:root {
  --paper: #fcfcfc;
  --sky: #d9e8f1;
  --blue: #3932dc;
  --ink: #08071d;
  --muted: #5e6271;
  --line: #dedfe6;
  --font: "Manrope", "Noto Sans KR", sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 6px;
}
::selection {
  background: var(--blue);
  color: white;
}
button {
  border: 0;
}
h1,
h2,
h3,
p {
  margin: 0;
}
button[hidden],
[hidden] {
  display: none !important;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 20px;
  padding: 12px 20px;
  background: var(--paper);
  z-index: 100;
  transform: translateY(-160%);
}
.skip-link:focus {
  transform: none;
}
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  padding: 0 32px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition:
    background 0.3s,
    border-color 0.3s;
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(252, 252, 252, 0.94);
  border-color: var(--line);
  backdrop-filter: blur(16px);
}
.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  width: 34%;
}
.nav-right {
  justify-content: flex-end;
}
.nav-left a,
.nav-blog {
  transition: color 0.2s;
}
.nav-left a:hover,
.nav-blog:hover {
  color: var(--blue);
}
.brand {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -1.4px;
}
.header > .brand {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.brand-dot {
  color: var(--blue);
}
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 25px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  transition:
    background 0.2s,
    transform 0.2s;
}
.pill:hover {
  transform: translateY(-2px);
}
.pill-dark {
  background: var(--ink);
  color: var(--paper);
}
.pill-dark:hover {
  background: var(--blue);
}
.menu-toggle {
  display: none;
  background: transparent;
  font-size: 12px;
  padding: 12px;
}
.mobile-menu {
  position: absolute;
  top: 64px;
  left: 0;
  width: 100%;
  padding: 28px 24px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.mobile-menu a {
  display: block;
  padding: 12px 0;
  font-size: 24px;
}
.hero-track {
  height: 240svh;
  background: var(--sky);
  position: relative;
}
.hero-sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  min-height: 620px;
  overflow: hidden;
  isolation: isolate;
}
.hero-copy {
  position: absolute;
  top: clamp(105px, 12.5svh, 160px);
  left: 24px;
  right: 24px;
  z-index: 2;
  text-align: center;
  pointer-events: none;
  will-change: transform, opacity;
}
.hero-copy h1 {
  font-size: clamp(62px, 6.7vw, 104px);
  font-weight: 600;
  line-height: 0.97;
  letter-spacing: -0.065em;
}
.hero-copy p {
  margin-top: 32px;
  font-size: 18px;
  line-height: 1.65;
  letter-spacing: -0.035em;
}
.studio {
  position: absolute;
  inset: 34% 0 0;
  z-index: 1;
  cursor: grab;
  touch-action: pan-y;
}
.studio.dragging {
  cursor: grabbing;
}
.studio canvas {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
}
.studio-fallback {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.studio-loading {
  position: absolute;
  top: 50%;
  width: 100%;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}
.studio-loading span {
  letter-spacing: 3px;
}
.chapter-copy {
  position: absolute;
  top: 28%;
  left: 7%;
  width: 390px;
  z-index: 3;
  opacity: 0;
  pointer-events: none;
  will-change: transform, opacity;
}
.chapter-kicker {
  font-size: 13px;
  display: block;
  margin-bottom: 20px;
}
.chapter-copy h2 {
  font-size: clamp(46px, 5vw, 76px);
  line-height: 1.02;
  font-weight: 500;
  letter-spacing: -0.06em;
}
.chapter-copy p {
  margin-top: 24px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.hero-bottom {
  position: absolute;
  bottom: 35px;
  left: 40px;
  right: 40px;
  z-index: 5;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  font-size: 11px;
}
.studio-note {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  width: 260px;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
}
.studio-location {
  display: block;
  width: 100%;
  margin-left: 15px;
  margin-top: 3px;
  color: #596675;
}
.scroll-cue {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.03em;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}
.scroll-line {
  height: 1px;
  width: 100%;
  background: var(--ink);
}
.studio-tools {
  display: flex;
  gap: 4px;
}
.studio-tools button {
  background: rgba(252, 252, 252, 0.55);
