*, *::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:#fef9e7; color:#3d2c1a; }

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:linear-gradient(135deg, #fef5e0 0%, #fce4c8 100%); }

/* 导航 — 西瓜主题 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(254,249,231,0.92); backdrop-filter:blur(12px); border-bottom:2px solid #e8d5b0; }
.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:1.3rem; text-decoration:none; color:#2d5a27; letter-spacing:1px; }
.logo-icon { width:40px; height:40px; border-radius:50%; background:linear-gradient(135deg, #4caf50, #81c784); display:flex; align-items:center; justify-content:center; font-size:1.2rem; color:#fff; box-shadow:0 3px 10px 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:0.95rem; font-weight:500; color:#5a4a2a; transition:0.3s; position:relative; padding:4px 0; }
.main-nav a::after { content:''; position:absolute; bottom:0; left:0; width:0; height:2px; background:#e57373; transition:0.3s; }
.main-nav a:hover { color:#d84315; }
.main-nav a:hover::after { width:100%; }
.nav-cta { padding:10px 24px; border-radius:25px; color:#fff!important; background:linear-gradient(135deg, #ff8a65, #e57373); font-weight:700; box-shadow:0 4px 12px rgba(229,115,115,0.3); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; background:none; border:2px solid #8d6e63; border-radius:8px; padding:8px 12px; cursor:pointer; color:#5a4a2a; font-size:1.2rem; }

/* 首页Hero — 瓜田风格 */
.hero { min-height:75vh; display:flex; align-items:center; background:linear-gradient(135deg, #fef9e7 0%, #fce4c8 40%, #ffccbc 100%); position:relative; overflow:hidden; }
.hero::before { content:'🍉'; position:absolute; top:-30px; right:-30px; font-size:300px; opacity:0.08; transform:rotate(15deg); }
.hero::after { content:'🥒'; position:absolute; bottom:-40px; left:-20px; font-size:200px; opacity:0.06; transform:rotate(-10deg); }
.hero-content { max-width:720px; position:relative; z-index:2; }
.hero-eyebrow { display:inline-block; font-size:0.85rem; font-weight:700; padding:6px 18px; border-radius:25px; margin-bottom:16px; background:linear-gradient(135deg, #ff8a65, #e57373); color:#fff; letter-spacing:2px; box-shadow:0 3px 10px rgba(229,115,115,0.2); }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:20px; color:#2d5a27; letter-spacing:-1px; }
.hero h1 span { color:#e57373; text-decoration:underline wavy #ff8a65 3px; }
.hero p { font-size:1.15rem; opacity:0.8; max-width:560px; margin-bottom:36px; color:#5a4a2a; line-height:1.7; }
.hero-buttons { display:flex; gap:16px; }
.hero-image { border-radius:20px; overflow:hidden; box-shadow:0 20px 40px rgba(0,0,0,0.1); border:3px solid #fff; }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:10px; padding:14px 32px; border-radius:30px; font-weight:700; cursor:pointer; border:none; text-decoration:none; transition:0.3s; font-size:0.95rem; }
.btn-primary { color:#fff; background:linear-gradient(135deg, #ff8a65, #e57373); box-shadow:0 6px 16px rgba(229,115,115,0.3); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(229,115,115,0.4); }
.btn-outline { background:transparent; border:2px solid #8d6e63; color:#5a4a2a; }
.btn-outline:hover { background:#8d6e63; color:#fff; }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.85rem; font-weight:700; letter-spacing:3px; margin-bottom:12px; color:#e57373; text-transform:uppercase; }
.section-title { font-size:2.4rem; margin-bottom:14px; color:#2d5a27; line-height:1.2; }
.section-desc { max-width:600px; opacity:0.75; margin-bottom:40px; color:#5a4a2a; font-size:1.05rem; }

