:root {
  --black: #090909;
  --ink: #111;
  --paper: #f4f4f1;
  --line: rgba(17, 17, 17, .18);
  --muted: #71716d;
  --max: 1600px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
img {
  -webkit-user-drag: none;
  -webkit-touch-callout: none;
  user-select: none;
}
button { font: inherit; }

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 32px;
  color: #fff;
  mix-blend-mode: difference;
}
.wordmark { font-size: 15px; font-weight: 700; }
nav { display: flex; gap: 26px; font-size: 12px; }
nav a { opacity: .72; transition: opacity .2s ease; }
nav a:hover { opacity: 1; }

.case-entry {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 24px;
  align-items: baseline;
  margin: 0 0 20px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.case-entry span { color: var(--muted); font-size: 10px; text-transform: uppercase; }
.case-entry strong { font-size: 14px; font-weight: 500; }

.hero {
  position: relative;
  min-height: 84vh;
  overflow: hidden;
  color: white;
}
.hero > picture {
  position: absolute;
  inset: 0;
}
.hero > picture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right bottom;
}
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.58), rgba(0,0,0,.08) 62%, rgba(0,0,0,.18));
}
.hero-content {
  position: absolute;
  z-index: 2;
  left: clamp(24px, 6vw, 100px);
  bottom: clamp(58px, 10vh, 110px);
  max-width: 820px;
}
.eyebrow, .section-index {
  margin: 0 0 22px;
  font-size: 11px;
  text-transform: uppercase;
  color: inherit;
}
h1, h2, h3, p { letter-spacing: 0; }
h1 {
  margin: 0;
  font-size: clamp(62px, 10vw, 160px);
  line-height: .85;
  font-weight: 520;
}
.hero-subtitle { margin: 30px 0 0; font-size: clamp(16px, 2vw, 26px); }
.hero-services { margin: 12px 0 0; font-size: 12px; opacity: .7; }
.scroll-cue {
  position: absolute;
  right: 32px;
  bottom: 30px;
  z-index: 2;
  font-size: 10px;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.section, .portfolio {
  width: min(var(--max), 100%);
  margin: 0 auto;
  padding: clamp(68px, 8vw, 112px) clamp(22px, 4vw, 64px);
}
.about {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 6vw;
  align-items: end;
}
.about h2, .section-heading h2, .contact h2 {
  margin: 0;
  font-size: clamp(46px, 7vw, 110px);
  line-height: .95;
  font-weight: 500;
}
.about-copy { max-width: 520px; padding-bottom: 4px; }
.about-copy h3 { margin: 0 0 24px; font-size: 14px; }
.about-copy p { margin: 0 0 18px; color: #464643; font-size: clamp(15px, 1.4vw, 19px); line-height: 1.8; }
.text-link { display: inline-block; margin-top: 24px; padding-bottom: 7px; border-bottom: 1px solid var(--ink); font-size: 12px; text-transform: uppercase; }

.portfolio { padding-top: 20px; }
.section-heading { display: grid; grid-template-columns: .5fr 1fr 1fr; align-items: end; gap: 28px; padding-bottom: 42px; border-bottom: 1px solid var(--line); }
.section-heading h2 { grid-column: 2; }
.section-heading > p:last-child { max-width: 380px; margin: 0 0 8px; color: var(--muted); font-size: 13px; line-height: 1.7; }
.project { padding: 56px 0 72px; border-bottom: 1px solid var(--line); }
.project-title { display: grid; grid-template-columns: 1fr 1fr auto; align-items: baseline; margin-bottom: 24px; }
.project-title p, .project-title span { margin: 0; color: var(--muted); font-size: 11px; text-transform: uppercase; }
.project-title h3 { margin: 0; font-size: clamp(26px, 3vw, 46px); font-weight: 500; }

.gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 6px;
  grid-auto-flow: dense;
}
.work {
  grid-column: span 4;
  position: relative;
  border: 0;
  padding: 0;
  background: #ddd;
  overflow: hidden;
  cursor: zoom-in;
  aspect-ratio: 4 / 3;
  -webkit-touch-callout: none;
  user-select: none;
}
.work-wide { grid-column: span 8; aspect-ratio: 16 / 9; }
.work-tall { aspect-ratio: 3 / 4; }
.gallery:not(.gallery-portrait) .work,
.gallery:not(.gallery-portrait) .work-wide {
  grid-column: span 3;
  aspect-ratio: 4 / 3;
}
.gallery:not(.gallery-portrait) .work:nth-child(1),
.gallery:not(.gallery-portrait) .work:nth-child(2),
.gallery:not(.gallery-portrait) .work:nth-child(7),
.gallery:not(.gallery-portrait) .work:nth-child(8) {
  grid-column: span 6;
  aspect-ratio: 16 / 10;
}
.gallery-portrait .work,
.gallery-portrait .work-wide {
  grid-column: span 3;
  aspect-ratio: 3 / 4;
}
.work img {
  height: 100%;
  object-fit: cover;
  object-position: right bottom;
  transition: transform .7s cubic-bezier(.22,.61,.36,1), filter .3s ease;
}
.work:hover img { transform: scale(1.025); filter: brightness(.88); }

