/* === AIQC Website === */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary: #6366f1;
  --accent: #06b6d4;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --safe-top: env(safe-area-inset-top, 0px);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--gray-800);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }

/* === Typography === */
.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.3s ease;
  padding-top: var(--safe-top);
}
.header.scrolled {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  border-bottom: 1px solid var(--gray-100);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
@media (min-width: 1024px) { .header-inner { height: 80px; } }

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--dark);
}
.logo-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.75rem;
  font-weight: 800;
}
.logo span { color: var(--primary); }

/* Navigation */
.nav { display: none; gap: 0.25rem; }
@media (min-width: 1024px) { .nav { display: flex; } }
.nav a {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  border-radius: 0.5rem;
  transition: all 0.2s;
}
.nav a:hover { color: var(--gray-900); background: var(--gray-50); }
.nav a.active { color: var(--primary); background: rgba(37,99,235,0.05); }

.header-actions { display: flex; align-items: center; gap: 0.75rem; }

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  color: var(--gray-500);
  background: transparent;
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-btn:hover { color: var(--gray-700); border-color: var(--gray-300); }

.cta-btn {
  display: none;
  align-items: center;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: white;
  background: var(--primary);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 1px 3px rgba(37,99,235,0.2);
}
.cta-btn:hover { background: var(--primary-dark); box-shadow: 0 4px 12px rgba(37,99,235,0.3); }
@media (min-width: 1024px) { .cta-btn { display: inline-flex; } }

.menu-btn {
  display: block;
  padding: 0.5rem;
  background: none;
  border: none;
  color: var(--gray-600);
  cursor: pointer;
}
@media (min-width: 1024px) { .menu-btn { display: none; } }

/* Mobile Menu */
.mobile-menu {
  display: none;
  border-top: 1px solid var(--gray-100);
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(12px);
  padding: 1rem 1.5rem;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  border-radius: 0.5rem;
  transition: all 0.2s;
}
.mobile-menu a:hover { color: var(--gray-900); background: var(--gray-50); }
.mobile-menu a.active { color: var(--primary); background: rgba(37,99,235,0.05); }
.mobile-menu .cta-btn { display: flex; margin-top: 0.5rem; justify-content: center; }

/* === Hero === */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  background: var(--dark);
  overflow: hidden;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-size: 50px 50px;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
}
.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(99,102,241,0.1), rgba(6,182,212,0.05));
  background-size: 200% 200%;
  animation: gradientMove 8s ease infinite;
}
@keyframes gradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.hero-orbs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.2;
  animation: float 6s ease-in-out infinite;
}
.hero-orb:nth-child(1) {
  width: 300px; height: 300px;
  background: var(--primary);
  top: 10%; left: 10%;
}
.hero-orb:nth-child(2) {
  width: 400px; height: 400px;
  background: var(--secondary);
  bottom: 10%; right: 10%;
  animation-delay: 2s;
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}
.hero-content {
  position: relative;
  padding: 6rem 0 4rem;
  z-index: 1;
}
.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 1024px) { .hero-grid { grid-template-columns: 1fr 1fr; } }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  color: rgba(255,255,255,0.8);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}
.hero-badge-dot {
  width: 0.5rem; height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: white;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--gray-300);
  max-width: 36rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-weight: 600;
  color: white;
  background: var(--primary);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(37,99,235,0.3);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.75rem;
  font-weight: 500;
  color: white;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-outline:hover { background: rgba(255,255,255,0.2); }

.hero-visual {
  display: none;
  justify-content: center;
}
@media (min-width: 1024px) { .hero-visual { display: flex; } }
.hero-box {
  width: 100%;
  max-width: 28rem;
  aspect-ratio: 1;
  position: relative;
}
.hero-box-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,0.3), rgba(99,102,241,0.3));
  border-radius: 1.5rem;
}
.hero-box-content {
  position: absolute;
  inset: 1rem;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(16px);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.1);
}
.hero-box-inner { text-align: center; padding: 2rem; }
.hero-box-icon {
  width: 4rem; height: 4rem;
  margin: 0 auto 1rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-box-icon svg { width: 2rem; height: 2rem; color: white; }
.hero-box-label {
  color: rgba(255,255,255,0.5);
  font-family: monospace;
  font-size: 0.75rem;
  margin-top: 0.5rem;
}
.hero-status {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
}
.hero-status-dot {
  width: 0.5rem; height: 0.5rem;
  border-radius: 50%;
  background: #4ade80;
  animation: pulse 2s infinite;
}
.hero-status-text {
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
}

