/* literary-lab · 排版系统
   目标：中文可读性优先 —— 正文黑体、引文衬线、层级靠字号+字重+留白，不靠花哨装饰。 */
:root{
  --bg:#faf8f4; --bg-elev:#fffdf9; --ink:#1f1d1a; --ink-2:#3f3a33; --muted:#7c766b;
  --line:#e7e1d5; --line-2:#d9d0bf; --accent:#8c2f24; --accent-soft:#f6ece7;
  --quote:#f4efe4; --chip:#f2ede2;
  --sans:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --fs:clamp(16px,.95rem + .22vw,17.5px);
  --lh:1.9;
  --w-prose:39em;
  --shadow:0 1px 2px rgba(31,29,26,.04),0 12px 28px -18px rgba(31,29,26,.22);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#141312;--bg-elev:#1b1a18;--ink:#ece6da;--ink-2:#cfc7b8;--muted:#968e80;
        --line:#2c2925;--line-2:#3b362f;--accent:#e58a7c;--accent-soft:#2a1f1c;--quote:#211e1a;--chip:#242019;
        --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 28px -18px rgba(0,0,0,.6);}
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:var(--fs);line-height:var(--lh);
  font-synthesis:none;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right);
}
::selection{background:var(--accent);color:#fff}
a{color:var(--accent);text-decoration:none;text-underline-offset:3px;text-decoration-thickness:1px;border:0}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}

.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:.6rem 1rem;z-index:100}
.skip:focus{left:1rem;top:1rem}

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:1.25rem;
  padding:.55rem clamp(.9rem,3vw,2.5rem);min-height:56px;
  background:rgba(250,248,244,.94);border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:saturate(180%) blur(12px);backdrop-filter:saturate(180%) blur(12px);
  padding-top:max(.55rem,env(safe-area-inset-top));
}
@media (prefers-color-scheme:dark){.top{background:rgba(20,19,18,.94)}}
.brand{display:inline-flex;align-items:center;gap:.45rem;font-family:var(--serif);font-weight:700;
  font-size:1.05rem;color:var(--ink);white-space:nowrap}
.brand .mark{color:var(--accent);font-size:1.15rem;line-height:1}
.nav{display:flex;gap:.2rem;margin-left:auto;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--muted);font-size:.9rem;padding:.5rem .62rem;border-radius:8px;white-space:nowrap}
.nav a:hover{color:var(--ink);background:var(--chip);text-decoration:none}
.nav a[aria-current]{color:var(--accent);background:var(--accent-soft);font-weight:600}

/* ---------- 版心 ---------- */
.wrap{max-width:1180px;margin:0 auto;padding:clamp(1.2rem,3vw,2.4rem) clamp(.9rem,3vw,2.5rem) 4.5rem}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 232px;gap:clamp(2rem,4vw,3.5rem);align-items:start}
.layout.no-aside{grid-template-columns:minmax(0,1fr)}
.prose{min-width:0;max-width:none}
.prose > :where(p,ul,ol,blockquote,h1,h2,h3,h4){max-width:38em}
.crumbs{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;font-size:.8rem;color:var(--muted);margin-bottom:1.4rem}
.crumbs a{color:var(--muted);border:0}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{opacity:.45}

/* ---------- 标题层级 ---------- */
h1,h2,h3,h4{text-wrap:balance;margin:0;color:var(--ink)}
h1{font-size:clamp(1.6rem,1.25rem + 1.5vw,2.15rem);line-height:1.4;letter-spacing:-.01em;font-weight:700;margin:.1em 0 .8em}
h2{font-size:clamp(1.18rem,1.05rem + .5vw,1.4rem);line-height:1.5;font-weight:700;
   margin:2.6em 0 .9em;padding-left:.7rem;border-left:3px solid var(--accent);scroll-margin-top:80px}
h3{font-size:1.06rem;line-height:1.6;font-weight:650;margin:2.1em 0 .6em;scroll-margin-top:80px}
h4{font-size:.98rem;font-weight:600;color:var(--ink-2);margin:1.6em 0 .4em}
h1:first-child,h2:first-child{margin-top:0}

