/* ================================================
   Sang Cheong — Global Stylesheet
   ================================================ */

/* --- CSS Variables --- */
:root {
  --color-primary: #C41230;
  --color-primary-dark: #8B1E2C;
  --color-gold: #B78E6C;
  --color-beige: #C3B69C;
  --color-text: #5E514A;
  --color-dark: #342C2A;
  --color-white: #FFFFFF;
  --color-light: #F7F7F5;
  --color-gray: #989898;
  --color-border: #E8E4E0;

  --font-en: 'Inter', sans-serif;
  --font-zh-hant: 'Noto Sans TC', 'PingFang TC', 'Noto Sans SC', sans-serif;
  --font-zh-hans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans TC', sans-serif;
  --font-serif: 'Playfair Display', serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-body: 1rem;
  --font-size-md: 1.1rem;
  --font-size-lg: 1.2rem;

  --line-height-tight: 1.3;
  --line-height-base: 1.7;
  --line-height-relaxed: 1.8;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --radius-input: 4px;

  --max-width: 1400px;
  --header-height: 80px;
  --section-padding: 120px 0;
  --section-padding-mobile: 80px 0;

  --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-slow: all 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-en);
  font-size: var(--font-size-body);
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-white);
  line-height: var(--line-height-base);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Chinese font override */
[lang="zh-Hant"] body {
  font-family: var(--font-zh-hant);
}

[lang="zh-Hans"] body {
  font-family: var(--font-zh-hans);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
  line-height: var(--line-height-tight);
  color: var(--color-dark);
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: var(--section-padding);
  position: relative;
  overflow-x: hidden;
}

.section--light {
  background-color: var(--color-light);
}

.section--dark {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.section--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.text-center {
  text-align: center;
}

.text-gold {
  color: var(--color-gold);
}

.text-primary {
  color: var(--color-primary);
}

.text-lead {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
}

.text-quote {
  font-size: var(--font-size-md);
  font-style: italic;
  line-height: var(--line-height-relaxed);
  max-width: 600px;
  margin: 0 auto;
  text-wrap: pretty;
}

[lang="zh-Hant"] .text-quote,
[lang="zh-Hans"] .text-quote {
  word-break: keep-all;
  overflow-wrap: normal;
  white-space: nowrap;
  max-width: none;
}

/* --- Typography --- */
.heading-xl {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 4.8vw, 3.8rem);
  color: var(--color-dark);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 0.5em;
}

.heading-lg {
  font-size: 32px;
  color: var(--color-dark);
  letter-spacing: -0.01em;
  margin-bottom: 0.5em;
}

.heading-md {
  font-size: 24px;
  color: var(--color-dark);
  margin-bottom: 0.5em;
}

.heading-sm {
  font-size: clamp(1rem, 1.3vw, 1.2rem);
  color: var(--color-dark);
  margin-bottom: 0.5em;
  font-weight: 500;
}

.subtitle {
  font-size: var(--font-size-md);
  color: var(--color-gray);
  max-width: 750px;
  margin: 0 auto 2em;
  line-height: 1.75;
}

.section-label {
  display: inline-block;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1em;
  position: relative;
  padding-left: 2em;
}
.reveal--delay-5 { transition-delay: 0.5s; }

.section-label,
.heading-lg,
.heading-md {
  transform-origin: center bottom;
}

.title-pop {
  animation: titleBottomPop 0.9s cubic-bezier(0.2, 0.9, 0.2, 1) both;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 1.5em;
  height: 1px;
  background-color: var(--color-gold);
}

/* --- Divider --- */
.divider {
  width: 60px;
  height: 2px;
  background-color: var(--color-gold);
  margin: 2em auto;
}

.divider--left {
  margin-left: 0;
}

/* --- Button --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 14px 36px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-dark);
  border-color: var(--color-dark);
}

.btn--outline:hover {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.btn--gold {
  background-color: transparent;
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.btn--gold:hover {
  background-color: var(--color-gold);
  color: var(--color-white);
}

.btn--white {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--white:hover {
  background-color: var(--color-white);
  color: var(--color-dark);
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: box-shadow 0.2s ease;
  background-color: transparent;
}

.header--scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 1px 0 var(--color-border);
}

.header--scrolled .header__logo img {
  filter: none;
}

.header--scrolled .nav__link {
  color: var(--color-dark);
}

.header--scrolled .lang-switch a {
  color: var(--color-dark);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
}

.header__logo img {
  height: 56px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: var(--transition);
}

.header--scrolled .header__logo img {
  filter: none;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: 2.5em;
}

.nav__item {
  position: relative;
}

.nav__link {
  font-size: var(--font-size-base);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-white);
  position: relative;
  padding: 0.5em 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-gold);
  transition: var(--transition);
}

.nav__link:hover::after,
.nav__link--active::after,
.nav__item:hover > .nav__link::after {
  width: 100%;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 18px);
  left: 50%;
  min-width: 190px;
  padding: 0.75em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 18px 50px rgba(52, 44, 42, 0.16);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 8px);
  transition: var(--transition);
  z-index: 20;
}

.nav-dropdown::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -20px;
  height: 20px;
}

.nav__item:hover .nav-dropdown,
.nav__item:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav-dropdown__link {
  display: block;
  padding: 0.65em 0.85em;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  white-space: nowrap;
}

.nav-dropdown__link:hover {
  color: var(--color-primary);
  background-color: var(--color-light);
}

/* Language Switch */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.75em;
  margin-left: 2em;
  padding-left: 2em;
  border-left: 1px solid rgba(255, 255, 255, 0.3);
}

