/* ============================================
   币市风云 · 独特视觉系统
   灵感：动态波浪 + 透明玻璃 + 霓虹渐变
   主色：珊瑚橙 → 浅紫渐变，搭配青绿点缀
   背景：米白渐变 + 半透明玻璃层
   ============================================ */

/* 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: linear-gradient(165deg, #fff8f0 0%, #f0f4ff 60%, #e8f8f5 100%);
  color: #2d2b3e;
  line-height: 1.6;
}

/* 核心布局 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position: relative; }
.section:nth-child(even) { 
  background: rgba(255,255,255,0.6); 
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.8);
}

/* 导航 — 固定顶部 + 玻璃态 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background: rgba(255, 248, 240, 0.75);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}
.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:1.3rem; text-decoration:none; 
  background: linear-gradient(135deg, #ff7a5c, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.logo-icon { 
  width:38px; height:38px; 
  border-radius: 12px; 
  background: linear-gradient(135deg, #ff7a5c, #a78bfa);
  display:flex; align-items:center; justify-content:center; 
  font-size:1.1rem; color: #fff;
  box-shadow: 0 4px 12px rgba(167, 139, 250, 0.3);
}
.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: #4a485a; transition:0.3s; position: relative;
  padding: 4px 0;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #ff7a5c, #a78bfa);
  transition: width 0.3s ease;
}
.main-nav a:hover { color: #ff7a5c; }
.main-nav a:hover::after { width: 100%; }
.nav-cta { 
  padding:10px 24px; border-radius:50px; 
  background: linear-gradient(135deg, #ff7a5c, #a78bfa);
  color:#fff!important; font-weight:600; 
  box-shadow: 0 4px 15px rgba(255, 122, 92, 0.3);
  transition: all 0.3s ease;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { 
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 122, 92, 0.4);
  color: #fff !important;
}
.menu-toggle { display:none; }

/* 首页Hero — 动态波浪背景 */
.hero { 
  min-height:80vh; display:flex; align-items:center; 
  position: relative;
  background: 
    radial-gradient(ellipse 80% 60% at 10% 90%, rgba(255, 122, 92, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(167, 139, 250, 0.1) 0%, transparent 50%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 122, 92, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.05); }
}
.hero-content { max-width:720px; position: relative; z-index: 2; }
.hero-eyebrow { 
  display:inline-block; font-size:0.8rem; font-weight:700; 
  padding:6px 18px; border-radius:50px; 
  background: linear-gradient(135deg, rgba(255, 122, 92, 0.15), rgba(167, 139, 250, 0.15));
  color: #ff7a5c;
  margin-bottom:20px; 
  letter-spacing: 2px;
  text-transform: uppercase;
}
.hero h1 { 
  font-size:3.2rem; line-height:1.15; margin-bottom:20px; 
  background: linear-gradient(135deg, #2d2b3e 0%, #ff7a5c 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}
.hero p { 
  font-size:1.1rem; opacity:0.7; max-width:560px; margin-bottom:36px; 
  color: #5a5870;
}
.hero-buttons { display:flex; gap:16px; }
.hero-image { 
  border-radius:20px; overflow:hidden; 
  box-shadow: 0 20px 60px rgba(167, 139, 250, 0.15);
  position: relative;
}
.hero-image img { width:100%; height:auto; display: block; }

/* 按钮 — 圆润 + 渐变 */
.btn { 
  display:inline-flex; align-items:center; gap:10px; 
  padding:14px 32px; border-radius:50px; font-weight:600; 
  cursor:pointer; border:none; text-decoration:none; 
  transition:0.3s ease; font-size:0.95rem;
}
.btn-primary { 
  background: linear-gradient(135deg, #ff7a5c, #a78bfa);
  color:#fff; 
  box-shadow: 0 4px 15px rgba(255, 122, 92, 0.3);
}
.btn-primary:hover { 
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 122, 92, 0.4);
}
.btn-outline { 
  background:transparent; 
  border:2px solid transparent;
  border-image: linear-gradient(135deg, #ff7a5c, #a78bfa) 1;
  border-radius: 50px;
  color: #ff7a5c;
  position: relative;
}
.btn-outline::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50px;
  background: linear-gradient(135deg, #ff7a5c, #a78bfa);
  z-index: -1;
  opacity: 0.1;
}
.btn-outline:hover {
  background: linear-gradient(135deg, rgba(255, 122, 92, 0.05), rgba(167, 139, 250, 0.05));
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.75rem; font-weight:700; 
  letter-spacing:3px; margin-bottom:12px; 
  color: #a78bfa;
  text-transform: uppercase;
}
.section-title { 
  font-size:2.2rem; margin-bottom:14px; 
  background: linear-gradient(135deg, #2d2b3e, #ff7a5c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color: #5a5870; }

