:root {
  --font-brand-ui: Arial, "PingFang SC", "PingFang TC", "Microsoft YaHei", sans-serif;
  --font-brand-mono: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

body {
  font-family: var(--font-brand-ui);
}

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

html[lang="zh-Hant"] body,
html[lang="zh-TW"] body {
  font-family: "PingFang TC", "Microsoft JhengHei", "Microsoft YaHei", Arial, sans-serif;
}

html[lang="en"] body {
  font-family: Arial, Helvetica, sans-serif;
}

.brand {
  min-width: 0;
  letter-spacing: 0.02em;
}

.brand img {
  border-radius: 0;
  object-fit: contain;
}

.brand-wordmark {
  display: block;
  width: 210px !important;
  height: auto !important;
}

.header-en .nav {
  min-height: 88px;
}

.header-en .brand-wordmark {
  width: 320px !important;
}

.brand .brand-logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand-submark {
  display: block;
  width: 132px !important;
  height: auto !important;
  margin-top: 6px;
}

header {
  background: rgb(245 247 244 / 0.96);
}

.nav {
  min-height: 88px;
  height: auto;
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto auto auto;
  align-items: center;
  gap: 24px;
  justify-content: initial;
}

.brand {
  justify-self: start;
  gap: 12px;
}

.brand > span {
  white-space: nowrap;
  font-size: 16px;
}

nav {
  justify-self: center;
  gap: 30px;
  font-size: 15px;
  white-space: nowrap;
}

.languages {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 8px;
  height: 28px;
  white-space: nowrap;
}

.languages a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  line-height: 1;
  text-decoration: none;
}

.languages .active {
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.nav > .button {
  white-space: nowrap;
}

.brand small,
.languages,
footer,
.kicker,
.card i,
.quote span {
  font-family: var(--font-brand-mono);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 30px;
}

.section-head > p {
  max-width: 420px;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.case-studies {
  color: #e7e9e3;
  background: var(--ink);
}

.case-studies .section-head > p {
  color: #aab3a7;
}

.case-studies .kicker {
  color: #cbeaaf;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.case-card {
  min-height: 360px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  background: #172219;
  border: 1px solid #354238;
}

.case-number {
  color: #cbeaaf;
  font: 500 13px var(--font-brand-mono);
}

.case-card h3 {
  margin: 42px 0 14px;
  font-size: 25px;
}

.case-context {
  margin: 0;
  color: #b7c1b8;
  line-height: 1.75;
}

.case-card dl {
  margin: auto 0 0;
  padding-top: 20px;
}

.case-card dl > div {
  padding-top: 12px;
  border-top: 1px solid #354238;
}

.case-card dl > div + div {
  margin-top: 14px;
}

.case-card dt {
  color: #cbeaaf;
  font: 500 10px var(--font-brand-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.case-card dd {
  margin: 7px 0 0;
  color: #e0e7df;
  font-size: 14px;
  line-height: 1.6;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.method-grid article {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.method-grid article > span {
  color: #397d6b;
  font: 500 13px var(--font-brand-mono);
}

.method-grid h3 {
  margin: 34px 0 10px;
  font-size: 21px;
}

.method-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.fit {
  background: var(--mint);
}

.fit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.fit-grid article {
  padding: 24px;
  border: 1px solid #a9d2c3;
}

.fit-grid article > span {
  color: #337867;
  font: 500 13px var(--font-brand-mono);
}

.fit-grid h3 {
  margin: 38px 0 12px;
  font-size: 22px;
}

.fit-grid p {
  margin: 0;
  color: #52605a;
  line-height: 1.7;
}

.signals {
  color: #e7e9e3;
  background: #242c24;
}

.signals .section-head > p {
  color: #aab3a7;
}

.signals .kicker {
  color: #cbeaaf;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.signal-grid article {
  min-height: 190px;
  padding: 24px;
  border: 1px solid #465346;
}

.signal-grid article > span {
  color: #cbeaaf;
  font: 500 13px var(--font-brand-mono);
}

