:root {
  --primary-blue: #2563eb;
  --primary-blue-dark: #1d4ed8;
  --primary-green: #7cb342;
  --text-dark: #1f2937;
  --text-gray: #6b7280;
  --text-light: #9ca3af;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background: var(--bg-white);
  word-break: keep-all;
  overflow-wrap: break-word;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
}

.header-inner {
  display: flex;
  align-items: center;
  height: 70px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  margin-right: 48px;
}

.logo img {
  height: 40px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
}

.nav .btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 6px;
  margin-left: auto;
}

.nav-link {
  font-size: 15px;
  color: var(--text-gray);
  transition: color 0.2s;
  position: relative;
}

.nav-link:hover {
  color: var(--primary-blue);
}

.nav-dropdown {
  position: relative;
  padding: 10px 0;
}

.nav-dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: -10px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  padding: 8px 0;
}

.nav-dropdown-content::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  right: 0;
  height: 10px;
}

.nav-dropdown:hover .nav-dropdown-content {
  display: block;
}

.nav-dropdown-content a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text-gray);
}

.nav-dropdown-content a:hover {
  background: var(--bg-light);
  color: var(--primary-blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

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

.btn-primary:hover {
  background: var(--primary-blue-dark);
}

.btn-secondary {
  background: var(--bg-light);
  color: var(--text-dark);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
  text-align: center;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.hero h1 span {
  color: var(--primary-blue);
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-gray);
  margin-bottom: 24px;
}

.hero-trust {
  font-size: 16px;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-green) 0%, #8bc34a 100%);
  color: white;
  padding: 16px 56px;
  border-radius: 30px;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 32px;
  min-width: 280px;
  text-align: center;
}

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

/* Problem-Solution Section */
.problem-solution {
  padding: 80px 0;
  background: var(--bg-white);
}

.section-title {
  text-align: center;
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.section-subtitle {
  text-align: center;
  font-size: 18px;
  color: var(--text-gray);
  margin-bottom: 48px;
  font-weight: 500;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}

.comparison-card {
  background: #fff;
  border-radius: 20px;
  padding: 36px 32px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  transition: transform 0.2s, box-shadow 0.2s;
}

.comparison-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.comparison-card.before {
  border: 2px solid #fecaca;
  background: linear-gradient(180deg, #fff 0%, #fef2f2 100%);
}

.comparison-card.after {
  border: 2px solid #86efac;
  background: linear-gradient(180deg, #fff 0%, #f0fdf4 100%);
}

.comparison-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-dark);
}

.comparison-card.before h3 {
  color: #b91c1c;
}

.comparison-card.after h3 {
  color: #15803d;
}

.comparison-card ul {
  list-style: none;
}

.comparison-card li {
  padding: 14px 0;
  font-size: 16px;
  font-weight: 500;
  color: #374151;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.comparison-card.before li::before {
  content: "✕";
  color: #ef4444;
  font-weight: 700;
  font-size: 14px;
}

.comparison-card.after li::before {
  content: "✓";
  color: #22c55e;
  font-weight: 700;
  font-size: 16px;
}

.comparison-card li:last-child {
  border-bottom: none;
}

.arrow {
  font-size: 48px;
  color: white;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, #1d4ed8 100%);
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35), 0 4px 8px rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

/* Features Section */
.features {
  padding: 80px 0;
  background: var(--bg-light);
}

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

.feature-card {
  background: var(--bg-white);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-gray);
  margin-bottom: 16px;
}

.feature-card .btn {
  width: 100%;
  padding: 10px;
  font-size: 14px;
}

/* Custom Section */
.custom-section {
  padding: 80px 0;
  background: var(--bg-white);
}

.custom-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.custom-card {
  background: var(--bg-light);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
}

.custom-card h3 {
  font-size: 20px;
  margin-bottom: 16px;
  color: var(--primary-blue);
}

.custom-card p {
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.8;
  word-break: keep-all;
}

.example-boxes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.example-box {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border-radius: 12px;
  padding: 20px;
  border-left: 4px solid var(--primary-blue);
}

.example-box h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--primary-blue);
}

.example-box p {
  font-size: 14px;
  color: var(--text-gray);
}

/* Free Section */
.free-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
  color: white;
}

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

.free-section .section-subtitle {
  color: rgba(255,255,255,0.8);
}

.mini-faq {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.mini-faq-item {
  background: rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 24px;
}

.mini-faq-item h4 {
  font-size: 16px;
  margin-bottom: 12px;
}

.mini-faq-item p {
  font-size: 14px;
  opacity: 0.9;
  line-height: 1.6;
}

/* Screenshot Gallery */
.gallery {
  padding: 80px 0;
  background: var(--bg-light);
}

