/* ============================================================
   导航网站 - 全站样式系统 v3
   设计语言：蓝紫渐变 · 毛玻璃顶栏 · 圆角卡片 · 深色模式
   覆盖：前台页面 + 管理后台 + 登录/注册/用户中心
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root{
  --brand-50:#eef2ff;
  --brand-100:#e0e7ff;
  --brand-200:#c7d2fe;
  --brand-400:#818cf8;
  --brand-500:#6366f1;
  --brand-600:#4f46e5;
  --brand-700:#4338ca;
  --violet:#7c3aed;
  --pink:#db2777;
  --cyan:#06b6d4;
  --green:#059669;
  --orange:#d97706;
  --red:#dc2626;
  --grad:linear-gradient(135deg,#6366f1 0%,#8b5cf6 55%,#d946ef 120%);
  --grad-soft:linear-gradient(135deg,rgba(99,102,241,.10),rgba(139,92,246,.10));

  --bg:#f4f5fb;
  --bg-deep:#eef0f9;
  --card:#ffffff;
  --card-2:#f8f9ff;
  --text:#111827;
  --text-2:#4b5563;
  --muted:#8b93a7;
  --border:#e5e8f2;
  --border-2:#d8ddf0;

  --shadow-sm:0 1px 2px rgba(17,24,39,.05);
  --shadow:0 2px 8px rgba(79,70,229,.06),0 10px 30px rgba(79,70,229,.07);
  --shadow-lg:0 4px 12px rgba(17,24,39,.07),0 20px 50px rgba(79,70,229,.14);
  --glow:0 0 0 3px rgba(99,102,241,.18);
  --topbar-bg:rgba(255,255,255,.82);
  --input-bg:#f4f5fb;
  --input-border:#b9c3de;

  --radius:14px;
  --radius-sm:9px;
  --radius-lg:20px;
}
[data-theme="dark"]{
  --brand-50:#1e2140;
  --brand-100:#262a52;
  --brand-200:#3a3f7d;
  --brand-400:#818cf8;
  --brand-500:#818cf8;
  --brand-600:#6366f1;
  --brand-700:#818cf8;
  --violet:#a78bfa;
  --pink:#f472b6;
  --cyan:#22d3ee;
  --green:#34d399;
  --orange:#fbbf24;
  --red:#f87171;
  --grad:linear-gradient(135deg,#6366f1 0%,#8b5cf6 55%,#c026d3 120%);

  --bg:#0b1020;
  --bg-deep:#0d1326;
  --card:#141b33;
  --card-2:#1a2240;
  --text:#e8eaf6;
  --text-2:#b0b8d4;
  --muted:#7c86a8;
  --border:#232c4d;
  --border-2:#2e3a63;

  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow:0 2px 8px rgba(0,0,0,.35),0 10px 30px rgba(0,0,0,.3);
  --shadow-lg:0 4px 12px rgba(0,0,0,.4),0 20px 50px rgba(0,0,0,.45);
  --glow:0 0 0 3px rgba(99,102,241,.30);
  --topbar-bg:rgba(20,27,51,.82);
  --input-bg:#10172e;
  --input-border:#3e4b80;
}

/* ---------- 基础 ---------- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
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:1.65;
  transition:background .35s,color .35s;
  min-height:100vh;display:flex;flex-direction:column;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand-500);text-decoration:none;transition:color .2s}
a:hover{color:var(--brand-600)}
img{max-width:100%}
.wrap{max-width:1240px;margin:0 auto;padding:0 20px;width:100%}
::selection{background:rgba(99,102,241,.25)}

