/* 公共样式 - 柒了分账 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif; color: #333; line-height: 1.6; }
a { text-decoration: none; color: inherit; }

.header { position: fixed; top: 0; left: 0; right: 0; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.08); z-index: 1000; }
.nav { max-width: 1200px; margin: 0 auto; padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 24px; font-weight: bold; color: #1890ff; }
.nav-links { display: flex; gap: 30px; list-style: none; }
.nav-links a { color: #333; font-size: 15px; transition: color 0.3s; }
.nav-links a:hover, .nav-links a.active { color: #1890ff; }

main { margin-top: 70px; }

.section { max-width: 1200px; margin: 0 auto; padding: 80px 20px; }
.section-title { text-align: center; font-size: 32px; margin-bottom: 50px; color: #333; }
.section-title span { color: #1890ff; }
.section-img, .card-img, .product-img { display: block; object-fit: cover; }

.btn { padding: 14px 36px; border-radius: 25px; font-size: 16px; cursor: pointer; transition: all 0.3s; border: none; }
.btn-primary { background: #fff; color: #1890ff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }
.btn-outline { background: transparent; color: #fff; border: 2px solid #fff; }
.btn-outline:hover { background: #fff; color: #1890ff; }
.hero-btns { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }

footer { background: #333; color: #999; padding: 30px 20px; text-align: center; font-size: 13px; }
footer a { color: #999; }