/* ===== TDMusic "Designing Calm" design system — shared across the briefing site ===== */
:root{
  color-scheme:light dark;
  --bg:#e9efee; --bg-2:#eef3f2; --surface:#ffffff; --surface-2:#f0f5f4;
  --ink:#0b1518; --ink-soft:#46595c; --ink-faint:#687b7d;
  --line:rgba(11,21,24,0.11); --line-strong:rgba(11,21,24,0.22);
  --stress:#d94a34; --stress-2:#e07a4a; --calm:#0e938a; --calm-2:#37b7ad;
  --stress-wash:rgba(217,74,52,0.10); --calm-wash:rgba(14,147,138,0.10);
  --shadow:0 1px 2px rgba(11,21,24,.06), 0 12px 34px -18px rgba(11,21,24,.28);
  --mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Code",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,Roboto,sans-serif;
  --maxw:1120px;
}
@media (prefers-color-scheme: dark){ :root{
  --bg:#070b0e; --bg-2:#0a0f13; --surface:#0e161b; --surface-2:#142026;
  --ink:#e9f1f0; --ink-soft:#a2b4b5; --ink-faint:#71898c;
  --line:rgba(255,255,255,0.085); --line-strong:rgba(255,255,255,0.18);
  --stress:#ff6d5a; --stress-2:#ff9264; --calm:#3ad3c9; --calm-2:#63e3d3;
  --stress-wash:rgba(255,109,90,0.13); --calm-wash:rgba(58,211,201,0.12);
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 22px 50px -22px rgba(0,0,0,.7);
}}
:root[data-theme="dark"]{
  --bg:#070b0e; --bg-2:#0a0f13; --surface:#0e161b; --surface-2:#142026;
  --ink:#e9f1f0; --ink-soft:#a2b4b5; --ink-faint:#71898c;
  --line:rgba(255,255,255,0.085); --line-strong:rgba(255,255,255,0.18);
  --stress:#ff6d5a; --stress-2:#ff9264; --calm:#3ad3c9; --calm-2:#63e3d3;
  --stress-wash:rgba(255,109,90,0.13); --calm-wash:rgba(58,211,201,0.12);
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 22px 50px -22px rgba(0,0,0,.7);
}
:root[data-theme="light"]{
  --bg:#e9efee; --bg-2:#eef3f2; --surface:#ffffff; --surface-2:#f0f5f4;
  --ink:#0b1518; --ink-soft:#46595c; --ink-faint:#687b7d;
  --line:rgba(11,21,24,0.11); --line-strong:rgba(11,21,24,0.22);
  --stress:#d94a34; --stress-2:#e07a4a; --calm:#0e938a; --calm-2:#37b7ad;
  --stress-wash:rgba(217,74,52,0.10); --calm-wash:rgba(14,147,138,0.10);
  --shadow:0 1px 2px rgba(11,21,24,.06), 0 12px 34px -18px rgba(11,21,24,.28);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
[id]{scroll-margin-top:76px;}
@media (max-width:900px){ [id]{scroll-margin-top:104px;} }
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:var(--calm);color:#fff;font-family:var(--mono);font-size:12px;padding:8px 12px;border-radius:8px;}
.skip:focus{left:12px;}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} }
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16.5px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.narrow{max-width:860px;}
.field{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.6;
  background:radial-gradient(58% 40% at 84% 6%,var(--stress-wash),transparent 70%),
  radial-gradient(55% 45% at 10% 98%,var(--calm-wash),transparent 70%);}
main{position:relative;z-index:1;}

.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-faint);font-weight:500;}
h1,h2,h3,h4{font-family:var(--mono);font-weight:600;letter-spacing:-0.01em;text-wrap:balance;margin:0;}
h1{font-size:clamp(2.1rem,5vw,3.4rem);line-height:1.02;letter-spacing:-0.03em;}
h2{font-size:clamp(1.4rem,3vw,1.9rem);line-height:1.1;}
h3{font-size:1.02rem;letter-spacing:0;}
h4{font-size:.92rem;}
p{margin:0 0 1em;max-width:70ch;}
.lede{font-size:clamp(1.02rem,1.8vw,1.2rem);color:var(--ink-soft);line-height:1.5;}
.num{font-variant-numeric:tabular-nums;}
a{color:var(--calm);text-underline-offset:3px;}
strong{color:var(--ink);}
em{color:var(--ink);font-style:italic;}

#prog{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--stress),var(--calm));z-index:60;transition:width .1s linear;}

/* top bar */
header.bar{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px) saturate(1.3);
  background:color-mix(in srgb,var(--bg) 80%,transparent);border-bottom:1px solid var(--line);}
.bar .wrap{display:flex;align-items:center;justify-content:space-between;height:56px;gap:16px;}
.brand{font-family:var(--mono);font-size:12.5px;letter-spacing:.03em;display:flex;gap:10px;align-items:center;white-space:nowrap;text-decoration:none;color:var(--ink);}
.brand b{font-weight:600;}
.dot{width:8px;height:8px;border-radius:50%;background:var(--calm);animation:beat 2.4s ease-out infinite;flex:none;}
@keyframes beat{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--calm) 60%,transparent);}60%{box-shadow:0 0 0 9px transparent;}100%{box-shadow:0 0 0 0 transparent;}}
nav.sect{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none;}
nav.sect::-webkit-scrollbar{display:none;}
nav.sect a{font-family:var(--mono);font-size:11.5px;color:var(--ink-soft);text-decoration:none;padding:6px 9px;border-radius:7px;letter-spacing:.02em;white-space:nowrap;}
nav.sect a:hover,nav.sect a.here{color:var(--ink);background:var(--surface-2);}
@media (max-width:900px){
  .bar .wrap{flex-wrap:wrap;height:auto;padding-top:8px;padding-bottom:6px;row-gap:4px;}
  nav.sect{order:3;width:100%;margin:0 -24px;padding:0 24px 2px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 26px),transparent);mask-image:linear-gradient(90deg,transparent,#000 14px,#000 calc(100% - 26px),transparent);}
  nav.sect a{padding:5px 8px;font-size:11px;}
}
.themetoggle{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;background:var(--surface-2);
  color:var(--ink-soft);border:1px solid var(--line);border-radius:999px;padding:6px 11px;cursor:pointer;white-space:nowrap;}
.themetoggle:hover{color:var(--ink);border-color:var(--line-strong);}

section{padding:clamp(40px,6vw,72px) 0;border-top:1px solid var(--line);}
section:first-of-type{border-top:0;}
.kicker{display:flex;align-items:baseline;gap:14px;margin-bottom:10px;flex-wrap:wrap;}
.kicker .idx{font-family:var(--mono);font-size:12px;color:var(--calm);letter-spacing:.08em;}
.kicker .phase{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);
  border:1px solid var(--line-strong);border-radius:999px;padding:3px 9px;}
.sub{color:var(--ink-soft);max-width:72ch;margin-top:8px;}

