/* ==========================================================================
   v4.0 样式补充：主站业务（课程广场 / 考试中心 / 社团班 / 名单导入 / 看板）
   + A 档子系统（信息科技课程播放器 / 码上闯关 / 流程图 / 海报工坊 / Office 模拟）
   仅新增类名，均以 v4- / of- / fl- / it- / cd- / po- 前缀，避免与既有样式冲突。
   ========================================================================== */

/* ---------- 通用小件 ---------- */
.v4-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.v4-sub{font-size:12.5px;color:var(--sub)}
.v4-sec{margin-top:14px}
.v4-hd{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.v4-hd h3{margin:0}
.v4-pill{display:inline-flex;align-items:center;gap:6px;background:var(--blue-l);color:#1b3a6b;
  border-radius:999px;padding:4px 11px;font-size:12.5px;font-weight:600}
.v4-empty{padding:22px;text-align:center;color:var(--sub);font-size:13px}
.v4-badge{display:inline-block;border-radius:7px;padding:2px 8px;font-size:12px;font-weight:600}
.v4-badge.g{background:#e7f8f0;color:#0e7a51}
.v4-badge.o{background:#fef3e2;color:#a35a06}
.v4-badge.r{background:#fdeceb;color:#a5251a}
.v4-badge.b{background:var(--blue-l);color:#1b3a6b}
.v4-badge.gray{background:#f1f3f7;color:#5b6472}

/* ---------- 课程广场 ---------- */
.v4-cgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px}
@media(max-width:900px){.v4-cgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.v4-cgrid{grid-template-columns:1fr}}
.v4-course{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;transition:.15s}
.v4-course:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(24,52,105,.11)}
.v4-course .cv{height:76px;display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;color:#fff;font-size:30px}
.v4-course .cv b{font-size:13px;font-weight:600;background:rgba(255,255,255,.22);
  border-radius:999px;padding:3px 10px}
.v4-course .cb{padding:12px 14px;flex:1}
.v4-course .cb .t{font-weight:600;font-size:15px}
.v4-course .cb .d{font-size:12.5px;color:var(--sub);margin-top:5px;line-height:1.55}
.v4-course .cf{padding:10px 14px;border-top:1px solid var(--line);display:flex;
  align-items:center;justify-content:space-between;gap:8px}
.v4-bar{height:7px;border-radius:999px;background:#eef1f7;overflow:hidden;margin-top:9px}
.v4-bar i{display:block;height:100%;background:linear-gradient(90deg,#4f8cff,#2b6cff);border-radius:999px}

.v4-chap{display:flex;align-items:center;gap:12px;padding:11px 13px;border:1px solid var(--line);
  border-radius:10px;margin-top:8px;background:#fff;transition:.14s;cursor:pointer}
.v4-chap:hover{border-color:#bcd2ff;background:#fafcff}
.v4-chap .no{width:30px;height:30px;flex:0 0 30px;border-radius:8px;background:#f0f4fd;color:#3a5795;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12.5px}
.v4-chap.done .no{background:#e7f8f0;color:#0e7a51}
.v4-chap .tx{flex:1;min-width:0}
.v4-chap .tx b{font-size:14px;font-weight:600;display:block;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.v4-chap .tx span{font-size:12px;color:var(--sub)}

