/* 官网首页样式 */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar.scrolled {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Hero Section */
.hero-section {
    margin-top: 76px;
    position: relative;
}

.hero-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0;
    min-height: 500px;
    display: flex;
    align-items: center;
}

.hero-content.hero-2 {
    background: linear-gradient(135deg, #5f72bd 0%, #9921e8 100%);
}

.hero-content.hero-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.hero-content.hero-4 {
    background: linear-gradient(135deg, #7b68ee 0%, #4169e1 100%);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    padding: 20px;
}

/* 产品卡片 */
.product-card {
    transition: all 0.3s ease;
    border-radius: 15px;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
}

.product-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    color: white;
}

.product-card:nth-child(2) .product-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.product-card:nth-child(3) .product-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.product-card:nth-child(4) .product-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.product-icon i {
    color: white !important;
}

/* 统计卡片 */
.stats-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* 优势卡片 */
.advantage-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 50%;
}

/* 用户类型卡片 */
.user-type-card {
    transition: all 0.3s ease;
    border-radius: 20px;
}

.user-type-card:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2) !important;
}

.user-type-card ul li {
    padding: 8px 0;
}

/* 联系我们区域 */
.contact-item {
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

/* 页脚链接 */
footer a {
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: white !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-content {
        padding: 80px 0;
        min-height: 400px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content .lead {
        font-size: 1rem;
    }
    
    .stats-card h3 {
        font-size: 2rem;
    }
}

/* 按钮动画 */
.btn {
    transition: all 0.3s ease;
    border-radius: 8px;
    padding: 10px 25px;
    font-weight: 500;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

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

/* 卡片阴影效果 */
.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}

/* 渐变背景 */
.bg-gradient-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.bg-gradient-success {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.bg-gradient-info {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.bg-gradient-warning {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

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

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

/* 固定导航栏时的内容偏移 */
section {
    scroll-margin-top: 76px;
}

/* 新闻卡片 */
.news-card {
    transition: all 0.3s ease;
    border-radius: 15px;
    overflow: hidden;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
}

.news-card .card-title a:hover {
    color: #0d6efd !important;
}

.news-date {
    font-size: 0.85rem;
}

/* 发展历程时间线样式 */
.timeline-container {
    position: relative;
    padding: 40px 0;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding-left: 50%;
    padding-right: 20px;
    margin-bottom: 0;
}

.timeline-item-right {
    padding-left: 20px;
    padding-right: 50%;
    text-align: right;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 0;
    width: 20px;
    height: 20px;
    background: white;
    border: 4px solid #667eea;
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-dot-current {
    width: 30px;
    height: 30px;
    border-color: #ffc107;
    box-shadow: 0 0 20px rgba(255, 193, 7, 0.5);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 193, 7, 0.5);
    }
    50% {
        box-shadow: 0 0 30px rgba(255, 193, 7, 0.8);
    }
}

.timeline-content {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    margin-left: 40px;
    transition: all 0.3s ease;
}

.timeline-item-right .timeline-content {
    margin-left: 0;
    margin-right: 40px;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.timeline-year {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.timeline-events {
    list-style: none;
    padding: 0;
    margin: 0;
}

.timeline-events li {
    padding: 8px 0;
    font-size: 0.95rem;
}

/* 统计数据盒子 */
.stat-box {
    transition: all 0.3s ease;
}

.stat-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15) !important;
}

/* 响应式设计 - 移动端时间线 */
@media (max-width: 768px) {
    .timeline-line {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item-right {
        padding-left: 60px;
        padding-right: 20px;
        text-align: left;
    }
    
    .timeline-dot {
        left: 20px;
    }
    
    .timeline-content {
        margin-left: 0;
        margin-right: 0;
    }
    
    .timeline-item-right .timeline-content {
        margin-left: 0;
        margin-right: 0;
    }
}

/* 合作院校展示样式 */
.university-showcase {
    overflow: hidden;
}

.university-card {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
}

.university-card .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15) !important;
}

