/* ============================================================
   汽水音乐官网 · www.qishuimu.site
   非官方分享站 · 视觉基线：抖音黑粉紫调 + 汽水气泡质感
   ============================================================ */
:root{
  --bg:#0e0a1f;
  --bg-2:#160c2e;
  --bg-3:#1d1140;
  --panel:#1a1236;
  --panel-2:#221848;
  --text:#f5f2ff;
  --text-dim:#c9c2e0;
  --text-mute:#8c84ad;
  --brand:#ff2e63;
  --brand-2:#a62e96;
  --brand-3:#8b5cf6;
  --accent:#00f2c0;
  --yellow:#ffd166;
  --blue:#00c2ff;
  --line:rgba(255,255,255,.08);
  --shadow:0 20px 60px rgba(0,0,0,.5);
  --radius:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
a:hover{color:var(--brand)}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 顶部 Header ---------- */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  backdrop-filter:blur(14px);
  background:rgba(14,10,31,.72);
  border-bottom:1px solid var(--line);
  height:64px;
}
.header-inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;
  max-width:1200px;margin:0 auto;padding:0 24px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.5px}
.brand-logo{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,#ff2e63 0%,#a62e96 50%,#8b5cf6 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 14px rgba(255,46,99,.5);
}
.brand-logo svg{width:20px;height:20px}
.brand-name{background:linear-gradient(90deg,#ff2e63,#ff6b9d);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-suffix{font-size:11px;color:var(--text-mute);font-weight:400;margin-left:6px}
.nav{display:flex;align-items:center;gap:6px}
.nav a{
  padding:8px 14px;border-radius:8px;font-size:14px;color:var(--text-dim);
  transition:all .2s;
}
.nav a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav a.on{color:var(--text);background:rgba(255,46,99,.12);font-weight:600}
.nav-cta{
  padding:8px 18px;border-radius:99px;
  background:linear-gradient(135deg,#ff2e63,#a62e96);
  color:#fff!important;font-weight:600;font-size:13px;
  box-shadow:0 4px 12px rgba(255,46,99,.4);
}
.nav-cta:hover{filter:brightness(1.1)}
.hamburger{display:none;background:none;border:none;color:#fff;font-size:22px;cursor:pointer}
.mobile-nav{
  display:none;position:fixed;top:64px;left:0;right:0;z-index:99;
  background:rgba(14,10,31,.96);backdrop-filter:blur(14px);
  padding:12px 24px;border-bottom:1px solid var(--line);
  flex-direction:column;gap:4px;
}
.mobile-nav.show{display:flex}
.mobile-nav a{padding:12px 16px;border-radius:8px;color:var(--text-dim)}
.mobile-nav a:hover,.mobile-nav a.on{background:rgba(255,46,99,.15);color:#fff}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:120px 0 80px;
  background:
    radial-gradient(ellipse 800px 400px at 20% 30%,rgba(255,46,99,.28),transparent 60%),
    radial-gradient(ellipse 600px 400px at 80% 20%,rgba(139,92,246,.32),transparent 60%),
    radial-gradient(ellipse 500px 300px at 50% 90%,rgba(0,242,192,.14),transparent 60%),
    linear-gradient(180deg,#0e0a1f 0%,#160c2e 100%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(2px 2px at 20% 30%,rgba(255,255,255,.4),transparent),
    radial-gradient(1px 1px at 60% 70%,rgba(255,255,255,.3),transparent),
    radial-gradient(1.5px 1.5px at 80% 20%,rgba(255,255,255,.4),transparent),
    radial-gradient(1px 1px at 40% 90%,rgba(255,255,255,.25),transparent),
