*, *::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: #e8e6f0;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 80px 0; position: relative; }

.section:nth-child(even) { background: #12121a; }

/* 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(12px);
  border-bottom: 1px solid rgba(255, 215, 0, 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: 10px;
  font-weight: 700;
  font-size: 1.3rem;
  text-decoration: none;
  color: #ffd700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, #ffd700, #ff6b35);
  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: #a8a4b8;
  transition: 0.3s;
  position: relative;
  letter-spacing: 1px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #ffd700;
  transition: 0.3s;
}

.main-nav a:hover { color: #ffd700; }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
  padding: 10px 24px;
  border-radius: 30px;
  color: #0a0a0f !important;
  font-weight: 700;
  background: linear-gradient(135deg, #ffd700, #ff6b35);
  transition: 0.3s;
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

.nav-cta:hover { transform: scale(1.05); box-shadow: 0 0 30px rgba(255, 215, 0, 0.5); color: #0a0a0f !important; }
.nav-cta::after { display: none; }

.menu-toggle { display: none; cursor: pointer; color: #ffd700; font-size: 1.5rem; }

/* 首页Hero */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: scale(1) translate(0, 0); opacity: 0.6; }
  100% { transform: scale(1.3) translate(-30px, 30px); opacity: 1; }
}

.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: 30px;
  margin-bottom: 20px;
  background: rgba(255, 215, 0, 0.12);
  color: #ffd700;
  letter-spacing: 3px;
  text-transform: uppercase;
  border: 1px solid rgba(255, 215, 0, 0.2);
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  color: #ffffff;
  font-weight: 800;
  letter-spacing: -1px;
}

.hero h1 span { color: #ffd700; }

.hero p {
  font-size: 1.1rem;
  opacity: 0.6;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
  color: #b8b4c8;
}

.hero-buttons { display: flex; gap: 16px; }

.hero-image {
  border-radius: 16px;
  overflow: hidden;
  position: absolute;
  right: -80px;
  top: 50%;
  transform: translateY(-50%);
  width: 420px;
  height: 300px;
  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: 100%; object-fit: cover; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: 0.3s;
  font-size: 0.9rem;
  letter-spacing: 1px;
}

.btn-primary {
  color: #0a0a0f;
  background: linear-gradient(135deg, #ffd700, #ff6b35);
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5); }

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(255, 215, 0, 0.4);
  color: #ffd700;
}

.btn-outline:hover { background: rgba(255, 215, 0, 0.08); border-color: #ffd700; }

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 12px;
  color: #ffd700;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.4rem;
  margin-bottom: 14px;
  color: #ffffff;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.section-desc {
  max-width: 600px;
  opacity: 0.6;
  margin-bottom: 40px;
  line-height: 1.8;
  color: #b8b4c8;
}

/* 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: #14141e;
  border: 1px solid rgba(255, 215, 0, 0.08);
  transition: 0.3s;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #ffd700, #ff6b35);
  transform: scaleX(0);
  transform-origin: left;
  transition: 0.4s;
}

.category-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(255, 215, 0, 0.1); border-color: rgba(255, 215, 0, 0.2); }
.category-card:hover::before { transform: scaleX(1); }

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
  background: rgba(255, 215, 0, 0.1);
  color: #ffd700;
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: #ffd700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: 0.3s;
}

.card-link:hover { gap: 12px; }

.category-card h3 { font-size: 1.2rem; margin-bottom: 8px; color: #fff; }
.category-card p { font-size: 0.9rem; opacity: 0.5; margin-bottom: 16px; line-height: 1.6; }

/* 特性块 */
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }

.feature-image {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 215, 0, 0.1);
  box-shadow: 0 10px 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: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: #c8c4d8;
}

.feature-list li::before {
  content: '◆';
  font-weight: 700;
  color: #ffd700;
  font-size: 0.6rem;
}

