/* tnscope site. Research-paper figure meets lab notebook. System fonts only: no requests leave the page. */
:root {
  color-scheme: light;
  --paper: #f4f7fa;
  --surface: #ffffff;
  --ink: #111b2e;
  --slate: #4b586b;
  --rule: #cbd5e1;
  --grid: rgba(17, 27, 46, 0.055);
  --teal: #14808a;
  --teal-ink: #0d6670;
  --track: #e6ecf3;
  --code-bg: #eef3f8;
  --forbid: #c0392b;
  --a-block: #c0392b; --a-review: #d97a00; --a-flag: #b08900; --a-pass: #1f8a5b;
  --s1: #6b7a90; --s2: #14808a; --sv: #4a3aa7;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --paper: #0d1322; --surface: #121a2d; --ink: #e6ebf5; --slate: #a3aec2; --rule: #26324a;
    --grid: rgba(160, 190, 255, 0.06); --teal: #4fc1c8; --teal-ink: #6fd3d9; --track: #1b2640;
    --code-bg: #0f1729; --forbid: #ff8a7a;
    --a-block: #ff8a7a; --a-review: #f0a040; --a-flag: #e0c050; --a-pass: #4fc18a;
    --s1: #8a99b0; --s2: #4fc1c8; --sv: #9085e9;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #0d1322; --surface: #121a2d; --ink: #e6ebf5; --slate: #a3aec2; --rule: #26324a;
  --grid: rgba(160, 190, 255, 0.06); --teal: #4fc1c8; --teal-ink: #6fd3d9; --track: #1b2640;
  --code-bg: #0f1729; --forbid: #ff8a7a;
  --a-block: #ff8a7a; --a-review: #f0a040; --a-flag: #e0c050; --a-pass: #4fc18a;
  --s1: #8a99b0; --s2: #4fc1c8; --sv: #9085e9;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }  /* class rules like .tokens { display: flex } must not defeat the hidden attribute */
html { font-size: 17px; scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
body {
  margin: 0; color: var(--ink); background-color: var(--paper);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
  font: 1.05rem/1.65 var(--serif); -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 22px; }
a { color: var(--teal-ink); text-underline-offset: 3px; }
code { font: 0.86em var(--mono); background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 3px; }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; border-radius: 2px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 20; font: 0.9rem var(--sans); }
.skip:focus { left: 8px; }

/* header */
.bar { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(6px); border-bottom: 1px solid var(--rule); }
.bar-in { display: flex; align-items: center; gap: 22px; min-height: 54px; flex-wrap: wrap; }
.brand { font: 700 1.15rem var(--serif); color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.bar nav { display: flex; gap: 20px; flex: 1; font: 0.9rem var(--sans); }
.bar nav a { color: var(--slate); text-decoration: none; padding: 4px 0; }
.bar nav a:hover { color: var(--ink); text-decoration: underline; }
.bar-end { display: flex; align-items: center; gap: 12px; font: 0.9rem var(--sans); }
.gh { color: var(--ink); }
.theme { background: none; border: 1px solid var(--rule); color: var(--ink); width: 34px; height: 34px; border-radius: 4px; display: grid; place-items: center; cursor: pointer; }
.theme:hover { border-color: var(--slate); }

/* hero */
.hero { padding-top: 64px; padding-bottom: 28px; }
h1, h2, h3 { text-wrap: balance; }
.lede, .col p { text-wrap: pretty; }
h1 { font: 600 clamp(2.15rem, 5.2vw, 3.7rem)/1.08 var(--serif); letter-spacing: -0.022em; margin: 0 0 22px; max-width: 17em; }
.lede { font-size: 1.2rem; line-height: 1.55; color: var(--slate); max-width: 38em; margin: 0 0 26px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 0 0 44px; }
.btn { font: 600 0.95rem var(--sans); text-decoration: none; padding: 10px 18px; border: 1px solid var(--ink); color: var(--ink); border-radius: 3px; }
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--teal-ink); border-color: var(--teal-ink); }

