/* Two distinct navigation columns: space documents, then this document's headings. */
#calm-reader .rsn-space{display:none;min-width:0;min-height:0;background:color-mix(in srgb,var(--cr-bg,#fff) 96%,var(--cr-muted,#64748b));color:var(--cr-text,#263238);font:14px/1.5 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;flex-direction:column;border-right:1px solid color-mix(in srgb,var(--cr-muted,#64748b) 13%,transparent);overflow:hidden}
#calm-reader .rsn-heading{display:flex;align-items:center;justify-content:space-between;padding:20px 14px 10px;gap:8px;flex:none}
#calm-reader .rsn-heading>span{display:flex;align-items:center;gap:8px;min-width:0}.rsn-heading strong{font-size:15px;font-weight:550;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#calm-reader .rsn-space svg,#calm-reader .rsn-restore svg{width:18px;height:18px;flex:none}
#calm-reader .rsn-heading button{width:30px;height:30px;display:grid;place-items:center;padding:0;color:var(--cr-muted);border:0;background:transparent}
#calm-reader .rsn-search{display:flex;gap:8px;align-items:center;margin:6px 12px 12px;padding:8px 10px;border:1px solid color-mix(in srgb,var(--cr-muted,#64748b) 20%,transparent);border-radius:7px;background:var(--cr-bg,#fff);color:var(--cr-muted);flex:none}
#calm-reader .rsn-search input{font:inherit;width:100%;min-width:0;border:0;background:transparent;padding:0;outline:none;color:var(--cr-text)}
#calm-reader .rsn-search:focus-within{outline:2px solid var(--cr-accent);outline-offset:1px}
#calm-reader .rsn-filter{display:flex;align-items:center;gap:7px;margin:0 12px 10px;font-size:12px;color:var(--cr-muted);flex:none}
#calm-reader .rsn-filter>span{flex:none;white-space:nowrap}
#calm-reader .rsn-filter select{font:inherit;color:var(--cr-text);border:0;background:transparent;width:100%;min-width:0;cursor:pointer;padding:5px}
#calm-reader #rsn-documents{overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable;min-height:0;flex:1;padding:0 7px 14px}
#calm-reader #rsn-documents summary{display:flex;align-items:center;gap:6px;list-style:none;cursor:pointer;padding:10px 5px;color:var(--cr-muted);font-size:12px}
#calm-reader #rsn-documents summary::-webkit-details-marker{display:none}
#calm-reader #rsn-documents summary>svg:first-child{width:12px;height:12px;transition:transform .12s}
#calm-reader #rsn-documents details[open]>summary>svg:first-child{transform:rotate(90deg)}
#calm-reader #rsn-documents summary>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}#calm-reader #rsn-documents small{font-size:11px;font-variant-numeric:tabular-nums}
#calm-reader #rsn-documents button{display:flex;align-items:center;gap:8px;text-align:left;width:100%;min-width:0;padding:11px 12px 11px 25px;border:0;border-radius:6px;background:transparent;color:var(--cr-text);font:14px/1.45 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;cursor:pointer;margin:2px 0;white-space:normal}
#calm-reader #rsn-documents button span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
#calm-reader #rsn-documents button>svg{color:var(--cr-accent)}
#calm-reader #rsn-documents button:hover{background:color-mix(in srgb,var(--cr-accent) 6%,transparent)}
#calm-reader #rsn-documents button[aria-current]{background:color-mix(in srgb,var(--cr-accent) 11%,transparent);color:var(--cr-accent);font-weight:550}
#calm-reader .rsn-status,#calm-reader .rsn-empty{font-size:12px;color:var(--cr-muted);margin:0;padding:12px 16px}
#calm-reader .rsn-status{flex:none;border-top:1px solid color-mix(in srgb,var(--cr-muted,#64748b) 10%,transparent)}
#calm-reader .rsn-restore{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--cr-muted);white-space:nowrap;flex:none}
#calm-reader .rsn-space button:focus-visible,#calm-reader #rsn-documents summary:focus-visible,#calm-reader .rsn-filter select:focus-visible{outline:2px solid var(--cr-accent);outline-offset:-2px}
@media(min-width:1101px){
 #calm-reader.cr-three-column:not(.cr-focus){--rsn-space-width:252px;--rsn-outline-width:220px}
 #calm-reader.cr-three-column:not(.cr-focus).rsn-collapsed{--rsn-space-width:0px}
 #calm-reader.cr-three-column:not(.cr-focus).cr-no-toc{--rsn-outline-width:0px}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-layout{grid-template-columns:var(--rsn-space-width) var(--rsn-outline-width) minmax(0,1fr)!important;grid-template-rows:minmax(0,1fr);gap:0;padding:0!important;position:relative;min-height:0}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-layout>.rsn-space{display:flex;grid-column:1;grid-row:1;width:var(--rsn-space-width)}
 #calm-reader.cr-three-column:not(.cr-focus).rsn-collapsed .rsn-space{display:none}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-layout>.cr-toc{display:block!important;grid-column:2!important;grid-row:1;justify-self:stretch;width:100%;min-width:0;max-width:none;overflow:auto;overscroll-behavior:contain;padding:22px 14px;background:var(--cr-bg,#fff);border-right:1px solid color-mix(in srgb,var(--cr-muted,#64748b) 11%,transparent)}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-toc-content{position:static;margin:0;padding:0;max-height:none}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-toc-heading{position:sticky;top:-22px;background:var(--cr-bg,#fff);padding:0 0 12px;z-index:1}
 #calm-reader.cr-three-column:not(.cr-focus) #cr-outline{max-height:none;overflow:visible}
 #calm-reader.cr-three-column:not(.cr-focus) #cr-outline button{line-height:1.65;padding-block:9px}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-layout>#cr-scroll{grid-column:3!important;grid-row:1;width:100%;min-width:0;min-height:0;overflow:auto;overscroll-behavior:contain}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-article{max-width:1400px!important;margin:0!important;padding:40px clamp(28px,4vw,72px) 140px!important}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-layout>.cr-panel{position:absolute!important;grid-column:auto!important;inset:0 0 0 auto!important;width:min(400px,45%)!important;max-width:none!important;z-index:12;border-left:1px solid color-mix(in srgb,var(--cr-muted,#64748b) 15%,transparent);box-shadow:-12px 0 32px #1018280a}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-toc-restore{left:calc(var(--rsn-space-width) + 10px)!important;top:14px}
}
#calm-reader.cr-focus .rsn-space,#calm-reader.cr-focus .rsn-restore{display:none!important}
@media(max-width:1100px){
 #calm-reader.cr-three-column.rsn-mobile-docs:not(.cr-focus) .rsn-space{display:flex;position:absolute;inset:0 auto 0 0;width:min(300px,85vw);z-index:22;box-shadow:12px 0 30px #10182822;background:var(--cr-bg,#fff)}
}
@media(prefers-reduced-motion:reduce){#calm-reader #rsn-documents summary>svg{transition:none}}

