:root{
  --bg:#0A0D11;
  --bg-2:#0C1117;
  --panel:#111820;
  --panel-2:#0E151C;
  --line:#1D2833;
  --line-2:#28394A;
  --tx:#DCE6F0;
  --tx-2:#93A6B8;
  --tx-3:#6C7F92;
  --blue:#3AA6F0;
  --blue-2:#2A7EDC;
  --cyan:#45D3C6;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",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(--tx);background:var(--bg);line-height:1.8;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:1.35;font-weight:700}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 28px}

/* ============ 顶栏：暗色玻璃 ============ */
.top{
  position:sticky;top:0;z-index:90;background:rgba(10,13,17,.9);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.top.on{box-shadow:0 12px 32px rgba(0,0,0,.55)}
.top-in{display:flex;align-items:center;height:70px;gap:18px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand img{width:36px;height:36px;border-radius:9px;box-shadow:0 0 0 1px rgba(58,166,240,.38),0 6px 16px rgba(58,166,240,.22)}
.brand-t b{display:block;font-size:18px;letter-spacing:.6px;line-height:1.2;color:#F1F7FC}
.brand-t small{display:block;font-family:var(--mono);font-size:8.6px;letter-spacing:1.8px;color:var(--tx-3);margin-top:3px}
.nav{display:flex;gap:23px;margin-left:auto;font-size:13px;font-weight:600;color:var(--tx-2)}
.nav a{position:relative;padding:4px 0}
.nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));transition:right .25s ease;
}
.nav a:hover{color:#EDF5FC}
.nav a:hover::after{right:0}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;color:var(--tx);padding:4px}
.cta{
  flex:none;background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;
  font-size:12.5px;font-weight:800;letter-spacing:.4px;padding:10px 20px;border-radius:9px;
  box-shadow:0 6px 18px rgba(58,166,240,.26);
}
.cta:hover{filter:brightness(1.08)}

/* ============ 英雄区：暗场 + 多源面板 ============ */
.hero{
  position:relative;overflow:hidden;padding:74px 0 68px;
  background:
    radial-gradient(760px 540px at 10% -4%,rgba(58,166,240,.2),transparent 70%),
    radial-gradient(560px 440px at 92% 16%,rgba(69,211,198,.13),transparent 72%),
    linear-gradient(180deg,#0B1118 0%,#080B0E 100%);
}
.grid-bg{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(122,164,204,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(122,164,204,.06) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(ellipse at 62% 22%,#000 4%,transparent 70%);
  mask-image:radial-gradient(ellipse at 62% 22%,#000 4%,transparent 70%);
}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center;position:relative;z-index:1}
.kick{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:10.5px;
  letter-spacing:2.2px;color:var(--cyan);border:1px solid rgba(69,211,198,.3);
  border-radius:999px;padding:6px 13px;background:rgba(69,211,198,.06);margin-bottom:18px;
}
.hero h1{
  font-size:80px;font-weight:800;letter-spacing:-1.6px;line-height:1.04;
  color:#F3F8FD;margin-bottom:12px;text-shadow:0 0 46px rgba(58,166,240,.28);
}
.hero h1 .dot{color:var(--blue)}
.hero .lead{font-size:19px;font-weight:700;color:#D3E4F2;margin-bottom:13px;letter-spacing:.2px}
.hero .desc{font-size:14.6px;color:var(--tx-2);max-width:560px;margin-bottom:28px;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;font-weight:800;font-size:15px;
  background:linear-gradient(135deg,var(--blue),var(--blue-2));
  padding:13px 28px;border-radius:10px;
  box-shadow:0 10px 26px rgba(58,166,240,.28);
}
.btn svg{width:17px;height:17px}
.btn:hover{filter:brightness(1.08);transform:translateY(1px)}
.ghost{
  display:inline-flex;align-items:center;padding:12px 20px;border-radius:10px;
  border:1px solid rgba(220,230,240,.2);color:#CFE0EE;font-size:13.5px;font-weight:700;
}
.ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(69,211,198,.07)}
.facts{
  display:flex;flex-wrap:wrap;margin-top:30px;padding-top:18px;
  border-top:1px dashed rgba(122,164,204,.2);
}
.facts div{padding:0 18px;border-left:1px solid rgba(122,164,204,.14)}
.facts div:first-child{padding-left:0;border-left:0}
.facts b{display:block;font-size:12.4px;color:#DDEBF7;letter-spacing:.4px}
.facts span{display:block;font-size:11px;color:var(--tx-3);margin-top:2px}

