/* ============================================
   GNOC Anti-DDoS & IP-Transit Components
   ============================================ */

/* ============================================
   1. NAVIGATION BAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.95);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.1);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-left {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-menu li a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  padding: 0.5rem 0;
}

.navbar-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width 0.3s ease;
}

.navbar-menu li a:hover {
  color: var(--text-primary);
}

.navbar-menu li a:hover::after {
  width: 100%;
}

.navbar-menu li a.active {
  color: var(--accent-primary);
}

.navbar-menu li a.active::after {
  width: 100%;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.lang-switcher:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.lang-switcher svg {
  width: 20px;
  height: 20px;
  color: var(--accent-primary);
}

.lang-switcher span {
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
}

.lang-switcher.active {
  border-color: var(--accent-primary);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

/* Language Dropdown */
.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 100px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  z-index: 1001;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.lang-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown-item {
  display: block;
  width: 100%;
  padding: 0.6rem 1rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
}

.lang-dropdown-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.lang-dropdown-item.active {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================
   2. LOGO
   ============================================ */
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.5px;
  text-decoration: none;
  position: relative;
  filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.logo-icon {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-tertiary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-text {
  font-size: 1.3rem;
  font-weight: 600;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(200, 220, 255, 0.9) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.9;
}

.logo:hover {
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
  transform: scale(1.05);
}

.logo::before {
  content: '';
  position: absolute;
  inset: -5px;
  background: var(--accent-gradient);
  opacity: 0;
  filter: blur(20px);
  transition: opacity 0.3s ease;
  z-index: -1;
}

.logo:hover::before {
  opacity: 0.3;
}

/* ============================================
   3. BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.btn:active {
  transform: scale(0.98);
}

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #00e5ff 0%, #00aadd 100%);
  box-shadow: 0 6px 25px rgba(0, 212, 255, 0.5);
  transform: translateY(-2px);
}

/* Secondary Button */
.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-primary);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

/* Outline Button */
.btn-outline {
  background: transparent;
  color: var(--accent-primary);
  border: 2px solid var(--accent-primary);
}

.btn-outline:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

/* Button Sizes */
.btn-sm {
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: 1.125rem;
}

/* ============================================
   4. CARDS
   ============================================ */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 12px;
  padding: 1px;
  background: var(--accent-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 40px rgba(0, 212, 255, 0.2);
}

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

/* Service Card */
.service-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  transition: all 0.3s ease;
  position: relative;
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
  border-radius: 16px 16px 0 0;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-primary);
  box-shadow: 0 15px 50px rgba(0, 212, 255, 0.25);
}

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

.service-card-icon {
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 44, 191, 0.2));
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 16px;
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.service-card-icon::before {
  content: '';
  position: absolute;
  inset: -50%;
  background: conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.3), transparent 30%);
  animation: iconRotate 3s linear infinite;
  z-index: -2;
}

.service-card-icon::after {
  content: '';
  position: absolute;
  inset: 2px;
  background: var(--bg-secondary);
  border-radius: 14px;
  z-index: -1;
}

.service-card:hover .service-card-icon::before {
  animation-duration: 1.5s;
}

.service-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.service-card-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* Service Features List */
.service-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.service-features li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: rgba(0, 212, 255, 0.15);
  color: var(--accent-primary);
  border-radius: 50%;
  font-size: 0.7rem;
  flex-shrink: 0;
}

/* Feature Card */
.feature-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s ease;
  text-align: center;
}

.feature-card:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-tertiary);
  box-shadow: 0 8px 30px rgba(0, 255, 136, 0.15);
}

.feature-card-icon {
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 44, 191, 0.2));
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 16px;
  margin: 0 auto 1.25rem;
  position: relative;
  overflow: hidden;
  font-size: 1.75rem;
  color: var(--accent-primary);
  /* 确保内容在伪元素之上 */
  isolation: isolate;
}

.feature-card-icon::before {
  content: '';
  position: absolute;
  inset: -50%;
  background: conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.3), transparent 30%);
  animation: iconRotate 3s linear infinite;
  z-index: -2;
}

.feature-card-icon::after {
  content: '';
  position: absolute;
  inset: 2px;
  background: var(--bg-secondary);
  border-radius: 14px;
  z-index: -1;
}

.feature-card-icon svg {
  position: relative;
  z-index: 1;
  width: 32px;
  height: 32px;
  color: var(--accent-primary);
}

.feature-card:hover .feature-card-icon::before {
  animation-duration: 1.5s;
}

.feature-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.feature-card-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Stat Card */
.stat-card {
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.stat-card:hover::before {
  left: 100%;
}

.stat-card:hover {
  transform: scale(1.05);
  border-color: var(--accent-primary);
  box-shadow: 0 10px 40px rgba(0, 212, 255, 0.2);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.2;
  color: #00d4ff;
  background: none !important;
  -webkit-text-fill-color: #00d4ff !important;
}

