/* ===== 汽水音乐 · 柠檬气泡·夏日鲜亮风 ===== */
:root {
  --bg: #fefcf5;
  --bg2: #fdf8ea;
  --bg3: #fcf0d8;
  --card: #ffffff;
  --border: #f0e8d0;
  --border-light: #f5eedf;
  --text: #1a1206;
  --text2: #5c4828;
  --text3: #8c7548;
  --gold: #eab308;
  --gold-light: #facc15;
  --gold-soft: #fef9e7;
  --gold-glow: rgba(234,179,8,0.15);
  --coral: #f97316;
  --coral-soft: #fff7ed;
  --amber: #f59e0b;
  --radius: 20px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --shadow: 0 2px 16px rgba(180,140,50,0.06);
  --shadow-md: 0 8px 32px rgba(180,140,50,0.09);
  --shadow-lg: 0 20px 60px rgba(180,140,50,0.12);
  --trans: 0.3s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* Nav */
.nav-bar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(254,252,245,0.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
}
.nav-inner{
  max-width:1240px;margin:0 auto;padding:0 32px;height:66px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-0.3px}
.nav-brand img{width:32px;height:32px}
.nav-brand .accent{color:var(--gold)}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-menu a{padding:9px 18px;border-radius:var(--radius-xs);font-size:14px;font-weight:500;color:var(--text2);transition:all var(--trans)}
.nav-menu a:hover{color:var(--coral);background:var(--coral-soft)}
.nav-menu a.btn-nav{background:linear-gradient(135deg,var(--gold),var(--amber));color:#fff;font-weight:600;border-radius:99px;padding:10px 24px;box-shadow:0 4px 18px var(--gold-glow)}
.nav-menu a.btn-nav:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(234,179,8,0.3)}
.nav-toggle{display:none;background:none;border:none;color:var(--text);font-size:24px;cursor:pointer}

/* Hero */
.hero{
  padding:150px 0 64px;position:relative;overflow:hidden;
  background:linear-gradient(175deg,#fefcf5 0%,#fdf8ea 30%,#fdf5de 60%,#fefcf5 100%);
}
.hero::before{
  content:"";position:absolute;top:-120px;right:-60px;
  width:500px;height:500px;
  background:radial-gradient(circle,rgba(250,204,21,0.1) 0%,transparent 55%);
  pointer-events:none;border-radius:50%;
}
.hero::after{
  content:"";position:absolute;bottom:-60px;left:5%;
  width:350px;height:300px;
  background:radial-gradient(ellipse,rgba(249,115,22,0.04) 0%,transparent 60%);
  pointer-events:none;border-radius:50%;
}
.hero-grid{
  max-width:1240px;margin:0 auto;padding:0 32px;
  display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;
  position:relative;z-index:1;
}
.hero-text .tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 18px;border-radius:99px;
  background:var(--coral-soft);color:var(--coral);
  font-size:12px;font-weight:700;margin-bottom:24px;
}
.tag .dot{width:7px;height:7px;border-radius:50%;background:var(--coral);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.3}}
.hero-text h1{font-size:clamp(34px,5vw,54px);font-weight:900;line-height:1.08;letter-spacing:-1.5px;margin-bottom:20px}
.hero-text h1 .hl{
  background:linear-gradient(135deg,var(--gold),var(--coral));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-text .desc{font-size:16px;color:var(--text3);line-height:1.8;margin-bottom:34px;max-width:460px}
.hero-btns{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.hero-btns .tip{font-size:12px;color:var(--text3)}

.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:99px;font-size:14px;font-weight:600;cursor:pointer;transition:all var(--trans);border:none;white-space:nowrap}
.btn-fill{background:linear-gradient(135deg,var(--gold),var(--coral));color:#fff;box-shadow:0 6px 24px var(--gold-glow)}
.btn-fill:hover{transform:translateY(-2px);box-shadow:0 12px 36px rgba(234,179,8,0.3)}
.btn-line{background:var(--card);color:var(--text);border:1.5px solid var(--border)}
.btn-line:hover{border-color:var(--gold);color:var(--gold);background:var(--gold-soft)}
.btn-muted{background:var(--bg2);color:var(--text);border:1px solid var(--border);border-radius:99px}
.btn-muted:hover{background:#fff;border-color:var(--gold)}

