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

:root {
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --secondary: #EC4899;
  --bg: #F9FAFB;
  --bg-alt: #F3F4F6;
  --text: #111827;
  --text-light: #6B7280;
  --border: #E5E7EB;
  --white: #FFFFFF;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius: 12px;
  --radius-sm: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

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

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

/* Header */
.header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.logo svg {
  width: 40px;
  height: 40px;
  fill: var(--primary);
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-weight: 500;
  color: var(--text-light);
  transition: color 0.2s;
  text-decoration: none;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn svg {
  width: 28px;
  height: 28px;
  stroke: var(--text);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 120px 0 100px;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  font-size: 1.125rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--white);
  color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  text-decoration: none;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  text-decoration: none;
}

.cta-btn {
  background: var(--secondary);
  color: var(--white);
  font-weight: 700;
  padding: 18px 36px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow);
}

.cta-btn:hover {
  background: #DB2777;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.cta-floating {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  padding: 16px 28px;
  font-size: 1rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

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

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 60px;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-top: 60px;
}

.feature-card {
  background: var(--white);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

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

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.feature-card svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
  fill: none;
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.7;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 60px;
}

.step {
  text-align: center;
}

.step-number {
  width: 64px;
  height: 64px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 24px;
}

.step h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.step p {
  color: var(--text-light);
}

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

.faq-item {
  background: var(--white);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  font-size: 1.125rem;
  font-weight: 600;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
}

.faq-question svg {
  width: 24px;
  height: 24px;
  transition: transform 0.3s;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.faq-question[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.faq-answer-content {
  padding: 0 0 24px;
  color: var(--text-light);
  line-height: 1.7;
}

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

/* Blog */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
  margin-top: 60px;
}

.blog-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

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

.blog-card-content {
  padding: 24px;
}

.blog-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  line-height: 1.4;
}

.blog-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.blog-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
}

.blog-link svg {
  width: 20px;
  height: 20px;
}

/* Article */
.article {
  max-width: 800px;
  margin: 0 auto;
}

.article h1 {
  font-size: 2.5rem;
  line-height: 1.2;
  margin-bottom: 24px;
}

.article-meta {
  color: var(--text-light);
  margin-bottom: 32px;
  font-size: 0.95rem;
}

.article h2 {
  font-size: 1.75rem;
  margin: 40px 0 20px;
  color: var(--text);
}

.article p {
  margin-bottom: 20px;
  line-height: 1.8;
  color: var(--text);
}

.article ul, .article ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article li {
  margin-bottom: 12px;
  line-height: 1.7;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  margin-bottom: 32px;
  font-weight: 500;
}

.back-link svg {
  width: 20px;
  height: 20px;
}

/* Forms */
.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: border-color 0.2s;
}

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

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* Footer */
.footer {
  background: var(--text);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer h4 {
  font-size: 1.125rem;
  margin-bottom: 20px;
}

.footer a {
  color: rgba(255, 255, 255, 0.7);
  display: block;
  margin-bottom: 12px;
}

.footer a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

/* Mobile */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    box-shadow: var(--shadow);
  }

  .nav.open {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.125rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .cta-floating {
    bottom: 16px;
    right: 16px;
    padding: 14px 24px;
    font-size: 0.95rem;
  }
}

/* Utility */
.text-center { text-align: center; }
.mt-4 { margin-top: 24px; }
.mt-8 { margin-top: 48px; }
.mb-4 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 48px; }
.mx-auto { margin-left: auto; margin-right: auto; }
.w-full { width: 100%; }
.opacity-80 { opacity: 0.8; }
.lh-1-6 { line-height: 1.6; }
.fst-italic { font-style: italic; }
.mb-3 { margin-bottom: 12px; }
.mt-5 { margin-top: 20px; }
.list-unstyled { list-style: none; padding: 0; }
.link-plain { color: inherit; text-decoration: none; }
.link-plain:hover { text-decoration: none; }
.btn-lg { font-size: 1.25rem; padding: 20px 40px; }
.footer-text { opacity: 0.8; line-height: 1.6; }
.testimonial-text { font-style: italic; margin-bottom: 16px; }
.limit-width { max-width: 600px; }
.text-muted { color: var(--text-light); }