*, *::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: #fefcf5;
  color: #2c3a4a;
}

/* ===== 核心布局 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section:nth-child(even) { background: #f7f3eb; }

/* ===== 导航 ===== */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(254, 252, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #e0d9cd;
}
.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: 1.25rem; text-decoration: none; color: #2c3a4a;
}
.logo-icon {
  width: 38px; height: 38px; border-radius: 12px 4px 12px 4px;
  background: linear-gradient(135deg, #e8a87c, #d4856b);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: #fff;
}
.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;
  color: #5a6b7a; transition: color 0.25s; letter-spacing: 0.3px;
}
.main-nav a:hover { color: #d4856b; }
.nav-cta {
  padding: 8px 22px; border-radius: 30px; color: #fff !important; font-weight: 600;
  background: linear-gradient(135deg, #e8a87c, #d4856b);
  box-shadow: 0 4px 12px rgba(212, 133, 107, 0.3);
}
.menu-toggle { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; color: #2c3a4a; }

/* ===== Hero ===== */
.hero {
  min-height: 75vh; display: flex; align-items: center;
  background: linear-gradient(160deg, #fefcf5 0%, #f5ede2 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -30%; right: -10%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,168,124,0.15), transparent 70%);
  pointer-events: none;
}
.hero-content { max-width: 720px; position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-block; font-size: 0.8rem; font-weight: 600;
  padding: 6px 18px; border-radius: 30px; margin-bottom: 20px;
  background: #e8d5c4; color: #6b4f3a; letter-spacing: 1px;
}
.hero h1 { font-size: 2.9rem; line-height: 1.15; margin-bottom: 20px; font-weight: 800; color: #1f2a36; }
.hero p { font-size: 1.1rem; opacity: 0.65; max-width: 560px; margin-bottom: 32px; line-height: 1.6; }
.hero-buttons { display: flex; gap: 14px; }
.hero-image { border-radius: 16px; overflow: hidden; box-shadow: 0 12px 40px rgba(0,0,0,0.06); }
.hero-image img { width: 100%; height: auto; display: block; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 30px; border-radius: 30px; font-weight: 600;
  cursor: pointer; border: none; text-decoration: none; transition: all 0.3s;
  font-size: 0.95rem;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #e8a87c, #d4856b);
  box-shadow: 0 4px 16px rgba(212, 133, 107, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(212, 133, 107, 0.45); }
.btn-outline {
  background: transparent; border: 1.5px solid #d4856b; color: #d4856b;
}
.btn-outline:hover { background: rgba(212, 133, 107, 0.06); }

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-block; font-size: 0.75rem; font-weight: 700;
  letter-spacing: 3px; margin-bottom: 12px; color: #d4856b; text-transform: uppercase;
}
.section-title { font-size: 2rem; margin-bottom: 14px; font-weight: 700; color: #1f2a36; }
.section-desc { max-width: 600px; opacity: 0.65; margin-bottom: 40px; line-height: 1.6; }

/* ===== 卡片网格 ===== */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.category-card {
  border-radius: 16px; padding: 32px 28px;
  background: #fff; border: 1px solid #ede7dd;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.06);
  border-color: #e8a87c;
}
.card-icon {
  width: 50px; height: 50px; border-radius: 14px;
  background: #f5ede2; color: #d4856b;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; font-size: 1.4rem;
}
.category-card h3 { font-size: 1.1rem; margin-bottom: 8px; color: #1f2a36; }
.category-card p { font-size: 0.9rem; opacity: 0.65; margin-bottom: 16px; line-height: 1.5; }
.card-link {
  font-weight: 600; font-size: 0.85rem; text-decoration: none;
  color: #d4856b; display: inline-flex; align-items: center; gap: 4px;
}
.card-link::after { content: '→'; transition: transform 0.2s; }
.card-link:hover::after { transform: translateX(4px); }

