/** Shopify CDN: Minification failed

Line 175:13 Expected identifier but found whitespace
Line 175:14 Unexpected "var("

**/

/* ============================================
   TOKENS
   ============================================ */
:root {
  --ink: #050505;
  --ink-soft: #0a0a0a;
  --bone: #F5F4EF;
  --bone-2: rgba(245, 244, 239, .7);
  --bone-3: rgba(245, 244, 239, .7);
  --bone-4: rgba(245, 244, 239, .55);
  --bone-5: rgba(245, 244, 239, .2);
  --bone-10: rgba(245, 244, 239, .1);
  --brass: #C7A46A;
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', 'Monaco', 'Cascadia Code', monospace;
}

* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-sans);
  overflow-x: hidden;
  width: 100%;
  scrollbar-color: #C7A46A #050505;
  scrollbar-width: thin;
}
html::-webkit-scrollbar { width: 10px; height: 10px; }
html::-webkit-scrollbar-track { background: #050505; }
html::-webkit-scrollbar-thumb { background: #C7A46A; border-radius: 0; }
html::-webkit-scrollbar-thumb:hover { background: #d4b47a; }

body { cursor: default; }
a, button, [role="button"], .cta__btn, .cta__contact-item { cursor: pointer; }

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
}

p { margin: 0; }

::selection { background: var(--brass); color: var(--ink); }

.cinematic { filter: brightness(0.85) contrast(1.15) saturate(0.7); }
.tabular-nums { font-variant-numeric: tabular-nums; }

/* ============================================
   REVEAL ANIMATION
   Every section starts hidden, fades in on viewport entry.
   This GUARANTEES no overlap, even if JS fails.
   ============================================ */
.reveal-block {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(.16,1,.3,1), transform 1s cubic-bezier(.16,1,.3,1);
}
.reveal-block.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero is always visible */
.hero,
.hero .reveal-block {
  opacity: 1;
  transform: none;
}

/* ============================================
   COMMON SECTION LAYOUT
   Each scene is a self-contained 100vh block.
   ============================================ */
.scene {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background: var(--ink);
}

.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 100%;
  background: var(--brass);
  transform-origin: 0% 50%;
  transform: scaleX(0);
  z-index: 9999;
  pointer-events: none;
  transition: transform 0.1s linear;
}

/* ============================================
   TOP NAV BAR (fixed, semi-transparent)
   ============================================ */
.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.5rem;
  background: rgba(5, 5, 5, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(245, 244, 239, 0.06);
  pointer-events: auto;
}
@media (min-width: 768px) { .topnav { padding: 1.25rem 2.5rem; } }
.topnav__brand {
  display: flex; align-items: center;
  text-decoration: none;
  color: var(--bone);
  flex-shrink: 0;
}
.topnav__brand-name {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--bone);
}
.topnav__menu {
  display: flex; align-items: center; gap: 0.25rem;
  list-style: none;
  margin: 0; padding: 0;
}
.topnav__menu a {
  display: inline-flex; align-items: center;
  padding: 0.5rem 0.875rem;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-2);
  text-decoration: none;
  border-radius: 9999px;
  transition: color 0.2s, background 0.2s;
}
.topnav__menu a:hover { color: var(--bone); background: rgba(245, 244, 239, 0.04); }
.topnav__contact {
  margin-left: 0.5rem;
  border: 1px solid var(--brass);
  color: var(--brass) !important;
}
.topnav__contact:hover {
  background: var(--brass) !important;
  color: var(--ink) !important;
}
.topnav {
  transition: transform 0.3s cubic-bezier(.16,1,.3,1);
}
.topnav--hidden {
  transform: translateY(-100%);
}
@media (max-width: 640px) {
  .topnav__menu li:not(:last-child) { display: none; }
  .topnav__brand-name { display: none; }
}
  background: var(--brass);
  transform-origin: 0% 50%;
  transform: scaleX(0);
  z-index: 9999;
  pointer-events: none;
  transition: transform 0.1s linear;
}

.scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center; gap: 0.75rem;
  color: var(--bone-2);
  z-index: 3;
}
.scroll-cue--right {
  left: auto; right: 2.5rem; transform: none;
}
@media (max-width: 767px) { .scroll-cue--right { display: none; } }
.scroll-cue__label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
}
.scroll-cue__line {
  width: 1px; height: 3.5rem;
  background: linear-gradient(180deg, rgba(245,244,239,0.7), transparent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.tag {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--brass);
}

/* ============================================
   SCENE 01 — HERO
   ============================================ */
.hero {
  display: flex; flex-direction: column;
  justify-content: flex-end;
  padding: 0 1.5rem 6rem;
  position: relative;
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  animation: kenBurns 20s ease-in-out infinite alternate;
}
.hero__bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(5,5,5,0.4) 0%, rgba(5,5,5,0.2) 40%, rgba(5,5,5,0.85) 100%);
}
.hero__bg::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(5,5,5,0.5) 0%, transparent 60%);
  z-index: 1;
}
@keyframes kenBurns {
  0% { transform: scale(1) translateY(0); }
  100% { transform: scale(1.06) translateY(-1.2%); }
}
.hero__content {
  position: relative; z-index: 2;
  max-width: 1100px;
}
.hero__title {
  font-size: clamp(2.75rem, 8vw, 7.5rem);
  letter-spacing: -0.04em;
  line-height: 0.92;
  font-weight: 700;
  color: var(--bone);
  margin-bottom: 1.5rem;
}
.hero__sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--bone-2);
  max-width: 36rem;
  line-height: 1.7;
}
.hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  right: 2.5rem;
  display: flex; flex-direction: column;
  align-items: center; gap: 0.75rem;
  color: var(--bone-2);
  z-index: 3;
}
@media (max-width: 767px) { .hero__scroll { display: none; } }

