:root{--color-bg: #f7f8fa;--color-surface: #ffffff;--color-border: #e2e5ea;--color-text: #1c2027;--color-text-sub: #5b6472;--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-accent: #0d9488;--color-danger: #dc2626;--color-danger-bg: #fef2f2;--color-success-bg: #f0fdf4;--color-success-text: #15803d;--radius: 10px;--max-width: 880px;font-size:16px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic,Noto Sans JP,Meiryo,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.7;-webkit-font-smoothing:antialiased}a{color:var(--color-primary)}img{max-width:100%}.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:10}.site-header__inner{max-width:var(--max-width);margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between}.site-logo{font-weight:700;font-size:1.1rem;color:var(--color-text);text-decoration:none;display:flex;align-items:center;gap:6px}.site-logo__badge{display:inline-block;font-size:.65rem;font-weight:700;color:#fff;background:var(--color-accent);padding:2px 6px;border-radius:4px;letter-spacing:.02em}.container{max-width:var(--max-width);margin:0 auto;padding:24px 20px 60px}.hero{text-align:center;padding:40px 0 28px}.hero h1{font-size:1.75rem;margin:0 0 12px}.hero p{color:var(--color-text-sub);font-size:1.02rem;max-width:620px;margin:0 auto}.feature-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:0 0 20px}.feature-badge{display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--color-border);border-radius:999px;padding:8px 16px;font-size:.88rem;font-weight:700;color:var(--color-text)}.feature-badge__icon{color:var(--color-primary)}.privacy-banner{display:flex;align-items:center;gap:12px;background:var(--color-success-bg);border:1px solid #bbf7d0;color:var(--color-success-text);border-radius:var(--radius);padding:14px 18px;margin:0 0 28px;font-weight:600}.privacy-banner__icon{font-size:1.3rem;flex-shrink:0}.tool-group{margin:40px 0 8px}.tool-group__title{font-size:1.2rem;margin:0 0 4px}.tool-group__desc{color:var(--color-text-sub);font-size:.9rem;margin:0 0 16px}.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}@media (max-width: 560px){.tool-grid{grid-template-columns:1fr}}.tool-card{display:block;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:20px;text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s,transform .15s}.tool-card:hover{border-color:var(--color-primary);box-shadow:0 4px 14px #2563eb1a;transform:translateY(-2px)}.tool-card__icon{font-size:1.8rem;margin-bottom:8px}.tool-card h2{font-size:1.05rem;margin:0 0 6px}.tool-card p{color:var(--color-text-sub);font-size:.9rem;margin:0}.tool-header{margin-bottom:20px}.tool-header h1{font-size:1.5rem;margin:0 0 6px}.tool-header p{color:var(--color-text-sub);margin:0}.breadcrumb{font-size:.85rem;color:var(--color-text-sub);margin-bottom:14px}.breadcrumb a{color:var(--color-text-sub)}.local-notice{display:flex;gap:10px;align-items:flex-start;background:#eff6ff;border:1px solid #bfdbfe;border-radius:var(--radius);padding:14px 16px;margin-bottom:24px;font-size:.92rem}.local-notice__icon{font-size:1.1rem;flex-shrink:0}.local-notice strong{display:block;margin-bottom:2px}.local-notice p{margin:0;color:var(--color-text-sub)}.dropzone{border:2px dashed #b6c0cc;border-radius:var(--radius);background:var(--color-surface);padding:40px 20px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}.dropzone:hover,.dropzone--active{border-color:var(--color-primary);background:#eff6ff}.dropzone__icon{font-size:2.2rem;margin-bottom:8px}.dropzone__main{font-weight:600;margin-bottom:4px}.dropzone__sub{color:var(--color-text-sub);font-size:.85rem}.dropzone input[type=file]{display:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:none;border-radius:8px;font-size:.95rem;font-weight:600;padding:11px 20px;cursor:pointer;background:var(--color-primary);color:#fff;transition:background .15s}.btn:hover:not(:disabled){background:var(--color-primary-dark)}.btn:disabled{background:#c3cad4;cursor:not-allowed}.btn--secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn--secondary:hover:not(:disabled){background:#f1f3f6}.btn--danger{background:var(--color-surface);color:var(--color-danger);border:1px solid #fecaca}.btn--danger:hover:not(:disabled){background:var(--color-danger-bg)}.btn--sm{padding:6px 12px;font-size:.82rem}.file-list{list-style:none;padding:0;margin:18px 0;display:flex;flex-direction:column;gap:8px}.file-list__item{display:flex;align-items:center;gap:10px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:10px 12px}.file-list__grip{cursor:grab;color:#a7b0bd;-webkit-user-select:none;user-select:none}.file-list__name{flex:1;font-size:.9rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-list__meta{font-size:.8rem;color:var(--color-text-sub);flex-shrink:0}.file-list__order{flex-shrink:0;color:var(--color-text-sub);font-size:.8rem}.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:20px}.form-row{margin:18px 0}.form-row label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px}.form-row .hint{color:var(--color-text-sub);font-size:.82rem;margin-top:4px}.radio-group{display:flex;flex-direction:column;gap:8px}.radio-option{display:flex;align-items:center;gap:8px;font-size:.92rem}input[type=text],input[type=number]{border:1px solid var(--color-border);border-radius:6px;padding:9px 12px;font-size:.92rem;width:100%;max-width:260px}.progress{margin-top:20px}.progress__track{height:8px;border-radius:4px;background:#e5e9ef;overflow:hidden}.progress__bar{height:100%;background:var(--color-primary);width:0%;transition:width .2s}.progress__label{font-size:.85rem;color:var(--color-text-sub);margin-top:6px}.alert{border-radius:var(--radius);padding:14px 16px;margin-top:20px;font-size:.9rem}.alert--error{background:var(--color-danger-bg);border:1px solid #fecaca;color:var(--color-danger)}.alert--success{background:var(--color-success-bg);border:1px solid #bbf7d0;color:var(--color-success-text)}.alert--warning{background:#fffbeb;border:1px solid #fde68a;color:#92400e}.alert h3{margin:0 0 4px;font-size:.95rem}.alert p{margin:0}.alert ul{margin:6px 0 0;padding-left:18px}.thumb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:14px;margin:20px 0}.thumb-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:8px;position:relative;cursor:grab;transition:box-shadow .15s,opacity .15s}.thumb-card--removed{opacity:.35}.thumb-card--dragging{opacity:.5}.thumb-card__img-wrap{border:1px solid var(--color-border);border-radius:4px;overflow:hidden;background:#f1f3f6;aspect-ratio:3 / 4;display:flex;align-items:center;justify-content:center}.thumb-card__img-wrap img{width:100%;height:100%;object-fit:contain}.thumb-card__label{text-align:center;font-size:.78rem;color:var(--color-text-sub);margin-top:6px}.thumb-card__toggle{position:absolute;top:12px;right:12px;width:26px;height:26px;border-radius:50%;border:none;background:#ffffffeb;box-shadow:0 1px 3px #0003;cursor:pointer;font-size:.85rem;line-height:1;color:var(--color-danger)}section.article{margin-top:48px;border-top:1px solid var(--color-border);padding-top:32px}section.article h2{font-size:1.15rem;margin:28px 0 10px}section.article h2:first-child{margin-top:0}section.article p,section.article li{color:var(--color-text-sub);font-size:.94rem}section.article ol,section.article ul{padding-left:22px}.site-footer{border-top:1px solid var(--color-border);padding:24px 20px 40px;text-align:center;color:var(--color-text-sub);font-size:.82rem}.site-footer a{color:var(--color-text-sub)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}