:root{
  --bg:#f5f7f6;
  --surface:#ffffff;
  --surface-soft:#f9fbfa;
  --text:#101828;
  --text-strong:#050b1a;
  --muted:#667085;
  --muted-2:#98a2b3;
  --line:#e6ecea;
  --green:#22c55e;
  --green-dark:#16a34a;
  --green-deep:#11843b;
  --green-soft:#dcfce7;
  --green-tint:#ecfdf5;
  --yellow:#facc15;
  --shadow:0 24px 70px rgba(16,24,40,.10);
  --shadow-green:0 18px 48px rgba(34,197,94,.26);
  --radius:30px;
  --shell:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;min-width:320px;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
.shell{width:min(calc(100% - 48px),var(--shell));margin:0 auto}
.section{padding:112px 0}
.page-bg{position:fixed;inset:0;z-index:-1;overflow:hidden;background:linear-gradient(180deg,#fff 0%,#f5f7f6 45%,#fff 100%)}
.grid{position:absolute;inset:0;background-image:linear-gradient(rgba(16,24,40,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(16,24,40,.045) 1px,transparent 1px);background-size:64px 64px;mask-image:linear-gradient(180deg,rgba(0,0,0,.65),transparent 72%)}
.glow{position:absolute;border-radius:999px;filter:blur(30px);opacity:.75}.glow-a{width:460px;height:460px;left:-160px;top:130px;background:radial-gradient(circle,rgba(34,197,94,.24),transparent 66%)}.glow-b{width:520px;height:520px;right:-170px;top:460px;background:radial-gradient(circle,rgba(45,212,191,.20),transparent 65%)}
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:saturate(1.4) blur(18px);border-bottom:1px solid rgba(16,24,40,.07)}
.nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:26px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}.brand-logo{width:46px;height:46px;border-radius:14px;box-shadow:0 12px 30px rgba(34,197,94,.25)}.brand-copy{display:flex;flex-direction:column;line-height:1.08}.brand-copy strong{font-size:18px;font-weight:900;letter-spacing:-.04em;color:#101112}.brand-copy small{font-size:12px;margin-top:4px;color:var(--muted);font-weight:700;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:34px;margin-left:auto}.nav-links a{position:relative;font-size:15px;font-weight:800;color:#344054;padding:12px 0}.nav-links a:after{content:"";position:absolute;left:50%;bottom:4px;width:0;height:3px;border-radius:999px;background:var(--green);transform:translateX(-50%);transition:width .22s ease}.nav-links a:hover{color:var(--green-dark)}.nav-links a:hover:after{width:100%}
.nav-download{height:46px;display:inline-flex;align-items:center;justify-content:center;padding:0 24px;border-radius:999px;background:linear-gradient(135deg,var(--green),var(--green-dark));color:white;font-weight:900;box-shadow:var(--shadow-green);transition:transform .2s ease,box-shadow .2s ease}.nav-download:hover{transform:translateY(-2px);box-shadow:0 22px 56px rgba(34,197,94,.32)}
.menu-btn{display:none;border:0;background:#fff;width:50px;height:50px;border-radius:18px;box-shadow:0 10px 28px rgba(16,24,40,.10);align-items:center;justify-content:center;flex-direction:column;gap:5px}.menu-btn span{width:22px;height:3px;background:#111827;border-radius:999px;transition:.2s ease}.menu-open .menu-btn span:nth-child(1){transform:translateY(8px) rotate(45deg)}.menu-open .menu-btn span:nth-child(2){opacity:0}.menu-open .menu-btn span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.hero{min-height:calc(100vh - 78px);display:grid;grid-template-columns:1.03fr .97fr;gap:68px;align-items:center;padding:72px 0 84px}.overline{margin:0 0 14px;color:var(--green-dark);font-weight:900;letter-spacing:.12em;text-transform:uppercase;font-size:13px}.hero h1,.section-heading h2,.split-copy h2,.download-card h2{margin:0;color:var(--text-strong);font-weight:950;letter-spacing:-.075em;line-height:.96}.hero h1{font-size:clamp(52px,7vw,96px);max-width:680px}.hero-subtitle{font-size:20px;line-height:1.85;color:#66758a;font-weight:700;max-width:660px;margin:30px 0 0}.