/* ===========================================================
   拾遗馆 · site.css
   浅色纸感，宋体为主。三套页面：首页 / 故事 / 阅读（信件）
   =========================================================== */

:root{
  --paper:      #faf8f4;
  --paper-2:    #f4f0e8;
  --card:       #ffffff;
  --ink:        #1e1d1b;
  --ink-2:      #3a3833;
  --ink-3:      #55514a;
  --muted:      #8b8579;
  --line:       #e5e0d6;
  --line-2:     #d5cec0;
  --accent:     #8a6a45;
  --serif: "Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --sans:  "PingFang SC","Noto Sans SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--serif);
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky; top:0; z-index:20;
  background:rgba(250,248,244,.88);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{
  max-width:1120px; margin:0 auto; padding:0 32px;
  height:60px; display:flex; align-items:center; justify-content:space-between;
}
.brand{
  font-size:14px; letter-spacing:.34em; text-indent:.34em;
  color:var(--ink); white-space:nowrap;
}
.brand .sub{color:var(--muted); letter-spacing:.1em; margin-left:10px; font-size:11px;}
.nav{display:flex; gap:24px; font-family:var(--sans); font-size:12px; color:var(--muted);}
.nav a{transition:color .18s;}
.nav a:hover{color:var(--ink);}

.wrap{max-width:1120px; margin:0 auto; padding:0 32px;}

/* ---------- 封面 ---------- */
.hero{padding:104px 0 0;}
.hero h1{
  font-size:clamp(34px,6vw,56px); font-weight:400; letter-spacing:.3em;
  text-indent:.3em; line-height:1.4; color:var(--ink);
}
.hero-rule{width:46px; height:1px; background:var(--line-2); margin:30px 0 26px;}
.hero .tagline{
  font-size:15px; color:var(--ink-3); letter-spacing:.04em;
  max-width:32em; line-height:2;
}
.hero .tagline.dim{color:var(--muted); font-size:13.5px; margin-top:6px;}
.hero .count{
  margin-top:34px; font-family:var(--sans); font-size:11px;
  letter-spacing:.16em; color:var(--muted);
}

/* ---------- 故事摘要 ---------- */
.teaser{margin-top:64px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--paper-2);}
.teaser .wrap{padding-top:58px; padding-bottom:58px;}
.teaser-inner{max-width:640px; margin:0 auto; position:relative;}
.teaser-mark{display:none;}
.teaser p{
  font-size:15.5px; line-height:2.1; color:var(--ink-2);
  text-indent:2em; margin-bottom:8px; text-align:justify;
}
.more{
  display:inline-block; margin-top:22px;
  font-family:var(--sans); font-size:11.5px; letter-spacing:.16em;
  color:var(--accent); border-bottom:1px solid transparent; padding-bottom:2px;
  transition:border-color .18s;
}
.more:hover{border-bottom-color:#cbb89c;}

/* ---------- 首篇 ---------- */
.feature{
  display:grid; grid-template-columns:1fr auto; gap:36px;
  background:var(--card); border:1px solid var(--line);
  padding:48px 50px; margin-top:72px;
  transition:box-shadow .24s ease, border-color .24s ease, transform .24s ease;
}
.feature:hover{
  transform:translateY(-2px);
  border-color:var(--line-2);
  box-shadow:0 16px 44px -26px rgba(60,48,30,.4);
}
.feature .kicker{
  font-family:var(--sans); font-size:10px; letter-spacing:.24em;
  color:var(--accent); margin-bottom:18px;
}
.feature h2{
  font-size:clamp(26px,4vw,38px); font-weight:400;
  letter-spacing:.2em; text-indent:.2em; line-height:1.4;
}
.feature-sub{
  margin-top:14px; font-family:var(--sans); font-size:10.5px;
  letter-spacing:.14em; color:var(--muted);
}
.feature-sum{
  margin-top:22px; font-size:13.5px; line-height:2.05; color:var(--ink-3);
  max-width:36em; text-align:justify;
}
.feature-meta{
  margin-top:16px; font-family:var(--sans); font-size:10.5px;
  letter-spacing:.06em; color:var(--muted);
}
.feature-links{display:flex; gap:10px; margin-top:26px; flex-wrap:wrap;}
.dl{
  font-family:var(--sans); font-size:11px; letter-spacing:.06em;
  border:1px solid var(--line-2); background:#fff; color:var(--ink-2);
  padding:7px 15px; border-radius:2px; transition:background .18s, border-color .18s;
}
.dl:hover{background:var(--paper); border-color:#c3bbaa;}
.feature-side{
  border-left:1px solid var(--line); padding-left:34px;
  display:flex; align-items:center;
}
.feature-stamp{
  font-size:13px; letter-spacing:.34em; line-height:1.9;
  color:#bfae92; border:1px solid #e9e0d1; padding:16px 9px;
  text-align:center; text-indent:.34em;
}

