@keyframes _si{from{opacity:0}to{opacity:1}}

.legacy-content .skill-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }.legacy-content .skill-btn {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; border-radius: var(--radius);
  border: 1.5px solid var(--border); background: var(--card);
  cursor: pointer; transition: all 0.2s; font-family: inherit;
  text-align: left; width: 100%; min-height: 44px;
  box-shadow: var(--shadow-card);
}.legacy-content .skill-btn:hover { border-color: rgba(0,0,0,0.15); }.legacy-content .skill-btn.active { border-color: var(--purple); background: rgba(124,58,237,0.05); }.legacy-content .snum {
  width: 34px; height: 34px; border-radius: 9px;
  background: rgba(0,0,0,0.05); color: var(--sub);
  font-size: 14px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: all 0.2s;
}.legacy-content .skill-btn.active .snum { background: var(--purple); color: white; }.legacy-content .st h4 { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 2px; transition: color 0.2s; }.legacy-content .skill-btn.active .st h4 { color: var(--purple); }.legacy-content .st p { font-size: 13px; color: var(--sub); line-height: 1.5; }.legacy-content .formula-box {
  background: rgba(124,58,237,0.06); border: 1.5px solid rgba(124,58,237,0.18);
  border-radius: var(--radius); padding: 16px 20px; margin-top: 16px;
}.legacy-content .feq { font-size: 15px; font-weight: 800; color: var(--purple); font-family: "SF Mono", Menlo, monospace; margin-bottom: 6px; }.legacy-content .fdesc { font-size: 14px; color: var(--sub); line-height: 1.7; }.legacy-content .cmp-hd { font-size: 14px; font-weight: 800; color: var(--sub); letter-spacing: 0.4px; margin-bottom: 12px; }.legacy-content .cmp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }.legacy-content .cmp-box {
  border-radius: var(--radius); display: flex; flex-direction: column;
  overflow: hidden; border: 1.5px solid transparent;
}.legacy-content .cmp-box.bad { border-color: rgba(220,38,38,0.25); background: rgba(220,38,38,0.04); }.legacy-content .cmp-box.good { border-color: rgba(22,163,74,0.3); background: rgba(22,163,74,0.04); }.legacy-content .cb-label { padding: 10px 16px; font-size: 14px; font-weight: 800; border-bottom: 1px solid rgba(0,0,0,0.06); }.legacy-content .cmp-box.bad .cb-label { color: var(--danger); }.legacy-content .cmp-box.good .cb-label { color: var(--success); }.legacy-content .cb-prompt {
  padding: 12px 16px; font-family: "SF Mono", "Fira Code", Menlo, monospace;
  font-size: 13px; color: var(--sub); background: rgba(0,0,0,0.04);
  line-height: 1.6; white-space: pre-wrap; min-height: 20px;
}.legacy-content .cb-result {
  padding: 12px 16px; font-size: 14px; color: var(--text);
  line-height: 1.75; min-height: 120px; white-space: pre-wrap;
}.legacy-content .cursor {
  display: inline-block; width: 2px; height: 16px;
  background: var(--text); vertical-align: middle;
  animation: blink 0.7s steps(1) infinite; margin-left: 1px;
}@keyframes blink{ 0%,100%{opacity:1} 50%{opacity:0} }.legacy-content .ctrl-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 14px; }.legacy-content .btn {
  padding: 11px 24px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 700; border: none; cursor: pointer;
  font-family: inherit; transition: all 0.15s; min-height: 44px;
}.legacy-content .btn-play { background: var(--purple); color: white; }.legacy-content .btn-play:hover { filter: brightness(1.1); }.legacy-content .btn-play:disabled { opacity: 0.3; cursor: not-allowed; }.legacy-content .btn-rst { background: var(--card); color: var(--sub); border: 1.5px solid var(--border); }.legacy-content .hint { font-size: 13px; color: var(--sub); }@media (max-width: 768px){.legacy-content .skill-list { grid-template-columns: 1fr; }.legacy-content .cmp-grid { grid-template-columns: 1fr; }}

.legacy-content .xa-tldr {margin:18px 0 4px;padding:14px 18px;background:rgba(0,102,255,0.04);border:1px solid rgba(0,102,255,0.16);border-radius:10px}.legacy-content .xa-tldr .xa-tldr-tag {display:block;font-size:11px;font-weight:800;letter-spacing:1px;color:var(--accent,#0066ff);margin-bottom:6px}.legacy-content .xa-tldr p {margin:0;font-size:15px;line-height:1.8;color:var(--text,#1f2937)}