:root{
  --accent:#660099; --accent-2:#8a2be2; --accent-soft:#f3e8fb; --gold:#ffcc33;
  --bg:#f6f5f9; --panel:#ffffff; --panel-2:#faf9fc; --line:#e7e3ee; --text:#1f1a2b; --muted:#6d6680;
  --ok:#1a8f5a; --ok-soft:#e3f6ec; --warn:#b26a00; --warn-soft:#fff3dc; --bad:#c62f3a; --bad-soft:#fde8ea;
  --info:#2763c4; --info-soft:#e6efff;
  --shadow:0 1px 2px rgba(30,10,60,.05),0 4px 16px rgba(30,10,60,.06);
  --radius:14px; --side:228px;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --accent:#b77ce6; --accent-2:#c99bf0; --accent-soft:#2d2140; --gold:#ffd25c;
  --bg:#141218; --panel:#1d1a24; --panel-2:#221f2a; --line:#322d3d; --text:#ece8f3; --muted:#a39bb3;
  --ok:#4cc38a; --ok-soft:#173226; --warn:#f0b44c; --warn-soft:#3a2c12; --bad:#ff6b76; --bad-soft:#3a1a1e;
  --info:#7aa7ff; --info-soft:#1a2740;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 4px 16px rgba(0,0,0,.25);
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:14px/1.55 "Segoe UI","Microsoft YaHei UI","Microsoft YaHei","PingFang SC",system-ui,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}
a{color:var(--accent);text-decoration:none;cursor:pointer}
a:hover{text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0 0 .4em;line-height:1.3}
h1{font-size:22px}h2{font-size:17px}h3{font-size:15px}
.muted{color:var(--muted)} .small{font-size:12px} .nowrap{white-space:nowrap}
.app{display:flex;height:100vh}
/* sidebar */
.side{width:var(--side);flex:none;background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:14px 10px}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 16px}
.brand img{width:34px;height:34px;border-radius:9px}
.brand b{display:block;font-size:15px}
.brand span{font-size:11px;color:var(--muted)}
.nav{display:flex;flex-direction:column;gap:2px;flex:1;overflow:auto}
.nav a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;color:var(--text);text-decoration:none;position:relative}
.nav a:hover{background:var(--panel-2)}
.nav a.on{background:var(--accent-soft);color:var(--accent);font-weight:600}
.nav a svg{width:18px;height:18px;flex:none}
.nav .badge{margin-left:auto}
.nav .sep{height:1px;background:var(--line);margin:8px 6px}
.side-foot{padding:8px;font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}
/* main */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.top{height:58px;flex:none;display:flex;align-items:center;gap:12px;padding:0 22px;border-bottom:1px solid var(--line);background:var(--panel)}
.top .title{font-size:17px;font-weight:600}
.top .grow{flex:1}
.clock{font-variant-numeric:tabular-nums;color:var(--muted)}
.content{flex:1;overflow:auto;padding:22px}
.content.full{padding:0;overflow:hidden;display:flex}
/* generic */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.card h2{display:flex;align-items:center;gap:8px}
.card h2 .act{margin-left:auto;font-size:12px;font-weight:400}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.dash{grid-template-columns:repeat(12,minmax(0,1fr))}
.span4{grid-column:span 4}.span5{grid-column:span 5}.span6{grid-column:span 6}.span7{grid-column:span 7}.span8{grid-column:span 8}.span12{grid-column:span 12}
@media (max-width:1180px){.span4,.span5,.span6,.span7,.span8{grid-column:span 12}.g3{grid-template-columns:1fr 1fr}}
@media (max-width:820px){:root{--side:64px}.brand div,.nav a span,.side-foot span{display:none}.g2,.g3{grid-template-columns:1fr}}
.row{display:flex;align-items:center;gap:8px}
.row.wrap{flex-wrap:wrap}
.col{display:flex;flex-direction:column;gap:8px}
.spacer{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:var(--panel);padding:7px 13px;border-radius:9px;cursor:pointer;white-space:nowrap;text-decoration:none!important;color:var(--text)}
