:root{
  --bg:#0A0C11;
  --bg-2:#0D1017;
  --panel:#12161F;
  --panel-2:#171C27;
  --line:rgba(148,170,205,.14);
  --blue:#2F7DFF;
  --blue-2:#5EA0FF;
  --cyan:#4BE1FF;
  --text:#E8EEF8;
  --muted:#8C97AB;
  --mono:"SFMono-Regular",Consolas,"Courier New",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.85;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.3;font-weight:800}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 26px}

/* ============ 顶栏：石墨玻璃 + 电光蓝 ============ */
.top{
  position:sticky;top:0;z-index:90;background:rgba(10,12,17,.84);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.top.on{box-shadow:0 10px 30px rgba(0,0,0,.5);border-bottom-color:rgba(94,160,255,.28)}
.top-in{display:flex;align-items:center;height:68px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand img{width:36px;height:36px;border:1px solid rgba(94,160,255,.32);border-radius:8px;background:#fff}
.brand-t b{display:block;font-size:17px;letter-spacing:1.6px;line-height:1.2}
.brand-t small{display:block;font-size:9.6px;letter-spacing:1.6px;color:var(--muted);margin-top:3px}
.nav{display:flex;gap:22px;margin-left:auto;font-size:13px;font-weight:600;color:#A9B4C7}
.nav a{position:relative;padding:5px 0;transition:color .2s ease}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));transition:width .24s ease;
}
.nav a:hover{color:#fff}
.nav a:hover::after{width:100%}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;color:var(--text);padding:4px}
.cta{
  flex:none;position:relative;background:linear-gradient(100deg,var(--blue),#1F5FD6);
  color:#fff;font-size:12.6px;font-weight:800;letter-spacing:.8px;
  padding:10px 20px;border-radius:4px;
  box-shadow:0 0 0 1px rgba(94,160,255,.5),0 6px 22px rgba(47,125,255,.36);
}
.cta:hover{background:linear-gradient(100deg,#4C93FF,#2F7DFF);box-shadow:0 0 0 1px rgba(94,160,255,.8),0 8px 26px rgba(47,125,255,.5)}

/* ============ 英雄区：横向速度 ============ */
.hero{
  position:relative;overflow:hidden;padding:58px 0 0;
  background:
    radial-gradient(760px 420px at 10% -8%,rgba(47,125,255,.3),transparent 68%),
    radial-gradient(520px 360px at 92% 12%,rgba(75,225,255,.14),transparent 70%),
    linear-gradient(180deg,#0B0E16 0%,#080A10 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.035) 0 1px,transparent 1px 14px);
  -webkit-mask-image:linear-gradient(90deg,#000 0%,transparent 62%);
  mask-image:linear-gradient(90deg,#000 0%,transparent 62%);
}
.hero::after{
  content:"";position:absolute;left:-12%;top:18%;width:78%;height:2px;
  background:linear-gradient(90deg,transparent,rgba(94,160,255,.55),transparent);
  transform:skewY(-7deg);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center;position:relative;z-index:1}
.kick{
  display:inline-flex;align-items:center;gap:10px;font-size:11px;letter-spacing:3px;
  color:#7FB2FF;margin-bottom:14px;font-weight:700;
}
.kick::before{
  content:"";width:26px;height:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
}
.hero h1{
  font-size:70px;letter-spacing:3px;line-height:1.06;margin-bottom:12px;
  font-weight:900;font-style:italic;transform:skewX(-8deg);transform-origin:left center;
  color:#F4F8FF;text-shadow:0 0 46px rgba(47,125,255,.4);
}
.hero h1 span{
  background:linear-gradient(100deg,#7FB2FF 10%,var(--cyan) 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lead{font-size:18px;font-weight:700;color:#D5E1F4;margin-bottom:12px;letter-spacing:.4px}
.hero .desc{font-size:14.6px;color:rgba(199,212,232,.72);max-width:545px;margin-bottom:26px;line-height:2}
.acts{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.btn{
  display:inline-flex;align-items:center;gap:8px;color:#fff;
  background:linear-gradient(100deg,var(--blue),#1D5AD0);
  padding:13px 28px;border-radius:4px;font-weight:800;font-size:15px;
  box-shadow:0 0 0 1px rgba(94,160,255,.55),0 10px 30px rgba(47,125,255,.35);
}
.btn svg{width:17px;height:17px}
.btn:hover{background:linear-gradient(100deg,#4C93FF,#2F7DFF);transform:translateY(1px)}
.ghost{
  display:inline-flex;align-items:center;padding:12px 22px;border-radius:4px;
  border:1px solid rgba(94,160,255,.45);color:#9DC4FF;font-size:13.5px;font-weight:700;
  background:rgba(47,125,255,.06);
}
.ghost:hover{background:rgba(47,125,255,.16);border-color:#7FB2FF;color:#fff}
.facts{
  display:flex;flex-wrap:wrap;gap:0;margin-top:28px;padding-top:16px;
  border-top:1px solid var(--line);
}
.facts div{padding:0 20px;border-left:1px solid var(--line)}
.facts div:first-child{padding-left:0;border-left:0}
.facts b{display:block;font-size:12.6px;color:#DCE6F7;letter-spacing:.6px}
.facts span{display:block;font-size:11px;color:rgba(160,175,199,.72);margin-top:2px}

