/* ==========================================================================
   MAXDECAL Multipurpose — Digital Printing Label Series (Dry Glue)
   Production stylesheet. Design tokens per the Claude Design handoff.
   Two backgrounds only: ink #0C0C0C and paper #F4F2EE, plus white.
   Border-radius: 0 everywhere. Diagonals (skew) are the only decorative motif.
   ========================================================================== */

:root {
  --red: #E32027;
  --black: #101010;
  --ink: #0C0C0C;
  --panel: #141210;
  --bd-dark: #262320;
  --mid: #4A4640;
  --g600: #6E6963;
  --g500: #8A8781;
  --g500b: #8E8A85;
  --g300: #B9B5AE;
  --g300b: #C9C6C1;
  --g200: #DAD7D3;
  --g200b: #D8D4CE;
  --paper: #F4F2EE;
  --paper-alt: #FAFAF8;
  --hairline: #E6E4E0;
  --row-hover: #FDECEC;
  --body-ink: #504D48;

  /* 字體比照 APV80+VPF100 頁(2026-07-27 使用者指示):
     display = Saira Condensed 800 italic / 內文 = Saira / 標籤 = Chakra Petch;中文一律 Noto Sans TC */
  --f-display: 'Saira Condensed', 'Arial Narrow', sans-serif;
  --f-body: 'Saira', system-ui, sans-serif;
  --f-mono: 'Chakra Petch', ui-monospace, monospace;

  --pad-x: 36px;
  --maxw: 1500px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

html[lang^="zh"] {
  --f-display: 'Saira Condensed', 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  --f-body: 'Saira', 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', system-ui, sans-serif;
  --f-mono: 'Chakra Petch', 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', monospace;
}

/* 中文標題:Saira Condensed 沒有中文字符 → 落到 Noto Sans TC,補到 900 Black;
   斜體交給瀏覽器合成(APV80 頁的中文斜體就是合成的,刻意不關 font-synthesis)。 */
html[lang^="zh"] h1,
html[lang^="zh"] h2,
html[lang^="zh"] h3,
html[lang^="zh"] .combo-title,
html[lang^="zh"] .group-name,
html[lang^="zh"] .group-chip,
html[lang^="zh"] .row .sku,
html[lang^="zh"] .spec-stats .v {
  font-weight: 900;
}

/* 中文標題不用「中空字」(-webkit-text-stroke)。
   拉丁 display 字只有少數幾筆,描邊後是一圈乾淨的輪廓,所以英文版維持原設計;
   但 CJK 一個字十幾筆、而且字型內的筆劃輪廓多半沒有做布林聯集 → 描邊會把每一筆的
   邊緣都畫出來,交叉處露出一堆內部線條,整體又空又骨感。
   中文改用「實心 + 濃淡」表達同一組主次關係:深色區塊退一階灰,淺色區塊上品牌紅。 */
html[lang^="zh"] .outline-w { color: var(--g300); -webkit-text-stroke: 0; }
html[lang^="zh"] .outline-k { color: var(--red); -webkit-text-stroke: 0; }

/* 900 字重的中文標題在 1.04–1.08 行高會擠在一起(備援字型的字面更大時更明顯),放寬一點 */
html[lang^="zh"] h1,
html[lang^="zh"] h2,
html[lang^="zh"] h3 { line-height: 1.18; }
html[lang^="zh"] .hero h1 { line-height: 1.12; }

* { min-width: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: #FFFFFF;
  color: var(--black);
  font-family: var(--f-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input { font: inherit; color: inherit; border-radius: 0; }
::selection { background: var(--red); color: #fff; }

/* ---------- shared primitives ---------- */

.wrap { max-width: var(--maxw); margin: 0 auto; width: 100%; }

.mono {
  font-family: var(--f-mono);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eyebrow {
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--red);
}

h1, h2, h3 {
  margin: 0;
  font-family: var(--f-display);
  /* APV80 頁的 .disp 規格:800 + italic + uppercase(中文斜體由瀏覽器合成) */
  font-weight: 800;
  font-style: italic;
  text-transform: uppercase;
  line-height: 1.02;
  letter-spacing: 0.01em;
}

/* display 風格的非標題元素一併套 800 italic */
.focus-badge, .combo-title, .row .sku, .spec-stats .v,
.group-name, .group-chip, .band-lane, .loader-pct {
  font-style: italic;
  font-weight: 800;
}

