*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', Helvetica, Arial, sans-serif;
}
body{
  background: #0b0f17;
  background-image: radial-gradient(circle at 20% 30%, rgba(0, 180, 255, 0.08) 0%, transparent 40%),
                    radial-gradient(circle at 90% 70%, rgba(160, 0, 255, 0.06) 0%, transparent 45%);
  color: #e9f1fc;
  line-height: 1.5;
  padding-bottom: 2rem;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}
img{ max-width: 100%; height: auto; }
.container{
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.navbar{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0 0.8rem;
  border-bottom: 1px solid rgba(64, 164, 255, 0.15);
  flex-wrap: wrap;
  gap: 0.8rem;
}
.logo-area{
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-area img{
  height: 36px;
  width: auto;
  border-radius: 8px;
  object-fit: contain;
  display: block;
}
.logo-text .brand-title{
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #ffffff, #7ac9ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}
.logo-text .badge{
  font-size: 0.75rem;
  background: #1d9bf0;
  color: #001424;
  font-weight: 700;
  padding: 0.15rem 0.6rem;
  border-radius: 20px;
  display: inline-block;
  margin-left: 8px;
  vertical-align: middle;
  box-shadow: 0 0 15px #1d9bf0;
}
.logo-text .tagline{
  font-size: 0.8rem;
  color: #7f9fc7;
}
.nav-links{
  display: flex;
  gap: 1.6rem;
  font-weight: 500;
  align-items: center;
  flex-wrap: wrap;
}
.nav-links a{
  color: #cbd5e6;
  text-decoration: none;
  font-size: 0.98rem;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
}
.nav-links a:hover{
  color: #69c6ff;
  border-bottom-color: #69c6ff;
}
.download-btn-nav{
  background: linear-gradient(135deg, #0066ff, #00a6ff);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
  font-weight: 700;
  padding: 0.6rem 1.4rem;
  border-radius: 30px;
  font-size: 0.95rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 0 20px rgba(0, 120, 255, 0.5);
  transition: transform 0.1s, box-shadow 0.2s;
  white-space: nowrap;
}
.download-btn-nav:hover{
  transform: scale(1.02);
  box-shadow: 0 0 30px #0088ff;
}
.hero-banner{
  margin: 2rem 0;
  border-radius: 36px;
  overflow: hidden;
  box-shadow: 0 25px 40px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(0, 160, 255, 0.3);
  position: relative;
}
.hero-banner .hero-main{
  width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 8;
}
.hero-banner .banner-overlay{
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 15, 30, 0.96) 0%, rgba(0, 15, 30, 0.55) 55%, transparent 100%);
  padding: 2rem 2rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.banner-text{ max-width: 640px; }
.banner-text h1{
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0,0,0,0.8);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}
.banner-text p{
  color: #b8d6f0;
  font-size: 1rem;
  text-shadow: 0 1px 6px #000;
}
.banner-btn{
  background: linear-gradient(135deg, #0066ff, #00b2ff);
  border: 1px solid rgba(255,255,255,0.4);
  color: white;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: 60px;
  font-size: 1.08rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 0 30px rgba(0, 150, 255, 0.7);
  transition: all 0.2s;
  white-space: nowrap;
}
.banner-btn:hover{
  transform: scale(1.03);
  box-shadow: 0 0 45px #00a2ff;
}
.section-title{
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title span{
  background: linear-gradient(135deg, #00b2ff, #ae7dff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.section-sub{
  color: #8ba0bb;
  font-size: 1rem;
