:root {
  --bg: #f4f6f8;
  --bg-2: #e7edf3;
  --ink: #0b1d2a;
  --ink-2: #1f3a5f;
  --mid: #4a7ba6;
  --light: #aac4dd;
  --rule: rgba(11, 29, 42, 0.12);
  --muted: rgba(11, 29, 42, 0.55);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--ink); font-family: 'Inter', sans-serif; -webkit-font-smoothing: antialiased; }
body { overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--ink); color: var(--bg); }

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 40px;
  backdrop-filter: blur(18px);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--rule);
  font-size: 13px; letter-spacing: 0.02em;
}
.nav__logo { font-weight: 700; letter-spacing: -0.01em; font-size: 15px; }
.nav__logo span { color: var(--mid); }
.nav__back {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  letter-spacing: 0.06em; color: var(--ink-2);
}
.nav__back:hover { color: var(--ink); }

.case-hero {
  padding: 180px 40px 80px;
  display: grid; grid-template-columns: 100px 1fr; gap: 40px;
}
.case-hero__num {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--mid);
  letter-spacing: 0.14em;
}
.case-hero__body { max-width: 1100px; }
.case-hero__kicker {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
  margin-bottom: 24px;
}
.case-hero__title {
  font-size: clamp(60px, 11vw, 180px);
  font-weight: 800; letter-spacing: -0.045em; line-height: 0.88;
  color: var(--ink);
}
.case-hero__title em { font-style: normal; color: var(--mid); font-weight: 300; }
.case-hero__sub {
  margin-top: 36px;
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--ink-2);
  max-width: 780px;
}

.case-meta {
  margin-top: 80px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
  padding: 32px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.case-meta__cell h5 {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--mid); margin-bottom: 10px; font-weight: 500;
}
.case-meta__cell p { font-size: 15px; color: var(--ink-2); line-height: 1.5; }

.case-block {
  padding: 100px 40px;
  border-top: 1px solid var(--rule);
}
.case-block__head {
  display: grid; grid-template-columns: 100px 1fr; gap: 40px;
  margin-bottom: 60px;
}
.case-block__num {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--mid);
  letter-spacing: 0.14em;
}
.case-block__title {
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 600; letter-spacing: -0.03em; line-height: 1;
  max-width: 900px;
}
.case-block__title em { font-style: normal; color: var(--mid); font-weight: 300; }

.case-block__body { display: grid; grid-template-columns: 100px 1fr; gap: 40px; }
.case-block__copy { max-width: 720px; font-size: 17px; line-height: 1.6; color: var(--ink-2); }
.case-block__copy p + p { margin-top: 18px; }
.case-block__copy b { color: var(--ink); font-weight: 600; }

.case-images {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-top: 60px;
}
.case-images.cols-2 { grid-template-columns: repeat(2, 1fr); }
.case-images.cols-1 { grid-template-columns: 1fr; }
.case-images__item {
  aspect-ratio: 4/5; border-radius: 6px; overflow: hidden; position: relative;
  background: linear-gradient(135deg, var(--ink-2), var(--mid));
}
.case-images.wide .case-images__item { aspect-ratio: 16/10; }
.case-images__item::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 25% 35%, color-mix(in oklab, var(--light) 60%, transparent) 0%, transparent 45%),
    radial-gradient(circle at 75% 70%, color-mix(in oklab, var(--ink) 50%, transparent) 0%, transparent 50%);
}
.case-images__item::after {
  content: attr(data-label);
  position: absolute; bottom: 14px; left: 16px;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: color-mix(in oklab, var(--bg) 80%, transparent);
  letter-spacing: 0.08em;
}

.case-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  margin-top: 40px;
  border-top: 1px solid var(--rule);
}
.case-stat {
  padding: 32px 24px 32px 0;
  border-right: 1px solid var(--rule);
}
.case-stat:last-child { border-right: none; padding-right: 0; }
.case-stat__num {
  font-size: clamp(48px, 6vw, 80px);
  font-weight: 700; letter-spacing: -0.04em; line-height: 0.95;
  color: var(--ink);
}
.case-stat__num em { font-style: normal; color: var(--mid); font-weight: 300; }
.case-stat__label {
  margin-top: 14px;
  font-size: 14px; line-height: 1.5; color: var(--ink-2);
}

.case-list {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-top: 40px;
}
.case-list__item {
  padding: 20px 24px;
  background: var(--bg);
  font-size: 15px;
  color: var(--ink-2);
}
.case-list__item span {
  display: block;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: var(--mid); letter-spacing: 0.1em; margin-bottom: 6px;
}

.next-case {
  padding: 120px 40px;
  border-top: 1px solid var(--rule);
}
.next-case a {
  display: grid; grid-template-columns: 100px 1fr auto; gap: 40px;
  align-items: end;
  padding: 40px 0;
  transition: padding .35s ease;
}
.next-case a:hover { padding: 40px 24px 40px 24px; }
.next-case__label {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  letter-spacing: 0.14em; color: var(--mid);
}
.next-case__title {
  font-size: clamp(48px, 8vw, 120px);
  font-weight: 700; letter-spacing: -0.04em; line-height: 0.92;
}
.next-case__title em { font-style: normal; color: var(--mid); font-weight: 300; }
.next-case__arrow {
  width: 64px; height: 64px; border-radius: 50%;
  border: 1px solid var(--rule);
  display: flex; align-items: center; justify-content: center;
  transition: all .35s ease;
}
.next-case a:hover .next-case__arrow { background: var(--ink); color: var(--bg); transform: rotate(-45deg); border-color: var(--ink); }

footer {
  padding: 32px 40px;
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--muted); letter-spacing: 0.06em;
}

.reveal { opacity: 0; transform: translateY(30px); transition: opacity .9s ease, transform .9s cubic-bezier(.2,.85,.2,1); }
.reveal.is-in { opacity: 1; transform: translateY(0); }

/* real image containers */
.ci { border-radius: 8px; overflow: hidden; background: var(--bg-2); border: 1px solid var(--rule); line-height: 0; }
.ci img { display: block; width: 100%; height: auto; vertical-align: bottom; }
.ci-row { display: grid; gap: 16px; margin-top: 48px; margin-left: 140px; align-items: start; }
.ci-row.c1 { grid-template-columns: 1fr; }
.ci-row.c2 { grid-template-columns: 1fr 1fr; }
.ci-row.c3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 880px) {
  .nav { padding: 16px 20px; }
  .case-hero { padding: 120px 20px 60px; grid-template-columns: 1fr; }
  .case-meta { grid-template-columns: 1fr 1fr; gap: 16px; }
  .case-block { padding: 60px 20px; }
  .case-block__head, .case-block__body { grid-template-columns: 1fr; gap: 16px; }
  .case-images { grid-template-columns: 1fr; }
  .case-images.cols-2, .case-images.cols-1 { grid-template-columns: 1fr; }
  .case-stats { grid-template-columns: 1fr; }
  .case-stat { border-right: none; border-bottom: 1px solid var(--rule); }
  .case-list { grid-template-columns: 1fr; }
  .next-case { padding: 60px 20px; }
  .next-case a { grid-template-columns: 1fr; gap: 16px; }
  footer { padding: 24px 20px; flex-direction: column; gap: 8px; }
  .ci-row { margin-left: 0; grid-template-columns: 1fr !important; }
}