:root {
    --primary-color: #006994;
    --secondary-color: #00a6fb;
    --text-color: #333;
    --light-text: #fff;
    --accent-color: #1ac8ed;
    --light-blue: #e3f2fd;
    --coral: #ff7f50;
    --sand: #f4d03f;
    --seaweed: #2ecc71;
    --deep-sea: #1a5f7a;
}

body {
    margin: 0;
    font-family: 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    min-height: 100vh;
    background: url('./images/1.jpg') center center fixed;
    background-size: cover;
    position: relative;
}

/* 首页全屏部分 */
.hero-section {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    overflow: hidden;
    background: transparent;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    padding: 0 20px;
}

.hero-badge {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
    color: white;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.9rem;
    margin-bottom: 20px;
    letter-spacing: 1px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.main-title {
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    letter-spacing: 2px;
}

.secondary-title {
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 40px;
    opacity: 0.9;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.hero-stats {
    display: flex;
    justify-content: center;
    margin: 40px 0;
    gap: 40px;
}

.hero-stat-item {
    text-align: center;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    padding: 20px 30px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.hero-stat-number {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    display: inline-block;
}

.hero-stat-symbol {
    font-size: 1.8rem;
    font-weight: 700;
    display: inline-block;
    vertical-align: top;
    margin-left: 2px;
}

.hero-stat-item p {
    margin-top: 10px;
    font-size: 1rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.6;
    opacity: 0.9;
}

.bubbles-container {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 2;
}

/* 滚动指示器样式优化 */
.scroll-indicator {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.scroll-indicator span {
    display: block;
    margin-bottom: 10px;
    font-size: 0.9rem;
    letter-spacing: 1px;
    opacity: 0.8;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    position: relative;
    margin: 0 auto;
}

.mouse:after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollMouse 2s infinite;
}

@keyframes scrollMouse {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .main-title {
        font-size: 2.8rem;
    }
    
    .secondary-title {
        font-size: 1.4rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-stat-item {
        padding: 15px;
    }
    
    .hero-description {
        font-size: 1rem;
    }
}

/* 内容部分 */
.content-section, 
.introduction-section,
.chart-section,
.data-sources-section {
    background: rgba(255, 255, 255, 0.2);  
    border-radius: 15px;
    margin: 20px auto;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(3px);  
}

.chart-section h2,
.introduction-section h2,
.data-sources-section h2 {
    color: var(--deep-sea);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

.chart-description,
.data-source {
    color: var(--deep-sea);
    text-shadow: 0 1px 1px rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
}

.chart-section {
    max-width: 1200px;
    margin: 0 auto 6rem;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.chart-container {
    height: 500px;
    margin: 2rem 0;
}

.chart-description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #666;
    margin-top: 1.5rem;
}

h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-left: 1rem;
}

h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: var(--secondary-color);
    border-radius: 2px;
}

/* 引言和总结部分 */
.introduction-content,
.conclusion-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.introduction-content h2,
.conclusion-content h2 {
    color: #1a5f7a;
    margin-bottom: 25px;
    font-size: 2rem;
    font-weight: 600;
    text-align: center;
}

.introduction-content p,
.conclusion-content p {
    color: #2c3e50;
    line-height: 1.8;
    font-size: 1.1rem;
    text-align: justify;
    margin-bottom: 0;
}

/* 引言和总结部分增强样式 */
.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 15px;
    font-weight: 600;
    letter-spacing: 1px;
}

.quote-box {
    background-color: rgba(0, 105, 148, 0.1);
    border-left: 4px solid var(--accent-color);
    padding: 15px 20px;
    margin: 20px 0;
    position: relative;
    box-shadow: 0 2px 15px rgba(0, 105, 148, 0.1);
}

.quote-box.right {
    border-left: none;
    border-right: 4px solid var(--accent-color);
    text-align: right;
}