    radial-gradient(1.5px 1.5px at 15% 60%,rgba(255,255,255,.3),transparent);
  opacity:.6;animation:twinkle 6s ease-in-out infinite;
  pointer-events:none;
}
@keyframes twinkle{0%,100%{opacity:.4}50%{opacity:.8}}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr 1fr;gap:60px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:99px;
  background:rgba(255,46,99,.14);border:1px solid rgba(255,46,99,.3);
  color:#ff9ebb;font-size:12px;font-weight:600;
  margin-bottom:20px;
}
.hero-badge-dot{width:6px;height:6px;border-radius:50%;background:#ff2e63;animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.4)}}
.hero h1{
  font-size:56px;line-height:1.15;font-weight:800;letter-spacing:-.5px;
  margin-bottom:20px;
}
.hero h1 .grad{
  background:linear-gradient(120deg,#ff2e63 0%,#ff6b9d 40%,#a62e96 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:var(--text-dim);margin-bottom:32px;max-width:540px}
.hero-stats{display:flex;gap:32px;margin-bottom:36px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.hero-stat-num{font-size:24px;font-weight:800;color:var(--text)}
.hero-stat-lbl{font-size:12px;color:var(--text-mute);margin-top:2px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:99px;font-size:15px;font-weight:700;
  cursor:pointer;border:none;transition:all .25s;
  font-family:inherit;
}
.btn-primary{
  background:linear-gradient(135deg,#ff2e63 0%,#a62e96 100%);
  color:#fff;box-shadow:0 8px 24px rgba(255,46,99,.4);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,46,99,.55);color:#fff}
.btn-outline{
  background:transparent;color:var(--text);border:1px solid rgba(255,255,255,.2);
}
.btn-outline:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.4)}
.hero-mock{
  position:relative;perspective:1200px;
}
.hero-phone{
  width:260px;height:540px;margin:0 auto;border-radius:38px;
  background:linear-gradient(145deg,#1d1140,#2a1a5a);
  box-shadow:0 40px 80px rgba(0,0,0,.6),0 0 0 8px rgba(255,255,255,.03),inset 0 0 0 1px rgba(255,255,255,.08);
  padding:14px;position:relative;
  transform:rotateY(-8deg) rotateX(4deg);
  animation:float 5s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:rotateY(-8deg) rotateX(4deg) translateY(0)}50%{transform:rotateY(-8deg) rotateX(4deg) translateY(-14px)}}
.hero-phone-screen{
  width:100%;height:100%;border-radius:26px;overflow:hidden;position:relative;
  background:linear-gradient(160deg,#ff2e63 0%,#a62e96 60%,#8b5cf6 100%);
}
.hero-phone-screen img{
  width:100%;height:100%;object-fit:cover;opacity:.9;
}
.hero-phone-notch{
  position:absolute;top:22px;left:50%;transform:translateX(-50%);
  width:80px;height:20px;background:#0e0a1f;border-radius:12px;z-index:3;
}
.hero-phone-wave{
  position:absolute;bottom:24px;left:0;right:0;height:80px;
  display:flex;align-items:flex-end;justify-content:center;gap:3px;padding:0 20px;
  z-index:2;
}
.wave-bar{
  width:4px;background:rgba(255,255,255,.85);border-radius:2px;
  animation:wave 1.2s ease-in-out infinite;
}
@keyframes wave{0%,100%{height:20%}50%{height:90%}}
.hero-glow{
  position:absolute;width:400px;height:400px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,99,.35),transparent 70%);
  filter:blur(60px);z-index:1;
}