  margin-bottom: 2rem;
  border-left: 4px solid #00a6ff;
  padding-left: 1rem;
}
.feature-showcase{
  display: flex;
  flex-direction: column;
  gap: 3rem;
  margin-bottom: 3.5rem;
}
.feature-row{
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.feature-row.reverse{ flex-direction: row-reverse; }
.feature-row .feature-text{ flex: 1 1 300px; }
.feature-row .feature-img{
  flex: 1 1 320px;
  display: flex;
  justify-content: center;
}
.feature-row .feature-img img{
  width: 100%;
  max-width: 460px;
  border-radius: 26px;
  border: 1px solid rgba(0, 160, 255, 0.4);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.7);
  object-fit: cover;
  aspect-ratio: 16 / 10;
  transition: all 0.25s;
}
.feature-row .feature-img img:hover{
  transform: scale(1.02);
  border-color: #3a9eff;
  box-shadow: 0 0 35px rgba(0, 150, 255, 0.6);
}
.feature-text h3{
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff, #9ad4ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.feature-text p{
  color: #a3b8d0;
  font-size: 1.02rem;
  line-height: 1.75;
  margin-bottom: 1.2rem;
}
.feature-text .pill{
  background: #1d3f5e;
  padding: 0.25rem 1rem;
  border-radius: 40px;
  color: #aad0ff;
  font-size: 0.82rem;
  display: inline-block;
}
.features-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.8rem;
  margin-bottom: 3.5rem;
}
.feature-card{
  background: rgba(16, 26, 40, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(60, 130, 210, 0.3);
  border-radius: 26px;
  padding: 1.8rem 1.5rem;
  transition: all 0.25s;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}
.feature-card:hover{
  border-color: #3a9eff;
  box-shadow: 0 0 30px rgba(0, 150, 255, 0.3);
  transform: translateY(-4px);
  background: rgba(22, 38, 60, 0.8);
}
.feature-icon{
  width: 55px;
  height: 55px;
  background: linear-gradient(145deg, #0f2b47, #003366);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.3rem;
  border: 1px solid #2a7fbf;
  font-size: 1.8rem;
}
.feature-card h3{
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: #e2f0ff;
}
.feature-card p{
  color: #97aec9;
  font-size: 0.95rem;
  line-height: 1.65;
}
.gallery-section{ margin-bottom: 3.5rem; }
.marquee-wrapper{
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 24px;
  mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
  padding: 0.5rem 0;
}
.marquee-track{
  display: flex;
  gap: 1.2rem;
  width: max-content;
  animation: marqueeScroll 38s linear infinite;
  will-change: transform;
}
.marquee-wrapper:hover .marquee-track{ animation-play-state: paused; }
.marquee-track img{
  width: 180px;
  height: 320px;
  flex-shrink: 0;
  object-fit: cover;
  border-radius: 18px;
  border: 1px solid #1f4a70;
  background: #0b1420;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.6);
  transition: all 0.25s;
}
.marquee-track img:hover{
  border-color: #4da6ff;
  box-shadow: 0 0 28px #0077ff;
  transform: scale(1.03);
}
@keyframes marqueeScroll{
  0%{ transform: translateX(0); }
  100%{ transform: translateX(-50%); }
}
.history-versions{
  background: rgba(10, 20, 35, 0.8);
  border-radius: 30px;
  padding: 2rem;
  border: 1px solid #1e476b;
  margin-bottom: 3.5rem;
}
.history-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.history-card{
  background: #0e1a28;
  border-radius: 20px;
  padding: 1.5rem 1.2rem;
  border: 1px solid #1f405e;
  text-align: center;
  transition: all 0.2s;
}
.history-card:hover{
  border-color: #3a9eff;
  box-shadow: 0 0 25px rgba(0, 150, 255, 0.2);
}
.history-card .version-name{
  font-size: 1.25rem;