/* ---------- 顶部导航（毛玻璃） ---------- */
.topbar{
  position:sticky;top:0;z-index:100;
  background:var(--topbar-bg);
  backdrop-filter:blur(16px) saturate(1.4);
  -webkit-backdrop-filter:blur(16px) saturate(1.4);
  border-bottom:1px solid var(--border);
  transition:background .35s,border-color .35s;
}
.topbar-in{display:flex;align-items:center;height:64px;gap:22px}
.logo{font-size:21px;font-weight:800;color:var(--text);letter-spacing:.4px;display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo .logo-badge{
  width:34px;height:34px;border-radius:10px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;font-style:normal;font-size:16px;
  box-shadow:0 6px 16px rgba(99,102,241,.4);position:relative;overflow:hidden;
}
.logo .logo-badge::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.35) 50%,transparent 70%);
  transform:translateX(-100%);animation:shine 3.5s ease-in-out infinite;
}
@keyframes shine{0%,60%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.mainnav{display:flex;gap:4px;flex:1}
.mainnav a{
  padding:9px 16px;border-radius:10px;color:var(--text-2);font-size:14px;font-weight:600;position:relative;
}
.mainnav a:hover{background:var(--grad-soft);color:var(--brand-600)}
.mainnav a.on{color:var(--brand-600);background:var(--grad-soft)}
.topbar-right{display:flex;align-items:center;gap:8px;font-size:14px}
.topbar-right .u-link{padding:8px 14px;border-radius:10px;color:var(--text-2);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.topbar-right .u-link:hover{background:var(--grad-soft);color:var(--brand-600)}
.topbar-right .btn-ghost{
  padding:8px 16px;border-radius:10px;border:1px solid var(--border-2);color:var(--text-2);
  font-weight:600;background:transparent;cursor:pointer;font-size:13px;transition:all .2s;
}
.topbar-right .btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--grad-soft)}
.topbar-right .btn-solid{
  padding:8px 18px;border-radius:10px;background:var(--grad);color:#fff;font-weight:600;font-size:13px;
  box-shadow:0 4px 12px rgba(99,102,241,.32);transition:all .2s;border:0;cursor:pointer;
}
.topbar-right .btn-solid:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(99,102,241,.42);color:#fff}
.btn-theme{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--border-2);background:var(--card);
  cursor:pointer;font-size:17px;display:inline-flex;align-items:center;justify-content:center;transition:all .25s;
}
.btn-theme:hover{border-color:var(--brand-500);box-shadow:var(--glow);transform:rotate(12deg)}
.btn-menu{
  display:none;width:38px;height:38px;border-radius:11px;border:1px solid var(--border-2);background:var(--card);
  cursor:pointer;font-size:17px;align-items:center;justify-content:center;
}

/* ---------- 布局 ---------- */
.layout{display:grid;grid-template-columns:248px 1fr;gap:22px;padding:24px 20px;flex:1;align-items:start;max-width:1240px;margin:0 auto;width:100%}

/* ---------- 侧边栏分类 ---------- */
.sidebar{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:18px 14px;position:sticky;top:86px;box-shadow:var(--shadow);transition:background .35s,border-color .35s;
}
.side-title{
  font-size:12px;color:var(--muted);font-weight:800;padding:4px 10px 12px;letter-spacing:1.5px;
  border-bottom:1px solid var(--border);margin-bottom:10px;display:flex;align-items:center;gap:8px;
}
.side-title::before{content:'';width:4px;height:14px;border-radius:3px;background:var(--grad)}
.cat-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.cat-list a{
  display:flex;align-items:center;gap:11px;padding:9px 10px;font-size:14px;color:var(--text-2);
  border-radius:11px;font-weight:600;transition:all .2s;
}
.cat-list a:hover{background:var(--grad-soft);color:var(--brand-600);transform:translateX(4px)}
.cat-list a .cat-icon{
  width:30px;height:30px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;flex-shrink:0;font-weight:700;box-shadow:var(--shadow-sm);
}
.cat-list a .cat-count{margin-left:auto;font-size:11px;color:var(--muted);background:var(--bg);padding:1px 8px;border-radius:20px;font-weight:600}
.cat-list a:hover .cat-count{background:var(--card);color:var(--brand-500)}

