/* 基础重置 */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif; overflow-x: hidden; background: #fefcf5; color: #2d2a24; }

/* 核心布局 — 必须居中 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; position: relative; }
.section:nth-child(even) { background: #f8f4eb; }

/* 导航 — 固定顶部 */
.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: rgba(254, 252, 245, 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid #e6ddd0; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; text-decoration: none; color: #2d2a24; letter-spacing: -0.5px; }
.logo-icon { width: 38px; height: 38px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1rem; background: #d4a373; color: #fefcf5; }
.main-nav { display: flex; align-items: center; gap: 28px; list-style: none; }
.main-nav a { text-decoration: none; font-size: 0.9rem; font-weight: 500; color: #5c5548; transition: 0.2s; letter-spacing: 0.3px; }
.main-nav a:hover { color: #d4a373; }
.nav-cta { padding: 8px 22px; border-radius: 50px; color: #fefcf5 !important; background: #d4a373; font-weight: 600; border: none; }
.nav-cta:hover { background: #c7915e; color: #fefcf5 !important; }
.menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: #2d2a24; cursor: pointer; }

/* 首页Hero */
.hero { min-height: 75vh; display: flex; align-items: center; position: relative; overflow: hidden; background: linear-gradient(135deg, #fefcf5 0%, #f5efe6 100%); }
.hero::before { content: ''; position: absolute; top: -20%; right: -10%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(212, 163, 115, 0.15) 0%, transparent 70%); border-radius: 50%; pointer-events: none; }
.hero-content { max-width: 680px; position: relative; z-index: 1; }
.hero-eyebrow { display: inline-block; font-size: 0.8rem; font-weight: 700; padding: 5px 16px; border-radius: 50px; background: #d4a373; color: #fefcf5; margin-bottom: 18px; letter-spacing: 1.5px; text-transform: uppercase; }
.hero h1 { font-size: 3.2rem; line-height: 1.15; margin-bottom: 18px; font-weight: 800; color: #2d2a24; letter-spacing: -1px; }
.hero h1 span { color: #d4a373; }
.hero p { font-size: 1.1rem; opacity: 0.75; max-width: 540px; margin-bottom: 32px; line-height: 1.7; color: #5c5548; }
.hero-buttons { display: flex; gap: 14px; }
.hero-image { border-radius: 20px; overflow: hidden; box-shadow: 0 20px 40px -12px rgba(45, 42, 36, 0.15); }
.hero-image img { width: 100%; height: auto; display: block; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; border-radius: 50px; font-weight: 600; cursor: pointer; border: none; text-decoration: none; transition: 0.25s; font-size: 0.95rem; }
.btn-primary { color: #fefcf5; background: #d4a373; }
.btn-primary:hover { background: #c7915e; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212, 163, 115, 0.3); }
.btn-outline { background: transparent; border: 2px solid #d4a373; color: #d4a373; }
.btn-outline:hover { background: #d4a373; color: #fefcf5; transform: translateY(-2px); }

/* 标签/标题 */
.section-label { display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 3px; margin-bottom: 12px; color: #d4a373; text-transform: uppercase; }
.section-title { font-size: 2.4rem; margin-bottom: 14px; font-weight: 800; color: #2d2a24; letter-spacing: -0.5px; }
.section-desc { max-width: 600px; opacity: 0.7; margin-bottom: 40px; line-height: 1.7; color: #5c5548; }

/* 卡片网格 */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 28px; }
.category-card { border-radius: 20px; padding: 32px; background: #fff; border: 1px solid #e6ddd0; transition: 0.3s; }
.category-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px -8px rgba(45, 42, 36, 0.08); border-color: #d4a373; }
.card-icon { width: 52px; height: 52px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin-bottom: 18px; font-size: 1.4rem; background: #f5efe6; color: #d4a373; }
.card-link { font-weight: 600; font-size: 0.85rem; text-decoration: none; color: #d4a373; display: inline-flex; align-items: center; gap: 6px; }

/* 特性块 */
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.feature-image { border-radius: 20px; overflow: hidden; box-shadow: 0 12px 32px -8px rgba(45, 42, 36, 0.1); }
.feature-image img { width: 100%; height: auto; display: block; }
.feature-text { }
.feature-list { list-style: none; }
.feature-list li { padding: 8px 0; display: flex; align-items: center; gap: 10px; font-size: 1rem; color: #5c5548; }
.feature-list li::before { content: '✓'; font-weight: 700; color: #d4a373; font-size: 1.1rem; }

