:root {
    --ground:     #F5F6F8;
    --surface:    #FFFFFF;
    --surface-2:  #EDEFF3;
    --line:       #D9DDE4;
    --line-soft:  #E7EAEF;
    --text:       #10141A;
    --text-dim:   #5A6474;
    --text-faint: #8891A0;

    --c-advect:   #2563EB;
    --c-force:    #C2650B;
    --c-pressure: #7C3AED;
    --c-field:    #0D9488;
    --c-particle: #A16207;
    --c-collide:  #DC2626;
    --c-control:  #475569;

    --shadow: 0 1px 2px rgba(16,20,26,.06), 0 8px 24px -12px rgba(16,20,26,.18);

    --display: 'Archivo', 'IBM Plex Sans KR', system-ui, sans-serif;
    --body:    'IBM Plex Sans KR', system-ui, -apple-system, sans-serif;
    --mono:    'IBM Plex Mono', ui-monospace, monospace;
    --wrap: 1180px;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --ground: #0E1116; --surface: #161B22; --surface-2: #1C222B;
      --line: #262E39; --line-soft: #1F2630;
      --text: #E6EAF0; --text-dim: #9AA5B4; --text-faint: #6C7787;
      --c-advect: #60A5FA; --c-force: #FBA94C; --c-pressure: #A78BFA;
      --c-field: #2DD4BF; --c-particle: #FCD34D; --c-collide: #F87171; --c-control: #94A3B8;
      --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px -14px rgba(0,0,0,.7);
    }
  }
  :root[data-theme="dark"] {
    --ground: #0E1116; --surface: #161B22; --surface-2: #1C222B;
    --line: #262E39; --line-soft: #1F2630;
    --text: #E6EAF0; --text-dim: #9AA5B4; --text-faint: #6C7787;
    --c-advect: #60A5FA; --c-force: #FBA94C; --c-pressure: #A78BFA;
    --c-field: #2DD4BF; --c-particle: #FCD34D; --c-collide: #F87171; --c-control: #94A3B8;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px -14px rgba(0,0,0,.7);
  }

  * { box-sizing: border-box }
  body { margin: 0; background: var(--ground); color: var(--text);
         font: 400 16px/1.7 var(--body); -webkit-font-smoothing: antialiased }
  .wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px }

  header { border-bottom: 1px solid var(--line); background: var(--surface) }
  .head-in { padding: 44px 0 36px; display: flex; flex-direction: column; gap: 14px }
  .eyebrow { font: 500 12px/1 var(--mono); letter-spacing: .14em;
             text-transform: uppercase; color: var(--text-faint) }
  h1 { margin: 0; font: 800 clamp(30px, 5vw, 46px)/1.08 var(--display);
       letter-spacing: -.02em; text-wrap: balance }
  .lede { margin: 0; max-width: 64ch; color: var(--text-dim); font-size: 17px }
  .lede b { color: var(--text); font-weight: 600 }

  section.blockish { padding: 40px 0 8px }
  h2 { margin: 0 0 6px; font: 700 24px/1.25 var(--display); letter-spacing: -.01em }
  .sec-note { margin: 0 0 22px; color: var(--text-dim); max-width: 66ch }
  .sec-note code, .txt code, .rec p code, li code {
    font: 500 13.5px var(--mono); background: var(--surface-2);
    padding: 2px 6px; border-radius: 4px; border: 1px solid var(--line-soft) }

