:root{
  --bg:#f7fafb; --surface:#fff; --ink:#1b2a33; --muted:#5b6b75; --line:#dde6ea;
  --accent:#1f7a9c; --accent-soft:#e3f1f6;
  --lv-very_soft:#3f9fc4; --lv-soft:#2f8a7e; --lv-moderate:#b08a2e; --lv-hard:#c0662b; --lv-very_hard:#a8402f;
  --radius:12px;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0f1719; --surface:#172226; --ink:#e4ecef; --muted:#9aabb3; --line:#27363b;
  --accent:#5fb8d8; --accent-soft:#1a3038;
  --lv-very_soft:#6cc0e0; --lv-soft:#5bb8a9; --lv-moderate:#d6b05a; --lv-hard:#e08a55; --lv-very_hard:#e0715f;
}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic UI",sans-serif;line-height:1.8;font-size:16px;-webkit-text-size-adjust:100%}
a{color:var(--accent)}
.wrap{max-width:860px;margin:0 auto;padding:0 16px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.site-header{background:var(--surface);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{font-weight:700;text-decoration:none;color:var(--ink);display:flex;align-items:center;gap:8px}
.drop{width:14px;height:18px;background:var(--accent);border-radius:50% 50% 50% 50%/60% 60% 40% 40%;transform:rotate(180deg)}
.site-header nav a{margin-left:16px;font-size:14px;text-decoration:none;color:var(--muted)}
.pr-notice{font-size:12px;color:var(--muted);margin-top:8px}
main{padding-bottom:48px}
h1{font-size:28px;line-height:1.4;margin:.4em 0}
h2{font-size:20px;margin:2em 0 .6em;padding-bottom:6px;border-bottom:2px solid var(--line)}
h3{font-size:16px;margin:0 0 .3em}
.crumbs{font-size:13px;color:var(--muted);margin-top:16px}
.eyebrow{margin:16px 0 0;color:var(--muted);font-size:14px}
.hero{margin-top:8px}
.hero-top h1{font-size:30px;margin-top:32px}
.lead{color:var(--ink)}
.note{font-size:13px;color:var(--muted)}
.big-number{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:8px 0}
.big-number .num{font-size:56px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}
.big-number .unit{font-size:18px;color:var(--muted)}
.badge{font-size:14px;font-weight:700;padding:2px 10px;border-radius:999px;color:#fff;background:var(--c,var(--accent));align-self:center}
.lv-very_soft{--c:var(--lv-very_soft)}.lv-soft{--c:var(--lv-soft)}.lv-moderate{--c:var(--lv-moderate)}.lv-hard{--c:var(--lv-hard)}.lv-very_hard{--c:var(--lv-very_hard)}
.big-number .num{color:var(--c)}
.gauge{margin:20px 0 8px}
.gauge-bar{position:relative;display:flex;height:12px;border-radius:6px;overflow:visible}
.zone{flex:1;height:100%}
.z1{flex:6;background:var(--lv-soft);opacity:.35;border-radius:6px 0 0 6px}.z2{flex:6;background:var(--lv-moderate);opacity:.35}.z3{flex:6;background:var(--lv-hard);opacity:.35}.z4{flex:2;background:var(--lv-very_hard);opacity:.35;border-radius:0 6px 6px 0}
.gauge-pin{position:absolute;top:-6px;width:24px;height:24px;margin-left:-12px;border-radius:50%;background:var(--c,var(--accent));border:3px solid var(--surface);box-shadow:0 1px 4px rgba(0,0,0,.25)}
.hero .gauge-pin{background:var(--accent)}
.gauge-median{position:absolute;top:-4px;bottom:-4px;width:2px;background:var(--ink);opacity:.5}
.gauge-scale,.gauge-labels{position:relative;display:grid;grid-template-columns:6fr 6fr 6fr 2fr 0fr;font-size:11px;color:var(--muted);margin-top:4px}
.gauge-labels{grid-template-columns:6fr 6fr 6fr 2fr;font-size:12px}
.gauge-scale span:last-child{text-align:right;white-space:nowrap}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:640px){.cards{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.card p{margin:0;font-size:15px}
.cards .ad{grid-column:1/-1}
.ad{position:relative;background:var(--accent-soft);border-radius:var(--radius);padding:16px 16px 16px;margin:16px 0}
.ad-label{position:absolute;top:10px;right:12px;font-size:11px;font-weight:700;color:var(--muted);border:1px solid var(--muted);border-radius:4px;padding:0 5px}
.ad-title{font-weight:700;margin:0 0 4px}
.ad-text{margin:0 0 10px;font-size:14px}
.ad-cta{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:8px 16px;border-radius:8px;font-weight:700;font-size:14px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:var(--surface);font-size:14px}
th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
td small{display:block;color:var(--muted)}
.num{text-align:right;font-variant-numeric:tabular-nums}
.rows{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;padding:0;margin:0;list-style:none}
.row{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line)}
.rows>.row:last-child,.rows li:last-child .row{border-bottom:0}
.row:hover{background:var(--accent-soft)}
.row-name small{color:var(--muted);margin-left:8px;font-size:12px}
.row-val{font-weight:700;color:var(--c);font-variant-numeric:tabular-nums}
.row-val small{font-weight:400;font-size:11px;margin-left:2px;color:var(--muted)}
.ranked{counter-reset:r}
.ranked li{counter-increment:r;position:relative}
.ranked li .row{padding-left:44px}
.ranked li::before{content:counter(r);position:absolute;left:14px;top:10px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:640px){.two-col{grid-template-columns:1fr}}
.pref-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}
.pref{display:flex;justify-content:space-between;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--c);border-radius:8px;padding:8px 10px;text-decoration:none;color:var(--ink);font-size:14px}
.pref b{color:var(--c);font-variant-numeric:tabular-nums}
.levels{margin:0;display:grid;gap:8px}
.levels div{background:var(--surface);border-left:4px solid var(--c);padding:8px 12px;border-radius:6px}
.levels dt{font-weight:700;color:var(--c)}.levels dd{margin:0;font-size:14px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin-bottom:8px}
.faq summary{font-weight:700;cursor:pointer}
.search{position:relative;margin:20px 0}
.search input{width:100%;font-size:16px;padding:14px 16px;border:2px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--ink)}
.search input:focus{outline:none;border-color:var(--accent)}
.search-results{position:absolute;z-index:5;left:0;right:0;margin:4px 0 0;padding:0;list-style:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 6px 20px rgba(0,0,0,.12);max-height:320px;overflow:auto}
.search-results a{display:flex;justify-content:space-between;padding:10px 14px;text-decoration:none;color:var(--ink)}
.search-results a:hover,.search-results a:focus{background:var(--accent-soft)}
.search-results small{color:var(--muted)}
.site-footer{border-top:1px solid var(--line);background:var(--surface);font-size:12px;color:var(--muted);padding:20px 0}
.site-footer p{margin:.4em 0}