/* Aron Lab — 色場版：向 Albers《向方形致敬》致意。每個作品一整片平面色場，不用陰影、光暈、玻璃。
   作品色的四個色階都從 --pc 算出來：t1 淺底 → t2 中 → t3 本色 → t4 深（深色模式時反過來變淺）。 */
:root {
  --base: #F4F1EA;      /* 色場混色用的底色 */
  --deep: #0E0E0E;      /* t4 往哪裡混 */
  --tx: #161616; --tx2: rgba(22,22,22,.68); --tx3: rgba(22,22,22,.46);
  --line: rgba(22,22,22,.14);
  --idx-bg: #2E3A5E; --idx-tx: #F1EEE7; --idx-tx2: rgba(241,238,231,.62); --idx-line: rgba(241,238,231,.16); --idx-hi: rgba(241,238,231,.08);
  --cases-bg: #EFE4CC; --media-bg: #1A1A1A; --log-bg: #E6E2D9; --foot-bg: #111111;
  --geo: 'Jost', 'Noto Sans TC', 'Futura', system-ui, sans-serif; --cjk: 'Noto Sans TC', system-ui, sans-serif;
  --gut: 6vw;
  --brand: #F5801C;     /* Aron 的品牌橘（logo 的橫槓） */
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --base: #141414; --deep: #FFFFFF; --tx: #F1EEE7; --tx2: rgba(241,238,231,.7); --tx3: rgba(241,238,231,.46); --line: rgba(241,238,231,.14);
    --idx-bg: #1B2236; --cases-bg: #26211A; --media-bg: #0E0E0E; --log-bg: #1C1C1C; --foot-bg: #000;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --base: #141414; --deep: #FFFFFF; --tx: #F1EEE7; --tx2: rgba(241,238,231,.7); --tx3: rgba(241,238,231,.46); --line: rgba(241,238,231,.14);
  --idx-bg: #1B2236; --cases-bg: #26211A; --media-bg: #0E0E0E; --log-bg: #1C1C1C; --foot-bg: #000;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--base); color: var(--tx); font: 400 16px/1.7 var(--cjk); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid currentColor; outline-offset: 2px; }

/* 作品色階 */
.pc { --t1: color-mix(in oklab, var(--pc) 20%, var(--base)); --t2: color-mix(in oklab, var(--pc) 52%, var(--base)); --t3: var(--pc); --t4: color-mix(in oklab, var(--pc) 62%, var(--deep)); }

/* 方形：內層比外層小一圈，往下偏（Albers 的構圖） */
.sq { position: relative; aspect-ratio: 1; transition: background-color 1.4s cubic-bezier(.4,0,.2,1); }
.sq > .sq { position: absolute; width: 75%; left: 12.5%; top: 18.75%; }

/* ── 頂欄 ── */
/* 頂欄是實色，顏色跟著底下的色場（app.js 設定 --top-bg、--top-fg）。
   以前桌機用 mix-blend-mode: difference，但那會把 logo 的橘色反相，iOS 捲動時也會留殘影 */
.top { position: fixed; top: 0; left: 0; right: 0; z-index: 40; display: flex; align-items: center; gap: 28px; height: 60px; padding: 0 28px; background: var(--top-bg, var(--base)); color: var(--top-fg, var(--tx)); transition: background-color .25s, color .25s; }
.top.over-hero { --top-bg: var(--t1); --top-fg: var(--tx); transition: background-color 1.4s cubic-bezier(.4,0,.2,1); }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; font: 700 17px/1 var(--geo); letter-spacing: .16em; white-space: nowrap; }
/* logo：A 用文字色；橫槓（游標）平常是品牌橘，看到哪個作品就換成那個作品的顏色 */
.logo { display: block; flex: none; overflow: visible; }
.brand .logo { width: 28px; height: 19px; --logo-bar: var(--cursor, var(--brand)); }
.nav { display: flex; gap: 22px; font: 500 14px/1 var(--cjk); letter-spacing: .08em; }
.nav a { padding: 6px 0; border-bottom: 2px solid transparent; }
.nav a.on, .nav a:hover { border-bottom-color: currentColor; }
.seg { display: flex; border: 1.5px solid currentColor; }
.seg button { padding: 5px 10px; border: 0; background: none; color: inherit; font: 500 12px/1 var(--cjk); cursor: pointer; }
.seg button + button { border-left: 1.5px solid currentColor; }
.seg button.on { background: var(--top-fg, var(--tx)); color: var(--top-bg, var(--base)); }
.seg.lang { margin-right: -16px; }
.seg.lang button { font-family: var(--geo); font-weight: 600; }
/* 英文版：app.js 換好字之前先藏起來，避免中文閃一下 */
html[data-lang="en"]:not(.i18n) [data-en], html[data-lang="en"]:not(.i18n) [data-en-html] { visibility: hidden; }
html[lang="en"] .hero h1 small { letter-spacing: .3em; }

