/* ===== CSS Variables ===== */
:root {
  --color-primary: #050505;
  --color-secondary: #070707;
  --color-accent: #c8c1bf;
  --color-purple: #5e5ce2;
  --color-blue-gray: #7789a1;
  --color-white: #ffffff;
  --color-card-bg: #0e0e10;
  --color-card-border: #1a1a1f;
  --color-text: #c8c1bf;
  --color-text-muted: #7789a1;
  --color-text-bright: #eae7e6;
  --gradient-purple: linear-gradient(135deg, #5e5ce2, #7b6cf6);
  --gradient-hero: linear-gradient(180deg, #0a0a12 0%, #050505 100%);
  --gradient-cta: linear-gradient(135deg, #5e5ce2 0%, #8b7cf7 50%, #5e5ce2 100%);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px rgba(94, 92, 226, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: 'Inter', 'Noto Sans SC', 'Noto Sans JP', 'Noto Sans KR', sans-serif;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-primary);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul, ol {
  list-style: none;
}

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

button {
  cursor: pointer;
  border: none;
  font-family: inherit;
  font-size: inherit;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Section Common ===== */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }
.fade-in-delay-5 { transition-delay: 0.5s; }
.fade-in-delay-6 { transition-delay: 0.6s; }

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

.header.scrolled {
  background: rgba(5, 5, 5, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  padding: 10px 0;
}

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

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-text-bright);
}

.header-logo img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-desktop a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}

.nav-desktop a:hover {
  color: var(--color-text-bright);
}

.nav-desktop a i {
  font-size: 0.8rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
}

.lang-switcher-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.lang-switcher-btn:hover {
  color: var(--color-text-bright);
  background: rgba(255, 255, 255, 0.05);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #141418;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 8px;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  box-shadow: var(--shadow-card);
  z-index: 100;
}

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

.lang-dropdown a {
  display: block;
  padding: 8px 14px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
}

.lang-dropdown a:hover,
.lang-dropdown a.current {
  background: rgba(94, 92, 226, 0.1);
  color: var(--color-purple);
}

/* CTA Button */
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--gradient-cta);
  background-size: 200% auto;
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-cta:hover {
  background-position: right center;
  box-shadow: 0 4px 20px rgba(94, 92, 226, 0.4);
  transform: translateY(-1px);
}

.btn-cta-secondary {
  background: transparent;
  border: 1px solid rgba(94, 92, 226, 0.4);
  color: var(--color-purple);
}

.btn-cta-secondary:hover {
  background: rgba(94, 92, 226, 0.1);
  border-color: var(--color-purple);
  box-shadow: 0 4px 20px rgba(94, 92, 226, 0.15);
}

.btn-cta-large {
  padding: 16px 40px;
  font-size: 1.1rem;
  border-radius: var(--radius-full);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-bright);
  border-radius: 2px;
  transition: all var(--transition);
}

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

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

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

/* Mobile Nav */
.nav-mobile {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, 0.98);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.nav-mobile.active {
  opacity: 1;
  visibility: visible;
}

.nav-mobile a {
  font-size: 1.3rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-mobile a:hover {
  color: var(--color-purple);
}

.nav-mobile .mobile-lang-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--color-card-border);
}

.nav-mobile .mobile-lang-list a {
  font-size: 0.95rem;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-card-border);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 140px 0 80px;
  text-align: center;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(94, 92, 226, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(94, 92, 226, 0.1);
  border: 1px solid rgba(94, 92, 226, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-purple);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-text-bright);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero h1 .text-gradient {
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.hero-stat {
  text-align: center;
}

.hero-stat .stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text-bright);
}

.hero-stat .stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ===== Features ===== */
.features {
  background: var(--color-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: rgba(94, 92, 226, 0.3);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(94, 92, 226, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon i {
  font-size: 1.3rem;
  color: var(--color-purple);
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text-bright);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.features-cta {
  text-align: center;
  margin-top: 48px;
}

/* ===== Use Cases ===== */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.use-case-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  transition: all var(--transition);
}

.use-case-card:hover {
  transform: translateY(-4px);
  border-color: rgba(94, 92, 226, 0.3);
}

.use-case-card:nth-child(1) .use-case-icon { background: rgba(94, 92, 226, 0.1); }
.use-case-card:nth-child(1) .use-case-icon i { color: #5e5ce2; }
.use-case-card:nth-child(2) .use-case-icon { background: rgba(119, 137, 161, 0.15); }
.use-case-card:nth-child(2) .use-case-icon i { color: #7789a1; }
.use-case-card:nth-child(3) .use-case-icon { background: rgba(232, 121, 249, 0.1); }
.use-case-card:nth-child(3) .use-case-icon i { color: #e879f9; }
.use-case-card:nth-child(4) .use-case-icon { background: rgba(52, 211, 153, 0.1); }
.use-case-card:nth-child(4) .use-case-icon i { color: #34d399; }

