/* 
 * Chenxi 个人博客网站 - 企业风格样式
 * 作者: Chenxi
 * 版本: 1.0
 */

/* 基础重置和通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主要颜色变量 */
    --primary-color: #4a4e69;        /* 主色调 - 专业蓝 */
    --primary-dark: #1d4ed8;         /* 主色深色版本 */
    --primary-light: #3b82f6;        /* 主色浅色版本 */
    --secondary-color: #6d597a;      /* 次要色调 - 深蓝灰 */
    --accent-color: #9a8c98;         /* 强调色 - 亮蓝 */
    --text-dark: #2c2d34;            /* 主要文本颜色 */
    --text-light: #f9f9f9;           /* 次要文本颜色 */
    --text-muted: #94a3b8;           /* 弱化文本颜色 */
    --bg-light: #ffffff;             /* 背景色-亮 */
    --bg-off-white: #f8fafc;         /* 背景色-灰白 */
    --bg-gray: #f1f5f9;              /* 背景色-灰 */
    --border-color: #e2e8f0;         /* 边框颜色 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --transition: all 0.3s ease;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 15px 35px rgba(0, 0, 0, 0.15);
    --shadow-hard: 0 20px 40px rgba(0, 0, 0, 0.2);
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);

    /* 字体 */
    --font-sans: 'SF Pro Display', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    --font-serif: 'Georgia', 'Times New Roman', serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

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

a:hover {
    color: var(--primary-dark);
}

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

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 排版 */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1.5rem;
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-dark);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1.5rem;
}

.section-title {
    position: relative;
    display: inline-block;
    margin-bottom: 2.5rem;
    padding-bottom: 0.5rem;
    font-weight: 700;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    color: white;
    background-color: var(--primary-color);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    background-color: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 头部 */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: white;
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    font-weight: 500;
    color: var(--text-dark);
    padding: 0.5rem 0;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

nav a:hover::after,
nav a.active::after {
    width: 100%;
}

nav a.active {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
}

/* 页面标题区 */
.page-header {
    background-color: var(--bg-off-white);
    padding: 5rem 0;
    text-align: center;
}

.page-header h1 {
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* 首页英雄区 */
.hero {
    background-color: var(--bg-gray);
    padding: 5rem 0;
    background-image: linear-gradient(to right, rgba(37, 99, 235, 0.1), rgba(59, 130, 246, 0.05));
}

.hero-content {
    max-width: 700px;
    padding-right: 2rem;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--text-light);
}

/* 特色文章区 */
.featured-posts {
    padding: 5rem 0;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.post-card {
    background-color: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.post-image {
    height: 200px;
    overflow: hidden;
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.post-card:hover .post-image img {
    transform: scale(1.05);
}

.post-content {
    padding: 1.5rem;
}

.post-date {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.post-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.post-excerpt {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

.read-more {
    font-weight: 500;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
}

.read-more:hover {
    color: var(--primary-dark);
}

.view-all {
    text-align: center;
}

/* 文章页面 */
.articles {
    padding: 5rem 0;
}

.article-filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.search-box {
    display: flex;
    align-items: center;
    max-width: 400px;
    width: 100%;
}

.search-box input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    font-size: 1rem;
}

.search-box button {
    padding: 0.75rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    cursor: pointer;
}

.category-filter select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background-color: white;
    min-width: 180px;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.article-card {
    display: flex;
    flex-direction: column;
    background-color: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.article-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.article-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-date {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.article-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.article-excerpt {
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    flex: 1;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
}

.pagination a.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination a:hover:not(.active) {
    background-color: var(--bg-gray);
}

.pagination a.next {
    width: auto;
    padding: 0 1rem;
}

.pagination a.next i {
    margin-left: 0.5rem;
}

/* 项目页面 */
.projects {
    padding: 5rem 0;
}

.project-filters {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, 
.filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-slow);
}

.project-card:hover {
    box-shadow: var(--shadow-hard);
}

.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(74, 78, 105, 0.2) 0%,
        rgba(109, 89, 122, 0.2) 100%
    );
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.project-card:hover::after {
    opacity: 1;
}

.project-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(37, 99, 235, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.view-project {
    padding: 0.75rem 1.5rem;
    background-color: white;
    color: var(--primary-color);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: var(--transition);
}

.view-project:hover {
    background-color: var(--primary-dark);
    color: white;
}

.project-link, 
.github-link {
    width: 2.5rem;
    height: 2.5rem;
    background-color: white;
    color: var(--primary-color);
    border-radius: 50%;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.project-link:hover, 
.github-link:hover {
    background-color: var(--primary-dark);
    color: white;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.project-info p {
    color: var(--text-dark);
    margin-bottom: 1.25rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tags span {
    padding: 0.25rem 0.75rem;
    background-color: var(--bg-gray);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

/* 关于我页面 */
.about-me {
    padding: 5rem 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.intro {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.skills {
    margin-top: 2.5rem;
}

.skills h3 {
    margin-bottom: 1.5rem;
}

.skill-bars {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.skill {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.skill-name {
    font-weight: 500;
}

.skill-bar {
    height: 8px;
    background-color: var(--bg-gray);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.skill-level {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: var(--radius-sm);
}

/* 经历部分 */
.experience {
    padding: 5rem 0;
    background-color: var(--bg-off-white);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -2.5rem;
    top: 0;
    width: 1rem;
    height: 1rem;
    background-color: var(--primary-color);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: var(--shadow-sm);
}

.timeline-date {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--primary-light);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.timeline-content {
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
}