/* ============================================
   SCENE 02 — GROWTH STORY (sticky split)
   ============================================ */
.growth {
  min-height: 200vh;
  display: flex; flex-direction: column;
}
.growth__sticky {
  position: sticky; top: 0;
  height: 100vh;
  display: grid; grid-template-columns: 1fr 1fr;
}
.growth__bg-bamboo, .growth__bg-forest {
  position: absolute; inset: 0;
}
.growth__bg-bamboo img {
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(0.85) contrast(1.15) saturate(0.7);
}
.growth__bg-bamboo::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(5,5,5,0.4);
}
.growth__bg-forest {
  background: linear-gradient(135deg, #1a2420 0%, #0d1410 50%, #050a08 100%);
  opacity: 0;
  transition: opacity 0.5s ease;
}
.growth__bg-forest::before {
  content: ''; position: absolute; inset: 0;
  background: repeating-linear-gradient(85deg, rgba(0,0,0,0.45) 0 6px, transparent 6px 14px);
  opacity: 0.7;
}
.growth__bg-forest::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(5,5,5,0.5);
}
.growth__bg-forest.is-visible { opacity: 1; }

.growth__side {
  position: relative; z-index: 2;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 2rem;
  text-align: center;
}
.growth__num {
  font-size: clamp(5rem, 14vw, 11rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--bone);
}
.growth__unit {
  margin-top: 1rem;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--bone);
}
.growth__label {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-3);
}
.growth__vs {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
  width: 5rem; height: 5rem;
  border: 1px solid rgba(245,244,239,0.4);
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(5,5,5,0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--bone-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
}
.growth__tagline {
  position: absolute; bottom: 6rem; left: 0; right: 0;
  z-index: 3;
  text-align: center;
  color: var(--bone-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  padding: 0 1.5rem;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.growth__tagline.is-visible { opacity: 1; }
.growth__scroll {
  position: absolute; bottom: 2.5rem; left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex; flex-direction: column;
  align-items: center; gap: 0.75rem;
  color: var(--bone-3);
  opacity: 1;
  transition: opacity 0.3s ease;
}
.growth__scroll.is-hidden { opacity: 0; pointer-events: none; }

@media (max-width: 767px) {
  .growth__sticky { grid-template-columns: 1fr; }
  .growth__vs { width: 3.5rem; height: 3.5rem; font-size: 0.6rem; }
}

/* ============================================
   SCENE 03 — BAMBOO STRAND MACRO
   ============================================ */
.strand__bg {
  position: absolute; inset: 0;
  z-index: 0;
  overflow: hidden;
}
.strand__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform-origin: center center;
  will-change: transform;
}
.strand__bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(5,5,5,0.9) 0%, rgba(5,5,5,0.5) 40%, transparent 100%);
}
.strand__content {
  position: relative; z-index: 2;
  height: 100%;
  display: flex; flex-direction: column;
  justify-content: center;
  padding: 0 1.5rem;
  max-width: 56rem;
}
.strand__title {
  font-size: clamp(3rem, 7vw, 6.5rem);
  color: var(--bone);
  margin-bottom: 2rem;
}
.strand__caption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-2);
  max-width: 28rem;
  line-height: 1.7;
}

/* ============================================
   SCENE 04 — CONTINUOUS PRESS
   ============================================ */
.press__bg {
  position: absolute; inset: 0;
  z-index: 0;
  overflow: hidden;
}
.press__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.85) contrast(1.15) saturate(0.7);
}
.press__bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(5,5,5,0.95) 0%, rgba(5,5,5,0.7) 30%, rgba(5,5,5,0.3) 70%, transparent 100%),
    linear-gradient(180deg, rgba(5,5,5,0.4) 0%, transparent 30%, rgba(5,5,5,0.5) 100%);
}
.press__content {
  position: relative; z-index: 2;
  height: 100%;
  display: flex; flex-direction: column;
  justify-content: center;
  padding: 0 1.5rem;
  max-width: 56rem;
}
.press__title {
  font-size: clamp(3rem, 7vw, 6.5rem);
  color: var(--bone);
  margin-bottom: 2rem;
}
.press__caption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-2);
  max-width: 28rem;
  line-height: 1.7;
}

/* ============================================
   SCENE 05 — PERFORMANCE
   ============================================ */
.perf {
  padding: 6rem 0 4rem;
  display: flex; flex-direction: column;
}
.perf__inner { max-width: 80rem; margin: 0 auto; width: 100%; }
.perf__head { text-align: center; padding: 0 1.5rem 4rem; }
.perf__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: var(--bone);
  margin-top: 1.5rem;
}
.perf__sub {
  margin: 1.5rem auto 0;
  max-width: 36rem;
  color: var(--bone-3);
  font-size: 0.875rem;
  line-height: 1.6;
}
.perf__row {
  text-align: center;
  padding: 4rem 1.5rem;
  border-top: 1px solid var(--bone-10);
}
.perf__num {
  font-size: clamp(4.5rem, 13vw, 10rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--bone);
  font-variant-numeric: tabular-nums;
}
.perf__divider {
  width: 3rem; height: 1px;
  background: var(--brass);
  margin: 2rem auto;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1.4s cubic-bezier(.16,1,.3,1);
}
.perf__row.is-visible .perf__divider { transform: scaleX(1); }
.perf__label {
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--bone);
}
.perf__ctx {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-3);
}

/* ============================================
   SCENE 06 — RESIN DISTRIBUTION
   ============================================ */
.resin__bg {
  position: absolute; inset: 0;
  z-index: 0;
}
.resin__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.85) contrast(1.15) saturate(0.7);
}
.resin__bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(5,5,5,0.9) 0%, rgba(5,5,5,0.4) 50%, rgba(5,5,5,0.7) 100%);
}
.resin__content {
  position: relative; z-index: 2;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}
@media (max-width: 767px) {
  .resin__content { grid-template-columns: 1fr; }
}
.resin__left {
  padding: 0 1.5rem;
  max-width: 36rem;
}
@media (min-width: 768px) { .resin__left { padding: 0 3rem; } }
@media (min-width: 1024px) { .resin__left { padding: 0 5rem; } }
.resin__title {
  font-size: clamp(3rem, 7vw, 6rem);
  color: var(--bone);
  margin: 1rem 0 2rem;
}
.resin__body {
  color: var(--bone-2);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 3rem;
}
.resin__pillars {
  display: flex; flex-direction: column;
  gap: 1.5rem;
}
.resin__pillar {
  display: flex; align-items: flex-start; gap: 1rem;
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.resin__pillar.is-visible { opacity: 1; transform: translateY(0); }
.resin__pillar-dot {
  flex-shrink: 0;
  width: 2.5rem; height: 2.5rem;
  border: 1px solid var(--bone-5);
  border-radius: 50%;
  display: grid; place-items: center;
}
.resin__pillar-dot::after {
  content: ''; width: 0.5rem; height: 0.5rem;
  background: var(--brass); border-radius: 50%;
}
.resin__pillar-title { font-weight: 600; color: var(--bone); }
.resin__pillar-sub { font-size: 0.875rem; color: var(--bone-3); margin-top: 0.25rem; }

