:root{
  --paper:#f3ecdf;
  --paper-deep:#e9dfcd;
  --card:#fffdf7;
  --ink:#22271f;
  --ink-2:#4c5449;
  --muted:#8a8b7f;
  --line:#ded4c2;
  --jade:#2f5d4e;
  --jade-soft:#e6efe9;
  --vermilion:#a8432f;
  --vermilion-soft:#f8e8e2;
  --gold:#b08a4a;
  --sidebar:#1d2620;
  --sidebar-2:#263129;
  --shadow:0 10px 30px rgba(50,44,32,.10);
  --radius:14px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Microsoft YaHei UI","Microsoft YaHei","Segoe UI",sans-serif;
  font-size:14px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  background-image:radial-gradient(circle at 15% 0%,rgba(176,138,74,.08),transparent 40%),radial-gradient(circle at 90% 100%,rgba(47,93,78,.07),transparent 45%);
}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
.hidden{display:none!important}
.muted{color:var(--muted);font-size:12px}
.app{display:grid;grid-template-columns:250px minmax(0,1fr) 350px;height:100vh;overflow:hidden}

/* ---------- sidebar ---------- */
.sidebar{background:linear-gradient(165deg,var(--sidebar),var(--sidebar-2));color:#efe8d8;display:flex;flex-direction:column;padding:22px 16px 16px;border-right:1px solid #141a16}
.brand{display:flex;gap:12px;align-items:center;padding:0 6px 18px}
.brand-mark{width:40px;height:40px;border-radius:11px;background:linear-gradient(145deg,#c9a567,#8c6a33);display:grid;place-items:center;font-family:"Songti SC","SimSun",serif;font-size:22px;color:#1d2620;box-shadow:0 4px 14px rgba(0,0,0,.28)}
.brand-text h1{font-size:15px;margin:0;letter-spacing:.04em;font-weight:600;color:#f5efe1}
.brand-text p{margin:2px 0 0;font-size:11px;color:#9aa89c;letter-spacing:.08em}
.sidebar-actions{display:flex;flex-direction:column;gap:8px;padding:0 2px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.side-section{padding:16px 2px;flex:1;min-height:0;display:flex;flex-direction:column}
.side-title{font-size:11px;letter-spacing:.14em;color:#94a397;margin:0 6px 10px;text-transform:uppercase}
.project-list{overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding-right:2px}
.project-item{border:1px solid transparent;background:rgba(255,255,255,.035);border-radius:10px;padding:9px 10px;text-align:left;color:#e8e1d2;transition:background .14s,border-color .14s}
.project-item:hover{background:rgba(255,255,255,.08)}
.project-item.active{background:rgba(201,165,103,.14);border-color:rgba(201,165,103,.45)}
.project-item .pi-title{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.project-item .pi-meta{font-size:10.5px;color:#93a096;margin-top:2px;display:flex;gap:8px}
.project-item .pi-badge{color:#d9bd83}
.empty-mini{color:#8f9a91;font-size:12px;padding:10px 8px}
.side-foot{display:flex;gap:8px;align-items:flex-start;font-size:10.5px;color:#7f8c82;border-top:1px solid rgba(255,255,255,.08);padding:12px 6px 0;line-height:1.5}
.dot-live{width:7px;height:7px;border-radius:50%;background:#6fbf94;margin-top:5px;flex:none;box-shadow:0 0 0 3px rgba(111,191,148,.14)}

/* ---------- main ---------- */
.main{min-width:0;display:flex;flex-direction:column;height:100vh;position:relative}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 26px 12px;border-bottom:1px solid rgba(120,110,90,.14);background:linear-gradient(180deg,rgba(255,253,247,.75),rgba(255,253,247,0))}
.book-head{flex:1 1 240px;min-width:190px}
.book-head{min-width:0}
.book-head h2{margin:0;font-family:"Songti SC","SimSun",serif;font-size:21px;font-weight:700;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.subline{font-size:11.5px;color:var(--muted);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-actions{display:flex;gap:8px;flex:none}

.banner{margin:10px 26px 0;border:1px solid #e3cfae;background:linear-gradient(90deg,#fbf4e4,#f7ecd8);color:#6d5428;border-radius:10px;padding:9px 13px;font-size:12.5px;display:flex;gap:10px;align-items:center}
.banner .grow{flex:1}
.reading-shell{flex:1;min-height:0;display:flex;flex-direction:column;max-width:940px;width:100%;margin:0 auto;padding:0 30px}
.reading-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 2px;border-bottom:1px dashed rgba(120,110,90,.22);flex-wrap:wrap}
.crumbs{font-size:11.5px;color:var(--muted);letter-spacing:.03em;max-width:300px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.controls{display:flex;gap:8px;flex-wrap:wrap}
.field{display:flex;flex-direction:column;gap:4px;font-size:11px;color:var(--muted)}
.field.compact{flex-direction:row;align-items:center;gap:6px;white-space:nowrap}
select,input,textarea{border:1px solid var(--line);background:#fffdf8;border-radius:8px;padding:6px 9px;outline:none;transition:border-color .14s,box-shadow .14s}
select:focus,input:focus,textarea:focus{border-color:#a9b8a9;box-shadow:0 0 0 3px rgba(47,93,78,.09)}
.field.compact select,.field.compact input{padding:4px 7px;font-size:12px;background:#fbf7ee}
.field.compact input{width:64px}

.story{flex:1;min-height:0;overflow-y:auto;padding:22px 6px 26px;scroll-behavior:smooth}
.story::-webkit-scrollbar{width:9px}
.story::-webkit-scrollbar-thumb{background:#cfc4b0;border-radius:8px;border:2px solid var(--paper)}
.welcome{max-width:620px;margin:8vh auto 0;text-align:center;padding:34px 30px;border:1px solid var(--line);border-radius:20px;background:rgba(255,253,247,.72);box-shadow:var(--shadow)}
.welcome-kicker{font-size:11px;letter-spacing:.3em;color:var(--gold);margin-bottom:10px}
.welcome h3{font-family:"Songti SC","SimSun",serif;font-size:24px;margin:0 0 10px}
.welcome p{color:var(--ink-2);font-size:13.5px;line-height:1.9;margin:0 auto 20px;max-width:480px}
.story-item{max-width:760px;margin:0 auto 18px;padding:0 4px;animation:rise .18s ease-out}
.story-item .si-head{display:flex;align-items:center;gap:8px;margin-bottom:7px}
.si-tag{font-size:10px;letter-spacing:.1em;color:var(--gold);border:1px solid rgba(176,138,74,.35);background:rgba(176,138,74,.07);padding:1px 7px;border-radius:20px}
.si-chapter{font-size:11px;color:var(--muted)}
.si-text{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;font-size:17.5px;line-height:2.0;color:#28251e;white-space:pre-wrap;text-align:justify;letter-spacing:.01em}
.story-item.event .si-text{border-left:3px solid var(--vermilion);background:linear-gradient(90deg,rgba(168,67,47,.045),transparent 80%);padding:12px 16px;border-radius:0 10px 10px 0}
.story-item.action .si-text{border-left:3px solid var(--jade);background:linear-gradient(90deg,rgba(47,93,78,.05),transparent 80%);padding:12px 16px;border-radius:0 10px 10px 0}
.story-item.notice .si-text{font-family:inherit;font-size:13px;color:#6d5a33;background:#faf2df;border:1px solid #eadcbe;border-radius:10px;padding:10px 14px;line-height:1.8}
.si-warning{margin-top:8px;font-size:12px;color:#8d4a32;background:var(--vermilion-soft);border-radius:8px;padding:8px 11px;line-height:1.75;white-space:pre-wrap}
.si-summary{margin-top:6px;font-size:11px;color:#9a9587;letter-spacing:.02em}
.si-options{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.si-options .opt{border:1px solid #cbbfa9;background:#fffdf8;border-radius:20px;padding:6px 13px;font-size:12.5px;color:#4a463c;transition:all .14s}
.si-options .opt:hover{border-color:var(--jade);color:var(--jade);background:var(--jade-soft)}
.si-options .opt.original{border-color:rgba(168,67,47,.45);color:var(--vermilion)}
.end-card{max-width:760px;margin:0 auto;text-align:center;padding:26px;border:1px dashed #cdbfa6;border-radius:14px;color:#7a7365;background:rgba(255,253,247,.6)}

