/* =====================================================================
   网址导航视觉增强（左侧菜单 / 搜索区 / 首页卡片 / 方形 Logo）
   与 style.css 并存，后加载覆盖部分规则
   ===================================================================== */

/* --- Element 风格：左侧菜单 + 主区 --- */
.site-nav-layout {
    display: flex;
    min-height: 100vh;
    width: 100%;
    background: #f0f2f5;
}

.site-nav-sider {
    width: 220px;
    flex-shrink: 0;
    background: #304156;
    color: #bfcbd9;
    display: flex;
    flex-direction: column;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.08);
    z-index: 1001;
    transition: transform 0.25s ease, width 0.22s ease;
}

.site-nav-sider__head {
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 0 12px 0 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(0, 0, 0, 0.12);
}

.site-nav-sider__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex: 1;
    color: #fff !important;
    text-decoration: none !important;
    font-weight: 600;
    font-size: 16px;
}

.site-nav-mini-toggle {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.06);
    color: #bfcbd9;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.site-nav-mini-toggle:hover {
    background: rgba(64, 158, 255, 0.2);
    border-color: rgba(64, 158, 255, 0.45);
    color: #fff;
}

@media (min-width: 992px) {
    .site-nav-mini-toggle {
        display: inline-flex;
    }
}

/* 取消 hover 时自动展开菜单（避免点击冲突和移动端体验不佳） */
.site-nav-submenu:hover > .site-nav-menu--sub {
    /* 不再强制 hover 展开，改为 js 点击展开 */
}

/* --- 左侧边栏下拉展开交互 --- */
.site-nav-submenu > .site-nav-menu--sub {
    display: none; /* 默认隐藏子菜单 */
    padding-left: 20px;
    background: rgba(0, 0, 0, 0.05);
}

.site-nav-submenu.is-open > .site-nav-menu--sub {
    display: block; /* 展开时显示子菜单 */
    animation: slideDown 0.3s ease-out forwards;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.site-nav-submenu__arrow {
    margin-left: auto;
    transition: transform 0.3s ease;
}

.site-nav-submenu.is-open > .site-nav-submenu__title .site-nav-submenu__arrow {
    transform: rotate(180deg);
}
.site-nav-layout--mini .site-nav-sider {
    width: 64px;
}

.site-nav-layout--mini .site-nav-sider__head {
    padding: 0 8px;
    justify-content: center;
    height: 56px;
}

.site-nav-layout--mini .site-nav-sider__logo {
    flex: 0;
    justify-content: center;
}

.site-nav-layout--mini .site-nav-menu-label,
.site-nav-layout--mini .site-nav-sider__logo-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.site-nav-layout--mini .site-nav-menu-item > a,
.site-nav-layout--mini .site-nav-submenu__title {
    justify-content: center;
    padding-left: 10px;
    padding-right: 10px;
}

.site-nav-layout--mini .site-nav-submenu__arrow {
    display: none;
}

.site-nav-layout--mini .site-nav-sider__apply {
    flex-direction: column;
    padding: 10px 8px;
    gap: 0;
}

.site-nav-layout--mini .site-nav-submenu {
    position: relative;
}

.site-nav-layout--mini .site-nav-submenu > .site-nav-menu--sub.sub-menu {
    position: absolute;
    left: calc(100% + 2px);
    top: 0;
    min-width: 168px;
    margin: 0;
    padding: 6px 0;
    border-radius: 6px;
    background: #304156;
    box-shadow: 4px 4px 16px rgba(0, 0, 0, 0.22);
    z-index: 1100;
}

.site-nav-layout--mini .site-nav-menu--sub > li > a {
    padding: 10px 16px !important;
}

.site-nav-sider__logo-icon {
    width: 34px;
    height: 34px;
    line-height: 34px;
    text-align: center;
    border-radius: 8px;
    background: linear-gradient(135deg, #409eff, #6366f1);
    font-size: 16px;
}

.site-nav-sider__nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 8px 0 16px;
}

.site-nav-menu--root.nav {
    list-style: none;
    margin: 0;
    padding: 0;
    border: none;
}

.site-nav-menu--root.nav > li {
    float: none !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
}

.site-nav-menu-item > a,
.site-nav-submenu__title {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    color: #bfcbd9 !important;
    text-decoration: none !important;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    border-left: 3px solid transparent;
}

.site-nav-menu-item > a:hover,
.site-nav-submenu__title:hover {
    background: rgba(255, 255, 255, 0.06) !important;
    color: #fff !important;
}

.site-nav-menu--root > li.active > a,
.site-nav-menu--root > li.active > .site-nav-submenu__title {
    background: rgba(64, 158, 255, 0.15) !important;
    color: #409eff !important;
    border-left-color: #409eff;
}

.site-nav-menu-ico {
    width: 18px;
    text-align: center;
    flex-shrink: 0;
    opacity: 0.95;
}

.site-nav-submenu__title {
    user-select: none;
    position: relative;
}

.site-nav-submenu__arrow {
    margin-left: auto;
    font-size: 12px;
    opacity: 0.7;
    transition: transform 0.2s;
}

.site-nav-submenu.is-open .site-nav-submenu__arrow {
    transform: rotate(180deg);
}

.site-nav-menu--sub.sub-menu {
    display: none;
    list-style: none;
    margin: 0;
    padding: 4px 0 8px;
    background: rgba(0, 0, 0, 0.15);
    border: none !important;
    box-shadow: none !important;
}

.site-nav-submenu.is-open > .site-nav-menu--sub.sub-menu {
    display: block;
}

.site-nav-menu--sub > li {
    float: none !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
}

.site-nav-menu--sub > li > a {
    display: block;
    padding: 10px 16px 10px 48px !important;
    color: #bfcbd9 !important;
    font-size: 13px;
    text-decoration: none !important;
    border-left: 3px solid transparent;
}

.site-nav-menu--sub > li > a:hover {
    background: rgba(255, 255, 255, 0.06) !important;
    color: #fff !important;
}

.site-nav-menu--sub > li.active > a {
    color: #409eff !important;
    background: rgba(64, 158, 255, 0.12) !important;
    border-left-color: #409eff;
}

.site-nav-sider__foot {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px 16px 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.site-nav-sider__foot .site-nav-mini-toggle {
    width: 100%;
    box-sizing: border-box;
}

.site-nav-layout--mini .site-nav-sider__foot {
    padding: 10px 8px 12px;
}

.site-nav-sider__apply {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 8px;
    background: linear-gradient(135deg, #409eff, #6366f1);
    color: #fff !important;
    text-decoration: none !important;
    font-size: 14px;
    font-weight: 500;
}

.site-nav-sider__apply:hover {
    filter: brightness(1.06);
    color: #fff !important;
}

.site-nav-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    background: #f0f2f5;
}

.site-nav-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 52px;
    padding: 8px 16px;
    background: #fff;
    border-bottom: 1px solid #e8eaed;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-nav-topbar__hint {
    flex: 1;
    min-width: 0;
    font-size: 15px;
    font-weight: 600;
    color: #303133;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 576px) {
    .site-nav-topbar__hint {
        font-size: 13px;
    }
}

/* iframe 外壳：右侧内容区不整页刷新 */
.site-nav-frame-wrap {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    background: #f0f2f5;
}

.site-nav-frame {
    flex: 1;
    width: 100%;
    min-height: 400px;
    border: 0;
    display: block;
    background: #f0f2f5;
}

.site-nav-body--shell {
    margin: 0;
    overflow: hidden;
    height: 100vh;
}

.site-nav-body--shell .site-nav-layout {
    min-height: 100vh;
    height: 100vh;
}

.site-nav-body--shell .site-nav-main {
    min-height: 0;
    height: 100%;
}

.site-nav-body--embed {
    margin: 0;
    background: #f0f2f5;
}

.site-nav-sider-toggle {
    width: 40px;
    height: 36px;
    border: 1px solid #dcdfe6;
    border-radius: 8px;
    background: #fff;
    color: #606266;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s, color 0.2s;
}

