:root{
  --bg:#f2f5fb;
  --bg-grad: radial-gradient(1100px 620px at 8% -8%, #e4edff 0%, transparent 58%),
             radial-gradient(900px 520px at 96% 4%, #eee6ff 0%, transparent 52%),
             radial-gradient(800px 700px at 60% 110%, #e2f4f8 0%, transparent 55%);
  --panel: rgba(255,255,255,.86);
  --panel-solid:#fff;
  --ink:#111a2b;
  --ink-2:#4c5a70;
  --ink-3:#8894a8;
  --line: rgba(21,40,72,.09);
  --line-2: rgba(21,40,72,.055);
  --brand:#2b4ef0;
  --brand-2:#4064ff;
  --brand-deep:#1a2c7a;
  --brand-soft:rgba(43,78,240,.075);
  --cyan:#12b8c8;
  --violet:#7b5cff;
  --gold:#b08840;
  --gold-soft:rgba(176,136,64,.10);
  --red:#e0483f;
  --red-soft:rgba(224,72,63,.085);
  --amber:#d18417;
  --amber-soft:rgba(209,132,23,.10);
  --green:#0f9d68;
  --green-soft:rgba(15,157,104,.09);
  --blue:#2b7fd4;
  --blue-soft:rgba(43,127,212,.09);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(17,35,66,.04), 0 12px 32px -12px rgba(17,35,66,.14);
  --shadow-lift:0 2px 6px rgba(17,35,66,.06), 0 22px 48px -18px rgba(28,52,120,.24);
  --glow:0 0 0 1px rgba(43,78,240,.10), 0 8px 28px -10px rgba(43,78,240,.32);
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono","Cascadia Code",Consolas,monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;color:var(--ink);
  font:14px/1.6 "Inter","PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);background-image:var(--bg-grad);background-attachment:fixed;
  -webkit-font-smoothing:antialiased;letter-spacing:.1px;
}
body:before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(43,78,240,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(43,78,240,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 72%);
}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{font-weight:650;margin:0;letter-spacing:-.2px}
a{color:var(--brand);text-decoration:none}
[hidden]{display:none!important}
::selection{background:rgba(43,78,240,.16)}

/* ---------- 登录 ---------- */
.login-wrap{position:relative;z-index:1;min-height:100%;display:grid;place-items:center;padding:24px;overflow:hidden}
.login-orb{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none;opacity:.55}
.login-orb.a{width:420px;height:420px;left:8%;top:6%;background:radial-gradient(circle,#7b9bff,transparent 68%);animation:float1 16s ease-in-out infinite}
.login-orb.b{width:380px;height:380px;right:6%;bottom:4%;background:radial-gradient(circle,#7fe3ea,transparent 68%);animation:float2 19s ease-in-out infinite}
@keyframes float1{0%,100%{transform:translate(0,0)}50%{transform:translate(30px,26px)}}
@keyframes float2{0%,100%{transform:translate(0,0)}50%{transform:translate(-26px,-30px)}}
.login-card{
  width:392px;position:relative;border-radius:22px;padding:36px 34px 28px;
  background:rgba(255,255,255,.78);backdrop-filter:blur(24px) saturate(180%);
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 1px 0 rgba(255,255,255,.9) inset, 0 40px 90px -40px rgba(20,40,90,.32), 0 8px 30px -12px rgba(20,40,90,.12);
  overflow:hidden;
}
.login-card:before{
  content:"";position:absolute;inset:-1px;border-radius:22px;padding:1px;pointer-events:none;
  background:linear-gradient(140deg,rgba(43,78,240,.5),rgba(123,92,255,.16) 40%,transparent 65%,rgba(18,184,200,.35));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.login-brand{display:flex;gap:14px;align-items:center;margin-bottom:28px}
.logo-mark{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;flex:none;
  background:linear-gradient(145deg,#4064ff,#1f36c4 55%,#12b8c8);
  color:#fff;font-size:20px;font-weight:600;
  box-shadow:0 10px 24px -8px rgba(43,78,240,.65), 0 0 0 1px rgba(255,255,255,.3) inset;
}
.logo-mark.sm{width:34px;height:34px;font-size:15px;border-radius:10px}
.login-brand h1{font-size:20px;letter-spacing:-.4px}
.login-brand p{margin:3px 0 0;color:var(--ink-3);font-size:12px;letter-spacing:.6px;text-transform:uppercase;font-family:var(--font-mono)}
.field{display:block;margin-bottom:15px}
.field>span{display:block;font-size:12.5px;color:var(--ink-2);margin-bottom:7px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;padding:10px 13px;border:1px solid var(--line);border-radius:10px;
  background:rgba(255,255,255,.7);outline:none;transition:.18s;font-size:14px;
}
.field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(43,78,240,.22)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(43,78,240,.55);background:#fff;box-shadow:0 0 0 4px rgba(43,78,240,.09);
}
.field textarea{min-height:92px;resize:vertical;line-height:1.7}
.login-err{color:var(--red);font-size:12.5px;min-height:18px;margin-bottom:10px}
.login-hint{margin:18px 0 0;font-size:11.5px;color:var(--ink-3);line-height:1.75;text-align:center}

