/* 币市交易平台 - 独特视觉系统 */
/* 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:#0b0d14; color:#e8e6e3; }

/* 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:#0f1119; }

/* 导航 — 固定顶部 */
.site-header { position:fixed; top:0; left:0; width:100%; z-index:1000; background:rgba(11,13,20,0.92); backdrop-filter:blur(16px); border-bottom:1px solid rgba(255,200,50,0.15); }
.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:8px; font-weight:700; font-size:1.2rem; text-decoration:none; color:#f5c542; letter-spacing:1px; }
.logo-icon { width:36px; height:36px; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:1rem; background:linear-gradient(135deg,#f5c542,#d4a017); color:#0b0d14; font-weight:900; }
.main-nav { display:flex; align-items:center; gap:24px; list-style:none; }
.main-nav a { text-decoration:none; font-size:0.9rem; font-weight:500; transition:0.2s; color:#b0aeab; letter-spacing:0.5px; }
.main-nav a:hover { color:#f5c542; }
.nav-cta { padding:8px 20px; border-radius:30px; color:#0b0d14!important; font-weight:600; background:linear-gradient(135deg,#f5c542,#d4a017); }
.nav-cta:hover { background:#e6b83a!important; color:#0b0d14!important; }
.menu-toggle { display:none; background:none; border:none; color:#e8e6e3; font-size:1.5rem; cursor:pointer; }

/* 首页Hero */
.hero { min-height:75vh; display:flex; align-items:center; position:relative; overflow:hidden; }
.hero::before { content:''; position:absolute; top:-30%; right:-10%; width:600px; height:600px; background:radial-gradient(circle,rgba(245,197,66,0.08) 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:600; padding:6px 18px; border-radius:30px; margin-bottom:16px; background:rgba(245,197,66,0.12); color:#f5c542; letter-spacing:1.5px; }
.hero h1 { font-size:3.2rem; line-height:1.15; margin-bottom:20px; font-weight:800; letter-spacing:-1px; background:linear-gradient(135deg,#e8e6e3 40%,#f5c542 70%); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.hero p { font-size:1.1rem; opacity:0.65; max-width:560px; margin-bottom:32px; line-height:1.7; color:#c0bdb8; }
.hero-buttons { display:flex; gap:14px; }
.hero-image { border-radius:20px; overflow:hidden; position:relative; }
.hero-image img { width:100%; height:auto; border-radius:20px; }

/* 按钮 */
.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:0.3s; font-size:0.95rem; letter-spacing:0.5px; }
.btn-primary { color:#0b0d14; background:linear-gradient(135deg,#f5c542,#d4a017); box-shadow:0 4px 20px rgba(245,197,66,0.25); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 28px rgba(245,197,66,0.35); }
.btn-outline { background:transparent; border:1.5px solid rgba(245,197,66,0.4); color:#f5c542; }
.btn-outline:hover { border-color:#f5c542; background:rgba(245,197,66,0.08); }

/* 标签/标题 */
.section-label { display:inline-block; font-size:0.75rem; font-weight:600; letter-spacing:3px; margin-bottom:12px; color:#f5c542; text-transform:uppercase; }
.section-title { font-size:2.2rem; margin-bottom:14px; font-weight:700; letter-spacing:-0.5px; }
.section-desc { max-width:600px; opacity:0.6; margin-bottom:40px; line-height:1.7; color:#b0aeab; }

/* 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; border:1px solid rgba(255,255,255,0.06); background:rgba(255,255,255,0.02); transition:0.3s; backdrop-filter:blur(4px); }
.category-card:hover { transform:translateY(-4px); border-color:rgba(245,197,66,0.15); box-shadow:0 8px 32px rgba(0,0,0,0.3); background:rgba(245,197,66,0.03); }
.card-icon { width:52px; height:52px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin-bottom:16px; font-size:1.5rem; background:rgba(245,197,66,0.1); color:#f5c542; }
.category-card h3 { font-size:1.15rem; margin-bottom:8px; color:#e8e6e3; }
.category-card p { font-size:0.9rem; opacity:0.55; margin-bottom:16px; line-height:1.6; }
.card-link { font-weight:600; font-size:0.85rem; text-decoration:none; color:#f5c542; display:inline-flex; align-items:center; gap:6px; }
.card-link:hover { gap:10px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.feature-image { border-radius:16px; overflow:hidden; border:1px solid rgba(255,255,255,0.06); }
.feature-image img { width:100%; height:auto; transition:0.4s; }
.feature-image:hover img { transform:scale(1.02); }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { padding:8px 0; display:flex; align-items:center; gap:10px; color:#c0bdb8; font-size:0.95rem; }
.feature-list li::before { content:'✦'; font-weight:700; color:#f5c542; }

