/* ==========================================================================
   AI CAPITAL-CYCLE FORENSICS — Design system v2
   Light theme · OKLCH · academic-forensic editorial
   Layout: fixed LHS navigation rail + aligned content column
   ========================================================================== */

:root{
  /* surfaces */
  --bg:        oklch(98.4% 0.004 255);
  --bg-2:      oklch(96.2% 0.006 255);
  --surface:   oklch(100% 0 0);
  --surface-2: oklch(97.4% 0.005 255);
  --line:      oklch(90% 0.008 255);
  --line-2:    oklch(84% 0.012 255);

  /* ink */
  --ink:       oklch(24% 0.022 262);
  --ink-2:     oklch(38% 0.018 262);
  --muted:     oklch(55% 0.014 262);
  --faint:     oklch(68% 0.010 262);

  /* semantic */
  --navy:      oklch(37% 0.075 262);
  --navy-soft: oklch(94% 0.018 262);
  --red:       oklch(54% 0.195 25);
  --red-soft:  oklch(95.5% 0.030 25);
  --green:     oklch(52% 0.135 155);
  --green-soft:oklch(95.5% 0.035 155);
  --amber:     oklch(70% 0.145 78);
  --amber-soft:oklch(96% 0.045 85);
  --violet:    oklch(50% 0.150 300);
  --violet-soft:oklch(95.5% 0.030 300);
  --teal:      oklch(56% 0.105 200);
  --teal-soft: oklch(95.5% 0.030 200);
  --slate:     oklch(48% 0.030 255);

  /* type */
  --serif: "Songti SC", "Noto Serif CJK TC", "Source Han Serif TC", "Times New Roman", Georgia, serif;
  --sans:  "PingFang TC", "Noto Sans CJK TC", "Microsoft JhengHei", -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono:  "SF Mono", "JetBrains Mono", "Cascadia Mono", Consolas, ui-monospace, monospace;

  --r:  10px;
  --r-sm: 6px;
  --shadow: 0 1px 2px oklch(24% 0.02 262 / .05), 0 6px 22px oklch(24% 0.02 262 / .06);
  --shadow-lg: 0 2px 6px oklch(24% 0.02 262 / .07), 0 18px 48px oklch(24% 0.02 262 / .10);

  /* layout */
  --sw: 274px;            /* sidebar width */
  --content-max: 1180px;  /* shared column width for topbar + content */
  --content-pad: 28px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth; scroll-padding-top:74px; overflow-x:clip}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--sans); font-size:16px; line-height:1.78;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  padding-left:var(--sw); overflow-x:clip;
}
html.modal-open{overflow:hidden}

/* ONE shared column definition — the top bar and the page content can never drift.
   (v1 bug: the masthead reused class `.bar`, whose `margin:10px 0 12px` overrode
    `.wrap{margin:0 auto}`, so the header never centred.) */
.wrap,
.topbar-inner{
  width:100%; max-width:var(--content-max);
  margin-inline:auto; padding-inline:var(--content-pad);
}

/* ==========================================================================
   LHS NAVIGATION RAIL
   ========================================================================== */
.sidenav{
  position:fixed; left:0; top:0; bottom:0; width:var(--sw); z-index:80;
  background:oklch(99% 0.003 255);
  border-right:1px solid var(--line);
  display:flex; flex-direction:column;
  transition:transform .22s ease;
}
.sidenav .sn-head{
  padding:16px 18px 14px; border-bottom:1px solid var(--line); flex:0 0 auto;
}
.sidenav .sn-logo{display:flex; align-items:center; gap:10px; text-decoration:none; border:none}
.sidenav .sn-logo .mk{
  width:30px; height:30px; border-radius:7px; display:grid; place-items:center; flex:0 0 auto;
  background:var(--navy); color:#fff; font-family:var(--mono); font-size:12px; font-weight:700; letter-spacing:-.5px;
}
.sidenav .sn-logo .tt{font-family:var(--serif); font-size:14.5px; font-weight:700; color:var(--ink); line-height:1.2}
.sidenav .sn-logo .st{display:block; font-family:var(--mono); font-size:8.5px; letter-spacing:.13em; color:var(--faint); text-transform:uppercase; margin-top:1px}
.sidenav .sn-scroll{overflow-y:auto; flex:1 1 auto; padding:12px 10px 16px; overscroll-behavior:contain}
.sidenav .sn-scroll::-webkit-scrollbar{width:8px}
.sidenav .sn-scroll::-webkit-scrollbar-thumb{background:oklch(88% 0.01 255); border-radius:4px}
.sidenav .sn-scroll::-webkit-scrollbar-track{background:transparent}

