/* ===== CSS Variables & Reset ===== */
:root {
  --bg-primary: #FFFFFF;
  --bg-secondary: #FFF5F5;
  --bg-card: #FFFFFF;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-hover: rgba(255, 255, 255, 0.95);
  --border-glass: rgba(230, 0, 0, 0.08);
  --border-glass-hover: rgba(230, 0, 0, 0.18);
  --brand-red: #E60000;
  --brand-orange: #FF4D00;
  --brand-crimson: #D40000;
  --brand-light: #FF6B6B;
  --accent-pink: #FFB3B3;
  --accent-rose: #FF6B8A;
  --text-primary: #4A4A5A;
  --text-secondary: rgba(74, 74, 90, 0.6);
  --text-muted: rgba(74, 74, 90, 0.4);
  --text-on-red: #FFFFFF;
  --glow-red: 0 4px 20px rgba(230, 0, 0, 0.15);
  --glow-crimson: 0 4px 20px rgba(184, 0, 0, 0.12);
  --glow-pink: 0 4px 20px rgba(255, 179, 179, 0.2);
  --shadow-card: 0 2px 16px rgba(230, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 8px 32px rgba(230, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out-expo: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --shadow-elevate: 0 12px 40px rgba(230, 0, 0, 0.15), 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-glow-red: 0 0 24px rgba(255, 0, 0, 0.2), 0 0 8px rgba(255, 0, 0, 0.1);
  --shadow-glow-orange: 0 0 24px rgba(255, 77, 0, 0.15), 0 0 8px rgba(255, 77, 0, 0.08);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #FFF5F5; }
::-webkit-scrollbar-thumb { background: rgba(230, 0, 0, 0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(230, 0, 0, 0.4); }

/* ===== Utility: Glassmorphism ===== */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  transition: all var(--transition-medium);
}
.glass:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-hover);
}

.glass-strong {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(230, 0, 0, 0.08);
  border-radius: var(--radius-lg);
  transition: all var(--transition-medium);
}
.glass-strong:hover {
  background: rgba(255, 255, 255, 0.98);
  border-color: rgba(230, 0, 0, 0.15);
}

/* ===== Glow Border Utility ===== */
.glow-blue { box-shadow: var(--glow-red); }
.glow-purple { box-shadow: var(--glow-crimson); }
.glow-pink { box-shadow: var(--glow-pink); }

/* ===== Gradient Text ===== */
.gradient-text {
  background: linear-gradient(135deg, var(--brand-red) 0%, var(--brand-orange) 50%, var(--brand-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-blue {
  background: linear-gradient(135deg, var(--brand-red), var(--brand-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-pink {
  background: linear-gradient(135deg, #E60000, #FF6B6B);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Animation Keyframes ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 10px rgba(230, 0, 0, 0.15); }
  50% { box-shadow: 0 0 25px rgba(230, 0, 0, 0.3), 0 0 50px rgba(255, 77, 0, 0.1); }
}
@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}
@keyframes borderRotate {
  0% { --angle: 0deg; }
  100% { --angle: 360deg; }
}
@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}
@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--brand-red); }
}
@keyframes neonPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
@keyframes scanline {
  0% { top: -100%; }
  100% { top: 200%; }
}
@keyframes borderGlow {
  0%, 100% { border-color: rgba(230, 0, 0, 0.1); box-shadow: 0 2px 8px rgba(230, 0, 0, 0.05); }
  50% { border-color: rgba(230, 0, 0, 0.35); box-shadow: 0 4px 20px rgba(230, 0, 0, 0.12), 0 0 30px rgba(230, 0, 0, 0.06); }
}
@keyframes dotPulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
}
@keyframes hexFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.03; }
  50% { transform: translateY(-10px) rotate(3deg); opacity: 0.06; }
}
@keyframes dataFlow {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}
@keyframes heroGradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes ribbonFloat {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-8px) rotate(2deg); }
}

/* ===== Scroll-triggered Animation ===== */
.animate-on-scroll {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.animate-on-scroll.from-left {
  transform: translateX(0);
}
.animate-on-scroll.from-right {
  transform: translateX(0);
}
.animate-on-scroll.from-scale {
  transform: scale(1);
}
.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger children */
.stagger-children .animate-on-scroll:nth-child(1) { transition-delay: 0ms; }
.stagger-children .animate-on-scroll:nth-child(2) { transition-delay: 80ms; }
.stagger-children .animate-on-scroll:nth-child(3) { transition-delay: 160ms; }
.stagger-children .animate-on-scroll:nth-child(4) { transition-delay: 240ms; }
.stagger-children .animate-on-scroll:nth-child(5) { transition-delay: 320ms; }
.stagger-children .animate-on-scroll:nth-child(6) { transition-delay: 400ms; }
.stagger-children .animate-on-scroll:nth-child(7) { transition-delay: 480ms; }
.stagger-children .animate-on-scroll:nth-child(8) { transition-delay: 560ms; }
.stagger-children .animate-on-scroll:nth-child(9) { transition-delay: 640ms; }
.stagger-children .animate-on-scroll:nth-child(10) { transition-delay: 720ms; }
.stagger-children .animate-on-scroll:nth-child(11) { transition-delay: 800ms; }
.stagger-children .animate-on-scroll:nth-child(12) { transition-delay: 880ms; }

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-medium);
}
.navbar.scrolled {
  padding: 10px 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(230, 0, 0, 0.06);
  box-shadow: 0 1px 12px rgba(230, 0, 0, 0.06);
}
.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #2A2A3A;
}
.navbar.scrolled .nav-logo {
  color: var(--brand-red);
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand-red), var(--brand-orange));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
}
.nav-logo-img {
  height: 36px;
  width: auto;
  border-radius: 6px;
  object-fit: contain;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: #6A6A7A;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-red), var(--brand-orange));
  border-radius: 1px;
  transition: width var(--transition-medium);
}
.nav-link:hover {
  color: #E60000;
}
.navbar.scrolled .nav-link {
  color: var(--text-secondary);
}
.navbar.scrolled .nav-link:hover {
  color: var(--brand-red);
}
.nav-link:hover::after {
  width: 100%;
}
/* Active nav link for current page */
.nav-link.active {
  color: #E60000;
}
.nav-link.active::after {
  width: 100%;
}
.navbar.scrolled .nav-link.active {
  color: var(--brand-red);
}
.nav-product {
  position: relative;
}
.nav-product-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: transparent;
}
.nav-product-trigger::after {
  display: none;
}
.nav-product-menu {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  width: 260px;
  padding: 8px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid rgba(230, 0, 0, 0.08);
  box-shadow: 0 18px 45px rgba(40, 40, 40, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-fast);
}
.nav-product:hover .nav-product-menu,
.nav-product-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-product-item {
  display: block;
  padding: 11px 12px;
  border-radius: 10px;
  transition: background var(--transition-fast);
}
.nav-product-item:hover {
  background: #FFF5F5;
}
.nav-product-item strong {
  display: block;
  font-size: 13px;
  color: #2A2A3A;
  margin-bottom: 3px;
}
.nav-product-item span {
  display: block;
  font-size: 12px;
  line-height: 1.45;
  color: var(--text-secondary);
}
/* 登录按钮 - 描边样式 */
/* 登录按钮 - 深色实心风格 */
.nav-cta-btn[data-action="login"] {
  padding: 7px 22px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
  background: #282828;
  border: none;
  color: #FFFFFF;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-cta-btn[data-action="login"]:hover {
  background: #404040;
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(40, 40, 40, 0.3);
}

/* 联系我们按钮 - 纯红实心风格 */
.nav-cta-btn[href="/contact.html"],
.nav-cta-btn[href="/contact.html"] {
  padding: 7px 22px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
  background: #FF0000;
  border: none;
  color: #fff;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 12px rgba(255, 0, 0, 0.25);
}
.nav-cta-btn[href="/contact.html"]:hover,
.nav-cta-btn[href="/contact.html"]:hover {
  background: #CC0000;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 0, 0, 0.35);
}

/* 滚动后样式 - 增强对比 */
.navbar.scrolled .nav-cta-btn[data-action="login"] {
  background: #282828;
  border: none;
  color: #FFFFFF;
}
.navbar.scrolled .nav-cta-btn[data-action="login"]:hover {
  background: #404040;
  box-shadow: 0 4px 16px rgba(40, 40, 40, 0.25);
}
.navbar.scrolled .nav-cta-btn[href="/contact.html"],
.navbar.scrolled .nav-cta-btn[href="/contact.html"] {
  background: #FF0000;
  border: none;
  color: #fff;
  box-shadow: 0 2px 12px rgba(230, 0, 0, 0.3);
}
.navbar.scrolled .nav-cta-btn[href="/contact.html"]:hover,
.navbar.scrolled .nav-cta-btn[href="/contact.html"]:hover {
  background: linear-gradient(135deg, #D40000 0%, #E64500 100%);
  box-shadow: 0 6px 20px rgba(230, 0, 0, 0.4);
}
.nav-mobile-toggle {
  display: none;
  background: none;
  color: #2A2A3A;
  font-size: 24px;
  padding: 4px;
}
.navbar.scrolled .nav-mobile-toggle {
  color: var(--text-primary);
}

/* ===== Nav User Dropdown ===== */
.nav-user {
  position: relative;
}
.nav-user-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 4px 10px 4px 4px;
  border-radius: 999px;
  transition: all var(--transition-fast);
}
.nav-user-trigger:hover {
  background: rgba(230, 0, 0, 0.06);
}
.nav-user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(230, 0, 0, 0.1);
  transition: all var(--transition-fast);
}
.nav-user-trigger:hover .nav-user-avatar {
  border-color: rgba(230, 0, 0, 0.25);
}
.nav-user-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-user-chevron {
  color: var(--text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}
.nav-user:hover .nav-user-chevron {
  transform: rotate(180deg);
  color: var(--brand-red);
}

.nav-user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 170px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(230, 0, 0, 0.08);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(230, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.06);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all var(--transition-fast);
  z-index: 1000;
}
.nav-user:hover .nav-user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-user-dropdown-item {
  display: block;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.nav-user-dropdown-item:hover {
  background: rgba(230, 0, 0, 0.05);
  color: var(--brand-red);
}
.nav-user-dropdown-divider {
  height: 1px;
  background: rgba(230, 0, 0, 0.08);
  margin: 6px 12px;
}
.nav-user-logout {
  color: #D40000;
}
.nav-user-logout:hover {
  background: rgba(212, 0, 0, 0.06);
  color: #B00000;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #FFFFFF;
}
.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 50% 50%, rgba(230, 0, 0, 0.03) 0%, transparent 70%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  max-width: 900px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(230, 0, 0, 0.06);
  border: 1px solid rgba(230, 0, 0, 0.12);
  font-size: 13px;
  color: #E60000;
  font-weight: 500;
  margin-bottom: 28px;
  animation: fadeInUp 0.8s ease-out;
}
.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #E60000;
  animation: dotPulse 2s ease-in-out infinite;
}
.hero-title {
  font-size: clamp(36px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: #2A2A3A;
  animation: fadeInUp 0.8s ease-out 0.15s both;
}
.hero-title .line2 {
  display: block;
}
.hero-title .gradient-text {
  background: linear-gradient(135deg, #E60000 0%, #FF3333 50%, #E60000 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(16px, 2.2vw, 22px);
  color: #6A6A7A;
  font-weight: 400;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}
.hero-slogan {
  font-size: clamp(13px, 1.6vw, 16px);
  color: #8A8A9A;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
  line-height: 1.7;
}
.hero-cta-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.55s both;
}
.btn-primary {
  padding: 14px 40px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: #FF0000;
  color: #FFFFFF;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 20px rgba(255, 0, 0, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
  border: none;
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255, 0, 0, 0.4);
  background: #CC0000;
  color: #FFFFFF;
}
.btn-primary:hover::after {
  left: 100%;
}
.btn-primary:active {
  transform: translateY(0px) scale(0.98);
  transition-duration: 0.1s;
}
.btn-secondary {
  padding: 14px 40px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: #282828;
  color: #FFFFFF;
  border: none;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(40, 40, 40, 0.2);
}
.btn-secondary:hover {
  background: #404040;
  transform: translateY(-2px);
  color: #FFFFFF;
  box-shadow: 0 8px 28px rgba(40, 40, 40, 0.3);
}
.btn-secondary:active {
  transform: translateY(0px) scale(0.98);
  transition-duration: 0.1s;
}
.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(230, 0, 0, 0.4);
  font-size: 12px;
  animation: float 3s ease-in-out infinite;
}