.university-logo {
    transition: all 0.3s ease;
}

.university-card:hover .university-logo {
    transform: scale(1.1) rotate(5deg);
}

/* 波浪线动画 */
@keyframes wave {
    0%, 100% {
        d: path("M0,50 Q150,20 300,50 T600,50 T900,50 T1200,50");
    }
    50% {
        d: path("M0,50 Q150,80 300,50 T600,50 T900,50 T1200,50");
    }
}

.wave-line path {
    animation: wave 3s ease-in-out infinite;
}

/* 响应式 - 合作院校 */
@media (max-width: 768px) {
    .university-showcase {
        padding: 30px 0 !important;
    }
    
    .wave-line {
        display: none;
    }
}

/* 发展历程横向时间轴V4 - 两排布局 */
.history-timeline-wrapper-v4 {
    overflow: visible;
    position: relative;
}

/* 时间轴卡片V4 */
.timeline-card-v4 {
    background: white;
    border-radius: 25px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
    height: 100%;
}

.timeline-card-v4:hover {
    transform: translateY(-15px) scale(1.05);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* 时间轴圆点V4 */
.timeline-dot-v4 {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 7px solid white;
    box-shadow: 0 0 0 6px rgba(102,126,234,0.35), 0 8px 20px rgba(0,0,0,0.3);
    display: inline-block;
}

.timeline-dot-v4.timeline-dot-current {
    width: 40px;
    height: 40px;
    animation: pulse-dot-v4 2s infinite;
    box-shadow: 0 0 0 8px rgba(245,87,108,0.45), 0 12px 30px rgba(245,87,108,0.6);
}

@keyframes pulse-dot-v4 {
    0%, 100% {
        box-shadow: 0 0 0 8px rgba(245,87,108,0.45), 0 12px 30px rgba(245,87,108,0.6);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(245,87,108,0.25), 0 15px 35px rgba(245,87,108,0.7);
    }
}

/* 卡片头部样式 */
.timeline-card-v4 .node-card-header {
    padding: 25px 25px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.timeline-card-v4 .node-card-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255,255,255,0.1);
    transform: rotate(45deg);
    transition: all 0.6s ease;
}

.timeline-card-v4:hover .node-card-header::before {
    top: -100%;
    right: -100%;
}

.timeline-card-v4 .year-label {
    font-size: 3.2rem;
    font-weight: 900;
    color: white;
    text-shadow: 3px 3px 10px rgba(0,0,0,0.4);
    margin-bottom: 15px;
    letter-spacing: 3px;
}

.timeline-card-v4 .node-title {
    font-size: 1.65rem;
    font-weight: 700;
    color: white;
    margin: 0;
    text-shadow: 2px 2px 6px rgba(0,0,0,0.3);
    line-height: 1.5;
}

/* 卡片主体样式 */
.timeline-card-v4 .node-card-body {
    padding: 25px 25px;
    background: white;
}

.timeline-card-v4 .node-tag .badge {
    font-size: 1.25rem;
    padding: 12px 26px;
    border-radius: 30px;
    font-weight: 700;
    letter-spacing: 1.5px;
}

.timeline-card-v4 .node-description {
    font-size: 1.2rem;
    color: #555;
    line-height: 1.7;
    margin-bottom: 18px;
    font-weight: 500;
}

.timeline-card-v4 .node-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.timeline-card-v4 .node-features li {
    padding: 12px 0;
    font-size: 1.15rem;
    color: #444;
    line-height: 1.7;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
}

.timeline-card-v4 .node-features li:last-child {
    border-bottom: none;
}

.timeline-card-v4 .node-features li:hover {
    padding-left: 10px;
    background: #f8f9fa;
}

.timeline-card-v4 .node-features li i {
    margin-right: 16px;
    font-size: 1.25rem;
    min-width: 24px;
    margin-top: 4px;
}

.timeline-card-v4 .node-features li strong {
    color: #333;
    font-weight: 700;
}

