/* ============================================================
   IDENTIQ JOURNAL — design system
   Single source of truth. Articles link this; never inline a copy.
   ============================================================ */

:root{
  --paper:#FBFAF7; --paper-2:#F4F2EC; --ink:#1a1c20; --ink-soft:#4c4f57; --ink-faint:#8a8d94;
  --rule:#e4e1d8; --rule-soft:#eeece5;
  --navy:#1b3a6b; --navy-soft:#3a5688; --oxblood:#8c2f39; --gold:#9a7b32; --green:#2f6a4f;
  --serif:"Pretendard Variable","Pretendard",system-ui,sans-serif;
  --display:"Fraunces","Noto Serif KR",Georgia,serif;
  --sans:"Pretendard Variable","Pretendard",system-ui,sans-serif;
  --maxw:1120px; --col:720px; --side:300px; --gap:clamp(30px,4.2vw,60px);
  --fs-hero:clamp(33px,3.9vw,46px); --fs-2xl:clamp(25px,2.7vw,30px); --fs-xl:clamp(20px,1.6vw,23px);
  --fs-lg:clamp(20px,1.15vw,23px); --fs-lead:19px; --fs-body:clamp(17px,0.4vw+15.6px,18.5px);
  --fs-sm:14.5px; --fs-xs:12.5px; --fs-2xs:11px;
}
:root[data-theme="dark"]{
  --paper:#14151a; --paper-2:#1c1e24; --ink:#eceae4; --ink-soft:#b0b2b9; --ink-faint:#71747c;
  --rule:#2b2d34; --rule-soft:#23252b;
  --navy:#7ba3dd; --navy-soft:#5f83bb; --oxblood:#d3707a; --gold:#c9a24a; --green:#5aa382;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#14151a; --paper-2:#1c1e24; --ink:#eceae4; --ink-soft:#b0b2b9; --ink-faint:#71747c;
    --rule:#2b2d34; --rule-soft:#23252b;
    --navy:#7ba3dd; --navy-soft:#5f83bb; --oxblood:#d3707a; --gold:#c9a24a; --green:#5aa382;
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--serif); font-weight:400; font-size:var(--fs-body); line-height:1.75;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  /* Korean: break at word boundaries, never mid-어절 */
  word-break:keep-all; overflow-wrap:break-word;}
::selection{background:var(--navy); color:var(--paper);}
a{color:var(--navy); text-underline-offset:3px; text-decoration-thickness:1px;}
p{text-wrap:pretty}
a:focus-visible,[tabindex]:focus-visible,button:focus-visible{outline:2px solid var(--navy); outline-offset:2px}

/* ---------- Masthead ---------- */
.masthead{border-bottom:2px solid var(--ink);}
.masthead-inner{max-width:var(--maxw); margin:0 auto; padding:18px 32px 14px;
  display:flex; justify-content:space-between; align-items:flex-end; gap:20px; flex-wrap:wrap;}
.brand{display:flex; align-items:baseline; gap:12px; text-decoration:none;}
.brand .mark{font-family:var(--display); font-weight:800; font-size:26px; letter-spacing:.085em; color:var(--ink); line-height:1;}
.brand .tag{font-family:var(--sans); font-size:11px; letter-spacing:.22em; text-transform:uppercase; color:var(--ink-faint); font-weight:600;}
.mast-right{display:flex; align-items:center; gap:13px; flex-wrap:wrap;}
.masthead .meta{font-family:var(--sans); font-size:11.5px; letter-spacing:.05em; color:var(--ink-soft); text-align:right; line-height:1.7; text-transform:uppercase;}
.theme-btn{border:1px solid var(--rule); background:transparent; color:var(--ink-soft);
  font-family:var(--sans); font-size:11px; letter-spacing:.08em; padding:5px 11px; border-radius:2px; cursor:pointer; text-transform:uppercase;}
.theme-btn:hover{border-color:var(--ink-soft); color:var(--ink);}
.alt-link{font-family:var(--sans); font-size:12px; color:var(--ink-soft); text-decoration:none; border-bottom:1px solid var(--rule);}
.alt-link:hover{color:var(--navy); border-bottom-color:var(--navy);}
@media(max-width:720px){
  .masthead-inner{flex-direction:column; align-items:stretch; gap:12px; padding:15px 20px 11px;}
  .brand{flex-direction:column; align-items:flex-start; gap:5px;}
  .mast-right{justify-content:space-between; width:100%;}
  .masthead .meta{text-align:left; font-size:10.5px;}
}

