*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: #f7f8fa; color: #1a1a2e; line-height: 1.7; }
header { background: #0f0f23; padding: 20px 40px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
header .logo-text { font-size: 1.4rem; font-weight: 700; color: #ffffff; letter-spacing: -0.5px; text-decoration: none; }
header .logo-text span { color: #4f8ef7; }
header nav a { color: #cfd6e6; margin-left: 20px; font-size: 0.9rem; text-decoration: none; }
header nav a:hover { color: #ffffff; }
.container { max-width: 820px; margin: 48px auto; padding: 0 24px 80px; }
.card { background: #ffffff; border-radius: 12px; padding: 48px 52px; box-shadow: 0 2px 16px rgba(0,0,0,0.07); }
h1 { font-size: 1.9rem; font-weight: 700; margin-bottom: 6px; color: #0f0f23; }
.updated { font-size: 0.85rem; color: #888; margin-bottom: 36px; }
.lead { font-size: 1.05rem; color: #333; }
h2 { font-size: 1.05rem; font-weight: 700; color: #0f0f23; margin-top: 36px; margin-bottom: 10px; }
p { margin-bottom: 14px; color: #444; font-size: 0.95rem; }
ul { padding-left: 20px; margin-bottom: 14px; }
ul li { color: #444; font-size: 0.95rem; margin-bottom: 6px; }
code { background: #f0f2f7; padding: 1px 6px; border-radius: 4px; font-size: 0.85rem; }
a { color: #4f8ef7; text-decoration: none; }
a:hover { text-decoration: underline; }
hr { border: none; border-top: 1px solid #eee; margin: 36px 0; }
.small { font-size: 0.85rem; color: #999; }
.links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.btn { display: inline-block; background: #0f0f23; color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 0.9rem; }
.btn:hover { text-decoration: none; background: #23234a; }
footer { text-align: center; padding: 24px; font-size: 0.8rem; color: #aaa; }
footer a { color: #888; }
@media (max-width: 600px) { header { padding: 16px; } header nav a { margin-left: 14px; } .container { padding: 0 16px 60px; margin-top: 28px; } .card { padding: 28px 20px; } h1 { font-size: 1.4rem; } }