.gallery-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.gallery-tab {
  padding: 10px 20px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.gallery-tab.active,
.gallery-tab:hover {
  background: var(--primary-blue);
  color: white;
  border-color: var(--primary-blue);
}

.gallery-content {
  background: var(--bg-white);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow-md);
  max-width: 1000px;
  margin: 0 auto;
}

.gallery-image {
  display: none;
  text-align: center;
}

.gallery-image.active {
  display: block;
}

.gallery-image img {
  max-width: 100%;
  width: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

/* CTA Section */
.cta-section {
  padding: 80px 0;
  background: var(--bg-white);
}

.cta-box {
  background: linear-gradient(135deg, var(--bg-light) 0%, #e0e7ff 100%);
  border-radius: 24px;
  padding: 48px;
  text-align: center;
}

.cta-box h2 {
  font-size: 28px;
  margin-bottom: 16px;
}

.cta-box p {
  font-size: 16px;
  color: var(--text-gray);
  margin-bottom: 32px;
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 15px;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-blue);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  cursor: pointer;
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: white;
  padding: 48px 0 24px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
}

.footer-logo img {
  height: 32px;
  filter: brightness(0) invert(1);
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}

.footer-section h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-section a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  padding: 6px 0;
  transition: color 0.2s;
}

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

.footer-business {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
}

.footer-business p {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
}

.footer-business p:last-child {
  margin-bottom: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* Feature Page Styles */
.feature-hero {
  padding: 140px 0 60px;
  background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
}

.feature-hero h1 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 20px;
}

.feature-hero p {
  font-size: 18px;
  color: var(--text-gray);
  max-width: 700px;
}

.feature-content {
  padding: 60px 0;
}

.feature-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

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

.feature-list li {
  padding: 16px 0;
  padding-left: 32px;
  position: relative;
  font-size: 16px;
  border-bottom: 1px solid var(--border-color);
}

.feature-list li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary-green);
  font-weight: bold;
}

.feature-screenshot {
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  max-width: 700px;
}

.feature-screenshot img {
  width: 100%;
  display: block;
}

.feature-faq {
  padding: 60px 0;
  background: var(--bg-light);
}

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

.faq-item {
  background: var(--bg-white);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}

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

.faq-question:after {
  content: "+";
  font-size: 20px;
  color: var(--text-gray);
}

.faq-item.active .faq-question:after {
  content: "−";
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Pricing Page */
.pricing-hero {
  padding: 140px 0 60px;
  background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg-white) 100%);
  text-align: center;
}

.pricing-card {
  max-width: 500px;
  margin: 40px auto 0;
  background: var(--bg-white);
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--primary-green);
}

.pricing-card h3 {
  font-size: 24px;
  margin-bottom: 16px;
}

.pricing-amount {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary-green);
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 32px;
}

.pricing-features li {
  padding: 12px 0;
  padding-left: 28px;
  position: relative;
  border-bottom: 1px solid var(--border-color);
}

.pricing-features li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary-green);
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-white);
  padding: 20px;
  z-index: 999;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: 16px 0;
  font-size: 16px;
  border-bottom: 1px solid var(--border-color);
}

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

@media (max-width: 768px) {
  .nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
    margin-left: auto;
    padding: 12px 16px;
    font-size: 28px;
    min-width: 48px;
    min-height: 48px;
  }
  
  .hero h1 {
    font-size: 32px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .section-subtitle {
    font-size: 16px;
  }
  
  .comparison-grid {
    grid-template-columns: 1fr;
  }
  
  .arrow {
    transform: rotate(90deg);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    font-size: 32px;
    margin: 16px auto;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .custom-grid {
    grid-template-columns: 1fr;
  }
  
  .custom-card {
    padding: 24px 20px;
  }
  
  .custom-card p {
    font-size: 14px;
    line-height: 1.7;
  }
  
  .example-boxes {
    grid-template-columns: 1fr;
  }
  
  .mini-faq {
    grid-template-columns: 1fr;
  }
  
  .mini-faq-item {
    padding: 20px 16px;
  }
  
  .mini-faq-item p {
    font-size: 13px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .feature-points {
    grid-template-columns: 1fr;
  }
  
  .feature-hero h1 {
    font-size: 28px;
  }
  
  .feature-card p {
    font-size: 13px;
  }
  
  .comparison-card {
    padding: 28px 20px;
  }
  
  .comparison-card li {
    font-size: 14px;
    padding: 12px 0;
  }
  
  .cta-box {
    padding: 32px 20px;
  }
  
  .cta-box h2 {
    font-size: 22px;
  }
}

/* Mobile CTA Button */
.mobile-cta {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 998;
}

@media (max-width: 768px) {
  .mobile-cta {
    display: block;
  }
}