/* ==========================================
   源码演示导航 · 样式表
   简洁商务风，浅色主题
   ========================================== */
:root{
  --c-bg:#f4f6fa;
  --c-white:#fff;
  --c-text:#1f2937;
  --c-text-2:#6b7280;
  --c-text-3:#9ca3af;
  --c-line:#e5e7eb;
  --c-line-2:#f1f3f7;
  --c-primary:#2563eb;
  --c-primary-d:#1d4ed8;
  --c-green:#16a34a;
  --c-green-bg:#ecfdf5;
  --c-yellow:#d97706;
  --c-yellow-bg:#fffbeb;
  --c-gray:#9ca3af;
  --c-gray-bg:#f3f4f6;
  --c-red:#dc2626;
  --c-red-bg:#fef2f2;
  --radius:12px;
  --shadow:0 2px 10px rgba(15,23,42,.06);
  --shadow-hover:0 8px 24px rgba(15,23,42,.10);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font:15px/1.6 "Microsoft YaHei","PingFang SC","Hiragino Sans GB","Source Han Sans SC",
       "Noto Sans CJK SC","WenQuanYi Micro Hei","Helvetica Neue",Arial,sans-serif;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.mono{font-family:Consolas,"SFMono-Regular",Monaco,monospace}

/* ================= 通用组件 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:38px;padding:0 18px;border-radius:8px;border:1px solid transparent;
  font-size:14px;font-weight:500;cursor:pointer;transition:.15s;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d)}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-text)}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-plain{background:#fff;border-color:var(--c-line);color:var(--c-text-2)}
.btn-plain:hover{border-color:var(--c-text-3);color:var(--c-text)}
.btn-disabled{background:#f3f4f6;color:var(--c-text-3);cursor:not-allowed}
.btn-block{width:100%;height:42px}

.alert{padding:11px 15px;border-radius:8px;font-size:14px;margin-bottom:18px}
.alert-err{background:var(--c-red-bg);color:#b91c1c;border-left:3px solid var(--c-red)}
.alert-ok{background:var(--c-green-bg);color:#15803d;border-left:3px solid var(--c-green)}

.empty{
  background:#fff;border:1px dashed var(--c-line);border-radius:var(--radius);
  padding:52px 24px;text-align:center;color:var(--c-text-3);font-size:14px;
}
.no-result{
  background:#fff;border:1px dashed var(--c-line);border-radius:var(--radius);
  padding:44px 24px;text-align:center;color:var(--c-text-3);font-size:14px;margin-top:4px;
}

.tag{
  display:inline-block;padding:2px 9px;border-radius:5px;
  background:rgba(37,99,235,.09);color:var(--c-primary);
  font-size:12px;line-height:18px;white-space:nowrap;
}
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;line-height:18px}
.badge-online{background:var(--c-green-bg);color:var(--c-green)}
.badge-maintenance{background:var(--c-yellow-bg);color:var(--c-yellow)}
.badge-offline{background:var(--c-gray-bg);color:var(--c-gray)}

/* ================= 前台 ================= */
.front-body{display:flex;flex-direction:column;min-height:100vh}

.front-head{background:#fff;border-bottom:1px solid var(--c-line)}
.fh-inner{max-width:1180px;margin:0 auto;padding:0 24px}
.fh-brand{display:flex;align-items:center;gap:14px;padding:24px 0 20px}
.fh-logo{
  width:46px;height:46px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,#2563eb,#4f46e5);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:21px;font-weight:700;letter-spacing:1px;
}
.fh-titles h1{margin:0;font-size:21px;font-weight:600;letter-spacing:.5px}
.fh-titles p{margin:3px 0 0;font-size:13px;color:var(--c-text-2)}
.fh-count{margin-left:auto;font-size:13px;color:var(--c-text-2);white-space:nowrap}
.fh-count strong{color:var(--c-primary);font-size:17px;margin:0 2px}

.fh-notice{background:var(--c-yellow-bg);border-top:1px solid #fde68a}
.notice-inner{display:flex;align-items:center;gap:9px;padding:11px 24px;font-size:13px;color:#92400e}
.notice-icon{
  width:18px;height:18px;border-radius:50%;background:var(--c-yellow);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;
}