/* 当前卡片特殊样式 */
.timeline-card-v4.node-card-current {
    border: 4px solid #f5576c;
    box-shadow: 0 15px 50px rgba(245,87,108,0.35);
}

.timeline-card-v4.node-card-current:hover {
    box-shadow: 0 25px 70px rgba(245,87,108,0.5);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .timeline-card-v4 .year-label {
        font-size: 2.2rem;
    }
    
    .timeline-card-v4 .node-title {
        font-size: 1.3rem;
    }
    
    .timeline-card-v4 .node-description {
        font-size: 1rem;
    }
    
    .timeline-card-v4 .node-features li {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .timeline-card-v4 .year-label {
        font-size: 2rem;
    }
    
    .timeline-card-v4 .node-title {
        font-size: 1.2rem;
    }
    
    .timeline-card-v4 .node-card-header {
        padding: 28px 22px;
    }
    
    .timeline-card-v4 .node-card-body {
        padding: 28px 22px;
    }
    
    .timeline-card-v4 .node-description {
        font-size: 0.95rem;
    }
    
    .timeline-card-v4 .node-features li {
        font-size: 0.9rem;
        padding: 12px 0;
    }
}

/* 发展历程横向时间轴V3 - 完全上下交替布局 */
.history-timeline-wrapper-v3 {
    overflow: visible;
    position: relative;
}

.timeline-absolute-container {
    position: relative;
    height: 800px;
}

.timeline-item-absolute {
    position: absolute;
}

.timeline-item-top {
    top: 0;
}

.timeline-item-bottom {
    bottom: 0;
}

/* 时间轴卡片V3 */
.timeline-card-v3 {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
}

.timeline-card-v3:hover {
    transform: translateY(-15px) scale(1.05);
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

/* 时间轴圆点V3 */
.timeline-dot-v3 {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 6px solid white;
    box-shadow: 0 0 0 5px rgba(102,126,234,0.3), 0 8px 20px rgba(0,0,0,0.25);
    z-index: 10;
}

.timeline-dot-current {
    width: 32px;
    height: 32px;
    animation: pulse-dot-v3 2s infinite;
    box-shadow: 0 0 0 6px rgba(245,87,108,0.4), 0 10px 25px rgba(245,87,108,0.5);
}

@keyframes pulse-dot-v3 {
    0%, 100% {
        box-shadow: 0 0 0 6px rgba(245,87,108,0.4), 0 10px 25px rgba(245,87,108,0.5);
    }
    50% {
        box-shadow: 0 0 0 12px rgba(245,87,108,0.2), 0 12px 30px rgba(245,87,108,0.6);
    }
}

/* 卡片头部样式 - 复用之前的 */
.timeline-card-v3 .node-card-header {
    padding: 30px 25px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.timeline-card-v3 .node-card-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255,255,255,0.1);
    transform: rotate(45deg);
    transition: all 0.6s ease;
}

.timeline-card-v3:hover .node-card-header::before {
    top: -100%;
    right: -100%;
}

.timeline-card-v3 .year-label {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.timeline-card-v3 .node-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: white;
    margin: 0;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.2);
    line-height: 1.4;
}

/* 卡片主体样式 */
.timeline-card-v3 .node-card-body {
    padding: 30px 25px;
    background: white;
}

.timeline-card-v3 .node-tag .badge {
    font-size: 1.1rem;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 1px;
}

.timeline-card-v3 .node-description {
    font-size: 1.05rem;
    color: #555;
    line-height: 1.8;
    margin-bottom: 20px;
    font-weight: 500;
}

.timeline-card-v3 .node-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.timeline-card-v3 .node-features li {
    padding: 12px 0;
    font-size: 1rem;
    color: #444;
    line-height: 1.7;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
}

.timeline-card-v3 .node-features li:last-child {
    border-bottom: none;
}

.timeline-card-v3 .node-features li:hover {
    padding-left: 10px;
    background: #f8f9fa;
}

