:root{
  --bg:#f6f4ef; --surface:#ffffff; --ink:#15130f; --ink-2:#3a362f; --muted:#7a746a; --line:#e5e0d6; --line-2:#efebe3;
  --accent:#e8541e; --accent-soft:#fde9df; --star:#f2a516; --thumb:#ece7dd;
  --radius:22px; --radius-sm:14px; --gutter:16px; --max:1120px; --read:700px;
  --sans:"Inter","Noto Sans JP",system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#12110e; --surface:#1b1916; --ink:#f3efe7; --ink-2:#d7d1c6; --muted:#9d968a; --line:#2e2b26; --line-2:#24221e;
  --accent:#ff6a33; --accent-soft:#3a2118; --thumb:#24211c;
}}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.9;
  font-feature-settings:"palt";letter-spacing:.02em;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.read{max-width:var(--read);margin:0 auto;padding:0 var(--gutter)}

/* header */
.hd{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.hd .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:15px;letter-spacing:.04em}
.logo svg{width:26px;height:26px;color:var(--accent)}
.nav{display:flex;gap:18px;font-size:13px;color:var(--muted)}
.nav a{text-decoration:none}.nav a:hover{color:var(--ink)}
@media (max-width:520px){.nav .hide-sp{display:none}}

/* home hero */
.hero{padding:56px 0 36px}
.eyebrow{font:600 12px/1 var(--sans);letter-spacing:.18em;text-transform:uppercase;color:var(--accent)}
.hero h1{font-size:clamp(32px,7.4vw,64px);line-height:1.22;letter-spacing:-.01em;font-weight:900;margin:18px 0 18px}
.hero p{max-width:560px;color:var(--ink-2);margin:0;font-size:15px}
.sec-title{display:flex;align-items:baseline;justify-content:space-between;margin:40px 0 18px;border-top:1px solid var(--ink);padding-top:14px}
.sec-title h2{font-size:14px;letter-spacing:.14em;margin:0}
.sec-title span{font-size:12px;color:var(--muted)}

/* cards */
.grid{display:grid;gap:28px 22px;grid-template-columns:1fr}
@media (min-width:640px){.grid{grid-template-columns:1fr 1fr}}
@media (min-width:980px){.grid{grid-template-columns:repeat(3,1fr)}}
.card{display:block;text-decoration:none;color:inherit}
.thumb{aspect-ratio:4/3;border-radius:var(--radius);background:var(--thumb);overflow:hidden;display:grid;place-items:center;position:relative}
.thumb img{width:62%;height:62%;object-fit:contain;mix-blend-mode:multiply;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
@media (prefers-color-scheme:dark){.thumb img{mix-blend-mode:normal;border-radius:12px}}
.card:hover .thumb img{transform:scale(1.05)}
.tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.08em;padding:4px 10px;border-radius:99px;background:var(--surface);border:1px solid var(--line)}
.thumb .tag{position:absolute;left:14px;top:14px}
.card h3{font-size:17px;line-height:1.55;margin:14px 0 6px;font-weight:700}
.card time{font:500 12px/1 var(--sans);color:var(--muted);letter-spacing:.06em}
.feature{display:grid;gap:22px;align-items:center;margin-bottom:12px}
@media (min-width:860px){.feature{grid-template-columns:1.25fr 1fr;gap:44px}}
.feature .thumb{aspect-ratio:16/11}
.feature h3{font-size:clamp(22px,4.4vw,32px);line-height:1.4;margin:12px 0 12px}
.feature p{color:var(--ink-2);font-size:14px;margin:0 0 14px}
.empty{color:var(--muted);padding:40px 0}

/* article */
.art-head{padding:36px 0 8px}
.crumb{font-size:12px;color:var(--muted);margin-bottom:18px}
.crumb a{text-decoration:none}
.art-head h1{font-size:clamp(26px,6.2vw,40px);line-height:1.38;letter-spacing:-.005em;font-weight:900;margin:14px 0 18px}
.meta{display:flex;flex-wrap:wrap;gap:6px 16px;font:500 12px/1.6 var(--sans);color:var(--muted);letter-spacing:.04em}
.lead{color:var(--ink-2);font-size:15px;margin:18px 0 0}
.pr{margin:22px 0 0;padding:12px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:12px;line-height:1.7;color:var(--muted);background:var(--surface)}
.pr b{display:inline-block;font-size:10px;letter-spacing:.14em;color:var(--ink);border:1px solid var(--ink);border-radius:4px;padding:0 6px;margin-right:8px}