/* 海报墙 */
.rail{position:relative;height:452px;z-index:1}
.rail::before{
  content:"";position:absolute;right:-6%;top:44%;width:118%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(75,225,255,.5),transparent);
  transform:rotate(-9deg);
}
.poster{
  position:absolute;background:#0F131B;padding:6px;margin:0;
  border:1px solid rgba(94,160,255,.3);
  box-shadow:0 24px 50px rgba(0,0,0,.6),0 0 30px rgba(47,125,255,.14);
}
.poster img{width:100%;height:100%;object-fit:cover}
.ps1{left:0;top:9%;width:45%;height:70%;transform:rotate(-4deg);z-index:2}
.ps2{left:31%;top:0;width:41%;height:62%;transform:rotate(3deg);z-index:3}
.ps3{right:1%;bottom:2%;width:38%;height:56%;transform:rotate(-2deg);z-index:4}
.live{
  position:absolute;left:2px;top:-6px;z-index:6;display:inline-flex;align-items:center;gap:7px;
  font-size:11px;letter-spacing:.6px;color:#BFD6FF;background:rgba(13,18,28,.92);
  border:1px solid rgba(94,160,255,.34);border-radius:999px;padding:4px 12px;
  box-shadow:0 8px 22px rgba(0,0,0,.45);
}
.live i{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.spark{
  position:absolute;right:-4px;top:6%;z-index:6;font-family:var(--mono);font-size:11px;
  color:#062038;background:var(--cyan);padding:3px 9px;font-weight:800;letter-spacing:1px;
  transform:skewX(-10deg);box-shadow:0 0 20px rgba(75,225,255,.5);
}

/* 横向作品带 */
.belt{
  margin-top:34px;overflow:hidden;position:relative;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:rgba(8,10,16,.72);
}
.belt-track{display:flex;width:max-content;animation:slide 38s linear infinite}
.belt:hover .belt-track{animation-play-state:paused}
.belt-group{display:flex;gap:0}
.belt-item{
  display:flex;align-items:center;gap:10px;padding:12px 22px;
  border-right:1px solid var(--line);
}
.belt-item img{width:40px;height:56px;object-fit:cover;border:1px solid rgba(94,160,255,.24);flex:none}
.belt-item span{font-size:12px;color:#9BA8BD;white-space:nowrap;letter-spacing:.4px}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ============ 通用区块 ============ */
.sec{padding:66px 0;background:var(--bg)}
.band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.hd2{display:grid;grid-template-columns:70px 1fr;gap:18px;align-items:start;margin-bottom:30px}
.hd2 .no{
  font-family:var(--mono);font-size:11px;letter-spacing:1px;color:#6FA6FF;
  border-top:2px solid var(--blue);padding-top:9px;white-space:nowrap;
}
.hd2 h2{
  font-size:30px;letter-spacing:1.4px;margin-bottom:7px;color:#F2F7FF;
  font-style:italic;transform:skewX(-4deg);transform-origin:left center;
}
.hd2 p{font-size:14.2px;color:var(--muted);max-width:800px}

