/* 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:#0a0a0f; 
  color:#e8e6e3;
  line-height:1.6;
}

/* 核心布局 — 必须居中 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#0f0f1a; }

/* 导航 — 固定顶部 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background:rgba(10,10,15,0.92); 
  backdrop-filter:blur(20px) saturate(1.4); 
  border-bottom:1px solid rgba(255,215,0,0.12); 
}
.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; 
  color:#f0e68c; letter-spacing:1px;
}
.logo-icon { 
  width:40px; height:40px; 
  background:linear-gradient(135deg, #f0e68c, #daa520); 
  border-radius:50%; display:flex; align-items:center; justify-content:center; 
  font-size:1rem; color:#0a0a0f; font-weight:900;
}
.main-nav { display:flex; align-items:center; gap:32px; list-style:none; }
.main-nav a { 
  text-decoration:none; font-size:0.85rem; font-weight:500; 
  color:#a0a0b0; letter-spacing:0.5px; 
  transition:0.3s; position:relative;
}
.main-nav a:hover { color:#f0e68c; }
.main-nav a::after {
  content:''; position:absolute; bottom:-4px; left:0; width:0; height:1.5px;
  background:#f0e68c; transition:0.3s;
}
.main-nav a:hover::after { width:100%; }
.nav-cta { 
  padding:10px 24px; border-radius:4px; 
  background:linear-gradient(135deg, #f0e68c, #daa520); 
  color:#0a0a0f!important; font-weight:700; 
  letter-spacing:0.5px; border:none;
}
.nav-cta:hover { transform:scale(1.03); box-shadow:0 4px 20px rgba(240,230,140,0.3); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; background:none; border:none; color:#f0e68c; font-size:1.5rem; cursor:pointer; }

/* 首页Hero */
.hero { 
  min-height:85vh; display:flex; align-items:center; 
  background:radial-gradient(ellipse at 30% 20%, rgba(240,230,140,0.06) 0%, transparent 60%);
  position:relative; overflow:hidden;
}
.hero::before {
  content:''; position:absolute; top:-30%; right:-10%; width:500px; height:500px;
  background:radial-gradient(circle, rgba(218,165,32,0.08), transparent 70%);
  pointer-events:none;
}
.hero-content { max-width:720px; position:relative; z-index:1; }
.hero-eyebrow { 
  display:inline-block; font-size:0.75rem; font-weight:700; 
  padding:6px 18px; border-radius:2px; margin-bottom:20px; 
  background:rgba(240,230,140,0.1); color:#f0e68c; 
  letter-spacing:3px; text-transform:uppercase; border-left:2px solid #daa520;
}
.hero h1 { 
  font-size:3.2rem; line-height:1.1; margin-bottom:24px; 
  font-weight:800; letter-spacing:-1px;
  background:linear-gradient(135deg, #f0e68c 0%, #daa520 50%, #e8e6e3 100%);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p { 
  font-size:1.1rem; opacity:0.6; max-width:560px; margin-bottom:36px; 
  color:#b0b0c0; line-height:1.7;
}
.hero-buttons { display:flex; gap:16px; }
.hero-image { 
  border-radius:4px; overflow:hidden; 
  border:1px solid rgba(240,230,140,0.15);
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
}
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 */
.btn { 
  display:inline-flex; align-items:center; gap:10px; 
  padding:14px 32px; border-radius:4px; font-weight:700; 
  cursor:pointer; border:none; text-decoration:none; 
  transition:0.3s; letter-spacing:0.5px; font-size:0.9rem;
}
.btn-primary { 
  background:linear-gradient(135deg, #f0e68c, #daa520); 
  color:#0a0a0f; 
}
.btn-primary:hover { 
  transform:translateY(-2px); 
  box-shadow:0 8px 30px rgba(240,230,140,0.25); 
}
.btn-outline { 
  background:transparent; border:1.5px solid rgba(240,230,140,0.3); 
  color:#f0e68c; 
}
.btn-outline:hover { 
  border-color:#f0e68c; background:rgba(240,230,140,0.05); 
  transform:translateY(-2px); 
}

