:root{
  --brand:#4eb39a;--brand-dark:#3a9b83;--brand-deep:#0e2d27;
  --accent-light:#e1f5ee;--accent-mid:#b3e6d8;
  --text:#1a2e2b;--text-muted:#5f7a74;--text-subtle:#94aaa6;
  --border-light:rgba(78,179,154,.15);--border-mid:rgba(78,179,154,.25);--border-strong:rgba(78,179,154,.4);
  --green:#16a34a;--green-d:rgba(22,163,74,.08);--green-b:rgba(22,163,74,.22);
  --blue:#2563eb;--blue-d:rgba(37,99,235,.08);
  --yellow:#d97706;--yellow-d:rgba(217,119,6,.08);
  --red:#dc2626;--red-d:rgba(220,38,38,.08);
  --purple:#7c3aed;--purple-d:rgba(124,58,237,.08);
  --bg0:#f5f9f8;--bg1:#fff;--bg3:#eaf4f1;--bg4:#e1f0ec;
  --border:rgba(78,179,154,.15);--border2:rgba(78,179,154,.3);
  --mono:'DM Mono',monospace;
  --jkey:#0e7490;--jstr:#15803d;--jnum:#9333ea;--jbool:#d97706;--jnull:#dc2626;--jpunct:#5f7a74;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{background:#f5f9f8}
.jf-page{font-family:'DM Sans',-apple-system,sans-serif;background:#f5f9f8;min-height:100vh;color:var(--text)}

/* ── HERO ── */
.ipc-hero{background:linear-gradient(145deg,#0e2d27 0%,#1a4a3d 60%,#0e3530 100%);border-bottom:1px solid rgba(78,179,154,.2);padding:2.5rem 2rem 2rem;position:relative;overflow:hidden}
.ipc-hero::before{content:'';position:absolute;top:-60px;left:50%;transform:translateX(-50%);width:700px;height:340px;background:radial-gradient(ellipse,rgba(78,179,154,.09) 0%,transparent 70%);pointer-events:none}
.ipc-hero::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(78,179,154,.4),transparent)}
.ipc-hero-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 300px;gap:2.5rem;align-items:center;position:relative;z-index:1}
.ipc-eyebrow{font-family:var(--mono);font-size:.65rem;font-weight:500;color:rgba(111,209,179,.7);letter-spacing:.14em;text-transform:uppercase;margin-bottom:.55rem;display:flex;align-items:center;gap:7px}
.ipc-eyebrow::before{content:'//';opacity:.5}
.ipc-hero h1{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:700;color:#fff;line-height:1.15;letter-spacing:-.02em;margin-bottom:.5rem}
.ipc-hero h1 em{font-style:normal;color:#6fd1b3}
.ipc-hero-desc{font-size:.875rem;color:rgba(255,255,255,.55);line-height:1.8;max-width:480px}
.ipc-feat-list{display:flex;flex-direction:column;gap:4px;margin-top:.9rem}
.ipc-feat{display:flex;align-items:center;gap:7px;font-family:var(--mono);font-size:.7rem;color:rgba(255,255,255,.45)}
.ipc-feat::before{content:'▸';color:#6fd1b3;font-size:8px}
.ipc-stat-panel{background:rgba(255,255,255,.07);border:1px solid rgba(78,179,154,.25);border-radius:10px;padding:1.1rem 1.2rem;display:none}
.ipc-stat-panel.show{display:block}
.isp-title{font-family:var(--mono);font-size:.6rem;color:rgba(111,209,179,.6);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.65rem}
.isp-rows{display:flex;flex-direction:column;gap:4px}
.isp-row{display:flex;justify-content:space-between;align-items:center;padding:3px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.isp-row:last-child{border-bottom:none}
.isp-k{font-family:var(--mono);font-size:.7rem;color:rgba(255,255,255,.4)}
.isp-v{font-family:var(--mono);font-size:.75rem;font-weight:500;color:#fff}
.isp-v.green{color:#6fd1b3}.isp-v.blue{color:#7eb8f4}.isp-v.yellow{color:#f9cb42}.isp-v.red{color:#f87171}

/* ── MAIN ── */
.ipc-main{max-width:1200px;margin:0 auto;padding:1.75rem 2rem}
.sec-title{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.68rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);margin-bottom:.75rem}
.sec-title::after{content:'';flex:1;height:1px;background:rgba(78,179,154,.15)}

