:root {

  color-scheme: light;

  --bg:     #f7f7f5;
  --panel:  #f3f2ef;
  --card:   #fcfcfb;
  --fg:     #111111;
  --muted:  #6b6b6b;

  --faint:  #70706b;
  --rule:   #e7e7e4;

  --ink:    #111111;
  --on-ink: #ffffff;

  --accent:     #5b7fff;
  --accent-ink: #2f56e0;
  --on-accent:  #ffffff;

  --accent-wash: rgb(91 127 255 / .14);

  --mark: rgb(255 176 32 / .38);

  --mark-solid: #ffb020;

  --switch-off: var(--accent);

  --sans:  "Pretendard Variable", Pretendard,
           -apple-system, "Apple SD Gothic Neo", BlinkMacSystemFont,
           system-ui, "Segoe UI Variable Text", "Segoe UI",
           "Malgun Gothic", "맑은 고딕", "Noto Sans KR", "Nanum Gothic",
           Roboto, Helvetica, Arial, sans-serif;

  --sans-head: "Gmarket Sans", "Pretendard Variable", Pretendard,
               -apple-system, "Apple SD Gothic Neo", BlinkMacSystemFont,
               system-ui, "Segoe UI Variable Display", "Segoe UI",
               "Malgun Gothic", "맑은 고딕", "Noto Sans KR", sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia,
           "Nanum Myeongjo", "Batang", serif;
  --mono:  ui-monospace, SFMono-Regular, "SF Mono", Consolas, monospace;

  --t-display: clamp(2.8rem, 9vw, 5rem);
  --t-h2:      clamp(1.4rem, 3vw, 1.9rem);
  --t-h3:      1.2rem;
  --t-lede:    1.125rem;
  --t-body:    1rem;

  --t-small:   1rem;
  --t-label:   .875rem;
  --t-caps:    .75rem;

  --w-bold: 600;
  --w-semi: 550;
  --w-medium: 500;

  --s-1: .3rem;
  --s-2: .7rem;
  --s-3: 1.2rem;
  --s-4: 1.8rem;
  --s-5: 2.8rem;
  --s-6: clamp(4rem, 9vw, 6.5rem);

  --radius:      999px;

  --t-move: .24s;
  --radius-card: 1.5rem;

  --card-edge: rgb(16 24 40 / .06);
  --shadow-1:  rgb(16 24 40 / .04);
  --shadow-2:  rgb(16 24 40 / .1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: var(--t-body);

  line-height: 1.7;

  word-break: keep-all;
  overflow-wrap: break-word;
  padding: clamp(2rem, 6vw, 4.5rem) 1.5rem;
  display: flex;
  justify-content: center;
}

.page { width: 100%; max-width: 58rem; }

a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

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

.name {
  font-family: var(--sans-head);
  font-size: var(--t-display); font-weight: 700;
  letter-spacing: -.03em; line-height: 1.05;
}
.name em { font-style: normal; color: var(--accent); }

.lede {
  font-size: var(--t-lede); line-height: 1.7; letter-spacing: -.01em; color: var(--muted);
  text-align: left; hyphens: none;

}
.lede b { color: var(--fg); font-weight: var(--w-bold); }

.card {
  background: var(--card);
  border: 1px solid var(--card-edge);
  border-radius: 1rem;
  padding: var(--s-4) var(--s-5);
  box-shadow: 0 1px 2px var(--shadow-1), 0 16px 32px -16px var(--shadow-2);
}

.stats { display: grid; grid-template-columns: repeat(3, 1fr); }
.stats > * { padding-inline: var(--s-3); text-align: center; }
.stats > * + * { border-left: 1px solid var(--rule); }
.stat__n {
  font-size: clamp(1.9rem, 5vw, 2.75rem); font-weight: var(--w-bold);
  letter-spacing: -.03em; line-height: 1.05;

  font-variant-numeric: tabular-nums;
}

.stat__l { font-size: var(--t-label); color: var(--muted); margin-top: .7rem;
           text-wrap: balance; }

.links { display: flex; gap: .4rem; flex-wrap: nowrap; }
.links a {
  display: grid; place-items: center; position: relative;
  width: 2.6rem; height: 2.6rem; flex: 0 0 auto;
  border: 1px solid var(--rule); border-radius: var(--radius);
  background: var(--card); color: var(--muted); text-decoration: none;
}

.links a span {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap;
}
.links a:hover { color: var(--fg); border-color: var(--fg); }

.links svg { width: 1.1rem; height: 1.1rem; fill: currentColor; display: block; }

