/* ===== 基础重置与变量 ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#6C5CE7;--primary-light:#a29bfe;--primary-dark:#5a4bd1;
  --accent:#00cec9;--accent-light:#81ecec;
  --bg-dark:#0a0a1a;--bg-card:rgba(255,255,255,0.04);
  --text:#e8e8f0;--text-muted:#8888aa;
  --glass:rgba(255,255,255,0.06);--glass-border:rgba(255,255,255,0.1);
  --glow:0 0 40px rgba(108,92,231,0.3);
  --radius:16px;--radius-sm:10px;
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  background:var(--bg-dark);color:var(--text);
  line-height:1.7;overflow-x:hidden;
}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent-light)}
img{max-width:100%;display:block}

/* ===== 背景粒子画布 ===== */
#particles-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none}

/* ===== 导航栏 ===== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:0 48px;height:72px;
  display:flex;align-items:center;justify-content:space-between;
  background:rgba(10,10,26,0.75);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--glass-border);
  transition:background .3s,box-shadow .3s;
}
.navbar.scrolled{background:rgba(10,10,26,0.95);box-shadow:0 2px 30px rgba(0,0,0,0.4)}
.nav-logo{display:flex;align-items:center;gap:12px;font-size:1.25rem;font-weight:700;color:#fff}
.nav-logo img{width:40px;height:40px;border-radius:10px}
.nav-links{display:flex;gap:36px;list-style:none}
.nav-links a{color:var(--text-muted);font-size:.95rem;font-weight:500;transition:color .2s;position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--accent);transition:width .3s}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{
  padding:10px 24px;border-radius:50px;font-size:.9rem;font-weight:600;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:var(--glow)}

/* ===== 移动端菜单 ===== */
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* ===== 通用容器 ===== */
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Hero 区域 ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:120px 0 60px;overflow:hidden;
}
.hero .container{display:flex;flex-direction:column;align-items:center}
.hero-center{text-align:center;max-width:720px}
.hero-center p{margin-left:auto;margin-right:auto}
.hero-center .hero-actions{justify-content:center}
.hero-content{position:relative;z-index:1}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:50px;font-size:.8rem;font-weight:600;
  background:var(--glass);border:1px solid var(--glass-border);
  color:var(--accent);margin-bottom:24px;
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:3.5rem;font-weight:800;line-height:1.2;margin-bottom:20px;
  background:linear-gradient(135deg,#fff 30%,var(--primary-light) 70%,var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.hero p{font-size:1.15rem;color:var(--text-muted);margin-bottom:40px;max-width:520px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary{
  padding:14px 36px;border-radius:50px;font-size:1rem;font-weight:600;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;border:none;cursor:pointer;transition:all .3s;
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(108,92,231,0.4)}
.btn-outline{
  padding:14px 36px;border-radius:50px;font-size:1rem;font-weight:600;
  background:transparent;color:#fff;
  border:1px solid var(--glass-border);cursor:pointer;transition:all .3s;
}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-3px)}

/* ===== 截图轮播 ===== */
.carousel-wrapper{
  position:relative;width:100%;max-width:900px;margin:48px auto 0;z-index:1;
}
.carousel-glow{
  position:absolute;width:80%;height:80%;top:10%;left:10%;border-radius:50%;
  background:radial-gradient(circle,rgba(108,92,231,0.12) 0%,transparent 70%);
  pointer-events:none;z-index:0;
}
.carousel-window{
  position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--glass-border);
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
  background:var(--bg-card);
}
.carousel-track{
  display:flex;transition:transform .5s cubic-bezier(.4,0,.2,1);
}
.carousel-slide{
  min-width:100%;
}
.carousel-slide img{
  width:100%;display:block;
}
.carousel-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:50%;border:1px solid var(--glass-border);
  background:rgba(10,10,26,0.7);backdrop-filter:blur(10px);
  color:#fff;font-size:1.1rem;cursor:pointer;transition:all .2s;
  display:flex;align-items:center;justify-content:center;z-index:2;
}
.carousel-btn:hover{background:var(--primary);border-color:var(--primary)}
.carousel-prev{left:-22px}
.carousel-next{right:-22px}
.carousel-dots{
  display:flex;justify-content:center;gap:10px;margin-top:20px;
}
.carousel-dot{
  width:10px;height:10px;border-radius:50%;
  background:rgba(255,255,255,0.2);cursor:pointer;transition:all .3s;
}
.carousel-dot.active{background:var(--accent);box-shadow:0 0 8px rgba(0,206,201,0.5)}

/* ===== 章节标题 ===== */
.section{padding:100px 0;position:relative;z-index:1}
.section-header{text-align:center;margin-bottom:64px}
.section-header h2{font-size:2.5rem;font-weight:700;margin-bottom:16px;
  background:linear-gradient(135deg,#fff,var(--primary-light));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.section-header p{color:var(--text-muted);font-size:1.1rem;max-width:600px;margin:0 auto}

