:root {
  --paper: #f4f4f0;
  --paper-raised: #fafaf7;
  --ink: #161817;
  --muted: #6f7572;
  --line: rgba(22, 24, 23, 0.14);
  --line-strong: rgba(22, 24, 23, 0.3);
  --mint: #87d9c0;
  --mint-dark: #23866c;
  --header-height: 5.25rem;
  --gutter: clamp(1.25rem, 4vw, 5rem);
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, SUIT, "Noto Sans KR", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), rgba(22, 24, 23, 0.035) 50%, transparent calc(50% + 0.5px)),
    var(--paper);
  color: var(--ink);
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: white;
  font-size: 0.82rem;
  transform: translateY(-150%);
}

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

.process-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0 var(--gutter);
  border-bottom: 1px solid transparent;
  background: rgba(244, 244, 240, 0.78);
  backdrop-filter: blur(18px);
  transition: border-color 240ms ease, background-color 240ms ease;
}

.process-header[data-scrolled="true"] {
  border-bottom-color: var(--line);
  background: rgba(244, 244, 240, 0.94);
}

.process-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
}

.process-brand > span {
  display: grid;
  width: 2.15rem;
  height: 2.15rem;
  place-items: center;
  background: var(--ink);
  color: white;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.process-header nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2.5rem);
  font-size: 0.76rem;
  font-weight: 700;
}

.process-header nav a {
  position: relative;
  padding: 0.8rem 0;
}

.process-header nav a:not(.header-contact)::after {
  position: absolute;
  right: 0;
  bottom: 0.45rem;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

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

.header-contact {
  padding: 0.75rem 1.05rem !important;
  border: 1px solid var(--ink);
  transition: background-color 180ms ease, color 180ms ease;
}

.header-contact:hover,
.header-contact:focus-visible {
  background: var(--ink);
  color: white;
}

.eyebrow {
  margin: 0;
  color: var(--mint-dark);
  font-size: clamp(0.62rem, 0.78vw, 0.74rem);
  font-weight: 800;
  letter-spacing: 0.2em;
}

.process-hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  align-content: center;
  padding: calc(var(--header-height) + 4rem) var(--gutter) 5rem;
  overflow: hidden;
}

.process-hero::before,
.process-hero::after {
  position: absolute;
  width: clamp(16rem, 35vw, 34rem);
  height: clamp(16rem, 35vw, 34rem);
  border: 1px solid rgba(22, 24, 23, 0.08);
  border-radius: 50%;
  content: "";
}

.process-hero::before {
  top: 14%;
  right: 10%;
}

.process-hero::after {
  top: 26%;
  right: 3%;
  border-color: rgba(135, 217, 192, 0.45);
}

.process-hero-copy {
  position: relative;
  z-index: 1;
  width: min(68rem, 88vw);
}

.process-hero h1 {
  max-width: 11ch;
  margin: clamp(1.5rem, 3vw, 2.5rem) 0 0;
  font-size: clamp(4rem, 9.2vw, 10.5rem);
  font-weight: 650;
  letter-spacing: -0.078em;
  line-height: 0.91;
}

.process-hero-lede {
  max-width: 37rem;
  margin: clamp(2rem, 4.5vw, 4rem) 0 0;
  color: #505653;
  font-size: clamp(1rem, 1.35vw, 1.28rem);
  line-height: 1.78;
  word-break: keep-all;
}

.process-hero-meta {
  position: absolute;
  right: var(--gutter);
  bottom: clamp(3.5rem, 7vh, 6rem);
  z-index: 1;
  display: grid;
  gap: 0.7rem;
  min-width: 16rem;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.process-hero-meta span {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.process-hero-meta span::before {
  width: 0.42rem;
  height: 0.42rem;
  background: var(--mint);
  content: "";
}

.scroll-cue {
  position: absolute;
  bottom: clamp(3.5rem, 7vh, 6rem);
  left: var(--gutter);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.scroll-cue i {
  position: relative;
  width: 3.5rem;
  height: 1px;
  background: var(--line-strong);
  overflow: hidden;
}

.scroll-cue i::after {
  position: absolute;
  inset: 0;
  background: var(--ink);
  content: "";
  transform: translateX(-100%);
  animation: scroll-cue 1.8s ease-in-out infinite;
}

@keyframes scroll-cue {
  55%, 100% { transform: translateX(100%); }
}

.process-story {
  display: grid;
  grid-template-columns: minmax(0, 1.13fr) minmax(25rem, 0.87fr);
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.process-visual-column {
  min-width: 0;
  border-right: 1px solid var(--line);
}

.process-visual-sticky {
  position: sticky;
  top: var(--header-height);
  display: grid;
  height: calc(100svh - var(--header-height));
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  align-items: center;
  padding: clamp(1.25rem, 2.4vw, 2.5rem) var(--gutter) 1.5rem;
  overflow: hidden;
}