/* 屏幕叠放 */
.deck{position:relative;height:486px;z-index:1}
.halo{
  position:absolute;right:4%;top:6%;width:80%;height:82%;border-radius:50%;
  background:radial-gradient(circle,rgba(58,166,240,.32),transparent 66%);
  filter:blur(34px);pointer-events:none;
}
.shot{
  position:absolute;margin:0;padding:6px;border-radius:16px;
  border:1px solid rgba(90,150,200,.28);
  background:linear-gradient(160deg,#141D27,#0B1117);
  box-shadow:0 26px 52px rgba(0,0,0,.6),0 0 0 1px rgba(58,166,240,.06);
}
.shot img{width:100%;height:100%;object-fit:cover;border-radius:11px}
.shot.main{left:11%;top:3%;width:51%;height:86%;z-index:2}
.shot.s1{right:0;top:0;width:35%;height:36%;z-index:3;transform:rotate(2.4deg)}
.shot.s2{right:5%;bottom:1%;width:38%;height:36%;z-index:3;transform:rotate(-1.8deg)}
.panel{
  position:absolute;left:-4px;bottom:7%;width:198px;z-index:5;
  background:rgba(11,17,24,.88);border:1px solid rgba(90,150,200,.32);
  border-radius:12px;padding:11px 14px 8px;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
}
.panel-h{
  display:flex;align-items:center;gap:7px;font-family:var(--mono);font-size:9px;
  letter-spacing:1.8px;color:var(--tx-3);padding-bottom:8px;
}
.live{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 3px rgba(69,211,198,.16)}
.panel-row{
  display:flex;align-items:center;gap:8px;font-size:11.5px;color:#CFE0EE;
  padding:6px 0;border-top:1px solid rgba(122,164,204,.1);
}
.panel-row i{width:6px;height:6px;border-radius:50%;background:var(--blue);flex:none}
.panel-row b{font-weight:600;flex:1}
.panel-row em{font-style:normal;font-family:var(--mono);font-size:9.5px;color:var(--cyan);letter-spacing:.4px}
.panel-row.off i{background:#42525F}
.panel-row.off b{color:var(--tx-3)}
.panel-row.off em{color:var(--tx-3)}

/* ============ 通用区块 ============ */
.sec{padding:72px 0;background:var(--bg)}
.dim{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.hd2{display:grid;grid-template-columns:108px 1fr;gap:20px;align-items:start;margin-bottom:36px}
.hd2 .no{
  font-family:var(--mono);font-size:10.5px;letter-spacing:1.5px;color:var(--blue);
  border-top:2px solid var(--blue);padding-top:9px;white-space:nowrap;
}
.hd2 h2{font-size:33px;letter-spacing:.4px;margin-bottom:8px;color:#EFF6FD}
.hd2 p{font-size:14.2px;color:var(--tx-2);max-width:790px}

/* 特色：暗卡 */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{
  position:relative;overflow:hidden;border-radius:14px;padding:22px 20px 24px;
  background:linear-gradient(180deg,rgba(23,33,43,.92),rgba(14,20,27,.92));
  border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));opacity:.5;
}
.card .n{font-family:var(--mono);font-size:10.5px;letter-spacing:2px;color:var(--cyan)}
.card h4{font-size:17px;letter-spacing:.4px;margin:10px 0 7px;color:#E9F2FA}
.card p{font-size:13.4px;color:var(--tx-2);line-height:1.9}
.card:hover{transform:translateY(-4px);border-color:rgba(58,166,240,.42);box-shadow:0 18px 40px rgba(0,0,0,.46)}

/* 界面：窗口大图 + 侧栏 */
.spread{display:grid;grid-template-columns:1.06fr .94fr;gap:18px;align-items:stretch}
.big{margin:0;display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;padding-bottom:12px}
.bar{display:flex;gap:5px;align-items:center;padding:10px 13px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.bar i{width:8px;height:8px;border-radius:50%;background:#25313D;display:block}
.bar i:first-child{background:var(--blue)}
.big img{width:100%;flex:1;min-height:320px;object-fit:cover;object-position:top}
.big figcaption{font-size:12.5px;color:var(--tx-3);padding:11px 15px 0;letter-spacing:.4px}
.strip{display:grid;gap:13px}
.strip figure{
  margin:0;display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:center;
  padding:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s ease,background .2s ease;
}
.strip img{width:96px;height:122px;object-fit:cover;border-radius:8px;border:1px solid var(--line-2)}
.strip figcaption{font-size:13px;color:#B9CBDA;letter-spacing:.2px}
.strip figure:hover{border-color:rgba(58,166,240,.4);background:#131C25}

