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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --text: #1e293b;
  --text-muted: #64748b;
  --bg: #f8fafc;
  --white: #ffffff;
  --border: #e2e8f0;
  --radius: 12px;
}

body {
  font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

/* Hero */
.hero {
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%);
  color: var(--white);
  padding: 100px 0 120px;
  text-align: center;
}

.badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,0.3);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
}

.subtitle {
  font-size: 1.125rem;
  opacity: 0.85;
  max-width: 560px;
  margin: 0 auto 40px;
}

.cta-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--white);
  color: var(--primary);
}
.btn-primary:hover { background: #f0f7ff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.1); }

/* Features */
.features {
  padding: 100px 0;
}

.features h2, .contact h2 {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 60px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: 0 12px 40px rgba(0,0,0,0.08); transform: translateY(-4px); }

.icon { font-size: 2.5rem; margin-bottom: 16px; }

.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

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

/* Contact */
.contact {
  background: var(--white);
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

.contact > .container > p {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.contact-form {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--primary); }

.contact-form .btn { align-self: flex-start; color: var(--white); background: var(--primary); }
.contact-form .btn:hover { background: var(--primary-dark); }

/* Footer */
footer {
  background: var(--text);
  color: rgba(255,255,255,0.6);
  padding: 40px 0;
  text-align: center;
}

footer p { font-size: 0.875rem; margin-bottom: 8px; }
.version { font-size: 0.75rem; opacity: 0.5; font-family: monospace; }