/* A consistent presentation layer for the existing navigation catalog. */
body {
    --nav-bg: #f6f7f9;
    --nav-surface: #ffffff;
    --nav-text: #252b35;
    --nav-muted: #6f7885;
    --nav-border: #e9ecf0;
    --nav-accent: #e77836;
    --nav-accent-soft: #fff1e7;
    --nav-hero: #fffaf3;
    --nav-hero-border: #f2e7d9;
    --nav-shadow: 0 6px 24px rgba(32, 44, 62, .04);
    color: var(--nav-text);
    background: var(--nav-bg);
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
}
body.io-black-mode {
    --nav-bg: #191d23;
    --nav-surface: #232830;
    --nav-text: #e9edf3;
    --nav-muted: #a0a8b5;
    --nav-border: #343b45;
    --nav-accent: #f7a16a;
    --nav-accent-soft: #3b2d26;
    --nav-hero: #2b2825;
    --nav-hero-border: #44392e;
    --nav-shadow: 0 6px 24px rgba(0, 0, 0, .08);
}
body .page-container .main-content.grid-bg {
    background: var(--nav-bg);
    background-image: none;
    min-height: 100vh;
}
a { color: inherit; }
.nav-icon-holder { display: inline-flex; align-items: center; justify-content: center; font-style: normal; line-height: 1; }
.nav-icon-holder::before, .nav-icon-holder::after { content: none !important; }
.nav-symbol { display: block; width: 1em; height: 1em; flex: none; }
a:focus-visible, button:focus-visible, label:focus-visible {
    outline: 3px solid var(--nav-accent);
    outline-offset: 4px;
}
body #sidebar { width: 224px !important; }
body #sidebar .sidebar-nav-inner {
    width: 100%; max-width: none;
    background: var(--nav-surface);
    border-right: 1px solid var(--nav-border);
}
body #sidebar + .main-content { margin-left: 224px; }
body #sidebar .sidebar-logo { border-bottom: none !important; padding: 24px 22px 20px; }
body #sidebar .logo { line-height: normal; text-align: left; }
.nav-brand { display: flex; align-items: center; gap: 11px; }
.nav-brand-mark {
    display: inline-flex; align-items: center; justify-content: center;
    width: 39px; height: 39px; flex: none;
    border-radius: 12px; color: #fff; background: #e77836;
}
.nav-brand-mark svg { width: 25px; height: 25px; }
.nav-brand-copy { display: flex; flex-direction: column; gap: 3px; }
.nav-brand-copy strong { font-size: 18px; letter-spacing: 1px; color: var(--nav-text); }
.nav-brand-copy small { color: var(--nav-muted); font-size: 10px; letter-spacing: .5px; }
.sidebar-caption { margin: 18px 25px 10px; color: var(--nav-muted); font-size: 11px; letter-spacing: 2px; }
body #sidebar .sidebar-menu-inner { padding: 0 13px; }
body #sidebar .sidebar-item { margin: 5px 0; list-style: none; }
body #sidebar .sidebar-item > a {
    display: flex; align-items: center; gap: 0;
    padding: 0 14px; height: 45px; line-height: normal;
    max-height: none; border-radius: 10px;
    color: #727b89; font-size: 13px;
}
body.io-black-mode #sidebar .sidebar-item > a { color: var(--nav-muted); }
body #sidebar .sidebar-item > a > i { width: 21px; font-size: 15px; flex: none; margin-right: 11px !important; }
body #sidebar .sidebar-item > a > .nav-icon-holder { font-size: 18px; }
body #sidebar .sidebar-item > a:hover { background: var(--nav-bg); color: var(--nav-text); }
body #sidebar .sidebar-item > a.is-current { background: var(--nav-accent-soft); color: var(--nav-accent); font-weight: 600; }
.sidebar-count { margin-left: auto; font-size: 10px; font-weight: 500; opacity: .7; }
.sidebar-close { display: none; }
body #sidebar .border-top { border-color: var(--nav-border) !important; margin: 16px 17px 14px; padding: 10px 0 0 !important; }
body #sidebar .flex-bottom .sidebar-item > a { height: 36px; font-size: 12px; padding-left: 9px; }
body #sidebar.mini-sidebar { width: 72px !important; }
body #sidebar.mini-sidebar + .main-content { margin-left: 72px; }
body #sidebar.mini-sidebar .sidebar-menu { width: 72px; }
body #sidebar.mini-sidebar .sidebar-logo { padding: 24px 16px; }
body #sidebar.mini-sidebar .sidebar-menu-inner { padding: 0 10px; }
body #sidebar.mini-sidebar .sidebar-item > a { justify-content: center; padding: 0; }
body #sidebar.mini-sidebar .sidebar-item > a > i { margin: 0 !important; text-align: center; }
body #sidebar.mini-sidebar .sidebar-count, body #sidebar.mini-sidebar .sidebar-caption { display: none; }
body #sidebar.mini-sidebar .border-top { margin: 16px 10px; }
body #sidebar + .main-content .page-header { left: 224px; }
body #sidebar.mini-sidebar + .main-content .page-header { left: 72px; }
body .big-header-banner .page-header {
