/* 全站頁尾。各頁 <footer class="site-footer"> 標記相同，樣式只放這支。 */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 2.75rem 0 1.75rem;
    text-align: left;
    background: transparent;
}

.site-footer-inner {
    max-width: var(--max, 1080px);
    margin: 0 auto;
    padding: 0 var(--gutter, clamp(1.25rem, 5vw, 3rem));
    display: grid;
    grid-template-columns: minmax(16rem, 1.45fr) repeat(3, minmax(0, 1fr));
    gap: 2rem 2.5rem;
    align-items: start;
}

.site-footer .footer-logo {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--sub);
    text-decoration: none;
    letter-spacing: 0.03em;
    display: inline-flex;
    align-items: center;
    min-height: 2rem;
}

.site-footer .footer-logo em {
    font-style: normal;
    color: var(--gold-dim);
}

.site-footer .nav-logo-prefix {
    font-family: 'Noto Sans TC', sans-serif;
    margin-right: 4px;
}

.site-footer-tagline {
    font-family: var(--font-body);
    font-size: var(--t-sm, 0.9rem);
    font-weight: 400;
    line-height: 1.75;
    color: var(--text);
    margin: 0.35rem 0 0;
    max-width: 16em;
}

/* 信封圖示：Phosphor Icons Light（envelope）。MIT。全文見 /licenses/phosphor-icons-MIT.txt */
.site-footer-contact {
    list-style: none;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.6rem;
    margin: 1rem 0 0;
    padding: 0;
    max-width: 100%;
}

.site-footer-tile {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 44px;
    min-width: 0;
    max-width: 100%;
    padding: 0.3rem 0.9rem 0.3rem 0.35rem;
    border: 1px solid var(--border-mid);
    border-radius: 999px;
    background: var(--surface, #FBF8F2);
    color: var(--cream);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    line-height: 1;
    text-decoration: none;
    transition: border-color 0.2s, background 0.2s;
}

.site-footer-tile-icon {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    flex: none;
    background: var(--gold-faint);
    color: var(--gold);
}

.site-footer-tile-icon svg {
    width: 18px;
    height: 18px;
    display: block;
}

.site-footer-tile--line {
    padding: 0;
    gap: 0;
    border: 0;
    border-radius: 12px;
    background: transparent;
}
.site-footer-tile--line:hover { background: transparent; opacity: 0.85; }

.site-footer-tile--line .site-footer-tile-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: transparent;
    overflow: hidden;
}

.site-footer-tile--line .site-footer-tile-icon img {
    width: 44px;
    height: 44px;
    display: block;
}

.site-footer-tile--mail {
    width: 44px;
    height: 44px;
    padding: 0;
    gap: 0;
    justify-content: center;
    border-radius: 12px;
    background: var(--gold-faint);
}
.site-footer-tile--mail .site-footer-tile-icon { width: 44px; height: 44px; border-radius: 12px; background: transparent; }
.site-footer-tile--mail .site-footer-tile-icon svg { width: 24px; height: 24px; }

.site-footer-tile:hover {
    border-color: var(--gold-dim);
    background: var(--gold-faint);
    color: var(--cream);
}

.site-footer-col h2 {
    margin: 0;
    padding: 0.35rem 0 0.1rem;
    border: 0;
    font-family: var(--font-body);
    font-size: var(--t-label, 0.75rem);
    font-weight: 500;
    letter-spacing: 0.12em;
    line-height: 1.4;
    color: var(--gold-dim);
}

.site-footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-footer-col a {
    display: flex;
    align-items: center;
    min-height: 2rem;
    padding: 0.15rem 0;
    font-family: var(--font-body);
    font-size: var(--t-sm, 0.9rem);
    font-weight: 400;
    line-height: 1.45;
    letter-spacing: 0.02em;
    color: var(--sub);
    text-decoration: none;
    transition: color 0.2s;
}

.site-footer-col a:hover {
    color: var(--gold-dim);
}

.site-footer-legal {
    max-width: var(--max, 1080px);
    margin: 1.75rem auto 0;
    padding: 1rem var(--gutter, clamp(1.25rem, 5vw, 3rem)) 0;
    border-top: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: var(--t-label, 0.75rem);
    font-weight: 300;
    letter-spacing: 0.06em;
    line-height: 1.6;
    color: var(--sub);
}

@media (max-width: 759px) {
    .site-footer {
        padding: 2.25rem 0 1.5rem;
    }

    .site-footer-inner {
        grid-template-columns: 1fr;
        gap: 1.35rem;
    }

    .site-footer-tagline {
        max-width: none;
    }

    .site-footer .footer-logo,
    .site-footer-col a {
        min-height: 44px;
    }

    .site-footer-col h2 {
        padding-top: 0.2rem;
    }
}

/* 兩個聯絡圖示同尺寸、同基線 */
.site-footer-contact li { display: flex; line-height: 0; }
.site-footer-tile--line,
.site-footer-tile--mail {
    box-sizing: border-box;
    width: 44px;
    height: 44px;
    min-height: 0;
    padding: 0;
    border: 0;
    border-radius: 12px;
    overflow: hidden;
    vertical-align: top;
}
.site-footer-tile--mail { background: #E8DDC9; }
.site-footer-tile--mail:hover { background: #E0D2BA; }