/* one phrase per heading gets the pseudo-italic skew (Anton has no italic) */
.skew { display: inline-block; transform: skewX(-8deg); }
.red { color: var(--red); }
.outline-w { color: transparent; -webkit-text-stroke: 2px #FFFFFF; }
.outline-k { color: transparent; -webkit-text-stroke: 2.5px var(--black); }

.slab {
  position: absolute;
  top: -10%;
  height: 130%;
  transform: skewX(-14deg);
  pointer-events: none;
}

/* 紅色標題字可能疊上紅色斜紋(.slab)——尤其手機版區塊變高、斜紋水平位移放大後
   必定壓到字(2026-07-28 使用者回報「同一種膠。」看不見)。
   修法=深色描邊(text-shadow 疊在字面「後方」,CJK 安全、不會有 text-stroke 的交叉線):
   疊上紅斜紋時靠描邊分離出字形;在純黑底上描邊幾乎隱形,不改變原設計。 */
.hero h1 .red, .system h2 .red, .system h2 .plus, .official h2 .red {
  text-shadow:
    0 0 2px rgba(10, 10, 10, 0.9),
    2px 2px 0 rgba(10, 10, 10, 0.6), -2px 2px 0 rgba(10, 10, 10, 0.6),
    2px -2px 0 rgba(10, 10, 10, 0.6), -2px -2px 0 rgba(10, 10, 10, 0.6);
}

/* 按鈕比照 APV80:Chakra Petch 600 */
.btn {
  display: inline-block;
  padding: 16px 32px;
  font-family: var(--f-mono);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transform: skewX(-12deg);
  transition: background 220ms, color 220ms, border-color 220ms;
  cursor: pointer;
  border: 0;
}
.btn > span { display: inline-block; transform: skewX(12deg); }
.btn-red { background: var(--red); color: #FFFFFF; }
.btn-red:hover { background: #FFFFFF; color: var(--black); }
.btn-ghost { background: transparent; color: #FFFFFF; border: 2px solid #FFFFFF; }
.btn-ghost:hover { background: #FFFFFF; color: var(--black); }

.chip {
  display: inline-block;
  padding: 8px 14px;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #FFFFFF;
}

[data-reveal] { opacity: 0; transform: translateY(26px); }
[data-reveal].in {
  opacity: 1;
  transform: none;
  transition: opacity 640ms var(--ease-out), transform 640ms var(--ease-out);
}

@keyframes mdMarquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes mdHeroLine { from { opacity: 0; transform: translateY(90%); } to { opacity: 1; transform: none; } }
@keyframes mdBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } }
@keyframes mdScrollHint { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(8px); } }

/* ---------- fixed chrome ---------- */

.prog { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 200; background: transparent; }
.prog > i { display: block; height: 100%; width: 0; background: var(--red); }

.hdr {
  position: fixed;
  top: 3px; left: 0; right: 0;
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px var(--pad-x);
}
/* the logo is fixed brand art — never recolored or replaced with type */
.hdr-logo { height: 44px; width: auto; filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.25)); }

/* difference blending is what lets one nav sit over both ink and paper sections */
.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 26px;
  mix-blend-mode: difference;
  color: #FFFFFF;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.nav a { color: #FFFFFF; transition: color 200ms; }
.nav a:hover { color: var(--red); }
.nav .nav-official { border-bottom: 2px solid var(--red); padding-bottom: 2px; }
.nav .nav-box { border: 1px solid rgba(255, 255, 255, 0.6); padding: 5px 10px; }

/* ---------- loader ---------- */

.loader {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  background: var(--ink);
  overflow: hidden;
  transition: transform 720ms cubic-bezier(0.76, 0, 0.24, 1), visibility 0s 740ms;
  will-change: transform;
}
.loader.done { transform: translateY(-100%); visibility: hidden; }
.loader img { height: 54px; width: auto; position: relative; }
.loader-pct {
  position: relative;
  font-family: var(--f-display);
  font-size: clamp(64px, 9vw, 140px);
  color: #FFFFFF;
  line-height: 1;
}
.loader-pct span { color: var(--red); font-size: 0.4em; }
.loader-track { position: relative; width: min(420px, 70vw); height: 4px; background: var(--bd-dark); }
.loader-track > i { display: block; height: 100%; width: 0; background: var(--red); transition: width 120ms linear; }
.loader-cap {
  position: relative;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--g500b);
}

