:root{
  --ink:#16211d;        /* 墨 */
  --ink-soft:#3d4a44;
  --sub:#6d7770;
  --line:#dcd6c6;       /* 纸筋 */
  --bg:#f7f3e8;         /* 宣纸 */
  --bg-2:#efe8d7;
  --accent:#8c3b28;     /* 朱砂 */
  --jade:#2c5148;       /* 青瓷 */
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font:17px/1.9 "Songti SC","Source Han Serif SC","Noto Serif CJK SC",Georgia,serif;
  -webkit-font-smoothing:antialiased;
}
body::before{ /* 极淡的纸纹，不用图片 */
  content:""; position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:
    radial-gradient(circle at 22% 18%, rgba(140,59,40,.028), transparent 55%),
    radial-gradient(circle at 78% 82%, rgba(44,81,72,.030), transparent 55%);
}
.top{
  position:relative; z-index:1;
  display:flex; align-items:center; gap:30px; flex-wrap:wrap;
  max-width:760px; margin:0 auto; padding:40px 26px 16px;
}
.brand{display:flex; align-items:center; gap:11px; text-decoration:none; color:var(--ink)}
.mark{width:34px; height:34px; color:var(--accent); flex:none}
.brand>span{display:flex; flex-direction:column; line-height:1.15}
.brand{font-size:19px; letter-spacing:.14em; font-weight:600}
.brand .sub{
  font:11px/1.4 -apple-system,"PingFang SC",sans-serif;
  letter-spacing:.30em; color:var(--sub); margin-top:5px; font-weight:400;
}
nav{display:flex; gap:22px; margin-left:auto;
  font:15px/1 -apple-system,"PingFang SC",sans-serif}
nav a{color:var(--sub); text-decoration:none; padding:6px 0 5px; border-bottom:1px solid transparent;
  transition:color .18s,border-color .18s}
nav a:hover{color:var(--ink)}
nav a.on{color:var(--accent); border-bottom-color:var(--accent)}
main{position:relative; z-index:1; max-width:760px; margin:0 auto; padding:46px 26px 90px}
.hero h1{
  font-size:27px; line-height:1.8; font-weight:600; letter-spacing:.005em;
  margin:0 0 36px; padding-left:20px; border-left:3px solid var(--accent);
}
h1{font-size:26px; line-height:1.6; margin:0 0 26px; letter-spacing:.01em}
h2.sec{
  font:500 13px/1 -apple-system,"PingFang SC",sans-serif;
  letter-spacing:.28em; color:var(--sub); margin:50px 0 14px;
  padding-bottom:10px; border-bottom:1px solid var(--line);
}
ul.list{list-style:none; padding:0; margin:0}
ul.list li{padding:18px 0; border-bottom:1px solid var(--line)}
ul.list a{color:var(--ink); text-decoration:none; font-size:18px}
ul.list a:hover{color:var(--accent)}
ul.list .d{color:var(--sub); font-size:12.5px; margin-left:12px; letter-spacing:.04em;
  font-family:-apple-system,"PingFang SC",sans-serif}
ul.list p{color:var(--sub); font-size:15px; margin:7px 0 0; line-height:1.75}
li.empty{color:var(--sub); padding:18px 0}
article h1{margin-bottom:8px}
.meta{color:var(--sub); font:14px/1 -apple-system,"PingFang SC",sans-serif;
  margin:0 0 34px; letter-spacing:.05em}
article p{margin:0 0 1.25em; text-align:justify; text-justify:inter-ideograph}
article h2{font-size:21px; margin:40px 0 14px; letter-spacing:.02em}
article h3{font-size:18px; margin:30px 0 10px}
article blockquote{
  margin:26px 0; padding:4px 0 4px 20px; border-left:2px solid var(--jade);
  color:var(--ink-soft); background:linear-gradient(90deg,rgba(44,81,72,.05),transparent 60%);
}
article code{background:var(--bg-2); padding:2px 6px; border-radius:3px; font-size:.9em}
article img{max-width:100%}
article hr{border:0; border-top:1px solid var(--line); margin:40px 0}
footer{
  position:relative; z-index:1; max-width:760px; margin:0 auto; padding:26px 26px 70px;
  border-top:1px solid var(--line); color:var(--sub); font-size:12.5px;
  font-family:-apple-system,"PingFang SC",sans-serif; letter-spacing:.02em;
}
footer a{color:var(--sub)}
.disclaimer{margin:0 0 8px}
@media (max-width:620px){
  .top{padding:28px 20px 12px; gap:12px}
  nav{margin-left:0; width:100%; gap:18px; font-size:14px; overflow-x:auto}
  main{padding:34px 20px 70px}
  .hero h1{font-size:22px; padding-left:15px}
}

/* 最新一篇 */
.feature{
  margin:0 0 8px; padding:22px 24px; border:1px solid var(--line);
  border-left:3px solid var(--accent); background:rgba(255,255,255,.5);
}
.feature .eyebrow{
  font:500 12px/1 -apple-system,"PingFang SC",sans-serif;
  letter-spacing:.28em; color:var(--accent); margin:0 0 12px;
}
.feature h2{
  font-size:21px; line-height:1.65; margin:0 0 8px; font-weight:600;
}
.feature h2 a{color:var(--ink); text-decoration:none}
.feature h2 a:hover{color:var(--accent)}
.feature .d{
  color:var(--sub); font-size:12.5px; letter-spacing:.04em;
  font-family:-apple-system,"PingFang SC",sans-serif; margin:0 0 10px;
}
.feature p.sum{color:var(--sub); font-size:15px; line-height:1.75; margin:0 0 14px}
.feature .more{
  display:inline-block; font-size:14px; color:var(--accent); text-decoration:none;
  border-bottom:1px solid var(--accent); padding-bottom:2px;
}