/* 全局样式 */
:root {
    --primary-color: #0066cc;
    --primary-dark: #004999;
    --primary-light: #3385db;
    --secondary-color: #00a3e0;
    --accent-color: #ff6b35;
    --text-dark: #1a1a1a;
    --text-medium: #4a4a4a;
    --text-light: #6a6a6a;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
}

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

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

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

/* 导航栏 */
.navbar {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    height: 45px;
    width: auto;
}

.brand-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-medium);
    font-weight: 500;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--secondary-color) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,200 600,300 T1200,300 L1200,600 L0,600 Z" fill="rgba(255,255,255,0.05)"/></svg>') no-repeat center bottom;
    background-size: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.2);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    font-weight: 300;
    letter-spacing: 1px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
    cursor: pointer;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: #ff5722;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

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

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

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

.btn-cta {
    background: white;
    color: var(--primary-color);
    padding: 15px 40px;
    font-size: 1.1rem;
}

.btn-cta:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* 统计数据 */
.stats {
    background: var(--bg-light);
    padding: 3rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-medium);
}

/* 通用区块样式 */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* 关于预览 */
.about-preview {
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 1.5rem;
}

.mission-list {
    list-style: none;
    margin: 2rem 0;
}

.mission-list li {
    padding: 0.8rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.05rem;
}

.mission-list i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

.about-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* 会员企业 */
.members-preview {
    background: var(--bg-light);
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.member-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.member-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.member-logo {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.member-logo img {
    max-height: 60px;
    width: auto;
    object-fit: contain;
}

.member-card h4 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.member-card p {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* 专家团队 */
.experts-preview {
    background: white;
}

.experts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.expert-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.expert-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.expert-image {
    height: 280px;
    overflow: hidden;
    background: var(--bg-light);
}

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

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

.expert-card h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin: 1.5rem 1.5rem 0.5rem;
}

.expert-title {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: 600;
    margin: 0 1.5rem 0.3rem;
}

.expert-company {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0 1.5rem 1rem;
}

.expert-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 0 1.5rem 1.5rem;
}

.expert-tags span {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--bg-light);
    color: var(--text-medium);
    font-size: 0.85rem;
    border-radius: 20px;
}

/* 活动预览 */
.events-preview {
    background: var(--bg-light);
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.event-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.event-date {
    text-align: center;
    min-width: 70px;
}

.date-day {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.date-month {
    display: block;
    font-size: 1rem;
    color: var(--text-medium);
    margin-top: 0.3rem;
}

.event-content {
    flex: 1;
}

.event-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 0.8rem;
}

.event-badge.completed {
    background: #e8f5e9;
    color: #2e7d32;
}

.event-card.upcoming .event-badge {
    background: #fff3e0;
    color: #e65100;
}

.event-content h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.event-content p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.4rem;
}

.event-content i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.event-link {
    display: inline-block;
    margin-top: 0.8rem;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
}

.event-link:hover {
    color: var(--primary-dark);
}

.event-link i {
    margin-left: 0.3rem;
    transition: var(--transition);
}

.event-link:hover i {
    transform: translateX(5px);
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
    padding: 5rem 0;
}

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

.cta p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 4rem 0 2rem;
}

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

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-col p {
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

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

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: white;
    padding-left: 5px;
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.contact-info i {
    color: var(--accent-color);
    width: 20px;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

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

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: white;
    padding: 5rem 0 3rem;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.95;
}

/* 关于页面样式 */
.about-intro {
    padding: 5rem 0;
    background: white;
}

.intro-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.intro-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.intro-text h3 {
    font-size: 1.2rem;
    color: var(--text-light);
    font-weight: 400;
    margin-bottom: 2rem;
}

.intro-text .lead {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.intro-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-medium);
}

.intro-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-box {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-box h4 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-box p {
    font-size: 1rem;
    color: var(--text-medium);
}

/* 使命愿景 */
.mission-vision {
    background: var(--bg-light);
    padding: 5rem 0;
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.mv-card {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.mv-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.mv-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    color: white;
    font-size: 2rem;
}

.mv-card h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.mv-card p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-medium);
}

/* 核心职能 */
.core-functions {
    padding: 5rem 0;
    background: white;
}

.functions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.function-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.function-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.function-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 12px;
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.function-card h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.function-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-medium);
}

/* 组织架构 */
.organization {
    padding: 5rem 0;
    background: var(--bg-light);
}

.org-structure {
    max-width: 900px;
    margin: 0 auto;
}

.org-level {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    position: relative;
}

.org-level::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 1rem;
    background: var(--primary-color);
}

.org-level:last-child::after {
    display: none;
}

.org-box {
    background: white;
    padding: 2rem 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    min-width: 200px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.org-box:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.org-box.president {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-color: transparent;
}