.header--scrolled .lang-switch {
  border-left-color: var(--color-border);
}

.lang-switch a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.lang-switch a:hover,
.lang-switch a.active {
  color: var(--color-gold);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
  z-index: 1001;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: var(--transition);
}

.header--scrolled .menu-toggle span {
  background-color: var(--color-dark);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  isolation: isolate;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transform-origin: center;
  animation: heroSlowZoomIn 9s ease-out forwards;
}

.hero__video {
  background: #1b1716 url('../images/hero-factory-background.webp') center / cover no-repeat;
  animation: none;
}

.manufacturing-video-section {
  background: #f0ece8;
}

.manufacturing-video {
  width: min(100%, 960px);
  aspect-ratio: 960 / 544;
  margin: 2.5rem auto 0;
  background: #171312;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(52, 44, 42, 0.18);
}

.manufacturing-video__player {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: #171312;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(20, 15, 14, 0.82) 0%, rgba(52, 44, 42, 0.65) 60%, rgba(139, 30, 44, 0.45) 100%);
  z-index: 1;
  opacity: 1;
  transition: opacity 3.4s cubic-bezier(0.25, 1, 0.5, 1);
  pointer-events: none;
}

.hero--video-playing::after {
  opacity: 0;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: 0 20px;
  max-width: 1000px;
  transition: opacity 3s ease, transform 3s ease, visibility 0s linear 3s;
}

.hero--video-playing .hero__content {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-12px);
}

.hero__title {
  font-size: clamp(2.8rem, 5.5vw, 4.6rem);
  font-weight: 400;
  line-height: 1.08;
  margin-bottom: 0.6em;
  color: #FFFFFF;
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
  opacity: 0;
  transform: translateY(30px);
  animation: titleBottomPop 1.1s cubic-bezier(0.2, 0.9, 0.2, 1) forwards 0.32s;
}

.hero__subtitle {
  font-size: clamp(0.98rem, 1.4vw, 1.16rem);
  font-weight: 300;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 2em;
  line-height: 1.75;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s ease forwards 0.7s;
}

.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s ease forwards 1s;
}

.btn--video {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border-color: #ff0033;
  background-color: #ff0033;
  color: #fff;
}

.btn--video:hover {
  border-color: #d9002b;
  background-color: #d9002b;
  color: #fff;
}

.btn__play {
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 10px solid currentColor;
}

.hero__scroll {
  position: absolute;
  z-index: 2;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-white);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeInUp 1s ease forwards 1.2s;
}

.hero__scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background-color: var(--color-gold);
  margin: 10px auto 0;
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.5; }
}

@keyframes heroSlowZoomIn {
  from { transform: scale(1); }
  to { transform: scale(1.08); }
}

@media (prefers-reduced-motion: reduce) {
  .hero__content,
  .hero::after {
    transition: none;
  }
}

@keyframes titleBottomPop {
  0% {
    opacity: 0;
    transform: translateY(44px) scale(0.98);
    filter: blur(3px);
  }
  70% {
    opacity: 1;
    transform: translateY(-3px) scale(1.005);
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  right: clamp(18px, 3vw, 34px);
  bottom: clamp(18px, 3vw, 34px);
  z-index: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid rgba(182, 30, 55, 0.18);
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.94);
  color: var(--color-primary);
  box-shadow: 0 14px 34px rgba(45, 37, 34, 0.16);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.22s ease, transform 0.22s ease, background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-white);
  outline: none;
}

.back-to-top svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top {
    transition: none;
  }
  .hero__bg,
  .page-banner,
  .hero__title,
  .hero__subtitle,
  .hero__cta,
  .hero__scroll,
  .page-banner__title,
  .page-banner__subtitle,
  .title-pop {
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
    filter: none !important;
  }

  .service-card__image,
  .business-hub-card img,
  .application-card img,
  .gallery-grid img {
    transition: none;
    transform: none;
  }
}

/* --- Service Cards --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 3em;
}

.service-card {
  position: relative;
  padding: 3em 2em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-slow);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(52, 44, 42, 0.1);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card__number {
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--color-beige);
  opacity: 0.5;
  margin-bottom: 0.5em;
}

.service-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 1em;
}

.service-card__text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text);
}

.service-card__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  object-fit: cover;
  margin-bottom: 1.5em;
  border-radius: var(--radius-md);
  background-color: var(--color-light);
  transform: scale(1);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.service-card:hover .service-card__image {
  transform: scale(1.05);
}

/* --- Business pages --- */
.business-section {
  padding-top: 80px;
}

.process-switch {
  padding: 56px 0 0;
  background-color: var(--color-white);
  transition: background-color 0.2s ease;
}

.process-switch--light {
  background-color: var(--color-light);
}

.process-switch .business-subnav {
  margin-bottom: 0;
}

.process-switch ~ .process-panel:not([hidden]) {
  padding-top: 44px;
}

.business-subnav {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 4em;
}

.business-subnav__link {
  appearance: none;
  padding: 0.85em 1.25em;
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.4;
  cursor: pointer;
}

.business-subnav__link:hover,
.business-subnav__link--active {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-white);
}

.process-panel[hidden] {
  display: none;
}

.business-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 3em;
}

.business-hub-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 2em;
  border: 1px solid var(--color-border);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  overflow: hidden;
}

.business-hub-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(52, 44, 42, 0.1);
}

.business-hub-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 1.5em;
  transform: scale(1);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.business-hub-card:hover img {
  transform: scale(1.05);
}

.business-hub-card span {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  color: var(--color-beige);
  line-height: 1;
  margin-bottom: 0.35em;
}

