/* 引入Essay 1743字体 */
@font-face {
    font-family: "Essays 1743";
    src: url("https://db.onlinewebfonts.com/t/1b4f0611f948c6e1df970fcaa6d54ae8.eot");
    src: url("https://db.onlinewebfonts.com/t/1b4f0611f948c6e1df970fcaa6d54ae8.eot?#iefix")format("embedded-opentype"),
         url("https://db.onlinewebfonts.com/t/1b4f0611f948c6e1df970fcaa6d54ae8.woff2")format("woff2"),
         url("https://db.onlinewebfonts.com/t/1b4f0611f948c6e1df970fcaa6d54ae8.woff")format("woff"),
         url("https://db.onlinewebfonts.com/t/1b4f0611f948c6e1df970fcaa6d54ae8.ttf")format("truetype"),
         url("https://db.onlinewebfonts.com/t/1b4f0611f948c6e1df970fcaa6d54ae8.svg#Essays 1743 V1")format("svg");
}

/* ===== 基础样式 ===== */
:root {
    /* 主色调 */
    --primary-color: #000000;
    --secondary-color: #ff8800;
    --text-color: #333333;
    --light-text: #ffffff;
    --bg-color: #ffffff;
    --card-bg: #ffffff;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --glow-color: rgba(255, 136, 0, 0.3);
    
    /* 字体 */
    --primary-font: 'Montserrat', 'Source Han Sans SC', sans-serif;
    --secondary-font: 'Essays 1743', serif;
    
    /* 尺寸 */
    --header-height: 70px;
    --section-padding: 80px 0;
    --container-padding: 0 15px;
    
    /* 过渡效果 */
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--primary-font);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.8;
    letter-spacing: 0.01em;
    font-weight: 300;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.section {
    padding: var(--section-padding);
}

.section-title {
    font-size: 2.8rem;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    font-family: var(--secondary-font);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
    box-shadow: 0 0 10px var(--glow-color);
}

.highlight {
    color: var(--secondary-color);
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: transparent;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background-color: var(--primary-color);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--light-text);
    font-family: var(--secondary-font);
    letter-spacing: 0.03em;
}

.nav-links {
    display: flex;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--light-text);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition);
    box-shadow: 0 0 5px var(--glow-color);
}

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

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

/* ===== Banner轮播图 ===== */
.banner {
    height: 100vh;
    position: relative;
    overflow: hidden;
}

.slider-container {
    height: 100%;
    position: relative;
}

.slider {
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
}

.slide img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7);
}

.slide-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--light-text);
    max-width: 800px;
    padding: 0 20px;
}

.slide-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-family: var(--secondary-font);
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
}

.slide-content p {
    font-size: 2.2rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    z-index: 10;
}

.prev-btn,
.next-btn {
    background-color: rgba(0, 0, 0, 0.5);
    color: var(--light-text);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.prev-btn:hover,
.next-btn:hover {
    background-color: var(--secondary-color);
    box-shadow: 0 0 10px var(--glow-color);
}

.slider-dots {
    display: flex;
    margin: 0 15px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    margin: 0 5px;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background-color: var(--secondary-color);
    box-shadow: 0 0 10px var(--glow-color);
}

/* ===== 关于我 ===== */
.about-card {
    display: flex;
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-color);
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px var(--shadow-color);
    border-color: var(--secondary-color);
}

.about-image {
    flex: 0 0 40%;
    position: relative;
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.about-content {
    flex: 0 0 100%;
    padding: 25px;
}

.about-content h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    font-family: var(--secondary-font);
}

.about-content p {
    margin-bottom: 15px;
    line-height: 1.6;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.skill-tag {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 5px 15px;
    border-radius: 20px;
    margin-right: 10px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    transition: var(--transition);
    border: 1px solid var(--secondary-color);
}

.skill-tag:hover {
    background-color: var(--secondary-color);
    box-shadow: 0 0 10px var(--glow-color);
    transform: translateY(-3px);
}

.social-links {
    display: flex;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border-radius: 50%;
    margin-right: 15px;
    transition: var(--transition);
    border: 1px solid var(--secondary-color);
}

.social-icon:hover {
    background-color: var(--secondary-color);
    color: var(--light-text);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px var(--glow-color);
}

/* ===== 作品展示 ===== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.portfolio-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px var(--shadow-color);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px var(--shadow-color);
    border-color: var(--secondary-color);
}

.card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.category {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    box-shadow: 0 0 10px var(--glow-color);
}

