/* =============================================================
 * V0.33 UI 大改层 — 全盘打磨 + 解决你提出的 6 个具体问题
 * 在 v032 之后加载，做硬改动
 * ============================================================= */

/* ---------- 1. 顶部 Full Question 控件 — 整个移除 ---------- */
.ial-v030 .questionViewModes{display:none!important}
.ial-v030 .viewModeBtn.legacyThisPartMode{display:none!important}

/* ---------- 2. sidebar 滚动露白 — 锁死 sticky + 渐变兜底 ---------- */
.ial-v030 .app{min-height:100vh;display:flex;align-items:stretch;background:transparent}
.ial-v030 .sidebar{
  position:fixed;left:0;top:0;bottom:0;width:252px;z-index:20;
  background:linear-gradient(180deg,#0c2340 0%,#08182b 100%);
  box-shadow:1px 0 0 rgba(255,255,255,.04);
  display:flex;flex-direction:column;
}
.ial-v030 .sidebar::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:80px;pointer-events:none;
  background:linear-gradient(180deg,rgba(8,24,43,0),rgba(8,24,43,.92));
}
/* sidebar 内容区底色兜底 */
.ial-v030 .sidebar nav,.ial-v030 .sidebar .nav,.ial-v030 .sidebar .sidebarCollapseBtn{background:transparent}

/* ---------- 3. 题目工作区：短题目不强制等高、灰板去掉、中心化 ---------- */
.ial-v030.workspace-mode .questionPaper{
  height:auto!important;min-height:0!important;flex:0 1 auto!important;
  background:transparent!important;border:none!important;box-shadow:none!important;
  overflow:visible!important;
}
.ial-v030.workspace-mode .questionPaperInner{
  padding:18px 22px 22px;background:#fdfcf8;
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:0 1px 2px rgba(15,23,42,.04);
}
.ial-v030.workspace-mode .questionPaperInner img,
.ial-v030.workspace-mode .questionPaperInner .pdfRegionHost img{
  background:#fff;border-radius:6px;box-shadow:0 1px 3px rgba(0,0,0,.05);
}
.ial-v030.workspace-mode .workspaceGrid{
  align-items:flex-start!important;  /* 短题目时不强制等高 */
  gap:14px;
}
.ial-v030.workspace-mode .workingPanel{
  height:auto!important;min-height:0!important;flex:1 1 auto;
}
/* 题目图在 16:9 比例下不要太宽，限制最大宽度 */
.ial-v030.workspace-mode .questionPaperInner > img,
.ial-v030.workspace-mode .questionPaperInner .pdfRegionHost,
.ial-v030.workspace-mode .realSourceCard{max-width:760px;margin:0 auto}
.ial-v030.workspace-mode .realSourceCard{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--c-line)}

/* ---------- 4. v027PaperViewTabs 升级为英文 Q/A 切换 ---------- */
.ial-v027 .v027PaperViewTabs,
.ial-v030 .v027PaperViewTabs{
  display:inline-flex;align-items:center;padding:4px;border-radius:var(--r-md);
  background:var(--c-line-2);gap:2px;
}
.ial-v027 .v027PaperViewTabs button,
.ial-v030 .v027PaperViewTabs button{
  border:0;background:transparent;padding:8px 16px;font-size:12px;font-weight:700;
  color:var(--c-ink-3);border-radius:8px;cursor:pointer;min-height:36px;
  transition:all .15s ease;
}
.ial-v027 .v027PaperViewTabs button:hover,
.ial-v030 .v027PaperViewTabs button:hover{color:var(--c-ink)}
.ial-v027 .v027PaperViewTabs button.active,
.ial-v030 .v027PaperViewTabs button.active{
  background:#fff;color:var(--c-primary);box-shadow:var(--s-sm);
}
.ial-v027 .v027PaperViewTabs button.active b,
.ial-v030 .v027PaperViewTabs button.active b{color:var(--c-primary)}

/* ---------- 5. 移动端：竖屏 · 题目原卷在上 + 手写工作区在下 + 手指可写 ---------- */
@media(max-width:760px){
  /* 保留手写能力：隐藏仅 inkInfo/多余装饰 */
  body.workspace-mode .inkDeviceBadge,
  body.workspace-mode .inkInfo{display:none!important}
  /* 竖屏单列：题目区在上(可滚) + 工作区(手写)在下 */
  body.workspace-mode #workspace .workspaceGrid{
    display:flex!important;flex-direction:column!important;gap:10px;padding:10px;
    background:transparent;
  }
  body.workspace-mode #workspace .questionPaper,
  body.workspace-mode #workspace .workingPanel{
    height:auto!important;min-height:0!important;max-height:none!important;
    background:transparent!important;border:none!important;box-shadow:none!important;
    padding:0!important;flex:none!important;
  }
  body.workspace-mode #workspace .questionPaper{order:1;max-height:42dvh!important;overflow:auto}
  body.workspace-mode #workspace .workingPanel{order:2;display:flex!important;flex-direction:column;gap:8px}
  /* 手写画布单列全宽（pageRail 收起） */
  body.workspace-mode #workspace .inkWorkspace{display:block!important}
  body.workspace-mode #workspace .pageRail{display:none!important}
  body.workspace-mode #workspace .canvasStage{display:block!important;width:100%;overflow:auto;background:transparent!important;border:none!important}
  body.workspace-mode #workspace .paperCanvasWrap{max-width:640px;margin:0 auto}
  body.workspace-mode #workspace .workHead{display:flex!important;align-items:center;justify-content:space-between;padding:8px 0 4px}
  body.workspace-mode #workspace .workHead b{font-size:13px}
  body.workspace-mode #workspace .workHead span{display:none}
  /* Work / Mark Scheme 两个 tab（恢复显示，粘在题目下） */
  body.workspace-mode #workspace .v027WorkTabs{
    position:sticky;top:0;z-index:25;display:flex!important;
    background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:3px;gap:2px;
    margin:0 0 6px;
  }
  body.workspace-mode #workspace .v027WorkTabs button{
    flex:1;border:0;background:transparent;padding:9px 6px;font-size:12px;font-weight:700;
    color:var(--c-ink-3);border-radius:8px;
  }
  body.workspace-mode #workspace .v027WorkTabs button.active{background:#fff;color:var(--c-primary);box-shadow:var(--s-sm)}
  /* 工具栏可横滚 */
  body.workspace-mode #workspace .inkToolbar{display:flex!important;flex-wrap:nowrap;overflow-x:auto;gap:5px;padding:4px 2px;background:transparent!important;border:0!important}
  body.workspace-mode #workspace .inkToolbar .inkTool{font-size:11px;padding:7px 8px}
  body.workspace-mode #workspace .inkToolbar .inkTool span{display:none}
  body.workspace-mode #workspace .workspaceSubmit{display:flex!important;flex-wrap:wrap;gap:8px;padding:10px 0;border-top:1px solid var(--c-line-2)}
  /* MarkScheme pane 直接显示 */
  body.workspace-mode .v027MarkSchemePane{display:block!important;border-radius:var(--r-md);margin-top:10px}
}