/* subpage header */
.subhead{padding:clamp(30px,5vw,56px) 0 8px;}
.backlink{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;color:var(--ink-soft);text-decoration:none;
  border:1px solid var(--line);border-radius:999px;padding:6px 13px;margin-bottom:22px;transition:border-color .2s,color .2s;}
.backlink:hover{color:var(--ink);border-color:var(--line-strong);}
.subhead .eyebrow{margin-bottom:14px;}
.subhead h1{margin-bottom:14px;}
.srcnote{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:6px;}

/* hero */
.hero{padding:clamp(38px,6vw,74px) 0 26px;border-top:0;}
.hero .eyebrow{margin-bottom:18px;}
.hero h1{margin-bottom:18px;font-size:clamp(2.3rem,5.6vw,4rem);}
.hero h1 .g,.g{background:linear-gradient(100deg,var(--stress),var(--calm));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero .lede{max-width:62ch;margin-bottom:26px;}
.herogrid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start;}
@media (max-width:860px){ .herogrid{grid-template-columns:1fr;} }

/* monitor */
.monitor{border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow);overflow:hidden;}
.monitor .head{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;border-bottom:1px solid var(--line);gap:12px;flex-wrap:wrap;}
.monitor .head .label{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);display:flex;align-items:center;gap:9px;}
.state-pill{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;padding:4px 10px;border-radius:999px;border:1px solid currentColor;transition:color .6s;}
.canvas-holder{position:relative;height:150px;background:linear-gradient(180deg,transparent,var(--surface-2));}
#hrv{display:block;width:100%;height:100%;}
.readouts{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);}
.readout{padding:12px 16px;border-right:1px solid var(--line);}
.readout:last-child{border-right:0;}
.readout .k{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);}
.readout .v{font-family:var(--mono);font-size:clamp(1.3rem,3.4vw,1.7rem);font-weight:600;margin-top:3px;font-variant-numeric:tabular-nums;letter-spacing:-0.02em;}
.readout .u{font-size:.75rem;color:var(--ink-faint);font-weight:400;}
.controls{display:flex;gap:12px;align-items:center;padding:14px 16px;flex-wrap:wrap;border-top:1px solid var(--line);}
.play{font-family:var(--mono);font-size:12.5px;font-weight:600;color:#fff;background:var(--calm);border:0;border-radius:9px;padding:10px 16px;cursor:pointer;display:inline-flex;gap:8px;transition:transform .15s,filter .2s;}
.play:hover{filter:brightness(1.06);transform:translateY(-1px);}
.play[disabled]{opacity:.55;cursor:default;}
.hint{font-family:var(--mono);font-size:11px;color:var(--ink-faint);}

/* cards + grids */
.grid{display:grid;gap:16px;}
.g2{grid-template-columns:1fr 1fr;} .g3{grid-template-columns:repeat(3,1fr);} .g4{grid-template-columns:repeat(4,1fr);}
@media (max-width:820px){ .g3,.g4{grid-template-columns:1fr 1fr;} }
@media (max-width:560px){ .g2,.g3{grid-template-columns:1fr;} .g4{grid-template-columns:1fr 1fr;} }
.card{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:18px 20px;}
.card .cap{font-family:var(--mono);font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-faint);}
.card .big{font-family:var(--mono);font-size:clamp(1.6rem,4vw,2.2rem);font-weight:600;letter-spacing:-0.02em;margin:6px 0 2px;font-variant-numeric:tabular-nums;}
.card p{font-size:.92rem;color:var(--ink-soft);margin:6px 0 0;}
.card h3{margin-bottom:6px;}

/* clickable nav cards (hub -> subpages) */
a.navcard{display:block;text-decoration:none;color:var(--ink);border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);
  padding:20px;transition:border-color .2s,transform .15s;position:relative;overflow:hidden;}
a.navcard:hover{border-color:var(--calm);transform:translateY(-2px);}
a.navcard .nc-top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
a.navcard .nc-badge{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--calm);background:var(--calm-wash);border-radius:999px;padding:4px 9px;}
a.navcard h3{margin:12px 0 6px;font-size:1.06rem;}
a.navcard p{font-size:.9rem;color:var(--ink-soft);margin:0;}
a.navcard .nc-meta{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:12px;display:flex;align-items:center;gap:8px;}
a.navcard .arw{margin-left:auto;color:var(--calm);font-family:var(--mono);transition:transform .2s;}
a.navcard:hover .arw{transform:translateX(3px);}

/* method cycle */
.cycle{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px;}
.cyc{flex:1;min-width:130px;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:14px 16px;}
.cyc .n{font-family:var(--mono);font-size:10px;color:var(--calm);letter-spacing:.1em;}
.cyc .t{font-family:var(--mono);font-size:.98rem;font-weight:600;margin-top:4px;}
.cyc .d{font-size:.82rem;color:var(--ink-soft);margin-top:4px;}

/* tables (methods, competitors, data) */
.tablewrap{margin-top:20px;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);}
.tscroll{overflow-x:auto;}
table.data{width:100%;border-collapse:collapse;font-size:.9rem;min-width:640px;}
table.data th{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);text-align:left;
  background:var(--surface-2);padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap;}
table.data td{padding:12px 16px;border-top:1px solid var(--line);color:var(--ink-soft);vertical-align:top;background:var(--surface);}
table.data td b,table.data td strong{color:var(--ink);}
table.data tr:hover td{background:var(--surface-2);}
table.data .mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.yes{color:var(--calm);font-family:var(--mono);} .no{color:var(--ink-faint);font-family:var(--mono);} .part{color:var(--stress-2);font-family:var(--mono);font-size:.82rem;}

