:root{
  color-scheme:light;
  --bg:#eef3fa;
  --bg2:#f9fbff;
  --ink:#0a0f1a;
  --ink2:#4a5568;
  --ink3:#6f7a8f;
  --glass:rgba(255,255,255,.62);
  --glass2:rgba(255,255,255,.40);
  --line:rgba(255,255,255,.90);
  --edge:rgba(15,23,42,.07);
  --hair:rgba(15,23,42,.08);
  --blue:#0a84ff;
  --purple:#af52de;
  --pink:#ff2d55;
  --green:#34c759;
  --orange:#ff9f0a;
  --blue-soft:rgba(10,132,255,.12);
  --green-soft:rgba(52,199,89,.14);
  --shadow:0 30px 70px -40px rgba(15,23,42,.48);
  --shadow2:0 18px 50px -30px rgba(15,23,42,.4);
  --orb1:#4fa8ff; --orb2:#a78bfa; --orb3:#ff8fab;
  --w1:rgba(10,132,255,.13); --w2:rgba(175,82,222,.12); --w3:rgba(255,45,85,.08);
  --radius:30px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","MiSans","HarmonyOS Sans SC","PingFang SC","Noto Sans SC",system-ui,sans-serif;
  --mono:"SF Mono",ui-monospace,"Roboto Mono",Menlo,monospace;
}
@media (prefers-color-scheme: dark){
  html:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#07080d; --bg2:#0b0d14;
    --ink:#f3f6ff; --ink2:#a7b0c4; --ink3:#7c859b;
    --glass:rgba(28,30,40,.55); --glass2:rgba(255,255,255,.055);
    --line:rgba(255,255,255,.12); --edge:rgba(255,255,255,.06); --hair:rgba(255,255,255,.09);
    --blue-soft:rgba(10,132,255,.18);
    --green-soft:rgba(52,199,89,.18);
    --shadow:0 34px 90px -40px #000; --shadow2:0 20px 60px -30px #000;
    --orb1:#1d4ed8; --orb2:#6d28d9; --orb3:#be185d;
    --w1:rgba(29,78,216,.22); --w2:rgba(109,40,217,.20); --w3:rgba(190,24,93,.14);
  }
}
html[data-theme="dark"]{
  color-scheme:dark;
  --bg:#07080d; --bg2:#0b0d14;
  --ink:#f3f6ff; --ink2:#a7b0c4; --ink3:#7c859b;
  --glass:rgba(28,30,40,.55); --glass2:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.12); --edge:rgba(255,255,255,.06); --hair:rgba(255,255,255,.09);
  --blue-soft:rgba(10,132,255,.18);
  --green-soft:rgba(52,199,89,.18);
  --shadow:0 34px 90px -40px #000; --shadow2:0 20px 60px -30px #000;
  --orb1:#1d4ed8; --orb2:#6d28d9; --orb3:#be185d;
  --w1:rgba(29,78,216,.22); --w2:rgba(109,40,217,.20); --w3:rgba(190,24,93,.14);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth;background:var(--bg)}
body{
  margin:0;color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.65;
  background:linear-gradient(180deg,var(--bg2) 0%,var(--bg) 46%,var(--bg) 100%);
  overflow-x:hidden;transition:background .4s,color .3s;-webkit-font-smoothing:antialiased;
}
.bg{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg::after{content:"";position:absolute;inset:0;background:
  radial-gradient(80% 55% at 15% 0%,var(--w1),transparent 62%),
  radial-gradient(70% 50% at 100% 4%,var(--w2),transparent 60%),
  radial-gradient(60% 45% at 50% 104%,var(--w3),transparent 62%);}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.62}
.a{width:560px;height:560px;left:-200px;top:-220px;background:radial-gradient(circle,var(--orb1),transparent 68%)}
.b{width:520px;height:520px;right:-220px;top:40px;background:radial-gradient(circle,var(--orb2),transparent 68%)}
.c{width:480px;height:480px;left:30%;bottom:-260px;background:radial-gradient(circle,var(--orb3),transparent 68%);opacity:.45}
.grain{position:absolute;inset:0;opacity:.035;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E")}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:calc(14px + env(safe-area-inset-top));left:50%;transform:translateX(-50%);
  z-index:20;width:min(1120px,calc(100% - 28px));
  display:flex;align-items:center;gap:22px;padding:10px 14px 10px 12px;
  border:1px solid var(--line);border-radius:22px;
  background:var(--glass);backdrop-filter:blur(30px) saturate(180%);-webkit-backdrop-filter:blur(30px) saturate(180%);
  box-shadow:0 0 0 .5px var(--edge),0 18px 50px -30px rgba(15,23,42,.5),inset 0 1px 0 rgba(255,255,255,.6);
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;color:#fff;font-weight:700;font-size:17px;
  background:linear-gradient(145deg,#0a84ff,#5e5ce6 55%,#af52de);
  box-shadow:0 10px 24px -12px rgba(10,132,255,.8),inset 0 1px 0 rgba(255,255,255,.45)}
.mark.big{width:64px;height:64px;border-radius:20px;font-size:28px;margin:0 auto 18px}
.brand-t{font-weight:700;font-size:15px;line-height:1.2;display:flex;flex-direction:column}
.brand-t em{font-style:normal;font-size:7.5px;letter-spacing:.22em;color:var(--ink3);font-weight:600;margin-top:3px}
.links{display:flex;gap:4px;margin-left:auto}
.links a{padding:7px 12px;border-radius:10px;color:var(--ink2);text-decoration:none;font-size:13px;transition:.2s}
.links a:hover{background:var(--glass2);color:var(--ink)}
.nav-act{display:flex;align-items:center;gap:8px}
.icon{width:36px;height:36px;border-radius:50%;border:1px solid var(--hair);background:var(--glass2);color:var(--ink2);display:grid;place-items:center;cursor:pointer;transition:.2s}
.icon:hover{color:var(--blue)}
.icon svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.icon .sun{display:none}
html[data-theme="dark"] .icon .sun{display:block}
html[data-theme="dark"] .icon .moon{display:none}
@media (prefers-color-scheme: dark){
  html:not([data-theme="light"]) .icon .sun{display:block}
  html:not([data-theme="light"]) .icon .moon{display:none}
}
.gh{display:flex;align-items:center;gap:7px;padding:9px 14px;border-radius:12px;text-decoration:none;font-size:12.5px;font-weight:600;color:#fff;
  background:linear-gradient(118deg,#0a84ff,#3f6cff);box-shadow:0 10px 24px -14px rgba(10,132,255,.9)}
.gh svg{width:16px;height:16px;fill:currentColor;stroke:none}