.visual-status {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.visual-status > span {
  font-size: clamp(1.5rem, 2.2vw, 2.4rem);
  font-weight: 650;
  letter-spacing: -0.07em;
}

.visual-status p {
  display: grid;
  gap: 0.22rem;
  margin: 0;
}

.visual-status b,
.visual-status strong,
.visual-status em {
  font-style: normal;
}

.visual-status b {
  color: var(--mint-dark);
  font-size: 0.55rem;
  letter-spacing: 0.15em;
}

.visual-status strong {
  font-size: 0.9rem;
}

.visual-status em {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
}

.process-canvas-shell {
  position: relative;
  width: min(100%, 44rem);
  aspect-ratio: 1;
  justify-self: center;
}

.process-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.canvas-corners i {
  position: absolute;
  width: 1.25rem;
  height: 1.25rem;
  border-color: var(--line-strong);
  border-style: solid;
  pointer-events: none;
}

.canvas-corners i:nth-child(1) { inset: 0 auto auto 0; border-width: 1px 0 0 1px; }
.canvas-corners i:nth-child(2) { inset: 0 0 auto auto; border-width: 1px 1px 0 0; }
.canvas-corners i:nth-child(3) { inset: auto auto 0 0; border-width: 0 0 1px 1px; }
.canvas-corners i:nth-child(4) { inset: auto 0 0 auto; border-width: 0 1px 1px 0; }

.visual-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.5rem;
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 650;
}

.visual-legend span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.visual-legend i {
  width: 0.48rem;
  height: 0.48rem;
}

.legend-base { background: #333735; }
.legend-active { background: var(--mint); }
.legend-optional { border: 1px solid #919895; }

.process-mini-map {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0.3rem;
  width: 100%;
  margin-top: 1.25rem;
}

.process-mini-map button {
  position: relative;
  height: 1.4rem;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.process-mini-map button::before {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  height: 2px;
  background: rgba(22, 24, 23, 0.14);
  content: "";
  transition: height 180ms ease, background-color 180ms ease;
}

.process-mini-map button[data-active="true"]::before {
  height: 4px;
  background: var(--mint-dark);
}

.process-mini-map button:hover::before,
.process-mini-map button:focus-visible::before {
  background: var(--ink);
}

.process-visual-sticky noscript img {
  position: absolute;
  inset: 18% 8%;
  width: 84%;
  height: 64%;
  object-fit: contain;
}

.process-chapters {
  min-width: 0;
}

.process-chapter {
  position: relative;
  display: grid;
  min-height: 92svh;
  align-items: center;
  padding: clamp(4rem, 10vh, 8rem) clamp(1.5rem, 5vw, 6rem);
  border-bottom: 1px solid var(--line);
  opacity: 0.34;
  transition: opacity 320ms ease;
}

.process-chapter[data-active="true"] {
  opacity: 1;
}

.process-chapter::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--mint-dark);
  content: "";
  transition: width 480ms cubic-bezier(0.22, 1, 0.36, 1);
}

.process-chapter[data-active="true"]::before {
  width: 100%;
}

.chapter-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(1.4rem, 3vw, 3rem);
  width: min(100%, 39rem);
}

.chapter-number {
  margin: 0.2rem 0 0;
  color: var(--mint-dark);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  writing-mode: vertical-rl;
}

.chapter-copy {
  min-width: 0;
}

.chapter-kicker {
  margin: 0 0 1.1rem;
  color: var(--mint-dark);
  font-size: 0.61rem !important;
  font-weight: 800;
  letter-spacing: 0.17em;
}

.chapter-copy h2 {
  margin: 0;
  font-size: clamp(2.1rem, 4.25vw, 4.75rem);
  font-weight: 620;
  letter-spacing: -0.058em;
  line-height: 1.03;
  word-break: keep-all;
}

.chapter-copy > p:not(.chapter-kicker, .chapter-emphasis) {
  margin: clamp(1.5rem, 2.7vw, 2.4rem) 0 0;
  color: #4f5552;
  font-size: clamp(0.96rem, 1.17vw, 1.12rem);
  line-height: 1.82;
  word-break: keep-all;
}

.chapter-facts {
  display: grid;
  gap: 0;
  margin: 2rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
  list-style: none;
}

.chapter-facts li {
  position: relative;
  padding: 0.9rem 0 0.9rem 1.25rem;
  border-bottom: 1px solid var(--line);
  color: #454a47;
  font-size: 0.76rem;
}

.chapter-facts li::before {
  position: absolute;
  top: 1.18rem;
  left: 0;
  width: 0.42rem;
  height: 0.42rem;
  background: var(--mint);
  content: "";
}