/* ── 首屏 ── */
.hero { --pc: #22A57F; position: relative; height: 100svh; min-height: 660px; background: var(--t1); overflow: hidden; transition: background-color 1.4s cubic-bezier(.4,0,.2,1); }
.hero .stage { position: absolute; left: 50%; top: 47%; width: min(64vh, 70vw); transform: translate(-50%, -50%); display: block; }
.hero .s1 { background: var(--t2); } .hero .s2 { background: var(--t3); } .hero .s3 { background: var(--t4); display: grid; place-items: center; }
.hero h1 { margin: 0; text-align: center; color: var(--t1); font: 800 clamp(17px, 2.8vh, 32px)/1 var(--geo); letter-spacing: .2em; transition: color 1.4s; }
/* 首屏的 logo 跟著色場：A 和橫槓都用最淺的色階，和方形是同一組顏色 */
.hero h1 .logo { width: clamp(72px, 13vh, 150px); height: clamp(48px, 8.7vh, 100px); margin: 0 auto clamp(14px, 2.4vh, 26px); --logo-a: var(--t1); --logo-bar: var(--t2); }
.hero h1 .wm { display: block; margin-right: -.2em; }
.hero h1 small { display: block; margin-top: 10px; font: 500 clamp(10px, 1.3vh, 14px)/1.4 var(--cjk); letter-spacing: .5em; }
.hero-bar { position: absolute; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 30px; padding: 0 32px 28px; color: var(--tx); }
.cap p { margin: 0; font: 900 clamp(19px, 1.8vw, 26px)/1.45 var(--cjk); }
.cap span { display: block; margin-top: 6px; font: 300 italic 14px/1.4 var(--geo); color: var(--tx2); }
.stats { display: grid; grid-template-columns: repeat(3, auto); gap: 0; margin: 0; }
.stats div { padding: 0 18px; border-left: 2px solid var(--t4); }
.stats div:first-child { border-left: 0; }
.stats dt { font: 700 clamp(30px, 3vw, 44px)/1 var(--geo); letter-spacing: -.02em; color: var(--t4); }
.stats dd { margin: 4px 0 0; font: 500 12px/1.3 var(--cjk); color: var(--tx2); }
.now { justify-self: end; text-align: right; }
.now .k { font: 500 12px/1 var(--geo); letter-spacing: .2em; text-transform: uppercase; color: var(--tx2); }
.now .k.t { display: block; font: 500 12.5px/1.4 var(--geo); letter-spacing: .04em; text-transform: none; text-wrap: balance; }
.now > b { display: block; margin-top: 6px; font: 700 22px/1.2 var(--geo); }
.live-line b { font-weight: 700; color: var(--tx); }
.live-line { display: block; min-height: 1.5em; margin-top: 2px; font: 500 14px/1.5 var(--geo); color: var(--tx2); }
.dots { display: flex; gap: 6px; justify-content: flex-end; margin-top: 10px; }
.dots button { width: 14px; height: 14px; padding: 0; border: 2px solid var(--t4); background: transparent; cursor: pointer; }
.dots button.on { background: var(--t4); }

