/* ============================================
   A Star MARBLES — Component Styles
   ============================================ */

/* === HOME: Hero === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #111110;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(125deg, rgba(240,235,220,0.08) 0%, transparent 40%),
    linear-gradient(to bottom, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.55) 100%),
    linear-gradient(155deg, #1a1916 0%, #0f0f0e 40%, #161512 100%);
}
.hero-marble-overlay {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background:
    repeating-linear-gradient(
      62deg,
      transparent 0px,
      transparent 60px,
      rgba(255,255,255,0.6) 60px,
      rgba(255,255,255,0.6) 61px,
      transparent 61px,
      transparent 140px
    ),
    repeating-linear-gradient(
      -30deg,
      transparent 0px,
      transparent 80px,
      rgba(255,255,255,0.4) 80px,
      rgba(255,255,255,0.4) 81px,
      transparent 81px,
      transparent 180px
    );
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--accent);
}
.hero h1 {
  color: var(--white);
  font-weight: 300;
  font-style: italic;
  margin-bottom: 12px;
  line-height: 1.1;
}
.hero h1 em {
  font-style: normal;
  font-weight: 500;
  color: var(--accent-light);
}
.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 44px;
  max-width: 520px;
  font-weight: 300;
  line-height: 1.65;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.4; }
}

/* === HOME: Stats Bar === */
.stats-bar {
  background: var(--bg-dark);
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat-item {
  text-align: center;
  padding: 20px 24px;
  border-right: 1px solid rgba(255,255,255,0.07);
}
.stat-item:last-child { border-right: none; }
.stat-number {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}

/* === HOME: Featured Products === */
.products-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.product-card-image {
  aspect-ratio: 4/3;
  position: relative;
  overflow: hidden;
}
.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.product-card:hover .product-card-image img { transform: scale(1.05); }
.product-card-img-placeholder {
  width: 100%;
  height: 100%;
  position: relative;
}
.product-card-img-placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(200,195,185,0.3) 0%, transparent 50%),
              linear-gradient(225deg, rgba(190,185,175,0.25) 0%, transparent 40%);
}
.marble-p1 {
  background:
    repeating-linear-gradient(55deg, transparent 0, transparent 30px,
      rgba(210,205,195,0.35) 30px, rgba(210,205,195,0.35) 31px),
    linear-gradient(135deg, #f8f6f2 0%, #ece9e3 40%, #f5f3ee 100%);
}
.marble-p2 {
  background:
    repeating-linear-gradient(130deg, transparent 0, transparent 45px,
      rgba(200,196,188,0.3) 45px, rgba(200,196,188,0.3) 46px),
    linear-gradient(160deg, #f4f2ee 0%, #e9e6df 50%, #f0ede7 100%);
}
.marble-p3 {
  background:
    repeating-linear-gradient(20deg, transparent 0, transparent 55px,
      rgba(215,210,200,0.28) 55px, rgba(215,210,200,0.28) 56px),
    linear-gradient(110deg, #f6f4f0 0%, #eae7e0 45%, #f2efe9 100%);
}
.marble-p4 {
  background:
    repeating-linear-gradient(75deg, transparent 0, transparent 40px,
      rgba(205,200,190,0.32) 40px, rgba(205,200,190,0.32) 41px),
    linear-gradient(150deg, #f9f7f3 0%, #ede9e2 40%, #f7f5f1 100%);
}
.marble-p5 {
  background:
    repeating-linear-gradient(160deg, transparent 0, transparent 50px,
      rgba(220,215,205,0.3) 50px, rgba(220,215,205,0.3) 51px),
    linear-gradient(90deg, #f5f3ef 0%, #ebe8e1 50%, #f3f1ed 100%);
}
.marble-p6 {
  background:
    repeating-linear-gradient(40deg, transparent 0, transparent 35px,
      rgba(208,203,193,0.33) 35px, rgba(208,203,193,0.33) 36px),
    linear-gradient(175deg, #f7f5f1 0%, #ecead5 40%, #f5f2ec 100%);
}

.product-card-body { padding: 24px; }
.product-card-origin {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.product-card h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
  color: var(--text);
}
.product-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}
.product-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: 100px;
  border: 1px solid var(--border);
}
.product-card-link {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}
.product-card-link:hover { gap: 12px; }