/* progress track */
.track{display:flex;gap:0;margin-top:22px;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);}
.tstep{flex:1;padding:16px 14px;border-right:1px solid var(--line);background:var(--surface);}
.tstep:last-child{border-right:0;}
.tstep .tn{font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--ink-faint);}
.tstep .tt{font-family:var(--mono);font-size:.98rem;font-weight:600;margin-top:5px;}
.tstep .ts{font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;margin-top:8px;display:inline-block;padding:3px 8px;border-radius:999px;}
.ts.ok{color:var(--calm);background:var(--calm-wash);} .ts.now{color:var(--stress);background:var(--stress-wash);}
.tstep .bar{height:3px;margin-top:12px;border-radius:2px;background:var(--surface-2);overflow:hidden;}
.tstep .bar i{display:block;height:100%;background:var(--calm);width:0;transition:width 1s ease;}
@media (max-width:720px){ .track{flex-wrap:wrap;} .tstep{flex:1 1 45%;border-right:0;border-top:1px solid var(--line);} }

/* expandable evidence */
.ev{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);overflow:hidden;}
.ev>.evh{width:100%;text-align:left;border:0;background:none;cursor:pointer;color:var(--ink);font-family:inherit;
  display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center;padding:18px 20px;}
.ev .et{font-family:var(--mono);font-size:1.02rem;font-weight:600;}
.ev .em{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:3px;letter-spacing:.02em;}
.ev .chev{width:24px;height:24px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--ink-soft);transition:transform .3s,background .2s;}
.ev.open .chev{transform:rotate(180deg);background:var(--calm);color:#fff;border-color:var(--calm);}
.ev .evb{max-height:0;overflow:hidden;transition:max-height .45s cubic-bezier(.4,0,.2,1);}
.ev.open .evb{max-height:1200px;}
@media (prefers-reduced-motion: reduce){ .ev .evb{transition:none;} }
.ev .evi{padding:2px 20px 22px;border-top:1px dashed var(--line);}
.ev ul{margin:14px 0 0;padding-left:18px;} .ev li{margin-bottom:7px;color:var(--ink-soft);}
.ev li b{color:var(--ink);}

/* quotes */
.quote{font-family:var(--mono);font-size:.9rem;line-height:1.55;color:var(--ink);border-left:2px solid var(--stress);padding-left:14px;margin:14px 0 6px;}
.quote.calm{border-left-color:var(--calm);}
.attr{font-size:11.5px;color:var(--ink-faint);}
.bigquote{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:22px 24px;margin:14px 0;}
.bigquote .q{font-family:var(--mono);font-size:1.02rem;line-height:1.5;color:var(--ink);}
.bigquote .a{font-size:12px;color:var(--ink-faint);margin-top:12px;font-family:var(--mono);}

/* matrix */
.matrix{margin-top:20px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:22px;}
.matx{display:grid;grid-template-columns:150px 1fr 60px;align-items:center;gap:16px;padding:13px 0;border-top:1px solid var(--line);}
.matx:first-of-type{border-top:0;}
.matx .opt{font-family:var(--mono);font-size:.94rem;}
.matx .opt small{display:block;color:var(--ink-faint);font-size:11px;margin-top:2px;}
.bartrack{height:12px;border-radius:999px;background:var(--surface-2);overflow:hidden;}
.barfill{height:100%;border-radius:999px;width:0;transition:width 1.1s cubic-bezier(.2,.7,.2,1);}
@media (prefers-reduced-motion: reduce){ .barfill{transition:none;} }
.mscore{font-family:var(--mono);font-size:1.1rem;font-weight:600;text-align:right;font-variant-numeric:tabular-nums;}
.mwin .opt,.mwin .mscore{color:var(--calm);} .mlose{opacity:.85;}
.mnote{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:14px;}

/* callout */
.callout{margin-top:22px;border:1px solid color-mix(in srgb,var(--stress) 40%,var(--line));border-radius:16px;
  background:linear-gradient(180deg,var(--stress-wash),transparent);padding:24px;box-shadow:var(--shadow);}
.callout .tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--stress);}
.callout h3{margin:8px 0 8px;font-size:1.2rem;}
.vs{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;margin-top:14px;}
@media (max-width:560px){ .vs{grid-template-columns:1fr;} .vs .mid{display:none;} }
.vs .side{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:14px 16px;}
.vs .side .h{font-family:var(--mono);font-size:12px;font-weight:600;}
.vs .side.s .h{color:var(--stress);} .vs .side.c .h{color:var(--calm);}
.vs .side p{font-size:.86rem;color:var(--ink-soft);margin:6px 0 0;}
.vs .mid{font-family:var(--mono);font-size:12px;color:var(--ink-faint);text-align:center;}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px;}
.chip{font-family:var(--mono);font-size:11px;padding:5px 10px;border-radius:999px;border:1px solid var(--line-strong);color:var(--ink-soft);}
.chip.ok{color:var(--calm);border-color:color-mix(in srgb,var(--calm) 45%,transparent);background:var(--calm-wash);}
.chip.warn{color:var(--stress);border-color:color-mix(in srgb,var(--stress) 45%,transparent);background:var(--stress-wash);}

/* concept + build cards */
.concept{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:20px;}
.concept .code{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--calm);}
.concept h3{margin:8px 0 6px;} .concept p{font-size:.9rem;color:var(--ink-soft);margin:0 0 10px;}
.concept .lever{font-family:var(--mono);font-size:11px;color:var(--ink-faint);border-top:1px solid var(--line);padding-top:10px;}
.build{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);overflow:hidden;}
.build .mock{height:110px;background:linear-gradient(135deg,var(--surface-2),var(--bg-2));display:grid;place-items:center;border-bottom:1px solid var(--line);}
.build .mock .wf{font-family:var(--mono);font-size:11px;color:var(--calm);letter-spacing:.1em;}
.build .bd{padding:16px 18px;} .build .bd .st{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--calm);}
.build .bd h3{margin:4px 0 6px;font-size:1rem;} .build .bd p{font-size:.86rem;color:var(--ink-soft);margin:0;}

/* questions */
.q{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:18px 20px;display:grid;grid-template-columns:34px 1fr;gap:14px;align-items:start;}
.q .qn{font-family:var(--mono);font-size:1.1rem;font-weight:600;color:var(--stress);}
.q .qt{font-size:.96rem;color:var(--ink);}
.q .qt small{display:block;color:var(--ink-faint);font-size:.82rem;margin-top:5px;font-family:var(--mono);}

