/* ===== 全站样式：深色轻奢 · 墨蓝 + 香槟金 ===== */
:root{
  --gold:#cfa96f;
  --gold-2:#e8cf9f;
  --gold-grad:linear-gradient(135deg,#a9823f 0%,#cfa96f 45%,#eed9ae 100%);
  --bg:#0a0f1c;
  --card:#101828;
  --card-2:#0d1420;
  --border:rgba(255,255,255,.07);
  --text:#e7e9f0;
  --text-strong:#f5f6fa;
  --muted:#8b93a7;
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --shadow:0 2px 6px rgba(0,0,0,.35),0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 6px 16px rgba(0,0,0,.45),0 20px 48px rgba(0,0,0,.5);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scrollbar-color:#2a3550 var(--bg)}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.8;font-size:16px;
  background-image:
    radial-gradient(1100px 460px at 85% -120px,rgba(207,169,111,.07),transparent),
    radial-gradient(900px 380px at 8% -100px,rgba(76,106,200,.09),transparent);
  background-attachment:fixed;
}
a{color:var(--gold);text-decoration:none;transition:color .25s}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
::selection{background:rgba(207,169,111,.28)}

/* 头部导航：深色毛玻璃 */
.site-header{
  background:rgba(10,15,28,.78);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:10;
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{
  font-family:var(--serif);font-size:21px;font-weight:700;letter-spacing:3px;
  background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.nav{display:flex;align-items:center}
.nav a{
  margin-left:8px;padding:7px 16px;border-radius:999px;color:var(--muted);
  font-size:14.5px;letter-spacing:1px;transition:all .25s;
}
.nav a:hover{color:var(--gold-2);background:rgba(207,169,111,.08)}
.nav a.active{
  color:#1a1206;background:var(--gold-grad);font-weight:600;
  box-shadow:0 4px 14px rgba(207,169,111,.3);
}

/* 面包屑 */
.crumb{font-size:13px;color:var(--muted);margin:18px 0;letter-spacing:.5px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--gold)}

/* 简介卡片：轻奢 Hero */
.intro{
  background:linear-gradient(160deg,#131c30 0%,#0d1420 60%,#0a0f1c 100%);
  border:1px solid var(--border);border-radius:var(--radius);
  padding:44px 40px;margin:18px 0;
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.intro::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--gold-grad);
}
.intro::after{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(207,169,111,.12),transparent 70%);
}
.intro h1{
  font-family:var(--serif);font-size:30px;font-weight:700;letter-spacing:6px;
  color:var(--text-strong);margin-bottom:10px;
}
.intro h1::after{
  content:"";display:block;width:56px;height:2px;margin-top:14px;
  background:var(--gold-grad);border-radius:2px;
}
.intro p{color:var(--muted);font-size:14.5px;max-width:660px;letter-spacing:.5px}

/* 栏目标题 */
.section-title{
  font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:2px;
  color:var(--text-strong);margin:30px 0 16px;
  display:flex;align-items:center;gap:12px;
}
.section-title::before{
  content:"";width:26px;height:2px;background:var(--gold-grad);border-radius:2px;flex:none;
}
.section-title small{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:12.5px;color:var(--muted);font-weight:400;letter-spacing:1px;
}

/* 文章列表 */
.list{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);counter-reset:item;
}
.list-item{
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  padding:17px 22px;border-bottom:1px solid var(--border);
  transition:background .25s;
}
.list-item:last-child{border-bottom:none}
.list-item:hover{background:rgba(207,169,111,.05)}
.list-item a{
  color:var(--text);font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  display:flex;align-items:center;gap:12px;min-width:0;letter-spacing:.5px;
}
.list-item a::before{
  counter-increment:item;content:counter(item,decimal-leading-zero);
  flex:none;font-family:var(--serif);font-size:13px;font-weight:700;
  color:var(--gold);opacity:.75;min-width:24px;transition:opacity .25s;
}
.list-item:hover a::before{opacity:1}
.list-item a:hover{color:var(--gold-2)}
.list-item time{flex:none;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