/* ---------- 容器 / 通用 ---------- */
main{position:relative;z-index:1}
.hero,.section,.stats,.final{width:min(1120px,calc(100% - 40px));margin:0 auto}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.16em;font-weight:700;color:var(--blue);text-transform:uppercase}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px var(--blue-soft)}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:0}
code{font-family:var(--mono);font-size:.86em;padding:2px 6px;border-radius:6px;background:var(--glass2);border:1px solid var(--hair);color:var(--ink2)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:15px;text-decoration:none;font-size:14px;font-weight:650;border:1px solid var(--hair);color:var(--ink);background:var(--glass2);transition:transform .2s,box-shadow .2s}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn:active{transform:scale(.98)}
.btn.blue{color:#fff;border-color:transparent;background:linear-gradient(118deg,#0a84ff,#3f6cff);box-shadow:0 16px 34px -18px rgba(10,132,255,.85)}
.btn.glass{background:var(--glass);backdrop-filter:blur(20px);box-shadow:0 0 0 .5px var(--edge)}
.btn.big{padding:16px 30px;font-size:15px;border-radius:16px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.cta.center{justify-content:center}
.tiny{font-size:11px;color:var(--ink3);margin:14px 0 0}
.text-link{display:inline-flex;align-items:center;gap:8px;margin-top:22px;color:var(--blue);text-decoration:none;font-weight:650;font-size:13px}
.text-link span{transition:transform .2s}
.text-link:hover span{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{display:grid;grid-template-columns:1.04fr .96fr;gap:30px;align-items:center;padding:150px 0 20px;min-height:760px}
.hero-copy h1{font-size:clamp(46px,6.2vw,78px);font-weight:750;margin:18px 0 20px}
.hero-copy h1 span{background:linear-gradient(118deg,#0a84ff,#7d5cff 50%,#ff2d55);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:16px;color:var(--ink2);max-width:540px;margin:0}
.hero-visual{position:relative;height:600px;min-width:0}
.phone{position:absolute;width:242px;height:524px;border-radius:38px;background:#0b0d14;border:7px solid #11131c;
  box-shadow:0 40px 80px -30px rgba(15,23,42,.55),inset 0 0 0 1px rgba(255,255,255,.15);overflow:hidden}
.phone img{width:100%;height:100%;object-fit:cover;display:block;border-radius:30px}
.p1{left:4%;top:26px;transform:rotate(-3deg);z-index:2}
.p2{right:2%;top:86px;transform:rotate(3deg)}
.float{position:absolute;z-index:3;padding:11px 14px;border-radius:16px;background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(26px);box-shadow:0 18px 40px -24px rgba(15,23,42,.5);display:flex;flex-direction:column;gap:1px}
.float b{font-size:18px;letter-spacing:-.02em}
.float span{font-size:9.5px;color:var(--ink3);letter-spacing:.04em}
.f1{left:0;bottom:70px}
.f2{right:0;top:44px}
.f1 b{color:var(--green)}
.f2 b{color:var(--blue)}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--hair);border:1px solid var(--line);border-radius:24px;overflow:hidden;
  box-shadow:var(--shadow2),inset 0 1px 0 rgba(255,255,255,.5)}
.stats div{background:var(--glass);padding:22px 18px;backdrop-filter:blur(24px)}
.stats b{display:block;font-size:30px;letter-spacing:-.03em}
.stats b span{font-size:13px;color:var(--ink3);font-weight:500;margin-left:2px}
.stats em{display:block;font-style:normal;font-size:11px;color:var(--ink3);margin-top:3px}