/* ===== 功能介绍 ===== */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{
  padding:36px 28px;border-radius:var(--radius);
  background:var(--bg-card);border:1px solid var(--glass-border);
  transition:all .3s;position:relative;overflow:hidden;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  opacity:0;transition:opacity .3s;
}
.feature-card:hover{transform:translateY(-6px);border-color:rgba(108,92,231,0.3);box-shadow:0 12px 40px rgba(0,0,0,0.3)}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;margin-bottom:20px;
  background:linear-gradient(135deg,rgba(108,92,231,0.15),rgba(0,206,201,0.1));
  border:1px solid rgba(108,92,231,0.2);
}
.feature-card h3{font-size:1.2rem;font-weight:600;margin-bottom:10px;color:#fff}
.feature-card p{color:var(--text-muted);font-size:.95rem;line-height:1.6}

/* ===== 下载区域 ===== */
.download-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;max-width:800px;margin:0 auto}
.download-card{
  padding:40px;border-radius:var(--radius);text-align:center;
  background:var(--bg-card);border:1px solid var(--glass-border);
  transition:all .3s;
}
.download-card:hover{transform:translateY(-4px);border-color:rgba(108,92,231,0.3);box-shadow:0 12px 40px rgba(0,0,0,0.3)}
.download-icon{font-size:3rem;margin-bottom:16px}
.download-card h3{font-size:1.3rem;font-weight:600;margin-bottom:8px;color:#fff}
.download-card p{color:var(--text-muted);font-size:.9rem;margin-bottom:24px}
.download-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 32px;border-radius:50px;font-size:.95rem;font-weight:600;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;border:none;cursor:pointer;transition:all .3s;
}
.download-btn:hover{box-shadow:var(--glow);transform:translateY(-2px)}
.download-version{margin-top:12px;font-size:.8rem;color:var(--text-muted)}

/* ===== 视频教程 ===== */
.tutorials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.tutorials-grid-2{grid-template-columns:repeat(2,1fr);max-width:800px;margin:0 auto}
a.tutorial-card{color:inherit;text-decoration:none}
.tutorial-card{
  border-radius:var(--radius);overflow:hidden;
  background:var(--bg-card);border:1px solid var(--glass-border);
  transition:all .3s;cursor:pointer;
}
.tutorial-card:hover{transform:translateY(-4px);border-color:rgba(108,92,231,0.3);box-shadow:0 12px 40px rgba(0,0,0,0.3)}
.tutorial-video{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:#000;
}
.tutorial-video iframe{
  position:absolute;top:0;left:0;width:100%;height:100%;border:none;
}
.video-cover{
  position:absolute;top:0;left:0;width:100%;height:100%;z-index:2;
  background:linear-gradient(135deg,rgba(10,10,26,0.85),rgba(108,92,231,0.2));
  backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background .3s;
}
.video-cover:hover{background:linear-gradient(135deg,rgba(10,10,26,0.7),rgba(108,92,231,0.3))}
.video-cover .play-btn{
  width:72px;height:72px;border-radius:50%;
  background:rgba(255,255,255,0.12);backdrop-filter:blur(10px);
  border:2px solid rgba(255,255,255,0.25);
  display:flex;align-items:center;justify-content:center;
  font-size:1.8rem;color:#fff;transition:all .3s;
}
.video-cover:hover .play-btn{background:var(--primary);border-color:var(--primary);transform:scale(1.1)}
.tutorial-thumb{
  position:relative;aspect-ratio:16/9;
  background:linear-gradient(135deg,rgba(108,92,231,0.2),rgba(0,206,201,0.15));
  display:flex;align-items:center;justify-content:center;
}
.play-btn{
  width:64px;height:64px;border-radius:50%;
  background:rgba(255,255,255,0.15);backdrop-filter:blur(10px);
  border:2px solid rgba(255,255,255,0.3);
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;color:#fff;transition:all .3s;
}
.tutorial-card:hover .play-btn{background:var(--primary);border-color:var(--primary);transform:scale(1.1)}
.tutorial-info{padding:20px}
.tutorial-info h3{font-size:1.05rem;font-weight:600;color:#fff;margin-bottom:6px}
.tutorial-info p{font-size:.85rem;color:var(--text-muted)}
.tutorial-duration{
  display:inline-flex;align-items:center;gap:4px;
  font-size:.75rem;color:var(--accent);margin-top:8px;
}

