/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根变量定义 */
:root {
    --primary-color: #2c5530;
    --secondary-color: #8b4513;
    --accent-color: #d4af37;
    --text-color: #333;
    --text-light: #666;
    --text-muted: #999;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    --bg-section: #fafbfc;
    --border-color: #e0e0e0;
    --border-light: #f0f0f0;
    --shadow: 0 2px 10px rgba(0,0,0,0.08);
    --shadow-hover: 0 8px 25px rgba(0,0,0,0.15);
    --shadow-card: 0 4px 15px rgba(0,0,0,0.1);
    --gradient-primary: linear-gradient(135deg, #2c5530 0%, #4a7c59 100%);
    --gradient-secondary: linear-gradient(135deg, #8b4513 0%, #cd853f 100%);
    --gradient-accent: linear-gradient(135deg, #d4af37 0%, #f4d03f 100%);
    --success-color: #28a745;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
}

/* 基础样式 */
body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden; /* 防止水平滚动 */
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
}

.logo-img {
    height: 40px;
    width: auto;
    margin-right: 10px;
    border-radius: 4px;
}

.nav-logo i {
    margin-right: 10px;
    font-size: 1.5rem;
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* 主页横幅 */
.hero {
    min-height: 100vh;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 70px;
    position: relative;
    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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
    padding: 24px;
}

.hero-text {
    color: white;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.8);
}

.hero-info {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.9);
}

.info-item i {
    color: var(--accent-color);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphic {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.hero-graphic i {
    font-size: 8rem;
    color: var(--accent-color);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

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

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

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

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

.btn-full {
    width: 100%;
}

/* 章节样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 32px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
}

/* 关于大会样式 */
.about {
    background: var(--bg-section);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.about-content {
    display: grid;
    gap: 60px;
}

.about-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.theme-highlight {
    background: var(--gradient-primary);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 2rem;
    text-align: center;
}

.theme-highlight h4 {
    color: white;
    font-size: 1.3rem;
    margin: 0;
    font-weight: 600;
}

.purpose-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 2rem;
}

.purpose-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.purpose-item:hover {
    transform: translateY(-3px);
}

.purpose-item i {
    color: var(--accent-color);
    font-size: 1.5rem;
}

.purpose-item span {
    font-weight: 600;
    color: var(--primary-color);
}

.about-list {
    list-style: none;
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 1rem;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.about-list i {
    color: var(--accent-color);
    margin-top: 2px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.organization-info h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.org-card {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.org-card h4 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.org-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.org-detail {
    padding: 15px;
    background: var(--bg-light);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

/* 会议议程样式 */
.agenda-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.agenda-timeline {
    position: relative;
}

.agenda-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 80px;
}

.timeline-marker {
    position: absolute;
    left: 20px;
    top: 10px;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: var(--shadow);
}

.timeline-content {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.timeline-time {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.timeline-content h4 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.agenda-highlights h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.highlights-grid {
    display: grid;
    gap: 20px;
}

.highlight-item {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
}

.highlight-item i {
    font-size: 2rem;
    color: var(--accent-color);
}

.highlight-item h4 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

/* 专家阵容样式 */
.speakers {
    background: var(--bg-section);
    position: relative;
}

.speakers::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.expert-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.expert-category {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.category-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.category-icon i {
    font-size: 2rem;
    color: white;
}

.expert-category h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.expert-category p {
    color: var(--text-light);
    line-height: 1.6;
}

.expert-note {
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.expert-note p {
    color: var(--text-light);
    margin: 0;
    font-style: italic;
}

.expert-note i {
    color: var(--accent-color);
    margin-right: 8px;
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.speaker-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

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

.speaker-image {
    height: 200px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.speaker-placeholder {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.speaker-placeholder i {
    font-size: 2rem;
    color: white;
}

.speaker-info {
    padding: 25px;
}

.speaker-info h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.speaker-title {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 8px;
}

.speaker-affiliation {
    color: var(--secondary-color);
    font-size: 0.9rem;
    font-style: italic;
    margin-bottom: 12px;
}

.speaker-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.speaker-topic {
    color: var(--primary-color);
    font-size: 0.9rem;
    background: var(--bg-light);
    padding: 8px 12px;
    border-radius: 6px;
    border-left: 3px solid var(--accent-color);
}

/* 报名与联系合并样式 */
.registration-contact {
    background: var(--bg-light);
    display: none;
}

.registration-contact-content {
    /* display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start; */
}

.registration-section {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-card);
    margin-bottom: 30px;
}

.contact-section {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.subsection-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 25px;
    text-align: center;
    position: relative;
}

.subsection-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 2px;
}

.contact-info-section {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-card);
}

.registration-qr {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-card);
}

/* 保持原有的会议报名样式兼容性 */
.registration-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.pricing-card {
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-light);
}

.pricing-card.featured {
    border: 3px solid var(--accent-color);
    transform: scale(1.05);
}

.pricing-card.premium {
    border: 3px solid var(--secondary-color);
}

.pricing-header {
    background: var(--gradient-primary);
    padding: 25px;
    text-align: center;
    color: white;
}

.pricing-card.featured .pricing-header {
    background: var(--gradient-secondary);
}

.pricing-card.premium .pricing-header {
    background: linear-gradient(135deg, #8b4513 0%, #d4af37 100%);
}

.pricing-header h4 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.price span {
    font-size: 0.9rem;
    font-weight: 400;
    opacity: 0.9;
}

.limited {
    background: rgba(255, 255, 255, 0.2);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: inline-block;
    margin-top: 10px;
}

.pricing-features {
    padding: 25px;
}

.pricing-features p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.pricing-features i {
    color: var(--accent-color);
    font-size: 0.9rem;
}

