:root {
  
  --primary: #FFD23F;
  --primary-dark: #E6B800;
  --primary-light: #FFE066;
  --secondary: #FF6B6B;
  --accent: #4ECDC4;
  --dark: #0a0a0a;
  --dark-surface: #1a1a1a;
  --dark-surface-2: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b3b3b3;
  --text-muted: #888888;
  
  
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.25);
  
  
  --duration-fast: 0.2s;
  --duration-normal: 0.3s;
  --duration-slow: 0.5s;
  --easing: cubic-bezier(0.4, 0, 0.2, 1);
  
  
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: 1.6;
}
body {
  font-family: var(--font-primary);
  background: var(--dark);
  color: var(--text-primary);
  overflow-x: hidden;
  min-height: 100vh;
}
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--dark-surface);
}
::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: var(--radius-sm);
}
.particle-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}
.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.4;
  animation: float 15s infinite linear;
}
.settings-section {
  background: rgba(26, 26, 26, 0.8);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.settings-section h4 {
  margin-bottom: var(--space-md);
  color: var(--primary);
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
}



.confirm-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--easing);
}

.confirm-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.confirm-modal {
  background: var(--dark-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 400px;
  width: 90%;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-xl);
  transform: translateY(-20px);
  transition: transform var(--duration-normal) var(--easing);
}

.confirm-modal-overlay.active .confirm-modal {
  transform: translateY(0);
}

.confirm-modal-title {
  margin-bottom: var(--space-md);
  color: var(--primary);
  font-size: 1.3rem;
  font-weight: var(--font-weight-semibold);
  text-align: center;
}

.confirm-modal-message {
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.6;
}

.confirm-modal-buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
}

@keyframes float {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 0.4;
    transform: scale(1);
  }
  90% {
    opacity: 0.4;
  }
  100% {
    transform: translateY(-100vh) scale(0);
    opacity: 0;
  }
}
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1rem 0;
  transition: all var(--duration-normal) var(--easing);
}
.navbar.scrolled {
  background: rgba(10, 10, 10, 0.98);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 0;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-logo {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--primary);
  text-decoration: none;
  transition: all var(--duration-normal) var(--easing);
}
.nav-logo:hover {
  transform: scale(1.05);
  filter: brightness(1.2);
}
.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  align-items: center;
}
.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--easing);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: all var(--duration-normal) var(--easing);
  transform: translateX(-50%);
}
.nav-links a:hover {
  color: var(--primary);
  background: rgba(255, 210, 63, 0.1);
}
.nav-links a:hover::after {
  width: 80%;
}
.nav-links .btn {
  padding: var(--space-xs) var(--space-sm) !important;
  font-size: 0.95rem !important;
  margin: 0 !important;
  border-radius: var(--radius-md) !important;
  height: auto !important;
  min-width: auto !important;
  text-decoration: none !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
}
.user-menu {
  position: relative;
}
.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--space-xs);
  min-width: 150px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  z-index: 1000;
  list-style: none;
}
.user-dropdown li {
  list-style: none;
  margin: 0;
  padding: 0;
}
.user-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.user-dropdown a {
  display: block;
  padding: var(--space-sm);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}
.user-dropdown a:hover {
  background: rgba(255, 210, 63, 0.1);
  color: var(--primary);
}
#logout-link {
  color: var(--secondary);
}
#logout-link:hover {
  background: rgba(255, 107, 107, 0.1);
  color: var(--secondary);
}
.confirm-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
.confirm-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
.confirm-modal {
  background: var(--dark-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 400px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: all 0.3s ease;
}
.confirm-modal-overlay.active .confirm-modal {
  transform: translateY(0);
}
.confirm-modal-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}
.confirm-modal-message {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}
.confirm-modal-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}
.confirm-modal-buttons .btn {
  flex: 1;
  min-width: 120px;
}
.user-menu:hover .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
#user-menu-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  cursor: pointer;
  text-decoration: none;
}
#user-menu-toggle::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: var(--space-xs);
  vertical-align: middle;
  border-top: 4px solid var(--text-muted);
  border-right: 4px solid transparent;
  border-left: 4px solid transparent;
  background: none;
  transition: transform 0.2s ease;
}
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}
.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--duration-normal) var(--easing);
  border-radius: 2px;
}
.main-content {
  margin-top: 80px;
  min-height: calc(100vh - 80px);
}
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-surface) 100%);
}
.hero-content {
  text-align: center;
  max-width: 800px;
  padding: var(--space-xl);
  position: relative;
  z-index: 2;
}
.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s var(--easing);
}
.hero-subtitle {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.8;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s var(--easing) 0.2s;
}
.hero-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s var(--easing) 0.4s;
}
.btn {
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--duration-normal) var(--easing);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--dark);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-secondary:hover {
  background: rgba(255, 210, 63, 0.1);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s var(--easing);
}
.scroll-animate.visible {
  opacity: 1;
  transform: translateY(0);
}
.announcements-section {
  padding: var(--space-2xl) var(--space-lg);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.01) 100%);
}
.announcements-container {
  max-width: 1000px;
  margin: 0 auto;
}
.announcement-card {
  background: var(--dark-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  transition: all var(--duration-normal) var(--easing);
  position: relative;
  overflow: hidden;
}
.announcement-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  transform: scaleY(0);
  transition: transform var(--duration-normal) var(--easing);
}
.announcement-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.announcement-card:hover::before {
  transform: scaleY(1);
}
.announcement-header {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-sm);
}
.announcement-type {
  display: inline-block;
  background: var(--primary);
  color: var(--dark);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
  align-self: flex-start;
}
.announcement-title {
  font-size: 1.2rem;
  font-weight: var(--font-weight-semibold);
  color: var(--primary);
  margin-bottom: var(--space-xs);
}
.announcement-date {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-sm);
}
.announcement-content {
  color: var(--text-secondary);
  line-height: 1.6;
}
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--easing);
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
.modal {
  background: var(--dark-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: all var(--duration-normal) var(--easing);
}
.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.modal-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}
.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--easing);
}
.modal-close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}
.form-group {
  margin-bottom: var(--space-md);
}
.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}
.form-input {
  width: 100%;
  padding: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  background: var(--dark-surface-2);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--duration-normal) var(--easing);
}
.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 210, 63, 0.1);
}
.form-input::placeholder {
  color: var(--text-muted);
}
.site-footer {
  background: var(--dark-surface);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  margin-top: var(--space-2xl);
}
.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}
.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--duration-normal) var(--easing);
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-sections {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.footer-section {
  text-align: center;
  width: 100%;
}
.footer-section h3 {
  color: var(--primary);
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  text-align: center;
}
.footer-section .footer-links {
  display: flex;
  flex-direction: row;
  gap: var(--space-lg);
  justify-content: center;
  margin-bottom: var(--space-md);
  text-align: center;
  flex-wrap: wrap;
}
.footer-section .footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--duration-normal) var(--easing);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.footer-section .footer-links a:hover {
  color: var(--primary);
  transform: translateX(5px);
}
.social-link::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  background-size: contain;
  background-repeat: no-repeat;
  vertical-align: middle;
}
.social-link.qq-group::before {
  background-image: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M18 21a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4"></path><circle cx="12" cy="7" r="4"></circle><path d="M12 11v4"></path><path d="m8 15 4 4 4-4"></path></svg>');
}
.social-link.bilibili::before {
  background-image: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 2L2 7l10 5 10-5-10-5z"></path><path d="M2 17l10 5 10-5"></path><path d="M2 12l10 5 10-5"></path></svg>');
}
.social-link.minebbs::before {
  background-image: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 2L2 7l10 5 10-5-10-5z"></path><circle cx="12" cy="17" r="4"></circle><path d="M12 11v4"></path></svg>');
}
.footer-copyright {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
@media (max-width: 768px) {
  .nav-links {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s ease-out, visibility 0.3s ease-out, transform 0.3s ease-out;
  }
  