.site-nav-sider-toggle:hover {
    border-color: #409eff;
    color: #409eff;
}

.site-nav-topbar__search.search {
    flex: 1;
    max-width: 420px;
    margin: 0;
    position: relative;
}

@media (min-width: 992px) {
    .site-nav-sider-toggle {
        display: none;
    }
}

@media (max-width: 991px) {
    .site-nav-sider {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
    }

    .site-nav-layout--sider-open .site-nav-sider {
        transform: translateX(0);
    }
}

/* --- 旧顶栏（已无 DOM，保留无害） --- */
/* --- 头部 --- */
.site-nav-header .h-fix,
.site-nav-header__fix {
    background: linear-gradient(180deg, #ffffff 0%, #f8f9fc 100%);
    border-bottom: 1px solid rgba(107, 115, 134, 0.12);
    box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
}

.site-nav-header__inner {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 12px;
    padding-top: 10px;
    padding-bottom: 10px;
}

.site-nav-header__brand {
    margin: 0;
    padding: 0;
    flex-shrink: 0;
}

.site-nav-header__brand-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none !important;
    color: #3d4556 !important;
}

.site-nav-header__brand-icon {
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    border-radius: 12px;
    background: linear-gradient(135deg, #5b7cfa 0%, #7c5cf5 100%);
    color: #fff !important;
    font-size: 18px;
    box-shadow: 0 6px 16px rgba(91, 124, 250, 0.35);
}

.site-nav-header .site-nav-logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #2c3347 !important;
}

.site-nav-header .nav-bar .nav > li > a {
    border-radius: 8px;
    padding: 8px 12px;
    transition: color 0.2s, background 0.2s;
}

.site-nav-header .nav-bar .nav > li.active > a,
.site-nav-header .nav-bar .nav > li > a:hover {
    background: rgba(91, 124, 250, 0.1);
    color: #4a67f5 !important;
}

.site-nav-header__apply {
    border-radius: 999px;
    padding: 8px 16px !important;
    background: linear-gradient(135deg, #5b7cfa, #8b5cf6) !important;
    color: #fff !important;
    border: none !important;
    box-shadow: 0 4px 14px rgba(91, 124, 250, 0.35);
}

.site-nav-header__apply:hover {
    filter: brightness(1.05);
    color: #fff !important;
}

.site-nav-header .search .s-btn {
    border-radius: 10px;
    transition: background 0.2s, color 0.2s;
}

/* --- 搜索横幅（首页 iframe / part_home）---
   自定义覆盖示例：
   #banner-bear.site-nav-hero { --site-nav-hero-image: url('/blog/siteNav/img/hero.jpg'); }
*/
.site-nav-hero {
    position: relative;
    color: #fff;
    text-align: center;
    border-radius: 0;
    overflow: hidden;
}

.site-nav-hero#banner-bear {
    --site-nav-hero-image: none;
    --site-nav-hero-accent-rgb: 99, 102, 241;
    isolation: isolate;
    height: auto !important;
    min-height: 268px;
    padding: 44px 20px 36px !important;
    margin-bottom: 28px;
    border-radius: 0 0 22px 22px;
    background: transparent !important;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.22);
}

.site-nav-hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.site-nav-hero__bg-photo {
    position: absolute;
    inset: -8px;
    background-image: var(--site-nav-hero-image);
    background-size: cover;
    background-position: center;
    transform: scale(1.04);
    opacity: 0.38;
    filter: saturate(1.08);
    transition: opacity 0.45s ease, transform 0.6s ease;
}

.site-nav-hero#banner-bear:hover .site-nav-hero__bg-photo {
    opacity: 0.48;
    transform: scale(1.06);
}

.site-nav-hero__bg-shine {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 100% 85% at 50% -30%, rgba(var(--site-nav-hero-accent-rgb), 0.45), transparent 58%),
        radial-gradient(ellipse 70% 55% at 100% 20%, rgba(56, 189, 248, 0.18), transparent 50%),
        radial-gradient(ellipse 60% 50% at 0% 80%, rgba(167, 139, 250, 0.2), transparent 55%),
        linear-gradient(155deg, #0f172a 0%, #1e293b 38%, #172554 72%, #0f172a 100%);
    background-size: 100% 100%, 100% 100%, 100% 100%, 200% 200%;
    animation: site-nav-hero-gradient 14s ease-in-out infinite alternate;
}

.site-nav-hero__bg-grid {
    position: absolute;
    inset: 0;
    opacity: 0.22;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 85% 75% at 50% 35%, #000 20%, transparent 72%);
}

@keyframes site-nav-hero-gradient {
    0% {
        background-position: 0% 0%, 0% 0%, 0% 0%, 0% 40%;
    }
    100% {
        background-position: 0% 0%, 0% 0%, 0% 0%, 100% 60%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-nav-hero__bg-shine {
        animation: none;
    }

    .site-nav-hero#banner-bear:hover .site-nav-hero__bg-photo {
        transform: scale(1.04);
    }
}

.site-nav-hero__content {
    position: relative;
    z-index: 2;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 4px;
}

.site-nav-hero#banner-bear .site-nav-hero__tagline.typing {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    transform: none !important;
    width: 100%;
    max-width: 36em;
    margin: 0 auto 22px;
    padding: 0 8px;
    font-size: clamp(16px, 2.4vw, 21px);
    font-weight: 600;
    line-height: 1.55;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.94) !important;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.site-nav-hero .primary-menus.site-nav-hero__search-wrap,
.site-nav-hero#banner-bear .primary-menus {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    transform: none !important;
    width: 100% !important;
    max-width: 700px;
    margin: 0 auto;
    opacity: 1;
    text-align: left;
    background: rgba(15, 23, 42, 0.42);
    border-radius: 18px;
    padding: 14px 16px 18px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow:
        0 4px 24px rgba(0, 0, 0, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.site-nav-hero#banner-bear .primary-menus:hover {
    border-color: rgba(255, 255, 255, 0.22);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.site-nav-hero__tabs.selects {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 8px;
    margin: 0 0 12px !important;
    padding: 0 !important;
    list-style: none !important;
}

.site-nav-hero#banner-bear .selects > li,
.site-nav-hero .selects.site-nav-hero__tabs > li {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    margin: 0 !important;
    padding: 7px 14px !important;
    height: auto !important;
    min-height: 36px;
    line-height: 1.25 !important;
    font-size: 13px !important;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.88) !important;
    border-radius: 999px !important;
    cursor: pointer !important;
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.06);
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

/* 覆盖旧版 style.css 把首个 tab 当成标题的样式 */
.site-nav-hero#banner-bear .selects > li:first-child,
.site-nav-hero .selects.site-nav-hero__tabs > li:first-child {
    cursor: pointer !important;
    color: rgba(255, 255, 255, 0.88) !important;
}

.site-nav-hero#banner-bear .selects > li:first-child:hover,
.site-nav-hero .selects.site-nav-hero__tabs > li:first-child:hover {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.12) !important;
    opacity: 1 !important;
}

.site-nav-hero#banner-bear .selects > li:hover,
.site-nav-hero .selects.site-nav-hero__tabs > li:hover {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.12) !important;
    border-color: rgba(255, 255, 255, 0.12);
    opacity: 1 !important;
    transform: translateY(-1px);
}

.site-nav-hero#banner-bear .selects > li.current,
.site-nav-hero .selects.site-nav-hero__tabs > li.current {
    background: #fff !important;
    color: #1e293b !important;
    border-color: rgba(255, 255, 255, 0.35) !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.site-nav-hero__panel.cont {
    position: relative;
    top: 0 !important;
}

