:root {
  color-scheme: light;
  --paper: #fff;
  --soft: #f0f0ed;
  --ink: #090a0b;
  --impact: #ed006f;
  --signal: #ffd51a;
  --line: rgba(9, 10, 11, 0.22);
  --header-h: clamp(4.5rem, 7vw, 6rem);
  font-family: Arial, Helvetica, sans-serif;
  font-synthesis: none;
  text-rendering: geometricPrecision;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: clip;
  scroll-behavior: smooth;
}

body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
}

[lang="zh-CN"] {
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

body[data-lang="en"] [data-lang-panel="zh"],
body[data-lang="zh"] [data-lang-panel="en"] {
  display: none !important;
}

a {
  color: inherit;
}

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

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

h1,
h2,
h3,
p,
dl,
dd {
  margin-top: 0;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 1rem;
  left: 1rem;
  padding: 0.75rem 1rem;
  background: var(--signal);
  color: var(--ink);
  font-weight: 900;
  transform: translateY(-180%);
}

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

.about-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 clamp(1.1rem, 3vw, 3.25rem);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
}

.back-link {
  justify-self: start;
  font-size: 0.72rem;
  font-weight: 950;
  letter-spacing: 0.1em;
  text-decoration: none;
}

.wordmark {
  display: grid;
  justify-items: center;
  font-style: italic;
  line-height: 0.76;
  text-decoration: none;
  transform: skewX(-5deg);
}

.wordmark span {
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  font-weight: 950;
  letter-spacing: -0.075em;
}

.wordmark small {
  margin-top: 0.38rem;
  font-size: 0.62rem;
  font-weight: 900;
  letter-spacing: 0.29em;
}

.language-switch {
  justify-self: end;
  display: flex;
  align-items: center;
  border-bottom: 2px solid var(--ink);
}

.language-switch button {
  min-width: 2.8rem;
  padding: 0.55rem 0.4rem 0.45rem;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 950;
}

.language-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: #fff;
}

.positioning,
.work,
.audience,
.direction,
.partner {
  padding: clamp(4.5rem, 8vw, 8rem) clamp(1.25rem, 4vw, 4.5rem);
}

.positioning {
  min-height: calc(90svh - var(--header-h));
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.75fr);
  gap: clamp(3rem, 7vw, 9rem);
  align-items: end;
  background: var(--ink);
  color: #fff;
}

.positioning h1,
.section-lead h2,
.audience > h2,
.partner h2 {
  margin-bottom: 0;
  font-weight: 950;
  letter-spacing: -0.085em;
  line-height: 0.76;
  text-wrap: balance;
}

.positioning h1 {
  max-width: none;
  font-size: clamp(3.9rem, 7vw, 8.8rem);
}

[lang="it"] .positioning h1 {
  font-size: clamp(3.7rem, 6.4vw, 8rem);
}

.positioning__statement {
  min-width: 0;
}

.positioning__mark {
  width: clamp(6.5rem, 8.5vw, 9rem);
  aspect-ratio: 1.15;
  margin-bottom: clamp(1.25rem, 2.5vw, 2.5rem);
  overflow: hidden;
}

.positioning__mark img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.72;
  filter: invert(1);
  mix-blend-mode: screen;
  transform: translateY(-13.5%);
}

.positioning h1 > span,
.positioning h1 > em {
  display: block;
  white-space: nowrap;
}

.positioning h1 em,
.section-lead h2 em,
.audience h2 em,
.partner h2 em {
  color: var(--impact);
  font-style: italic;
}

.positioning__copy {
  max-width: 32rem;
}

.positioning__copy p {
  margin-bottom: 1.25rem;
  font-size: clamp(1.2rem, 1.85vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.positioning__copy p:last-child {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: clamp(1rem, 1.25vw, 1.25rem);
  font-weight: 500;
  line-height: 1.42;
}

.entity-name {
  font-weight: 900;
  text-decoration: underline;
  text-decoration-color: var(--impact);
  text-decoration-thickness: 0.11em;
  text-underline-offset: 0.14em;
}

.section-lead {
  display: grid;
  grid-template-columns: minmax(20rem, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(3rem, 8vw, 10rem);
  align-items: end;
  margin-bottom: clamp(3rem, 7vw, 7rem);
}

.work .section-lead {
  display: block;
}

.section-lead h2,
.audience > h2,
.partner h2 {
  font-size: clamp(3.7rem, 7vw, 7.5rem);
}

.section-lead > p {
  max-width: 36ch;
  margin: 0;
  font-size: clamp(1.2rem, 1.8vw, 1.8rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.work-list,
.direction-list {
  margin: 0;
  border-top: 3px solid var(--ink);
}

.work-list > div,
.direction-list > p {
  display: grid;
  grid-template-columns: minmax(14rem, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(2rem, 6vw, 8rem);
  padding: clamp(1.8rem, 3.5vw, 3.5rem) 0;
  border-bottom: 1px solid var(--line);
}

.work-list dt {
  font-size: clamp(1.45rem, 2.4vw, 2.6rem);
  font-weight: 950;
  letter-spacing: -0.05em;
  line-height: 0.96;
}

