.case-videos { background: linear-gradient(180deg, #f4f8ff, #fff); }
.case-video-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.case-video-card { overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: var(--shadow-sm); }
.case-video-cover { display: block; position: relative; width: 100%; padding: 0; overflow: hidden; aspect-ratio: 16 / 9; border: 0; background: #e5eef8; cursor: pointer; }
.case-video-cover img { display: block; width: 100%; height: 100%; object-fit: contain; transition: transform .3s; }
.case-video-cover::after { position: absolute; inset: 0; content: ''; background: linear-gradient(transparent 45%, #071b3b73); pointer-events: none; }
.case-play { position: absolute; z-index: 1; top: 50%; left: 50%; display: grid; place-items: center; width: 56px; height: 56px; border: 1px solid #ffffffb3; border-radius: 50%; background: #1e66dbe6; color: #fff; box-shadow: 0 8px 28px #06275840; transform: translate(-50%, -50%); }
.case-play svg { width: 24px; height: 24px; fill: currentColor; margin-left: -3px; }
.case-watch { position: absolute; bottom: 12px; right: 16px; z-index: 1; font-size: 12px; color: #fff; }
.case-video-cover:hover img { transform: scale(1.025); }
.case-video-cover:focus-visible { outline: 3px solid var(--brand); outline-offset: -3px; }
.case-video-copy { padding: 24px; }
.case-video-copy > span { color: var(--brand); font-size: 11px; letter-spacing: .08em; }
.case-video-copy h3 { margin: 8px 0; font-size: 21px; color: var(--navy); }
.case-video-copy p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.case-video-dialog { width: min(1000px, calc(100vw - 32px)); max-width: none; max-height: calc(100dvh - 32px); margin: auto; padding: 0; overflow: auto; border: 1px solid #d4e2f5; border-radius: 18px; background: #fff; color: var(--text); box-shadow: 0 24px 100px #0005; }
.case-video-dialog::backdrop { background: #06162bcc; }
.case-player-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 16px 12px 24px; }
.case-player-header h2 { margin: 0; font-size: 18px; }
.case-player-close { display: grid; place-items: center; width: 44px; height: 44px; padding: 0; border: 0; border-radius: 10px; background: #edf3fb; color: #31527a; cursor: pointer; }
.case-player-close svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.case-player-stage { background: #08111e; }
.case-player-stage video { display: block; width: 100%; max-height: calc(100dvh - 160px); aspect-ratio: 16 / 9; object-fit: contain; }
.case-player-feedback { display: flex; align-items: center; justify-content: center; gap: 12px; min-height: 42px; padding: 8px 16px; font-size: 12px; color: var(--muted); }
.case-player-retry { min-height: 36px; padding: 5px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--brand-soft); color: var(--brand); cursor: pointer; }
.case-player-retry[hidden] { display: none; }
.case-video-dialog button:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
@media (max-width: 860px) { .case-video-grid { gap: 16px; }.case-video-copy { padding: 18px; } }
@media (max-width: 600px) { .case-video-grid { grid-template-columns: 1fr; gap: 24px; }.case-video-dialog { width: calc(100vw - 16px); border-radius: 12px; }.case-player-header { padding-left: 16px; } }
@media (prefers-reduced-motion: reduce) { .case-video-cover img { transition: none; }.case-video-cover:hover img { transform: none; } }