/* LOGO 底边对齐搜索区顶边 = 顶部导航高度 + 间距 */
:root {
    --nab-topbar-h: 56px;
    --nab-topbar-gap: 16px;
    --nab-logo-h: calc(var(--nab-topbar-h) + var(--nab-topbar-gap));
    /* 与搜索标题同款上下金属金 */
    --nab-gold-gradient: linear-gradient(180deg, #f7e5a3 0%, #e8c96a 42%, #c19549 100%);
    --nab-gold-bright: #f7e5a3;
    --nab-gold-mid: #e8c96a;
    --nab-gold-deep: #c19549;
}

/* LOGO：宽度铺满侧栏，高度对齐搜索区顶部外边框 */
.header .logo {
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: var(--nab-logo-h) !important;
    box-sizing: border-box;
    overflow: hidden;
}

.header .logo a {
    display: block;
    width: 100%;
    height: 100%;
    line-height: 0;
}

.header .logo img {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    max-height: none !important;
    object-fit: contain;
    object-position: center;
}

/* 深色模式只显示一张 LOGO，避免叠两张 */
.header .logo img.-light,
html.darking .header .logo > a > img:not(.-light) {
    display: none !important;
}

html.darking .header .logo img.-light {
    display: block !important;
    height: 100% !important;
}

/* 右侧顶部导航 */
@media (min-width: 1227px) {
    .tb-topper {
        height: var(--nab-topbar-h) !important;
        padding: 0 24px !important;
        margin-bottom: var(--nab-topbar-gap) !important;
        box-sizing: border-box;
    }

    .tb-topper .-slogan {
        font-size: 15px !important;
        line-height: var(--nab-topbar-h) !important;
        height: var(--nab-topbar-h);
        max-width: 420px;
    }

    .tb-topper .tb-menu3 li {
        line-height: var(--nab-topbar-h) !important;
        height: var(--nab-topbar-h);
        margin-left: 20px;
    }

    .tb-topper .tb-menu3 li > a {
        font-size: 15px !important;
    }

    .tb-topper .collect-tip {
        font-size: 15px !important;
        line-height: var(--nab-topbar-h) !important;
        height: var(--nab-topbar-h);
    }

    .tb-topper .tb-sign-in {
        line-height: var(--nab-topbar-h) !important;
        height: var(--nab-topbar-h);
    }

    .tb-topper .tb-sign-out {
        width: 32px;
        height: 32px !important;
        margin-top: calc((var(--nab-topbar-h) - 32px) / 2) !important;
        margin-bottom: calc((var(--nab-topbar-h) - 32px) / 2) !important;
        line-height: 32px !important;
    }

    .tb-topper .tb-langs,
    .tb-topper .top-search {
        line-height: var(--nab-topbar-h) !important;
        height: var(--nab-topbar-h);
    }

    /* 首页顶部广告不占高度，保证 LOGO 底边与搜索顶边对齐 */
    body.home .tb-container > .tb-ads,
    body.blog .tb-container > .tb-ads,
    body.home .tb-main-wraper > .tb-ads:first-child,
    body.blog .tb-main-wraper > .tb-ads:first-child {
        margin-top: 0 !important;
        margin-bottom: 0 !important;
    }
}

/* 左侧主导航 */
.header .tb-nav .depth-0 > a {
    height: 44px !important;
    line-height: 44px !important;
    font-size: 16px !important;
}

.header .tb-nav .depth-1 > a,
.header .tb-nav .depth-2 > a,
.header .tb-nav .depth-3 > a {
    font-size: 15px !important;
}

.header .tb-nav .m-a-0 {
    height: 44px !important;
    line-height: 44px !important;
    font-size: 15px !important;
}

/* 左侧菜单：悬浮打字机金色文字 */
.header .tb-nav li > a {
    overflow: hidden;
}

.header .tb-nav li > a .nab-nav-text {
    display: inline-block;
    position: relative;
    vertical-align: top;
    white-space: nowrap;
    transition: color 0.2s ease, text-shadow 0.2s ease;
}

