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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.logo {
    font-size: 3.5em;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero h2 {
    font-size: 1.8em;
    margin-bottom: 15px;
    font-weight: normal;
}

.subtitle {
    font-size: 1.2em;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.cta-button {
    display: inline-block;
    background: #ff6b6b;
    color: white;
    padding: 18px 50px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.3em;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    background: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.free-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 25px;
    border-radius: 25px;
    font-size: 0.95em;
}

/* Section共通 */
section {
    padding: 80px 20px;
}

.section-title {
    font-size: 2.2em;
    text-align: center;
    margin-bottom: 50px;
    color: #333;
}

.service-name {
    color: #667eea;
    font-weight: bold;
}

/* Problems Section */
.problems {
    background: white;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.problem-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s;
}

.problem-card:hover {
    transform: translateY(-5px);
}

.problem-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.problem-card h3 {
    font-size: 1.3em;
    margin-bottom: 15px;
    color: #667eea;
}

.problem-card p {
    color: #666;
    line-height: 1.7;
}

/* Features Section */
.features {
    background: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 35px;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: 35px;
    border-radius: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.feature-card:hover {
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
    transform: translateY(-3px);
}

.feature-icon {
    font-size: 3em;
    margin-bottom: 20px;
    text-align: center;
}

.feature-card h3 {
    font-size: 1.4em;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

/* Use Cases Section */
.use-cases {
    background: #f8f9fa;
}

.use-case-list {
    max-width: 800px;
    margin: 0 auto;
}

.use-case-item {
    background: white;
    padding: 25px 30px;
    margin-bottom: 20px;
    border-radius: 10px;
    border-left: 4px solid #667eea;
}

.use-case-item h3 {
    color: #667eea;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.use-case-item p {
    color: #666;
    line-height: 1.7;
}

/* How it Works */
.how-it-works {
    background: white;
}

.steps {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    min-width: 250px;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #667eea;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 1.4em;
    margin-bottom: 10px;
    color: #333;
}

.step p {
    color: #666;
    line-height: 1.7;
}

/* Privacy Section */
.privacy {
    background: white;
    text-align: center;
}

.privacy h2 {
    font-size: 2em;
    margin-bottom: 25px;
    color: #333;
}

.privacy p {
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1em;
    line-height: 1.8;
    color: #666;
}

/* Final CTA */
.final-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 80px 20px;
}

.final-cta h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
}

.final-cta p {
    font-size: 1.2em;
    margin-bottom: 40px;
}

/* Footer */
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 30px 20px;
}

footer p {
    font-size: 0.9em;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .logo {
        font-size: 2.5em;
    }

    .hero h2 {
        font-size: 1.4em;
    }

    .subtitle {
        font-size: 1em;
    }

    .section-title {
        font-size: 1.6em;
    }

    .cta-button {
        font-size: 1.1em;
        padding: 15px 35px;
    }
}