/* fi5 飞舞文章系统 —— 统一紫色主题样式（纯 CSS，无框架） */
:root{
  --pri:#7c3aed; --pri-d:#5b21b6; --pri-l:#ede9fe; --pri-xl:#f5f3ff;
  --pri-2:#a78bfa; --ink:#2b1b4d; --ink-2:#5b5470; --gray:#8b8798;
  --line:#ece8f6; --bg:#faf9ff; --white:#fff; --ok:#16a34a; --warn:#f59e0b; --err:#e11d48;
  --radius:14px; --shadow:0 8px 26px rgba(90,55,180,.10);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg); color:var(--ink); font-size:16px; line-height:1.75;
  -webkit-text-size-adjust:100%;
}
a{color:var(--pri);text-decoration:none;}
a:hover{color:var(--pri-d);}
img{max-width:100%;height:auto;display:block;}
h1,h2,h3,h4{margin:0 0 12px;line-height:1.4;font-weight:700;}
p{margin:0 0 14px;}
.wrap{max-width:1160px;margin:0 auto;padding:0 16px;}
.mt{margin-top:18px;} .mb{margin-bottom:18px;}
.hide{display:none !important;}
.center{text-align:center;}
.gray{color:var(--gray);}
.small{font-size:14px;}
.mt0{margin-top:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-block;padding:10px 20px;border-radius:999px;border:1px solid var(--pri);
  background:var(--pri);color:#fff;font-size:15px;cursor:pointer;transition:.18s;line-height:1.5;
}
.btn:hover{background:var(--pri-d);border-color:var(--pri-d);color:#fff;}
.btn.ghost{background:#fff;color:var(--pri);}
.btn.ghost:hover{background:var(--pri-l);color:var(--pri-d);}
.btn.gray{background:#fff;color:var(--ink-2);border-color:var(--line);}
.btn.gray:hover{background:#f4f1fb;color:var(--ink);}
.btn.danger{background:#fff;color:var(--err);border-color:#fbd0da;}
.btn.danger:hover{background:#fff1f4;}
.btn.sm{padding:5px 14px;font-size:14px;border-radius:999px;}
.btn.block{display:block;width:100%;text-align:center;}
.btn:disabled{opacity:.55;cursor:not-allowed;}

/* ============ 顶部导航 ============ */
.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;}
.topbar .wrap{display:flex;align-items:center;height:66px;gap:14px;}
.logo{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;color:var(--pri-d);letter-spacing:.5px;}
.logo img{height:38px;width:auto;}
.logo span{white-space:nowrap;}
.nav{display:flex;gap:6px;margin-left:auto;align-items:center;flex-wrap:wrap;}
.nav a{padding:8px 14px;border-radius:999px;color:var(--ink-2);font-size:16px;}
.nav a:hover{background:var(--pri-xl);color:var(--pri-d);}
.nav a.on{background:var(--pri-l);color:var(--pri-d);font-weight:700;}
.nav .uinfo{font-size:14px;color:var(--gray);padding-left:8px;}

/* ============ 首页（LOGO + AI 思考中） ============ */
.splash{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1000px 620px at 50% 22%,#f3edff 0%,#faf9ff 55%,#fff 100%);padding:30px;}
.splash-in{text-align:center;max-width:760px;}
.splash-logo{width:190px;max-width:62vw;margin:0 auto 26px;}
.splash-title{font-size:30px;color:var(--pri-d);font-weight:800;letter-spacing:2px;}
.splash-tip{margin-top:20px;font-size:22px;color:var(--pri);letter-spacing:2px;}
.dots i{display:inline-block;width:9px;height:9px;margin-left:5px;border-radius:50%;background:var(--pri);
  animation:blink 1.3s infinite;}
.dots i:nth-child(2){animation-delay:.25s;} .dots i:nth-child(3){animation-delay:.5s;}
@keyframes blink{0%,100%{opacity:.25;transform:translateY(0);}50%{opacity:1;transform:translateY(-4px);}}
.splash-sub{margin-top:34px;color:var(--gray);font-size:16px;}
.splash-btn{margin-top:28px;}
.splash-svc{margin-top:26px;font-size:15px;color:var(--ink-2);}

