/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #4a4a4a;
    --accent-color: #8b7355;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-light: #6a6a6a;
    --bg-primary: #fafafa;
    --bg-secondary: #f5f5f5;
    --bg-alt: #e8e8e8;
    --border-color: #d0d0d0;
    --khaki: #8b7355;
    --khaki-light: #c9b89a;
}

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    line-height: 1.8;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 19px;  /* 从 18px 继续增加到 19px */
}

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

/* 通用链接样式 */
a {
    color: var(--text-secondary);
    text-decoration: underline;
    text-decoration-color: var(--border-color);
    text-underline-offset: 2px;
    transition: color 0.3s ease, text-decoration-color 0.3s ease;
}

a:hover {
    color: var(--khaki);
    text-decoration-color: var(--khaki);
}

a:visited {
    color: var(--text-light);
}

/* 内容区域中的链接（如描述文字中的链接） */
.timeline-description a,
.experience-description a,
.project-description a,
.talk-description a,
p a {
    color: var(--khaki);
    font-weight: 500;
    text-decoration-color: var(--khaki-light);
}

.timeline-description a:hover,
.experience-description a:hover,
.project-description a:hover,
.talk-description a:hover,
p a:hover {
    color: var(--text-primary);
    text-decoration-color: var(--text-primary);
}

/* 列表样式 */
ul, ol {
    margin: 0.75rem 0;
    padding-left: 1.8rem;
}

ul {
    list-style-type: disc;
}

ol {
    list-style-type: decimal;
}

li {
    margin: 0.5rem 0;
    line-height: 1.75;
    color: var(--text-primary);
}

li::marker {
    color: var(--khaki);
    font-weight: 600;
}

/* 嵌套列表 */
ul ul, ol ul {
    margin: 0.3rem 0;
    padding-left: 1.5rem;
}

ul ul li, ol ul li {
    margin: 0.3rem 0;
}

ul ul li::marker {
    color: var(--text-secondary);
    font-weight: normal;
}

/* 描述区域内的列表特殊样式 */
.timeline-description ul,
.timeline-description ol,
.experience-description ul,
.experience-description ol,
.project-description ul,
.project-description ol,
.talk-description ul,
.talk-description ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.timeline-description li,
.experience-description li,
.project-description li,
.talk-description li {
    margin: 0.75rem 0;
    line-height: 1.8;
    font-size: 1.02rem;
}

/* 列表内的链接 */
li a {
    color: var(--khaki);
    font-weight: 500;
    text-decoration-color: var(--khaki-light);
}

li a:hover {
    color: var(--text-primary);
    text-decoration-color: var(--text-primary);
}

/* Navigation */
.navbar {
    background-color: var(--bg-primary);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--text-primary);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
}

.nav-brand {
    font-size: 1.1rem;
    font-weight: normal;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: 0.05em;
}

.nav-brand:hover {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: normal;
    font-size: 0.95rem;
    letter-spacing: 0.03em;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

.nav-link.active {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

/* Hero Section */
.hero {
    padding: 4rem 0 3rem 0;  /* 从 5rem 0 4rem 0 减少到 4rem 0 3rem 0 */
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.hero-content {
    max-width: 850px;  /* 从 800px 增加到 850px */
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 3rem;
}

.hero-image {
    flex-shrink: 0;
}

.hero-image img {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border-color);
}

.hero-text {
    flex: 1;
}

.hero-title {
    font-size: 2.8rem;       /* 从 2.5rem 增加到 2.8rem */
    font-weight: normal;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: 0.02em;
}

.hero-subtitle {
    font-size: 1.2rem;       /* 从 1.1rem 增加到 1.2rem */
    margin-bottom: 2rem;
    color: var(--text-secondary);
    font-style: italic;
    font-weight: normal;
}

.hero-description {
    font-size: 1.05rem;      /* 从 1rem 增加到 1.05rem */
    line-height: 1.9;
    margin-bottom: 2.5rem;
    color: var(--text-primary);
    font-family: 'Georgia', serif;
}

