/* ==========================================================================
   《云林石谱》数字化典藏 · 主题设计系统
   风格：宋代文人 · 水墨卷轴 · 青绿山水 · 宣纸印章
   ========================================================================== */

:root{
  /* 宣纸底 */
  --paper:        #f4ecdd;
  --paper-deep:   #ece0ca;
  --paper-light:  #faf5ea;
  --paper-shadow: #d9c9a8;
  /* 墨色 */
  --ink:          #2b2925;
  --ink-soft:     #4a453c;
  --ink-faint:    #6f6659;
  --ink-mute:     #8c8272;
  /* 青绿山水 */
  --teal:         #3f5d54;
  --teal-soft:    #5f7d70;
  --azure:        #4a6b7a;
  --azure-soft:   #6f8d99;
  /* 赭石 / 朱砂印章 */
  --ochre:        #8a5a3c;
  --ochre-soft:   #a97b58;
  --seal:         #b23a2e;
  --seal-deep:    #8e2a1f;
  /* 玉白 */
  --jade:         #e8e2d4;
  --gold:         #b8955a;
  /* 阴影与描边 */
  --line:         rgba(43,41,37,.14);
  --shadow:       0 10px 30px rgba(80,64,40,.10), 0 2px 8px rgba(80,64,40,.06);
  --radius:       10px;
  --font-serif:   "Kaiti SC","KaiTi","STKaiti","楷体","SimSun","Songti SC","宋体",serif;
  --font-body:    "Kaiti SC","KaiTi","STKaiti","楷体","SimSun","Songti SC","宋体","Microsoft YaHei",serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.75;
  letter-spacing:.02em;
  /* 宣纸质感 */
  background-image:
    radial-gradient(circle at 20% 10%, rgba(255,255,255,.18), transparent 40%),
    radial-gradient(circle at 80% 90%, rgba(200,180,140,.14), transparent 40%),
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(150,130,90,.02) 2px, rgba(150,130,90,.02) 4px);
  min-height:100vh;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;background:none;border:none;color:inherit}
h1,h2,h3,h4{font-weight:600;line-height:1.4}

/* 卷轴水印背景 */
.scroll-marks{
  position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
}
.scroll-marks::before,.scroll-marks::after{
  content:"";position:absolute;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,transparent,#b9a67f 8%,#b9a67f 92%,transparent);
}
.scroll-marks::before{left:clamp(8px,3vw,28px)}
.scroll-marks::after{right:clamp(8px,3vw,28px)}

/* ============ 顶部导航（卷轴竹轴） ============ */
.site-head{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(180deg,var(--paper) 0%,rgba(244,236,221,.92) 90%);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(4px);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:10px 20px;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto}
.brand-seal{
  width:42px;height:42px;flex:none;border-radius:6px;
  background:var(--seal);color:#f7ead6;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-weight:700;font-size:15px;
  box-shadow:inset 0 0 0 2px rgba(247,234,214,.55), 0 3px 8px rgba(138,42,31,.35);
}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-txt strong{font-family:var(--font-serif);font-size:20px;letter-spacing:.28em}
.brand-txt small{font-size:11px;color:var(--ink-faint);letter-spacing:.18em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav-links a{
  padding:8px 14px;font-size:15px;letter-spacing:.16em;color:var(--ink-soft);
  border-radius:6px;position:relative;transition:.25s;
}
.nav-links a:hover{color:var(--seal-deep);background:rgba(178,58,46,.05)}
.nav-links a.on{color:var(--seal-deep)}
.nav-links a.on::after{
  content:"";position:absolute;left:50%;bottom:3px;transform:translateX(-50%);
  width:16px;height:2px;background:var(--seal);border-radius:2px;
}
.nav-search{display:flex;align-items:center;border:1px solid var(--line);border-radius:20px;
  background:var(--paper-light);overflow:hidden}
.nav-search input{border:none;outline:none;background:transparent;padding:6px 4px 6px 14px;width:180px;
  font-family:inherit;font-size:13px;color:var(--ink)}
.nav-search button{padding:6px 14px;color:var(--seal-deep);font-size:15px}
@media(max-width:760px){
  .nav-inner{gap:8px}
  .nav-search{order:5;width:100%}
  .nav-search input{flex:1;width:auto}
  .nav-links{order:4}
  .brand-txt strong{font-size:17px}
}