.composer{border-top:1px solid rgba(120,110,90,.16);padding:10px 2px 14px;background:linear-gradient(0deg,var(--paper) 78%,rgba(243,236,223,0))}
.action-row{display:flex;gap:10px;align-items:stretch}
.action-row textarea{flex:1;resize:none;min-height:44px;max-height:130px;background:#fffdf8;font-size:13px;line-height:1.6}
.btn{border:1px solid transparent;background:#fffdf8;border-radius:9px;padding:7px 13px;font-size:12.5px;transition:background .14s,border-color .14s,transform .1s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--jade);color:#fdfaf2;border-color:var(--jade)}
.btn.primary:hover{background:#264d40}
.btn.ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.13);color:#e8e1d2}
.btn.ghost:hover{background:rgba(255,255,255,.09)}
.main .btn.ghost{border-color:var(--line);background:#fffdf8;color:var(--ink-2)}
.main .btn.ghost:hover{background:#f8f2e6}
.btn.subtle{background:transparent;border-color:var(--line);color:var(--ink-2)}
.btn.subtle:hover{background:#fbf6ea}
.btn.danger-ghost{background:transparent;border-color:#e1c3b8;color:#9c4a34}
.btn.block{width:100%;text-align:left;padding:9px 11px;font-size:12.5px}
.btn.act{align-self:stretch;padding:0 18px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.nav-row{display:grid;grid-template-columns:minmax(104px,1fr) auto minmax(104px,1fr);align-items:center;gap:10px;margin-top:9px}
.nav-row #btnNext{justify-self:end}
.nav-center{display:flex;align-items:center;justify-content:center;gap:9px;min-width:0}
.hint{font-size:11px;color:#a19a8a;letter-spacing:.03em}
.loading-line{position:absolute;left:50%;bottom:104px;transform:translateX(-50%);background:rgba(30,38,31,.92);color:#f4eddf;font-size:11.5px;padding:7px 14px;border-radius:20px;display:flex;align-items:center;gap:5px;box-shadow:0 6px 18px rgba(0,0,0,.18)}
.loading-line span{width:5px;height:5px;border-radius:50%;background:#d9c79f;animation:blink 1s infinite}
.loading-line span:nth-child(2){animation-delay:.15s}
.loading-line span:nth-child(3){animation-delay:.3s}

/* ---------- inspector ---------- */
.inspector{background:rgba(255,253,247,.66);border-left:1px solid rgba(120,110,90,.16);display:flex;flex-direction:column;min-height:0}
.inspector-tabs{display:flex;gap:2px;padding:14px 14px 0;border-bottom:1px solid rgba(120,110,90,.14)}
.itab{border:0;background:transparent;padding:8px 12px;font-size:12.5px;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}
.itab.active{color:var(--ink);border-bottom-color:var(--vermilion);font-weight:600}
.inspector-body{flex:1;overflow-y:auto;padding:14px}
.inspector-body::-webkit-scrollbar{width:8px}
.inspector-body::-webkit-scrollbar-thumb{background:#d3c8b4;border-radius:8px}
.chip-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.chip{border:1px solid var(--line);background:#fffdf8;border-radius:16px;padding:4px 10px;font-size:11.5px;color:var(--ink-2)}
.chip.active{background:var(--jade);color:#fff;border-color:var(--jade)}
.entry{border-bottom:1px solid rgba(120,110,90,.13);padding:10px 2px;cursor:default}
.entry:last-child{border-bottom:0}
.entry-title{font-size:13px;font-weight:600;color:#31372e;display:flex;gap:6px;align-items:baseline}
.entry-sub{font-size:10.5px;color:var(--gold);margin-left:auto;font-weight:400;white-space:nowrap}
.entry-detail{font-size:11.5px;color:#6b6d62;line-height:1.7;margin-top:3px;white-space:pre-wrap;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.entry.open .entry-detail{display:block}
.line-card{border:1px solid var(--line);background:#fffdf8;border-radius:10px;padding:10px 11px;margin-bottom:8px;display:flex;gap:8px;align-items:center}
.line-card.active{border-color:rgba(47,93,78,.5);background:var(--jade-soft)}
.line-card .lc-main{flex:1;min-width:0}
.line-card .lc-name{font-size:12.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.line-card .lc-sub{font-size:10.5px;color:var(--muted);margin-top:2px}
.line-card .lc-actions{display:flex;gap:4px}
.tiny-btn{border:1px solid var(--line);background:#fff;border-radius:7px;font-size:10.5px;padding:3px 7px;color:#5b5b50}
.tiny-btn:hover{background:#f6f0e2}
.metric-card{border:1px solid var(--line);border-radius:12px;background:#fffdf8;padding:13px;margin-bottom:10px}
.metric-num{font-family:"Songti SC","SimSun",serif;font-size:27px;color:var(--jade);line-height:1.1}
.metric-label{font-size:11px;color:var(--muted);letter-spacing:.08em;margin-bottom:2px}
.metric-note{font-size:11.5px;color:#66695f;line-height:1.7;margin-top:6px}
.bar{height:7px;border-radius:6px;background:#eee6d6;overflow:hidden;margin-top:8px}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,#7d9c88,var(--jade));border-radius:6px}

