/* ============================================================
   松间集 · 风格一：新中式水墨雅致
   宣纸底 / 宋体字 / 朱砂印 / 水墨痕 / 竖排题
   ============================================================ */

:root{
  --paper:        #f6f1e6;   /* 宣纸 */
  --paper-deep:   #efe7d3;   /* 深一档的纸色，用于卡片 */
  --ink:          #2b2a23;   /* 墨 */
  --ink-soft:     #6f695b;   /* 淡墨 */
  --cinnabar:     #a03a2a;   /* 朱砂 */
  --pine:         #46583f;   /* 松绿 */
  --hairline:     #d8cfb8;   /* 纸纤维线 */
  --serif: "Songti SC","STSong","Noto Serif SC","SimSun",serif;
  --kai:   "Kaiti SC","KaiTi","STKaiti",cursive;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--serif);
  font-size:16px;
  line-height:1.95;
  /* 极淡的纸纹（横向纤维） */
  background-image:repeating-linear-gradient(0deg, rgba(122,104,66,.028) 0 1px, transparent 1px 30px);
}
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
.wrap{ max-width:1060px; margin:0 auto; padding:0 30px; }

/* ---------- 页头：居中报名 + 双线 + 括线导航 ---------- */
.site-header{ padding:38px 0 0; text-align:center; }
.brand-name{
  display:inline-block;
  font-size:46px;
  font-weight:700;
  letter-spacing:.38em;
  text-indent:.38em;
  color:var(--ink);
}
.brand-sub{
  display:block;
  margin-top:6px;
  font-family:var(--kai);
  font-size:14px;
  letter-spacing:.32em;
  text-indent:.32em;
  color:var(--ink-soft);
}
.header-rule{
  margin:22px auto 0;
  max-width:520px;
  border-top:1px solid var(--ink);
  border-bottom:3px double var(--ink);
  height:4px;
}
.site-nav{
  margin:16px auto 0;
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:6px 26px;
  font-size:16px;
}
.site-nav a{
  padding:2px 4px;
  color:var(--ink-soft);
  transition:color .25s;
}
.site-nav a:hover{ color:var(--cinnabar); }
.site-nav a.active{ color:var(--cinnabar); font-weight:700; }
.nav-toggle{ display:none; }

/* ---------- 朱砂印章 ---------- */
.seal{
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  width:46px;
  padding:7px 0;
  background:var(--cinnabar);
  color:var(--paper);
  font-size:17px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:2px;
  border-radius:4px;
  box-shadow:0 1px 0 rgba(0,0,0,.15);
  transform:rotate(-2deg);
}

/* ---------- 水墨笔触分隔线 ---------- */
.ink-divider{ display:block; margin:36px auto; width:min(320px,70%); color:var(--ink); }
.ink-divider path{ fill:currentColor; opacity:.42; }

/* ---------- 首页 · 题字区 ---------- */
.hero{
  padding:74px 0 30px;
  display:flex;
  justify-content:center;
  align-items:flex-start;
  gap:44px;
}
.hero-vertical{
  writing-mode:vertical-rl;
  font-size:40px;
  font-weight:700;
  letter-spacing:.5em;
  line-height:1.6;
  border-left:1px solid var(--hairline);
  border-right:1px solid var(--hairline);
  padding:8px 12px;
}
.hero-body{ max-width:520px; padding-top:6px; }
.hero-body p{ font-family:var(--kai); font-size:18px; color:var(--ink); }
.hero-body .hero-en{ margin-top:14px; font-size:12.5px; letter-spacing:.28em; color:var(--ink-soft); }
.hero-actions{ margin-top:26px; display:flex; gap:18px; }
.btn{
  display:inline-block;
  padding:8px 26px;
  border:1px solid var(--ink);
  font-size:15px;
  letter-spacing:.2em;
  text-indent:.2em;
  transition:all .25s;
}
.btn:hover{ background:var(--ink); color:var(--paper); }
.btn-solid{ background:var(--cinnabar); border-color:var(--cinnabar); color:var(--paper); }
.btn-solid:hover{ background:#8a2f21; border-color:#8a2f21; }

