/* =========================================================
   单词小岛 · 管理后台样式
   设计系统：Indigo（对齐企业级后台新皮肤规格）
   ========================================================= */
:root{
  --brand:#4F46E5;
  --brand-hover:#4338CA;
  --brand-light:rgba(79,70,229,.06);
  --success:#059669;
  --success-light:rgba(5,150,105,.08);
  --warning:#D97706;
  --warning-light:rgba(217,119,6,.08);
  --danger:#DC2626;
  --danger-light:rgba(220,38,38,.06);
  --info:#2563EB;
  --info-light:rgba(37,99,235,.08);

  --bg:#F1F5F9;
  --surface:#FFFFFF;
  --border:#E2E8F0;
  --line:#EEF0F6;

  --text:#0F172A;
  --text-secondary:#475569;
  --text-muted:#8A90A8;

  --radius-sm:6px;
  --radius:7px;
  --radius-lg:10px;

  --shadow-card:0 1px 3px rgba(0,0,0,.06);
  --shadow-lg:0 20px 50px rgba(15,23,42,.3);

  --transition:.15s ease;
  --sidebar-w:210px;
  --topbar-h:62px;
}

*{box-sizing:border-box}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,sans-serif;
  font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
code{
  font-family:"SF Mono","Fira Code",Consolas,monospace;font-size:12px;
  background:var(--bg);padding:2px 6px;border-radius:4px;color:var(--text-secondary);
}

/* ============ 后台布局 ============ */
.admin-body{min-height:100vh}
.admin-layout{display:flex;min-height:100vh}

.sidebar{
  width:var(--sidebar-w);flex:none;background:var(--surface);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  position:fixed;top:0;left:0;bottom:0;z-index:100;
}
.sidebar-header{
  height:var(--topbar-h);padding:0 18px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.sidebar-logo{
  width:32px;height:32px;flex:none;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),#6366F1);
  color:#fff;font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.sidebar-title{font-size:15px;font-weight:600;color:#1f2437;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.sidebar-nav{flex:1;padding:12px;overflow-y:auto;scrollbar-width:none;-ms-overflow-style:none}
.sidebar-nav::-webkit-scrollbar{width:0;height:0}

.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:var(--radius-sm);
  color:var(--text-secondary);font-size:13.5px;
  text-decoration:none;margin-bottom:2px;transition:all var(--transition);
}
.nav-item:hover{background:#F1F5F9;color:var(--text)}
.nav-item.active{background:var(--brand-light);color:var(--brand)}
.nav-item.active::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;background:var(--brand);border-radius:0 3px 3px 0;
}
.nav-icon{
  width:18px;height:18px;flex:none;display:flex;align-items:center;justify-content:center;color:inherit;
}
.nav-icon svg{width:100%;height:100%;display:block}
.nav-group-label{
  padding:14px 12px 5px;font-size:10.5px;font-weight:700;
  letter-spacing:1.5px;color:#94A3B8;user-select:none;
}
.sidebar-nav > .nav-group-label:first-child{padding-top:2px}

.main-wrap{margin-left:var(--sidebar-w);flex:1;min-width:0;display:flex;flex-direction:column}
.page-header{
  height:var(--topbar-h);padding:0 24px;background:var(--surface);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  position:sticky;top:0;z-index:50;
}
.breadcrumb{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--text-muted)}
.breadcrumb .sep{color:#CBD5E1}
.breadcrumb .cur{color:#1f2437;font-weight:600}
.header-user{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-secondary)}
.header-user .name{display:inline-flex;align-items:center;gap:8px}
.header-user .avatar{
  width:30px;height:30px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),#6366F1);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;
}
.header-user a.logout{color:var(--text-secondary);font-size:13px}
.header-user a.logout:hover{color:var(--danger)}