.btn svg{width:16px;height:16px;flex:none}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{filter:brightness(1.08);color:#fff}
.btn.ghost{border-color:transparent;background:transparent}
.btn.ghost:hover{background:var(--panel-2)}
.btn.danger{color:var(--bad)}
.btn.sm{padding:4px 9px;font-size:12px;border-radius:7px}
.btn:disabled{opacity:.5;cursor:default}
.icon-btn{width:36px;height:36px;padding:0;border-radius:10px;position:relative}
.icon-btn svg{width:18px;height:18px}
input[type=text],input[type=password],input[type=url],input[type=number],input[type=datetime-local],input[type=date],input[type=time],input[type=email],select,textarea{
  width:100%;border:1px solid var(--line);background:var(--panel-2);border-radius:9px;padding:8px 10px;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
textarea{resize:vertical;min-height:80px}
label.f{display:block;margin:10px 0 4px;font-weight:600;font-size:13px}
.hint{font-size:12px;color:var(--muted);margin-top:4px}
.chk{display:flex;align-items:center;gap:8px;margin:6px 0;cursor:pointer}
.chk input{width:16px;height:16px;accent-color:var(--accent)}
.badge{display:inline-block;min-width:18px;padding:1px 6px;border-radius:999px;background:var(--bad);color:#fff;font-size:11px;text-align:center;line-height:16px}
.icon-btn .badge{position:absolute;top:-4px;right:-4px}
.pill{display:inline-flex;align-items:center;gap:4px;padding:2px 9px;border-radius:999px;font-size:12px;background:var(--panel-2);border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.pill.ok{background:var(--ok-soft);color:var(--ok);border-color:transparent}
.pill.warn{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.pill.bad{background:var(--bad-soft);color:var(--bad);border-color:transparent}
.pill.info{background:var(--info-soft);color:var(--info);border-color:transparent}
.pill.acc{background:var(--accent-soft);color:var(--accent);border-color:transparent}
.list{display:flex;flex-direction:column}
.item{display:flex;gap:12px;align-items:flex-start;padding:10px 4px;border-bottom:1px solid var(--line)}
.item:last-child{border-bottom:none}
.item .body{flex:1;min-width:0}
.item .t{font-weight:600;overflow:hidden;text-overflow:ellipsis}
.item .s{font-size:12px;color:var(--muted)}
.item.click{cursor:pointer;border-radius:8px}
.item.click:hover{background:var(--panel-2)}
.empty{padding:22px;text-align:center;color:var(--muted)}
.err{padding:10px 12px;border-radius:10px;background:var(--bad-soft);color:var(--bad);font-size:13px;margin:6px 0}
.note-box{padding:10px 12px;border-radius:10px;background:var(--info-soft);color:var(--text);font-size:13px;margin:6px 0}
.note-box b{color:var(--info)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:14px;flex-wrap:wrap}
.tabs a{padding:8px 14px;border-bottom:2px solid transparent;color:var(--muted);text-decoration:none;font-weight:500}
.tabs a.on{color:var(--accent);border-color:var(--accent)}
.tabs a:hover{color:var(--text)}
.skel{height:14px;border-radius:6px;background:linear-gradient(90deg,var(--panel-2),var(--line),var(--panel-2));background-size:200% 100%;animation:sk 1.2s infinite;margin:8px 0}
@keyframes sk{to{background-position:-200% 0}}
.spin{width:16px;height:16px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:rot .8s linear infinite;display:inline-block}
@keyframes rot{to{transform:rotate(360deg)}}
/* quick links */
.links{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:10px}
.link-tile{display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 8px;border-radius:12px;border:1px solid var(--line);background:var(--panel-2);cursor:pointer;text-align:center;font-size:13px;color:var(--text);text-decoration:none!important}
