:root{
  --canvas:#eceae3;
  --paper:#f9f8f3;
  --ink:#15201d;
  --muted:#5f6964;
  --line:#d5d2c7;
  --teal:#0e3c38;
  --teal-2:#1d5952;
  --teal-3:#dce8e4;
  --brass:#a27c3f;
  --red:#7d4038;
  --amber:#9a6a24;
  --blue:#2f5f6b;
  --serif:"Iowan Old Style","Songti TC","Noto Serif TC",Georgia,serif;
  --sans:"PingFang TC","Noto Sans TC","Helvetica Neue",Arial,sans-serif;
  --shell:min(1180px,calc(100% - 40px));
  --reading:min(70ch,100%);
  --shadow:0 18px 50px rgba(21,32,29,.08);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:9rem}
body{margin:0;background:var(--canvas);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.72;overflow-wrap:anywhere}
[hidden]{display:none!important}
a{color:inherit}
button,a{font:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
.preview-banner{background:#d8c59d;color:#28251e;text-align:center;padding:8px 18px;font-size:.76rem;letter-spacing:.06em;font-weight:700}
.site-header{position:sticky;top:0;z-index:50;background:rgba(249,248,243,.96);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.site-header__inner{width:var(--shell);margin:auto;min-height:76px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px}
.site-header nav{display:flex;gap:20px;align-items:center;font-size:.82rem;font-weight:700}
.site-header nav:last-child{justify-content:flex-end}
.site-header a{text-decoration:none}
.site-header [aria-disabled="true"]{color:var(--muted)}
.brand{text-align:center;font-family:var(--serif);font-size:1.35rem;line-height:1;letter-spacing:.06em;font-weight:700}
.brand small{display:block;margin-top:7px;font-family:var(--sans);font-size:.58rem;letter-spacing:.28em;color:var(--muted)}
.active{color:var(--teal);border-bottom:1px solid var(--brass)}
.shell{width:var(--shell);margin-inline:auto}
.eyebrow{color:var(--teal);font-size:.7rem;letter-spacing:.14em;font-weight:800;text-transform:uppercase}
.display{font-family:var(--serif);font-weight:600;letter-spacing:-.025em;line-height:1.12}
.muted{color:var(--muted)}
.pill{display:inline-flex;align-items:center;gap:7px;padding:6px 10px;border:1px solid var(--line);border-radius:999px;font-size:.72rem;font-weight:700;background:rgba(255,255,255,.48)}
.pill::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--teal)}
.pill.fatal::before{background:var(--red)}
.card{background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow)}
.footer{background:#13201d;color:#dce4e0;padding:44px 0;margin-top:80px}
.footer__inner{width:var(--shell);margin:auto;display:flex;justify-content:space-between;gap:40px;font-size:.78rem}
.preview-note{border-left:3px solid var(--brass);padding-left:16px;color:var(--muted);font-size:.82rem}
.btn{display:inline-flex;align-items:center;gap:12px;padding:13px 18px;background:var(--teal);color:white;text-decoration:none;font-weight:700;border:0}
.btn::after{content:"→";font-size:1.1rem}

/* Case Library remains the approved tracer surface. */
.library-hero{padding:86px 0 54px}
.library-hero__grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:72px;align-items:end}
.library-hero h1{font-size:clamp(2.8rem,6vw,5.5rem);max-width:8ch;margin:14px 0 26px}
.library-hero .lede{max-width:42rem;margin:0;color:#39433f;font-size:1.08rem}
.library-statements{border-left:1px solid var(--line);padding-left:34px}
.library-statements div{padding:18px 0;border-top:1px solid var(--line)}
.library-statements strong{display:block;font-family:var(--serif);font-size:1.35rem}
.library-statements span{color:var(--muted);font-size:.8rem}
.archive-head{display:flex;justify-content:space-between;align-items:end;gap:30px;padding:34px 0 22px;border-top:1px solid var(--line)}
.archive-head h2{font-family:var(--serif);font-size:2rem;margin:0}
.case-card{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);min-height:480px;overflow:hidden}
.case-card__copy{padding:52px}
.case-card h3{font-size:clamp(2rem,4vw,3.5rem);margin:16px 0 22px;max-width:12ch}
.case-card .deck{max-width:42rem;color:#3d4743;font-size:1.05rem}
.case-meta{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0 34px}
