/* 全局样式 */
:root {
    --primary-color: #6c5ce7;
    --secondary-color: #a29bfe;
    --accent-color: #fd79a8;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #fff;
    --light-bg: #f8f9fa;
    --border-color: #e1e4e8;
    --gradient-start: #a29bfe;
    --gradient-end: #6c5ce7;
}

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

h2 {
    font-size: 32px;
    text-align: center;
    margin-bottom: 20px;
}

.section-desc {
    text-align: center;
    color: var(--light-text);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: #5649c0;
    /* transform: translateY(-2px); */
    box-shadow: 0 5px 15px rgba(108, 92, 231, 0.3);
}

.btn-outline {
    border: 1px solid var(--border-color);
    color: var(--text-color);
    background: white;
}

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

.btn-outline-blue {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    background: white;
}

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

.btn-outline-purple {
    border: 1px solid #a29bfe;
    color: #6c5ce7;
    background: white;
}

.btn-outline-purple:hover {
    background: #a29bfe;
    color: white;
}

.btn-text {
    color: var(--primary-color);
    padding: 12px 0;
}

.btn-text:hover {
    text-decoration: underline;
}

/* 导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: transparent;
    transition: all 0.3s ease;
    z-index: 1000;
    padding: 15px 0;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.logo img {
    height: 30px;
}

.main-nav ul {
    display: flex;
}

.main-nav li {
    margin: 0 15px;
}

.main-nav a {
    color: var(--text-color);
    font-size: 14px;
    font-weight: 500;
}

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

.main-nav i {
    font-size: 12px;
    margin-left: 5px;
}

/* 下拉菜单样式 */
.main-nav li {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1001;
    margin-top: 10px;
}

.main-nav li:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown a {
    display: block;
    padding: 12px 20px;
    color: var(--text-color);
    font-size: 14px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.dropdown a:last-child {
    border-bottom: none;
}

.dropdown a:hover {
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary-color);
}

.header-right .login {
    color: var(--primary-color);
    font-weight: 500;
    font-size: 14px;
}

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

/* 主横幅 */
.hero {
    height: 70vh; /* 占屏幕高度的60% */
    background: url('../images/banner_bg.png') no-repeat center center;
    background-size: cover;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
}

.hero .container {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-content {
    padding: 0 20px;
}

.hero .subtitle {
    color: var(--light-text);
    margin-bottom: 15px;
    font-size: 18px;
}

.hero h1 {
    font-size: 68px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 .highlight {
    color: var(--primary-color);
}

.hero .features {
    color: var(--light-text);
    margin-bottom: 30px;
    font-size: 18px;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

/* 客户标志 */
.clients {
    padding: 40px 0;
    background: white;
}

.client-logos {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.client-name {
    font-size: 18px;
    font-weight: bold;
    color: #999;
    margin: 10px 20px;
}

/* 高校开发者扶持计划 */
.developer-support {
    padding: 80px 0;
    background: linear-gradient(135deg, #e8eaf6 0%, #f3e5f5 100%);
    position: relative;
    overflow: hidden;
}

.developer-support::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    z-index: 1;
}

.developer-support::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -10%;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    z-index: 1;
}

.developer-support .container {
    position: relative;
    z-index: 2;
    text-align: center;
}

.developer-support h2 {
    font-size: 32px;
    font-weight: 500;
    margin-bottom: 24px;
    color: #333;
}

.developer-support .section-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 48px;
    line-height: 1.6;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.apply-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.btn-primary {
    display: inline-block;
    padding: 12px 32px;
    background-color: #000;
    color: white;
    text-decoration: none;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #333;
    color: white;
}

.btn-secondary {
    display: inline-block;
    padding: 12px 32px;
    background-color: transparent;
    color: #666;
    text-decoration: none;
    border: 1px solid #ddd;
    border-radius: 24px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: #f5f5f5;
    color: #333;
}

