/* ========================================
   CIIP Global Supply & Demand - Common Styles
   深色工业科技风 (Dark Industrial Tech)
   Full Responsive Design
   ======================================== */

/* Tailwind CSS CDN */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* ============ CSS Variables ============ */
:root {
  /* Primary Colors */
  --gold: #D4A843;
  --gold-light: #E8C66A;
  --gold-dark: #B08930;
  --cyan: #00D4AA;
  --cyan-light: #33E0BE;
  --blue: #1A73E8;
  --blue-light: #4A9AF5;
  --purple: #6366F1;

  /* Background Colors */
  --bg-primary: #0A0E1A;
  --bg-secondary: #111827;
  --bg-tertiary: #1F2937;
  --bg-card: rgba(31, 41, 55, 0.6);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --bg-glass: rgba(17, 24, 39, 0.75);

  /* Text Colors */
  --text-primary: #FFFFFF;
  --text-secondary: #E5E7EB;
  --text-muted: #9CA3AF;
  --text-dim: #6B7280;

  /* Functional Colors */
  --success: #10B981;
  --danger: #EF4444;
  --warning: #F59E0B;
  --info: #6366F1;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow-gold: 0 0 20px rgba(212, 168, 67, 0.3);
  --shadow-glow-cyan: 0 0 20px rgba(0, 212, 170, 0.3);
  --shadow-glow-blue: 0 0 20px rgba(26, 115, 232, 0.3);
  --shadow-glow-purple: 0 0 20px rgba(99, 102, 241, 0.3);

  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Noto Sans SC', 'Montserrat', sans-serif;
  --heading-size: 48px;
  --subheading-size: 24px;
  --body-size: 16px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index layers */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 1000;
  --z-modal: 1100;
  --z-tooltip: 1200;
}

/* ============ 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);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

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

/* ============ Navigation ============ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: 0 var(--spacing-xl);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.95);
  border-bottom-color: rgba(212, 168, 67, 0.15);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.nav-logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 24px;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav-link {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--gold);
  background: rgba(212, 168, 67, 0.1);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
}

.nav-lang {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.nav-lang:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: calc(var(--z-fixed) + 10);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

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

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

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

/* ============ Dropdown Menu ============ */
/* 一级菜单容器 - 支持 hover 下拉 */
.nav-item {
  position: relative;
}

/* 当 nav-item 包含子菜单时，一级链接带箭头指示 */
.nav-item.has-dropdown > .nav-link::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid var(--text-muted);
  border-bottom: 1.5px solid var(--text-muted);
  transform: rotate(45deg) translateY(-2px);
  margin-left: 6px;
  vertical-align: middle;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.nav-item.has-dropdown:hover > .nav-link::after {
  transform: rotate(-135deg) translateY(-2px);
  border-color: var(--gold);
}

/* 二级下拉面板 */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 200px;
  background: rgba(17, 24, 39, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(212, 168, 67, 0.18);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(212, 168, 67, 0.05);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  z-index: var(--z-dropdown);
}

.nav-item.has-dropdown:hover > .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* 二级菜单项 */
.nav-dropdown-item {
  position: relative;
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.nav-dropdown-item:hover {
  background: rgba(212, 168, 67, 0.1);
  color: var(--gold);
}

/* 二级有三级子菜单时 */
.nav-dropdown-item.has-sub::after {
  content: '';
  position: absolute;
  right: 12px;
  top: 50%;
  width: 5px;
  height: 5px;
  border-right: 1.5px solid var(--text-muted);
  border-bottom: 1.5px solid var(--text-muted);
  transform: translateY(-50%) rotate(-45deg);
  transition: border-color var(--transition-fast);
}

.nav-dropdown-item.has-sub:hover::after {
  border-color: var(--gold);
}

/* 三级下拉面板 */
.nav-subdropdown {
  position: absolute;
  top: -8px;
  left: calc(100% + 6px);
  min-width: 180px;
  background: rgba(17, 24, 39, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(212, 168, 67, 0.15);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.18s ease, visibility 0.18s;
  z-index: calc(var(--z-dropdown) + 10);
}

.nav-dropdown-item.has-sub:hover > .nav-subdropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* 三级菜单项 */
.nav-subdropdown-item {
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.nav-subdropdown-item:hover {
  background: rgba(0, 212, 170, 0.1);
  color: var(--cyan);
}

/* 分隔线 */
.nav-dropdown-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.06);
  margin: 6px 8px;
}

