*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f6f7f9;--surface:#fff;--surface2:#fbfcfd;
  --ink:#111827;--body:#4b5563;--muted:#9ca3af;
  --line:#e5e7eb;--line2:#d1d5db;
  --accent:#1d4ed8;--accent-dark:#1e40af;--soft:#eef4ff;--ring:rgba(29,78,216,.13);
  --ok:#059669;--danger:#dc2626;
  --r:12px;--sh:0 1px 2px rgba(16,24,40,.04),0 12px 32px -16px rgba(16,24,40,.18);
}
body{
  min-height:100vh;background:var(--bg);color:var(--body);font-size:15px;line-height:1.75;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;display:grid;place-items:center;padding:32px 20px;
}
.box{width:min(440px,100%);background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r);padding:34px 32px;box-shadow:var(--sh)}
.box.wide{width:min(940px,100%)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);
  font-size:14.5px;letter-spacing:-.01em;margin-bottom:22px}
.mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:var(--accent);color:#fff;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-weight:800;font-size:14px}
h1{font-size:23px;line-height:1.35;color:var(--ink);font-weight:700;letter-spacing:-.02em}
h2{color:var(--ink);font-size:16px;font-weight:700;letter-spacing:-.01em}
.sub{color:var(--muted);font-size:14px;margin-top:6px}
label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin:18px 0 7px}
input,select,textarea{width:100%;padding:11px 13px;border:1px solid var(--line2);border-radius:9px;
  background:#fff;color:var(--ink);font-size:14.5px;font-family:inherit;outline:none;
  transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}
textarea{min-height:130px;resize:vertical;line-height:1.7}
.inline{display:flex;gap:10px}
.inline input{flex:1}
button{font-family:inherit;cursor:pointer;border:0}
.btn{display:block;width:100%;margin-top:24px;padding:11px 18px;border-radius:9px;
  background:var(--accent);color:#fff;font-size:14.5px;font-weight:600;text-align:center;
  text-decoration:none;transition:background .15s}
.btn:hover{background:var(--accent-dark)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line2);margin-top:10px}
.btn.ghost:hover{background:#f9fafb;border-color:#9ca3af}
.send{flex:0 0 auto;padding:0 16px;border-radius:9px;border:1px solid var(--line2);
  background:#fff;color:var(--ink);font-size:13.5px;font-weight:600;white-space:nowrap}
.send:hover{background:#f9fafb}
.send:disabled{opacity:.5;cursor:not-allowed}
.msg{display:none;margin-top:16px;padding:10px 13px;border-radius:9px;font-size:13.5px}
.msg.on{display:block}
.msg.err{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
.msg.ok{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}
.foot{margin-top:18px;text-align:center;font-size:13.5px;color:var(--muted)}
.foot a{color:var(--accent);text-decoration:none;font-weight:500}
.foot a:hover{text-decoration:underline}
.meta{font-size:12.5px;color:var(--muted)}
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-bottom:22px;padding-bottom:15px;border-bottom:1px solid var(--line)}
.top a{color:var(--muted);text-decoration:none;font-size:13.5px;font-weight:500}
.top a:hover{color:var(--accent)}
.subs{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:14px;margin:24px 0}
.subs .sub{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);
  border-radius:var(--r);padding:20px 18px;background:#fff;transition:border-color .15s,box-shadow .15s,transform .15s}
.subs .sub:hover{border-color:#c7d2fe;box-shadow:var(--sh);transform:translateY(-2px)}
.subs .sub .k{font-size:20px;display:block;margin-bottom:10px;color:var(--accent)}
.subs .sub .t{font-weight:700;font-size:15.5px;color:var(--ink);display:block}
.subs .sub .d{color:var(--muted);font-size:12.5px;margin-top:4px;display:block}