/* ===== Section Common ===== */
.section {
  padding: 100px 0;
  position: relative;
}
.section-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-red);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.section-label::before,
.section-label::after {
  content: '';
  width: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-red));
}
.section-label::after {
  background: linear-gradient(90deg, var(--brand-red), transparent);
}
.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== About Section ===== */
.about-section {
  background: var(--bg-secondary);
  padding: 100px 0 80px;
  overflow: hidden;
}
.about-section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.about-header {
  text-align: center;
  margin-bottom: 56px;
}
.about-main-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-top: 12px;
}

/* 主内容区：左右布局 */
.about-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 56px;
}

/* 左侧视觉区 */
.about-visual {
  position: relative;
}
.about-visual-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15), 0 4px 16px rgba(230,0,0,0.08);
}
.about-visual-card-link {
  display: block;
  width: 100%;
  height: 100%;
}
.about-visual-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.4,0,0.2,1);
}
.about-visual-card:hover img {
  transform: scale(1.03);
  filter: brightness(1.02);
}

/* 右侧信息区 */
.about-info {
  padding: 8px 0;
}
.about-headline {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}
.about-headline-accent {
  color: var(--brand-red);
  position: relative;
}
.about-headline-accent::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-red), var(--brand-orange));
  border-radius: 2px;
  opacity: 0.4;
}
.about-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 16px;
}
.about-desc-highlight {
  color: var(--text-primary);
  font-weight: 500;
  padding: 14px 18px;
  border-left: 3px solid var(--brand-red);
  background: rgba(230, 0, 0, 0.03);
  border-radius: 0 8px 8px 0;
  margin-bottom: 28px;
}

/* 数据统计 */
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.about-stat {
  text-align: center;
  padding: 22px 12px 18px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(230, 0, 0, 0.06);
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}
.about-stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-red), var(--brand-orange));
  opacity: 0;
  transition: opacity 0.3s;
}
.about-stat:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevate);
  border-color: rgba(230, 0, 0, 0.15);
}
.about-stat:hover::before {
  opacity: 1;
}
.about-stat-num {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--brand-red), var(--brand-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.about-stat-bar {
  width: 40px;
  height: 3px;
  background: rgba(230,0,0,0.08);
  border-radius: 2px;
  margin: 0 auto;
  overflow: hidden;
}
.about-stat-bar-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--brand-red), var(--brand-orange));
  border-radius: 2px;
  transition: width 1.2s cubic-bezier(0.4,0,0.2,1) 0.5s;
}
.about-stat:nth-child(1) .about-stat-bar-fill { transition-delay: 0.5s; }
.about-stat:nth-child(2) .about-stat-bar-fill { transition-delay: 0.7s; }
.about-stat:nth-child(3) .about-stat-bar-fill { transition-delay: 0.9s; }
.about-stat.animated .about-stat-bar-fill {
  width: 100%;
}

/* 底部亮点条 */
.about-highlights {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 24px 40px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
  border: 1px solid rgba(230,0,0,0.04);
}
.about-highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 28px;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}
.about-highlight-item svg {
  color: var(--brand-red);
  flex-shrink: 0;
}
.about-highlight-divider {
  width: 1px;
  height: 24px;
  background: rgba(230,0,0,0.12);
  flex-shrink: 0;
}

/* ===== Core Business Section ===== */
/* =============================================
   Business Section - Clean & Professional
   ============================================= */
/* ===== Core Business Section ===== */
.business-section {
  position: relative;
  background: #FFFFFF;
  overflow: hidden;
}
/* Subtle dot grid background */
.business-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.business-section .section-label {
  color: #E60000;
}

/* ===== Constellation: globe + connector + cards ===== */
.business-constellation {
  position: relative;
  z-index: 1;
}

/* Globe wrapper — centered visual focal point */
.business-globe-wrap {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}
.business-globe-wrap .globe-field {
  width: 100%;
  max-width: 100%;
  height: 680px;
  position: relative;
  z-index: 2;
}
/* Glow bridge: gradient that smoothly connects globe base to card grid top */
.globe-bridge {
  position: relative;
  height: 24px;
  max-width: 800px;
  margin: -4px auto 0;
  background: radial-gradient(ellipse 60% 100% at 50% 0%,
    rgba(230, 0, 0, 0.06) 0%,
    rgba(230, 0, 0, 0.025) 40%,
    transparent 70%
  );
  pointer-events: none;
  z-index: 1;
}
/* 4 subtle vertical lines within bridge — energy threads */
.globe-bridge::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(180deg, rgba(230,0,0,0.10), transparent) no-repeat 12.5% 0 / 1px 100%,
    linear-gradient(180deg, rgba(230,0,0,0.08), transparent) no-repeat 37.5% 0 / 1px 100%,
    linear-gradient(180deg, rgba(255,77,0,0.08), transparent) no-repeat 62.5% 0 / 1px 100%,
    linear-gradient(180deg, rgba(255,77,0,0.10), transparent) no-repeat 87.5% 0 / 1px 100%;
  opacity: 0;
  transition: opacity 0.8s ease 0.3s;
}
.business-constellation.visible .globe-bridge::before {
  opacity: 1;
}

/* ===== Business Grid — Symmetric 4-Column Base ===== */
.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
  padding: 0 10px;
  align-items: stretch;
}
/* Top edge line — unifies all 4 cards as one base */
.business-grid::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 2%;
  right: 2%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(230, 0, 0, 0.08) 10%,
    rgba(230, 0, 0, 0.12) 35%,
    rgba(230, 0, 0, 0.14) 50%,
    rgba(255, 77, 0, 0.12) 65%,
    rgba(255, 77, 0, 0.08) 90%,
    transparent 100%
  );
  border-radius: 1px;
}

/* Cards — uniform height, clean and symmetric */
.business-card {
  position: relative;
  border-radius: 12px;
  background: #FFFFFF;
  border: 1px solid #F0F0F0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.45s var(--ease-out-expo),
              box-shadow 0.45s var(--ease-out-expo),
              border-color 0.4s ease;
}
/* Subtle top-glow on hover */
.business-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 20px;
  background: radial-gradient(ellipse at center top, rgba(230, 0, 0, 0.04) 0%, transparent 100%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
}
.business-card:hover::before {
  opacity: 1;
}
/* Top accent bar - gradient */
.business-card-accent {
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, #E60000, #FF4D00);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
/* Show accent on scroll reveal */
.business-card.visible .business-card-accent {
  transform: scaleX(1);
}
/* Stagger accent bar animation with card entrance */
.stagger-children .business-card:nth-child(1) .business-card-accent { transition-delay: 300ms; }
.stagger-children .business-card:nth-child(2) .business-card-accent { transition-delay: 380ms; }
.stagger-children .business-card:nth-child(3) .business-card-accent { transition-delay: 460ms; }
.stagger-children .business-card:nth-child(4) .business-card-accent { transition-delay: 540ms; }
/* Hover re-trigger if not yet visible */
.business-card:hover .business-card-accent {
  transform: scaleX(1);
}
.business-card[data-accent="orange"] .business-card-accent {
  background: linear-gradient(90deg, #FF4D00, #FF8C00);
}
/* Card body — flex-grow to equalize heights */
.business-card-body {
  padding: 24px 20px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
/* Top row: number + dash */
.business-card-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.business-card-number {
  font-size: 32px;
  font-weight: 800;
  color: rgba(0,0,0,0.04);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  transition: color 0.4s ease;
  user-select: none;
}
.business-card-dash {
  display: block;
  width: 20px;
  height: 2px;
  background: #E0E0E0;
  border-radius: 1px;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
/* Title */
.business-card-title {
  font-size: 16px;
  font-weight: 700;
  color: #1A1A1A;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
  line-height: 1.35;
  transition: color 0.3s ease;
}
/* Description */
.business-card-desc {
  font-size: 13px;
  color: #888;
  line-height: 1.7;
  margin-bottom: 0;
  flex: 1;
}
/* Tags — push to bottom */
.business-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}
.business-card-tag {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  background: transparent;
  color: #999;
  border: 1px solid #EBEBEB;
  transition: all 0.3s ease;
  cursor: default;
  white-space: nowrap;
}
/* ===== Card Hover ===== */
.business-card:hover {
  transform: translateY(-5px);
  border-color: rgba(230, 0, 0, 0.18);
  box-shadow: var(--shadow-elevate);
}
.business-card[data-accent="orange"]:hover {
  border-color: rgba(255, 77, 0, 0.18);
  box-shadow: var(--shadow-glow-orange);
}
.business-card:hover .business-card-accent {
  transform: scaleX(1);
}
.business-card:hover .business-card-number {
  color: rgba(230, 0, 0, 0.12);
}
.business-card:hover .business-card-dash {
  width: 36px;
  background: #E60000;
}
.business-card[data-accent="orange"]:hover .business-card-dash {
  background: #FF4D00;
}
.business-card:hover .business-card-title {
  color: #E60000;
}
.business-card[data-accent="orange"]:hover .business-card-title {
  color: #FF4D00;
}
.business-card:hover .business-card-tag {
  border-color: rgba(230, 0, 0, 0.25);
  color: #E60000;
  background: rgba(230, 0, 0, 0.03);
}
.business-card[data-accent="orange"]:hover .business-card-tag {
  border-color: rgba(255, 77, 0, 0.25);
  color: #FF4D00;
  background: rgba(255, 77, 0, 0.03);
}

/* Capability Flow - red dot separator */
.capability-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 20px 0;
  margin-top: 0;
  position: relative;
  z-index: 1;
}
.capability-flow-item {
  font-size: 13px;
  font-weight: 500;
  color: #AAA;
  letter-spacing: 0.03em;
  padding: 4px 2px;
  transition: color 0.3s ease;
  cursor: default;
}
.capability-flow-dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #D0D0D0;
  margin: 0 16px;
  vertical-align: middle;
  transition: background 0.3s ease;
}
.capability-flow-item:hover {
  color: #E60000;
}
.capability-flow-item:hover + .capability-flow-dot {
  background: #E60000;
}