/* ---------- 布局 ---------- */
.app{position:relative;z-index:1;display:flex;height:100vh;overflow:hidden}
.sidebar{
  width:230px;flex:none;display:flex;flex-direction:column;
  background:rgba(255,255,255,.62);backdrop-filter:blur(20px) saturate(170%);
  border-right:1px solid var(--line);
}
.brand{display:flex;gap:10px;align-items:center;padding:17px 16px 15px;border-bottom:1px solid var(--line-2)}
.brand-txt strong{display:block;font-size:14px;letter-spacing:-.2px}
.brand-txt small{color:var(--ink-3);font-size:10.5px;letter-spacing:1.3px;text-transform:uppercase;font-family:var(--font-mono)}
.nav{padding:12px 10px;flex:1;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;
  cursor:pointer;color:var(--ink-2);font-size:13.5px;margin-bottom:2px;transition:.16s;user-select:none;
}
.nav-item:hover{background:rgba(43,78,240,.055);color:var(--ink)}
.nav-item.active{
  background:linear-gradient(100deg,rgba(43,78,240,.11),rgba(123,92,255,.055));
  color:var(--brand-deep);font-weight:600;box-shadow:0 0 0 1px rgba(43,78,240,.10) inset;
}
.nav-item.active:before{
  content:"";position:absolute;left:-10px;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:0 3px 3px 0;background:linear-gradient(180deg,#4064ff,#12b8c8);
  box-shadow:0 0 10px rgba(43,78,240,.55);
}
.nav-item .ico{width:18px;text-align:center;font-size:13px;opacity:.72;font-family:var(--font-mono)}
.nav-item.active .ico{opacity:1;color:var(--brand)}
.nav-item .badge-n{
  margin-left:auto;background:linear-gradient(140deg,#ff6b5e,#e0483f);color:#fff;font-size:10.5px;
  padding:0 6px;border-radius:9px;line-height:17px;min-width:17px;text-align:center;font-weight:700;
  box-shadow:0 3px 8px -2px rgba(224,72,63,.6);
}
.nav-group{font-size:10px;color:var(--ink-3);letter-spacing:1.4px;padding:15px 12px 6px;font-weight:700;text-transform:uppercase;font-family:var(--font-mono)}
.side-foot{border-top:1px solid var(--line-2);padding:12px}
.me{display:flex;gap:9px;align-items:center}
.avatar{
  width:32px;height:32px;border-radius:11px;flex:none;display:grid;place-items:center;
  font-size:12.5px;font-weight:600;color:#fff;
  background:linear-gradient(145deg,#4064ff,#1f36c4);box-shadow:0 6px 14px -6px rgba(43,78,240,.7);
}
.me-txt strong{display:block;font-size:13px}
.me-txt small{color:var(--ink-3);font-size:11px}
.side-actions{display:flex;gap:12px;margin-top:10px;padding-left:2px}
.link-btn{background:none;border:0;padding:0;color:var(--ink-3);font-size:11.5px;cursor:pointer;transition:.15s}
.link-btn:hover{color:var(--brand)}
.main{flex:1;display:flex;flex-direction:column;overflow:hidden}
.topbar{
  padding:19px 28px 15px;display:flex;justify-content:space-between;align-items:flex-start;
  background:rgba(255,255,255,.5);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
}
.topbar h2{font-size:19px;letter-spacing:-.5px}
.sub{margin:4px 0 0;color:var(--ink-3);font-size:12.5px}
.today{
  font-size:11.5px;color:var(--ink-2);padding:5px 11px;border-radius:20px;font-family:var(--font-mono);
  background:rgba(255,255,255,.8);border:1px solid var(--line);box-shadow:0 1px 2px rgba(17,35,66,.04);
}
.view{flex:1;overflow-y:auto;padding:22px 28px 60px}
.view>*{max-width:1200px}

/* ---------- 通用 ---------- */
.card{
  position:relative;background:var(--panel);backdrop-filter:blur(14px) saturate(150%);
  border:1px solid rgba(255,255,255,.9);border-radius:var(--radius);box-shadow:var(--shadow);
  transition:box-shadow .2s,border-color .2s;
}
.card:after{
  content:"";position:absolute;inset:0;border-radius:var(--radius);pointer-events:none;
  box-shadow:0 0 0 1px rgba(21,40,72,.05) inset;
}
.card.pad{padding:18px 20px}
.card-h{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;border-bottom:1px solid var(--line-2)}
.card-h h3{font-size:14px;letter-spacing:-.2px}
.card-h .hint{color:var(--ink-3);font-size:11.5px;font-family:var(--font-mono)}
.grid{display:grid;gap:14px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media(max-width:1080px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.g4,.g3,.g2{grid-template-columns:1fr}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:9px;
  border:1px solid var(--line);background:rgba(255,255,255,.85);cursor:pointer;font-size:13px;
  transition:.16s;white-space:nowrap;font-weight:500;box-shadow:0 1px 2px rgba(17,35,66,.045);
}
.btn:hover{border-color:rgba(43,78,240,.3);color:var(--brand);background:#fff;box-shadow:0 3px 10px -4px rgba(43,78,240,.28)}
.btn:active{transform:translateY(.5px)}
.btn-primary{
  background:linear-gradient(135deg,#4064ff,#2b3fe0);border-color:transparent;color:#fff;
  box-shadow:0 6px 18px -8px rgba(43,78,240,.75), 0 1px 0 rgba(255,255,255,.25) inset;
}
.btn-primary:hover{background:linear-gradient(135deg,#4d6dff,#3348f0);color:#fff;box-shadow:0 10px 24px -8px rgba(43,78,240,.85)}
.btn-gold{
  background:linear-gradient(135deg,#c19a52,#a37c34);border-color:transparent;color:#fff;
  box-shadow:0 6px 18px -8px rgba(176,136,64,.8);
}
.btn-gold:hover{background:linear-gradient(135deg,#cda558,#ad8438);color:#fff}
.btn-danger{color:var(--red);border-color:rgba(224,72,63,.22);background:#fff}
.btn-danger:hover{background:var(--red-soft);border-color:rgba(224,72,63,.42);color:var(--red)}
.btn-sm{padding:5px 11px;font-size:12.5px;border-radius:8px}
.btn-xs{padding:3px 9px;font-size:12px;border-radius:7px}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
.btn:disabled:hover{color:inherit;border-color:var(--line);background:rgba(255,255,255,.85);transform:none}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}