.signal-grid h3 {
  margin: 34px 0 12px;
  font-size: 21px;
}

.signal-grid p {
  margin: 0;
  color: #b7c1b8;
  line-height: 1.7;
}

.principles {
  background: #f5f7f4;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.principle-grid article {
  min-height: 210px;
  padding: 24px;
  border-top: 2px solid var(--ink);
}

.principle-grid article > span {
  color: #397d6b;
  font: 500 13px var(--font-brand-mono);
}

.principle-grid h3 {
  margin: 34px 0 12px;
  font-size: 20px;
}

.principle-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.guardrails {
  color: #e7e9e3;
  background: #172219;
}

.guardrails .section-head > p {
  color: #aab3a7;
}

.guardrails .kicker {
  color: #cbeaaf;
}

.guardrail-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.guardrail-grid article {
  min-height: 210px;
  padding: 24px;
  border: 1px solid #354238;
}

.guardrail-grid article > span {
  color: #cbeaaf;
  font: 500 13px var(--font-brand-mono);
}

.guardrail-grid h3 {
  margin: 34px 0 12px;
  font-size: 20px;
}

.guardrail-grid p {
  margin: 0;
  color: #b7c1b8;
  line-height: 1.7;
}

.engagements {
  background: #e7ece8;
}

.engagement-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.engagement-grid article {
  min-height: 250px;
  padding: 26px;
  background: #f5f7f4;
  border: 1px solid #bbc7c0;
}

.engagement-grid article > span {
  color: #397d6b;
  font: 500 13px var(--font-brand-mono);
}

.engagement-grid h3 {
  margin: 42px 0 12px;
  font-size: 23px;
}

.engagement-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.deliverables {
  background: #fff;
}

.deliverable-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.deliverable-grid article {
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--line);
}

.deliverable-grid article > span {
  color: #397d6b;
  font: 500 13px var(--font-brand-mono);
}

.deliverable-grid h3 {
  margin: 34px 0 12px;
  font-size: 20px;
}

.deliverable-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.faq {
  background: #e7ece8;
}

.faq-list {
  border-top: 1px solid #bbc7c0;
}

.faq-list details {
  border-bottom: 1px solid #bbc7c0;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 42px 22px 0;
  position: relative;
  font-size: 19px;
  font-weight: 700;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  color: #397d6b;
  font: 24px/1 var(--font-brand-mono);
}

.faq-list details[open] summary::after {
  content: "-";
}

.faq-list details p {
  max-width: 720px;
  margin: -4px 0 22px;
  color: var(--muted);
  line-height: 1.75;
}

.start-here {
  background: #dce8e1;
}

.contact .contact-form-wrap {
  display: block;
}

.brief-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.brief-grid article {
  min-height: 210px;
  padding: 24px;
  border: 1px solid #b4c9bc;
}

.brief-grid article > span {
  color: #337867;
  font: 500 13px var(--font-brand-mono);
}

.brief-grid h3 {
  margin: 34px 0 12px;
  font-size: 20px;
}

.brief-grid p {
  margin: 0;
  color: #405149;
  line-height: 1.7;
}

h1,
h2,
h3 {
  letter-spacing: -0.025em;
}

@media (max-width: 760px) {
  .nav {
    min-height: 72px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .header-en .nav {
    min-height: 72px;
  }

  .brand-wordmark {
    width: 170px !important;
  }

  .header-en .brand-wordmark {
    width: 240px !important;
  }

  .brand .brand-logo {
    width: 32px;
    height: 32px;
  }

  .brand-submark {
    width: 118px !important;
    margin-top: 4px;
  }

  .brand > span {
    font-size: 14px;
  }

  .nav > .button {
    padding: 10px 13px;
    font-size: 12px;
  }

  .section-head {
    display: block;
  }

  .section-head > p {
    margin-top: 20px;
  }

  .case-grid,
  .method-grid,
  .deliverable-grid,
  .fit-grid,
  .signal-grid,
  .principle-grid,
  .guardrail-grid,
  .engagement-grid,
  .brief-grid {
    grid-template-columns: 1fr;
  }

  .case-card {
    min-height: 0;
  }
}