:root {
  --bg-main: #f9f6f2;
  --text-main: #2d2d2d;
  --text-light: #666;
  --primary: #ff3b5c;
  --primary-hover: #e6324f;
  --secondary: #ffb703;
  --border-radius: 20px;
  --section-padding: 60px 20px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  padding-bottom: 70px;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.logo-group { display: flex; align-items: center; gap: 10px; }
.logo-group img { height: 32px; width: auto; }
.logo-group span { font-weight: bold; font-size: 1.2rem; }
.nav-links { display: none; }
.nav-links a { margin-left: 20px; font-size: 0.95rem; font-weight: 500; }
.nav-links a:hover { color: var(--primary); }

.hero {
  background: linear-gradient(135deg, #fff5f6 0%, #ffe4e8 100%);
  padding: 40px 20px 30px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 15px;
  color: #111;
  line-height: 1.3;
}
.hero h1 span { color: var(--primary); }
.hero p {
  color: var(--text-light);
  font-size: 1rem;
  margin-bottom: 25px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.download-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 30px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  background: #fff;
  border: 2px solid var(--primary);
  color: var(--primary);
  cursor: pointer;
}
.btn:hover { background: #fff0f2; transform: translateY(-2px); }
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }

.hero-carousel {
  display: flex;
  gap: 15px;
  overflow-x: auto;
  padding: 10px 0;
  scroll-snap-type: x mandatory;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.hero-carousel::-webkit-scrollbar { display: none; }
.hero-carousel img {
  width: 120px;
  height: 170px;
  object-fit: cover;
  border-radius: 12px;
  scroll-snap-align: start;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.marquee-container {
  background: #1a1a1a;
  color: #fff;
  padding: 10px 0;
  overflow: hidden;
  white-space: nowrap;
}
.marquee-content {
  display: inline-block;
  animation: marquee 20s linear infinite;
  font-weight: bold;
  font-size: 0.9rem;
  background: linear-gradient(90deg, #ff6b6b, #ffd93d, #6bcb77, #4d96ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.section {
  padding: var(--section-padding);
  border-bottom: 1px solid #eee;
}
.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 30px;
  text-align: center;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--primary);
  margin: 10px auto 0;
  border-radius: 2px;
}

.section-today { background-color: #fffbf5; }
.section-interactive { background-color: #f0f7ff; }
.section-micro { background-color: #f5fff5; }
.section-fan { background-color: #fff5f8; }
.section-creator { background-color: #f9f5ff; }
.section-reviews { background-color: #fffaf0; }
.section-privacy { background-color: #f0f9fa; }
.section-faq { background-color: #fdf6f6; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 20px;
}
.card {
  background: #fff;
  padding: 15px;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  display: flex;
  flex-direction: column;
}
.card-img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 10px;
  background: #eee;
}
.card-title { font-weight: 600; font-size: 1rem; margin-bottom: 5px; }
.card-desc { font-size: 0.8rem; color: var(--text-light); margin-bottom: 8px; flex-grow: 1; }
.card-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 8px; }
.card-tag {
  background: #f0f0f0;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  color: #555;
}
.card-date { font-size: 0.7rem; color: #999; text-align: right; }

.split-layout {
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.split-image { flex: 1; }
.split-image img { width: 100%; border-radius: var(--border-radius); box-shadow: 0 8px 20px rgba(0,0,0,0.1); }
.split-content { flex: 1; }
.split-content h3 { font-size: 1.4rem; margin-bottom: 15px; }
.split-content p { color: var(--text-light); margin-bottom: 15px; }

.list-timeline {
  position: relative;
  padding-left: 30px;
}
.list-timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #ddd;
}
.timeline-item {
  position: relative;
  margin-bottom: 20px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--primary);
}
.timeline-time { font-weight: bold; color: var(--primary); font-size: 0.9rem; margin-bottom: 4px; }
.timeline-text { font-size: 0.9rem; color: #444; }

.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  padding: 15px 20px;
  border-radius: 12px;
  margin-bottom: 15px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.faq-q { font-weight: 600; margin-bottom: 8px; }
.faq-a { color: var(--text-light); font-size: 0.95rem; }

.review-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}
.review-card {
  background: #fff;
  padding: 15px;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  display: flex;
  gap: 10px;
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: contain;
  background: #f5f5f5;
  border: 1px solid #eee;
}
.review-content { flex: 1; }
.review-name { font-weight: 600; font-size: 0.9rem; margin-bottom: 4px; }
.review-text { font-size: 0.85rem; color: #555; }

.footer {
  background: #222;
  color: #aaa;
  padding: 40px 20px;
  text-align: center;
  font-size: 0.85rem;
}
.footer-links { margin: 15px 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; }
.footer-links a { color: #ccc; }
.footer-links a:hover { color: #fff; }
.footer-copyright { margin-bottom: 10px; }
.footer-beian { margin-top: 10px; }
.footer-beian a { color: #888; text-decoration: underline; }
.update-time { font-size: 0.75rem; color: #666; margin-top: 8px; }

.floating-download {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: 30px;
  box-shadow: 0 6px 20px rgba(255, 59, 92, 0.4);
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 999;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}
.floating-download:hover { transform: translateX(-50%) scale(1.05); box-shadow: 0 8px 25px rgba(255, 59, 92, 0.5); }
.floating-download img { height: 20px; width: auto; background: #fff; border-radius: 4px; padding: 2px; }

.copy-modal {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}
.copy-modal.show { display: flex; }
.copy-box {
  background: #fff;
  padding: 25px;
  border-radius: 20px;
  width: 85%;
  max-width: 340px;
  text-align: center;
}
.copy-box p { margin-bottom: 15px; font-size: 0.95rem; color: #333; }
.copy-input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 8px;
  margin-bottom: 15px;
  font-size: 0.85rem;
  text-align: center;
  background: #f9f9f9;
}
.copy-btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 30px;
  border-radius: 30px;
  font-size: 1rem;
  cursor: pointer;
  width: 100%;
}

.mobile-menu-btn {
  display: block;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}
.mobile-nav {
  display: none;
  flex-direction: column;
  background: #fff;
  padding: 10px 20px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  border-top: 1px solid #eee;
}
.mobile-nav a { padding: 10px 0; border-bottom: 1px solid #f5f5f5; font-size: 0.95rem; }
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav.open { display: flex; }

@media (min-width: 768px) {
  .hero { padding: 60px 20px 40px; }
  .hero h1 { font-size: 2.6rem; }
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
  .split-layout { flex-direction: row; align-items: center; }
  .split-layout.reverse { flex-direction: row-reverse; }
  .header { padding: 15px 40px; }
  .nav-links { display: flex; }
  .mobile-menu-btn { display: none; }
  .mobile-nav { display: none !important; }
  .footer { padding: 50px 40px; }
  .floating-download { bottom: 30px; }
}

@media (min-width: 1024px) {
  .hero h1 { font-size: 3.2rem; }
  .section { padding: 80px 40px; }
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .review-wall { grid-template-columns: repeat(3, 1fr); }
}