/* Yutian Security access shell. No external fonts or trackers. */
:root{color-scheme:light;--bg:#fff;--surface:#f4f4f6;--surface-raised:#fafafb;--line:#dcdce1;--ink:#17171c;--muted:#6c6c75;--quiet:#6c6c75;--accent:#ee4931;--accent-action:#d6331d;--accent-text:#d6331d;--accent-ink:#fff;--mono:Consolas,"Cascadia Mono",monospace;--sans:"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.7 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}svg{display:block}a,button{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}[hidden]{display:none!important}a:focus-visible,button:focus-visible{outline:2px solid #ee4931;outline-offset:5px}::selection{background:#ffd0c5;color:#17171c}.shell{width:min(1180px,calc(100% - 80px));margin-inline:auto}.mono{font-family:var(--mono)}.accent{color:var(--accent)}.skip-link{position:fixed;top:10px;left:20px;background:var(--accent-action);color:var(--accent-ink);padding:10px 16px;z-index:100;transform:translateY(-160%)}.skip-link:focus{transform:translateY(0)}
.site-header{height:88px;border-bottom:1px solid var(--line);background:var(--bg)}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:35px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand-mark{display:block;width:32px;height:36px;flex-shrink:0;color:var(--accent);background:currentColor;-webkit-mask:url("/brand-mark.svg") center/contain no-repeat;mask:url("/brand-mark.svg") center/contain no-repeat}.brand-type{font-size:20px;font-weight:600;letter-spacing:2px;line-height:1.15}.brand-type>span{display:block;color:var(--quiet);font:9px/1.5 var(--mono);letter-spacing:1.4px;margin-top:5px}.site-nav{display:flex;gap:32px;margin-left:auto;margin-right:28px;color:var(--muted);font-size:13px}.site-nav a:hover{color:var(--ink)}.button{display:inline-flex;justify-content:center;align-items:center;gap:30px;min-height:48px;padding:10px 21px;border:1px solid transparent;font-size:14px;font-weight:600;line-height:1.5;transition:background .15s,border-color .15s,color .15s}.button span[aria-hidden]{font-size:19px;font-weight:400;line-height:1}.button-small{font-size:12px;min-height:38px;padding:8px 14px;gap:25px}.button-primary{background:var(--accent-action);color:var(--accent-ink);border-color:var(--accent-action)}.button-primary:hover{background:#d6331d;border-color:#d6331d;filter:brightness(.94)}.button-outline{border-color:#dcdce1;background:transparent;color:var(--ink)}.button-outline:hover{border-color:#ee4931;background:#fff5f2}.text-link{display:inline-flex;align-items:center;gap:18px;font-size:13px;color:var(--ink)}.text-link:hover{color:var(--accent-text)}.text-link span[aria-hidden]{font-size:19px}.eyebrow{font:11px/1.5 var(--mono);letter-spacing:1.7px;color:var(--accent-text);display:flex;align-items:center;gap:9px}.signal-dot{display:inline-block;width:5px;height:5px;flex-shrink:0;border-radius:50%;background:var(--accent)}
.hero{display:grid;grid-template-columns:1.08fr 1fr;gap:65px;padding-top:85px;padding-bottom:86px;align-items:center}.hero h1{font-size:57px;line-height:1.25;letter-spacing:-1.8px;font-weight:550;margin:24px 0 25px}.hero-description{color:var(--muted);font-size:16px;line-height:1.95;margin:0}.hero-actions{display:flex;align-items:center;gap:30px;margin-top:34px}.release-note{display:flex;gap:13px;align-items:center;margin-top:34px;color:var(--quiet);font-size:10px;flex-wrap:wrap}.release-label{font:9px/1.6 var(--mono);letter-spacing:.9px;border:1px solid var(--line);padding:3px 7px;color:var(--muted)}.workflow-preview{background:var(--surface);border:1px solid #dcdce1;box-shadow:0 