/* ===========================
   GLOBAL RESET & VARIABLES
   =========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-dark:     #f4f8fc;
  --bg-card:     #ffffff;
  --bg-card2:    #eef4fb;
  --border:      rgba(14, 165, 233, 0.22);
  --border-glow: rgba(14, 165, 233, 0.45);
  --cyan:        #0ea5e9;
  --indigo:      #6366f1;
  --cyan-dim:    #0284c7;
  --text-primary:   #0f1e33;
  --text-secondary: #475569;
  --text-muted:     #8595a8;
  --gradient-main: linear-gradient(135deg, #0ea5e9, #6366f1);
  --gradient-card: linear-gradient(135deg, #ffffff 0%, #eef4fb 100%);
  --glass-bg:    rgba(255, 255, 255, 0.72);
  --glass-border: rgba(14, 165, 233, 0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-glow: 0 10px 30px rgba(15, 30, 51, 0.08);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-cn: 'Noto Sans TC', sans-serif;
  --font-en: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-cn);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

/* 全頁浮水印背景（自動裁捲機照片，淡化處理） */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: url('images/real_watermark.jpg') center center / cover no-repeat;
  opacity: 0.09;
  z-index: -1;
  pointer-events: none;
}

img { display: block; width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===========================
   NAVBAR
   =========================== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 4px 24px rgba(15,30,51,0.10);
}

.nav-container {
  width: 100%; max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo { display: flex; align-items: center; gap: 12px; cursor: pointer; }
.logo-zh { display: flex; align-items: center; gap: 12px; }
.logo-en { display: none; align-items: center; }
html[lang="en"] .logo-zh { display: none !important; }
html[lang="en"] .logo-en { display: flex !important; }
.logo-icon { flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-main {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-primary);
  -webkit-text-fill-color: var(--text-primary);
}
.logo-sub { font-size: 13px; color: var(--text-secondary); font-weight: 400; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px; height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
  transition: transform var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: rgba(56,189,248,0.06); }
.nav-links a:hover::after { transform: translateX(-50%) scaleX(1); }

.nav-right { display: flex; align-items: center; gap: 12px; }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border);
  color: var(--cyan);
  font-size: 15px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-en);
}
.lang-toggle:hover {
  background: rgba(56,189,248,0.16);
  border-color: var(--border-glow);
  box-shadow: 0 0 12px rgba(56,189,248,0.2);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===========================
   HERO
   =========================== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 120px 40px 180px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(244,248,252,0.90) 0%,
    rgba(244,248,252,0.72) 50%,
    rgba(244,248,252,0.88) 100%
  );
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridMove 20s linear infinite;
}
@keyframes gridMove {
  0% { transform: translateY(0); }
  100% { transform: translateY(60px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  animation: heroFadeUp 1s ease both;
}
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border-glow);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 15px;
  color: var(--cyan);
  margin-bottom: 24px;
  font-family: var(--font-en);
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(37px, 5vw, 74px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #0f1e33 0%, #0284c7 55%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(17px, 2vw, 22px);
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-weight: 300;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.hero-tagline {
  font-size: 17px;
  color: var(--cyan);
  font-style: italic;
  margin-bottom: 40px;
  font-family: var(--font-en);
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-main);
  color: #fff;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 17px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(56,189,248,0.3);
  font-family: var(--font-cn);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(56,189,248,0.45);
  filter: brightness(1.1);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 17px;
  border: 1px solid var(--border-glow);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-outline:hover {
  background: rgba(56,189,248,0.08);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.hero-stats {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 20px 40px;
  animation: heroFadeUp 1.2s ease 0.3s both;
  white-space: nowrap;
}
.stat-item { text-align: center; padding: 0 24px; }
.stat-num {
  display: block;
  font-size: 32px;
  font-weight: 800;
  font-family: var(--font-en);
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 14px; color: var(--text-secondary); }
.stat-divider {
  width: 1px; height: 40px;
  background: var(--border);
}

.hero-scroll {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  animation: bounce 2s ease-in-out infinite;
}
.scroll-line {
  width: 1px; height: 30px;
  background: linear-gradient(to bottom, var(--cyan), transparent);
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===========================
   SECTIONS COMMON
   =========================== */
section { position: relative; }
#about    { padding: 100px 40px; background: var(--bg-dark); }
#products { padding: 100px 40px; background: var(--bg-card); }
#contact  { padding: 100px 40px; background: var(--bg-dark); }