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:34px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:0 24px;border-radius:999px;border:1px solid transparent;font-weight:900;font-size:16px;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}.btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2.3;stroke-linecap:round;stroke-linejoin:round}.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;box-shadow:var(--shadow-green)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 24px 60px rgba(34,197,94,.35)}.btn-secondary{background:#fff;color:#172033;border-color:#edf0ef;box-shadow:0 14px 32px rgba(16,24,40,.08)}.btn-secondary:hover{transform:translateY(-2px);border-color:#bbf7d0;color:var(--green-dark)}.btn-wide{width:100%;margin-top:18px}
.hero-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:36px 0 0;max-width:560px}.hero-metrics div{padding:0 24px;border-left:1px solid #dbe4e0}.hero-metrics div:first-child{border-left:0;padding-left:0}.hero-metrics dt{font-size:32px;font-weight:950;letter-spacing:-.04em;color:#111827}.hero-metrics dd{margin:6px 0 0;color:#8b95a7;font-weight:800}
.hero-visual{position:relative;min-height:650px;display:grid;place-items:center}.phone-frame{position:relative;background:linear-gradient(145deg,#ffffff,#f1f5f4);border:1px solid rgba(16,24,40,.08);border-radius:46px;padding:12px;box-shadow:0 32px 90px rgba(16,24,40,.16),inset 0 0 0 1px rgba(255,255,255,.7)}.phone-frame:before{content:"";position:absolute;inset:9px;border-radius:38px;border:1px solid rgba(16,24,40,.05);pointer-events:none;z-index:2}.phone-frame img{width:100%;height:100%;object-fit:cover;object-position:top center;border-radius:36px;background:#f5f5f7}.phone-speaker{position:absolute;left:50%;top:18px;z-index:4;transform:translateX(-50%);width:72px;height:6px;border-radius:999px;background:rgba(17,24,39,.16);box-shadow:0 0 0 1px rgba(255,255,255,.65)}.hero-phone{width:min(390px,86vw);aspect-ratio:390/844;transform:rotate(2deg)}.truth-card{position:absolute;z-index:6;min-width:190px;padding:16px 18px;border-radius:22px;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border:1px solid rgba(16,24,40,.08);box-shadow:0 20px 50px rgba(16,24,40,.14)}.truth-card b{display:block;color:#102034;font-size:16px;font-weight:950}.truth-card span{display:block;margin-top:4px;color:var(--muted);font-size:13px;font-weight:800}.top-card{right:8px;top:84px}.bottom-card{left:10px;bottom:90px}
.section-heading{text-align:center;max-width:760px;margin:0 auto 52px}.section-heading h2{font-size:clamp(38px,5.5vw,70px)}.section-heading p{margin:20px auto 0;color:#66758a;font-size:18px;line-height:1.8;font-weight:700}.real-app{padding-top:96px}.screen-showcase{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center;padding:48px;border-radius:42px;background:rgba(255,255,255,.72);border:1px solid rgba(16,24,40,.08);box-shadow:var(--shadow)}.screen-index{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:18px;background:var(--green-soft);color:var(--green-deep);font-weight:950}.screen-copy h3{margin:22px 0 0;font-size:44px;letter-spacing:-.055em;line-height:1;color:#101828;font-weight:950}.screen-copy p{font-size:18px;line-height:1.85;color:#66758a;font-weight:700;margin:18px 0 26px}.screen-tabs{display:flex;flex-wrap:wrap;gap:12px}.screen-tabs button{cursor:pointer;border:1px solid #e4e9e7;background:#fff;color:#667085;border-radius:999px;padding:12px 17px;font-weight:900;box-shadow:0 10px 24px rgba(16,24,40,.06);transition:.2s ease}.screen-tabs button:hover,.screen-tabs button.active{background:var(--green);border-color:var(--green);color:#fff;box-shadow:0 16px 34px rgba(34,197,94,.25)}.showcase-phone{width:min(420px,86vw);aspect-ratio:390/844;justify-self:center}.showcase-phone