/* Sitwell 全站樣式：手機優先，桌機 900px 以上切版 */
:root{
  --fg:#222; --muted:#777; --light:#999; --line:#eee; --alt:#f7f7f5;
  --red:#e05a4e; --accent:#2B64BA; --accent-ink:#1F4E95; --tint:#EDF2FA; --accent-wash:rgba(43,100,186,.07);
  --gutter:16px; --max:1280px;
  --sans:"Noto Sans TC",-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:#fff;color:var(--fg);font-family:var(--sans);font-size:17px;line-height:1.7;font-weight:400;overflow-x:hidden}
h1,h2,h3,h4,h5,h6,b,strong,th,dt{font-weight:400}
h1,h2,h3,p,ul,figure{margin:0}
/* 標題、標語只在空白處斷行，不從詞中間拆開 */
h1,h2,h3,.tl{word-break:keep-all;overflow-wrap:normal}
ul{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
button{font:inherit;cursor:pointer;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
@media (min-width:900px){.wrap{padding-inline:clamp(24px,4vw,56px)}}
[id]{scroll-margin-top:80px}
#products,#stores,#faq{scroll-margin-top:96px}
#trial{scroll-margin-top:72px}

/* ---------- 區塊標題 ▍ ---------- */
.hd{display:flex;align-items:center;gap:12px;font-size:23px;line-height:1.3;font-weight:400;margin:48px 0 28px}
.hd::before{content:"";flex:none;width:3px;height:1.05em;background:var(--accent)}
.hd.sec{margin-top:72px}
@media (min-width:900px){.hd.sec{margin-top:96px}}
.note{font-size:13px;color:var(--light);text-align:right;margin-top:10px}

/* ---------- 導覽列 ---------- */
.top{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:10px}
/* 頁首橫式 logo 圖自帶藍條：手機高 28px、桌機 34px；滑過或鍵盤聚焦時上浮 2px、頁首 logo 淡到 .85；頁尾只上浮 */
.logo{position:relative;display:block;flex:none;line-height:0;text-decoration:none}
.logo img{height:28px;width:auto;max-width:none}
.top .logo:hover img,.top .logo:focus-visible img{opacity:.85}
@media (prefers-reduced-motion: no-preference){
  .logo{transition:transform .18s ease}
  .top .logo img{transition:opacity .18s ease}
  .logo:hover,.logo:focus-visible{transform:translateY(-2px)}
}
@media (min-width:900px){.nav{padding-block:12px}.logo img{height:34px}}
.burger{display:block;background:none;border:0;font-size:28px;line-height:1;padding:6px 4px}
.menu{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#fff;box-shadow:0 12px 24px rgba(0,0,0,.1);padding:6px 0;border-top:1px solid var(--line);max-height:calc(100vh - 70px);overflow-y:auto}
.nav.open .menu{display:flex}
.menu>li>a{display:flex;align-items:center;gap:6px;padding:13px 20px}
.chev{font-size:13px;opacity:.7;transition:transform .2s}
.dd{display:none;padding:0 0 8px 16px}
.has-dd.open .dd{display:block}
.has-dd.open .chev{transform:rotate(180deg)}
.dd a{display:flex;justify-content:space-between;align-items:center;padding:10px 20px;font-size:16px;color:#555}
.dd a[aria-current="page"]{color:var(--accent)}
.menu>li>a[aria-current="page"],.menu>li>a.on{color:var(--accent)}
.dd .arr,.store .arr{color:#8b939a;font-size:18px}
@media (min-width:900px){
  .burger{display:none}
  .menu{display:flex;position:static;flex-direction:row;align-items:center;gap:clamp(18px,2.6vw,40px);background:none;box-shadow:none;padding:0;border:0;max-height:none;overflow:visible}
  .menu>li{position:relative}
  .menu>li>a{position:relative;padding:8px 0}
  /* 導覽列底線：滑過或目前所在，品牌藍 2px */
  .menu>li>a::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left center;transition:transform .2s ease}
  .menu>li>a:hover::after,.has-dd:hover>a::after,.has-dd:focus-within>a::after,.menu>li>a[aria-current="page"]::after,.menu>li>a.on::after{transform:scaleX(1)}
  .menu>li>a[aria-current="page"],.menu>li>a.on{color:inherit}
  .dd{position:absolute;top:100%;left:-24px;min-width:230px;background:#fff;border-top:2px solid var(--accent);box-shadow:0 10px 28px rgba(20,30,45,.12);padding:6px 0;margin-top:10px}
  .dd::before{content:"";position:absolute;left:0;right:0;top:-14px;height:12px}
  .has-dd:hover .dd,.has-dd:focus-within .dd,.has-dd.open .dd{display:block}
  .dd a{padding:13px 24px;white-space:nowrap;color:var(--fg)}
  .dd a:hover{background:var(--tint)}
}