/* ---------- 栏目四格 ---------- */
.section{ padding:44px 0 10px; }
.section-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  margin-bottom:26px;
}
.section-title{ font-size:24px; font-weight:700; letter-spacing:.18em; }
.section-title::before{ content:"「"; color:var(--cinnabar); }
.section-title::after{ content:"」"; color:var(--cinnabar); }
.section-more{ font-family:var(--kai); font-size:14px; color:var(--ink-soft); }
.section-more:hover{ color:var(--cinnabar); }

.col-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.col-card{
  position:relative;
  background:var(--paper-deep);
  border:1px solid var(--hairline);
  padding:26px 20px 22px;
  text-align:center;
  transition:transform .25s, border-color .25s, box-shadow .25s;
}
.col-card::after{ /* 内细线，双线框的仪式感 */
  content:"";
  position:absolute; inset:4px;
  border:1px solid rgba(160,58,42,.16);
  pointer-events:none;
}
.col-card:hover{ transform:translateY(-4px); border-color:var(--cinnabar); box-shadow:0 10px 22px rgba(60,48,20,.08); }
.col-icon{ font-size:30px; line-height:1; color:var(--cinnabar); }
.col-card h3{ margin-top:14px; font-size:19px; letter-spacing:.12em; }
.col-card p{ margin-top:8px; font-size:13.5px; color:var(--ink-soft); line-height:1.8; }
.col-card .col-count{ display:block; margin-top:12px; font-family:var(--kai); font-size:12.5px; color:var(--pine); }
.col-card.soon{ opacity:.62; }
.col-card.soon .col-soon{
  position:absolute; top:10px; right:10px;
  font-size:11px; color:var(--paper); background:var(--ink-soft);
  padding:1px 8px; letter-spacing:.1em;
}

/* ---------- 最新手记列表 ---------- */
.post-list{ list-style:none; }
.post-list li{
  display:flex;
  align-items:baseline;
  gap:22px;
  padding:17px 4px;
  border-bottom:1px solid var(--hairline);
}
.post-list li:first-child{ border-top:1px solid var(--hairline); }
.post-date{ flex:none; width:92px; font-family:var(--kai); font-size:13.5px; color:var(--ink-soft); }
.post-tag{
  flex:none;
  font-size:12px;
  color:var(--pine);
  border:1px solid rgba(70,88,63,.4);
  padding:0 8px;
  line-height:20px;
  border-radius:2px;
}
.post-list .p-title{ flex:1; font-size:18px; transition:color .2s, transform .2s; }
.post-list li:hover .p-title{ color:var(--cinnabar); transform:translateX(4px); }
.post-list .p-read{ flex:none; font-family:var(--kai); font-size:13px; color:var(--ink-soft); }

/* ---------- 栏目页 ---------- */
.page-head{ padding:58px 0 10px; text-align:center; }
.page-kicker{ font-family:var(--kai); font-size:14px; letter-spacing:.4em; color:var(--cinnabar); }
.page-title{ margin-top:10px; font-size:34px; font-weight:700; letter-spacing:.14em; }
.page-desc{ margin:14px auto 0; max-width:560px; font-family:var(--kai); font-size:16px; color:var(--ink-soft); }

.filter-bar{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:10px 24px;
  margin:26px 0 8px;
  font-size:15px;
}
.filter-bar a{ color:var(--ink-soft); padding:2px 6px; border-bottom:1px solid transparent; }
.filter-bar a:hover{ color:var(--cinnabar); }
.filter-bar a.on{ color:var(--cinnabar); border-bottom-color:var(--cinnabar); }

