/* Okx9.pro - AI 企业服务主题样式 */
:root {
    --bg-main: #09090b;       /* 极夜黑 */
    --bg-card: #18181b;       /* 深灰卡片 */
    --primary: #a855f7;       /* 霓虹紫 */
    --primary-glow: rgba(168, 85, 247, 0.4);
    --text-main: #f4f4f5;
    --text-muted: #a1a1aa;
    --border: #27272a;
}
* { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background-color: var(--bg-main); color: var(--text-muted); line-height: 1.7; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }

/* 导航栏 */
.header { position: fixed; top: 0; width: 100%; height: 80px; background: rgba(9, 9, 11, 0.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); z-index: 1000; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.nav-wrapper { display: flex; justify-content: space-between; align-items: center; height: 100%; }
.logo a { font-size: 26px; font-weight: 800; color: var(--text-main); letter-spacing: -1px; }
.logo span { color: var(--primary); }
.nav ul { display: flex; gap: 40px; margin-top: 15px;}
.nav a { font-size: 15px; font-weight: 600; color: var(--text-main); }
.nav a:hover, .nav a.active { color: var(--primary); text-shadow: 0 0 10px var(--primary-glow); }

/* Banner / 英雄区 */
.page-hero { padding: 180px 20px 100px; text-align: center; background: radial-gradient(circle at top, #3b0764, transparent 50%); border-bottom: 1px solid var(--border); }
.page-hero h1 { font-size: 3.5rem; color: var(--text-main); font-weight: 800; margin-bottom: 20px; line-height: 1.2; }
.page-hero p { font-size: 1.2rem; max-width: 650px; margin: 0 auto; }

/* 按钮 */
.btn { display: inline-block; padding: 15px 36px; background: var(--primary); color: #fff; border-radius: 8px; font-weight: 700; font-size: 16px; box-shadow: 0 0 20px var(--primary-glow); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 0 30px var(--primary-glow); background: #9333ea; }

/* 页脚 */
.footer { background: #000; border-top: 1px solid var(--border); padding: 80px 20px 30px; margin-top: 80px; }
.footer-grid { display: flex; justify-content: space-between; gap: 60px; max-width: 1200px; margin: 0 auto; border-bottom: 1px solid var(--border); padding-bottom: 60px; flex-wrap: wrap; }
.footer-grid > div { flex: 1; min-width: 250px; }
.footer h4 { color: #fff; font-size: 1.2rem; margin-bottom: 24px; font-weight: 600; }
.footer ul li { margin-bottom: 12px; font-size: 0.95rem; }
.email-link { color: var(--primary); font-weight: 600; font-size: 1.1rem; }
.email-link:hover { text-shadow: 0 0 10px var(--primary-glow); }
.footer-bottom { text-align: center; padding-top: 30px; font-size: 0.85rem; }

/* 手机端自适应 */
@media (max-width: 768px) {
    .nav ul { display: none; }
    .page-hero h1 { font-size: 2.5rem; }
    .footer-grid { flex-direction: column; gap: 40px; }
}