/* ---------- 区块 ---------- */
.section{padding:96px 0 0}
.sec-head{max-width:700px;margin-bottom:38px}
.sec-head h2{font-size:clamp(30px,4.2vw,46px);font-weight:740;margin:14px 0 12px}
.sec-head p{color:var(--ink2);margin:0;font-size:15px}
.sec-head.center{text-align:center;margin-left:auto;margin-right:auto}
.grid{display:grid;gap:16px}
.features{grid-template-columns:repeat(3,1fr)}
.card{background:var(--glass);border:1px solid var(--line);border-radius:24px;
  backdrop-filter:blur(28px) saturate(170%);box-shadow:0 0 0 .5px var(--edge),var(--shadow2),inset 0 1px 0 rgba(255,255,255,.55)}
.features .card{padding:24px;transition:transform .3s,box-shadow .3s}
.features .card:hover{transform:translateY(-4px);box-shadow:0 0 0 .5px var(--edge),var(--shadow),inset 0 1px 0 rgba(255,255,255,.55)}
.ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);margin-bottom:16px}
.ico svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.features h3{font-size:16px;margin:0 0 8px}
.features p{font-size:13px;line-height:1.75;color:var(--ink2);margin:0}

/* ---------- 原理 ---------- */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:50px;align-items:center}
.split .sec-head{margin-bottom:0}
.lock-card{padding:16px}
.lock-row{display:flex;gap:16px;padding:18px;border-radius:18px;transition:background .2s}
.lock-row + .lock-row{border-top:1px solid var(--hair)}
.lock-row:hover{background:var(--glass2)}
.num{width:38px;height:38px;border-radius:50%;flex:none;display:grid;place-items:center;font-family:var(--mono);font-size:11px;font-weight:700;color:#fff;
  background:linear-gradient(145deg,#0a84ff,#7d5cff)}
.lock-row b{font-size:14px}
.lock-row p{margin:3px 0 0;font-size:12.5px;color:var(--ink2);line-height:1.7}
.lock-note{margin:8px 0 2px;padding:14px 18px;border-radius:14px;background:var(--blue-soft);color:var(--ink2);font-size:12px}

