/* ===========================================================
   Lumina Source — main
   版面隱喻：攝影棚無縫背景紙（cyclorama），不是網頁底色。
   每個 section 是同一張背景紙上的不同打光。
   =========================================================== */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 背景紙本身：固定不捲動的燈光場，內容在它上面移動 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(90% 55% at 50% -8%,  var(--paper-hi) 0%, transparent 62%),
    radial-gradient(70% 45% at 82% 42%,  rgba(215,111,104,.13) 0%, transparent 60%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper-mid) 62%, var(--paper-lo) 100%);
}

img, video { max-width: 100%; display: block; }

h1, h2, h3 { margin: 0; font-family: var(--font-display); font-weight: 600; line-height: 1.02; letter-spacing: -0.025em; }
p { margin: 0; }
a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--paper-hi);
  padding: var(--s-2) var(--s-3); z-index: 999; border-radius: 0 0 var(--radius) 0;
}
.skip:focus { left: 0; }

/* --- 共用 ------------------------------------------------- */

.wrap { width: 100%; max-width: var(--max-w); margin-inline: auto; padding-inline: var(--gutter); }

.section { padding-block: var(--section-y); }

.label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.tc { font-family: var(--font-tc); letter-spacing: 0.02em; }

.lead { font-size: var(--fs-lead); line-height: 1.5; max-width: var(--measure); color: var(--ink); }

/* --- Header ---------------------------------------------- */

.header {
  position: sticky; top: 0; z-index: var(--z-header);
  backdrop-filter: blur(14px) saturate(1.1);
  background: linear-gradient(180deg, rgba(228,225,235,.82), rgba(228,225,235,0));
}
.header__inner {
  display: flex; align-items: center; gap: var(--s-3);
  min-height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; min-height: 44px; text-decoration: none; margin-right: auto; }
.brand__mark { width: 26px; height: 32px; object-fit: contain; }
.brand__name { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; letter-spacing: -0.02em; white-space: nowrap; }

.nav { display: flex; align-items: center; gap: clamp(14px, 2vw, 28px); }
.nav a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; font-size: var(--fs-small); color: var(--ink-soft); transition: color var(--dur-fast); }
.nav a:hover { color: var(--ink); }

.lang { display: flex; gap: 2px; font-family: var(--font-mono); font-size: var(--fs-label); }
.lang button {
  font: inherit; border: 0; background: none; cursor: pointer;
  min-height: 44px; min-width: 38px; padding: 6px 8px;
  color: var(--ink-faint); border-radius: 6px;
}
.lang button[aria-pressed="true"] { color: var(--ink); background: rgba(27,36,64,.08); }

/* --- 按鈕 ------------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 22px;
  font-family: var(--font-body); font-size: var(--fs-small); font-weight: 500;
  border-radius: 999px; border: 1px solid var(--ink);
  background: var(--ink); color: var(--paper-hi);
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-soft), box-shadow var(--dur-fast);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(27,36,64,.22); }
.btn:active { transform: translateY(0); }
.btn--ghost { background: transparent; color: var(--ink); border-color: rgba(27,36,64,.55); }
.btn--ghost:hover { border-color: var(--ink); box-shadow: none; }

/* --- Hero：滿版輪播 + 呼吸收尾 ---------------------------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding-block: var(--s-7) var(--s-5);
  overflow: hidden;
}

.hero__stage { position: absolute; inset: 0; z-index: 0; }

.hero__slide {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 900ms var(--ease-soft);
}
.hero__slide.is-on { opacity: 1; }

/* 最後一格是 Fal 產的 5 秒 loop 影片，不再用靜態模仿動態 */

/* 壓字用的漸層遮罩：影片亮起來時字才不會消失 */
.hero__scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(20,22,38,.40) 0%, rgba(20,22,38,0) 30%),
    linear-gradient(90deg,  rgba(20,22,38,.80) 0%, rgba(20,22,38,.60) 30%, rgba(20,22,38,.28) 58%, rgba(20,22,38,0) 92%),
    linear-gradient(0deg,   rgba(20,22,38,.72) 0%, rgba(20,22,38,.34) 42%, rgba(20,22,38,0) 78%);
}