.business-hub-card h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.75em;
}

.business-hub-card p {
  font-size: 0.95rem;
  line-height: 1.75;
}

.business-hub-card strong {
  display: inline-flex;
  margin-top: auto;
  padding-top: 1em;
  color: var(--color-primary);
  font-size: 0.9rem;
}

.business-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.business-flow--six {
  grid-template-columns: repeat(6, 1fr);
  margin-top: 3em;
}

.business-flow__item {
  min-height: 120px;
  padding: 1.25em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.business-flow__item:hover {
  border-color: rgba(182, 30, 55, 0.3);
  box-shadow: 0 14px 32px rgba(45, 37, 34, 0.08);
  transform: translateY(-3px);
}

.business-flow__item span {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-beige);
  margin-bottom: 0.5em;
}

.business-flow__item strong {
  color: var(--color-dark);
  font-size: 0.95rem;
  line-height: 1.5;
}

.product-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 5vw;
  align-items: center;
  margin-top: 5em;
  min-height: auto;
}

.product-feature__media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-md);
  background-color: var(--color-light);
}

.content-image-frame {
  position: relative;
  display: block;
  min-width: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background-color: var(--color-light);
}

.content-image-frame > img {
  display: block;
  width: 100%;
  max-width: none;
  height: 100%;
  margin: 0;
  border: 0;
  border-radius: 0;
  object-fit: cover;
  transform: scale(1);
  transition: transform 0.7s cubic-bezier(0.22, 1, 0.36, 1), filter 0.45s ease;
}

.content-image-frame--service {
  aspect-ratio: 16 / 9;
  margin-bottom: 1.5em;
  border-radius: var(--radius-md);
}

.content-image-frame--business {
  aspect-ratio: 3 / 2;
  margin-bottom: 1.5em;
  border-radius: var(--radius-md);
}

.content-image-frame--application,
.content-image-frame--gallery,
.content-image-frame--testing {
  aspect-ratio: 4 / 3;
}

.testing-gallery--hero .content-image-frame--testing,
.content-image-frame--feature {
  aspect-ratio: 16 / 9;
}

.testing-gallery--hero .content-image-frame--testing {
  border: 1px solid var(--color-border);
}

.content-image-frame--square {
  aspect-ratio: 1;
}

.product-feature--reverse {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
}

.product-feature--reverse .product-feature__media {
  order: 2;
}

.product-feature__media img,
.business-image {
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.product-feature:first-of-type .product-feature__media {
  background-color: #000000;
}

.product-feature:nth-of-type(2) .product-feature__media {
  background-color: #8B8B8B;
}

img[src*="imgi_3_imgi_12_s9-9_pixian_ai-MQZtGAKH.png"],
img[src*="imgi_4_imgi_4_s2-1-2_pixian_ai-CAyCgfJb.png"] {
  box-sizing: border-box;
  padding: 6%;
}

.tag-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 1.5em;
}

.tag-list span {
  padding: 0.55em 0.85em;
  border: 1px solid var(--color-border);
  background-color: var(--color-light);
  color: var(--color-dark);
  font-size: 0.82rem;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 3em;
}

.application-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  overflow: hidden;
}

.application-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 50px rgba(52, 44, 42, 0.1);
}

.application-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background-color: var(--color-light);
  border-radius: 8px;
  transform: scale(1);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.application-card:hover img {
  transform: scale(1.05);
}

.application-card div {
  padding: 1.6em;
}

.application-card span {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1;
  color: var(--color-beige);
  margin-bottom: 0.45em;
}

.application-card h3 {
  font-size: 1.12rem;
  font-weight: 600;
  margin-bottom: 0.65em;
}

.application-card p {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--color-text);
}

.service-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 4em;
}

.service-detail-card {
  padding: 2em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.service-detail-card span {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--color-beige);
  line-height: 1;
  margin-bottom: 0.5em;
}

.service-detail-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75em;
}

.service-detail-card p {
  font-size: 0.92rem;
  line-height: 1.75;
}

/* --- Materials --- */
.materials-grid {
  display: flex;
  justify-content: center;
  gap: 3em;
  flex-wrap: wrap;
  margin-top: 3em;
}

.material-item {
  text-align: center;
  width: 140px;
}

.material-item img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  box-sizing: border-box;
  padding: 8px;
  border-radius: 50%;
  margin: 0 auto 1em;
  border: 2px solid var(--color-border);
  transition: var(--transition);
}

.material-item:hover img {
  border-color: var(--color-gold);
  transform: scale(1.05);
}

.material-item span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-dark);
}

/* --- Process Timeline --- */
.process-timeline {
  position: relative;
  max-width: 900px;
  margin: 3em auto;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  height: 100%;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold), var(--color-primary));
}

.process-step {
  display: flex;
  align-items: flex-start;
  gap: 2.5em;
  margin-bottom: 3em;
  position: relative;
  transition: transform 0.25s ease;
}

.process-step:hover {
  transform: translateY(-2px);
}

.process-step__number {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--color-white);
  border: 2px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-gold);
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.process-step:hover .process-step__number {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.process-step__content {
  padding-top: 0.75em;
}

.process-step__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5em;
}

.process-step__desc {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
}

.process-step__icon {
  width: 200px;
  height: 200px;
  flex-shrink: 0;
  border-radius: var(--radius-lg);
  object-fit: cover;
  max-width: 100%;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.process-step:hover .process-step__icon {
  box-shadow: 0 12px 28px rgba(45, 37, 34, 0.12);
  transform: translateY(-2px);
}

