/* 网站布局: 卡片网格 */
:root { --primary: #EA580C; --accent: #F97316; --text: #1e293b; --text-light: #64748b; --bg: #fff7ed; --white: #ffffff; --radius: 20px; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", sans-serif; background: var(--bg); color: var(--text); }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.top-bar { background: var(--primary); color: var(--white); padding: 8px 0; font-size: 13px; }
.top-bar .container { display: flex; justify-content: center; gap: 35px; }
.top-bar a { color: var(--white); text-decoration: none; opacity: 0.95; }
.header { background: var(--white); box-shadow: 0 4px 25px rgba(0,0,0,0.1); }
.navbar { padding: 17px 0; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 23px; font-weight: 700; color: var(--primary); }
.nav-menu { display: flex; gap: 7px; list-style: none; }
.nav-menu a { padding: 10px 18px; color: var(--text); text-decoration: none; border-radius: 25px; transition: all 0.3s; font-size: 14px; font-weight: 500; }
.nav-menu a:hover, .nav-menu a.active { background: linear-gradient(135deg, var(--primary), var(--accent)); color: var(--white); }
.hero { background: linear-gradient(135deg, var(--primary), var(--accent)); padding: 75px 0; text-align: center; color: var(--white); border-radius: 0 0 40px 40px; }
.hero h1 { font-size: 35px; margin-bottom: 14px; }
.hero p { font-size: 17px; opacity: 0.95; }
.features { padding: 58px 0; }
.section-title { text-align: center; font-size: 27px; margin-bottom: 42px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: var(--white); padding: 34px 28px; border-radius: var(--radius); text-align: center; box-shadow: 0 5px 20px rgba(0,0,0,0.08); transition: all 0.3s; }
.feature-card:hover { transform: translateY(-7px); box-shadow: 0 15px 40px rgba(0,0,0,0.15); }
.feature-icon { width: 60px; height: 60px; background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 17px; color: var(--white); font-size: 26px; }
.feature-card h3 { font-size: 18px; margin-bottom: 11px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
.content-area { padding: 50px 0; }
.content-section { background: var(--white); padding: 34px; border-radius: var(--radius); margin-bottom: 22px; box-shadow: 0 5px 20px rgba(0,0,0,0.08); }
.content-section h2 { font-size: 21px; color: var(--primary); margin-bottom: 12px; }
.content-section p { font-size: 15px; color: var(--text-light); line-height: 1.8; }
.cta { background: linear-gradient(135deg, var(--primary), var(--accent)); padding: 58px 0; text-align: center; color: var(--white); }
.cta h2 { font-size: 27px; }
.cta .btn { display: inline-block; padding: 14px 42px; background: var(--white); color: var(--primary); border-radius: 30px; font-weight: 600; text-decoration: none; }
.footer { background: #431407; color: var(--white); padding: 45px 0 20px; }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 35px; text-align: center; }
.footer-section h4 { font-size: 16px; margin-bottom: 15px; color: var(--accent); }
.footer-section p { color: #fdba74; font-size: 13px; margin-bottom: 8px; }
.footer-bottom { text-align: center; padding-top: 25px; border-top: 1px solid #7c2d12; color: #fb923c; 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: 992px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .nav-menu { display: none; width: 100%; flex-direction: column; margin-top: 15px; } .nav-menu.active { display: flex; } .mobile-toggle { display: flex; } .hero { border-radius: 0; } .hero h1 { font-size: 24px; } }