.site-nav-hero#banner-bear .left-cont form.search.site-nav-hero__form,
.site-nav-hero .left-cont form.search {
    display: flex !important;
    align-items: stretch;
    width: 100% !important;
    gap: 0;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 10px 36px rgba(0, 0, 0, 0.2);
    transition: box-shadow 0.25s ease, transform 0.2s ease;
}

/* 必须压过上一段的 display:flex !important，否则 Tab 切换时所有引擎表单会同时堆叠显示 */
.site-nav-hero#banner-bear .left-cont form.search.hidden,
.site-nav-hero .left-cont form.search.hidden {
    display: none !important;
}

.site-nav-hero#banner-bear .left-cont form.search:focus-within {
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.25),
        0 0 0 3px rgba(var(--site-nav-hero-accent-rgb), 0.35);
    transform: translateY(-1px);
}

.site-nav-hero .left-cont form.search input.s.site-nav-hero__input,
.site-nav-hero .left-cont form.search input.s {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    width: auto !important;
    position: relative !important;
    right: auto !important;
    height: 50px !important;
    margin: 0 !important;
    padding: 12px 18px !important;
    border-radius: 14px 0 0 14px !important;
    border: none !important;
    font-size: 15px !important;
    color: #1e293b !important;
    background: rgba(255, 255, 255, 0.97) !important;
    box-sizing: border-box !important;
}

.site-nav-hero .left-cont form.search input.s::placeholder {
    color: #94a3b8;
}

.site-nav-hero .left-cont form.search .btn.site-nav-hero__submit,
.site-nav-hero .left-cont form.search .btn {
    position: relative !important;
    top: auto !important;
    right: auto !important;
    flex: 0 0 auto !important;
    width: auto !important;
    min-width: 108px !important;
    height: 50px !important;
    margin: 0 !important;
    padding: 0 22px !important;
    line-height: 50px !important;
    border-radius: 0 14px 14px 0 !important;
    border: none !important;
    background: linear-gradient(135deg, #2563eb, #6366f1) !important;
    font-weight: 600 !important;
    font-size: 15px !important;
    cursor: pointer;
    box-shadow: none !important;
    transition: filter 0.2s ease, transform 0.15s ease;
}

.site-nav-hero .left-cont form.search .btn:hover {
    filter: brightness(1.06);
}

.site-nav-hero .left-cont form.search .btn:active {
    transform: scale(0.98);
}

.site-nav-hero__extras:empty {
    display: none;
}

.site-nav-hero__extras:not(:empty) {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    align-items: center;
    margin-top: 16px;
}

.site-nav-hero .submit .a {
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.15) !important;
    color: #fff !important;
    padding: 8px 18px !important;
    border: 1px solid rgba(255, 255, 255, 0.25) !important;
}

.site-nav-hero .submit .a:hover {
    background: rgba(255, 255, 255, 0.28) !important;
    color: #fff !important;
}

/* --- 首页内容区 --- */
.site-nav-home-wrap {
    padding-bottom: 40px;
}

.site-nav-home-grid.row-position {
    margin-left: -10px;
    margin-right: -10px;
}

.site-nav-block {
    padding-left: 10px;
    padding-right: 10px;
    margin-bottom: 20px;
}

.site-nav-card.part {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(107, 115, 134, 0.12);
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.07);
    background: #fff;
    transition: box-shadow 0.25s, transform 0.25s;
}

.site-nav-card:hover {
    box-shadow: 0 14px 40px rgba(15, 23, 42, 0.11);
    transform: translateY(-2px);
}

.site-nav-card__head.part_top.topt {
    margin: 0 !important;
    padding: 12px 14px !important;
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.site-nav-card__title {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 15px;
}

.site-nav-card__title .fa-star-o {
    opacity: 0.45;
    font-size: 13px;
}

.site-nav-card__more {
    font-size: 13px;
    font-weight: 600;
    color: #5b7cfa !important;
    text-decoration: none !important;
}

.site-nav-card__more:hover {
    text-decoration: underline !important;
}

.site-nav-card__body.topitems {
    padding: 12px 10px 14px !important;
}

.site-nav-tile-grid.rowtop {
    margin-left: -6px;
    margin-right: -6px;
}

.site-nav-tile-col {
    padding-left: 6px !important;
    padding-right: 6px !important;
    margin-bottom: 10px;
}

.site-nav-tile-wrap .item {
    margin: 0 !important;
    padding: 0 !important;
}

/* 单格链接 */
.site-nav-tile {
    display: flex !important;
    align-items: center;
    gap: 10px;
    padding: 10px 10px !important;
    border-radius: 12px;
    background: #f8fafc !important;
    border: 1px solid rgba(107, 115, 134, 0.1) !important;
    text-decoration: none !important;
    transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
    min-height: 52px;
    box-sizing: border-box;
}

.site-nav-tile:hover {
    background: #fff !important;
    border-color: rgba(91, 124, 250, 0.35) !important;
    box-shadow: 0 6px 18px rgba(91, 124, 250, 0.12);
}

.site-nav-tile h3 {
    display: none !important;
}

.site-nav-tile__text {
    flex: 1;
    min-width: 0;
    text-align: left;
}

.site-nav-tile__name {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #374151 !important;
    line-height: 1.35;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* --- 方形 Logo --- */
.site-nav-logo {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
    background: #e5e7eb;
}

.site-nav-logo--sm {
    width: 36px;
    height: 36px;
    border-radius: 10px;
}

.site-nav-logo--md {
    width: 44px;
    height: 44px;
    border-radius: 12px;
}

.site-nav-logo--lg {
    width: 56px;
    height: 56px;
    border-radius: 14px;
}

.site-nav-logo__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.site-nav-logo__letter {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
    color: #fff !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    /* 背景由 siteNavEnhance.js 根据 data-seed 写入 */
    background: #94a3b8;
}

.site-nav-logo--md .site-nav-logo__letter {
    font-size: 18px;
}

.site-nav-logo--lg .site-nav-logo__letter {
    font-size: 22px;
}

/* --- 列表页卡片（与首页协调） --- */
.site-nav-list-card .inner_item {
    border-radius: 14px !important;
    overflow: hidden;
    border: 1px solid rgba(107, 115, 134, 0.1) !important;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.06) !important;
    transition: box-shadow 0.2s, transform 0.2s;
}

.site-nav-list-card .inner_item:hover {
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.1) !important;
    transform: translateY(-2px);
}

.site-nav-list-card .inner_item > .a {
    display: flex !important;
    flex-direction: column;
    align-items: stretch;
    padding: 14px 12px 10px !important;
}

.site-nav-list-card .site-nav-logo {
    align-self: flex-start;
    margin-bottom: 8px;
}

.site-nav-list-card .inner_item h3 {
    text-align: left !important;
    margin: 0 0 6px !important;
    font-size: 15px !important;
}

.site-nav-list-card .inner_item p {
    text-align: left !important;
    font-size: 12px !important;
    color: #6b7280 !important;
    line-height: 1.45;
    min-height: 2.9em;
}

/* --- 详情页大 Logo + 首字 --- */
.site-nav-detail-hero .pic {
    position: relative;
}

.site-nav-detail-hero .pic.fl .site-nav-logo--lg {
    width: 120px;
    height: 120px;
    min-height: 120px;
    border-radius: 20px;
    margin: 0 auto;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.15);
}

.site-nav-detail-hero .site-nav-logo--lg .site-nav-logo__letter {
    font-size: 42px;
}

.site-nav-detail-hero .pic .blur-layer {
    border-radius: 20px;
}

.site-nav-detail-letter-blur {
    background: linear-gradient(135deg, rgba(91, 124, 250, 0.2), rgba(139, 92, 245, 0.18)) !important;
}

.site-nav-detail-letter-wrap {
    position: relative;
    z-index: 1;
    margin: 0 auto;
}

@media screen and (max-width: 1199px) {
    .site-nav-hero#banner-bear {
        min-height: min(300px, 42vh);
        height: auto !important;
    }
}