20px 75px #00000008;position:relative}.workflow-preview:before{position:absolute;top:-1px;left:-1px;height:2px;width:72px;background:var(--accent);content:""}.preview-top{display:flex;align-items:center;justify-content:space-between;padding:18px 21px;border-bottom:1px solid var(--line);color:var(--quiet);font-size:10px;letter-spacing:.6px}.subtle-tag{font-size:9px;border:1px solid var(--line);padding:2px 6px;letter-spacing:0}.preview-request{padding:24px 23px;display:flex;align-items:flex-start;gap:13px;border-bottom:1px solid var(--line)}.prompt-symbol{color:var(--accent);font:20px/1.5 var(--mono);margin-top:12px}.small-label{font-size:10px;color:var(--quiet);letter-spacing:.7px}.preview-request p{font-size:14px;margin:5px 0 0}.preview-body{padding:8px 22px}.preview-step{display:flex;align-items:center;gap:16px;padding:18px 0;position:relative}.preview-step+.preview-step{border-top:1px solid #dcdce1}.step-index{font:10px/1.5 var(--mono);color:var(--quiet)}.preview-step strong{font-size:12px;font-weight:500}.preview-step p{font-size:10px;color:var(--quiet);margin:3px 0 0}.step-word{font:9px var(--mono);color:#6c6c75;letter-spacing:.5px;margin-left:auto}.preview-step-emphasis strong,.preview-step-emphasis .step-index{color:var(--accent-text)}.line-icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}.preview-step .line-icon{color:var(--accent);width:17px;height:17px;margin-left:auto}.preview-bottom{display:flex;align-items:center;gap:9px;background:#fff5f2;padding:13px 22px;font-size:9px;color:#8e372b;border-top:1px solid #efd2cc}.preview-bottom .signal-dot{width:4px;height:4px}
.principle-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.principles{display:grid;grid-template-columns:repeat(4,1fr);padding-block:22px;font-size:12px;color:#6c6c75;letter-spacing:1px}.principles span{display:flex;align-items:center;gap:12px}.principles span:before{width:14px;height:1px;background:#ee4931;content:""}.principles span:not(:first-child){justify-content:center}.principles span:last-child{justify-content:flex-end}.section{padding-top:90px;padding-bottom:90px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:45px}.section h2{font-size:34px;line-height:1.45;font-weight:500;letter-spacing:-.7px;margin:17px 0 0}.section-heading>p{font-size:12px;line-height:2;color:var(--muted);margin:0 0 4px}.capability-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;border-top:1px solid var(--line)}.capability{padding:30px 0 0;display:flex;flex-direction:column;align-items:flex-start}.capability-symbol{font:23px/1.2 var(--mono);height:30px;color:var(--accent)}.capability-icon{width:27px;height:27px;color:var(--accent);margin-bottom:3px}.capability h3{font-size:17px;font-weight:500;margin:23px 0 10px}.capability p{font-size:12px;line-height:1.95;color:var(--muted);margin:0;max-width:95%}.capability-foot{font-size:8px;letter-spacing:.8px;color:var(--quiet);border-top:1px solid #dcdce1;display:block;width:100%;padding-top:20px;margin-top:27px}.workflow-section{background:#f4f4f6;border-top:1px solid #dcdce1;border-bottom:1px solid #dcdce1}.flow-list{list-style:none;margin:0;padding:0;border-top:1px solid #dcdce1}.flow-list li{display:flex;align-items:center;gap:36px;min-height:91px;border-bottom:1px solid var(--line);padding:18px 10px}.flow-number{font:12px var(--mono);color:#6c6c75;width:32px;flex-shrink:0}.flow-list h3{font-size:14px;font-weight:500;margin:0 0 4px}.flow-list p{font-size:11px;color:var(--quiet);margin:0}.flow-state{margin-left:auto;color:var(--muted);font-size:10px;letter-spacing:.7px;padding:4px 