@font-face{font-family:'Commit Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url(https://cdn.jsdelivr.net/fontsource/fonts/commit-mono@latest/latin-400-normal.woff2) format('woff2');}
@font-face{font-family:'Commit Mono';font-style:normal;font-weight:500;font-display:swap;
  src:url(https://cdn.jsdelivr.net/fontsource/fonts/commit-mono@latest/latin-500-normal.woff2) format('woff2');}

:root{
  --bg:#FAFAFA; --surface:#FFFFFF; --card:#F0F0F0; --card-alt:#ECECEC;
  --ink:#111111; --muted:#8A8A8A; --dim:#B5B5B5;
  --line:#E5E5E5; --line-soft:#EDEDED; --line-bar:#E8E8E8;
  --cloud-veil:rgba(250,250,250,.5);
  --scrub-track:rgba(255,255,255,.55);
  --wall-pad:clamp(16px,6vw,112px);   /* 作品牆左右額外留白 */
  --r:6px;
  --pad:clamp(16px,3vw,40px);
  --gap:clamp(10px,1.2vw,16px);
  --e:cubic-bezier(.2,.7,.2,1);
  --mono:'Commit Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:'Commit Mono','PingFang TC','Microsoft JhengHei','Noto Sans TC',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;}
body{
  font-family:var(--sans); background:var(--bg); color:var(--ink);
  -webkit-font-smoothing:antialiased; overflow:hidden;
  -webkit-tap-highlight-color:transparent;
}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
button:active{transform:scale(.94);}
a{color:inherit;}
.mute{color:var(--muted);}
.mono{font-family:var(--mono);}

/* ---------------- shell ---------------- */
.shell{height:100dvh;display:flex;flex-direction:column;overflow:hidden;position:relative;}

.gridlines{
  position:absolute;inset:0;pointer-events:none;z-index:0;
  margin:0 var(--pad);
  border-left:1px solid var(--line-soft);
  background:repeating-linear-gradient(to right,transparent 0 calc(100%/6 - 1px),var(--line-soft) calc(100%/6 - 1px) calc(100%/6));
  opacity:0;transition:opacity 1.4s var(--e) .3s;
}
.ready .gridlines{opacity:1;}
@media(max-width:760px){
  .gridlines{background:repeating-linear-gradient(to right,transparent 0 calc(100%/2 - 1px),var(--line-soft) calc(100%/2 - 1px) calc(100%/2));}
}

/* ---------------- header ---------------- */
header{
  flex:none;z-index:30;background:var(--bg);border-bottom:1px solid var(--line-bar);
  padding:4px var(--pad);
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  opacity:0;transform:translateY(-10px);transition:opacity .8s var(--e) .05s,transform .8s var(--e) .05s;
}
.ready header{opacity:1;transform:none;}
@media(max-width:760px){header{grid-template-columns:1fr auto;}}

.sig{
  font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.08em;
  justify-self:start;transform-origin:left center;
  transition:transform .75s var(--e);white-space:nowrap;
  height:44px;display:inline-flex;align-items:center;
}
.sig.big{transform:scale(3.6);}
@media(max-width:760px){.sig.big{transform:scale(2.2);}}

.clock{
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--ink);
  justify-self:center;white-space:nowrap;transition:opacity .4s var(--e);
}
.clock b{font-weight:400;color:var(--muted);}
.dim-clock .clock{opacity:0;}
@media(max-width:760px){.clock{display:none;}}

nav{justify-self:end;display:flex;gap:clamp(16px,2vw,28px);}
nav button{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;height:44px;
  background-image:linear-gradient(var(--ink),var(--ink));
  background-repeat:no-repeat;background-position:0 calc(50% + 9px);background-size:0% 1px;
  transition:background-size .5s var(--e);
}
nav button:hover{background-size:100% 1px;}

/* ---------------- track ---------------- */
.track{
  flex:1;min-height:0;position:relative;z-index:1;
  display:flex;gap:var(--gap);
  overflow-x:auto;overflow-y:hidden;
  scroll-snap-type:x mandatory;scroll-padding-left:var(--pad);
  padding:calc(var(--gap) * 1.5) var(--pad) 0;
  scrollbar-width:none;
}
.track::-webkit-scrollbar{display:none;}
.track.nosnap{scroll-snap-type:none;}
.track.grabbing,.track.grabbing .slide{cursor:grabbing;user-select:none;-webkit-user-select:none;}