/* ---------- 6. Summary 二级选择（CSS 部分）---------- */
.summaryShell .summaryChapterList{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;
}
.summaryShell .summaryChapterList .summaryChapterCard{
  display:flex;align-items:center;gap:14px;padding:18px 20px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:0 1px 3px rgba(15,23,42,.04);cursor:pointer;transition:all .15s;
  text-align:left;border:0;font-family:inherit;
}
.summaryShell .summaryChapterList .summaryChapterCard:hover{
  border-color:#cad5ea;box-shadow:0 4px 14px rgba(15,23,42,.08);transform:translateY(-1px);
}
.summaryShell .summaryChapterList .summaryChapterCard .num{
  flex:none;width:40px;height:40px;border-radius:50%;
  background:var(--c-primary-50);color:var(--c-primary-2);
  display:grid;place-items:center;font-size:13px;font-weight:800;
}
.summaryShell .summaryChapterList .summaryChapterCard .chTitle{
  font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.3;
}
.summaryShell .summaryChapterList .summaryChapterCard .chSub{
  margin-top:2px;font-size:11px;color:var(--c-muted);
}
.summaryShell .summaryChapterList .summaryChapterCard .arrow{
  margin-left:auto;color:var(--c-muted-2);transition:transform .15s;
}
.summaryShell .summaryChapterList .summaryChapterCard:hover .arrow{transform:translateX(3px);color:var(--c-primary)}
.summaryBackBtn{
  display:inline-flex;align-items:center;gap:6px;padding:8px 14px;
  background:transparent;border:1.5px solid var(--c-line);border-radius:var(--r-pill);
  font-size:12px;font-weight:700;color:var(--c-ink-3);cursor:pointer;margin-bottom:14px;
}
.summaryBackBtn:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ---------- 7. Home 整体打磨 ---------- */
.ial-v030 .home-shell{
  max-width:1280px;margin-inline:auto;
}
.ial-v030 .home-shell .hero{
  position:relative;border-radius:var(--r-xl);
  background:linear-gradient(135deg,#0c2340 0%,#1a3a78 60%,#2a55c2 100%);
  color:#fff;padding:32px 36px;display:grid;grid-template-columns:1.4fr 1fr;gap:24px;
  box-shadow:0 12px 36px rgba(12,35,64,.25);overflow:hidden;
}
.ial-v030 .home-shell .hero::after{
  content:'';position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.08),transparent 70%);
  pointer-events:none;
}
.ial-v030 .home-shell .hero h2{font-size:30px;font-weight:800;line-height:1.2;margin:0 0 8px;letter-spacing:-.02em}
.ial-v030 .home-shell .hero p{color:rgba(255,255,255,.85);font-size:14px;line-height:1.55;margin:0 0 18px;max-width:560px}
.ial-v030 .home-shell .heroBtns{display:flex;gap:8px;flex-wrap:wrap}
.ial-v030 .home-shell .heroBtns .btn.primary{background:#fff;color:#0c2340;border:0}
.ial-v030 .home-shell .heroBtns .btn.primary:hover{background:#f1f5ff}
.ial-v030 .home-shell .heroBtns .btn:not(.primary){background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.18)}
.ial-v030 .home-shell .heroBtns .btn:not(.primary):hover{background:rgba(255,255,255,.2)}
.ial-v030 .home-shell .examCard{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);padding:20px;backdrop-filter:blur(8px);
}
.ial-v030 .home-shell .metric{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:16px 18px;box-shadow:0 1px 3px rgba(15,23,42,.04)}
.ial-v030 .home-shell .metric .label{color:var(--c-muted);font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;margin-bottom:8px}
.ial-v030 .home-shell .metric b{font-size:26px;font-weight:800;color:var(--c-ink);line-height:1;letter-spacing:-.02em}
.ial-v030 .home-shell .metric small{color:var(--c-muted);font-size:11px;margin-top:4px;display:block}
.ial-v030 .home-shell .quick{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:18px;box-shadow:0 1px 3px rgba(15,23,42,.04);transition:all .15s}
.ial-v030 .home-shell .quick:hover{border-color:#cad5ea;box-shadow:0 4px 14px rgba(15,23,42,.08)}
.ial-v030 .home-shell .quick .ico{width:36px;height:36px;border-radius:var(--r-md);background:var(--c-primary-50);color:var(--c-primary-2);display:grid;place-items:center;font-size:15px;margin-bottom:10px}
.ial-v030 .home-shell .quick h4{font-size:14px;font-weight:700;margin:0 0 4px}
.ial-v030 .home-shell .quick p{font-size:12px;color:var(--c-muted);margin:0;line-height:1.5}
.ial-v030 .home-shell .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:20px}