/* figures */
.fig { margin: 0; background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; padding: 22px; }
.fig figcaption { font: 0.84rem/1.5 var(--sans); color: var(--slate); margin-top: 16px; max-width: 70ch; }
.fig figcaption strong { color: var(--ink); }
.fig-head { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-bottom: 16px; }
.seg { display: inline-flex; border: 1px solid var(--rule); border-radius: 4px; overflow: hidden; flex-wrap: wrap; }
.seg-btn { font: 600 0.85rem var(--sans); background: transparent; color: var(--slate); border: 0; padding: 7px 14px; cursor: pointer; }
.seg-btn + .seg-btn { border-left: 1px solid var(--rule); }
.seg-btn:hover { color: var(--ink); background: var(--track); }
.seg-btn[aria-pressed="true"], .seg-btn[aria-selected="true"] { background: var(--ink); color: var(--paper); }
.live { margin: 0; font: 0.88rem var(--sans); color: var(--slate); min-height: 1.4em; }

/* sections */
.sec { padding-top: 56px; padding-bottom: 12px; display: grid; grid-template-columns: minmax(0, 68ch) minmax(190px, 1fr); gap: 0 56px; align-items: start; }
.sec > .fig { grid-column: 1 / -1; margin: 22px 0 30px; }
.col { grid-column: 1; }
.col > :first-child { margin-top: 0; }
.col p { margin: 0 0 1.05em; }
h2 { font: 600 1.9rem/1.2 var(--serif); letter-spacing: -0.012em; margin: 0 0 18px; }
h3 { font: 600 1.25rem/1.3 var(--serif); margin: 22px 0 10px; }
.note { grid-column: 2; grid-row: 1; border-left: 2px solid var(--rule); padding-left: 16px; font: 0.88rem/1.55 var(--sans); color: var(--slate); margin-top: 52px; }
.note p { margin: 0 0 0.8em; }

/* pipeline + architecture svg */
.pipe, .arch { width: 100%; height: auto; display: block; color: var(--slate); font-family: var(--sans); }
.p-box rect, .a-in rect { fill: var(--paper); stroke: var(--ink); stroke-width: 1.4; }
.p-box.out rect { fill: color-mix(in srgb, var(--teal) 16%, var(--paper)); stroke: var(--teal-ink); }
.p-box text, .a-pack text, .a-core text { fill: var(--ink); font-size: 15px; font-weight: 600; }
.a-in text { fill: var(--ink); font-size: 13px; font-weight: 600; }
.pipe .sub, .arch .sub { fill: var(--slate); font-size: 12.5px; font-weight: 400; }
.pipe .lbl { fill: var(--slate); font-size: 11.5px; font-weight: 400; }
.pipe .n { font: 700 13px var(--mono); fill: var(--teal-ink); }
.a-core rect { fill: none; stroke: var(--ink); stroke-width: 1.4; }
.a-core .h { font-size: 15px; font-weight: 700; }
.a-pack rect { fill: var(--paper); stroke: var(--teal-ink); stroke-width: 1.4; }
.a-pack .h { font: 700 17px var(--mono); }

/* entities table */
.ents, .tview table { width: 100%; border-collapse: collapse; font: 0.95rem var(--sans); }
.ents th, .ents td, .tview th, .tview td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--rule); vertical-align: middle; }
.ents thead th, .tview thead th { font-weight: 600; color: var(--slate); font-size: 0.85rem; }
.ents tbody th { width: 8rem; font-weight: 400; vertical-align: top; }
.chip { display: inline-flex; align-items: center; gap: 7px; font: 700 0.8rem var(--mono); border: 1px solid var(--rule); border-radius: 3px; padding: 3px 9px 3px 7px; background: var(--paper); color: var(--ink); }

/* code */
.code { position: relative; background: var(--code-bg); border: 1px solid var(--rule); border-radius: 4px; margin: 0 0 1.2em; }
.code pre { margin: 0; padding: 44px 18px 16px; overflow-x: auto; font: 0.87rem/1.65 var(--mono); }
.code code { background: none; padding: 0; font-size: inherit; }
.copy { position: absolute; top: 9px; right: 9px; font: 600 0.78rem var(--sans); background: var(--surface); color: var(--ink); border: 1px solid var(--rule); border-radius: 3px; padding: 4px 10px; cursor: pointer; }
.copy:hover { border-color: var(--slate); }

