:root {
  --paper: #f2efe6;
  --ink: #171714;
  --muted: #777268;
  --line: rgba(23, 23, 20, 0.2);
  --coral: #ff4d36;
  --acid: #d8ff3e;
  --blue: #234ae8;
  --display: "Gowun Batang", serif;
  --sans: "IBM Plex Sans KR", sans-serif;
  --mono: "DM Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.55;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  content: "";
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.75'/%3E%3C/svg%3E");
}

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

img {
  display: block;
  max-width: 100%;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.8rem;
  left: 0.8rem;
  padding: 0.8rem 1rem;
  background: var(--ink);
  color: white;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 1.3rem 2rem;
  border-bottom: 1px solid transparent;
  transition: background-color 240ms ease, border-color 240ms ease, padding 240ms ease;
}

.site-header.is-scrolled {
  padding-block: 0.85rem;
  border-color: var(--line);
  background: rgba(242, 239, 230, 0.92);
  backdrop-filter: blur(12px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.wordmark-mark {
  width: 0.8rem;
  height: 0.8rem;
  background: var(--coral);
  border-radius: 50%;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.wordmark:hover .wordmark-mark {
  transform: scale(1.65);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.main-nav a {
  position: relative;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.3rem;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 200ms ease;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.main-nav sup {
  color: var(--coral);
}

.hero {
  position: relative;
  display: grid;
  width: min(100%, 86rem);
  min-height: 82svh;
  margin-inline: auto;
  align-content: space-between;
  padding: 7rem 2rem 2rem;
  isolation: isolate;
}

.hero-kicker,
.hero-foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-title {
  position: relative;
  z-index: 2;
  margin: 2rem 0;
  font-family: var(--sans);
  font-size: clamp(3.2rem, 6.4vw, 6.6rem);
  font-weight: 300;
  line-height: 0.94;
  letter-spacing: -0.075em;
}

.title-line {
  display: block;
}

.title-line-indent {
  padding-left: 8vw;
}

.title-line-serif {
  padding-left: 27vw;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.06em;
}

.hero-foot p {
  margin: 0;
  text-transform: none;
  letter-spacing: 0;
  line-height: 1.75;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--ink);
}

.text-link span {
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translateY(0.25rem);
}

.hero-orbit {
  position: absolute;
  z-index: -1;
  top: 16%;
  right: 7%;
  width: clamp(11rem, 20vw, 20rem);
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
  animation: slow-spin 22s linear infinite;
}

.hero-orbit::before,
.hero-orbit::after {
  position: absolute;
  content: "";
  border: 1px solid var(--line);
  border-radius: 50%;
}

.hero-orbit::before {
  inset: 16%;
}

.hero-orbit::after {
  inset: 42%;
  background: var(--acid);
  border: 0;
}

.orbit-dot {
  position: absolute;
  top: 46%;
  left: -0.45rem;
  width: 0.9rem;
  height: 0.9rem;
  background: var(--coral);
  border-radius: 50%;
}

.orbit-label {
  position: absolute;
  padding: 0.15rem 0.35rem;
  background: var(--paper);
  font-family: var(--mono);
  font-size: 0.58rem;
}

.orbit-label-a { top: 6%; left: 18%; }
.orbit-label-b { right: -3%; bottom: 28%; }
.orbit-label-c { bottom: 4%; left: 14%; }

@keyframes slow-spin {
  to { transform: rotate(360deg); }
}

.ticker {
  overflow: hidden;
  border-block: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.ticker-track {
  display: flex;
  width: max-content;
  align-items: center;
  gap: 1.5rem;
  padding: 0.7rem 0;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  animation: ticker-move 24s linear infinite;
}

.ticker-track i {
  color: var(--acid);
  font-size: 0.55rem;
}

@keyframes ticker-move {
  to { transform: translateX(-50%); }
}

.work-section,
.approach-section {
  padding: clamp(4rem, 6vw, 6rem) 2rem;
}

.work-section {
  width: min(100%, 86rem);
  margin-inline: auto;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 2.2fr 1fr;
  gap: 2rem;
  align-items: end;
  margin-bottom: clamp(3rem, 5vw, 5rem);
}