img{transition:opacity .18s ease,transform .18s ease}.showcase-phone img.switching{opacity:.18;transform:scale(.985)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.feature-card{padding:28px;border-radius:30px;background:#fff;border:1px solid rgba(16,24,40,.075);box-shadow:0 16px 42px rgba(16,24,40,.07);min-height:242px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}.feature-card:hover{transform:translateY(-5px);border-color:#bbf7d0;box-shadow:0 24px 60px rgba(16,24,40,.10)}.feature-icon{display:inline-flex;align-items:center;justify-content:center;width:58px;height:58px;border-radius:18px;background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;font-weight:950;box-shadow:0 14px 30px rgba(34,197,94,.24)}.feature-card h3{margin:24px 0 10px;font-size:24px;font-weight:950;letter-spacing:-.04em;color:#111827}.feature-card p{margin:0;color:#66758a;line-height:1.75;font-weight:700}
.split-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center;padding:52px;border-radius:44px;background:linear-gradient(135deg,#ffffff 0%,#f8fffb 48%,#dcfce7 100%);border:1px solid #bbf7d0;box-shadow:0 24px 70px rgba(34,197,94,.13)}.split-copy h2{font-size:clamp(36px,5vw,64px)}.split-copy p{font-size:18px;line-height:1.85;color:#66758a;font-weight:700}.check-list{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:13px}.check-list li{position:relative;padding-left:32px;color:#344054;font-weight:900}.check-list li:before{content:"";position:absolute;left:0;top:4px;width:20px;height:20px;border-radius:50%;background:var(--green-soft)}.check-list li:after{content:"";position:absolute;left:6px;top:9px;width:8px;height:5px;border-left:3px solid var(--green-dark);border-bottom:3px solid var(--green-dark);transform:rotate(-45deg)}.mini-screen-row{display:flex;align-items:center;justify-content:center;gap:24px}.mini-phone{width:245px;aspect-ratio:390/844;padding:8px;border-radius:36px;background:#fff;border:1px solid rgba(16,24,40,.08);box-shadow:0 24px 64px rgba(16,24,40,.14);overflow:hidden}.mini-phone img{width:100%;height:100%;object-fit:cover;object-position:top;border-radius:28px}.mini-phone.raised{transform:translateY(-34px)}
.download-card{display:grid;grid-template-columns:1fr 330px;gap:42px;align-items:center;padding:54px;border-radius:44px;background:#111827;color:#fff;overflow:hidden;position:relative;box-shadow:0 34px 90px rgba(17,24,39,.22)}.download-card:before{content:"";position:absolute;right:-90px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(34,197,94,.48),transparent 68%)}.download-card>*{position:relative}.download-card .overline{color:#86efac}.download-card h2{font-size:clamp(38px,5.5vw,72px);color:#fff}.download-card p{font-size:18px;line-height:1.8;color:#cbd5e1;font-weight:700;max-width:650px}.download-box{background:#fff;color:#101828;border-radius:30px;padding:26px;box-shadow:0 22px 60px rgba(0,0,0,.18);text-align:center}.download-box img{width:82px;height:82px;border-radius:23px;margin:0 auto 14px;box-shadow:0 16px 36px rgba(34,197,94,.28)}.download-box strong{display:block;font-size:22px;font-weight:950}.download-box span{display:block;margin-top:8px;color:#667085;font-weight:800}
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto}.faq-list details{background:#fff;border:1px solid rgba(16,24,40,.08);border-radius:24px;padding:22px 26px;box-shadow:0 14px 38px rgba(16,24,40,.06)}.faq-list summary{cursor:pointer;font-size:18px;font-weight:950;color:#111827}.faq-list p{margin:14px 0 0;color:#66758a;line-height:1.75;font-weight:700}.footer{padding:34px 0;border-top:1px solid rgba(16,24,40,.08);background:#fff}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}.footer p{margin:0;color:#8b95a7;font-weight:700}.footer-links{display:flex;gap:18px;font-weight:900;color:#344054}.footer-links a:hover{color:var(--green-dark)}
