:root {
  --ink: #0a0a0a;
  --paper: #f4f4f0;
  --signal: #ff3d00;
  --line: 1.5px;
  --pad: clamp(1.25rem, 3vw, 3rem);
  --font-sans: Arial, "Helvetica Neue", "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  overflow-x: hidden;
}

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

a:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}

::selection {
  color: var(--paper);
  background: var(--signal);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

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

.page-frame {
  position: fixed;
  z-index: 20;
  inset: 0;
  border: 6px solid var(--ink);
  pointer-events: none;
}

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  align-items: flex-start;
  justify-content: space-between;
  padding: calc(var(--pad) + 0.25rem);
}

.brand {
  display: inline-flex;
  align-items: flex-start;
  font-size: clamp(1.4rem, 2.2vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.09em;
  line-height: 0.9;
}

.brand sup {
  margin: -0.1rem 0 0 0.3rem;
  color: var(--signal);
  font-size: 0.48em;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.3vw, 2.5rem);
  font-size: 0.88rem;
  font-weight: 700;
}

.nav > a:not(.nav__cta) {
  position: relative;
  padding: 0.45rem 0;
}

.nav > a:not(.nav__cta)::after {
  position: absolute;
  right: 0;
  bottom: 0.25rem;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 200ms ease;
}

.nav > a:not(.nav__cta):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__cta {
  padding: 0.7rem 0.9rem;
  color: var(--paper);
  background: var(--ink);
  transition: color 180ms ease, background 180ms ease;
}

.nav__cta:hover {
  color: var(--ink);
  background: var(--signal);
}

.hero {
  position: relative;
  display: grid;
  min-height: min(960px, 100svh);
  grid-template-rows: auto 1fr auto;
  padding: clamp(7.5rem, 15vh, 10rem) var(--pad) var(--pad);
  border-bottom: var(--line) solid var(--ink);
}

.hero__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-self: start;
  margin-left: 50%;
  font-size: clamp(0.78rem, 1vw, 0.9rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.35;
  text-transform: uppercase;
}

.hero__meta p {
  margin: 0;
}

.live-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.live-mark i {
  display: inline-block;
  width: 0.6rem;
  height: 0.6rem;
  background: var(--signal);
  border-radius: 50%;
  animation: pulse 1.8s ease-in-out infinite;
}

.wordmark {
  display: flex;
  align-self: center;
  margin: clamp(2rem, 6vh, 5rem) 0;
  font-size: clamp(7rem, 24vw, 24rem);
  font-weight: 900;
  letter-spacing: -0.105em;
  line-height: 0.66;
  white-space: nowrap;
}

.wordmark span {
  display: block;
  will-change: transform;
  transition: transform 550ms cubic-bezier(0.22, 1, 0.36, 1);
}

.wordmark__by {
  position: relative;
  z-index: 2;
}

.wordmark__yoon {
  margin-left: -0.055em;
  -webkit-text-stroke: clamp(1.5px, 0.25vw, 4px) var(--ink);
  color: transparent;
}

.wordmark:hover .wordmark__by {
  transform: translateY(-0.055em);
}

.wordmark:hover .wordmark__yoon {
  transform: translateY(0.055em);
}

.hero__bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
}

.hero__statement {
  margin: 0;
  font-size: clamp(1.25rem, 2vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.24;
}

.hero__statement strong {
  font-weight: 900;
}

.circle-link {
  display: flex;
  width: clamp(8.3rem, 12vw, 11rem);
  aspect-ratio: 1;
  align-items: center;
  justify-content: center;
  border: var(--line) solid var(--ink);
  border-radius: 50%;
  font-size: clamp(0.85rem, 1.1vw, 1rem);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  transition: color 280ms ease, background 280ms ease, transform 280ms ease;
}

.circle-link b {
  margin-left: 0.8rem;
  font-size: 1.45rem;
  font-weight: 400;
}

.circle-link:hover {
  color: var(--paper);
  background: var(--ink);
  transform: rotate(-7deg);
}

.marquee {
  overflow: hidden;
  border-bottom: var(--line) solid var(--ink);
  color: var(--paper);
  background: var(--ink);
}

.marquee__track {
  display: flex;
  width: max-content;
  align-items: center;
  gap: 2.5rem;
  padding: 1rem 0;
  font-size: clamp(1.05rem, 1.8vw, 1.5rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  animation: marquee 20s linear infinite;
}

.marquee__track i {
  color: var(--signal);
  font-style: normal;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) 3fr;
}

.section-label {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--pad);
  border-right: var(--line) solid var(--ink);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
}

.section-label p {
  margin: 0;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.about {
  border-bottom: var(--line) solid var(--ink);
}

.about__content {
  min-height: 80vh;
  padding: clamp(4rem, 9vw, 9rem) var(--pad);
}

.about h2 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(3rem, 7.7vw, 8rem);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 0.96;
}

.about h2 span {
  color: transparent;
  -webkit-text-stroke: clamp(1px, 0.15vw, 2.4px) var(--ink);
}

.about__copy {
  display: grid;
  max-width: 58rem;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 6rem);
  margin: clamp(4rem, 10vw, 9rem) 0 0 auto;
}

.about__copy p {
  margin: 0;
  font-size: clamp(1rem, 1.25vw, 1.2rem);
  letter-spacing: -0.025em;
  line-height: 1.8;
  word-break: keep-all;
}

.approach {
  color: var(--paper);
  background: var(--ink);
  border-bottom: var(--line) solid var(--paper);
}

.section-label--light {
  border-color: rgba(244, 244, 240, 0.5);
}

.approach__content {
  padding: clamp(4rem, 8vw, 8rem) var(--pad) clamp(2rem, 4vw, 4rem);
}