/* ===== Business Cooperation Subsection ===== */
.business-coop {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid rgba(0,0,0,0.06);
}
.business-coop-header {
  text-align: center;
  margin-bottom: 36px;
}
.business-coop-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #E60000;
  margin-bottom: 8px;
}
.business-coop-title {
  font-size: 28px;
  font-weight: 700;
  color: #1a1a1a;
  margin: 0 0 8px;
}
.business-coop-line {
  display: block;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, #E60000, #FF4D00);
  margin: 12px auto;
  border-radius: 2px;
}
.business-coop-desc {
  font-size: 15px;
  color: #777;
  margin: 0;
}

/* ===== Business Map Section ===== */
.map-section {
  background: #F7F5F2;
  position: relative;
  overflow: hidden;
}
/* Subtle radial background glow */
.map-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(230, 0, 0, 0.03) 0%, transparent 70%);
  pointer-events: none;
}
.map-section .section-label {
  color: #E60000;
}
.map-section .section-title {
  color: #1a1a2e;
}
.map-section .section-desc {
  color: #888;
}

/* ===== Globe Field (Canvas 3D) ===== */
.globe-field {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  overflow: hidden;
}
#globeCanvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}
#globeCanvas:active {
  cursor: grabbing;
}
.globe-hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  color: rgba(0,0,0,0.22);
  letter-spacing: 2px;
  pointer-events: none;
  user-select: none;
}
  user-select: none;
}

/* ===== Team Section ===== */
.team-section {
  position: relative;
}
.team-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 1px 1px, rgba(230, 0, 0, 0.03) 1px, transparent 0);
  background-size: 32px 32px;
  pointer-events: none;
}

/* ===== Team Flip Card Grid ===== */
.team-flip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  max-width: 1100px;
  margin: 0 auto;
}

/* ===== Team Flip Card ===== */
.team-flip-card {
  perspective: 1000px;
  height: 420px;
  cursor: pointer;
}
.team-flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}
.team-flip-card:hover .team-flip-inner {
  transform: rotateY(180deg);
}

/* ===== Front Face ===== */
.team-flip-front {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-lg);
  background: #FFFFFF;
  border: 1px solid rgba(230, 0, 0, 0.06);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05), 0 1px 4px rgba(0, 0, 0, 0.03);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-medium);
}
.team-flip-card:hover .team-flip-front {
  box-shadow: 0 8px 32px rgba(230, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Photo area */
.team-flip-photo {
  width: 100%;
  height: 72%;
  overflow: hidden;
  background: linear-gradient(135deg, #E8EDF2 0%, #D5DCE6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.team-flip-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

/* Info area */
.team-flip-info {
  padding: 16px 20px 20px;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.team-flip-info h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.team-flip-role {
  font-size: 13px;
  color: var(--brand-red);
  font-weight: 600;
  position: relative;
  padding-bottom: 8px;
}
.team-flip-role::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--brand-red);
  border-radius: 1px;
}

/* ===== Back Face ===== */
.team-flip-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: rotateY(180deg);
  border-radius: var(--radius-lg);
  background: #FFFFFF;
  border: 1px solid rgba(230, 0, 0, 0.1);
  box-shadow: 0 8px 32px rgba(230, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.05);
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-top: 3px solid var(--brand-red);
  overflow: hidden;
}
.team-flip-back-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.team-flip-back-role {
  font-size: 13px;
  color: var(--brand-red);
  font-weight: 600;
  margin-bottom: 14px;
}
.team-flip-back-divider {
  width: 36px;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-red), var(--brand-orange));
  border-radius: 1px;
  margin-bottom: 16px;
}
.team-flip-back-bio {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
  flex: 1;
}
.team-flip-back-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.team-flip-tag {
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  background: var(--brand-red);
  color: #FFFFFF;
  letter-spacing: 0.02em;
}

/* Hover hint on front */
.team-flip-front::after {
  content: '';
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(230, 0, 0, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-medium);
  background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M2 8a6 6 0 0 1 6-6v2a4 4 0 0 0-4 4H2z' fill='%23E60000' opacity='0.5'/%3E%3Cpath d='M14 8a6 6 0 0 1-6 6v-2a4 4 0 0 0 4-4h2z' fill='%23E60000' opacity='0.5'/%3E%3C/svg%3E");
  background-size: 16px 16px;
  background-repeat: no-repeat;
  background-position: center;
}
.team-flip-card:hover .team-flip-front::after {
  opacity: 1;
}

/* ===== Cases / Works Section ===== */
.cases-section {
  background: var(--bg-secondary);
  position: relative;
}
.cases-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(230, 0, 0, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

/* ── Tab Bar ── */
.case-tabs {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 52px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}
.case-tab {
  padding: 10px 26px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0,0,0,0.06);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}
.case-tab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(230,0,0,0.08), rgba(255,77,0,0.05));
  opacity: 0;
  transition: opacity 0.35s;
}
.case-tab-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #CCC;
  transition: all 0.35s;
  position: relative;
  z-index: 1;
}
.case-tab span {
  position: relative;
  z-index: 1;
}
.case-tab:hover {
  border-color: rgba(230,0,0,0.2);
  color: var(--text-primary);
  transform: translateY(-1px);
}
.case-tab:hover .case-tab-dot {
  background: var(--brand-red);
}
.case-tab:hover::before {
  opacity: 1;
}
.case-tab.active {
  background: linear-gradient(135deg, #E60000, #C00000);
  border-color: transparent;
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(230,0,0,0.25);
  transform: translateY(-1px);
}
.case-tab.active .case-tab-dot {
  background: #FFFFFF;
}
.case-tab.active::before {
  opacity: 0;
}

/* ── Tab Content ── */
.case-content {
  display: none;
}
.case-content.active {
  display: block;
  animation: caseFadeIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes caseFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Card Grid ── */
.case-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 2;
}
.cases-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* ── Academic Achievements ── */
.ac-hero{padding:80px 0 64px;background:#FAFAFA;color:#282828;position:relative}
.ac-hero::before{content:'';position:absolute;inset:0;background-image:radial-gradient(circle,#ccc 0.5px,transparent 0.5px);background-size:32px 32px;opacity:0.15;pointer-events:none}
.ac-hero-inner{max-width:1200px;margin:0 auto;display:flex;gap:64px;align-items:center;padding:0 20px;position:relative;z-index:1}
.ac-hero-text{flex:1;min-width:0}
.ac-hero-label{display:inline-block;font-size:11px;letter-spacing:2.5px;text-transform:uppercase;color:#E60012;margin-bottom:20px;font-weight:500;border:1px solid #E60012;border-radius:4px;padding:3px 10px}
.ac-hero-title{font-size:48px;font-weight:700;margin:0 0 16px;line-height:1.15;color:#282828;letter-spacing:-0.5px}
.ac-hero-subtitle{font-size:20px;color:#3A3A3A;margin:0 0 12px;font-weight:400;line-height:1.5}
.ac-hero-desc{font-size:15px;color:#666;margin:0 0 32px;line-height:1.7}
.ac-hero-metrics{display:flex;align-items:center;gap:0}
.ac-metric{display:flex;align-items:baseline;gap:6px}
.ac-metric-num{font-size:28px;font-weight:700;color:#E60012;line-height:1;font-family:'Helvetica Neue',Arial,sans-serif}
.ac-metric-label{font-size:13px;color:#666;white-space:nowrap}
.ac-metric-divider{width:1px;height:20px;background:#E5E5E5;margin:0 20px}
.ac-hero-visual{flex:0 0 480px;display:flex;align-items:center;justify-content:center}
/* Orbit Map */
/* Research Story Cover */
/* ---- 学术成果 Hero 右侧封面 ---- */
/* === Research Atlas Panel === */
.ac-atlas-panel{background:#FFFFFF;border-radius:8px;border:1px solid #E5E5E5;box-shadow:0 2px 16px rgba(0,0,0,0.04);padding:28px 32px 24px;max-width:480px;width:100%;transition:border-color .35s ease,box-shadow .35s ease}
.ac-atlas-panel:hover{border-color:rgba(230,0,18,0.22);box-shadow:0 4px 24px rgba(230,0,18,0.05)}
.ac-atlas-header{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.ac-atlas-header-title{font-size:15px;font-weight:700;color:#282828;letter-spacing:0.3px}
.ac-atlas-header-sub{font-size:11px;color:#999;font-weight:400}
.ac-atlas-header-status{margin-left:auto;display:flex;align-items:center;gap:5px}
.ac-atlas-status-dot{width:6px;height:6px;border-radius:50%;background:#E60012;box-shadow:0 0 6px rgba(230,0,18,0.4)}
.ac-atlas-status-text{font-size:10px;color:#999}
.ac-atlas-body{position:relative;height:300px;margin-bottom:18px}
.ac-atlas-lines{position:absolute;inset:0;width:100%;height:100%}
.ac-atlas-line{transition:stroke .22s ease,stroke-width .22s ease}
.ac-atlas-line.ac-atlas-line--active{stroke:#E60012;stroke-width:1.6}
/* AI Core center node */
.ac-atlas-core{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:80px;height:80px;background:#282828;border-radius:50%;display:flex;align-items:center;justify-content:center;z-index:3;transition:transform .24s ease}
.ac-atlas-panel:hover .ac-atlas-core{transform:translate(-50%,-50%) scale(1.03)}
.ac-atlas-core-ring{position:absolute;inset:-4px;border-radius:50%;border:1.5px solid #E60012;opacity:0.5;transition:opacity .24s}
.ac-atlas-panel:hover .ac-atlas-core-ring{opacity:0.8}
.ac-atlas-core-label{color:#FFF;font-size:14px;font-weight:500;letter-spacing:0.5px}
.ac-atlas-core-label b{font-size:18px;font-weight:700}
/* Domain nodes */
.ac-atlas-domain{position:absolute;display:flex;align-items:center;gap:6px;background:#FFFFFF;border:1px solid #E5E5E5;border-radius:8px;padding:8px 14px 8px 10px;cursor:pointer;transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;z-index:2}
.ac-atlas-domain:hover,.ac-atlas-domain--active{background:#FFF1F1;border-color:#E60012;box-shadow:0 2px 8px rgba(230,0,18,0.08)}
.ac-atlas-domain:hover .ac-atlas-domain-text,.ac-atlas-domain--active .ac-atlas-domain-text{color:#E60012}
.ac-atlas-domain-icon{display:flex;color:#282828;transition:color .22s}
.ac-atlas-domain:hover .ac-atlas-domain-icon,.ac-atlas-domain--active .ac-atlas-domain-icon{color:#E60012}
.ac-atlas-domain-text{font-size:13px;font-weight:500;color:#282828;white-space:nowrap;transition:color .22s}
/* Bottom outputs */
.ac-atlas-outputs{border-top:1px solid #E5E5E5;padding-top:14px}
.ac-atlas-outputs-label{font-size:10px;color:#999;letter-spacing:1px;text-transform:uppercase;margin-bottom:10px;font-weight:500}
.ac-atlas-tags{display:flex;flex-wrap:wrap;gap:6px}
.ac-atlas-tag{font-size:11px;color:#666;background:#F5F5F5;padding:4px 10px;border-radius:100px;transition:background .22s ease,color .22s ease}
.ac-atlas-tag--active{background:#FFF1F1;color:#E60012}
.ac-atlas-tag:hover{background:#FFF1F1;color:#E60012}
@media(max-width:1024px){.ac-atlas-panel{max-width:400px}.ac-atlas-body{height:260px}.ac-atlas-core{width:66px;height:66px}.ac-atlas-core-label{font-size:12px}.ac-atlas-core-label b{font-size:15px}}
@media(max-width:768px){.ac-atlas-panel{max-width:100%}.ac-atlas-body{height:280px}.ac-atlas-domain{padding:6px 10px 6px 8px}.ac-atlas-domain-text{font-size:12px}}

