*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,sans-serif;color:#15141a;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}

/* ====== NAV ====== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(0,0,0,.05)}
.nav .in{max-width:1240px;margin:0 auto;padding:0 36px;height:60px;display:flex;align-items:center;justify-content:space-between}
.nav .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:#1d1d1f}
.nav .logo img{width:34px;height:34px;border-radius:8px}
.nav .lk{display:flex;align-items:center;gap:34px}
.nav .lk a{font-size:14px;font-weight:500;color:#5b5b66;transition:color .2s}
.nav .lk a:hover,.nav .lk a.on{color:#0060df}
.nav .dl{background:#0060df;color:#fff;padding:8px 20px;border-radius:20px;font-size:13px;font-weight:600;transition:all .25s}
.nav .dl:hover{background:#0250bb;transform:translateY(-1px)}

/* ====== HERO - tech immersive ====== */
.hero{position:relative;background:#050b18;padding:140px 36px 100px;overflow:hidden}
/* grid pattern */
.hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(0,96,223,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(0,96,223,.06) 1px,transparent 1px);background-size:48px 48px;mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,#000 40%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 30%,#000 40%,transparent 100%)}
/* glow orbs */
.hero::after{content:'';position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(0,96,223,.2),transparent 70%);top:-100px;right:-100px;border-radius:50%;pointer-events:none}
.hero .glow2{position:absolute;width:400px;height:400px;background:radial-gradient(circle,rgba(64,150,255,.1),transparent 70%);bottom:-80px;left:-80px;border-radius:50%;pointer-events:none}
.hero .wrap{max-width:1240px;margin:0 auto;position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero .txt .tagline{display:inline-flex;align-items:center;gap:8px;background:rgba(0,96,223,.15);border:1px solid rgba(0,96,223,.25);color:#7eb8ff;padding:5px 16px;border-radius:20px;font-size:12px;font-weight:600;letter-spacing:.5px;margin-bottom:28px;backdrop-filter:blur(10px)}
.hero .txt .tagline .dot{width:7px;height:7px;background:#4096ff;border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 6px #4096ff}50%{opacity:.3;box-shadow:0 0 12px #4096ff}}
.hero .txt h1{font-size:clamp(2.6rem,4.5vw,3.6rem);font-weight:900;color:#fff;line-height:1.12;margin-bottom:14px;letter-spacing:-1px}
.hero .txt h1 .grad{background:linear-gradient(135deg,#4096ff 0%,#7eb8ff 50%,#a0d2ff 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero .txt h1 .accent{color:#4096ff}
.hero .txt .desc{font-size:1.05rem;color:rgba(255,255,255,.55);line-height:1.75;margin-bottom:12px;max-width:480px}
/* inline stat pills */
.hero .txt .metrics{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:32px}
.hero .txt .metrics .m{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);padding:8px 16px;border-radius:12px;font-size:13px;color:rgba(255,255,255,.65);backdrop-filter:blur(10px)}
.hero .txt .metrics .m b{color:#7eb8ff;font-size:1.15rem}
.hero .txt .acts{display:flex;gap:12px;flex-wrap:wrap}
.hero .txt .acts .a{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#0060df,#4096ff);color:#fff;padding:16px 36px;border-radius:28px;font-size:16px;font-weight:700;transition:all .3s;box-shadow:0 0 30px rgba(0,96,223,.35)}
.hero .txt .acts .a:hover{transform:translateY(-3px);box-shadow:0 0 50px rgba(0,96,223,.5)}
.hero .txt .acts .b{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.8);padding:16px 34px;border-radius:28px;font-size:16px;font-weight:600;transition:all .3s;backdrop-filter:blur(10px)}
.hero .txt .acts .b:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.05)}
.hero .txt .hint{margin-top:18px;font-size:.78rem;color:rgba(255,255,255,.3)}
/* right side - browser mockup */
.hero .visual{position:relative}
.hero .visual img{filter:drop-shadow(0 24px 64px rgba(0,0,0,.5));border-radius:12px}
/* floating badges around the card */
.hero .visual .fbadge{position:absolute;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:10px 16px;backdrop-filter:blur(10px);font-size:12px;color:rgba(255,255,255,.55)}
.hero .visual .fbadge b{color:#7eb8ff;display:block;font-size:1.1rem;font-weight:700}
.hero .visual .fbadge.tl{top:-20px;left:20px}
.hero .visual .fbadge.br{bottom:30px;right:-10px}
@media(max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:40px}
  .hero .visual{order:-1;max-width:480px;margin:0 auto;width:100%}
  .hero .visual .fbadge.tl{top:-10px;left:10px}
  .hero .visual .fbadge.br{bottom:-10px;right:10px}
}

