:root {
  color-scheme: light;
  --paper: #ffffff;
  --ink: #171817;
  --muted: #686a67;
  --faint: #737670;
  --line: #e6e7e3;
  --panel: #f4f5f1;
  --accent: #315c4e;
  --max-width: 1120px;
  --side: clamp(20px, 4vw, 64px);
  --sans: Inter, Pretendard, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  --serif: Iowan Old Style, "Noto Serif KR", Batang, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration-color: #a8aaa6;
  text-underline-offset: 4px;
}

a:hover {
  text-decoration-color: var(--ink);
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 8px 12px;
  transform: translateY(-200%);
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus {
  transform: translateY(0);
}

.section-shell,
.site-header {
  width: min(calc(100% - (var(--side) * 2)), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 88px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wordmark {
  justify-self: start;
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 26px;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
}

.draft-badge {
  justify-self: end;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 9px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 790px) minmax(180px, 240px);
  column-gap: clamp(54px, 9vw, 128px);
  align-items: center;
  min-height: clamp(440px, 60vh, 620px);
  padding-block: 72px 96px;
}

.hero-copy {
  grid-column: 1;
  grid-row: 1;
  max-width: 790px;
}

.hero-portrait {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  width: 100%;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  aspect-ratio: 1;
}

.hero-portrait img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-index {
  margin: 0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.hero h1 {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin: 0 0 6px;
  font-size: clamp(38px, 5.5vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.name-en {
  color: var(--faint);
  font-size: 0.27em;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.hero-academic {
  margin: 22px 0 0;
}

.hero-academic-school {
  margin: 0;
  font-size: 17px;
  font-weight: 650;
}

.hero-academic-program {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 30px;
  font-size: 14px;
}

.hero-links a::after,
.card-link::after {
  content: " ↗";
  color: var(--faint);
  font-size: 0.8em;
}

.work-section,
.resume-section,
.recognition-section,
.archive-section,
.activities-section,
.about-section {
  padding-block: 42px 132px;
  scroll-margin-top: 28px;
}

.section-heading {
  margin-bottom: 36px;
}

.heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.section-heading h2 {
  margin: 3px 0 0;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.section-note {
  margin: 0;
  color: var(--faint);
  font-size: 13px;
}

.project-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.project-controls button {
  display: grid;
  width: 34px;
  height: 34px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 16px;
  transition: border-color 160ms ease, color 160ms ease, opacity 160ms ease;
}

.project-controls button:hover:not(:disabled),
.project-controls button:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.project-controls button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 30%, transparent);
  outline-offset: 2px;
}

.project-controls button:disabled {
  opacity: 0.3;
  cursor: default;
}

.project-rail-shell {
  overflow: hidden;
}

.project-rail {
  --project-card-width: clamp(330px, 31vw, 520px);
  display: grid;
  grid-auto-columns: var(--project-card-width);
  grid-auto-flow: column;
  gap: 14px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  padding-right: max(0px, calc(100% - var(--project-card-width)));
  padding-bottom: 22px;
  scrollbar-color: #c7c9c4 transparent;
  scrollbar-gutter: stable;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
}

.project-rail:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.project-card {
  min-width: 0;
  scroll-snap-align: start;
}

.project-visual {
  position: relative;
  display: flex;
  aspect-ratio: 4 / 3;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--panel);
}

.project-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.project-visual img.image-contain {
  object-fit: contain;
  background: #ffffff;
}

.project-card:hover .project-visual img {
  transform: scale(1.015);
}

.project-monogram {
  color: #b5b8b1;
  font-family: var(--serif);
  font-size: clamp(42px, 7vw, 92px);
  font-style: italic;
  letter-spacing: -0.05em;
}

.project-body {
  padding-top: 16px;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  text-transform: uppercase;
}

.project-meta span {
  border: 1px solid var(--line);
  padding: 2px 6px;
}

.project-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.project-summary {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.project-links {
  display: flex;
  gap: 14px;
  margin-top: 12px;
  font-size: 12px;
}

.timeline {
  margin-left: clamp(0px, 19vw, 230px);
}

.timeline-item {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 40px;
  padding-block: 28px;
  border-bottom: 1px solid var(--line);
}

.timeline-item:first-child {
  padding-top: 0;
}

.timeline-period {
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.timeline-title,
.recognition-card h3,
.archive-card h3,
.education-item h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.45;
  letter-spacing: -0.02em;
}