.slide{
  flex:none;height:100%;scroll-snap-align:start;
  width:calc(100% / 6 * 4);
  background:var(--card);border-radius:var(--r);
  position:relative;cursor:pointer;overflow:hidden;
  opacity:0;transform:translateY(64px);
}
.slide.other{background:var(--card-alt);}   /* 寬度和其他卡片一致，物件間距才會平均 */
.slide.has-img{background:transparent;overflow:visible;}   /* 去背物件直接浮在頁面上，陰影不被卡片裁切 */
.slide.has-img .obj .fig{filter:drop-shadow(0 16px 18px rgba(17,17,17,.2));}
.slide.glow .obj .fig{filter:none;}   /* 發光的物件（漸變之環）不加投影 */
.ready .slide{animation:rise 1.2s var(--e) forwards;}
@keyframes rise{to{opacity:1;transform:none;}}
@media(max-width:760px){
  .slide{width:88%;}
}

.obj{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  will-change:transform;
}
.obj .fig{
  filter:drop-shadow(0 40px 46px rgba(17,17,17,.32));
  display:flex;align-items:center;justify-content:center;
}
.obj img{display:block;max-width:100%;max-height:100%;object-fit:contain;}
.obj .stripe{
  width:100%;height:100%;border-radius:4px;
  background:repeating-linear-gradient(45deg,transparent 0 7px,rgba(17,17,17,.08) 7px 8px);
  outline:1px solid rgba(17,17,17,.08);outline-offset:-1px;
}

/* ---------------- info ---------------- */
.info{
  flex:none;z-index:2;
  padding:var(--gap) var(--pad) max(26px,env(safe-area-inset-bottom));
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2fr);
  align-items:end;gap:0;
  opacity:0;transform:translateY(24px);transition:opacity .9s var(--e) .5s,transform .9s var(--e) .5s;
}
.ready .info{opacity:1;transform:none;}
.info>div:first-child{min-width:0;padding-right:clamp(24px,4vw,72px);}
@media(max-width:760px){
  .info>div:first-child{padding-right:0;}
  .info{display:flex;flex-direction:column;gap:16px;align-items:stretch;}
}

.counter{font-family:var(--mono);font-size:13px;letter-spacing:.04em;display:flex;align-items:center;height:1.3em;overflow:hidden;}
.counter .reel{display:inline-block;height:1.3em;overflow:hidden;}
.counter .reel i{display:block;height:1.3em;line-height:1.3em;font-style:normal;transition:transform .7s var(--e);}
@media(max-width:760px){.counter{font-size:12px;}}

.roleline{font-family:var(--mono);font-size:12px;letter-spacing:.04em;line-height:1.5;color:var(--muted);margin-top:10px;text-transform:uppercase;}
@media(max-width:760px){.roleline{font-size:11px;}}

.titles{display:grid;margin-top:6px;}
.titles h1{
  grid-area:1/1;align-self:start;
  font-size:clamp(28px,min(3.6vw,6.6vh),56px);font-weight:500;line-height:1.1;letter-spacing:-.02em;
  cursor:pointer;opacity:0;pointer-events:none;
}
.titles h1.on{opacity:1;pointer-events:auto;}
.titles h1 span{display:inline-block;will-change:transform,opacity,filter;}
.titles h1 .ghost{font-style:normal;visibility:hidden;}
@media(max-width:760px){.titles h1{font-size:clamp(26px,7.4vw,34px);}}

.mechs{display:flex;justify-content:flex-end;align-items:center;height:26px;gap:0 14px;white-space:nowrap;}
.mechs button{
  font-size:12px;letter-spacing:.02em;line-height:24px;text-align:left;
  color:var(--ink);transition:color .3s var(--e);white-space:nowrap;
}
.mechs button em{font-style:normal;font-family:var(--mono);font-size:10px;color:var(--muted);margin-left:3px;}
@media(hover:hover){.mechs button:hover{color:var(--muted);}}
.mechs .none{font-size:12px;color:var(--muted);line-height:24px;}
@media(max-width:760px){
  .mechs{justify-content:flex-start;height:38px;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;}
  .mechs::-webkit-scrollbar{display:none;}
  .mechs button{line-height:36px;}
}

