:root{--bg:#f7f7f4;--paper:#fffdfa;--elev:#e6e5e0;--ink:#252414;--muted:#746f64;--line:#cdcdc9;--brand:#f54e00;--green:#34785c;--amber:#c08532;--radius:8px;--shadow:0 18px 45px rgba(0,0,0,.10),0 0 0 1px rgba(0,0,0,.08)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Segoe UI",sans-serif;word-break:keep-all;letter-spacing:-.012em}.page{max-width:1280px;margin:0 auto;padding:28px 22px 80px}.hero,.card,.panel,.map,.detail,.lesson,.common{background:var(--elev);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.hero{padding:30px;margin-bottom:30px}.eyebrow{font-size:11px;color:var(--brand);font-weight:800;letter-spacing:.14em;text-transform:uppercase}.hero h1{font-size:clamp(34px,5vw,68px);letter-spacing:-.055em;line-height:1.02;margin:8px 0 12px;font-weight:500}.hero p{max-width:900px;color:var(--muted);font-size:15px;line-height:1.7}.nav{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.pill,.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:6px;background:var(--paper);padding:7px 10px;color:var(--ink);font-size:12px;text-decoration:none;font-weight:700}.pill:hover{border-color:var(--brand);color:var(--brand)}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin:32px 0 14px}.section-head h2{font-size:28px;line-height:1.2;margin:0;font-weight:500}.section-head p{max-width:540px;margin:0;color:var(--muted);line-height:1.55;font-size:13px}.shell{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:16px;align-items:start}.map,.detail{padding:18px}.flow-board{position:relative;overflow:auto;overscroll-behavior-x:contain;padding-bottom:10px}.flow-grid{display:grid;grid-template-columns:repeat(var(--flow-col-count,5),minmax(210px,1fr));gap:12px;min-width:max(100%,calc(var(--flow-col-count,5)*222px))}.flow-card{border:1px solid var(--line);background:var(--paper);border-radius:6px;padding:14px;min-height:175px;text-align:left;color:inherit;cursor:pointer}.flow-card.active{border-color:var(--brand);box-shadow:0 0 0 2px rgba(245,78,0,.16)}.flow-card h3{font-size:18px;margin:10px 0 8px}.flow-card p{font-size:13px;color:var(--muted);line-height:1.55}.num{display:inline-flex;justify-content:center;align-items:center;width:26px;height:26px;border:1px solid var(--brand);border-radius:5px;color:var(--brand);font-family:ui-monospace,Menlo,monospace}.mini{display:flex;gap:5px;flex-wrap:wrap;margin-top:12px}.mini span{font-size:11px;border:1px solid var(--line);border-radius:5px;background:var(--elev);padding:4px 6px}.detail{position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto}.detail h2{font-size:26px;margin:12px 0 8px}.detail p,.detail li{font-size:13px;line-height:1.65;color:var(--muted)}.detail h3{font-size:11px;letter-spacing:.12em;color:var(--brand);text-transform:uppercase;margin:20px 0 8px}.steps{padding:0;margin:0;list-style:none;display:grid;gap:8px}.steps li{display:grid;grid-template-columns:24px minmax(0,1fr);gap:8px}.steps b{display:inline-flex;justify-content:center;align-items:center;width:24px;height:24px;border:1px solid var(--line);border-radius:5px;color:var(--brand);background:var(--paper)}.lesson{padding:20px;margin-top:30px}.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px}.tab{border:1px solid var(--line);border-radius:6px;background:transparent;padding:8px 11px;font-weight:700;cursor:pointer}.tab.active{background:var(--paper);border-color:var(--brand);color:var(--brand)}.focus{display:grid;grid-template-columns:1fr 1fr;gap:14px}.diagram{min-height:280px;background:var(--paper);border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;padding:18px}.node{border:1px solid var(--line);border-radius:6px;background:var(--elev);padding:11px 13px;font-size:13px;font-weight:700}.arrow{color:var(--brand);font-weight:900}.copy{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:18px}.copy h3{font-size:22px;margin:0 0 10px}.copy p,.copy li{font-size:14px;color:var(--muted);line-height:1.7}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.card{padding:16px}.card h3{font-size:19px;margin:0 0 8px}.card p,.card li{font-size:13px;color:var(--muted);line-height:1.62}.hl{background:linear-gradient(transparent 62%,rgba(245,78,0,.20) 0);border-radius:2px}.footer{margin-top:26px;color:var(--muted);font-size:12px;line-height:1.6}.notice{border-left:3px solid var(--brand);padding:10px 12px;background:var(--paper);border-radius:6px;color:var(--muted);line-height:1.65}.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}

.selector,.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px}.selector button,.tab{border:1px solid var(--line);border-radius:6px;background:var(--paper);padding:8px 11px;font-weight:700;color:var(--ink);cursor:pointer}.selector button.is-active,.tab.is-active{border-color:var(--brand);color:var(--brand);box-shadow:0 0 0 2px rgba(245,78,0,.14)}.legend{display:flex;gap:8px;align-items:center;margin:8px 0 12px;color:var(--muted);font-size:12px}.dot{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border:1px solid var(--brand);border-radius:5px;color:var(--brand);background:var(--paper);font-family:ui-monospace,Menlo,monospace}.canvas-wrap{position:relative;overflow:auto;overscroll-behavior-x:contain;padding:4px 4px 12px}.canvas{position:relative;z-index:1;display:grid;grid-template-columns:repeat(5,minmax(170px,1fr));gap:10px;min-width:max(100%,920px)}.col{display:grid;gap:8px;align-content:start;border:1px solid var(--line);border-radius:8px;background:rgba(255,253,250,.44);padding:10px}.col header{min-height:58px}.col h3{font-size:15px;margin:0 0 4px}.col