/* ===== 电学闯关 · 中学电路沙盒 ===== */
:root{
  --bg:#eef2f7; --panel:#ffffff; --line:#dbe3ee; --ink:#25324a; --muted:#7b8798;
  --accent:#2f6fed; --accent-soft:#e8f0fe; --warn:#e0482f; --gold:#f5a623; --ok:#1fa14a;
  --radius:12px;
  --shadow:0 4px 18px rgba(37,50,74,.10);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;overflow:hidden}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg);color:var(--ink);display:flex;flex-direction:column;
  user-select:none;-webkit-user-select:none;touch-action:none;
}
button{font-family:inherit;cursor:pointer}
.hidden{display:none!important}

/* ===== 顶部工具栏 ===== */
#toolbar{
  height:52px;flex:0 0 52px;display:flex;align-items:center;gap:10px;padding:0 14px;
  background:linear-gradient(180deg,#ffffff,#f6f8fc);border-bottom:1px solid var(--line);
  box-shadow:0 1px 6px rgba(37,50,74,.06);z-index:20;position:relative;
}
.brand{font-weight:800;font-size:16px;white-space:nowrap;color:#1c2b4a}
.brand .sub{font-size:11px;font-weight:600;color:var(--muted);margin-left:6px}
.mode-switch{display:flex;background:var(--accent-soft);border-radius:10px;padding:3px;margin-left:8px}
.mode-switch button{
  border:none;background:transparent;color:var(--muted);font-size:12.5px;font-weight:700;
  padding:5px 14px;border-radius:8px;transition:all .15s;
}
.mode-switch button.active{background:var(--accent);color:#fff;box-shadow:0 2px 6px rgba(47,111,237,.35)}
.tb-btn{
  height:32px;padding:0 12px;border-radius:9px;border:1px solid var(--line);background:#fff;
  font-size:12.5px;font-weight:600;color:var(--ink);
}
.tb-btn:hover{border-color:var(--accent);color:var(--accent)}
.level-badge{
  font-size:12px;font-weight:700;color:var(--accent);background:var(--accent-soft);
  padding:4px 10px;border-radius:8px;white-space:nowrap;max-width:200px;overflow:hidden;text-overflow:ellipsis;
}
.tb-group{display:flex;gap:4px}
.tb-icon{
  width:32px;height:32px;border-radius:9px;border:1px solid var(--line);background:#fff;
  font-size:15px;color:var(--ink);display:flex;align-items:center;justify-content:center;transition:all .12s;
}
.tb-icon:hover{border-color:var(--accent);background:var(--accent-soft)}
.tb-icon:disabled{opacity:.35;cursor:default}
.tb-icon:disabled:hover{border-color:var(--line);background:#fff}
.run-btn{
  height:34px;padding:0 18px;border:none;border-radius:10px;background:var(--ok);color:#fff;
  font-size:13.5px;font-weight:800;letter-spacing:1px;box-shadow:0 3px 10px rgba(31,161,74,.35);transition:all .15s;
}
.run-btn:hover{filter:brightness(1.08)}
.run-btn.running{background:var(--warn);box-shadow:0 3px 10px rgba(224,72,47,.35)}
.tb-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.clock{font-size:12px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums}

