/* =========================================
   È«Ö± (CSS Variables)
========================================= */
:root {
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 0.75rem;
  --spacing-lg: 1rem;
  --spacing-xl: 1.5rem;
  --spacing-2xl: 2rem;
  --spacing-3xl: 3rem;
  --spacing-4xl: 4rem;
  
  --color-primary: #00d9ff;
  --color-on-primary: #000a0b;
  --color-secondary: #8a00e6;
  --color-on-secondary: #f7f9fb;
  --color-accent: #00ffc8;
  --color-on-accent: #000a0b;
  
  --color-surface: #0a0a0a;
  --color-on-surface: #e6f7fb;
  --color-on-surface-secondary: #b8eaf2;
  --color-surface-elevated: color-mix(in oklab, var(--color-surface) 92%, var(--color-secondary));
  --color-border: #222222;
  --color-outline: #00d9ff;
  
  --font-size-xs: clamp(0.65rem, 0.6rem + 0.1vw, 0.8rem);
  --font-size-sm: clamp(0.85rem, 0.8rem + 0.15vw, 0.95rem);
  --font-size-base: 1rem;
  --font-size-lg: clamp(1.05rem, 1rem + 0.6vw, 1.25rem);
  --font-size-xl: clamp(1.25rem, 1.15rem + 0.9vw, 1.5rem);
  --font-size-2xl: clamp(1.5rem, 1.35rem + 1.2vw, 1.9rem);
  --font-size-3xl: clamp(2.2rem, 1.9rem + 2.2vw, 2.8rem);
  --font-size-4xl: clamp(3rem, 2.6rem + 3vw, 4rem);
  
  --font-family-body: "Source Sans 3", system-ui, -apple-system, sans-serif;
  --font-family-heading: "Exo 2", system-ui, -apple-system, sans-serif;
  --font-weight-body: 400;
  --font-weight-medium: 600;
  --font-weight-heading: 700;
  
  --line-height-body: 1.6;
  --line-height-heading: 1.25;
  --letter-spacing-body: 0.01em;
  --letter-spacing-heading: 0.02em;
  --text-transform-heading: uppercase;
  
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-full: 9999px;
  --border-radius-control: 4px;
  
  --shadow-level-1: 0 0 8px rgba(0, 255, 200, 0.15);
  --content-max-width: 88rem;
}

/* =========================================
   ȫʽ
========================================= */
html {
  line-height: 1.15;
  font-family: var(--font-family-body);
  font-size: 1rem;
  scroll-behavior: smooth;
  background: var(--color-surface);
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden !important; 
}
body {
  margin: 0;
  padding: 0;
  font-weight: var(--font-weight-body);
  letter-spacing: var(--letter-spacing-body);
  line-height: var(--line-height-body);
  color: var(--color-on-surface);
  background: var(--color-surface);
  fill: var(--color-on-surface);
  -webkit-font-smoothing: antialiased;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden !important; 
}
* { box-sizing: border-box; }
p, li, ul, h1, h2, h3, h4, h5, h6 { margin: 0; padding: 0; }
button { background-color: transparent; border: none; cursor: pointer; padding: 0; }
a { color: inherit; text-decoration: inherit; }
ul { list-style: none; }
section { position: relative; overflow: hidden; padding: var(--spacing-4xl) 0; }

/* =========================================
   Űʽ (Typography)
========================================= */
.section-title {
  font-size: var(--font-size-3xl);
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-heading);
  line-height: var(--line-height-heading);
  letter-spacing: var(--letter-spacing-heading);
  text-transform: var(--text-transform-heading);
}
.section-subtitle {
  opacity: 0.85;
  font-size: var(--font-size-lg);
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-heading);
  line-height: var(--line-height-heading);
}
.section-content {
  font-size: var(--font-size-base);
  font-family: var(--font-family-body);
  font-weight: var(--font-weight-body);
  line-height: var(--line-height-body);
  letter-spacing: var(--letter-spacing-body);
}

