/* ===== 全局 现代简约卡片风 ===== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Inter","PingFang SC","Microsoft YaHei",sans-serif;
  background:#fafafa;color:#1a1a2e;line-height:1.7;
  overflow-x:hidden;position:relative;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}

/* ===== 导航栏 ===== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:16px 0;transition:all .3s;
  background:rgba(250,250,250,0.85);backdrop-filter:blur(20px);
}
.navbar.scrolled{background:rgba(250,250,250,0.98);box-shadow:0 2px 20px rgba(0,0,0,0.06)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.nav-brand{display:flex;align-items:center;gap:10px}
.nav-logo{width:38px;height:38px;border-radius:10px}
.nav-name{font-size:19px;font-weight:800;color:#1a1a2e}
.nav-links{display:flex;gap:6px}
.nav-links a{font-size:14px;color:#666;padding:8px 16px;border-radius:10px;transition:all .3s;font-weight:500}
.nav-links a:hover{color:#ffb347;background:rgba(255,179,71,0.1)}
.nav-cta{
  padding:10px 24px;background:linear-gradient(135deg,#ffd23f,#ffb347);
  color:#1a1a2e;border-radius:12px;font-size:14px;font-weight:700;
  box-shadow:0 4px 15px rgba(255,179,71,0.3);transition:all .3s;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,179,71,0.4)}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:22px;height:2px;background:#ffb347;border-radius:2px}

/* ===== Hero首屏 ===== */
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding:100px 0 60px;overflow:hidden}
.hero-bg-circle{position:absolute;border-radius:50%;filter:blur(80px);z-index:0}
.c1{width:400px;height:400px;background:rgba(255,210,63,0.15);top:-100px;right:10%;animation:floatCircle 8s ease-in-out infinite}
.c2{width:300px;height:300px;background:rgba(255,179,71,0.1);bottom:10%;left:-50px;animation:floatCircle 10s ease-in-out infinite reverse}
@keyframes floatCircle{0%,100%{transform:translate(0,0)}50%{transform:translate(30px,-20px)}}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;width:100%;position:relative;z-index:1}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;
  background:#fff;border:1px solid #eee;border-radius:20px;
  font-size:12px;color:#ffb347;font-weight:600;margin-bottom:24px;
  box-shadow:0 2px 10px rgba(0,0,0,0.04);
}
.badge-dot{width:6px;height:6px;border-radius:50%;background:#4ade80;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}
.hero-title{font-size:48px;font-weight:900;color:#1a1a2e;line-height:1.2;margin-bottom:20px}
.title-accent{background:linear-gradient(135deg,#ffd23f,#ff6b35);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-desc{font-size:16px;color:#666;margin-bottom:32px;max-width:480px;line-height:1.8}
.hero-actions{display:flex;gap:14px;margin-bottom:36px;flex-wrap:wrap}
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;padding:14px 32px;
  background:linear-gradient(135deg,#ffd23f,#ffb347);color:#1a1a2e;
  border-radius:14px;font-size:16px;font-weight:700;
  box-shadow:0 6px 20px rgba(255,179,71,0.35);transition:all .3s;
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(255,179,71,0.45)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;padding:14px 32px;
  background:#fff;color:#1a1a2e;border:2px solid #eee;
  border-radius:14px;font-size:16px;font-weight:600;transition:all .3s;
}
.btn-ghost:hover{border-color:#ffb347;color:#ffb347}
.hero-numbers{display:flex;align-items:center;gap:24px}
.hn-item{display:flex;flex-direction:column}
.hn-num{font-size:28px;font-weight:900;color:#1a1a2e}
.hn-num span{font-size:16px;color:#ffb347}
.hn-label{font-size:12px;color:#999;margin-top:2px}
.hn-divider{width:1px;height:36px;background:#e0e0e0}

