:root{--bg:#f6f7f9;--surface:#fff;--text:#1d2330;--muted:#5b6475;--border:#e1e5ec;--accent:#2155c4;--accent-weak:#e6edfb;--on-accent:#fff;--gold:#c59200;--gold-weak:#fdf3e1;--silver:#7b8494;--bronze:#8f3d1f;--warn:#b42318;--warn-weak:#fdecea;--radius:12px;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--bg:#12151b;--surface:#1b1f27;--text:#e7eaf0;--muted:#a0a8b8;--border:#2c323d;--accent:#7da4ff;--accent-weak:#1a2640;--on-accent:#0c1428;--gold:#fc3;--gold-weak:#3a2f1a;--silver:#c3cad6;--bronze:#c4673d;--warn:#ff8a80;--warn-weak:#3b1f1d}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;margin:0;font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,Yu Gothic UI,sans-serif;line-height:1.7}a{color:var(--accent)}h1,h2,h3{line-height:1.35}h1{margin:1.5rem 0 .75rem;font-size:1.6rem}h2{margin:2rem 0 .75rem;font-size:1.25rem}.container{width:100%;max-width:880px;margin:0 auto;padding:0 16px}.muted{color:var(--muted)}.small{font-size:.875rem}.site-header{background:var(--surface);border-bottom:1px solid var(--border)}.header-inner{justify-content:space-between;align-items:center;gap:12px;padding-top:6px;padding-bottom:6px;display:flex}.logo{white-space:nowrap;min-width:0;color:var(--text);align-items:center;gap:8px;font-size:clamp(1rem,4.6vw,1.15rem);font-weight:700;text-decoration:none;display:inline-flex}.logo-icon{flex:none}.site-header nav{flex:none;gap:2px;display:flex}.nav-item{min-width:52px;color:var(--muted);white-space:nowrap;border-radius:8px;flex-direction:column;align-items:center;gap:1px;padding:4px 6px;font-size:.68rem;line-height:1.2;text-decoration:none;display:flex}.nav-item:hover{background:var(--bg)}.nav-item[aria-current=page]{color:var(--accent);font-weight:700}.site-footer{border-top:1px solid var(--border);color:var(--muted);margin-top:48px;padding:24px 0 40px;font-size:.85rem}.brand-links a{margin-right:12px}.brand-links a:first-child{margin-right:0}.best{border-radius:var(--radius);background:var(--accent-weak);border:1px solid var(--border);margin:16px 0;padding:16px 20px}.best strong{font-size:1.15rem}.rank-head{align-items:center;gap:8px;display:flex}.provider-logo{border:1px solid var(--border);object-fit:contain;background:#fff;border-radius:6px;flex:none}.name-with-logo{align-items:center;gap:8px;display:inline-flex}.ranking{gap:10px;margin:0;padding:0;list-style:none;display:grid}.rank-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);grid-template-columns:48px 1fr auto;align-items:center;gap:12px;padding:14px 16px;display:grid}.rank-item.is-top{border-color:var(--gold);box-shadow:0 0 0 1px var(--gold) inset}.rank-num{text-align:center;white-space:nowrap;color:var(--muted);font-size:1.5rem;font-weight:800}.crown{margin:0 auto 2px;display:block}.rank-num small{margin-left:1px;font-size:.7rem}.is-top .rank-num{color:var(--gold)}.rank-item.is-second{border-color:var(--silver);box-shadow:0 0 0 1px var(--silver) inset}.is-second .rank-num{color:var(--silver)}.rank-item.is-third{border-color:var(--bronze);box-shadow:0 0 0 1px var(--bronze) inset}.is-third .rank-num{color:var(--bronze)}.rank-provider{color:var(--text);font-size:1.05rem;font-weight:700;text-decoration:none}.rank-provider:hover{text-decoration:underline}.rank-plan{color:var(--muted);font-size:.9rem}.rank-fees{color:var(--muted);margin-top:4px;font-size:.8rem}.rank-cap{color:var(--text);margin-left:6px;font-weight:700}.rank-price{text-align:right;white-space:nowrap}.rank-price .yen{font-size:1.4rem;font-weight:800}.rank-price .unit{color:var(--muted);margin-left:2px;font-size:.8rem}.rank-price .src{font-size:.8rem}.tags{flex-wrap:wrap;gap:4px;margin-top:4px;display:flex}.tag{background:var(--bg);border:1px solid var(--border);color:var(--muted);border-radius:999px;padding:1px 8px;font-size:.72rem}.tag-warn{background:var(--warn-weak);border-color:var(--warn);color:var(--warn)}.empty{background:var(--surface);border-radius:var(--radius);padding:16px}@media (width<=520px){.rank-item{grid-template-columns:44px 1fr;gap:10px;padding:12px 14px}.rank-num{grid-row:1/span 2;font-size:1.2rem}.rank-price{text-align:left;grid-column:2;align-items:baseline;gap:12px;display:flex}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin:12px 0;padding:16px 20px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.95rem}th,td{border-bottom:1px solid var(--border);text-align:left;vertical-align:top;padding:8px 10px}th{color:var(--muted);font-size:.85rem;font-weight:600}td.num{text-align:right;white-space:nowrap;font-weight:700}details summary{cursor:pointer;color:var(--muted);font-size:.85rem}.notice{border-radius:var(--radius);background:var(--gold-weak);border:1px solid var(--border);padding:12px 16px;font-size:.9rem}