/* Domain Map */
.ac-domain{max-width:1200px;margin:0 auto;padding:64px 20px}
.ac-section-title{font-size:28px;font-weight:700;color:#282828;margin:0 0 32px;text-align:center}
.ac-domain-nav{display:flex;gap:0;border-bottom:1px solid #E5E5E5;margin-bottom:40px;justify-content:center}
.ac-domain-btn{padding:12px 28px;font-size:15px;color:#666;background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:all .25s;font-weight:500}
.ac-domain-btn:hover{color:#282828}
.ac-domain-btn.active{color:#E60012;border-bottom-color:#E60012}
.ac-domain-content{display:flex;gap:40px;align-items:flex-start;min-height:200px}
.ac-domain-subtitle{font-size:15px;color:#666;line-height:1.7;margin:0 0 32px;text-align:left;max-width:640px}
.ac-domain-col{flex:1;min-width:0}
.ac-domain-col--overview{flex:1.1}
.ac-domain-col--capabilities{flex:1}
.ac-domain-col--outcomes{flex:1.2}
.ac-domain-title{font-size:24px;font-weight:700;color:#282828;margin:0 0 14px}
.ac-domain-desc{font-size:15px;color:#666;line-height:1.75;margin:0 0 20px}
.ac-domain-scenarios{display:flex;flex-wrap:wrap;gap:8px}
.ac-domain-scenario-tag{font-size:12px;color:#666;background:#F3F3F3;padding:5px 12px;border-radius:100px;border:1px solid #E5E5E5;transition:all .2s}
.ac-domain-col-label{font-size:12px;color:#999;text-transform:uppercase;letter-spacing:1px;margin:0 0 16px;font-weight:500}
.ac-domain-cap-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
.ac-domain-cap-item{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#282828;line-height:1.6}
.ac-domain-cap-dot{width:6px;height:6px;border-radius:50%;background:#E60012;flex-shrink:0;margin-top:7px}
.ac-domain-outcome{padding:16px;background:#FFFFFF;border:1px solid #E5E5E5;border-radius:6px;margin-bottom:12px;transition:all .2s}
.ac-domain-outcome:hover{border-color:rgba(230,0,18,.35);box-shadow:0 2px 8px rgba(230,0,18,.06)}
.ac-domain-outcome-name{font-size:15px;font-weight:600;color:#282828;margin-bottom:6px}
.ac-domain-outcome-brief{font-size:13px;color:#666;line-height:1.6;margin-bottom:10px}
.ac-domain-outcome-tags{display:flex;flex-wrap:wrap;gap:6px}
.ac-domain-outcome-tag{font-size:11px;color:#999;background:#F3F3F3;padding:3px 8px;border-radius:4px}

/* Breakthroughs */
.ac-breakthroughs{background:#FAFAFA;padding:64px 20px}
.ac-bt-item{max-width:1200px;margin:0 auto 48px;display:flex;gap:48px;align-items:stretch}
.ac-bt-item--reverse{flex-direction:row-reverse}
.ac-bt-visual{flex:0 0 420px;display:flex;align-items:center}
.ac-bt-info{flex:1;display:flex;flex-direction:column;justify-content:center;padding:24px 0}
.ac-bt-num{font-size:72px;font-weight:800;color:rgba(255,0,0,0.1);line-height:1;margin-bottom:-8px}
.ac-bt-title{font-size:28px;font-weight:700;color:#282828;margin:0 0 8px}
.ac-bt-partner{font-size:14px;color:#FF0000;margin:0 0 16px;font-weight:500}
.ac-bt-desc{font-size:15px;color:#666;line-height:1.7;margin:0 0 20px}
.ac-bt-tags{display:flex;gap:8px;flex-wrap:wrap}
.ac-bt-tags span{font-size:12px;padding:4px 14px;border-radius:100px;border:1px solid #E5E5E5;color:#666;transition:all .25s}
.ac-bt-tags span:hover{border-color:#FF0000;color:#FF0000;background:rgba(255,0,0,0.05)}

/* Research Path */
.ac-path{max-width:1200px;margin:0 auto;padding:64px 20px}
.ac-path-flow{display:flex;align-items:center;justify-content:center;gap:0;margin-bottom:48px}
.ac-path-node{display:flex;flex-direction:column;align-items:center;gap:8px}
.ac-path-num{width:36px;height:36px;border-radius:50%;background:#FF0000;color:#fff;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ac-path-label{font-size:13px;color:#666;text-align:center;line-height:1.4}
.ac-path-line{width:48px;height:2px;background:#E5E5E5;flex-shrink:0;margin-bottom:20px}
.ac-path-results{display:flex;flex-direction:column;gap:12px;max-width:720px;margin:0 auto}
.ac-path-domain{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:8px;transition:background .2s}
.ac-path-domain:hover{background:#F3F3F3}
.ac-path-domain-dot{width:8px;height:8px;border-radius:50%;background:#FF0000;flex-shrink:0}
.ac-path-domain-name{font-size:14px;font-weight:600;color:#282828;min-width:60px}
.ac-path-domain-item{font-size:14px;color:#666}


/* CTA */
.ac-cta{background:#282828;padding:36px 20px;text-align:center}
.ac-cta-title{font-size:22px;font-weight:600;color:#fff;margin:0 0 8px}
.ac-cta-subtitle{font-size:14px;color:#999;margin:0 0 20px;max-width:640px;margin-left:auto;margin-right:auto;line-height:1.5}
.ac-cta-btns{display:flex;gap:12px;justify-content:center}
.ac-cta-btn{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 28px;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;text-decoration:none;transition:all .25s}
.ac-cta-btn--primary{background:#fff;color:#282828;border:none}
.ac-cta-btn--primary:hover{background:#e0e0e0}
.ac-cta-btn--secondary{background:transparent;color:#fff;border:1px solid #555}
.ac-cta-btn--secondary:hover{border-color:#fff;color:#fff}

/* ── Cooperation Showcase (inside Cases tab) ── */
/* ── Coop Cinema Layout ── */
.coop-cinema-header {
  text-align: center;
  margin-bottom: 48px;
}
.coop-cinema-title {
  font-size: 32px;
  font-weight: 700;
  color: #282828;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.coop-cinema-sub {
  font-size: 17px;
  color: #666666;
  margin: 0;
}
.coop-cinema-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.coop-cinema-card {
  background: #fff;
  border: 1px solid #E5E5E5;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  cursor: pointer;
}
.coop-cinema-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  border-color: #FF0000;
}
.coop-cinema-thumb {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  overflow: hidden;
}
.coop-cinema-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.coop-cinema-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.08) 0%, rgba(0,0,0,0.22) 100%);
  pointer-events: none;
}
.coop-cinema-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(0,0,0,0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  z-index: 2;
  border: none;
  padding: 0;
}
.coop-cinema-play svg {
  width: 22px;
  height: 22px;
  fill: #fff;
  margin-left: 2px;
}
.coop-cinema-card:hover .coop-cinema-play {
  background: #FF0000;
  transform: translate(-50%, -50%) scale(1.06);
}
.coop-cinema-info {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.coop-cinema-meta {
  flex: 1;
}
.coop-cinema-info h4 {
  font-size: 17px;
  font-weight: 600;
  color: #282828;
  margin: 0 0 4px;
}
.coop-cinema-info p {
  font-size: 14px;
  color: #666666;
  margin: 0;
}
.coop-cinema-tag {
  display: inline-block;
  background: #FF0000;
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 4px;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  margin-left: 16px;
}

/* ── Video Lightbox ── */
.video-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
}
.video-lightbox.active {
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.85);
  animation: lightboxFadeIn 0.25s ease;
}
.video-lightbox-inner {
  position: relative;
  width: 90vw;
  max-width: 960px;
  animation: lightboxScaleIn 0.3s ease;
}
.video-lightbox-close {
  position: absolute;
  top: -44px;
  right: 0;
  width: 36px;
  height: 36px;
  border: none;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  padding: 0;
}
.video-lightbox-close svg {
  width: 20px;
  height: 20px;
}
.video-lightbox-close:hover {
  background: rgba(255,255,255,0.3);
}
.video-lightbox-inner video {
  width: 100%;
  border-radius: 8px;
  background: #000;
  outline: none;
  max-height: 80vh;
}
@keyframes lightboxFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes lightboxScaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

/* ── Case Card ── */
.case-card {
  background: #FFFFFF;
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,0.05);
  overflow: hidden;
  cursor: default;
  transition: all 0.45s var(--ease-out-expo);
  position: relative;
  opacity: 0;
  transform: translateY(30px);
  transform-style: preserve-3d;
  perspective: 800px;
  padding: 28px 24px 24px;
}
.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-red), var(--brand-orange));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out-expo);
  border-radius: 16px 16px 0 0;
}
.case-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.case-card:hover {
  border-color: rgba(230,0,0,0.12);
  box-shadow: 0 8px 28px rgba(230,0,0,0.08);
}
.case-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.case-card-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(230,0,0,0.08);
  color: var(--brand-red);
}
.case-card-badge--orange {
  background: rgba(255,77,0,0.08);
  color: #FF4D00;
}
.case-card-badge--blue {
  background: rgba(59,130,246,0.08);
  color: #3B82F6;
}
.case-card-badge--green {
  background: rgba(34,197,94,0.08);
  color: #22C55E;
}
.case-card-year {
  font-size: 12px;
  color: var(--text-muted);
}
.case-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}
.case-card > p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}
.case-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.case-card-tags span {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid #EBEBEB;
  color: #999;
  transition: all 0.3s ease;
}
.case-card:hover .case-card-tags span {
  border-color: rgba(230,0,0,0.2);
  color: var(--brand-red);
  background: rgba(230,0,0,0.03);
}

/* ── Product Introduction Page ── */

/* ── Shared ── */
.pi-section-header {
  text-align: center;
  margin-bottom: 56px;
}
.pi-section-title {
  font-size: 32px;
  font-weight: 700;
  color: #282828;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.pi-section-sub {
  font-size: 17px;
  color: #666666;
  margin: 0;
  line-height: 1.6;
}

/* ── Buttons ── */
.pi-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  border: none;
  line-height: 1.4;
}
.pi-btn--primary {
  background: #282828;
  color: #fff;
}
.pi-btn--primary:hover {
  background: #282828;
  box-shadow: 0 4px 12px rgba(40, 40, 40, 0.3);
}
.pi-btn--ghost {
  background: transparent;
  color: #282828;
  border: 1px solid #E5E5E5;
}
.pi-btn--ghost:hover {
  background: #FAFAFA;
  border-color: #E5E5E5;
}
.pi-btn--outline {
  background: transparent;
  color: #282828;
  border: 1px solid #E5E5E5;
  padding: 8px 20px;
  font-size: 14px;
}
.pi-btn--outline:hover {
  border-color: #FF0000;
  color: #FF0000;
}
.pi-btn--lg {
  padding: 14px 36px;
  font-size: 16px;
}

