:root{ --blue:#2990ea; --ink:#000; --gray:#333; --dgray:#363b3e; --line:#e1e4e6; --bg:#f4f4f4; --red:#e03939; }
*{box-sizing:border-box}
body{font-family:'Open Sans',-apple-system,Segoe UI,Roboto,'PingFang SC','Microsoft YaHei',sans-serif;
  color:var(--gray);margin:0;background:#fff;line-height:1.5}
.wrap{max-width:860px;margin:0 auto;padding:24px 18px 80px}
h1,h2,h3{font-family:Georgia,'Times New Roman',serif;color:var(--ink);font-weight:700}
h1{font-size:26px;margin:8px 0 2px} h2{font-size:18px;margin:28px 0 10px;border-bottom:2px solid var(--line);padding-bottom:6px}
.sub{color:#50575b;font-size:14px;margin-bottom:18px}
label{display:block;font-size:14px;color:var(--dgray);margin:12px 0 4px;font-weight:600}
input[type=text],input[type=email],input[type=tel],input[type=date],select,textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font-size:15px;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(41,144,234,.15)}
.row{display:flex;gap:12px;flex-wrap:wrap}.row>div{flex:1;min-width:140px}
.btn{background:var(--blue);color:#fff;border:0;padding:11px 20px;border-radius:8px;font-size:15px;cursor:pointer;font-weight:600}
.btn:hover{filter:brightness(.95)} .btn.ghost{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.btn.gray{background:#eef0f2;color:var(--gray)}
.note{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-size:13px;color:#50575b}
.req:after{content:" *";color:var(--red)}
/* 老师头像选班 */
.levelblk{margin:14px 0}
.levelhd{font-weight:700;color:var(--ink);margin:14px 0 8px;font-size:15px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.ccard{border:1.5px solid var(--line);border-radius:12px;padding:12px;cursor:pointer;display:flex;gap:10px;align-items:center;transition:.12s;background:#fff}
.ccard:hover{border-color:var(--blue)}
.ccard.sel{border-color:var(--blue);background:rgba(41,144,234,.07)}
.ccard input{display:none}
.av{width:48px;height:48px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;font-size:15px;object-fit:cover}
img.av{border:1px solid var(--line)}
.cblock{border:1px solid var(--line);border-radius:10px;padding:12px;margin:10px 0}
.ctext{max-height:160px;overflow:auto;white-space:pre-line;font-size:12px;color:#50575b;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:10px;margin-bottom:8px}
.cblock label.chk{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink);font-weight:600}
.cblock input[type=checkbox]{width:18px;height:18px;margin-top:2px;flex-shrink:0}
.ccard .meta{font-size:13px}.ccard .meta b{color:var(--ink);font-size:13px}.ccard .meta span{color:#50575b}
/* 老学员卡 */
.cand{border:1px solid var(--line);border-radius:10px;padding:12px;margin:8px 0;display:flex;justify-content:space-between;align-items:center}
.cand .info b{color:var(--ink)} .cand .info{font-size:14px}
.verifybox{border:2px solid var(--blue);background:rgba(41,144,234,.08);border-radius:12px;padding:16px;margin:10px 0;box-shadow:0 2px 12px rgba(41,144,234,.18)}
.verifybox h3{margin:0 0 6px;color:var(--blue)}
.locked{opacity:.4;pointer-events:none;filter:grayscale(.4)}
#lockhint{display:none;background:#fff3d6;color:#9a6b00;border:1px solid #f0d28a;border-radius:8px;padding:10px 14px;font-size:14px;margin:8px 0;font-weight:600}
.pill{display:inline-block;background:rgba(41,144,234,.12);color:var(--blue);border-radius:20px;padding:2px 10px;font-size:12px;font-weight:600}
details{margin:6px 0;border:1px solid var(--line);border-radius:8px;padding:8px 12px}
details summary{cursor:pointer;font-size:13px;color:#50575b}
.consent{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px}
.consent label.chk{display:flex;gap:10px;align-items:flex-start;font-weight:700;color:var(--ink)}
.consent input[type=checkbox]{width:20px;height:20px;margin-top:2px}
/* admin */
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}
th{color:var(--dgray);background:var(--bg)}
.tag{font-size:12px;padding:2px 8px;border-radius:6px}
.tag.submitted{background:#fff3d6;color:#9a6b00}.tag.paid{background:#dff5e1;color:#1f7a35}
.orig{color:#9aa0a4;font-size:12px;text-decoration:line-through;margin-left:6px}
a{color:var(--blue)}
.topbar{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:6px}