/* ---------- Hero 搜索区 ---------- */
.hero{
  position:relative;border-radius:var(--radius-lg);padding:46px 40px;color:#fff;overflow:hidden;
  background:linear-gradient(135deg,#4f46e5 0%,#7c3aed 48%,#c026d3 100%);
  box-shadow:0 16px 44px rgba(109,66,234,.38);margin-bottom:22px;
}
.hero::before{
  content:'';position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.22) 1.5px,transparent 1.5px);
  background-size:26px 26px;
}
.hero::after{
  content:'';position:absolute;right:-80px;top:-100px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 65%);
}
.hero .orb{position:absolute;border-radius:50%;filter:blur(2px)}
.hero .orb.o1{width:120px;height:120px;background:rgba(255,255,255,.14);left:-30px;bottom:-40px}
.hero .orb.o2{width:70px;height:70px;background:rgba(255,255,255,.18);left:140px;bottom:-20px}
.hero h2{font-size:26px;font-weight:800;margin-bottom:8px;position:relative;z-index:1;letter-spacing:.5px}
.hero p{font-size:14px;opacity:.9;position:relative;z-index:1;margin-bottom:20px}
.hero form{display:flex;gap:10px;position:relative;z-index:1;max-width:680px}
.hero .search-ipt-wrap{position:relative;flex:1}
.hero .search-ipt-wrap .s-icon{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);width:18px;height:18px;opacity:.55;
  pointer-events:none;
}
.hero input[type="text"]{
  width:100%;padding:15px 18px 15px 46px;border:0;border-radius:14px;font-size:15px;outline:none;
  box-shadow:0 6px 20px rgba(0,0,0,.22);color:var(--text);background:#fff;transition:box-shadow .25s;
}
.hero input[type="text"]:focus{box-shadow:0 0 0 4px rgba(255,255,255,.35),0 6px 20px rgba(0,0,0,.22)}
.hero button{
  padding:0 30px;background:#0f0a2e;color:#fff;border:0;border-radius:14px;cursor:pointer;
  font-size:15px;font-weight:700;transition:all .25s;white-space:nowrap;display:inline-flex;align-items:center;gap:8px;
}
.hero button:hover{background:#1b1240;transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.3)}
.hero .hot-words{margin-top:16px;position:relative;z-index:1;display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12px}
.hero .hot-words span{opacity:.85}
.hero .hot-words a{color:#fff;opacity:.9;background:rgba(255,255,255,.14);padding:4px 12px;border-radius:20px;transition:all .2s;font-weight:500}
.hero .hot-words a:hover{opacity:1;background:rgba(255,255,255,.28);transform:translateY(-1px)}

/* ---------- 板块 ---------- */
.section{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:22px;margin-bottom:20px;box-shadow:var(--shadow);transition:background .35s,border-color .35s;
}
.section-head{
  display:flex;align-items:center;gap:10px;margin-bottom:18px;padding-bottom:13px;
  border-bottom:1px solid var(--border);
}
.section-head .sec-ico{
  width:34px;height:34px;border-radius:10px;background:var(--grad-soft);display:inline-flex;
  align-items:center;justify-content:center;font-size:17px;flex-shrink:0;
}
.section-head h3{font-size:16px;font-weight:800;color:var(--text);flex:1}
.section-head .sec-more{font-size:12px;color:var(--muted);font-weight:600}
.section-head .sec-more:hover{color:var(--brand-600)}
.section-head .sec-bar{width:4px;height:18px;border-radius:3px;background:var(--grad);flex-shrink:0}