@media screen and (max-width: 768px) {
    .site-nav-header__inner {
        padding-top: 8px;
        padding-bottom: 8px;
    }

    .site-nav-hero#banner-bear {
        margin-bottom: 20px;
        padding: 32px 14px 26px !important;
        border-radius: 0 0 16px 16px;
    }

    .site-nav-hero__tabs.selects {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 6px;
        margin-bottom: 10px !important;
        scrollbar-width: thin;
    }

    .site-nav-hero__tabs.selects::-webkit-scrollbar {
        height: 4px;
    }

    .site-nav-hero__tabs.selects::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.25);
        border-radius: 4px;
    }

    .site-nav-hero .left-cont form.search input.s.site-nav-hero__input,
    .site-nav-hero .left-cont form.search input.s {
        height: 46px !important;
        font-size: 14px !important;
    }

    .site-nav-hero .left-cont form.search .btn.site-nav-hero__submit,
    .site-nav-hero .left-cont form.search .btn {
        height: 46px !important;
        line-height: 46px !important;
        min-width: 96px !important;
        font-size: 13px !important;
        padding: 0 16px !important;
    }

    /* 旧版 style 在窄屏隐藏 ul 首项，会误伤搜索引擎第一个 Tab */
    .site-nav-hero#banner-bear .selects.site-nav-hero__tabs > li:first-child {
        display: inline-flex !important;
    }

    .site-nav-tile__name {
        font-size: 12px;
    }
}

@media screen and (max-width: 480px) {
    .site-nav-hero#banner-bear .left-cont form.search.site-nav-hero__form,
    .site-nav-hero#banner-bear .left-cont form.search {
        flex-direction: column;
    }

    .site-nav-hero#banner-bear .left-cont form.search input.s {
        border-radius: 12px 12px 0 0 !important;
    }

    .site-nav-hero#banner-bear .left-cont form.search .btn {
        border-radius: 0 0 12px 12px !important;
        width: 100% !important;
    }
}

/* =====================================================================
   首页 / 列表统一卡片 + 列表页堆叠卡片 + 外壳顶栏一言 + 深色主题
   ===================================================================== */

.site-nav-home-wrap {
    width: 100%;
    max-width: 1400px;
    padding: 30px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
    background-color: transparent;
}

.site-nav-hero {
    margin-bottom: 20px;
}

.nav-category-section {
    margin-bottom: 30px;
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    transition: box-shadow 0.3s ease;
}

.nav-category-section:hover {
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
}

.nav-category-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid #f0f2f5;
    display: flex;
    align-items: center;
    color: #304156;
}

.nav-category-title i {
    margin-right: 10px;
    color: #409eff;
    font-size: 20px;
}

.nav-category-title .more-link {
    margin-left: auto;
    font-size: 13px;
    font-weight: normal;
    color: #909399;
    text-decoration: none;
    transition: color 0.3s;
    display: flex;
    align-items: center;
}

.nav-category-title .more-link:hover {
    color: #409eff;
}

.nav-category-title .more-link i {
    font-size: 14px;
    margin-left: 4px;
    margin-right: 0;
    color: inherit;
}

.nav-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.site-nav-link-grid--list {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.nav-link-card {
    display: flex;
    align-items: center;
    padding: 14px;
    border-radius: 10px;
    background: #f8f9fa;
    border: 1px solid #ebeef5;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none !important;
    color: inherit;
    position: relative;
    cursor: pointer;
    overflow: hidden;
}

.nav-link-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(64, 158, 255, 0.12);
    background: #fff;
    border-color: #409eff;
}

.nav-link-logo-wrap {
    margin-right: 12px;
    flex-shrink: 0;
}

.nav-links-grid .site-nav-logo--md,
.site-nav-link-grid--list .site-nav-logo--md {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.nav-links-grid .site-nav-logo--md .site-nav-logo__letter,
.site-nav-link-grid--list .site-nav-logo--md .site-nav-logo__letter {
    font-size: 18px;
}

.nav-link-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.nav-link-title {
    font-size: 15px;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.3s;
}

.nav-link-card:hover .nav-link-title {
    color: #409eff;
}

.nav-link-desc {
    font-size: 12px;
    color: #888;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-link-card-stack {
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #ebeef5;
    background: #fff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.nav-link-card-stack:hover {
    box-shadow: 0 8px 24px rgba(64, 158, 255, 0.12);
    transform: translateY(-2px);
}

.nav-link-card-stack .nav-link-card {
    border: none;
    border-radius: 0;
    box-shadow: none;
    flex: 1;
}

.nav-link-card-stack .nav-link-card:hover {
    transform: none;
    box-shadow: none;
}

.nav-link-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px 10px;
    border-top: 1px solid #f0f2f5;
    font-size: 12px;
    color: #909399;
    background: #fafbfc;
}

.nav-link-card__views i {
    margin-right: 4px;
    opacity: 0.85;
}

.nav-link-card__go {
    color: #606266;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
}

.nav-link-card__go:hover {
    background: rgba(64, 158, 255, 0.12);
    color: #409eff;
}

.sortable-ghost {
    opacity: 0.4;
    background: #f0f2f5;
    border: 2px dashed #409eff;
}

.site-nav-body--home .site-nav-tools {
    position: fixed;
    right: 20px;
    bottom: 80px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.site-nav-tool-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #fff;
    color: #606266;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 18px;
    text-decoration: none !important;
}

.site-nav-tool-btn:hover {
    background: #409eff;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(64, 158, 255, 0.3);
}

/* 外壳顶栏：品牌 + 一言 */
.site-nav-topbar--shell {
    gap: 12px;
}

.site-nav-topbar__shell-mid {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 14px;
}

.site-nav-topbar__brand {
    flex-shrink: 0;
    font-weight: 700;
    font-size: 16px;
    color: #303133;
    letter-spacing: 0.02em;
}

.site-nav-topbar__quote {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: linear-gradient(105deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.08) 100%);
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.site-nav-topbar__quote-ico {
    flex-shrink: 0;
    font-size: 12px;
    color: #667eea;
    opacity: 0.85;
}

.site-nav-topbar__quote-text {
    flex: 1;
    min-width: 0;
    font-size: 13px;
    line-height: 1.45;
    color: #4a5568;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.site-nav-topbar__shell-tools {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.site-nav-icon-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    border: 1px solid #dcdfe6;
    border-radius: 8px;
    background: #fff;
    color: #606266;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.site-nav-icon-btn:hover {
    border-color: #409eff;
    color: #409eff;
    background: rgba(64, 158, 255, 0.06);
}

@media (max-width: 768px) {
    .site-nav-home-wrap {
        padding: 15px;
    }

    .nav-category-section {
        padding: 16px;
    }

    .nav-links-grid {
        grid-template-columns: repeat(auto-fill, minmax(100%, 1fr));
    }