/* ============ 通用容器 ============ */
.wrap{max-width:1200px;margin:0 auto;padding:26px 20px 60px}
.page-title{
  text-align:center;margin:34px 0 8px;position:relative;
}
.page-title .chinesechar{display:none}
.page-title h1{
  font-family:var(--font-serif);font-size:clamp(30px,5vw,48px);
  letter-spacing:.3em;text-indent:.3em;color:var(--ink);
}
.page-title .en{
  font-size:12px;letter-spacing:.5em;color:var(--ink-mute);margin-top:6px;
  text-transform:uppercase;
}
.page-title::before,.page-title::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);background:var(--gold);
}
.page-title::before{width:120px;height:2px;bottom:-8px}
.page-title .sub{max-width:640px;margin:16px auto 0;color:var(--ink-faint);font-size:14px}

/* 印章分隔 */
.seal-divider{text-align:center;margin:26px 0;color:var(--seal)}
.seal-divider span{
  display:inline-block;font-family:var(--font-serif);font-size:26px;letter-spacing:.3em;
}
.section-title{
  display:flex;align-items:center;gap:12px;margin:38px 0 18px;
  font-family:var(--font-serif);font-size:clamp(20px,3vw,26px);letter-spacing:.16em;color:var(--ink);
}
.section-title::before{content:"";width:8px;height:8px;background:var(--seal);transform:rotate(45deg);flex:none}
.section-title small{font-size:12px;color:var(--ink-mute);letter-spacing:.1em;font-weight:400;margin-left:auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid var(--ochre);color:var(--ochre);
  padding:9px 20px;border-radius:30px;font-size:14px;letter-spacing:.1em;
  transition:.25s;background:transparent;
}
.btn:hover{background:var(--ochre);color:#f7ead6}
.btn.seal{background:var(--seal);border-color:var(--seal);color:#f7ead6}
.btn.seal:hover{background:var(--seal-deep)}
.btn.ghost{border-color:var(--line);color:var(--ink-soft)}
.btn.ghost:hover{background:var(--paper-deep)}

/* ============ 石谱卡片 ============ */
.stone-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:18px}
@media(max-width:640px){.stone-grid{grid-template-columns:repeat(2,1fr);gap:12px}}
.stone-card{
  position:relative;background:var(--paper-light);
  border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.3s;box-shadow:0 3px 12px rgba(80,64,40,.07);
  display:flex;flex-direction:column;
}
.stone-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--gold)}
.stone-media{position:relative;aspect-ratio:1/1;background:var(--paper-deep);overflow:hidden}
.stone-media img{width:100%;height:100%;object-fit:cover;transition:.5s}
.stone-card:hover .stone-media img{transform:scale(1.06)}
.stone-media .ph{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(circle at 70% 30%, rgba(79,93,84,.18), transparent 55%),
    linear-gradient(160deg,var(--paper-deep),#ded0b2);
}
.stone-media .ph .big{
  font-family:var(--font-serif);font-size:52px;color:var(--ink-soft);
  text-shadow:0 1px 2px rgba(255,255,255,.5);
}
.stone-tag{
  position:absolute;top:10px;left:10px;font-size:11px;padding:3px 9px;border-radius:4px;
  background:rgba(244,236,221,.9);color:var(--ochre);border:1px solid var(--ochre-soft);
  letter-spacing:.08em;
}
.stone-tag.mod{background:rgba(74,107,122,.14);color:var(--azure);border-color:var(--azure-soft)}
.stone-fav{
  position:absolute;top:8px;right:8px;width:34px;height:34px;border-radius:50%;
  background:rgba(244,236,221,.9);display:flex;align-items:center;justify-content:center;
  color:var(--ink-mute);font-size:18px;box-shadow:0 2px 6px rgba(0,0,0,.12);transition:.2s;
}
.stone-fav.on{color:var(--seal-deep)}
.stone-fav:hover{transform:scale(1.1)}
.stone-body{padding:12px 14px;display:flex;flex-direction:column;flex:1}
.stone-name{font-family:var(--font-serif);font-size:19px;letter-spacing:.08em;color:var(--ink)}
.stone-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px;font-size:12px;color:var(--ink-mute)}
.stone-meta i{font-style:normal;color:var(--teal)}
.stone-brief{font-size:12.5px;color:var(--ink-faint);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.stone-foot{display:flex;align-items:center;justify-content:space-between;margin-top:10px;
  border-top:1px dashed var(--line);padding-top:9px}
.stone-foot .vol{font-size:11px;color:var(--ink-mute)}
.stone-foot .go{color:var(--ochre);font-size:13px}