.badge{display:inline-block;font-size:11.5px;padding:2px 9px;border-radius:999px;
  background:var(--soft);color:var(--accent);border:1px solid #c7d2fe;margin-left:8px;font-weight:600}
.badge.admin{background:#fffbeb;color:#b45309;border-color:#fde68a}
.empty{border:1px dashed var(--line2);border-radius:var(--r);padding:30px 20px;text-align:center;
  color:var(--muted);font-size:13.5px;line-height:1.9;background:var(--surface2)}
.item{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);
  border-radius:10px;padding:14px 18px;margin-bottom:10px;background:#fff;transition:border-color .15s,box-shadow .15s,transform .15s}
.item:hover{border-color:#c7d2fe;box-shadow:var(--sh);transform:translateX(3px)}
.item .it{font-weight:600;font-size:14.5px;color:var(--ink)}
.item .id2{color:var(--muted);font-size:12.5px;margin-top:3px}
.tag{display:inline-block;font-size:11px;padding:1px 7px;border-radius:5px;margin-right:7px;
  background:var(--soft);color:var(--accent);vertical-align:middle;font-weight:600}
.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th{text-align:left;padding:10px 8px;color:var(--muted);font-weight:600;
  border-bottom:1px solid var(--line);font-size:12.5px;white-space:nowrap}
.tbl td{padding:11px 8px;border-bottom:1px solid #f1f3f5;vertical-align:middle;color:var(--body)}
.tbl tr:hover td{background:#fafbfc}
.act{display:inline-block;padding:5px 10px;border-radius:7px;font-size:12px;font-weight:600;
  border:1px solid var(--line2);background:#fff;color:var(--ink);margin:2px 4px 2px 0}
.act:hover{background:#f9fafb;border-color:#9ca3af}
.act.danger{color:var(--danger);border-color:#fecaca}
.act.danger:hover{background:#fef2f2}
.stats{display:flex;flex-wrap:wrap;gap:28px;margin:22px 0 28px}
.stat{font-size:12.5px;color:var(--muted)}
.stat b{display:block;font-size:24px;color:var(--ink);font-weight:700;margin-bottom:2px;letter-spacing:-.02em}
.post{border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin-bottom:12px;background:#fff}
.post .h{font-size:12.5px;color:var(--muted);margin-bottom:9px;display:flex;align-items:center;gap:4px}
.post .b{font-size:14.5px;line-height:1.85;color:var(--ink);white-space:pre-wrap;word-break:break-word}
.qbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:18px 0}
.qbar select{width:auto;min-width:132px;padding:8px 10px;font-size:13px}
.qbar .chk{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--body);margin:0;font-weight:500}
.qbar .chk input{width:auto}
.qcard{border:1px solid var(--line);border-radius:12px;padding:24px;background:#fff}
.qmeta{font-size:12.5px;color:var(--muted);margin-bottom:12px;display:flex;gap:8px;align-items:center}
.qstem{font-size:16px;color:var(--ink);line-height:1.85;margin-bottom:18px;white-space:pre-wrap}
.opt{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:9px;
  padding:12px 14px;margin-bottom:9px;cursor:pointer;font-size:14.5px;background:#fff;
  transition:border-color .12s,background .12s;color:var(--ink)}
.opt:hover{border-color:#c7d2fe;background:#fafbff}
.opt.sel{border-color:var(--accent);background:var(--soft)}
.opt.ok{border-color:#a7f3d0;background:#ecfdf5}
.opt.bad{border-color:#fecaca;background:#fef2f2}
.opt .k{font-weight:700;color:var(--accent);min-width:16px}
.fb{margin-top:14px;padding:14px;border-radius:9px;font-size:14px;line-height:1.8;display:none}
.fb.on{display:block}
.fb.ok{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}
.fb.bad{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}
.fb b{font-weight:700}
.qfoot{display:flex;gap:10px;margin-top:18px}
.qfoot .btn{margin-top:0;width:auto;padding:10px 22px}
.qstats{display:flex;gap:28px;margin-top:22px;flex-wrap:wrap}
.qstats .stat b{font-size:20px}

