﻿a{color:inherit;text-decoration:none}header{border-bottom:1px solid #ededed;background:#e5e5e5}.header-inner{max-width:960px;margin:0 auto;padding:5px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.brand-block{display:flex;align-items:center;gap:10px}.brand-link{display:inline-flex;align-items:center;gap:6px}.brand-logo{height:20px;width:20px;display:block;flex-shrink:0}.brand-name{font-size:14px;font-weight:bold;white-space:nowrap}.brand-copy{font-size:12px;color:#666;line-height:110%}nav{display:flex;gap:14px;font-size:14px}nav a:hover{text-decoration:underline}section{padding:0 0 40px}.section-title{font-size:16px;font-weight:bold;margin:0 0 16px}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(220px, 1fr));gap:14px}.tool-card{padding:18px;display:flex;flex-direction:column;gap:8px;border-radius:12px;border:1px solid #ededed;background-color:#fff;box-shadow:0 4px 12px rgba(0,0,0,.05)}a.tool-card:hover{border:1px solid #ddd;background-color:#efeeea}.tool-card h3{font-size:15px;margin:0;font-weight:bold}.tool-card p{font-size:14px;color:#555;margin:0}@media(max-width: 640px){.brand-copy{font-size:10px !important}nav{font-size:10px !important}}.sp-only{display:none}@media(max-width: 420px){.sp-only{display:inline}}footer{border-top:1px solid #ededed}.footer-inner{max-width:960px;margin:0 auto;padding:28px 20px 16px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:20px}.footer-inner h4{font-size:14px;margin:0 0 10px;font-weight:bold}.footer-brand p{font-size:14px;color:#555;max-width:28em;margin-top:8px}.footer-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px;font-size:14px}.footer-links a:hover{text-decoration:underline}.footer-bottom{max-width:960px;margin:0 auto;padding:12px 20px 20px;border-top:1px solid #ededed;font-size:13px;color:#777;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}@media(max-width: 640px){.footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}@media(max-width: 420px){.footer-inner{grid-template-columns:1fr}}body{font-family:Helvetica,Arial,"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic Medium","Yu Gothic",sans-serif;background-color:#f5f7fa;margin:0;color:#333}.container{max-width:650px;margin:40px auto;background:#fff;padding:30px;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.05)}h2{text-align:center;color:#2c3e50;margin-top:0}.sub-text{text-align:center;font-size:14px;color:#666;margin-bottom:10px}.drop-zone{border:2px dashed #007bff;border-radius:8px;padding:30px;text-align:center;background:#f8f9fa;cursor:pointer;transition:background .2s,border-color .2s}.drop-zone.dragover{background:#e9ecef;border-color:#0056b3}.drop-zone p{margin:0;font-size:15px;color:#6c757d}.drop-zone input{display:none}.preview-container{display:none;margin-top:20px;padding:15px;border:1px solid #e0e0e0;border-radius:8px;background:#fafafa;text-align:center}.file-info{font-weight:bold;margin-bottom:5px;word-break:break-all}.page-count{font-size:14px;color:#555;margin-bottom:10px}.preview-hint{font-size:12px;color:#888;margin:0 0 12px}.spread-preview{display:flex;flex-direction:column;gap:14px;align-items:center}.spread-pair{display:flex;border:1px solid #ccc;border-radius:4px;box-shadow:0 2px 5px rgba(0,0,0,.1);background:#fff;overflow:hidden}.spread-pair .thumb{position:relative;width:90px;height:120px;background:#f0f0f0;display:flex;align-items:center;justify-content:center;border-left:1px solid #ddd}.spread-pair .thumb:first-child{border-left:none}.spread-pair .thumb img,.spread-pair .thumb canvas{max-width:100%;max-height:100%;display:block;-webkit-user-drag:none;user-select:none;-webkit-user-select:none}.spread-pair .thumb.blank{color:#bbb;font-size:11px}.spread-pair .thumb .page-label{position:absolute;bottom:2px;right:4px;font-size:10px;color:#fff;background:rgba(0,0,0,.55);padding:1px 5px;border-radius:3px}.spread-pair .thumb .page-label.blank-badge{background:rgba(150,120,0,.75)}.spread-pair .thumb[data-drag-index]{cursor:grab}.spread-pair .thumb.dragging{opacity:.35}.spread-pair .thumb.drag-over{outline:2px dashed #007bff;outline-offset:-2px}.drag-ghost{position:fixed;z-index:1000;pointer-events:none;margin:0 !important;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#f0f0f0;opacity:.9;transform:scale(1.06);box-shadow:0 6px 18px rgba(0,0,0,.35);border-radius:4px;transition:outline-color .1s}.drag-ghost img,.drag-ghost canvas{max-width:100%;max-height:100%;display:block}.drag-ghost.will-delete{outline:3px solid #dc3545;outline-offset:2px;opacity:.6}.option-group{margin-top:20px;text-align:center}.option-group label{font-weight:bold;margin-right:8px}.option-group select{padding:8px 12px;border-radius:6px;border:1px solid #ccc;font-size:14px;background-color:#fff;cursor:pointer}.action-area{margin-top:25px;text-align:center}.btn{background:#007bff;color:#fff;border:none;padding:12px 30px;font-size:16px;border-radius:6px;cursor:pointer;font-weight:bold;transition:background .2s}.btn:hover:not(:disabled){background:#0056b3}.btn:disabled{background:#ccc;cursor:not-allowed}.btn-secondary{background:#fff;color:#555;border:1px solid #ccc;margin-left:10px}.btn-secondary:hover:not(:disabled){background:#f0f0f0}.action-hint{margin-top:10px;font-size:12px;color:#888}.message{margin-top:15px;font-weight:bold;text-align:center}.message.error{color:#dc3545}.message.success{color:#28a745}.spread-pair .thumb .cover-badge{position:absolute;top:2px;right:4px;font-size:10px;font-weight:bold;color:#fff;background:rgba(220,50,50,.85);padding:1px 5px;border-radius:3px;white-space:nowrap}.faq-jump-link{text-align:center;margin:4px 0 20px 0;font-size:13px;font-weight:bold}.faq-jump-link a{color:#007bff;text-decoration:underline}.faq-accordion{margin-top:18px;border:1px solid #e0e0e0;border-radius:8px;padding:4px 16px;background:#fafafa;scroll-margin-top:16px}.faq-accordion summary{cursor:pointer;padding:10px 0;font-weight:bold;color:#333;list-style:none}.faq-accordion summary::-webkit-details-marker{display:none}.faq-accordion summary::before{content:"▶ ";display:inline-block;transition:transform .15s ease}.faq-accordion[open] summary::before{transform:rotate(90deg)}.faq-list{margin:4px 0 12px;padding-left:20px;font-size:13px;line-height:1.8;color:#444}.faq-list li{margin-bottom:4px}.faq-back{text-align:right;margin:0 0 10px}.faq-back a{font-size:12px;color:#888;text-decoration:underline}