.work-list dd,
.direction-list p {
  max-width: 44rem;
  margin-bottom: 0;
  font-size: clamp(1rem, 1.3vw, 1.28rem);
  line-height: 1.45;
}

.work-list dd {
  margin-left: 0;
}

.audience {
  background: var(--soft);
}

.audience > h2 {
  max-width: 10ch;
  margin-bottom: clamp(3.5rem, 7vw, 7rem);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 5vw, 6rem);
}

.audience-grid article {
  padding: clamp(2rem, 4vw, 4rem) 0 0;
  border-top: clamp(0.45rem, 0.75vw, 0.75rem) solid var(--ink);
}

.audience-grid .audience-grid__industry {
  border-top-color: var(--impact);
}

.audience-grid h3 {
  margin-bottom: clamp(1.5rem, 3vw, 3rem);
  font-size: clamp(1.8rem, 3vw, 3.5rem);
  font-weight: 950;
  letter-spacing: -0.055em;
}

.audience-grid p {
  max-width: 34rem;
  margin-bottom: 0;
  font-size: clamp(1.05rem, 1.45vw, 1.45rem);
  line-height: 1.42;
}

.direction-list > p {
  max-width: none;
  min-height: clamp(9rem, 10vw, 11rem);
  display: flex;
  align-items: flex-end;
  margin: 0;
  padding: clamp(1.75rem, 3vw, 3rem) clamp(1.5rem, 4vw, 4.5rem);
  font-size: clamp(1.2rem, 2vw, 2rem);
  font-weight: 850;
  letter-spacing: -0.025em;
  line-height: 1.18;
}

.direction-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.direction-list > p:nth-child(odd) {
  padding-left: 0;
}

.direction-list > p:nth-child(even) {
  border-left: 1px solid var(--line);
}

.partner {
  display: grid;
  grid-template-columns: minmax(20rem, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(4rem, 9vw, 11rem);
  align-items: end;
  background: var(--signal);
}

.partner h2 {
  max-width: 10ch;
}

.partner h2 > span,
.partner h2 > em {
  display: block;
  white-space: nowrap;
}

.partner h2 > span {
  font-size: 0.72em;
}

.partner h2 em {
  color: var(--impact);
  font-size: 0.62em;
  white-space: nowrap;
}

.partner > div > p {
  max-width: 42rem;
  margin-bottom: 1.2rem;
  font-size: clamp(1.1rem, 1.55vw, 1.55rem);
  line-height: 1.38;
}

.partner__status {
  display: block;
  margin-top: clamp(2.5rem, 5vw, 5rem);
  padding-top: 1.2rem;
  border-top: 3px solid var(--ink);
  font-size: clamp(0.72rem, 0.9vw, 0.9rem);
  letter-spacing: 0.08em;
  line-height: 1.35;
}

.partner__next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding: clamp(1.2rem, 2vw, 1.8rem);
  background: var(--ink);
  color: #fff;
  font-size: clamp(1.15rem, 1.8vw, 1.8rem);
  font-weight: 950;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.partner__next:hover,
.partner__next:focus-visible {
  background: var(--impact);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: center;
  padding: 2rem clamp(1.25rem, 4vw, 4.5rem);
  background: var(--ink);
  color: #fff;
}

footer a,
footer p {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.zh-title {
  letter-spacing: -0.07em !important;
  line-height: 0.95 !important;
}

[lang="zh-CN"] .positioning h1 {
  max-width: none;
  font-size: clamp(3.5rem, 7.3vw, 8rem);
}

[lang="zh-CN"] .work-list dt,
[lang="zh-CN"] .audience-grid h3 {
  letter-spacing: -0.035em;
}

@media (max-width: 820px) {
  .about-header {
    grid-template-columns: 1fr auto 1fr;
    padding-inline: 1rem;
  }

  .back-link {
    font-size: 0.62rem;
  }

  .wordmark span {
    font-size: 1.35rem;
  }

  .wordmark small {
    font-size: 0.52rem;
  }

  .language-switch button {
    min-width: 2.25rem;
    font-size: 0.62rem;
  }

  .positioning,
  .work,
  .audience,
  .direction,
  .partner {
    padding: 4.5rem 1.25rem;
  }

  .positioning,
  .section-lead,
  .partner {
    grid-template-columns: 1fr;
  }

  .positioning {
    min-height: calc(100svh - var(--header-h));
    gap: 4rem;
    align-content: space-between;
  }

  .positioning h1 {
    font-size: clamp(2.9rem, 13.7vw, 5.2rem);
  }

  [lang="zh-CN"] .positioning h1 {
    font-size: clamp(3rem, 13.5vw, 5.2rem);
  }

  .positioning__copy {
    max-width: 100%;
  }

  .section-lead {
    gap: 2.5rem;
  }

  .section-lead h2,
  .audience > h2,
  .partner h2 {
    font-size: clamp(3.25rem, 14vw, 5.2rem);
  }

  .work-list > div {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .audience-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .direction-list > p {
    min-height: auto;
    padding: 2rem 0;
    border-left: 0;
  }

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

  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

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