/* 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: #f0f7f0; }

/* 核心布局 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position: relative; }
.section:nth-child(even) { background: #e8f5e9; }

/* 导航 — 固定顶部 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(240,247,240,0.92); backdrop-filter:blur(12px); border-bottom:1px solid #a5d6a7; }
.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:700; font-size:1.3rem; text-decoration:none; color:#2e7d32; letter-spacing:1px; }
.logo-icon { width:40px; height:40px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1.2rem; background: linear-gradient(135deg, #66bb6a, #43a047); color:#fff; box-shadow: 0 2px 8px rgba(76,175,80,0.3); }
.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; transition:0.3s; color:#388e3c; position: relative; padding-bottom:4px; }
.main-nav a::after { content:''; position:absolute; bottom:0; left:0; width:0; height:2px; background:#66bb6a; transition:0.3s; }
.main-nav a:hover { color:#1b5e20; }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:10px 24px; border-radius:50px; color:#fff!important; font-weight:600; background: linear-gradient(135deg, #66bb6a, #43a047); box-shadow: 0 4px 12px rgba(76,175,80,0.3); transition:0.3s; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(76,175,80,0.4); }
.nav-cta::after { display: none; }
.menu-toggle { display:none; background: none; border: none; font-size:1.5rem; color:#2e7d32; cursor:pointer; }

/* 首页Hero */
.hero { min-height:75vh; display:flex; align-items:center; background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 50%, #a5d6a7 100%); position: relative; overflow: hidden; }
.hero::before { content:'🌿'; position:absolute; top:10%; left:5%; font-size:8rem; opacity:0.1; transform:rotate(-15deg); }
.hero::after { content:'🌸'; position:absolute; bottom:10%; right:5%; font-size:6rem; opacity:0.1; transform:rotate(20deg); }
.hero-content { max-width:720px; position: relative; z-index:1; }
.hero-eyebrow { display:inline-block; font-size:0.85rem; font-weight:600; padding:6px 18px; border-radius:50px; margin-bottom:16px; background: rgba(255,255,255,0.6); color:#2e7d32; backdrop-filter:blur(4px); border:1px solid rgba(76,175,80,0.2); }
.hero h1 { font-size:3rem; line-height:1.15; margin-bottom:20px; color:#1b5e20; letter-spacing:-1px; }
.hero h1 span { display: inline-block; background: linear-gradient(135deg, #43a047, #66bb6a); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size:1.15rem; opacity:0.8; max-width:560px; margin-bottom:36px; color:#2e7d32; line-height:1.6; }
.hero-buttons { display:flex; gap:16px; }
.hero-image { border-radius:16px; overflow:hidden; box-shadow: 0 8px 32px rgba(76,175,80,0.2); }
.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:0.3s; font-size:0.95rem; }
.btn-primary { color:#fff; background: linear-gradient(135deg, #66bb6a, #43a047); box-shadow: 0 4px 16px rgba(76,175,80,0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(76,175,80,0.4); }
.btn-outline { background:transparent; border:2px solid #66bb6a; color:#2e7d32; }
.btn-outline:hover { background: rgba(102,187,106,0.1); }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.8rem; font-weight:600; letter-spacing:3px; margin-bottom:12px; color:#66bb6a; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; color:#1b5e20; font-weight:700; letter-spacing:-0.5px; }
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color:#388e3c; line-height:1.6; }

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.category-card { border-radius:16px; padding:32px; border:1px solid rgba(102,187,106,0.2); background: rgba(255,255,255,0.7); backdrop-filter:blur(8px); transition:0.4s; position: relative; overflow: hidden; }
.category-card::before { content:''; position:absolute; top:0; left:0; width:4px; height:100%; background: linear-gradient(180deg, #66bb6a, #43a047); opacity:0; transition:0.4s; }
.category-card:hover { transform:translateY(-5px); box-shadow:0 8px 30px rgba(76,175,80,0.15); border-color:#66bb6a; }
.category-card:hover::before { opacity:1; }
.card-icon { width:52px; height:52px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.5rem; background: linear-gradient(135deg, #e8f5e9, #c8e6c9); color:#2e7d32; }
.card-link { font-weight:600; font-size:0.85rem; text-decoration:none; color:#43a047; transition:0.3s; display: inline-flex; align-items:center; gap:6px; }
.card-link:hover { color:#1b5e20; gap:10px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.feature-image { border-radius:16px; overflow:hidden; box-shadow: 0 8px 24px rgba(76,175,80,0.15); }
.feature-image img { width:100%; height:auto; display:block; transition:0.5s; }
.feature-image:hover img { transform:scale(1.03); }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { padding:8px 0; display:flex; align-items:center; gap:10px; color:#2e7d32; font-size:1.05rem; }
.feature-list li::before { content:'🌱'; font-weight:700; font-size:1.2rem; }

