@import url('https://unpkg.com/aos@2.3.4/dist/aos.css');

/* ============================================
   HENGSHENG MARBLE S&T - Premium Corporate Style
   Bilingual TC+EN | Luxury Minimalist Design
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {

  /* Design System: Deep Charcoal + Champagne Gold */
  --color-primary: #1A1A2E;
  --color-secondary: #2C2C3E;
  --color-accent: #D4AF37;
  --color-accent-dark: #B8860B;
  --color-accent-light: #E8C84A;
  --color-white: #ffffff;
  --color-off-white: #F5F0EB;
  --color-cream: #FAF8F5;
  --color-light-gray: #E8E4DF;
  --color-mid-gray: #888;
  --color-dark-gray: #444;
  /* Typography */
  --font-heading: 'Playfair Display', 'Noto Serif TC', serif;
  --font-body: 'Inter', 'Noto Sans TC', -apple-system, sans-serif;
  /* Motion */
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-card: 0 4px 16px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 12px 32px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  /* Layout */
  --max-width: 1280px;
  --nav-height: 80px;
  /* Mobile interaction enhancements */
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--color-primary);
  background: #F5F0EB;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: 700; line-height: 1.3; }

/* ---------- Utility ---------- */
.container { width: 90%; max-width: var(--max-width); margin: 0 auto; }
.section-padding { padding: 40px 0; }

/* Inner page text background for readability */
.inner-page .section-padding {
  background: #F5F0EB;
}
.inner-page .section-padding .container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}
.inner-page .section-padding h2,
.inner-page .section-padding h3 {
  color: var(--color-primary);
}
.inner-page .section-padding p {
  color: #333;
}
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-accent { color: var(--color-accent); }
.bg-off-white { background: var(--color-off-white); }
.bg-dark { background: #F5F0EB; color: var(--color-primary); }

/* ---------- Typography ---------- */
h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.01em; margin-bottom: 1rem; }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }
p { font-size: 1rem; color: var(--color-dark-gray); line-height: 1.8; }
.section-subtitle {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: block;
}
.section-title { margin-bottom: 1.5rem; }
.section-desc { max-width: 600px; margin: 0 auto 3rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}
.btn-white {
  background: #F5F0EB;
  color: var(--color-primary);
}
.btn-white:hover {
  background: var(--color-off-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  z-index: 1000;
  transition: var(--transition);
  background: #F5F0EB;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}

.navbar.scrolled {
  background: #F5F0EB;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-primary);
  flex-shrink: 0;
}
.nav-logo img {
  height: 42px;
  width: auto;
  border-radius: 6px;
  flex-shrink: 0;
}
.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
  overflow: visible;
  white-space: nowrap;
}
.nav-logo-text strong {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 700;
  color: #1A1A2E;
  letter-spacing: 0.5px;
}
.nav-logo-text small {
  font-size: 0.62rem;
  color: rgba(26,26,46,0.9),0.85);
  font-weight: 500;
  letter-spacing: 0.3px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-shrink: 1;
  min-width: 0;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #1A1A2E;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after,
.nav-dropdown > a.active::after { width: 100%; }
.nav-links a:hover { color: var(--color-accent); }

/* ---------- Mega Menu ---------- */
.nav-dropdown { position: relative; }
.nav-dropdown > a::after {
  content: '\25BE';
  font-size: 0.6em;
  margin-left: 4px;
  vertical-align: middle;
  display: inline-block;
  bottom: auto;
  width: auto;
  height: auto;
  background: none;
  transition: transform 0.3s ease;
}
.nav-dropdown:hover > a::after { transform: rotate(180deg); }
.nav-dropdown:hover > a::after { width: 100%; }
.nav-dropdown > a { display: flex; align-items: center; gap: 2px; }

/* Mega Panel */
.mega-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 680px;
  background: #F5F0EB;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 32px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  pointer-events: none;
  border: 1px solid rgba(0,0,0,0.04);
  z-index: 1000;
}
.nav-dropdown:hover .mega-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto; /* 父元素 hover 时面板可交互 */
}
.mega-panel:hover {
  pointer-events: auto !important; /* 鼠标在面板上时保持可交互 */
}
.mega-panel-link {
  pointer-events: auto !important; /* 链接始终可点击 */
}
.mega-panel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.mega-panel-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
  text-decoration: none;
  color: var(--color-primary) !important;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}
.mega-panel-link::after { display: none !important; }
.mega-panel-link:hover {
  background: var(--color-off-white);
  color: var(--color-accent-dark) !important;
}
.mega-panel-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: flex-start;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.mega-panel-text { display: flex; flex-direction: column; gap: 2px; }
.mega-panel-text strong { font-size: 0.85rem; color: var(--color-primary); }
.mega-panel-text span { font-size: 0.72rem; color: var(--color-mid-gray); }
.mega-panel-link:hover .mega-panel-text strong { color: var(--color-accent-dark); }
.mega-panel-viewall {
  grid-column: 1 / -1;
  text-align: center;
  padding-top: 16px;
  margin-top: 8px;
  border-top: 1px solid var(--color-light-gray);
}
.mega-panel-viewall a {
  color: var(--color-accent-dark) !important;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.mega-panel-viewall a::after { display: none !important; }
.mega-panel-viewall a:hover { color: var(--color-accent) !important; }

/* Projects Dropdown */
.dropdown-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 260px;
  background: #F5F0EB;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  pointer-events: none;
  border: 1px solid rgba(0,0,0,0.04);
}
.nav-dropdown:hover .dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.dropdown-link {
  display: block;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  color: var(--color-primary) !important;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  transition: background 0.2s ease;
}
.dropdown-link::after { display: none !important; }
.dropdown-link:hover {
  background: var(--color-off-white);
  color: var(--color-accent-dark) !important;
}

/* Language Switcher */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 12px;
  padding-left: 16px;
  border-left: 1px solid rgba(255,255,255,0.2);
}
.lang-switch a {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  color: rgba(26,26,46,0.9),0.6) !important;
}
.lang-switch a::after { display: none !important; }
.lang-switch a.active {
  color: var(--color-accent) !important;
  background: rgba(184,134,11,0.1);
}
.lang-switch a:hover { color: var(--color-accent) !important; }
.lang-divider {
  color: rgba(26,26,46,0.9),0.3);
  font-size: 0.75rem;
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
  padding: 8px;
}
.nav-toggle span {
  width: 26px; height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
  border-radius: 2px;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 1000px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  overflow: hidden;
  background: linear-gradient(135deg, #F5F0EB 0%, #E8E4DF 50%, #D4CFC8 100%);
}
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image:
    repeating-linear-gradient(45deg, transparent, transparent 40px, rgba(212,175,55,0.05) 40px, rgba(212,175,55,0.05) 41px),
    repeating-linear-gradient(-45deg, transparent, transparent 40px, rgba(212,175,55,0.03) 40px, rgba(212,175,55,0.03) 41px);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, transparent 0%, rgba(0,0,0,0.05) 100%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  color: var(--color-primary);
  z-index: 2;
  text-align: center;
  padding: 0 20px;
  max-width: 1200px;
}
.hero-badge { color: var(--color-primary);
  display: inline-block;
  padding: 8px 24px;
  border: 1px solid rgba(184,134,11,0.4);
  border-radius: 30px;
  color: var(--color-accent-light);
  font-size: 0.8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 30px;
  backdrop-filter: blur(10px);
}
.hero h1 {
  color: var(--color-primary);
  margin-bottom: 10px;
}
.hero h1 span { color: var(--color-accent-light); }
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: rgba(26,26,46,0.9),0.7);
  margin-bottom: 40px;
  font-weight: 300;
  letter-spacing: 1px;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; max-width: 100%; }
.hero-buttons .btn { padding: 12px 28px; font-size: 0.9rem; }
@media (max-width: 480px) { .hero-buttons { flex-direction: column; align-items: center; width: 100%; } .hero-buttons .btn { width: 100%; justify-content: center; } }
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  animation: bounce 2s infinite;
}
.scroll-indicator span {
  display: block;
  width: 24px; height: 38px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 12px;
  position: relative;
}
.scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--color-accent);
  border-radius: 2px;
  animation: scroll-dot 2s infinite;
}

/* ============================================
   Hero Video Background
   ============================================ */
.hero-video-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

/* Mobile: hide video, use gradient fallback */
@media (max-width: 768px) {
  .has-video .hero-video-bg {
    display: none;
  }
  .hero {
    background: linear-gradient(135deg, #F5F0EB 0%, #E8E4DF 50%, #D4CFC8 100%) !important;
  }
}

/* ============================================
   Hero Video Grid (2x2 四宫格布局)
   ============================================ */
.hero-grid-video {
  min-height: auto;
  padding: 60px 0 40px;
  background: linear-gradient(135deg, #F5F0EB 0%, #E8E4DF 50%, #D4CFC8 100%);
}
.hero-grid-video .container {
  max-width: 1200px;
  margin: 0 auto;
}

/* 四宫格容器 */
.hero-video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 48px;
  width: 100%;
}

/* 单个视频格子 */
.hero-grid-item {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: #1a1a1e;
  box-shadow: 0 4px 24px rgba(0,0,0,0.1);
}

.hero-grid-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 视频标签 */
.hero-grid-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 10px 16px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 1px;
  text-align: left;
  z-index: 2;
}

/* 文字内容区 - 居中 */
.hero-grid-video .hero-content {
  position: relative;
  color: var(--color-primary);
  z-index: 2;
  text-align: center;
  padding: 0 20px;
  max-width: 700px;
  margin: 0 auto;
}

/* 平板适配 */
@media (max-width: 900px) {
  .hero-grid-video {
    padding: 40px 0 30px;
  }
  .hero-video-grid {
    gap: 12px;
    margin-bottom: 36px;
  }
  .hero-grid-label {
    font-size: 0.72rem;
    padding: 8px 12px;
  }
}

/* 手机适配 - 保持2列2行 */
@media (max-width: 600px) {
  .hero-grid-video {
    padding: 24px 0 16px;
  }
  .hero-video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 20px;
  }
  .hero-grid-item {
    border-radius: 8px;
  }
  .hero-grid-label {
    font-size: 0.65rem;
    padding: 6px 8px;
    letter-spacing: 0.5px;
  }
  .hero-grid-video .hero-content {
    padding: 0 12px;
  }
  .hero-grid-video h1 {
    font-size: 1.6rem !important;
  }
  .hero-grid-video .hero-content p {
    font-size: 0.85rem;
  }
}

/* ============================================
   CTA Button Animations
   ============================================ */
.btn {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(212,175,55,0.15);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.btn:hover::after,
.btn:focus::after {
  transform: scaleX(1);
}
.btn:active {
  transform: scale(0.97);
  transition: transform 0.1s ease;
}

/* ============================================
   Card Hover Effects
   ============================================ */
.stone-card,
.featured-project-card,
.news-card,
.certificate-card,
.trust-item,
.stat-item {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  -webkit-tap-highlight-color: transparent;
}
.stone-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}
.stone-card:active,
.featured-project-card:active,
.news-card:active {
  transform: translateY(-2px) scale(0.99);
  transition: transform 0.1s ease;
}

/* ============================================
   Scroll Indicator Animation
   ============================================ */
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.4); opacity: 0; }
}
@keyframes scroll-dot { 0%{opacity:1;top:6px} 100%{opacity:0;top:18px} }

/* ---------- About Preview (Home) ---------- */
.about-preview { position: relative; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-accent-warm, linear-gradient(135deg, #d4c4a8 0%, #a89068 50%, #8b7355 100%));
}
.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(184,134,11,0.15), transparent);
  pointer-events: none;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.stat-item { text-align: center; }
.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--color-accent);
  font-weight: 700;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--color-mid-gray);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

/* ---------- Product Categories (Home) ---------- */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.category-card { position: relative; border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 4/3;
  cursor: pointer;
  group: true;
}
.category-card-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}
.category-card:hover .category-card-bg { transform: scale(1.08); }
.category-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(26,26,46,0.25) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
}
.category-card h3 {
  color: #1A1A2E !important;
  font-size: 1.3rem;
  margin-bottom: 6px;
}
.category-card p {
  color: rgba(26,26,46,0.75);
  font-size: 0.85rem;
}
.category-card-icon {
  position: absolute;
  top: 20px; right: 20px;
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  font-size: 1.2rem;
}

/* ---------- Projects Preview (Home) ---------- */
.projects-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.project-card-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}
.project-card:hover .project-card-bg { transform: scale(1.06); }
.project-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(26,26,46,0.3) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}
.project-card:hover .project-card-overlay { opacity: 1; }
.project-card-overlay h4 { color: #1A1A2E !important; margin-bottom: 4px; }
.project-card-overlay p { color: rgba(26,26,46,0.75); font-size: 0.82rem; }

/* ---------- CTA Section ---------- */
.cta-section {
  background: #F5F0EB;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23D4AF37' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section .hero-buttons { justify-content: center; }
.cta-section h2 { color: var(--color-primary); margin-bottom: 16px; }
.cta-section p { color: rgba(26,26,46,0.7); max-width: 550px; margin: 0 auto 32px; }

/* ---------- Advantages / Features ---------- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.advantage-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius-md);
  background: #F5F0EB;
  border: 1px solid var(--color-light-gray);
  transition: var(--transition);
}
.advantage-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.advantage-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(184,134,11,0.1), rgba(184,134,11,0.05));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  font-size: 1.6rem;
}
.advantage-card h4 { margin-bottom: 10px; color: var(--color-primary); }
.advantage-card p { font-size: 0.88rem; color: var(--color-mid-gray); }

/* ---------- Products Page ---------- */
.products-filter {
  display: flex;
  justify-content: flex-start;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 10px 28px;
  border: 1.5px solid var(--color-light-gray);
  background: transparent;
  border-radius: 30px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  color: var(--color-dark-gray);
}
.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: #1A1A2E !important;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #F5F0EB;
  border: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow-card);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}
.product-card-image {
  aspect-ratio: 4/3;
  position: relative;
  overflow: hidden;
  background: var(--color-off-white);
}
.product-card-image .bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s ease;
}
.product-card:hover .product-card-image .bg { transform: scale(1.08); }
.product-card-zoom {
  position: absolute;
  top: 12px; right: 12px;
  width: 32px; height: 32px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: flex-start;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.3s, transform 0.3s;
  font-size: 0.9rem;
  pointer-events: none;
}
.product-card:hover .product-card-zoom { opacity: 1; transform: scale(1); }
.product-card-info { padding: 16px 18px; }
.product-card-info h4 { font-size: 1rem; margin-bottom: 6px; }
.product-card-info p { font-size: 0.83rem; color: var(--color-mid-gray); }