/* ---------- Article shell ---------- */
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 clamp(20px,5vw,44px);}
header.article{padding:56px 0 34px; border-bottom:1px solid var(--rule);}
.kicker{font-family:var(--sans); font-size:12px; font-weight:600; letter-spacing:.18em; text-transform:uppercase; color:var(--oxblood); margin:0 0 22px;}
h1.title{font-family:var(--display); font-optical-sizing:auto; font-weight:600; font-size:var(--fs-hero);
  line-height:1.08; letter-spacing:-.022em; margin:0 0 20px; max-width:24ch; text-wrap:balance;}
.deck{font-weight:300; font-size:var(--fs-xl); line-height:1.5; color:var(--ink-soft); margin:0 0 30px; max-width:var(--col);}
.byline{font-family:var(--sans); font-size:12.5px; letter-spacing:.03em; color:var(--ink-faint); display:flex; gap:18px; flex-wrap:wrap; align-items:center;}
.byline .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-faint);display:inline-block;}
.byline b{color:var(--ink); font-weight:600;}

/* ---------- Body + margin notes ----------
   The 720px measure is only legitimate because the right column carries
   sidenotes. Never ship a narrow measure with an empty margin. */
.body{display:grid; grid-template-columns:minmax(0,var(--col)) minmax(0,var(--side));
  gap:0 var(--gap); padding:44px 0 0; align-items:start; justify-content:start;}
.flow{display:contents;}
.flow > *{grid-column:1; min-width:0;}
aside.note{grid-column:2; font-family:var(--sans); font-size:var(--fs-sm); line-height:1.62; color:var(--ink-soft);
  border-top:2px solid var(--navy); padding-top:8px; margin:8px 0 22px; max-width:290px;}
aside.note .n-lab{display:block; font-size:10.5px; letter-spacing:.12em; text-transform:uppercase; color:var(--navy); font-weight:600; margin-bottom:5px;}
aside.note.warn{border-top-color:var(--oxblood);} aside.note.warn .n-lab{color:var(--oxblood);}
@media(max-width:900px){
  .body{grid-template-columns:1fr;}
  aside.note{grid-column:1; max-width:none; margin:6px 0 26px; background:var(--paper-2); padding:14px 16px; border-top:2px solid var(--navy);}
}
.flow p{margin:0 0 22px;}
.flow p.lead{font-size:var(--fs-lead); line-height:1.64; color:var(--ink);}
.flow p.lead::before{content:""; display:block; width:44px; height:3px; background:var(--navy); margin:0 0 20px;}
h2.sec{font-family:var(--display); font-weight:600; font-size:var(--fs-lg); letter-spacing:-.018em; line-height:1.16; margin:52px 0 10px; padding-top:16px;}
h2.sec .num{font-family:var(--sans); font-size:var(--fs-2xs); font-weight:600; color:var(--oxblood); letter-spacing:.14em; text-transform:uppercase; display:block; margin-bottom:12px;}
h3.sub{font-family:var(--display); font-weight:600; font-size:var(--fs-lead); letter-spacing:-.012em; line-height:1.25;
  margin:38px 0 8px; padding-left:14px; border-left:3px solid var(--navy); color:var(--ink);}
.flow strong,.flow b{font-weight:700; color:var(--ink);}
.hl{background:linear-gradient(transparent 62%, color-mix(in srgb, var(--navy) 22%, transparent) 62%);}

/* ---------- Figure / charts ---------- */
figure{margin:40px auto; grid-column:1 / -1 !important; max-width:960px; width:100%;}
figcaption{font-family:var(--sans); font-size:var(--fs-xs); color:var(--ink-faint); margin-top:12px; line-height:1.55; letter-spacing:.01em;}
figcaption b{color:var(--ink-soft); font-weight:600;}
.chart-title{font-family:var(--sans); font-size:13.5px; font-weight:600; color:var(--ink); margin:0 0 2px;}
.chart-sub{font-family:var(--sans); font-size:11.5px; color:var(--ink-faint); margin:0 0 12px;}
.chart{width:100%; overflow-x:auto;}
svg{display:block; width:100%; height:auto; overflow:visible;}