/* ====== STATS LINE ====== */
.stats-bar{max-width:1240px;margin:0 auto;padding:0 36px 70px;display:flex;justify-content:center;gap:0}
.stats-bar .st{flex:1;text-align:center;padding:28px 16px;border-right:1px solid rgba(0,0,0,.05)}
.stats-bar .st:last-child{border-right:none}
.stats-bar .st .n{font-size:2.4rem;font-weight:900;color:#0060df;line-height:1.1}
.stats-bar .st .l{font-size:.85rem;color:#8e8e93;margin-top:6px}
@media(max-width:700px){.stats-bar{flex-wrap:wrap}.stats-bar .st{flex:0 0 50%;border:none;border-bottom:1px solid rgba(0,0,0,.03)}}

/* ====== FEATURE 1 - big image side ====== */
.f1{padding:20px 36px 100px;max-width:1240px;margin:0 auto}
.f1 .inner{display:grid;grid-template-columns:1.1fr 1fr;gap:72px;align-items:center}
.f1 .txt .label{display:inline-block;font-size:12px;font-weight:700;color:#0060df;text-transform:uppercase;letter-spacing:1px;margin-bottom:14px}
.f1 .txt h2{font-size:clamp(1.8rem,2.8vw,2.4rem);font-weight:900;color:#15141a;margin-bottom:16px;letter-spacing:-.5px}
.f1 .txt p{font-size:1.02rem;color:#5b5b66;line-height:1.85;margin-bottom:10px}
.f1 .txt .feat-list{list-style:none;margin-top:20px}
.f1 .txt .feat-list li{font-size:.95rem;color:#3a3a44;padding:8px 0;padding-left:28px;position:relative;font-weight:600}
.f1 .txt .feat-list li::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:18px;height:18px;background:rgba(0,96,223,.1);border-radius:50%}
.f1 .txt .feat-list li::after{content:'✓';position:absolute;left:4px;top:50%;transform:translateY(-50%);font-size:10px;color:#0060df;font-weight:900}
.f1 .vis{background:linear-gradient(135deg,#f0f5ff,#e8f0fe);border-radius:28px;padding:50px 40px;text-align:center}
.f1 .vis img{max-width:100%;margin:0 auto}
@media(max-width:860px){.f1 .inner{grid-template-columns:1fr;gap:40px}}

/* ====== FEATURE 2 - cards row with different heights ====== */
.f2{padding:100px 36px;background:#f8f9fb}
.f2 .head{margin-bottom:56px;display:flex;align-items:flex-end;justify-content:space-between;max-width:1240px;margin-left:auto;margin-right:auto;flex-wrap:wrap;gap:20px}
.f2 .head h2{font-size:clamp(1.7rem,2.6vw,2.2rem);font-weight:900;color:#15141a;letter-spacing:-.5px}
.f2 .head a{font-size:15px;font-weight:600;color:#0060df;white-space:nowrap}
.f2 .head a:hover{text-decoration:underline}
.f2 .grid{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:1.3fr 1fr 1fr;grid-template-rows:auto auto;gap:20px}
.f2 .grid .big{grid-row:span 2;background:#fff;border-radius:20px;padding:44px 36px;box-shadow:0 4px 20px rgba(0,0,0,.03)}
.f2 .grid .big .ico{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,#0060df,#4096ff);color:#fff;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px}
.f2 .grid .big h3{font-size:1.5rem;font-weight:800;color:#15141a;margin-bottom:12px}
.f2 .grid .big p{font-size:1rem;color:#5b5b66;line-height:1.8;margin-bottom:20px}
.f2 .grid .big .link{font-size:15px;font-weight:700;color:#0060df}
.f2 .grid .sm{background:#fff;border-radius:16px;padding:28px 26px;box-shadow:0 2px 12px rgba(0,0,0,.02);transition:all .3s}
.f2 .grid .sm:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(0,0,0,.06)}
.f2 .grid .sm .ico{font-size:32px;margin-bottom:12px}
.f2 .grid .sm h3{font-size:1.08rem;font-weight:700;color:#15141a;margin-bottom:6px}
.f2 .grid .sm p{font-size:.9rem;color:#5b5b66;line-height:1.6}
@media(max-width:860px){.f2 .grid{grid-template-columns:1fr 1fr}.f2 .grid .big{grid-row:auto}}
@media(max-width:600px){.f2 .grid{grid-template-columns:1fr}}