.eyebrow {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.section-heading h2,
.approach-lead h2 {
  margin: 0;
  font-size: clamp(2.7rem, 4.8vw, 5rem);
  font-weight: 300;
  line-height: 0.98;
  letter-spacing: -0.07em;
}

.section-heading h2 em,
.approach-lead h2 em {
  font-family: var(--display);
  font-weight: 700;
}

.section-intro {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(3rem, 5vw, 4.8rem) 1rem;
}

.project-card,
.project-card-wide {
  grid-column: span 4;
}

.project-visual {
  --mouse-x: 50%;
  --mouse-y: 50%;
  position: relative;
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #ded9cc;
  border: 1px solid var(--ink);
  isolation: isolate;
}

.project-visual::after {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  content: "";
  opacity: 0;
  background: radial-gradient(circle at var(--mouse-x) var(--mouse-y), rgba(255, 255, 255, 0.22), transparent 28%);
  transition: opacity 240ms ease;
}

a.project-visual:hover::after {
  opacity: 1;
}

.project-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(0.16, 1, 0.3, 1), filter 400ms ease;
}

a.project-visual:hover img {
  transform: scale(1.025);
}

.project-visual-contain img {
  object-fit: contain;
  padding: 5%;
}

.project-visual-icon img {
  width: min(56%, 13rem);
  height: auto;
  max-height: 78%;
  margin: auto;
  border-radius: 22%;
  object-fit: contain;
  box-shadow: 0 0.9rem 2rem rgba(0, 0, 0, 0.18);
}

.project-visual-icon {
  display: grid;
  place-items: center;
}

[data-project="whathow"] .project-visual { background: #f7f1e6; }
[data-project="rightpose"] .project-visual { background: #141517; }
[data-project="kiosk"] .project-visual { background: #f8eedc; }
[data-project="philo"] .project-visual { background: #dfd8cd; }
[data-project="alarm"] .project-visual { background: #ffc51d; }
[data-project="netflix"] .project-visual { background: #0c0c0e; }
[data-project="yoga"] .project-visual { background: #99dbff; }
[data-project="hanasik"] .project-visual { background: #ff6756; }

.project-index,
.open-mark {
  position: absolute;
  z-index: 4;
  display: grid;
  place-items: center;
  background: var(--paper);
  border: 1px solid var(--ink);
  font-family: var(--mono);
}

.project-index {
  top: -1px;
  left: -1px;
  min-width: 2.5rem;
  height: 1.9rem;
  font-size: 0.6rem;
}

.open-mark {
  right: 0.7rem;
  bottom: 0.7rem;
  width: 2.5rem;
  height: 2.5rem;
  font-size: 0.95rem;
  border-radius: 50%;
  transition: transform 220ms ease, background-color 220ms ease;
}

a.project-visual:hover .open-mark {
  background: var(--acid);
  transform: rotate(45deg);
}

.project-copy {
  padding-top: 0.9rem;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.project-copy h3 {
  margin: 0.75rem 0 0.4rem;
  font-family: var(--display);
  font-size: clamp(1.65rem, 2.4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.045em;
}

.project-copy > p {
  max-width: 43rem;
  margin: 0;
  color: #4f4c45;
  font-size: 0.82rem;
  line-height: 1.7;
}

.project-links {
  display: flex;
  gap: 1.4rem;
  margin-top: 0.85rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  text-transform: uppercase;
}

.project-links a {
  padding-bottom: 0.15rem;
  border-bottom: 1px solid currentColor;
}

.project-links a:hover {
  color: var(--blue);
}

.project-status {
  color: var(--muted);
}

.approach-section {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(3rem, 7vw, 7rem);
  background: var(--ink);
  color: var(--paper);
}

.approach-lead .eyebrow {
  margin-bottom: 2rem;
  color: var(--acid);
}

.approach-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.approach-list li {
  display: grid;
  grid-template-columns: 4rem 1fr 1.4fr;
  gap: 1rem;
  align-items: start;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(242, 239, 230, 0.25);
}

.approach-number {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.65rem;
}

.approach-list h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.6rem;
  line-height: 1;
}

.approach-list p {
  margin: 0;
  color: rgba(242, 239, 230, 0.65);
  font-size: 0.86rem;
  line-height: 1.8;
}