/* ---------- 画廊 ---------- */
.gallery-head{
  margin:96px 0 24px; padding-bottom:15px;
  border-bottom:1px solid var(--line);
  display:flex; align-items:baseline; justify-content:space-between; gap:16px;
  flex-wrap:wrap;
}
.section-title{font-size:15px; font-weight:400; letter-spacing:.3em; text-indent:.3em;}
.section-note{font-family:var(--sans); font-size:10.5px; color:var(--muted); letter-spacing:.06em;}

.filters{display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin-bottom:30px;}
.chip{
  font-family:var(--sans); font-size:11.5px; letter-spacing:.06em;
  color:var(--muted); background:transparent; white-space:nowrap;
  border:1px solid var(--line); border-radius:2px;
  padding:7px 15px; cursor:pointer;
  transition:color .18s, border-color .18s, background .18s;
}
.chip:hover{color:var(--ink); border-color:var(--line-2);}
.chip.on{background:var(--ink); border-color:var(--ink); color:var(--paper);}
.chip-n{margin-left:8px; font-size:9.5px; opacity:.5; font-variant-numeric:tabular-nums;}
.fsep{width:1px; height:16px; background:var(--line); margin:0 5px;}

.masonry{columns:4; column-gap:18px;}
.tile{display:block; break-inside:avoid; margin-bottom:26px;}
.tile-img{
  position:relative; overflow:hidden;
  background:#efece5; border:1px solid var(--line);
}
.tile-img img{
  width:100%; height:100%; object-fit:cover; display:block;
  transition:transform .55s cubic-bezier(.2,.7,.3,1);
}
.tile:hover .tile-img img{transform:scale(1.035);}
.tile-img.noimg{
  display:flex; align-items:center; justify-content:center; padding:24px;
  background:linear-gradient(160deg,#f3efe7,#e9e4da);
}
.noimg-t{
  font-size:13px; color:var(--muted); text-align:center;
  letter-spacing:.06em; line-height:1.8;
}
.badge{
  position:absolute; left:8px; bottom:8px;
  font-family:var(--sans); font-size:9.5px; letter-spacing:.08em;
  padding:3px 7px; border-radius:2px;
  background:rgba(24,22,20,.6); color:#fff;
  -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
}
.badge.live{background:rgba(255,255,255,.9); color:#3a3833;}
.tile-cap{padding-top:10px;}
.tile-title{
  font-size:13.5px; line-height:1.72; color:var(--ink); letter-spacing:.02em;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.tile-meta{
  margin-top:4px; font-family:var(--sans); font-size:10px;
  color:var(--muted); letter-spacing:.04em;
}
.empty{text-align:center; color:var(--muted); font-size:13px; padding:70px 0;}

/* ---------- 页脚 ---------- */
.site-foot{margin-top:96px; border-top:1px solid var(--line); padding:38px 0 56px;}
.site-foot .wrap{
  display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap;
  font-family:var(--sans); font-size:11px; color:var(--muted); letter-spacing:.06em;
}

/* ===========================================================
   故事页
   =========================================================== */
.story{max-width:660px; margin:0 auto; padding:78px 32px 0;}
.story h1{
  font-size:clamp(24px,4vw,32px); font-weight:400;
  letter-spacing:.16em; line-height:1.6; margin-bottom:14px;
}
.story .lede{
  font-family:var(--sans); font-size:10.5px; letter-spacing:.18em;
  color:var(--muted); padding-bottom:26px; border-bottom:1px solid var(--line);
}
.story h2{
  font-family:var(--sans); font-size:10px; font-weight:400;
  letter-spacing:.3em; color:#968c7d; margin:46px 0 16px;
}
.story p{
  font-size:15.5px; line-height:2.1; color:var(--ink-2);
  text-indent:2em; margin-bottom:10px; text-align:justify;
}
.story p.flush{text-indent:0;}
.story blockquote{
  margin:26px 0; padding:2px 0 2px 18px; border-left:2px solid #ddd7cb;
  font-size:14px; line-height:2; color:var(--ink-3); text-indent:0;
}
.story .end{
  margin-top:52px; padding-top:22px; border-top:1px solid var(--line);
  font-family:var(--sans); font-size:11px; color:var(--muted);
  letter-spacing:.08em; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
}