/* ============================================
   SCENE 07 — FORMING LINE
   ============================================ */
.forming__grid {
  position: absolute; inset: 0;
  display: grid; grid-template-columns: 1fr 1fr;
}
.forming__left {
  position: relative; z-index: 2;
  display: flex; flex-direction: column;
  justify-content: center;
  padding: 0 1.5rem;
  max-width: 40rem;
  background: linear-gradient(90deg, var(--ink) 0%, rgba(5,5,5,0.95) 50%, rgba(5,5,5,0.3) 100%);
}
@media (min-width: 768px) { .forming__left { padding: 0 3rem; } }
@media (min-width: 1024px) { .forming__left { padding: 0 5rem; } }
.forming__title {
  font-size: clamp(2.75rem, 6vw, 5rem);
  color: var(--bone);
  margin: 1rem 0 2rem;
}
.forming__body {
  color: var(--bone-2);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 3rem;
}
.forming__layers {
  display: flex; flex-direction: column;
  gap: 1.25rem;
  max-width: 28rem;
}
.forming__layer {
  display: flex; align-items: flex-start; gap: 1rem;
  opacity: 0; transform: translateX(-20px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.forming__layer.is-visible { opacity: 1; transform: translateX(0); }
.forming__layer-icon {
  flex-shrink: 0;
  width: 2.25rem; height: 2.25rem;
  border: 1px solid var(--bone-5);
  border-radius: 0.25rem;
  display: grid; place-items: center;
}
.forming__layer-title { font-weight: 600; color: var(--bone); font-size: 0.875rem; }
.forming__layer-sub { font-size: 0.75rem; color: var(--bone-3); margin-top: 0.125rem; }
.forming__right {
  position: relative; overflow: hidden;
}
.forming__right img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  filter: brightness(0.85) contrast(1.15) saturate(0.7);
}
.forming__right::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(270deg, transparent 50%, rgba(5,5,5,0.4) 100%);
}
@media (max-width: 767px) {
  .forming__grid { grid-template-columns: 1fr; }
  .forming__right { display: none; }
}

/* ============================================
   SCENE 08 — PRODUCT REVEAL
   ============================================ */
.reveal__halo {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 65% 50%, rgba(199,164,106,0.18) 0%, transparent 60%);
  opacity: 0.5;
  z-index: 1;
}
.reveal__floor {
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 50%;
  background: linear-gradient(180deg, transparent 0%, rgba(199,164,106,0.08) 50%, transparent 100%);
  opacity: 0.4;
  z-index: 1;
}
.reveal__grid {
  position: relative; z-index: 2;
  height: 100%;
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center;
}
.reveal__left { padding: 0 1.5rem; max-width: 36rem; }
@media (min-width: 768px) { .reveal__left { padding: 0 3rem; } }
@media (min-width: 1024px) { .reveal__left { padding: 0 5rem; } }
.reveal__title {
  font-size: clamp(2.75rem, 6vw, 5rem);
  color: var(--bone);
  margin: 1rem 0 2rem;
}
.reveal__body {
  color: var(--bone-2);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 3rem;
}
.reveal__pillars {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 28rem;
}
.reveal__pillar {
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.reveal__pillar.is-visible { opacity: 1; transform: translateY(0); }
.reveal__pillar-icon {
  width: 2.25rem; height: 2.25rem;
  border: 1px solid var(--bone-5);
  border-radius: 0.25rem;
  display: grid; place-items: center;
  margin-bottom: 0.75rem;
  color: var(--bone-2);
}
.reveal__pillar-icon svg { width: 0.875rem; height: 0.875rem; }
.reveal__pillar-title { font-weight: 600; color: var(--bone); font-size: 0.875rem; }
.reveal__pillar-sub { font-size: 0.75rem; color: var(--bone-3); margin-top: 0.25rem; line-height: 1.4; }
.reveal__right {
  position: relative; height: 100%;
  display: flex; align-items: center; justify-content: center;
}
.reveal__product {
  position: relative;
  width: 80%;
  aspect-ratio: 5/3;
  transform: perspective(1200px) rotateY(-12deg) rotateX(4deg);
  filter: brightness(0.9) contrast(1.1) saturate(0.85);
  box-shadow: 0 60px 120px -20px rgba(0,0,0,0.8);
  animation: float 4s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: perspective(1200px) rotateY(-12deg) rotateX(4deg) translateY(0); }
  50% { transform: perspective(1200px) rotateY(-12deg) rotateX(4deg) translateY(-12px); }
}
.reveal__product img {
  width: 100%; height: 100%; object-fit: cover;
}
.reveal__shadow {
  position: absolute;
  bottom: -3rem; left: 50%;
  transform: translateX(-50%);
  width: 75%; height: 3rem;
  background: radial-gradient(ellipse, rgba(0,0,0,0.6) 0%, transparent 70%);
  filter: blur(12px);
}
@media (min-width: 768px) { .reveal__product { width: 90%; } }
@media (max-width: 767px) {
  .reveal__grid { grid-template-columns: 1fr; }
  .reveal__right { display: none; }
}

