```css
/* ==========================================================================
   [TB] CJ Building Services TEMPLATE
   Tokens: Brown (#392E26), Olive (#7C7262), Cream (#FFFCF8)
   Fonts: DM Serif Display (heading), Prompt (body)
   Signature: Asymmetric buttons, warm earthy tones
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Prompt:wght@300;400;500;600&display=swap');

/* --- Tokens --- */
:root {
  --c-brown: #392E26;
  --c-olive: #7C7262;
  --c-cream: #FFFCF8;
  --c-cream-dark: #F5F0EB;
  --c-text: #392E26;
  --c-text-muted: #7C7262;
  --c-text-light: #FFFCF8;
  --c-border: #D4CFC8;
  --c-border-light: #E8E3DC;

  --ff-display: 'DM Serif Display', Georgia, serif;
  --ff-body: 'Prompt', sans-serif;

  --fs-display-xl: clamp(48px, 8vw, 96px);
  --fs-display-lg: clamp(36px, 6vw, 72px);
  --fs-display-md: clamp(28px, 4vw, 48px);
  --fs-display-sm: clamp(22px, 3vw, 32px);
  --fs-body: 18px;
  --fs-body-sm: 15px;
  --fs-label: 13px;
  --fs-nav: 15px;

  --lh-heading: 1.1;
  --lh-body: 1.7;
  --ls-label: 0.06em;

  --space-section: clamp(80px, 10vw, 140px);
  --space-container: clamp(20px, 4vw, 48px);
  --container-max: 1200px;
  --gap: 24px;
  --header-h: 80px;

  --radius: 3px;
  --radius-btn: 10px 0px 10px 10px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.4s;
  --dur-slow: 0.8s;
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  font-weight: 300;
  line-height: var(--lh-body);
  color: var(--c-text);
  background: var(--c-cream);
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select {
  font: inherit; color: inherit; border: none; background: none; outline: none;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-container);
}
.label {
  font-family: var(--ff-body);
  font-size: var(--fs-label);
  font-weight: 400;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-text-muted);
}
.section-pad { padding: var(--space-section) 0; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); border: 0;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--ff-body);
  font-size: var(--fs-body-sm);
  font-weight: 400;
  background: var(--c-olive);
  color: var(--c-text-light);
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: background var(--dur) var(--ease), transform 0.2s;
}
.btn:hover { background: var(--c-brown); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--c-brown);
  border: 1px solid var(--c-brown);
}
.btn-outline:hover { background: var(--c-brown); color: var(--c-text-light); }
.btn-light {
  background: var(--c-cream);
  color: var(--c-brown);
}
.btn-light:hover { background: var(--c-text-light); }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-container);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header.scrolled {
  background: var(--c-cream);
  box-shadow: 0 1px 0 var(--c-border-light);
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-logo-text {
  font-family: var(--ff-display);
  font-size: 22px;
  color: var(--c-text-light);
  transition: color var(--dur) var(--ease);
}
.site-header.scrolled .header-logo-text { color: var(--c-brown); }

.header-right {
  display: flex;
  align-items: center;
  gap: 32px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.header-nav a {
  font-size: var(--fs-nav);
  font-weight: 400;
  color: rgba(255, 252, 248, 0.7);
  transition: color var(--dur) var(--ease);
}
.header-nav a:hover,
.header-nav a.active { color: var(--c-text-light); }
.site-header.scrolled .header-nav a { color: var(--c-text-muted); }
.site-header.scrolled .header-nav a:hover,
.site-header.scrolled .header-nav a.active { color: var(--c-brown); }
.header-cta {
  padding: 10px 20px;
  font-size: 14px;
}
.header-cta.btn { background: rgba(255,252,248,0.15); color: var(--c-text-light); border-radius: var(--radius-btn); }
.header-cta.btn:hover { background: var(--c-cream); color: var(--c-brown); }
.site-header.scrolled .header-cta.btn { background: var(--c-olive); color: var(--c-text-light); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 8px;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--c-text-light);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), background 0.3s;
  border-radius: 1px;
}
.site-header.scrolled .hamburger span { background: var(--c-brown); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.hamburger.open span { background: var(--c-text-light) !important; }

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--c-brown);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 var(--space-container);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}
.mobile-nav.open { opacity: 1; pointer-events: auto; }
.mobile-nav a {
  font-family: var(--ff-display);
  font-size: clamp(32px, 7vw, 48px);
  color: var(--c-text-light);
  display: block;
  padding: 12px 0;
  opacity: 0;
  transform: translateY(16px);
  transition: transform 0.5s var(--ease-out), opacity 0.5s var(--ease-out);
}
.mobile-nav.open a { opacity: 1; transform: translateY(0); }
.mobile-nav.open a:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav.open a:nth-child(2) { transition-delay: 0.15s; }
.mobile-nav.open a:nth-child(3) { transition-delay: 0.2s; }
.mobile-nav.open a:nth-child(4) { transition-delay: 0.25s; }
.mobile-nav.open a:nth-child(5) { transition-delay: 0.3s; }
.mobile-nav.open a:nth-child(6) { transition-delay: 0.35s; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  background: var(--c-brown);
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.3;
}
.hero-content {
  position: relative;
  z-index: 10;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: calc(var(--header-h) + 40px) var(--space-container) 60px;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}
.hero-badge-est {
  font-family: var(--ff-body);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 252, 248, 0.5);
}
.hero-badge-year {
  font-family: var(--ff-display);
  font-size: 20px;
  color: var(--c-cream);
}
.hero h1 {
  font-family: var(--ff-display);
  font-size: var(--fs-display-xl);
  font-weight: 400;
  line-height: var(--lh-heading);
  color: var(--c-text-light);
  max-width: 700px;
  margin-bottom: 24px;
}
.hero p {
  font-size: var(--fs-body);
  color: rgba(255, 252, 248, 0.75);
