*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f0f2f5;
  --surface:#fff;
  --card:#fff;
  --border:#d9dde3;
  --text:#1f2937;
  --text2:#6b7280;
  --text3:#9ca3af;
  --accent:#4f46e5;
  --accent2:#7c3aed;
  --al:rgba(79,70,229,.07);
  --radius:10px;
  --font:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
}
html{font-size:15px}
body{font-family:var(--font);background:var(--bg);color:var(--text);overflow-x:hidden;min-height:100vh}

/* ============ Sidebar ============ */
.sidebar{
  width:200px;height:100vh;position:fixed;top:0;left:0;z-index:50;
  background:linear-gradient(180deg,#1e1b4b,#0f0d2e);color:#fff;
  display:flex;flex-direction:column;transition:transform .25s ease;
}
.sb-h{padding:16px 14px 10px;border-bottom:1px solid rgba(255,255,255,.06)}
.sb-h h1{font-size:1rem;font-weight:800;letter-spacing:-.5px}
.sb-h h1 span{color:#818cf8}
.sb-h p{font-size:.6rem;color:rgba(255,255,255,.3);margin-top:1px}
.sb-m{flex:1;overflow-y:auto;padding:6px 6px 10px}
.sb-i{display:flex;align-items:center;gap:8px;padding:7px 10px;cursor:pointer;color:rgba(255,255,255,.45);font-size:.73rem;border-radius:6px;transition:background .12s,color .12s;margin:1px 0;user-select:none}
.sb-i:hover{color:#fff;background:rgba(255,255,255,.05)}
.sb-i.on{color:#fff;background:rgba(79,70,229,.2);font-weight:600}
.sb-i .ic{font-size:.85rem;width:18px;text-align:center;flex-shrink:0}
.sb-hr{height:1px;background:rgba(255,255,255,.05);margin:4px 8px}
.sb-b{padding:8px 12px;border-top:1px solid rgba(255,255,255,.05);display:flex;flex-direction:column;gap:2px;font-size:.75rem}
.sb-guest{display:flex;gap:2px;align-items:center}
.sb-guest span{cursor:pointer;color:rgba(255,255,255,.4);transition:color .12s;font-size:.72rem}
.sb-guest span:hover{color:#fff}
.sb-user{display:none;flex-direction:column}
.sb-username{color:rgba(255,255,255,.8);font-size:.72rem}
.sb-quota{color:#818cf8;font-size:.62rem;margin:1px 0}
.sb-user a{cursor:pointer;color:rgba(255,255,255,.3);font-size:.65rem;transition:color .12s;background:none;border:none;text-align:left;display:inline;padding:0}
.sb-user a:hover{color:#f87171}

/* ============ Main ============ */
.main{margin-left:200px;min-height:100vh}
.tb{display:none;align-items:center;justify-content:space-between;padding:8px 14px;background:var(--surface);border-bottom:1px solid var(--border)}
.tb h1{font-size:.9rem;font-weight:700}
.tb h1 span{color:var(--accent)}
.tb button{background:none;border:none;font-size:1.2rem;cursor:pointer;color:var(--text);padding:4px;line-height:1}
.ct{padding:20px;max-width:1100px;margin:0 auto}

/* ============ Pages ============ */
.pg{display:none}
.pg.on{display:block;animation:pgIn .2s ease}
@keyframes pgIn{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}

/* ============ Page Header ============ */
.ph{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.ph .pi{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.9rem;background:var(--al);flex-shrink:0}
.ph h1{font-size:1rem;font-weight:700;line-height:1.2}
.ph p{font-size:.7rem;color:var(--text2);margin-top:1px}

/* ============ Card ============ */
.cb{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px}
.cb h3{font-size:.82rem;font-weight:700;margin-bottom:3px}
.cd{font-size:.7rem;color:var(--text2);margin-bottom:10px}

/* ============ Form Elements ============ */
label{display:block;font-size:.68rem;font-weight:500;color:var(--text2);margin:8px 0 3px}
textarea,.in{
  width:100%;padding:6px 10px;background:var(--bg);border:1px solid var(--border);
  border-radius:6px;color:var(--text);font-size:.78rem;outline:none;transition:border-color .12s,box-shadow .12s;font-family:var(--font)
}
textarea:focus,.in:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(79,70,229,.1)}
textarea{min-height:50px;line-height:1.5;resize:vertical;font-size:.76rem;font-family:var(--font)}
.in{-webkit-appearance:none;-moz-appearance:textfield}
select.in{appearance:auto;cursor:pointer;padding:5px 8px;max-width:200px}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;gap:4px;padding:5px 12px;border:none;border-radius:6px;cursor:pointer;font-size:.72rem;font-weight:500;transition:opacity .12s,background .12s;line-height:1.4}
.btn-p{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff}
.btn-p:hover{opacity:.88}
.btn-block{display:flex;width:100%;justify-content:center}
.btn-s{border:1px solid var(--border);color:var(--text2);background:transparent}
.btn-s:hover{background:var(--bg)}
.btns{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
.bg{margin-top:10px}

/* ============ Loading ============ */
.ld{display:none;text-align:center;padding:6px;color:var(--text3);font-size:.7rem}
.ld .i{display:inline-block;width:8px;height:8px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:sp .4s linear infinite;vertical-align:middle;margin-right:4px}
@keyframes sp{to{transform:rotate(360deg)}}