/* =========================================
   ť (Buttons)
========================================= */
.btn {
  gap: var(--spacing-xs);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  box-shadow: var(--shadow-level-1);
  text-align: center;
  transition: all 0.2s ease-in-out;
  align-items: center;
  font-family: var(--font-family-body);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-body);
  user-select: none;
  white-space: nowrap;
  border-radius: var(--border-radius-control);
  justify-content: center;
  text-decoration: none;
}
.btn-primary {
  color: var(--color-on-primary);
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}
.btn-primary:hover {
  border-color: color-mix(in oklab, var(--color-primary) 90%, var(--color-surface));
  background-color: color-mix(in oklab, var(--color-primary) 90%, var(--color-surface));
}
.btn-outline {
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  background-color: var(--color-surface);
}
.btn-outline:hover {
  color: var(--color-on-primary);
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}
.btn-lg { padding: var(--spacing-lg) var(--spacing-xl); }
.btn-xl { padding: var(--spacing-xl) var(--spacing-2xl); }

/* =========================================
    (Navigation)
========================================= */
.navigation-container {
  top: 0;
  width: 100%;
  z-index: 1000;
  position: sticky;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease-in-out;
  border-bottom: 1px solid var(--color-border);
}
.navigation-wrapper {
  margin: 0 auto;
  display: flex;
  padding: 0.65rem clamp(0.75rem, 1.6vw, 2rem);
  max-width: 1680px;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
}
.navigation-brand {
  display: flex;
  align-items: center;
  margin: 0;
  height: 100%;
  flex-shrink: 0;
}
.brand-logo-text {
  font-family: 'Inter', sans-serif;
  font-size: 1.25rem; 
  font-weight: 800;
  text-transform: uppercase;
  color: #00d4ff;
  letter-spacing: 2px;
  margin: 0;
  line-height: 1;
  margin-right: clamp(0.5rem, 1vw, 1.5rem);
  display: flex;
  white-space: nowrap;
  align-items: center;
}
.navigation-desktop-menu {
  display: flex;
  flex-grow: 1;
  margin-right: clamp(0.5rem, 1.2vw, 1.5rem);
  justify-content: flex-end;
  align-items: center;
  height: 100%;
  min-width: 0;
}
.navigation-list {
  gap: clamp(0.3rem, 0.75vw, 0.95rem);
  display: flex;
  align-items: center;
}
.navigation-link {
  color: var(--color-on-surface);
  padding: 4px clamp(4px, 0.4vw, 8px);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: color 0.2s ease;
  white-space: nowrap;
  cursor: pointer;
  border-radius: var(--border-radius-sm);
}
.nav-text-en {
  font-size: clamp(0.72rem, 0.64rem + 0.2vw, 0.84rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.2;
}
.nav-text-zh {
  font-size: 0.65rem;
  opacity: 0.65;
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1;
  margin-top: 1px;
}
.navigation-link::after {
  left: 10%;
  width: 0;
  bottom: -2px;
  height: 2px;
  content: "";
  position: absolute;
  background: var(--color-primary);
  transition: width 0.3s ease;
}
.navigation-link:hover { color: var(--color-primary); }
.navigation-link:hover .nav-text-zh { opacity: 0.95; color: var(--color-primary); }
.navigation-link:hover::after { width: 80%; }

.navigation-actions { 
  display: flex; 
  align-items: center; 
  gap: clamp(6px, 0.8vw, 12px);
  flex-shrink: 0; 
}
.navigation-toggle-btn {
  color: var(--color-on-surface);
  display: none;
  padding: var(--spacing-sm);
  transition: color 0.2s ease;
}
.navigation-toggle-btn:hover { color: var(--color-primary); }

/* Desktop Dropdown Menu */
.nav-dropdown { position: relative; cursor: pointer; }
.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  padding: var(--spacing-sm) 0;
  display: flex;
  flex-direction: column;
  z-index: 2000;
}
.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-item {
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-on-surface);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all 0.2s ease;
  display: block;
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.nav-dropdown-item:hover {
  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
  color: var(--color-primary);
  padding-left: calc(var(--spacing-lg) + 5px);
}

