:root {
  --bg: #f4f6fb;
  --surface: #fff;
  --line: #e5e7eb;
  --ink: #111827;
  --muted: #6b7280;
  --blue: #1f6feb;
  --green: #10b981;
}
*{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","Noto Sans SC",sans-serif;background:radial-gradient(1200px 600px at 10% -10%,#dbeafe 0,transparent 50%),radial-gradient(900px 500px at 100% 10%,#d1fae5 0,transparent 45%),var(--bg);color:var(--ink)}
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}
.auth-card{width:min(420px,100%);background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 12px 30px rgba(17,24,39,.08)}
.brand-badge{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;color:#fff;font-weight:700;background:linear-gradient(140deg,var(--blue),#60a5fa)}
h1{margin:10px 0 4px;font-size:28px}p{margin:0 0 16px;color:var(--muted)}
.error{background:#fee2e2;color:#b91c1c;border-radius:10px;padding:10px 12px;margin-bottom:12px}
.input,.textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:14px;background:#fff}
.textarea{resize:vertical}
.btn{display:inline-flex;justify-content:center;align-items:center;border:0;background:linear-gradient(140deg,var(--blue),#3b82f6);color:#fff;border-radius:12px;padding:11px 16px;font-weight:700;text-decoration:none;cursor:pointer}
.btn.ghost{background:#fff;color:#374151;border:1px solid var(--line)}
.layout{max-width:1400px;margin:0 auto;padding:16px}
.topbar{display:flex;justify-content:space-between;gap:12px;align-items:stretch;margin-bottom:14px}
.search{display:flex;gap:10px;flex:1;align-items:center;padding:10px 12px;border:1px solid #dce6f4;background:rgba(255,255,255,.72);backdrop-filter:blur(4px);border-radius:18px;box-shadow:0 8px 24px rgba(17,24,39,.05)}
.search input{flex:1;border:0;border-radius:14px;padding:0 14px;height:48px;line-height:48px;background:#fff;color:#0f172a;font-size:14px;outline:none;box-shadow:inset 0 0 0 1px #e2e8f0}
.search input:focus{box-shadow:inset 0 0 0 2px rgba(31,111,235,.18)}
.search button{border:0;border-radius:14px;padding:0 18px;background:linear-gradient(140deg,#eff6ff,#dbeafe);color:#1d4ed8;font-weight:700;height:48px;line-height:48px;white-space:nowrap;box-shadow:inset 0 0 0 1px #c7dbff;cursor:pointer}
.search button:hover{background:linear-gradient(140deg,#dbeafe,#bfdbfe)}
.green-btn{display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(140deg,var(--green),#34d399);color:#fff;text-decoration:none;border-radius:12px;padding:0 20px;font-weight:700;white-space:nowrap;height:50px;line-height:50px}
.top-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;padding:10px;border:1px solid #dce6f4;background:rgba(255,255,255,.72);backdrop-filter:blur(4px);border-radius:16px}
.top-nav-link{display:inline-flex;align-items:center;gap:8px;border:1px solid #d9e3f1;background:#fff;color:#2f3d52;text-decoration:none;border-radius:12px;padding:9px 14px;font-size:14px;font-weight:600;transition:all .2s ease}
.top-nav-link:hover{background:#eef4ff;border-color:#b9cdf3;transform:translateY(-1px)}
.top-nav form{margin:0}
.top-nav button.top-nav-link{font:inherit;cursor:pointer}
.fab-wrap form{margin:0}
button.fab{font:inherit;cursor:pointer}
.nav-icon{width:16px;height:16px;display:inline-block;border-radius:4px;position:relative;flex:0 0 16px}
.nav-icon.home{background:linear-gradient(140deg,#60a5fa,#3b82f6)}
.nav-icon.plus{background:linear-gradient(140deg,#6ee7b7,#10b981)}
.nav-icon.trash{background:linear-gradient(140deg,#fda4af,#ef4444)}
.nav-icon.safe{background:linear-gradient(140deg,#c4b5fd,#6366f1)}
.nav-icon::after{content:"";position:absolute;inset:4px;border-radius:2px;background:rgba(255,255,255,.8)}
.nav-icon.plus::before,.nav-icon.plus::after{content:"";position:absolute;left:50%;top:50%;background:rgba(255,255,255,.92);transform:translate(-50%,-50%);border-radius:2px}
.nav-icon.plus::before{width:9px;height:2px;inset:auto}
.nav-icon.plus::after{width:2px;height:9px;inset:auto}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.chip{padding:6px 10px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#4b5563;text-decoration:none;font-size:12px}
