:root {
    --header-bg: rgba(244, 241, 234, 0.97);
    --header-border: rgba(0,0,0,0.06);
    --header-text: #2c2c2c;
    --header-muted: #77736d;
    --header-accent: #8c3f3f;
    --header-panel: #fffaf3;
}
#site-header { position: sticky; top: 0; z-index: 200; }
.site-header {
    padding: 10px 24px;
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    backdrop-filter: blur(8px);
}
.site-header .header-inner {
    max-width: 1460px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 34px;
}
.site-header .brand {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    line-height: 1;
    text-decoration: none;
}
.site-header .brand-logo-frame {
    display: block;
    height: 73px;
    overflow: hidden;
    line-height: 0;
}
.site-header .header-logo-img {
    width: auto;
    height: 96px;
    image-rendering: auto;
    display: block;
}
.site-header .brand-cn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 150px;
    max-width: 100%;
    margin-top: 14px;
    color: #2c2c2c;
    font-family: 'Noto Serif TC', 'Noto Sans TC', serif;
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.28em;
    line-height: 1;
    white-space: nowrap;
}
.site-header .brand-cn::before,
.site-header .brand-cn::after {
    content: "";
    height: 1px;
    flex: 1 1 auto;
    min-width: 16px;
    background: rgba(142,116,79,0.62);
}
.site-header .main-nav {
    flex: 1 1 auto;
    min-width: 0;
}
.site-header .main-nav ul,
.site-header .main-nav li {
    list-style: none;
    margin: 0;
    padding: 0;
}
.site-header .main-nav > ul {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: flex-end;
    gap: clamp(18px, 2vw, 38px);
    flex-wrap: nowrap;
}
.site-header .nav-item {
    position: relative;
}
.site-header .nav-item.has-children > .nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 48px;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid var(--header-accent);
    opacity: 0.72;
}
.site-header .nav-link {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 64px;
    padding-top: 8px;
    box-sizing: border-box;
    color: var(--header-text);
    white-space: nowrap;
    transition: color 0.2s ease;
}
.site-header .nav-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: clamp(0.98rem, 0.92vw, 1.1rem);
    font-weight: 600;
    letter-spacing: 0.08em;
    line-height: 1.25;
}
.site-header .nav-sub {
    margin-top: 8px;
    font-size: 0.68rem;
    color: var(--header-muted);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    line-height: 1.15;
}
.site-header .nav-link:hover,
.site-header .nav-item.is-active > .nav-link {
    color: var(--header-accent);
}
.site-header .nav-item.is-active .nav-sub,
.site-header .nav-link:hover .nav-sub {
    color: var(--header-accent);
}
.site-header .nav-new-badge-wrap {
    position: static;
    display: inline-flex;
    align-items: center;
    line-height: 0;
    pointer-events: none;
    transform: translateY(-1px);
}
.site-header .nav-new-badge {
    width: 30px;
    height: auto;
    display: block;
}
.site-header .subnav {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 190px;
    padding: 8px;
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 8px;
    background: rgba(255,250,243,0.98);
    box-shadow: 0 18px 42px rgba(44,44,44,0.14);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
}
.site-header .subnav::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -12px;
    height: 12px;
}
.site-header .nav-item:hover .subnav,
.site-header .nav-item:focus-within .subnav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}
.site-header .subnav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 9px 11px;
    border-radius: 6px;
    color: var(--header-text);
    font-size: 0.92rem;
    line-height: 1.35;
    white-space: nowrap;
}
.site-header .subnav a:hover,
.site-header .subnav a.is-current {
    background: #f4e7df;
    color: var(--header-accent);
}
.site-header .subnav a.is-current {
    font-weight: 600;
    box-shadow: inset 3px 0 0 var(--header-accent);
}
.site-header .subnav-new-badge {
    width: 30px;
    height: auto;
    display: inline-block;
    flex: 0 0 auto;
}


@media (max-width: 1500px) {
    .site-header {
        padding-left: 18px;
        padding-right: 18px;
    }
    .site-header .header-inner {
        max-width: none;
        width: 100%;
        gap: 16px;
    }
    .site-header .brand-logo-frame {
        height: 64px;
    }
    .site-header .header-logo-img {
        height: 84px;
    }
    .site-header .brand-cn {
        width: 136px;
        margin-top: 11px;
        font-size: 0.74rem;
        letter-spacing: 0.24em;
    }
    .site-header .main-nav > ul {
        gap: clamp(10px, 1.05vw, 22px);
    }
    .site-header .nav-label {
        font-size: clamp(0.84rem, 0.92vw, 0.98rem);
        letter-spacing: 0.045em;
    }
    .site-header .nav-sub {
        font-size: 0.6rem;
        letter-spacing: 0.12em;
    }
    .site-header .nav-new-badge {
        width: 26px;
    }
}

@media (max-width: 1360px) {
    .site-header .brand-logo-frame {
        height: 58px;
    }
    .site-header .header-logo-img {
        height: 78px;
    }
    .site-header .brand-cn {
        width: 128px;
        font-size: 0.7rem;
        letter-spacing: 0.21em;
    }
    .site-header .main-nav > ul {
        gap: 10px;
    }
    .site-header .nav-label {
        font-size: 0.82rem;
        letter-spacing: 0.035em;
    }
    .site-header .nav-sub {
        font-size: 0.56rem;
        letter-spacing: 0.1em;
    }
}

@media (max-width: 1220px) {
    .site-header { padding: 10px 18px; }
    .site-header .header-inner { gap: 22px; }
    .site-header .brand-logo-frame { height: 62px; }
    .site-header .header-logo-img { height: 82px; }
    .site-header .brand-cn { font-size: 0.76rem; }
    .site-header .main-nav > ul { gap: 16px; }
    .site-header .nav-label { font-size: 0.92rem; letter-spacing: 0.05em; }
    .site-header .nav-sub { font-size: 0.62rem; letter-spacing: 0.12em; }
}

@media (max-width: 980px) {
    .site-header {
        padding: 14px 18px;
    }
    .site-header .header-inner {
        flex-direction: column;
        gap: 12px;
    }
    .site-header .brand-logo-frame {
        height: 60px;
    }
    .site-header .header-logo-img {
        height: 80px;
    }
    .site-header .brand-cn {
        font-size: 0.74rem;
    }
    .site-header .main-nav > ul {
        justify-content: center;
        gap: 12px 18px;
        flex-wrap: wrap;
    }
    .site-header .nav-link {
        min-height: 48px;
        padding-top: 6px;
    }
    .site-header .nav-label {
        font-size: 0.9rem;
        letter-spacing: 0.05em;
    }
    .site-header .nav-sub {
        font-size: 0.6rem;
    }
    .site-header .subnav {
        display: none;
    }
}

@media (max-width: 620px) {
    .site-header .brand-logo-frame { height: 51px; }
    .site-header .header-logo-img { height: 68px; }
    .site-header .brand-cn { gap: 6px; width: 112px; font-size: 0.66rem; letter-spacing: 0.22em; }
    .site-header .brand-cn::before, .site-header .brand-cn::after { min-width: 10px; }
    .site-header .main-nav > ul { gap: 10px 14px; }
    .site-header .nav-label { font-size: 0.82rem; }
}