    color: var(--nav-text); background: var(--nav-surface);
    border-bottom: 1px solid var(--nav-border); box-shadow: none;
}
body .big-header-banner .navbar { min-height: 70px; padding: 0 36px; }
body #header .header-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 440px) minmax(0, 1fr); gap: 20px; align-items: center; }
.header-left { display: flex; align-items: center; gap: 10px; min-width: 0; }
.header-left .mobile-menu > a { color: var(--nav-muted); }
.header-left .mobile-menu i { font-size: 22px; }
.header-search { display: flex; align-items: center; width: 100%; height: 40px; margin: 0; border: 1px solid var(--nav-border); border-radius: 10px; background: var(--nav-bg); transition: border-color .2s, box-shadow .2s; }
.header-search:focus-within { border-color: var(--nav-accent); box-shadow: 0 0 0 3px var(--nav-accent-soft); }
.header-search input { width: 100%; min-width: 0; height: 100%; padding: 0 14px; border: none; outline: none; border-radius: inherit; background: transparent; color: var(--nav-text); font-size: 12px; }
.header-search input::placeholder { color: var(--nav-muted); }
.header-search select { width: 96px; max-width: 32%; height: 26px; flex: none; margin-left: 9px; padding: 0 8px; border: none; border-right: 1px solid var(--nav-border); outline: none; border-radius: 0; background: transparent; color: var(--nav-accent); font-size: 11px; cursor: pointer; }
.header-search option, .header-search optgroup { color: var(--nav-text); background: var(--nav-surface); }
.header-search button { display: flex; align-items: center; justify-content: center; width: 38px; height: 34px; flex: none; margin-right: 3px; padding: 0; border: none; border-radius: 7px; background: transparent; color: var(--nav-accent); cursor: pointer; }
.header-search button:hover { background: var(--nav-accent-soft); }
.header-search button svg { width: 19px; height: 19px; }
body .big-header-banner .page-header .navbar-nav > li > a,
body .big-header-banner .page-header .navbar-menu a:not(.dropdown-item) { color: var(--nav-muted); }
body .big-header-banner .page-header .navbar-nav > li:first-child > a { color: var(--nav-accent); }
body .big-header-banner .page-header .navbar-nav > li > a { padding: 8px 13px; font-size: 13px; }
body .big-header-banner .page-header .navbar-nav > li > a:hover { color: var(--nav-accent); }
body #header .navbar-nav > li > a,
body #header .navbar-menu a:not(.dropdown-item) { color: var(--nav-muted); }
body #header .navbar-nav > li:first-child > a,
body #header .navbar-nav > li > a:hover { color: var(--nav-accent); }
body #header .site-menu .nav-icon-holder { font-size: 17px; margin-right: 8px; }
body #header .nav-search > a, body #header .mobile-menu > a {
    display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px;
}
body .big-header-banner .page-header .header-mini-btn path { stroke: var(--nav-muted); }
.header-mini-btn { margin-right: 13px; }
.header-calendar { display: flex; align-items: center; justify-self: end; gap: 12px; margin-left: 6px; white-space: nowrap; }
.header-calendar time { color: var(--nav-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.header-calendar #nav-current-weekday { color: var(--nav-accent); background: var(--nav-accent-soft); border-radius: 6px; padding: 5px 9px; font-size: 11px; }
.header-secondary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 36px 12px; }
.header-intro { display: flex; align-items: center; gap: 10px; margin: 0; color: var(--nav-text); font-size: 13px; font-weight: 600; white-space: nowrap; }
.header-intro span { color: var(--nav-muted); font-size: 11px; font-weight: 400; }
.header-quicklinks { display: flex; align-items: center; gap: 8px; }
.header-quicklink { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border: 1px solid var(--nav-border); border-radius: 7px; color: var(--nav-muted); background: var(--nav-bg); font-size: 11px; white-space: nowrap; }
.header-quicklink > i { color: var(--nav-accent); font-size: 14px; }
.header-quicklink:hover { color: var(--nav-accent); border-color: var(--nav-accent); background: var(--nav-accent-soft); }
body .big-header-banner .weather { display: none; }
body .big-header-banner .placeholder { height: 116px !important; }
.category-dock { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 20px 36px 24px; }
.category-dock-label { color: var(--nav-muted); font-size: 11px; margin-right: 7px; flex: none; }