/* 分页 */
.pagination{display:flex;justify-content:center;align-items:center;gap:12px;margin:26px 0;font-size:14px}
.pagination a{
  padding:7px 18px;border-radius:999px;background:var(--card);
  border:1px solid var(--border);color:var(--text);letter-spacing:1px;transition:all .25s;
}
.pagination a:hover{background:var(--gold-grad);color:#1a1206;border-color:transparent}
.pagination span{color:var(--muted)}

/* 文章正文 */
.article{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:38px 36px;margin-bottom:18px;box-shadow:var(--shadow);
}
.article h1{
  font-family:var(--serif);font-size:27px;line-height:1.5;letter-spacing:1.5px;
  color:var(--text-strong);margin-bottom:14px;
}
.article .meta{
  font-size:13px;color:var(--muted);letter-spacing:1px;
  border-bottom:1px solid var(--border);padding-bottom:16px;margin-bottom:24px;
}
.article .meta span{margin-right:18px;display:inline-flex;align-items:center}
.article .content p{margin-bottom:16px;color:#c3c9d6;letter-spacing:.4px}
.article .content h2{
  font-family:var(--serif);font-size:20px;letter-spacing:1px;color:var(--text-strong);
  margin:30px 0 14px;padding-left:14px;position:relative;
}
.article .content h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:3px;background:var(--gold-grad);
}
.article .content ul{padding-left:22px;margin-bottom:16px;color:#c3c9d6}

/* 上一篇/下一篇 */
.prevnext{
  display:flex;justify-content:space-between;gap:14px;font-size:14px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:16px 22px;flex-wrap:wrap;box-shadow:var(--shadow);
}
.prevnext a{color:var(--muted);letter-spacing:.5px}
.prevnext a:hover{color:var(--gold-2)}

/* 栏目卡片（首页） */
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.col-card{
  display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 22px;text-align:center;box-shadow:var(--shadow);
  position:relative;overflow:hidden;transition:transform .3s,box-shadow .3s,border-color .3s;
}
.col-card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:2px;background:var(--gold-grad);
  transform:scaleX(0);transform-origin:left;transition:transform .3s;
}
.col-card h3{
  font-family:var(--serif);font-size:18px;letter-spacing:3px;
  margin-bottom:8px;color:var(--text-strong);
}
.col-card p{font-size:13px;color:var(--muted);letter-spacing:.5px}
.col-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(207,169,111,.25)}
.col-card:hover::before{transform:scaleX(1)}

/* 页脚 */
.site-footer{
  text-align:center;font-size:13px;color:var(--muted);letter-spacing:2px;
  padding:34px 16px;margin-top:14px;border-top:1px solid var(--border);
}

/* ===== 后台 ===== */
.admin-box{max-width:380px;margin:60px auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.admin-box h2{font-family:var(--serif);font-size:19px;letter-spacing:2px;margin-bottom:18px;text-align:center;color:var(--text-strong)}
.admin-box label{display:block;font-size:14px;margin-bottom:12px;color:var(--text)}
.admin-box input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;margin-top:4px;background:var(--card-2);color:var(--text);transition:border .25s,box-shadow .25s}
.admin-box input:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(207,169,111,.15)}
.btn{display:inline-block;background:var(--gold-grad);color:#1a1206;font-weight:600;border:none;border-radius:8px;padding:10px 22px;font-size:14px;letter-spacing:1px;cursor:pointer;transition:opacity .25s,transform .25s}
.btn:hover{opacity:.92;transform:translateY(-1px)}
.btn-muted{background:#39415a;color:var(--text)}
.error{color:#f07878;font-size:13px;margin-bottom:10px}
.admin-head{display:flex;justify-content:space-between;align-items:center;margin:18px 0;flex-wrap:wrap;gap:10px}
.admin-head h2{font-family:var(--serif);font-size:19px;letter-spacing:2px;color:var(--text-strong)}
.admin-table{width:100%;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);border-collapse:collapse;font-size:14px;margin-bottom:20px;box-shadow:var(--shadow);overflow:hidden}
.admin-table th,.admin-table td{padding:11px 14px;border-bottom:1px solid var(--border);text-align:left}
.admin-table th{background:var(--card-2);color:var(--text-strong);letter-spacing:1px}
.link-btn{background:none;border:none;color:#f07878;cursor:pointer;font-size:14px;padding:0;margin-left:8px}
.link-btn:hover{text-decoration:underline}
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;max-width:760px;margin:18px auto;box-shadow:var(--shadow)}
.form-card h2{font-family:var(--serif);font-size:19px;letter-spacing:2px;margin-bottom:16px;color:var(--text-strong)}
.form-card label{display:block;font-size:14px;margin-bottom:12px;color:var(--text)}
.form-card input,.form-card select,.form-card textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;margin-top:4px;font-family:inherit;background:var(--card-2);color:var(--text)}
.form-card textarea{min-height:280px}
.hint{display:block;font-size:12px;color:var(--muted);font-weight:400}

