/* Start custom CSS */:root {
    --primary: #1a2b4b; /* 深专业蓝 */
    --accent: #d4af37;  /* 金色点缀 */
    --text-main: #2d3436;
    --text-light: #636e72;
    --bg-light: #f8f9fa;
}

body { font-family: 'Inter', -apple-system, sans-serif; line-height: 1.8; color: var(--text-main); margin: 0; background: #fff; }
header { padding: 30px 5%; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #eee; sticky; top: 0; background: #fff; z-index: 100; }
.logo { height: 50px; width: auto; }
nav a { margin-left: 25px; text-decoration: none; color: var(--primary); font-weight: 600; font-size: 15px; transition: 0.3s; }
nav a:hover { color: var(--accent); }

.hero-section { background: var(--bg-light); padding: 80px 10%; text-align: center; }
.container { max-width: 1000px; margin: 60px auto; padding: 0 30px; }

h1 { font-size: 2.8rem; color: var(--primary); margin-bottom: 20px; line-height: 1.2; }
h2 { font-size: 1.8rem; color: var(--primary); margin-top: 40px; border-left: 4px solid var(--accent); padding-left: 15px; }
p { margin-bottom: 25px; font-size: 1.1rem; }

.card { background: #fff; border: 1px solid #e1e4e8; padding: 30px; border-radius: 8px; margin-top: 30px; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }

footer { background: var(--primary); color: #fff; padding: 60px 10% 30px; margin-top: 100px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 40px; }
.footer-links a { display: block; color: #cbd5e0; text-decoration: none; margin-bottom: 12px; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.copy { text-align: center; padding-top: 30px; font-size: 13px; color: #a0aec0; }/* End custom CSS */