/* ============================================
   SCENE 09 — CATEGORY DEFINITION (white bg)
   No sticky: 5 vertical 100vh sections, each fully visible.
   Active state is signaled by brand colour (brass vs ink).
   ============================================ */
.cat {
  background: var(--bone);
  color: var(--ink);
  position: relative;
}
/* Brass accent line on screens 4-5: a subtle "horizon line" marking
   the transition from negation to affirmation. */
.cat::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--brass);
  z-index: 6;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.8s cubic-bezier(.16,1,.3,1);
}
.cat--on-pos::before { transform: scaleX(1); }
.cat__persistent {
  position: fixed;
  inset: 0;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.cat--in-view .cat__persistent { opacity: 1; }
.cat__persistent-mark {
  font-family: var(--font-mono);
  font-size: clamp(10rem, 32vw, 28rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  color: rgba(26, 22, 18, 0.04);
  line-height: 0.9;
  user-select: none;
  transition: color 0.6s ease;
}
.cat--on-pos .cat__persistent-mark { color: rgba(199, 164, 106, 0.12); }
/* Persistent background wordmark — always visible, anchors the eye
   through screen transitions and prevents "white void" effect. */
.cat__persistent {
  position: absolute;
  inset: 0;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none;
  z-index: 0;
}
.cat__persistent-mark {
  font-family: var(--font-mono);
  font-size: clamp(10rem, 32vw, 28rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  color: rgba(26, 22, 18, 0.04);
  line-height: 0.9;
  user-select: none;
  transition: color 0.6s ease;
}
.cat__persistent--pos .cat__persistent-mark {
  color: rgba(199, 164, 106, 0.12);
}
.cat__persistent-frame {
  position: absolute;
  inset: 2rem;
  border: 1px solid rgba(26, 22, 18, 0.08);
  pointer-events: none;
}

/* Top bar with brand mark + counter (now fixed, only visible in cat section) */
.cat__topbar {
  position: fixed;
  top: 5rem; left: 2rem; right: 2rem;
  display: flex; align-items: center; justify-content: space-between;
  z-index: 5;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.cat--in-view .cat__topbar { opacity: 1; }
@media (max-width: 767px) { .cat__topbar { top: 1.25rem; left: 1.25rem; right: 1.25rem; } }
.cat__brand {
  display: flex; align-items: center;
}
.cat__brand-name {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--ink);
}
.cat__counter {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  display: flex; align-items: center; gap: 0.375rem;
}
.cat__counter-current {
  font-weight: 700;
  font-size: 14px;
  color: var(--ink);
}
.cat__counter-sep { color: rgba(26, 22, 18, 0.4); }
.cat__counter-total { color: rgba(26, 22, 18, 0.4); }

/* Screen content — 5 vertical 100vh sections, each fully visible */
.cat__screen {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  width: 100%;
  text-align: center;
  padding: 7rem 1.5rem 5rem;
  z-index: 1;
  opacity: 0.4;
  transform: scale(0.96);
  transition: opacity 0.5s ease, transform 0.5s ease;
  border-top: 1px solid rgba(26, 22, 18, 0.08);
}
.cat__screen:first-child { border-top: 0; }
.cat__screen.is-active {
  opacity: 1;
  transform: scale(1);
}
/* Stagger inner elements when screen becomes active.
   Each child fades + slides in on its own delay → cinematic focus. */
.cat__screen-inner > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(.16,1,.3,1), transform 0.7s cubic-bezier(.16,1,.3,1);
}
.cat__screen.is-active .cat__screen-inner > * { opacity: 1; transform: translateY(0); }
.cat__screen.is-active .cat__icon,
.cat__screen.is-active .cat__brand-glyph { transition-delay: 0ms; }
.cat__screen.is-active .cat__step-tag { transition-delay: 90ms; }
.cat__screen.is-active .cat__heading { transition-delay: 180ms; }
.cat__screen.is-active .cat__sub { transition-delay: 320ms; }
.cat__screen-inner {
  max-width: 56rem;
  display: flex; flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.cat__screen--neg { color: rgba(26, 22, 18, 0.85); }
.cat__screen--pos { color: var(--ink); }
.cat__screen--pos .cat__heading,
.cat__screen--pos .cat__sub,
.cat__screen--pos .cat__step-tag,
.cat__screen--pos .cat__icon { color: var(--ink); }
.cat__screen--pos .cat__step-tag--brass { color: var(--brass); }

.cat__icon {
  width: 3.5rem; height: 3.5rem;
  color: rgba(26, 22, 18, 0.4);
  margin-bottom: 0.5rem;
}
.cat__screen--pos .cat__icon { color: var(--brass); }
.cat__icon svg { width: 100%; height: 100%; }

.cat__step-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.4em;
  color: rgba(26, 22, 18, 0.5);
  margin-bottom: 0.5rem;
}
.cat__step-tag--brass { color: var(--brass); }

.cat__heading {
  font-size: clamp(2.75rem, 8vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: var(--ink);
}
.cat__heading--brand {
  font-size: clamp(4rem, 14vw, 11rem);
  color: var(--ink);
  letter-spacing: -0.05em;
}
.cat__screen.is-active .cat__heading--brand {
  animation: bamosb-reveal 0.95s cubic-bezier(.16,1,.3,1) 0.18s both;
}
@keyframes bamosb-reveal {
  0% { opacity: 0; transform: translateY(40px) scale(0.7); letter-spacing: 0.25em; filter: blur(8px); }
  55% { opacity: 1; transform: translateY(-6px) scale(1.06); letter-spacing: -0.02em; filter: blur(0); }
  100% { opacity: 1; transform: translateY(0) scale(1); letter-spacing: -0.05em; filter: blur(0); }
}
.cat__heading--md {
  font-size: clamp(2.5rem, 6vw, 5rem);
}
.cat__sub {
  margin-top: 0.5rem;
  max-width: 32rem;
  font-size: clamp(0.875rem, 1.5vw, 1rem);
  line-height: 1.6;
  color: rgba(26, 22, 18, 0.7);
}
.cat__sub--brand {
  color: var(--ink);
  opacity: 0.85;
  max-width: 36rem;
  font-size: clamp(0.9375rem, 1.6vw, 1.125rem);
}
.cat__brand-glyph {
  width: 4.5rem; height: 4.5rem;
  color: var(--brass);
  margin-bottom: 0.5rem;
}
.cat__brand-glyph svg { width: 100%; height: 100%; }

