:root {
  --bg: #f7f7f5;
  --card: #fbfbfa;
  --ink: #0b0b0b;
  --ink-2: #2b2b2b;
  --muted: #6d6d6a;
  --faint: #a3a39f;
  --line: #dcdcd8;
  --cell: #e7e7e3;
  --radius: 28px;
  --pad-x: clamp(20px, 5vw, 72px);
  --pad-y: clamp(28px, 5vh, 56px);
  --font: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
  color-scheme: light;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: -0.01em;
  word-break: keep-all;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
a:focus-visible,
.btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -0.04em; line-height: 1.1; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: 12px; top: -48px; z-index: 100;
  background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; text-decoration: none;
}
.skip:focus { top: 12px; }

.anchor { display: block; height: 0; }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; line-height: 1.6; }
.num { font-variant-numeric: tabular-nums; color: var(--faint); font-weight: 600; margin-right: 0.6em; }
.eyebrow {
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.02em; color: var(--muted);
  text-transform: none; margin-bottom: 1.2rem;
}
.section-title { font-size: clamp(1.7rem, 3.2vw, 2.6rem); margin-bottom: 1.6rem; }
.date { font-weight: 700; color: var(--ink); }


.tag {
  display: inline-block; padding: 1px 9px; margin-right: 6px;
  border: 1px solid var(--ink); border-radius: 999px;
  font-size: 0.72rem; font-weight: 600; line-height: 1.7; letter-spacing: 0; vertical-align: 2px;
}
.tags { display: inline; }

/* ---------------------------------------------------------------- 카드 스택 */
.stack { position: relative; }

.card {
  position: relative;
  background: var(--card);
  padding: var(--pad-y) var(--pad-x);
  border-top: 1px solid var(--line);
}
.card--hero { border-top: 0; }

/* JS가 화면 크기·동작 줄이기 설정을 확인한 뒤에만 켠다. 없으면 일반 세로 문서. */
.stack.is-stacking .card {
  position: sticky;
  top: var(--stick-top, 0px);
  min-height: 100vh;
  min-height: 100svh;
  border-radius: var(--radius) var(--radius) 0 0;
  border-top: 0;
  box-shadow: 0 -1px 0 var(--line), 0 -18px 48px -24px rgba(0, 0, 0, 0.18);
}
.stack.is-stacking .card--hero { border-radius: 0; box-shadow: none; }
.stack.is-stacking .card--docs { min-height: 100vh; min-height: 100svh; }

/* ---------------------------------------------------------------- 공통 상단 정보 */
.meta-bar {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px;
  font-size: 0.72rem; line-height: 1.5; color: var(--faint);
}
.meta-bar span:nth-child(2) { text-align: center; }
.meta-bar__right { text-align: right; }

/* ---------------------------------------------------------------- 첫 화면 */
.card--hero { min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; }
.hero { flex: 1; display: flex; flex-direction: column; justify-content: center; padding: 6vh 0 2vh; }
.hero__title {
  font-size: clamp(2.2rem, 8.4vw, 8.6rem);
  font-weight: 800; line-height: 1.04; letter-spacing: -0.055em;
}
.hero__title span { display: block; }
.hero__rule { width: 1px; height: clamp(40px, 9vh, 110px); background: var(--ink); margin: clamp(24px, 4vh, 44px) 0; }
.hero__sub { max-width: 34em; color: var(--ink-2); font-size: clamp(1rem, 1.4vw, 1.15rem); }
.hero__menu ul {
  list-style: none; margin: 3vh 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 8px 28px;
}
.hero__menu a {
  display: inline-flex; align-items: baseline; padding: 6px 0;
  font-size: 1.05rem; font-weight: 600; text-decoration: none;
  border-bottom: 1.5px solid transparent;
}
.hero__menu a:hover { border-bottom-color: var(--ink); }

