*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fafafa;color:#111;font:14px/1.65 Inter,"PingFang SC","Microsoft YaHei",sans-serif}body:before{content:"";position:fixed;inset:0;background-image:linear-gradient(#00000008 1px,transparent 1px),linear-gradient(90deg,#00000008 1px,transparent 1px);background-size:48px 48px;pointer-events:none}a{color:inherit;text-decoration:none}.xh-wrap{width:min(1152px,calc(100% - 48px));margin:auto;position:relative}.xh-nav{height:68px;position:fixed;inset:0 0 auto;z-index:50;background:#fafafae8;border-bottom:1px solid #e5e5e5;backdrop-filter:blur(14px);transition:.25s}.xh-nav.scrolled{background:#fffffff5;box-shadow:0 2px 15px #0000000b}.xh-nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.xh-brand{display:flex;align-items:center;gap:10px}.xh-brand>span{width:34px;height:34px;background:#111;color:#fff;border-radius:8px;display:grid;place-items:center;font-weight:800}.xh-brand div{display:flex;flex-direction:column;line-height:1.25}.xh-brand strong{font-size:15px}.xh-brand small{font-size:9px;letter-spacing:1px;color:#777}.xh-menu{display:flex;align-items:center;gap:4px}.xh-menu a{padding:8px 13px;border-radius:6px;font-weight:600;color:#555}.xh-menu a:hover{background:#eee;color:#111}.xh-menu .xh-login{background:#111;color:#fff;margin-left:8px;padding-inline:18px}.xh-menu-btn{display:none;border:0;background:none;font-size:22px}.xh-hero{padding:148px 0 88px}.xh-hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:70px;align-items:center}.xh-eyebrow{display:inline-flex;align-items:center;gap:9px;border:1px solid #dedede;border-radius:30px;background:#fff;padding:6px 13px;font-size:12px;font-weight:700}.xh-eyebrow i,.xh-card-foot i{width:7px;height:7px;border-radius:50%;background:#16a34a;box-shadow:0 0 8px #16a34a88}.xh-hero h1{font-size:55px;line-height:1.1;letter-spacing:-2px;margin:24px 0 20px}.xh-hero h1 em{font-style:normal;color:#777}.xh-lead{font-size:16px;color:#666;max-width:580px;margin:0 0 31px}.xh-actions{display:flex;gap:10px}.xh-btn{min-height:44px;padding:10px 18px;border-radius:7px;font-weight:750;display:inline-flex;align-items:center;justify-content:center;gap:18px;border:1px solid #d7d7d7}.xh-btn.dark{background:#111;color:#fff;border-color:#111}.xh-btn.light{background:#fff}.xh-btn:hover{transform:translateY(-1px);box-shadow:0 7px 20px #0001}.xh-metrics{display:grid;grid-template-columns:repeat(3,1fr);margin-top:42px;border-top:1px solid #ddd;padding-top:20px}.xh-metrics div{display:flex;flex-direction:column;border-right:1px solid #ddd;padding-right:15px}.xh-metrics div+div{padding-left:18px}.xh-metrics div:last-child{border:0}.xh-metrics b{font-size:13px}.xh-metrics span{font-size:11px;color:#888}.xh-security-card{background:#fff;border:1px solid #ddd;border-radius:18px;padding:30px;box-shadow:0 20px 55px #00000012;position:relative}.xh-card-label{position:absolute;right:20px;top:-12px;background:#111;color:#fff;padding:4px 10px;border-radius:4px;font:700 10px monospace;letter-spacing:1px}.xh-security-card h2{font-size:20px;margin:2px 0 7px}.xh-security-card h2 span{font-size:15px}.xh-security-card>p{margin:0;color:#777}.xh-security-card ul{list-style:none;margin:24px 0 17px;padding:0}.xh-security-card li{padding:12px 0;border-top:1px solid #eee;display:flex;justify-content:space-between}.xh-security-card li span{color:#777}.xh-security-card li b{font-family:monospace;font-size:12px}.xh-card-foot{display:flex;gap:8px;align-items:center;background:#f6f6f6;padding:9px 11px;border-radius:6px;font-size:11px;font-weight:700}.xh-section{padding:92px 0;border-top:1px solid #e5e5e5}.xh-soft{background:#f3f3f3}.xh-section-head{max-width:650px;margin-bottom:40px}.xh-section-head span,.xh-cta small{font:700 11px monospace;letter-spacing:1.5px;color:#777}.xh-section-head h2{font-size:35px;letter-spacing:-1px;margin:9px 0}.xh-section-head