/* ---------- 1. hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 96px var(--pad-x) 28px;
  background: var(--ink);
  overflow: hidden;
}
.hero-img {
  position: absolute;
  inset: -12% 0;
  height: 124%;
  background: center / cover no-repeat;
  opacity: 0.38;
  will-change: transform;
}
.hero-grad {
  position: absolute;
  inset: 0;
  background: linear-gradient(12deg, rgba(12, 12, 12, 0.96) 26%, rgba(12, 12, 12, 0.42) 60%, rgba(12, 12, 12, 0.15));
}
.hero-inner { position: relative; padding-bottom: 66px; }

.hero-eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-bottom: 12px;
}
/* 家族歸屬退為次要:透明底 + 白框細 chip(紅色留給下面的焦點列) */
.hero-eyebrow .family {
  border: 1px solid rgba(255, 255, 255, 0.45);
  padding: 7px 13px;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--g300);
  text-transform: uppercase;
}

/* 焦點列:「多用途 / Multipurpose」= 紅色斜角大標(品牌 skew 語彙)+ 系列名亮白 + 技術詞紅底線。
   一進頁就先讀到「這是多用途系列」,再往下才是 h1 的主張。 */
.hero-focus {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin-bottom: 24px;
  animation: mdHeroLine 700ms cubic-bezier(0.16, 1, 0.3, 1) 1100ms both;
}
.focus-badge {
  display: inline-block;
  background: var(--red);
  color: #FFFFFF;
  padding: 8px 24px 10px;
  transform: skewX(-12deg);
  font-family: var(--f-display);
  font-size: clamp(30px, 3.6vw, 54px);
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  box-shadow: 6px 6px 0 rgba(255, 255, 255, 0.18);
}
.focus-badge > span { display: inline-block; transform: skewX(12deg); }
html[lang^="zh"] .focus-badge {
  font-weight: 900;
  letter-spacing: 0.06em;
}
.focus-series {
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: clamp(13px, 1.4vw, 19px);
  letter-spacing: 0.2em;
  line-height: 2;
  text-transform: uppercase;
  color: #FFFFFF;
}
.focus-series .focus-tech {
  border-bottom: 3px solid var(--red);
  padding-bottom: 2px;
  white-space: nowrap;
}

.hero h1 { font-size: clamp(3.2rem, 9vw, 7.6rem); line-height: 1.02; color: #FFFFFF; }
.hero h1 .line { display: block; overflow: hidden; }
.hero h1 .line > span {
  display: inline-block;
  animation: mdHeroLine 700ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
.hero h1 .line:nth-child(1) > span { animation-delay: 1250ms; }
.hero h1 .line:nth-child(2) > span { animation-delay: 1400ms; }
.hero h1 .line:nth-child(3) > span { animation-delay: 1550ms; }

.hero-sub {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 26px;
  margin-top: 40px;
}
.hero-sub p { margin: 0; max-width: 460px; font-size: 16px; line-height: 1.75; color: var(--g300b); }
.hero-cta { display: flex; align-items: center; gap: 26px; }
.scroll-hint {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--g600);
  text-transform: uppercase;
  animation: mdScrollHint 2.2s ease-in-out infinite;
}

.ticker {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(12, 12, 12, 0.6);
  overflow: hidden;
  padding: 13px 0;
}
.ticker-lanes { display: flex; width: max-content; animation: mdMarquee 46s linear infinite; }
.ticker-lane {
  display: flex;
  gap: 26px;
  padding-right: 26px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--g500b);
  white-space: nowrap;
  text-transform: uppercase;
}
.ticker-lane .tk-lam { color: var(--red); }

/* ---------- 2. the cut edge (scroll story) ---------- */

.story { position: relative; height: 320vh; background: var(--paper); }
.story-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(320px, 1.15fr);
  gap: 40px;
  align-items: center;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 80px var(--pad-x) 40px;
}
.story-stages { position: relative; min-height: 300px; margin-top: 26px; }
.stage {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(18px);
  pointer-events: none;
  transition: opacity 480ms ease-out, transform 480ms var(--ease-out);
}
.stage.passed { transform: translateY(-18px); }
.stage.on { opacity: 1; transform: none; }
.stage h2 { font-size: clamp(1.8rem, 3.2vw, 2.8rem); margin-bottom: 20px; }
.stage p { margin: 0 0 20px; max-width: 440px; font-size: 16px; line-height: 1.8; color: var(--body-ink); }
.story-dots { display: flex; gap: 8px; margin-top: 18px; }
.story-dots i { width: 34px; height: 4px; background: var(--g200b); transition: background 300ms; }
.story-dots i.on { background: var(--red); }

