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

:root {
  --primary: #2e7d32;
  --primary-light: #4caf50;
  --primary-dark: #1b5e20;
  --text: #333;
  --text-light: #666;
  --bg: #fff;
  --bg-alt: #f8faf8;
  --border: #e0e0e0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  color: var(--text);
  line-height: 1.8;
  background: var(--bg);
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

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

.nav a {
  text-decoration: none;
  color: var(--text);
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  padding: 160px 0 100px;
  background: linear-gradient(135deg, var(--bg) 0%, var(--bg-alt) 100%);
  border-bottom: 1px solid var(--border);
}

.hero h2 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 16px;
  color: var(--text);
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-light);
}

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

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

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--primary);
  display: inline-block;
}

.section-text {
  font-size: 1rem;
  color: var(--text);
  line-height: 2;
}

/* Skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}

.skill-category h4 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.skill-category ul {
  list-style: none;
}

.skill-category li {
  padding: 6px 0;
  color: var(--text);
}

.skill-category li::before {
  content: '·';
  color: var(--primary);
  font-weight: bold;
  margin-right: 8px;
}

/* Strengths */
.strengths-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.strength-item {
  padding: 24px;
  background: var(--bg-alt);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.strength-item h4 {
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.strength-item p {
  font-size: 0.95rem;
  color: var(--text-light);
}

/* Contact */
.contact-button {
  display: inline-block;
  margin-top: 24px;
  padding: 16px 40px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  font-size: 1rem;
  transition: background 0.2s;
}

.contact-button:hover {
  background: var(--primary-dark);
}

/* Footer */
.footer {
  padding: 32px 0;
  background: var(--text);
  color: #fff;
  text-align: center;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    height: auto;
    padding: 16px 24px;
    gap: 12px;
  }

  .nav {
    gap: 20px;
  }

  .hero {
    padding: 140px 0 60px;
  }

  .hero h2 {
    font-size: 1.8rem;
  }

  .section {
    padding: 60px 0;
  }

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