/* --- Stats --- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2em;
  padding: 4em 0;
}

.stat-item {
  text-align: center;
}

.stat-item__number {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  color: var(--color-primary);
  margin-bottom: 0.2em;
  font-variant-numeric: tabular-nums;
  transform-origin: 50% 100%;
}

.stat-item__number.is-rolling {
  animation: counter-roll 2s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes counter-roll {
  0% {
    opacity: 0;
    transform: translateY(0.55em);
    filter: blur(5px);
  }
  18% {
    opacity: 1;
  }
  65% {
    filter: blur(1px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.stat-item__label {
  font-size: 0.85rem;
  color: var(--color-gray);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* --- Capability blocks --- */
.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 3em;
}

.proof-card {
  padding: 1.75em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.proof-card__value {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0.35em 0.8em;
  border: 1px solid rgba(190, 142, 102, 0.35);
  background-color: rgba(190, 142, 102, 0.08);
  color: var(--color-primary);
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.2em;
}

.proof-card__label {
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.6em;
}

.proof-card__text {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text);
}

.capability-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 2em;
}

.capability-item {
  padding: 1.25em 1.5em;
  background-color: var(--color-light);
  border-left: 3px solid var(--color-gold);
  font-size: 0.95rem;
  line-height: 1.7;
  border-radius: var(--radius-md);
}

.capability-item strong {
  display: block;
  color: var(--color-dark);
  margin-bottom: 0.35em;
}

.media-placeholder {
  min-height: 260px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #e7e4df 0%, #cfc9c1 100%);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2em;
  color: var(--color-gray);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.history-timeline {
  margin-top: 3em;
}

.history-timeline__tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.history-timeline__tab {
  position: relative;
  min-height: 88px;
  padding: 1em 1.25em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  color: var(--color-gold);
  font: 700 1rem/1.2 var(--font-serif);
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.history-timeline__tab::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -7px;
  width: 12px;
  height: 12px;
  border-right: 1px solid transparent;
  border-bottom: 1px solid transparent;
  background-color: transparent;
  transform: translateX(-50%) rotate(45deg);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.history-timeline__tab:hover,
.history-timeline__tab:focus-visible,
.history-timeline__tab.is-active {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 12px 28px rgba(182, 30, 55, 0.14);
  transform: translateY(-2px);
  outline: none;
}

.history-timeline__tab.is-active::after {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.history-timeline__panels {
  margin-top: 16px;
}

.history-timeline__panel {
  min-height: 150px;
  padding: 2em 2.25em;
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  box-shadow: 0 18px 40px rgba(45, 37, 34, 0.06);
  animation: history-panel-in 0.28s ease both;
}

.history-timeline__panel[hidden] {
  display: none;
}

.history-timeline__eyebrow {
  display: block;
  margin-bottom: 0.7em;
  color: var(--color-gold);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.history-timeline__panel h3 {
  margin: 0;
  color: var(--color-dark);
  font-size: 1.35rem;
  line-height: 1.5;
}

.history-timeline__milestones {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85em 2.5em;
  margin: 1.6em 0 0;
  padding: 1.5em 0 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
}

.history-timeline__milestones li {
  position: relative;
  padding-left: 1.35em;
  color: var(--color-dark);
  line-height: 1.65;
}

.history-timeline__milestones li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 7px;
  height: 7px;
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  background-color: var(--color-white);
}

@keyframes history-panel-in {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.production-flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 3.25em;
  padding: 0;
  min-height: 0;
  background-color: transparent;
}

.production-flow::before {
  display: none;
}

.production-flow__item {
  position: relative;
  width: auto;
  min-height: 118px;
  padding: 1.15em 1.2em;
  background-color: var(--color-white);
  border: 1px solid rgba(187, 165, 140, 0.42);
  border-radius: var(--radius-md);
  text-align: left;
  cursor: pointer;
  appearance: none;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 0 0.9em;
  align-items: center;
  overflow: hidden;
  font-family: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
  transform: none;
}

.production-flow__item::before {
  display: none;
}

.production-flow__item:hover,
.production-flow__item.is-active {
  border-color: rgba(182, 30, 55, 0.36);
  box-shadow: 0 14px 32px rgba(45, 37, 34, 0.08);
  transform: translateY(-3px);
}

.production-flow__item::after {
  display: none;
}

.production-flow__item span {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(187, 165, 140, 0.75);
  background-color: rgba(251, 248, 244, 0.95);
  color: var(--color-gold);
  font-weight: 700;
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.24rem;
  line-height: 1;
  letter-spacing: 0.02em;
  box-shadow: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.production-flow__item:hover span,
.production-flow__item.is-active span {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 14px 30px rgba(182, 30, 55, 0.16);
}

.production-flow__item strong {
  display: block;
  color: var(--color-dark);
  font-size: 0.96rem;
  line-height: 1.55;
  word-break: keep-all;
  overflow-wrap: normal;
  text-wrap: balance;
  font-weight: 600;
  max-width: none;
  margin: 0;
}

.production-flow__detail {
  position: relative;
  grid-column: 1 / -1;
  margin-top: 0.6em;
  padding: 1.55em 1.75em;
  background-color: var(--color-white);
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 0.35em 2.25em;
  border: 1px solid rgba(187, 165, 140, 0.42);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 36px rgba(45, 37, 34, 0.06);
}

.production-flow__detail span {
  grid-column: 1;
  grid-row: 1;
  display: block;
  color: var(--color-gold);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  margin-bottom: 0;
}

