:root{--bg:#f5f1e9;--surface:#fffdf8;--surface-soft:#ebe5da;--ink:#222a34;--muted:#71736f;--line:#dcd5c8;--accent:#e57a24;--accent-2:#2472c8;--accent-soft:rgba(229,122,36,.12);--dark:#172331}
.hero::after{position:absolute;z-index:-1;top:70px;right:0;width:50%;height:80%;background:linear-gradient(135deg,transparent 30%,#e57a2411 30% 31%,transparent 31% 48%,#2472c811 48% 49%,transparent 49%);content:""}
.drawio-window{box-shadow:14px 16px 0 #ded5c5,0 28px 70px #30354022}.editor-shell{display:grid;min-height:520px;grid-template-columns:82px 1fr 102px}.shape-panel,.format-panel{padding:18px 11px;background:#f6f4ef;color:#687078}.shape-panel{border-right:1px solid var(--line)}.format-panel{border-left:1px solid var(--line)}.shape-panel small,.format-panel small{font:7px/1 var(--mono);letter-spacing:.12em}.shape-panel div{display:grid;margin:12px 0 22px;grid-template-columns:1fr 1fr;gap:6px}.shape-panel i{display:grid;height:28px;border:1px solid #cfd3d4;background:white;color:#53606b;place-items:center;font:normal 10px/1 var(--mono)}
.diagram-board{position:relative;overflow:hidden;background-color:#fff;background-image:linear-gradient(#e5e9eb 1px,transparent 1px),linear-gradient(90deg,#e5e9eb 1px,transparent 1px);background-size:16px 16px}.node{position:absolute;z-index:2;display:flex;width:116px;height:62px;border:2px solid #2e6db2;border-radius:5px;background:#eef6ff;box-shadow:3px 3px 0 #b7d0ec;align-items:center;justify-content:center;flex-direction:column}.node span{color:#244f7d;font:8px/1 var(--mono);font-weight:700}.node small{margin-top:7px;color:#74889d;font:7px/1 var(--mono)}.gateway{top:62px;left:50%;border-color:#e57a24;background:#fff3e6;box-shadow:3px 3px 0 #f0c69f;transform:translateX(-50%)}.service.one{top:202px;left:38px}.service.two{top:202px;right:38px}.data{bottom:58px;left:50%;border-radius:32px;background:#eef8f6;box-shadow:3px 3px 0 #acd5cc;transform:translateX(-50%)}
.edge{position:absolute;z-index:1;width:2px;background:#718296;transform-origin:top}.edge::after{position:absolute;bottom:-2px;left:-3px;width:6px;height:6px;border-right:2px solid #718296;border-bottom:2px solid #718296;content:"";transform:rotate(45deg)}.e1{top:124px;left:50%;height:97px;transform:rotate(29deg)}.e2{top:124px;left:50%;height:97px;transform:rotate(-29deg)}.e3{top:264px;left:28%;width:44%;height:100px;border-right:2px solid #718296;border-bottom:2px solid #718296;background:transparent}.diagram-note{position:absolute;right:10px;bottom:10px;padding:6px;border:1px solid #e6be97;background:#fff8ef;color:#a45d24;font:7px/1 var(--mono)}
.format-panel b{display:block;margin:18px 0 10px;color:#4c5560;font-size:9px}.format-panel label{display:flex;margin:10px 0;font-size:8px;justify-content:space-between}.format-panel label i{width:15px;height:15px;border:1px solid #afb7bd;background:#eaf3ff}.format-panel label:nth-of-type(2) i{background:#e57a24}.format-panel button{width:100%;margin-top:10px;padding:7px 2px;border:1px solid #c9cdd0;background:white;font-size:7px}
.dual-visual{display:grid;padding:15px;background:#182331;color:white;grid-template-columns:1fr 35px 1fr;align-items:center}.dual-visual div{padding:10px;border:1px solid #ffffff17;background:#ffffff08}.dual-visual span{color:#f2a66a;font:7px/1 var(--mono)}.dual-visual code{display:block;margin-top:9px;color:#c5d1de;font-size:8px;line-height:1.6}.dual-visual>b{text-align:center;color:#f2a66a}
.geometry-visual{background-color:white;background-image:linear-gradient(#e8ecee 1px,transparent 1px),linear-gradient(90deg,#e8ecee 1px,transparent 1px);background-size:14px 14px}.geometry-visual span{position:absolute;width:86px;height:48px;border:2px solid var(--accent-2);background:#e8f3ff}.geometry-visual span:first-child{top:18px;left:35px}.geometry-visual span:nth-child(2){right:35px;bottom:18px}.geometry-visual i{position:absolute;top:54%;left:36%;width:90px;height:2px;background:var(--accent)}.geometry-visual b{position:absolute;right:10px;top:9px;color:var(--muted);font:7px/1 var(--mono)}
.preserve-visual{display:flex;padding:18px;gap:8px;align-items:center}.preserve-visual span{padding:8px;border:1px solid var(--line);background:white;color:var(--muted);font:8px/1 var(--mono)}.preserve-visual .active{border-color:#eeaa73;background:#fff3e8;color:#b55f1c}.output-visual{display:grid;padding:15px;grid-template-columns:1fr 1fr;gap:7px}.output-visual b{display:grid;border:1px solid var(--line);border-radius:5px;background:white;color:#52606a;place-items:center;font:8px/1 var(--mono)}
@media(max-width:620px){.editor-shell{min-height:480px;grid-template-columns:56px 1fr}.format-panel{display:none}.shape-panel div{grid-template-columns:1fr}.node{width:88px}.service.one{left:14px}.service.two{right:14px}}