.front-main{flex:1;max-width:1180px;width:100%;margin:0 auto;padding:24px}

.toolbar{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:16px 20px;margin-bottom:20px;box-shadow:var(--shadow);
}
.tb-left{display:flex;gap:16px;flex-wrap:wrap;flex:1}
.tb-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.tb-field{display:flex;flex-direction:column;gap:6px}
.tb-field>span{font-size:12px;color:var(--c-text-2)}
.tb-field select,.tb-field input{
  height:38px;padding:0 12px;border:1px solid var(--c-line);border-radius:8px;
  font-size:14px;background:#fff;color:var(--c-text);font-family:inherit;outline:none;transition:.15s;
}
.tb-field select{min-width:180px;cursor:pointer}
.tb-field input{min-width:260px}
.tb-field select:focus,.tb-field input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.tb-hint{font-size:13px;color:var(--c-text-2)}
.tb-reset{
  height:38px;padding:0 16px;border:1px solid var(--c-line);border-radius:8px;
  background:#fff;color:var(--c-text-2);font-size:14px;cursor:pointer;font-family:inherit;transition:.15s;
}
.tb-reset:hover{border-color:var(--c-primary);color:var(--c-primary)}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:18px}
.front-empty{grid-column:1/-1}

.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:.18s;box-shadow:var(--shadow);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#dbe2ec}
.card.is-hidden{display:none}

.card-thumb{position:relative;aspect-ratio:16/9;background:#f1f3f7;overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover}
.card-badge{position:absolute;top:10px;right:10px;box-shadow:0 1px 4px rgba(0,0,0,.12)}

.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1;gap:11px}
.card-title{margin:0;font-size:16px;font-weight:600;line-height:1.4;word-break:break-word}
.card-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.card-remark{font-size:12px;color:var(--c-text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}

.card-reset{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  background:#f8fafc;border:1px solid var(--c-line-2);border-radius:8px;padding:8px 12px;
}
.reset-label{font-size:12px;color:var(--c-text-2)}
.reset-time{font-family:Consolas,Monaco,monospace;font-size:14px;font-weight:600;color:var(--c-primary)}
.reset-none{font-family:inherit;font-weight:400;color:var(--c-text-3);font-size:13px}
.reset-time.is-urgent{color:var(--c-red)}

.card-cred{border:1px solid var(--c-line-2);border-radius:8px;padding:9px 12px;display:flex;flex-direction:column;gap:7px}
.cred-row{display:flex;align-items:center;gap:10px;font-size:13px;min-height:24px}
.cred-key{color:var(--c-text-3);width:32px;flex-shrink:0;font-size:12px}
.cred-val{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--c-text)}
.copy-btn{
  border:1px solid var(--c-line);background:#fff;color:var(--c-text-2);
  border-radius:5px;padding:1px 9px;font-size:12px;cursor:pointer;flex-shrink:0;
  font-family:inherit;transition:.15s;line-height:18px;min-height:22px;
}
.copy-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:#f5f8ff}

.card-actions{display:flex;gap:10px;margin-top:auto;padding-top:3px}
.card-actions .btn{flex:1}

.front-foot{
  border-top:1px solid var(--c-line);background:#fff;padding:22px 24px;text-align:center;
  color:var(--c-text-3);font-size:12.5px;margin-top:28px;
}
.front-foot p{margin:3px 0}
.foot-sub{color:#c9ced8}

.toast{
  position:fixed;left:50%;bottom:40px;transform:translateX(-50%);
  background:rgba(31,41,55,.94);color:#fff;padding:10px 20px;border-radius:8px;
  font-size:14px;z-index:99;box-shadow:0 6px 20px rgba(0,0,0,.2);
  animation:toastIn .2s ease;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%,0)}}

