/*调整全局字体大小*/
body,html{font-size:14px;}

/*左导航悬浮sidebar-menu-inner宽度调整为90px*/
.sidebar-popup.sidebar-menu-inner > div > ul > li.sidebar-item>ul{position:absolute;top:0px;left:10px;width:90px;z-index:99}
.sidebar-popup.sidebar-menu-inner ul{width:90px}
.sidebar-popup.sidebar-menu-inner ul li{width:90px}

/*隐藏左导航scrollbar*/
.sidebar-menu.flex-fill::-webkit-scrollbar{display:none}

/*搜索框搜索图标颜色*/
#search button i{color:#6C757D;font-size:18px}

/*顶部导航栏字体+图标颜色*/
.big-header-banner .page-header{color:#ffffff;background:rgba(255,255,255,0);box-shadow:none;transition:color .3s,background-color .3s}
.big-header-banner:not(.header-bg) .page-header .navbar-nav>li>a,.big-header-banner:not(.header-bg) .navbar-menu a:not(.dropdown-item){color:#ffffff;}
.big-header-banner:not(.header-bg) .page-header .navbar-nav>li>a:hover,.big-header-banner:not(.header-bg) .navbar-menu a:not(.dropdown-item):hover{color:#dc3545;}
.big-header-banner:not(.header-bg) .header-mini-btn path{stroke:#ffffff;}
.big-header-banner:not(.header-bg) .header-mini-btn label:hover path{stroke:#ffffff;}

/*搜索栏字体+背景*/
.navbar-menu .bookmark-link{gap:4px;font-size:14px;font-weight:400;white-space:nowrap}
.navbar-menu .bookmark-link .fas{font-size:14px}
.header-big #search-text{color:#6C757D;}
.io-black-mode .header-big #search-text{color:#fff;}
.header-big #search-text{-webkit-backdrop-filter:none!important;backdrop-filter:none!important;}

/*搜索activate图标颜色*/
.header-big .search-type input:checked+label:before{content:'';border-width:8px 8px 0px 8px;border-style:solid;border-color:#ffffff transparent transparent;position:absolute;left:50%;top:0;margin-left:-8px}

/*主页搜索搜索框(头+底部)字体颜色*/
.header-big:not(.no-bg) .s-type-list{color:#20c997}
.header-big:not(.no-bg) .text-muted,.header-big:not(.no-bg) .search-type .menu-item a,.header-big:not(.no-bg) .big-title .h1{color:#ffffff!important}

/*主页header-banner底部宽度*/
.post-top{padding-bottom:50px}

/*左导航二级导航标题左侧距离*/
.sidebar-menu-inner ul li ul li a{margin-left:30px;}

/*头部导航二级导航iconfont图标*/
.navbar-collapse ul li.menu-item-has-children:after{content:'\e612';}

/*搜索部分背景样式*/
.header-big.css-color{background-size:unset;background-position:unset;animation:unset;}

/*搜索热词样式调整*/
.search-hot-text{
    position: absolute;
    z-index: 100;
    width: 100%;
    border-radius: 0 0 10px 10px;
    background: #FFF;
    box-shadow: 0px 4px 5px 0px #cccccc94;
    overflow: hidden;
}
.search-hot-text ul{
    margin: 0;
    padding: 5px 0;
}
.search-hot-text ul li{
    line-height: 30px;
    font-size: 14px;
    padding: 0px 25px;
    color: #777;
    cursor: pointer;
}
.io-black-mode .search-hot-text ul li{
    color: #fff;
}    
.search-hot-text ul li.current{
    background: #f1f1f1;
    color: #2196f3;
}
.search-hot-text ul li:hover{
    background: #f1f1f1;
    color: #2196f3;
    cursor: pointer;
}
.search-hot-text ul li span{
    display: inline-block;
    width: 20px;
    height: 20px;
    font-size: 12px;
    line-height: 20px;
    text-align: center;
    background: #e5e5e5;
    margin-right: 10px;
    border-radius: 10px;
    color: #999;
}

footer.main-footer .footer-text {
    text-align: center;
}
footer.main-footer .footer-text a {
    color: #007bff;
}
footer.main-footer .footer-text a:hover {
    color: red;
}

