/* ═══════════════════════════════════════════════════════════════
   reader.css · 藏经阅读层 · bofei.com 禅的边界 · 2026-10-29 17:12
   只为 /articles/ 原文页服务（由 js/reader.js 决定启用）。
   原则：原文一字不动，只给卷、给目、给灯、给书签。
   ═══════════════════════════════════════════════════════════════ */

/* ── 进度脊：贴在视口最上沿，压在顶栏之上 ── */
#rdSpine{position:fixed;top:0;left:0;height:2px;width:0;z-index:10001;
  background:linear-gradient(90deg,rgba(184,118,74,.85),rgba(196,164,106,.95));
  transition:width .12s linear;pointer-events:none;}

/* ── 页首小传：卷数·字数·读数 ── */
.rd-meta{max-width:860px;margin:-.4rem auto 2rem;padding:0 2rem;
  font-family:'Noto Serif SC',serif;font-size:.72rem;letter-spacing:.14em;
  color:#8b7355;display:flex;flex-wrap:wrap;gap:.5rem 1.2rem;align-items:baseline;}
.rd-meta b{font-weight:400;color:#b8764a;}
.rd-note{max-width:860px;margin:0 auto 2.2rem;padding:.9rem 1.2rem;
  border-left:2px solid rgba(90,122,102,.55);background:rgba(90,122,102,.05);
  font-family:'Noto Serif SC',serif;font-size:.8rem;line-height:2;color:#5a6b5f;letter-spacing:.03em;}
.rd-note span{font-size:.62rem;letter-spacing:.3em;color:#8aa091;display:block;margin-bottom:.35rem;}

/* ── 卷 ── */
.rd-j{position:relative;}
.rd-j + .rd-j{margin-top:3.4rem;}
.rd-jh{display:flex;align-items:baseline;gap:.9rem;flex-wrap:wrap;
  margin:3.2rem 0 1.6rem;padding-bottom:.7rem;
  border-bottom:1px solid rgba(184,118,74,.28);
  font-family:'Noto Serif SC',serif;font-size:1.02rem;font-weight:700;
  letter-spacing:.16em;color:#8a4b2a;}
.rd-jh::before{content:'';position:absolute;left:0;bottom:-1px;width:64px;height:1px;background:#b8764a;}
.rd-jh .rd-jn{white-space:nowrap;}
.rd-jh .rd-jx{font-size:.66rem;font-weight:400;letter-spacing:.1em;color:#a89478;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46%;}
.rd-jend{margin:1.6rem 0 .4rem;text-align:center;font-family:'Noto Serif SC',serif;
  font-size:.6rem;letter-spacing:.5em;color:rgba(184,118,74,.45);}

/* ── 正文：只调呼吸，不改文字 ── */
.rd-doc{font-family:'Noto Serif SC','Songti SC',serif;letter-spacing:.02em;}
.rd-doc p{margin:0 0 1.05em;text-indent:2em;}
.rd-doc p.rd-flush{text-indent:0;}

/* ── 读器工具条 ── */
#rdBar{position:fixed;right:16px;bottom:16px;z-index:9998;display:flex;align-items:center;gap:1px;
  padding:5px;border-radius:999px;background:rgba(30,45,35,.9);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:0 6px 22px rgba(20,25,20,.28);font-family:'Noto Serif SC',serif;}
#rdBar button{appearance:none;border:0;background:none;cursor:pointer;color:rgba(250,247,242,.72);
  font-family:inherit;font-size:.72rem;letter-spacing:.06em;line-height:1;
  padding:.5rem .62rem;border-radius:999px;transition:background .25s,color .25s;}
#rdBar button:hover{background:rgba(196,164,106,.18);color:#f0e6d2;}
#rdBar button.on{color:#1e2d23;background:rgba(196,164,106,.85);}
#rdBar .rd-sep{width:1px;height:14px;background:rgba(250,247,242,.16);margin:0 3px;}

