:root {
  --bg: #f7f5f0;
  --surface: #fbfaf7;
  --surface-muted: #eeebe4;
  --ink: #202322;
  --muted: #6e716d;
  --faint: #a9aaa4;
  --line: rgba(32, 35, 34, .15);
  --line-strong: rgba(32, 35, 34, .34);
  --accent: #1f2524;
  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Inter", "Pretendard", "Noto Sans KR", Arial, sans-serif;
  --rail: 132px;
  --pad-x: clamp(34px, 5vw, 72px);
  --section-y: clamp(76px, 9vw, 132px);
  --hair: 1px solid var(--line);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: .14em;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.side-rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;
  width: var(--rail);
  border-right: var(--hair);
  background: rgba(247, 245, 240, .78);
  backdrop-filter: blur(18px);
  display: grid;
  grid-template-rows: 126px 112px 1fr 160px;
  padding: 54px 34px 38px;
}
.mark {
  font-family: var(--serif);
  font-size: 38px;
  line-height: .8;
  letter-spacing: -.08em;
  text-transform: none;
}
.rail-index,
.rail-foot,
.rail-link {
  font-size: 9px;
  line-height: 1.65;
  font-weight: 700;
}
.rail-index { align-self: end; }
.rail-index i,
.section-label i,
.eyebrow i,
.work-copy i,
.line-link span,
.inquiry-form button span {
  display: inline-block;
  width: 28px;
  height: 1px;
  margin-left: 14px;
  background: currentColor;
  vertical-align: middle;
}
.rail-nav {
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
}
.rail-link {
  color: var(--muted);
  transition: color .35s ease, transform .35s ease;
}
.rail-link span {
  display: block;
  margin-bottom: 8px;
}
.rail-link.active {
  color: var(--ink);
  transform: translateX(6px);
}
.rail-foot {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  color: var(--muted);
  align-self: end;
}

.site-shell {
  min-height: 100vh;
  margin-left: var(--rail);
  background:
    linear-gradient(90deg, rgba(32,35,34,.035) 1px, transparent 1px) 0 0 / 25% 100%,
    var(--bg);
}
.topbar {
  min-height: 110px;
  padding: 48px var(--pad-x) 24px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 52px;
  align-items: start;
}
.wordmark {
  display: block;
  font-size: clamp(23px, 2.1vw, 34px);
  letter-spacing: .38em;
  font-weight: 500;
}
.topbar p {
  margin: 18px 0 0;
  color: var(--faint);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .34em;
}
.topnav {
  display: flex;
  gap: clamp(24px, 3vw, 46px);
  align-items: center;
  font-size: 10px;
  font-weight: 700;
}
.topnav a,
.footer a {
  position: relative;
}
.topnav a::after,
.footer a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.topnav a:hover::after,
.footer a:hover::after { transform: scaleX(1); }
.menu-button {
  width: 22px;
  height: 18px;
  border: 0;
  padding: 0;
  background: transparent;
  display: grid;
  gap: 5px;
  cursor: pointer;
}
.menu-button span {
  display: block;
  height: 1px;
  background: var(--ink);
}