/*About页面*/
.panel .panel-body a {color: #007bff;}
.panel .panel-body a:hover {color: #979898;}

/*网格背景*/
.io-grey-mode .page-container .grid-bg {
    background-image: linear-gradient(rgba(50, 0, 0, 0.05) 1px, transparent 0), linear-gradient(90deg, rgba(50, 0, 0, 0.05) 1px, transparent 0); 
    background-size: 15px 15px;
    background-color: #d8d8d8;
}

/*导航 Logo 图标裁剪边角*/
.url-card .url-img > img {
    border-radius: 20%;
}

.url-card .url-img > img.card-logo-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: transparent;
}

/*站点 Logo 圆角*/
.logo img,
.navbar-brand img,
.seo-page-brand img {
    border-radius: 6px;
}

/* 侧边栏导航文字防止换行折断 */
.sidebar-menu-inner .sidebar-item > a {
    white-space: nowrap;
    word-break: normal;
}

/*隐藏顶部搜索框*/
#search-bg { display: none; }

/* ========== 搜索弹窗样式 ========== */
#search-modal.show ~ .modal-backdrop {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
    background: transparent !important;
    opacity: 0 !important;
}

/* ========== SEO 关键词落地页 ========== */
.seo-landing-body {
    margin: 0;
    color: #1f2937;
    background:
        linear-gradient(rgba(50, 0, 0, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(50, 0, 0, 0.035) 1px, transparent 1px),
        #f3f4f6;
    background-size: 18px 18px;
}

.seo-page-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}

.seo-page-header-inner {
    width: min(1180px, calc(100% - 32px));
    min-height: 68px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.seo-page-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #111827;
    font-size: 17px;
    font-weight: 700;
}

.seo-page-brand:hover {
    color: #f1404b;
}

.seo-page-brand img {
    border-radius: 10px;
}

.seo-page-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.seo-page-nav a {
    padding: 8px 12px;
    border-radius: 999px;
    color: #4b5563;
    font-size: 13px;
    font-weight: 600;
}

.seo-page-nav a:hover {
    color: #0f766e;
    background: rgba(32, 201, 151, 0.1);
}

.seo-landing-main {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0 56px;
}

.seo-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    color: #7b8492;
    font-size: 13px;
}

.seo-breadcrumb a {
    color: #0f766e;
}

.seo-landing-hero {
    display: flex;
    justify-content: space-between;
    gap: 36px;
    padding: 44px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 28px;
    background:
        radial-gradient(circle at 90% 5%, rgba(32, 201, 151, 0.2), transparent 34%),
        linear-gradient(135deg, #ffffff, #f8fafc);
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.09);
}

.seo-landing-hero-copy {
    max-width: 790px;
}

.seo-landing-eyebrow,
.seo-section-kicker {
    margin: 0 0 10px;
    color: #0f9f7b;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.seo-landing-hero h1 {
    margin: 0;
    color: #111827;
    font-size: 46px;
    line-height: 1.18;
    letter-spacing: -.025em;
}

.seo-landing-lead {
    max-width: 760px;
    margin: 20px 0 0;
    color: #5b6472;
    font-size: 16px;
    line-height: 1.9;
}

.seo-landing-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 26px;
}

.seo-landing-actions a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    min-height: 44px;
    padding: 10px 18px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 700;
}

.seo-landing-actions a::after,
.seo-related-links a::after,
.home-seo-tags a::after {
    content: "→";
    font-size: 0.95em;
    line-height: 1;
    transition: transform 0.2s ease;
}