/* ---------- 正文 ---------- */
p{margin:.95em 0;text-align:justify;text-justify:inter-ideograph;overflow-wrap:break-word}
ul,ol{margin:1em 0;padding-left:1.5em}
li{margin:.45em 0}
li::marker{color:var(--muted)}
strong{font-weight:700;color:var(--ink)}
em{font-style:normal;font-family:var(--serif)}
hr{border:0;height:1px;background:var(--line);margin:2.6em 0}
small{font-size:.86em;color:var(--muted)}

/* 摘要式列表：定位 / 特质 / 机制 这类键值行 */
li.kv{list-style:none;margin:.4em 0;padding-left:0;display:flex;gap:.6rem;align-items:baseline}
li.kv::before{display:none}
li.kv .k{flex:0 0 4.2em;font-size:.78rem;font-weight:600;color:var(--accent);
  letter-spacing:.04em;font-family:var(--sans);padding-top:.18em}
li.kv .v{flex:1;min-width:0}
ul.kv-list{padding-left:0}

/* 引文：全站最重的排版元素 */
blockquote{
  margin:1.3em 0;padding:.95rem 1.15rem;background:var(--quote);
  border-left:3px solid var(--accent);border-radius:0 10px 10px 0;
  font-family:var(--serif);font-size:1.04em;line-height:1.85;color:var(--ink)
}
blockquote p{margin:.35em 0;text-align:left}
blockquote a{color:var(--accent)}

/* 代码 */
code{font-family:var(--mono);font-size:.86em;background:var(--chip);padding:.12em .4em;border-radius:5px;
  overflow-wrap:break-word;word-break:break-word}
pre.code{margin:1.3em 0;padding:1rem 1.1rem;background:var(--bg-elev);border:1px solid var(--line);
  border-radius:10px;overflow-x:auto;font-size:.82rem;line-height:1.65}
pre.code code{background:none;padding:0;white-space:pre}

/* 表格 */
.table-wrap{margin:1.3em 0;border:1px solid var(--line);border-radius:10px;background:var(--bg-elev);
  overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:.875rem;line-height:1.7}
.table-wrap.wide table{min-width:680px}
.table-cards{display:none;list-style:none;padding:0;margin:1.3em 0}
.table-cards li{border:1px solid var(--line);border-radius:10px;padding:.7rem .85rem;margin:.6rem 0;background:var(--bg-elev)}
.table-cards .tc-row{display:flex;gap:.7rem;padding:.2rem 0;border-bottom:1px dashed var(--line)}
.table-cards .tc-row:last-child{border-bottom:0}
.table-cards .tc-k{flex:0 0 3.2em;font-size:.72rem;color:var(--accent);font-weight:600;letter-spacing:.04em;padding-top:.15em}
.table-cards .tc-v{flex:1;min-width:0;font-size:.86rem;line-height:1.7}
@media (max-width:700px){
  .table-wrap.wide{display:none}
  .table-cards{display:block}
  .wide-block.index-block{display:none}
}
th,td{padding:.6rem .75rem;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
th{background:var(--chip);font-weight:600;white-space:nowrap;position:sticky;top:0;z-index:1}
tbody tr:last-child td{border-bottom:0}
td code{white-space:nowrap}
.num{font-family:var(--mono);font-size:.85rem;font-variant-numeric:tabular-nums}

/* ---------- 侧栏目录 ---------- */
.toc{position:sticky;top:76px;max-height:calc(100vh - 100px);overflow:auto;
  font-size:.82rem;line-height:1.7;border-left:1px solid var(--line);padding-left:1rem}
.toc-h{margin:0 0 .5rem;font-size:.72rem;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.toc ul{list-style:none;padding:0;margin:0}
.toc li{margin:.3em 0}
.toc .l3{padding-left:.75rem;font-size:.79rem;opacity:.9}
.toc a{display:block;color:var(--muted);border:0;padding:.12rem 0;line-height:1.5;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.toc a:hover{color:var(--accent)}