.services { padding-top: 32px; }
.services .section-heading { grid-template-columns: .5fr 1fr; }
.service-list { margin-top: 36px; border-top: 1px solid var(--line); }
.service-list article {
  display: grid;
  grid-template-columns: .5fr 1fr 1fr;
  gap: 40px;
  align-items: start;
  padding: 22px 0 28px;
  border-bottom: 1px solid var(--line);
}
.service-list span { color: var(--muted); font-size: 11px; }
.service-list h3 { margin: 0; font-size: clamp(22px, 3vw, 42px); font-weight: 500; }
.service-list p { max-width: 380px; margin: 3px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6vw;
  align-items: end;
  color: #fff;
  background: var(--black);
  max-width: none;
}
.contact h2 { margin-bottom: 50px; }
.contact-lead > a { font-size: clamp(16px, 2vw, 25px); border-bottom: 1px solid rgba(255,255,255,.55); padding-bottom: 8px; }
.contact-details { display: grid; grid-template-columns: 180px 1fr; gap: 50px; align-items: end; }
.wechat-qr {
  display: block;
  width: 180px;
  height: auto;
  background: #fff;
}
dl { margin: 0; }
dl div { padding: 15px 0; border-top: 1px solid rgba(255,255,255,.2); }
dt { margin-bottom: 8px; color: #888; font-size: 9px; text-transform: uppercase; }
dd { margin: 0; font-size: 13px; }

footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: 24px 32px;
  color: #bbb;
  background: var(--black);
  border-top: 1px solid #272727;
  font-size: 9px;
  text-transform: uppercase;
}
footer p { margin: 0; }
footer p:last-child { text-align: right; }

.lightbox {
  width: 100vw;
  max-width: none;
  height: 100vh;
  max-height: none;
  margin: 0;
  padding: 30px;
  border: 0;
  background: rgba(0,0,0,.95);
}
.lightbox:not([open]) { display: none; }
.lightbox::backdrop { background: rgba(0,0,0,.92); }
.lightbox img { width: 100%; height: 100%; object-fit: contain; }
.lightbox-close {
  position: fixed;
  z-index: 3;
  top: 20px;
  right: 25px;
  width: 40px;
  height: 40px;
  border: 0;
  color: #fff;
  background: rgba(0,0,0,.5);
  font-size: 30px;
  cursor: pointer;
}