.hero__type { position: relative; z-index: 1; display: grid; gap: var(--s-3); color: #FFF; }
.slogan {
  font-size: var(--fs-display);
  font-weight: 600;
  max-width: 16ch; width: fit-content;   /* 盒寬貼合文字，遮罩才量得準 */
  font-stretch: 92%;
  text-wrap: balance;
}
.hero__type .lead { color: rgba(255,255,255,.9); max-width: 44ch; }

.hero__controls {
  position: relative; z-index: 1;
  margin-top: var(--s-5);
  display: flex; align-items: center; gap: var(--s-3); flex-wrap: wrap;
}
.dots { display: flex; gap: 10px; }
.dots button {
  width: 44px; height: 44px; padding: 0;
  border: 0; background: none; cursor: pointer;
  display: grid; place-items: center;
}
.dots button::before {
  content: ""; display: block;
  width: 26px; height: 3px; border-radius: 2px;
  background: rgba(255,255,255,.45);
  transition: background var(--dur-fast);
}
.dots button[aria-selected="true"]::before { background: #FFF; }
.dots button:hover::before { background: rgba(255,255,255,.8); }

.replay {
  font-family: var(--font-mono); font-size: var(--fs-label);
  letter-spacing: .14em; text-transform: uppercase;
  background: none; border: 0; border-bottom: 1px solid rgba(27,36,64,.3);
  color: var(--ink-soft); cursor: pointer;
  min-height: 44px; padding: 4px 0;
}
.hero .replay { color: rgba(255,255,255,.85); border-bottom-color: rgba(255,255,255,.45); }
.hero .replay:hover { color: #FFF; border-bottom-color: #FFF; }

/* --- 進場 ------------------------------------------------- */

/* 截圖審稿用（?allin）：進場狀態直接到位，並把 100svh 鎖成固定高，
   否則長視窗全頁截圖時 Hero 會跟著視窗一起長高、把其他區段推出畫面。 */
.all-in .reveal, .all-in .creed__line, .all-in .hero__sub { opacity: 1 !important; transform: none !important; }
.all-in { scroll-behavior: auto; }
.all-in .hero { min-height: 860px; height: 860px; }
.all-in .sols__stage { position: static; }        /* sticky 在長視窗全頁截圖會黏在頁首 */
.all-in .sol { min-height: 0; }

.reveal { opacity: 0; transform: translateY(20px); }
.reveal.in { opacity: 1; transform: none; transition: opacity 520ms var(--ease-soft), transform 620ms var(--ease-out); }

/* --- Who we are：三層信念 + 敘事捲動 ---------------------- */

/* 橫幅排列：吃滿容器寬，字級才放得大；下方步驟因此更貼近 */
.creed { display: grid; gap: 2px; margin-top: var(--s-3); max-width: none; }
.creed__line {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5.1vw, 4.4rem);
  font-weight: 500; line-height: 1.08; letter-spacing: -0.03em;
  text-wrap: balance;
  opacity: 0; transform: translateY(20px);
}
.creed.in .creed__line { opacity: 1; transform: none; transition: opacity 540ms var(--ease-soft), transform 640ms var(--ease-out); }
.creed.in .creed__line:nth-child(1) { transition-delay: 0ms; }
.creed.in .creed__line:nth-child(2) { transition-delay: 130ms; }
.creed.in .creed__line:nth-child(3) { transition-delay: 260ms; }
.creed__line--sub {
  font-size: var(--fs-lead); font-family: var(--font-body); font-weight: 400;
  line-height: 1.5; max-width: 58ch; letter-spacing: 0;
  margin-top: var(--s-3); color: var(--ink-soft);
}

.story { margin-top: clamp(20px, 2.5vw, 36px); display: grid; gap: clamp(16px, 2vw, 30px); }