/* ---------- 8. Papers 列表打磨 ---------- */
.ial-v030 .paperCard{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:18px 20px;display:flex;flex-direction:column;gap:10px;
  transition:all .15s;box-shadow:0 1px 3px rgba(15,23,42,.04);
}
.ial-v030 .paperCard:hover{border-color:#cad5ea;box-shadow:0 4px 14px rgba(15,23,42,.08);transform:translateY(-1px)}
.ial-v030 .paperCard .paperTitle{font-size:18px;font-weight:800;color:var(--c-ink);margin:0;letter-spacing:-.01em}
.ial-v030 .paperCard .paperMeta{font-size:12px;color:var(--c-muted);display:flex;gap:10px;flex-wrap:wrap}
.ial-v030 .paperCard .paperMeta b{color:var(--c-ink-2);font-weight:700}
.ial-v030 .paperCard p{font-size:12px;color:var(--c-muted);line-height:1.55;margin:0}
.ial-v030 .paperCard .btn{width:100%;margin-top:auto}
.ial-v030 .paperFilters{padding:16px;border-radius:var(--r-lg)}
.ial-v030 .paperFilters .paperFilterModule,
.ial-v030 .paperFilters select{min-height:44px;font-size:13px;font-weight:600}

/* ---------- 9. Review 打磨 ---------- */
.ial-v030 .reviewSummary{background:linear-gradient(135deg,#fff5d6 0%,#ffe9b0 100%);border:1px solid #f5d97a;border-radius:var(--r-lg);padding:18px 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:14px;margin:14px 0 18px}
.ial-v030 .reviewSummary>div{text-align:center}
.ial-v030 .reviewSummary b{display:block;font-size:24px;font-weight:800;color:#5d3a00;letter-spacing:-.01em}
.ial-v030 .reviewSummary span{font-size:11px;color:#7a5a00;font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.ial-v030 .reviewTabs .v027-review-tab{padding:10px 14px;font-size:12px;font-weight:700;color:var(--c-ink-3);border-bottom:2px solid transparent;cursor:pointer;background:transparent;border-left:0;border-right:0;border-top:0}
.ial-v030 .reviewTabs .v027-review-tab.active{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.ial-v030 .reviewEmpty{background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-lg);padding:36px 20px;text-align:center;color:var(--c-muted)}
.ial-v030 .reviewRow{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:12px 14px}

/* ---------- 10. Progress 打磨 ---------- */
.ial-v030 .progressCard{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:18px 20px;box-shadow:0 1px 3px rgba(15,23,42,.04)}
.ial-v030 .progressCard h3{font-size:14px;font-weight:700;color:var(--c-ink-2);margin:0 0 14px;display:flex;align-items:center;gap:6px}
.ial-v030 .progressCard h3 small{font-size:10px;font-weight:600;color:var(--c-muted);letter-spacing:.04em;text-transform:uppercase;margin-left:auto}
.ial-v030 .progressCard .topicRow{padding:9px 0;border-bottom:1px solid var(--c-line-2)}
.ial-v030 .progressCard .topicRow:last-child{border-bottom:0}
.ial-v030 .progressCard .topicRow b{font-size:13px;font-weight:700;color:var(--c-ink-2)}
.ial-v030 .progressCard .topicRow .bar{height:6px;background:var(--c-line-2);border-radius:99px;margin:6px 0;overflow:hidden}
.ial-v030 .progressCard .topicRow .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--c-primary),#5a3df0);border-radius:99px}
.ial-v030 .progressCard .topicRow .meta{font-size:11px;color:var(--c-muted);font-weight:600;letter-spacing:.02em}

/* ---------- 11. 顶部条 (topbar) 打磨 ---------- */
.ial-v030:not(.workspace-mode) .topbar{
  background:rgba(255,255,255,.95);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:0 1px 3px rgba(15,23,42,.04);padding:12px 16px;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.ial-v030:not(.workspace-mode) .topbar .topbarLeft{display:flex;align-items:center;gap:8px;flex:0 1 auto}
.ial-v030:not(.workspace-mode) .topbar .taskBarCenter{display:flex;align-items:center;gap:6px;margin:0 auto}
.ial-v030:not(.workspace-mode) .topbar .taskBarRight{display:flex;align-items:center;gap:8px;margin-left:auto}
.ial-v030:not(.workspace-mode) .topbar b{font-size:13px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em}
.ial-v030:not(.workspace-mode) .topbar .tag{font-size:10px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:4px 8px;border-radius:var(--r-pill);background:var(--c-primary-50);color:var(--c-primary-2)}
.ial-v030:not(.workspace-mode) .topbar .btn{
  border-radius:var(--r-pill);padding:7px 14px;font-size:12px;font-weight:700;
  border:1.5px solid var(--c-line);background:#fff;color:var(--c-ink-2);
}
.ial-v030:not(.workspace-mode) .topbar .btn:hover{border-color:var(--c-primary);color:var(--c-primary)}
.ial-v030:not(.workspace-mode) .topbar .workspaceTimer{
  display:inline-flex;align-items:center;gap:5px;padding:7px 12px;
  background:var(--c-ink);color:#fff;border-radius:var(--r-pill);
  font-variant-numeric:tabular-nums;font-size:12px;font-weight:700;
}