.link-tile:hover{border-color:var(--accent);transform:translateY(-1px)}
.link-tile .ico{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:19px;color:#fff;font-weight:700}
/* hero */
.hero{background:linear-gradient(120deg,#660099,#3d0c6e);color:#fff;border:none}
:root[data-theme="dark"] .hero{background:linear-gradient(120deg,#4b1673,#2a0d47)}
.hero .muted{color:rgba(255,255,255,.75)}
.hero .btn{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.25);color:#fff}
.hero .btn.primary{background:var(--gold);border-color:var(--gold);color:#2a0d47;font-weight:600}
.phase{display:inline-flex;gap:4px;background:rgba(255,255,255,.12);border-radius:999px;padding:3px}
.phase span{padding:3px 12px;border-radius:999px;font-size:12px}
.phase span.on{background:#fff;color:#4b1673;font-weight:600}
.big-count{font-size:30px;font-weight:700;font-variant-numeric:tabular-nums}
/* timeline */
.tl{position:relative;padding-left:18px}
.tl:before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl .ev{position:relative;padding:6px 0 10px}
.tl .ev:before{content:"";position:absolute;left:-17px;top:11px;width:10px;height:10px;border-radius:50%;background:var(--panel);border:2px solid var(--accent)}
.tl .ev.past{opacity:.55}
.tl .ev.now:before{background:var(--gold);border-color:var(--gold);box-shadow:0 0 0 4px rgba(255,204,51,.3)}
/* class page / split layouts */
.split{display:flex;flex:1;min-height:0;width:100%}
.split .pane-l{width:310px;flex:none;border-right:1px solid var(--line);overflow:auto;background:var(--panel);padding:14px}
.split .pane-m{width:360px;flex:none;border-right:1px solid var(--line);overflow:auto;background:var(--panel)}
.split .pane-r{flex:1;overflow:auto;padding:20px 24px;min-width:0}
.sess{padding:10px 12px;border-radius:10px;cursor:pointer;border:1px solid transparent;margin-bottom:4px}
.sess:hover{background:var(--panel-2)}
.sess.on{background:var(--accent-soft);border-color:var(--accent)}
.sess .t{font-weight:600}
.sess .s{font-size:12px;color:var(--muted)}
.group-h{font-size:12px;font-weight:700;color:var(--muted);margin:14px 4px 6px;text-transform:uppercase;letter-spacing:.04em}
.steps{display:flex;gap:8px;margin:14px 0}
.steps a{flex:1;padding:12px;border-radius:12px;border:1px solid var(--line);background:var(--panel);text-decoration:none!important;color:var(--text);display:flex;align-items:center;gap:10px}
.steps a .n{width:28px;height:28px;border-radius:50%;background:var(--panel-2);display:flex;align-items:center;justify-content:center;font-weight:700;border:1px solid var(--line)}
.steps a.on{border-color:var(--accent);background:var(--accent-soft)}
.steps a.on .n{background:var(--accent);color:#fff;border-color:var(--accent)}
.steps a .now{margin-left:auto}
.check-item{display:flex;align-items:center;gap:8px;padding:6px 4px;border-radius:8px}
.check-item:hover{background:var(--panel-2)}
.check-item input[type=checkbox]{width:17px;height:17px;accent-color:var(--accent)}
.check-item .txt{flex:1}
.check-item.done .txt{text-decoration:line-through;color:var(--muted)}
.check-item .x{opacity:0}
.check-item:hover .x{opacity:1}
.timer{font-size:40px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:1px}
.progress{height:8px;border-radius:99px;background:var(--panel-2);overflow:hidden;border:1px solid var(--line)}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.quick-in{display:flex;gap:8px}
.tagbar{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
.editor{width:100%;min-height:340px;font-family:"Cascadia Code",Consolas,"Microsoft YaHei",monospace;font-size:13.5px;line-height:1.7;padding:14px}