.seo-landing-actions a:hover::after,
.seo-related-links a:hover::after,
.home-seo-tags a:hover::after {
    transform: translateX(2px);
}

.seo-primary-link {
    color: #fff !important;
    background: #f1404b;
    box-shadow: 0 10px 24px rgba(241, 64, 75, 0.22);
}

.seo-primary-link:hover {
    background: #d93540;
}

.seo-secondary-link {
    color: #0f766e !important;
    border: 1px solid rgba(15, 118, 110, 0.2);
    background: rgba(32, 201, 151, 0.08);
}

.seo-landing-summary {
    min-width: 190px;
    align-self: stretch;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 24px;
    border-radius: 22px;
    border: 1px solid rgba(15, 23, 42, 0.07);
    background: rgba(255, 255, 255, 0.75);
}

.seo-landing-summary strong {
    color: #111827;
    font-size: 48px;
    line-height: 1;
}

.seo-landing-summary span {
    margin-top: 8px;
    color: #4b5563;
    font-weight: 700;
}

.seo-landing-summary small {
    margin-top: 18px;
    color: #8b93a1;
}

.seo-landing-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 30px;
    margin-top: 30px;
    align-items: start;
}

.seo-article-content {
    padding: 32px 36px;
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 22px;
    background: #fff;
}

.seo-article-content h2 {
    margin: 34px 0 14px;
    color: #111827;
    font-size: 25px;
    line-height: 1.35;
}

.seo-article-content h2:first-child {
    margin-top: 0;
}

.seo-article-content p,
.seo-article-content li {
    color: #505967;
    font-size: 15px;
    line-height: 1.95;
}

.seo-article-content ol,
.seo-article-content ul {
    padding-left: 24px;
}

.seo-article-toc {
    position: sticky;
    top: 92px;
    display: grid;
    gap: 4px;
    padding: 22px;
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.92);
}

.seo-article-toc strong {
    margin-bottom: 8px;
    color: #111827;
}

.seo-article-toc a {
    padding: 8px 10px;
    border-radius: 9px;
    color: #5b6472;
    font-size: 13px;
}

.seo-article-toc a:hover {
    color: #0f766e;
    background: rgba(32, 201, 151, 0.08);
}

.seo-entry-section,
.seo-faq-section,
.seo-related-section {
    margin-top: 30px;
    padding: 34px 36px;
    border: 1px solid rgba(15, 23, 42, 0.07);
    border-radius: 22px;
    background: #fff;
}

.seo-section-heading {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    align-items: end;
}

.seo-section-heading h2,
.seo-faq-section h2,
.seo-related-section h2 {
    margin: 0;
    color: #111827;
    font-size: 27px;
}

.seo-section-heading > p {
    max-width: 520px;
    margin: 0;
    color: #697180;
    font-size: 13px;
    line-height: 1.8;
}

.seo-entry-group {
    margin-top: 30px;
}

.seo-entry-group > h3 {
    margin: 0 0 16px;
    color: #374151;
    font-size: 19px;
}

.seo-entry-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.seo-entry-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: 20px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 16px;
    background: #fbfcfd;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.seo-entry-card:hover {
    transform: translateY(-2px);
    border-color: rgba(32, 201, 151, 0.35);
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.08);
}

.seo-entry-card-head {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 12px;
}

.seo-entry-card-head img {
    flex: 0 0 48px;
    object-fit: cover;
    border-radius: 12px;
    background: transparent;
}

.seo-entry-card-head > div {
    min-width: 0;
}

.seo-entry-card h4 {
    overflow: hidden;
    margin: 0;
    color: #111827;
    font-size: 15px;
    line-height: 1.4;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.seo-entry-card-head span {
    color: #8a93a1;
    font-size: 12px;
}

.seo-entry-card p {
    flex: 1;
    margin: 16px 0;
    color: #687180;
    font-size: 13px;
    line-height: 1.7;
}

