:root{--ink:#151a17;--ink-2:#242c27;--paper:#f6f5ef;--cream:#eeeae1;--white:#fffefa;--green:#82ba91;--green-dark:#356d4d;--lavender:#e9e5f0;--purple:#4b425d;--muted:#69736b;--line:#d2d8ce;--serif:Georgia,'Times New Roman',serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;-webkit-font-smoothing:antialiased}
button,select{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible+.switch{outline:2px solid var(--green-dark);outline-offset:3px}
.site-header{height:76px;padding:0 clamp(22px,4vw,68px);display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:var(--white);border-bottom:1px solid #435147}
.brand{display:flex;align-items:center;line-height:1}
.brand strong{display:block;font-size:22px;letter-spacing:-.075em;font-weight:850}
.brand small{display:block;margin-top:5px;color:var(--green);font-size:8px;letter-spacing:.18em;font-weight:800}
.header-right{display:flex;align-items:center;gap:29px}
.partner{color:#aebbb0;font-size:12px;letter-spacing:.015em}
.partner strong{color:var(--white);font-family:var(--serif);font-size:20px;font-weight:400;letter-spacing:-.055em;margin-left:5px}
.header-link{background:var(--green);color:var(--ink);padding:13px 17px;border-radius:2px;font-size:12px;font-weight:800;transition:background .2s}
.header-link:hover{background:#a4d7b0}
.header-link span{margin-left:20px}
.hero{background:var(--ink);color:var(--white);padding:30px clamp(22px,4vw,68px) 0;min-height:590px;display:flex;flex-direction:column;position:relative;overflow:hidden}
.hero:before{content:'';position:absolute;width:510px;height:510px;right:-130px;top:20px;border:1px solid #42654b;border-radius:50%;opacity:.6;box-shadow:0 0 0 100px #162219,0 0 0 101px #35583d;pointer-events:none}
.hero-top,.demo-tag,.hero-main,.route,.section-heading,.canvas-toolbar,.canvas-bottom,.control-head,.policy-head,.toggle-row,.run-button,.step-button,.trace-heading,footer{display:flex;justify-content:space-between;align-items:center}
.eyebrow{font-size:10px;font-weight:800;letter-spacing:.16em}
.hero-top{position:relative;z-index:1;gap:16px;color:var(--green)}
.demo-tag{gap:9px;color:#c6d5c8;font-size:10px;letter-spacing:.12em;font-weight:700}
.demo-tag i,.canvas-toolbar i{display:block;width:7px;height:7px;background:var(--green);border-radius:50%}
.hero-main{position:relative;z-index:1;flex:1;align-items:flex-end;gap:24px;padding:72px 0 58px}
.hero h1{max-width:1180px;margin:0;font-size:clamp(64px,8.7vw,142px);line-height:.9;letter-spacing:-.085em;font-weight:800}
.hero h1 em{font-style:normal;color:var(--green)}
.hero-main p{max-width:620px;margin:35px 0 0;color:#c9d6ca;font-size:clamp(18px,1.7vw,23px);line-height:1.4;letter-spacing:-.025em}
.hero-arrow{display:grid;place-items:center;flex:none;width:70px;height:70px;border:1px solid var(--green);border-radius:50%;color:var(--green);font-size:30px;transition:background .2s,transform .2s}
.hero-arrow:hover{background:#2b4934;transform:translate(3px,3px)}
.route{position:relative;z-index:1;gap:18px;min-height:104px;border-top:1px solid #536157}
.route>div{flex:1;display:grid;grid-template-columns:29px 1fr;column-gap:10px;align-items:center}
.route span{color:var(--green);font-size:11px;font-weight:800}
.route strong{font-size:16px;letter-spacing:-.035em}
.route small{grid-column:2;color:#a9b8aa;margin-top:5px;font-size:9px;letter-spacing:.12em;font-weight:700}
.route b{color:var(--green);font-size:23px;font-weight:400}
.demo{padding:88px clamp(22px,4vw,68px) 68px;background:var(--paper)}
.section-heading{align-items:flex-end;gap:45px;margin-bottom:28px}
.section-heading .eyebrow{color:var(--green-dark)}
.section-heading h2{font:400 clamp(55px,6.2vw,96px)/.95 var(--serif);letter-spacing:-.065em;margin:17px 0 0;color:var(--ink)}
.section-heading p{max-width:320px;margin:0 0 6px;color:#59625b;font-size:15px;line-height:1.5}
.demo-layout{display:grid;grid-template-columns:minmax(0,1.85fr) minmax(310px,.78fr);gap:12px}