/* ---------------------------------------------------------------- 사진과 소개 */
.about {
  display: grid; grid-template-columns: minmax(220px, 0.8fr) 1.2fr;
  gap: clamp(28px, 6vw, 96px); align-items: center; min-height: calc(100svh - 2 * var(--pad-y));
}
.about__photo { margin: 0; max-width: 420px; }
.about__photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; background: var(--cell); }
.about__name { font-size: clamp(2.4rem, 5vw, 4.4rem); margin-bottom: 1.4rem; }
.about__lead { font-size: 1.12rem; color: var(--ink); font-weight: 500; }
.about__text p { max-width: 34em; }
.timeline { list-style: none; margin: 1.6rem 0 0; padding: 0; border-top: 1px solid var(--ink); }
.timeline li {
  display: grid; grid-template-columns: 9.5em 12em 1fr; gap: 12px; align-items: baseline;
  padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 0.9rem; line-height: 1.5;
}
.timeline__period { font-variant-numeric: tabular-nums; color: var(--muted); font-size: 0.82rem; }
.timeline__title { font-weight: 700; }
.timeline__detail { color: var(--muted); font-size: 0.84rem; }
.about__interest { margin: 1.2rem 0 0.6rem; font-size: 0.95rem; }
.about__interest strong { margin-right: 0.8em; }
.link-row { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 0.9rem; font-weight: 600; }
.link-row a { text-decoration: none; border-bottom: 1px solid var(--ink); }
.doc-list { list-style: none; padding: 0; margin: 0 0 2rem; display: grid; grid-template-columns: repeat(3, 1fr); column-gap: 40px; border-top: 1px solid var(--ink); }
.doc {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding: 18px 0; border-bottom: 1px solid var(--line);
  font-size: clamp(1.2rem, 2vw, 1.5rem); font-weight: 700; letter-spacing: -0.03em; text-decoration: none;
}
a.doc:hover .doc__meta { color: var(--ink); text-decoration: underline; }
.doc__meta { font-size: 0.78rem; font-weight: 500; color: var(--muted); letter-spacing: 0; white-space: nowrap; }
.doc--pending { color: var(--faint); }
.past-works { margin: 0 0 2.4rem; }
.past-works__label { font-size: 0.82rem; font-weight: 600; color: var(--muted); margin-bottom: 0.6rem; }
.past-works ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); column-gap: 24px; border-top: 1px solid var(--line); }
.past-works a, .past-works__item { display: flex; flex-direction: column; padding: 12px 0; border-bottom: 1px solid var(--line); text-decoration: none; line-height: 1.45; }
.past-works a:hover .past-works__link { text-decoration: underline; }
.past-works__name { font-weight: 700; font-size: 0.98rem; }
.past-works__meta { font-size: 0.74rem; color: var(--faint); }
.past-works__summary { font-size: 0.82rem; color: var(--muted); }
.past-works__link { margin-top: 4px; font-size: 0.78rem; font-weight: 600; color: var(--ink); }
.past-works__link--none { color: var(--faint); font-weight: 500; }
.facts { margin: 2rem 0 0; border-top: 1px solid var(--line); }
.facts div {
  display: grid; grid-template-columns: 8em 1fr; gap: 16px;
  padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 0.95rem;
}
.facts dt { font-weight: 600; }
.facts dd { margin: 0; }

/* ---------------------------------------------------------------- 이야기 */
.story-open {
  max-width: 1100px; min-height: calc(100svh - 2 * var(--pad-y));
  display: flex; flex-direction: column; justify-content: center;
}
.story-open__first {
  font-size: clamp(2rem, 5vw, 4.4rem); font-weight: 800;
  line-height: 1.15; letter-spacing: -0.05em; margin: 0; max-width: 15em;
}
.story-open__intro { max-width: 36em; margin-top: 2.4rem; color: var(--ink-2); font-size: 1.08rem; }
.abilities {
  list-style: none; padding: 0; margin: 2.6rem 0 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  border-top: 1px solid var(--ink);
}
.abilities li { display: flex; flex-direction: column; gap: 4px; padding: 16px 20px 0 0; font-size: 0.92rem; }
.abilities strong { font-size: 1.1rem; }
.abilities span:last-child { color: var(--muted); }