/* ---------- 共用按鈕、價格、色點 ---------- */
/* 主按鈕 .btn：品牌藍實心膠囊；次按鈕 .btn.o：品牌藍細框、透明底 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 28px;border-radius:999px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-size:17px;line-height:1.3;letter-spacing:.04em;text-align:center;transition:background-color .2s ease,border-color .2s ease,color .2s ease}
.btn:hover{background:var(--accent-ink);border-color:var(--accent-ink)}
.btn.o{background:transparent;color:var(--accent)}
.btn.o:hover{background:var(--accent-wash);color:var(--accent-ink);border-color:var(--accent-ink)}
.btns{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:900px){.btn{font-size:18px}}
.price{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 10px;font-variant-numeric:tabular-nums}
.price .now{color:var(--red);font-size:16px}
.price s{color:var(--light);font-size:13px}
.price.big .now{font-size:28px}
.price.big s{font-size:16px}
.price .off{font-size:13px;color:var(--red);border:1px solid var(--red);padding:0 6px;border-radius:2px}
.dots{display:flex;gap:8px;align-items:center}
.dot{display:inline-block;width:14px;height:14px;border-radius:50%;border:1px solid rgba(0,0,0,.18);flex:none}

/* ---------- 首頁 hero ---------- */
.hero{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;align-items:center;padding-block:36px 48px}
.hero .txt{display:flex;flex-direction:column;gap:18px;align-items:flex-start}
.brand-s{font-size:14px;letter-spacing:.2em;color:#888}
.hero h1{font-size:clamp(34px,6.4vw,64px);line-height:1.25;letter-spacing:.02em;font-weight:300}
/* 標題下品牌藍短條，呼應 logo 中間的藍條；與 .txt 的 gap 合計上 18px、下 22px */
.hero h1::after{content:"";display:block;width:56px;height:4px;background:var(--accent);margin:18px 0 4px}
.hero .sub{color:var(--muted);max-width:30em}
.hero .btns{margin-top:6px}
.hero-img{justify-self:center;width:min(100%,440px);background:#fff;padding:24px}
/* 椅子後方的淺藍圓：直徑約椅圖寬 85%，往右上偏；白底椅圖用 multiply 疊上，白色處透出圓色 */
.hero-fig{position:relative;width:-webkit-fit-content;width:fit-content;max-width:100%;margin:auto;isolation:isolate}
.hero-fig::before{content:"";position:absolute;z-index:-1;top:14%;right:-3%;width:85%;height:0;padding-bottom:85%;border-radius:50%;background:var(--tint)}
.hero-fig img{max-height:420px;width:auto;mix-blend-mode:multiply}
@media (min-width:900px){.hero{grid-template-columns:1fr 1fr;padding-block:72px 88px}.hero-fig img{max-height:480px}}

/* ---------- 首頁數字列 ---------- */
.nums{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-block:1px solid var(--line);padding-block:22px;text-align:center}
.nums li{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:0;padding-inline:4px}
.nums .n{font-size:clamp(40px,5.2vw,64px);font-weight:300;line-height:1.1;color:var(--accent);font-variant-numeric:tabular-nums}
.nums .c{font-size:14px;line-height:1.5;color:var(--muted);word-break:keep-all}
@media (min-width:900px){.nums{padding-block:34px}.nums .c{font-size:16px}}

/* ---------- 首頁產品卡：椅子置中在上，下方型號、標語、小標籤、價格、色點 ---------- */
.pgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (min-width:600px){.pgrid{gap:20px}}
@media (min-width:900px){.pgrid{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}}
.pcard{--pad:10px;display:flex;flex-direction:column;min-width:0;background:#fff;border:1px solid #eee;border-radius:14px;padding:16px var(--pad);transition:transform .25s ease,box-shadow .25s ease}
.pcard .ph{display:flex;justify-content:center;background:#fff;margin:0 calc(-1 * var(--pad)) 14px}
.pcard .ph img{width:72%;aspect-ratio:5/7;object-fit:contain;object-position:center bottom}
.pcard .md{font-size:18px;line-height:1.35}
.pcard .tl{font-size:14px;line-height:1.5;color:var(--muted);margin-top:4px}
/* 小標籤、價格、色點一起貼齊卡片底部，同一列卡片對齊 */
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:12px}
.chips li{white-space:nowrap;background:var(--tint);color:var(--accent);font-size:12px;line-height:1.2;padding:5px 8px;border-radius:999px}
.pcard .price{gap:0 6px;margin-top:12px}
.pcard .price>*{white-space:nowrap}
.pcard .price s{font-size:12px}
.pcard .dots{margin-top:10px}
@media (max-width:599px){.chips li:nth-child(n+3){display:none}}
@media (min-width:600px){.pcard{--pad:16px}}
@media (min-width:900px){
  .pcard{--pad:20px;padding-top:22px;padding-bottom:20px}
  .pcard .md{font-size:20px}
  .pcard .tl{font-size:15px}
  .chips li{font-size:13px;padding:5px 11px}
}
@media (min-width:900px) and (hover:hover){.pcard:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(0,0,0,.08)}}

