/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

:root {
    --sidebar-width: 260px;
    --masthead-height: 50px;
    --color-primary: #52adc8;
    --color-link: #1a0dab;
    --color-text: #222;
    --color-text-light: #666;
    --color-bg: #fff;
    --color-border: #e5e5e5;
    --color-gray-bg: #f5f5f5;
    --font-sans: "Nunito Sans", -apple-system, BlinkMacSystemFont, "Roboto", "Segoe UI", "Helvetica Neue", "Lucida Grande", Arial, sans-serif;
    --font-serif: Georgia, Times, "Times New Roman", serif;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 60px;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: 0.01em;
}

a {
    color: var(--color-link);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
}

/* ===== Masthead / Top Nav ===== */
.masthead {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    height: var(--masthead-height);
}

.masthead__inner-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
}

.greedy-nav {
    display: flex;
    align-items: center;
    height: 100%;
}

.site-title {
    font-size: 18px;
    font-weight: bold;
    color: var(--color-text);
    margin-right: 40px;
    white-space: nowrap;
}

.site-title:hover {
    text-decoration: none;
    color: var(--color-text);
}

.visible-links {
    list-style: none;
    display: flex;
    gap: 0;
    margin: 0;
    padding: 0;
}

.visible-links li a {
    display: block;
    padding: 0 16px;
    line-height: var(--masthead-height);
    font-size: 14px;
    color: var(--color-text);
    font-weight: 400;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
}

.visible-links li a:hover,
.visible-links li a.active {
    text-decoration: none;
    border-bottom-color: var(--color-text);
}

/* ===== Layout: Sidebar + Main ===== */
#main {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: var(--masthead-height);
    min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    padding: 32px 20px 32px 24px;
}

.sidebar.sticky {
    position: sticky;
    top: var(--masthead-height);
    height: calc(100vh - var(--masthead-height));
    overflow-y: auto;
}

.profile-box {
    text-align: center;
}

.author__avatar {
    margin-bottom: 12px;
}

.author__avatar img {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    object-fit: cover;
}

.author__content {
    margin-bottom: 16px;
}

.author__name {
    font-size: 20px;
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: 2px;
}

.chinese__name {
    font-size: 16px;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.author__bio {
    font-size: 14px;
    color: var(--color-text-light);
}

/* Social icons in sidebar */
.author__urls-wrapper {
    text-align: left;
}

.author__urls {
    list-style: none;
    padding: 0;
    margin: 0;
}

.author__urls li {
    font-size: 14px;
    color: var(--color-text-light);
    padding: 4px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.author__urls li i {
    width: 20px;
    text-align: center;
    margin-right: 6px;
    color: var(--color-text-light);
}

.author__urls li a {
    color: var(--color-text);
}

.author__urls li a:hover {
    color: var(--color-link);
}

/* ===== Main Content ===== */
.page {
    flex: 1;
    min-width: 0;
    padding: 32px 24px 64px 40px;
    border-left: 1px solid var(--color-border);
}

.page__content {
    max-width: 780px;
}

.anchor {
    display: block;
    position: relative;
    top: -70px;
    visibility: hidden;
}

/* About section paragraphs */
.page__content > p {
    margin-bottom: 12px;
    font-size: 16px;
    line-height: 1.7;
}

.page__content > p a {
    color: var(--color-link);
}

/* ===== Section Headings ===== */
.page__content h1 {
    font-size: 24px;
    font-weight: bold;
    margin-top: 40px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

.page__content h2 {
    font-size: 18px;
    font-weight: 600;
    margin-top: 28px;
    margin-bottom: 12px;
    color: var(--color-text);
}

/* ===== News List ===== */
.news-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.news-list li {
    position: relative;
    padding: 8px 0 8px 0;
    font-size: 14px;
    line-height: 1.6;
    border-bottom: 1px solid #f0f0f0;
}

.news-list li:last-child {
    border-bottom: none;
}

.news-list a {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 1px dashed var(--color-primary);
}

.news-list a:hover {
    border-bottom-style: solid;
}

.news-date {
    display: inline-block;
    font-weight: bold;
    color: var(--color-text);
    min-width: 72px;
    margin-right: 8px;
}

/* ===== Publication Entries ===== */
.pub-entry {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid #f0f0f0;
}

.pub-entry:last-of-type {
    border-bottom: none;
}

.pub-content {
    flex: 1;
    min-width: 0;
}

.pub-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.5;
    margin-bottom: 4px;
}

.pub-authors {
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.5;
    margin-bottom: 2px;
}

