/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",sans-serif;
  background:#0a0a0f;
  color:#d4c8a8;
  line-height:1.6;
  overflow-x:hidden;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:#0a0a0f}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#8b6914,#d4a843);border-radius:3px}

/* ===== Nav ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:12px 32px;display:flex;align-items:center;justify-content:space-between;
  transition:all .35s ease;
}
.nav.scrolled{
  background:rgba(10,10,15,.92);
  backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(180,140,60,.18);
  box-shadow:0 2px 30px rgba(0,0,0,.5);
}
.nav-logo{
  display:flex;align-items:center;gap:12px;
  text-decoration:none;color:#d4c8a8;
}
.nav-logo img{width:44px;height:44px;border-radius:10px;border:2px solid rgba(180,140,60,.4)}
.nav-logo span{font-size:1.25rem;font-weight:700;letter-spacing:2px;
  background:linear-gradient(180deg,#f0d68a,#b8942e);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.nav-links{display:flex;gap:28px;list-style:none;align-items:center}
.nav-links a{
  color:#b8a880;text-decoration:none;font-size:.9rem;letter-spacing:1px;
  position:relative;transition:color .3s;padding:4px 0;
}
.nav-links a::after{
  content:'';position:absolute;bottom:0;left:0;width:0;height:2px;
  background:linear-gradient(90deg,#8b6914,#d4a843);transition:width .3s;
}
.nav-links a:hover{color:#d4a843}
.nav-links a:hover::after{width:100%}
.nav-cta{
  padding:8px 22px;
  background:linear-gradient(135deg,#8b6914,#c4942a);
  color:#0a0a0f;border-radius:6px;font-weight:700;
  text-decoration:none;font-size:.85rem;letter-spacing:1px;
  transition:all .3s;box-shadow:0 0 20px rgba(180,140,60,.25);
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 0 35px rgba(180,140,60,.45)}
.menu-toggle{
  display:none;flex-direction:column;gap:5px;cursor:pointer;
  background:none;border:none;padding:4px;z-index:1001;
}
.menu-toggle span{
  width:26px;height:2px;background:#d4c8a8;border-radius:1px;
  transition:all .3s;
}
.menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
  overflow:hidden;padding:100px 32px 60px;
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
}
.hero-bg::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at center,rgba(20,15,30,.4) 0%,#0a0a0f 70%);
  z-index:1;
}
.hero-bg img{
  width:100%;height:100%;object-fit:cover;object-position:center;
  filter:brightness(.45)
}
.hero-particles{
  position:absolute;inset:0;z-index:1;overflow:hidden;
}
.particle{
  position:absolute;width:3px;height:3px;background:rgba(212,168,67,.6);
  border-radius:50%;animation:floatUp linear infinite;
}
@keyframes floatUp{
  0%{transform:translateY(100vh) scale(0);opacity:0}
  10%{opacity:1}
  90%{opacity:1}
  100%{transform:translateY(-10vh) scale(1.5);opacity:0}
}
.hero-content{
  position:relative;z-index:2;text-align:center;max-width:800px;
}
.hero-tag{
  display:inline-block;padding:6px 20px;margin-bottom:20px;
  border:1px solid rgba(212,168,67,.4);border-radius:30px;
  font-size:.8rem;letter-spacing:3px;color:#d4a843;
  background:rgba(180,140,60,.08);
  animation:fadeInDown .8s ease;
}
.hero-title{
  font-size:clamp(2.2rem,5vw,4rem);font-weight:900;
  letter-spacing:4px;margin-bottom:16px;
  background:linear-gradient(180deg,#f5e6b8 20%,#c4942a 60%,#8b6914 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  text-shadow:none;
  animation:fadeInUp .8s ease;
  filter:drop-shadow(0 2px 12px rgba(180,140,60,.35));
}
.hero-subtitle{
  font-size:clamp(1rem,2vw,1.3rem);color:#a09070;
  letter-spacing:2px;margin-bottom:10px;
  animation:fadeInUp .8s ease .1s both;
}
.hero-desc{
  font-size:.95rem;color:#807060;max-width:520px;margin:0 auto 40px;
  animation:fadeInUp .8s ease .2s both;
}
.hero-btns{
  display:flex;gap:16px;justify-content:center;align-items:center;flex-wrap:wrap;
  animation:fadeInUp .8s ease .3s both;
}
.btn-primary{
  padding:14px 42px;
  background:linear-gradient(135deg,#8b6914,#c4942a,#8b6914);
  background-size:200% 100%;
  color:#0a0a0f;font-weight:700;font-size:1.05rem;
  border:none;border-radius:8px;cursor:pointer;
  text-decoration:none;letter-spacing:2px;
  transition:all .4s;
  box-shadow:0 4px 30px rgba(180,140,60,.35);
  animation:shimmer 3s ease-in-out infinite;
}
.btn-primary:hover{
  transform:translateY(-3px);
  box-shadow:0 8px 45px rgba(180,140,60,.5);
}
@keyframes shimmer{
  0%,100%{background-position:0% 50%}
  50%{background-position:100% 50%}
}
.btn-ghost{
  padding:14px 42px;
  border:1.5px solid rgba(212,168,67,.5);
  color:#d4a843;font-weight:700;font-size:1.05rem;
  border-radius:8px;cursor:pointer;
  text-decoration:none;letter-spacing:2px;
  background:rgba(180,140,60,.06);
  transition:all .4s;
}
.btn-ghost:hover{
  background:rgba(180,140,60,.15);
  border-color:#d4a843;
  box-shadow:0 0 30px rgba(180,140,60,.2);
}