.toast{position:fixed;left:50%;bottom:28px;z-index:100;transform:translate(-50%,18px);opacity:0;pointer-events:none;background:#fff;color:#0f6b35;border:1px solid #bbf7d0;box-shadow:0 20px 60px rgba(34,197,94,.22);border-radius:999px;padding:14px 22px;font-weight:900;transition:.24s ease}.toast.show{opacity:1;transform:translate(-50%,0)}
.reveal{opacity:1;transform:none;transition:opacity .72s ease,transform .72s ease}.reveal.visible{opacity:1;transform:none}.delay-1{transition-delay:.08s}.delay-2{transition-delay:.16s}
@media (max-width:980px){.hero{grid-template-columns:1fr;gap:34px;text-align:center;padding-top:56px}.hero-subtitle,.hero-metrics{margin-left:auto;margin-right:auto}.hero-actions{justify-content:center}.hero-visual{min-height:auto}.truth-card{display:none}.screen-showcase,.split-panel,.download-card{grid-template-columns:1fr}.screen-copy{text-align:center}.screen-tabs{justify-content:center}.feature-grid{grid-template-columns:repeat(2,1fr)}.download-card{text-align:center}.download-card p{margin-left:auto;margin-right:auto}.mini-phone{width:min(42vw,245px)}}
@media (max-width:820px){.shell{width:min(calc(100% - 34px),var(--shell))}.nav{height:70px}.brand-logo{width:48px;height:48px}.brand-copy strong{font-size:20px}.brand-copy small{display:none}.menu-btn{display:flex}.nav-download{display:none}.nav-links{position:fixed;left:17px;right:17px;top:84px;display:grid;gap:12px;background:rgba(255,255,255,.96);border:1px solid rgba(16,24,40,.1);border-radius:28px;padding:18px;box-shadow:0 26px 70px rgba(16,24,40,.20);opacity:0;visibility:hidden;transform:translateY(-12px);transition:.22s ease}.menu-open .nav-links{opacity:1;visibility:visible;transform:translateY(0)}.nav-links a{padding:17px 18px;border-radius:18px;background:#f8faf9;text-align:left}.nav-links a:after{display:none}.hero h1{font-size:clamp(48px,15vw,78px)}.hero-subtitle{font-size:18px}.hero-metrics{grid-template-columns:repeat(3,1fr)}.hero-metrics div{padding:0 10px}.hero-metrics dt{font-size:28px}.hero-metrics dd{font-size:13px}.section{padding:78px 0}.screen-showcase,.split-panel,.download-card{padding:26px;border-radius:32px}.feature-grid{grid-template-columns:1fr}.footer-inner{flex-direction:column;text-align:center}.footer-brand{justify-content:center}.mini-screen-row{gap:12px}.mini-phone.raised{transform:translateY(-16px)}}
@media (max-width:560px){.hero{padding:38px 0 62px}.hero h1{font-size:clamp(40px,11.4vw,58px);line-height:1.03}.hero-subtitle{font-size:16px;line-height:1.72}.hero-actions{display:grid}.btn{width:100%;min-height:58px}.hero-metrics{display:none}.phone-frame{border-radius:36px;padding:8px}.phone-frame img{border-radius:28px}.phone-frame:before{border-radius:30px;inset:6px}.phone-speaker{display:none}.hero-phone,.showcase-phone{width:min(90vw,360px)}.section-heading h2{font-size:38px}.section-heading p,.screen-copy p,.split-copy p,.download-card p{font-size:16px}.screen-copy h3{font-size:36px}.screen-tabs button{padding:10px 14px;font-size:14px}.mini-screen-row{align-items:flex-start}.mini-phone{width:calc(50vw - 28px);border-radius:28px}.mini-phone img{border-radius:22px}.download-box{padding:22px}.toast{width:min(calc(100% - 34px),420px);text-align:center;border-radius:22px}}




.seo-text{position:relative;margin:-30px auto 0;padding:0 0 34px;color:#66758a;font-size:16px;line-height:1.85}.seo-text h2{margin:0 0 10px;color:#101828;font-size:28px;line-height:1.25;letter-spacing:-.04em;font-weight:950}.seo-text p{max-width:980px;margin:8px 0 0;font-weight:700}@media (max-width:820px){.seo-text{margin-top:-18px;padding-bottom:24px;text-align:left}.seo-text h2{font-size:24px}.seo-text p{font-size:15px;line-height:1.75}}