/* 特色：六格 */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{
  position:relative;background:linear-gradient(160deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-top:2px solid rgba(47,125,255,.55);
  padding:20px 20px 22px;overflow:hidden;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card::after{
  content:"";position:absolute;right:-30px;top:-30px;width:90px;height:90px;
  background:radial-gradient(circle,rgba(47,125,255,.24),transparent 70%);
  opacity:0;transition:opacity .25s ease;
}
.card .n{
  display:inline-block;font-family:var(--mono);font-size:11px;color:#6FA6FF;
  letter-spacing:1.6px;padding-bottom:7px;border-bottom:1px solid rgba(47,125,255,.35);
}
.card h4{font-size:17px;letter-spacing:.8px;margin:11px 0 7px;color:#EAF2FF}
.card p{font-size:13.3px;color:#9FAABE;line-height:1.9;position:relative;z-index:1}
.card:hover{transform:translateY(-4px);border-color:rgba(94,160,255,.5);box-shadow:0 16px 34px rgba(0,0,0,.42)}
.card:hover::after{opacity:1}

/* 界面：一大 + 三行 */
.spread{display:grid;grid-template-columns:1.08fr .92fr;gap:18px;align-items:start}
.spread figure{margin:0;background:linear-gradient(160deg,var(--panel-2),var(--panel));border:1px solid var(--line)}
.big{padding:9px}
.big img{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:50% 18%}
.big figcaption{font-size:12.4px;color:#9BA8BD;padding:10px 4px 2px;letter-spacing:.6px}
.strip{display:grid;gap:14px}
.strip figure{display:grid;grid-template-columns:90px 1fr;gap:14px;align-items:center;padding:9px}
.strip img{width:90px;height:118px;object-fit:cover;object-position:50% 20%;border:1px solid rgba(94,160,255,.2)}
.strip figcaption{font-size:13px;color:#B4C0D4;letter-spacing:.3px}

/* 指南：横向五轴 */
.steps{
  list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;
  margin:6px 0 0;padding:0;position:relative;
}
.steps li{
  position:relative;border-top:2px solid rgba(94,160,255,.35);padding:20px 2px 0;
  font-size:13.2px;color:#AEBACF;line-height:1.9;
}
.steps li::before{
  content:"";position:absolute;left:0;top:-5px;width:8px;height:8px;
  background:var(--blue);box-shadow:0 0 12px rgba(47,125,255,.8);
}
.steps b{
  display:block;font-family:var(--mono);font-size:11.5px;font-weight:800;
  color:#6FA6FF;letter-spacing:1.6px;margin-bottom:6px;
}
.gnote{
  margin-top:22px;max-width:900px;border-left:3px solid var(--blue);
  background:rgba(47,125,255,.09);padding:12px 16px;font-size:12.8px;color:#A9B8CF;
}

/* 答疑 */
.qa{border-bottom:1px solid var(--line)}
.qa-item{
  display:grid;grid-template-columns:58px 1fr;gap:16px;align-items:start;
  padding:19px 0;border-top:1px solid var(--line);
}
.qa-item .qn{font-family:var(--mono);font-size:12px;color:#5E92E8;letter-spacing:1.2px;padding-top:4px}
.qa-item h3{font-size:16px;letter-spacing:.6px;margin-bottom:6px;color:#E7EFFC}
.qa-item p{font-size:13.6px;color:#9FAABE;line-height:1.9}