/* 卡片网格 — 西瓜卡片 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.category-card { border-radius:20px; padding:32px; background:#fff; border:2px solid #e8d5b0; transition:0.3s; position:relative; overflow:hidden; }
.category-card::before { content:'🍉'; position:absolute; top:10px; right:15px; font-size:40px; opacity:0.15; }
.category-card:hover { transform:translateY(-5px); box-shadow:0 12px 30px rgba(139,195,74,0.2); border-color:#81c784; }
.card-icon { width:56px; height:56px; border-radius:50%; background:linear-gradient(135deg, #a5d6a7, #66bb6a); display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.6rem; color:#fff; box-shadow:0 4px 12px rgba(76,175,80,0.2); }
.card-link { font-weight:700; font-size:0.9rem; text-decoration:none; color:#e57373; display:inline-flex; align-items:center; gap:6px; }
.card-link:hover { color:#d84315; }

/* 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 15px 30px rgba(0,0,0,0.08); border:3px solid #fff; }
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { padding:10px 0; display:flex; align-items:center; gap:12px; font-size:1.05rem; color:#5a4a2a; }
.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:20px; background:#fff; border:2px solid #e8d5b0; transition:0.3s; }
.stat-item:hover { transform:scale(1.03); border-color:#ffccbc; }
.stat-number { font-size:2.6rem; font-weight:900; color:#2d5a27; background:linear-gradient(135deg, #4caf50, #81c784); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:0.95rem; opacity:0.6; margin-top:8px; color:#5a4a2a; }

/* 内容墙 — 瓜田乱斗 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px; }
.content-wall-item { border-radius:20px; overflow:hidden; background:#fff; border:2px solid #e8d5b0; transition:0.3s; }
.content-wall-item:hover { transform:translateY(-5px); box-shadow:0 12px 30px rgba(139,195,74,0.15); border-color:#81c784; }
.content-wall-item img { width:100%; height:220px; object-fit:cover; border-bottom:3px solid #ffccbc; }
.content-wall-body { padding:24px; }
.content-wall-body h3 { color:#2d5a27; margin-bottom:8px; }
.content-wall-body p { color:#5a4a2a; opacity:0.7; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:2px solid #e8d5b0; border-radius:16px; margin-bottom:10px; overflow:hidden; cursor:pointer; background:#fff; transition:0.3s; }
.faq-item:hover { border-color:#ffccbc; }
.faq-item .faq-question { padding:20px 24px; font-weight:700; display:flex; justify-content:space-between; align-items:center; color:#2d5a27; font-size:1.05rem; }
.faq-item .faq-question::after { content:'🍉'; font-size:1.2rem; transition:0.3s; }
.faq-item.open .faq-question::after { content:'🥒'; }
.faq-item .faq-answer { padding:0 24px 20px; display:none; opacity:0.8; color:#5a4a2a; line-height:1.7; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { padding:64px 24px; text-align:center; border-radius:20px; background:linear-gradient(135deg, #ff8a65, #e57373, #d84315); color:#fff; position:relative; overflow:hidden; }
.cta-banner::before { content:'🍉🥒🍉'; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); font-size:120px; opacity:0.08; letter-spacing:30px; }
.cta-banner h2 { color:#fff; font-size:2.2rem; position:relative; z-index:2; }
.cta-banner .btn-primary { background:#fff; color:#e57373; box-shadow:0 6px 16px rgba(0,0,0,0.1); }
.cta-banner .btn-primary:hover { background:#fce4c8; }

/* 页脚 */
.site-footer { padding:60px 0 28px; background:linear-gradient(135deg, #2d5a27, #1b3a1a); color:#e8d5b0; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand h3 { color:#fff; font-size:1.3rem; margin-bottom:12px; }
.footer-brand p { opacity:0.7; line-height:1.6; }
.footer-col { }
.footer-col h4 { color:#fff; margin-bottom:16px; font-size:1rem; }
.footer-col a { display:block; color:#c8e6c9; text-decoration:none; padding:4px 0; font-size:0.9rem; transition:0.3s; }
.footer-col a:hover { color:#ffccbc; padding-left:5px; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.15); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; opacity:0.6; }

/* 工具类 */
.text-accent { color:#e57373; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#5a4a2a; }
.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; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background:rgba(254,249,231,0.98); padding:24px; gap:16px; border-bottom:2px solid #e8d5b0; }
  .hero h1 { font-size:2.4rem; }
  .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; }
  .hero { min-height:60vh; }
}