.stat-number .counter {
  color: #00d4ff !important;
  font-size: 2.5rem;
  font-weight: 700;
  background: none !important;
  -webkit-text-fill-color: #00d4ff !important;
}

.stat-number .stat-suffix {
  color: #00d4ff !important;
  font-size: 1.5rem;
  font-weight: 400;
  background: none !important;
  -webkit-text-fill-color: #00d4ff !important;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ============================================
   5. FOOTER
   ============================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: 6rem;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.footer-section-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-links a:hover {
  color: var(--accent-primary);
  transform: translateX(5px);
}

/* Footer Contact List */
.footer-contact {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.footer-contact li i {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent-primary);
  border-radius: 8px;
  font-size: 0.9rem;
}

.footer-contact li a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-contact li a:hover {
  color: var(--text-primary);
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-social-link:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
  transform: translateY(-3px);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copyright {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-legal {
  display: flex;
  gap: 2rem;
}

.footer-legal a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-legal a:hover {
  color: var(--accent-primary);
}

/* ============================================
   6. HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 2rem) 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero-title-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   7. FORM STYLES
   ============================================ */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1), 0 0 15px rgba(0, 212, 255, 0.2);
  background: var(--bg-secondary);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300d4ff' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-error {
  color: #ff4444;
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: none;
}

.form-group.error .form-input,
.form-group.error .form-textarea,
.form-group.error .form-select {
  border-color: #ff4444;
}

.form-group.error .form-error {
  display: block;
}

.form-checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.form-checkbox {
  width: 20px;
  height: 20px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

.form-checkbox-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
  cursor: pointer;
}

/* ============================================
   8. RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .navbar-container {
    padding: 0 1.5rem;
  }

  .navbar-menu {
    gap: 2rem;
  }

  .hero-container {
    padding: 0 1.5rem;
  }
}

@media (max-width: 768px) {
  /* Mobile Navigation */
  .mobile-menu-toggle {
    display: flex;
  }

  .navbar-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-color);
  }

  .navbar-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .navbar-menu li a {
    font-size: 1.1rem;
  }

  .navbar-left {
    gap: 1rem;
  }

  .navbar-right {
    gap: 1rem;
  }

  /* Hero */
  .hero {
    padding: calc(var(--nav-height) + 2rem) 1.5rem 3rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

  /* Cards */
  .service-card,
  .stat-card {
    padding: 2rem;
  }

  .stat-number {
    font-size: 2.5rem;
  }

  /* Footer */
  .footer {
    padding: 3rem 0 1.5rem;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-legal {
    flex-direction: column;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .navbar-container {
    padding: 0 1rem;
  }

  .logo {
    font-size: 1.5rem;
  }

  .lang-switcher {
    padding: 0.5rem 0.75rem;
  }

  .hero {
    padding: calc(var(--nav-height) + 1rem) 1rem 2rem;
  }

  .card,
  .service-card,
  .feature-card,
  .stat-card {
    padding: 1.5rem;
  }

  .service-card-icon {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }

  .footer-container {
    padding: 0 1rem;
  }
}

/* ============================================
   9. UTILITY CLASSES
   ============================================ */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  text-align: center;
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 3rem;
  text-align: center;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glow {
  filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
}

/* ============================================
   10. ANIMATION EFFECTS
   ============================================ */

/* Hero Background Animation */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

.gradient-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(123, 44, 191, 0.15) 0%, transparent 70%);
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* Service Icon Animation */
.service-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 44, 191, 0.2));
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 16px;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
}

.service-icon::before {
  content: '';
  position: absolute;
  inset: -50%;
  background: conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.3), transparent 30%);
  animation: iconRotate 3s linear infinite;
}

.service-icon::after {
  content: '';
  position: absolute;
  inset: 2px;
  background: var(--bg-secondary);
  border-radius: 14px;
  z-index: 1;
}

.service-icon i, .service-icon svg {
  position: relative;
  z-index: 2;
  font-size: 2rem;
  color: var(--accent-primary);
}

@keyframes iconRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.service-card:hover .service-icon::before {
  animation-duration: 1.5s;
}

/* Stat Icon */
.stat-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 12px;
  margin-right: 1rem;
  flex-shrink: 0;
}

.stat-icon i {
  font-size: 1.5rem;
  color: white;
}

.stat-item {
  display: flex;
  align-items: center;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-3px);
  border-color: var(--accent-primary);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.15);
}

/* Feature Icon */
.feature-icon {
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  position: relative;
}

.feature-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.15), rgba(0, 212, 255, 0.15));
  border-radius: 50%;
}

.feature-icon i {
  font-size: 2rem;
  color: var(--accent-tertiary);
  position: relative;
  z-index: 1;
}

/* Stats Section */
.stats {
  margin-top: 3rem;
  margin-bottom: 4rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 992px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .stat-number {
    font-size: 2.5rem;
  }