.production-flow__detail h3 {
  grid-column: 1;
  grid-row: 2;
  color: var(--color-dark);
  font-size: 1.45rem;
  font-weight: 600;
  margin-bottom: 0;
}

.production-flow__detail p {
  grid-column: 2;
  grid-row: 1 / span 2;
  color: var(--color-gray);
  line-height: 1.75;
  max-width: none;
  padding-top: 0.2em;
}

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  margin-top: 3em;
}

.factory-strength-image,
.factory-showcase__image {
  width: 100%;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-top: 3em;
  background-color: var(--color-light);
}

.factory-showcase {
  margin-top: 3em;
}

.factory-showcase__media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.factory-showcase__image {
  margin-top: 0;
  transition: opacity 0.28s ease;
}

.factory-showcase__image.is-switching {
  opacity: 0.4;
}

.factory-showcase__caption {
  position: absolute;
  left: 24px;
  bottom: 24px;
  max-width: min(520px, calc(100% - 48px));
  padding: 1.25em 1.5em;
  background-color: rgba(255, 255, 255, 0.92);
  border-left: 3px solid var(--color-gold);
  border-radius: var(--radius-md);
}

.factory-showcase__caption span {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.9rem;
  color: var(--color-beige);
  line-height: 1;
  margin-bottom: 0.25em;
}

.factory-showcase__caption h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.4em;
}

.factory-showcase__caption p {
  font-size: 0.92rem;
  line-height: 1.65;
}

.factory-showcase__controls {
  margin-top: 2em;
}

.testing-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.testing-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background-color: var(--color-light);
}

.partnership-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background-color: var(--color-light);
}

.testing-gallery--hero {
  gap: 22px;
}

.testing-gallery--hero img {
  aspect-ratio: 16 / 9;
  border: 1px solid var(--color-border);
}

.lab-equipment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 3em;
}

.lab-equipment-card {
  display: flex;
  align-items: center;
  gap: 1em;
  min-height: 88px;
  padding: 1.1em 1.25em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.lab-equipment-card:hover {
  border-color: rgba(182, 30, 55, 0.3);
  box-shadow: 0 14px 32px rgba(45, 37, 34, 0.08);
  transform: translateY(-3px);
}

.lab-equipment-icon {
  position: relative;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(190, 142, 102, 0.35);
  background-color: rgba(190, 142, 102, 0.08);
}

.lab-equipment-icon::before {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--color-primary);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.lab-equipment-icon--water::before { content: 'H2O'; }
.lab-equipment-icon--salt::before { content: 'NaCl'; }
.lab-equipment-icon--pull::before { content: 'N'; }
.lab-equipment-icon--zip::before { content: 'ZIP'; }
.lab-equipment-icon--rub::before { content: 'FR'; }
.lab-equipment-icon--sweat::before { content: 'pH'; }
.lab-equipment-icon--uv::before { content: 'UV'; }
.lab-equipment-icon--fatigue::before { content: '∞'; }
.lab-equipment-icon--vibration::before { content: 'Hz'; }
.lab-equipment-icon--spectrum::before { content: 'SP'; }
.lab-equipment-icon--light::before { content: 'D65'; }

.lab-equipment-card strong {
  color: var(--color-dark);
  font-size: 0.95rem;
  line-height: 1.5;
}

.equipment-card {
  padding: 1.5em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

button.equipment-card {
  width: 100%;
  min-height: 100%;
  text-align: left;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transition: var(--transition);
}

button.equipment-card:hover,
button.equipment-card.is-active {
  border-color: var(--color-gold);
  box-shadow: 0 16px 45px rgba(52, 44, 42, 0.1);
  transform: translateY(-3px);
}

button.equipment-card.is-active {
  border-top: 3px solid var(--color-primary);
}

.equipment-card__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.75em;
}

.equipment-card__text {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-text);
}

.qc-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 3em;
}

.qc-step {
  padding: 2em 1.5em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.qc-step:hover {
  border-color: rgba(182, 30, 55, 0.3);
  box-shadow: 0 14px 32px rgba(45, 37, 34, 0.08);
  transform: translateY(-3px);
}

.qc-step__code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 70px;
  height: 42px;
  padding: 0 1em;
  margin-bottom: 1em;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.qc-step__title {
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.5em;
}

.qc-step__text {
  font-size: 0.9rem;
  line-height: 1.7;
}

.contact-quicklinks {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 2.25em;
  margin-bottom: 4.5em;
  border-top: 1px solid var(--color-border);
}

.contact-quicklink {
  position: relative;
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 1em;
  align-items: baseline;
  padding: 1em 0 1em 1.6em;
  border-bottom: 1px solid var(--color-border);
}

.contact-quicklink::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1.35em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.contact-quicklink span {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.contact-quicklink a,
.contact-quicklink strong {
  color: var(--color-dark);
  font-weight: 600;
  line-height: 1.55;
}

/* --- Quality Gallery --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 3em;
}

.gallery-grid img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  clip-path: inset(0 round var(--radius-lg));
  transform: scale(1);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.gallery-grid img:hover {
  transform: scale(1.04);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

/* --- Certifications --- */
.cert-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3em;
  flex-wrap: wrap;
  margin-top: 2em;
}

.cert-badges img {
  height: 60px;
  width: auto;
  box-sizing: border-box;
  padding: 6px 12px;
  opacity: 0.8;
  transition: var(--transition);
}

.cert-badges img:hover {
  opacity: 1;
  transform: scale(1.1);
}

/* --- Vision Cards --- */
.vision-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 3em;
}

.vision-card {
  text-align: center;
  padding: 2.5em 2em;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.vision-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-3px);
}