    .site-nav-body--home .site-nav-tools {
        display: none;
    }

    .site-nav-topbar__brand {
        display: none;
    }

    .site-nav-topbar__quote-text {
        font-size: 12px;
    }
}

/* ---------- 深色主题 ---------- */
html.site-nav-theme-dark,
html.site-nav-theme-dark body {
    color-scheme: dark;
}

html.site-nav-theme-dark .site-nav-layout {
    background: #0f1419;
}

html.site-nav-theme-dark .site-nav-main {
    background: #0f1419;
}

html.site-nav-theme-dark .site-nav-frame-wrap {
    background: #0f1419;
}

html.site-nav-theme-dark .site-nav-frame {
    background: #0f1419;
}

html.site-nav-theme-dark .site-nav-topbar,
html.site-nav-theme-dark .site-nav-topbar--shell {
    background: #1a2332;
    border-bottom-color: #2d3a4f;
    box-shadow: none;
}

html.site-nav-theme-dark .site-nav-topbar__hint,
html.site-nav-theme-dark .site-nav-topbar__brand {
    color: #e8eaed;
}

html.site-nav-theme-dark .site-nav-topbar__quote {
    background: linear-gradient(105deg, rgba(102, 126, 234, 0.18) 0%, rgba(118, 75, 162, 0.15) 100%);
    border-color: rgba(129, 140, 248, 0.35);
}

html.site-nav-theme-dark .site-nav-topbar__quote-text {
    color: #cbd5e1;
}

html.site-nav-theme-dark .site-nav-topbar__quote-ico {
    color: #a5b4fc;
}

html.site-nav-theme-dark .site-nav-icon-btn {
    background: #243044;
    border-color: #3d4f66;
    color: #cbd5e1;
}

html.site-nav-theme-dark .site-nav-icon-btn:hover {
    background: rgba(64, 158, 255, 0.2);
    border-color: #409eff;
    color: #93c5fd;
}

html.site-nav-theme-dark .site-nav-sider-toggle {
    background: #243044;
    border-color: #3d4f66;
    color: #cbd5e1;
}

html.site-nav-theme-dark .breadnav,
html.site-nav-theme-dark .breadnav .bread {
    background: transparent;
    color: #94a3b8;
}

html.site-nav-theme-dark .breadnav a {
    color: #93c5fd;
}

html.site-nav-theme-dark .nav-category-section {
    background: #1a2332;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

html.site-nav-theme-dark .nav-category-title {
    color: #e2e8f0;
    border-bottom-color: #2d3a4f;
}

html.site-nav-theme-dark .nav-link-card {
    background: #243044;
    border-color: #334155;
}

html.site-nav-theme-dark .nav-link-card:hover {
    background: #2d3d52;
    border-color: #409eff;
}

html.site-nav-theme-dark .nav-link-title {
    color: #f1f5f9;
}

html.site-nav-theme-dark .nav-link-desc {
    color: #94a3b8;
}

html.site-nav-theme-dark .nav-link-card-stack {
    background: #1a2332;
    border-color: #334155;
}

html.site-nav-theme-dark .nav-link-card__meta {
    background: #151d2a;
    border-top-color: #2d3a4f;
    color: #94a3b8;
}

html.site-nav-theme-dark .site-nav-hero#banner-bear {
    --site-nav-hero-accent-rgb: 129, 140, 248;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

html.site-nav-theme-dark .site-nav-hero__bg-shine {
    background:
        radial-gradient(ellipse 100% 85% at 50% -30%, rgba(99, 102, 241, 0.35), transparent 58%),
        radial-gradient(ellipse 70% 55% at 100% 20%, rgba(56, 189, 248, 0.12), transparent 50%),
        radial-gradient(ellipse 60% 50% at 0% 80%, rgba(167, 139, 250, 0.14), transparent 55%),
        linear-gradient(155deg, #0b1120 0%, #111827 40%, #1e1b4b 72%, #0f172a 100%);
    background-size: 100% 100%, 100% 100%, 100% 100%, 200% 200%;
}

html.site-nav-theme-dark .site-nav-hero#banner-bear .primary-menus {
    background: rgba(15, 23, 42, 0.65);
    border-color: rgba(148, 163, 184, 0.18);
}

html.site-nav-theme-dark .site-nav-hero#banner-bear .left-cont form.search input.s {
    background: rgba(248, 250, 252, 0.98) !important;
    color: #0f172a !important;
}

html.site-nav-theme-dark .site-nav-friend-links {
    background: #151d2a;
    border-top: 1px solid #2d3a4f;
    color: #94a3b8;
}

html.site-nav-theme-dark .footer-copyright {
    background: #0f1419;
    color: #64748b;
}

html.site-nav-theme-dark .part.partbg,
html.site-nav-theme-dark .part.partbgw {
    background: #1a2332 !important;
    color: #e2e8f0;
}

html.site-nav-theme-dark .art-main {
    color: #cbd5e1;
}

html.site-nav-theme-dark .site-nav-body--embed {
    background: #0f1419;
}

/* =====================================================================
   首页（part_home）：仅保留搜索下主内容（空状态 / 分类区块 / 链接卡片）
   ===================================================================== */

.site-nav-home-pro {
    padding-bottom: 32px;
}

.site-nav-home-empty {
    text-align: center;
    padding: 48px 24px 56px;
    background: #fff;
    border-radius: 16px;
    border: 1px dashed #dcdfe6;
    margin-bottom: 24px;
}

.site-nav-home-empty__icon {
    font-size: 48px;
    color: #dcdfe6;
    margin-bottom: 16px;
}

.site-nav-home-empty__title {
    margin: 0 0 10px;
    font-size: 20px;
    color: #606266;
}

.site-nav-home-empty__text {
    margin: 0 auto 24px;
    max-width: 400px;
    font-size: 14px;
    color: #909399;
    line-height: 1.6;
}

.site-nav-home-empty__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.site-nav-home-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 10px;
    border: 1px solid #dcdfe6;
    background: #fff;
    color: #606266;
    text-decoration: none !important;
    transition: all 0.2s;
}

.site-nav-home-btn:hover {
    border-color: #409eff;
    color: #409eff;
}

.site-nav-home-btn--primary {
    background: linear-gradient(135deg, #409eff, #6366f1);
    border-color: transparent;
    color: #fff !important;
}

.site-nav-home-btn--primary:hover {
    filter: brightness(1.05);
    color: #fff !important;
}

.site-nav-home-section {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.site-nav-home-section.is-visible {
    opacity: 1;
    transform: none;
}

.site-nav-home-section__head {
    border-bottom-width: 2px;
    border-image: linear-gradient(90deg, #409eff, transparent) 1;
}

.site-nav-home-section__icon-wrap {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(64, 158, 255, 0.15), rgba(99, 102, 241, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #409eff;
    font-size: 18px;
    margin-right: 4px;
    flex-shrink: 0;
}

.site-nav-home-section__titles {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.site-nav-home-section__name {
    font-size: 18px;
    font-weight: 700;
    color: #304156;
}

.site-nav-home-section__meta {
    font-size: 12px;
    color: #909399;
    font-weight: 500;
}

.site-nav-home-section__more {
    margin-left: auto;
}

.nav-link-card {
    position: relative;
}

.nav-link-card--featured {
    border-color: rgba(245, 158, 11, 0.45);
    background: linear-gradient(135deg, #fffef7 0%, #f8fafc 100%);
}

.nav-link-card__ribbon {
    position: absolute;
    top: 8px;
    right: -28px;
    padding: 2px 32px;
    font-size: 10px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(90deg, #f59e0b, #f97316);
    transform: rotate(38deg);
    transform-origin: center;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.35);
    z-index: 2;
    pointer-events: none;
}

.nav-link-card__ext {
    position: absolute;
    right: 10px;
    bottom: 10px;
    font-size: 12px;
    color: #c0c4cc;
    opacity: 0;
    transition: opacity 0.2s;
}

.nav-link-card:hover .nav-link-card__ext {
    opacity: 1;
    color: #409eff;
}

@media (max-width: 768px) {
    .nav-link-card__ribbon {
        right: -24px;
        font-size: 9px;
    }
}

/* 深色：首页主内容区 */
html.site-nav-theme-dark .site-nav-home-empty {
    background: #1a2332;
    border-color: #334155;
}

html.site-nav-theme-dark .site-nav-home-section__name {
    color: #e2e8f0;
}

html.site-nav-theme-dark .nav-link-card--featured {
    background: linear-gradient(135deg, #2a2318 0%, #243044 100%);
    border-color: rgba(245, 158, 11, 0.3);
}

/* ---------- 顶栏登录 / 注册 ---------- */
.site-nav-hidden {
    display: none !important;
}

.site-nav-topbar__auth {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-right: 8px;
    font-size: 13px;
    color: #606266;
}

.site-nav-topbar__auth-sep {
    opacity: 0.45;
    user-select: none;
}

.site-nav-text-btn {
    background: none;
    border: none;
    padding: 4px 6px;
    cursor: pointer;
    color: #409eff;
    font-size: inherit;
    font-family: inherit;
}