.chapter {
  display: grid; grid-template-columns: minmax(200px, 0.75fr) 1.25fr;
  gap: clamp(28px, 6vw, 96px); align-content: center; align-items: center;
  min-height: calc(100svh - 2 * var(--pad-y));
}
.chapter__num { display: block; font-size: clamp(3.6rem, 7vw, 6.4rem); font-weight: 700; letter-spacing: -0.05em; line-height: 1; margin-bottom: 1.4rem; }
.chapter__title { font-size: clamp(1.5rem, 2.6vw, 2.2rem); line-height: 1.25; }
.chapter__head .eyebrow { margin-bottom: 0.6rem; }
.chapter__body { max-width: 38em; font-size: 1.06rem; }
.chapter__body p { margin-bottom: 1.3em; }
.chapter__last {
  margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--ink);
  font-size: clamp(1.25rem, 2vw, 1.6rem); font-weight: 700; line-height: 1.45; letter-spacing: -0.03em;
}

/* ---------------------------------------------------------------- 기록 + 대표작 */
.evidence {
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 5vw, 80px); align-items: start;
}
.evidence__works { border-left: 1px solid var(--line); padding-left: clamp(24px, 4vw, 64px); }
.evidence { min-height: calc(100svh - 2 * var(--pad-y)); align-content: center; align-items: center; }
.card--evidence { --pad-y: clamp(24px, 3.5vh, 44px); }
.card--evidence .eyebrow { margin-bottom: 0.8rem; }
.card--evidence .section-title { font-size: clamp(1.6rem, 2.6vw, 2.3rem); margin-bottom: 1.2rem; }
.card--evidence .records-top { margin-bottom: 1rem; }
.card--evidence .metrics--stack .metric { padding: 7px 0; }
.card--evidence .metrics--stack .metric__value { font-size: 1.45rem; }
.card--evidence .metrics--pair .metric { padding: 10px 16px 10px 0; }
.card--evidence .pairing { margin-bottom: 0.9rem; }
.card--evidence .note { margin: 0; }
.card--evidence .work { padding-bottom: 1rem; }
.card--evidence .work__title { font-size: clamp(1.4rem, 2.2vw, 1.9rem); }
.card--evidence .work p { margin-bottom: 0.7em; }
.card--evidence .verdict { margin: 0.8rem 0 0.4rem; }
.card--evidence .verdict div { padding: 8px 8px 8px 0; }
.card--evidence .roles { margin: 0.6rem 0 0.9rem; }
.card--evidence .roles div { padding: 5px 0; }
.card--evidence .work--placeholder { padding: 14px 20px; }
.card--evidence .work--app { padding-top: 1rem; }
.card--evidence .work--placeholder .work__title { font-size: 1.4rem; }

/* 달력(고정 폭) 옆에 리추얼 숫자를 세로로 붙여 빈 공간을 줄인다 */
.records-top {
  display: grid; grid-template-columns: max-content 1fr; gap: 28px;
  align-items: start; margin-bottom: 1.4rem;
}
.cal { margin: 0; width: max-content; max-width: 100%; }
.cal figcaption { max-width: 290px; }
.metrics.metrics--stack { grid-template-columns: 1fr; margin: 0; }
.metrics--stack .metric { padding: 10px 0; }
.metrics--stack .metric__value { font-size: 1.6rem; }
.metrics.metrics--pair { grid-template-columns: 1fr 1fr; }
.cal__months {
  display: grid; grid-template-columns: 1.6em repeat(var(--weeks), 22px);
  gap: 5px; font-size: 0.7rem; color: var(--muted); margin-bottom: 4px;
}
.cal__months::before { content: ""; }
.cal__grid { display: grid; grid-auto-flow: column; grid-auto-columns: 22px; grid-template-columns: 1.6em; gap: 5px; }
.cal__days, .cal__week { display: grid; grid-template-rows: repeat(7, 22px); gap: 5px; }
.cal__days span { font-size: 0.66rem; line-height: 1; color: var(--muted); display: flex; align-items: center; aspect-ratio: 1 / 1; max-height: 22px; }
.cal__cell {
  display: block; width: 22px; height: 22px; border-radius: 4px;
  background: var(--cell);
}
.cal__cell--on { background: var(--ink); }
.cal__cell--out { background: transparent; }
.cal figcaption { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 10px; font-size: 0.76rem; color: var(--muted); line-height: 1.5; }
.cal__legend { display: inline-flex; align-items: center; gap: 6px; }
.cal__legend .cal__cell { width: 11px; height: 11px; border-radius: 3px; }

