/* =========================================================
   论文选题工作台 · 可编辑风（Notion Style）
   文档工具调性：浅米色底、细边框、小块级 hover、零位移动画
   ========================================================= */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f7f6f3; --panel:#ffffff; --panel-2:#f7f6f3; --panel-3:#efedea; --panel-4:#e3e1db;
  --line:rgba(55,53,47,.09); --line-2:rgba(55,53,47,.16);
  --tx:#37352f; --tx-2:#5f5e5a; --tx-3:#9b9a97;
  --ac:#2eaadc; --ac-2:#6940a5; --ac-dim:#e8f6fb; --ac-line:rgba(46,170,220,.28);
  --human:#2eaadc; --ai:#6940a5;
  --ok:#0f7b6c; --warn:#dfab01; --err:#eb5757;
  --r:8px; --r2:6px;
}
html,body{height:100%}
body{
  font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Helvetica,Arial,sans-serif;
  background:var(--bg); color:var(--tx); font-size:14px; line-height:1.6;
  -webkit-font-smoothing:antialiased; overflow:hidden;
}
button,input,select,textarea{font:inherit;color:inherit;outline:none}
button{cursor:pointer;background:none;border:none}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#d8d5cf;border-radius:8px;border:2px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-thumb:hover{background:#c4c0b8;background-clip:padding-box;border:2px solid transparent}
code{font-family:SFMono-Regular,Menlo,Consolas,"PT Mono","Liberation Mono",monospace;font-size:.87em;
  background:rgba(135,131,120,.16);color:#a8443f;padding:1px 5px;border-radius:3px}

/* ============ 顶栏 ============ */
.topbar{
  height:56px;display:flex;align-items:center;justify-content:space-between;
  padding:0 18px;border-bottom:1px solid var(--line);background:var(--panel);
  position:relative;z-index:20;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:28px;height:28px;border-radius:5px;display:grid;place-items:center;
  background:var(--tx);color:#fff;font-weight:600;font-size:14px;flex-shrink:0;
}
.brand-text h1{font-size:14px;font-weight:600;line-height:1.3;letter-spacing:0;white-space:nowrap}
.brand-text span{font-size:11px;color:var(--tx-3);letter-spacing:.2px}
.topbar-right{display:flex;align-items:center;gap:6px;flex-shrink:0}
.save-state{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--tx-3);margin-right:8px}
.save-state i{width:6px;height:6px;border-radius:50%;background:var(--ok);transition:.2s}
.save-state.busy i{background:var(--warn)}
.save-state em{font-style:normal}

/* ============ 按钮 ============ */
.btn{
  height:32px;padding:0 12px;border-radius:var(--r2);font-size:13px;font-weight:500;
  display:inline-flex;align-items:center;gap:6px;transition:background-color .15s,border-color .15s,color .15s;
  white-space:nowrap;border:1px solid transparent;
}
.btn.primary{background:var(--tx);color:#fff}
.btn.primary:hover{background:#2a2823}
.btn.primary:active{background:#1f1d19}
.btn.ghost{border-color:var(--line-2);color:var(--tx-2);background:transparent}
.btn.ghost:hover{background:var(--panel-3);color:var(--tx);border-color:rgba(55,53,47,.2)}
.btn.soft{background:var(--ac-dim);color:#1f8cad;border-color:var(--ac-line)}
.btn.soft:hover{background:#dcf1fa}
.btn.danger{color:var(--err);border-color:rgba(235,87,87,.3);background:transparent}
.btn.danger:hover{background:#fdf0f0}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.sm{height:26px;padding:0 9px;font-size:12px;border-radius:5px}
.icon-btn{width:26px;height:26px;border-radius:5px;display:grid;place-items:center;
  color:var(--tx-3);font-size:15px;transition:background-color .15s,color .15s;line-height:1}
.icon-btn:hover{background:var(--panel-3);color:var(--tx)}

/* ============ 进度条 ============ */
.progress{height:2px;background:#ebe9e5;position:relative;z-index:19}
.progress i{display:block;height:100%;width:0;background:var(--tx);transition:width .35s ease}

