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

:root {
  --bg-primary: #141943;
  --bg-section: #111540;
  --bg-card: rgba(255, 255, 255, 0.03);
  --text-white: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.6);
  --accent-purple: #644fff;
  --gradient-text: linear-gradient(90deg, #40CEE4 0%, #EACCF8 48%, #A195FF 100%);s
  --card-border: rgba(255, 255, 255, 0.12);
  --card-glass: rgba(255, 255, 255, 0.04);
  --radius-md: 16px;
  --radius-lg: 60px;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Alibaba PuHuiTi 3.0', -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }
button { font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.section { padding: 100px 0; }

.section-title {
  font-size: 48px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 50px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}
.gradient-text {
  background: linear-gradient(90deg, #40CEE4 0%, #EACCF8 48%, #A195FF 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-purple);
  color: var(--text-white);
  padding: 12px 32px;
  border-radius: var(--radius-lg);
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: opacity 0.3s, transform 0.2s;
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-outline-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 36px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.4);
  color: var(--text-white);
  font-size: 16px;
  font-weight: 600;
  transition: background 0.3s;
}
.btn-outline-white:hover { background: rgba(255,255,255,0.08); }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 40px;
  background: rgba(20, 25, 67, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; margin-right: auto; }
.logo svg { height: 32px; width: auto; }
.nav-links { display: flex; gap: 32px; margin-right: 24px; }
.nav-links a { font-size: 16px; font-weight: 500; opacity: 0.9; }
.nav-links a:hover { opacity: 1; }
.nav-btn { padding: 8px 24px; font-size: 14px; }

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: 140px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: radial-gradient(ellipse 100% 80% at 45% 40%, rgba(84, 90, 160, 0.9) 0%, rgba(30, 40, 100, 0.55) 35%, transparent 70%);
}
.hero-layout {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 40px;
}
.hero-left {
  flex: 0 1 45%;
  min-width: 480px;
}
.hero-title {
  font-size: 60px;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero-title2 {
  font-size: 60px;
  font-weight: 1000;
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero-subtitle {
  font-size: 40px;
  font-weight: 400;
  opacity: 0.7;
  margin-bottom: 24px;
}
.hero-desc {
  font-size: 20px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
}
.hero-buttons { display: flex; gap: 14px; }
.hero-dl-btn {
  padding: 14px 40px;
  font-size: 18px;
  border-radius: var(--radius-lg);
}
.hero-right {
  flex: 1;
  position: relative;
}
.hero-image {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== FEATURED ===== */
.featured { background: var(--bg-primary); overflow: hidden; }
.featured-wrapper {
  display: flex;
  align-items: center;
  padding: 0 10px;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
}
.featured-viewport {
  flex: 1;
  overflow: hidden;
  position: relative;
  padding: 20px 0;
}
.featured-track {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-height: 400px;
}
.featured-card {
  flex: 0 0 20%;
  padding: 0 6px;
  text-align: center;
  position: relative;
  transition: transform 0.5s ease;
}
.featured-card img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 20px;
  border: 2px solid rgba(255, 255, 255, 0.30);
  padding: 10px;
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.00) -2.13%, rgba(255, 255, 255, 0.15) 136.58%);
  box-shadow: 0 4px 49px 0 rgba(0, 7, 72, 0.12);
  backdrop-filter: blur(12.5px);
  transition: border-color 0.5s ease;
}
.featured-card.active img {
  border-color: #40CEE4;
}
.featured-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: rgba(12, 16, 51, 0.6);
  pointer-events: none;
  transition: opacity 0.4s;
}
.featured-card.bright::after,
.featured-card.active::after {
  opacity: 0;
}
.scroll-btn {
  flex-shrink: 0;
  width: 50px; height: 50px;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.06);
  color: var(--text-white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.3s;
}
.scroll-btn:hover { background: rgba(255,255,255,0.12); }

/* ===== ADVANTAGE ===== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.advantage-card {
  background: var(--card-glass);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 40px 28px;
  text-align: center;
  backdrop-filter: blur(16px);
  transition: transform 0.3s;
}
.advantage-card:hover { transform: translateY(-4px); }
.advantage-icon {
  width: 80px; height: 80px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.advantage-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.advantage-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ===== FEATURE ===== */
.feature { background: var(--bg-primary); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--card-border);
  background: var(--card-glass);
  backdrop-filter: blur(16px);
  transition: transform 0.3s;
}
.feature-card:hover { transform: translateY(-4px); }
.feature-card-img {
  height: 200px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-glass);
}
.feature-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.feature-card-body { padding: 20px; }
.feature-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 12px; }
.feature-card-body h3 { font-size: 18px; font-weight: 500; }

