/* ============ 威尔赛事管理系统官网样式 ============ */
:root {
  --bg: #0f1923;
  --bg-alt: #0d1520;
  --card: #1a2735;
  --card-hover: #1f2f3f;
  --border: #2a3a4a;
  --text: #e0e6ed;
  --text2: #8b949e;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent2: #ff6b35;
  --radius: 10px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "Microsoft YaHei", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ============ 导航栏 ============ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 25, 35, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.4); }
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-logo { height: 32px; width: auto; }
.brand-text { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: 1px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  color: var(--text2);
  text-decoration: none;
  font-size: 14px;
  padding: 8px 14px;
  border-radius: 6px;
  transition: all 0.2s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.06); }
.nav-links a.active { color: var(--accent); }
.nav-links a.nav-enter {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  margin-left: 8px;
}
.nav-links a.nav-enter:hover {
  background: var(--accent-hover);
  color: #fff;
}
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 24px; cursor: pointer; }

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(59,130,246,0.15), transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255,107,53,0.1), transparent 50%),
    var(--bg);
  z-index: 0;
}
.hero-content { position: relative; z-index: 1; }
.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff, #9ec5ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle { font-size: 18px; color: var(--text2); margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 60px; }
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s;
  border: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(59,130,246,0.4); }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.hero-stats { display: flex; gap: 48px; justify-content: center; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; align-items: center; }
.stat-num { font-size: 32px; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 13px; color: var(--text2); margin-top: 4px; }

/* ============ 通用 Section ============ */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: 36px; font-weight: 700; text-align: center; margin-bottom: 12px; }
.section-desc { font-size: 16px; color: var(--text2); text-align: center; margin-bottom: 56px; }

/* ============ 产品卡片 ============ */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.3s;
  display: block;
}
.product-card:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}
.product-icon { font-size: 44px; margin-bottom: 16px; }
.product-card h3 { font-size: 22px; margin-bottom: 12px; }
.product-card p { color: var(--text2); font-size: 14px; margin-bottom: 20px; }
.product-link { color: var(--accent); font-size: 14px; font-weight: 600; }

/* ============ 功能列表 ============ */
.feature-list { display: flex; flex-direction: column; gap: 48px; }
.feature-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.feature-item.reverse .feature-text { order: 2; }
.feature-item.reverse .feature-visual { order: 1; }
.feature-text h3 { font-size: 26px; margin-bottom: 16px; }
.feature-text p { color: var(--text2); font-size: 15px; margin-bottom: 20px; }
.feature-tags { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; }
.feature-tags li {
  background: rgba(59,130,246,0.12);
  color: #9ec5ff;
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid rgba(59,130,246,0.25);
}
.feature-visual { display: flex; align-items: center; justify-content: center; }
.feature-actions { margin-top: 20px; }
.feature-actions .btn { padding: 12px 28px; font-size: 14px; }
.visual-box {
  width: 100%;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #1a2735, #0d1520);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text2);
  font-size: 16px;
  letter-spacing: 2px;
}

/* ============ 技术亮点 ============ */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.tech-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.3s;
}
.tech-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.tech-card h3 { font-size: 18px; margin-bottom: 12px; }
.tech-card p { color: var(--text2); font-size: 14px; }

/* ============ 关于我们 ============ */
.about-content { max-width: 720px; margin: 0 auto; text-align: center; }
.about-text { color: var(--text2); font-size: 16px; line-height: 1.8; margin-bottom: 40px; }
.contact-info { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.contact-label { font-size: 14px; font-weight: 700; color: var(--accent); }
.contact-value { font-size: 14px; color: var(--text2); }

/* ============ 页脚 ============ */
.footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 40px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.footer-logo { height: 28px; width: auto; }
.footer-copy { color: var(--text2); font-size: 13px; }
.footer-beian a {
  color: var(--text2);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-beian a:hover { color: var(--accent); }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .hero-title { font-size: 34px; }
  .product-grid { grid-template-columns: 1fr; }
  .feature-item { grid-template-columns: 1fr; gap: 24px; }
  .feature-item.reverse .feature-text { order: 1; }
  .feature-item.reverse .feature-visual { order: 2; }
  .tech-grid { grid-template-columns: 1fr; }
  .contact-info { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
}