  border: 1px solid rgba(252, 252, 252, 0.5);
  border-radius: 30px;
  padding: 10px 14px;
  font-size: 11px;
  backdrop-filter: blur(12px);
  transition: background 0.2s;
}
.studio-tools button:hover {
  background: var(--paper);
}
.studio-tools button[aria-pressed="true"] {
  background: var(--ink);
  color: white;
}
.scroll-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(8, 7, 29, 0.07);
  z-index: 5;
}
.scroll-progress span {
  display: block;
  background: var(--blue);
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left;
}
.section {
  padding: 145px 6%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9%;
  scroll-margin-top: 0;
}
.section-label {
  font-size: 13px;
  margin-bottom: 28px;
}
.section-heading h2 {
  font-size: clamp(42px, 4.4vw, 66px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.06em;
}
.section-description {
  margin-top: 32px;
  font-size: 16px;
  color: var(--muted);
  line-height: 1.9;
  letter-spacing: -0.025em;
}
.approach-list {
  padding-top: 43px;
}
details {
  border-bottom: 1px solid var(--line);
}
summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 28px 0;
  cursor: pointer;
}
summary::-webkit-details-marker {
  display: none;
}
.step-number {
  font-size: 12px;
  width: 36px;
  flex-shrink: 0;
  color: var(--muted);
}
summary h3 {
  font-size: clamp(22px, 2vw, 30px);
  letter-spacing: -0.04em;
  font-weight: 500;
}
.disclosure {
  width: 14px;
  height: 14px;
  margin-left: auto;
  position: relative;
  flex-shrink: 0;
}
.disclosure:before,
.disclosure:after {
  content: "";
  position: absolute;
  background: currentColor;
  top: 6px;
  left: 0;
  width: 14px;
  height: 1px;
}
.disclosure:after {
  transform: rotate(90deg);
  transition: transform 0.2s;
}
details[open] .disclosure:after {
  transform: rotate(0);
}
.detail-copy {
  margin-left: 58px;
  padding-bottom: 32px;
}
.detail-copy p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 420px;
}
.detail-tag {
  display: inline-block;
  margin-top: 22px;
  font-size: 11px;
  color: var(--blue);
  border-radius: 30px;
  background: #eeeeff;
  padding: 8px 13px;
}
.toolkit-section {
  background: var(--blue);
  color: var(--paper);
  padding: 110px 6%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9%;
}
.toolkit-heading h2 {
  font-size: clamp(46px, 5.7vw, 84px);
  font-weight: 500;
  line-height: 1.03;
  letter-spacing: -0.06em;
}
.toolkit-heading > p:last-child {
  margin-top: 36px;
  font-size: 16px;
  line-height: 1.8;
  color: #d8d6ff;
}
.toolkit-list article {
  padding: 30px 0 34px;
  border-bottom: 1px solid #ffffff40;
}
.toolkit-list article:first-child {
  padding-top: 0;
}
.toolkit-list article:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.toolkit-caption {
  font-size: 11px;
  color: #d8d6ff;
}
.toolkit-list h3 {
  margin-top: 10px;
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.04em;
}
.toolkit-list p {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.8;
  color: #e0dfff;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 20px;
}
.tags span {
  border: 1px solid #ffffff40;
  border-radius: 30px;
  padding: 7px 12px;
  font-size: 11px;
}
.profile-section {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 8%;
  padding: 130px 6%;
  align-items: center;
}
.profile-visual {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  background: var(--sky);
  aspect-ratio: 1.05;
}
.profile-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.photo-caption {
  position: absolute;
  bottom: 24px;
  left: 28px;
  font-size: 11px;
  color: #4d5266;
}
.profile-content h2 {
  font-size: clamp(40px, 4.3vw, 64px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.065em;
}
.profile-intro {
  font-size: 17px;
  line-height: 1.8;
  margin-top: 25px;
  color: var(--muted);
}
.profile-content dl {
  margin: 32px 0 25px;
}
.profile-content dl > div {
  display: grid;
  grid-template-columns: 115px 1fr;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.8;
}
.profile-content dt {
  color: var(--muted);
  font-size: 11px;
}
.profile-content dd {
  margin: 0;
}
.profile-links {
  display: flex;
  gap: 25px;
  font-size: 12px;
}
.profile-links a {
  border-bottom: 1px solid var(--ink);