.position {
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

/* 推荐部分 */
.testimonials {
    padding: 5rem 0;
}

.testimonial-slider {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial {
    background-color: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.testimonial:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.testimonial-content {
    padding: 2rem;
    position: relative;
}

.testimonial-content::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 1.5rem;
    font-size: 5rem;
    line-height: 1;
    color: var(--primary-light);
    opacity: 0.2;
    font-family: var(--font-serif);
}

.testimonial-content p {
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-off-white);
}

.testimonial-author img {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid white;
    box-shadow: var(--shadow-sm);
    margin-right: 1rem;
}

.author-info h4 {
    margin-bottom: 0.25rem;
}

.author-info p {
    color: var(--text-dark);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* CTA部分 */
.cta {
    padding: 5rem 0;
    background-color: var(--primary-color);
    color: white;
    text-align: center;
}

.cta h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

.cta .btn {
    background-color: white;
    color: var(--primary-color);
}

.cta .btn:hover {
    background-color: var(--bg-off-white);
    color: var(--primary-dark);
}

/* 联系部分 */
.contact {
    padding: 5rem 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
}

.contact-info {
    background-color: var(--primary-color);
    color: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    height: fit-content;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.contact-item i {
    font-size: 1.5rem;
    margin-right: 1rem;
    margin-top: 0.25rem;
}

.contact-item h3 {
    color: white;
    margin-bottom: 0.5rem;
}

.contact-item p {
    margin-bottom: 0;
    opacity: 0.9;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    width: 2.5rem;
    height: 2.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: white;
    color: var(--primary-color);
    transform: translateY(-3px);
}

.contact-form {
    padding: 2.5rem;
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

/* 订阅区域 */
.newsletter {
    padding: 5rem 0;
    background-color: var(--bg-gray);
    text-align: center;
}

.newsletter h2 {
    margin-bottom: 1rem;
}

.newsletter p {
    max-width: 600px;
    margin: 0 auto 2rem;
    color: var(--text-light);
}

.newsletter form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    font-size: 1rem;
    box-shadow: var(--shadow-sm);
}

.newsletter .btn {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    box-shadow: var(--shadow-sm);
}

/* 页脚 */
footer {
    padding-top: 5rem;
    background-color: var(--text-dark);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    padding-bottom: 3rem;
}

.footer-logo h2 {
    color: white;
    margin-bottom: 1rem;
}

.footer-logo p {
    margin-bottom: 0;
    opacity: 0.8;
}

.footer-links h3 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 0.25rem;
}

.footer-social h3 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 2.5rem;
    height: 2.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    padding: 1.5rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    margin-bottom: 0;
    opacity: 0.7;
    font-size: 0.875rem;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    html {
        font-size: 15px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: white;
        flex-direction: column;
        padding: 5rem 2rem;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: 0.5s;
        z-index: 1001;
    }
    
    nav.active {
        right: 0;
    }
    
    nav ul {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .page-header {
        padding: 4rem 0;
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .testimonial-slider {
        grid-template-columns: 1fr;
    }
    
    .newsletter form {
        flex-direction: column;
    }
    
    .newsletter input,
    .newsletter .btn {
        border-radius: var(--radius-md);
    }
    
    .newsletter .btn {
        margin-top: 1rem;
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }
    
    .posts-grid,
    .articles-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .article-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box,
    .category-filter {
        width: 100%;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}

/* 添加全局高级样式效果 */
:root {
    --primary-color: #4a4e69;
    --secondary-color: #6d597a;
    --accent-color: #9a8c98;
    --text-dark: #2c2d34;
    --text-light: #f9f9f9;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 15px 35px rgba(0, 0, 0, 0.15);
    --shadow-hard: 0 20px 40px rgba(0, 0, 0, 0.2);
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* 全局平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 文本选择样式 */
::selection {
    background-color: var(--secondary-color);
    color: white;
}

/* 进度条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 文本渐变效果 */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* 图像悬停效果 */
.hover-zoom {
    overflow: hidden;
}

.hover-zoom img {
    transition: transform var(--transition-medium);
}

.hover-zoom:hover img {
    transform: scale(1.1);
}

/* 卡片悬停效果 */
.hover-lift {
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium);
}

/* 按钮动画效果 */
.animated-btn {
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: color var(--transition-fast);
}

.animated-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--secondary-color);
    transition: height var(--transition-fast);
    z-index: -1;
}

.animated-btn:hover {
    color: white;
}

.animated-btn:hover::before {
    height: 100%;
}

/* 高级图像样式 */
.image-frame {
    position: relative;
    padding: 10px;
}

.image-frame::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent-color);
    transform: translate(10px, 10px);
    z-index: -1;
    transition: transform var(--transition-fast);
}

.image-frame:hover::before {
    transform: translate(5px, 5px);
}

/* 卡片立体效果 */
.card-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform var(--transition-medium);
}

.card-3d:hover {
    transform: rotateX(5deg) rotateY(5deg);
}

/* 项目展示卡片增强效果 */
.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-slow);
}

.project-card:hover {
    box-shadow: var(--shadow-hard);
}

.project-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(74, 78, 105, 0.2) 0%,
        rgba(109, 89, 122, 0.2) 100%
    );
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.project-card:hover::after {
    opacity: 1;
}

/* 导航强调效果 */
nav ul li a {
    position: relative;
    transition: color var(--transition-fast);
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: width var(--transition-fast);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

/* 响应式图片和视频容器 */
.responsive-media {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
}

.responsive-media iframe,
.responsive-media video,
.responsive-media img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 加载动画 */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.loading {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%, 
        #e0e0e0 50%, 
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}