/* ===== 主区域 ===== */
#main{flex:1;display:flex;min-height:0}

/* ===== 元件库 ===== */
#library{
  width:216px;flex:0 0 216px;background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;min-height:0;z-index:10;
}
.lib-head{
  padding:10px 14px;font-size:13px;font-weight:800;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.lib-tip{font-size:10.5px;font-weight:600;color:var(--muted);background:var(--bg);padding:2px 8px;border-radius:8px}
#libBody{flex:1;overflow-y:auto;padding:8px}
.lib-cat{margin-bottom:6px}
.lib-cat-head{
  display:flex;align-items:center;gap:6px;padding:7px 8px;font-size:12.5px;font-weight:800;
  color:var(--ink);cursor:pointer;border-radius:8px;
}
.lib-cat-head:hover{background:var(--bg)}
.lib-cat-head .arrow{margin-left:auto;transition:transform .2s;font-size:10px;color:var(--muted)}
.lib-cat.closed .arrow{transform:rotate(-90deg)}
.lib-items{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:2px 2px 6px}
.lib-cat.closed .lib-items{display:none}
.lib-item{
  background:#fbfcfe;border:1.5px solid var(--line);border-radius:10px;padding:6px 2px 4px;
  display:flex;flex-direction:column;align-items:center;gap:2px;cursor:grab;transition:all .12s;position:relative;
}
.lib-item:hover{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-1px);box-shadow:0 3px 8px rgba(47,111,237,.15)}
.lib-item:active{cursor:grabbing}
.lib-item canvas{width:76px;height:44px;pointer-events:none}
.lib-item .li-name{font-size:11px;font-weight:700;color:var(--ink);white-space:nowrap}
.lib-hint{
  grid-column:1/-1;font-size:11px;line-height:1.6;color:var(--muted);background:var(--bg);
  border:1.5px dashed var(--line);border-radius:10px;padding:8px 10px;
}

/* ===== 画布 ===== */
#canvasWrap{flex:1;position:relative;min-width:0;background:#fbfcfe}
#canvas{position:absolute;inset:0;width:100%;height:100%;display:block;cursor:default}
#canvas.grabbing{cursor:grabbing}
#canvas.placing{cursor:copy}
#hudHints{position:absolute;top:10px;left:12px;right:12px;display:flex;gap:8px;pointer-events:none;flex-wrap:wrap}
.hud-chip{
  font-size:11.5px;font-weight:700;padding:5px 10px;border-radius:9px;
  background:rgba(255,255,255,.92);border:1px solid var(--line);box-shadow:var(--shadow);color:var(--ink);
}
.hud-chip.warn{color:var(--warn);border-color:#f3c1b7;background:#fff5f2}
.hud-chip.good{color:var(--ok);border-color:#bfe5cc;background:#f2fbf5}
.hud-chip b{color:var(--accent)}

.level-task{
  position:absolute;right:12px;bottom:12px;width:270px;background:rgba(255,255,255,.96);
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:12px 14px;font-size:12.5px;z-index:5;
}
.task-title{font-weight:800;font-size:13px;margin-bottom:6px}
.task-text{line-height:1.65;color:#41506b}
.task-actions{margin-top:8px;display:flex;gap:6px;flex-wrap:wrap}
.task-actions .btn{height:28px;font-size:11.5px;padding:0 10px}
.star-preview{margin-top:8px;display:flex;gap:10px;font-size:10.5px;color:var(--muted);line-height:1.5}
.star-preview .sp{flex:1}
.star-preview .sp b{color:var(--gold);font-size:12px}
.star-preview .sp.done b{color:var(--ok)}

/* ===== 底部属性栏 ===== */
#bottombar{
  height:86px;flex:0 0 86px;background:var(--panel);border-top:1px solid var(--line);
  display:flex;align-items:center;padding:0 16px;z-index:15;overflow-x:auto;
}
.prop-panel{display:flex;align-items:center;gap:14px;width:100%}
.prop-empty{font-size:12.5px;color:var(--muted)}
.pp-name{font-size:14px;font-weight:800;white-space:nowrap;display:flex;align-items:center;gap:8px}
.pp-name .pp-type{font-size:10px;color:var(--accent);background:var(--accent-soft);padding:2px 7px;border-radius:6px}
.pp-group{display:flex;align-items:center;gap:6px;white-space:nowrap}
.pp-label{font-size:11.5px;font-weight:700;color:var(--muted)}
.pp-val{font-size:12px;font-weight:800;color:var(--accent);min-width:44px;font-variant-numeric:tabular-nums}
.seg{display:flex;background:var(--bg);border-radius:8px;padding:2px;gap:2px}
.seg button{
  border:none;background:transparent;font-size:11.5px;font-weight:700;color:var(--muted);
  padding:4px 10px;border-radius:6px;
}
.seg button.active{background:#fff;color:var(--accent);box-shadow:0 1px 4px rgba(37,50,74,.18)}
input[type=range].pp-range{width:130px;accent-color:var(--accent)}
.btn{
  height:32px;padding:0 16px;border-radius:9px;border:1px solid var(--line);background:#fff;
  font-size:12.5px;font-weight:700;color:var(--ink);transition:all .12s;white-space:nowrap;
}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 2px 8px rgba(47,111,237,.3)}
.btn.primary:hover{filter:brightness(1.08);color:#fff}
.btn.danger{color:var(--warn);border-color:#f3c1b7}
.btn.danger:hover{background:#fff5f2}
.btn.big{height:44px;font-size:15px;padding:0 28px;border-radius:12px}
.btn:disabled{opacity:.4;cursor:default}