/* Social Links */
.social-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* Section Styles */
.section {
    padding: 2.5rem 0;  /* 从 4rem 减少到 2.5rem */
    max-width: 850px;   /* 从 800px 增加到 850px 以容纳更大文字 */
    margin: 0 auto;
}

.section-alt {
    background-color: var(--bg-primary);
}

.section-title {
    font-size: 2.2rem;  /* 从 2rem 增加到 2.2rem */
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
    border-bottom: 2px solid var(--text-primary);
    padding-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

/* Timeline (Education) */
.timeline {
    position: relative;
}

.timeline::before {
    display: none;
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;       /* 从 2.5rem 减少到 2rem */
    padding-bottom: 1.25rem;   /* 从 1.5rem 减少到 1.25rem */
    border-bottom: 1px solid var(--border-color);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-marker {
    display: none;
}

.timeline-content {
    background-color: transparent;
    padding: 0;
}

.timeline-header {
    display: block;
    margin-bottom: 0.5rem;    /* 从 0.75rem 减少到 0.5rem */
}

.timeline-header h3 {
    font-size: 1.4rem;        /* 从 1.3rem 增加到 1.4rem */
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.timeline-date {
    color: var(--accent-color);
    font-weight: 500;
    font-size: 1rem;          /* 从 0.95rem 增加到 1rem */
    font-style: italic;
}

.timeline-location {
    font-weight: 600;         /* 从 500 增加到 600，更突出学校名称 */
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 1.05rem;       /* 从 1rem 增加到 1.05rem */
}

.timeline-description {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;       /* 从 1rem 增加到 1.05rem */
}

/* Experience Grid */
.experience-grid {
    display: block;
}

.experience-card {
    background-color: transparent;
    padding: 0 0 1.25rem 0;    /* 从 1.5rem 减少到 1.25rem */
    margin-bottom: 1.75rem;    /* 从 2rem 减少到 1.75rem */
    border-bottom: 1px solid var(--border-color);
}

.experience-card:last-child {
    border-bottom: none;
}

.experience-icon {
    display: none;
}

.experience-card h3 {
    font-size: 1.4rem;         /* 从 1.3rem 增加到 1.4rem */
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    font-weight: 600;
}

.experience-company {
    font-weight: 700;          /* 从 600 增加到 700，更突出公司名称 */
    color: var(--accent-color);
    margin-bottom: 0.25rem;
    font-size: 1.1rem;         /* 从 1.05rem 增加到 1.1rem */
}

.experience-date {
    color: var(--accent-color);
    font-size: 1rem;           /* 从 0.95rem 增加到 1rem */
    margin-bottom: 0.75rem;
    font-style: italic;
}

.experience-description {
    color: var(--text-secondary);
    line-height: 1.9;          /* 从 1.8 增加到 1.9 */
    font-size: 1.05rem;        /* 从 1rem 增加到 1.05rem */
}

/* 加强 description 中的关键信息 */
.experience-description strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* Projects Grid */
.projects-grid {
    display: block;
}

.project-card {
    background-color: transparent;
    padding: 0 0 1.25rem 0;    /* 从 1.5rem 减少到 1.25rem */
    margin-bottom: 1.75rem;    /* 从 2rem 减少到 1.75rem */
    border-bottom: 1px solid var(--border-color);
}

.project-card:last-child {
    border-bottom: none;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.5rem;
}

.project-title-row {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.project-header h3 {
    font-size: 1.4rem;         /* 从 1.3rem 增加到 1.4rem */
    color: var(--text-primary);
    font-weight: 600;
}

/* GitHub Stars 样式 */
.project-stars {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--khaki);
    font-size: 0.95rem;
    font-weight: 500;
    white-space: nowrap;
}

.project-stars i {
    font-size: 0.85rem;
    color: var(--khaki);
}

.stars-count {
    color: var(--text-secondary);
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--text-light);
    font-size: 1.1rem;         /* 从 1rem 增加到 1.1rem */
    transition: color 0.3s ease, transform 0.2s ease;
    text-decoration: none;
}

.project-link:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* GitHub 链接样式 */
.github-link:hover {
    color: var(--text-primary);
}

