:root {
  --bg: #f4f5f7;
  --bg-strong: #eceef1;
  --paper: #ffffff;
  --paper-soft: #f8f9fb;
  --line: #d6dbe1;
  --line-strong: #111111;
  --ink: #111111;
  --ink-soft: #4f5763;
  --ink-muted: #6d7682;
  --accent: #111111;
  --accent-soft: #eef1f5;
  --shadow: 0 18px 40px rgba(17, 17, 17, 0.05);
  --radius-xl: 14px;
  --radius-lg: 12px;
  --radius-md: 10px;
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans KR", "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.92)),
    linear-gradient(90deg, transparent 0, transparent calc(100% - 1px), rgba(17, 17, 17, 0.035) calc(100% - 1px)),
    linear-gradient(0deg, transparent 0, transparent calc(100% - 1px), rgba(17, 17, 17, 0.035) calc(100% - 1px));
  background-size: auto, 24px 24px, 24px 24px;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid #111111;
  outline-offset: 3px;
}

code {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  padding: 0.1rem 0.35rem;
  border-radius: 6px;
  background: #eef2f6;
}

.page-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  background: rgba(244, 245, 247, 0.94);
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-weight: 600;
}

.brand-text {
  color: var(--ink);
  font-size: 0.98rem;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.15rem;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.nav a {
  position: relative;
  color: var(--ink-muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.nav a.is-active {
  color: var(--ink);
}

.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.5rem;
  height: 2px;
  background: var(--line-strong);
}

main,
.footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.85fr);
  gap: 1rem;
  align-items: stretch;
  padding: 2.4rem 0 1.55rem;
}

.hero-copy,
.hero-aside,
.timeline-card,
.project-card,
.case-card,
.workflow-card,
.principles-panel,
.contact-card,
.pillar-card {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-copy {
  width: 100%;
  height: 100%;
  padding: 2.2rem 2.2rem 1.65rem;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
}

.profile-block {
  display: flex;
  gap: 1.15rem;
  align-items: flex-start;
  margin-bottom: 1.1rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line);
}

.profile-photo {
  flex: none;
  width: 112px;
  height: 112px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 22%;
  border: 1px solid var(--line);
  background: #e8ebef;
}

.profile-summary {
  display: grid;
  gap: 0.8rem;
  min-width: 0;
}

.profile-name {
  margin: 0;
  font-size: 1.42rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.profile-links {
  display: grid;
  gap: 0.5rem;
  justify-items: flex-start;
}

.profile-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: #c6ccd4;
  text-underline-offset: 0.2em;
  transition: color 180ms ease, text-decoration-color 180ms ease;
}

.profile-link:hover {
  color: var(--ink);
  text-decoration-color: #8f98a3;
}

.profile-link svg {
  flex: none;
  width: 1rem;
  height: 1rem;
}

.profile-link span {
  min-width: 0;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.eyebrow {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.hero h1,
.section-heading h2 {
  margin: 0;
  font-family: "IBM Plex Sans KR", "Noto Sans KR", sans-serif;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.hero h1 {
  max-width: none;
  font-size: clamp(2.1rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.06;
}

.inline-link {
  text-decoration: underline;
  text-decoration-color: #c6ccd4;
  text-underline-offset: 0.2em;
}

.hero-body {
  max-width: 72ch;
  margin: 1.05rem 0 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.78;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.7rem 1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: #111111;
  color: #ffffff;
}

.button-secondary {
  border-color: #d2d8df;
  background: #ffffff;
  color: var(--ink);
}

.hero-aside {
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: 1rem;
  padding: 1.45rem;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
}

.hero-aside-kicker {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.hero-stack-groups {
  display: grid;
  grid-template-rows: repeat(4, minmax(0, 1fr));
  gap: 0;
  min-height: 0;
  flex: 1;
}

.hero-stack-group {
  display: grid;
  align-content: start;
  gap: 0.55rem;
}

.hero-stack-group + .hero-stack-group {
  padding-top: 0.95rem;
  border-top: 1px solid var(--line);
}

.hero-stack-group h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-stack-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-stack-list span {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.62rem;
  border: 1px solid #d4dae1;
  border-radius: 999px;
  background: #ffffff;
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.35;
}

.project-summary,
.timeline-summary,
.case-card p,
.workflow-card p,
.contact-card p,
.pillar-card p {
  margin: 0;
  color: inherit;
  opacity: 0.86;
  line-height: 1.75;
}