.sn-group{margin-bottom:4px}
.sn-glabel{
  width:100%; display:flex; align-items:center; gap:8px; background:none; border:none; cursor:pointer;
  padding:8px 10px; font-family:var(--mono); font-size:10px; letter-spacing:.15em; text-transform:uppercase;
  color:var(--faint); font-weight:700; border-radius:var(--r-sm); text-align:left
}
.sn-glabel:hover{background:var(--surface-2); color:var(--muted)}
.sn-glabel .cv{margin-left:auto; font-size:9px; transition:transform .18s; color:var(--faint)}
.sn-group.closed .cv{transform:rotate(-90deg)}
.sn-list{padding:2px 0 6px}
.sn-group.closed .sn-list{display:none}
.sn-link{
  display:flex; gap:9px; align-items:flex-start; text-decoration:none; border:none;
  padding:7px 10px 7px 11px; border-radius:var(--r-sm); font-size:13px; line-height:1.42;
  color:var(--ink-2); border-left:2px solid transparent
}
.sn-link .n{font-family:var(--mono); font-size:10px; color:var(--faint); flex:0 0 20px; padding-top:2.5px}
.sn-link:hover{background:var(--surface-2); color:var(--ink)}
.sn-link.on{background:var(--navy-soft); color:var(--navy); font-weight:700; border-left-color:var(--navy)}
.sn-link.on .n{color:var(--navy)}
.sn-link .star{color:var(--red); font-size:11px}
.sidenav .sn-foot{
  flex:0 0 auto; border-top:1px solid var(--line); padding:10px 16px 13px;
  font-family:var(--mono); font-size:9.5px; color:var(--faint); line-height:1.7; letter-spacing:.03em
}
.sidenav .sn-close{display:none}

.sn-backdrop{
  position:fixed; inset:0; background:oklch(24% 0.02 262 / .42); z-index:75;
  opacity:0; pointer-events:none; transition:opacity .2s
}
.sn-backdrop.on{opacity:1; pointer-events:auto}

/* ==========================================================================
   TOP BAR (aligned to the same column as content)
   ========================================================================== */
.topbar{
  position:sticky; top:0; z-index:60;
  background:oklch(100% 0 0 / .93);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar .topbar-inner{
  display:flex; align-items:center; gap:16px; min-height:56px;
}
.tb-menu{
  display:none; flex:0 0 auto; background:var(--surface-2); border:1px solid var(--line-2);
  border-radius:var(--r-sm); padding:6px 10px; font-family:var(--mono); font-size:11px;
  cursor:pointer; color:var(--ink-2)
}
.tb-title{display:flex; align-items:baseline; gap:10px; min-width:0}
.tb-title .k{
  font-family:var(--mono); font-size:10px; letter-spacing:.17em; text-transform:uppercase;
  color:var(--red); font-weight:700; flex:0 0 auto
}
.tb-title .t{
  font-family:var(--serif); font-size:14.5px; font-weight:700; color:var(--ink);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis
}
.topbar .tb-spacer{flex:1 1 auto; min-width:8px}
.topbar .tb-meta{
  font-family:var(--mono); font-size:10px; letter-spacing:.1em; color:var(--faint);
  text-transform:uppercase; text-align:right; flex:0 0 auto; white-space:nowrap
}
@media(max-width:1180px){ .topbar .tb-meta{display:none} }
@media(max-width:1080px){ .tb-menu{display:block} }

/* language switcher — present on every page in both trees */
.lang-sw{
  flex:0 0 auto; font-family:var(--mono); font-size:11px; font-weight:700; letter-spacing:.06em;
  color:var(--ink-2); border:1px solid var(--line-2); border-radius:20px;
  padding:4px 11px; background:var(--surface-2); white-space:nowrap; line-height:1.5
}
.lang-sw:hover{background:var(--navy); border-color:var(--navy); color:#fff}

/* ==========================================================================
   ENGLISH TREE  (html lang="en")
   Latin-first type stacks — the CJK-first stacks in :root would push English
   copy into a calligraphic serif at the wrong optical size.
   ========================================================================== */
html[lang="en"]{
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
html[lang="en"] body{font-size:16.5px; line-height:1.70}
html[lang="en"] h1.title{letter-spacing:-1px}
html[lang="en"] main.page h2{letter-spacing:-.5px}
html[lang="en"] .dek{font-size:18px}
html[lang="en"] .pullquote{font-size:21px}
html[lang="en"] .legend span{font-size:11.5px}
html[lang="en"] .fn{font-size:11px}
/* a Chinese term kept in the English text (romanisation followed by the glyphs) */
.zh{font-family:"PingFang TC","Noto Sans CJK TC","Microsoft JhengHei",sans-serif; color:var(--muted); font-size:.94em}

