:root {
    --color-background: #f7f4ee;
    --color-surface: #fffdf8;
    --color-ink: #17212c;
    --color-muted: #5b6470;
    --color-border: #cfd5dc;
    --color-border-strong: #8c98a5;
    --color-accent: #7a2328;
    --color-accent-dark: #24394f;
    --font-body: Inter, "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
    --font-heading: "EB Garamond", "Songti SC", "STSong", "SimSun", serif;
    --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
    --page-width: min(1120px, calc(100vw - 32px));
    --content-width: min(760px, 100%);
    --transition-fast: 180ms ease;
}

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

* {
    margin: 0;
}

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1.6rem;
    line-height: 1.75;
    color: var(--color-ink);
    background: var(--color-background);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.nav-open {
    overflow: hidden;
}

img,
svg,
picture,
video,
canvas {
    display: block;
    max-width: 100%;
    height: auto;
}

button,
input,
textarea,
select {
    font: inherit;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast), opacity var(--transition-fast), border-color var(--transition-fast);
}

a:hover {
    color: var(--color-accent);
}

p,
h1,
h2,
h3,
h4,
h5,
h6,
li,
blockquote {
    overflow-wrap: break-word;
}

h1,
h2,
h3,
h4,
h5,
h6,
.is-title {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: 0.01em;
}

.gh-outer {
    width: 100%;
}

.gh-inner {
    width: var(--page-width);
    margin: 0 auto;
}

.gh-main {
    padding-bottom: 8rem;
}

.section-eyebrow,
.section-index,
.record-label,
.archive-context,
.gh-footer-meta,
.record-date,
.topic-meta {
    font-family: var(--font-body);
    font-size: 1.25rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.section-eyebrow,
.archive-context,
.gh-footer-meta {
    letter-spacing: 0.16em;
}

.gh-navigation {
    position: sticky;
    top: 0;
    z-index: 30;
    background: rgb(247 244 238 / 0.96);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(14px);
}

.gh-navigation-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(220px, 320px);
    gap: 2.4rem;
    align-items: center;
    min-height: 9.2rem;
}

.gh-navigation-brand {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.6rem;
}

.gh-navigation-logo {
    display: inline-flex;
    align-items: center;
    gap: 1.4rem;
    min-width: 0;
}

.gh-navigation-logo img {
    width: 4.6rem;
    height: 4.6rem;
    object-fit: contain;
}

.gh-navigation-title {
    font-size: 2.9rem;
}

.gh-navigation-menu .nav,
.gh-footer-menu .nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1.8rem;
    align-items: center;
    list-style: none;
    padding: 0;
}

.gh-navigation-menu .nav {
    justify-content: center;
}

.gh-navigation-menu .nav a,
.gh-footer-menu .nav a {
    display: inline-flex;
    align-items: center;
    min-height: 4rem;
    border-bottom: 1px solid transparent;
    font-size: 1.5rem;
}

.gh-navigation-search {
    display: flex;
    justify-content: flex-end;
}

.gh-search-box {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    min-height: 4.8rem;
    padding: 0 1.6rem;
    color: var(--color-muted);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.gh-search-box:hover {
    color: var(--color-accent-dark);
    border-color: var(--color-border-strong);
    background: #fff;
}

.gh-search-box-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.8rem;
    height: 1.8rem;
    flex-shrink: 0;
}

.gh-search-box-icon svg {
    width: 1.8rem;
    height: 1.8rem;
}

.gh-search-box-text {
    overflow: hidden;
    font-size: 1.45rem;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.gh-icon-button {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
    width: 4.4rem;
    height: 4.4rem;
    padding: 0;
    background: transparent;
    border: 0;
    cursor: pointer;
}

.gh-icon-button span {
    display: block;
    width: 2.1rem;
    height: 1px;
    margin-left: auto;
    background: var(--color-ink);
}

.home-intro,
.archive-hero,
.article-header,
.article-footer,
.related-section,
.archive-panel,
.gh-footer {
    border-top: 1px solid var(--color-border);
}

.home-intro {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
    gap: 4rem;
    padding: 4.8rem 0 4rem;
}

.home-title,
.archive-title,
.article-title {
    font-size: clamp(3.4rem, 4vw, 5.8rem);
}

.home-description,
.archive-description {
    max-width: 70rem;
    margin-top: 1.6rem;
    font-size: 1.85rem;
    line-height: 1.9;
    color: var(--color-muted);
}

.home-intro-note {
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 2.4rem 0 0;
}