.content{padding:18px 22px;flex:1}

/* ============ 单卡片骨架 ============ */
.page-card{
  background:var(--surface);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);margin-bottom:16px;overflow:hidden;
}
.page-head{
  display:flex;align-items:center;justify-content:space-between;gap:14px 20px;
  flex-wrap:wrap;padding:13px 18px;border-bottom:1px solid var(--line);
}
.col-actions{white-space:nowrap}
.col-actions .inline-form{display:inline-block;margin-left:6px}
.link-btn{border:0;background:none;color:var(--brand);font-size:13px;cursor:pointer;
  padding:0;font-family:inherit;margin-right:10px}
.link-btn:hover{text-decoration:underline}
/* 表格内逐词朗读按钮 */
.icon-play{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;
  margin-left:6px;padding:0;border:1.5px solid var(--border);border-radius:8px;background:#fff;
  color:var(--brand);font-size:12px;line-height:1;cursor:pointer;vertical-align:middle;
  transition:all var(--transition)}
.icon-play:hover{border-color:var(--brand);background:var(--brand-light)}
.icon-play:active{transform:scale(.94)}
.seg-info{font-size:13px;color:#5B6484;margin-bottom:12px}
.modal-box.wide{max-width:980px;width:94vw}
/* 错题列表弹窗：比 wide 再宽 20% */
.modal-box.wide-xl{max-width:1176px;width:96vw}
.modal-box .modal-body.nopad{padding:0;flex:1;min-height:0;overflow:hidden}
.modal-box .modal-body iframe{display:block;width:100%;height:100%;min-height:520px;border:0;background:#EEF2FF}
/* 学生端作答预览弹窗：宽度贴合内容，高度由 iframe 内容自适应上报 */
.modal-box.student{max-width:680px;width:94vw}
.modal-box.student .modal-body.nopad{overflow:auto}
.modal-box.student .modal-body iframe{height:420px;min-height:0}
.modal-progress{margin-left:auto;margin-right:12px;font-size:12px;color:var(--text-muted);font-weight:400}
.modal-foot{display:flex;gap:10px;padding:12px 18px;border-top:1px solid var(--line);background:#FAFBFF}
.modal-foot .btn{height:36px;padding:0 18px;font-size:13px;flex:none}
.page-head-l{flex:1 1 260px;min-width:0}
.page-title-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.head-stats{display:inline-flex;gap:8px;flex-wrap:wrap}
.head-stat{font-size:12px;font-weight:400;color:var(--text-muted);background:#F1F5F9;
  border-radius:100px;padding:2px 10px}
.page-head-l h2{margin:0;font-size:17px;font-weight:600;color:#1f2437;letter-spacing:-.2px}
.page-head-l p{margin:5px 0 0;font-size:12px;font-weight:400;color:var(--text-muted)}
.page-head-r{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.page-sec{padding:14px 18px}
.page-sec + .page-sec{border-top:1px solid var(--line)}

/* 旧类兼容（作为区块/卡片别名） */
.panel{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);margin-bottom:16px;padding:16px 18px}
.panel > h3{margin:0 0 12px;font-size:14px;font-weight:600;color:#1f2437}

/* ============ 统计格 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin-bottom:10px}
.stat-card{background:#F7F8FC;border-radius:8px;padding:12px 14px}
.stat-value{font-size:18px;font-weight:600;color:#1f2437;line-height:1.3}
.stat-label{font-size:12px;color:var(--text-muted);margin-bottom:5px}

/* ============ 表格 ============ */
.table-wrap{overflow-x:auto;border-radius:8px}
.data-table,.tbl{width:100%;border-collapse:collapse;font-size:13px}
.data-table th,.data-table td,
.tbl th,.tbl td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;vertical-align:middle}
.data-table th,.tbl th{background:#FAFBFE;color:#5B6484;font-weight:500;font-size:12.5px}
.data-table tbody tr:hover,.tbl tbody tr:hover{background:#FAFBFF}
.data-table tbody tr:last-child td,.tbl tbody tr:last-child td{border-bottom:none}
.data-table .empty,.empty{padding:46px 16px;text-align:center;color:#A2A8BD;font-size:13px;white-space:normal}

/* ============ 徽章 / 标签 ============ */
.tag,.badge{display:inline-flex;align-items:center;padding:2px 9px;border-radius:20px;font-size:12px;line-height:1.7}
.tag{background:#F0F1F5;color:var(--text-muted)}
.tag.ok,.badge-success{background:#EAF7EE;color:#1E7A3C}
.tag.bad,.badge-danger{background:#FDECEC;color:#B3261E}
.tag.info{background:#EEF2FD;color:#2B3D7A}
.tag-sub{margin-left:6px;font-size:12px;color:var(--text-muted)}
.badge-warning{background:#FFF8E6;color:#8A6100}
.badge-info{background:#EEF2FD;color:#2B3D7A}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;height:34px;
  padding:0 16px;border:1px solid transparent;border-radius:var(--radius);font-size:13px;
  line-height:1;white-space:nowrap;text-decoration:none;cursor:pointer;font-family:inherit;
  background:linear-gradient(135deg,var(--brand),#6366F1);color:#fff;
  transition:background var(--transition);
}
.btn:hover{background:linear-gradient(135deg,var(--brand-hover),var(--brand))}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:#F4F6FA}
.btn-sm{height:28px;padding:0 10px;font-size:12px;border-radius:6px}
.btn-block{width:100%;height:42px;font-size:14px}