/* prose block for long-form content */
.prose{max-width:72ch;}
.prose p{margin:0 0 1em;color:var(--ink-soft);}
.prose h3{margin:26px 0 10px;color:var(--ink);}
.prose ul{padding-left:20px;} .prose li{margin-bottom:8px;color:var(--ink-soft);}
.prose li b,.prose p b{color:var(--ink);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 0;}

/* footer */
footer{border-top:1px solid var(--line);padding:36px 0 60px;}
footer .cols{display:grid;grid-template-columns:1.3fr 1fr;gap:28px;}
@media (max-width:720px){ footer .cols{grid-template-columns:1fr;} }
footer h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 12px;}
footer .src{font-size:13px;color:var(--ink-soft);margin-bottom:8px;line-height:1.45;}
footer .fine{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:24px;}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){ .reveal{opacity:1;transform:none;transition:none;} .dot{animation:none;} .barfill,.bfill,.cfill,.mini .mf,.rail .rbar i{transition:none;} }
:focus-visible{outline:2px solid var(--calm);outline-offset:3px;border-radius:6px;}

/* double diamond svg */
#diamond text{font-family:var(--mono);}
#diamond .base{stroke:var(--line-strong);fill:none;}
#diamond .dpath{transition:fill .3s;}
#diamond .d1{fill:var(--stress-wash);stroke:var(--stress);}
#diamond .d2{fill:var(--calm-wash);stroke:var(--calm);}
#diamond .lab{fill:var(--ink-soft);font-size:11px;letter-spacing:.15em;text-anchor:middle;}
#diamond .lab.dim{fill:var(--ink-faint);font-size:10px;letter-spacing:.05em;}
#diamond .node{fill:var(--ink);font-size:12px;}
#diamond .node.s{fill:var(--stress);} #diamond .node.strong{font-size:13.5px;font-weight:600;}
#diamond .sm{fill:var(--ink-faint);font-size:10px;} #diamond .sm.c{fill:var(--calm);}
#diamond .mid{text-anchor:middle;} #diamond .end{text-anchor:end;}
.ddwrap{margin-top:22px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:10px;}
.ddscroll{overflow-x:auto;} #diamond{display:block;width:100%;min-width:620px;height:auto;}
/* ===== ambient lo-fi player pill ===== */
.lofi{position:fixed;right:18px;bottom:18px;z-index:70;display:flex;align-items:center;gap:10px;
  background:color-mix(in srgb,var(--surface) 90%,transparent);backdrop-filter:blur(12px) saturate(1.2);
  border:1px solid var(--line-strong);border-radius:999px;padding:8px 15px 8px 9px;box-shadow:var(--shadow);
  font-family:var(--mono);cursor:pointer;color:var(--ink);max-width:min(80vw,300px);transition:border-color .2s,transform .15s;}
.lofi:hover{border-color:var(--calm);transform:translateY(-1px);}
.lofi .ic{width:30px;height:30px;border-radius:50%;background:var(--calm);color:#fff;display:grid;place-items:center;flex:none;font-size:12px;line-height:1;}
.lofi .eq{display:flex;align-items:flex-end;gap:2px;height:15px;width:16px;flex:none;}
.lofi .eq i{width:3px;background:var(--calm);border-radius:1px;height:4px;opacity:.5;}
.lofi.playing .eq i{opacity:1;animation:eqbar 900ms ease-in-out infinite;}
.lofi.playing .eq i:nth-child(2){animation-delay:.15s;} .lofi.playing .eq i:nth-child(3){animation-delay:.3s;} .lofi.playing .eq i:nth-child(4){animation-delay:.45s;}
@keyframes eqbar{0%,100%{height:4px;}50%{height:15px;}}
.lofi .meta{display:flex;flex-direction:column;line-height:1.25;overflow:hidden;text-align:left;}
.lofi .meta .t{font-size:11.5px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.lofi .meta .s{font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);}
@media (prefers-reduced-motion: reduce){ .lofi.playing .eq i{animation:none;height:9px;} }
@media (max-width:560px){ .lofi .meta{display:none;} .lofi{padding:8px;} }

/* ===== v2 additions — requirement frame, journey rail, hand-offs, highlights ===== */
mark,.hl{background:linear-gradient(180deg,transparent 55%,var(--calm-wash) 55%);color:var(--ink);padding:0 2px;border-radius:2px;font-weight:600;}
.hl.s{background:linear-gradient(180deg,transparent 55%,var(--stress-wash) 55%);}
.keynum{font-family:var(--mono);font-weight:600;color:var(--calm);font-variant-numeric:tabular-nums;}

/* 5W1H requirement frame */
.w5{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:22px;}
@media (max-width:980px){ .w5{grid-template-columns:repeat(3,1fr);} }
@media (max-width:560px){ .w5{grid-template-columns:1fr 1fr;} }
.w5 .w{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:16px 16px 14px;position:relative;overflow:hidden;min-height:150px;display:flex;flex-direction:column;}
.w5 .w::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--calm);opacity:.8;}
.w5 .w.s::before{background:var(--stress);}
.w5 .w .k{font-family:var(--mono);font-size:22px;font-weight:600;letter-spacing:-0.02em;color:var(--calm);line-height:1;}
.w5 .w.s .k{color:var(--stress);}
.w5 .w .l{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);margin-top:6px;}
.w5 .w .a{font-size:.9rem;color:var(--ink);margin-top:10px;line-height:1.45;}
.w5 .w .a b{color:var(--calm);}
.w5 .w.s .a b{color:var(--stress);}
.w5 .w .src{font-family:var(--mono);font-size:10px;color:var(--ink-faint);margin-top:auto;padding-top:10px;}