/* ---------- 导航卡片 ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(236px,1fr));gap:16px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:16px;display:flex;gap:13px;transition:all .28s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;
}
.card-top{
  position:absolute;top:12px;right:12px;z-index:2;
  font-size:10.5px;font-weight:800;letter-spacing:.4px;
  background:linear-gradient(135deg,#f59e0b,#f97316);color:#fff;
  padding:3px 9px;border-radius:999px;box-shadow:0 4px 12px rgba(245,158,11,.4);
}
.card::before{
  content:'';position:absolute;inset:0 0 auto 0;height:3px;background:var(--grad);
  opacity:0;transition:opacity .28s;border-radius:var(--radius) var(--radius) 0 0;
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:transparent}
.card:hover::before{opacity:1}
.card .logo-img{
  width:50px;height:50px;border-radius:13px;background:var(--card-2);
  flex-shrink:0;object-fit:contain;padding:6px;border:1px solid var(--border);transition:transform .28s;
}
.card:hover .logo-img{transform:scale(1.08) rotate(-3deg)}
.card .logo-fallback{
  width:50px;height:50px;border-radius:13px;background:var(--grad);color:#fff;font-weight:800;font-size:21px;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 6px 16px rgba(99,102,241,.35);
  transition:transform .28s;
}
.card:hover .logo-fallback{transform:scale(1.08) rotate(-3deg)}
.card .c-body{min-width:0;flex:1}
.card h4{font-size:14.5px;font-weight:700;margin-bottom:3px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card h4 a{color:var(--text)}
.card h4 a:hover{color:var(--brand-600)}
.card p{font-size:12px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.55}
.card .c-foot{display:flex;align-items:center;gap:8px;margin-top:8px;flex-wrap:wrap}
.card .c-tags{display:flex;gap:4px;flex-wrap:wrap;min-width:0}
.tag{
  display:inline-block;padding:2px 9px;background:var(--grad-soft);color:var(--brand-600);
  border-radius:20px;font-size:11px;font-weight:700;white-space:nowrap;
}
.card .c-views{margin-left:auto;font-size:11px;color:var(--muted);display:inline-flex;align-items:center;gap:3px;flex-shrink:0}
.card .c-views svg{width:12px;height:12px;opacity:.6}

/* ---------- 文章 ---------- */
.art-list{display:flex;flex-direction:column;gap:10px}
.art-item{
  display:flex;align-items:center;gap:14px;padding:13px 16px;background:var(--card-2);
  border-radius:12px;color:var(--text);border:1px solid transparent;transition:all .22s;
}
.art-item:hover{background:var(--grad-soft);border-color:var(--brand-200);transform:translateX(5px)}
.art-item .art-no{
  width:30px;height:30px;border-radius:9px;background:var(--grad);color:#fff;font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.art-item b{font-size:14px;color:var(--text);font-weight:700;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.art-item .art-meta{font-size:12px;color:var(--muted);margin-top:2px;display:flex;align-items:center;gap:10px}
.art-item .art-meta svg{width:12px;height:12px;opacity:.6}

/* ---------- 文章详情 ---------- */
.article-body{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:34px;font-size:15px;line-height:1.95;box-shadow:var(--shadow)}
.article-body h1{font-size:27px;margin-bottom:8px;color:var(--text)}
.article-body h2,.article-body h3{margin:24px 0 10px;color:var(--text)}
.article-body h2{border-left:4px solid var(--brand-500);padding-left:12px;border-radius:2px}
.article-body p{margin:12px 0;color:var(--text-2)}
.article-body img{border-radius:14px;margin:14px 0;box-shadow:var(--shadow)}
.article-body ul,.article-body ol{margin:12px 0 12px 26px;color:var(--text-2)}
.article-body li{margin:4px 0}
.article-body code{background:var(--bg-deep);padding:2px 9px;border-radius:7px;font-size:13px;color:var(--brand-600);font-family:ui-monospace,SFMono-Regular,Consolas,monospace}
.article-body pre{background:var(--bg-deep);padding:18px;border-radius:12px;overflow:auto;margin:14px 0}
.article-body pre code{background:none;padding:0;color:var(--text-2)}
.article-body blockquote{border-left:4px solid var(--brand-500);padding:12px 18px;background:var(--grad-soft);border-radius:0 12px 12px 0;margin:14px 0;color:var(--text-2)}
.article-body table{width:100%;border-collapse:collapse;margin:14px 0}
.article-body th,.article-body td{padding:9px 12px;border:1px solid var(--border)}
.article-body th{background:var(--card-2)}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:16px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.breadcrumb a{color:var(--brand-500)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{opacity:.5}