/* ---------- 截图 ---------- */
.shots{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.shot{position:relative;display:block;border-radius:24px;overflow:hidden;border:1px solid var(--line);background:var(--glass2);
  text-decoration:none;box-shadow:var(--shadow2);transition:transform .3s,box-shadow .3s}
.shot:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.shot img{width:100%;display:block;aspect-ratio:3/4;object-fit:cover}
.shot span{position:absolute;left:14px;bottom:14px;padding:7px 12px;border-radius:10px;font-size:11px;font-weight:600;color:var(--ink);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(20px)}

/* ---------- 安装 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{padding:24px}
.step b{display:block;font-family:var(--mono);font-size:12px;color:var(--blue);margin-bottom:12px}
.step h3{font-size:16px;margin:0 0 8px}
.step p{font-size:13px;color:var(--ink2);margin:0;line-height:1.75}
.install-cta{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:34px;flex-wrap:wrap}
.install-cta span{font-size:11.5px;color:var(--ink3)}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:10px;max-width:900px}
.faq details{background:var(--glass);border:1px solid var(--line);border-radius:18px;padding:0 18px;
  backdrop-filter:blur(24px);box-shadow:0 0 0 .5px var(--edge)}
.faq summary{cursor:pointer;list-style:none;padding:17px 30px 17px 0;font-size:14px;font-weight:650;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:14px;font-size:19px;color:var(--ink3);transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--blue)}
.faq p{margin:0 0 18px;font-size:13px;color:var(--ink2);line-height:1.8}

/* ---------- 结尾 ---------- */
.final{padding:90px 0 20px}
.final-card{text-align:center;padding:46px 24px;border-radius:34px;background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(30px);box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.55)}
.final-card h2{font-size:32px;margin:0 0 8px}
.final-card p{color:var(--ink2);margin:0;font-size:13.5px}
.final-card .cta{margin-top:24px}
.foot{width:min(1120px,calc(100% - 40px));margin:0 auto;padding:34px 0 40px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:11px;color:var(--ink3);border-top:1px solid var(--hair);margin-top:60px}

/* ---------- 灯箱 ---------- */
.lightbox{position:fixed;inset:0;z-index:50;background:rgba(5,6,10,.72);backdrop-filter:blur(16px);display:none;align-items:center;justify-content:center;padding:24px}
.lightbox.on{display:flex}
.lightbox img{max-width:min(92vw,760px);max-height:88vh;border-radius:20px;box-shadow:0 40px 100px -30px #000}
.lightbox button{position:absolute;top:18px;right:18px;width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;font-size:22px;cursor:pointer}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.8,.2,1),transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