.seo-entry-card > a {
    color: #0f8f72;
    font-size: 13px;
    font-weight: 700;
}

.seo-faq-list {
    display: grid;
    gap: 12px;
    margin-top: 24px;
}

.seo-faq-list details {
    padding: 0 20px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 14px;
    background: #fbfcfd;
}

.seo-faq-list summary {
    padding: 18px 0;
    color: #263140;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

.seo-faq-list p {
    margin: -4px 0 18px;
    color: #667080;
    line-height: 1.8;
}

.seo-related-links {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 20px;
}

.seo-related-links a {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 16px;
    border-radius: 13px;
    color: #0f766e;
    font-weight: 700;
    background: rgba(32, 201, 151, 0.09);
}

.seo-related-links a:hover {
    background: rgba(32, 201, 151, 0.15);
}

.seo-page-footer {
    padding: 30px 16px 42px;
    color: #7b8492;
    text-align: center;
    font-size: 12px;
}

.seo-page-footer p {
    margin: 6px 0;
}

@media (max-width: 991.98px) {
    .seo-landing-hero {
        padding: 34px;
        flex-direction: column;
    }

    .seo-landing-summary {
        width: 100%;
        min-width: 0;
    }

    .seo-landing-layout {
        grid-template-columns: 1fr;
    }

    .seo-article-toc {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .seo-entry-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .seo-related-links {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 767.98px) {
    .seo-page-header-inner,
    .seo-landing-main {
        width: min(100% - 24px, 1180px);
    }

    .seo-page-header-inner {
        min-height: 60px;
    }

    .seo-page-nav {
        display: none;
    }

    .seo-landing-main {
        padding-top: 18px;
    }

    .seo-landing-hero,
    .seo-article-content,
    .seo-entry-section,
    .seo-faq-section,
    .seo-related-section {
        padding: 24px 20px;
        border-radius: 18px;
    }

    .seo-landing-hero h1 {
        font-size: 30px;
    }

    .seo-landing-lead {
        font-size: 15px;
    }

    .seo-section-heading {
        align-items: start;
        flex-direction: column;
        gap: 12px;
    }

    .seo-entry-grid,
    .seo-related-links,
    .seo-article-toc {
        grid-template-columns: 1fr;
    }
}

#search-modal [data-dismiss="modal"],
#modal-filter-count {
    color: rgba(49, 52, 55, 0.62) !important;
}
.io-black-mode #search-modal [data-dismiss="modal"],
.io-black-mode #modal-filter-count {
    color: rgba(255, 255, 255, 0.68) !important;
}
#search-modal .modal-dialog {
    max-width: 600px;
}
#footer-tools a[rel="search"] {
    border: 1px solid rgba(255, 255, 255, 0.45);
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
    transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}
#footer-tools a[rel="search"]:hover,
#footer-tools a[rel="search"]:focus {
    border-color: rgba(255, 255, 255, 0.75);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.12);
}
#modal-filter-input {
    border: 2px solid rgba(49, 52, 55, 0.22);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}
#modal-filter-input:focus {
    border-color: rgba(241, 64, 75, 0.78);
    box-shadow: 0 0 0 3px rgba(241, 64, 75, 0.16), 0 14px 36px rgba(0, 0, 0, 0.18);
}
#modal-filter-input::placeholder {
    color: #aaa;
}
.io-black-mode #footer-tools a[rel="search"] {
    border-color: rgba(255, 255, 255, 0.28);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.05);
}
.io-black-mode #modal-filter-input {
    background: #2c2c2c !important;
    border-color: rgba(255, 255, 255, 0.18);
    color: #e0e0e0 !important;
}
.io-black-mode #modal-filter-input:focus {
    border-color: rgba(255, 110, 119, 0.82);
    box-shadow: 0 0 0 3px rgba(241, 64, 75, 0.22), 0 14px 36px rgba(0, 0, 0, 0.28);
}