/* Demo 链接样式 - 使用卡其色区分 */
.demo-link {
    color: var(--khaki);
}

.demo-link:hover {
    color: var(--text-primary);
}

.project-tags {
    display: inline;
    margin-bottom: 0.5rem;
}

.tag {
    background-color: transparent;
    color: var(--text-light);
    padding: 0;
    border-radius: 0;
    font-size: 0.9rem;         /* 从 0.85rem 增加到 0.9rem */
    font-weight: normal;
    font-style: italic;
}

.tag::after {
    content: ', ';
}

.tag:last-child::after {
    content: '';
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;        /* 从 1rem 增加到 1.05rem */
    margin-top: 0.5rem;
}

/* Publications */
.publications-list {
    margin: 0;
}

.publication-item {
    background-color: transparent;
    padding: 0 0 1.25rem 0;    /* 从 1.5rem 减少到 1.25rem */
    margin-bottom: 1.75rem;    /* 从 2rem 减少到 1.75rem */
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.publication-item:last-child {
    border-bottom: none;
}

/* 论文图片 */
.publication-image {
    flex-shrink: 0;
    width: 280px;
    max-width: 35%;
}

.publication-image img {
    width: 100%;
    height: auto;
    display: block;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.publication-image img:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* 论文内容 */
.publication-content {
    flex: 1;
    min-width: 0; /* 防止 flex 项溢出 */
}

.publication-title {
    font-size: 1.25rem;        /* 从 1.15rem 增加到 1.25rem */
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.6;
    font-weight: 600;
}

.publication-authors {
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    font-size: 1.05rem;        /* 从 1rem 增加到 1.05rem */
}

.publication-venue {
    color: var(--accent-color); /* 从 text-light 改为 accent-color，突出会议/期刊 */
    font-weight: 500;          /* 从 normal 改为 500 */
    margin-bottom: 0.75rem;
    font-size: 0.95rem;        /* 从 0.9rem 增加到 0.95rem */
    font-style: italic;
}

.publication-venue i {
    display: none;
}

.publication-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0;
    background-color: transparent;
    color: var(--text-secondary);
    text-decoration: underline;
    text-decoration-color: var(--border-color);
    text-underline-offset: 2px;
    border-radius: 0;
    font-weight: normal;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: color 0.3s ease, text-decoration-color 0.3s ease;
}

.btn:hover {
    background-color: transparent;
    color: var(--khaki);
    text-decoration-color: var(--khaki);
    transform: none;
    box-shadow: none;
}

.btn:visited {
    color: var(--text-light);
}

.btn-small {
    padding: 0;
    font-size: 0.98rem;
}

.btn i {
    font-size: 0.92rem;
    color: var(--text-light);
    transition: color 0.3s ease;
}

.btn:hover i {
    color: var(--khaki);
}

/* Awards Grid */
.awards-grid {
    display: block;
}

.award-card {
    background-color: transparent;
    padding: 0 0 1rem 0;
    margin-bottom: 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.award-card:last-child {
    border-bottom: none;
}

.award-icon {
    display: none;
}

.award-card h3 {
    font-size: 1.2rem;         /* 从 1.1rem 增加到 1.2rem */
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-weight: 600;          /* 从 normal 改为 600，加粗奖项名称 */
}

.award-venue {
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    font-size: 1rem;           /* 从 0.95rem 增加到 1rem */
}

.award-date {
    color: var(--accent-color); /* 从 text-light 改为 accent-color */
    font-weight: 500;          /* 从 normal 改为 500 */
    font-size: 0.95rem;        /* 从 0.9rem 增加到 0.95rem */
    font-style: italic;
}

/* Talks */
.talks-list {
    margin: 0;
}

.talk-item {
    background-color: transparent;
    padding: 0 0 1.25rem 0;    /* 从 1.5rem 减少到 1.25rem */
    margin-bottom: 1.75rem;    /* 从 2rem 减少到 1.75rem */
    display: block;
    border-bottom: 1px solid var(--border-color);
}

.talk-item:last-child {
    border-bottom: none;
}

.talk-content {
    margin-bottom: 0.75rem;
}

.talk-title {
    font-size: 1.25rem;        /* 从 1.1rem 增加到 1.25rem */
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-weight: 600;          /* 从 normal 改为 600，加粗演讲标题 */
}

