/* ====================================
   C7娱乐 — 欢乐无界 · 专属设计系统
   风格：暖橙米白 · 柔和渐变 · 轻量杂志风
   色彩：主色 #FF7E67 · 辅色 #5ED4C8 · 背景 #FFF9F0
   ==================================== */

/* 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: #FFF9F0; 
  color: #2D3436; 
  line-height: 1.6;
}

/* 核心布局 — 居中 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding: 80px 0; position: relative; }
.section:nth-child(even) { 
  background: #FFF2E6; 
  /* 利用伪元素营造斜角分割 */
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
  padding: 100px 0;
}

/* 导航 — 固定顶部，半透明毛玻璃 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background: rgba(255, 249, 240, 0.92); 
  backdrop-filter: blur(12px); 
  border-bottom: 1px solid rgba(255, 126, 103, 0.15);
  box-shadow: 0 2px 20px rgba(94, 212, 200, 0.08);
}
.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:1.3rem; text-decoration:none; color: #2D3436; 
  letter-spacing: -0.5px;
}
.logo-icon { 
  width:38px; height:38px; border-radius:12px; 
  display:flex; align-items:center; justify-content:center; 
  font-size:1.2rem; 
  background: linear-gradient(135deg, #FF7E67, #5ED4C8);
  color: #fff;
  box-shadow: 0 4px 10px rgba(255,126,103,0.3);
}
.main-nav { display:flex; align-items:center; gap:20px; list-style:none; }
.main-nav a { 
  text-decoration:none; font-size:0.9rem; font-weight:500; 
  color: #636E72; transition: 0.2s; 
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { color: #FF7E67; border-bottom-color: #FF7E67; }
.nav-cta { 
  padding: 10px 24px; border-radius: 30px; 
  background: linear-gradient(135deg, #FF7E67, #5ED4C8);
  color: #fff!important; font-weight: 600; 
  box-shadow: 0 4px 14px rgba(255,126,103,0.35);
  border: none!important;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,126,103,0.45); }
.menu-toggle { display:none; }

/* 首页Hero — 超大排版 + 背景图案 */
.hero { 
  min-height: 75vh; 
  display:flex; align-items:center; 
  position: relative;
  padding-top: 80px;
  background: linear-gradient(160deg, #FFF9F0 0%, #FFF2E6 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  right: -10%;
  top: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(94,212,200,0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-content { max-width: 700px; }
.hero-eyebrow { 
  display:inline-block; 
  font-size:0.8rem; font-weight:600; 
  padding:6px 18px; border-radius:30px; 
  background: linear-gradient(135deg, #FF7E67, #5ED4C8);
  color: #fff;
  letter-spacing: 1px;
  margin-bottom:20px;
}
.hero h1 { 
  font-size: 3.2rem; line-height:1.1; 
  margin-bottom:18px; 
  font-weight: 800;
  background: linear-gradient(135deg, #2D3436 0%, #FF7E67 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { 
  font-size:1.15rem; opacity: 0.75; 
  max-width:540px; margin-bottom:36px; 
  color: #636E72;
}
.hero-buttons { display:flex; gap:16px; }
.hero-image { 
  border-radius: 18px; 
  overflow:hidden; 
  box-shadow: 0 16px 48px rgba(255,126,103,0.2);
  position: relative;
  transform: perspective(1000px) rotateY(-2deg);
}

/* 按钮体系 */
.btn { 
  display:inline-flex; align-items:center; gap:8px; 
  padding:14px 32px; border-radius: 30px; 
  font-weight:600; cursor:pointer; border:none; 
  text-decoration:none; transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94); 
  font-size: 0.95rem;
}
.btn-primary { 
  color:#fff; 
  background: linear-gradient(135deg, #FF7E67, #5ED4C8);
  box-shadow: 0 6px 20px rgba(255,126,103,0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(255,126,103,0.45); }
.btn-outline { 
  background:transparent; border:2px solid #FF7E67; 
  color: #FF7E67;
}
.btn-outline:hover { background: #FF7E67; color: #fff; }

/* 标签/标题 — 带装饰下划线 */
.section-label { 
  display:inline-block; 
  font-size:0.75rem; font-weight:700; 
  letter-spacing:3px; text-transform: uppercase; 
  color: #FF7E67; 
  position: relative;
  padding-bottom: 6px;
}
.section-label::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, #FF7E67, #5ED4C8);
  border-radius: 2px;
  margin-top: 6px;
}
.section-title { 
  font-size:2.4rem; margin-bottom:16px; 
  font-weight: 800; letter-spacing: -0.5px;
  color: #2D3436;
}
.section-desc { 
  max-width:600px; opacity:0.7; margin-bottom:44px; 
  font-size: 1.05rem; color: #636E72;
}

/* 卡片网格 — 玻璃拟态 + 浮动阴影 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); gap:28px; }
.category-card { 
  border-radius: 18px; padding:32px; 
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,126,103,0.15);
  transition: 0.35s cubic-bezier(0.25,0.46,0.45,0.94);
  box-shadow: 0 8px 24px rgba(94,212,200,0.08);
}
.category-card:hover { 
  transform: translateY(-6px); 
  box-shadow: 0 12px 30px rgba(255,126,103,0.2);
  border-color: #FF7E67;
}
.card-icon { 
  width:54px; height:54px; border-radius:14px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:18px; font-size:1.5rem; color:#fff;
  background: linear-gradient(135deg, #FF7E67, #5ED4C8);
}
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color: #FF7E67; 
  display: inline-flex; align-items: center; gap: 4px;
}
.card-link::after { content: ' →'; transition: margin 0.2s; }
.card-link:hover::after { margin-left: 6px; }