.approach__lead {
  margin: 0 0 clamp(5rem, 12vw, 12rem);
  font-size: clamp(3rem, 8.5vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.08em;
  line-height: 0.88;
}

.approach__lead em {
  color: var(--signal);
  font-style: normal;
}

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

.principles li {
  display: grid;
  grid-template-columns: 4rem 1fr auto;
  align-items: baseline;
  padding: clamp(1.1rem, 2vw, 1.7rem) 0;
  border-top: 1px solid rgba(244, 244, 240, 0.4);
  transition: padding 220ms ease, color 220ms ease;
}

.principles li:last-child {
  border-bottom: 1px solid rgba(244, 244, 240, 0.4);
}

.principles li:hover {
  padding-right: 1rem;
  padding-left: 1rem;
  color: var(--signal);
}

.principles span,
.principles p {
  font-size: 0.85rem;
  font-weight: 700;
}

.principles h3,
.principles p {
  margin: 0;
}

.principles h3 {
  font-size: clamp(1.8rem, 4.2vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.055em;
  text-transform: uppercase;
}

.contact {
  min-height: 94vh;
  padding: var(--pad);
  color: var(--ink);
  background: var(--signal);
}

.contact__eyebrow {
  display: flex;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: var(--line) solid var(--ink);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.contact h2 {
  margin: clamp(3rem, 7vh, 6rem) 0;
  font-size: clamp(4.2rem, 13vw, 14rem);
  font-weight: 900;
  letter-spacing: -0.09em;
  line-height: 0.78;
}

.contact h2 span {
  color: transparent;
  -webkit-text-stroke: clamp(1.5px, 0.2vw, 3.5px) var(--ink);
}

.contact__bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-top: clamp(5rem, 12vh, 10rem);
}

.contact__bottom p {
  margin: 0;
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.45;
}

.contact__link {
  display: flex;
  min-width: min(100%, 24rem);
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 0;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 900;
  transition: padding 220ms ease, color 220ms ease;
}

.contact__link span {
  font-size: 1.8rem;
  font-weight: 400;
  transition: transform 220ms ease;
}

.contact__link:hover {
  padding-right: 0.75rem;
  padding-left: 0.75rem;
  color: var(--paper);
}

.contact__link:hover span {
  transform: rotate(45deg);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  gap: 2rem;
  padding: 1.25rem var(--pad) 1.5rem;
  color: var(--paper);
  background: var(--ink);
  font-size: 0.8rem;
}

.site-footer a {
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: -0.06em;
}

.site-footer p {
  margin: 0;
}

.site-footer p:last-child {
  text-align: right;
}

.cursor {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 0.7rem;
  height: 0.7rem;
  background: var(--signal);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: width 140ms ease, height 140ms ease, opacity 140ms ease;
  mix-blend-mode: difference;
}

.cursor.is-visible {
  opacity: 1;
}

.cursor.is-active {
  width: 2.2rem;
  height: 2.2rem;
}

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

@keyframes pulse {
  50% {
    opacity: 0.3;
    transform: scale(0.72);
  }
}

@media (max-width: 760px) {
  .page-frame {
    border-width: 4px;
  }

  .site-header {
    padding: 1.4rem;
  }

  .nav > a:not(.nav__cta) {
    display: none;
  }

  .nav__cta {
    padding: 0.58rem 0.68rem;
    font-size: 0.78rem;
  }

  .hero {
    min-height: 100svh;
    padding: 7rem 1.4rem 1.5rem;
  }

  .hero__meta {
    grid-template-columns: 1fr;
    gap: 0.7rem;
    margin-left: 45%;
  }

  .hero__meta p:last-child {
    display: none;
  }

  .wordmark {
    display: block;
    margin: 2.5rem 0;
    font-size: clamp(7.2rem, 36vw, 13rem);
    line-height: 0.55;
    white-space: normal;
  }

  .wordmark__yoon {
    margin-top: 0.17em;
    margin-left: 0;
  }

  .hero__bottom {
    gap: 1.5rem;
  }

  .circle-link {
    width: 7.2rem;
    flex: 0 0 auto;
  }

  .section-grid {
    grid-template-columns: 3.5rem 1fr;
  }

  .section-label {
    padding: 1.5rem 1rem;
  }

  .about__content,
  .approach__content {
    padding: 4.5rem 1.4rem;
  }

  .about__content {
    min-height: auto;
  }

  .about h2 {
    font-size: clamp(2.5rem, 11vw, 4.2rem);
  }

  .about__copy {
    grid-template-columns: 1fr;
    gap: 1.8rem;
    margin-top: 4rem;
  }

  .approach__lead {
    margin-bottom: 5rem;
    font-size: clamp(2.55rem, 11vw, 4.2rem);
  }

  .principles li {
    grid-template-columns: 2rem 1fr;
    gap: 0.5rem;
  }

  .principles li > p {
    grid-column: 2;
    margin-top: 0.3rem;
  }

  .contact {
    min-height: 88vh;
    padding: 2rem 1.4rem;
  }

  .contact__eyebrow span:last-child {
    display: none;
  }

  .contact h2 {
    margin-top: 5rem;
    font-size: clamp(4rem, 19vw, 7.5rem);
    line-height: 0.82;
  }

  .contact__bottom {
    align-items: stretch;
    flex-direction: column;
    margin-top: 7rem;
  }

  .contact__link {
    width: 100%;
  }

  .site-footer {
    grid-template-columns: 1fr 1fr;
    padding: 1.3rem 1.4rem 1.6rem;
  }

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

@media (hover: none), (pointer: coarse) {
  .cursor {
    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;
  }
}