/* 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: #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:100px 0; position: relative; }
.section:nth-child(even) { background: #12121c; }

/* 导航 — 固定顶部 */
.site-header { 
  position:fixed; 
  top:0; 
  left:0; 
  width:100%; 
  z-index:1000; 
  background: rgba(10,10,18,0.92); 
  backdrop-filter:blur(20px) saturate(1.4); 
  border-bottom: 1px solid rgba(255,215,0,0.08);
}
.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: #ffd700;
  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, #ffd700, #ff8c00);
  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:0.85rem; 
  font-weight:500; 
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94); 
  color: rgba(232,230,227,0.7);
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #ffd700;
  transition: width 0.3s ease;
}
.main-nav a:hover { color: #ffd700; }
.main-nav a:hover::after { width: 100%; }
.nav-cta { 
  padding:10px 24px; 
  border-radius: 50px; 
  color:#0a0a12!important; 
  font-weight:700; 
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  border: none;
  letter-spacing: 0.3px;
  transition: all 0.3s ease!important;
}
.nav-cta::after { display: none!important; }
.nav-cta:hover { 
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255,215,0,0.3);
  color:#0a0a12!important;
}
.menu-toggle { display:none; background: none; border: none; color: #ffd700; font-size: 1.5rem; cursor: pointer; padding: 8px; }

/* 首页Hero */
.hero { 
  min-height: 85vh; 
  display:flex; 
  align-items:center; 
  position: relative;
  background: radial-gradient(ellipse at 20% 50%, rgba(255,215,0,0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(255,140,0,0.04) 0%, transparent 50%),
              linear-gradient(180deg, #0a0a12 0%, #12121c 100%);
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffd700' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  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:50px; 
  margin-bottom:20px; 
  background: rgba(255,215,0,0.1);
  color: #ffd700;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid rgba(255,215,0,0.2);
  backdrop-filter: blur(4px);
}
.hero h1 { 
  font-size:3.2rem; 
  line-height:1.1; 
  margin-bottom:24px; 
  font-weight: 900;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, #ffd700 0%, #ff8c00 50%, #ffd700 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { 
  font-size:1.15rem; 
  opacity:0.6; 
  max-width:560px; 
  margin-bottom:36px; 
  line-height: 1.7;
  color: rgba(232,230,227,0.7);
}
.hero-buttons { display:flex; gap:16px; }
.hero-image { 
  border-radius:20px; 
  overflow:hidden; 
  position: relative;
  border: 1px solid rgba(255,215,0,0.1);
  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:50px; 
  font-weight:700; 
  cursor:pointer; 
  border:none; 
  text-decoration:none; 
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94); 
  font-size: 0.9rem;
  letter-spacing: 0.3px;
}
.btn-primary { 
  color:#0a0a12; 
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  box-shadow: 0 4px 20px rgba(255,215,0,0.2);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 35px rgba(255,215,0,0.35);
}
.btn-outline { 
  background:transparent; 
  border:1.5px solid rgba(255,215,0,0.3); 
  color: #ffd700;
}
.btn-outline:hover {
  border-color: #ffd700;
  background: rgba(255,215,0,0.05);
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label { 
  display:inline-block; 
  font-size:0.7rem; 
  font-weight:700; 
  letter-spacing:3px; 
  margin-bottom:16px; 
  color: #ffd700;
  text-transform: uppercase;
  position: relative;
  padding-left: 40px;
}
.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 28px;
  height: 1.5px;
  background: #ffd700;
}
.section-title { 
  font-size:2.4rem; 
  margin-bottom:16px; 
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.15;
}
.section-desc { 
  max-width:600px; 
  opacity:0.6; 
  margin-bottom:48px; 
  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:20px; 
  padding:32px; 
  border: 1px solid rgba(255,215,0,0.06); 
  background: rgba(255,255,255,0.02);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94); 
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255,215,0,0.03) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.category-card:hover { 
  transform:translateY(-6px); 
  box-shadow:0 12px 40px rgba(0,0,0,0.3); 
  border-color: rgba(255,215,0,0.15);
}
.category-card:hover::before { opacity: 1; }
.card-icon { 
  width:52px; 
  height:52px; 
  border-radius:16px; 
  display:flex; 
  align-items:center; 
  justify-content:center; 
  margin-bottom:20px; 
  font-size:1.4rem; 
  background: rgba(255,215,0,0.08);
  color: #ffd700;
  position: relative;
  z-index: 1;
}
.category-card h3 { font-size: 1.15rem; margin-bottom: 10px; position: relative; z-index: 1; }
.category-card p { opacity: 0.5; font-size: 0.9rem; margin-bottom: 20px; position: relative; z-index: 1; }
.card-link { 
  font-weight:700; 
  font-size:0.8rem; 
  text-decoration:none; 
  color: #ffd700;
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card-link::after {
  content: '→';
  transition: transform 0.3s ease;
}
.card-link:hover::after {
  transform: translateX(4px);
}

/* 特性块 */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.feature-image { 
  border-radius:20px; 
  overflow:hidden; 
  border: 1px solid rgba(255,215,0,0.08);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.feature-image img { width:100%; height:auto; display: block; }
.feature-text { }
.feature-text .section-title { margin-bottom: 20px; }
.feature-list { list-style:none; margin-top: 24px; }
.feature-list li { 
  padding:10px 0; 
  display:flex; 
  align-items:center; 
  gap:12px; 
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.feature-list li::before { 
  content:'✦'; 
  font-weight:700; 
  color: #ffd700;
  font-size: 0.8rem;
}