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.7rem; font-weight:700; 
  letter-spacing:4px; margin-bottom:14px; 
  color:#daa520; text-transform:uppercase;
}
.section-title { 
  font-size:2.4rem; margin-bottom:16px; font-weight:800; 
  letter-spacing:-0.5px; line-height:1.2;
}
.section-desc { 
  max-width:600px; opacity:0.55; margin-bottom:44px; 
  color:#b0b0c0; line-height:1.7;
}

/* 卡片网格 */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; }
.category-card { 
  border-radius:4px; padding:32px; 
  border:1px solid rgba(240,230,140,0.1); 
  background:rgba(255,255,255,0.02);
  transition:0.4s; position:relative; overflow:hidden;
}
.category-card::before {
  content:''; position:absolute; top:0; left:0; width:3px; height:0;
  background:linear-gradient(180deg, #f0e68c, #daa520);
  transition:0.4s;
}
.category-card:hover { 
  transform:translateY(-4px); 
  border-color:rgba(240,230,140,0.2);
  box-shadow:0 12px 40px rgba(0,0,0,0.3);
  background:rgba(255,255,255,0.04);
}
.category-card:hover::before { height:100%; }
.card-icon { 
  width:50px; height:50px; border-radius:4px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:18px; font-size:1.4rem; 
  background:rgba(240,230,140,0.08); color:#f0e68c;
}
.category-card h3 { font-size:1.2rem; margin-bottom:10px; font-weight:600; }
.category-card p { opacity:0.5; font-size:0.9rem; margin-bottom:16px; color:#b0b0c0; }
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color:#f0e68c; display:inline-flex; align-items:center; gap:6px;
  transition:0.3s;
}
.card-link:hover { gap:12px; }

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.feature-image { 
  border-radius:4px; overflow:hidden; 
  border:1px solid rgba(240,230,140,0.1);
  box-shadow:0 15px 40px rgba(0,0,0,0.4);
}
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { }
.feature-text h3 { font-size:1.6rem; margin-bottom:12px; }
.feature-text p { opacity:0.55; margin-bottom:20px; color:#b0b0c0; }
.feature-list { list-style:none; }
.feature-list li { 
  padding:8px 0; display:flex; align-items:center; gap:10px; 
  color:#c0c0d0; font-size:0.95rem;
}
.feature-list li::before { 
  content:'✦'; font-weight:700; color:#f0e68c; 
  font-size:0.8rem; 
}

