:root {
  --primary: #7C3AED;
  --secondary: #F59E0B;
  --accent: #EC4899;
  --bg-dark: #130B26;
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --bg-light: rgba(124, 58, 237, 0.08);
  --card-border: rgba(124, 58, 237, 0.25);
}

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, h5, h6, p {
  margin: 0;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.75rem;
  position: relative;
  display: inline-block;
}

.section-title.underline-decor {
  padding-bottom: 0.75rem;
}

.section-title.underline-decor::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 4rem;
  height: 0.25rem;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 9999px;
}

.section-title.bar-decor {
  padding-left: 1rem;
}

.section-title.bar-decor::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 0.35rem;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 9999px;
}

.section-subtitle {
  color: var(--text-muted);
  text-align: center;
  font-size: clamp(0.875rem, 2vw, 1rem);
  margin-bottom: 2.5rem;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(124, 58, 237, 0.2);
  border-color: var(--primary);
}

.solid-card {
  background: var(--bg-light);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 0.75rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.solid-card:hover {
  transform: scale(1.03);
  box-shadow: 0 12px 30px rgba(236, 72, 153, 0.18);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 9999px;
  font-weight: 700;
  color: white;
  background: linear-gradient(135deg, var(--primary), #A855F7);
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(124, 58, 237, 0.6);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 0.5rem;
  font-weight: 700;
  color: var(--bg-dark);
  background: linear-gradient(135deg, var(--secondary), #FBBF24);
  transition: transform 0.2s ease, filter 0.2s ease;
}

.btn-secondary:hover {
  transform: translateY(-3px);
  filter: brightness(1.1);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  font-weight: 600;
  color: var(--text-main);
  background: transparent;
  border: 1px solid var(--primary);
  transition: background 0.2s ease, color 0.2s ease;
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-main);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: width 0.2s ease;
}

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

.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(124, 58, 237, 0.15);
  color: var(--primary);
  border: 1px solid rgba(124, 58, 237, 0.3);
}

.tag-gold {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(245, 158, 11, 0.12);
  color: var(--secondary);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.page-header {
  padding-top: 8rem;
  padding-bottom: 4rem;
  background: linear-gradient(180deg, rgba(124, 58, 237, 0.15), transparent);
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--secondary);
}

.qr-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 1rem;
  text-align: center;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.qr-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

.qr-card img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin: 0 auto 0.75rem;
  border-radius: 0.5rem;
}

@media (max-width: 767px) {
  .container {
    padding-left: 0.875rem;
    padding-right: 0.875rem;
  }
  
  .qr-card img {
    width: 96px;
    height: 96px;
  }
}