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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  color: #334155;
  background: #ffffff;
}

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

/* Animations */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #0f172a;
  font-weight: 700;
  font-size: 20px;
}

.nav-brand-icon {
  width: 36px;
  height: 36px;
}

.nav-brand-icon svg {
  width: 100%;
  height: 100%;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  text-decoration: none;
  color: #64748b;
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: #0f172a;
  background: rgba(15, 23, 42, 0.05);
}

.nav-link.active {
  color: #06b6d4;
  background: rgba(6, 182, 212, 0.1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #0f172a;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.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);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(6, 182, 212, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 182, 212, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 50px;
  color: #06b6d4;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: #06b6d4;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-highlight {
  background: linear-gradient(135deg, #06b6d4 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  color: #94a3b8;
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #64748b;
  font-size: 14px;
  font-weight: 500;
}

.trust-item svg {
  width: 18px;
  height: 18px;
}

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

.hero-panel {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 24px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.panel-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #fbbf24; }
.dot.green { background: #22c55e; }

.panel-title {
  color: #e2e8f0;
  font-size: 14px;
  font-weight: 500;
}

.panel-modules {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.mod-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 16px 12px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
}

.mod-card:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.mod-icon {
  width: 32px;
  height: 32px;
  margin: 0 auto 8px;
  color: #06b6d4;
}

.mod-icon svg {
  width: 100%;
  height: 100%;
}

.mod-card.mod-sheets .mod-icon { color: #22c55e; }
.mod-card.mod-slides .mod-icon { color: #a78bfa; }
.mod-card.mod-pdf .mod-icon { color: #f59e0b; }

.mod-label {
  color: #94a3b8;
  font-size: 12px;
  font-weight: 500;
}

.panel-chart {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  padding: 16px;
}

.chart-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.chart-row:last-child {
  margin-bottom: 0;
}

.chart-label {
  color: #94a3b8;
  font-size: 12px;
  width: 70px;
  flex-shrink: 0;
}

.chart-bar {
  flex: 1;
  height: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.chart-fill {
  height: 100%;
  background: linear-gradient(90deg, #06b6d4 0%, #a78bfa 100%);
  border-radius: 4px;
}

.chart-value {
  color: #06b6d4;
  font-size: 12px;
  font-weight: 600;
  width: 36px;
  text-align: right;
}

/* Hero Stats */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  margin-top: 80px;
  position: relative;
  z-index: 1;
}

.stat-box {
  text-align: center;
  padding: 24px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
}

.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: #06b6d4;
  line-height: 1;
}

.stat-unit {
  font-size: 14px;
  color: #06b6d4;
  font-weight: 600;
  margin-left: 2px;
}

.stat-label {
  font-size: 13px;
  color: #64748b;
  margin-top: 8px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

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

.btn-primary {
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

.btn-cyan {
  background: #06b6d4;
  color: white;
}

.btn-cyan:hover {
  background: #0891b2;
}

.btn-outline {
  background: transparent;
  color: #06b6d4;
  border: 2px solid #06b6d4;
}

.btn-outline:hover {
  background: rgba(6, 182, 212, 0.1);
}

.btn-outline-light {
  background: transparent;
  color: #e2e8f0;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

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

.btn-white {
  background: white;
  color: #0f172a;
}

.btn-white:hover {
  background: #f1f5f9;
  transform: translateY(-2px);
}

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

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

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-light {
  background: #ffffff;
}

.section-dark {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.section-alt {
  background: #f8fafc;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.section-header.light {
  color: white;
}

.section-tag {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(6, 182, 212, 0.1);
  color: #06b6d4;
  font-size: 13px;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-tag.tag-white {
  background: rgba(255, 255, 255, 0.1);
  color: #e2e8f0;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-title.light {
  color: white;
}

.text-gradient {
  background: linear-gradient(135deg, #06b6d4 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-light {
  background: linear-gradient(135deg, #06b6d4 0%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 17px;
  color: #64748b;
  line-height: 1.7;
}

.section-desc.light {
  color: #94a3b8;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.feature-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #06b6d4 0%, #a78bfa 100%);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  border-color: #06b6d4;
  box-shadow: 0 10px 40px rgba(6, 182, 212, 0.15);
  transform: translateY(-4px);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.icon-cyan { background: rgba(6, 182, 212, 0.1); color: #06b6d4; }
.icon-green { background: rgba(34, 197, 94, 0.1); color: #22c55e; }
.icon-purple { background: rgba(167, 139, 250, 0.1); color: #a78bfa; }
.icon-amber { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.icon-rose { background: rgba(251, 113, 133, 0.1); color: #fb7185; }
.icon-indigo { background: rgba(99, 102, 241, 0.1); color: #6366f1; }