/* ============ 表单 ============ */
.form-card{max-width:none}
.form-body{padding:22px 26px 26px}
.form-body > form{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px 20px}
.form-body > form > input[type="hidden"]{display:none}
.form-row{display:flex;flex-direction:column;gap:7px;min-width:0;grid-column:span 4}
.form-row.col-1{grid-column:span 1}
.form-row.col-2{grid-column:span 2}
.form-row.col-3{grid-column:span 3}
.form-row.col-4{grid-column:span 4}
.form-label{font-size:13px;color:#4A5170;font-weight:500;line-height:1.6}
.form-label .req{color:var(--danger);margin-left:3px}
.form-control{width:100%;min-width:0}
.form-control input,.form-control textarea,.form-control select{
  width:100%;min-height:38px;padding:7px 12px;font-size:13px;color:#1f2437;font-family:inherit;
  border:1px solid #DFE3EF;border-radius:8px;background:#FBFcFF;outline:none;
  transition:border-color var(--transition),background var(--transition),box-shadow var(--transition);
}
.form-control textarea{min-height:74px;resize:vertical}
.form-control input:focus,.form-control textarea:focus,.form-control select:focus{
  border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(79,70,229,.09);
}
.checkbox-inline{display:inline-flex;align-items:center;gap:6px;font-size:13px;padding-top:8px}
.hint{font-size:12px;color:#A2A8BD;margin-top:6px;line-height:1.8}
.upload-preview{margin-bottom:8px}
.upload-preview img{max-width:120px;max-height:120px;border-radius:8px;border:1px solid var(--border);display:block}
.form-control input[type="file"]{padding:6px 10px;background:#fff;cursor:pointer}
.form-actions{grid-column:1/-1;display:flex;align-items:center;gap:10px;margin-top:4px;
  padding-top:20px;border-top:1px solid var(--line)}
@media (max-width:1100px){
  .form-body > form{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-row.col-3,.form-row.col-4{grid-column:span 2}
  .scope-wrap{grid-template-columns:1fr}
}

/* ============ 筛选栏 / 工具栏 ============ */
.filter-bar{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
.filter-bar .finput,.filter-bar .fselect{
  height:34px;padding:0 11px;font-size:13px;font-family:inherit;color:#1f2437;
  border:1px solid #DFE3EF;border-radius:var(--radius);background:#FBFcFF;outline:none;min-width:150px;
  transition:border-color var(--transition),background var(--transition);
}
.filter-bar .finput{min-width:220px}
.filter-bar .finput:focus,.filter-bar .fselect:focus{border-color:var(--brand);background:#fff}

/* ============ 行内操作 ============ */
.col-actions{width:130px}
.actions{white-space:nowrap}
.actions a{color:var(--brand);text-decoration:none;margin-right:12px;font-size:13px}
.actions a:hover{color:var(--brand-hover)}
.actions form{display:inline}
.link-danger{background:none;border:0;color:var(--danger);cursor:pointer;font-size:13px;padding:0;font-family:inherit}
.link-danger:hover{text-decoration:underline}

/* ============ 分页 ============ */
.pagination{display:flex;gap:8px;align-items:center;margin-top:14px;font-size:13px;color:var(--text-muted);flex-wrap:wrap}
.pagination a,.pagination .pg{
  display:inline-flex;align-items:center;justify-content:center;
  height:32px;padding:0 11px;border:1px solid #DFE3EF;border-radius:6px;
  background:var(--surface);color:#4A5170;text-decoration:none;transition:all var(--transition);
}
.pagination a:hover{background:#F1F3FB}
.pagination .cur{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ============ 提示条 ============ */
.alert{
  background:#FDECEC;border-left:3px solid var(--danger);color:#B3261E;
  border-radius:8px;padding:11px 15px;font-size:13px;margin-bottom:14px;line-height:1.8;
}
.alert.ok{background:#EAF7EE;border-left-color:#34A853;color:#1E7A3C}