/* 特性块 — 错落布局 */
.feature-block { 
  display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; 
  position: relative;
}
.feature-image { 
  border-radius: 18px; overflow:hidden; 
  box-shadow: 0 12px 36px rgba(94,212,200,0.15);
  transform: rotate(-1deg);
}
.feature-image img { width:100%; height:auto; display: block; }
.feature-text { }
.feature-list { list-style:none; margin-top: 12px; }
.feature-list li { 
  padding:8px 0; display:flex; align-items:center; gap:10px; 
  font-size: 1rem; color: #2D3436;
}
.feature-list li::before { 
  content:'✦'; 
  font-weight:700; 
  color: #FF7E67; 
  font-size: 1.2rem;
}

/* 数据条 — 圆角模块 + 渐变背景 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item { 
  padding:28px 16px; border-radius: 18px; 
  background: #fff;
  border: 1px solid rgba(94,212,200,0.2);
  box-shadow: 0 4px 16px rgba(255,126,103,0.08);
  transition: 0.2s;
}
.stat-item:hover { transform: scale(1.02); }
.stat-number { 
  font-size:2.6rem; font-weight:800; 
  background: linear-gradient(135deg, #FF7E67, #5ED4C8);
  -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: #636E72; }

/* 内容墙 — 卡片画廊 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.content-wall-item { 
  border-radius: 18px; overflow:hidden; 
  background: #fff;
  border: 1px solid rgba(0,0,0,0.06);
  transition: 0.3s; 
  box-shadow: 0 4px 12px rgba(94,212,200,0.06);
}
.content-wall-item:hover { 
  transform: translateY(-4px); 
  box-shadow: 0 12px 32px rgba(255,126,103,0.15);
}
.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:22px; }
.content-wall-body h3 { font-size:1.15rem; margin-bottom:8px; color: #2D3436; }
.content-wall-body p { font-size:0.9rem; color: #636E72; }

/* FAQ — 折叠卡片 */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border: 1px solid rgba(255,126,103,0.15); 
  border-radius: 14px; margin-bottom:10px; 
  overflow:hidden; cursor:pointer; 
  background: #fff;
  transition: 0.2s;
}
.faq-item:hover { border-color: #FF7E67; }
.faq-item .faq-question { 
  padding:18px 22px; font-weight:600; 
  display:flex; justify-content:space-between; 
  color: #2D3436;
  font-size: 1rem;
}
.faq-item .faq-question::after { 
  content: '+'; 
  font-size: 1.4rem; 
  color: #FF7E67; 
  transition: transform 0.3s;
}
.faq-item.open .faq-question::after { transform: rotate(45deg); content: ''; background: none; }
.faq-item .faq-answer { 
  padding:0 22px 18px; display:none; 
  opacity:0.7; color: #636E72; 
  line-height: 1.7;
}
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 — 渐变特色 */
.cta-banner { 
  padding:64px 24px; text-align:center; 
  border-radius: 24px; 
  background: linear-gradient(135deg, #FF7E67 0%, #5ED4C8 100%);
  color: #fff; 
  box-shadow: 0 16px 48px rgba(255,126,103,0.3);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
}
.cta-banner h2 { 
  color: #fff; 
  font-size: 2.2rem; 
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.cta-banner p { color: rgba(255,255,255,0.9); margin-bottom: 28px; }
.cta-banner .btn-primary { 
  background: #fff; 
  color: #FF7E67; 
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.cta-banner .btn-primary:hover { transform: translateY(-3px); }

/* 页脚 — 浅色背景 + 彩色分割线 */
.site-footer { 
  padding:60px 0 32px; 
  background: #FFF2E6; 
  border-top: 1px solid rgba(255,126,103,0.2);
}
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-col { }
.footer-col h4 { 
  font-size:0.9rem; font-weight:700; margin-bottom:16px; 
  color: #2D3436; 
  letter-spacing: 1px;
}
.footer-col ul { list-style:none; }
.footer-col li { margin-bottom:8px; }
.footer-col a { 
  text-decoration:none; font-size:0.9rem; 
  color: #636E72; transition: 0.2s;
}
.footer-col a:hover { color: #FF7E67; }
.footer-bottom { 
  border-top: 2px solid rgba(255,126,103,0.15); 
  margin-top:40px; padding-top:24px; 
  text-align:center; font-size:0.85rem; 
  color: #636E72;
}

/* 工具类 */
.text-accent { color: #FF7E67; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ============================================
   响应式适配
   ============================================ */
@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; 
    background: none; 
    border: none; 
    font-size: 1.4rem; 
    color: #2D3436; 
    cursor: pointer;
  }
  .main-nav.open { 
    display:flex; flex-direction:column; 
    position:absolute; top:68px; left:0; width:100%; 
    background: #FFF9F0; 
    padding:24px; 
    border-bottom: 2px solid rgba(255,126,103,0.2);
    box-shadow: 0 12px 24px rgba(0,0,0,0.06);
  }
  .main-nav.open a { padding: 12px 0; }
  .hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.8rem; }
}

@media (max-width: 480px) {
  .cards-grid { grid-template-columns:1fr; }
  .content-wall { grid-template-columns:1fr; }
  .stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .hero-buttons { flex-direction:column; }
  .hero h1 { font-size: 1.9rem; }
  .section { padding: 60px 0; }
  .section:nth-child(even) { padding: 80px 0; clip-path: none; }
}