/* 迅更 theme (2026-10-20): ink green on paper, a vermilion seal, and covers like thread-bound books.
   Loaded last; overrides earlier chrome without touching behaviour. */
:root{
  --xg-ink:#1f3d30;--xg-ink-2:#2f5743;--xg-ink-soft:#e7eee6;
  --xg-paper:#fcfbf6;--xg-rail:#f4f3ec;--xg-line:#e3e3d6;--xg-line-2:#ecebe1;
  --xg-text:#24302a;--xg-muted:#6f786b;--xg-faint:#9aa192;--xg-seal:#a33b2b;
  --xg-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",SimSun,serif;
  --xg-sans:"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
body{font-family:var(--xg-sans);color:var(--xg-text);background:var(--xg-paper)}
.ui-icon{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
:focus-visible{outline:2px solid var(--xg-ink-2);outline-offset:2px}

/* ---------- shell ---------- */
#shellRoot{background:var(--xg-paper)}
.xg-page{min-height:100dvh;display:flex;flex-direction:column;max-width:1240px;margin:0 auto;padding:0 40px;box-sizing:border-box}
.xg-header{display:flex;align-items:center;justify-content:space-between;height:84px}
.xg-brand{display:flex;align-items:center;gap:12px;border:0;background:none;padding:0;cursor:pointer;color:var(--xg-ink)}
.xg-brand b{font:600 18px/1 var(--xg-serif);letter-spacing:.08em}
.xg-seal{display:grid;place-items:center;width:30px;height:30px;background:var(--xg-seal);color:#fbf3ea;font:600 17px/1 var(--xg-serif);border-radius:3px;box-shadow:inset 0 0 0 2px #a33b2b,inset 0 0 0 3px #f3dccf66}
.xg-nav{display:flex;gap:30px}
.xg-nav button{border:0;background:none;padding:6px 0;font-size:14px;color:var(--xg-muted);cursor:pointer}
.xg-nav button[aria-current=page]{color:var(--xg-ink);box-shadow:inset 0 -1.5px var(--xg-ink)}
.xg-nav button:hover{color:var(--xg-ink)}
.xg-btn{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;border:1px solid #cfd6c7;border-radius:8px;background:#fff;color:var(--xg-ink);font:500 14px/1 var(--xg-sans);cursor:pointer;white-space:nowrap}
.xg-btn:hover{border-color:var(--xg-ink-2)}
.xg-btn.primary{background:var(--xg-ink);border-color:var(--xg-ink);color:#f8f6ec}
.xg-btn.primary:hover{background:#163126}

.xg-hero{flex:1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);align-items:center;gap:40px;padding-bottom:60px}
.xg-hero h1{font:500 clamp(44px,5.4vw,70px)/1.28 var(--xg-serif);color:var(--xg-ink);letter-spacing:.04em;margin:0}
.xg-hero p{font-size:17px;line-height:1.9;color:var(--xg-muted);margin:28px 0 40px;max-width:26em}
.xg-cta{display:flex;gap:12px;flex-wrap:wrap}
.xg-hero-art img{width:100%;height:auto;display:block;max-height:72vh;object-fit:contain}
.xg-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--xg-line);padding:22px 0 26px;color:var(--xg-faint);font-size:12px}
.xg-footer a{color:var(--xg-muted);text-decoration:none}
.xg-footer a:hover{color:var(--xg-ink);text-decoration:underline}

.xg-onb{flex:1;padding:60px 0 80px}
.xg-onb h2{font:500 36px/1.4 var(--xg-serif);color:var(--xg-ink);margin:0 0 36px;letter-spacing:.04em}
.xg-onb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.xg-entry{display:grid;gap:10px;justify-items:start;text-align:left;padding:30px 28px;border:1px solid var(--xg-line);border-radius:12px;background:#fff;cursor:pointer;color:var(--xg-text)}
.xg-entry:hover{border-color:var(--xg-ink-2)}
.xg-entry.featured{background:var(--xg-ink);border-color:var(--xg-ink);color:#f5f3e8}
.xg-entry-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--xg-ink-soft);color:var(--xg-ink);margin-bottom:10px}
.xg-entry.featured .xg-entry-icon{background:#ffffff1f;color:#f5f3e8}
.xg-entry .ui-icon{width:19px;height:19px}
.xg-entry b{font:500 20px/1.4 var(--xg-serif);letter-spacing:.03em}
.xg-entry span:last-child{font-size:13px;color:var(--xg-muted)}
.xg-entry.featured span:last-child{color:#cfd9cc}