/* ============ 列表页 ============ */
.page-head{padding:26px 0 8px;}
.page-head h1{font-size:26px;color:var(--pri-d);}
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:14px 0 20px;}
.chip{padding:7px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:15px;}
.chip:hover{border-color:var(--pri-2);color:var(--pri-d);}
.chip.on{background:var(--pri);border-color:var(--pri);color:#fff;font-weight:700;}
.search{display:flex;gap:8px;margin-left:auto;}
.search input{padding:9px 14px;border:1px solid var(--line);border-radius:999px;font-size:15px;min-width:200px;outline:none;}
.search input:focus{border-color:var(--pri-2);}

.list{display:grid;grid-template-columns:1fr;gap:16px;}
.item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;
  display:flex;gap:18px;align-items:flex-start;transition:.2s;box-shadow:0 2px 10px rgba(90,55,180,.04);}
.item:hover{border-color:var(--pri-2);transform:translateY(-2px);box-shadow:var(--shadow);}
.item .thumb{width:170px;flex:0 0 170px;border-radius:10px;overflow:hidden;background:var(--pri-xl);}
.item .thumb img{width:100%;height:110px;object-fit:cover;}
.item .body{flex:1;min-width:0;}
.item h2{font-size:19px;margin:0 0 8px;line-height:1.45;}
.item h2 a{color:var(--ink);}
.item h2 a:hover{color:var(--pri-d);}
.item .sum{color:var(--ink-2);font-size:15px;margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.meta{display:flex;flex-wrap:wrap;gap:12px;color:var(--gray);font-size:14px;align-items:center;}
.tag{display:inline-block;padding:2px 10px;border-radius:999px;background:var(--pri-xl);color:var(--pri-d);font-size:13px;}
.tag.top{background:#fff2d9;color:#b45309;}
.tag.time{background:#eef2ff;color:#4338ca;}
.tag.view{background:#f1f5f9;color:#475569;}
.empty{padding:60px 20px;text-align:center;color:var(--gray);font-size:17px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius);}

/* ============ 文章详情 ============ */
/* 对外展示页（公众号风格）：无导航、无 LOGO、无页脚，返回即关闭 */
.wx-wrap{max-width:720px;margin:0 auto;padding:16px 18px 44px;}
.article.wx{border:0;box-shadow:none;padding:0 0 10px;background:transparent;}
.article.wx h1{font-size:27px;}
.art-close{position:fixed;right:14px;top:14px;width:34px;height:34px;border-radius:50%;
  background:rgba(91,33,182,.85);color:#fff;border:none;font-size:20px;line-height:1;
  cursor:pointer;z-index:60;box-shadow:0 4px 12px rgba(90,55,180,.28);}
.art-close:hover{background:#5b21b6;}
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;box-shadow:0 2px 10px rgba(90,55,180,.04);}
.article h1{font-size:28px;color:var(--ink);line-height:1.45;}
.article .meta{margin-bottom:18px;padding-bottom:14px;border-bottom:1px dashed var(--line);}
.article .cover{margin:0 0 18px;border-radius:12px;overflow:hidden;}
.content{font-size:18px;line-height:1.95;color:#33254f;word-wrap:break-word;}
.content p{margin:0 0 18px;}
.content h2,.content h3{color:var(--pri-d);margin:26px 0 14px;}
.content img{border-radius:10px;margin:14px 0;}
.content video{width:100%;border-radius:10px;margin:14px 0;background:#000;}
.content iframe{width:100%;max-width:100%;min-height:280px;border:0;border-radius:10px;margin:14px 0;}
.content blockquote{margin:18px 0;padding:12px 18px;border-left:4px solid var(--pri);background:var(--pri-xl);color:var(--ink-2);border-radius:0 10px 10px 0;}
.content ul{padding-left:22px;}
.content a{text-decoration:underline;}
.back{margin:22px 0;}

