:root{
    /* 语文课堂：墨 · 宣纸 · 朱砂 · 青瓷 */
    --ink:#2A2E2B; --muted:#7B7A6E;
    --paper:#FCFAF5; --soft:#F4F0E7; --line:#EAE4D6; --line2:#DAD2C1;
    --brand:#2F6E63; --brand-d:#255A50; --brand-soft:#E5EFEB;      /* 青瓷 celadon —— 常规强调/链接/焦点 */
    --seal:#C13B2C; --seal-d:#A32E21; --seal-soft:#F7E5E0;         /* 朱砂 —— 主行动 / 当前步骤 / 签名 */
    --gold:#C68A36;                                                /* 赭石 —— 次要点缀 */
    --danger:#C13B2C; --danger-soft:#F7E5E0;
    --ok:#2F6E63; --ok-soft:#E5EFEB;
    --navy:#25302D; --navy2:#313F3A; --navy-line:#3E4F49; --navy-soft:#1E2825;   /* 墨色侧栏 */
    --side-txt:#CCC8B9; --side-dim:#8B9089; --side-active:#FBF7EC;
    --shadow:0 1px 2px rgba(40,46,40,.05), 0 12px 34px rgba(40,46,40,.09);
    --radius:16px;
    --font-body:"微软雅黑","Microsoft YaHei","PingFang SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    --font-kai:"楷体","楷体_GB2312","STKaiti","KaiTi",serif;
  }
  *{box-sizing:border-box}
  html,body{margin:0;padding:0}
  body{font-family:var(--font-body);background:var(--paper);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
  button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
  input,textarea{font-family:inherit;font-size:inherit;color:inherit}

  .layout{display:flex;min-height:100vh}

  /* ---------- 左侧深蓝导航 ---------- */
  .sidebar{width:250px;flex-shrink:0;background:var(--navy);color:var(--side-txt);position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:22px 16px}
  .brand{display:flex;align-items:center;gap:12px;padding:6px 6px 22px}
  /* 朱砂印章：绘 */
  .brand .logo{width:40px;height:40px;border-radius:9px;background:var(--seal);display:grid;place-items:center;flex-shrink:0;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.18), 0 4px 12px rgba(193,59,44,.3)}
  .brand .logo .seal{font-family:var(--font-kai);color:#FCEFE9;font-size:24px;font-weight:700;line-height:1}
  .brand .bt{font-family:var(--font-kai);font-weight:700;font-size:22px;letter-spacing:3px;color:var(--side-active)}
  .brand .bs{display:block;font-weight:500;font-size:10.5px;letter-spacing:3px;color:var(--side-dim);margin-top:1px}
  .nav{display:flex;flex-direction:column;gap:3px;margin-top:6px}
  .navi{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:11px;cursor:pointer;transition:.16s;position:relative}
  .navi:hover{background:var(--navy2)}
  .navi.disabled{opacity:.4;cursor:not-allowed}
  .navi.active{background:var(--navy2)}
  .navi.active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3.5px;height:24px;border-radius:0 3px 3px 0;background:var(--seal)}
  /* 田字格：一步一格 */
  .navi .idx{width:28px;height:28px;border-radius:7px;background:var(--navy-soft);border:1px solid var(--navy-line);background-image:linear-gradient(var(--navy-line),var(--navy-line)),linear-gradient(var(--navy-line),var(--navy-line));background-size:1px 100%,100% 1px;background-position:center,center;background-repeat:no-repeat;display:grid;place-items:center;font-size:13px;font-weight:800;color:var(--side-txt);flex-shrink:0;transition:.16s}
  .navi.active .idx{background:var(--seal);background-image:none;color:#FCEFE9;border-color:var(--seal);box-shadow:0 3px 10px rgba(193,59,44,.35)}
  .navi.done .idx{background:var(--brand);background-image:none;color:#EAF3F0;border-color:var(--brand)}
  .navi .lbl{font-weight:700;font-size:14.5px;color:var(--side-txt)}
  .navi.active .lbl,.navi.done .lbl{color:var(--side-active)}
  .navi .sub{display:block;font-weight:400;font-size:11px;color:var(--side-dim);margin-top:-1px}
  .side-sp{flex:1}
  .side-tools{display:flex;gap:8px;padding:8px 6px 4px;border-top:1px solid var(--navy-line);margin-top:8px}
  .side-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:9px 4px;border-radius:9px;color:var(--side-dim);font-size:11px;font-weight:600}
  .side-btn:hover{background:var(--navy2);color:#fff}
  .side-mode{margin:10px 6px 2px;font-size:11.5px;font-weight:600;padding:6px 10px;border-radius:8px;display:flex;align-items:center;gap:7px}
  .side-mode.demo{background:rgba(198,138,54,.16);color:#E0B063}
  .side-mode.live{background:rgba(47,110,99,.22);color:#8FCDBF}
  .side-mode .dot{width:7px;height:7px;border-radius:50%;background:currentColor}

