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

body {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    min-height: 100vh;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #eee;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

.mainTitle {
    font-size: 2.2em;
    text-align: center;
    margin-bottom: 10px;
    color: #fff;
}

.subtitle {
    text-align: center;
    color: #aaa;
    margin-bottom: 30px;
}

.backLink {
    margin-bottom: 20px;
}

.backLink a {
    color: #64b5f6;
    text-decoration: none;
    font-size: 0.95em;
}

.backLink a:hover {
    text-decoration: underline;
}

.module {
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
}

.moduleTitle {
    font-size: 1.6em;
    color: #64b5f6;
    margin-bottom: 10px;
    border-bottom: 2px solid rgba(100, 181, 246, 0.3);
    padding-bottom: 10px;
}

.moduleDesc {
    color: #aaa;
    margin-bottom: 20px;
}

.subModule {
    margin-top: 20px;
}

.subModule h3 {
    color: #90caf9;
    font-size: 1.2em;
    margin-bottom: 15px;
}

.hint {
    color: #888;
    font-size: 0.9em;
    font-style: italic;
    margin-bottom: 15px;
}

.dataType {
    margin-bottom: 15px;
}

.linkStyle {
    text-decoration: none;
    display: block;
}

.typeCard {
    background: rgba(255,255,255,0.08);
    border-radius: 10px;
    padding: 18px 20px;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    text-decoration: none;
}

.typeCard:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(100, 181, 246, 0.5);
    transform: translateX(5px);
}

.typeIcon {
    font-size: 2em;
    margin-right: 20px;
}

.typeInfo h4 {
    color: #fff;
    font-size: 1.1em;
    margin-bottom: 5px;
    text-decoration: none !important;
}

.typeInfo p {
    color: #aaa;
    font-size: 0.9em;
    margin: 0;
    text-decoration: none !important;
}

.typeInfo {
    text-decoration: none !important;
}

.typeInfo p {
    color: #aaa;
    font-size: 0.9em;
    margin: 0;
}

.operLinks {
    margin-top: 15px;
}

.operLink {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.operLink:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}