/* ===== 弹窗 ===== */
.modal-mask{
  position:fixed;inset:0;background:rgba(28,38,58,.45);backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn .18s;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{
  background:#fff;border-radius:18px;padding:26px 30px;max-width:620px;width:min(92vw,620px);
  max-height:86vh;overflow-y:auto;box-shadow:0 20px 60px rgba(20,30,50,.35);animation:popIn .22s;
}
@keyframes popIn{from{transform:scale(.92) translateY(12px);opacity:0}to{transform:none;opacity:1}}
.modal h2{font-size:19px;margin-bottom:14px;text-align:center}
.modal-btns{display:flex;gap:10px;justify-content:center;margin-top:18px;flex-wrap:wrap}

/* 通关 */
.win-modal{text-align:center}
.win-burst{font-size:44px;animation:burst .5s}
@keyframes burst{0%{transform:scale(0)}60%{transform:scale(1.3)}100%{transform:scale(1)}}
.win-stars{display:flex;justify-content:center;gap:12px;margin:10px 0 4px}
.wstar{font-size:42px;color:#dfe5ee;transition:all .2s}
.wstar.lit{color:var(--gold);text-shadow:0 0 18px rgba(245,166,35,.6);animation:starPop .4s backwards}
.wstar:nth-child(1).lit{animation-delay:.15s}
.wstar:nth-child(2).lit{animation-delay:.45s}
.wstar:nth-child(3).lit{animation-delay:.75s}
@keyframes starPop{0%{transform:scale(0) rotate(-40deg)}70%{transform:scale(1.35)}100%{transform:scale(1)}}
.win-star-tips{font-size:11.5px;color:var(--muted);line-height:1.7;margin-bottom:6px}
.know-box{
  background:linear-gradient(180deg,#f4f8ff,#eef3fd);border:1px solid #d7e3fa;border-radius:12px;
  padding:12px 16px;text-align:left;margin-top:12px;
}
.know-title{font-size:12.5px;font-weight:800;color:var(--accent);margin-bottom:5px}
.know-text{font-size:13px;line-height:1.8;color:#33445f}

/* 短路警告 */
.short-modal{border-top:5px solid var(--warn);text-align:center}
.short-modal h2{color:var(--warn)}
.short-icon{font-size:40px;animation:shake .5s}
@keyframes shake{0%,100%{transform:none}20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}
.short-text{font-size:14px;font-weight:700;color:#7a2d1e;background:#fdf0ed;border-radius:10px;padding:10px 14px;margin-bottom:4px}

/* 选关 */
.levels-modal{max-width:720px;width:min(94vw,720px)}
.chapter-list{display:flex;flex-direction:column;gap:14px;margin-top:6px}
.chapter{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.chapter-head{
  padding:9px 14px;font-size:13px;font-weight:800;color:#fff;display:flex;align-items:center;gap:8px;
}
.chapter-head .chs{font-size:10.5px;font-weight:600;opacity:.85;margin-left:auto}
.level-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:12px}
.level-cell{
  border:1.5px solid var(--line);border-radius:12px;padding:9px 6px 7px;text-align:center;cursor:pointer;
  transition:all .13s;background:#fbfcfe;
}
.level-cell:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 10px rgba(47,111,237,.15)}
.level-cell.locked{opacity:.45;cursor:not-allowed;filter:grayscale(1)}
.level-cell.locked:hover{transform:none;box-shadow:none}
.level-cell .lc-id{font-size:10.5px;font-weight:800;color:var(--muted)}
.level-cell .lc-name{font-size:12.5px;font-weight:800;margin:2px 0 4px}
.level-cell .lc-stars{font-size:12px;color:#dfe5ee;letter-spacing:2px}
.level-cell .lc-stars .s{color:var(--gold)}
.level-cell.current{border-color:var(--accent);background:var(--accent-soft)}
.sb-tip{font-size:12px;color:var(--muted);text-align:center;margin-bottom:4px}

