:root {
    --accent: #326198;
    --border: #d5dbe2;
    --bg: #f5f7fa;
    --card-bg: #ffffff;
    --text: #2b2f36;
    --text-muted: #5b6470;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 24px 16px 60px;
    background: var(--bg);
    color: var(--text);
    font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", Helvetica, Arial, sans-serif;
    line-height: 1.7;
    font-size: 15px;
}

.page {
    max-width: 760px;
    margin: 0 auto;
}

.masthead {
    text-align: center;
    margin-bottom: 28px;
}

.masthead .app-name {
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.masthead h1 {
    font-size: 24px;
    color: var(--accent);
    margin: 4px 0 0;
}

.masthead .updated {
    margin-top: 10px;
    font-size: 12px;
    color: var(--text-muted);
}

.intro {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 20px;
    margin-bottom: 20px;
    font-size: 14px;
    color: var(--text-muted);
}

section.clause {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 26px 20px 18px;
    margin: 28px 0;
}

section.clause > h2 {
    position: absolute;
    top: -14px;
    left: 16px;
    background: var(--bg);
    padding: 2px 10px;
    margin: 0;
    font-size: 15px;
    color: var(--accent);
    border: 1px solid var(--border);
    border-radius: 999px;
}

section.clause h3 {
    font-size: 14px;
    color: var(--text);
    margin: 16px 0 6px;
}

section.clause p {
    font-size: 13.5px;
    margin: 8px 0;
}

section.clause ol,
section.clause ul {
    padding-left: 1.4em;
    margin: 8px 0;
}

section.clause li {
    font-size: 13.5px;
    margin: 6px 0;
}

section.clause li > p {
    margin: 4px 0;
}

.sub {
    padding-left: 1.2em;
    color: var(--text-muted);
}

a {
    color: var(--accent);
    word-break: break-all;
}

.contact-box {
    background: #eef3f9;
    border: 1px dashed var(--border);
    border-radius: 10px;
    padding: 14px 16px;
    font-size: 13.5px;
}

footer.page-footer {
    text-align: center;
    margin-top: 36px;
    font-size: 12px;
    color: var(--text-muted);
}