.canvas-panel{height:510px;position:relative;overflow:hidden;border:1px solid #d5d0df;background:var(--lavender)}
.canvas-panel:before{content:'';position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(#6b617b13 1px,transparent 1px),linear-gradient(90deg,#6b617b13 1px,transparent 1px);background-size:35px 35px;mask-image:radial-gradient(ellipse,#000 22%,transparent 83%)}
.canvas-toolbar,.canvas-bottom{position:absolute;left:22px;right:22px;z-index:3;color:var(--purple);font-size:10px;font-weight:800;letter-spacing:.105em}
.canvas-toolbar{top:19px}
.canvas-toolbar>span{display:flex;gap:8px;align-items:center}
.canvas-toolbar i{background:var(--green-dark)}
.canvas-toolbar button{padding:4px 0;border:0;background:none;color:var(--purple);font-size:10px;font-weight:700;text-decoration:underline;text-underline-offset:3px}
.canvas-bottom{bottom:18px}
.canvas-bottom span:last-child{color:var(--green-dark)}
#scene{position:absolute;inset:0;overflow:hidden;cursor:grab}
#scene:active{cursor:grabbing}
#scene canvas{display:block;width:100%;height:100%}
.scene-fallback{height:100%;display:flex;align-items:center;justify-content:center;gap:14px;color:var(--purple);font-size:10px;font-weight:800;letter-spacing:.11em}
.scene-fallback span{color:var(--green-dark)}
.node-label,.packet-label{position:absolute;z-index:4;pointer-events:none;white-space:nowrap;transform:translate(-50%,-50%);text-align:center}
.node-label{padding:8px 10px;background:#fffefae8;color:var(--ink);border:1px solid #cec8da;box-shadow:0 4px 13px #51496619}
.node-label strong,.node-label small{display:block}
.node-label strong{font-size:10px;letter-spacing:.06em}
.node-label small{margin-top:4px;color:#655c74;font-size:8px;letter-spacing:.1em}
.packet-label{padding:5px 8px;background:var(--green);color:var(--ink);font-size:9px;font-weight:900;letter-spacing:.07em;box-shadow:0 3px 9px #4f5b5140}
.packet-label.is-return{background:var(--white)}
.control-panel{min-height:510px;padding:26px;background:var(--white);color:var(--ink);border:1px solid #dcded5;display:flex;flex-direction:column}
.control-head{border-bottom:1px solid var(--line);padding-bottom:21px;font-size:10px;letter-spacing:.14em;font-weight:900}
.control-head span:last-child{color:#79867a}
.field{padding:23px 0;border-bottom:1px solid var(--line)}
.field>label,.policy-head{font-size:11px;font-weight:800;letter-spacing:.065em}
.select-wrap{position:relative;margin-top:12px}
.select-wrap select{appearance:none;width:100%;padding:14px 40px 14px 13px;border:1px solid #b8c3b8;border-radius:2px;background:var(--paper);color:var(--ink)}
.select-wrap>span{position:absolute;right:15px;top:9px;font-size:24px;pointer-events:none}
.field p{min-height:35px;margin:12px 0 0;color:#68736a;font-size:12px;line-height:1.45}
.policy-head span:last-child{color:var(--green-dark);font-size:9px}
.toggle-row{gap:14px;padding-top:19px;cursor:pointer;position:relative}
.toggle-row strong,.toggle-row small{display:block}
.toggle-row strong{font-size:13px}
.toggle-row small{margin-top:4px;color:#69736b;font-size:11px}
.toggle-row input{position:absolute;right:0;opacity:0}
.switch{width:36px;height:21px;flex:none;position:relative;border-radius:15px;background:#9aa59a;transition:background .2s}
.switch:after{content:'';position:absolute;top:3px;left:3px;width:15px;height:15px;border-radius:50%;background:white;transition:transform .2s}
.toggle-row input:checked+.switch{background:var(--green-dark)}
.toggle-row input:checked+.switch:after{transform:translateX(15px)}
.play-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:auto}
.run-button,.step-button{min-height:51px;padding:13px 14px;border-radius:2px;font-size:12px;font-weight:800;text-align:left}
.run-button{border:1px solid var(--ink);background:var(--ink);color:var(--white)}
.run-button:hover{background:#314b38}
.step-button{border:1px solid #8b9b8e;background:transparent;color:var(--ink)}
.step-button:hover{background:#edf4eb}