/* === Section Base === */
section { padding: 5rem 0; }
@media (min-width: 768px) { section { padding: 6rem 0; } }

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.75rem;
}
.section-subtitle {
  text-align: center;
  color: var(--gray-500);
  font-size: 1.125rem;
  max-width: 36rem;
  margin: 0 auto 3rem;
}

/* === Stats Bar === */
.stats-bar {
  position: relative;
  z-index: 10;
  margin-top: -2.5rem;
  padding: 0 1.5rem;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  border-radius: 1rem;
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.3);
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
@media (min-width: 768px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }
.stat-item { text-align: center; }
.stat-value {
  font-size: clamp(1.25rem, 3vw, 1.875rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.25rem;
}
.stat-label { font-size: 0.875rem; color: var(--gray-500); }

/* === Problems === */
.section-gray { background: var(--gray-50); }

.cards-3 {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 768px) { .cards-3 { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: white;
  border-radius: 0.75rem;
  padding: 2rem;
  border: 1px solid var(--gray-100);
  transition: all 0.2s;
}
.card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
.card-icon {
  width: 3rem; height: 3rem;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.card-icon.red { background: #fef2f2; }
.card-icon.red svg { color: #ef4444; }
.card-icon.blue { background: #eff6ff; }
.card-icon.blue svg { color: var(--primary); }
.card-icon.purple { background: #f5f3ff; }
.card-icon.purple svg { color: var(--secondary); }
.card-icon.green { background: #f0fdf4; }
.card-icon.green svg { color: #22c55e; }
.card-icon.cyan { background: #ecfeff; }
.card-icon.cyan svg { color: var(--accent); }
.card-icon.orange { background: #fff7ed; }
.card-icon.orange svg { color: #f97316; }

.card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.card p {
  color: var(--gray-500);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* === Product Section === */
.cards-product {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 768px) { .cards-product { grid-template-columns: repeat(3, 1fr); } }

.product-card {
  background: white;
  border-radius: 1rem;
  padding: 2rem;
  border: 1px solid var(--gray-100);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.product-card:hover {
  border-color: rgba(37,99,235,0.2);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.product-card-icon {
  width: 3.5rem; height: 3.5rem;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  transition: transform 0.3s;
}
.product-card:hover .product-card-icon { transform: scale(1.1); }
.product-card-icon.brain { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.product-card-icon.nerve { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.product-card-icon.body { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.product-card-icon svg { width: 1.75rem; height: 1.75rem; color: white; }

.product-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.75rem; }
.product-card p { color: var(--gray-500); font-size: 0.875rem; line-height: 1.7; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary);
  margin-top: 1rem;
  transition: gap 0.2s;
}
.card-link:hover { gap: 0.5rem; }

/* === Architecture Diagram === */
.arch-section {
  margin-top: 4rem;
}
.arch-box {
  background: linear-gradient(135deg, var(--gray-900), var(--dark-2));
  border-radius: 1.5rem;
  padding: 2rem;
  overflow: hidden;
  position: relative;
}
@media (min-width: 768px) { .arch-box { padding: 3rem; } }
.arch-grid {
  display: grid;
  gap: 0.75rem;
  position: relative;
}
@media (min-width: 768px) { .arch-grid { grid-template-columns: repeat(5, 1fr); } }
.arch-item {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 0.75rem;
  padding: 1rem;
  text-align: center;
  transition: background 0.2s;
}
.arch-item:hover { background: rgba(255,255,255,0.1); }
.arch-item-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-light);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}
.arch-item-desc {
  font-size: 0.625rem;
  color: var(--gray-400);
  line-height: 1.4;
}
.arch-arrow {
  display: none;
  color: rgba(37,99,235,0.4);
  align-self: center;
}
@media (min-width: 768px) { .arch-arrow { display: flex; } }

