/* ══════════════════════════════════════════════════════════
   共用樣式 — 四個頁面都吃這一份
   字體：Noto Serif TC / Noto Sans TC / Newsreader / Archivo
        皆為 SIL Open Font License 1.1，可商用
   ══════════════════════════════════════════════════════════ */

:root{
  --paper:#FFFFFF;
  --paper-soft:#F7F6F3;
  --ink:#1A1A18;
  --graphite:#5F5E59;
  --hairline:#E3E1DB;
  --hairline-soft:#EFEDE8;
  --spot:#2F4858;

  --serif:'Noto Serif TC','Newsreader',Georgia,serif;
  --sans:'Noto Sans TC','Helvetica Neue',Arial,sans-serif;
  --label:'Archivo','Noto Sans TC',sans-serif;

  --gutter:clamp(22px,5.5vw,72px);

  --fs-body:17px;   /* 字級下限 14px — 觀眾年齡層偏高 */
  --fs-label:14px;
  --fs-util:14px;
}
@media(min-width:900px){:root{--fs-body:18px}}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-weight:300;
  font-size:var(--fs-body);line-height:1.85;
  overflow-x:hidden;
}
[data-lang="zh"] .en{display:none!important}
[data-lang="en"] .zh{display:none!important}
[data-lang="en"] body{font-family:'Newsreader',Georgia,serif}

img{max-width:100%;display:block}
button{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--spot);outline-offset:3px;border-radius:2px}

/* ── 頁首 ─────────────────────────────── */
.bar{
  position:sticky;top:0;z-index:40;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px var(--gutter);
  background:rgba(255,255,255,.9);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s;
}
.bar.stuck{border-bottom-color:var(--hairline)}
.bar-title{
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.08em;
  color:var(--graphite);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  display:flex;align-items:center;gap:10px;min-width:0;
}
.bar-title a{display:flex;align-items:center;gap:10px;min-height:44px;min-width:0}
.bar-title a:hover{color:var(--ink)}
.back-mark{flex:none;font-size:16px}

.bar-actions{display:flex;align-items:center;gap:4px;flex:none}
.idx-btn{
  background:none;border:none;cursor:pointer;
  min-height:44px;padding:0 14px;
  display:flex;align-items:center;gap:8px;
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.06em;
  color:var(--ink);
}
.idx-btn::before{
  content:"";width:13px;height:13px;flex:none;
  background:
    linear-gradient(var(--graphite),var(--graphite)) 0 0/5px 5px no-repeat,
    linear-gradient(var(--graphite),var(--graphite)) 8px 0/5px 5px no-repeat,
    linear-gradient(var(--graphite),var(--graphite)) 0 8px/5px 5px no-repeat,
    linear-gradient(var(--graphite),var(--graphite)) 8px 8px/5px 5px no-repeat;
}
.idx-btn:hover::before{
  background:
    linear-gradient(var(--ink),var(--ink)) 0 0/5px 5px no-repeat,
    linear-gradient(var(--ink),var(--ink)) 8px 0/5px 5px no-repeat,
    linear-gradient(var(--ink),var(--ink)) 0 8px/5px 5px no-repeat,
    linear-gradient(var(--ink),var(--ink)) 8px 8px/5px 5px no-repeat;
}
.bar-sep{width:1px;height:18px;background:var(--hairline);flex:none}

/* 窄螢幕：返回只留箭頭，把空間讓給目錄 */
@media(max-width:480px){
  .bar-title .back-text{
    position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);
  }
  .back-mark{font-size:19px}
}
.lang{display:flex;align-items:center;flex:none}
.lang button{
  background:none;border:none;cursor:pointer;min-height:44px;padding:0 12px;
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.06em;
  color:var(--graphite);border-bottom:2px solid transparent;
}
.lang button[aria-pressed="true"]{color:var(--ink);border-bottom-color:var(--ink)}
.lang i{color:var(--hairline);font-style:normal}