.tag{
  display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:7px;font-size:11.5px;
  background:rgba(21,40,72,.05);color:var(--ink-2);line-height:18px;font-weight:500;
}
.tag.brand{background:var(--brand-soft);color:var(--brand)}
.tag.gold{background:var(--gold-soft);color:#96702c}
.tag.red{background:var(--red-soft);color:var(--red)}
.tag.amber{background:var(--amber-soft);color:#a86a0e}
.tag.green{background:var(--green-soft);color:var(--green)}
.tag.blue{background:var(--blue-soft);color:var(--blue)}

.empty{text-align:center;color:var(--ink-3);padding:38px 12px;font-size:13px;line-height:1.9}
.empty .big{font-size:24px;display:block;margin-bottom:10px;opacity:.35}

table.tbl{width:100%;border-collapse:collapse;font-size:13px}
table.tbl th{
  text-align:left;font-weight:600;color:var(--ink-3);font-size:11px;padding:10px 14px;
  background:rgba(246,248,252,.75);border-bottom:1px solid var(--line);
  white-space:nowrap;letter-spacing:.6px;text-transform:uppercase;font-family:var(--font-mono);
}
table.tbl td{padding:11px 14px;border-bottom:1px solid var(--line-2);vertical-align:middle}
table.tbl tr:last-child td{border-bottom:0}
table.tbl tbody tr{transition:.13s}
table.tbl tbody tr:hover{background:rgba(43,78,240,.032)}
.num{font-variant-numeric:tabular-nums;font-family:var(--font-mono);font-size:12.5px}

/* KPI */
.kpi{
  padding:17px 18px;overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.95),rgba(248,250,255,.82));
}
.kpi:hover{box-shadow:var(--shadow-lift)}
.kpi:before{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,#4064ff,#7b5cff 45%,#12b8c8);
  opacity:.85;
}
.kpi .k-label{color:var(--ink-3);font-size:12px;margin-bottom:9px;display:flex;align-items:center;gap:6px;font-weight:500}
.kpi .k-val{
  font-size:29px;font-weight:680;letter-spacing:-1.2px;font-variant-numeric:tabular-nums;
  line-height:1.1;font-feature-settings:"tnum";
}
.kpi .k-val small{font-size:12.5px;font-weight:500;color:var(--ink-3);margin-left:4px;letter-spacing:0}
.kpi .k-foot{margin-top:9px;font-size:11.5px;color:var(--ink-3);line-height:1.6}
.kpi .k-ico{
  position:absolute;right:14px;top:13px;font-size:15px;color:var(--brand);opacity:.16;
  font-family:var(--font-mono);font-weight:700;
}

/* 学员卡 */
.stu-card{padding:14px 16px;display:flex;gap:12px;align-items:flex-start;cursor:pointer;transition:.18s}
.stu-card:hover{border-color:rgba(43,78,240,.22);box-shadow:var(--shadow-lift);transform:translateY(-2px)}
.stu-av{
  width:38px;height:38px;border-radius:12px;flex:none;display:grid;place-items:center;
  font-weight:600;font-size:14px;color:var(--brand-deep);
  background:linear-gradient(150deg,rgba(43,78,240,.13),rgba(18,184,200,.09));
  box-shadow:0 0 0 1px rgba(43,78,240,.08) inset;
}
.stu-main{flex:1;min-width:0}
.stu-name{font-weight:600;font-size:14px;display:flex;align-items:center;gap:7px;flex-wrap:wrap;letter-spacing:-.2px}
.stu-meta{color:var(--ink-3);font-size:11.5px;margin-top:4px;display:flex;gap:10px;flex-wrap:wrap;font-family:var(--font-mono)}
.stu-tags{margin-top:8px;display:flex;gap:5px;flex-wrap:wrap}

.chips{display:flex;gap:7px;flex-wrap:wrap}
.chip{
  padding:5px 13px;border-radius:20px;border:1px solid var(--line);background:rgba(255,255,255,.8);
  cursor:pointer;font-size:12.5px;color:var(--ink-2);transition:.16s;font-weight:500;
}
.chip:hover{border-color:rgba(43,78,240,.28);color:var(--brand)}
.chip.active{
  background:linear-gradient(135deg,#4064ff,#2b3fe0);border-color:transparent;color:#fff;
  box-shadow:0 5px 14px -6px rgba(43,78,240,.65);
}