.card-content {
    padding: 25px;
}

.card-meta {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: #777;
}

.card-meta i {
    margin-right: 5px;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
    letter-spacing: 0.01em;
}

.portfolio-card:hover .card-title {
    color: var(--secondary-color);
}

.card-excerpt {
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.7;
}

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

.read-more i {
    margin-left: 5px;
    transition: var(--transition);
}

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

.read-more:hover i {
    transform: translateX(5px);
}

/* ===== 照片展示 ===== */
/* 主页照片预览 */
.photo-preview {
    margin-top: 30px;
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
    overflow: hidden;
    transition: var(--transition);
}

.photo-preview:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--shadow-color);
}

.photo-preview-content {
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .photo-preview-content {
        flex-direction: row;
        align-items: center;
    }
}

.preview-images {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 10px;
    padding: 20px;
    flex: 1;
}

.preview-img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
    transition: var(--transition);
    box-shadow: 0 3px 10px var(--shadow-color);
}

.preview-img:hover {
    transform: scale(1.05);
}

.preview-text {
    padding: 30px;
    flex: 1;
    text-align: center;
}

@media (min-width: 768px) {
    .preview-text {
        text-align: left;
    }
}

.preview-text h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    font-family: var(--secondary-font);
    color: var(--primary-color);
}

.preview-text p {
    margin-bottom: 25px;
    line-height: 1.7;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--light-text);
    border: 2px solid var(--secondary-color);
    box-shadow: 0 0 15px var(--glow-color);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--secondary-color);
    transform: translateY(-3px);
}

/* 照片页面样式 */
.photo-gallery {
    margin-top: 30px;
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.photo-item {
    position: relative;
    height: 200px;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: var(--transition);
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.photo-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--shadow-color);
}

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

/* 照片查看器 */
.photo-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    display: none;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.photo-viewer.active {
    display: flex;
    opacity: 1;
}

.viewer-content {
    position: relative;
    max-width: 90%;
    max-height: 80%;
    overflow: hidden;
}

.viewer-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border: 3px solid var(--secondary-color);
    box-shadow: 0 0 20px var(--glow-color);
}

.close-viewer {
    position: absolute;
    top: 20px;
    right: 20px;
    color: var(--light-text);
    font-size: 2rem;
    cursor: pointer;
    z-index: 1001;
    transition: var(--transition);
}

.close-viewer:hover {
    color: var(--secondary-color);
    transform: scale(1.2);
}

.viewer-controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 20px;
}

.viewer-controls button {
    background-color: transparent;
    border: 2px solid var(--secondary-color);
    color: var(--light-text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.viewer-controls button:hover {
    background-color: var(--secondary-color);
    transform: scale(1.1);
}

/* ===== 联系我 ===== */
.contact-container {
    display: flex;
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.contact-info {
    flex: 0 0 40%;
    padding: 40px;
    background-color: var(--primary-color);
    color: var(--light-text);
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    font-family: var(--secondary-font);
}

.contact-list {
    margin-bottom: 30px;
}

.contact-list li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.contact-list i {
    width: 30px;
    height: 30px;
    background-color: var(--secondary-color);
    color: var(--light-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    box-shadow: 0 0 10px var(--glow-color);
}

.contact-list a {
    color: var(--light-text);
    transition: var(--transition);
}

.contact-list a:hover {
    color: var(--secondary-color);
}

.qr-code {
    text-align: center;
}

.qr-code h4 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.qr-code img {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    border: 5px solid var(--light-text);
    border-radius: 10px;
}

.contact-form {
    flex: 0 0 60%;
    padding: 40px;
}

.contact-form h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    font-family: var(--secondary-font);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: var(--primary-font);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 10px var(--glow-color);
}

.submit-btn {
    background-color: var(--primary-color);
    color: var(--light-text);
    border: 1px solid var(--secondary-color);
    padding: 12px 25px;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background-color: var(--secondary-color);
    box-shadow: 0 0 15px var(--glow-color);
    transform: translateY(-3px);
}

/* ===== 文章弹窗 ===== */
.article-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    display: none;
    overflow-y: auto;
    padding: 50px 0;
}

.modal-content {
    background-color: var(--bg-color);
    max-width: 900px;
    margin: 0 auto;
    border-radius: 10px;
    position: relative;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
    animation: modalFadeIn 0.5s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    border: 1px solid var(--secondary-color);
}

.close-modal:hover {
    background-color: var(--secondary-color);
    transform: rotate(90deg);
    box-shadow: 0 0 15px var(--glow-color);
}