/* ── TOOL CARD ── */
.tool-card{background:#fff;border:1px solid rgba(78,179,154,.18);border-radius:12px;margin-bottom:1.5rem;overflow:hidden;transition:box-shadow .2s}
.tool-card:hover{box-shadow:0 4px 16px rgba(0,0,0,.06)}
.tc-head{background:#f5f9f8;padding:.8rem 1.4rem;border-bottom:1px solid rgba(78,179,154,.12);display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex-wrap:wrap}
.tc-title{display:flex;align-items:center;gap:7px;font-size:.82rem;font-weight:700;color:#0e2d27}
.tc-title svg{width:14px;height:14px;stroke:#3a9b83;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tc-body{padding:1.1rem 1.4rem}

/* ── MODE TOGGLE ── */
.mode-toggle{display:flex;gap:3px;background:#eaf4f1;border:1px solid rgba(78,179,154,.2);border-radius:7px;padding:3px}
.mode-btn{font-family:var(--mono);font-size:.7rem;font-weight:500;padding:5px 14px;border-radius:5px;border:none;cursor:pointer;transition:all .15s;color:var(--text-muted);background:transparent;letter-spacing:.04em}
.mode-btn.active{background:#4eb39a;color:#fff;font-weight:700}
.mode-btn:not(.active):hover{background:rgba(78,179,154,.15);color:#3a9b83}

/* ── BUTTONS ── */
.btn-primary{background:#4eb39a;border:none;border-radius:8px;padding:8px 18px;font-family:'DM Sans',sans-serif;font-size:.8rem;font-weight:700;color:#0e2d27;cursor:pointer;transition:background .15s,transform .14s;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.btn-primary:hover{background:#3a9b83;transform:translateY(-1px)}.btn-primary:active{transform:scale(.98)}
.btn-primary svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:2.5}
.btn-secondary{background:#f5f9f8;border:1px solid rgba(78,179,154,.25);border-radius:8px;padding:7px 14px;font-family:var(--mono);font-size:.72rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all .15s;display:inline-flex;align-items:center;gap:5px;white-space:nowrap}
.btn-secondary:hover{border-color:#4eb39a;color:#3a9b83;background:#e1f5ee}
.btn-secondary svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:2}
.btn-danger{background:rgba(220,38,38,.07);border:1px solid rgba(220,38,38,.2);border-radius:8px;padding:7px 14px;font-family:var(--mono);font-size:.72rem;font-weight:600;color:#dc2626;cursor:pointer;transition:all .15s;display:inline-flex;align-items:center;gap:5px}
.btn-danger:hover{background:rgba(220,38,38,.12);border-color:rgba(220,38,38,.35)}
.btn-danger svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:2}
.btn-purple{background:rgba(124,58,237,.08);border:1px solid rgba(124,58,237,.25);border-radius:8px;padding:7px 14px;font-family:var(--mono);font-size:.72rem;font-weight:600;color:#7c3aed;cursor:pointer;transition:all .15s;display:inline-flex;align-items:center;gap:5px}
.btn-purple:hover{background:rgba(124,58,237,.14);border-color:rgba(124,58,237,.4)}
.btn-purple svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:2}

/* ── OPTIONS PANEL ── */
.options-panel{background:#f5f9f8;border:1px solid rgba(78,179,154,.15);border-radius:8px;padding:.85rem 1.1rem;margin-bottom:1rem;display:flex;align-items:flex-start;flex-wrap:wrap;gap:1rem}
.opt-group{display:flex;flex-direction:column;gap:6px}
.opt-group-title{font-family:var(--mono);font-size:.6rem;font-weight:600;color:var(--text-subtle);letter-spacing:.08em;text-transform:uppercase}
.opt-checks{display:flex;flex-wrap:wrap;gap:8px}
.opt-check{display:flex;align-items:center;gap:5px;font-family:var(--mono);font-size:.72rem;color:var(--text-muted);cursor:pointer;user-select:none;padding:4px 10px;background:#fff;border:1px solid rgba(78,179,154,.2);border-radius:6px;transition:all .13s}
.opt-check:hover{border-color:#4eb39a;color:#3a9b83;background:#e1f5ee}
.opt-check input[type="checkbox"]{accent-color:#4eb39a;width:12px;height:12px;cursor:pointer}
.opt-check input:checked+span{color:#0e2d27;font-weight:600}
.opt-select{background:#fff;border:1px solid rgba(78,179,154,.25);border-radius:6px;padding:5px 9px;font-family:var(--mono);font-size:.72rem;color:#0e2d27;outline:none;cursor:pointer;transition:border-color .15s}
.opt-select:focus{border-color:#4eb39a}
.opt-divider{width:1px;background:rgba(78,179,154,.18);align-self:stretch}