/* ---------- 表单 ---------- */
.form-box{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px;max-width:470px;margin:40px auto;box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.form-box::before{
  content:'';position:absolute;top:0;left:0;right:0;height:5px;background:var(--grad);
}
.form-box h2{font-size:22px;margin-bottom:6px;color:var(--text);text-align:center;font-weight:800}
.form-box .form-sub{font-size:13px;color:var(--muted);text-align:center;margin-bottom:18px}
.form-box label{display:block;font-size:13px;color:var(--text-2);margin:16px 0 7px;font-weight:700}
.form-box input,.form-box textarea,.form-box select{
  width:100%;padding:12px 15px;border:1.5px solid var(--input-border);border-radius:12px;font-size:14px;
  background:var(--input-bg);color:var(--text);outline:none;transition:all .2s;font-family:inherit;
  box-shadow:inset 0 1px 3px rgba(17,24,39,.06);
}
.form-box input:focus,.form-box textarea:focus,.form-box select:focus{
  border-color:var(--brand-500);box-shadow:var(--glow);background:var(--card);
}.form-box .btn{width:100%;margin-top:20px}
.form-box .form-foot{text-align:center;margin-top:16px;font-size:13px;color:var(--muted)}

/* ---------- 提示条 ---------- */
.flash{padding:13px 16px;border-radius:12px;margin-bottom:16px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px}
.flash::before{content:'';width:8px;height:8px;border-radius:50%;flex-shrink:0}
.flash.ok{background:rgba(5,150,105,.10);color:var(--green);border:1px solid rgba(5,150,105,.25)}
.flash.ok::before{background:var(--green);box-shadow:0 0 0 3px rgba(5,150,105,.2)}
.flash.err{background:rgba(220,38,38,.09);color:var(--red);border:1px solid rgba(220,38,38,.25)}
.flash.err::before{background:var(--red);box-shadow:0 0 0 3px rgba(220,38,38,.2)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:11px 24px;
  background:var(--grad);color:#fff;border:0;border-radius:12px;cursor:pointer;font-size:14px;
  font-weight:700;transition:all .25s;box-shadow:0 5px 16px rgba(99,102,241,.32);font-family:inherit;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(99,102,241,.45);color:#fff}
.btn:active{transform:translateY(0)}
.btn-sm{padding:6px 13px;font-size:12.5px;border-radius:9px;box-shadow:none}
.btn-danger{background:linear-gradient(135deg,#f43f5e,#e11d48);box-shadow:0 5px 14px rgba(225,29,72,.3)}
.btn-danger:hover{box-shadow:0 9px 22px rgba(225,29,72,.42)}
.btn-green{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 5px 14px rgba(5,150,105,.3)}
.btn-green:hover{box-shadow:0 9px 22px rgba(5,150,105,.42)}
.btn-ghost{background:transparent;border:1px solid var(--border-2);color:var(--text-2);box-shadow:none}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--grad-soft);box-shadow:none}

/* ---------- 表格 ---------- */
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:22px;margin-bottom:18px;transition:background .35s,border-color .35s}
.panel h3{font-size:15px;font-weight:800;margin-bottom:14px;color:var(--text);display:flex;align-items:center;gap:8px}
.panel h3::before{content:'';width:4px;height:16px;border-radius:3px;background:var(--grad)}
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th,.tbl td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;color:var(--text)}
.tbl th{background:var(--card-2);color:var(--muted);font-weight:800;white-space:nowrap;font-size:12px;letter-spacing:.3px}
.tbl th:first-child{border-radius:10px 0 0 10px}
.tbl th:last-child{border-radius:0 10px 10px 0}
.tbl tr{transition:background .15s}
.tbl tbody tr:hover td{background:var(--grad-soft)}
.tbl td a{color:var(--brand-500);font-weight:600}
.tbl .row-act{white-space:nowrap;display:flex;gap:6px;align-items:center}

/* ---------- 状态徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 11px;border-radius:20px;font-size:11.5px;font-weight:700}
.badge::before{content:'';width:6px;height:6px;border-radius:50%}
.badge.ok{background:rgba(5,150,105,.12);color:var(--green)}
.badge.ok::before{background:var(--green)}
.badge.warn{background:rgba(217,119,6,.12);color:var(--orange)}
.badge.warn::before{background:var(--orange)}
.badge.err{background:rgba(220,38,38,.12);color:var(--red)}
.badge.err::before{background:var(--red)}
.badge.info{background:rgba(99,102,241,.12);color:var(--brand-500)}
.badge.info::before{background:var(--brand-500)}