@media (max-width: 768px) {
    .developer-support {
        padding: 60px 0;
    }
    
    .developer-support h2 {
        font-size: 28px;
    }
    
    .apply-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 200px;
    }
}

/* API一体化平台 */
.api-platform {
    padding: 80px 0;
    background: var(--light-bg);
}

.platform-image {
    margin-top: 40px;
    text-align: center;
}

/* 功能模块 */
.features-section {
    padding: 80px 0;
    background: white;
}

.features-section .container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.feature-card {
    border: 1px solid #E2E1F6;
    border-radius: 10px;
    padding: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    color: var(--text-color);
    box-shadow: 0px 4px 8px 0px rgba(91, 104, 113, 0.08);
}

.feature-card:nth-child(1) {
    background: linear-gradient(180deg, #EFEDFF 0%, rgba(255, 255, 255, 0.00) 100%), #FFF;
}

.feature-card:nth-child(2) {
    background: linear-gradient(180deg, #FFE8F0 0%, rgba(255, 255, 255, 0.00) 100%), #FFF;
}

.feature-card:nth-child(3) {
    background: linear-gradient(180deg, #E8F4FF 0%, rgba(255, 255, 255, 0.00) 100%), #FFF;
}

.feature-card:nth-child(4) {
    background: linear-gradient(180deg, #E8FFE8 0%, rgba(255, 255, 255, 0.00) 100%), #FFF;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.1) 0%, rgba(162, 155, 254, 0.1) 100%);
}

.feature-icon i {
    width: 32px;
    height: 32px;
    stroke: var(--primary-color);
    stroke-width: 1.5;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--light-text);
    font-size: 14px;
}

.new-tag {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent-color);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

/* 团队协作 */
.team-collaboration {
    padding: 80px 0;
    background: var(--light-bg);
}

.collaboration-cards {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-top: 40px;
}

.collab-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    width: 350px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.collab-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.price-tag {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
}

.card-desc {
    color: var(--light-text);
    font-size: 14px;
    margin-bottom: 20px;
}

.feature-list {
    margin-bottom: 30px;
}

.feature-list li {
    margin-bottom: 10px;
    font-size: 14px;
    display: flex;
    align-items: center;
}

.feature-list i {
    color: var(--primary-color);
    margin-right: 10px;
}

.collab-card .btn {
    margin-right: 10px;
}

/* 行业服务 */
.industry-service {
    padding: 80px 0;
    background: white;
}

.industry-tabs {
    margin-top: 40px;
}

.industry-tab-nav {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.industry-tag {
    padding: 8px 20px;
    border-radius: 25px;
    background: #f8f9fa;
    color: var(--light-text);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.industry-tag:hover {
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary-color);
}

.industry-tag.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 8px rgba(108, 92, 231, 0.3);
}

.industry-content {
    position: relative;
    min-height: 400px;
}

.industry-card {
    display: none;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.3s ease;
}

.industry-card.active {
    display: flex;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.industry-card-image {
    flex: 1;
    min-height: 300px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f0ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0px;
}

.industry-card-image img {
    max-width: 100%;
    border-radius: 12px;
    object-fit: contain;
}

.industry-card-content {
    flex: 1;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.industry-card-content h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 600;
}

.industry-card-content p {
    color: var(--light-text);
    margin-bottom: 30px;
    font-size: 15px;
    line-height: 1.8;
}

.industry-buttons {
    display: flex;
    align-items: center;
    gap: 20px;
}

.industry-buttons .btn {
    border-radius: 25px;
}

.industry-buttons .btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #a29bfe 100%);
    padding: 12px 24px;
}

.industry-buttons .btn-text {
    color: var(--primary-color);
    font-weight: 500;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .industry-card.active {
        flex-direction: column;
    }
    
    .industry-card-image {
        min-height: 200px;
    }
    
    .industry-card-content {
        padding: 30px 20px;
    }
    
    .industry-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
}

/* 用户评价 */
.testimonials {
    padding: 80px 0;
    background: var(--light-bg);
}