/* ---------- dialogs ---------- */
.dialog{border:0;border-radius:18px;padding:0;background:var(--card);box-shadow:0 30px 80px rgba(30,25,15,.3);max-width:520px;width:calc(100vw - 40px)}
.dialog.wide{max-width:760px}
.dialog::backdrop{background:rgba(20,24,20,.48);backdrop-filter:blur(2px)}
.dialog-inner{padding:20px 22px 18px;display:flex;flex-direction:column;gap:12px;max-height:86vh;overflow-y:auto}
.dialog-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.dialog-head h3{margin:0;font-family:"Songti SC","SimSun",serif;font-size:19px}
.icon-btn{border:0;background:transparent;font-size:22px;color:#8d8a7d;width:30px;height:30px;border-radius:8px}
.icon-btn:hover{background:#f1eadb}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.dialog .field{gap:5px;font-size:11.5px;color:#777467}
.dialog .field input,.dialog .field select{padding:8px 10px;font-size:13px;background:#fffdf8}
.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:2px}
.dropzone{position:relative;border:1.5px dashed #cdbfa6;border-radius:14px;padding:24px;text-align:center;background:#fbf6ea;cursor:pointer;transition:border-color .14s,background .14s}
.dropzone:hover,.dropzone.drag{border-color:var(--jade);background:var(--jade-soft)}
.dropzone input{position:absolute;inset:0;opacity:0;cursor:pointer}
.dz-title{font-size:14px;font-weight:600;color:#4b4a40}
.dz-sub{font-size:11px;color:var(--muted);margin-top:4px}
.dz-file{font-size:11.5px;color:var(--jade);margin-top:9px;word-break:break-all}
.note{font-size:11.5px;color:#8a8577;line-height:1.7;margin:0}
.test-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.test-result{font-size:11.5px;color:#6c6d61;word-break:break-all}
.analysis-top{display:flex;justify-content:space-between;gap:16px;align-items:center}
.analysis-stage{font-size:16px;font-weight:600;font-family:"Songti SC","SimSun",serif}
.analysis-percent{font-family:"Songti SC","SimSun",serif;font-size:30px;color:var(--jade)}
.progress{height:9px;border-radius:8px;background:#eee6d6;overflow:hidden}
.progress-fill{height:100%;width:0;background:linear-gradient(90deg,#86a390,var(--jade));transition:width .35s ease}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.stat{border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:#fffdf8}
.stat b{display:block;font-size:16px;font-family:"Songti SC","SimSun",serif;color:#333a30}
.stat span{font-size:10.5px;color:var(--muted)}
.stage-list{display:flex;flex-direction:column;gap:4px;max-height:180px;overflow-y:auto;border-top:1px dashed var(--line);padding-top:9px}
.stage-row{display:flex;gap:8px;align-items:center;font-size:12px;color:#6d6f63;padding:2px 0}
.stage-row.done{color:var(--jade)}
.stage-row.current{color:var(--ink);font-weight:600}
.stage-dot{width:7px;height:7px;border-radius:50%;background:#d4cab8;flex:none}
.stage-row.done .stage-dot{background:#7ba18a}
.stage-row.current .stage-dot{background:var(--vermilion);box-shadow:0 0 0 3px rgba(168,67,47,.13)}
.analysis-start{display:flex;gap:8px;align-items:flex-end;flex-wrap:wrap;border-top:1px dashed var(--line);padding-top:11px}
.original-tools{display:flex;align-items:center;gap:10px;justify-content:center}
.original-body{border:1px solid var(--line);border-radius:12px;background:#fdfaf2;padding:16px 18px;max-height:52vh;overflow-y:auto;font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;font-size:15.5px;line-height:1.95;white-space:pre-wrap;text-align:justify}

/* ---------- toast / busy ---------- */
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);background:#26312a;color:#f4eddf;font-size:12.5px;padding:10px 16px;border-radius:10px;box-shadow:0 12px 30px rgba(0,0,0,.22);opacity:0;pointer-events:none;transition:opacity .18s,transform .18s;z-index:50;max-width:70vw;text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.err{background:#7f3828}
.toast.ok{background:#2f5d4e}
.busy-mask{position:fixed;inset:0;background:rgba(243,236,223,.55);backdrop-filter:blur(1.5px);display:grid;place-items:center;z-index:40;color:#4c5449;font-size:12.5px}
.spinner{width:30px;height:30px;border-radius:50%;border:2.5px solid #d8cdb9;border-top-color:var(--jade);animation:spin .8s linear infinite;margin:0 auto 9px}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

@media(max-width:1180px){
  .app{grid-template-columns:232px minmax(0,1fr);grid-template-rows:minmax(0,1fr) 300px}
  .sidebar{grid-row:1 / 3}
  .main{grid-row:1;grid-column:2;height:auto;min-height:0}
  .inspector{display:flex;grid-row:2;grid-column:2;border-left:0;border-top:1px solid rgba(120,110,90,.2);min-height:0}
  .inspector-body{padding:10px 14px}
  .reading-shell{padding:0 18px}
}
@media(max-width:1500px){
  .topbar{flex-wrap:wrap}
  .top-actions{flex:1 1 100%;flex-wrap:wrap;justify-content:flex-end}
}
.mobile-only,.mobile-menu-btn,.mobile-inspector-btn,.mobile-backdrop{display:none!important}

@media(max-width:780px){
  html,body{height:100%;overflow:hidden;overscroll-behavior:none}
  body{min-height:100dvh;-webkit-tap-highlight-color:transparent}
  button,.btn,.itab{touch-action:manipulation}
  .app{display:block;height:100dvh;min-height:0;overflow:hidden}

  .sidebar{
    position:fixed;inset:0 auto 0 0;z-index:80;display:flex;width:min(86vw,340px);height:100dvh;
    max-height:none;overflow:hidden;padding:calc(14px + env(safe-area-inset-top)) 14px calc(12px + env(safe-area-inset-bottom));
    border-right:1px solid #141a16;border-bottom:0;box-shadow:18px 0 48px rgba(13,18,14,.32);
    transform:translateX(-104%);transition:transform .24s ease;visibility:hidden;
  }
  .sidebar.mobile-open{transform:none;visibility:visible}
  .brand{padding:0 2px 13px;flex:none}
  .brand-text{min-width:0}
  .brand-text h1{font-size:14px}
  .brand-text p{font-size:10px}
  .drawer-close{display:grid!important;place-items:center;width:40px;height:40px;margin-left:auto;flex:none;background:rgba(255,255,255,.07);color:#efe8d8}
  .sidebar-actions{padding-bottom:12px;flex:none}
  .sidebar-actions .btn{min-height:40px;display:flex;align-items:center;justify-content:center}
  .side-section{min-height:0;padding:12px 0 8px;overflow:hidden}
  .project-list{flex:1;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;padding-bottom:6px}
  .side-foot{display:none}
  .account-card{flex:none;margin-top:0;padding:10px 2px 2px}
  .library-tabs button{min-height:36px;font-size:11px}
  .library-search input{font-size:16px;min-height:38px}
  .library-search button{min-width:46px}