/* Hero QR Tooltip */
.hero-qr-wrap{position:relative;display:flex}
.qr-tooltip{
  position:absolute;bottom:calc(100% + 18px);left:50%;
  opacity:0;pointer-events:none;transition:opacity .3s ease,transform .3s ease;
  transform:translateX(-50%) translateY(8px);z-index:10;
}
.qr-tooltip.show{opacity:1;pointer-events:all;transform:translateX(-50%) translateY(0)}
.qr-tooltip-inner{
  background:linear-gradient(135deg,rgba(22,22,38,.97),rgba(16,16,30,.97));
  border:1px solid rgba(212,168,67,.35);border-radius:12px;
  padding:18px;text-align:center;
  box-shadow:0 8px 40px rgba(0,0,0,.5);
}
.qr-tooltip-inner canvas,
.qr-tooltip-inner img{display:block;width:150px!important;height:150px!important;margin:0 auto}
.qr-tooltip-inner p{font-size:.72rem;color:#807060;margin-top:10px;letter-spacing:1px}
.qr-tooltip-arrow{
  position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);
  width:0;height:0;
  border-left:8px solid transparent;border-right:8px solid transparent;
  border-top:8px solid rgba(212,168,67,.35);
}
@media(max-width:768px){
  .qr-tooltip{display:none!important}
}
.scroll-indicator{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);
  z-index:2;display:flex;flex-direction:column;align-items:center;
  gap:8px;animation:bounce 2s infinite;
}
.scroll-indicator span{font-size:.7rem;letter-spacing:2px;color:#807060}
.scroll-line{width:1px;height:40px;background:linear-gradient(180deg,rgba(180,140,60,.5),transparent)}
@keyframes bounce{
  0%,100%{transform:translateX(-50%) translateY(0)}
  50%{transform:translateX(-50%) translateY(10px)}
}
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes fadeInDown{
  from{opacity:0;transform:translateY(-20px)}
  to{opacity:1;transform:translateY(0)}
}

/* ===== Section Common ===== */
.section{padding:80px 32px;position:relative}
.section-header{text-align:center;margin-bottom:60px}
.section-tag{
  display:inline-block;padding:4px 16px;font-size:.75rem;
  letter-spacing:3px;color:#d4a843;
  border:1px solid rgba(212,168,67,.3);border-radius:20px;
  margin-bottom:16px;
}
.section-title{
  font-size:clamp(1.8rem,3.5vw,2.4rem);font-weight:900;
  letter-spacing:3px;margin-bottom:12px;
  background:linear-gradient(180deg,#f0d68a,#b8942e);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.section-line{
  width:60px;height:2px;margin:0 auto;
  background:linear-gradient(90deg,transparent,#d4a843,transparent);
}

