:root {
  --bg: #eff2ec;
  --ink: #151a17;
  --paper: #ffffff;
  --cobalt: #2e7ecb;
  --orange: #ff5d3a;
  --lime: #d9f05b;
  --mint: #b8f2d0;
  --muted: #5e665f;
  --line: rgba(21, 26, 23, 0.28);
  --display: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Arial Black",
    sans-serif;
  --body: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Aptos, "Segoe UI",
    sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --page-pad: clamp(1rem, 3.5vw, 4rem);
  --section-space: clamp(5rem, 10vw, 10rem);
  --radius-core: 28px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
}

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

button {
  color: inherit;
  font: inherit;
}

svg {
  display: block;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-180%);
}

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

.demo-note {
  padding: 0.45rem var(--page-pad);
  color: var(--paper);
  background: var(--ink);
}

.demo-note p {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.025em;
  text-align: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
  padding: 0 var(--page-pad);
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.wordmark {
  position: relative;
  z-index: 2;
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: -0.055em;
  text-decoration: none;
}

.wordmark span {
  color: var(--orange);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.site-nav a {
  position: relative;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
}

.site-nav a:not(.nav-contact)::after {
  position: absolute;
  right: 0;
  bottom: -0.28rem;
  left: 0;
  height: 2px;
  background: var(--orange);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:not(.nav-contact):hover::after,
.site-nav a:not(.nav-contact):focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-contact {
  padding: 0.5rem 0.9rem;
  color: var(--paper);
  background: var(--ink);
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.menu-toggle__label {
  font-size: 0.84rem;
  font-weight: 650;
}

.menu-toggle__icon,
.menu-toggle__icon::before {
  display: block;
  width: 1.2rem;
  height: 2px;
  background: currentColor;
  content: "";
  transition:
    transform 180ms ease,
    top 180ms ease;
}

.menu-toggle__icon {
  position: relative;
}

.menu-toggle__icon::before {
  position: absolute;
  top: -6px;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon {
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::before {
  top: 0;
  transform: rotate(90deg);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(20rem, 5fr);
  min-height: calc(100svh - 7.2rem);
  border-bottom: 1px solid var(--line);
}

.portrait-board {
  position: relative;
  min-height: 100%;
  overflow: hidden;
  background: var(--cobalt);
}

.portrait-board img {
  width: 100%;
  height: 100%;
  min-height: inherit;
  display: block;
  object-fit: cover;
  object-position: center 28%;
}

.portrait-board__interests {
  position: absolute;
  top: clamp(1rem, 2.5vw, 2rem);
  left: clamp(1rem, 2.5vw, 2rem);
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, clamp(2.9rem, 5vw, 4rem));
  gap: 0.45rem;
}

.portrait-board__interests span {
  display: grid;
  width: clamp(2.9rem, 5vw, 4rem);
  aspect-ratio: 1;
  place-items: center;
  color: var(--ink);
  background: var(--lime);
  border: 2px solid var(--ink);
  font-family: var(--display);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  font-weight: 900;
}

.portrait-board__interests span:nth-child(2) {
  background: var(--orange);
}

.portrait-board__interests span:nth-child(3) {
  background: var(--mint);
}

.portrait-board__interests span:nth-child(4) {
  color: var(--paper);
  background: var(--ink);
}

.portrait-board__caption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem clamp(1rem, 2.5vw, 2rem);
  color: var(--paper);
  background: var(--ink);
}

.portrait-board__caption strong {
  font-family: var(--display);
  font-size: clamp(1.4rem, 2.5vw, 2.2rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.portrait-board__caption span {
  max-width: 11rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
  line-height: 1.4;
  text-align: right;
}

.hero__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(4rem, 8vw, 7.5rem) var(--page-pad);
}

.hero h1 {
  max-width: 8.8ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.6rem, 8.6vw, 9.5rem);
  font-weight: 900;
  line-height: 0.82;
  letter-spacing: -0.075em;
  text-transform: uppercase;
}

.hero h1 span {
  display: block;
}

.hero h1 span:nth-child(2) {
  padding-left: clamp(0.5rem, 6vw, 5.5rem);
}

.hero__accent {
  width: fit-content;
  margin-top: 0.08em;
  padding: 0.01em 0.12em 0.08em 0.05em;
  color: var(--paper);
  background: var(--orange);
}