/* 数据条 */
.stats-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item { padding: 28px 20px; border-radius: 20px; background: #fff; border: 1px solid #e6ddd0; transition: 0.3s; }
.stat-item:hover { transform: translateY(-4px); box-shadow: 0 12px 32px -8px rgba(45, 42, 36, 0.06); }
.stat-number { font-size: 2.4rem; font-weight: 800; color: #d4a373; line-height: 1; }
.stat-label { font-size: 0.9rem; opacity: 0.6; margin-top: 8px; color: #5c5548; }

/* 内容墙 */
.content-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 28px; }
.content-wall-item { border-radius: 20px; overflow: hidden; background: #fff; border: 1px solid #e6ddd0; transition: 0.3s; }
.content-wall-item:hover { transform: translateY(-6px); box-shadow: 0 16px 40px -8px rgba(45, 42, 36, 0.08); }
.content-wall-item img { width: 100%; height: 210px; object-fit: cover; display: block; }
.content-wall-body { padding: 22px 24px 24px; }
.content-wall-body h3 { font-size: 1.1rem; margin-bottom: 8px; color: #2d2a24; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid #e6ddd0; border-radius: 14px; margin-bottom: 10px; overflow: hidden; cursor: pointer; background: #fff; transition: 0.2s; }
.faq-item:hover { border-color: #d4a373; }
.faq-item .faq-question { padding: 18px 22px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; color: #2d2a24; font-size: 1rem; }
.faq-item .faq-question::after { content: '+'; font-size: 1.3rem; color: #d4a373; transition: 0.3s; }
.faq-item.open .faq-question::after { content: '−'; }
.faq-item .faq-answer { padding: 0 22px 18px; display: none; opacity: 0.75; line-height: 1.7; color: #5c5548; }
.faq-item.open .faq-answer { display: block; }

/* CTA横幅 */
.cta-banner { padding: 64px 32px; text-align: center; border-radius: 24px; background: linear-gradient(135deg, #d4a373 0%, #c7915e 100%); color: #fefcf5; }
.cta-banner h2 { color: #fefcf5; font-size: 2.2rem; margin-bottom: 14px; }
.cta-banner .section-desc { color: rgba(254, 252, 245, 0.8); margin: 0 auto 28px; }
.cta-banner .btn-primary { background: #fefcf5; color: #d4a373; }
.cta-banner .btn-primary:hover { background: #fff; box-shadow: 0 8px 24px rgba(254, 252, 245, 0.3); }

/* 页脚 */
.site-footer { padding: 60px 0 30px; background: #2d2a24; color: #e6ddd0; }
.site-footer .container { }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.footer-brand { }
.footer-brand .logo { color: #fefcf5; }
.footer-col { }
.footer-col h4 { color: #fefcf5; font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
.footer-col a { display: block; color: #b5a99a; text-decoration: none; font-size: 0.9rem; padding: 4px 0; transition: 0.2s; }
.footer-col a:hover { color: #d4a373; }
.footer-bottom { border-top: 1px solid rgba(230, 221, 208, 0.15); margin-top: 40px; padding-top: 22px; text-align: center; font-size: 0.85rem; color: #b5a99a; }

/* 工具类 */
.text-accent { color: #d4a373; }
.text-center { text-align: center; }
.seo-description { max-width: 600px; margin: 0 auto 48px; opacity: 0.7; color: #5c5548; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.2rem; }
  .feature-block { grid-template-columns: 1fr; gap: 32px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; }
  .main-nav.open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; width: 100%; background: #fefcf5; padding: 24px; border-bottom: 1px solid #e6ddd0; gap: 16px; }
  .section-title { font-size: 1.8rem; }
  .hero { min-height: 60vh; }
}
@media (max-width: 480px) {
  .cards-grid, .content-wall, .stats-bar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; }
  .hero h1 { font-size: 1.8rem; }
  .cta-banner { padding: 40px 20px; }
  .cta-banner h2 { font-size: 1.6rem; }
}