/* ============ 两栏 ============ */
.panel-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:16px}

/* ============ 题库：选项与知识点 ============ */
.option-line{display:flex;gap:8px;align-items:center;margin-bottom:8px;flex-wrap:wrap}
.option-line .opt-label{width:56px;flex:none;text-align:center}
.option-line .opt-content{flex:1;min-width:0}
.option-line .opt-analysis{flex:1 1 100%;min-width:0}
.option-line .opt-correct{flex:none;font-size:13px;color:#4A5170;white-space:nowrap}
.kp-list{display:flex;flex-wrap:wrap;gap:10px 16px}
.kp-item{font-size:13px;display:inline-flex;align-items:center;gap:5px}

/* ============ 学习报告 ============ */
.report-header{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px}
.report-header h3{margin:0;font-size:15px;font-weight:600;color:#1f2437;flex:none}
.report-meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13px;color:var(--text-secondary)}
.report-header .btn{margin-left:auto}

/* ============ 登录页 ============ */
.login-body{
  display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:linear-gradient(135deg,#4F46E5,#6366F1);
}
.login-card{
  width:380px;max-width:92vw;background:var(--surface);
  border-radius:14px;padding:36px 32px;box-shadow:var(--shadow-lg);
}
.login-card h1{margin:0;font-size:20px;font-weight:700}
.login-card .sub{color:var(--text-muted);font-size:13px;margin:6px 0 22px}
.login-card label{display:block;font-size:13px;font-weight:500;color:var(--text);margin-bottom:14px}
.login-card input{
  display:block;width:100%;margin-top:6px;padding:10px 12px;font-size:14px;
  border:1px solid #DFE3EF;border-radius:8px;background:#FBFcFF;outline:none;
  transition:border-color var(--transition),box-shadow var(--transition);
}
.login-card input:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(79,70,229,.09)}
.login-body .alert{border-radius:8px}

/* ============ 错误页 ============ */
.error-page{max-width:520px;margin:100px auto;text-align:center}
.error-page h1{font-size:64px;margin:0;color:var(--brand);font-weight:700}
.error-page p{color:var(--text-muted)}

/* ============ 区块小标题 ============ */
.sec-title{display:flex;align-items:center;gap:8px;margin:0 0 10px;font-size:14px;font-weight:600;color:#1f2437}
.sec-title::before{content:'';width:3px;height:14px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand),#6366F1)}

/* ============ Tab / 分段切换 ============ */
.tabs-bar{display:flex;padding:14px 18px 0;flex-wrap:wrap}
.seg{display:inline-flex;background:#EEF0F6;border-radius:9px;padding:3px;gap:2px}
.seg a{
  padding:7px 18px;border-radius:7px;font-size:13.5px;color:#5B6484;
  text-decoration:none;transition:all var(--transition);white-space:nowrap;
}
.seg a:hover{color:var(--brand)}
.seg a.active{background:#fff;color:var(--brand);font-weight:600;box-shadow:0 1px 2px rgba(15,23,42,.10)}
/* 用 button 做页内页签时复用同一套样式 */
.seg button{
  padding:7px 18px;border:0;border-radius:7px;background:transparent;
  font-size:13.5px;color:#5B6484;cursor:pointer;transition:all var(--transition);
  white-space:nowrap;font-family:inherit;
}
.seg button:hover{color:var(--brand)}
.seg button.active{background:#fff;color:var(--brand);font-weight:600;box-shadow:0 1px 2px rgba(15,23,42,.10)}
/* 报告页页签面板 */
.report-tab[hidden]{display:none!important}
.report-tabs{padding:14px 18px 0}

/* ============ 语音试听按钮 ============ */
.btn-speak{
  display:inline-flex;align-items:center;gap:4px;height:26px;padding:0 9px;
  border:1px solid var(--border);border-radius:6px;background:#fff;color:#4a5170;
  font-size:12px;cursor:pointer;white-space:nowrap;transition:all var(--transition);font-family:inherit;
}
.btn-speak:hover{border-color:var(--brand);color:var(--brand);background:#F4F6FA}