/* markdown */
.md{line-height:1.75;word-wrap:break-word}
.md h1,.md h2,.md h3{margin:1em 0 .4em}
.md h1:first-child,.md h2:first-child,.md h3:first-child{margin-top:0}
.md ul,.md ol{padding-left:22px;margin:.4em 0}
.md code{background:var(--panel-2);border:1px solid var(--line);padding:0 5px;border-radius:5px;font-size:.92em}
.md pre{background:var(--panel-2);border:1px solid var(--line);padding:10px;border-radius:9px;overflow:auto}
.md pre code{border:none;padding:0;background:none}
.md blockquote{margin:.5em 0;padding:4px 12px;border-left:3px solid var(--accent);color:var(--muted);background:var(--panel-2);border-radius:0 8px 8px 0}
.md p{margin:.45em 0}
.md hr{border:none;border-top:1px solid var(--line)}
.md table{border-collapse:collapse;margin:.5em 0}
.md td,.md th{border:1px solid var(--line);padding:4px 8px}
.summary-box{border:1px solid var(--accent);background:var(--accent-soft);border-radius:12px;padding:14px 16px}
.html-body{line-height:1.7;overflow-wrap:anywhere}
.html-body img{max-width:100%}
.html-body table{max-width:100%}
/* calendar week */
.week{display:grid;grid-template-columns:54px repeat(7,minmax(0,1fr));border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel)}
.week .hd{padding:8px 6px;text-align:center;border-bottom:1px solid var(--line);border-left:1px solid var(--line);font-size:13px;background:var(--panel-2)}
.week .hd.today{color:var(--accent);font-weight:700}
.week .hd:first-child{border-left:none}
.week .hours{position:relative}
.week .hours div{height:48px;font-size:11px;color:var(--muted);text-align:right;padding-right:6px;transform:translateY(-7px)}
.week .day{position:relative;border-left:1px solid var(--line);background:repeating-linear-gradient(to bottom,transparent 0,transparent 47px,var(--line) 47px,var(--line) 48px)}
.week .day.today{background-color:var(--accent-soft)}
.week .ev{position:absolute;left:3px;right:3px;border-radius:7px;padding:3px 6px;font-size:11.5px;overflow:hidden;cursor:pointer;line-height:1.35;border-left:3px solid}
.week .ev.class{background:var(--accent-soft);border-color:var(--accent);color:var(--text)}
.week .ev.deadline{background:var(--bad-soft);border-color:var(--bad)}
.week .ev.task{background:var(--warn-soft);border-color:var(--warn)}
.week .ev.other{background:var(--info-soft);border-color:var(--info)}
.week .nowline{position:absolute;left:0;right:0;height:2px;background:var(--bad);z-index:2}
.allday{display:flex;flex-wrap:wrap;gap:3px;padding:3px}
/* mail */
.mail-item{padding:11px 14px;border-bottom:1px solid var(--line);cursor:pointer}
.mail-item:hover{background:var(--panel-2)}
.mail-item.on{background:var(--accent-soft)}
.mail-item.unread .from{font-weight:700}
.mail-item.unread:before{content:"";float:left;width:7px;height:7px;border-radius:50%;background:var(--accent);margin:7px 7px 0 -10px}
.mail-item .from{display:flex;gap:8px}
.mail-item .from span:first-child{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mail-item .subj{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mail-item .prev{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.acct{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:10px;cursor:pointer}
.acct:hover{background:var(--panel-2)}
.acct.on{background:var(--accent-soft);color:var(--accent);font-weight:600}
iframe.mailframe{width:100%;min-height:480px;border:1px solid var(--line);border-radius:10px;background:#fff}
.msg{border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:10px;background:var(--panel)}
.msg.me{background:var(--accent-soft)}
/* modal & toasts */