/* ============ 布局 ============ */
.layout{height:calc(100dvh - 58px);display:grid;grid-template-columns:230px minmax(0,1fr)}
.sidebar{
  border-right:1px solid var(--line);padding:14px 10px;display:flex;flex-direction:column;
  background:var(--bg);overflow-y:auto;
}
.step-nav{display:flex;flex-direction:column;gap:1px;flex:1}
.nav-item{
  display:flex;gap:10px;padding:7px 9px;border-radius:5px;text-align:left;
  transition:background-color .15s;width:100%;
}
.nav-item:hover{background:var(--panel-3)}
.nav-item.active{background:var(--panel-4)}
.nav-num{
  font-family:SFMono-Regular,Menlo,Consolas,monospace;font-size:10.5px;font-weight:600;color:var(--tx-3);
  padding-top:2px;letter-spacing:.3px;flex-shrink:0;width:16px;
}
.nav-item.active .nav-num{color:var(--tx-2)}
.nav-item.done .nav-num{color:var(--ok)}
.nav-txt{display:flex;flex-direction:column;min-width:0}
.nav-title{font-size:13px;font-weight:500;color:var(--tx-2);line-height:1.4}
.nav-item.active .nav-title{color:var(--tx);font-weight:600}
.nav-item.done .nav-title{color:var(--tx-2)}
.nav-sub{font-size:10.5px;color:var(--tx-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1.5}
.side-foot{padding:11px 9px 2px;border-top:1px solid var(--line);margin-top:8px}
.side-foot p{font-size:10.5px;color:var(--tx-3);line-height:1.65}

.content{overflow-y:auto;padding:28px 32px 88px;background:var(--panel)}
.step-page{max-width:1060px;margin:0 auto;animation:fade .2s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}

/* ============ 步骤头 ============ */
.step-head{margin-bottom:20px}
.step-kicker{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.step-no{
  font-family:SFMono-Regular,Menlo,Consolas,monospace;font-size:10px;font-weight:600;letter-spacing:1px;
  color:var(--tx-3);background:var(--panel-3);padding:2px 7px;border-radius:4px;
}
.step-kicker h2{font-size:20px;font-weight:650;letter-spacing:-.2px}
.step-goal{font-size:12.5px;color:var(--tx-3)}
.step-desc{font-size:13px;color:var(--tx-2);max-width:740px;line-height:1.7}

/* ============ 卡片 ============ */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  margin-bottom:14px;overflow:hidden;
}
.card-head{
  display:flex;align-items:center;gap:8px;padding:10px 15px;
  border-bottom:1px solid var(--line);
}
.card-head h3{font-size:12.5px;font-weight:600;color:var(--tx)}
.card-head .hint{font-size:11.5px;color:var(--tx-3);margin-left:auto;text-align:right}
.dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}
.dot.human{background:var(--human)}
.dot.ai{background:var(--ai)}
.card-body{padding:15px}

/* 两栏：主表单 + 侧栏提醒 */
.split{display:grid;grid-template-columns:minmax(0,1fr) 306px;gap:14px;align-items:start}
.sticky{position:sticky;top:0}

/* ============ 表单 ============ */
.field{margin-bottom:13px}
.field:last-child{margin-bottom:0}
.field label{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--tx-2);
  font-weight:500;margin-bottom:5px}
.field label .req{color:var(--err);font-size:10px}
.help{font-size:11.5px;color:var(--tx-3);margin-top:5px;line-height:1.6}
input[type=text],input[type=password],input[type=url],input:not([type]),select,textarea{
  width:100%;background:var(--panel);border:1px solid var(--line-2);border-radius:var(--r2);
  padding:7px 10px;font-size:13px;color:var(--tx);transition:border-color .15s,box-shadow .15s;
}
input::placeholder,textarea::placeholder{color:#b3b0a9}
input:hover,textarea:hover,select:hover{border-color:rgba(55,53,47,.24)}
input:focus,select:focus,textarea:focus{
  border-color:var(--ac);box-shadow:0 0 0 3px rgba(46,170,220,.14);
}
textarea{resize:vertical;min-height:72px;line-height:1.65}
select{appearance:none;cursor:pointer;background-color:var(--panel);
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg width='10' height='6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%239b9a97'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center;padding-right:26px}
input[type=range]{-webkit-appearance:none;height:4px;background:#e3e1db;border-radius:4px;padding:0;border:none}
input[type=range]:hover{background:#dbd8d1;border:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:13px;height:13px;border-radius:50%;
  background:var(--tx);cursor:pointer;border:2px solid #fff;box-shadow:0 0 0 1px rgba(55,53,47,.2)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:11px}
@media(max-width:820px){.grid-2,.grid-3{grid-template-columns:1fr}}
.check-line{display:flex;align-items:flex-start;gap:8px;font-size:12.5px;color:var(--tx-2);
  cursor:pointer;padding:6px 0;user-select:none;line-height:1.6}
.check-line input{width:15px;height:15px;accent-color:var(--tx);cursor:pointer;flex-shrink:0;margin-top:2px}
.tag-num{font-family:SFMono-Regular,Menlo,Consolas,monospace;color:var(--tx-2);background:var(--panel-3);
  padding:1px 5px;border-radius:3px;font-size:11px}

