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60px)}.help-content section{margin-bottom:24px}.help-content section:last-child{margin-bottom:0}.help-content h3{font-size:14px;color:#888;text-transform:uppercase;margin:0 0 12px;padding-bottom:8px;border-bottom:1px solid #444}.help-content table{width:100%;border-collapse:collapse}.help-content td{padding:8px 0;vertical-align:top}.help-content td:first-child{width:40%;color:#ccc}.help-content td:last-child{color:#999}.help-content kbd{display:inline-block;padding:2px 6px;font-size:12px;font-family:monospace;background:#444;border:1px solid #555;border-radius:4px;color:#fff}.help-content ul{list-style:none;padding:0;margin:0}.help-content li{color:#999;padding:6px 0 6px 16px;position:relative}.help-content li:before{content:"•";position:absolute;left:0;color:#646cff}.admin{min-height:100vh;background:#1a1a2e;color:#fff}.admin-header{padding:40px 20px;text-align:center;background:linear-gradient(135deg,#1a1a2e,#16213e);border-bottom:1px solid #333}.admin-header h1{margin:0 0 8px;font-size:2rem;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.admin-header p{margin:0 0 16px;color:#888}.back-link{color:#667eea;text-decoration:none;font-size:14px}.back-link:hover{text-decoration:underline}.admin-content{max-width:1200px;margin:0 auto;padding:40px 20px}.url-section,.preview-section,.bulk-section{margin-bottom:48px}.url-section h2,.preview-section h2,.bulk-section h2{margin:0 0 8px;font-size:1.25rem;color:#fff}.section-desc{margin:0 0 20px;color:#888;font-size:14px}.url-table{width:100%;border-collapse:collapse;font-size:14px}.url-table th,.url-table td{padding:12px;text-align:left;border-bottom:1px solid #333}.url-table th{background:#2a2a3a;color:#aaa;font-weight:400;text-transform:uppercase;font-size:11px}.col-no{width:50px;text-align:center;color:#667eea;font-weight:700}.col-name{width:120px}.col-url code{background:#2a2a3a;padding:4px 8px;border-radius:4px;font-size:12px;color:#8a9fef;word-break:break-all}.col-actions{width:80px;text-align:center}.copy-btn{padding:6px 12px;font-size:12px;border:none;border-radius:4px;background:#667eea;color:#fff;cursor:pointer;transition:background .2s}.copy-btn:hover{background:#5a6fd6}.preview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}@media(max-width:900px){.preview-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:600px){.preview-grid{grid-template-columns:repeat(2,1fr)}}.preview-card{background:#2a2a3a;border-radius:12px;overflow:hidden}.preview-header{display:flex;align-items:center;gap:8px;padding:12px;background:#333}.preview-number{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:#667eea;border-radius:50%;font-size:12px;font-weight:700}.preview-name{font-size:14px;color:#ccc}.preview-image{position:relative;aspect-ratio:16 / 9;background:#1a1a2a}.preview-image img{width:100%;height:100%;object-fit:contain}.no-image{position:absolute;inset:0;display:none;align-items:center;justify-content:center;color:#666;font-size:12px}.no-image.show{display:flex}.bulk-copy-btn{padding:16px 32px;font-size:16px;border:none;border-radius:8px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;cursor:pointer;transition:transform .2s,box-shadow .2s}.bulk-copy-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}.viewer{width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;background:transparent;overflow:hidden}.viewer-image{max-width:100%;max-height:100%;object-fit:contain}.viewer-loading,.viewer-error{width:100vw;height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#1a1a1a;color:#888;font-size:18px}.viewer-hint{font-size:14px;color:#666;margin-top:8px}*{margin:0;padding:0;box-sizing:border-box}html{overflow:hidden;height:100%}body{overflow:hidden;height:100%;position:fixed;width:100%;top:0;left:0;overscroll-behavior:none;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#1a1a1a;color:#fff;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;height:100%;overflow:hidden}