.section-container {
  max-width: 1280px;
  margin: 0 auto;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
  font-family: var(--font-en);
}
.section-label.light { color: var(--cyan); }
.label-line {
  display: block;
  width: 40px; height: 2px;
  background: var(--gradient-main);
  border-radius: 2px;
}
.label-line.light { background: var(--gradient-main); }

.section-title {
  font-size: clamp(30px, 3.5vw, 51px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.section-title.light { color: var(--text-primary); }
.section-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 56px;
}

/* ===========================
   ABOUT
   =========================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 17px;
  line-height: 1.8;
}
.about-intro {
  font-size: 20px !important;
  color: var(--text-primary) !important;
  font-weight: 500;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}
.value-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.value-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}
.value-icon { font-size: 25px; flex-shrink: 0; }
.value-card strong { display: block; font-size: 16px; color: var(--text-primary); margin-bottom: 4px; }
.value-card p { font-size: 15px; color: var(--text-secondary); margin: 0; }

.about-visual { position: relative; }
.about-img-wrapper {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.about-img { height: 360px; object-fit: cover; }
.img-glow {
  position: absolute;
  inset: -1px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}
.about-img-wrapper:hover .img-glow { opacity: 0.3; }

.tech-badge-wrap {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}
.tech-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  flex: 1;
  transition: all var(--transition);
}
.tech-badge:hover { border-color: var(--border-glow); }
.tb-icon { font-size: 28px; }
.tech-badge strong { display: block; font-size: 15px; color: var(--text-primary); }
.tech-badge span { font-size: 14px; color: var(--text-secondary); }

/* ===========================
   PRODUCTS
   =========================== */
.product-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.tab-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 500;
  padding: 14px 24px;
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-cn);
}
.tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-glow);
}
.tab-btn.active {
  background: linear-gradient(135deg, rgba(56,189,248,0.15), rgba(99,102,241,0.15));
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 20px rgba(56,189,248,0.15);
}
.tab-icon { font-size: 21px; }

.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.product-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.showcase-img {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 4/3;
}
.showcase-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.showcase-img:hover img { transform: scale(1.04); }
.showcase-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,30,51,0.22) 0%, transparent 60%);
  pointer-events: none;
}

.showcase-info h3 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 16px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.showcase-info > p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}

/* Digital product cats */
.product-cats { display: flex; flex-direction: column; gap: 16px; }
.prod-cat {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  transition: border-color var(--transition);
}
.prod-cat:hover { border-color: var(--border-glow); }
.cat-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}
.cat-dot.dye     { background: #38bdf8; box-shadow: 0 0 8px #38bdf8; }
.cat-dot.pigment { background: #6366f1; box-shadow: 0 0 8px #6366f1; }
.cat-dot.solvent { background: #a855f7; box-shadow: 0 0 8px #a855f7; }
.prod-cat strong { font-size: 15px; color: var(--text-primary); display: block; margin-bottom: 6px; }
.prod-cat li { font-size: 14px; color: var(--text-secondary); padding: 2px 0; padding-left: 12px; position: relative; }
.prod-cat li::before { content: '·'; position: absolute; left: 0; color: var(--cyan); }

/* PSA grid */
.psa-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.psa-card {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px;
  transition: all var(--transition);
}
.psa-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}
.psa-icon { font-size: 28px; margin-bottom: 8px; }
.psa-card h4 { font-size: 15px; color: var(--cyan); margin-bottom: 6px; }
.psa-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* Car wrap */
.car-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 20px;
}
.car-feat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--text-secondary);
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
}
.car-series {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.series-tag {
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border-glow);
  color: var(--cyan);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 100px;
  transition: all var(--transition);
}
.series-tag:hover {
  background: rgba(56,189,248,0.18);
  box-shadow: 0 0 12px rgba(56,189,248,0.2);
}

/* ===========================
   FACTORY
   =========================== */
#factory {
  position: relative;
  padding: 100px 40px;
  overflow: hidden;
}
.factory-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.factory-bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
}
.factory-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(244,248,252,0.93) 0%,
    rgba(244,248,252,0.82) 100%
  );
}
.factory-content { position: relative; z-index: 2; }