/* 指南：横向五步 */
.steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:14px;position:relative}
.steps::before{
  content:"";position:absolute;left:0;right:0;top:19px;height:1px;
  background:linear-gradient(90deg,rgba(58,166,240,.55),rgba(69,211,198,.1));z-index:0;
}
.steps li{position:relative;padding-top:50px;font-size:12.8px;color:var(--tx-2);line-height:1.85}
.steps b{
  position:absolute;left:0;top:0;width:38px;height:38px;border-radius:11px;z-index:1;
  display:grid;place-items:center;font-family:var(--mono);font-size:11.5px;font-weight:700;
  color:var(--blue);background:#0D141B;border:1px solid rgba(58,166,240,.45);
  box-shadow:0 0 0 5px var(--bg);
}
.steps strong{display:block;font-size:14px;color:#E7F0F9;margin-bottom:4px;letter-spacing:.2px}
.gnote{
  margin-top:26px;border-left:2px solid var(--cyan);border-radius:0 10px 10px 0;
  background:rgba(69,211,198,.06);padding:12px 16px;font-size:12.8px;color:#A9BCCB;
}

/* 答疑：条目卡 */
.qa{display:grid;gap:12px}
.qa-item{
  display:grid;grid-template-columns:52px 1fr;gap:14px;align-items:start;
  padding:18px 20px;background:var(--panel-2);border:1px solid var(--line);
  border-left:2px solid rgba(58,166,240,.5);border-radius:12px;
}
.qa-item .qn{font-family:var(--mono);font-size:11px;letter-spacing:1px;color:var(--blue);padding-top:3px}
.qa-item h3{font-size:16px;letter-spacing:.3px;margin-bottom:6px;color:#E9F1F9}
.qa-item p{font-size:13.6px;color:var(--tx-2);line-height:1.9}

/* 评价：斜光卡 */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rev-card{
  position:relative;overflow:hidden;border-radius:14px;padding:24px 22px 16px;
  background:linear-gradient(180deg,#121A23,#0D131A);border:1px solid var(--line);
}
.rev-card::before{
  content:"\201C";position:absolute;right:10px;top:-6px;font-family:Georgia,serif;
  font-size:72px;line-height:1;color:rgba(58,166,240,.14);
}
.rev-card blockquote{position:relative;z-index:1;font-size:13.4px;color:#C6D7E6;line-height:1.95}
.rev-card .who{
  display:flex;align-items:center;gap:8px;margin-top:16px;padding-top:11px;
  border-top:1px dashed rgba(122,164,204,.18);font-size:10.8px;color:var(--tx-3);
}
.rev-card .who i{
  width:24px;height:24px;border-radius:7px;background:rgba(58,166,240,.14);color:#8FCBF2;
  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：暗场光环 ============ */
.get{
  position:relative;overflow:hidden;padding:76px 0;text-align:center;
  background:
    radial-gradient(600px 380px at 50% 6%,rgba(58,166,240,.22),transparent 70%),
    radial-gradient(420px 300px at 84% 82%,rgba(69,211,198,.12),transparent 72%),
    #070A0E;
  border-top:1px solid var(--line);
}
.get::before{
  content:"";position:absolute;left:50%;top:22px;width:380px;height:380px;margin-left:-190px;
  border:1px solid rgba(58,166,240,.16);border-radius:50%;
  box-shadow:inset 0 0 80px rgba(58,166,240,.08);
}
.get-in{position:relative;z-index:1}
.dlogo{display:flex;align-items:center;justify-content:center;gap:11px;margin-bottom:15px}
.dlogo img{width:46px;height:46px;border-radius:11px;border:1px solid rgba(58,166,240,.35)}
.dlogo em{font-style:normal;font-family:var(--mono);font-size:9.5px;letter-spacing:2.6px;color:var(--tx-3)}
.get h2{font-size:36px;letter-spacing:.6px;margin-bottom:12px;color:#F1F7FC}
.get h2 em{font-style:normal;color:var(--blue)}
.get p{font-size:13.8px;color:var(--tx-2);max-width:660px;margin:0 auto 22px;line-height:1.95}
.dm{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:26px}
.dm span{
  font-size:11px;border:1px solid rgba(122,164,204,.24);border-radius:999px;padding:4px 12px;
  color:#9FB3C4;background:rgba(255,255,255,.02);
}