/* journey rail (design-thinking stepper) */
.rail{margin-top:22px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow);overflow:hidden;}
.rail .rs{display:grid;grid-template-columns:repeat(6,1fr);}
@media (max-width:900px){ .rail .rs{grid-template-columns:repeat(3,1fr);} }
@media (max-width:560px){ .rail .rs{grid-template-columns:1fr 1fr;} }
.rail a.st{display:block;padding:16px 16px 14px;text-decoration:none;color:inherit;border-right:1px solid var(--line);position:relative;transition:background .2s;}
.rail a.st:last-child{border-right:0;}
.rail a.st:hover{background:var(--surface-2);}
.rail a.st .n{font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--ink-faint);display:flex;justify-content:space-between;align-items:center;}
.rail a.st .n i{font-style:normal;font-size:9px;padding:2px 7px;border-radius:999px;letter-spacing:.06em;}
.rail a.st .n i.ok{color:var(--calm);background:var(--calm-wash);} .rail a.st .n i.now{color:var(--stress);background:var(--stress-wash);} .rail a.st .n i.next{color:var(--ink-faint);border:1px solid var(--line-strong);}
.rail a.st .t{font-family:var(--mono);font-size:1rem;font-weight:600;margin-top:6px;}
.rail a.st .qd{font-size:.8rem;color:var(--ink-soft);margin-top:4px;line-height:1.4;}
.rail a.st .o{font-family:var(--mono);font-size:10.5px;color:var(--calm);margin-top:9px;}
.rail a.st .o::before{content:"→ ";color:var(--ink-faint);}
.rail a.st::after{content:"";position:absolute;right:-1px;top:0;bottom:0;width:1px;}
.rail .rbar{height:3px;background:var(--surface-2);position:relative;}
.rail .rbar i{position:absolute;left:0;top:0;bottom:0;background:linear-gradient(90deg,var(--calm),var(--calm-2));width:0;transition:width 1.2s ease;}

/* phase hand-off connector between hub sections */
.handoff{margin:34px auto 0;max-width:var(--maxw);padding:0 24px;}
.handoff .hbox{display:grid;grid-template-columns:auto 1fr auto 1fr auto;gap:12px;align-items:center;border:1px dashed var(--line-strong);border-radius:14px;padding:12px 16px;background:color-mix(in srgb,var(--surface) 70%,transparent);}
@media (max-width:760px){ .handoff .hbox{grid-template-columns:1fr;gap:6px;} .handoff .harr{display:none;} }
.handoff .hk{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);}
.handoff .hv{font-size:.86rem;color:var(--ink);}
.handoff .hv b{color:var(--calm);}
.handoff .harr{font-family:var(--mono);color:var(--calm);font-size:16px;text-align:center;}
.handoff .hnext{font-family:var(--mono);font-size:11px;color:var(--calm);text-decoration:none;white-space:nowrap;border:1px solid color-mix(in srgb,var(--calm) 40%,transparent);border-radius:999px;padding:5px 11px;background:var(--calm-wash);}

/* mini posterior strip (hub) */
.minis{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:18px;}
@media (max-width:820px){ .minis{grid-template-columns:1fr 1fr;} }
.mini{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:12px 14px;}
.mini .mk{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--ink-soft);display:flex;justify-content:space-between;}
.mini .mv{font-family:var(--mono);font-weight:600;color:var(--ink);}
.mini .mt{height:6px;border-radius:999px;background:var(--surface-2);overflow:hidden;margin-top:8px;}
.mini .mf{height:100%;width:0;border-radius:999px;transition:width .8s ease;}
.mini .md{font-size:.78rem;color:var(--ink-faint);margin-top:7px;line-height:1.35;}

/* ===== decision engine page ===== */
.formula{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-family:var(--mono);font-size:.95rem;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:16px 18px;margin-top:18px;}
.formula .f{padding:6px 10px;border-radius:8px;background:var(--surface-2);}
.formula .f.c{color:var(--calm);} .formula .f.s{color:var(--stress);}
.formula .eq{color:var(--ink-faint);}

.ctlbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:16px;}
.ctlbar .lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin-right:4px;}
.seg{display:inline-flex;border:1px solid var(--line-strong);border-radius:999px;overflow:hidden;}
.seg button{font-family:var(--mono);font-size:11px;letter-spacing:.04em;background:none;border:0;color:var(--ink-soft);padding:6px 12px;cursor:pointer;border-right:1px solid var(--line);}
.seg button:last-child{border-right:0;}
.seg button.on{background:var(--calm);color:#fff;}
.seg button[data-val="-1"].on{background:var(--stress);}
.seg button[data-val="0"].on{background:var(--surface-2);color:var(--ink);}
.btn{font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;background:var(--surface-2);color:var(--ink);border:1px solid var(--line-strong);border-radius:999px;padding:7px 13px;cursor:pointer;transition:border-color .2s;}
.btn:hover{border-color:var(--calm);}
.btn.primary{background:var(--calm);color:#fff;border-color:var(--calm);}
.btn.on{border-color:var(--calm);color:var(--calm);background:var(--calm-wash);}

.weights{display:grid;grid-template-columns:1fr 1fr;gap:6px 22px;margin-top:14px;}
@media (max-width:640px){ .weights{grid-template-columns:1fr;} }
.wrow{display:grid;grid-template-columns:150px 1fr 48px;gap:10px;align-items:center;font-size:.86rem;}
@media (max-width:420px){ .wrow{grid-template-columns:118px 1fr 44px;font-size:.8rem;} }
.wrow label{color:var(--ink-soft);} .wrow b{font-family:var(--mono);text-align:right;font-variant-numeric:tabular-nums;}
.wsum{grid-column:1/-1;font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:4px;}
input[type=range]{accent-color:var(--calm);width:100%;margin:0;}
.pertrow{display:flex;gap:10px;align-items:center;font-family:var(--mono);font-size:11px;color:var(--ink-soft);}
.pertrow input{width:130px;}