/* ---------- 首页 ---------- */
.hero{padding:clamp(1rem,3vw,2.5rem) 0 2rem;border-bottom:1px solid var(--line);margin-bottom:2.5rem}
.kicker{font-size:.74rem;letter-spacing:.3em;color:var(--accent);margin:0 0 .9rem;text-transform:uppercase}
.hero h1{font-family:var(--serif);font-size:clamp(1.5rem,1.1rem + 2.2vw,2.4rem);line-height:1.55;margin:0 0 1rem;letter-spacing:0}
.lede{font-size:1.02rem;color:var(--ink-2);max-width:34em;margin:1rem 0}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:1rem 1.25rem;
  margin:1.9rem 0;padding:1.1rem 1.2rem;border:1px solid var(--line);border-radius:12px;background:var(--bg-elev)}
.stats div{min-width:0}
.stats b{display:block;font-family:var(--serif);font-size:1.55rem;line-height:1.2;color:var(--accent);
  font-variant-numeric:tabular-nums}
.stats span{display:block;font-size:.75rem;color:var(--muted);margin-top:.15rem}
.hero-links{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.6rem}
.btn{display:inline-flex;align-items:center;min-height:42px;padding:.55rem 1rem;border-radius:999px;
  background:var(--accent);color:#fff;font-size:.88rem;border:1px solid var(--accent)}
.btn:hover{text-decoration:none;filter:brightness(1.05)}
.btn.ghost{background:transparent;color:var(--accent)}
@media (prefers-color-scheme:dark){.btn{color:#1a1512}}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,215px),1fr));gap:.75rem;margin:1.2rem 0}
.card{display:flex;flex-direction:column;gap:.2rem;padding:.9rem 1rem;border:1px solid var(--line);
  border-radius:12px;background:var(--bg-elev);transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--line-2);text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow)}
.card-no{font-family:var(--mono);font-size:.7rem;color:var(--accent)}
.card-name{font-size:1.08rem;font-weight:650;color:var(--ink)}
.card-work{font-size:.85rem;color:var(--muted)}
.card-tags{font-size:.74rem;color:var(--muted)}

/* ---------- 实体页 / 徽章 ---------- */
.entity{padding-bottom:1.1rem;margin-bottom:1.8rem;border-bottom:1px solid var(--line)}
.entity h1{margin-bottom:.45rem}
.latin{font-size:.55em;color:var(--muted);font-family:var(--sans);font-weight:400;letter-spacing:.02em}
.chips{display:flex;flex-wrap:wrap;gap:.4rem;margin:.5rem 0 0}
.chip{display:inline-flex;align-items:center;gap:.25rem;font-size:.74rem;line-height:1.6;
  padding:.12rem .6rem;border-radius:999px;border:1px solid var(--line-2);color:var(--muted);background:var(--bg-elev)}
a.chip:hover{text-decoration:none;border-color:var(--accent);color:var(--accent)}
.chip.st-done{color:#22603c;border-color:#a8cbb5;background:#e9f4ee}
.chip.st-planned,.chip.st-seed{color:#7a5c14;border-color:#ddc894;background:#fbf2da}
.chip.st-drafting,.chip.st-verifying,.chip.st-review{color:#1f4a75;border-color:#a9c4de;background:#e9f1f9}
@media (prefers-color-scheme:dark){
  .chip.st-done{color:#a5e0bf;border-color:#2c5c40;background:#16241c}
  .chip.st-planned,.chip.st-seed{color:#e8cb81;border-color:#5e4b1c;background:#231e11}
  .chip.st-drafting,.chip.st-verifying,.chip.st-review{color:#a8cdf1;border-color:#2b4a68;background:#141d27}
}
h3.ex-h{display:flex;flex-wrap:wrap;align-items:baseline;gap:.45rem}
h3.ex-h .badge{margin-right:0}
.qid{font-family:var(--mono);font-size:.72em;color:var(--muted);white-space:nowrap;letter-spacing:.01em;background:none;padding:0}
.qtitle{font-weight:650;flex:1 1 12em;min-width:0}
.badge{display:inline-block;font-size:.64rem;line-height:1.8;vertical-align:.15em;margin-right:.5rem;
  padding:0 .45rem;border-radius:5px;letter-spacing:.06em;font-weight:600}
.b-q{background:var(--accent);color:#fff}
.b-r{background:transparent;color:var(--muted);border:1px solid var(--line-2)}