.case-hero {
  position: relative;
  min-height: 92vh;
  overflow: hidden;
  color: #fff;
}
.case-hero > picture { position: absolute; inset: 0; }
.case-hero > picture img { width: 100%; height: 100%; object-fit: cover; object-position: right bottom; }
.portrait-case-hero .hero-shade { background: linear-gradient(90deg, rgba(0,0,0,.72), rgba(0,0,0,.16) 58%, rgba(0,0,0,.08)); }
.case-hero-content {
  position: absolute;
  z-index: 2;
  left: clamp(24px, 6vw, 100px);
  right: 24px;
  bottom: clamp(58px, 10vh, 110px);
  max-width: min(1100px, calc(100vw - 48px));
}
.case-hero-content .eyebrow { margin: 0 0 18px; }
.case-hero h1 { font-size: clamp(48px, 8vw, 128px); line-height: .92; }
.case-hero-content > p:last-child { margin: 28px 0 0; font-size: clamp(13px, 1.4vw, 20px); }
.case-overview { display: grid; grid-template-columns: 1.2fr .8fr; gap: 8vw; align-items: end; }
.case-intro h2, .delivery h2 {
  margin: 0;
  font-size: clamp(40px, 6vw, 92px);
  line-height: 1;
  font-weight: 500;
}
.case-intro > p:last-child { max-width: 650px; margin: 32px 0 0; color: var(--muted); font-size: 15px; line-height: 1.8; }
.overview-list div { padding: 20px 0; border-top: 1px solid var(--line); }
.overview-list dt { color: var(--muted); }
.overview-list dd { font-size: 15px; line-height: 1.8; }
.case-story { padding-top: 20px; }
.story-chapter { padding: 58px 0 72px; border-bottom: 1px solid var(--line); }
.chapter-copy { display: grid; grid-template-columns: .5fr 1fr 1fr; margin-bottom: 24px; }
.chapter-copy > span { color: var(--muted); font-size: 11px; }
.chapter-copy div { grid-column: 2 / 4; display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.chapter-copy h3 { margin: 0; font-size: clamp(25px, 3vw, 44px); font-weight: 500; }
.chapter-copy p { max-width: 380px; margin: 5px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.case-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
.case-gallery .work { width: 100%; grid-column: auto; aspect-ratio: 4 / 3; }
.case-gallery .case-feature { grid-column: 1 / -1; aspect-ratio: 4 / 3; }
.case-gallery-four { grid-template-columns: repeat(4, 1fr); }
.case-gallery-four .work { aspect-ratio: 4 / 3; }
.case-gallery-four .case-portrait { aspect-ratio: 4 / 3; }
.case-gallery-portrait .work { aspect-ratio: 3 / 4; }
.case-gallery-two { grid-template-columns: repeat(2, 1fr); }
.case-gallery-three { grid-template-columns: repeat(3, 1fr); }
.focus-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin-top: 38px; }
.focus-grid article { min-height: 280px; padding: 20px; color: #fff; background: var(--black); }
.focus-grid span { color: #777; font-size: 10px; }
.focus-grid h3 { margin: 90px 0 16px; font-size: 20px; font-weight: 500; line-height: 1.3; }
.focus-grid p { margin: 0; color: #999; font-size: 12px; line-height: 1.7; }
.delivery { display: grid; grid-template-columns: .5fr 1fr 1fr; gap: 28px; align-items: start; }
.delivery h2 { font-size: clamp(36px, 5vw, 72px); }
.delivery div p { max-width: 520px; margin: 26px 0 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.delivery ul { margin: 0; padding: 0; list-style: none; }
.delivery li { padding: 17px 0; border-top: 1px solid var(--line); font-size: 13px; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 800px) {
  .site-header { padding: 18px 18px; }
  nav { gap: 14px; }
  nav .nav-secondary { display: none; }
  .case-page nav a:not(:first-child):not(:last-child) { display: none; }
  .hero { min-height: 78svh; }
  .hero-content { left: 20px; right: 20px; bottom: 55px; }
  h1 { font-size: 58px; line-height: .9; }
  .hero-services { max-width: 260px; line-height: 1.7; }
  .scroll-cue { display: none; }
  .section, .portfolio { padding: 54px 14px; }
  .about, .contact { grid-template-columns: 1fr; gap: 32px; }
  .section-heading, .services .section-heading { display: block; padding-bottom: 24px; }
  .section-heading h2 { margin-bottom: 14px; }
  .project { padding: 38px 0 48px; }
  .project-title { grid-template-columns: 1fr auto; row-gap: 8px; }
  .project-title h3 { grid-column: 1; grid-row: 2; }
  .project-title span { grid-column: 2; grid-row: 2; }
  .project-title p { grid-column: 1 / -1; }
  .gallery { gap: 4px; }
  .work, .work-wide { grid-column: span 6; aspect-ratio: 4 / 3; }
  .gallery:not(.gallery-portrait) .work,
  .gallery:not(.gallery-portrait) .work-wide,
  .gallery:not(.gallery-portrait) .work:nth-child(1),
  .gallery:not(.gallery-portrait) .work:nth-child(2),
  .gallery:not(.gallery-portrait) .work:nth-child(7),
  .gallery:not(.gallery-portrait) .work:nth-child(8) {
    grid-column: span 6;
    aspect-ratio: 4 / 3;
  }
  .gallery-portrait .work, .gallery-portrait .work-wide { grid-column: span 6; aspect-ratio: 3 / 4; }
  .gallery-portrait .work:first-child { grid-column: span 6; aspect-ratio: 3 / 4; }
  .service-list article { grid-template-columns: 42px 1fr; gap: 12px; }
  .service-list p { grid-column: 2; }
  .contact { padding-top: 60px; padding-bottom: 60px; }
  .contact-details { grid-template-columns: 120px 1fr; gap: 25px; }
  .wechat-qr { width: 120px; }
  footer { display: flex; flex-direction: column; gap: 12px; padding: 24px 18px; }
  footer p:last-child { text-align: left; }
  .lightbox { padding: 10px; }
  .case-entry { grid-template-columns: 1fr auto; row-gap: 8px; margin-bottom: 16px; }
  .case-entry strong { grid-column: 1 / -1; grid-row: 2; }
  .case-hero { min-height: 78svh; }
  .case-hero-content { left: 18px; right: 18px; bottom: 50px; }
  .case-hero-content .eyebrow { margin-bottom: 14px; }
  .case-hero h1 { font-size: clamp(40px, 13vw, 58px); }
  .case-hero-content > p:last-child { max-width: 290px; line-height: 1.7; }
  .case-overview { grid-template-columns: 1fr; gap: 38px; }
  .chapter-copy, .chapter-copy div { display: block; }
  .chapter-copy > span { display: block; margin-bottom: 10px; }
  .chapter-copy p { margin-top: 12px; }
  .story-chapter { padding: 42px 0 52px; }
  .case-gallery, .case-gallery-four, .case-gallery-two, .case-gallery-three { grid-template-columns: repeat(2, 1fr); gap: 4px; }
  .case-gallery .work, .case-gallery .case-feature, .case-gallery-four .case-portrait { grid-column: auto; aspect-ratio: 4 / 3; }
  .case-gallery-portrait .work { aspect-ratio: 3 / 4; }
  .focus-grid { grid-template-columns: 1fr; gap: 4px; }
  .focus-grid article { min-height: 0; }
  .focus-grid h3 { margin: 52px 0 12px; }
  .delivery { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 360px) {
  h1 { font-size: 50px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .work img { transition: none; }
}