/* ====== FEATURE 3 - two column split ====== */
.f3{padding:100px 36px;max-width:1240px;margin:0 auto}
.f3 .inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.f3 .img-block{background:linear-gradient(135deg,#e8f0fe,#d4e4ff);border-radius:24px;padding:50px;text-align:center}
.f3 .img-block img{max-width:280px;margin:0 auto}
.f3 .txt h2{font-size:clamp(1.7rem,2.8vw,2.2rem);font-weight:900;color:#15141a;margin-bottom:14px;letter-spacing:-.5px}
.f3 .txt p{font-size:1rem;color:#5b5b66;line-height:1.85;margin-bottom:10px}
.f3 .txt .list{list-style:none;margin-top:18px}
.f3 .txt .list li{padding:10px 0;font-size:.95rem;color:#3a3a44;border-bottom:1px solid rgba(0,0,0,.04);display:flex;align-items:center;gap:10px}
.f3 .txt .list li .dot{width:8px;height:8px;background:#0060df;border-radius:50%;flex-shrink:0}
@media(max-width:860px){.f3 .inner{grid-template-columns:1fr;gap:40px}}

/* ====== FEATURE 4 - centered with icon columns ====== */
.f4{padding:100px 36px;background:#f8f9fb;text-align:center}
.f4 h2{font-size:clamp(1.7rem,2.6vw,2.2rem);font-weight:900;color:#15141a;margin-bottom:10px;letter-spacing:-.5px}
.f4 .sub{font-size:1.02rem;color:#5b5b66;margin-bottom:56px}
.f4 .cols{max-width:1000px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.f4 .cols .it{text-align:center;padding:20px}
.f4 .cols .it .ic{width:64px;height:64px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto 16px;box-shadow:0 4px 16px rgba(0,0,0,.04)}
.f4 .cols .it h3{font-size:1rem;font-weight:700;color:#15141a;margin-bottom:6px}
.f4 .cols .it p{font-size:.85rem;color:#8e8e93;line-height:1.5}
@media(max-width:768px){.f4 .cols{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.f4 .cols{grid-template-columns:1fr}}

/* ====== QUOTE / TESTIMONIAL ====== */
.quote{padding:100px 36px;max-width:800px;margin:0 auto;text-align:center}
.quote .mark{font-size:clamp(4rem,8vw,7rem);color:rgba(0,96,223,.08);line-height:1;margin-bottom:-30px;font-weight:900}
.quote blockquote{font-size:clamp(1.2rem,2vw,1.6rem);font-weight:600;color:#3a3a44;line-height:1.7;margin-bottom:24px}
.quote .attr{font-size:.9rem;color:#8e8e93}