.hero {
  min-height: 800px;
  display: grid;
  grid-template-columns: minmax(220px, 26%) minmax(480px, 58%) minmax(180px, 18%);
  align-items: end;
  border-bottom: var(--hair);
  padding: 10px var(--pad-x) 0;
}
.hero-copy {
  position: relative;
  z-index: 3;
  align-self: center;
  padding-bottom: 78px;
}
.eyebrow,
.section-label {
  margin: 0 0 70px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .2em;
}
.hero h1,
.work-copy h2,
.philosophy blockquote,
.materials h2,
.inquiry h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  text-transform: none;
  letter-spacing: -.025em;
  line-height: .96;
}
.hero h1 { font-size: clamp(56px, 5vw, 86px); }
.summary {
  max-width: 260px;
  margin: 46px 0 44px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.95;
  font-weight: 700;
}
.line-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .18em;
}
.line-link span {
  width: 36px;
  margin-left: 0;
  transition: width .35s ease;
}
.line-link:hover span { width: 58px; }
.hero-image {
  position: relative;
  z-index: 2;
  margin: 0;
  align-self: stretch;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero-image img {
  width: 100%;
  height: min(690px, 74vh);
  object-fit: cover;
  object-position: 58% center;
  filter: saturate(.72) contrast(.98) brightness(1.08);
  transform: scale(1.01);
  animation: slowZoom 20s ease-in-out infinite alternate;
}
.drawing-panel {
  position: relative;
  align-self: stretch;
  min-height: 650px;
  opacity: .7;
  overflow: hidden;
}
.drawing-panel img {
  position: absolute;
  right: -62px;
  bottom: 36px;
  width: min(370px, 26vw);
  min-width: 250px;
}
.coord,
.scale {
  position: absolute;
  color: rgba(32,35,34,.32);
  font-size: 9px;
  font-weight: 700;
}
.coord-a { right: 76px; top: 220px; }
.coord-b { right: 28px; bottom: 230px; writing-mode: vertical-rl; }
.scale { right: 84px; bottom: 88px; letter-spacing: .3em; }
.indicator {
  position: absolute;
  right: 42px;
  bottom: 72px;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(32,35,34,.34);
  border-radius: 50%;
}
.indicator::before,
.indicator::after {
  content: "";
  position: absolute;
  background: rgba(32,35,34,.34);
}
.indicator::before { left: 50%; top: 6px; bottom: 6px; width: 1px; }
.indicator::after { top: 50%; left: 6px; right: 6px; height: 1px; }

.works {
  display: grid;
  grid-template-columns: 1.25fr .95fr;
  gap: clamp(44px, 7vw, 88px);
  padding: var(--section-y) var(--pad-x);
  border-bottom: var(--hair);
}
.works > .section-label { grid-column: 1 / -1; margin-bottom: -24px; }
.work-card {
  display: grid;
  gap: 26px;
}
.image-link {
  overflow: hidden;
  background: var(--surface-muted);
}
.image-link img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(.72) contrast(.96);
  transition: transform .8s ease, filter .8s ease;
}
.image-link:hover img {
  transform: scale(1.025);
  filter: saturate(.82) contrast(1);
}
.work-copy {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 18px;
  align-items: start;
}
.work-copy p {
  margin: 8px 0 0;
  font-size: 11px;
  letter-spacing: .22em;
}
.work-copy h2 {
  font-size: clamp(30px, 3vw, 45px);
}
.work-copy span {
  grid-column: 2;
  max-width: 230px;
  margin: 26px 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.8;
  font-weight: 700;
}
.work-copy .line-link { grid-column: 2; }
.line-link.small { font-size: 9px; }
.work-stack {
  display: grid;
  gap: 70px;
  padding-top: 6px;
}
.work-stack .work-card {
  grid-template-columns: minmax(220px, 1fr) 210px;
  gap: 42px;
  align-items: center;
}
.work-copy.side {
  grid-template-columns: 1fr;
  gap: 14px;
}
.work-copy.side span,
.work-copy.side .line-link { grid-column: auto; }

.philosophy {
  display: grid;
  grid-template-columns: .72fr 1fr .9fr .78fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: start;
  padding: 78px var(--pad-x);
  border-bottom: var(--hair);
}
.philosophy .section-label { margin: 0; }
.philosophy blockquote {
  font-size: clamp(35px, 3.3vw, 55px);
}
.philo-body {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 2;
  text-transform: none;
  letter-spacing: .04em;
}
.method-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: start;
}
.method-list span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
}
.method-list ul {
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 2.2;
  font-weight: 700;
}

.materials {
  display: grid;
  grid-template-columns: .7fr minmax(0, 2.7fr) .72fr;
  gap: 38px;
  padding: 84px var(--pad-x);
  border-bottom: var(--hair);
}
.materials .section-label { margin: 0; }
.material-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.material {
  margin: 0;
  overflow: hidden;
  position: relative;
}
.material img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  transition: transform .7s ease;
}
.material:hover img { transform: scale(1.035); }
.material figcaption {
  position: absolute;
  left: 14px;
  bottom: 14px;
  color: rgba(255,255,255,.86);
  font-size: 9px;
  font-weight: 800;
  text-shadow: 0 1px 10px rgba(0,0,0,.28);
}
.material-copy h2 {
  font-size: clamp(28px, 2.5vw, 42px);
}
.material-copy p {
  margin: 34px 0 38px;
  color: var(--muted);
  font-size: 10px;
  line-height: 2;
  font-weight: 800;
}