  /* ---------- 右侧白色内容 ---------- */
  .main{flex:1;min-width:0;background:var(--paper)}
  .container{max-width:900px;margin:0 auto;padding:40px 40px 90px}
  .view{display:none;animation:fade .3s ease}
  .view.show{display:block}
  @keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

  h1.h1{font-family:var(--font-kai);font-size:28px;font-weight:700;letter-spacing:.5px;margin:0 0 4px;color:var(--ink)}
  .sub{color:var(--muted);font-size:15px;margin:0 0 22px}
  .vhead{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px}
  .panel{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:28px;margin-bottom:22px}

  label.field{display:block;font-weight:700;font-size:14px;margin:0 0 8px}
  .hint{color:var(--muted);font-size:13px;font-weight:400}
  textarea#lessonText{width:100%;min-height:210px;padding:15px 17px;border:1px solid var(--line2);border-radius:12px;resize:vertical;font-size:15px;background:var(--soft)}
  textarea#lessonText:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);background:#fff}
  .counter{font-size:13px;color:var(--muted);text-align:right;margin-top:6px}
  .counter.over{color:var(--danger);font-weight:700}
  .num-input{display:flex;align-items:center;gap:10px}
  input.num{width:120px;padding:11px 14px;border:1px solid var(--line2);border-radius:11px;font-size:15px;background:var(--soft);text-align:center}
  input.num:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}

  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;padding:12px 22px;border-radius:11px;transition:.15s}
  .btn.primary{background:var(--seal);color:#fff}.btn.primary:hover{background:var(--seal-d)}
  .btn.primary:disabled{background:#9db4cc;cursor:not-allowed}
  .btn.ghost{background:#fff;border:1px solid var(--line2);color:var(--ink)}.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}
  .btn.soft{background:var(--brand-soft);color:var(--brand-d)}.btn.soft:hover{background:#DCE9F5}
  .btn.link{padding:6px 4px;color:var(--muted)}.btn.link:hover{color:var(--brand)}
  .btn.sm{padding:8px 14px;font-size:13.5px;border-radius:9px}
  .actions{display:flex;gap:12px;align-items:center;margin-top:24px;flex-wrap:wrap}

  /* 大纲 */
  .outline-item{display:flex;align-items:center;gap:14px;padding:12px 15px;border:1px solid var(--line);border-radius:11px;margin-bottom:8px;background:var(--soft)}
  .outline-item .pg{width:32px;height:32px;border-radius:8px;background:var(--brand-soft);color:var(--brand-d);font-weight:800;display:grid;place-items:center;font-size:13px;flex-shrink:0}
  .type-tag{font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;background:#EFEEE9;color:#6b6459;white-space:nowrap}
  .type-tag.cover{background:#E7F0ED;color:#1f6f5c}.type-tag.toc{background:#EAF0F6;color:#3A5B7A}
  .type-tag.transition{background:#F3E9DA;color:#8A6410}.type-tag.content{background:#EEF0F2;color:#5a6773}.type-tag.ending{background:#F3E7E9;color:#8a4a52}
  .type-tag.objective{background:#E7F0ED;color:#1f6f5c}.type-tag.lead{background:#EAF0F6;color:#3A5B7A}
  .type-tag.passage{background:#EDEBF6;color:#5647a0}.type-tag.words{background:#F1EEE6;color:#7a6a3a}
  .type-tag.figure{background:#FBEEDF;color:#9a6412}.type-tag.teach{background:#EEF0F2;color:#5a6773}
  .type-tag.ask{background:#E9F1F6;color:#2f6d8a}.type-tag.activity{background:#F3E9EE;color:#8a4a68}
  .type-tag.practice{background:#EEF1EA;color:#5a7040}.type-tag.summary{background:#EAEFF5;color:#3c5878}.type-tag.homework{background:#F3ECE3;color:#886540}
  .subj-chips{display:flex;flex-wrap:wrap;gap:9px}
  .subj-chip{padding:8px 16px;border-radius:999px;border:1.5px solid var(--line2);background:#fff;font-weight:700;font-size:14px;color:var(--muted);transition:.14s}
  .subj-chip:hover{border-color:var(--brand);color:var(--brand)}
  .subj-chip.on{background:var(--brand);border-color:var(--brand);color:#fff}
  .copy-card textarea.edit-in.body{width:100%;min-height:54px;resize:vertical;line-height:1.6;font-size:14.5px}
  .fig-hint{font-size:12.5px;color:var(--muted);font-weight:700;margin:8px 0 4px}
  .outline-item .summ{flex:1;font-size:14px}
  .feedback-box{margin-top:16px;padding:15px;border:1px dashed var(--line2);border-radius:11px;background:var(--soft)}
  .feedback-box input.text{width:100%;padding:10px 13px;border:1px solid var(--line2);border-radius:9px;background:#fff;margin-top:8px}
  .feedback-box input.text:focus{outline:none;border-color:var(--brand)}