/* Mobile Overlay Nav */
.navigation-mobile-overlay {
  inset: 0;
  display: none;
  z-index: 1100;
  position: fixed;
  background: var(--color-surface);
  min-height: 100vh;
  overflow-y: auto;
  flex-direction: column;
}
.navigation-mobile-overlay.is-active {
  display: flex;
  animation: navFadeIn 0.4s ease forwards;
}
@keyframes navFadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
.navigation-overlay-header {
  top: 0;
  display: flex;
  padding: var(--spacing-lg) var(--spacing-xl);
  z-index: 1110;
  position: sticky;
  background: var(--color-surface);
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  justify-content: space-between;
}
.navigation-overlay-content {
  gap: var(--spacing-3xl);
  display: flex;
  padding: var(--spacing-3xl) var(--spacing-xl);
  flex-grow: 1;
  flex-direction: column;
}
.navigation-close-btn {
  color: var(--color-on-surface);
  padding: var(--spacing-sm);
}
.navigation-mobile-list {
  gap: var(--spacing-xl);
  display: flex;
  flex-direction: column;
}
.navigation-mobile-link {
  color: var(--color-on-surface);
  display: block;
  font-size: var(--font-size-2xl);
  transition: transform 0.3s ease, color 0.3s ease;
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-heading);
  text-transform: uppercase;
}
.navigation-mobile-link:hover {
  color: var(--color-primary);
  transform: translateX(var(--spacing-sm));
}
.nav-lang-sub {
  opacity: 0.6;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-body);
}
.navigation-overlay-footer {
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  text-align: center;
}

/* =========================================
    / Hero  (Hero Section)
========================================= */
.hero-3d-centered {
  display: flex;
  padding: 20px 0 0 0; 
  min-height: 100vh;
  align-items: flex-start; 
  justify-content: center;
}
.hero-background { inset: 0; z-index: 1; position: absolute; }
.hero-bg-media {
  width: 100%;
  filter: grayscale(1) contrast(1.2);
  height: 100%;
  opacity: 0.4;
  object-fit: cover;
}
.hero-overlay {
  inset: 0;
  z-index: 2;
  position: absolute;
  background: radial-gradient(circle at center, transparent 0%, var(--color-surface) 90%);
}
.hero-container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  z-index: 3;
  position: relative;
  max-width: var(--content-max-width);
  text-align: center;
  padding-top: 20px;
}
.hero-badge-group { margin-bottom: var(--spacing-lg); }
.hero-badge {
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: var(--spacing-xs) var(--spacing-lg);
  font-size: var(--font-size-sm);
  background: var(--color-surface-elevated);
  border-radius: var(--border-radius-full);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.home-hero-title {
  font-size: var(--font-size-4xl);
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-heading);
  letter-spacing: var(--letter-spacing-heading);
  text-transform: var(--text-transform-heading);
  background: linear-gradient(to bottom, var(--color-on-surface), var(--color-primary));
  margin-bottom: var(--spacing-md);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.home-hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-on-surface-secondary);
  margin-bottom: var(--spacing-2xl);
}
.hero-object-viewport {
  height: 300px;
  margin: var(--spacing-2xl) 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tech-orb-container { perspective: 1000px; }
.tech-orb {
  width: 120px;
  height: 120px;
  position: relative;
  animation: orbRotate 10s linear infinite;
  transform-style: preserve-3d;
}
@keyframes orbRotate {
  from {transform: rotateX(0deg) rotateY(0deg);}
  to {transform: rotateX(360deg) rotateY(360deg);}
}
.orb-core {
  inset: 20%;
  filter: blur(2px);
  position: absolute;
  background: var(--color-primary);
  box-shadow: 0 0 40px var(--color-primary);
  border-radius: 50%;
}
.orb-ring {
  inset: 0;
  border: 2px solid var(--color-primary);
  opacity: 0.5;
  position: absolute;
  border-radius: 50%;
}
.ring-1 { transform: rotateX(45deg); }
.ring-2 { transform: rotateY(45deg); }
.ring-3 { transform: rotateZ(45deg); }
.hero-cta-group {
  gap: var(--spacing-md);
  display: flex;
  margin-bottom: var(--spacing-4xl);
  justify-content: center;
}

/* =========================================
   Ա/ɫƬ (Membership - Bento Grid)
========================================= */
.profile-container { width: 100%; margin: 0 auto; padding: 0 var(--spacing-xl); max-width: var(--content-max-width); }
.bento-grid {
  gap: var(--spacing-lg);
  margin: var(--spacing-3xl) 0;
  display: grid;
  grid-auto-rows: 200px;
  grid-template-columns: repeat(4, 1fr);
}
.bento-item {
  border: 1px solid var(--color-border);
  padding: var(--spacing-xl);
  position: relative;
  background: var(--color-surface-elevated);
  transition: all 0.3s ease;
  border-radius: var(--border-radius-xl);
}
.bento-item:hover {
  box-shadow: 0 10px 30px rgba(0, 217, 255, 0.1);
  border-color: var(--color-primary);
}
.bento-icon { color: var(--color-primary); margin-bottom: var(--spacing-lg); }
.stat-pill {
  color: var(--color-primary);
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
  margin-top: var(--spacing-sm);
  margin-right: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
}