.closing-section {
  position: relative;
  padding: clamp(5rem, 9vw, 9rem) 2rem;
  text-align: center;
}

.closing-section .eyebrow {
  margin-bottom: 2rem;
}

.closing-link {
  display: inline-flex;
  align-items: flex-start;
  gap: 1rem;
  font-family: var(--display);
  font-size: clamp(2.8rem, 6.5vw, 6.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.07em;
}

.closing-link::after {
  position: absolute;
  bottom: 27%;
  left: 50%;
  width: min(76vw, 62rem);
  height: 0.22em;
  z-index: -1;
  background: var(--acid);
  content: "";
  transform: translateX(-50%) scaleX(0.15);
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.closing-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.closing-link span {
  font-family: var(--sans);
  font-size: 0.25em;
  transition: transform 250ms ease;
}

.closing-link:hover span {
  transform: translate(0.3rem, -0.3rem);
}

.contact-email {
  display: table;
  margin: 1.5rem auto 0;
  padding-bottom: 0.2rem;
  border-bottom: 1px solid currentColor;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  text-transform: lowercase;
}

.contact-email:hover {
  color: var(--blue);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: 1.4rem 2rem;
  border-top: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0;
}

.site-footer p:nth-child(2) {
  text-align: center;
}

.site-footer a {
  text-align: right;
}

.reveal {
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 720ms ease, transform 720ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

.hero-title .reveal:nth-child(2) { transition-delay: 90ms; }
.hero-title .reveal:nth-child(3) { transition-delay: 180ms; }

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

@media (max-width: 980px) {
  .hero-title {
    font-size: clamp(3.1rem, 8.2vw, 5.6rem);
  }

  .title-line-indent { padding-left: 5vw; }
  .title-line-serif { padding-left: 24vw; }

  .section-heading {
    grid-template-columns: 1fr 2fr;
  }

  .section-heading .eyebrow {
    grid-column: 1 / -1;
  }

  .project-card,
  .project-card-wide,
  .project-card:nth-child(3),
  .project-card:nth-child(7) {
    grid-column: span 6;
  }

  .approach-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 1rem;
  }

  .main-nav a:nth-child(2) {
    display: none;
  }

  .main-nav a:nth-child(3) {
    display: none;
  }

  .main-nav {
    gap: 1rem;
  }

  .hero {
    min-height: 76svh;
    padding: 6rem 1rem 1.5rem;
  }

  .hero-kicker span:nth-child(2) {
    display: none;
  }

  .hero-title {
    margin-block: 2.5rem;
    width: 100%;
    font-size: clamp(2.15rem, 10.8vw, 4.2rem);
    line-height: 1.02;
    letter-spacing: -0.09em;
  }

  .title-line-indent,
  .title-line-serif {
    padding-left: 0;
  }

  .title-line-serif {
    text-align: right;
  }

  .hero-foot {
    align-items: flex-end;
  }

  .hero-foot p {
    max-width: 12rem;
  }

  .hero-orbit {
    top: 22%;
    right: 0.5rem;
    width: 11rem;
    opacity: 0.8;
  }

  .work-section,
  .approach-section {
    padding: 4rem 1rem;
  }

  .section-heading {
    display: block;
    margin-bottom: 3rem;
  }

  .section-heading .eyebrow,
  .section-heading h2 {
    margin-bottom: 1.5rem;
  }

  .section-heading h2,
  .approach-lead h2 {
    font-size: clamp(2.7rem, 12vw, 4rem);
  }

  .project-grid {
    display: block;
  }

  .project-card {
    margin-bottom: 3.5rem;
  }

  .project-meta {
    gap: 1rem;
  }

  .project-meta span:last-child {
    text-align: right;
  }

  .approach-list li {
    grid-template-columns: 3rem 1fr;
  }

  .approach-list p {
    grid-column: 2;
  }

  .closing-section {
    padding-inline: 1rem;
  }

  .closing-link {
    font-size: clamp(2.5rem, 12vw, 4rem);
  }

  .site-footer {
    grid-template-columns: 1fr 1fr;
    gap: 0.7rem;
    padding-inline: 1rem;
  }

  .site-footer p:nth-child(2) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}