.chapter-facts-compact {
  grid-template-columns: repeat(3, 1fr);
}

.chapter-facts-compact li {
  padding-right: 0.5rem;
  border-right: 1px solid var(--line);
}

.chapter-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid rgba(35, 134, 108, 0.28);
  background: rgba(135, 217, 192, 0.1);
}

.chapter-note span {
  color: var(--mint-dark);
  font-size: 0.56rem;
  font-weight: 850;
  letter-spacing: 0.15em;
}

.chapter-note p {
  margin: 0;
  font-size: 0.77rem;
  line-height: 1.65;
}

.chapter-note-optional {
  border-style: dashed;
}

.branch-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 2rem;
}

.branch-list-three {
  grid-template-columns: 1fr;
}

.branch-list > div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  padding: 1rem;
  border: 1px solid var(--line);
  background: rgba(250, 250, 247, 0.62);
}

.branch-list span {
  display: grid;
  width: 1.45rem;
  height: 1.45rem;
  place-items: center;
  background: var(--ink);
  color: white;
  font-size: 0.54rem;
  font-weight: 800;
}

.branch-list p {
  display: grid;
  gap: 0.35rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.45;
}

.branch-list b {
  color: var(--ink);
  font-size: 0.78rem;
}

.detail-grid,
.delivery-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 2.2rem;
  border: solid var(--line);
  border-width: 1px 0 0 1px;
}

.detail-grid span,
.delivery-meta span {
  padding: 0.9rem 0.5rem;
  border: solid var(--line);
  border-width: 0 1px 1px 0;
  font-size: 0.55rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-align: center;
}

.delivery-meta {
  grid-template-columns: repeat(3, 1fr);
}

.chapter-emphasis {
  margin: 2rem 0 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--ink);
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.65;
}

.flow-return {
  display: flex;
  align-items: center;
  margin-top: 2.2rem;
  overflow: hidden;
}

.flow-return span {
  flex: 0 0 auto;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  font-size: 0.6rem;
  font-weight: 750;
}

.flow-return i {
  min-width: 1rem;
  height: 1px;
  flex: 1 1 auto;
  background: var(--mint-dark);
}

.process-chapter-decision {
  background: rgba(135, 217, 192, 0.055);
}

.process-chapter-conditional {
  background-image: repeating-linear-gradient(-45deg, transparent 0 9px, rgba(22, 24, 23, 0.018) 9px 10px);
}

.route-summary {
  padding: clamp(7rem, 13vw, 13rem) var(--gutter);
  background: #171918;
  color: #f4f4f0;
}

.route-summary-heading {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 2rem clamp(2rem, 7vw, 8rem);
  align-items: end;
}

.route-summary-heading .eyebrow {
  grid-column: 1 / -1;
  color: var(--mint);
}

.route-summary-heading h2 {
  margin: 0;
  font-size: clamp(3rem, 6.8vw, 7.5rem);
  font-weight: 600;
  letter-spacing: -0.07em;
  line-height: 0.96;
}

.route-summary-heading > p:last-child {
  margin: 0;
  color: rgba(244, 244, 240, 0.64);
  font-size: clamp(0.9rem, 1.15vw, 1.08rem);
  line-height: 1.8;
  word-break: keep-all;
}

.route-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: clamp(4rem, 8vw, 8rem);
  border: solid rgba(255, 255, 255, 0.2);
  border-width: 1px 0 0 1px;
}

.route-cards article {
  min-height: 28rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  border: solid rgba(255, 255, 255, 0.2);
  border-width: 0 1px 1px 0;
  transition: background-color 260ms ease, color 260ms ease;
}

.route-cards article:hover {
  background: var(--mint);
  color: var(--ink);
}

.route-cards article > span {
  color: var(--mint);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.route-cards article:hover > span {
  color: var(--mint-dark);
}

.route-cards h3 {
  margin: 3.2rem 0 0;
  font-size: clamp(1.6rem, 2.5vw, 2.7rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.12;
}

.route-cards p {
  min-height: 4.5rem;
  margin: 1.2rem 0 0;
  color: rgba(244, 244, 240, 0.58);
  font-size: 0.78rem;
  line-height: 1.7;
}

.route-cards article:hover p {
  color: rgba(22, 24, 23, 0.68);
}

.route-cards ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 3rem 0 0;
  padding: 0;
  list-style: none;
}

.route-cards li {
  padding: 0.45rem 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.24);
  font-size: 0.58rem;
}

.route-cards article:hover li {
  border-color: rgba(22, 24, 23, 0.28);
}

.process-cta {
  display: grid;
  min-height: 82svh;
  align-content: center;
  justify-items: start;
  padding: 7rem var(--gutter);
}