/* =========================================
   ɾ/չʾ (Achievements)
========================================= */
.achievement-metrics { background: linear-gradient(to right, var(--color-surface), var(--color-surface-elevated)); }
.metrics-container { width: 100%; margin: 0 auto; padding: 0 var(--spacing-xl); max-width: var(--content-max-width); }

/* ޸Ϊ Grid ֣ƽ 5 ȷ */
.metrics-carousel {
  gap: var(--spacing-lg); 
  display: grid;
  grid-template-columns: repeat(5, 1fr); /* ģ5ɾͿƬһ */
  padding: var(--spacing-2xl) 0;
}

.metric-card {
  padding: var(--spacing-xl) var(--spacing-sm); /* ڱ߾࣬㹻ĺռ */
  background: var(--color-surface);
  text-align: center;
  transition: all 0.3s ease;
  border-bottom: 2px solid transparent;
  border-radius: var(--border-radius-lg);
}

.metric-card:hover { transform: translateY(-5px); border-bottom-color: var(--color-primary); }
.metric-value { color: var(--color-primary); font-size: var(--font-size-3xl); font-weight: var(--font-weight-heading); margin-bottom: var(--spacing-sm); }
.metric-label { color: var(--color-on-surface-secondary); font-size: var(--font-size-sm); font-family: var(--font-family-heading); text-transform: uppercase; line-height: 1.4; }

/* =========================================
   㼣/ʱ (Foot Steps)
========================================= */
.steps-container { width: 100%; margin: 0 auto; padding: 0 var(--spacing-xl); max-width: var(--content-max-width); }
.timeline-wrapper { margin: var(--spacing-4xl) 0; padding: var(--spacing-xl) 0; position: relative; }
.timeline-line { top: 0; left: 50%; width: 2px; bottom: 0; position: absolute; transform: translateX(-50%); background: var(--color-border); }
.timeline-event { width: 50%; position: relative; margin-bottom: var(--spacing-3xl); }
.event-left { text-align: right; padding-right: var(--spacing-3xl); }
.event-right { left: 50%; padding-left: var(--spacing-3xl); }
.event-marker { top: 20px; width: 16px; border: 4px solid var(--color-surface); height: 16px; z-index: 4; position: absolute; background: var(--color-primary); border-radius: 50%; }
.event-left .event-marker { right: -8px; }
.event-right .event-marker { left: -8px; }
.event-card { padding: var(--spacing-xl); background: var(--color-surface-elevated); transition: all 0.3s ease; border-radius: var(--border-radius-lg); }
.event-card:hover { transform: scale(1.02); background: color-mix(in srgb, var(--color-surface-elevated) 95%, white); }
.event-date { color: var(--color-primary); font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); }

/* =========================================
   㼣 &  "Load More" ťʽ 
========================================= */
.load-more-container {
  text-align: center;
  margin-top: 1rem;
  display: none; 
}
.load-more-container.is-visible {
  display: block;
}
/* ȫ۵߼ϸֻʾǰ3Ԫأӵ4ʼȫ */
#timeline-container:not(.show-all) .timeline-event:nth-child(n+5),
#pubs-container:not(.show-all) .pub-card:nth-child(n+4) {
  display: none !important;
}

/* =========================================
   ǽ (Badges History)
========================================= */
.badge-history { background: var(--color-surface-elevated); }
.badge-container { width: 100%; margin: 0 auto; padding: 0 var(--spacing-xl); max-width: var(--content-max-width); }
.badge-masonry { margin: var(--spacing-3xl) 0; columns: 3; column-gap: var(--spacing-xl); }
.badge-item { break-inside: avoid; margin-bottom: var(--spacing-xl); }
.badge-inner { border: 1px solid var(--color-border); padding: var(--spacing-xl); background: var(--color-surface); text-align: center; transition: all 0.3s ease; border-radius: var(--border-radius-lg); }
.badge-inner:hover { transform: translateY(-10px); border-color: var(--color-accent); }
.badge-icon-wrap { color: var(--color-accent); margin-bottom: var(--spacing-md); }

