/* Layout: 白物家電の取扱説明書と省エネラベルを下敷きにした、罫線とラベル中心の誌面 */
:root{
  --bg:#f6f8f6; --surface:#ffffff; --ink:#14232a; --muted:#566a72; --line:#d3dde0;
  --ai:#00532a; --ai-soft:#e4f0e8; --label:#f7c21a; --label-ink:#2a2200; --pr:#7a5b00; --on-ai:#ffffff;
  --f-display:"Zen Kaku Gothic New","Hiragino Sans","Yu Gothic",sans-serif;
  --f-body:"Zen Kaku Gothic New","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;
  --f-num:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0f1a14; --surface:#16241b; --ink:#e4eef1; --muted:#9db2ba; --line:#2a3d45;
  --ai:#7fcf9c; --ai-soft:#183a26; --label:#e8b923; --label-ink:#221b00; --pr:#e8c766; --on-ai:#0f1a14; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f1a14; --surface:#16241b; --ink:#e4eef1; --muted:#9db2ba; --line:#2a3d45;
  --ai:#7fcf9c; --ai-soft:#183a26; --label:#e8b923; --label-ink:#221b00; --pr:#e8c766; --on-ai:#0f1a14; color-scheme:dark}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.85;margin:0}
.wrap{max-width:1080px;margin:0 auto;padding-inline:20px}
a{color:var(--ai)}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;line-height:1.35;margin:0}
.num{font-family:var(--f-num);font-variant-numeric:tabular-nums}

.prbar{background:var(--surface);border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.prbar .wrap{display:flex;gap:10px;align-items:center;padding-block:6px}
.prtag{border:1px solid var(--pr);color:var(--pr);font-weight:700;padding:0 6px;border-radius:3px;letter-spacing:.08em;flex:none}

header.site{border-bottom:3px solid var(--ink)}
header.site .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px 24px;padding-block:18px}
.logo{font-family:var(--f-display);font-weight:900;font-size:26px;letter-spacing:.04em;color:var(--ink);text-decoration:none}
.logo{display:flex;align-items:flex-end;gap:6px;flex-wrap:wrap}
.logo .suffix{font-weight:900;font-size:24px;color:var(--ai);letter-spacing:.06em;line-height:1;padding-bottom:6px}
.logo img{display:block;height:64px;width:auto;max-width:100%;border-radius:4px}
.logo small{display:block;font-size:11px;font-weight:500;letter-spacing:.2em;color:var(--muted)}
nav.main{display:flex;flex-wrap:wrap;gap:4px 18px;font-size:14px;font-weight:500}
nav.main a{color:var(--ink);text-decoration:none}
nav.main a:hover,nav.main a:focus-visible{color:var(--ai);text-decoration:underline}

.hero{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;padding-block:48px 40px;align-items:center}
.hero h1{font-size:clamp(28px,4.6vw,46px);font-weight:900;letter-spacing:.01em}
.hero h1 em{font-style:normal;background:linear-gradient(transparent 62%,var(--label) 62%);color:var(--ink)}
.hero p{color:var(--muted);max-width:34em;margin:18px 0 0}
.eco{border:2px solid var(--ink);background:var(--surface);padding:18px 20px;display:grid;gap:10px}
.eco .tag{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:700;letter-spacing:.12em}
.eco .tag span:first-child{background:var(--ink);color:var(--bg);padding:2px 8px}
.eco .big{font-size:40px;font-weight:500;line-height:1}
.eco .big small{font-size:14px;margin-left:4px;font-family:var(--f-body)}
.eco dl{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:0;font-size:13px}
.eco dt{color:var(--muted)} .eco dd{margin:0;text-align:right}
.eco .note{font-size:11px;color:var(--muted);border-top:1px dashed var(--line);padding-top:8px}

section{padding-block:40px;border-top:1px solid var(--line)}
.sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:6px 20px;margin-bottom:22px}
.sec-head h2{font-size:24px;font-weight:900}
.sec-head p{margin:0;color:var(--muted);font-size:13px}
.eyebrow{font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--ai);display:block;margin-bottom:4px}

.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cat{background:var(--surface);padding:16px 18px;text-decoration:none;color:var(--ink);display:grid;gap:2px;min-width:0}
.cat:hover,.cat:focus-visible{background:var(--ai-soft);outline:none}
.cat b{font-size:17px}
.cat span{font-size:12px;color:var(--muted)}
.cat .num{font-size:11px;color:var(--ai);margin-top:6px}

.season{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.feature{background:var(--ai);color:var(--on-ai);padding:26px;display:grid;gap:12px;align-content:start}
.feature .eyebrow{color:var(--on-ai);opacity:.75}
.feature h3{font-size:22px;color:var(--on-ai)}
.feature p{margin:0;font-size:14px;opacity:.92}
.feature ul{margin:0;padding-left:1.2em;font-size:14px}
.list{display:grid;gap:0;border-top:1px solid var(--line)}
.post{display:grid;grid-template-columns:72px 1fr;gap:14px;padding-block:14px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}
.post .kind{font-size:11px;font-weight:700;color:var(--ai);border:1px solid var(--ai);text-align:center;align-self:start;padding:2px 0}
.post b{display:block;font-size:15px;line-height:1.55}
.post span{font-size:12px;color:var(--muted)}

