*, *::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: #0a0b0f;
  color: #e8e6e3;
  font-weight: 350;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

::selection { background: #f7a600; color: #0a0b0f; }

/* 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: #11131a; }

/* 导航 — 半透明琥珀色玻璃 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 11, 15, 0.88);
  backdrop-filter: blur(18px) saturate(1.1);
  border-bottom: 1px solid rgba(247, 166, 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: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: #e8e6e3;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(145deg, #f7a600, #d48b00);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #0a0b0f;
  box-shadow: 0 0 20px rgba(247, 166, 0, 0.25);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 450;
  color: rgba(232, 230, 227, 0.7);
  transition: 0.3s ease;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #f7a600;
  transition: 0.3s ease;
}

.main-nav a:hover { color: #f7a600; }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
  padding: 10px 24px;
  border-radius: 50px;
  background: linear-gradient(135deg, #f7a600, #d48b00);
  color: #0a0b0f !important;
  font-weight: 700;
  box-shadow: 0 0 24px rgba(247, 166, 0, 0.2);
  transition: 0.3s ease;
}

.nav-cta:hover { transform: scale(1.04); box-shadow: 0 0 32px rgba(247, 166, 0, 0.35); color: #0a0b0f !important; }
.nav-cta::after { display: none !important; }

.menu-toggle { display: none; background: none; border: none; color: #e8e6e3; font-size: 1.6rem; cursor: pointer; }

/* 首页Hero — 野兽派斜切+辉光 */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  background: #0a0b0f;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(247, 166, 0, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  padding: 6px 18px;
  border-radius: 50px;
  background: rgba(247, 166, 0, 0.12);
  color: #f7a600;
  margin-bottom: 20px;
  text-transform: uppercase;
  border: 1px solid rgba(247, 166, 0, 0.15);
}

.hero h1 {
  font-size: 3.6rem;
  line-height: 1.1;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #e8e6e3 40%, #f7a600 80%);
  -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;
  color: rgba(232, 230, 227, 0.7);
  line-height: 1.7;
}

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

.hero-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  border: 1px solid rgba(247, 166, 0, 0.08);
}

.hero-image img { width: 100%; height: auto; display: block; }

/* 按钮 — 琥珀黑金风格 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, #f7a600, #d48b00);
  color: #0a0b0f;
  box-shadow: 0 0 30px rgba(247, 166, 0, 0.15);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 40px rgba(247, 166, 0, 0.3);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(247, 166, 0, 0.3);
  color: #e8e6e3;
}

.btn-outline:hover {
  border-color: #f7a600;
  background: rgba(247, 166, 0, 0.06);
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #f7a600;
  margin-bottom: 14px;
  position: relative;
  padding-left: 32px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 20px;
  height: 2px;
  background: #f7a600;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  color: #e8e6e3;
}

.section-desc {
  max-width: 600px;
  opacity: 0.55;
  margin-bottom: 48px;
  font-size: 1.05rem;
  color: rgba(232, 230, 227, 0.7);
}

/* 卡片网格 — 深色玻璃态 */
.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(255, 255, 255, 0.06);
  backdrop-filter: blur(4px);
  transition: 0.4s cubic-bezier(0.2, 0.9, 0.4, 1);
}

.category-card:hover {
  transform: translateY(-6px);
  background: rgba(247, 166, 0, 0.04);
  border-color: rgba(247, 166, 0, 0.15);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(247, 166, 0, 0.12), rgba(247, 166, 0, 0.04));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  color: #f7a600;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #f7a600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: 0.2s;
}

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

/* 特性块 — 不对称布局 */
.feature-block {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
  border: 1px solid rgba(247, 166, 0, 0.06);
}

.feature-image img { width: 100%; height: auto; display: block; }

.feature-list {
  list-style: none;
  margin-top: 20px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: rgba(232, 230, 227, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.feature-list li::before {
  content: '⟡';
  font-weight: 700;
  color: #f7a600;
  font-size: 1.2rem;
}

/* 数据条 — 大号粗野数字 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 32px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  transition: 0.3s;
}

.stat-item:hover {
  background: rgba(247, 166, 0, 0.04);
  border-color: rgba(247, 166, 0, 0.1);
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: #f7a600;
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.5;
  margin-top: 8px;
  color: rgba(232, 230, 227, 0.6);
  text-transform: uppercase;
  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: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  transition: 0.4s cubic-bezier(0.2, 0.9, 0.4, 1);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  border-color: rgba(247, 166, 0, 0.12);
  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 h3 { font-size: 1.1rem; margin-bottom: 8px; color: #e8e6e3; }
.content-wall-body p { font-size: 0.9rem; opacity: 0.5; }

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

.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.02);
  transition: 0.3s;
}

.faq-item:hover { border-color: rgba(247, 166, 0, 0.1); }

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #e8e6e3;
  font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: #f7a600;
  transition: 0.3s;
}

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

.faq-item .faq-answer {
  padding: 0 24px 18px;
  display: none;
  opacity: 0.6;
  color: rgba(232, 230, 227, 0.7);
  line-height: 1.7;
}

.faq-item.open .faq-answer { display: block; }

/* CTA横幅 */
.cta-banner {
  padding: 72px 24px;
  text-align: center;
  border-radius: 20px;
  background: linear-gradient(145deg, #1a1c26, #0a0b0f);
  border: 1px solid rgba(247, 166, 0, 0.08);
  color: #e8e6e3;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(247, 166, 0, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner h2 { font-size: 2rem; margin-bottom: 16px; color: #e8e6e3; }
.cta-banner p { opacity: 0.5; margin-bottom: 28px; }

.cta-banner .btn-primary {
  background: #f7a600;
  color: #0a0b0f;
  box-shadow: 0 0 40px rgba(247, 166, 0, 0.15);
}

.cta-banner .btn-primary:hover { box-shadow: 0 0 60px rgba(247, 166, 0, 0.25); }

/* 页脚 */
.site-footer {
  padding: 64px 0 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  background: #0a0b0f;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p { opacity: 0.4; font-size: 0.9rem; margin-top: 12px; }

.footer-col h4 { font-size: 0.85rem; font-weight: 700; margin-bottom: 16px; color: #e8e6e3; text-transform: uppercase; letter-spacing: 1px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: rgba(232, 230, 227, 0.45); text-decoration: none; font-size: 0.9rem; transition: 0.2s; }
.footer-col ul li a:hover { color: #f7a600; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(232, 230, 227, 0.3);
}

/* 工具类 */
.text-accent { color: #f7a600; }
.text-center { text-align: center; }

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.5;
  color: rgba(232, 230, 227, 0.6);
}

.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; 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, 11, 15, 0.98);
    backdrop-filter: blur(18px);
    padding: 24px 32px;
    gap: 16px;
    border-bottom: 1px solid rgba(247, 166, 0, 0.08);
  }
  .main-nav.open a { font-size: 1.1rem; padding: 8px 0; }
}

@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-title { font-size: 1.5rem; }
  .stat-number { font-size: 2rem; }
}