:root{--bg:#F7F3EC;--surface:#FFFFFF;--ink:#2B2A28;--muted:#6A645B;--line:#E6DFD3;--cheap:#2F6B55;--cheap-bg:#E7F0EA;--cta:#B4583A;--cta-fg:#FFFFFF;--pr-bg:#F3EADB;--pr-fg:#4A3A22;--rank-accent:#A8834A;--font-head:"Zen Kaku Gothic New","Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;--font-body:system-ui,-apple-system,"Hiragino Sans","Noto Sans JP","Yu Gothic",Meiryo,sans-serif}
@media (prefers-color-scheme:dark){:root{--bg:#1A1917;--surface:#23221F;--ink:#EEE9E1;--muted:#B1A99D;--line:#3A3732;--cheap:#8FD1B0;--cheap-bg:#22362C;--cta:#E39A7C;--cta-fg:#1A1917;--pr-bg:#3A3124;--pr-fg:#F4DFBC;--rank-accent:#CDAE7A}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.8;overflow-wrap:anywhere}
@media (min-width:720px){body{font-size:17px}}
img,svg{max-width:100%}
a{color:inherit;text-decoration-color:var(--rank-accent);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:2px solid var(--rank-accent);outline-offset:2px}

/* legal display: same size as the body text (no font-size here on purpose) */
.pr{background:var(--pr-bg);color:var(--pr-fg);font-weight:500;line-height:1.6;padding:10px max(16px,calc((100% - 800px)/2 + 16px));border-bottom:1px solid var(--line)}
.scope{color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:16px 0;line-height:1.7}
.note{color:var(--muted);line-height:1.7}
.when{color:var(--ink);margin:4px 0 0;font-variant-numeric:tabular-nums}

header.site,main,footer{max-width:800px;margin:0 auto;padding-left:16px;padding-right:16px}
header.site{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-head);font-weight:700;font-size:1.2rem;letter-spacing:.04em;text-decoration:none}
.brand .icon{color:var(--rank-accent)}
header.site nav a{color:var(--muted);text-decoration:none}
nav.crumbs{color:var(--muted);margin-top:12px;line-height:1.6}
nav.crumbs a{color:var(--muted)}

h1,h2,h3{font-family:var(--font-head);font-weight:700;line-height:1.45;letter-spacing:.02em}
h1{font-size:1.5rem;margin:24px 0 12px}
h2{font-size:1.25rem;margin:48px 0 12px}
h2::after{content:"";display:block;width:32px;height:1.5px;margin-top:8px;background:var(--rank-accent)}
h3{font-size:1.06rem;font-weight:500;margin:32px 0 8px}
@media (min-width:720px){h1{font-size:1.75rem}h2{font-size:1.4rem}}
blockquote{margin:16px 0;padding:4px 16px;border-left:2px solid var(--line);color:var(--muted)}
ul,ol{padding-left:1.4em}
.icon{display:inline-block;width:24px;height:24px;flex:none;vertical-align:middle}
.icon svg{display:block;width:100%;height:100%}

/* numbers */
.unit-price{margin:0;font-size:30px;font-weight:700;line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:.01em}
.unit-price .u{font-size:.6em;margin-left:2px}
.label{margin:12px 0 0;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;line-height:1.5}
.sub{margin:4px 0 0;color:var(--muted);font-size:14px;line-height:1.6;font-variant-numeric:tabular-nums}
.badge{display:inline-block;padding:1px 8px;border-radius:6px;border:1px solid var(--line);font-size:14px;line-height:1.6;white-space:nowrap;color:var(--muted)}
.badge.cheap{background:var(--cheap-bg);color:var(--cheap);border-color:transparent;font-weight:700}

/* buttons */
.btn{display:flex;align-items:center;justify-content:center;gap:6px;min-height:48px;margin-top:12px;padding:0 20px;border-radius:999px;background:var(--cta);color:var(--cta-fg);font-weight:700;text-decoration:none;white-space:nowrap}
.btn .icon{width:16px;height:16px}
.btn-sm{display:inline-flex;min-height:40px;margin:0;padding:0 14px;font-size:14px}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}

