*{box-sizing:border-box;margin:0;padding:0}
html,body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;color:#1f2937;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
/* header */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid #f1f1f1}
.header .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo img{height:28px}
.nav{display:flex;gap:32px;align-items:center}
.nav a{font-size:15px;color:#4b5563;font-weight:500;transition:color .2s}
.nav a:hover,.nav a.active{color:#e11d48}
.nav .cta{background:#e11d48;color:#fff;padding:8px 18px;border-radius:999px;font-size:14px}
.nav .cta:hover{background:#be123c;color:#fff}
/* hero */
.hero{position:relative;text-align:center;padding:110px 24px 90px;overflow:hidden}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);z-index:-1}
.hero::before{width:520px;height:520px;background:#fee2e2;top:-120px;left:-120px;opacity:.6}
.hero::after{width:460px;height:460px;background:#dbeafe;top:80px;right:-120px;opacity:.55}
.hero h1{font-size:44px;font-weight:800;color:#111827;letter-spacing:-.02em;margin-bottom:20px}
.hero .lead{color:#6b7280;font-size:17px;max-width:720px;margin:0 auto 32px}
.counter{display:inline-flex;gap:8px;align-items:center;color:#6b7280;font-size:14px;margin-bottom:28px;flex-wrap:wrap;justify-content:center}
.counter .digits{display:inline-flex;gap:4px}
.counter .digits span{display:inline-flex;width:26px;height:30px;align-items:center;justify-content:center;background:#fff;border:1px solid #e5e7eb;border-radius:4px;font-weight:700;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;color:#374151;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.counter em{font-style:normal;font-weight:700;color:#111827;margin-left:4px}
.btn-primary{display:inline-flex;align-items:center;gap:10px;background:#e11d48;color:#fff;padding:16px 34px;border-radius:999px;font-size:17px;font-weight:700;box-shadow:0 10px 20px -6px rgba(225,29,72,.35);transition:transform .2s,box-shadow .2s}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 14px 26px -6px rgba(225,29,72,.45)}
.plat-row{display:flex;justify-content:center;align-items:center;gap:20px;margin-top:22px;color:#6b7280;font-size:14px;flex-wrap:wrap}
.plat-row a{display:inline-flex;align-items:center;gap:6px;padding:4px 8px;transition:color .2s}
.plat-row a:hover{color:#e11d48}
.plat-row .sep{width:1px;height:12px;background:#d1d5db}
/* sections */
.sec{padding:80px 24px}
.sec-head{text-align:center;margin-bottom:56px}
.sec-head .kicker{display:inline-block;padding:6px 14px;border-radius:999px;background:#fef2f2;color:#e11d48;font-size:13px;font-weight:600;margin-bottom:16px}
.sec-head h2{font-size:34px;font-weight:800;color:#111827;letter-spacing:-.01em;margin-bottom:14px}
.sec-head p{color:#6b7280;font-size:16px;max-width:720px;margin:0 auto}
.sec-head .en{display:block;color:#9ca3af;font-size:12px;letter-spacing:.15em;margin-top:8px;text-transform:uppercase}
/* advantages */
.adv{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.adv .card{padding:36px 28px;text-align:left}
.adv .card .no{display:inline-block;font-family:ui-monospace,monospace;color:#e11d48;font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.1em}
/* feature grid */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.card{background:#fff;border:1px solid #f1f1f1;border-radius:20px;padding:28px;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -20px rgba(0,0,0,.1)}
.card img{width:56px;height:56px;object-fit:contain;margin-bottom:18px}
.card h4{font-size:18px;font-weight:700;color:#111827;margin-bottom:10px}
.card p{color:#6b7280;font-size:14px;line-height:1.7}
/* alt bg */
.sec-alt{background:linear-gradient(180deg,#fafafa 0%,#fff 100%)}
/* showcase */
.showcase{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:64px 0;border-bottom:1px solid #f3f4f6}
.showcase:last-child{border-bottom:none}
.showcase.reverse{direction:rtl}
.showcase.reverse>*{direction:ltr}
