:root {
  --bg: #eae7e0;
  --ink: #14161a;
  --dim: #5c6470;
  --rule: rgba(20, 22, 26, 0.17);
  --shell: 1440px;
}
* {
  box-sizing: border-box;
}
html {
  background: var(--bg);
  scroll-padding-top: 0;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
h1,
h2,
h3,
h4,
p {
  margin: 0;
}
.custom-main {
  width: 100%;
}
.section-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 72px);
}
.custom-page nav[aria-label="Main navigation"] {
  background: var(--custom-nav-bg, var(--bg));
  border-bottom-color: var(--custom-nav-line, var(--rule));
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease;
}
.custom-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 100svh;
  padding-top: clamp(150px, 19vh, 210px);
  padding-bottom: 54px;
  display: flex;
  align-items: center;
}
.hero-content {
  position: relative;
}
.custom-kicker {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 32px;
}
h1 {
  position: relative;
  max-width: 1150px;
  font-size: clamp(64px, 7.9vw, 116px);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: var(--type-display-tracking);
}
.mobile-break {
  display: none;
}
.hero-intro {
  position: relative;
  max-width: 640px;
  margin-top: 36px;
}
.hero-statement {
  font-size: clamp(17px, 1.55vw, 21px);
  line-height: 1.65;
  letter-spacing: var(--type-copy-tracking);
  margin-bottom: 14px;
}
.hero-copy {
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: var(--type-copy-tracking);
  color: var(--dim);
}
.hero-actions {
  position: relative;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px 32px;
  margin-top: 32px;
}
.primary-link,
.text-link,
.case-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  font-size: 14px;
  line-height: 1.5;
  padding: 13px 0;
  border-bottom: 1px solid currentColor;
}
.primary-link {
  background: var(--ink);
  color: var(--bg);
  padding: 14px 20px;
  border: 1px solid var(--ink);
  min-height: 50px;
}
.primary-link span:last-child,
.text-link span:last-child,
.case-link span:last-child {
  transition: transform 0.25s ease;
}
.primary-link:hover span:last-child,
.text-link:hover span:last-child,
.case-link:hover span:last-child {
  transform: translate(3px, -3px);
}
.custom-mark {
  position: absolute;
  z-index: -1;
  right: 2vw;
  top: 4%;
  width: min(47vw, 660px);
  height: auto;
  opacity: 0.045;
  pointer-events: none;
  user-select: none;
}
.page-index {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  border-top: 1px solid var(--rule);
  padding-top: 22px;
  margin-top: clamp(54px, 9vh, 100px);
}
.index-link {
  display: inline-flex;
  gap: 14px;
  font-size: 12px;
  color: var(--dim);
  padding-block: 6px;
}
.index-link:hover {
  color: var(--ink);
}
.custom-section {
  padding-block: clamp(76px, 10vw, 144px);
}
.section-label {
  display: flex;
  gap: 20px;
  align-items: baseline;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 38px;
}
.section-label > span:first-child {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}
h2 {
  font-size: clamp(42px, 5.2vw, 78px);
  line-height: 1.1;
  font-weight: 400;
  letter-spacing: var(--type-display-tracking);
}
.section-intro {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(36px, 6vw, 100px);
  align-items: start;
}
.section-copy {
  padding-top: 8px;
}
.section-copy p,
.depth-item p,
.commission-grid p,
.process-grid p,
.faq-answer p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--dim);
  letter-spacing: var(--type-copy-tracking);
}
.section-copy p + p {
  margin-top: 20px;
}
.depth-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 46px 8%;
  margin-top: 76px;
}
.depth-item {
  border-top: 1px solid var(--rule);
  padding-top: 20px;
  position: relative;
}
.item-number {
  display: block;
  font-size: 11px;
  color: var(--dim);
  margin-bottom: 22px;
  font-variant-numeric: tabular-nums;
}
h3 {
  font-size: clamp(22px, 2vw, 29px);
  font-weight: 400;
  letter-spacing: var(--type-display-tracking);
  line-height: 1.3;
}
.depth-item p {
  margin-top: 16px;
  max-width: 54ch;
}
.case-studies {
  padding-block: clamp(80px, 10vw, 144px);
  background: #090a0b;
  color: #eae7e0;
}
.case-studies .section-label {
  color: #adb0ae;
}
.case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  margin-top: 62px;
