*{box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
body{background:#f1f5f9;color:#1e293b;margin:0;line-height:1.6;display:flex;flex-direction:column;min-height:100vh}
header{background:#fff;border-bottom:1px solid #e2e8f0;padding:16px 30px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.logo{font-size:22px;font-weight:800;color:#2563eb;text-decoration:none}.logo span{color:#0f172a}
nav{display:flex;gap:18px;flex-wrap:wrap}nav a{color:#475569;font-size:14px;font-weight:600;text-decoration:none}nav a:hover{color:#2563eb}
.main-content{flex:1;max-width:850px;width:100%;margin:30px auto;padding:0 16px}
.card{background:#fff;padding:36px;border-radius:16px;border:1px solid #e2e8f0;box-shadow:0 10px 25px -5px rgba(0,0,0,.05)}
h1{font-size:27px;text-align:center;margin:0 0 8px;color:#0f172a;line-height:1.3}.article h1{text-align:left}
.subtitle,.muted{text-align:center;color:#64748b;font-size:15px}
.upload-zone{border:2px dashed #93c5fd;background:#f8fafc;padding:32px 16px;border-radius:12px;text-align:center;margin:24px 0 16px}
input[type=file]{display:none}
.upload-btn{display:inline-block;padding:14px 30px;background:#2563eb;color:#fff;border-radius:8px;cursor:pointer;font-weight:600;text-decoration:none}.upload-btn:hover{background:#1d4ed8}
.controls-box{background:#f8fafc;border:1px solid #e2e8f0;padding:18px;border-radius:10px;margin-bottom:14px;display:none}
.controls-box label{font-weight:600;display:block;margin-bottom:8px}.controls-box select{width:100%;padding:12px;border-radius:8px;border:1px solid #cbd5e1}
.process-btn{width:100%;background:#16a34a;color:#fff;border:0;padding:15px;font-size:16px;font-weight:700;border-radius:8px;cursor:pointer;display:none}.process-btn:hover{background:#15803d}
#preview-section{display:none;margin-top:26px;padding-top:22px;border-top:1px solid #e2e8f0;text-align:center}
.zip-download-btn{display:block;width:100%;background:#2563eb;color:#fff;padding:16px;border-radius:10px;font-weight:700;font-size:16px;border:0;cursor:pointer;margin-bottom:16px}
.reset-btn{background:#fff;border:1px solid #cbd5e1;border-radius:8px;padding:10px 20px;cursor:pointer;font-weight:600;color:#475569}
.batch-list{display:flex;flex-direction:column;gap:12px;margin:16px 0;text-align:left}
.batch-item{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:10px 14px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.batch-thumb{width:50px;height:50px;object-fit:cover;border-radius:6px}.batch-info{flex:1;min-width:150px}
.batch-info strong{display:block;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:260px}
.batch-stats{font-size:13px;color:#64748b;display:flex;gap:12px;flex-wrap:wrap}.saved{color:#16a34a;font-weight:600}.err{color:#dc2626}
.item-download-btn{background:#0284c7;color:#fff;text-decoration:none;padding:8px 14px;border-radius:6px;font-weight:600;font-size:13px}
.seo-section{margin-top:36px;padding-top:26px;border-top:1px solid #e2e8f0}
h2{font-size:20px;color:#0f172a;margin:24px 0 8px}h3{font-size:16px;margin:16px 0 4px}
p,li{color:#475569;font-size:15px;line-height:1.75}a{color:#2563eb}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin:18px 0}
.feature-item{background:#f8fafc;padding:16px;border-radius:10px;border:1px solid #e2e8f0}.feature-item h3{color:#2563eb;margin:0 0 6px}.feature-item p{margin:0;font-size:13px}
.cform label{display:block;font-weight:600;margin-bottom:12px}.cform input,.cform textarea{width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:8px;margin-top:4px}
footer{background:#fff;border-top:1px solid #e2e8f0;padding:26px 16px;text-align:center;font-size:14px;color:#64748b}
.footer-links{display:flex;justify-content:center;gap:8px 18px;margin-top:10px;flex-wrap:wrap}.footer-links a{color:#64748b;text-decoration:none}.footer-links a:hover{color:#2563eb}
@media(max-width:640px){.card{padding:20px}h1{font-size:22px}header{justify-content:center}}