/* ---------- 考试中心 ---------- */
.v4-exam{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);padding:14px;display:flex;flex-direction:column;gap:10px}
.v4-exam .et{font-weight:600;font-size:15px}
.v4-exam .em{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--sub)}
.v4-qbox{border:1px solid var(--line);border-radius:12px;background:#fff;padding:14px;margin-top:12px}
.v4-qbox .qh{display:flex;gap:9px;align-items:flex-start;font-weight:600;font-size:14.5px}
.v4-qbox .qn{flex:0 0 24px;height:24px;border-radius:7px;background:var(--blue-l);color:#1b3a6b;
  display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700}
.v4-qbox .opts{margin-top:11px;display:flex;flex-direction:column;gap:8px}
.v4-qbox .opts label{display:flex;gap:9px;align-items:flex-start;border:1px solid var(--line);
  border-radius:9px;padding:9px 11px;cursor:pointer;font-size:13.5px;transition:.13s;background:#fff}
.v4-qbox .opts label:hover{border-color:#bcd2ff;background:#fafcff}
.v4-qbox .opts label.on{border-color:#7fa8ff;background:#eef4ff}
.v4-qbox .opts label.ok{border-color:#7ddcae;background:#effbf5}
.v4-qbox .opts label.bad{border-color:#f3a9a2;background:#fdf1f0}
.v4-qbox .opts input{margin-top:2px;accent-color:var(--blue)}
.v4-qbox .an{margin-top:10px;font-size:12.5px;color:#0e7a51;background:#effbf5;
  border-radius:8px;padding:8px 11px}
.v4-score{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.v4-score .big{font-size:40px;font-weight:800;line-height:1}
.v4-miss{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.v4-miss span{background:#fdf1f0;color:#a5251a;border-radius:999px;padding:3px 10px;font-size:12.5px}

/* ---------- 社团班 ---------- */
.v4-club{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);padding:14px}
.v4-club .ct{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px}
.v4-code{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;letter-spacing:2px;
  background:#f4f7fd;border:1px dashed #bcd2ff;color:#1b3a6b;border-radius:9px;padding:6px 12px;
  font-size:17px}
.v4-mem{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.v4-mem .m{display:inline-flex;align-items:center;gap:6px;background:#f4f7fd;border-radius:999px;
  padding:4px 6px 4px 11px;font-size:12.5px}
.v4-mem .m button{border-radius:999px;width:18px;height:18px;line-height:1;background:#dfe6f3;
  color:#5b6472;font-size:12px}

/* ---------- 名单导入 ---------- */
.v4-import textarea{width:100%;min-height:190px;font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:13px;line-height:1.7;resize:vertical}
.v4-preview{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.v4-preview span{background:#eef4ff;color:#1b3a6b;border-radius:999px;padding:3px 10px;font-size:12.5px}

/* ---------- 数据看板 ---------- */
.v4-dash{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media(max-width:900px){.v4-dash{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.v4-dash{grid-template-columns:1fr}}
.v4-rank{display:flex;align-items:center;gap:11px;padding:9px 4px;border-bottom:1px dashed var(--line)}
.v4-rank:last-child{border-bottom:none}
.v4-rank .rk{width:24px;height:24px;flex:0 0 24px;border-radius:50%;background:#f0f4fd;color:#3a5795;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.v4-rank .rk.t1{background:#fff3d6;color:#a35a06}
.v4-rank .rk.t2{background:#eef1f6;color:#5b6472}
.v4-rank .rk.t3{background:#fbe9dd;color:#a45a2a}

/* ---------- 信息科技：课程播放器 ---------- */
.it-shell{margin-top:12px}
.it-slides{display:grid;gap:12px}
.it-slide{background:linear-gradient(160deg,#f7faff,#eef4ff);border:1px solid #dbe6fb;
  border-radius:13px;padding:16px}
.it-slide .ic{font-size:26px}
.it-slide h4{margin:7px 0 0;font-size:15.5px}
.it-slide p{margin:8px 0 0;font-size:13.5px;line-height:1.75}
.it-ex{margin-top:11px;background:#fff;border:1px dashed #c9d8f5;border-radius:10px;padding:11px 13px}
.it-ex b{font-size:13px;color:#1b3a6b}
.it-ex ul{margin:7px 0 0;padding-left:18px;font-size:13px;line-height:1.8}
.it-nav{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;
  flex-wrap:wrap}
.it-dots{display:flex;gap:5px;flex-wrap:wrap}
.it-dots i{width:8px;height:8px;border-radius:50%;background:#d7dfee;display:block}
.it-dots i.on{background:var(--blue);width:20px;border-radius:999px}
.it-units{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.it-units button{background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px;
  font-size:12.5px;cursor:pointer}
.it-units button.on{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}

