* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: #0b0b0b;
    color: #f4f4f4;
    line-height: 1.8;
}

.about-main {
    padding: 40px 16px 64px;
}

.about-article {
    max-width: 920px;
    margin: 0 auto;
    background: #111;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 28px 22px;
}

h1 {
    margin: 0 0 18px;
    font-size: 2rem;
    line-height: 1.35;
}

h2 {
    margin: 26px 0 12px;
    font-size: 1.45rem;
    line-height: 1.45;
}

p {
    margin: 0 0 12px;
    color: rgba(255, 255, 255, 0.9);
}

ul {
    margin: 0 0 12px 20px;
    padding: 0;
}

li {
    margin: 0 0 8px;
}

.back-link {
    margin-top: 28px;
}

a {
    color: #7ab8ff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}