/* ── 作品色場 ── */
.field { position: relative; min-height: 100svh; background: var(--t1); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: 6vw; padding: 110px var(--gut) 80px; }
.field .stage { width: min(66vh, 38vw); justify-self: center; display: block; }
.field .s0 { background: var(--t2); } .field .s1 { background: var(--t3); } .field .s2 { background: var(--t4); overflow: hidden; }
.field .s2 img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: left top; opacity: 0; transition: opacity .7s; }
.field .s2 video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .7s; }
.field:hover .s2 img, .field:hover .s2 video, .field.show .s2 img, .field.show .s2 video { opacity: 1; }
.field .glyph { position: absolute; inset: 22%; transition: opacity .5s; }
.field .glyph svg { width: 100%; height: 100%; fill: var(--t1); }
.field:hover .glyph, .field.show .glyph { opacity: 0; }
.info .no { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 14px; font: 500 13px/1.2 var(--geo); letter-spacing: .14em; text-transform: uppercase; }
.info .no .hex { position: relative; width: 14px; height: 14px; padding: 0; border: 0; background: var(--t3); cursor: copy; transition: transform .15s; }
.info .no .hex::before { content: ''; position: absolute; inset: -12px; }
.info .no .hex:hover { transform: scale(1.4); }
.info .st { padding: 4px 9px; background: var(--t2); font: 500 12px/1.2 var(--cjk); letter-spacing: .04em; text-transform: none; }
.info h2 { margin: 22px 0 0; font: 800 clamp(54px, 7vw, 124px)/.88 var(--geo); letter-spacing: -.02em; color: var(--t4); }
.info h2 small { display: block; margin-top: 16px; font: 900 .28em/1 var(--cjk); letter-spacing: .1em; color: var(--tx); }
.info .tag { margin: 28px 0 0; font: 700 clamp(19px, 1.6vw, 24px)/1.55 var(--cjk); max-width: 24em; }
.info .desc { margin: 10px 0 0; max-width: 34em; color: var(--tx2); }
.info .live { display: flex; flex-wrap: wrap; gap: 0; margin-top: 18px; max-width: 560px; }
.info .live span { padding: 9px 14px; background: var(--t2); font: 500 14px/1.3 var(--geo); border-right: 2px solid var(--t1); }
.info .live span b { font-weight: 700; margin-left: 6px; }
.info .live span:last-child { border-right: 0; color: var(--tx2); }
.info .live.wait span { color: var(--tx2); }
.up { color: #0B7A4B; } .down { color: #C0261B; }
:root[data-theme="dark"] .up { color: #5BD79A; } :root[data-theme="dark"] .down { color: #FF7A6E; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .up { color: #5BD79A; } :root:not([data-theme="light"]) .down { color: #FF7A6E; } }
.facts { display: flex; flex-wrap: wrap; gap: 4px 18px; margin: 14px 0 0; padding: 0; list-style: none; font: 400 14px/1.5 var(--geo); color: var(--tx2); }
.facts li::before { content: '■ '; color: var(--t3); font-size: .7em; vertical-align: 2px; }
.blocks { display: flex; flex-wrap: wrap; margin-top: 22px; max-width: 600px; }
.blocks a, .blocks span { padding: 10px 14px; background: var(--t2); font: 700 13.5px/1 var(--cjk); border-right: 2px solid var(--t1); border-bottom: 2px solid var(--t1); }
.blocks a i, .blocks span i { font: 500 11px/1 var(--geo); font-style: normal; margin-right: 6px; opacity: .6; }
.blocks a:hover { background: var(--t4); color: var(--t1); }
.go { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 26px; }
.go a, .go span { display: inline-flex; align-items: center; height: 52px; padding: 0 24px; background: var(--t4); color: var(--base); font: 600 15px/1 var(--geo); letter-spacing: .08em; }
.go a.alt { background: transparent; color: var(--t4); box-shadow: inset 0 0 0 3px var(--t4); }
.go a:hover { background: var(--tx); color: var(--base); box-shadow: none; }
.go .more { height: auto; padding: 0 0 3px; margin-left: 6px; background: none; color: var(--tx); box-shadow: none; border-bottom: 2px solid var(--t4); font: 500 14px/1.3 var(--cjk); letter-spacing: .02em; cursor: pointer; }
.go .more:hover { background: none; color: var(--t4); }
.field.next { --pc: #8A8A8A; min-height: 60svh; grid-template-columns: 1fr; text-align: center; }
.field.next .stage { width: min(40vh, 60vw); }
.field.next .s0, .field.next .s1, .field.next .s2 { background: transparent; box-shadow: inset 0 0 0 2px var(--t4); }
.field.next h2 { margin: 30px 0 0; font: 800 clamp(36px, 4vw, 60px)/1 var(--geo); color: var(--t4); }
.field.next p { margin: 10px 0 0; color: var(--tx2); }

/* ── 通用章節 ── */
.sec { padding: 110px var(--gut) 100px; }
.sec-h { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 34px; }
.sec-h .no { font: 500 15px/1 var(--geo); letter-spacing: .14em; opacity: .7; }
.sec-h h2 { margin: 0; font: 900 clamp(40px, 5vw, 76px)/1 var(--cjk); letter-spacing: .02em; }
.sec-h .en { font: 300 italic clamp(22px, 2.4vw, 34px)/1 var(--geo); opacity: .7; }
.sec-h .count { margin-left: auto; font: 500 14px/1 var(--geo); letter-spacing: .08em; opacity: .7; }