/* ====== DOWNLOAD CARDS ====== */
.dl-sec{padding:0 36px 100px;max-width:1100px;margin:0 auto}
.dl-sec h2{text-align:center;font-size:clamp(1.7rem,2.6vw,2.2rem);font-weight:900;color:#15141a;margin-bottom:10px;letter-spacing:-.5px}
.dl-sec .dsub{text-align:center;font-size:1rem;color:#5b5b66;margin-bottom:48px}
.dl-sec .dg{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-sec .dc{background:#fff;border:1px solid rgba(0,0,0,.06);border-radius:22px;padding:38px 28px;text-align:center;transition:all .35s;position:relative}
.dl-sec .dc:hover{box-shadow:0 16px 44px rgba(0,96,223,.08);border-color:rgba(0,96,223,.15);transform:translateY(-3px)}
.dl-sec .dc.best{border-color:rgba(0,96,223,.2);box-shadow:0 4px 20px rgba(0,96,223,.05)}
.dl-sec .dc .badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:#0060df;color:#fff;padding:5px 22px;border-radius:14px;font-size:12px;font-weight:700;white-space:nowrap}
.dl-sec .dc .di{font-size:46px;margin-bottom:14px}
.dl-sec .dc h3{font-size:1.2rem;font-weight:800;color:#15141a;margin-bottom:4px}
.dl-sec .dc .ver{font-size:.82rem;color:#aeaeb2;margin-bottom:18px}
.dl-sec .dc ul{list-style:none;text-align:left;margin-bottom:26px}
.dl-sec .dc ul li{font-size:.88rem;color:#5b5b66;padding:4px 0 4px 20px;position:relative}
.dl-sec .dc ul li::before{content:'✓';position:absolute;left:0;color:#0060df;font-weight:900}
.dl-sec .dc .da{display:inline-block;background:#0060df;color:#fff;padding:14px 36px;border-radius:24px;font-size:15px;font-weight:700;transition:all .25s}
.dl-sec .dc .da:hover{background:#0250bb;transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,96,223,.25)}
.dl-sec .dc .da2{display:inline-block;border:2px solid #d2d2d7;color:#15141a;padding:14px 36px;border-radius:24px;font-size:15px;font-weight:600;transition:all .25s}
.dl-sec .dc .da2:hover{border-color:#0060df;color:#0060df}
@media(max-width:800px){.dl-sec .dg{grid-template-columns:1fr;max-width:420px;margin:0 auto}}

/* ====== FAQ ACCORDION ====== */
.faq-sec{padding:100px 36px;background:#f8f9fb}
.faq-sec h2{text-align:center;font-size:clamp(1.7rem,2.6vw,2.2rem);font-weight:900;color:#15141a;margin-bottom:48px;letter-spacing:-.5px}
.faq-sec .fl{max-width:760px;margin:0 auto}
.faq-sec .fl .fq{padding:18px 0;border-bottom:1px solid rgba(0,0,0,.05)}
.faq-sec .fl .fq h3{font-size:1.02rem;font-weight:600;color:#15141a;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-sec .fl .fq h3 .arr{font-size:18px;color:#0060df;transition:transform .3s}
.faq-sec .fl .fq p{font-size:.93rem;color:#5b5b66;line-height:1.8;margin-top:10px;display:none}
.faq-sec .fl .fq.open p{display:block}
.faq-sec .fl .fq.open h3 .arr{transform:rotate(45deg)}

/* ====== FINAL CTA ====== */
.cta-big{background:#0060df;padding:90px 36px;text-align:center;position:relative;overflow:hidden}
.cta-big::before{content:'';position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(255,255,255,.06),transparent 70%);top:-150px;right:-150px;border-radius:50%;pointer-events:none}
.cta-big h2{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:900;color:#fff;margin-bottom:12px;position:relative;z-index:1}
.cta-big p{font-size:1.05rem;color:rgba(255,255,255,.7);margin-bottom:36px;position:relative;z-index:1}
.cta-big .cw{display:inline-flex;align-items:center;gap:8px;background:#fff;color:#0060df;padding:18px 48px;border-radius:28px;font-size:17px;font-weight:800;transition:all .25s;box-shadow:0 8px 28px rgba(0,0,0,.15);position:relative;z-index:1}
.cta-big .cw:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(0,0,0,.25)}
.cta-big .note{margin-top:16px;font-size:.82rem;color:rgba(255,255,255,.4);position:relative;z-index:1}

/* ====== FOOTER ====== */
.ft{background:#15141a;padding:56px 0 0}
.ft .fg{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;max-width:1240px;margin:0 auto;padding:0 36px 48px}
.ft .fc h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px}
.ft .fc p{font-size:.88rem;color:#8e8e93;line-height:1.8}
.ft .fc a{font-size:.88rem;color:#8e8e93;line-height:2.5;display:block;transition:color .2s}
.ft .fc a:hover{color:#0060df}
.ft .fb{border-top:1px solid rgba(255,255,255,.06);padding:16px 36px;text-align:center;font-size:12px;color:#6e6e73}
.ft .fb a{color:#8e8e93;margin:0 10px;font-weight:500}
.ft .fb a:hover{color:#fff}
@media(max-width:768px){.ft .fg{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.ft .fg{grid-template-columns:1fr}}