/* 评价 */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rev-card{
  position:relative;background:linear-gradient(160deg,var(--panel-2),var(--panel));
  border:1px solid var(--line);border-left:3px solid var(--blue);
  padding:22px 20px 14px;
}
.rev-card::before{
  content:"\201C";position:absolute;top:0;right:12px;font-family:Georgia,serif;
  font-size:60px;line-height:1;color:rgba(47,125,255,.2);
}
.rev-card blockquote{position:relative;z-index:1;font-size:13.3px;color:#B6C2D6;line-height:1.95}
.rev-card .who{
  display:flex;align-items:center;gap:8px;margin-top:14px;padding-top:10px;
  border-top:1px dashed var(--line);font-size:10.8px;color:var(--muted);
}
.rev-card .who i{
  width:23px;height:23px;border-radius:50%;background:rgba(47,125,255,.2);color:#9DC4FF;
  font-style:normal;font-size:10.5px;font-weight:800;display:grid;place-items:center;
}
.rev-card .who time{font-family:var(--mono);letter-spacing:0}

/* ============ 下载：蓝光 ============ */
.get{
  position:relative;overflow:hidden;padding:62px 0 64px;text-align:center;
  background:
    radial-gradient(560px 320px at 50% 0%,rgba(47,125,255,.3),transparent 72%),
    linear-gradient(180deg,#0B0F18,#070910);
  border-top:1px solid var(--line);
}
.get::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:130px;
  background:repeating-linear-gradient(105deg,rgba(94,160,255,.08) 0 2px,transparent 2px 22px);
  pointer-events:none;
}
.get-in{position:relative;z-index:1}
.dlogo{display:flex;align-items:center;justify-content:center;gap:11px;margin-bottom:14px}
.dlogo img{width:46px;height:46px;border-radius:9px;border:1px solid rgba(94,160,255,.4);background:#fff}
.dlogo em{font-style:normal;font-size:10px;letter-spacing:3px;color:rgba(160,180,210,.66)}
.get h2{
  font-size:33px;letter-spacing:2px;margin-bottom:11px;color:#F4F8FF;
  font-style:italic;transform:skewX(-6deg);
}
.get h2 em{font-style:normal;color:#7FB2FF}
.get p{font-size:13.8px;color:rgba(190,204,226,.74);max-width:660px;margin:0 auto 20px;line-height:1.95}
.dm{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:24px}
.dm span{
  font-size:11px;border:1px solid rgba(94,160,255,.3);border-radius:999px;
  padding:3px 12px;color:#A9C4EE;
}
.get .btn{box-shadow:0 0 0 1px rgba(94,160,255,.55),0 12px 34px rgba(47,125,255,.42)}

/* ============ 页脚 ============ */
.ft{background:#07090D;color:rgba(180,194,214,.6);padding:34px 0 26px;font-size:12.2px;border-top:2px solid var(--blue)}
.ft-in{display:flex;flex-wrap:wrap;gap:10px 26px;align-items:flex-start;justify-content:space-between}
.ft-brand{display:flex;align-items:center;gap:9px;color:#EAF2FF;font-weight:700;font-size:13.5px;letter-spacing:1.2px}
.ft-brand img{width:26px;height:26px;border:1px solid rgba(94,160,255,.35);border-radius:6px;background:#fff}
.ft p{max-width:520px;line-height:1.9;color:rgba(172,186,207,.6)}
.ft-links{display:flex;gap:16px;flex-wrap:wrap;font-size:11.8px}
.ft-links a:hover{color:#7FB2FF}
.ft-copy{width:100%;border-top:1px solid var(--line);padding-top:13px;font-size:11px;color:rgba(150,164,186,.44);line-height:1.9}

