/* 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: #faf8f5;
  color: #2d2a24;
}

/* 核心布局 — 必须居中 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; }
.section:nth-child(even) { background:#f5f2ed; }

/* 导航 — 固定顶部 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background:rgba(250,248,245,0.92); 
  backdrop-filter:blur(12px); 
  border-bottom:1px solid #e8e0d6;
}
.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:8px; font-weight:700; font-size:1.2rem; text-decoration:none; color:#2d2a24; }
.logo-icon { 
  width:36px; height:36px; border-radius:50%; 
  display:flex; align-items:center; justify-content:center; 
  font-size:1rem; 
  background: #e8a87c;
  color: #fff;
  font-weight: 800;
}
.main-nav { display:flex; align-items:center; gap:24px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:500; transition:0.2s; color:#5a5245; }
.main-nav a:hover { color:#e8a87c; }
.nav-cta { 
  padding:8px 20px; border-radius:50px; 
  color:#fff!important; font-weight:600; 
  background: #c38d6b;
}
.menu-toggle { display:none; cursor:pointer; background:none; border:none; font-size:1.5rem; color:#2d2a24; }

/* 首页Hero */
.hero { min-height:75vh; display:flex; align-items:center; position:relative; }
.hero::before {
  content: '';
  position: absolute;
  right: -5%;
  top: 10%;
  width: 45%;
  height: 80%;
  background: linear-gradient(135deg, #f5e6d3 0%, #e8d5c0 100%);
  border-radius: 60% 40% 30% 70% / 50% 60% 40% 50%;
  z-index: -1;
  opacity: 0.6;
}
.hero-content { max-width:680px; }
.hero-eyebrow { 
  display:inline-block; font-size:0.8rem; font-weight:600; 
  letter-spacing: 3px;
  padding:6px 18px; border-radius:50px; margin-bottom:16px; 
  background: #e8d5c0;
  color: #6b5a48;
}
.hero h1 { 
  font-size:3.2rem; line-height:1.15; margin-bottom:20px; 
  font-weight: 800;
  letter-spacing: -0.02em;
}
.hero p { font-size:1.1rem; opacity:0.7; max-width:560px; margin-bottom:32px; line-height:1.7; color:#6b5a48; }
.hero-buttons { display:flex; gap:14px; }
.hero-image { border-radius:16px; overflow:hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.08); }

/* 按钮 */
.btn { display:inline-flex; align-items:center; gap:8px; 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: #c38d6b;
  box-shadow: 0 4px 14px rgba(195,141,107,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(195,141,107,0.4);
}
.btn-outline { background:transparent; border:1.5px solid #c38d6b; color:#c38d6b; }
.btn-outline:hover { background:#c38d6b; color:#fff; }

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.75rem; font-weight:600; 
  letter-spacing:3px; margin-bottom:12px; 
  color: #c38d6b;
  text-transform: uppercase;
}
.section-title { 
  font-size:2.2rem; margin-bottom:14px; 
  font-weight: 800;
  letter-spacing: -0.01em;
}
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color:#6b5a48; 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 #e8e0d6; 
  background: #fff;
  transition:0.3s; 
  position: relative;
}
.category-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, #e8a87c, #c38d6b);
  border-radius: 0 0 16px 16px;
  opacity: 0;
  transition: 0.3s;
}
.category-card:hover { 
  transform:translateY(-5px); 
  box-shadow:0 8px 30px rgba(0,0,0,0.06); 
}
.category-card:hover::after { opacity: 1; }
.card-icon { 
  width:52px; height:52px; border-radius:12px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:18px; font-size:1.4rem; 
  background: #f5ede4;
  color: #c38d6b;
}
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color: #c38d6b;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card-link::after { content: '→'; }

/* 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 12px 40px rgba(0,0,0,0.06);
  position: relative;
}
.feature-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(195,141,107,0.2);
  border-radius: 16px;
}
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { 
  padding:8px 0; display:flex; align-items:center; gap:10px; 
  font-size: 1rem;
}
.feature-list li::before { 
  content:'✦'; 
  font-weight:700; 
  color: #e8a87c;
  font-size: 1.1rem;
}

/* 数据条 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:28px; text-align:center; }
.stat-item { 
  padding:32px 20px; border-radius:16px; 
  border:1px solid #e8e0d6; 
  background: #fff;
  transition: 0.3s;
}
.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.04);
}
.stat-number { 
  font-size:2.6rem; font-weight:800; 
  background: linear-gradient(135deg, #c38d6b, #e8a87c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:6px; color:#6b5a48; }

/* 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 #e8e0d6; 
  background: #fff;
  transition:0.3s; 
}
.content-wall-item:hover { 
  transform:translateY(-5px); 
  box-shadow:0 8px 30px rgba(0,0,0,0.06); 
}
.content-wall-item img { width:100%; height:200px; object-fit:cover; }
.content-wall-body { padding:24px; }
.content-wall-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.content-wall-body p { color: #6b5a48; font-size: 0.9rem; line-height: 1.5; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border:1px solid #e8e0d6; 
  border-radius:12px; 
  margin-bottom:10px; 
  overflow:hidden; 
  cursor:pointer; 
  background: #fff;
  transition: 0.2s;
}
.faq-item:hover { border-color: #c38d6b; }
.faq-item .faq-question { 
  padding:18px 24px; font-weight:600; 
  display:flex; justify-content:space-between; 
  align-items: center;
  color: #2d2a24;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.2rem;
  color: #c38d6b;
  transition: 0.3s;
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-item .faq-answer { padding:0 24px 18px; display:none; opacity:0.7; color:#6b5a48; line-height:1.6; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { 
  padding:64px 32px; text-align:center; border-radius:16px; 
  color:#fff; 
  background: linear-gradient(135deg, #c38d6b, #a87454);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 60%);
}
.cta-banner h2 { color:#fff; font-size: 2rem; position: relative; }
.cta-banner p { color: rgba(255,255,255,0.8); margin: 12px 0 28px; position: relative; }
.cta-banner .btn-primary { 
  background:#fff; 
  color: #c38d6b;
  box-shadow: 0 4px 14px rgba(0,0,0,0.1);
  position: relative;
}

/* 页脚 */
.site-footer { 
  padding:64px 0 32px; 
  background: #2d2a24;
  color: rgba(255,255,255,0.7);
}
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-brand h3 { color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.6; }
.footer-col { }
.footer-col h4 { color: #fff; margin-bottom: 16px; font-size: 0.95rem; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.9rem; transition: 0.2s; }
.footer-col ul li a:hover { color: #e8a87c; }
.footer-bottom { 
  border-top:1px solid rgba(255,255,255,0.08); 
  margin-top:48px; padding-top:24px; 
  text-align:center; font-size:0.85rem; 
  color: rgba(255,255,255,0.4);
}

/* 工具类 */
.text-accent { color: #c38d6b; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color:#6b5a48; line-height:1.6; }
.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; width: 44px; height: 44px; }
  .main-nav.open { 
    display:flex; flex-direction:column; 
    position:absolute; top:68px; left:0; width:100%; 
    background:rgba(250,248,245,0.98); 
    backdrop-filter: blur(12px);
    padding:24px; 
    gap: 16px;
    border-bottom: 1px solid #e8e0d6;
  }
  .hero::before { width: 100%; height: 50%; top: auto; bottom: 0; border-radius: 40% 60% 0 0; }
}
@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-title { font-size: 1.6rem; }
}