.story__viewer {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper-mid);
  box-shadow: 0 26px 60px -32px rgba(27,36,64,.55);
}
.story__frames { position: relative; aspect-ratio: 16/9; }
.story__frame {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity 400ms var(--ease-soft);
}
.story__frame.is-on { opacity: 1; }

.story__steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.story__step {
  display: grid; gap: 3px;
  padding-left: var(--s-2);
  border-left: 2px solid rgba(27,36,64,.16);
  color: var(--ink-soft);
  transition: color var(--dur-mid), border-color var(--dur-mid);
}
/* 用顏色與邊界區分作用中，不用 opacity —— 透明度會把對比一起稀釋掉 */
.story__step.is-on { color: var(--ink); border-left-color: var(--ink); }
.story__step.is-on .label { color: var(--ink); }
.story__step p { font-size: var(--fs-small); line-height: 1.45; max-width: 38ch; }

/* --- Solutions：sticky 舞台 + 逐步捲動 -------------------- */

.sols { display: grid; gap: clamp(24px, 4vw, 56px); margin-top: var(--s-5); }

.sols__stage { position: relative; }
.sols__frames {
  position: relative; aspect-ratio: 1/1;
  border-radius: var(--radius-lg); overflow: hidden;
  background: var(--paper-mid);
  box-shadow: 0 24px 54px -30px rgba(27,36,64,.55);
}
.sols__img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transform: scale(1.04);
  transition: opacity 420ms var(--ease-soft), transform 620ms var(--ease-out);
}
.sols__img.is-on { opacity: 1; transform: scale(1); }

.sols__list { list-style: none; margin: 0; padding: 0; display: grid; }

.sol {
  display: grid; gap: var(--s-1); align-content: center;
  color: var(--ink-soft);
  transition: color 320ms var(--ease-soft);
}
.sol__idx {
  font-family: var(--font-mono); font-size: var(--fs-label);
  letter-spacing: .16em; color: var(--ink-soft);
  transition: color 320ms var(--ease-soft);
}
.sol__title {
  font-size: clamp(1.6rem, 3.1vw, 2.55rem);
  font-family: var(--font-display); font-weight: 600; letter-spacing: -0.03em;
  color: var(--ink);
}
.sol__tc { font-family: var(--font-tc); font-size: var(--fs-small); }
.sol__thesis {
  font-family: var(--font-display);
  font-size: var(--fs-lead); font-weight: 500; line-height: 1.35;
  max-width: 30ch; margin-top: var(--s-2);
  padding-left: var(--s-3);
  border-left: 2px solid var(--coral-deep);
  color: var(--ink);
}
.sol__body { font-size: var(--fs-body); line-height: 1.55; max-width: 42ch; margin-top: var(--s-3); }

/* 作用中的那一段亮起來，其餘退為次級墨（不用 opacity，對比才不會被稀釋） */
.sol.is-on .sol__idx { color: var(--coral-ink); }

@media (min-width: 900px) {
  .story { grid-template-columns: 3fr 2fr; align-items: center; }
  .sols { grid-template-columns: 1fr 1fr; gap: clamp(40px, 5vw, 88px); align-items: start; }
  .sols__stage { position: sticky; top: 96px; }
  .sol { min-height: 78vh; padding-block: var(--s-5); }
}

/* --- Works：橫式卡片滑軌（深底，給整頁一個明度落差）-------- */

#work {
  position: relative;
  /* 實色底不可省：漸層只是 background-image，缺了它下層淺色會透出來 */
  background-color: #1B2036;
  background-image: linear-gradient(180deg, #171B2E 0%, #1B2036 62%, #191D30 100%);
  color: var(--paper-hi);
}
#work .label { color: #A6ABC4; }              /* 6.1:1 on #1B2036 */
#work .work__brand { color: #FFF; }
#work .work__name { color: #C9CDDD; }
#work .rail-btn { border-color: rgba(255,255,255,.42); color: var(--paper-hi); }
#work .rail-btn:hover { background: rgba(255,255,255,.12); }
#work .rail-btn[disabled] { opacity: .32; }
#work .works::-webkit-scrollbar-thumb { background: rgba(255,255,255,.28); }
#work .work__media { background: #23283F; box-shadow: 0 24px 54px -26px rgba(0,0,0,.6); }
#work .work:hover .work__brand { color: var(--amber); }
#work .work__brand { transition: color var(--dur-fast); }
#work .works:focus-visible { outline-color: var(--paper-hi); }