/* ===== Features ===== */
#features{background:linear-gradient(180deg,#0a0a0f,#111122,#0a0a0f)}
.features-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:24px;max-width:1100px;margin:0 auto;
}
.feat-card{
  position:relative;padding:36px 28px;
  background:linear-gradient(135deg,rgba(20,20,35,.9),rgba(15,15,30,.7));
  border:1px solid rgba(180,140,60,.12);border-radius:12px;
  transition:all .4s;overflow:hidden;text-align:center;
}
.feat-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(180,140,60,.3),transparent);
  opacity:0;transition:opacity .4s;
}
.feat-card:hover{transform:translateY(-6px);border-color:rgba(180,140,60,.3);box-shadow:0 20px 40px rgba(0,0,0,.4)}
.feat-card:hover::before{opacity:1}
.feat-icon{
  width:70px;height:70px;margin:0 auto 20px;
  background:linear-gradient(135deg,rgba(180,140,60,.1),rgba(180,140,60,.05));
  border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:32px;border:1px solid rgba(180,140,60,.2);
}
.feat-card h3{
  font-size:1.15rem;color:#d4a843;margin-bottom:10px;letter-spacing:1px;
}
.feat-card p{font-size:.88rem;color:#807060;line-height:1.7}

/* ===== Screenshots ===== */
#screenshots{background:#0a0a0f}
.screenshot-showcase{
  position:relative;max-width:1000px;margin:0 auto;overflow:hidden;border-radius:16px;
  border:1px solid rgba(180,140,60,.15);box-shadow:0 20px 60px rgba(0,0,0,.5);
}
.screenshot-track{
  display:flex;transition:transform .5s cubic-bezier(.25,.46,.45,.94);
}
.screenshot-slide{
  min-width:100%;position:relative;
}
.screenshot-slide img{
  width:100%;display:block;border-radius:15px;
  aspect-ratio:16/9;object-fit:cover;
}
.screenshot-nav{
  display:flex;justify-content:center;gap:12px;margin-top:24px;
}
.screenshot-dot{
  width:12px;height:12px;border-radius:50%;cursor:pointer;
  background:rgba(180,140,60,.2);border:1px solid rgba(180,140,60,.3);
  transition:all .3s;
}
.screenshot-dot.active{background:#d4a843;box-shadow:0 0 12px rgba(212,168,67,.5)}
.screenshot-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:44px;height:44px;border-radius:50%;cursor:pointer;
  background:rgba(10,10,15,.7);border:1px solid rgba(180,140,60,.3);
  color:#d4a843;font-size:1.2rem;display:flex;align-items:center;
  justify-content:center;transition:all .3s;
}
.screenshot-arrow:hover{background:rgba(180,140,60,.15)}
.screenshot-arrow.prev{left:12px}
.screenshot-arrow.next{right:12px}
.thumb-strip{
  display:flex;gap:10px;justify-content:center;margin-top:20px;
  flex-wrap:wrap;max-width:1000px;margin-left:auto;margin-right:auto;
}
.thumb-strip img{
  width:100px;height:56px;object-fit:cover;border-radius:6px;
  cursor:pointer;border:2px solid transparent;transition:all .3s;
  opacity:.5;
}
.thumb-strip img:hover,.thumb-strip img.active{opacity:1;border-color:#d4a843}

/* ===== Benefits ===== */
#benefits{
  background:linear-gradient(180deg,#0a0a0f,#111122);
  position:relative;overflow:hidden;
}
#benefits::before{
  content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:1px;height:100%;background:linear-gradient(180deg,transparent,rgba(180,140,60,.1),transparent);
}
.benefits-container{max-width:900px;margin:0 auto;position:relative;z-index:1}
.benefit-item{
  display:flex;gap:24px;padding:28px 32px;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(20,20,35,.8),rgba(15,15,30,.5));
  border:1px solid rgba(180,140,60,.1);border-radius:12px;
  transition:all .3s;align-items:flex-start;
}
.benefit-item:hover{
  border-color:rgba(180,140,60,.25);
  background:linear-gradient(135deg,rgba(25,25,40,.9),rgba(18,18,35,.6));
  transform:translateX(6px);
}
.benefit-star{
  flex-shrink:0;width:36px;height:36px;
  background:linear-gradient(135deg,rgba(180,140,60,.2),rgba(180,140,60,.05));
  border-radius:8px;display:flex;align-items:center;justify-content:center;
  font-size:1.2rem;border:1px solid rgba(180,140,60,.3);
}
.benefit-item h4{font-size:.95rem;color:#d4a843;margin-bottom:4px;letter-spacing:1px}
.benefit-item p{font-size:.85rem;color:#807060;line-height:1.6}
.benefit-highlight{
  display:inline-block;padding:2px 10px;
  background:linear-gradient(135deg,rgba(212,80,60,.2),rgba(212,80,60,.05));
  border:1px solid rgba(212,80,60,.3);border-radius:4px;
  color:#e08060;font-size:.78rem;font-weight:700;margin:0 2px;
}

