:root {
    --bg: #0d1117;
    --card: #161b22;
    --border: #30363d;
    --text: #e6edf3;
    --muted: #8b949e;
    --accent: #58a6ff;
    --green: #3fb950;
    --purple: #a371f7;
    --orange: #f0883e;
    --red: #f85149;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 2;
    font-size: 17px;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

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

article { padding: 20px 0; }

h1 {
    font-size: 30px;
    line-height: 1.35;
    margin-bottom: 16px;
    color: var(--text);
}

h2 { font-size: 24px; margin: 32px 0 12px; color: var(--text); }
h3 { font-size: 20px; margin: 24px 0 10px; color: var(--text); }

p { margin-bottom: 20px; color: #c9d1d9; line-height: 2; }
strong { color: var(--text); font-weight: 700; }

img {
    max-width: 100%;
    border-radius: 8px;
    margin: 20px 0;
}

.meta {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 30px;
}

.lead {
    font-size: 18px;
    color: #c9d1d9;
    margin-bottom: 30px;
    border-left: 3px solid var(--accent);
    padding-left: 15px;
}

.author-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 24px;
    font-size: 14px;
}

.cta-box {
    background: linear-gradient(135deg, rgba(163,113,247,0.12), rgba(88,166,255,0.12));
    border: 1px solid rgba(163,113,247,0.3);
    border-radius: 16px;
    padding: 28px;
    text-align: center;
    margin: 48px 0;
}
.cta-box h3 {
    color: var(--text);
    font-size: 20px;
    margin: 0 0 10px;
}
.cta-box p {
    color: var(--muted);
    margin: 0 0 16px;
    font-size: 15px;
}
.cta-box a {
    display: inline-block;
    background: var(--green);
    color: #000 !important;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 15px;
    transition: opacity 0.2s;
}
.cta-box a:hover { opacity: 0.85; text-decoration: none !important; }

.faq-section { margin: 40px 0; }
.faq-section h3 { font-size: 20px; margin-bottom: 20px; }
.faq-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 12px;
}
.faq-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}
.faq-item p {
    font-size: 15px;
    color: var(--muted);
    margin: 0;
    line-height: 1.7;
}

.related {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}
.related h3 { font-size: 18px; margin-bottom: 15px; }
.related a {
    display: block;
    margin-bottom: 10px;
    color: var(--accent);
}
.related a:hover { text-decoration: underline; }

.footer {
    text-align: center;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 13px;
}
.footer a { color: var(--muted); text-decoration: underline; }
.footer a:hover { color: var(--accent); }

@media (max-width: 600px) {
    body { padding: 12px; }
    h1 { font-size: 22px; }
    .cta-box { padding: 20px; }
    .author-box { flex-direction: column; text-align: center; }
}