  .main{height:100dvh;min-height:0;overflow:hidden}
  .topbar{
    flex:0 0 auto;flex-wrap:wrap;align-items:center;gap:7px 8px;
    padding:calc(8px + env(safe-area-inset-top)) 12px 8px;
    background:rgba(255,253,247,.96);backdrop-filter:blur(12px);
  }
  .mobile-menu-btn{display:grid!important;place-items:center;width:42px;height:42px;flex:none;background:#fffdf8;border:1px solid var(--line);color:var(--jade);font-size:19px}
  .book-head{flex:1 1 130px;min-width:0;order:2}
  .book-head h2{font-size:18px}
  .subline{font-size:10.5px}
  .billing-widget{order:3;padding:7px 8px;gap:4px;min-height:38px}
  .billing-label{display:none}
  #billingBalance{font-size:11.5px}
  .billing-meter{width:42px}
  .top-actions{
    order:4;flex:1 1 100%;display:flex;flex-wrap:nowrap;justify-content:flex-start;
    gap:6px;max-width:100%;overflow-x:auto;overflow-y:hidden;padding:1px 0 3px;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .top-actions::-webkit-scrollbar{display:none}
  .top-actions .btn{flex:0 0 auto;min-height:38px;padding:7px 11px;font-size:11.5px}
  .mobile-inspector-btn{display:inline-flex!important;align-items:center}
  .banner{margin:7px 12px 0;font-size:11.5px}

  .reading-shell{flex:1;min-height:0;max-width:none;padding:0 12px}
  .reading-toolbar{flex-wrap:nowrap;gap:8px;padding:8px 0}
  .crumbs{max-width:calc(100% - 108px);font-size:10.5px}
  .mode-badge{font-size:9.5px;padding:2px 7px}
  .story{flex:1;min-height:0;max-height:none;padding:14px 1px 18px;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
  .welcome{margin:12px auto 0;padding:24px 17px;border-radius:16px}
  .welcome h3{font-size:22px}
  .welcome p{font-size:13px;line-height:1.8}
  .story-item{margin-bottom:15px;padding:0 1px}
  .si-text{font-size:17px;line-height:1.9;text-align:left}
  .story-item.event .si-text,.story-item.action .si-text{padding:10px 12px}
  .end-card{padding:20px 16px}

  .composer{flex:none;padding:8px 0 calc(9px + env(safe-area-inset-bottom));background:var(--paper)}
  .cost-hint{font-size:10px;margin-bottom:5px}
  .action-row{display:grid;grid-template-columns:1fr;gap:7px}
  .action-row textarea{width:100%;min-height:66px;max-height:130px;padding:10px 11px;font-size:16px}
  .btn.act{width:100%;min-height:44px;padding:10px 14px}
  .nav-row{grid-template-columns:1fr 1fr;gap:7px;margin-top:7px}
  .nav-center{grid-column:1 / -1;grid-row:1;justify-content:center;gap:7px}
  .nav-center .hint{display:none}
  .nav-center .btn{min-height:36px;padding:6px 11px}
  .nav-row #btnPrev{grid-column:1;grid-row:2;justify-self:stretch;min-height:42px;padding:8px 10px}
  .nav-row #btnNext{grid-column:2;grid-row:2;justify-self:stretch;min-height:42px;padding:8px 10px}
  .loading-line{bottom:calc(124px + env(safe-area-inset-bottom))}

  .inspector{
    position:fixed;inset:0 0 0 auto;z-index:80;display:flex;width:min(92vw,390px);height:100dvh;
    max-height:none;background:#fffdf7;border-left:1px solid rgba(120,110,90,.2);border-top:0;
    box-shadow:-18px 0 48px rgba(13,18,14,.24);transform:translateX(104%);transition:transform .24s ease;visibility:hidden;
  }
  .inspector.mobile-open{transform:none;visibility:visible}
  .inspector-drawer-close{position:absolute;z-index:2;top:calc(8px + env(safe-area-inset-top));right:8px;background:#f3ede1;color:var(--ink-2)}
  .inspector-tabs{flex:0 0 auto;overflow-x:auto;padding:calc(12px + env(safe-area-inset-top)) 48px 0 10px;scrollbar-width:none}
  .inspector-tabs::-webkit-scrollbar{display:none}
  .itab{flex:0 0 auto;padding:8px 9px;font-size:12px}
  .inspector-body{padding:12px;overscroll-behavior:contain}
  .entry-detail{font-size:12px}
  .chip{min-height:34px}

  .mobile-backdrop{display:block!important;position:fixed;inset:0;z-index:70;background:rgba(20,25,21,.46);opacity:0;pointer-events:none;transition:opacity .2s ease;backdrop-filter:blur(2px)}
  .mobile-backdrop.show{opacity:1;pointer-events:auto}
  body.mobile-drawer-open{overflow:hidden}

  .dialog,.dialog.wide,.cost-dialog{
    width:calc(100vw - 16px);max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px);
    border-radius:15px;margin:auto;
  }
  .dialog-inner{padding:16px 16px calc(14px + env(safe-area-inset-bottom));max-height:calc(100dvh - 24px);gap:10px}
  .dialog-head h3{font-size:18px}
  .form-grid{grid-template-columns:1fr}
  .dialog .field input,.dialog .field select{font-size:16px;min-height:44px}
  .dropzone{padding:20px 14px}
  .dialog-actions{flex-wrap:wrap;gap:7px}
  .dialog-actions .btn{flex:1 1 42%;min-height:42px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .analysis-start{display:grid;grid-template-columns:1fr 1fr}
  .analysis-start .field{grid-column:1 / -1}
  .analysis-start .btn{min-height:42px}
  .original-body{max-height:54dvh;padding:12px;font-size:16px;line-height:1.85;text-align:left}
  .cost-summary{grid-template-columns:1fr 1fr}
  .recharge-box{grid-template-columns:1fr}
  .billing-layout{grid-template-columns:1fr;gap:12px}
  .billing-side{border-left:0;border-top:1px solid rgba(120,110,90,.14);padding-left:0;padding-top:12px}
  .billing-balance-row{align-items:flex-start;flex-direction:column}
  .billing-meter.large{width:100%;max-width:240px}
  .qr-box{min-height:200px;max-width:280px;margin:0 auto;width:100%}

  .plot-chat{inset:calc(8px + env(safe-area-inset-top)) 8px calc(8px + env(safe-area-inset-bottom));width:auto;height:auto;right:8px;bottom:8px;border-radius:14px}
  .chat-input-row textarea{font-size:16px;min-height:54px}
  .chat-input-row .btn{min-height:44px}
  .toast{bottom:calc(18px + env(safe-area-inset-bottom));max-width:calc(100vw - 24px);font-size:12px}