.xg-shelf{flex:1;padding:36px 0 80px}
.xg-shelf-head{display:flex;align-items:baseline;gap:14px;margin-bottom:40px}
.xg-shelf-head h2{font:500 32px/1.3 var(--xg-serif);color:var(--xg-ink);margin:0;letter-spacing:.05em}
.xg-count{color:var(--xg-faint);font-size:14px}
.xg-shelf-head .sp{flex:1}
.xg-shelf-head .xg-btn{align-self:center}
.xg-books{display:grid;grid-template-columns:repeat(auto-fill,minmax(176px,1fr));gap:44px 32px}
.xg-book{display:flex;flex-direction:column;gap:14px;min-width:0;position:relative}
.xg-cover{position:relative;display:block;aspect-ratio:3/4;width:100%;border:0;border-radius:3px 6px 6px 3px;cursor:pointer;overflow:hidden;
  background:var(--c,#2f5743);box-shadow:0 1px 0 #0000000d,0 14px 26px -16px #1f3d3080;transition:transform .25s ease,box-shadow .25s ease}
.xg-cover::before{content:"";position:absolute;inset:0 auto 0 0;width:14px;background:repeating-linear-gradient(to bottom,transparent 0 18%,#f6f1e2 18% 19.2%,transparent 19.2% 25%);opacity:.55;border-right:1px solid #00000026}
.xg-cover:hover{transform:translateY(-3px);box-shadow:0 1px 0 #0000000d,0 22px 32px -18px #1f3d3099}
.xg-cover.tone-0{--c:#2b4f3d}.xg-cover.tone-1{--c:#4d5f45}.xg-cover.tone-2{--c:#2d4848}.xg-cover.tone-3{--c:#5b4b3a}
.xg-cover-title{position:absolute;top:12%;right:16%;max-height:62%;writing-mode:vertical-rl;padding:12px 7px;background:#f7f2e3;color:#24302a;font:500 15px/1.3 var(--xg-serif);letter-spacing:.18em;overflow:hidden;box-shadow:inset 0 0 0 1px #c9c0a5,inset 0 0 0 3px #f7f2e3,inset 0 0 0 4px #d8d0b8}
.xg-cover-seal{position:absolute;right:16%;bottom:10%;width:20px;height:20px;display:grid;place-items:center;background:var(--xg-seal);color:#f8e9df;font:600 11px/1 var(--xg-serif);border-radius:2px;opacity:.9}
.xg-book-info{display:grid;gap:4px;padding-right:28px;position:relative}
.xg-book-title{border:0;background:none;padding:0;text-align:left;font:500 16px/1.5 var(--xg-serif);color:var(--xg-text);cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.xg-book-title:hover{color:var(--xg-ink-2)}
.xg-book-meta{font-size:13px;color:var(--xg-muted);font-variant-numeric:tabular-nums}
.xg-book-time{font-size:12px;color:var(--xg-faint)}
.xg-book-menu{position:absolute;right:0;top:0}
.xg-book-menu summary{list-style:none;cursor:pointer;color:var(--xg-faint);padding:2px 6px;border-radius:5px;letter-spacing:1px}
.xg-book-menu summary::-webkit-details-marker{display:none}
.xg-book-menu summary:hover{background:var(--xg-ink-soft);color:var(--xg-ink)}
.xg-book-menu .book-menu-items{right:0;left:auto}
.xg-book-new{border:0;background:none;padding:0;cursor:pointer;text-align:left}
.xg-book-new .xg-cover{background:transparent;border:1.5px dashed #c8cfbf;box-shadow:none;display:grid;place-items:center;color:var(--xg-faint);font-size:30px}
.xg-book-new .xg-cover::before{display:none}
.xg-book-new:hover .xg-cover{border-color:var(--xg-ink-2);color:var(--xg-ink);transform:none}
.xg-book-new b{font:500 16px/1.5 var(--xg-serif);color:var(--xg-muted)}

@media(max-width:860px){.xg-page{padding:0 20px}.xg-hero{grid-template-columns:1fr;padding-top:10px}.xg-hero-art{order:-1}.xg-onb-grid{grid-template-columns:1fr}.xg-shelf-head{flex-wrap:wrap}.xg-books{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:32px 20px}}