/* ---------- 12. 通用微调 ---------- */
.ial-v030 .eyebrow{
  font-size:11px;font-weight:800;color:var(--c-muted);letter-spacing:.08em;text-transform:uppercase;
  display:inline-block;margin-bottom:8px;
}
.ial-v030 .pageHead h1{font-size:28px;font-weight:800;letter-spacing:-.02em;color:var(--c-ink);margin:0 0 6px}
.ial-v030 .pageHead p{font-size:14px;color:var(--c-muted);line-height:1.55;margin:0}
.ial-v030 .btn{
  font-weight:700;letter-spacing:-.005em;
  border-radius:var(--r-md);
}
.ial-v030 .btn.primary{
  background:var(--c-primary);color:#fff;border:1px solid var(--c-primary);
}
.ial-v030 .btn.primary:hover{background:var(--c-primary-2);border-color:var(--c-primary-2)}
.ial-v030 .btn.ghost{
  background:transparent;border:1.5px solid var(--c-line);color:var(--c-ink-2);
}
.ial-v030 .btn.ghost:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ---------- 13. 移动端响应式打磨 ---------- */
@media(max-width:760px){
  .ial-v030 .home-shell .hero{grid-template-columns:1fr;padding:24px 22px}
  .ial-v030 .home-shell .hero h2{font-size:24px}
  .ial-v030 .home-shell .metrics{grid-template-columns:repeat(2,1fr);gap:10px}
  .ial-v030 .home-shell .heroBtns .btn{flex:1;min-width:0}
  .ial-v030 .paperCard{padding:14px 16px}
  .ial-v030 .summaryModules{overflow-x:auto;flex-wrap:nowrap;padding:0 0 4px}
  .ial-v030 .summaryModules button{white-space:nowrap;flex:none}
  .ial-v030 .summaryCards,
  .ial-v030 .summaryChapterList{grid-template-columns:1fr!important}
  .summaryBackBtn{font-size:11px;padding:7px 12px}
  .reviewTabs{overflow-x:auto;flex-wrap:nowrap}
}

/* ---------- 14. 高特异性覆盖：v029 用了 #workspace，s0,2,2 → 必须用 id 提升特异性 ---------- */
body.ial-v030.workspace-mode.ial-v029 #workspace .questionPaper,
body.ial-v030.workspace-mode.ial-v029 #workspace .workingPanel{
  background:transparent!important;
  border:none!important;
  box-shadow:none!important;
  height:auto!important;
  min-height:0!important;
  flex:0 1 auto!important;
}
body.ial-v030.workspace-mode.ial-v029 #workspace .questionPaperInner{
  background:var(--c-paper)!important;
  border:1px solid var(--c-line)!important;
  border-radius:var(--r-lg)!important;
  padding:18px 22px 22px!important;
  box-shadow:0 1px 2px rgba(15,23,42,.04)!important;
}

/* ---------- 15. 覆盖 index.html 行 1450 的大灰板根源 ---------- */
body.ial-v030.workspace-mode.ial-v029 #workspace .pdfRegionHost,
body.ial-v030.workspace-mode.ial-v029 #workspace .questionPaperInner .pdfRegionHost{
  background:transparent!important;
  padding:0!important;
  min-height:0!important;
  border-radius:var(--r-md);
}
/* 移动 MarkScheme 区域的灰色也一并消掉 */
body.ial-v030.workspace-mode.ial-v029 #workspace .v027MsContent{background:transparent!important;border:none!important}
body.ial-v030.workspace-mode.ial-v029 #workspace .v027MsHead{background:transparent!important;border:none!important;padding:6px 0}

/* ---------- 16. sidebar 改 fixed 后：.main 让位 252px（仅桌面），移动断点取消 ---------- */
.ial-v030:not(.workspace-mode) .main{padding-left:252px}
.ial-v030.workspace-mode .main{padding-left:252px}
@media(max-width:980px){
  .ial-v030:not(.workspace-mode) .main{padding-left:0!important}
  .ial-v030.workspace-mode .main{padding-left:0!important}
}
/* ---------- 17. sidebar 底部：登录 + 设置（左下角，软件常规位） ---------- */
.ial-v030 .sidebarAccountMirror .sidebarSignIn,
.ial-v030 .sidebarAccountMirror .sidebarSettingsBtn{
  border:0;background:transparent;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
}
.ial-v030 .sidebarAccountMirror .sidebarSignIn{
  background:var(--c-primary);color:#fff;font-size:11px;font-weight:700;
  padding:7px 12px;border-radius:var(--r-pill);margin-left:auto;flex:none;
}
.ial-v030 .sidebarAccountMirror .sidebarSignIn:hover{background:var(--c-primary-2)}
.ial-v030 .sidebarAccountMirror .sidebarSettingsBtn{
  width:32px;height:32px;border-radius:50%;font-size:15px;flex:none;margin-left:2px;
  color:rgba(255,255,255,.55);transition:background .15s,color .15s;
}
.ial-v030 .sidebarAccountMirror .sidebarSettingsBtn:hover{background:rgba(255,255,255,.1);color:#fff}

/* ---------- 18. 高特异性覆盖 v030 的 sidebar sticky !important ---------- */
body.ial-v030 .app .sidebar{
  position:fixed!important;left:0!important;top:0!important;bottom:0!important;width:252px!important;
  height:auto!important;min-height:100vh!important;
  display:flex!important;flex-direction:column!important;align-self:stretch!important;
  background:linear-gradient(180deg,#0c2340 0%,#08182b 100%)!important;
  box-shadow:1px 0 0 rgba(255,255,255,.04)!important;
  z-index:20!important;
}
/* sidebar-collapsed 时也要 fixed */
body.ial-v030 .app.sidebar-collapsed .sidebar{
  position:fixed!important;left:0!important;top:0!important;bottom:0!important;width:64px!important;
  z-index:20!important;
}

/* ---------- 19. 移动端强制隐藏 sidebar（不与 desktop fixed 冲突）---------- */
@media(max-width:980px){
  body.ial-v030 .app .sidebar,
  body.ial-v030 .app.sidebar-collapsed .sidebar{
    display:none!important;
  }
}