.metrics {
  list-style: none; padding: 0; margin: 0 0 1.4rem;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  border-top: 1px solid var(--ink);
}
.metric { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px 14px 0; border-bottom: 1px solid var(--line); }
.metric__label { font-size: 0.82rem; font-weight: 600; }
.metric__value { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.04em; line-height: 1.2; }
.metric--pending .metric__value { font-size: 1rem; font-weight: 600; color: var(--muted); padding: 0.45rem 0; }
.metric__def, .metric__src { font-size: 0.72rem; color: var(--muted); line-height: 1.5; }

.pairing, .approved { border-left: 2px solid var(--ink); padding: 2px 0 2px 16px; margin: 0 0 1.2rem; font-size: 0.95rem; }
.pairing p { margin-bottom: 0.2rem; }
.pairing__label { font-size: 0.76rem; font-weight: 600; color: var(--muted); }
.approved ul { margin: 0; padding: 0; list-style: none; }
.approved li { margin-bottom: 0.5rem; }
.note { font-size: 0.78rem; color: var(--muted); line-height: 1.6; max-width: 40em; }

.work { padding-bottom: 1.6rem; }
.work__kind { font-size: 0.82rem; font-weight: 600; margin-bottom: 0.6rem; }
.work__title { font-size: clamp(1.5rem, 2.5vw, 2.1rem); line-height: 1.25; margin-bottom: 0.4rem; }
.work__subtitle { font-size: 0.9rem; color: var(--muted); }
.work p { font-size: 0.97rem; }
.verdict {
  display: grid; grid-template-columns: repeat(3, 1fr); margin: 1.2rem 0 0.6rem;
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line);
}
.verdict div { display: flex; flex-direction: column; padding: 12px 8px 12px 0; font-size: 0.76rem; color: var(--muted); }
.verdict__num { font-size: 2rem; font-weight: 800; color: var(--ink); letter-spacing: -0.04em; line-height: 1.2; }
.verdict__num small { font-size: 0.9rem; font-weight: 600; margin-left: 2px; }
.verdict__num--word { font-size: 1.6rem; padding-top: 0.2rem; }
.roles { margin: 1rem 0 1.2rem; font-size: 0.86rem; }
.roles div { display: grid; grid-template-columns: 7.5em 1fr; gap: 12px; padding: 7px 0; border-bottom: 1px solid var(--line); }
.roles dt { font-weight: 700; }
.roles dd { margin: 0; color: var(--ink-2); line-height: 1.6; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px; }
.btn {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 20px;
  background: var(--ink); color: #fff; border: 1.5px solid var(--ink); border-radius: 999px;
  font-weight: 600; font-size: 0.92rem; text-decoration: none;
}
.btn--ghost { background: transparent; color: var(--ink); }
.btn:hover { opacity: 0.86; }
/* 두 번째 대표작: 논문 아래에 선으로 나누고 사용 흐름을 세 줄로 */
.work--app { margin-top: 0.4rem; padding-top: 1.4rem; border-top: 1px solid var(--line); }
.flow { list-style: none; margin: 0.6rem 0 0.9rem; padding: 0; border-top: 1px solid var(--line); }
.flow li { display: grid; grid-template-columns: 3.2em 1fr; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 0.9rem; line-height: 1.5; color: var(--ink-2); }
.flow__step { font-weight: 700; color: var(--ink); }
.work--placeholder {
  margin-top: 0.4rem; padding: 22px 24px; border: 1.5px dashed var(--faint); border-radius: 16px;
}
.work--placeholder .work__title { color: var(--faint); }
.work--placeholder p:last-child { margin: 0; }

/* ---------------------------------------------------------------- 문서와 연락 */
.docs { display: flex; flex-direction: column; min-height: calc(100svh - 2 * var(--pad-y)); justify-content: center; }
/* 위쪽 여백과 푸터 앞 여백을 똑같이 나눠 내용을 세로 가운데에 둔다 */
.docs > .eyebrow { margin-top: auto; }
.contact { display: flex; flex-wrap: wrap; gap: 8px 32px; align-items: baseline; }
.contact__label { font-weight: 700; }
.contact__value { font-size: 1.15rem; }
.contact__value--pending { color: var(--muted); font-size: 0.95rem; }
.site-footer {
  display: flex; justify-content: space-between; margin-top: auto; padding-top: 10vh;
  font-size: 0.78rem; color: var(--muted);
}
.site-footer a { text-decoration: none; }