#calm-reader .rsn-filter[hidden]{display:none}

/* Compact navigation: neutralize inherited header/nav sizing before setting row rhythm. */
#calm-reader.cr-three-column .rsn-space>.rsn-heading{
 height:44px!important;min-height:44px!important;max-height:44px;flex:0 0 44px!important;
 margin:0!important;padding:8px 12px!important;
}
#calm-reader.cr-three-column .rsn-heading button{height:28px;min-height:28px;width:28px}
#calm-reader.cr-three-column .rsn-search{margin:2px 12px 8px;padding:7px 10px}
#calm-reader.cr-three-column .rsn-filter{margin:0 12px 6px}
#calm-reader.cr-three-column #rsn-documents{display:block!important;gap:0!important;padding:0 7px 10px}
#calm-reader.cr-three-column #rsn-documents details{display:block;margin:0 0 4px!important;padding:0;border:0}
#calm-reader.cr-three-column #rsn-documents details>div{display:block;margin:0;padding:0}
#calm-reader.cr-three-column #rsn-documents summary{height:30px;min-height:30px;box-sizing:border-box;padding:4px 5px;margin:0}
#calm-reader.cr-three-column #rsn-documents button{height:32px;min-height:32px;box-sizing:border-box;line-height:20px;padding:5px 10px 5px 25px;margin:0!important}
#calm-reader.cr-three-column .rsn-status{padding:8px 14px}
#calm-reader.cr-three-column .cr-toc-content{border-right:0!important;border-inline-end:0!important}
#calm-reader.cr-three-column .cr-toc-heading{height:32px;min-height:32px;box-sizing:border-box;margin:0 0 6px!important;padding:0 0 4px!important}
#calm-reader.cr-three-column .cr-toc-heading h2{margin:0!important}
#calm-reader.cr-three-column #cr-outline button{min-height:30px;line-height:20px!important;padding-block:5px!important;margin:0!important;border-right:0!important;border-inline-end:0!important}
@media(min-width:1101px){
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-layout>.cr-toc{padding:8px 12px 16px;border-right:0!important;border-inline-end:0!important}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-toc-heading{top:-8px}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-layout>#cr-scroll{border-left:0!important;border-inline-start:0!important}
}