.toc { display: flex; flex-direction: column; gap: .05rem; }
.toc a {
  font-size: var(--t-label); color: var(--muted); text-decoration: none;
  padding: .2rem .6rem; border-radius: var(--radius); white-space: nowrap;
}
.toc a:hover { color: var(--accent-ink); background: var(--card); }

@media (min-width: 64rem) {
  .page {

    max-width: 77.2rem;
    display: grid; grid-template-columns: 9.25rem minmax(0, 1fr) 9.25rem;
    column-gap: var(--s-4);
  }
  .page > * { grid-column: 2; }

  .toc-rail {
    grid-column: 3; grid-row: 1 / span 50;
    position: sticky; top: 6rem; align-self: start; margin-top: 1.5rem;
  }
}

.tools {
  display: flex; align-items: center; justify-content: center; gap: .3rem;
  width: fit-content; margin: 0 auto var(--s-3);
  height: 2.4rem; padding: 0 .75rem; border-radius: var(--radius);
  background: color-mix(in srgb, var(--card) 82%, transparent);
  backdrop-filter: blur(8px);
}

.lang {
  display: inline-flex; align-items: center; gap: .45rem;
  line-height: 1; white-space: nowrap; text-decoration: none;
}

.lang__ko, .lang__en {
  font-size: var(--t-label); letter-spacing: .06em; color: var(--faint);

  min-width: 2rem; text-align: center;

  transition: color var(--t-move) ease, font-weight var(--t-move) ease;
}
.lang:not(.lang--on) .lang__ko,
.lang--on .lang__en { color: var(--fg); font-weight: var(--w-bold); }

.lang__sw {
  width: 2.7rem; height: 1.55rem; flex: 0 0 auto;
  display: inline-flex; align-items: center; padding: 3px;
  border-radius: var(--radius); background: var(--switch-off);

  box-shadow: inset 0 0 0 1px rgb(16 24 40 / .12);
  transition: background var(--t-move) ease;
}

.lang--on .lang__sw { background: var(--mark-solid); }
.lang__sw i {
  width: 1.15rem; height: 1.15rem; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 2px rgb(16 24 40 / .3);
  margin-left: 0;
  transition: margin-left var(--t-move) ease;
}

.lang--on .lang__sw i { margin-left: auto; }

.lang:not(.lang--on):hover .lang__sw { background: var(--mark-solid); }
.lang:not(.lang--on):hover .lang__sw i { margin-left: auto; }
.lang:not(.lang--on):hover .lang__ko { color: var(--faint); font-weight: 400; }
.lang:not(.lang--on):hover .lang__en { color: var(--fg); font-weight: var(--w-bold); }

.lang--on:hover .lang__sw { background: var(--switch-off); }
.lang--on:hover .lang__sw i { margin-left: 0; }
.lang--on:hover .lang__en { color: var(--faint); font-weight: 400; }
.lang--on:hover .lang__ko { color: var(--fg); font-weight: var(--w-bold); }

.subhead { font-size: var(--t-label); font-weight: var(--w-bold); color: var(--faint); }

.toc-check {
  position: fixed; top: 1rem; right: 1rem;
  width: 1px; height: 1px;
  opacity: 0; overflow: hidden; clip-path: inset(50%);
}
.toc-btn { display: none; }

@media (max-width: 63.999rem) {

  body { padding-top: 1rem; }
  .tools { height: 2.6rem; margin-bottom: var(--s-4); }

  .toc-btn {
    display: flex; flex-direction: column; justify-content: center; gap: 4px;
    width: 2.6rem; height: 2.6rem; padding: .65rem;
    border-radius: .75rem; cursor: pointer;
    position: fixed; top: 1rem; right: 1rem; z-index: 20;

    background: color-mix(in srgb, var(--accent) 18%, transparent);
    backdrop-filter: blur(6px);
  }
  .toc-btn:hover { background: color-mix(in srgb, var(--accent) 28%, transparent); }
  .toc-btn span { display: block; height: 2px; border-radius: 1px; background: var(--accent-ink); }
  .toc-check:focus-visible + .toc-btn { outline: 2px solid var(--accent); outline-offset: 3px; }

  .toc { display: none; }
  .toc-check:checked ~ .toc {
    display: flex; flex-direction: column; gap: .05rem;
    position: fixed; top: 4.4rem; right: 1rem; z-index: 19;
    background: var(--card); border: 1px solid var(--card-edge);
    border-radius: .9rem; padding: .45rem;
    box-shadow: 0 1px 2px var(--shadow-1), 0 18px 36px -12px var(--shadow-2);

    max-height: calc(100dvh - 6rem); overflow-y: auto;
  }
  .toc a { padding: .4rem .9rem; }

