:root {
  --purple-main: #7b2cbf;
  --purple-dark: #3c096c;
  --purple-light: #e0aaff;
  --purple-bg: #1a0b2e;
  --text-main: #2b2b2b;
  --text-light: #f3e8ff;
  --bg-light: #faf5ff;
  --card-bg: #ffffff;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { width: 90%; max-width: 1200px; margin: 0 auto; }

/* Header */
.site-header {
  background-color: var(--purple-bg);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.header-inner { display: flex; justify-content: space-between; align-items: center; }
.logo-wrap { display: flex; align-items: center; gap: 12px; color: white; font-size: 22px; font-weight: bold; }
.logo-wrap img { height: 36px; width: auto; border-radius: 8px; }
.nav-links { display: flex; gap: 24px; }
.nav-links a { color: var(--text-light); font-size: 15px; transition: color 0.3s; }
.nav-links a:hover { color: var(--purple-light); }

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--purple-dark) 0%, var(--purple-main) 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: 0;
  width: 100%;
  height: 100px;
  background: var(--bg-light);
  border-radius: 50% 50% 0 0;
}
.hero-content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: 48px; margin-bottom: 20px; line-height: 1.2; font-weight: 800; }
.hero p { font-size: 18px; opacity: 0.9; margin-bottom: 40px; }
.btn-download {
  display: inline-block;
  background-color: #ff9100;
  color: white;
  font-size: 20px;
  font-weight: bold;
  padding: 18px 48px;
  border-radius: 50px;
  box-shadow: 0 10px 25px rgba(255, 145, 0, 0.4);
  transition: transform 0.3s, box-shadow 0.3s;
}
.btn-download:hover { transform: translateY(-3px); box-shadow: 0 15px 30px rgba(255, 145, 0, 0.6); }

/* Sections Common */
section { padding: 70px 0; }
.section-title { text-align: center; font-size: 32px; color: var(--purple-dark); margin-bottom: 15px; font-weight: bold; }
.section-desc { text-align: center; color: #666; margin-bottom: 50px; font-size: 16px; }

/* Features */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.feature-card {
  background: var(--card-bg);
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(123, 44, 191, 0.08);
  border: 1px solid #f0e6ff;
  transition: transform 0.3s;
}
.feature-card:hover { transform: translateY(-5px); }
.feature-card h3 { color: var(--purple-main); font-size: 20px; margin-bottom: 15px; }
.feature-card p { color: #555; font-size: 15px; }

/* Topics */
.topics { background-color: #f4eaff; }
.topic-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.topic-item {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 6px 15px rgba(0,0,0,0.1);
  background: #000;
  aspect-ratio: 3/4;
}
.topic-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
.topic-item:hover img { transform: scale(1.05); opacity: 0.8; }
.topic-item span {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 15px 10px;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  color: white;
  font-size: 14px;
  text-align: center;
  font-weight: bold;
}

/* Gallery */
.gallery-scroll { display: flex; gap: 15px; overflow-x: auto; padding-bottom: 20px; scrollbar-width: none; }
.gallery-scroll::-webkit-scrollbar { display: none; }
.gallery-item {
  flex: 0 0 160px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  aspect-ratio: 3/4;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; }

/* AI Pick */
.ai-pick { background: var(--purple-bg); color: white; }
.ai-pick .section-title { color: var(--purple-light); }
.ai-pick .section-desc { color: #bbaacc; }
.ai-pick-content {
  display: flex;
  align-items: center;
  gap: 40px;
  background: rgba(255,255,255,0.05);
  padding: 40px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.1);
}
.ai-pick-img { flex: 0 0 300px; border-radius: 16px; overflow: hidden; aspect-ratio: 3/4; }
.ai-pick-img img { width: 100%; height: 100%; object-fit: cover; }
.ai-pick-text h3 { color: var(--purple-light); font-size: 24px; margin-bottom: 15px; }
.ai-pick-text p { color: #ddd; margin-bottom: 20px; }
.ai-pick-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.ai-pick-tags span {
  background: rgba(189, 110, 255, 0.2);
  color: var(--purple-light);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
}

/* Reviews */
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.review-card {
  background: white;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  border: 1px solid #f0e6ff;
}
.review-user { display: flex; align-items: center; gap: 12px; margin-bottom: 15px; }
.review-avatar { width: 40px; height: 40px; background: var(--purple-main); border-radius: 50%; display: flex; justify-content: center; align-items: center; color: white; font-weight: bold; }
.review-name { font-weight: bold; color: var(--purple-dark); }
.review-text { color: #444; font-size: 14px; line-height: 1.7; }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: white; margin-bottom: 15px; border-radius: 12px; padding: 20px 25px; box-shadow: 0 2px 10px rgba(0,0,0,0.03); border: 1px solid #eee; }
.faq-item h3 { font-size: 17px; color: var(--purple-dark); margin-bottom: 10px; }
.faq-item p { font-size: 15px; color: #555; }

/* Download CTA */
.download-cta {
  background: linear-gradient(135deg, #9d4edd, #5a189a);
  text-align: center;
  color: white;
  padding: 80px 0;
}
.download-cta h2 { font-size: 36px; margin-bottom: 20px; }
.download-cta p { font-size: 16px; opacity: 0.9; margin-bottom: 40px; }

/* Footer */
.site-footer { background: var(--purple-bg); color: #886699; padding: 40px 0 20px; text-align: center; font-size: 13px; border-top: 1px solid rgba(255,255,255,0.05); }
.site-footer p { margin-bottom: 10px; }
.site-footer a { color: #886699; transition: color 0.3s; }
.site-footer a:hover { color: var(--purple-light); }

/* Responsive */
@media (max-width: 1024px) {
  .hero h1 { font-size: 36px; }
  .features-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .topic-grid { grid-template-columns: repeat(3, 1fr); }
  .ai-pick-content { flex-direction: column; text-align: center; }
  .ai-pick-img { flex: 0 0 auto; width: 100%; max-width: 300px; }
  .ai-pick-tags { justify-content: center; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero { padding: 60px 0; }
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 15px; }
  .btn-download { padding: 15px 36px; font-size: 18px; }
  .features-grid, .reviews-grid { grid-template-columns: 1fr; }
  .topic-grid { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 26px; }
  .download-cta h2 { font-size: 28px; }
}