p{font-size:11px;color:var(--muted);margin:0}.node{display:block;width:100%;border:1px solid var(--line);border-radius:6px;background:var(--paper);padding:10px;text-align:left;color:var(--ink);min-height:74px;position:relative;z-index:2}.node b{display:block;font-size:13px;margin-bottom:4px}.node span{display:block;font-size:11px;line-height:1.4;color:var(--muted)}.node.is-active{border-color:var(--brand);box-shadow:0 0 0 2px rgba(245,78,0,.16);background:#fffdfa}.node.is-support{border-style:dashed}.node.is-dim{opacity:.34}.connectors{position:absolute;inset:0;z-index:20;pointer-events:none}.connectors svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}.edge{fill:none;stroke:var(--brand);stroke-width:2.8;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 1px 0 rgba(255,253,250,.92)) drop-shadow(0 2px 5px rgba(0,0,0,.18))}.edge.alt{stroke:var(--green)}.connectors marker path{fill:var(--brand)}.edge-badge{position:absolute;z-index:30;transform:translate(-50%,-50%);display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;border:1px solid var(--brand);background:var(--paper);color:var(--brand);font-family:ui-monospace,Menlo,monospace;font-size:13px;font-weight:900;box-shadow:0 8px 20px rgba(0,0,0,.18)}.detail-top{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:start}.detail-icon{width:42px;height:42px;border:1px solid var(--brand);border-radius:8px;display:grid;place-items:center;background:var(--paper);font-size:22px}.detail-grid{display:grid;gap:8px}.stage{display:grid;gap:14px}.mini-flow{display:flex;gap:8px;align-items:stretch;overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:14px}.mini-flow>div:not(.arr){min-width:160px;flex:1;border:1px solid var(--line);border-radius:6px;background:var(--elev);padding:10px;font-weight:700;font-size:13px}.mini-flow small{display:block;color:var(--muted);font-weight:500;margin-top:5px;line-height:1.45}.arr{align-self:center;color:var(--brand);font-weight:900}.stage-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}@media(max-width:1280px){.canvas{grid-template-columns:repeat(5,minmax(170px,1fr));min-width:920px}}@media(max-width:720px){.canvas{grid-template-columns:1fr;min-width:0}.connectors{display:none}.mini-flow{display:grid}.arr{display:none}.detail-top{grid-template-columns:1fr}}
@media(max-width:1280px){.shell{grid-template-columns:1fr}.detail{position:static;max-height:none}.focus{grid-template-columns:1fr}.flow-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));min-width:0}}@media(max-width:720px){.page{padding:18px 14px 56px}.hero,.map,.detail,.lesson,.card{padding:16px}.section-head{display:block}.flow-card{min-height:auto}}


/* Beginner companion page: adapted html-for-beginners teaching patterns inside operator-guide shell */
.beginner-page .beginner-section{margin-bottom:22px}.beginner-page .prose{max-width:920px}.beginner-page .prose p{font-size:16px;line-height:1.85;color:var(--ink);margin:0 0 14px}.hero-analogy,.try{border:1px solid rgba(245,78,0,.32);background:#fffdfa;border-radius:8px;padding:18px;margin-top:16px;box-shadow:0 8px 22px rgba(0,0,0,.06)}.hero-analogy strong,.try strong{display:block;color:var(--brand);font-size:12px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}.hero-analogy p,.try p{margin:0;color:var(--ink);line-height:1.7}.term-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.term,.analogy,.danger,.good,.path-step,.comic-panel{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:16px}.term h3{margin:0 0 8px;font-size:17px}.term h3 span{display:block;margin-top:4px;color:var(--brand);font-size:12px;letter-spacing:.03em}.term p,.analogy p,.danger p,.good p,.path-step p,.comic-panel p{color:var(--muted);line-height:1.65;margin:0}.analogy-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.analogy .big{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;background:#f7f7f4;border:1px solid var(--line);border-radius:7px;margin-bottom:10px}.analogy h3,.danger h3,.good h3,.comic-panel h3{margin:0 0 8px;font-size:17px}.path-list{display:grid;gap:10px}.path-step{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:start}.path-step>b{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:7px;background:var(--brand);color:white;font-family:ui-monospace,Menlo,monospace}.path-step h3{margin:0 0 6px;font-size:18px}.pairs{display:grid;grid-template-columns:1fr 1fr;gap:12px}.danger{border-color:rgba(190,54,54,.34);background:#fff7f3}.danger h3{color:#9d3128}.good{border-color:rgba(52,120,92,.36);background:#f5fbf6}.good h3{color:var(--green)}.comic-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.comic-panel{position:relative;min-height:210px;background:linear-gradient(180deg,#fffdfa 0%,#f7f7f4 100%)}.comic-no{width:28px;height:28px;border-radius:6px;background:var(--ink);color:white;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:18px}.comic-panel blockquote{margin:14px 0 0;padding:10px 12px;border-left:3px solid var(--brand);background:#fffdfa;color:var(--ink);font-weight:700;line-height:1.5}.checklist{display:grid;gap:10px}.checklist label{display:flex;gap:10px;align-items:flex-start;background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:13px 14px;line-height:1.55}.checklist input{margin-top:4px;accent-color:var(--brand)}@media(max-width:1024px){.term-grid,.analogy-flow,.comic-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.pairs{grid-template-columns:1fr}}@media(max-width:640px){.term-grid,.analogy-flow,.comic-strip{grid-template-columns:1fr}.path-step{grid-template-columns:1fr}.path-step>b{margin-bottom:4px}}