.showcase .txt h3{font-size:28px;font-weight:800;color:#111827;margin-bottom:16px;letter-spacing:-.01em}
.showcase .txt p{color:#6b7280;font-size:15px;margin-bottom:18px}
.showcase .txt ul{list-style:none}
.showcase .txt li{padding-left:22px;position:relative;color:#4b5563;font-size:14px;margin-bottom:8px}
.showcase .txt li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;background:#e11d48;border-radius:2px;transform:rotate(45deg)}
.showcase .pic{background:#f9fafb;border-radius:20px;overflow:hidden;padding:20px;border:1px solid #f1f1f1}
/* news */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-item{background:#fff;border:1px solid #f1f1f1;border-radius:16px;padding:26px;transition:box-shadow .2s,transform .2s}
.news-item:hover{transform:translateY(-3px);box-shadow:0 20px 40px -20px rgba(0,0,0,.1)}
.news-item h4{font-size:16px;font-weight:700;color:#111827;line-height:1.55;margin-bottom:12px}
.news-item p{color:#6b7280;font-size:13px;margin-bottom:16px}
.news-item time{color:#9ca3af;font-size:12px}
/* faq */
.faq{max-width:820px;margin:0 auto}
.faq details{background:#fff;border:1px solid #f1f1f1;border-radius:14px;padding:20px 24px;margin-bottom:14px;transition:box-shadow .2s}
.faq details[open]{box-shadow:0 10px 24px -12px rgba(0,0,0,.08)}
.faq summary{cursor:pointer;font-weight:600;color:#111827;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::after{content:"+";font-size:22px;color:#e11d48;font-weight:300}
.faq details[open] summary::after{content:"−"}
.faq p{color:#6b7280;margin-top:14px;font-size:14px}
/* voices */
.voices{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.voice{background:#fff;border:1px solid #f1f1f1;border-radius:18px;padding:28px}
.voice .who{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.voice .avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#fca5a5,#f87171);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.voice .name{font-weight:700;color:#111827;font-size:15px}
.voice .role{font-size:12px;color:#9ca3af}
.voice q{color:#4b5563;font-size:14px;line-height:1.8;display:block;quotes:"" ""}
/* cta band */
.cta-band{background:linear-gradient(120deg,#e11d48 0%,#be123c 100%);color:#fff;text-align:center;padding:70px 24px;border-radius:24px;margin:40px auto;max-width:1200px}
.cta-band h2{font-size:32px;font-weight:800;margin-bottom:14px}
.cta-band p{opacity:.9;margin-bottom:28px}
.cta-band .btn-primary{background:#fff;color:#e11d48;box-shadow:0 10px 20px -6px rgba(0,0,0,.2)}
.cta-band .btn-primary:hover{color:#e11d48}
/* footer */
.site-footer{background:#0f172a;color:#94a3b8;padding:60px 24px 30px;margin-top:40px}
.ft-main{display:grid;grid-template-columns:1.4fr 3fr;gap:40px;padding-bottom:36px;border-bottom:1px solid #1e293b}
.ft-left .ft-logo{height:30px;margin-bottom:16px;filter:brightness(0) invert(1)}
.ft-left p{font-size:13px;line-height:1.8;max-width:320px}
.ft-links{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.ft-list{list-style:none;font-size:13px}
.ft-list .ft-title{color:#e5e7eb;font-weight:700;margin-bottom:14px;font-size:14px}
.ft-list li{margin-bottom:10px}
.ft-list a{color:#94a3b8;transition:color .2s}
.ft-list a:hover{color:#fff}
.ft-copyright{padding-top:22px;font-size:12px;color:#64748b;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.ft-copyright a{color:#94a3b8;margin:0 6px}
.ft-copyright a:hover{color:#fff}
/* generic page hero */
.page-hero{padding:80px 24px 40px;text-align:center;background:linear-gradient(180deg,#fef2f2 0%,#fff 100%)}
.page-hero h1{font-size:38px;font-weight:800;color:#111827;margin-bottom:12px}
.page-hero p{color:#6b7280;max-width:720px;margin:0 auto}
/* legal / long content */
.legal{max-width:820px;margin:40px auto 60px;padding:0 24px}
.legal h2{font-size:20px;font-weight:700;color:#111827;margin:32px 0 12px}
.legal p{color:#4b5563;font-size:15px;margin-bottom:12px}
.legal ul{padding-left:20px;color:#4b5563;font-size:15px;margin-bottom:12px}
.legal ul li{margin-bottom:6px}
/* changelog */
