/* ============================================
   CraveU AI — Global Stylesheet
   ============================================ */

/* --- CSS Variables --- */
:root {
  --color-primary: #131014;
  --color-secondary: #141116;
  --color-accent: #ce96b1;
  --color-purple: #5f3ea2;
  --color-cyan: #36bbde;
  --color-bg: #0e0c10;
  --color-card: #1a1720;
  --color-card-hover: #221e2a;
  --color-text: #e8e4ec;
  --color-text-muted: #9a94a3;
  --color-border: rgba(206, 150, 177, 0.15);
  --color-glass: rgba(20, 17, 22, 0.75);
  --gradient-accent: linear-gradient(135deg, #5f3ea2, #ce96b1, #36bbde);
  --gradient-hero: linear-gradient(160deg, #131014 0%, #1a1028 40%, #131014 100%);
  --gradient-cta: linear-gradient(135deg, #5f3ea2 0%, #36bbde 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(95, 62, 162, 0.25);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --font-en: 'Inter', sans-serif;
  --font-zh: 'Noto Sans SC', sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

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

[lang="zh"] body,
[lang="zh-TW"] body {
  font-family: var(--font-zh), var(--font-en);
}

[lang="ja"] body {
  font-family: 'Noto Sans JP', var(--font-en);
}

[lang="ko"] body {
  font-family: 'Noto Sans KR', var(--font-en);
}

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

a:hover {
  color: var(--color-cyan);
}

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

ul, ol {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

.site-header.scrolled {
  background: var(--color-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border);
  padding: 10px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

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

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
}

.nav-menu a:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-menu a i {
  font-size: 0.85rem;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
  margin-left: 8px;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.lang-btn:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
}

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

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

.lang-dropdown a {
  display: block;
  padding: 10px 16px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  transition: all var(--transition);
}

.lang-dropdown a:hover,
.lang-dropdown a.active {
  background: rgba(95, 62, 162, 0.15);
  color: var(--color-text);
}

/* CTA Button (Header) */
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--gradient-cta);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: #fff;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  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 */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(14, 12, 16, 0.97);
  backdrop-filter: blur(20px);
  z-index: 1050;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

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

.mobile-nav a {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.mobile-nav a:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.mobile-nav .btn-cta {
  margin-top: 16px;
  font-size: 1.1rem;
  padding: 14px 32px;
}

.mobile-nav .mobile-lang-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  padding: 0 24px;
}

.mobile-nav .mobile-lang-list a {
  font-size: 0.85rem;
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(95, 62, 162, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(54, 187, 222, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(95, 62, 162, 0.2);
  border: 1px solid rgba(95, 62, 162, 0.3);
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease forwards;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s forwards;
  opacity: 0;
}

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

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 32px;
  animation: fadeInUp 0.6s ease 0.2s forwards;
  opacity: 0;
}

.hero .btn-cta {
  font-size: 1.05rem;
  padding: 14px 36px;
  animation: fadeInUp 0.6s ease 0.3s forwards;
  opacity: 0;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 48px;
  animation: fadeInUp 0.6s ease 0.4s forwards;
  opacity: 0;
}

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

.hero-stat .number {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

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

/* ============================================
   Section Common
   ============================================ */
section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 3px;
  margin: 16px auto 0;
}

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

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

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

.feature-card:hover {
  background: var(--color-card-hover);
  border-color: rgba(95, 62, 162, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.feature-icon.purple {
  background: rgba(95, 62, 162, 0.15);
  color: #8b6fd4;
}

.feature-icon.pink {
  background: rgba(206, 150, 177, 0.15);
  color: var(--color-accent);
}

.feature-icon.cyan {
  background: rgba(54, 187, 222, 0.15);
  color: var(--color-cyan);
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

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

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  border-radius: var(--radius-xl);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-outline:hover {
  background: rgba(206, 150, 177, 0.1);
  color: var(--color-accent);
  transform: translateY(-2px);
}

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

.use-case-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}

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

.use-case-card:nth-child(1) { border-top: 3px solid #5f3ea2; }
.use-case-card:nth-child(2) { border-top: 3px solid #ce96b1; }
.use-case-card:nth-child(3) { border-top: 3px solid #36bbde; }
.use-case-card:nth-child(4) { border-top: 3px solid #8b6fd4; }