/* ---------- 分页 ---------- */
.pager{margin-top:22px;text-align:center;display:flex;gap:7px;justify-content:center;flex-wrap:wrap}
.pager a{
  display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 12px;
  border:1px solid var(--border);border-radius:11px;font-size:13px;background:var(--card);color:var(--text-2);transition:all .2s;font-weight:600;
}
.pager a:hover{border-color:var(--brand-500);color:var(--brand-600);box-shadow:var(--glow)}
.pager a.cur{background:var(--grad);color:#fff;border-color:transparent;font-weight:800;box-shadow:0 4px 14px rgba(99,102,241,.35)}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:auto;background:linear-gradient(180deg,var(--bg-deep),var(--card));
  border-top:1px solid var(--border);padding:30px 0 24px;font-size:13px;color:var(--muted);text-align:center;
  transition:background .35s;
}
.footer .flinks{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 20px;margin-bottom:14px}
.footer .flinks a{color:var(--muted);font-size:13px;font-weight:500;padding:3px 0;border-bottom:1px dashed transparent}
.footer .flinks a:hover{color:var(--brand-500);border-bottom-color:var(--brand-400)}
.footer .copy{opacity:.9;display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap}
.footer .copy a{color:var(--muted)}
.footer .copy a:hover{color:var(--brand-500)}
.footer .foot-line{width:60px;height:3px;border-radius:3px;background:var(--grad);margin:0 auto 14px}

/* ---------- 回到顶部 ---------- */
#backTop{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:14px;
  background:var(--grad);color:#fff;border:0;font-size:19px;cursor:pointer;z-index:90;
  box-shadow:0 10px 26px rgba(99,102,241,.42);opacity:0;transform:translateY(14px) scale(.9);
  transition:all .32s;pointer-events:none;
}
#backTop.show{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
#backTop:hover{transform:translateY(-4px) scale(1.05)}

/* ============================================================
   管理后台
   ============================================================ */
.admin-wrap{display:grid;grid-template-columns:242px 1fr;min-height:100vh}
.admin-side{
  background:linear-gradient(180deg,#0f1327 0%,#171a35 60%,#1d1440 100%);
  color:#a7aecd;padding:0;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto;
}
.admin-side .side-brand{
  display:flex;align-items:center;gap:11px;padding:22px 22px 18px;color:#fff;
}
.admin-side .side-brand .b-logo{
  width:36px;height:36px;border-radius:11px;background:var(--grad);display:inline-flex;align-items:center;
  justify-content:center;font-size:17px;font-weight:800;box-shadow:0 6px 18px rgba(99,102,241,.5);
}
.admin-side .side-brand b{font-size:15px;font-weight:800;letter-spacing:.5px}
.admin-side .side-brand small{display:block;font-size:10.5px;color:#6b7299;font-weight:600;letter-spacing:1px}
.admin-side .side-nav{padding:6px 14px;display:flex;flex-direction:column;gap:3px;flex:1}
.admin-side .nav-group{font-size:10.5px;color:#565e8c;font-weight:800;letter-spacing:1.8px;padding:16px 12px 6px;text-transform:uppercase}
.admin-side .side-nav a{
  display:flex;align-items:center;gap:11px;padding:10px 13px;color:#a7aecd;font-size:13.5px;font-weight:600;
  border-radius:11px;transition:all .2s;position:relative;
}
.admin-side .side-nav a .nav-ico{width:22px;text-align:center;font-size:15px;opacity:.9}
.admin-side .side-nav a:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(3px)}
.admin-side .side-nav a.on{
  background:linear-gradient(90deg,rgba(99,102,241,.32),rgba(139,92,246,.16));color:#fff;
  box-shadow:inset 0 0 0 1px rgba(129,140,248,.35);
}
.admin-side .side-nav a.on::before{
  content:'';position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:4px;background:var(--grad);box-shadow:0 0 12px rgba(139,92,246,.8);
}
.admin-side .side-foot{padding:14px 22px;border-top:1px solid rgba(255,255,255,.08);display:flex;gap:8px;flex-wrap:wrap}
.admin-side .side-foot a{font-size:12.5px;color:#8b93bd;padding:7px 12px;border-radius:9px;background:rgba(255,255,255,.06);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.admin-side .side-foot a:hover{background:rgba(255,255,255,.13);color:#fff}
.admin-main{padding:26px 28px;background:var(--bg);min-width:0}
.admin-top{
  display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;gap:14px;flex-wrap:wrap;
}
.admin-top .at-title h2{font-size:21px;font-weight:800;color:var(--text);display:flex;align-items:center;gap:10px}
.admin-top .at-title small{font-size:13px;color:var(--muted);font-weight:500;display:block;margin-top:2px}
.admin-top .at-right{display:flex;gap:10px;align-items:center}