/* ---------- Projects Page ---------- */
.projects-filter {
  display: flex;
  justify-content: flex-start;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.projects-masonry {
  columns: 3;
  column-gap: 24px;
}
.masonry-item {
  break-inside: avoid;
  margin-bottom: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  position: relative;
}
.masonry-item .masonry-img {
  aspect-ratio: 4/3;
  position: relative;
  overflow: hidden;
}
.masonry-item.tall .masonry-img { aspect-ratio: 3/4; }
.masonry-item .masonry-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.5s ease;
}
.masonry-item:hover .masonry-bg { transform: scale(1.05); }
.masonry-item .masonry-info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 24px;
  background: linear-gradient(transparent, rgba(245,240,235,0.85));
  color: #1A1A2E;
}
.masonry-item .masonry-info h4 { color: #1A1A2E !important; margin-bottom: 4px; }
.masonry-item .masonry-info p { color: rgba(26,26,46,0.75); font-size: 0.82rem; }
.masonry-tags {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.masonry-tag {
  font-size: 0.72rem;
  padding: 3px 10px;
  background: rgba(26,26,46,0.08);
  border-radius: 12px;
  color: #1A1A2E;
}

/* ---------- News Page ---------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.news-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #F5F0EB;
  border: 1px solid var(--color-light-gray);
  transition: var(--transition);
  cursor: pointer;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.news-card-image {
  aspect-ratio: 16/9;
  position: relative;
  overflow: hidden;
}
.news-card-image .bg {
  position: absolute;
  inset: 0;
  transition: transform 0.5s ease;
}
.news-card:hover .news-card-image .bg { transform: scale(1.04); }
.news-card-info { padding: 28px; }
.news-date {
  font-size: 0.78rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.news-category {
  display: inline-block;
  font-size: 0.72rem;
  padding: 3px 12px;
  background: rgba(184,134,11,0.1);
  color: var(--color-accent);
  border-radius: 12px;
  margin-bottom: 12px;
  font-weight: 600;
}
.news-card-info h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  line-height: 1.4;
}
.news-card-info p { font-size: 0.9rem; }

/* ---------- Contact Page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.contact-form { padding-right: 20px; }
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-primary);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid var(--color-light-gray);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
  background: #F5F0EB;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(184,134,11,0.1);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.contact-info-list { padding: 0; }
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}
.contact-info-icon {
  width: 48px; height: 48px;
  min-width: 48px;
  background: linear-gradient(135deg, rgba(184,134,11,0.1), rgba(184,134,11,0.05));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  font-size: 1.2rem;
}
.contact-info-item h4 { font-size: 1rem; margin-bottom: 4px; }
.contact-info-item p { font-size: 0.9rem; color: var(--color-mid-gray); }
.map-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #e8e4df, #d4cfc8);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  color: var(--color-mid-gray);
  font-size: 0.9rem;
  margin-top: 32px;
}

/* ---------- Timeline (About page) ---------- */
.timeline { position: relative; padding: 40px 0; }
.timeline::before {
  content: '';
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 2px;
  background: var(--color-light-gray);
  transform: translateX(-50%);
}
.timeline-item {
  display: flex;
  margin-bottom: 48px;
  position: relative;
}
.timeline-item:nth-child(even) { flex-direction: row-reverse; }
.timeline-content {
  width: calc(50% - 40px);
  padding: 28px;
  background: #F5F0EB;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-light-gray);
  box-shadow: var(--shadow-sm);
}
.timeline-year {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 8px;
}
.timeline-dot {
  position: absolute;
  left: 50%; top: 32px;
  transform: translateX(-50%);
  width: 16px; height: 16px;
  background: var(--color-accent);
  border: 3px solid var(--color-white);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(184,134,11,0.2);
}

/* ---------- Footer ---------- */

/* ---------- Page Header (Inner pages) ---------- */
.page-header { padding: 0;
  background: #F5F0EB;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23D4AF37' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
}
.page-header .container { position: relative; z-index: 2; }
.page-header h1 { color: #1A1A2E !important; margin-bottom: 4px; }
.page-header p { color: rgba(26,26,46,0.7); font-size: 1.05rem; }
.breadcrumb {
  display: flex;
  justify-content: flex-start;
  gap: 8px;
  margin-top: 4px;
  font-size: 0.85rem;
  color: rgba(26,26,46,0.5);
}
.breadcrumb a { color: rgba(26,26,46,0.65); }
.breadcrumb a:hover { color: var(--color-accent-light); }
.breadcrumb span { color: rgba(26,26,46,0.4); }

/* ---------- Partners/Certifications ---------- */
.partners-strip {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 40px 0;
}
.partner-logo {
  width: 120px; height: 50px;
  background: rgba(0,0,0,0.06);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  color: var(--color-mid-gray);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
}


/* ---------- Certificates Grid (2-column) ---------- */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.certificate-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: #F5F0EB;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border: 1px solid rgba(0,0,0,0.04);
}
.cert-badge {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #C9A227 100%);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  color: #1A1A2E !important;
  text-align: center;
}
.cert-badge h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
}
.cert-badge p {
  font-size: 0.65rem;
  margin: 4px 0 0;
  opacity: 0.9;
  line-height: 1.3;
}
.cert-info {
  flex: 1;
  text-align: left;
}
.cert-info h5 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0 0 6px;
  line-height: 1.4;
}
.cert-info p {
  font-size: 0.85rem;
  color: var(--color-mid-gray);
  margin: 0;
  line-height: 1.6;
}


/* P2: 客户Logo墙 - 方块卡片式 */
.client-logos-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  max-width: 1000px;
  margin: 0 auto;
}

.client-logo-item {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 24px 16px;
  background: #F5F0EB;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border: 1px solid rgba(0,0,0,0.04);
  min-height: 80px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.client-logo-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.client-logo-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  line-height: 1.4;
}

@media (max-width: 768px) {
  .client-logos-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .client-logo-item {
    padding: 20px 12px;
    min-height: 60px;
  }

  .client-logo-text {
    font-size: 0.85rem;
  }
}

/* ---------- Modal (Product Detail) ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: flex-start;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.modal-overlay.active { display: flex; opacity: 1; }
.modal {
  background: #F5F0EB;
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  background: var(--color-light-gray);
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  z-index: 10;
  transition: var(--transition);
}
.modal-close:hover { background: var(--color-dark-gray); color: #1A1A2E !important; }
.modal-image {
  aspect-ratio: 16/10;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.modal-body { padding: 32px; }
.modal-body h2 { margin-bottom: 12px; }
.modal-body p { margin-bottom: 16px; }

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .categories-grid { grid-template-columns: repeat(3, 1fr); }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-masonry { columns: 2; }
  .timeline::before { left: 20px; }
  .timeline-item:nth-child(even) { flex-direction: row; }
  .timeline-content { width: calc(100% - 50px); margin-left: 50px; }
  .timeline-dot { left: 20px; }
  .mega-panel { min-width: 520px; padding: 24px; }
  .mega-panel-grid { grid-template-columns: repeat(2, 1fr); }
  /* Tablet: smaller nav text to fit */
  .nav-links a { font-size: 0.82rem; padding: 0 10px; }
  .nav-logo-text strong { font-size: 0.85rem; }
  .nav-logo-text small { font-size: 0.6rem; }
  .nav-logo img { height: 34px !important; }
}
/* ---------- Tablet Navigation (≤900px) ---------- */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 300px; height: 1000px;
    background: #F5F0EB;
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 24px 32px;
    gap: 0;
    transition: right 0.4s ease;
    z-index: 999;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    pointer-events: none;
  }
  .nav-links.open { right: 0; pointer-events: auto; }
  .nav-links a {
    color: var(--color-primary) !important;
    padding: 14px 0;
    font-size: 1rem;
    border-bottom: 1px solid rgba(26,26,46,0.08);
    width: 100%;
  }
  .nav-links a::after { display: none !important; }
  .nav-links a:hover { color: var(--color-accent) !important; }
  .mega-panel, .dropdown-panel {
    display: none;
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background: rgba(0,0,0,0.02);
    padding: 0 0 0 16px;
    margin: 0;
    min-width: 0;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .nav-dropdown.mobile-open .mega-panel,
  .nav-dropdown.mobile-open .dropdown-panel {
    display: block;
    /* Remove max-height limit — let content grow naturally with overflow-y: auto */
    max-height: none;
    padding: 8px 0 8px 16px;
  }
  .nav-dropdown > a::after {
    display: inline-block !important;
    transition: transform 0.3s ease;
  }
  .nav-dropdown.mobile-open > a::after {
    transform: rotate(180deg) !important;
  }
  .mega-panel-grid { grid-template-columns: 1fr; gap: 0; }
  .mega-panel-link { padding: 10px 0; border-bottom: 1px solid rgba(0,0,0,0.06); }
  .mega-panel-icon { width: 36px; height: 36px; }
  .mega-panel-icon img { width: 36px; height: 36px; }
  .mega-panel-text span { font-size: 0.7rem; }
  .mega-panel-viewall { padding: 12px 0 4px; }
  .mega-panel-viewall a { color: var(--color-accent) !important; }
  .dropdown-item { padding: 10px 0; border-bottom: 1px solid rgba(0,0,0,0.06); color: rgba(26,26,46,0.88) !important; }
  .lang-switch {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    margin-left: 0;
    margin-top: 16px;
  }
  .lang-divider { color: rgba(26,26,46,0.3); }
  .lang-switch a { color: rgba(26,26,46,0.6) !important; }
}

@media (max-width: 768px) {
  :root { --nav-height: 70px; }
  .section-padding { padding: 30px 0; }
  .nav-logo-text strong { font-size: 0.78rem; }
  .nav-logo-text small { font-size: 0.55rem; }
  .nav-logo img { height: 32px !important; }
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px; height: 1000px;
    background: #F5F0EB;
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 24px 32px;
    gap: 0;
    transition: right 0.4s ease;
    z-index: 999;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    pointer-events: none;
  }
  .nav-links.open { right: 0; pointer-events: auto; }
  .nav-links a {
    color: var(--color-primary) !important;
    padding: 14px 0;
    font-size: 1rem;
    border-bottom: 1px solid rgba(26,26,46,0.08);
    width: 100%;
  }
  .nav-links a::after { display: none !important; }
  .nav-links a:hover { color: var(--color-accent) !important; }
  /* Mobile: dropdown panels hidden by default, shown when .mobile-open */
  .mega-panel, .dropdown-panel {
    display: none;
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background: rgba(0,0,0,0.02);
    padding: 0 0 0 16px;
    margin: 0;
    min-width: 0;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .nav-dropdown.mobile-open .mega-panel,
  .nav-dropdown.mobile-open .dropdown-panel {
    display: block;
    max-height: none;
    padding: 8px 0 8px 16px;
  }
  .nav-dropdown > a::after {
    display: inline-block !important;
    transition: transform 0.3s ease;
  }
  .nav-dropdown.mobile-open > a::after {
    transform: rotate(180deg) !important;
  }
  .mega-panel-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .mega-panel-link {
    padding: 10px 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
  }
  .mega-panel-icon { width: 36px; height: 36px; }
  .mega-panel-icon img { width: 36px; height: 36px; }
  .mega-panel-text span { font-size: 0.7rem; }
  .mega-panel-viewall { padding: 12px 0 4px; }
  .mega-panel-viewall a { color: var(--color-accent) !important; }
  .dropdown-item {
    padding: 10px 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    color: rgba(26,26,46,0.88) !important;
  }
  .lang-switch {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    margin-left: 0;
    margin-top: 16px;
  }
  .lang-divider { color: rgba(26,26,46,0.3); }
  .lang-switch a { color: rgba(26,26,46,0.6) !important; }
  .nav-toggle { display: flex; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .projects-preview-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .advantages-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-form { padding-right: 0; }
  .news-grid { grid-template-columns: 1fr; }
  .projects-masonry { columns: 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .about-stats { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .stat-number { font-size: 1.8rem; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero h1 { font-size: 2.2rem; }
  .partners-strip { gap: 24px; }
  .partner-logo { width: 90px; height: 40px; }
  .timeline-content { margin-left: 50px; width: calc(100% - 50px); }
}
@media (max-width: 480px) {
  .categories-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr; }
  .btn { padding: 12px 28px; font-size: 0.82rem; }
  .nav-logo-text { display: none; }
  .whatsapp-float { bottom: 16px; right: 16px; width: 50px; height: 50px; }
  .whatsapp-float svg { width: 24px; height: 24px; }
  /* 小屏手机：下拉菜单增大高度限制，确保产品中心/工程案例全部显示 */
  .nav-links { height: 100vh; overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .nav-dropdown.mobile-open .mega-panel,
  .nav-dropdown.mobile-open .dropdown-panel { max-height: none; }
}

/* ---------- Product Gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}
.gallery-item {
  position: relative;
  aspect-ratio: 16/10;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-light-gray);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.gallery-item:hover img {
  transform: scale(1.05);
}
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26,26,46,0.25);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.gallery-item:hover .gallery-overlay {
  opacity: 1;
}
.gallery-icon {
  font-size: 1.5rem;
  color: #1A1A2E !important;
}
@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}

/* ---------- Image Modal ---------- */
.image-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
}
.image-modal.active { display: flex; }
.image-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.9);
}
.image-modal-content {
  position: relative;
  width: 100vw;
  height: 1000px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2001;
}
.image-modal-content img {
  max-width: 100vw;
  max-height: 1000px;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 0;
}
.image-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(0,0,0,0.5);
  border: none;
  color: #1A1A2E !important;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  z-index: 2002;
}


/* Image Modal Mobile Optimization */
@media (max-width: 768px) {
  .image-modal-content {
    width: 100vw;
    height: 100dvh;
  }
  .image-modal-content img {
    max-width: 100vw;
    max-height: 90dvh;
  }
  .image-modal-close {
    top: 12px;
    right: 12px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    padding: 0;
  }
  .image-modal-prev,
  .image-modal-next {
    top: auto !important;
    bottom: 24px !important;
    width: 56px !important;
    height: 56px !important;
    font-size: 1.4rem !important;
  }
  .image-modal-prev { left: 24px !important; right: auto !important; }
  .image-modal-next { right: 24px !important; left: auto !important; }
}

/* Ensure prev/next buttons always have proper z-index */
.image-modal-prev,
.image-modal-next {
  z-index: 2003 !important;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.image-modal-prev:hover { transform: translateY(-50%) scale(1.1); }
.image-modal-next:hover { transform: translateY(-50%) scale(1.1); }

