:root{
  --bg:#f6f5f1; --panel:#ffffff; --ink:#23211c; --muted:#6f6a60;
  --line:#e4e0d6; --jade:#0f6e56; --jade-soft:#e1f5ee; --indigo:#534ab7;
  --indigo-soft:#eeedfe; --amber:#ba7517; --amber-soft:#faefda; --red:#a32d2d;
  --red-soft:#fcebeb; --green:#3b6d11; --green-soft:#eaf3de;
  --radius:14px; --shadow:0 1px 3px rgba(0,0,0,.06),0 8px 24px rgba(0,0,0,.05);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--ink); font-size:14px; line-height:1.65;
}
button{font-family:inherit;cursor:pointer}

/* topbar */
.topbar{display:flex;align-items:center;gap:20px;padding:12px 22px;background:var(--panel);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:12px;min-width:230px}
.brand-mark{width:38px;height:38px;border-radius:10px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}
.brand-title{font-weight:600;font-size:15px}
.brand-sub{font-size:12px;color:var(--muted)}
.progress-wrap{flex:1;max-width:520px}
.progress-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:5px}
.progress-track{height:9px;background:var(--line);border-radius:99px;overflow:hidden}
.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--jade),var(--indigo));transition:width .35s ease}
.topnav{display:flex;gap:8px}
.navbtn{border:1px solid var(--line);background:var(--panel);padding:8px 14px;border-radius:10px;
  font-size:13px;color:var(--ink);transition:.15s}
.navbtn:hover{border-color:var(--jade)}
.navbtn.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.navbtn.icon{padding:8px 11px}

/* layout */
.layout{display:flex;height:calc(100vh - 64px)}
.sidebar{width:300px;flex-shrink:0;border-right:1px solid var(--line);background:var(--panel);
  overflow-y:auto;padding:18px 16px}
.sidebar-title{font-size:12px;color:var(--muted);letter-spacing:.1em;margin-bottom:12px}
.content{flex:1;overflow-y:auto;padding:26px 34px;max-width:1000px;margin:0 auto;width:100%}

/* path map */
.pathmap{display:flex;flex-direction:column;gap:10px}
.pnode{display:flex;gap:12px;align-items:flex-start;padding:12px 13px;border:1px solid var(--line);
  border-radius:12px;background:var(--panel);cursor:pointer;transition:.15s;position:relative}
.pnode:hover{border-color:var(--jade);transform:translateX(2px)}
.pnode.active{border-color:var(--jade);background:var(--jade-soft)}
.pnode .lv{width:30px;height:30px;border-radius:8px;flex-shrink:0;display:flex;align-items:center;
  justify-content:center;font-size:13px;font-weight:600;background:var(--indigo-soft);color:var(--indigo)}
.pnode.done .lv{background:var(--jade);color:#fff}
.pnode .ptitle{font-weight:600;font-size:13.5px}
.pnode .pstep{font-size:12px;color:var(--muted);margin-top:2px}
.pnode .pcheck{position:absolute;right:12px;top:12px;font-size:12px;color:var(--jade)}
.sidebar-foot{margin-top:16px}

/* stage detail */
.stage-head{margin-bottom:18px}
.stage-eyebrow{font-size:12px;color:var(--jade);font-weight:600;letter-spacing:.05em}
.stage-title{font-size:23px;font-weight:700;margin:4px 0 8px}
.goal{background:var(--indigo-soft);border-left:3px solid var(--indigo);padding:12px 15px;
  border-radius:0 10px 10px 0;color:#2c2a55;margin-bottom:20px}
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:18px;flex-wrap:wrap}
.tab{padding:9px 15px;border:none;background:none;font-size:13.5px;color:var(--muted);
  border-bottom:2px solid transparent}
.tab.active{color:var(--ink);border-bottom-color:var(--jade);font-weight:600}
.panel{display:none}
.panel.active{display:block}

/* steps */
.step{display:flex;gap:12px;padding:13px 14px;border:1px solid var(--line);border-radius:11px;
  margin-bottom:10px;background:var(--panel)}
.step input{margin-top:4px;width:18px;height:18px;accent-color:var(--jade);flex-shrink:0;cursor:pointer}
.step .stxt{flex:1}
.step .stxt h4{margin:0 0 4px;font-size:14px}
.step.checked{background:var(--green-soft);border-color:#cfe0b0}
.step.checked h4{text-decoration:line-through;color:var(--muted)}
.step .sbody{font-size:13px;color:#3a3833}
.step .stuck{margin-top:8px;font-size:12px;color:var(--red);border:none;background:none;
  padding:0;text-decoration:underline;cursor:pointer}

/* pitfalls */
.pit{background:var(--red-soft);border:1px solid #f3c9c9;border-radius:12px;padding:14px 16px;margin-bottom:11px}
.pit .pit-name{font-weight:700;color:var(--red);display:flex;align-items:center;gap:7px}
.pit .pit-cause{font-size:12.5px;color:#7a4a4a;margin:6px 0}
.pit .pit-fix{font-size:13.5px;background:#fff;border-radius:8px;padding:9px 11px;border:1px solid var(--line)}
.pit .pit-fix b{color:var(--green)}
.pit .pit-actions{margin-top:9px;display:flex;gap:8px;flex-wrap:wrap}
.minibtn{font-size:12px;border:1px solid var(--line);background:#fff;padding:5px 10px;border-radius:8px;color:var(--ink)}
.minibtn:hover{border-color:var(--jade);color:var(--jade)}