  .tree-dialog{width:100vw;max-width:100vw;height:100dvh;border-radius:0}
  .tree-shell{height:100dvh}
  .tree-head{padding:calc(9px + env(safe-area-inset-top)) 10px 9px;gap:8px;flex-wrap:nowrap;align-items:flex-start}
  .tree-head h3{font-size:17px}
  .tree-sub{display:none}
  .tree-controls{flex:0 0 auto;max-width:58vw;overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px;scrollbar-width:none}
  .tree-controls::-webkit-scrollbar{display:none}
  .tree-legend{display:none}
  .tree-main{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) minmax(205px,38dvh)}
  .tree-detail{border-left:0;border-top:1px solid rgba(120,110,90,.18);padding:12px}
  .wt-node{width:220px;height:112px}
}
/* choice bar */
.choice-bar{display:flex;flex-wrap:wrap;gap:7px;align-items:center;padding:8px 2px 10px}
.choice-title{font-size:11.5px;color:#8d6a3c;letter-spacing:.04em;margin-right:3px}
.opt{border:1px solid #cbbfa9;background:#fffdf8;border-radius:20px;padding:6px 13px;font-size:12.5px;color:#4a463c;transition:all .14s}
.opt:hover{border-color:var(--jade);color:var(--jade);background:var(--jade-soft)}
.opt.original{border-color:rgba(168,67,47,.45);color:var(--vermilion)}
.test-result{white-space:pre-wrap}
/* settings / progress additions */
.preset-row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;background:#fbf6ea;border:1px solid #eadcbe;border-radius:10px;padding:8px 10px}
.advanced{border-top:1px dashed var(--line);padding-top:8px}
.advanced summary{cursor:pointer;font-size:11.5px;color:#8a8577;padding:3px 0}
.advanced[open] summary{color:var(--jade);margin-bottom:8px}
.inline-alert{white-space:pre-wrap;font-size:12px;line-height:1.7;border-radius:10px;padding:10px 12px;border:1px solid #e3cfae;background:#fbf4e4;color:#6d5428}
.inline-alert.err{border-color:#e1c3b8;background:#fbece7;color:#8d3f2a}
.inline-alert.ok{border-color:#bdd4c6;background:#eaf3ed;color:#2f5d4e}
.archive-search{display:flex;gap:6px;align-items:center;margin:8px 0}
.archive-search input{flex:1;min-width:0;padding:7px 9px;border:1px solid var(--line);border-radius:9px;background:#fffdf8;font-size:11.5px;color:#3f453b}
.archive-search input:focus{outline:none;border-color:#9bbfa8;box-shadow:0 0 0 2px rgba(47,93,78,.08)}
.archive-search-head{font-size:10.5px;color:var(--muted);padding:2px 2px 6px}
.archive-cat-badge{float:right;font-size:9px;color:#6d7e71;background:#eef4ef;border:1px solid #cfe0d4;border-radius:8px;padding:0 5px;margin-left:5px}
.archive-profile-badge{float:right;font-size:9px;color:#8d3f2a;background:#fbece7;border:1px solid #e1c3b8;border-radius:8px;padding:0 5px;margin-left:5px}
.entry.profile-entry{border-color:#a9c4b1;background:#f4f8f4;box-shadow:0 4px 14px rgba(47,93,78,.07)}
.entry.profile-entry .entry-title{color:#2f5d4e}
.upload-progress{margin-top:2px}
.upload-text{font-size:11.5px;color:#777467;margin-top:6px;display:flex;justify-content:space-between;gap:10px}
.dialog > .toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,0);z-index:99}

/* plot discussion mini window */
.plot-chat{position:fixed;right:22px;bottom:22px;width:min(390px,calc(100vw - 28px));height:min(520px,calc(100vh - 100px));background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:0 22px 60px rgba(30,25,15,.25);display:flex;flex-direction:column;z-index:45;overflow:hidden}
.plot-chat.hidden{display:none}
.pc-head{background:linear-gradient(135deg,#263129,#1d2620);color:#f4eddf;padding:9px 12px;display:flex;justify-content:space-between;align-items:center;gap:8px}
.pc-head b{font-size:13px;display:block;letter-spacing:.03em}
.pc-head span{font-size:10px;color:#aab8ad}
.pc-actions{display:flex;gap:2px}
.pc-actions .icon-btn{color:#e8e1d2;width:26px;height:26px;font-size:15px}
.pc-actions .icon-btn:hover{background:rgba(255,255,255,.1)}
.chat-messages{flex:1;overflow-y:auto;padding:11px;display:flex;flex-direction:column;gap:8px;background:#fbf7ee}
.chat-empty{font-size:11.5px;color:#918b7d;line-height:1.8;padding:8px}
.chat-msg{max-width:88%;padding:8px 11px;border-radius:12px;font-size:12.5px;line-height:1.75;white-space:pre-wrap;word-break:break-word}
.chat-msg.user{align-self:flex-end;background:var(--jade);color:#fdfaf2;border-bottom-right-radius:4px}
.chat-msg.assistant{align-self:flex-start;background:#fffdf8;border:1px solid var(--line);color:#3d4238;border-bottom-left-radius:4px}
.chat-msg.thinking{align-self:flex-start;background:#f1eadb;color:#8a8577;font-style:italic}
.chat-input-row{display:flex;gap:7px;padding:9px;border-top:1px solid var(--line);background:#fffdf8}
.chat-input-row textarea{flex:1;resize:none;min-height:40px;max-height:90px;font-size:12.5px}
.chat-input-row .btn{align-self:stretch;padding:0 14px}
@media(max-width:780px){.plot-chat{left:10px;right:10px;bottom:10px;width:auto;height:60vh}}
.plot-chat > .inline-alert{margin:0 9px 6px}

.quick-actions{display:flex;gap:6px;flex-wrap:wrap;margin:0 2px 6px}.quick-chip{border:1px solid #d8cdb9;background:#fffdf8;border-radius:14px;padding:3px 9px;font-size:11px;color:#777467}.quick-chip:hover{border-color:var(--jade);color:var(--jade);background:var(--jade-soft)}

/* director mode + original compare */
.mode-badge{font-size:11px;color:var(--jade);background:var(--jade-soft);border:1px solid #c9d8cf;padding:3px 10px;border-radius:14px;letter-spacing:.04em;white-space:nowrap}
.story-item.clickable{cursor:pointer}
.story-item.clickable:hover .si-text{background:rgba(47,93,78,.035)}
.si-compare-hint{margin-top:6px;font-size:10.5px;color:#8d6a3c;text-align:right;letter-spacing:.02em}
.compare-text{font-family:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;font-size:15px;line-height:1.95;white-space:pre-wrap;text-align:justify;background:#fdfaf2;border:1px solid var(--line);border-radius:10px;padding:12px 14px;max-height:48vh;overflow-y:auto}
.inspector-tabs{flex-wrap:wrap}
.story-item.newworld .si-tag{color:var(--vermilion);border-color:rgba(168,67,47,.45);background:var(--vermilion-soft)}