.mcx{display:grid;grid-template-columns:150px 1fr 190px 90px;align-items:center;gap:16px;padding:14px 0;border-top:1px solid var(--line);}
.mcx:first-child{border-top:0;}
@media (max-width:760px){ .mcx{grid-template-columns:1fr auto;} .mcx .mctrack{grid-column:1/-1;order:3;} .mcx .mcnum{order:4;} .mcx .mcwin{order:2;} }
.mcx .opt{font-family:var(--mono);font-size:.94rem;} .mcx .opt small{display:block;color:var(--ink-faint);font-size:11px;margin-top:2px;}
.mctrack{position:relative;height:14px;border-radius:999px;background:var(--surface-2);}
.mcband{position:absolute;top:2px;bottom:2px;border-radius:999px;background:color-mix(in srgb,var(--ink-faint) 30%,transparent);}
.mcmode{position:absolute;top:-3px;width:4px;height:20px;border-radius:2px;transform:translateX(-2px);}
.mcnum{font-family:var(--mono);font-variant-numeric:tabular-nums;} .mcnum b{font-size:1.1rem;} .mcnum small{display:block;font-size:10.5px;color:var(--ink-faint);}
.mcwin{font-family:var(--mono);font-size:1.05rem;font-weight:600;text-align:right;color:var(--ink-faint);} .mcwin.lead{color:var(--calm);} .mcwin small{display:block;font-size:10px;font-weight:400;letter-spacing:.06em;}
.histwrap{margin-top:14px;border-top:1px dashed var(--line);padding-top:12px;}
#hist{display:block;width:100%;height:150px;}
.hleg{display:flex;gap:14px;font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);margin-top:6px;}
.hleg i{display:inline-block;width:10px;height:3px;border-radius:2px;margin-right:6px;vertical-align:middle;}

.tornado{margin-top:14px;}
.tbase{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-bottom:10px;}
.trow{display:grid;grid-template-columns:150px 1fr 110px;gap:12px;align-items:center;padding:6px 0;font-size:.85rem;}
@media (max-width:640px){ .trow{grid-template-columns:1fr 84px;} .trow .tn{grid-column:1/-1;} .trow .tv{font-size:10px;} }
.trow .tn{color:var(--ink-soft);}
.ttrack{position:relative;height:12px;background:var(--surface-2);border-radius:999px;}
.ttrack i{position:absolute;top:2px;bottom:2px;background:var(--calm);opacity:.55;border-radius:999px;}
.ttrack b{position:absolute;top:-3px;width:2px;height:18px;background:var(--ink);}
.trow .tv{font-family:var(--mono);font-size:11px;color:var(--ink-soft);text-align:right;font-variant-numeric:tabular-nums;}

.assump{border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow);padding:20px 22px;margin-top:16px;}
.ahead{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:start;}
.acode{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--calm);text-transform:uppercase;}
.ahead h3{margin-top:6px;font-size:1.05rem;line-height:1.3;}
.apost{text-align:right;} .apost .k{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);}
.apost .v{font-family:var(--mono);font-size:1.9rem;font-weight:600;letter-spacing:-0.02em;font-variant-numeric:tabular-nums;line-height:1.1;}
.belief{margin-top:14px;}
.btrack{position:relative;height:14px;border-radius:999px;background:var(--surface-2);}
.bfill{height:100%;border-radius:999px;transition:width .5s ease,background .3s;}
.tick{position:absolute;top:-4px;width:2px;height:22px;transform:translateX(-1px);}
.tick.kill{background:var(--stress);} .tick.ok{background:var(--calm);}
.pin{position:absolute;top:50%;width:12px;height:12px;border-radius:50%;transform:translate(-50%,-50%);border:2px solid var(--surface);box-shadow:0 0 0 1px var(--line-strong);}
.pin.prior{background:var(--ink-faint);} .pin.post{background:var(--ink);}
.bleg{display:flex;justify-content:space-between;font-family:var(--mono);font-size:10px;color:var(--ink-faint);margin-top:6px;}
.bleg .bl.kill{color:var(--stress);} .bleg .bl.ok{color:var(--calm);}
.priorrow{display:grid;grid-template-columns:110px 200px 1fr;gap:12px;align-items:center;margin-top:14px;font-size:.86rem;}
@media (max-width:640px){ .priorrow{grid-template-columns:1fr;} }
.priorrow label{font-family:var(--mono);font-size:11px;color:var(--ink-soft);} .priorrow label b{color:var(--ink);margin-left:6px;}
.priorrow .why{color:var(--ink-faint);font-size:.8rem;line-height:1.4;}
.evlist{margin-top:14px;border-top:1px solid var(--line);}
.evhead,.evrow{display:grid;grid-template-columns:34px 26px 1fr 190px;gap:10px;align-items:center;padding:9px 0;border-bottom:1px solid var(--line);}
@media (max-width:640px){ .evhead{display:none;} .evrow{grid-template-columns:34px 26px 1fr;} .evrow .lrctl{grid-column:1/-1;} }
.evhead{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);}
.evrow.off .evtxt,.evrow.off .lrctl,.evrow.off .qtag{opacity:.4;}
.evtog{position:relative;width:30px;height:18px;display:block;}
.evtog input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer;}
.evtog span{position:absolute;inset:0;border-radius:999px;background:var(--surface-2);border:1px solid var(--line-strong);transition:background .2s;}
.evtog span::after{content:"";position:absolute;top:2px;left:2px;width:12px;height:12px;border-radius:50%;background:var(--ink-faint);transition:transform .2s,background .2s;}
.evtog input:checked+span{background:var(--calm-wash);border-color:var(--calm);}
.evtog input:checked+span::after{transform:translateX(12px);background:var(--calm);}
.qtag{font-family:var(--mono);font-size:10px;font-weight:600;width:22px;height:22px;border-radius:6px;display:grid;place-items:center;border:1px solid var(--line-strong);color:var(--ink-soft);}
.qtag.qM{color:var(--calm);border-color:var(--calm);} .qtag.qV,.qtag.qN{color:var(--stress-2);border-color:var(--stress-2);}
.evtxt .evt{font-size:.86rem;color:var(--ink);line-height:1.4;} .evtxt .evs{font-family:var(--mono);font-size:10px;color:var(--ink-faint);margin-top:2px;}
.lrctl{display:grid;grid-template-columns:1fr 60px;gap:8px;align-items:center;}
.lrctl .lrv{font-family:var(--mono);font-size:11px;font-variant-numeric:tabular-nums;text-align:right;}
.pdlist{margin-top:14px;border:1px dashed var(--line-strong);border-radius:12px;padding:10px 14px;background:color-mix(in srgb,var(--surface-2) 60%,transparent);}
.pdhead{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:6px;}
.pdrow{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:8px 0;border-top:1px solid var(--line);}
.pdrow:first-of-type{border-top:0;}
@media (max-width:640px){ .pdrow{grid-template-columns:1fr;} }
.pdt{font-size:.85rem;color:var(--ink);} .pdlr{display:block;font-family:var(--mono);font-size:10px;color:var(--ink-faint);margin-top:2px;} .pdlr b{color:var(--ink-soft);}
.arith{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:12px;word-break:break-word;} .arith b{color:var(--ink);}