/* ===== 特性块 ===== */
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature-image { border-radius: 16px; overflow: hidden; box-shadow: 0 8px 24px rgba(0,0,0,0.05); }
.feature-image img { width: 100%; height: auto; display: block; }
.feature-text h3 { font-size: 1.6rem; margin-bottom: 16px; color: #1f2a36; }
.feature-text p { opacity: 0.65; line-height: 1.7; margin-bottom: 20px; }
.feature-list { list-style: none; }
.feature-list li {
  padding: 8px 0; display: flex; align-items: center; gap: 10px;
  font-weight: 500; color: #3a4a5a;
}
.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: 24px; text-align: center; }
.stat-item {
  padding: 28px 20px; border-radius: 16px;
  background: #fff; border: 1px solid #ede7dd;
}
.stat-number { font-size: 2.4rem; font-weight: 800; color: #d4856b; }
.stat-label { font-size: 0.9rem; opacity: 0.6; margin-top: 6px; }

/* ===== 内容墙 ===== */
.content-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.content-wall-item {
  border-radius: 16px; overflow: hidden;
  background: #fff; border: 1px solid #ede7dd;
  transition: all 0.3s;
}
.content-wall-item:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,0.06); }
.content-wall-item img { width: 100%; height: 200px; object-fit: cover; display: block; }
.content-wall-body { padding: 22px; }
.content-wall-body h4 { font-size: 1rem; margin-bottom: 6px; color: #1f2a36; }
.content-wall-body p { font-size: 0.85rem; opacity: 0.6; line-height: 1.5; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid #ede7dd; border-radius: 14px; margin-bottom: 10px;
  overflow: hidden; cursor: pointer; background: #fff;
  transition: box-shadow 0.2s;
}
.faq-item:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.04); }
.faq-item .faq-question {
  padding: 18px 22px; font-weight: 600; color: #1f2a36;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item .faq-question::after {
  content: '+'; font-size: 1.3rem; color: #d4856b; transition: transform 0.3s;
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-item .faq-answer {
  padding: 0 22px 18px; display: none; opacity: 0.7; line-height: 1.6;
}
.faq-item.open .faq-answer { display: block; }

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 60px 24px; text-align: center; border-radius: 20px;
  background: linear-gradient(135deg, #e8a87c, #d4856b);
  color: #fff; box-shadow: 0 12px 32px rgba(212, 133, 107, 0.3);
}
.cta-banner h2 { color: #fff; font-size: 1.8rem; margin-bottom: 12px; }
.cta-banner p { opacity: 0.85; margin-bottom: 24px; }
.cta-banner .btn-primary {
  background: #fff; color: #d4856b; box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 60px 0 28px;
  background: #f7f3eb; border-top: 1px solid #ede7dd;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand h3 { font-size: 1.2rem; margin-bottom: 12px; color: #1f2a36; }
.footer-brand p { opacity: 0.6; font-size: 0.9rem; line-height: 1.6; max-width: 300px; }
.footer-col h4 { font-size: 0.9rem; margin-bottom: 16px; color: #1f2a36; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { text-decoration: none; color: #5a6b7a; font-size: 0.9rem; transition: color 0.2s; }
.footer-col a:hover { color: #d4856b; }
.footer-bottom {
  border-top: 1px solid #e0d9cd; margin-top: 40px;
  padding-top: 20px; text-align: center; font-size: 0.85rem; color: #7a8a9a;
}

/* ===== 工具类 ===== */
.text-accent { color: #d4856b; }
.text-center { text-align: center; }
.seo-description { max-width: 600px; margin: 0 auto 48px; opacity: 0.65; line-height: 1.6; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .feature-block { grid-template-columns: 1fr; gap: 32px; }
  .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: 68px;
    left: 0; width: 100%; background: #fefcf5; padding: 20px 24px;
    border-bottom: 1px solid #ede7dd; gap: 16px;
  }
  .hero h1 { font-size: 2rem; }
}

@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: 1.7rem; }
  .section-title { font-size: 1.5rem; }
}