.site-nav-text-btn:hover {
    text-decoration: underline;
}

.site-nav-topbar__auth-name {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: middle;
    margin-right: 4px;
}

.site-nav-auth-overlay {
    position: fixed;
    inset: 0;
    z-index: 10050;
    background: rgba(15, 23, 42, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.site-nav-auth-dialog {
    position: relative;
    width: 100%;
    max-width: 400px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.22);
    padding: 26px 24px 20px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    animation: site-nav-dialog-in 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes site-nav-dialog-in {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

html.site-nav-theme-dark .site-nav-auth-dialog {
    background: #1e293b;
    color: #e2e8f0;
}

.site-nav-auth-close {
    position: absolute;
    right: 12px;
    top: 8px;
    border: none;
    background: none;
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
    color: #94a3b8;
}

.site-nav-auth-title {
    margin: 0 0 16px;
    font-size: 18px;
    font-weight: 600;
}

.site-nav-auth-label {
    display: block;
    margin: 10px 0 4px;
    font-size: 13px;
    color: #64748b;
}

html.site-nav-theme-dark .site-nav-auth-label {
    color: #94a3b8;
}

.site-nav-auth-input {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
}

html.site-nav-theme-dark .site-nav-auth-input {
    background: #0f172a;
    border-color: #334155;
    color: #e2e8f0;
}

.site-nav-auth-row {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

.site-nav-auth-input--code {
    flex: 1;
    min-width: 0;
}

.site-nav-auth-code-btn {
    flex-shrink: 0;
    padding: 0 12px;
    border-radius: 8px;
    border: 1px solid #409eff;
    background: #ecf5ff;
    color: #409eff;
    cursor: pointer;
    font-size: 13px;
    white-space: nowrap;
}

.site-nav-auth-code-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

html.site-nav-theme-dark .site-nav-auth-code-btn {
    background: rgba(64, 158, 255, 0.12);
}

.site-nav-auth-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 13px;
    color: #64748b;
    cursor: pointer;
}

.site-nav-auth-hint {
    margin: 10px 0 0;
    font-size: 12px;
    color: #94a3b8;
}

.site-nav-auth-submit {
    width: 100%;
    margin-top: 16px;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(59, 130, 246, 0.3);
    transition: filter 0.2s, transform 0.15s;
}

.site-nav-auth-submit:hover {
    filter: brightness(1.06);
    transform: translateY(-1px);
}

.site-nav-auth-switch {
    margin: 14px 0 0;
    text-align: center;
    font-size: 13px;
    color: #64748b;
}

.site-nav-auth-msg {
    margin: 12px 0 0;
    font-size: 13px;
    color: #67c23a;
}

.site-nav-auth-msg.site-nav-auth-msg--err {
    color: #f56c6c;
}

/* ---------- 个人中心 ---------- */
.site-nav-user-center-wrap {
    max-width: 980px;
    margin-top: 22px;
    margin-bottom: 40px;
}

.site-nav-uc-title {
    margin: 0 0 8px;
    font-size: 24px;
}

.site-nav-uc-lead {
    color: #6b7280;
    margin-bottom: 14px;
}

.site-nav-uc-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 14px;
}

.site-nav-uc-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(120px, 200px));
    gap: 10px;
    margin-bottom: 12px;
}

.site-nav-uc-stat {
    border: 1px solid #dbe2ea;
    border-radius: 10px;
    background: #fff;
    padding: 10px 12px;
}

.site-nav-uc-stat__label {
    display: block;
    font-size: 12px;
    color: #64748b;
}

.site-nav-uc-stat__value {
    display: block;
    margin-top: 2px;
    font-size: 24px;
    line-height: 1.2;
    color: #1e293b;
}

.site-nav-uc-tab {
    border: 1px solid #d0d7e2;
    background: #f8fafc;
    color: #334155;
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
}

.site-nav-uc-tab.is-active {
    background: #409eff;
    color: #fff;
    border-color: #409eff;
}

.site-nav-uc-panel {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 14px;
}

.site-nav-uc-divider {
    border: none;
    border-top: 1px dashed #dbe2ea;
    margin: 16px 0 12px;
}

.site-nav-uc-field { margin-bottom: 12px; }
.site-nav-uc-field label { display: block; margin-bottom: 4px; color: #64748b; }
.site-nav-uc-input {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #dbe2ea;
    border-radius: 8px;
    padding: 9px 11px;
}
.site-nav-uc-input--ro { background: #f8fafc; color: #64748b; }
.site-nav-uc-req { color: #ef4444; }

.site-nav-uc-btn {
    border: 1px solid #d0d7e2;
    background: #fff;
    color: #334155;
    border-radius: 8px;
    padding: 6px 10px;
    cursor: pointer;
}
.site-nav-uc-btn--primary { background: #409eff; color: #fff; border-color: #409eff; }
.site-nav-uc-btn--ghost { background: #f8fafc; }

.site-nav-uc-tip { margin-left: 8px; color: #10b981; font-size: 13px; }
.site-nav-uc-muted { color: #64748b; font-size: 13px; margin-bottom: 10px; }
.site-nav-uc-empty { color: #94a3b8; padding: 10px 4px; }

.site-nav-uc-card-list { display: grid; gap: 10px; }
.site-nav-uc-card {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}
.site-nav-uc-card__title { font-weight: 600; }
.site-nav-uc-card__desc { font-size: 12px; color: #64748b; margin-top: 2px; }
.site-nav-uc-card__ops { display: flex; gap: 8px; }

.site-nav-uc-search-row { display: flex; gap: 8px; margin-bottom: 8px; }
.site-nav-uc-search-results { margin-bottom: 10px; }
.site-nav-uc-search-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 10px;
    border: 1px dashed #d0d7e2;
    border-radius: 8px;
    margin-bottom: 6px;
}

.site-nav-uc-subh { margin: 12px 0 8px; font-size: 15px; }
.site-nav-uc-pin-grid { display: grid; gap: 8px; }
.site-nav-uc-pin {
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 8px 10px;
    background: #fff;
}
.site-nav-uc-pin__drag { cursor: move; color: #94a3b8; }
.site-nav-uc-pin__title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* =====================================================================
   v2 视觉精修：设计令牌 / 侧栏质感 / Hero 氛围 / 卡片与微交互
   ===================================================================== */

:root {
    --sn-accent: #3b82f6;
    --sn-accent-2: #6366f1;
    --sn-accent-soft: rgba(59, 130, 246, 0.12);
    --sn-sider-bg: #1e293b;
    --sn-sider-bg-deep: #0f172a;
    --sn-page-bg: #eef2f7;
    --sn-card: #ffffff;
    --sn-text: #1e293b;
    --sn-muted: #64748b;
    --sn-radius-lg: 16px;
    --sn-radius-md: 12px;
    --sn-shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --sn-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
    --sn-shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.1);
    --sn-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* 页面氛围 */
.site-nav-layout {
    background:
        radial-gradient(ellipse 80% 50% at 70% -10%, rgba(99, 102, 241, 0.06), transparent 55%),
        radial-gradient(ellipse 60% 40% at 10% 100%, rgba(59, 130, 246, 0.05), transparent 50%),
        var(--sn-page-bg);
}

.site-nav-main,
.site-nav-frame-wrap,
.site-nav-frame,
.site-nav-body--embed {
    background: transparent;
}

.site-nav-body--embed {
    background:
        radial-gradient(ellipse 70% 40% at 50% 0%, rgba(99, 102, 241, 0.05), transparent 60%),
        var(--sn-page-bg);
}

/* ---------- 侧栏质感 ---------- */
.site-nav-sider {
    width: 232px;
    background: linear-gradient(180deg, var(--sn-sider-bg) 0%, var(--sn-sider-bg-deep) 100%);
    box-shadow: 4px 0 24px rgba(15, 23, 42, 0.18);
}

