:root {
  --red: #e5252a;
  --black: #050505;
  --paper: #f1efe9;
  --white: #fff;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-synthesis: none;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--black); color: var(--white); scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; overflow-x: clip; background: var(--paper); }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }

.case-page__content { min-height: 100vh; }
.case-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 80;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 112px;
  padding: 14px 3.9vw;
  color: var(--white);
  mix-blend-mode: difference;
}
.case-header__brand { width: 128px; justify-self: start; }
.case-header__brand img { height: auto; }
.case-header__progress { margin: 0; font: 11px/1 Arial, sans-serif; letter-spacing: .12em; }
.case-header__back {
  justify-self: end;
  padding: 10px 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: 13px/1.1 inherit;
  cursor: pointer;
}
.case-header__back span { display: inline-block; margin-left: 8px; font-size: 19px; transition: transform 400ms var(--ease); }
.case-header__back:hover span { transform: rotate(90deg); }
.case-header__back:focus-visible, .case-next a:focus-visible { outline: 2px solid var(--red); outline-offset: 6px; }

.case-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-content: center;
  min-height: min(840px, 90svh);
  padding: clamp(170px, 12vw, 320px) 3.9vw 72px;
  background: var(--black);
  color: var(--white);
}
.case-hero__serial { position: static; align-self: center; margin: 0; color: var(--red); font: 12px/1 Arial, sans-serif; letter-spacing: .14em; }
.case-hero__categories { position: static; grid-column: 2; grid-row: 2; align-self: start; justify-self: end; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px 18px; max-width: min(32vw, 360px); margin: 36px 0 0 24px; font-size: 20px; line-height: 1.4; text-align: right; overflow-wrap: anywhere; }
.case-hero h1 { grid-column: 1; grid-row: 2; margin: 36px 0 0; min-width: 0; max-width: 100%; font-size: clamp(32px, 8.5vw, 90px); font-weight: 500; line-height: 1.08; letter-spacing: -.045em; overflow-wrap: anywhere; text-transform: uppercase; }
.case-hero__subtitle, .case-hero__tagline, .case-hero__meta { grid-column: 1 / -1; }
.case-hero__subtitle { margin: 2.4vw 0 0; color: var(--red); font-size: clamp(18px, 2vw, 38px); letter-spacing: .01em; }
.case-hero__tagline { max-width: 28em; margin: clamp(32px, 4.5vw, 72px) 0 0 30%; font-size: clamp(15px, 4vw, 20px); font-weight: 300; line-height: 1.75; letter-spacing: .015em; }
.case-hero__meta { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 32px; align-self: end; margin: clamp(60px, 8vw, 130px) 0 0 30%; }
.case-hero__meta div { border-top: 1px solid rgba(255,255,255,.35); padding-top: 12px; }
.case-hero__meta dt { margin-bottom: 8px; color: rgba(255,255,255,.52); font: 10px/1 Arial, sans-serif; letter-spacing: .12em; }
.case-hero__meta dd { margin: 0; font-size: 13px; line-height: 1.45; }
.case-hero__scroll { position: absolute; right: 3.9vw; bottom: 2.6vw; color: rgba(255,255,255,.5); font: 10px/1 Arial, sans-serif; letter-spacing: .12em; }

.case-cover { height: auto; margin: 0; background: #161616; }
/* Detail artwork keeps its intrinsic proportions on laptops as well as phones. */
.case-cover img, .case-cover.is-visible img { height: auto; max-height: none; object-fit: contain; transform: none; }

.case-editorial { display: grid; grid-template-columns: minmax(140px, 1fr) 4fr; gap: 4vw; padding: clamp(90px, 11vw, 210px) 3.9vw; background: var(--paper); color: var(--black); }
.case-editorial__eyebrow { margin: .5em 0 0; color: var(--red); font: 11px/1 Arial, sans-serif; letter-spacing: .12em; }
.case-editorial blockquote { grid-column: 2; max-width: 1390px; margin: 0; font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", serif; font-size: clamp(36px, 5.2vw, 100px); font-weight: 300; line-height: 1.12; letter-spacing: -.035em; }
.case-editorial__copy { grid-column: 2; display: grid; grid-template-columns: 1fr 2.2fr; gap: 4vw; margin-top: 8vw; border-top: 1px solid rgba(0,0,0,.28); padding-top: 20px; }
.case-editorial--without-quote .case-editorial__copy { margin-top: 0; }
.case-editorial__copy h2 { margin: 0; color: var(--red); font-size: 16px; font-weight: 500; }
.case-editorial__copy p { margin: 0; max-width: 860px; font-size: clamp(20px, 2vw, 38px); line-height: 1.6; }