  /* 核对文字 */
  .switch{display:inline-flex;align-items:center;gap:9px;cursor:pointer;user-select:none;flex-shrink:0}
  .switch input{display:none}
  .switch .track{width:42px;height:24px;border-radius:999px;background:var(--line2);position:relative;transition:.18s}
  .switch .track::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:.18s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
  .switch input:checked + .track{background:var(--brand)}
  .switch input:checked + .track::after{transform:translateX(18px)}
  .switch .stxt{font-size:13.5px;font-weight:700}
  .switch .sdesc{font-size:11.5px;color:var(--muted);font-weight:400;display:block;margin-top:-2px}
  .guide{display:flex;gap:11px;align-items:flex-start;padding:13px 16px;background:#FBF3E1;border:1px solid #EEDCA9;border-radius:11px;margin-bottom:16px;font-size:13.5px;color:#7a5a12}
  .guide svg{flex-shrink:0;margin-top:2px}
  .tpl-banner{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:12px;margin-bottom:18px}
  .tpl-banner.none{background:var(--brand-soft);border:1px solid #CFE0F0}
  .tpl-banner.chosen{background:var(--ok-soft);border:1px solid #BFE0CD}
  .tpl-banner .tb-left{flex:1}.tpl-banner .tb-left b{font-size:15px}.tpl-banner .tb-left span{display:block;font-size:12.5px;color:var(--muted)}
  .tb-thumb{width:104px;height:59px;border-radius:8px;overflow:hidden;flex-shrink:0;border:1px solid var(--line2);background:#fff}
  .tb-thumb img,.tb-thumb svg{width:100%;height:100%;object-fit:cover;display:block}
  .copy-card{border:1px solid var(--line);border-radius:13px;padding:15px 17px;margin-bottom:13px;background:#fff}
  .copy-card .cc-head{display:flex;align-items:center;gap:10px;margin-bottom:9px}
  .copy-card .cc-head .pg{width:28px;height:28px;border-radius:7px;background:var(--brand-soft);color:var(--brand-d);font-weight:800;display:grid;place-items:center;font-size:12.5px}
  .edit-in{width:100%;border:1px solid transparent;border-radius:8px;padding:7px 10px;background:var(--soft);transition:.12s}
  .edit-in:hover{border-color:var(--line2)}.edit-in:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px var(--brand-soft)}
  .edit-in.title{font-size:18px;font-weight:800}
  .bullets{display:flex;flex-direction:column;gap:6px;margin:6px 0}
  .bullet-row{display:flex;align-items:center;gap:8px}
  .bullet-row .dot{width:7px;height:7px;border-radius:50%;background:var(--gold);flex-shrink:0}
  .bullet-row .edit-in{flex:1}
  .bullet-row .del{color:var(--muted);width:26px;height:26px;border-radius:7px;display:grid;place-items:center;flex-shrink:0}
  .bullet-row .del:hover{background:var(--danger-soft);color:var(--danger)}
  .cc-foot{display:flex;align-items:center;gap:8px;margin-top:8px}.cc-foot .lbl{font-size:12px;color:var(--muted);font-weight:700}
  .add-bullet{font-size:13px;color:var(--brand);font-weight:700;margin-top:4px}