/* 下拉菜单内小标题 */
.nav-dropdown-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  padding: 8px 14px 4px;
  opacity: 0.7;
}

/* 移动端：下拉折叠处理 */
@media (max-width: 768px) {
  .nav-dropdown,
  .nav-subdropdown {
    display: none !important;
  }
}

/* ============ Section Styles ============ */
.section {
  padding: var(--spacing-3xl) var(--spacing-xl);
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--spacing-md);
  padding: 6px 16px;
  border: 1px solid rgba(212, 168, 67, 0.3);
  border-radius: var(--radius-full);
  background: rgba(212, 168, 67, 0.05);
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--heading-size);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

.section-title-en {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
}

.section-desc {
  font-size: var(--body-size);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ============ Hero Section ============ */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px var(--spacing-xl) var(--spacing-3xl);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: var(--z-base);
}

.hero-bg-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(212, 168, 67, 0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 50%, rgba(0, 212, 170, 0.05) 0%, transparent 50%),
              radial-gradient(ellipse at 20% 80%, rgba(26, 115, 232, 0.05) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 100%;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 64px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--gold) 50%, var(--text-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title-en {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
  font-size: var(--body-size);
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

/* ============ Stats / Dashboard ============ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.stat-item {
  text-align: center;
  padding: var(--spacing-lg);
  background: rgba(31, 41, 55, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.stat-item:hover {
  background: rgba(31, 41, 55, 0.7);
  border-color: rgba(212, 168, 67, 0.15);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 42px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-unit {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
  color: var(--text-dim);
  margin-left: 4px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
}

.stat-label-en {
  font-family: var(--font-heading);
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 1px;
}

/* ============ Card Component ============ */
.card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 168, 67, 0.3), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(212, 168, 67, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow-gold);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  font-size: 24px;
}

.card-icon.gold {
  background: linear-gradient(135deg, rgba(212, 168, 67, 0.2), rgba(212, 168, 67, 0.05));
  border: 1px solid rgba(212, 168, 67, 0.2);
  color: var(--gold);
}

.card-icon.cyan {
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.2), rgba(0, 212, 170, 0.05));
  border: 1px solid rgba(0, 212, 170, 0.2);
  color: var(--cyan);
}

.card-icon.blue {
  background: linear-gradient(135deg, rgba(26, 115, 232, 0.2), rgba(26, 115, 232, 0.05));
  border: 1px solid rgba(26, 115, 232, 0.2);
  color: var(--blue);
}

.card-icon.purple {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(99, 102, 241, 0.05));
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: var(--info);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.card-title-en {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 1px;
  margin-bottom: var(--spacing-sm);
}

.card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============ Block Card ============ */
.block-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.block-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(212, 168, 67, 0.3), transparent, rgba(0, 212, 170, 0.3));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.block-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), var(--shadow-glow-gold);
}

.block-card:hover::after {
  opacity: 1;
}

.block-card-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  font-size: 32px;
}

.block-card-title {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.block-card-title-en {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
}

.block-card-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.block-card-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.block-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  color: var(--gold);
  transition: all var(--transition-fast);
}

.block-card-link:hover {
  color: var(--gold-light);
  gap: var(--spacing-md);
}

.block-card-inner-glow {
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  pointer-events: none;
}

.glow-gold { background: var(--gold); }
.glow-cyan { background: var(--cyan); }
.glow-blue { background: var(--blue); }
.glow-purple { background: var(--info); }

/* ============ Tag / Badge ============ */
.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.tag-gold {
  background: rgba(212, 168, 67, 0.15);
  color: var(--gold);
  border: 1px solid rgba(212, 168, 67, 0.25);
}

.tag-cyan {
  background: rgba(0, 212, 170, 0.15);
  color: var(--cyan);
  border: 1px solid rgba(0, 212, 170, 0.25);
}

.tag-blue {
  background: rgba(26, 115, 232, 0.15);
  color: var(--blue-light);
  border: 1px solid rgba(26, 115, 232, 0.25);
}

.tag-purple {
  background: rgba(99, 102, 241, 0.15);
  color: var(--info);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.tag-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.tag-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.tag-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

/* ============ Button ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: #0A0E1A;
  box-shadow: 0 4px 15px rgba(212, 168, 67, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  box-shadow: 0 6px 25px rgba(212, 168, 67, 0.5);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--gold);
  border: 1px solid rgba(212, 168, 67, 0.4);
}

.btn-outline:hover {
  background: rgba(212, 168, 67, 0.1);
  border-color: var(--gold);
  box-shadow: var(--shadow-glow-gold);
}