/* =========================================
   Լܻ״ͼ (Language)
========================================= */
.lang-container { width: 100%; margin: 0 auto; padding: 0 var(--spacing-xl); max-width: var(--content-max-width); }
.lang-grid { gap: var(--spacing-2xl); display: grid; margin-top: var(--spacing-3xl); grid-template-columns: repeat(4, 1fr); }
.lang-card { text-align: center; }
.progress-circle { width: 150px; height: 150px; margin: 0 auto var(--spacing-lg); position: relative; }
.percent-text { top: 50%; left: 50%; color: var(--color-on-surface); position: absolute; font-size: var(--font-size-xl); transform: translate(-50%, -50%); font-weight: var(--font-weight-heading); }
.progress-circle svg { transform: rotate(-90deg); }
.progress-circle circle { fill: none; stroke-width: 8; }
.progress-circle .bg { stroke: var(--color-border); }
.progress-circle .fg { stroke: var(--color-primary); transition: stroke-dashoffset 1.5s ease-out; stroke-linecap: round; stroke-dasharray: 283; stroke-dashoffset: 283; }

/* =========================================
   ѧչʾ (Publications - ORCID)
========================================= */
.publications-section { background: var(--color-surface); }
.pubs-container { width: 100%; margin: 0 auto; padding: 0 var(--spacing-xl); max-width: var(--content-max-width); }
.pubs-list { display: flex; flex-direction: column; gap: var(--spacing-lg); margin-top: var(--spacing-3xl); }
.pub-card {
  padding: var(--spacing-xl);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  transition: all 0.3s ease;
  border-left: 4px solid var(--color-primary); 
}
.pub-card:hover {
  transform: translateX(10px);
  border-color: var(--color-primary);
  box-shadow: 0 5px 15px rgba(0, 217, 255, 0.1);
}
.pub-title {
  font-size: var(--font-size-lg);
  color: var(--color-on-surface);
  font-weight: var(--font-weight-heading);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-family-heading);
}
.pub-authors { 
  color: var(--color-on-surface-secondary); 
  font-size: var(--font-size-sm); 
  margin-bottom: var(--spacing-xs); 
}
.pub-meta { 
  color: var(--color-primary); 
  font-size: var(--font-size-xs); 
  font-family: var(--font-family-heading); 
  text-transform: uppercase; 
  letter-spacing: 0.05em; 
}
.pub-link { 
  display: inline-flex; 
  align-items: center; 
  margin-top: var(--spacing-md); 
  font-size: var(--font-size-sm); 
  color: var(--color-accent); 
  text-decoration: none; 
  font-weight: var(--font-weight-medium);
}
.pub-link:hover { text-decoration: underline; }

/* ==========================================
   AIHOT ̬ʽ (AI News Section)
========================================== */
.ai-news-section {
  width: 100%;
  box-sizing: border-box;
}
.news-container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  max-width: var(--content-max-width);
}
#aihot-widget {
  background: rgba(20, 20, 25, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 30px;
  margin-top: 2rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
#aihot-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.aihot-item {
  padding-bottom: 20px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.15);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.aihot-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.aihot-item:hover {
  transform: translateX(10px);
  border-bottom-color: #00e5ff; 
}
.aihot-title {
  font-size: 1.15rem;
  font-weight: 500;
  color: #e0e0e0;
  text-decoration: none;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  line-height: 1.6;
  font-family: 'Inter', sans-serif;
}
.aihot-title:hover {
  color: #00e5ff; 
}
.aihot-title-left {
  display: flex;
  align-items: flex-start;
}
.aihot-title-left::before {
  content: ''; 
  color: #00e5ff; 
  margin-right: 12px;
  font-size: 1.2rem;
}
.aihot-date {
  font-size: 0.85rem;
  color: #666;
  white-space: nowrap;
  flex-shrink: 0; 
  margin-left: 16px;
  margin-top: 3px;
  font-family: 'Inter', sans-serif;
}

