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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

header {
    background: #2c3e50;
    padding: 1rem 0;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.logo {
    color: #fff;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.logo span {
    color: #3498db;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

#intro {
    padding: 3rem 2rem;
    border-radius: 15px;
    margin: 2rem 0;
}

#intro .intro-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 300;
}

#intro .intro-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.cta-button {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.2s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

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

section {
    margin: 2rem 0;
}

section h1 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #2c3e50;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #3498db;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.2s ease;
}

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

.service-card .icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.3rem;
}

.service-card h2 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.service-card p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.service-card a {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: #ecf0f1;
    color: #2c3e50;
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.8rem;
    transition: all 0.2s ease;
}

.service-card a:hover {
    background: #3498db;
    color: #fff;
}

.service-card a.disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.service-card a.disabled:hover {
    background: #ecf0f1;
    color: #2c3e50;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    display: flex;
    align-items: flex-start;
    text-decoration: none;
    color: #333;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tool-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.tool-card.placeholder {
    opacity: 0.6;
    cursor: default;
}

.tool-card.placeholder:hover {
    transform: none;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.tool-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-right: 1rem;
}

.tool-icon svg {
    width: 100%;
    height: 100%;
}

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

.tool-info h2 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.tool-info p {
    color: #7f8c8d;
    font-size: 0.85rem;
    line-height: 1.5;
}

#contact {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    background: #fff;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

.contact-item .icon {
    font-size: 1.5rem;
    margin-right: 1rem;
    color: #667eea;
}

.contact-item h3 {
    margin-bottom: 0.3rem;
    color: #2c3e50;
}

.contact-item p {
    color: #7f8c8d;
    margin: 0;
    line-height: 1.6;
}

footer {
    background: #2c3e50;
    color: #fff;
    padding: 1.5rem;
    text-align: center;
    margin-top: 2rem;
}

footer p {
    font-size: 0.9rem;
    opacity: 0.8;
}

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