/* ---------- Callout / pull ---------- */
.callout{border-left:3px solid var(--navy); background:var(--paper-2); padding:22px 28px; margin:34px 0;
  border-radius:0 3px 3px 0; grid-column:1/-1 !important; max-width:none;}
.callout.ox{border-left-color:var(--oxblood);}
.callout .c-lab{font-family:var(--sans); font-size:var(--fs-2xs); letter-spacing:.14em; text-transform:uppercase; color:var(--navy); font-weight:700; margin:0 0 9px;}
.callout.ox .c-lab{color:var(--oxblood);}
.callout p{margin:0; font-size:var(--fs-body);}
.pull{font-family:var(--display); font-weight:400; font-size:var(--fs-2xl); line-height:1.3; color:var(--navy);
  margin:38px 0; max-width:22ch; letter-spacing:-.01em; grid-column:1/-1 !important;}

/* Part divider — a structural break, NOT a pull quote. Different job, different form:
   the quote is an argument lifted out of the flow; this is a shelf between parts. */
.part{grid-column:1/-1 !important; max-width:none; margin:76px 0 8px; padding-top:20px;
  border-top:2px solid var(--ink); display:flex; align-items:baseline; gap:16px; flex-wrap:wrap;}
.part .n{font-family:var(--display); font-size:clamp(30px,2.4vw,40px); font-weight:600; line-height:1;
  color:var(--oxblood); letter-spacing:.02em;}
.part .t{font-family:var(--sans); font-size:13px; font-weight:600; letter-spacing:.16em;
  text-transform:uppercase; color:var(--ink-soft);}
.part + h2.sec{margin-top:30px}
@media print{.part{margin:34px 0 6px; padding-top:12px; break-after:avoid}}

/* ---------- Table ---------- */
.tbl-wrap{margin:32px 0; grid-column:1/-1 !important; max-width:none; overflow-x:auto;}
table{width:100%; border-collapse:collapse; font-family:var(--sans); font-size:var(--fs-sm);}
table caption{text-align:left; font-family:var(--sans); font-size:13.5px; font-weight:600; color:var(--ink); margin-bottom:10px;}
th,td{padding:9px 10px; text-align:right; border-bottom:1px solid var(--rule); font-variant-numeric:tabular-nums; white-space:nowrap;}
th:first-child,td:first-child{text-align:left; white-space:normal;}
thead th{font-size:11px; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-faint); font-weight:600; border-bottom:1.5px solid var(--ink-soft);}
tbody tr:hover{background:var(--paper-2);}
td.pos{color:var(--green); font-weight:600;} td.neg{color:var(--oxblood); font-weight:600;}
tr.tot td{border-top:1.5px solid var(--ink-soft); font-weight:700; color:var(--ink);}
tr.hi td{background:color-mix(in srgb, var(--navy) 7%, transparent);}
td.mut,.mut{color:var(--ink-faint);}
/* prose modifier — for tables whose cells are sentences, not figures */
table.prose th,table.prose td{white-space:normal; text-align:left; vertical-align:top; line-height:1.5;}
table.prose td{padding:12px 14px 12px 0;}
table.prose td:first-child{width:1%; white-space:nowrap; padding-right:18px;}

/* ---------- Split ---------- */
.split{display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--rule); border:1px solid var(--rule);
  margin:34px 0; grid-column:1/-1 !important; max-width:none;}
@media(max-width:620px){.split{grid-template-columns:1fr;}}
.split .cell{background:var(--paper); padding:20px 22px;}
.split .s-tag{font-family:var(--sans); font-size:11px; letter-spacing:.1em; text-transform:uppercase; font-weight:700; margin:0 0 8px;}
.split .s-tag.a{color:var(--ink-faint);} .split .s-tag.b{color:var(--oxblood);}
.split .s-body{font-family:var(--sans); font-size:14px; line-height:1.6; margin:0;}
.split .cell.a .s-body{color:var(--ink-faint);}

/* ---------- Stat strip ---------- */
.stats{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:1px; background:var(--rule);
  border:1px solid var(--rule); margin:32px 0; grid-column:1/-1 !important; max-width:none;}
@media(max-width:880px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:460px){.stats{grid-template-columns:minmax(0,1fr)}}
.stat{background:var(--paper); padding:18px 20px;}
.stat .l{font-family:var(--sans); font-size:10.5px; letter-spacing:.11em; text-transform:uppercase; color:var(--ink-faint); margin:0 0 8px;}
.stat .v{font-family:var(--display); font-size:clamp(23px,1.2rem+1.1vw,29px); font-weight:600; line-height:1.05;
  color:var(--ink); font-variant-numeric:tabular-nums;}
.stat .v.navy{color:var(--navy)} .stat .v.ox{color:var(--oxblood)} .stat .v.gr{color:var(--green)}
.stat .s{font-family:var(--sans); font-size:12.5px; color:var(--ink-faint); margin:8px 0 0; line-height:1.45;}