/* ---------- 码上闯关 ---------- */
.cd-grid{display:inline-grid;gap:5px;margin-top:10px}
.cd-grid i{width:44px;height:44px;border-radius:9px;background:#f2f5fb;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:19px;font-style:normal}
.cd-grid i.w{background:#3b4759;border-color:#3b4759}
.cd-grid i.g{background:#e7f8f0;border-color:#9adcbb}
.cd-grid i.p{background:#eef4ff;border-color:#7fa8ff}
.cd-prog{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.cd-prog .b{display:inline-flex;align-items:center;gap:7px;background:#eef4ff;color:#1b3a6b;
  border-radius:9px;padding:6px 10px;font-size:13px;font-weight:600}
.cd-prog .b em{font-style:normal;cursor:pointer;background:#dbe6fb;border-radius:5px;padding:0 5px}
.cd-stars{font-size:17px;letter-spacing:2px}

/* ---------- 流程图 ---------- */
.fl-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:14px;margin-top:12px}
@media(max-width:900px){.fl-wrap{grid-template-columns:1fr}}
.fl-canvas{position:relative;min-height:400px;background:
  linear-gradient(#eef2f9 1px,transparent 1px) 0 0/22px 22px,
  linear-gradient(90deg,#eef2f9 1px,transparent 1px) 0 0/22px 22px,#fff;
  border:1px solid var(--line);border-radius:13px;overflow:hidden}
.fl-node{position:absolute;min-width:96px;padding:9px 13px;border-radius:10px;background:#fff;
  border:2px solid #7fa8ff;font-size:13px;font-weight:600;text-align:center;cursor:grab;
  box-shadow:0 3px 10px rgba(24,52,105,.10);user-select:none;color:#1b3a6b}
.fl-node.sel{border-color:#2b6cff;box-shadow:0 0 0 4px rgba(43,108,255,.16)}
.fl-node.term{border-radius:999px;background:#eef4ff}
.fl-node.dec{border-color:#f79009;background:#fffaf0;color:#a35a06;transform:rotate(0deg)}
.fl-node.done{border-color:#9adcbb;background:#effbf5;color:#0e7a51}
.fl-pal{display:flex;flex-direction:column;gap:9px}
.fl-pal button{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;
  text-align:left;font-size:13px;cursor:pointer}
.fl-pal button:hover{border-color:#bcd2ff;background:#fafcff}
.fl-svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}

/* ---------- 海报工坊 ---------- */
.po-wrap{display:grid;grid-template-columns:340px 1fr;gap:14px;margin-top:12px}
@media(max-width:900px){.po-wrap{grid-template-columns:1fr}}
.po-stage{position:relative;width:100%;border-radius:12px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow)}
.po-stage .slot{position:absolute;color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.45);
  overflow:hidden;line-height:1.15}
.po-stage .imgs{position:absolute;border:1px dashed rgba(255,255,255,.5);display:flex;
  align-items:center;justify-content:center;font-size:12px;color:rgba(255,255,255,.75);
  background-size:cover;background-position:center}
.po-swatches{display:flex;gap:7px;flex-wrap:wrap;margin-top:7px}
.po-swatches i{width:26px;height:26px;border-radius:8px;display:block;cursor:pointer;
  border:2px solid #fff;box-shadow:0 0 0 1px var(--line)}
.po-swatches i.on{box-shadow:0 0 0 2px var(--blue)}