.wipe {
  position: relative;
  height: min(58vh, 520px);
  background: #FFFFFF;
  border: 2px solid var(--black);
  cursor: ew-resize;
  touch-action: none;
  user-select: none;
  overflow: hidden;
}
.wipe:focus-visible { outline: 3px solid var(--red); outline-offset: 3px; }
.xsec { position: absolute; inset: 0; background-repeat: no-repeat; background-position: center; background-size: cover; }
.xsec > i { position: absolute; left: 0; right: 0; display: block; }
/* 保留給實拍版剖面圖(目前用 CSS 示意圖,見 app.js crossSection())*/
.xsec-wet { background-color: #2A2724; background-image: url(assets/xsec-wet.jpg); }
.xsec-dry { background-color: #101010; background-image: url(assets/xsec-dry.jpg); }
.wipe-clip { will-change: clip-path; }
.wipe-line {
  position: absolute;
  top: 0; bottom: 0;
  width: 3px;
  margin-left: -1.5px;
  background: var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.wipe-knob {
  width: 46px; height: 46px;
  background: #FFFFFF;
  border: 3px solid var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--red);
}
/* 圖說壓在淺色示意圖的基材紋理上(不是深色實拍照)→ 深灰無陰影;
   實測對比 5.69:1(#55524C 對最淺的 #DFDCD7 條紋)。 */
.wipe-cap {
  position: absolute;
  top: 12px; right: 12px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: #55524C;
  text-transform: uppercase;
  text-align: right;
  pointer-events: none;
}
.wipe-tagL, .wipe-tagR { position: absolute; bottom: 16px; pointer-events: none; font-size: 12px; padding: 7px 12px; letter-spacing: 0.14em; }
.wipe-tagL { left: 16px; background: var(--g600); }
.wipe-tagR { right: 16px; background: var(--red); }

.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--black);
  border: 2px solid var(--black);
  border-top: 0;
}
.stat-strip > div { background: #FFFFFF; padding: 13px 16px; }
.stat-strip .k {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--g500);
  text-transform: uppercase;
}
.stat-strip .v { font-size: 14px; font-weight: 700; margin-top: 4px; }

/* ---------- 3. the system ---------- */

.system { position: relative; background: var(--ink); color: #FFFFFF; padding: 110px var(--pad-x) 120px; overflow: hidden; }
.system-head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 26px;
  margin: 18px 0 46px;
}
.system h2 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); color: #FFFFFF; }
/* + 號同樣可能疊上紅斜紋:白色內光暈之外再加深色描邊(這條在檔案後段,會蓋過上面的通則) */
.system h2 .plus {
  color: var(--red);
  text-shadow:
    0 0 1px #FFFFFF,
    2px 2px 0 rgba(10, 10, 10, 0.6), -2px 2px 0 rgba(10, 10, 10, 0.6),
    2px -2px 0 rgba(10, 10, 10, 0.6), -2px -2px 0 rgba(10, 10, 10, 0.6);
}
.system-head p { margin: 0; max-width: 420px; font-size: 15px; line-height: 1.8; color: var(--g300); }
.system-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 22px;
  align-items: start;
}
.step-label {
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--g500b);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.picks { display: grid; gap: 1px; background: var(--bd-dark); margin-bottom: 26px; }
.pick {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 13px 15px;
  background: var(--ink);
  color: var(--g200);
  border-left: 4px solid transparent;
  cursor: pointer;
  text-align: left;
  border-top: 0; border-right: 0; border-bottom: 0;
  transition: background 200ms, color 200ms;
  width: 100%;
}
.pick .sku { font-family: var(--f-mono); font-weight: 700; font-size: 14px; }
.pick .short { font-size: 14px; }
.pick .th { font-family: var(--f-mono); font-size: 12px; opacity: 0.65; }
.pick.on { background: #FFFFFF; color: var(--black); border-left-color: var(--red); }