/* ── 索引（深藍色場） ── */
.idx-sec { background: var(--idx-bg); color: var(--idx-tx); }
.idx-tools { display: grid; gap: 12px; margin-bottom: 18px; }
.search { display: flex; align-items: center; gap: 12px; height: 54px; padding: 0 18px; max-width: 620px; background: var(--idx-tx); color: #161616; }
.search svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; opacity: .55; }
.search input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; font: 500 16px/1 var(--cjk); color: #161616; }
.search kbd { font: 500 12px/1 var(--geo); padding: 4px 7px; border: 1.5px solid rgba(22,22,22,.3); }
.chips { display: flex; flex-wrap: wrap; gap: 0; }
.chips button { display: inline-flex; align-items: center; gap: 8px; height: 36px; padding: 0 14px; border: 0; border-right: 2px solid var(--idx-bg); border-bottom: 2px solid var(--idx-bg); background: var(--idx-hi); color: var(--idx-tx); font: 500 13.5px/1 var(--cjk); cursor: pointer; }
.chips button:hover { background: rgba(241,238,231,.16); }
.chips button.on { background: var(--idx-tx); color: #161616; }
.chips button .sw { width: 10px; height: 10px; flex: none; }
.chips button .n { font: 500 11.5px/1 var(--geo); opacity: .6; }
.idx { border-top: 2px solid var(--idx-tx); }
.ir { display: grid; grid-template-columns: 200px minmax(0, 1.3fr) 110px minmax(0, 1fr) 24px; gap: 18px; align-items: center; min-height: 50px; padding: 0 10px; border-bottom: 1px solid var(--idx-line); }
.ir.head { min-height: 38px; font: 500 12px/1 var(--geo); letter-spacing: .16em; text-transform: uppercase; color: var(--idx-tx2); }
.ir.grp { border-top: 1px solid rgba(241,238,231,.32); }
a.ir:hover { background: var(--idx-hi); }
a.ir:hover .go2 { transform: translate(3px, -3px); }
.ir .pn { display: flex; align-items: center; gap: 10px; font: 600 15px/1.2 var(--geo); }
.ir .pn .sw { width: 14px; height: 14px; flex: none; }
.ir .pn small { font: 500 12px/1 var(--cjk); color: var(--idx-tx2); }
.ir .pn.rep { visibility: hidden; }
.ir .t { font: 700 14.5px/1.35 var(--cjk); padding: 12px 0; }
.ir .t i { font: 500 12px/1 var(--geo); font-style: normal; color: var(--idx-tx2); margin-right: 8px; }
.ir .ty { justify-self: start; padding: 4px 8px; background: var(--idx-hi); font: 500 12px/1.2 var(--cjk); white-space: nowrap; }
.ir .ty.local { background: #D9A441; color: #161616; }
.ir .ty.archive, .ir .ty.legacy { background: transparent; box-shadow: inset 0 0 0 1px var(--idx-line); color: var(--idx-tx2); }
.ir .u { font: 400 13px/1.3 var(--geo); color: var(--idx-tx2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ir .go2 { text-align: right; transition: transform .15s; }
.ir.nolink .go2 { visibility: hidden; }
.ir mark { background: #F4C918; color: #161616; }
.idx-empty { padding: 40px 10px; text-align: center; color: var(--idx-tx2); }
.ir.fold-row { display: block; min-height: 0; padding: 0; }
.fold-row button { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 14px; width: 100%; padding: 13px 10px 13px 228px; border: 0; background: transparent; color: var(--idx-tx); text-align: left; font: 700 13.5px/1.3 var(--cjk); cursor: pointer; }
.fold-row button:hover { background: var(--idx-hi); }
.fold-row button[aria-expanded="true"] { color: var(--idx-tx2); }
.fold-row span { font: 500 12.5px/1.3 var(--cjk); color: var(--idx-tx2); }
.fold-row i { font-style: normal; white-space: nowrap; }
.fold-all { align-self: center; height: 32px; padding: 0 14px; border: 0; background: var(--idx-hi); color: var(--idx-tx); font: 500 13px/1 var(--cjk); cursor: pointer; }
.fold-all:hover { background: rgba(241,238,231,.16); }