/* ── Section 1: Hero ── */
.pi-hero {
  padding: 64px 0 80px;
  background: #FAFAFA;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}
.pi-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 64px;
}
.pi-hero-text {
  flex: 0 0 420px;
}
.pi-hero-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(255, 0, 0,0.08);
  color: #FF0000;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.pi-hero-title {
  font-size: 42px;
  font-weight: 800;
  color: #282828;
  margin: 0 0 16px;
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.pi-hero-x {
  color: #FF0000;
  font-weight: 400;
}
.pi-hero-sub {
  font-size: 17px;
  color: #666666;
  line-height: 1.7;
  margin: 0 0 12px;
}
.pi-hero-desc {
  font-size: 14px;
  color: #999999;
  line-height: 1.7;
  margin: 0 0 28px;
}
.pi-hero-actions {
  display: flex;
  gap: 12px;
}
.pi-hero-video {
  flex: 1;
  min-width: 0;
}

/* ── Video Player ── */
.pi-video-player {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  background: #000;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}
.pi-video-player video {
  width: 100%;
  display: block;
}
.pi-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.9;
  transition: opacity 0.2s, transform 0.2s;
  padding: 0;
}
.pi-video-play:hover {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.08);
}
.pi-video-play svg {
  width: 56px;
  height: 56px;
}
.pi-video-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  opacity: 0;
  transition: opacity 0.3s;
}
.pi-video-player:hover .pi-video-controls,
.pi-video-player.playing .pi-video-controls {
  opacity: 1;
}
.pi-vc-btn {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
}
.pi-vc-icon {
  width: 18px;
  height: 18px;
}
.pi-vc-progress {
  flex: 1;
  height: 4px;
  background: rgba(255,255,255,0.3);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}
.pi-vc-bar {
  height: 100%;
  background: #FF0000;
  border-radius: 2px;
  width: 0%;
  transition: width 0.1s linear;
}
.pi-vc-time {
  color: rgba(255,255,255,0.8);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ── Section 4 & 5: Studio Detail ── */
.pi-studio-detail {
  padding: 80px 0;
}
.pi-studio-detail--reverse {
  background: #FAFAFA;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}
.pi-studio-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 64px;
}
.pi-studio-detail--reverse .pi-studio-inner {
  flex-direction: row-reverse;
}
.pi-studio-preview {
  flex: 1;
  min-width: 0;
}
.pi-studio-info {
  flex: 0 0 380px;
}
.pi-studio-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(255, 0, 0,0.08);
  color: #FF0000;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}
.pi-studio-tag--red {
  background: rgba(255, 0, 0,0.08);
  color: #FF0000;
}
.pi-studio-title {
  font-size: 32px;
  font-weight: 700;
  color: #282828;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}
.pi-studio-subtitle {
  font-size: 17px;
  color: #666666;
  margin: 0 0 28px;
}

/* ── Flow Steps ── */
.pi-studio-flow {
  display: flex;
  align-items: center;
  gap: 8px;
}
.pi-flow-step {
  padding: 6px 14px;
  border-radius: 6px;
  background: #FAFAFA;
  color: #666666;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
}
.pi-flow-step--accent {
  background: rgba(255, 0, 0,0.08);
  color: #FF0000;
}
.pi-flow-step--red {
  background: rgba(255, 0, 0,0.08);
  color: #FF0000;
}
.pi-studio-flow svg {
  width: 24px;
  height: 12px;
  flex-shrink: 0;
}

/* ── Q&A Block ── */
.pi-qablock {
  margin-bottom: 28px;
}
.pi-qablock-item {
  margin-bottom: 20px;
}
.pi-qablock-q {
  font-size: 14px;
  font-weight: 600;
  color: #282828;
  margin: 0 0 8px;
  padding-left: 12px;
  border-left: 3px solid #FF0000;
}
.pi-studio-detail--reverse .pi-qablock-q {
  border-left-color: #FF0000;
}
.pi-qablock-a {
  font-size: 14px;
  color: #666666;
  line-height: 1.7;
  margin: 0;
  padding-left: 15px;
}
.pi-qablock-list {
  list-style: none;
  padding: 0;
  margin: 0;
  padding-left: 15px;
}
.pi-qablock-list li {
  font-size: 14px;
  color: #666666;
  line-height: 1.7;
  padding: 2px 0;
  padding-left: 16px;
  position: relative;
}
.pi-qablock-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #E5E5E5;
}

/* ── Capability Tags ── */
.pi-capability-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.pi-cap-tag {
  padding: 4px 12px;
  border-radius: 100px;
  background: #F3F3F3;
  color: #282828;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid #E5E5E5;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.pi-cap-tag--red {
  background: #F3F3F3;
  color: #282828;
  border-color: #E5E5E5;
}
.pi-cap-tag:hover,
.pi-cap-tag--red:hover {
  background: rgba(255, 0, 0, 0.06);
  color: #FF0000;
  border-color: rgba(255, 0, 0, 0.25);
}

/* ── Orange Button ── */
.pi-btn--orange {
  background: #FF0000;
  color: #fff;
}
.pi-btn--orange:hover {
  background: #FF0000;
  box-shadow: 0 4px 12px rgba(255, 0, 0,0.3);
}

/* ── Mockup ── */
.pi-mockup {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E5E5E5;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.pi-mockup--screenshot {
  padding: 0;
  border: 1px solid #E5E5E5;
}
.pi-mockup-screenshot {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 7px;
}
.pi-mockup-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #FAFAFA;
  border-bottom: 1px solid #E5E5E5;
}
.pi-mockup-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #E5E5E5;
}
.pi-mockup-dot--red { background: #FF0000; }
.pi-mockup-title {
  font-size: 12px;
  color: #999999;
  margin-left: 6px;
}
.pi-mockup-body {
  display: flex;
  min-height: 260px;
}
.pi-mockup-sidebar {
  width: 140px;
  border-right: 1px solid #E5E5E5;
  padding: 8px;
  flex-shrink: 0;
}
.pi-mockup-sidebar-item {
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 13px;
  color: #666666;
  margin-bottom: 2px;
}
.pi-mockup-sidebar-item--active {
  background: #FAFAFA;
  color: #282828;
  font-weight: 500;
}
.pi-mockup-main {
  flex: 1;
  padding: 12px;
  display: flex;
  flex-direction: column;
}
.pi-mockup-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid #F3F3F3;
  margin-bottom: 10px;
  font-size: 13px;
  color: #999999;
}
.pi-mockup-badge {
  padding: 2px 8px;
  border-radius: 100px;
  background: rgba(255, 0, 0,0.08);
  color: #FF0000;
  font-size: 11px;
  font-weight: 600;
}
.pi-mockup-badge--red {
  background: rgba(255, 0, 0,0.08);
  color: #FF0000;
}
.pi-mockup-content {
  flex: 1;
}
.pi-mockup-line {
  padding: 4px 0;
  font-size: 13px;
  color: #999999;
  line-height: 1.5;
}
.pi-mockup-line--title {
  font-weight: 600;
  color: #282828;
  font-size: 14px;
  margin-bottom: 4px;
}
.pi-mockup-line--indent {
  padding-left: 16px;
}
.pi-mockup-line--highlight {
  color: #FF0000;
  background: rgba(255, 0, 0,0.04);
  padding: 4px 8px;
  border-radius: 4px;
  border-left: 2px solid #FF0000;
}
.pi-mockup-line--highlight {
  color: #FF0000;
  background: rgba(255, 0, 0,0.04);
  padding: 4px 8px;
  border-radius: 4px;
  border-left: 2px solid #FF0000;
}
.pi-mockup-timeline {
  display: flex;
  gap: 4px;
  margin-top: auto;
  padding-top: 10px;
}
.pi-mockup-clip {
  height: 24px;
  border-radius: 4px;
  background: #F3F3F3;
  display: flex;
  align-items: center;
  padding: 0 8px;
  font-size: 11px;
  color: #999999;
}
.pi-mockup-clip--accent {
  background: rgba(255, 0, 0,0.08);
  color: #FF0000;
}

/* ── Dark Mockup (绘影) ── */
.pi-mockup--dark {
  background: #282828;
  border-color: #3A3A3A;
}
.pi-mockup--dark .pi-mockup-header {
  background: #1E1E1E;
  border-color: #3A3A3A;
}
.pi-mockup--dark .pi-mockup-dot {
  background: #555;
}
.pi-mockup--dark .pi-mockup-dot--red {
  background: #FF0000;
}
.pi-mockup--dark .pi-mockup-title {
  color: #666;
}
.pi-mockup--dark .pi-mockup-sidebar {
  border-color: #3A3A3A;
  background: #1E1E1E;
}
.pi-mockup--dark .pi-mockup-sidebar-item {
  color: #666;
}
.pi-mockup--dark .pi-mockup-sidebar-item--active {
  background: #333;
  color: #eee;
}
.pi-mockup--dark .pi-mockup-main {
  background: #282828;
}
.pi-mockup--dark .pi-mockup-toolbar {
  border-color: #3A3A3A;
  color: #555;
}
.pi-mockup--dark .pi-mockup-badge {
  background: rgba(255,0,0,0.15);
  color: #FF0000;
}
.pi-mockup--dark .pi-mockup-line {
  color: #555;
}
.pi-mockup--dark .pi-mockup-line--title {
  color: #eee;
}
.pi-mockup--dark .pi-mockup-line--highlight {
  color: #FF0000;
  background: rgba(255,0,0,0.08);
  border-left-color: #FF0000;
}
.pi-mockup--dark .pi-mockup-timeline {
  border-top-color: #3A3A3A;
}
.pi-mockup--dark .pi-mockup-clip {
  background: #333;
  color: #666;
}
.pi-mockup--dark .pi-mockup-clip--accent {
  background: rgba(255,0,0,0.2);
  color: #FF0000;
}

/* ── Section 6: Scenarios ── */
.pi-scenarios {
  padding: 96px 0;
  background: #FAFAFA;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}

/* ── Featured Cards (Row 1) ── */
.pi-scenario-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto 24px;
}
.pi-scenario-featured-card {
  background: #fff;
  border: 1px solid #E5E5E5;
  border-radius: 12px;
  padding: 36px 32px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.pi-scenario-featured-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #FF0000, #FF0000 60%, transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.pi-scenario-featured-card:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  transform: translateY(-3px);
  border-color: rgba(255,0,0,0.25);
}
.pi-scenario-featured-card:hover::before {
  opacity: 1;
}
.pi-sf-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.pi-sf-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #282828;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
  transition: background 0.3s ease;
}
.pi-scenario-featured-card:hover .pi-sf-icon {
  background: #FF0000;
}
.pi-sf-icon svg {
  width: 20px;
  height: 20px;
}
.pi-sf-title {
  font-size: 20px;
  font-weight: 700;
  color: #282828;
  margin: 0;
  letter-spacing: -0.02em;
}
.pi-sf-desc {
  font-size: 15px;
  color: #666666;
  margin: 0 0 20px;
  line-height: 1.6;
}
.pi-sf-flow {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.pi-sf-step {
  padding: 6px 14px;
  border-radius: 6px;
  background: #F3F3F3;
  color: #282828;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: all 0.25s ease;
}
.pi-sf-step--end {
  background: #282828;
  color: #fff;
}
.pi-sf-arrow {
  color: #FF0000;
  font-size: 14px;
  margin: 0 6px;
  font-weight: 500;
}
.pi-sf-combo {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid #F3F3F3;
  font-size: 13px;
  color: #666666;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pi-sf-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #FF0000;
  flex-shrink: 0;
}