/* =========================================
   ϵ (Contact)
========================================= */
.contact-cta { display: flex; min-height: 500px; align-items: center; background-color: var(--color-surface-elevated); }
.cta-diagonal-bg { inset: 0; z-index: 1; position: absolute; background: linear-gradient(135deg, var(--color-surface) 50%, var(--color-surface-elevated) 50%); }
.cta-container { width: 100%; margin: 0 auto; display: flex; padding: 0 var(--spacing-xl); z-index: 2; position: relative; max-width: var(--content-max-width); align-items: center; }
.cta-content { flex: 1; }
.cta-form-anchor { flex: 1; display: flex; justify-content: flex-end; }
.cta-buttons { gap: var(--spacing-md); display: flex; flex-wrap: wrap; margin-top: var(--spacing-2xl); }
.tech-grid-decoration { width: 300px; height: 300px; opacity: 0.2; background-size: 20px 20px; background-image: radial-gradient(var(--color-primary) 1px, transparent 1px); }
.contact-form { display: flex; flex-direction: column; gap: 1rem; width: 100%; max-width: 100%; margin-top: 20px; position: relative; z-index: 2; }
.form-group { display: flex; flex-direction: column; text-align: left; }
.form-group label { margin-bottom: 0.5rem; font-size: 0.95rem; color: #ffffff; font-weight: 500; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 15px; border: 1px solid #444; border-radius: 6px; background-color: #1a1a1a; color: #ffffff; font-family: inherit; font-size: 1rem; transition: border-color 0.3s ease; box-sizing: border-box; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: #00d2ff; }
.form-group textarea { resize: vertical; }
.contact-form .btn { align-self: flex-start; margin-top: 10px; cursor: pointer; }

/* =========================================
   Typebot  UI ʽ (Desktop)
========================================= */
#typebot-toggle-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px; 
  height: 60px;
  border-radius: 50%;
  background: #FFFFFF; 
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
#btn-icon { width: 40px; height: 40px; object-fit: contain; }
.typebot-wrapper {
  position: fixed;
  bottom: 90px; 
  right: 20px;
  width: 380px;
  height: 560px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  z-index: 9999;
}
#typebot-box iframe.typebot-frame {
  height: calc(100% + 70px) !important;
}

/* =========================================
   ȫָС/Ķ/ض
========================================= */
.weather-widget {
  display: flex;
  align-items: center;
  gap: 7px; 
  padding: 5px 11px; 
  background: rgba(10, 10, 10, 0.65); 
  backdrop-filter: blur(10px); 
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 217, 255, 0.25); 
  border-radius: 50px; 
  color: #e6f7fb;
  font-family: 'Inter', sans-serif;
  user-select: none;
  margin-left: 0; 
  transition: all 0.3s ease;
  flex-shrink: 0; 
  white-space: nowrap;
  min-width: max-content;
}
.weather-widget:hover {
  border-color: rgba(0, 217, 255, 0.8);
  box-shadow: 0 4px 15px rgba(0, 217, 255, 0.15);
}
.widget-icon { font-size: 1.15rem; line-height: 1; flex-shrink: 0; }
.widget-info { display: flex; flex-direction: column; justify-content: center; }
.widget-time { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.05em; line-height: 1.15; }
.widget-status { font-size: 0.58rem; opacity: 0.75; text-transform: uppercase; letter-spacing: 0.08em; line-height: 1; font-weight: 600; }
.widget-temp { 
  font-size: 0.95rem; 
  font-weight: 700; 
  color: var(--color-primary); 
  margin-left: 2px; 
  padding-left: 8px; 
  border-left: 1px solid rgba(255, 255, 255, 0.2); 
  white-space: nowrap; 
  flex-shrink: 0;
}
.scroll-progress-bar {
  position: fixed;
  top: -6px; 
  left: 0;
  height: 10px; 
  background: linear-gradient(to right, #ff0000, #ff7f00, #ffff00, #00ff00, #00ffff, #0000ff, #8a00e6);
  width: 0%;
  z-index: 99999;
  filter: blur(3px);
  opacity: 0.85; 
  transition: width 0.1s ease-out; 
}
.neon-btt-btn {
  position: fixed;
  bottom: 100px; 
  right: 25px; 
  width: 55px;
  height: 55px;
  border-radius: 50%;
  background: rgba(10, 10, 10, 0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 3px solid rgba(0, 217, 255, 0.3);
  color: var(--color-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); 
  box-shadow: 0 0 10px rgba(0, 217, 255, 0.1);
}
.neon-btt-btn.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.neon-btt-btn:hover {
  background: rgba(0, 217, 255, 0.1);
  border-color: rgba(0, 217, 255, 0.9);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.4), 0 0 40px rgba(0, 217, 255, 0.2);
  color: #fff;
}
.neon-btt-btn svg { width: 22px; height: 22px; transition: transform 0.3s ease; }
.neon-btt-btn:hover svg { transform: translateY(-3px); }