.timeline-role {
  margin: 3px 0 11px;
  color: var(--accent);
  font-size: 13px;
}

.timeline-description,
.recognition-card p,
.archive-card p,
.education-item p,
.about-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.timeline-points {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 14px;
}

.recognition-grid,
.archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  column-gap: 44px;
  row-gap: 50px;
  margin-left: clamp(0px, 19vw, 230px);
}

.activities-section .archive-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.recognition-card,
.archive-card {
  min-width: 0;
}

.card-kicker {
  margin: 0 0 10px;
  color: var(--faint);
  font-size: 11px;
}

.recognition-card p,
.archive-card p {
  margin-top: 7px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-top: 13px;
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
}

.archive-card {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.archive-visual {
  overflow: hidden;
  margin-bottom: 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  aspect-ratio: 16 / 10;
}

.archive-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.archive-visual img.image-contain {
  object-fit: contain;
  background: #ffffff;
}

.about-grid {
  margin-left: clamp(0px, 19vw, 230px);
}

.education-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px 56px;
}

.education-item p {
  margin-top: 4px;
}

.empty-state {
  grid-column: 1 / -1;
  margin: 0;
  padding: 40px 0;
  color: var(--faint);
  font-size: 14px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-block: 28px 44px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 11px;
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: 1fr auto;
    row-gap: 12px;
    min-height: 72px;
    padding-block: 18px;
  }

  .site-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100%;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: none;
    white-space: nowrap;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .draft-badge {
    grid-column: 2;
    grid-row: 1;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 100px 120px;
  }

  .hero-portrait {
    grid-column: 1;
    grid-row: 2;
    width: 144px;
    margin-block: 32px 0;
  }

  .hero-copy {
    grid-column: 1;
    grid-row: 1;
  }

  .hero h1 {
    display: grid;
    gap: 8px;
  }

  .name-en {
    font-size: 0.32em;
  }

  .heading-row {
    align-items: start;
  }

  .section-note {
    max-width: 140px;
    text-align: right;
  }

  .project-rail {
    --project-card-width: max(285px, 82vw);
  }

  .timeline,
  .recognition-grid,
  .archive-grid,
  .about-grid {
    margin-left: 0;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .recognition-grid,
  .archive-grid {
    grid-template-columns: repeat(2, 1fr);
  }

}

@media (max-width: 520px) {
  body {
    font-size: 15px;
  }

  .hero {
    padding-block: 86px 104px;
  }

  .site-nav {
    gap: 16px;
    font-size: 11px;
  }

  .work-section,
  .resume-section,
  .recognition-section,
  .archive-section,
  .activities-section,
  .about-section {
    padding-block: 30px 96px;
  }

  .heading-row {
    display: block;
  }

  .project-controls {
    margin-top: 16px;
  }

  .section-note {
    max-width: none;
    margin-top: 8px;
    text-align: left;
  }

  .recognition-grid,
  .archive-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .activities-section .archive-grid,
  .education-list {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: grid;
  }
}

@media print {
  @page {
    size: A4;
    margin: 12mm;
  }

  :root {
    --max-width: none;
    --side: 0px;
  }

  html {
    scroll-behavior: auto;
  }

  body {
    font-size: 10pt;
    line-height: 1.45;
  }

  .skip-link,
  .site-header,
  .project-controls,
  .draft-badge {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding-block: 0 12mm;
  }

  .hero h1 {
    font-size: 30pt;
  }

  .hero-lead {
    font-size: 17pt;
  }

  .work-section,
  .resume-section,
  .recognition-section,
  .archive-section,
  .activities-section,
  .about-section {
    padding-block: 5mm 10mm;
  }

  .section-heading {
    margin-bottom: 5mm;
  }

  .project-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-columns: auto;
    grid-auto-flow: row;
    gap: 6mm;
    overflow: visible;
    padding: 0;
    scrollbar-gutter: auto;
  }

  .project-visual {
    aspect-ratio: 16 / 9;
  }

  .timeline,
  .recognition-grid,
  .archive-grid,
  .about-grid {
    margin-left: 0;
  }

  .recognition-grid,
  .archive-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6mm;
  }

  .timeline-item,
  .project-card,
  .recognition-card,
  .archive-card,
  .education-item {
    break-inside: avoid;
  }

  .site-footer {
    padding-block: 5mm 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}