/* ── 作品集（赭黃色場） ── */
.cases-sec { background: var(--cases-bg); }
.cases { display: grid; grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); gap: 3px; }
.case { background: var(--t1); display: flex; flex-direction: column; }
.case .cv { display: block; aspect-ratio: 16/10; background: var(--t2); overflow: hidden; position: relative; }
.case .cv img { width: 100%; height: 100%; object-fit: cover; object-position: left top; mix-blend-mode: multiply; filter: grayscale(.6); transition: filter .6s, mix-blend-mode .6s; }
.case:hover .cv img { filter: none; mix-blend-mode: normal; }
.case .b { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.case .sub { display: flex; align-items: center; gap: 10px; font: 500 12px/1.2 var(--geo); letter-spacing: .14em; text-transform: uppercase; }
.case .sub i { width: 12px; height: 12px; background: var(--t4); }
.case h3 { margin: 14px 0 0; font: 900 24px/1.3 var(--cjk); }
.case p { margin: 8px 0 0; font-size: 14.5px; color: var(--tx2); }
.case dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 16px 0 0; padding-top: 14px; border-top: 2px solid var(--t2); font-size: 13.5px; }
.case dt { font: 500 12px/1.8 var(--geo); letter-spacing: .1em; color: var(--tx2); }
.case dd { margin: 0; font-weight: 700; }
.case .ch { display: flex; flex-wrap: wrap; margin-top: 14px; }
.case .ch a { padding: 7px 10px; background: var(--t2); font: 500 12.5px/1 var(--cjk); border-right: 2px solid var(--t1); border-bottom: 2px solid var(--t1); }
.case .ch a:hover { background: var(--t4); color: var(--t1); }
.case .go { margin-top: auto; padding-top: 20px; }
.case .go a { height: 46px; }

/* ── 宣傳素材（炭黑色場） ── */
.media-sec { background: var(--media-bg); color: #F1EEE7; }
.mk { --sh: 460px; }
.mk + .mk { margin-top: 60px; }
.mk-head { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 20px; }
.mk-head .sq1 { width: 46px; height: 46px; background: var(--t3); position: relative; }
.mk-head .sq1::after { content: ''; position: absolute; width: 60%; height: 60%; left: 20%; top: 30%; background: var(--t4); }
.mk-head h3 { margin: 0; font: 800 34px/1 var(--geo); letter-spacing: -.01em; }
.mk-head h3 small { margin-left: 10px; font: 900 15px/1 var(--cjk); opacity: .7; }
.mk-head .meta { font: 400 14px/1.4 var(--geo); opacity: .7; }
.mk-dl { display: flex; gap: 0; margin-left: auto; }
.mk-dl a { display: inline-flex; align-items: center; height: 44px; padding: 0 16px; background: var(--t3); color: #111; font: 600 13.5px/1 var(--geo); letter-spacing: .06em; border-right: 2px solid var(--media-bg); }
.mk-dl a:hover { background: #F1EEE7; }
.mk-nav { display: flex; }
.mk-nav button { width: 44px; height: 44px; border: 0; background: rgba(241,238,231,.1); color: #F1EEE7; cursor: pointer; font: 500 16px/1 var(--geo); }
.mk-nav button + button { margin-left: 2px; }
.mk-nav button:hover { background: #F1EEE7; color: #111; }
.mk-note { margin: 12px 0 0; font-size: 13.5px; opacity: .6; }
.strip { display: flex; gap: 14px; margin-top: 18px; padding-bottom: 14px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: rgba(241,238,231,.25) transparent; }
/* 寬度直接用高度 × 比例算：iOS Safari 不會把 aspect-ratio 算進 flex 項目和按鈕的寬度 */
.m-fig { flex: none; width: calc(var(--sh) * (var(--ar))); margin: 0; scroll-snap-align: start; }
.m-item { position: relative; display: block; width: 100%; height: var(--sh); padding: 0; border: 0; background: #000; overflow: hidden; cursor: zoom-in; }
.m-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s cubic-bezier(.2,.7,.2,1); }
button.m-item:hover img { transform: scale(1.02); }
.m-fig figcaption { margin-top: 10px; font: 700 13px/1.45 var(--cjk); }
.m-fig figcaption i { display: block; font: 500 11px/1.4 var(--geo); font-style: normal; letter-spacing: .1em; opacity: .55; }
.m-video { cursor: default; box-shadow: inset 0 0 0 3px var(--t3); }
.m-video video { width: 100%; height: 100%; object-fit: cover; }
.m-play { position: absolute; inset: 0; width: 100%; border: 0; background: transparent; cursor: pointer; }
.m-play span { position: absolute; left: 50%; top: 50%; width: 60px; height: 60px; margin: -30px 0 0 -30px; background: var(--t3); transition: opacity .2s; }
.m-play span::after { content: ''; position: absolute; left: 24px; top: 19px; border-style: solid; border-width: 11px 0 11px 17px; border-color: transparent transparent transparent #111; }
.m-video.playing .m-play span { opacity: 0; }
.m-video.playing:hover .m-play span { opacity: 1; }
.m-video.playing .m-play span::after { left: 21px; top: 20px; width: 6px; height: 20px; border: 0; border-left: 6px solid #111; border-right: 6px solid #111; box-sizing: content-box; }
/* 橫式影片：高度最多 --sh，螢幕窄的時候縮到剛好放得下整個寬度 */
.m-fig.wide { --vh: min(var(--sh), calc((100vw - 2 * var(--gut)) / (var(--ar)))); width: calc(var(--vh) * (var(--ar))); }
.m-fig.wide .m-item { height: var(--vh); }
.m-snd { position: absolute; top: 12px; right: 12px; z-index: 1; display: grid; place-items: center; width: 40px; height: 40px; padding: 0; border: 0; background: var(--t3); color: #111; cursor: pointer; }
.m-snd:hover { background: #F1EEE7; }
.m-snd svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.m-snd .spk { fill: currentColor; }
.m-snd .on, .m-snd[aria-pressed="true"] .off { display: none; }
.m-snd[aria-pressed="true"] .on { display: inline; }