/* ============ 页脚 ============ */
.ft{background:#06090C;border-top:1px solid var(--line);padding:34px 0 26px;font-size:12.2px;color:var(--tx-3)}
.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:#E7F0F9;font-weight:700;font-size:13.5px;letter-spacing:.6px}
.ft-brand img{width:26px;height:26px;border-radius:7px;border:1px solid rgba(58,166,240,.3)}
.ft p{max-width:520px;line-height:1.9;color:var(--tx-3)}
.ft-links{display:flex;gap:16px;flex-wrap:wrap;font-size:11.8px}
.ft-links a:hover{color:var(--cyan)}
.ft-copy{width:100%;border-top:1px solid rgba(122,164,204,.12);padding-top:13px;font-size:11px;color:#5C6E80;line-height:1.9}

/* ============ 返回顶部 ============ */
.backtop{
  position:fixed;right:24px;bottom:88px;z-index:70;width:44px;height:44px;border-radius:12px;
  background:#101820;border:1px solid rgba(122,164,204,.24);color:#CFE0EE;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:0 10px 24px rgba(0,0,0,.45);
  opacity:0;visibility:hidden;transition:opacity .2s ease;
}
.backtop.on{opacity:1;visibility:visible}
.backtop:hover{background:var(--blue);color:#06121C;border-color:var(--blue)}

/* ============ 响应式 960 ============ */
@media (max-width:960px){
  .nav{
    display:none;position:absolute;top:70px;left:0;right:0;margin-left:0;
    background:#0B1117;border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:6px 28px 12px;
  }
  .nav.open{display:flex}
  .nav a{padding:11px 0;border-bottom:1px solid rgba(122,164,204,.12)}
  .nav a::after{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .cta{padding:9px 14px;font-size:11.5px}
  .hero{padding:52px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .hero h1{font-size:62px}
  .hero .desc{max-width:none}
  .deck{max-width:470px;width:100%;height:446px;margin:0 auto}
  .panel{left:0;width:180px}
  .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:96/122}
  .strip figcaption{display:block;padding-top:8px;font-size:12.4px}
  .steps{grid-template-columns:repeat(2,1fr);gap:16px 18px}
  .steps::before{display:none}
  .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:16px;letter-spacing:.3px}
  .brand-t small{font-size:7.6px;letter-spacing:1.2px}
  .nav{top:62px;padding:4px 18px 10px}
  .cta{padding:8px 11px;font-size:10.8px}
  .hero{padding:38px 0 42px}
  .hero h1{font-size:50px;letter-spacing:-1px}
  .hero .lead{font-size:16.5px}
  .hero .desc{font-size:13.8px}
  .facts div{padding:0 11px}
  .facts b{font-size:11.4px}
  .facts span{font-size:10px}
  .deck{height:352px;max-width:350px}
  .panel{width:160px;padding:9px 11px 6px;bottom:4%}
  .panel-row{font-size:10.5px}
  .sec{padding:46px 0}
  .hd2{grid-template-columns:1fr;gap:8px;margin-bottom:24px}
  .hd2 .no{display:inline-block;border-top:0;border-left:2px solid var(--blue);padding:0 0 0 9px}
  .hd2 h2{font-size:25px}
  .hd2 p{font-size:13.4px}
  .feat-grid{grid-template-columns:1fr}
  .card{padding:18px 16px 20px}
  .strip{grid-template-columns:1fr}
  .strip figure{grid-template-columns:80px 1fr;display:grid;padding:9px}
  .strip img{width:80px;height:106px;aspect-ratio:auto}
  .steps{grid-template-columns:1fr;gap:0}
  .steps li{padding:0 0 20px 54px;font-size:13.2px}
  .steps li:last-child{padding-bottom:4px}
  .steps::before{
    display:block;left:18px;top:8px;bottom:20px;right:auto;width:1px;height:auto;
    background:linear-gradient(180deg,rgba(58,166,240,.5),rgba(58,166,240,.04));
  }
  .steps b{width:36px;height:36px;border-radius:10px;font-size:11px}
  .steps strong{padding-top:6px}
  .qa-item{grid-template-columns:42px 1fr;gap:10px;padding:16px 14px}
  .qa-item h3{font-size:15.5px}
  .rev-grid{grid-template-columns:1fr}
  .rev-card:nth-child(3){grid-column:auto}
  .get{padding:48px 0 52px}
  .get::before{width:300px;height:300px;margin-left:-150px}
  .get h2{font-size:26px}
  .dm span{font-size:10.4px;padding:3px 10px}
  .ft-in{flex-direction:column}
  .backtop{right:14px;bottom:74px;width:40px;height:40px;border-radius:11px}
}