.section {
  padding: 1.2rem 0 0;
}

.section + .section {
  margin-top: 3rem;
}

.section-heading {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 1.4rem;
}

.section-heading h2 {
  font-size: clamp(1.8rem, 3.6vw, 2.7rem);
  font-weight: 700;
}

.pillar-grid,
.project-grid,
.case-grid,
.workflow-grid,
.contact-grid {
  display: grid;
  gap: 1rem;
}

.pillar-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.pillar-card {
  padding: 1.35rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
}

.pillar-card h3,
.project-card h3,
.case-card h3,
.workflow-card h3,
.contact-card h3,
.timeline-card h3 {
  margin: 0 0 0.7rem;
  font-size: 1.16rem;
}

.timeline-card {
  padding: 1.65rem;
  border-radius: var(--radius-lg);
}

.timeline-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.timeline-role,
.timeline-period,
.project-meta,
.link-disabled {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.timeline-role {
  margin: 0.45rem 0 0;
  line-height: 1.75;
}

.timeline-stack {
  margin: 0.9rem 0 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.75;
}

.timeline-stack strong {
  color: var(--ink);
  font-weight: 600;
}

.bullet-list {
  display: grid;
  gap: 0.72rem;
  padding-left: 1.2rem;
  margin: 1rem 0 0;
  line-height: 1.75;
  color: var(--ink-soft);
}

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

.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  padding: 1.55rem;
  border-radius: var(--radius-lg);
  background: #ffffff;
}

.project-card.featured {
  background: #ffffff;
  border-color: #bfc6d0;
}

.project-topline {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
  margin-bottom: 0;
}

.project-badge {
  display: inline;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ink-muted);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.project-badge.subtle {
  background: transparent;
  color: var(--ink-muted);
}

.project-meta {
  display: block;
  margin: 0;
}

.project-card h3 {
  margin: 0;
}

.project-title-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: #c6ccd4;
  text-underline-offset: 0.16em;
}

.project-title-link::after {
  content: "↗";
  margin-left: 0.32rem;
  color: var(--ink-muted);
  font-size: 0.88em;
}

.project-title-link:hover {
  text-decoration-color: #8f98a3;
}

.project-summary {
  margin: 0;
  flex: 1 1 auto;
}

.stack-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.stack-list li {
  padding: 0.46rem 0.72rem;
  border-radius: 999px;
  background: #f3f5f8;
  border: 1px solid #d8dde4;
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 600;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: auto;
}

.result-grid article {
  display: grid;
  gap: 0.18rem;
  padding: 0.9rem;
  border-radius: var(--radius-md);
  background: #f8f9fb;
  border: 1px solid #dde2e8;
}

.result-grid article:last-child {
  grid-column: 1 / -1;
}

.result-grid strong {
  color: var(--ink);
  font-size: 0.98rem;
  line-height: 1.3;
}

.result-grid span {
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.45;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
}

.link-row a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: #c6ccd4;
  text-underline-offset: 0.2em;
}

.filter-stack {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.filter-button {
  padding: 0.62rem 0.95rem;
  border-radius: 999px;
  border: 1px solid #d2d8df;
  background: #ffffff;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.filter-button:hover {
  transform: translateY(-1px);
}

.filter-button.is-active {
  background: #111111;
  border-color: #111111;
  color: #ffffff;
}

.case-subsection {
  display: grid;
  gap: 1rem;
  margin-top: 1.4rem;
}

.case-subsection.is-hidden {
  display: none;
}

.case-subsection-head {
  display: grid;
  gap: 0.35rem;
}

.case-subsection-head h3 {
  margin: 0;
  font-size: 1.2rem;
}

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

.case-card {
  display: grid;
  gap: 0.68rem;
  padding: 1.35rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
}

.case-card.is-hidden {
  display: none;
}

.case-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.case-chip-row span {
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: #eef1f5;
  color: #20262d;
  font-size: 0.82rem;
  font-weight: 600;
}

.case-stats {
  display: grid;
  gap: 0.42rem;
  margin: 0;
}

.case-stats div {
  display: grid;
  gap: 0.1rem;
}

.case-stats dt {
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.case-stats dd {
  margin: 0;
  font-weight: 700;
  line-height: 1.45;
}

.case-card a {
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: #c6ccd4;
  text-underline-offset: 0.2em;
}