/* ---------- Office 模拟 ---------- */
.of-shell{margin-top:12px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.of-tool{display:flex;flex-wrap:wrap;gap:5px;padding:8px 10px;background:#f6f8fc;
  border-bottom:1px solid var(--line);align-items:center}
.of-tool button{background:#fff;border:1px solid var(--line);border-radius:7px;padding:5px 10px;
  font-size:12.5px;cursor:pointer}
.of-tool button:hover{border-color:#bcd2ff;background:#fafcff}
.of-tool button.on{background:var(--blue);border-color:var(--blue);color:#fff}
.of-tool .sep{width:1px;height:20px;background:var(--line);margin:0 3px}
.of-doc{min-height:280px;padding:18px 20px;font-size:14px;line-height:1.8;outline:none}
.of-doc h1{margin:0 0 8px;font-size:23px}
.of-doc img{max-width:100%;border-radius:8px}
.of-gridwrap{overflow:auto;max-height:420px}
table.of-grid{border-collapse:collapse;width:100%;font-size:13px}
table.of-grid th,table.of-grid td{border:1px solid var(--line);padding:0;min-width:74px;height:30px}
table.of-grid th{background:#f4f7fd;font-weight:600;text-align:center;color:#5b6472;height:26px}
table.of-grid td input{width:100%;height:100%;border:none;padding:6px 8px;background:none;font-size:13px}
table.of-grid td input:focus{background:#eef4ff;outline:2px solid #7fa8ff;outline-offset:-2px}
table.of-grid th.rowh{background:#f4f7fd;text-align:center;color:#5b6472;min-width:34px;width:34px}
.of-slide{aspect-ratio:16/9;background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:26px 30px;display:flex;flex-direction:column;justify-content:center;gap:10px;
  box-shadow:var(--shadow);cursor:text}
.of-slide h2{margin:0;font-size:26px}
.of-slide p{margin:0;font-size:15px;color:var(--sub)}
.of-slide .ph{border:1px dashed var(--line);border-radius:9px;flex:1;display:flex;
  align-items:center;justify-content:center;color:var(--sub);font-size:13px;background:#fafbfe}
.of-checks{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.of-checks .ck{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);
  border-radius:10px;padding:9px 12px;background:#fff;font-size:13.5px}
.of-checks .ck.ok{border-color:#9adcbb;background:#effbf5}
.of-checks .ck .ic{flex:0 0 20px;height:20px;border-radius:50%;background:#eef1f7;color:#5b6472;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.of-checks .ck.ok .ic{background:#16a37b;color:#fff}

@media print{
  .v4-tabs,.of-tool,.fl-pal,.it-nav{display:none!important}
}

/* ==========================================================================
   v4.0 子系统样式（v4_sub.js：信息科技课程 / 码上闯关 / 流程图 / 海报工坊 / Office 模拟）
   ========================================================================== */
.v4-p{margin:7px 0;font-size:13.5px;line-height:1.8;color:var(--text)}
.v4-sec{margin-top:14px}

/* ---------- 信息科技课程播放器 ---------- */
.it-slide{background:linear-gradient(160deg,#f7faff,#eef4ff);border:1px solid #dbe6fb;
  border-radius:12px;padding:14px 16px;margin-top:12px}
.it-sd-hd{display:flex;align-items:center;gap:9px}
.it-ico{font-size:24px}
.it-sd-hd b{font-size:15.5px}
.it-ex{margin-top:10px;background:#fff;border:1px dashed #c9d8f5;border-radius:10px;padding:11px 13px}
.it-ex-t{font-size:13px;font-weight:700;color:#1b3a6b}
.it-ex ul{margin:7px 0 0;padding-left:18px;font-size:13px;line-height:1.8}
.it-tip{margin-top:10px;background:#fff8e6;border-left:3px solid #f0b429;border-radius:8px;
  padding:9px 12px;font-size:13px;color:#7a5200;line-height:1.7}
.it-sd-ft{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}
.it-judge,.it-exp{margin-top:12px;border-top:1px dashed var(--line);padding-top:10px}
.it-jrow{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px dashed #eef1f7;flex-wrap:wrap}
.it-jt{flex:1;min-width:180px;font-size:13.5px;line-height:1.6}
.it-jr{font-size:12.5px;font-weight:700;min-width:64px}
.it-jr.ok{color:var(--green)}
.it-jr.no{color:var(--red)}
.it-exp-t{font-size:14px;font-weight:700;color:#1b3a6b;margin-bottom:4px}
.it-pool{display:flex;flex-wrap:wrap;gap:7px}
.it-item{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:13px;cursor:pointer}
.it-item.on{border-color:var(--blue);background:#eef4ff;color:var(--blue-d);font-weight:600}
.it-item.done{opacity:.45;cursor:default;text-decoration:line-through}
.it-grp{border:1px dashed #c9d8f5;border-radius:10px;padding:9px;min-height:72px;background:#fafcff}
.it-grp b{font-size:13px;color:#1b3a6b}
.it-glist{display:flex;flex-wrap:wrap;gap:6px;margin-top:7px}
.it-gtag{background:#eef4ff;color:#1b3a6b;border-radius:7px;padding:4px 9px;font-size:12.5px}
.it-gtag.ok{background:#effbf5;color:#0e7a51}
.it-gtag.no{background:#fdecec;color:#b42318}
.it-note{font-size:13px;color:var(--sub)}

