*, *::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: #0c0b0f;
  color: #e8e4f0;
  line-height: 1.6;
}

/* ===== 独特视觉系统：暗夜电光野兽派 ===== */
/* 大胆的霓虹紫+铬绿+暗黑背景，粗野主义切割感，杂志式分层 */

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

.section { padding:80px 0; position: relative; }
.section:nth-child(even) { background: #121016; border-top: 1px solid rgba(0,255,200,0.08); border-bottom: 1px solid rgba(0,255,200,0.08); }

/* ===== 导航 ===== */
.site-header {
  position: fixed; top:0; left:0; width:100%; z-index:1000;
  background: rgba(12,11,15,0.92);
  backdrop-filter: blur(14px) saturate(180%);
  border-bottom: 1px solid rgba(0,255,200,0.15);
  box-shadow: 0 0 40px rgba(160,0,255,0.08);
}
.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:#e8e4f0;
  letter-spacing: -0.5px;
}
.logo-icon {
  width:40px; height:40px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  font-size:1.2rem;
  background: linear-gradient(135deg, #a855f7, #00ffc8);
  color:#0c0b0f;
  font-weight:900;
  box-shadow: 0 0 20px rgba(168,85,247,0.3);
}
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a {
  text-decoration:none; font-size:0.85rem; font-weight:600;
  color: rgba(232,228,240,0.7);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  transition: 0.25s;
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute; bottom:-4px; left:0; width:0; height:2px;
  background: #00ffc8;
  transition: 0.3s;
}
.main-nav a:hover { color: #00ffc8; }
.main-nav a:hover::after { width:100%; }
.nav-cta {
  padding:10px 24px; border-radius:6px;
  background: linear-gradient(135deg, #a855f7, #7c3aed);
  color:#fff!important;
  font-weight:700!important;
  letter-spacing: 0.5px!important;
  box-shadow: 0 4px 20px rgba(168,85,247,0.25);
  transition: 0.3s;
}
.nav-cta:hover { transform: scale(1.04); box-shadow: 0 6px 30px rgba(168,85,247,0.4); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; background:none; border:none; color:#e8e4f0; font-size:1.6rem; cursor:pointer; }

/* ===== Hero ===== */
.hero {
  min-height:85vh;
  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(168,85,247,0.15), transparent 60%);
  pointer-events:none;
}
.hero-content { max-width:720px; position: relative; z-index:2; }
.hero-eyebrow {
  display:inline-block; font-size:0.7rem; font-weight:700;
  padding:6px 18px; border-radius:30px; margin-bottom:20px;
  background: rgba(0,255,200,0.12);
  color: #00ffc8;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid rgba(0,255,200,0.2);
}
.hero h1 {
  font-size:3.4rem; line-height:1.1; margin-bottom:20px;
  font-weight:800;
  color: #f0ecf8;
  letter-spacing: -1px;
}
.hero h1 span { background: linear-gradient(135deg, #a855f7, #00ffc8); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.hero p {
  font-size:1.1rem; opacity:0.6; max-width:560px; margin-bottom:36px;
  color: #c8c0d8;
  line-height: 1.7;
}
.hero-buttons { display:flex; gap:16px; }
.hero-image {
  border-radius:16px; overflow:hidden;
  box-shadow: 0 20px 80px rgba(0,0,0,0.6);
  border: 1px solid rgba(168,85,247,0.15);
  position: relative;
}
.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:8px;
  font-weight:700; cursor:pointer; border:none; text-decoration:none;
  transition: 0.25s cubic-bezier(0.22,1,0.36,1);
  font-size:0.85rem; text-transform: uppercase; letter-spacing: 1px;
}
.btn-primary {
  color:#0c0b0f;
  background: linear-gradient(135deg, #00ffc8, #00d4a0);
  box-shadow: 0 4px 24px rgba(0,255,200,0.25);
}
.btn-primary:hover { transform: translateY(-2px) scale(1.02); box-shadow: 0 8px 40px rgba(0,255,200,0.35); }
.btn-outline {
  background:transparent; border:1.5px solid rgba(168,85,247,0.4);
  color: #a855f7;
}
.btn-outline:hover { background: rgba(168,85,247,0.08); border-color: #a855f7; transform: translateY(-2px); }

/* ===== 标签/标题 ===== */
.section-label {
  display:inline-block; font-size:0.65rem; font-weight:700;
  letter-spacing:3px; margin-bottom:12px;
  color: #00ffc8;
  text-transform: uppercase;
  padding: 4px 0;
  border-bottom: 2px solid rgba(0,255,200,0.2);
}
.section-title {
  font-size:2.4rem; margin-bottom:14px; font-weight:800;
  color: #f0ecf8;
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.section-desc { max-width:600px; opacity:0.55; margin-bottom:44px; color: #b8b0c8; font-size:1.05rem; }

/* ===== 卡片网格 ===== */
.cards-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:24px; }
.category-card {
  border-radius:14px; padding:32px;
  background: linear-gradient(145deg, rgba(18,16,22,0.9), rgba(12,11,15,0.9));
  border: 1px solid rgba(168,85,247,0.1);
  transition: 0.3s cubic-bezier(0.22,1,0.36,1);
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content:'';
  position: absolute; top:0; left:0; width:100%; height:3px;
  background: linear-gradient(90deg, #a855f7, #00ffc8);
  opacity:0;
  transition: 0.3s;
}
.category-card:hover { transform:translateY(-6px); border-color: rgba(168,85,247,0.25); box-shadow:0 12px 40px rgba(0,0,0,0.4); }
.category-card:hover::before { opacity:1; }
.card-icon {
  width:52px; height:52px; border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:1.4rem;
  background: rgba(168,85,247,0.1);
  color: #a855f7;
}
.card-link {
  font-weight:700; font-size:0.8rem; text-decoration:none;
  color: #00ffc8;
  display: inline-flex; align-items:center; gap:6px;
  text-transform: uppercase; letter-spacing: 1px;
}
.card-link::after { content:'→'; transition: 0.2s; }
.card-link:hover::after { transform: translateX(4px); }