/* Hero手机 */
.hero-visual{display:flex;justify-content:center;align-items:center;position:relative;min-height:500px}
.hero-phone{position:relative;animation:phoneFloat 5s ease-in-out infinite}
@keyframes phoneFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.phone-frame{
  width:260px;height:520px;background:#fff;border-radius:36px;
  border:3px solid #f0f0f0;overflow:hidden;position:relative;
  box-shadow:0 25px 60px rgba(0,0,0,0.12);
}
.phone-notch{position:absolute;top:0;left:50%;transform:translateX(-50%);width:100px;height:24px;background:#fff;border-radius:0 0 16px 16px;z-index:2}
.phone-screen{width:100%;height:100%;object-fit:cover;object-position:top}
.phone-play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,0.95);
  display:flex;align-items:center;justify-content:center;font-size:20px;color:#ffb347;
  box-shadow:0 4px 20px rgba(0,0,0,0.2);
}
.hero-float-card{
  position:absolute;padding:12px 16px;background:#fff;
  border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,0.1);
  display:flex;align-items:center;gap:10px;
  animation:cardFloat 4s ease-in-out infinite;
}
.hfc-1{top:80px;left:-20px}
.hfc-2{bottom:100px;right:-10px;animation-delay:1s}
@keyframes cardFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hfc-icon{width:36px;height:36px;border-radius:10px;background:#fff5d6;display:flex;align-items:center;justify-content:center;font-size:18px}
.hfc-content{display:flex;flex-direction:column}
.hfc-title{font-size:13px;font-weight:700;color:#1a1a2e}
.hfc-desc{font-size:11px;color:#999}

/* ===== 通用区块 ===== */
section{padding:90px 0;position:relative;z-index:1}
.section-head{text-align:center;margin-bottom:50px;padding:0 24px}
.section-tag{display:inline-block;font-size:12px;letter-spacing:2px;color:#ffb347;font-weight:700;margin-bottom:12px;background:#fff5d6;padding:5px 14px;border-radius:8px}
.section-title{font-size:36px;font-weight:900;color:#1a1a2e;margin-bottom:10px}
.section-title.left{text-align:left}
.section-desc{font-size:15px;color:#999}
.section-desc.left{text-align:left}

/* ===== 精选视频 ===== */
.featured-grid{max-width:1100px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.5fr 1fr;gap:24px}
.featured-card{background:#fff;border-radius:20px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:all .4s;cursor:pointer}
.featured-card:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(0,0,0,0.1)}
.featured-card.large{display:flex;flex-direction:column}
.featured-row{display:flex;flex-direction:column;gap:24px}
.featured-card.small{display:flex;flex-direction:column}
.fc-cover{position:relative;background-size:cover;background-position:center;flex:1;min-height:200px}
.featured-card.large .fc-cover{min-height:280px}
.fc-overlay{position:absolute;inset:0;background:linear-gradient(transparent 50%,rgba(0,0,0,0.3));display:flex;align-items:flex-end;justify-content:space-between;padding:14px}
.fc-duration{font-size:12px;color:#fff;background:rgba(0,0,0,0.6);padding:4px 10px;border-radius:6px;font-weight:600}
.fc-play{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,0.9);display:flex;align-items:center;justify-content:center;font-size:14px;color:#ffb347;opacity:0;transition:opacity .3s}
.featured-card:hover .fc-play{opacity:1}
.fc-info{padding:18px 20px}
.fc-tag{display:inline-block;font-size:11px;color:#ffb347;background:#fff5d6;padding:3px 10px;border-radius:6px;font-weight:600;margin-bottom:8px}
.fc-info h3{font-size:17px;font-weight:700;color:#1a1a2e;margin-bottom:8px}
.fc-meta{display:flex;gap:16px;font-size:12px;color:#999}

