:root{
  --bg:#f4f7f6;--surface:#fff;--ink:#111716;--muted:#66716e;--line:#dce4e1;
  --mint:#19c98b;--mint-dark:#0d8f61;--blue:#3877ff;--dark:#101816;
  --container:1220px;--shadow:0 30px 80px rgba(17,32,27,.12);
  --font:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif
}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.7;overflow-x:hidden}img{display:block;max-width:100%}a{text-decoration:none;color:inherit}button,input{font:inherit}button{border:0;cursor:pointer}.container{width:min(calc(100% - 48px),var(--container));margin:auto}.skip-link{position:fixed;top:10px;left:10px;z-index:9999;padding:10px 16px;background:#111;color:#fff;transform:translateY(-160%)}.skip-link:focus{transform:none}
.site-header{position:fixed;inset:0 0 auto;z-index:100;background:rgba(247,250,249,.82);backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:.25s}.site-header.scrolled{background:rgba(255,255,255,.95);border-color:var(--line);box-shadow:0 14px 36px rgba(17,32,27,.08)}.header-inner{height:76px;display:flex;align-items:center;gap:28px}.brand img{width:150px}.desktop-nav{display:flex;gap:27px;margin-left:auto}.desktop-nav a{font-size:14px;color:#46524e}.header-cta{padding:12px 20px;border-radius:999px;background:var(--dark);color:#fff;font-weight:800}.menu-toggle{display:none;width:44px;background:transparent}.menu-toggle span{display:block;height:2px;margin:6px;background:#111}.mobile-nav{position:absolute;top:100%;left:0;width:100%;padding:14px 24px 24px;background:#fff;box-shadow:var(--shadow)}.mobile-nav a{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
.hero{position:relative;min-height:980px;padding:130px 0 90px;overflow:hidden}.hero-bg{position:absolute;inset:0}.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.12}.hero-bg:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(244,247,246,.85),#f4f7f6 80%)}.network{position:absolute;width:360px;height:360px;border:1px solid rgba(25,201,139,.22);border-radius:50%}.network:before,.network:after{content:"";position:absolute;border:1px solid rgba(56,119,255,.16);border-radius:50%}.network:before{inset:60px}.network:after{inset:120px}.network-a{left:-120px;top:160px}.network-b{right:-130px;top:240px}.hero-inner{position:relative}.hero-heading{max-width:820px;margin:auto;text-align:center}.eyebrow{display:inline-block;color:var(--mint-dark);font-size:12px;font-weight:900;letter-spacing:.15em}.hero h1,.section-heading h2,.steps-heading h2,.demo-copy h2,.security-copy h2,.help-heading h2,.complete-box h2{margin:18px 0;font-size:clamp(44px,5.5vw,78px);line-height:1.02;letter-spacing:-.05em}.hero-heading p,.section-heading p,.steps-heading p,.demo-copy>p,.security-copy>p,.help-heading p,.complete-box>p{color:var(--muted);font-size:17px}.progress-line{display:grid;grid-template-columns:auto 1fr auto 1fr auto 1fr auto;align-items:center;max-width:900px;margin:48px auto}.progress-line div{display:flex;flex-direction:column;align-items:center;gap:3px}.progress-line span{display:grid;place-items:center;width:38px;height:38px;border:1px solid #cbd7d2;border-radius:50%;background:#fff;font-size:12px;font-weight:900}.progress-line .active span{background:var(--dark);color:#fff;border-color:var(--dark)}.progress-line strong{font-size:12px}.progress-line i{height:1px;background:#cbd7d2}
.hero-panel{display:grid;grid-template-columns:1.1fr .9fr;max-width:950px;margin:auto;border:1px solid #d8e2de;border-radius:30px;background:rgba(255,255,255,.88);backdrop-filter:blur(20px);box-shadow:var(--shadow);overflow:hidden}.hero-panel-left,.hero-panel-right{padding:35px}.hero-panel-right{background:#101816;color:#fff}.mini-brand{display:flex;align-items:center;gap:13px;margin-bottom:25px}.mini-brand img{width:58px;border-radius:15px}.mini-brand small{display:block;color:var(--mint-dark);font-size:9px;letter-spacing:.13em}.mock-field{margin-top:16px}.mock-field label{display:block;font-size:12px;font-weight:800;margin-bottom:7px}.mock-field>div{display:flex;justify-content:space-between;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#fff}.mock-field span{color:#8a9490}.mock-field b{color:var(--mint-dark);font-size:12px}.hero-panel-left>button{width:100%;margin-top:22px;padding:14px;border-radius:12px;background:var(--dark);color:#fff;font-weight:800}.account-status small{color:#88a29a;font-size:9px;letter-spacing:.13em}.account-status strong{display:block;margin:8px 0;font-size:27px}.account-status span{color:#9daba6}.hero-panel-right ul{list-style:none;padding:0;margin:35px 0 0}.hero-panel-right li{display:flex;align-items:center;gap:10px;padding:14px 0;border-top:1px solid #29332f}.hero-panel-right li i{width:9px;height:9px;border-radius:50%;background:var(--mint)}
