/* ============================================================
   智阅云 · 设计系统基础样式
   ============================================================ */
:root{
  --brand:#4f46e5;
  --brand-2:#7c3aed;
  --brand-3:#06b6d4;
  --brand-soft:#eef2ff;
  --brand-line:#dfe3ff;
  --grad:linear-gradient(135deg,#5b5bf0 0%,#7c3aed 55%,#a855f7 100%);
  --grad-soft:linear-gradient(135deg,#eef2ff 0%,#f5f3ff 100%);

  --ok:#10b981;  --ok-soft:#e8faf3;  --ok-line:#a7f3d0;
  --warn:#f59e0b; --warn-soft:#fff7e6; --warn-line:#fde68a;
  --bad:#ef4444;  --bad-soft:#fef2f2;  --bad-line:#fecaca;
  --info:#0ea5e9; --info-soft:#eff8ff;

  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --muted-2:#94a3b8;
  --line:#e7ebf3;
  --line-2:#f1f4f9;
  --bg:#f4f6fb;
  --card:#ffffff;

  --r-xs:6px; --r-sm:9px; --r:13px; --r-lg:18px; --r-xl:24px;
  --sh-1:0 1px 2px rgba(15,23,42,.04),0 1px 2px rgba(15,23,42,.04);
  --sh-2:0 6px 20px rgba(15,23,42,.06);
  --sh-3:0 18px 44px rgba(15,23,42,.12);
  --sidebar-w:250px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  font-size:14.5px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{opacity:.86}
h1,h2,h3,h4{margin:0;font-weight:750;letter-spacing:-.01em}
h1{font-size:20px}
h2{font-size:16px}
h3{font-size:14.5px}
p{margin:0 0 8px}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
.ico{flex:none;display:inline-block;vertical-align:-3px}

/* ---------- 工具类 ---------- */
.muted{color:var(--muted)}
.small{font-size:12.8px}
.tiny{font-size:12px}
.bold{font-weight:700}
.center{text-align:center}
.right{text-align:right}
.nowrap{white-space:nowrap}
.flex{display:flex;align-items:center;gap:10px}
.between{display:flex;align-items:center;justify-content:space-between;gap:10px}
.wrap{flex-wrap:wrap}
.grow{flex:1;min-width:0}
.mt4{margin-top:4px}.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.mb0{margin-bottom:0}.mb8{margin-bottom:8px}.mb16{margin-bottom:16px}
.hide{display:none !important}
.ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g5{grid-template-columns:repeat(5,minmax(0,1fr))}
@media(max-width:1080px){.g5,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.g2,.g3,.g4,.g5{grid-template-columns:minmax(0,1fr)}}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:18px 20px;
  margin-bottom:16px;
}
.card.tight{padding:14px 16px}
.card.flush{padding:0;overflow:hidden}
.card-h{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin:-18px -20px 14px;padding:14px 20px;border-bottom:1px solid var(--line-2);
}
.card.tight .card-h{margin:-14px -16px 12px;padding:12px 16px}
.card-h h2{display:flex;align-items:center;gap:8px;font-size:15.5px}
.card-h h2 .ico{color:var(--brand)}
.card-h .sub{font-size:12.8px;color:var(--muted)}
.card-h .acts{display:flex;gap:8px;align-items:center;flex-wrap:wrap}