/* 方向输入行 */
.dir-row{display:grid;grid-template-columns:22px minmax(0,1fr) 104px 26px;gap:8px;
  align-items:center;margin-bottom:7px}
.dir-idx{font-family:SFMono-Regular,Menlo,Consolas,monospace;font-size:11px;color:var(--tx-3);text-align:center}
.dir-extra{grid-column:2/-1;display:block;margin-bottom:1px}
.mini-input{font-size:12px!important;padding:5px 8px!important}
.dir-extra{color:var(--tx-2)}
.dir-extra::placeholder{color:#b3b0a9;font-size:11.5px}

/* 四类信息 */
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(max-width:820px){.info-grid{grid-template-columns:1fr}}
.info-box{border:1px solid var(--line);border-radius:var(--r2);padding:10px 11px;background:#fbfaf8}
.info-box h4{font-size:12.5px;font-weight:600;display:flex;align-items:center;gap:6px;margin-bottom:1px}
.info-box .chan{font-size:11px;color:var(--tx-3);margin-bottom:7px;line-height:1.55}
.info-box textarea{min-height:54px;font-size:12.5px;background:#fff}

/* 线索行 */
.clue-wrap{display:flex;flex-direction:column;gap:6px}
.clue-row{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1.1fr) minmax(0,1.3fr) 94px 26px;
  gap:6px;align-items:center}
@media(max-width:900px){.clue-row{grid-template-columns:1fr 1fr}
  .clue-row .del{margin-left:auto}}

/* 关键词 */
.kw-box{display:flex;flex-wrap:wrap;gap:6px;padding:8px;min-height:42px;
  background:#fbfaf8;border:1px solid var(--line);border-radius:var(--r2);margin-bottom:8px}
.kw{display:inline-flex;align-items:center;gap:5px;background:var(--panel-3);
  border:1px solid var(--line);color:var(--tx-2);font-size:12px;padding:2px 7px;border-radius:4px}
.kw button{color:var(--tx-3);font-size:13px;line-height:1;padding:0}
.kw button:hover{color:var(--err)}
.kw-empty{font-size:12px;color:#b3b0a9;padding:1px}

/* ============ AI 协作区 ============ */
.ai-card{border-color:var(--line)}
.ai-actions{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-bottom:11px}
.ai-meta{font-size:11px;color:var(--tx-3);margin-left:auto}
.ai-out{
  border:none;border-radius:var(--r2);background:var(--bg);
  padding:14px 16px;min-height:90px;overflow-x:auto;
}
.ai-empty{font-size:12.5px;color:var(--tx-3);line-height:1.8;padding:4px 0}
.ai-empty b{color:var(--tx-2);font-weight:600}
.cursor{display:inline-block;width:2px;height:14px;background:var(--ai);vertical-align:-2px;
  margin-left:1px;animation:blink .9s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.paste-wrap{margin-top:10px}