/* ============ 地图页 ============ */
.map-layout{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:start}
@media(max-width:920px){.map-layout{grid-template-columns:1fr}}
.map-stage{
  background:var(--paper-light);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;position:relative;box-shadow:0 3px 14px rgba(80,64,40,.07);
}
.map-stage svg{width:100%;height:auto;display:block}
.map-tip{
  position:absolute;top:18px;left:50%;transform:translateX(-50%);
  background:rgba(43,41,37,.82);color:#f4ecdd;font-size:13px;padding:6px 16px;border-radius:20px;
  letter-spacing:.1em;pointer-events:none;opacity:0;transition:.25s;white-space:nowrap;z-index:5;
}
.map-tip.show{opacity:1}
.map-legend{display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap;
  margin-top:12px;font-size:12px;color:var(--ink-faint)}
.map-legend .sw{width:14px;height:14px;border-radius:3px;border:1px solid var(--line)}
.map-side{
  background:var(--paper-light);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;max-height:78vh;overflow:auto;
}
.map-side h3{font-family:var(--font-serif);font-size:22px;letter-spacing:.1em;color:var(--ink);
  padding-bottom:10px;border-bottom:2px solid var(--gold)}
.map-side .prov-sub{font-size:12px;color:var(--ink-mute);margin-top:4px}
.map-side .empty{padding:30px 10px;text-align:center;color:var(--ink-mute);font-size:13px;line-height:2}
.map-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:14px}
.map-stone{
  border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--paper-light);
  transition:.25s;cursor:pointer;
}
.map-stone:hover{border-color:var(--ochre);transform:translateY(-3px);box-shadow:0 6px 16px rgba(80,64,40,.12)}
.map-stone .mimg{aspect-ratio:4/3;background:var(--paper-deep);position:relative;overflow:hidden}
.map-stone .mimg img{width:100%;height:100%;object-fit:cover}
.map-stone .mimg .ph{width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:30px;color:var(--ink-soft);background:linear-gradient(150deg,var(--paper-deep),#dccfb2)}
.map-stone .minfo{padding:8px 10px}
.map-stone .mname{font-family:var(--font-serif);font-size:15px;letter-spacing:.06em}
.map-stone .msub{font-size:11px;color:var(--ink-mute);margin-top:2px}
.map-stat{display:flex;gap:16px;flex-wrap:wrap;margin-top:12px;font-size:13px;color:var(--ink-soft)}
.map-stat b{color:var(--seal-deep);font-size:20px;font-family:var(--font-serif)}
.map-chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.map-chip{border:1px solid var(--line);border-radius:20px;padding:5px 14px;font-size:13px;
  color:var(--ink-soft);transition:.2s;background:transparent}
.map-chip:hover{border-color:var(--ochre);color:var(--ochre)}
.map-chip.on{background:var(--seal);border-color:var(--seal);color:#f7ead6}

/* ============ 详情页 ============ */
.detail-head{display:grid;grid-template-columns:minmax(260px,420px) 1fr;gap:30px;align-items:start}
@media(max-width:860px){.detail-head{grid-template-columns:1fr}}
.detail-media{position:relative;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--paper-light);box-shadow:var(--shadow)}
.detail-media img{width:100%;aspect-ratio:1/1;object-fit:cover}
.detail-media .ph{width:100%;aspect-ratio:1/1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:radial-gradient(circle at 70% 26%, rgba(79,93,84,.2), transparent 55%),linear-gradient(160deg,var(--paper-deep),#dccfb2)}
.detail-media .ph .big{font-family:var(--font-serif);font-size:110px;color:var(--ink-soft);text-shadow:0 2px 4px rgba(255,255,255,.4)}
.detail-media .ph em{font-style:normal;color:var(--ink-mute);letter-spacing:.4em;font-size:13px;margin-top:8px}
.detail-main h1{font-family:var(--font-serif);font-size:clamp(26px,4vw,38px);letter-spacing:.1em}
.detail-main .origin{font-size:13px;color:var(--ink-mute);margin-top:4px;letter-spacing:.08em}
.detail-brief{margin-top:16px;font-size:16px;color:var(--ink-soft);line-height:2}
.detail-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.dtag{border:1px solid var(--line);background:var(--paper-light);border-radius:20px;
  padding:5px 15px;font-size:13px;color:var(--ink-soft)}
.dtag i{font-style:normal;color:var(--seal-deep);font-weight:600;margin-right:4px}
.detail-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.detail-facts{margin-top:26px;border-top:1px dashed var(--line);padding-top:16px;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.detail-facts .f b{display:block;font-size:12px;color:var(--ink-mute);font-weight:400;letter-spacing:.1em}
.detail-facts .f span{font-size:15px;color:var(--ink);font-family:var(--font-serif)}