/* ================= 后台 ================= */
.admin-body{background:var(--c-bg);min-height:100vh}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{width:100%;max-width:380px;background:#fff;border-radius:16px;padding:34px 32px;box-shadow:0 10px 40px rgba(15,23,42,.10)}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:26px}
.login-logo{
  width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,#2563eb,#4f46e5);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;
}
.login-brand h1{margin:0;font-size:18px;font-weight:600}
.login-brand p{margin:2px 0 0;font-size:12px;color:var(--c-text-2)}
.login-tip{margin:16px 0 0;font-size:12px;color:var(--c-text-3);text-align:center}

.fld{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.fld>span{font-size:13px;color:var(--c-text-2);font-weight:500}
.fld .req{color:var(--c-red);font-style:normal;margin-left:2px}
.fld .opt{color:var(--c-text-3);font-weight:400;font-size:12px}
.fld input[type=text],.fld input[type=url],.fld input[type=password],.fld select,.fld input[type=file]{
  height:40px;padding:0 12px;border:1px solid var(--c-line);border-radius:8px;
  font-size:14px;font-family:inherit;background:#fff;color:var(--c-text);outline:none;transition:.15s;width:100%;
}
.fld select{cursor:pointer}
.fld input:focus,.fld select:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.fld input[type=file]{height:auto;padding:8px 12px;font-size:13px}
.fld-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.inline-check{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--c-text-2);margin-top:10px;cursor:pointer}

.admin-topbar{
  background:#fff;border-bottom:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;padding:0 26px;height:60px;
  position:sticky;top:0;z-index:10;
}
.at-left{display:flex;align-items:center;gap:11px}
.at-logo{
  width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,#2563eb,#4f46e5);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
}
.at-left strong{display:block;font-size:15px;font-weight:600;line-height:1.3}
.at-left small{display:block;font-size:11.5px;color:var(--c-text-3)}
.at-right{display:flex;align-items:center;gap:20px}
.at-link{font-size:13px;color:var(--c-text-2);transition:.15s}
.at-link:hover{color:var(--c-primary)}
.at-form{margin:0;display:inline}
.at-btn{
  background:none;border:none;padding:0;cursor:pointer;font-family:inherit;
  font-size:13px;color:var(--c-text-2);transition:.15s;
}
.at-btn:hover{color:var(--c-primary)}

.admin-main{max-width:1280px;margin:0 auto;padding:24px 26px 50px}
.admin-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.admin-head h2{margin:0;font-size:19px;font-weight:600}

.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-bottom:20px}
.stat{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:16px 18px;display:flex;flex-direction:column;gap:2px;box-shadow:var(--shadow);
}
.stat-num{font-size:25px;font-weight:700;color:var(--c-primary);line-height:1.2}
.stat-label{font-size:12.5px;color:var(--c-text-2)}
.stat-yellow .stat-num{color:var(--c-yellow)}
.stat-gray .stat-num{color:var(--c-gray)}

.table-wrap{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow-x:auto;box-shadow:var(--shadow)}
.tbl{width:100%;border-collapse:collapse;min-width:900px}
.tbl th{
  background:#fafbfd;text-align:left;padding:12px 14px;font-size:12.5px;font-weight:600;
  color:var(--c-text-2);border-bottom:1px solid var(--c-line);white-space:nowrap;
}
.tbl td{padding:13px 14px;border-bottom:1px solid var(--c-line-2);font-size:13.5px;vertical-align:middle}
.tbl tbody tr:last-child td{border-bottom:none}
.tbl tbody tr:hover{background:#fafcff}
.td-id{color:var(--c-text-3);font-size:12.5px}
.td-name{font-weight:500;color:var(--c-text)}
.td-remark{font-size:12px;color:var(--c-text-3);margin-top:3px;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.td-link{color:var(--c-primary);font-size:12.5px;word-break:break-all}
.td-link:hover{text-decoration:underline}
.td-muted{color:var(--c-text-3);font-size:12.5px}
.op-btns{display:flex;gap:8px;align-items:center;flex-wrap:nowrap;white-space:nowrap}
.op-del-form{display:inline;margin:0}
.op{
  display:inline-block;border:1px solid var(--c-line);background:#fff;border-radius:6px;
  padding:3px 11px;font-size:12.5px;cursor:pointer;font-family:inherit;transition:.15s;
  line-height:20px;white-space:nowrap;flex-shrink:0;
}
.op-edit{color:var(--c-primary);border-color:#c7dbff}
.op-edit:hover{background:#f0f6ff}
.op-del{color:var(--c-red);border-color:#f7c9c9}
.op-del:hover{background:var(--c-red-bg)}