.site-nav-sider__head {
    height: 60px;
    padding: 0 14px 0 18px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    background: rgba(0, 0, 0, 0.18);
}

.site-nav-sider__logo-icon {
    width: 36px;
    height: 36px;
    line-height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 55%, #8b5cf6 100%);
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.45);
    font-size: 15px;
}

.site-nav-sider__logo-text {
    letter-spacing: 0.04em;
}

.site-nav-sider__nav {
    padding: 12px 10px 20px;
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.35) transparent;
}

.site-nav-sider__nav::-webkit-scrollbar {
    width: 4px;
}

.site-nav-sider__nav::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.35);
    border-radius: 4px;
}

.site-nav-menu-item > a,
.site-nav-submenu__title {
    margin: 2px 0;
    padding: 11px 14px;
    border-radius: 10px;
    border-left: none;
    gap: 12px;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: background 0.22s var(--sn-ease), color 0.22s, transform 0.18s var(--sn-ease), box-shadow 0.22s;
}

.site-nav-menu-item > a:hover,
.site-nav-submenu__title:hover {
    background: rgba(255, 255, 255, 0.07) !important;
    transform: translateX(2px);
}

.site-nav-menu--root > li.active > a,
.site-nav-menu--root > li.active > .site-nav-submenu__title {
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.28), rgba(99, 102, 241, 0.12)) !important;
    color: #93c5fd !important;
    box-shadow: inset 3px 0 0 #3b82f6;
    border-left-color: transparent;
}

.site-nav-menu-ico {
    width: 20px;
    font-size: 15px;
    opacity: 0.9;
}

.site-nav-menu--sub.sub-menu {
    margin: 0 0 6px;
    padding: 4px 0 6px 8px;
    border-radius: 0 0 10px 10px;
    background: rgba(0, 0, 0, 0.22);
}

.site-nav-menu--sub > li > a {
    margin: 1px 0;
    padding: 9px 14px 9px 40px !important;
    border-radius: 8px;
    border-left: none;
}

.site-nav-menu--sub > li.active > a {
    background: rgba(59, 130, 246, 0.18) !important;
    color: #93c5fd !important;
    box-shadow: inset 3px 0 0 #3b82f6;
    border-left-color: transparent;
}

.site-nav-sider__foot {
    padding: 14px 14px 18px;
    border-top: 1px solid rgba(148, 163, 184, 0.1);
    background: rgba(0, 0, 0, 0.12);
}

.site-nav-sider__apply {
    padding: 12px 14px;
    border-radius: 12px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
    transition: transform 0.2s var(--sn-ease), box-shadow 0.2s, filter 0.2s;
}

.site-nav-sider__apply:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
    box-shadow: 0 10px 28px rgba(59, 130, 246, 0.42);
}

.site-nav-layout--mini .site-nav-sider {
    width: 68px;
}

.site-nav-layout--mini .site-nav-menu-item > a,
.site-nav-layout--mini .site-nav-submenu__title {
    margin: 4px 6px;
    border-radius: 10px;
}

.site-nav-layout--mini .site-nav-menu--root > li.active > a {
    box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.45);
}

/* ---------- 顶栏 ---------- */
.site-nav-topbar,
.site-nav-topbar--shell {
    min-height: 54px;
    padding: 8px 18px;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset;
}

.site-nav-topbar__quote {
    padding: 7px 16px;
    border-radius: 999px;
    background: linear-gradient(105deg, rgba(59, 130, 246, 0.08) 0%, rgba(99, 102, 241, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.18);
    box-shadow: var(--sn-shadow-sm);
}

.site-nav-topbar__quote-text {
    font-size: 13px;
    color: #475569;
    animation: site-nav-quote-fade 0.45s var(--sn-ease);
}

@keyframes site-nav-quote-fade {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: none; }
}

.site-nav-icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.15s var(--sn-ease), box-shadow 0.2s;
}

.site-nav-icon-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

.site-nav-text-btn {
    padding: 6px 8px;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
}

.site-nav-text-btn:hover {
    background: var(--sn-accent-soft);
    text-decoration: none;
}

/* ---------- Hero 氛围 ---------- */
.site-nav-hero#banner-bear {
    --site-nav-hero-accent-rgb: 59, 130, 246;
    min-height: 300px;
    padding: 48px 24px 42px !important;
    margin-bottom: 8px;
    border-radius: 0 0 28px 28px;
    box-shadow:
        0 24px 56px rgba(15, 23, 42, 0.2),
        0 1px 0 rgba(255, 255, 255, 0.08) inset;
}

.site-nav-hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(2px);
    pointer-events: none;
    opacity: 0.55;
    animation: site-nav-orb-float 12s ease-in-out infinite alternate;
}

.site-nav-hero__orb--a {
    width: 180px;
    height: 180px;
    top: -40px;
    left: 8%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.55), transparent 70%);
}

.site-nav-hero__orb--b {
    width: 220px;
    height: 220px;
    right: 6%;
    bottom: -60px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.45), transparent 70%);
    animation-delay: -4s;
}

.site-nav-hero__orb--c {
    width: 120px;
    height: 120px;
    top: 35%;
    left: 48%;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.35), transparent 70%);
    animation-delay: -7s;
}

@keyframes site-nav-orb-float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(18px, -14px) scale(1.08); }
}

.site-nav-hero__eyebrow {
    margin: 0 auto 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(186, 230, 253, 0.85);
}

.site-nav-hero#banner-bear .site-nav-hero__tagline.typing {
    margin-bottom: 26px;
    font-size: clamp(17px, 2.6vw, 22px);
    font-weight: 650;
    letter-spacing: 0.03em;
    text-shadow: 0 2px 28px rgba(0, 0, 0, 0.4);
}

.site-nav-hero .primary-menus.site-nav-hero__search-wrap,
.site-nav-hero#banner-bear .primary-menus {
    max-width: 720px;
    padding: 16px 18px 18px;
    border-radius: 20px;
    background: rgba(15, 23, 42, 0.38);
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.site-nav-hero__tabs.selects {
    gap: 8px;
    margin-bottom: 14px !important;
}

.site-nav-hero#banner-bear .selects > li,
.site-nav-hero .selects.site-nav-hero__tabs > li {
    padding: 8px 16px !important;
    min-height: 38px;
    font-size: 13px !important;
    letter-spacing: 0.02em;
    background: rgba(255, 255, 255, 0.07);
}

.site-nav-hero#banner-bear .selects > li.current,
.site-nav-hero .selects.site-nav-hero__tabs > li.current {
    background: #fff !important;
    color: #0f172a !important;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.16);
}

.site-nav-hero#banner-bear .left-cont form.search.site-nav-hero__form,
.site-nav-hero .left-cont form.search {
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
}

.site-nav-hero .left-cont form.search input.s.site-nav-hero__input,
.site-nav-hero .left-cont form.search input.s {
    height: 52px !important;
    padding: 12px 20px !important;
    border-radius: 16px 0 0 16px !important;
    font-size: 15px !important;
}

.site-nav-hero .left-cont form.search .btn.site-nav-hero__submit,
.site-nav-hero .left-cont form.search .btn {
    min-width: 118px !important;
    height: 52px !important;
    line-height: 52px !important;
    border-radius: 0 16px 16px 0 !important;
    background: linear-gradient(135deg, #2563eb, #4f46e5) !important;
    letter-spacing: 0.02em;
}

.site-nav-hero__hint {
    margin: 14px auto 0;
    font-size: 12px;
    color: rgba(226, 232, 240, 0.65);
    letter-spacing: 0.02em;
}

.site-nav-hero__hint kbd {
    display: inline-block;
    min-width: 1.4em;
    padding: 1px 7px;
    margin-right: 4px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.1);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 11px;
    color: #fff;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.15);
}