/* ============ 广告位 ============ */
.ad-box{margin:20px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;}
.ad-flag{display:flex;justify-content:space-between;align-items:center;padding:7px 14px;background:var(--pri-xl);
  color:var(--pri-d);font-size:13px;}
.ad-flag b{font-weight:700;}
.ad-body{display:block;position:relative;}
.ad-body img{width:100%;display:block;}
.ad-title{padding:10px 14px;font-size:16px;color:var(--ink);font-weight:700;}
.ad-note{padding:0 14px 12px;color:var(--gray);font-size:14px;}
.ad-ask{display:inline-block;margin:0 14px 14px;padding:6px 16px;border-radius:999px;background:var(--pri);color:#fff;font-size:14px;}
.ad-ask:hover{background:var(--pri-d);color:#fff;}
.ad-empty{margin:20px 0;padding:16px;border:1px dashed var(--line);border-radius:12px;text-align:center;color:#b9b4c9;font-size:14px;}
/* 对外展示页的广告：无边框、无广告位描述，原生融入正文 */
.ad-box.plain{border:0;background:transparent;border-radius:0;box-shadow:none;margin:22px 0;}
.ad-box.plain .ad-body{display:block;}
.ad-box.plain img{border-radius:10px;width:100%;}

/* ============ 留言（公众号风格） ============ */
.cmt{margin-top:34px;padding-top:22px;border-top:1px solid var(--line);}
.cmt-head{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--pri-d);margin-bottom:14px;}
.cmt-head span{font-size:13px;font-weight:400;color:var(--gray);}
.cmt-item{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed #f2eefb;}
.cmt-item:last-child{border-bottom:0;}
.cmt-av{width:40px;height:40px;flex:0 0 40px;border-radius:50%;
  background:linear-gradient(135deg,#a78bfa,#5b21b6);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;}
.cmt-body{flex:1;min-width:0;}
.cmt-name{font-size:15px;color:var(--ink-2);font-weight:700;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.cmt-time{font-size:12px;color:var(--gray);font-weight:400;}
.cmt-text{margin-top:5px;font-size:16px;line-height:1.8;color:var(--ink);word-break:break-word;}
.cmt-reply{margin-top:8px;padding:9px 12px;background:var(--pri-xl);border-radius:10px;
  font-size:14px;color:var(--ink-2);line-height:1.7;}
.cmt-reply b{color:var(--pri-d);}

/* ============ 客服 ============ */
.svc-float{position:fixed;right:18px;bottom:24px;z-index:80;}
.svc-btn{width:58px;height:58px;border-radius:50%;background:var(--pri);color:#fff;border:none;font-size:14px;
  cursor:pointer;box-shadow:0 8px 20px rgba(124,58,237,.35);line-height:1.3;}
.svc-panel{display:none;position:absolute;right:0;bottom:70px;width:250px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:18px;box-shadow:var(--shadow);text-align:center;}
.svc-panel.on{display:block;}
.svc-panel img{width:170px;margin:8px auto 10px;}
.modal{display:none;position:fixed;inset:0;background:rgba(43,27,77,.45);z-index:120;align-items:center;justify-content:center;padding:20px;}
.modal.on{display:flex;}
.modal-box{background:#fff;border-radius:16px;padding:26px;max-width:420px;width:100%;text-align:center;box-shadow:var(--shadow);}
.modal-box h3{color:var(--pri-d);}
.modal-box img{width:200px;margin:12px auto;}

