* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #0b1a30; color: #e0e0e0; min-height: 100vh; }
a { color: #00e5ff; text-decoration: none; }
a:hover { text-decoration: underline; }

.header { background: rgba(15, 20, 40, 0.9); backdrop-filter: blur(12px); padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.1); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.logo { font-size: 1.6rem; font-weight: 700; background: linear-gradient(135deg, #00e5ff, #6a11cb); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.nav a { color: #ccc; font-weight: 500; padding: 6px 12px; border-radius: 20px; transition: 0.3s; }
.nav a:hover { background: rgba(255,255,255,0.1); color: #fff; text-decoration: none; }
.hamburger { display: none; background: none; border: none; color: #fff; font-size: 1.8rem; cursor: pointer; }

@media (max-width: 768px) {
    .nav { display: none; width: 100%; flex-direction: column; background: rgba(0,0,0,0.8); padding: 16px; border-radius: 12px; margin-top: 10px; }
    .nav.active { display: flex; }
    .hamburger { display: block; }
}

.btn { display: inline-block; padding: 10px 24px; border-radius: 24px; background: linear-gradient(135deg, #6a11cb, #2575fc); color: #fff; border: none; cursor: pointer; font-size: 1rem; transition: 0.3s; box-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.5); }

.card { background: rgba(255,255,255,0.05); backdrop-filter: blur(8px); border-radius: 16px; padding: 20px; box-shadow: 0 4px 16px rgba(0,0,0,0.3); transition: 0.3s; border: 1px solid rgba(255,255,255,0.05); }
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.5); border-color: rgba(0,229,255,0.3); }

.page-content { max-width: 900px; margin: 40px auto; padding: 0 20px; }
.page-content h1 { font-size: 2rem; margin-bottom: 20px; background: linear-gradient(135deg, #00e5ff, #6a11cb); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.page-content p { line-height: 1.8; margin-bottom: 16px; color: #ccc; }

footer { text-align: center; padding: 30px 20px; color: #888; border-top: 1px solid rgba(255,255,255,0.05); margin-top: 40px; }
footer a { color: #00e5ff; }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-top: 20px; }

/* 滚动条 */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #0b1a30; }
::-webkit-scrollbar-thumb { background: #6a11cb; border-radius: 3px; }