/* ---------- 20. 移动端 Papers 列表：隐藏 Workspace mode 选择（死代码+误导），让 Start Paper 直入 --- */
@media(max-width:980px){
  body.ial-v027 .v027StartPaperCard .v027ChoiceGroup:nth-of-type(2),
  body.ial-v027 .v027StartPaperCard .workspaceModeHelp{display:none!important}
  /* 移动端 paper workspace 强制单题全宽 + 隐藏答案栏 + 显示原卷画笔 */
  body.paper-fullscreen-mode .paperAnswerBook,
  body.paper-fullscreen-mode .segmentedAnswerBook{display:none!important}
  body.paper-fullscreen-mode .paperQuestionViewer{grid-column:1/-1!important;width:100%!important;max-width:none!important;border-right:0!important;height:auto!important}
  body.paper-fullscreen-mode .paperSplitHandle{display:none!important}
  /* v030 的 .paper-split-workspace 会隐藏原卷画笔 —— 移动端强制显示以便手指在原卷书写 */
  body.paper-fullscreen-mode.paper-split-workspace .paperSourceInkToolbar,
  body.paper-fullscreen-mode.paper-original-workspace .paperSourceInkToolbar,
  body.paper-fullscreen-mode .paperSourceInkToolbar{display:flex!important}
  body.paper-fullscreen-mode .continuousPaperViewport{background:transparent!important;height:auto!important;padding:6px!important}
}

/* ---------- 21. Summary：隐藏旧 v027 Knowledge Map demo（假 Start topic practice 按钮） ---------- */
#learn>.pageHead,
#learn>.learnLayout{display:none!important}

/* ---------- 22. Summary 章节详情的有效 Start topic practice ---------- */
.summaryShell .summaryDetailTools{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px;
}
.summaryShell .summaryDetailTools .summaryBackBtn{margin:0}
.summaryShell .summaryDetailTools .summaryPracticeBtn{
  margin-left:auto;display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary);color:#fff;border:0;padding:9px 16px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:700;cursor:pointer;
  box-shadow:0 2px 8px rgba(49,94,251,.25);transition:background .15s;
}
.summaryShell .summaryDetailTools .summaryPracticeBtn:hover{background:var(--c-primary-2)}
.summaryShell .summaryDetailTools .summaryPracticeBtn svg{width:14px;height:14px}
@media(max-width:600px){
  .summaryShell .summaryDetailTools{width:100%}
  .summaryShell .summaryDetailTools .summaryPracticeBtn{margin-left:0;width:100%;justify-content:center}
}

/* ---------- 23. Settings 面板（左下角 ⚙ 打开）---------- */
.settingsGroup{margin-top:14px;border-top:1px solid var(--c-line-2);padding-top:12px;display:grid;gap:8px}
.settingsGroup b{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--c-muted)}
.settingsGroup .btn{width:100%;justify-content:center}
.btn.dangerLink{background:#fdeaea;color:#b23f47;border:1px solid #f3c4c4}
.btn.dangerLink:hover{background:#f7d2d2}

/* ---------- 24. workspace 小工具按钮（旋转 + 手写板开关）---------- */
.workspaceToolBtn{
  min-height:34px;min-width:34px;display:inline-flex;align-items:center;gap:5px;
  border:1.5px solid var(--c-line);background:#fff;color:var(--c-ink-2);
  border-radius:10px;padding:6px 10px;font-size:12px;font-weight:700;cursor:pointer;
}
.workspaceToolBtn:hover{border-color:var(--c-primary);color:var(--c-primary)}
[data-rotate-toggle]{display:none}
@media(max-width:980px){[data-rotate-toggle]{display:inline-flex}}
/* 手写板隐藏态：只读题 + 答案 */
body.ink-hidden #workspace .workHead,
body.ink-hidden #workspace .inkToolbar,
body.ink-hidden #workspace .inkWorkspace,
body.ink-hidden #workspace .canvasStage,
body.ink-hidden #workspace .workspaceSubmit,
body.ink-hidden #workspace .inkInfo{display:none!important}
body.ink-hidden #workspace .workingPanel{min-height:0!important}

/* ---------- 25. 排版节奏修复：移动端不再贴边 + 桌面呼吸感 ---------- */
/* 手机（≤600px）：main 左右 14px，页头卡片完整呼吸 */
@media(max-width:600px){
  body.ial-v030 .main{padding:116px 14px 34px!important}
  body.ial-v030 .pageHead,
  body.ial-v030 .practiceHeader{
    padding:15px 16px!important;margin-bottom:14px;border-radius:var(--r-lg)!important;
  }
  body.ial-v030 .practiceHeader .eyebrow,
  body.ial-v030 .pageHead .eyebrow{letter-spacing:.08em}
  body.ial-v030 .practiceFilterBar{margin-bottom:14px}
  body.ial-v030 .qcard{margin-bottom:12px}
  /* 无横屏版本：papers 页的全屏切换在手机上隐藏 */
  body.ial-v027 [onclick*="toggleBrowserFullscreen"]{display:none!important}
}
/* 平板/窄桌面（601–980px）：左右 22px */
@media(min-width:601px) and (max-width:980px){
  body.ial-v030 .main{padding:116px 22px 34px!important}
  body.ial-v030 .pageHead,
  body.ial-v030 .practiceHeader{padding:16px 20px!important;margin-bottom:14px;border-radius:var(--r-lg)!important}
}
/* 桌面（>980px）：加大左右留白 + 页头卡片统一 */
@media(min-width:981px){
  body.ial-v030 .main{padding:26px 44px 70px}
  body.ial-v030 .pageHead,
  body.ial-v030 .practiceHeader{padding:20px 26px!important;margin-bottom:18px;border-radius:var(--r-lg)!important}
  body.ial-v030 .practiceFilterBar{margin-bottom:18px}
}

/* ---------- 26. 移动端筛选区：标签在上、控件全宽、计数独占一行 ---------- */
@media(max-width:600px){
  body.ial-v030 .filterField{display:flex!important;flex-direction:column!important;align-items:stretch!important;gap:6px}
  body.ial-v030 .filterField label{font-size:11px;font-weight:700;color:var(--c-muted);letter-spacing:.05em;text-transform:uppercase}
  body.ial-v030 .filterField select{width:100%!important;min-height:46px}
  body.ial-v030 .practiceFilterMeta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
  body.ial-v030 .practiceFilterMeta .countText{display:block!important;width:100%!important;margin:0 0 2px}
  body.ial-v030 .practiceFilterMeta .spacer{display:none!important}
  body.ial-v030 .practiceSearchRow{display:flex!important;flex-direction:column!important;gap:10px}
  body.ial-v030 .practiceSearchActions{display:flex!important;gap:10px}
  body.ial-v030 .practiceSearchActions .btn{flex:1;min-height:44px}
}

