:root {
  --primary: #5D4E60;
  --secondary: #2D3436;
  --accent: #FFB86C;
  --background: #1A1A2E;
  --background-light: #16213E;
  --text: #FFFFFF;
  --text-light: #A0AEC0;
  --border: rgba(255, 255, 255, 0.1);
  --gradient: linear-gradient(135deg, #5D4E60, #8B7355);
}

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

body {
  font-family: "Noto Sans SC", sans-serif;
  background-color: var(--background);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  padding: 8px 0;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--accent);
}

.hero {
  margin-top: 70px;
  padding: 100px 0;
  background: var(--gradient);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: rgba(255, 184, 108, 0.1);
  border-radius: 50%;
  animation: pulse 6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.2); opacity: 0.1; }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.3rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 40px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--secondary);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 184, 108, 0.4);
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--text);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--text);
  color: var(--background);
  transform: translateY(-3px);
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--gradient);
  margin: 15px auto 0;
  border-radius: 2px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
}

.card {
  background: var(--background-light);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
}

.card-image {
  width: 100%;
  height: 180px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.card-content {
  padding: 25px;
}

.card-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card-desc {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card-tags {
  display: flex;
  gap: 10px;
  margin-top: 15px;
  flex-wrap: wrap;
}

.tag {
  padding: 5px 12px;
  background: rgba(255, 184, 108, 0.2);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--accent);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 50px;
}

.feature-item {
  text-align: center;
  padding: 30px;
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 15px;
}

.feature-desc {
  color: var(--text-light);
  line-height: 1.8;
}

.page-banner {
  margin-top: 70px;
  padding: 80px 0;
  background: var(--gradient);
  text-align: center;
}

.page-banner h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.page-banner p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.9);
}

.filter-bar {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 50px;
}

.filter-btn {
  padding: 10px 25px;
  background: var(--background-light);
  border: 1px solid var(--border);
  border-radius: 30px;
  color: var(--text);
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: var(--secondary);
  border-color: var(--accent);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-text {
  font-size: 1.1rem;
  line-height: 2;
  color: var(--text-light);
  margin-bottom: 40px;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.team-member {
  text-align: center;
  padding: 30px;
  background: var(--background-light);
  border-radius: 16px;
  border: 1px solid var(--border);
}

.team-avatar {
  width: 100px;
  height: 100px;
  background: var(--gradient);
  border-radius: 50%;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.download-section {
  text-align: center;
}

.download-card {
  background: var(--background-light);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 60px;
  max-width: 600px;
  margin: 0 auto;
}

.qr-code {
  width: 200px;
  height: 200px;
  background: var(--text);
  border-radius: 12px;
  margin: 0 auto 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--background);
  font-size: 3rem;
}

.download-info h3 {
  font-size: 1.8rem;
  margin-bottom: 15px;
}

.download-info p {
  color: var(--text-light);
  margin-bottom: 30px;
}

.version-info {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 40px;
}

.version-item h4 {
  font-size: 2rem;
  color: var(--accent);
}

.version-item p {
  color: var(--text-light);
}

footer {
  background: var(--secondary);
  padding: 50px 0 30px;
  border-top: 1px solid var(--border);
}

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

.footer-section h4 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--accent);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: 12px;
}

.footer-section a {
  color: var(--text-light);
}

.footer-section a:hover {
  color: var(--accent);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--border);
  color: var(--text-light);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .download-card {
    padding: 40px 30px;
  }
  
  .version-info {
    flex-direction: column;
    gap: 20px;
  }
}