.book-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; padding:14px 0 20px; }
.book-card{
  display:flex;
  gap:16px;
  background:var(--paper-deep);
  border:1px solid var(--hairline);
  padding:18px;
  transition:transform .25s, border-color .25s, box-shadow .25s;
}
.book-card:hover{ transform:translateY(-4px); border-color:var(--cinnabar); box-shadow:0 10px 22px rgba(60,48,20,.08); }
.book-cover{
  flex:none;
  width:86px; height:118px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  color:var(--paper);
  font-size:15px;
  line-height:1.35;
  text-align:center;
  padding:8px;
  border-radius:2px 4px 4px 2px;
  border-left:4px solid rgba(0,0,0,.22);
  box-shadow:2px 2px 8px rgba(60,48,20,.18);
}
.book-cover .cov-en{ font-size:10px; opacity:.75; letter-spacing:.08em; }
.book-info h3{ font-size:17.5px; letter-spacing:.04em; }
.book-info .author{ font-size:13px; color:var(--ink-soft); margin-top:2px; }
.book-stars{ margin-top:8px; color:var(--cinnabar); font-size:13px; letter-spacing:3px; }
.book-stars .off{ color:var(--hairline); }
.book-info .note{ margin-top:8px; font-size:13.5px; color:var(--ink); line-height:1.75; }
.book-info .note-link{ display:inline-block; margin-top:8px; font-family:var(--kai); font-size:13px; color:var(--pine); }
.book-info .note-link:hover{ color:var(--cinnabar); }

/* ---------- 文章详情页 ---------- */
.post{ max-width:760px; margin:0 auto; padding:56px 30px 40px; }
.post-head{ text-align:center; }
.post-kicker{ font-family:var(--kai); font-size:14px; letter-spacing:.5em; color:var(--cinnabar); }
.post-head h1{ margin-top:12px; font-size:32px; font-weight:700; line-height:1.5; letter-spacing:.04em; }
.post-sub{ margin-top:10px; font-family:var(--kai); font-size:17px; color:var(--ink-soft); }
.post-meta{
  margin-top:18px;
  display:flex;
  justify-content:center;
  gap:8px 26px;
  flex-wrap:wrap;
  font-family:var(--kai);
  font-size:13.5px;
  color:var(--ink-soft);
}
.post-body{ padding-top:8px; }
.post-body p{ margin:22px 0; text-align:justify; }
.post-body h2{
  margin:44px 0 16px;
  font-size:21px;
  font-weight:700;
  letter-spacing:.1em;
  padding-left:14px;
  border-left:4px solid var(--cinnabar);
}
.post-body ul{ margin:20px 0 20px 1.6em; }
.post-body li{ margin:8px 0; }
.post-body li::marker{ color:var(--cinnabar); }
.drop-cap::first-letter{
  float:left;
  font-size:52px;
  line-height:1;
  padding:6px 12px 0 0;
  color:var(--cinnabar);
  font-weight:700;
}
.pull-quote{
  margin:34px 0;
  padding:6px 26px;
  border-left:3px double var(--cinnabar);
  font-family:var(--kai);
  font-size:19px;
  color:var(--ink);
  line-height:2;
}
.pull-quote::before{ content:"「"; color:var(--cinnabar); }
.pull-quote::after{ content:"」"; color:var(--cinnabar); }
.post-end{
  margin-top:46px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:16px;
  font-family:var(--kai);
  color:var(--ink-soft);
  font-size:15px;
}
.post-nav{
  margin-top:40px;
  display:grid;
  grid-template-columns:1fr 1fr;
  border-top:1px solid var(--hairline);
  border-bottom:1px solid var(--hairline);
}
.post-nav a{ padding:20px 6px; font-size:15px; }
.post-nav a small{ display:block; font-family:var(--kai); font-size:12.5px; color:var(--ink-soft); margin-bottom:4px; }
.post-nav a:hover{ color:var(--cinnabar); }
.post-nav .next{ text-align:right; }

.related{ max-width:760px; margin:0 auto; padding:0 30px 60px; }
.related h3{ font-size:18px; letter-spacing:.16em; margin-bottom:14px; }
.related ul{ list-style:none; }
.related li{ padding:10px 0; border-bottom:1px dashed var(--hairline); font-size:15.5px; }
.related li span{ font-family:var(--kai); font-size:13px; color:var(--ink-soft); margin-right:14px; }
.related li:hover{ color:var(--cinnabar); }