p{font-size:15px;color:#777;margin:0}.xh-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid #ddd;background:#ddd;gap:1px;border-radius:12px;overflow:hidden}.xh-feature-grid article{background:#fff;padding:29px;min-height:205px}.xh-feature-grid article>i{font:700 11px monospace;color:#999;font-style:normal}.xh-feature-grid h3{font-size:17px;margin:27px 0 7px}.xh-feature-grid p{color:#777;margin:0}.xh-security-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.xh-process,.xh-code{background:#fff;border:1px solid #ddd;border-radius:12px;overflow:hidden}.xh-process>div{display:flex;gap:20px;padding:20px 24px;border-bottom:1px solid #eee}.xh-process>div:last-child{border:0}.xh-process b{font:700 12px monospace;color:#999}.xh-process h3{margin:0;font-size:15px}.xh-process p{color:#777;margin:3px 0 0}.xh-code{background:#111;color:#ddd}.xh-code-head{height:50px;border-bottom:1px solid #333;display:flex;align-items:center;padding:0 20px;gap:6px}.xh-code-head span{width:8px;height:8px;border-radius:50%;background:#555}.xh-code-head b{margin-left:auto;font:500 11px monospace}.xh-code pre{margin:0;padding:25px;overflow:auto;line-height:1.8;color:#ddd}.xh-code ul{list-style:none;padding:0;margin:0;border-top:1px solid #333}.xh-code li{display:flex;justify-content:space-between;padding:12px 20px;border-bottom:1px solid #222;font:12px monospace}.xh-code li b{color:#8bda9e}.xh-table-wrap{border:1px solid #ddd;border-radius:12px;overflow:auto;background:#fff}.xh-table-wrap table{width:100%;border-collapse:collapse}.xh-table-wrap th,.xh-table-wrap td{text-align:left;padding:17px 22px;border-bottom:1px solid #eee}.xh-table-wrap th{font-size:11px;color:#777;background:#f7f7f7}.xh-table-wrap td:nth-child(2){font-weight:700}.xh-table-wrap td:nth-child(3){color:#888}.xh-cta{margin-top:20px;margin-bottom:80px;background:#111;color:#fff;border-radius:18px;padding:42px 46px;display:flex;align-items:center;justify-content:space-between}.xh-cta h2{font-size:30px;margin:5px 0}.xh-cta p{margin:0;color:#aaa}.xh-cta>div:last-child{display:flex;gap:8px}.xh-btn.white{background:#fff;color:#111;border-color:#fff}.xh-btn.outline{color:#fff;border-color:#555}.xh-footer{border-top:1px solid #ddd;background:#fff;padding:35px 0}.xh-footer>.xh-wrap{display:flex;align-items:center;justify-content:space-between}.xh-footer p{color:#999;font-size:12px}.xh-footer>div>div:last-child{display:flex;gap:18px;font-size:12px}.xh-reveal{opacity:0;transform:translateY(15px);transition:opacity .55s,transform .55s}.xh-reveal.in{opacity:1;transform:none}@media(max-width:850px){.xh-hero-grid,.xh-security-grid{grid-template-columns:1fr}.xh-hero{padding-top:115px}.xh-feature-grid{grid-template-columns:1fr 1fr}.xh-menu-btn{display:block}.xh-menu{position:absolute;top:58px;left:0;right:0;background:#fff;border:1px solid #ddd;border-radius:10px;padding:8px;display:none;box-shadow:0 15px 35px #0002}.menu-open .xh-menu{display:grid}.xh-menu .xh-login{margin:0}.xh-menu a{padding:11px 13px}.xh-hero-side{max-width:600px}}@media(max-width:600px){.xh-wrap{width:min(100% - 30px,1152px)}.xh-hero{padding:102px 0 58px}.xh-hero-grid{gap:40px}.xh-hero h1{font-size:38px;letter-spacing:-1.2px}.xh-lead{font-size:14px}.xh-actions{display:grid}.xh-metrics{gap:0}.xh-metrics div+div{padding-left:10px}.xh-metrics div{padding-right:8px}.xh-metrics b{font-size:11px}.xh-security-card{padding:22px 19px}.xh-section{padding:65px 0}.xh-section-head h2{font-size:28px}.xh-feature-grid{grid-template-columns:1fr}.xh-feature-grid article{min-height:0}.xh-cta{width:calc(100% - 30px);padding:29px 23px;display:block;margin-bottom:55px}.xh-cta h2{font-size:25px}.xh-cta>div:last-child{display:grid;margin-top:25px}.xh-footer>.xh-wrap{align-items:flex-start;gap:22px;flex-direction:column}.xh-footer p{margin:0}.xh-table-wrap th,.xh-table-wrap td{padding:14px;white-space:nowrap}}@media(prefers-reduced-motion:reduce){.xh-reveal{opacity:1;transform:none;transition:none}}