*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;color:#1d1d1f;line-height:1.6;-webkit-font-smoothing:antialiased;background:#fff}
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,.9);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.nav .in{max-width:1280px;margin:0 auto;padding:0 32px;height:64px;display:flex;align-items:center;justify-content:space-between}
.nav .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:#20123a}
.nav .logo img{width:36px;height:36px;border-radius:8px}
.nav .lk{display:flex;align-items:center;gap:32px}
.nav .lk a{font-size:15px;font-weight:600;color:#6e6e73;transition:color .2s}
.nav .lk a:hover,.nav .lk a.on{color:#e66000}
.nav .dl{background:#e66000;color:#fff;padding:8px 20px;border-radius:20px;font-size:14px;font-weight:700;transition:all .3s}
.nav .dl:hover{background:#cc5500;transform:translateY(-1px)}

/* Hero - full width, big image focus */
.hero{padding:120px 0 0;text-align:center;background:linear-gradient(180deg,#fffaf5 0%,#fff 60%)}
.hero .wrap{max-width:1000px;margin:0 auto;padding:0 28px}
.hero .tag{display:inline-block;background:#fff;border:1px solid rgba(230,96,0,.2);color:#e66000;padding:4px 16px;border-radius:20px;font-size:13px;font-weight:700;margin-bottom:20px}
.hero h1{font-size:clamp(2.4rem,5.5vw,3.8rem);font-weight:900;color:#1d1d1f;line-height:1.18;margin-bottom:16px;letter-spacing:-1px}
.hero h1 .hl{color:#e66000}
.hero .sub{font-size:1.15rem;color:#6e6e73;max-width:560px;margin:0 auto 32px;line-height:1.75}
.hero .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .btns .a{display:inline-flex;align-items:center;gap:6px;background:#e66000;color:#fff;padding:15px 36px;border-radius:28px;font-size:16px;font-weight:800;transition:all .3s;box-shadow:0 6px 24px rgba(230,96,0,.25)}
.hero .btns .a:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(230,96,0,.35)}
.hero .btns .b{display:inline-flex;align-items:center;gap:6px;border:2px solid #d2d2d7;color:#1d1d1f;padding:15px 36px;border-radius:28px;font-size:16px;font-weight:700;transition:all .3s}
.hero .btns .b:hover{border-color:#e66000;color:#e66000}
.hero .note{margin-top:14px;font-size:.82rem;color:#aeaeb2}
.hero .mockup{margin-top:56px;max-width:880px;margin-left:auto;margin-right:auto}
.hero .mockup img{width:100%;filter:drop-shadow(0 16px 48px rgba(0,0,0,.06))}

/* Section */
.sec{padding:100px 28px}
.sec .mx{max-width:1150px;margin:0 auto}
.sec .hd{text-align:center;margin-bottom:60px}
.sec .hd h2{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:900;color:#1d1d1f;margin-bottom:12px}
.sec .hd p{font-size:1.08rem;color:#6e6e73;max-width:550px;margin:0 auto}

/* Stats pills */
.stats{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;padding:56px 28px;background:#fafafa;border-top:1px solid rgba(0,0,0,.03);border-bottom:1px solid rgba(0,0,0,.03)}
.stats .pill{background:#fff;border:1px solid rgba(0,0,0,.05);border-radius:16px;padding:28px 36px;text-align:center;min-width:140px;transition:all .3s}
.stats .pill:hover{box-shadow:0 8px 28px rgba(0,0,0,.06)}
.stats .pill .n{font-size:2.4rem;font-weight:900;color:#e66000;line-height:1}
.stats .pill .l{font-size:.85rem;color:#6e6e73;margin-top:8px}

/* Feature rows - clean left/right with big number */
.frow{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;margin-bottom:80px}
.frow:last-child{margin-bottom:0}
.frow .ftxt .num{font-size:4rem;font-weight:900;color:rgba(230,96,0,.12);line-height:1;margin-bottom:-16px}
.frow .ftxt h2{font-size:clamp(1.5rem,2.5vw,2rem);font-weight:900;color:#1d1d1f;margin-bottom:12px}
.frow .ftxt p{font-size:1.02rem;color:#6e6e73;line-height:1.85;margin-bottom:8px}
.frow .fimg{text-align:center}
.frow .fimg img{max-width:360px;margin:0 auto}
.frow.rev .fimg{order:2}.frow.rev .ftxt{order:1}
@media(max-width:768px){.frow,.frow.rev{grid-template-columns:1fr;gap:32px}.frow.rev .fimg{order:1}.frow.rev .ftxt{order:2}.fimg img{max-width:240px}}

