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

:root {
    /* 主色调 - 橙色 */
    --primary-color: rgb(253, 132, 46);
    --primary-light: rgb(243, 120, 40);
    --primary-dark: rgb(253, 132, 46);
    
    /* 次要色调 - 深灰 */
    --secondary-color: #2d2c2c;
    --secondary-light: #404040;
    --secondary-dark: #1c1b1b;
    
    /* 强调色 - 柔和的橙色 */
    --accent-color: #FC5329;
    --accent-light: #ffab91;
    --accent-dark: #c43a13;
    
    /* 中性色 - 参考 Apple 的灰度 */
    --light-color: #f5f5f7;
    --dark-color: #1d1d1f;
    --text-color: #424245;
    --border-color: #d2d2d7;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    --gradient-light: linear-gradient(135deg, #ffffff, var(--light-color));
    --gradient-dark: linear-gradient(135deg, var(--secondary-dark), var(--secondary-color));
    
    /* 阴影 - 轻阴影统一 */
    --box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    --box-shadow-hover: 0 4px 16px rgba(0,0,0,0.10);
    
    /* 过渡 */
    --transition: all 0.1s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

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

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

ul {
    list-style: none;
}

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

img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.1s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

.btn {
    padding: 16px 32px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    transition: var(--transition);
    display: inline-block;
    text-decoration: none;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    min-width: 200px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-hover);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: #fff;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: #fff;
}

.btn-secondary:hover {
    background-color: #1a2530;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

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

section {
    padding: 80px 0;
}

/* Header样式 */
#header {
    background-color: #404040;
    box-shadow: var(--box-shadow);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

#header,
#header * {
    color: #fff !important;
}

#header.scrolled {
    padding: 5px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

#header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    display: flex;
    align-items: center;
}
.logo img {
    width: 28px;
    height: 28px;
    margin-right: 10px;
    vertical-align: middle;
}
.logo a {
    font-size: 1.1rem;
    font-weight: 500;
    color: #fff !important;
    vertical-align: middle;
}

.nav-links {
    display: flex;
}

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

.nav-links a {
    color: #fff !important;
    font-weight: 500;
    position: relative;
}

.nav-links a.active,
.nav-links a:hover {
    color: var(--primary-color) !important;
}

.nav-links a.active::after,
.nav-links a:hover::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-menu.active i {
    transform: rotate(90deg);
}

.nav-links.active {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--secondary-color);
    padding: 20px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    z-index: 999;
}

.nav-links.active li {
    margin: 15px 0;
    text-align: center;
}

/* Hero区域样式 */
.hero {
    background: var(--gradient-primary);
    position: relative;
    overflow: visible;
    color: #fff;
    text-align: center;
    padding: 140px 0 80px; /* 增加底部内边距为重叠区域预留空间 */
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.blg_icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 0px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.blg_icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 服务部分样式 */
.services {
    background: #fff;
}

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

.service-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    padding: 40px 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* 特色部分样式 */
.why-choose-us {
    background: #fff;
}

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

.feature {
    background: #fff;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    padding: 40px 30px;
    text-align: center;
    display: flex;
    align-items: flex-start;
}

.feature-icon {
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 2rem;
    margin-right: 20px;
}

.feature-content h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* CTA部分样式 */
.cta {
    background: var(--gradient-secondary);
    position: relative;
    overflow: hidden;
    text-align: center;
    color: #fff;
    padding: 80px 0;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.cta .container {
    position: relative;
    z-index: 2;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.cta .btn-primary {
    background-color: #fff;
    color: #fff;
    background: var(--gradient-primary);
}

.cta .btn-primary:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* 主内容居中（marketing 页面使用） */
.content.container {
    position: relative;
    margin-top: -80px; /* 使用负边距使内容向上移动，与hero区域重叠 */
    padding-bottom: 0px;
    z-index: 10; /* 确保内容显示在hero区域之上 */
}