.sec-title{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:750;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin:22px 0 10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 16px;border-radius:var(--r);border:1px solid transparent;
  background:var(--grad);color:#fff;font-weight:650;font-size:14px;
  cursor:pointer;white-space:nowrap;transition:.16s;box-shadow:0 4px 12px rgba(79,70,229,.22);
  text-decoration:none;line-height:1.35;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 7px 18px rgba(79,70,229,.28);opacity:1}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn.gray{background:#fff;color:var(--ink-2);border-color:var(--line);box-shadow:var(--sh-1)}
.btn.gray:hover{border-color:#cfd6e6;box-shadow:var(--sh-2)}
.btn.soft{background:var(--brand-soft);color:var(--brand);border-color:var(--brand-line);box-shadow:none}
.btn.soft:hover{background:#e5e9ff;box-shadow:none}
.btn.danger{background:#fff;color:var(--bad);border-color:var(--bad-line);box-shadow:none}
.btn.danger:hover{background:var(--bad-soft)}
.btn.ghost{background:transparent;color:var(--muted);box-shadow:none;border-color:transparent}
.btn.ghost:hover{background:var(--line-2);color:var(--ink-2)}
.btn.ok{background:linear-gradient(135deg,#0fb87f,#10b981)}
.btn.lg{padding:12px 22px;font-size:15.5px;border-radius:14px}
.btn.sm{padding:6px 12px;font-size:13px;border-radius:var(--r-sm);gap:5px}
.btn.block{width:100%}
.btn-row{display:flex;gap:10px;flex-wrap:wrap}
.btn-row.center{justify-content:center}

.ico-btn{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);cursor:pointer;transition:.15s;
}
.ico-btn:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft)}

/* ---------- 表单 ---------- */
.field{display:block;margin-bottom:2px}
.field>span{display:block;font-size:12.8px;font-weight:650;color:var(--ink-2);margin-bottom:6px}
.field>span i{color:var(--bad);font-style:normal;margin-left:2px}
.input,.select,.textarea{
  width:100%;padding:10px 13px;border:1px solid var(--line);border-radius:var(--r);
  background:#fbfcfe;transition:.16s;outline:none;font-size:14px;color:var(--ink);
}
.input:focus,.select:focus,.textarea:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(79,70,229,.12)}
.input::placeholder,.textarea::placeholder{color:var(--muted-2)}
.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;padding-right:34px}
.textarea{min-height:88px;resize:vertical}
.help{font-size:12.2px;color:var(--muted-2);margin-top:5px}
.form-grid{display:grid;gap:14px 16px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:720px){.form-grid{grid-template-columns:minmax(0,1fr)}}

.search-box{position:relative;flex:1;min-width:150px}
.search-box .ico{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted-2)}
.search-box .input{padding-left:38px}

.switch{display:inline-flex;align-items:center;gap:9px;cursor:pointer;user-select:none}
.switch input{display:none}
.switch i{width:42px;height:24px;border-radius:20px;background:#d8dfeb;position:relative;transition:.2s;flex:none}
.switch i::after{content:"";position:absolute;top:2.5px;left:2.5px;width:19px;height:19px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch input:checked+i{background:var(--brand)}
.switch input:checked+i::after{left:20.5px}

/* ---------- 过滤条 ---------- */
.filter-bar{
  display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:14px 16px;margin-bottom:16px;box-shadow:var(--sh-1);
}
.filter-bar .f{display:flex;flex-direction:column;gap:5px;min-width:130px}
.filter-bar .f>span{font-size:12.2px;font-weight:650;color:var(--muted)}
.filter-bar .f .input,.filter-bar .f .select{padding:8px 12px;font-size:13.5px}

/* ---------- 标签 / 徽标 ---------- */
.tag{display:inline-flex;align-items:center;gap:4px;padding:2px 9px;border-radius:20px;font-size:12.2px;font-weight:650;line-height:1.7}
.tag.ok{background:var(--ok-soft);color:#047857;border:1px solid var(--ok-line)}
.tag.warn{background:var(--warn-soft);color:#b45309;border:1px solid var(--warn-line)}
.tag.bad{background:var(--bad-soft);color:#b91c1c;border:1px solid var(--bad-line)}
.tag.gray{background:var(--line-2);color:var(--muted);border:1px solid var(--line)}
.tag.brand{background:var(--brand-soft);color:var(--brand);border:1px solid var(--brand-line)}
.pill{display:inline-flex;align-items:center;gap:5px;padding:4px 11px;border-radius:20px;background:var(--line-2);color:var(--ink-2);font-size:12.5px;font-weight:600}
.dot{width:7px;height:7px;border-radius:50%;background:currentColor;flex:none}