/* ranking: cards for No.1-3 */
.lead{margin:16px 0 8px}
.saving{margin:16px 0 0;padding:10px 16px;border-radius:12px;background:var(--cheap-bg);color:var(--cheap);line-height:1.6}
.saving strong{font-variant-numeric:tabular-nums}
.saving-how{margin:8px 0 0;color:var(--ink)}
.cards{list-style:none;margin:16px 0;padding:0;display:grid;gap:12px}
@media (min-width:720px){.cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{position:relative;min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 16px 16px 20px;box-shadow:0 1px 3px rgba(43,42,40,.06)}
.card::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;background:var(--rank-accent)}
.card-head{display:grid;grid-template-columns:auto 80px minmax(0,1fr);gap:12px;align-items:start}
.rank{font-family:var(--font-head);font-weight:700;font-size:1.75rem;line-height:1;color:var(--rank-accent);font-variant-numeric:tabular-nums;min-width:1ch}
.thumb{display:flex;align-items:center;justify-content:center;width:80px;height:80px;padding:4px;border-radius:8px;background:#fff;border:1px solid var(--line);color:var(--muted)}
.thumb img{display:block;width:72px;height:72px;object-fit:contain}
.thumb .icon{width:40px;height:40px}
.name{margin:0;font-size:15px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.unit-help{margin:8px 0 0}
.to-table{margin:8px 0 0}

/* ranking: compact rows (narrow screens), full table (wide screens) */
.rank-list{list-style:none;margin:16px 0 0;padding:0;border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:2em minmax(0,1fr) auto;gap:4px 12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.row .rank{font-size:1.25rem;text-align:center}
.row-name{margin:0;font-size:15px;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row-price{margin:2px 0 0;font-size:20px;font-weight:700;line-height:1.3;font-variant-numeric:tabular-nums}
.row-price .u{font-size:.65em;margin-left:1px}
.row .when{margin:0}
details.more{margin:0}
details.more summary{cursor:pointer;padding:12px 0;font-weight:700;list-style-position:inside}
.only-wide{display:none}
@media (min-width:720px){.only-wide{display:block}.only-narrow{display:none}}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:16px 0;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:15px;line-height:1.55;font-variant-numeric:tabular-nums}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
tr:last-child td{border-bottom:0}
th{white-space:nowrap;font-weight:700;color:var(--muted);background:var(--bg)}
td.price{white-space:nowrap;font-weight:700}
td.num{white-space:nowrap;text-align:right}
td .btn{min-height:36px;margin:0;padding:0 14px;font-size:14px;display:inline-flex}

/* top page */
.hero{padding:8px 0 0}
.hero h1{margin-bottom:8px}
.lede{margin:0}
.updated{margin:8px 0 0;font-variant-numeric:tabular-nums}
.tops{list-style:none;margin:16px 0;padding:0;display:grid;gap:12px}
@media (min-width:720px){.tops{grid-template-columns:repeat(2,minmax(0,1fr))}}
.top-card{min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px}
.top-head{display:flex;align-items:center;gap:8px}
.top-head .icon{color:var(--rank-accent)}
.top-head h3{margin:0;font-size:1.06rem}
.cats{list-style:none;margin:16px 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (min-width:720px){.cats{grid-template-columns:repeat(3,minmax(0,1fr))}}
.cats a{display:flex;flex-direction:column;align-items:flex-start;gap:8px;height:100%;padding:16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);text-decoration:none;line-height:1.5;min-width:0}
.cats .icon{width:32px;height:32px;color:var(--rank-accent)}
.howto{margin:0;padding-left:1.4em}
ul.articles{list-style:none;padding:0}
ul.articles li{padding:12px 0;border-bottom:1px solid var(--line)}
dl.facts{display:grid;grid-template-columns:minmax(0,7em) minmax(0,1fr);gap:8px 16px;margin:16px 0}
dl.facts dt{color:var(--muted)}
dl.facts dd{margin:0}

footer{margin-top:64px;padding-top:24px;padding-bottom:32px;border-top:1px solid var(--line)}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 20px;margin-bottom:16px}
.foot-links a{color:var(--ink)}
footer p{margin:8px 0}