/* ---------- Trust Bar ---------- */
.trust-bar {
  background: #F5F0EB;
  padding: 0;
  position: relative;
}
.trust-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(184,134,11,0.1) 0%, transparent 50%, rgba(184,134,11,0.1) 100%);
}
.trust-items {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(212,175,55,0.15);
}
.trust-item {
  text-align: center;
  padding: 32px 20px;
  background: #E8E4DF;
  position: relative;
}
.trust-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-accent-light);
  line-height: 1;
  margin-bottom: 8px;
}
.trust-label {
  display: block;
  font-size: 0.8rem;
  color: rgba(26,26,46,0.55);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}
@media (max-width: 768px) {
  .trust-items { grid-template-columns: repeat(2, 1fr); }
  .trust-number { font-size: 1.8rem; }
  .trust-item { padding: 24px 16px; }
}

/* ---------- Application Scenarios ---------- */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.scenario-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.scenario-card-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease, filter 0.6s ease;
}
.scenario-card:hover .scenario-card-bg {
  transform: scale(1.08);
  filter: brightness(1.1);
}
.scenario-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(26,26,46,0.3) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  transition: background 0.4s ease;
  pointer-events: none;
}
.scenario-card:hover .scenario-card-overlay {
  background: linear-gradient(180deg, rgba(26,26,46,0.1) 0%, rgba(26,26,46,0.35) 100%);
}
.scenario-card h3 {
  color: #1A1A2E !important;
  font-size: 1.6rem;
  margin-bottom: 6px;
  transform: translateY(8px);
  transition: transform 0.3s ease;
}
.scenario-card:hover h3 {
  transform: translateY(0);
}
.scenario-card p {
  color: var(--color-accent-light);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 1px;
}
@media (max-width: 768px) {
  .scenarios-grid { grid-template-columns: 1fr; gap: 16px; }
  .scenario-card { aspect-ratio: 16/10; }
}

/* ---------- Featured Projects Grid (6 items) ---------- */
.featured-projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.featured-project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}
.featured-project-card .card-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}
.featured-project-card:hover .card-bg {
  transform: scale(1.06);
}
.featured-project-card .card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(26,26,46,0.3));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  opacity: 0.9;
  transition: opacity 0.3s ease;
}
.featured-project-card:hover .card-overlay {
  opacity: 1;
}
.featured-project-card h4 {
  color: #1A1A2E !important;
  font-size: 1.1rem;
  margin-bottom: 6px;
  font-family: var(--font-heading);
}
.featured-project-card .card-desc {
  color: rgba(26,26,46,0.75);
  font-size: 0.85rem;
  margin-bottom: 10px;
}
.project-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.project-tag {
  font-size: 0.72rem;
  padding: 4px 10px;
  background: rgba(184,134,11,0.8);
  color: #1A1A2E !important;
  border-radius: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
@media (max-width: 1024px) {
  .featured-projects-grid { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .featured-projects-grid { grid-template-columns: 1fr; grid-template-rows: repeat(6, 1fr); gap: 16px; }
}

/* ---------- Product Category Cards ---------- */
.product-cat-section {
  padding: 0 0;
  position: relative;
}
.product-cat-section:nth-child(even) {
  background: var(--color-off-white);
}
.product-cat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.product-cat-grid.reverse {
  direction: rtl;
}
.product-cat-grid.reverse > * {
  direction: ltr;
}
.product-cat-image {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.product-cat-image img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-md);
  transition: transform 0.4s ease;
}
.product-cat-image img:hover {
  transform: scale(1.03);
}
.product-cat-image img {
  cursor: zoom-in;
}
.stone-card-img {
  cursor: zoom-in;
}
.product-cat-image img:first-child {
  grid-column: span 2;
  aspect-ratio: 16/9;
}
.product-cat-content h3 {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--color-primary);
}
.product-cat-content h3 span {
  color: var(--color-accent);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-body);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.product-cat-content p {
  font-size: 1rem;
  line-height: 1.9;
  margin-bottom: 16px;
}
.product-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.product-feature {
  font-size: 0.8rem;
  padding: 6px 14px;
  background: rgba(184,134,11,0.1);
  color: var(--color-accent);
  border-radius: 20px;
  font-weight: 500;
}
@media (max-width: 768px) {
  .product-cat-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-cat-grid.reverse { direction: ltr; }
  .product-cat-content h3 { font-size: 1.6rem; }
}

/* ---------- Why Choose Section ---------- */
.why-choose-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.why-card {
  text-align: center;
  padding: 40px 28px;
  background: #F5F0EB;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-light-gray);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.why-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.why-card:hover::before {
  transform: scaleX(1);
}
.why-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.why-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(184,134,11,0.15), rgba(184,134,11,0.05));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  font-size: 2rem;
}
.why-card h4 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}
.why-card p {
  font-size: 0.88rem;
  color: var(--color-mid-gray);
  line-height: 1.7;
}
@media (max-width: 1024px) {
  .why-choose-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .why-choose-grid { grid-template-columns: 1fr; gap: 20px; }
  .why-card { padding: 32px 24px; }
}

/* ---------- Counter Animation ---------- */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.trust-number.animated {
  animation: countUp 0.6s ease forwards;
}

/* ---------- WhatsApp Float Button ---------- */
/* ---------- Mobile Nav Overlay ---------- */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.nav-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  z-index: 1000;
  transition: transform 0.2s, box-shadow 0.2s;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}
.whatsapp-float svg {
  width: 28px;
  height: 28px;
}

/* ---------- Contact Page (No Form) ---------- */
.contact-single {
  max-width: 800px;
  margin: 0 auto;
}
.contact-info-card {
  text-align: center;
}
.contact-info-card .contact-info-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}
.contact-info-card .contact-info-item {
  background: var(--color-light);
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-align: left;
}
.contact-info-card .contact-visual {
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.contact-info-card .contact-visual img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

/* ====== Contact Page 7-Module Sections ====== */
.contact-section { margin-bottom: 64px; }
.contact-section:last-child { margin-bottom: 0; }
.contact-section-header { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 28px; }
.contact-section-icon { width: 48px; height: 48px; background: var(--color-accent); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: flex-start; font-size: 22px; flex-shrink: 0; color: #1A1A2E !important; }
.contact-section-title-group {}
.contact-section-num { font-size: 0.75rem; font-family: var(--font-body); color: var(--color-accent); font-weight: 600; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 4px; }
.contact-section-title { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700; color: var(--color-primary); line-height: 1.3; }
.contact-core-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.contact-core-card { background: var(--color-off-white); border: 1px solid var(--color-light-gray); border-radius: var(--radius-md); padding: 24px; display: flex; gap: 16px; align-items: flex-start; }
.contact-core-card-icon { width: 40px; height: 40px; background: var(--color-accent); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: flex-start; font-size: 18px; flex-shrink: 0; color: #1A1A2E !important; }
.contact-core-card-content {}
.contact-core-card-label { font-size: 0.8rem; color: var(--color-accent); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; }
.contact-core-card-value { font-size: 1rem; font-weight: 600; color: var(--color-primary); line-height: 1.5; }
.contact-core-card-value a { color: var(--color-primary); }
.contact-core-card-value a:hover { color: var(--color-accent); }
.contact-complaint-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.contact-complaint-card { background: var(--color-off-white); border: 1px solid var(--color-light-gray); border-radius: var(--radius-md); padding: 24px; }
.contact-complaint-card h4 { font-family: var(--font-heading); font-size: 1.1rem; margin-bottom: 8px; color: var(--color-primary); }
.contact-complaint-card p { font-size: 0.88rem; color: var(--color-mid-gray); line-height: 1.6; }
.contact-philosophy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
@media (max-width: 768px) { .contact-philosophy-grid { grid-template-columns: 1fr; } }
.contact-philosophy-block { background: var(--color-off-white); border-radius: var(--radius-lg); padding: 32px; }
.contact-philosophy-block h4 { font-family: var(--font-heading); font-size: 1.1rem; color: var(--color-primary); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.contact-philosophy-block p { font-size: 0.95rem; color: var(--color-dark-gray); line-height: 1.8; }
.contact-commitments { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin-top: 20px; }
.contact-commitment-item { display: flex; gap: 14px; align-items: flex-start; padding: 16px; background: #fff; border: 1px solid var(--color-light-gray); border-radius: var(--radius-md); }
.contact-commitment-num { width: 32px; height: 32px; background: var(--color-accent); color: #1A1A2E !important; border-radius: 50%; display: flex; align-items: center; justify-content: flex-start; font-size: 0.85rem; font-weight: 700; flex-shrink: 0; }
.contact-commitment-text { font-size: 0.88rem; color: var(--color-dark-gray); line-height: 1.5; }
.contact-visit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 768px) { .contact-visit-grid { grid-template-columns: 1fr; } }
.contact-visit-info { background: var(--color-off-white); border-radius: var(--radius-lg); padding: 28px; }
.contact-visit-info h4 { font-family: var(--font-heading); font-size: 1.1rem; margin-bottom: 16px; color: var(--color-primary); }
.contact-visit-item { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; font-size: 0.9rem; color: var(--color-dark-gray); line-height: 1.5; }
.contact-visit-item strong { color: var(--color-primary); min-width: 80px; flex-shrink: 0; }
.contact-visit-note { margin-top: 16px; padding: 14px 16px; background: rgba(184,134,11,0.08); border-left: 3px solid var(--color-accent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: 0.85rem; color: var(--color-dark-gray); line-height: 1.6; }
.contact-visit-map { border-radius: var(--radius-lg); overflow: hidden; min-height: 300px; box-shadow: var(--shadow-sm); }
.contact-visit-map iframe { width: 100%; height: 100%; min-height: 300px; border: none; }
.contact-network-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 768px) { .contact-network-grid { grid-template-columns: 1fr; } }
.contact-region-card { background: var(--color-off-white); border: 1px solid var(--color-light-gray); border-radius: var(--radius-lg); padding: 24px; }
.contact-region-card h4 { font-family: var(--font-heading); font-size: 1.05rem; color: var(--color-primary); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.contact-region-item { font-size: 0.88rem; color: var(--color-dark-gray); padding: 8px 0; border-bottom: 1px solid var(--color-light-gray); display: flex; align-items: center; gap: 8px; }
.contact-region-item:last-child { border-bottom: none; }
.contact-region-dot { width: 6px; height: 6px; background: var(--color-accent); border-radius: 50%; flex-shrink: 0; }
.contact-service-note { margin-top: 24px; padding: 16px 20px; background: rgba(184,134,11,0.06); border: 1px dashed var(--color-accent); border-radius: var(--radius-md); font-size: 0.9rem; color: var(--color-dark-gray); text-align: center; line-height: 1.6; }
.contact-compliance-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.contact-compliance-card { background: var(--color-off-white); border: 1px solid var(--color-light-gray); border-radius: var(--radius-md); padding: 24px; }
.contact-compliance-card h4 { font-family: var(--font-heading); font-size: 1rem; color: var(--color-primary); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.contact-compliance-card p { font-size: 0.88rem; color: var(--color-dark-gray); line-height: 1.7; }
.contact-eco-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 768px) { .contact-eco-grid { grid-template-columns: 1fr; } }
.contact-eco-directions { background: var(--color-off-white); border-radius: var(--radius-lg); padding: 28px; }
.contact-eco-directions h4 { font-family: var(--font-heading); font-size: 1.1rem; color: var(--color-primary); margin-bottom: 16px; }
.contact-eco-direction-item { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--color-light-gray); font-size: 0.9rem; color: var(--color-dark-gray); }
.contact-eco-direction-item:last-child { border-bottom: none; }
.contact-eco-icon { width: 28px; height: 28px; background: var(--color-accent); border-radius: 50%; display: flex; align-items: center; justify-content: flex-start; color: #1A1A2E !important; font-size: 14px; flex-shrink: 0; }
.contact-eco-vision { background: linear-gradient(135deg, #F5F0EB 0%, #E8E4DF 100%); border-radius: var(--radius-lg); padding: 32px; display: flex; flex-direction: column; justify-content: flex-start; }
.contact-eco-vision h4 { font-family: var(--font-heading); font-size: 1.1rem; color: var(--color-accent-light); margin-bottom: 16px; }
.contact-eco-vision p { font-size: 0.95rem; color: rgba(26,26,46,0.8); line-height: 1.8; margin-bottom: 16px; }
.contact-eco-vision-quote { font-family: var(--font-heading); font-size: 1.05rem; color: var(--color-accent-light); font-style: italic; line-height: 1.7; padding-top: 16px; border-top: 1px solid rgba(26,26,46,0.12); }
.contact-page-divider { height: 1px; background: var(--color-light-gray); margin: 56px 0; }
@media (max-width: 768px) {
  .contact-section-header { flex-direction: column; }
  .contact-core-grid { grid-template-columns: 1fr; }
  .contact-complaint-grid { grid-template-columns: 1fr; }
  .contact-commitments { grid-template-columns: 1fr; }
  .contact-network-grid { grid-template-columns: 1fr; }
  .contact-compliance-grid { grid-template-columns: 1fr; }
  .contact-eco-grid { grid-template-columns: 1fr; }
}

/* ====== News Page 10-Article Grid ====== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 48px; }
@media (max-width: 1024px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .news-grid { grid-template-columns: 1fr; } }
.news-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--color-light-gray); transition: var(--transition); cursor: pointer; }
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.news-card-image { height: 200px; overflow: hidden; }
.news-card-image .bg { width: 100%; height: 100%; transition: transform 0.5s; }
.news-card:hover .news-card-image .bg { transform: scale(1.05); }
.news-card-info { padding: 24px; }
.news-date { font-size: 0.8rem; color: var(--color-mid-gray); display: block; margin-bottom: 8px; }
.news-category { display: inline-block; font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.8px; padding: 3px 10px; border-radius: 20px; margin-bottom: 10px; }
.news-category-company { background: rgba(212,175,55,0.12); color: var(--color-accent-dark); }
.news-category-industry { background: rgba(26,26,46,0.08); color: var(--color-primary); }
.news-category-project { background: rgba(44,44,62,0.08); color: var(--color-secondary); }
.news-category-exhibition { background: rgba(184,134,11,0.08); color: var(--color-accent-dark); }
.news-category-media { background: rgba(139,115,85,0.1); color: #8B7355; }
.news-card-info h3 { font-family: var(--font-heading); font-size: 1.05rem; line-height: 1.4; margin-bottom: 10px; color: var(--color-primary); }
.news-card-info p { font-size: 0.88rem; color: var(--color-mid-gray); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-link { display: inline-block; margin-top: 12px; font-size: 0.85rem; font-weight: 600; color: var(--color-accent); }
.news-card-link:hover { color: var(--color-accent-light); }