/* ── EDITOR GRID ── */
.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:1rem}
.editor-pane{display:flex;flex-direction:column;gap:6px}
.editor-label{font-family:var(--mono);font-size:.65rem;font-weight:600;color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase;display:flex;align-items:center;justify-content:space-between}
.editor-label .char-count{font-size:.62rem;color:var(--text-subtle);font-weight:400}
.json-textarea{background:#f5f9f8;border:1px solid rgba(78,179,154,.25);border-radius:8px;padding:12px 14px;font-family:var(--mono);font-size:.82rem;color:#0e2d27;resize:vertical;outline:none;width:100%;min-height:340px;line-height:1.6;tab-size:2;transition:border-color .2s,background .2s}
.json-textarea::placeholder{color:#94aaa6;font-size:.8rem;font-weight:400}
.json-textarea:focus{border-color:#4eb39a;background:#fff}
.json-textarea.valid{border-color:rgba(22,163,74,.4);background:rgba(22,163,74,.02)}
.json-textarea.invalid{border-color:rgba(220,38,38,.4);background:rgba(220,38,38,.02)}

/* ── NDJSON OUTPUT ── */
.ndjson-output-wrap{background:#f5f9f8;border:1px solid rgba(78,179,154,.25);border-radius:8px;min-height:340px;max-height:600px;overflow:auto;position:relative}
.ndjson-line-wrap{display:flex}
.ndjson-line-nums{background:#eaf4f1;border-right:1px solid rgba(78,179,154,.15);padding:12px 8px 12px 12px;font-family:var(--mono);font-size:.78rem;line-height:1.7;color:#94aaa6;text-align:right;user-select:none;white-space:pre;min-width:44px;flex-shrink:0}
.ndjson-output{padding:12px 14px;font-family:var(--mono);font-size:.82rem;line-height:1.7;white-space:pre;min-height:340px;overflow-x:auto;flex:1}
.ndjson-line{display:block;border-radius:2px;transition:background .1s}
.ndjson-line:hover{background:rgba(78,179,154,.05)}
.jk{color:var(--jkey);font-weight:500}.js{color:var(--jstr)}.jn{color:var(--jnum)}.jb{color:var(--jbool);font-weight:500}.jl{color:var(--jnull);font-weight:500}.jp{color:var(--jpunct)}
.ndjson-empty-notice{padding:2.5rem;text-align:center;font-family:var(--mono);font-size:.75rem;color:#94aaa6;display:flex;flex-direction:column;align-items:center;gap:10px}
.ndjson-empty-notice svg{width:36px;height:36px;stroke:rgba(78,179,154,.3);fill:none;stroke-width:1.5}

/* ── BANNERS ── */
.valid-banner{display:none;padding:.7rem 1rem;border-radius:8px;margin-bottom:.75rem;font-family:var(--mono);font-size:.78rem;font-weight:600;align-items:flex-start;gap:8px}
.valid-banner.show{display:flex}
.vb-ok{background:rgba(22,163,74,.08);border:1px solid rgba(22,163,74,.25);color:#16a34a}
.vb-err{background:rgba(220,38,38,.07);border:1px solid rgba(220,38,38,.25);color:#dc2626}
.vb-icon{font-size:1rem;flex-shrink:0}.vb-body{flex:1}
.vb-title{font-weight:700;margin-bottom:2px}.vb-detail{font-size:.72rem;font-weight:400;opacity:.85}

/* ── ERROR PANEL ── */
.error-panel{background:rgba(220,38,38,.04);border:1px solid rgba(220,38,38,.2);border-radius:10px;padding:1rem 1.2rem;margin-bottom:1.5rem;display:none}
.error-panel.show{display:block}
.ep-title{font-family:var(--mono);font-size:.72rem;font-weight:700;color:#dc2626;margin-bottom:.6rem}
.ep-row{display:flex;gap:8px;align-items:flex-start;margin-bottom:4px}
.ep-k{font-family:var(--mono);font-size:.7rem;color:#dc2626;font-weight:600;min-width:70px}
.ep-v{font-family:var(--mono);font-size:.7rem;color:#0e2d27}
.ep-tip{margin-top:.65rem;padding:.5rem .75rem;background:rgba(220,38,38,.06);border-radius:6px;font-family:var(--mono);font-size:.7rem;color:#5f7a74;border-left:3px solid rgba(220,38,38,.3)}
.ep-tip strong{color:#dc2626;display:block;font-size:.65rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:2px}