  .nav-links.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  .footer-links {
    flex-direction: column;
    gap: var(--space-md);
  }
}
@media (max-width: 480px) {
  :root {
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 2.5rem;
  }
  
  .hero-content {
    padding: var(--space-md);
  }
  
  .modal {
    padding: var(--space-lg);
  }
}
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  color: white;
  font-weight: var(--font-weight-medium);
  z-index: 4000;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease-out;
  min-width: 300px;
  max-width: 400px;
  animation: slideInRight 0.3s ease-out forwards;
  margin-bottom: 0;
}
.notification:nth-of-type(2) {
  top: 100px;
}
.notification:nth-of-type(3) {
  top: 180px;
}
.notification:nth-of-type(4) {
  top: 260px;
}
.notification span:first-child {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 16px;
  font-weight: bold;
}
.notification.error {
  background: rgba(255, 107, 107, 0.5);
  border-left: 4px solid var(--secondary);
}
.notification.error span:first-child {
  background: var(--secondary);
  color: white;
}
.notification.warning {
  background: rgba(255, 210, 63, 0.5);
  border-left: 4px solid var(--primary);
  color: var(--dark);
}
.notification.warning span:first-child {
  background: var(--primary);
  color: var(--dark);
}
.notification.success {
  background: rgba(76, 175, 80, 0.5);
  border-left: 4px solid #4CAF50;
}
.notification.success span:first-child {
  background: #4CAF50;
  color: white;
}
.notification.info {
  background: rgba(96, 165, 250, 0.5);
  border-left: 4px solid #60a5fa;
}
.notification.info span:first-child {
  background: #60a5fa;
  color: white;
}
.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255, 210, 63, 0.3);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: var(--space-lg) auto;
}
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
.error-message {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--secondary);
  color: white;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  z-index: 1000;
  animation: slideInRight 0.3s ease-out;
}
.scroll-animate {
  will-change: transform, opacity;
}
.scroll-animate.visible {
  will-change: auto;
}