/* News filter tabs */
.news-filter { display: flex; gap: 8px; justify-content: flex-start; flex-wrap: wrap; margin-bottom: 8px; }
.news-filter-btn { padding: 8px 20px; border: 1px solid var(--color-light-gray); border-radius: 20px; background: transparent; font-size: 0.88rem; cursor: pointer; transition: var(--transition); color: var(--color-dark-gray); }
.news-filter-btn.active, .news-filter-btn:hover { background: var(--color-accent); color: #1A1A2E !important; border-color: var(--color-accent); }

/* ====== Design Scheme Timeline (products.html) ====== */
.design-scheme-section { background: var(--color-off-white); }
.scheme-timeline { margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 1024px) { .scheme-timeline { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .scheme-timeline { grid-template-columns: 1fr; } }
.scheme-phase { background: #fff; border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-sm); border: 1px solid var(--color-light-gray); }
.phase-header { margin-bottom: 20px; }
.phase-tag { display: inline-block; background: var(--color-accent); color: #1A1A2E !important; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; padding: 3px 10px; border-radius: 20px; margin-bottom: 8px; }
.phase-header h3 { font-family: var(--font-heading); font-size: 1.05rem; color: var(--color-primary); margin: 0; }
.scheme-steps { display: flex; flex-direction: column; gap: 12px; }
.scheme-step { display: flex; align-items: flex-start; gap: 12px; padding: 14px; background: var(--color-off-white); border-radius: 10px; cursor: pointer; transition: var(--transition); border: 1px solid transparent; }
.scheme-step:hover { background: #fff; border-color: var(--color-accent); transform: translateX(4px); }
.step-num { width: 28px; height: 28px; background: var(--color-accent); color: #1A1A2E !important; border-radius: 50%; display: flex; align-items: center; justify-content: flex-start; font-size: 0.75rem; font-weight: 700; flex-shrink: 0; margin-top: 2px; }
.scheme-step h4 { font-size: 0.9rem; font-weight: 600; color: var(--color-primary); margin: 0 0 4px; }
.scheme-step p { font-size: 0.8rem; color: var(--color-mid-gray); margin: 0; line-height: 1.5; }



/* ====== About Page Video Sections - Centered & Aligned ====== */
.about-hero-video-section {
  position: relative;
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.about-video-wrap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  max-width: 1200px;
  left: 50%;
  transform: translateX(-50%);
}

.about-video-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* Hero Full-Page Video - Spans full width at bottom */
.about-hero-video-section.hero-fullpage {
  height: 1000px;
  min-height: 1000px;
  max-height: 1000px;
  margin: 0;
  padding: 0;
}
.about-hero-video-section.hero-fullpage .about-video-wrap {
  max-width: 1200px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
}
.about-hero-video-section.hero-fullpage .about-video-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}


.about-video-content {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 80px 40px;
  text-align: left;
}

.about-video-content .section-subtitle,
.about-video-content h1,
.about-video-content .breadcrumb {
  text-align: left;
}

.about-video-content > p {
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
  line-height: 1.8;
  max-width: 100%;
}

/* Ensure no left offset on any content within video sections */
.about-hero-video-section * {
  max-width: 100%;
  box-sizing: border-box;
}

/* ====== About Page Centered Layout ====== */
.about-hero-video-section .container,
.about-content-section .container,
.about-core-section .container,
.about-team-section .container,
.about-csr-section .container { text-align: center; }

.about-hero-video-section p,
.about-content-section .section-desc,
.about-core-section .section-desc,
.about-team-section .section-desc,
.about-csr-section .section-desc {
  max-width: 800px;
  margin: 0 auto 3rem;
  text-align: center;
}

.about-hero-video-section .container > p { margin: 0 auto; }

/* Center images in about page */
.about-hero-video-section img,
.about-content-section img,
.about-core-section img,
.about-team-section img,
.about-csr-section img { margin: 0 auto; }



/* ====== About Page Fixed Paragraph Layout ====== */
.about-text-block p {
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
  line-height: 1.8;
  margin-bottom: 1.5rem;
  padding: 0;
}

.about-text-block {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Ensure video content is properly left-aligned like body text */
.about-video-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  width: 100%;
}

.about-video-content .section-subtitle,
.about-video-content h1,
.about-video-content .breadcrumb {
  max-width: 100%;
  text-align: left;
  margin-left: 0;
  margin-right: auto;
}

.about-video-content > p {
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
  line-height: 1.8;
  width: 100%;
}

/* Fix any potential overflow */
.section-padding {
  overflow-x: hidden;
}



/* ====== Stats Row (about.html) ====== */
.stats-row {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  width: 90%;
  margin: 48px auto 0;
  padding: 0;
}

.stats-row .stat-number {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: 8px;
}

.stats-row .stat-label {
  font-size: 0.9rem;
  color: var(--color-mid-gray);
  line-height: 1.4;
}

@media (max-width: 768px) {
  .stats-row {
    flex-wrap: wrap;
    gap: 24px;
  }

  .stats-row { width: 40%; }
}

  .stats-row .stat-number {
    font-size: 2rem;
  }

/* ====== Tech Service Grid (about.html) ====== */
.tech-service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 1024px) { .tech-service-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .tech-service-grid { grid-template-columns: 1fr; } }
.tech-card { background: #fff; border-radius: var(--radius-lg); padding: 28px; border: 1px solid var(--color-light-gray); box-shadow: var(--shadow-sm); transition: var(--transition); }
.tech-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--color-accent); }
.tech-icon { font-size: 2.2rem; margin-bottom: 16px; }
.tech-card h4 { font-family: var(--font-heading); font-size: 1rem; color: var(--color-primary); margin-bottom: 10px; }
.tech-card p { font-size: 0.88rem; color: var(--color-mid-gray); line-height: 1.7; margin: 0; }

/* ====== Products Quick Nav Bar ====== */
.product-quick-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 48px;
}
@media (max-width: 768px) { .product-quick-nav { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .product-quick-nav { grid-template-columns: 1fr 1fr; gap: 12px; } }
.quick-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 24px 16px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-light-gray);
  text-decoration: none;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.quick-nav-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}
.qn-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  position: relative;
}
.qn-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}
.quick-nav-item span {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.9rem;
  text-align: center;
}
.quick-nav-item small {
  font-size: 0.75rem;
  color: var(--color-mid-gray);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ====== Series Header ====== */
.series-header {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
  padding-bottom: 40px;
  border-bottom: 2px solid var(--color-light-gray);
}
@media (max-width: 900px) {
  .series-header { grid-template-columns: 1fr; }
  .series-header-image { display: none; }
}
.series-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-accent);
  margin-bottom: 8px;
}
.series-title { color: #1A1A2E;
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-primary);
  margin: 0 0 16px;
}
.series-desc {
  font-size: 0.92rem;
  color: var(--color-mid-gray);
  line-height: 1.8;
  margin: 0 0 24px;
}
.series-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
}
.stat-num {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--color-mid-gray);
  margin-top: 4px;
}
.series-header-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 240px;
}
.series-header-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ====== Stone Color Groups ====== */
.stone-color-groups {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.color-group-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-light-gray);
}
.color-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(0,0,0,0.15);
  flex-shrink: 0;
}
.color-group-header h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-primary);
  margin: 0;
}
.variety-count {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--color-mid-gray);
  background: var(--color-light-gray);
  padding: 2px 10px;
  border-radius: 20px;
}

/* ====== Stone Cards Grid ====== */
.stone-cards-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
@media (max-width: 1200px) { .stone-cards-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 900px) { .stone-cards-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .stone-cards-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; } }
.stone-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-light-gray);
  transition: var(--transition);
  cursor: pointer;
}
.stone-card:hover {
          box-shadow: 0 12px 40px rgba(0,0,0,0.15), 0 0 0 2px var(--color-accent);
          transform: translateY(-6px);
          border-color: var(--color-accent);
}
.stone-card-img {
  height: 160px;
  overflow: hidden;
  background: var(--color-off-white);
}
.stone-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.stone-card:hover .stone-card-img img {
  transform: scale(1.08);
}
.stone-card-info {
  padding: 12px;
}
.stone-card-info h4 {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0 0 4px;
  line-height: 1.4;
}
.stone-card-info p {
  font-size: 0.72rem;
  color: var(--color-mid-gray);
  margin: 0 0 8px;
  font-style: italic;
}
.stone-tags { display: flex; gap: 4px; flex-wrap: wrap; }
.stone-tag {
  font-size: 0.65rem;
  padding: 2px 7px;
  background: rgba(184,134,11,0.08);
  color: var(--color-accent);
  border-radius: 10px;
  font-weight: 500;
}

/* ====== Surface Treatment Bar ====== */
.surface-treatment-bar {
  margin-top: 48px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-light-gray);
  padding: 24px 32px;
  box-shadow: var(--shadow-sm);
}
.surface-treatment-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.st-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}
.st-options {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  flex: 1;
}
.st-option {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--color-dark-gray);
  text-align: center;
}
.st-icon { font-size: 1.2rem; }
.st-cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s;
}
.st-cta:hover { color: var(--color-accent-light); }

/* Product cat section alternating bg */
.product-cat-section:nth-of-type(even) { background: var(--color-off-white); }

/* ═══════════════════════════════════════════
   10 SERIES PRODUCT LAYOUT
═══════════════════════════════════════════ */

/* Series Navigation Bar */
.series-nav-bar {
  background: #fff;
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 70px;
  z-index: 90;
  padding: 12px 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.series-nav-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}
.series-nav-scroll::-webkit-scrollbar { height: 4px; }
.series-nav-scroll::-webkit-scrollbar-thumb { background: #ddd; border-radius: 2px; }
.series-nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: #f8f8f8;
  border-radius: 20px;
  color: #333;
  text-decoration: none;
  white-space: nowrap;
  font-size: 14px;
  transition: all 0.3s;
}
.series-nav-item:hover {
  background: var(--color-primary);
  color: #1A1A2E !important;
}
.series-nav-item:hover .sn-dot {
  transform: scale(1.2);
}
.sn-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  transition: transform 0.3s;
}
.sn-text { font-weight: 500; }

/* Series Overview Grid */
.series-overview-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 40px;
  position: relative;
  z-index: 1;
}
@media (max-width: 1200px) { .series-overview-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 900px) { .series-overview-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .series-overview-grid { grid-template-columns: repeat(2, 1fr); } }
.series-overview-card {
  background: #fff;
  border-radius: 10px;
  padding: 12px 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  transition: all 0.3s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  height: 120px;
  min-height: 120px;
  max-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.series-overview-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: #c8a96e;
  pointer-events: none;
}
.series-overview-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

/* Card-level anchor wrapper - inherits hover via CSS inheritance */
a.series-card-link {
  overflow: visible;
  display: block;
  text-decoration: none;
  color: inherit;
  /* Ensure entire card is clickable */
  position: relative;
  z-index: 100 !important;
  touch-action: manipulation;
}

/* Make all card contents click-through so the entire card is clickable */
a.series-card-link .series-overview-card,
a.series-card-link .soc-number,
a.series-card-link .soc-title,
a.series-card-link .soc-count,
a.series-card-link .soc-desc {
  pointer-events: none !important;
}

/* Ensure ::before pseudo-element doesn't block clicks */
.series-overview-card::before {
  pointer-events: none !important;
}

.soc-number {
  font-family: 'Playfair Display', serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--stone-color, #c8a96e);
  line-height: 1;
  margin-bottom: 2px;
}
.soc-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 2px;
  line-height: 1.2;
}
.soc-count {
  font-size: 0.75rem;
  color: #c8a96e;
  font-weight: 600;
  margin-bottom: 2px;
}
.soc-desc {
  font-size: 0.7rem;
  color: #666;
  line-height: 1.3;
}

/* English card elements - match CN card style (white bg + dark text) */
a.series-overview-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
  color: inherit;
  position: relative;
  z-index: 100 !important;
  cursor: pointer;
  touch-action: manipulation;
}
/* Make English series card contents click-through */
a.series-overview-card .series-overview-icon,
a.series-overview-card .series-overview-text,
a.series-overview-card .series-overview-arrow,
a.series-overview-card .series-overview-text h3,
a.series-overview-card .series-overview-text p {
  pointer-events: none !important;
}
/* English card ::before pseudo-element also click-through */
a.series-overview-card::before {
  pointer-events: none !important;
}
.series-overview-icon {
  font-family: 'Playfair Display', serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: #c8a96e;
  line-height: 1;
  margin-bottom: 2px;
}
.series-overview-text {
  flex: 1;
}
.series-overview-text h3 {
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  color: #333;
  margin: 0 0 2px;
  line-height: 1.2;
}
.series-overview-text p {
  font-size: 0.7rem;
  color: #666;
  line-height: 1.3;
  margin: 0;
}
.series-overview-arrow {
  font-size: 0.75rem;
  color: #c8a96e;
  font-weight: 600;
  line-height: 1;
  margin-top: 2px;
}

/* Series Section */
.product-series-section {
  padding: 0 !important;
  margin: 0 !important;
  scroll-margin-top: 100px !important;
}

/* All scroll target sections: prevent fixed nav from covering content */
[id]:target,
section[id],
.section-padding[id] {
  scroll-margin-top: 100px !important;
}

/* Ensure all series sections (s1-s10) have proper scroll margin */
[id^="s"] {
  scroll-margin-top: 100px !important;
}
.series-section-header {
  padding: 18px 0 !important;
  max-width: 1200px;
  margin: 0 auto;
  border-bottom: 1px solid rgba(200,169,110,0.3);
  display: flex;
  align-items: center;
  box-sizing: border-box;
  overflow: visible;
}
.series-section-header .container {
  max-width: 100%;
  padding: 0 40px;
}
.series-section-content {
  padding: 20px 0;
}
.series-header {
  display: flex;
  align-items: center;
  gap: 24px;
  width: 100%;
}
.series-header-left {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0;
}
.series-number {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  color: #1A1A2E;
  line-height: 1;
  min-width: 40px;
}
.series-header-content { flex: 1; }
.series-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: #c8a96e;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 2px;
  display: block;
}
.series-title {
  font-family: 'Noto Serif TC', 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: #1A1A2E;
  margin-bottom: 2px;
}
.series-desc {
  font-size: 1rem;
  color: #666;
  line-height: 1.8;
  margin-bottom: 20px;
}
.series-desc-en {
  font-size: 0.7rem;
  color: #1A1A2E;
  opacity: 0.65;
  font-weight: 400;
  letter-spacing: 1px;
}
.series-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.meta-item {
  font-size: 0.9rem;
  color: #666;
}
.meta-item strong {
  color: #333;
  font-weight: 600;
}
.series-header-image {
  width: 240px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.series-header-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.series-more-link {
  text-align: center;
  margin-top: 24px;
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: linear-gradient(135deg, #c8a96e 0%, #a88b5a 100%);
  color: #1A1A2E !important;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #a88b5a 0%, #8a7348 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(200, 169, 110, 0.4);
}
.btn-gold {
  background: linear-gradient(135deg, #d4af37 0%, #b8962f 100%);
  color: #1a1a2e;
}
.btn-gold:hover {
  background: linear-gradient(135deg, #b8962f 0%, #9a7d28 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
}
.btn-outline-light {
  background: transparent;
  color: #1A1A2E !important;
  border: 2px solid #fff;
}
.btn-outline-light:hover {
  background: #fff;
  color: #333;
}