.works__head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--s-3); }
.works__count { font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: .14em; text-transform: uppercase; color: #A6ABC4; margin-top: 6px; }
.works__nav { display: flex; gap: 8px; }
.rail-btn {
  width: 46px; height: 46px; display: grid; place-items: center;
  font-size: 1.05rem; line-height: 1;
  border: 1px solid rgba(27,36,64,.55); border-radius: 999px;
  background: transparent; color: var(--ink); cursor: pointer;
  transition: background var(--dur-fast), transform var(--dur-fast);
}
.rail-btn:hover { background: rgba(27,36,64,.08); }
.rail-btn:active { transform: scale(.94); }
.rail-btn[disabled] { opacity: .3; cursor: default; }

/* 卡片向右出血到視窗邊緣，讀起來是「還有更多」而不是切齊的格線 */
/* 大小混排：lg 主打、md 中景、sm 點綴，靠 align-items 錯開高度製造律動 */
.works {
  margin-top: var(--s-4);
  display: grid; grid-auto-flow: column;
  grid-auto-columns: min-content;
  align-items: start;
  gap: clamp(16px, 2vw, 32px);
  overflow-x: auto; overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scroll-padding-left: var(--gutter);
  padding: 4px var(--gutter) var(--s-3);
  scrollbar-width: thin;
}
.works::-webkit-scrollbar { height: 6px; }
.works::-webkit-scrollbar-thumb { background: rgba(27,36,64,.24); border-radius: 3px; }
.works:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }

.work {
  scroll-snap-align: start; display: grid; gap: var(--s-2);
  align-content: start; text-decoration: none;
  width: clamp(260px, 30vw, 380px);
}
.work--lg { width: clamp(300px, 46vw, 620px); }
.work--md { width: clamp(268px, 32vw, 420px); }
.work--sm { width: clamp(232px, 24vw, 310px); }
/* 錯開落點，破掉整齊的橫排感 */
.work--md { margin-top: clamp(20px, 3vw, 56px); }
.work--sm:nth-of-type(odd)  { margin-top: clamp(40px, 6vw, 104px); }
.work--sm:nth-of-type(even) { margin-top: clamp(10px, 1.5vw, 28px); }
.work:focus-visible { outline: 2px solid var(--paper-hi); outline-offset: 6px; }
.work__media {
  overflow: hidden; border-radius: var(--radius);
  background: var(--paper-mid);
  box-shadow: 0 20px 46px -26px rgba(27,36,64,.5);
}
.work__media img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; transition: transform 620ms var(--ease-out); }
.work--lg .work__media img { aspect-ratio: 16/10; }
.work--sm .work__media img { aspect-ratio: 3/4; }
.work:hover .work__media img { transform: scale(1.05); }

.work__head { display: flex; align-items: baseline; gap: var(--s-2); flex-wrap: wrap; }
.work__brand { font-family: var(--font-display); font-size: clamp(1.2rem, 2vw, 1.7rem); font-weight: 700; letter-spacing: -0.03em; }
.work__name { font-size: var(--fs-small); color: var(--ink-soft); }
.work__meta { display: flex; gap: var(--s-2); flex-wrap: wrap; }

/* --- Clients：字體式 logo wall ----------------------------- */
/* 沒有客戶的向量 logo 檔，硬去 PDF 摳會糊。先用字體排，
   拿到正式 logo 後把 li 換成 <img> 即可，版型不用動。 */

.clients__head { font-size: clamp(1.9rem, 4.4vw, 3.75rem); max-width: 18ch; margin-top: var(--s-3); }