/* 帮助 */
.help-modal{max-width:640px;width:min(94vw,640px)}
.help-tabs{display:flex;gap:6px;margin-bottom:12px}
.htab{
  flex:1;height:34px;border:1px solid var(--line);background:#fff;border-radius:9px;font-size:12.5px;font-weight:700;color:var(--muted);
}
.htab.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.help-body{font-size:13px;line-height:1.7;max-height:46vh;overflow-y:auto}
.help-table{width:100%;border-collapse:collapse}
.help-table td{padding:7px 8px;border-bottom:1px dashed var(--line);vertical-align:top;font-size:12.5px}
.help-table td:first-child{font-weight:800;white-space:nowrap;width:110px}
.know-card{
  border:1px solid #d7e3fa;border-radius:12px;padding:12px 16px;margin-bottom:10px;background:#f8faff;
}
.know-card h3{font-size:13.5px;color:var(--accent);margin-bottom:5px}
.know-card p{font-size:12.5px;line-height:1.8;color:#33445f}

/* 测验 */
.quiz-modal{max-width:520px;width:min(92vw,520px);text-align:center}
.quiz-body{display:flex;flex-direction:column;align-items:center;gap:12px}
.quiz-q{font-size:14.5px;font-weight:700;line-height:1.7}
.quiz-canvas{background:#fbfcfe;border:1.5px solid var(--line);border-radius:12px}
.quiz-opts{display:flex;gap:12px;justify-content:center}
.quiz-opts .btn{min-width:110px;height:40px;font-size:14px}
.quiz-feedback{min-height:24px;margin-top:10px;font-size:13px;font-weight:800}
.quiz-feedback.ok{color:var(--ok)}
.quiz-feedback.bad{color:var(--warn)}

/* 数据表 */
.table-modal{max-width:560px;width:min(94vw,560px)}
.table-body{max-height:40vh;overflow-y:auto}
table.data-table{width:100%;border-collapse:collapse;font-size:12.5px}
.data-table th,.data-table td{border:1px solid var(--line);padding:6px 8px;text-align:center;font-variant-numeric:tabular-nums}
.data-table th{background:var(--bg);font-weight:800;font-size:11.5px}
.data-table tr:nth-child(even) td{background:#fafbfe}
.table-empty{color:var(--muted);font-size:12.5px;text-align:center;padding:16px}
.table-answer{margin-top:12px;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;font-size:13px}
.table-answer input{
  width:110px;height:34px;border:1.5px solid var(--line);border-radius:9px;text-align:center;
  font-size:15px;font-weight:800;color:var(--accent);outline:none;
}
.table-answer input:focus{border-color:var(--accent)}
.table-answer .ans-unit{font-weight:800;color:var(--muted)}

/* 欢迎页 */
.welcome{
  position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1200px 700px at 20% 0%,#dfe9fb 0%,#eef2f7 55%,#e4ebf5 100%);
}
.welcome-card{
  text-align:center;background:rgba(255,255,255,.88);backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.9);border-radius:26px;padding:44px 60px;box-shadow:0 24px 80px rgba(40,60,100,.18);
}
.w-logo{font-size:56px;animation:burst .6s}
.welcome h1{font-size:34px;letter-spacing:6px;margin:6px 0 4px;color:#1c2b4a}
.w-sub{font-size:13.5px;color:var(--muted);font-weight:600}
.w-feats{display:flex;gap:10px;justify-content:center;margin:20px 0 26px;flex-wrap:wrap}
.w-feats span{
  font-size:12px;font-weight:700;color:var(--accent);background:var(--accent-soft);
  padding:6px 13px;border-radius:20px;
}
.w-btns{display:flex;gap:14px;justify-content:center}
.w-tip{margin-top:20px;font-size:11px;color:#a5aebc}