.modal-bg{position:fixed;inset:0;background:rgba(20,10,35,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal{background:var(--panel);border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.3);width:min(640px,100%);max-height:90vh;display:flex;flex-direction:column}
.modal.wide{width:min(900px,100%)}
.modal .mh{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center}
.modal .mh h2{margin:0;flex:1}
.modal .mb{padding:16px 20px;overflow:auto}
.modal .mf{padding:12px 20px;border-top:1px solid var(--line);display:flex;gap:8px;justify-content:flex-end}
.toasts{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:8px;z-index:60}
.toast{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--accent);box-shadow:var(--shadow);border-radius:10px;padding:10px 14px;min-width:260px;max-width:380px;animation:tin .25s ease}
.toast.bad{border-left-color:var(--bad)}
.toast.ok{border-left-color:var(--ok)}
@keyframes tin{from{transform:translateY(10px);opacity:0}}
.drop{position:absolute;right:20px;top:54px;width:380px;max-height:70vh;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.18);z-index:40}
.drop .dh{display:flex;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--panel)}
.drop .ni{padding:10px 14px;border-bottom:1px solid var(--line);cursor:pointer}
.drop .ni:hover{background:var(--panel-2)}
.drop .ni.unread{background:var(--accent-soft)}
.course-card{border-radius:14px;border:1px solid var(--line);background:var(--panel);overflow:hidden;cursor:pointer;box-shadow:var(--shadow)}
.course-card:hover{border-color:var(--accent)}
.course-card .band{height:64px;padding:12px 14px;color:#fff;font-weight:700;display:flex;align-items:flex-end}
.course-card .cb{padding:10px 14px}
details.mod{border:1px solid var(--line);border-radius:10px;margin-bottom:8px;background:var(--panel)}
details.mod summary{padding:10px 14px;cursor:pointer;font-weight:600}
details.mod .mi{padding:7px 14px 7px 28px;border-top:1px solid var(--line);display:flex;gap:8px;align-items:center}
table.tbl{width:100%;border-collapse:collapse}
table.tbl th{text-align:left;font-size:12px;color:var(--muted);font-weight:600;padding:8px;border-bottom:1px solid var(--line)}
table.tbl td{padding:9px 8px;border-bottom:1px solid var(--line);vertical-align:top}
table.tbl tr:hover td{background:var(--panel-2)}
.kbd{font-size:11px;border:1px solid var(--line);border-radius:5px;padding:0 5px;background:var(--panel-2)}
.setting-sec{margin-bottom:18px}
.feed-row,.acct-row{display:grid;gap:8px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:10px;margin-bottom:8px;background:var(--panel-2)}
.feed-row{grid-template-columns:150px 1fr 130px auto auto}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block;background:var(--muted)}
.dot.ok{background:var(--ok)}.dot.bad{background:var(--bad)}
.kpi{display:flex;gap:12px}
.kpi > div{flex:1;background:var(--panel-2);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.kpi b{display:block;font-size:22px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:10px;border:2px solid var(--bg)}

/* recorder */
.rec-ind{padding:4px 12px;border-radius:999px;background:var(--bad-soft);color:var(--bad)!important;font-weight:600;font-variant-numeric:tabular-nums;text-decoration:none!important}
.rec-ind.paused{background:var(--warn-soft);color:var(--warn)!important}
.rec-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.rec-card.live{border-color:var(--bad)}
.btn.rec-go{background:var(--bad);border-color:var(--bad);color:#fff}
.rec-dot{width:12px;height:12px;border-radius:50%;background:var(--bad);display:inline-block;animation:blink 1.2s infinite}
.rec-dot.paused{background:var(--warn);animation:none}