.lb { width: 100vw; height: 100vh; max-width: none; max-height: none; margin: 0; padding: 0; border: 0; background: transparent; color: #F1EEE7; }
.lb::backdrop { background: rgba(10,10,10,.94); }
.lb[open] { display: grid; place-items: center; }
.lb figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 12px; pointer-events: none; }
.lb img { max-width: min(92vw, 1100px); max-height: 84vh; object-fit: contain; pointer-events: auto; }
.lb figcaption { display: flex; gap: 14px; font: 700 14px/1.4 var(--cjk); }
.lb figcaption span:last-child { font: 400 13px/1.4 var(--geo); opacity: .6; }
.lb-btn { position: fixed; width: 50px; height: 50px; border: 0; background: rgba(241,238,231,.12); color: #F1EEE7; font: 500 18px/1 var(--geo); cursor: pointer; }
.lb-btn:hover { background: #F1EEE7; color: #111; }
.lb-prev { left: 20px; top: 50%; margin-top: -25px; } .lb-next { right: 20px; top: 50%; margin-top: -25px; } .lb-close { right: 20px; top: 20px; }

/* ── 彩蛋與快捷鍵視窗 ── */
.egg-link { padding: 0; border: 0; background: none; font: inherit; color: inherit; cursor: pointer; text-decoration: underline dotted 1px; text-underline-offset: 3px; }
.egg-link:hover { color: var(--tx); text-decoration-style: solid; }
.pop { width: min(560px, calc(100vw - 32px)); max-height: calc(100svh - 32px); margin: auto; padding: 0; border: 0; background: var(--base); color: var(--tx); }
.pop::backdrop { background: rgba(10,10,10,.62); }
.pop-in { padding: 30px; }
.pop-k { margin: 0; font: 500 12px/1 var(--geo); letter-spacing: .18em; text-transform: uppercase; color: var(--tx2); }
.pop h2 { margin: 12px 0 0; font: 900 clamp(21px, 3vw, 27px)/1.35 var(--cjk); }
.pop-act { display: flex; gap: 2px; margin-top: 24px; }
.pop-act button { height: 44px; padding: 0 18px; border: 0; background: var(--line); color: var(--tx); font: 700 14px/1 var(--cjk); cursor: pointer; }
.pop-act button.pri { background: var(--tx); color: var(--base); }
/* 同色錯覺：兩個小方形同一個顏色，底色一亮一暗；拿掉底色後再用一條同色的橋接起來 */
.egg-pair { --g1: #F2C230; --g2: #2B2766; --s: #8C7B6B; position: relative; display: grid; grid-template-columns: 1fr 1fr; margin-top: 22px; }
.egg-g { aspect-ratio: 1; display: grid; place-items: center; transition: background-color .9s cubic-bezier(.4,0,.2,1); }
.egg-g:first-child { background: var(--g1); } .egg-g:last-child { background: var(--g2); }
.egg-g i { width: 26%; aspect-ratio: 1; background: var(--s); }
.egg-pair::after { content: ''; position: absolute; left: 25%; right: 25%; top: 37%; height: 26%; background: var(--s); opacity: 0; transition: opacity .5s; }
.egg-pair.reveal .egg-g { background: var(--base); }
.egg-pair.reveal::after { opacity: 1; transition-delay: .7s; }
.egg-a { margin: 16px 0 0; font-size: 15px; color: var(--tx2); }
.keys dl { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 12px 20px; margin: 22px 0 0; }
.keys dt { white-space: nowrap; color: var(--tx2); }
.keys dd { margin: 0; font-size: 15px; }
.keys kbd { display: inline-block; min-width: 30px; padding: 6px 8px; border: 1.5px solid var(--line); font: 600 13px/1 var(--geo); text-align: center; color: var(--tx); }
.keys-hint { margin: 20px 0 0; font-size: 14px; color: var(--tx2); }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 70; max-width: calc(100vw - 32px); padding: 12px 18px; background: var(--tx); color: var(--base); outline: 1px solid rgba(140,140,140,.45); font: 700 13.5px/1.35 var(--cjk); opacity: 0; transform: translate(-50%, 14px); pointer-events: none; transition: opacity .2s, transform .2s; }
.toast.on { opacity: 1; transform: translate(-50%, 0); }

