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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

a {
    color: #3498db;
    text-decoration: none;
}

/* 导航条样式 */
.navbar {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
}

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

.nav-menu li {
    margin-left: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background 0.3s;
}

.nav-menu a:hover {
    background: rgba(255,255,255,0.1);
}

/* 主要内容区域 */
.section {
    min-height: 80vh;
    padding: 20px 2rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* 首页区域 */
#home {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 0.8rem 1.8rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.3);
}

.cta-button:hover {
    background: #d62c1a;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.4);
}

.cta-button:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(231, 76, 60, 0.3);
}

/* #67C090 颜色按钮样式 */
.green-button {
    display: inline-block;
    background: #67C090;
    color: white;
    padding: 0.8rem 1.8rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(103, 192, 144, 0.3);
}

.green-button:hover {
    background: #5AB082;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(103, 192, 144, 0.4);
}

.green-button:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(103, 192, 144, 0.3);
}

.green-button-outline {
    display: inline-block;
    background: transparent;
    color: #67C090;
    padding: 0.8rem 1.8rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid #67C090;
    cursor: pointer;
    transition: all 0.3s ease;
}

.green-button-outline:hover {
    background: #67C090;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(103, 192, 144, 0.3);
}

.green-button-small {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

.green-button-large {
    padding: 1rem 2.2rem;
    font-size: 1.1rem;
}

/* 专门的小绿色按钮样式 */
.small-green-btn {
    display: inline-block;
    background: #67C090;
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    font-size: 0.85rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 1px 4px rgba(103, 192, 144, 0.3);
    line-height: 1.2;
    min-height: auto;
}

.small-green-btn:hover {
    background: #5AB082;
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(103, 192, 144, 0.4);
}

.small-green-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(103, 192, 144, 0.3);
}

.small-green-btn-outline {
    display: inline-block;
    background: transparent;
    color: #67C090;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    font-size: 0.85rem;
    border: 1.5px solid #67C090;
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1.2;
}

.small-green-btn-outline:hover {
    background: #67C090;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(103, 192, 144, 0.3);
}

/* 超小尺寸按钮 */
.small-green-btn-xs {
    padding: 0.3rem 0.8rem;
    font-size: 0.75rem;
    border-radius: 4px;
}

/* 图标小按钮 */
.small-green-btn-icon {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.small-green-btn-icon::before {
    content: "→";
    font-weight: bold;
}

/* 禁用状态 */
.small-green-btn:disabled,
.small-green-btn-outline:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.small-green-btn:disabled:hover,
.small-green-btn-outline:disabled:hover {
    background: #67C090;
    transform: none;
    box-shadow: none;
}

.small-green-btn-outline:disabled:hover {
    background: transparent;
    color: #67C090;
}

/* 功能区 */
#features {
    background: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.feature-card {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #e9ecef;
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    display: block;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card h3 {
    color: #2c3e50;
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.feature-card p {
    color: #6c757d;
    line-height: 1.5;
    font-size: 0.95rem;
}

/* 资源区 */
#resources {
    background: white;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.resource-item {
    background: #f8f9fa;
    padding: 1.5rem 1rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #e9ecef;
}

.resource-icon {
    font-size: 2.5rem;
    margin-bottom: 0.8rem;
    display: block;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.resource-item h3 {
    color: #2c3e50;
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.resource-item p {
    color: #6c757d;
    line-height: 1.4;
    font-size: 0.9rem;
}

/* 关于区 */
#about {
    background: #ecf0f1;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.about-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.about-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.about-card p {
    color: #6c757d;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.about-features {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid #f0f0f0;
}

.feature-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.8rem;
}

.feature-badge {
    font-size: 1.2rem;
    margin-right: 0.8rem;
    min-width: 30px;
}

.company-info {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid #f0f0f0;
}

.info-item {
    margin-bottom: 0.8rem;
    color: #6c757d;
    line-height: 1.5;
}

.info-item strong {
    color: #2c3e50;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .about-card {
        padding: 1.5rem;
    }
    
    .about-card h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .about-grid {
        gap: 1.5rem;
    }
    
    .about-card {
        padding: 1.8rem;
    }
}

.about-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-content h2 {
    margin-bottom: 0.8rem;
}

.about-content p {
    margin-bottom: 0.8rem;
    line-height: 1.5;
}

/* 下载区 */
#download {
    background: #2c3e50;
    color: white;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.download-option {
    background: rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    backdrop-filter: blur(10px);
}

/* 关于区 */
#about {
    background: #ecf0f1;
}

.about-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

/* 页脚 */
footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem;
}

/* 联系功能区 */
#contact {
    background: #f8f9fa;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #f0f0f0;
}

.contact-icon {
    font-size: 1.8rem;
    margin-right: 1rem;
    min-width: 40px;
}

.contact-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.contact-item p {
    color: #6c757d;
    margin-bottom: 0.3rem;
    line-height: 1.4;
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #67C090;
    box-shadow: 0 0 0 2px rgba(103, 192, 144, 0.1);
}

.submit-btn {
    background: #67C090;
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
}

.submit-btn:hover {
    background: #5AB082;
    transform: translateY(-1px);
}

.submit-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}
.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.submit-btn {
    width: 100%;
    background: #3498db;
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: #2980b9;
}

.contact-info {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #f0f0f0;
}

.contact-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.contact-icon {
    font-size: 2rem;
    margin-right: 1rem;
    min-width: 50px;
}

.contact-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-item p {
    color: #6c757d;
    margin-bottom: 0.3rem;
    line-height: 1.4;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #2c3e50;
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-form,
    .contact-info {
        padding: 2rem;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-icon {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .resource-icon {
        font-size: 2.5rem;
        height: 60px;
    }
    
    .feature-icon {
        font-size: 3rem;
        height: 80px;
        margin-bottom: 1rem;
    }
    
    .feature-card {
        padding: 2rem 1.5rem;
    }
}

/* 平板设备适配 */
@media (max-width: 1024px) and (min-width: 769px) {
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .resource-icon {
        font-size: 2.8rem;
        height: 70px;
    }
    
    .feature-icon {
        font-size: 3.5rem;
        height: 90px;
    }
    
    .contact-grid {
        gap: 3rem;
    }
}