/* ── 卷目 ── */
#rdToc{position:fixed;right:16px;top:74px;z-index:9997;width:196px;max-height:70vh;overflow:auto;
  padding:.9rem .2rem .9rem .9rem;border-radius:4px;background:rgba(250,247,242,.96);
  border:1px solid rgba(184,118,74,.22);box-shadow:0 8px 28px rgba(60,50,35,.12);
  font-family:'Noto Serif SC',serif;opacity:0;pointer-events:none;transform:translateY(-6px);
  transition:opacity .3s,transform .3s;}
#rdToc.on{opacity:1;pointer-events:auto;transform:none;}
#rdToc .rd-toc-t{font-size:.58rem;letter-spacing:.42em;color:#b8764a;margin:0 0 .7rem .1rem;}
#rdToc a{display:block;padding:.30rem .1rem;font-size:.72rem;letter-spacing:.08em;
  color:#6b6558;text-decoration:none;border-bottom:1px dotted rgba(184,118,74,.13);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s;}
#rdToc a:hover{color:#b8764a;}
#rdToc a.cur{color:#8a4b2a;font-weight:700;}
#rdToc a .rd-toc-x{color:rgba(107,101,88,.45);font-size:.64rem;margin-left:.45rem;}
@media (max-width:1240px){
  #rdToc{right:12px;top:auto;bottom:70px;max-height:56vh;width:min(72vw,240px);}
}

/* ── 续读提示 ── */
#rdResume{position:fixed;left:50%;bottom:22px;transform:translate(-50%,12px);z-index:9999;
  display:none;align-items:center;gap:.9rem;padding:.6rem .7rem .6rem 1.1rem;border-radius:999px;
  background:rgba(250,247,242,.97);border:1px solid rgba(184,118,74,.35);
  box-shadow:0 8px 28px rgba(60,50,35,.16);font-family:'Noto Serif SC',serif;
  font-size:.74rem;letter-spacing:.08em;color:#6b6558;opacity:0;transition:opacity .5s,transform .5s;}
#rdResume.on{display:flex;opacity:1;transform:translate(-50%,0);}
#rdResume a,#rdResume button{appearance:none;border:0;cursor:pointer;font-family:inherit;
  font-size:.72rem;letter-spacing:.1em;padding:.35rem .8rem;border-radius:999px;text-decoration:none;}
#rdResume .go{background:rgba(184,118,74,.14);color:#8a4b2a;border:1px solid rgba(184,118,74,.35);}
#rdResume .no{background:none;color:#a89478;}
@media (max-width:560px){#rdResume{bottom:66px;font-size:.68rem;}}

/* ── 夜读 ── */
html.rd-night body{background:#14110d !important;color:#ddd3c2 !important;}
html.rd-night article,html.rd-night .post-content{background:transparent !important;color:#ddd3c2 !important;}
html.rd-night .post-content *{color:#ddd3c2 !important;border-color:rgba(196,164,106,.18) !important;}
html.rd-night .post-content a{color:#c4a46a !important;}
html.rd-night h1,html.rd-night .post-meta,html.rd-night .breadcrumb,html.rd-night .breadcrumb a{color:#9d9483 !important;}
html.rd-night .rd-jh{color:#c99a72 !important;border-bottom-color:rgba(196,164,106,.22) !important;}
html.rd-night .rd-meta,html.rd-night .rd-note{color:#a99e88 !important;}
html.rd-night body > nav{background:rgba(20,17,13,.96) !important;}
html.rd-night #rdToc{background:rgba(30,26,20,.97);border-color:rgba(196,164,106,.25);}
html.rd-night #rdToc a{color:#b3a892;border-bottom-color:rgba(196,164,106,.12);}
html.rd-night #rdToc a.cur{color:#e0c894;}

/* ── 静读 ── */
html.rd-quiet .inner-nav,html.rd-quiet body > nav,html.rd-quiet .breadcrumb,
html.rd-quiet footer,html.rd-quiet .post-meta,html.rd-quiet #rdToc{display:none !important;}
html.rd-quiet article{max-width:34em !important;margin-top:4rem !important;}
html.rd-quiet body{padding-top:0 !important;}
html.rd-quiet .rd-doc p{margin-bottom:1.25em;}

/* ── 卷末 ── */
.rd-fin{max-width:860px;margin:3.5rem auto 2rem;padding:2rem 1.2rem 0;
  border-top:1px solid rgba(184,118,74,.25);text-align:center;font-family:'Noto Serif SC',serif;}
.rd-fin .rd-fin-t{font-size:.6rem;letter-spacing:.5em;color:rgba(184,118,74,.6);margin-bottom:1rem;}
.rd-fin a{display:inline-block;margin:.3rem .35rem;padding:.5rem 1.2rem;font-size:.72rem;
  letter-spacing:.12em;color:#8a4b2a;text-decoration:none;border:1px solid rgba(184,118,74,.3);
  border-radius:3px;transition:all .3s;}
.rd-fin a:hover{background:rgba(184,118,74,.08);border-color:#b8764a;}
.rd-fin .rd-fin-q{margin-top:1.4rem;font-size:.7rem;color:rgba(107,101,88,.6);letter-spacing:.1em;}