.run-button:disabled,.step-button:disabled{opacity:.58;cursor:wait}
.flow-inspector{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:28px;align-items:center;margin-top:12px;padding:28px;background:var(--lavender);color:var(--ink);border:1px solid #d5d0df}
.flow-inspector .eyebrow{color:var(--purple)}
.flow-inspector h3{margin:12px 0;font:400 clamp(24px,2.3vw,34px)/1.08 var(--serif);letter-spacing:-.045em}
.flow-inspector p{margin:0;color:#655c74;font-size:12px}
.flow-inspector pre{margin:0;min-height:90px;max-height:230px;overflow:auto;padding:18px;background:var(--white);border:1px solid #d5d0df;color:var(--ink);font-size:12px;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere}
.trace-panel{margin-top:12px;min-height:180px;padding:26px 28px;background:var(--white);border:1px solid #dcded5}
.trace-heading{align-items:flex-start;gap:15px}
.trace-heading .eyebrow{color:var(--green-dark)}
.trace-heading h3{margin:9px 0 0;font:400 28px/1.1 var(--serif);letter-spacing:-.04em}
.trace-badge{padding:8px 10px;border:1px solid #bcc8bd;color:#59665c;font-size:10px;letter-spacing:.06em;font-weight:800;white-space:nowrap}
.trace-badge.blocked{color:#8b3644;border-color:#bd7d86}
.trace-badge.success{color:var(--green-dark);border-color:var(--green-dark)}
.trace-list{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;list-style:none;margin:25px 0 0;padding:0}
.trace-list li{min-height:74px;padding:11px 3px 0;border-top:2px solid #bac7bc}
.trace-list li.active{border-color:var(--purple);background:#e9e5f055}
.trace-list li.done{border-color:var(--green-dark)}
.trace-list li.blocked{border-color:#a45c66}
.trace-list li .step-number{display:block;margin-bottom:8px;color:#6e796f;font-size:9px;letter-spacing:.12em}
.trace-list li strong{display:block;font-size:12px}
.trace-list li small{display:block;margin-top:5px;color:#68746b;font-size:10px;line-height:1.4}
.trace-list .trace-empty{grid-column:1/-1;min-height:25px;border-top:1px solid var(--line);color:#657166;font-size:13px}
.disclaimer{margin:20px 0 0;color:#5d685f;font-size:11px;line-height:1.5}
.disclaimer strong{color:var(--green-dark)}
footer{gap:20px;padding:25px clamp(22px,4vw,68px);border-top:1px solid #3d4a41;background:var(--ink);color:#b8c6b9;font-size:10px;letter-spacing:.1em}
footer span:first-child{color:var(--white);font-size:17px;font-weight:800;letter-spacing:-.055em}
footer b{margin:0 4px;color:var(--green)}
footer a{color:var(--green)}
@media(max-width:1050px){.demo-layout{grid-template-columns:1fr}.control-panel{min-height:400px}.trace-list{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:650px){.site-header{height:66px}.brand strong{font-size:18px}.partner{display:none}.header-link{font-size:10px;padding:11px}.hero{min-height:560px}.hero:before{width:300px;height:300px;right:-180px;top:110px}.hero-top{align-items:flex-start}.demo-tag{max-width:155px;line-height:1.35;text-align:right}.hero-main{display:block;padding:62px 0 39px}.hero h1{font-size:clamp(52px,12vw,78px)}.hero-main p{font-size:17px;margin-top:28px}.hero-arrow{width:54px;height:54px;font-size:24px;margin-top:28px}.route{min-height:111px;gap:6px}.route>div{display:block}.route span{display:block;margin-bottom:7px;font-size:9px}.route strong{font-size:11px}.route small{font-size:7px}.route b{font-size:16px}.demo{padding-top:68px}.section-heading{display:block}.section-heading h2{font-size:58px}.section-heading p{margin-top:16px}.canvas-panel{height:390px}.canvas-toolbar,.canvas-bottom{left:12px;right:12px;font-size:8px}.canvas-toolbar button{font-size:8px}.control-panel{min-height:415px;padding:20px}.play-actions{grid-template-columns:1fr}.flow-inspector{grid-template-columns:1fr;padding:20px;gap:18px}.trace-list{grid-template-columns:repeat(2,minmax(0,1fr))}.node-label{padding:5px 6px}.node-label strong{font-size:8px}.node-label small{font-size:6px}.packet-label{font-size:7px}footer span:nth-child(2){display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}