  font-weight: 800;
  color: #8fc9ff;
  margin-bottom: 0.5rem;
}
.history-card .version-date{
  font-size: 0.85rem;
  color: #6f8fae;
  margin-bottom: 1rem;
}
.history-card .version-btn{
  display: inline-block;
  background: rgba(0, 102, 255, 0.2);
  border: 1px solid #2a6db0;
  color: #b8dcff;
  padding: 0.5rem 1.5rem;
  border-radius: 40px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s;
}
.history-card .version-btn:hover{
  background: #0066ff;
  color: #fff;
  border-color: #0066ff;
  box-shadow: 0 0 15px #0066ff;
}
.tutorial-section{ margin-bottom: 3.5rem; }
.tutorial-steps{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.8rem;
  margin-top: 1.5rem;
}
.step-card{
  background: rgba(16, 30, 48, 0.7);
  border-radius: 24px;
  padding: 1.8rem 1.5rem;
  border: 1px solid #1f4765;
}
.step-card .step-num{
  font-size: 2.4rem;
  font-weight: 900;
  color: #1d5c8f;
  margin-bottom: 0.4rem;
}
.step-card h4{
  font-size: 1.18rem;
  color: #c3e0ff;
  margin-bottom: 0.7rem;
}
.step-card p{
  color: #8faac7;
  font-size: 0.95rem;
  line-height: 1.65;
}
.reviews-section{ margin-bottom: 3.5rem; }
.reviews-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
  margin-top: 1.5rem;
}
.review-card{
  background: rgba(20, 32, 50, 0.7);
  border-radius: 24px;
  padding: 1.8rem 1.5rem;
  border: 1px solid #1f405e;
  transition: all 0.2s;
}
.review-card:hover{
  border-color: #3a9eff;
  box-shadow: 0 0 25px rgba(0, 150, 255, 0.2);
}
.review-header{
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}
.review-avatar{
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(145deg, #1e3f5e, #0b1f33);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  border: 1px solid #2a6db0;
}
.review-name{
  font-weight: 700;
  color: #d4e9ff;
}
.review-stars{
  color: #ffb347;
  font-size: 0.9rem;
  letter-spacing: 2px;
}
.review-text{
  color: #a8c2dd;
  font-size: 0.95rem;
  line-height: 1.65;
}
.faq-section{ margin-bottom: 3.5rem; }
.faq-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.faq-card{
  background: rgba(18, 30, 46, 0.8);
  border-radius: 22px;
  padding: 1.5rem 1.8rem;
  border: 1px solid #1f405e;
  transition: all 0.2s;
}
.faq-card:hover{
  border-color: #3a9eff;
  box-shadow: 0 0 25px rgba(0, 150, 255, 0.15);
}
.faq-card h4{
  font-size: 1.1rem;
  color: #b6dbff;
  margin-bottom: 0.7rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.faq-card p{
  color: #90a9c5;
  font-size: 0.95rem;
  line-height: 1.65;
}
.download-section{
  background: linear-gradient(145deg, #0b1b2c, #07101c);
  border-radius: 44px;
  padding: 3rem 2.5rem;
  border: 1px solid #1d5c8f;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3rem;
  box-shadow: 0 20px 35px rgba(0, 0, 0, 0.7);
}
.download-text{ max-width: 560px; }
.download-text h2{
  font-size: 2.1rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
  line-height: 1.3;
}
.download-text p{
  color: #a2bedb;
}
.download-big-btn{
  background: linear-gradient(135deg, #0066ff, #00b2ff);
  padding: 1.15rem 2.8rem;
  border-radius: 60px;
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
  color: white;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 0 40px #0066ff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all 0.2s;
  white-space: nowrap;
}
.download-big-btn:hover{
  transform: scale(1.02);
  box-shadow: 0 0 55px #00a2ff;
}
.related-searches{
  margin: 2rem 0;
  padding: 1.8rem 2rem;
  background: rgba(12, 24, 40, 0.7);
  border-radius: 26px;
  border: 1px solid #1b3b58;
}
.related-title{
  font-size: 1.05rem;