/* 特性卡片走马灯（3D 风格） */
.feature-carousel {
    width: 80%;
    max-width: 1100px;
    margin: 0 auto -40px;
    perspective: 1800px;
    overflow: hidden;
    min-height: 300px;
    position: relative;
}
.feature-cards {
    position: relative;
    width: 80%;
    height: 600px;
    margin: 0 auto;
    transform-style: preserve-3d;
    transform: translateZ(0);
}
.feature-card {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 224px;  /* 图片宽度 280px * 80% */
    margin-left: 0;
    margin-top: 0;
    background: transparent;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    backface-visibility: hidden;
    transform-style: preserve-3d;
    will-change: transform, opacity;
    transform-origin: center center;
    transform: translate3d(-50%, -50%, 0) scale(0.8);
    filter: blur(0);
    transition: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.feature-card img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    opacity: 0.6;
}

/* 激活卡片样式 — 居中弹出并置前 */
.feature-card.active {
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    opacity: 1.0;
    filter: blur(0);
    transform: translate3d(-50%, -50%, 100px) scale(1.0);
    overflow: hidden;
    padding: 0;
    border-radius: 16px;
}

/* 确保图片在所有状态下都保持圆角 */
.feature-card.active img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    opacity: 1.0;
}

@media (max-width: 900px) {
    .feature-cards { gap: 16px; }
    .feature-card { width: 60%; min-width: 240px; }
    .feature-card .card-img { height: 120px; }
}

@media (max-width: 600px) {
    .feature-cards { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 12px; }
    .feature-card { width: 80%; min-width: 200px; }
}

/* 修正 CTA 区布局错位，保证按钮居中 */
.cta .cta-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

/* Footer样式 */
#footer {
    background-color: var(--secondary-color);
    color: #fff;
    padding-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

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

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    font-size: 0.95rem;
}

.footer-bottom a {
    color: var(--primary-color);
}

.footer-bottom p {
    margin-bottom: 0;
}

@media (max-width: 600px) {
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

/* 关于我们页面样式 */
.page-header {
    background: linear-gradient(135deg, var(--secondary-color), #34495e);
    text-align: center;
    color: #fff;
    padding: 150px 0 80px;
}

.page-header h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
}

.about-intro {
    padding: 200px 0;
}

.about-section {
    background: var(--gradient-light);
}

.about-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.2rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 15px;
}

.about-image {
    background: var(--gradient-primary);
    border-radius: 8px;
    padding: 2rem;
    color: white;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.about-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    border-radius: 8px;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.mission-vision {
    background-color: var(--light-color);
}

.mission-vision-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.mission-card,
.vision-card,
.values-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    text-align: center;
}

.card-icon {
    font-size: 3rem;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}

.mission-card h3,
.vision-card h3,
.values-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* 支持页面样式 */
.support-section {
    margin-bottom: 60px;
    padding: 40px;
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--box-shadow);
}

.support-section h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-align: center;
}

/* 联系方式区域 */
.support-card {
    padding: 20px;
    text-align: center;
}

.support-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

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

.contact-item {
    display: grid;
    align-items: center;
    padding: 12px 16px;  /* 减小内边距 */
    background: var(--light-color);
    border-radius: 12px;
    transition: var(--transition);
}

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

.contact-item i {
    font-size: 1.5rem;  /* 减小图标大小 */
    color: var(--primary-color);
    margin-right: 16px;  /* 减小右边距 */
    min-width: 20px;  /* 固定最小宽度 */
    display: flex;  /* 使用flex布局 */
    align-items: center;   /* 垂直居中图标 */
    justify-content: center;  /* 水平居中 */
    padding-top: 2px;  /* 微调图标位置 */
}

.contact-info {
    text-align: center;
    flex: 1;  /* 占据剩余空间 */
}

.contact-info span {
    display: block;
    font-weight: 500;
    color: var(--secondary-color);
    margin-bottom: 4px;  /* 减小下边距 */
    font-size: 0.95rem;  /* 稍微减小字体大小 */
}

.contact-info a,
.contact-info p {
    color: var(--text-color);
    text-decoration: none;
}

/* FAQ卡片网格 */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.faq-card {
    background: var(--light-color);
    padding: 30px;
    border-radius: 12px;
    transition: var(--transition);
}

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

.faq-card .faq-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.faq-card h3 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.faq-card ul {
    list-style: none;
    padding: 0;
}

.faq-card ul li {
    margin: 10px 0;
    padding-left: 20px;
    position: relative;
    color: var(--text-color);
}