/* 古籍原文卷轴 */
.ancient{
  margin-top:26px;background:linear-gradient(180deg,#faf3e2,#f1e6cd);
  border:1px solid var(--gold);border-radius:var(--radius);position:relative;overflow:hidden;
  box-shadow:var(--shadow);
}
.ancient::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:6px;
  background:linear-gradient(180deg,var(--ochre),var(--gold),var(--ochre));
}
.ancient::after{
  content:"卷";position:absolute;right:14px;top:10px;font-family:var(--font-serif);
  font-size:15px;color:var(--gold);letter-spacing:.1em;
}
.ancient-head{display:flex;align-items:center;gap:10px;padding:16px 24px 10px}
.ancient-head b{font-family:var(--font-serif);font-size:19px;letter-spacing:.14em;color:var(--ochre)}
.ancient-head span{font-size:12px;color:var(--ink-mute)}
.ancient-body{padding:4px 28px 20px 24px;font-size:15.5px;line-height:2.2;color:var(--ink-soft);
  text-align:justify;letter-spacing:.03em}
.ancient-body .seal-mark{color:var(--seal-deep);font-family:var(--font-serif)}

/* ============ 首页 ============ */
.hero{
  position:relative;text-align:center;padding:70px 20px 40px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:140px;z-index:-1;
  background:linear-gradient(180deg,transparent,rgba(63,93,84,.08));
}
.hero .hero-seal{
  width:56px;height:56px;margin:0 auto 18px;border-radius:8px;
  background:var(--seal);color:#f7ead6;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-weight:700;font-size:20px;
  box-shadow:inset 0 0 0 2px rgba(247,234,214,.5),0 4px 14px rgba(138,42,31,.4);
}
.hero h1{font-family:var(--font-serif);font-size:clamp(34px,6vw,58px);letter-spacing:.34em;text-indent:.34em}
.hero .sub{font-size:clamp(14px,2.4vw,17px);color:var(--ink-soft);letter-spacing:.22em;margin-top:16px}
.hero .sub i{font-style:normal;color:var(--seal-deep)}
.hero .tagline{max-width:720px;margin:26px auto 0;font-size:15px;line-height:2;color:var(--ink-faint);
  text-align:center}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:30px}
/* 水墨山峦（SVG装饰） */
.mountains{display:block;width:100%;height:auto;margin-top:8px;opacity:.7}
/* 首页统计条 */
.stat-band{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:14px;
  background:var(--paper-light);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;margin:30px 0;box-shadow:0 3px 14px rgba(80,64,40,.07)}
.stat-band .st{text-align:center}
.stat-band .st b{display:block;font-family:var(--font-serif);font-size:34px;color:var(--seal-deep)}
.stat-band .st span{font-size:12px;color:var(--ink-mute);letter-spacing:.12em}

/* 四大名石 */
.four{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.four-item{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:0 3px 14px rgba(80,64,40,.08);transition:.3s;background:var(--paper-light)}
.four-item:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.four-item img{width:100%;aspect-ratio:4/3;object-fit:cover}
.four-item .fo{position:absolute;left:0;right:0;bottom:0;padding:40px 16px 14px;
  background:linear-gradient(180deg,transparent,rgba(20,18,15,.82))}
.four-item .fo b{font-family:var(--font-serif);font-size:22px;color:#f4ecdd;letter-spacing:.1em}
.four-item .fo span{display:block;font-size:12px;color:#d9c9a8;margin-top:2px}
.four-item .rank{position:absolute;top:10px;left:10px;font-family:var(--font-serif);font-size:14px;
  color:#f4ecdd;background:var(--seal);padding:2px 10px;border-radius:4px;letter-spacing:.1em}

/* 今日一石 */
.daily{
  background:linear-gradient(180deg,#f6efe0,#eee2c9);border:1px solid var(--gold);border-radius:var(--radius);
  padding:22px 24px;display:flex;gap:20px;align-items:center;box-shadow:var(--shadow);
}
@media(max-width:680px){.daily{flex-direction:column;align-items:flex-start}}
.daily .dimg{width:130px;height:130px;flex:none;border-radius:8px;overflow:hidden;border:1px solid var(--ochre-soft)}
.daily .dimg img{width:100%;height:100%;object-fit:cover}
.daily .dimg .ph{width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:60px;color:var(--ink-soft);background:linear-gradient(150deg,var(--paper-deep),#dccfb2)}
.daily .din{flex:1}
.daily .din .dlabel{font-size:12px;color:var(--seal-deep);letter-spacing:.2em}
.daily .din h3{font-family:var(--font-serif);font-size:26px;margin-top:2px;letter-spacing:.1em}
.daily .din p{font-size:14px;color:var(--ink-faint);margin-top:8px;line-height:1.9}
.daily .din .dgo{margin-top:12px}