/* 移动端适配 */
@media (max-width:640px){
  .site-header .wrap{height:56px}
  .nav a{margin-left:2px;padding:6px 10px;font-size:13.5px;letter-spacing:0}
  .logo{font-size:18px;letter-spacing:2px}
  .intro{padding:28px 22px}
  .intro h1{font-size:23px;letter-spacing:3px}
  .cols{grid-template-columns:1fr}
  .list-item{padding:15px 16px}
  .list-item a{font-size:15px}
  .article{padding:24px 20px}
  .article h1{font-size:22px}
  .admin-table{font-size:13px}
  .admin-table th,.admin-table td{padding:8px}
}


/* ===== 模板变体：导航N1 金条下划线 + 页脚F1 ===== */
.nav a{border-radius:0;background:none!important;box-shadow:none;border-bottom:2px solid transparent;padding:7px 4px;margin-left:22px}
.nav a:hover{color:var(--gold-2)}
.nav a.active{color:var(--gold-2);border-bottom-color:var(--gold)}
.site-footer{border-top:1px solid var(--border);padding:44px 16px 30px}
.f1-name{font-family:var(--serif);font-size:22px;letter-spacing:8px;color:var(--gold-2);text-align:center}
.f1-rule{display:flex;align-items:center;justify-content:center;gap:12px;margin:16px 0}
.f1-rule i{width:60px;height:1px;background:var(--gold-grad)}
.f1-rule span{color:var(--gold);font-size:10px}
.f1-links{display:flex;justify-content:center;gap:26px;flex-wrap:wrap;margin-bottom:14px}
.f1-links a{color:var(--muted);font-size:13px;letter-spacing:2px}
.f1-links a:hover{color:var(--gold-2)}
.f1-copy{text-align:center;font-size:12px;color:var(--muted);letter-spacing:2px;margin-top:14px}
.article .content p{text-align:justify}
@media (max-width:640px){.nav a{margin-left:10px;padding:6px 2px;font-size:13px}}


/* ===== 模板变体：导航N1 金条下划线 + 页脚F1 ===== */
.nav a{border-radius:0;background:none!important;box-shadow:none;border-bottom:2px solid transparent;padding:7px 4px;margin-left:22px}
.nav a:hover{color:var(--gold-2)}
.nav a.active{color:var(--gold-2);border-bottom-color:var(--gold)}
.site-footer{border-top:1px solid var(--border);padding:44px 16px 30px}
.f1-name{font-family:var(--serif);font-size:22px;letter-spacing:8px;color:var(--gold-2);text-align:center}
.f1-rule{display:flex;align-items:center;justify-content:center;gap:12px;margin:16px 0}
.f1-rule i{width:60px;height:1px;background:var(--gold-grad)}
.f1-rule span{color:var(--gold);font-size:10px}
.f1-links{display:flex;justify-content:center;gap:26px;flex-wrap:wrap;margin-bottom:14px}
.f1-links a{color:var(--muted);font-size:13px;letter-spacing:2px}
.f1-links a:hover{color:var(--gold-2)}
.f1-copy{text-align:center;font-size:12px;color:var(--muted);letter-spacing:2px;margin-top:14px}
.article .content p{text-align:justify}
@media (max-width:640px){.nav a{margin-left:10px;padding:6px 2px;font-size:13px}}