/* ---------- Falsifier list ---------- */
ul.fal{list-style:none; padding:0; margin:24px 0; display:flex; flex-direction:column; gap:15px;
  grid-column:1/-1 !important; max-width:none;}
ul.fal li{display:grid; grid-template-columns:auto minmax(0,1fr); gap:14px; font-family:var(--sans); font-size:14.5px; line-height:1.68;}
ul.fal .m{font-family:var(--sans); font-size:11px; font-weight:700; letter-spacing:.1em; color:var(--navy);
  border:1px solid var(--navy); border-radius:2px; padding:2px 7px; height:fit-content; margin-top:3px;}

/* ---------- Interactive widgets (T2) ---------- */
.widget{grid-column:1/-1 !important; max-width:none; border:1px solid var(--rule); background:var(--paper-2);
  border-radius:3px; padding:22px 24px; margin:34px 0;}
.widget .w-lab{font-family:var(--sans); font-size:var(--fs-2xs); letter-spacing:.14em; text-transform:uppercase;
  color:var(--navy); font-weight:700; margin:0 0 4px;}
.widget .w-sub{font-family:var(--sans); font-size:12.5px; color:var(--ink-faint); margin:0 0 18px; line-height:1.55;}
.w-ctl{display:flex; gap:22px; align-items:center; flex-wrap:wrap; margin-bottom:18px;}
.w-ctl label{font-family:var(--sans); font-size:12.5px; color:var(--ink-soft); display:flex; align-items:center; gap:10px;}
.w-ctl input[type=range]{width:min(320px,60vw); accent-color:var(--navy);}
.w-ctl input[type=number]{font-family:var(--sans); font-size:14px; width:110px; padding:6px 9px;
  border:1px solid var(--rule); border-radius:2px; background:var(--paper); color:var(--ink); font-variant-numeric:tabular-nums;}
.w-ctl select{font-family:var(--sans); font-size:13px; padding:6px 9px; border:1px solid var(--rule);
  border-radius:2px; background:var(--paper); color:var(--ink);}
.w-out{display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:1px; background:var(--rule); border:1px solid var(--rule);}
.w-out .o{background:var(--paper); padding:14px 16px;}
.w-out .o .k{font-family:var(--sans); font-size:10.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-faint); margin:0 0 7px;}
.w-out .o .v{font-family:var(--display); font-size:22px; font-weight:600; line-height:1.1; font-variant-numeric:tabular-nums;}
.w-out .o .v.ox{color:var(--oxblood)} .w-out .o .v.gr{color:var(--green)} .w-out .o .v.navy{color:var(--navy)}
.w-note{font-family:var(--sans); font-size:12px; color:var(--ink-faint); margin:14px 0 0; line-height:1.6;}
.w-band{position:relative; height:34px; margin:6px 0 4px; background:var(--paper); border:1px solid var(--rule);}
.w-band .zone{position:absolute; top:0; bottom:0; background:color-mix(in srgb, var(--navy) 16%, transparent);
  border-left:1px solid var(--navy); border-right:1px solid var(--navy);}
.w-band .mark{position:absolute; top:-4px; bottom:-4px; width:2px; background:var(--oxblood);}
.w-band .lab{position:absolute; top:38px; font-family:var(--sans); font-size:10.5px; color:var(--ink-faint); transform:translateX(-50%); white-space:nowrap;}
.w-tbl{max-height:340px; overflow:auto; border:1px solid var(--rule); background:var(--paper);}
.w-tbl table{font-size:13px} .w-tbl th{position:sticky; top:0; background:var(--paper); z-index:1; cursor:pointer;}
.w-tbl th:hover{color:var(--navy)}

/* ---------- Footer ---------- */
.foot{border-top:2px solid var(--ink); margin-top:64px; padding:30px 0 70px;}
.foot .fn{font-family:var(--sans); font-size:12.5px; color:var(--ink-soft); line-height:1.7; max-width:var(--col); margin:0 0 18px;}
.foot .fn b{color:var(--ink);}
.srcs{font-family:var(--sans); font-size:12.5px; line-height:1.95; color:var(--ink-faint); max-width:var(--col); margin:0 0 20px;}
.srcs a{color:var(--navy); text-decoration:none; border-bottom:1px solid var(--rule);}
.srcs a:hover{border-bottom-color:var(--navy);}
.disclaimer{font-family:var(--sans); font-size:11.5px; color:var(--ink-faint); max-width:var(--col); line-height:1.6;
  border-top:1px solid var(--rule); padding-top:16px;}

