:root {
    color-scheme: light dark;
    --bg: #FFFFFF;
    --surface: #F5F5F5;
    --surface-raised: #FFFFFF;
    --text: #222224;
    --muted: #5E6470;
    --accent: #2E96F9;
    --accent-soft: rgba(46, 150, 249, 0.10);
    --border: rgba(34, 34, 36, 0.10);
    --glow: rgba(46, 150, 249, 0.12);
    --dot: rgba(46, 150, 249, 0.08);
    --shadow: 0 14px 40px rgba(34, 34, 36, 0.07);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #000000;
        --surface: #242424;
        --surface-raised: #2E2E2E;
        --text: #CFCFCF;
        --muted: #9AA1AC;
        --accent: #2E96F9;
        --accent-soft: rgba(46, 150, 249, 0.16);
        --border: rgba(207, 207, 207, 0.14);
        --glow: rgba(46, 150, 249, 0.16);
        --dot: rgba(46, 150, 249, 0.12);
        --shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    background-color: var(--bg);
    background-image:
        radial-gradient(circle at 12% -8%, var(--glow), transparent 42%),
        radial-gradient(circle, var(--dot) 1px, transparent 1px);
    background-repeat: no-repeat, repeat;
    background-size: auto, 22px 22px;
    background-attachment: fixed, fixed;
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent);
}

.site-header {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
}

.brand img {
    border-radius: 10px;
}

.back-link {
    color: var(--muted);
    font-size: 15px;
    text-decoration: none;
}

.back-link:hover {
    color: var(--accent);
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 28px 24px 64px;
}

.hero {
    max-width: 720px;
    padding: 24px 0 32px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(32px, 6vw, 48px);
    line-height: 1.12;
    letter-spacing: -0.02em;
}

.lede {
    margin: 0;
    color: var(--muted);
    font-size: clamp(17px, 2.4vw, 20px);
    line-height: 1.55;
}

.section-title {
    margin: 0 0 18px;
    font-size: 22px;
    letter-spacing: -0.01em;
}

.article-list {
    display: grid;
    gap: 18px;
}

.article-card {
    padding: 24px;
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    margin: 0 0 10px;
    color: var(--muted);
    font-size: 13px;
}

.article-meta span:first-child {
    color: var(--accent);
    font-weight: 700;
}

.article-card h2 {
    margin: 0 0 10px;
    font-size: clamp(21px, 3vw, 26px);
    line-height: 1.3;
}

.article-card h2 a {
    color: var(--text);
    text-decoration: none;
}

.article-card h2 a:hover {
    color: var(--accent);
}

.article-card p {
    margin: 0 0 14px;
    color: var(--muted);
}

.read-link {
    font-weight: 700;
    text-decoration: none;
}

.read-link:hover {
    text-decoration: underline;
}

.empty-state {
    padding: 24px;
    background: var(--surface);
    border-radius: 16px;
    color: var(--muted);
}

.archive {
    margin-top: 42px;
    padding: 24px;
    background: var(--surface);
    border-radius: 18px;
}

.archive-count {
    margin: 0 0 16px;
    color: var(--muted);
    font-size: 14px;
}

.archive-year {
    display: grid;
    grid-template-columns: 84px 1fr;
    gap: 12px;
    padding: 10px 0;
    border-top: 1px solid var(--border);
}

.archive-year h3 {
    margin: 0;
    font-size: 18px;
}

.archive-year ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.archive-year li {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 3px 0;
    color: var(--muted);
    font-size: 14px;
}

footer {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 14px;
    text-align: center;
}

footer p {
    margin: 4px 0;
}

.updated {
    font-size: 12px;
    opacity: 0.8;
}

/* Article page */

.article-page {
    max-width: 760px;
    margin: 0 auto;
    padding: 24px 24px 72px;
}

.article-header {
    padding: 20px 0 28px;
}

.article-header h1 {
    font-size: clamp(30px, 5.5vw, 44px);
}

.article-summary {
    margin: 0;
    color: var(--muted);
    font-size: 19px;
    line-height: 1.55;
}

.article-body {
    font-size: 18px;
    line-height: 1.72;
}

.article-body h2 {
    margin: 40px 0 12px;
    font-size: 27px;
    line-height: 1.25;
}

.article-body h3 {
    margin: 28px 0 8px;
    font-size: 21px;
}

.article-body p {
    margin: 0 0 18px;
}

.article-body ul,
.article-body ol {
    margin: 0 0 18px;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 8px;
}

.article-body blockquote {
    margin: 24px 0;
    padding: 16px 20px;
    border-left: 4px solid var(--accent);
    background: var(--surface);
    border-radius: 0 12px 12px 0;
    color: var(--muted);
}

.article-body code {
    padding: 1px 5px;
    background: var(--surface);
    border-radius: 5px;
    font-size: 0.9em;
}

.article-body a {
    font-weight: 600;
}

.callout {
    margin: 26px 0;
    padding: 18px 20px;
    background: var(--accent-soft);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.callout p:last-child {
    margin-bottom: 0;
}

.related {
    margin-top: 44px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
}

.related h2 {
    margin-top: 0;
}

.sources {
    margin-top: 32px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 14px;
}

.sources h2 {
    font-size: 18px;
}

@media (max-width: 560px) {
    .site-header {
        padding-top: 18px;
    }

    .back-link {
        font-size: 14px;
    }

    .article-card {
        padding: 20px;
    }

    .article-page {
        padding-top: 12px;
    }

    .archive-year {
        grid-template-columns: 1fr;
        gap: 4px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        scroll-behavior: auto !important;
    }
}