/* 数据条 */
.stats-bar { 
  display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; 
}
.stat-item { 
  padding:28px 20px; border-radius:4px; 
  border:1px solid rgba(240,230,140,0.08); 
  background:rgba(255,255,255,0.01);
  transition:0.3s;
}
.stat-item:hover { border-color:rgba(240,230,140,0.2); }
.stat-number { 
  font-size:2.6rem; font-weight:800; 
  background:linear-gradient(135deg, #f0e68c, #daa520);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text; line-height:1.2;
}
.stat-label { font-size:0.85rem; opacity:0.5; margin-top:8px; color:#b0b0c0; letter-spacing:1px; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px; }
.content-wall-item { 
  border-radius:4px; overflow:hidden; 
  border:1px solid rgba(240,230,140,0.08); 
  background:rgba(255,255,255,0.01);
  transition:0.4s; 
}
.content-wall-item:hover { 
  transform:translateY(-4px); 
  border-color:rgba(240,230,140,0.2);
  box-shadow:0 12px 40px rgba(0,0,0,0.3);
}
.content-wall-item img { width:100%; height:200px; object-fit:cover; display:block; }
.content-wall-body { padding:24px; }
.content-wall-body h4 { font-size:1.1rem; margin-bottom:8px; font-weight:600; }
.content-wall-body p { opacity:0.5; font-size:0.85rem; color:#b0b0c0; }
.content-wall-body .card-link { margin-top:12px; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border:1px solid rgba(240,230,140,0.08); 
  border-radius:4px; margin-bottom:10px; 
  overflow:hidden; cursor:pointer; 
  background:rgba(255,255,255,0.01);
  transition:0.3s;
}
.faq-item:hover { border-color:rgba(240,230,140,0.15); }
.faq-item .faq-question { 
  padding:18px 24px; font-weight:600; 
  display:flex; justify-content:space-between; 
  color:#e0d8c0; font-size:1rem;
}
.faq-item .faq-question::after {
  content:'+'; font-size:1.2rem; color:#f0e68c; transition:0.3s;
}
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { 
  padding:0 24px 18px; display:none; 
  opacity:0.6; color:#b0b0c0; line-height:1.7;
}
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { 
  padding:64px 24px; text-align:center; border-radius:4px; 
  background:linear-gradient(135deg, rgba(240,230,140,0.08), rgba(218,165,32,0.04));
  border:1px solid rgba(240,230,140,0.12);
  position:relative; overflow:hidden;
}
.cta-banner::before {
  content:''; position:absolute; top:-50%; left:-20%; width:140%; height:200%;
  background:radial-gradient(ellipse, rgba(240,230,140,0.03), transparent 70%);
  pointer-events:none;
}
.cta-banner h2 { 
  color:#f0e68c; font-size:2rem; margin-bottom:12px; 
  position:relative; z-index:1;
}
.cta-banner p { 
  color:#b0b0c0; opacity:0.6; margin-bottom:28px; 
  position:relative; z-index:1; max-width:500px; margin-left:auto; margin-right:auto;
}
.cta-banner .btn-primary { 
  background:#0a0a0f; color:#f0e68c; 
  border:1px solid rgba(240,230,140,0.2);
}
.cta-banner .btn-primary:hover { 
  background:#1a1a2a; 
  box-shadow:0 8px 30px rgba(240,230,140,0.1);
}

/* 页脚 */
.site-footer { 
  padding:64px 0 32px; 
  border-top:1px solid rgba(240,230,140,0.06);
}
.footer-grid { 
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; 
}
.footer-brand { }
.footer-brand .logo { margin-bottom:16px; }
.footer-brand p { opacity:0.4; font-size:0.85rem; max-width:300px; color:#a0a0b0; }
.footer-col h5 { 
  font-size:0.8rem; font-weight:700; margin-bottom:18px; 
  color:#f0e68c; letter-spacing:2px; text-transform:uppercase;
}
.footer-col ul { list-style:none; }
.footer-col li { margin-bottom:10px; }
.footer-col a { 
  text-decoration:none; color:#a0a0b0; font-size:0.85rem; 
  transition:0.3s; opacity:0.7;
}
.footer-col a:hover { color:#f0e68c; opacity:1; }
.footer-bottom { 
  border-top:1px solid rgba(240,230,140,0.06); 
  margin-top:40px; padding-top:24px; 
  text-align:center; font-size:0.8rem; 
  color:#707080; letter-spacing:0.5px;
}

/* 工具类 */
.text-accent { color:#f0e68c; }
.text-center { text-align:center; }
.seo-description { 
  max-width:600px; margin:0 auto 48px; 
  opacity:0.5; color:#b0b0c0; 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:40px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
  .main-nav { 
    display:none; 
    position:absolute; top:72px; left:0; width:100%; 
    background:rgba(10,10,15,0.98); 
    backdrop-filter:blur(20px);
    padding:24px; flex-direction:column; gap:20px;
    border-bottom:1px solid rgba(240,230,140,0.1);
  }
  .menu-toggle { display:flex; }
  .main-nav.open { display:flex; }
  .hero h1 { font-size:2.4rem; }
  .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; }
  .hero h1 { font-size:2rem; }
  .section-title { font-size:1.5rem; }
  .stat-number { font-size:2rem; }
}