section{position:relative}.section-heading{max-width:780px;margin:0 auto 50px}.centered{text-align:center}.prepare{padding:120px 0;background:#fff}.info-strip{display:grid;grid-template-columns:repeat(5,1fr);border-left:1px solid var(--line);border-top:1px solid var(--line)}.info-strip article{padding:25px;min-height:220px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.info-strip b{color:var(--mint-dark)}.info-strip h3{margin-top:42px}.info-strip p{font-size:13px;color:var(--muted)}
.steps-section{padding:130px 0;background:#eef4f1}.steps-layout{display:grid;grid-template-columns:340px 1fr;gap:110px}.steps-heading{position:sticky;top:110px;align-self:start}.timeline{position:relative}.timeline:before{content:"";position:absolute;left:28px;top:42px;bottom:42px;width:1px;background:#bccbc5}.timeline article{position:relative;display:grid;grid-template-columns:58px 1fr;gap:25px;padding:0 0 46px}.timeline-number{position:relative;z-index:2;display:grid;place-items:center;width:58px;height:58px;border-radius:50%;background:#fff;border:1px solid #bdcbc5;color:var(--mint-dark);font-weight:900}.timeline h3{margin:6px 0}.timeline p{margin:0;color:var(--muted)}
.demo-section{padding:130px 0;background:#fff}.demo-layout,.security-layout{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.register-card{padding:34px;border:1px solid #d6e1dc;border-radius:28px;background:#fbfdfc;box-shadow:var(--shadow)}.register-head{display:flex;gap:13px;align-items:center;margin-bottom:26px}.register-head img{width:58px;border-radius:15px}.register-head small{color:var(--mint-dark);font-size:9px;letter-spacing:.13em}.register-head h3{margin:2px 0}.register-card label{display:block;margin:15px 0 7px;font-size:12px;font-weight:800}.input-shell,.verification-row{display:flex;align-items:center;border:1px solid #cdd9d4;border-radius:12px;background:#fff;overflow:hidden}.input-shell input,.verification-row input{flex:1;min-width:0;padding:13px 14px;border:0;outline:0;background:transparent}.input-shell span{padding-right:13px;color:#7c8883;font-size:11px}.password-shell button,.verification-row button{padding:0 14px;background:transparent;color:var(--blue);font-weight:800;font-size:12px}.verification-row button{align-self:stretch;border-left:1px solid var(--line)}.strength-block{margin-top:12px}.strength-label{display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}.strength-bars{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:7px}.strength-bars i{height:5px;border-radius:99px;background:#e0e7e4}.strength-bars i.active{background:var(--mint)}.terms{display:flex!important;align-items:flex-start;gap:8px;font-weight:400!important}.terms input{margin-top:5px}.create-button{width:100%;padding:14px;border-radius:12px;background:var(--dark);color:#fff;font-weight:900}.demo-note{font-size:11px;color:#89928f;text-align:center}.demo-stats{display:grid;grid-template-columns:repeat(3,1fr);margin:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.demo-stats div{padding:17px;border-left:1px solid var(--line)}.demo-stats div:first-child{border-left:0}.demo-stats small{display:block;color:#82908a;font-size:9px;letter-spacing:.12em}.client-visual{position:relative;display:flex;align-items:center;gap:25px;padding:24px;border-radius:22px;background:#eef4f1}.client-visual img{width:120px;border-radius:20px}.client-copy small{color:var(--mint-dark);font-size:9px;letter-spacing:.12em}.client-copy strong{display:block;font-size:22px}.client-copy p{color:var(--muted);font-size:13px}