/* ===== Gallery Carousel ===== */
#gallery{background:#0a0a0f}
.gallery-carousel{
  position:relative;max-width:900px;margin:0 auto;
}
.gallery-viewport{overflow:hidden;border-radius:16px;border:1px solid rgba(180,140,60,.12)}
.gallery-track{
  display:flex;transition:transform .5s cubic-bezier(.25,.46,.45,.94);
}
.gallery-slide{
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
  min-width:100%;padding:0;
}
.gallery-card{
  position:relative;border-radius:10px;overflow:hidden;cursor:pointer;
  aspect-ratio:9/16;border:1px solid rgba(180,140,60,.08);
  transition:all .35s;
}
.gallery-card img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.gallery-card:hover{transform:translateY(-4px);border-color:rgba(180,140,60,.35);box-shadow:0 8px 30px rgba(0,0,0,.5)}
.gallery-card:hover img{transform:scale(1.05)}
.gallery-card::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 60%,rgba(10,10,15,.5));
  opacity:0;transition:opacity .4s;
}
.gallery-card:hover::after{opacity:1}
.gallery-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:42px;height:42px;border-radius:50%;cursor:pointer;
  background:rgba(10,10,15,.75);border:1px solid rgba(180,140,60,.25);
  color:#d4a843;font-size:1.1rem;display:flex;align-items:center;
  justify-content:center;transition:all .3s;
}
.gallery-arrow:hover{background:rgba(180,140,60,.15);border-color:#d4a843}
.gallery-arrow.prev{left:-52px}
.gallery-arrow.next{right:-52px}
.gallery-dots{
  display:flex;justify-content:center;gap:10px;margin-top:20px;
}
.gallery-dot{
  width:10px;height:10px;border-radius:50%;cursor:pointer;
  background:rgba(180,140,60,.18);border:1px solid rgba(180,140,60,.25);
  transition:all .3s;
}
.gallery-dot.active{background:#d4a843;box-shadow:0 0 10px rgba(212,168,67,.45)}
@media(max-width:768px){
  .gallery-slide{grid-template-columns:repeat(2,1fr);gap:8px}
  .gallery-arrow.prev{left:8px}
  .gallery-arrow.next{right:8px}
  .gallery-arrow{width:34px;height:34px;font-size:.9rem}
}

/* ===== About & Download ===== */
#download{
  background:linear-gradient(180deg,#111122,#0a0a0f);
  position:relative;overflow:hidden;
}
.download-wrapper{
  max-width:700px;margin:0 auto;text-align:center;position:relative;z-index:1;
}
.about-text{
  font-size:.95rem;color:#807060;line-height:2;margin-bottom:40px;
  max-width:600px;margin-left:auto;margin-right:auto;
}
.download-card{
  padding:48px 40px;
  background:linear-gradient(135deg,rgba(20,20,40,.95),rgba(12,12,28,.9));
  border:1px solid rgba(180,140,60,.2);border-radius:16px;
  position:relative;overflow:hidden;
}
.download-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(180,140,60,.5),transparent);
}
.download-card h3{font-size:1.5rem;color:#d4a843;margin-bottom:8px;letter-spacing:2px}
.download-meta{
  display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin:24px 0;
}
.meta-item{text-align:center}
.meta-item .label{font-size:.75rem;color:#605040;letter-spacing:1px;margin-bottom:4px}
.meta-item .value{font-size:.9rem;color:#a09070;font-weight:600}
.download-btns{
  display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:20px;
}
.download-btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 40px;
  background:linear-gradient(135deg,#8b6914,#c4942a);
  color:#0a0a0f;font-weight:800;font-size:1.05rem;
  border:none;border-radius:10px;cursor:pointer;
  text-decoration:none;letter-spacing:2px;
  transition:all .4s;
  box-shadow:0 6px 35px rgba(180,140,60,.3);
}
.download-btn:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 50px rgba(180,140,60,.5);
}
.download-btn.android{background:linear-gradient(135deg,#3ddc84,#00c853)}
.download-btn.android:hover{box-shadow:0 12px 50px rgba(61,220,132,.5)}
.download-btn.ios{background:linear-gradient(135deg,#007aff,#5856d6);color:#fff}
.download-btn.ios:hover{box-shadow:0 12px 50px rgba(0,122,255,.5)}
.download-btn .btn-icon{font-size:1.4rem;line-height:1}
.download-qr{
  display:flex;justify-content:center;margin-top:24px;
}
.download-qr canvas,
.download-qr img{display:block;width:150px!important;height:150px!important;
  border-radius:10px;border:2px solid rgba(180,140,60,.2);padding:6px;
  background:#fff;
}
.download-qr-text{font-size:.75rem;color:#605040;margin-top:8px;letter-spacing:1px}
.download-hint{font-size:.78rem;color:#605040;margin-top:12px}