.home-seo-intro {
    margin: 0 15px 18px;
}

@media (min-width: 768px) {
    .home-seo-intro {
        margin: 0 30px 18px;
    }
}

.home-seo-card {
    overflow: hidden;
    border: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
}

.home-seo-card .card-body {
    padding: 20px 20px;
    background:
        radial-gradient(circle at top right, rgba(226, 240, 255, 0.95), transparent 28%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
}

.home-seo-hero {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    justify-content: space-between;
}

.home-seo-copy {
    max-width: 760px;
}

.home-seo-eyebrow {
    margin: 0 0 6px;
    font-size: 14px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: #000;
    font-weight: 700;
}

.home-seo-title {
    margin: 0 0 8px;
    font-size: 24px;
    line-height: 1.2;
    color: #1f2937;
    font-weight: 800;
}

.home-seo-desc {
    margin: 0;
    max-width: 720px;
    color: #5b6472;
    line-height: 1.6;
    font-size: 11px;
}

.home-seo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.home-seo-tags a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid #000;
    background: transparent;
    color: #000;
    font-size: 10px;
    font-weight: 600;
}

.home-seo-tags a:hover {
    color: #000;
    background: rgba(0, 0, 0, 0.04);
    border-color: #000;
}

.home-seo-summary {
    min-width: 180px;
    display: grid;
    gap: 8px;
}

.home-seo-metric {
    padding: 12px 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.84);
    border: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.home-seo-metric-value {
    display: block;
    font-size: 19px;
    font-weight: 700;
    line-height: 1;
    color: #111827;
}

.home-seo-metric-label {
    display: block;
    margin-top: 4px;
    color: #5b6472;
    font-size: 10px;
}

.home-seo-faq {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 16px;
}

.home-seo-faq-item {
    padding: 12px 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(15, 23, 42, 0.06);
}

.home-seo-faq-item h3 {
    margin: 0 0 6px;
    font-size: 14px;
    color: #1f2937;
}

.home-seo-topics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 14px;
}

.home-seo-topics a {
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(32, 201, 151, 0.08);
    color: #0f766e;
    font-size: 14px;
    font-weight: 700;
}

.home-seo-topics a:hover {
    background: rgba(32, 201, 151, 0.14);
}

.home-seo-faq-item p {
    margin: 0;
    font-size: 12px;
    line-height: 1.55;
    color: #5b6472;
}

.io-black-mode .home-seo-card {
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.24);
}

.io-black-mode .home-seo-card .card-body {
    background:
        radial-gradient(circle at top right, rgba(32, 201, 151, 0.12), transparent 28%),
        linear-gradient(135deg, rgba(22, 28, 36, 0.96), rgba(18, 24, 32, 0.96));
}

.io-black-mode .home-seo-title,
.io-black-mode .home-seo-metric-value,
.io-black-mode .home-seo-faq-item h3 {
    color: #f8fafc;
}

.io-black-mode .home-seo-desc,
.io-black-mode .home-seo-metric-label,
.io-black-mode .home-seo-faq-item p {
    color: rgba(226, 232, 240, 0.8);
}

.io-black-mode .home-seo-metric,
.io-black-mode .home-seo-faq-item {
    background: rgba(15, 23, 42, 0.44);
    border-color: rgba(255, 255, 255, 0.08);
}

@media (max-width: 991.98px) {
    .home-seo-hero {
        flex-direction: column;
    }

    .home-seo-summary {
        width: 100%;
        min-width: 0;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .home-seo-faq {
        grid-template-columns: 1fr;
    }

    .home-seo-topics {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 575.98px) {
    .home-seo-intro {
        margin: 0 15px 16px;
    }

    .home-seo-card .card-body {
        padding: 20px 20px;
    }

    .home-seo-title {
        font-size: 18px;
    }

    .home-seo-summary {
        grid-template-columns: 1fr;
    }
}