.btn-cyan {
  background: linear-gradient(135deg, var(--cyan), #00B894);
  color: #0A0E1A;
  box-shadow: 0 4px 15px rgba(0, 212, 170, 0.3);
}

.btn-cyan:hover {
  box-shadow: 0 6px 25px rgba(0, 212, 170, 0.5);
  transform: translateY(-2px);
}

/* ============ Banner ============ */
.page-banner {
  padding: 140px var(--spacing-xl) var(--spacing-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 50vh;
  min-height: 50dvh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-banner-bg {
  position: absolute;
  inset: 0;
  z-index: var(--z-base);
}

.page-banner-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  width: 100%;
}

.page-banner-title {
  font-family: var(--font-heading);
  font-size: 48px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.page-banner-title-en {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
  color: var(--text-dim);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-md);
}

.page-banner-desc {
  font-size: var(--body-size);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ============ Feature Grid ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.feature-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.feature-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

/* ============ Flow / Process ============ */
.flow-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  min-width: 140px;
  transition: all var(--transition-normal);
}

.flow-step:hover {
  border-color: rgba(212, 168, 67, 0.2);
  background: var(--bg-card-hover);
}

.flow-step-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, rgba(212, 168, 67, 0.2), rgba(212, 168, 67, 0.05));
  border: 1px solid rgba(212, 168, 67, 0.2);
  color: var(--gold);
}

.flow-step-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.flow-step-label-en {
  font-family: var(--font-heading);
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.flow-arrow {
  color: var(--gold);
  font-size: 20px;
  opacity: 0.5;
}

/* ============ Timeline ============ */
.timeline {
  position: relative;
  padding-left: var(--spacing-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(212, 168, 67, 0.1));
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-lg);
}

.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--spacing-2xl) + 2px);
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid var(--gold);
  z-index: 1;
}

.timeline-item.active .timeline-dot {
  background: var(--gold);
  box-shadow: 0 0 10px rgba(212, 168, 67, 0.5);
}

.timeline-date {
  font-family: var(--font-heading);
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 1px;
  margin-bottom: var(--spacing-xs);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
}

.timeline-content:hover {
  border-color: rgba(212, 168, 67, 0.15);
  background: var(--bg-card-hover);
}

/* ============ Data Table ============ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.data-table thead {
  background: rgba(212, 168, 67, 0.08);
}

.data-table th {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(212, 168, 67, 0.15);
}

.data-table td {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.data-table tbody tr {
  transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
  background: rgba(212, 168, 67, 0.05);
}

/* ============ Footer ============ */
.footer {
  padding: var(--spacing-3xl) var(--spacing-xl);
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.footer-content {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  max-width: 320px;
}

.footer-title {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 1px;
}

.footer-link {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--gold);
}

.footer-bottom {
  max-width: 1440px;
  margin: var(--spacing-2xl) auto 0;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

/* ============ Floating Action Button ============ */
.fab {
  position: fixed;
  bottom: var(--spacing-2xl);
  right: var(--spacing-2xl);
  z-index: var(--z-fixed);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--bg-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 4px 20px rgba(212, 168, 67, 0.4);
  transition: all var(--transition-normal);
}

.fab:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 30px rgba(212, 168, 67, 0.6);
}

/* ============ Scroll Animations ============ */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ============ Keyframe Animations ============ */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 10px rgba(212, 168, 67, 0.2); }
  50% { box-shadow: 0 0 25px rgba(212, 168, 67, 0.4); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes rotate-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes dash-flow {
  to { stroke-dashoffset: -20; }
}

/* ============ Utility ============ */
.text-gold { color: var(--gold); }
.text-cyan { color: var(--cyan); }
.text-blue { color: var(--blue-light); }
.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }

.bg-gradient-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  margin: var(--spacing-2xl) 0;
}

/* ============ Scrollbar ============ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(212, 168, 67, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(212, 168, 67, 0.5);
}

::selection {
  background: rgba(212, 168, 67, 0.3);
  color: var(--text-primary);
}

/* ========================================
   FULL RESPONSIVE DESIGN
   Desktop ≥1200px | Tablet 768-1199px | Mobile ≤767px
   ======================================== */

/* ============ Extra Large Desktop ≥1400px ============ */
@media (min-width: 1400px) {
  :root {
    --heading-size: 56px;
    --subheading-size: 28px;
  }