/* 3-cards inline */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid3 .gc{background:#fff;border:1px solid rgba(0,0,0,.05);border-radius:20px;padding:32px 26px;transition:all .35s}
.grid3 .gc:hover{transform:translateY(-3px);box-shadow:0 12px 36px rgba(0,0,0,.06);border-color:rgba(230,96,0,.15)}
.grid3 .gc .ico{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;background:rgba(230,96,0,.08)}
.grid3 .gc h3{font-size:1.1rem;font-weight:800;color:#1d1d1f;margin-bottom:6px}
.grid3 .gc p{font-size:.92rem;color:#6e6e73;line-height:1.65}
@media(max-width:900px){.grid3{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.grid3{grid-template-columns:1fr}}

/* Download cards */
.dg{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:1050px;margin:0 auto}
.dcard{background:#fff;border:2px solid rgba(0,0,0,.05);border-radius:22px;padding:40px 28px;text-align:center;transition:all .35s;position:relative}
.dcard:hover{border-color:rgba(230,96,0,.15);transform:translateY(-3px);box-shadow:0 12px 36px rgba(0,0,0,.06)}
.dcard.best{border-color:rgba(230,96,0,.2);box-shadow:0 6px 24px rgba(230,96,0,.06)}
.dcard .dcb{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:#e66000;color:#fff;padding:5px 20px;border-radius:14px;font-size:12px;font-weight:800;white-space:nowrap}
.dcard .di{font-size:44px;margin-bottom:12px}
.dcard h3{font-size:1.2rem;font-weight:800;color:#1d1d1f;margin-bottom:4px}
.dcard .dv{font-size:.82rem;color:#aeaeb2;margin-bottom:20px}
.dcard ul{list-style:none;text-align:left;margin-bottom:24px}
.dcard ul li{font-size:.88rem;color:#6e6e73;padding:4px 0 4px 20px;position:relative}
.dcard ul li::before{content:'✓';position:absolute;left:0;color:#e66000;font-weight:900}
.dcard .da{display:inline-block;background:#e66000;color:#fff;padding:13px 34px;border-radius:26px;font-size:15px;font-weight:800;transition:all .3s;box-shadow:0 4px 14px rgba(230,96,0,.2)}
.dcard .da:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(230,96,0,.35)}
.dcard .da2{display:inline-block;border:2px solid #d2d2d7;color:#1d1d1f;padding:13px 34px;border-radius:26px;font-size:15px;font-weight:700;transition:all .3s}
.dcard .da2:hover{border-color:#e66000;color:#e66000}
@media(max-width:800px){.dg{grid-template-columns:1fr;max-width:400px}}

/* CTA banner */
.cta{background:#e66000;padding:80px 28px;text-align:center}
.cta h2{font-size:clamp(1.7rem,3vw,2.2rem);font-weight:900;color:#fff;margin-bottom:10px}
.cta p{font-size:1.05rem;color:rgba(255,255,255,.75);margin-bottom:32px}
.cta .cw{display:inline-flex;align-items:center;gap:8px;background:#fff;color:#e66000;padding:16px 44px;border-radius:28px;font-size:17px;font-weight:800;transition:all .3s;box-shadow:0 6px 24px rgba(0,0,0,.15)}
.cta .cw:hover{transform:translateY(-3px);box-shadow:0 12px 36px rgba(0,0,0,.2)}
.cta .cn{margin-top:14px;font-size:.82rem;color:rgba(255,255,255,.45)}

/* Footer */
.ft{background:#1d1d1f;padding:56px 0 0}
.ft .fg{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:44px;max-width:1150px;margin:0 auto;padding:0 32px 48px}
.ft .fc h4{color:#fff;font-size:14px;font-weight:800;margin-bottom:16px}
.ft .fc p{font-size:.88rem;color:#aeaeb2;line-height:1.8}
.ft .fc a{font-size:.88rem;color:#aeaeb2;line-height:2.5;display:block;transition:color .2s}
.ft .fc a:hover{color:#ff7139}
.ft .fb{border-top:1px solid rgba(255,255,255,.06);padding:16px 32px;text-align:center;font-size:12px;color:#6e6e73}
.ft .fb a{color:#aeaeb2;margin:0 10px;font-weight:600}
.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}}