/* 详情 */
.detail-head{display:flex;gap:16px;align-items:center;padding:20px 22px;margin-bottom:16px;overflow:hidden}
.detail-head:before{
  content:"";position:absolute;right:-40px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,78,240,.10),transparent 68%);pointer-events:none;
}
.detail-head .big-av{
  width:56px;height:56px;border-radius:17px;display:grid;place-items:center;font-size:21px;font-weight:600;
  color:#fff;background:linear-gradient(145deg,#4064ff,#1f36c4 60%,#12b8c8);
  box-shadow:0 12px 26px -12px rgba(43,78,240,.8), 0 0 0 1px rgba(255,255,255,.28) inset;flex:none;
}
.detail-head .info{flex:1;min-width:0}
.detail-head h2{font-size:20px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;letter-spacing:-.6px}
.detail-head .meta{color:var(--ink-2);font-size:12.5px;margin-top:7px;display:flex;gap:16px;flex-wrap:wrap}
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:16px;padding:0 4px;overflow-x:auto}
.tab{
  padding:10px 15px;cursor:pointer;font-size:13.5px;color:var(--ink-2);border-bottom:2px solid transparent;
  margin-bottom:-1px;transition:.16s;user-select:none;white-space:nowrap;
}
.tab:hover{color:var(--ink)}
.tab.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}
.tab .cnt{font-size:10.5px;color:var(--ink-3);margin-left:5px;font-family:var(--font-mono);
  background:rgba(21,40,72,.05);padding:1px 5px;border-radius:5px}
.tab.active .cnt{background:var(--brand-soft);color:var(--brand)}

.timeline{position:relative;padding-left:20px}
.timeline:before{content:"";position:absolute;left:4px;top:8px;bottom:8px;width:1.5px;
  background:linear-gradient(180deg,rgba(43,78,240,.28),rgba(18,184,200,.2),transparent)}
.tl-item{position:relative;padding-bottom:16px}
.tl-item:before{
  content:"";position:absolute;left:-19.5px;top:7px;width:9px;height:9px;border-radius:50%;
  background:#fff;border:2px solid rgba(43,78,240,.5);box-shadow:0 0 0 3px rgba(43,78,240,.06);
}
.tl-item.gold:before{border-color:rgba(176,136,64,.75);box-shadow:0 0 0 3px rgba(176,136,64,.08)}
.tl-item.red:before{border-color:rgba(224,72,63,.7);box-shadow:0 0 0 3px rgba(224,72,63,.08)}
.tl-item.green:before{border-color:rgba(15,157,104,.7);box-shadow:0 0 0 3px rgba(15,157,104,.08)}
.tl-box{
  background:rgba(250,252,255,.9);border:1px solid var(--line-2);border-radius:11px;padding:12px 14px;
  transition:.16s;
}
.tl-box:hover{border-color:rgba(43,78,240,.16);background:#fff}
.tl-top{display:flex;justify-content:space-between;gap:10px;align-items:baseline;margin-bottom:6px}
.tl-top strong{font-size:13.5px;letter-spacing:-.2px}
.tl-date{color:var(--ink-3);font-size:11px;font-variant-numeric:tabular-nums;white-space:nowrap;font-family:var(--font-mono)}
.tl-body{font-size:13px;color:var(--ink-2);line-height:1.78;white-space:pre-wrap;word-break:break-word}
.tl-actions{margin-top:9px;display:flex;gap:6px;flex-wrap:wrap;align-items:center}

/* 附件 */
.att-list{display:flex;flex-direction:column;gap:6px;margin-top:9px}
.att{
  display:flex;align-items:center;gap:9px;padding:7px 10px;border:1px solid var(--line);border-radius:9px;
  background:rgba(255,255,255,.9);font-size:12.5px;transition:.15s;
}
.att:hover{border-color:rgba(43,78,240,.24);background:#fff;box-shadow:0 3px 10px -5px rgba(43,78,240,.3)}
.att .f-ico{
  width:26px;height:26px;border-radius:7px;display:grid;place-items:center;font-size:9.5px;
  font-weight:700;color:#fff;flex:none;letter-spacing:.3px;font-family:var(--font-mono);
}
.f-ico.pdf{background:linear-gradient(140deg,#e0574d,#c0392b)}
.f-ico.docx,.f-ico.doc{background:linear-gradient(140deg,#3f74cc,#25509a)}
.f-ico.pptx,.f-ico.ppt{background:linear-gradient(140deg,#ca7136,#a5521f)}
.f-ico.xlsx,.f-ico.xls{background:linear-gradient(140deg,#1fa374,#137a52)}
.f-ico.png,.f-ico.jpg,.f-ico.jpeg,.f-ico.gif,.f-ico.webp,.f-ico.bmp{background:linear-gradient(140deg,#7b8ba3,#5b6b82)}
.f-ico.txt{background:linear-gradient(140deg,#95a2b3,#6f7d90)}
.att .f-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.att .f-size{color:var(--ink-3);font-size:11px;white-space:nowrap;font-family:var(--font-mono)}
.att a{font-size:11.5px;white-space:nowrap;color:var(--brand)}
.att a:hover{text-decoration:underline}
.att-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:9px;margin-top:9px}
.att-img{
  border:1px solid var(--line);border-radius:11px;overflow:hidden;background:#f7f9fc;cursor:zoom-in;
  transition:.16s;
}
.att-img:hover{box-shadow:var(--shadow-lift);border-color:rgba(43,78,240,.24)}
.att-img img{width:100%;height:104px;object-fit:cover;display:block}
.att-img .cap{
  font-size:11px;padding:5px 8px;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  border-top:1px solid var(--line-2);background:#fff;
}

