:root{--bg:#0b1020;--card:#111a2e;--line:#2b3a56;--ink:#e8eefb;--muted:#9caac1;--accent:#8ab4ff;--gold:#d8b877}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 Arial,Helvetica,system-ui,sans-serif}
a{color:var(--accent)}
.help-top{position:sticky;top:0;z-index:5;background:linear-gradient(180deg,var(--bg) 80%,transparent);padding:16px 16px 20px}
.help-head{max-width:1040px;margin:0 auto;display:flex;flex-wrap:wrap;gap:12px 20px;align-items:center;justify-content:space-between}
.help-head h1{margin:0;font-size:24px}.help-head p{margin:2px 0 0;color:var(--muted);font-size:14px}
.help-back{padding:8px 14px;border:1px solid var(--line);border-radius:10px;text-decoration:none;font-weight:700;color:var(--ink)}
.help-search{max-width:1040px;margin:14px auto 0;display:flex;gap:10px;align-items:center}
.help-search input{flex:1;min-width:0;padding:14px 16px;border-radius:12px;border:1px solid var(--line);background:#0f1729;color:var(--ink);font-size:16px}
.help-search small{color:var(--muted);white-space:nowrap}
main{max-width:1040px;margin:0 auto;padding:0 16px 60px}
.help-toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}
.help-toc a{padding:6px 12px;border:1px solid var(--line);border-radius:999px;text-decoration:none;font-size:13px;color:var(--ink)}
.help-block{border:1px solid var(--line);border-radius:16px;background:var(--card);margin:0 0 14px;overflow:hidden}
.help-block>summary{cursor:pointer;list-style:none;padding:16px 20px;font-weight:800;font-size:18px;display:flex;gap:12px;align-items:center}
.help-block>summary::-webkit-details-marker{display:none}
.help-block>summary::before{content:'▶';font-size:12px;color:var(--gold);transition:transform .15s}
.help-block[open]>summary::before{transform:rotate(90deg)}
.help-block>summary small{font-weight:400;color:var(--muted);font-size:13px;margin-left:auto}
.help-body{padding:0 20px 18px}
.help-body h3{font-size:15px;margin:16px 0 6px;color:var(--gold)}
.help-body ol,.help-body ul{padding-left:22px;margin:6px 0}.help-body li{margin:4px 0}
.help-body p{margin:6px 0}
.help-tip{border-left:3px solid var(--gold);padding:8px 12px;background:#ffffff08;border-radius:6px;margin:10px 0;font-size:14px}
.help-path{font-family:Consolas,monospace;font-size:14px;background:#ffffff12;padding:1px 6px;border-radius:5px}
.help-empty{color:var(--muted);text-align:center;padding:30px}
mark{background:#d8b87755;color:inherit;border-radius:3px}
@media (max-width:600px){.help-block>summary small{display:none}}
.help-toc[hidden],.help-block[hidden],.help-empty[hidden]{display:none}