.sim{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.form{display:grid;gap:14px;background:var(--surface);border:1px solid var(--line);padding:22px}
.field{display:grid;gap:4px}
.field label{font-size:13px;font-weight:700}
.field .hint{font-size:11px;color:var(--muted)}
.field input,.field select{font:inherit;font-family:var(--f-num);padding:8px 10px;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:2px;width:100%}
.field input:focus-visible,.field select:focus-visible{outline:2px solid var(--ai);outline-offset:1px}
.result{border:2px solid var(--ink);background:var(--surface)}
.result .row{display:flex;justify-content:space-between;align-items:baseline;padding:14px 20px;border-bottom:1px solid var(--line);gap:12px}
.result .row:last-child{border-bottom:0}
.result .row span{font-size:13px;color:var(--muted)}
.result .row b{font-size:26px;font-weight:500}
.result .row.main{background:var(--label);color:var(--label-ink)}
.result .row.main span{color:var(--label-ink)}
.result .row.main b{font-size:34px}

.pbox{border:1px solid var(--line);background:var(--surface);display:grid;grid-template-columns:140px 1fr;gap:20px;padding:20px;position:relative}
.sample{position:absolute;top:-10px;right:14px;background:var(--pr);color:var(--bg);font-size:11px;font-weight:700;padding:1px 8px;letter-spacing:.1em}
.pimg{aspect-ratio:1;max-width:100%;background:repeating-linear-gradient(45deg,var(--ai-soft) 0 8px,transparent 8px 16px);border:1px solid var(--line);display:grid;place-items:center;font-size:12px;color:var(--muted)}
.pbox h3{font-size:18px}
.spec{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 12px}
.spec span{font-size:12px;border:1px solid var(--line);padding:1px 8px;font-family:var(--f-num)}
.shops{display:flex;flex-wrap:wrap;gap:8px}
.shops a{font-size:13px;font-weight:700;text-decoration:none;padding:7px 16px;border-radius:2px;color:#fff}
.shops .amz{background:#b85c00}.shops .rkt{background:#a3001a}.shops .yhs{background:#3a3fa8}
.shops a:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.pbox .src{font-size:11px;color:var(--muted);margin-top:10px}

.policy{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.policy div{display:grid;gap:6px;align-content:start}
.policy h3{font-size:15px}
.policy p{margin:0;font-size:13px;color:var(--muted)}

footer{background:var(--ink);color:var(--bg);font-size:12px}
footer .wrap{padding-block:28px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between}
footer a{color:var(--bg)}

@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .logo img{background:#f6f8f6;padding:4px 8px}}
:root[data-theme="dark"] .logo img{background:#f6f8f6;padding:4px 8px}
@media (max-width:820px){
  .hero,.season,.sim,.policy{grid-template-columns:1fr}
  .cats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:460px){
  .pbox{grid-template-columns:1fr}.pimg{max-width:160px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

body{margin:0}img{max-width:100%}
/* sub pages */
.doc{max-width:760px;padding-block:40px 64px}
.doc h1{font-size:clamp(24px,3.4vw,32px);font-weight:900;margin-bottom:8px}
.doc .lead{color:var(--muted);margin:0 0 28px}
.doc h2{font-size:18px;font-weight:700;margin:36px 0 10px;padding-left:10px;border-left:4px solid var(--ai)}
.doc p,.doc li{max-width:42em}
.doc ul{padding-left:1.3em}
.doc .note{font-size:13px;color:var(--muted)}
.doc table{border-collapse:collapse;width:100%;max-width:640px;background:var(--surface)}
.doc th,.doc td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.doc th{width:9em;background:var(--ai-soft);font-weight:700;white-space:nowrap}
.btn{display:inline-block;background:var(--ai);color:var(--on-ai);font-weight:700;text-decoration:none;padding:12px 28px;border-radius:3px}
.btn:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
footer nav{display:flex;flex-wrap:wrap;gap:4px 16px}
footer .amz{flex-basis:100%;opacity:.8}

/* articles */
.crumbs{font-size:12px;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--muted)}
.art h1{font-size:clamp(22px,3.2vw,30px);line-height:1.45}
.art .meta{display:flex;flex-wrap:wrap;gap:4px 16px;font-size:12px;color:var(--muted);margin:10px 0 18px}
.art .meta .pr{border:1px solid var(--pr);color:var(--pr);font-weight:700;padding:0 6px;border-radius:3px}
.art .lead{font-size:16px;color:var(--ink);margin:0 0 18px}
.art strong{background:linear-gradient(transparent 64%,var(--label) 64%);color:var(--ink)}
.points{border:2px solid var(--ink);background:var(--surface);padding:14px 18px;margin:0 0 8px}
.points b{display:block;font-size:13px;letter-spacing:.12em;margin-bottom:4px}
.points ul{margin:0;padding-left:1.2em}
.art h3{font-size:16px;margin:24px 0 6px}
.tbl{overflow-x:auto;margin:12px 0}
.tbl table{min-width:480px;max-width:none;font-size:14px}
.tbl td.num{font-family:var(--f-num);font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl thead th{width:auto;background:var(--ink);color:var(--bg);font-size:13px}
.tbl .sub{font-size:12px;color:var(--muted)}
.calc{background:var(--ai-soft);padding:14px 18px;margin-top:32px;font-size:13px}
.calc ul{margin:6px 0 0;padding-left:1.2em}
.sources{font-size:12px;color:var(--muted);margin-top:28px}
.sources ol{padding-left:1.4em}
.sources a{color:var(--muted);word-break:break-all}
.related{margin-top:36px;border-top:1px solid var(--line);padding-top:8px}
.related .post{grid-template-columns:72px 1fr}

a.feature{text-decoration:none}
a.feature:hover h3,a.feature:focus-visible h3{text-decoration:underline}
div.cat{opacity:.7}
.tbl thead .sub{color:var(--bg);opacity:.8}