*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --orange:#FF6B00;--orange-light:#FF8533;--orange-dark:#E55A00;
  --orange-glow:rgba(255,107,0,0.15);--orange-glow-strong:rgba(255,107,0,0.3);
  --dark:#1a1a2e;--darker:#111827;--gray:#374151;
  --light-gray:#9CA3AF;--white:#FFFFFF;--offwhite:#F9FAFB;
  --border:#2D2D44;--card-bg:#16213E;--section-alt:#0F0F23;
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--dark);color:var(--white);line-height:1.7;overflow-x:hidden;
  -webkit-font-smoothing:antialiased
}
a{color:var(--orange);text-decoration:none;transition:color .3s}
a:hover{color:var(--orange-light)}
ul{list-style:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:80px 0}
.section-alt{background:var(--section-alt)}
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(26,26,46,0.92);backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,107,0,0.12);transition:background .3s;
}
.navbar.scrolled{background:rgba(26,26,46,0.98)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.3rem;font-weight:700;color:var(--white)}
.nav-logo img{height:40px;width:auto}
.nav-logo .logo-text span{color:var(--orange)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{color:var(--light-gray);font-size:.9rem;transition:color .3s;position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--orange);transition:width .3s}
.nav-links a:hover{color:var(--white)}
.nav-links a:hover::after{width:100%}
.nav-cta{
  background:linear-gradient(135deg,var(--orange),var(--orange-dark));
  color:var(--white) !important;padding:8px 22px;border-radius:50px;
  font-size:.85rem !important;font-weight:600;
  box-shadow:0 4px 15px var(--orange-glow-strong);transition:transform .2s,box-shadow .2s !important;
}
.nav-cta::after{display:none !important}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 6px 24px var(--orange-glow-strong) !important}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none}
.hamburger span{width:24px;height:2px;background:var(--white);transition:all .3s;border-radius:2px}
.mobile-menu{
  display:none;position:fixed;top:64px;left:0;right:0;
  background:rgba(26,26,46,0.98);backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,107,0,0.15);padding:20px;z-index:999;
}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:12px 0;color:var(--light-gray);border-bottom:1px solid var(--border);font-size:.95rem}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu .nav-cta-mobile{
  display:inline-block;margin-top:16px;
  background:linear-gradient(135deg,var(--orange),var(--orange-dark));
  color:var(--white);padding:10px 28px;border-radius:50px;
  font-weight:600;font-size:.9rem;box-shadow:0 4px 15px var(--orange-glow-strong);
}
.hero{
  min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;
  background:radial-gradient(ellipse at 50% 0%,rgba(255,107,0,0.08) 0%,transparent 70%);padding-top:64px;
}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,107,0,0.04) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,107,0,0.04) 1px,transparent 1px);background-size:60px 60px;
}
.hero-glow{
  position:absolute;top:-20%;left:50%;transform:translateX(-50%);
  width:800px;height:800px;background:radial-gradient(circle,rgba(255,107,0,0.07) 0%,transparent 70%);border-radius:50%;
}
.hero .container{position:relative;z-index:2;text-align:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,107,0,0.1);border:1px solid rgba(255,107,0,0.3);
  color:var(--orange);padding:6px 18px;border-radius:50px;
  font-size:.8rem;font-weight:600;margin-bottom:28px;letter-spacing:1px;text-transform:uppercase;
}
.hero-badge .dot{width:6px;height:6px;background:var(--orange);border-radius:50%;animation:pulse 2s infinite}
.hero-logo-img{max-width:150px;height:auto;margin:0 auto 28px;border-radius:16px}
.hero-title{
  font-size:clamp(2.2rem,5.5vw,4rem);font-weight:800;line-height:1.15;margin-bottom:20px;
  background:linear-gradient(135deg,#fff 40%,rgba(255,255,255,0.6));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero-title .highlight{background:linear-gradient(135deg,var(--orange),var(--orange-light));-webkit-background-clip:text;background-clip:text}
.hero-subtitle{font-size:clamp(1rem,2vw,1.2rem);color:var(--light-gray);max-width:680px;margin:0 auto 40px;line-height:1.8}
.hero-stats{display:flex;justify-content:center;gap:48px;margin-bottom:40px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat .num{font-size:2rem;font-weight:800;color:var(--orange);display:block}