/* ── STATS ── */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:10px;margin-bottom:1.5rem}
.stat-card{background:#fff;border:1px solid rgba(78,179,154,.18);border-top:2.5px solid var(--sc-color,#4eb39a);border-radius:10px;padding:.85rem 1rem;transition:box-shadow .15s}
.stat-card:hover{box-shadow:0 3px 10px rgba(0,0,0,.06)}
.sc-lbl{font-family:var(--mono);font-size:.6rem;font-weight:600;color:var(--text-muted);letter-spacing:.07em;text-transform:uppercase;margin-bottom:.25rem}
.sc-val{font-family:var(--mono);font-size:1.25rem;font-weight:700;color:#0e2d27;line-height:1}
.sc-sub{font-family:var(--mono);font-size:.65rem;color:var(--text-subtle);margin-top:3px}

/* ── VIEW TABS ── */
.output-label-row{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.view-tabs{display:flex;gap:3px;align-items:center;background:#eaf4f1;border:1px solid rgba(78,179,154,.2);border-radius:7px;padding:3px}
.view-tab{font-family:var(--mono);font-size:.7rem;font-weight:500;padding:4px 13px;border-radius:5px;border:none;cursor:pointer;transition:all .15s;color:var(--text-muted);background:transparent;letter-spacing:.04em}
.view-tab.active{background:#4eb39a;color:#fff;font-weight:700}
.view-tab:not(.active):hover{background:rgba(78,179,154,.15);color:#3a9b83}

/* ── DIFF ── */
.diff-view-wrap{background:#f5f9f8;border:1px solid rgba(78,179,154,.25);border-radius:8px;min-height:340px;max-height:600px;overflow:auto}
.diff-table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:.78rem}
.diff-table td{padding:2px 14px;line-height:1.7;border:none;white-space:pre}
.diff-line-num{color:#94aaa6;text-align:right;padding-right:10px;user-select:none;width:44px;background:#eaf4f1;border-right:1px solid rgba(78,179,154,.15)}
.diff-add    .diff-content{background:rgba(22,163,74,.07);color:#15803d}
.diff-remove .diff-content{background:rgba(220,38,38,.07);color:#dc2626;opacity:.65}

/* ── TWO COL ── */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:1.5rem}
.ref-table-wrap{background:#fff;border:1px solid rgba(78,179,154,.18);border-radius:10px;overflow:hidden}
.ref-table{width:100%;border-collapse:collapse}
.ref-table th{padding:.45rem .9rem;text-align:left;font-family:var(--mono);font-size:.62rem;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--text-muted);background:#f5f9f8;border-bottom:1px solid rgba(78,179,154,.12)}
.ref-table td{padding:.4rem .9rem;font-family:var(--mono);font-size:.72rem;color:#1a2e2b;border-bottom:1px solid rgba(78,179,154,.06)}
.ref-table tr:last-child td{border-bottom:none}
.ref-table tr:hover td{background:rgba(78,179,154,.03)}
.ref-table td code{background:rgba(78,179,154,.1);border-radius:3px;padding:1px 5px;font-size:.7rem;color:#0e7490}

/* ── LINE PREVIEW ── */
.line-preview{background:#fff;border:1px solid rgba(78,179,154,.18);border-radius:10px;overflow:hidden;margin-bottom:1.5rem}
.lp-head{background:#f5f9f8;padding:.7rem 1.2rem;border-bottom:1px solid rgba(78,179,154,.12);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem}
.lp-title{font-family:var(--mono);font-size:.68rem;font-weight:600;color:#0e2d27;letter-spacing:.08em;text-transform:uppercase}
.lp-body{padding:.75rem 1.2rem;max-height:240px;overflow-y:auto}
.lp-row{display:flex;align-items:baseline;gap:10px;padding:3px 0;border-bottom:1px solid rgba(78,179,154,.05);font-family:var(--mono);font-size:.75rem}
.lp-row:last-child{border-bottom:none}
.lp-num{color:#94aaa6;min-width:28px;text-align:right;flex-shrink:0}
.lp-keys{color:var(--jkey);font-weight:500;flex:1}
.lp-size{color:var(--text-subtle);font-size:.65rem;flex-shrink:0}

