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var(--border-medium);box-shadow:var(--card-shadow);border-radius:18px;flex-direction:column;justify-content:space-between;padding:clamp(28px,3vw,42px);display:flex;position:relative;overflow:hidden}.shuffle-kicker-row{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.shuffle-counter{font-family:var(--font-mono);color:var(--accent);letter-spacing:.08em;font-size:13px;font-weight:700}.shuffle-category-pill{font-family:var(--font-mono);background:var(--bg-surface-alt);border:1px solid var(--border-subtle);color:var(--text-muted);border-radius:9999px;padding:4px 12px;font-size:11.5px;font-weight:600}.shuffle-course-title{letter-spacing:-.035em;color:var(--text-main);margin:0 0 14px;font-size:clamp(26px,2.5vw,36px);font-weight:800;line-height:1.15}.shuffle-course-summary{color:var(--text-muted);margin:0 0 24px;font-size:15px;line-height:1.65}.shuffle-meta-row{border-top:1px solid var(--border-subtle);border-bottom:1px solid 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.check-icon{color:var(--accent);flex-shrink:0;font-weight:800}.shuffle-tools-row{flex-wrap:wrap;gap:8px;margin-bottom:28px;display:flex}.tool-badge{font-family:var(--font-mono);background:var(--bg-surface-alt);color:var(--text-main);border:1px solid var(--border-medium);border-radius:6px;padding:4px 10px;font-size:11.5px}.shuffle-controls-row{border-top:1px solid var(--border-subtle);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding-top:20px;display:flex}.shuffle-btn-group{align-items:center;gap:8px;display:flex}.shuffle-nav-btn{cursor:pointer;border-radius:8px;justify-content:center;align-items:center;width:44px;min-width:44px;height:44px;padding:0;font-size:18px;font-weight:700;display:inline-flex}.shuffle-link-group{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.shuffle-explore-btn,.shuffle-all-btn{border-radius:8px;align-items:center;gap:6px;height:44px;display:inline-flex}.shuffle-deck-container{justify-content:center;align-items:center;padding:20px 0;display:flex}.shuffle-deck-wrapper{width:100%;max-width:460px;height:520px;position:relative}.shuffle-card-item{background:var(--bg-surface-raised);border:1px solid var(--border-medium);cursor:grab;-webkit-user-select:none;user-select:none;touch-action:pan-y;border-radius:18px;width:100%;position:absolute;top:0;left:0;overflow:hidden;box-shadow:0 16px 40px #00000047}.shuffle-card-item:active{cursor:grabbing}.shuffle-card-item.is-top-card{border-color:var(--border-medium);box-shadow:0 20px 48px #00000061}.shuffle-card-media{background:#000;width:100%;height:230px;position:relative;overflow:hidden}.shuffle-card-img{object-fit:cover;transition:transform .5s var(--ease)}.shuffle-card-item:hover .shuffle-card-img{transform:scale(1.04)}.shuffle-media-overlay{background:linear-gradient(#0000 40%,#0c0e12d9 100%);position:absolute;inset:0}.shuffle-card-hud{z-index:2;justify-content:space-between;align-items:center;display:flex;position:absolute;top:14px;left:14px;right:14px}.card-hud-number{font-family:var(--font-mono);color:var(--accent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0c0e12bf;border:1px solid #ffffff26;border-radius:4px;padding:3px 8px;font-size:11px;font-weight:800}.card-hud-badge{font-family:var(--font-mono);letter-spacing:.05em;color:#fff;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0c0e12bf;border:1px solid #ffffff26;border-radius:4px;padding:3px 8px;font-size:10.5px;font-weight:700}.shuffle-card-body{padding:22px}.shuffle-card-title-row{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.shuffle-card-title-row h4{color:var(--text-main);margin:0;font-size:21px;font-weight:800}.card-badge-projects{font-family:var(--font-mono);color:var(--accent);background:#f5ba131a;border:1px solid #f5ba1340;border-radius:4px;padding:2px 8px;font-size:11px}.shuffle-card-desc{color:var(--text-muted);-webkit-line-clamp:3;-webkit-box-orient:vertical;margin:0 0 16px;font-size:13.5px;line-height:1.55;display:-webkit-box;overflow:hidden}.shuffle-card-footer{border-top:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding-top:14px;font-size:12px;display:flex}.card-duration-tag{font-family:var(--font-mono);color:var(--text-subtle);font-weight:600}.card-hint-text{font-family:var(--font-mono);color:var(--accent);font-size:11px;font-weight:600}@media (max-width:991px){.shuffle-layout-grid{grid-template-columns:1fr;gap:36px}.shuffle-deck-wrapper{max-width:400px;height:500px}}