/* ====== TRUST BAR ====== */
.tb{background:#f5f5f7;padding:10px 0;text-align:center;font-size:.78rem;color:#aeaeb2}
.tb span{margin:0 14px}

/* ====== SUB PAGES ====== */
.pg{background:linear-gradient(180deg,#e8f0fe,#fff 50%);padding:120px 36px 48px;text-align:center}
.pg .br{font-size:.85rem;color:#aeaeb2;margin-bottom:8px}
.pg .br a{color:#0060df}.pg .br a:hover{text-decoration:underline}
.pg h1{font-size:clamp(1.9rem,3.2vw,2.6rem);font-weight:900;color:#15141a;margin-bottom:10px;letter-spacing:-.5px}
.pg p{font-size:1.02rem;color:#5b5b66;max-width:600px;margin:0 auto}

/* FAQ page */
.faqpage{max-width:760px;margin:0 auto;padding:0 36px 80px}
.faqpage .fq{padding:20px 0;border-bottom:1px solid rgba(0,0,0,.04)}
.faqpage .fq h2{font-size:1.02rem;font-weight:700;color:#15141a;margin-bottom:4px;display:flex;align-items:center;gap:10px}
.faqpage .fq h2 .q{color:#0060df;font-weight:800;font-size:14px;flex-shrink:0}
.faqpage .fq p{font-size:.93rem;color:#5b5b66;line-height:1.8}

/* Article */
.art{max-width:740px;margin:0 auto;padding:0 36px 80px}
.art .am{font-size:.82rem;color:#aeaeb2;margin-bottom:28px;display:flex;gap:18px;flex-wrap:wrap}
.art h2{font-size:1.35rem;font-weight:800;color:#15141a;margin:36px 0 12px;letter-spacing:-.3px}
.art p{font-size:1rem;color:#424245;line-height:1.9;margin-bottom:16px}
.art .hb{background:#f0f5ff;border-left:3px solid #0060df;padding:18px 22px;border-radius:0 10px 10px 0;margin:24px 0}
.art .hb p{color:#15141a;font-weight:600;margin:0}

/* 404 */
.p404{text-align:center;padding:180px 36px 100px}
.p404 .cd{font-size:clamp(6rem,12vw,10rem);font-weight:900;color:rgba(0,96,223,.05);line-height:1}
.p404 h1{font-size:1.7rem;font-weight:800;color:#15141a;margin:4px 0 8px}
.p404 p{color:#5b5b66;margin-bottom:24px}
.p404 a{display:inline-block;background:#0060df;color:#fff;padding:13px 32px;border-radius:22px;font-weight:700;font-size:15px;transition:all .25s}
.p404 a:hover{background:#0250bb;transform:translateY(-2px)}

/* Sitemap */
.sm{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:800px;margin:0 auto;padding:0 36px 80px}
.sm .sb h2{font-size:1.1rem;font-weight:700;color:#15141a;margin-bottom:16px}
.sm .sb a{display:block;color:#5b5b66;padding:7px 0;font-size:.92rem;transition:all .2s}
.sm .sb a:hover{color:#0060df;padding-left:4px}
@media(max-width:600px){.sm{grid-template-columns:1fr}}

/* Mobile */
.ham{display:none;background:none;border:none;cursor:pointer;padding:6px}
.ham span{display:block;width:22px;height:2px;background:#15141a;margin:5px 0;border-radius:1px;transition:all .3s}
@media(max-width:768px){
  .nav .lk{display:none;position:absolute;top:60px;left:0;right:0;background:rgba(255,255,255,.97);flex-direction:column;padding:12px 36px 20px;gap:0;backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,.05)}
  .nav .lk.open{display:flex}
  .nav .lk a{padding:13px 0;border-bottom:1px solid rgba(0,0,0,.03);width:100%}
  .ham{display:block}
}

@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.au{animation:fadeUp .5s ease-out both}