/* ---------- workbench chrome ---------- */
.topbar{min-height:60px!important;padding:0 20px!important;gap:14px!important;background:#fff;border-bottom:1px solid var(--xg-line)!important}
.topbar>.ghost{color:var(--xg-muted)!important;font-size:13px!important}
.topbar>.ghost:hover{color:var(--xg-ink)!important}
.topbar .brandmark{width:26px!important;height:26px!important;border-radius:3px!important;background:var(--xg-seal)!important;color:#fbf3ea!important;font:600 15px/26px var(--xg-serif)!important;text-align:center}
.topbar .book b{font:500 17px/1.3 var(--xg-serif)!important;color:var(--xg-ink)!important;letter-spacing:.03em}
.topbar .book span{font-size:12px!important;color:var(--xg-faint)!important}
#stages{display:none!important}
.topbar .cheap{display:flex!important;margin-left:auto}
.topbar .editor-menu{margin-left:auto}
.banner{background:var(--xg-rail)!important;border-top:1px solid var(--xg-line)!important;color:var(--xg-faint)!important;font-size:11.5px!important;padding:5px 20px!important}
.layout{background:var(--xg-paper)!important}
.splitter{background:transparent}

/* file tree */
.pane-left{background:var(--xg-rail)!important;border-right:1px solid var(--xg-line)}
.left-rail{padding:18px 10px 24px!important}
.directory-heading{display:flex!important;align-items:center;gap:8px;padding:0 10px 14px!important;font-size:12px!important;color:var(--xg-muted)!important;letter-spacing:0!important}
.directory-heading>span:first-child{font-weight:600;color:var(--xg-text)}
.directory-heading .tree-total{flex:1;color:var(--xg-faint);font-variant-numeric:tabular-nums}
.directory-heading button{border:0;background:none;color:var(--xg-faint);cursor:pointer;font-size:15px;padding:2px 6px;border-radius:5px}
.directory-heading button:hover{background:#e8e8de;color:var(--xg-ink)}
.tree-book{display:none}
.tree-folder{margin:2px 0}
.tree-folder>summary{display:flex!important;align-items:center;gap:6px;list-style:none;cursor:pointer;padding:7px 10px!important;border-radius:6px;font-size:12.5px!important;font-weight:600;color:#4b5648!important}
.tree-folder>summary::-webkit-details-marker{display:none}
.tree-folder>summary>span:first-child{display:inline-block;width:10px;color:var(--xg-faint);transition:transform .15s}
.tree-folder[open]>summary>span:first-child{transform:rotate(90deg)}
.tree-folder>summary .folder-icon{display:none}
.tree-folder>summary small{margin-left:auto;font-weight:400;color:var(--xg-faint);font-size:11px}
.tree-folder>summary:hover{background:#ebebe1}
.tree-children{padding-left:6px!important;border-left:0!important;margin-left:8px!important}
.tree-file{display:flex!important;align-items:center;gap:8px;width:100%;min-height:32px;padding:5px 10px!important;border:0!important;border-radius:6px;background:transparent;text-align:left;font-size:13px!important;color:var(--xg-text)!important;cursor:pointer;box-sizing:border-box}
.tree-file:hover{background:#ebebe1}
.tree-file[aria-current=true]{background:#fff!important;box-shadow:0 0 0 1px var(--xg-line),inset 2px 0 var(--xg-ink-2);color:var(--xg-ink)!important;font-weight:500}
.tree-file-icon{width:12px;height:14px;flex-shrink:0;font-size:0!important;border:1.3px solid #a8b0a0;border-radius:2px;box-sizing:border-box;position:relative}
.tree-file-icon::after{content:"";position:absolute;left:2px;right:2px;top:3px;height:4px;border-top:1px solid #b9c0b1;border-bottom:1px solid #b9c0b1}
.tree-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tree-count{flex-shrink:0;font-size:11px!important;color:var(--xg-faint)!important;font-variant-numeric:tabular-nums;margin:0!important}
.tree-count.is-empty{color:#b3a68c!important}
.chapter-tree>.tree-children{margin-left:14px!important}
.chapter-tree>.tree-children .tree-file{min-height:28px;font-size:12px!important;color:var(--xg-muted)!important}
.chapter-tree>.tree-children .tree-file-icon{display:none}
.tree-add{display:block;width:100%;text-align:left;border:0;background:none;padding:6px 10px 6px 30px;font-size:12px;color:var(--xg-faint);cursor:pointer;border-radius:6px}
.tree-add:hover{color:var(--xg-ink);background:#ebebe1}