.lams { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--bd-dark); }
.lam {
  background: var(--ink);
  color: #FFFFFF;
  padding: 13px 12px;
  cursor: pointer;
  text-align: left;
  border: 0;
  transition: background 200ms;
}
.lam.on { background: var(--red); }
.lam .sku { font-family: var(--f-mono); font-weight: 700; font-size: 13px; }
.lam .desc { font-size: 12px; opacity: 0.75; margin-top: 4px; }

.stackbox { background: var(--panel); border: 1px solid var(--bd-dark); padding: 26px; display: flex; flex-direction: column; gap: 6px; }
.layer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 10px;
  overflow: hidden;
  transition: height 340ms var(--ease-out), background 340ms;
}
.layer .l { font-family: var(--f-mono); font-weight: 700; font-size: 12px; white-space: nowrap; }
.layer .r { font-family: var(--f-mono); font-size: 11px; opacity: 0.7; white-space: nowrap; }
.stack-note { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.14em; color: var(--g600); margin-top: 12px; text-transform: uppercase; }

.combo-title { font-family: var(--f-display); font-size: clamp(30px, 2.6vw, 44px); color: #FFFFFF; text-transform: uppercase; line-height: 1.08; }
.combo-role { font-size: 14px; line-height: 1.75; color: var(--g300); margin: 14px 0 22px; }
.combo-specs { display: grid; gap: 1px; background: var(--bd-dark); }
.combo-specs > div {
  background: var(--ink);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
}
.combo-specs .k { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em; color: var(--g500b); text-transform: uppercase; }
.combo-specs .v { font-size: 13px; font-weight: 700; color: #FFFFFF; text-align: right; }
.tds-btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.tds-btn {
  padding: 12px 18px;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transform: skewX(-12deg);
  transition: background 200ms, color 200ms;
}
.tds-btn > span { display: inline-block; transform: skewX(12deg); }
.tds-red { background: var(--red); color: #FFFFFF; }
.tds-red:hover { background: #FFFFFF; color: var(--black); }
.tds-out { border: 1px solid var(--mid); color: var(--g200); }
.tds-out:hover { background: #FFFFFF; color: var(--black); border-color: #FFFFFF; }

/* ---------- 4. the range ---------- */

.range { background: #FFFFFF; padding: 110px 0 90px; }
.range-head { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad-x); }
.range h2 { font-size: clamp(2.9rem, 6.4vw, 5rem); margin: 16px 0 0; }
.range-hint {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--g500);
  text-transform: uppercase;
  text-align: right;
  margin-top: 14px;
}
.group { margin-top: 54px; border-top: 2px solid var(--black); }
.group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 16px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px var(--pad-x) 18px;
}
.group-chip { padding: 6px 12px; font-family: var(--f-display); font-size: 16px; color: #FFFFFF; }
.group-name { font-family: var(--f-display); font-size: 22px; text-transform: uppercase; }
.group-count { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em; color: var(--g500); text-transform: uppercase; }

.row {
  display: grid;
  grid-template-columns: 64px minmax(140px, 0.55fr) minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 8px 26px;
  padding: 22px var(--pad-x);
  border-bottom: 2px solid var(--black);
  background: #FFFFFF;
  color: var(--black);
  transition: background 240ms, color 240ms;
}
.row .idx { font-family: var(--f-mono); font-size: 12px; opacity: 0.55; }
.row .sku { font-family: var(--f-display); font-size: clamp(28px, 3.4vw, 54px); line-height: 1.06; }
.row .desc { font-size: 15px; line-height: 1.5; opacity: 0.82; }
.row .badge {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  border: 1px solid currentColor;
  padding: 6px 10px;
  white-space: nowrap;
  text-transform: uppercase;
}
.row .go { font-family: var(--f-mono); font-weight: 700; font-size: 12px; letter-spacing: 0.14em; white-space: nowrap; text-transform: uppercase; }
.row.hot-a { background: var(--red); color: #FFFFFF; }
.row.hot-b { background: var(--black); color: #FFFFFF; }

/* 觸控裝置:游標跟隨看不到 → 每列放色卡小圖,點了開燈箱放大 */
.row { position: relative; }
.row-thumb { display: none; }
@media (hover: none) {
  .row { padding-right: calc(var(--pad-x) + 84px); }
  .row-thumb {
    display: block;
    position: absolute;
    right: var(--pad-x);
    top: 50%;
    transform: translateY(-50%);
    width: 68px;
    height: 68px;
    border: 2px solid var(--black);
    background: #FFFFFF;
    overflow: hidden;
  }
  .row-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
  .row.hot-a .row-thumb, .row.hot-b .row-thumb { border-color: #FFFFFF; }
}