/* ============ 预览按钮 / 弹窗 ============ */
.btn-preview{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border:1px solid var(--border);border-radius:6px;background:#fff;color:#4a5170;
  font-size:12px;cursor:pointer;font-family:inherit;transition:all var(--transition);
}
.btn-preview:hover{border-color:var(--brand);color:var(--brand);background:#F4F6FA}
.modal-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:1000;
  display:flex;align-items:center;justify-content:center;padding:24px;
}
.modal-mask[hidden]{display:none}
.modal-box{
  background:#fff;border-radius:12px;width:100%;max-width:560px;
  max-height:calc(100vh - 48px);display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);overflow:hidden;
}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.modal-head h3{margin:0;font-size:15px;font-weight:600;color:#1f2437}
.modal-x{border:0;background:transparent;font-size:20px;line-height:1;color:var(--text-muted);cursor:pointer;padding:2px 6px;border-radius:6px}
.modal-x:hover{background:#F4F6FA;color:#1f2437}
.modal-body{padding:18px 22px 22px;overflow-y:auto}

/* 关卡作答详情（弹窗内列表） */
.qd-list{display:flex;flex-direction:column;gap:10px}
.qd-item{border:1px solid var(--border);border-left:4px solid var(--success);
  border-radius:10px;padding:12px 14px;background:#fff}
.qd-item.is-wrong{border-left-color:var(--danger)}
.qd-head{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.qd-head .tag{margin-left:auto}
.qd-no{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
  width:22px;height:22px;border-radius:50%;background:var(--brand-light);
  color:var(--brand);font-size:12px;font-weight:600}
.qd-type{font-size:12px;color:var(--text-muted)}
.qd-stem{font-size:14px;line-height:1.7;font-weight:500;color:#1f2437;
  margin-bottom:8px;word-break:break-word}
.qd-line{display:flex;gap:10px;font-size:13px;line-height:1.9}
.qd-k{flex:0 0 68px;color:var(--text-muted)}
.qd-v{color:#1f2437;word-break:break-word}
.qd-v.strong{color:var(--success);font-weight:600}
.qd-tip{margin-top:8px;padding:8px 10px;border-radius:8px;background:var(--warning-light);
  color:var(--warning);font-size:12.5px;line-height:1.7;word-break:break-word}

/* 预览内容（贴近学生做题界面） */
.pv-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.pv-badge{display:inline-flex;align-items:center;padding:3px 12px;border-radius:100px;
  background:var(--brand-light);color:var(--brand);font-size:12px;font-weight:600}
.pv-chip{display:inline-flex;align-items:center;padding:4px 10px;border-radius:6px;
  background:#F7F8FC;color:#4a5170;font-size:12.5px}

.pv-stem{font-size:16px;line-height:1.9;color:#1f2437;font-weight:500;margin-bottom:16px}
.pv-audio{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;padding:12px 14px;
  background:#F7F8FC;border-radius:10px}
.pv-audio-hint{font-size:12.5px;color:var(--text-muted)}

.pv-options{display:flex;flex-direction:column;gap:9px}
.pv-opt{display:flex;align-items:center;gap:11px;padding:11px 14px;
  border:1px solid var(--border);border-radius:10px;background:#fff;
  font-size:14px;color:#1f2437;transition:all var(--transition)}
.pv-opt-label{width:24px;height:24px;flex:none;border-radius:50%;
  background:#EEF0F6;color:#5B6484;font-size:12px;font-weight:600;
  display:flex;align-items:center;justify-content:center}
.pv-opt-text{flex:1;min-width:0}
.pv-opt-mark{color:var(--success);font-weight:700;font-size:15px}
.pv-opt.is-correct{border-color:var(--success);background:#EAF7EE}
.pv-opt.is-correct .pv-opt-label{background:var(--success);color:#fff}

.pv-answer-box{margin-top:4px;padding:13px 15px;border-radius:10px;
  background:#EAF7EE;border:1px solid rgba(5,150,105,.25);color:#1E7A3C;font-size:14px}
.pv-answer-box b{font-weight:700}

.pv-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.pv-analysis{margin-top:14px;padding:14px 16px;border-radius:10px;
  background:#EEF2FF;border:1px solid #E0E7FF}
.pv-analysis-h{font-size:13px;font-weight:600;color:var(--brand);margin-bottom:8px}
.pv-analysis-t{font-size:14px;color:#3F4761;line-height:2}
.pv-eq{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pv-eq-l{font-size:16px;font-weight:700;color:#1f2437}
.pv-eq-op{font-size:15px;font-weight:700;color:var(--brand)}
.pv-eq-r{font-size:15px;font-weight:600;color:#1E7A3C}