/* A collapsed outline uses a direction cue without a persistent text label. */
#calm-reader .cr-toc-restore{width:30px!important;height:30px!important;min-width:30px!important;min-height:30px!important;padding:5px!important;gap:0!important;justify-content:center;align-items:center;border:0!important;background:transparent;border-radius:5px}
#calm-reader .cr-toc-restore>span,#calm-reader .cr-toc-restore>svg{display:none!important}
#calm-reader .cr-toc-restore::before{content:"";display:block;width:20px;height:20px;flex:none;background:currentColor;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m9 5 7 7-7 7'/%3E%3C/svg%3E") center/contain no-repeat}
#calm-reader .cr-toc-restore:hover{background:color-mix(in srgb,var(--cr-accent) 7%,transparent)}
#calm-reader .cr-toc-restore:focus-visible{outline:2px solid var(--cr-accent);outline-offset:2px}

/* Sliding document drawer; released space widens the heading outline. */
@media(min-width:1101px){
 #calm-reader.cr-three-column:not(.cr-focus){--rsn-space-width:252px;--rsn-outline-width:240px}
 #calm-reader.cr-three-column:not(.cr-focus).rsn-collapsed{--rsn-space-width:0px;--rsn-outline-width:340px}
 #calm-reader.cr-three-column:not(.cr-focus).cr-no-toc{--rsn-outline-width:0px}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-layout{transition:grid-template-columns 240ms ease}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-layout>.rsn-space{display:flex;width:252px;transform:translateX(0);opacity:1;visibility:visible;transition:transform 240ms ease,opacity 180ms ease,visibility 240ms}
 #calm-reader.cr-three-column:not(.cr-focus).rsn-collapsed .cr-layout>.rsn-space{display:flex;transform:translateX(-100%);opacity:0;visibility:hidden;pointer-events:none}
 #calm-reader.cr-three-column:not(.cr-focus) .cr-shell .cr-layout>.cr-toc{overflow-x:hidden}
 #calm-reader.cr-three-column:not(.cr-focus).cr-no-toc .cr-shell .cr-layout>.cr-toc{visibility:hidden;pointer-events:none;padding-inline:0}
}
#calm-reader.cr-three-column #cr-outline button{
 display:block;box-sizing:border-box;width:100%;text-align:left;
 padding:7px 8px 7px calc(8px + var(--rsn-heading-depth,0) * 14px)!important;
 line-height:1.6!important;white-space:normal;overflow-wrap:anywhere;
 height:auto;min-height:34px;font-size:13px;
}
#calm-reader.cr-three-column #cr-outline button.cr-current{color:var(--cr-accent);font-weight:550;background:color-mix(in srgb,var(--cr-accent) 6%,transparent);border-radius:4px}
#calm-reader .rsn-heading [data-rsn-toggle] svg{transform:rotate(180deg)}
#calm-reader .rsn-restore svg{transform:none}
@media(prefers-reduced-motion:reduce){
 #calm-reader.cr-three-column .cr-shell .cr-layout,#calm-reader.cr-three-column .cr-layout>.rsn-space{transition:none!important}
}

@media(max-width:1100px){
 #calm-reader.cr-three-column:not(.cr-focus) .cr-layout>.rsn-space{display:flex;position:absolute;inset:0 auto 0 0;width:min(300px,85vw);z-index:22;background:var(--cr-bg,#fff);transform:translateX(-100%);opacity:0;visibility:hidden;pointer-events:none;transition:transform 240ms ease,opacity 180ms ease,visibility 240ms}
 #calm-reader.cr-three-column.rsn-mobile-docs:not(.cr-focus) .cr-layout>.rsn-space{transform:translateX(0);opacity:1;visibility:visible;pointer-events:auto;box-shadow:12px 0 30px #10182822}
}

/* Consistent navigation rhythm and file format colors. */
#calm-reader.cr-three-column #cr-outline{display:flex;flex-direction:column;gap:2px}
#calm-reader.cr-three-column #cr-outline button{padding-block:6px!important;min-height:34px;line-height:1.55!important}
#calm-reader.cr-three-column #cr-outline button[style*="--rsn-heading-depth: 0"]:not(:first-child){margin-top:6px!important}
#calm-reader.cr-three-column #rsn-documents details{margin-bottom:8px!important}
#calm-reader.cr-three-column #rsn-documents button{gap:8px;height:auto;min-height:34px;padding-block:6px;margin-block:2px!important;align-items:flex-start}
#calm-reader.cr-three-column #rsn-documents button>span:not(.rsn-file-icon){white-space:normal;overflow-wrap:anywhere;line-height:22px}
#calm-reader #rsn-documents .rsn-file-icon{display:inline-flex;align-items:center;justify-content:center;flex:0 0 20px;width:20px;height:22px;color:var(--cr-muted,#77808e)}
#calm-reader #rsn-documents .rsn-file-icon svg{width:20px;height:22px;color:inherit}

