/* ================================================================
   浜戞瀽鏁版嵁 (YunXi Data) - Landing Page Stylesheet
   Primary: Indigo (#4F46E5 / #4338CA)
   ================================================================ */

/* ---------- CSS Variables / Design Tokens ---------- */
:root {
  --color-primary: #4F46E5;
  --color-primary-dark: #4338CA;
  --color-primary-light: #6366F1;
  --color-primary-lighter: #A5B4FC;
  --color-primary-surface: #EEF2FF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  --color-green: #10B981;
  --color-red: #EF4444;
  --color-amber: #F59E0B;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-700);
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

::selection {
  background: var(--color-primary);
  color: #ffffff;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ---------- Section ---------- */
.section {
  padding: 5rem 0;
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  background: var(--color-primary-surface);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-tag-light {
  background: rgba(255,255,255,0.15);
  color: #C7D2FE;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-gray-900);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-gray-500);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

.text-white {
  color: #ffffff;
}

.text-indigo-200 {
  color: #C7D2FE;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  border-radius: var(--radius-lg);
}

.btn-block {
  width: 100%;
  display: flex;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #ffffff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -4px rgba(79, 70, 229, 0.4);
}

.btn-outline {
  border: 2px solid rgba(255,255,255,0.4);
  color: #ffffff;
  background: transparent;
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

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

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.btn-outline-white {
  border: 2px solid rgba(255,255,255,0.5);
  color: #ffffff;
  background: transparent;
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.8);
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all var(--transition-base);
  padding: 0;
}

.navbar.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.navbar.scrolled .nav-link {
  color: var(--color-gray-600);
}

.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active {
  color: var(--color-primary);
}

.navbar.scrolled .logo-text {
  color: var(--color-gray-900);
}

.navbar.scrolled .btn-outline {
  border-color: var(--color-gray-300);
  color: var(--color-gray-700);
}

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

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

/* Nav Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.375rem;
  z-index: 1001;
}

.logo-icon {
  color: var(--color-primary-lighter);
  font-size: 1.5rem;
}

.logo-text {
  color: #ffffff;
  transition: color var(--transition-base);
}

.navbar.scrolled .logo-icon {
  color: var(--color-primary);
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: rgba(255,255,255,0.85);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: #ffffff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #ffffff;
  transition: width var(--transition-base);
  border-radius: 1px;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.navbar.scrolled .nav-link::after {
  background: var(--color-primary);
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Nav Toggle (Hamburger) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle-bar {
  width: 24px;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: all var(--transition-base);
}

.navbar.scrolled .nav-toggle-bar {
  background: var(--color-gray-700);
}

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

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

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

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #ffffff;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 1.5rem;
  transform: translateY(-8px);
  opacity: 0;
  transition: all var(--transition-base);
}

.mobile-menu.open {
  display: block;
  transform: translateY(0);
  opacity: 1;
}

.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--color-gray-700);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.mobile-link:hover {
  background: var(--color-primary-surface);
  color: var(--color-primary);
}

.mobile-actions {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-gray-200);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #312E81 0%, #4338CA 25%, #4F46E5 50%, #6366F1 75%, #818CF8 100%);
  overflow: hidden;
  padding-top: 4.5rem;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(99,102,241,0.4) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 20%, rgba(129,140,248,0.3) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  z-index: 1;
  padding-top: 2rem;
  padding-bottom: 6rem;
}

.hero-content {
  color: #ffffff;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255,255,255,0.15);
}

.hero-badge i {
  color: #FBBF24;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.text-gradient {
  background: linear-gradient(135deg, #A5B4FC, #E0E7FF);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.8);
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.trust-avatars {
  display: flex;
  align-items: center;
}

.trust-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #A5B4FC, #6366F1);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  border: 2px solid rgba(255,255,255,0.3);
  margin-right: -8px;
}

.trust-avatar-1 { background: linear-gradient(135deg, #A78BFA, #7C3AED); }
.trust-avatar-2 { background: linear-gradient(135deg, #60A5FA, #2563EB); }
.trust-avatar-3 { background: linear-gradient(135deg, #34D399, #059669); }
.trust-avatar-4 { background: linear-gradient(135deg, #F472B6, #DB2777); }

.trust-text {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-wrapper {
  position: relative;
  display: inline-block;
}

.hero-image {
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.3);
  width: 100%;
  height: auto;
  animation: heroFloat 6s ease-in-out infinite;
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

.hero-float-card {
  position: absolute;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  animation: floatCard 5s ease-in-out infinite;
}

.hero-float-card strong {
  display: block;
  color: var(--color-gray-900);
  font-size: 1rem;
}

.hero-float-card small {
  color: var(--color-gray-500);
  font-size: 0.75rem;
}

.hero-float-tl {
  top: -20px;
  left: -30px;
  animation-delay: 0s;
}

.hero-float-br {
  bottom: -20px;
  right: -30px;
  animation-delay: 1.5s;
}

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

.float-card-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.float-dot-green {
  background: var(--color-green);
  box-shadow: 0 0 8px rgba(16,185,129,0.5);
}

.float-dot-blue {
  background: #3B82F6;
  box-shadow: 0 0 8px rgba(59,130,246,0.5);
}

/* Hero Wave */
.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.hero-wave svg {
  display: block;
  width: 100%;
  height: 80px;
}