.inquiry {
  display: grid;
  grid-template-columns: .7fr .9fr .9fr 1.35fr;
  gap: clamp(28px, 4vw, 68px);
  align-items: start;
  padding: 78px var(--pad-x) 96px;
  min-height: 360px;
}
.inquiry .section-label { margin: 0; }
.inquiry h2 {
  font-size: clamp(36px, 3.1vw, 52px);
}
.contact-copy {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.9;
  text-transform: none;
  letter-spacing: .04em;
}
.contact-copy a {
  display: block;
  margin-top: 12px;
  color: var(--ink);
}
.inquiry-form {
  display: grid;
  gap: 22px;
}
.inquiry-form label {
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
}
.inquiry-form input,
.inquiry-form textarea,
.inquiry-form select {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  padding: 8px 0 10px;
  color: var(--ink);
  font: 500 14px/1.4 var(--sans);
  border-radius: 0;
}
.inquiry-form input:focus,
.inquiry-form textarea:focus,
.inquiry-form select:focus {
  outline: 0;
  border-color: var(--ink);
}
.inquiry-form button {
  justify-self: start;
  border: 0;
  background: transparent;
  padding: 16px 0 0;
  color: var(--ink);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .18em;
  cursor: pointer;
}

.footer {
  min-height: 86px;
  padding: 0 var(--pad-x) 42px;
  display: grid;
  grid-template-columns: auto auto auto 1fr auto auto auto;
  gap: 42px;
  align-items: end;
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
}

.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .8s ease, transform .8s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@keyframes slowZoom {
  from { transform: scale(1.01); }
  to { transform: scale(1.045); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}

@media (max-width: 1100px) {
  :root { --rail: 96px; --pad-x: 34px; }
  .side-rail { padding-inline: 22px; }
  .topnav { display: none; }
  .hero {
    grid-template-columns: 34% 66%;
    min-height: 720px;
  }
  .drawing-panel {
    grid-column: 2;
    min-height: 220px;
  }
  .drawing-panel img { right: 0; bottom: 0; width: 270px; }
  .works,
  .philosophy,
  .materials,
  .inquiry {
    grid-template-columns: 1fr;
  }
  .work-stack .work-card { grid-template-columns: 1fr; }
  .material-grid { grid-template-columns: repeat(4, minmax(130px, 1fr)); overflow-x: auto; }
}

@media (max-width: 720px) {
  :root { --rail: 0px; --pad-x: 22px; }
  body { letter-spacing: .1em; }
  .side-rail { display: none; }
  .site-shell { margin-left: 0; }
  .topbar {
    min-height: 92px;
    grid-template-columns: 1fr auto;
    padding-top: 28px;
  }
  .wordmark { font-size: 18px; letter-spacing: .24em; }
  .topbar p { font-size: 8px; letter-spacing: .2em; }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 20px;
    min-height: auto;
  }
  .hero-copy {
    padding: 44px 0 24px;
  }
  .eyebrow,
  .section-label { margin-bottom: 28px; }
  .hero h1 { font-size: 58px; }
  .summary { margin: 28px 0; }
  .hero-image img {
    height: auto;
    aspect-ratio: 4 / 5;
    object-position: 60% center;
  }
  .drawing-panel {
    grid-column: auto;
    min-height: 170px;
  }
  .coord { display: none; }
  .works,
  .philosophy,
  .materials,
  .inquiry {
    padding-block: 58px;
  }
  .work-copy,
  .work-copy.side { grid-template-columns: 1fr; }
  .work-copy span,
  .work-copy .line-link { grid-column: auto; }
  .material-grid {
    grid-template-columns: repeat(2, 1fr);
    overflow: visible;
  }
  .footer {
    grid-template-columns: repeat(3, auto);
    gap: 20px;
  }
  .footer span { display: none; }
}