/* ---------- 码上闯关 ---------- */
.cd-wrap{display:grid;grid-template-columns:250px 1fr;gap:14px;margin-top:14px;align-items:start}
.cd-side{max-height:660px;overflow:auto}
.cd-ch{font-size:12px;font-weight:700;color:var(--sub);margin:12px 0 6px;letter-spacing:.4px}
.cd-lv{border:1px solid var(--line);border-radius:10px;padding:8px 10px;margin-bottom:7px;
  cursor:pointer;background:#fff;transition:.15s}
.cd-lv:hover{border-color:#bcd2ff;background:#fafcff}
.cd-lv.on{border-color:var(--blue);background:#eef4ff}
.cd-lv b{display:block;font-size:13.5px}
.cd-lv span{display:block;font-size:12px;color:var(--sub);margin-top:3px;line-height:1.55}
.cd-map{position:relative;margin:12px auto 4px;border-radius:12px;background:#f8fafd;border:1px solid var(--line)}
.cd-cell{position:absolute;border-right:1px solid #eef1f7;border-bottom:1px solid #eef1f7}
.cd-cell.wall{background:#3b4759;border-color:#3b4759;border-radius:6px}
.cd-goal{position:absolute;display:flex;align-items:center;justify-content:center;font-size:22px;
  background:#e7f8f0;border-radius:8px}
.cd-bot{position:absolute;display:flex;align-items:center;justify-content:center;font-size:24px;
  color:var(--blue);transition:left .28s ease,top .28s ease,transform .28s ease}
.cd-pal{display:flex;flex-wrap:wrap;gap:8px}
.cd-pb{background:#fff;border:1px solid var(--line);border-radius:9px;padding:8px 13px;font-size:13px;cursor:pointer}
.cd-pb:hover{border-color:#bcd2ff;background:#fafcff}
.cd-pb.rp{border-color:#7a5af8;color:#5b3fd6}
.cd-pb.back{border-color:var(--orange);color:#a35a06}
.cd-prog{display:flex;flex-wrap:wrap;gap:8px;margin-top:11px;min-height:38px;align-items:flex-start}
.cd-prog.empty{color:var(--sub);font-size:13px;align-items:center}
.cd-b{display:inline-flex;align-items:center;background:#eef4ff;color:#1b3a6b;border-radius:8px;
  padding:6px 11px;font-size:13px}
.cd-blk{border:1px solid #d7c9ff;background:#f7f4ff;border-radius:10px;padding:8px 10px}
.cd-blk.on{border-color:#7a5af8;box-shadow:0 0 0 3px rgba(122,90,248,.14)}
.cd-rh{font-size:12.5px;color:#5b3fd6;font-weight:600;display:flex;align-items:center;gap:6px}
.cd-n{width:52px;border:1px solid #d7c9ff;border-radius:6px;padding:3px 6px;font-size:12.5px;text-align:center}
.cd-body{display:flex;flex-wrap:wrap;gap:6px;margin-top:7px;min-height:26px}
.cd-ph{font-size:12px;color:var(--sub)}
.cd-acts{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.cd-star{font-size:22px;letter-spacing:3px;color:#f0b429;margin-top:6px}
.cd-m.ok{color:var(--green)}
.cd-m.warn{color:var(--orange)}
.cd-m.bad{color:var(--red)}