/* Stone Cards Grid */
.stone-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transition: all 0.3s;
  cursor: pointer;
}
.stone-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.stone-card-img {
  width: 100%;
  height: 200px;
  overflow: hidden;
}
.stone-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.stone-card:hover .stone-card-img img {
  transform: scale(1.08);
}
.stone-card-info {
  padding: 20px;
}
.stone-card-info h4 {
  font-family: 'Noto Serif TC', 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 4px;
}
.stone-card-info p {
  font-size: 0.9rem;
  color: #888;
  margin-bottom: 12px;
}
.stone-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.stone-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: #f5f0eb;
  color: #666;
  border-radius: 12px;
}

/* Stone Modal */
.stone-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
  z-index: 1000;
  align-items: center;
  justify-content: flex-start;
}
.stone-modal.active { display: flex; }
.stone-modal-content {
  background: #fff;
  border-radius: 16px;
  max-width: 1200px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.stone-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #333;
  color: #1A1A2E !important;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}
.stone-modal-body {
  display: flex;
}
.stone-modal-img {
  width: 50%;
  height: 400px;
  overflow: hidden;
}
.stone-modal-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.stone-modal-info {
  width: 50%;
  padding: 40px;
}
.stone-modal-info h3 {
  font-family: 'Noto Serif TC', 'Playfair Display', serif;
  font-size: 1.8rem;
  color: #333;
  margin-bottom: 8px;
}
.modal-en {
  font-size: 1rem;
  color: #888;
  margin-bottom: 16px;
}
.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.modal-tag {
  font-size: 0.8rem;
  padding: 4px 12px;
  background: #f5f0eb;
  color: #666;
  border-radius: 12px;
}
.modal-desc {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.7;
  margin-bottom: 24px;
}
.modal-specs h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
}
.modal-specs ul {
  list-style: none;
  padding: 0;
}
.modal-specs li {
  font-size: 0.9rem;
  color: #555;
  padding: 6px 0;
  border-bottom: 1px solid #eee;
}

/* Responsive */
@media (max-width: 900px) {
  .series-header { flex-direction: column; }
  .series-header-image { width: 100%; height: 200px; }
  .series-number { color: #1A1A2E; font-size: 3rem; min-width: 50px; }
  .series-title { color: #1A1A2E; font-size: 2rem; }
  .stone-modal-body { flex-direction: column; }
  .stone-modal-img { width: 100%; height: 250px; }
  .stone-modal-info { width: 100%; padding: 24px; }
}
@media (max-width: 600px) {
  .series-nav-item { padding: 6px 12px; font-size: 12px; }
  .series-nav-item .sn-text { display: none; }
  .series-number { color: #1A1A2E; font-size: 2rem; min-width: 40px; }
  .series-title { color: #1A1A2E; font-size: 1.6rem; }
  .series-meta { flex-direction: column; gap: 8px; }
  .stone-cards-grid { grid-template-columns: 1fr; }
}
/* ── P1 Upgrade: Brand-wide color tokens & sticky glassmorphism ── */

/* Navbar always visible with light background - scrolled state just adds slightly deeper shadow */

/* Nav logo text - always dark (navbar always has light background) */
.navbar .nav-logo-text strong { color: #1A1A2E !important; }
.navbar .nav-logo-text small { color: rgba(26,26,46,0.65); }

/* Nav links - always dark on light background */
.navbar .nav-links > a,
.navbar .nav-dropdown > a { color: var(--color-primary) !important; }
.navbar .nav-links > a:hover,
.navbar .nav-dropdown > a:hover,
.navbar .nav-links > a.active,
.navbar .nav-dropdown > a.active { color: var(--color-accent) !important; }

/* Nav dropdown arrow - always dark */
.navbar .nav-dropdown > a::after {
  border-color: var(--color-primary) transparent transparent transparent;
}

/* Mega panel */
.mega-panel {
  background: #F5F0EB;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 2px solid var(--color-accent);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  /* max-height for projects mega-panel: always fit 23 items + viewall in viewport */
  max-height: calc(100vh - var(--nav-height) - 40px);
  height: auto;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(212,175,55,0.4) transparent;
}
.mega-panel::-webkit-scrollbar { width: 4px; }
.mega-panel::-webkit-scrollbar-track { background: transparent; }
.mega-panel::-webkit-scrollbar-thumb { background: rgba(212,175,55,0.4); border-radius: 4px; }
.mega-panel-link { border-bottom: 1px solid rgba(0,0,0,0.06); }
.mega-panel-link:hover { background: rgba(212,175,55,0.08); }
.mega-panel-text strong { color: var(--color-primary) !important; }
.mega-panel-text span { color: rgba(26,26,46,0.6) !important; }
.mega-panel-viewall a { color: var(--color-accent) !important; }

/* Dropdown panel */
.dropdown-panel {
  background: #F5F0EB;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 2px solid var(--color-accent);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  max-height: calc(100vh - var(--nav-height) - 16px);
  overflow-y: auto;
}
.dropdown-item { color: var(--color-primary) !important; border-bottom: 1px solid rgba(0,0,0,0.06); }
.dropdown-item:hover { background: rgba(212,175,55,0.1); color: var(--color-accent) !important; }

/* Hero gradient - use brand palette */
.hero {
  background: linear-gradient(135deg, #F5F0EB 0%, #E8E4DF 50%, #D4CFC8 100%);
}

/* CTA section gradient */
.cta-section {
  background: #F5F0EB;
}

/* Stone card - uniform 4:3 with hover lift */
.stone-card {
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(0,0,0,0.06);
  transition: transform 0.3s cubic-bezier(0.25,0.46,0.45,0.94), box-shadow 0.3s;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
}
.stone-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
  border-color: transparent;
}
.stone-card-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  position: relative;
  background: #f5f0eb;
}
.stone-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.stone-card:hover .stone-card-img img { transform: scale(1.08); }
.stone-card-zoom {
  position: absolute; top: 10px; right: 10px;
  width: 30px; height: 30px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: flex-start;
  opacity: 0; transform: scale(0.7);
  transition: opacity 0.3s, transform 0.3s;
  font-size: 0.85rem;
}
.stone-card:hover .stone-card-zoom { opacity: 1; transform: scale(1); }
.stone-card-info { padding: 14px 16px; }
.stone-card-info h4 { font-size: 0.9rem; font-weight: 600; color: var(--color-primary); margin-bottom: 4px; }
.stone-card-info p { font-size: 0.78rem; color: var(--color-mid-gray); }

/* News category - warm brand palette */
.news-category-project { background: rgba(139,115,85,0.12); color: #8B7355; }
.news-category-exhibition { background: rgba(184,134,11,0.10); color: var(--color-accent-dark); }

/* Product detail modal - dark theme */
.stone-modal-overlay {
  background: rgba(26,26,46,0.85);
  backdrop-filter: blur(8px);
}
.stone-modal {
  background: #F5F0EB;
  border-radius: 16px;
  border-top: 4px solid var(--color-accent);
  box-shadow: 0 32px 80px rgba(0,0,0,0.3);
}
.stone-modal-header {
  background: var(--color-primary);
  border-radius: 12px 12px 0 0;
}
.stone-modal-img-main { border-radius: 12px; }

/* Footer - unified dark brand theme */
.footer {
  background: #F5F0EB;
  color: rgba(26,26,46,0.65);
  padding: 64px 0 0;
  font-family: "Inter", "Noto Sans TC", sans-serif;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 48px 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand {
  grid-column: span 1;
}
.footer-brand .nav-logo {
  color: #1A1A2E !important;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.footer-brand .nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.footer-brand .nav-logo-text strong {
  font-size: 1rem;
  font-weight: 600;
  color: #1A1A2E !important;
}
.footer-brand .nav-logo-text small {
  font-size: 0.7rem;
  font-weight: 400;
  color: rgba(26,26,46,0.55);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer-brand p {
  color: rgba(26,26,46,0.6);
  font-size: 0.8rem;
  line-height: 1.5;
  letter-spacing: 0.3px;
  margin: 12px 0 16px;
  max-width: 95%;
  word-wrap: normal;
  overflow: hidden;
}
.footer-copyright {
  color: rgba(26,26,46,0.45);
  font-size: 0.75rem;
  line-height: 1.7;
  margin-top: 8px;
}
.footer-copyright:first-of-type {
  margin-top: 24px;
}
.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.footer-social a {
  width: 36px; height: 36px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  color: rgba(26,26,46,0.7);
  transition: all 0.25s ease;
  font-size: 0.85rem;
  text-decoration: none;
}
.footer-social a:hover {
  background: #D4AF37;
  border-color: #D4AF37;
  color: #1A1A2E;
  transform: translateY(-2px);
}
.footer-col {
  display: flex;
  flex-direction: column;
  text-align: left;
}
.footer-col h4 {
  color: #1A1A2E !important;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding-bottom: 12px;
  border-bottom: 2px solid #D4AF37;
  display: inline-block;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col ul li {
  margin-bottom: 10px;
  padding-left: 0;
}
.footer-col ul li a {
  color: rgba(26,26,46,0.65);
  font-size: 0.85rem;
  font-weight: 400;
  text-decoration: none;
  transition: all 0.2s ease;
  display: inline-block;
}
.footer-col ul li a:hover {
  color: #D4AF37;
  padding-left: 6px;
}
.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-contact-info p {
  color: rgba(26,26,46,0.7);
  font-size: 0.83rem;
  margin: 0;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
  text-align: left;
}
.footer-contact-info p .icon {
  flex-shrink: 0;
  width: 18px;
  color: #D4AF37;
}
.footer-contact-info p strong {
  color: #1A1A2E !important;
  font-weight: 500;
}
.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 48px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  font-size: 0.76rem;
  color: rgba(26,26,46,0.5) !important;
  background: #E8E4DF !important;
}


/* Footer professional refinements */
.brand-intro {
  color: rgba(26,26,46,0.6) !important;
  font-size: 0.78rem !important;
  line-height: 1.55 !important;
  letter-spacing: 0.2px !important;
  margin-top: 14px !important;
}

.contact-item {
  display: flex !important;
  align-items: baseline !important;
  gap: 10px !important;
}

.contact-item .icon {
  flex-shrink: 0;
  width: 16px;
  text-align: center;
}

.footer-bottom p {
  margin: 0;
  padding: 0;
  font-size: 0.72rem;
  color: rgba(26,26,46,0.45);
  text-align: left;
}

/* Mobile responsive */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 28px !important;
    padding: 0 32px 36px !important;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    padding: 0 20px 28px !important;
  }
  .footer-bottom {
    padding: 16px 20px !important;
    justify-content: flex-start !important;
  }
}

/* Footer Navigation: 2x3 grid layout */
.footer-col:nth-child(2) ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px 16px;
}
.footer-col:nth-child(2) ul li {
  margin-bottom: 2px;
}
.footer-col:nth-child(2) ul li a {
  font-size: 0.8rem;
  display: block;
}

/* Inner page product category section */
.inner-page .product-cat-section {
  background: #F5F0EB;
}
.inner-page .product-cat-section .container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 0;
  padding: 20px 40px;
  box-shadow: none;
}

/* Inner page product series section */
.inner-page .product-series-section {
  background: #F5F0EB;
  padding: 0 !important;
}
.inner-page .product-series-section > .container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Inner page series overview section */
.inner-page .series-overview-section {
  background: #F5F0EB;
  padding: calc(var(--nav-height) + 20px) 0 60px 0;
  position: relative;
  z-index: 1;
}
.inner-page .series-overview-section .container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* Footer Product Series: 2 columns x 5 rows */
.footer-col:nth-child(3) ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px 12px;
}
.footer-col:nth-child(3) ul li {
  margin-bottom: 2px;
}
.footer-col:nth-child(3) ul li a {
  font-size: 0.75rem;
  display: block;
}

/* ===== Navigation Active Enhancement ===== */
/* 确保active链接在所有状态下都有明显的视觉效果 */
.navbar .nav-links > a.active,
.navbar .nav-dropdown > a.active {
    color: var(--color-accent) !important;
    font-weight: 600 !important;
    position: relative;
}

.navbar .nav-links > a.active::after,
.navbar .nav-dropdown > a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent) !important;
    width: 100% !important;
}

/* Active nav link */
.nav-links > a.active,
.nav-dropdown > a.active {
    color: var(--color-accent) !important;
    font-weight: 600 !important;
}

/* 语言切换按钮增强 */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(212,175,55,0.15);
    border: 1px solid rgba(26,26,46,0.12);
}

.lang-switch a {
    padding: 2px 8px;
    border-radius: 12px;
    transition: all 0.2s ease;
}

.lang-switch a:hover {
    background: rgba(212,175,55,0.2);
}

.lang-switch a.active {
    background: var(--color-accent);
    color: var(--color-primary) !important;
    font-weight: 600;
}



/* ── News Modal ───────────────────────────────────────────────────── */
.news-modal-tpl { display: none !important; }

.news-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 9000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-y: auto;
}
.news-modal-overlay.active { display: flex; }

.news-modal {
  background: #fff;
  border-radius: 16px;
  max-width: 760px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 24px 80px rgba(0,0,0,0.35);
  margin: auto;
}

.news-modal-close {
  position: sticky;
  top: 16px;
  float: right;
  margin: 16px 16px 0 0;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 18px;
  cursor: pointer;
  color: #333;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  flex-shrink: 0;
  transition: background 0.2s;
}
.news-modal-close:hover { background: #f0f0f0; }

.news-modal-img-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 16px 16px 0 0;
  background: #f5f5f5;
}
.news-modal-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-modal-body { padding: 28px 32px 36px; }

.news-modal-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.news-modal-meta .news-date { color: #888; font-size: 0.875rem; }

.news-modal-title {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.3;
  color: #1a1a2e;
  margin: 0 0 20px;
}

.news-modal-text p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #333;
  margin: 0;
}