/* 统计卡片 */
.stat{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}
.stat-card{
  border-radius:var(--radius);padding:20px;color:#fff;position:relative;overflow:hidden;
  display:flex;align-items:center;gap:16px;transition:transform .25s,box-shadow .25s;box-shadow:var(--shadow);
}
.stat-card::after{
  content:'';position:absolute;right:-22px;top:-22px;width:90px;height:90px;border-radius:50%;
  background:rgba(255,255,255,.14);
}
.stat-card::before{
  content:'';position:absolute;right:24px;bottom:-30px;width:60px;height:60px;border-radius:50%;
  background:rgba(255,255,255,.09);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.stat-card.c1{background:linear-gradient(135deg,#6366f1,#8b5cf6)}
.stat-card.c2{background:linear-gradient(135deg,#f59e0b,#f97316)}
.stat-card.c3{background:linear-gradient(135deg,#10b981,#059669)}
.stat-card.c4{background:linear-gradient(135deg,#06b6d4,#3b82f6)}
.stat-card.c5{background:linear-gradient(135deg,#ec4899,#f43f5e)}
.stat-card.c6{background:linear-gradient(135deg,#22d3ee,#10b981)}
.stat-card .sc-ico{
  width:52px;height:52px;border-radius:14px;background:rgba(255,255,255,.2);display:inline-flex;
  align-items:center;justify-content:center;font-size:24px;flex-shrink:0;backdrop-filter:blur(4px);
}
.stat-card b{font-size:30px;font-weight:800;line-height:1.15;display:block;font-variant-numeric:tabular-nums}
.stat-card span{font-size:12.5px;opacity:.92;font-weight:600}

/* 后台表单行 */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.form-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.admin-main label{display:block;font-size:12.5px;color:var(--text-2);margin:14px 0 6px;font-weight:700}
/* 后台 + 面板表单控件（排除 checkbox/radio，兼容无 type 的 input） */
.admin-main input:not([type="checkbox"]):not([type="radio"]),
.admin-main textarea,
.admin-main select,
.panel input:not([type="checkbox"]):not([type="radio"]),
.panel textarea,
.panel select{
  width:100%;padding:11px 14px;border:1.5px solid var(--input-border);border-radius:11px;font-size:14px;
  background:var(--input-bg);color:var(--text);outline:none;transition:all .2s;font-family:inherit;
  box-shadow:inset 0 1px 3px rgba(17,24,39,.06);
}
.admin-main input:not([type="checkbox"]):not([type="radio"]):focus,
.admin-main textarea:focus,
.admin-main select:focus,
.panel input:not([type="checkbox"]):not([type="radio"]):focus,
.panel textarea:focus,
.panel select:focus{
  border-color:var(--brand-500);box-shadow:var(--glow);background:var(--card);
}
.admin-main textarea{resize:vertical;line-height:1.7}
.panel code{background:var(--bg-deep);padding:2px 8px;border-radius:6px;font-size:12px;color:var(--brand-600);font-family:ui-monospace,Consolas,monospace;word-break:break-all}
.admin-main input[type="checkbox"]{width:17px;height:17px;accent-color:var(--brand-600);vertical-align:middle;margin-right:6px}
.admin-main .check-line{display:inline-flex;align-items:center;gap:4px;margin-right:18px;font-size:13.5px;color:var(--text-2);font-weight:600;cursor:pointer}
.admin-main .btn{margin-top:18px}
.panel .form-foot-btn{margin-top:6px}