/* ===========================================================
   作品详情页
   =========================================================== */
.work-head{max-width:760px; margin:64px auto 0; padding:0 28px; text-align:center;}
.work-kicker{
  font-family:var(--sans); font-size:10px; letter-spacing:.26em; color:var(--accent);
}
.work-title{
  font-size:clamp(23px,4vw,33px); font-weight:400; letter-spacing:.06em;
  line-height:1.55; margin-top:18px; word-break:break-word;
}
.work-date{
  margin-top:14px; font-family:var(--sans); font-size:11px;
  color:var(--muted); letter-spacing:.1em;
}
.work-tags{display:flex; gap:8px; justify-content:center; flex-wrap:wrap; margin-top:18px;}
.work-tags .tag{
  font-family:var(--sans); font-size:10px; letter-spacing:.06em;
  color:var(--muted); border:1px solid var(--line); padding:2px 8px; border-radius:2px;
}
.work-stats{
  display:flex; justify-content:center; gap:26px; flex-wrap:wrap;
  margin-top:26px; padding:15px 0;
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  font-family:var(--sans); font-size:10.5px; color:var(--muted); letter-spacing:.06em;
}
.work-stats b{
  font-family:var(--serif); font-weight:400; font-size:14px;
  color:var(--ink); margin-right:5px; letter-spacing:0;
}

.work-body{max-width:560px; margin:44px auto 0; padding:0 18px;}
.shot{position:relative; margin-bottom:18px; background:var(--card); border:1px solid var(--line);}
.shot img{width:100%; height:auto; display:block; cursor:zoom-in;}
.shot .live-tag{
  position:absolute; top:10px; left:10px;
  font-family:var(--sans); font-size:9px; letter-spacing:.1em;
  background:rgba(255,255,255,.92); color:#3a3833;
  padding:3px 7px; border-radius:2px; cursor:pointer;
  -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
}
.shot video{
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover; display:none;
}
.shot.playing img{visibility:hidden;}
.shot.playing video{display:block;}

.work-video{max-width:900px; margin:44px auto 0; padding:0 18px;}
.work-video video{
  width:100%; max-height:78vh; background:#0d0c0b; display:block;
  border:1px solid var(--line);
}

.work-nav{
  max-width:760px; margin:64px auto 0; padding:22px 28px 0;
  border-top:1px solid var(--line);
  display:flex; justify-content:space-between; gap:18px;
  font-family:var(--sans); font-size:12px; color:var(--muted);
}
.work-nav a{max-width:46%; transition:color .18s;}
.work-nav a:hover{color:var(--ink);}
.work-nav .dir{display:block; font-size:9.5px; letter-spacing:.18em; margin-bottom:4px; color:#b3ab9d;}
.work-nav .to-r{text-align:right; margin-left:auto;}
.work-src{
  text-align:center; margin:40px 0 0;
  font-family:var(--sans); font-size:11px; color:var(--muted); letter-spacing:.06em;
}
.work-src a{border-bottom:1px solid var(--line-2); padding-bottom:1px;}
.work-src a:hover{color:var(--ink);}

/* ---------- 灯箱 ---------- */
.lightbox{
  position:fixed; inset:0; z-index:60; background:rgba(18,17,15,.95);
  display:flex; align-items:center; justify-content:center;
}
.lightbox[hidden]{display:none;}
.lb-figure{max-width:94vw; max-height:92vh; display:flex; flex-direction:column; align-items:center;}
.lb-figure img{max-width:94vw; max-height:86vh; width:auto; height:auto; object-fit:contain;}
.lb-figure figcaption{
  margin-top:14px; font-family:var(--sans); font-size:11px;
  color:rgba(255,255,255,.6); letter-spacing:.1em;
}
.lb-close{
  position:absolute; top:18px; right:24px; background:none; border:0;
  font-size:30px; line-height:1; color:rgba(255,255,255,.75); cursor:pointer;
}
.lb-close:hover{color:#fff;}
.lb-nav{
  position:absolute; top:50%; transform:translateY(-50%);
  background:none; border:0; font-size:44px; line-height:1;
  color:rgba(255,255,255,.55); cursor:pointer; padding:16px 20px;
}
.lb-nav:hover{color:#fff;}
.lb-nav.prev{left:6px;}
.lb-nav.next{right:6px;}