  .section {
    padding: var(--spacing-3xl) var(--spacing-3xl);
  }

  .hero {
    padding: 140px var(--spacing-3xl) var(--spacing-3xl);
  }

  .footer {
    padding: var(--spacing-3xl) var(--spacing-3xl);
  }
}

/* ============ Large Desktop 1200px - 1399px ============ */
@media (min-width: 1200px) and (max-width: 1399px) {
  :root {
    --heading-size: 48px;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .feature-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-content {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

/* ============ Tablet 768px - 1199px ============ */
@media (min-width: 768px) and (max-width: 1199px) {
  :root {
    --heading-size: 36px;
    --subheading-size: 20px;
  }

  /* Navigation */
  .navbar {
    padding: 0 var(--spacing-lg);
  }

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

  .nav-links {
    gap: var(--spacing-md);
  }

  .nav-link {
    padding: 6px 12px;
    font-size: 13px;
  }

  /* Hero */
  .hero {
    padding: 100px var(--spacing-lg) var(--spacing-2xl);
    min-height: auto;
  }

  .hero-title {
    font-size: 42px;
  }

  .hero-title-en {
    font-size: 16px;
    letter-spacing: 4px;
  }

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

  .stat-number {
    font-size: 36px;
  }

  /* Section */
  .section {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .section-title {
    font-size: 32px;
  }

  /* Block Cards */
  .block-card {
    padding: var(--spacing-xl);
  }

  .block-card-title {
    font-size: 24px;
  }

  .block-card-icon {
    width: 64px;
    height: 64px;
  }

  /* Feature Grids */
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Page Banner */
  .page-banner {
    padding: 120px var(--spacing-lg) var(--spacing-2xl);
    min-height: auto;
  }

  .page-banner-title {
    font-size: 36px;
  }

  /* Flow Steps */
  .flow-steps {
    gap: var(--spacing-sm);
  }

  .flow-step {
    padding: var(--spacing-md);
    min-width: 120px;
  }

  /* Footer */
  .footer {
    padding: var(--spacing-2xl) var(--spacing-lg);
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }

  .footer-brand-desc {
    max-width: 100%;
  }

  /* FAB */
  .fab {
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
  }
}

/* ============ Mobile ≤767px ============ */
@media (max-width: 767px) {
  :root {
    --heading-size: 28px;
    --subheading-size: 18px;
    --body-size: 14px;
    --spacing-lg: 20px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
  }

  /* Navigation - Mobile */
  .navbar {
    padding: 0 var(--spacing-md);
    height: 64px;
  }

  .nav-logo-text {
    font-size: 20px;
  }

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

  .nav-links {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-xl) var(--spacing-md);
    gap: var(--spacing-sm);
    overflow-y: auto;
    z-index: calc(var(--z-fixed) - 1);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 16px;
    text-align: center;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    margin-bottom: 4px;
  }

  .nav-link:hover,
  .nav-link.active {
    background: rgba(212, 168, 67, 0.15);
  }

  .nav-lang {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  /* Hero - Mobile */
  .hero {
    padding: 90px var(--spacing-md) var(--spacing-xl);
    min-height: auto;
    min-height: auto;
  }

  .hero-title {
    font-size: 32px;
    line-height: 1.2;
  }

  .hero-title-en {
    font-size: 12px;
    letter-spacing: 3px;
    margin-bottom: var(--spacing-md);
  }

  .hero-subtitle {
    font-size: 13px;
    line-height: 1.7;
  }

  /* Stats - Mobile */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
  }

  .stat-item {
    padding: var(--spacing-md);
  }

  .stat-number {
    font-size: 28px;
  }

  .stat-label {
    font-size: 12px;
  }

  .stat-label-en {
    font-size: 10px;
  }

  /* Section - Mobile */
  .section {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .section-header {
    margin-bottom: var(--spacing-xl);
  }

  .section-tag {
    font-size: 10px;
    padding: 4px 12px;
    letter-spacing: 2px;
  }

  .section-title {
    font-size: 26px;
  }

  .section-title-en {
    font-size: 14px;
    letter-spacing: 1px;
  }

  .section-desc {
    font-size: 13px;
  }

  /* Block Cards - Mobile */
  .blocks-section {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .blocks-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .block-card {
    padding: var(--spacing-lg);
  }

  .block-card-icon {
    width: 56px;
    height: 56px;
    margin-bottom: var(--spacing-md);
  }