/* ---------- 分类区与卡片 ---------- */
.site-nav-home-wrap {
    padding: 20px 28px 48px;
}

.nav-category-section {
    margin-bottom: 22px;
    padding: 22px 22px 20px;
    border-radius: var(--sn-radius-lg);
    background: var(--sn-card);
    border: 1px solid rgba(148, 163, 184, 0.16);
    box-shadow: var(--sn-shadow-md);
    transition: box-shadow 0.3s var(--sn-ease), transform 0.3s var(--sn-ease), border-color 0.3s;
}

.nav-category-section:hover {
    box-shadow: var(--sn-shadow-lg);
    border-color: rgba(59, 130, 246, 0.2);
}

.nav-category-title {
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid #eef2f7;
}

.site-nav-home-section__head {
    border-bottom: 1px solid #eef2f7;
    border-image: none;
}

.site-nav-home-section__icon-wrap {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.16), rgba(99, 102, 241, 0.12));
    color: var(--sn-accent);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.site-nav-home-section__name {
    font-size: 17px;
    font-weight: 700;
    color: var(--sn-text);
    letter-spacing: 0.01em;
}

.site-nav-home-section__meta {
    font-size: 12px;
    color: var(--sn-muted);
}

.nav-category-title .more-link {
    padding: 6px 12px;
    border-radius: 999px;
    background: #f1f5f9;
    color: #475569;
    font-weight: 600;
}

.nav-category-title .more-link:hover {
    background: var(--sn-accent-soft);
    color: var(--sn-accent);
}

.nav-links-grid {
    gap: 14px;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}

.nav-link-card {
    padding: 15px 16px;
    border-radius: var(--sn-radius-md);
    background: #f8fafc;
    border: 1px solid #e8eef5;
    transition:
        transform 0.28s var(--sn-ease),
        box-shadow 0.28s var(--sn-ease),
        background 0.28s,
        border-color 0.28s;
}

.nav-link-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 28px rgba(59, 130, 246, 0.14);
    background: #fff;
    border-color: rgba(59, 130, 246, 0.45);
}

.nav-links-grid .site-nav-logo--md,
.site-nav-link-grid--list .site-nav-logo--md {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    box-shadow:
        0 0 0 3px #fff,
        0 4px 12px rgba(15, 23, 42, 0.1);
    transition: transform 0.28s var(--sn-ease);
}

.nav-link-card:hover .site-nav-logo--md {
    transform: scale(1.06);
}

.nav-link-title {
    font-size: 14px;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 4px;
}

.nav-link-desc {
    font-size: 12px;
    color: #94a3b8;
    line-height: 1.4;
}

.nav-link-card--featured {
    padding-right: 52px;
    background: linear-gradient(145deg, #fffbeb 0%, #f8fafc 55%);
    border-color: rgba(245, 158, 11, 0.35);
}

.nav-link-card__badge {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 2;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #fff;
    background: linear-gradient(135deg, #f59e0b, #f97316);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.35);
    pointer-events: none;
}

/* 兼容旧 ribbon 类名 */
.nav-link-card__ribbon {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 2;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #f59e0b, #f97316);
    transform: none;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.35);
    pointer-events: none;
}

.nav-link-card__ext {
    right: 12px;
    bottom: 12px;
    width: 26px;
    height: 26px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.08);
}

.nav-link-card:hover .nav-link-card__ext {
    background: rgba(59, 130, 246, 0.14);
}

/* 卡片入场错峰 */
.site-nav-home-section.is-visible .nav-link-card {
    animation: site-nav-card-in 0.45s var(--sn-ease) both;
}

.site-nav-home-section.is-visible .nav-link-card:nth-child(1) { animation-delay: 0.02s; }
.site-nav-home-section.is-visible .nav-link-card:nth-child(2) { animation-delay: 0.05s; }
.site-nav-home-section.is-visible .nav-link-card:nth-child(3) { animation-delay: 0.08s; }
.site-nav-home-section.is-visible .nav-link-card:nth-child(4) { animation-delay: 0.11s; }
.site-nav-home-section.is-visible .nav-link-card:nth-child(5) { animation-delay: 0.14s; }
.site-nav-home-section.is-visible .nav-link-card:nth-child(6) { animation-delay: 0.17s; }
.site-nav-home-section.is-visible .nav-link-card:nth-child(7) { animation-delay: 0.2s; }
.site-nav-home-section.is-visible .nav-link-card:nth-child(8) { animation-delay: 0.23s; }
.site-nav-home-section.is-visible .nav-link-card:nth-child(n+9) { animation-delay: 0.26s; }

@keyframes site-nav-card-in {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.site-nav-tool-btn {
    border-radius: 14px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    box-shadow: var(--sn-shadow-md);
}

/* ---------- 深色主题对齐 v2 ---------- */
html.site-nav-theme-dark {
    --sn-page-bg: #0b1220;
    --sn-card: #1a2332;
    --sn-text: #e2e8f0;
    --sn-muted: #94a3b8;
}

html.site-nav-theme-dark .site-nav-layout,
html.site-nav-theme-dark .site-nav-body--embed {
    background:
        radial-gradient(ellipse 70% 45% at 60% -5%, rgba(99, 102, 241, 0.12), transparent 55%),
        var(--sn-page-bg);
}

html.site-nav-theme-dark .site-nav-sider {
    background: linear-gradient(180deg, #111827 0%, #0b1220 100%);
}

html.site-nav-theme-dark .site-nav-topbar,
html.site-nav-theme-dark .site-nav-topbar--shell {
    background: rgba(26, 35, 50, 0.92);
    border-bottom-color: #2d3a4f;
    box-shadow: none;
}

html.site-nav-theme-dark .nav-category-section {
    background: var(--sn-card);
    border-color: #2d3a4f;
}

html.site-nav-theme-dark .site-nav-home-section__head,
html.site-nav-theme-dark .nav-category-title {
    border-bottom-color: #2d3a4f;
}

html.site-nav-theme-dark .nav-category-title .more-link {
    background: #243044;
    color: #94a3b8;
}

html.site-nav-theme-dark .nav-link-card {
    background: #243044;
    border-color: #334155;
}

html.site-nav-theme-dark .nav-link-card:hover {
    background: #2b3d54;
}

html.site-nav-theme-dark .nav-links-grid .site-nav-logo--md {
    box-shadow:
        0 0 0 3px #1a2332,
        0 4px 12px rgba(0, 0, 0, 0.35);
}

html.site-nav-theme-dark .nav-link-title {
    color: #f1f5f9;
}

html.site-nav-theme-dark .site-nav-hero__eyebrow {
    color: rgba(165, 180, 252, 0.9);
}

html.site-nav-theme-dark .site-nav-hero__hint {
    color: rgba(148, 163, 184, 0.75);
}

@media (prefers-reduced-motion: reduce) {
    .site-nav-hero__orb,
    .site-nav-hero__bg-shine,
    .site-nav-home-section.is-visible .nav-link-card,
    .site-nav-topbar__quote-text {
        animation: none !important;
    }
}

@media screen and (max-width: 768px) {
    .site-nav-hero#banner-bear {
        padding: 36px 16px 30px !important;
        border-radius: 0 0 20px 20px;
        min-height: auto;
    }

    .site-nav-hero__eyebrow {
        letter-spacing: 0.14em;
    }

    .site-nav-hero__hint {
        display: none;
    }

    .site-nav-home-wrap {
        padding: 14px 14px 36px;
    }

    .nav-category-section {
        padding: 16px 14px 14px;
        border-radius: 14px;
    }

    .nav-links-grid {
        gap: 10px;
    }
}

@media screen and (max-width: 480px) {
    .site-nav-hero .left-cont form.search input.s {
        border-radius: 14px 14px 0 0 !important;
    }

    .site-nav-hero .left-cont form.search .btn {
        border-radius: 0 0 14px 14px !important;
        width: 100% !important;
    }
}