/* 吃瓜在线 - 西瓜夏日美学系统 */
*, *::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:#FFF8F0; color:#2D1B00; }

/* 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:linear-gradient(135deg, #FFF3E6 0%, #FFE8D0 100%); }

/* 导航 — 西瓜皮渐变 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:linear-gradient(180deg, rgba(255,248,240,0.98) 0%, rgba(255,248,240,0.92) 100%); backdrop-filter:blur(12px); border-bottom:2px solid #FFB07C; }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:72px; max-width:1200px; margin:0 auto; padding:0 24px; }
.logo { display:flex; align-items:center; gap:10px; font-weight:800; font-size:1.4rem; text-decoration:none; color:#2D1B00; letter-spacing:-0.5px; }
.logo-icon { width:40px; height:40px; border-radius:50%; background:linear-gradient(135deg, #FF6B35 0%, #FF8F5E 100%); display:flex; align-items:center; justify-content:center; font-size:1.2rem; color:#fff; box-shadow:0 4px 12px rgba(255,107,53,0.3); }
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.95rem; font-weight:600; color:#5A3A1A; transition:0.3s; position:relative; padding:4px 0; }
.main-nav a::after { content:''; position:absolute; bottom:-2px; left:0; width:0; height:2px; background:linear-gradient(90deg, #FF6B35, #FFB07C); transition:0.3s; }
.main-nav a:hover::after { width:100%; }
.main-nav a:hover { color:#FF6B35; }
.nav-cta { padding:10px 24px; border-radius:50px; background:linear-gradient(135deg, #FF6B35 0%, #FF8F5E 100%); color:#fff!important; font-weight:700; box-shadow:0 4px 15px rgba(255,107,53,0.3); }
.nav-cta:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(255,107,53,0.4); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; }

/* 首页Hero — 西瓜剖面 */
.hero { min-height:75vh; display:flex; align-items:center; background:radial-gradient(ellipse at 20% 50%, #FFE8D0 0%, transparent 60%), radial-gradient(ellipse at 80% 30%, #FFD4B8 0%, transparent 50%); position:relative; overflow:hidden; }
.hero::before { content:'🍉'; position:absolute; right:-60px; top:10%; font-size:25rem; opacity:0.08; transform:rotate(15deg); pointer-events:none; }
.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:50px; background:linear-gradient(135deg, #FF6B35, #FFB07C); color:#fff; margin-bottom:18px; letter-spacing:1px; box-shadow:0 4px 12px rgba(255,107,53,0.25); }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:20px; color:#2D1B00; letter-spacing:-1px; }
.hero h1 span { background:linear-gradient(135deg, #FF6B35 0%, #FFB07C 100%); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size:1.15rem; opacity:0.75; max-width:560px; margin-bottom:36px; color:#5A3A1A; line-height:1.7; }
.hero-buttons { display:flex; gap:16px; }
.hero-image { border-radius:20px; overflow:hidden; box-shadow:0 20px 60px rgba(255,107,53,0.15); border:3px solid #FFE8D0; }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 — 多汁风格 */
.btn { display:inline-flex; align-items:center; gap:10px; padding:14px 32px; border-radius:50px; font-weight:700; cursor:pointer; border:none; text-decoration:none; transition:0.3s; font-size:0.95rem; }
.btn-primary { background:linear-gradient(135deg, #FF6B35 0%, #FF8F5E 100%); color:#fff; box-shadow:0 4px 15px rgba(255,107,53,0.3); }
.btn-primary:hover { transform:translateY(-3px); box-shadow:0 8px 25px rgba(255,107,53,0.4); }
.btn-outline { background:transparent; border:2px solid #FF6B35; color:#FF6B35; }
.btn-outline:hover { background:linear-gradient(135deg, #FF6B35 0%, #FF8F5E 100%); color:#fff; border-color:transparent; }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.8rem; font-weight:700; letter-spacing:3px; margin-bottom:14px; color:#FF6B35; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:16px; color:#2D1B00; letter-spacing:-0.5px; }
.section-title::after { content:' 🍉'; font-size:1.8rem; }
.section-desc { max-width:600px; opacity:0.7; margin-bottom:44px; color:#5A3A1A; line-height:1.7; }

/* 卡片网格 — 西瓜籽点缀 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.category-card { border-radius:16px; padding:32px; background:#fff; border:2px solid #FFE8D0; transition:0.3s; position:relative; overflow:hidden; }
.category-card::before { content:'🍉'; position:absolute; right:-20px; bottom:-20px; font-size:5rem; opacity:0.06; pointer-events:none; }
.category-card:hover { transform:translateY(-5px); box-shadow:0 12px 40px rgba(255,107,53,0.12); border-color:#FFB07C; }
.card-icon { width:52px; height:52px; border-radius:14px; background:linear-gradient(135deg, #FFE8D0 0%, #FFD4B8 100%); display:flex; align-items:center; justify-content:center; margin-bottom:18px; font-size:1.5rem; color:#FF6B35; }
.card-link { font-weight:700; font-size:0.9rem; text-decoration:none; color:#FF6B35; display:inline-flex; align-items:center; gap:6px; }
.card-link:hover { gap:10px; }