  .block-card-icon svg {
    width: 28px;
    height: 28px;
  }

  .block-card-title {
    font-size: 22px;
  }

  .block-card-title-en {
    font-size: 12px;
    letter-spacing: 1px;
  }

  .block-card-desc {
    font-size: 13px;
    line-height: 1.6;
  }

  .block-card-features {
    gap: 6px;
  }

  /* Tags - Mobile */
  .tag {
    font-size: 10px;
    padding: 3px 8px;
  }

  /* Buttons - Mobile */
  .btn {
    padding: 10px 20px;
    font-size: 13px;
    width: 100%;
    justify-content: center;
  }

  /* Feature Grids - Mobile */
  .feature-grid,
  .feature-grid-2,
  .feature-grid-4 {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  /* Flow Steps - Mobile */
  .flow-steps {
    flex-direction: column;
  }

  .flow-step {
    width: 100%;
    min-width: unset;
    flex-direction: row;
    justify-content: flex-start;
    gap: var(--spacing-md);
    text-align: left;
  }

  .flow-step-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 0;
    flex-shrink: 0;
  }

  .flow-arrow {
    transform: rotate(90deg);
    margin: var(--spacing-sm) 0;
  }

  /* Timeline - Mobile */
  .timeline {
    padding-left: var(--spacing-xl);
  }

  .timeline-content {
    padding: var(--spacing-sm);
  }

  /* Page Banner - Mobile */
  .page-banner {
    padding: 90px var(--spacing-md) var(--spacing-xl);
    min-height: auto;
  }

  .page-banner-title {
    font-size: 28px;
  }

  .page-banner-title-en {
    font-size: 12px;
    letter-spacing: 2px;
  }

  .page-banner-desc {
    font-size: 13px;
  }

  /* Cards - Mobile */
  .card {
    padding: var(--spacing-md);
  }

  .card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
  }

  .card-title {
    font-size: 16px;
  }

  .card-desc {
    font-size: 13px;
  }

  /* Data Tables - Mobile */
  .data-table {
    font-size: 12px;
  }

  .data-table th,
  .data-table td {
    padding: 10px 8px;
  }

  /* Footer - Mobile */
  .footer {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .footer-brand-desc {
    max-width: 100%;
  }

  .footer-title {
    margin-bottom: var(--spacing-sm);
  }

  .footer-link {
    padding: 6px 0;
    font-size: 13px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
  }

  /* FAB - Mobile */
  .fab {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 48px;
    height: 48px;
    font-size: 18px;
  }

  /* Scroll Indicator - Mobile */
  .scroll-indicator {
    bottom: 20px;
  }

  .scroll-indicator span {
    font-size: 10px;
  }

  .scroll-line {
    height: 30px;
  }

  /* Animations - Mobile (reduce for performance) */
  .animate-on-scroll,
  .fade-up,
  .slide-in-left,
  .slide-in-right,
  .scale-in {
    transition-duration: 0.3s;
  }
}

/* ============ Small Mobile ≤375px ============ */
@media (max-width: 375px) {
  :root {
    --heading-size: 24px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-title-en {
    font-size: 11px;
  }

  .stat-number {
    font-size: 24px;
  }

  .block-card-title {
    font-size: 20px;
  }

  .page-banner-title {
    font-size: 24px;
  }

  .btn {
    padding: 8px 16px;
    font-size: 12px;
  }
}

/* ============ Landscape Mobile ============ */
@media (max-width: 767px) and (orientation: landscape) {
  .hero {
    padding: 80px var(--spacing-md) var(--spacing-lg);
    min-height: auto;
  }

  .hero-title {
    font-size: 28px;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-banner {
    padding: 80px var(--spacing-md) var(--spacing-lg);
  }
}

/* ============ Touch Device Optimizations ============ */
@media (hover: none) and (pointer: coarse) {
  /* Remove hover effects on touch devices */
  .card:hover,
  .block-card:hover,
  .flow-step:hover,
  .timeline-content:hover {
    transform: none;
  }

  /* Increase touch targets */
  .nav-link {
    min-height: 44px;
  }

  .btn {
    min-height: 44px;
  }

  .tag {
    padding: 6px 12px;
  }
}

/* ============ Reduced Motion ============ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ============ High Contrast Mode ============ */
@media (prefers-contrast: high) {
  :root {
    --bg-card: rgba(31, 41, 55, 0.9);
    --text-muted: #CCCCCC;
  }
}

/* ============ Print Styles ============ */
@media print {
  .navbar,
  .footer,
  .fab,
  .scroll-indicator {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section,
  .hero,
  .page-banner {
    padding: 20px;
  }
}