/* 文化脉络时间线 */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--gold),var(--ochre),var(--teal))}
.tl-item{position:relative;padding:0 0 26px 6px}
.tl-item::before{content:"";position:absolute;left:-23px;top:6px;width:14px;height:14px;
  border-radius:50%;background:var(--paper-light);border:3px solid var(--ochre)}
.tl-item h4{font-family:var(--font-serif);font-size:18px;color:var(--ink)}
.tl-item h4 small{color:var(--seal-deep);margin-left:8px;font-size:13px}
.tl-item p{font-size:14px;color:var(--ink-faint);margin-top:4px}

/* 页脚 */
.site-foot{margin-top:40px;border-top:1px solid var(--line);background:var(--paper-deep);padding:26px 20px}
.foot-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.foot-inner .fb{font-size:12px;color:var(--ink-mute);line-height:2}
.foot-inner .fb b{color:var(--ochre);font-family:var(--font-serif);letter-spacing:.1em}
.foot-seal{width:34px;height:34px;border-radius:6px;background:var(--seal);color:#f7ead6;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);font-size:12px}

/* ============ 筛选器（总目页） ============ */
.filter-bar{background:var(--paper-light);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;margin-bottom:22px;box-shadow:0 3px 12px rgba(80,64,40,.06)}
.filter-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.filter-row:last-child{margin-bottom:0}
.filter-row .flabel{font-size:13px;color:var(--ink-mute);letter-spacing:.1em;width:44px;flex:none}
.chip{border:1px solid var(--line);border-radius:20px;padding:4px 13px;font-size:13px;color:var(--ink-soft);
  transition:.2s;background:transparent;cursor:pointer}
.chip:hover{border-color:var(--ochre);color:var(--ochre)}
.chip.on{background:var(--seal);border-color:var(--seal);color:#f7ead6}
.chip.all{background:var(--ink);border-color:var(--ink);color:#f4ecdd}
.chip .n{font-size:11px;opacity:.8;margin-left:2px}
.result-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-bottom:16px;font-size:13px;color:var(--ink-mute)}
.result-bar b{color:var(--seal-deep)}
.fav-toggle{border:1px solid var(--line);border-radius:20px;padding:5px 15px;font-size:13px;color:var(--ink-soft)}
.fav-toggle.on{color:var(--seal-deep);border-color:var(--seal)}

/* ============ 搜索无结果 ============ */
.noresult{text-align:center;padding:50px 20px;color:var(--ink-mute)}
.noresult .ic{font-family:var(--font-serif);font-size:56px;color:var(--gold)}

/* ============ 文化页 ============ */
.culture-body{display:grid;grid-template-columns:1fr;gap:26px;max-width:860px;margin:0 auto}
.prose{font-size:15.5px;line-height:2.15;color:var(--ink-soft);text-align:justify}
.prose p{margin-bottom:16px}
.prose .lead{font-size:17px;color:var(--ink)}
.prose strong{color:var(--ochre)}
.quote{
  border-left:4px solid var(--ochre);background:var(--paper-light);padding:16px 22px;margin:20px 0;
  font-family:var(--font-serif);color:var(--ink);font-size:16px;line-height:2;letter-spacing:.06em;
  border-radius:0 8px 8px 0;
}
.quote cite{display:block;margin-top:8px;font-size:13px;color:var(--ink-mute);font-style:normal}
.four-trait{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin:22px 0}
.trait{border:1px solid var(--line);border-radius:var(--radius);padding:18px 14px;text-align:center;
  background:var(--paper-light)}
.trait .tt{font-family:var(--font-serif);font-size:34px;color:var(--seal-deep)}
.trait b{display:block;margin-top:4px;font-size:15px;letter-spacing:.2em}
.trait span{font-size:12px;color:var(--ink-mute);line-height:1.8;display:block;margin-top:6px}

/* 通用工具 */
.hidden{display:none!important}
.text-mute{color:var(--ink-mute)}
.center{text-align:center}
.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.back-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;
  background:var(--seal);color:#f7ead6;font-size:18px;box-shadow:0 6px 16px rgba(138,42,31,.35);
  display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:.3s;z-index:60}
.back-top.show{opacity:1;pointer-events:auto}

/* 滚动条美化 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--ochre-soft);border-radius:6px;border:2px solid var(--paper)}
::-webkit-scrollbar-track{background:var(--paper-deep)}

/* 打印/减小 */
@media print{.site-head,.site-foot,.back-top{display:none}}