:root {
  --primary: #FF6B6B;
  --primary-dark: #e55a5a;
  --secondary: #FAC212;
  --accent: #4ECDC4;
  --bg-light: #FEF9E7;
  --bg-alt: #FFF8E1;
  --text: #2D3436;
  --text-light: #636E72;
  --white: #FFFFFF;
  --shadow: 0 8px 32px rgba(250, 194, 18, 0.12);
  --radius: 16px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::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: var(--bg-light);
  color: var(--text);
  line-height: 1.6;
}

/* 核心布局 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }

.section { padding:80px 0; }

.section:nth-child(even) { 
  background: var(--bg-alt);
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 2px solid var(--secondary);
  box-shadow: 0 2px 20px rgba(250, 194, 18, 0.08);
}

.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: var(--text);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 40px; height: 40px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  box-shadow: 0 4px 12px rgba(255, 107, 107, 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: var(--text); position: relative; padding: 4px 0;
  transition: var(--transition);
}

.main-nav a::after {
  content: ''; position: absolute; left: 0; bottom: -2px;
  width: 0; height: 3px; background: var(--primary); border-radius: 2px;
  transition: var(--transition);
}

.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
  padding: 10px 24px; border-radius: 50px;
  color: var(--white) !important; font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 4px 14px rgba(255, 107, 107, 0.35);
  transition: var(--transition);
}

.nav-cta:hover { transform: scale(1.05); box-shadow: 0 6px 24px rgba(255, 107, 107, 0.4); }

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

.menu-toggle { display: none; font-size: 1.8rem; background: none; border: none; cursor: pointer; color: var(--text); }

/* 首页Hero */
.hero {
  min-height: 85vh; display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%; right: -20%;
  width: 800px; height: 800px;
  background: radial-gradient(circle at 30% 40%, rgba(255, 107, 107, 0.15), rgba(250, 194, 18, 0.05));
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -15%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(78, 205, 196, 0.1), transparent);
  border-radius: 50%;
  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; margin-bottom: 20px;
  background: linear-gradient(135deg, var(--secondary), #fbbf24);
  color: #5A3E00;
  text-transform: uppercase; letter-spacing: 2px;
}

.hero h1 { 
  font-size: 3.2rem; line-height: 1.15; margin-bottom: 20px;
  font-weight: 800; letter-spacing: -1px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p { 
  font-size: 1.15rem; opacity: 0.8; max-width: 560px; margin-bottom: 36px;
  color: var(--text-light); line-height: 1.7;
}

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

.hero-image { 
  border-radius: var(--radius); overflow: hidden;
  position: absolute; right: -5%; top: 50%; transform: translateY(-50%);
  width: 480px; height: 360px;
  box-shadow: -20px 20px 40px rgba(0,0,0,0.06);
  border: 4px solid var(--white);
  display: none; /* 默认隐藏，如果HTML有则显示 */
}

.hero-image img { width: 100%; height: 100%; object-fit: cover; }

@media (min-width: 1024px) {
  .hero-image { display: block; }
}

/* 按钮 */
.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: var(--transition);
  font-size: 0.95rem;
}

.btn-primary { 
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 6px 20px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover { 
  transform: translateY(-2px); 
  box-shadow: 0 8px 28px rgba(255, 107, 107, 0.4);
}

.btn-outline { 
  background: transparent; border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover { 
  background: var(--primary); color: var(--white);
  border-color: var(--primary);
}

/* 标签/标题 */
.section-label { 
  display: inline-block; font-size: 0.8rem; font-weight: 700;
  letter-spacing: 3px; margin-bottom: 14px;
  color: var(--primary); text-transform: uppercase;
  position: relative; padding-left: 40px;
}

.section-label::before { 
  content: ''; position: absolute; left: 0; top: 50%;
  width: 28px; height: 2px; background: var(--secondary);
  transform: translateY(-50%);
}

.section-title { 
  font-size: 2.4rem; margin-bottom: 16px;
  font-weight: 800; letter-spacing: -0.5px;
}

.section-desc { 
  max-width: 600px; opacity: 0.8; margin-bottom: 48px;
  color: var(--text-light); font-size: 1.05rem;
}

/* 卡片网格 */
.cards-grid { 
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 28px;
}

.category-card { 
  border-radius: var(--radius); padding: 32px 28px;
  border: 2px solid rgba(250, 194, 18, 0.15);
  background: var(--white);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.category-card::before { 
  content: ''; position: absolute; top: 0; left: 0;
  width: 100%; height: 6px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}

.category-card:hover { 
  transform: translateY(-6px); 
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

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

.card-icon { 
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 1.5rem;
  background: linear-gradient(135deg, var(--secondary), #fbbf24);
  color: #5A3E00;
}