.cvia{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:18px 20px;}
.ctop{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:start;}
.ccode{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--calm);}
.cvia h3{margin:4px 0 2px;font-size:1rem;} .csub{font-size:.8rem;color:var(--ink-faint);}
.cjoint{text-align:right;} .cjoint .k{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);} .cjoint .v{font-family:var(--mono);font-size:1.5rem;font-weight:600;font-variant-numeric:tabular-nums;}
.ctrack{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden;margin-top:12px;} .cfill{height:100%;background:linear-gradient(90deg,var(--stress),var(--calm));transition:width .5s;}
.cweak{font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);margin-top:10px;} .cweak b{color:var(--stress);}

.gate{border:1px solid color-mix(in srgb,var(--calm) 40%,var(--line));border-radius:16px;background:linear-gradient(180deg,var(--calm-wash),transparent);padding:22px 24px;box-shadow:var(--shadow);margin-top:16px;}
.gverdict{font-family:var(--mono);font-size:clamp(1.3rem,3vw,1.8rem);font-weight:600;letter-spacing:-0.01em;}
.gnote{color:var(--ink-soft);margin:8px 0 14px;font-size:.92rem;}
.glist{display:grid;gap:6px;}
.gc{display:grid;grid-template-columns:24px 1fr auto;gap:10px;align-items:center;font-size:.88rem;padding:8px 12px;border-radius:10px;background:var(--surface);border:1px solid var(--line);}
.gc .gm{font-family:var(--mono);font-weight:600;} .gc.ok .gm{color:var(--calm);} .gc.no .gm{color:var(--stress);}
.gc .gv{font-family:var(--mono);font-size:11px;color:var(--ink-soft);}
.gpiv{margin-top:14px;border-top:1px dashed var(--line-strong);padding-top:10px;} .gpiv p{font-size:.86rem;color:var(--ink-soft);margin:6px 0 0;} .gpiv b{color:var(--stress);}
.exportout{width:100%;min-height:200px;margin-top:12px;font-family:var(--mono);font-size:11px;background:var(--surface-2);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:12px;}
.legendq{display:flex;flex-wrap:wrap;gap:8px 16px;font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);margin-top:12px;}
.legendq span b{display:inline-grid;place-items:center;width:18px;height:18px;border:1px solid var(--line-strong);border-radius:5px;margin-right:6px;color:var(--ink-soft);font-weight:600;font-size:9.5px;}

/* survey instrument page */
.blockmap{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin-top:22px;}
@media (max-width:980px){ .blockmap{grid-template-columns:repeat(4,1fr);} }
@media (max-width:600px){ .blockmap{grid-template-columns:1fr 1fr;} }
.blockmap a{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:12px 12px 10px;transition:border-color .2s,transform .15s;}
.blockmap a:hover{border-color:var(--calm);transform:translateY(-2px);}
.blockmap .bk{font-family:var(--mono);font-size:20px;font-weight:600;color:var(--calm);line-height:1;}
.blockmap .bf{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin-top:6px;}
.blockmap .bt{font-size:.82rem;color:var(--ink);margin-top:6px;line-height:1.35;}
.blockmap .bn{font-family:var(--mono);font-size:10px;color:var(--calm);margin-top:8px;}
.qitem{border-top:1px solid var(--line);padding:14px 0;}
.qitem:first-child{border-top:0;}
.qitem .qh{display:flex;flex-wrap:wrap;gap:8px;align-items:baseline;}
.qitem .qc{font-family:var(--mono);font-size:11px;font-weight:600;color:var(--calm);letter-spacing:.06em;}
.qitem .qtitle{font-weight:600;color:var(--ink);font-size:.95rem;}
.qitem .qtype{font-family:var(--mono);font-size:10px;color:var(--ink-faint);letter-spacing:.06em;}
.qitem .qtext{font-size:.9rem;color:var(--ink-soft);margin-top:6px;line-height:1.5;}
.qitem .qtext.zh{color:var(--ink-soft);}
.qitem .qopts{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-top:5px;line-height:1.5;}
.qitem .qwhy{margin-top:8px;font-size:.82rem;color:var(--ink);border-left:2px solid var(--calm);padding-left:10px;line-height:1.45;}
.qitem .qwhy b{color:var(--calm);}
.qitem .qfeeds{font-family:var(--mono);font-size:10px;color:var(--ink-faint);margin-top:6px;}
.qitem .qfeeds b{color:var(--stress);}
table.data td.tag{font-family:var(--mono);font-size:11px;white-space:nowrap;}

/* deep-dive footer navigation (injected by app.js on subpages) */
.deepdives{border-top:1px solid var(--line);padding:22px 0 0;}
.deepdives .wrap{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.deepdives .lbl{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);margin-right:6px;}
.deepdives a{font-family:var(--mono);font-size:11px;color:var(--ink-soft);text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:5px 10px;transition:border-color .2s,color .2s;}
.deepdives a:hover{color:var(--ink);border-color:var(--calm);}
.deepdives a.here{color:var(--calm);border-color:var(--calm);background:var(--calm-wash);}
.seg button[aria-pressed="true"]{outline:none;}

/* print — dissertation appendix */
@media print{
  .field,.lofi,#prog,.themetoggle,nav.sect,.handoff .hnext,.backlink,.skip,.deepdives,.ctlbar,.priorrow input,.lrctl input,.evtog{display:none !important;}
  body{background:#fff;color:#000;font-size:11pt;}
  header.bar{position:static;backdrop-filter:none;background:#fff;}
  .reveal{opacity:1 !important;transform:none !important;}
  .ev .evb{max-height:none !important;}
  .card,.assump,.cvia,.gate,.callout,.navcard,.concept,.build,.q,.w5 .w,.mini,.ev{break-inside:avoid;box-shadow:none;}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:9pt;color:#555;}
  section{padding:18pt 0;}
  .barfill,.bfill,.cfill,.mini .mf{transition:none;}
}