/* Right-side 5-step navigation (fixed, only visible in cat section) */
.cat__nav {
  position: fixed;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  display: flex; flex-direction: column;
  gap: 1.25rem;
  padding: 0.5rem 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.cat--in-view .cat__nav { opacity: 1; }
@media (min-width: 768px) { .cat__nav { right: 2.5rem; gap: 1.5rem; } }
@media (max-width: 767px) { .cat__nav { display: none; } }
.cat__nav-item {
  appearance: none; -webkit-appearance: none;
  background: none; border: none; padding: 0;
  display: flex; align-items: center; gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: rgba(26, 22, 18, 0.4);
  cursor: pointer;
  transition: color 0.2s;
}
.cat__nav-item:hover { color: var(--ink); }
.cat__nav-num {
  font-size: 11px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  width: 1.5rem;
  text-align: right;
  color: rgba(26, 22, 18, 0.4);
  transition: color 0.2s;
}
.cat__nav-item:hover .cat__nav-num { color: var(--ink); }
.cat__nav-line {
  position: relative;
  display: block;
  width: 1.5rem; height: 1px;
  background: rgba(26, 22, 18, 0.2);
  transition: width 0.3s ease, background 0.3s;
}
.cat__nav-fill {
  position: absolute; top: 0; left: 0; bottom: 0;
  width: 0;
  background: var(--ink);
  transition: width 0.35s ease, background 0.3s;
}
.cat__nav-label {
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  opacity: 0;
  transition: max-width 0.3s ease, opacity 0.3s ease;
  color: var(--ink);
}
.cat__nav-item:hover .cat__nav-line { width: 2rem; }
.cat__nav-item:hover .cat__nav-label { max-width: 6rem; opacity: 1; }
.cat__nav-item.is-active .cat__nav-num {
  color: var(--brass);
  font-weight: 700;
  animation: nav-pulse 2.4s ease-in-out infinite;
}
@keyframes nav-pulse {
  0%, 100% { text-shadow: 0 0 0 rgba(199, 164, 106, 0); }
  50% { text-shadow: 0 0 12px rgba(199, 164, 106, 0.4); }
}
.cat__nav-item.is-active .cat__nav-line { background: var(--brass); width: 2rem; }
.cat__nav-item.is-active .cat__nav-fill {
  background: var(--brass);
  width: 100%;
  animation: nav-line-flow 2.4s ease-in-out infinite;
}
@keyframes nav-line-flow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.cat__nav-item.is-active .cat__nav-label { max-width: 6rem; opacity: 1; color: var(--brass); }
.cat__nav-item.is-active .cat__nav-label--brand { color: var(--brass); }

/* Bottom hint (only on first screen) */
.cat__hint {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center; gap: 0.5rem;
  z-index: 3;
  pointer-events: none;
  opacity: 0.4;
  transition: opacity 0.3s;
}
@media (max-width: 767px) { .cat__hint { display: none; } }
.cat__hint-label {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.4em;
  color: var(--ink);
}
.cat__hint-line {
  width: 1px; height: 2rem;
  background: linear-gradient(180deg, var(--ink), transparent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ============================================
   SCENE 10 — APPLICATIONS (4 sticky panels)
   ============================================ */
.apps { position: relative; }
.apps__intro {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  padding: 0 1.5rem;
}
.apps__intro-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: var(--bone);
  margin-top: 1rem;
}
.apps__stack {
  position: relative;
}
.apps__panel {
  position: sticky; top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}
.apps__bg {
  position: absolute; inset: 0;
}
.apps__bg img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.65) contrast(1.15) saturate(0.7);
}
.apps__bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(5,5,5,0.55) 0%, rgba(5,5,5,0.35) 35%, rgba(5,5,5,0.55) 65%, rgba(5,5,5,0.92) 100%);
}
.apps__panel-content {
  position: absolute;
  bottom: 6rem; left: 0; right: 0;
  padding: 0 2rem;
  z-index: 2;
}
@media (min-width: 768px) { .apps__panel-content { padding: 0 4rem; } }
.apps__num {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--brass);
  margin-bottom: 0.75rem;
}
.apps__panel-title {
  font-size: clamp(3rem, 7vw, 6rem);
  color: var(--bone);
}
.apps__panel-ctx {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--bone-2);
  max-width: 28rem;
  line-height: 1.6;
}
.apps__panel-note {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-4);
}

/* ============================================
   SCENE 11 — BENCHMARK
   ============================================ */
.bench {
  background: var(--ink);
  padding: 8rem 0;
}
.bench__inner {
  max-width: 75rem; margin: 0 auto;
  padding: 0 1.5rem;
}
@media (min-width: 768px) { .bench__inner { padding: 0 3rem; } }
.bench__head { text-align: center; margin-bottom: 5rem; }
.bench__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: var(--bone);
  margin-top: 1rem;
}
.bench__sub {
  margin: 1.5rem auto 0;
  max-width: 36rem;
  color: var(--bone-3);
  font-size: 0.875rem;
  line-height: 1.6;
}
.bench__row {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--bone-10);
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.bench__row.is-visible { opacity: 1; transform: translateY(0); }
.bench__row-title {
  font-size: 1.125rem; font-weight: 600;
  color: var(--bone);
}
.bench__row-ctx {
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-4);
}
.bench__bars { margin-top: 1.25rem; display: flex; flex-direction: column; gap: 0.75rem; }
.bench__bar {
  display: grid; grid-template-columns: 5rem 1fr; align-items: center; gap: 0.75rem;
}
.bench__bar-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brass);
}
.bench__bar--osb4 .bench__bar-label { color: var(--bone-3); }
.bench__bar-track {
  position: relative;
  height: 2.5rem;
  background: rgba(245, 244, 239, 0.05);
  border-radius: 0.125rem;
  overflow: hidden;
}
.bench__bar-fill {
  position: absolute; top: 0; left: 0; bottom: 0;
  width: 0%;
  background: var(--brass);
  border-radius: 0.125rem;
  transition: width 1.4s cubic-bezier(.16,1,.3,1);
}
.bench__bar--osb4 .bench__bar-fill { background: rgba(245, 244, 239, 0.4); }
.bench__bar-value {
  position: absolute; right: 0.75rem; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--bone);
  font-variant-numeric: tabular-nums;
  opacity: 0;
  transition: opacity .6s ease .5s;
}
.bench__bar--osb4 .bench__bar-value { color: var(--bone-3); }
.bench__row.is-visible .bench__bar-value { opacity: 1; }