.card-link { 
  font-weight: 700; font-size: 0.9rem; text-decoration: none;
  color: var(--primary); 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: 64px; align-items: center;
}

.feature-image { 
  border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
  border: 3px solid var(--white);
}

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

.feature-text { }

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

.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: var(--secondary);
  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: 32px 16px; border-radius: var(--radius);
  border: 2px solid rgba(255, 107, 107, 0.1);
  background: var(--white);
  transition: var(--transition);
  position: relative;
}

.stat-item:hover { 
  transform: scale(1.03);
  box-shadow: var(--shadow);
  border-color: var(--secondary);
}

.stat-number { 
  font-size: 2.6rem; font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label { 
  font-size: 0.95rem; opacity: 0.7; margin-top: 8px;
  color: var(--text-light);
}

/* 内容墙 */
.content-wall { 
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px;
}

.content-wall-item { 
  border-radius: var(--radius); overflow: hidden;
  border: 2px solid rgba(0,0,0,0.04);
  background: var(--white);
  transition: var(--transition);
}

.content-wall-item:hover { 
  transform: translateY(-5px); 
  box-shadow: var(--shadow);
  border-color: var(--secondary);
}

.content-wall-item img { 
  width: 100%; height: 200px; object-fit: cover;
  transition: transform 0.4s;
}

.content-wall-item:hover img { transform: scale(1.05); }

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

.content-wall-body h3 { font-size: 1.1rem; margin-bottom: 8px; }

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

.faq-item { 
  border: 2px solid rgba(255, 107, 107, 0.1);
  border-radius: 14px; margin-bottom: 12px; overflow: hidden;
  cursor: pointer; transition: var(--transition);
  background: var(--white);
}

.faq-item:hover { border-color: var(--secondary); }

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

.faq-item .faq-question::after { 
  content: '+'; font-size: 1.4rem; font-weight: 800;
  color: var(--primary); transition: transform 0.3s;
}

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

.faq-item .faq-answer { 
  padding: 0 24px 20px; display: none; opacity: 0.85;
  color: var(--text-light); line-height: 1.7;
}

.faq-item.open .faq-answer { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 0.85; } }

/* CTA横幅 */
.cta-banner { 
  padding: 64px 32px; text-align: center; border-radius: 24px;
  background: linear-gradient(135deg, var(--primary), #fc8b6b, var(--secondary));
  color: var(--white);
  position: relative; overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}

.cta-banner h2 { 
  color: var(--white); font-size: 2.2rem; margin-bottom: 16px;
  position: relative;
}

.cta-banner p { 
  color: rgba(255,255,255,0.9); font-size: 1.1rem; margin-bottom: 28px;
  position: relative;
}

.cta-banner .btn-primary { 
  background: var(--white); color: var(--primary);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  font-size: 1rem;
}

.cta-banner .btn-primary:hover { 
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.15);
}

/* 页脚 */
.site-footer { 
  padding: 64px 0 32px;
  background: linear-gradient(180deg, var(--bg-light), #faf3e0);
  border-top: 2px solid rgba(250, 194, 18, 0.15);
}

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

.footer-brand { }

.footer-brand .logo { margin-bottom: 12px; }

.footer-brand p { color: var(--text-light); font-size: 0.9rem; max-width: 280px; }

.footer-col { }

.footer-col h4 { 
  font-size: 0.95rem; font-weight: 700; margin-bottom: 16px;
  color: var(--primary); text-transform: uppercase; letter-spacing: 1px;
}

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

.footer-col ul li { margin-bottom: 8px; }

.footer-col ul a { 
  color: var(--text); text-decoration: none; font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul a:hover { color: var(--primary); padding-left: 4px; }

.footer-bottom { 
  border-top: 1px solid rgba(255, 107, 107, 0.1);
  margin-top: 40px; padding-top: 24px; 
  text-align: center; font-size: 0.85rem; color: var(--text-light);
}

/* 工具类 */
.text-accent { color: var(--primary); }

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

.seo-description { 
  max-width: 600px; margin: 0 auto 48px; 
  opacity: 0.8; color: var(--text-light); font-size: 0.95rem;
}

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

/* 响应式 */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.6rem; }
  .feature-block { gap: 40px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero-image { display: none; }
}

@media (max-width: 768px) {
  .main-nav { 
    display: none; 
    position: absolute; top: 72px; left: 0; width: 100%;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    padding: 24px; flex-direction: column; gap: 16px;
    border-bottom: 2px solid var(--secondary);
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
  }
  .main-nav.open { display: flex; }
  .menu-toggle { display: flex; }
  .hero { min-height: 70vh; }
  .hero h1 { font-size: 2.2rem; }
  .feature-block { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .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; gap: 12px; }
  .hero h1 { font-size: 1.8rem; }
  .hero .btn { width: 100%; justify-content: center; }
  .stat-item { padding: 24px 12px; }
}