/* style.css - 复古风格 */

body {
    font-family: monospace;
    background-color: #1a1a1a;
    color: #c0c0c0;
    text-align: center;
    margin: 20px auto;
    line-height: 1.4;
    max-width: 800px;
}

h1 {
    color: #f0f0f0;
    font-size: 24px;
    margin: 20px 0;
}

h2 {
    color: #e0e0e0;
    font-size: 18px;
    margin: 25px 0 15px 0;
    border-bottom: 1px solid #333;
    padding-bottom: 5px;
}

h3 {
    color: #d0d0d0;
    font-size: 16px;
    margin: 20px 0 0 0;
}

h4 {
    color: #c0c0c0;
    font-size: 14px;
    margin: 15px 0 8px 0;
    font-style: italic;
}

p {
    margin: 10px 0;
    text-align: left;
    text-indent: 2em;
}

header p {
    text-align: center;
    text-indent: 0;
    font-style: italic;
    color: #a0a0a0;
}

a {
    color: #87ceeb;
    text-decoration: none;
}

a:hover {
    color: #add8e6;
    text-decoration: underline;
}

ul {
    display: inline-block;
    text-align: left;
    margin: 5px 0;
    padding-left: 20px;
}

li {
    margin: 8px 0 0 0;
    list-style-type: "> ";
}

pre {
    background-color: #111;
    color: #b0b0b0;
    padding: 15px;
    margin: 20px 0;
    border: 1px solid #333;
    font-family: 'Courier New', Consolas, Monaco, monospace;
    white-space: pre;
    overflow-x: auto;
    font-size: 12px;
    line-height: 1.2;
}

hr {
    border: none;
    border-top: 1px solid #333;
    margin: 10px auto;
    width: 50%;
}

img {
    border: 2px solid #333;
    margin: 20px 0 10px 0;
    max-width: 100%;
    height: auto;
}

strong {
    color: #f0f0f0;
}

section {
    margin: 30px 0;
    padding: 0 10px;
}

#download-and-demo {
    background-color: #141414;
    border: 1px solid #444;
    padding: 20px;
    margin: 20px auto 0 auto;
}


footer {
    margin: 40px auto 0 auto;
    padding: 20px 0;
    font-size: 12px;
    color: #666;
    text-align: center;
}

footer a {
    color: #888;
}

/* Roadmap 两栏布局 */
.roadmap-columns {
    display: flex;
    gap: 40px;
    text-align: center;
}

.roadmap-left,
.roadmap-right {
    flex: 1;
}

/* 在小屏幕上恢复单栏布局 */
@media (max-width: 600px) {
    .roadmap-columns {
        flex-direction: column;
        gap: 20px;
    }
}