.factory-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.factory-card {
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.factory-card.glass {
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(14,165,233,0.18);
  box-shadow: 0 10px 30px rgba(15,30,51,0.06);
}
.factory-card:hover {
  border-color: rgba(56,189,248,0.35);
  box-shadow: 0 8px 40px rgba(56,189,248,0.12);
  transform: translateY(-4px);
}
.fc-icon { font-size: 37px; margin-bottom: 14px; }
.factory-card h3 {
  font-size: 20px;
  color: var(--cyan);
  margin-bottom: 10px;
  font-weight: 600;
}
.factory-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===========================
   CONTACT
   =========================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.info-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition);
}
.info-block:hover { border-color: var(--border-glow); }
.info-block h3 { font-size: 18px; margin-bottom: 18px; color: var(--cyan); }
.info-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 15px;
  color: var(--text-secondary);
}
.info-label {
  flex-shrink: 0;
  width: 52px;
  font-weight: 600;
  color: var(--text-muted);
  font-family: var(--font-en);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-top: 1px;
}
.info-row a { color: var(--cyan); transition: color var(--transition); }
.info-row a:hover { color: #7dd3fc; }

/* FORM */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.form-group label {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
}
.form-group input:not([type="checkbox"]),
.form-group select,
.form-group textarea {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 16px;
  padding: 12px 16px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: var(--font-cn);
  width: 100%;
}
.form-group input:not([type="checkbox"]):focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(56,189,248,0.12);
}
.form-group select option { background: var(--bg-card); }
.form-group textarea { resize: vertical; }

.form-row {
  display: flex;
  gap: 14px;
}
.form-row .form-group { flex: 1; margin-bottom: 0; }
.form-row .form-group.flex2 { flex: 2; }
.form-row { margin-bottom: 18px; }

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 4px;
}
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--text-secondary);
  cursor: pointer;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  transition: all var(--transition);
}
.checkbox-item:hover { border-color: var(--border-glow); color: var(--text-primary); }
.checkbox-item input { accent-color: var(--cyan); }

.form-submit {
  width: 100%;
  justify-content: center;
  margin-top: 8px;
  border: none;
  font-size: 17px;
}
.btn-arrow { font-size: 21px; }

.form-success {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 16px;
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  font-size: 16px;
  color: var(--cyan);
}

/* ===========================
   FOOTER
   =========================== */
footer {
  background: #e8eff7;
  border-top: 1px solid var(--border);
  padding: 60px 40px 0;
}
.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand p { font-size: 16px; color: var(--text-muted); margin-top: 12px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
}
.footer-links h4, .footer-contact h4 {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-family: var(--font-en);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 16px;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--cyan); }
.footer-contact p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-muted);
}

/* ===========================
   BACK TO TOP
   =========================== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  width: 44px; height: 44px;
  background: var(--gradient-main);
  color: #fff;
  font-size: 21px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(56,189,248,0.35);
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover { transform: translateY(-3px); }

/* ===========================
   PHOTO GALLERY
   =========================== */
#showcase {
  padding: 100px 0;
  position: relative;
}
.gallery-title {
  font-size: 23px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 40px 0 20px;
}
.photo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.photo-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(15,30,51,0.06);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  background: var(--bg-card);
}
.photo-gallery img:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 14px 34px rgba(15,30,51,0.14);
  border-color: var(--border-glow);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
  .about-grid, .product-showcase, .contact-grid {
    grid-template-columns: 1fr;
  }
  .factory-cards { grid-template-columns: repeat(2, 1fr); }
  .footer-container { grid-template-columns: 1fr 1fr; }
  .hero-stats { padding: 16px 24px; }
  .stat-item { padding: 0 16px; }
  .photo-gallery { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
}

@media (max-width: 768px) {
  #navbar { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  .hamburger { display: flex; }
  #about, #products, #contact, #factory { padding: 72px 20px; }
  #hero { padding: 100px 20px 200px; }
  .hero-stats {
    flex-direction: column;
    gap: 12px;
    bottom: 20px;
    padding: 20px;
    width: calc(100% - 40px);
    left: 20px;
    transform: none;
  }
  .stat-divider { width: 100%; height: 1px; }
  .factory-cards { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .psa-grid { grid-template-columns: 1fr; }
  .car-features { grid-template-columns: 1fr; }
  .form-row { flex-direction: column; }
  .contact-form { padding: 24px; }
}