/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #6C3AED;
  --color-primary-dark: #5B21B6;
  --color-primary-light: #8B5CF6;
  --color-primary-subtle: #EDE9FE;
  --color-accent: #F59E0B;
  --color-accent-dark: #D97706;
  --color-success: #10B981;
  --color-danger: #EF4444;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8F7FF;
  --color-bg-dark: #0F0A1F;
  --color-text: #1E1B4B;
  --color-text-secondary: #6B7280;
  --color-text-light: #9CA3AF;
  --color-border: #E5E7EB;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ===== LAYOUT ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-bg-dark);
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-dark .section-header h2 {
  color: #fff;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.section-dark .section-header p {
  color: rgba(255,255,255,0.7);
}

.section-tag {
  display: inline-block;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-tag.light {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.9);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  color: var(--color-primary);
  display: flex;
}

.logo-text {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-links {
  display: none;
  flex-direction: column;
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  height: 100vh;
  background: #fff;
  padding: 80px 32px 32px;
  box-shadow: var(--shadow-xl);
  gap: 4px;
}

.nav-links.active {
  display: flex;
}

.nav-links a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.nav-cta {
  background: var(--color-primary) !important;
  color: #fff !important;
  text-align: center;
  margin-top: 8px;
}

.nav-cta:hover {
  background: var(--color-primary-dark) !important;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(108, 58, 237, 0.3);
}

.btn-outline {
  border-color: var(--color-border);
  background: transparent;
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
}

.btn-white:hover {
  background: var(--color-primary-subtle);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255,255,255,0.3);
}

.btn-ghost {
  border-color: rgba(255,255,255,0.3);
  color: #fff;
  background: transparent;
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

/* ===== HERO ===== */
.hero {
  padding: 120px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 50%, #F0EBFF 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108,58,237,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

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

.stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  background: var(--color-border);
  align-self: stretch;
  display: none;
}

/* Language toggle */
.lang-toggle-bar {
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 8px 12px 4px;
  background: #1a1a2e;
  border-radius: 26px 26px 0 0;
}

.lang-btn {
  font-family: var(--font-family);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 16px;
  border: none;
  border-radius: 100px;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
  color: rgba(255,255,255,0.5);
}

.lang-btn.active {
  background: var(--color-primary);
  color: #fff;
}

.lang-btn:not(.active):hover {
  color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.1);
}

.lang-conversation {
  display: none;
  flex-direction: column;
  gap: 12px;
}

.lang-conversation.active {
  display: flex;
}

/* Phone mockup */
.hero-visual {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 320px;
  background: #1a1a2e;
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-xl), 0 0 0 2px rgba(255,255,255,0.1);
  position: relative;
}

.phone-mockup::before {
  display: none;
}

.phone-screen {
  background: #fff;
  border-radius: 0 0 26px 26px;
  padding: 20px 16px 24px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-bubble {
  display: flex;
  gap: 8px;
  max-width: 90%;
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
}

.chat-bubble:nth-child(1) { animation-delay: 0.3s; }
.chat-bubble:nth-child(2) { animation-delay: 0.8s; }
.chat-bubble:nth-child(3) { animation-delay: 1.3s; }
.chat-bubble:nth-child(4) { animation-delay: 1.8s; }
.chat-bubble:nth-child(5) { animation-delay: 2.3s; }

.chat-bubble.customer {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-avatar {
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: 700;
  flex-shrink: 0;
}

.chat-text {
  background: var(--color-bg-alt);
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-text);
}

.chat-bubble.customer .chat-text {
  background: var(--color-primary);
  color: #fff;
  border-radius: 16px;
}

.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  background: var(--color-bg-alt);
  border-radius: 16px;
  width: fit-content;
  animation: fadeInUp 0.5s ease 2.8s forwards;
  opacity: 0;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  background: var(--color-text-light);
  border-radius: 50%;
  animation: typingDot 1.4s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes typingDot {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-4px); opacity: 1; }
}

/* ===== PROBLEM SECTION ===== */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.problem-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: var(--transition);
}

.problem-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.problem-icon {
  width: 48px;
  height: 48px;
  background: #FEE2E2;
  color: var(--color-danger);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.problem-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.problem-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ===== SOLUTION SECTION ===== */
.solution-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.solution-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  opacity: 0;
  transition: var(--transition);
}

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

.solution-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.solution-number {
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--color-primary-light);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.solution-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.solution-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ===== HOW IT WORKS ===== */
.flow-steps {
  max-width: 640px;
  margin: 0 auto;
}

.flow-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.flow-icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.flow-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.flow-content p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.flow-connector {
  width: 2px;
  height: 32px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-primary-light));
  margin-left: 27px;
  border-radius: 2px;
}