/* ---------- 27. 移动端搜索行：全宽、label 左对齐 ---------- */
@media(max-width:600px){
  body.ial-v030 .practiceSearchWrap{width:100%!important}
  body.ial-v030 .practiceSearchWrap label{display:block;text-align:left;font-size:11px;font-weight:700;color:var(--c-muted);letter-spacing:.05em;text-transform:uppercase;margin-bottom:6px}
}

/* ---------- 28. 微调：Clear 自适应 + Paper 顶栏换行 ---------- */
@media(max-width:600px){
  body.ial-v030 .practiceSearchActions .btn{flex:0 0 auto;min-width:130px}
}
body.paper-fullscreen-mode .paperWorkspaceActions.adaptivePaperActions{flex-wrap:wrap;row-gap:6px}
body.paper-fullscreen-mode .paperWorkspaceActions .v027PaperViewTabs{order:-1}

/* ---------- 29. 左右对称留白（v033 #17 的 padding-left 特异性更高，必须同层覆盖）---------- */
@media(max-width:600px){
  body.ial-v030:not(.workspace-mode) .main{padding-left:14px!important;padding-right:14px!important}
  body.ial-v030.workspace-mode .main{padding-left:14px!important;padding-right:14px!important}
}
@media(min-width:601px) and (max-width:980px){
  body.ial-v030:not(.workspace-mode) .main{padding-left:22px!important;padding-right:22px!important}
  body.ial-v030.workspace-mode .main{padding-left:22px!important;padding-right:22px!important}
}
@media(min-width:981px){
  /* 252px 是 sidebar 让位，再补 44px 内容留白 */
  body.ial-v030:not(.workspace-mode) .main{padding-left:296px!important;padding-right:44px!important}
  body.ial-v030.workspace-mode .main{padding-left:252px!important;padding-right:20px!important}
}

/* ---------- 30. 桌面筛选计数行间距 ---------- */
@media(min-width:601px){
  body.ial-v030 .practiceFilterMeta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
  body.ial-v030 .practiceFilterMeta .countText{font-weight:800}
}

/* ================= 31. 账户 / 登录 / 订阅（v034 账户体系） ================= */
/* --- 左下角账户卡 --- */
body.ial-v030 .sidebarAccountMirror{
  align-items:center;gap:10px;padding:12px 12px 14px;
  border-top:1px solid rgba(255,255,255,.10);
}
body.ial-v030 .sidebarAccountMirror .acctAvatar{
  display:grid;place-items:center;width:34px;height:34px;flex:none;border-radius:50%;
  background:linear-gradient(135deg,#5b8cff,#7b5bff);color:#fff;font-size:12px;font-weight:800;letter-spacing:.02em;
}
body.ial-v030 .sidebarAccountMirror .acctAvatar.guest{background:rgba(255,255,255,.10);color:rgba(255,255,255,.75)}
body.ial-v030 .sidebarAccountMirror .acctCopy{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}
body.ial-v030 .sidebarAccountMirror .acctCopy b{color:#fff;font-size:13px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
body.ial-v030 .sidebarAccountMirror .acctCopy small{color:rgba(255,255,255,.55);font-size:10.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
body.ial-v030 .sidebarAccountMirror .acctPlan{
  align-self:flex-start;margin-top:5px;padding:2px 8px;border-radius:999px;font-size:9.5px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;
}
body.ial-v030 .sidebarAccountMirror .acctPlan.trial{background:rgba(255,193,7,.16);color:#ffcf5c}
body.ial-v030 .sidebarAccountMirror .acctPlan.pro{background:rgba(46,204,113,.18);color:#5ce6a3}
body.ial-v030 .sidebarAccountMirror .acctPlan.expired{background:rgba(255,107,107,.18);color:#ff9b9b}
body.ial-v030 .sidebarAccountMirror .acctActions{display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex:none}
body.ial-v030 .sidebarAccountMirror .acctBtn{
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:#fff;
  border-radius:8px;padding:5px 10px;font-size:11px;font-weight:700;cursor:pointer;white-space:nowrap;
}
body.ial-v030 .sidebarAccountMirror .acctBtn:hover{background:rgba(255,255,255,.16)}
body.ial-v030 .sidebarAccountMirror .acctBtn.primary{background:#315efb;border-color:#315efb}
body.ial-v030 .sidebarAccountMirror .acctBtn.primary:hover{background:#274ddb}
body.ial-v030 .sidebarAccountMirror .acctIcon{
  display:grid;place-items:center;width:26px;height:26px;border-radius:8px;
  background:transparent;border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.6);cursor:pointer;
}
body.ial-v030 .sidebarAccountMirror .acctIcon:hover{color:#fff;border-color:rgba(255,255,255,.4)}
body.ial-v030 .app.sidebar-collapsed .sidebarAccountMirror .acctCopy,
body.ial-v030 .app.sidebar-collapsed .sidebarAccountMirror .acctBtn{display:none}

