:root{--color-bg:#fff;--color-bg-alt:#f5f7fa;--color-text:#1a1d21;--color-text-muted:#5b6472;--color-border:#dde2e8;--color-primary:#1d6fb8;--color-primary-dark:#145589;--color-accent:#e8622c;--color-pr:#fff6e5;--color-pr-border:#e8b64c;--color-pr-text:#6b4a12;--color-down:#1a7f4b;--color-down-bg:#e6f5ec;--color-up:#c22f2f;--color-up-bg:#fdeaea;--radius:8px;--max-width:1080px;color-scheme:light;font-size:16px}@media (prefers-color-scheme:dark){:root{--color-bg:#12161b;--color-bg-alt:#1a2027;--color-text:#e7eaee;--color-text-muted:#9aa4b1;--color-border:#2c343e;--color-primary:#5aa3e0;--color-primary-dark:#7cb8ea;--color-accent:#f0824f;--color-pr:#2c2415;--color-pr-border:#8a6d2f;--color-pr-text:#d9b26a;--color-down:#4fc584;--color-down-bg:#14301f;--color-up:#e57373;--color-up-bg:#351a1a;color-scheme:dark}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--color-text);background:var(--color-bg);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Kaku Gothic ProN,Noto Sans JP,Meiryo,sans-serif;line-height:1.7}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.skip-link{z-index:100;background:var(--color-primary);color:#fff;border-radius:0 0 var(--radius) 0;padding:.5rem 1rem;position:absolute;left:-9999px}.skip-link:focus{top:0;left:0}img{max-width:100%;height:auto}.container{max-width:var(--max-width);margin:0 auto;padding:0 1.25rem}.site-header{border-bottom:1px solid var(--color-border);background:var(--color-bg);z-index:10;position:sticky;top:0}.site-header__inner{max-width:var(--max-width);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin:0 auto;padding:.9rem 1.25rem;display:flex}.site-header__logo{color:var(--color-text);font-size:1.25rem;font-weight:700}.site-nav{flex-wrap:wrap;gap:1rem;font-size:.9rem;display:flex}.site-nav a{color:var(--color-text);border-bottom:2px solid #0000;padding:.15rem 0}.site-nav a[aria-current=page]{color:var(--color-primary);border-bottom-color:var(--color-primary);font-weight:600}.site-nav a:hover{color:var(--color-primary);text-decoration:none}.site-nav--mobile{display:none}@media (width<=720px){.site-nav--desktop{display:none}.site-nav--mobile{white-space:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none;border-bottom:1px solid var(--color-border);background:var(--color-bg-alt);flex-wrap:nowrap;gap:1.1rem;padding:.55rem 1.25rem;font-size:.9rem;display:flex;overflow-x:auto}.site-nav--mobile::-webkit-scrollbar{display:none}}.site-footer{border-top:1px solid var(--color-border);color:var(--color-text-muted);background:var(--color-bg-alt);margin-top:3rem;padding:2rem 1.25rem;font-size:.85rem}.site-footer__inner{max-width:var(--max-width);flex-direction:column;gap:.75rem;margin:0 auto;display:flex}.site-footer__links{flex-wrap:wrap;gap:1rem;display:flex}main{min-height:60vh;padding:2rem 0}h1,h2,h3,h4{line-height:1.4}.pr-banner{background:var(--color-pr);border:1px solid var(--color-pr-border);border-radius:var(--radius);color:var(--color-pr-text);margin:1rem 0 1.5rem;padding:.75rem 1rem;font-size:.85rem}.pr-banner p{margin:0}.price-frame{flex-wrap:wrap;align-items:baseline;gap:.5rem;margin:.35rem 0;font-size:.95rem;display:flex}.price-frame__price{color:var(--color-accent);font-size:1.15rem;font-weight:700}.price-frame__points{color:var(--color-text-muted);font-size:.8rem}.price-frame__meta{color:var(--color-text-muted);font-size:.75rem}.price-note{color:var(--color-text-muted);margin:.5rem 0 0;font-size:.75rem}.price-unavailable{color:var(--color-text-muted);margin:.35rem 0;font-size:.85rem}.product-card{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg);gap:1rem;margin:1.25rem 0;padding:1rem;display:flex}@media (width<=560px){.product-card{flex-direction:column}.product-card__image{width:100%;height:140px}.ec-button{text-align:center;width:100%;display:block}}.product-card--compact{flex-direction:column;padding:.75rem}.product-card__image{border-radius:var(--radius);background:var(--color-bg-alt);flex:none;justify-content:center;align-items:center;width:120px;height:120px;display:flex;overflow:hidden}.product-card__image img{object-fit:contain;width:100%;height:100%}.product-card__body{flex:1;min-width:0}.product-card__name{margin:0 0 .4rem;font-size:1.05rem;font-weight:700}.product-card__name a{color:var(--color-text)}.product-card__prices{margin-bottom:.5rem}.product-card__buttons{flex-wrap:wrap;gap:.5rem;margin-top:.5rem;display:flex}.ec-button{background:var(--color-primary);color:#fff;border-radius:999px;padding:.5rem .9rem;font-size:.85rem;font-weight:600;transition:filter .15s;display:inline-block}.ec-button:hover{filter:brightness(.92);text-decoration:none}.ec-button--amazon{color:#221a06;background:#f2a13c}.ec-button--rakuten{background:#bf0000}.ec-button--yahoo{background:#d1002f}.ec-button--asp{background:var(--color-accent)}.spec-table-wrapper{border:1px solid var(--color-border);border-radius:var(--radius);margin:1.5rem 0;overflow-x:auto}table.spec-table{border-collapse:collapse;width:100%;min-width:480px;font-size:.9rem}table.spec-table th,table.spec-table td{border-bottom:1px solid var(--color-border);text-align:left;white-space:nowrap;padding:.55rem .75rem}table.spec-table thead th{background:var(--color-bg-alt);position:sticky;top:0}table.spec-table th.spec-table__row-label{color:var(--color-text-muted);white-space:normal;background:var(--color-bg);z-index:1;min-width:8rem;font-weight:600;position:sticky;left:0}.spec-table__legend{color:var(--color-text-muted);padding:.5rem .75rem;font-size:.75rem}.spec-table__provisional-mark{color:var(--color-accent);font-weight:700}.filter-form{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg-alt);grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:.75rem;margin-bottom:1.5rem;padding:1rem;display:grid}.filter-form label{color:var(--color-text-muted);flex-direction:column;gap:.3rem;font-size:.8rem;display:flex}.filter-form select,.filter-form input{border:1px solid var(--color-border);border-radius:4px;padding:.4rem .5rem;font-size:.9rem}.filter-result-count{color:var(--color-text-muted);margin-bottom:.75rem;font-size:.9rem}.board-list{flex-direction:column;gap:.75rem;margin:0;padding:0;list-style:none;display:flex}.board-row{border:1px solid var(--color-border);border-radius:var(--radius);grid-template-columns:2fr repeat(5,1fr);align-items:center;gap:.5rem;padding:.75rem 1rem;font-size:.85rem;display:grid}.board-row[hidden]{display:none}.board-row__name{font-weight:600}.board-row__name a{color:var(--color-text)}.filter-empty{text-align:center;color:var(--color-text-muted);padding:1rem;display:none}.filter-empty.is-visible{display:block}.article-meta{color:var(--color-text-muted);flex-wrap:wrap;gap:1rem;margin-bottom:1rem;font-size:.85rem;display:flex}.article-body :is(h2,h3){margin-top:2rem}.article-body p{margin:1rem 0}.card-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.25rem;margin:1.5rem 0;display:grid}.simple-card{border:1px solid var(--color-border);border-radius:var(--radius);color:var(--color-text);padding:1.1rem;transition:border-color .15s,box-shadow .15s,transform .15s;display:block}.simple-card:hover{border-color:var(--color-primary);text-decoration:none;transform:translateY(-1px);box-shadow:0 2px 10px #00000014}.simple-card h3{margin:0 0 .4rem;font-size:1.05rem}.simple-card p{color:var(--color-text-muted);margin:0;font-size:.85rem}.breadcrumb{color:var(--color-text-muted);margin-bottom:1rem;font-size:.8rem}.breadcrumb a{color:var(--color-text-muted)}.breadcrumb .is-current{color:var(--color-text)}.hero{padding:2.5rem 0 1.5rem}.hero h1{margin-bottom:.5rem;font-size:1.9rem}.hero p{color:var(--color-text-muted);max-width:640px}.section-title{border-bottom:2px solid var(--color-border);margin:2.5rem 0 1rem;padding-bottom:.4rem;font-size:1.3rem}.section-title__note{color:var(--color-text-muted);margin-left:.5rem;font-size:.8rem;font-weight:400}.price-board{border:1px solid var(--color-border);border-radius:var(--radius);margin:1rem 0;padding:0;list-style:none;overflow:hidden}.price-board__row{flex-wrap:wrap;align-items:center;gap:.75rem;padding:.6rem 1rem;font-size:.9rem;display:flex}.price-board__row:nth-child(odd){background:var(--color-bg-alt)}.price-board__name{flex:16rem;min-width:0;font-weight:600}.price-board__name a{color:var(--color-text)}.price-board__name a:hover{color:var(--color-primary)}.price-board__price{color:var(--color-accent);font-variant-numeric:tabular-nums;font-weight:700}.price-board__badge{background:var(--color-bg-alt);border:1px solid var(--color-border);color:var(--color-text-muted);white-space:nowrap;border-radius:999px;padding:.1rem .55rem;font-size:.75rem}.price-board__badge--down{background:var(--color-down-bg);border-color:var(--color-down);color:var(--color-down);font-weight:700}.price-board__badge--up{background:var(--color-up-bg);border-color:var(--color-up);color:var(--color-up);font-weight:700}.price-board__badge--oos{color:var(--color-up);border-color:var(--color-up)}.price-board__badge--new{color:var(--color-primary);border-color:var(--color-primary)}@media (width<=640px){.board-row{grid-template-columns:1fr 1fr}}.price-history{margin:1.5rem 0}.price-history__title{margin:0 0 .5rem;font-size:1.15rem}.price-history__figure{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg);margin:0;padding:.75rem}.price-history__chart{width:100%;height:auto;display:block}.price-history__tick{fill:var(--color-text-muted);font-size:11px}.price-history__grid{stroke:var(--color-border)}.price-history__dot{stroke:var(--color-bg)}.price-history__point-label{fill:var(--color-text);font-size:11px;font-weight:600}.price-history__legend{color:var(--color-text);flex-wrap:wrap;align-items:center;gap:1rem;margin-top:.5rem;font-size:.8rem;display:flex}.price-history__legend-item{align-items:center;gap:.35rem;display:inline-flex}.price-history__swatch{border-radius:3px;width:12px;height:12px;display:inline-block}.price-history__legend-note{color:var(--color-text-muted)}.price-history__pending{border:1px dashed var(--color-border);border-radius:var(--radius);color:var(--color-text-muted);background:var(--color-bg-alt);padding:1rem;font-size:.9rem}.psu-form{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg-alt);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:.75rem;margin:1.5rem 0;padding:1rem;display:grid}.psu-form label{color:var(--color-text-muted);flex-direction:column;gap:.3rem;font-size:.85rem;display:flex}.psu-form select{border:1px solid var(--color-border);border-radius:4px;padding:.45rem .5rem;font-size:.95rem}.psu-result{border:2px solid var(--color-primary);border-radius:var(--radius);margin:1.5rem 0;padding:1rem 1.25rem}.psu-result__title{color:var(--color-text-muted);margin:0 0 .25rem;font-size:1rem}.psu-result__standard{color:var(--color-primary-dark);margin:0 0 .75rem;font-size:1.6rem}.psu-result__breakdown{color:var(--color-text-muted);margin:0;padding-left:1.25rem;font-size:.9rem}.psu-result__maker{margin:.75rem 0 0;font-size:.9rem}.psu-noscript,.psu-disclaimer p{font-size:.9rem}.psu-formula ol{font-size:.95rem}.psu-disclaimer{border:1px solid var(--color-pr-border);background:var(--color-pr);border-radius:var(--radius);margin:1.5rem 0;padding:.25rem 1.25rem .75rem}.psu-disclaimer h2{font-size:1rem}