@media (max-width: 600px) {
  .news-modal-overlay { padding: 0; align-items: flex-end; }
  .news-modal { border-radius: 16px 16px 0 0; max-height: 92vh; }
  .news-modal-body { padding: 20px 20px 28px; }
  .news-modal-title { font-size: 1.25rem; }
}

/* ============================================
   iPhone / Mobile Deep Optimization
   ============================================ */

/* iOS System Font Optimization */
@supports (-webkit-touch-callout: none) {
  :root {
    --font-heading: 'Playfair Display', 'Noto Serif TC', 'PingFang SC', 'Hiragino Sans GB', -apple-system, serif;
    --font-body: 'Inter', 'Noto Sans TC', 'PingFang SC', 'Hiragino Sans GB', -apple-system, sans-serif;
  }
}

/* Base Mobile Optimizations */
@media (max-width: 768px) {
  /* Prevent horizontal scroll */
  html, body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
  }

  /* Improve touch response */
  * {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

  /* Section spacing reduction */
  .section-padding { padding: 30px 0; }

  /* Container adjustments */
  .container { width: 92%; }

  /* Typography scaling for mobile */
  h1 { font-size: clamp(1.8rem, 6vw, 2.5rem); line-height: 1.25; }
  h2 { font-size: clamp(1.5rem, 5vw, 2rem); margin-bottom: 0.75rem; }
  h3 { font-size: clamp(1.1rem, 4vw, 1.4rem); }
  p { font-size: 0.95rem; line-height: 1.7; }

  /* Button touch targets - min 44px */
  .btn, button, .nav-links a, .footer-links a {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* iPhone Specific (max-width: 480px) */
@media (max-width: 480px) {
  :root { --nav-height: 64px; }

  .section-padding { padding: 48px 0; }

  /* Further typography refinement */
  h1 { font-size: 1.75rem; letter-spacing: -0.01em; }
  h2 { font-size: 1.4rem; }
  h3 { font-size: 1.15rem; }
  p { font-size: 0.9rem; line-height: 1.65; }

  /* Smaller container padding */
  .container { width: 94%; }

  /* Card spacing */
  .scenario-card, .featured-project-card, .product-cat-grid {
    border-radius: 12px;
  }

  /* Form inputs - prevent iOS zoom */
  input, textarea, select {
    font-size: 16px !important;
    -webkit-appearance: none;
    border-radius: 8px;
  }

  /* Touch-friendly spacing */
  .trust-items { gap: 12px; }
  .trust-item { padding: 20px 12px; }
  .trust-number { font-size: 1.6rem; }

  /* Project cards */
  .featured-projects-grid { gap: 12px; }
  .featured-project-card .card-overlay { padding: 16px; }
  .featured-project-card h4 { font-size: 1rem; }

  /* Product category */
  .product-cat-grid { gap: 32px; }
  .product-cat-content h3 { font-size: 1.3rem; }

  /* Footer compact */
  .footer-grid { gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}

/* iPhone SE / Small devices (max-width: 375px) */
@media (max-width: 375px) {
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.25rem; }
  .section-padding { padding: 40px 0; }

  .trust-items { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .trust-item { padding: 16px 8px; }
  .trust-number { font-size: 1.4rem; }
  .trust-label { font-size: 0.7rem; }
}

/* Safe area for iPhone X+ notch */
@supports (padding-top: env(safe-area-inset-top)) {
  .navbar {
    padding-top: env(safe-area-inset-top);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }

  .mobile-menu {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }

  body {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* Smooth scrolling for iOS */
@supports (-webkit-overflow-scrolling: touch) {
  .mobile-menu,
  .news-modal-body,
  .product-modal-body {
    -webkit-overflow-scrolling: touch;
  }
}

/* Prevent text size adjustment on orientation change */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* Image optimization for mobile */
@media (max-width: 768px) {
  img {
    image-rendering: -webkit-optimize-contrast;
  }

  /* Lazy load placeholder */
  img[loading="lazy"] {
    background: linear-gradient(110deg, #f0f0f0 8%, #f8f8f8 18%, #f0f0f0 33%);
    background-size: 200% 100%;
  }
}

/* Language switcher mobile optimization */
@media (max-width: 768px) {
  .lang-switcher {
    position: relative;
    z-index: 1001;
  }

  .lang-switcher a {
    padding: 8px 12px;
    font-size: 0.85rem;
    min-height: 36px;
  }
}

/* Mega menu mobile adjustments */
@media (max-width: 900px) {
  .mega-panel {
    min-width: auto;
    width: calc(100vw - 32px);
    left: 16px !important;
    right: 16px !important;
    transform: none !important;
  }

  .mega-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .mega-featured {
    display: none;
  }
}

/* Product quick nav mobile */
@media (max-width: 480px) {
  .product-quick-nav {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .product-quick-item {
    padding: 12px 8px;
  }

  .product-quick-item .num {
    font-size: 1.2rem;
  }

  .product-quick-item .title {
    font-size: 0.8rem;
  }

  .product-quick-item .desc {
    font-size: 0.7rem;
  }
}

/* Contact page mobile */
@media (max-width: 768px) {
  .contact-hero-content h1 {
    font-size: 2rem;
  }

  .contact-info-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-form-section .container {
    padding: 24px 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* Projects page mobile */
@media (max-width: 768px) {
  .project-filter {
    flex-wrap: wrap;
    gap: 8px;
  }

  .project-filter button {
    padding: 8px 16px;
    font-size: 0.85rem;
    flex: 1;
    min-width: 80px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* News page mobile */
@media (max-width: 640px) {
  .news-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .news-card {
    border-radius: 12px;
  }

  .news-content {
    padding: 16px;
  }

  .news-title {
    font-size: 1rem;
  }

  .news-excerpt {
    font-size: 0.85rem;
  }
}

/* About page mobile */
@media (max-width: 768px) {
  .about-hero-content h1 {
    font-size: 1.8rem;
  }

  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .timeline-item {
    padding-left: 50px;
  }

  .timeline-dot {
    left: 11px;
  }

  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

/* Hero section mobile */
@media (max-width: 768px) {
  .hero {
    min-height: 70vh;
  }

  .hero-content {
    padding: 0 12px;
  }

  .hero-content h1 {
    font-size: 1.8rem;
    margin-bottom: 12px;
  }

  .hero-content p {
    font-size: 0.9rem;
    margin-bottom: 20px;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 10px;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
    padding: 10px 16px;
    font-size: 0.82rem;
    white-space: nowrap;
  }
}

/* CTA section mobile */
@media (max-width: 768px) {
  .cta-section h2 {
    font-size: 1.6rem;
  }

  .cta-section p {
    font-size: 0.95rem;
  }
}

/* Footer mobile */
@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .footer-social {
    justify-content: center;
  }

  .footer-links-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .footer-contact-list li {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .footer-links-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-column h4::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* Fix for iOS input zoom */
@media screen and (max-width: 768px) {
  input[type="text"],
  input[type="email"],
  input[type="tel"],
  input[type="number"],
  input[type="password"],
  textarea,
  select {
    font-size: 16px !important;
    transform: scale(1);
  }
}

/* Animation reduction for mobile performance */
@media (max-width: 768px) {
  .aos-init {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .scenario-card:hover .scenario-card-bg,
  .featured-project-card:hover .card-bg,
  .product-cat-image img:hover {
    transform: none;
  }
}

/* ============================================
   iPhone Mobile Navigation Deep Optimization
   ============================================ */

/* Mobile Menu Toggle Button Enhancement */
@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
    padding: 0;
    border-radius: 8px;
    transition: background 0.3s ease;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-toggle:active {
    background: rgba(212,175,55,0.15);
  }

  .nav-toggle span {
    width: 24px;
    height: 2.5px;
    background: #1A1A2E;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
  }


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

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
  }

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

/* Mobile Side Navigation - Professional Redesign */
@media (max-width: 900px) {
  /* Overlay backdrop */
  .nav-links::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: -1;
  }

  .nav-links.open::before {
    opacity: 1;
    visibility: visible;
  }

  /* Side menu container */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    max-width: 85vw;
    height: 1000px;
    height: 100dvh; /* Dynamic viewport height for mobile */
    background: linear-gradient(180deg, #F5F0EB 0%, #E8E4DF 100%);
    flex-direction: column;
    align-items: stretch;
    padding: 80px 0 32px;
    gap: 0;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    box-shadow: -8px 0 32px rgba(0,0,0,0.4);
    pointer-events: none;
  }

  .nav-links.open {
    right: 0;
    pointer-events: auto;
  }

  /* Menu header with close button area */
  .nav-links::after {
    content: 'MENU';
    position: absolute;
    top: 24px;
    left: 24px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: rgba(26,26,46,0.4);
  }

  /* Main menu items */
  .nav-links > a,
  .nav-links > .nav-dropdown > a {
    color: rgba(26,26,46,0.9) !important;
    padding: 18px 24px;
    font-size: 1.05rem;
    font-weight: 500;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    width: 100%;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 56px;
    transition: all 0.25s ease;
    position: relative;
    letter-spacing: 0.5px;
  }

  .nav-links > a::after,
  .nav-links > .nav-dropdown > a::after {
    display: none !important;
  }

  /* Active/Hover state with gold accent */
  .nav-links > a.active,
  .nav-links > a:hover,
  .nav-links > .nav-dropdown > a.active,
  .nav-links > .nav-dropdown:hover > a {
    color: var(--color-accent) !important;
    background: rgba(212, 175, 55, 0.08);
  }

  /* Active indicator - centered gold line */
  .nav-links > a.active::before,
  .nav-links > .nav-dropdown > a.active::before {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 8px;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
  }

  /* Dropdown arrow indicator */
  .nav-dropdown > a {
    justify-content: center;
    gap: 8px;
  }

  .nav-dropdown > a::after {
    content: '';
    display: inline-block !important;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid currentColor;
    transition: transform 0.3s ease;
    position: static !important;
    transform: none !important;
    opacity: 0.6;
  }

  .nav-dropdown.mobile-open > a::after {
    transform: rotate(180deg) !important;
  }
}

/* Secondary Menu (Mega Panel) - Optimized */
@media (max-width: 900px) {
  .mega-panel,
  .dropdown-panel {
    display: none;
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background: rgba(0,0,0,0.03);
    padding: 0;
    margin: 0;
    min-width: 0;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .nav-dropdown.mobile-open .mega-panel,
  .nav-dropdown.mobile-open .dropdown-panel {
    display: block;
    max-height: 70vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Mega panel grid layout */
  .mega-panel-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
  }

  /* Individual menu item */
  .mega-panel-link {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 24px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: all 0.2s ease;
    text-align: left;
  }

  .mega-panel-link:last-child {
    border-bottom: none;
  }

  .mega-panel-link:active {
    background: rgba(212,175,55,0.08);
  }

  /* Icon container */
  .mega-panel-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 10px;
    overflow: hidden;
    background: rgba(212,175,55,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .mega-panel-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  /* Text content */
  .mega-panel-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
  }

  .mega-panel-text strong {
    font-size: 0.95rem;
    color: rgba(26,26,46,0.95);
    font-weight: 500;
    letter-spacing: 0.3px;
    line-height: 1.3;
  }

  .mega-panel-text span {
    font-size: 0.75rem;
    color: rgba(26,26,46,0.5);
    font-weight: 400;
    letter-spacing: 0.5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* View all link */
  .mega-panel-viewall {
    padding: 16px 24px;
    border-top: 1px solid rgba(0,0,0,0.06);
    text-align: center;
  }

  .mega-panel-viewall a {
    color: var(--color-accent) !important;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 20px;
    background: rgba(212, 175, 55, 0.1);
    transition: all 0.2s ease;
  }

  .mega-panel-viewall a:active {
    background: rgba(212, 175, 55, 0.2);
  }

  /* Dropdown items (for projects) */
  .dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    color: var(--color-primary) !important;
    font-size: 0.95rem;
    transition: all 0.2s ease;
  }

  .dropdown-item:active {
    background: rgba(212,175,55,0.08);
    color: var(--color-accent) !important;
  }
}

/* Language Switcher - Mobile Optimization */
@media (max-width: 900px) {
  .lang-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    border: none;
    border-top: 1px solid rgba(0,0,0,0.08);
    padding: 20px 24px;
    margin: 16px 24px 0;
    background: transparent;
  }

  .lang-switch a {
    color: rgba(26,26,46,0.5) !important;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 10px 20px;
    min-width: 60px;
    text-align: center;
    border-radius: 20px;
    transition: all 0.25s ease;
    letter-spacing: 1px;
  }

  .lang-switch a:first-child {
    border-radius: 20px 0 0 20px;
  }

  .lang-switch a:last-child {
    border-radius: 0 20px 20px 0;
  }

  .lang-switch a:hover,
  .lang-switch a:active {
    color: rgba(26,26,46,0.8) !important;
    background: rgba(212,175,55,0.1);
  }

  /* Active language */
  .lang-switch a.active {
    color: var(--color-accent) !important;
    background: rgba(212, 175, 55, 0.15);
    font-weight: 600;
  }

  .lang-divider {
    color: rgba(26,26,46,0.2);
    font-size: 0.8rem;
    padding: 0 4px;
  }
}

/* iPhone Specific Fine-tuning */
@supports (-webkit-touch-callout: none) {
  @media (max-width: 900px) {
    .nav-links {
      padding-top: 88px; /* Extra space for notch */
    }

    .nav-links::after {
      top: 52px; /* Adjust header position */
    }

    .mega-panel-text strong {
      font-weight: 600; /* Slightly bolder for iOS */
    }

    /* Improve text rendering */
    .nav-links > a,
    .mega-panel-text strong,
    .dropdown-item {
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
  }
}

/* Smaller iPhones (SE, mini) */
@media (max-width: 375px) {
  .nav-links {
    width: 280px;
  }

  .nav-links > a,
  .nav-links > .nav-dropdown > a {
    padding: 16px 20px;
    font-size: 1rem;
    min-height: 52px;
  }

  .mega-panel-link {
    padding: 12px 20px;
    gap: 12px;
  }

  .mega-panel-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
  }

  .mega-panel-text strong {
    font-size: 0.9rem;
  }

  .mega-panel-text span {
    font-size: 0.7rem;
  }
}

/* Animation Performance */
@media (max-width: 900px) {
  .nav-links,
  .nav-links.open,
  .mega-panel,
  .dropdown-panel,
  .nav-dropdown.mobile-open .mega-panel,
  .nav-dropdown.mobile-open .dropdown-panel {
    will-change: transform, opacity;
  }

  /* Disable animations for reduced motion preference */
  @media (prefers-reduced-motion: reduce) {
    .nav-links {
      transition: none;
    }