/* 数据条 */
.stats-bar { 
  display:grid; 
  grid-template-columns:repeat(4,1fr); 
  gap:28px; 
  text-align:center; 
  position: relative;
}
.stat-item { 
  padding:32px 24px; 
  border-radius:20px; 
  border: 1px solid rgba(255,215,0,0.06); 
  background: rgba(255,255,255,0.02);
  transition: all 0.3s ease;
}
.stat-item:hover {
  border-color: rgba(255,215,0,0.15);
  transform: translateY(-4px);
}
.stat-number { 
  font-size:2.6rem; 
  font-weight:900; 
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
  line-height: 1;
}
.stat-label { 
  font-size:0.85rem; 
  opacity:0.5; 
  margin-top:8px; 
  letter-spacing: 0.5px;
}

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px; }
.content-wall-item { 
  border-radius:20px; 
  overflow:hidden; 
  border: 1px solid rgba(255,215,0,0.06); 
  background: rgba(255,255,255,0.02);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94); 
}
.content-wall-item:hover { 
  transform:translateY(-6px); 
  box-shadow:0 12px 40px rgba(0,0,0,0.3); 
  border-color: rgba(255,215,0,0.15);
}
.content-wall-item img { 
  width:100%; 
  height:220px; 
  object-fit:cover; 
  transition: transform 0.6s ease;
}
.content-wall-item:hover img { transform: scale(1.05); }
.content-wall-body { padding:24px; }
.content-wall-body h4 { font-size: 1.05rem; margin-bottom: 8px; }
.content-wall-body p { opacity: 0.5; font-size: 0.85rem; line-height: 1.6; }
.content-wall-body .card-link { margin-top: 16px; display: inline-block; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border: 1px solid rgba(255,215,0,0.06); 
  border-radius:16px; 
  margin-bottom:10px; 
  overflow:hidden; 
  cursor:pointer; 
  background: rgba(255,255,255,0.02);
  transition: all 0.3s ease;
}
.faq-item:hover { border-color: rgba(255,215,0,0.12); }
.faq-item .faq-question { 
  padding:20px 24px; 
  font-weight:700; 
  display:flex; 
  justify-content:space-between; 
  align-items: center;
  font-size: 0.95rem;
  letter-spacing: 0.2px;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: #ffd700;
  transition: transform 0.3s ease;
}
.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}
.faq-item .faq-answer { 
  padding:0 24px 20px; 
  display:none; 
  opacity:0.6; 
  line-height: 1.7;
  font-size: 0.9rem;
}
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { 
  padding:64px 24px; 
  text-align:center; 
  border-radius:24px; 
  color:#0a0a12; 
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: ctaGlow 8s ease-in-out infinite alternate;
}
@keyframes ctaGlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-20%, -20%); }
}
.cta-banner h2 { color:#0a0a12; font-size: 2rem; position: relative; z-index: 1; }
.cta-banner p { color: rgba(10,10,18,0.7); margin-bottom: 28px; position: relative; z-index: 1; }
.cta-banner .btn-primary { 
  background:#0a0a12; 
  color: #ffd700;
  box-shadow: none;
  position: relative;
  z-index: 1;
}
.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(10,10,18,0.3);
}

/* 页脚 */
.site-footer { 
  padding:64px 0 32px; 
  border-top: 1px solid rgba(255,215,0,0.06);
  background: #0a0a12;
}
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
.footer-brand { }
.footer-brand .logo { margin-bottom: 16px; display: inline-flex; }
.footer-brand p { opacity: 0.4; font-size: 0.85rem; line-height: 1.7; max-width: 280px; }
.footer-col { }
.footer-col h5 { 
  font-size: 0.8rem; 
  font-weight:700; 
  margin-bottom: 20px; 
  letter-spacing: 1px; 
  text-transform: uppercase;
  color: rgba(255,215,0,0.5);
}
.footer-col a { 
  display: block; 
  color: rgba(232,230,227,0.5); 
  text-decoration: none; 
  font-size: 0.85rem; 
  padding: 6px 0;
  transition: color 0.3s ease;
}
.footer-col a:hover { color: #ffd700; }
.footer-bottom { 
  border-top:1px solid rgba(255,215,0,0.06); 
  margin-top:48px; 
  padding-top:24px; 
  text-align:center; 
  font-size:0.8rem; 
  opacity: 0.4;
  letter-spacing: 0.3px;
}

/* 工具类 */
.text-accent { color: #ffd700; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.6; line-height: 1.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ⚠️ 响应式 */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.6rem; }
  .section-title { font-size: 2rem; }
  .stats-bar { gap: 20px; }
  .stat-number { font-size: 2.2rem; }
}

@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; }
  .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(255,215,0,0.08);
  }
  .main-nav.open a { padding: 10px 0; font-size: 1rem; }
  .hero { min-height: 70vh; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-buttons { flex-direction: column; gap: 12px; }
  .cta-banner h2 { font-size: 1.5rem; }
  .content-wall { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .cards-grid,.content-wall,.stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap: 24px; }
  .hero-buttons { flex-direction:column; }
  .section { padding: 60px 0; }
  .hero h1 { font-size: 1.7rem; }
  .section-title { font-size: 1.6rem; }
  .stat-number { font-size: 2rem; }
  .cta-banner { padding: 40px 20px; }
}