/* Toast */
#toasts{position:fixed;top:64px;left:50%;transform:translateX(-50%);z-index:300;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{
  background:rgba(30,40,60,.92);color:#fff;font-size:12.5px;font-weight:600;padding:9px 18px;
  border-radius:22px;box-shadow:0 6px 20px rgba(20,30,50,.3);animation:toastIn .25s;max-width:76vw;text-align:center;
}
.toast.warn{background:rgba(190,54,32,.95)}
.toast.good{background:rgba(22,120,60,.95)}
@keyframes toastIn{from{transform:translateY(-12px);opacity:0}to{transform:none;opacity:1}}

/* 短路红闪 */
#canvasWrap.short-flash::after{
  content:'';position:absolute;inset:0;pointer-events:none;z-index:8;
  background:radial-gradient(ellipse at center,transparent 40%,rgba(224,60,40,.38) 100%);
  animation:shortFlash .45s 4;
}
@keyframes shortFlash{0%,100%{opacity:0}50%{opacity:1}}

/* 错题本 */
.tb-icon{position:relative}
.tb-icon .mb{
  position:absolute;top:-5px;right:-5px;min-width:15px;height:15px;padding:0 4px;
  background:var(--warn);color:#fff;font-size:9.5px;font-weight:800;border-radius:8px;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.mistakes-modal{max-width:600px;width:min(94vw,600px)}
.ms-tip{font-size:11.5px;color:var(--muted);text-align:center;margin:-6px 0 10px}
.mistake-stats{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px;justify-content:center}
.mistake-stats span{
  font-size:11px;font-weight:700;color:var(--warn);background:#fdf0ed;
  padding:3px 10px;border-radius:14px;
}
.mistake-stats .ms-none{color:var(--ok);background:#f2fbf5}
.mistake-list{max-height:48vh;overflow-y:auto;display:flex;flex-direction:column;gap:8px}
.mistake-item{border:1px solid var(--line);border-radius:10px;padding:9px 12px}
.mistake-item .mi-head{display:flex;gap:8px;align-items:center;font-size:12px;font-weight:700;flex-wrap:wrap}
.mistake-item .mi-type{color:var(--warn);background:#fdf0ed;padding:1px 8px;border-radius:8px;font-size:11px}
.mistake-item .mi-detail{color:var(--muted);font-weight:600}
.mistake-item .mi-time{margin-left:auto;font-size:10.5px;color:var(--muted);font-weight:600}
.mistake-item .mi-know{
  font-size:12px;color:#33445f;line-height:1.7;margin-top:5px;
  background:#f8faff;border-left:3px solid var(--accent);border-radius:0 8px 8px 0;padding:6px 10px;
}

/* 家庭用电 HUD */
.home-hud{
  position:absolute;top:10px;left:12px;width:228px;z-index:6;
  background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow);padding:10px 14px;font-size:12px;
}
.home-hud.hidden{display:none}
.hh-title{font-weight:800;font-size:12.5px;margin-bottom:6px;color:#1c2b4a}
.hh-row{display:flex;align-items:center;justify-content:space-between;padding:3px 0;border-bottom:1px dashed #eef1f6}
.hh-row:last-child{border-bottom:none}
.hh-label{color:var(--muted);font-weight:700;font-size:11px}
.hh-val{font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;font-size:13px}
.hh-val.small{font-size:11px;color:#41506b}
.hh-val.danger{color:#fff;background:var(--warn);padding:1px 8px;border-radius:8px;animation:blinkDanger .5s infinite alternate}
@keyframes blinkDanger{from{opacity:1}to{opacity:.45}}
.hh-val:not(.danger){background:var(--bg);padding:1px 8px;border-radius:8px}

/* 导线规格选择器 */
.lib-item.wspec{cursor:pointer;padding:8px 4px}
.lib-item.wspec .ws-wire{width:56px;border-radius:3px;margin-bottom:3px}
.lib-item.wspec .li-sub{font-size:9.5px;color:var(--muted);font-weight:700}
.lib-item.wspec.active{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 2px rgba(47,111,237,.25)}
.lib-item.wspec.active::after{content:'✓ 已选';position:absolute;top:3px;right:5px;font-size:9px;color:var(--accent);font-weight:800}