/* decision model at a glance (hub) */
.glance{margin-top:12px;border-top:1px solid var(--line);padding-top:10px;}
.glance .gh{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:8px;}
.glance .gh a{letter-spacing:.04em;text-transform:none;font-size:11px;}
.grow{display:grid;grid-template-columns:44px 1fr 44px;gap:8px;align-items:center;padding:3px 0;}
.grow .gl{font-family:var(--mono);font-size:10.5px;color:var(--ink-soft);}
.grow .gt{position:relative;height:7px;border-radius:999px;background:var(--surface-2);}
.grow .gf{position:absolute;left:0;top:0;bottom:0;border-radius:999px;transition:width .6s ease;}
.grow .gk{position:absolute;top:-3px;width:2px;height:13px;background:var(--calm);opacity:.9;}
.grow .gp{position:absolute;top:50%;width:7px;height:7px;border-radius:50%;background:var(--ink-faint);transform:translate(-50%,-50%);border:1px solid var(--surface);}
.grow .gv{font-family:var(--mono);font-size:10.5px;text-align:right;font-variant-numeric:tabular-nums;color:var(--ink);}
.glegend{font-family:var(--mono);font-size:9.5px;color:var(--ink-faint);margin-top:6px;}
/* decision-flow diagram (hub) */
.flow{margin-top:22px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:var(--shadow);padding:12px;}
.flow .sc{overflow-x:auto;} .flow svg{display:block;min-width:900px;width:100%;height:auto;font-family:var(--mono);}
.flow .box{fill:var(--surface-2);stroke:var(--line-strong);} .flow .box.c{stroke:var(--calm);} .flow .box.s{stroke:var(--stress);}
.flow .t{fill:var(--ink);font-size:12px;font-weight:600;} .flow .d{fill:var(--ink-soft);font-size:10px;} .flow .l{fill:var(--ink-faint);font-size:9.5px;letter-spacing:.1em;}
.flow .n{fill:var(--calm);font-size:10px;font-weight:600;} .flow .n.s{fill:var(--stress);}
.flow .ar{stroke:var(--calm);fill:none;stroke-width:1.5;}
.flow .verdict{fill:var(--ink);font-size:13px;font-weight:600;}

/* roadmap (hub) */
.rm-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px;}
@media (max-width:820px){.rm-cols{grid-template-columns:1fr;}}
.rm-col{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);padding:16px 18px;}
.rm-col .h{display:flex;justify-content:space-between;align-items:baseline;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);padding-bottom:10px;border-bottom:1px solid var(--line);}
.rm-col .h b{font-size:1.2rem;letter-spacing:0;color:var(--ink);}
.rm-col.done .h{color:var(--calm);} .rm-col.now .h{color:var(--stress);} .rm-col.next .h{color:var(--ink-soft);}
.rm-col ul{list-style:none;margin:10px 0 0;padding:0;}
.rm-col li{display:grid;grid-template-columns:18px 1fr auto;gap:8px;align-items:baseline;padding:6px 0;border-top:1px dashed var(--line);font-size:.86rem;color:var(--ink);}
.rm-col li:first-child{border-top:0;}
.rm-col li .m{font-family:var(--mono);font-size:11px;} .done li .m{color:var(--calm);} .now li .m{color:var(--stress);} .next li .m{color:var(--ink-faint);}
.rm-col li .w{font-family:var(--mono);font-size:10px;color:var(--ink-faint);white-space:nowrap;}
.rm-col li a{color:inherit;text-decoration:none;border-bottom:1px solid var(--line-strong);} .rm-col li a:hover{color:var(--calm);border-color:var(--calm);}
.gantt{margin-top:16px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:var(--shadow);overflow:hidden;}
.gantt .gsc{overflow-x:auto;}
.gantt .gin{min-width:760px;position:relative;}
.gantt .grow2{display:grid;grid-template-columns:230px 1fr;align-items:center;border-top:1px solid var(--line);}
.gantt .grow2:first-child{border-top:0;}
.gantt .grow2.hd{background:var(--surface-2);}
.gantt .gl2{font-family:var(--mono);font-size:11px;color:var(--ink-soft);padding:8px 14px;border-right:1px solid var(--line);}
.gantt .gl2 b{color:var(--ink);font-weight:600;} .gantt .gl2 small{display:block;font-size:9.5px;color:var(--ink-faint);letter-spacing:.06em;}
.gantt .gtr{position:relative;height:34px;background:repeating-linear-gradient(90deg,transparent 0 calc(20% - 1px),var(--line) calc(20% - 1px) 20%);}
.gantt .hd .gtr{height:28px;background:none;display:grid;grid-template-columns:repeat(5,1fr);}
.gantt .hd .gtr span{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);padding:7px 10px;border-left:1px solid var(--line);}
.gantt .hd .gtr span:first-child{border-left:0;}
.gantt .bar{position:absolute;top:8px;height:18px;border-radius:999px;font-family:var(--mono);font-size:9.5px;line-height:18px;padding:0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.gantt .bar.done{background:var(--calm);color:#fff;} .gantt .bar.now{background:var(--stress);color:#fff;} .gantt .bar.next{background:transparent;border:1.5px dashed var(--ink-faint);color:var(--ink-soft);}
.gantt .bar.post{background:transparent;border:1.5px dotted var(--line-strong);color:var(--ink-faint);}
.gantt .blab{position:absolute;top:9px;margin-left:6px;font-family:var(--mono);font-size:9.5px;color:var(--ink-soft);white-space:nowrap;}
.gantt .today{position:absolute;top:0;bottom:0;width:2px;background:var(--stress);opacity:.7;z-index:2;}
.gantt .today::after{content:attr(data-label);position:absolute;top:2px;left:5px;font-family:var(--mono);font-size:9px;color:var(--stress);letter-spacing:.06em;white-space:nowrap;}
.gantt .ms{position:absolute;top:50%;width:12px;height:12px;transform:translate(-50%,-50%) rotate(45deg);background:var(--ink);border-radius:2px;}
.gantt .ms.next{background:transparent;border:1.5px dashed var(--ink-faint);}
.gantt .mslab{position:absolute;top:9px;margin-left:10px;font-family:var(--mono);font-size:9.5px;color:var(--ink-soft);white-space:nowrap;}
.rm-note{font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);margin-top:10px;display:flex;flex-wrap:wrap;gap:14px;}
.rm-note i{display:inline-block;width:14px;height:8px;border-radius:999px;vertical-align:middle;margin-right:5px;}

/* language toggle (injected by assets/i18n-zh.js) */
.langtoggle{margin-left:auto;}
.langtoggle+.themetoggle{margin-left:0;}