  .stat-number .counter {
    font-size: 2.5rem;
    min-width: 40px;
  }

  .stat-suffix {
    font-size: 1.2rem;
  }
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

@media (max-width: 768px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

/* Services Section */
.services {
  padding: 6rem 0 2rem;
}

/* Why Choose Us Section */
.why-choose-us {
  padding: 5rem 0;
}

/* Contact Section */
.contact {
  padding: 5rem 0;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 992px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   11. OPTIMIZED LIST STYLES
   ============================================ */

/* Base Feature List */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.625rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
  transition: all 0.3s ease;
  position: relative;
}

.feature-list li:hover {
  color: var(--text-primary);
  transform: translateX(5px);
}

/* Checkmark List */
.check-list li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  min-width: 22px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 255, 136, 0.15));
  color: var(--accent-primary);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid rgba(0, 212, 255, 0.3);
  box-shadow: 0 2px 8px rgba(0, 212, 255, 0.15);
  transition: all 0.3s ease;
}

.check-list li:hover::before {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.35), rgba(0, 255, 136, 0.25));
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
  transform: scale(1.1);
}

/* Bullet List */
.bullet-list li::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  min-width: 8px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
  border-radius: 50%;
  margin-top: 0.5rem;
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.4);
  transition: all 0.3s ease;
}

.bullet-list li:hover::before {
  transform: scale(1.3);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.6);
}

/* List Animation - Staggered fade-in */
.feature-list.animate-list li {
  opacity: 0;
  transform: translateX(-20px);
  animation: listItemFadeIn 0.5s ease forwards;
}

.feature-list.animate-list li:nth-child(1) { animation-delay: 0.1s; }
.feature-list.animate-list li:nth-child(2) { animation-delay: 0.15s; }
.feature-list.animate-list li:nth-child(3) { animation-delay: 0.2s; }
.feature-list.animate-list li:nth-child(4) { animation-delay: 0.25s; }
.feature-list.animate-list li:nth-child(5) { animation-delay: 0.3s; }
.feature-list.animate-list li:nth-child(6) { animation-delay: 0.35s; }
.feature-list.animate-list li:nth-child(7) { animation-delay: 0.4s; }
.feature-list.animate-list li:nth-child(8) { animation-delay: 0.45s; }

@keyframes listItemFadeIn {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Compact List - Less spacing */
.feature-list.compact li {
  padding: 0.4rem 0;
  font-size: 0.9rem;
}

.feature-list.compact li::before {
  width: 18px;
  height: 18px;
  min-width: 18px;
  font-size: 0.65rem;
}

/* Large List - More spacing */
.feature-list.large li {
  padding: 0.875rem 0;
  font-size: 1rem;
}

.feature-list.large li::before {
  width: 26px;
  height: 26px;
  min-width: 26px;
  font-size: 0.85rem;
}

/* List with dividers */
.feature-list.with-dividers li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-list.with-dividers li:last-child {
  border-bottom: none;
}

/* Two-column list layout */
.feature-list.two-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem 2rem;
}

@media (max-width: 576px) {
  .feature-list.two-columns {
    grid-template-columns: 1fr;
  }
}

/* Pricing feature list - special styling for pricing cards */
.pricing-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}

.pricing-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.4;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  transition: all 0.3s ease;
}

.pricing-list li:last-child {
  border-bottom: none;
}

.pricing-list li:hover {
  color: var(--text-primary);
  background: rgba(0, 212, 255, 0.03);
  margin: 0 -1rem;
  padding-left: 1rem;
  padding-right: 1rem;
  border-radius: 8px;
}

.pricing-list li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.2), rgba(0, 212, 255, 0.15));
  color: var(--accent-tertiary);
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
  transition: all 0.3s ease;
}

.pricing-list li:hover::before {
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.35), rgba(0, 212, 255, 0.25));
  transform: scale(1.15);
}

/* ============================================
   12. ARCHITECTURE DIAGRAM ICONS
   ============================================ */

.arch-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(123, 44, 191, 0.2));
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: all 0.3s ease;
}

.arch-icon::before {
  content: '';
  position: absolute;
  inset: -50%;
  background: conic-gradient(from 0deg, transparent, rgba(0, 212, 255, 0.3), transparent 30%);
  animation: iconRotate 3s linear infinite;
  z-index: -2;
}

.arch-icon::after {
  content: '';
  position: absolute;
  inset: 2px;
  background: var(--bg-secondary);
  border-radius: 14px;
  z-index: -1;
}

.arch-icon:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
  border-color: var(--accent-primary);
}

.arch-icon:hover::before {
  animation-duration: 1.5s;
}

/* Architecture Arrow */
.arch-arrow {
  color: var(--accent-primary);
  font-size: 2rem;
  opacity: 0.8;
  transition: all 0.3s ease;
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.arch-arrow:hover {
  opacity: 1;
  transform: translateX(5px);
}