.modal-body {
    padding: 40px;
}

.full-article {
    display: none;
}

.article-header {
    margin-bottom: 30px;
}

.article-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    font-family: var(--secondary-font);
}

.article-meta {
    display: flex;
    gap: 20px;
    font-size: 0.9rem;
    color: #777;
}

.article-meta i {
    margin-right: 5px;
}

.featured-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 30px;
}

.article-content h3 {
    font-size: 1.8rem;
    margin: 30px 0 15px;
    font-family: var(--secondary-font);
}

.article-content h4 {
    font-size: 1.4rem;
    margin: 25px 0 15px;
}

.article-content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.article-content ul,
.article-content ol {
    margin-bottom: 20px;
    padding-left: 20px;
}

.article-content li {
    margin-bottom: 10px;
    line-height: 1.7;
}

.article-content pre {
    background-color: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 20px;
    font-family: monospace;
}

.article-content code {
    font-family: monospace;
}

/* ===== 页脚 ===== */
.footer {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding-top: 60px;
    position: relative;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-logo h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    font-family: var(--secondary-font);
}

.footer-links h4,
.footer-social h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.footer-links h4::after,
.footer-social h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--secondary-color);
    box-shadow: 0 0 5px var(--glow-color);
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--light-text);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.social-icons {
    display: flex;
}

.footer .social-icon {
    background-color: transparent;
    border: 1px solid var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
}

.back-to-top {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--secondary-color);
    color: var(--light-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 0 15px var(--glow-color);
    opacity: 0;
    visibility: hidden;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

/* ===== 暗色模式切换按钮 ===== */
.dark-mode-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 100;
    transition: var(--transition);
    border: 1px solid var(--secondary-color);
    box-shadow: 0 0 15px var(--glow-color);
}

.dark-mode-toggle:hover {
    background-color: var(--secondary-color);
    transform: rotate(30deg);
}

/* ===== 响应式设计 ===== */
/* 照片网格响应式 */
@media (max-width: 1200px) {
    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
    }
    
    .photo-item {
        height: 150px;
    }
    
    .viewer-controls {
        bottom: 10px;
    }
    
    .viewer-controls button {
        width: 35px;
        height: 35px;
    }
}

@media (max-width: 480px) {
    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 8px;
    }
    
    .photo-item {
        height: 120px;
    }
    
    .close-viewer {
        top: 10px;
        right: 10px;
        font-size: 1.5rem;
    }
    
    .viewer-controls button {
        width: 30px;
        height: 30px;
    }
}

@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-card,
    .contact-container {
        flex-direction: column;
    }
    
    .about-image,
    .about-content,
    .contact-info,
    .contact-form {
        flex: 0 0 100%;
    }
    
    .about-image {
        height: 300px;
    }
    
    .contact-info {
        padding-bottom: 20px;
    }
    
    .qr-code {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 20px;
    }
    
    .qr-code img {
        margin: 0;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .nav-links {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 80%;
        height: calc(100vh - var(--header-height));
        background-color: var(--primary-color);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        box-shadow: 5px 0 15px var(--shadow-color);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: 15px 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .slide-content h1 {
        font-size: 2.5rem;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content > div {
        flex: 0 0 100%;
        margin-bottom: 30px;
    }
}

@media (max-width: 576px) {
    .about-content,
    .contact-form,
    .contact-info,
    .modal-body {
        padding: 20px;
    }
    
    .about-content h3,
    .contact-form h3,
    .contact-info h3 {
        font-size: 1.5rem;
    }
    
    .slide-content h1 {
        font-size: 2rem;
    }
    
    .slide-content p {
        font-size: 1rem;
    }
    
    .article-header h2 {
        font-size: 1.8rem;
    }
    
    .featured-image {
        height: 250px;
    }
    
    .qr-code {
        flex-direction: column;
    }
}

/* ===== 科学的方法论 ===== */
.methodology .section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    font-size: 1.1rem;
    color: #555;
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-top: 30px;
}

.methodology-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 25px 20px;
    text-align: center;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.methodology-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--shadow-color);
    border-color: var(--secondary-color);
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .methodology-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .methodology-grid {
        grid-template-columns: 1fr;
    }
}

.methodology-card .icon {
    width: 60px;
    height: 60px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 1.5rem;
    transition: var(--transition);
}

.methodology-card:hover .icon {
    background-color: var(--secondary-color);
    color: var(--light-text);
    box-shadow: 0 0 15px var(--glow-color);
}

.methodology-card h3 {
    font-size: 1rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.methodology-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--primary-color);
    font-family: var(--secondary-font);
}

.methodology-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: #666;
}

/*