/* ============ 表单 / 卡片 ============ */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 2px 10px rgba(90,55,180,.04);}
.card + .card{margin-top:18px;}
.card h3{font-size:18px;color:var(--pri-d);border-left:4px solid var(--pri);padding-left:10px;margin-bottom:16px;}
.form-row{margin-bottom:16px;}
.form-row label{display:block;margin-bottom:7px;font-size:15px;color:var(--ink-2);font-weight:700;}
.form-row label .req{color:var(--err);}
.input,.select,.textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;font-size:16px;
  font-family:inherit;background:#fff;color:var(--ink);outline:none;}
.input:focus,.select:focus,.textarea:focus{border-color:var(--pri);box-shadow:0 0 0 3px rgba(124,58,237,.12);}
.textarea{min-height:110px;resize:vertical;}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;}
.hint{font-size:13px;color:var(--gray);margin-top:6px;}
.checkline{display:flex;align-items:center;gap:8px;font-size:15px;color:var(--ink-2);}
.checkline input{width:18px;height:18px;}

/* 验证码 */
.cap-wrap{display:flex;gap:10px;align-items:center;flex-wrap:nowrap;}
.cap-wrap .input{flex:1 1 auto;min-width:0;}
.cap-img{height:52px;width:132px;flex:0 0 132px;border:1px solid var(--line);border-radius:10px;cursor:pointer;background:#fff;display:block;}
.cap-tip{font-size:13px;color:var(--gray);margin-top:6px;}

/* ============ 表格 ============ */
.table{width:100%;border-collapse:collapse;font-size:15px;background:#fff;}
.table th,.table td{padding:12px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;}
.table th{background:var(--pri-xl);color:var(--pri-d);font-weight:700;white-space:nowrap;}
.table tr:hover td{background:#fcfbff;}
.table .ops a,.table .ops button{margin-right:8px;font-size:14px;}
.table .ops form{display:inline;}
.tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius);background:#fff;}

/* ============ 分页 ============ */
.pager{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:22px 0 10px;}
.pg{padding:7px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink-2);font-size:15px;}
.pg:hover{border-color:var(--pri-2);color:var(--pri-d);}
.pg.on{background:var(--pri);border-color:var(--pri);color:#fff;font-weight:700;}
.pg.dis{opacity:.45;pointer-events:none;}
.pg-info{color:var(--gray);font-size:14px;margin-left:6px;}

/* ============ 提示 ============ */
.flash{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:15px;}
.flash.ok{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0;}
.flash.err{background:#fff1f2;color:#be123c;border:1px solid #fecdd3;}

/* ============ 后台布局 ============ */
.admin{display:flex;min-height:100vh;}
.side{width:224px;flex:0 0 224px;background:linear-gradient(175deg,#5b21b6,#7c3aed 60%,#8b5cf6);color:#fff;padding:22px 16px;position:sticky;top:0;height:100vh;overflow-y:auto;}
.side .s-logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;margin-bottom:22px;}
.side .s-logo img{height:34px;filter:brightness(0) invert(1);}
.side .s-group{font-size:13px;opacity:.72;margin:16px 0 8px;padding-left:10px;}
.side a{display:block;padding:11px 14px;border-radius:10px;color:#ede9fe;font-size:16px;margin-bottom:4px;}
.side a:hover{background:rgba(255,255,255,.14);color:#fff;}
.side a.on{background:rgba(255,255,255,.22);color:#fff;font-weight:700;}
.side .s-foot{margin-top:22px;padding-top:16px;border-top:1px solid rgba(255,255,255,.2);font-size:13px;opacity:.85;line-height:1.9;}
.side .s-foot a{display:inline;padding:0;color:#fff;text-decoration:underline;background:none;font-size:13px;}
.main{flex:1;min-width:0;padding:22px 26px 60px;}
.main-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px;}
.main-head h1{font-size:24px;color:var(--pri-d);margin:0;}
.main-head .right{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap;}
.mtopbar{display:none;}

