/* Zenn-inspired Simple Design */

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

:root {
    /* Simple Color Palette */
    --color-primary: #3EA8FF;
    --color-primary-hover: #2D96E8;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-lighter: #999999;
    --color-bg: #ffffff;
    --color-bg-secondary: #F8F9FA;
    --color-border: #E5E7EB;
    --color-border-light: #F3F4F6;
    --color-accent: #FFD700;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
}

body {
    font-family: 'Roboto', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Hero Section */
.hero {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
    padding: 60px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
}

.hero p {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-light);
}

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

.section h2 {
    text-align: center;
    margin-bottom: 2.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-text);
}

/* Content Section */
.content {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem;
    background: var(--color-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.content h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--color-text);
    font-weight: 700;
    position: relative;
    padding-bottom: 1rem;
}

.content h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
    border-radius: 2px;
}

.content h2 {
    font-size: 1.4rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--color-text);
    font-weight: 700;
    padding: 1rem 1.25rem;
    background: var(--color-bg-secondary);
    border-left: 4px solid var(--color-primary);
    border-radius: 8px;
}

.content h3 {
    font-size: 1.2rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
    font-weight: 600;
    padding-left: 1rem;
    border-left: 3px solid var(--color-border);
}

.content p {
    margin-bottom: 1.25rem;
    color: var(--color-text);
    line-height: 1.8;
}

.content ul,
.content ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.content li {
    margin-bottom: 0.75rem;
    line-height: 1.8;
    color: var(--color-text);
}

.content a {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-bottom 0.2s;
}

.content a:hover {
    border-bottom: 1px solid var(--color-primary);
}

/* Footer */
footer {
    background: var(--color-bg-secondary);
    color: var(--color-text-light);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--color-border-light);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .section {
        padding: 60px 0;
    }

    .section h2 {
        font-size: 1.5rem;
    }

    .content {
        padding: 1.5rem;
    }

    .content h1 {
        font-size: 1.75rem;
    }

    .content h2 {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .section {
        padding: 40px 0;
    }

    .container {
        padding: 0 1rem;
    }

    .content {
        padding: 1rem;
    }

    .content h1 {
        font-size: 1.5rem;
    }
}

/* Privacy Policy / Terms Specific Styles */
.privacy-intro {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--color-bg-secondary);
    border-left: 4px solid var(--color-primary);
    border-radius: 8px;
    line-height: 1.8;
}

.content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 2rem 0 1rem;
    padding-left: 0.75rem;
    border-left: 3px solid var(--color-primary);
}

.content ol,
.content ul {
    margin: 1rem 0 1.5rem 1.5rem;
    line-height: 1.9;
}

.content li {
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.content ol li {
    padding-left: 0.5rem;
}

.info-box {
    background: var(--color-bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    margin: 1.5rem 0;
    border: 1px solid var(--color-border);
}

.contact-card {
    background: var(--color-bg-secondary);
    padding: 1.25rem;
    border-radius: 8px;
    border-left: 3px solid var(--color-primary);
    margin: 1rem 0;
}

.date-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.date-card {
    background: var(--color-bg-secondary);
    padding: 1.25rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: transform 0.2s;
}

.date-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.date-label {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.date-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
}