/* ---------- 流程图 ---------- */
.fl-teach .fl-steps{margin:8px 0;padding-left:20px;font-size:13.5px;line-height:1.85}
.fl-req{margin-top:10px;background:#f7faff;border:1px solid #dbe6fb;border-radius:10px;
  padding:10px 13px;font-size:13px;line-height:1.75}
.fl-req ul{margin:6px 0 0;padding-left:18px}
.fl-stage{position:relative;margin-top:12px;border-radius:12px;overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(#eef2f9 1px,transparent 1px) 0 0/20px 20px,
    linear-gradient(90deg,#eef2f9 1px,transparent 1px) 0 0/20px 20px,#fbfcfe}
.fl-svg{position:absolute;left:0;top:0;pointer-events:none}
.fl-node{position:absolute;min-width:132px;padding:6px 8px;border-radius:10px;background:#fff;
  border:2px solid var(--line);box-shadow:var(--shadow);cursor:move;user-select:none}
.fl-tag{position:absolute;top:-11px;left:8px;font-size:11px;color:#fff;border-radius:6px;padding:1px 7px}
.fl-in{width:100%;border:1px solid var(--line);border-radius:6px;padding:4px 6px;font-size:12.5px;
  margin-top:2px;background:#fafcff}
.fl-x{position:absolute;top:-9px;right:-9px;width:18px;height:18px;border-radius:50%;background:var(--red);
  color:#fff;font-size:13px;line-height:17px;text-align:center;cursor:pointer}
.fl-port{position:absolute;right:-7px;top:50%;margin-top:-7px;width:14px;height:14px;border-radius:50%;
  background:var(--blue);border:2px solid #fff;cursor:crosshair}
.fl-elist{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.fl-etag{background:#eef4ff;color:#1b3a6b;border-radius:7px;padding:4px 9px;font-size:12.5px}
.fl-etag b{cursor:pointer;margin-left:6px;color:var(--red)}
.fl-res{margin-top:10px;display:flex;flex-direction:column;gap:6px}
.fl-ri{border:1px solid var(--line);border-radius:9px;padding:8px 11px;font-size:13px;background:#fff}
.fl-ri.ok{border-color:#9adcbb;background:#effbf5;color:#0e7a51}
.fl-ri.no{border-color:#f6c9c4;background:#fdf2f1;color:#b42318}

/* ---------- 海报工坊 ---------- */
.po-stage{position:relative;margin:12px auto 0;border-radius:12px;overflow:hidden;
  box-shadow:var(--shadow);border:1px solid var(--line)}
.po-bgi{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.po-slot-img{position:absolute;object-fit:cover}
.po-ph{position:absolute;display:flex;align-items:center;justify-content:center;
  background:rgba(120,140,180,.18);border:1px dashed rgba(90,110,150,.5);color:#5b6472;font-size:12px}
.po-txt{position:absolute;outline:none;line-height:1.2;overflow:hidden;word-break:break-word}
.po-txt:focus{box-shadow:0 0 0 2px rgba(43,108,255,.4)}
.po-ctrl{display:flex;gap:16px;flex-wrap:wrap;align-items:center;font-size:13px;margin-bottom:10px}
.po-ctrl input[type=color],.po-row input[type=color]{width:38px;height:26px;border:1px solid var(--line);
  border-radius:6px;background:#fff;padding:1px}
.po-slot{border:1px solid var(--line);border-radius:10px;padding:10px;margin-bottom:10px;background:#fbfcfe}
.po-sn{font-size:12.5px;font-weight:600;color:#1b3a6b;margin-bottom:6px}
.po-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px;font-size:12.5px;color:var(--sub);align-items:center}
.po-row input[type=number]{width:72px}