/* ===========================================================
   阅读页（信件）
   =========================================================== */
.reader{background:var(--paper);}

.article{
  max-width:768px; margin:52px auto 0; background:#fff;
  border:1px solid var(--line); padding:64px 60px 72px;
}

.article header{text-align:center;}
.article .title{
  font-size:30px; font-weight:400; letter-spacing:.34em;
  text-indent:.34em; color:#171717; line-height:1.6;
}
.article .subtitle{
  margin-top:16px; font-family:var(--sans); font-size:10.5px;
  letter-spacing:.18em; color:#9a9a9a; text-indent:.18em;
}
.rule{margin:20px auto 0; width:92px; height:1px; background:#d8d3c9; position:relative;}
.rule::after{
  content:""; position:absolute; left:50%; top:-2.5px; width:6px; height:6px;
  background:#fff; border:1px solid #d8d3c9; transform:translateX(-50%) rotate(45deg);
}
.epigraph{
  margin:24px auto 26px; max-width:130mm; text-align:center;
  font-size:13.5px; line-height:1.95; color:#6f6f6f;
}

.sec{
  font-family:var(--sans); font-size:10px; letter-spacing:.3em;
  color:#a89f92; text-align:center; margin:30px 0 18px; text-indent:.3em;
}
.sec:first-of-type{margin-top:4px;}

.article p{
  font-size:15px; line-height:1.96; text-align:justify;
  text-indent:2em; margin-bottom:8px; color:#20201e;
}
.article p.flush{text-indent:0;}

.sep{width:36px; height:1px; background:#ded8cc; margin:26px auto;}

.sign{text-align:right; margin-top:34px; font-size:15px; color:#3a3a38; letter-spacing:.08em;}

.h1{
  font-size:22px; letter-spacing:.42em; text-indent:.42em;
  text-align:center; color:#171717; margin:0 0 14px;
}
.rule.sm{width:64px; margin:0 auto 30px;}

.q{
  font-size:13px; line-height:1.92; color:#3a3a38; text-align:justify;
  border-left:2px solid #ddd7cb; padding-left:14px; margin:0 0 14px 4px;
}
.src{
  font-family:var(--sans); font-size:9px; letter-spacing:.1em;
  color:#aaa; text-align:right; margin:6px 2px 22px 0;
}

.note{
  font-family:var(--sans); font-size:9px; line-height:1.85; color:#a5a5a5;
  margin-top:26px; padding-top:12px; border-top:1px solid #ece8e0;
  text-align:justify;
}

.toolbar{
  max-width:768px; margin:0 auto; padding:26px 4px 0;
  display:flex; align-items:center; justify-content:space-between; gap:14px;
  flex-wrap:wrap; font-family:var(--sans); font-size:12px; color:var(--muted);
}
.toolbar .links{display:flex; gap:18px; flex-wrap:wrap;}
.toolbar a{border-bottom:1px solid transparent; padding-bottom:1px;}
.toolbar a:hover{color:var(--ink); border-bottom-color:var(--line-2);}
.btn{
  font-family:var(--sans); font-size:12px; color:var(--ink-2);
  border:1px solid var(--line-2); background:#fff; padding:7px 16px;
  cursor:pointer; border-radius:2px; transition:background .18s, border-color .18s;
}
.btn:hover{background:var(--paper); border-color:#c3bbaa;}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .masonry{columns:3;}
}
@media (max-width:860px){
  .masonry{columns:3; column-gap:14px;}
  .tile{margin-bottom:20px;}
  .feature{grid-template-columns:1fr; padding:36px 30px; gap:0;}
  .feature-side{display:none;}
  .teaser-mark{display:none;}
  .hero{padding-top:72px;}
}
@media (max-width:720px){
  .topbar-inner{padding:0 20px; height:54px;}
  .brand{letter-spacing:.22em; text-indent:.22em;}
  .brand span{display:none;}
  .nav{gap:16px; font-size:11.5px;}
  .wrap{padding:0 20px;}
  .hero{padding:60px 0 0;}
  .hero h1{letter-spacing:.22em; text-indent:.22em;}
  .teaser{margin-top:44px;}
  .teaser .wrap{padding-top:40px; padding-bottom:40px;}
  .teaser p{font-size:14.5px; line-height:2;}
  .feature{margin-top:44px; padding:28px 22px;}
  .gallery-head{margin-top:60px;}
  .masonry{columns:2; column-gap:12px;}
  .tile{margin-bottom:16px;}
  .tile-title{font-size:12.5px; line-height:1.6;}
  .tile-meta{font-size:9.5px;}
  .story{padding:48px 20px 0;}
  .story p{font-size:14.5px;}
  .article{margin:24px 12px 0; padding:40px 24px 48px;}
  .article .title{font-size:24px; letter-spacing:.24em; text-indent:.24em;}
  .article p{font-size:14.5px;}
  .q{font-size:12.5px;}
  .toolbar{padding:22px 16px 0;}
  .work-head{margin-top:40px; padding:0 20px;}
  .work-body{padding:0 12px;}
  .work-nav{padding:20px 20px 0;}
  .lb-nav{font-size:32px; padding:10px 8px;}
}