/* ===== CUSTOMERS ===== */
.customer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.customer-card {
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--color-border);
}

.customer-card.primary-customer {
  background: linear-gradient(135deg, var(--color-primary-subtle) 0%, #fff 100%);
  border-color: var(--color-primary-light);
}

.customer-card.secondary-customer {
  background: #fff;
}

.customer-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.customer-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.customer-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.customer-card li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  padding-left: 24px;
  position: relative;
}

.customer-card li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary-light);
}

/* ===== ROI SECTION ===== */
.roi-calculator {
  max-width: 800px;
  margin: 0 auto;
}

.roi-scenario {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  margin-bottom: 32px;
}

.roi-scenario h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.8);
}

.roi-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.roi-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.roi-label {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
}

.roi-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
}

.roi-value.highlight {
  color: var(--color-accent);
}

.roi-arrow {
  color: rgba(255,255,255,0.3);
  transform: rotate(90deg);
}

.roi-result-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.roi-result-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.roi-result-card.accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-color: transparent;
}

.roi-result-label {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.6);
  display: block;
  margin-bottom: 4px;
}

.roi-result-card.accent .roi-result-label {
  color: rgba(255,255,255,0.8);
}

.roi-result-value {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  display: block;
}

.roi-result-sub {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
}

.roi-result-card.accent .roi-result-sub {
  color: rgba(255,255,255,0.7);
}

/* ===== MARKET ===== */
.market-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.market-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  text-align: center;
  transition: var(--transition);
}

.market-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.market-card.featured {
  background: var(--color-primary);
  color: #fff;
  border-color: transparent;
}

.market-number {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.market-card.featured .market-number {
  color: #fff;
}

.market-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.market-card.featured p {
  color: rgba(255,255,255,0.8);
}

/* ===== PRICING ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.pricing-card {
  background: #fff;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: 100px;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-tier {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.pricing-for {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.pricing-amount {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-bottom: 28px;
}

.price-currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.price-value {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.price-period {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.pricing-features li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  padding-left: 28px;
  position: relative;
}

.pricing-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  width: 16px;
  height: 16px;
  background: var(--color-success);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/contain no-repeat;
}

.pricing-note {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-top: 32px;
}

/* ===== ARCHITECTURE ===== */
.arch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.arch-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: var(--transition);
}

.arch-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.arch-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.arch-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.arch-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ===== DIFFERENTIATORS ===== */
.diff-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.diff-card {
  text-align: center;
  padding: 32px 24px;
}

.diff-icon {
  width: 64px;
  height: 64px;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.diff-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.diff-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ===== FAQ SECTION ===== */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--color-primary-light);
}

.faq-item.open {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  line-height: 1.5;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-chevron {
  flex-shrink: 0;
  color: var(--color-text-light);
  transition: transform 0.3s ease;
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== CTA SECTION ===== */
.section-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  text-align: center;
  padding: 80px 0;
}

.cta-content h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-content p {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}

.cta-trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.8);
}

.trust-item svg {
  color: rgba(255,255,255,0.9);
  flex-shrink: 0;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand .logo-icon {
  color: var(--color-primary-light);
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.7;
}

.footer-links h4 {
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.875rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
}

/* ===== SCROLL ANIMATIONS ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE — TABLET (640px+) ===== */
@media (min-width: 640px) {
  .container {
    padding: 0 32px;
  }

  .section {
    padding: 100px 0;
  }

  .problem-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .solution-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .customer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .roi-flow {
    flex-direction: row;
    justify-content: center;
  }

  .roi-arrow {
    transform: rotate(0deg);
  }

  .roi-result-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .market-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .arch-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .diff-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-divider {
    display: block;
  }

  .hero-stats {
    gap: 32px;
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

/* ===== RESPONSIVE — DESKTOP (960px+) ===== */
@media (min-width: 960px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex !important;
    flex-direction: row;
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    padding: 0;
    box-shadow: none;
    gap: 4px;
    align-items: center;
  }

  .nav-links a {
    font-size: 0.875rem;
    padding: 8px 14px;
  }

  .nav-cta {
    margin-top: 0 !important;
    margin-left: 8px;
    padding: 10px 20px !important;
    border-radius: var(--radius-sm) !important;
  }

  .hero .container {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

  .hero {
    padding: 0;
  }

  .problem-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .solution-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .arch-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .diff-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .roi-result-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== RESPONSIVE — LARGE DESKTOP (1200px+) ===== */
@media (min-width: 1200px) {
  .container {
    padding: 0 40px;
  }

  .section {
    padding: 120px 0;
  }

  .hero h1 {
    font-size: 3.75rem;
  }

  .phone-mockup {
    width: 360px;
  }

  .phone-screen {
    min-height: 460px;
  }
}