.case-trust{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:42px;border-top:1px solid var(--line)}
.case-trust div{padding:18px 18px 0 0}
.case-trust strong{display:block;font-size:.84rem}
.case-trust span{color:var(--muted);font-size:.72rem}
.case-visual{background:var(--teal);color:white;display:flex;flex-direction:column;justify-content:space-between;padding:44px}
.case-visual h4{font-family:var(--serif);font-size:1.45rem;margin:8px 0}
.case-visual p{color:#c5d5d0;font-size:.8rem;max-width:28rem}
.diagram{margin:24px 0;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.16);padding:26px}
.diagram svg{width:100%;height:auto;display:block}
.case-visual__foot{font-size:.68rem;letter-spacing:.06em;color:#a9c1ba;border-top:1px solid rgba(255,255,255,.2);padding-top:16px}
.trust-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:50px 0}
.trust-row article{border-top:2px solid var(--teal);padding-top:18px}
.trust-row h3{font-family:var(--serif);font-size:1.15rem;margin:0 0 8px}
.trust-row p{color:var(--muted);font-size:.86rem;margin:0}

/* Editorial long-form Case Page. */
.article-header{background:var(--paper);border-bottom:1px solid var(--line)}
.article-header__inner{max-width:1040px;padding:68px 0 52px}
.breadcrumb{font-size:.76rem;color:var(--muted);margin:0 0 34px}
.breadcrumb a{text-underline-offset:.2em}
.article-header h1{font-size:clamp(3rem,6.4vw,6rem);max-width:13ch;margin:14px 0 28px}
.article-deck{max-width:48rem;margin:0;font:1.24rem/1.72 var(--serif);color:#34403b}
.article-meta{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;margin:38px 0 44px;padding:18px 0;border-block:1px solid var(--line)}
.article-meta div{padding:0 18px;border-right:1px solid var(--line)}
.article-meta div:first-child{padding-left:0}
.article-meta div:last-child{border-right:0;padding-right:0}
.article-meta dt{font-size:.65rem;font-weight:800;color:var(--muted);letter-spacing:.08em}
.article-meta dd{margin:4px 0 0;font:1rem/1.4 var(--serif)}
.framed-unit{--frame-count:1}
.case-brief{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;background:var(--teal);color:white;border-left:5px solid var(--brass)}
.case-brief__label{grid-column:1/-1;margin:0;padding:20px 28px 14px;color:#bcd0ca;font-size:.65rem;font-weight:800;letter-spacing:.14em;border-bottom:1px solid rgba(255,255,255,.18)}
.case-brief>div{padding:24px 28px;border-right:1px solid rgba(255,255,255,.18)}
.case-brief>div:last-child{border-right:0}
.case-brief h2{margin:0 0 8px;color:#bfd3cd;font-size:.69rem;letter-spacing:.08em}
.case-brief p{margin:0;font:1rem/1.58 var(--serif)}
.article-outline{position:sticky;top:76px;z-index:40;background:rgba(249,248,243,.97);border-bottom:1px solid var(--line)}
.article-outline .shell{display:flex;justify-content:center;gap:28px;overflow:auto;padding:10px 0}
.article-outline a{white-space:nowrap;color:var(--muted);font-size:.72rem;font-weight:750;text-decoration:none}
.case-article{padding-top:26px}
.article-prose{width:var(--reading);margin-inline:auto}
.article-section{padding:70px 0;border-bottom:1px solid var(--line)}
.article-section__header{margin-bottom:30px}
.article-section__header h2{margin:0;font:clamp(1.75rem,3vw,2.55rem)/1.28 var(--serif)}
.section-kicker{display:block;margin:0 0 11px;color:var(--brass);font-size:.67rem;letter-spacing:.14em;font-weight:800}
.article-prose>section>p,.article-prose .article-section>p{margin:0 0 1.35em;font-size:1.02rem;line-height:1.93}
.article-prose p:last-child{margin-bottom:0}
.editorial-caution{padding-left:20px;border-left:2px solid var(--brass);color:var(--muted);font-size:.9rem!important}
.sequence-line{list-style:none;margin:8px 0 22px;padding:0;border-top:2px solid var(--teal)}
.sequence-line li{display:grid;grid-template-columns:46px minmax(0,1fr);gap:18px;padding:19px 0;border-bottom:1px solid var(--line)}
.sequence-line p{margin:0;line-height:1.76}
.sequence-number{color:var(--brass);font-size:.7rem;font-weight:850;letter-spacing:.08em;padding-top:.3em}
.command{background:var(--teal);color:white;border-left:5px solid var(--brass);padding:40px 42px}
