:root {
    --bg: #0f1115;
    --bg-card: #161a22;
    --fg: #e8eaed;
    --fg-muted: #9aa3b0;
    --accent: #4f8cff;
    --accent-hover: #6ea1ff;
    --border: #232936;
    --code-bg: #1c2230;
    --max-w: 880px;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #ffffff;
        --bg-card: #f6f7f9;
        --fg: #1a1d22;
        --fg-muted: #5b6470;
        --accent: #2f6fe6;
        --accent-hover: #1d56c4;
        --border: #e3e6eb;
        --code-bg: #eef0f3;
    }
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body { min-height: 100vh; display: flex; flex-direction: column; }

header.site {
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    background: var(--bg-card);
}

header.site .inner,
main, footer.site .inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.25rem;
}

header.site .inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

header.site a.brand {
    color: var(--fg);
    font-weight: 700;
    text-decoration: none;
    font-size: 1.05rem;
}

nav.lang { font-size: 0.9rem; }
nav.lang a {
    color: var(--fg-muted);
    text-decoration: none;
    margin-left: 0.6rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}
nav.lang a.active, nav.lang a:hover {
    color: var(--fg);
    background: var(--border);
}

main {
    flex: 1;
    width: 100%;
    padding-top: 2.5rem;
    padding-bottom: 3rem;
}

main h1 {
    font-size: 2rem;
    margin-top: 0;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}
main h2 { font-size: 1.4rem; margin-top: 2rem; }
main h3 { font-size: 1.15rem; margin-top: 1.5rem; }
main p, main li { color: var(--fg); }
main p.lead { font-size: 1.1rem; color: var(--fg-muted); margin-bottom: 1.5rem; }
main hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

main a { color: var(--accent); text-decoration: none; }
main a:hover { color: var(--accent-hover); text-decoration: underline; }

main code {
    background: var(--code-bg);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

main table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}
main th, main td {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
main th {
    background: var(--bg-card);
    font-weight: 600;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}
.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem;
    transition: border-color 0.15s ease, transform 0.15s ease;
    text-decoration: none;
    color: var(--fg);
    display: block;
}
.app-card:hover {
    border-color: var(--accent);
    text-decoration: none;
    transform: translateY(-2px);
}
.app-card h3 { margin: 0 0 0.4rem; font-size: 1.1rem; }
.app-card p { margin: 0; color: var(--fg-muted); font-size: 0.95rem; }
.app-card .tag {
    display: inline-block;
    background: var(--border);
    color: var(--fg-muted);
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    margin-top: 0.6rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    margin: 1.5rem 0;
}
.feature {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
}

.cta {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 0.7rem 1.4rem;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    margin-top: 1rem;
}
.cta:hover { background: var(--accent-hover); color: #fff; text-decoration: none; }

footer.site {
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
    background: var(--bg-card);
    color: var(--fg-muted);
    font-size: 0.9rem;
}
footer.site .inner {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
}
footer.site a { color: var(--fg-muted); text-decoration: none; }
footer.site a:hover { color: var(--fg); }

@media (max-width: 600px) {
    main h1 { font-size: 1.6rem; }
    main h2 { font-size: 1.25rem; }
    main { padding-top: 1.5rem; }
}