  /* 파이프라인 */
  .pipe { display: flex; overflow-x: auto; padding-bottom: 6px }
  .step { flex: 1 1 0; min-width: 152px; background: var(--surface);
          border: 1px solid var(--line); border-right: 0; padding: 15px 15px 17px;
          display: flex; flex-direction: column; gap: 6px }
  .step:first-child { border-radius: 10px 0 0 10px }
  .step:last-child { border-right: 1px solid var(--line); border-radius: 0 10px 10px 0 }
  .step-n { font: 500 11px/1 var(--mono); letter-spacing: .1em; color: var(--text-faint) }
  .step-t { font: 600 15px/1.3 var(--body) }
  .step-d { font-size: 13.5px; line-height: 1.6; color: var(--text-dim) }
  .step[data-c="force"]    { border-top: 3px solid var(--c-force) }
  .step[data-c="advect"]   { border-top: 3px solid var(--c-advect) }
  .step[data-c="pressure"] { border-top: 3px solid var(--c-pressure) }
  .step[data-c="collide"]  { border-top: 3px solid var(--c-collide) }
  .step[data-c="field"]    { border-top: 3px solid var(--c-field) }
  .callout { margin: 14px 0 0; font-size: 14.5px; color: var(--text-dim);
             padding: 13px 16px; background: var(--surface-2); border-radius: 8px;
             border-left: 3px solid var(--c-control); line-height: 1.7 }
  .callout b { color: var(--text) }

  /* 배선 */
  .wires { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
           gap: 13px; margin-top: 4px }
  .wire { background: var(--surface); border: 1px solid var(--line);
          border-radius: 9px; padding: 15px 16px 17px }
  .wire .w-n { font: 500 11px/1 var(--mono); letter-spacing: .1em; color: var(--text-faint) }
  .wire .w-t { font: 600 14.5px var(--mono); margin: 7px 0 6px; color: var(--c-advect) }
  .wire p { margin: 0; font-size: 14px; line-height: 1.65; color: var(--text-dim) }

  /* 공통 파라미터 */
  .common { background: var(--surface); border: 1px solid var(--line);
            border-radius: 10px; padding: 4px 18px 18px; margin-top: 4px }

  /* 컨트롤 */
  .controls { position: sticky; top: 0; z-index: 20; background: var(--ground);
              border-bottom: 1px solid var(--line); margin-top: 38px }
  .controls-in { padding: 14px 0; display: flex; gap: 12px; align-items: center; flex-wrap: wrap }
  #q { flex: 1 1 240px; min-width: 200px; background: var(--surface);
       border: 1px solid var(--line); border-radius: 8px; padding: 9px 13px;
       font: 400 15px var(--body); color: var(--text) }
  #q:focus { outline: 2px solid var(--c-advect); outline-offset: 1px; border-color: transparent }
  .cats { display: flex; gap: 7px; flex-wrap: wrap }
  .cat { border: 1px solid var(--line); background: var(--surface); color: var(--text-dim);
         border-radius: 999px; padding: 7px 13px; cursor: pointer;
         font: 500 13.5px var(--body); display: inline-flex; align-items: center; gap: 7px }
  .cat:hover { border-color: var(--text-faint) }
  .cat:focus-visible { outline: 2px solid var(--c-advect); outline-offset: 2px }
  .dot { width: 9px; height: 9px; border-radius: 50%; background: currentColor; flex: none }
  .cat.on { border-color: currentColor; background: var(--surface-2) }
  .cat .n { font: 500 12px var(--mono); color: var(--text-faint) }

  /* 노드 */
  .list { padding: 26px 0 10px; display: flex; flex-direction: column; gap: 30px }
  .group-h { display: flex; align-items: baseline; gap: 11px; margin-bottom: 13px;
             padding-bottom: 9px; border-bottom: 1px solid var(--line) }
  .group-h h3 { margin: 0; font: 700 19px/1.2 var(--display) }
  .group-h .en { font: 500 12.5px var(--mono); color: var(--text-faint) }
  .group-h .cnt { margin-left: auto; font: 500 12px var(--mono); color: var(--text-faint) }
  .cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 13px }