/* ==========================================================================
   PAGE HEAD
   ========================================================================== */
.pagehead{padding:24px 0 20px; border-bottom:1px solid var(--line); margin-bottom:26px}
.kicker{font-family:var(--mono); font-size:10.5px; letter-spacing:.19em; text-transform:uppercase; color:var(--red); font-weight:700}
h1.title{
  font-family:var(--serif); font-size:clamp(27px,4.1vw,44px); line-height:1.15; margin:.28em 0 .34em;
  font-weight:700; letter-spacing:-.6px
}
.dek{font-size:17.5px; color:var(--ink-2); line-height:1.72; margin:0 0 14px}
.byline{font-family:var(--mono); font-size:11px; letter-spacing:.06em; color:var(--faint)}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
main.page{padding-bottom:70px}
main.page h2{
  font-family:var(--serif); font-size:clamp(22px,2.8vw,30px); line-height:1.24; font-weight:700;
  margin:52px 0 16px; padding-top:14px; border-top:1px solid var(--line); letter-spacing:-.3px
}
main.page h2 .num{
  font-family:var(--mono); font-size:12.5px; color:var(--faint); display:block; letter-spacing:.14em; margin-bottom:6px; font-weight:600
}
main.page h3{font-family:var(--serif); font-size:20px; font-weight:700; margin:32px 0 10px; line-height:1.35; color:var(--ink)}
main.page h4{font-size:15.5px; font-weight:700; margin:22px 0 8px; color:var(--ink-2)}
/* READING MEASURE — deliberately fluid.
   v2 capped body text at 82ch, which at CJK metrics is ≈640px inside a ~750px
   content column: every paragraph stopped ~15% short of the column edge and the
   ragged right edge read as a layout bug rather than as a measure. The column
   itself is now the measure, so prose, callouts, panels and tables all end on
   the same edge. */
main.page p{margin:0 0 15px; text-wrap:pretty}
main.page ul, main.page ol{margin:0 0 16px; padding-inline-start:22px}
main.page li{margin-bottom:8px}
main.page strong{font-weight:700; color:var(--ink)}
main.page em{font-style:normal; background:linear-gradient(transparent 62%, oklch(88% 0.09 85 / .55) 0); padding:0 1px}
a{color:var(--navy); text-decoration:none; border-bottom:1px solid oklch(60% 0.08 262 / .35)}
a:hover{border-bottom-color:var(--navy)}
code{font-family:var(--mono); font-size:.88em; background:var(--surface-2); padding:1px 5px; border-radius:4px; border:1px solid var(--line)}
.lead{font-size:18px; line-height:1.75; color:var(--ink-2)}

/* ==========================================================================
   LAYOUT HELPERS / CARDS
   ========================================================================== */
.grid2{display:grid; grid-template-columns:1fr 1fr; gap:20px}
.grid3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
.grid4{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
@media(max-width:1000px){.grid3,.grid4{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.grid2,.grid3,.grid4{grid-template-columns:1fr}}
.row{display:flex; gap:14px; flex-wrap:wrap; align-items:center}

.card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  padding:20px 22px; box-shadow:var(--shadow); margin:0 0 18px
}
.card.tight{padding:16px 18px}
.card h4{margin-top:0}
.card.accent-red{border-left:4px solid var(--red)}
.card.accent-navy{border-left:4px solid var(--navy)}
.card.accent-amber{border-left:4px solid var(--amber)}
.card.accent-green{border-left:4px solid var(--green)}
.card.accent-violet{border-left:4px solid var(--violet)}
.card.accent-teal{border-left:4px solid var(--teal)}

.callout{
  background:var(--red-soft); border:1px solid oklch(88% 0.06 25); border-radius:var(--r);
  padding:18px 22px; margin:22px 0; box-shadow:var(--shadow)
}
.callout .lbl{font-family:var(--mono); font-size:10.5px; letter-spacing:.17em; text-transform:uppercase; color:var(--red); font-weight:700; display:block; margin-bottom:7px}
.callout p:last-child{margin-bottom:0}
.callout.navy{background:var(--navy-soft); border-color:oklch(88% 0.04 262)} .callout.navy .lbl{color:var(--navy)}
.callout.amber{background:var(--amber-soft); border-color:oklch(90% 0.06 85)} .callout.amber .lbl{color:oklch(52% 0.13 70)}
.callout.green{background:var(--green-soft); border-color:oklch(89% 0.05 155)} .callout.green .lbl{color:oklch(42% 0.12 155)}
.callout.violet{background:var(--violet-soft); border-color:oklch(90% 0.05 300)} .callout.violet .lbl{color:var(--violet)}