.ticks{display:flex;align-items:flex-end;gap:0;margin:18px -12px 0;}
.ticks .arrow{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:99px;color:var(--muted);transition:background .25s var(--e),color .25s var(--e);}
.ticks .arrow:hover{background:#F1F1F1;color:var(--ink);}
.ticks .cells{display:flex;flex:1;}
.tick{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;padding-bottom:0;}
.tick .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--muted);transition:color .3s var(--e);}
.tick.cur .lbl{color:var(--ink);}
.tick .bar{width:100%;height:2px;background:var(--line);margin-top:4px;overflow:hidden;}
.tick .bar i{display:block;height:100%;background:var(--ink);transform:scaleX(0);}
/* 手機：序列移到卡片正下方、靠右、縮小，箭頭拿掉（用手指滑就好） */
@media(max-width:760px){
  .info>div:last-child{display:contents;}
  .ticks{order:-1;align-self:flex-end;margin:0;}
  .ticks .arrow{display:none;}
  .ticks .cells{flex:none;}
  .tick{flex:none;width:28px;gap:4px;}
  .tick .lbl{font-size:10px;}
}

/* ---------------- cursor ---------------- */
.cursor{
  position:fixed;width:84px;height:84px;border-radius:99px;background:var(--ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  pointer-events:none;z-index:60;left:0;top:0;
  transform:translate(-50%,-50%) scale(.2);opacity:0;
  transition:transform .35s var(--e),opacity .25s var(--e);
}
.cursor.on{opacity:1;transform:translate(-50%,-50%) scale(1);}
@media(hover:none),(pointer:coarse){.cursor{display:none!important;}}

/* ---------------- overlay ---------------- */
.ov{
  position:fixed;inset:0;z-index:50;background:var(--bg);
  display:none;flex-direction:column;
  opacity:0;transform:translateY(14px);transition:opacity .5s var(--e),transform .5s var(--e);
}
.ov.show{display:flex;}
.ov.in{opacity:1;transform:none;}

/* 頂部列：跟首頁 header 同高、同一條底線 */
.ovtop{
  flex:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:4px var(--pad);border-bottom:1px solid var(--line-bar);background:var(--bg);
}
.ovtop .kicker{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;line-height:44px;
  min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.ovtop .kicker b{font-weight:500;}
.ovtop .kicker span{color:var(--muted);}
.ovtop .acts{display:flex;flex:none;margin-right:-12px;}
.ib{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:99px;color:var(--muted);transition:background .25s var(--e),color .25s var(--e);}
.ib:hover{background:#F1F1F1;color:var(--ink);}
.ib svg,.nextcase svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}

.ovscroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:none;}
.ovscroll::-webkit-scrollbar{display:none;}

/* ---------------- case ---------------- */
/* 內容對齊首頁的 6 欄格線：小標佔第 1–2 欄，內文從第 3 欄開始 */
.case{padding:0 var(--pad);}
.case-head{padding:clamp(36px,8vh,88px) 0 clamp(28px,5vh,48px);}
.case-head h2{font-size:clamp(28px,min(3.6vw,6.6vh),56px);font-weight:500;line-height:1.1;letter-spacing:-.02em;}
.case-head .sum{font-size:clamp(15px,1.3vw,18px);line-height:1.6;color:var(--muted);margin-top:14px;max-width:680px;}

.facts{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));border-top:1px solid var(--line);}
.facts>div{padding:14px 16px 0 0;min-width:0;}
.facts .f-r{grid-column:span 2;}
.facts .f-m{grid-column:span 2;}
.facts dt,.sec h3,.nextcase .lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.07em;color:var(--muted);font-weight:400;}
.facts dd{font-size:14px;line-height:1.7;margin-top:6px;}
.facts a{text-decoration:none;font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  background-image:linear-gradient(var(--ink),var(--ink));background-repeat:no-repeat;background-position:0 100%;background-size:0% 1px;transition:background-size .5s var(--e);}
.facts a:hover{background-size:100% 1px;}

