.usage-guide{margin:0 0 14px;border:1px solid #bbd8d2;border-radius:12px;background:linear-gradient(110deg,#f0faf7,#fff);box-shadow:0 2px 10px rgba(16,80,75,.04);overflow:hidden}
.usage-guide summary{display:flex;align-items:center;gap:12px;min-height:54px;padding:10px 16px;cursor:pointer;list-style:none;color:#174e4d}
.usage-guide summary::-webkit-details-marker{display:none}
.usage-guide summary:focus-visible{outline:3px solid #51aaa0;outline-offset:-3px}
.usage-guide-icon{display:grid;place-items:center;flex:0 0 34px;width:34px;height:34px;border-radius:9px;background:#d8ee77;color:#254842;font-size:18px}
.usage-guide-title{display:grid;gap:2px;min-width:0}.usage-guide-title strong{font-size:14px}.usage-guide-title small{font-size:11px;color:#647f7d;font-weight:400}
.usage-guide-toggle{margin-left:auto;flex:0 0 auto;font-size:12px;color:#087e7a;font-weight:600}.usage-guide-toggle:after{content:'展开说明 ↓'}.usage-guide[open] .usage-guide-toggle:after{content:'收起说明 ↑'}
.usage-guide-content{max-height:min(72vh,760px);overflow:auto;overscroll-behavior:contain;border-top:1px solid #dceae7;padding:18px 20px 22px;background:#fff;color:#304d50;font-size:13px;line-height:1.7}
.usage-guide-lead{margin:0 0 12px;color:#567073}.usage-guide-links{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:17px}.usage-guide-links a{display:inline-block;padding:5px 9px;border:1px solid #d7e8e4;border-radius:7px;background:#f4faf8;color:#176d68;text-decoration:none;font-size:12px}.usage-guide-links a:hover{background:#e4f5f0}
.usage-guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.usage-guide-card{min-width:0;padding:14px 16px;border:1px solid #e0ebe9;border-radius:10px;background:#fbfdfc;scroll-margin-top:12px}.usage-guide-card h3{margin:0 0 8px;color:#0d5855;font-size:14px}.usage-guide-card ol,.usage-guide-card ul{margin:0;padding-left:20px}.usage-guide-card li+li{margin-top:5px}.usage-guide-card p{margin:6px 0 0}.usage-guide-card b{color:#163f41}.usage-guide-wide{grid-column:1/-1}.usage-guide-paths{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:9px 0 0}.usage-guide-paths div{border:1px solid #d7e9e4;border-radius:8px;padding:9px 10px;background:#f4faf8}.usage-guide-paths strong{display:block;color:#0d6660;margin-bottom:3px}.usage-guide-warning{margin-top:12px;padding:10px 12px;border-radius:8px;background:#fff8eb;border:1px solid #f0dfbb;color:#765b31}.usage-guide-note{margin-top:12px;color:#6f8385;font-size:12px}
@media(max-width:760px){.usage-guide{margin-bottom:12px}.usage-guide summary{padding:10px 12px;gap:9px}.usage-guide-title small{font-size:10px}.usage-guide-toggle{font-size:11px}.usage-guide-content{max-height:68dvh;padding:14px 12px 18px}.usage-guide-grid,.usage-guide-paths{grid-template-columns:1fr}.usage-guide-wide{grid-column:auto}.usage-guide-card{padding:12px}}