.pullquote{
  border-left:3px solid var(--navy); padding:4px 0 4px 20px; margin:26px 0;
  font-family:var(--serif); font-size:20px; line-height:1.62; color:var(--ink)
}
.pullquote cite{display:block; font-family:var(--mono); font-size:11px; font-style:normal; color:var(--faint); margin-top:8px; letter-spacing:.06em}

/* ==========================================================================
   STAT BLOCKS
   ========================================================================== */
.stat{background:var(--surface); border:1px solid var(--line); border-radius:var(--r); padding:16px 18px; box-shadow:var(--shadow)}
.stat .v{font-family:var(--mono); font-size:clamp(24px,3.1vw,34px); font-weight:700; letter-spacing:-1px; line-height:1.05; color:var(--ink)}
.stat .v.red{color:var(--red)} .stat .v.green{color:var(--green)} .stat .v.navy{color:var(--navy)} .stat .v.amber{color:oklch(52% 0.13 70)}
.stat .l{font-size:12.5px; color:var(--muted); margin-top:6px; line-height:1.5}
.stat .s{font-family:var(--mono); font-size:10px; color:var(--faint); margin-top:5px; letter-spacing:.05em}

/* ==========================================================================
   TABLES
   ========================================================================== */
.tw{overflow-x:auto; margin:20px 0; border:1px solid var(--line); border-radius:var(--r); background:var(--surface); box-shadow:var(--shadow)}
table{border-collapse:collapse; width:100%; font-size:13.5px; min-width:640px}
thead th{
  background:var(--bg-2); text-align:left; padding:11px 13px; font-size:11.5px; font-weight:700;
  letter-spacing:.05em; color:var(--ink-2); border-bottom:1px solid var(--line-2); vertical-align:bottom; white-space:nowrap
}
tbody td{padding:10px 13px; border-bottom:1px solid var(--line); vertical-align:top; line-height:1.55}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:oklch(97.5% 0.006 255)}
td.num, th.num{text-align:right; font-family:var(--mono); font-variant-numeric:tabular-nums; white-space:nowrap}
tr.total td{background:var(--bg-2); font-weight:700; border-top:2px solid var(--line-2)}
tr.sub td{background:oklch(97.8% 0.005 255); font-weight:600}
td.neg{color:var(--red)} td.pos{color:var(--green)}
tbody tr.hl{background:var(--amber-soft)}
caption{caption-side:bottom; text-align:left; padding:11px 13px; font-size:11.5px; color:var(--faint); font-family:var(--mono); line-height:1.6}

/* ==========================================================================
   BADGES
   ========================================================================== */
.badge{
  display:inline-block; font-family:var(--mono); font-size:10px; letter-spacing:.09em; text-transform:uppercase;
  padding:2.5px 7px; border-radius:4px; font-weight:700; white-space:nowrap
}
.b-red{background:var(--red-soft); color:var(--red)}
.b-amber{background:var(--amber-soft); color:oklch(48% 0.13 70)}
.b-green{background:var(--green-soft); color:oklch(40% 0.12 155)}
.b-navy{background:var(--navy-soft); color:var(--navy)}
.b-grey{background:var(--bg-2); color:var(--muted)}
.b-violet{background:var(--violet-soft); color:var(--violet)}