.hero-stat .label{font-size:.8rem;color:var(--light-gray)}
.hero-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:50px}
.btn-download{
  display:inline-flex;align-items:center;gap:10px;justify-content:center;
  color:var(--white);padding:14px 28px;border-radius:50px;
  font-size:.92rem;font-weight:700;
  box-shadow:0 8px 30px rgba(0,0,0,0.35);transition:all .3s;border:none;cursor:pointer;
  min-width:200px;text-align:center;letter-spacing:.5px;
}
.btn-download:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,0.45);color:var(--white)}
.btn-win{background:linear-gradient(135deg,var(--orange),var(--orange-dark))}
.btn-apple{background:linear-gradient(135deg,var(--orange),var(--orange-dark))}
.btn-intel{background:linear-gradient(135deg,var(--orange),var(--orange-dark))}
.btn-download svg{flex-shrink:0}
.btn-secondary{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,0.06);color:var(--white);padding:14px 36px;border-radius:50px;
  font-size:1rem;font-weight:600;border:1px solid rgba(255,255,255,0.15);transition:all .3s;cursor:pointer;
}
.btn-secondary:hover{background:rgba(255,255,255,0.12);border-color:rgba(255,107,0,0.4);color:var(--white)}
.hero-scroll{display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--light-gray);font-size:.8rem;animation:float 3s ease-in-out infinite}
.hero-scroll svg{opacity:.5}
.section-header{text-align:center;margin-bottom:60px}
.section-tag{
  display:inline-block;background:rgba(255,107,0,0.1);border:1px solid rgba(255,107,0,0.25);
  color:var(--orange);padding:4px 16px;border-radius:50px;
  font-size:.78rem;font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-bottom:16px;
}
.section-title{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;margin-bottom:16px}
.section-desc{font-size:1rem;color:var(--light-gray);max-width:600px;margin:0 auto}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.07);
  border-radius:20px;padding:36px 28px;transition:all .35s;position:relative;overflow:hidden;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--orange),var(--orange-light));opacity:0;transition:opacity .35s;
}
.feature-card:hover{background:rgba(255,107,0,0.06);border-color:rgba(255,107,0,0.25);transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,0.3)}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;margin-bottom:20px;background:rgba(255,107,0,0.1);border:1px solid rgba(255,107,0,0.2);
}
.feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:12px}
.feature-card p{color:var(--light-gray);font-size:.9rem;line-height:1.7}
.platforms-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.platform-card{
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.07);
  border-radius:16px;padding:28px 16px;text-align:center;transition:all .3s;
}
.platform-card:hover{background:rgba(255,107,0,0.07);border-color:rgba(255,107,0,0.3);transform:translateY(-4px)}
.platform-icon{
  width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  margin:0 auto 12px;font-size:1.5rem;background:rgba(255,107,0,0.1);
}
.platform-card h4{font-size:.9rem;font-weight:600;margin-bottom:4px}
.platform-card p{font-size:.75rem;color:var(--light-gray)}
.models-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.model-card{
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.07);
  border-radius:20px;padding:32px 24px;transition:all .35s;position:relative;overflow:hidden;
}
.model-card:hover{background:rgba(255,107,0,0.05);border-color:rgba(255,107,0,0.25);transform:translateY(-4px)}
.model-card .provider{font-size:.75rem;color:var(--orange);font-weight:600;text-transform:uppercase;letter-spacing:1px;margin-bottom:6px}
.model-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.model-card .desc{font-size:.82rem;color:var(--light-gray);margin-bottom:16px;line-height:1.6}
.model-card .models-list{font-size:.78rem;color:rgba(255,255,255,0.55);line-height:1.8}
.model-card .models-list span{display:block;padding-left:10px;border-left:2px solid rgba(255,107,0,0.4)}
.model-badge{
  position:absolute;top:16px;right:16px;
  background:rgba(255,107,0,0.12);border:1px solid rgba(255,107,0,0.25);
  color:var(--orange);font-size:.65rem;padding:2px 8px;border-radius:50px;font-weight:600;
}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;position:relative}
.steps-grid::before{
  content:'';position:absolute;top:40px;left:15%;right:15%;height:2px;