/* footer */
.foot { margin-top: 64px; border-top: 1px solid var(--rule); padding: 30px 0 48px; font: 0.92rem var(--sans); color: var(--slate); background: var(--paper); }
.foot p { margin: 0 0 10px; }
.foot a { margin-right: 18px; }
.foot .fine { font-size: 0.82rem; }

/* narrow screens: the margin column folds under the text */
@media (max-width: 860px) {
  .sec { grid-template-columns: minmax(0, 1fr); }
  .col, .note { grid-column: 1; grid-row: auto; }
  .note { margin: 4px 0 18px; }
}
@media (max-width: 640px) {
  html { font-size: 16px; }
  .hero { padding-top: 40px; }
  .bar-in { gap: 6px 14px; padding-top: 6px; padding-bottom: 6px; }
  .bar nav { order: 3; flex-basis: 100%; gap: 16px; overflow-x: auto; }
  .fig { padding: 16px; }
  .ents tbody th { width: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* phones: keep diagram text legible by letting the figure scroll sideways instead of shrinking the SVG */
@media (max-width: 760px) {
  .fig.wide { overflow-x: auto; }
  .pipe, .arch { min-width: 620px; }
}


/* language switch */
.langsel select { font: 0.85rem var(--sans); color: var(--ink); background: var(--paper); border: 1px solid var(--rule); border-radius: 4px; height: 34px; padding: 0 8px; cursor: pointer; }
.langsel select:hover { border-color: var(--slate); }
:lang(ko) body { word-break: keep-all; overflow-wrap: break-word; }
:lang(ko) h1, :lang(ko) h2, :lang(ko) h3, :lang(ja) h1, :lang(ja) h2, :lang(ja) h3, :lang(zh) h1, :lang(zh) h2, :lang(zh) h3 { letter-spacing: 0; }
:lang(ko) body, :lang(ja) body, :lang(zh) body { line-height: 1.8; }
:lang(ja) h1, :lang(zh) h1, :lang(ko) h1 { line-height: 1.25; }


/* diagram variants */
.p-box.rt rect { stroke-dasharray: 0; fill: color-mix(in srgb, var(--teal) 9%, var(--paper)); }
.p-box.opt rect, .a-pack.opt rect { stroke-dasharray: 5 4; }
.a-data rect { fill: var(--paper); stroke: var(--slate); stroke-width: 1.2; }
.a-core text.h { fill: var(--ink); }

/* Figure 1: example picker and three columns */
.sentence { font: 1.3rem/1.5 var(--serif); margin: 0 0 18px; }
.cols3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.card { border: 1px solid var(--rule); border-radius: 4px; padding: 14px 16px; background: var(--paper); font-family: var(--sans); }
.card h3 { font: 600 0.85rem var(--sans); color: var(--slate); margin: 0 0 10px; }
.card .big { font: 700 2.1rem/1 var(--mono); margin: 0 0 8px; }
.card .row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; font-size: 0.85rem; color: var(--slate); margin-bottom: 10px; }
.card .m { font: 0.92rem/1.5 var(--mono); color: var(--ink); overflow-wrap: anywhere; margin: 6px 0 0; }
.card .m-l { font-size: 0.78rem; color: var(--slate); margin: 0; }
.ex-note { font: 0.92rem/1.55 var(--sans); color: var(--slate); margin: 16px 0 0; max-width: 70ch; }
.act { display: inline-block; font: 700 0.8rem var(--mono); padding: 2px 9px; border-radius: 3px; border: 1px solid var(--c, var(--rule)); color: var(--c, var(--ink)); background: color-mix(in srgb, var(--c, transparent) 12%, transparent); }
.a-block { --c: var(--a-block); } .a-review { --c: var(--a-review); } .a-flag { --c: var(--a-flag); } .a-pass { --c: var(--a-pass); }
.seg.vert { flex-direction: column; }