/* Markdown 渲染 */
.md{font-size:13px;line-height:1.75;color:var(--tx)}
.md h2,.md h3,.md h4,.md h5{margin:16px 0 8px;font-weight:650;color:var(--tx);letter-spacing:-.1px}
.md h2{font-size:16px;padding-bottom:6px;border-bottom:1px solid var(--line-2)}
.md h3{font-size:14.5px}
.md h4{font-size:13.5px}.md h5{font-size:13px;color:var(--tx-2)}
.md h2:first-child,.md h3:first-child{margin-top:0}
.md p{margin:7px 0}
.md ul,.md ol{margin:7px 0 7px 20px}
.md li{margin:3px 0}
.md strong{color:#1f1d19;font-weight:650}
.md table{border-collapse:collapse;width:100%;margin:10px 0;font-size:12px;min-width:500px;
  background:#fff;border:1px solid var(--line)}
.md th,.md td{border:1px solid var(--line);padding:6px 9px;text-align:left;vertical-align:top}
.md th{background:var(--panel-3);color:var(--tx-2);font-weight:600;white-space:nowrap}
.md blockquote{border-left:2px solid var(--tx-3);padding-left:11px;color:var(--tx-2);margin:9px 0}
.md a{color:#1f8cad;text-decoration:underline;text-decoration-color:rgba(46,170,220,.4);
  text-underline-offset:2px}
.md a:hover{text-decoration-color:var(--ac)}
.md hr{border:none;border-top:1px solid var(--line-2);margin:13px 0}
.md pre{background:#f2f0ec;border:1px solid var(--line);border-radius:6px;padding:10px 12px;
  overflow-x:auto;margin:9px 0}
.md pre code{background:none;color:var(--tx);padding:0;font-size:12px;line-height:1.65;white-space:pre}
.md table+h2,.md table+h3{margin-top:18px}

/* ============ 三问卡 ============ */
.q-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.q-head{padding:10px 14px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:7px}
.q-head h3{font-size:12px;font-weight:600;line-height:1.4;color:var(--tx)}
.q-body{padding:2px 0}
.q-item{padding:10px 14px;border-bottom:1px solid var(--line);cursor:pointer;transition:background-color .15s}
.q-item:last-child{border-bottom:none}
.q-item:hover{background:var(--bg)}
.q-q{display:flex;align-items:flex-start;gap:7px;font-size:12.5px;font-weight:550;color:var(--tx);line-height:1.5}
.q-q i{font-style:normal;font-family:SFMono-Regular,Menlo,Consolas,monospace;color:var(--tx-3);font-size:11px;flex-shrink:0}
.q-q::after{content:'';flex-shrink:0;margin-left:auto;margin-top:7px;
  width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:4.5px solid var(--tx-3);transition:transform .2s,border-color .2s}
.q-item.open .q-q::after{transform:rotate(180deg);border-top-color:var(--tx-2)}
.q-a{display:none;margin-top:8px;padding-left:17px}
.q-item.open .q-a{display:block}
.q-branch{display:block;margin-bottom:7px}
.q-branch em{display:block;font-style:normal;color:var(--tx-3);font-size:10.5px;line-height:1.5;margin-bottom:1px}
.q-branch b{display:block;color:var(--tx-2);font-weight:500;font-size:11.5px;line-height:1.55}

/* ============ 侧栏提示 ============ */
.note-card{border:1px solid var(--line);border-radius:var(--r);background:#fbfaf8;
  padding:12px 13px;margin-bottom:12px}
.note-card h4{font-size:11.5px;font-weight:600;color:var(--tx-2);margin-bottom:7px;
  display:flex;align-items:center;gap:6px}
.note-card p{font-size:11.5px;color:var(--tx-2);line-height:1.7}
.note-card p+p{margin-top:6px}
.note-card b{color:var(--tx);font-weight:600}

/* 渠道链接 */
.chan-list{display:flex;flex-direction:column;gap:1px}
.chan-link{display:flex;align-items:center;gap:8px;padding:5px 8px;border-radius:5px;
  font-size:12px;color:var(--tx-2);transition:background-color .15s;text-decoration:none}
.chan-link:hover{background:var(--panel-3);color:var(--tx)}
.chan-link small{margin-left:auto;font-size:10.5px;color:var(--tx-3)}
.chan-chip{display:inline-flex;align-items:center;gap:5px;padding:4px 9px;border-radius:5px;
  font-size:11.5px;color:var(--tx-2);background:#fbfaf8;border:1px solid var(--line);
  text-decoration:none;transition:background-color .15s,border-color .15s}
.chan-chip:hover{background:var(--panel-3);border-color:var(--line-2);color:var(--tx)}