/* landing seo pages */
.seo-links{position:relative;margin:0 auto 22px;padding:22px 24px;background:rgba(255,255,255,.82);border:1px solid rgba(34,197,94,.16);border-radius:28px;box-shadow:0 18px 50px rgba(16,24,40,.07)}.seo-links h2{margin:0 0 8px;color:#101828;font-size:26px;line-height:1.25;letter-spacing:-.03em;font-weight:950}.seo-links p{margin:0 0 16px;color:#66758a;line-height:1.75;font-weight:750}.topic-links{display:flex;flex-wrap:wrap;gap:10px}.topic-links a{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:10px 16px;border-radius:999px;background:#ecfdf3;color:#087a3d;border:1px solid #bbf7d0;font-weight:950;box-shadow:0 10px 24px rgba(34,197,94,.10)}.topic-links a:hover{background:#22c55e;color:#fff;border-color:#22c55e;transform:translateY(-1px)}.landing-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,420px);gap:58px;align-items:center;padding:76px 0 38px}.landing-copy h1{font-size:clamp(42px,6vw,76px);line-height:1.03;letter-spacing:-.07em;margin:12px 0 22px;color:#101828}.landing-copy p{font-size:18px;line-height:1.85;color:#5f6f86;font-weight:750;max-width:780px}.landing-phone{width:min(78vw,365px);margin:0 auto}.landing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.landing-card{background:#fff;border:1px solid rgba(16,24,40,.08);border-radius:28px;padding:26px;box-shadow:0 18px 54px rgba(16,24,40,.07)}.landing-card h2{margin:0 0 12px;color:#101828;font-size:24px;line-height:1.25;font-weight:950;letter-spacing:-.03em}.landing-card p{margin:0;color:#66758a;line-height:1.78;font-weight:750}@media (max-width:980px){.landing-hero{grid-template-columns:1fr;text-align:center;padding-top:54px}.landing-copy p{margin-left:auto;margin-right:auto}.landing-grid{grid-template-columns:1fr}.topic-links{justify-content:center}}@media (max-width:560px){.seo-links{padding:18px;border-radius:22px}.seo-links h2{font-size:22px}.topic-links{display:grid}.topic-links a{width:100%}.landing-copy h1{font-size:40px}.landing-copy p{font-size:16px}.landing-hero{text-align:left}.landing-hero .hero-actions{display:grid}.landing-grid{padding-top:42px}.landing-card{padding:22px;border-radius:22px}}

/* download version list */
.version-list-wrap{display:grid;gap:18px;max-width:860px}.version-card{background:#fff;border:1px solid rgba(16,24,40,.08);border-radius:28px;padding:24px 26px;box-shadow:0 18px 54px rgba(16,24,40,.07)}.version-card-current{border-color:rgba(34,197,94,.28);background:linear-gradient(180deg,#f0fdf4 0%,#fff 100%);box-shadow:0 20px 60px rgba(34,197,94,.12)}.version-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}.version-label{margin:0 0 6px;color:#64748b;font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.version-name{margin:0;color:#101828;font-size:30px;line-height:1.1;font-weight:950;letter-spacing:-.04em}.version-badge{display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border-radius:999px;background:#22c55e;color:#fff;font-size:13px;font-weight:900}.version-desc{margin:0 0 12px;color:#475569;line-height:1.75;font-weight:700}.version-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;color:#64748b;font-size:14px;font-weight:700}.version-meta span{display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:999px;background:#f8fafc;border:1px solid #e2e8f0}.version-download-btn{width:100%;max-width:320px}.version-history-block{margin-top:8px}.version-history-title{margin:0 0 14px;color:#101828;font-size:24px;font-weight:950;letter-spacing:-.03em}.version-history-list{display:grid;gap:14px}.version-empty{padding:28px;border-radius:24px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;font-weight:800;text-align:center}.version-loading{padding:28px;border-radius:24px;background:#f8fafc;border:1px dashed #dbe3ef;color:#64748b;font-weight:700;text-align:center}