:root{--color-bg:#fff;--color-text:#1f2328;--color-muted:#57606a;--color-border:#e2e5e9;--color-surface:#f6f7f9;--color-surface-2:#eef0f3;--color-accent:#0f6bb5;--color-accent-dark:color-mix(in srgb, var(--color-accent) 78%, black);--color-accent-light:color-mix(in srgb, var(--color-accent) 14%, var(--color-bg));--color-accent-soft:color-mix(in srgb, var(--color-accent) 7%, var(--color-bg));--color-amazon-1:#e88b00;--color-amazon-2:#e88b00;--color-rakuten-1:#bf0000;--color-rakuten-2:#bf0000;--color-pros-bg:#edf9f0;--color-pros-text:#1e7a34;--color-cons-bg:#fdeeee;--color-cons-text:#b3261e;--gold-1:#c8a13c;--gold-2:#c8a13c;--silver-1:#8f9aa6;--silver-2:#8f9aa6;--bronze-1:#a9713f;--bronze-2:#a9713f;--rating-color:#f5a623;--spec-th-bg:var(--color-surface);--rating-bar-bg:var(--color-surface-2);--font-heading:"Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;--font-body:"Noto Sans JP", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino 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var(--ease);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;line-height:1;display:flex;position:fixed;bottom:1.25rem;right:1.25rem;transform:translateY(12px)scale(.9)}.back-to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)scale(1)}.back-to-top:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)scale(1.04)}.reveal{opacity:0;transition:opacity .6s var(--ease), transform .6s var(--ease);transform:translateY(16px)}.reveal.is-visible{opacity:1;transform:translateY(0)}@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transition:none;transform:none}.back-to-top,.product-card,.article-card,.btn-affiliate,.hero-cta{transition:none!important}}.site-header{z-index:800;border-bottom:1px solid var(--color-border);background:color-mix(in srgb, var(--color-bg) 82%, transparent);-webkit-backdrop-filter:blur(10px)saturate(160%);transition:box-shadow .25s var(--ease), background .25s var(--ease);padding:1.1rem 0;position:sticky;top:0}.site-header.is-scrolled{box-shadow:var(--shadow-md)}.site-header .container{justify-content:space-between;align-items:center;gap:1rem;display:flex}.site-title{font-family:var(--font-heading);font-size:1.3rem;font-weight:var(--heading-weight);color:var(--color-text);letter-spacing:-.01em;text-decoration:none}.site-nav{align-items:center;display:flex}.site-nav a{color:var(--color-muted);transition:color .15s var(--ease);margin-left:1.25rem;font-size:.9rem;font-weight:600;text-decoration:none}.site-nav a:hover{color:var(--color-accent-dark)}.site-footer{border-top:1px solid var(--color-border);color:var(--color-muted);background:var(--color-surface);margin-top:4rem;padding:2.5rem 0;font-size:.85rem}.site-footer nav a{color:var(--color-muted);margin-right:1.25rem;font-weight:600;text-decoration:none}.site-footer nav a:hover{color:var(--color-accent-dark)}.site-footer p{margin:1rem 0 0}main{padding:0 0 3rem}h1,h2,h3,h4{line-height:1.4;font-weight:var(--heading-weight);font-family:var(--font-heading)}h1{margin:0 0 .75rem;font-size:clamp(1.6rem,4vw,2rem)}h2{border-left:5px solid var(--color-accent);margin:2.5rem 0 1.1rem;padding:.15rem 0 .15rem .75rem;font-size:1.4rem}h3{margin:1.75rem 0 .75rem;font-size:1.15rem}p{margin:0 0 1.1rem}ul,ol{margin:0 0 1.1rem;padding-left:1.4rem}li{margin-bottom:.4rem}table{border-collapse:separate;border-spacing:0;border-radius:var(--radius);border:1px solid var(--color-border);width:100%;box-shadow:var(--shadow-sm);margin:1.5rem 0;font-size:.92rem;display:block;overflow-x:auto}th,td{border-bottom:1px solid var(--color-border);border-right:1px solid var(--color-border);text-align:left;white-space:nowrap;font-variant-numeric:tabular-nums;padding:.7rem .9rem}th:last-child,td:last-child{border-right:none}tr:last-child