.wall {
  list-style: none; margin: clamp(32px, 5vw, 64px) 0 0; padding: 0;
  display: grid; gap: 1px;
  grid-template-columns: repeat(2, 1fr);
  background: rgba(27,36,64,.16);
  border: 1px solid rgba(27,36,64,.16);
  border-radius: var(--radius);
  overflow: hidden;
}
.wall__item {
  display: grid; place-items: center;
  min-height: clamp(88px, 12vw, 132px);
  padding: var(--s-3);
  background: rgba(255,255,255,.28);
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.9vw, 1.45rem);
  font-weight: 600; letter-spacing: -0.02em;
  color: var(--ink);
  text-align: center;
}

/* 9 個客戶：3 欄剛好 3×3，不會留空格。之後客戶數變了要一起調。 */
@media (min-width: 700px) { .wall { grid-template-columns: repeat(3, 1fr); } }

/* --- Schedule：檔期是光。開著就亮，訂走就熄。---------------- */

.sched__head { font-size: clamp(1.9rem, 4.4vw, 3.75rem); max-width: 20ch; margin-top: var(--s-3); }

.gauge { margin-top: clamp(36px, 5.5vw, 72px); }
.gauge__rail {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(18px, 3vw, 48px);
  align-items: end;
}
.gauge__mo { display: grid; gap: var(--s-2); }

.gauge__slots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.gauge__slot {
  height: clamp(76px, 11.5vw, 138px);
  border-radius: 5px;
  /* 開放＝亮著的一格光 */
  background: linear-gradient(180deg, rgba(253,229,163,.92) 0%, rgba(249,214,147,.72) 38%, rgba(215,111,104,.52) 100%);
  box-shadow: 0 8px 22px -12px rgba(215,111,104,.75), inset 0 1px 0 rgba(255,255,255,.55);
}
/* 已訂走＝熄掉的一格 */
.gauge__slot--taken {
  background: rgba(27,36,64,.09);
  box-shadow: none;
  border: 1px solid rgba(27,36,64,.22);
}
/* 整月滿了，最後一格用深紅收尾，讓「滿」在遠處也看得出來 */
.gauge__mo--full .gauge__slot { background: rgba(110,42,48,.16); border-color: rgba(110,42,48,.5); }

.gauge__foot { display: grid; gap: 2px; padding-top: var(--s-2); border-top: 1px solid rgba(27,36,64,.26); }
.gauge__name { font-family: var(--font-display); font-size: var(--fs-h3); font-weight: 600; letter-spacing: -0.02em; }
.gauge__state { font-size: var(--fs-small); font-weight: 500; }
.gauge__mo--open  .gauge__state { color: #1E4A2E; }
.gauge__mo--tight .gauge__state { color: #5C3B08; }
.gauge__mo--full  .gauge__state { color: #6E2A30; }

.sched__note { margin-top: var(--s-4); font-size: var(--fs-small); color: var(--ink-soft); max-width: 46ch; }

@media (max-width: 599px) {
  .gauge__rail { grid-template-columns: repeat(2, 1fr); gap: var(--s-4) var(--s-3); }
}

/* --- Contact：文字疊在底圖上，單一圖層 --------------------- */

.cta { position: relative; overflow: hidden; isolation: isolate; }
.cta__bg {
  position: absolute; inset: 0; z-index: -2;
  width: 100%; height: 100%;
  object-fit: cover; object-position: 82% center;
}
/* 由左而右的淡紗：左側夠實讓墨字站得住，右側收乾淨讓 Lubi 露出來 */
.cta__veil {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg,
      rgba(228,225,235,.97) 0%,
      rgba(228,225,235,.93) 34%,
      rgba(228,225,235,.62) 56%,
      rgba(228,225,235,.10) 78%,
      rgba(228,225,235,0) 100%),
    linear-gradient(180deg, rgba(228,225,235,.55) 0%, rgba(228,225,235,0) 22%);
}
.cta__inner { position: relative; }
.cta .label { color: var(--ink); }   /* 壓在圖上，次級墨只有 4.43:1，改用主墨 */
.cta__head {
  font-size: clamp(2.2rem, 5.1vw, 4.4rem);
  font-weight: 600; letter-spacing: -0.03em; line-height: 1.05;
  max-width: 15ch; margin-top: var(--s-2);
}   /* 壓在圖上，次級墨只有 4.43:1，改用主墨 */

