*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #4F6EF7;
  --primary-light: #6B85F9;
  --primary-dark: #3A56D4;
  --secondary: #FF6B35;
  --secondary-light: #FF8A5C;
  --success: #22C55E;
  --success-light: #4ADE80;
  --bg: #F8FAFC;
  --card-bg: #FFFFFF;
  --text-primary: #1E293B;
  --text-secondary: #64748B;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s ease;
}

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

body {
  font-family: "PingFang SC", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ==================== Header ==================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: box-shadow var(--transition), background var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.98);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

.header-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  font-weight: 800;
}

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

.header-nav a {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
  padding: 4px 0;
}

.header-nav a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transition: width var(--transition);
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--primary);
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: 0 4px 14px rgba(79, 110, 247, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 110, 247, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

.btn-white {
  background: white;
  color: var(--primary);
  font-weight: 700;
  padding: 16px 40px;
  font-size: 17px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 12px 16px;
}

.btn-ghost:hover {
  color: var(--primary);
  background: rgba(79, 110, 247, 0.06);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 17px;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
  z-index: 1001;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  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-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  z-index: 999;
  padding: 32px 24px;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  transform: translateY(-10px);
  transition: all var(--transition);
}

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

.mobile-menu a {
  display: block;
  padding: 16px 0;
  font-size: 18px;
  color: var(--text-primary);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}

.mobile-menu a:hover {
  color: var(--primary);
}

.mobile-menu .btn {
  margin-top: 24px;
  width: 100%;
  text-align: center;
}

/* ==================== Hero ==================== */
.hero {
  padding-top: 140px;
  padding-bottom: 100px;
  background: linear-gradient(170deg, #EEF2FF 0%, #F8FAFC 40%, #FFF7ED 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(79, 110, 247, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.04) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(79, 110, 247, 0.08);
  border-radius: 100px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

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

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.hero-trust-item svg {
  color: var(--success);
  flex-shrink: 0;
}

.hero-visual {
  flex: 1;
  max-width: 540px;
  position: relative;
}

.hero-comparison {
  display: flex;
  gap: 20px;
  position: relative;
}

.hero-comparison-card {
  flex: 1;
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero-comparison-card.before {
  border-top: 3px solid #EF4444;
}

.hero-comparison-card.after {
  border-top: 3px solid var(--success);
}

.comparison-label {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 16px;
}

.before .comparison-label {
  background: #FEE2E2;
  color: #EF4444;
}

.after .comparison-label {
  background: #DCFCE7;
  color: #16A34A;
}

.comparison-messages {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.comparison-msg {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  line-height: 1.4;
}

.before .comparison-msg {
  background: #FEF2F2;
  color: #991B1B;
  border-left: 3px solid #EF4444;
}

.after .comparison-msg {
  background: #F0FDF4;
  color: #166534;
  border-left: 3px solid var(--success);
}

.comparison-vs {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(79, 110, 247, 0.4);
}

/* Stats bar */
.stats-bar {
  padding: 48px 0;
  background: white;
  border-bottom: 1px solid var(--border);
}

.stats-bar .container {
  display: flex;
  justify-content: center;
  gap: 80px;
}

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

.stat-number {
  font-size: 42px;
  font-weight: 700;
  color: var(--primary);
  font-family: "DIN Alternate", "Inter", monospace;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-number .suffix {
  font-size: 20px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

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

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.section-tag.red {
  background: #FEE2E2;
  color: #DC2626;
}

.section-tag.blue {
  background: #DBEAFE;
  color: var(--primary);
}

.section-tag.green {
  background: #DCFCE7;
  color: #16A34A;
}

.section-tag.orange {
  background: #FFF7ED;
  color: var(--secondary);
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.painpoint {
  background: white;
}

.painpoint-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.painpoint-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
}

.painpoint-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.painpoint-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 28px;
}

.painpoint-icon.red {
  background: #FEE2E2;
  color: #DC2626;
}

.painpoint-icon.orange {
  background: #FFF7ED;
  color: #EA580C;
}

.painpoint-icon.rose {
  background: #FFE4E6;
  color: #E11D48;
}

.painpoint-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.painpoint-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.painpoint-connector {
  display: none;
}

.painpoint-transition {
  text-align: center;
  margin-top: 48px;
  font-size: 16px;
  color: var(--text-secondary);
  font-weight: 500;
}

.painpoint-transition .arrow {
  display: inline-block;
  animation: bounce-down 1.5s infinite;
}

@keyframes bounce-down {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ==================== Solution ==================== */
.solution {
  background: var(--bg);
}

.solution-steps {
  display: flex;
  gap: 24px;
  align-items: stretch;
  position: relative;
}

.solution-step {
  flex: 1;
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
}