/* ---------- 统计卡 ---------- */
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:16px 18px;
  box-shadow:var(--sh-1);position:relative;overflow:hidden;transition:.18s;
}
.stat:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.stat .k{font-size:12.6px;color:var(--muted);font-weight:650;display:flex;align-items:center;gap:6px}
.stat .v{font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1.25;margin-top:6px}
.stat .v small{font-size:14px;font-weight:600;color:var(--muted-2);margin-left:3px}
.stat .d{font-size:12.3px;color:var(--muted-2);margin-top:2px}
.stat .bgi{position:absolute;right:-6px;bottom:-10px;opacity:.08;color:var(--brand)}
.stat.ok .bgi{color:var(--ok)}.stat.warn .bgi{color:var(--warn)}.stat.bad .bgi{color:var(--bad)}
.stat.accent{background:var(--grad);border-color:transparent;color:#fff}
.stat.accent .k,.stat.accent .d{color:rgba(255,255,255,.8)}
.stat.accent .bgi{color:#fff;opacity:.16}
.v.ok{color:var(--ok)}.v.warn{color:var(--warn)}.v.bad{color:var(--bad)}.v.brand{color:var(--brand)}
.stat.accent .v{color:#fff}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.tb{width:100%;border-collapse:separate;border-spacing:0;font-size:13.6px}
table.tb th{
  text-align:left;font-weight:700;color:var(--muted);background:#fafbfe;
  padding:11px 14px;border-bottom:1px solid var(--line);white-space:nowrap;font-size:12.6px;
}
table.tb td{padding:12px 14px;border-bottom:1px solid var(--line-2);vertical-align:middle}
table.tb tbody tr{transition:.14s}
table.tb tbody tr:hover{background:#fafbff}
table.tb tbody tr:last-child td{border-bottom:0}
table.tb td.num,table.tb th.num{text-align:right;font-variant-numeric:tabular-nums}

/* ---------- 进度条 ---------- */
.bar{height:8px;border-radius:20px;background:var(--line-2);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:20px;background:var(--grad);transition:width .5s}
.bar.sm{height:6px}
.bar>i.ok{background:linear-gradient(90deg,#10b981,#34d399)}
.bar>i.warn{background:linear-gradient(90deg,#f59e0b,#fbbf24)}
.bar>i.bad{background:linear-gradient(90deg,#ef4444,#f87171)}
.bar-row{margin-bottom:11px}
.bar-row .top{display:flex;justify-content:space-between;gap:10px;font-size:12.9px;margin-bottom:5px}
.bar-row .top b{font-weight:650;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 列表 ---------- */
.row-list{display:flex;flex-direction:column}
.row-item{display:flex;align-items:center;gap:12px;padding:12px 2px;border-bottom:1px solid var(--line-2)}
.row-item:last-child{border-bottom:0}
.row-item .rmain{flex:1;min-width:0}
.row-item .rt{font-weight:650;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row-item .rs{font-size:12.5px;color:var(--muted)}

.rank{width:24px;height:24px;border-radius:8px;background:var(--line-2);color:var(--muted);display:inline-flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:750;flex:none}
.rank.t1{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#fff}
.rank.t2{background:linear-gradient(135deg,#cbd5e1,#94a3b8);color:#fff}
.rank.t3{background:linear-gradient(135deg,#fdba74,#fb923c);color:#fff}

/* ---------- 空状态 ---------- */
.empty{padding:40px 20px;text-align:center;color:var(--muted-2)}
.empty .eic{width:56px;height:56px;border-radius:18px;background:var(--line-2);display:inline-flex;align-items:center;justify-content:center;color:var(--muted-2);margin-bottom:10px}
.empty p{font-size:13.4px;margin:0}

/* ---------- 弹窗 / 提示 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.5);backdrop-filter:blur(3px);z-index:900;display:flex;align-items:center;justify-content:center;padding:18px;animation:fade .18s}
.modal{
  background:#fff;border-radius:var(--r-xl);box-shadow:var(--sh-3);width:100%;max-width:560px;
  max-height:88vh;overflow:auto;padding:22px 24px;animation:pop .22s;
}
.modal.wide{max-width:840px}
.modal h3{display:flex;align-items:center;gap:8px;margin-bottom:14px;font-size:17px}
.modal .modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line-2)}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}