  /* 选择模板 */
  .tpl-group{margin-bottom:26px}
  .tg-head{font-size:15px;font-weight:800;margin:0 0 12px;display:flex;align-items:center;gap:9px}
  .tg-head::before{content:"";width:5px;height:16px;border-radius:3px;background:var(--gold)}
  .tpl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  .tplc{border:2px solid var(--line);border-radius:13px;overflow:hidden;cursor:pointer;background:#fff;transition:.15s;position:relative}
  .tplc:hover{border-color:var(--line2);transform:translateY(-2px);box-shadow:var(--shadow)}
  .tplc.sel{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
  .tplc-thumb{width:100%;aspect-ratio:16/9;display:block;overflow:hidden;background:#eef1f4;line-height:0}
  .tplc-thumb img,.tplc-thumb svg{width:100%;height:100%;object-fit:cover;display:block}
  .tplc-name{padding:9px 12px;font-size:13.5px;font-weight:700;display:flex;align-items:center;justify-content:space-between}
  .tplc-name .tick{color:var(--brand);font-weight:800}
  .tplc .zoom{position:absolute;top:8px;right:8px;width:28px;height:28px;border-radius:8px;background:rgba(14,36,56,.62);color:#fff;font-size:13px;display:grid;place-items:center;opacity:0;transition:.15s}
  .tplc:hover .zoom{opacity:1}.tplc .zoom:hover{background:var(--brand)}
  .tplc .del-tpl{position:absolute;top:8px;left:8px;width:26px;height:26px;border-radius:8px;background:rgba(14,36,56,.55);color:#fff;font-size:12px;display:none;place-items:center}
  .tplc:hover .del-tpl{display:grid}.tplc .del-tpl:hover{background:var(--danger)}
  .tplc .custom-flag{position:absolute;top:8px;right:44px;font-size:10.5px;font-weight:700;padding:2px 7px;border-radius:999px;background:rgba(224,169,59,.92);color:#3a2a08}
  .tplc.add{border:2px dashed var(--line2);display:grid;place-items:center;min-height:150px;color:var(--muted);background:var(--soft)}
  .tplc.add:hover{border-color:var(--brand);color:var(--brand);transform:none;box-shadow:none}
  .tplc.add .add-inner{text-align:center;font-weight:700;font-size:13.5px}.tplc.add .plus{font-size:32px;line-height:1;margin-bottom:4px;font-weight:400}

  /* 生成 */
  .prog-card{border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:15px 20px;display:flex;align-items:center;gap:18px;margin-bottom:20px;position:sticky;top:14px;background:#fff;z-index:5}
  .prog-track{flex:1;height:9px;background:var(--line2);border-radius:9px;overflow:hidden}
  .prog-fill{height:100%;width:0;background:var(--brand);border-radius:9px;transition:width .4s ease}
  .prog-text{font-size:14px;font-weight:700;white-space:nowrap}.prog-sub{font-size:12.5px;color:var(--muted)}
  .gen-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .gen-card{border:1px solid var(--line);border-radius:13px;overflow:hidden;background:#fff}
  .gen-card .canvas{aspect-ratio:16/9;background:#EEF1F4;position:relative;display:grid;place-items:center;overflow:hidden}
  .gen-card .canvas img{width:100%;height:100%;object-fit:cover;display:block}
  .gen-card.failed .canvas{background:var(--danger-soft)}
  .ph{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--muted);font-size:13px}
  .spinner{width:26px;height:26px;border:3px solid var(--line2);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}
  @keyframes spin{to{transform:rotate(360deg)}}
  .gc-bar{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;border-top:1px solid var(--line)}
  .gc-bar .pn{font-size:12.5px;color:var(--muted);font-weight:700}
  .gc-actions{display:flex;gap:6px}
  .chip{font-size:12.5px;font-weight:700;padding:6px 11px;border-radius:9px;border:1px solid var(--line2);background:#fff;color:var(--ink)}
  .chip:hover{border-color:var(--brand);color:var(--brand)}.chip.retry{border-color:var(--danger);color:var(--danger)}
  .status-pill{font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:999px}
  .status-pill.drawing{background:#FBF3E1;color:#8A6410}.status-pill.done{background:var(--ok-soft);color:var(--ok)}
  .status-pill.failed{background:var(--danger-soft);color:var(--danger)}.status-pill.wait{background:#EFEEE9;color:#6b6459}
  .demo-notice{background:#FBF3E1;border:1px solid #EEDCA9;color:#7a5a12;border-radius:11px;padding:11px 15px;font-size:13.5px;margin-bottom:14px;line-height:1.55}
  .gen-tpl-tag{display:flex;align-items:center;gap:11px;margin-bottom:14px;font-size:14px;color:var(--ink)}
  .gen-tpl-tag:empty{display:none}
  .gt-thumb{width:90px;height:51px;border-radius:8px;overflow:hidden;border:1px solid var(--line2);flex-shrink:0;background:#fff}
  .gt-thumb img,.gt-thumb svg{width:100%;height:100%;object-fit:cover;display:block}