.use-case-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.use-case-icon i {
  font-size: 1.4rem;
}

.use-case-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-bright);
  margin-bottom: 10px;
}

.use-case-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ===== Pricing ===== */
.pricing {
  background: var(--color-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
}

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

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

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-purple);
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 20px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-bright);
  margin-bottom: 8px;
}

.pricing-price {
  margin: 20px 0;
}

.pricing-price .amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-text-bright);
}

.pricing-price .period {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.pricing-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

.pricing-features {
  text-align: left;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--color-text);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

.pricing-features li i.fa-check {
  color: var(--color-purple);
  font-size: 0.8rem;
}

.pricing-features li i.fa-xmark {
  color: #555;
  font-size: 0.8rem;
}

.pricing-features li.disabled {
  color: #555;
}

.pricing-card .btn-cta {
  width: 100%;
  justify-content: center;
}

/* ===== Testimonials ===== */
.testimonials-overview {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.testimonials-score {
  text-align: center;
}

.testimonials-score .score-number {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-text-bright);
  line-height: 1;
}

.testimonials-score .score-stars {
  color: #fbbf24;
  font-size: 1.2rem;
  margin: 8px 0 4px;
}

.testimonials-score .score-count {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.testimonials-bars {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 240px;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.bar-row .bar-label {
  min-width: 50px;
}

.bar-track {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: #fbbf24;
  border-radius: 3px;
  transition: width 1s ease-out;
}

.bar-row .bar-pct {
  min-width: 36px;
  text-align: right;
}

.testimonials-carousel {
  position: relative;
  overflow: hidden;
}

.testimonials-track {
  display: flex;
  gap: 24px;
  transition: transform 0.5s ease;
}

.testimonial-card {
  flex: 0 0 calc(33.333% - 16px);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  min-width: 0;
}

.testimonial-card .stars {
  color: #fbbf24;
  font-size: 0.9rem;
  margin-bottom: 14px;
}

.testimonial-card .quote {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-purple);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.9rem;
}

.testimonial-info .name {
  font-weight: 600;
  color: var(--color-text-bright);
  font-size: 0.9rem;
}

.testimonial-info .role {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.testimonials-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 40px;
}

.testimonials-tags span {
  padding: 6px 16px;
  background: rgba(94, 92, 226, 0.08);
  border: 1px solid rgba(94, 92, 226, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--color-purple);
}

/* ===== Comparison ===== */
.comparison {
  background: var(--color-secondary);
}

.comparison-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-card-bg);
}

.comparison-table th,
.comparison-table td {
  padding: 16px 24px;
  text-align: center;
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.comparison-table thead th {
  background: rgba(94, 92, 226, 0.05);
  font-weight: 600;
  color: var(--color-text-bright);
  white-space: nowrap;
}

.comparison-table thead th.highlight {
  background: rgba(94, 92, 226, 0.12);
  color: var(--color-purple);
}

.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--color-text);
}

.comparison-table td.highlight {
  background: rgba(94, 92, 226, 0.04);
}

.comparison-table .check {
  color: var(--color-purple);
  font-weight: 700;
}

.comparison-table .cross {
  color: #555;
}

.comparison-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.faq-item.active {
  border-color: rgba(94, 92, 226, 0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  background: transparent;
  color: var(--color-text-bright);
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  transition: color var(--transition);
}

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

.faq-question i {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--color-purple);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===== Final CTA ===== */
.final-cta {
  position: relative;
  padding: 100px 0;
  text-align: center;
  background: linear-gradient(135deg, #0a0a1a 0%, #12102e 50%, #0a0a1a 100%);
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(94, 92, 226, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.final-cta h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-text-bright);
  margin-bottom: 16px;
  position: relative;
}

.final-cta p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  position: relative;
}

.final-cta .btn-cta {
  position: relative;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-secondary);
  border-top: 1px solid var(--color-card-border);
  padding: 48px 0 32px;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--color-text-bright);
}

.footer-brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.footer-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-text-bright);
}

.footer-bottom {
  text-align: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.82rem;
  color: #555;
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-purple);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(94, 92, 226, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(94, 92, 226, 0.5);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .pricing-card:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .testimonial-card {
    flex: 0 0 calc(50% - 12px);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

  .nav-desktop {
    display: none;
  }

  .header-actions .lang-switcher {
    display: none;
  }

  .header-actions .btn-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero {
    padding: 120px 0 60px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 32px;
  }

  .hero-stat .stat-number {
    font-size: 1.5rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .use-cases-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card:last-child {
    max-width: none;
  }

  .testimonial-card {
    flex: 0 0 100%;
  }

  .testimonials-overview {
    flex-direction: column;
    gap: 28px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 12px 14px;
    font-size: 0.85rem;
  }

  .final-cta h2 {
    font-size: 1.8rem;
  }

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

  .footer-links {
    justify-content: center;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 24px;
  }

  .btn-cta-large {
    padding: 14px 32px;
    font-size: 1rem;
  }
}