/* ============================================
   SCENE 12 — STRENGTH-TO-WEIGHT (新)
   ============================================ */
.strength {
  padding: 7rem 0 5rem;
  background: var(--ink);
}
.strength__inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.strength__hero-stat {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 1.5rem;
  margin: 3rem 0 4rem;
  padding: 2.5rem 1.5rem;
  border: 1px solid var(--brass);
  border-radius: 0.5rem;
  background: linear-gradient(135deg, rgba(199,164,106,0.08) 0%, rgba(199,164,106,0.02) 100%);
  text-align: center;
}
@media (min-width: 768px) {
  .strength__hero-stat { grid-template-columns: auto 1fr; text-align: left; padding: 3rem 4rem; gap: 3rem; }
}
.strength__hero-stat-num {
  display: flex; align-items: baseline; justify-content: center;
  font-variant-numeric: tabular-nums;
  line-height: 0.9;
  gap: 0.5rem;
}
@media (min-width: 768px) { .strength__hero-stat-num { justify-content: flex-start; } }
.strength__hero-stat-mm {
  font-size: clamp(4.5rem, 12vw, 8.5rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  color: var(--brass);
  line-height: 0.9;
}
.strength__hero-stat-eq {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 400;
  color: var(--brass);
  opacity: 0.7;
  line-height: 0.9;
}
.strength__hero-stat-unit {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 500;
  color: var(--brass);
  margin-left: 0.25rem;
  letter-spacing: 0.05em;
  line-height: 0.9;
}
.strength__hero-stat-label {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--bone);
  margin-bottom: 0.5rem;
}
.strength__hero-stat-ctx {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-3);
}
@media (min-width: 768px) { .strength__inner { padding: 0 3rem; } }
.strength__head {
  text-align: center;
  margin-bottom: 4rem;
}
.strength__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  color: var(--bone);
  margin-top: 1.5rem;
}
.strength__sub {
  margin: 1.5rem auto 0;
  max-width: 40rem;
  color: var(--bone-3);
  font-size: 0.9375rem;
  line-height: 1.6;
}
.strength__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 900px) {
  .strength__grid { grid-template-columns: 1fr 1.4fr; gap: 4rem; }
}
.strength__numbers {
  display: flex; flex-direction: column;
  gap: 2rem;
}
.strength__num {
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.strength__num.is-visible { opacity: 1; transform: translateY(0); }
.strength__num-val {
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--bone);
  font-variant-numeric: tabular-nums;
  display: flex; align-items: baseline; gap: 0.125rem;
}
.strength__num-unit {
  font-size: 0.5em;
  font-weight: 600;
  color: var(--brass);
  margin-left: 0.125rem;
}
.strength__num-rule {
  width: 2.5rem; height: 1px;
  background: var(--bone-5);
  margin: 1rem 0;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1.2s cubic-bezier(.16,1,.3,1) 0.2s;
}
.strength__num-rule--brass { background: var(--brass); }
.strength__num.is-visible .strength__num-rule { transform: scaleX(1); }
.strength__num-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--bone);
}
.strength__num-ctx {
  margin-top: 0.375rem;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-3);
}
.strength__num--hero .strength__num-val { color: var(--brass); }

.strength__visual {
  background: rgba(245, 244, 239, 0.02);
  border: 1px solid var(--bone-10);
  border-radius: 0.5rem;
  padding: 1.5rem;
}
.strength__svg {
  width: 100%;
  height: auto;
  display: block;
}

.strength__benefits {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--bone-10);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .strength__benefits { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
}
.strength__benefit {
  display: flex; align-items: flex-start; gap: 1rem;
  opacity: 0; transform: translateY(15px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.strength__benefit.is-visible { opacity: 1; transform: translateY(0); }
.strength__benefit-mark {
  flex-shrink: 0;
  width: 2.5rem; height: 2.5rem;
  border: 1px solid var(--brass);
  border-radius: 0.5rem;
  display: grid; place-items: center;
  color: var(--brass);
}
.strength__benefit-mark svg { width: 1.125rem; height: 1.125rem; }
.strength__benefit-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--bone);
}
.strength__benefit-sub {
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: var(--bone-3);
  line-height: 1.5;
}
.strength__cite {
  margin-top: 3rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-4);
}

/* ============================================
   SCENE 13 — FACTORY (was 12)
   ============================================ */
.factory__bg {
  position: absolute; inset: 0;
  z-index: 0;
  overflow: hidden;
}
.factory__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.7) contrast(1.1) saturate(0.6);
}
.factory__bg::after {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(5,5,5,0.5) 0%, rgba(5,5,5,0.25) 40%, rgba(5,5,5,0.85) 100%),
    linear-gradient(90deg, rgba(5,5,5,0.7) 0%, transparent 50%, transparent 80%, rgba(5,5,5,0.5) 100%);
}
.factory__content {
  position: relative; z-index: 2;
  min-height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center;
  padding: 6rem 1.5rem;
  max-width: 72rem;
}
@media (min-width: 768px) { .factory__content { padding: 6rem 3rem; } }
@media (min-width: 1024px) { .factory__content { padding: 6rem 5rem; } }
.factory__title {
  font-size: clamp(3rem, 7vw, 6.5rem);
  color: var(--bone);
  margin-top: 1rem;
}
.factory__nums {
  margin-top: 4rem;
  display: grid; grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 56rem;
}
@media (min-width: 768px) {
  .factory__nums { grid-template-columns: repeat(3, 1fr); gap: 3rem; }
}
.factory__num-item {
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
}
.factory__num-item.is-visible { opacity: 1; transform: translateY(0); }
.factory__num-val {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--bone);
  font-variant-numeric: tabular-nums;
}
.factory__num-unit {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--brass);
}
.factory__num-label {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-2);
}
.factory__carbon {
  margin-top: 5rem;
  max-width: 50rem;
  padding-top: 3rem;
  border-top: 1px solid var(--bone-10);
}
.factory__carbon-head {
  display: flex; align-items: center; gap: 1.5rem;
  flex-wrap: wrap;
}
.factory__carbon-range {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--brass);
  font-variant-numeric: tabular-nums;
}
.factory__carbon-body {
  margin-top: 1rem;
  color: var(--bone-2);
  font-size: 0.875rem;
  line-height: 1.6;
  max-width: 36rem;
}
.factory__carbon-sources {
  margin-top: 0.5rem;
  color: var(--bone-3);
  font-size: 0.75rem;
  line-height: 1.6;
  max-width: 36rem;
}
.factory__partner {
  margin-top: 3rem;
  display: flex; align-items: flex-start; gap: 1.25rem;
  max-width: 50rem;
  padding: 1.5rem;
  border: 1px solid var(--bone-10);
  border-radius: 0.5rem;
  background: rgba(245,244,239,0.02);
}
.factory__partner-mark {
  flex-shrink: 0;
  width: 2.5rem; height: 2.5rem;
  border: 1px solid var(--brass);
  border-radius: 50%;
  display: grid; place-items: center;
  position: relative;
}
.factory__partner-mark::after {
  content: ''; width: 0.5rem; height: 0.5rem;
  background: var(--brass); border-radius: 50%;
}
.factory__partner-title {
  font-weight: 600;
  color: var(--bone);
  font-size: 0.875rem;
}
.factory__partner-body {
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: var(--bone-3);
  line-height: 1.5;
}