/* ---------- 打印（信件页） ---------- */
@media print{
  @page{size:A4; margin:24mm 26mm 20mm 26mm;}
  body{background:#fff;}
  .topbar,.toolbar,.site-foot,.btn,.nav{display:none !important;}
  .article{max-width:none; margin:0; border:0; padding:0; box-shadow:none;}
  .article header{margin-top:0;}
  .article p, .q, .sign, .src{page-break-inside:avoid;}
  .q{page-break-inside:auto;}
  .sec, .h1{page-break-after:avoid;}
  a{color:inherit;}
}

/* ===========================================================
   置顶两条
   =========================================================== */
.pinned{
  display:grid; grid-template-columns:1fr 1fr; gap:18px;
  margin-bottom:34px;
}
.pinned[hidden]{display:none;}
.pin{
  display:flex; flex-direction:column; justify-content:space-between; gap:20px;
  background:var(--card); border:1px solid var(--line);
  padding:28px 28px 22px; position:relative;
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.pin::before{
  content:""; position:absolute; left:0; top:0; width:100%; height:2px;
  background:linear-gradient(90deg,var(--accent),#cbb08a 60%,transparent);
  opacity:.55;
}
.pin:hover{
  transform:translateY(-2px); border-color:var(--line-2);
  box-shadow:0 14px 34px -22px rgba(60,48,30,.42);
}
.pin-kicker{
  font-family:var(--sans); font-size:9.5px; letter-spacing:.24em;
  color:var(--accent); margin-bottom:12px;
}
.pin-title{
  font-size:22px; font-weight:400; letter-spacing:.12em; line-height:1.5;
}
.pin-sub{
  margin-top:8px; font-family:var(--sans); font-size:10px;
  letter-spacing:.1em; color:var(--muted);
}
.pin-text{
  margin-top:14px; font-size:13px; line-height:1.95; color:var(--ink-3);
  text-wrap:pretty;
}
.pin-r{display:flex; justify-content:flex-end;}
.pin-cta{
  font-family:var(--sans); font-size:11px; letter-spacing:.1em;
  color:var(--accent); border-bottom:1px solid #dccdb6; padding-bottom:2px;
}
.pin:hover .pin-cta{border-bottom-color:var(--accent);}

/* ===========================================================
   悬浮返回
   =========================================================== */
.back-fab{
  position:fixed; left:26px; bottom:26px; z-index:40;
  display:inline-flex; align-items:center; gap:7px;
  font-family:var(--sans); font-size:12px; letter-spacing:.08em;
  color:var(--ink-2); background:rgba(255,255,255,.9);
  border:1px solid var(--line-2); border-radius:999px;
  padding:9px 18px 9px 14px;
  -webkit-backdrop-filter:blur(10px); backdrop-filter:blur(10px);
  box-shadow:0 8px 24px -14px rgba(60,48,30,.45);
  transition:background .18s, border-color .18s, transform .18s;
}
.back-fab:hover{background:#fff; border-color:#c3bbaa; transform:translateY(-1px);}
.back-fab svg{width:13px; height:13px;}

@media (max-width:860px){
  .pinned{grid-template-columns:1fr; gap:14px;}
  .pin{padding:22px 20px 18px;}
}
@media (max-width:720px){
  .back-fab{left:16px; bottom:16px; padding:8px 15px 8px 12px; font-size:11.5px;}
}
@media print{
  .back-fab{display:none !important;}
}