.org-box h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.org-box p {
    font-size: 0.95rem;
    opacity: 0.8;
}

/* 发展历程 */
.milestones {
    padding: 5rem 0;
    background: white;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 80px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary-color);
    opacity: 0.2;
}

.timeline-item {
    display: flex;
    gap: 3rem;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-year {
    min-width: 100px;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: right;
    position: relative;
}

.timeline-year::after {
    content: '';
    position: absolute;
    right: -26px;
    top: 10px;
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 0 3px var(--primary-color);
}

.timeline-content {
    flex: 1;
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.timeline-content h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.timeline-content p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-medium);
}

/* 会员企业页面样式 */
.member-categories {
    background: white;
    padding: 3rem 0 2rem;
    border-bottom: 1px solid var(--border-color);
}

.filter-tabs {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: 50px;
    color: var(--text-medium);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.members-list {
    padding: 4rem 0;
    background: var(--bg-light);
}

.members-grid-full {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.member-card-full {
    display: flex;
    gap: 3rem;
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.member-card-full:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.member-logo-full {
    min-width: 180px;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 12px;
    padding: 1.5rem;
}

.member-logo-full img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.placeholder-logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
}

.member-info {
    flex: 1;
}

.member-info h3 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.member-badge {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 1rem;
}

.member-desc {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 1.5rem;
}

.member-meta {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.member-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-light);
}

.member-meta i {
    color: var(--primary-color);
}

.member-tags {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.member-tags span {
    padding: 0.4rem 1rem;
    background: var(--bg-light);
    color: var(--text-medium);
    font-size: 0.9rem;
    border-radius: 20px;
}

/* 入会信息 */
.join-info {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.join-info h3 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.join-info > p {
    font-size: 1.1rem;
    color: var(--text-medium);
    margin-bottom: 2.5rem;
}

.join-benefits {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.benefit-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.benefit-item i {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.benefit-item span {
    font-size: 1rem;
    color: var(--text-dark);
    font-weight: 500;
}

/* 专家页面样式 */
.experts-intro {
    background: white;
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-color);
}

.intro-lead {
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--text-medium);
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.experts-list {
    background: var(--bg-light);
    padding: 4rem 0;
}

.expert-category {
    margin-bottom: 4rem;
}

.expert-category:last-child {
    margin-bottom: 0;
}

.expert-category h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 2.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.expert-category h2 i {
    font-size: 1.5rem;
}

.experts-grid-detail {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.expert-card-detail {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 3rem;
    transition: var(--transition);
}

.expert-card-detail:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.expert-photo {
    min-width: 200px;
    height: 200px;
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.expert-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.placeholder-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 600;
}

.expert-content {
    flex: 1;
}

.expert-content h3 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.expert-role {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.expert-company {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.expert-company i {
    color: var(--primary-color);
}

.expert-bio {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 1.5rem;
}

.expert-specialties {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.expert-specialties span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-light);
    color: var(--text-medium);
    font-size: 0.9rem;
    border-radius: 20px;
}

.expert-specialties i {
    color: var(--accent-color);
    font-size: 0.85rem;
}

.expert-achievements {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.expert-achievements p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-medium);
    margin: 0;
}

.expert-achievements strong {
    color: var(--text-dark);
}

/* 专家服务 */
.expert-services {
    background: white;
    padding: 5rem 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2.5rem;
}

.service-card {
    text-align: center;
    padding: 2.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: var(--transition);
}

.service-card:hover {
    background: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.service-card i {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    color: white;
    font-size: 2rem;
}

.service-card h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.service-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-medium);
}

/* 活动页面样式 */
.upcoming-events,
.past-events {
    padding: 4rem 0;
    background: var(--bg-light);
}

.past-events {
    background: white;
}

.section-title {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.section-title i {
    color: var(--primary-color);
}

.events-grid-large {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.event-card-large {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.event-card-large:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.event-card-large.featured {
    border: 3px solid var(--accent-color);
}

.event-banner {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.event-tag {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    padding: 0.5rem 1.5rem;
    background: white;
    color: var(--primary-color);
    font-weight: 600;
    border-radius: 25px;
    font-size: 0.9rem;
}

.event-tag.hot {
    background: var(--accent-color);
    color: white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.event-date-large {
    text-align: center;
    color: white;
}

.event-date-large .date-day {
    display: block;
    font-size: 4rem;
    font-weight: 700;
    line-height: 1;
}

.event-date-large .date-month {
    display: block;
    font-size: 1.5rem;
    margin-top: 0.5rem;
}

.event-details {
    padding: 3rem;
}

.event-details h3 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.event-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 2rem;
}

