:root {
  --primary-blue: #1e90ff;
  --deep-blue: #0a192f;
  --light-blue: #e6f0ff;
  --accent-blue: #00d4ff;
  --text-dark: #1a1a1a;
  --text-gray: #556;
  --white: #ffffff;
  --bg-color: #f7fbff;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
}
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-area img {
  height: 36px;
  border-radius: 6px;
}
.logo-area span {
  font-size: 20px;
  font-weight: bold;
  color: var(--deep-blue);
}
.nav {
  display: flex;
  gap: 20px;
}
.nav a {
  font-size: 15px;
  color: var(--text-gray);
  transition: color 0.2s;
}
.nav a:hover {
  color: var(--primary-blue);
}
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--deep-blue);
  cursor: pointer;
}
.hero {
  background: linear-gradient(135deg, var(--deep-blue), #143a6e);
  color: var(--white);
  padding: 60px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(30,144,255,0.2) 0%, transparent 60%);
  animation: rotate 20s linear infinite;
}
@keyframes rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.hero h1 {
  font-size: 32px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.hero p {
  font-size: 16px;
  color: #b0c4de;
  max-width: 600px;
  margin: 0 auto 30px;
  position: relative;
  z-index: 1;
}
.download-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: bold;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary {
  background: var(--primary-blue);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(30,144,255,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30,144,255,0.6);
}
.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
}
.section-title {
  font-size: 26px;
  color: var(--deep-blue);
  margin-bottom: 30px;
  text-align: center;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: var(--primary-blue);
  margin: 10px auto 0;
  border-radius: 2px;
}
.carousel-container {
  overflow: hidden;
  position: relative;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.carousel-track {
  display: flex;
  transition: transform 0.5s ease;
}
.carousel-slide {
  min-width: 100%;
  position: relative;
}
.carousel-slide img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}
.carousel-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px 20px 20px;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: var(--white);
}
.carousel-caption h3 {
  font-size: 20px;
  margin-bottom: 5px;
}
.carousel-caption p {
  font-size: 14px;
  color: #ccc;
}
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ccc;
  cursor: pointer;
  transition: background 0.3s;
}
.dot.active {
  background: var(--primary-blue);
  transform: scale(1.2);
}
.grid-2, .grid-3, .grid-4 {
  display: grid;
  gap: 24px;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}
.card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.12);
}
.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}
.card-body {
  padding: 16px;
}
.card-body h3 {
  font-size: 16px;
  color: var(--deep-blue);
  margin-bottom: 8px;
}
.card-body p {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.5;
}
.card-meta {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 12px;
  color: #888;
}
.rank-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--white);
  padding: 12px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.rank-num {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-blue);
  width: 40px;
  text-align: center;
}
.rank-item img {
  width: 80px;
  height: 60px;
  object-fit: cover;
  border-radius: 8px;
}
.rank-info h3 {
  font-size: 15px;
  margin-bottom: 4px;
}
.rank-info p {
  font-size: 12px;
  color: var(--text-gray);
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--white);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.faq-item h3 {
  font-size: 16px;
  color: var(--deep-blue);
  margin-bottom: 8px;
}
.faq-item p {
  font-size: 14px;
  color: var(--text-gray);
}
.gossip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.gossip-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.gossip-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.gossip-content {
  padding: 16px;
}
.gossip-content h3 {
  font-size: 16px;
  margin-bottom: 8px;
}
.gossip-content p {
  font-size: 13px;
  color: var(--text-gray);
}
.footer {
  background: var(--deep-blue);
  color: #8fa8c8;
  padding: 40px 20px 20px;
  text-align: center;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 14px;
}
.footer-links a {
  color: #8fa8c8;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--white);
}
.footer-search-tags {
  font-size: 13px;
  margin-bottom: 20px;
  color: #5a7a9c;
}
.footer-search-tags span {
  margin: 0 6px;
}
.copyright {
  font-size: 13px;
  color: #5a7a9c;
  border-top: 1px solid #1c3a60;
  padding-top: 20px;
}
.copyright time {
  font-family: monospace;
}
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .gossip-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .carousel-slide img {
    height: 300px;
  }
}
@media (max-width: 768px) {
  .nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  }
  .nav.open {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .grid-2, .grid-3, .grid-4, .gossip-grid {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 24px;
  }
  .carousel-slide img {
    height: 220px;
  }
  .section {
    padding: 40px 16px;
  }
}