.hero__intro {
  max-width: 40rem;
  margin: clamp(2rem, 4vw, 3.5rem) 0 0;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.7vw, 1.45rem);
  line-height: 1.55;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2.2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  min-height: 3.2rem;
  padding: 0.8rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid var(--ink);
  transition:
    background-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.button svg {
  width: 1.2rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 1.7;
}

.button:hover,
.button:focus-visible {
  transform: translate(-2px, -2px);
}

.button--solid {
  color: var(--paper);
  background: var(--ink);
}

.button--solid:hover,
.button--solid:focus-visible {
  color: var(--ink);
  background: var(--lime);
}

.text-link {
  font-weight: 650;
  text-underline-offset: 0.25em;
  text-decoration-thickness: 2px;
}

.process-board {
  position: relative;
  display: flex;
  min-height: 100%;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: clamp(1.5rem, 3vw, 2.6rem);
  color: var(--paper);
  background: var(--cobalt);
}

.process-board::after {
  position: absolute;
  top: 18%;
  right: -15%;
  width: 52%;
  aspect-ratio: 1;
  border: 2px solid rgba(255, 255, 255, 0.34);
  border-radius: 50%;
  content: "";
}

.process-board__title,
.process-board__output {
  position: relative;
  z-index: 2;
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
}

.process-board__title {
  align-self: flex-start;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--lime);
}

.process-route {
  position: absolute;
  inset: 12% 8% 7% 5%;
  width: 87%;
  height: 81%;
  overflow: visible;
}

.process-route circle {
  fill: var(--lime);
  stroke: var(--cobalt);
  stroke-width: 5px;
}

.process-route__line {
  fill: none;
  stroke: rgba(255, 255, 255, 0.8);
  stroke-width: 3px;
  stroke-dasharray: 850;
  stroke-dashoffset: 850;
  animation: route-draw 1.2s 280ms cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

.process-list {
  position: relative;
  z-index: 2;
  display: grid;
  gap: clamp(3.2rem, 8vh, 6rem);
  margin: 5.5rem 0 3rem;
  padding: 0 0 0 4rem;
  list-style: none;
}

.process-list li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 1rem;
  align-items: start;
}

.process-list__number {
  color: var(--lime);
  font-family: var(--serif);
  font-size: 0.9rem;
  font-style: italic;
}

.process-list strong {
  display: block;
  margin-bottom: 0.15rem;
  font-family: var(--display);
  font-size: clamp(1.4rem, 2vw, 1.85rem);
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.process-list small {
  display: block;
  max-width: 20rem;
  color: rgba(255, 255, 255, 0.77);
  font-size: 0.84rem;
  line-height: 1.45;
}

.process-board__output {
  align-self: stretch;
  padding-top: 0.9rem;
  border-top: 2px solid rgba(255, 255, 255, 0.62);
  font-family: var(--serif);
  font-size: clamp(1rem, 1.8vw, 1.35rem);
  font-style: italic;
  font-weight: 400;
}

.section {
  padding: var(--section-space) var(--page-pad);
}

.section-kicker {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: clamp(2rem, 5vw, 4.5rem);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
}

.section-kicker__rule {
  width: min(9rem, 18vw);
  height: 1px;
  background: var(--line);
}

.about {
  background: var(--paper);
}

.about__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.5rem;
}

.about h2 {
  grid-column: 1 / span 8;
  max-width: 12ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.7rem, 5.4vw, 6rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.about__body {
  grid-column: 9 / span 4;
  align-self: end;
  padding-bottom: 0.5rem;
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.55vw, 1.35rem);
  line-height: 1.6;
}

.about__body p {
  margin: 0;
}

.about__note {
  margin-top: 1.5rem !important;
  color: var(--muted);
  font-family: var(--body);
  font-size: 0.8rem;
}

.capability-list {
  grid-column: 7 / span 6;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: clamp(2rem, 6vw, 5rem) 0 0;
  padding: 0;
  border-top: 2px solid var(--ink);
  list-style: none;
}

.capability-list li {
  min-height: 8rem;
  padding: 1rem 1rem 0 0;
}

.capability-list li + li {
  padding-left: 1rem;
  border-left: 1px solid var(--line);
}