.toc{margin:28px 0 8px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:6px 20px}
.toc summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;padding:12px 0;font-weight:700;font-size:14px;letter-spacing:.08em}
.toc summary::-webkit-details-marker{display:none}
.toc summary::after{content:"";width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg) translateY(-3px);transition:transform .2s}
.toc[open] summary::after{transform:rotate(-135deg)}
.toc ol{list-style:none;margin:0 0 12px;padding:0;counter-reset:t}
.toc li{counter-increment:t;border-top:1px solid var(--line-2)}
.toc a{display:flex;gap:14px;padding:11px 0;text-decoration:none;font-size:14px;line-height:1.6}
.toc a::before{content:counter(t,decimal-leading-zero);font:700 12px/1.9 var(--sans);color:var(--accent)}

.prose{padding:8px 0 40px;overflow-wrap:anywhere}
.prose p{margin:0 0 1.35em}
.prose h2{font-size:clamp(21px,4.8vw,26px);line-height:1.5;margin:2.6em 0 1em;padding-top:1.1em;border-top:1px solid var(--line);font-weight:800}
.prose h2 .n{display:block;font:700 12px/1 var(--sans);letter-spacing:.16em;color:var(--accent);margin-bottom:12px}
.prose h3{font-size:18px;line-height:1.55;margin:2em 0 .7em;font-weight:700}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.4em}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--accent)}
.prose strong{background:linear-gradient(transparent 62%,var(--accent-soft) 62%);font-weight:700}
.prose blockquote{margin:1.6em 0;padding:4px 0 4px 18px;border-left:3px solid var(--accent);color:var(--ink-2)}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

.table-wrap{margin:1.4em 0 1.8em;overflow-x:auto;-webkit-overflow-scrolling:touch;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm)}
.table-wrap table{border-collapse:separate;border-spacing:0;min-width:600px;width:100%;font-size:13px;line-height:1.6}
.table-wrap th,.table-wrap td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line-2);min-width:96px}
.table-wrap tr:last-child td{border-bottom:0}
.table-wrap th{font-size:11px;letter-spacing:.08em;color:var(--muted);font-weight:700;background:var(--surface);white-space:nowrap}
.table-wrap td:first-child,.table-wrap th:first-child{position:sticky;left:0;z-index:1;background:var(--surface);font-weight:700;min-width:150px;box-shadow:1px 0 0 var(--line)}
.scroll-hint{font-size:11px;color:var(--muted);margin:-1.2em 0 1.8em;text-align:right}
.scroll-hint::after{content:" →"}
@media (min-width:720px){.scroll-hint{display:none}}

/* product */
.pd{display:grid;grid-template-columns:104px 1fr;grid-template-areas:"img info" "btns btns";gap:16px;margin:1.4em 0 2em;padding:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
@media (min-width:600px){.pd{grid-template-columns:168px 1fr;grid-template-areas:"img info" "img btns";padding:22px;gap:14px 24px}}
.pd-img{grid-area:img;align-self:start}.pd-info{grid-area:info;min-width:0}.btns{grid-area:btns}
.pd-img{position:relative;aspect-ratio:1;border-radius:var(--radius-sm);background:var(--thumb);display:grid;place-items:center;overflow:hidden}
.pd-img img{width:78%;height:78%;object-fit:contain;mix-blend-mode:multiply}
@media (prefers-color-scheme:dark){.pd-img img{mix-blend-mode:normal}}
.pd-no{position:absolute;left:6px;top:6px;font:800 9px/1 var(--sans);letter-spacing:.1em;background:var(--ink);color:var(--bg);padding:4px 6px;border-radius:5px}
@media (min-width:600px){.pd-no{left:10px;top:10px;font-size:11px;padding:6px 8px}}
.pd-name{font-size:15px;font-weight:700;line-height:1.55;margin:0 0 4px}
.pd-shop{font-size:12px;color:var(--muted);margin:0 0 10px;line-height:1.5}
.pd-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin-bottom:10px}
.price{font:800 22px/1 var(--sans);letter-spacing:-.01em}
.price small{font-size:12px;font-weight:600;margin-left:2px}
.rate{display:flex;align-items:center;gap:8px;font:600 13px/1 var(--sans)}
.stars{position:relative;display:inline-block;font-size:14px;letter-spacing:1px;line-height:1;color:var(--line)}
.stars i{position:absolute;inset:0 auto 0 0;overflow:hidden;white-space:nowrap;font-style:normal;color:var(--star)}
.rate span{color:var(--muted);font-weight:500}
.pd-note{font-size:11px;color:var(--muted);margin:-4px 0 0;line-height:1.6}
.btns{display:grid;gap:10px}
@media (min-width:600px){.btns{grid-template-columns:1fr 1fr;align-self:end}}
.btn{display:flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 18px;border-radius:99px;text-decoration:none;font-weight:700;font-size:14px;letter-spacing:.04em;transition:transform .15s,opacity .15s}
.btn:active{transform:scale(.98)}
.btn svg{width:14px;height:14px}
.btn-main{background:var(--ink);color:var(--bg)}
.btn-main:hover{opacity:.88}
.btn-sub{border:1.5px solid var(--ink);color:var(--ink)}
.btn-sub:hover{background:var(--ink);color:var(--bg)}
.btn .src{font-size:10px;font-weight:600;opacity:.6;letter-spacing:.1em}