/* manuscript */
.pane-main{background:#fff!important}
.draft-head{padding:22px 40px 14px!important;border-bottom:0!important;background:#fff!important;align-items:baseline!important}
.draft-head h2{font:500 26px/1.4 var(--xg-serif)!important;color:var(--xg-ink)!important;letter-spacing:.04em;margin-right:auto}
.draft-head .rev{font-size:12.5px!important;color:var(--xg-faint)!important;font-variant-numeric:tabular-nums}
.draft-head .ghost{border:1px solid var(--xg-line)!important;border-radius:6px!important;color:var(--xg-muted)!important;background:#fff!important}
.draft-head .ghost:hover{color:var(--xg-ink)!important;border-color:#c4ccbc!important}
.draft-scroll{background:#fff!important;padding:18px 0 80px!important}
.draft-body{max-width:680px!important;margin:0 auto!important;padding:0 40px!important;font-family:var(--xg-serif)!important;font-size:18px!important;line-height:1.95!important;letter-spacing:.03em!important;color:#262f29!important;white-space:pre-wrap}
.draft-body:focus{outline:0}

/* assistant */
.assistant-head{padding:16px 22px 14px!important;border-bottom:1px solid var(--xg-line-2)!important}
.assistant-logo{background:var(--xg-seal)!important;border-radius:3px!important;width:28px!important;height:28px!important;font-size:16px!important}
.assistant-identity small{display:none!important}
.assistant-identity b{font:500 15px/1.3 var(--xg-serif)!important;color:var(--xg-ink)}
.assistant-progress{background:transparent!important;border-bottom:1px solid var(--xg-line-2)!important;padding:10px 22px!important}
.assistant-messages{padding:8px 22px 28px!important}
.assistant-message.author .assistant-message-content{background:var(--xg-ink-soft)!important;border:0!important;border-radius:12px 12px 3px 12px!important;font-size:13.5px!important;color:#1f3226}
.assistant-message.author{margin-left:28px}
.assistant-message-label{display:none}
.assistant-message.reply .assistant-message-content{font-size:14px!important;line-height:1.9;color:var(--xg-text)!important}
.assistant-message.host .assistant-message-content{font-size:12.5px;color:var(--xg-muted);line-height:1.85}
.assistant-composer{border:1px solid #d7dccf!important;border-radius:12px!important;box-shadow:0 6px 18px -12px #1f3d3040!important;background:#fff!important}
.assistant-composer:focus-within{border-color:var(--xg-ink-2)!important;box-shadow:0 0 0 3px #2f574314!important}
.assistant-send{background:var(--xg-ink)!important}
.assistant-compose-hint{display:none}
.assistant-welcome h3{font-family:var(--xg-serif)!important;color:var(--xg-ink)}
.project-assistant{background:var(--xg-paper)!important}

/* round 2 */
.tree-file>span,.tree-name{white-space:nowrap!important;overflow:hidden;text-overflow:ellipsis}
.tree-file{flex-wrap:nowrap!important}
.chapter-document-tabs{display:flex!important;align-items:center;gap:4px!important;padding:14px 40px 0!important;border:0!important;background:#fff!important}
.chapter-document-tabs b{margin-right:auto;font-size:12px!important;font-weight:400!important;color:var(--xg-faint)!important}
.chapter-document-tabs button{border:0!important;background:transparent!important;border-radius:6px!important;padding:5px 12px!important;font-size:12.5px!important;color:var(--xg-muted)!important;min-height:0!important;box-shadow:none!important}
.chapter-document-tabs button[aria-pressed=true]{background:var(--xg-ink-soft)!important;color:var(--xg-ink)!important;font-weight:500}
.writing-toolbar{padding:0 40px 12px!important;border-bottom:1px solid var(--xg-line-2)!important;background:#fff!important;font-size:12px!important}
.writing-toolbar>span{color:var(--xg-faint)!important}
.writing-toolbar button{border:0!important;background:none!important;color:var(--xg-muted)!important;font-size:12px!important;padding:4px 8px!important;border-radius:5px}
.writing-toolbar button:hover{background:var(--xg-ink-soft)!important;color:var(--xg-ink)!important}
.draft-head{padding-top:18px!important}
.xg-hero{grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr)}
.xg-hero-art img{max-height:78vh;transform:scale(1.15);transform-origin:center}