/* 上传 */
.drop{
  position:relative;border:1.5px dashed rgba(43,78,240,.26);border-radius:11px;padding:18px;text-align:center;
  background:linear-gradient(160deg,rgba(43,78,240,.03),rgba(18,184,200,.025));
  cursor:pointer;transition:.18s;color:var(--ink-3);font-size:13px;
}
.drop:hover,.drop.over{
  border-color:rgba(43,78,240,.6);color:var(--brand);background:linear-gradient(160deg,rgba(43,78,240,.075),rgba(18,184,200,.05));
  box-shadow:0 0 0 4px rgba(43,78,240,.055) inset;
}
.drop .up-ico{font-size:18px;display:block;margin-bottom:6px;opacity:.55}
.drop small{display:block;font-size:11px;margin-top:5px;color:var(--ink-3)}
.file-pick-list{display:flex;flex-direction:column;gap:5px;margin-top:9px}
.file-pick{
  display:flex;align-items:center;gap:8px;background:rgba(43,78,240,.045);
  border:1px solid rgba(43,78,240,.12);border-radius:8px;padding:6px 10px;font-size:12.5px;
}
.file-pick .rm{margin-left:auto;cursor:pointer;color:var(--ink-3);border:0;background:none;font-size:15px;line-height:1}
.file-pick .rm:hover{color:var(--red)}

/* 模态 */
.modal-mask{
  position:fixed;inset:0;background:rgba(16,26,46,.36);backdrop-filter:blur(6px) saturate(120%);
  display:grid;place-items:center;z-index:100;padding:20px;animation:fade .18s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{
  position:relative;background:rgba(255,255,255,.97);border-radius:18px;width:100%;max-width:560px;
  max-height:90vh;display:flex;flex-direction:column;border:1px solid rgba(255,255,255,.9);
  box-shadow:0 1px 0 rgba(255,255,255,.9) inset, 0 50px 100px -40px rgba(16,28,55,.45);
  animation:pop .24s cubic-bezier(.2,.85,.3,1);
}
@keyframes pop{from{transform:translateY(10px) scale(.985);opacity:.5}to{transform:none;opacity:1}}
.modal.wide{max-width:780px}
.modal.narrow{max-width:430px}
.modal-h{display:flex;justify-content:space-between;align-items:center;padding:17px 22px;border-bottom:1px solid var(--line-2)}
.modal-h h3{font-size:15px;letter-spacing:-.2px}
.modal-x{border:0;background:none;font-size:20px;color:var(--ink-3);cursor:pointer;line-height:1;padding:0 2px;transition:.15s}
.modal-x:hover{color:var(--ink);transform:rotate(90deg)}
.modal-b{padding:20px 22px;overflow-y:auto}
.modal-f{
  padding:14px 22px;border-top:1px solid var(--line-2);display:flex;justify-content:flex-end;gap:9px;
  background:rgba(249,251,254,.9);border-radius:0 0 18px 18px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row.one{grid-template-columns:1fr}

.checks{display:flex;gap:7px;flex-wrap:wrap}
.check{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border:1px solid var(--line);
  border-radius:9px;cursor:pointer;font-size:12.5px;background:#fff;transition:.16s;user-select:none;
}
.check input{display:none}
.check:hover{border-color:rgba(43,78,240,.3)}
.check.on{
  border-color:rgba(43,78,240,.45);background:var(--brand-soft);color:var(--brand);font-weight:600;
  box-shadow:0 0 0 3px rgba(43,78,240,.06);
}

.toast-root{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:300;display:flex;flex-direction:column;gap:8px;align-items:center}
.toast{
  background:rgba(22,32,52,.94);backdrop-filter:blur(10px);color:#fff;padding:9px 18px;border-radius:11px;
  font-size:13px;box-shadow:0 12px 32px -10px rgba(16,28,55,.6);animation:drop .22s ease;
  border:1px solid rgba(255,255,255,.1);
}
.toast.err{background:rgba(176,48,42,.95)}
.toast.ok{background:rgba(14,110,76,.95)}
@keyframes drop{from{transform:translateY(-10px);opacity:0}to{transform:none;opacity:1}}

.lightbox{position:fixed;inset:0;background:rgba(10,16,28,.9);backdrop-filter:blur(8px);z-index:200;display:grid;place-items:center;padding:30px}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.55)}
.lightbox-close{position:absolute;top:18px;right:24px;background:none;border:0;color:#fff;font-size:30px;cursor:pointer;line-height:1}

.bar{height:6px;background:rgba(21,40,72,.055);border-radius:4px;overflow:hidden}
.bar>i{display:block;height:100%;border-radius:4px;transition:width .5s ease;
  background:linear-gradient(90deg,#4064ff,#7b5cff 70%,#12b8c8)}

.chart-box{position:relative;height:170px;display:flex;align-items:flex-end;gap:8px;padding:10px 4px 0}
.chart-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:5px;height:100%;justify-content:flex-end}
.chart-col .bar-v{
  width:100%;max-width:40px;border-radius:5px 5px 2px 2px;min-height:2px;transition:height .55s cubic-bezier(.2,.8,.3,1);
  background:linear-gradient(180deg,#5b7bff,#2b3fe0);
  box-shadow:0 -1px 0 rgba(255,255,255,.4) inset, 0 4px 14px -6px rgba(43,78,240,.7);
}
.chart-col .bar-v.hollow{background:rgba(21,40,72,.06);box-shadow:none}
.chart-col .bar-l{font-size:10.5px;color:var(--ink-3);white-space:nowrap;font-family:var(--font-mono)}
.chart-col .bar-t{font-size:11px;color:var(--ink-2);font-variant-numeric:tabular-nums;font-family:var(--font-mono)}
.donut-wrap{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.legend{display:flex;flex-direction:column;gap:7px;font-size:12.5px;flex:1;min-width:130px}
.legend-item{display:flex;align-items:center;gap:7px;color:var(--ink-2)}
.legend-item .sw{width:9px;height:9px;border-radius:3px;flex:none}
.legend-item .n{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--ink);font-weight:600;font-family:var(--font-mono);font-size:12px}