/* === Solutions === */
.card-ref {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-top: 0.5rem;
}

/* === Dark Section === */
.section-dark {
  background: var(--dark);
  color: white;
  position: relative;
  overflow: hidden;
}
.section-dark .bg-grid {
  position: absolute;
  inset: 0;
  opacity: 0.2;
  background-size: 50px 50px;
  background-image: linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  pointer-events: none;
}
.section-dark .container { position: relative; }
.section-dark .section-subtitle { color: var(--gray-400); }
.section-dark .card {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
}
.section-dark .card:hover { background: rgba(255,255,255,0.1); }
.section-dark .card h3 { color: white; }
.section-dark .card p { color: var(--gray-400); }

/* === CTA === */
.cta-section {
  position: relative;
  padding: 5rem 0;
  background: var(--dark);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(99,102,241,0.1), rgba(6,182,212,0.05));
}
.cta-content {
  position: relative;
  text-align: center;
  max-width: 40rem;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: white;
  margin-bottom: 1rem;
}
.cta-content p {
  color: var(--gray-300);
  margin-bottom: 2rem;
}
.btn-large {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: white;
  background: var(--primary);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 14px rgba(37,99,235,0.4);
}
.btn-large:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37,99,235,0.4); }

/* === Footer === */
.footer {
  background: var(--dark);
  color: var(--gray-300);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  gap: 2.5rem;
}
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; } }
.footer-brand p {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin: 1rem 0;
  line-height: 1.6;
}
.footer-social {
  display: flex;
  gap: 0.75rem;
}
.footer-social a {
  width: 2.25rem; height: 2.25rem;
  border-radius: 50%;
  background: var(--gray-700);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.footer-social a:hover { background: var(--primary); }

.footer h3 {
  color: white;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 0.5rem; }
.footer ul a {
  font-size: 0.875rem;
  color: var(--gray-400);
  transition: color 0.2s;
}
.footer ul a:hover { color: white; }

.footer-bottom {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
@media (min-width: 640px) {
  .footer-bottom { flex-direction: row; justify-content: space-between; }
}
.footer-bottom p { font-size: 0.875rem; color: var(--gray-500); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-size: 0.875rem; color: var(--gray-500); transition: color 0.2s; }
.footer-links a:hover { color: var(--gray-300); }

/* === Page Hero === */
.page-hero {
  position: relative;
  padding: 6rem 0 3rem;
  background: linear-gradient(135deg, var(--dark), var(--dark-2));
  overflow: hidden;
}
.page-hero .bg-grid {
  position: absolute;
  inset: 0;
  opacity: 0.2;
  background-size: 50px 50px;
  background-image: linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
}
.page-hero .container { position: relative; text-align: center; }
.page-hero h1 { color: white; font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 0.75rem; }
.page-hero p { color: var(--gray-300); font-size: 1.125rem; max-width: 36rem; margin: 0 auto; }

/* === Contact Form === */
.form-section { padding: 5rem 0; }
.form-grid { display: grid; gap: 3rem; }
@media (min-width: 1024px) { .form-grid { grid-template-columns: 1fr 1fr; } }

.form-group { margin-bottom: 1.5rem; }
.form-row { display: grid; gap: 1.5rem; }
@media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; } }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}
.form-input, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-200);
  border-radius: 0.75rem;
  font-size: 0.875rem;
  transition: all 0.2s;
  outline: none;
  font-family: inherit;
}
.form-input:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-textarea { resize: vertical; min-height: 120px; }

.contact-info {
  background: var(--gray-50);
  border-radius: 1rem;
  padding: 2rem;
}
.contact-info-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.contact-info-icon {
  width: 3rem; height: 3rem;
  border-radius: 0.75rem;
  background: rgba(37,99,235,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info-icon svg { width: 1.25rem; height: 1.25rem; color: var(--primary); }
.contact-info h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.25rem; }
.contact-info p { font-size: 0.875rem; color: var(--gray-500); }

