.internal-proof{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:40px;padding:32px;margin-bottom:40px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}
.internal-proof h3{font-size:clamp(1.5rem,3vw,2rem);line-height:1.2;margin:12px 0 20px}
.internal-proof p{line-height:1.7;color:var(--sand-dim)}
.internal-proof .text-link{margin-top:16px}
.internal-proof ul{list-style:none;margin:0;padding:0;align-self:center}
.internal-proof li{padding:16px 0;border-bottom:1px solid var(--line);line-height:1.5}
.internal-proof li:first-child{border-top:1px solid var(--line)}
.internal-case{scroll-margin-top:110px;padding-block:48px 64px}
.internal-case-intro{max-width:76ch;margin-bottom:32px}
.internal-case-intro .section-title{margin:16px 0 24px}
.internal-case p{line-height:1.75;color:var(--sand-dim);margin:0 0 16px}
.internal-case-map{margin:32px 0 40px;padding:28px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}
.internal-case-map ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;list-style:none;padding:0;margin:0 0 20px}
.internal-case-map li{position:relative;padding:18px;border:1px solid var(--line);border-radius:8px;line-height:1.5}
.internal-case-map li:not(:last-child)::after{content:'→';position:absolute;right:-25px;top:50%;transform:translateY(-50%);color:var(--aqua)}
.internal-case-map strong,.internal-case-map span{display:block}
.internal-case-map span{font-size:.9rem;color:var(--sand-dim);margin-top:6px}
.internal-case-map figcaption{color:var(--sand-dim);font-size:.9rem;line-height:1.6}
.internal-case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 48px}
.internal-case-grid article{border-top:1px solid var(--line);padding-top:24px}
.internal-case-grid h3{font-size:1.3rem;margin:0 0 14px;line-height:1.4}
.internal-case-details{margin-top:32px;border-block:1px solid var(--line);padding-block:18px}
.internal-case-details summary{cursor:pointer;font-weight:600;padding:10px 0}
.internal-case-details p{max-width:85ch;margin:16px 0}
.internal-case a:focus-visible,.internal-proof a:focus-visible,.internal-case summary:focus-visible{outline:2px solid var(--aqua);outline-offset:5px}
.internal-case .internal-case-close{margin:24px 0 0}
.work-page .internal-case{padding-bottom:32px}
.work-page .internal-case + .work-showcase{padding-top:0}
@media(max-width:700px){.internal-proof,.internal-case-grid{grid-template-columns:1fr;gap:24px}.internal-proof{padding:24px}.internal-case-map{padding:20px}.internal-case-map ol{grid-template-columns:1fr;gap:24px;margin-bottom:28px}.internal-case-map li:not(:last-child)::after{content:'↓';right:50%;top:auto;bottom:-24px;transform:none}.internal-case{padding-block:32px 48px}}