:root {
    --bg: #ffffff;
    --fg: #1a1a1a;
    --fg-secondary: #555555;
    --accent: #004225;
    --border: #e5e5e5;
    --card-bg: #f7f8f7;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #14161a;
        --fg: #eaeaea;
        --fg-secondary: #a8a8a8;
        --accent: #4caf7d;
        --border: #2a2d33;
        --card-bg: #1c1f24;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Apple SD Gothic Neo",
        "Malgun Gothic", sans-serif;
    line-height: 1.7;
}

.page {
    max-width: 680px;
    margin: 0 auto;
    padding: 48px 24px 80px;
}

.app-name {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.02em;
    margin-bottom: 8px;
}

h1 {
    font-size: 26px;
    margin: 0 0 6px;
}

.effective-date {
    color: var(--fg-secondary);
    font-size: 14px;
    margin-bottom: 36px;
}

.nav-links {
    margin-bottom: 40px;
    font-size: 14px;
}

.nav-links a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.nav-links a:hover {
    text-decoration: underline;
}

article + article {
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}

h2 {
    font-size: 17px;
    margin: 0 0 10px;
}

p {
    margin: 0 0 8px;
    color: var(--fg);
    font-size: 15px;
}

p.secondary {
    color: var(--fg-secondary);
}

.contact-email {
    display: inline-block;
    margin-top: 4px;
    padding: 4px 10px;
    background: var(--card-bg);
    border-radius: 6px;
    font-weight: 600;
    color: var(--accent);
}

.card-index {
    display: block;
    padding: 20px 22px;
    margin-bottom: 14px;
    background: var(--card-bg);
    border-radius: 12px;
    text-decoration: none;
    color: var(--fg);
    border: 1px solid var(--border);
}

.card-index:hover {
    border-color: var(--accent);
}

.card-index .title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
}

.card-index .desc {
    font-size: 13px;
    color: var(--fg-secondary);
}

footer {
    margin-top: 48px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    color: var(--fg-secondary);
}