:root {
    --tn-navy: #202960;
    --tn-text: #1a1a1a;
    --tn-muted: #333333;
    --tn-box-bg: #f8f9fa;
    --tn-warning-bg: #fff3cd;
    --tn-warning-border: #ffc107;
    --tn-rule: #cccccc;
    --tn-indent: 8px;
    --tn-max-width: 820px;
}

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

body {
    font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--tn-text);
    background: #ffffff;
    font-size: 17px;
    line-height: 1.6;
    max-width: var(--tn-max-width);
    margin: 0 auto;
    padding: 24px 16px 48px;
}

img {
    max-width: 140px;
    height: auto;
}

h1 {
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--tn-navy);
    margin: 0.4em 0 0.6em;
}

h2 {
    font-size: 1.45rem;
    color: var(--tn-navy);
    border-top: 1px solid var(--tn-navy);
    padding-top: 0.6em;
    margin-top: 2em;
    margin-bottom: 0.5em;
}

h3 {
    font-size: 1.15rem;
    color: var(--tn-navy);
    margin-top: 1.5em;
    margin-bottom: 0.4em;
}

p,
li {
    text-align: justify;
}

p {
    margin: 0.8em 0;
    padding: 0 var(--tn-indent);
}

ul,
ol {
    margin: 0.8em 0;
    padding-left: calc(var(--tn-indent) + 20px);
    padding-right: var(--tn-indent);
}

li {
    margin: 0.3em 0;
}

a {
    color: var(--tn-navy);
    overflow-wrap: anywhere;
}

hr {
    border: none;
    border-top: 1px solid var(--tn-rule);
    margin: 64px 0;
}

.english-link {
    font-size: 1rem;
    text-align: center;
    text-decoration: underline;
    border-top: none;
    margin-top: 0.5em;
    padding: 0;
}

.tip,
.info {
    background-color: var(--tn-box-bg);
    border-left: 4px solid var(--tn-navy);
    padding: 12px 16px;
    margin: 16px var(--tn-indent);
}

.warning {
    background-color: var(--tn-warning-bg);
    border-left: 4px solid var(--tn-warning-border);
    padding: 12px 16px;
    margin: 16px var(--tn-indent);
}

.tip,
.info,
.warning {
    li {
        text-align: left;
    }
}

.screenshot {
    max-width: 300px;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 5px;
    margin: 10px var(--tn-indent);
}

.release-date {
    padding: 0;
}

details {
    border: 1px solid var(--tn-rule);
    border-radius: 5px;
    margin: 10px 0;
    padding: 16px 12px;
    background: #f1f1f1;
}

summary {
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    color: var(--tn-muted);
    list-style: none;
}

details[open] {
    background: #e9ecef;
}

details > *:not(summary) {
    margin-top: 10px;
}

@media print {
    body.printable {
        font-size: 11.5pt;
        line-height: 1.45;
        max-width: none;
        margin: 0;
        padding: 0;
        color: #000;
    }

    .printable h1,
    .printable h2,
    .printable h3 {
        color: #000;
        break-after: avoid;
        page-break-after: avoid;
    }

    .printable h2 {
        border-top-color: #000;
        margin-top: 1.4em;
    }

    .printable p,
    .printable li {
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .printable a {
        color: #000;
        text-decoration: underline;
    }

    .printable hr {
        margin: 24px 0;
    }

    .printable .tip,
    .printable .info,
    .printable .warning,
    .printable .screenshot {
        break-inside: avoid;
        page-break-inside: avoid;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}