.renew-item{display:flex;align-items:center;gap:11px;padding:10px 0;border-bottom:1px solid var(--line-2);cursor:pointer;transition:.15s}
.renew-item:last-child{border-bottom:0}
.renew-item:hover .rn-name{color:var(--brand)}
.rn-name{font-weight:500;font-size:13.5px;transition:.15s}
.rn-meta{font-size:11px;color:var(--ink-3);margin-top:2px;font-family:var(--font-mono)}

.script-card{padding:15px 17px;transition:.18s}
.script-card:hover{box-shadow:var(--shadow-lift)}
.script-card h4{font-size:13.5px;margin-bottom:7px;display:flex;gap:8px;align-items:center;flex-wrap:wrap;letter-spacing:-.2px}
.script-txt{
  font-size:13px;color:var(--ink-2);line-height:1.8;white-space:pre-wrap;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.script-card.open .script-txt{-webkit-line-clamp:unset}
.script-foot{margin-top:10px;display:flex;gap:7px;align-items:center;flex-wrap:wrap}

.issue{padding:14px 17px;display:flex;gap:12px}
.issue .i-ico{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-size:15px;flex:none;
  background:rgba(21,40,72,.045);
}
.issue .i-body{flex:1;min-width:0}
.issue .i-head{display:flex;gap:7px;align-items:center;flex-wrap:wrap;margin-bottom:6px}
.issue .i-txt{font-size:13px;color:var(--ink-2);line-height:1.75;white-space:pre-wrap}
.issue .i-foot{margin-top:9px;font-size:11.5px;color:var(--ink-3);display:flex;gap:12px;flex-wrap:wrap;align-items:center}

.plan-doc{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px 32px;font-size:13.5px;
  line-height:1.95;max-height:52vh;overflow-y:auto;color:#22303f;
}
.plan-doc h1{font-size:19px;color:#132a4d;padding-bottom:9px;border-bottom:2px solid var(--gold);margin-bottom:11px;letter-spacing:-.4px}
.plan-doc h2{font-size:14.5px;color:#22406b;margin:19px 0 7px;padding-left:10px;border-left:3px solid var(--brand)}
.plan-doc p{margin:0 0 8px}
.plan-doc .li{padding-left:14px;position:relative;margin-bottom:4px}
.plan-doc .li:before{content:"·";position:absolute;left:4px;color:var(--gold);font-weight:700}
.plan-doc .quote{
  background:linear-gradient(100deg,#faf6ee,#fdfbf7);border-left:3px solid var(--gold);
  padding:10px 14px;border-radius:0 8px 8px 0;color:#57503f;margin:9px 0;
}
.plan-doc table{width:100%;border-collapse:collapse;font-size:12.5px;margin:9px 0}
.plan-doc th{background:#eef3fb;text-align:left;padding:7px 10px;border:1px solid #dde5f0;color:#24405f;font-size:11.5px}
.plan-doc td{padding:7px 10px;border:1px solid #e8eef6}

.mini-note{font-size:11.5px;color:var(--ink-3);line-height:1.75;margin-top:6px}
.split-2{display:grid;grid-template-columns:1.35fr 1fr;gap:16px;align-items:start}
@media(max-width:980px){.split-2{grid-template-columns:1fr}}
.sticky{position:sticky;top:0}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:rgba(21,40,72,.16);border-radius:5px;border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:rgba(21,40,72,.28);background-clip:content-box}
::-webkit-scrollbar-track{background:transparent}

/* 搜索/筛选输入统一 */
.view input:not([type=checkbox]):not([type=radio]),.view select{
  transition:.16s;
}
.view input:not([type=checkbox]):not([type=radio]):focus,.view select:focus{
  border-color:rgba(43,78,240,.5)!important;box-shadow:0 0 0 4px rgba(43,78,240,.08);background:#fff!important;
}

/* =================================================================
   课堂照片：选择器 + 时间线缩略图 + 大图查看
   ================================================================= */
.photo-picker{border:1px dashed #d6deea;border-radius:12px;padding:12px 12px 10px;background:#fbfcfe}
.pp-head{display:flex;align-items:baseline;gap:8px;margin-bottom:10px}
.pp-title{font-size:13px;font-weight:600;color:#2b3444}
.pp-hint{font-size:11.5px;color:#90a0b3}
.pp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:10px}
.pp-item{display:flex;flex-direction:column;gap:5px;min-width:0}
.pp-thumb{position:relative;width:100%;padding-top:100%;border-radius:10px;overflow:hidden;background:#eef1f6;box-shadow:0 1px 3px rgba(20,32,56,.08)}
.pp-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.pp-rm{position:absolute;top:3px;right:3px;width:20px;height:20px;border:0;border-radius:50%;background:rgba(24,32,48,.62);color:#fff;font-size:13px;line-height:1;cursor:pointer;transition:.15s}
.pp-rm:hover{background:#e0483f}
.pp-tag,.pp-note{width:100%;box-sizing:border-box;font-size:11.5px;padding:4px 6px;border:1px solid #e3e8ef;border-radius:7px;background:#fff;color:#2b3444}
.pp-note::placeholder{color:#b3bdca}
.pp-vis{display:flex;align-items:center;gap:4px;font-size:11px;color:#9aa7b8;cursor:pointer;user-select:none;padding:1px 2px;border-radius:6px}
.pp-vis.on{color:#2b7a5b;font-weight:600}
.pp-vis input{width:12px;height:12px;accent-color:#2b7a5b;cursor:pointer;pointer-events:none}
.pp-add{border:1px dashed #cfd8e6;border-radius:10px;min-height:104px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-size:11.5px;color:#8496ab;cursor:pointer;background:#fff;transition:.16s}
.pp-add:hover{border-color:rgba(43,78,240,.55);color:#2b4ef0;background:#f6f8ff}
.pp-add .ic{font-size:20px;line-height:1}
.pp-tip{margin:9px 0 0}

