@layer layout {
  .case-shell,
  .case-hero {
    width: min(calc(100% - 3rem), var(--container));
    margin-inline: auto;
  }

  .case-shell { padding-block: var(--space-section); }

  .case-hero {
    min-height: min(870px, 94svh);
    padding-top: calc(var(--header-height) + clamp(4rem, 10vh, 7rem));
    padding-bottom: clamp(4rem, 9vh, 7rem);
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr);
    align-items: end;
    gap: clamp(3rem, 9vw, 9rem);
  }

  .case-hero h1 {
    max-width: 10ch;
    margin-top: 1.25rem;
    font-size: clamp(3.3rem, 8vw, 7.5rem);
  }

  .case-hero__role {
    margin-top: 1.2rem;
    color: var(--color-blue-light);
    font-family: var(--font-display);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 600;
  }

  .case-overview {
    display: grid;
    grid-template-columns: minmax(220px, .55fr) minmax(0, 1.45fr);
    gap: clamp(3rem, 10vw, 10rem);
    border-top: 1px solid var(--color-line);
  }

  .case-overview__copy h2,
  .case-heading h2 { margin-top: 1.1rem; }

  .case-overview__copy > p {
    max-width: 780px;
    margin-top: 1.5rem;
    font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  }

  .case-heading {
    max-width: 880px;
    margin-bottom: clamp(2.5rem, 6vw, 5rem);
  }
}

@layer components {
  .case-hero h1 {
    background: linear-gradient(112deg, #fff 10%, #d6e2f5 43%, #60a5fa 76%, #a855f7);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
  }

  .case-hero h1 a { color: inherit; }
  .case-hero h1 a::after { margin-left: .3em; color: var(--color-muted); font-size: .3em; vertical-align: top; content: "↗"; }

  .case-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: .55rem;
    color: var(--color-muted);
    font-size: .74rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
  }

  .case-breadcrumb a { transition: color var(--transition-fast); }
  .case-breadcrumb a:hover { color: var(--color-blue-light); }

  .case-hero__panel {
    padding: clamp(1.4rem, 3vw, 2rem);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--gradient-surface);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(20px);
  }

  .case-hero__panel dl { margin: 0; display: grid; }
  .case-hero__panel dl > div { padding-block: .9rem; display: flex; justify-content: space-between; gap: 1.5rem; border-bottom: 1px solid var(--color-line); font-size: .78rem; }
  .case-hero__panel dl > div:first-child { padding-top: 0; }
  .case-hero__panel dt { color: var(--color-muted); }
  .case-hero__panel dd { margin: 0; color: var(--color-text-soft); text-align: right; }
  .case-external { margin-top: 1.2rem; display: flex; justify-content: space-between; color: var(--color-blue-light); font-size: .78rem; font-weight: 700; }

  .case-overview__aside > p:last-child {
    margin-top: 1.5rem;
    padding-left: 1.2rem;
    border-left: 1px solid var(--color-blue-light);
    font-size: .9rem;
  }

  .responsibility-section {
    border-block: 1px solid var(--color-line);
    background: rgba(255,255,255,.016);
  }

  .responsibility-list {
    counter-reset: responsibility;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--color-line);
    border-left: 1px solid var(--color-line);
  }

  .responsibility-list li {
    counter-increment: responsibility;
    min-height: 220px;
    padding: clamp(1.3rem, 3vw, 2rem);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
    color: var(--color-text-soft);
    font-size: clamp(.9rem, 1.4vw, 1.02rem);
    transition: background var(--transition-base);
  }

  .responsibility-list li:hover { background: var(--color-surface); }
  .responsibility-list li::before { margin-bottom: auto; color: var(--color-blue-light); font-family: var(--font-display); font-size: .7rem; font-weight: 700; content: counter(responsibility, decimal-leading-zero); }

  .case-details-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }

  .case-detail-card {
    min-height: 390px;
    padding: clamp(1.5rem, 4vw, 3rem);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: var(--gradient-surface);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  }

  .case-detail-card:hover { transform: translateY(-6px); border-color: rgba(96,165,250,.35); box-shadow: var(--shadow-soft), var(--shadow-blue); }
  .case-detail-card--accent { background: linear-gradient(145deg, rgba(59,130,246,.11), rgba(168,85,247,.06), rgba(255,255,255,.02)); }
  .case-detail-card > p:first-child { color: var(--color-blue-light); font-size: .72rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
  .case-detail-card h3 { max-width: 16ch; margin-top: auto; font-size: clamp(1.8rem, 3.5vw, 3rem); }
  .case-detail-card > p:not(:first-child) { margin-top: 1.2rem; }
  .case-tags { margin-top: 1.5rem; display: flex; flex-wrap: wrap; gap: .55rem; }
  .case-tags li { padding: .5rem .75rem; border: 1px solid var(--color-line); border-radius: var(--radius-pill); color: var(--color-text-soft); font-size: .72rem; }

  .case-navigation {
    padding-block: clamp(2rem, 5vw, 4rem);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--color-line);
  }

  .case-navigation a { padding: 1.4rem 0; display: flex; flex-direction: column; gap: .35rem; }
  .case-navigation a:last-child { align-items: flex-end; border-left: 1px solid var(--color-line); text-align: right; }
  .case-navigation span { color: var(--color-muted); font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
  .case-navigation strong { font-family: var(--font-display); font-size: clamp(1.1rem, 2vw, 1.5rem); }
}

@layer responsive {
  @media (max-width: 820px) {
    .case-hero { min-height: auto; grid-template-columns: 1fr; align-items: start; }
    .case-hero__panel { max-width: 620px; }
    .case-overview { grid-template-columns: 1fr; }
  }

  @media (max-width: 680px) {
    .case-shell,
    .case-hero { width: min(calc(100% - 2rem), var(--container)); }
    .case-hero h1 { font-size: clamp(3rem, 16vw, 5.5rem); }
    .responsibility-list,
    .case-details-grid { grid-template-columns: 1fr; }
    .responsibility-list li { min-height: 190px; }
  }

  @media (max-width: 480px) {
    .case-navigation { grid-template-columns: 1fr; }
    .case-navigation a:last-child { align-items: flex-start; border-top: 1px solid var(--color-line); border-left: 0; text-align: left; }
  }
}