.cta__submit { display: flex; align-items: center; gap: var(--s-3); flex-wrap: wrap; }
.buddy { display: grid; gap: 6px; min-width: 200px; }
.buddy__say { font-size: var(--fs-small); color: var(--ink-soft); }
.buddy__bar { width: 100%; max-width: 240px; height: 4px; border-radius: 2px; background: rgba(27,36,64,.2); overflow: hidden; }
.buddy__fill { display: block; height: 100%; width: 0; border-radius: 2px; background: var(--coral-deep); transition: width 520ms var(--ease-out); }

/* 窄螢幕沒有並排空間，底圖退到下緣當收尾，紗加厚保住可讀性 */
@media (max-width: 899px) {
  .cta { padding-bottom: clamp(180px, 46vw, 300px); }
  .cta__bg { object-position: 72% bottom; }
  .cta__veil {
    background: linear-gradient(180deg,
      rgba(228,225,235,.97) 0%,
      rgba(228,225,235,.95) 52%,
      rgba(228,225,235,.55) 72%,
      rgba(228,225,235,0) 100%);
  }
}
@media (min-width: 900px) {
  .cta { min-height: 640px; }
  .cta__inner .form { max-width: 560px; }
}

/* --- 表單 ------------------------------------------------- */

.form { display: grid; gap: var(--s-3); margin-top: var(--s-5); max-width: 620px; }
.field { display: grid; gap: 6px; }
.field > label { font-size: var(--fs-small); font-weight: 500; }
.field .req { color: var(--danger); }
.field input, .field select, .field textarea {
  font: inherit; font-size: var(--fs-body);
  min-height: 48px; padding: 12px 14px;
  color: var(--ink);
  background: rgba(255,255,255,.86);
  border: 1px solid var(--ink-soft);
  border-radius: 10px;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--ink); }
.field .hint { font-size: var(--fs-small); color: var(--ink-soft); }
.field .err { font-size: var(--fs-small); color: var(--danger); font-weight: 500; min-height: 0; }
.field[data-invalid="true"] input,
.field[data-invalid="true"] select { border-color: var(--danger); border-width: 2px; }

.field--full > .btn { justify-self: start; }
.form__status { font-size: var(--fs-small); margin-top: var(--s-2); max-width: 52ch; }

/* --- Footer ----------------------------------------------- */

/* 右下角的 chat 是 fixed 的，會蓋住社群連結 —— 底部留出淨空 */
.footer { padding-block: var(--s-6) clamp(104px, 13vw, 148px); border-top: 1px solid rgba(27,36,64,.16); }
.footer__inner { display: flex; flex-wrap: wrap; gap: var(--s-3) var(--s-5); align-items: baseline; }
.footer__links { display: flex; gap: var(--s-3); flex-wrap: wrap; margin-left: auto; }
.footer__stamp { width: 100%; font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: .12em; color: var(--ink-soft); }
.footer__nav { display: none; gap: var(--s-3); flex-wrap: wrap; width: 100%; }
.footer a {
  display: inline-flex; align-items: center; min-height: 44px;
  text-decoration: none; color: var(--ink-soft); font-size: var(--fs-small);
}
.footer a:hover { color: var(--ink); }

/* --- Chat：假對話，實為導流 ------------------------------- */

.chat { position: fixed; right: clamp(14px, 3vw, 28px); bottom: clamp(14px, 3vw, 28px); z-index: 200; display: grid; gap: 10px; justify-items: end; }