/* 后台登录 */
.admin-login-body{
  min-height:100vh;display:flex;align-items:center;justify-content:center;background:
  radial-gradient(900px 500px at 20% -10%,rgba(99,102,241,.35),transparent),
  radial-gradient(800px 500px at 110% 20%,rgba(217,70,239,.28),transparent),
  linear-gradient(160deg,#0d1026,#131736 55%,#191239);
}
.admin-login-body .form-box{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#e8eaf6;backdrop-filter:blur(18px);box-shadow:0 24px 70px rgba(0,0,0,.45)}
.admin-login-body .form-box h2{color:#fff}
.admin-login-body .form-box label{color:#b9c0e0}
.admin-login-body .form-box input{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.16);color:#fff}
.admin-login-body .form-box input:focus{border-color:var(--brand-400);box-shadow:0 0 0 3px rgba(129,140,248,.3);background:rgba(255,255,255,.12)}
.admin-login-body .form-box::before{display:none}

/* ---------- 移动端适配 ---------- */
@media(max-width:860px){
  .stat{grid-template-columns:repeat(2,1fr)}
  .admin-wrap{grid-template-columns:1fr}
  .admin-side{position:static;height:auto}
  .admin-side .side-nav{flex-direction:row;flex-wrap:wrap}
  .admin-side .side-nav a{padding:8px 12px;font-size:12.5px}
  .admin-side .nav-group{display:none}
  .admin-side .side-brand{padding:14px 16px}
}
@media(max-width:860px){
  .layout{grid-template-columns:1fr;padding:16px}
  .sidebar{display:none;position:fixed;left:0;top:64px;bottom:0;width:264px;z-index:99;border-radius:0 18px 18px 0;box-shadow:var(--shadow-lg);overflow-y:auto}
  .sidebar.open{display:block}
  .mainnav{display:none;position:fixed;left:0;top:64px;right:0;background:var(--card);flex-direction:column;padding:10px 16px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);z-index:98}
  .mainnav.open{display:flex}
  .btn-menu{display:inline-flex}
  .hero{padding:32px 22px}
  .hero h2{font-size:20px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}
  .hero form{flex-direction:column}
  .hero button{width:100%;padding:13px}
  .form-grid-2{grid-template-columns:1fr}
}
@media(max-width:560px){
  .grid{grid-template-columns:1fr 1fr;gap:10px}
  .card{padding:12px;gap:10px}
  .card .logo-img,.card .logo-fallback{width:40px;height:40px;border-radius:11px;font-size:17px}
  .card h4{font-size:13px}
  .topbar-right .u-link span{display:none}
  .stat{grid-template-columns:1fr 1fr;gap:10px}
  .stat-card{padding:14px}
  .stat-card b{font-size:22px}
  .stat-card .sc-ico{width:38px;height:38px;font-size:18px;border-radius:10px}
  .admin-main{padding:16px}
  .tbl th,.tbl td{padding:9px 8px}
}

/* ---------- 卡片淡入动画 ---------- */
.fade-in{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .fade-in{opacity:1;transform:none}
}

/* ---------- 公告条 ---------- */
.notice-bar{
  background:linear-gradient(90deg,#6366f1,#a855f7);color:#fff;
  font-size:13.5px;padding:8px 0;position:relative;z-index:60;
}
.notice-in{display:flex;align-items:center;gap:8px;justify-content:center}
.notice-ico{flex-shrink:0;font-size:14px}
.notice-txt{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:80%}
[data-theme="dark"] .notice-bar{background:linear-gradient(90deg,#4f46e5,#9333ea)}

/* ---------- 广告位 ---------- */
.ad-slot{
  margin:16px 0;padding:14px;border:1px dashed var(--border-2);border-radius:var(--radius);
  background:var(--card-2);overflow:hidden;text-align:center;
}
.ad-slot img,.ad-slot iframe{max-width:100%;border-radius:8px}
.sidebar .ad-slot{margin:14px 0 0;font-size:12px}
.content .ad-slot{margin:18px 0}