.use-case-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.use-case-card:nth-child(1) .use-case-icon { color: #5f3ea2; }
.use-case-card:nth-child(2) .use-case-icon { color: #ce96b1; }
.use-case-card:nth-child(3) .use-case-icon { color: #36bbde; }
.use-case-card:nth-child(4) .use-case-icon { color: #8b6fd4; }

.use-case-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.use-case-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================
   Pricing Section
   ============================================ */
.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);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: all var(--transition);
}

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

.pricing-card.popular {
  border-color: var(--color-purple);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-4px);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 20px;
  background: var(--gradient-cta);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-xl);
  white-space: nowrap;
}

.pricing-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.pricing-card .price {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.pricing-card .price span {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.pricing-card .price-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.pricing-features {
  margin-bottom: 28px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.pricing-features li i.fa-check {
  color: #4caf50;
  font-size: 0.8rem;
}

.pricing-features li i.fa-xmark {
  color: #666;
  font-size: 0.8rem;
}

.pricing-card .btn-cta {
  width: 100%;
  justify-content: center;
  font-size: 0.95rem;
}

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

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials-summary {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.rating-overview {
  text-align: center;
}

.rating-overview .big-score {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-accent);
}

.rating-overview .stars {
  color: #f5a623;
  font-size: 1.1rem;
  margin: 4px 0;
}

.rating-overview .count {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.rating-bars {
  width: 240px;
}

.rating-bar-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.rating-bar-row span:first-child {
  width: 12px;
  text-align: right;
}

.rating-bar {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}

.rating-bar-fill {
  height: 100%;
  background: #f5a623;
  border-radius: 3px;
}

.rating-bar-row span:last-child {
  width: 28px;
  text-align: right;
  font-size: 0.75rem;
}

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

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

.testimonial-card:hover {
  border-color: rgba(95, 62, 162, 0.3);
  transform: translateY(-2px);
}

.testimonial-card .stars {
  color: #f5a623;
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.testimonial-card .text {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}

.testimonial-card .author {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

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

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

.testimonial-tags span {
  padding: 6px 16px;
  background: rgba(95, 62, 162, 0.12);
  border: 1px solid rgba(95, 62, 162, 0.2);
  border-radius: var(--radius-xl);
  font-size: 0.82rem;
  color: var(--color-accent);
}

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

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

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  text-align: center;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-card);
  font-weight: 600;
  color: var(--color-text);
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
}

.comparison-table td {
  color: var(--color-text-muted);
}

.comparison-table .highlight-col {
  background: rgba(95, 62, 162, 0.08);
}

.comparison-table th.highlight-col {
  background: rgba(95, 62, 162, 0.15);
  color: var(--color-accent);
}

.comparison-table .check {
  color: #4caf50;
  font-weight: 700;
}

.comparison-table .cross {
  color: #666;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: rgba(95, 62, 162, 0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 24px;
  background: var(--color-card);
  border: none;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition);
  font-family: inherit;
}

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

.faq-question i {
  font-size: 0.8rem;
  color: var(--color-accent);
  transition: transform var(--transition);
}

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

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

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================
   Final CTA Section
   ============================================ */
.final-cta {
  background: var(--gradient-cta);
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.final-cta h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
}

.final-cta p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  position: relative;
}

.final-cta .btn-cta {
  background: #fff;
  color: var(--color-purple);
  font-size: 1.1rem;
  padding: 16px 40px;
  position: relative;
}

.final-cta .btn-cta:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: var(--color-primary);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

.footer-col a {
  display: block;
  padding: 4px 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-accent);
  font-size: 1rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--color-purple);
  color: #fff;
  border-color: var(--color-purple);
}

/* ============================================
   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.popular {
    transform: none;
  }

  .pricing-card.popular:hover {
    transform: translateY(-4px);
  }

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

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

@media (max-width: 768px) {
  .nav-menu,
  .header-cta,
  .lang-switcher {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat .number {
    font-size: 1.2rem;
  }

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

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .testimonials-summary {
    flex-direction: column;
    gap: 24px;
  }

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

  .comparison-table th,
  .comparison-table td {
    padding: 12px 14px;
    font-size: 0.82rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  section {
    padding: 60px 0;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 16px;
  }

  .container {
    padding: 0 16px;
  }
}