/* ---------- Section ---------- */
.section{padding:80px 0}
.section-alt{background:linear-gradient(180deg,transparent 0%,rgba(34,24,72,.35) 50%,transparent 100%)}
.section-head{text-align:center;margin-bottom:56px}
.section-tag{
  display:inline-block;padding:5px 14px;border-radius:99px;
  background:rgba(139,92,246,.15);color:#c4b5fd;
  font-size:12px;font-weight:600;letter-spacing:1px;
  margin-bottom:14px;
}
.section-title{
  font-size:36px;font-weight:800;letter-spacing:-.5px;
  margin-bottom:14px;line-height:1.3;
}
.section-title .grad{
  background:linear-gradient(120deg,#ff2e63,#a62e96);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.section-sub{color:var(--text-dim);font-size:15px;max-width:680px;margin:0 auto}

/* ---------- Feature Grid ---------- */
.feature-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.feature-card{
  background:linear-gradient(180deg,rgba(34,24,72,.6),rgba(26,18,54,.6));
  border:1px solid var(--line);border-radius:20px;padding:28px;
  transition:all .3s;position:relative;overflow:hidden;
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,46,99,.35);
  box-shadow:0 20px 40px rgba(255,46,99,.15);
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,#ff2e63,transparent);
  opacity:0;transition:opacity .3s;
}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;font-size:24px;
  margin-bottom:18px;
  background:linear-gradient(135deg,rgba(255,46,99,.2),rgba(139,92,246,.2));
  border:1px solid rgba(255,255,255,.1);
}
.feature-title{font-size:18px;font-weight:700;margin-bottom:8px}
.feature-desc{color:var(--text-dim);font-size:14px;line-height:1.7}

/* ---------- Big Feature 2-col ---------- */
.big-feature{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  margin-bottom:60px;
}
.big-feature.reverse .big-feature-text{order:2}
.big-feature-tag{
  display:inline-block;padding:4px 12px;border-radius:6px;
  background:rgba(0,242,192,.14);color:#7cf3dc;
  font-size:12px;font-weight:600;letter-spacing:.5px;margin-bottom:14px;
}
.big-feature h3{font-size:28px;font-weight:800;margin-bottom:14px;line-height:1.3}
.big-feature p{color:var(--text-dim);font-size:15px;margin-bottom:20px;line-height:1.8}
.big-feature ul{padding-left:0}
.big-feature li{
  padding:6px 0 6px 24px;position:relative;color:var(--text-dim);font-size:14px;
}
.big-feature li::before{
  content:"";position:absolute;left:0;top:14px;width:14px;height:14px;
  background:linear-gradient(135deg,#ff2e63,#a62e96);
  border-radius:50%;
  box-shadow:0 0 0 3px rgba(255,46,99,.15);
}
.big-feature-vis{
  height:340px;border-radius:20px;
  background:linear-gradient(135deg,rgba(255,46,99,.2),rgba(139,92,246,.15));
  border:1px solid var(--line);
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
}
.big-feature-vis::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 30% 30%,rgba(255,46,99,.2),transparent 50%),
             radial-gradient(circle at 70% 70%,rgba(139,92,246,.2),transparent 50%);
}

/* ---------- Charts / Visuals ---------- */
.chart-card{
  background:var(--panel);border-radius:16px;padding:24px;
  border:1px solid var(--line);
}
.chart-bars{display:flex;align-items:flex-end;gap:12px;height:180px;margin-top:20px}
.chart-bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;height:100%;justify-content:flex-end}
.chart-bar{
  width:100%;max-width:44px;border-radius:8px 8px 0 0;
  background:linear-gradient(180deg,#ff2e63,#a62e96);
  position:relative;
  transition:height 1.2s cubic-bezier(.22,1,.36,1);
}
.chart-bar-label{font-size:11px;color:var(--text-mute);text-align:center}
.chart-bar-value{position:absolute;top:-22px;left:50%;transform:translateX(-50%);font-size:11px;font-weight:700;color:#fff}

/* ---------- Playlist Card ---------- */
.playlist-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.playlist-card{
  background:var(--panel);border-radius:14px;padding:14px;
  border:1px solid var(--line);transition:all .3s;
}
.playlist-card:hover{transform:translateY(-4px);border-color:rgba(255,46,99,.3);box-shadow:0 12px 28px rgba(0,0,0,.4)}
.playlist-cover{
  aspect-ratio:1;border-radius:10px;
  background:linear-gradient(135deg,#ff2e63,#a62e96);
  position:relative;overflow:hidden;margin-bottom:12px;
  display:flex;align-items:center;justify-content:center;
}
.playlist-cover-num{font-size:32px;font-weight:800;color:rgba(255,255,255,.9)}
.playlist-title{font-size:14px;font-weight:700;margin-bottom:4px}
.playlist-artist{font-size:12px;color:var(--text-mute)}