/* ── 通用 ─────────────────────────────── */
.eyebrow{
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.2em;
  text-transform:uppercase;color:var(--graphite);margin-bottom:26px;
}
.rule{
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.2em;
  text-transform:uppercase;color:var(--spot);
  display:flex;align-items:center;gap:14px;margin-bottom:16px;
}
.rule::after{content:"";height:1px;flex:1;background:var(--hairline)}

/* ── 封面 ─────────────────────────────── */
.cover{padding:clamp(52px,12vh,120px) var(--gutter) clamp(44px,9vh,88px);max-width:900px}
.cover h1{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(2.2rem,8.5vw,4.4rem);line-height:1.18;
  letter-spacing:.01em;margin-bottom:14px;
}
.cover .sub{
  font-family:var(--serif);font-weight:300;
  font-size:clamp(1.05rem,3.6vw,1.45rem);line-height:1.7;
  color:var(--graphite);margin-bottom:42px;
}
.facts{
  display:grid;gap:4px 26px;grid-template-columns:auto 1fr;
  font-size:var(--fs-label);line-height:2;
  border-top:1px solid var(--hairline);padding-top:22px;max-width:540px;
}
.facts dt{color:var(--graphite)}

/* ── 首頁的系列入口 ───────────────────── */
.series-list{padding:clamp(24px,5vh,48px) var(--gutter) 0;max-width:1200px}
.card{
  display:grid;gap:clamp(20px,3vw,44px);
  padding:clamp(30px,4vh,44px) 0;
  border-top:1px solid var(--hairline);
  align-items:start;
}
.card:last-child{border-bottom:1px solid var(--hairline)}
@media(min-width:820px){.card{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}}
.card-strip{display:grid;grid-auto-flow:column;gap:8px;justify-content:start}
.card-chip{
  width:clamp(34px,9vw,54px);aspect-ratio:4/5;
  background:linear-gradient(150deg,hsl(var(--h,40) 10% 84%),hsl(var(--h,40) 8% 72%));
  box-shadow:0 5px 12px -7px rgba(0,0,0,.45);
  transition:transform .35s cubic-bezier(.2,.7,.3,1);
}
.card:hover .card-chip{transform:translateY(-4px)}
.card:hover .card-chip:nth-child(2){transition-delay:.03s}
.card:hover .card-chip:nth-child(3){transition-delay:.06s}
.card:hover .card-chip:nth-child(4){transition-delay:.09s}
.card:hover .card-chip:nth-child(5){transition-delay:.12s}
.card h2{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(1.4rem,4.6vw,2rem);line-height:1.4;margin-bottom:14px;
}
.card p{color:var(--graphite);margin-bottom:22px}
.card .go{
  display:inline-flex;align-items:center;gap:10px;min-height:48px;
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.08em;
  color:var(--ink);border-bottom:1px solid var(--ink);
}
.card .go::after{content:"→";transition:transform .3s}
.card:hover .go::after{transform:translateX(5px)}

/* ── 系列頁標頭 ───────────────────────── */
.room-head{
  padding:clamp(44px,9vh,88px) var(--gutter) 0;max-width:680px;
  margin-bottom:clamp(40px,6vh,72px);
}
.room-head h1{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(1.7rem,6vw,2.6rem);line-height:1.35;margin-bottom:18px;
}
.room-head .statement{color:var(--graphite)}