.case-logo-stage { position: relative; display: grid; min-height: 80svh; place-items: center; padding: 10vw; overflow: hidden; background: var(--red); }
.case-logo-stage span { position: absolute; top: 32px; left: 3.9vw; font: 10px/1 Arial, sans-serif; letter-spacing: .12em; }
.case-logo-stage img { width: min(54vw, 860px); max-height: 62vh; object-fit: contain; transform: scale(.86); transition: transform 1.2s var(--ease); }
.case-logo-stage.is-visible img { transform: scale(1); }

.case-gallery { display: grid; grid-template-columns: minmax(0, 1fr); align-items: start; gap: 1px; padding: 1px; background: var(--black); }
.case-story__image { height: auto; min-width: 0; margin: 0; background: #151515; }
.case-story__image img, .case-story__image.is-visible img, .case-story__image:hover img { height: auto; max-height: none; object-fit: contain; object-position: center; transform: none; }
.has-image-error { background: var(--red); }
.has-image-error img { opacity: 0; }

.case-method { display: grid; grid-template-columns: 1fr 3fr; gap: 4vw; padding: clamp(100px, 13vw, 250px) 3.9vw; background: var(--paper); color: var(--black); }
.case-method__index { grid-row: span 2; margin: 0; color: var(--red); font: 11px/1 Arial, sans-serif; letter-spacing: .12em; }
.case-method h2 { margin: 0; min-width: 0; font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", serif; font-size: clamp(28px, 3vw, 56px); font-weight: 300; line-height: 1.3; letter-spacing: -.025em; overflow-wrap: anywhere; }
.case-method > p:last-child { max-width: 920px; margin: clamp(20px, 2.5vw, 40px) 0 0; font-size: clamp(16px, 1.25vw, 22px); line-height: 1.8; }

.case-credits { display: grid; grid-template-columns: 1fr 3fr; gap: 4vw; padding: 5vw 3.9vw 10vw; background: var(--paper); color: var(--black); }
.case-credits h2 { margin: 0; color: var(--red); font: 11px/1 Arial, sans-serif; letter-spacing: .12em; }
.case-credits dl { margin: 0; border-top: 1px solid var(--black); }
.case-credits dl div { display: grid; grid-template-columns: 1fr 2fr; gap: 20px; padding: 16px 0; border-bottom: 1px solid rgba(0,0,0,.25); }
.case-credits dt { color: rgba(0,0,0,.5); font-size: 12px; }
.case-credits dd { margin: 0; font-size: 14px; }

.case-next { background: var(--black); color: var(--white); }
.case-next a { position: relative; display: grid; min-height: 70svh; align-content: center; padding: 8vw 3.9vw; overflow: hidden; }
.case-next span { color: var(--red); font: 11px/1 Arial, sans-serif; letter-spacing: .12em; }
.case-next strong { display: block; margin-top: 24px; max-width: 90%; font-size: clamp(28px, 4vw, 72px); font-weight: 500; line-height: 1.2; letter-spacing: -.035em; overflow-wrap: anywhere; transition: transform 700ms var(--ease); }
.case-next em { position: absolute; right: 4vw; bottom: 4vw; color: var(--red); font-size: 48px; font-style: normal; transition: transform 500ms var(--ease); }
.case-next a:hover strong { transform: translateX(1.5vw); }
.case-next a:hover em { transform: rotate(45deg); }

.case-consultation { display: flex; justify-content: flex-end; padding: 40px 3.9vw 64px; border-top: 1px solid rgba(255,255,255,.2); background: var(--black); color: var(--white); }
.case-consultation__button { display: inline-flex; align-items: center; justify-content: space-between; gap: 56px; min-height: 52px; padding: 16px 24px; border: 1px solid var(--red); border-radius: 2px; background: var(--red); color: var(--white); font-size: 16px; line-height: 1.3; transition: background-color 160ms ease, transform 160ms var(--ease); }
.case-consultation__button:active { transform: scale(.97); }
.case-consultation__button:focus-visible { outline: 2px solid var(--white); outline-offset: 5px; transition: none; }
@media (hover: hover) and (pointer: fine) {
  .case-consultation__button:hover { background-color: #bc171c; }
}