.faq-card ul li::before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

/* 资源卡片网格 */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.resource-card {
    background: var(--light-color);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow);
    background: var(--gradient-primary);
    color: #fff;
}

.resource-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: var(--transition);
}

.resource-card:hover i {
    color: #fff;
}

.resource-card h3 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    transition: var(--transition);
}

.resource-card p {
    color: var(--text-color);
    transition: var(--transition);
}

.resource-card:hover h3,
.resource-card:hover p {
    color: #fff;
}

/* 联系方式卡片样式 */
.contact-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.contact-card .card-icon {
    font-size: 3rem;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.contact-card p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 20px;
}

.contact-card .btn {
    display: inline-block;
    padding: 10px 25px;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 4px;
    text-decoration: none;
    transition: var(--transition);
}

.contact-card .btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
}

/* 删除表单相关样式 */
.form-container,
.form-group,
.form-group label,
.form-group input,
.form-group textarea,
.form-group.full-width,
.form-group input:focus,
.form-group textarea:focus,
.form-group input.error,
.form-group textarea.error,
.error-message,
.success-message,
button[type="submit"],
button[type="submit"]:disabled {
    display: none;
}

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

    .timeline-item {
        width: 100%;
        left: 0;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }

    .timeline::after {
        left: 10px;
    }

    .timeline-dot {
        left: 0;
    }

    .timeline-item:nth-child(even) .timeline-dot {
        left: 0;
    }
}

@media (max-width: 1200px) {
    .service-grid,
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu {
        display: block;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .form-group {
        width: 100%;
    }

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

    .about-image {
        margin-top: 2rem;
        min-height: 200px;
    }

    .service-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        margin-bottom: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .btn {
        padding: 8px 20px;
    }

    .section {
        padding: 60px 0;
    }
}

/* 动画效果 */
.animate-on-scroll {
    /* 取消滑动渐现动效：默认可见、无位移、无过渡 */
    opacity: 1 !important;
    transform: none !important;
    will-change: auto;
    transition: none !important;
    text-align: center;
}

.animate-on-scroll.animated {
    /* 保持与默认一致，避免 JS 添加类时产生变化 */
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
}

/* 占位图样式 */
.placeholder-image {
    background-color: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 500;
    line-height: 1.4;
    padding: 20px;
}

/* 删除团队相关样式 */
.team-grid,
.team-member,
.member-image,
.member-info,
.member-position,
.member-bio,
.map-container,
.map-placeholder {
    display: none;
}

/* 表单消息样式 */
.success-message,
.error-message {
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 4px;
    text-align: center;
    animation: fadeIn 0.3s ease-in-out;
}

.success-message {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.error-message {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* FAQ样式 */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    background-color: #fff;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

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

.faq-question {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.faq-question h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin: 0;
}

.faq-icon {
    color: var(--primary-color);
    transition: transform 0.1s ease;
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.1s ease, padding 0.1s ease;
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 500px;
}

.faq-item.active .faq-icon i {
    transform: rotate(45deg);
}

/* 优化联系方式卡片样式 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.contact-card {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.contact-card .card-icon {
    font-size: 3rem;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
    transition: var(--transition);
}

.contact-card:hover .card-icon {
    transform: scale(1.1);
}

.contact-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.contact-card p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 25px;
}

.contact-card .btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 4px;
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.contact-card .btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 删除未使用的样式 - 只隐藏团队和地图相关，不隐藏FAQ */
.team-grid,
.team-member,
.member-image,
.member-info,
.member-position,
.member-bio,
.map-container,
.map-placeholder {
    display: none;
}

/* Footer字体颜色灰色 */
#footer,
#footer * {
    color: #888 !important;
}

.footer-bottom a {
    color: #888 !important;
}

/* 动画效果 */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.animate-gradient {
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
}

.lang-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255,255,255,0.2);
  color: #fff;
  border: 1px solid #fff;
  border-radius: 6px;
  padding: 0.3rem 0.8rem;
  cursor: pointer;
  font-size: 0.9rem;
  backdrop-filter: blur(6px);
}

.lang-btn:hover {
  background: rgba(255,255,255,0.4);
}