.swatch-lb {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(12, 12, 12, 0.9);
}
.swatch-lb.on { display: flex; }
.swatch-lb figure { margin: 0; max-width: min(560px, 92vw); }
.swatch-lb img { width: 100%; border: 3px solid #FFFFFF; background: #FFFFFF; display: block; }
.swatch-lb figcaption {
  margin-top: 14px;
  text-align: center;
  font-family: var(--f-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #FFFFFF;
}
.lb-x {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 46px;
  height: 46px;
  border: 2px solid #FFFFFF;
  background: transparent;
  color: #FFFFFF;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.swatch-float {
  position: fixed;
  top: 0; left: 0;
  z-index: 90;
  width: 250px; height: 250px;
  border: 3px solid var(--black);
  background: #FFFFFF;
  box-shadow: 0 30px 60px rgba(16, 16, 16, 0.3);
  pointer-events: none;
  opacity: 0;
  transition: opacity 200ms;
}
.swatch-float img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 5. specifications ---------- */

.specs { background: var(--paper); border-top: 2px solid var(--black); padding: 100px var(--pad-x); }
.specs-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin: 16px 0 34px;
}
.specs h2 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); }
.specs-controls { display: flex; flex-wrap: wrap; gap: 10px; }
.filter {
  padding: 11px 16px;
  border: 2px solid var(--black);
  background: #FFFFFF;
  color: var(--black);
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 200ms, color 200ms;
}
.filter.on { background: var(--black); color: #FFFFFF; }
.search {
  width: 240px;
  padding: 11px 14px;
  border: 2px solid var(--black);
  background: #FFFFFF;
  font-family: var(--f-mono);
  font-size: 12px;
  outline: none;
}

.table-wrap { border: 2px solid var(--black); background: #FFFFFF; overflow-x: auto; }
.table { min-width: 1000px; }
.trow {
  display: grid;
  grid-template-columns: 100px minmax(220px, 1.4fr) 90px 100px 140px 170px 90px;
  gap: 14px;
  padding: 14px 18px;
  align-items: center;
}
.thead {
  background: var(--black);
  color: #FFFFFF;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.tbody .trow { font-size: 13px; color: var(--body-ink); border-top: 1px solid var(--hairline); transition: background 160ms; }
.tbody .trow:nth-child(even) { background: var(--paper-alt); }
.tbody .trow:hover { background: var(--row-hover); }
.tbody .c-sku { font-family: var(--f-mono); font-weight: 700; color: var(--red); }
.tbody .c-name { color: var(--black); font-weight: 700; }
.tbody .c-tds a {
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 12px;
  border-bottom: 2px solid var(--red);
  padding-bottom: 1px;
}
.tempty { padding: 26px 18px; font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.14em; color: var(--g500); text-transform: uppercase; }

.spec-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1px;
  background: var(--black);
  border: 2px solid var(--black);
  border-top: 0;
}
.spec-stats > div { background: var(--paper); padding: 22px 20px; }
.spec-stats .v { font-family: var(--f-display); font-size: 26px; text-transform: uppercase; }
.spec-stats .k { font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.14em; color: var(--g500); margin-top: 6px; text-transform: uppercase; }

/* ---------- marquee band ---------- */

.band { background: #FFFFFF; border-top: 2px solid var(--black); border-bottom: 2px solid var(--black); overflow: hidden; }
.band-inner { background: var(--red); overflow: hidden; }
.band-lanes { display: flex; width: max-content; animation: mdMarquee 30s linear infinite; }
.band-lane {
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 13px 20px 13px 0;
  font-family: var(--f-display);
  font-size: 25px;
  color: #FFFFFF;
  text-transform: uppercase;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.band-lane .x { color: rgba(255, 255, 255, 0.55); }

