/* 沙龍專欄：首頁、分類頁、文章頁共用樣式（延續首頁的 Byredo 白） */
:root{
  --ink:#151a16;
  --muted:#6d736e;
  --line:#e2e2de;
  --card:#f3f3f1;
  --warm:#f6f3ee;
  --accent:#8a6a48;
  --pad:clamp(16px,2.4vw,36px);
  --hdr:72px;
  --sans:'Jost','Noto Sans TC',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);font-size:15px;line-height:1.8;letter-spacing:.03em;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased;overflow-x:hidden;overflow-x:clip}
a{color:inherit;text-decoration:none}
[hidden]{display:none!important}
.u{font-size:12px;text-transform:uppercase;letter-spacing:.12em}
.muted{color:var(--muted)}
.nw{display:inline-block;white-space:nowrap}

/* 頁首＋分類列 */
.hdr{position:sticky;top:0;z-index:20;height:var(--hdr);display:flex;align-items:center;justify-content:space-between;padding:0 var(--pad);background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}
.logo{position:absolute;left:50%;transform:translateX(-50%);font-weight:500;font-size:20px;letter-spacing:.34em;padding-left:.34em;line-height:1;white-space:nowrap}
.jnav{position:sticky;top:var(--hdr);z-index:19;display:flex;justify-content:center;gap:clamp(18px,3.4vw,48px);padding:0 var(--pad);background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);overflow-x:auto;scrollbar-width:none}
.jnav::-webkit-scrollbar{display:none}
.jnav a{position:relative;padding:14px 0;font-size:13px;letter-spacing:.12em;color:var(--muted);white-space:nowrap;transition:color .3s}
.jnav a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .35s}
.jnav a:hover,.jnav a[aria-current]{color:var(--ink)}
.jnav a[aria-current]::after{transform:scaleX(1)}

/* 專欄首頁／分類頁 */
.j-hero{padding:clamp(56px,8vw,112px) var(--pad) clamp(36px,5vw,56px);max-width:1280px;margin:0 auto}
.j-hero .en{font-family:Jost,sans-serif;font-size:12px;letter-spacing:.24em;color:var(--muted)}
.j-hero h1{font-weight:300;font-size:clamp(32px,4.4vw,56px);letter-spacing:.16em;line-height:1.3;margin:12px 0 16px}
.j-hero p{max-width:620px;font-weight:300;font-size:15px;color:#3c423e;line-height:2}
.j-body{padding:0 var(--pad) clamp(72px,9vw,128px);max-width:1280px;margin:0 auto}
.j-cats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:clamp(56px,7vw,96px)}
.j-cat{display:flex;flex-direction:column;justify-content:space-between;gap:28px;min-height:250px;padding:28px 26px;background:var(--warm);transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.j-cat:hover{transform:translateY(-4px)}
.j-cat .no{font-family:Jost,sans-serif;font-size:11px;letter-spacing:.22em;color:var(--muted)}
.j-cat h2{font-weight:300;font-size:clamp(22px,2vw,28px);letter-spacing:.14em;margin:10px 0 8px}
.j-cat p{font-weight:300;font-size:13px;color:#3c423e}
.j-cat .go{display:flex;justify-content:space-between;padding-top:12px;border-top:1px solid #e4ddd2;font-size:11px;letter-spacing:.16em;color:var(--muted)}
.j-cat.dark{background:#1f2a24;color:#efe9df}
.j-cat.dark p,.j-cat.dark .no,.j-cat.dark .go{color:rgba(239,233,223,.7)}
.j-cat.dark .go{border-color:rgba(239,233,223,.18)}
.j-cat.green{background:#e7ede3}
.j-sec{margin-bottom:clamp(48px,6vw,80px)}
.j-sec-hd{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding-bottom:14px;margin-bottom:8px;border-bottom:1px solid var(--ink)}
.j-sec-hd h2{font-weight:300;font-size:clamp(20px,2vw,26px);letter-spacing:.14em}
.j-sec-hd p{font-size:12px;letter-spacing:.06em;color:var(--muted)}
.j-list{list-style:none}
.j-item{border-bottom:1px solid var(--line)}
.j-item a{display:grid;grid-template-columns:120px minmax(0,1fr) 24px;gap:8px 28px;align-items:baseline;padding:24px 0;transition:padding .35s}
.j-item a:hover{padding-left:8px}
.j-item .tag{font-size:11px;letter-spacing:.14em;color:var(--muted)}
.j-item h3{font-weight:400;font-size:clamp(16px,1.5vw,19px);letter-spacing:.06em;line-height:1.6}
.j-item p{grid-column:2;font-weight:300;font-size:13px;color:#3c423e;margin-top:-2px}
.j-item .arr{grid-column:3;grid-row:1;text-align:right;color:var(--muted)}
.subnav{display:flex;flex-wrap:wrap;gap:8px;margin:-8px 0 36px}
.subnav a{padding:6px 14px;border:1px solid var(--line);font-size:12px;letter-spacing:.1em;transition:border-color .3s}
.subnav a:hover{border-color:var(--ink)}