  .card { background: var(--surface); border: 1px solid var(--line);
          border-radius: 10px; overflow: hidden; transition: border-color .13s }
  .card:hover { border-color: var(--text-faint) }
  .card.open { box-shadow: var(--shadow) }
  .card-top { width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
              padding: 14px 15px; display: flex; flex-direction: column; gap: 5px;
              border-left: 3px solid var(--cc); color: var(--text); font: inherit }
  .card-top:focus-visible { outline: 2px solid var(--cc); outline-offset: -2px }
  .name-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap }
  .name { font: 600 14.5px var(--mono); color: var(--cc) }
  .freq { font: 500 10.5px/1 var(--mono); letter-spacing: .06em; padding: 3px 6px;
          border-radius: 4px; border: 1px solid var(--line); color: var(--text-faint) }
  .freq[data-f="핵심"] { color: var(--cc); border-color: currentColor }
  .kr { font: 600 15.5px/1.35 var(--body) }
  .one { font-size: 13.5px; line-height: 1.6; color: var(--text-dim) }

  .body { display: none; padding: 0 15px 16px; border-top: 1px solid var(--line-soft) }
  .card.open .body { display: block }
  .blk { padding-top: 14px }
  .blk-h { font: 500 11px/1 var(--mono); letter-spacing: .11em; text-transform: uppercase;
           color: var(--text-faint); margin-bottom: 8px }
  .blk p { margin: 0; font-size: 14.5px; line-height: 1.72 }
  .blk .use { color: var(--text-dim) }
  .blk p code { font: 500 13px var(--mono); background: var(--surface-2);
                padding: 2px 5px; border-radius: 4px; border: 1px solid var(--line-soft) }

  .params { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line-soft) }
  .prow { display: grid; grid-template-columns: minmax(120px, 34%) 1fr; gap: 12px;
          padding: 9px 0; border-bottom: 1px solid var(--line-soft) }
  .prow:last-child { border-bottom: 0 }
  .pn { font: 500 12.5px/1.5 var(--mono); color: var(--text) }
  .pv { font-size: 13.5px; line-height: 1.6; color: var(--text-dim) }
  .pv b { color: var(--text); font-weight: 600 }
  .pv code, .pn code { font: 500 12.5px var(--mono); background: var(--surface-2);
                       padding: 1px 5px; border-radius: 4px; border: 1px solid var(--line-soft) }
  .dflt { display: inline-block; margin-left: 7px; font: 500 11px/1.5 var(--mono);
          padding: 1px 6px; border-radius: 4px; background: var(--surface-2);
          border: 1px solid var(--line); color: var(--text-faint); vertical-align: 1px }
  .where { margin-top: 12px; padding: 10px 12px; background: var(--surface-2);
           border-radius: 7px; font-size: 13.5px; line-height: 1.65; color: var(--text-dim) }
  .where b { color: var(--text); font-weight: 600 }
  .empty { padding: 44px 0; text-align: center; color: var(--text-faint) }

  /* 레시피 */
  .rec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
              gap: 15px; margin-top: 20px }
  .rec { background: var(--surface); border: 1px solid var(--line);
         border-radius: 10px; padding: 17px 18px 19px }
  .rec h4 { margin: 0 0 8px; font: 700 16.5px/1.3 var(--display) }
  .rec p { margin: 0 0 11px; font-size: 14.5px; line-height: 1.68; color: var(--text-dim) }
  .rec ol { margin: 0; padding-left: 19px; font-size: 14px; line-height: 1.75; color: var(--text-dim) }
  .rec ol b { color: var(--text) }
  pre { margin: 11px 0 0; padding: 13px 14px; background: var(--surface-2);
        border: 1px solid var(--line-soft); border-radius: 7px; overflow-x: auto;
        font: 400 12.5px/1.65 var(--mono); color: var(--text) }

  .steps-n { margin: 18px 0 0; padding: 0; list-style: none;
             display: flex; flex-direction: column; gap: 13px }
  .steps-n li { display: flex; gap: 13px; align-items: flex-start }
  .steps-n .num { flex: none; width: 25px; height: 25px; border-radius: 50%;
                  background: var(--surface-2); border: 1px solid var(--line);
                  font: 600 12.5px/23px var(--mono); text-align: center; color: var(--text-dim) }
  .steps-n .txt { font-size: 15px; line-height: 1.68 }

  footer { margin-top: 46px; border-top: 1px solid var(--line); background: var(--surface) }
  .foot-in { padding: 26px 0 34px; color: var(--text-faint); font-size: 13.5px; line-height: 1.75 }
  .foot-in b { color: var(--text-dim) }