.quote {
    font-size: 1.2rem;
    font-style: italic;
    color: #1a5f7a;
    margin-bottom: 5px;
    line-height: 1.6;
}

.quote-author {
    font-size: 0.9rem;
    text-align: right;
    color: #666;
    font-weight: 600;
}

.quote-box.right .quote-author {
    text-align: left;
}

.highlight-box {
    display: flex;
    justify-content: space-around;
    margin: 30px 0;
    flex-wrap: wrap;
}

.highlight-item {
    text-align: center;
    padding: 15px;
    margin: 10px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(227, 242, 253, 0.9));
    border: 1px solid rgba(0, 105, 148, 0.1);
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    min-width: 120px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.highlight-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    text-shadow: 2px 2px 4px rgba(0, 105, 148, 0.1);
}

.highlight-percent, .highlight-plus {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.highlight-item p {
    margin-top: 5px;
    font-size: 0.9rem;
    color: #555;
}

.scroll-cta {
    text-align: center;
    margin: 30px 0 10px;
}

.scroll-cta p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 10px;
}

.scroll-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.scroll-arrow span {
    display: block;
    width: 20px;
    height: 20px;
    border-bottom: 2px solid var(--primary-color);
    border-right: 2px solid var(--primary-color);
    transform: rotate(45deg);
    margin: -10px;
    animation: scrollArrow 2s infinite;
}

.scroll-arrow span:nth-child(2) {
    animation-delay: 0.2s;
}

.scroll-arrow span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes scrollArrow {
    0% {
        opacity: 0;
        transform: rotate(45deg) translate(-20px, -20px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: rotate(45deg) translate(20px, 20px);
    }
}

/* 时间线样式 */
.timeline {
    position: relative;
    margin: 40px 0;
    padding-left: 50px;
}

.timeline:before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    height: 100%;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.timeline-dot {
    position: absolute;
    left: -50px;
    top: 5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: white;
    border: 3px solid var(--accent-color);
    box-shadow: 0 0 0 5px rgba(26, 200, 237, 0.2);
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.timeline-content {
    background: white;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.timeline-content h4 {
    margin-top: 0;
    color: #1a5f7a;
}

.timeline-content p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* 行动框样式 */
.action-box {
    background: linear-gradient(135deg, var(--light-blue), rgba(0, 166, 251, 0.1));
    border: 1px solid rgba(0, 105, 148, 0.1);
    padding: 25px;
    margin: 30px 0;
    text-align: center;
}

.action-items {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.action-item {
    margin: 10px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(0, 105, 148, 0.1);
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 105, 148, 0.1);
    width: 100px;
    transition: transform 0.3s ease;
}

.action-item:hover {
    background: white;
    border-color: var(--accent-color);
}

.action-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.action-item p {
    margin: 0;
    font-size: 0.9rem;
    color: #333;
}

.final-note {
    text-align: right;
    font-style: italic;
    color: #666;
    margin-top: 30px;
    font-size: 0.9rem;
}

/* 计数器动画 */
.counter {
    display: inline-block;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .highlight-box {
        flex-direction: column;
        align-items: center;
    }
    
    .highlight-item {
        width: 80%;
        margin: 10px 0;
    }
    
    .action-items {
        flex-direction: column;
        align-items: center;
    }
    
    .action-item {
        width: 80%;
        margin: 10px 0;
    }
}

/* 导航栏相关样式 */
.nav-toggle-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-toggle-btn:hover {
    background: white;
    transform: scale(1.05);
}

.nav-toggle-btn i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    height: 100vh;
    width: 280px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1001;
    padding: 20px;
    transition: all 0.3s ease;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.sidebar.active {
    left: 0;
}

.sidebar-header {
    padding: 20px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.sidebar-header h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 600;
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-links li {
    margin: 10px 0;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-link:hover {
    background: rgba(0, 105, 148, 0.1);
    color: var(--primary-color);
}