.timeline-card-v3 .node-features li i {
    margin-right: 12px;
    font-size: 1.1rem;
    min-width: 20px;
    margin-top: 3px;
}

.timeline-card-v3 .node-features li strong {
    color: #333;
    font-weight: 700;
}

/* 当前卡片特殊样式 */
.timeline-card-v3.node-card-current {
    border: 3px solid #f5576c;
    box-shadow: 0 15px 50px rgba(245,87,108,0.3);
}

.timeline-card-v3.node-card-current:hover {
    box-shadow: 0 25px 70px rgba(245,87,108,0.4);
}

/* 响应式设计 */
@media (max-width: 1400px) {
    .timeline-absolute-container {
        height: 900px;
    }
    
    .timeline-card-v3 .year-label {
        font-size: 2.2rem;
    }
    
    .timeline-card-v3 .node-title {
        font-size: 1.3rem;
    }
    
    .timeline-card-v3 .node-description {
        font-size: 1rem;
    }
}

@media (max-width: 1200px) {
    .timeline-absolute-container {
        height: 1000px;
    }
    
    .timeline-card-v3 .year-label {
        font-size: 2rem;
    }
    
    .timeline-card-v3 .node-title {
        font-size: 1.2rem;
    }
    
    .timeline-card-v3 .node-description {
        font-size: 0.95rem;
    }
    
    .timeline-card-v3 .node-features li {
        font-size: 0.95rem;
    }
}

@media (max-width: 992px) {
    .history-timeline-wrapper-v3 {
        padding: 60px 0 !important;
    }
    
    .timeline-absolute-container {
        position: static;
        height: auto;
    }
    
    .timeline-item-absolute {
        position: static !important;
        width: 100% !important;
        left: auto !important;
        top: auto !important;
        bottom: auto !important;
        margin-bottom: 80px;
    }
    
    .timeline-dot-v3 {
        position: relative !important;
        top: auto !important;
        bottom: auto !important;
        left: 50% !important;
        transform: translateX(-50%) !important;
        margin: 20px 0;
    }
    
    .horizontal-timeline-line {
        display: none;
    }
}

@media (max-width: 768px) {
    .timeline-card-v3 .year-label {
        font-size: 1.8rem;
    }
    
    .timeline-card-v3 .node-title {
        font-size: 1.1rem;
    }
    
    .timeline-card-v3 .node-card-header {
        padding: 25px 20px;
    }
    
    .timeline-card-v3 .node-card-body {
        padding: 25px 20px;
    }
    
    .timeline-card-v3 .node-description {
        font-size: 0.95rem;
    }
    
    .timeline-card-v3 .node-features li {
        font-size: 0.9rem;
        padding: 10px 0;
    }
}

/* 发展历程横向时间轴V2 - 上下交错样式（保留旧版本兼容） */
.history-timeline-wrapper-v2 {
    overflow: visible;
    min-height: 700px;
    position: relative;
}

.horizontal-line {
    pointer-events: none;
    z-index: 1;
}

.timeline-nodes-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 时间节点包装器 */
.timeline-node-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

/* 上方卡片 - 错位向上 */
.timeline-node-wrapper.timeline-top {
    flex-direction: column;
    justify-content: flex-end;
    padding-bottom: 60px;
    margin-top: -100px;
}

.timeline-node-wrapper.timeline-top .timeline-node-card {
    margin-bottom: 25px;
}

.timeline-node-wrapper.timeline-top .timeline-dot {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

/* 下方卡片 - 错位向下 */
.timeline-node-wrapper.timeline-bottom {
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 60px;
    margin-top: 100px;
}

.timeline-node-wrapper.timeline-bottom .timeline-node-card {
    margin-top: 25px;
}

.timeline-node-wrapper.timeline-bottom .timeline-dot {
    position: absolute;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
}

/* 连接点圆点 */
.timeline-dot {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 5px solid white;
    box-shadow: 0 0 0 4px rgba(102,126,234,0.25), 0 5px 15px rgba(0,0,0,0.2);
    z-index: 10;
    position: relative;
}