.vision-card img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto 1.5em;
}

.vision-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.75em;
}

.vision-card__text {
  font-size: 0.9rem;
  line-height: 1.7;
}

/* --- Sustainability --- */
.sustainability-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-top: 3em;
}

.sustainability-block img {
  width: 100%;
  border-radius: var(--radius-lg);
}

.sustainability-block--reverse {
  direction: rtl;
}

.sustainability-block--reverse > * {
  direction: ltr;
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 3em;
}

.contact-info__item {
  margin-bottom: 3.25em;
  padding-left: 1.35em;
  border-left: 2px solid rgba(190, 142, 102, 0.35);
}

.contact-info__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.75em;
}

.contact-info__text {
  font-size: 0.95rem;
  line-height: 1.8;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5em;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5em;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5em;
  color: var(--color-dark);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-dark);
  background-color: var(--color-light);
  transition: var(--transition);
  outline: none;
  border-radius: var(--radius-input);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-gold);
  background-color: var(--color-white);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* --- Footer --- */
.footer {
  background-color: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 80px 0 40px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 3em;
}

.footer__brand {
  text-align: left;
}

.footer__brand img {
  display: block;
  height: 36px;
  margin-bottom: 1.5em;
  margin-left: -16px;
  filter: brightness(0) invert(1);
}

.footer__brand p {
  font-size: 0.86rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer__title {
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.9em;
  padding-bottom: 0.5em;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__links a {
  display: block;
  font-size: 0.86rem;
  margin-bottom: 0.6em;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer__links a:hover {
  color: var(--color-white);
  padding-left: 5px;
}

.footer__links p {
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.75em;
  margin-top: 0.5em;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.02em;
}

.footer__bottom p,
.footer__bottom span {
  flex: 1 1 0;
  min-width: 0;
}

  .back-to-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }

.footer__bottom .lang-switch {
  flex: 0 0 auto;
  white-space: nowrap;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.85s ease, transform 0.85s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--text {
  transform: translateY(24px);
}

.reveal--media {
  opacity: 1;
  transform: none;
  transition: none;
}

.reveal--card {
  transform: translateY(34px);
}

.reveal--group {
  transform: translateY(30px);
}

.reveal--text.reveal--visible,
.reveal--media.reveal--visible,
.reveal--card.reveal--visible,
.reveal--group.reveal--visible {
  transform: translateY(0) scale(1);
}

.content-image-frame.reveal--media.reveal--visible > img,
img.reveal--media.reveal--visible {
  animation: media-reveal 1s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes media-reveal {
  from {
    opacity: 0.35;
    filter: blur(5px) saturate(0.82);
  }
  to {
    opacity: 1;
    filter: blur(0) saturate(1);
  }
}

.reveal--delay-1 { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
.reveal--delay-4 { transition-delay: 0.4s; }
.reveal--delay-5 { transition-delay: 0.5s; }

/* --- Shared Interaction Feedback --- */
:is(
  .service-card,
  .proof-card,
  .business-hub-card,
  .application-card,
  .service-detail-card,
  .vision-card,
  .qc-step,
  .lab-equipment-card,
  .contact-quicklink,
  .contact-info__item,
  .compliance-item,
  .capability-item,
  .material-item
) {
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease, border-color 0.35s ease, background-color 0.35s ease;
}

:is(
  a,
  button,
  summary,
  input,
  select,
  textarea
):focus-visible {
  outline: 3px solid rgba(196, 18, 48, 0.28);
  outline-offset: 4px;
}

.form-group :is(input, textarea):focus-visible {
  border-color: var(--color-gold);
  outline: 2px solid rgba(183, 142, 108, 0.24);
  outline-offset: 2px;
  box-shadow: 0 0 0 1px rgba(183, 142, 108, 0.08);
}

.btn:focus-visible,
.business-subnav__link:focus-visible,
.menu-toggle:focus-visible {
  outline: 3px solid rgba(196, 18, 48, 0.38);
  outline-offset: 4px;
}

.btn--primary:focus-visible,
.btn--gold:focus-visible,
.btn--video:focus-visible {
  outline-color: rgba(255, 255, 255, 0.82);
}

.form-group :is(input, textarea):user-invalid {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(196, 18, 48, 0.1);
}

:is(
  .btn,
  .back-to-top,
  .faq-filters button,
  .history-timeline__tab,
  .process-tab,
  .factory-showcase__control,
  .production-flow__item
):active {
  transform: scale(0.97);
  transition-duration: 0.08s;
}

@media (hover: hover) and (pointer: fine) {
  :is(
    .service-card,
    .proof-card,
    .business-hub-card,
    .application-card,
    .service-detail-card,
    .vision-card,
    .qc-step,
    .lab-equipment-card,
    .contact-quicklink,
    .contact-info__item,
    .compliance-item,
    .capability-item,
    .material-item
  ).reveal--visible:hover {
    transform: translateY(-8px) scale(1);
    border-color: rgba(196, 18, 48, 0.2);
    box-shadow: 0 18px 42px rgba(52, 44, 42, 0.12);
  }

  .content-image-frame:hover > img {
    transform: scale(1.055);
    filter: saturate(1.04) contrast(1.02);
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal--text,
  .reveal--media,
  .reveal--card,
  .reveal--group,
  :is(
    .service-card,
    .proof-card,
    .business-hub-card,
    .application-card,
    .service-detail-card,
    .vision-card,
    .qc-step,
    .lab-equipment-card,
    .contact-quicklink,
    .contact-info__item,
    .compliance-item,
    .capability-item,
    .material-item
  ) {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --- Factory Gallery --- */
.factory-gallery {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 15px;
  margin-top: 3em;
}

