.case-hero { padding: 10rem 0 5rem; background: var(--soft); }
.case-breadcrumb { display: inline-flex; align-items: center; gap: .45rem; margin-bottom: 2.3rem; color: var(--teal); font-size: .82rem; font-weight: 700; }
.case-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: clamp(3rem, 8vw, 7rem); }
.case-label { margin-bottom: 1rem; color: var(--teal); font-family: var(--mono); font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.case-hero h1 { margin-bottom: 1.2rem; font-size: clamp(3rem, 7vw, 5.8rem); letter-spacing: -.06em; }
.case-hero-copy > p:last-child { color: var(--ink-soft); font-size: 1.1rem; }
.case-hero-card { padding: clamp(1.5rem, 4vw, 2.5rem); color: #fff; background: var(--night); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.case-hero-card > p { color: #8ce0d5; font-family: var(--mono); font-size: .7rem; text-transform: uppercase; }
.case-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 0; }
.case-metrics div { padding-top: 1rem; border-top: 1px solid rgba(255,255,255,.14); }
.case-metrics dt { color: #8da69f; font-size: .68rem; text-transform: uppercase; }
.case-metrics dd { margin: .2rem 0 0; color: var(--lime); font-size: clamp(1.55rem, 4vw, 2.4rem); font-weight: 780; letter-spacing: -.05em; }
.case-context { padding: 1rem 0; color: var(--ink-soft); background: var(--paper); border-bottom: 1px solid var(--line); }
.case-context .container { display: flex; flex-wrap: wrap; gap: .7rem 2.2rem; }
.case-context span { font-size: .8rem; }
.case-context strong { color: var(--ink); }
.case-body { padding: 6rem 0; }
.case-content { display: grid; grid-template-columns: 230px minmax(0, 720px); justify-content: center; gap: clamp(2.5rem, 7vw, 6rem); }
.case-toc { position: sticky; top: 8rem; align-self: start; }
.case-toc p { color: var(--muted); font-family: var(--mono); font-size: .68rem; text-transform: uppercase; }
.case-toc a { display: block; margin: .65rem 0; color: var(--ink-soft); font-size: .84rem; }
.case-toc a:hover { color: var(--teal); }
.case-article section { margin-bottom: 4.5rem; scroll-margin-top: 7rem; }
.case-article h2 { margin-bottom: 1rem; font-size: clamp(2rem, 4vw, 3rem); }
.case-article h3 { margin: 2rem 0 .55rem; font-size: 1.35rem; }
.case-article p, .case-article li { color: var(--ink-soft); }
.case-article ul, .case-article ol { padding-left: 1.3rem; }
.case-article li { margin: .65rem 0; padding-left: .25rem; }
.case-article blockquote { margin: 2rem 0; padding: 1.4rem 1.5rem; color: var(--ink); background: var(--soft); border-left: 4px solid var(--teal); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.case-result-panel { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; margin-top: 1.8rem; }
.case-result-panel div { padding: 1.2rem; background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.case-result-panel strong, .case-result-panel span { display: block; }
.case-result-panel strong { color: var(--teal-dark); font-size: 1.7rem; }
.case-result-panel span { color: var(--muted); font-size: .74rem; }
.case-image { overflow: hidden; margin: 2rem 0; background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); }
.case-image img { width: 100%; height: auto; }
.case-note { padding: 1rem 1.2rem; color: var(--muted); background: var(--canvas); border: 1px solid var(--line); border-radius: var(--radius-sm); font-size: .76rem; }
.case-next { padding: 5rem 0; color: #fff; background: var(--teal-dark); }
.case-next .container { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.case-next h2 { max-width: 650px; margin-bottom: .5rem; font-size: clamp(2rem, 5vw, 3.6rem); }
.case-next p { color: #c6d9d5; }
@media (max-width: 850px) {
  .case-hero-grid { grid-template-columns: 1fr; }
  .case-content { grid-template-columns: 1fr; }
  .case-toc { position: static; padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
  .case-toc a { display: inline-block; margin: .3rem 1rem .3rem 0; }
}
@media (max-width: 640px) {
  .case-hero { padding: 8rem 0 3.5rem; }
  .case-metrics, .case-result-panel { grid-template-columns: 1fr; }
  .case-metrics div { display: flex; justify-content: space-between; align-items: baseline; }
  .case-next .container { align-items: stretch; flex-direction: column; }
}