/* ==========================================
   ҳն˿ (Footer Console)
========================================== */
.footer-console-container {
  width: 100%;
  text-align: center;
  padding: 40px 0 30px 0;
  clear: both;
  font-family: 'Courier New', Courier, monospace;
  background-color: transparent; 
}
.badge-group {
  margin-bottom: 15px;
}
.badge-img {
  margin: 0 4px;
  vertical-align: middle;
}
.uptime-text {
  color: #00FFFF;
  font-size: 10px;
  margin-bottom: 12px;
  letter-spacing: 1.5px;
}
.copyright-text {
  color: #d1d1d1;
  font-size: 13px;
  letter-spacing: 1px;
}
.tech-particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* ==========================================
   ȫʽ (/ - ϸ)
========================================== */
#live2d-wrapper {
    position: fixed !important;
    bottom: 0px !important;
    right: 0px !important;
    z-index: 9998 !important;
    width: 250px !important;
    height: 300px !important;
    transform: scale(0.4) !important;
    transform-origin: bottom right !important;
   
  pointer-events: auto !important; 
  margin: 0 !important;
  padding: 0 !important;
}

#live2dcanvas {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
  cursor: pointer !important;
  display: block !important;
  z-index: 1 !important;
}

#click-shield {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  z-index: 99 !important;
  cursor: pointer !important;
}

#back-to-top {
  position: fixed !important;
  bottom: 160px !important; 
  right: 45px !important;   
  left: auto !important;    
  margin: 0 !important;
  z-index: 9999 !important;
}
#typebot-box {
  display: none; 
  position: fixed !important;
  bottom: 100px !important;  
  right: 100px !important;  
  width: 380px !important;  
  height: 600px !important; 
  max-height: 80vh !important;
  z-index: 9999 !important;
  border-radius: 12px !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3) !important;
  overflow: hidden !important; 
  animation: typebotPopUp 0.3s ease-out forwards; 
}
.typebot-frame {
  width: 100% !important;
  height: 100% !important;
  border: none !important;
}
@keyframes typebotPopUp {
  0% { opacity: 0; transform: translateY(30px) scale(0.95); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* =========================================================================
   媒体查询 (Media Query) - 桌面与笔记本自适应收缩 (1141px ~ 1320px)
========================================================================= */
@media(max-width: 1320px) {
  .nav-text-zh { display: none; } /* 紧凑显示：隐藏副标中文，只保留大字英文极简紧凑 */
  .mode-switch-btn .nav-sub { display: none; } /* 屏幕紧凑时隐藏副语言，保持单行 */
  .navigation-list { gap: clamp(0.25rem, 0.5vw, 0.55rem); }
  .navigation-link { padding: 4px 5px; }
}

/* =========================================================================
   媒体查询 (Media Query) - 移动端与平板折叠断点 (1140px )
========================================================================= */
@media(max-width: 1140px) {
  .navigation-desktop-menu { display: none !important; }
  .navigation-toggle-btn { display: block !important; }
  .navigation-actions { gap: 8px; }
}

/* =========================================================================
   ýѯ (Media Query) - ƶ豸 (768px )
========================================================================= */
@media(max-width: 768px) {
  body, html { overflow-x: hidden !important; width: 100%; max-width: 100vw; } 
  
  section { padding: 2rem 1rem !important; } 
  .navigation-wrapper { justify-content: space-between; }
  
  .home-hero-title { font-size: 1.8rem !important; } 
  .home-hero-subtitle { font-size: 0.9rem; }
  .navigation-mobile-link { font-size: 1.5rem !important; }
  .nav-lang-sub { font-size: 1rem !important; }
  .section-title { font-size: 1.3rem !important; letter-spacing: 0px !important; text-align: center; } 
  