.testimonial-slider {
    position: relative;
    margin-top: 40px;
}

.testimonial-cards {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 20px;
    scroll-snap-type: x mandatory;
    scrollbar-width: none; /* Firefox */
}

.testimonial-cards::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.testimonial-card {
    flex: 0 0 calc(33.333% - 20px);
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    scroll-snap-align: start;
}

.user-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: 20px;
}

.testimonial-content p {
    color: var(--light-text);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.user-info {
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
}

.user-name {
    font-weight: 600;
    margin-bottom: 5px;
}

.user-title, .user-company {
    font-size: 12px;
    color: var(--light-text);
}

.slider-dots {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    margin: 0 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: var(--primary-color);
}

/* 认证信息 */
.certifications {
    padding: 80px 0;
    background: white;
}

.certification-list {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-top: 80px;
}

.certification-item {
    flex: 0 0 calc(25% - 30px);
    text-align: center;
    margin-bottom: 30px;
}

.cert-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
    background: var(--light-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert-icon img {
    width: 40px;
    height: 40px;
}

.cert-name {
    font-size: 14px;
    color: var(--text-color);
    font-weight: 500;
}

/* 页脚 */
.footer {
    background: #f8f9fa;
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-col {
    flex: 1;
    min-width: 200px;
    margin-bottom: 30px;
}

.footer-logo {
    margin-bottom: 15px;
}

.footer-logo img {
    height: 30px;
}

.footer-desc {
    color: var(--light-text);
    font-size: 14px;
    margin-bottom: 20px;
    max-width: 250px;
}

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

.social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 18px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 10px rgba(108, 92, 231, 0.2);
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text-color);
}

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

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

.footer-links a {
    color: var(--light-text);
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.copyright {
    color: var(--light-text);
    font-size: 14px;
    margin-bottom: 15px;
}

.footer-bottom-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: var(--light-text);
    font-size: 14px;
    transition: color 0.3s ease;
}

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

@media (max-width: 992px) {
    .footer-top {
        flex-direction: column;
    }
    
    .footer-col {
        margin-bottom: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* 侧边栏联系方式 */
.side-contact {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-item {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.contact-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
}

.contact-icon.purple {
    background: #6c5ce7;
}

.contact-icon.orange {
    background: #fd79a8;
}

.contact-icon.blue {
    background: #0984e3;
}

.contact-icon.green {
    background: #00b894;
}

.contact-icon.red {
    background: #ff7675;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
    }
    
    .hero-text {
        padding-right: 0;
        margin-bottom: 40px;
        text-align: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .features-section .container {
        grid-template-columns: 1fr;
    }
    
    .collaboration-cards {
        flex-direction: column;
        align-items: center;
    }
    
    .case-container {
        flex-direction: column;
    }
    
    .testimonial-card {
        flex: 0 0 calc(100% - 20px);
    }
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* 立即体验下拉框样式 */
.experience-dropdown {
    position: relative;
    display: flex;
}

.dropdown-toggle {
    border: none;
    background: var(--primary-color);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-toggle:hover {
    background: #5649c0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(108, 92, 231, 0.3);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(0, 0, 0, 0.1);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    margin-top: 8px;
    overflow: hidden;
}

.experience-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    gap: 12px;
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary-color);
}

.dropdown-item i {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.dropdown-item .fab.fa-android {
    color: #3DDC84;
}

.dropdown-item .fab.fa-apple {
    color: #000;
}

.dropdown-item .fas.fa-globe {
    color: #0984e3;
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        z-index: 999;
        padding: 20px;
        padding-left: 40px;
        overflow-y: auto;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    }
    
    .main-nav.mobile-active {
        left: 0;
    }
    
    /* 移动端菜单遮罩层 */
    .main-nav::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        /* background: rgba(0, 0, 0, 0.3); */
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: -1;
    }
    
