:root {
    --gp-bg: #f4f4f4;
    --gp-surface: #ffffff;
    --gp-text: #2f2f2f;
    --gp-title: #1d1d1d;
    --gp-muted: #666666;
    --gp-line: #e0e0e0;
    --gp-link: #1f3f6f;
    --gp-link-hover: #4f40b0;
    --gp-accent: #5d4bc4;
    --gp-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --gp-radius: 4px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 17px;
    line-height: 1.6;
    color: var(--gp-text);
    background: var(--gp-bg);
}

a {
    color: var(--gp-link);
    text-decoration: none;
    transition: color 0.15s ease, opacity 0.15s ease;
}

a:hover {
    color: var(--gp-link-hover);
    text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--gp-accent);
    outline-offset: 2px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
    width: 100%;
    margin: 0 0 1.5em;
}

table,
td,
th {
    border: 1px solid rgba(0, 0, 0, 0.1);
}

th,
td {
    padding: 8px 12px;
    text-align: left;
}

th {
    font-weight: 700;
    background: #f7f7f7;
}

h1,
h2,
h3 {
    margin: 0 0 16px;
    line-height: 1.25;
    color: var(--gp-title);
    font-weight: 600;
}

h1 {
    font-size: 42px;
}

h2 {
    font-size: 34px;
}

h3 {
    font-size: 28px;
}

p {
    margin: 0 0 1.2em;
}

.screen-reader-text {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.screen-reader-text:focus {
    left: 10px;
    top: 10px;
    width: auto;
    height: auto;
    background: #fff;
    padding: 8px 12px;
    z-index: 999;
}

.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--gp-line);
}

.inside-header,
.inside-navigation,
.inside-site-info {
    max-width: 1200px;
    margin: 0 auto;
    padding: 18px 26px;
}

.inside-header {
    display: flex;
    align-items: center;
    gap: 20px;
}

.site-logo a {
    display: inline-flex;
    align-items: center;
}

.site-logo img {
    display: block;
    width: auto;
    height: 52px;
    max-width: min(320px, 42vw);
    object-fit: contain;
}

.mobile-menu-control-wrapper {
    display: none;
    margin-left: auto;
}

.menu-toggle {
    border: 1px solid var(--gp-line);
    background: #ffffff;
    color: var(--gp-title);
    border-radius: var(--gp-radius);
    font-size: 14px;
    line-height: 1;
    padding: 10px 14px;
    cursor: pointer;
}

.menu-toggle:hover {
    background: #f3f0ff;
    border-color: #cfc4ff;
}

.menu-toggle:active {
    background: #e7e0ff;
}

.menu-toggle:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.main-navigation {
    margin-left: auto;
}

.main-nav > ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.main-nav > ul > li > a {
    display: block;
    padding: 10px 14px;
    border-radius: 4px;
    color: #3a3a3a;
    font-size: 15px;
    font-weight: 500;
}

.main-nav > ul > li > a:hover {
    text-decoration: none;
    background: #f3f0ff;
    color: var(--gp-link-hover);
}

.site.grid-container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px;
}

.site-content {
    display: flex;
}

.content-area {
    width: 100%;
}

.with-right-nav {
    align-items: flex-start;
    gap: 20px;
}

.with-right-nav .content-area {
    width: calc(100% - 340px);
}

.page-side-nav {
    width: 320px;
    flex: 0 0 320px;
}

.page-side-nav .side-block {
    position: sticky;
    top: 20px;
}

.site-main {
    margin: 20px 0;
}

.site-main > * {
    margin-bottom: 20px;
}

.page-header,
.inside-article,
.paging-navigation,
.toc-shell,
.side-block,
.related-block,
.error-wrap {
    background: var(--gp-surface);
    border: 1px solid var(--gp-line);
    border-radius: var(--gp-radius);
    box-shadow: var(--gp-shadow);
    padding: 28px;
}

.page-title,
.entry-title {
    margin-bottom: 10px;
}

.home-logo {
    margin-bottom: 14px;
}

.home-logo img {
    display: block;
}

.home-slogan,
.taxonomy-description {
    color: var(--gp-muted);
}

.home-block + .home-block {
    margin-top: 28px;
}

.block-heading {
    margin-bottom: 18px;
}

.post .inside-article {
    margin: 0;
}

.entry-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    font-size: 14px;
    color: var(--gp-muted);
}

.post-image {
    margin-top: 16px;
}

.post-image img {
    border-radius: 4px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.entry-summary {
    margin-top: 14px;
}

.read-more {
    margin-left: 8px;
    font-weight: 600;
}

.hot-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--gp-line);
}

.hot-list li {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px solid var(--gp-line);
}

.hot-list span {
    color: var(--gp-muted);
    font-size: 13px;
    white-space: nowrap;
}