/* archive documents: reading view first, edit on demand */
.pane-main .pane-head{padding:22px 40px 8px!important;border:0!important}
.pane-main .pane-head h2{font:500 24px/1.4 var(--xg-serif)!important;color:var(--xg-ink)!important;letter-spacing:.03em}
.file-breadcrumb{font-size:12px;color:var(--xg-faint)}
.file-toolbar{display:flex;align-items:center;gap:4px;flex-wrap:wrap;padding:6px 40px 12px!important;border-bottom:1px solid var(--xg-line-2)!important;background:#fff!important}
.file-toolbar button{border:0!important;background:none!important;color:var(--xg-muted)!important;font-size:12.5px!important;padding:5px 10px!important;border-radius:6px!important;min-height:0!important;box-shadow:none!important}
.file-toolbar button:hover{background:var(--xg-ink-soft)!important;color:var(--xg-ink)!important}
.file-toolbar button.primary{background:var(--xg-ink)!important;color:#f8f6ec!important}
.file-toolbar>span{margin-left:auto;font-size:12px;color:var(--xg-faint);font-variant-numeric:tabular-nums}
.book-file-body{padding:24px 40px 80px!important;background:#fff}
.xg-prose,.book-file-text{max-width:680px;margin:0 auto;font-family:var(--xg-serif);font-size:16px;line-height:1.95;color:#28322b}
.xg-prose{cursor:text}
.xg-prose h1{font-size:22px;font-weight:500;color:var(--xg-ink);margin:0 0 18px}
.xg-prose h2{font-size:17px;font-weight:600;color:var(--xg-ink);margin:28px 0 8px;padding-top:4px}
.xg-prose h3{font-size:15.5px;font-weight:600;color:#3a4a3e;margin:20px 0 6px}
.xg-prose p{margin:0 0 10px}
.xg-prose ul,.xg-prose ol{padding-left:1.3em;margin:4px 0 12px}
.xg-prose li{margin:3px 0}
.xg-prose li::marker{color:#9aa592}
.xg-prose blockquote{margin:10px 0;padding:4px 14px;border-left:2px solid #c9d2c0;color:var(--xg-muted)}
.xg-prose table{border-collapse:collapse;font-size:14px;margin:10px 0}
.xg-prose td,.xg-prose th{border:1px solid var(--xg-line);padding:6px 10px}
.book-file-text{white-space:pre-wrap;outline:0;font-family:var(--xg-sans);font-size:14.5px;line-height:1.9;padding:14px 18px;border:1px solid var(--xg-line);border-radius:8px;background:#fdfdf9}

/* conversation threads */
.assistant-head-actions{display:flex;gap:6px}
.assistant-head-btn{border:1px solid var(--xg-line)!important;border-radius:7px;padding:5px 10px!important;font-size:12px!important;color:var(--xg-muted)!important;background:#fff!important;cursor:pointer}
.assistant-head-btn:hover{color:var(--xg-ink)!important;border-color:#c4ccbc!important}
.assistant-history-row.is-current{background:var(--xg-ink-soft)!important}

/* display settings (font / size / line) — display only */
.draft-body{font-family:var(--manuscript-font,var(--xg-serif))!important;font-size:var(--manuscript-size,18px)!important;line-height:var(--manuscript-line,2)!important}
.xg-prose{font-family:var(--manuscript-font,var(--xg-serif));font-size:calc(var(--manuscript-size,18px) - 2px);line-height:var(--manuscript-line,1.95)}
.writing-toolbar>div{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.writing-display select{border:1px solid var(--xg-line);border-radius:6px;background:#fff;color:var(--xg-muted);font-size:12px;padding:3px 6px;height:26px;cursor:pointer}
.writing-display select:hover{border-color:#c4ccbc;color:var(--xg-ink)}
.writing-toolbar [data-writing-format]{color:var(--xg-ink)!important;font-weight:500}
.writing-toolbar [data-writing-reading]{display:none!important}

.template-owner{color:#8a7f66!important}


/* typewriter caret */
.assistant-caret{display:inline-block;width:2px;height:1em;margin-left:2px;vertical-align:-2px;background:var(--xg-ink-2);animation:assistant-blink 1s steps(2,start) infinite}
@keyframes assistant-blink{to{visibility:hidden}}
@media(prefers-reduced-motion:reduce){.assistant-caret{animation:none}}

/* live manuscript */
.live-draft{max-width:760px;margin:0 auto}
.live-label{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:0 40px 14px;font-size:13px;color:var(--xg-ink);font-weight:500}
.live-label small{font-weight:400;color:var(--xg-faint);font-size:12px}
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--xg-seal);animation:live-pulse 1.2s ease-in-out infinite}
@keyframes live-pulse{50%{opacity:.25}}
.live-body{white-space:pre-wrap;color:#33403a!important}
.live-body::after{content:"";display:inline-block;width:2px;height:1.1em;margin-left:2px;vertical-align:-3px;background:var(--xg-ink-2);animation:assistant-blink 1s steps(2,start) infinite}
@media(prefers-reduced-motion:reduce){.live-dot,.live-body::after{animation:none}}