  .toc-check:checked + .toc-btn span:nth-child(2) { opacity: 0; }
  .toc-check:checked + .toc-btn span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .toc-check:checked + .toc-btn span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}

.totop {
  position: fixed; right: 0; bottom: 0; z-index: 25;
  display: flex; align-items: flex-end; justify-content: flex-end;
  padding: 1.1rem;
}
.totop a {
  display: grid; place-items: center;
  width: 2.6rem; height: 2.6rem; border-radius: .75rem;
  color: var(--accent-ink); text-decoration: none; font-size: 1.05rem; line-height: 1;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  backdrop-filter: blur(6px);
}
.totop a:hover { background: color-mix(in srgb, var(--accent) 28%, transparent); }

@media (hover: hover) {
  .totop { width: 6rem; height: 6rem; }
  .totop a {
    opacity: 0; transform: translateY(1.4rem);
    transition: opacity .18s ease, transform .18s ease;
  }
  .totop:hover a, .totop a:focus-visible { opacity: 1; transform: none; }
}

.topdf {
  position: absolute; left: 0; top: 0; z-index: 25;
  display: flex; flex-direction: column; align-items: flex-start; padding: 1rem;

  width: 5rem;

  cursor: pointer;
}
.topdf .pdf-btn {
  font-family: inherit; font-size: var(--t-label); font-weight: 500;
  flex: none; height: 2.6rem; cursor: pointer; white-space: nowrap;
  padding: 0 var(--s-3); border: 0; border-radius: var(--radius);
  color: var(--accent-ink);

  pointer-events: none;

  background: color-mix(in srgb, var(--accent) 18%, var(--card));
  box-shadow: 0 2px 10px -4px var(--shadow-2);
  opacity: 0; transform: translateY(-.6rem);
  transition: opacity .18s ease, transform .18s ease;
}

.topdf .pdf-btn { display: inline-flex; align-items: center; }
.topdf:hover .pdf-btn, .pdf-check:focus-visible + .pdf-btn,
.pdf-check:checked + .pdf-btn {
  opacity: 1; transform: none; pointer-events: auto;
}
.topdf .pdf-btn:hover { background: color-mix(in srgb, var(--accent) 28%, var(--card)); }
.pdf-check { position: fixed; width: 1px; height: 1px; opacity: 0; clip-path: inset(50%); }

.pdf-panel {

  display: none; flex: none; margin-top: .4rem; padding: .8rem .9rem;
  width: 15rem; max-width: calc(100vw - 2rem);
  background: var(--card); border: 1px solid var(--rule); border-radius: .7rem;
  box-shadow: 0 8px 28px -12px var(--shadow-2);
  text-align: left; pointer-events: auto;

  counter-reset: picked;
}
.pdf-check:checked ~ .pdf-panel { display: block; }
.topdf:has(.pdf-check:checked) { width: auto; }
.pdf-panel__head { font-size: var(--t-caps); color: var(--faint); margin-bottom: .5rem; }
.pdf-opts { display: grid; gap: .1rem; max-height: 15rem; overflow-y: auto; }
.pdf-opt { display: flex; align-items: center; gap: .45rem;
           font-size: var(--t-label); cursor: pointer; padding: .12rem 0; }
.pdf-opt input { accent-color: var(--accent-ink); cursor: pointer; }
.pdf-opt input:checked { counter-increment: picked; }

.pdf-panel__count { font-size: var(--t-caps); color: var(--faint); margin-top: .55rem; }
.pdf-panel__n::before { content: counter(picked); font-weight: var(--w-bold); color: var(--fg); }
.pdf-panel__foot { display: flex; align-items: center; gap: .5rem; margin-top: .7rem; }
.pdf-panel__foot button {
  font-family: inherit; font-size: var(--t-label); font-weight: 500; cursor: pointer;
  flex: 1; height: 2.2rem; border: 0; border-radius: var(--radius);
  color: var(--on-accent); background: var(--accent-ink);
}
.pdf-panel__foot button:hover { filter: brightness(1.12); }
.pdf-close { font-size: var(--t-label); color: var(--faint); cursor: pointer; }
.pdf-close:hover { color: var(--fg); }

@media (hover: none) {

  .topdf .pdf-btn { transition: opacity .3s ease 2.2s, transform .3s ease 2.2s; }

  .topdf:active .pdf-btn,
  .topdf .pdf-btn:active {
    opacity: 1; transform: none; transition: none; pointer-events: auto;
  }
}

