;align-items:flex-start;}
  .deep-dive .chip i,.deep-dive .chip-dot{flex:0 0 auto;margin-top:.25em;}
}

@media(max-width:760px){
  .regress-chain{grid-template-columns:1fr;}
  .rstep{font-size:1.2rem;min-height:1.1rem;transform:rotate(90deg);}
  .regress-outcomes{grid-template-columns:1fr;}
}

@page{size:6in 9in;margin:.78in .55in .86in;background:#fff;}
@page cover{size:6in 9in;margin:0;}
@page block{size:6in 9in;margin:0;}
@page appendix{size:6in 9in;margin:.78in .55in .86in;background:#f2f2ef;}
@media print{
  :root{--paper:#fff;--raised:#fff;--ink:#111;--ink-soft:#333;--ink-faint:#666;--line:#ddd;--line-strong:#bbb;--shadow:none;}
  body{font-size:10.2pt;line-height:1.46;background:transparent;color:#111;}
  .site-topbar,.site-footer,.download-strip,.web-only,.epub-only,.print-hide,.deep-dive,.codex-refiner{display:none!important;}
  .include-deep-dive .deep-dive{display:block!important;break-before:page;page-break-before:always;page:appendix;box-sizing:border-box;border:0;margin:-.78in -.55in -.86in;padding:.78in .55in .86in;background:#f2f2ef;}
  .include-deep-dive .deep-dive>summary{display:block;cursor:auto;padding:0 0 .24in;}
  .include-deep-dive .deep-dive>summary::before{display:none;}
  .include-deep-dive .deep-dive .ptitle{display:block;font-family:"IBM Plex Mono",monospace;font-size:8.2pt;letter-spacing:.16em;text-transform:uppercase;color:#666;margin:0 0 .06in;}
  .include-deep-dive .deep-dive-title{display:block;font-size:22pt;line-height:1.05;margin:.04in 0 .08in;}
  .include-deep-dive .deep-dive-optional-note{display:block;font-style:italic;font-size:10.4pt;color:#444;margin:0 0 .1in;}
  .include-deep-dive .deep-dive-sub{display:block;font-size:11pt;color:#333;}
  .include-deep-dive .deep-dive-body{display:block;padding:0;}
  .print-only,.format-alt{display:block!important;}
  .deep-dive-edition-only.print-only{display:none!important;}
  .include-deep-dive .deep-dive-edition-only.print-only{display:block!important;}
  .print-cover,.block-divider{box-sizing:border-box;width:6in;height:9in;min-height:9in;max-height:9in;margin:0;background:var(--accent-deep);color:#fff;display:flex;align-items:center;padding:.78in .82in .86in;overflow:hidden;}
  .print-cover{page:cover;break-before:auto;break-after:page;page-break-before:auto;page-break-after:always;flex-direction:column;justify-content:center;align-items:flex-start;}
  .block-divider{page:block;break-before:page;break-after:page;page-break-before:always;page-break-after:always;}
  .print-cover .eyebrow,.block-divider p{font-family:"IBM Plex Mono",monospace;font-size:9pt;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.72);margin:0 0 .18in;}
  .print-cover h1,.block-divider h1{font-size:29pt;line-height:1.05;color:#fff;margin:0;max-width:4.3in;}
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