/* 单词注释预览 */
.pv-word-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;
  padding-bottom:14px;border-bottom:1px solid var(--line)}
.pv-word{font-size:24px;font-weight:700;color:#1f2437}
.pv-phonetic{font-size:14px;color:var(--text-muted)}
.pv-word-head .btn-speak{margin-left:auto}
.pv-sec{margin-bottom:16px}
.pv-sec-h{font-size:13px;font-weight:600;color:#1f2437;margin-bottom:7px}
.pv-sec-b{font-size:13px;line-height:1.85;color:#3F4761;word-break:break-word}
.pv-mean{margin-bottom:4px}
.pv-pos{display:inline-block;min-width:30px;margin-right:6px;padding:1px 6px;border-radius:5px;
  background:var(--brand-light);color:var(--brand);font-size:12px;font-weight:600}
.pv-list{margin:0;padding-left:20px}
.pv-list li{margin-bottom:4px}
.pv-sent{margin-bottom:8px}
.pv-sent-en{display:block;font-size:13.5px;font-weight:500;color:#1f2437}
.pv-sent-zh{display:block;font-size:12.5px;color:var(--text-muted)}

/* 账号表单 · 学习范围多选 */
.form-body > form > p,
.form-body > form > .hint{grid-column:1/-1}
#scopeBlock{display:contents}
.form-cols-4{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px 20px}
.form-row-sm .form-control{max-width:260px}
.form-section-title{grid-column:1/-1;font-size:14px;font-weight:600;color:#1f2437;margin:8px 0 2px;
  padding-top:18px;border-top:1px dashed var(--line)}
.form-section-title:first-of-type{margin-top:0;padding-top:0;border-top:0}
.scope-tip{margin:0 0 14px}
.scope-wrap{grid-column:1/-1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.scope-group{background:#F8FAFC;border:1px solid #EDF0F7;border-radius:10px;padding:13px 15px 15px}
.scope-head{display:flex;align-items:center;gap:10px;margin-bottom:11px}
.scope-name{font-size:13px;font-weight:600;color:#1f2437}
.scope-count{font-size:12px;color:var(--text-muted)}
.scope-btns{margin-left:auto;display:inline-flex;align-items:center;gap:4px}
.scope-link{border:0;background:none;color:var(--brand);font-size:12px;
  cursor:pointer;padding:3px 8px;border-radius:6px;transition:all var(--transition)}
.scope-link:hover{background:var(--brand-light)}
.pick-grid{display:flex;flex-wrap:wrap;gap:8px}
.pick{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;
  border:1px solid #E2E6F0;border-radius:100px;background:#fff;font-size:12.5px;color:#3F4761;
  cursor:pointer;transition:all var(--transition);user-select:none}
.pick:hover{border-color:var(--brand);color:var(--brand)}
.pick input{accent-color:var(--brand);margin:0}
.pick.is-on{border-color:var(--brand);background:var(--brand-light);color:var(--brand);font-weight:600}

/* 单元区块：按「年级·分册」分组，各组可独立勾选 */
.pick-subgroup{padding:10px 0 2px;border-top:1px dashed #E7ECF6}
.pick-subgroup:first-of-type{border-top:0;padding-top:2px}
.pick-subhead{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.pick-subname{font-size:12.5px;font-weight:600;color:#475569}
.pick-subcount{font-size:11.5px;color:var(--text-muted)}
.pick-subbtns{margin-left:auto;display:inline-flex;align-items:center;gap:4px}
@media (max-width:1200px){
  .scope-wrap{grid-template-columns:1fr}
}
/* 窄屏（手机）下账号信息回退为两列 */
@media (max-width:720px){
  .form-cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* 关卡表单：星级奖励阶梯 */
.star-ladder{display:flex;flex-wrap:wrap;gap:8px}
.star-ladder .sl-item{display:inline-flex;align-items:center;gap:3px;padding:6px 13px;
  border:1px solid #E2E6F0;border-radius:100px;background:#fff;font-size:12.5px;color:#3F4761}
.star-ladder .sl-item b{font-size:13.5px;font-weight:700;color:#B45309}