  padding-bottom: 8px;
  display: flex;
  gap: 35px;
}
.profile-links a:hover {
  color: var(--blue);
}
.faq-section {
  background: #f0f4f6;
  padding-top: 100px;
  padding-bottom: 100px;
}
.faq-list summary {
  font-size: 17px;
  padding: 26px 0;
  line-height: 1.6;
}
.faq-list details:first-child {
  border-top: 1px solid var(--line);
}
.faq-list details > p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
  padding-bottom: 25px;
  max-width: 460px;
}
.inline-link {
  display: inline-block;
  color: var(--blue);
  font-size: 13px;
  margin-bottom: 22px;
  text-decoration: underline;
  text-underline-offset: 5px;
}
.contact-section {
  padding: 130px 30px 120px;
  text-align: center;
}
.contact-section h2 {
  font-size: clamp(42px, 6vw, 90px);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 1.06;
}
.contact-section > p:not(.section-label) {
  margin: 32px 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.contact-link {
  background: var(--blue);
  color: white;
  padding: 19px 27px;
  gap: 45px;
}
.contact-link:hover {
  background: var(--ink);
}
footer {
  border-top: 1px solid var(--line);
  padding: 32px 6%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  font-size: 11px;
  color: var(--muted);
}
footer .brand {
  color: var(--ink);
  font-size: 22px;
}
@media (min-width: 1800px) {
  .section,
  .toolkit-section,
  .profile-section {
    padding-left: max(6%, calc((100vw - 1600px) / 2));
    padding-right: max(6%, calc((100vw - 1600px) / 2));
  }
}
@media (max-height: 760px) and (min-width: 801px) {
  .hero-copy {
    top: 100px;
  }
  .hero-copy h1 {
    font-size: 76px;
  }
  .hero-copy p {
    font-size: 15px;
    margin-top: 20px;
  }
  .studio {
    top: 33%;
  }
  .hero-bottom {
    bottom: 23px;
  }
}
@media (max-width: 1000px) {
  .section,
  .toolkit-section,
  .profile-section {
    gap: 6%;
    padding-left: 5%;
    padding-right: 5%;
  }
  .chapter-copy {
    left: 5%;
    width: 290px;
  }
  .chapter-copy h2 {
    font-size: 56px;
  }
  .profile-content dl > div {
    grid-template-columns: 95px 1fr;
  }
}
@media (max-width: 800px) {
  html {
    scroll-padding-top: 64px;
  }
  .header {
    height: 64px;
    padding: 0 18px;
  }
  .header > .brand {
    position: static;
    transform: none;
    font-size: 22px;
  }
  .nav-left,
  .nav-blog {
    display: none;
  }
  .nav-right {
    width: auto;
    gap: 8px;
  }
  .pill-dark {
    padding: 11px 17px;
    font-size: 11px;
  }
  .menu-toggle {
    display: block;
  }
  .hero-track {
    height: 210svh;
  }
  .hero-sticky {
    min-height: 580px;
  }
  .hero-copy {
    top: 120px;
    left: 18px;
    right: 18px;
  }
  .hero-copy h1 {
    font-size: clamp(36px, 11.8vw, 72px);
    letter-spacing: -0.065em;
    line-height: 1.03;
  }
  .hero-copy p {
    font-size: 14px;
    line-height: 1.8;
    margin-top: 23px;
  }
  .studio {
    top: 22%;
    bottom: 85px;
  }
  .hero-bottom {
    left: 20px;
    right: 20px;
    bottom: 22px;
    align-items: center;
  }
  .studio-note {
    display: none;
  }
  .scroll-cue {
    position: static;
    transform: none;
    font-size: 9px;
    gap: 7px;
  }
  .studio-tools {
    gap: 3px;
  }
  .studio-tools button {
    font-size: 10px;
    padding: 9px 11px;
  }
  .chapter-copy {
    top: 14%;
    left: 24px;
    width: calc(100% - 48px);
    text-align: center;
  }
  .chapter-kicker {
    font-size: 11px;
    margin-bottom: 15px;
  }
  .chapter-copy h2 {
    font-size: 40px;
    line-height: 1.08;
  }
  .chapter-copy p {
    font-size: 13px;
    line-height: 1.8;
    margin-top: 16px;
  }
  .section,
  .toolkit-section {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
    padding: 80px 24px;
  }
  .section-label {
    font-size: 11px;
    margin-bottom: 20px;
  }
  .section-heading h2 {
    font-size: 45px;
  }
  .section-description {
    font-size: 14px;
    margin-top: 25px;
  }
  .approach-list {
    padding-top: 0;
  }
  .toolkit-heading h2 {
    font-size: clamp(48px, 12vw, 62px);
  }
  .toolkit-heading > p:last-child {
    font-size: 14px;
    margin-top: 25px;
  }
  .toolkit-list {
    margin-top: 12px;
  }
  .toolkit-list h3 {
    font-size: 27px;
  }
  .profile-section {
    grid-template-columns: 1fr;
    padding: 70px 24px;
