/* 网站133 - 时间线流程布局 */
:root { --primary: #6D28D9; --secondary: #8B5CF6; --accent: #A78BFA; --text: #1e293b; --bg: #f5f3ff; --white: #ffffff; --radius: 16px; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", sans-serif; background: var(--bg); color: var(--text); }
.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }

/* 头部 */
.header { background: var(--white); box-shadow: 0 4px 20px rgba(109,40,217,0.1); position: sticky; top: 0; z-index: 100; }
.navbar { padding: 15px 0; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 22px; font-weight: 700; color: var(--primary); letter-spacing: 2px; }
.nav-menu { display: flex; gap: 10px; list-style: none; }
.nav-menu a { padding: 10px 20px; color: var(--text); text-decoration: none; border-radius: 25px; transition: all 0.3s; font-size: 14px; }
.nav-menu a:hover { background: var(--bg); color: var(--primary); }
.nav-menu a.active { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: var(--white); }

/* 英雄区 */
.hero { background: linear-gradient(135deg, var(--primary), var(--secondary)); padding: 80px 0; text-align: center; color: var(--white); border-radius: 0 0 50% 50% / 30px; margin-bottom: 40px; }
.hero h1 { font-size: 34px; margin-bottom: 12px; }
.hero p { font-size: 16px; opacity: 0.9; }

/* 时间线功能区 */
.features { padding: 40px 0; position: relative; }
.features::before { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--primary), var(--secondary)); transform: translateX(-50%); }
.section-title { text-align: center; font-size: 26px; margin-bottom: 50px; color: var(--primary); }

.feature-grid { display: flex; flex-direction: column; gap: 40px; position: relative; }
.feature-card { background: var(--white); padding: 25px 30px; border-radius: var(--radius); box-shadow: 0 5px 20px rgba(109,40,217,0.1); position: relative; width: calc(50% - 30px); }
.feature-card:nth-child(odd) { margin-left: auto; }
.feature-card::before { content: ''; position: absolute; width: 16px; height: 16px; background: var(--primary); border: 3px solid var(--white); border-radius: 50%; top: 30px; }
.feature-card:nth-child(odd)::before { left: -38px; }
.feature-card:nth-child(even)::before { right: -38px; }
.feature-card h3 { font-size: 18px; color: var(--primary); margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.feature-card p { font-size: 14px; color: #666; line-height: 1.7; }

/* 内容区 */
.content-area { padding: 50px 0; }
.content-section { background: var(--white); padding: 35px; border-radius: var(--radius); margin-bottom: 25px; box-shadow: 0 4px 15px rgba(109,40,217,0.08); }
.content-section h2 { font-size: 22px; color: var(--primary); margin-bottom: 15px; }
.content-section p { font-size: 15px; color: #666; line-height: 1.8; }

/* CTA */
.cta { background: linear-gradient(135deg, var(--primary), var(--secondary)); padding: 60px 0; text-align: center; color: var(--white); border-radius: 50% 50% 0 0 / 30px; }
.cta h2 { font-size: 28px; margin-bottom: 12px; }
.cta .btn { display: inline-block; padding: 12px 40px; background: var(--white); color: var(--primary); border-radius: 25px; font-weight: 600; text-decoration: none; margin-top: 15px; }

/* 底部 */
.footer { background: #2e1065; color: var(--white); padding: 40px 0 20px; }
.footer-content { display: flex; justify-content: center; gap: 60px; text-align: center; }
.footer-section h4 { font-size: 16px; margin-bottom: 15px; color: var(--accent); }
.footer-section p { color: #a78bfa; font-size: 13px; margin-bottom: 8px; }
.footer-bottom { text-align: center; padding-top: 25px; color: #7c3aed; font-size: 12px; }

.mobile-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; }
.mobile-toggle span { width: 22px; height: 2px; background: var(--primary); }

@media (max-width: 768px) {
    .navbar { flex-wrap: wrap; }
    .nav-menu { display: none; width: 100%; flex-direction: column; margin-top: 15px; }
    .nav-menu.active { display: flex; }
    .mobile-toggle { display: flex; }
    .features::before { left: 20px; }
    .feature-card { width: calc(100% - 50px); margin-left: 50px !important; }
    .feature-card::before { left: -38px !important; right: auto !important; }
    .hero h1 { font-size: 24px; }
    .footer-content { flex-direction: column; gap: 30px; }
}