  @media (max-width: 640px) {
    .head-in { padding: 32px 0 26px }
    .cards { grid-template-columns: 1fr }
    .prow { grid-template-columns: 1fr; gap: 3px }
  }
  @media (prefers-reduced-motion: reduce) { * { transition: none !important } }
  /* ---------- 노드 그래프 재현 ---------- */
  .graph { background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
           padding: 22px 20px 24px; margin-top: 6px; overflow-x: auto }
  .gtitle { font: 500 11px/1 var(--mono); letter-spacing: .11em; text-transform: uppercase;
            color: var(--text-faint); margin-bottom: 18px }
  .gwrap { min-width: 560px; display: flex; flex-direction: column; align-items: center }
  .grow { display: flex; gap: 14px; justify-content: center; align-items: flex-end }
  .gnode { border: 1px solid var(--line); border-radius: 6px; background: var(--surface-2);
           padding: 9px 12px 10px; min-width: 132px; text-align: center }
  .gnode .gn-t { font: 500 12px/1.35 var(--mono) }
  .gnode .gn-s { font: 400 10.5px/1.4 var(--body); color: var(--text-faint); margin-top: 2px }
  .gnode[data-c="force"] { border-color: var(--c-force); box-shadow: inset 3px 0 0 var(--c-force) }
  .gsolver { border: 1px solid var(--c-advect); border-radius: 8px; background: var(--surface);
             min-width: 430px; box-shadow: var(--shadow) }
  .gsolver .gs-h { font: 600 13px var(--mono); padding: 10px 14px; color: var(--c-advect);
                   border-bottom: 1px solid var(--line) }
  .gports { display: flex }
  .gport { flex: 1; padding: 9px 8px 11px; text-align: center; border-right: 1px solid var(--line-soft) }
  .gport:last-child { border-right: 0 }
  .gport .gp-n { font: 500 10px/1 var(--mono); color: var(--text-faint) }
  .gport .gp-l { font: 500 11px/1.3 var(--body); margin-top: 4px }
  .gport.hi { background: var(--surface-2) }
  .gport.hi .gp-l { color: var(--c-force) }
  .vline { width: 1px; height: 20px; background: var(--line) }
  .vline.acc { background: var(--c-force) }
  .glabel { font: 400 11.5px var(--body); color: var(--text-faint); margin: 7px 0 3px }

  /* ---------- 파라미터 패널 재현 ---------- */
  .panel { background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
           overflow: hidden; margin-top: 6px }
  .panel-h { display: flex; align-items: center; gap: 9px; padding: 10px 14px;
             border-bottom: 1px solid var(--line); background: var(--surface-2) }
  .panel-h .p-ico { width: 15px; height: 15px; border-radius: 3px; background: var(--c-force); flex: none }
  .panel-h .p-t { font: 600 13px var(--mono) }
  .panel-rows { padding: 6px 0 8px }
  .prow2 { display: grid; grid-template-columns: 178px 1fr; gap: 12px; align-items: center;
           padding: 6px 16px }
  .prow2 .lbl { font: 400 12.5px var(--body); color: var(--text-dim); text-align: right }
  .prow2 .fld { font: 400 12.5px var(--mono); background: var(--ground); justify-self: start;
                border: 1px solid var(--line); border-radius: 4px; padding: 5px 10px; min-width: 120px }
  .prow2 .fld.num { min-width: 70px }
  .prow2 .fld.vec { letter-spacing: .12em }
  .prow2.note { padding-top: 0; padding-bottom: 10px }
  .prow2 .why { grid-column: 2; font: 400 12px/1.55 var(--body); color: var(--text-faint) }
  .prow2 .why b { color: var(--c-force); font-weight: 600 }
  @media (max-width: 640px) {
    .prow2 { grid-template-columns: 1fr; gap: 4px }
    .prow2 .lbl { text-align: left }
    .prow2 .why { grid-column: 1 }
  }