.work-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,200px),1fr));gap:.7rem;margin:1rem 0 1.8rem}
.sec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.6rem;margin:1rem 0 1.8rem}
.work-card,.sec-card{display:flex;flex-direction:column;gap:.15rem;padding:.8rem .9rem;border:1px solid var(--line);
  border-radius:10px;background:var(--bg-elev)}
.work-card:hover,.sec-card:hover{border-color:var(--line-2);text-decoration:none;box-shadow:var(--shadow)}
.work-title{font-size:1.02rem;font-weight:650;color:var(--ink)}
.work-meta{font-size:.76rem;color:var(--muted)}
.sec-card b{font-size:.95rem;font-weight:600;color:var(--ink)}
.sec-card i{font-family:var(--mono);font-style:normal;font-size:.7rem;color:var(--accent)}
.sec-card em{font-family:var(--mono);font-style:normal;font-size:.68rem;color:var(--muted)}

.sec-nav{display:flex;flex-wrap:wrap;gap:.35rem;margin:0 0 1.6rem;padding-bottom:1rem;border-bottom:1px solid var(--line)}
.sec-chip{display:inline-flex;align-items:center;min-height:36px;padding:.2rem .7rem;border:1px solid var(--line-2);
  border-radius:999px;font-size:.82rem;color:var(--muted);background:var(--bg-elev)}
.sec-chip:hover{text-decoration:none;border-color:var(--accent);color:var(--accent)}
.sec-chip.on{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
@media (prefers-color-scheme:dark){.sec-chip.on{color:#1a1512}}

.excerpt-meter{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;font-size:.78rem;color:var(--muted);margin-top:.6rem}
.bar{display:inline-block;width:clamp(90px,22vw,140px);height:6px;border-radius:999px;
  background:linear-gradient(90deg,var(--accent) var(--p),var(--line) var(--p))}
.bar-cell{display:flex;align-items:center;gap:.6rem}

/* 摘录：左侧清单 + 右侧正文 */
.xlayout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:clamp(1.2rem,3vw,2.8rem);align-items:start}
.xlist{position:sticky;top:76px;max-height:calc(100vh - 96px);overflow:auto;padding-right:.55rem;border-right:1px solid var(--line)}
.xnav-h{margin:0 0 .8rem;font-size:.7rem;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.xg{margin:0 0 1.1rem}
.xg-h{margin:0 0 .35rem;font-size:.74rem;color:var(--ink-2);font-weight:600;display:flex;gap:.4rem;align-items:baseline}
.xg-h b{font-family:var(--mono);font-size:.68rem;color:var(--muted);font-weight:400}
.xnav ul{list-style:none;margin:0;padding:0}
.xnav li a{display:grid;grid-template-columns:2.1em minmax(0,1fr);gap:.35rem;padding:.32rem .45rem;
  border-radius:7px;color:var(--ink-2);font-size:.83rem;line-height:1.5}
.xnav li a:hover{background:var(--chip);text-decoration:none}
.xnav li.on a{background:var(--accent-soft);color:var(--accent);font-weight:600}
.xn{font-family:var(--mono);font-size:.7rem;color:var(--muted);padding-top:.15em;font-variant-numeric:tabular-nums}
.xnav li.on .xn{color:var(--accent)}
.xt{overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.xmain{min-width:0}
.xpos{margin:0 0 .5rem;font-size:.75rem;letter-spacing:.06em;color:var(--muted)}
.xid{margin:.2rem 0 1.3rem;display:flex;align-items:center;gap:.2rem}
.xentry h1{margin:.1rem 0 .5rem;font-size:clamp(1.3rem,1.05rem + 1vw,1.75rem);line-height:1.5}
.xback{margin-top:1.6rem;font-size:.85rem}
.xmobile{display:none}