/* 数据条 */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item { padding:28px 16px; border-radius:16px; border:1px solid rgba(255,255,255,0.06); background:rgba(255,255,255,0.02); }
.stat-number { font-size:2.4rem; font-weight:800; background:linear-gradient(135deg,#f5c542,#e8b830); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.stat-label { font-size:0.9rem; opacity:0.5; margin-top:6px; letter-spacing:0.5px; }

/* 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; border:1px solid rgba(255,255,255,0.06); background:rgba(255,255,255,0.02); transition:0.3s; }
.content-wall-item:hover { transform:translateY(-4px); border-color:rgba(245,197,66,0.12); box-shadow:0 8px 28px rgba(0,0,0,0.25); }
.content-wall-item img { width:100%; height:200px; object-fit:cover; transition:0.4s; }
.content-wall-item:hover img { transform:scale(1.03); }
.content-wall-body { padding:20px; }
.content-wall-body h4 { font-size:1.05rem; margin-bottom:6px; }
.content-wall-body p { font-size:0.85rem; opacity:0.5; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { border:1px solid rgba(255,255,255,0.06); border-radius:12px; margin-bottom:8px; overflow:hidden; cursor:pointer; background:rgba(255,255,255,0.02); transition:0.2s; }
.faq-item:hover { border-color:rgba(245,197,66,0.15); }
.faq-item .faq-question { padding:18px 22px; font-weight:600; display:flex; justify-content:space-between; align-items:center; color:#e8e6e3; }
.faq-item .faq-question::after { content:'+'; font-size:1.2rem; color:#f5c542; transition:0.3s; }
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { padding:0 22px 18px; display:none; opacity:0.6; line-height:1.7; color:#b0aeab; }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { padding:64px 24px; text-align:center; border-radius:20px; background:linear-gradient(135deg,#1a1d2e 0%,#0f1119 100%); border:1px solid rgba(245,197,66,0.1); position:relative; overflow:hidden; }
.cta-banner::before { content:''; position:absolute; top:-50%; left:50%; width:400px; height:400px; background:radial-gradient(circle,rgba(245,197,66,0.06) 0%,transparent 70%); transform:translate(-50%,-50%); pointer-events:none; }
.cta-banner h2 { color:#e8e6e3; font-size:2rem; margin-bottom:12px; }
.cta-banner p { color:#b0aeab; margin-bottom:28px; }
.cta-banner .btn-primary { background:#f5c542; color:#0b0d14; }

/* 页脚 */
.site-footer { padding:56px 0 28px; border-top:1px solid rgba(255,255,255,0.05); }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-brand p { opacity:0.4; font-size:0.85rem; margin-top:12px; line-height:1.7; }
.footer-col { }
.footer-col h5 { color:#f5c542; margin-bottom:16px; font-size:0.9rem; letter-spacing:1px; }
.footer-col a { display:block; color:#b0aeab; text-decoration:none; font-size:0.85rem; padding:4px 0; transition:0.2s; }
.footer-col a:hover { color:#f5c542; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.05); margin-top:40px; padding-top:20px; text-align:center; font-size:0.85rem; color:#666; }

/* 工具类 */
.text-accent { color:#f5c542; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.5; line-height:1.7; }
.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; align-items:center; }
  .main-nav.open { display:flex; flex-direction:column; position:absolute; top:68px; left:0; width:100%; background:#0b0d14; padding:24px; gap:16px; border-bottom:1px solid rgba(245,197,66,0.1); }
  .hero h1 { font-size:2.2rem; }
  .hero { min-height:60vh; }
  .section-title { font-size:1.6rem; }
}
@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; }
}