/* ============================================
   SCENE 14 — CTA
   ============================================ */
.cta {
  background: var(--ink);
  padding: 8rem 0 12rem;
}
.cta__inner {
  max-width: 56rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: center;
}
.cta__title {
  font-size: clamp(3.5rem, 10vw, 9rem);
  color: var(--bone);
}
.cta__sub {
  margin-top: 2rem;
  max-width: 36rem;
  margin-left: auto; margin-right: auto;
  color: var(--bone-3);
  font-size: 0.875rem;
  line-height: 1.6;
}
.cta__buttons {
  margin-top: 3rem;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 1rem;
}
@media (min-width: 640px) { .cta__buttons { flex-direction: row; } }
.cta__btn {
  display: inline-flex; align-items: center; gap: 0.75rem;
  padding: 1rem 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 9999px;
  text-decoration: none;
  transition: background .2s, color .2s, border-color .2s;
}
.cta__btn--primary { background: var(--bone); color: var(--ink); }
.cta__btn--primary:hover { background: var(--brass); }
.cta__btn--secondary { border: 1px solid var(--bone-5); color: var(--bone); }
.cta__btn--secondary:hover { border-color: var(--brass); color: var(--brass); }
.cta__btn svg { width: 1rem; height: 1rem; }
.cta__footer {
  margin-top: 6rem;
  padding-top: 3rem;
  border-top: 1px solid var(--bone-10);
  display: flex; flex-direction: column;
  align-items: center; justify-content: space-between;
  gap: 1.5rem;
}
@media (min-width: 768px) { .cta__footer { flex-direction: row; } }
.cta__brand { display: flex; align-items: center; }
.cta__brand-name {
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--bone);
  font-size: 1rem;
}
.cta__copy {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-4);
  text-align: center;
}
.cta__copy--secondary {
  margin-top: 0.5rem;
  color: var(--bone-4);
  letter-spacing: 0.2em;
}
.cta__legal {
  margin-top: 1rem;
  display: flex; gap: 0.5rem; justify-content: center;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}
@media (min-width: 768px) { .cta__legal { justify-content: flex-end; } }
.cta__legal-link {
  color: var(--bone-3);
  text-decoration: none;
  transition: color 0.2s;
}
.cta__legal-link:hover { color: var(--brass); }
.cta__legal-sep { color: var(--bone-4); }
.cta__address {
  margin-top: 0.5rem;
  font-style: normal;
  font-size: 11px;
  color: var(--bone-4);
}
.cta__address a {
  color: var(--bone-3);
  text-decoration: none;
  transition: color 0.2s;
}
.cta__address a:hover { color: var(--brass); }
.cta__footer-meta {
  text-align: center;
}
@media (min-width: 768px) {
  .cta__footer-meta { text-align: right; }
}

/* Contact strip — Email / WhatsApp / LinkedIn */
.cta__contact {
  margin-top: 4rem;
  display: flex; flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.cta__contact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-4);
}
.cta__contact-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  width: 100%;
  max-width: 56rem;
}
@media (min-width: 768px) {
  .cta__contact-strip { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
}
.cta__contact-item {
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--bone-10);
  border-radius: 0.5rem;
  background: rgba(245, 244, 239, 0.02);
  text-decoration: none;
  color: var(--bone);
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.cta__contact-item:hover {
  border-color: var(--brass);
  background: rgba(199, 164, 106, 0.05);
  transform: translateY(-1px);
}
.cta__contact-icon {
  flex-shrink: 0;
  width: 2.5rem; height: 2.5rem;
  display: grid; place-items: center;
  border: 1px solid var(--bone-5);
  border-radius: 0.5rem;
  color: var(--bone-2);
}
.cta__contact-icon svg { width: 1.125rem; height: 1.125rem; }
.cta__contact-item:hover .cta__contact-icon {
  border-color: var(--brass);
  color: var(--brass);
}
.cta__contact-text {
  display: flex; flex-direction: column;
  min-width: 0;
}
.cta__contact-name {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--bone-3);
  margin-bottom: 0.125rem;
}
.cta__contact-value {
  font-size: 0.875rem;
  color: var(--bone);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
@media (max-width: 480px) {
  .cta__contact-value { font-size: 0.75rem; }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
*:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
  border-radius: 2px;
}
.cta__btn:focus-visible {
  outline-offset: 4px;
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .hero__bg img, .reveal__product { animation: none !important; }
}

/* Image fallback: brass-tinted background shows if image fails to load */
img { background: rgba(199, 164, 106, 0.04); }
img.img--broken {
  background: rgba(199, 164, 106, 0.1);
  min-height: 40vh;
  outline: 1px dashed rgba(199, 164, 106, 0.4);
  outline-offset: -8px;
}

/* Print styles */
@media print {
  html, body { background: white; color: black; }
  .hero__bg, .strand__bg, .press__bg, .resin__bg, .factory__bg, .apps__bg { display: none; }
  .scene, .cat, .apps, .cta { background: white; color: black; min-height: auto; }
  .cta__btn { border: 1px solid black; color: black; background: white; }
}