body.full{display:block;padding:0}
.shell{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.tb-in{display:flex;align-items:center;gap:20px;height:60px}
.tb-logo{display:flex;align-items:center;gap:9px;font-weight:700;color:var(--ink);
  font-size:15px;text-decoration:none}
.tb-right{display:flex;align-items:center;gap:18px;margin-left:auto;font-size:13.5px}
.tb-right a{color:var(--body);text-decoration:none;font-weight:500}
.tb-right a:hover{color:var(--accent)}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:13px;text-decoration:none}
.layout{display:grid;grid-template-columns:196px 1fr;gap:26px;padding:24px 0 64px;align-items:start}
@media (max-width:840px){.layout{grid-template-columns:1fr}.side{display:none}}
.side{position:sticky;top:84px}
.side .grp{font-size:11.5px;color:var(--muted);font-weight:700;letter-spacing:.08em;
  margin:20px 0 6px;padding-left:12px}
.side .grp:first-child{margin-top:0}
.side a{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:8px;
  color:var(--body);text-decoration:none;font-size:14px}
.side a:hover{background:#eff1f4;color:var(--ink)}
.side a.on{background:var(--soft);color:var(--accent);font-weight:600}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.vcard{text-decoration:none;color:inherit;display:block}
.vcard .cover{aspect-ratio:16/9;border-radius:10px;display:grid;place-items:center;
  font-size:32px;color:#fff;box-shadow:0 1px 3px rgba(16,24,40,.1);
  transition:transform .18s,box-shadow .18s}
.vcard:hover .cover{transform:translateY(-3px);box-shadow:0 12px 26px -12px rgba(16,24,40,.45)}
.vcard .vt{margin-top:9px;font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.45}
.vcard .vd{margin-top:3px;font-size:12.5px;color:var(--muted)}
.c-math{background:linear-gradient(135deg,#60a5fa,#1d4ed8)}
.c-eng{background:linear-gradient(135deg,#c4b5fd,#7c3aed)}
.c-chi{background:linear-gradient(135deg,#fcd34d,#b45309)}
.c-comp{background:linear-gradient(135deg,#5eead4,#0f766e)}
.c-forum{background:linear-gradient(135deg,#f9a8d4,#be185d)}
.c-map{background:linear-gradient(135deg,#93c5fd,#2563eb)}
.c-res{background:linear-gradient(135deg,#cbd5e1,#475569)}
.sec-title{font-size:16px;font-weight:700;color:var(--ink);margin:30px 0 14px}
.sec-title:first-child{margin-top:0}
.phead{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:26px}
.pavatar{width:64px;height:64px;border-radius:50%;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-size:24px;font-weight:800;flex:0 0 auto}
.pname{font-size:19px;font-weight:700;color:var(--ink);line-height:1.4}
.pmeta{font-size:13px;color:var(--muted);margin-top:2px}
.pstats{display:grid;grid-template-columns:repeat(auto-fit,minmax(118px,1fr));gap:12px;margin-top:14px}
.pstat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.pstat b{display:block;font-size:22px;color:var(--ink);font-weight:700;letter-spacing:-.02em}
.pstat span{font-size:12.5px;color:var(--muted)}
.quick{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:14px}
.quick a{display:flex;align-items:center;justify-content:center;padding:14px;border:1px solid var(--line);
  border-radius:11px;background:#fff;text-decoration:none;color:var(--ink);font-size:14px;font-weight:600}
.quick a:hover{border-color:#c7d2fe;background:#fafbff}