  /* 交付 */
  .deliver-head{text-align:center;padding:6px 0 24px}.deliver-head .big{font-family:var(--font-kai);font-size:30px;font-weight:700;letter-spacing:1px;color:var(--ink)}
  .thumb-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  .tw-item{border:1px solid var(--line);border-radius:11px;overflow:hidden;background:#fff}
  .tw-item img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
  .tw-item .cap{font-size:12px;color:var(--muted);padding:7px 10px;font-weight:700}

  /* Modal / overlay */
  .overlay{position:fixed;inset:0;background:rgba(14,36,56,.5);z-index:50;display:none;place-items:center;padding:20px;backdrop-filter:blur(2px)}
  .overlay.show{display:grid}
  .modal{background:#fff;border-radius:18px;max-width:480px;width:100%;padding:24px;box-shadow:0 24px 70px rgba(0,0,0,.28);max-height:90vh;overflow:auto}
  .modal h3{margin:0 0 6px;font-size:19px}.modal p{margin:0 0 16px;color:var(--muted);font-size:14px}
  .modal textarea,.modal input[type=text],.modal input[type=password]{width:100%;padding:11px 14px;border:1px solid var(--line2);border-radius:10px;background:var(--soft);font-size:14.5px}
  .modal textarea{min-height:80px;resize:vertical}
  .modal textarea:focus,.modal input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
  .m-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}
  .key-block{border:1px solid var(--line);border-radius:12px;padding:13px 15px;margin-bottom:12px;background:var(--soft)}
  .key-title{font-weight:800;font-size:14px;margin-bottom:8px}
  .key-title span{font-weight:400;font-size:12px;color:var(--muted);margin-left:6px}
  .key-block .field.xs{font-size:12px;margin:8px 0 4px;color:var(--muted)}
  .key-block input{margin:0}
  .test-row{display:flex;align-items:center;gap:10px;margin-top:10px;flex-wrap:wrap}
  .test-result{font-size:12.5px;font-weight:700}
  .test-result.ok{color:var(--ok)}.test-result.bad{color:var(--danger)}
  .models-box{max-height:130px;overflow:auto;margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}
  .mchip{font-size:12px;padding:4px 9px;border-radius:8px;background:var(--soft);border:1px solid var(--line2);cursor:pointer;font-weight:600}
  .mchip:hover{border-color:var(--brand);color:var(--brand)}
  .fallback-note{background:#FBF3E1;border:1px solid #EEDCA9;color:#7a5a12;border-radius:10px;padding:10px 14px;font-size:13.5px;margin-bottom:12px;font-weight:600}
  /* 教材库 */
  .lib-modal{max-width:680px;width:100%;padding:0;display:flex;flex-direction:column;max-height:86vh}
  .lib-head{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
  .lib-head .hint{flex:1}
  .lib-head .dp-close{width:28px;height:28px;border-radius:8px;color:var(--muted);font-size:20px;line-height:1}
  .lib-head .dp-close:hover{background:var(--soft);color:var(--ink)}
  .lib-body{display:flex;flex-direction:column;min-height:0;overflow:hidden}
  .lib-nav{padding:12px 20px 8px;border-bottom:1px solid var(--line)}
  .lib-tab{font-size:13.5px;font-weight:700;padding:6px 12px;border-radius:9px;border:1px solid var(--line2);background:#fff;color:var(--ink);margin:0 6px 6px 0}
  .lib-tab:hover{border-color:var(--brand);color:var(--brand)} .lib-tab.on{background:var(--brand);color:#fff;border-color:var(--brand)}
  .lib-terms{margin-top:6px}
  .lib-term{font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px;background:var(--soft);border:1px solid var(--line2);margin-right:8px}
  .lib-term.on{background:var(--brand-soft);color:var(--brand-d);border-color:#CFE0F0}
  .lib-list{overflow:auto;padding:8px 20px 18px}
  .lib-unit{margin:14px 0 6px;font-size:13.5px;color:var(--ink);display:flex;align-items:baseline;gap:10px}
  .lib-unit span{font-size:12px;color:var(--muted);font-weight:400}
  .lib-lesson{display:flex;align-items:center;gap:10px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;margin-bottom:7px;cursor:pointer;background:#fff;transition:.12s}
  .lib-lesson:hover{border-color:var(--brand);background:var(--brand-soft)}
  .lib-lesson .ll-t{font-weight:700;font-size:14.5px}
  .lib-lesson .ll-a{font-size:12.5px;color:var(--muted)}
  .lib-lesson .ll-tag{font-size:11.5px;font-weight:700;padding:2px 8px;border-radius:999px;background:#EFEEE9;color:#6b6459;margin-left:auto}
  .lib-lesson .ll-flag{font-size:11.5px;font-weight:700;padding:2px 8px;border-radius:999px;background:#EFEEE9;color:#8a7a5a;flex-shrink:0}
  .lib-lesson.ready .ll-flag{background:var(--ok-soft);color:var(--ok)}
  .debug-panel{position:fixed;right:16px;bottom:16px;width:min(560px,90vw);max-height:56vh;background:#0E2438;color:#dbe6f0;border-radius:12px;box-shadow:0 16px 50px rgba(0,0,0,.4);z-index:80;display:flex;flex-direction:column;overflow:hidden}
  .debug-panel .dp-head{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid #22415e;font-size:13.5px}
  .debug-panel .dp-head .hint{color:#7f97ad}
  .debug-panel .dp-close{margin-left:auto;width:26px;height:26px;border-radius:7px;color:#9fb3c6;font-size:18px;line-height:1}
  .debug-panel .dp-close:hover{background:#17324c;color:#fff}
  .debug-panel pre{margin:0;padding:12px 14px;overflow:auto;font-size:12px;line-height:1.5;white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,Consolas,monospace}
  .ref-drop{margin-top:8px;border:1.5px dashed var(--line2);border-radius:11px;padding:16px;text-align:center;color:var(--muted);font-size:13px;cursor:pointer;background:var(--soft)}
  .ref-drop:hover{border-color:var(--brand);color:var(--brand)}.ref-drop.has{padding:8px}
  .ref-drop img{max-width:100%;max-height:150px;border-radius:8px;display:block;margin:0 auto}
  .ref-drop .clear{margin-top:8px;font-size:12.5px;color:var(--danger);font-weight:700;display:inline-block}
  .pv-thumb{width:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#eef1f4;margin-bottom:14px;border:1px solid var(--line2);line-height:0}
  .pv-thumb img,.pv-thumb svg{width:100%;height:100%;object-fit:cover;display:block}
  .pv-prompt{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:13px;color:#4a5763;margin:10px 0 16px;white-space:pre-wrap}

