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

:root {
    --bg: #f2f2f2;
    --paper: #eaeaea;
    --text: #2b2b2b;
    --text-soft: #5a5a5a;
    --rule: #000000;
    --link: #0000EE;
    --link-hover: #0000BB;
    --code-bg: #e4e4e4;
    --code-border: #c8c8c8;
    --blockquote-border: #ababab;
    --table-head-bg: #dcdcdc;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
    line-height: 1.75;
    color: var(--text);
    background-color: var(--bg);
    padding: 0;
    margin: 0;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 88px 72px 96px;
}

@media (max-width: 768px) {
    .container {
        padding: 48px 22px 56px;
    }
}

/* Markdown Content Styling */
.markdown-content {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text);
    letter-spacing: 0.0025em;
}

.markdown-content h1 {
    font-size: clamp(2rem, 4.5vw, 2.7rem);
    font-weight: 700;
    line-height: 1.25;
    margin-top: 1.8em;
    margin-bottom: 0.35em;
    color: #1f1f1f;
    letter-spacing: -0.01em;
}

.markdown-content h2 {
    font-size: clamp(1.55rem, 3.5vw, 2.05rem);
    font-weight: 600;
    line-height: 1.35;
    margin-top: 1.7em;
    margin-bottom: 0.4em;
    color: #232323;
    letter-spacing: -0.005em;
}

.markdown-content h3 {
    font-size: clamp(1.3rem, 2.8vw, 1.55rem);
    font-weight: 600;
    line-height: 1.4;
    margin-top: 1.4em;
    margin-bottom: 0.35em;
    color: #282828;
}

.markdown-content h4 {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.45;
    margin-top: 1.2em;
    margin-bottom: 0.3em;
    color: #282828;
}

.markdown-content p {
    margin-top: 0.78em;
    margin-bottom: 0.78em;
    color: var(--text);
}

.markdown-content ul,
.markdown-content ol {
    margin-top: 0.7em;
    margin-bottom: 0.8em;
    padding-left: 1.45em;
}

.markdown-content li {
    margin-top: 0.3em;
    margin-bottom: 0.3em;
    padding-left: 0.15em;
}

.markdown-content ul {
    list-style-type: disc;
}

.markdown-content ol {
    list-style-type: decimal;
}

.markdown-content blockquote {
    border-left: 2px solid var(--blockquote-border);
    padding: 0.15em 0 0.15em 1em;
    margin: 1em 0;
    color: var(--text-soft);
    font-style: italic;
}

.markdown-content code {
    background-color: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 5px;
    padding: 0.14em 0.36em;
    font-size: 0.84em;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
}

.markdown-content pre {
    background-color: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 8px;
    padding: 1em 1.1em;
    overflow-x: auto;
    margin: 1.2em 0;
}

.markdown-content pre code {
    background-color: transparent;
    border: none;
    padding: 0;
    font-size: 0.86em;
}

.markdown-content a {
    color: var(--link);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    transition: color 0.25s ease;
}

.markdown-content a:hover {
    color: var(--link-hover);
}

.markdown-content hr {
    border: none;
    border-top: 1px solid var(--rule);
    margin: 2.1em 0;
}

.markdown-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1.25em 0;
    font-size: 0.95em;
    background: transparent;
    table-layout: fixed;
}

.markdown-content table th,
.markdown-content table td {
    border: none;
    border-bottom: 1px solid var(--rule);
    padding: 1.3em 0 8em;
    text-align: left;
    vertical-align: top;
}

.markdown-content table th {
    background: none;
    font-weight: 600;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    padding: 0.7em 0;
}

.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.65em auto;
    display: block;
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.15);
}

/* Blur-up image loading */
.img-blur-wrap {
    position: relative;
    overflow: hidden;
    margin: 1.65em auto;
    max-width: 100%;
}
.img-blur-wrap .img-blur {
    display: block;
    width: 100%;
    height: auto;
    filter: blur(20px);
    transition: opacity 0.25s ease;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
}
.img-blur-wrap .img-blur.hidden {
    opacity: 0;
}
.img-blur-wrap .img-full {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: auto;
    opacity: 0;
    transition: opacity 0.25s ease;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
}
.img-blur-wrap .img-full.loaded {
    opacity: 1;
}

/* YouTube embed container */
.youtube-embed {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    margin: 1.65em 0;
}

.youtube-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.markdown-content strong {
    font-weight: 700;
}

.markdown-content em {
    font-style: italic;
}

/* First element spacing */
.markdown-content > *:first-child {
    margin-top: 0;
}

/* Content fade-in */
.markdown-content {
    opacity: 0;
    transition: opacity 0.25s ease;
}

.markdown-content.loaded {
    opacity: 1;
}

.loading {
    visibility: hidden;
}

/* Hover preview image behind table */
@media (hover: hover) and (pointer: fine) {
    .hover-preview {
        position: absolute;
        pointer-events: none;
        z-index: -1;
        width: 44vw;
        max-width: 560px;
        opacity: 0;
        transition: opacity 0.25s ease;
    }
    .hover-preview.visible {
        opacity: 1;
    }
    .hover-preview-blur,
    .hover-preview-full {
        display: block;
        width: 100%;
        height: auto;
    }
    .hover-preview-full {
        position: absolute;
        top: 0;
        left: 0;
    }
    .hover-preview {
        overflow: hidden;
    }
    .hover-preview-blur {
        filter: blur(20px);
        transition: opacity 0.25s ease;
    }
    .hover-preview-blur.hidden {
        opacity: 0;
    }
    .hover-preview-full {
        opacity: 0;
        transition: opacity 0.25s ease;
    }
    .hover-preview-full.loaded {
        opacity: 1;
    }
}