/* ── 單件作品 ─────────────────────────── */
.work{
  padding:0 var(--gutter);
  margin-bottom:clamp(64px,10vh,112px);
  scroll-margin-top:76px;
}
.work-no{
  display:flex;align-items:center;gap:14px;
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.14em;
  color:var(--graphite);margin-bottom:18px;
}
.work-no::after{content:"";height:1px;flex:1;background:var(--hairline-soft)}
.frame{
  border:none;background:none;padding:0;width:100%;
  cursor:zoom-in;display:block;
  transition:transform .5s cubic-bezier(.2,.7,.3,1);
}
.frame:hover{transform:translateY(-3px)}
.canvas{
  width:100%;aspect-ratio:var(--ar,4/5);
  background:linear-gradient(150deg,hsl(var(--h,40) 10% 84%),hsl(var(--h,40) 8% 72%));
  box-shadow:0 1px 3px rgba(0,0,0,.07),0 20px 44px -20px rgba(0,0,0,.28);
  display:grid;place-items:center;overflow:hidden;
  font-family:var(--label);font-size:var(--fs-label);letter-spacing:.14em;
  color:rgba(255,255,255,.72);transition:box-shadow .5s;
}
/* 有真圖時：不上底色，讓畫自己決定 */
.canvas:has(img){background:var(--paper)}
.canvas img{width:100%;height:100%;object-fit:contain}
.frame:hover .canvas{box-shadow:0 2px 5px rgba(0,0,0,.09),0 32px 64px -24px rgba(0,0,0,.36)}
.zoom-hint{
  font-family:var(--label);font-size:var(--fs-label);color:var(--graphite);
  margin-top:10px;opacity:.75;
}
.work-body{margin-top:24px}
.work-title{
  font-family:var(--serif);font-weight:400;
  font-size:1.3rem;line-height:1.5;margin-bottom:8px;
}
.tombstone{
  font-size:var(--fs-label);line-height:1.9;color:var(--graphite);
  padding-bottom:18px;border-bottom:1px solid var(--hairline-soft);margin-bottom:18px;
}
.work-note{color:var(--ink);max-width:44em}
@media(min-width:1000px){
  .work{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(300px,.85fr);
        gap:clamp(40px,4vw,72px);align-items:start;max-width:1360px;}
  .work-no{grid-column:1/-1}
  .work-body{margin-top:0;position:sticky;top:96px}
}

/* ── 系列頁末：往下一個系列 ──────────── */
.jump{
  margin-top:clamp(40px,7vh,80px);
  border-top:1px solid var(--hairline);
  display:grid;grid-template-columns:1fr;
}
@media(min-width:720px){.jump{grid-template-columns:1fr 1fr}}
.jump a{
  padding:clamp(30px,5vh,52px) var(--gutter);
  border-bottom:1px solid var(--hairline);
  display:block;transition:background .3s;
}
@media(min-width:720px){.jump a+a{border-left:1px solid var(--hairline)}}
.jump a:hover{background:var(--paper-soft)}
.jump small{
  display:block;font-family:var(--label);font-size:var(--fs-util);
  letter-spacing:.16em;text-transform:uppercase;color:var(--graphite);margin-bottom:10px;
}
.jump strong{font-family:var(--serif);font-weight:400;font-size:1.2rem;line-height:1.5}

/* ── 藝術家 / 展覽資訊 ────────────────── */
.plate{
  padding:clamp(52px,8vh,92px) var(--gutter);
  background:var(--paper-soft);border-top:1px solid var(--hairline);
}
.plate-inner{max-width:1060px;display:grid;gap:clamp(44px,6vw,80px);grid-template-columns:1fr}
@media(min-width:880px){.plate-inner{grid-template-columns:1.3fr 1fr}}
.plate h3{
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.2em;
  text-transform:uppercase;font-weight:500;color:var(--graphite);
  margin-bottom:24px;padding-bottom:12px;border-bottom:1px solid var(--hairline);
}
.bio p{margin-bottom:1.15em}
.info dl{display:grid;grid-template-columns:auto 1fr;gap:4px 22px;
  font-size:var(--fs-label);line-height:2.05}
.info dt{color:var(--graphite);white-space:nowrap}

.foot{
  padding:32px var(--gutter) 44px;
  font-size:var(--fs-label);color:var(--graphite);
  border-top:1px solid var(--hairline);
}