.factory-gallery img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.factory-gallery img:hover {
  transform: scale(1.05);
}

/* --- Product Carousel (Marquee) --- */
.product-carousel {
  overflow: hidden;
  margin-top: 3em;
  border-radius: var(--radius-lg);
}

.product-carousel__track {
  display: flex;
  gap: 1em;
  width: max-content;
}

.product-carousel__track img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.product-carousel__track img[src$="carousel-product-new-09.jpg"],
.product-carousel__track img[src$="carousel-product-new-12.jpg"],
.product-carousel__track img[src$="carousel-product-black-zipper-detail.jpg"] {
  box-sizing: border-box;
  padding-inline: 14px;
  object-fit: contain;
  background: #fff;
}

/* --- Page Banner (inner pages) --- */
.page-banner {
  position: relative;
  height: 50vh;
  min-height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-attachment: scroll;
}

.page-banner::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(52, 44, 42, 0.75) 0%, rgba(139, 30, 44, 0.5) 100%);
}

.page-banner__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
}

.page-banner__title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
  margin-bottom: 0.3em;
  color: #FFFFFF;
  text-shadow: 0 2px 15px rgba(0,0,0,0.5);
}

.page-banner__subtitle {
  font-size: 1.1rem;
  color: #FFFFFF;
  text-shadow: 0 1px 10px rgba(0,0,0,0.4);
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--color-white);
}

.cta-section .heading-lg {
  color: var(--color-white);
}

.cta-section p {
  opacity: 0.9;
  margin-bottom: 2em;
}

/* --- Compliance list --- */
.compliance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 2em;
}

.compliance-item {
  display: flex;
  align-items: center;
  gap: 0.75em;
  padding: 1em 1.5em;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.compliance-item:hover {
  border-color: rgba(182, 30, 55, 0.3);
  box-shadow: 0 14px 32px rgba(45, 37, 34, 0.08);
  transform: translateY(-3px);
}

.sustainability-quote {
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  border: 1px solid transparent;
}

.sustainability-quote:hover {
  border-color: rgba(182, 30, 55, 0.2);
  box-shadow: 0 16px 38px rgba(45, 37, 34, 0.08);
  transform: translateY(-2px);
}

.compliance-item::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: 700;
}

/* ================================================
   FAQ
   ================================================ */
.faq-filters {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 3em;
  padding-bottom: 1.5em;
  border-bottom: 1px solid var(--color-border);
}

.faq-filters button {
  min-height: 42px;
  padding: 0.65em 1.1em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-dark);
  font: 500 0.9rem/1.2 inherit;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.faq-filters button:hover,
.faq-filters button:focus-visible,
.faq-filters button.is-active {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-white);
  outline: none;
}

.faq-group {
  display: block;
  padding: 0;
}

.faq-group[hidden],
.faq-item[hidden],
.faq-empty[hidden] {
  display: none;
}

.faq-item {
  border-top: 1px solid var(--color-border);
  background-color: transparent;
}

.faq-item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
  position: relative;
  padding: 1.3em 3em 1.3em 0;
  color: var(--color-dark);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.5;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before,
.faq-item summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 0.5em;
  width: 16px;
  height: 2px;
  background-color: var(--color-primary);
  transition: transform 0.2s ease;
}

.faq-item summary::after {
  transform: rotate(90deg);
}

.faq-item[open] summary::after {
  transform: rotate(0deg);
}

.faq-item summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

.faq-item > div {
  padding: 0 3em 1.5em 0;
  color: var(--color-gray);
  line-height: 1.8;
  animation: history-panel-in 0.22s ease both;
}

.faq-item a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.faq-empty {
  padding: 2em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-gray);
  text-align: center;
}

/* ================================================
   Responsive
   ================================================ */
@media screen and (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .proof-grid,
  .business-hub-grid,
  .application-grid,
  .service-detail-grid,
  .business-flow,
  .business-flow--six,
  .equipment-grid,
  .qc-flow,
  .production-flow {
    grid-template-columns: repeat(2, 1fr);
  }

  .production-flow {
    margin-top: 3em;
    padding: 0;
    min-height: 0;
  }

  .production-flow::before {
    display: none;
  }

  .production-flow__item {
    width: auto;
    top: auto;
    min-height: 112px;
    padding: 1.1em;
    text-align: left;
  }

  .production-flow__item::before {
    display: none;
  }

  .production-flow__item:nth-of-type(3n)::before {
    display: none;
  }

  .production-flow__item span {
    width: 54px;
    height: 54px;
    font-size: 1.18rem;
  }

  .production-flow__item strong {
    font-size: 0.9rem;
    max-width: none;
  }

  .production-flow__detail {
    grid-column: 1 / -1;
    margin-top: 0.6em;
  }

  .product-feature,
  .product-feature--reverse {
    grid-template-columns: 1fr;
  }

  .product-feature--reverse .product-feature__media {
    order: 0;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .sustainability-block {
    grid-template-columns: 1fr;
  }

  .vision-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media screen and (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
    --header-height: 70px;
    --font-size-body: 1rem;
    --font-size-md: 1.05rem;
  }

  .container {
    padding: 0 20px;
  }

  .manufacturing-video {
    margin-top: 2rem;
    border-radius: 4px;
  }

  /* Mobile Nav */
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background-color: var(--color-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 40px;
    gap: 1.5em;
    transition: var(--transition-slow);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
    transform: translateX(100%);
    visibility: hidden;
    overflow-y: auto;
  }

