/* 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: #fef9ef; 
  color: #3a2e1f; 
}

/* 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: #f7f0e0; 
}

/* 导航 — 固定顶部 */
.site-header { 
  position: fixed; 
  top: 0; 
  left: 0; 
  width: 100%; 
  z-index: 1000; 
  background: rgba(254, 249, 239, 0.92); 
  backdrop-filter: blur(12px); 
  border-bottom: 2px solid #d4c3a3; 
}

.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: 900; 
  font-size: 1.4rem; 
  text-decoration: none; 
  color: #8b5a2b; 
  letter-spacing: 2px; 
}

.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, #f4a261, #e76f51); 
  color: #fff; 
}

.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: #5c4a32; 
  transition: 0.3s; 
  position: relative; 
  padding-bottom: 4px; 
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #e76f51;
  transition: width 0.3s;
}

.main-nav a:hover::after {
  width: 100%;
}

.main-nav a:hover {
  color: #e76f51;
}

.nav-cta { 
  padding: 10px 24px; 
  border-radius: 30px; 
  color: #fff !important; 
  font-weight: 700; 
  background: linear-gradient(135deg, #f4a261, #e76f51); 
  box-shadow: 0 4px 12px rgba(231, 111, 81, 0.25); 
}

.nav-cta::after {
  display: none !important;
}

.menu-toggle { 
  display: none; 
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #8b5a2b;
  cursor: pointer;
}

/* 首页Hero */
.hero { 
  min-height: 75vh; 
  display: flex; 
  align-items: center; 
  background: linear-gradient(135deg, #fef9ef 0%, #f7f0e0 50%, #f0e6d0 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(244, 162, 97, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(231, 111, 81, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content { 
  max-width: 720px; 
  position: relative;
  z-index: 1;
}

.hero-eyebrow { 
  display: inline-block; 
  font-size: 0.8rem; 
  font-weight: 700; 
  padding: 6px 18px; 
  border-radius: 30px; 
  margin-bottom: 20px; 
  background: rgba(244, 162, 97, 0.2); 
  color: #8b5a2b; 
  letter-spacing: 1px;
}

.hero h1 { 
  font-size: 3.2rem; 
  line-height: 1.15; 
  margin-bottom: 20px; 
  color: #3a2e1f; 
  font-weight: 900; 
}

.hero h1 span {
  background: linear-gradient(135deg, #f4a261, #e76f51);
  -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; 
  line-height: 1.6; 
  color: #5c4a32;
}

.hero-buttons { 
  display: flex; 
  gap: 16px; 
}

.hero-image { 
  border-radius: 16px; 
  overflow: hidden; 
  box-shadow: 0 12px 40px rgba(139, 90, 43, 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: 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, #f4a261, #e76f51); 
  box-shadow: 0 4px 16px rgba(231, 111, 81, 0.3); 
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(231, 111, 81, 0.4);
}

.btn-outline { 
  background: transparent; 
  border: 2px solid #d4c3a3; 
  color: #5c4a32; 
}

.btn-outline:hover {
  border-color: #e76f51;
  color: #e76f51;
  background: rgba(231, 111, 81, 0.05);
}

/* 标签/标题 */
.section-label { 
  display: inline-block; 
  font-size: 0.75rem; 
  font-weight: 700; 
  letter-spacing: 3px; 
  margin-bottom: 14px; 
  color: #8b5a2b; 
  text-transform: uppercase; 
}

.section-title { 
  font-size: 2.2rem; 
  margin-bottom: 16px; 
  font-weight: 800; 
  color: #3a2e1f; 
  letter-spacing: -0.5px; 
}

.section-desc { 
  max-width: 600px; 
  opacity: 0.7; 
  margin-bottom: 44px; 
  line-height: 1.7; 
  color: #5c4a32;
}

/* 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: 2px solid #e8dccc; 
  transition: 0.3s; 
  background: #fff; 
  position: relative; 
  overflow: hidden; 
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #f4a261, #e76f51);
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card:hover::before {
  opacity: 1;
}

.category-card:hover { 
  transform: translateY(-5px); 
  box-shadow: 0 8px 30px rgba(139, 90, 43, 0.12); 
  border-color: #d4c3a3;
}

.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, #fef9ef, #f7f0e0); 
  color: #e76f51; 
}

.card-link { 
  font-weight: 700; 
  font-size: 0.85rem; 
  text-decoration: none; 
  color: #e76f51; 
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-link::after {
  content: '→';
  transition: transform 0.3s;
}

.card-link:hover::after {
  transform: translateX(4px);
}

/* 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 30px rgba(139, 90, 43, 0.1); 
}

.feature-image img { 
  width: 100%; 
  height: auto; 
  display: block;
}

.feature-text { 
  padding: 20px 0; 
}

.feature-list { 
  list-style: none; 
  margin-top: 20px; 
}

.feature-list li { 
  padding: 10px 0; 
  display: flex; 
  align-items: center; 
  gap: 12px; 
  font-weight: 500; 
  color: #5c4a32; 
  border-bottom: 1px solid #f0e6d0; 
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li::before { 
  content: '✦'; 
  font-weight: 700; 
  color: #e76f51; 
  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 24px; 
  border-radius: 16px; 
  border: 2px solid #e8dccc; 
  background: #fff; 
  transition: 0.3s; 
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(139, 90, 43, 0.08);
}