/* ---------- 심화 블록 ---------- */
.cmp{margin:0 0 14px}
.cmp-imgs{display:flex;gap:10px}
.cmp-imgs>div{flex:1 1 0;min-width:0;text-align:center}
.cmp-imgs img{width:100%;height:auto;display:block;border-radius:8px;background:#14161c}
.cmp-imgs span{display:block;margin-top:6px;font-size:12px;color:#9aa3b2}
.cmp figcaption{margin-top:9px;font-size:13.5px;line-height:1.65;color:#c3cad6}
ol.steps{margin:0;padding-left:1.25em}
ol.steps li{margin:0 0 7px;line-height:1.7}
ul.gotcha{margin:0;padding-left:1.1em;list-style:none}
ul.gotcha li{position:relative;margin:0 0 7px;line-height:1.7;padding-left:2px}
ul.gotcha li::before{content:'!';position:absolute;left:-1.1em;color:#e5695f;font-weight:700}
.feel{margin-top:10px;padding:9px 12px;border-radius:8px;background:rgba(120,160,255,.09);
      font-size:13.5px;line-height:1.6;color:#cdd6e4}
kbd{padding:1px 6px;border:1px solid #3a4152;border-radius:5px;background:#20242e;font-size:12px}
@media(max-width:560px){.cmp-imgs{gap:7px}.cmp-imgs span{font-size:11px}}

.deep{line-height:1.85;color:#c8d0dc;font-size:14.5px}
.deep code{font-size:13px}
figure.sweep{margin:0}
figure.sweep img{display:block;width:100%;max-width:230px;height:auto;border-radius:9px;background:#14161c}
figure.sweep figcaption{margin-top:9px;font-size:13.5px;line-height:1.7;color:#c3cad6}
pre.code{position:relative;margin:0;padding:14px 16px;border-radius:9px;background:#0d0f14;
  border:1px solid #262b36;overflow-x:auto;font-size:13px;line-height:1.75;color:#c9d3e2;
  font-family:ui-monospace,Consolas,monospace}
pre.code .lang{position:absolute;top:8px;right:12px;font-size:11px;color:#5d6778}
@media(max-width:560px){figure.sweep img{max-width:100%}.deep{font-size:14px}}

/* ---------- 팝업 ---------- */
body.noscroll{overflow:hidden}
.modal{position:fixed;inset:0;z-index:900;display:flex;align-items:center;justify-content:center;padding:24px}
.modal[hidden]{display:none!important}
.modal-bd{position:absolute;inset:0;background:rgba(6,8,12,.82);backdrop-filter:blur(3px)}
.modal-win{position:relative;display:flex;flex-direction:column;width:min(920px,100%);max-height:min(92vh,1000px);
  background:#161922;border:1px solid #2c323f;border-top:3px solid var(--cc,#7aa2ff);
  border-radius:14px;box-shadow:0 24px 70px rgba(0,0,0,.6);outline:none;overflow:hidden}
.modal-h{display:flex;align-items:flex-start;gap:14px;padding:18px 20px 15px;border-bottom:1px solid #262b36;background:#191d27}
.mh-txt{min-width:0;flex:1}
.mh-name{font-size:21px;font-weight:700;color:#eef2f8;letter-spacing:.2px}
.mh-kr{margin-top:4px;font-size:13px;color:var(--cc,#7aa2ff)}
.modal-x{flex:none;width:34px;height:34px;border:1px solid #333a48;border-radius:9px;background:#20242e;
  color:#9aa3b2;font-size:15px;cursor:pointer;line-height:1}
.modal-x:hover{background:#2a2f3b;color:#e6ebf2}
.modal-body{overflow-y:auto;overscroll-behavior:contain;padding:20px 22px 26px}
.modal-body .blk{margin-bottom:22px}
.modal-body p{line-height:1.8}
p.lead{font-size:15.5px;line-height:1.75;color:#dbe2ec}