.breadcrumb-wrap {
    margin-bottom: 16px;
}

.breadcrumb-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--gp-muted);
}

.breadcrumb-item:not(.is-current)::after {
    content: "/";
    margin-left: 8px;
    color: #9b9b9b;
}

.paging-navigation {
    display: flex;
    justify-content: center;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.page-numbers {
    border: 1px solid var(--gp-line);
    border-radius: 3px;
    padding: 6px 11px;
    font-size: 14px;
}

.page-numbers.current {
    border-color: var(--gp-accent);
    background: var(--gp-accent);
    color: #fff;
}

.btn-load-more {
    border: 1px solid transparent;
    background: var(--gp-accent);
    color: #fff;
    font-size: 14px;
    border-radius: 4px;
    padding: 10px 18px;
    cursor: pointer;
}

.btn-load-more:hover {
    background: #4b3aa7;
}

.btn-load-more:active {
    background: #3d2f8a;
}

.btn-load-more:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.detail-layout {
    display: grid;
    gap: 20px;
    grid-template-columns: minmax(0, 1fr) 320px;
}

.entry-content {
    margin-top: 20px;
}

.entry-content h2 {
    font-size: 32px;
    margin-top: 30px;
}

.entry-content h3 {
    font-size: 26px;
    margin-top: 24px;
}

.toc-title,
.side-title,
.related-title,
.footer-title,
.error-cats-title {
    margin: 0 0 12px;
    font-weight: 600;
    color: var(--gp-title);
}

#toc-list,
.side-block ul,
.error-cats {
    list-style: none;
    margin: 0;
    padding: 0;
}

#toc-list li,
.side-block li,
.error-cats li {
    padding: 8px 0;
    border-bottom: 1px solid var(--gp-line);
}

#toc-list li:last-child,
.side-block li:last-child,
.error-cats li:last-child {
    border-bottom: 0;
}

.faq-panel {
    margin-top: 28px;
}

.faq-item {
    border-top: 1px solid var(--gp-line);
    padding: 14px 0;
}

.faq-item h3 {
    margin: 0;
    font-size: 23px;
}

.faq-toggle {
    width: 100%;
    border: 0;
    background: transparent;
    text-align: left;
    color: var(--gp-title);
    font-size: inherit;
    font-weight: 600;
    cursor: pointer;
    padding: 0;
}

.faq-answer {
    margin-top: 10px;
}

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

.related-item a {
    display: block;
}

.related-item img {
    border-radius: 4px;
    margin-bottom: 8px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.related-item span {
    color: var(--gp-title);
    font-weight: 500;
}

.page-content h2 {
    margin-top: 28px;
    font-size: 32px;
}

.site-footer {
    background: #ffffff;
    border-top: 1px solid var(--gp-line);
    margin-top: 30px;
}

.footer-columns {
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.footer-col ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.footer-col li {
    margin-bottom: 8px;
}

.copyright-bar {
    margin-top: 20px;
    border-top: 1px solid var(--gp-line);
    padding-top: 16px;
    color: var(--gp-muted);
    font-size: 14px;
}

.error-wrap {
    text-align: center;
}

.error-btn {
    display: inline-block;
    margin: 12px 0 20px;
    background: var(--gp-accent);
    color: #fff;
    padding: 10px 18px;
    border-radius: 4px;
}

.error-btn:hover {
    color: #fff;
    text-decoration: none;
    background: #4b3aa7;
}

@media (max-width: 1024px) {
    .with-right-nav {
        flex-direction: column;
    }

    .with-right-nav .content-area,
    .page-side-nav {
        width: 100%;
        flex-basis: auto;
    }

    .page-side-nav .side-block {
        position: static;
    }

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

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

@media (max-width: 768px) {
    body {
        font-size: 16px;
    }

    h1 {
        font-size: 33px;
    }

    h2 {
        font-size: 28px;
    }

    h3 {
        font-size: 24px;
    }

    .inside-header {
        flex-wrap: wrap;
    }

    .site-logo img {
        height: 44px;
        max-width: 72vw;
    }

    .mobile-menu-control-wrapper {
        display: block;
    }

    #site-navigation {
        width: 100%;
        margin-top: 12px;
        display: none;
    }

    #site-navigation.toggled {
        display: block;
    }

    .main-nav > ul {
        flex-direction: column;
        gap: 0;
    }

    .main-nav > ul > li > a {
        border-bottom: 1px solid var(--gp-line);
        border-radius: 0;
    }

    .site.grid-container {
        padding: 0 12px;
    }

    .page-header,
    .inside-article,
    .paging-navigation,
    .toc-shell,
    .side-block,
    .related-block,
    .error-wrap {
        padding: 20px;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .footer-columns {
        grid-template-columns: 1fr;
    }
}