/* related + footer */
.related{padding:24px 0 64px}
.ft{border-top:1px solid var(--line);padding:40px 0 48px;font-size:12px;color:var(--muted);line-height:1.8}
.ft .wrap{display:grid;gap:18px}
.ft nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.ft a{text-decoration:none}.ft a:hover{color:var(--ink)}
.page{padding:40px 0 64px}
.page h1{font-size:clamp(26px,6vw,36px);line-height:1.4;margin:0 0 28px;font-weight:900}
/* about */
.ab{padding-bottom:72px}
.ab-hero{padding:48px 0 28px}
.ab-hero h1{font-size:clamp(28px,6.8vw,44px);line-height:1.35;font-weight:900;letter-spacing:-.005em;margin:18px 0 20px}
.ab-hero .lead{font-size:15px;color:var(--ink-2);margin:0}
br.sp{display:none}@media (max-width:520px){br.sp{display:inline}}
.ab-dogs{display:grid;gap:12px;grid-template-columns:1fr;margin:8px 0 12px}
@media (min-width:560px){.ab-dogs{grid-template-columns:1fr 1fr}}
.ab-dog{display:flex;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.ab-mono{flex:0 0 60px;height:60px;border-radius:50%;display:grid;place-items:center;font-size:24px;font-weight:900}
.ab-mono-0{background:var(--accent-soft);color:var(--accent)}
.ab-mono-1{background:var(--ink);color:var(--bg)}
.ab-dog p{margin:0}
.ab-dog-name{font-size:20px;font-weight:900;line-height:1.3}
.ab-dog-breed{font-size:12px;color:var(--muted);line-height:1.6;margin-top:2px!important}
.ab-dog-age{display:flex;flex-wrap:wrap;gap:2px 10px;font:500 12px/1.6 var(--sans);color:var(--muted);margin-top:6px!important}
.ab-dog-age b{color:var(--ink);font-weight:700}
.ab-sec{padding-top:44px;margin-top:44px;border-top:1px solid var(--line)}
.ab-label{font:700 11px/1 var(--sans);letter-spacing:.16em;color:var(--accent);margin:0 0 14px;text-transform:uppercase}
.ab-sec h2{font-size:clamp(21px,5vw,27px);line-height:1.45;font-weight:800;margin:0 0 18px}
.ab-sec p{margin:0 0 1.2em}
.ab-steps{list-style:none;margin:8px 0 20px;padding:0}
.ab-steps li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line-2)}
.ab-steps li:first-child{padding-top:4px}
.ab-step-no{flex:0 0 26px;font:800 13px/1.9 var(--sans);color:var(--accent);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.ab-steps p{margin:0;font-size:14px;color:var(--ink-2)}
.ab-steps .ab-step-t{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
.ab-note{background:var(--accent-soft);border-radius:var(--radius-sm);padding:16px 18px;font-size:14px}
.ab-note p{margin:0}
.ab-cards{display:grid;gap:12px;grid-template-columns:1fr}
@media (min-width:640px){.ab-cards{grid-template-columns:repeat(3,1fr)}}
.ab-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.ab-card p{margin:0;font-size:13px;line-height:1.8;color:var(--ink-2)}
.ab-card .ab-card-t{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:8px}
.ab-dl{margin:0;border-top:1px solid var(--line)}
.ab-dl div{display:grid;grid-template-columns:7.5em 1fr;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
.ab-dl dt{color:var(--muted);font-size:12px;letter-spacing:.06em;padding-top:2px}
.ab-dl dd{margin:0}
.ab-updated{font:500 12px/1 var(--sans);color:var(--muted);letter-spacing:.04em;margin-top:24px!important}