/* bitmart交易所 - 全新视觉设计系统 */
/* 风格：渐变流体 + 野兽派解构 + 深紫-青柠对比 */

/* 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: #0a0a12;
  color: #e8e8f0;
}

/* 核心布局 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:100px 0; position: relative; }
.section:nth-child(even) { 
  background: linear-gradient(135deg, #12121e 0%, #1a1a2e 100%);
}
.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #a3e635, transparent);
  opacity: 0.3;
}

/* 导航 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background: rgba(10,10,18,0.92); 
  backdrop-filter:blur(20px); 
  border-bottom:1px solid rgba(163,230,53,0.15);
}
.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:12px; 
  font-weight:800; font-size:1.4rem; text-decoration:none; 
  color: #f0f0f8;
  letter-spacing: -0.5px;
}
.logo-icon { 
  width:40px; height:40px; border-radius:12px; 
  display:flex; align-items:center; justify-content:center; 
  font-size:1.2rem;
  background: linear-gradient(135deg, #a3e635, #6ee7b7);
  color: #0a0a12;
  font-weight: 900;
}
.main-nav { display:flex; align-items:center; gap:32px; list-style:none; }
.main-nav a { 
  text-decoration:none; font-size:0.9rem; font-weight:500; 
  transition:0.3s; color: #b0b0c0;
  position: relative;
  padding: 4px 0;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #a3e635;
  transition: 0.3s;
}
.main-nav a:hover { color: #a3e635; }
.main-nav a:hover::after { width: 100%; }
.nav-cta { 
  padding:10px 24px; border-radius:10px; 
  background: linear-gradient(135deg, #a3e635, #6ee7b7);
  color: #0a0a12!important; font-weight:700;
  box-shadow: 0 4px 20px rgba(163,230,53,0.3);
}
.nav-cta::after { display: none!important; }
.menu-toggle { display:none; }

/* Hero */
.hero { 
  min-height:80vh; display:flex; align-items:center; 
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(163,230,53,0.08) 0%, 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:700; 
  padding:6px 16px; border-radius:30px; margin-bottom:20px;
  background: rgba(163,230,53,0.12);
  color: #a3e635;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero h1 { 
  font-size:3.6rem; line-height:1.1; margin-bottom:24px;
  font-weight: 900;
  background: linear-gradient(135deg, #f0f0f8 0%, #a3e635 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { 
  font-size:1.2rem; opacity:0.7; max-width:560px; margin-bottom:36px;
  line-height: 1.6;
  color: #c0c0d0;
}
.hero-buttons { display:flex; gap:16px; }

/* 按钮 */
.btn { 
  display:inline-flex; align-items:center; gap:10px; 
  padding:14px 32px; border-radius:12px; font-weight:700; 
  cursor:pointer; border:none; text-decoration:none; transition:0.3s;
  font-size: 0.95rem;
}
.btn-primary { 
  background: linear-gradient(135deg, #a3e635, #6ee7b7);
  color: #0a0a12;
  box-shadow: 0 4px 24px rgba(163,230,53,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(163,230,53,0.5);
}
.btn-outline { 
  background:transparent; border:2px solid rgba(163,230,53,0.4); 
  color: #a3e635;
}
.btn-outline:hover {
  border-color: #a3e635;
  background: rgba(163,230,53,0.08);
}

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.75rem; font-weight:700; 
  letter-spacing:3px; margin-bottom:16px;
  color: #a3e635;
  text-transform: uppercase;
}
.section-title { 
  font-size:2.4rem; margin-bottom:16px; font-weight: 900;
  line-height: 1.2;
}
.section-desc { 
  max-width:600px; opacity:0.7; margin-bottom:48px;
  font-size: 1.05rem;
  color: #b0b0c0;
}

/* 卡片网格 */
.cards-grid { 
  display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px;
}
.category-card { 
  border-radius:16px; padding:32px; 
  background: rgba(255,255,255,0.03);
  border:1px solid rgba(163,230,53,0.1);
  transition:0.4s;
  backdrop-filter: blur(10px);
}
.category-card:hover { 
  transform:translateY(-6px); 
  border-color: rgba(163,230,53,0.3);
  box-shadow:0 8px 32px rgba(0,0,0,0.3);
  background: rgba(163,230,53,0.05);
}
.card-icon { 
  width:52px; height:52px; border-radius:14px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:20px; font-size:1.5rem;
  background: linear-gradient(135deg, rgba(163,230,53,0.15), rgba(110,231,183,0.1));
  color: #a3e635;
}
.card-link { 
  font-weight:700; font-size:0.85rem; text-decoration:none; 
  color: #a3e635;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 特性块 */
.feature-block { 
  display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center;
}
.feature-image { 
  border-radius:16px; overflow:hidden; 
  border: 1px solid rgba(163,230,53,0.1);
  box-shadow: 0 8px 40px rgba(0,0,0,0.3);
}
.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-size: 1rem;
}
.feature-list li::before { 
  content:'→'; font-weight:700; color: #a3e635;
}