.event-meta-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 8px;
}

.event-meta-info span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    color: var(--text-medium);
}

.event-meta-info i {
    color: var(--primary-color);
}

.event-highlights {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 8px;
}

.event-highlights h4 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.event-highlights ul {
    list-style: none;
    padding-left: 0;
}

.event-highlights li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-medium);
}

.event-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: 600;
}

/* 往期活动时间线 */
.events-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.event-card-timeline {
    display: flex;
    gap: 3rem;
    margin-bottom: 3rem;
    padding-left: 2rem;
    border-left: 3px solid var(--border-color);
    position: relative;
}

.event-card-timeline::before {
    content: '';
    position: absolute;
    left: -9px;
    top: 0;
    width: 15px;
    height: 15px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--primary-color);
}

.timeline-marker {
    min-width: 80px;
}

.timeline-date {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.timeline-content {
    flex: 1;
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
}

.timeline-content h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.event-summary {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 1.5rem;
}

.event-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: white;
    border-radius: 8px;
}

.event-stats span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-medium);
}

.event-stats i {
    color: var(--accent-color);
}

.event-speakers {
    font-size: 1rem;
    color: var(--text-medium);
    margin-bottom: 1rem;
}

.event-speakers strong {
    color: var(--text-dark);
}

.event-review-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.event-review-link:hover {
    color: var(--primary-dark);
    gap: 0.8rem;
}

/* 活动类型 */
.event-types {
    padding: 5rem 0;
    background: var(--bg-light);
}

.types-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.type-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.type-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 2rem;
}

.type-card h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.type-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-medium);
}

/* 交流社群 */
.community {
    padding: 5rem 0;
    background: white;
}

.community-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.community-text h2 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.community-text > p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 1.5rem;
}

.community-benefits {
    list-style: none;
    margin-bottom: 2rem;
}

.community-benefits li {
    padding: 0.8rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.05rem;
    color: var(--text-medium);
}

.community-benefits i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

.community-note {
    padding: 1rem 1.5rem;
    background: var(--bg-light);
    border-left: 4px solid var(--primary-color);
    border-radius: 4px;
    margin-bottom: 2rem;
    display: flex;
    align-items: start;
    gap: 1rem;
}

.community-note i {
    color: var(--primary-color);
    margin-top: 0.3rem;
}

.community-groups {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.group-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition);
}

.group-card:hover {
    background: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.group-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.group-card h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.group-card p {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* 资源中心页面样式 */
.resources-nav {
    background: white;
    padding: 3rem 0 2rem;
    border-bottom: 1px solid var(--border-color);
}

.resource-tabs {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.resource-tab {
    padding: 0.8rem 1.5rem;
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: 50px;
    color: var(--text-medium);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.resource-tab:hover {
    background: var(--primary-light);
    color: white;
}

.resource-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.resources-list {
    padding: 4rem 0;
    background: var(--bg-light);
}

.resource-section {
    margin-bottom: 4rem;
}

.resource-section:last-child {
    margin-bottom: 0;
}

.resource-category-title {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 2.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

.resource-card {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 2rem;
    transition: var(--transition);
}

.resource-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.resource-icon {
    width: 80px;
    height: 80px;
    min-width: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 12px;
    font-size: 2.5rem;
}

.resource-icon .fa-file-pdf {
    color: #d32f2f;
}

.resource-icon .fa-file-alt {
    color: #1976d2;
}

.resource-icon .fa-file-powerpoint {
    color: #d84315;
}

.resource-icon .fa-file-excel {
    color: #388e3c;
}

.resource-icon .fa-file-word {
    color: #1976d2;
}

.resource-content {
    flex: 1;
}

.resource-content h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.resource-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-medium);
    margin-bottom: 1.5rem;
}

.resource-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 1.5rem;
}

.resource-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.resource-meta i {
    color: var(--primary-color);
}

.resource-tag {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
}

.resource-tag.member-only {
    background: #fff3e0;
    color: #e65100;
}

.resource-tag.free {
    background: #e8f5e9;
    color: #2e7d32;
}

.btn-sm {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
}

/* 会员提示 */
.member-cta {
    margin-top: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    padding: 4rem;
    text-align: center;
    color: white;
}

.member-cta-content i {
    font-size: 4rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.member-cta-content h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.member-cta-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* 联系页面样式 */
.contact-info-section {
    padding: 4rem 0;
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.contact-info-card {
    text-align: center;
    padding: 3rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: var(--transition);
}

.contact-info-card:hover {
    background: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    color: white;
    font-size: 2rem;
}

.contact-info-card h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.contact-info-card p {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.contact-info-card a {
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-info-card strong {
    font-size: 1.2rem;
    color: var(--text-dark);
}