.layout main{min-width:0}
.layout main .box{width:auto;max-width:none;margin:0;padding:0;border:0;box-shadow:none;background:transparent}
.layout main .top{display:flex;align-items:center;justify-content:space-between;
  gap:12px;margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--muted)}
.layout main .top a{color:var(--muted);text-decoration:none}
.layout main .top a:hover{color:var(--accent)}
.layout main .top .flink{color:var(--accent)}
.avatar{overflow:hidden}
.avatar img{width:100%;height:100%;object-fit:cover;display:block}
.pavatar{overflow:hidden}
.pavatar img{width:100%;height:100%;object-fit:cover;display:block}
.editrow{display:flex;gap:20px;align-items:center;margin-bottom:8px}
.preview{width:72px;height:72px;border-radius:50%;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-size:26px;font-weight:800;overflow:hidden;flex:0 0 auto}
.preview img{width:100%;height:100%;object-fit:cover}

html{background:#eef1f7}
body{background:transparent}
body::before{content:"";position:fixed;inset:-30%;z-index:-2;pointer-events:none;
  background:radial-gradient(42% 42% at 18% 22%,rgba(37,99,235,.55),transparent 62%),
    radial-gradient(38% 38% at 82% 18%,rgba(124,58,237,.46),transparent 62%),
    radial-gradient(46% 46% at 62% 88%,rgba(13,148,136,.42),transparent 62%),
    radial-gradient(34% 34% at 30% 82%,rgba(245,158,11,.32),transparent 62%);
  filter:blur(26px);animation:bgfloat 22s linear infinite}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:radial-gradient(rgba(17,24,39,.09) 1px,transparent 1px);
  background-size:24px 24px;animation:gridmove 28s linear infinite}
@keyframes bgfloat{
  0%{transform:translate3d(-15%,-11%,0) scale(1.10)}
  25%{transform:translate3d(11%,9%,0) scale(1.24)}
  50%{transform:translate3d(16%,-12%,0) scale(1.12)}
  75%{transform:translate3d(-10%,13%,0) scale(1.21)}
  100%{transform:translate3d(-15%,-11%,0) scale(1.10)}
}
@keyframes gridmove{from{background-position:0 0}to{background-position:24px 24px}}
@media (prefers-reduced-motion:reduce){body::before{animation:none}}

@media (max-width:640px){
  .shell{padding:0 14px}
  .tb-in{height:54px;gap:10px}
  .tb-right{gap:12px}
  .tb-right a:not(.avatar):not(.btn-login){display:none}
  .tb-logo{font-size:14px}
  .layout{padding:14px 0 86px;gap:0}
  .sec-title{font-size:15px;margin:22px 0 10px}
  .cards{grid-template-columns:repeat(2,1fr);gap:12px}
  .vcard .cover{font-size:24px;border-radius:9px}
  .vcard .vt{font-size:13.5px;margin-top:7px}
  .vcard .vd{font-size:11.5px}
  .phead{flex-direction:column;align-items:flex-start;gap:14px;padding:20px}
  .pavatar{width:56px;height:56px;font-size:21px}
  .phead .btn{width:100% !important;margin:0 !important;text-align:center}
  .pstats{grid-template-columns:repeat(2,1fr)}
  .pstat{padding:14px 15px}
  .pstat b{font-size:19px}
  .quick{grid-template-columns:repeat(2,1fr)}
  .tbl{display:block;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}
  .qbar{flex-direction:column;align-items:stretch;gap:9px}
  .qbar select{min-width:0;width:100%}
  .qcard{padding:18px 16px}
  .qstem{font-size:15px}
  .qfoot{flex-direction:column}
  .qfoot .btn{width:100%}
  .box{padding:26px 20px}
  h1{font-size:20px}
  .post{padding:14px}
  .item{padding:13px 15px}
  .box.wide{width:100%}
}
.mnav{display:none}
@media (max-width:840px){
  .mnav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;
    background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-top:1px solid var(--line);
    padding:5px 0 calc(5px + env(safe-area-inset-bottom))}
  .mnav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
    text-decoration:none;color:var(--muted);font-size:11px;padding:3px 0}
  .mnav a .i{font-size:19px;line-height:1}
  .mnav a.on{color:var(--accent);font-weight:600}
}

.fcard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:48px 28px;
  min-height:230px;display:grid;place-items:center;text-align:center;cursor:pointer;
  box-shadow:var(--sh);transition:transform .15s,border-color .15s}
.fcard:hover{transform:translateY(-2px);border-color:#c7d2fe}
.fword{font-size:34px;font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.3}
.fdef{font-size:17px;color:var(--ink);margin-top:16px;line-height:1.7}
.fex{font-size:14px;color:var(--muted);margin-top:12px;line-height:1.7;font-style:italic}
.fbtns{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.gb{padding:13px;border-radius:10px;font-size:14.5px;font-weight:600;
  border:1px solid var(--line2);background:#fff;color:var(--ink);cursor:pointer;transition:.15s}
.gb.b0:hover{background:#fef2f2;border-color:#fecaca;color:#b91c1c}
.gb.b1:hover{background:#fffbeb;border-color:#fde68a;color:#b45309}
.gb.b2:hover{background:#ecfdf5;border-color:#a7f3d0;color:#047857}
@media (max-width:640px){
  .fcard{padding:34px 18px;min-height:200px}
  .fword{font-size:26px}
  .fbtns{gap:8px}
  .gb{padding:12px 6px;font-size:13.5px}
}

.fset{display:flex;align-items:center;gap:10px;margin-top:20px;padding:14px 16px;
  border:1px solid var(--line);border-radius:10px;background:#fff;font-size:13.5px;color:var(--body);flex-wrap:wrap}
.fset input{width:80px;padding:7px 10px;font-size:14px}
.fsave{padding:7px 14px;border-radius:8px;border:1px solid var(--line2);background:#fff;
  color:var(--ink);font-size:13px;font-weight:600;cursor:pointer}
.fsave:hover{background:#f9fafb}