/* === HOME: Why A Star === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.feature-card {
  padding: 36px 28px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  transition: var(--transition);
}
.feature-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(184,146,42,0.12), rgba(184,146,42,0.06));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
}
.feature-card h4 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 12px;
  color: var(--text);
}
.feature-card p { font-size: 0.88rem; line-height: 1.7; }

/* === HOME: Process === */
.process-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
}
.process-strip::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 12.5%;
  right: 12.5%;
  height: 1px;
  background: var(--accent);
  opacity: 0.3;
}
.process-step { text-align: center; padding: 0 20px; }
.process-number {
  width: 72px;
  height: 72px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--accent);
  background: var(--bg-dark);
  position: relative;
  z-index: 1;
}
.process-step h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: 8px;
}
.process-step p { font-size: 0.85rem; color: rgba(255,255,255,0.5); }

/* === HOME: Applications === */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.app-card {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  cursor: pointer;
}
.app-card-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}
.app-card:hover .app-card-bg { transform: scale(1.06); }
.app-residential { background: linear-gradient(160deg, #e8e4dc 0%, #d4cfc5 100%); }
.app-commercial  { background: linear-gradient(160deg, #dedad1 0%, #ccc7bc 100%); }
.app-hospitality { background: linear-gradient(160deg, #e4e0d8 0%, #d0ccc4 100%); }
.app-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
}
.app-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px 28px;
  z-index: 2;
  color: var(--white);
}
.app-card-content .eyebrow {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 8px;
  display: block;
}
.app-card-content h3 {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--white);
}

/* === HOME: CTA Banner === */
.cta-banner {
  background: var(--bg-dark);
  border: 1px solid rgba(184,146,42,0.2);
  border-radius: var(--radius-lg);
  padding: 72px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(184,146,42,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-banner h2 { color: var(--white); margin-bottom: 16px; }
.cta-banner p { color: rgba(255,255,255,0.55); font-size: 1.05rem; margin-bottom: 36px; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-banner-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* === PRODUCTS PAGE === */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-bar-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-right: 8px;
}
.filter-btn {
  padding: 8px 20px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  border-radius: 100px;
  transition: var(--transition);
  background: transparent;
}
.filter-btn:hover,
.filter-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(184,146,42,0.06);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-full-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.product-full-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-full-card[data-hidden="true"] { display: none; }
.product-full-image {
  aspect-ratio: 5/4;
  position: relative;
  overflow: hidden;
}
.product-full-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.product-full-image .product-card-img-placeholder { height: 100%; }
.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg-dark);
  color: var(--accent);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
}
.product-full-body { padding: 28px; }
.product-full-body .product-card-origin { margin-bottom: 6px; }
.product-full-body h3 { font-size: 1.5rem; margin-bottom: 10px; }
.product-full-body p { font-size: 0.87rem; margin-bottom: 18px; }

.product-specs {
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin-bottom: 20px;
}
.spec-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  padding: 5px 0;
  border-bottom: 1px solid var(--border-light);
}
.spec-row:last-child { border-bottom: none; }
.spec-label { color: var(--text-muted); font-weight: 500; }
.spec-value { color: var(--text); font-weight: 600; }

/* === ABOUT PAGE === */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-story-image {
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}
.about-story-image .marble-bg-2 { width: 100%; height: 100%; }
.about-story-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(184,146,42,0.15);
  border-radius: var(--radius-lg);
}
.about-story-content .eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
}
.about-story-content h2 { margin-bottom: 20px; }
.about-story-content p { margin-bottom: 16px; font-size: 0.98rem; }

.vietnam-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.vietnam-image {
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  order: 2;
}
.vietnam-image .marble-bg-3 { width: 100%; height: 100%; }
.vietnam-content { order: 1; }
.vietnam-content .eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
}
.vietnam-content h2 { margin-bottom: 20px; }
.vietnam-content p { margin-bottom: 14px; font-size: 0.98rem; }
.vietnam-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}
.vietnam-fact {
  padding: 16px 18px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
}
.vietnam-fact strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 4px;
}
.vietnam-fact span { font-size: 0.8rem; color: var(--text-muted); }

.process-detailed {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}
.process-detailed::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  opacity: 0.3;
}
.process-detailed-step { text-align: center; }
.process-detailed-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--white);
  border: 1.5px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.3rem;
  position: relative;
  z-index: 1;
}
.process-detailed-step h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--text);
}
.process-detailed-step p { font-size: 0.78rem; color: var(--text-muted); }

