:root{--bg: #f7f9fc;--panel: #fff;--navy: #101d33;--text: #17243a;--muted: #71809a;--line: #e4eaf2;--blue: #1685f8;--blue2: #086de0;--editor: #101b2c;--shadow: 0 10px 35px rgba(21, 43, 74, .08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button{font:inherit;cursor:pointer}.topbar{height:86px;background:var(--navy);color:#fff;display:flex;align-items:center;padding:0 5%;gap:40px}.brand{display:flex;align-items:center;gap:12px;min-width:310px}.brand-mark{width:50px;height:58px;border:2px solid #fff;border-radius:9px;display:grid;place-items:center;color:#19a0ff;font-weight:800;font-size:20px;position:relative}.brand-mark:after{content:"";position:absolute;right:-8px;bottom:-7px;width:27px;height:27px;border-radius:50%;background:#1685f8;border:3px solid #fff}.brand-name{font-size:31px;font-weight:800;letter-spacing:-1.5px}.brand-name span{color:#1685f8}.brand-subtitle{font-size:12px;color:#aab9cf;margin-top:-3px}nav{display:flex;gap:34px;flex:1;justify-content:center}nav a{color:#b7c4d7;text-decoration:none;font-size:14px;padding:30px 0}nav a.active{color:#1590ff;border-bottom:2px solid #1590ff}.top-actions{display:flex;align-items:center;gap:14px}.icon-btn{background:none;border:0;color:#dbe5f3;font-size:23px}.bookmark-btn{border:1px solid #8190a7;background:transparent;color:#fff;border-radius:8px;padding:10px 16px}.page{max-width:1380px;margin:auto;padding:42px 30px 60px}.intro{display:flex;justify-content:space-between;align-items:center;gap:40px;margin-bottom:32px}.intro h1{font-size:36px;margin:0 0 10px;letter-spacing:-1px}.intro p{max-width:620px;color:var(--muted);font-size:17px;line-height:1.55;margin:0}.features{display:flex;gap:0}.features>div{display:grid;grid-template-columns:44px 1fr;column-gap:12px;min-width:175px;padding:0 28px;border-left:1px solid var(--line)}.features b{grid-row:span 2;color:var(--blue);font-size:25px}.features strong{font-size:14px}.features span{font-size:12px;color:var(--muted);margin-top:2px}.workspace{display:grid;gap:12px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:9px;overflow:hidden;box-shadow:var(--shadow)}.panel-head{height:58px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:0 12px}.tabs{display:flex;gap:6px}.tab,.viewer-tabs button{border:0;background:transparent;padding:10px 14px;color:var(--muted);border-radius:7px}.tab.active,.viewer-tabs button.active{background:#edf6ff;color:var(--blue);font-weight:700}.panel-actions{display:flex;gap:8px}.secondary,.primary{border-radius:7px;padding:9px 14px;border:1px solid var(--line);background:#fff}.primary{background:var(--blue);border-color:var(--blue);color:#fff}.editor-wrap{height:520px;background:var(--editor);padding:18px}#jsonInput{width:100%;height:100%;resize:none;border:0;outline:0;background:transparent;color:#dce7f5;font:14px/1.7 SFMono-Regular,Consolas,monospace;tab-size:2}.editor-footer{display:flex;justify-content:space-between;padding:8px 14px;color:var(--muted);font-size:11px}.viewer-tabs{height:50px;border-bottom:1px solid var(--line);display:flex;align-items:end;padding-left:8px}.viewer-tabs button{border-radius:0;border-bottom:2px solid transparent}.viewer-tabs button.active{border-bottom-color:var(--blue)}.tree{height:570px;overflow:auto;padding:18px 18px 24px;font:13px/1.9 SFMono-Regular,Consolas,monospace}.node{position:relative;margin-left:18px}.node.root{margin-left:0}.node-row{display:flex;align-items:center;gap:7px;min-height:25px}.toggle{width:15px;color:#70809b;cursor:pointer}.key{color:#17243a}.type-object{color:#1685f8}.type-array{color:#8d36e8}.value-string{color:#4b8f36}.value-number{color:#df7920}.value-bool{color:#138d72}.value-null{color:#9aa5b5}.children.collapsed{display:none}.children{border-left:1px solid #dce3ec;margin-left:7px}.examples-panel{padding:18px 12px;background:#f8fafc}.examples-title{font-weight:800;font-size:16px;padding:2px 12px 14px}.example-card{display:block;width:100%;text-align:left;border:1px solid var(--line);background:#fff;border-radius:9px;padding:14px 38px 14px 14px;margin-bottom:9px;position:relative}.example-card strong,.example-card span{display:block}.example-card strong{font-size:14px}.example-card span{font-size:11px;color:var(--muted);margin-top:4px}.example-card i{position:absolute;right:13px;top:21px;color:#71809a;font-style:normal;font-size:22px}.info{margin-top:28px;background:#edf6ff;border:1px solid #dceaf9;border-radius:10px;padding:25px 30px;display:flex;align-items:center;gap:18px}.info-logo{width:48px;height:48px;border-radius:10px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:25px}.info h2{font-size:18px;margin:0 0 5px}.info p{font-size:12px;color:var(--muted);margin:0}.info-items{margin-left:auto;display:flex;gap:25px;color:#60718a;font-size:12px}.dark{--bg: #0b1220;--panel: #111c2d;--text: #e8eef8;--muted: #91a1ba;--line: #27364d }.dark .example-card,.dark .secondary{background:#172337;color:#e8eef8}.dark .key{color:#dbe5f3}.dark .info{background:#10223b}@media(max-width:1100px){.workspace{grid-template-columns:1fr 1fr}.examples-panel{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.examples-title{grid-column:1/-1}.example-card{margin:0}.intro{display:block}.features{margin-top:25px}.info-items{display:none}}@media(max-width:760px){.topbar{height:auto;padding:15px 20px;flex-wrap:wrap}.brand{min-width:auto}nav{order:3;width:100%;justify-content:flex-start;overflow:auto}.top-actions{margin-left:auto}.bookmark-btn{display:none}.page{padding:25px 14px}.workspace{grid-template-columns:1fr}.examples-panel{grid-column:auto;display:block}.features{overflow:auto}.features>div{min-width:160px;padding:0 15px}.intro h1{font-size:29px}.editor-wrap{height:400px}.viewer-panel .tree{height:430px}}