.log-list{max-width:900px;margin:40px auto 60px;padding:0 24px}
.log-item{display:grid;grid-template-columns:180px 1fr;gap:24px;padding:28px 0;border-bottom:1px dashed #e5e7eb}
.log-ver strong{display:block;font-size:22px;color:#e11d48;font-weight:800}
.log-ver span{color:#9ca3af;font-size:13px}
.log-body h3{font-size:18px;font-weight:700;color:#111827;margin-bottom:12px}
.log-body ul{padding-left:20px;color:#4b5563;font-size:14px}
.log-body li{margin-bottom:6px}
/* download page */
.dl-list{max-width:960px;margin:0 auto;display:grid;gap:24px}
.dl-item{display:grid;grid-template-columns:200px 1fr auto;gap:28px;align-items:center;background:#fff;border:1px solid #f1f1f1;border-radius:18px;padding:24px 28px;transition:box-shadow .2s}
.dl-item:hover{box-shadow:0 20px 40px -20px rgba(0,0,0,.1)}
.dl-item .pic{background:#f9fafb;border-radius:14px;padding:14px;height:140px;display:flex;align-items:center;justify-content:center}
.dl-item .pic img{max-height:100%;object-fit:contain}
.dl-item .info h3{font-size:20px;font-weight:700;color:#111827;margin-bottom:8px}
.dl-item .info p{color:#6b7280;font-size:14px;margin-bottom:6px}
.dl-item .info small{color:#9ca3af;font-size:12px}
.dl-item .act{display:flex;flex-direction:column;gap:10px}
.dl-item .act a{display:inline-block;background:#e11d48;color:#fff;padding:10px 22px;border-radius:999px;font-size:14px;font-weight:600;text-align:center;transition:background .2s}
.dl-item .act a.ghost{background:#fff;color:#374151;border:1px solid #e5e7eb}
.dl-item .act a:hover{background:#be123c;color:#fff}
.dl-item .act a.ghost:hover{background:#f9fafb;color:#111827}
/* app page qr */
.qr-row{display:flex;justify-content:center;gap:40px;margin-top:36px;flex-wrap:wrap}
.qr{background:#fff;border:1px solid #f1f1f1;border-radius:18px;padding:22px;width:220px;text-align:center;box-shadow:0 10px 30px -18px rgba(0,0,0,.15)}
.qr img{width:170px;height:170px;margin:0 auto 12px}
.qr strong{display:block;color:#111827;font-size:16px;margin-bottom:4px}
.qr span{color:#9ca3af;font-size:12px}
/* license image */
.license-wrap{max-width:820px;margin:40px auto 60px;padding:0 24px;text-align:center}
.license-wrap .frame{background:#fff;border:1px solid #f1f1f1;border-radius:16px;padding:24px;box-shadow:0 20px 40px -24px rgba(0,0,0,.12)}
.license-wrap p{color:#6b7280;font-size:14px;margin-top:16px}
/* contact */
.contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;max-width:1000px;margin:0 auto;align-items:start}
.contact-info{background:#fff;border:1px solid #f1f1f1;border-radius:18px;padding:32px}
.contact-info h3{font-size:20px;font-weight:700;color:#111827;margin-bottom:18px}
.contact-info dl{display:grid;grid-template-columns:110px 1fr;gap:14px 12px}
.contact-info dt{color:#9ca3af;font-size:14px}
.contact-info dd{color:#374151;font-size:14px}
.contact-form{background:#fff;border:1px solid #f1f1f1;border-radius:18px;padding:32px}
.contact-form label{display:block;color:#374151;font-size:13px;font-weight:600;margin-bottom:6px}
.contact-form input,.contact-form textarea{width:100%;padding:12px 14px;border:1px solid #e5e7eb;border-radius:10px;font:inherit;color:#111827;margin-bottom:16px;background:#fafafa}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:#e11d48;background:#fff}
.contact-form button{background:#e11d48;color:#fff;border:none;padding:12px 28px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s}
.contact-form button:hover{background:#be123c}
/* product intro */
.prod-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
/* responsive */
@media(max-width:900px){
.hero h1{font-size:32px}.sec-head h2{font-size:26px}
.adv,.news,.voices,.prod-list{grid-template-columns:1fr}
.showcase{grid-template-columns:1fr;gap:24px}.showcase.reverse{direction:ltr}
.dl-item{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.ft-main{grid-template-columns:1fr}.ft-links{grid-template-columns:repeat(2,1fr)}
.log-item{grid-template-columns:1fr}
.nav{display:none}
}