.card-top .more{margin-top:10px;font-size:12px;color:var(--cc,#7aa2ff);opacity:.85}
.card-top:hover .more{opacity:1}

/* 실전 레시피 */
.recipe{margin:0 0 14px;padding:14px 16px;border:1px solid #2b313d;border-radius:10px;background:#12151d}
.rc-t{font-weight:700;color:#e8edf5;margin-bottom:7px;font-size:14.5px}
.rc-i{margin:0 0 9px;color:#b9c2d0;line-height:1.75}
.rc-n{margin-top:9px;padding-top:9px;border-top:1px dashed #2f3543;font-size:13px;color:#9fa9ba;line-height:1.7}

/* 증상별 해결 */
.trouble{display:flex;flex-direction:column;gap:10px}
.tr{padding:12px 14px;border:1px solid #2b313d;border-radius:10px;background:#12151d}
.tr-s{font-weight:700;color:#f0c674;margin-bottom:6px;line-height:1.6}
.tr-c,.tr-f{font-size:13.5px;line-height:1.7;color:#c0c9d6;margin-top:3px}
.tr-c b,.tr-f b{display:inline-block;min-width:34px;color:#7f8a9c;font-weight:600;margin-right:4px}

/* 함께 쓰는 노드 */
.rel{display:flex;flex-wrap:wrap;gap:8px}
.rel-i{display:flex;flex-direction:column;gap:3px;text-align:left;flex:1 1 240px;min-width:0;
  padding:10px 12px;border:1px solid #2f3543;border-radius:9px;background:#12151d;cursor:pointer}
.rel-i:hover{border-color:var(--cc,#7aa2ff);background:#171b24}
.rel-n{font-weight:600;color:#dfe6f0;font-size:13.5px}
.rel-w{font-size:12.5px;color:#96a0b0;line-height:1.6}

/* 용어 */
.terms{display:flex;flex-direction:column;gap:8px}
.tm{display:flex;gap:12px;align-items:baseline}
.tm-t{flex:none;min-width:130px;font-weight:600;color:#dfe6f0;font-size:13.5px}
.tm-d{color:#aeb8c6;font-size:13.5px;line-height:1.7}

.code-t{margin:0 0 6px;font-size:13px;color:#9aa3b2}
.code-t:not(:first-child){margin-top:12px}
ul.refs{margin:0;padding-left:1.15em}
ul.refs li{margin:0 0 6px;line-height:1.7}
ul.refs a{color:#7aa2ff}
.rf-n{color:#828d9e;font-size:12.5px}

@media(max-width:640px){
  .modal{padding:0}
  .modal-win{width:100%;max-width:none;height:100%;max-height:none;border-radius:0;border-left:0;border-right:0}
  .modal-body{padding:16px 15px 30px}
  .mh-name{font-size:18px}
  .tm{flex-direction:column;gap:2px}
  .tm-t{min-width:0}
}

/* ---------- R&D ---------- */
#rnd{display:flex;flex-direction:column;gap:26px}
.rnd{padding:18px 18px 16px;border:1px solid #2a3040;border-radius:12px;background:#141821}
.rnd-h h3{margin:0 0 5px;font-size:17px;color:#eef2f8;font-weight:700;line-height:1.45}
.rnd-h p{margin:0 0 13px;font-size:13.5px;color:#98a2b3;line-height:1.65}
.rnd-shots{display:grid;gap:11px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.rnd-shots figure{margin:0;min-width:0}
.rnd-shots img{display:block;width:100%;height:auto;border-radius:9px;background:#14161c}
.rnd-shots figcaption{margin-top:7px;font-size:12px;line-height:1.55}
.rnd-shots figcaption b{display:block;color:#dfe6f0;font-weight:600}
.rnd-shots figcaption span{display:block;margin-top:2px;color:#828d9e;font-size:11.5px}
.rnd-read{margin-top:14px;font-size:14px;line-height:1.8;color:#c5cddb}
.rnd-cost{margin-top:10px;padding:9px 12px;border-radius:8px;background:rgba(120,160,255,.09);
  font-size:13px;line-height:1.7;color:#cdd6e4}
.rnd-nodes{margin-top:13px;display:flex;flex-wrap:wrap;gap:7px;align-items:center}
.rnd-nodes>span{font-size:12px;color:#7f8a9c;margin-right:3px}
.rnd-chip{flex:0 0 auto;padding:5px 11px;font-size:12.5px;color:#cfd7e3;border:1px solid #2f3543;
  border-radius:99px;background:#12151d;cursor:pointer}
.rnd-chip:hover{border-color:#7aa2ff;color:#eaf0f8}
@media(max-width:560px){
  .rnd{padding:14px 13px}
  .rnd-shots{grid-template-columns:repeat(2,1fr);gap:8px}
}