.feature-title {
  font-size: 20px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 14px;
  color: #64748b;
  line-height: 1.6;
  margin-bottom: 16px;
}

.feature-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  padding: 4px 10px;
  background: #f1f5f9;
  color: #64748b;
  font-size: 12px;
  font-weight: 500;
  border-radius: 20px;
}

/* Deep Features */
.deep-features {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.deep-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.deep-row.reverse {
  direction: rtl;
}

.deep-row.reverse > * {
  direction: ltr;
}

.deep-tag {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 20px;
  margin-bottom: 16px;
}

.tag-cyan {
  background: rgba(6, 182, 212, 0.1);
  color: #06b6d4;
}

.tag-purple {
  background: rgba(167, 139, 250, 0.1);
  color: #a78bfa;
}

.tag-green {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}

.deep-title {
  font-size: 32px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 16px;
  line-height: 1.3;
}

.deep-desc {
  font-size: 16px;
  color: #64748b;
  line-height: 1.7;
  margin-bottom: 24px;
}

.deep-list {
  list-style: none;
}

.deep-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  color: #475569;
  font-size: 15px;
}

.list-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.list-dot.cyan { background: #06b6d4; }
.list-dot.purple { background: #a78bfa; }
.list-dot.green { background: #22c55e; }

.deep-visual {
  display: flex;
  justify-content: center;
}

.visual-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.visual-header {
  font-size: 14px;
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e2e8f0;
}

.visual-bars {
  margin-bottom: 20px;
}

.vbar-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.vbar-row span:first-child {
  font-size: 13px;
  color: #64748b;
  width: 80px;
}

.vbar {
  flex: 1;
  height: 10px;
  background: #f1f5f9;
  border-radius: 5px;
  overflow: hidden;
}

.vbar-fill {
  height: 100%;
  border-radius: 5px;
}

.fill-cyan { background: linear-gradient(90deg, #06b6d4 0%, #0891b2 100%); }
.fill-gray { background: #cbd5e1; }

.vbar-row span:last-child {
  font-size: 13px;
  font-weight: 600;
  color: #0f172a;
  width: 36px;
  text-align: right;
}

.visual-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid #e2e8f0;
}

.vstat {
  text-align: center;
}

.vstat-num {
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
}

.vstat-num.cyan { color: #06b6d4; }

.vstat-label {
  font-size: 12px;
  color: #64748b;
  margin-top: 4px;
}

.cloud-stats {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cloud-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: #f8fafc;
  border-radius: 12px;
}

.cloud-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cloud-icon svg {
  width: 24px;
  height: 24px;
}

.cloud-info {
  flex: 1;
}

.cloud-num {
  font-size: 20px;
  font-weight: 800;
  color: #0f172a;
}

.cloud-label {
  font-size: 13px;
  color: #64748b;
}

.compat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.compat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: #f8fafc;
  border-radius: 8px;
}

.compat-icon {
  width: 20px;
  height: 20px;
}

.compat-icon svg {
  width: 100%;
  height: 100%;
}

.compat-item span {
  font-size: 14px;
  color: #475569;
  font-weight: 500;
}

/* Platforms */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.platform-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.platform-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
  border-color: rgba(6, 182, 212, 0.3);
}

.platform-card.featured {
  background: rgba(6, 182, 212, 0.1);
  border-color: rgba(6, 182, 212, 0.3);
}

.platform-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 12px;
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  color: white;
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
}

.platform-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  color: #94a3b8;
}

.platform-icon svg {
  width: 100%;
  height: 100%;
}

.icon-windows { color: #06b6d4; }
.icon-apple { color: #e2e8f0; }
.icon-ios { color: #a78bfa; }
.icon-android { color: #22c55e; }

.platform-name {
  font-size: 20px;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
}

.platform-version {
  font-size: 13px;
  color: #06b6d4;
  font-weight: 600;
  margin-bottom: 4px;
}

.platform-require {
  font-size: 13px;
  color: #64748b;
  margin-bottom: 20px;
}

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

.review-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 28px;
  transition: all 0.3s ease;
}

.review-card:hover {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.review-stars svg {
  width: 18px;
  height: 18px;
}

.review-text {
  font-size: 15px;
  color: #475569;
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: white;
}

.avatar-cyan { background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%); }
.avatar-purple { background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 100%); }
.avatar-green { background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%); }
.avatar-amber { background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%); }
.avatar-rose { background: linear-gradient(135deg, #fb7185 0%, #e11d48 100%); }
.avatar-indigo { background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%); }