/* ── SEO BLOCK ── */
.seo-block{background:#fff;border:1px solid rgba(78,179,154,.18);border-radius:10px;padding:1.75rem 2rem;margin-bottom:1.5rem}
.seo-block h2{font-size:1.15rem;font-weight:700;color:#0e2d27;margin-bottom:.5rem}
.seo-block h3{font-size:.9rem;font-weight:700;color:#0e2d27;margin:1rem 0 .3rem}
.seo-block p{font-size:.875rem;color:var(--text-muted);line-height:1.8;margin-bottom:.5rem}
.seo-block ul{margin:.4rem 0 .8rem 1.3rem}
.seo-block ul li{font-size:.875rem;color:var(--text-muted);line-height:1.8}
.faq-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:10px;margin-top:1.25rem}
.faq-card{background:#f5f9f8;border:1px solid rgba(78,179,154,.15);border-radius:10px;padding:1rem 1.1rem}
.faq-q{font-size:.875rem;font-weight:700;color:#0e2d27;margin-bottom:.3rem}
.faq-a{font-size:.82rem;color:var(--text-muted);line-height:1.7}

/* ── PRESET ── */
.preset-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.preset-lbl{font-family:var(--mono);font-size:.65rem;color:var(--text-subtle);font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.preset-btn{font-family:var(--mono);font-size:.7rem;font-weight:500;padding:3px 10px;border-radius:5px;background:transparent;border:1px solid rgba(78,179,154,.25);color:var(--text-muted);cursor:pointer;transition:all .12s}
.preset-btn:hover{border-color:#4eb39a;color:#3a9b83;background:rgba(78,179,154,.08)}

/* ── PROCESSING BAR ── */
.processing-bar{height:2px;background:rgba(78,179,154,.15);border-radius:1px;overflow:hidden;margin-bottom:.5rem;display:none}
.processing-bar.show{display:block}
.processing-fill{height:100%;width:60%;background:linear-gradient(90deg,#4eb39a,#6fd1b3);border-radius:1px;animation:procAnim 1s infinite}
@keyframes procAnim{0%{transform:translateX(-100%)}100%{transform:translateX(200%)}}

/* ── TOAST ── */
.ipc-toast{position:fixed;bottom:1.75rem;right:1.75rem;background:#0e2d27;border:1px solid rgba(78,179,154,.35);border-radius:7px;padding:.55rem 1rem;font-family:var(--mono);font-size:.75rem;color:#6fd1b3;z-index:9999;transform:translateY(50px);opacity:0;transition:all .25s;pointer-events:none}
.ipc-toast.show{transform:translateY(0);opacity:1}

/* Drag */
.drag-over .json-textarea{border-color:#4eb39a;background:rgba(78,179,154,.04);box-shadow:0 0 0 3px rgba(78,179,154,.12)}

@media(max-width:900px){.editor-grid,.ipc-hero-inner,.two-col{grid-template-columns:1fr}}
@media(max-width:768px){.ipc-main{padding:1rem}}
@media(max-width:640px){.ipc-hero{padding:2rem 1.25rem 1.75rem}.seo-block{padding:1.25rem}.stats-grid{grid-template-columns:repeat(2,1fr)}.options-panel{flex-direction:column}}

/* ── v2: large files & data-lake add-on ── */
.kmnd-card{margin-top:1.25rem}
.kmnd-card .kmsim-tabs{margin-bottom:10px}
.kmnd-pane[hidden]{display:none}
.kmnd-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px 14px;margin:10px 0}
.kmnd-grid label{display:flex;flex-direction:column;gap:4px;font-size:.8rem;font-weight:600;min-width:0}
.kmnd-wide{grid-column:1/-1}
.kmnd-inline{display:flex;gap:6px;align-items:center}
.kmnd-inline input[type=number]{width:90px}
.kmnd-checks{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.8rem;margin:4px 0 10px}
.kmnd-checks label{display:flex;gap:6px;align-items:center}
.kmnd-grow{flex:1 1 220px;min-width:0}
.kmnd-src{display:flex;gap:6px;align-items:center;font-size:.8rem;font-weight:600;flex-wrap:wrap}
.kmnd-prog{margin:10px 0}
.kmnd-bar{height:8px;border-radius:99px;background:rgba(78,179,154,.15);overflow:hidden}
.kmnd-bar span{display:block;height:100%;width:0;background:#4eb39a;transition:width .15s}
.kmnd-pre{max-height:320px;overflow:auto;white-space:pre;font-size:.72rem}
#kmndFile{max-width:100%;font-size:.8rem}
.kmnd-ftext{font-family:'DM Mono',ui-monospace,monospace;font-size:.76rem;resize:vertical}
.kmsim-btn[hidden],.kmsim-card [hidden]{display:none!important}