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video{border-radius:0!important}.preview-box .pv-player iframe{border-radius:0!important}.preview-box .pv-overlay{position:absolute;inset:0;z-index:3;background:#080c18d1;color:#fff;display:flex;align-items:center;justify-content:center;padding:18px}.preview-box .pv-overlay[hidden]{display:none}.preview-box .pv-countdown-card{display:flex;gap:20px;align-items:center;width:100%;max-width:520px;background:#ffffff0f;border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:18px 22px}.preview-box .pv-ring{width:64px;height:64px;flex:0 0 64px;border-radius:50%;border:4px solid rgba(255,255,255,.18);border-top-color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:26px}.preview-box .pv-cd-body{min-width:0;display:flex;flex-direction:column;gap:4px}.preview-box .pv-eyebrow{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#b9c7f5}.preview-box .pv-next-title{font-family:var(--font-display);font-weight:700;font-size:18px}.preview-box .pv-muted-light{font-size:13px;color:#c9d1e3}.preview-box .pv-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}.preview-box .pv-btn-light,.preview-box .pv-btn-ghost{min-height:40px;padding:0 16px;border-radius:var(--radius);font-family:inherit;font-weight:700;font-size:14px;cursor:pointer}.preview-box .pv-btn-light{border:0;background:#fff;color:#0e1b33}.preview-box .pv-btn-ghost{border:1px solid rgba(255,255,255,.5);background:transparent;color:#fff}.preview-box .pv-career{background:#0e1b33f5;overflow-y:auto}.preview-box .pv-career-card{width:100%;max-width:600px;display:flex;flex-direction:column;gap:10px}.preview-box .pv-career-title{margin:0;font-family:var(--font-display);font-size:22px;color:#fff}.preview-box .pv-learn{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 18px;font-size:14px}.preview-box .pv-learn li{display:flex;gap:8px;align-items:flex-start}.preview-box .pv-list{background:var(--surface);display:flex;flex-direction:column;min-width:0;border-left:1px solid var(--border)}.preview-box .pv-list-head{padding:12px 14px 8px;border-bottom:1px solid var(--border)}.preview-box .pv-list-title{font-family:var(--font-display);font-weight:700;font-size:15px}.preview-box .pv-muted{font-size:12px;color:var(--text2);margin-top:2px}.preview-box .pv-rows{display:flex;flex-direction:column;overflow-y:auto}.preview-box .pv-row{display:flex;gap:10px;align-items:center;width:100%;text-align:left;padding:10px 14px;border:0;border-left:3px solid transparent;background:transparent;color:var(--text1);font-family:inherit;cursor:pointer;min-height:44px}.preview-box .pv-row:hover{background:#2f5fe00f}.preview-box .pv-row.is-current{background:#2f5fe01f;border-left-color:var(--accent1)}.preview-box .pv-row-text{flex:1;min-width:0;display:flex;flex-direction:column}.preview-box .pv-row-title{font-size:13px;font-weight:600}.preview-box .pv-row.is-current .pv-row-title{font-weight:700}.preview-box .pv-row-sub{font-size:11.5px;color:var(--text2)}.preview-box .pv-row-sub:empty{display:none}.preview-box .pv-row-dur{font-size:11.5px;color:var(--text2);flex-shrink:0}.preview-box .pv-locked{margin-top:auto;display:flex;gap:8px;align-items:center;padding:11px 14px;border-top:1px solid var(--border);color:var(--text2);font-size:12.5px}.pv-open-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px}.preview-box.pv-solo .pv-stage{border:1px solid var(--border);border-radius:14px;overflow:hidden}.preview-box a.pv-btn-ghost{display:inline-flex;align-items:center;text-decoration:none}.pv-back-btn{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;margin-bottom:14px}.side-teacher{margin:12px 0;display:flex;flex-direction:column;gap:6px}.side-teacher-label{font-size:12px;color:var(--text2)}.side-teacher-link{display:flex;align-items:center;gap:10px;color:var(--text1);font-weight:700;font-size:14px;text-decoration:none}.side-teacher-avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;flex-shrink:0}.side-teacher-initial{background:var(--gradient);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}@media (max-width: 900px){.preview-box .pv-grid{grid-template-columns:minmax(0,1fr)}.preview-box .pv-list{border-left:0;border-top:1px solid var(--border)}.preview-box .pv-countdown-card{gap:14px;padding:14px}.preview-box .pv-ring{width:52px;height:52px;flex-basis:52px;font-size:22px}.preview-box .pv-learn{grid-template-columns:minmax(0,1fr)}.preview-box .pv-career{position:relative;inset:auto}.mobile-buy-bar.has-preview .pv-open-btn{flex:0 0 auto}}