  background:linear-gradient(90deg,var(--orange),var(--orange-light),var(--orange));opacity:.3;
}
.step-card{text-align:center;position:relative}
.step-num{
  width:80px;height:80px;border-radius:50%;
  background:linear-gradient(135deg,var(--orange),var(--orange-dark));
  display:flex;align-items:center;justify-content:center;
  font-size:1.8rem;font-weight:800;margin:0 auto 24px;
  box-shadow:0 8px 30px rgba(255,107,0,0.35);position:relative;z-index:2;
}
.step-card h3{font-size:1.2rem;font-weight:700;margin-bottom:10px}
.step-card p{color:var(--light-gray);font-size:.88rem;max-width:280px;margin:0 auto}
.step-download{margin-top:20px;display:flex;flex-direction:column;gap:10px;align-items:center}
.step-download a{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  background:linear-gradient(135deg,var(--orange),var(--orange-dark));color:#fff;
  padding:10px 24px;border-radius:50px;font-size:.82rem;font-weight:600;
  box-shadow:0 4px 15px rgba(255,107,0,0.3);transition:all .25s;white-space:nowrap;width:100%;
}
.step-download a:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,107,0,0.4);color:#fff}
.step-download a svg{flex-shrink:0}
.cta-section{
  background:linear-gradient(135deg,rgba(255,107,0,0.12),rgba(255,107,0,0.05));
  border:1px solid rgba(255,107,0,0.2);border-radius:32px;padding:80px 40px;text-align:center;
  position:relative;overflow:hidden;
}
.cta-section::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse at 50% 0%,rgba(255,107,0,0.1) 0%,transparent 60%);
}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:800;margin-bottom:16px}
.cta-section p{color:var(--light-gray);font-size:1rem;margin-bottom:36px;max-width:500px;margin-left:auto;margin-right:auto}
.cta-tokens{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,107,0,0.15);border:1px solid rgba(255,107,0,0.3);
  color:var(--orange);padding:8px 24px;border-radius:50px;
  font-size:.9rem;font-weight:600;margin-bottom:32px;
}
.cta-tokens svg{width:18px;height:18px}
.download-grid{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.download-btn{
  display:inline-flex;align-items:center;gap:10px;
  background:linear-gradient(135deg,var(--orange),var(--orange-dark));color:#fff;
  padding:16px 32px;border-radius:50px;font-size:1rem;font-weight:700;
  box-shadow:0 8px 30px rgba(255,107,0,0.35);transition:all .3s;min-width:220px;
}
.download-btn:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(255,107,0,0.45);color:#fff}
.download-btn .d-icon{font-size:1.2rem;display:flex;align-items:center}
.download-btn .d-icon svg{width:20px;height:20px}
.download-btn .d-label{display:block;font-size:.72rem;font-weight:400;opacity:.85;margin-top:2px}
.footer{border-top:1px solid rgba(255,255,255,0.06);padding:40px 0 30px}
.footer .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.footer-brand{display:flex;align-items:center;gap:8px;font-weight:700}
.footer-brand img{height:28px;width:auto}
.footer-links{display:flex;gap:24px;flex-wrap:wrap}
.footer-links a{color:var(--light-gray);font-size:.85rem}
.footer-links a:hover{color:var(--orange)}
.footer-copy{color:var(--light-gray);font-size:.8rem;opacity:.6}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeInUp .8s ease both}
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s,transform .7s}
.reveal.visible{opacity:1;transform:translateY(0)}
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .models-grid{grid-template-columns:repeat(2,1fr)}
  .platforms-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:768px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .hero{min-height:auto;padding:100px 0 60px}
  .hero-stats{gap:28px}
  .section{padding:60px 0}
  .features-grid,.models-grid,.steps-grid{grid-template-columns:1fr}
  .platforms-grid{grid-template-columns:repeat(3,1fr)}
  .steps-grid::before{display:none}
  .cta-section{padding:50px 24px;border-radius:20px}
  .footer .container{flex-direction:column;text-align:center}
  .download-btn{min-width:180px;padding:14px 20px;font-size:.9rem}
  .download-grid{gap:12px}
  .btn-download{min-width:160px;font-size:.82rem;padding:12px 20px}
}
@media(max-width:480px){
  .platforms-grid{grid-template-columns:repeat(2,1fr)}
  .hero-actions{flex-direction:column;align-items:center}
  .btn-secondary{width:100%;justify-content:center}
  .hero-stats{flex-direction:column;gap:16px}
  .download-btn{width:100%;justify-content:center}
}