@media (max-width:640px){
  
  .layout main{width:100%;min-width:0}
  h1{font-size:19px;line-height:1.45}
  .sub{font-size:13px}
  .qstats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:14px 0}
  .qstats .stat{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px}
  .qstats .stat b{font-size:19px}
  .qstats .stat span{font-size:11.5px}
  .fcard{padding:30px 18px;min-height:170px;border-radius:12px}
  .fword{font-size:26px}
  .fback{font-size:15px}
  .fbtns{grid-template-columns:1fr 1fr;gap:10px}
  .gb{padding:15px 8px;font-size:15px;border-radius:10px}
  .fset{padding:12px 13px;gap:8px}
  .fset input{width:64px}
  .item{padding:13px 15px;margin-bottom:9px}
  .item .it{font-size:14px}
  .item .id2{font-size:12px}
  .post{padding:13px 14px}
  .post .b{font-size:14px}
  .tbl th,.tbl td{padding:8px 6px;font-size:12.5px}
  .empty{padding:24px 16px;font-size:13px}
  .box{padding:22px 16px;border-radius:12px}
  .qstem{font-size:15px;line-height:1.8}
  .opt{padding:12px 13px;font-size:14px}
}

.fshow{width:100%;margin-top:16px;padding:14px;border-radius:10px;border:1px dashed #c7d2fe;
  background:#fff;color:var(--accent);font-weight:600;font-size:15px;cursor:pointer;transition:.15s}
.fshow:hover{background:var(--soft);border-style:solid}
@media (max-width:640px){.fshow{padding:16px;font-size:16px}}

.fhead{text-align:center}
.fphon{font-size:15px;color:var(--muted);margin-top:6px;font-family:ui-monospace,Consolas,monospace}
.fbody{margin-top:18px;text-align:left;border-top:1px solid var(--line);padding-top:16px;max-height:44vh;overflow:auto;-webkit-overflow-scrolling:touch}
.fsec + .fsec{margin-top:18px}
.fsec-t{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}
.fdef{font-size:16px;line-height:1.95;color:var(--ink);white-space:pre-wrap}
.fex{font-size:14.5px;line-height:1.95;color:var(--body);white-space:pre-wrap}
.fmn{font-size:14px;line-height:1.95;color:var(--body);white-space:pre-wrap;
  background:#fbfcfd;border:1px solid var(--line);border-radius:8px;padding:12px 14px}
@media (max-width:640px){
  .fdef{font-size:15px}
  .fex{font-size:13.5px}
  .fmn{font-size:13px;padding:10px 12px}
}

.fstart-row{display:flex;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap}
.fstart-row input{width:90px;padding:10px 12px;font-size:16px;text-align:center}
.fstart{padding:11px 26px;border-radius:9px;border:0;background:var(--accent);color:#fff;
  font-size:15px;font-weight:600;cursor:pointer}
.fstart:hover{background:var(--accent-dark)}
.gb.b1:hover{background:#fffbeb;border-color:#fde68a;color:#b45309}
@media (max-width:640px){.fstart-row input{width:80px}}

.fcard{position:relative}
.fbtns{margin-top:16px;position:relative;z-index:2}
.fshow{position:relative;z-index:2}
@media (max-width:640px){
  .fcard{padding:26px 16px 22px}
  .fbtns{margin-top:14px}
}

.fsum{list-style:none;cursor:pointer;outline:none}
.fsum::-webkit-details-marker{display:none}
.fmore{font-size:12.5px;color:var(--accent);margin-top:10px;font-weight:600}
details[open] .fmore{display:none}
.fbtns{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
details[open] + .fbtns{margin-top:16px}