/* ---------- 日记页 · 时间线 ---------- */
.timeline{ max-width:760px; margin:34px auto 0; padding:0 30px 60px; }
.t-item{ position:relative; padding:0 0 40px 34px; border-left:1px solid var(--hairline); }
.t-item:last-child{ padding-bottom:6px; }
.t-item::before{
  content:"";
  position:absolute; left:-5px; top:8px;
  width:9px; height:9px;
  background:var(--paper);
  border:1.5px solid var(--cinnabar);
  transform:rotate(45deg);
}
.t-date{ font-family:var(--kai); font-size:14px; color:var(--ink-soft); letter-spacing:.06em; }
.t-date .solar{ color:var(--pine); margin-right:10px; }
.t-date .weather{ margin-left:10px; }
.t-item h3{ margin:6px 0 8px; font-size:19px; letter-spacing:.04em; }
.t-item p{ font-size:15px; color:var(--ink); line-height:1.9; }
.t-item .t-tags{ margin-top:10px; font-family:var(--kai); font-size:13px; color:var(--ink-soft); }

/* ---------- 关于页 ---------- */
.about{ max-width:820px; margin:0 auto; padding:52px 30px 70px; }
.about-top{ display:flex; gap:40px; align-items:flex-start; }
.avatar{
  flex:none;
  width:132px; height:132px;
  border-radius:50%;
  background:
    radial-gradient(circle at 32% 30%, rgba(255,255,255,.5), transparent 55%),
    linear-gradient(150deg, var(--pine), #2f3d2b);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--paper);
  font-size:34px;
  letter-spacing:.1em;
  border:1px solid var(--hairline);
  box-shadow:0 8px 20px rgba(60,48,20,.14);
}
.about-top h2{ font-size:26px; letter-spacing:.1em; }
.about-top .role{ margin-top:4px; font-family:var(--kai); color:var(--cinnabar); font-size:15px; }
.about-top p{ margin-top:14px; font-size:15.5px; }
.about-block{ margin-top:44px; }
.about-block h3{
  font-size:19px;
  letter-spacing:.16em;
  padding-bottom:8px;
  border-bottom:3px double var(--ink);
  margin-bottom:18px;
}
.chips{ display:flex; flex-wrap:wrap; gap:10px; }
.chip{
  font-size:14px;
  padding:3px 14px;
  border:1px solid var(--hairline);
  background:var(--paper-deep);
  color:var(--ink);
}
.chip:hover{ border-color:var(--cinnabar); color:var(--cinnabar); }
.about-list{ list-style:none; }
.about-list li{ display:flex; gap:20px; padding:11px 0; border-bottom:1px dashed var(--hairline); font-size:15px; }
.about-list .y{ flex:none; width:76px; font-family:var(--kai); color:var(--pine); }
.motto{
  margin-top:44px;
  text-align:center;
  font-family:var(--kai);
  font-size:19px;
  letter-spacing:.1em;
  color:var(--ink);
}
.motto::before{ content:"「"; color:var(--cinnabar); }
.motto::after{ content:"」"; color:var(--cinnabar); }

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:30px;
  border-top:3px double var(--ink);
  padding:30px 0 40px;
  text-align:center;
}
.site-footer .f-name{ font-size:20px; letter-spacing:.3em; text-indent:.3em; }
.site-footer .f-line{ margin-top:10px; font-family:var(--kai); font-size:13px; color:var(--ink-soft); letter-spacing:.12em; }
.site-footer .f-demo{ margin-top:8px; font-size:12px; color:var(--ink-soft); opacity:.8; }
.foot-seal{ margin:18px auto 0; }

/* ---------- 滚动淡入 ---------- */
.reveal{ opacity:0; transform:translateY(16px); transition:opacity .7s ease, transform .7s ease; }
.reveal.visible{ opacity:1; transform:none; }

/* ---------- 响应式 ---------- */
@media (max-width:860px){
  .col-grid{ grid-template-columns:repeat(2,1fr); }
  .book-grid{ grid-template-columns:1fr; }
  .hero{ flex-direction:column; align-items:center; gap:26px; padding-top:48px; }
  .hero-vertical{ writing-mode:horizontal-tb; border-left:none; border-right:none; border-top:1px solid var(--hairline); border-bottom:1px solid var(--hairline); font-size:32px; }
  .about-top{ flex-direction:column; align-items:center; text-align:center; }
  .post-list li{ flex-wrap:wrap; gap:6px 16px; }
  .post-date{ width:auto; }
}