    .mega-panel,
    .dropdown-panel {
      transition: none;
    }
  }
}

/* Print styles */
@media print {
  .navbar, .footer, .hero-buttons, .cta-section {
    display: none;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
  }

  a {
    text-decoration: underline;
  }
}


/* 三个视频区块:高度为五分之一(10vh),宽度与文字对齐 */
.about-hero-video-section {
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
  background: #F5F0EB;
}

/* Non-fullpage video sections: compact height, width aligned with text content (1200px) */
.about-hero-video-section:not(.hero-fullpage) {
  height: 10vh;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.about-hero-video-section:not(.hero-fullpage) .about-video-wrap {
  height: 10vh !important;
  max-width: 100% !important;
  left: 0 !important;
  transform: none !important;
}

/* ==== 全屏视频 平板适配(≤1024px)==== */
@media (max-width: 1024px) {
  .about-hero-video-section.hero-fullpage {
    height: 600px !important;
    min-height: 600px !important;
    max-height: 600px !important;
  }
  .about-hero-video-section.hero-fullpage .about-video-wrap {
    max-width: 100% !important;
  }
}

/* ==== 全屏视频 手机适配(≤768px)==== */
@media (max-width: 768px) {
  .about-hero-video-section.hero-fullpage {
    height: 300px !important;
    min-height: 300px !important;
    max-height: 300px !important;
  }
  .about-hero-video-section.hero-fullpage .about-video-wrap {
    max-width: 100% !important;
  }
}

/* ==== 全屏视频 小屏适配(≤480px)==== */
@media (max-width: 480px) {
  .about-hero-video-section.hero-fullpage {
    height: 220px !important;
    min-height: 220px !important;
    max-height: 220px !important;
  }
  .about-hero-video-section.hero-fullpage .about-video-wrap {
    max-width: 100% !important;
  }
}

/* ==== 平板适配(≤900px)==== */
@media (max-width: 900px) {
  .about-hero-video-section:not(.hero-fullpage) {
    max-width: 100%;
  }
}

/* ==== 手机适配(≤768px)==== */
@media (max-width: 768px) {
  .about-hero-video-section:not(.hero-fullpage) {
    max-width: 100%;
    height: 8vh;
  }
  .about-hero-video-section:not(.hero-fullpage) .about-video-wrap {
    height: 8vh !important;
  }
}

/* ==== 小屏手机(≤480px)==== */
@media (max-width: 480px) {
  .about-hero-video-section:not(.hero-fullpage) {
    max-width: 100%;
    height: 6vh;
  }
  .about-hero-video-section:not(.hero-fullpage) .about-video-wrap {
    height: 6vh !important;
  }
}

.about-hero-video-section .about-video-content {
  max-width: 1200px;
  margin: 0 auto;
  width: 90%;
}

/* 视频之间文字区块:去掉大padding,紧贴视频 */
.tight-section {
  padding-top: 12px !important;
  padding-bottom: 12px !important;
}

.tight-section .container {
  padding: 16px 40px !important;
}

.tight-section .text-left {
  margin-bottom: 16px !important;
}

.tight-section .text-left {
  margin-bottom: 16px !important;
}

/* 视频前面的section底部padding收紧 */
.section-padding:has(+ .about-hero-video-section) {
  padding-bottom: 12px !important;
}

.tight-section:has(+ .about-hero-video-section) {
  padding-bottom: 12px !important;
}

/* 视频section本身去掉多余空间 */
.about-hero-video-section {
  padding-top: 0 !important;
  padding-bottom: 0 !important;
}

.about-hero-video-section .about-video-content {
  padding: 8px 0 !important;
}

/* 视频前面的section:底部padding清零 */
.before-video {
  padding-bottom: 0 !important;
}

.before-video .container {
  padding-bottom: 0 !important;
}

/* GLOBAL OVERRIDE: No dark backgrounds anywhere */
.footer-bottom, .cta-section, .footer, .hero, .page-header,
.inner-page .navbar, .mega-panel, .dropdown-panel {
  background: #F5F0EB !important;
}

/* ---- Nav Center Title (Mobile) ---- */
.nav-center-title {
  display: none;
}

@media (max-width: 900px) {
  .navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
  }

  .nav-center-title {
    display: block;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Noto Serif TC', 'Playfair Display', serif;
    font-size: 1rem;
    font-weight: 700;
    color: #1A1A2E;
    letter-spacing: 2px;
    white-space: nowrap;
    pointer-events: none;
  }
}

@media (max-width: 375px) {
  .nav-center-title {
    font-size: 0.85rem;
    letter-spacing: 1px;
  }
}

/* ============================================
   COMPREHENSIVE IPHONE MOBILE OPTIMIZATION
   iPhone 17 Pro Max (440px) / iPhone 16 (393px) / iPhone SE (375px)
   Covers: Navigation, Hero, Content, Products, Projects, News, Contact, Footer, Lightbox, Forms
   ============================================ */

/* ---- Safe Area & Base ---- */
@supports (padding: env(safe-area-inset-bottom)) {
  .navbar {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }
  .footer {
    padding-bottom: calc(32px + env(safe-area-inset-bottom));
  }
  .footer-bottom {
    padding-bottom: calc(16px + env(safe-area-inset-bottom));
  }
  .whatsapp-float {
    bottom: calc(20px + env(safe-area-inset-bottom));
  }
  .nav-links {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }
}

/* ---- Touch Target Minimum (44px Apple HIG) ---- */
@media (max-width: 900px) {
  .nav-links > a,
  .nav-links > .nav-dropdown > a,
  .dropdown-item,
  .mega-panel-link,
  .lang-switch a {
    min-height: 48px;
    display: flex;
    align-items: center;
  }

  .btn {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
  }

  .stone-tag {
    padding: 6px 12px;
    min-height: 32px;
    display: inline-flex;
    align-items: center;
  }

  .news-filter-btn,
  .project-filter button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* ---- Navigation Bar Mobile ---- */
@media (max-width: 900px) {
  .navbar {
    height: auto;
    min-height: var(--nav-height, 70px);
    padding: 8px 16px;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
  }

  .nav-container,
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .nav-logo img {
    height: 36px !important;
  }

  .nav-logo-text strong {
    font-size: 0.8rem;
  }

  .nav-logo-text small {
    font-size: 0.55rem;
  }

  /* Side drawer safe area */
  .nav-links.open {
    padding-top: calc(80px + env(safe-area-inset-top, 0px));
  }

  /* Menu items spacing */
  .nav-links > a,
  .nav-links > .nav-dropdown > a {
    padding: 16px 20px;
    font-size: 1.05rem;
    letter-spacing: 0.3px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
  }

  .mega-panel-link {
    padding: 14px 20px;
    gap: 14px;
  }

  .mega-panel-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    border-radius: 10px;
  }

  .mega-panel-text strong {
    font-size: 0.95rem;
  }

  .mega-panel-text span {
    font-size: 0.75rem;
  }
}

/* ---- Hero Section Mobile ---- */
@media (max-width: 768px) {
  .hero {
    min-height: 60vh;
    min-height: 60dvh;
    padding-top: calc(var(--nav-height, 70px) + 20px);
  }

  .hero-content {
    padding: 0 20px;
  }

  .hero-content h1 {
    font-size: clamp(1.6rem, 7vw, 2.4rem);
    margin-bottom: 12px;
    line-height: 1.2;
  }

  .hero-content p {
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.6;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
    padding: 16px 24px;
    font-size: 0.95rem;
  }

  .scroll-indicator {
    bottom: 24px;
  }
}

@media (max-width: 375px) {
  .hero {
    min-height: 55vh;
    min-height: 55dvh;
  }

  .hero-content h1 {
    font-size: 1.5rem;
  }

  .hero-content p {
    font-size: 0.9rem;
  }
}

/* ---- Page Headers Mobile ---- */
@media (max-width: 768px) {
  .page-header {
    padding-top: calc(var(--nav-height, 70px) + 24px);
    padding-bottom: 24px;
    min-height: auto;
  }

  .page-header h1 {
    font-size: clamp(1.4rem, 6vw, 2rem);
    margin-bottom: 8px;
  }

  .page-header p {
    font-size: 0.9rem;
    line-height: 1.6;
  }

  .breadcrumb {
    font-size: 0.8rem;
    margin-top: 12px;
  }
}

/* ---- Section Padding Mobile ---- */
@media (max-width: 768px) {
  .section-padding {
    padding: 24px 0;
  }

  .inner-page .section-padding .container {
    padding: 20px 16px;
    border-radius: 8px;
  }

  h2 {
    font-size: clamp(1.4rem, 5vw, 2rem);
    margin-bottom: 12px;
  }

  h3 {
    font-size: clamp(1.1rem, 3.5vw, 1.4rem);
  }

  p {
    font-size: 0.92rem;
    line-height: 1.7;
  }

  .section-subtitle {
    font-size: 0.9rem;
    margin-bottom: 24px;
  }
}

/* ---- About Page Video Sections Mobile (非全屏视频) ---- */
@media (max-width: 768px) {
  .about-hero-video-section:not(.hero-fullpage) { height: 18vh; }
  .about-hero-video-section:not(.hero-fullpage) .about-video-wrap { height: 18vh !important; }
  .about-hero-video-section:not(.hero-fullpage) video { height: 18vh !important; }

  .tight-section .container { padding: 12px 16px !important; }
  .tight-section .text-left { margin-bottom: 8px !important; }
  .about-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .stat-number { font-size: 1.5rem; }
  .stat-label { font-size: 0.7rem; }
  .timeline-item { padding-left: 40px !important; }
  .timeline-dot { left: 8px !important; width: 16px; height: 16px; }
  .timeline-content { margin-left: 40px !important; width: calc(100% - 40px) !important; padding: 16px; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}

@media (max-width: 480px) {
  .about-hero-video-section:not(.hero-fullpage) { height: 12vh; }
  .about-hero-video-section:not(.hero-fullpage) .about-video-wrap { height: 12vh !important; }
  .about-hero-video-section:not(.hero-fullpage) video { height: 12vh !important; }
}

@media (max-width: 375px) {
  .about-hero-video-section:not(.hero-fullpage) { height: 10vh; }
  .about-hero-video-section:not(.hero-fullpage) .about-video-wrap { height: 10vh !important; }
  .about-hero-video-section:not(.hero-fullpage) video { height: 10vh !important; }
}

/* ---- Product Center Mobile ---- */
@media (max-width: 768px) {
  /* Product quick nav - scrollable chips */
  .product-quick-nav {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .product-quick-item {
    padding: 10px 6px;
    border-radius: 8px;
  }

  .product-quick-item .num {
    font-size: 1rem;
  }

  .product-quick-item .title {
    font-size: 0.72rem;
    line-height: 1.3;
  }

  .product-quick-item .desc {
    font-size: 0.65rem;
  }

  /* Series navigation bar - horizontal scroll */
  .series-nav-bar {
    top: 60px;
    padding: 8px 0;
  }

  .series-nav-scroll {
    gap: 6px;
    padding: 0 12px 8px;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
  }

  .series-nav-item {
    padding: 8px 14px;
    font-size: 0.82rem;
    scroll-snap-align: start;
    border-radius: 20px;
  }

  .sn-dot {
    width: 10px;
    height: 10px;
  }

  /* Series overview cards - 2 columns on mobile */
  .series-overview-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 20px;
  }

  .series-overview-card {
    height: auto;
    min-height: 90px;
    max-height: none;
    padding: 10px 12px;
    border-radius: 8px;
  }

  .soc-number {
    font-size: 1.3rem;
  }

  .soc-title {
    font-size: 0.78rem;
  }

  .soc-count {
    font-size: 0.68rem;
  }

  .soc-desc {
    font-size: 0.65rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* English product cards */
  .series-overview-icon {
    font-size: 1.3rem;
  }

  .series-overview-text h3 {
    font-size: 0.78rem;
  }

  .series-overview-text p {
    font-size: 0.65rem;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    display: -webkit-box;
  }

  /* Series section header - stack vertically */
  .series-section-header {
    padding: 14px 0 !important;
  }

  .series-section-header .container {
    padding: 0 16px;
  }

  .series-header {
    flex-wrap: wrap;
    gap: 8px;
  }

  .series-header-left {
    flex-wrap: wrap;
    gap: 12px;
  }

  .series-number {
    font-size: 1.4rem;
    min-width: 30px;
  }

  .series-title {
    font-size: 1rem;
  }

  .series-desc {
    font-size: 0.85rem;
    margin-bottom: 12px;
  }

  .series-desc-en {
    font-size: 0.65rem;
  }

  .series-header-image {
    width: 100%;
    height: 60px;
  }

  .series-meta {
    gap: 12px;
  }

  .meta-item {
    font-size: 0.82rem;
  }

  /* Stone cards - 2 columns */
  .stone-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .stone-card-img {
    height: 120px;
  }

  .stone-card-info {
    padding: 10px;
  }

  .stone-card-info h4 {
    font-size: 0.78rem;
  }

  .stone-card-info p {
    font-size: 0.7rem;
  }

  .stone-tags {
    gap: 4px;
  }

  .stone-tag {
    font-size: 0.6rem;
    padding: 3px 8px;
  }
}

@media (max-width: 375px) {
  .product-quick-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .series-overview-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .stone-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .stone-card-img {
    height: 100px;
  }
}

/* ---- Projects Page Mobile ---- */
@media (max-width: 768px) {
  .project-filter {
    flex-wrap: wrap;
    gap: 6px;
    padding: 0 4px;
  }

  .project-filter button {
    padding: 8px 14px;
    font-size: 0.82rem;
    flex: 0 0 auto;
    border-radius: 20px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* Project category sections */
  .product-cat-section {
    padding: 0 !important;
  }

  .inner-page .product-cat-section .container {
    padding: 16px;
    border-radius: 0;
    box-shadow: none;
  }

  .product-cat-image img {
    height: 200px;
    object-fit: cover;
  }

  .project-card-overlay {
    padding: 16px;
  }

  .project-card-overlay h4 {
    font-size: 1rem;
  }

  .project-card-overlay p {
    font-size: 0.85rem;
  }

  /* Masonry → single column */
  .projects-masonry {
    columns: 1;
  }

  .masonry-item {
    break-inside: avoid;
    margin-bottom: 16px;
  }
}

/* ---- News Page Mobile ---- */
@media (max-width: 768px) {
  .news-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .news-card {
    border-radius: 10px;
    overflow: hidden;
  }

  .news-card-img {
    height: 180px;
  }

  .news-content {
    padding: 16px;
  }

  .news-title {
    font-size: 1rem;
    line-height: 1.4;
    margin-bottom: 8px;
  }

  .news-excerpt {
    font-size: 0.85rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-meta {
    font-size: 0.75rem;
  }