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.value-card {
  padding: 60px 40px;
  text-align: center;
  background: var(--bg-dark);
  color: var(--white);
}
.value-card:nth-child(2) { background: var(--accent); }
.value-icon { font-size: 2.5rem; margin-bottom: 20px; display: block; }
.value-card h3 { color: var(--white); margin-bottom: 12px; }
.value-card p { color: rgba(255,255,255,0.65); font-size: 0.9rem; }
.value-card:nth-child(2) p { color: rgba(255,255,255,0.8); }

/* === ABOUT: Company Stats Bar === */
.about-stats-bar {
  background: var(--bg-dark);
  padding: 56px 0;
}
.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.about-stat-number {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 10px;
}
.about-stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}
@media (max-width: 768px) {
  .about-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}

/* === ABOUT: Leadership Team === */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.team-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.team-card-photo {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.team-photo-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #e8e4dc 0%, #d4cfc4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(90,80,60,0.5);
}
.team-card-body {
  padding: 24px;
}
.team-card-body h4 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.team-role {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.team-quals {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.team-card-body p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}
@media (max-width: 900px) {
  .team-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .team-grid { grid-template-columns: 1fr; }
}

/* === ABOUT: India Infrastructure === */
.infra-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.infra-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow 0.3s ease;
}
.infra-card:hover { box-shadow: var(--shadow); }
.infra-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
  display: block;
}
.infra-card h4 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.infra-location {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px !important;
}
.infra-card p {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.6;
}
@media (max-width: 1024px) {
  .infra-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .infra-grid { grid-template-columns: 1fr; }
}

/* === CONTACT PAGE === */
.contact-grid {
  display: grid;
  grid-template-columns: 5fr 4fr;
  gap: 64px;
  align-items: start;
}
.contact-form-wrap h2 { margin-bottom: 8px; }
.contact-form-wrap > p { margin-bottom: 36px; font-size: 0.98rem; }

.form-group { margin-bottom: 20px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--text);
  transition: var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(184,146,42,0.1);
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-light); }
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B6860' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.form-textarea { min-height: 120px; resize: vertical; }
.form-submit {
  width: 100%;
  padding: 16px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--white);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}
.form-submit:hover {
  background: var(--accent-dark);
  box-shadow: 0 8px 24px rgba(184,146,42,0.35);
}

.contact-info { padding-top: 8px; }
.contact-info h3 { margin-bottom: 8px; }
.contact-info > p { font-size: 0.92rem; margin-bottom: 32px; }
.contact-detail {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
}
.contact-detail:last-of-type { border-bottom: none; }
.contact-detail-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: rgba(184,146,42,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.contact-detail-text strong {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.contact-detail-text span, .contact-detail-text a {
  font-size: 0.95rem;
  color: var(--text);
}
.contact-detail-text a:hover { color: var(--accent); }

.response-promise {
  margin-top: 28px;
  padding: 20px;
  background: rgba(184,146,42,0.07);
  border: 1px solid rgba(184,146,42,0.2);
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.response-promise strong { color: var(--accent); }

/* === Responsive === */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .products-preview-grid { grid-template-columns: repeat(2, 1fr); }
  .about-story { gap: 48px; }
  .vietnam-section { gap: 48px; }
  .process-detailed { grid-template-columns: repeat(3, 1fr); }
  .process-detailed::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 768px) {
  .hero-content { max-width: 100%; }
  .hero-scroll { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .products-preview-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .process-strip { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .process-strip::before { display: none; }
  .applications-grid { grid-template-columns: 1fr; }
  .app-card { aspect-ratio: 16/9; }
  .cta-banner { padding: 48px 28px; }
  .products-grid { grid-template-columns: 1fr; }
  .about-story { grid-template-columns: 1fr; }
  .about-story-image { aspect-ratio: 16/9; order: -1; }
  .vietnam-section { grid-template-columns: 1fr; }
  .vietnam-image { order: -1; aspect-ratio: 16/9; }
  .process-detailed { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: 1fr; gap: 2px; }
  .form-row { grid-template-columns: 1fr; }
  .vietnam-facts { grid-template-columns: 1fr; }
}