/* Player visual */
.player-visual{position:relative}
.player-box{
  background:var(--card);border:1px solid var(--border);
  border-radius:24px;overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.player-box .pb-cover{
  height:210px;
  background:linear-gradient(135deg,#fff7ed,#fef9e7,#fffbeb);
  display:grid;place-items:center;position:relative;
}
.pb-cover .pb-disc{
  width:110px;height:110px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold),#fbbf24,var(--coral));
  display:grid;place-items:center;font-size:38px;
  box-shadow:0 0 48px rgba(234,179,8,0.25);
  animation:spin 10s linear infinite;
}
@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
.pb-cover .pb-inner{width:32px;height:32px;background:rgba(255,255,255,0.6);border-radius:50%}
.player-box .pb-info{padding:18px 20px}
.pb-info .pb-title{font-size:16px;font-weight:700;margin-bottom:4px}
.pb-info .pb-artist{font-size:13px;color:var(--text3)}
.pb-info .pb-bar{margin-top:14px;height:5px;background:var(--border);border-radius:3px;position:relative;overflow:hidden}
.pb-bar::after{content:"";position:absolute;top:0;left:0;width:42%;height:100%;background:linear-gradient(90deg,var(--gold),var(--coral));border-radius:3px}
.player-badge{
  position:absolute;bottom:-18px;left:-24px;
  background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:14px 20px;box-shadow:var(--shadow-md);
  display:flex;align-items:center;gap:12px
}
.player-badge .ic{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--gold),var(--coral));display:grid;place-items:center;font-size:18px;color:#fff}
.player-badge strong{display:block;font-size:13px}
.player-badge span{font-size:11px;color:var(--coral)}

/* Platform strip */
.plt-strip{max-width:1240px;margin:0 auto;padding:0 32px 72px;position:relative;z-index:1}
.plt-inner{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:28px 40px;
  display:flex;align-items:center;justify-content:center;gap:48px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.plt-inner .pi{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text2);font-weight:500}
.pi .pii{font-size:20px}

/* Sections */
.sec{max-width:1240px;margin:0 auto;padding:80px 32px}
.sec-head{text-align:center;margin-bottom:56px}
.sec-head .label{
  display:inline-block;padding:5px 16px;border-radius:99px;
  background:var(--gold-soft);color:var(--amber);
  font-size:12px;font-weight:700;letter-spacing:0.8px;margin-bottom:16px;
}
.sec-head h2{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-0.5px;margin-bottom:12px}
.sec-head p{color:var(--text3);font-size:15px;max-width:520px;margin:0 auto}

/* Feature cards */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feat-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:30px 24px;text-align:center;
  transition:all var(--trans);position:relative;
}
.feat-card:hover{border-color:#f0d860;box-shadow:var(--shadow-md);transform:translateY(-3px)}
.feat-card .fc-icon{
  width:54px;height:54px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold-soft),var(--coral-soft));
  display:grid;place-items:center;font-size:22px;margin:0 auto 16px;
}
.feat-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:13px;color:var(--text3);line-height:1.7}

/* Playlist dark zone */
.dark-zone{
  background:linear-gradient(160deg,#1a1206 0%,#261c0e 40%,#1a1206 100%);
  color:#fff;position:relative;overflow:hidden;
}
.dark-zone::before{
  content:"";position:absolute;bottom:-80px;right:-60px;
  width:450px;height:350px;
  background:radial-gradient(ellipse,rgba(234,179,8,0.08) 0%,transparent 60%);
  pointer-events:none;
}
.dark-zone .sec-head .label{background:rgba(234,179,8,0.1);color:var(--gold-light)}
.dark-zone .sec-head h2{color:#fff}
.dark-zone .sec-head p{color:#8c7548}
.pl-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;z-index:1}
.pl-card{
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.06);
  border-radius:var(--radius);padding:36px 28px;text-align:center;
  transition:all var(--trans);
}
.pl-card:hover{background:rgba(255,255,255,0.06);transform:translateY(-3px);border-color:rgba(234,179,8,0.2)}
.pl-card .pli{font-size:40px;margin-bottom:12px}
.pl-card h3{font-size:17px;font-weight:700;margin-bottom:6px}
.pl-card p{font-size:12px;color:#8c7548}
.pl-card .pl-song{display:flex;flex-direction:column;gap:5px;margin-top:16px;text-align:left;padding:0 10px}
.pl-song .s{font-size:11px;color:#8c7548;padding:6px 10px;background:rgba(255,255,255,0.02);border-radius:6px;border-left:2px solid rgba(234,179,8,0.2)}

/* Stats */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:30px 20px;text-align:center;
  transition:all var(--trans);
}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.stat-card .sn{font-size:36px;font-weight:900;background:linear-gradient(135deg,var(--gold),var(--coral));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-card .sl{font-size:13px;color:var(--text2);margin-top:6px;font-weight:600}
.stat-card .ss{font-size:11px;color:var(--text3);margin-top:4px}

/* FAQ */
.faq-wrap{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.faq-q{
  width:100%;padding:20px 24px;background:none;border:none;
  color:var(--text);font-size:15px;font-weight:600;text-align:left;
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  font-family:inherit;
}
.faq-q .arrow{font-size:12px;color:var(--gold);transition:transform var(--trans)}
.faq-a{padding:0 24px 20px;font-size:14px;color:var(--text3);line-height:1.8;display:none}
.faq-item.open .faq-a{display:block}
.faq-item.open .arrow{transform:rotate(180deg)}
.faq-item.open{border-color:var(--gold);box-shadow:0 0 0 4px var(--gold-glow)}