/* === Case Study Style === */
.case-card {
  background: var(--gray-50);
  border-radius: 1.5rem;
  overflow: hidden;
  transition: box-shadow 0.3s;
  margin-bottom: 2rem;
}
.case-card:hover { box-shadow: 0 12px 40px rgba(0,0,0,0.1); }
.case-grid { display: grid; }
@media (min-width: 1024px) { .case-grid { grid-template-columns: 2fr 3fr; } }
.case-info {
  padding: 2rem;
  background: linear-gradient(135deg, rgba(37,99,235,0.05), rgba(99,102,241,0.05));
}
.case-info .icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.case-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  margin-bottom: 0.5rem;
}
.case-info h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.5rem; }
.case-info p { color: var(--gray-600); font-size: 0.875rem; margin-bottom: 1rem; }
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding: 2rem;
}
.case-metric { text-align: center; }
.case-metric-value { font-size: 1.25rem; font-weight: 700; color: var(--dark); }
.case-metric-label { font-size: 0.75rem; color: var(--gray-400); margin-top: 0.25rem; }

/* === Resource Cards === */
.resource-grid { display: grid; gap: 1.5rem; }
@media (min-width: 768px) { .resource-grid { grid-template-columns: repeat(2, 1fr); } }
.resource-card {
  background: var(--gray-50);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.2s;
  cursor: pointer;
}
.resource-card:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.08); }
.resource-card-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; }
.resource-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  font-family: monospace;
  padding: 0.25rem 0.75rem;
  background: white;
  border-radius: 999px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  color: var(--gray-500);
}

/* === Feature Grid (Product page) === */
.feature-grid {
  display: grid;
  gap: 4rem;
}
.feature-row {
  display: grid;
  gap: 2rem;
  align-items: center;
}
@media (min-width: 1024px) { .feature-row { grid-template-columns: 1fr 1fr; } }
.feature-row.reverse .feature-visual { order: 1; }
@media (min-width: 1024px) { .feature-row.reverse .feature-visual { order: 0; } }

.feature-visual {
  aspect-ratio: 1;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
}

.check-list { list-style: none; }
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.5rem 0;
  font-size: 0.9375rem;
  color: var(--gray-600);
}
.check-list li::before {
  content: '';
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.125rem;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%232563eb' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* === Timeline === */
.timeline {
  position: relative;
  max-width: 36rem;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 1rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--secondary));
}
.timeline-item { position: relative; padding-left: 3rem; margin-bottom: 2rem; }
.timeline-dot {
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: white;
  border: 2px solid var(--primary);
}
.timeline-content {
  background: var(--gray-50);
  border-radius: 0.75rem;
  padding: 1.25rem;
}
.timeline-content .stage {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

/* === Industry Solution Grid === */
.industry-row { margin-bottom: 4rem; }
.industry-grid {
  display: grid;
  gap: 1.5rem;
  align-items: center;
}
@media (min-width: 1024px) { .industry-grid { grid-template-columns: 1fr 1fr; } }

/* === Animations === */
.fade-in { opacity: 0; transform: translateY(30px); transition: all 0.6s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in-d1 { transition-delay: 0.1s; }
.fade-in-d2 { transition-delay: 0.2s; }
.fade-in-d3 { transition-delay: 0.3s; }
.fade-in-d4 { transition-delay: 0.4s; }
.fade-in-d5 { transition-delay: 0.5s; }

/* === SEO & Accessibility === */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* === Page hide/show === */
.page { display: none; }
.page.active { display: block; }

/* === Responsive === */
@media (max-width: 767px) {
  .cards-3, .cards-product { grid-template-columns: 1fr; }
  .case-metrics { grid-template-columns: repeat(3, 1fr); padding: 1.5rem; }
  .case-metric-value { font-size: 1rem; }
}

@media (max-width: 639px) {
  .stats-grid { padding: 1.5rem; gap: 1rem; }
  .case-metrics { grid-template-columns: repeat(3, 1fr); padding: 1rem; gap: 0.5rem; }
}