/* 基础重置 */
body, html {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
  background: linear-gradient(120deg, #232526 0%, #414345 100%);
  color: #fff;
  min-height: 100vh;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 40px;
  height: 64px;
  background: rgba(20, 20, 30, 0.95);
  box-shadow: 0 2px 16px rgba(0,0,0,0.2);
  position: sticky;
  top: 0;
  z-index: 100;
}
.logo {
  font-size: 2rem;
  font-weight: bold;
  letter-spacing: 2px;
  color: #00eaff;
  text-shadow: 0 2px 8px #00eaff44;
}
.ImgLogo {
  height: 2rem;
  margin-left: 0.5rem;  
}
.navbar nav a {
  color: #fff;
  text-decoration: none;
  margin: 0 18px;
  font-size: 1.1rem;
  transition: color 0.2s;
  position: relative;
}
.navbar nav a::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  background: #00eaff;
  transition: width 0.3s;
  position: absolute;
  left: 0;
  bottom: -4px;
}
.navbar nav a:hover::after {
  width: 100%;
}
.navbar .join-btn {
  background: #00eaff;
  color: #232526;
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: bold;
  margin-left: 16px;
  box-shadow: 0 2px 8px #00eaff55;
  transition: background 0.2s, color 0.2s;
}
.navbar .join-btn:hover {
  background: #fff;
  color: #00eaff;
}

.hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 60px 10vw 40px 10vw;
  min-height: 60vh;
  background: linear-gradient(100deg, #232526 60%, #00eaff22 100%);
}
.hero-text {
  flex: 1 1 320px;
  z-index: 2;
}
.hero-text h1 {
  font-size: 2.8rem;
  margin-bottom: 16px;
  color: #00eaff;
  text-shadow: 0 2px 12px #00eaff33;
}
.hero-text p {
  font-size: 1.3rem;
  margin-bottom: 24px;
}
.cta {
  display: inline-block;
  background: linear-gradient(90deg, #00eaff 60%, #00bfff 100%);
  color: #232526;
  padding: 12px 32px;
  border-radius: 30px;
  font-size: 1.2rem;
  font-weight: bold;
  box-shadow: 0 4px 16px #00eaff44;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}
.cta:hover {
  background: #fff;
  color: #00eaff;
  transform: scale(1.05);
}

.carousel {
  flex: 1 1 400px;
  max-width: 480px;
  position: relative;
  margin-left: 40px;
  box-shadow: 0 4px 32px #00eaff22;
  border-radius: 18px;
  overflow: hidden;
  background: #222;
}
.carousel-inner {
  position: relative;
  width: 100%;
  height: 320px;
}
.carousel-inner img {
  position: absolute;
  width: 100%;
  height: 320px;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.7s;
  border-radius: 18px;
}
.carousel-inner img.active {
  opacity: 1;
  z-index: 2;
}
.carousel-controls {
  position: absolute;
  width: 100%;
  top: 50%;
  left: 0;
  display: flex;
  justify-content: space-between;
  transform: translateY(-50%);
  z-index: 3;
}
.carousel-controls span {
  background: rgba(0,234,255,0.7);
  color: #232526;
  font-size: 2rem;
  padding: 6px 16px;
  border-radius: 50%;
  cursor: pointer;
  user-select: none;
  margin: 0 8px;
  transition: background 0.2s;
}
.carousel-controls span:hover {
  background: #fff;
  color: #00eaff;
}

.intro {
  padding: 60px 10vw 40px 10vw;
  background: rgba(0,234,255,0.05);
  border-radius: 24px;
  margin: 40px 5vw;
  box-shadow: 0 2px 24px #00eaff11;
}
.intro h2 {
  color: #00eaff;
  font-size: 2rem;
  margin-bottom: 18px;
}
.intro p {
  font-size: 1.15rem;
  line-height: 1.8;
}

footer {
  text-align: center;
  padding: 24px 0 12px 0;
  color: #aaa;
  font-size: 1rem;
  background: none;
}

.gallery-main {
  padding: 40px 8vw 40px 8vw;
}
.gallery-main h1 {
  color: #00eaff;
  font-size: 2.2rem;
  margin-bottom: 32px;
  text-align: center;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
  margin-bottom: 40px;
}
.gallery-item {
  background: rgba(0,234,255,0.07);
  border-radius: 18px;
  box-shadow: 0 2px 16px #00eaff22;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}
.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
.gallery-item:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 8px 32px #00eaff44;
}
.gallery-item:hover img {
  transform: scale(1.08);
}
.caption {
  padding: 16px;
  font-size: 1.05rem;
  color: #fff;
  background: rgba(0,234,255,0.09);
  border-top: 1px solid #00eaff33;
}

.about-main, .join-main {
  padding: 40px 8vw 40px 8vw;
  max-width: 900px;
  margin: 0 auto;
}
.about-main h1, .join-main h1 {
  color: #00eaff;
  font-size: 2.2rem;
  margin-bottom: 32px;
  text-align: center;
}
.about-section {
  margin-bottom: 32px;
  background: rgba(0,234,255,0.05);
  border-radius: 16px;
  padding: 24px 20px;
  box-shadow: 0 2px 12px #00eaff11;
}
.about-section h2 {
  color: #00eaff;
  font-size: 1.3rem;
  margin-bottom: 12px;
}
.about-section ul {
  padding-left: 20px;
}
.about-section li {
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.join-section {
  background: rgba(0,234,255,0.05);
  border-radius: 16px;
  padding: 32px 20px;
  box-shadow: 0 2px 12px #00eaff11;
  text-align: center;
}
.qrcode-box {
  margin: 32px auto 0 auto;
  width: 180px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,234,255,0.08);
  border: 2px dashed #00eaff77;
  border-radius: 16px;
}
.qrcode-placeholder {
  color: #00eaff;
  font-size: 1.1rem;
  letter-spacing: 2px;
}

.qrcode-img {
  max-width: 180px;
  max-height: 180px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 2px 12px #00eaff33;
}

@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    padding: 40px 4vw 20px 4vw;
  }
  .carousel {
    margin-left: 0;
    margin-top: 32px;
    width: 100%;
    max-width: 100%;
  }
}
@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    height: auto;
    padding: 0 10px;
  }
  .hero-text h1 {
    font-size: 2rem;
  }
  .carousel-inner, .carousel-inner img {
    height: 180px;
  }
  .intro {
    padding: 24px 4vw;
    margin: 20px 2vw;
  }
}
@media (max-width: 700px) {
  .gallery-main, .about-main, .join-main {
    padding: 20px 2vw;
  }
  .gallery-grid {
    gap: 16px;
  }
  .about-section, .join-section {
    padding: 14px 6px;
  }
}