/* BBCubee brand palette derived from logo */
:root {
    --brand-blue: #4f82c0;
    --brand-blue-deep: #2a5ca0;
    --brand-blue-dark: #1f4780;
    --brand-gold: #f0b000;
    --brand-orange: #e08010;
    --brand-silver: #d1d3d4;
    --brand-silver-soft: #eef1f5;
    --text: #243447;
    --muted: #6b7c8f;
    --border: #d8e0ea;
    --bg: #f4f7fb;
    --card: #ffffff;
    --link: #2a5ca0;
    --link-hover: #1f4780;
    --note-bg: #fff8ec;
    --note-border: #f0b000;
    --accent-text: #c46a00;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", sans-serif;
    color: var(--text);
    background:
        linear-gradient(135deg, rgba(240, 176, 0, 0.08) 0%, transparent 28%),
        linear-gradient(225deg, rgba(42, 92, 160, 0.08) 0%, transparent 30%),
        var(--bg);
    line-height: 1.8;
}

.wrap {
    max-width: 820px;
    margin: 0 auto;
    padding: 28px 20px 64px;
}

.brand-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.brand-bar img.logo {
    display: block;
    height: 42px;
    width: auto;
}

.brand-bar .mark {
    height: 40px;
    width: auto;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px 32px;
    box-shadow: 0 8px 24px rgba(31, 71, 128, 0.06);
    border-top: 4px solid var(--brand-blue-deep);
}

h1 {
    margin: 0 0 8px;
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--brand-blue-dark);
}

h2 {
    margin: 28px 0 12px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--brand-blue-dark);
    border-left: 4px solid var(--brand-gold);
    padding-left: 10px;
}

h3 {
    margin: 20px 0 8px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--brand-blue-deep);
}

p { margin: 0 0 1.1em; }

.hl {
    color: var(--accent-text);
    font-weight: 700;
}

a {
    color: var(--link);
    text-decoration: none;
    border-bottom: 1px solid rgba(42, 92, 160, 0.25);
}

a:hover {
    color: var(--link-hover);
    border-bottom-color: var(--link-hover);
}

ol, ul {
    margin: 0 0 1.1em;
    padding-left: 1.4em;
}

ol li, ul li { margin-bottom: 0.5em; }

.note {
    background: var(--note-bg);
    border: 1px solid #f5d98a;
    border-left: 4px solid var(--brand-gold);
    border-radius: 8px;
    padding: 12px 16px;
    margin: 0 0 1.2em;
}

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

.example,
.contact {
    background: var(--brand-silver-soft);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    margin: 0 0 1.2em;
}

.example p,
.contact p {
    margin: 0.35em 0;
}

.contact p { margin: 0.25em 0; }

.muted {
    color: var(--muted);
    font-size: 0.95rem;
}

.steps {
    margin: 0 0 1.2em;
    padding-left: 1.4em;
}

.steps > li {
    margin-bottom: 1.2em;
}

figure {
    margin: 0.6em 0 0;
}

figure img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
}

figcaption {
    color: var(--muted);
    font-size: 0.85rem;
    margin-top: 6px;
}

.doc-meta {
    margin: 0 0 22px;
    color: var(--muted);
    font-size: 0.92rem;
}

.footer-note {
    margin-top: 28px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
    color: var(--muted);
    font-size: 0.92rem;
}

@media (max-width: 600px) {
    .card { padding: 22px 18px; }
    .brand-bar img.logo { height: 34px; }
}