/* world tree */
.tree-line{border-left:2px solid rgba(47,93,78,.28);padding-left:10px;margin:6px 0 8px 2px;position:relative}
.tree-line.reality{border-left-color:#b43b2d}
.tree-line.reality .tree-line-name{color:#9e3024}
.tree-line.reality .tree-current{color:#a83226;background:#fbece7}
.tree-line-head{display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding:2px 0 4px}
.tree-line-name{font-size:12px;font-weight:600;color:#31372e}
.tree-current{font-size:9.5px;color:var(--jade);background:var(--jade-soft);border-radius:9px;padding:1px 6px}
.tree-node{position:relative;margin:6px 0 6px 8px;padding:8px 9px;border:1px solid var(--line);border-radius:9px;background:#fffdf8}
.tree-node::before{content:'';position:absolute;left:-14px;top:15px;width:8px;height:8px;border-radius:50%;background:var(--jade);box-shadow:0 0 0 3px rgba(47,93,78,.12)}
.tree-node.action{border-color:#e1c3b8}
.tree-node.action::before{background:var(--vermilion);box-shadow:0 0 0 3px rgba(168,67,47,.12)}
.tree-node.original::before{background:var(--gold);box-shadow:0 0 0 3px rgba(176,138,74,.13)}
.tree-node.branch::before{background:#7d9c88}
.tn-head{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.tree-label{font-size:9.5px;letter-spacing:.06em;color:#8d6a3c;border:1px solid #e3cfae;background:#fbf4e4;border-radius:10px;padding:1px 6px}
.tree-node.action .tree-label{color:var(--vermilion);border-color:#e1c3b8;background:var(--vermilion-soft)}
.tn-title{font-size:11.5px;font-weight:600;color:#3d4238;word-break:break-word}
.tn-meta{font-size:9.5px;color:#9a9587;margin-top:2px}
.tree-diff{font-size:10.5px;line-height:1.65;color:#6b685b;background:#f8f2e6;border-radius:7px;padding:5px 7px;margin-top:5px;word-break:break-word}
.tree-diff.empty{color:#a19a8a;background:transparent;padding-left:0}
.tree-node-actions{display:flex;gap:5px;flex-wrap:wrap;margin-top:6px}
.tree-children{margin-left:16px;border-left:1px dashed rgba(120,110,90,.28);padding-left:8px}
/* full-screen parallel world tree */
.tree-dialog{width:96vw;max-width:1680px;height:92vh;max-height:none;padding:0;border:0;border-radius:18px;background:#f8f4ea;box-shadow:0 30px 100px rgba(20,25,20,.35);overflow:hidden}
.tree-dialog::backdrop{background:rgba(18,22,18,.62);backdrop-filter:blur(3px)}
.tree-shell{height:100%;display:flex;flex-direction:column;min-height:0}
.tree-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 18px;background:linear-gradient(135deg,#1d2620,#2b3a30);color:#f5efe1;flex-wrap:wrap}
.tree-head h3{margin:0;font-family:"Songti SC","SimSun",serif;font-size:20px;letter-spacing:.03em}
.tree-sub{font-size:11px;color:#adbaae;margin-top:3px}
.tree-controls{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.tree-controls .btn{border-color:rgba(255,255,255,.2);color:#f5efe1;background:rgba(255,255,255,.06);padding:5px 10px}
.tree-controls .btn:hover{background:rgba(255,255,255,.13)}
.tree-controls .icon-btn{color:#f5efe1;font-size:22px}
.tree-legend{font-size:10.5px;color:#c1ccbf;display:flex;align-items:center;gap:4px;margin-right:4px}
.tree-legend i{width:10px;height:3px;border-radius:2px;display:inline-block}
.lg-main{background:#7fb294}.lg-branch{background:#d07a58}.lg-reality{background:#b43b2d}.lg-current{background:#8e2118}
.tree-main{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 330px}
.tree-viewport{position:relative;overflow:auto;cursor:grab;background:#f8f4ea;background-image:radial-gradient(circle at 20% 10%,rgba(176,138,74,.07),transparent 35%),radial-gradient(circle at 85% 90%,rgba(47,93,78,.06),transparent 40%),linear-gradient(rgba(120,110,90,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,110,90,.06) 1px,transparent 1px);background-size:auto,auto,28px 28px,28px 28px}
.tree-viewport.dragging{cursor:grabbing;user-select:none}
.tree-spacer{position:relative;min-width:100%;min-height:100%}
.tree-canvas{position:absolute;left:0;top:0;transform-origin:0 0}
.tree-svg{position:absolute;left:0;top:0;overflow:visible}
.tree-nodes{position:absolute;left:0;top:0}
.wt-lane-label{position:absolute;transform:translateX(-50%);font-size:10.5px;color:#6d6a5e;background:rgba(255,253,247,.92);border:1px solid #ded4c2;border-radius:12px;padding:2px 8px;white-space:nowrap;box-shadow:0 2px 8px rgba(50,44,32,.06)}
.wt-lane-label.main{color:#2f5d4e;border-color:#b9d2c4;background:#eef5f0;font-weight:600}
.wt-lane-label.reality{color:#a83226;border-color:#e0b1a7;background:#fbedE9;font-weight:700}
.wt-node{position:absolute;width:250px;height:124px;background:#fffdf8;border:1px solid #ded4c2;border-radius:12px;box-shadow:0 6px 18px rgba(50,44,32,.10);padding:9px 10px;cursor:pointer;overflow:hidden;transition:box-shadow .14s,border-color .14s,transform .14s;content-visibility:auto;contain-intrinsic-size:250px 124px}
.wt-node:hover{box-shadow:0 12px 30px rgba(50,44,32,.16);transform:translateY(-2px)}
.wt-node.chapter{background:#f2f7f2;border-color:#a9c4b1;box-shadow:0 8px 22px rgba(47,93,78,.14)}
.wt-node.chapter .wt-tag{color:#2f5d4e;border-color:#b9d2c4;background:#e6f1ea}
.wt-node.current{border-color:#b43b2d;box-shadow:0 0 0 3px rgba(180,59,45,.18),0 12px 28px rgba(120,38,28,.16)}
.wt-node.current .wt-tag{color:#9e3024;border-color:#e1b4a9;background:#f9e9e4}
.wt-node.reality{border-color:#cf8b7f;background:#fff8f5;box-shadow:0 6px 18px rgba(180,59,45,.11)}
.wt-node.reality .wt-tag{color:#9e3024;border-color:#e1b4a9;background:#f9e9e4}
.wt-node.reality.current{border-color:#a92e22;box-shadow:0 0 0 3px rgba(180,59,45,.21),0 12px 28px rgba(120,38,28,.2)}
.wt-node.action{border-color:#e1c3b8}
.wt-node.action .wt-tag{color:var(--vermilion);border-color:#e1c3b8;background:var(--vermilion-soft)}
.wt-node.original .wt-tag{color:#8d6a3c;border-color:#e3cfae;background:#fbf4e4}
.wt-node.branch .wt-tag{color:var(--jade);border-color:#bdd4c6;background:var(--jade-soft)}
.wt-node.selected{border-color:var(--vermilion);box-shadow:0 0 0 3px rgba(168,67,47,.14),0 12px 30px rgba(50,44,32,.16)}
.wt-node-head{display:flex;align-items:center;gap:5px;flex-wrap:wrap}
.wt-tag{font-size:9px;letter-spacing:.06em;border:1px solid var(--line);border-radius:9px;padding:1px 6px;color:#777467;background:#f8f2e6;white-space:nowrap}
.wt-meta{font-size:9px;color:#9a9587;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.wt-title{font-size:11.5px;font-weight:600;color:#3d4238;line-height:1.45;margin-top:5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.wt-diff{font-size:10px;line-height:1.5;color:#6b685b;background:#f8f2e6;border-radius:6px;padding:4px 6px;margin-top:5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.wt-diff.empty{color:#a19a8a;background:transparent;padding-left:0}
.wt-node-foot{display:flex;justify-content:space-between;align-items:center;font-size:9px;color:#9a9587;margin-top:5px}
.wt-pre{color:var(--jade);background:var(--jade-soft);border-radius:8px;padding:1px 5px}
.tree-empty{position:absolute;inset:0;display:grid;place-items:center;color:#9a9587;font-size:12px;pointer-events:none}
.tree-detail{border-left:1px solid rgba(120,110,90,.18);background:#fffdf8;overflow-y:auto;padding:15px 15px 18px}
.tree-detail h3{margin:2px 0 3px;font-family:"Songti SC","SimSun",serif;font-size:18px;color:#31372e}
.td-meta{font-size:10.5px;color:#9a9587;line-height:1.6}
.td-section{margin-top:11px}
.td-label{font-size:10px;letter-spacing:.1em;color:var(--gold);margin-bottom:3px}
.td-text{font-size:12px;line-height:1.75;color:#4f544a;white-space:pre-wrap;word-break:break-word}
.td-diff{font-size:12px;line-height:1.75;background:#f8f2e6;border:1px solid #eadcbe;border-radius:9px;padding:8px 10px;color:#5c574a;white-space:pre-wrap}
.td-actions{display:flex;flex-direction:column;gap:6px;margin-top:14px}
.td-actions .btn{width:100%}
.tree-dialog .tree-detail .empty-mini{padding:30px 10px;text-align:center}
@media(max-width:900px){.tree-dialog{width:98vw;height:94vh}.tree-main{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) 250px}.tree-detail{border-left:0;border-top:1px solid rgba(120,110,90,.18)}.tree-head{padding:10px 12px}.tree-sub{max-width:70vw}.wt-node{width:250px;height:124px}}
/* 天机点 billing */
.billing-widget{display:flex;align-items:center;gap:6px;padding:4px 9px;border:1px solid var(--line);border-radius:12px;background:#fffdf8;cursor:pointer;flex:none;transition:border-color .14s}
.billing-widget:hover{border-color:var(--jade)}
.billing-label{font-size:9.5px;letter-spacing:.08em;color:#8d8576}
#billingBalance{font-size:12px;color:var(--jade);font-family:"Songti SC","SimSun",serif}
.billing-meter{width:68px;height:5px;border-radius:4px;background:#eee6d6;overflow:hidden;flex:none}
.billing-meter i{display:block;height:100%;width:100%;border-radius:4px;background:linear-gradient(90deg,#9bbfa8,#2f5d4e);transition:width .35s ease}
.billing-meter.mid i{background:linear-gradient(90deg,#e0bd76,#b08a4a)}
.billing-meter.low i{background:linear-gradient(90deg,#e28e72,#a8432f)}
.cost-hint{font-size:10.5px;color:#8d6a3c;background:#fbf4e4;border:1px solid #eadcbe;border-radius:8px;padding:3px 8px;margin:0 2px 6px;display:inline-block}
.cost-hint.low{color:#9c3f2a;background:var(--vermilion-soft);border-color:#e1c3b8}
.billing-balance-row{display:flex;justify-content:space-between;align-items:center;gap:14px;border:1px solid var(--line);border-radius:12px;padding:11px 13px;background:#fbf7ee}
.billing-big{font-family:"Songti SC","SimSun",serif;font-size:28px;color:var(--jade);line-height:1.2}
.billing-meter.large{width:150px;height:9px}
.billing-tx{max-height:190px;overflow-y:auto;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line);padding:4px 0;margin-bottom:10px}
.billing-tx-item{display:flex;justify-content:space-between;gap:10px;font-size:11px;padding:4px 2px;border-bottom:1px solid rgba(120,110,90,.08)}
.billing-tx-item:last-child{border-bottom:0}
.billing-tx-item .bt-main{color:#5b5e52;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.billing-tx-item .bt-points{white-space:nowrap;font-weight:600}
.billing-tx-item .bt-points.plus{color:var(--jade)}
.billing-tx-item .bt-points.minus{color:var(--vermilion)}
.cost-dialog{max-width:540px}
.cost-dialog .dialog-head .muted{font-size:11px;margin-top:4px}
.cost-operation{border-left:3px solid var(--jade);background:#f4f8f4;border-radius:8px;padding:10px 12px;color:#3e4f45;font-size:12.5px;line-height:1.65}
.cost-summary{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.cost-summary>div{border:1px solid var(--line);border-radius:10px;padding:9px 11px;background:#fffdf8}
.cost-summary span{display:block;font-size:10.5px;color:var(--muted);margin-bottom:3px}
.cost-summary b{font-family:"Songti SC","SimSun",serif;font-size:19px;color:var(--jade)}
.cost-mute{display:flex;align-items:center;gap:7px;font-size:11.5px;color:#777467;line-height:1.5;cursor:pointer}
.cost-mute input{accent-color:var(--jade);width:15px;height:15px;flex:none}
.cost-dialog .note{margin:0}
.recharge-row{display:flex;gap:7px;margin:8px 0}
.recharge-row input{flex:1}