/* ===== Back to Top ===== */
.back-to-top{
  position:fixed;bottom:32px;right:32px;z-index:998;
  width:44px;height:44px;border-radius:50%;cursor:pointer;
  background:linear-gradient(135deg,rgba(139,105,20,.85),rgba(196,148,42,.85));
  border:1px solid rgba(212,168,67,.4);
  color:#0a0a0f;font-size:1.1rem;
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;
  transform:translateY(20px);
  transition:all .35s ease;
  box-shadow:0 4px 25px rgba(180,140,60,.3);
}
.back-to-top.visible{
  opacity:1;pointer-events:all;
  transform:translateY(0);
}
.back-to-top:hover{
  transform:translateY(-4px);
  box-shadow:0 8px 35px rgba(180,140,60,.5);
}
@media(max-width:768px){
  .back-to-top{bottom:20px;right:20px;width:40px;height:40px;font-size:1rem}
}

/* ===== Friend Links ===== */
.friend-links{
  margin-bottom:24px;font-size:.78rem;color:#504030;
  text-align:center;letter-spacing:1px;
}
.friend-links a{
  color:#706050;text-decoration:none;transition:color .3s;
}
.friend-links a:hover{color:#d4a843}


/* ===== Footer ===== */
.footer{
  padding:40px 32px;text-align:center;
  border-top:1px solid rgba(180,140,60,.08);
  background:#0a0a0f;
}
.footer p{font-size:.78rem;color:#504030;letter-spacing:1px}

/* ===== Lightbox ===== */
.lightbox{
  position:fixed;inset:0;z-index:9999;
  background:rgba(0,0,0,.92);display:flex;align-items:center;
  justify-content:center;opacity:0;pointer-events:none;
  transition:opacity .3s;
}
.lightbox.active{opacity:1;pointer-events:all}
.lightbox img{
  max-width:90vw;max-height:85vh;border-radius:8px;
  box-shadow:0 20px 60px rgba(0,0,0,.6);
}
.lightbox-close{
  position:absolute;top:20px;right:30px;font-size:2rem;
  color:#d4c8a8;cursor:pointer;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border-radius:50%;
  transition:all .3s;
}
.lightbox-close:hover{background:rgba(255,255,255,.15)}

/* ===== Mobile Nav ===== */
@media(max-width:768px){
  .nav-links{
    position:fixed;inset:0;background:rgba(10,10,15,.97);
    flex-direction:column;justify-content:center;
    align-items:center;gap:32px;
    opacity:0;pointer-events:none;transition:opacity .4s;
    z-index:999;
  }
  .nav-links.active{opacity:1;pointer-events:all}
  .menu-toggle{display:flex}
  .section{padding:60px 20px}
  .hero{padding:80px 20px 50px}
  .hero-btns{flex-direction:column;align-items:center}
  .benefit-item{flex-direction:column;gap:12px;padding:20px}
  .download-card{padding:32px 20px}
  .screenshot-arrow{width:36px;height:36px;font-size:1rem}
}

/* ===== Animations on scroll ===== */
.reveal{
  opacity:0;transform:translateY(30px);
  transition:all .7s cubic-bezier(.25,.46,.45,.94);
}
.reveal.visible{opacity:1;transform:translateY(0)}