/* ---------- 商品頁 ---------- */
.crumb{font-size:15px;color:var(--light);margin:24px 0 20px}
.crumb a:hover{color:var(--fg)}
.pd{display:grid;grid-template-columns:minmax(0,1fr);gap:28px}
@media (min-width:900px){.pd{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:56px;align-items:start}.crumb{margin-top:40px}}
.gal{display:flex;flex-direction:column;gap:12px;min-width:0}
.gal .main{order:-1;background:#fff;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;padding:6%;min-width:0}
.gal .main img{width:100%;height:100%;object-fit:contain}
.thcol{display:flex;align-items:center;gap:8px;min-width:0}
.thumbs{display:flex;gap:8px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;min-width:0;padding:2px}
.thumbs::-webkit-scrollbar{display:none}
.thumbs button{flex:none;width:64px;height:64px;padding:4px;background:#fff;border:1px solid #e6e6e6;scroll-snap-align:start;display:flex;align-items:center;justify-content:center}
.thumbs button img{width:100%;height:100%;object-fit:contain}
.thumbs button[aria-current="true"]{border-color:var(--fg);box-shadow:inset 0 0 0 1px var(--fg)}
.tharr{display:none;background:none;border:0;color:#666;font-size:24px;line-height:1;padding:4px 0;width:64px}
.tharr:hover{color:var(--fg)}
@media (min-width:900px){
  .gal{flex-direction:row;gap:16px;align-items:stretch}
  .thcol{flex-direction:column;width:64px;flex:none}
  .thumbs{flex-direction:column;overflow-y:auto;overflow-x:hidden;max-height:560px;scroll-snap-type:y mandatory;padding:0}
  .tharr{display:block}
  .gal .main{flex:1;order:0}
}
.buy h1{font-size:clamp(26px,3vw,32px);font-weight:400;line-height:1.3}
.buy .tl{color:var(--muted);margin-top:4px}
.buy .price{margin-top:16px}
.buy .row{display:flex;align-items:flex-start;gap:12px;padding-block:18px;border-top:1px solid var(--line);margin-top:22px}
.buy .lb{color:var(--muted);font-size:15px;width:3em;flex:none;padding-top:10px}
/* 顏色鈕：手機 358px 內寬一排放得下四個，高度仍 ≥44px 好點 */
.opt{display:flex;gap:6px;flex-wrap:wrap}
.opt button{display:inline-flex;align-items:center;gap:5px;min-height:44px;padding:0 10px 0 9px;border:1px solid #ccc;background:#fff;color:var(--fg);font-size:16px;line-height:1}
.opt button .dot{width:18px;height:18px}
.opt button[aria-pressed="true"]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}
.vname{font-size:15px;color:var(--muted);margin:0 0 16px}
.acts{display:flex;gap:10px}
.acts .btn{flex:1 1 0;min-width:0;padding-inline:12px}
.perks{margin-top:22px;font-size:15px;color:#666;display:flex;flex-direction:column;gap:4px}
.perks li::before{content:"・";color:var(--light)}

/* 商品介紹：圖框一律白底，改由整列底色交替｜單數列淺灰滿版、雙數列白，單數列的白圖框內縮成一張卡 */
.intro{display:flex;flex-direction:column;margin-inline:calc(-1 * var(--gutter))}
.ib{display:grid;grid-template-columns:minmax(0,1fr);align-items:center;background:#fff}
.ib:nth-child(odd){background:var(--alt)}
.ib .im{background:#fff;display:flex;align-items:center;justify-content:center;min-height:320px;padding:28px}
.ib:nth-child(odd) .im{margin:16px 16px 0}
.ib .im img{max-height:380px;width:auto}
.ib .tx{padding:36px 24px 48px;text-align:center}
.ib h3{font-size:clamp(22px,2.6vw,28px);font-weight:400}
.ib .en{display:block;font-size:13px;letter-spacing:.2em;color:var(--accent);margin-bottom:8px}
.ib p{color:#666;margin-top:12px;max-width:24em;margin-inline:auto}
@media (min-width:900px){
  .intro{margin-inline:calc(-1 * clamp(24px,4vw,56px))}
  .ib{grid-template-columns:1.2fr 1fr}
  .ib:nth-child(even) .im{order:2}
  .ib .im{min-height:480px}
  .ib:nth-child(odd) .im{margin:40px 0 40px clamp(24px,4vw,56px)}
  .ib .im img{max-height:420px}
  .ib .tx{text-align:left;padding:56px clamp(24px,5vw,80px)}
  .ib p{margin-inline:0}
}