@media (max-width:980px){
  .hero{grid-template-columns:1fr;padding-top:130px;min-height:0;gap:10px}
  .hero-visual{height:540px;max-width:560px;margin:0 auto;width:100%}
  .split{grid-template-columns:1fr;gap:30px}
  .features{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .links{display:none}
  .nav{gap:10px;padding-right:10px}
  .brand-t em{display:none}
  .gh span{display:none}
  .gh{padding:9px 11px}
  .hero{padding-top:118px}
  .hero-copy h1{font-size:44px}
  .hero-visual{height:468px}
  .phone{width:164px;height:355px;border-radius:28px;border-width:5px}
  .phone img{border-radius:23px}
  .p1{left:1%;top:16px}.p2{right:1%;top:56px}
  .f1{left:0;bottom:16px}.f2{right:0;top:2px}
  .float{padding:9px 11px;border-radius:13px}
  .float b{font-size:15px}.float span{font-size:8.5px}
  .stats b{font-size:24px}
  .features{grid-template-columns:1fr}
  .shots{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .foot{flex-direction:column}
  .section{padding-top:74px}
  .cta .btn{flex:1}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* v2.1 release banner */
.release-bar{display:flex;align-items:center;gap:12px;max-width:1120px;margin:84px auto 0;padding:12px 16px;border-radius:16px;
  border:1px solid var(--hairline);background:linear-gradient(110deg,rgba(255,255,255,.86),rgba(255,255,255,.66));
  box-shadow:0 18px 40px -28px rgba(15,23,42,.35);font-size:13px;color:var(--text)}
.release-bar .rb-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(52,199,89,.16);flex:none}
.release-bar div{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}
.release-bar b{font-size:13px;color:var(--text)}
.release-bar em{font-style:normal;font-size:11.5px;color:var(--text-2);opacity:1}
.release-bar a{flex:none;font-size:12px;font-weight:700;color:var(--blue);text-decoration:none;white-space:nowrap}
.release-bar a:hover{text-decoration:underline}
@media (max-width:720px){
  .release-bar{margin:76px 16px 0;padding:11px 13px}
  .release-bar em{display:none}
}
/* download counter */
.tiny #dlTotal{color:var(--text);font-weight:750;font-variant-numeric:tabular-nums}
/* ---------- background music ---------- */
.music-btn{position:relative}
.music-btn .eq{position:absolute;right:5px;bottom:5px;display:none;align-items:flex-end;gap:1px;height:9px}
.music-btn .eq b{display:block;width:2px;background:var(--blue);border-radius:2px;animation:eq 0.9s ease-in-out infinite}
.music-btn .eq b:nth-child(1){height:4px;animation-delay:0s}
.music-btn .eq b:nth-child(2){height:8px;animation-delay:.15s}
.music-btn .eq b:nth-child(3){height:6px;animation-delay:.3s}
.music-btn.playing .eq{display:flex}
.music-btn.playing{color:var(--blue);border-color:color-mix(in srgb,var(--blue) 35%,transparent)}
@keyframes eq{0%,100%{transform:scaleY(.45)}50%{transform:scaleY(1)}}

.music-panel{
  position:fixed;z-index:80;top:78px;right:max(16px,calc((100vw - 1180px)/2));
  width:300px;padding:14px;border-radius:20px;
  background:var(--card-solid,var(--card));border:1px solid var(--line);
  box-shadow:0 18px 50px rgba(0,0,0,.18);backdrop-filter:blur(24px);
  animation:musicIn .18s ease-out;
}
@keyframes musicIn{from{opacity:0;transform:translateY(-6px) scale(.98)}to{opacity:1;transform:none}}
.music-panel[hidden]{display:none}
.music-head{display:flex;align-items:center;gap:10px}
.music-art{display:grid;place-items:center;flex:0 0 38px;height:38px;border-radius:12px;color:#fff;font-size:17px;font-weight:800;
  background:linear-gradient(135deg,var(--blue),#a855f7);box-shadow:0 8px 18px rgba(59,130,246,.25)}
.music-info{min-width:0;flex:1;line-height:1.25}
.music-info b{display:block;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.music-info em{display:block;font-size:11px;font-style:normal;color:var(--text-3);margin-top:2px}
.music-close{width:26px;height:26px;border:0;border-radius:8px;background:transparent;color:var(--text-3);font-size:18px;cursor:pointer}
.music-close:hover{background:var(--soft);color:var(--text)}
.music-controls{display:flex;align-items:center;justify-content:center;gap:18px;margin:12px 0 10px}
.music-controls button{width:34px;height:34px;border:1px solid var(--line);border-radius:50%;background:var(--soft);color:var(--text);display:grid;place-items:center;cursor:pointer}
.music-controls button:hover{transform:translateY(-1px)}
.music-controls svg{width:17px;height:17px;fill:currentColor;stroke:currentColor;stroke-width:0}
.music-controls .music-play{width:44px;height:44px;background:var(--blue);border-color:transparent;color:#fff;box-shadow:0 8px 20px rgba(59,130,246,.3)}
.music-play .pause{display:none}
.music-play.playing .play{display:none}
.music-play.playing .pause{display:block}
.music-meta{display:flex;justify-content:space-between;font-size:10.5px;color:var(--text-3);border-top:1px solid var(--line);padding-top:8px}
@media(max-width:640px){
  .music-panel{top:70px;right:12px;left:12px;width:auto}
  .music-controls{gap:14px}
}

.music-controls button:disabled{opacity:.35;cursor:not-allowed;transform:none}