/* ---------- Office 模拟 ---------- */
.of-wrap{display:grid;grid-template-columns:330px 1fr;gap:14px;margin-top:14px;align-items:start}
.of-rules{margin:10px 0 12px;background:#f7faff;border:1px solid #dbe6fb;border-radius:10px;
  padding:10px 13px;font-size:12.5px}
.of-rules ul{margin:6px 0 0;padding-left:18px;line-height:1.8}
.of-tool{display:flex;flex-wrap:wrap;gap:6px;padding:8px 10px;background:#f6f8fc;
  border:1px solid var(--line);border-bottom:none;border-radius:10px 10px 0 0}
.of-tb{background:#fff;border:1px solid var(--line);border-radius:7px;padding:5px 11px;font-size:12.5px;cursor:pointer}
.of-tb:hover{border-color:#bcd2ff;background:#fafcff}
.of-paper{min-height:300px;padding:16px 18px;font-size:14px;line-height:1.85;outline:none;background:#fff;
  border:1px solid var(--line);border-radius:0 0 10px 10px}
.of-paper:empty:before{content:attr(data-ph);color:#aab4c4}
.of-paper h2{margin:0 0 8px;font-size:21px}
.of-paper img{max-width:100%;border-radius:8px;margin:6px 0}
.of-paper ul,.of-paper ol{padding-left:22px}
.of-xbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:2px 0 10px}
table.of-grid td{vertical-align:top}
.of-cell{min-width:76px;height:30px;padding:5px 8px;outline:none}
.of-cell:focus{background:#eef4ff;box-shadow:inset 0 0 0 2px #7fa8ff}
.of-ppt{display:grid;grid-template-columns:132px 1fr;gap:12px;margin-top:4px}
.of-thumbs{display:flex;flex-direction:column;gap:7px;max-height:440px;overflow:auto}
.of-thumb{border:1px solid var(--line);border-radius:8px;padding:7px 9px;background:#fff;cursor:pointer;
  display:flex;gap:8px;align-items:center}
.of-thumb.on{border-color:var(--blue);background:#eef4ff}
.of-thumb b{font-size:12px;color:var(--blue)}
.of-thumb span{font-size:12.5px;color:var(--sub);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.of-stage-wrap{border:1px solid var(--line);border-radius:10px;overflow:hidden}
.of-slide{min-height:300px;background:#fff;padding:22px 26px;display:flex;flex-direction:column;gap:12px}
.of-ttl{border:none;border-bottom:1px dashed var(--line);font-size:24px;padding:6px 2px;outline:none;
  font-family:inherit}
.of-body{border:1px solid var(--line);border-radius:9px;padding:10px;font-size:14px;line-height:1.8;
  resize:vertical;outline:none;font-family:inherit}
.of-extra{border:1px dashed #c9d8f5;border-radius:9px;padding:10px;font-size:13px;color:#1b3a6b;background:#fafcff}

@media (max-width:900px){
  .cd-wrap,.of-wrap{grid-template-columns:1fr}
  .po-wrap,.fl-wrap{grid-template-columns:1fr}
}


/* ===== 课程广场：精品课程 / 教材课时 分段切换（醒目化） ===== */
.cv-seg{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}
.cv-segbtn{display:flex;align-items:center;gap:12px;flex:1 1 240px;min-width:220px;text-align:left;padding:14px 16px;border-radius:14px;border:2px solid #e3e9f2;background:#fff;cursor:pointer;transition:.18s;font:inherit}
.cv-segbtn:hover{border-color:#b9cdf3;box-shadow:0 6px 18px rgba(43,108,255,.10)}
.cv-segbtn .ic{font-size:26px;line-height:1}
.cv-segbtn .tx{display:flex;flex-direction:column;gap:3px}
.cv-segbtn .tx b{font-size:15.5px;color:#1f2b3a}
.cv-segbtn .tx i{font-style:normal;font-size:12px;color:#8a95a5}
.cv-segbtn.on{border-color:#2b6cff;background:linear-gradient(135deg,#f2f7ff,#eaf2ff)}
.cv-segbtn.on .tx b{color:#2b6cff}
@media (max-width:640px){ .cv-segbtn{flex:1 1 100%} }