/* --- 登录 / 订阅对话框 --- */
.loginBackdrop{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:18px;
  background:rgba(9,17,31,.62);backdrop-filter:blur(3px)}
.loginBackdrop.show{display:flex}
.acctCard{position:relative;width:100%;max-width:420px;background:#fff;border-radius:18px;padding:26px 24px 22px;
  box-shadow:0 24px 60px rgba(9,17,31,.28);text-align:center;max-height:92vh;overflow:auto}
.acctCard.wide{max-width:560px;text-align:left}
.acctCard .acctClose{position:absolute;top:10px;right:12px;border:0;background:transparent;font-size:22px;line-height:1;color:#94a3b8;cursor:pointer}
.acctCard .acctClose:hover{color:#0f172a}
.acctBrand{width:42px;height:42px;margin:0 auto 12px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#315efb,#6d4aff);color:#fff;font-weight:900;font-size:19px}
.acctCard.wide .acctBrand{margin-left:0}
.acctCard h2{margin:0 0 6px;font-size:19px;font-weight:800;color:#0f172a;letter-spacing:-.01em}
.acctCard .acctSub{margin:0 0 16px;font-size:12.5px;color:#64748b;line-height:1.55}
.acctTabs{display:flex;gap:4px;background:#f1f5f9;border-radius:10px;padding:4px;margin-bottom:16px}
.acctTabs button{flex:1;border:0;background:transparent;border-radius:7px;padding:8px;font-size:12.5px;font-weight:700;color:#64748b;cursor:pointer}
.acctTabs button.active{background:#fff;color:#315efb;box-shadow:0 1px 3px rgba(15,23,42,.10)}
.acctForm{display:grid;gap:11px;text-align:left}
.acctForm label{display:grid;gap:5px;font-size:11px;font-weight:700;color:#475569;letter-spacing:.04em;text-transform:uppercase}
.acctForm input{padding:11px 12px;border:1.5px solid #dde3ec;border-radius:10px;font-size:14px;color:#0f172a;background:#fff;min-height:44px}
.acctForm input:focus{outline:0;border-color:#315efb;box-shadow:0 0 0 3px rgba(49,94,251,.12)}
.acctForm.row{grid-template-columns:1fr auto;align-items:end}
.acctForm.row input{min-width:0;text-transform:uppercase}
.acctSubmit{width:100%;min-height:44px;border:0;border-radius:10px;background:#315efb;color:#fff;font-size:14px;font-weight:800;cursor:pointer}
.acctSubmit:hover{background:#274ddb}
.acctError{background:#fdecec;color:#b42318;border:1px solid #f6cfcf;border-radius:9px;padding:9px 11px;font-size:12.5px;text-align:left}
.acctMsg{margin-top:12px;border-radius:9px;padding:10px 12px;font-size:12.5px}
.acctMsg.ok{background:#e8f8f0;color:#0b7a52;border:1px solid #bdecd5}
.acctMsg.err{background:#fdecec;color:#b42318;border:1px solid #f6cfcf}
.acctFoot{margin:14px 0 0;font-size:11px;color:#94a3b8;line-height:1.5}

/* --- 价格卡 --- */
.planGrid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px}
.planCard{position:relative;display:flex;flex-direction:column;gap:4px;padding:16px 14px;border-radius:14px;text-align:left;
  border:1.5px solid #e2e8f0;background:#fff;cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .15s}
.planCard:hover{border-color:#315efb;box-shadow:0 6px 18px rgba(49,94,251,.14);transform:translateY(-1px)}
.planCard.best{border-color:#315efb;background:linear-gradient(180deg,#f5f8ff,#fff)}
.planFlag{position:absolute;top:-9px;right:10px;background:#315efb;color:#fff;font-size:9.5px;font-weight:800;
  padding:3px 8px;border-radius:999px;letter-spacing:.04em;text-transform:uppercase}
.planName{font-size:12px;font-weight:800;color:#475569;text-transform:uppercase;letter-spacing:.06em}
.planPrice{font-size:26px;font-weight:900;color:#0f172a;letter-spacing:-.02em}
.planPrice small{font-size:12px;font-weight:700;color:#94a3b8;margin-left:3px}
.planNote{font-size:11px;color:#64748b;line-height:1.4}

/* --- 支付二维码区 --- */
.payBlock{display:flex;gap:16px;align-items:center;padding:14px;border:1px dashed #cbd5e1;border-radius:14px;background:#fafbfe;margin-bottom:16px}
.payQr{position:relative;width:120px;height:120px;flex:none;border-radius:10px;background:#fff;border:1px solid #e2e8f0;display:grid;place-items:center;overflow:hidden}
.payQr img{width:100%;height:100%;object-fit:contain}
.payQr .payQrEmpty{display:none;font-size:11px;color:#94a3b8;text-align:center;line-height:1.4}
.payQr.empty .payQrEmpty{display:block}
.payCopy{display:grid;gap:3px;font-size:12px;color:#64748b;line-height:1.5}
.payCopy b{font-size:12px;color:#0f172a}
.payCopy b:not(:first-child){margin-top:8px}

/* --- 付费墙 --- */
.paywallOverlay{position:fixed;inset:0;z-index:130;display:none;align-items:center;justify-content:center;padding:20px;
  background:rgba(9,17,31,.72);backdrop-filter:blur(5px)}
.paywallOverlay.show{display:flex}
.paywallCard{max-width:420px;width:100%;background:#fff;border-radius:18px;padding:28px 24px;text-align:center;box-shadow:0 24px 60px rgba(9,17,31,.3)}
.paywallCard h2{margin:0 0 8px;font-size:20px;font-weight:800;color:#0f172a}
.paywallCard p{margin:0 0 18px;font-size:13px;color:#64748b;line-height:1.6}
.paywallActions{display:grid;gap:9px;margin-bottom:12px}
.paywallActions .btn{min-height:44px;border-radius:10px;font-size:13.5px;font-weight:800}
.paywallActions .btn.primary{background:#315efb;border-color:#315efb;color:#fff}
.paywallCard small{font-size:11px;color:#94a3b8;line-height:1.5;display:block}

@media(max-width:600px){
  .planGrid{grid-template-columns:1fr}
  .payBlock{flex-direction:column;text-align:center}
  .acctCard{padding:22px 18px 18px;border-radius:16px}
  .acctForm.row{grid-template-columns:1fr}
}

