@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;600;700&display=swap');

:root {
  --primary-color: #6C63FF;
  --primary-hover: #8EA0FF;
  --bg-color: #0B0E17;
  --surface-color: #161A2B;
  --surface-hover: #1E233A;
  --text-primary: #FFFFFF;
  --text-secondary: #9BA1BD;
  --text-muted: #626A87;
  --border-color: rgba(255, 255, 255, 0.08);
  --success: #4ADE80;
  --error: #F87171;
  --font-family: 'Inter', 'Noto Sans JP', sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--primary-hover);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header / Nav */
.header {
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(11, 14, 23, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.modern-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-logo {
  height: 32px;
  width: auto;
}

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

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
  padding: 80px 0;
  text-align: center;
}

.eyebrow {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 40px;
}

/* Buttons */
.cta-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 28px;
  height: 48px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

.button.primary {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
}

.button.primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(108, 99, 255, 0.25);
  color: #fff;
}

.button.secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.button.secondary:hover {
  background-color: var(--surface-color);
  color: var(--text-primary);
}

/* Split Layout (Apple-like Zigzag) */
.split-section {
  padding: 100px 0;
  display: flex;
  align-items: center;
  gap: 64px;
}

.split-section.reverse {
  flex-direction: row-reverse;
}

.split-content {
  flex: 1;
}

.split-content h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.split-content p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.split-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Image Placeholder for Mockups */
.mockup-placeholder {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 9 / 19.5; /* Mobile phone aspect ratio */
  background: linear-gradient(145deg, var(--surface-color), var(--surface-hover));
  border: 1px solid var(--border-color);
  border-radius: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.mockup-placeholder:hover {
  transform: translateY(-10px) scale(1.02);
}

.mockup-placeholder::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 30px;
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mockup-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

/* Section */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 48px;
}

/* Grid & Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
  border-color: rgba(255, 255, 255, 0.15);
}

.card-icon {
  width: 48px;
  height: 48px;
  background-color: rgba(108, 99, 255, 0.1);
  color: var(--primary-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 24px;
}

.card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 48px 0;
  margin-top: 48px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    height: auto;
    padding: 16px 0;
    gap: 16px;
  }
  
  .hero {
    padding: 48px 0;
  }
  
  h1 {
    font-size: 2.25rem;
  }

  .split-section,
  .split-section.reverse {
    flex-direction: column;
    text-align: center;
    gap: 40px;
    padding: 60px 0;
  }
}