.hero{margin-top:clamp(28px,5vh,48px);}
.vh+.hero{margin-top:0;}
/* 只給螢幕閱讀器的文字 */
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

.sec{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));border-top:1px solid var(--line);padding:clamp(24px,4vh,40px) 0;}
.hero+.sec{margin-top:clamp(28px,5vh,48px);}
.sec h3{grid-column:1/3;padding:6px 16px 0 0;}
.sec .body{grid-column:3/7;max-width:680px;}
.sec p{font-size:16px;line-height:1.85;}
.sec p+p{margin-top:.9em;}
.sec .shot{margin-top:24px;}
.sec.pending{border-top-style:dashed;}
.sec.pending p{color:var(--muted);}

.steps{margin-top:16px;}
.steps li{display:grid;grid-template-columns:28px 1fr;gap:10px;padding:12px 0;border-top:1px solid var(--line);font-size:15px;line-height:1.75;list-style:none;}
.steps li i{font-family:var(--mono);font-size:10.5px;color:var(--muted);font-style:normal;padding-top:4px;}

.shot .ph{aspect-ratio:16/10;border-radius:var(--r);overflow:hidden;
  background:repeating-linear-gradient(45deg,transparent 0 7px,rgba(17,17,17,.06) 7px 8px),var(--card);}
.hero .shot .ph{aspect-ratio:16/9;max-height:72vh;width:100%;}
.shot img{width:100%;height:100%;object-fit:cover;display:block;}
/* 有真圖時照原比例完整顯示，不裁切；固定比例只給佔位框用 */
.shot .ph:has(img),.hero .shot .ph:has(img),.shot .ph:has(video),.hero .shot .ph:has(video){aspect-ratio:auto;max-height:none;background:none;}
.shot .ph:has(img) img{height:auto;}
.shot video{width:100%;height:auto;display:block;}
.shot .ph:has(video){position:relative;}
/* 案例內文的圖：half 兩張並排、s 窄版（手機截圖） */
.pair{display:flex;gap:var(--gap);margin-top:24px;align-items:flex-start;}
.pair .shot{margin-top:0 !important;min-width:0;}
.sec .body .shot.s{max-width:300px;}
.snd{position:absolute;top:10px;right:10px;z-index:2;font-family:var(--mono);font-size:10px;letter-spacing:.08em;padding:6px 10px;border:0;border-radius:999px;
  background:rgba(0,0,0,.55);color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);}
.snd[aria-pressed="true"]{background:#fff;color:#111;}
.shot a.full{display:block;cursor:zoom-in;}
.shot figcaption{font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;color:var(--muted);margin-top:8px;}

.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap);border-top:1px solid var(--line);padding:clamp(24px,4vh,40px) 0;}

/* AR 作品牆：桌機每列 4 支、手機 2 支 */
.vidgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:0 var(--wall-pad);gap:clamp(36px,5.5vh,60px) clamp(20px,2.4vw,40px);}
.vidgrid .ph{aspect-ratio:9/16;border-radius:var(--r);overflow:hidden;background:var(--card);position:relative;
  -webkit-touch-callout:none;-webkit-user-select:none;user-select:none;}
/* AR 代表作：一整圈的圓柱，觀者站在圓柱裡往外看。位置由 app.js 依寬度算好（initCarousel） */
.arcar{position:relative;overflow:hidden;padding:clamp(14px,2.5vh,28px) 0 clamp(14px,2.5vh,28px);box-sizing:border-box;
  display:flex;flex-direction:column;justify-content:center;margin:0 calc(var(--pad) * -1);}  /* 滿版：兩側卡片延伸到螢幕邊緣 */
.arcar-stage{position:relative;touch-action:pan-y;cursor:grab;transition:transform .6s var(--e);}
.arcar-ring{position:absolute;left:50%;top:50%;width:0;height:0;transform-style:preserve-3d;transition:transform 1s var(--e);}
.arcar-card{position:absolute;margin:0;cursor:pointer;backface-visibility:hidden;transition:filter 1s var(--e),opacity 1s var(--e);}
.arcar-card .ph{width:100%;height:100%;border-radius:calc(var(--r) * 1.6);overflow:hidden;background:var(--card);}
.arcar-card video{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none;}
.arcar-card.is-cur{cursor:default;}
@media (prefers-reduced-motion:reduce){ .arcar-ring,.arcar-card{transition-duration:.01s;} }