/* 文章頁 */
.crumb{display:flex;flex-wrap:wrap;gap:8px;max-width:760px;margin:0 auto;padding:24px var(--pad) 0;font-size:12px;letter-spacing:.08em;color:var(--muted)}
.crumb a:hover{color:var(--ink)}
.crumb i{font-style:normal;opacity:.5}
.art{max-width:760px;margin:0 auto;padding:clamp(28px,5vw,56px) var(--pad) clamp(56px,7vw,96px)}
.art-cat{font-size:12px;letter-spacing:.16em;color:var(--accent)}
.art h1{font-weight:400;font-size:clamp(26px,3.4vw,40px);letter-spacing:.08em;line-height:1.5;margin:12px 0 18px}
.art-meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:12px;letter-spacing:.08em;color:var(--muted);padding-bottom:24px;border-bottom:1px solid var(--line)}
.art-sum{margin:28px 0 8px;padding:22px 24px;background:var(--warm)}
.art-sum b{display:block;font-weight:500;font-size:13px;letter-spacing:.14em;margin-bottom:8px}
.art-sum ul{padding-left:1.2em}
.art-sum li{font-weight:300;font-size:14.5px;margin:4px 0}
.toc{margin:28px 0;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.toc b{display:block;font-weight:400;font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:8px}
.toc ol{padding-left:1.4em}
.toc li{font-size:14px;margin:4px 0}
.toc a{border-bottom:1px solid transparent;transition:border-color .3s}
.toc a:hover{border-color:currentColor}
.prose{font-size:16.5px;line-height:2.05;font-weight:300;color:#26302a}
.prose>*+*{margin-top:1.1em}
.prose h2{font-weight:400;font-size:clamp(20px,2.2vw,25px);letter-spacing:.08em;line-height:1.6;color:var(--ink);margin-top:2.4em;padding-top:1.2em;border-top:1px solid var(--line);scroll-margin-top:calc(var(--hdr) + 64px)}
.prose h3{font-weight:500;font-size:17.5px;letter-spacing:.06em;line-height:1.7;color:var(--ink);margin-top:1.8em}
.prose strong{font-weight:500;color:var(--ink)}
.prose ul,.prose ol{padding-left:1.4em}
.prose li{margin:.4em 0}
.prose li::marker{color:var(--muted)}
.prose a{border-bottom:1px solid currentColor}
.prose blockquote{padding:4px 0 4px 20px;border-left:2px solid var(--accent);color:var(--ink);font-weight:400}
.note{padding:18px 22px;background:var(--card);font-size:14.5px;line-height:1.95}
.note b{font-weight:500}
.check{list-style:none;padding-left:0!important}
.check li{position:relative;padding-left:28px}
.check li::before{content:"";position:absolute;left:2px;top:.62em;width:12px;height:12px;border:1px solid var(--ink)}
.check li::after{content:"";position:absolute;left:5px;top:.72em;width:6px;height:3px;border-left:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);transform:rotate(-45deg)}
.tbl{width:100%;border-collapse:collapse;font-size:14.5px;line-height:1.8}
.tbl th,.tbl td{text-align:left;vertical-align:top;padding:12px 10px;border-bottom:1px solid var(--line)}
.tbl th{font-weight:500;font-size:13px;letter-spacing:.06em;color:var(--muted);border-bottom-color:var(--ink)}
.tbl-wrap{overflow-x:auto}
.legal{font-size:12.5px;line-height:1.9;color:var(--muted)}