}
.case-image {
  position: relative;
  aspect-ratio: 4/5;
  background: #000;
  overflow: hidden;
  border: 1px solid #252729;
}
.case-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 5%;
}
.case-number {
  position: absolute;
  left: 20px;
  top: 20px;
  color: #dbdcd9;
  font-size: 11px;
  letter-spacing: 0.09em;
}
.case-copy {
  padding-top: 28px;
}
.case-category {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: #adb0ae;
  margin-bottom: 14px;
  line-height: 1.7;
}
.case-copy h3 {
  font-size: clamp(28px, 2.6vw, 40px);
  letter-spacing: var(--type-display-tracking);
}
.case-copy h4 {
  font-size: clamp(18px, 1.6vw, 23px);
  line-height: 1.55;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-top: 24px;
  margin-bottom: 20px;
  max-width: 34ch;
}
.case-copy > p:not(.case-category):not(.excerpt-label) {
  font-size: 15px;
  line-height: 1.85;
  color: #b7bab7;
  max-width: 57ch;
}
.case-copy > p + p {
  margin-top: 14px;
}
.case-copy blockquote {
  margin: 28px 0 9px;
  padding-left: 18px;
  border-left: 1px solid #646a66;
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
}
.excerpt-label {
  font-size: 10px;
  color: #adb0ae;
  letter-spacing: 0.04em;
}
.case-link {
  margin-top: 22px;
  border-color: #646a66;
}
.case-note {
  border-top: 1px solid #363a37;
  color: #adb0ae;
  font-size: 12px;
  line-height: 1.8;
  margin-top: 56px;
  padding-top: 20px;
  max-width: 900px;
}
.commission-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(26px, 4vw, 64px);
  margin-top: 56px;
}
.commission-grid article {
  border-top: 1px solid var(--rule);
  padding-top: 24px;
}
.commission-grid h3 {
  font-size: 25px;
  line-height: 1.35;
}
.commission-grid p {
  margin-top: 20px;
}
.process-section {
  border-top: 1px solid var(--rule);
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  list-style: none;
  padding: 0;
  margin: 60px 0 0;
}
.process-grid li {
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}
.step-number {
  display: block;
  font-size: clamp(44px, 5vw, 68px);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 1;
  color: var(--dim);
  margin-bottom: 30px;
}
.process-grid h3 {
  font-size: 21px;
  line-height: 1.4;
}
.process-grid p {
  font-size: 14px;
  margin-top: 16px;
}
.faq-section {
  border-top: 1px solid var(--rule);
}
.faq-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr;
  gap: 8%;
}
.faq-list {
  border-top: 1px solid var(--rule);
}
.faq-list details {
  border-bottom: 1px solid var(--rule);
}
.faq-list summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  font-size: 17px;
  line-height: 1.6;
  padding: 22px 34px 22px 0;
}
.faq-list summary::-webkit-details-marker {
  display: none;
}
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 22px;
  font-size: 20px;
  line-height: 1.4;
  font-weight: 400;
}
.faq-list details[open] summary::after {
  content: "−";
}
.faq-answer {
  padding: 0 32px 26px 0;
}
.contact-section {
  padding-top: clamp(76px, 10vw, 144px);
  padding-bottom: clamp(80px, 10vw, 144px);
  border-top: 1px solid var(--rule);
}
.contact-section h2 {
  font-size: clamp(54px, 7.4vw, 112px);
  line-height: 1.05;
}
.contact-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10%;
  margin-top: 44px;
  align-items: start;
}
.contact-copy {
  font-size: 17px;
  line-height: 1.9;
  max-width: 43ch;
  color: var(--dim);
}
.contact-copy p + p {
  margin-top: 20px;
}
.contact-action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}
.contact-email {
  font-size: clamp(14px, 1.55vw, 22px);
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 4px;
}
.contact-note {
  font-size: 12px;
  line-height: 1.8;
  color: var(--dim);
  max-width: 48ch;
}
.custom-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-inline: clamp(20px, 5vw, 72px);
  padding: 24px 0 30px;
  border-top: 1px solid var(--rule);
  font-size: 12px;
  color: var(--dim);
}
.custom-footer > div {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-name {
  color: var(--ink);
  font-weight: 500;
}
.custom-footer a {
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}
.custom-footer a:hover {
  border-bottom-color: currentColor;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--bg);