.category-dock a { display: inline-flex; align-items: center; gap: 8px; font-size: 11px; padding: 8px 12px; background: var(--nav-surface); border: 1px solid var(--nav-border); border-radius: 8px; white-space: nowrap; }
.category-dock a span { font-size: 10px; color: var(--nav-muted); }
.category-dock a:hover, .category-dock a.is-current { color: var(--nav-accent); border-color: var(--nav-accent); background: var(--nav-accent-soft); }
body #content { padding: 0 36px; max-width: 1600px; }
#content > br { display: none; }
.resource-section { margin-bottom: 26px; scroll-margin-top: 130px; }
.resource-section .section-heading { display: flex; align-items: center; gap: 12px; min-height: 30px; margin-bottom: 15px; }
body .resource-section h4 { margin: 0 !important; font-size: 17px !important; font-weight: 700; color: var(--nav-text) !important; display: flex; align-items: center; gap: 10px; }
body .resource-section h4 > i { display: inline-flex; align-items: center; justify-content: center; color: var(--nav-accent); font-size: 15px !important; width: 31px; height: 31px; border-radius: 9px; background: var(--nav-accent-soft); margin: 0 !important; }
body .resource-section h4 > .nav-icon-holder .nav-symbol { width: 18px; height: 18px; }
.section-heading::after { content: ""; height: 1px; background: var(--nav-border); flex: 1; margin-left: 3px; }
body #content .resource-section .row { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin: 0; }
body #content .url-card { width: 100%; max-width: none; padding: 0; min-width: 0; }
body #content .url-body { border: 1px solid var(--nav-border); background: var(--nav-surface); border-radius: 10px; box-shadow: var(--nav-shadow); transition: transform .2s, border-color .2s, box-shadow .2s; }
body #content .url-card .url-body:hover { border-color: #efbe9f; transform: translateY(-3px); box-shadow: 0 8px 22px rgba(40, 49, 65, .075); }
body #content .url-card .card { margin: 0 !important; border: none; border-radius: 10px; background: transparent; box-shadow: none; color: var(--nav-text); }
body #content .url-card .card-body { padding: 12px 14px; }
body #content .url-card .url-content { gap: 10px; }
body #content .url-card .url-img { width: 32px; height: 32px; margin: 0 !important; border-radius: 8px; }
body #content .url-card .url-img img { width: 30px; height: 30px; max-width: 100%; object-fit: contain; border-radius: 6px; }
body #content .url-card .url-info { min-width: 0; padding-right: 12px; }
body #content .url-card strong { font-size: 13px; font-weight: 650; color: var(--nav-text); }
body #content .url-card .url-info p { font-size: 11px; color: var(--nav-muted) !important; margin-top: 5px !important; line-height: 1.65; }
body #content .url-card a.togo { top: 17px; right: 5px; width: 24px; color: var(--nav-muted) !important; opacity: .35; }
body #content .url-card a.togo:hover { color: var(--nav-accent) !important; }
body #content .friendlink { background: var(--nav-surface); border: 1px solid var(--nav-border); border-radius: 12px; box-shadow: none; }
body #content .friendlink:has(.card-body:empty) { display: none; }
body #content .friendlink .card-body { display: flex; gap: 24px; flex-wrap: wrap; padding: 20px; }
body #content .friendlink a { color: var(--nav-muted); font-size: 12px; }
body #content .friendlink a:hover { color: var(--nav-accent); }
body footer.main-footer { border-top: 1px solid var(--nav-border); margin: 4px 36px 0; padding: 24px 0 30px; color: var(--nav-muted); line-height: 2; }
body footer.main-footer .footer-text { text-align: left; font-size: 10px; }
body footer.main-footer .footer-text a { color: var(--nav-muted); }
body #footer-tools { right: 13px; bottom: 20px; }
body #footer-tools .btn { background: var(--nav-surface); color: var(--nav-muted); border: 1px solid var(--nav-border); box-shadow: var(--nav-shadow); width: 36px; height: 36px; line-height: 24px; }
body #footer-tools .btn:hover { color: var(--nav-accent); }
body .search-modal .modal-content { border-radius: 18px; background: var(--nav-surface); border: 1px solid var(--nav-border); }
body .search-modal .search-key { background: var(--nav-bg); border: 1px solid var(--nav-border); border-radius: 9px; color: var(--nav-text); }
body .search-modal .text-muted { color: var(--nav-muted) !important; }
body .search-modal #search button { background: #e77836; }
body .search-modal #search button i { color: #fff; }
body .search-hot-text { background: var(--nav-surface); border: 1px solid var(--nav-border); border-radius: 10px; box-shadow: var(--nav-shadow); }