/* 家庭用电规则弹窗 */
.home-intro{max-width:560px;width:min(94vw,560px)}
.home-rules{font-size:13px;line-height:1.75;text-align:left}
.home-rules .hr-lead{background:#f2f6fd;border-radius:10px;padding:9px 13px;margin-bottom:10px}
.home-rules ul{padding-left:4px;list-style:none;display:flex;flex-direction:column;gap:7px}
.home-rules li{background:#fbfcfe;border:1px solid var(--line);border-radius:10px;padding:8px 12px}
.home-rules .hr-calc{color:var(--accent);font-weight:700;background:var(--accent-soft);border-radius:10px;padding:8px 13px;margin-top:10px}

/* ===== 触控/平板适配（pointer:coarse 自动启用，?touch=1 可强制） ===== */
body.touch-opt #toolbar{height:60px;flex-basis:60px;overflow-x:auto;overflow-y:hidden}
body.touch-opt .mode-switch{flex:0 0 auto}
body.touch-opt .mode-switch button,
body.touch-opt .tb-btn,
body.touch-opt .run-btn{white-space:nowrap}
body.touch-opt .tb-icon{width:40px;height:40px;font-size:18px;flex:0 0 auto}
body.touch-opt .tb-btn{height:40px;padding:0 14px;font-size:13.5px;flex:0 0 auto}
body.touch-opt .run-btn{height:44px;padding:0 24px;font-size:15px}
body.touch-opt .mode-switch button{padding:8px 16px;font-size:13.5px}
body.touch-opt .btn{height:42px;font-size:14px}
body.touch-opt .btn.big{height:52px;font-size:16px}
body.touch-opt .seg button{padding:8px 14px;font-size:13px}
body.touch-opt input[type=range].pp-range{width:160px;height:32px}
body.touch-opt #bottombar{height:100px;flex-basis:100px;padding:0 18px}
body.touch-opt .lib-item{padding:11px 2px 9px}
body.touch-opt .lib-item .li-name{font-size:12.5px}
body.touch-opt .htab{height:44px;font-size:14px}
body.touch-opt .level-cell{padding:13px 8px 11px}
body.touch-opt .help-table td{padding:11px 10px;font-size:13.5px}
body.touch-opt .level-task{width:280px;padding:14px 16px}
body.touch-opt .task-text{font-size:13.5px}
body.touch-opt .home-hud{width:250px;padding:12px 16px}
body.touch-opt .hh-val{font-size:15px}
@media (pointer:coarse){
  .tb-icon{width:40px;height:40px;font-size:18px}
  .tb-btn{height:40px}
  .run-btn{height:44px}
  .btn{height:42px}
  .seg button{padding:8px 14px}
  #bottombar{height:100px;flex-basis:100px}
  .lib-item{padding:11px 2px 9px}
  .htab{height:44px}
}
/* 元件库可纵向滚动，元件卡片上禁用滚动手势（保证拖拽可用） */
#libBody{touch-action:pan-y}
.lib-item,.lib-item *{touch-action:none}
/* 任务面板可折叠（触控点标题） */
.level-task .task-title{cursor:pointer}
.level-task.collapsed .task-text,
.level-task.collapsed .task-actions,
.level-task.collapsed .star-preview,
.level-task.collapsed .check-list{display:none}
.level-task.collapsed{padding-bottom:9px}
/* 窄屏工具栏收纳 */
@media (max-width:1200px){
  .clock,.level-badge{display:none}
}
@media (max-width:1000px){
  .brand .sub{display:none}
  .tb-btn{padding:0 8px;font-size:12px}
  .mode-switch button{padding:5px 10px;font-size:12px}
  #toolbar{gap:6px;padding:0 8px}
}

/* 窄屏适配（平板横屏） */
@media (max-width:900px){
  #library{width:170px;flex-basis:170px}
  .brand .sub,.level-badge{display:none}
  .level-task{width:220px}
}