/* 漸層模糊：四層 backdrop-filter 疊起來，越靠外側的層越糊；右側用鏡像共用同一組遮罩 */
.arcar-view{position:relative;}
/* 拖曳中退後，圈圈看起來變大。只縮卡片那層，模糊層不動（backdrop-filter 被縮放會對不準） */
.arcar.dragging .arcar-stage{transform:scale(.84);}
.arcar.dragging .arcar-stage{cursor:grabbing;}
.arcar.dragging .arcar-card{cursor:grabbing;}
.arcar-blur{position:absolute;top:calc(var(--blur-top, 28px) * -1);bottom:-24px;width:calc(50% - var(--clear, 200px) / 2);pointer-events:none;}
.arcar-blur.l{left:0;}
.arcar-blur.r{right:0;transform:scaleX(-1);}
.arcar-blur i{position:absolute;inset:0;}
.arcar-blur i:nth-child(1){-webkit-backdrop-filter:blur(1.5px);backdrop-filter:blur(1.5px);
  -webkit-mask-image:linear-gradient(to left,transparent 0%,#000 30%);mask-image:linear-gradient(to left,transparent 0%,#000 30%);}
.arcar-blur i:nth-child(2){-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);
  -webkit-mask-image:linear-gradient(to left,transparent 22%,#000 55%);mask-image:linear-gradient(to left,transparent 22%,#000 55%);}
.arcar-blur i:nth-child(3){-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  -webkit-mask-image:linear-gradient(to left,transparent 45%,#000 78%);mask-image:linear-gradient(to left,transparent 45%,#000 78%);}
.arcar-blur i:nth-child(4){-webkit-backdrop-filter:blur(11px);backdrop-filter:blur(11px);
  -webkit-mask-image:linear-gradient(to left,transparent 68%,#000 100%);mask-image:linear-gradient(to left,transparent 68%,#000 100%);}

.arcar-info{display:flex;align-items:center;justify-content:center;gap:clamp(16px,3vw,40px);text-align:center;margin-top:clamp(12px,2.2vh,22px);padding:0 var(--pad);}
.arcar-txt{flex:0 1 460px;min-width:0;min-height:10.4em;display:flex;flex-direction:column;justify-content:center;transition:opacity .22s var(--e),transform .22s var(--e);}
.arcar-txt.swap{opacity:0;transform:translateY(6px);}
.arcar-type,.vidgrid-lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.07em;color:var(--muted);font-weight:400;}
.arcar-title{font-size:18px;font-weight:500;letter-spacing:-.01em;margin-top:8px;}
.arcar-text{font-size:14px;line-height:1.75;color:var(--muted);margin-top:8px;}
.arcar-credit{font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;color:var(--muted);margin-top:10px;}
.arcar-credit:empty{display:none;}
.arcar-info button{flex:none;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer;
  transition:border-color .3s var(--e);}
.arcar-info button:hover{border-color:var(--ink);}
.arcar-info svg{width:16px;height:16px;fill:none;stroke:var(--ink);stroke-width:1.5;}
@media (max-width:760px){
  .arcar-info{gap:10px;}
  .arcar-info button{width:34px;height:34px;}
  .arcar-text{font-size:13px;text-wrap:balance;}
  .arcar-text br{display:none;}   /* 手機太窄，手動換行會留下單字，改成自動平均換行 */
}
.vidgrid-lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.07em;color:var(--muted);font-weight:400;}
.arcar-title{font-size:18px;font-weight:500;letter-spacing:-.01em;margin-top:8px;}
.arcar-text{font-size:14px;line-height:1.75;color:var(--muted);margin-top:8px;}
.arcar-credit{font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;color:var(--muted);margin-top:10px;}
.arcar-credit:empty{display:none;}
.vidgrid-lbl{border-top:1px solid var(--line);padding:14px var(--wall-pad) clamp(16px,2.5vh,24px);}