.chip.active{background:#e8f0fe;border-color:#b8d3ff;color:#1d4ed8}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:0 8px 24px rgba(17,24,39,.05)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.card-item{width:100%;margin:0;border:1px solid var(--line);border-radius:14px;padding:8px;background:#fff;box-shadow:0 6px 16px rgba(15,23,42,.05);animation:cardIn .45s ease both;transition:transform .2s ease,box-shadow .2s ease}
.card-item:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(15,23,42,.10)}
.card-item:nth-child(2n){animation-delay:.05s}
.card-item:nth-child(3n){animation-delay:.1s}
.card-item:nth-child(4n){animation-delay:.15s}
.cover{display:block;border-radius:12px;background:#eef2f7;margin-bottom:8px;overflow:hidden;aspect-ratio:3/4}
.cover-img{display:block;width:100%;height:100%;object-fit:cover;background:#f8fafc}
.cover-empty{font-size:12px;color:#94a3b8}
.card-item h3{margin:0 0 4px;font-size:16px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-item p{margin:0;color:var(--muted);min-height:0;font-size:13px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:6px;font-size:12px;color:#94a3b8}
.form-panel h2,.detail h2{margin:0 0 12px}
.form-panel label{display:block;margin:10px 0 6px;font-size:13px;color:#475569}
.image-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
.existing-image{display:grid;gap:6px;font-size:12px;color:#334155}
.existing-image img{width:100%;height:110px;object-fit:contain;border-radius:10px;border:1px solid var(--line);background:#f8fafc}
.actions{display:flex;gap:10px;margin-top:12px}
.detail{position:relative;margin-top:12px}
.detail-meta{color:var(--muted);font-size:13px;margin-bottom:12px}
.detail-text{line-height:1.7;white-space:normal}
.prompt-block{margin-top:12px;border:1px solid var(--line);border-radius:12px;background:#fbfcff}
.prompt-head{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;border-bottom:1px solid var(--line)}
.prompt-code{margin:0;padding:12px;white-space:pre-wrap;word-break:break-word;font-size:12px;line-height:1.6;color:#1f2937}
.mini-copy{border:1px solid #c9d7ef;background:#fff;color:#1d4ed8;border-radius:8px;padding:4px 10px;font-size:12px;cursor:pointer}
.detail-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-top:12px}
.detail-gallery img{width:100%;height:auto;max-height:none;object-fit:contain;border-radius:12px;border:1px solid var(--line);background:#f8fafc}
.tag-helper{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.tag-suggest{border:1px solid #dbe3ef;background:#fff;border-radius:999px;padding:5px 10px;font-size:12px;color:#334155;cursor:pointer}
.tag-suggest.active{background:#e8f0fe;border-color:#b8d3ff;color:#1d4ed8}
.upload-preview{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin-top:10px}
.upload-preview img{width:100%;height:110px;object-fit:contain;border-radius:10px;border:1px solid var(--line);background:#f8fafc}
.fab-wrap{position:fixed;right:20px;bottom:20px;display:grid;gap:8px;z-index:10}
.fab{border:0;border-radius:999px;padding:10px 14px;color:#fff;font-weight:700;text-decoration:none;text-align:center;box-shadow:0 8px 18px rgba(17,24,39,.2)}
.fab.copy{background:linear-gradient(140deg,#2563eb,#3b82f6)}
.fab.edit{background:linear-gradient(140deg,#10b981,#34d399)}
.fab.delete{background:linear-gradient(140deg,#ef4444,#f87171)}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:20px;background:rgba(17,24,39,.9);color:#fff;border-radius:10px;padding:10px 14px;font-size:13px;opacity:0;transition:.2s;pointer-events:none}
.toast.show{opacity:1}
.empty{color:#64748b}
@keyframes cardIn{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
@media (max-width: 760px){
  .topbar{flex-direction:column}
  .search{padding:8px}
  .top-nav{flex-wrap:nowrap;overflow-x:auto}
  .top-nav-link{flex:0 0 auto}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .card-item{padding:7px}
  .card-item h3{font-size:15px}
  .card-item p{font-size:12px}
}
@media (max-width: 980px){.fab-wrap{right:12px;bottom:12px}}