:root{--pri:#2563eb;--pri-d:#1d4ed8;--bg:#f5f7fb;--card:#fff;--line:#e5e7eb;--txt:#1f2937;--mut:#6b7280;--ok:#16a34a;--bad:#dc2626;--warn:#d97706}
*{box-sizing:border-box}
body{margin:0;font:15px/1.6 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--txt)}
a{color:var(--pri);text-decoration:none}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}
.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:9}
.nav .wrap{display:flex;align-items:center;gap:18px;height:56px;flex-wrap:wrap}
.nav .brand{font-weight:700;font-size:17px}
.nav nav{display:flex;gap:14px;align-items:center;flex-wrap:wrap;font-size:14px;margin-left:auto}

/* ───────────── 右上角：登录用户 + 下拉菜单（个人中心 / 退出） ───────────── */
.me{position:relative;margin-left:-4px}
.mebtn{display:flex;align-items:center;gap:8px;background:#f1f5f9;border:1px solid var(--line);
       border-radius:999px;padding:4px 11px 4px 5px;font:inherit;font-size:14px;color:var(--txt);
       cursor:pointer;max-width:100%}
.mebtn:hover{background:#e2e8f0}
.avatar{width:28px;height:28px;border-radius:50%;background:var(--pri);color:#fff;flex:0 0 auto;
        display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600}
.mename{max-width:230px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.caret{color:var(--mut);font-size:11px;line-height:1}
.memenu{display:none;position:absolute;right:0;top:calc(100% + 8px);min-width:180px;background:#fff;
        border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 30px rgba(15,23,42,.16);
        padding:6px;z-index:60}
.memenu.open{display:block}
.memenu a{display:block;padding:9px 12px;border-radius:7px;color:var(--txt);font-size:14px}
.memenu a:hover{background:#f1f5f9;text-decoration:none}
.memenu a.out{color:var(--bad)}
.memenu a.out:hover{background:#fef2f2}
main{padding:22px 0 60px}
h1{font-size:22px;margin:0 0 16px}
h2{font-size:17px;margin:24px 0 10px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:16px}
.grid{display:grid;gap:14px}
.g4{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(330px,1fr))}
.stat{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px}
.stat b{display:block;font-size:26px;color:var(--pri)}
.stat span{color:var(--mut);font-size:13px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{border-bottom:1px solid var(--line);padding:9px 8px;text-align:left;vertical-align:top}
th{color:var(--mut);font-weight:600;background:#fafbfe}
tr:hover td{background:#fcfdff}
input,select,textarea{width:100%;padding:8px 10px;border:1px solid #cbd5e1;border-radius:7px;font:inherit;background:#fff}
textarea{min-height:70px}
label{display:block;font-size:13px;color:var(--mut);margin:8px 0 3px}
.btn{display:inline-block;background:var(--pri);color:#fff;border:0;padding:9px 16px;border-radius:7px;cursor:pointer;font:inherit}
.btn:hover{background:var(--pri-d)}
.btn.gray{background:#64748b}.btn.gray:hover{background:#475569}
.btn.red{background:var(--bad)}.btn.red:hover{background:#b91c1c}
.btn.sm{padding:5px 10px;font-size:13px}
.bar{background:#e8edf7;border-radius:20px;height:8px;overflow:hidden;min-width:70px}
.bar i{display:block;height:100%;background:var(--ok)}
.tag{display:inline-block;font-size:12px;padding:2px 8px;border-radius:20px;background:#eef2ff;color:var(--pri)}
.tag.ok{background:#dcfce7;color:var(--ok)}
.tag.bad{background:#fee2e2;color:var(--bad)}
.tag.warn{background:#fef3c7;color:var(--warn)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.mut{color:var(--mut);font-size:13px}
.videos{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.vcard{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column}
.vcard .ph{height:130px;background:#0f172a;color:#94a3b8;display:flex;align-items:center;justify-content:center;font-size:34px}
.vcard .bd{padding:12px;flex:1;display:flex;flex-direction:column;gap:8px}
.vcard .t{font-weight:600}
video{width:100%;background:#000;border-radius:8px;max-height:70vh}
.qbox{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}
.opt{display:block;border:1px solid #cbd5e1;border-radius:8px;padding:11px 14px;margin:9px 0;cursor:pointer;background:#fff}
.opt:hover{border-color:var(--pri);background:#f8faff}
.opt.sel{border-color:var(--pri);background:#eef2ff}
.opt.right{border-color:var(--ok);background:#f0fdf4}
.opt.wrong{border-color:var(--bad);background:#fef2f2}
.flash{padding:11px 14px;border-radius:8px;margin-bottom:14px}
.flash.ok{background:#dcfce7;color:#166534}
.flash.bad{background:#fee2e2;color:#991b1b}
.login{max-width:360px;margin:8vh auto}
.login .card{padding:26px}
.chk{display:flex;gap:8px;align-items:flex-start;border:1px solid var(--line);border-radius:8px;padding:9px 11px;margin:7px 0;background:#fff}
.chk input{width:auto;margin-top:4px}
.qlist{max-height:420px;overflow:auto;border:1px solid var(--line);border-radius:8px;padding:8px;background:#fbfcfe}
.thumb{width:64px;height:38px;object-fit:cover;border-radius:4px;vertical-align:middle;margin-right:8px;border:1px solid var(--line);background:#f1f5f9}