10px;border:1px solid #dcdce1;min-width:88px;text-align:center}.flow-state-accent{border-color:#e8b6aa;color:var(--accent-text);background:#fff5f2}.boundary-section{display:grid;grid-template-columns:1fr 1.25fr;gap:90px}.boundary-copy>p{color:var(--muted);font-size:12px;line-height:2;margin:22px 0}.boundary-copy .text-link{margin-top:8px}.boundary-list{margin:0}.boundary-list>div{border-top:1px solid var(--line);padding:23px 0;display:grid;grid-template-columns:164px 1fr;gap:21px}.boundary-list>div:last-child{border-bottom:1px solid var(--line)}.boundary-list dt{font-size:12px;display:flex;align-items:flex-start;gap:10px}.boundary-marker{color:var(--accent-text);font:14px/1.7 var(--mono)}.boundary-neutral{color:#6c6c75}.boundary-list dd{margin:0;color:var(--quiet);font-size:11px;line-height:1.9}.closing{border-top:1px solid #dcdce1;border-bottom:1px solid var(--line);padding-block:47px;display:flex;justify-content:space-between;align-items:center;gap:30px}.closing h2{font-weight:500;font-size:27px;line-height:1.5;margin:12px 0 8px}.closing p{color:var(--quiet);font-size:12px;margin:0}.site-footer{display:flex;align-items:center;gap:25px;padding-top:30px;padding-bottom:35px;font-size:10px;color:var(--quiet)}.footer-name{font-size:13px;letter-spacing:2px;color:var(--muted)}.footer-name>span{font-size:9px;letter-spacing:1px;margin-left:7px;color:var(--quiet)}.site-footer p{margin:0}.footer-status{margin-left:auto;display:flex;gap:8px;align-items:center;font-size:9px}.site-footer>a{font-size:9px;margin-left:15px}.site-footer>a:hover{color:var(--accent)}
.login-page{min-height:100vh;display:flex;flex-direction:column}.login-page .site-header{border:0}.back-link{font-size:11px;color:var(--muted)}.login-layout{flex:1;display:grid;grid-template-columns:1fr 465px;gap:110px;align-items:center;padding-block:65px 80px}.login-intro h1{font-size:54px;line-height:1.3;letter-spacing:-1.3px;font-weight:500;margin:25px 0}.login-intro>p{color:var(--muted);font-size:14px;line-height:2;margin:0}.login-principles{display:flex;gap:28px;margin-top:45px;padding-top:25px;border-top:1px solid var(--line)}.login-principles>div{display:flex;align-items:center;gap:9px;font-size:11px;color:var(--muted)}.login-principles .mono{font-size:9px;color:var(--accent-text)}.login-environment{display:flex;align-items:center;gap:10px;font-size:10px;color:var(--quiet);margin-top:40px}.access-panel{border:1px solid #dcdce1;background:var(--surface)}.access-panel-top{padding:19px 25px;border-bottom:1px solid var(--line);display:flex;gap:11px;align-items:center;color:var(--quiet);font-size:10px;letter-spacing:1px}.access-panel-top .line-icon{color:var(--accent);width:17px;height:17px}.access-panel-body{padding:29px 30px 25px}.access-panel h2{font-size:23px;font-weight:500;line-height:1.5;margin:10px 0 16px;letter-spacing:-.3px}.access-description{font-size:12px;line-height:1.95;color:var(--muted);margin:0}.session-message{display:flex;align-items:flex-start;gap:10px;border:1px solid #dcdce1;padding:12px 13px;margin-top:24px;background:#fafafb;color:#6c6c75}.status-mark{display:inline-flex;width:13px;height:13px;flex-shrink:0;justify-content:center;align-items:center;border:1px solid #6c6c75;border-radius:50%;font:9px var(--mono);margin-top:3px}.session-message p{font-size:10px;line-height:1.8;margin:0}.session-message[data-state=error]{color:#a32e25;border-color:#e2b7b0;background:#fff3f0}.session-message[data-state=success]{color:#22674f;border-color:#a7c8b8;background:#f1f8f4}.access-button{width:100%;min-height:45px;font-size:12px;margin-top:22px;justify-content:space-between;padding-inline:16px}.access-divider{display:flex;align-items:center;gap:14px;color:var(--quiet);font-size:9px;margin:25px 