.tl-photos{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.tl-ph{position:relative;width:68px;height:68px;border-radius:9px;overflow:hidden;cursor:zoom-in;background:#eef1f6;box-shadow:0 1px 3px rgba(20,32,56,.1);transition:.16s}
.tl-ph:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(20,32,56,.16)}
.tl-ph img{width:100%;height:100%;object-fit:cover;display:block}
.tl-ph-tag{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(12,20,34,.78));color:#fff;font-size:10px;text-align:center;padding:8px 0 2px}
.tl-ph.hidden-p{opacity:.55;filter:grayscale(.5)}
.tl-ph-eye{position:absolute;top:2px;right:3px;font-size:10px}

.lightbox-mask{position:fixed;inset:0;z-index:9999;background:rgba(8,14,26,.82);display:flex;align-items:center;justify-content:center;padding:28px;animation:lbin .16s ease}
@keyframes lbin{from{opacity:0}to{opacity:1}}
.lightbox{position:relative;max-width:min(92vw,1100px);max-height:92vh;display:flex;flex-direction:column;align-items:center;gap:10px}
.lightbox img{max-width:100%;max-height:82vh;border-radius:12px;box-shadow:0 20px 60px rgba(0,0,0,.5);object-fit:contain;background:#fff}
.lb-cap{color:#dbe4f0;font-size:13px;text-align:center}
.lb-x{position:absolute;top:-40px;right:0;width:32px;height:32px;border:0;border-radius:50%;background:rgba(255,255,255,.16);color:#fff;font-size:20px;line-height:1;cursor:pointer}
.lb-x:hover{background:rgba(255,255,255,.3)}

/* =================================================================
   知识库：素材库 / 练习题 / 知识点词表
   ================================================================= */
.mk-hero{position:relative;overflow:hidden;border-radius:18px;padding:22px 26px;margin-bottom:16px;
  background:linear-gradient(120deg,#2b4ef0 0%,#4064ff 42%,#12b8c8 100%);color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  box-shadow:0 14px 34px rgba(43,78,240,.22)}
.mk-hero::after{content:'';position:absolute;right:-60px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 68%)}
.mk-hero h2{margin:0 0 6px;font-size:19px;font-weight:650;letter-spacing:.4px}
.mk-hero p{margin:0;font-size:13px;line-height:1.75;color:rgba(255,255,255,.86);max-width:560px}
.mk-hero-stat{position:relative;display:flex;gap:22px;z-index:1}
.mk-hero-stat div{text-align:center;min-width:56px}
.mk-hero-stat b{display:block;font-size:22px;font-weight:650;line-height:1.2;font-variant-numeric:tabular-nums}
.mk-hero-stat span{display:block;font-size:11.5px;color:rgba(255,255,255,.78);margin-top:2px;white-space:nowrap}

.tabs-line{margin-bottom:16px}
.tabs-line-in{display:inline-flex;gap:4px;padding:4px;border-radius:12px;background:#eef2f8}
.tl-tab{border:0;background:transparent;padding:8px 18px;border-radius:9px;font-size:13.5px;color:#5a6675;cursor:pointer;font-family:inherit;transition:.18s}
.tl-tab:hover{color:#2b4ef0}
.tl-tab.active{background:#fff;color:#2b4ef0;font-weight:600;box-shadow:0 2px 8px rgba(43,78,240,.14)}

.kb-search{flex:1;min-width:200px;padding:9px 14px;border:1px solid #e3e8ef;border-radius:9px;background:#fbfcfe;outline:none;font-size:13.5px;font-family:inherit}
.kb-search:focus{border-color:#b9c8ff;background:#fff;box-shadow:0 0 0 3px rgba(43,78,240,.09)}

.kb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(258px,1fr));gap:14px}
.kb-card{background:#fff;border:1px solid #eef2f6;border-radius:14px;overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s,box-shadow .18s,border-color .18s}
.kb-card:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(24,40,80,.09);border-color:#dbe4f6}
.kb-thumb{position:relative;height:132px;background:#f4f7fb;display:flex;align-items:center;justify-content:center;cursor:zoom-in;overflow:hidden}
.kb-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.kb-ext{font-size:13px;font-weight:700;letter-spacing:1.5px;color:#8fa0b5;background:#e8eef7;padding:14px 20px;border-radius:10px}
.kb-type{position:absolute;left:9px;top:9px;font-size:11px;padding:3px 8px;border-radius:6px;background:rgba(43,78,240,.92);color:#fff;font-weight:500}
.kb-eye{position:absolute;right:9px;top:9px;font-size:11px;padding:3px 8px;border-radius:6px;background:rgba(18,184,200,.94);color:#fff}
.kb-info{padding:12px 14px 11px;display:flex;flex-direction:column;gap:7px;flex:1}
.kb-title{font-size:13.5px;font-weight:600;color:#1c2430;line-height:1.45;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.kb-meta{display:flex;gap:6px;align-items:center;flex-wrap:wrap;font-size:11.5px}
.kb-page{color:#7c8b9d}
.kb-pts{display:flex;gap:5px;flex-wrap:wrap}
.kp-mini{font-size:11px;padding:2px 7px;border-radius:5px;background:#f0f4fb;color:#516b8a;border:1px solid #e4ebf5}
.kp-mini.more{background:#fff;color:#90a0b3}
.kp-mini.none{background:#fff6ec;color:#c07a2e;border-color:#f6e3ca}
.kb-foot{margin-top:auto;padding-top:8px;border-top:1px solid #f1f5f9;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.kb-use{font-size:11.5px;color:#90a0b3}
.kb-use.on{color:#1f9d63;font-weight:500}
.kb-foot .btn-row{margin-left:auto}