/* ── Compact Cards (Row 2) ── */
.pi-scenario-compact {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.pi-scenario-compact-card {
  background: #fff;
  border: 1px solid #E5E5E5;
  border-radius: 12px;
  padding: 28px 24px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.pi-scenario-compact-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.07);
  transform: translateY(-2px);
  border-color: rgba(255,0,0,0.25);
}
.pi-sc-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #F3F3F3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #282828;
  margin-bottom: 14px;
  transition: all 0.3s ease;
}
.pi-sc-icon svg {
  width: 18px;
  height: 18px;
}
.pi-scenario-compact-card:hover .pi-sc-icon {
  background: #282828;
  color: #fff;
}
.pi-sc-title {
  font-size: 16px;
  font-weight: 600;
  color: #282828;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.pi-sc-desc {
  font-size: 14px;
  color: #666666;
  margin: 0 0 16px;
  line-height: 1.5;
}
.pi-sc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.pi-sc-tags span {
  padding: 3px 10px;
  border-radius: 100px;
  background: #F3F3F3;
  color: #282828;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.25s ease;
}
.pi-scenario-compact-card:hover .pi-sc-tags span {
  background: rgba(255,0,0,0.06);
  color: #FF0000;
}

/* ── CTA Dark ── */
.pi-cta-dark {
  background: #282828;
  padding: 80px 0;
  text-align: center;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}
.pi-cta-dark-title {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.pi-cta-dark-sub {
  font-size: 17px;
  color: #999;
  margin: 0 0 36px;
  line-height: 1.6;
}
.pi-cta-dark-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}
.pi-btn--ghost-dark {
  background: transparent;
  color: #fff;
  border: 1px solid #555;
}
.pi-btn--ghost-dark:hover {
  border-color: #999;
  background: rgba(255,255,255,0.05);
}

/* ── Product Intro Responsive ── */
@media (max-width: 1024px) {
  .pi-hero-inner {
    flex-direction: column;
    gap: 40px;
  }
  .pi-hero-text {
    flex: none;
    text-align: center;
  }
  .pi-hero-actions {
    justify-content: center;
  }
  .pi-studio-inner {
    flex-direction: column !important;
    gap: 40px;
  }
  .pi-studio-info {
    flex: none;
    width: 100%;
  }
}
@media (max-width: 768px) {
  .pi-hero-title {
    font-size: 28px;
  }
  .pi-hero-sub {
    font-size: 15px;
  }
  .pi-section-title {
    font-size: 24px;
  }
  .pi-scenario-featured {
    grid-template-columns: 1fr;
  }
  .pi-scenario-compact {
    grid-template-columns: 1fr 1fr;
  }
  .pi-studio-flow {
    flex-wrap: wrap;
  }
  .pi-mockup-sidebar {
    display: none;
  }
  .pi-studio-title {
    font-size: 26px;
  }
}

/* ── Accent Bar ── */
.case-card-accent {
  height: 3px;
  background: linear-gradient(90deg, #FF0000, #FF0000);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.case-card-accent::after {
  content: '';
  position: absolute;
  top: 0; left: -100%; right: 0; bottom: 0;
  width: 200%;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.6) 50%, transparent 100%);
  animation: shimmer 2.5s ease-in-out infinite;
  animation-delay: 1.2s;
  opacity: 0;
}
.case-card.visible .case-card-accent::after {
  opacity: 1;
}
@keyframes shimmer {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(50%); }
}
.case-card[data-accent="orange"] .case-card-accent,
.case-card .case-card-accent[data-accent="orange"] {
  background: linear-gradient(90deg, #FF0000, #FF0000);
}

/* ── Card Body ── */
.case-card-body {
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}
.case-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.case-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid #E5E5E5;
  color: var(--text-secondary);
  background: #FAFAFA;
  transition: all 0.35s;
}
.case-card-tag::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}
.case-card.level-province .case-card-tag {
  border-color: rgba(230,0,0,0.2);
  color: #FF0000;
  background: rgba(230,0,0,0.04);
}
.case-card.level-national .case-card-tag {
  border-color: rgba(230,0,0,0.3);
  color: var(--brand-red);
  background: rgba(230,0,0,0.05);
}
.case-card.level-enterprise .case-card-tag {
  border-color: rgba(255, 0, 0,0.2);
  color: #FF0000;
  background: rgba(255, 0, 0,0.04);
}
.case-card.level-innovation .case-card-tag {
  border-color: rgba(184,0,0,0.2);
  color: var(--brand-crimson);
  background: rgba(184,0,0,0.04);
}

/* ── Number Decor ── */
.case-card-num {
  font-size: 48px;
  font-weight: 900;
  color: rgba(0,0,0,0.03);
  line-height: 1;
  user-select: none;
  transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  position: absolute;
  top: -8px;
  right: 20px;
}

/* ── Title & Line ── */
.case-card h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--text-primary);
  transition: color 0.35s;
  position: relative;
}
.case-card-line {
  width: 28px;
  height: 2px;
  background: #E5E5E5;
  transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 1px;
}
.case-card-body p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Hover Glow Layer ── */
.case-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(180deg, rgba(230,0,0,0.03), transparent);
  opacity: 0;
  transition: opacity 0.45s;
  pointer-events: none;
}

/* ── Card Hover ── */
.case-card:hover {
  transform: translateY(-6px) rotateX(1deg);
  border-color: rgba(230,0,0,0.12);
  box-shadow: var(--shadow-elevate);
}
.case-card:hover::before {
  transform: scaleX(1);
}
.case-card:hover::after {
  opacity: 1;
}
.case-card:hover .case-card-accent {
  transform: scaleX(1);
}
.case-card:hover .case-card-tag {
  background: rgba(230,0,0,0.06);
  border-color: var(--brand-red);
  color: var(--brand-red);
}
.case-card:hover .case-card-num {
  color: rgba(230,0,0,0.06);
  transform: scale(1.05);
}
.case-card:hover h4 {
  color: var(--brand-red);
}
.case-card:hover .case-card-line {
  width: 48px;
  background: linear-gradient(90deg, var(--brand-red), #FF0000);
}

/* ── Staggered entrance ── */
.case-card:nth-child(1) { transition-delay: 0.00s; }
.case-card:nth-child(2) { transition-delay: 0.08s; }
.case-card:nth-child(3) { transition-delay: 0.16s; }
.case-card:nth-child(4) { transition-delay: 0.24s; }
.case-card:nth-child(5) { transition-delay: 0.32s; }
.case-card:nth-child(6) { transition-delay: 0.40s; }
.case-card:nth-child(7) { transition-delay: 0.48s; }
.case-card:nth-child(8) { transition-delay: 0.56s; }
.case-card:nth-child(9) { transition-delay: 0.64s; }

/* ===== Cooperation Section ===== */
.coop-section {
  position: relative;
}
.coop-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 1px 1px, rgba(230, 0, 0, 0.025) 1px, transparent 0);
  background-size: 36px 36px;
  pointer-events: none;
}
.coop-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.coop-card--wide {
  grid-column: span 2;
}
.coop-card--wide .coop-card-img {
  height: 200px;
}
.coop-card {
  border-radius: var(--radius-lg);
  background: #FFFFFF;
  border: 1px solid rgba(230, 0, 0, 0.06);
  overflow: hidden;
  transition: all var(--transition-medium);
  position: relative;
  box-shadow: var(--shadow-card);
}
/* Animated border glow */
.coop-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(230, 0, 0, 0);
  transition: border-color var(--transition-medium);
  pointer-events: none;
}
.coop-card:hover {
  border-color: rgba(230, 0, 0, 0.2);
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevate);
}
.coop-card:hover::after {
  border-color: rgba(230, 0, 0, 0.12);
}
.coop-card-img {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(230, 0, 0, 0.06), rgba(255, 0, 0, 0.03));
  color: var(--brand-red);
}
/* Circuit pattern on card image */
.coop-card-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(230, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 0, 0, 0.03) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0;
  transition: opacity var(--transition-medium);
}
.coop-card:hover .coop-card-img::before {
  opacity: 1;
}
/* Scan line on image */
.coop-card-img::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(230, 0, 0, 0.3), transparent);
  top: 30%;
  opacity: 0;
  transition: opacity var(--transition-medium);
}
.coop-card:hover .coop-card-img::after {
  opacity: 1;
  animation: scanline 2s linear infinite;
}
.coop-card-img .coop-icon {
  font-size: 48px;
  transition: transform var(--transition-medium), filter var(--transition-medium);
  position: relative;
  z-index: 1;
}
.coop-card-img svg {
  transition: transform var(--transition-medium), filter var(--transition-medium);
  position: relative;
  z-index: 1;
  opacity: 0.7;
}
.coop-card:hover .coop-icon {
  transform: scale(1.1);
}
.coop-card:hover .coop-card-img svg {
  transform: scale(1.15);
  opacity: 1;
}
/* Photo variant of card image */
.coop-card-img-photo {
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #FAFAFA;
}
.coop-card-img-photo::before {
  display: none !important;
}
.coop-card-img-photo::after {
  display: none !important;
}
.coop-card:hover .coop-card-img-photo {
  transform: scale(1.02);
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.coop-card-body {
  padding: 20px;
  position: relative;
}
.coop-card-body h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}
.coop-card-body p {
  font-size: 13px;
  color: var(--text-secondary);
}
/* Tech corner accent on body */
.coop-card-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(230, 0, 0, 0.1), transparent);
}
.coop-tag {
  display: inline-block;
  margin-top: 8px;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(230, 0, 0, 0.05);
  border: 1px solid rgba(230, 0, 0, 0.08);
  color: var(--brand-red);
}