/* 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 40px rgba(255,107,53,0.1); border:3px solid #FFE8D0; }
.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:1.05rem; color:#5A3A1A; }
.feature-list li::before { content:'🍉'; font-weight:700; font-size:1.2rem; }

/* 数据条 — 西瓜配色 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:28px; text-align:center; }
.stat-item { padding:28px 20px; border-radius:16px; background:#fff; border:2px solid #FFE8D0; transition:0.3s; }
.stat-item:hover { transform:translateY(-3px); box-shadow:0 8px 25px rgba(255,107,53,0.1); border-color:#FFB07C; }
.stat-number { font-size:2.5rem; font-weight:800; color:#FF6B35; letter-spacing:-1px; }
.stat-number::after { content:'+'; font-size:1.8rem; color:#FFB07C; }
.stat-label { font-size:0.9rem; opacity:0.65; margin-top:8px; color:#5A3A1A; }

/* 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; background:#fff; border:2px solid #FFE8D0; transition:0.3s; }
.content-wall-item:hover { transform:translateY(-5px); box-shadow:0 12px 40px rgba(255,107,53,0.12); border-color:#FFB07C; }
.content-wall-item img { width:100%; height:220px; object-fit:cover; border-bottom:3px solid #FFE8D0; }
.content-wall-body { padding:24px; }
.content-wall-body h3 { color:#2D1B00; margin-bottom:8px; }
.content-wall-body p { color:#5A3A1A; opacity:0.7; font-size:0.9rem; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { background:#fff; border:2px solid #FFE8D0; border-radius:14px; margin-bottom:10px; overflow:hidden; cursor:pointer; transition:0.3s; }
.faq-item:hover { border-color:#FFB07C; }
.faq-item .faq-question { padding:18px 24px; font-weight:700; display:flex; justify-content:space-between; align-items:center; color:#2D1B00; font-size:1.05rem; }
.faq-item .faq-question::after { content:'🍉'; font-size:1.2rem; transition:0.3s; }
.faq-item.open .faq-question::after { transform:rotate(180deg); }
.faq-item .faq-answer { padding:0 24px 20px; display:none; opacity:0.75; color:#5A3A1A; line-height:1.7; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 — 渐变西瓜 */
.cta-banner { padding:64px 32px; text-align:center; border-radius:20px; background:linear-gradient(135deg, #FF6B35 0%, #FF8F5E 50%, #FFB07C 100%); color:#fff; position:relative; overflow:hidden; }
.cta-banner::before { content:'🍉🍉🍉'; position:absolute; top:-30px; right:-20px; font-size:8rem; opacity:0.1; pointer-events:none; }
.cta-banner h2 { color:#fff; font-size:2.2rem; margin-bottom:16px; }
.cta-banner p { color:rgba(255,255,255,0.85); margin-bottom:28px; }
.cta-banner .btn-primary { background:#fff; color:#FF6B35; box-shadow:0 4px 15px rgba(0,0,0,0.1); }
.cta-banner .btn-primary:hover { transform:translateY(-3px); box-shadow:0 8px 25px rgba(0,0,0,0.15); }

/* 页脚 — 西瓜底部 */
.site-footer { padding:64px 0 32px; background:linear-gradient(180deg, #FFF8F0 0%, #FFE8D0 100%); border-top:3px solid #FFB07C; }
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-brand .logo { margin-bottom:16px; }
.footer-brand p { color:#5A3A1A; opacity:0.7; font-size:0.9rem; line-height:1.7; }
.footer-col h4 { color:#2D1B00; font-size:1rem; margin-bottom:16px; font-weight:700; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul a { text-decoration:none; color:#5A3A1A; opacity:0.7; font-size:0.9rem; transition:0.3s; }
.footer-col ul a:hover { opacity:1; color:#FF6B35; }
.footer-bottom { border-top:2px solid #FFE8D0; margin-top:48px; padding-top:24px; text-align:center; font-size:0.85rem; color:#5A3A1A; opacity:0.6; }

/* 工具类 */
.text-accent { color:#FF6B35; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#5A3A1A; line-height:1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .hero h1 { font-size:2.4rem; }
  .feature-block { grid-template-columns:1fr; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; background:none; border:none; font-size:1.5rem; cursor:pointer; color:#FF6B35; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:72px; left:0; width:100%; background:#FFF8F0; padding:24px; border-bottom:2px solid #FFB07C; gap:16px; }
}
@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:2rem; }
  .section-title { font-size:1.8rem; }
}