.case-page { background: var(--color-bg); }
.case-nav { position: sticky; top: 0; z-index: 80; height: 82px; border-bottom: 1px solid var(--color-border); background: rgba(253,252,249,.94); backdrop-filter: blur(16px); }
.case-nav__inner { display: flex; height: 100%; align-items: center; justify-content: space-between; gap: 30px; }
.case-nav__actions { display: flex; align-items: center; gap: 24px; }
.case-back { display: inline-flex; align-items: center; gap: 9px; color: var(--color-text-muted); font-size: .8rem; font-weight: 650; transition: color .2s ease; }
.case-back:hover { color: var(--color-ink); }
.case-back > span:first-child { font-size: 1.1rem; }

.case-switcher { z-index: 75; overflow: hidden; border: 1px solid var(--color-border); background: rgba(253,252,249,.96); box-shadow: var(--shadow); backdrop-filter: blur(16px); }
.case-switcher__head { display: flex; min-height: 66px; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 18px; border-bottom: 1px solid var(--color-border); }
.case-switcher__head span { color: var(--color-accent-deep); font-size: .7rem; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
.case-switcher__head strong { display: grid; width: 30px; height: 30px; flex: 0 0 auto; place-items: center; border-radius: 50%; background: var(--color-ink); color: #fff; font-family: var(--font-serif); font-size: .74rem; font-weight: 500; }
.case-switcher__list { scrollbar-width: thin; scrollbar-color: var(--color-border-strong) transparent; }
.case-switcher__link { display: grid; grid-template-columns: 28px minmax(0, 1fr); align-items: center; gap: 9px; padding: 12px 15px; border-bottom: 1px solid rgba(228,222,212,.75); transition: background .2s ease, color .2s ease; }
.case-switcher__link:hover { background: #fff; }
.case-switcher__link.is-active { background: var(--color-ink); color: #fff; }
.case-switcher__index { color: var(--color-accent); font-family: var(--font-serif); font-size: .72rem; }
.case-switcher__label { min-width: 0; }
.case-switcher__label strong, .case-switcher__label small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.case-switcher__label strong { color: inherit; font-size: .73rem; font-weight: 650; }
.case-switcher__label small { margin-top: 2px; color: var(--color-text-soft); font-size: .58rem; }
.case-switcher__link.is-active .case-switcher__label small { color: #cfc8bd; }

@media (min-width: 1180px) {
  .case-page { padding-right: 280px; }
  .case-switcher { position: fixed; top: 100px; right: 18px; bottom: 18px; display: flex; width: 244px; flex-direction: column; border-radius: var(--radius-lg); }
  .case-switcher__list { flex: 1; overflow-y: auto; }
}

.case-hero { padding: clamp(62px, 8vw, 110px) 0; background: radial-gradient(circle at 88% 12%, rgba(180,145,93,.13), transparent 31%), var(--color-bg); }
.case-hero__inner { display: grid; grid-template-columns: minmax(0, .78fr) minmax(480px, 1.22fr); align-items: center; gap: clamp(48px, 8vw, 110px); }
.case-hero__copy .eyebrow { display: block; margin-bottom: 28px; }
.case-hero__tag { display: inline-block; margin-bottom: 18px; color: var(--color-accent-deep); font-size: .68rem; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
.case-hero h1 { max-width: 12ch; font-size: clamp(2.8rem, 5.6vw, 5.4rem); line-height: .98; overflow-wrap: anywhere; }
.case-hero__copy > p { max-width: 53ch; margin-top: 27px; color: var(--color-text-muted); font-size: 1rem; line-height: 1.75; }
.case-hero__meta { display: flex; align-items: baseline; gap: 11px; margin-top: 35px; padding-top: 25px; border-top: 1px solid var(--color-border); color: var(--color-text-soft); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.case-hero__meta strong { color: var(--color-ink); font-family: var(--font-serif); font-size: 2rem; font-weight: 500; letter-spacing: 0; }
.case-hero__media { overflow: hidden; aspect-ratio: 16 / 10; border-radius: var(--radius-lg); background: #ece8e0; box-shadow: var(--shadow); }
.case-hero__media img { width: 100%; height: 100%; object-fit: cover; }

.case-gallery-section { padding: clamp(70px, 9vw, 125px) 0; background: #fff; }
.case-gallery__head { display: grid; grid-template-columns: 1fr minmax(300px, .75fr); align-items: end; gap: 50px; margin-bottom: 48px; }
.case-gallery__head h2 { font-size: clamp(2.2rem, 4vw, 3.8rem); }
.case-gallery__head p { max-width: 54ch; padding-bottom: 8px; color: var(--color-text-muted); }
.case-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.case-gallery__item { overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-bg); }
.case-gallery__item:first-child { grid-column: 1 / -1; }
.case-gallery__button { display: block; width: 100%; padding: 0; border: 0; background: transparent; cursor: zoom-in; }
.case-gallery__item img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; background: #f3f0ea; transition: transform .4s ease; }
.case-gallery__item:hover img { transform: scale(1.012); }
.case-gallery__item figcaption { padding: 13px 17px; color: var(--color-text-soft); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; }