.solution-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.solution-step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  margin: 0 auto 20px;
  box-shadow: 0 4px 14px rgba(79, 110, 247, 0.3);
}

.solution-step-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  background: rgba(79, 110, 247, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--primary);
}

.solution-step h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
}

.solution-step p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.solution-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.solution-arrow.arrow-1 {
  left: calc(33.33% - 12px);
}

.solution-arrow.arrow-2 {
  left: calc(66.66% - 12px);
}

/* ==================== Features ==================== */
.features {
  background: white;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
  background: white;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
  color: white;
}

.feature-icon.blue { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.feature-icon.green { background: linear-gradient(135deg, #16A34A, var(--success-light)); }
.feature-icon.orange { background: linear-gradient(135deg, #EA580C, var(--secondary-light)); }
.feature-icon.purple { background: linear-gradient(135deg, #7C3AED, #A78BFA); }
.feature-icon.teal { background: linear-gradient(135deg, #0D9488, #2DD4BF); }
.feature-icon.red { background: linear-gradient(135deg, #DC2626, #F87171); }

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==================== Revenue ==================== */
.revenue {
  background: var(--bg);
}

.revenue-funnel {
  display: flex;
  justify-content: center;
  margin-bottom: 60px;
}

.funnel {
  width: 100%;
  max-width: 700px;
}

.funnel-layer {
  text-align: center;
  padding: 24px 32px;
  color: white;
  font-weight: 600;
  font-size: 16px;
  position: relative;
  clip-path: polygon(5% 0%, 95% 0%, 100% 100%, 0% 100%);
}

.funnel-layer:first-child {
  clip-path: polygon(2% 0%, 98% 0%, 95% 100%, 5% 100%);
}

.funnel-layer:nth-child(2) {
  clip-path: polygon(5% 0%, 95% 0%, 92% 100%, 8% 100%);
}

.funnel-layer:last-child {
  clip-path: polygon(8% 0%, 92% 0%, 88% 100%, 12% 100%);
}

.funnel-layer.layer-1 {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  padding: 28px 32px;
}

.funnel-layer.layer-2 {
  background: linear-gradient(135deg, #6366F1, #818CF8);
  padding: 24px 32px;
}

.funnel-layer.layer-3 {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: 20px 32px;
}

.funnel-layer .funnel-label {
  font-size: 18px;
  font-weight: 700;
}

.funnel-layer .funnel-desc {
  font-size: 13px;
  opacity: 0.9;
  margin-top: 4px;
}

.revenue-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 60px;
}

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

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

.revenue-card-tier {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 16px;
}

.tier-1 { background: #DBEAFE; color: var(--primary); }
.tier-2 { background: #E0E7FF; color: #4338CA; }
.tier-3 { background: #FFF7ED; color: #EA580C; }

.revenue-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.revenue-card .logic {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 12px;
}

.revenue-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.revenue-data {
  display: flex;
  justify-content: center;
  gap: 60px;
  background: white;
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid var(--border);
}

.revenue-data-item {
  text-align: center;
}

.revenue-data-value {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary);
  font-family: "DIN Alternate", "Inter", monospace;
  line-height: 1;
  margin-bottom: 8px;
}

.revenue-data-value .unit {
  font-size: 18px;
  color: var(--text-secondary);
  font-weight: 500;
}

.revenue-data-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==================== Pricing ==================== */
.pricing {
  background: white;
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}

.pricing-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  border: 2px solid var(--border);
  transition: all var(--transition);
  position: relative;
}

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

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-xl);
  transform: scale(1.04);
  z-index: 1;
}

.pricing-card.featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.pricing-card-name {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  text-align: center;
}

.pricing-card-price {
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.pricing-card-price .amount {
  font-size: 52px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: "DIN Alternate", "Inter", monospace;
  line-height: 1;
}

.pricing-card-price .period {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
}

.pricing-card-price .free-tag {
  font-size: 52px;
  font-weight: 700;
  color: var(--success);
}

.pricing-card-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-card-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pricing-card-features li svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-card-features li .check {
  color: var(--success);
}

.pricing-card-features li .cross {
  color: #CBD5E1;
}

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

.pricing-note {
  text-align: center;
  margin-top: 40px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.pricing-note strong {
  color: var(--text-primary);
}

/* ==================== FAQ ==================== */
.faq {
  background: var(--bg);
}

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

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

.faq-item:hover {
  border-color: rgba(79, 110, 247, 0.3);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(79, 110, 247, 0.1);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  gap: 16px;
  transition: color var(--transition);
  user-select: none;
}

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

.faq-question .faq-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  color: var(--text-secondary);
}