/* account + per-account library */
.library-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;background:#efe8db;border-radius:9px;padding:3px;margin:0 0 7px}
.library-tabs button{border:0;background:transparent;border-radius:7px;padding:6px 2px;color:#858477;font-size:10px;cursor:pointer;white-space:nowrap}
.library-tabs button span{font-size:9px;color:#aaa596;margin-left:2px}
.library-tabs button.active{background:#fffdf8;color:var(--jade);box-shadow:0 2px 8px rgba(66,57,40,.08);font-weight:600}
.library-tabs button.active span{color:var(--jade)}
.library-search{display:flex;gap:4px;margin-bottom:8px}
.library-search input{flex:1;min-width:0;border:1px solid var(--line);border-radius:8px;background:#fffdf8;padding:6px 8px;font-size:10.5px;color:#41473f;outline:none}
.library-search input:focus{border-color:#9bbfa8}
.library-search button{border:1px solid var(--line);background:#fffdf8;border-radius:8px;padding:0 8px;font-size:10px;color:#74796e;cursor:pointer}
.project-item{position:relative}
.project-item .pi-side{display:flex;align-items:center;gap:4px}
.favorite-star{border:0;background:transparent;color:#b9b1a2;font-size:13px;line-height:1;padding:1px 3px;cursor:pointer}
.favorite-star.on{color:#b9812f}
.catalog-badge{font-size:9px;color:#846337;background:#fbf2df;border:1px solid #ead6ae;border-radius:7px;padding:0 4px;white-space:nowrap}
.account-card{position:relative;display:flex;align-items:center;gap:8px;border-top:1px solid rgba(120,110,90,.15);padding:11px 2px 8px;margin-top:7px}
.account-avatar{width:30px;height:30px;border-radius:10px;background:var(--jade);color:#fffdf7;display:grid;place-items:center;font:16px "Songti SC",serif;flex:none}
.account-copy{min-width:0;flex:1}.account-copy b{display:block;font-size:11.5px;color:#3c443b;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.account-copy span{display:block;font-size:9px;color:#9a9a8e;margin-top:1px}
.account-menu{position:absolute;right:0;bottom:44px;background:#fffdf8;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 32px rgba(35,30,20,.16);padding:4px;z-index:20;min-width:120px}
.account-menu button{display:block;width:100%;border:0;background:none;text-align:left;padding:7px 9px;border-radius:7px;font-size:11px;color:#5d655b;cursor:pointer}.account-menu button:hover{background:#f3ede1;color:var(--jade)}