@media (min-width: 64rem) {
  .topdf {
    left: 0; right: 0; width: auto; max-width: calc(77.2rem + 3rem); margin: 0 auto;
    padding: 1rem 1.5rem; pointer-events: none;
  }
  .topdf { align-items: flex-end; }
  .topdf .pdf-btn { width: 9.25rem; pointer-events: auto; justify-content: center; }
}

section { margin-top: calc(var(--s-5) + var(--s-3)); }
.sec-head { margin-bottom: var(--s-3); display: flex; align-items: baseline; gap: .55rem; }
.sec-head .count {
  font-size: var(--t-small); color: var(--faint); font-variant-numeric: tabular-nums;
}
.sec-head h2 {
  font-family: var(--sans-head);

  font-size: var(--t-h2); font-weight: 600;
  letter-spacing: -.03em; margin-top: var(--s-1);
}

.deflist {

  display: grid; grid-template-columns: 8.5rem 1fr; gap: var(--s-3);
  padding: .7rem 0; border-bottom: 1px solid var(--rule);
}
.deflist dt { font-size: var(--t-label); font-weight: var(--w-bold); letter-spacing: 0;
              color: var(--faint); padding-top: .15rem; }
.deflist dd { font-size: var(--t-small); }

.deflist--log { grid-template-columns: 5rem 1fr; gap: var(--s-2); padding: .45rem 0; }
.deflist--log dt { text-transform: none; letter-spacing: 0; font-weight: 400; padding-top: .2rem;
                   font-size: var(--t-label); font-variant-numeric: tabular-nums; }

.deflist--log dd .sub { display: block; color: var(--muted); margin-top: .1rem; }

.deflist--pub { grid-template-columns: 5rem 1fr auto; }
.deflist--pub .pub-code {
  align-self: start; padding-top: .15rem; white-space: nowrap;
  display: flex; gap: .75rem;
}

.deflist--log dd a {
  color: var(--accent-ink); text-decoration: underline;
  text-decoration-thickness: 1px; text-underline-offset: .22em;
  text-decoration-color: color-mix(in srgb, var(--accent-ink) 40%, transparent);
}
.deflist--log dd a:hover { text-decoration-color: var(--accent-ink); }

.chips { display: flex; flex-wrap: wrap; gap: .35rem 1.1rem; }
.chips span { white-space: nowrap; }

.stack {
  display: flex; flex-wrap: wrap; gap: .3rem;
  margin-top: .5rem; padding-left: .85rem;
}
.stack span {
  font-size: var(--t-caps); line-height: 1.6;

  color: var(--accent-ink); background: transparent;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: var(--radius);
  padding: .05rem .55rem; white-space: nowrap;
}

.split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5); }
@media (max-width: 46rem) { .split { grid-template-columns: 1fr; gap: var(--s-4); } }

.deflist--tight { grid-template-columns: 5rem 1fr; gap: var(--s-2); padding: .35rem 0; }
.deflist--tight dt { text-transform: none; letter-spacing: 0; font-weight: 400;
                     color: var(--muted); padding-top: 0; font-size: var(--t-small); }

.plain { list-style: none; }
.plain li { font-size: var(--t-small); padding: .35rem 0; border-bottom: 1px solid var(--rule); }
.plain li:last-child { border-bottom: 0; }

.log {

  display: grid; grid-template-columns: 4.4rem minmax(18rem, 1fr) minmax(0, max-content);
  gap: var(--s-2) var(--s-2); align-items: baseline;
  padding: .45rem 0; border-bottom: 1px solid var(--rule);
}
.log__when { font-size: var(--t-label); color: var(--faint); font-variant-numeric: tabular-nums; }

.log__name .star {
  color: var(--faint); font-size: var(--t-caps);
  font-variant-numeric: tabular-nums; white-space: nowrap; margin-left: .1rem;
}
.log__name { display: flex; align-items: center; gap: .45rem; font-size: var(--t-small); }
.log__name a { color: inherit; text-decoration: none; }
.log__name a:hover { text-decoration: underline; text-decoration-color: var(--accent); }

.log__desc { font-size: var(--t-label); color: var(--muted); text-align: right; }

.ico {
  width: 1rem; height: 1rem; flex: 0 0 auto; border-radius: 3px;
  background-size: cover; background-position: center;
}