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   SERVICES PREVIEW (Homepage)
   ========================================================================== */
.services-section {
  background: var(--c-cream);
  padding: var(--space-section) 0;
}
.services-header {
  max-width: var(--container-max);
  margin: 0 auto 60px;
  padding: 0 var(--space-container);
}
.services-header .label { margin-bottom: 12px; }
.services-header h2 {
  font-family: var(--ff-display);
  font-size: var(--fs-display-md);
  font-weight: 400;
  line-height: var(--lh-heading);
  max-width: 500px;
}
.services-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-container);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.service-card {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  cursor: pointer;
}
.service-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}
.service-card:hover img { transform: scale(1.06); }
.service-card-content {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(57, 46, 38, 0.9) 0%, rgba(57, 46, 38, 0.1) 50%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  transition: background var(--dur) var(--ease);
}
.service-card:hover .service-card-content {
  background: linear-gradient(to top, rgba(57, 46, 38, 0.95) 0%, rgba(57, 46, 38, 0.4) 100%);
}
.service-card-number {
  font-family: var(--ff-display);
  font-size: 48px;
  color: rgba(255, 252, 248, 0.15);
  position: absolute;
  top: 24px; left: 32px;
}
.service-card h3 {
  font-family: var(--ff-display);
  font-size: 26px;
  font-weight: 400;
  color: var(--c-text-light);
  margin-bottom: 8px;
}
.service-card p {
  font-size: var(--fs-body-sm);
  color: rgba(255, 252, 248, 0.65);
  line-height: 1.6;
}
.service-card .card-link {
  margin-top: 16px;
  font-size: var(--fs-label);
  font-weight: 400;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--c-cream);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s, transform 0.3s var(--ease);
}
.service-card:hover .card-link { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   ABOUT PREVIEW (Homepage)
   ========================================================================== */
.about-preview {
  background: var(--c-cream-dark);
  padding: var(--space-section) 0;
}
.about-preview-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-container);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-preview-text .label { margin-bottom: 12px; }
.about-preview-text h2 {
  font-family: var(--ff-display);
  font-size: var(--fs-display-md);
  font-weight: 400;
  line-height: var(--lh-heading);
}
.about-preview-text p { margin-bottom: 20px; }
.about-preview-image img { border-radius: var(--radius); }

/* ==========================================================================
   WHY US
   ========================================================================== */
.why-section {
  background: var(--c-cream);
  padding: var(--space-section) 0;
}
.why-header {
  max-width: var(--container-max);
  margin: 0 auto 60px;
  padding: 0 var(--space-container);
  text-align: center;
}
.why-header .label { margin-bottom: 12px; display: block; }
.why-header h2 {
  font-family: var(--ff-display);
  font-size: var(--fs-display-md);
  font-weight: 400;
  line-height: var(--lh-heading);
  margin: 0 auto;
}
.why-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-container);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.why-card {
  background: var(--c-cream-dark);
  padding: 32px;
  border-radius: var(--radius);
}
.why-card h3 {
  font-family: var(--ff-display);
  font-size: var(--fs-display-sm);
  font-weight: 400;
  line-height: var(--lh-heading);
  margin-bottom: 12px;
}

/* ==========================================================================
   PRODUCTS / SHOWROOM
   ========================================================================== */
.products-section {
  background: var(--c-cream-dark);
  padding: var(--space-section) 0;
}
.products-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-container);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.products-text .label { margin-bottom: 12px; }
.products-text h2 {
  font-family: var(--ff-display);
  font-size: var(--fs-display-md);
  font-weight: 400;
  line-height: var(--lh-heading);
  margin-bottom: 24px;
}
.products-text p { margin-bottom: 32px; }
.showroom-card {
  background: var(--c-cream);
  padding: 24px;
  border-radius: var(--radius);
  margin-top: 32px;
}
.showroom-card h4 {
  font-family: var(--ff-display);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: var(--lh-heading);
  margin-bottom: 8px;
}
.products-image img { border-radius: var(--radius); }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-section {
  background: var(--c-cream);
  padding: var(--space-section) 0;
}
.faq-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-container);
}
.faq-header { margin-bottom: 48px; }
.faq-header .label { margin-bottom: 12px; }
.faq-header h2 {
  font-family: var(--ff-display);
  font-size: var(--fs-display-md);
  font-weight: 400;
  line-height: var(--lh-heading);
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--c-cream-dark);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq-question {
  position: relative;
  width: 100%;
  padding: 20px 24px;
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}
.faq-question::after {
  content: '+';
  position: absolute;
  top: 50%; right: 24px;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--c-text-muted);
}
.faq-question[aria-expanded="true"]::after { content: '−'; }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}
.faq-answer p { padding: 20px 0; }
.faq-item[data-open="true"] .faq-answer {
  max-height: 400px; /* Adjust as needed */
  padding: 0 24px 20px;
}

/* ==========================================================================
   TESTIMONIALS
   ========================================================================== */
.testimonials-section {
  background: var(--c-cream-dark);
}
.testimonials-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-container);
  position: relative;
}
.testimonials-inner .label {
  text-align: center;
  display: block;
}
.testimonial-card {
  background: var(--c-cream);
  padding: 40px