:root{--bg:#0b0f14;--surface:#121820;--card:#161d27;--line:#263040;--text:#e8eef6;--muted:#8a97a8;--accent:#4c9aff;--accent-d:#2f7de0;--ok:#3fb950;--warn:#d29922;--bad:#e5534b;--radius:12px}*{box-sizing:border-box}body,html{margin:0}body{background:var(--bg);color:var(--text);font:15px/1.5 Inter,system-ui,-apple-system,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--accent)}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:rgba(11,15,20,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.topbar-in{max-width:1560px;margin:0 auto;padding:12px 24px;gap:24px}.brand,.topbar-in{display:flex;align-items:center}.brand{gap:12px;min-width:0}.brand-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#4c9aff,#7c5cff);display:grid;place-items:center;font-weight:800;color:#fff;font-size:18px;flex:none}.brand-name{font-weight:700;letter-spacing:.2px}.brand-sub{color:var(--muted);font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.progress{margin-left:auto;width:240px}.progress-top{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:4px}.progress-top b{color:var(--text)}.bar{height:6px;background:var(--line);border-radius:99px;overflow:hidden}.bar>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--ok));transition:width .4s}.tabs{max-width:1560px;margin:0 auto;padding:0 24px;display:flex;gap:4px;overflow-x:auto}.tabs button{background:none;border:0;border-bottom:2px solid transparent;color:var(--muted);padding:10px 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var(--line);border-radius:10px;min-height:120px;display:grid;place-items:center;overflow:hidden;padding:8px}.empty{color:var(--muted);font-size:13px}.pv-img{max-width:100%;max-height:200px;object-fit:contain;border-radius:6px}.pv-audio,.pv-video{width:100%}.pv-video{max-height:240px;border-radius:6px}.pv-3d{width:100%;height:260px;background:radial-gradient(circle at 50% 40%,#1b2533,#0d131b);border-radius:8px}.pv-3d.tall{height:380px}label.drop{display:flex;flex-direction:column;align-items:center;gap:2px;padding:14px 12px;margin:0;border:2px dashed var(--line);border-radius:10px;color:var(--muted);font-size:13px;font-weight:400;text-align:center;cursor:pointer;transition:all .15s}label.drop 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