.entry { padding: 0 0 var(--s-5); }
.entry:last-child { padding-bottom: 0; }
.entry__top { display: flex; justify-content: space-between; align-items: baseline;
              flex-wrap: wrap; gap: .4rem .8rem; }
.entry__title { font-family: var(--sans-head);
                font-size: var(--t-h3); font-weight: var(--w-medium); letter-spacing: 0; }
.entry__when { font-size: var(--t-label); color: var(--faint); font-variant-numeric: tabular-nums; }

.entry__when span { display: block; }
.entry__sub { font-size: var(--t-small); color: var(--muted); margin-top: .15rem; }

.role {
  display: inline-block;
  font-size: var(--t-label); line-height: 1.45;
  color: var(--accent-ink); background: var(--accent-wash);
  border-radius: var(--radius); padding: .1rem .6rem;
  word-break: keep-all;
}

.role-name { display: block; padding-left: .6rem; margin-top: .3rem; }

.task { margin-top: var(--s-3); }

.task__name { font-size: var(--t-small); font-weight: var(--w-semi); }
.task ul { list-style: none; margin-top: .35rem; }

.task li { font-size: var(--t-small); color: var(--muted); padding-left: .85rem;
           line-height: 1.8; position: relative; }

.task li::before {
  content: ""; position: absolute; left: .1rem; top: .66em;
  width: .22rem; height: .22rem; border-radius: 50%; background: var(--faint);
}

.task li b, .entry__sub b {

  color: var(--fg); font-weight: inherit;
  background: var(--mark); border-radius: 3px;

  padding: .1em .28em; margin-inline: -.18em;

  white-space: nowrap;
  box-decoration-break: clone; -webkit-box-decoration-break: clone;
}

@media (max-width: 46rem) {

  .card { padding: var(--s-3) var(--s-2); }
  .stats > * { padding-inline: .35rem; }
  .stat__n { font-size: clamp(1.15rem, 5.5vw, 1.9rem); letter-spacing: -.04em; }
  .stat__n span { margin-left: .05em; }
  .stat__l { font-size: var(--t-caps); line-height: 1.35; margin-top: .45rem; }

  .lede { text-align: left; }
  .deflist { grid-template-columns: 1fr; gap: .2rem; }
  .deflist dt { padding-top: 0; }

  .deflist--log { grid-template-columns: 4.2rem 1fr; gap: .6rem; }
  .deflist--log dt { padding-top: .15rem; }
  .deflist--pub { grid-template-columns: 4.2rem 1fr; }
  .deflist--pub .pub-code { grid-column: 2; padding-top: 0; }

  .log { grid-template-columns: 4.2rem 1fr; gap: .15rem .6rem; }
  .log__desc { grid-column: 2; text-align: left; }

  .log__name, .log__name a, .deflist--log dd, .deflist dd {
    min-width: 0; overflow-wrap: anywhere;
  }
}

@media print {
  .toc-rail, .totop, .topdf { display: none; }

  @page { margin: 14mm 12mm; }

  .page { display: block; max-width: none; }

  body { background: #fff; }
  .card { box-shadow: none; border: 1px solid var(--rule); }

  .task li b, .entry__sub b { print-color-adjust: exact; -webkit-print-color-adjust: exact; }

  .entry, .log, .deflist, .task li, .cert { break-inside: avoid; }

  .sec-head, h2, h3 { break-after: avoid; }

  section { margin-top: var(--s-5); }

  body:has(#opt-contact:not(:checked)) .links     { display: none; }
  body:has(#opt-lede:not(:checked))  .lede        { display: none; }
  body:has(#opt-stats:not(:checked)) .hero__foot  { display: none; }
  body:has(#opt-work:not(:checked))  #work        { display: none; }
  body:has(#opt-teach:not(:checked)) #teach       { display: none; }
  body:has(#opt-award:not(:checked)) #award       { display: none; }
  body:has(#opt-edu:not(:checked))   #edu         { display: none; }
  body:has(#opt-stack:not(:checked)) #stack       { display: none; }
  body:has(#opt-oss:not(:checked))   #oss         { display: none; }
  body:has(#opt-pub:not(:checked))   #pub         { display: none; }
  body:has(#opt-study:not(:checked)) #study       { display: none; }
  body:has(#opt-talk:not(:checked))  #talk        { display: none; }
  body:has(#opt-etc:not(:checked))   #etc         { display: none; }

  .links { gap: 0 .9rem; flex-wrap: wrap; }
  .links a {
    width: auto; height: auto; border: 0; background: none; border-radius: 0;
    font-size: var(--t-label);

  }
  .links svg { display: none; }
  .links a::after { content: attr(data-print); }
  .hero__top { gap: .35rem var(--s-4); }
}