@keyframes blink{50%{opacity:.25}}
.meter{width:140px;height:8px;border-radius:9px;background:var(--panel-2);border:1px solid var(--line);overflow:hidden}
.meter i{display:block;height:100%;background:linear-gradient(90deg,var(--ok),var(--gold),var(--bad));transition:width .15s}
.live-cap{min-height:44px;padding:10px 12px;border-radius:10px;background:var(--panel-2);font-size:15px;line-height:1.5;color:var(--muted);font-style:italic}
.seg-list{max-height:340px;overflow:auto;margin-top:8px}
.seg-list.big{max-height:none}
.seg{display:flex;gap:10px;padding:8px 4px;border-bottom:1px solid var(--line)}
.seg:last-child{border-bottom:none}
.seg.pending{opacity:.6}
.seg.err .en{color:var(--bad)}
.seg-t{font-variant-numeric:tabular-nums;font-size:12px;color:var(--accent);min-width:46px;padding-top:2px;cursor:pointer}
.seg-x{flex:1;min-width:0}
.seg .en{line-height:1.6}
.seg .zh{color:var(--muted);margin-top:3px;line-height:1.6}
.seg-b{font-size:10px;padding:0 5px;border-radius:5px;background:var(--panel-2);border:1px solid var(--line);color:var(--muted);vertical-align:middle}
.seg-b.ai{background:var(--accent-soft);color:var(--accent);border-color:transparent}

/* classroom 3-pane */
.split.focus .pane-l{display:none}
.split.focus .pane-r{padding:14px 16px}
.cr-bar{margin-bottom:10px;gap:10px}
.cr-timer{font-variant-numeric:tabular-nums;font-size:18px}
.seg-tabs{display:inline-flex;background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:3px;gap:2px}
.seg-tabs a{padding:4px 12px;border-radius:8px;color:var(--muted);text-decoration:none!important;font-size:13px;cursor:pointer;white-space:nowrap}
.seg-tabs a.on{background:var(--panel);color:var(--accent);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.classroom{display:grid;gap:12px;height:calc(100vh - 262px);min-height:480px}
.split.focus .classroom{height:calc(100vh - 236px)}
.cpane{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-height:0;min-width:0;box-shadow:var(--shadow)}
.cpane-h{display:flex;align-items:center;gap:6px;padding:8px 12px;border-bottom:1px solid var(--line);flex:none}
.cpane-b{flex:1;min-height:0;overflow:auto;position:relative}
.ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
iframe.slides{width:100%;height:100%;border:0;display:block;background:#525659}
.drop-zone.drag{outline:3px dashed var(--accent);outline-offset:-8px;background:var(--accent-soft)}
.rec-fill .rec-card{height:100%;display:flex;flex-direction:column;border:none;box-shadow:none;border-radius:0;min-height:0}
.rec-fill .seg-list{flex:1;max-height:none;min-height:0}
.rec-fill .meter{width:80px}
.kp{display:flex;gap:10px;padding:9px 12px;border-bottom:1px solid var(--line);align-items:flex-start}
.kp:hover{background:var(--panel-2)}
.kp .x{opacity:0}.kp:hover .x{opacity:1}
.kp-i{font-size:18px;line-height:1.2}
#cp-ai .cpane-b{display:flex;flex-direction:column}
.ask-log{flex:1;overflow:auto;padding:10px 12px;display:flex;flex-direction:column;gap:8px;min-height:0}
.bub{padding:8px 12px;border-radius:12px;max-width:92%;line-height:1.6;font-size:13.5px}
.bub.me{align-self:flex-end;background:var(--accent);color:#fff}
.bub.ai{align-self:flex-start;background:var(--panel-2);border:1px solid var(--line)}
.bub.ai p{margin:.2em 0}
.ask-in{padding:10px 12px;border-top:1px solid var(--line);flex:none}

/* slide viewer */
.sv{display:flex;flex-direction:column;background:#3b3b40}
.sv-stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:10px;overflow:hidden;cursor:pointer}
.sv-stage > img{max-width:100%;max-height:100%;object-fit:contain;box-shadow:0 4px 20px rgba(0,0,0,.4);background:#fff}