/* 统计卡片 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px;}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;}
.stat .n{font-size:28px;font-weight:800;color:var(--pri-d);line-height:1.2;}
.stat .t{font-size:14px;color:var(--gray);margin-top:4px;}
.stat .s{font-size:13px;color:var(--pri);margin-top:6px;}

/* 柱状图 */
.bars{display:flex;align-items:flex-end;gap:6px;height:150px;padding:10px 0;border-bottom:1px solid var(--line);}
.bar{flex:1;background:linear-gradient(180deg,#a78bfa,#7c3aed);border-radius:6px 6px 0 0;min-height:3px;position:relative;}
.bar span{position:absolute;bottom:-24px;left:50%;transform:translateX(-50%);font-size:11px;color:var(--gray);white-space:nowrap;}
.bars-wrap{margin-bottom:34px;}
.legend{display:flex;gap:16px;font-size:13px;color:var(--gray);margin-top:8px;}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:5px;}

/* 编辑器 */
.editor-bar{display:flex;flex-wrap:wrap;gap:6px;padding:10px;background:var(--pri-xl);border:1px solid var(--line);
  border-bottom:none;border-radius:12px 12px 0 0;}
.ed-btn{padding:6px 12px;border:1px solid var(--line);background:#fff;border-radius:8px;font-size:14px;cursor:pointer;color:var(--ink-2);}
.ed-btn:hover{border-color:var(--pri);color:var(--pri-d);background:#fff;}
.editor{min-height:380px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:0 0 12px 12px;
  font-size:17px;line-height:1.9;outline:none;overflow-y:auto;}
.editor:focus{border-color:var(--pri);}
.editor img{max-width:100%;border-radius:8px;}
.editor video{width:100%;border-radius:8px;}
.editor iframe{width:100%;min-height:260px;border:0;}
.ed-count{font-size:13px;color:var(--gray);text-align:right;margin-top:6px;}

/* 上传预览 */
.up{display:flex;gap:10px;align-items:center;flex-wrap:wrap;}
.up img,.up video{max-height:96px;border-radius:8px;border:1px solid var(--line);}
.up .fname{font-size:14px;color:var(--gray);word-break:break-all;}

/* ============ 页脚 ============ */
.foot{margin-top:40px;padding:26px 0;background:#fff;border-top:1px solid var(--line);color:var(--gray);font-size:14px;text-align:center;}
.foot a{color:var(--pri);}

/* ============ 响应式 ============ */
@media (max-width:900px){
  .stats{grid-template-columns:1fr 1fr;}
  .grid2{grid-template-columns:1fr;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .wrap{padding:0 12px;}
  .topbar .wrap{height:auto;padding:10px 0;flex-wrap:wrap;}
  .logo{font-size:19px;}
  .nav{width:100%;margin-left:0;gap:4px;padding-top:6px;}
  .nav a{padding:7px 11px;font-size:15px;}
  .item{flex-direction:column;gap:12px;padding:14px;}
  .item .thumb{width:100%;flex:none;}
  .item .thumb img{height:180px;}
  .item h2{font-size:18px;}
  .article{padding:18px 16px;}
  .article h1{font-size:22px;}
  .content{font-size:17px;}
  .search{margin-left:0;width:100%;}
  .search input{flex:1;min-width:0;}
  .table th,.table td{white-space:nowrap;}
  /* 移动端后台：侧栏变顶部横向导航 */
  .admin{display:block;}
  .side{width:100%;height:auto;position:static;padding:14px 12px;border-radius:0;}
  .side .s-logo{margin-bottom:12px;}
  .side .s-group{display:none;}
  .side .s-nav{display:flex;overflow-x:auto;gap:6px;padding-bottom:4px;}
  .side a{white-space:nowrap;margin-bottom:0;font-size:15px;padding:8px 12px;}
  .side .s-foot{margin-top:12px;}
  .main{padding:16px 12px 60px;}
  .splash-title{font-size:24px;}
  .splash-tip{font-size:19px;}
  .svc-float{right:12px;bottom:16px;}
}