/* ---------- 노드 안 R&D ---------- */
.blk.rndblk{padding:15px 16px 14px;border:1px solid #2a3040;border-radius:11px;background:#12151d}
.blk.rndblk .blk-h{color:#8fd4a0}
.rnd-lead{margin:0 0 12px;font-size:13.5px;color:#98a2b3;line-height:1.65}
.rnd-shots{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(128px,1fr))}
.rnd-shots figure{margin:0;min-width:0}
.rnd-shots img{display:block;width:100%;height:auto;border-radius:8px;background:#14161c}
.rnd-shots figcaption{margin-top:6px;font-size:11.5px;line-height:1.5}
.rnd-shots figcaption b{display:block;color:#dfe6f0;font-weight:600}
.rnd-shots figcaption span{display:block;margin-top:2px;color:#828d9e;font-size:11px}
.rnd-read{margin-top:13px;font-size:13.5px;line-height:1.8;color:#c5cddb}
.rnd-cost{margin-top:10px;padding:9px 12px;border-radius:8px;background:rgba(120,160,255,.09);
  font-size:13px;line-height:1.7;color:#cdd6e4}
@media(max-width:560px){.rnd-shots{grid-template-columns:repeat(2,1fr);gap:8px}}

/* ---------- 테마 탭 ---------- */
.themes{border-bottom:1px solid #232936;background:#101319;position:sticky;top:0;z-index:500}
.themes-in{display:flex;gap:8px;padding:9px 0}
.theme{flex:1 1 0;min-width:0;display:block;padding:11px 15px;border:1px solid #262c39;
  border-radius:11px;background:#151922;text-decoration:none;
  transition:border-color .12s,background .12s}
.theme:hover{border-color:#3c465a;background:#1a1f2a}
.theme .th-n{display:block;font-family:Archivo,system-ui,sans-serif;font-weight:700;
  font-size:15px;color:#c8d0dc;letter-spacing:.2px}
.theme .th-d{display:block;margin-top:3px;font-size:12px;color:#7d8798;line-height:1.5}
.theme.on{border-color:#7aa2ff;background:#1a2030}
.theme.on .th-n{color:#eaf0f8}
.theme.on .th-d{color:#93a3bd}
@media(max-width:560px){
  .themes-in{gap:6px;padding:7px 0}
  .theme{padding:9px 11px}
  .theme .th-n{font-size:13.5px}
  .theme .th-d{font-size:11px}
}


