/* 字体策略：系统字体优先（绝大多数设备零下载），仅当系统缺字时才回落到内嵌子集字体。
   这样 Windows/macOS/iOS 直接命中楷体/宋体，webfont 不会产生任何流量；
   Android 等无楷体设备才下载 WenKaiSub，属可接受的降级。 */
@font-face{font-family:"WenKaiSub";src:url("/assets/wenkai-subset.woff2") format("woff2");font-weight:400;font-display:swap;unicode-range:U+2E80-9FFF,U+F900-FAFF,U+FF00-FFEF}
@font-face{font-family:"SongSub";src:url("/assets/serif-regular.woff2") format("woff2");font-weight:400 600;font-display:swap;unicode-range:U+2E80-9FFF,U+F900-FAFF,U+FF00-FFEF}
:root{
  --paper:#f6f1e4; --paper2:#efe8d7; --ink:#241f1a; --ink2:#584f43;
  --seal:#8a3a2a; --bamboo:#5a6f52; --line:#dbd1bb;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;color:var(--ink);background-color:var(--paper);
  font-family:"Kaiti SC",STKaiti,KaiTi,"楷体","KaiTi_GB2312","WenKaiSub",serif;
  font-size:19px;line-height:2.08;
  background-image:url("/assets/paper.png");background-repeat:repeat;background-size:512px 512px;
}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(ellipse 130% 100% at 50% 36%,rgba(84,64,36,0) 0%,rgba(84,64,36,.012) 38%,rgba(84,64,36,.028) 62%,rgba(84,64,36,.052) 82%,rgba(84,64,36,.080) 100%)}
.wrap{max-width:720px;margin:0 auto;padding:0 22px;position:relative;z-index:1}
a{color:var(--seal);text-decoration:none}
a:hover{opacity:.76}

/* ── 首页 ── */
.hero{padding:60px 0 0;text-align:center;position:relative}
.hero h1{
  font-family:"Songti SC","STSong","Source Han Serif SC","Noto Serif CJK SC",SimSun,"宋体","SongSub",serif;font-weight:600;
  font-size:58px;letter-spacing:.24em;margin:0 0 8px;text-indent:.24em;color:var(--ink);
}
.hero .sub{color:#4e463b;font-size:14px;letter-spacing:.2em;margin-top:12px;
  font-family:"Songti SC","STSong","Source Han Serif SC","Noto Serif CJK SC",SimSun,"宋体","SongSub",serif}
.hero .rule{width:96px;height:1px;background:var(--line);margin:16px auto 0;position:relative}
.hero .rule::before,.hero .rule::after{content:"";position:absolute;top:-2px;width:5px;height:5px;
  background:var(--seal);opacity:.5;transform:rotate(45deg)}
.hero .rule::before{left:-9px}.hero .rule::after{right:-9px}
.sealwrap{margin:24px 0 0}
.sealimg{width:88px;height:88px;transform:rotate(-4deg);opacity:.95;mix-blend-mode:multiply}
.mtn{display:block;width:100%;height:88px;object-fit:cover;margin-top:4px;opacity:.62;
  -webkit-mask-image:linear-gradient(to bottom,transparent,#000 22%,#000 78%,transparent);
  mask-image:linear-gradient(to bottom,transparent,#000 22%,#000 78%,transparent)}
.searchbox{margin:18px 0 0;position:relative}
.searchbox input{
  width:100%;padding:9px 4px 11px;font-size:15.5px;font-family:inherit;
  background:transparent;border:none;border-bottom:1px solid var(--line);
  color:var(--ink);outline:none;text-align:center;letter-spacing:.06em;
}
.searchbox input::placeholder{color:#7d7462;letter-spacing:.12em}
.searchbox input:focus{border-bottom-color:var(--seal);border-bottom-width:1.5px}
.searchbox::after{content:"";position:absolute;right:2px;top:11px;width:15px;height:15px;
  opacity:.42;pointer-events:none;
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234e463b' stroke-width='2.2'><circle cx='10.5' cy='10.5' r='6.5'/><path d='M15.5 15.5L21 21'/></svg>") center/contain no-repeat}
#sres{position:absolute;top:100%;left:0;right:0;background:#fffdf6;border:1px solid var(--line);
  max-height:330px;overflow:auto;display:none;z-index:30;text-align:left;
  box-shadow:0 10px 26px rgba(70,50,20,.12)}
#sres a{display:block;padding:9px 14px;border-bottom:1px solid #f2ecdf;font-size:15px;color:var(--ink)}
#sres a:last-child{border-bottom:none}
#sres a:hover{background:var(--paper2)}
#sres .v{color:var(--ink2);font-size:12.5px;margin-left:8px}
.acts{margin-top:24px;font-size:15.5px;letter-spacing:.1em}
.acts a{display:inline-block;margin:0 8px;padding:10px 34px;border:1px solid var(--line);
  background:rgba(255,253,246,.5);color:var(--ink2);transition:.18s;letter-spacing:.14em}
.acts a.main{color:#fbf7ee;background:var(--seal);border-color:#7a3225;opacity:.95;
  box-shadow:0 1px 0 rgba(120,60,40,.18),inset 0 0 0 .5px rgba(255,255,255,.13)}
.acts a.main:hover{opacity:1;transform:translateY(-.5px)}
.acts a.main:hover{opacity:1}
.acts a:not(.main):hover{border-color:var(--seal);color:var(--seal)}
.intro{max-width:520px;margin:26px auto 0;color:#5d5446;font-size:15.5px;line-height:1.95;
  letter-spacing:.04em;text-align:center}
.intro .au{font-family:"Songti SC","STSong","Source Han Serif SC","Noto Serif CJK SC",SimSun,"宋体","SongSub",serif;font-weight:600;font-size:13.5px;color:#7a2f22;
  letter-spacing:.24em;display:block;margin-bottom:9px;position:relative}
.intro .au::before,.intro .au::after{content:"◆";font-size:6px;vertical-align:middle;
  color:#a8564a;margin:0 9px;opacity:.75}