    .main-nav.mobile-active::before {
        opacity: 1;
        visibility: visible;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    .main-nav li {
        margin: 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
        opacity: 0;
        transform: translateX(-20px);
        animation: slideInLeft 0.3s ease forwards;
    }
    
    .main-nav.mobile-active li {
        animation-delay: calc(var(--item-index, 0) * 0.1s);
    }
    
    .main-nav li:nth-child(1) { --item-index: 1; }
    .main-nav li:nth-child(2) { --item-index: 2; }
    .main-nav li:nth-child(3) { --item-index: 3; }
    .main-nav li:nth-child(4) { --item-index: 4; }
    .main-nav li:nth-child(5) { --item-index: 5; }
    
    .main-nav li:last-child {
        border-bottom: none;
    }
    
    .main-nav a {
        display: block;
        padding: 18px 0;
        font-size: 16px;
        font-weight: 500;
        transition: all 0.3s ease;
        border-radius: 8px;
        margin: 0 -10px;
        padding-left: 10px;
        padding-right: 10px;
    }
    
    .main-nav a:hover {
        background: rgba(108, 92, 231, 0.08);
        color: var(--primary-color);
        transform: translateX(5px);
    }
    
    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: rgba(108, 92, 231, 0.05);
        margin: 10px 0;
        border-radius: 8px;
        padding: 10px;
    }
    
    .dropdown a {
        padding: 12px 15px;
        font-size: 14px;
        color: #666;
        margin: 2px 0;
    }
    
    .dropdown a:hover {
        background: rgba(108, 92, 231, 0.1);
        color: var(--primary-color);
        transform: translateX(3px);
    }
    
    @keyframes slideInLeft {
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-6px, 6px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-6px, -6px);
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero .subtitle {
        font-size: 16px;
    }
    
    .hero .features {
        font-size: 16px;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }
    
    .experience-dropdown {
        width: 100%;
    }
    
    .dropdown-toggle {
        width: 100%;
        justify-content: center;
    }
    
    .dropdown-menu {
        width: 100%;
        left: 0;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .header .container {
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 28px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .dropdown-item {
        padding: 10px 14px;
        font-size: 14px;
    }

    #docs {
        width: 100%;
    }

    .login {
        display: none;
    }
}

/* ========== 动画效果 ========== */

/* 关键帧动画定义 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-200deg);
    }
    to {
        opacity: 1;
        transform: rotate(0deg);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(100px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 滚动触发动画类 */
.fade-in-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
}

.zoom-in {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.zoom-in.visible {
    opacity: 1;
    transform: scale(1);
}

.rotate-in {
    opacity: 0;
    transform: rotate(-180deg);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.rotate-in.visible {
    opacity: 1;
    transform: rotate(0deg);
}

/* 延迟动画 */
.fade-delay-1 { transition-delay: 0.1s; }
.fade-delay-2 { transition-delay: 0.2s; }
.fade-delay-3 { transition-delay: 0.3s; }
.fade-delay-4 { transition-delay: 0.4s; }
.fade-delay-5 { transition-delay: 0.5s; }
.fade-delay-6 { transition-delay: 0.6s; }
.fade-delay-7 { transition-delay: 0.7s; }
.fade-delay-8 { transition-delay: 0.8s; }

/* 页面加载动画 */
.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    animation: fadeInUp 1.2s ease-out 0.3s both;
}

.hero .subtitle {
    animation: fadeInUp 1s ease-out 0.1s both;
}

.hero .features {
    animation: fadeInUp 1s ease-out 0.5s both;
}

.cta-buttons {
    animation: fadeInUp 1s ease-out 0.7s both;
}

/* 导航栏动画 */
.header {
    animation: slideInDown 0.8s ease-out;
}

.main-nav li {
    animation: fadeIn 0.6s ease-out both;
}

.main-nav li:nth-child(1) { animation-delay: 0.1s; }
.main-nav li:nth-child(2) { animation-delay: 0.2s; }
.main-nav li:nth-child(3) { animation-delay: 0.3s; }
.main-nav li:nth-child(4) { animation-delay: 0.4s; }
.main-nav li:nth-child(5) { animation-delay: 0.5s; }