/* Neutral file marks and one shared title alignment, following the reference. */
#calm-reader.cr-three-column #rsn-documents{padding:0 8px 12px}
#calm-reader.cr-three-column #rsn-documents details{margin-bottom:12px!important}
#calm-reader.cr-three-column #rsn-documents summary{display:flex;gap:6px;height:auto;min-height:34px;padding:7px 4px;margin:0}
#calm-reader.cr-three-column #rsn-documents summary>svg:first-child{width:10px;height:10px}
#calm-reader.cr-three-column #rsn-documents summary>svg:nth-child(2){width:18px;height:18px}
#calm-reader.cr-three-column #rsn-documents button{padding:7px 10px 7px 20px;gap:6px;min-height:36px;border-radius:6px;align-items:flex-start;font-weight:400}
#calm-reader #rsn-documents .rsn-file-icon{flex:0 0 18px;width:18px;height:22px;color:var(--cr-muted,#77808e)}
#calm-reader #rsn-documents .rsn-file-icon svg{width:18px;height:18px;color:inherit}
#calm-reader.cr-three-column #rsn-documents button[aria-current]{background:color-mix(in srgb,var(--cr-muted,#77808e) 12%,transparent);color:var(--cr-text);font-weight:500}
#calm-reader.cr-three-column #rsn-documents button:hover{background:color-mix(in srgb,var(--cr-muted,#77808e) 8%,transparent)}
#calm-reader.cr-three-column #cr-outline button{padding-left:calc(8px + var(--rsn-heading-depth,0) * 12px)!important}
#calm-reader.cr-three-column #cr-outline button.cr-current{background:color-mix(in srgb,var(--cr-muted,#77808e) 12%,transparent);color:var(--cr-text);font-weight:500}

/* Reference sidebar: a single folder mark, with all titles on one axis. */
#calm-reader.cr-three-column #rsn-documents summary{padding:8px 10px;gap:10px;min-height:38px;font-size:14px;color:var(--cr-text)}
#calm-reader.cr-three-column #rsn-documents summary>svg:first-child{width:20px;height:20px;transform:none;flex:none;color:var(--cr-text)}
#calm-reader.cr-three-column #rsn-documents details[open]>summary>svg:first-child{transform:none}
#calm-reader.cr-three-column #rsn-documents button{padding:8px 10px 8px 40px;min-height:38px;gap:0;border-radius:6px}
#calm-reader.cr-three-column #rsn-documents button>span{line-height:22px}

/* Open/closed folder variants share the same slot. */
#calm-reader #rsn-documents summary>.rsn-folder-open,#calm-reader #rsn-documents summary>.rsn-folder-closed{flex:0 0 20px;width:20px;height:20px;overflow:visible}
#calm-reader #rsn-documents .rsn-folder-open{display:none}
#calm-reader #rsn-documents .rsn-folder-closed{display:inline-flex}
#calm-reader #rsn-documents details[open]>summary>.rsn-folder-open{display:inline-flex}
#calm-reader #rsn-documents details[open]>summary>.rsn-folder-closed{display:none}
#calm-reader #rsn-documents summary .rsn-group-title{flex:1;min-width:0}
#calm-reader.cr-three-column #rsn-documents summary>.rsn-rename{display:grid;place-items:center;flex:0 0 26px;width:26px;height:26px;min-height:26px;padding:4px;margin:0!important;opacity:0;color:var(--cr-muted);background:transparent}
#calm-reader #rsn-documents summary:hover>.rsn-rename,#calm-reader #rsn-documents summary:focus-within>.rsn-rename{opacity:1}
#calm-reader #rsn-documents summary>.rsn-rename svg{width:16px;height:16px}
@media(hover:none){#calm-reader #rsn-documents summary>.rsn-rename{opacity:1}}

/* 目录条目与左栏文件名不换行、超长省略号（覆盖 three-column 换行规则，2026-11-02 v2） */
#calm-reader #cr-outline button,
#calm-reader.cr-three-column #cr-outline button{white-space:nowrap!important;overflow:hidden!important;text-overflow:ellipsis!important;overflow-wrap:normal!important;word-break:normal!important}
#calm-reader #rsn-documents button span,
#calm-reader.cr-three-column #rsn-documents button>span:not(.rsn-file-icon){white-space:nowrap!important;overflow:hidden!important;text-overflow:ellipsis!important;overflow-wrap:normal!important;min-width:0}