td{border-bottom:none}th{background:var(--spec-th-bg);color:var(--color-text);border-bottom:2px solid var(--color-border);font-weight:700;position:sticky;top:0}tbody tr{transition:background .15s var(--ease)}tbody tr:hover{background:var(--color-accent-soft)}blockquote{border-left:4px solid var(--color-accent);background:var(--color-surface);color:var(--color-muted);border-radius:0 var(--radius) var(--radius) 0;margin:1.25rem 0;padding:.9rem 1.1rem}code{background:var(--color-surface);border-radius:4px;padding:.15rem .4rem;font-size:.9em}.pr-notice{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);color:var(--color-muted);margin:0 0 1.75rem;padding:.8rem 1.1rem;font-size:.85rem}.contact-preparing{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border);border-radius:var(--radius);margin:0 0 1.75rem;padding:1.1rem 1.4rem}.contact-preparing p:last-child{margin-bottom:0}.contact-form{max-width:480px}.contact-form-honeypot{opacity:0;width:1px;height:1px;position:absolute;left:-9999px}.contact-form-field{margin-bottom:1.25rem}.contact-form-field label{margin-bottom:.4rem;font-weight:700;display:block}.contact-form-required{color:var(--color-cons-text,#b3261e);margin-left:.3rem;font-size:.75rem;font-weight:700}.contact-form-field input,.contact-form-field textarea{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);width:100%;color:var(--color-text);font-family:var(--font-body);padding:.7rem .9rem;font-size:1rem}.contact-form-field textarea{resize:vertical;min-height:9rem;line-height:1.7}.contact-form-field input:focus,.contact-form-field textarea:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-soft);outline:none}.contact-form-submit{cursor:pointer;border:none;font-size:1rem}.contact-form-submit:disabled{opacity:.6;cursor:not-allowed}.contact-form[aria-busy=true] .contact-form-field{opacity:.72}.contact-form-status{margin:1rem 0 0;font-weight:600}.contact-form-status--success{color:var(--color-pros-text,#1e7a34)}.contact-form-status--error{color:var(--color-cons-text,#b3261e)}.hero{isolation:isolate;background:var(--color-surface);color:var(--color-text);text-align:left;padding:var(--space-4) var(--space-3);margin:0 0 var(--space-4);border-bottom:1px solid var(--color-border);position:relative;overflow:hidden}.hero--image{background:#000}.hero--image .hero-bg{z-index:-2;position:absolute;inset:0}.hero--image .hero-bg img{object-fit:cover;width:100%;height:100%}.hero--image .hero-bg:after{content:"";z-index:1;background-image:linear-gradient(#00000073, #00000073), linear-gradient(color-mix(in srgb, var(--color-accent-dark) 80%, transparent), color-mix(in 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solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);flex-shrink:0;justify-content:center;align-items:center;width:160px;height:160px;display:flex;overflow:hidden}.product-card .product-thumb img{object-fit:contain;width:100%;height:100%}.product-thumb-empty{width:100%;height:100%;color:var(--color-muted);background:var(--color-surface);justify-content:center;align-items:center;display:flex}.product-thumb-wrap{width:100%;height:100%;position:relative}.product-thumb-wrap img{object-fit:contain;width:100%;height:100%}.product-thumb-note{letter-spacing:-.02em;white-space:nowrap;text-align:center;color:#fff;background:#0000008c;margin:0;padding:.15rem .2rem;font-size:.55rem;line-height:1.2;position:absolute;bottom:0;left:0;right:0}.product-card .product-body{flex:1;min-width:0}.product-card h3{margin:0 0 .4rem;font-size:1.15rem}.product-card .product-desc{color:var(--color-text);margin:0 0 .75rem;font-size:.9rem}.product-rating{align-items:center;gap:.5rem;margin:0 0 .6rem;display:flex}.stars-wrap{display:inline-flex;position:relative}.product-rating .stars{gap:1px;display:flex}.product-rating .stars-bg{color:var(--rating-bar-bg,var(--color-border))}.product-rating .stars-bg svg path{fill:currentColor}.product-rating .stars-fill{white-space:nowrap;color:var(--rating-color,#f5a623);position:absolute;top:0;left:0;overflow:hidden}.product-rating .stars-fill svg path{fill:currentColor}.product-rating .rating-number{color:var(--color-text);font-size:.9rem;font-weight:700}.product-spec-table{table-layout:fixed;border-collapse:collapse;width:100%;margin:0 0 .9rem;font-size:.85rem}.product-spec-table th,.product-spec-table td{border:1px solid var(--color-border);text-align:left;vertical-align:top;overflow-wrap:break-word;padding:.45rem .7rem}.product-spec-table 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li:before{content:"";text-align:center;color:#fff;border-radius:50%;width:1rem;height:1rem;font-size:.7rem;font-weight:700;line-height:1rem;position:absolute;top:.1rem;left:0}.product-pros li:before{content:"+";background:var(--color-pros-text)}.product-cons li:before{content:"−";background:var(--color-muted)}.product-cta-row{clear:both;flex-wrap:wrap;gap:.75rem;margin-top:1rem;display:flex}.btn-affiliate{color:#fff;text-align:center;min-width:140px;transition:filter .15s var(--ease);border-radius:6px;flex:1;justify-content:center;align-items:center;gap:.4rem;padding:.85rem 1.4rem;font-size:1rem;font-weight:700;text-decoration:none;display:inline-flex}.btn-affiliate:hover{filter:brightness(1.06);color:#fff}.btn-affiliate .btn-chevron{flex-shrink:0}.btn-affiliate--full{flex:100%}.btn-amazon{background:var(--color-amazon-2)}.btn-rakuten{background:var(--color-rakuten-2)}.product-card--info{padding-bottom:1.5rem}.section-products{border-top:1px solid var(--color-border);margin-top:3rem;padding-top:1.5rem}.author-box{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);align-items:center;gap:1rem;margin-top:3rem;padding:1.4rem;display:flex}.author-avatar{background:var(--color-accent-light);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:56px;height:56px;font-size:1.6rem;display:flex;overflow:hidden}.author-avatar img{object-fit:cover;border-radius:50%;width:100%;height:100%}.author-name{margin:0 0 .25rem;font-weight:700}.author-bio{color:var(--color-muted);margin:0;font-size:.88rem}.error-page{text-align:center;padding:var(--space-5) 0}.error-page .error-code{font-family:var(--font-heading);color:var(--color-accent);margin:0 0 var(--space-2);font-variant-numeric:tabular-nums;font-size:5rem;font-weight:700;line-height:1}.btn-primary{background:var(--color-accent);color:#fff;box-shadow:var(--shadow-sm);transition:filter .15s var(--ease), box-shadow .15s var(--ease);border-radius:6px;padding:.8rem 1.9rem;font-weight:700;text-decoration:none;display:inline-block}.btn-primary:hover{color:#fff;filter:brightness(1.08);box-shadow:var(--shadow-md)}.product-spec-table td,.spec-table td,.rating-number{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}@media (width<=560px){.product-card-main{grid-template-columns:1fr}.product-card .product-thumb{width:100%;max-width:240px;margin:0 auto}.product-pros-cons{grid-template-columns:1fr}.product-cta-row{flex-direction:column}}@media (width<=480px){.article-card{flex-direction:column}.article-grid{grid-template-columns:1fr}.btn-affiliate{width:100%}.hero{padding:var(--space-4) var(--space-2)}.back-to-top{bottom:1rem;right:1rem}}html[data-theme=modern]{--color-bg:#fff;--color-text:#1f2328;--color-muted:#57606a;--color-border:#e2e5e9;--color-surface:#f6f7f9;--color-surface-2:#eef0f3;--color-accent:#0f6bb5;--color-accent-dark:color-mix(in srgb, var(--color-accent) 78%, 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