/* ---------- Platforms ---------- */
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.platform-card{
  background:var(--panel);border-radius:16px;padding:24px;text-align:center;
  border:1px solid var(--line);transition:all .3s;position:relative;
}
.platform-card:hover{transform:translateY(-4px);border-color:rgba(255,46,99,.3)}
.platform-icon{width:56px;height:56px;margin:0 auto 14px;border-radius:14px;background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center}
.platform-name{font-weight:700;font-size:15px;margin-bottom:4px}
.platform-desc{font-size:12px;color:var(--text-mute)}
.platform-os{font-size:11px;color:var(--accent);margin-top:8px}

/* ---------- News Grid ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  background:var(--panel);border-radius:16px;overflow:hidden;
  border:1px solid var(--line);transition:all .3s;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(255,46,99,.3)}
.news-thumb{height:160px;background:linear-gradient(135deg,#ff2e63,#a62e96);position:relative;overflow:hidden}
.news-thumb-bg{position:absolute;inset:0;background:radial-gradient(circle at 50% 50%,rgba(255,255,255,.15),transparent 60%)}
.news-thumb-tag{
  position:absolute;top:12px;left:12px;padding:4px 10px;border-radius:6px;
  background:rgba(0,0,0,.6);color:#fff;font-size:11px;font-weight:600;
  backdrop-filter:blur(6px);
}
.news-body{padding:18px}
.news-date{font-size:11px;color:var(--text-mute);margin-bottom:8px}
.news-title{font-size:15px;font-weight:700;margin-bottom:8px;line-height:1.5}
.news-excerpt{font-size:13px;color:var(--text-dim);line-height:1.6}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.steps::before{
  content:"";position:absolute;top:36px;left:12%;right:12%;height:2px;
  background:linear-gradient(90deg,transparent,rgba(255,46,99,.4),rgba(166,46,150,.4),transparent);
  z-index:0;
}
.step-card{position:relative;z-index:1;text-align:center;padding:0 12px}
.step-num{
  width:72px;height:72px;margin:0 auto 20px;border-radius:50%;
  background:linear-gradient(135deg,#ff2e63,#a62e96);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;font-weight:800;color:#fff;
  box-shadow:0 12px 28px rgba(255,46,99,.4);
  border:4px solid rgba(255,255,255,.06);
}
.step-title{font-weight:700;font-size:16px;margin-bottom:8px}
.step-desc{font-size:13px;color:var(--text-dim);line-height:1.6}

/* ---------- Testimonials ---------- */
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.testimonial-card{
  background:var(--panel);border-radius:16px;padding:24px;
  border:1px solid var(--line);
}
.testimonial-quote{font-size:14px;color:var(--text-dim);line-height:1.8;margin-bottom:18px;position:relative;padding-left:20px}
.testimonial-quote::before{
  content:"“";position:absolute;left:0;top:-10px;font-size:44px;
  color:var(--brand);font-family:Georgia,serif;line-height:1;
}
.testimonial-user{display:flex;align-items:center;gap:12px}
.testimonial-avatar{
  width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,#ff2e63,#a62e96);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;color:#fff;
}
.testimonial-name{font-weight:600;font-size:14px}
.testimonial-tag{font-size:11px;color:var(--text-mute)}
.testimonial-stars{color:var(--yellow);font-size:12px;margin-top:2px}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--panel);border-radius:12px;
  border:1px solid var(--line);margin-bottom:12px;overflow:hidden;
  transition:all .25s;
}
.faq-item.open{border-color:rgba(255,46,99,.35);background:rgba(34,24,72,.7)}
.faq-q{
  padding:20px 24px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  font-weight:600;font-size:15px;
}
.faq-icon{
  width:24px;height:24px;border-radius:6px;background:rgba(255,46,99,.15);
  display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--brand);
  transition:transform .3s;flex-shrink:0;margin-left:12px;
}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 20px;color:var(--text-dim);font-size:14px;line-height:1.8}
.faq-item.open .faq-a{max-height:400px}

