:root {
    --primary: #7c3aed;
    --primary-dark: #6d28d9;
    --bg: #0f0a1a;
    --card: #1a1128;
    --card-hover: #241838;
    --text: #e9e3f0;
    --text-light: #a79bb5;
    --border: #2d2440;
    --accent: #a78bfa;
    --gold: #fbbf24;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); line-height: 1.8; }
a { color: var(--accent); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--gold); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.navbar { background: rgba(15,10,26,0.95); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; backdrop-filter: blur(10px); }
.navbar-inner { display: flex; align-items: center; justify-content: space-between; padding: 15px 20px; max-width: 1100px; margin: 0 auto; }
.navbar-brand { font-size: 1.4rem; font-weight: bold; color: var(--accent); letter-spacing: 2px; }
.navbar-menu { display: flex; gap: 25px; }
.navbar-menu a { color: var(--text); font-size: 0.95rem; padding: 5px 10px; border-radius: 4px; }
.navbar-menu a:hover { background: var(--card); color: var(--accent); }
.hero { background: linear-gradient(135deg, #1a0f2e 0%, var(--bg) 100%); padding: 60px 20px; text-align: center; border-bottom: 1px solid var(--border); }
.hero h1 { font-size: 2.2rem; color: var(--accent); margin-bottom: 15px; letter-spacing: 3px; }
.hero p { color: var(--text-light); max-width: 700px; margin: 0 auto; font-size: 1.05rem; }
.intro-section { padding: 50px 20px; max-width: 800px; margin: 0 auto; }
.intro-section p { color: var(--text); line-height: 2; margin-bottom: 20px; font-size: 1.05rem; text-align: justify; }
.tag-cloud { padding: 30px 20px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.tag-cloud h3 { color: var(--accent); margin-bottom: 15px; text-align: center; font-size: 1.1rem; }
.tag-cloud-inner { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.tag-item { background: var(--card); color: var(--text-light); padding: 5px 14px; border-radius: 20px; font-size: 0.85rem; border: 1px solid var(--border); transition: all 0.3s; }
.tag-item:hover { background: var(--primary); color: white; border-color: var(--primary); }
.section { padding: 40px 20px; max-width: 1100px; margin: 0 auto; }
.section-title { font-size: 1.4rem; color: var(--accent); margin-bottom: 25px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); display: inline-block; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 25px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; transition: all 0.3s; }
.card:hover { transform: translateY(-5px); border-color: var(--primary); box-shadow: 0 10px 30px rgba(124,58,237,0.2); }
.card-img { height: 180px; background: linear-gradient(135deg, var(--primary-dark), var(--card)); display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 3rem; }
.card-body { padding: 20px; }
.card-body h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--text); }
.card-body p { color: var(--text-light); font-size: 0.9rem; margin-bottom: 15px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { color: var(--text-light); font-size: 0.8rem; display: flex; justify-content: space-between; }
.article-wrap { max-width: 800px; margin: 40px auto; padding: 0 20px; }
.article-header { margin-bottom: 30px; text-align: center; }
.article-header h1 { font-size: 1.8rem; color: var(--accent); margin-bottom: 15px; }
.article-header .meta { color: var(--text-light); font-size: 0.9rem; }
.article-body { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 30px; }
.article-body p { color: var(--text); margin-bottom: 18px; line-height: 2; font-size: 1.02rem; }
.article-body img { width: 100%; max-height: 400px; object-fit: cover; border-radius: 8px; margin-bottom: 20px; }
.article-body .tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 25px; margin-bottom: 25px; }
.btn-back { display: inline-block; background: var(--primary); color: white; padding: 10px 25px; border-radius: 4px; transition: background 0.3s; }
.btn-back:hover { background: var(--primary-dark); color: white; }
.list-menu { display: flex; gap: 15px; margin-bottom: 30px; flex-wrap: wrap; }
.list-menu a { background: var(--card); color: var(--text); padding: 8px 18px; border-radius: 4px; border: 1px solid var(--border); }
.list-menu a:hover, .list-menu a.active { background: var(--primary); color: white; border-color: var(--primary); }
.footer { background: var(--card); border-top: 1px solid var(--border); padding: 25px 20px; text-align: center; color: var(--text-light); margin-top: 60px; }
.footer a { color: var(--accent); }
.footer a:hover { color: var(--gold); }
@media (max-width: 768px) { .navbar-menu { gap: 10px; } .grid { grid-template-columns: 1fr; } .hero h1 { font-size: 1.6rem; } }