.spec{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;align-items:start}
@media (min-width:900px){.spec{grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:56px}}
.spec-fig{background:var(--alt);display:flex;flex-direction:column;align-items:center;padding:28px 16px 14px}
.spec-fig img{max-height:320px;width:auto;opacity:.9}
.spec-fig figcaption{font-size:13px;color:var(--light);margin-top:14px;align-self:flex-end}
.spec-tbl{width:100%;table-layout:fixed;border-collapse:collapse;font-size:16px;border-top:1px solid var(--fg)}
.spec-tbl th,.spec-tbl td{text-align:left;padding:13px 14px;border-bottom:1px solid #e6e6e6;vertical-align:top;overflow-wrap:anywhere}
.spec-tbl th{width:30%;background:var(--alt);color:#555;font-weight:400}
.spec-tbl caption{caption-side:bottom;text-align:right;font-size:13px;color:var(--light);padding-top:10px}

.rel{position:relative}
@media (min-width:600px){.rel{padding-inline:56px}}
.relrow{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:4px}
.relrow::-webkit-scrollbar{display:none}
.ri{flex:0 0 calc((100% - 16px) / 1.5);scroll-snap-align:start;display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}
.ri>a:first-child{display:block;width:100%}
@media (min-width:600px){.ri{flex-basis:calc((100% - 32px) / 3)}}
@media (min-width:900px){.relrow{gap:24px}.ri{flex-basis:calc((100% - 72px) / 4)}}
.ri .ph{height:200px;display:flex;align-items:center;justify-content:center;background:#fff}
.ri .ph img{max-height:100%;width:auto}
.ri .nm{font-size:16px;margin-top:6px}
.ri .price{justify-content:center;flex-wrap:nowrap;white-space:nowrap;gap:0 8px}
.ri .price s{font-size:12px}
.ri .btn{padding-inline:30px;margin-top:4px}
/* 左右箭頭：44px 圓形點擊區，對齊商品圖垂直中線；手機疊在列表兩端 */
.rarr{position:absolute;top:100px;transform:translateY(-50%);z-index:2;display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid #ddd;border-radius:50%;background:#fff;color:#444;font-size:28px;line-height:1;padding:0 0 3px;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.rarr:hover{border-color:#999;color:var(--fg)}
.rarr.l{left:0}.rarr.r{right:0}

.nf{text-align:center;padding-block:96px}
.nf h1{font-size:clamp(26px,4vw,36px);font-weight:300}
.nf p{color:var(--muted);margin:12px 0 28px}

/* ---------- 首頁試坐區：滿版淺藍底 ---------- */
.trial{background:var(--tint);text-align:center;padding-block:60px;margin-top:64px}
.trial h2{font-size:clamp(28px,3.2vw,34px);font-weight:300;line-height:1.35;letter-spacing:.02em}
.trial .lead{color:#555;margin-top:14px}
.trial .lead span{display:inline-block}
.trial .btns{justify-content:center;margin-top:28px}
.trial .small{font-size:14px;color:#6b6b6b;margin-top:16px}
@media (min-width:900px){.trial{padding-block:84px;margin-top:88px}}

/* ---------- 常見問題：原生 details，右側＋展開後變－ ---------- */
.faq{border-top:1px solid #e6e6e6}
.qa{border-bottom:1px solid #e6e6e6}
.qa summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 2px;font-size:18px;line-height:1.5;cursor:pointer;list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"＋";content:"＋" / "";flex:none;font-size:20px;line-height:1;color:var(--accent)}
.qa[open] summary::after{content:"－";content:"－" / ""}
.qa summary:hover{color:var(--accent)}
.qa .ans{padding:0 2px 22px;color:#555;max-width:44em}

/* ---------- 門市 ---------- */
.stores{padding-bottom:56px}
.stores .hd{margin-top:72px}
.hours{color:var(--muted);font-size:15px;margin:-12px 0 20px}
.store-list{display:grid;grid-template-columns:minmax(0,1fr);gap:1px;background:#e8e8e8;border:1px solid #e8e8e8}
@media (min-width:600px){.store-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:900px){.store-list{grid-template-columns:repeat(3,minmax(0,1fr))}}
.store{background:#fff;padding:18px 20px;display:flex;flex-direction:column;gap:4px}
.st-name{font-size:18px}
.st-addr{color:#555;font-size:15px}
.st-addr:hover{color:var(--fg);text-decoration:underline}
.st-tel{color:var(--accent);font-size:16px;font-variant-numeric:tabular-nums}
.stores-cta{margin-top:24px;text-align:center}

/* ---------- 頁尾 ---------- */
.foot{border-top:1px solid var(--line);padding-block:32px;display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;align-items:center;font-size:14px;color:var(--light)}
.foot .logo img{height:36px}
.foot a:hover{color:var(--fg)}