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8px;margin-left:-8px}.empty{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:40px 32px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md)}.empty-icon{display:grid;place-items:center;width:36px;height:36px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--line);color:var(--ink-3);margin-bottom:4px}.empty strong{font-size:17px;font-weight:700;letter-spacing:-.015em;color:var(--ink)}.empty p{max-width:52ch;font-size:14px;line-height:1.5;color:var(--ink-3)}.empty .btn-ghost{margin-top:8px}.skeleton-study,.skeleton-list{padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md)}.skeleton-study{display:flex;flex-direction:column;gap:12px}.skeleton-list{display:flex;flex-direction:column;gap:16px;padding:0;background:transparent;border:0}.skel{border-radius:var(--radius-xs);background:linear-gradient(90deg,var(--surface-2) 0%,var(--surface-3) 40%,var(--surface-2) 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