/* ---------- 7. in the field ---------- */

.field { background: #FFFFFF; padding: 110px var(--pad-x) 100px; }
.field h2 { font-size: clamp(2.9rem, 6.4vw, 5rem); margin: 16px 0 46px; max-width: 1100px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.card {
  border: 2px solid var(--black);
  background: #FFFFFF;
  overflow: hidden;
  transition: border-color 240ms, box-shadow 240ms, transform 240ms;
}
.card:hover { border-color: var(--red); box-shadow: 10px 10px 0 var(--red); transform: translate(-4px, -4px); }
.card-media { position: relative; aspect-ratio: 4 / 3; background: #EFEDE9; overflow: hidden; }
.card-img {
  position: absolute;
  inset: 0;
  background: center / cover no-repeat;
  filter: grayscale(0.4);
  transform: scale(1);
  transition: transform 640ms var(--ease-out), filter 420ms ease-out;
}
.card:hover .card-img { filter: grayscale(0); transform: scale(1.07); }
.card-tag {
  position: absolute;
  top: 0; left: 0;
  background: var(--black);
  color: #FFFFFF;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.16em;
  padding: 8px 16px 8px 12px;
  text-transform: uppercase;
}
.card-body { border-top: 2px solid var(--black); padding: 20px; display: flex; flex-direction: column; gap: 8px; }
.card-body h3 { font-size: 24px; }
/* 2026-07-28 使用者:卡片說明字太小 → 13.5/10.5 加大(手機閱讀距離下原尺寸吃力) */
.card-body .claim { font-size: 15.5px; line-height: 1.7; color: var(--body-ink); }
.card-body .uses { font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.1em; color: var(--g500); text-transform: uppercase; }

/* ---------- 8. official ---------- */

.official { position: relative; background: var(--ink); color: #FFFFFF; padding: 120px var(--pad-x) 44px; overflow: hidden; }
.official h2 { font-size: clamp(2.6rem, 6vw, 4.6rem); color: #FFFFFF; margin: 16px 0 26px; }
.official h2 .soft { color: var(--g300); }
.official p { max-width: 520px; font-size: 16px; line-height: 1.8; color: var(--g300); margin: 0 0 40px; }
.official-btns { display: flex; flex-wrap: wrap; gap: 16px; }
.official-foot {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  max-width: var(--maxw);
  margin: 70px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--bd-dark);
  font-family: var(--f-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--g600);
  text-transform: uppercase;
}
.official-foot img { height: 38px; width: auto; }
.official-foot .blink { display: inline-flex; align-items: center; gap: 8px; }
.official-foot .blink i { width: 7px; height: 7px; background: var(--red); animation: mdBlink 2.4s infinite; }

/* ---------- responsive ---------- */

@media (max-width: 1100px) {
  .story-sticky { grid-template-columns: 1fr; align-content: center; gap: 24px; }
  .story-stages { min-height: 250px; margin-top: 14px; }
  .stage h2 { font-size: clamp(30px, 6vw, 44px); }
  .stage p { font-size: 15px; }
  .wipe { height: min(38vh, 320px); }
  /* stacked: index + SKU on one line, then description, badge, link */
  .row { grid-template-columns: 44px minmax(0, 1fr); row-gap: 8px; align-items: baseline; }
  .row .desc, .row .badge, .row .go { grid-column: 2 / -1; }
  .row .badge { justify-self: start; }
}

@media (max-width: 760px) {
  :root { --pad-x: 20px; }
  .hdr { padding: 10px 20px; }
  .hdr-logo { height: 34px; }
  .nav { gap: 6px 14px; font-size: 10px; letter-spacing: 0.12em; }
  .nav .nav-sec { display: none; }
  .hero { padding: 96px var(--pad-x) 26px; }
  .hero-inner { padding-bottom: 64px; }
  .hero-sub { gap: 18px; }
  .hero-cta { width: 100%; justify-content: space-between; }
  .story { height: 300vh; }
  .story-sticky { padding: 74px var(--pad-x) 26px; }
  .system { padding: 84px var(--pad-x) 90px; }
  .range { padding: 84px 0 70px; }
  .specs { padding: 80px var(--pad-x); }
  .field { padding: 84px var(--pad-x) 80px; }
  .official { padding: 90px var(--pad-x) 36px; }
  .band-lane { font-size: 18px; gap: 20px; }
  .search { width: 100%; }
  .lams { grid-template-columns: 1fr; }
  .row .sku { font-size: 30px; }
  .official-foot { margin-top: 48px; }
}

@media (hover: none) {
  .swatch-float { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ticker-lanes, .band-lanes, .scroll-hint, .official-foot .blink i { animation: none !important; }
  .hero h1 .line > span { animation: none !important; opacity: 1; transform: none; }
  .hero-focus { animation: none !important; opacity: 1; transform: none; }
  .loader { transition: none; }
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  .card, .card-img, .layer, .stage { transition: none !important; }
}