.nav-link i {
    margin-right: 10px;
    font-size: 1.2rem;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: none;
    backdrop-filter: blur(3px);
    transition: all 0.3s ease;
}

.overlay.active {
    display: block;
}

@media (max-width: 768px) {
    .sidebar {
        width: 250px;
        left: -250px;
    }
    
    .nav-toggle-btn {
        top: 10px;
        left: 10px;
        width: 40px;
        height: 40px;
    }
}

/* 添加视频背景和覆盖层样式 */
#myVideo {
    position: absolute;
    right: 0;
    bottom: 0;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: 0;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 105, 148, 0.7), rgba(0, 166, 251, 0.7));
    z-index: 1;
}

/* 添加波浪动画效果 */
.wave-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23006994" fill-opacity="0.2" d="M0,96L48,112C96,128,192,160,288,165.3C384,171,480,149,576,128C672,107,768,85,864,90.7C960,96,1056,128,1152,138.7C1248,149,1344,139,1392,133.3L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    animation: wave 10s linear infinite;
}

@keyframes wave {
    0% {
        background-position-x: 0;
    }
    100% {
        background-position-x: 1440px;
    }
}

/* 添加气泡动画效果 */
.bubble {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.bubble:nth-child(1) { left: 10%; width: 30px; height: 30px; animation-delay: 0s; }
.bubble:nth-child(2) { left: 20%; width: 20px; height: 20px; animation-delay: 1s; }
.bubble:nth-child(3) { left: 35%; width: 25px; height: 25px; animation-delay: 2s; }
.bubble:nth-child(4) { left: 50%; width: 15px; height: 15px; animation-delay: 3s; }
.bubble:nth-child(5) { left: 65%; width: 35px; height: 35px; animation-delay: 4s; }

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

/* 数据来源部分样式 */
.data-sources-section {
    background: rgba(255, 255, 255, 0.8);
    padding: 60px 0;
    margin-top: 40px;
    border-top: 1px solid rgba(0, 105, 148, 0.1);
    border-radius: 15px;
    margin: 20px auto;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.sources-title {
    text-align: center;
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 40px;
    font-weight: 600;
}

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.source-item {
    background: rgba(255, 255, 255, 0.8);
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.source-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.source-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.source-item h4 {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.source-item ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.source-item ul li {
    color: var(--text-color);
    margin-bottom: 10px;
    font-size: 0.95rem;
    position: relative;
    padding-left: 20px;
}

.source-item ul li:before {
    content: "•";
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.copyright {
    text-align: center;
    color: var(--text-color);
    opacity: 0.8;
    margin-top: 30px;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .data-sources-section {
        padding: 40px 0;
    }

    .sources-title {
        font-size: 1.8rem;
    }

    .sources-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .source-item {
        padding: 20px;
    }
}

/* 数据来源样式 */
.data-source {
    font-size: 0.9rem;
    color: var(--deep-sea);
    opacity: 0.8;
    margin-top: 10px;
    padding: 8px 15px;
    background: rgba(227, 242, 253, 0.5);
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    transition: opacity 0.3s ease;
}

.data-source:hover {
    opacity: 1;
}

.data-source i {
    margin-right: 8px;
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .data-source {
        font-size: 0.85rem;
        padding: 6px 12px;
    }
}

/* 新增的连接器样式 */
.section-connector {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    opacity: 0.8;
}

.connector-line {
    flex-grow: 1;
    height: 1px;
    background: linear-gradient(to right, rgba(0, 105, 148, 0.1), rgba(0, 105, 148, 0.8), rgba(0, 105, 148, 0.1));
    margin: 0 15px;
}

.connector-text {
    font-size: 0.9rem;
    color: #006994;
    white-space: nowrap;
    font-weight: 500;
    padding: 5px 15px;
    border-radius: 20px;
    background-color: rgba(0, 105, 148, 0.1);
}

/* 改进引言部分样式 */
.introduction-section {
    padding: 80px 0;
    background-color: #f8f9fa;
    position: relative;
    overflow: hidden;
}