/* SUB PAGES */
.pg{background:linear-gradient(180deg,#fffaf5,#fff 40%);padding:120px 28px 48px;text-align:center}
.pg .br{font-size:.85rem;color:#aeaeb2;margin-bottom:8px}
.pg .br a{color:#e66000}.pg .br a:hover{text-decoration:underline}
.pg h1{font-size:clamp(1.9rem,3.5vw,2.6rem);font-weight:900;color:#1d1d1f;margin-bottom:10px}
.pg p{font-size:1.05rem;color:#6e6e73;max-width:620px;margin:0 auto}

/* FAQ */
.faqlist{max-width:780px;margin:0 auto;padding:0 28px 80px}
.faqlist .fq{background:#fff;border:1px solid rgba(0,0,0,.04);border-radius:16px;padding:26px 30px;margin-bottom:10px;transition:all .25s}
.faqlist .fq:hover{border-color:rgba(230,96,0,.12);box-shadow:0 4px 16px rgba(0,0,0,.03)}
.faqlist .fq h2{font-size:1.05rem;font-weight:800;color:#1d1d1f;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.faqlist .fq h2 .q{display:inline-flex;width:26px;height:26px;background:#e66000;color:#fff;border-radius:50%;align-items:center;justify-content:center;font-size:13px;font-weight:800;flex-shrink:0}
.faqlist .fq p{font-size:.92rem;color:#6e6e73;line-height:1.8}

/* Article */
.art{max-width:760px;margin:0 auto;padding:0 28px 80px}
.art .am{font-size:.82rem;color:#aeaeb2;margin-bottom:28px;display:flex;gap:18px;flex-wrap:wrap}
.art h2{font-size:1.4rem;font-weight:900;color:#1d1d1f;margin:36px 0 12px}
.art p{font-size:1rem;color:#424245;line-height:1.95;margin-bottom:16px}
.art .hb{background:rgba(230,96,0,.04);border-left:4px solid #e66000;padding:18px 22px;border-radius:0 12px 12px 0;margin:24px 0}
.art .hb p{color:#1d1d1f;font-weight:700;margin:0}

/* 404 */
.p404{text-align:center;padding:180px 28px 100px}
.p404 .cd{font-size:clamp(6rem,12vw,10rem);font-weight:900;color:rgba(230,96,0,.1);line-height:1}
.p404 h1{font-size:1.7rem;font-weight:900;color:#1d1d1f;margin:4px 0 8px}
.p404 p{color:#6e6e73;font-size:1.05rem;margin-bottom:24px}
.p404 a{display:inline-block;background:#e66000;color:#fff;padding:13px 32px;border-radius:24px;font-weight:800;font-size:15px;transition:all .3s}
.p404 a:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(230,96,0,.35)}

/* Sitemap */
.sm{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:820px;margin:0 auto;padding:0 28px 80px}
.sm .sb{background:#fff;border:1px solid rgba(0,0,0,.04);border-radius:16px;padding:30px}
.sm .sb h2{font-size:1.1rem;font-weight:800;color:#1d1d1f;margin-bottom:16px}
.sm .sb a{display:block;color:#6e6e73;padding:7px 0;font-size:.92rem;transition:all .2s}
.sm .sb a:hover{color:#e66000;padding-left:5px}
@media(max-width:600px){.sm{grid-template-columns:1fr}}

/* Trust bar */
.tb{background:#fafafa;border-bottom:1px solid rgba(0,0,0,.03);padding:10px 0;text-align:center;font-size:.78rem;color:#aeaeb2}
.tb span{margin:0 16px}

/* Mobile */
.ham{display:none;background:none;border:none;cursor:pointer;padding:6px}
.ham span{display:block;width:22px;height:2px;background:#1d1d1f;margin:5px 0;border-radius:1px;transition:all .3s}
@media(max-width:768px){
  .nav .lk{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 32px 20px;gap:0;border-bottom:1px solid rgba(0,0,0,.05);box-shadow:0 8px 20px rgba(0,0,0,.06)}
  .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(24px)}to{opacity:1;transform:translateY(0)}}
.au{animation:fadeUp .55s ease-out both}