/* 常見問題 */
.faq{margin-top:2.6em;border-top:1px solid var(--ink)}
.faq h2{border-top:0!important;padding-top:0!important;margin-top:1.2em!important}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;justify-content:space-between;gap:16px;padding:16px 0;cursor:pointer;font-weight:400;font-size:15px;letter-spacing:.04em;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:Jost,sans-serif;font-weight:300;font-size:18px;line-height:1;color:var(--muted)}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 18px;font-size:15px;line-height:1.95}

/* 文末：推回大頭叔叔 */
.cta{margin-top:3em;padding:clamp(28px,4vw,44px);background:#1f2a24;color:#efe9df}
.cta .k{font-size:11px;letter-spacing:.2em;color:rgba(239,233,223,.6)}
.cta h2{font-weight:300;font-size:clamp(20px,2.2vw,26px);letter-spacing:.1em;line-height:1.6;margin:10px 0 12px}
.cta p{font-weight:300;font-size:15px;line-height:2;color:rgba(239,233,223,.85)}
.cta .row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:50px;padding:0 28px;background:var(--ink);color:#fff;font-size:12px;letter-spacing:.16em;transition:opacity .3s;white-space:nowrap}
.btn:hover{opacity:.86}
.cta .btn{background:#efe9df;color:#1f2a24}
.cta .btn.ghost{background:transparent;color:#efe9df;border:1px solid rgba(239,233,223,.5)}
.author{display:flex;gap:16px;align-items:flex-start;margin-top:2.4em;padding-top:24px;border-top:1px solid var(--line)}
.author .av{width:52px;height:52px;flex:none;border-radius:50%;background:var(--warm);display:flex;align-items:center;justify-content:center;font-size:18px;letter-spacing:0}
.author b{display:block;font-weight:500;font-size:14px;letter-spacing:.08em}
.author p{font-weight:300;font-size:13px;line-height:1.9;color:#3c423e;margin-top:2px}
.related{max-width:1280px;margin:0 auto;padding:0 var(--pad) clamp(72px,8vw,120px)}
.related h2{font-weight:300;font-size:clamp(20px,2vw,24px);letter-spacing:.14em;padding-bottom:14px;margin-bottom:6px;border-bottom:1px solid var(--ink)}

/* 底部購買列（跟講義頁一樣） */
.buybar{position:fixed;left:0;right:0;bottom:0;z-index:45;display:flex;align-items:center;gap:20px;padding:10px var(--pad);background:rgba(255,255,255,.97);border-top:1px solid var(--line);transform:translateY(105%);transition:transform .45s cubic-bezier(.2,.7,.2,1)}
.buybar.show{transform:none}
.buybar .p{display:flex;flex-direction:column;align-items:flex-end;margin-left:auto;line-height:1.35}
.buybar .t{font-size:11px;letter-spacing:.08em;color:var(--muted);white-space:nowrap}
.buybar .pp{display:flex;align-items:baseline;gap:10px;font-size:12px;letter-spacing:.08em}
.buybar .pp em{font-style:normal;color:var(--muted);font-size:11px}
.buybar .pp b{font-family:Jost,sans-serif;font-weight:400;font-size:17px;letter-spacing:.06em}
.buybar .btn{height:44px;padding:0 24px}

/* 頁尾 */
.ftr{border-top:1px solid var(--line);padding:28px var(--pad) 96px;display:flex;justify-content:space-between;gap:12px 24px;flex-wrap:wrap;font-size:11px;letter-spacing:.1em;color:var(--muted)}
.ftr nav{display:flex;gap:18px;flex-wrap:wrap}
.ftr a:hover{color:var(--ink)}

@media (max-width:900px){
  .j-cats{grid-template-columns:1fr}
  .j-cat{min-height:0}
  .jnav{justify-content:flex-start}
  .j-item a{grid-template-columns:minmax(0,1fr) 20px;gap:4px 12px;padding:20px 0}
  .j-item .tag{grid-column:1}
  .j-item h3{grid-column:1}
  .j-item p{grid-column:1}
  .j-item .arr{grid-column:2;grid-row:2}
  .buybar .p{margin-left:0;align-items:flex-start}
  .buybar .btn{margin-left:auto}
}
@media (max-width:600px){
  :root{--hdr:60px}
  .logo{font-size:17px}
  .hdr .u{font-size:11px}
  .prose{font-size:16px;line-height:2}
  .tbl{font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto!important}
}