.registration-note {
    background: var(--bg-light);
    padding: 15px;
    border-radius: 10px;
    border-left: 4px solid var(--accent-color);
}

.registration-note p {
    margin: 0;
    color: var(--text-light);
}

.registration-note i {
    color: var(--accent-color);
    margin-right: 8px;
}

.registration-qr {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.registration-qr h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
}

.qr-section {
    margin-bottom: 30px;
}

.qr-code {
    text-align: center;
    margin-bottom: 20px;
}

.qr-code img {
    max-width: 200px;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.qr-code p {
    margin-top: 10px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.contact-details h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.contact-details .contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    padding: 8px;
    background: var(--bg-light);
    border-radius: 6px;
}

.contact-details .contact-item i {
    color: var(--accent-color);
    width: 16px;
}

.registration-process h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.registration-process ol {
    padding-left: 20px;
}

.registration-process li {
    margin-bottom: 8px;
    color: var(--text-color);
    line-height: 1.5;
}

.registration-info h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.registration-list {
    list-style: none;
    margin-bottom: 40px;
}

.registration-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    padding: 15px;
    background: var(--bg-light);
    border-radius: 10px;
}

.registration-list i {
    color: var(--accent-color);
}

.registration-benefits h3 {
    margin-bottom: 20px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

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

/* 表单样式 */
.registration-form,
.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-align: center;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 联系我们样式 */
.contact {
    background: var(--bg-light);
}

.contact-content {
    display: flex;
    justify-content: center;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
    padding: 25px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    color: white;
    font-size: 1.2rem;
}

.contact-details h4 {
    color: var(--primary-color);
    margin-bottom: 8px;
}

.contact-details p {
    color: var(--text-light);
}

/* 页脚样式 */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s ease;
}

.footer-social a:hover {
    background: var(--accent-color);
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact i {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-image {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-info {
        justify-content: center;
    }
    
    .about-main {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    /* 优化宗旨项目在移动端的显示 */
    .purpose-items {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .purpose-item {
        padding: 12px;
        gap: 12px;
    }
    
    .purpose-item i {
        font-size: 1.3rem;
    }
    
    /* 优化专家分类在移动端的显示 */
    .expert-categories {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .expert-category {
        padding: 25px;
    }
    
    .category-icon {
        width: 60px;
        height: 60px;
    }
    
    .category-icon i {
        font-size: 1.5rem;
    }
    
    /* 优化价格卡片在移动端的显示 */
    .pricing-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .pricing-card.featured {
        transform: none;
        order: -1; /* 推荐项目显示在最前面 */
    }
    
    .pricing-header {
        padding: 20px;
    }
    
    .pricing-features {
        padding: 20px;
    }
    
    .price {
        font-size: 1.8rem;
    }
    
    /* 优化二维码区域在移动端的显示 */
    .registration-qr {
        padding: 20px;
    }
    
    .qr-code img {
        max-width: 150px;
    }
    
    .contact-details .contact-item {
        padding: 6px;
        font-size: 0.9rem;
    }
    
    .agenda-content {
        grid-template-columns: 1fr;
    }
    
    .registration-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* 新的报名联系合并布局响应式 */
    .registration-contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .registration-section {
        padding: 30px;
    }
    
    .contact-info-section,
    .registration-qr {
        padding: 25px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .highlights-grid {
        grid-template-columns: 1fr;
    }
    
    .org-details {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-title {
        font-size: 1.6rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-description {
        font-size: 0.9rem;
    }
    
    .hero-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .info-item {
        font-size: 0.9rem;
    }
    
    .hero-graphic {
        width: 180px;
        height: 180px;
    }
    
    .hero-graphic i {
        font-size: 4rem;
    }
    
    /* 优化主题高亮区域 */
    .theme-highlight {
        padding: 15px;
        margin-bottom: 1.5rem;
    }
    
    .theme-highlight h4 {
        font-size: 1.1rem;
        line-height: 1.4;
    }
    
    /* 优化宗旨项目 */
    .purpose-item {
        padding: 10px;
        gap: 10px;
    }
    
    .purpose-item span {
        font-size: 0.95rem;
    }
    
    /* 优化专家分类 */
    .expert-category {
        padding: 20px;
    }
    
    .category-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 15px;
    }
    
    .category-icon i {
        font-size: 1.3rem;
    }
    
    .expert-category h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    .expert-category p {
        font-size: 0.9rem;
    }
    
    /* 优化价格卡片 */
    .pricing-header {
        padding: 15px;
    }
    
    .pricing-header h4 {
        font-size: 1.2rem;
    }
    
    .price {
        font-size: 1.6rem;
    }
    
    .pricing-features {
        padding: 15px;
    }
    
    .pricing-features p {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }
    
    /* 优化二维码区域 */
    .registration-qr {
        padding: 15px;
    }
    
    .qr-code img {
        max-width: 120px;
    }
    
    .registration-process ol {
        padding-left: 15px;
    }
    
    .registration-process li {
        font-size: 0.9rem;
    }
    
    /* 优化时间线 */
    .timeline-content {
        padding: 15px;
    }
    
    .timeline-content h4 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    .timeline-content p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .registration-form,
    .contact-form {
        padding: 20px;
    }
    
    /* 小屏幕下的报名联系布局 */
    .registration-section {
        padding: 20px;
    }
    
    .contact-info-section,
    .registration-qr {
        padding: 20px;
    }
    
    .subsection-title {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    
    .subsection-title::after {
        width: 40px;
        height: 2px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
}

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

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

.scale-in {
    animation: scaleIn 0.5s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* 滚动指示器 */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(212, 175, 55, 0.3);
    z-index: 9999;
}

.scroll-progress {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.3s ease;
}