.case-card p {
  margin: 0;
  line-height: 1.58;
}

.case-archive {
  margin-top: 1rem;
  padding: 1.35rem 1.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.case-archive h3 {
  margin: 0 0 0.85rem;
  font-size: 1.08rem;
}

.archive-note {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.6;
}

.archive-links {
  display: grid;
  gap: 0.55rem;
}

.archive-links a {
  color: var(--ink-soft);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: #c6ccd4;
  text-underline-offset: 0.2em;
}

.archive-link.is-hidden,
.case-archive.is-hidden {
  display: none;
}

.case-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.2rem 1.25rem 4rem;
}

.case-shell {
  display: grid;
  gap: 1rem;
}

.case-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  width: fit-content;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: #c6ccd4;
  text-underline-offset: 0.2em;
}

.case-header,
.case-meta-card,
.case-section-card,
.case-related-card,
.empty-state {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.case-header {
  display: grid;
  gap: 0.9rem;
  padding: 1.65rem;
  background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
}

.case-header h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.case-summary {
  max-width: 78ch;
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.78;
}

.case-meta-grid,
.case-related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.case-meta-card {
  padding: 1rem;
}

.case-meta-card dl {
  margin: 0;
}

.case-meta-card dt {
  margin: 0 0 0.25rem;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.case-meta-card dd {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.45;
}

.case-section-grid {
  display: grid;
  gap: 1rem;
}

.case-section-card {
  padding: 1.35rem;
}

.case-section-card h2 {
  margin: 0 0 0.8rem;
  font-size: 1.16rem;
  letter-spacing: -0.02em;
}

.case-section-card p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.78;
}

.case-section-card p + p {
  margin-top: 0.85rem;
}

.case-bullets {
  display: grid;
  gap: 0.68rem;
  padding-left: 1.2rem;
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.72;
}

.case-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.case-related {
  display: grid;
  gap: 0.9rem;
}

.case-related h2 {
  margin: 0;
  font-size: 1.16rem;
}

.case-related-card {
  display: grid;
  gap: 0.7rem;
  padding: 1.2rem;
}

.case-related-card h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.45;
}

.case-related-card p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.68;
}

.case-related-card a {
  width: fit-content;
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: #c6ccd4;
  text-underline-offset: 0.2em;
}

.empty-state {
  padding: 1.4rem;
}

.empty-state h1 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
}

.empty-state p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.7;
}

.workflow-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.workflow-card,
.principles-panel,
.contact-card {
  padding: 1.4rem;
  border-radius: var(--radius-lg);
}

.workflow-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  margin-bottom: 0.8rem;
  border-radius: 8px;
  border: 1px solid #cfd5dc;
  background: #f2f5f8;
  color: var(--ink);
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
}

.principles-panel {
  margin-top: 1rem;
}

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

.footer {
  padding-top: 2rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
  border-top: 1px solid rgba(17, 17, 17, 0.08);
}

.reveal {
  opacity: 1;
  transform: translateY(0);
}

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero,
  .project-grid,
  .case-meta-grid,
  .case-related-grid,
  .workflow-grid,
  .pillar-grid,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-copy,
  .hero-aside {
    grid-column: 1 / -1;
  }

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

  .hero-stack-groups {
    grid-template-rows: none;
    gap: 0.95rem;
  }
}

@media (max-width: 760px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .nav {
    justify-content: center;
  }

  .hero,
  .project-grid,
  .case-grid,
  .case-meta-grid,
  .case-related-grid,
  .workflow-grid,
  .pillar-grid,
  .contact-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 1.8rem;
  }

  .profile-block {
    flex-direction: column;
    gap: 1rem;
  }

  .profile-photo {
    width: 88px;
    height: 88px;
  }

  .profile-links {
    width: 100%;
  }

  .profile-link {
    width: auto;
  }

  .hero-copy,
  .hero-aside,
  .timeline-card,
  .project-card,
  .case-card,
  .workflow-card,
  .principles-panel,
  .contact-card,
  .pillar-card {
    padding: 1.2rem;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.4rem, 12vw, 3.6rem);
  }

  .timeline-head,
  .project-topline {
    flex-direction: column;
    align-items: flex-start;
  }

  main,
  .case-main,
  .footer {
    padding-left: 0.95rem;
    padding-right: 0.95rem;
  }
}

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

  .js .reveal,
  .js .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .button,
  .filter-button {
    transition: none;
  }
}