/* ==========================================================================
   CHARTS
   ========================================================================== */
.chart{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  padding:16px 18px 12px; margin:22px 0; box-shadow:var(--shadow)
}
.chart-head{display:flex; align-items:flex-start; gap:14px; margin-bottom:10px}
.chart-hx{min-width:0; flex:1 1 auto}
.chart .ct{font-family:var(--serif); font-size:16.5px; font-weight:700; margin:0 0 3px; line-height:1.35}
.chart .cs{font-size:12.5px; color:var(--muted); margin:0; line-height:1.55}
.zoom-btn{
  flex:0 0 auto; display:inline-flex; align-items:center; gap:5px; cursor:pointer;
  background:var(--surface-2); border:1px solid var(--line-2); color:var(--ink-2);
  border-radius:20px; padding:5px 12px; font-family:var(--mono); font-size:10.5px;
  letter-spacing:.06em; font-weight:700; white-space:nowrap; transition:background .15s,color .15s,border-color .15s
}
.zoom-btn:hover{background:var(--navy); border-color:var(--navy); color:#fff}
.zoom-btn span{font-size:13px; line-height:1}
.chart-canvas{position:relative; overflow:clip}
.chart svg{display:block; width:100%; height:auto; overflow:visible}
.chart .cf{font-family:var(--mono); font-size:10.5px; color:var(--faint); margin-top:8px; padding-top:9px; border-top:1px solid var(--line); line-height:1.65}
.chart .cf b{color:var(--muted); font-weight:700}
.legend{display:flex; flex-wrap:wrap; gap:8px 16px; margin:9px 0 4px; align-items:center}
.legend span{display:inline-flex; align-items:center; gap:6px; font-size:12px; color:var(--ink-2); line-height:1.45}
.legend i{width:11px; height:11px; border-radius:3px; display:inline-block; flex:0 0 auto}
.legend i.ln{height:3px; border-radius:2px; width:16px}
.legend span.lg-note{flex:1 1 100%; font-family:var(--mono); font-size:10.5px; color:var(--faint); letter-spacing:.02em}
.cm-body .legend{margin-bottom:0}
.chart svg [data-tip]{cursor:crosshair}

/* ---------- tooltip ---------- */
#chart-tip{
  position:fixed; left:0; top:0; z-index:200; pointer-events:none;
  background:oklch(24% 0.025 262 / .97); color:#fff; border-radius:8px;
  padding:9px 12px; font-size:12.5px; line-height:1.55; max-width:330px;
  box-shadow:0 8px 30px oklch(20% 0.02 262 / .34);
  opacity:0; visibility:hidden; transition:opacity .11s; will-change:transform
}
#chart-tip.on{opacity:1; visibility:visible}
#chart-tip b{display:block; font-weight:700; color:#fff; margin-bottom:2px; font-size:12.5px}
#chart-tip i{display:block; font-style:normal; color:oklch(82% 0.02 262); font-size:11.5px}
#chart-tip u{display:block; text-decoration:none; font-family:var(--mono); color:oklch(92% 0.05 200); font-size:12px; margin-top:3px; font-weight:700}
#chart-tip u:empty{display:none}

/* ---------- zoom modal ---------- */
.chart-modal{position:fixed; inset:0; z-index:190; opacity:0; transition:opacity .18s}
.chart-modal.on{opacity:1}
.chart-modal .cm-backdrop{
  position:absolute; inset:0; background:oklch(20% 0.02 262 / .72);
  -webkit-backdrop-filter:blur(3px); backdrop-filter:blur(3px)
}
.chart-modal .cm-panel{
  position:relative; margin:3.2vh auto; width:min(1560px,95vw); max-height:94vh;
  background:var(--surface); border-radius:14px; box-shadow:var(--shadow-lg);
  display:flex; flex-direction:column; overflow:hidden;
  transform:translateY(12px) scale(.99); transition:transform .2s
}
.chart-modal.on .cm-panel{transform:none}
.cm-head{
  display:flex; align-items:flex-start; gap:16px; padding:16px 20px 14px;
  border-bottom:1px solid var(--line); flex:0 0 auto
}
.cm-hx{min-width:0; flex:1 1 auto}
.cm-title{font-family:var(--serif); font-size:18px; font-weight:700; line-height:1.35}
.cm-sub{font-size:12.5px; color:var(--muted); margin-top:3px; line-height:1.55}
.cm-close{
  flex:0 0 auto; cursor:pointer; background:var(--surface-2); border:1px solid var(--line-2);
  border-radius:20px; padding:6px 13px; font-family:var(--mono); font-size:11px; font-weight:700;
  color:var(--ink-2); white-space:nowrap
}
.cm-close:hover{background:var(--red); border-color:var(--red); color:#fff}
.cm-close .k{font-size:9.5px; opacity:.7; border:1px solid currentColor; border-radius:3px; padding:0 3px; margin-left:4px}
.cm-body{padding:12px 20px 6px; overflow:auto; flex:1 1 auto}
.cm-body .chart-canvas{max-width:100%}
.cm-foot{
  flex:0 0 auto; border-top:1px solid var(--line); padding:11px 20px 14px;
  font-family:var(--mono); font-size:10.5px; color:var(--faint); line-height:1.7; max-height:22vh; overflow:auto
}