.case-not-found { display: grid; min-height: 100svh; place-content: center; padding: 32px; background: var(--black); text-align: center; }
.case-not-found img { width: 140px; margin: 0 auto 64px; }
.case-not-found p { color: var(--red); font-size: 11px; letter-spacing: .12em; }
.case-not-found h1 { margin: 12px 0 30px; font-size: clamp(42px, 7vw, 100px); }
.case-not-found a { color: var(--red); }

[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity 700ms ease, transform 950ms var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
.case-cover[data-reveal], .case-logo-stage[data-reveal], .case-story__image[data-reveal] { transform: none; }

@media (max-width: 760px) {
  .case-header { grid-template-columns: 1fr auto; height: 82px; padding: 10px 18px; background: rgba(5,5,5,.94); mix-blend-mode: normal; }
  .case-header__brand { width: 92px; }
  .case-header__progress { display: none; }
  /* Metadata stays in flow so wrapped titles never collide with absolute labels. */
  .case-hero { grid-template-columns: minmax(0,1fr) auto; align-content: start; min-height: 0; padding: 130px 18px 40px; }
  .case-hero__serial { position: static; align-self: start; line-height: 1.5; }
  .case-hero__categories { position: static; justify-self: end; justify-content: flex-end; flex-wrap: wrap; gap: 8px; max-width: 40vw; margin: 30px 0 0 12px; line-height: 1.5; text-align: right; }
  .case-hero h1 { grid-column: 1; align-self: start; max-width: 100%; min-width: 0; margin-top: 30px; line-height: 1.18; letter-spacing: -.035em; overflow-wrap: anywhere; }
  .case-hero__subtitle { grid-column: 1 / -1; margin-top: 16px; font-size: 18px; line-height: 1.5; overflow-wrap: anywhere; }
  .case-hero__tagline { grid-column: 1 / -1; margin: 24px 0 0; }
  .case-hero__subtitle:empty, .case-hero__tagline:empty { display: none; }
  .case-hero__meta { grid-column: 1 / -1; grid-template-columns: 1fr; gap: 18px; margin: 32px 0 0; }
  .case-hero__meta dd { overflow-wrap: anywhere; }
  .case-hero__scroll { display: none; }
  .case-cover { height: auto; }
  /* Detail artwork must remain complete, including wide images and long layouts. */
  .case-cover img, .case-cover.is-visible img,
  .case-story__image img, .case-story__image.is-visible img, .case-story__image:hover img {
    width: 100%; height: auto; max-height: none; object-fit: contain; object-position: center; transform: none;
  }
  .case-editorial { grid-template-columns: 1fr; padding-right: 18px; padding-left: 18px; }
  .case-editorial blockquote, .case-editorial__copy { grid-column: 1; }
  .case-editorial__copy { grid-template-columns: 1fr; }
  .case-logo-stage { min-height: 62svh; }
  .case-logo-stage img { width: 78vw; }
  .case-story__image { min-width: 0; height: auto; margin: 0; }
  .case-method, .case-credits { grid-template-columns: 1fr; padding-right: 18px; padding-left: 18px; }
  .case-method__index { grid-row: auto; }
  .case-credits dl div { grid-template-columns: 1fr; }
  .case-next a { min-height: 55svh; padding: 18px; }
  .case-consultation { padding: 28px 18px 40px; }
  .case-consultation__button { width: 100%; }
}

@media (max-width: 370px) { .case-hero { padding-top: 175px; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .case-consultation__button:active { transform: none; }
}
.case-hero__tagline,.case-editorial blockquote,.case-editorial__copy p,.case-method>p:last-child{white-space:pre-wrap;overflow-wrap:anywhere;min-width:0}
.case-footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding:36px 3.9vw;background:var(--black);color:rgba(255,255,255,.62);font-size:11px;line-height:1.8}.case-footer a{color:inherit}