.talk-title i {
    display: none;
}

.talk-venue {
    color: var(--text-secondary);
    font-weight: 500;          /* 从 normal 改为 500 */
    margin-bottom: 0.25rem;
    font-size: 1rem;           /* 从 0.95rem 增加到 1rem */
}

.talk-date {
    color: var(--accent-color); /* 从 text-light 改为 accent-color */
    font-size: 0.95rem;        /* 从 0.9rem 增加到 0.95rem */
    margin-bottom: 0.5rem;
    font-style: italic;
}

.talk-description {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1rem;           /* 从 0.95rem 增加到 1rem */
    margin-bottom: 0.75rem;
}

.talk-links {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    align-items: flex-start;
}

/* Blog Grid */
.blog-grid {
    display: block;
}

.blog-card {
    background-color: transparent;
    padding: 0 0 1.25rem 0;    /* 从 1.5rem 减少到 1.25rem */
    margin-bottom: 1.75rem;    /* 从 2rem 减少到 1.75rem */
    border-bottom: 1px solid var(--border-color);
}

.blog-card:last-child {
    border-bottom: none;
}

.blog-date {
    color: var(--accent-color); /* 从 text-light 改为 accent-color */
    font-size: 0.95rem;        /* 从 0.9rem 增加到 0.95rem */
    font-weight: 500;          /* 从 normal 改为 500 */
    margin-bottom: 0.25rem;
    font-style: italic;
}

.blog-title {
    font-size: 1.25rem;        /* 从 1.1rem 增加到 1.25rem */
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;          /* 从 normal 改为 600，加粗博客标题 */
}

.blog-excerpt {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.75rem;
    font-size: 1rem;           /* 从 0.95rem 增加到 1rem */
}

.blog-link {
    color: var(--accent-color);
    text-decoration: underline;
    font-weight: normal;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.95rem;        /* 从 0.9rem 增加到 0.95rem */
}

.blog-link:hover {
    color: var(--text-primary);
}

.blog-link i {
    font-size: 0.8rem;         /* 从 0.75rem 增加到 0.8rem */
}

/* Writings Page Styles */
.writings-hero {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 5rem 0 3rem 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.writings-hero-title {
    font-size: 2.5rem;
    font-weight: normal;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.writings-hero-subtitle {
    font-size: 1.05rem;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.9;
    color: var(--text-secondary);
}

.writings-filter {
    padding: 2rem 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

/* Search Box Styles */
.search-container {
    max-width: 700px;
    margin: 0 auto 2rem auto;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    margin-bottom: 0.75rem;
}

.search-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-light);
    font-size: 1rem;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 0.85rem 3rem 0.85rem 3rem;
    font-family: 'Georgia', serif;
    font-size: 1rem;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0;
    outline: none;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.search-input::placeholder {
    color: var(--text-light);
    font-style: italic;
}

.search-input:focus {
    border-color: var(--khaki);
    background-color: var(--bg-primary);
}

.clear-search {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1rem;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

.clear-search:hover {
    color: var(--text-primary);
}

.search-results-info {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-style: italic;
    min-height: 1.5rem;
}

.search-results-info.highlight {
    color: var(--khaki);
    font-weight: 500;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0;
    background-color: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: 0;
    font-weight: normal;
    cursor: pointer;
    font-family: 'Georgia', serif;
    font-size: 1rem;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: transparent;
    color: var(--accent-color);
    border: none;
    transform: none;
}

.filter-btn.active {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

.filter-btn i {
    display: none;
}

.writings-content {
    padding: 4rem 0;
}

.writings-grid {
    display: block;
    max-width: 800px;
    margin: 0 auto;
}

.writing-card {
    background-color: transparent;
    border-radius: 0;
    box-shadow: none;
    padding: 0 0 1.5rem 0;
    margin-bottom: 2.5rem;
    display: block;
    border-bottom: 1px solid var(--border-color);
}

.writing-card:last-child {
    border-bottom: none;
}

.writing-card.hidden {
    display: none;
}

.writing-card-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.5rem;
}

.writing-category {
    display: inline;
    padding: 0;
    border-radius: 0;
    font-size: 0.9rem;
    font-weight: normal;
    background-color: transparent;
}