/* Figure 3: fusion controls and scale */
.ctls { display: grid; gap: 14px 28px; grid-template-columns: repeat(auto-fit, minmax(240px, max-content)); margin-bottom: 22px; font-family: var(--sans); }
.ctl-l { display: block; font-size: 0.8rem; color: var(--slate); margin-bottom: 6px; }
.scale { position: relative; height: 98px; margin: 6px 44px 8px; font-family: var(--sans); }
.scale .track { position: absolute; left: 0; right: 0; top: 58px; height: 14px; border-radius: 3px; overflow: hidden; display: flex; }
.scale .z { height: 100%; opacity: 0.32; background: var(--c); }
.scale .tick { position: absolute; top: 76px; font: 0.74rem var(--mono); color: var(--slate); transform: translateX(-50%); }
.scale .mk { position: absolute; top: 0; width: 0; transform: translateX(-50%); text-align: center; transition: left .35s ease; }
.scale .mk span { display: block; font: 600 0.72rem/15px var(--sans); color: var(--slate); white-space: nowrap; }
.scale .mk i { display: block; width: 3px; margin: 2px auto 0; background: var(--mc); }
.scale .mk.final span { color: var(--ink); font-weight: 700; }
.result { font: 1rem var(--sans); margin: 4px 0 6px; display: flex; gap: 10px 14px; align-items: center; flex-wrap: wrap; }
.result strong { font: 700 1.6rem var(--mono); }
.r-l { color: var(--slate); font-size: 0.85rem; }
.why { font: 0.92rem/1.55 var(--sans); color: var(--slate); margin: 0; max-width: 70ch; min-height: 3em; }

/* Figure 4: grouped bars */
.legend { list-style: none; display: flex; gap: 6px 18px; flex-wrap: wrap; margin: 0; padding: 0; font: 0.82rem var(--sans); color: var(--slate); }
.legend li { display: inline-flex; align-items: center; gap: 7px; }
.k { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
.k.s1, .b.s1 { background: var(--s1); } .k.s2, .b.s2 { background: var(--s2); } .k.sv, .b.sv { background: var(--sv); }
.bars { font-family: var(--sans); }
.grp { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr); column-gap: 14px; align-items: center; padding: 10px 0 12px; border-bottom: 1px solid var(--rule); }
.grp:last-of-type { border-bottom: 0; }
.grp:hover, .grp:focus-visible { background: color-mix(in srgb, var(--teal) 6%, transparent); }
.g-name { font-size: 0.95rem; font-weight: 600; }
.g-name span { display: block; font: 0.78rem var(--mono); color: var(--slate); font-weight: 400; }
.g-rows { display: grid; gap: 4px; }
.g-row { display: grid; grid-template-columns: minmax(0, 1fr) 3rem; column-gap: 10px; align-items: center; }
.g-track { height: 11px; background: var(--track); border-radius: 0 3px 3px 0; }
.b { height: 100%; width: calc(var(--v) * 100%); border-radius: 0 3px 3px 0; transition: width .4s ease; }
.g-val { font: 700 0.85rem var(--mono); text-align: right; }
.axis { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr); column-gap: 14px; margin-top: 6px; }
.axis .ticks { grid-column: 2; display: flex; justify-content: space-between; font: 0.76rem var(--mono); color: var(--slate); padding-right: 3.6rem; }
.tview { margin-top: 18px; font-family: var(--sans); }
.tview summary { cursor: pointer; font-size: 0.9rem; color: var(--teal-ink); font-weight: 600; }
.tview table { margin-top: 10px; }
.tview td, .tview th { font-size: 0.88rem; }
.tview .num, .ents .num { font-family: var(--mono); white-space: nowrap; }
.tview { overflow-x: auto; }

/* status list */
.status { margin: 0; padding-left: 1.2em; }
.status li { margin: 0 0 0.7em; text-wrap: pretty; }

@media (max-width: 860px) {
  .cols3 { grid-template-columns: minmax(0, 1fr); }
  .grp, .axis { grid-template-columns: minmax(0, 1fr); }
  .axis .ticks { grid-column: 1; }
}