/* 上一页 / 下一页 */
.pager{display:flex;justify-content:space-between;gap:1rem;margin:3rem 0 0;padding-top:1.2rem;border-top:1px solid var(--line);
  font-size:.85rem}
.pager a{display:inline-flex;flex-direction:column;gap:.15rem;padding:.5rem .2rem;min-height:44px}
.pager .next{text-align:right;margin-left:auto}
.pager .lbl{font-size:.7rem;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}

.muted{color:var(--muted)}
.unpub{border-bottom:1px dotted var(--muted);color:var(--muted);cursor:help}

/* ---------- 页脚 ---------- */
.foot{border-top:1px solid var(--line);margin-top:2rem;padding:2rem clamp(.9rem,3vw,2.5rem) 3rem;
  font-size:.8rem;color:var(--muted);line-height:1.9}
.foot p{margin:.35rem 0}
.foot code{font-size:.9em}

/* ---------- 窄屏 ---------- */
@media (max-width:900px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .toc{display:none}
  h2{margin-top:2.2em}
  .xlayout{grid-template-columns:minmax(0,1fr)}
  .xlist{display:none}
  .xmobile{display:block;margin:0 0 1.4rem;border:1px solid var(--line);border-radius:10px;
    background:var(--bg-elev);padding:.35rem .85rem}
  .xmobile summary{cursor:pointer;font-size:.87rem;font-weight:600;padding:.35rem 0;list-style:none}
  .xmobile summary::-webkit-details-marker{display:none}
  .xmobile summary::before{content:"▸ ";color:var(--accent)}
  .xmobile[open] summary::before{content:"▾ "}
  .xmobile .xnav{position:static;max-height:none;border:0;padding:.5rem 0 .3rem}
  .xnav li a{padding:.5rem .45rem}
}
@media (max-width:600px){
  :root{--lh:1.85}
  .wrap{padding-top:1rem;padding-bottom:3rem}
  .top{gap:.6rem;padding:.5rem .9rem}
  .brand{font-size:1rem}
  .nav a{padding:.5rem .5rem;font-size:.86rem}
  .nav{margin-left:0;flex:1;justify-content:flex-start;
    -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent)}
  .stats{grid-template-columns:repeat(2,1fr);gap:.9rem}
  .hero h1{font-size:1.42rem;line-height:1.6}
  .cards,.work-grid{grid-template-columns:1fr}
  .sec-grid{grid-template-columns:repeat(2,1fr);gap:.5rem}
  .sec-card{flex-direction:row;align-items:baseline;gap:.45rem;padding:.6rem .7rem}
  .sec-card b{font-size:.92rem}
  .sec-card em{font-size:.7rem;color:var(--muted);font-style:normal;margin-left:auto}
  blockquote{padding:.8rem .9rem;font-size:1.02em}
  li.kv{gap:.5rem;margin:.55em 0}
  li.kv .k{flex:0 0 auto;min-width:3.8em;font-size:.72rem;padding-top:.25em;white-space:nowrap}
  th,td{padding:.55rem .6rem}
  table{font-size:.83rem}
  .pager{flex-direction:column;gap:.4rem}
  .pager .next{text-align:left}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{
  .top,.toc,.pager,.foot,.hero-links{display:none}
  body{background:#fff;color:#000;font-size:11pt}
  a{color:#000;text-decoration:underline}
  .wrap{max-width:none;padding:0}
  h2{border-left:0;padding-left:0;border-bottom:1px solid #999}
}