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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.8;
    color: #1a1a1a;
    background: #ffffff;
    min-height: 100vh;
    padding: 40px 20px;
    font-size: 18px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    color: #111;
    font-weight: 700;
    letter-spacing: -0.02em;
}

a {
    color: #2563eb;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

header {
    background: transparent;
    padding: 4rem 0 2rem 0;
    margin-bottom: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title {
    text-align: left;
    margin-bottom: 0;
}

.header-title h1 {
    font-size: 3.5rem;
    margin-bottom: 0;
}

.header-link {
    color: #555;
    font-size: 1.1rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s ease;
}

.header-link:hover {
    color: #000;
    text-decoration: underline;
}

main {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    gap: 4rem;
    align-items: flex-start;
}

#content {
    flex: 2;
    min-width: 0;
}

article {
    background: transparent;
    padding: 0;
    margin-bottom: 4rem;
    border-radius: 0;
    box-shadow: none;
}

article:hover {
    transform: none;
    box-shadow: none;
}

article h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    border-bottom: none;
    color: #111;
}

article h3 {
    font-size: 1.8rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: #333;
}

article img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0 2rem 0;
    box-shadow: none;
}

article p {
    margin-bottom: 1rem;
    color: #444;
    font-size: 1.125rem;
}

aside {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-top: 1.5rem;
}

.profile-card {
    background: transparent;
    padding: 0;
    box-shadow: none;
    text-align: left;
    border-radius: 0;
}

.profile-card img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin-bottom: 1.5rem;
    box-shadow: none;
    border: none;
}

.profile-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.profile-card p {
    color: #666;
    font-size: 1rem;
}

.aside-article-card {
    background: transparent;
    padding: 1rem;
    box-shadow: none;
    border-radius: 8px;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    border: 1px solid #1a1a1a;
    text-decoration: none;
    transition: all 0.2s ease;
}

.aside-article-card:hover {
    transform: translateY(-2px);
    background-color: #f9f9f9;
    box-shadow: 4px 4px 0px #1a1a1a;
}

.aside-article-card img {
    width: 100px;
    height: 75px;
    border-radius: 4px;
    object-fit: cover;
}

.aside-article-info h4 {
    font-size: 1.1rem;
    color: #111;
    margin: 0;
    line-height: 1.4;
}

.aside-article-info h4:hover {
    text-decoration: underline;
    color: #2563eb;
    cursor: pointer;
}

footer {
    max-width: 900px;
    margin: 4rem auto 0;
    border-top: 1px solid #eee;
    padding: 3rem 0;
    text-align: left;
    background: transparent;
    box-shadow: none;
    color: #888;
    font-size: 0.9rem;
}

@media screen and (max-width: 768px) {
    body {
        padding: 20px;
    }

    header {
        padding-top: 2rem;
        text-align: center;
    }

    .header-title {
        text-align: center;
    }

    .header-title h1 {
        font-size: 2.5rem;
    }

    nav ul {
        justify-content: center;
    }

    main {
        flex-direction: column;
        gap: 3rem;
    }

    article h2 {
        font-size: 2rem;
    }

    aside {
        order: -1;
        border-bottom: 1px solid #eee;
        padding-bottom: 2rem;
        margin-bottom: 2rem;
    }

    .profile-card {
        display: flex;
        align-items: center;
        gap: 1.5rem;
        text-align: left;
    }

    .profile-card img {
        margin-bottom: 0;
        width: 80px;
        height: 80px;
    }
}