/* 31b. 设置面板账户组 + 账户卡紧凑化 */
.settingsGroup .acctSignedAs{font-size:11.5px;color:var(--c-muted);line-height:1.5}
.settingsGroup .btn em{font-style:normal;color:var(--c-muted);font-size:10.5px;margin-left:6px;font-weight:700}
body.ial-v030 .sidebarAccountMirror .acctActions{display:none}
body.ial-v030 .sidebarAccountMirror .acctCopy small{font-size:10px}
body.ial-v030 .sidebarAccountMirror .acctPlan{white-space:nowrap;font-size:9px;letter-spacing:.03em;max-width:100%;overflow:hidden;text-overflow:ellipsis}

/* ---------- 32. 移动端：滑动 / 手写 严格分离（两个大按钮置顶） ---------- */
@media(max-width:980px){
  body.ial-v030 .inkToolbar,
  body.ial-v030 .paperSourceInkToolbar,
  body.ial-v030 .onPaperToolbar{
    flex-wrap:wrap;gap:6px;
  }
  /* Move (Hand) 与 Write (Pen) 置顶，各占一半，点击区 ≥46px */
  body.ial-v030 #handTool, body.ial-v030 #penTool,
  body.ial-v030 #paperHandBtn, body.ial-v030 #paperPenBtn,
  body.ial-v030 .onPaperToolbar .btn{
    flex:1 1 45%;min-height:46px;font-size:13px;justify-content:center;align-items:center;
  }
  body.ial-v030 #handTool{order:-2}
  body.ial-v030 #penTool{order:-1}
  body.ial-v030 #paperHandBtn{order:-2}
  body.ial-v030 #paperPenBtn{order:-1}
  /* 选中态一眼可辨：Move=中性灰，Write=蓝色 */
  body.ial-v030 #handTool.active,
  body.ial-v030 #paperHandBtn.active{
    background:#eef1f6;border-color:#c3ccda;color:#334155;box-shadow:inset 0 0 0 1px #dbe2ec;
  }
  body.ial-v030 #penTool.active,
  body.ial-v030 #paperPenBtn.active{
    background:#315efb;border-color:#315efb;color:#fff;
  }
  /* 其余工具（橡皮/高亮/尺寸/撤销）排在下面一行 */
  body.ial-v030 #eraserTool, body.ial-v030 #highlighterTool,
  body.ial-v030 #paperEraserBtn, body.ial-v030 #paperHighlighterBtn, body.ial-v030 #paperLassoBtn{order:0}
}

/* ---------- 33. 移动端工具组：两列网格 + Move/Write 置顶（修正容器选择器） ---------- */
@media(max-width:980px){
  body.ial-v030 .inkToolbar .toolGroup,
  body.ial-v030 .paperInkToolbar .inkPrimaryTools,
  body.ial-v030 .sourceInkToolbar .inkPrimaryTools{
    display:grid!important;grid-template-columns:repeat(2,1fr)!important;gap:6px!important;width:100%;
  }
  body.ial-v030 .inkToolbar .toolGroup .inkTool,
  body.ial-v030 .paperInkToolbar .inkPrimaryTools .paperInkToolBtn,
  body.ial-v030 .sourceInkToolbar .inkPrimaryTools .paperInkToolBtn{
    min-height:46px!important;width:100%;justify-content:center!important;
  }
  /* Move 第一格，Write 第二格 */
  body.ial-v030 #handTool,
  body.ial-v030 #paperHandBtn,
  body.ial-v030 .sourceInkToolbar [data-source-tool="hand"]{order:-2}
  body.ial-v030 #penTool,
  body.ial-v030 #paperPenBtn,
  body.ial-v030 .sourceInkToolbar [data-source-tool="pen"]{order:-1}
  /* 选中态：Move=中性灰，Write=品牌蓝 */
  body.ial-v030 #handTool.active,
  body.ial-v030 #paperHandBtn.active,
  body.ial-v030 .sourceInkToolbar [data-source-tool="hand"].active{
    background:#eef1f6!important;border-color:#c3ccda!important;color:#334155!important;box-shadow:inset 0 0 0 1px #dbe2ec;
  }
  body.ial-v030 #penTool.active,
  body.ial-v030 #paperPenBtn.active,
  body.ial-v030 .sourceInkToolbar [data-source-tool="pen"].active{
    background:#315efb!important;border-color:#315efb!important;color:#fff!important;
  }
}

/* ---------- 34. 移动端工具按钮：恢复文字标签 + 居中（覆盖 v033#5 与 inline 的 span 隐藏） ---------- */
@media(max-width:980px){
  body.ial-v030.workspace-mode #workspace .inkToolbar .inkTool,
  body.ial-v030.workspace-mode #workspace .inkToolbar .inkTool span,
  body.ial-v030 .paperInkToolbar .paperInkToolBtn,
  body.ial-v030 .paperInkToolbar .paperInkToolBtn span,
  body.ial-v030 .sourceInkToolbar .paperInkToolBtn,
  body.ial-v030 .sourceInkToolbar .paperInkToolBtn span{
    display:inline-flex!important;align-items:center!important;justify-content:center!important;
  }
  body.ial-v030.workspace-mode #workspace .inkToolbar .inkTool span,
  body.ial-v030 .paperInkToolbar .paperInkToolBtn span,
  body.ial-v030 .sourceInkToolbar .paperInkToolBtn span{
    margin-left:6px!important;font-size:12.5px!important;font-weight:700;line-height:1;
  }
}
@media(max-width:980px){
  body.ial-v030 .inkToolbar .clearPageBtn,
  body.ial-v030 .inkToolbar [onclick*="clearInk"],
  body.ial-v030 .toolClear{white-space:nowrap;min-width:86px}
}
@media(max-width:980px){
  body.ial-v030 .inkToolbar .clearPageBtn,
  body.ial-v030 .inkToolbar [onclick*="clearInk"],
  body.ial-v030 .toolClear{white-space:nowrap;min-width:86px}
}