/* ── 目錄（跨系列）───────────────────── */
.index{position:fixed;inset:0;z-index:60;background:var(--paper);display:none;flex-direction:column}
.index[open]{display:flex}
.index-bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px var(--gutter);border-bottom:1px solid var(--hairline);flex:none;
}
.index-bar strong{
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.2em;
  text-transform:uppercase;font-weight:500;color:var(--graphite);
}
.index-bar button{
  background:none;border:none;cursor:pointer;font-size:26px;line-height:1;
  min-width:48px;min-height:48px;color:var(--ink);
}
.index-scroll{overflow-y:auto;padding:0 var(--gutter) 48px;-webkit-overflow-scrolling:touch}
.index-group{padding-top:34px}
.index-group h4{
  font-family:var(--serif);font-weight:400;font-size:1.15rem;
  padding-bottom:12px;margin-bottom:18px;border-bottom:1px solid var(--hairline);
}
.index-group h4 small{
  font-family:var(--label);font-size:var(--fs-label);color:var(--graphite);
  letter-spacing:.14em;margin-right:12px;
}
.index-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(74px,1fr));gap:12px}
.index-grid a{display:block}
.index-grid .chip{
  aspect-ratio:4/5;width:100%;
  background:linear-gradient(150deg,hsl(var(--h,40) 10% 84%),hsl(var(--h,40) 8% 72%));
  box-shadow:0 6px 14px -8px rgba(0,0,0,.4);transition:transform .25s;
}
.index-grid .chip img{width:100%;height:100%;object-fit:cover}
.index-grid a:hover .chip{transform:translateY(-3px)}
.index-grid span{
  display:block;margin-top:7px;
  font-family:var(--label);font-size:var(--fs-label);color:var(--graphite);
}
.index-grid a[aria-current] span{color:var(--ink);font-weight:500}

/* ── 放大檢視 ─────────────────────────── */
.viewer{
  position:fixed;inset:0;z-index:80;background:rgba(250,250,249,.99);
  display:none;flex-direction:column;
  cursor:zoom-out;touch-action:none;
}
.viewer[open]{display:flex}
.viewer-wrap{
  flex:1;min-height:0;display:flex;flex-direction:column;
  transition:transform .2s ease,opacity .2s ease;
}
.v-stage{
  flex:1;min-height:0;display:grid;place-items:center;
  padding:clamp(56px,8vh,72px) clamp(12px,3vw,48px) clamp(8px,1.5vh,16px);
}
.v-stage .canvas{
  aspect-ratio:var(--ar,4/5);
  width:auto;height:100%;
  max-width:100%;max-height:100%;
  box-shadow:0 30px 70px -30px rgba(0,0,0,.45);
}
.v-stage .canvas img{width:100%;height:100%;object-fit:contain}
.viewer-label{
  flex:none;text-align:center;
  padding:0 20px clamp(20px,4vh,36px);
  max-width:520px;margin:0 auto;
}
.viewer-label .work-title{font-size:1.15rem;margin-bottom:4px}
.v-hint{font-family:var(--label);font-size:var(--fs-label);
  color:var(--graphite);margin-top:6px;opacity:.8}
.v-close{
  position:absolute;top:12px;right:12px;
  display:flex;align-items:center;gap:9px;
  background:var(--paper);border:1px solid var(--hairline);border-radius:999px;
  cursor:pointer;padding:0 20px;min-height:48px;
  font-family:var(--label);font-size:var(--fs-util);letter-spacing:.06em;
  color:var(--ink);box-shadow:0 4px 14px -6px rgba(0,0,0,.2);
  transition:background .2s,border-color .2s;
}
.v-close:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.v-close b{font-weight:400;font-size:19px;line-height:1}
.v-step{
  position:absolute;top:50%;transform:translateY(-50%);
  background:var(--paper);border:1px solid var(--hairline);border-radius:999px;
  cursor:pointer;width:52px;height:52px;display:grid;place-items:center;
  font-size:19px;color:var(--ink);box-shadow:0 4px 14px -6px rgba(0,0,0,.2);
  transition:background .2s,border-color .2s;
}
.v-step:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.v-prev{left:clamp(8px,2vw,24px)}
.v-next{right:clamp(8px,2vw,24px)}
@media(max-width:520px){
  .v-step{top:auto;bottom:16px;transform:none;width:56px;height:56px}
  .v-prev{left:20px} .v-next{right:20px}
}

/* ── 進場動態 ─────────────────────────── */
.reveal{opacity:0;transform:translateY(18px)}
.reveal.in{opacity:1;transform:none;
  transition:opacity .9s ease,transform .9s cubic-bezier(.2,.7,.3,1)}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}