@media (max-width:840px){
  .mnav{display:flex !important;position:fixed;left:0;right:0;bottom:0;width:100%;
    box-sizing:border-box;z-index:60;background:rgba(255,255,255,.97);
    backdrop-filter:blur(12px);border-top:1px solid var(--line);
    padding:6px 0 calc(6px + env(safe-area-inset-bottom))}
  .mnav a{flex:1 1 0;min-width:0;display:flex;flex-direction:column;align-items:center;gap:3px;
    text-decoration:none;color:var(--muted);font-size:11px;padding:4px 0}
  .mnav a .i{font-size:19px;line-height:1}
  .mnav a.on{color:var(--accent);font-weight:600}
  body.full{padding-bottom:78px}
}
@media (max-width:640px){
  .shell{padding:0 18px}
  .layout{padding:12px 0 96px}
  .layout main{width:100%}
  .layout main .box{padding:0;margin:0}
}

html{max-width:100%}
body{max-width:100%}
.layout main{min-width:0;max-width:100%}
.box,.box.wide{max-width:100%}
.qstats{flex-wrap:wrap}
.fset{max-width:100%;box-sizing:border-box}
.fset .meta{flex-basis:100%}
.fcard{max-width:100%;box-sizing:border-box}
.fword{max-width:100%;overflow-wrap:anywhere}
.fdef,.fex,.fmn{overflow-wrap:anywhere}
@media (max-width:840px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .fbtns{grid-template-columns:repeat(3,minmax(0,1fr))}
}

.shell.layout{padding-left:22px;padding-right:22px}
@media (max-width:840px){
  .shell.layout{padding-left:18px;padding-right:18px}
}
@media (max-width:640px){
  .shell.layout{padding-left:16px;padding-right:16px;padding-top:14px;padding-bottom:92px}
}

.ftabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 12px}
.f-tab{font-size:13px;padding:7px 14px;border-radius:999px;border:1px solid var(--line2);
  background:#fff;color:var(--body);text-decoration:none}
.f-tab:hover{border-color:#c7d2fe;color:var(--accent)}
.f-tab.on{background:var(--soft);border-color:#c7d2fe;color:var(--accent);font-weight:600}
.fsearch{display:flex;gap:8px;margin-bottom:16px}
.fsearch input{flex:1}
.fsearch button{padding:0 18px;border-radius:9px;border:1px solid var(--line2);background:#fff;
  font-size:14px;font-weight:600;cursor:pointer}
.fsearch button:hover{background:#f9fafb}
.lrow{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:8px}
.lrow summary{display:flex;align-items:center;gap:10px;padding:13px 15px;cursor:pointer;list-style:none}
.lrow summary::-webkit-details-marker{display:none}
.lw{font-weight:600;color:var(--ink);font-size:14.5px;min-width:100px}
.lphon{color:var(--muted);font-size:12.5px;font-family:ui-monospace,monospace}
.lm{flex:1;color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ls{font-size:11.5px;padding:2px 9px;border-radius:999px;font-weight:600;flex:0 0 auto}
.ls.n{background:#f3f4f6;color:#6b7280}
.ls.l{background:#eff6ff;color:#1d4ed8}
.ls.g{background:#ecfdf5;color:#047857}
.ls.w{background:#fff7ed;color:#c2410c}
.ld{font-size:12px;color:var(--muted);min-width:56px;text-align:right;flex:0 0 auto}
.ldet{padding:2px 15px 14px;border-top:1px solid var(--line);margin-top:2px}
.lmeta{font-size:12px;color:var(--muted);margin:10px 0}
.lops{margin-top:10px}
.lops button{font-size:13px;padding:8px 14px;border-radius:8px;border:1px solid var(--line2);
  background:#fff;color:var(--ink);cursor:pointer}
.lops button:hover{background:#fef2f2;border-color:#fecaca;color:#b91c1c}
@media (max-width:640px){
  .lw{min-width:auto;font-size:14px}
  .lphon{display:none}
  .lm{font-size:12.5px}
  .ld{display:none}
  .fsearch button{padding:0 14px}
}

.lk-learned{margin-left:20px;border-left:3px solid #c7d2fe;background:#fbfcff}
.lk-learned:hover{background:var(--soft)}
.lk-learned .it{font-size:13.5px;color:var(--accent)}
@media (max-width:640px){.lk-learned{margin-left:12px}}

body::before{content:"";position:fixed;inset:-30%;z-index:0;pointer-events:none;
  background:radial-gradient(42% 42% at 18% 22%,rgba(37,99,235,.55),transparent 62%),
    radial-gradient(38% 38% at 82% 18%,rgba(124,58,237,.46),transparent 62%),
    radial-gradient(46% 46% at 62% 88%,rgba(13,148,136,.42),transparent 62%),
    radial-gradient(34% 34% at 30% 82%,rgba(245,158,11,.32),transparent 62%);
  filter:blur(26px);animation:bgfloat 22s linear infinite}
body::after{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(rgba(17,24,39,.09) 1px,transparent 1px);
  background-size:24px 24px;animation:gridmove 28s linear infinite}
body{background:transparent}
.layout,body>.box{position:relative;z-index:1}
.topbar{z-index:50}
.mnav{z-index:60}