0 0}.access-divider:before,.access-divider:after{height:1px;background:var(--line);flex:1;content:""}.access-divider+.access-button{margin-top:18px}.demo-explainer{font-size:9px;line-height:1.9;color:var(--quiet);margin:13px 0 0;text-align:center}.access-panel-bottom{border-top:1px solid var(--line);padding:14px 24px;display:flex;align-items:center;gap:9px;color:var(--quiet);font-size:9px}.access-panel-bottom .signal-dot{width:4px;height:4px}.verified-identity{padding:15px 0 0}.verified-identity strong{display:block;font-size:13px;margin-top:3px;font-weight:500;overflow-wrap:anywhere}.login-footer{display:flex;gap:20px;align-items:center;border-top:1px solid var(--line);padding-block:24px;font-size:9px;color:var(--quiet)}.login-footer>.mono{font-size:10px;letter-spacing:1px;color:var(--muted)}.login-footer>a{margin-left:auto}.login-footer>a:hover{color:var(--accent)}
@media(min-width:1600px){.hero{padding-top:100px;padding-bottom:100px}.login-layout{padding-block:90px 110px}}@media(max-width:1100px){.shell{width:calc(100% - 56px)}.hero{gap:35px}.hero h1{font-size:49px}.hero-actions{gap:20px}.hero-actions .button{gap:20px}.release-note{font-size:9px;gap:8px}.site-nav{gap:22px;margin-right:8px}.boundary-section{gap:50px}.boundary-list>div{grid-template-columns:142px 1fr;gap:15px}.login-layout{gap:65px;grid-template-columns:1fr 430px}.login-intro h1{font-size:47px}.login-principles{gap:18px}.login-principles>div{gap:6px}}
@media(max-width:850px){.hero{grid-template-columns:1fr 1fr;gap:28px;padding-block:60px}.hero h1{font-size:40px;letter-spacing:-1px}.hero-description{font-size:13px}.eyebrow{font-size:9px;letter-spacing:1px}.hero-actions{flex-direction:column;align-items:flex-start;gap:19px}.hero-actions .button{min-height:44px;font-size:12px}.release-note{margin-top:26px}.preview-top{padding:16px;font-size:8px}.preview-request{padding:20px 16px;gap:10px}.preview-request p{font-size:11px}.preview-body{padding-inline:16px}.preview-step{gap:10px;padding:16px 0}.preview-step p{font-size:9px}.preview-step strong{font-size:11px}.step-word{font-size:8px}.preview-bottom{font-size:8px;padding:12px 16px}.site-nav{font-size:11px;gap:18px}.header-inner{gap:18px}.brand-type{font-size:18px}.brand-mark{width:26px}.button-small{font-size:10px;gap:15px}.section{padding-block:65px}.section h2{font-size:28px}.section-heading>p{font-size:10px}.capability-grid{gap:24px}.capability h3{font-size:14px}.capability p{font-size:11px}.capability-foot{font-size:7px;letter-spacing:.2px}.boundary-section{gap:40px;grid-template-columns:1fr 1.1fr}.boundary-list>div{grid-template-columns:1fr;gap:9px;padding-block:20px}.boundary-list dd{padding-left:22px}.closing h2{font-size:24px}.closing>.button{font-size:12px;gap:20px}.site-footer{flex-wrap:wrap;gap:14px}.footer-status{margin-left:0}.site-footer>a{margin-left:auto}.login-layout{gap:40px;grid-template-columns:1fr 390px}.login-intro h1{font-size:40px}.login-intro>p{font-size:12px}.login-principles{flex-direction:column;gap:13px;margin-top:30px}.login-environment{margin-top:28px}.access-panel-body{padding:26px}.access-panel h2{font-size:21px}}