.process-cta h2 {
  margin: 1.7rem 0 0;
  font-size: clamp(3rem, 7.2vw, 8rem);
  font-weight: 600;
  letter-spacing: -0.075em;
  line-height: 0.98;
}

.process-cta > a {
  display: flex;
  width: min(100%, 34rem);
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(3rem, 6vw, 6rem);
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--ink);
  font-size: clamp(0.92rem, 1.3vw, 1.12rem);
  font-weight: 750;
}

.process-cta > a i {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  background: var(--ink);
  color: white;
  font-style: normal;
  transition: transform 220ms ease;
}

.process-cta > a:hover i,
.process-cta > a:focus-visible i {
  transform: translate(0.25rem, -0.25rem);
}

.process-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 2rem;
  padding: 2rem var(--gutter);
  border-top: 1px solid var(--line);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
}

.process-footer p {
  margin: 0;
  color: var(--muted);
}

.process-footer a {
  font-weight: 750;
}

@media (max-width: 980px) {
  :root { --header-height: 4.5rem; }

  .process-story {
    display: block;
  }

  .process-visual-column {
    position: sticky;
    top: var(--header-height);
    z-index: 10;
    height: 42svh;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(244, 244, 240, 0.96);
    backdrop-filter: blur(14px);
  }

  .process-visual-sticky {
    position: relative;
    top: auto;
    height: 100%;
    grid-template-columns: minmax(0, 1fr) minmax(12rem, 0.76fr);
    grid-template-rows: auto 1fr auto;
    gap: 0.5rem 1rem;
    padding: 0.8rem var(--gutter);
  }

  .visual-status {
    grid-column: 1;
  }

  .process-canvas-shell {
    grid-column: 2;
    grid-row: 1 / 4;
    width: min(100%, 20rem);
    max-height: 38svh;
  }

  .visual-legend {
    grid-column: 1;
    justify-content: flex-start;
  }

  .process-mini-map {
    grid-column: 1;
    margin-top: 0;
  }

  .process-chapter {
    min-height: 86svh;
    padding-top: calc(42svh + 4rem);
    margin-top: -42svh;
    scroll-margin-top: var(--header-height);
  }

  .route-summary-heading {
    grid-template-columns: 1fr;
  }

  .route-cards {
    grid-template-columns: 1fr;
  }

  .route-cards article {
    min-height: 0;
  }
}

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

  .process-brand strong,
  .process-header nav a:first-child,
  .process-header nav a:nth-child(2) {
    display: none;
  }

  .process-header nav {
    margin-left: auto;
  }

  .process-hero {
    padding-inline: 1.1rem;
  }

  .process-hero h1 {
    font-size: clamp(3.6rem, 17vw, 6rem);
  }

  .process-hero-meta {
    position: static;
    margin-top: 3rem;
  }

  .scroll-cue {
    display: none;
  }

  .process-visual-column {
    height: 39svh;
  }

  .process-visual-sticky {
    grid-template-columns: 1fr minmax(8.8rem, 0.85fr);
    padding-inline: 0.85rem;
  }

  .visual-status {
    gap: 0.55rem;
    padding-bottom: 0.55rem;
  }

  .visual-status > span {
    font-size: 1.3rem;
  }

  .visual-status strong {
    font-size: 0.76rem;
  }

  .visual-status b,
  .visual-status em {
    font-size: 0.48rem;
  }

  .visual-legend {
    gap: 0.35rem 0.7rem;
    font-size: 0.49rem;
  }

  .process-mini-map {
    gap: 0.18rem;
  }

  .process-mini-map button {
    height: 0.8rem;
  }

  .process-chapter {
    min-height: 92svh;
    margin-top: -39svh;
    padding: calc(39svh + 3.5rem) 1.1rem 4.5rem;
  }

  .chapter-card {
    grid-template-columns: auto 1fr;
    gap: 1rem;
  }

  .chapter-copy h2 {
    font-size: clamp(2rem, 10vw, 3.2rem);
  }

  .chapter-copy > p:not(.chapter-kicker, .chapter-emphasis) {
    font-size: 0.92rem;
  }

  .chapter-facts-compact {
    grid-template-columns: 1fr;
  }

  .branch-list {
    grid-template-columns: 1fr;
  }

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

  .flow-return {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .flow-return i {
    width: 1px;
    height: 0.6rem;
    justify-self: center;
  }

  .route-summary,
  .process-cta {
    padding-inline: 1.1rem;
  }

  .route-summary-heading h2,
  .process-cta h2 {
    font-size: clamp(2.8rem, 13.5vw, 5rem);
  }

  .route-cards article {
    padding: 1.5rem;
  }

  .process-footer {
    grid-template-columns: 1fr auto;
    padding-inline: 1.1rem;
  }

  .process-footer p {
    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;
  }
}