.security-section{padding:120px 0;background:#eef4f1}.security-list{margin-top:30px;border-top:1px solid #c8d4cf}.security-list article{display:grid;grid-template-columns:45px 1fr;gap:15px;padding:17px 0;border-bottom:1px solid #c8d4cf}.security-list b{color:var(--mint-dark)}.security-list h3{margin:0}.security-list p{margin:3px 0;color:var(--muted);font-size:13px}.security-visual img{width:100%;border-radius:24px}
.help-section{padding:120px 0;background:#fff}.help-layout{display:grid;grid-template-columns:330px 1fr;gap:80px}.diagnostic{display:grid;grid-template-columns:230px 1fr;border:1px solid #d9e2de;border-radius:24px;overflow:hidden}.diagnostic-tabs{display:grid;background:#f0f4f2}.diagnostic-tabs button{padding:18px 20px;background:transparent;text-align:left;border-bottom:1px solid #dce4e1}.diagnostic-tabs .active{background:#101816;color:#fff}.diagnostic-panel{padding:35px}.diagnostic-panel>span{color:var(--blue);font-size:10px;letter-spacing:.13em}.diagnostic-panel h3{font-size:30px;margin:8px 0}.diagnostic-panel p,.diagnostic-panel li{color:var(--muted)}
.complete-section{padding:40px 0 120px;background:#fff}.complete-box{text-align:center;padding:70px 70px 0;border-radius:34px;background:linear-gradient(145deg,#dff8ed,#f6fffb);border:1px solid #cbe8da;overflow:hidden}.complete-icon{display:grid;place-items:center;width:70px;height:70px;margin:0 auto 20px;border-radius:50%;background:var(--mint);color:#fff;font-size:34px;font-weight:900}.complete-box>p{max-width:700px;margin:0 auto}.complete-actions{display:flex;justify-content:center;gap:12px;margin:30px 0}.complete-actions button{padding:14px 22px;border-radius:999px;background:var(--dark);color:#fff;font-weight:800}.complete-actions .secondary{background:#fff;color:#111;border:1px solid #bfd4ca}.complete-box>img{max-width:760px;margin:20px auto -90px}
.site-footer{background:#101816;color:#fff}.footer-main{display:grid;grid-template-columns:1.4fr .7fr .7fr;gap:50px;padding:60px 0}.footer-main img{width:150px;filter:brightness(0) invert(1)}.footer-main p,.footer-main a{color:#9ca9a4;font-size:13px}.footer-main a{display:block;margin:9px 0}.footer-main h3{font-size:12px}.footer-bottom{padding:20px 0;border-top:1px solid #28332f;color:#74827c;font-size:11px}.toast{position:fixed;right:22px;bottom:22px;z-index:300;padding:14px 18px;border-radius:12px;background:#101816;color:#fff;box-shadow:var(--shadow)}
[data-reveal]{opacity:0;transform:translateY(24px);transition:.7s}[data-reveal="left"]{transform:translateX(-30px)}[data-reveal="right"]{transform:translateX(30px)}[data-reveal].visible{opacity:1;transform:none}
@media(max-width:1050px){.desktop-nav,.header-cta{display:none}.menu-toggle{display:block;margin-left:auto}.info-strip{grid-template-columns:repeat(2,1fr)}.steps-layout,.demo-layout,.security-layout,.help-layout{grid-template-columns:1fr}.steps-heading{position:static}.footer-main{grid-template-columns:1fr 1fr}.footer-main>div:first-child{grid-column:1/-1}}
@media(max-width:720px){.container{width:min(calc(100% - 30px),var(--container))}.hero{padding-top:115px}.hero h1{font-size:48px}.progress-line{grid-template-columns:repeat(4,1fr)}.progress-line i{display:none}.hero-panel{grid-template-columns:1fr}.info-strip{grid-template-columns:1fr}.prepare,.steps-section,.demo-section,.security-section,.help-section{padding:80px 0}.demo-stats{grid-template-columns:1fr}.demo-stats div{border-left:0;border-top:1px solid var(--line)}.diagnostic{grid-template-columns:1fr}.diagnostic-tabs{grid-template-columns:1fr 1fr}.complete-box{padding:50px 24px 0}.complete-actions{flex-direction:column}.complete-box>img{margin-bottom:-30px}.footer-main{grid-template-columns:1fr}.footer-main>div:first-child{grid-column:auto}}
@media(max-width:480px){.hero-panel-left,.hero-panel-right,.register-card{padding:24px}.diagnostic-tabs{grid-template-columns:1fr}.client-visual{align-items:flex-start}.client-visual img{width:90px}.section-heading h2,.steps-heading h2,.demo-copy h2,.security-copy h2,.help-heading h2,.complete-box h2{font-size:38px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}[data-reveal]{opacity:1;transform:none}}
img[src*="app-icon"] { object-fit: contain; }