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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: #ffffff;
  color: #1f2937;
  line-height: 1.6;
}

a {
  color: #ec4899;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #db2777;
}

/* Container */
.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 1rem;
  max-width: 1280px;
}

@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

/* Header */
header {
  border-bottom: 1px solid #f3f4f6;
  background-color: #ffffff;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-size: 1.125rem;
  font-weight: 600;
  color: #1f2937;
}

.logo:hover {
  color: #ec4899;
}

nav {
  display: none;
  gap: 2rem;
  font-size: 0.875rem;
}

@media (min-width: 640px) {
  nav {
    display: flex;
  }
}

nav a {
  color: #6b7280;
}

nav a:hover {
  color: #ec4899;
}

/* Main content */
main {
  min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5rem 1rem;
  text-align: center;
}

@media (min-width: 640px) {
  .hero {
    padding: 8rem 1rem;
  }
}

.hero-content {
  max-width: 42rem;
}

.hero-logo {
  width: 8rem;
  height: 8rem;
  margin: 0 auto 3rem;
  display: block;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

@media (min-width: 640px) {
  .hero h1 {
    font-size: 3rem;
  }
}

.hero p {
  font-size: 1.125rem;
  color: #6b7280;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

/* Button */
.btn {
  display: inline-block;
  background-color: #ec4899;
  color: #ffffff;
  padding: 0.75rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 6px rgba(236, 72, 153, 0.1);
  text-decoration: none;
}

.btn:hover {
  background-color: #db2777;
  box-shadow: 0 10px 15px rgba(236, 72, 153, 0.2);
  transform: translateY(-2px);
}

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

.btn-full {
  width: 100%;
}

@media (min-width: 640px) {
  .btn-full {
    width: auto;
  }
}

/* Features Section */
.features {
  padding: 5rem 1rem;
  border-top: 1px solid #f3f4f6;
}

@media (min-width: 640px) {
  .features {
    padding: 7rem 1rem;
  }
}

.features-container {
  max-width: 48rem;
  margin: 0 auto;
}

.features h2 {
  font-size: 1.875rem;
  font-weight: 700;
  color: #1f2937;
  text-align: center;
  margin-bottom: 4rem;
}

@media (min-width: 640px) {
  .features h2 {
    font-size: 2.25rem;
  }
}

.feature-item {
  text-align: center;
  margin-bottom: 3rem;
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  background-color: #fce7f3;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 1.5rem;
}

.feature-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 0.75rem;
}

.feature-item p {
  color: #6b7280;
  font-size: 1rem;
}

/* CTA Section */
.cta {
  padding: 5rem 1rem;
  background-color: #f9fafb;
  border-top: 1px solid #f3f4f6;
  text-align: center;
}

@media (min-width: 640px) {
  .cta {
    padding: 7rem 1rem;
  }
}

.cta-container {
  max-width: 42rem;
  margin: 0 auto;
}

.cta h2 {
  font-size: 1.875rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .cta h2 {
    font-size: 2.25rem;
  }
}

.cta p {
  font-size: 1.125rem;
  color: #6b7280;
  margin-bottom: 2.5rem;
}

/* Footer */
footer {
  border-top: 1px solid #f3f4f6;
  background-color: #ffffff;
  padding: 2rem 1rem;
}

footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: #6b7280;
}

@media (min-width: 640px) {
  footer .container {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

@media (min-width: 640px) {
  .footer-nav {
    justify-content: flex-end;
  }
}

.footer-nav a {
  color: #6b7280;
}

.footer-nav a:hover {
  color: #ec4899;
}

/* Content Pages */
.content-page {
  padding: 4rem 1rem;
}

@media (min-width: 640px) {
  .content-page {
    padding: 6rem 1rem;
  }
}

.content-container {
  max-width: 48rem;
  margin: 0 auto;
}

.content-header {
  margin-bottom: 2rem;
}

.content-header h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

@media (min-width: 640px) {
  .content-header h1 {
    font-size: 2.25rem;
  }
}

.content-date {
  font-size: 0.875rem;
  color: #9ca3af;
}

.content-body {
  color: #4b5563;
  line-height: 1.8;
}

.content-body h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #1f2937;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.content-body h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #1f2937;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.content-body p {
  margin-bottom: 1rem;
}

.content-body ul,
.content-body ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.content-body li {
  margin-bottom: 0.5rem;
}

.content-body section {
  margin-bottom: 2rem;
}

.content-box {
  background-color: #f9fafb;
  padding: 1.5rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  margin: 1rem 0;
}

.back-link {
  display: inline-block;
  margin-bottom: 2rem;
  color: #ec4899;
  font-weight: 500;
}

.back-link:hover {
  color: #db2777;
}

/* Responsive */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 1.875rem;
  }

  .features h2,
  .cta h2 {
    font-size: 1.5rem;
  }

  .feature-item {
    margin-bottom: 2rem;
  }
}