/* 卡片网格 — 玻璃卡片 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:28px; }
.category-card { 
  border-radius:16px; padding:32px; 
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: 0 8px 32px rgba(0,0,0,0.04);
  transition:0.4s ease; 
}
.category-card:hover { 
  transform:translateY(-6px); 
  box-shadow: 0 12px 40px rgba(167, 139, 250, 0.12);
  background: rgba(255,255,255,0.8);
  border-color: rgba(255, 122, 92, 0.2);
}
.card-icon { 
  width:52px; height:52px; border-radius:14px; 
  background: linear-gradient(135deg, rgba(255, 122, 92, 0.1), rgba(167, 139, 250, 0.1));
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:18px; font-size:1.4rem; 
  color: #ff7a5c;
}
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color: #a78bfa;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: 0.2s;
}
.card-link:hover { color: #ff7a5c; gap: 8px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.feature-image { 
  border-radius:20px; overflow:hidden; 
  box-shadow: 0 16px 48px rgba(167, 139, 250, 0.1);
  border: 1px solid rgba(255,255,255,0.6);
}
.feature-image img { width:100%; height:auto; display: block; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { 
  padding:8px 0; display:flex; align-items:center; gap:10px; 
  font-weight: 500;
}
.feature-list li::before { 
  content:'✓'; font-weight:700; 
  color: #ff7a5c;
  background: rgba(255, 122, 92, 0.1);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

/* 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: rgba(255,255,255,0.5);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.8);
  transition: 0.3s;
}
.stat-item:hover {
  background: rgba(255,255,255,0.8);
  transform: translateY(-3px);
}
.stat-number { 
  font-size:2.4rem; font-weight:800; 
  background: linear-gradient(135deg, #ff7a5c, #a78bfa);
  -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: #5a5870; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.content-wall-item { 
  border-radius:16px; overflow:hidden; 
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.8);
  transition:0.4s ease; 
}
.content-wall-item:hover { 
  transform:translateY(-6px); 
  box-shadow: 0 12px 40px rgba(167, 139, 250, 0.1);
}
.content-wall-item img { 
  width:100%; height:200px; object-fit:cover; 
  border-bottom: 1px solid rgba(255,255,255,0.5);
}
.content-wall-body { padding:24px; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border: 1px solid rgba(255,255,255,0.6); 
  border-radius:12px; margin-bottom:10px; 
  overflow:hidden; cursor:pointer; 
  background: rgba(255,255,255,0.4);
  backdrop-filter: blur(4px);
  transition: 0.3s;
}
.faq-item:hover {
  background: rgba(255,255,255,0.7);
}
.faq-item .faq-question { 
  padding:18px 24px; font-weight:600; 
  display:flex; justify-content:space-between; 
  color: #2d2b3e;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.2rem;
  color: #ff7a5c;
  transition: 0.3s;
}
.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}
.faq-item .faq-answer { 
  padding:0 24px 18px; display:none; 
  opacity:0.7; color: #5a5870; 
}
.faq-item.open .faq-answer { display:block; }
.faq-item.open { 
  border-color: rgba(255, 122, 92, 0.3);
  background: rgba(255,255,255,0.8);
}

/* CTA横幅 */
.cta-banner { 
  padding:64px 24px; text-align:center; border-radius:20px; 
  background: linear-gradient(135deg, #ff7a5c, #a78bfa);
  color:#fff; 
  box-shadow: 0 20px 60px rgba(167, 139, 250, 0.2);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-banner h2 { 
  color:#fff; 
  font-size: 2rem;
  margin-bottom: 16px;
  -webkit-text-fill-color: #fff;
}
.cta-banner .section-desc { color: rgba(255,255,255,0.8); max-width: 500px; margin: 0 auto 32px; }
.cta-banner .btn-primary { 
  background:#fff; color:#ff7a5c; 
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.cta-banner .btn-primary:hover { 
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* 页脚 */
.site-footer { 
  padding:64px 0 32px; 
  background: linear-gradient(135deg, #2d2b3e, #3a3850);
  color: rgba(255,255,255,0.8);
}
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-col { }
.footer-col h4 { 
  color: #fff; 
  margin-bottom: 16px; 
  font-size: 0.95rem;
  letter-spacing: 1px;
}
.footer-col a { 
  display: block; 
  color: rgba(255,255,255,0.6); 
  text-decoration: none;
  padding: 4px 0;
  font-size: 0.9rem;
  transition: 0.2s;
}
.footer-col a:hover { color: #ff7a5c; }
.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: #ff7a5c; }
.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 */
@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; gap: 32px; }
  .main-nav { display:none; }
  .menu-toggle { display:flex; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:72px; left:0; width:100%; background: rgba(255,248,240,0.98); padding:24px; gap: 16px; }
  .hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.6rem; }
  .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; }
  .hero h1 { font-size: 1.8rem; }
  .stat-number { font-size: 1.8rem; }
}