.board{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-bottom:6px}
.bcard{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.bcard b{display:block;font-size:26px;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.2}
.bcard span{font-size:12.5px;color:var(--muted)}
.heat{display:grid;grid-template-rows:repeat(7,12px);grid-auto-flow:column;grid-auto-columns:12px;
  gap:3px;margin-top:12px;overflow-x:auto;padding-bottom:4px}
.heat i{width:12px;height:12px;border-radius:3px;background:#eceff4;display:block}
.heat i.l1{background:#c7d2fe}
.heat i.l2{background:#93c5fd}
.heat i.l3{background:#3b82f6}
.heat i.l4{background:#1d4ed8}
.heat-legend{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);margin-top:8px}
.heat-legend i{width:11px;height:11px;border-radius:3px;display:inline-block}

.fshuffle{margin-top:10px}
.fshuffle button{width:100%;padding:11px;border-radius:9px;border:1px dashed #c7d2fe;
  background:#fff;color:var(--accent);font-size:14px;font-weight:600;cursor:pointer}
.fshuffle button:hover{background:var(--soft);border-style:solid}

.sitefoot{margin-top:34px;padding:20px 0 28px;text-align:center;font-size:12.5px;
  color:var(--muted);line-height:1.9;border-top:1px solid var(--line)}
.sitefoot a{color:var(--muted);text-decoration:none}
.sitefoot a:hover{color:var(--accent)}
.sitefoot .sf1{font-size:12px}
@media (max-width:840px){.sitefoot{padding-bottom:92px}}

.post .rp{font-size:12px;color:var(--muted);text-decoration:none;margin-left:10px;
  border-bottom:1px dotted var(--muted)}
.post .rp:hover{color:#dc2626;border-color:#dc2626}

.fnotice{background:#fffbeb;border:1px solid #fde68a;color:#92400e;border-radius:9px;
  padding:11px 14px;font-size:13.5px;margin:14px 0}
.flink{background:none;border:0;color:var(--accent);font-size:13px;cursor:pointer;
  text-decoration:underline;padding:0 4px}
.gb.b3{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8}
.gb.b4{background:#fff;color:var(--muted)}
.fexbox{margin-top:14px;font-size:13px}
.fexbox summary{cursor:pointer;color:var(--accent);font-size:13px;margin-bottom:8px}

.tblwrap{overflow-x:auto}
.tbl td{vertical-align:middle}
.dim{color:#9aa6b8;font-size:12px}
.ntext{display:block;margin-top:6px;font-size:12.5px;color:#b45309;
  background:#fffbeb;border:1px solid #fde68a;border-radius:6px;padding:4px 8px}
.nform2{display:flex;gap:6px;align-items:center}
.nform2 input{flex:1;min-width:120px;padding:6px 9px;border:1px solid var(--line2);
  border-radius:7px;font-size:12.5px;font-family:inherit}

.ic{display:inline-flex;align-items:center;justify-content:center}
.ic svg{width:100%;height:100%;display:block}
.vcard .cover .ic{color:#fff;opacity:.96}
.side-item .ic{color:currentColor;opacity:.8}
.side-item.on .ic{opacity:1}

.vcard .cover{border-radius:16px}
.vcard .cover .ic{transform:scale(1.02)}
.side-item .ic{opacity:.7}
.side-item.on .ic{opacity:1}

.sitefoot a + a{margin-left:14px}
@media (max-width:640px){.sitefoot a + a{margin-left:8px}}

.sitefoot a + a{margin-left:16px}
@media (max-width:640px){.sitefoot a + a{margin-left:10px}}

.chap{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.04em;
  margin:20px 0 8px;padding-left:10px;border-left:3px solid #c7d2fe}
.chap:first-of-type{margin-top:6px}