/* CTA */
.cta-box{
  background:linear-gradient(135deg,var(--gold-soft),var(--coral-soft));
  border:1.5px solid rgba(234,179,8,0.15);border-radius:var(--radius);
  padding:60px 48px;text-align:center;
}
.cta-box h2{font-size:clamp(28px,4vw,36px);font-weight:800;margin-bottom:12px}
.cta-box p{color:var(--text3);font-size:15px;margin-bottom:28px}
.cta-box .cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Footer */
.footer{background:var(--bg2);border-top:1px solid var(--border)}
.footer-grid{
  max-width:1240px;margin:0 auto;padding:56px 32px 28px;
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;
}
.footer-brand .fl{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;margin-bottom:12px}
.footer-brand .fl .fc{color:var(--gold)}
.footer-brand p{font-size:13px;color:var(--text3);line-height:1.7;max-width:260px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px}
.footer-col a{display:block;font-size:13px;color:var(--text3);padding:5px 0;transition:color var(--trans)}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{
  max-width:1240px;margin:0 auto;padding:18px 32px;
  border-top:1px solid var(--border);
  display:flex;justify-content:space-between;font-size:12px;color:var(--text3);
  flex-wrap:wrap;gap:12px;
}

/* Download */
.dl-hero{padding:130px 0 56px;text-align:center;background:linear-gradient(180deg,#fefcf5,var(--bg2))}
.dl-hero-inner{max-width:760px;margin:0 auto;padding:0 32px}
.dl-hero-inner h1{font-size:clamp(30px,5vw,44px);font-weight:900;margin-bottom:12px}
.dl-hero-inner .dl-sub{color:var(--text3);font-size:14px;margin-bottom:20px}
.dl-meta{display:inline-flex;gap:22px;font-size:13px;color:var(--text2);flex-wrap:wrap;justify-content:center}
.dl-grid{max-width:1240px;margin:0 auto 56px;padding:0 32px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.dl-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:34px 26px;text-align:center;
  transition:all var(--trans);display:flex;flex-direction:column;gap:14px;
}
.dl-card:hover{border-color:var(--gold);box-shadow:var(--shadow-md);transform:translateY(-3px)}
.dl-card .dl-tag{display:inline-block;padding:5px 16px;border-radius:99px;font-size:11px;font-weight:700;background:var(--gold-soft);color:var(--gold);align-self:center}
.dl-card h3{font-size:18px;font-weight:700}
.dl-card .dl-info{font-size:12px;color:var(--text3);line-height:1.6}
.dl-card .dl-size{font-size:11px;color:var(--text3)}
.dl-tips{max-width:1240px;margin:0 auto 56px;padding:0 32px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.dl-tips .tp{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:22px 18px;display:flex;gap:14px;align-items:flex-start}
.tp .tp-num{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--gold),var(--coral));color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800;flex-shrink:0}
.tp strong{display:block;font-size:14px;margin-bottom:4px}
.tp p{font-size:12px;color:var(--text3);line-height:1.6}

.specs-tbl{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.specs-tbl .sr{display:grid;grid-template-columns:150px 1fr;border-bottom:1px solid var(--border)}
.specs-tbl .sr:last-child{border-bottom:none}
.specs-tbl .sl{padding:15px 20px;background:var(--gold-soft);font-size:12px;font-weight:700;color:var(--amber)}
.specs-tbl .sv{padding:15px 20px;font-size:12px;color:var(--text2)}

/* 404 */
.err-wrap{min-height:100vh;display:grid;place-items:center;padding:32px;background:linear-gradient(160deg,#fefcf5 0%,#fdf8ea 100%)}
.err-card{
  max-width:480px;text-align:center;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:60px 48px;box-shadow:var(--shadow-lg);
}
.err-card .err-num{
  font-size:clamp(90px,16vw,140px);font-weight:900;
  background:linear-gradient(135deg,var(--gold),var(--coral));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;line-height:0.9;margin-bottom:8px;
}
.err-card h1{font-size:20px;font-weight:700;margin-bottom:12px}
.err-card p{color:var(--text3);font-size:13px;line-height:1.7;margin-bottom:28px}
.err-card .err-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .pl-row{grid-template-columns:1fr;max-width:420px;margin:0 auto}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-menu{display:none}
  .nav-toggle{display:block}
  .nav-menu.open{display:flex;flex-direction:column;position:absolute;top:66px;left:0;right:0;background:rgba(255,255,255,0.98);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:12px 24px;gap:4px;z-index:99}
  .hero{padding:120px 0 50px}
  .feat-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .dl-grid,.dl-tips{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .sec{padding:52px 20px}
  .cta-box{padding:44px 24px}
}