/* ===== Training Section ===== */
.training-section {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}
.training-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(230, 0, 0, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 0, 0, 0.015) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}
.course-timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}
.course-timeline::before {
  content: '';
  position: absolute;
  left: 32px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--brand-red), var(--brand-orange), var(--brand-light), var(--brand-crimson), var(--brand-red));
  opacity: 0.3;
}
/* Animated data flow on timeline */
.course-timeline::after {
  content: '';
  position: absolute;
  left: 32px;
  top: 0;
  width: 2px;
  height: 60px;
  background: linear-gradient(180deg, transparent, rgba(230, 0, 0, 0.5), transparent);
  animation: dataFlowLine 3s linear infinite;
  pointer-events: none;
}
@keyframes dataFlowLine {
  0% { top: -60px; }
  100% { top: 100%; }
}
.course-item {
  display: flex;
  gap: 24px;
  padding: 0 0 32px;
  position: relative;
}
.course-item:last-child {
  padding-bottom: 0;
}
.course-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 3px solid var(--brand-red);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  margin-left: 20px;
  margin-top: 4px;
  transition: all var(--transition-fast);
  box-shadow: 0 0 0 4px rgba(230, 0, 0, 0.05);
}
/* Pulse animation on dot */
.course-dot::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid rgba(230, 0, 0, 0);
  transition: all var(--transition-medium);
}
.course-item:hover .course-dot {
  background: var(--brand-red);
  box-shadow: 0 0 12px rgba(230, 0, 0, 0.25), 0 0 0 4px rgba(230, 0, 0, 0.1);
}
.course-item:hover .course-dot::after {
  border-color: rgba(230, 0, 0, 0.2);
  animation: dotPulse 1.5s ease-in-out infinite;
}
.course-item:nth-child(2) .course-dot { border-color: var(--brand-orange); }
.course-item:nth-child(3) .course-dot { border-color: var(--brand-crimson); }
.course-item:nth-child(4) .course-dot { border-color: var(--accent-rose); }
.course-item:nth-child(5) .course-dot { border-color: var(--brand-orange); }
.course-item:nth-child(6) .course-dot { border-color: var(--brand-red); }
.course-item:hover:nth-child(2) .course-dot { background: var(--brand-orange); box-shadow: 0 0 12px rgba(255, 0, 0, 0.25); }
.course-item:hover:nth-child(3) .course-dot { background: var(--brand-crimson); box-shadow: 0 0 12px rgba(184, 0, 0, 0.25); }
.course-item:hover:nth-child(4) .course-dot { background: var(--accent-rose); box-shadow: 0 0 12px rgba(255, 107, 138, 0.25); }
.course-item:hover:nth-child(5) .course-dot { background: var(--brand-orange); box-shadow: 0 0 12px rgba(255, 0, 0, 0.25); }
.course-card {
  flex: 1;
  padding: 24px;
  border-radius: var(--radius-md);
  background: #FFFFFF;
  border: 1px solid rgba(230, 0, 0, 0.06);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
/* Shimmer effect on hover */
.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(230, 0, 0, 0.02), transparent);
  transition: left 0.6s;
}
.course-card:hover::before {
  left: 100%;
}
.course-card:hover {
  border-color: rgba(230, 0, 0, 0.15);
  transform: translateX(4px);
  box-shadow: var(--shadow-card-hover);
}
.course-card-step {
  font-size: 11px;
  font-weight: 700;
  color: var(--brand-red);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.course-card-step::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: currentColor;
  opacity: 0.5;
}
.course-item:nth-child(2) .course-card-step { color: var(--brand-orange); }
.course-item:nth-child(3) .course-card-step { color: var(--brand-crimson); }
.course-item:nth-child(4) .course-card-step { color: var(--accent-rose); }
.course-item:nth-child(5) .course-card-step { color: var(--brand-orange); }
.course-item:nth-child(6) .course-card-step { color: var(--brand-red); }
.course-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.course-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Partners Section ===== */
.partners-section {
  position: relative;
  overflow: hidden;
}
.partners-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 1px 1px, rgba(230, 0, 0, 0.02) 1px, transparent 0);
  background-size: 28px 28px;
  pointer-events: none;
}

/* Category Header */
.partners-category-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.partners-category-icon {
  display: none;
}
.partners-category-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--brand-red);
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.partners-category-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(230, 0, 0, 0.15), rgba(230, 0, 0, 0.02));
}

/* Marquee Container */
.partners-marquee {
  position: relative;
  overflow: hidden;
  margin-bottom: 40px;
  mask-image: linear-gradient(90deg, transparent 0%, black 8%, black 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, black 8%, black 92%, transparent 100%);
}
.partners-marquee-track {
  display: flex;
  gap: 16px;
  width: max-content;
  animation: marqueeScroll 40s linear infinite;
}
.partners-marquee-track-reverse {
  animation: marqueeScrollReverse 35s linear infinite;
}
.partners-marquee-track-slow {
  animation: marqueeScroll 50s linear infinite;
}
.partners-marquee:hover .partners-marquee-track {
  animation-play-state: paused;
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@keyframes marqueeScrollReverse {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}

/* Partner Card */
.partner-card {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 130px;
  height: 72px;
  background: #FFFFFF;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  transition: all var(--transition-medium);
  cursor: default;
  box-shadow: 0 1px 4px rgba(230, 0, 0, 0.02);
  position: relative;
  overflow: hidden;
}
.partner-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-red), #FF0000);
  transform: scaleX(0);
  transition: transform var(--transition-medium);
}
.partner-card:hover {
  border-color: rgba(230, 0, 0, 0.2);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}
.partner-card:hover::after {
  transform: scaleX(1);
}
.partner-card-accent {
  background: linear-gradient(135deg, #FFFFFF 0%, #F3F3F3 100%);
}
.partner-card-icon {
  display: none;
}
.partner-card-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  transition: color var(--transition-medium);
}
.partner-card:hover .partner-card-name {
  color: var(--brand-red);
}

/* ===== Contact / Footer ===== */
.contact-section {
  position: relative;
  overflow: hidden;
  background: #F3F3F3;
  color: #282828;
}
.contact-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 80%, rgba(230, 0, 0, 0.04), transparent 60%),
              radial-gradient(ellipse at 20% 20%, rgba(230, 0, 0, 0.03), transparent 50%);
  pointer-events: none;
}
.contact-content {
  position: relative;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}
.contact-content h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  color: #282828;
}
.contact-content p {
  color: #555555;
  margin-bottom: 32px;
  font-size: 16px;
}
.contact-content .btn-primary {
  background: #FFFFFF;
  color: var(--brand-red);
}
.contact-content .btn-primary:hover {
  background: #FF0000;
  color: #FFFFFF;
}
.contact-content .btn-secondary {
  color: #3A3A3A;
  border-color: rgba(230, 0, 0, 0.2);
}
.contact-content .btn-secondary:hover {
  background: #F3F3F3;
  border-color: var(--brand-red);
  color: var(--brand-red);
}

/* ===== Quick Navigation Cards (Homepage) ===== */
.quick-nav-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.quick-nav-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid #F3F3F3;
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.45s var(--ease-out-expo),
              box-shadow 0.45s var(--ease-out-expo),
              border-color 0.35s ease;
  overflow: hidden;
}
.quick-nav-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: #FF0000;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out-expo);
}
.quick-nav-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255,0,0,0.15);
  box-shadow: var(--shadow-elevate);
}
.quick-nav-card:hover::before {
  transform: scaleX(1);
}
.quick-nav-card--cta {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding: 32px 36px;
  background: #fff;
  border: 1px solid #F3F3F3;
  border-radius: 14px;
  gap: 24px;
}
.quick-nav-card--cta::before {
  display: none;
}
.quick-nav-card--cta:hover {
  border-color: rgba(255,0,0,0.15);
  box-shadow: 0 6px 24px rgba(0,0,0,0.06);
  transform: translateY(-3px);
}
.quick-nav-card--cta .quick-nav-icon {
  background: #282828;
  flex-shrink: 0;
}
.quick-nav-card--cta .quick-nav-icon svg {
  stroke: #fff;
}
.quick-nav-card--cta .quick-nav-cta-body {
  flex: 1;
  min-width: 0;
}
.quick-nav-card--cta h3 {
  color: #282828;
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
}
.quick-nav-card--cta:hover h3 {
  color: #282828;
}
.quick-nav-card--cta p {
  color: #999;
  font-size: 14px;
}
.quick-nav-card--cta .quick-nav-arrow {
  position: static;
  width: auto;
  height: auto;
  border-radius: 100px;
  background: #282828;
  padding: 12px 32px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  border: none;
  cursor: pointer;
  transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}
.quick-nav-card--cta .quick-nav-arrow svg {
  stroke: #fff;
  width: 18px;
  height: 18px;
  transition: transform 0.25s ease;
}
.quick-nav-card--cta:hover .quick-nav-arrow {
  background: #282828;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}
.quick-nav-card--cta:hover .quick-nav-arrow svg {
  transform: translateX(3px);
}
.quick-nav-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(230, 0, 0, 0.05);
  margin-bottom: 18px;
}
.quick-nav-icon svg {
  width: 22px;
  height: 22px;
  stroke: #FF0000;
}
.quick-nav-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #282828;
  margin-bottom: 8px;
  transition: color 0.3s ease;
}
.quick-nav-card:hover h3 {
  color: #FF0000;
}
.quick-nav-card p {
  font-size: 14px;
  color: #888;
  line-height: 1.6;
  flex: 1;
}
.quick-nav-stats {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}
.quick-nav-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.quick-nav-stat strong {
  font-size: 20px;
  font-weight: 800;
  color: #FF0000;
  line-height: 1.2;
}
.quick-nav-stat span {
  font-size: 11px;
  color: #999;
  margin-top: 2px;
}
.quick-nav-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}
.quick-nav-tags span {
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid #F3F3F3;
  color: #999;
  transition: all 0.3s ease;
}
.quick-nav-card:hover .quick-nav-tags span {
  border-color: rgba(230, 0, 0, 0.2);
  color: #FF0000;
  background: rgba(230, 0, 0, 0.03);
}
.quick-nav-arrow {
  position: absolute;
  top: 28px;
  right: 24px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(230, 0, 0, 0.05);
  transition: all 0.3s ease;
}
.quick-nav-arrow svg {
  stroke: #FF0000;
}
.quick-nav-card:hover .quick-nav-arrow {
  background: rgba(230, 0, 0, 0.1);
  transform: translateX(2px);
}

/* ===== Partners Detail Page (larger cards) ===== */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.partners-grid .partner-card {
  width: auto;
  height: auto;
  flex-shrink: unset;
  padding: 28px 24px;
  gap: 12px;
}
.partner-logo-wrap {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(230, 0, 0, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}
.partner-logo-placeholder {
  color: #FF0000;
}
.partners-grid .partner-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
}
.partners-grid .partner-card p {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.5;
}
.partner-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid rgba(230, 0, 0, 0.15);
  color: var(--brand-red);
  background: rgba(230, 0, 0, 0.03);
}

/* ===== Contact Detail Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
  align-items: start;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-info-card {
  padding: 24px;
  background: #fff;
  border: 1px solid #F3F3F3;
  border-radius: 14px;
  transition: all 0.3s ease;
}
.contact-info-card:hover {
  border-color: rgba(230, 0, 0, 0.12);
  box-shadow: 0 8px 24px rgba(230, 0, 0, 0.06);
}
.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(230, 0, 0, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: var(--brand-red);
}
.contact-info-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.contact-info-card p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.contact-info-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--brand-red);
  text-decoration: none;
  transition: opacity 0.2s;
}
a.contact-info-link:hover {
  opacity: 0.85;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.contact-form-wrap {
  background: #fff;
  border: 1px solid #F3F3F3;
  border-radius: 16px;
  padding: 32px;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 14px;
  border: 1px solid #F3F3F3;
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #FAFAFA;
  color: var(--text-primary);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--brand-red);
  box-shadow: 0 0 0 3px rgba(230, 0, 0, 0.08);
  background: #fff;
}
.form-group textarea {
  resize: vertical;
}
.btn-submit {
  align-self: flex-start;
  padding: 12px 32px;
}

/* Flip card touch support */
.team-flip-card.flipped .team-flip-inner {
  transform: rotateY(180deg);
}