.home-intro-note p {
    max-width: 32rem;
    padding-left: 2.4rem;
    border-left: 1px solid var(--color-border);
    font-size: 1.65rem;
    line-height: 1.9;
    color: var(--color-muted);
}

.home-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4rem 3.2rem;
}

.academic-section,
.topic-section,
.archive-panel-inner,
.related-section,
.gh-footer-inner {
    padding: 3.2rem 0 0;
}

.academic-section-header,
.archive-panel-header,
.gh-footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.6rem;
}

.section-index {
    margin-bottom: 0.6rem;
}

.section-title {
    font-size: 3.1rem;
}

.section-description,
.section-link.is-muted {
    color: var(--color-muted);
}

.section-link,
.archive-pagination-link {
    min-height: 4rem;
    border-bottom: 1px solid currentColor;
    font-size: 1.5rem;
}

.record-list {
    margin-top: 2rem;
}

.record-item {
    border-bottom: 1px solid var(--color-border);
}

.record-link {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2rem;
    align-items: start;
    padding: 1.6rem 0;
}

.record-main {
    min-width: 0;
}

.record-title {
    font-size: 2.2rem;
    line-height: 1.35;
}

.record-meta,
.article-meta,
.article-keywords,
.record-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem 1rem;
    align-items: center;
}

.record-meta {
    margin-top: 0.9rem;
}

.record-label,
.article-keywords a,
.record-keywords span {
    padding: 0.18rem 0.72rem;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    letter-spacing: 0.06em;
    text-transform: none;
}

.record-keywords {
    gap: 0.6rem;
}

.record-keywords span,
.article-keywords a {
    font-size: 1.25rem;
    color: var(--color-muted);
}

.record-date {
    padding-top: 0.5rem;
    white-space: nowrap;
}

.topic-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 2.4rem;
    margin-top: 2rem;
}

.topic-section--full {
    grid-column: 1 / -1;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-top: 2rem;
}

.tag-cloud-link {
    display: inline-flex;
    align-items: center;
    min-height: 4.4rem;
    padding: 0 1.8rem;
    font-family: var(--font-heading);
    font-size: 1.9rem;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-surface);
}

.topic-link {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    align-items: baseline;
    padding: 1.3rem 0;
    border-bottom: 1px solid var(--color-border);
}

.topic-name {
    font-family: var(--font-heading);
    font-size: 2.1rem;
}

.archive-hero {
    padding: 4.6rem 0 0;
}

.archive-context {
    margin-top: 1.4rem;
}

.archive-panel-header {
    padding-bottom: 0.4rem;
}

.archive-pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.6rem;
    padding: 2.8rem 0 0;
}

.archive-pagination-status {
    font-size: 1.45rem;
    color: var(--color-muted);
}

.archive-pagination-link.is-disabled {
    color: var(--color-border-strong);
    border-bottom-color: transparent;
    pointer-events: none;
}

.gh-article {
    padding-top: 4.8rem;
}

.article-header {
    max-width: var(--content-width);
    padding-top: 0;
}

.article-header--page {
    padding-bottom: 1.6rem;
}

.gh-article-image {
    margin-top: 2.8rem;
}

.gh-article-image figcaption {
    margin-top: 1rem;
    font-size: 1.4rem;
    color: var(--color-muted);
}

.article-section-link {
    display: inline-flex;
    margin-bottom: 1.4rem;
    padding-bottom: 0.3rem;
    border-bottom: 1px solid currentColor;
    font-size: 1.45rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent-dark);
}

.article-meta {
    margin-top: 1.8rem;
}

.article-date {
    font-size: 1.4rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-muted);
}

.article-content {
    width: 100%;
    max-width: var(--content-width);
    padding-top: 3.2rem;
    font-size: 1.9rem;
    line-height: 1.95;
}

.article-content > * + * {
    margin-top: 2rem;
}

.article-content > h2,
.article-content > h3,
.article-content > h4 {
    margin-top: 4rem;
}

.gh-content h2 {
    font-size: 3rem;
}

.gh-content h3 {
    font-size: 2.4rem;
}

.gh-content h4 {
    font-size: 2rem;
}

.gh-content a {
    color: var(--color-accent-dark);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.2em;
}

.gh-content ul,
.gh-content ol {
    padding-left: 2.2rem;
}

.gh-content li + li {
    margin-top: 0.8rem;
}

.gh-content blockquote {
    padding-left: 2rem;
    border-left: 3px solid var(--color-accent);
    color: var(--color-muted);
}