  .busy{position:fixed;inset:0;background:rgba(255,255,255,.82);z-index:60;display:none;flex-direction:column;align-items:center;justify-content:center;gap:18px;backdrop-filter:blur(3px)}
  .busy.show{display:flex}.busy .spinner{width:44px;height:44px;border-width:4px}.busy .msg{font-size:16px;font-weight:700}
  .toast{position:fixed;bottom:26px;left:calc(50% + 125px);transform:translateX(-50%) translateY(20px);background:var(--navy);color:#fff;padding:12px 20px;border-radius:11px;font-size:14px;font-weight:600;z-index:70;opacity:0;pointer-events:none;transition:.28s;box-shadow:0 10px 30px rgba(0,0,0,.25)}
  .toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
  .restore-banner{background:var(--brand-soft);border:1px solid #CFE0F0;border-radius:11px;padding:12px 16px;margin:0 0 18px;display:none;align-items:center;gap:14px;font-size:14px}
  .restore-banner.show{display:flex}

  @media(max-width:860px){
    .layout{flex-direction:column}.sidebar{width:100%;height:auto;position:static;flex-direction:row;flex-wrap:wrap;align-items:center;padding:12px}
    .brand{padding:6px 10px 6px}.nav{flex-direction:row;flex-wrap:wrap;margin:0}.navi .sub{display:none}.side-sp{display:none}.side-tools{border:none;margin:0}
    .container{padding:24px 18px 80px}.tpl-grid,.gen-grid,.thumb-wall{grid-template-columns:1fr 1fr}.toast{left:50%}
  }