/* 数据条 */
.stats-bar { 
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center;
}
.stat-item { 
  padding:32px 24px; border-radius:16px; 
  background: rgba(255,255,255,0.02);
  border:1px solid rgba(163,230,53,0.08);
  transition: 0.3s;
}
.stat-item:hover {
  border-color: rgba(163,230,53,0.25);
  background: rgba(163,230,53,0.04);
}
.stat-number { 
  font-size:2.8rem; font-weight:900; 
  background: linear-gradient(135deg, #a3e635, #6ee7b7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; color: #b0b0c0; }

/* 内容墙 */
.content-wall { 
  display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px;
}
.content-wall-item { 
  border-radius:16px; overflow:hidden; 
  background: rgba(255,255,255,0.02);
  border:1px solid rgba(163,230,53,0.08);
  transition:0.4s;
}
.content-wall-item:hover { 
  transform:translateY(-4px); 
  border-color: rgba(163,230,53,0.25);
  box-shadow:0 8px 32px rgba(0,0,0,0.3);
}
.content-wall-item img { 
  width:100%; height:220px; object-fit:cover;
  transition: 0.4s;
}
.content-wall-item:hover img { transform: scale(1.03); }
.content-wall-body { padding:24px; }
.content-wall-body h3 { margin-bottom: 8px; font-weight: 700; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border:1px solid rgba(163,230,53,0.1); border-radius:12px; 
  margin-bottom:10px; overflow:hidden; cursor:pointer; 
  transition: 0.3s;
  background: rgba(255,255,255,0.02);
}
.faq-item:hover { border-color: rgba(163,230,53,0.25); }
.faq-item .faq-question { 
  padding:18px 24px; font-weight:700; 
  display:flex; justify-content:space-between;
  font-size: 1rem;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: #a3e635;
  transition: 0.3s;
}
.faq-item.open .faq-question::after {
  content: '−';
}
.faq-item .faq-answer { 
  padding:0 24px 20px; display:none; 
  opacity:0.7; line-height: 1.6;
  color: #c0c0d0;
}
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { 
  padding:64px 24px; text-align:center; border-radius:16px; 
  background: linear-gradient(135deg, #1a1a2e 0%, #0a0a12 100%);
  border: 1px solid rgba(163,230,53,0.15);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -30%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(163,230,53,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.cta-banner h2 { 
  color:#f0f0f8; font-size: 2.2rem; margin-bottom: 12px;
}
.cta-banner p { color: #b0b0c0; margin-bottom: 24px; }
.cta-banner .btn-primary { background: #a3e635; color: #0a0a12; }

/* 页脚 */
.site-footer { 
  padding:64px 0 32px; 
  border-top: 1px solid rgba(163,230,53,0.08);
}
.footer-grid { 
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px;
}
.footer-brand { }
.footer-brand .logo { margin-bottom: 16px; }
.footer-col h4 { 
  font-size: 0.85rem; font-weight: 700; 
  margin-bottom: 16px; color: #a3e635;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer-col a { 
  display: block; padding: 4px 0; 
  text-decoration: none; color: #808090;
  font-size: 0.9rem;
  transition: 0.2s;
}
.footer-col a:hover { color: #a3e635; }
.footer-bottom { 
  border-top:1px solid rgba(163,230,53,0.08); 
  margin-top:48px; padding-top:24px; 
  text-align:center; font-size:0.85rem;
  color: #606070;
}

/* 工具类 */
.text-accent { color: #a3e635; }
.text-center { text-align:center; }
.seo-description { 
  max-width:600px; margin:0 auto 48px; 
  opacity:0.7; line-height: 1.7;
  color: #b0b0c0;
}
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.4rem; }
  .section-title { font-size: 1.8rem; }
  .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; }
  .main-nav.open { 
    display:flex; flex-direction:column; 
    position:absolute; top:72px; left:0; width:100%; 
    background: rgba(10,10,18,0.98); 
    padding:24px; gap: 16px;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(163,230,53,0.15);
  }
  .main-nav.open a { font-size: 1.1rem; padding: 8px 0; }
  .stat-number { font-size: 2rem; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .cards-grid,.content-wall,.stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .hero-buttons { flex-direction:column; }
  .btn { width: 100%; justify-content: center; }
  .section { padding: 60px 0; }
}