body .search-hot-text ul li { color: var(--nav-text); }
body .search-hot-text ul li:hover { background: var(--nav-accent-soft); color: var(--nav-accent); }
@media (min-width: 1800px) {
    body #content .resource-section .row { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}
@media (max-width: 1199px) {
    body #header .header-layout { grid-template-columns: minmax(0, 1fr) minmax(220px, 360px) minmax(0, 1fr); gap: 16px; }
    body #content .resource-section .row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    body #content .url-card .card-body { padding: 12px; }
}
@media (max-width: 991px) {
    .header-secondary { padding-left: 24px; padding-right: 24px; justify-content: center; }
    .header-intro { display: none; }
    body .big-header-banner .navbar { padding-left: 24px; padding-right: 24px; }
    body #header .header-layout { grid-template-columns: auto minmax(120px, 1fr) auto; gap: 12px; }
    .header-calendar { gap: 8px; }
    .header-calendar time { font-size: 11px; }
    body #content { padding: 0 24px; }
    body #content .resource-section .row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 767.98px) {
    .sidebar-close {
        display: flex; align-items: center; justify-content: center; position: absolute;
        top: 23px; right: 16px; width: 38px; height: 38px; border: none;
        border-radius: 10px; color: var(--nav-muted); background: var(--nav-bg); font-size: 24px;
    }
    body #sidebar { width: 244px !important; }
    body #sidebar + .main-content, body #sidebar.mini-sidebar + .main-content { margin-left: 0; }
    body #sidebar + .main-content .page-header, body #sidebar.mini-sidebar + .main-content .page-header { left: 0; }
    body .big-header-banner .navbar { min-height: 62px; padding: 0 20px; }
    body #header .navbar { padding: 12px 16px; }
    body #header .header-layout { grid-template-columns: minmax(0, 1fr) auto; gap: 10px 12px; }
    .header-left { grid-column: 1; grid-row: 1; gap: 8px; }
    .header-calendar { grid-column: 2; grid-row: 1; margin: 0; gap: 7px; }
    .header-calendar #nav-current-weekday { font-size: 10px; padding: 4px 7px; }
    .header-search { grid-column: 1 / -1; grid-row: 2; height: 40px; }
    body .big-header-banner .navbar-brand { display: flex; align-items: center; gap: 9px; margin: 0; font-size: 15px; color: var(--nav-text); font-weight: 700; }
    .navbar-brand .nav-brand-mark { width: 29px; height: 29px; border-radius: 9px; }
    .navbar-brand .nav-brand-mark svg { width: 19px; height: 19px; }
    body .big-header-banner .placeholder { height: 142px !important; }
    .header-secondary { padding: 0 16px 12px; }
    .category-dock { margin: 16px 16px 22px; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; padding-bottom: 3px; }
    .category-dock::-webkit-scrollbar { display: none; }
    .category-dock-label { display: none; }
    .category-dock a { padding: 8px 11px; }
    body #content { padding: 0 16px; }
    .resource-section { margin-bottom: 26px; }
    .resource-section .section-heading { margin-bottom: 12px; gap: 10px; }
    body .resource-section h4 { font-size: 15px !important; gap: 8px; }
    body .resource-section h4 > i { width: 28px; height: 28px; font-size: 13px !important; }
    body #content .resource-section .row { gap: 10px; }
    body #content .url-card .card-body { padding: 11px 10px; min-height: 66px; }
    body #content .url-card .url-content { gap: 9px; }
    body #content .url-card .url-img { width: 28px; height: 28px; border-radius: 6px; }
    body #content .url-card .url-img img { width: 28px; height: 28px; }
    body #content .url-card .url-info { padding-right: 0; }
    body #content .url-card strong { font-size: 12px; }
    body #content .url-card .url-info p { font-size: 10px; margin-top: 5px !important; }
    body #content .url-card a.togo { display: none; }
    body footer.main-footer { margin: 0 16px; padding: 20px 0; }
    body #footer-tools { right: 5px; bottom: 12px; }
    body #content .friendlink .card-body { gap: 16px; }
}
@media (max-width: 359px) {
    body #header .navbar-brand > span:not(.nav-brand-mark) { display: none; }
    body #content .resource-section .row { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    body #content .url-body, .hero-shortcut, body #sidebar, .main-content { transition: none !important; }
    body #content .url-card .url-body:hover, .hero-shortcut:hover { transform: none; }
}