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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

header {
    position: relative;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e6e6e6;
    z-index: 1000;
    padding: 10px 0;
}

.header-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    margin: 0 auto;
}

.header-container img {
    max-width: 100%;
    height: auto;
}

nav {
    /* display: flex;
    justify-content: center;
    gap: 32px; */
    padding-top: 8px;
    color: #8d8d8d;
}

nav a {
    color: #8d8d8d;
    text-decoration: none;
    /* font-size: 15px; */
    /* font-weight: 400; */
    transition: color 0.2s ease;
}

main {
    width: 50%;
    margin: 30px auto 0;
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.article-item {
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
}

.article-item:last-child {
    border-bottom: none;
}

.article-item h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #000;
    line-height: 1.3;
}

.article-item a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

.article-item a:hover {
    color: #666;
}

.article-item .excerpt {
    font-size: 16px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.5;
}

.article-item .meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #999;
}

.article-item .meta span {
    position: relative;
}

.article-item .meta span:not(:last-child)::after {
    content: "·";
    position: absolute;
    right: -7px;
}

.publish-date {
    font-size: 14px;
    color: #666;
}

.hero-article h1 {
    font-size: 22px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        padding: 0 15px;
    }

    main {
        padding: 10px 10px;
        margin-top: 20px;
        width: 80%;
    }

    .article-content {
        font-size: 17px;
    }

    .article-content h2 {
        font-size: 24px;
    }

    .article-item h2 {
        font-size: 20px;
    }
}

/* Reading Progress Bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0px;
    background: #999999;
    z-index: 1001;
}

footer {
    background-color: #ffffff;
    border-top: 1px solid #e6e6e6;
    /* padding: 40px 0; */
    padding: 10px 0;
    /* margin-top: 60px; */
    margin-top: 10px;
}

.footer-container {
    max-width: 680px;
    margin: 0 auto;
    /* padding: 0 24px; */
    padding: 0 20px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    /* gap: 24px; */
    gap: 20px;
}

.social-media {
    display: flex;
    gap: 16px;
    align-items: center;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: #6b6b6b;
    text-decoration: none;
    transition: all 0.15s ease-in-out;
    background-color: transparent;
}

.social-icon:hover {
    color: #242424;
    background-color: #f2f2f2;
}

.social-icon svg {
    width: 20px;
    height: 20px;
}

.copyright {
    text-align: center;
    color: #6b6b6b;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.4;
}

.copyright p {
    margin: 4px 0;
}

.company-name {
    color: #242424;
    font-weight: 500;
}

.divider {
    width: 100%;
    height: 1px;
    background-color: #e6e6e6;
    margin: 10px 0;
}

@media (max-width: 680px) {
    .footer-container {
        padding: 0 15px;
    }
    
    footer {
        padding: 30px 0;
        margin-top: 10px;
    }
    
    .social-media {
        gap: 12px;
    }
    
    .social-icon {
        width: 36px;
        height: 36px;
    }
    
    .social-icon svg {
        width: 18px;
        height: 18px;
    }
    
    .footer-content {
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .copyright {
        font-size: 13px;
    }
    
    .social-media {
        gap: 10px;
    }
}