:root {
    --brand-primary: #D1356A;
    --brand-gradient: linear-gradient(135deg, #FFB150, #E74B59, #C83375, #933EAC);
    --bg-main: #FFFFFF;
    --bg-light: #F9FAFB;
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --border-color: #E5E7EB;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif; }
body { background-color: var(--bg-main); color: var(--text-primary); line-height: 1.6; }
a { text-decoration: none; color: inherit; }

/* SEO Optimized Minimal Nav */
.nav { display: flex; justify-content: space-between; align-items: center; padding: 15px 5%; background: var(--bg-main); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 50; }
.nav-brand { font-size: 24px; font-weight: 800; color: var(--brand-primary); }
.nav-links a { margin-left: 30px; font-size: 15px; font-weight: 500; color: var(--text-primary); transition: color 0.2s; }
.nav-links a:hover { color: var(--brand-primary); }

/* Clean Hero Section */
.hero { text-align: center; padding: 80px 20px 60px; background: var(--bg-light); border-bottom: 1px solid var(--border-color); }
.hero h1 { font-size: 46px; font-weight: 800; margin-bottom: 20px; color: var(--text-primary); }
.hero p { font-size: 18px; color: var(--text-secondary); max-width: 750px; margin: 0 auto 40px; }
.btn-group { display: flex; justify-content: center; gap: 20px; }
.btn { padding: 14px 32px; border-radius: 6px; font-size: 16px; font-weight: bold; text-align: center; transition: 0.2s; border: 1px solid transparent; }
.btn-primary { background: var(--brand-primary); color: white; }
.btn-primary:hover { background: #B92C5A; }
.btn-secondary { background: white; color: var(--text-primary); border-color: #D1D5DB; }
.btn-secondary:hover { background: #F3F4F6; }

/* Statistics Bar */
.data-bar { display: flex; justify-content: center; gap: 50px; flex-wrap: wrap; padding: 30px 20px; border-bottom: 1px solid var(--border-color); }
.data-item { text-align: center; }
.data-item h3 { font-size: 28px; font-weight: 700; color: var(--brand-primary); margin-bottom: 4px; }
.data-item p { font-size: 14px; color: var(--text-secondary); }

/* Common Container */
.container { max-width: 1100px; margin: 0 auto; padding: 60px 20px; }
.section-title { font-size: 30px; font-weight: bold; margin-bottom: 40px; text-align: center; color: var(--text-primary); }
.img-fluid { max-width: 100%; height: auto; display: block; border-radius: 8px; border: 1px solid var(--border-color); margin: 30px auto; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }

/* Minimal Cards */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.card { padding: 25px; border-radius: 8px; border: 1px solid var(--border-color); background: white; transition: 0.2s; }
.card:hover { border-color: var(--brand-primary); box-shadow: 0 4px 15px rgba(0,0,0,0.04); }
.card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--text-primary); border-left: 3px solid var(--brand-primary); padding-left: 10px; }
.card p { font-size: 14px; color: var(--text-secondary); }

/* FAQ List */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { padding: 20px 0; border-bottom: 1px dashed var(--border-color); }
.faq-item:last-child { border-bottom: none; }
.faq-item h3 { font-size: 17px; font-weight: 600; color: var(--text-primary); margin-bottom: 10px; }
.faq-item p { font-size: 15px; color: var(--text-secondary); }

/* Steps */
.step-row { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-bottom: 40px; }
.step-item { background: white; border: 1px solid var(--border-color); padding: 20px; border-radius: 8px; flex: 1; min-width: 220px; text-align: center; }
.step-num { display: inline-block; width: 32px; height: 32px; background: var(--brand-primary); color: white; font-weight: bold; border-radius: 50%; line-height: 32px; margin-bottom: 15px; }

/* Footer */
.footer { background: var(--bg-light); border-top: 1px solid var(--border-color); padding: 40px 20px; text-align: center; }
.footer-links { margin-bottom: 15px; }
.footer-links a { font-size: 14px; color: var(--text-secondary); margin: 0 15px; }
.footer-links a:hover { color: var(--brand-primary); }
.footer p { font-size: 13px; color: #9CA3AF; }