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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: #1a1a1a;
    background: #ffffff;
    padding: 0;
    margin: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 24px;
}

header {
    margin-bottom: 48px;
    padding-bottom: 32px;
    border-bottom: 2px solid #e5e7eb;
}

h1 {
    font-size: 2.25rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.meta {
    font-size: 0.9375rem;
    color: #6b7280;
    font-weight: 500;
}

.intro {
    font-size: 1.0625rem;
    color: #374151;
    margin-bottom: 24px;
    line-height: 1.75;
}

.notice {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 16px 20px;
    margin: 24px 0;
    border-radius: 4px;
}

.notice p {
    color: #92400e;
    font-weight: 500;
}

h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
    margin-top: 48px;
    margin-bottom: 20px;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
    margin-top: 32px;
    margin-bottom: 16px;
}

p {
    margin-bottom: 16px;
    color: #374151;
    font-size: 1rem;
}

ul {
    margin-bottom: 20px;
    padding-left: 24px;
}

li {
    margin-bottom: 12px;
    color: #374151;
    line-height: 1.7;
}

li strong {
    color: #111827;
    font-weight: 600;
}

a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

hr {
    margin: 40px 0;
    border: 0;
    border-top: 1px solid #e5e7eb;
}

.section {
    margin-bottom: 40px;
}

.contact-info {
    background: #f9fafb;
    padding: 24px;
    border-radius: 8px;
    margin-top: 24px;
    border: 1px solid #e5e7eb;
}

.contact-info p {
    margin-bottom: 8px;
}

.contact-info p:last-child {
    margin-bottom: 0;
}

@media (max-width: 640px) {
    .container {
        padding: 40px 20px;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.25rem;
        margin-top: 36px;
    }

    h3 {
        font-size: 1.0625rem;
    }
}