#toast{position:fixed;top:18px;left:50%;transform:translateX(-50%);z-index:1200;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none;width:max-content;max-width:92vw}
.toast{
  background:#0f172a;color:#fff;padding:11px 20px;border-radius:999px;font-size:13.6px;font-weight:600;
  box-shadow:var(--sh-3);animation:drop .25s;max-width:92vw;text-align:center;
}
.toast.ok{background:linear-gradient(135deg,#0fb87f,#10b981)}
.toast.err{background:linear-gradient(135deg,#e11d48,#ef4444)}
@keyframes drop{from{opacity:0;transform:translateY(-14px)}to{opacity:1;transform:none}}

/* ---------- 页面内提示条 ---------- */
.flash{
  display:flex;align-items:flex-start;gap:9px;padding:12px 16px;border-radius:var(--r);
  font-size:13.4px;font-weight:650;line-height:1.6;margin-bottom:16px;border:1px solid transparent;
}
.flash svg{flex:none;margin-top:2px}
.flash.ok{background:#ecfdf5;color:#047857;border-color:#a7f3d0}
.flash.bad{background:#fff1f2;color:#be123c;border-color:#fecdd3}

.mask-full{
  position:fixed;inset:0;background:rgba(255,255,255,.9);backdrop-filter:blur(2px);z-index:1100;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--ink-2);
}
.spinner{width:46px;height:46px;border-radius:50%;border:4px solid var(--brand-soft);border-top-color:var(--brand);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 图表 ---------- */
.chart{width:100%;display:block}
.chart-box{padding-top:6px}

/* ---------- 分段条 ---------- */
.segbar{display:flex;height:12px;border-radius:20px;overflow:hidden;background:var(--line-2)}
.segbar>span{display:block;height:100%}
.seg-legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12.8px;color:var(--muted);margin-top:10px}
.seg-legend i{width:9px;height:9px;border-radius:3px;display:inline-block;margin-right:5px}

/* ---------- 头像 ---------- */
.avatar{
  width:36px;height:36px;border-radius:12px;background:var(--grad);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:750;font-size:15px;flex:none;
}
.avatar.sm{width:30px;height:30px;border-radius:10px;font-size:13px}
.avatar.lg{width:52px;height:52px;border-radius:16px;font-size:21px}

/* ============================================================
   批阅痕迹（对勾 / 错叉 / 得分）
   ============================================================ */
.page-block{margin-bottom:20px}
.page-block .page-name{font-size:12.6px;font-weight:650;color:var(--muted);margin-bottom:7px;display:flex;align-items:center;gap:6px}
.stage{
  position:relative;border-radius:var(--r);overflow:hidden;background:#f8fafc;
  border:1px solid var(--line);box-shadow:var(--sh-1);line-height:0;
}
.stage img{width:100%;height:auto;display:block}
.stage .overlay{position:absolute;inset:0;line-height:normal}

.mk{
  position:absolute;border:2.5px solid var(--bad);border-radius:8px;
  background:rgba(239,68,68,.07);box-shadow:0 0 0 1px rgba(255,255,255,.7) inset;
  display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.16s;
}
.mk:hover{background:rgba(239,68,68,.16);z-index:5}
.mk.ok{border-color:var(--ok);background:rgba(16,185,129,.08)}
.mk.ok:hover{background:rgba(16,185,129,.18)}
.mk.part{border-color:var(--warn);background:rgba(245,158,11,.09)}
.mk.part:hover{background:rgba(245,158,11,.2)}
.mk .ic{width:var(--ic,40px);height:var(--ic,40px);display:block;filter:drop-shadow(0 1px 2px rgba(0,0,0,.18))}
.mk .ic svg{width:100%;height:100%;display:block}
.mk .sc{
  position:absolute;right:-2px;bottom:-11px;background:#fff;border:1.5px solid var(--bad);color:var(--bad);
  font-size:var(--sc,12px);font-weight:800;padding:0 6px;border-radius:8px;line-height:1.6;white-space:nowrap;
  box-shadow:0 1px 3px rgba(15,23,42,.16);
}
.mk.ok .sc{border-color:var(--ok);color:#047857}
.mk.part .sc{border-color:var(--warn);color:#b45309}
.mk.flash{animation:mkflash 1.1s ease-out 2}
@keyframes mkflash{0%{box-shadow:0 0 0 0 rgba(79,70,229,.6)}70%{box-shadow:0 0 0 14px rgba(79,70,229,0)}100%{box-shadow:0 0 0 0 rgba(79,70,229,0)}}