/* ==========================================================================
   FILTER CHIPS
   ========================================================================== */
.chips{display:flex; flex-wrap:wrap; gap:7px; margin:0 0 14px}
.chips button{
  background:var(--bg-2); border:1px solid var(--line-2); border-radius:20px;
  padding:6px 14px; font-size:12.5px; cursor:pointer; color:var(--ink-2);
  font-family:var(--sans); font-weight:600; transition:background .14s,color .14s,border-color .14s
}
.chips button:hover{border-color:var(--navy); color:var(--navy)}
.chips button.on{background:var(--navy); border-color:var(--navy); color:#fff}

/* ==========================================================================
   TABS / ACCORDION / TOC
   ========================================================================== */
.tabs{border:1px solid var(--line); border-radius:var(--r); background:var(--surface); overflow:hidden; margin:22px 0; box-shadow:var(--shadow)}
.tabs .tabbar{display:flex; overflow-x:auto; background:var(--bg-2); border-bottom:1px solid var(--line); scrollbar-width:none}
.tabs .tabbar::-webkit-scrollbar{display:none}
/* Tab labels share the whole bar — a three-tab bar used to leave a dead grey
   strip on the right. */
.tabs .tabbar button{
  flex:1 1 0; min-width:0; background:none; border:none; border-bottom:2px solid transparent;
  padding:12px 17px; font-size:13px; font-weight:600; color:var(--muted); cursor:pointer;
  font-family:var(--sans); text-align:center; line-height:1.45
}
.tabs .tabbar button:hover{color:var(--ink)}
.tabs .tabbar button.on{color:var(--navy); border-bottom-color:var(--navy); background:var(--surface); font-weight:700}
.tabs .panel{display:none; padding:22px}
.tabs .panel.on{display:block}

details.acc{border:1px solid var(--line); border-radius:var(--r); background:var(--surface); margin:0 0 10px; box-shadow:var(--shadow)}
details.acc summary{cursor:pointer; padding:15px 20px; font-weight:700; font-size:15px; list-style:none; display:flex; gap:11px; align-items:flex-start; border-radius:var(--r)}
details.acc summary::-webkit-details-marker{display:none}
details.acc summary::before{content:"+"; font-family:var(--mono); color:var(--navy); font-weight:700; flex:0 0 auto; line-height:1.5}
details.acc[open] summary::before{content:"–"}
details.acc[open] summary{border-bottom:1px solid var(--line)}
details.acc .body{padding:16px 20px 20px}
details.acc .body p:last-child, details.acc .body ul:last-child{margin-bottom:0}

.toc{background:var(--surface-2); border:1px solid var(--line); border-radius:var(--r); padding:16px 20px; margin:0 0 26px}
.toc .lbl{font-family:var(--mono); font-size:10.5px; letter-spacing:.17em; text-transform:uppercase; color:var(--faint); font-weight:700; margin-bottom:9px}
.toc ol{margin:0; padding-inline-start:20px; columns:2; column-gap:28px}
.toc li{margin-bottom:5px; font-size:13.5px}
@media(max-width:700px){.toc ol{columns:1}}

/* ==========================================================================
   NOTES / FOOTNOTES
   ========================================================================== */
.note{font-size:12.5px; color:var(--muted); line-height:1.62; margin:10px 0 0}
/* References / footnotes: full column width, two columns of text on wide screens */
.fn{
  font-family:var(--mono); font-size:11.5px; color:var(--faint);
  border-top:1px solid var(--line); margin-top:34px; padding-top:16px; line-height:1.78;
  max-width:none
}
.fn ol{
  margin:0; padding-inline-start:22px; max-width:none;
  columns:2; column-gap:44px; column-rule:1px solid var(--line)
}
.fn li{margin:0 0 8px; break-inside:avoid; max-width:none}
.fn li::marker{color:var(--line-2)}
.fn b{color:var(--muted)}
@media(max-width:900px){ .fn ol{columns:1; column-rule:none} }
sup.ref{font-family:var(--mono); font-size:10px; color:var(--navy); font-weight:700; vertical-align:super}
.src{font-family:var(--mono); font-size:9.5px; padding:1px 4px; border-radius:3px; background:var(--green-soft); color:oklch(42% 0.12 155); font-weight:700; letter-spacing:.04em}
.src.est{background:var(--amber-soft); color:oklch(48% 0.13 70)}

/* ==========================================================================
   VERDICT / SCENARIO
   ========================================================================== */
.verdict{border:1px solid var(--line-2); border-radius:var(--r); padding:18px 20px; background:var(--surface); box-shadow:var(--shadow)}
.verdict .h{display:flex; justify-content:space-between; align-items:baseline; gap:12px; margin-bottom:9px}
.verdict .h .t{font-family:var(--serif); font-size:18px; font-weight:700}
.verdict .h .p{font-family:var(--mono); font-size:15px; font-weight:700; color:var(--navy)}
.bar{height:7px; background:var(--bg-2); border-radius:4px; overflow:hidden; margin:10px 0 12px}
.bar i{display:block; height:100%; border-radius:4px}