/* ---------- Comparison Table ---------- */
.cmp-table{width:100%;border-collapse:separate;border-spacing:0;background:var(--panel);border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.cmp-table th,.cmp-table td{padding:16px 18px;text-align:center;font-size:14px}
.cmp-table th{background:rgba(255,255,255,.03);font-weight:600;color:var(--text-dim);border-bottom:1px solid var(--line)}
.cmp-table td{border-bottom:1px solid var(--line);color:var(--text-dim)}
.cmp-table tr:last-child td{border-bottom:none}
.cmp-table td:first-child,.cmp-table th:first-child{text-align:left;color:var(--text);font-weight:600}
.cmp-table .cmp-hi{color:var(--text);font-weight:700;background:rgba(255,46,99,.08)}
.cmp-table .yes{color:var(--accent);font-weight:700}
.cmp-table .no{color:var(--text-mute);opacity:.5}

/* ---------- CTA ---------- */
.cta-box{
  padding:60px 40px;border-radius:24px;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#2a1650 0%,#3d1a6b 50%,#5e1e80 100%);
  border:1px solid rgba(255,46,99,.25);
}
.cta-box::before{
  content:"";position:absolute;top:-50%;right:-20%;width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,99,.4),transparent 60%);
  filter:blur(40px);
}
.cta-box-inner{position:relative;z-index:2}
.cta-box h2{font-size:32px;font-weight:800;margin-bottom:14px}
.cta-box p{color:var(--text-dim);margin-bottom:28px;font-size:15px}

/* ---------- Footer ---------- */
.footer{
  padding:60px 0 30px;background:linear-gradient(180deg,#0a0716,#050310);
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.footer-brand-desc{color:var(--text-dim);font-size:13px;line-height:1.7;margin-top:12px;max-width:280px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--text)}
.footer-col ul li{margin-bottom:8px}
.footer-col a{color:var(--text-dim);font-size:13px;transition:color .2s}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:12px;color:var(--text-mute);
}
.footer-bottom-nav{display:flex;gap:20px}
.footer-bottom-nav a{color:var(--text-mute)}
.footer-bottom-nav a:hover{color:var(--brand)}
.footer-disclaimer{
  padding:14px 18px;background:rgba(255,46,99,.06);border:1px solid rgba(255,46,99,.2);
  border-radius:10px;font-size:12px;color:var(--text-dim);line-height:1.7;
  margin-bottom:24px;
}