/* ---------- Features ---------- */
.features {
  background: #ffffff;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: 2.25rem 2rem;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.feature-card:hover {
  border-color: transparent;
  box-shadow: 0 24px 48px -12px rgba(79,70,229,0.15);
  transform: translateY(-8px);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-primary-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 8px 24px -4px rgba(79,70,229,0.4);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: 0.75rem;
}

.feature-desc {
  color: var(--color-gray-500);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: gap var(--transition-fast);
}

.feature-link:hover {
  gap: 0.625rem;
}

/* ---------- Stats ---------- */
.stats {
  position: relative;
  background: linear-gradient(135deg, #312E81 0%, #4338CA 30%, #4F46E5 60%, #6366F1 100%);
  overflow: hidden;
}

.stats-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 80%, rgba(99,102,241,0.3) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 20%, rgba(129,140,248,0.2) 0%, transparent 50%);
  pointer-events: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  position: relative;
  z-index: 1;
}

.stat-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.12);
  transition: all var(--transition-base);
}

.stat-card:hover {
  background: rgba(255,255,255,0.14);
  transform: translateY(-4px);
}

.stat-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  color: #C7D2FE;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.2;
  margin-bottom: 0.375rem;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.75);
  font-weight: 500;
}

/* ---------- Testimonials ---------- */
.testimonials {
  background: var(--color-gray-50);
}

.testimonials-carousel {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  overflow: hidden;
  padding: 1rem 0;
}

.testimonials-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-slide {
  min-width: 100%;
  padding: 0 0.5rem;
}

.testimonial-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-gray-200);
}

.testimonial-stars {
  color: var(--color-amber);
  font-size: 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  gap: 0.125rem;
}

.testimonial-text {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-gray-600);
  margin-bottom: 1.75rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9375rem;
  flex-shrink: 0;
}

.testimonial-author strong {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-gray-900);
}

.testimonial-author small {
  font-size: 0.8125rem;
  color: var(--color-gray-400);
}

/* Carousel Dots */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gray-300);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  padding: 0;
}

.carousel-dot.active {
  background: var(--color-primary);
  width: 28px;
  border-radius: 5px;
}

/* Carousel Arrows */
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-600);
  font-size: 0.875rem;
  transition: all var(--transition-base);
  z-index: 2;
}

.carousel-arrow:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.carousel-prev {
  left: -55px;
}

.carousel-next {
  right: -55px;
}

/* ---------- FAQ ---------- */
.faq {
  background: #ffffff;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-gray-100);
}

.faq-item {
  border-bottom: 1px solid var(--color-gray-100);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.75rem;
  background: #ffffff;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gray-800);
  text-align: left;
  transition: all var(--transition-fast);
  gap: 1rem;
}

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

.faq-question i {
  font-size: 0.875rem;
  color: var(--color-primary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.faq-question[aria-expanded="true"] {
  color: var(--color-primary);
  background: var(--color-primary-surface);
}

.faq-question[aria-expanded="true"] i {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer.open {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 1.75rem 1.5rem 1.75rem;
}

.faq-answer-inner p {
  color: var(--color-gray-500);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(135deg, #312E81 0%, #4F46E5 40%, #6366F1 70%, #818CF8 100%);
}

.cta-card {
  text-align: center;
  color: #ffffff;
  padding: 1rem 0;
}

.cta-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  padding: 0.375rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.cta-desc {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.cta-note {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.55);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.375rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1rem;
}

.footer-logo i {
  color: var(--color-primary-lighter);
}

.footer-desc {
  font-size: 0.9375rem;
  line-height: 1.75;
  margin-bottom: 1.5rem;
  max-width: 340px;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  font-size: 1rem;
  transition: all var(--transition-base);
}

.footer-social a:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.footer-heading {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.9375rem;
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  font-size: 0.8125rem;
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: var(--color-gray-300);
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 12px rgba(79,70,229,0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-base);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(79,70,229,0.5);
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Custom Scrollbar ---------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary-lighter);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-light);
}

/* ================================================================
   Responsive
   ================================================================ */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    order: 1;
  }

  .hero-visual {
    order: 0;
  }

  .hero-image-wrapper {
    max-width: 480px;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-trust {
    justify-content: center;
  }

  .hero-float-tl {
    left: -10px;
    top: -15px;
  }

  .hero-float-br {
    right: -10px;
    bottom: -15px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .carousel-prev {
    left: -20px;
  }

  .carousel-next {
    right: -20px;
  }
}

@media (max-width: 768px) {
  .nav-menu,
  .nav-actions {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.25rem;
  }

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

  .hero-image-wrapper {
    max-width: 360px;
    margin: 0 auto;
  }

  .hero-float-card {
    display: none;
  }

  .section {
    padding: 3.5rem 0;
  }

  .section-title {
    font-size: 1.75rem;
  }

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

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

  .cta-title {
    font-size: 1.75rem;
  }

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

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

  .footer-bottom-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .testimonial-card {
    padding: 1.75rem 1.5rem;
  }

  .carousel-prev,
  .carousel-next {
    display: none;
  }

  .faq-question {
    padding: 1rem 1.25rem;
  }

  .faq-answer-inner {
    padding: 0 1.25rem 1.25rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

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

  .stat-number {
    font-size: 2rem;
  }

  .cta-title {
    font-size: 1.5rem;
  }

  .cta-buttons {
    flex-direction: column;
  }

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