/* ── 卷目录 ── */
.tochead{text-align:center;color:var(--ink2);font-size:12.5px;letter-spacing:.42em;
  padding:40px 0 4px;font-family:"Songti SC","STSong","Source Han Serif SC","Noto Serif CJK SC",SimSun,"宋体","SongSub",serif}
.vol{margin:0;border-bottom:1px dashed #e2dac7}
.vol>summary{cursor:pointer;list-style:none;padding:15px 4px;display:flex;align-items:baseline;gap:12px}
.vol>summary::-webkit-details-marker{display:none}
.vol .vn{color:var(--seal);font-size:13px;letter-spacing:.14em;min-width:52px;
  font-family:"Songti SC","STSong",SimSun,"SongSub",serif;opacity:.9}
.vol .vt{font-family:"Songti SC","STSong","Source Han Serif SC","Noto Serif CJK SC",SimSun,"宋体","SongSub",serif;font-weight:600;font-size:19.5px;letter-spacing:.1em}
.vol .vc{color:#6b6355;font-size:12.5px;margin-left:auto;letter-spacing:.06em}
.vol .tg{color:var(--bamboo);font-size:12px;letter-spacing:.18em;min-width:44px;text-align:right}
.vol .tg::after{content:"展卷"}
.vol[open] .tg::after{content:"收卷"}
.chlist{padding:2px 0 14px 66px}
.chlist a{display:block;padding:5px 0;font-size:15.5px;color:#332d25}
.chlist a:hover{color:var(--seal)}

/* ── 阅读页 ── */
#bar{position:fixed;top:0;left:0;height:2px;background:var(--seal);width:0;z-index:50;opacity:.5}
.topbar{padding:15px 0;border-bottom:1px dashed #e2dac7;font-size:13px;color:var(--ink2);
  display:flex;align-items:center;gap:12px}
.topbar .bt{font-size:16.5px;color:var(--ink);letter-spacing:.18em;font-family:"Songti SC","STSong",SimSun,"SongSub",serif;font-weight:600}
.topbar .sp{margin-left:auto;display:flex;gap:14px;align-items:center}
.topbar .pn{color:var(--seal);opacity:.9}
.topbar .pn.off{color:#c2baa9;opacity:1}
.chhead{text-align:center;padding:40px 0 22px}
.chhead .vol{color:var(--seal);font-size:12.5px;letter-spacing:.3em;border:none;margin:0;display:block;opacity:.9}
.chhead h2{font-family:"Songti SC","STSong","Source Han Serif SC","Noto Serif CJK SC",SimSun,"宋体","SongSub",serif;font-weight:600;font-size:30px;letter-spacing:.12em;
  margin:14px 0 0}
.chhead .orn{color:#c3b9a4;letter-spacing:.6em;font-size:11px;margin-top:14px}
.chbody{font-size:19.5px;line-height:2.18;letter-spacing:.014em;padding-bottom:20px}
.chbody p{margin:0 0 1.0em;text-align:justify;text-indent:2em}
.chbody p.dateline{text-indent:0;text-align:center;font-family:"SongSub",serif;
  font-size:14px;color:#7b7261;letter-spacing:.22em;margin:0 0 1.6em}
.chbody p:not(.dateline):first-of-type{color:#3a342c}
.nav{display:flex;gap:10px;align-items:center;border-top:1px dashed #e2dac7;
  padding:22px 0 44px;font-size:14.5px}
.nav a,.nav span{flex:1;text-align:center;padding:11px 6px;border:1px solid var(--line);
  background:rgba(255,253,246,.55)}
.nav span{color:#bdb5a5}
.nav .mid{flex:0 0 88px;color:var(--ink2)}
.foot{padding:26px 0 44px;text-align:center;color:var(--ink2);font-size:12px;
  border-top:1px dashed #e2dac7;letter-spacing:.16em}
#top{position:fixed;right:18px;bottom:22px;width:42px;height:42px;border-radius:50%;
  background:rgba(239,232,215,.94);border:1px solid var(--line);color:var(--ink2);
  display:none;align-items:center;justify-content:center;cursor:pointer;font-size:15px;z-index:40}
#fs{position:fixed;right:18px;bottom:74px;display:flex;flex-direction:column;gap:6px;z-index:40}
#fs button{width:42px;height:33px;border-radius:2px;background:rgba(239,232,215,.94);
  border:1px solid var(--line);color:var(--ink2);font-family:inherit;font-size:13px;cursor:pointer}
#fs button:active{background:var(--paper2)}
#fs button.on{background:var(--seal);color:#fbf7ee;border-color:var(--seal);opacity:.9}
@media (max-width:640px){
  body{font-size:18px}
  .hero{padding:42px 0 0}
  .hero h1{font-size:42px}
  .sealimg{width:70px;height:70px}
  .mtn{height:64px}
  .chbody{font-size:18.5px;line-height:2.08}
  .chhead h2{font-size:25px}
  .chlist{padding-left:16px}
  .topbar .sp{gap:10px}
}
@media print{#fs,#top,#bar,.nav,.topbar{display:none!important}body{background:#fff}}