.ntc{background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:10px;padding:14px 16px;margin-bottom:12px}
.ntc.warn{border-left-color:#f59e0b;background:#fffdf5}
.ntc.good{border-left-color:#10b981;background:#f7fefb}
.ntc .nt{font-weight:600;color:var(--ink);font-size:15px;margin-bottom:6px}
.ntc .ndt{font-weight:400;color:var(--muted);font-size:12px;margin-left:10px}
.ntc .nb{font-size:14px;color:var(--body);line-height:1.9;white-space:pre-wrap}
.ntrow{border-bottom:1px solid var(--line);padding:12px 0}
.ntrow .nh{display:flex;gap:10px;align-items:baseline;margin-bottom:6px}
.ntrow .ndt{font-size:12px;color:var(--muted)}
.ntrow .nb{font-size:13px;color:var(--muted);margin-bottom:6px}
.nform label{display:block;font-size:13px;color:var(--muted);margin:12px 0 6px}
.nform input[type=text],.nform textarea,.nform select,.nform input:not([type]){
  width:100%;box-sizing:border-box;padding:10px 12px;border:1px solid var(--line2);
  border-radius:8px;font-size:14px;font-family:inherit}
.nform textarea{line-height:1.8;resize:vertical}
.nform .btn{margin-top:16px}


.era{font-size:12.5px;color:var(--muted);font-weight:700;letter-spacing:.08em;
  margin:20px 0 8px}
.item .ok{font-size:11px;background:#ecfdf5;color:#047857;padding:1px 7px;
  border-radius:999px;margin-left:6px}
.item .todo{font-size:11px;background:#f3f4f6;color:#9ca3af;padding:1px 7px;
  border-radius:999px;margin-left:6px}
.wy-body{font-family:"Songti SC","SimSun",serif;font-size:16.5px;line-height:2.15;
  color:var(--ink);margin-top:8px}
.wy-body p{margin:0 0 10px;text-indent:2em}
.wy-tr{margin-top:22px;border-top:1px solid var(--line);padding-top:16px}
.wy-tr summary{cursor:pointer;font-weight:600;color:var(--accent);font-size:14px;
  margin-bottom:10px}
.wy-tr div{font-size:14.5px;line-height:1.95;color:var(--body)}
.wy-tr p{margin:0 0 9px}
.wy-note{margin-top:22px;background:#fbfcff;border:1px solid #e0e7ff;border-radius:10px;
  padding:14px 16px}
.wy-note .t{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.08em;
  margin-bottom:8px}
.wy-note li{font-size:14px;line-height:1.9;color:var(--ink)}
.wyform label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
.wyform input,.wyform textarea{width:100%;box-sizing:border-box;padding:10px 12px;
  border:1px solid var(--line2);border-radius:8px;font-size:14px;font-family:inherit}
.wyform textarea{line-height:1.8;resize:vertical}
.wyform .btn{margin-top:18px}

.wy-sec{margin-top:22px;border-top:1px solid var(--line);padding-top:16px}
.wy-sec .t{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.08em;margin-bottom:8px}
.wy-sec li{font-size:14.5px;line-height:1.95;color:var(--body);margin:6px 0}

.wx{display:inline-block;font-size:11px;background:#fef3c7;color:#92400e;
  padding:1px 7px;border-radius:999px;margin-left:8px;vertical-align:2px}


.cbox{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.cbox .cl{width:64px;color:var(--muted);flex:0 0 auto}
.cbox .cv{color:var(--ink);word-break:break-all}
.cform{margin-top:22px}
.cform label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}
.cform input,.cform textarea{width:100%;box-sizing:border-box;padding:10px 12px;
  border:1px solid var(--line2);border-radius:8px;font-size:14px;font-family:inherit}
.cform textarea{line-height:1.8;resize:vertical}
.cform .btn{margin-top:16px}


.tblwrap{overflow-x:auto}
.tbl td{vertical-align:middle}
.dim{color:#9aa6b8;font-size:12px}
.ntext{display:block;margin-top:6px;font-size:12.5px;color:#b45309;
  background:#fffbeb;border:1px solid #fde68a;border-radius:6px;padding:4px 8px}
.nform2{display:flex;gap:6px;align-items:center}
.nform2 input{flex:1;min-width:120px;padding:6px 9px;border:1px solid var(--line2);
  border-radius:7px;font-size:12.5px;font-family:inherit}