/* 知识点选择器 */
.kp-pick{display:flex;flex-direction:column;gap:8px}
.kp-picked{display:flex;gap:6px;flex-wrap:wrap;padding:8px 10px;border:1px dashed #cfdcf0;border-radius:9px;background:#f8fbff}
.kp-chip{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;padding:4px 8px 4px 10px;border-radius:7px;
  background:linear-gradient(135deg,#4064ff,#12b8c8);color:#fff;font-weight:500}
.kp-chip i{font-style:normal;cursor:pointer;opacity:.75;font-size:13px;line-height:1}
.kp-chip i:hover{opacity:1}
.kp-input{padding:9px 12px;border:1px solid #e3e8ef;border-radius:9px;background:#fbfcfe;outline:none;font-size:13px;font-family:inherit}
.kp-input:focus{border-color:#b9c8ff;background:#fff;box-shadow:0 0 0 3px rgba(43,78,240,.09)}
.kp-sug-label{font-size:11.5px;color:#90a0b3;margin-bottom:6px}
.kp-sug-list{display:flex;gap:6px;flex-wrap:wrap;max-height:132px;overflow:auto;padding-right:4px}
.kp-sug{font-size:12.5px;padding:4px 10px;border-radius:7px;border:1px solid #e4ebf5;background:#fff;color:#516b8a;cursor:pointer;transition:.15s}
.kp-sug:hover{border-color:#4064ff;color:#2b4ef0;background:#f4f7ff}
.kb-form .field>span{font-size:12.5px}
.chk-row{display:flex;align-items:center;gap:8px;font-size:13px;color:#3c4a5c;cursor:pointer;padding:10px 12px;border-radius:9px;background:#f6f9ff;border:1px solid #e6edfa}
.chk-row input{accent-color:#2b4ef0;width:15px;height:15px}

/* 练习题列表 */
.mq-item{padding:12px 0;border-bottom:1px dashed #eef2f6}
.mq-item:last-child{border-bottom:0}
.mq-stem{font-size:13.5px;line-height:1.75;color:#1c2430}
.mq-stem b{color:#2b4ef0;margin-right:3px}
.mq-tags{display:flex;gap:5px;flex-wrap:wrap;margin-top:6px}
.mq-ans,.mq-ana{font-size:12.5px;line-height:1.75;margin-top:6px;padding:7px 10px;border-radius:8px}
.mq-ans{background:#f2fbf6;color:#1f7a52}
.mq-ana{background:#f7f9fc;color:#5a6675}
.mq-ans b,.mq-ana b{display:inline-block;margin-right:6px;font-weight:600;opacity:.7;font-size:11.5px}

/* 知识点词表 */
.kp-cat{font-size:13.5px;font-weight:600;color:#1c2430}
.kp-wrap{display:flex;gap:7px;flex-wrap:wrap;min-height:30px;align-items:center}
.kp-tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;padding:4px 8px 4px 11px;border-radius:7px;
  background:#f0f4fb;color:#41618a;border:1px solid #e2eaf5}
.kp-tag i{font-style:normal;cursor:pointer;color:#a8b6c6;font-size:14px;line-height:1}
.kp-tag i:hover{color:#e0483f}
.kp-add-in{padding:6px 10px;border:1px solid #e3e8ef;border-radius:7px;background:#fbfcfe;outline:none;font-size:12.5px;font-family:inherit;width:180px}
.kp-add-in:focus{border-color:#b9c8ff;background:#fff}

@media (max-width:760px){
  .mk-hero{padding:18px 18px}
  .mk-hero-stat{gap:16px}
  .mk-hero-stat b{font-size:19px}
  .kb-grid{grid-template-columns:1fr}
}

/* 错题卡片：关联素材/练习 */
.mk-rel summary{font-size:12.5px;color:#2b4ef0;cursor:pointer;user-select:none;padding:6px 10px;border-radius:8px;background:#f4f7ff;display:inline-block;border:1px solid #e3ebfb}
.mk-rel summary:hover{background:#ebf1ff}
.mk-rel[open] summary{border-bottom-left-radius:0;border-bottom-right-radius:0}
.mk-rel-body{padding:10px 12px;border:1px solid #e3ebfb;border-radius:0 8px 8px 8px;background:#fbfcff;display:flex;flex-direction:column;gap:8px}
.mk-rel-item{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12.5px}
.mk-rel-link{color:#2b4ef0;text-decoration:none;font-weight:500}
.mk-rel-link:hover{text-decoration:underline}
.mk-rel-q{padding:8px 10px;border-radius:8px;background:#fff;border:1px dashed #dbe4f6}

/* 邀请码 */
.iv-code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;font-weight:600;letter-spacing:1.5px;
  color:#2b4ef0;background:#f0f5ff;border:1px solid #dce7fb;border-radius:7px;padding:4px 10px;cursor:pointer;display:inline-block}
.iv-code:hover{background:#e4edff}