/* ---------- VEX 전체 함수 레퍼런스 ---------- */
.vr-bar{display:flex;align-items:center;gap:12px;margin:0 0 12px}
#vr-q{flex:1 1 auto;min-width:0;padding:11px 14px;border:1px solid #2d3341;border-radius:10px;
  background:#12151d;color:#e6ebf2;font-size:14px;font-family:inherit;outline:none}
#vr-q:focus{border-color:#7aa2ff}
.vr-count{flex:none;font-size:13px;color:#8b95a6}
.vr-count b{color:#c9d2df;font-weight:600}
.vr-chips{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 14px}
.vr-chip{padding:6px 12px;border:1px solid #2d3341;border-radius:99px;background:#12151d;
  color:#a9b3c2;font-size:12.5px;font-family:inherit;cursor:pointer;line-height:1.4}
.vr-chip b{color:#7d8798;font-weight:600;font-size:11.5px;margin-left:2px}
.vr-chip:hover{border-color:var(--gc,#7aa2ff);color:#dfe6f0}
.vr-chip.on{background:var(--gc,#7aa2ff);border-color:var(--gc,#7aa2ff);color:#0e1116}
.vr-chip.on b{color:rgba(14,17,22,.65)}
.vr-list{display:grid;gap:5px;grid-template-columns:repeat(auto-fill,minmax(330px,1fr))}
.vr-item{display:flex;align-items:baseline;gap:9px;width:100%;min-width:0;text-align:left;
  padding:8px 11px;border:1px solid #23283340;border-left:2px solid var(--gc,#7aa2ff);
  border-radius:7px;background:#12151d;cursor:pointer;font-family:inherit}
.vr-item:hover{background:#171b24;border-color:#333a48;border-left-color:var(--gc,#7aa2ff)}
.vr-n{flex:none;font-family:'IBM Plex Mono',Consolas,monospace;font-size:13px;color:#e2e8f1;font-weight:500}
.vr-deep{flex:none;padding:1px 6px;border-radius:99px;background:rgba(122,162,255,.16);
  color:#9dbcff;font-size:10.5px;line-height:1.6}
.vr-s{flex:1 1 auto;min-width:0;font-size:12px;color:#828d9e;line-height:1.5;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vr-more{grid-column:1/-1;margin-top:8px;padding:11px;border:1px dashed #333a48;border-radius:9px;
  background:transparent;color:#9aa5b4;font-size:13px;font-family:inherit;cursor:pointer}
.vr-more:hover{border-color:#7aa2ff;color:#cfd8e6}
@media(max-width:560px){
  .vr-list{grid-template-columns:1fr}
  .vr-bar{flex-wrap:wrap;gap:8px}
  .vr-s{display:none}
}


.vr-deep.vr-d2{background:rgba(94,200,168,.16);color:#7fd6b8}

/* ---------- 실습 레시피 ---------- */
.ck-list{display:flex;flex-direction:column;gap:14px}
.ck{border:1px solid #2a3040;border-radius:12px;background:#141821;overflow:hidden}
.ck-top{display:flex;align-items:center;gap:14px;width:100%;padding:14px 16px;
  background:none;border:0;cursor:pointer;text-align:left;font-family:inherit}
.ck-top:hover{background:#171c26}
.ck-thumbs{flex:none;display:flex;gap:4px}
.ck-thumbs img{width:58px;height:50px;object-fit:cover;border-radius:5px;background:#14161c}
.ck-txt{flex:1 1 auto;min-width:0}
.ck-t{font-size:15.5px;font-weight:700;color:#e9eef6;line-height:1.4}
.ck-g{margin-top:3px;font-size:13px;color:#8e99aa;line-height:1.55}
.ck-more{flex:none;font-size:12px;color:#7aa2ff}
@media(max-width:640px){
  .ck-top{flex-wrap:wrap;gap:10px}
  .ck-thumbs img{width:48px;height:42px}
  .ck-more{display:none}
}
.ck-shots{display:grid;gap:11px;grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
.ck-shots figure{margin:0;min-width:0}
.ck-shots img{display:block;width:100%;height:auto;border-radius:9px;background:#14161c}
.ck-shots figcaption{margin-top:7px;font-size:12px;line-height:1.55}
.ck-shots figcaption b{display:block;color:#dfe6f0;font-weight:600}
.ck-shots figcaption span{display:block;margin-top:2px;color:#828d9e;font-size:11.5px}
.ck-solo img{max-width:340px}
ul.ideas{margin:0;padding-left:1.15em}
ul.ideas li{margin:0 0 8px;line-height:1.75}
.uses{margin-top:10px;padding:10px 13px;border-radius:8px;background:rgba(94,200,168,.10);
  font-size:13.5px;line-height:1.7;color:#cfe0d8}