  .hero-object-viewport { height: 180px; margin: 1rem 0; }
  .hero-cta-group, .cta-buttons { display: flex; flex-direction: column; gap: 10px; width: 100%; }
  .hero-cta-group a, .hero-cta-group .btn, .cta-buttons a, .cta-buttons .btn { width: 100%; text-align: center; box-sizing: border-box; }
  
  .bento-grid { display: grid !important; grid-template-columns: 1fr !important; gap: 12px; } 
  .metrics-carousel { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 10px; } 
  .metric-card { padding: 0.8rem !important; } 
  .metric-value { font-size: 1.5rem !important; }
  .metric-label { font-size: 0.7rem !important; }
  
  .timeline-wrapper { padding-left: 15px !important; }
  .timeline-line { left: 15px !important; }
  .timeline-event { width: 100% !important; padding-left: 2rem !important; padding-right: 0 !important; left: 0 !important; text-align: left !important; margin-bottom: 1.2rem !important; }
  .timeline-event .event-marker { left: 7px !important; right: auto !important; }
  
  .badge-masonry { columns: 1 !important; } 
  .lang-grid { display: grid !important; grid-template-columns: 1fr 1fr !important; gap: 15px; } 
  
  .progress-circle { width: 70px !important; height: 70px !important; } 
  .percent-text { font-size: 1rem !important; }
  
  .cta-container { text-align: center; flex-direction: column; }
  .cta-form-anchor { display: block; width: 100% !important; max-width: 100% !important; margin: 0 auto !important; padding: 0 !important; }
  .hero-3d-centered { padding-top: 100px !important; }

  /* ֻСߴ΢ */
  .weather-widget {
    gap: 4px !important; 
    padding: 3px 6px !important; 
    margin-left: 0 !important;
  }
  .widget-icon { font-size: 0.75rem !important; }
  .widget-time { font-size: 0.65rem !important; }
  .widget-status { font-size: 0.45rem !important; }
  .widget-temp { 
    font-size: 0.7rem !important; 
    padding-left: 4px !important; 
    margin-left: 2px !important; 
  }

  /*  */
  #typebot-box {
    left: auto !important;          
    right: 5vw !important;          
    width: 90vw !important;         
    min-width: 0 !important;        
    bottom: 110px !important;      
    height: 60vh !important;        
    max-height: 450px !important;  
  }

  #typebot-box iframe {
    width: 100% !important;
    height: 100% !important;
    min-width: 0 !important;
    border: none !important;
  }

  /* ƶ */
  #live2d-wrapper {
      transform: scale(0.3) !important;
      bottom: -20px !important;
      right: -10px !important;
    }

  /* صͷŲ½ */
  #back-to-top {
    right: auto !important;
    left: 20px !important; 
    bottom: 20px !important; 
  }
}

/* =========================================================================
   媒体查询 (Media Query) - 超窄小屏手机极简适配 (480px )
========================================================================= */
@media(max-width: 480px) {
  .brand-logo-text { font-size: 1.05rem !important; margin-right: 0.3rem !important; letter-spacing: 1px !important; }
  .mode-switch-btn { padding: 4px 8px !important; font-size: 0.75rem !important; }
  .mode-switch-btn .mode-text { display: none; }
  .widget-status { display: none !important; }
  .weather-widget { padding: 3px 6px !important; }
}

/* =========================================
   ύ״̬ʾ (Form Status)
========================================= */
.form-status {
  margin-top: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  display: none;
  font-family: var(--font-family-body);
}
.form-status.success {
  color: var(--color-accent); /*  */
  display: block;
  animation: navFadeIn 0.3s ease;
}
.form-status.error {
  color: #ff4d4f; /* É« */
  display: block;
  animation: navFadeIn 0.3s ease;
}

/* =========================================
   3D 展厅模式切换胶囊按钮 (Mode Switch Pill)
========================================= */
.mode-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--color-primary);
  background: rgba(0, 217, 255, 0.1);
  color: var(--color-primary);
  text-decoration: none;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all 0.25s ease;
  white-space: nowrap;
  flex-shrink: 0;
}
.mode-switch-btn .nav-sub {
  font-size: 0.82em;
  opacity: 0.85;
}
.mode-switch-btn:hover {
  background: var(--color-primary);
  color: #000a0b;
  transform: translateY(-2px);
  box-shadow: 0 0 15px rgba(0, 217, 255, 0.4);
}