.stat-number { 
  font-size: 2.6rem; 
  font-weight: 900; 
  color: #e76f51; 
  line-height: 1; 
}

.stat-label { 
  font-size: 0.9rem; 
  opacity: 0.6; 
  margin-top: 8px; 
  color: #5c4a32; 
  font-weight: 500; 
}

/* 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: 2px solid #e8dccc; 
  transition: 0.3s; 
  background: #fff; 
}

.content-wall-item:hover { 
  transform: translateY(-5px); 
  box-shadow: 0 8px 30px rgba(139, 90, 43, 0.12); 
  border-color: #d4c3a3;
}

.content-wall-item img { 
  width: 100%; 
  height: 220px; 
  object-fit: cover; 
}

.content-wall-body { 
  padding: 24px; 
}

.content-wall-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: #3a2e1f;
}

.content-wall-body p {
  color: #5c4a32;
  opacity: 0.7;
  line-height: 1.6;
}

/* FAQ */
.faq-list { 
  max-width: 800px; 
  margin: 0 auto; 
}

.faq-item { 
  border: 2px solid #e8dccc; 
  border-radius: 14px; 
  margin-bottom: 10px; 
  overflow: hidden; 
  cursor: pointer; 
  transition: 0.3s; 
  background: #fff; 
}

.faq-item:hover {
  border-color: #d4c3a3;
}

.faq-item .faq-question { 
  padding: 18px 24px; 
  font-weight: 700; 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  color: #3a2e1f; 
  font-size: 1.05rem; 
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: #e76f51;
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer { 
  padding: 0 24px 20px; 
  display: none; 
  opacity: 0.75; 
  line-height: 1.7; 
  color: #5c4a32; 
}

.faq-item.open .faq-answer { 
  display: block; 
}

/* CTA横幅 */
.cta-banner { 
  padding: 64px 32px; 
  text-align: center; 
  border-radius: 20px; 
  background: linear-gradient(135deg, #f4a261, #e76f51); 
  color: #fff; 
  position: relative; 
  overflow: hidden; 
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta-banner h2 { 
  color: #fff; 
  font-size: 2rem; 
  margin-bottom: 16px; 
  position: relative; 
  z-index: 1; 
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 500px;
  margin: 0 auto 28px;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary { 
  background: #fff; 
  color: #e76f51; 
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1); 
}

.cta-banner .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
}

/* 页脚 */
.site-footer { 
  padding: 64px 0 32px; 
  background: #3a2e1f; 
  color: #f0e6d0; 
}

.site-footer .container { 
  position: relative; 
}

.footer-grid { 
  display: grid; 
  grid-template-columns: 2fr 1fr 1fr 1fr; 
  gap: 48px; 
}

.footer-brand { 
  max-width: 320px; 
}

.footer-brand .logo {
  color: #f4a261;
  margin-bottom: 16px;
}

.footer-brand p {
  opacity: 0.7;
  line-height: 1.7;
  font-size: 0.9rem;
}

.footer-col h4 {
  color: #fef9ef;
  font-size: 1rem;
  margin-bottom: 16px;
  font-weight: 700;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  padding: 6px 0;
}

.footer-col a {
  color: #d4c3a3;
  text-decoration: none;
  font-size: 0.9rem;
  transition: 0.3s;
}

.footer-col a:hover {
  color: #f4a261;
}

.footer-bottom { 
  border-top: 1px solid rgba(212, 195, 163, 0.2); 
  margin-top: 48px; 
  padding-top: 24px; 
  text-align: center; 
  font-size: 0.85rem; 
  opacity: 0.6; 
  color: #d4c3a3; 
}

/* 工具类 */
.text-accent { 
  color: #e76f51; 
}

.text-center { 
  text-align: center; 
}

.seo-description { 
  max-width: 600px; 
  margin: 0 auto 48px; 
  opacity: 0.7; 
  line-height: 1.7; 
  color: #5c4a32;
}

.mt-0 { 
  margin-top: 0; 
}

.mb-0 { 
  margin-bottom: 0; 
}

/* ⚠️ 响应式 */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.6rem;
  }
  .footer-grid {
    gap: 32px;
  }
}

@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; 
    align-items: center;
    justify-content: center;
  }
  
  .main-nav.open { 
    display: flex; 
    flex-direction: column; 
    position: absolute; 
    top: 72px; 
    left: 0; 
    width: 100%; 
    background: rgba(254, 249, 239, 0.98); 
    padding: 24px 32px; 
    gap: 16px;
    border-bottom: 2px solid #d4c3a3;
    backdrop-filter: blur(12px);
  }

  .main-nav.open a {
    padding: 8px 0;
  }

  .hero {
    min-height: 60vh;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .cta-banner {
    padding: 48px 24px;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }
}

@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; 
    gap: 12px;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .section {
    padding: 56px 0;
  }
}