/* ===== Subpage Header Banner ===== */
.page-banner {
  position: relative;
  padding: 120px 0 60px;
  background: linear-gradient(180deg, rgba(230, 0, 0, 0.03) 0%, transparent 100%);
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(circle, rgba(0,0,0,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.page-banner .section-inner {
  position: relative;
  z-index: 1;
}
.page-banner .section-label {
  margin-bottom: 8px;
}
.page-banner .section-title {
  font-size: 36px;
  margin-bottom: 12px;
}
.page-banner .section-desc {
  max-width: 600px;
}
.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 13px;
  color: #999;
}
.page-breadcrumb a {
  color: #999;
  text-decoration: none;
  transition: color 0.2s;
}
.page-breadcrumb a:hover {
  color: #FF0000;
}
.page-breadcrumb span {
  color: #333;
  font-weight: 500;
}

/* Footer */
.footer {
  padding: 40px 0;
  border-top: 1px solid rgba(230, 0, 0, 0.06);
  background: #FFFFFF;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-left {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 15px;
  color: var(--brand-red);
}
.footer-logo-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand-red), var(--brand-orange));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
}
.footer-logo-img {
  height: 28px;
  width: auto;
  border-radius: 4px;
  object-fit: contain;
}
.footer-copyright {
  font-size: 12px;
  color: var(--text-muted);
}
.footer-socials {
  display: flex;
  gap: 12px;
}
.footer-social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #F3F3F3;
  border: 1px solid rgba(230, 0, 0, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.footer-social-link:hover {
  background: rgba(230, 0, 0, 0.08);
  color: var(--brand-red);
  border-color: rgba(230, 0, 0, 0.25);
  transform: scale(1.12) translateY(-2px);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .business-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .business-grid::before { display: none; }
  .business-card {
    border-radius: 12px;
  }
  .globe-bridge { display: none; }
  .capability-flow-item { font-size: 13px; }
  .capability-flow-dot { margin: 0 10px; }
  .about-content-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-stats { grid-template-columns: repeat(3, 1fr); }
  .about-highlights { flex-wrap: wrap; justify-content: center; gap: 12px; }
  .about-highlight-divider { display: none; }
  .about-highlight-item { padding: 8px 16px; }
  .business-coop { margin-top: 48px; padding-top: 36px; }
  .business-coop-title { font-size: 24px; }
  .coop-grid { grid-template-columns: repeat(3, 1fr); }
  .coop-cinema-grid { grid-template-columns: 1fr; gap: 20px; }
  .about-main-title { font-size: 28px; }
  .about-headline { font-size: 22px; }
  .team-flip-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .team-flip-card { height: 400px; }
  .case-card-grid { grid-template-columns: 1fr 1fr; }
  .quick-nav-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-nav-cta { grid-column: span 2; }
  /* Academic responsive */
  .ac-hero-inner { flex-direction: column; gap: 40px; }
  .ac-hero-visual { flex: none; width: 100%; max-width: 480px; }
  .ac-hero-title { font-size: 36px; }
  .ac-hero-metrics { flex-wrap: wrap; gap: 8px; }
  .ac-metric-divider { display: none; }
  .ac-bt-item { flex-direction: column; }
  .ac-bt-item--reverse { flex-direction: column; }
  .ac-bt-visual { flex: none; width: 100%; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta-btn { display: none; }
  .nav-mobile-toggle { display: block; }
  .nav-user {
    width: 100%;
  }
  .nav-user-trigger {
    justify-content: center;
    padding: 8px 16px;
  }
  .nav-user-name {
    max-width: none;
  }
  .nav-user-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    padding: 4px 0 0;
    min-width: auto;
    display: none;
  }
  .nav-user-dropdown.open {
    display: block;
  }
  .nav-user-dropdown-item {
    text-align: center;
    padding: 8px 16px;
  }
  .nav-user-dropdown-divider {
    margin: 4px 24px;
  }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    padding: 20px 32px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(230, 0, 0, 0.06);
    gap: 16px;
    box-shadow: 0 4px 16px rgba(230, 0, 0, 0.06);
    align-items: center;
  }
  .nav-links.mobile-open .nav-link {
    text-align: center;
    width: 100%;
  }
  .nav-links.mobile-open .nav-product {
    width: 100%;
  }
  .nav-links.mobile-open .nav-product-trigger {
    justify-content: center;
    width: 100%;
  }
  .nav-links.mobile-open .nav-product-menu {
    position: static;
    width: 100%;
    margin-top: 8px;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 1px solid rgba(230, 0, 0, 0.06);
    background: #FFF9F9;
  }
  .nav-links.mobile-open .nav-product-item {
    text-align: center;
  }
  .nav-links.mobile-open .nav-cta-btn,
  .nav-links.mobile-open .nav-user {
    display: block;
  }
  .nav-links.mobile-open .nav-cta-btn {
    background: transparent;
    border: none;
    box-shadow: none;
    color: #555555;
    font-size: 14px;
    font-weight: 500;
    padding: 4px 0;
    border-radius: 0;
    text-align: center;
    width: 100%;
  }
  .nav-links.mobile-open .nav-cta-btn:hover {
    background: transparent;
    border: none;
    box-shadow: none;
    color: #FF0000;
    transform: none;
  }
  .nav-links.mobile-open .nav-user-trigger {
    justify-content: center;
    padding: 4px 0;
  }
  .nav-links.mobile-open .nav-user-name {
    color: #555555;
    font-size: 14px;
    font-weight: 500;
  }
  .section { padding: 60px 0; }
  .section-inner { padding: 0 20px; }
  .section-header { margin-bottom: 36px; }
  .hero-title { font-size: clamp(28px, 7vw, 42px); }
  .about-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .about-section-inner { padding: 0 20px; }
  .about-headline { font-size: 20px; }
  .about-highlights { padding: 16px 20px; }
  .about-highlight-item { font-size: 13px; padding: 6px 12px; }
  .capability-flow-item { font-size: 12px; }
  .capability-flow-dot { margin: 0 8px; }
  .business-globe-wrap .globe-field { height: 520px; }
  .globe-bridge { display: none; }
  .business-grid {
    grid-template-columns: 1fr;
  }
  .business-card {
    border-radius: 12px;
  }
  .team-flip-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .team-flip-card { height: 380px; }
  .case-tabs { flex-wrap: wrap; justify-content: center; }
  .case-tab { padding: 6px 14px; font-size: 13px; }
  .case-card-grid { grid-template-columns: 1fr; }
  .case-card-body { padding: 20px; }
  .coop-cinema-grid { grid-template-columns: 1fr; gap: 16px; }
  .coop-cinema-cover { height: 180px; }
  .case-card-num { font-size: 32px; }
  .coop-grid { grid-template-columns: 1fr; }
  .coop-card--wide { grid-column: span 1; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 20px; text-align: center; }
  .footer-left { flex-direction: column; }
  .contact-content h2 { font-size: clamp(24px, 5vw, 36px); }
  /* Academic mobile */
  .ac-hero-title { font-size: 28px; }
  .ac-hero-subtitle { font-size: 17px; }
  .ac-hero-stats { gap: 24px; }
  .ac-stat-num { font-size: 28px; }
  .ac-domain-nav { flex-wrap: wrap; gap: 0; }
  .ac-domain-btn { padding: 8px 16px; font-size: 14px; }
  .ac-domain-content { flex-direction: column; gap: 28px; }
  .ac-domain-col--overview,
  .ac-domain-col--capabilities,
  .ac-domain-col--outcomes { flex: 1; }
  .ac-bt-num { font-size: 48px; }
  .ac-bt-title { font-size: 22px; }
  .ac-path-flow { flex-wrap: wrap; gap: 8px; }
  .ac-path-line { display: none; }
  .ac-cta-title { font-size: 18px; }
  .ac-cta-btns { flex-direction: column; align-items: center; }
  .ac-cta-btn { width: 100%; max-width: 280px; }
}

@media (max-width: 480px) {
  .hero-cta-group { flex-direction: column; align-items: center; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .team-flip-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
  .team-flip-card { height: 400px; }
  .about-stats { grid-template-columns: 1fr; }
  .business-card-body { padding: 20px 16px 16px; }
  .business-card-number { font-size: 26px; }
  .business-globe-wrap .globe-field { height: 440px; }
  .quick-nav-grid { grid-template-columns: 1fr; }
  .quick-nav-cta { grid-column: span 1; }
  .quick-nav-cta-body { flex-direction: row; gap: 20px; }
  .quick-nav-cta-icon { flex-shrink: 0; }
  .page-banner .section-title { font-size: 28px; }
  .partners-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ========================================
   Custom Cursor Effects — 黑白红品牌视觉
   ======================================== */
@media (pointer: fine) {
  body {
    cursor: none;
  }
  a, button, [role="button"], input, textarea, select,
  .btn-primary, .btn-secondary, .nav-cta-btn,
  .case-card, .business-card, .quick-nav-card,
  .coop-card, .coop-cinema-card, .partner-card,
  .about-stat, .about-visual-card,
  .team-flip-card, .course-item,
  .pi-scenario-card, .pi-scenario-card-lg,
  .pi-video-player, .tab-btn, .nav-tab {
    cursor: none;
  }

  /* 中心红点 — 精准跟随鼠标 */
  .cursor-dot {
    position: fixed;
    top: 0;
    left: 0;
    width: 5px;
    height: 5px;
    background: #FF0000;
    border-radius: 50%;
    pointer-events: none;
    z-index: 10001;
    transform: translate(-50%, -50%);
    transition: width 0.2s cubic-bezier(0.22, 1, 0.36, 1),
                height 0.2s cubic-bezier(0.22, 1, 0.36, 1),
                opacity 0.15s ease;
    will-change: transform;
  }

  /* 品牌红细线圆环 — 缓动跟随 */
  .cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    width: 40px;
    height: 40px;
    border: 1.5px solid rgba(255, 0, 0, 0.68);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    transition: width 0.35s cubic-bezier(0.22, 1, 0.36, 1),
                height 0.35s cubic-bezier(0.22, 1, 0.36, 1),
                border-color 0.35s cubic-bezier(0.22, 1, 0.36, 1),
                border-width 0.35s cubic-bezier(0.22, 1, 0.36, 1),
                background 0.35s cubic-bezier(0.22, 1, 0.36, 1),
                opacity 0.2s ease;
    will-change: transform;
  }

  /* Canvas 层 — 流线残影 + 磁吸线 + 点击波纹 */
  .cursor-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
  }

  /* ── Hover 态：圆环放大至 64px ── */
  .cursor-hover .cursor-dot {
    width: 5px;
    height: 5px;
  }

  .cursor-hover .cursor-ring {
    width: 64px;
    height: 64px;
    border-width: 2px;
    border-color: rgba(255, 0, 0, 0.88);
    background: rgba(255, 0, 0, 0.03);
  }

  /* ── Clicking 态：圆环收缩 ── */
  .cursor-clicking .cursor-dot {
    width: 4px;
    height: 4px;
  }

  .cursor-clicking .cursor-ring {
    width: 34px;
    height: 34px;
    border-color: rgba(255, 0, 0, 0.55);
  }

  /* ── 可交互元素 hover 红色强调 ── */
  .cursor-hover-target {
    border-color: rgba(255, 0, 0, 0.35) !important;
    box-shadow: 0 4px 16px rgba(255, 0, 0, 0.08) !important;
  }
}

/* prefers-reduced-motion：关闭拖尾和粒子 */
@media (prefers-reduced-motion: reduce) {
  .cursor-canvas {
    display: none;
  }
}