/* 开云体育高端官网样式表 */
:root {
  --primary-color: #003366;
  --secondary-color: #c0c0c0;
  --accent-color: #ff4500;
  --bg-dark: #0a0a0a;
  --text-light: #f5f5f5;
  --text-muted: #a0a0a0;
  --spacing-lg: 80px;
  --spacing-md: 40px;
}

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: 0.3s;
}

ul {
  list-style: none;
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
}

.logo img {
  height: 50px;
}

nav ul {
  display: flex;
  gap: 30px;
}

nav ul li a:hover {
  color: var(--accent-color);
}

.search-box {
  margin-top: 10px;
  padding: 0 20px 10px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  justify-content: flex-end;
}

.search-box input {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 15px;
  color: white;
  border-radius: 20px;
  width: 200px;
  transition: 0.3s;
}

.search-box input:focus {
  width: 300px;
  outline: none;
  border-color: var(--accent-color);
}

/* Hero Banner */
.hero {
  height: 100vh;
  background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('../images/banner_bg.jpg') center/cover no-repeat;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: 5px;
}

.hero p {
  font-size: 1.5rem;
  color: var(--secondary-color);
  max-width: 800px;
}

/* Section Common */
section {
  padding: var(--spacing-lg) 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.section-title h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.section-title p {
  color: var(--text-muted);
}

/* Video Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.video-card {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background: #1a1a1a;
  transition: 0.3s;
}

.video-card:hover {
  transform: translateY(-10px);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(255, 69, 0, 0.8);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: 0.3s;
}

.video-card:hover .play-btn {
  opacity: 1;
}

.video-info {
  padding: 20px;
}

.video-info h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.video-tags span {
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: 5px;
  color: var(--text-muted);
}

/* Team Grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.team-member {
  text-align: center;
  padding: 30px;
  background: #1a1a1a;
  border-radius: 10px;
}

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

.faq-item {
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 10px;
}

.faq-question {
  font-weight: bold;
  font-size: 1.1rem;
  margin-bottom: 10px;
  cursor: pointer;
}

.faq-answer {
  color: var(--text-muted);
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.review-card {
  background: #1a1a1a;
  padding: 20px;
  border-radius: 10px;
  border-left: 4px solid var(--accent-color);
}

/* Footer */
footer {
  background: #050505;
  padding: 60px 20px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; }
  nav ul { display: none; }
  .nav-container { justify-content: center; }
}