/* Skip link (for keyboard users) */
.skip-link {
  position: absolute;
  top: -100px; left: 1rem;
  z-index: 10000;
  padding: 0.75rem 1.25rem;
  background: var(--brass);
  color: var(--ink);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: 0.25rem;
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }


@media (max-width: 768px) {

/* ============================================
   MOBILE RESPONSIVE FIXES (≤768px)
   ============================================ */

/* ── 00. SHOW ALL BACKGROUNDS ON MOBILE ── */
.hero__bg, .strand__bg, .press__bg, .resin__bg, .factory__bg, .growth__bg-bamboo, .growth__bg-forest {
  display: block !important;
  visibility: visible;
}
.hero__bg img, .strand__bg img, .press__bg img, .resin__bg img, .factory__bg img {
  display: block !important;
  width: 100%;
  height: 100%;
  object-fit: cover;
}




/* ── 00b. REDUCE GRADIENT OVERLAY ON MOBILE ── */
.hero__bg::after,
.strand__bg::after,
.press__bg::after,
.resin__bg::after,
.factory__bg::after,
.growth__bg-bamboo::after,
.growth__bg-forest::after {
  background: linear-gradient(180deg, rgba(5,5,5,0.3) 0%, rgba(5,5,5,0.1) 40%, rgba(5,5,5,0.5) 100%) !important;
}

/* ── 01. TOPNAV: 移动端汉堡菜单 ── */
.topnav {
  padding: 0.875rem 1rem;
  align-items: center;
}
.topnav__menu {
  display: none;        /* 默认隐藏 */
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, 0.97);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  z-index: 9998;
}
.topnav__menu.is-open {
  display: flex;
}
.topnav__menu a {
  font-size: 13px;
  letter-spacing: 0.2em;
  padding: 1rem 2rem;
  width: 100%;
  text-align: center;
  border-radius: 0;
}
/* 汉堡按钮 */
.topnav__burger {
  display: flex !important;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 9999;
  margin-left: auto;
}
.topnav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--bone);
  transition: transform 0.25s, opacity 0.25s;
}
.topnav__burger.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.topnav__burger.is-active span:nth-child(2) { opacity: 0; }
.topnav__burger.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── 02. HERO ── */
.hero {
  padding: 0 1rem 4rem;
  min-height: 100svh;   /* svh = 实际可视高度 */
}
.hero__title {
  font-size: clamp(2.25rem, 10vw, 4rem);  /* 移动端更大字号 */
  line-height: 1;
  margin-bottom: 1rem;
}
.hero__sub {
  font-size: 0.7rem;
  max-width: 100%;
}
.hero__scroll {
  padding: 0 1rem;
}

/* ── 03. GRID 双列 → 单列 ── */
.growth__sticky {
  grid-template-columns: 1fr !important;
}
.resin__content {
  grid-template-columns: 1fr !important;
}
.forming__grid {
  grid-template-columns: 1fr !important;
  position: static !important;
}
.reveal__grid {
  grid-template-columns: 1fr !important;
  height: auto !important;
}

/* ── 04. CAT TOPBAR ── */
.cat__persistent-mark {
  font-size: clamp(5rem, 28vw, 10rem) !important;  /* 缩小 50% */
  letter-spacing: -0.06em !important;
}
.cat__nav {
  display: none !important;  /* 移动端隐藏分类导航 */
}

/* ── 05. BENCH ── */
.bench {
  padding: 4rem 0;
}
.bench__inner {
  padding: 0 1rem !important;
}
.bench__head {
  margin-bottom: 2.5rem;
}
.bench__title {
  font-size: clamp(1.75rem, 7vw, 3.5rem) !important;
}
.bench__sub {
  font-size: 0.8rem;
}
.bench__row {
  padding: 1.25rem 0;
}

/* ── 06. APPS ── */
.apps__intro {
  min-height: 80vh;
  padding: 2rem 1rem;
}
.apps__intro-title {
  font-size: clamp(1.75rem, 7vw, 4rem) !important;
}
.apps__panel {
  position: relative !important;
  height: auto !important;
  min-height: 100svh;
}
.apps__panel-content {
  bottom: 3rem !important;
  padding: 0 1.25rem !important;
}
.apps__panel-title {
  font-size: clamp(2rem, 9vw, 4rem) !important;
}
.apps__bg { display: block !important; }  /* 移动端显示背景图 */
.apps__bg img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}

/* ── 07. STRENGTH ── */
.strength__hero-stat-num {
  font-size: clamp(3.5rem, 15vw, 6rem) !important;
}
.strength__hero-stat-eq {
  font-size: clamp(2rem, 8vw, 3.5rem) !important;
}
.strength__hero-stat-unit {
  font-size: clamp(1.25rem, 4vw, 2rem) !important;
}
.strength__grid {
  gap: 1.5rem;
}

/* ── 08. CTA ── */
.cta__contact-strip {
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.5rem !important;
}
.cta__contact-item {
  width: 100%;
}
.cta__footer {
  padding: 1.5rem 1rem !important;
}
.cta__buttons {
  flex-direction: column !important;
  gap: 0.75rem;
}
.cta__buttons .cta__btn {
  width: 100%;
  text-align: center;
  justify-content: center;
}

/* ── 09. FACTORY ── */
.factory__nums {
  grid-template-columns: 1fr 1fr !important;
  gap: 1.5rem;
  padding: 0 1rem;
}

/* ── 10. 全局通用 ── */
.scene {
  min-height: 100vh;
  padding: 4rem 0;
}
.scene__content {
  padding: 0 1.25rem;
}
.scene__title {
  font-size: clamp(1.75rem, 6vw, 3.5rem) !important;
}
.scene__ctx {
  font-size: 0.8rem;
}

/* ── 11. 滚动条和溢出 ── */
* { overflow-wrap: break-word; }
html { scroll-behavior: smooth; }

/* ── 12. 最大宽度约束（小屏） ── */
.scene__content,
.bench__inner,
.factory__nums,
.cta__footer {
  max-width: 100vw;
  overflow-x: hidden;
}


}