.gh-content hr {
    border: 0;
    border-top: 1px solid var(--color-border);
}

.gh-content code,
.gh-content pre {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.gh-content pre {
    padding: 1.6rem;
    overflow-x: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.gh-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1.6rem;
}

.gh-content th,
.gh-content td {
    padding: 1rem 1.2rem;
    border: 1px solid var(--color-border);
    vertical-align: top;
}

.gh-content .kg-card,
.gh-content .kg-image-card,
.gh-content .kg-gallery-card,
.gh-content .kg-embed-card {
    margin-top: 3rem;
}

.gh-content figure img {
    width: 100%;
}

.gh-content .kg-bookmark-card,
.gh-content .kg-callout-card {
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.article-footer {
    max-width: var(--content-width);
    margin-top: 4rem;
    padding-top: 3.2rem;
}

.contact-wechat {
    margin-top: 1.2rem;
    text-align: center;
    font-size: 1.35rem;
    letter-spacing: 0.08em;
    color: var(--color-accent-dark);
}

.contact-qrcode {
    display: grid;
    place-items: center;
    aspect-ratio: 1;
    width: 100%;
    border: 1px dashed var(--color-border-strong);
    background: var(--color-surface);
}

.contact-qrcode img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-qrcode span {
    padding: 1.2rem;
    text-align: center;
    font-size: 1.4rem;
    color: var(--color-muted);
}

.related-section {
    margin-top: 4.8rem;
}

.record-empty {
    padding: 2rem 0 0.4rem;
    color: var(--color-muted);
}

.contact-panel.is-floating {
    position: fixed;
    right: 2.4rem;
    bottom: 2.4rem;
    z-index: 20;
    width: min(240px, calc(100vw - 32px));
}

.contact-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 4.8rem;
    border: 0;
    background: var(--color-accent-dark);
    color: #fff;
    cursor: pointer;
}

.contact-panel.is-floating .contact-card {
    display: none;
    margin-top: 0.8rem;
    padding: 1.6rem;
    background: rgb(255 253 248 / 0.96);
    border: 1px solid var(--color-border);
}

.contact-panel.is-floating.is-open .contact-card {
    display: block;
}

.gh-footer {
    padding: 0 0 4rem;
}

.gh-footer-inner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 2.8rem;
}

.gh-footer-meta {
    font-size: 1.45rem;
    letter-spacing: 0.08em;
    text-transform: none;
    text-align: center;
}

@media (max-width: 1100px) {
    .gh-navigation-inner {
        grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
        gap: 1.4rem;
        padding: 1.4rem 0;
    }

    .gh-navigation-brand {
        grid-column: 1 / -1;
    }

    .home-grid,
    .topic-list,
    .home-intro {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 960px) {
    .gh-navigation-menu {
        display: none;
    }

    .gh-icon-button {
        display: inline-flex;
    }

    .gh-navigation.is-open .gh-navigation-menu {
        display: block;
        padding-bottom: 1rem;
    }

    .gh-navigation-search {
        grid-column: 1 / -1;
        justify-content: stretch;
    }

    .gh-navigation.is-open .gh-navigation-menu .nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
        padding-top: 0.8rem;
    }

    .gh-navigation.is-open .gh-navigation-menu,
    .gh-navigation.is-open .gh-navigation-search {
        display: block;
    }

    .record-link,
    .gh-footer-inner {
        grid-template-columns: 1fr;
        display: grid;
    }

    .record-date {
        padding-top: 0;
    }

    .archive-pagination {
        flex-wrap: wrap;
    }

    .contact-panel.is-floating {
        right: 1.6rem;
        bottom: 1.6rem;
    }

    .gh-footer-inner {
        display: flex;
    }
}

@media (max-width: 640px) {
    .gh-main {
        padding-bottom: 6.4rem;
    }

    .gh-navigation-title {
        font-size: 2.4rem;
    }

    .gh-search-box {
        min-height: 4.4rem;
        padding: 0 1.4rem;
    }

    .home-title,
    .archive-title,
    .article-title {
        font-size: 3.2rem;
    }

    .home-description,
    .archive-description,
    .article-content {
        font-size: 1.7rem;
    }

    .section-title {
        font-size: 2.6rem;
    }

    .record-title {
        font-size: 1.95rem;
    }

    .topic-name {
        font-size: 1.9rem;
    }

    .article-content table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .gh-footer {
        padding-bottom: 8.8rem;
    }
}