.introduction-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1518837695005-2083093ee35b?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80') no-repeat center center;
    background-size: cover;
    opacity: 0.1;
    z-index: 0;
}

.introduction-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.section-badge.secondary {
    background-color: rgba(0, 166, 251, 0.2);
    color: #0085b6;
    margin-top: 30px;
}

/* 个人思考部分样式 */
.author-note {
    font-style: italic;
    text-align: right;
    margin-top: 20px;
    color: #666;
}

/* 改进结论部分样式 */
.conclusion-section {
    background-color: #f0f7fa;
    padding: 100px 0;
    position: relative;
}

.conclusion-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    background: linear-gradient(to bottom, transparent, rgba(0, 105, 148, 0.1));
    z-index: 0;
}

.conclusion-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

/* 改进时间线样式 */
.timeline {
    position: relative;
    margin: 40px 0;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, #006994, #00a6fb);
}

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

.timeline-dot {
    position: absolute;
    left: -38px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: #00a6fb;
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px #006994;
}

.timeline-date {
    font-weight: bold;
    color: #006994;
    margin-bottom: 5px;
}

.timeline-content {
    background-color: white;
    padding: 15px 20px;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.timeline-content h4 {
    margin-top: 0;
    color: #006994;
}

.timeline-content p {
    margin-bottom: 0;
}

/* 主导航栏样式 */
.main-nav {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 40px;
    margin-right: 10px;
}

.nav-logo span {
    font-size: 1.2rem;
    font-weight: 600;
    color: #006994;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-link:hover, .nav-link.active {
    color: #006994;
    background-color: rgba(0, 105, 148, 0.1);
}

/* 逻辑流程图样式 */
.logic-flow-section {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.logic-flow-section h2 {
    text-align: center;
    margin-bottom: 40px;
    color: #006994;
}

.logic-flow-container {
    max-width: 1200px;
    margin: 0 auto;
}

.logic-flow-chart {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.second-row {
    margin-top: 20px;
}

.logic-node {
    background-color: white;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    width: 140px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.logic-node:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.start-node {
    border-left: 5px solid #006994;
}

.end-node {
    border-right: 5px solid #006994;
}

.node-content {
    margin-bottom: 10px;
}

.node-content i {
    display: block;
    font-size: 2rem;
    color: #006994;
    margin-bottom: 10px;
}

.node-content span {
    font-weight: 600;
    color: #333;
}

.node-description {
    font-size: 0.8rem;
    color: #666;
}

.logic-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #006994;
}

.logic-arrow i {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.logic-arrow span {
    font-size: 0.8rem;
    background-color: rgba(0, 105, 148, 0.1);
    padding: 3px 8px;
    border-radius: 10px;
}

.down-arrow {
    position: absolute;
    bottom: -50px;
    right: 0;
    transform: rotate(90deg);
}

.reverse-arrow i {
    transform: scaleX(-1);
}

.logic-flow-description {
    text-align: center;
    margin-top: 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.logic-flow-description p {
    margin-bottom: 0;
    color: #333;
}

/* 页脚样式 */
.site-footer {
    background-color: #006994;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-section {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
    padding-right: 30px;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.5);
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

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

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

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

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

.footer-bottom p {
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .logic-flow-chart {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logic-node {
        margin-bottom: 20px;
        width: 100%;
    }
    
    .logic-arrow {
        transform: rotate(90deg);
        margin: 10px 0;
    }
    
    .down-arrow, .reverse-arrow {
        transform: none;
    }
    
    .nav-links {
        display: none;
    }
    
    .main-nav .container {
        flex-direction: column;
    }
    
    .nav-logo {
        margin-bottom: 15px;
    }
}

@media (max-width: 768px) {
    .footer-nav {
        flex-direction: column;
    }
    
    .footer-section {
        width: 100%;
        padding-right: 0;
    }
}