.chat__toggle {
  position: relative;
  display: flex; align-items: center; gap: 10px;
  min-height: 56px; padding: 6px 18px 6px 6px;
  border: 1px solid rgba(27,36,64,.18);
  border-radius: 999px;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 30px -14px rgba(27,36,64,.5);
  cursor: pointer; font: inherit;
}
.chat__toggle { animation: hover-pill 4.6s ease-in-out infinite; }
@keyframes hover-pill {
  0%, 100% { transform: translateY(0); box-shadow: 0 12px 30px -14px rgba(27,36,64,.5); }
  50%      { transform: translateY(-6px); box-shadow: 0 20px 38px -16px rgba(27,36,64,.42); }
}
.chat__avatar {
  width: 44px; height: 44px; object-fit: contain;
  animation: bob 2.8s ease-in-out infinite;
  transform-origin: 50% 85%;
}
@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(-4deg) scale(1); }
  30%      { transform: translateY(-4px) rotate(3deg) scale(1.04); }
  60%      { transform: translateY(-1px) rotate(-2deg) scale(1); }
}
/* 星芒脈動：光源在呼吸 */
.chat__toggle::before {
  content: ""; position: absolute; left: 16px; top: 50%;
  width: 26px; height: 26px; margin-top: -13px; border-radius: 50%;
  background: radial-gradient(circle, rgba(253,229,163,.85) 0%, rgba(253,229,163,0) 68%);
  animation: star-pulse 2.8s ease-in-out infinite;
  pointer-events: none;
}
@keyframes star-pulse {
  0%, 100% { opacity: .35; transform: scale(.85); }
  30%      { opacity: .9;  transform: scale(1.25); }
}
.chat__bubble { font-size: var(--fs-small); font-weight: 500; white-space: nowrap; }

.chat__panel {
  width: min(300px, calc(100vw - 32px));
  padding: var(--s-3);
  border: 1px solid rgba(27,36,64,.18);
  border-radius: var(--radius);
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 44px -18px rgba(27,36,64,.55);
  display: grid; gap: var(--s-3);
}
.chat__panel[hidden] { display: none; }
.chat__msg { font-size: var(--fs-small); }
.chat__go { width: 100%; }

/* --- 斷點 ------------------------------------------------- */

/* 手機：字標退成純圖標，但保留在無障礙樹中（不能用 display:none） */
@media (max-width: 767px) {
  .brand__name {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip-path: inset(50%); white-space: nowrap;
  }
  .header__inner { gap: var(--s-2); min-height: 60px; }
  .header .nav { display: none; }          /* 目標塞不進 375px，改掛 footer */
  .footer__nav { display: flex; }
  .header .btn { padding: 0 16px; min-height: 44px; font-size: 0.8125rem; }
}

@media (min-width: 768px) {
  .sched { grid-template-columns: repeat(4, 1fr); }
  .form { grid-template-columns: 1fr 1fr; }
  .field--full { grid-column: 1 / -1; }
}

/* --- 專案內頁 --------------------------------------------- */

.pj { padding-block: clamp(48px, 7vw, 96px) 0; }
.pj__head { display: grid; gap: var(--s-2); }
.pj__title {
  font-size: clamp(2.4rem, 6.4vw, 5.6rem);
  font-weight: 600; letter-spacing: -0.035em; line-height: 1.02;
  max-width: 16ch;
}
.pj__facts {
  display: grid; gap: 4px var(--s-4); margin: var(--s-4) 0 0;
  grid-template-columns: auto 1fr;
  max-width: 520px;
  border-top: 1px solid rgba(27,36,64,.2); padding-top: var(--s-3);
}
.pj__facts dt { }
.pj__facts dd { margin: 0; font-size: var(--fs-small); }

.pj__hero { margin-top: clamp(32px, 5vw, 64px); }
.pj__hero img { width: 100%; height: auto; display: block; }

.pj__sheets { display: grid; gap: clamp(16px, 2.5vw, 32px); margin-top: clamp(32px, 5vw, 64px); }
.pj__sheet { margin: 0; border-radius: var(--radius); overflow: hidden; background: var(--paper-mid); box-shadow: 0 20px 46px -28px rgba(27,36,64,.5); }
.pj__sheet img { width: 100%; height: auto; display: block; }