/* ===== 免费试用 ===== */
.trial-section{
  background:linear-gradient(180deg,transparent,rgba(108,92,231,0.05) 30%,rgba(108,92,231,0.05) 70%,transparent);
}
.trial-wrapper{
  max-width:560px;margin:0 auto;padding:48px;
  border-radius:var(--radius);
  background:var(--bg-card);border:1px solid var(--glass-border);
  backdrop-filter:blur(20px);
}
.trial-wrapper h3{font-size:1.3rem;font-weight:600;color:#fff;margin-bottom:8px;text-align:center}
.trial-wrapper>p{color:var(--text-muted);font-size:.95rem;text-align:center;margin-bottom:32px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.9rem;font-weight:500;color:var(--text);margin-bottom:8px}
.form-input{
  width:100%;padding:14px 18px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,0.04);border:1px solid var(--glass-border);
  color:#fff;font-size:.95rem;transition:border-color .2s;outline:none;
}
.form-input:focus{border-color:var(--primary)}
.form-input::placeholder{color:var(--text-muted)}
.form-select{
  width:100%;padding:14px 18px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,0.04);border:1px solid var(--glass-border);
  color:#fff;font-size:.95rem;outline:none;cursor:pointer;
  appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238888aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;
}
.form-select option{background:#1a1a2e;color:#fff}
.submit-btn{
  width:100%;padding:16px;border-radius:var(--radius-sm);
  font-size:1rem;font-weight:600;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;border:none;cursor:pointer;transition:all .3s;
}
.submit-btn:hover{box-shadow:var(--glow);transform:translateY(-2px)}
.submit-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* 试用结果 */
.trial-result{
  margin-top:24px;padding:20px;border-radius:var(--radius-sm);
  text-align:center;display:none;
}
.trial-result.success{
  background:rgba(0,206,201,0.1);border:1px solid rgba(0,206,201,0.3);
}
.trial-result.error{
  background:rgba(255,95,87,0.1);border:1px solid rgba(255,95,87,0.3);
}
.trial-result h4{font-size:1.1rem;margin-bottom:8px;color:#fff}
.trial-result .license-key{
  font-family:'Courier New',monospace;font-size:.85rem;
  padding:12px;border-radius:8px;background:rgba(0,0,0,0.3);
  color:var(--accent);word-break:break-all;margin:12px 0;
  user-select:all;cursor:pointer;
}
.trial-result p{font-size:.85rem;color:var(--text-muted)}
.copy-hint{font-size:.75rem;color:var(--text-muted);margin-top:4px}

/* ===== 微信二维码弹窗 ===== */
.qr-modal{
  display:none;position:fixed;top:0;left:0;right:0;bottom:0;z-index:200;
  background:rgba(0,0,0,0.7);backdrop-filter:blur(6px);
  align-items:center;justify-content:center;
}
.qr-modal.show{display:flex}
.qr-modal-content{
  position:relative;padding:32px;border-radius:var(--radius);
  background:var(--bg-dark);border:1px solid var(--glass-border);
  text-align:center;max-width:360px;
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
}
.qr-modal-content img{width:280px;border-radius:12px;margin-bottom:16px}
.qr-modal-content p{color:var(--text-muted);font-size:.95rem}
.qr-close{
  position:absolute;top:12px;right:16px;
  background:none;border:none;color:var(--text-muted);
  font-size:1.8rem;cursor:pointer;transition:color .2s;
}
.qr-close:hover{color:#fff}

/* ===== 页脚 ===== */
.footer{
  padding:48px 0 32px;border-top:1px solid var(--glass-border);
  position:relative;z-index:1;
}
.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:600;color:#fff}
.footer-brand img{width:32px;height:32px;border-radius:8px}
.footer-links{display:flex;gap:24px}
.footer-links a{color:var(--text-muted);font-size:.9rem;transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-copy{width:100%;text-align:center;margin-top:24px;padding-top:24px;
  border-top:1px solid var(--glass-border);font-size:.8rem;color:var(--text-muted)}

/* ===== 滚动动画 ===== */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s,transform .6s}
.fade-in.visible{opacity:1;transform:translateY(0)}
.fade-in-delay-1{transition-delay:.1s}
.fade-in-delay-2{transition-delay:.2s}
.fade-in-delay-3{transition-delay:.3s}
.fade-in-delay-4{transition-delay:.4s}
.fade-in-delay-5{transition-delay:.5s}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .hero h1{font-size:2.8rem}
  .carousel-wrapper{max-width:700px}
  .carousel-prev{left:8px}.carousel-next{right:8px}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .tutorials-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .navbar{padding:0 20px}
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;
    flex-direction:column;background:rgba(10,10,26,0.98);padding:20px;gap:16px;
    border-bottom:1px solid var(--glass-border);
  }
  .nav-links.open{display:flex}
  .menu-toggle{display:block}
  .hero{padding:100px 0 60px;min-height:auto}
  .hero h1{font-size:2.2rem}
  .hero-actions{flex-direction:column}
  .btn-primary,.btn-outline{width:100%;text-align:center}
  .features-grid,.tutorials-grid{grid-template-columns:1fr}
  .download-cards{grid-template-columns:1fr}
  .section{padding:60px 0}
  .trial-wrapper{padding:28px 20px}
}