/* ── 時間軸（暖灰色場） ── */
.log-sec { background: var(--log-bg); }
.gantt { position: relative; padding: 34px 0 6px; }
.g-axis { position: absolute; top: 0; bottom: 0; left: 170px; right: 0; pointer-events: none; }
.g-tick { position: absolute; top: 0; bottom: 0; border-left: 1px solid var(--line); }
.g-tick span { position: absolute; top: 0; left: 6px; font: 500 12px/1 var(--geo); letter-spacing: .06em; color: var(--tx2); white-space: nowrap; }
.g-tick.today { border-left: 2px solid var(--tx); }
.g-tick.today span { left: auto; right: 8px; color: var(--tx); font-weight: 700; }
.g-row { display: grid; grid-template-columns: 170px 1fr; align-items: center; height: 46px; }
.g-row .l { display: flex; align-items: center; gap: 10px; font: 600 15px/1 var(--geo); white-space: nowrap; overflow: hidden; }
.g-row .l i { width: 12px; height: 12px; flex: none; background: var(--t3); }
.g-track { position: relative; height: 100%; }
.g-bar { position: absolute; top: 12px; height: 22px; background: var(--t3); display: block; }
.g-bar::after { content: ''; position: absolute; left: 0; top: 30%; bottom: 0; width: 100%; background: var(--t4); opacity: .0; transition: opacity .2s; }
.g-bar:hover::after { opacity: .35; }
.g-bar.private { background: repeating-linear-gradient(90deg, var(--t3) 0 6px, transparent 6px 10px); }
.g-dot { position: absolute; top: 17px; width: 12px; height: 12px; margin-left: -6px; background: var(--t4); }
.log { list-style: none; margin: 34px 0 0; padding: 0; border-top: 2px solid var(--tx); }
.log li { display: grid; grid-template-columns: 150px 180px minmax(0, 1fr); gap: 18px; align-items: baseline; padding: 14px 6px; border-bottom: 1px solid var(--line); }
.log time { font: 500 14px/1.4 var(--geo); color: var(--tx2); letter-spacing: .04em; }
.log .lp { display: flex; align-items: center; gap: 10px; font: 600 15px/1.4 var(--geo); }
.log .lp i { width: 10px; height: 10px; background: var(--t3); flex: none; }
.log .lt { font-size: 15px; }
.log li.start .lt::before { content: '開工'; display: inline-block; margin-right: 10px; padding: 2px 7px; background: var(--tx); color: var(--base); font: 700 12px/1.4 var(--cjk); vertical-align: 1px; }

/* ── 頁尾 ── */
.foot { background: var(--foot-bg); color: #F1EEE7; padding: 90px var(--gut) 50px; }
.foot-top { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; flex-wrap: wrap; }
.foot h2 { margin: 0; font: 800 clamp(56px, 9vw, 150px)/.86 var(--geo); letter-spacing: -.02em; }
.foot-tray { display: flex; gap: 0; }
.foot-tray button { width: 38px; height: 38px; padding: 0; border: 0; cursor: copy; transition: transform .15s, background-color .4s; }
.foot-tray button:hover { transform: translateY(-5px); }
.foot-tray .nx { background: transparent; box-shadow: inset 0 0 0 2px #F1EEE7; cursor: pointer; }
.foot-tray .nx.on { box-shadow: none; }
#next-no { transition: color .4s; }
.foot-note .keys-link { opacity: 1; }
.keys-link button { padding: 0; border: 0; background: none; color: inherit; font: inherit; font-size: 13.5px; opacity: .7; cursor: pointer; }
.keys-link button:hover { opacity: 1; }
.keys-link kbd { padding: 1px 6px; border: 1.5px solid rgba(241,238,231,.4); font: 600 12px/1.4 var(--geo); }
@media (hover: none) { .keys-link { display: none; } }
.foot-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, 1.3fr); gap: 30px; margin-top: 60px; padding-top: 24px; border-top: 2px solid rgba(241,238,231,.2); }
.foot h3 { margin: 0 0 12px; font: 500 12px/1 var(--geo); letter-spacing: .18em; text-transform: uppercase; opacity: .6; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.foot li a { font-weight: 700; font-size: 14.5px; display: inline-flex; align-items: center; gap: 10px; }
.foot li a:hover { text-decoration: underline; text-underline-offset: 4px; }
.foot li a i { width: 10px; height: 10px; flex: none; }
.foot-note p { margin: 0 0 8px; font-size: 13.5px; opacity: .7; }
.foot-sign { display: flex; align-items: center; gap: 14px; margin-top: 56px; font: 600 13px/1 var(--geo); letter-spacing: .16em; text-transform: uppercase; }
.foot-sign .logo { width: 48px; height: 32px; --logo-a: #F1EEE7; }
.foot-sign .c { font-weight: 400; opacity: .5; }