.capability-list span {
  display: block;
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.capability-list small {
  display: block;
  max-width: 12rem;
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.work {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.work__header {
  display: grid;
  grid-template-columns: minmax(0, 8fr) minmax(16rem, 4fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.work__header .section-kicker {
  margin-bottom: 1.8rem;
}

.work h2,
.approach h2,
.contact h2 {
  max-width: 13ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.7rem, 5.7vw, 6.8rem);
  line-height: 0.93;
  letter-spacing: -0.065em;
  text-transform: uppercase;
}

.work__header > p {
  max-width: 29rem;
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.6;
  border-left: 2px solid var(--orange);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.case {
  overflow: hidden;
  background: var(--paper);
  border: 2px solid var(--ink);
}

.case--lead {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(15rem, 4fr) minmax(0, 8fr);
}

.case--fieldnote,
.case--afterlight {
  grid-column: span 6;
}

.case__summary {
  display: flex;
  min-height: 12.5rem;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.4rem, 3vw, 2.5rem);
}

.case--lead .case__summary {
  min-height: 31rem;
}

.case__label {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.case h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.3rem, 4.2vw, 4.7rem);
  line-height: 0.9;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.case--fieldnote h3,
.case--afterlight h3 {
  font-size: clamp(2rem, 3.2vw, 3.4rem);
}

.case__role {
  max-width: 23rem;
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 0.98rem;
  line-height: 1.45;
}

.case__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-height: 2.75rem;
  padding: 0.55rem 0;
  background: transparent;
  border: 0;
  border-bottom: 2px solid var(--ink);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
}

.case__toggle-icon {
  position: relative;
  width: 0.8rem;
  height: 0.8rem;
}

.case__toggle-icon::before,
.case__toggle-icon::after {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  content: "";
  transition: transform 160ms ease;
}

.case__toggle-icon::after {
  transform: rotate(90deg);
}

.case__toggle[aria-expanded="true"] .case__toggle-icon::after {
  transform: rotate(0deg);
}

.morrow-art {
  position: relative;
  display: flex;
  min-height: 31rem;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: clamp(1.4rem, 3vw, 2.5rem);
  background: var(--orange);
  border-left: 2px solid var(--ink);
}

.morrow-art__caption {
  position: relative;
  z-index: 2;
  margin: 0;
  font-size: 0.74rem;
  font-weight: 700;
}

.morrow-art__timeline {
  position: absolute;
  top: 25%;
  right: 7%;
  left: 7%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}

.morrow-art__timeline span {
  height: 1px;
  background: rgba(21, 26, 23, 0.45);
}

.morrow-art__schedule {
  position: relative;
  width: 74%;
  margin: auto;
  aspect-ratio: 1.65;
  border: 2px solid var(--ink);
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent calc(25% - 1px),
      rgba(21, 26, 23, 0.35) calc(25% - 1px),
      rgba(21, 26, 23, 0.35) 25%
    ),
    var(--lime);
}

.morrow-art__block {
  position: absolute;
  border: 2px solid var(--ink);
  background: var(--paper);
}

.morrow-art__block--one {
  top: 14%;
  left: 4%;
  width: 34%;
  height: 31%;
}

.morrow-art__block--two {
  top: 38%;
  left: 46%;
  width: 22%;
  height: 48%;
  background: var(--cobalt);
}

.morrow-art__block--three {
  top: 58%;
  left: 72%;
  width: 21%;
  height: 25%;
  background: var(--orange);
}

.morrow-art__idea {
  position: relative;
  z-index: 2;
  max-width: 16ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
  text-transform: uppercase;
}

.fieldnote-art,
.afterlight-art {
  min-height: 23rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-top: 2px solid var(--ink);
}

.fieldnote-art {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-content: start;
  background: var(--lime);
}

.fieldnote-art > p {
  margin: 0 0 0.35rem;
  font-family: var(--serif);
  font-size: 0.88rem;
  font-style: italic;
}

.fieldnote-art__note {
  display: grid;
  gap: 0.45rem;
  min-height: 6.5rem;
  padding: 1rem;
  background: var(--paper);
  border: 2px solid var(--ink);
}

.fieldnote-art__note span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--ink);
}