.header .tb-nav li > a.nab-nav-hover {
    background: rgba(193, 149, 73, 0.1) !important;
}

.header .tb-nav li > a.nab-nav-hover .nab-nav-text,
.header .tb-nav li > a .nab-nav-text.is-typing,
.header .tb-nav li > a .nab-nav-text.is-done {
    background: var(--nab-gold-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    -webkit-text-fill-color: transparent;
    animation: none;
    text-shadow: none;
    filter: none;
}

.header .tb-nav li > a .nab-nav-text.is-typing::after {
    content: '';
    display: inline-block;
    width: 2px;
    height: 0.9em;
    margin-left: 2px;
    vertical-align: -0.1em;
    background: var(--nab-gold-gradient);
    -webkit-text-fill-color: initial;
    color: var(--nab-gold-mid);
    box-shadow: 0 0 4px rgba(193, 149, 73, 0.5);
    animation: nab-caret-blink 0.7s steps(1) infinite;
}

@keyframes nab-gold-shine {
    0% {
        background-position: 100% 50%;
    }
    100% {
        background-position: -100% 50%;
    }
}

@keyframes nab-caret-blink {
    0%,
    50% {
        opacity: 1;
    }
    51%,
    100% {
        opacity: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .header .tb-nav li > a .nab-nav-text.is-typing::after {
        display: none;
    }

    .header .tb-nav li > a.nab-nav-hover .nab-nav-text,
    .header .tb-nav li > a .nab-nav-text.is-typing,
    .header .tb-nav li > a .nab-nav-text.is-done {
        animation: none;
        background: var(--nab-gold-gradient);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent !important;
        -webkit-text-fill-color: transparent;
    }
}

@media (max-width: 1226px) {
    .header .logo {
        height: auto !important;
    }

    .header .logo img {
        height: auto !important;
    }

    .tb-topper .logo img {
        width: auto !important;
        height: 36px !important;
        max-height: 36px !important;
    }

    .tb-topper .-slogan {
        font-size: 15px !important;
        line-height: 36px !important;
        max-width: 420px;
    }

    .tb-topper .tb-menu3 li {
        line-height: 36px !important;
        margin-left: 20px;
    }

    .tb-topper .tb-menu3 li > a {
        font-size: 15px !important;
    }

    .tb-topper .collect-tip {
        font-size: 15px !important;
        line-height: 36px !important;
    }
}

@media (max-width: 768px) {
    .header .tb-nav .depth-0 > a {
        font-size: 15px !important;
    }
}

/* 后台标语 / 搜索标题：上下金属金 */
.tb-topper .-slogan,
.home-hero-search .s-title {
    background: var(--nab-gold-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent !important;
    -webkit-text-fill-color: transparent;
    animation: none;
    filter: none;
}

.home-hero-search .s-title {
    font-weight: 700;
}

@media (prefers-reduced-motion: reduce) {
    .tb-topper .-slogan,
    .home-hero-search .s-title {
        animation: none;
        background: var(--nab-gold-gradient);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent !important;
        -webkit-text-fill-color: transparent;
    }
}

/* 左侧菜单滚动条：同款金色 */
.header .tb-nav {
    scrollbar-width: thin;
    scrollbar-color: var(--nab-gold-mid) transparent;
}

.header .tb-nav::-webkit-scrollbar {
    width: 4px;
}

.header .tb-nav::-webkit-scrollbar-track {
    background: transparent;
}

.header .tb-nav::-webkit-scrollbar-thumb {
    border-radius: 4px;
    background: var(--nab-gold-gradient) !important;
}

.header .tb-nav::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #fff0b8 0%, #e8c96a 45%, #b38728 100%) !important;
}

.hd-bgc-01 .tb-nav::-webkit-scrollbar-thumb,
.hd-bgc-02 .tb-nav::-webkit-scrollbar-thumb,
.hd-bgc-03 .tb-nav::-webkit-scrollbar-thumb,
.darking .header .tb-nav::-webkit-scrollbar-thumb {
    background: var(--nab-gold-gradient) !important;
}