/* ===== 特性块 ===== */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; }
.feature-image {
  border-radius:14px; overflow:hidden;
  border: 1px solid rgba(168,85,247,0.1);
  box-shadow: 0 8px 40px rgba(0,0,0,0.3);
}
.feature-image img { width:100%; height:auto; display:block; }
.feature-text h3 { font-size:1.8rem; font-weight:800; margin-bottom:16px; color:#f0ecf8; }
.feature-list { list-style:none; }
.feature-list li {
  padding:10px 0; display:flex; align-items:center; gap:12px;
  font-size:1rem; color: #c8c0d8;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.feature-list li::before {
  content:'✦';
  font-weight:700;
  color: #00ffc8;
  font-size:0.8rem;
}

/* ===== 数据条 ===== */
.stats-bar { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-item {
  padding:32px 16px; border-radius:14px;
  background: rgba(18,16,22,0.6);
  border: 1px solid rgba(168,85,247,0.08);
  transition: 0.3s;
}
.stat-item:hover { border-color: rgba(0,255,200,0.15); transform: translateY(-2px); }
.stat-number {
  font-size:2.8rem; font-weight:900;
  background: linear-gradient(135deg, #a855f7, #00ffc8);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  line-height:1;
}
.stat-label { font-size:0.85rem; opacity:0.5; margin-top:8px; color:#b8b0c8; text-transform: uppercase; letter-spacing:1px; }

/* ===== 内容墙 ===== */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:24px; }
.content-wall-item {
  border-radius:14px; overflow:hidden;
  background: linear-gradient(145deg, rgba(18,16,22,0.8), rgba(12,11,15,0.8));
  border: 1px solid rgba(168,85,247,0.08);
  transition: 0.3s cubic-bezier(0.22,1,0.36,1);
}
.content-wall-item:hover { transform:translateY(-4px); border-color: rgba(0,255,200,0.15); 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:20px 22px 24px; }
.content-wall-body h4 { font-weight:700; color:#f0ecf8; margin-bottom:6px; font-size:1.05rem; }
.content-wall-body p { font-size:0.85rem; opacity:0.5; color:#b8b0c8; }

/* ===== FAQ ===== */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item {
  border: 1px solid rgba(168,85,247,0.08);
  border-radius:12px; margin-bottom:10px; overflow:hidden;
  background: rgba(18,16,22,0.4);
  transition: 0.3s;
  cursor:pointer;
}
.faq-item:hover { border-color: rgba(168,85,247,0.2); }
.faq-item .faq-question {
  padding:18px 22px; font-weight:700; display:flex; justify-content:space-between;
  color: #e8e4f0;
  font-size:1rem;
}
.faq-item .faq-question::after {
  content:'+'; font-size:1.2rem; color: #00ffc8;
  transition: 0.3s;
}
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer {
  padding:0 22px 20px; display:none; opacity:0.6;
  color: #b8b0c8; line-height:1.7;
}
.faq-item.open .faq-answer { display:block; }
.faq-item.open { border-color: rgba(0,255,200,0.15); }

/* ===== CTA横幅 ===== */
.cta-banner {
  padding:64px 32px; text-align:center; border-radius:16px;
  background: linear-gradient(135deg, #7c3aed, #a855f7, #00ffc8);
  color:#fff;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content:'';
  position: absolute; top:-50%; left:-20%; width:140%; height:200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.08), transparent 50%);
  pointer-events:none;
}
.cta-banner h2 { color:#fff; font-size:2.2rem; font-weight:800; margin-bottom:12px; position:relative; z-index:2; }
.cta-banner p { color: rgba(255,255,255,0.7); margin-bottom:28px; position:relative; z-index:2; }
.cta-banner .btn-primary {
  background:#fff; color:#7c3aed;
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
  position:relative; z-index:2;
}
.cta-banner .btn-primary:hover { transform: translateY(-2px) scale(1.02); }

/* ===== 页脚 ===== */
.site-footer { padding:64px 0 28px; border-top: 1px solid rgba(168,85,247,0.08); }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand h3 { font-size:1.4rem; font-weight:800; margin-bottom:10px; color:#f0ecf8; }
.footer-brand p { opacity:0.4; font-size:0.85rem; color:#b8b0c8; max-width:280px; }
.footer-col h4 { font-size:0.8rem; font-weight:700; text-transform: uppercase; letter-spacing:2px; color:#00ffc8; margin-bottom:16px; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul a { text-decoration:none; color: rgba(232,228,240,0.5); font-size:0.9rem; transition:0.2s; }
.footer-col ul a:hover { color: #a855f7; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.04);
  margin-top:40px; padding-top:20px;
  text-align:center; font-size:0.8rem;
  color: rgba(232,228,240,0.3);
}

/* ===== 工具类 ===== */
.text-accent { color: #00ffc8; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.5; color:#b8b0c8; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hero h1 { font-size:2.2rem; }
  .section-title { font-size:1.8rem; }
  .feature-block { grid-template-columns:1fr; gap:32px; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .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(12,11,15,0.98);
    padding:24px; gap:16px;
    border-bottom: 1px solid rgba(168,85,247,0.15);
  }
  .main-nav.open a { padding:8px 0; }
  .hero { min-height:60vh; }
}
@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; }
  .container { padding:0 16px; }
  .stat-number { font-size:2rem; }
}