.fieldnote-art__note span:nth-child(2) {
  width: 77%;
}

.fieldnote-art__note span:nth-child(3) {
  width: 51%;
}

.fieldnote-art__note--short {
  min-height: 5rem;
  background: var(--cobalt);
}

.fieldnote-art__note--short span {
  background: var(--paper);
}

.fieldnote-art strong {
  grid-column: 1 / -1;
  align-self: end;
  max-width: 12ch;
  margin-top: 2rem;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 3.3rem);
  line-height: 0.94;
  letter-spacing: -0.055em;
  text-transform: uppercase;
}

.afterlight-art {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  color: var(--paper);
  background: var(--ink);
}

.afterlight-art__letter {
  position: absolute;
  top: -0.25em;
  right: -0.02em;
  color: var(--cobalt);
  font-family: var(--display);
  font-size: clamp(12rem, 24vw, 26rem);
  line-height: 1;
  letter-spacing: -0.1em;
}

.afterlight-art__copy {
  position: absolute;
  top: 20%;
  left: 8%;
  display: grid;
  gap: 0.55rem;
  width: 37%;
}

.afterlight-art__copy span {
  display: block;
  height: 3px;
  background: rgba(255, 255, 255, 0.75);
}

.afterlight-art__copy span:nth-child(2) {
  width: 80%;
}

.afterlight-art__copy span:nth-child(3) {
  width: 58%;
}

.afterlight-art > p {
  position: relative;
  z-index: 2;
  max-width: 12ch;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.6vw, 2.5rem);
  font-style: italic;
  line-height: 1.1;
}

.case__details {
  padding: clamp(1.4rem, 3vw, 2.4rem);
  background: var(--paper);
  border-top: 2px solid var(--ink);
}

.case--lead .case__details {
  grid-column: 1 / -1;
}

.case__details > p {
  max-width: 48rem;
  margin: 0 0 1.8rem;
  font-family: var(--serif);
  font-size: 1.1rem;
  line-height: 1.6;
}

.case__details dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
}

.case__details dl div {
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.case__details dt {
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.case__details dd {
  margin: 0;
  font-size: 0.95rem;
}

.approach {
  color: var(--paper);
  background: var(--ink);
}

.approach .section-kicker {
  color: rgba(255, 255, 255, 0.6);
}

.approach .section-kicker__rule {
  background: rgba(255, 255, 255, 0.24);
}

.approach__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.approach h2 {
  max-width: 9ch;
}

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

.principle-list li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  column-gap: 1rem;
  padding: 1.2rem 0 1.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.principle-list__rule {
  grid-row: 1 / span 2;
  width: 2px;
  height: 100%;
  background: var(--orange);
}

.principle-list h3 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.1rem, 1.7vw, 1.45rem);
  line-height: 1.2;
}

.principle-list p {
  max-width: 35rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  font-family: var(--serif);
  line-height: 1.55;
}

.contact {
  position: relative;
  overflow: hidden;
  background: var(--orange);
}

.contact__top {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(18rem, 4fr);
  gap: 3rem;
  padding: var(--section-space) var(--page-pad) clamp(3rem, 6vw, 5rem);
}

.contact h2 {
  max-width: 9ch;
}

.contact__top > div:first-child > p {
  max-width: 34rem;
  margin: 1.7rem 0 0;
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.55;
}

.contact__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  gap: 1rem;
}

.button--lime {
  gap: 1.5rem;
  color: var(--ink);
  background: var(--lime);
}

.button--lime:hover,
.button--lime:focus-visible {
  color: var(--paper);
  background: var(--ink);
}

.contact__actions p {
  margin: 0;
  font-size: 0.8rem;
}

.contact__wordmark {
  width: 100%;
  margin: 0;
  overflow: hidden;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(9rem, 27.7vw, 31rem);
  line-height: 0.69;
  letter-spacing: -0.095em;
  white-space: nowrap;
}

.contact__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.2rem var(--page-pad) 1.5rem;
  border-top: 2px solid var(--ink);
}

.contact__footer p {
  margin: 0;
  font-size: 0.78rem;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
}

.back-to-top svg {
  width: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-width: 1.8;
}

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

@keyframes route-draw {
  to {
    stroke-dashoffset: 0;
  }
}

@media (max-width: 1000px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero__copy {
    min-height: 70svh;
  }