/* 影片進度條（AR 作品牆與案例內文共用）：貼齊影片底部；桌機 hover 出現，手機長按出現（.scrubbing） */
.scrub{position:absolute;left:0;right:0;bottom:0;height:18px;cursor:pointer;opacity:0;transition:opacity .25s var(--e);}
.scrub::before,.scrub i{content:"";position:absolute;left:0;bottom:0;width:100%;height:6px;transition:height .2s var(--e);}
.scrub::before{background:var(--scrub-track);}
.scrub i{background:var(--ink);transform-origin:0 50%;transform:scaleX(0);}
.ph.scrubbing .scrub{opacity:1;}
.ph.scrubbing .scrub::before,.ph.scrubbing .scrub i{height:10px;}
@media (hover:hover) and (pointer:fine){
  .ph:hover .scrub{opacity:1;}
  .scrub:hover::before,.scrub:hover i{height:10px;}
}

.vidgrid img,.vidgrid video{width:100%;height:100%;object-fit:cover;display:block;}
.vidgrid .feature{grid-column:span 2;grid-row:span 2;}
.vidgrid figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.05em;color:var(--ink);margin-top:10px;text-align:center;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.vidgrid figcaption .credit{display:block;margin-top:4px;font-size:10.5px;line-height:1.55;color:var(--muted);white-space:normal;}

.nextcase{
  display:grid;grid-template-columns:repeat(6,minmax(0,1fr));align-items:baseline;width:100%;text-align:left;
  border-top:1px solid var(--line);padding:clamp(28px,5vh,48px) 0 clamp(48px,10vh,96px);
}
.nextcase .lbl{grid-column:1/3;}
.nextcase .ttl{grid-column:3/6;font-size:clamp(20px,2.4vw,32px);font-weight:500;letter-spacing:-.01em;line-height:1.25;
  background-image:linear-gradient(var(--ink),var(--ink));background-repeat:no-repeat;background-position:0 100%;background-size:0% 1px;transition:background-size .5s var(--e);}
.nextcase .ttl i{font-style:normal;font-family:var(--mono);font-size:.5em;color:var(--muted);margin-right:.8em;vertical-align:middle;}
.nextcase:hover .ttl{background-size:100% 1px;}
.nextcase svg{grid-column:6;justify-self:end;width:20px;height:20px;}
.nextcase:active{transform:none;}

@media(max-width:760px){
  .case-head h2{font-size:clamp(26px,7.4vw,34px);}
  .facts{grid-template-columns:repeat(2,minmax(0,1fr));}
  .facts .f-r,.facts .f-m{grid-column:span 2;}
  .sec{grid-template-columns:1fr;}
  .sec h3,.sec .body{grid-column:1;}
  .sec h3{padding:0 0 12px;}
  .sec p{font-size:15px;}
  .gallery{grid-template-columns:1fr;}
  .vidgrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 12px;}
  :root{--wall-pad:8px;}
  .vidgrid .feature{grid-row:auto;}
  .nextcase{grid-template-columns:1fr auto;row-gap:10px;}
  .nextcase .lbl{grid-column:1/3;}
  .nextcase .ttl{grid-column:1;}
  .nextcase svg{grid-column:2;}
}