/* new billing dialog */
.billing-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:18px;margin-top:12px}
.billing-main{min-width:0}.billing-side{min-width:0;border-left:1px solid rgba(120,110,90,.14);padding-left:18px}
.recharge-box{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:15px;border:1px solid var(--line);border-radius:13px;padding:13px;background:#fbf7ee}
.recharge-copy{display:flex;flex-direction:column;justify-content:center}.recharge-copy .field{margin-bottom:9px}
.recharge-presets{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:10px}.recharge-presets button{border:1px solid #d7cdbc;background:#fffdf8;border-radius:8px;padding:4px 8px;font-size:10.5px;color:#777568;cursor:pointer}.recharge-presets button:hover{border-color:var(--jade);color:var(--jade)}
.qr-box{min-height:168px;border:1px dashed #cec3b0;border-radius:10px;display:grid;place-items:center;background:#fffdfa;color:#a09b8e;font-size:10px;text-align:center;overflow:hidden}.qr-box img{width:100%;height:100%;max-height:210px;object-fit:contain;background:#fff}.qr-box.has-code{border-style:solid}
.pending-order{margin-top:10px;border:1px solid #d8c9ab;background:#fbf4e6;border-radius:10px;padding:10px 12px;font-size:11px;line-height:1.7;color:#665b46}.pending-order b{color:#8b6733;font-family:"Songti SC",serif;font-size:13px}
.billing-tx.tall{max-height:340px}
@media(max-width:760px){.billing-layout{grid-template-columns:1fr}.billing-side{border-left:0;border-top:1px solid rgba(120,110,90,.14);padding-left:0;padding-top:12px}.recharge-box{grid-template-columns:1fr}.qr-box{min-height:190px}}

/* recharge flow */
.recharge-box.single{grid-template-columns:1fr}
.recharge-flow{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:12px 0 0;padding:11px 12px;border:1px solid #e3d7c4;border-radius:11px;background:#fbf7ee;color:#69675c;font-size:11px;line-height:1.6}
.recharge-flow b{width:100%;font-size:11.5px;color:#4d554b;margin-bottom:2px}
.recharge-flow span{display:inline-flex;align-items:center;gap:4px}
.recharge-flow i{width:17px;height:17px;border-radius:50%;display:inline-grid;place-items:center;background:#e7eee8;color:var(--jade);font-style:normal;font-size:9.5px;font-weight:700}
.recharge-flow em{font-style:normal;color:#b4aa98}
.order-side{display:flex;align-items:flex-end;flex-direction:column;gap:3px;flex:none}
.order-pay-link{display:inline-block;color:var(--jade);font-size:10.5px;text-decoration:none;border-bottom:1px solid #a9c2b2;white-space:nowrap}
.pending-order a{display:inline-block;margin-top:3px}
.billing-tx-item .bt-main{min-width:0}
@media(max-width:780px){
  .recharge-flow{align-items:flex-start;gap:5px 8px;font-size:10.5px;padding:10px}
  .recharge-flow em{display:none}
  .recharge-flow span{flex:1 1 44%}
  .order-side{gap:5px}
}

/* mobile reader focus, floating chat, and full-screen tree */
@media(max-width:780px){
  body.reader-focus .topbar,
  body.reader-focus .reading-toolbar,
  body.reader-focus .banner{display:none!important}
  body.reader-focus .reading-shell{padding-top:0}
  body.reader-focus .story{padding-top:10px}

  .story{--reader-scale:1;touch-action:pan-y;overscroll-behavior:contain;-webkit-user-select:text;user-select:text}
  .story .si-text{font-size:calc(17px * var(--reader-scale,1))}

  .nav-row{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:6px;margin-top:7px}
  .nav-center{grid-column:2;grid-row:1;justify-self:center;white-space:nowrap}
  .nav-center .hint{display:none}
  .nav-center .btn{min-height:42px;padding:7px 9px;font-size:11.5px}
  .nav-row #btnPrev{grid-column:1;grid-row:1;justify-self:stretch;min-height:42px;padding:7px 8px;font-size:11.5px}
  .nav-row #btnNext{grid-column:3;grid-row:1;justify-self:stretch;min-height:42px;padding:7px 8px;font-size:11.5px}

  .plot-chat{
    top:auto!important;left:50%;right:auto;bottom:calc(214px + env(safe-area-inset-bottom));
    width:min(94vw,380px);height:min(38dvh,320px);
    transform:translateX(-50%);border-radius:15px;
    box-shadow:0 18px 50px rgba(25,31,26,.28);
  }
  .chat-input-row textarea{font-size:16px;min-height:52px}

  .tree-dialog{
    position:fixed;inset:0;margin:0;width:100vw;max-width:100vw;
    height:100dvh;max-height:100dvh;border-radius:0;
  }
  .tree-shell{height:100dvh}
  .tree-head{align-items:flex-start;padding:calc(8px + env(safe-area-inset-top)) 9px 8px}
  .tree-head h3{font-size:17px;line-height:1.35}
  .tree-sub,.tree-legend{display:none!important}
  .tree-controls{max-width:62vw;overflow-x:auto;flex-wrap:nowrap;scrollbar-width:none;padding-bottom:2px}
  .tree-controls::-webkit-scrollbar{display:none}
  .tree-main{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) minmax(190px,35dvh)}
  .tree-viewport{touch-action:none;overscroll-behavior:contain}
  .tree-detail{border-left:0;border-top:1px solid rgba(120,110,90,.18);padding:12px calc(12px + env(safe-area-inset-right)) calc(12px + env(safe-area-inset-bottom)) calc(12px + env(safe-area-inset-left))}
}