/* ---------- 页眉 ---------- */
:root {
    --header-h: 72px;
    --header-bg: rgba(5, 8, 12, 0.62);
    --glass-border: rgba(255, 255, 255, 0.04);
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 0 28px;
    background: var(--header-bg);
    backdrop-filter: blur(6px) saturate(120%);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
    pointer-events: auto;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
    outline: none;
}

.header-left:focus {
    box-shadow: 0 0 0 4px rgba(111, 180, 255, 0.06);
    border-radius: 8px;
}

.logo {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: transform .18s ease, box-shadow .18s ease;
    box-shadow: 0 2px 10px rgba(15, 20, 25, 0.25), inset 0 -2px 6px rgba(0, 0, 0, 0.25);
}

.header-left:hover .logo,
.header-left:focus .logo {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 18px rgba(15, 20, 25, 0.35);
}

.company-meta {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.company-name {
    font-family: "Oswald", system-ui, sans-serif;
    font-weight: 700;
    letter-spacing: 0.12em;
    font-size: 0.95rem;
    color: #fff;
}

.company-sub {
    font-size: 19px;
    color: var(--muted);
    margin-top: 2px;
    transform: translateY(1px);
}

.header-right {
    display: flex;
    gap: 18px;
    align-items: center;
    color: var(--muted);
    font-family: "Roboto Mono", monospace;
    font-size: 13px;
}

.info-group {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    min-width: 96px;
}

.coord-label {
    font-size: 10px;
    color: #8e9aa6;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.coord-box {
    background: rgba(255, 255, 255, 0.02);
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.03);
    min-width: 84px;
    text-align: right;
}

.coord-row {
    line-height: 1;
    font-variant-numeric: tabular-nums;
    color: #dfe8ef;
    font-size: 13px;
}

.clock-box {
    background: linear-gradient(90deg, rgba(111, 180, 255, 0.08), rgba(77, 168, 255, 0.06));
    padding: 6px 10px;
    border-radius: 8px;
    border: 1px solid rgba(111, 180, 255, 0.12);
    color: #eaf6ff;
    font-variant-numeric: tabular-nums;
    font-weight: 600;
}

/* 响应式：页眉 */
@media (max-width: 880px) {
    .site-header {
        padding: 0 14px;
    }

    .company-name {
        font-size: .88rem;
    }

    .header-right {
        gap: 10px;
        font-size: 12px;
    }

    .info-group {
        min-width: 72px;
    }
}

@media (max-width: 480px) {
    .info-group {
        display: none;
    }
}