/* ===== DOWNLOAD ===== */
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.download-card {
  position: relative;
  background: var(--card-glass);
  border: 2px solid transparent;
  border-radius: 20px;
  padding: 36px 28px;
  backdrop-filter: blur(16px);
  text-align: center;
  transition: box-shadow 0.3s;
}
.download-card:hover {
  border: 2px solid transparent;
  background-image: linear-gradient(var(--bg-primary), var(--bg-primary)), linear-gradient(45deg, #40CEE4, #EACCF8, #6654F1);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  box-shadow: 0 4px 49px 0 rgba(0, 7, 72, 0.12);
}
.download-badge {
  position: absolute;
  top: 14px; left: 14px;
  background: var(--accent-purple);
  color: var(--text-white);
  padding: 3px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}
.download-card-icon { width: 80px; height: 80px; margin: 0 auto 16px; }
.download-card-icon img { width: 100%; height: 100%; object-fit: contain; }
.download-card h3 { font-size: 20px; font-weight: 500; margin-bottom: 8px; }
.download-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.download-specs { margin-bottom: 24px; }
.download-specs li {
  font-size: 13px;
  color: var(--text-muted);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.download-specs li:last-child { border-bottom: none; }
.download-action { width: 100%; justify-content: center; }

/* ===== MARKET ===== */
.market { background: var(--bg-primary); }
.market-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 36px;
  flex-wrap: wrap;
  justify-content: center;
}
.tab-btn {
  padding: 10px 28px;
  border-radius: var(--radius-lg);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.3);
  background: transparent;
  color: var(--text-white);
  cursor: pointer;
  transition: all 0.3s;
}
.tab-btn.active { background: var(--accent-purple); border-color: var(--accent-purple); }
.tab-btn:hover:not(.active) { background: rgba(255,255,255,0.06); }
.market-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}
.market-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--card-border);
  background: var(--card-glass);
  backdrop-filter: blur(16px);
  transition: transform 0.3s;
}
.market-card:hover { transform: translateY(-4px); }
.market-card-img { height: 200px; }
.market-card-body { padding: 14px 16px; }
.market-card-body h3 { font-size: 16px; font-weight: 600; margin-bottom: 3px; }
.market-card-body p { font-size: 12px; color: var(--text-muted); }
.market-more { text-align: center; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  border-radius: 20px;
  border: 1.5px solid rgba(255, 255, 255, 0.30);
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.00) -2.13%, rgba(255, 255, 255, 0.15) 136.58%);
  box-shadow: 0 4px 49px 0 rgba(0, 7, 72, 0.12);
  backdrop-filter: blur(12.5px);
}
.faq-item summary {
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  font-weight: 300;
  color: var(--text-muted);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { padding: 0 24px 20px; }
.faq-answer p { font-size: 14px; color: var(--text-muted); line-height: 1.8; }

/* ===== FOOTER ===== */
.footer {
  background: #0E1135;
  padding: 60px 0 30px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-top {
  text-align: center;
  margin-bottom: 40px;
}
.footer-site {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer-search {
  display: flex;
  max-width: 560px;
  margin: 0 auto;
}
.footer-search input {
  flex: 1;
  padding: 12px 18px;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.2);
  border-right: none;
  background: rgba(255,255,255,0.04);
  color: var(--text-white);
  font-size: 14px;
  outline: none;
}
.footer-search input::placeholder { color: var(--text-muted); }
.btn-search {
  padding: 12px 24px;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background: #000;
  color: var(--text-white);
  border: 1px solid rgba(255,255,255,0.2);
  border-left: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.footer-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 30px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  gap: 60px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 32px;
}
.footer-logo img { height: 28px; }
.footer-logo span { font-size: 18px; font-weight: 700; }
.footer-contact p { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.footer-nav h4 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.footer-nav ul { display: flex; flex-direction: column; gap: 8px; }
.footer-nav a { font-size: 14px; color: var(--text-muted); transition: color 0.3s; }
.footer-nav a:hover { color: var(--text-white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.footer-bottom p { font-size: 13px; color: var(--text-muted); }
.footer-beian-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.3s;
}
.footer-beian-link:hover { color: var(--text-white); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-layout { flex-direction: column; text-align: center; }
  .hero-left { flex: none; max-width: 100%; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-right { flex: none; width: 100%; max-width: 700px; }
  .hero-title { font-size: 52px; }
  .section-title { font-size: 36px; }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .market-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-title { font-size: 42px; }
  .hero-subtitle { font-size: 18px; }
  .section-title { font-size: 30px; margin-bottom: 36px; }
  .advantage-grid,
  .feature-grid,
  .download-grid { grid-template-columns: 1fr; }
  .market-grid { grid-template-columns: repeat(2, 1fr); }
  .container { padding: 0 20px; }
  .section { padding: 70px 0; }
  .footer-main { flex-direction: column; }
}
@media (max-width: 480px) {
  .market-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .featured-card { flex: 0 0 180px; }
}