.contact-info-card small {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* 加入学会 */
.join-section {
    padding: 5rem 0;
    background: var(--bg-light);
}

.join-text h2 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.join-intro {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 3rem;
}

.membership-types {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    margin-bottom: 4rem;
}

.membership-type {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.membership-type h3 {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.type-desc {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.benefits-list {
    list-style: none;
    margin-bottom: 2rem;
}

.benefits-list li {
    padding: 0.8rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.05rem;
    color: var(--text-medium);
    border-bottom: 1px solid var(--border-color);
}

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

.benefits-list i {
    color: var(--accent-color);
    font-size: 1.1rem;
}

.membership-level {
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
}

.membership-level p {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.level-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    margin-right: 0.8rem;
    margin-bottom: 0.8rem;
    background: var(--bg-light);
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 20px;
}

/* 加入流程 */
.join-process {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    margin-bottom: 3rem;
}

.join-process h3 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 2.5rem;
    text-align: center;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.process-step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    color: white;
    font-size: 1.8rem;
    font-weight: 700;
}

.step-content h4 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.step-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-medium);
}

.contact-cta {
    text-align: center;
    padding: 3rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.contact-cta p {
    font-size: 1.1rem;
    color: var(--text-medium);
    margin-bottom: 1.5rem;
}

/* 常见问题 */
.faq-section {
    padding: 5rem 0;
    background: white;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}

.faq-item {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 12px;
    transition: var(--transition);
}

.faq-item:hover {
    background: white;
    box-shadow: var(--shadow-md);
}

.faq-item h4 {
    font-size: 1.15rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    display: flex;
    align-items: start;
    gap: 0.8rem;
}

.faq-item h4 i {
    color: var(--primary-color);
    margin-top: 0.2rem;
}

.faq-item p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-medium);
}

/* 合作咨询 */
.partnership-section {
    padding: 5rem 0;
    background: var(--bg-light);
}

.partnership-text h2 {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.partnership-text > p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: 3rem;
}

.partnership-types {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.partnership-item {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.partnership-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.partnership-item i {
    width: 60px;
    height: 60px;
    min-width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 1.8rem;
}

.partnership-item h4 {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.partnership-item p {
    font-size: 1rem;
    color: var(--text-medium);
}

.partnership-note {
    font-size: 1.05rem;
    color: var(--text-medium);
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.partnership-note a {
    color: var(--primary-color);
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: white;
        box-shadow: var(--shadow-md);
        padding: 2rem;
        gap: 0;
        transition: var(--transition);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .about-content {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .members-grid,
    .experts-grid {
        grid-template-columns: 1fr;
    }

    .events-grid {
        grid-template-columns: 1fr;
    }

    .event-card {
        flex-direction: column;
        text-align: center;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    /* 关于页面响应式 */
    .page-header h1 {
        font-size: 2rem;
    }

    .intro-content {
        grid-template-columns: 1fr;
    }

    .intro-stats {
        grid-template-columns: 1fr 1fr;
    }

    .mv-grid {
        grid-template-columns: 1fr;
    }

    .functions-grid {
        grid-template-columns: 1fr;
    }

    .org-level {
        flex-direction: column;
        align-items: center;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column;
        gap: 1rem;
        padding-left: 50px;
    }

    .timeline-year {
        text-align: left;
    }

    .timeline-year::after {
        left: -30px;
        right: auto;
    }

    /* 会员页面响应式 */
    .members-grid-full {
        grid-template-columns: 1fr;
    }

    .member-card-full {
        flex-direction: column;
    }

    .filter-tabs {
        flex-wrap: wrap;
        justify-content: center;
    }

    .join-benefits {
        grid-template-columns: 1fr 1fr;
    }

    /* 专家页面响应式 */
    .expert-card-detail {
        flex-direction: column;
    }

    .expert-photo {
        width: 100%;
        height: 250px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    /* 活动页面响应式 */
    .events-grid-large,
    .types-grid {
        grid-template-columns: 1fr;
    }

    .event-card-timeline {
        padding-left: 0;
    }

    .timeline-marker {
        position: relative;
        left: 0;
    }

    .community-content {
        grid-template-columns: 1fr;
    }

    .community-groups {
        grid-template-columns: 1fr 1fr;
    }

    /* 资源页面响应式 */
    .resource-tabs {
        flex-wrap: wrap;
        justify-content: center;
    }

    .resources-grid {
        grid-template-columns: 1fr;
    }

    .event-meta-info {
        grid-template-columns: 1fr;
    }

    /* 联系页面响应式 */
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .membership-types {
        grid-template-columns: 1fr;
    }

    .faq-grid {
        grid-template-columns: 1fr;
    }

    .partnership-types {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }
}