.pj__nav {
  display: grid; gap: var(--s-3); grid-template-columns: 1fr;
  margin-top: clamp(48px, 7vw, 96px);
  padding-top: var(--s-4); border-top: 1px solid rgba(27,36,64,.2);
}
.pj__step {
  display: grid; gap: 4px; text-decoration: none;
  padding: var(--s-3); border-radius: var(--radius);
  background: rgba(255,255,255,.3); border: 1px solid rgba(27,36,64,.16);
  min-height: 44px;
}
.pj__step:hover { background: rgba(255,255,255,.55); }
.pj__step-name { font-family: var(--font-display); font-weight: 600; font-size: var(--fs-h3); letter-spacing: -0.02em; }

.pj__back { margin-top: clamp(32px, 5vw, 56px); padding-bottom: clamp(32px, 5vw, 64px); }
.pj__miss { display: grid; gap: var(--s-4); justify-items: start; padding-block: clamp(64px, 12vw, 160px); }

@media (min-width: 700px) { .pj__nav { grid-template-columns: 1fr 1fr; } }

/* --- 捲動 motion ------------------------------------------ */

.progress {
  position: fixed; inset: 0 auto auto 0; z-index: 300;
  height: 2px; width: 0;
  background: linear-gradient(90deg, var(--coral-deep), var(--coral), var(--amber-mid));
  transition: width 90ms linear;
}

/* 媒體隨捲動微幅位移，製造深度。位移量由 JS 寫入 --shift */
.work__media img, .sol__media img, .story__viewer {
  will-change: transform;
}
.work__media img { transform: translate3d(0, var(--shift, 0px), 0) scale(1.06); }
.sol__media img  { transform: translate3d(0, var(--shift, 0px), 0) scale(1.05); }
.work:hover .work__media img { transform: translate3d(0, var(--shift, 0px), 0) scale(1.1); }

/* --- 中文排版修正 ----------------------------------------- */
/* Bricolage Grotesque 沒有中文字符，中文走 fallback；
   但 Latin face 的負字距與 font-stretch 仍會套用，造成換行與行高跑掉。 */

[lang="zh-Hant"] h1, [lang="zh-Hant"] h2, [lang="zh-Hant"] h3,
[lang="zh-Hant"] .creed__line, [lang="zh-Hant"] .sol__thesis,
[lang="zh-Hant"] .sols__intro, [lang="zh-Hant"] .sol__title {
  letter-spacing: .01em;
  font-stretch: normal;
  line-height: 1.3;
}

/* ch 是以 Latin「0」寬計算的，中文字寬約 2 倍 —— 全部換成 em */
/* 中文字寬約 Latin 兩倍，同字級會橫跨整個版面、行數變多。
   降一級字並限在 9 字寬，維持與英文版一致的左側區塊構圖。 */
[lang="zh-Hant"] .slogan {
  font-size: clamp(2.1rem, 5.6vw, 4.6rem);
  max-width: 9em;
  line-height: 1.22;
}

[lang="zh-Hant"] .creed__line:nth-child(3) { max-width: 24em; }
[lang="zh-Hant"] .lead                     { max-width: 26em; }
[lang="zh-Hant"] .story__step p            { max-width: 23em; }
[lang="zh-Hant"] .sol__thesis              { max-width: 19em; }
[lang="zh-Hant"] .sol__body                { max-width: 26em; }
[lang="zh-Hant"] .sched__head              { max-width: 15em; font-size: clamp(1.6rem, 3.4vw, 2.8rem); }
[lang="zh-Hant"] .sched__note              { max-width: 26em; }
[lang="zh-Hant"] .cta__head                { max-width: 15em; font-size: clamp(1.6rem, 3.4vw, 2.8rem); }

/* --- 尊重 reduced-motion --------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .slogan .w { opacity: 1; transform: none; }
  .chat__toggle, .chat__avatar, .chat__toggle::before { animation: none; }
  .work__media img, .sol__media img { transform: none !important; }
  .progress { transition: none; }
}