  .nav--open {
    transform: translateX(0);
    visibility: visible;
  }

  .header--scrolled .nav__link {
    color: var(--color-white);
  }

  .header--scrolled .lang-switch a {
    color: rgba(255, 255, 255, 0.7);
  }

  .nav__link {
    color: var(--color-white);
    font-size: 1rem;
  }

  .nav__item {
    width: 100%;
  }

  .nav-dropdown {
    position: static;
    min-width: 0;
    margin-top: 0.75em;
    padding: 0 0 0 1em;
    border: none;
    border-left: 1px solid rgba(255, 255, 255, 0.18);
    background-color: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-dropdown::before {
    display: none;
  }

  .nav-dropdown__link {
    color: rgba(255, 255, 255, 0.72);
    padding: 0.45em 0;
    white-space: normal;
  }

  .nav-dropdown__link:hover {
    color: var(--color-white);
    background-color: transparent;
  }

  .factory-showcase__image {
    aspect-ratio: 4 / 3;
  }

  .factory-showcase__caption {
    position: static;
    max-width: none;
    border-left: 0;
    border-top: 3px solid var(--color-gold);
    background-color: var(--color-white);
  }

  .lang-switch {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    padding-top: 2em;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
  }

  .lang-switch a {
    color: rgba(255, 255, 255, 0.7);
  }

  .menu-toggle {
    display: flex;
  }

  /* Grid adjustments */
  .services-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .sustainability-block {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .factory-gallery {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats {
    grid-template-columns: 1fr 1fr;
    gap: 1.5em;
  }

  .proof-grid,
  .business-hub-grid,
  .application-grid,
  .service-detail-grid,
  .business-flow,
  .business-flow--six,
  .equipment-grid,
  .qc-flow,
  .production-flow,
  .capability-list,
  .testing-gallery,
  .lab-equipment-grid,
  .contact-quicklinks {
    grid-template-columns: 1fr;
  }

  .history-timeline__tabs {
    gap: 8px;
  }

  .history-timeline__tab {
    min-height: 70px;
    padding: 0.8em 0.45em;
    font-size: 0.9rem;
  }

  .history-timeline__panel {
    min-height: 130px;
    padding: 1.5em;
  }

  .history-timeline__milestones {
    grid-template-columns: 1fr;
    gap: 0.75em;
  }

  .faq-filters {
    display: flex;
    flex-wrap: nowrap;
    margin-bottom: 2em;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .faq-filters button {
    flex: 0 0 auto;
  }

  .faq-item summary {
    padding-right: 2.5em;
  }

  .production-flow {
    margin-top: 3em;
    padding: 0;
    gap: 1.1em;
    display: grid;
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .production-flow::before {
    display: none;
  }

  .production-flow__item {
    position: relative;
    left: auto;
    top: auto;
    width: auto;
    min-height: auto;
    padding: 1.05em;
    text-align: left;
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 0 1em;
    align-items: center;
    justify-items: start;
    transform: none;
  }

  .production-flow__item:hover,
  .production-flow__item.is-active {
    transform: translateY(-2px);
  }

  .production-flow__item::before {
    display: none;
  }

  .production-flow__item:nth-of-type(n) {
    margin-top: 0;
  }

  .production-flow__item:nth-of-type(3n)::before {
    display: none;
  }

  .production-flow__item:nth-of-type(9)::before {
    display: none;
  }

  .production-flow__item span {
    width: 54px;
    height: 54px;
    font-size: 1.2rem;
  }

  .production-flow__item strong {
    max-width: none;
    margin: 0;
  }

  .production-flow__detail {
    grid-template-columns: 1fr;
    gap: 0.4em;
    margin-top: 1.2em;
  }

  .production-flow__detail span,
  .production-flow__detail h3,
  .production-flow__detail p {
    grid-column: 1;
    grid-row: auto;
  }

  .business-section {
    padding-top: 60px;
  }

  .process-switch {
    padding-top: 40px;
  }

  .process-switch ~ .process-panel:not([hidden]) {
    padding-top: 34px;
  }

  .business-subnav {
    justify-content: flex-start;
    margin-bottom: 3em;
  }

  .business-subnav__link {
    width: calc(50% - 5px);
    text-align: center;
  }

  .contact-quicklink {
    grid-template-columns: 1fr;
    gap: 0.35em;
  }

  .process-timeline::before {
    left: 20px;
  }

  .process-step {
    flex-wrap: wrap;
  }

  .process-step__icon {
    width: 100%;
    height: auto;
    max-width: 280px;
    order: -1;
  }

  .process-step__number {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2em;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 1em;
    text-align: center;
  }

  .footer__bottom .lang-switch {
    display: flex;
    justify-content: center;
    gap: 1em;
    flex-wrap: wrap;
  }

  .compliance-grid {
    grid-template-columns: 1fr;
  }

  .page-banner {
    background-attachment: scroll;
  }

  .hero {
    min-height: 100vh;
  }
  
  [lang="zh-Hant"] .text-quote,
  [lang="zh-Hans"] .text-quote {
    white-space: normal;
    max-width: 100%;
  }
}

@media screen and (max-width: 480px) {
  :root {
    --font-size-body: 0.96rem;
    --font-size-md: 1rem;
  }

  .materials-grid {
    gap: 1.5em;
  }

  .material-item {
    width: 100px;
  }

  .material-item img {
    width: 70px;
    height: 70px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .history-timeline__panel {
    padding: 1.25em;
  }

  .history-timeline__panel h3 {
    font-size: 1.15rem;
  }

  .factory-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}