    gap: 40px;
  }
  .profile-visual {
    aspect-ratio: 1.2;
  }
  .profile-content h2 {
    font-size: 45px;
  }
  .profile-intro {
    font-size: 15px;
  }
  .profile-content dl > div {
    grid-template-columns: 115px 1fr;
  }
  .faq-section {
    gap: 35px;
  }
  .contact-section {
    padding: 90px 20px;
  }
  .contact-section h2 {
    font-size: clamp(36px, 7.8vw, 62px);
  }
  .contact-section > p:not(.section-label) {
    font-size: 14px;
  }
  .contact-link {
    font-size: 12px;
    padding: 17px 20px;
    gap: 28px;
  }
  footer {
    padding: 25px 24px;
    flex-wrap: wrap;
  }
  footer .brand {
    width: 100%;
    margin-bottom: 5px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
  }
  .hero-track {
    height: 100svh;
  }
  .chapter-copy {
    display: none;
  }
  .scroll-progress {
    display: none;
  }
}

@keyframes title-arrive {
  from {
    opacity: 0;
    transform: perspective(1100px) translate3d(80px, 35px, -100px)
      rotateY(18deg) rotateX(8deg);
  }
  to {
    opacity: 1;
    transform: perspective(1100px) translateZ(0);
  }
}
.hero-copy h1 {
  animation: title-arrive 1.25s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.hero-copy p {
  animation: title-arrive 1.4s 0.15s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@media (max-width: 360px) {
  .studio {
    top: 32%;
    bottom: 65px;
  }
  .hero-copy {
    top: 104px;
  }
  .hero-copy p {
    font-size: 12px;
  }
  .chapter-copy h2 {
    font-size: 34px;
  }
  .contact-link {
    font-size: 11px;
    gap: 20px;
    padding: 17px 19px;
  }
  .studio-tools button {
    padding: 9px;
    font-size: 9px;
  }
  .hero-bottom {
    left: 16px;
    right: 16px;
  }
  .scroll-cue {
    font-size: 8px;
  }
}

/* The workspace unfolds into a full-screen, scroll-driven signal journey. */
.hero-track {
  height: 1150svh;
}
.studio {
  --studio-top: 34%;
  --studio-bottom: 0px;
  /* Keep the WebGL drawing buffer stable throughout the scroll journey. */
  inset: 0;
}
.tour-caption {
  top: auto;
  bottom: 110px;
  left: 40px;
  width: 345px;
  padding: 25px 28px;
  border-radius: 16px;
  background: rgba(252, 252, 252, 0.9);
  backdrop-filter: blur(16px);
}
.tour-caption .chapter-kicker {
  font-size: 11px;
  margin-bottom: 15px;
  color: var(--blue);
}
.tour-caption h2 {
  font-size: 32px;
  line-height: 1.09;
  letter-spacing: -0.045em;
}
.tour-caption p {
  font-size: 13px;
  line-height: 1.85;
  margin-top: 16px;
}
.journey-nav {
  position: absolute;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  display: flex;
  gap: 3px;
  padding: 4px 8px;
  border-radius: 30px;
  background: rgba(252, 252, 252, 0.82);
  backdrop-filter: blur(12px);
}
.journey-nav button {
  width: 24px;
  height: 28px;
  padding: 0;
  display: grid;
  place-items: center;
  background: transparent;
  border-radius: 14px;
}
.journey-nav button::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 6px;
  background: #adb4ca;
  transition:
    background 0.2s,
    width 0.2s;
}
.journey-nav button[aria-current="step"]::before {
  width: 18px;
  background: var(--blue);
}
.journey-nav button:hover::before {
  background: var(--blue);
}
.hero-track.static-workspace {
  height: 100svh;
}
.hero-track.static-workspace .studio {
  top: var(--studio-top);
  bottom: var(--studio-bottom);
}
@media (max-width: 800px) {
  .hero-track {
    height: 1050svh;
  }
  .studio {
    --studio-top: 22%;
    --studio-bottom: 85px;
  }
  .tour-caption {
    top: 82px;
    bottom: auto;
    left: 18px;
    width: calc(100% - 36px);
    padding: 17px 20px;
    text-align: left;
  }
  .tour-caption h2 {
    font-size: 24px;
    line-height: 1.13;
  }
  .tour-caption .chapter-kicker {
    font-size: 10px;
    margin-bottom: 10px;
  }
  .tour-caption p {
    font-size: 11px;
    line-height: 1.8;
    margin-top: 10px;
  }
  .journey-nav {
    bottom: 44px;
  }
}
@media (max-width: 360px) {
  .studio {
    --studio-top: 32%;
    --studio-bottom: 65px;
  }
  .tour-caption {
    top: 74px;
    padding: 14px 17px;
  }
  .tour-caption h2 {
    font-size: 22px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .hero-track {
    height: 100svh;
  }
  .journey-nav,
  .tour-caption {
    display: none;
  }
}