.faq-item.active .faq-toggle {
  background: var(--primary);
  color: white;
  transform: rotate(45deg);
}

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

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ==================== CTA Section ==================== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, #6366F1 50%, #7C3AED 100%);
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section::after {
  content: "";
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  font-size: 40px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.cta-section .cta-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 40px;
}

.cta-section .cta-note {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 20px;
}

/* ==================== Footer ==================== */
.footer {
  background: #0F172A;
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  font-weight: 800;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-qr {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.05);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
}

.footer-qr-placeholder {
  width: 64px;
  height: 64px;
  background: white;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 10px;
  text-align: center;
  line-height: 1.2;
}

.footer-qr span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: white;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  padding: 6px 0;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: white;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ==================== Register Modal ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity var(--transition);
}

.modal-overlay.show {
  display: flex;
  opacity: 1;
}

.modal {
  background: white;
  border-radius: var(--radius-xl);
  padding: 40px;
  max-width: 480px;
  width: 100%;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(10px);
  transition: transform var(--transition);
}

.modal-overlay.show .modal {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.modal-close:hover {
  background: #FEE2E2;
  color: #DC2626;
}

.modal h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal .modal-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-group label .optional {
  font-weight: 400;
  color: var(--text-secondary);
  font-size: 12px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text-primary);
  transition: border-color var(--transition);
  outline: none;
  font-family: inherit;
  background: white;
}

.form-input:focus {
  border-color: var(--primary);
}

.form-input::placeholder {
  color: #CBD5E1;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-input {
  flex: 1;
}

.sms-btn {
  flex-shrink: 0;
  padding: 12px 20px;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.sms-btn:hover {
  border-color: var(--primary);
  background: rgba(79, 110, 247, 0.04);
}

.sms-btn:disabled {
  color: var(--text-secondary);
  cursor: not-allowed;
  border-color: var(--border);
}

.form-radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.form-radio {
  padding: 8px 16px;
  border: 2px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.form-radio.selected {
  border-color: var(--primary);
  background: rgba(79, 110, 247, 0.06);
  color: var(--primary);
  font-weight: 600;
}

.form-submit {
  margin-top: 24px;
}

.form-submit .btn {
  width: 100%;
  padding: 14px;
  font-size: 16px;
}

.form-footer {
  text-align: center;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==================== Customer Service ==================== */
.cs-float {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 1500;
}

.cs-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #07C160, #2DC100);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(7, 193, 96, 0.4);
  transition: all var(--transition);
}

.cs-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(7, 193, 96, 0.5);
}

.cs-popup {
  position: absolute;
  bottom: 68px;
  right: 0;
  width: 280px;
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xl);
  display: none;
  opacity: 0;
  transform: translateY(10px) scale(0.95);
  transition: all var(--transition);
}

.cs-popup.show {
  display: block;
  opacity: 1;
  transform: translateY(0) scale(1);
}

.cs-popup h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.cs-popup p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.cs-qr {
  width: 160px;
  height: 160px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 12px;
  text-align: center;
  border: 2px dashed var(--border);
}

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

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

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

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 38px;
  }

  .hero .container {
    gap: 40px;
  }

  .section-title {
    font-size: 30px;
  }

  .pricing-cards {
    gap: 20px;
  }

  .pricing-card.featured {
    transform: scale(1.02);
  }

  .pricing-card.featured:hover {
    transform: scale(1.02) translateY(-4px);
  }

  .revenue-data {
    gap: 40px;
    padding: 36px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

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

  .hamburger {
    display: flex;
  }

  .hero {
    padding-top: 110px;
    padding-bottom: 60px;
  }

  .hero .container {
    flex-direction: column;
    gap: 40px;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

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

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

  .hero-visual {
    max-width: 100%;
  }

  .stats-bar .container {
    gap: 32px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .stat-number {
    font-size: 32px;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .section-desc {
    font-size: 16px;
  }

  .painpoint-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .solution-steps {
    flex-direction: column;
    gap: 20px;
  }

  .solution-arrow {
    display: none;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .revenue-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .revenue-data {
    flex-direction: column;
    gap: 28px;
    padding: 28px;
  }

  .revenue-data-value {
    font-size: 36px;
  }

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

  .pricing-card.featured {
    transform: none;
    order: -1;
  }

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

  .cta-section h2 {
    font-size: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cs-float {
    bottom: 20px;
    right: 20px;
  }

  .modal {
    padding: 28px;
    margin: 16px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 28px;
  }

  .hero-comparison {
    flex-direction: column;
    gap: 16px;
  }

  .comparison-vs {
    top: auto;
    left: 50%;
    bottom: -8px;
    transform: translateX(-50%) rotate(90deg);
  }

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

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .container {
    padding: 0 16px;
  }
}