/* ==========================================================================
   THESIS CARDS  (六個核心命題)
   ========================================================================== */
.thesis{counter-reset:th; margin:26px 0 8px; display:grid; gap:14px}
.thesis-item{
  position:relative; display:grid; grid-template-columns:78px 1fr; gap:0;
  background:var(--surface); border:1px solid var(--line); border-left:4px solid var(--navy);
  border-radius:var(--r); box-shadow:var(--shadow); overflow:hidden;
  transition:transform .16s ease, box-shadow .16s ease, border-color .16s
}
.thesis-item:hover{transform:translateX(3px); box-shadow:var(--shadow-lg)}
.thesis-item .th-n{
  display:flex; flex-direction:column; align-items:center; justify-content:flex-start; gap:6px;
  padding:20px 0 18px; background:linear-gradient(180deg, var(--navy-soft), oklch(98% 0.008 262));
  border-right:1px solid var(--line)
}
.thesis-item .th-n .big{font-family:var(--mono); font-size:30px; font-weight:700; color:var(--navy); line-height:1; letter-spacing:-1.5px}
.thesis-item .th-n .cn{font-family:var(--mono); font-size:9px; letter-spacing:.14em; color:var(--faint); font-weight:700}
.thesis-item .th-b{padding:17px 22px 18px}
.thesis-item .th-t{font-family:var(--serif); font-size:18.5px; font-weight:700; line-height:1.38; margin:0 0 9px}
.thesis-item .th-t a{border:none; color:inherit}
.thesis-item .th-t a:hover{color:var(--navy); text-decoration:underline}
.thesis-item .th-x{font-size:14.5px; line-height:1.72; color:var(--ink-2); margin:0 0 12px; text-wrap:pretty}
.thesis-item .th-k{
  display:inline-flex; align-items:baseline; gap:7px; flex-wrap:wrap;
  background:var(--red-soft); border:1px solid oklch(90% 0.045 25); border-radius:7px;
  padding:8px 13px; margin:0 0 12px
}
.thesis-item .th-k .kv{font-family:var(--mono); font-size:17px; font-weight:700; color:var(--red); letter-spacing:-.4px; line-height:1.1}
.thesis-item .th-k .kl{font-size:12.5px; color:var(--ink-2); line-height:1.5}
.thesis-item .th-go{font-family:var(--mono); font-size:11px; font-weight:700; letter-spacing:.06em; color:var(--navy); border:none}
.thesis-item .th-go:hover{text-decoration:underline}
.thesis-item.c2{border-left-color:var(--teal)}   .thesis-item.c2 .th-n{background:linear-gradient(180deg, var(--teal-soft), oklch(98% 0.008 200))}
.thesis-item.c2 .th-n .big{color:var(--teal)} .thesis-item.c2 .th-k{background:var(--teal-soft); border-color:oklch(90% 0.04 200)} .thesis-item.c2 .th-k .kv{color:var(--teal)}
.thesis-item.c3{border-left-color:var(--amber)}  .thesis-item.c3 .th-n{background:linear-gradient(180deg, var(--amber-soft), oklch(98.5% 0.012 85))}
.thesis-item.c3 .th-n .big{color:oklch(52% 0.13 70)} .thesis-item.c3 .th-k{background:var(--amber-soft); border-color:oklch(90% 0.06 85)} .thesis-item.c3 .th-k .kv{color:oklch(48% 0.13 70)}
.thesis-item.c4{border-left-color:var(--violet)} .thesis-item.c4 .th-n{background:linear-gradient(180deg, var(--violet-soft), oklch(98% 0.01 300))}
.thesis-item.c4 .th-n .big{color:var(--violet)} .thesis-item.c4 .th-k{background:var(--violet-soft); border-color:oklch(90% 0.05 300)} .thesis-item.c4 .th-k .kv{color:var(--violet)}
.thesis-item.c5{border-left-color:var(--red)}    .thesis-item.c5 .th-n{background:linear-gradient(180deg, var(--red-soft), oklch(98% 0.012 25))}
.thesis-item.c5 .th-n .big{color:var(--red)}
.thesis-item.c6{border-left-color:var(--green)}  .thesis-item.c6 .th-n{background:linear-gradient(180deg, var(--green-soft), oklch(98% 0.012 155))}
.thesis-item.c6 .th-n .big{color:var(--green)} .thesis-item.c6 .th-k{background:var(--green-soft); border-color:oklch(90% 0.05 155)} .thesis-item.c6 .th-k .kv{color:oklch(42% 0.12 155)}
@media(max-width:620px){
  .thesis-item{grid-template-columns:1fr}
  .thesis-item .th-n{flex-direction:row; padding:12px 18px; border-right:none; border-bottom:1px solid var(--line); justify-content:flex-start; gap:10px}
  .thesis-item .th-n .big{font-size:22px}
}