/* ---------------- mechanism cloud ---------------- */
.cloud{flex:1;min-height:0;position:relative;overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none;}
.cloud::before,.cloud::after{
  content:'';position:absolute;left:0;right:0;height:clamp(32px,12%,72px);z-index:300;pointer-events:none;
  background:linear-gradient(to bottom,var(--bg),var(--cloud-veil) 35%,transparent);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  -webkit-mask-image:linear-gradient(to bottom,var(--ink),transparent);
  mask-image:linear-gradient(to bottom,var(--ink),transparent);
}
.cloud::before{top:0;}
.cloud::after{bottom:0;transform:rotate(180deg);}
.node img{-webkit-user-drag:none;pointer-events:none;}
.cloud{cursor:grab;}
.cloud.grabbing,.cloud.grabbing .node{cursor:grabbing;}
.node{position:absolute;left:0;top:0;translate:-50% -50%;padding:0;will-change:transform,opacity;}
.node:active{transform:none;}
.node .ph{display:block;aspect-ratio:var(--ar);border-radius:4px;overflow:hidden;position:relative;
  background:repeating-linear-gradient(45deg,transparent 0 7px,rgba(17,17,17,.06) 7px 8px),var(--card);
  transition:scale .5s var(--e);}
.node.real .ph{aspect-ratio:auto;background:none;}
.node.cut .ph{overflow:visible;filter:drop-shadow(0 20px 24px rgba(17,17,17,.22));}
.node img{display:block;width:100%;height:auto;}
.node .cap{position:absolute;overflow:hidden;max-height:calc(100% - 12px);left:6px;right:6px;bottom:6px;text-align:left;font-family:var(--mono);font-size:9.5px;letter-spacing:.04em;line-height:1.4;color:var(--muted);}
.node.hl .ph{scale:1.04;}

.cloud-legend{flex:none;display:flex;flex-wrap:wrap;justify-content:center;gap:4px 24px;
  padding:12px var(--pad) max(22px,env(safe-area-inset-bottom));}
.cloud-legend button{font-size:13px;line-height:28px;transition:color .3s var(--e);}
.cloud-legend button i{font-style:normal;font-family:var(--mono);font-size:10.5px;color:var(--muted);margin-right:8px;}
.cloud-legend.hasHl button{color:var(--dim);}
.cloud-legend.hasHl button.hl{color:var(--ink);}

@media(max-width:760px){
  .cloud-legend{justify-content:flex-start;border-top:1px solid var(--line-bar);}
}

/* ---------------- about / contact ---------------- */
.about{max-width:860px;margin:0 auto;padding:clamp(40px,8vh,90px) var(--pad) 96px;}
.about .nm{font-size:clamp(22px,2.6vw,30px);font-weight:500;margin-bottom:28px;}
.about p{font-size:clamp(19px,2vw,25px);font-weight:500;line-height:1.7;color:var(--muted);margin-bottom:22px;}
.about p b{font-weight:500;color:var(--ink);}
.about .rec{margin-top:40px;}
.about .rec h4{font-family:var(--mono);font-size:10.5px;letter-spacing:.07em;color:var(--muted);font-weight:400;margin-bottom:10px;}
.about .rec div{font-size:16px;}
.about .rec div span{color:var(--muted);}

.contact{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;text-align:center;padding:0 var(--pad);}
.contact a.big{
  font-size:clamp(22px,3.6vw,44px);font-weight:500;line-height:1.25;text-decoration:none;word-break:break-all;
  background-image:linear-gradient(var(--ink),var(--ink));background-repeat:no-repeat;
  background-position:0 100%;background-size:0% 1px;transition:background-size .5s var(--e);
}
.contact a.big:hover{background-size:100% 1px;}
.contact .row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;}
.contact .row a,.contact .row button{
  height:52px;padding:0 20px;border-radius:var(--r);border:1px solid var(--line);background:var(--surface);
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;text-decoration:none;}
.contact .row a.solid{background:var(--ink);border-color:var(--ink);color:#fff;}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;}
}

/* 02 螺絲彩蛋 */
.case-head{position:relative;}
.screwkey{position:absolute;top:clamp(36px,8vh,88px);right:0;width:44px;height:44px;padding:0;border:0;background:none;cursor:pointer;
  transition:transform .3s var(--e),opacity .4s var(--e);-webkit-tap-highlight-color:transparent;}
.screwkey img{width:100%;height:auto;display:block;}
.screwkey.done{opacity:0;}
.toast{position:fixed;left:50%;bottom:32px;z-index:200;transform:translate(-50%,12px);opacity:0;pointer-events:none;
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;padding:10px 16px;border-radius:999px;background:var(--ink);color:var(--bg);
  transition:opacity .5s var(--e),transform .5s var(--e);}
.toast.on{opacity:1;transform:translate(-50%,0);}