/* ===== 核心功能 - 左右交替 ===== */
.features-list{max-width:1000px;margin:0 auto;padding:0 24px}
.feature-row{display:grid;grid-template-columns:1fr 1.2fr;gap:50px;align-items:center;margin-bottom:60px}
.feature-row:last-child{margin-bottom:0}
.feature-row.reverse{direction:rtl}
.feature-row.reverse > *{direction:ltr}
.feature-visual{
  height:240px;border-radius:24px;display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.fv-1{background:linear-gradient(135deg,#fff5d6,#ffe4b5)}
.fv-2{background:linear-gradient(135deg,#e0f0ff,#b3d9ff)}
.fv-3{background:linear-gradient(135deg,#fce4ec,#f8bbd0)}
.fv-4{background:linear-gradient(135deg,#e8f5e9,#a5d6a7)}
.fv-icon{font-size:64px;z-index:2;filter:drop-shadow(0 4px 10px rgba(0,0,0,0.1))}
.fv-deco{position:absolute;width:120px;height:120px;border-radius:50%;background:rgba(255,255,255,0.3);top:-30px;right:-30px}
.feature-content{}
.feature-num{font-size:48px;font-weight:900;color:rgba(0,0,0,0.06);line-height:1;margin-bottom:8px}
.feature-content h3{font-size:24px;font-weight:800;color:#1a1a2e;margin-bottom:12px}
.feature-content p{font-size:15px;color:#666;line-height:1.8;margin-bottom:16px}
.feature-tags{display:flex;gap:8px;flex-wrap:wrap}
.feature-tags span{font-size:12px;padding:5px 12px;background:#f5f5f5;color:#666;border-radius:8px;font-weight:500}

/* ===== 播放体验 ===== */
.experience{background:#fff}
.exp-inner{max-width:1100px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.exp-points{margin-top:30px;display:flex;flex-direction:column;gap:20px}
.exp-point{display:flex;gap:14px;align-items:flex-start}
.ep-icon{
  width:32px;height:32px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,#ffd23f,#ffb347);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;color:#fff;font-weight:700;
}
.exp-point h4{font-size:15px;font-weight:700;color:#1a1a2e;margin-bottom:2px}
.exp-point p{font-size:13px;color:#999}
.exp-visual{display:flex;justify-content:center}
.exp-phone{position:relative}
.exp-phone-frame{
  width:280px;height:560px;background:#1a1a2e;border-radius:40px;
  border:4px solid #333;overflow:hidden;position:relative;
  box-shadow:0 25px 60px rgba(0,0,0,0.2);
}
.exp-notch{position:absolute;top:0;left:50%;transform:translateX(-50%);width:120px;height:28px;background:#1a1a2e;border-radius:0 0 20px 20px;z-index:2}
.exp-screen{width:100%;height:100%;object-fit:cover;object-position:top}
.exp-controls{position:absolute;bottom:0;left:0;right:0;padding:16px;background:linear-gradient(transparent,rgba(0,0,0,0.8))}
.exp-progress{height:4px;background:rgba(255,255,255,0.2);border-radius:2px;margin-bottom:12px;position:relative}
.exp-progress-bar{width:35%;height:100%;background:#ffd23f;border-radius:2px}
.exp-progress-dot{position:absolute;left:35%;top:50%;transform:translate(-50%,-50%);width:10px;height:10px;border-radius:50%;background:#fff;box-shadow:0 0 8px rgba(255,210,63,0.6)}
.exp-buttons{display:flex;align-items:center;gap:16px}
.exp-btn{color:#fff;font-size:16px;cursor:pointer}
.exp-btn.play{width:36px;height:36px;border-radius:50%;background:#ffd23f;display:flex;align-items:center;justify-content:center;color:#1a1a2e;font-size:14px}
.exp-time{margin-left:auto;font-size:11px;color:rgba(255,255,255,0.7)}