/* 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:16px; border:1px solid rgba(102,187,106,0.2); background: rgba(255,255,255,0.5); backdrop-filter:blur(4px); transition:0.3s; }
.stat-item:hover { background: rgba(255,255,255,0.8); transform:translateY(-3px); box-shadow:0 4px 16px rgba(76,175,80,0.1); }
.stat-number { font-size:2.5rem; font-weight:800; color:#1b5e20; line-height:1; }
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; color:#388e3c; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px; }
.content-wall-item { border-radius:16px; overflow:hidden; border:1px solid rgba(102,187,106,0.2); transition:0.4s; background: #fff; }
.content-wall-item:hover { transform:translateY(-5px); box-shadow:0 8px 30px rgba(76,175,80,0.15); border-color:#66bb6a; }
.content-wall-item img { width:100%; height:200px; object-fit:cover; transition:0.5s; }
.content-wall-item:hover img { transform:scale(1.05); }
.content-wall-body { padding:24px; }
.content-wall-body h3 { color:#1b5e20; margin-bottom:8px; }
.content-wall-body p { color:#388e3c; opacity:0.7; font-size:0.9rem; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid rgba(102,187,106,0.2); border-radius:12px; margin-bottom:10px; overflow:hidden; cursor:pointer; background: rgba(255,255,255,0.6); backdrop-filter:blur(4px); transition:0.3s; }
.faq-item:hover { border-color:#66bb6a; }
.faq-item .faq-question { padding:18px 24px; font-weight:600; display:flex; justify-content:space-between; color:#1b5e20; font-size:1.05rem; }
.faq-item .faq-question::after { content:'+'; font-size:1.3rem; color:#66bb6a; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 24px 18px; display:none; opacity:0.8; color:#388e3c; line-height:1.6; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { padding:64px 24px; text-align:center; border-radius:20px; color:#fff; background: linear-gradient(135deg, #43a047, #2e7d32, #1b5e20); position: relative; overflow: hidden; }
.cta-banner::before { content:'✨'; position:absolute; top:20%; left:10%; font-size:4rem; opacity:0.2; }
.cta-banner::after { content:'🌟'; position:absolute; bottom:20%; right:10%; font-size:3rem; opacity:0.2; }
.cta-banner h2 { color:#fff; font-size:2rem; margin-bottom:12px; }
.cta-banner p { color:rgba(255,255,255,0.8); margin-bottom:24px; }
.cta-banner .btn-primary { background:#fff; color:#2e7d32; box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
.cta-banner .btn-primary:hover { background: #f1f8e9; }

/* 页脚 */
.site-footer { padding:64px 0 32px; background: linear-gradient(135deg, #1b5e20, #2e7d32); color:rgba(255,255,255,0.9); }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-brand h3 { color:#fff; font-size:1.3rem; margin-bottom:12px; }
.footer-brand p { opacity:0.7; line-height:1.6; font-size:0.9rem; }
.footer-col { }
.footer-col h4 { color:#a5d6a7; font-size:0.95rem; margin-bottom:16px; text-transform:uppercase; letter-spacing:1px; }
.footer-col a { display:block; color:rgba(255,255,255,0.7); text-decoration:none; padding:4px 0; font-size:0.9rem; transition:0.3s; }
.footer-col a:hover { color:#fff; padding-left:4px; }
.footer-bottom { border-top:1px solid rgba(165,214,167,0.2); margin-top:48px; padding-top:24px; text-align:center; font-size:0.85rem; opacity:0.6; }

/* 工具类 */
.text-accent { color:#66bb6a; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#388e3c; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; gap:40px; }
  .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:rgba(240,247,240,0.98); padding:24px; gap:16px; border-bottom:2px solid #a5d6a7; }
  .hero h1 { font-size:2.2rem; }
  .hero { min-height:60vh; }
  .section-title { font-size:1.8rem; }
}
@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; }
  .section { padding:56px 0; }
  .stat-number { font-size:2rem; }
}