/* ============ 渠道分工带 ============ */
.hint-band{border:1px solid var(--line);border-radius:var(--r);margin-bottom:14px;background:#fbfaf8;overflow:hidden}
.hint-band-head{display:flex;align-items:center;gap:8px;padding:9px 15px;border-bottom:1px solid var(--line)}
.hint-band-head h4{font-size:11.5px;font-weight:600;color:var(--tx-2)}
.hint-band-head span{font-size:11px;color:var(--tx-3);margin-left:auto}
.hint-grid{display:grid;grid-template-columns:repeat(4,1fr);background:var(--panel)}
.hint-item{padding:11px 14px;border-right:1px solid var(--line)}
.hint-item:last-child{border-right:none}
.hint-item b{display:block;font-size:12px;color:var(--tx);font-weight:600;margin-bottom:2px}
.hint-item span{display:block;font-size:11px;color:var(--tx-2);line-height:1.5;margin-bottom:4px}
.hint-item em{display:block;font-style:normal;font-size:10.5px;color:var(--tx-3);line-height:1.55}
@media(max-width:1020px){.hint-grid{grid-template-columns:1fr 1fr}
  .hint-item:nth-child(2){border-right:none}
  .hint-item:nth-child(1),.hint-item:nth-child(2){border-bottom:1px solid var(--line)}}
@media(max-width:560px){.hint-grid{grid-template-columns:1fr}
  .hint-item{border-right:none;border-bottom:1px solid var(--line)}
  .hint-item:last-child{border-bottom:none}}

/* ============ 页脚导航 ============ */
.page-foot{display:flex;align-items:center;gap:9px;margin-top:22px;padding-top:16px;
  border-top:1px solid var(--line)}
.page-foot .spacer{flex:1}

/* ============ 模态 ============ */
.mask{position:fixed;inset:0;background:rgba(20,18,15,.42);
  opacity:0;pointer-events:none;transition:opacity .18s;z-index:50}
.mask.on{opacity:1;pointer-events:auto}
.modal{
  position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(540px,calc(100vw - 32px));max-height:calc(100dvh - 64px);
  background:var(--panel);border:1px solid var(--line-2);border-radius:8px;
  box-shadow:0 18px 48px rgba(20,18,15,.2);z-index:51;
  opacity:0;pointer-events:none;transition:opacity .18s ease;
  display:flex;flex-direction:column;overflow:hidden;
}
.modal.wide{width:min(660px,calc(100vw - 32px))}
.modal.on{opacity:1;pointer-events:auto}
.modal-head{display:flex;align-items:center;justify-content:space-between;
  padding:14px 17px;border-bottom:1px solid var(--line);flex-shrink:0}
.modal-head h3{font-size:14px;font-weight:600}
.modal-body{padding:17px;overflow-y:auto}
.modal-foot{display:flex;align-items:center;gap:8px;padding:13px 17px;
  border-top:1px solid var(--line);flex-shrink:0;background:#fbfaf8}
.modal-foot .spacer{flex:1}
.foot-note{font-size:11px;color:var(--tx-3);line-height:1.5;max-width:330px}

/* 预设 */
.env-hint{font-size:11.5px;line-height:1.65;padding:8px 11px;border-radius:5px;
  background:#f2f0ec;color:var(--tx-2);margin-bottom:13px;border:1px solid var(--line)}
.env-hint.ok{background:#eaf6f3;border-color:rgba(15,123,108,.2);color:#0b5d52}
.env-hint b{font-weight:600}
.preset-row{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:15px}
.preset{padding:4px 10px;border-radius:5px;font-size:11.5px;color:var(--tx-2);
  border:1px solid var(--line-2);transition:background-color .15s,border-color .15s;background:transparent}
.preset:hover{background:var(--panel-3);border-color:rgba(55,53,47,.24)}
.preset.on{background:var(--panel-3);border-color:rgba(55,53,47,.3);color:var(--tx);font-weight:600}
.test-result{font-size:12px;line-height:1.6;margin-top:11px;padding:9px 11px;border-radius:5px;display:none}
.test-result.on{display:block}
.test-result.ok{background:#eaf6f3;border:1px solid rgba(15,123,108,.22);color:#0b5d52}
.test-result.err{background:#fdf0f0;border:1px solid rgba(235,87,87,.24);color:#a83a3a}