.review-name {
  font-size: 15px;
  font-weight: 600;
  color: #0f172a;
}

.review-role {
  font-size: 13px;
  color: #64748b;
}

/* Security */
.security-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.security-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 28px;
  text-align: center;
  transition: all 0.3s ease;
}

.security-card:hover {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.security-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: #f8fafc;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.security-icon svg {
  width: 32px;
  height: 32px;
}

.security-title {
  font-size: 18px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 12px;
}

.security-desc {
  font-size: 14px;
  color: #64748b;
  line-height: 1.6;
}

/* Compare Table */
.compare-section {
  background: white;
  border-radius: 16px;
  padding: 32px;
  border: 1px solid #e2e8f0;
}

.compare-title {
  font-size: 20px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 24px;
  text-align: center;
}

.compare-table-wrap {
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
}

.compare-table th {
  font-size: 14px;
  font-weight: 600;
  color: #64748b;
  background: #f8fafc;
}

.compare-table th.highlight {
  color: #06b6d4;
  background: rgba(6, 182, 212, 0.05);
}

.compare-table td {
  font-size: 14px;
  color: #475569;
}

.compare-table td.highlight {
  color: #06b6d4;
  font-weight: 600;
  background: rgba(6, 182, 212, 0.02);
}

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

.version-card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  transition: all 0.3s ease;
}

.version-card:hover {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.version-card.popular {
  border-color: #06b6d4;
  box-shadow: 0 10px 40px rgba(6, 182, 212, 0.15);
}

.version-badge {
  position: absolute;
  top: 0;
  right: 0;
  padding: 6px 14px;
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  color: white;
  font-size: 12px;
  font-weight: 600;
  border-bottom-left-radius: 12px;
}

.version-header {
  padding: 32px;
  border-bottom: 1px solid #e2e8f0;
}

.version-name {
  font-size: 20px;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 12px;
}

.version-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-num {
  font-size: 36px;
  font-weight: 800;
  color: #06b6d4;
}

.price-unit {
  font-size: 14px;
  color: #64748b;
}

.version-body {
  padding: 32px;
}

.version-features {
  list-style: none;
  margin-bottom: 24px;
}

.version-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 14px;
  color: #475569;
  border-bottom: 1px solid #f1f5f9;
}

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

.version-features svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

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

.faq-item {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: #0f172a;
  text-align: left;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: #64748b;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

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

.faq-content {
  padding: 0 24px 20px;
  color: #64748b;
  font-size: 15px;
  line-height: 1.7;
}

.faq-content p {
  margin-bottom: 12px;
}

.faq-content ul,
.faq-content ol {
  margin-left: 20px;
  margin-bottom: 12px;
}

.faq-content li {
  margin-bottom: 8px;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  padding: 100px 0;
  text-align: center;
}

.cta-inner {
  max-width: 600px;
  margin: 0 auto;
}

.cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: 50px;
  color: #06b6d4;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.cta-badge-dot {
  width: 8px;
  height: 8px;
  background: #06b6d4;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.cta-title {
  font-size: 40px;
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 17px;
  color: #94a3b8;
  margin-bottom: 32px;
  line-height: 1.7;
}

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

/* Footer */
.site-footer {
  background: #0f172a;
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-inner {
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-icon {
  width: 32px;
  height: 32px;
}

.footer-icon svg {
  width: 100%;
  height: 100%;
}

.footer-brand-text {
  font-size: 18px;
  font-weight: 700;
  color: white;
}

.footer-security {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #22c55e;
  font-size: 14px;
  margin-bottom: 16px;
}

.footer-security svg {
  width: 16px;
  height: 16px;
}

.footer-copyright {
  color: #64748b;
  font-size: 13px;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-trust {
    justify-content: center;
  }
  
  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .deep-row {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .deep-row.reverse {
    direction: ltr;
  }
  
  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .security-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .versions-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .nav-menu.show {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero {
    padding: 120px 0 60px;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .stat-box {
    padding: 16px;
  }
  
  .stat-number {
    font-size: 28px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .platforms-grid {
    grid-template-columns: 1fr;
  }
  
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  
  .security-grid {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .deep-title {
    font-size: 24px;
  }
  
  .cta-title {
    font-size: 28px;
  }
  
  .panel-modules {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  
  .hero-title {
    font-size: 28px;
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
  }
  
  .btn-lg {
    padding: 14px 24px;
    font-size: 15px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
}