@media (prefers-reduced-motion: reduce) { .sq, .hero, .hero * { transition: none !important; } html { scroll-behavior: auto; } }

@media (max-width: 1100px) {
  .ir { grid-template-columns: 170px minmax(0, 1.4fr) 96px minmax(0, 1fr) 20px; }
  .fold-row button { padding-left: 198px; }
  .cases { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  :root { --gut: 20px; }
  .top { padding: 0 16px; gap: 12px; height: 54px; }
  .seg button { padding: 5px 8px; }
  /* 手機上語言只留「另一種」，按一下就切過去，省下頂欄的寬度 */
  .seg.lang { margin-right: -4px; }
  .seg.lang button.on { display: none; }
  .seg.lang button { border-left: 0; }
  .nav { display: none; }
  /* 手機上方形和說明改成上下排，說明有三列，用絕對定位會疊到方形 */
  .hero { display: flex; flex-direction: column; height: auto; min-height: 100svh; }
  .hero .stage { position: relative; left: auto; top: auto; flex: none; width: min(78vw, 48svh); margin: 84px auto 0; transform: none; }
  .hero-bar { position: relative; margin-top: auto; grid-template-columns: 1fr; gap: 18px; padding: 32px 20px 22px; }
  .stats { grid-template-columns: repeat(3, auto); justify-content: start; }
  .stats div { padding: 0 12px; } .stats div:first-child { padding-left: 0; }
  .stats dt { font-size: 26px; }
  .now { justify-self: start; text-align: left; }
  .dots { justify-content: flex-start; }
  .field { grid-template-columns: minmax(0, 1fr); padding: 90px 20px 60px; gap: 36px; }
  .field .stage { width: 72vw; }
  .info h2 { font-size: 15vw; }
  .sec { padding: 80px 20px 70px; }
  .sec-h .count { margin-left: 0; width: 100%; }
  .chips { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin: 0 -20px; padding: 0 20px; }
  .chips::-webkit-scrollbar { display: none; }
  .chips button { flex: none; }
  .ir { grid-template-columns: minmax(0, 1fr) auto 18px; grid-template-areas: "pn pn pn" "t ty go" "u u u"; gap: 4px 12px; padding: 12px 6px; }
  .ir.head { display: none; }
  .ir .pn { grid-area: pn; } .ir .pn.rep { display: none; }
  .ir:not(.grp) { grid-template-areas: "t ty go" "u u u"; }
  .ir .t { grid-area: t; padding: 0; } .ir .ty { grid-area: ty; } .ir .go2 { grid-area: go; } .ir .u { grid-area: u; }
  .fold-row button { padding: 13px 6px; }
  .mk { --sh: 340px; }
  .strip { margin: 18px -20px 0; padding: 0 20px 14px; scroll-padding: 0 20px; }
  .mk-dl { margin-left: 0; width: 100%; }
  .mk-nav { display: none; }
  .g-axis { left: 108px; }
  .g-row { grid-template-columns: 108px 1fr; }
  .g-row .l { font-size: 13px; }
  .g-tick span { font-size: 10.5px; }
  .log li { grid-template-columns: 1fr; gap: 4px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-note { grid-column: 1 / -1; }
  .lb-prev, .lb-next { top: auto; bottom: 20px; margin-top: 0; }
}

@media (max-width: 400px) {
  .brand { gap: 10px; font-size: 15px; letter-spacing: .12em; }
  .brand .logo { width: 25px; height: 17px; }
}