/* ============ 返回顶部 ============ */
.backtop{
  position:fixed;right:24px;bottom:88px;z-index:70;width:42px;height:42px;border-radius:50%;
  background:rgba(18,23,33,.94);border:1px solid rgba(94,160,255,.4);color:#9DC4FF;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:0 8px 20px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transition:opacity .2s ease;
}
.backtop.on{opacity:1;visibility:visible}
.backtop:hover{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ============ 响应式 960 ============ */
@media (max-width:960px){
  .nav{
    display:none;position:absolute;top:68px;left:0;right:0;margin-left:0;
    background:rgba(14,18,26,.98);border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:6px 26px 12px;
  }
  .nav.open{display:flex}
  .nav a{padding:10px 0;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .cta{padding:9px 14px;font-size:11.5px}
  .hero{padding:44px 0 0}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:58px}
  .hero .desc{max-width:none}
  .rail{max-width:470px;width:100%;height:430px;margin:0 auto}
  .feat-grid{grid-template-columns:1fr 1fr}
  .spread{grid-template-columns:1fr}
  .strip{grid-template-columns:repeat(3,1fr)}
  .strip figure{display:block;padding:9px}
  .strip img{width:100%;height:auto;aspect-ratio:3/4}
  .strip figcaption{display:block;padding-top:8px;font-size:12.2px}
  .steps{grid-template-columns:1fr 1fr;gap:20px 16px}
  .rev-grid{grid-template-columns:1fr 1fr}
  .rev-card:nth-child(3){grid-column:1 / -1}
}

/* ============ 响应式 600 ============ */
@media (max-width:600px){
  body{font-size:15px}
  .wrap{padding:0 18px}
  .top-in{height:62px;gap:10px}
  .brand img{width:32px;height:32px}
  .brand-t b{font-size:15.5px;letter-spacing:1px}
  .brand-t small{font-size:9px;letter-spacing:1px}
  .nav{top:62px;padding:4px 18px 10px}
  .cta{padding:8px 11px;font-size:10.8px}
  .hero{padding:32px 0 0}
  .hero h1{font-size:44px;letter-spacing:2px}
  .hero .lead{font-size:16.2px}
  .hero .desc{font-size:13.7px}
  .hero::after{display:none}
  .facts div{padding:0 11px}
  .facts b{font-size:11.6px}
  .facts span{font-size:10px}
  .rail{height:352px;max-width:340px}
  .live{font-size:10px;left:0}
  .spark{font-size:10px;right:0}
  .belt-item{padding:10px 14px}
  .belt-item img{width:34px;height:47px}
  .belt-item span{font-size:11.2px}
  .sec{padding:42px 0}
  .hd2{grid-template-columns:1fr;gap:8px;margin-bottom:22px}
  .hd2 .no{display:inline-block;border-top:0;border-left:2px solid var(--blue);padding:0 0 0 8px}
  .hd2 h2{font-size:23px;letter-spacing:1px}
  .hd2 p{font-size:13.2px}
  .feat-grid{grid-template-columns:1fr}
  .card{padding:18px 16px 20px}
  .strip{grid-template-columns:1fr}
  .strip figure{grid-template-columns:78px 1fr;display:grid;padding:9px}
  .strip img{width:78px;height:102px}
  .steps{grid-template-columns:1fr;gap:18px}
  .steps li{font-size:13.2px;padding-top:16px}
  .qa-item{grid-template-columns:40px 1fr;gap:10px}
  .qa-item h3{font-size:15px}
  .rev-grid{grid-template-columns:1fr}
  .rev-card:nth-child(3){grid-column:auto}
  .get{padding:44px 0 46px}
  .get h2{font-size:24px;letter-spacing:1.4px}
  .dm span{font-size:10.4px;padding:2px 10px}
  .ft-in{flex-direction:column}
  .backtop{right:14px;bottom:74px;width:38px;height:38px}
}

@media (prefers-reduced-motion:reduce){
  .belt-track{animation:none}
  html{scroll-behavior:auto}
}