}
.skip-link:focus {
  top: 12px;
}
a:focus-visible,
summary:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 6px;
}
[id] {
  scroll-margin-top: 105px;
}
html[lang^="zh"] h1 {
  font-size: clamp(58px, 6.3vw, 96px);
  line-height: 1.2;
}
html[lang^="zh"] h2 {
  line-height: 1.2;
}
html[lang^="zh"] h3 {
  line-height: 1.5;
}
@media (max-width: 1000px) {
  .section-intro {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .section-copy {
    max-width: 62ch;
    padding-top: 0;
  }
  .process-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .commission-grid {
    gap: 26px;
  }
  .case-grid {
    gap: 32px;
  }
}
@media (max-width: 760px) {
  .custom-hero {
    min-height: auto;
    display: block;
    padding-top: 144px;
    padding-bottom: 44px;
  }
  .custom-kicker {
    font-size: 10px;
    margin-bottom: 26px;
  }
  h1 {
    font-size: clamp(48px, 11.8vw, 84px);
    line-height: 1.08;
  }
  html[lang^="zh"] h1 {
    font-size: clamp(40px, 10.5vw, 68px);
    line-height: 1.23;
  }
  .mobile-break {
    display: initial;
  }
  .hero-intro {
    margin-top: 30px;
  }
  .hero-statement {
    font-size: 17px;
    line-height: 1.8;
  }
  .hero-copy {
    font-size: 15px;
    line-height: 1.85;
  }
  .hero-actions {
    gap: 16px 24px;
    margin-top: 26px;
  }
  .primary-link,
  .text-link {
    font-size: 13px;
    gap: 18px;
  }
  .primary-link {
    padding: 13px 16px;
    min-height: 46px;
  }
  .custom-mark {
    width: 80vw;
    right: -12vw;
    top: 10%;
    opacity: 0.035;
  }
  .page-index {
    gap: 8px 24px;
    margin-top: 46px;
    padding-top: 16px;
  }
  .index-link {
    font-size: 11px;
  }
  .custom-section {
    padding-block: 72px;
  }
  .section-label {
    margin-bottom: 28px;
    gap: 16px;
    font-size: 10px;
  }
  h2 {
    font-size: clamp(36px, 8.7vw, 56px);
  }
  .section-intro {
    gap: 28px;
  }
  .section-copy p,
  .depth-item p,
  .commission-grid p {
    font-size: 15px;
    line-height: 1.9;
  }
  .depth-grid {
    grid-template-columns: 1fr;
    gap: 34px;
    margin-top: 44px;
  }
  .depth-item {
    padding-top: 18px;
  }
  .item-number {
    margin-bottom: 16px;
  }
  .depth-item h3 {
    font-size: 23px;
  }
  .depth-item p {
    margin-top: 12px;
  }
  .case-studies {
    padding-block: 72px;
  }
  .case-grid {
    grid-template-columns: 1fr;
    gap: 64px;
    margin-top: 40px;
  }
  .case-copy {
    padding-top: 24px;
  }
  .case-copy h3 {
    font-size: 31px;
  }
  .case-copy h4 {
    font-size: 20px;
    margin-top: 20px;
  }
  .case-copy blockquote {
    font-size: 17px;
  }
  .case-note {
    margin-top: 42px;
    font-size: 11px;
  }
  .commission-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-top: 38px;
  }
  .commission-grid h3 {
    font-size: 24px;
  }
  .commission-grid p {
    margin-top: 14px;
  }
  .process-grid {
    margin-top: 40px;
    gap: 32px;
  }
  .step-number {
    font-size: 48px;
    margin-bottom: 22px;
  }
  .process-grid h3 {
    font-size: 19px;
  }
  .process-grid p {
    font-size: 14px;
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .faq-list summary {
    font-size: 16px;
    padding-block: 20px;
  }
  .faq-list summary::after {
    top: 20px;
  }
  .faq-answer {
    padding-right: 0;
  }
  .faq-answer p {
    font-size: 14px;
  }
  .contact-section {
    padding-block: 72px;
  }
  .contact-section h2 {
    font-size: clamp(48px, 11vw, 78px);
  }
  .contact-bottom {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-top: 30px;
  }
  .contact-copy {
    font-size: 16px;
  }
  .contact-action {
    gap: 20px;
  }
  .contact-email {
    font-size: 18px;
  }
  .contact-note {
    font-size: 12px;
  }
  .custom-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }
  .custom-footer > div {
    gap: 16px;
    font-size: 11px;
  }
}
@media (max-width: 480px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
  .step-number {
    margin-bottom: 18px;
  }
  .process-grid li {
    padding-top: 20px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .primary-link span:last-child,
  .text-link span:last-child,
  .case-link span:last-child,
  .custom-page nav[aria-label="Main navigation"] {
    transition: none;
  }
}