/* ---------- Download Modal ---------- */
.modal-overlay{
  position:fixed;inset:0;z-index:1000;
  background:rgba(0,0,0,.82);backdrop-filter:blur(10px);
  display:none;align-items:center;justify-content:center;padding:20px;
}
.modal-overlay.show{display:flex;animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{
  width:100%;max-width:480px;background:linear-gradient(160deg,#221848,#160c2e);
  border:1px solid rgba(255,46,99,.25);border-radius:22px;padding:32px;
  position:relative;box-shadow:0 40px 100px rgba(0,0,0,.7);
  animation:slideUp .35s cubic-bezier(.22,1,.36,1);
}
@keyframes slideUp{from{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}
.modal-close{
  position:absolute;top:14px;right:14px;
  width:32px;height:32px;border-radius:50%;
  background:rgba(255,255,255,.08);border:none;color:#fff;font-size:20px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.modal-close:hover{background:rgba(255,255,255,.16)}
.modal-header{text-align:center;margin-bottom:24px}
.modal-icon{
  width:56px;height:56px;margin:0 auto 14px;border-radius:16px;
  background:linear-gradient(135deg,#ff2e63,#a62e96);
  display:flex;align-items:center;justify-content:center;font-size:26px;
  box-shadow:0 8px 20px rgba(255,46,99,.4);
}
.modal-title{font-size:22px;font-weight:800;margin-bottom:6px}
.modal-subtitle{font-size:13px;color:var(--text-mute)}
.qr-frame{
  width:220px;height:220px;margin:0 auto 18px;border-radius:18px;
  background:#fff;padding:12px;position:relative;
  animation:breathe 3s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{box-shadow:0 0 0 3px rgba(255,46,99,.35),0 0 24px rgba(255,46,99,.25);transform:scale(1)}
  50%{box-shadow:0 0 0 8px rgba(255,46,99,.6),0 0 44px rgba(255,46,99,.55);transform:scale(1.02)}
}
.qr-frame img{width:100%;height:100%;object-fit:contain;border-radius:8px}
.modal-tip{text-align:center;color:var(--text-dim);font-size:14px;margin-bottom:18px;line-height:1.7}
.modal-tip b{color:var(--brand)}
.modal-features{margin-bottom:18px}
.modal-feature{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;background:rgba(0,242,192,.06);border:1px solid rgba(0,242,192,.15);
  border-radius:10px;margin-bottom:8px;
  font-size:13px;color:var(--text-dim);
}
.modal-feature-icon{color:var(--accent);font-size:14px;flex-shrink:0}
.modal-warning{
  padding:12px 14px;background:rgba(255,209,102,.08);border:1px solid rgba(255,209,102,.25);
  border-radius:10px;font-size:12px;color:#ffe0a3;line-height:1.7;
}
.modal-warning-icon{margin-right:6px}
.modal-copy-row{
  display:flex;gap:8px;margin-top:16px;padding:10px;
  background:rgba(0,0,0,.3);border-radius:10px;
  border:1px solid var(--line);align-items:center;
}
.modal-copy-text{
  flex:1;font-family:"Courier New",monospace;font-size:12px;
  color:var(--text-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.modal-copy-btn{
  padding:6px 14px;border-radius:6px;background:rgba(255,46,99,.2);
  color:#ff9ebb;border:1px solid rgba(255,46,99,.3);
  font-size:12px;cursor:pointer;font-weight:600;flex-shrink:0;
}
.modal-copy-btn:hover{background:rgba(255,46,99,.3)}

/* ---------- Download Page ---------- */
.dl-hero{padding:130px 0 60px;background:linear-gradient(180deg,#0e0a1f 0%,#160c2e 100%);text-align:center}
.dl-hero h1{font-size:42px;font-weight:800;margin-bottom:14px}
.dl-hero p{color:var(--text-dim);max-width:600px;margin:0 auto 30px}
.dl-platforms{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:900px;margin:0 auto}
.dl-platform-btn{
  background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:24px 16px;
  cursor:pointer;transition:all .3s;text-align:center;
}
.dl-platform-btn:hover{transform:translateY(-4px);border-color:rgba(255,46,99,.4);box-shadow:0 12px 28px rgba(255,46,99,.2)}
.dl-platform-btn.active{border-color:var(--brand);background:rgba(255,46,99,.08)}
.dl-platform-icon{width:44px;height:44px;margin:0 auto 12px;background:rgba(255,255,255,.06);border-radius:12px;display:flex;align-items:center;justify-content:center}
.dl-platform-name{font-weight:700;font-size:14px;margin-bottom:4px}
.dl-platform-meta{font-size:11px;color:var(--text-mute)}

