/* 网站布局: 对话式聊天 */
:root { --primary: #CA8A04; --accent: #EAB308; --text: #1e293b; --text-light: #64748b; --bg: #fefce8; --white: #ffffff; --radius: 12px; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", sans-serif; background: var(--bg); color: var(--text); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.top-bar { background: var(--primary); color: var(--white); padding: 8px 0; font-size: 13px; }
.top-bar .container { display: flex; justify-content: flex-end; gap: 28px; }
.top-bar a { color: var(--white); text-decoration: none; opacity: 0.9; }
.header { background: var(--white); box-shadow: 0 3px 18px rgba(0,0,0,0.1); }
.navbar { padding: 15px 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: 6px; list-style: none; }
.nav-menu a { padding: 10px 17px; color: var(--text); text-decoration: none; border-radius: 6px; transition: all 0.3s; font-size: 14px; }
.nav-menu a:hover, .nav-menu a.active { background: var(--primary); color: var(--white); }
.hero { background: linear-gradient(135deg, var(--primary), var(--accent)); padding: 72px 0; text-align: center; color: var(--white); }
.hero h1 { font-size: 34px; margin-bottom: 13px; }
.hero p { font-size: 17px; opacity: 0.95; }
.features { padding: 55px 0; }
.section-title { text-align: center; font-size: 26px; margin-bottom: 40px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-card { background: var(--white); padding: 28px 24px; border-radius: var(--radius); text-align: center; box-shadow: 0 4px 18px rgba(0,0,0,0.08); border-top: 4px solid var(--primary); transition: all 0.3s; }
.feature-card:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.12); }
.feature-icon { width: 54px; height: 54px; background: linear-gradient(135deg, var(--primary), var(--accent)); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; color: var(--white); font-size: 24px; }
.feature-card h3 { font-size: 17px; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
.content-area { padding: 48px 0; }
.content-section { background: var(--white); padding: 32px; border-radius: var(--radius); margin-bottom: 20px; box-shadow: 0 4px 15px rgba(0,0,0,0.08); }
.content-section h2 { font-size: 20px; color: var(--primary); margin-bottom: 12px; }
.content-section p { font-size: 14px; color: var(--text-light); line-height: 1.8; }
.cta { background: linear-gradient(135deg, var(--primary), var(--accent)); padding: 55px 0; text-align: center; color: var(--white); }
.cta h2 { font-size: 26px; }
.cta .btn { display: inline-block; padding: 13px 38px; background: var(--white); color: var(--primary); border-radius: 25px; font-weight: 600; text-decoration: none; }
.footer { background: #422006; color: var(--white); padding: 45px 0 20px; }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 35px; }
.footer-section h4 { font-size: 16px; margin-bottom: 15px; color: var(--accent); }
.footer-section p { color: #fcd34d; font-size: 13px; margin-bottom: 8px; }
.footer-bottom { text-align: center; padding-top: 25px; border-top: 1px solid #713f12; color: #fbbf24; 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 h1 { font-size: 24px; } }