.pub-authors strong {
    color: var(--color-text);
    font-weight: 700;
}

.pub-note {
    font-size: 13px;
    color: var(--color-primary);
    font-style: italic;
    margin-bottom: 2px;
}

.pub-links {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.pub-citation {
    font-size: 12px;
    color: var(--color-text-light);
    background: var(--color-gray-bg);
    padding: 2px 8px;
    border-radius: 3px;
}

.pub-citation i {
    font-size: 10px;
    margin-right: 4px;
    opacity: 0.6;
}

.pub-citation.highlight {
    background: #fff3cd;
    color: #856404;
    font-weight: 600;
}

/* Link buttons */
.pub-link-btn {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    padding: 2px 10px;
    border-radius: 3px;
    background: var(--color-gray-bg);
    color: var(--color-text) !important;
    border: 1px solid var(--color-border);
    text-decoration: none !important;
    transition: background 0.15s, border-color 0.15s;
}

.pub-link-btn:hover {
    background: #e8f4f8;
    border-color: var(--color-primary);
    color: var(--color-primary) !important;
}

.pub-link-btn i {
    margin-right: 4px;
    font-size: 11px;
}

/* Author superscript styling */
.pub-authors sup,
.selected-work-authors sup {
    font-size: 9px;
    color: #e74c3c;
    font-weight: 700;
    margin-left: 0.5px;
}

/* Note mark for annotation explanation */
.note-mark {
    font-size: 13px;
    color: var(--color-text-light);
    margin-top: 8px;
    padding: 8px 12px;
    background: var(--color-gray-bg);
    border-radius: 4px;
    border-left: 3px solid var(--color-primary);
}

.note-mark sup {
    font-size: 10px;
    color: #e74c3c;
    font-weight: 700;
}

/* ===== Footer ===== */
.page__footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-gray-bg);
    padding: 20px 0;
    text-align: center;
}

.page__footer p {
    font-size: 13px;
    color: var(--color-text-light);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    #main {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        position: static;
        height: auto;
        padding: 24px;
        border-bottom: 1px solid var(--color-border);
    }

    .sidebar.sticky {
        position: static;
        height: auto;
    }

    .profile-box {
        display: flex;
        align-items: center;
        gap: 24px;
        text-align: left;
    }

    .author__avatar img {
        width: 100px;
        height: 100px;
    }

    .author__urls-wrapper {
        margin-top: 12px;
    }

    .author__urls {
        display: flex;
        flex-wrap: wrap;
        gap: 0 16px;
    }

    .page {
        border-left: none;
        padding: 24px;
    }

    .selected-work-inner {
        flex-direction: column;
    }

    .selected-work-img {
        width: 100%;
        max-width: 360px;
    }
}

@media (max-width: 600px) {
    .profile-box {
        flex-direction: column;
        text-align: center;
    }

    .author__urls-wrapper {
        text-align: center;
    }

    .author__urls {
        justify-content: center;
    }

    .visible-links li a {
        padding: 0 10px;
        font-size: 13px;
    }

    .site-title {
        font-size: 16px;
        margin-right: 16px;
    }

    .page__content h1 {
        font-size: 20px;
    }
}

/* ===== Selected Works ===== */
.selected-work {
    background: linear-gradient(135deg, #fefefe, #f8fbff);
    border: 1px solid #e0e8f0;
    border-left: 4px solid var(--color-primary);
    border-radius: 6px;
    padding: 20px 24px;
    margin-bottom: 20px;
}

.selected-work-category {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    background: #e8f4f8;
    padding: 2px 10px;
    border-radius: 12px;
    margin-bottom: 12px;
    letter-spacing: 0.3px;
}

.selected-work-inner {
    display: flex;
    gap: 24px;
    align-items: center;
}

.selected-work-img {
    flex-shrink: 0;
    width: 260px;
}

.selected-work-img img {
    width: 100%;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    object-fit: contain;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.selected-work-text {
    flex: 1;
    min-width: 0;
}

.selected-work-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.5;
    margin-bottom: 8px;
}

.venue-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: #fff;
    background: var(--color-primary);
    padding: 1px 8px;
    border-radius: 3px;
    vertical-align: middle;
    margin-left: 6px;
    letter-spacing: 0.3px;
}

.selected-work-authors {
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.5;
    margin-bottom: 6px;
}

.selected-work-authors strong {
    color: var(--color-text);
    font-weight: 700;
}

.selected-work-desc {
    font-size: 14px;
    color: #444;
    line-height: 1.7;
    margin-top: 8px;
    margin-bottom: 10px;
}

/* ===== Visitor Map ===== */
.visitor-map {
    text-align: center;
    padding: 20px 0;
    min-height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}