/* tools */
.tooltbl{width:100%;border-collapse:collapse;font-size:13px}
.tooltbl th,.tooltbl td{border:1px solid var(--line);padding:9px 11px;text-align:left}
.tooltbl th{background:var(--bg);font-weight:600}
.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:6px;background:var(--amber-soft);color:var(--amber)}
.tag.must{background:var(--red-soft);color:var(--red)}

/* refs */
.reflist{display:flex;flex-direction:column;gap:9px}
.refitem{display:flex;align-items:center;gap:10px;padding:11px 13px;border:1px solid var(--line);
  border-radius:10px;background:var(--panel);cursor:pointer;transition:.15s}
.refitem:hover{border-color:var(--jade);background:var(--jade-soft)}
.refitem .ric{width:7px;height:7px;border-radius:50%;background:var(--jade);flex-shrink:0}
.refitem .rt{font-size:13.5px;flex:1}

/* library */
.lib-search{display:flex;gap:10px;margin-bottom:16px}
.lib-search input{flex:1;padding:11px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px}
.lib-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px}
.lib-card{border:1px solid var(--line);border-radius:11px;padding:12px 13px;background:var(--panel);
  cursor:pointer;transition:.15s}
.lib-card:hover{border-color:var(--jade);background:var(--jade-soft)}
.lib-card .lcf{font-size:11px;color:var(--muted)}
.lib-card .lct{font-size:13.5px;margin-top:3px;font-weight:500}

/* master drawer */
.master{position:fixed;top:0;right:0;height:100vh;width:380px;background:var(--panel);
  border-left:1px solid var(--line);box-shadow:-10px 0 30px rgba(0,0,0,.08);transform:translateX(100%);
  transition:transform .25s ease;z-index:40;display:flex;flex-direction:column}
.master.open{transform:translateX(0)}
.master-head{padding:15px 18px;border-bottom:1px solid var(--line);font-weight:600;
  display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:#fff}
.xbtn{border:none;background:none;font-size:20px;color:inherit;cursor:pointer;line-height:1}
.master-chips{display:flex;flex-wrap:wrap;gap:6px;padding:12px 14px;border-bottom:1px solid var(--line)}
.chip{font-size:12px;border:1px solid var(--line);background:var(--bg);padding:5px 10px;border-radius:99px;cursor:pointer}
.chip:hover{border-color:var(--jade);color:var(--jade)}
.master-log{flex:1;overflow-y:auto;padding:16px 16px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:88%;padding:10px 13px;border-radius:12px;font-size:13.5px;line-height:1.6}
.msg.bot{background:var(--jade-soft);align-self:flex-start;border-top-left-radius:3px}
.msg.me{background:var(--indigo-soft);align-self:flex-end;border-top-right-radius:3px}
.msg a{color:var(--jade);text-decoration:underline;cursor:pointer}
.master-input{padding:12px 14px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.master-input textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:9px 11px;
  font-family:inherit;font-size:13.5px;resize:none}
.master-input button{background:var(--jade);color:#fff;border:none;padding:10px;border-radius:10px;font-size:14px}

/* modal */
.modal{position:fixed;inset:0;background:rgba(20,18,14,.45);display:none;align-items:center;
  justify-content:center;z-index:50;padding:30px}
.modal.open{display:flex}
.modal-box{background:var(--panel);border-radius:16px;width:min(860px,94vw);max-height:88vh;
  display:flex;flex-direction:column;box-shadow:var(--shadow);overflow:hidden}
.modal-box.small{width:min(520px,94vw)}
.modal-head{padding:14px 20px;border-bottom:1px solid var(--line);font-weight:600;
  display:flex;justify-content:space-between;align-items:center}
.modal-body{padding:22px 26px;overflow-y:auto;font-size:14.5px;line-height:1.75}
.modal-body h1,.modal-body h2,.modal-body h3{margin:1.1em 0 .5em}
.modal-body h1{font-size:21px}.modal-body h2{font-size:18px;color:var(--jade)}
.modal-body h3{font-size:15.5px}
.modal-body table{border-collapse:collapse;width:100%;margin:12px 0;font-size:13.5px}
.modal-body th,.modal-body td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.modal-body th{background:var(--bg)}
.modal-body blockquote{background:var(--indigo-soft);border-left:3px solid var(--indigo);
  margin:12px 0;padding:10px 14px;border-radius:0 10px 10px 0;color:#2c2a55}
.modal-body code{background:var(--bg);padding:2px 5px;border-radius:5px;font-size:12.5px}
.modal-body pre{background:#1f1d18;color:#f3efe6;padding:14px;border-radius:10px;overflow:auto}
.modal-body pre code{background:none;color:inherit;padding:0}
.modal-body a.wl{color:var(--indigo);text-decoration:underline;cursor:pointer}
.modal-body ul,.modal-body ol{margin:8px 0;padding-left:22px}
.hint{font-size:12.5px;color:var(--muted);background:var(--bg);padding:11px 13px;border-radius:9px;margin:0 0 14px}
.modal-body label{display:block;font-size:12.5px;color:var(--muted);margin:10px 0 4px}
.modal-body input{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:13.5px}
.row{display:flex;gap:10px;margin-top:14px}
.primarybtn{background:var(--jade);color:#fff;border:none;padding:10px 16px;border-radius:9px;font-size:14px}
.ghostbtn{background:#fff;border:1px solid var(--line);padding:8px 13px;border-radius:9px;font-size:13px;color:var(--muted)}
.ghostbtn:hover{color:var(--ink)}

.empty{color:var(--muted);text-align:center;padding:50px 0;font-size:14px}
@media(max-width:880px){.sidebar{width:240px}.content{padding:20px}.master{width:100%}}