@media(max-width:650px){.shell{width:calc(100% - 40px)}.site-header{height:74px}.site-nav{display:none}.header-inner{gap:15px}.brand-mark{height:29px;width:25px}.brand-type{font-size:17px;letter-spacing:1.5px}.brand-type>span{font-size:8px;letter-spacing:1px;margin-top:3px}.button-small{min-height:34px;font-size:10px;gap:16px;padding:7px 10px}.hero{grid-template-columns:1fr;gap:42px;padding-block:48px 42px}.hero h1{font-size:43px;line-height:1.3;margin-block:20px}.hero-description{font-size:13px;line-height:1.9}.hero-actions{flex-direction:row;align-items:center;gap:23px;margin-top:26px}.hero-actions .button{font-size:12px}.hero-actions .text-link{font-size:11px;gap:12px}.release-note{margin-top:25px}.workflow-preview{max-width:100%}.preview-top{font-size:9px;padding:15px 18px}.preview-request{padding:21px 18px}.preview-request p{font-size:12px}.preview-body{padding-inline:18px}.preview-step{padding-block:16px;gap:15px}.preview-step strong{font-size:12px}.preview-step p{font-size:10px}.step-word{font-size:9px}.preview-bottom{padding:13px 18px;font-size:9px}.principles{grid-template-columns:1fr 1fr;gap:16px;font-size:10px;padding-block:20px}.principles span:not(:first-child){justify-content:flex-start}.principles span:nth-child(even){justify-content:flex-end}.section{padding-block:52px}.section-heading{display:block;margin-bottom:30px}.section h2{font-size:29px;margin-top:13px;line-height:1.5}.section-heading>p{font-size:11px;margin-top:19px;line-height:1.9}.capability-grid{grid-template-columns:1fr;gap:0}.capability{padding:25px 0;border-bottom:1px solid var(--line)}.capability h3{font-size:16px;margin-top:20px}.capability p{font-size:12px;max-width:100%}.capability-foot{font-size:8px;padding-top:0;border:0;margin-top:19px}.flow-list li{gap:16px;padding:18px 0;align-items:flex-start;flex-wrap:wrap}.flow-number{width:24px;padding-top:4px}.flow-list li>div{flex:1;min-width:0}.flow-list h3{font-size:14px}.flow-list p{font-size:10px;max-width:100%;line-height:1.8}.flow-state{font-size:8px;min-width:70px;padding:3px 6px;margin-top:3px}.boundary-section{grid-template-columns:1fr;gap:32px}.boundary-copy>p{margin-block:20px;font-size:12px}.boundary-list>div{grid-template-columns:1fr;gap:8px}.boundary-list dt{font-size:13px}.boundary-list dd{font-size:11px}.closing{padding-block:32px;display:block}.closing h2{font-size:24px;margin-top:12px}.closing p{font-size:11px;line-height:1.9}.closing>.button{margin-top:23px;min-height:44px;font-size:12px;gap:32px}.site-footer{padding-block:27px;font-size:9px;gap:10px 20px}.site-footer>p{display:none}.footer-name{font-size:12px}.footer-status{margin-left:auto;font-size:8px}.site-footer>a{display:block;width:100%;margin:3px 0 0;font-size:9px}.login-page .site-header{border-bottom:1px solid var(--line)}.login-layout{grid-template-columns:1fr;gap:35px;padding-block:39px 45px}.login-intro h1{font-size:36px;line-height:1.35;margin:18px 0}.login-intro>p{font-size:12px}.login-principles{flex-direction:row;gap:20px;margin-top:24px;padding-top:20px}.login-principles>div{font-size:10px}.login-environment{margin-top:20px;font-size:9px}.access-panel-top{padding:17px 22px;font-size:9px}.access-panel-body{padding:25px 22px}.access-panel h2{font-size:22px}.access-description{font-size:12px}.session-message p{font-size:10px}.access-panel-bottom{padding:14px 21px;font-size:8px}.login-footer{gap:14px;padding-block:21px;font-size:8px}.login-footer>.mono{font-size:9px}.back-link{font-size:10px;gap:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

.auth-form{margin-top:22px}.auth-form label{display:block;margin:14px 0 6px;color:var(--muted);font-size:12px}.auth-form input{width:100%;min-height:42px;background:var(--bg);border:1px solid var(--line);color:var(--ink);padding:10px 12px;font:14px var(--sans)}.auth-form input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}