/* ---------------------------------------------------------------- 좁은 화면: 읽기 좋은 세로 문서 */
@media (max-width: 899px) {
  body { font-size: 16px; }
  .about, .chapter, .evidence { grid-template-columns: 1fr; min-height: 0; }
  .about__photo { max-width: 300px; }
  .story-open, .docs { min-height: 0; }
  .chapter { padding-top: 0; gap: 20px; }
  .chapter__num { font-size: 3.2rem; margin-bottom: 0.8rem; }
  .abilities { grid-template-columns: 1fr; }
  .abilities li { padding: 14px 0; border-bottom: 1px solid var(--line); }
  /* 3열이면 칸이 좁아 문서 이름이 한 글자씩 세로로 쪼개지므로 한 줄에 하나씩 */
  .doc-list { grid-template-columns: 1fr; }
  .evidence__works { border-left: 0; padding-left: 0; border-top: 1px solid var(--ink); padding-top: 2rem; }
  /* 한 화면에 맞추려고 줄인 기록·대표작 카드 간격을 세로로 읽는 화면에서는 다시 넓힌다 */
  .card--evidence { --pad-y: 48px; }
  .card--evidence .eyebrow { margin-bottom: 1rem; }
  .card--evidence .section-title { margin-bottom: 2rem; }
  .card--evidence .records-top { gap: 32px; margin-bottom: 2rem; }
  .card--evidence .metrics--stack .metric { padding: 14px 0; }
  .card--evidence .metrics--pair { margin-bottom: 2rem; }
  .card--evidence .metrics--pair .metric { padding: 16px 16px 16px 0; }
  .card--evidence .metric { gap: 4px; }
  .card--evidence .pairing { margin-bottom: 1.6rem; padding: 4px 0 4px 16px; }
  .card--evidence .pairing__label { margin-bottom: 0.4rem; }
  .card--evidence .note { margin-bottom: 2.4rem; }
  .card--evidence .work { padding-bottom: 2.4rem; }
  .card--evidence .work__kind { margin-bottom: 0.8rem; }
  .card--evidence .work__title { margin-bottom: 0.6rem; }
  .card--evidence .work__subtitle { margin-bottom: 1.4rem; }
  .card--evidence .work p { margin-bottom: 1.1em; }
  .card--evidence .verdict { margin: 1.4rem 0 1rem; }
  .card--evidence .verdict div { padding: 14px 8px 14px 0; }
  .card--evidence .roles { margin: 1.2rem 0 1.6rem; }
  .card--evidence .roles div { padding: 10px 0; }
  .card--evidence .work--app { padding-top: 2.4rem; }
  .flow { margin: 1.2rem 0 1.4rem; }
  .flow li { padding: 11px 0; }
  .site-footer { padding-top: 3rem; }
  .card { padding-top: 48px; padding-bottom: 48px; }
  .card--hero { padding-top: 20px; }
  .hero { padding-top: 10vh; }
}
@media (max-width: 1100px) {
  .records-top { grid-template-columns: 1fr; }
  .past-works ul { grid-template-columns: repeat(2, 1fr); }
  .timeline li { grid-template-columns: 8.5em 1fr; }
  .timeline__detail { grid-column: 2; }
}
@media (max-width: 520px) {
  .metrics.metrics--pair { grid-template-columns: 1fr; }
  .past-works ul { grid-template-columns: 1fr; }
  .timeline li { grid-template-columns: 1fr; gap: 0; }
  .timeline__detail { grid-column: auto; }
  .meta-bar { grid-template-columns: 1fr 1fr; }
  .meta-bar span:nth-child(2) { display: none; }
  .facts div, .roles div { grid-template-columns: 1fr; gap: 2px; }
  .verdict__num { font-size: 1.6rem; }
  .verdict__num--word { font-size: 1.25rem; }
}