/* ==========================================================================
   SITE INDEX PANEL  (全站導覽)
   ========================================================================== */
.siteindex{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  box-shadow:var(--shadow); overflow:hidden; margin:22px 0
}
.siteindex .si-head{
  display:flex; align-items:center; gap:12px; padding:14px 20px;
  background:var(--bg-2); border-bottom:1px solid var(--line)
}
.siteindex .si-head .t{font-family:var(--serif); font-size:16px; font-weight:700}
.siteindex .si-head .hint{font-family:var(--mono); font-size:10px; letter-spacing:.08em; color:var(--faint); margin-left:auto; text-align:right}
.siteindex .si-body{padding:6px 8px 12px}
.si-group{padding:10px 12px 4px; border-bottom:1px dashed var(--line)}
.si-group:last-child{border-bottom:none}
.si-gt{
  font-family:var(--mono); font-size:10px; letter-spacing:.16em; text-transform:uppercase;
  color:var(--faint); font-weight:700; margin-bottom:7px; display:flex; align-items:center; gap:8px
}
.si-gt::after{content:""; flex:1 1 auto; height:1px; background:var(--line)}
.si-items{display:grid; grid-template-columns:repeat(auto-fill,minmax(268px,1fr)); gap:2px 18px}
.si-item{
  display:flex; gap:10px; align-items:baseline; text-decoration:none; border:none;
  padding:6px 8px; border-radius:var(--r-sm); color:var(--ink-2); font-size:13.5px; line-height:1.5
}
.si-item:hover{background:var(--surface-2); color:var(--ink)}
.si-item .n{font-family:var(--mono); font-size:10px; color:var(--faint); flex:0 0 20px}
.si-item.on{background:var(--navy-soft); color:var(--navy); font-weight:700}
.si-item .badge{margin-left:auto}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer.site{border-top:1px solid var(--line); background:var(--bg-2); padding:34px 0 44px; margin-top:44px}
footer.site .k{font-family:var(--mono); font-size:10.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--faint); font-weight:700; margin-bottom:9px}
footer.site .disc{font-size:12px; color:var(--muted); line-height:1.7}
footer.site nav.fnav{display:flex; flex-wrap:wrap; gap:6px 16px; margin-bottom:22px}
footer.site nav.fnav a{font-size:12.5px; color:var(--ink-2); border:none}
footer.site nav.fnav a:hover{color:var(--navy); text-decoration:underline}

/* ==========================================================================
   MISC
   ========================================================================== */
.hr{height:1px; background:var(--line); margin:34px 0}
.stamp{display:inline-block; border:2px solid var(--red); color:var(--red); border-radius:6px; padding:5px 11px; font-family:var(--mono); font-size:11px; font-weight:700; letter-spacing:.13em; transform:rotate(-1.6deg); text-transform:uppercase}
.small{font-size:12.5px; color:var(--muted)}
.mono{font-family:var(--mono); font-size:12.5px}
.center{text-align:center}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.printonly{display:none}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media(max-width:1080px){
  body{padding-left:0}
  .sidenav{transform:translateX(-100%); box-shadow:var(--shadow-lg)}
  .sidenav.open{transform:none}
  .sidenav .sn-close{
    display:block; position:absolute; top:14px; right:12px; background:var(--surface-2);
    border:1px solid var(--line-2); border-radius:50%; width:30px; height:30px; cursor:pointer;
    font-family:var(--mono); font-size:13px; color:var(--ink-2); line-height:1
  }
}
@media(max-width:560px){
  :root{--content-pad:18px}
  main.page h2{margin-top:38px}
  .cm-head{padding:12px 14px 10px}
  .cm-body{padding:8px 12px 4px}
  .cm-foot{padding:9px 14px 12px}
  .chart{padding:14px 13px 10px}
  .zoom-btn span{display:none}
}

@media print{
  .sidenav,.topbar,.sn-backdrop,.zoom-btn,footer.site nav.fnav{display:none !important}
  body{padding-left:0; background:#fff}
  .printonly{display:block}
  .chart,.tw,.card,table{break-inside:avoid}
}