.command blockquote{margin:0 0 26px;font:clamp(1.65rem,3.5vw,2.65rem)/1.43 var(--serif)}
.command__checks{list-style:none;margin:0;padding:0;border-top:1px solid rgba(255,255,255,.22)}
.command__checks li{display:grid;grid-template-columns:minmax(180px,.65fr) minmax(0,1fr);gap:26px;padding:17px 0;border-bottom:1px solid rgba(255,255,255,.18)}
.command__checks strong{font-size:.82rem}
.command__checks span{color:#d2dfdb;font-size:.82rem;line-height:1.58}
.barrier-field{margin-top:30px;background:var(--paper);border:1px solid var(--line);padding:0 38px}
.barrier{padding:34px 0;border-bottom:1px solid var(--line)}
.barrier:last-child{border-bottom:0}
.barrier-no{margin:0 0 8px;color:var(--brass);font-size:.67rem;font-weight:850;letter-spacing:.13em}
.barrier h3{margin:0 0 12px;font:1.38rem/1.4 var(--serif)}
.barrier p{margin:0 0 11px;line-height:1.78}
.barrier-purpose{color:var(--muted);font-size:.88rem}
.action-field{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:58px}
.action-group h3{margin:0;padding-bottom:12px;border-bottom:2px solid var(--teal);font-size:.8rem;letter-spacing:.08em}
.action-group ol{list-style:none;margin:0;padding:0}
.action-group li{padding:24px 0;border-bottom:1px solid var(--line)}
.action-group h4{margin:0 0 10px;font:1.14rem/1.45 var(--serif)}
.action-group p{margin:0;line-height:1.78}
.evidence-boundary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:28px;background:var(--paper);border:1px solid var(--line)}
.evidence-boundary section{padding:28px;border-right:1px solid var(--line)}
.evidence-boundary section:last-child{border-right:0}
.evidence-boundary h3{margin:0 0 14px;font:1.2rem/1.4 var(--serif)}
.evidence-boundary ul{margin:0;padding-left:1.1em}
.evidence-boundary li{margin:0 0 10px;font-size:.84rem;line-height:1.65}
.depth{border-top:2px solid var(--teal);border-bottom:1px solid var(--line)}
.depth summary{cursor:pointer;padding:24px 0;font:1.18rem/1.45 var(--serif)}
.depth-body{padding:4px 0 36px}
.dimension-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px;margin:18px 0 44px}
.dimension-grid section{padding-top:15px;border-top:1px solid var(--line)}
.dimension-grid h4{margin:0 0 10px;color:var(--teal);font:1.15rem/1.3 var(--serif)}
.dimension-grid p{margin:0 0 10px;font-size:.78rem;line-height:1.62}
.whys{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.whys li{padding:22px 0;border-bottom:1px solid var(--line)}
.whys h4{margin:0 0 8px;font:1.05rem/1.5 var(--serif)}
.whys p{margin:0;line-height:1.72}
.endnotes-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.endnotes-list li{display:grid;grid-template-columns:2.2rem minmax(0,1fr);padding:17px 0;border-bottom:1px solid var(--line);font-size:.82rem;line-height:1.68}
.endnote-number{text-align:right;padding-right:.65rem;font-variant-numeric:tabular-nums}
.endnote-copy{padding-left:0;text-indent:0}
.endnote-copy a{text-underline-offset:.18em}
.endnote-backref{margin-left:.4em;text-decoration:none}
.source-limit{margin-top:28px!important;color:var(--muted);font-size:.82rem!important}

/* Quiet notes: invisible to layout until the reader asks. */
.note-wrap{position:relative;display:inline}
.note-ref{font-size:.66em;line-height:0;vertical-align:super;margin-left:.1em}
.note-ref a{display:inline;padding:.05em .12em;border:0!important;border-radius:0!important;background:transparent!important;color:var(--brass);font-weight:800;text-decoration:none}
.note-ref a:hover{text-decoration:underline;text-underline-offset:.18em}
.note-preview{position:absolute;z-index:80;left:0;bottom:1.45em;width:min(290px,75vw);padding:14px 16px;background:var(--paper);color:var(--ink);border:1px solid var(--line);box-shadow:0 14px 34px rgba(21,32,29,.16);font-size:.78rem;line-height:1.5;opacity:0;visibility:hidden;transform:translateY(5px);pointer-events:none;transition:opacity .14s ease,transform .14s ease,visibility .14s}
.note-preview strong,.note-preview span,.note-preview small{display:block}
.note-preview strong{margin-bottom:5px;color:var(--teal)}