/* ============ Output ============ */
.out{display:none;background:var(--bg);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:5px;padding:8px;font-size:.75rem;line-height:1.5;white-space:pre-wrap;margin-top:5px;max-height:320px;overflow:auto;font-family:'Georgia','Noto Serif SC','Source Han Serif SC',serif;color:var(--text)}
.out.on{display:block}
.out.oe{border-left-color:#ef4444}

/* ============ Write Tabs ============ */
.wt{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:10px}
.wtb{padding:3px 11px;border:1px solid var(--border);border-radius:14px;font-size:.7rem;cursor:pointer;color:var(--text2);font-weight:500;background:var(--bg);transition:border-color .1s,color .1s,background .1s;font-family:var(--font)}
.wtb:hover{border-color:var(--accent);color:var(--accent)}
.wtb.on{background:var(--al);border-color:var(--accent);color:var(--accent);font-weight:600}

/* ============ Quick Tool Link ============ */
.qt{display:inline-flex;align-items:center;gap:3px;padding:4px 10px;border:1px solid var(--border);border-radius:5px;cursor:pointer;font-size:.68rem;color:var(--text2);background:var(--bg);margin:2px;transition:border-color .1s,color .1s,background .1s}
.qt:hover{border-color:var(--accent);color:var(--accent);background:var(--al)}

/* ============ Tool Grid ============ */
.tg{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:7px}
.tc{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:10px;cursor:pointer;text-align:center;transition:border-color .12s,transform .12s}
.tc:hover{border-color:var(--accent);transform:translateY(-1px)}
.tc .ci{width:26px;height:26px;margin:0 auto 3px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:.9rem}
.tc h4{font-size:.72rem;font-weight:600;margin:0 0 1px}
.tc p{font-size:.58rem;color:var(--text3)}
.tc.nw{position:relative}
.tc.nw::after{content:'NEW';position:absolute;top:3px;right:3px;background:linear-gradient(135deg,#ef4444,#f97316);color:#fff;font-size:.42rem;font-weight:700;padding:1px 4px;border-radius:2px;line-height:1.2}

/* ============ Prompt Grid ============ */
.pr{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:7px}
.pc{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:10px;cursor:pointer;transition:border-color .1s}
.pc:hover{border-color:var(--accent)}
.pc h4{font-size:.72rem;font-weight:600;margin-bottom:1px}
.pc .pa{font-size:.58rem;color:var(--text3);margin-bottom:2px}
.pc .pd{font-size:.62rem;color:var(--text2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.3}
.pc .pt{display:flex;gap:2px;flex-wrap:wrap;margin-top:3px}
.pc .pt u{font-style:normal;font-size:.52rem;padding:1px 5px;border-radius:2px;background:var(--al);color:var(--accent);text-decoration:none}

/* ============ Usage Item ============ */
.ui{padding:7px 12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card);margin-bottom:4px}
.ui .uh{display:flex;justify-content:space-between;margin-bottom:2px}
.ui .uh h4{font-size:.72rem;font-weight:600}
.ui .uh u{font-size:.58rem;color:var(--text3);text-decoration:none}
.ui .up{font-size:.62rem;color:var(--text2);margin:2px 0}
.ui .utk{font-size:.6rem;font-weight:600;color:var(--accent)}

/* ============ Modal ============ */
.md{display:none;position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.35);align-items:center;justify-content:center}
.md.on{display:flex}
.mb{background:var(--surface);border-radius:12px;padding:18px;width:320px;max-width:90%;max-height:90vh;overflow-y:auto}
.mb h2{font-size:.82rem;font-weight:700;text-align:center}
.mb .ms{font-size:.68rem;color:var(--text2);text-align:center;margin:2px 0 10px}
.mt{display:flex;margin-bottom:10px;border-radius:6px;overflow:hidden;border:1px solid var(--border)}
.mt u{flex:1;text-align:center;padding:4px 6px;font-size:.72rem;cursor:pointer;color:var(--text2);background:var(--bg);font-weight:500;text-decoration:none;transition:background .12s,color .12s}
.mt u:hover{background:var(--al);color:var(--accent)}
.mt u.on{background:var(--accent);color:#fff}
.fd{margin-bottom:8px}
.fd l{font-size:.65rem;color:var(--text2);display:block;margin-bottom:2px}
.fd input{width:100%;padding:5px 10px;border:1px solid var(--border);border-radius:5px;font-size:.78rem;outline:none;background:var(--bg);color:var(--text);font-family:var(--font)}
.fd input:focus{border-color:var(--accent)}

/* ============ Modal Error ============ */
.me{color:#ef4444;font-size:.62rem;min-height:1em;margin-top:4px;text-align:center}

/* ============ Empty State ============ */
.em{text-align:center;padding:30px 10px;color:var(--text3);font-size:.75rem}
.em .ei{font-size:1.3rem;margin-bottom:5px;display:block}

/* ============ Workflow Card ============ */
.wfc{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;margin-bottom:8px;cursor:pointer;transition:border-color .1s,transform .12s}
.wfc:hover{border-color:var(--accent);transform:translateY(-1px)}
.wfc h4{font-size:.75rem;font-weight:600;margin-bottom:2px}
.wfc p{font-size:.62rem;color:var(--text2);line-height:1.3}
.wfc .ws{display:flex;gap:6px;margin-top:8px}
.wfc .ws div{flex:1;height:4px;border-radius:2px;background:var(--al)}

/* ============ Responsive ============ */
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0}
  .tb{display:flex}
  .ct{padding:14px}
  .tg{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}
  .pr{grid-template-columns:1fr}
}