  font-weight: 600;
  color: #9bb9da;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.search-tags{
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}
.search-tags a{
  background: #102b42;
  color: #b3d4ff;
  padding: 0.4rem 1.1rem;
  border-radius: 40px;
  font-size: 0.88rem;
  text-decoration: none;
  border: 1px solid #1f4a70;
  transition: all 0.2s;
}
.search-tags a:hover{
  background: #1d5c8f;
  color: #fff;
  border-color: #3a9eff;
  box-shadow: 0 0 15px rgba(0, 150, 255, 0.4);
}
.footer{
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(60, 130, 200, 0.2);
  color: #6a85a3;
  font-size: 0.88rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.footer a{
  color: #6fa6dc;
  text-decoration: none;
}
.footer a:hover{ color: #9fd0ff; }
.footer .update-time{
  font-size: 0.82rem;
  color: #527a9e;
  background: #0c1c2c;
  padding: 0.3rem 1rem;
  border-radius: 30px;
  border: 1px solid #1e3b53;
}
@media (max-width: 1024px){
  .banner-text h1{ font-size: 1.6rem; }
  .section-title{ font-size: 1.7rem; }
  .download-text h2{ font-size: 1.8rem; }
}
@media (max-width: 768px){
  .navbar{
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-links{
    gap: 1rem;
    width: 100%;
    justify-content: flex-start;
  }
  .nav-links a{ font-size: 0.9rem; }
  .download-btn-nav{
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
  }
  .hero-banner{ border-radius: 24px; }
  .hero-banner .hero-main{ aspect-ratio: 4 / 3; }
  .hero-banner .banner-overlay{
    flex-direction: column;
    align-items: flex-start;
    padding: 1.2rem;
    background: linear-gradient(to top, rgba(0, 15, 30, 0.98) 0%, rgba(0, 15, 30, 0.8) 70%, rgba(0,15,30,0.2) 100%);
  }
  .banner-text h1{ font-size: 1.3rem; }
  .banner-text p{ font-size: 0.85rem; }
  .banner-btn{
    font-size: 0.9rem;
    padding: 0.6rem 1.4rem;
  }
  .section-title{ font-size: 1.5rem; }
  .section-sub{ font-size: 0.9rem; }
  .feature-row{
    flex-direction: column !important;
    gap: 1.5rem;
  }
  .feature-row .feature-text h3{ font-size: 1.4rem; }
  .feature-row .feature-text p{ font-size: 0.95rem; }
  .feature-row .feature-img img{ max-width: 100%; }
  .features-grid{ grid-template-columns: 1fr; }
  .marquee-track img{ width: 140px; height: 250px; }
  .history-grid{ grid-template-columns: 1fr 1fr; }
  .tutorial-steps{ grid-template-columns: 1fr; }
  .reviews-grid{ grid-template-columns: 1fr; }
  .faq-grid{ grid-template-columns: 1fr; }
  .download-section{
    flex-direction: column;
    text-align: center;
    padding: 2rem 1.5rem;
    border-radius: 30px;
  }
  .download-text h2{ font-size: 1.55rem; }
  .download-big-btn{
    width: 100%;
    justify-content: center;
    padding: 1rem 1.5rem;
    font-size: 1.05rem;
  }
  .related-searches{ padding: 1.2rem; }
  .search-tags a{
    font-size: 0.8rem;
    padding: 0.3rem 0.9rem;
  }
  .footer{
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }
}
@media (max-width: 480px){
  .container{ padding: 0 1rem; }
  .logo-text .brand-title{ font-size: 1.2rem; }
  .logo-text .badge{
    font-size: 0.65rem;
    padding: 0.1rem 0.45rem;
  }
  .logo-area img{ height: 30px; }
  .banner-text h1{ font-size: 1.15rem; }
  .banner-text p{ font-size: 0.78rem; }
  .banner-btn{
    font-size: 0.82rem;
    padding: 0.5rem 1.1rem;
  }
  .marquee-track img{ width: 112px; height: 198px; }
  .history-grid{ grid-template-columns: 1fr; }
  .step-card .step-num{ font-size: 2rem; }
  .download-text h2{ font-size: 1.3rem; }
}
section, .download-section, .related-searches{ scroll-margin-top: 20px; }