:root{
  --paper:#f7f3ea; --paper2:#fbf8f1; --ink:#23201a; --ink-soft:#6a6354;
  --seal:#9e2b25; --line:#e4dccc; --gold:#9a7b3f;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"Songti SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  line-height:1.9;font-size:18px;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
main{max-width:760px;margin:0 auto;padding:0 24px 80px;}

/* 顶栏 */
header.site{max-width:760px;margin:0 auto;padding:30px 24px 22px;display:flex;align-items:center;justify-content:space-between;}
.brand{display:flex;align-items:center;gap:12px;}
.brand .seal{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  background:var(--seal);color:#fff;border-radius:6px;font-size:20px;font-weight:700;
  font-family:"Songti SC",serif;transform:rotate(-3deg);box-shadow:0 2px 6px rgba(158,43,37,.25);}
.brand .name{font-size:22px;font-weight:700;letter-spacing:3px;}
header.site nav{display:flex;gap:22px;font-family:"PingFang SC",sans-serif;font-size:15.5px;color:var(--ink-soft);}
header.site nav a{padding-bottom:3px;border-bottom:1.5px solid transparent;transition:.2s;}
header.site nav a:hover{color:var(--seal);border-color:var(--seal);}

/* 首页 hero */
.hero{text-align:center;padding:50px 0 26px;border-bottom:1px solid var(--line);margin-bottom:14px;}
.hero-seal{display:inline-flex;align-items:center;justify-content:center;width:84px;height:84px;
  background:var(--seal);color:#fff;border-radius:12px;font-size:52px;font-weight:700;
  transform:rotate(-4deg);box-shadow:0 6px 22px rgba(158,43,37,.28);margin-bottom:20px;}
.hero-title{font-size:46px;letter-spacing:10px;margin:6px 0 4px;font-weight:700;}
.hero-tag{font-family:"PingFang SC",sans-serif;color:var(--ink-soft);letter-spacing:6px;font-size:15px;margin:0;}

/* 区块标题 */
.sechead{display:flex;align-items:baseline;justify-content:space-between;
  border-bottom:1px solid var(--line);padding-bottom:8px;margin:42px 0 22px;}
.sechead h2{font-size:17px;letter-spacing:4px;margin:0;font-family:"PingFang SC",sans-serif;color:var(--ink-soft);font-weight:600;}
.sechead .more{font-family:"PingFang SC",sans-serif;font-size:13.5px;color:var(--seal);}

/* 随笔列表 */
.list{list-style:none;padding:0;margin:0;}
.item{padding:22px 0;border-bottom:1px dashed var(--line);}
.item:last-child{border-bottom:none;}
.item .t{font-size:23px;font-weight:700;line-height:1.4;}
.item .t:hover{color:var(--seal);}
.item .d{font-family:"PingFang SC",sans-serif;font-size:13px;color:var(--ink-soft);margin:6px 0 8px;letter-spacing:1px;}
.item .x{margin:0;color:var(--ink-soft);font-size:16px;line-height:1.8;}

/* 文章页 */
.essay{padding-top:18px;}
.essay-title{font-size:34px;line-height:1.45;letter-spacing:1px;margin:0 0 10px;}
.essay-date{font-family:"PingFang SC",sans-serif;font-size:13.5px;color:var(--ink-soft);letter-spacing:1px;margin-bottom:30px;}
.essay-body{font-size:18.5px;line-height:2.0;}
.essay-body p{margin:0 0 1.3em;text-align:justify;}
.essay-body h2{font-size:23px;margin:1.8em 0 .7em;letter-spacing:1px;}
.essay-body h3{font-size:20px;margin:1.5em 0 .6em;}
.essay-body img{max-width:100%;height:auto;border-radius:8px;margin:1em 0;}
.essay-body blockquote{margin:1.4em 0;padding:4px 20px;border-left:3px solid var(--seal);color:var(--ink-soft);background:var(--paper2);}
.essay-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0;}
.essay-body a{color:var(--seal);border-bottom:1px solid rgba(158,43,37,.3);}
.backline{margin-top:48px;font-family:"PingFang SC",sans-serif;font-size:14.5px;}
.backline a{color:var(--seal);}

/* 照片网格 */
.page-title{font-size:30px;letter-spacing:4px;margin:14px 0 26px;}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.grid.small{grid-template-columns:repeat(3,1fr);gap:12px;}
@media(max-width:620px){.grid,.grid.small{grid-template-columns:repeat(2,1fr);}}
.cell{position:relative;display:block;overflow:hidden;border-radius:8px;background:var(--paper2);box-shadow:0 2px 10px rgba(35,32,26,.08);}
.cell img{width:100%;height:100%;aspect-ratio:1/1;object-fit:cover;display:block;transition:transform .5s ease;}
.cell:hover img{transform:scale(1.05);}
.cell .cap{position:absolute;left:0;right:0;bottom:0;padding:8px 10px;font-family:"PingFang SC",sans-serif;
  font-size:12.5px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.6));opacity:0;transition:.3s;}
.cell:hover .cap{opacity:1;}

.empty{color:var(--ink-soft);font-family:"PingFang SC",sans-serif;font-size:15px;background:var(--paper2);
  border:1px dashed var(--line);border-radius:10px;padding:20px;}
.empty code{background:#efe8d8;padding:2px 7px;border-radius:5px;font-size:13.5px;}

/* 页脚 */
.foot{text-align:center;color:var(--ink-soft);font-family:"PingFang SC",sans-serif;font-size:13px;
  letter-spacing:2px;padding:40px 0 50px;border-top:1px solid var(--line);max-width:760px;margin:30px auto 0;}