:root {
    --primary: #005EB8;
    --secondary: #003D7A;
    --accent: #FF6B00;
    --bg: #ffffff;
    --text: #2d2d2d;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* Time bar */
.time-bar {
    background: var(--secondary);
    color: #fff;
    padding: 8px 0;
    font-size: 13px;
    text-align: center;
    letter-spacing: 0.5px;
}
.time-bar .clock { font-weight: 600; color: var(--accent); }

/* Header */
header { background: #fff; border-bottom: 1px solid #e0e0e0; position: sticky; top: 0; z-index: 100; }
.nav-wrap { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; max-width: 1200px; margin: 0 auto; }
.logo { font-size: 24px; font-weight: 700; color: var(--primary); }
.logo span { color: var(--accent); }
nav ul { display: flex; list-style: none; gap: 30px; }
nav a { color: var(--text); font-weight: 500; }
nav a:hover { color: var(--primary); text-decoration: none; }

/* Footer */
footer { background: #1a1a1a; color: #ccc; padding: 50px 0 20px; margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-grid h4 { color: #fff; margin-bottom: 15px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: #999; }
.footer-bottom { border-top: 1px solid #333; padding-top: 20px; text-align: center; font-size: 13px; color: #666; }

/* Common sections */
section { padding: 60px 0; }
.section-title { font-size: 32px; margin-bottom: 20px; color: var(--primary); }
.section-desc { font-size: 16px; color: #666; margin-bottom: 40px; max-width: 700px; }
.cta-btn { display: inline-block; padding: 14px 36px; background: var(--primary); color: #fff; border-radius: 4px; font-weight: 600; margin-top: 20px; }
.cta-btn:hover { background: var(--secondary); text-decoration: none; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin: 40px 0; }
.feature-card { padding: 30px; background: #f8f9fa; }
.feature-card h3 { margin-bottom: 12px; color: var(--primary); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 40px 0; }
.step { text-align: center; padding: 30px 20px; background: #fff; border: 1px solid #e0e0e0; }
.step-num { width: 50px; height: 50px; background: var(--primary); color: #fff; border-radius: 50%; line-height: 50px; font-size: 20px; font-weight: 700; margin: 0 auto 15px; }
.faq-item { border-bottom: 1px solid #e0e0e0; padding: 20px 0; }
.faq-item h3 { font-size: 18px; margin-bottom: 10px; }


.hero { background: #f5f7fa; padding: 60px 0; text-align: center; }
.search-bar { max-width: 800px; margin: 30px auto; display: flex; }
.search-bar input { flex: 1; padding: 18px 24px; border: 2px solid var(--primary); font-size: 16px; border-radius: 4px 0 0 4px; }
.search-bar button { padding: 18px 40px; background: var(--primary); color: #fff; border: none; font-size: 16px; cursor: pointer; border-radius: 0 4px 4px 0; }
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; margin: 40px 0; }
.cat-item { background: #fff; padding: 20px; text-align: center; border: 1px solid #e0e0e0; transition: all .2s; }
.cat-item:hover { border-color: var(--primary); box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.cat-icon { font-size: 32px; margin-bottom: 10px; }


@media (max-width: 768px) {
    .industry-grid, .solution-grid, .product-cols, .scenario-grid,
    .product-grid, .biz-grid, .progress-grid, .tech-cards, .news-grid,
    .cat-grid, .feature-grid, .steps, .footer-grid {
        grid-template-columns: 1fr !important;
    }
    nav ul { flex-direction: column; gap: 10px; }
}