.dl-box{
  background:var(--panel);border:1px solid var(--line);border-radius:22px;
  padding:36px;margin:20px auto;max-width:1000px;
}
.dl-box-inner{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center}
.dl-info h2{font-size:24px;font-weight:800;margin-bottom:8px}
.dl-info-meta{color:var(--text-mute);font-size:13px;margin-bottom:20px}
.dl-features{margin-bottom:20px}
.dl-feature{
  display:flex;gap:12px;padding:10px 0;color:var(--text-dim);font-size:14px;line-height:1.6;
}
.dl-feature-icon{color:var(--accent);flex-shrink:0;margin-top:2px}
.dl-buttons{display:flex;flex-direction:column;gap:12px}
.dl-btn{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-radius:14px;cursor:pointer;
  font-weight:700;font-size:15px;transition:all .25s;border:none;font-family:inherit;
}
.dl-btn-quark{
  background:linear-gradient(135deg,#00c2ff,#0088cc);color:#fff;
  box-shadow:0 8px 20px rgba(0,194,255,.35);
}
.dl-btn-quark:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,194,255,.5)}
.dl-btn-baidu{
  background:linear-gradient(135deg,#ff2e63,#a62e96);color:#fff;
  box-shadow:0 8px 20px rgba(255,46,99,.35);
}
.dl-btn-baidu:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,46,99,.5)}
.dl-btn-brand{font-weight:800}
.dl-btn-note{font-size:12px;opacity:.85;font-weight:400}
.dl-qr-inline{
  display:flex;flex-direction:column;align-items:center;gap:12px;
  background:rgba(255,255,255,.02);padding:20px;border-radius:16px;
  border:1px dashed rgba(255,255,255,.12);
}
.dl-qr-inline .qr-frame{width:160px;height:160px}
.dl-qr-cap{font-size:12px;color:var(--text-mute);text-align:center}

/* ---------- About Page ---------- */
.about-hero{padding:130px 0 60px;background:linear-gradient(180deg,#0e0a1f 0%,#160c2e 100%);text-align:center}
.about-hero h1{font-size:42px;font-weight:800;margin-bottom:14px}
.about-hero p{color:var(--text-dim);max-width:640px;margin:0 auto}
.about-info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.about-info-card{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:22px;text-align:center;
}
.about-info-num{font-size:30px;font-weight:800;color:var(--brand);margin-bottom:6px}
.about-info-lbl{font-size:13px;color:var(--text-dim)}
.about-block{
  background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:32px;margin-bottom:24px;
}
.about-block h3{font-size:22px;font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.about-block p{color:var(--text-dim);font-size:14px;line-height:1.9;margin-bottom:12px}
.about-block h4{font-size:16px;font-weight:700;margin:18px 0 10px;color:var(--brand)}

/* ---------- Breadcrumb ---------- */
.breadcrumb{padding:96px 0 20px;color:var(--text-mute);font-size:13px}
.breadcrumb a{color:var(--text-mute)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .cur{color:var(--text-dim)}

/* ---------- Utility ---------- */
.text-grad{background:linear-gradient(120deg,#ff2e63,#a62e96);-webkit-background-clip:text;background-clip:text;color:transparent}
.mono{font-family:"Courier New",monospace}
.text-center{text-align:center}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .nav{display:none}
  .hamburger{display:block}
  .hero{padding:100px 0 60px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:38px}
  .hero-mock{display:none}
  .feature-grid,.news-grid,.testimonial-grid{grid-template-columns:repeat(2,1fr)}
  .big-feature{grid-template-columns:1fr;gap:30px}
  .big-feature.reverse .big-feature-text{order:1}
  .big-feature-vis{height:220px}
  .platform-grid,.playlist-grid,.dl-platforms,.about-info-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps::before{display:none}
  .dl-box-inner{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .section-title{font-size:28px}
}
@media(max-width:560px){
  .hero h1{font-size:30px}
  .hero-stats{gap:18px;flex-wrap:wrap}
  .feature-grid,.news-grid,.testimonial-grid,.steps{grid-template-columns:1fr}
  .platform-grid,.playlist-grid,.dl-platforms,.about-info-grid,.footer-grid{grid-template-columns:1fr}
  .container{padding:0 16px}
  .section{padding:60px 0}
}