  .process-board {
    min-height: 42rem;
  }

  .portrait-board {
    min-height: 46rem;
  }

  .portrait-board img {
    object-position: center 24%;
  }

  .about h2 {
    grid-column: 1 / span 7;
  }

  .about__body {
    grid-column: 8 / span 5;
  }

  .capability-list {
    grid-column: 6 / span 7;
  }

  .work__header {
    grid-template-columns: minmax(0, 7fr) minmax(15rem, 5fr);
  }

  .case--lead {
    grid-template-columns: minmax(15rem, 5fr) minmax(0, 7fr);
  }

  .approach__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
    gap: 3.5rem;
  }
}

@media (max-width: 760px) {
  .site-header {
    min-height: 4rem;
  }

  .menu-toggle {
    display: inline-flex;
    z-index: 2;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1.2rem;
    padding: 5rem var(--page-pad);
    color: var(--paper);
    background: var(--ink);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-1rem);
    transition:
      opacity 180ms ease,
      transform 180ms ease,
      visibility 180ms ease;
  }

  .site-nav a {
    font-family: var(--display);
    font-size: clamp(2.3rem, 12vw, 4.5rem);
    line-height: 0.95;
    letter-spacing: -0.06em;
    text-transform: uppercase;
  }

  .site-nav .nav-contact {
    padding: 0;
    color: var(--lime);
    background: transparent;
  }

  .menu-open .site-nav {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .menu-open .site-header {
    color: var(--paper);
    background: var(--ink);
    border-bottom-color: rgba(255, 255, 255, 0.18);
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(3.4rem, 16.6vw, 6.2rem);
  }

  .hero h1 span:nth-child(2) {
    padding-left: 0;
  }

  .hero__intro {
    max-width: 31rem;
  }

  .process-board {
    min-height: 38rem;
  }

  .portrait-board {
    min-height: 44rem;
  }

  .about__grid,
  .work__header,
  .approach__grid,
  .contact__top {
    grid-template-columns: 1fr;
  }

  .about h2,
  .about__body,
  .capability-list {
    grid-column: auto;
  }

  .about__body {
    max-width: 37rem;
  }

  .capability-list {
    margin-top: 2rem;
    grid-template-columns: 1fr;
  }

  .capability-list li {
    min-height: 0;
    padding: 1rem 0;
  }

  .capability-list li + li {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .work__header > p {
    max-width: 33rem;
  }

  .case--lead,
  .case--fieldnote,
  .case--afterlight {
    grid-column: 1 / -1;
  }

  .case--lead {
    display: block;
  }

  .case--lead .case__summary {
    min-height: 17rem;
  }

  .morrow-art {
    min-height: 27rem;
    border-top: 2px solid var(--ink);
    border-left: 0;
  }

  .case__details dl {
    grid-template-columns: 1fr;
  }

  .approach__grid {
    gap: 3rem;
  }

  .contact__top {
    gap: 3rem;
  }

  .contact__actions {
    align-items: flex-start;
  }

  .contact__wordmark {
    font-size: 27.3vw;
    line-height: 0.72;
  }
}

@media (max-width: 480px) {
  .demo-note p {
    font-size: 0.66rem;
  }

  .hero__copy {
    min-height: 66svh;
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .hero h1 {
    font-size: clamp(3rem, 16.4vw, 4.6rem);
  }

  .hero__actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .button {
    min-height: 3rem;
  }

  .process-board {
    min-height: 36rem;
    padding: 1.25rem;
  }

  .portrait-board {
    min-height: 37rem;
  }

  .portrait-board__caption {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.35rem;
  }

  .portrait-board__caption span {
    max-width: none;
    text-align: left;
  }

  .process-list {
    gap: 3.2rem;
    margin-top: 5rem;
    padding-left: 2.8rem;
  }

  .process-list li {
    grid-template-columns: 1.5rem 1fr;
    gap: 0.75rem;
  }

  .process-route {
    inset: 13% 6% 8% 2%;
    width: 90%;
  }

  .section {
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }

  .about h2,
  .work h2,
  .approach h2,
  .contact h2 {
    font-size: clamp(2.5rem, 12vw, 4rem);
  }

  .case__summary {
    min-height: 11.5rem;
  }

  .fieldnote-art,
  .afterlight-art {
    min-height: 20rem;
  }

  .contact__top {
    padding-top: 4.5rem;
  }

  .contact__footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .process-route__line {
    stroke-dashoffset: 0;
  }
}