/* ───────────── 列表页头部 + 弹窗（新建/编辑表单） ───────────── */
.cardhead{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.listtbl td:first-child{min-width:130px}
/* 机构名本身可点：手机上不用滑到最右也能开编辑窗 */
.linkbtn{background:none;border:0;padding:0;font:inherit;font-weight:600;color:var(--pri);
         cursor:pointer;text-align:left}
.linkbtn:hover{text-decoration:underline}
.modal{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:50;display:none;padding:20px;overflow-y:auto}
.modal.open{display:block}
.modal:target{display:block}            /* 也支持 #m-xxx 直接深链打开 */
.modal .panel{background:#fff;border-radius:12px;max-width:780px;margin:3vh auto;
              padding:18px 20px 20px;box-shadow:0 20px 50px rgba(15,23,42,.3)}
.modal .phead{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.modal .phead b{font-size:17px}
.modal .x{background:none;border:0;color:var(--mut);font-size:18px;line-height:1;
          padding:3px 9px;border-radius:6px;cursor:pointer}
.modal .x:hover{background:#f1f5f9;color:var(--txt)}
.modal h3{font-size:15px;margin:20px 0 4px;padding-top:15px;border-top:1px solid var(--line)}
.modal .grid{margin-top:2px}

/* ───────────── 手机 / 平板适配 ───────────── */
@media (max-width:768px){
  .wrap{padding:0 12px}
  main{padding:14px 0 44px}
  h1{font-size:19px;margin-bottom:12px}
  h2{font-size:16px;margin:18px 0 8px}
  .card{padding:13px;border-radius:8px;margin-bottom:12px;overflow-x:auto}
  .card table{min-width:520px}            /* 表格可横向滑动查看 */
  table{font-size:13px}
  th,td{padding:7px 6px}

  /* 表单：单列排布，触摸区域加大 */
  .g2,.g3,.g4{grid-template-columns:1fr}
  input,select,textarea{padding:10px 12px;font-size:16px}  /* 16px 防 iOS 自动放大 */
  .btn{padding:11px 18px;font-size:15px}
  .btn.sm{padding:8px 12px;font-size:13px}
  .chk{padding:11px 12px;margin:8px 0}

  /* 导航：品牌 + 登录用户在上一行，菜单项换到下一行，不挤 */
  .nav .wrap{height:auto;padding:9px 12px;gap:10px}
  .nav .brand{font-size:16px;flex:1 1 auto}
  .nav nav{gap:12px;font-size:14px;order:3;flex-basis:100%;margin-left:0;justify-content:flex-start}
  .me{order:2;margin-left:0}
  .mename{max-width:120px}
  .memenu{right:0}

  /* 学员端：选项做大，方便点 */
  .qbox{padding:14px;border-radius:8px}
  .opt{padding:14px 12px;margin:9px 0;font-size:15px}
  video{max-height:44vh}
  .videos{grid-template-columns:1fr}
  .vcard .ph{height:150px}
  .stat b{font-size:22px}
  .stat{padding:12px}
  .login{margin:5vh auto}
  .login .card{padding:20px}
  .qlist{max-height:none}

  /* 列表页表格列多，横向滑动查看 */
  .card table.listtbl{min-width:760px}

  /* 弹窗：手机上接近全屏，方便填写 */
  .modal{padding:8px}
  .modal .panel{margin:1vh auto;padding:14px;border-radius:10px}
  .modal .phead b{font-size:16px}
}

/* 极窄屏（iPhone SE 等） */
@media (max-width:400px){
  .wrap{padding:0 10px}
  .card{padding:11px}
  .card table{min-width:460px}
  h1{font-size:18px}
  .btn{padding:10px 15px;font-size:14px}
  .nav nav{gap:10px;font-size:13px}
}