/* ===== 用户好评 ===== */
.reviews-grid{max-width:1100px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{padding:28px 24px;background:#fff;border-radius:20px;box-shadow:0 4px 20px rgba(0,0,0,0.06);transition:all .4s}
.review-card:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(0,0,0,0.1)}
.review-stars{color:#ffd23f;font-size:16px;letter-spacing:2px;margin-bottom:14px}
.review-text{font-size:14px;color:#555;line-height:1.8;margin-bottom:20px;font-style:italic}
.review-user{display:flex;align-items:center;gap:12px}
.ru-avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;color:#fff}
.ru1{background:linear-gradient(135deg,#ffd23f,#ffb347)}
.ru2{background:linear-gradient(135deg,#ff6b9d,#c44569)}
.ru3{background:linear-gradient(135deg,#4facfe,#00f2fe)}
.review-user strong{display:block;font-size:14px;color:#1a1a2e}
.review-user span{font-size:12px;color:#999}

/* ===== 下载CTA ===== */
.cta{padding:60px 24px}
.cta-card{max-width:700px;margin:0 auto;position:relative;border-radius:28px;overflow:hidden;background:linear-gradient(135deg,#fff 0%,#fffbf0 100%);box-shadow:0 20px 60px rgba(255,179,71,0.15);border:1px solid rgba(255,210,63,0.2)}
.cta-bg-shape{position:absolute;top:-100px;right:-100px;width:300px;height:300px;border-radius:50%;background:rgba(255,210,63,0.1)}
.cta-content{position:relative;z-index:1;padding:50px 40px;text-align:center}
.cta-logo{width:64px;height:64px;border-radius:16px;margin:0 auto 18px;box-shadow:0 8px 25px rgba(255,179,71,0.3)}
.cta-title{font-size:28px;font-weight:900;color:#1a1a2e;margin-bottom:10px}
.cta-desc{font-size:15px;color:#888;margin-bottom:28px}
.cta-btn{
  display:inline-flex;align-items:center;gap:8px;padding:16px 44px;
  background:linear-gradient(135deg,#ffd23f,#ffb347);color:#1a1a2e;
  border-radius:16px;font-size:18px;font-weight:700;
  box-shadow:0 8px 25px rgba(255,179,71,0.4);transition:all .3s;
}
.cta-btn:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 12px 35px rgba(255,179,71,0.5)}
.cta-meta{display:flex;gap:24px;justify-content:center;margin-top:24px;font-size:13px;color:#999;flex-wrap:wrap}
.cta-site{margin-top:14px;font-size:13px;color:#ffb347;font-weight:600}

/* ===== 页脚 ===== */
.footer{background:#1a1a2e;padding:50px 0 0;color:#999}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 24px 36px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-logo img{width:34px;height:34px;border-radius:8px}
.footer-logo span{font-size:17px;font-weight:800;color:#fff}
.footer-brand p{font-size:13px;line-height:1.8;margin-bottom:4px;color:#777}
.footer-url{color:#ffb347 !important;font-weight:600}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col li{margin-bottom:8px}
.footer-col a{font-size:13px;color:#777;transition:color .3s}
.footer-col a:hover{color:#ffb347}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:18px 24px;text-align:center}
.footer-bottom p{font-size:12px;color:#555;line-height:1.8}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-text{order:2}
  .hero-visual{order:1;min-height:400px}
  .hero-desc,.hero-numbers{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .featured-grid{grid-template-columns:1fr}
  .feature-row{grid-template-columns:1fr;gap:24px;text-align:center}
  .feature-row.reverse{direction:ltr}
  .feature-tags{justify-content:center}
  .exp-inner{grid-template-columns:1fr;gap:40px}
  .section-title.left,.section-desc.left{text-align:center}
  .reviews-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}
@media(max-width:640px){
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-links.active{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#fafafa;padding:16px 24px;gap:4px;border-bottom:1px solid #eee}
  .hero-title{font-size:36px}
  .section-title{font-size:28px}
  .hero-numbers{gap:16px}
  .hn-divider{display:none}
  .phone-frame{width:220px;height:440px}
  .hero-float-card{display:none}
  .exp-phone-frame{width:240px;height:480px}
  .cta-meta{flex-direction:column;gap:6px}
  .footer-inner{grid-template-columns:1fr}
}