/* 功能卡片动画 */
.feature-card {
    animation: fadeInUp 0.8s ease-out both;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

.feature-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    animation: pulse 2s infinite;
}

/* 协作卡片动画 */
.collab-card {
    animation: fadeInUp 0.8s ease-out both;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.collab-card:nth-child(1) { animation-delay: 0.1s; }
.collab-card:nth-child(2) { animation-delay: 0.3s; }
.collab-card:nth-child(3) { animation-delay: 0.5s; }

.collab-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(108, 92, 231, 0.2);
}

/* 用户评价卡片动画 */
.testimonial-card {
    animation: fadeInUp 0.8s ease-out both;
    transition: all 0.4s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.user-avatar {
    transition: all 0.4s ease;
}

.testimonial-card:hover .user-avatar {
    transform: scale(1.1);
    animation: float 3s ease-in-out infinite;
}

/* 认证图标动画 */
.certification-item {
    animation: fadeInUp 0.8s ease-out both;
    transition: all 0.4s ease;
}

.certification-item:nth-child(1) { animation-delay: 0.1s; }
.certification-item:nth-child(2) { animation-delay: 0.2s; }
.certification-item:nth-child(3) { animation-delay: 0.3s; }
.certification-item:nth-child(4) { animation-delay: 0.4s; }

.certification-item:hover {
    transform: translateY(-5px);
}

.cert-icon {
    transition: all 0.4s ease;
}

.certification-item:hover .cert-icon {
    transform: scale(1.1);
    animation: rotateIn 0.6s ease;
}

/* 行业标签动画 */
.industry-tag {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.industry-tag:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(108, 92, 231, 0.3);
}

.industry-tag.active {
    animation: bounceIn 0.6s ease;
}

/* 按钮悬停动画 */
.btn {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(108, 92, 231, 0.4);
}

.btn-outline:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* 社交链接动画 */
.social-link {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.social-link:hover {
    transform: translateY(-5px) rotate(360deg);
    box-shadow: 0 10px 20px rgba(108, 92, 231, 0.3);
}

/* 下拉菜单动画 */
.dropdown {
    animation: fadeInUp 0.3s ease-out;
}

.dropdown a {
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}


/* 图片悬停效果 */
.platform-image img,
.industry-card-image img {
    transition: all 0.4s ease;
}

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

.industry-card:hover .industry-card-image img {
    transform: scale(1.03);
}

/* 加载动画 */
@keyframes loading {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.loading {
    animation: loading 1s linear infinite;
}

/* 文字打字机效果 */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    0%, 50% {
        border-color: transparent;
    }
    51%, 100% {
        border-color: var(--primary-color);
    }
}

.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    animation: typing 3s steps(40, end), blink 0.75s step-end infinite;
}

/* 背景动画 */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(108, 92, 231, 0.1) 0%, rgba(162, 155, 254, 0.1) 100%);
    animation: float 6s ease-in-out infinite;
    pointer-events: none;
}

/* 粒子效果背景 */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(108, 92, 231, 0.3);
    border-radius: 50%;
    animation: particleFloat 8s linear infinite;
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) translateX(0) rotate(0deg);
        opacity: 0;
    }
    5% {
        opacity: 0.8;
    }
    95% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(-20vh) translateX(50px) rotate(360deg);
        opacity: 0;
    }
}

/* 响应式动画调整 */
@media (max-width: 768px) {
    .fade-in-up,
    .fade-in-left,
    .fade-in-right,
    .zoom-in,
    .rotate-in {
        transform: none;
        opacity: 1;
    }
    
    .feature-card:hover,
    .collab-card:hover,
    .testimonial-card:hover {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
}

/* 减少动画效果（用户偏好） */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}