.timeline-dot-current {
    width: 28px;
    height: 28px;
    animation: pulse-node 2s infinite;
    box-shadow: 0 0 0 5px rgba(245,87,108,0.3), 0 5px 20px rgba(245,87,108,0.4);
}

/* 时间节点卡片 */
.timeline-node-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    overflow: hidden;
    transition: all 0.4s ease;
    width: 100%;
}

.timeline-node-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 15px 45px rgba(0,0,0,0.2);
}

.node-card-current {
    border: 3px solid #f5576c;
    box-shadow: 0 10px 40px rgba(245,87,108,0.25);
}

.node-card-current:hover {
    box-shadow: 0 18px 50px rgba(245,87,108,0.35);
}

/* 卡片头部 */
.node-card-header {
    padding: 30px 20px;
    color: white;
    text-align: center;
}

.year-label {
    font-size: 2.2rem;
    font-weight: bold;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.node-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.5;
}

/* 卡片主体 */
.node-card-body {
    padding: 25px 20px;
}

.node-tag {
    text-align: center;
    margin-bottom: 18px;
}

.node-tag .badge {
    font-size: 1rem;
    padding: 8px 20px;
}

.node-description {
    font-size: 1rem;
    color: #555;
    margin: 0 0 20px 0;
    padding-bottom: 18px;
    border-bottom: 2px solid #e0e0e0;
    line-height: 1.7;
    font-weight: 400;
}

.node-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.node-features li {
    padding: 10px 0;
    font-size: 0.95rem;
    color: #444;
    line-height: 1.7;
    display: flex;
    align-items: flex-start;
}

.node-features li i {
    margin-right: 12px;
    margin-top: 4px;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.node-features li strong {
    font-weight: 600;
    color: #333;
}

/* 脉冲动画 */
@keyframes pulse-node {
    0%, 100% {
        box-shadow: 0 0 0 5px rgba(245,87,108,0.3), 0 5px 20px rgba(245,87,108,0.4);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(245,87,108,0.2), 0 5px 25px rgba(245,87,108,0.5);
        transform: scale(1.1);
    }
}

/* 响应式设计 */
@media (max-width: 1199px) {
    .year-label {
        font-size: 2rem;
    }
    
    .node-title {
        font-size: 1.15rem;
    }
    
    .node-features li {
        font-size: 0.9rem;
    }
}

@media (max-width: 991px) {
    .history-timeline-wrapper-v2 {
        min-height: auto;
        padding: 40px 0 !important;
    }
    
    .timeline-node-wrapper.timeline-top,
    .timeline-node-wrapper.timeline-bottom {
        padding: 0;
        margin-top: 0;
        margin-bottom: 50px;
    }
    
    .timeline-node-wrapper.timeline-bottom .timeline-dot,
    .timeline-node-wrapper.timeline-top .timeline-dot {
        position: relative;
        top: auto;
        bottom: auto;
        margin: 20px auto;
    }
    
    .horizontal-line {
        display: none;
    }
    
    .year-label {
        font-size: 1.8rem;
    }
    
    .node-title {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    .year-label {
        font-size: 1.6rem;
    }
    
    .node-title {
        font-size: 1rem;
    }
    
    .node-card-body {
        padding: 20px 15px;
    }
    
    .node-description {
        font-size: 0.95rem;
    }
    
    .node-features li {
        font-size: 0.85rem;
        padding: 8px 0;
    }
}

@media (max-width: 576px) {
    .history-timeline-wrapper-v2 {
        padding: 30px 0 !important;
    }
    
    .node-card-header {
        padding: 20px 15px;
    }
    
    .year-label {
        font-size: 1.5rem;
    }
    
    .node-title {
        font-size: 0.95rem;
    }
    
    .node-description {
        font-size: 0.9rem;
    }
    
    .node-features li {
        font-size: 0.8rem;
    }
}