/* 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: #14141e;
  border: 1px solid rgba(255, 215, 0, 0.08);
  transition: 0.3s;
}

.stat-item:hover { border-color: rgba(255, 215, 0, 0.2); transform: translateY(-3px); }

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  color: #ffd700;
  line-height: 1;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.5;
  margin-top: 8px;
  color: #a8a4b8;
  letter-spacing: 1px;
}

/* 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: #14141e;
  border: 1px solid rgba(255, 215, 0, 0.08);
  transition: 0.3s;
}

.content-wall-item:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(255, 215, 0, 0.1); border-color: rgba(255, 215, 0, 0.2); }

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: 0.4s;
}

.content-wall-item:hover img { transform: scale(1.05); }

.content-wall-body { padding: 24px; }

.content-wall-body h4 { color: #fff; font-size: 1.1rem; margin-bottom: 8px; }
.content-wall-body p { font-size: 0.85rem; opacity: 0.5; line-height: 1.6; }
.content-wall-body .card-link { margin-top: 12px; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  border: 1px solid rgba(255, 215, 0, 0.08);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #14141e;
  transition: 0.3s;
}

.faq-item:hover { border-color: rgba(255, 215, 0, 0.2); }

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 1rem;
  transition: 0.3s;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: #ffd700;
  transition: 0.3s;
}

.faq-item.open .faq-question::after { content: '−'; }

.faq-item .faq-answer {
  padding: 0 24px 18px;
  display: none;
  opacity: 0.6;
  line-height: 1.7;
  color: #b8b4c8;
}

.faq-item.open .faq-answer { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 0.6; transform: translateY(0); }
}

/* CTA横幅 */
.cta-banner {
  padding: 64px 24px;
  text-align: center;
  border-radius: 20px;
  background: linear-gradient(135deg, #ffd700, #ff6b35);
  color: #0a0a0f;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: ctaPulse 6s ease-in-out infinite;
}

@keyframes ctaPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.cta-banner h2 { color: #0a0a0f; font-size: 2rem; position: relative; z-index: 1; }
.cta-banner p { color: rgba(10, 10, 15, 0.7); max-width: 500px; margin: 12px auto 24px; position: relative; z-index: 1; }
.cta-banner .btn-primary { background: #0a0a0f; color: #ffd700; box-shadow: 0 4px 20px rgba(0,0,0,0.2); position: relative; z-index: 1; }
.cta-banner .btn-primary:hover { background: #1a1a2a; }

/* 页脚 */
.site-footer {
  padding: 64px 0 28px;
  background: #0a0a0f;
  border-top: 1px solid rgba(255, 215, 0, 0.08);
}

.site-footer .container { }

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }

.footer-brand { }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.85rem; opacity: 0.5; line-height: 1.7; max-width: 280px; }

.footer-col { }
.footer-col h5 { color: #ffd700; font-size: 0.85rem; margin-bottom: 16px; letter-spacing: 2px; text-transform: uppercase; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { text-decoration: none; color: #a8a4b8; font-size: 0.85rem; transition: 0.3s; }
.footer-col ul a:hover { color: #ffd700; }

.footer-bottom {
  border-top: 1px solid rgba(255, 215, 0, 0.08);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(168, 164, 184, 0.4);
  letter-spacing: 1px;
}

/* 工具类 */
.text-accent { color: #ffd700; }
.text-center { text-align: center; }
.seo-description { max-width: 600px; margin: 0 auto 48px; opacity: 0.5; color: #b8b4c8; line-height: 1.8; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ⚠️ 响应式 */
@media (max-width: 1024px) {
  .hero-image { display: none; }
  .hero h1 { font-size: 2.6rem; }
}

@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: 68px;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.98);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(255, 215, 0, 0.15);
  }
  .hero h1 { font-size: 2.2rem; }
  .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: 1.8rem; }
  .section { padding: 48px 0; }
  .stat-number { font-size: 2rem; }
}