/* 数据面板 */
.data-grid{display:flex;flex-direction:column;gap:7px}
.data-item{display:flex;flex-direction:column;gap:2px;padding:10px 12px;border-radius:6px;
  border:1px solid var(--line);background:#fbfaf8;text-align:left;transition:background-color .15s,border-color .15s}
.data-item:hover{background:var(--panel-3);border-color:rgba(55,53,47,.2)}
.data-item b{font-size:13px;font-weight:550;color:var(--tx)}
.data-item span{font-size:11.5px;color:var(--tx-3)}
.data-item.danger b{color:var(--err)}
.data-item.danger:hover{background:#fdf0f0;border-color:rgba(235,87,87,.24)}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,0);
  background:var(--tx);color:#fff;
  padding:8px 15px;border-radius:5px;font-size:12.5px;z-index:99;
  opacity:0;pointer-events:none;transition:opacity .18s;
  box-shadow:0 4px 14px rgba(15,15,15,.16);
}
.toast.on{opacity:1}
.toast.err{background:#8f2f2f}

/* 步骤内小节标题 */
.sec-title{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:600;
  color:var(--tx-3);letter-spacing:.4px;margin:16px 0 9px}
.sec-title::after{content:'';flex:1;height:1px;background:var(--line)}
.sec-title:first-child{margin-top:0}

.badge-ok{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--ok);
  background:#eaf6f3;border:1px solid rgba(15,123,108,.2);padding:2px 8px;border-radius:4px}

/* 错误提示块 */
.ai-err{font-size:12.5px;line-height:1.75;color:#a83a3a;background:#fdf7f7;
  border:1px solid rgba(235,87,87,.2);border-radius:6px;padding:11px 13px}
.ai-err b{color:#8f2f2f}

/* 三问全屏弹层 */
.tq-card{border:1px solid var(--line);border-radius:6px;padding:13px 15px;background:#fbfaf8}
.tq-card+.tq-card{margin-top:12px}
.tq-title{font-size:13px;font-weight:600;margin-bottom:9px;display:flex;gap:8px;align-items:baseline}
.tq-title span:first-child{font-family:SFMono-Regular,Menlo,Consolas,monospace;color:var(--tx-3);font-size:12px}
.tq-row{display:flex;gap:10px;font-size:12.5px;color:var(--tx-2);margin-bottom:6px;line-height:1.6}
.tq-row em{font-style:normal;color:var(--tx-3);min-width:92px;flex-shrink:0}
.tq-row span{color:var(--tx)}

/* ============ 响应式 ============ */
@media(max-width:1020px){
  .layout{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr)}
  .sidebar{border-right:none;border-bottom:1px solid var(--line);padding:8px 10px;
    overflow-x:auto;overflow-y:hidden;scrollbar-width:none}
  .sidebar::-webkit-scrollbar{display:none}
  .step-nav{flex-direction:row;gap:4px}
  .nav-item{flex-shrink:0;padding:6px 10px;white-space:nowrap;width:auto}
  .nav-item.active{background:var(--panel-4)}
  .nav-sub{display:none}
  .nav-num{width:auto;padding-top:0}
  .side-foot{display:none}
  .split{grid-template-columns:1fr}
  .sticky{position:static}
  .content{padding:18px 15px 76px}
}
@media(max-width:640px){
  .topbar{padding:0 12px;gap:8px}
  .brand{gap:8px}
  .brand-mark{width:26px;height:26px;font-size:13px}
  .brand-text h1{font-size:13px}
  .brand-text span{display:none}
  .save-state{display:none}
  .topbar-right{gap:5px}
  .topbar-right .btn{height:30px;padding:0 9px;font-size:12px}
  .topbar-right .btn[data-act="openThreeQ"]{display:none}
  .step-kicker h2{font-size:18px}
  .step-goal{display:none}
  .dir-row{grid-template-columns:20px minmax(0,1fr) 86px 24px;gap:6px}
  .card-body{padding:12px}
  .ai-out{padding:12px}
  .hint-band-head span{display:none}
}