.writing-category.technical {
    background-color: transparent;
    color: var(--accent-color);
    font-weight: 600;
}

.writing-category.essays {
    background-color: transparent;
    color: var(--text-light);
}

.writing-category.fiction {
    background-color: transparent;
    color: var(--text-light);
}

.writing-category.philosophy {
    background-color: transparent;
    color: var(--text-light);
}

.writing-category i {
    display: none;
}

.writing-date {
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
}

.writing-card-title {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.5;
    font-weight: normal;
}

/* 文章标题链接样式 */
.writing-card-title a {
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.writing-card-title a:hover {
    color: var(--khaki);
    border-color: var(--khaki);
}

.writing-card-title a:visited {
    color: var(--text-secondary);
}

.writing-card-excerpt {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

/* 摘要中的链接 */
.writing-card-excerpt a {
    color: var(--khaki);
    font-weight: 500;
    text-decoration-color: var(--khaki-light);
}

.writing-card-excerpt a:hover {
    color: var(--text-primary);
    text-decoration-color: var(--text-primary);
}

.writing-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0;
    border-top: none;
}

.reading-time {
    color: var(--text-light);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.reading-time i {
    font-size: 0.8rem;
}

.read-more-link {
    color: var(--khaki);
    text-decoration: underline;
    text-decoration-color: var(--khaki-light);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.95rem;
    transition: color 0.3s ease, text-decoration-color 0.3s ease;
}

.read-more-link:hover {
    color: var(--text-primary);
    text-decoration-color: var(--text-primary);
}

.read-more-link:visited {
    color: var(--text-secondary);
}

.read-more-link i {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.read-more-link:hover i {
    transform: translateX(3px);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--text-primary);
    cursor: pointer;
    font-family: 'Georgia', serif;
    font-size: 1rem;
    transition: all 0.3s;
}

.pagination-btn:hover:not(:disabled) {
    background-color: var(--text-primary);
    color: var(--bg-primary);
}

.pagination-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    border-color: var(--text-light);
    color: var(--text-light);
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 1rem;
}

#current-page {
    font-weight: 600;
    color: var(--text-primary);
}

/* Footer */
.footer {
    background-color: var(--bg-primary);
    color: var(--text-light);
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;          /* 从 4rem 减少到 3rem */
    border-top: 2px solid var(--text-primary);
}

.footer p {
    margin: 0.25rem 0;
    font-size: 0.95rem;        /* 从 0.9rem 增加到 0.95rem */
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        font-size: 15px;
    }

    .container {
        padding: 0 15px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .hero-image img {
        width: 150px;
        height: 150px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .social-links {
        justify-content: center;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section {
        padding: 3rem 0;
    }

    /* 在移动设备上，论文图片和内容垂直堆叠 */
    .publication-item {
        flex-direction: column;
    }

    .publication-image {
        width: 100%;
        max-width: 100%;
    }

    .writings-hero-title {
        font-size: 2rem;
    }

    .writings-hero-subtitle {
        font-size: 1rem;
    }

    /* 移动端项目标题和 stars 布局 */
    .project-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .project-title-row {
        flex-wrap: wrap;
        width: 100%;
    }

    .project-stars {
        font-size: 0.9rem;
    }

    .project-links {
        margin-top: 0.25rem;
    }

    .filter-buttons {
        gap: 1.5rem;
    }
    
    .pagination {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pagination-btn {
        width: 100%;
        justify-content: center;
    }
    
    /* 移动端搜索框样式 */
    .search-container {
        margin-bottom: 1.5rem;
    }
    
    .search-input {
        font-size: 0.95rem;
        padding: 0.75rem 2.5rem 0.75rem 2.5rem;
    }
    
    .search-icon {
        left: 0.75rem;
        font-size: 0.9rem;
    }
    
    .clear-search {
        right: 0.75rem;
        font-size: 0.9rem;
    }
    
    .search-results-info {
        font-size: 0.85rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background-color: var(--khaki-light);
    color: var(--text-primary);
}