.tip{position:fixed; pointer-events:none; opacity:0; transition:opacity .1s; background:var(--ink); color:var(--paper);
  font-family:var(--sans); font-size:12px; padding:7px 10px; border-radius:3px; z-index:80; white-space:nowrap; line-height:1.45;}

/* ---------- Index page ---------- */
header.idx{padding:58px 0 34px; border-bottom:1px solid var(--rule);}
header.idx h1{font-family:var(--display); font-weight:600; font-size:var(--fs-hero); line-height:1.1;
  letter-spacing:-.022em; margin:0 0 18px; max-width:22ch; text-wrap:balance;}
.list .item{display:grid; grid-template-columns:minmax(0,1fr) minmax(0,300px); gap:clamp(24px,4vw,56px);
  padding:34px 0; border-bottom:1px solid var(--rule); align-items:start;}
@media(max-width:860px){.list .item{grid-template-columns:1fr; gap:16px}}
.list .num{font-family:var(--sans); font-size:var(--fs-2xs); font-weight:600; letter-spacing:.14em;
  text-transform:uppercase; color:var(--oxblood); margin:0 0 10px;}
.list h2{font-family:var(--display); font-weight:600; font-size:var(--fs-2xl); line-height:1.2;
  letter-spacing:-.018em; margin:0 0 12px; text-wrap:balance;}
.list a.t{text-decoration:none; color:inherit}
.list a.t:hover h2{color:var(--navy)}
.list p.sum{margin:0 0 16px; color:var(--ink-soft); font-size:var(--fs-sm); line-height:1.72; max-width:56ch;}
.meta-row{font-family:var(--sans); font-size:var(--fs-xs); color:var(--ink-faint); display:flex; gap:14px; flex-wrap:wrap; align-items:center;}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-faint);display:inline-block;}
.side-card{border-top:2px solid var(--navy); padding-top:9px;}
.side-card .lab{font-family:var(--sans); font-size:10.5px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--navy); font-weight:600; margin:0 0 7px;}
.side-card p{margin:0 0 10px; font-family:var(--sans); font-size:13px; line-height:1.62; color:var(--ink-soft);}
.btns{display:flex; gap:8px; flex-wrap:wrap; margin-top:4px}
.btn{display:inline-block; font-family:var(--sans); font-size:12px; font-weight:600; letter-spacing:.03em;
  border:1px solid var(--rule); padding:7px 13px; border-radius:2px; color:var(--ink-soft); background:var(--paper); text-decoration:none;}
.btn:hover{border-color:var(--navy); color:var(--navy)}
.btn.pri{border-color:var(--navy); color:var(--navy)}
.btn.pri:hover{background:var(--navy); color:var(--paper)}

/* ---------- Print → reMarkable Pro ---------- */
@media print{
  @page{ size:175mm 233mm; margin:14mm 38mm 15mm 17mm; }
  :root, :root[data-theme="dark"], :root[data-theme="light"]{
    --paper:#fff; --paper-2:#f3f1eb; --ink:#000; --ink-soft:#2f3237; --ink-faint:#5c5f66;
    --rule:#c7c4bb; --rule-soft:#dcd9d0; --navy:#123a72; --oxblood:#8c2f39; --green:#1f5c41;
  }
  *{-webkit-print-color-adjust:exact; print-color-adjust:exact}
  html,body{background:#fff !important; color:#000 !important}
  body{font-size:10.8pt; line-height:1.62}
  .theme-btn,.alt-link,.tip,.w-ctl{display:none !important}
  .masthead{border-bottom:1.5px solid #000} .masthead-inner{max-width:none; padding:0 0 7px}
  .wrap{max-width:none; padding:0}
  .body{display:block !important; padding:16px 0 0}
  .flow{display:block !important}
  .flow > *{grid-column:auto !important; max-width:none !important}
  aside.note{grid-column:auto !important; max-width:none; margin:13px 0 16px; background:var(--paper-2);
    border-top:0; border-left:2.5px solid var(--navy); padding:9px 13px; font-size:9.3pt; line-height:1.5}
  header.article{padding:24px 0 18px} h1.title{font-size:30pt} .deck{font-size:13.5pt}
  h2.sec{margin:24px 0 8px; padding-top:10px; font-size:16pt}
  .w-tbl{max-height:none; overflow:visible}
  figure,svg,.tbl-wrap,table,.split,.callout,aside.note,.pull,.stats,ul.fal,.widget,.foot{break-inside:avoid; page-break-inside:avoid}
  a{color:var(--navy); text-decoration:none}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}