.note-preview small{margin-top:7px;color:var(--muted)}
.note-wrap:hover .note-preview,.note-wrap:focus-within .note-preview{opacity:1;visibility:visible;transform:translateY(0)}
.note-sheet-backdrop{position:fixed;z-index:89;inset:0;background:rgba(13,24,21,.42)}
.note-sheet{position:fixed;z-index:90;left:0;right:0;bottom:0;padding:10px 22px max(24px,env(safe-area-inset-bottom));background:var(--paper);border-top:1px solid var(--line);box-shadow:0 -20px 60px rgba(13,24,21,.22)}
.note-sheet__handle{width:42px;height:4px;margin:0 auto 15px;border-radius:999px;background:var(--line)}
.note-sheet__head{display:flex;align-items:center;justify-content:space-between;gap:20px}
.note-sheet__head p{margin:0}
.note-sheet__head button{border:0;background:transparent;color:var(--teal);font-weight:750;padding:8px}
.note-sheet__copy{margin:18px 0;line-height:1.65}
.note-sheet__source,.note-sheet__endnote{display:inline-block;margin-right:20px;color:var(--teal);font-size:.84rem;text-underline-offset:.18em}

@media(max-width:860px){
  :root{--shell:calc(100% - 28px);--reading:100%}
  body{font-size:16px}
  .site-header__inner{min-height:66px;grid-template-columns:1fr auto}
  .site-header nav:first-child{display:none}
  .brand{text-align:left}
  .site-header nav:last-child{justify-content:flex-end}
  .library-hero__grid,.case-card{grid-template-columns:1fr}
  .library-statements{border-left:0;padding-left:0}
  .case-card__copy{padding:34px 28px}
  .case-visual{min-height:390px;padding:30px 24px}
  .case-trust,.trust-row{grid-template-columns:1fr}
  .article-header__inner{padding:48px 0 36px}
  .article-header h1{max-width:14ch;font-size:clamp(2.45rem,11vw,4rem)}
  .article-deck{font-size:1.08rem}
  .article-meta{grid-template-columns:1fr 1fr;margin:30px 0 34px}
  .article-meta div{padding:12px 14px;border-right:0;border-bottom:1px solid var(--line)}
  .article-meta div:nth-child(odd){padding-left:0;border-right:1px solid var(--line)}
  .article-meta div:nth-child(even){padding-right:0}
  .article-meta div:last-child{border-bottom:0}
  .case-brief{grid-template-columns:1fr}
  .case-brief>div{padding:20px 24px;border-right:0;border-bottom:1px solid rgba(255,255,255,.18)}
  .case-brief>div:last-child{border-bottom:0}
  .article-outline{top:66px}
  .article-outline .shell{justify-content:flex-start}
  .article-section{padding:56px 0}
  .command{padding:32px 26px}
  .command__checks li{grid-template-columns:1fr;gap:6px}
  .barrier-field{padding:0 24px}
  .action-field,.evidence-boundary,.dimension-grid{grid-template-columns:1fr}
  .action-field{gap:42px}
  .evidence-boundary section{border-right:0;border-bottom:1px solid var(--line)}
  .evidence-boundary section:last-child{border-bottom:0}
  .dimension-grid{gap:0}
  .note-preview{display:none}
  .footer__inner{display:block}
  .footer__inner p+p{margin-top:20px}
}

@media(max-width:400px){
  .article-header h1{font-size:2.45rem}
  .article-meta{grid-template-columns:1fr}
  .article-meta div,.article-meta div:nth-child(odd){padding:11px 0;border-right:0}
  .article-section{padding:49px 0}
  .sequence-line li{grid-template-columns:36px minmax(0,1fr);gap:12px}
  .command{padding:28px 21px}
  .barrier-field{padding:0 20px}
  .evidence-boundary section{padding:22px}
  .note-sheet{padding-inline:18px}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}

@media print{
  .preview-banner,.site-header,.site-footer,.article-outline,.note-preview,.note-sheet,.note-sheet-backdrop,script{display:none!important}
  body{background:white;font-size:11pt}
  .article-header{background:white}
  .article-header__inner{padding-top:0}
  .case-brief,.command,.barrier-field,.evidence-boundary{background:white!important;color:#111!important;box-shadow:none;break-inside:avoid}
  .case-brief{border:1px solid #777}
  .case-brief>div{border-color:#aaa}
  .case-brief h2,.case-brief__label,.command__checks span{color:#333}
  .article-prose{width:100%}
  .article-section{padding:28px 0}
  .depth-body{display:block!important}
  .note-ref a{color:#111}
  .endnotes-list a{color:#111}
}