.case-next-step { padding: clamp(62px, 8vw, 95px) 0; background: linear-gradient(145deg, #1e1c19, #34302b); }
.case-next-step__inner { display: flex; align-items: end; justify-content: space-between; gap: 50px; }
.case-next-step h2 { max-width: 18ch; color: #fff; font-size: clamp(2.1rem, 4vw, 3.8rem); }
.btn--light { flex: 0 0 auto; background: #fff; color: var(--color-ink); }
.btn--light:hover { background: #e8dece; }
.case-footer { padding: 27px 0; background: #171614; color: #8f8980; font-size: .72rem; }
.case-footer .container { display: flex; justify-content: space-between; gap: 24px; }
.case-footer a { color: #cbc4ba; }

.case-lightbox { width: min(94vw, 1500px); max-width: none; padding: 48px 64px 30px; border: 0; border-radius: var(--radius-lg); background: #171614; color: #fff; }
.case-lightbox::backdrop { background: rgba(18,17,15,.86); backdrop-filter: blur(8px); }
.case-lightbox figure { margin: 0; }
.case-lightbox figure img { display: block; width: 100%; max-height: 78vh; object-fit: contain; }
.case-lightbox figcaption { padding-top: 15px; color: #aaa39a; font-size: .72rem; letter-spacing: .09em; text-align: center; }
.case-lightbox__close, .case-lightbox__nav { position: absolute; z-index: 2; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; background: rgba(20,19,17,.72); color: #fff; }
.case-lightbox__close { top: 12px; right: 12px; width: 38px; height: 38px; font-size: 1.45rem; }
.case-lightbox__nav { top: 50%; width: 44px; height: 44px; transform: translateY(-50%); }
.case-lightbox__nav--prev { left: 10px; }
.case-lightbox__nav--next { right: 10px; }

@media (max-width: 1179px) {
  .case-switcher { position: sticky; top: 82px; display: grid; grid-template-columns: auto minmax(0, 1fr); border-width: 0 0 1px; box-shadow: 0 8px 24px rgba(42,35,26,.08); }
  .case-switcher__head { min-height: 58px; padding: 11px 16px; border-right: 1px solid var(--color-border); border-bottom: 0; }
  .case-switcher__head strong { width: 26px; height: 26px; }
  .case-switcher__list { display: flex; overflow-x: auto; }
  .case-switcher__link { min-width: 210px; flex: 0 0 auto; border-right: 1px solid rgba(228,222,212,.75); border-bottom: 0; }
}

@media (max-width: 900px) {
  .case-switcher { top: 72px; }
  .case-nav { height: 72px; }
  .case-nav__inner .nav__logo-image { width: 145px; }
  .case-hero__inner { grid-template-columns: 1fr; }
  .case-hero__copy { max-width: 700px; }
  .case-hero h1 { max-width: 16ch; }
  .case-hero__media { order: -1; }
  .case-gallery__head { grid-template-columns: 1fr; gap: 18px; }
}

@media (max-width: 620px) {
  .case-switcher { top: 72px; grid-template-columns: 92px minmax(0, 1fr); }
  .case-switcher__head { min-height: 54px; gap: 7px; padding: 9px 10px; }
  .case-switcher__head span { font-size: .6rem; letter-spacing: .08em; }
  .case-switcher__head strong { width: 24px; height: 24px; font-size: .65rem; }
  .case-switcher__link { min-width: 185px; padding: 10px 12px; }
  .case-nav__actions { gap: 12px; }
  .case-back > span:last-child { display: none; }
  .case-nav .langSwitch { padding: 3px; }
  .case-nav .langSwitch__btn { padding: 5px 8px; }
  .case-hero { padding-top: 42px; }
  .case-hero__inner { gap: 35px; }
  .case-hero h1 { font-size: clamp(2.25rem, 11vw, 3.4rem); }
  .case-gallery { grid-template-columns: 1fr; }
  .case-gallery__item:first-child { grid-column: auto; }
  .case-next-step__inner { align-items: flex-start; flex-direction: column; }
  .case-next-step .btn { width: 100%; }
  .case-footer .container { flex-direction: column; }
  .case-lightbox { width: 96vw; padding: 50px 8px 24px; }
  .case-lightbox__nav { top: auto; bottom: 12px; }
}