/* ================= 后台存活检测 ================= */
.op-check{color:#0891b2;border-color:#a5e3f0}
.op-check:hover{background:#ecfeff}
.op-check.checking{opacity:.6;cursor:wait}
.check-result{font-size:11.5px;margin-top:4px;line-height:1.5;white-space:nowrap}
.check-ok{color:var(--c-green)}
.check-bad{color:var(--c-red)}
.bulk-check-bar{display:flex;align-items:center;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.bulk-hint{font-size:12.5px;color:var(--c-text-3)}
.bulk-result{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:16px 18px;margin-bottom:16px;box-shadow:var(--shadow);
}
.bulk-loading{font-size:13.5px;color:var(--c-text-2);padding:6px 0}
.bulk-summary{font-size:14px;padding:4px 0 10px}
.bulk-all-ok{color:var(--c-green)}
.bulk-has-bad{color:#b45309}
.bulk-tbl{width:100%;border-collapse:collapse;margin-top:8px}
.bulk-tbl th{text-align:left;padding:8px 10px;font-size:12.5px;color:var(--c-text-2);border-bottom:1px solid var(--c-line);font-weight:600}
.bulk-tbl td{padding:8px 10px;font-size:13px;border-bottom:1px solid var(--c-line-2)}
.bulk-tbl tr:last-child td{border-bottom:none}

.form-main{max-width:860px}
.edit-form{display:flex;flex-direction:column;gap:16px}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.fc-title{
  padding:13px 20px;font-size:14px;font-weight:600;border-bottom:1px solid var(--c-line-2);
  background:#fafbfd;color:var(--c-text);
}
.fc-body{padding:20px}
.thumb-row{display:flex;gap:18px;align-items:flex-start;flex-wrap:wrap}
.thumb-prev{
  width:170px;height:110px;border:1px solid var(--c-line);border-radius:8px;overflow:hidden;
  background:#f8fafc;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.thumb-prev img{width:100%;height:100%;object-fit:cover}
.thumb-none{font-size:12.5px;color:var(--c-text-3)}
.thumb-ctrl{flex:1;min-width:220px}
.form-actions{display:flex;justify-content:flex-end;gap:12px;padding-top:4px}

/* ================= 后台分页 ================= */
.pager{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:16px;padding:12px 18px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--radius);box-shadow:var(--shadow);
}
.pg-info{font-size:13px;color:var(--c-text-2)}
.pg-btns{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.pg{
  display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:32px;
  padding:0 10px;border:1px solid var(--c-line);border-radius:6px;background:#fff;
  color:var(--c-text-2);font-size:13px;transition:.15s;
}
.pg:hover{border-color:var(--c-primary);color:var(--c-primary)}
.pg-cur{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:500}
.pg-cur:hover{color:#fff}

/* ================= 响应式 ================= */
@media (max-width:768px){
  .fh-inner{padding:0 16px}
  .fh-brand{padding:18px 0 16px}
  .fh-count{display:none}
  .notice-inner{padding:10px 16px;font-size:12.5px}
  .front-main{padding:16px}
  .toolbar{flex-direction:column;align-items:stretch;padding:14px 16px}
  .tb-left{flex-direction:column;gap:12px}
  .tb-field select,.tb-field input{min-width:0;width:100%}
  .tb-right{justify-content:space-between}
  .grid{grid-template-columns:1fr;gap:14px}
  .copy-btn{min-height:30px;padding:2px 12px;line-height:24px}
  .cred-row{gap:8px}
  .admin-main{padding:16px 14px 40px}
  .admin-topbar{padding:0 14px;height:56px}
  .fld-row{grid-template-columns:1fr;gap:0}
  .tbl{min-width:0}
}