.sv-bar{display:flex;align-items:center;gap:8px;padding:6px 10px;background:var(--panel);border-top:1px solid var(--line);flex:none}
.sv-thumbs{flex:none;display:flex;gap:8px;overflow-x:auto;padding:8px;background:var(--panel-2);border-top:1px solid var(--line)}
.sv-t{flex:none;width:120px;cursor:pointer;border:2px solid transparent;border-radius:6px;position:relative;background:#fff}
.sv-t.on{border-color:var(--accent)}
.sv-t img{width:100%;display:block;border-radius:4px}
.sv-t span{position:absolute;right:4px;bottom:2px;font-size:11px;background:rgba(0,0,0,.6);color:#fff;padding:0 5px;border-radius:4px}
.pp-slide{position:relative;width:100%;max-height:100%;background:#fff;color:#222;container-type:inline-size;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.4);font-family:Calibri,"Segoe UI","Microsoft YaHei",sans-serif}
.pp-slide.mini{box-shadow:none;pointer-events:none}
.pp-box{position:absolute;overflow:hidden;line-height:1.2}
.pp-title{display:flex;flex-direction:column;justify-content:center}
.pp-p{margin:.15em 0;white-space:pre-wrap}
.pp-bu{display:inline-block;width:1em}
.pp-img{position:absolute;object-fit:contain}
.pp-tbl{border-collapse:collapse;width:100%;font-size:1.4cqw}
.pp-tbl td{border:1px solid #bbb;padding:.3em .5em}
.gem-setup{border:1px solid var(--accent);background:var(--accent-soft);border-radius:12px;padding:12px 14px;text-align:left}
.gem-setup.compact{font-size:13px}
.upd-bar{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;z-index:70;background:var(--panel);border:1px solid var(--accent);box-shadow:var(--shadow);border-radius:999px;padding:8px 10px 8px 18px;display:flex;gap:12px;align-items:center}
.pp-box.pp-mid,.pp-title{display:flex;flex-direction:column;justify-content:center}
.pp-box.pp-bot{display:flex;flex-direction:column;justify-content:flex-end}
.pp-title.pp-bot{justify-content:flex-end}
.pane-toggles{display:inline-flex;gap:12px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:4px 12px}
.pane-toggles .chk{margin:0}

/* 我的课程 */
.cc2 .band{justify-content:space-between;align-items:flex-end;font-size:15px;letter-spacing:.3px}
.cc2 .live-dot{font-size:11px;font-weight:600;background:rgba(255,255,255,.22);padding:2px 8px;border-radius:999px}
.cc-stats{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:6px;margin-top:10px}
.cc-stats>div{background:var(--panel-2);border-radius:8px;padding:6px 8px;display:flex;flex-direction:column;gap:2px;min-width:0}
.cc-stats span{font-size:11px;color:var(--muted)}
.cc-stats b{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.course-hero{border-radius:16px;padding:18px 22px;color:#fff;box-shadow:var(--shadow)}
.course-hero h1{margin:2px 0 12px;font-size:22px;color:#fff}
.course-hero .ch-code{margin-top:8px;font-weight:700;opacity:.85;letter-spacing:.4px}
.course-hero .btn{background:#fff;color:#222;border-color:transparent}
.course-hero .btn.ghost-w{background:rgba(255,255,255,.16);color:#fff}

/* web build: own palette (ink + highlighter) */
:root{--accent:#2b44b0;--accent-2:#4a63d6;--accent-soft:#e8ecfb;--gold:#ffd23f;--bg:#f5f6f9;--panel-2:#f9fafc;--line:#e3e6ee;--text:#18203a;--muted:#626a80}
:root[data-theme="dark"]{--accent:#8ea2ff;--accent-2:#a9b8ff;--accent-soft:#1f2747;--gold:#ffd23f;--bg:#11141c;--panel:#181c27;--panel-2:#1d2230;--line:#2a3042;--text:#e8ebf4;--muted:#9aa2b8}
.hero{background:linear-gradient(120deg,#16213a,#2b44b0)}
.web-banner{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:10px 24px 0;padding:10px 14px;border:1px solid var(--line);background:var(--panel);border-radius:12px;font-size:13px}
.web-banner .wb-t{flex:1;min-width:220px}.web-banner .wb-a{display:flex;gap:6px}