  .news-filter-btn {
    padding: 8px 16px;
    font-size: 0.82rem;
  }
}

/* ---- Contact Page Mobile ---- */
@media (max-width: 768px) {
  .contact-hero-content h1 {
    font-size: 1.6rem;
  }

  .contact-info-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .contact-info-card {
    padding: 20px;
    border-radius: 10px;
  }

  .contact-form-section .container {
    padding: 16px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    font-size: 16px !important; /* Prevent iOS zoom */
    padding: 14px 16px;
    border-radius: 8px;
  }

  .form-group label {
    font-size: 0.85rem;
    margin-bottom: 6px;
  }

  /* Contact philosophy/network grids */
  .contact-philosophy-grid,
  .contact-visit-grid,
  .contact-network-grid,
  .contact-eco-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .contact-commitment-num {
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }
}

/* ---- Categories Grid Mobile ---- */
@media (max-width: 768px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .category-card {
    aspect-ratio: 3/2;
    border-radius: 8px;
  }

  .category-card-overlay {
    padding: 16px;
  }

  .category-card h3 {
    font-size: 1rem;
  }

  .category-card p {
    font-size: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
}

@media (max-width: 375px) {
  .categories-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

/* ---- About Preview (Home) Mobile ---- */
@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .about-image {
    border-radius: 10px;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
}

/* ---- Advantages Mobile ---- */
@media (max-width: 768px) {
  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .advantage-card {
    padding: 20px;
    border-radius: 10px;
  }
}

/* ---- CTA Section Mobile ---- */
@media (max-width: 768px) {
  .cta-section {
    padding: 32px 0;
  }

  .cta-section h2 {
    font-size: 1.4rem;
  }

  .cta-section p {
    font-size: 0.9rem;
  }

  .cta-section .btn {
    width: 100%;
    text-align: center;
  }
}

/* ---- Footer Mobile ---- */
@media (max-width: 768px) {
  .footer {
    padding: 32px 0 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 16px;
  }

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

  .footer-brand p {
    font-size: 0.85rem;
  }

  .footer-links-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .footer-column h4 {
    font-size: 0.95rem;
    margin-bottom: 12px;
  }

  .footer-column a {
    font-size: 0.85rem;
    padding: 4px 0;
  }

  .footer-contact-list {
    gap: 8px;
  }

  .footer-contact-list li {
    font-size: 0.85rem;
  }

  .footer-social {
    justify-content: center;
    gap: 12px;
  }

  .footer-social a {
    width: 40px;
    height: 40px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
    padding: 16px;
    font-size: 0.8rem;
  }
}

@media (max-width: 375px) {
  .footer-links-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-column h4::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* ---- Lightbox / Image Modal Mobile ---- */
@media (max-width: 768px) {
  .image-modal-content {
    padding: 0;
  }

  .image-modal-content img {
    max-width: 100vw;
    max-height: 70vh;
    max-height: 70dvh;
    object-fit: contain;
  }

  .modal-close-btn {
    width: 48px !important;
    height: 48px !important;
    font-size: 1.5rem !important;
    top: calc(env(safe-area-inset-top, 16px) + 8px) !important;
    right: 12px !important;
    background: rgba(255,255,255,0.95) !important;
    border-radius: 50% !important;
    box-shadow: 0 2px 12px rgba(0,0,0,0.2) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 2003 !important;
  }

  .modal-nav-btn {
    width: 44px !important;
    height: 44px !important;
    font-size: 1.3rem !important;
    background: rgba(255,255,255,0.9) !important;
    border-radius: 50% !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15) !important;
  }

  .modal-nav-prev {
    left: 8px !important;
  }

  .modal-nav-next {
    right: 8px !important;
  }

  .modal-counter {
    bottom: calc(env(safe-area-inset-bottom, 16px) + 16px) !important;
    font-size: 0.85rem !important;
    padding: 8px 16px !important;
    background: rgba(0,0,0,0.6) !important;
    border-radius: 20px !important;
  }
}

/* ---- WhatsApp Float Mobile ---- */
@media (max-width: 768px) {
  .whatsapp-float {
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    right: 16px;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  }

  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}

/* ---- Client Logos Mobile ---- */
@media (max-width: 768px) {
  .client-logos-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .client-logo-item {
    padding: 14px 10px;
    min-height: 56px;
    border-radius: 8px;
  }

  .client-logo-text {
    font-size: 0.8rem;
  }
}

/* ---- Surface Treatment Bar Mobile ---- */
@media (max-width: 768px) {
  .surface-treatment-bar {
    margin-top: 24px;
    padding: 16px;
    border-radius: 10px;
  }

  .surface-treatment-inner {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .st-options {
    gap: 12px;
  }

  .st-option {
    font-size: 0.82rem;
  }
}

/* ---- Trust Bar Mobile ---- */
@media (max-width: 768px) {
  .trust-bar {
    padding: 16px 0;
  }

  .trust-items {
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
  }

  .trust-item {
    font-size: 0.8rem;
    padding: 8px 14px;
  }
}

/* ---- Gallery Mobile ---- */
@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .gallery-item {
    border-radius: 6px;
    aspect-ratio: 4/3;
  }
}

/* ---- Scheme/Tech Service Mobile ---- */
@media (max-width: 768px) {
  .scheme-timeline {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .tech-service-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* ---- Modal (Product Detail) Mobile ---- */
@media (max-width: 768px) {
  .modal-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .modal {
    width: 100%;
    max-width: 100%;
    max-height: 85vh;
    max-height: 85dvh;
    border-radius: 16px 16px 0 0;
  }

  .modal-close {
    width: 36px;
    height: 36px;
    top: 12px;
    right: 12px;
  }

  .modal-image {
    border-radius: 16px 16px 0 0;
  }

  .modal-body {
    padding: 20px 16px;
  }

  .modal-body h2 {
    font-size: 1.2rem;
  }

  .modal-body p {
    font-size: 0.9rem;
  }
}

/* ---- Prevent iOS text selection & callout on UI elements ---- */
@supports (-webkit-touch-callout: none) {
  .nav-links,
  .nav-toggle,
  .btn,
  .stone-card,
  .category-card,
  .news-card,
  .series-overview-card,
  .series-nav-item,
  .project-filter button,
  .news-filter-btn {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
  }

  /* But allow text selection in content areas */
  p, h1, h2, h3, h4, h5, h6, .modal-body, .news-content, .stone-card-info {
    -webkit-user-select: auto;
    user-select: auto;
  }
}

/* ---- Smooth scroll for iOS ---- */
@supports (-webkit-overflow-scrolling: touch) {
  .nav-links,
  .series-nav-scroll,
  .mega-panel,
  .dropdown-panel,
  .modal {
    -webkit-overflow-scrolling: touch;
  }
}

/* ---- iPhone 17 Pro Max (440px) Fine-tuning ---- */
@media (max-width: 440px) and (min-width: 394px) {
  .series-overview-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .stone-cards-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .product-quick-nav {
    grid-template-columns: repeat(3, 1fr);
  }

  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  .about-hero-video-section {
    height: 15vh;
  }

  .about-hero-video-section .about-video-wrap {
    height: 15vh !important;
  }

  .about-hero-video-section video {
    height: 15vh !important;
  }
}

/* ---- iPhone SE / Small screens (≤375px) ---- */
@media (max-width: 375px) {
  :root {
    --nav-height: 60px;
  }

  .navbar {
    padding: 6px 12px;
  }

  .nav-logo img {
    height: 30px !important;
  }

  .nav-logo-text {
    display: none;
  }

  .nav-toggle {
    width: 44px;
    height: 44px;
  }

  .nav-toggle span {
    width: 20px;
  }

  .nav-links {
    width: 270px;
  }

  .hero-content h1 {
    font-size: 1.4rem;
  }

  .btn {
    padding: 12px 20px;
    font-size: 0.85rem;
  }

  .section-padding {
    padding: 20px 0;
  }

  .inner-page .section-padding .container {
    padding: 16px 12px;
  }

  .stat-number {
    font-size: 1.3rem;
  }

  .stat-label {
    font-size: 0.65rem;
  }
}

/* ---- Landscape Mode Optimization ---- */
@media (max-width: 900px) and (orientation: landscape) {
  .hero {
    min-height: 50vh;
    min-height: 50dvh;
  }

  .nav-links {
    width: 260px;
  }

  .image-modal-content img {
    max-height: 80vh;
    max-height: 80dvh;
  }
}

/* ---- Dynamic Viewport Height ---- */
@supports (height: 100dvh) {
  .hero {
    min-height: min(70vh, 70dvh);
  }

  /* 只在移动端应用nav-links的100dvh高度 */
  @media (max-width: 900px) {
    .nav-links {
      height: 100dvh;
    }
  }
}

/* ---- Prevent horizontal overflow on all mobile ---- */
@media (max-width: 900px) {
  html, body {
    overflow-x: hidden;
    width: 100%;
  }

  * {
    max-width: 100vw;
  }

  /* Fix grid overflow */
  .categories-grid,
  .stone-cards-grid,
  .series-overview-grid,
  .news-grid,
  .projects-grid,
  .footer-grid,
  .gallery-grid,
  .client-logos-grid,
  .about-stats,
  .contact-info-grid,
  .contact-philosophy-grid,
  .contact-network-grid {
    max-width: 100%;
  }

  /* Container width on mobile */
  .container {
    width: 100%;
    padding-left: 16px;
    padding-right: 16px;
    box-sizing: border-box;
  }

  /* Prevent image overflow */
  img {
    max-width: 100%;
    height: auto;
  }
}



/* ====== About Page: Strength Grid (八大核心實力) ====== */
.strength-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1200px; margin: 0 auto; }
.strength-card { background: #fff; border-radius: 12px; padding: 32px 24px; border: 1px solid #E8E0D8; box-shadow: 0 2px 8px rgba(0,0,0,0.04); transition: all 0.3s ease; }
.strength-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); transform: translateY(-4px); border-color: #D4A373; }
.strength-card-icon { font-size: 2rem; font-weight: 700; color: #D4A373; font-family: var(--font-heading); margin-bottom: 16px; }
.strength-card h4 { font-family: var(--font-heading); font-size: 1.05rem; color: var(--color-primary); margin-bottom: 12px; line-height: 1.4; }
.strength-card p { font-size: 0.88rem; color: var(--color-mid-gray); line-height: 1.75; margin: 0; }

/* ====== About Page: Team Grid (六層團隊架構) ====== */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 1200px; margin: 0 auto; }
.team-card { background: #fff; border-radius: 12px; padding: 32px 24px; border: 1px solid #E8E0D8; box-shadow: 0 2px 8px rgba(0,0,0,0.04); transition: all 0.3s ease; }
.team-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); transform: translateY(-4px); border-color: #D4A373; }
.team-card-num { font-size: 2rem; font-weight: 700; color: #D4A373; font-family: var(--font-heading); margin-bottom: 16px; }
.team-card h4 { font-family: var(--font-heading); font-size: 1.05rem; color: var(--color-primary); margin-bottom: 12px; line-height: 1.4; }
.team-card p { font-size: 0.88rem; color: var(--color-mid-gray); line-height: 1.75; margin: 0; }

/* ====== About Page: CSR Grid (四大責任支柱) ====== */
.csr-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 1200px; margin: 0 auto; }
.csr-card { background: #fff; border-radius: 12px; padding: 32px 24px; border: 1px solid #E8E0D8; box-shadow: 0 2px 8px rgba(0,0,0,0.04); transition: all 0.3s ease; }
.csr-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); transform: translateY(-4px); border-color: #D4A373; }
.csr-card-icon { font-size: 2rem; margin-bottom: 16px; }
.csr-card h4 { font-family: var(--font-heading); font-size: 1.05rem; color: var(--color-primary); margin-bottom: 12px; line-height: 1.4; }
.csr-card p { font-size: 0.88rem; color: var(--color-mid-gray); line-height: 1.75; margin: 0; }

/* ====== About Page Grid Responsive ====== */
@media (max-width: 1024px) {
  .strength-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .team-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 768px) {
  .strength-grid { grid-template-columns: 1fr; gap: 16px; }
  .team-grid { grid-template-columns: 1fr; gap: 16px; }
  .csr-grid { grid-template-columns: 1fr; gap: 16px; }
  .strength-card, .team-card, .csr-card { padding: 24px 18px; }
  .strength-card-icon, .team-card-num, .csr-card-icon { font-size: 1.6rem; }
  .strength-card h4, .team-card h4, .csr-card h4 { font-size: 0.95rem; }
  .strength-card p, .team-card p, .csr-card p { font-size: 0.85rem; }
}
@media (max-width: 480px) {
  .strength-card, .team-card, .csr-card { padding: 20px 16px; }
}



/* FIX 2026-04-30: Hero Fullpage Video Mobile Transform Bug */
/* Desktop rule sets left:50% + translateX(-50%) which breaks on mobile
   when max-width is overridden to 100% but transform is NOT reset,
   causing video to shift left by ~50% of viewport width */

@media (max-width: 768px) {
  .about-hero-video-section.hero-fullpage {
    height: 55vh !important;
    min-height: 380px !important;
    max-height: none !important;
  }
  .about-hero-video-section.hero-fullpage .about-video-wrap {
    left: 0 !important;
    transform: none !important;
    max-width: 100% !important;
    width: 100% !important;
  }
}

@media (max-width: 480px) {
  .about-hero-video-section.hero-fullpage {
    height: 45vh !important;
    min-height: 300px !important;
    max-height: none !important;
  }
  .about-hero-video-section.hero-fullpage .about-video-wrap {
    left: 0 !important;
    transform: none !important;
    max-width: 100% !important;
    width: 100% !important;
  }
}

/* Center section titles in English products page */
.inner-page .series-overview-section h2 {
  text-align: center;
}
.inner-page .series-overview-section .series-subtitle-zh {
  text-align: center;
}

/* ===== HSST Watermark ===== */
.hsst-wm {
  position: absolute;
  bottom: 6px;
  left: 6px;
  font-size: 0.58rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  background: rgba(0,0,0,0.40);
  padding: 2px 6px;
  border-radius: 3px;
  pointer-events: none;
  z-index: 8;
  white-space: nowrap;
  letter-spacing: 0.5px;
  line-height: 1.5;
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}
/* 小屏幕缩小水印 */
@media (max-width: 768px) {
  .hsst-wm {
    font-size: 0.48rem;
    padding: 1px 4px;
    bottom: 4px;
    left: 4px;
  }
}
@media (max-width: 480px) {
  .hsst-wm {
    font-size: 0.42rem;
    padding: 1px 3px;
    bottom: 3px;
    left: 3px;
  }
}