.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:12.8px;color:var(--muted);align-items:center;margin-top:6px}
.legend i{width:13px;height:13px;border-radius:4px;display:inline-block;margin-right:5px;vertical-align:-2px}

/* ---------- 逐题列表 ---------- */
.q-list{display:flex;flex-direction:column;gap:9px;max-height:660px;overflow:auto;padding-right:4px}
.q-item{
  border:1px solid var(--line);border-radius:var(--r);padding:11px 13px;background:#fff;
  cursor:pointer;transition:.16s;border-left:4px solid var(--bad);
}
.q-item:hover{border-color:#cfd6e6;box-shadow:var(--sh-1);background:#fcfdff}
.q-item.ok{border-left-color:var(--ok)}
.q-item.part{border-left-color:var(--warn)}
.q-item .qh{display:flex;align-items:center;justify-content:space-between;gap:10px}
.q-item .qn{font-weight:750}
.q-item .qs{font-variant-numeric:tabular-nums;font-weight:750}
.q-item .qc{font-size:12.6px;color:var(--muted);margin-top:3px}

/* ---------- 缩略图 ---------- */
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}
.thumb{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1)}
.thumb img{aspect-ratio:3/4;object-fit:cover;width:100%}
.thumb .idx{position:absolute;left:7px;top:7px;background:rgba(15,23,42,.72);color:#fff;font-size:11.5px;padding:2px 8px;border-radius:20px;font-weight:650}
.thumb .ops{display:flex;border-top:1px solid var(--line-2)}
.thumb .ops button{flex:1;border:0;background:#fff;padding:7px 0;font-size:12.3px;color:var(--muted);cursor:pointer;border-right:1px solid var(--line-2);font-weight:600}
.thumb .ops button:last-child{border-right:0}
.thumb .ops button:hover{background:var(--brand-soft);color:var(--brand)}

/* ---------- 学生选择网格 ---------- */
.stu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:10px;max-height:340px;overflow:auto;padding:3px}
.stu-grid button{
  border:1.5px solid var(--line);background:#fff;border-radius:var(--r);padding:11px 6px;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:2px;transition:.15s;font-weight:650;font-size:14px;color:var(--ink-2);
}
.stu-grid button small{font-size:11.5px;color:var(--muted-2);font-weight:500}
.stu-grid button:hover{border-color:var(--brand-line);background:var(--brand-soft)}
.stu-grid button.on{border-color:var(--brand);background:var(--grad);color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.28)}
.stu-grid button.on small{color:rgba(255,255,255,.82)}

/* ---------- 分页 ---------- */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;padding:16px 0 4px;flex-wrap:wrap}
.pager button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:6px 12px;cursor:pointer;font-size:13.2px;color:var(--ink-2);font-weight:600}
.pager button:hover:not(:disabled){border-color:var(--brand);color:var(--brand)}
.pager button.on{background:var(--grad);color:#fff;border-color:transparent}
.pager button:disabled{opacity:.45;cursor:not-allowed}

/* ---------- 打印 ---------- */
@media print{
  body{background:#fff}
  .no-print,.sidebar,.topbar,.tabbar,.stu-header,.admin-footer,.filter-bar,.btn,.ico-btn{display:none !important}
  .card{box-shadow:none;border:0;padding:0;margin:0 0 12px}
  .content,.stu-main,.admin-main{margin:0 !important;padding:0 !important}
  .stage{border:1px solid #ddd}
  .q-list{max-height:none !important;overflow:visible !important}
}