/* 건설안전 AI 체험 자료 — 공용 스타일. aileelab learn(trust·opt) 틀을 따른다.
   색: 계열색 --s1~--s5는 dataviz 검증기(scripts/validate_palette.js)로 밝은·어두운 면 모두 통과한 순서. 순서를 바꾸지 않는다. */
:root{
  --bg:#FBFAF7; --fg:#1B2233; --muted:#5B6476; --line:#E3E0D8; --panel:#FFFFFF; --grid:#ECE9E2;
  --accent:#14213D; --hi:#C94F0A;
  --s1:#0072B2; --s2:#D55E00; --s3:#009E73; --s4:#B07A00; --s5:#AA4499; --neutral:#8A93A3;
  --fs:18px; --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#11161F; --fg:#E8E6E0; --muted:#9AA3B2; --line:#2A3241; --panel:#171D28; --grid:#222A37;
  --accent:#F6F4EF; --hi:#F2884B;
  --s1:#3987E5; --s2:#D95926; --s3:#199E70; --s4:#C98500; --s5:#D55181; --neutral:#6F7889;
  color-scheme:dark;}}
:root[data-theme="dark"]{
  --bg:#11161F; --fg:#E8E6E0; --muted:#9AA3B2; --line:#2A3241; --panel:#171D28; --grid:#222A37;
  --accent:#F6F4EF; --hi:#F2884B;
  --s1:#3987E5; --s2:#D95926; --s3:#199E70; --s4:#C98500; --s5:#D55181; --neutral:#6F7889;
  color-scheme:dark;}
:root[data-big="1"]{--fs:24px}

*{box-sizing:border-box}
html{font-size:var(--fs);scroll-padding-top:4.5rem}
body{margin:0;background:var(--bg);color:var(--fg);font:1rem/1.75 "Pretendard","Noto Sans KR",system-ui,sans-serif}
a{color:inherit;text-underline-offset:.2em}
h1,h2,h3,p,li,td{overflow-wrap:anywhere}
button,input,select,textarea{font:inherit}
button,select{color:var(--fg);background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:6px 11px}
button{cursor:pointer}button:hover{border-color:var(--hi)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--s1);outline-offset:3px}
input[type=range]{accent-color:var(--hi);width:100%;min-width:0}
input[type=text],input[type=number],textarea{color:var(--fg);background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:6px 8px;max-width:100%}
.skip{position:fixed;left:16px;top:-100px;z-index:99;background:var(--panel);padding:10px}.skip:focus{top:12px}

/* 폭 */
.wrap{max-width:760px;margin:0 auto;padding:0 16px}
.wide{max-width:1100px;margin:0 auto;padding:0 16px}

/* 머리 */
.tools{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap;padding-top:14px}
.tools button{font-size:.72rem;padding:4px 10px}
header.top{padding-top:8px;padding-bottom:22px}
header.top .field{font-size:.78rem;color:var(--muted);text-decoration:none}
header.top .field:hover{text-decoration:underline}
header.top .num{font:.8rem var(--mono);color:var(--hi);margin-right:.5em}
header.top h1{margin:.3rem 0 0;font-size:2.1rem;line-height:1.2;letter-spacing:-.03em;font-weight:750}
header.top .sub{color:var(--muted);font-size:.92rem;margin:.6rem 0 0;max-width:680px}
header.top .keys{font:.72rem var(--mono);color:var(--accent);margin-top:.5rem}

/* 탭 */
nav.tabs{position:sticky;top:0;z-index:5;background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow-x:auto;white-space:nowrap;scrollbar-width:thin}
nav.tabs .tab-inner{max-width:1100px;margin:auto;display:flex;min-width:max-content;padding:0 8px}
nav.tabs a{display:inline-block;padding:13px 14px;text-decoration:none;color:var(--muted);font-size:.82rem;border-bottom:3px solid transparent}
nav.tabs a span{font:.68rem var(--mono);margin-right:5px;color:var(--hi)}
nav.tabs a[aria-selected="true"]{color:var(--fg);font-weight:700;border-bottom-color:var(--hi)}
section.tab{display:none;padding-top:4px;padding-bottom:40px}
section.tab.on{display:block}

/* 본문 */
h2{font-size:1.3rem;font-weight:700;letter-spacing:-.02em;margin:2.2rem 0 .4rem}
h3{font-size:1.05rem;margin:1.6rem 0 .3rem}
h2 small,h3 small{font-weight:400;color:var(--muted);font-size:.7em;margin-left:.4em}
.anchor{opacity:.45;margin-left:.3em;text-decoration:none;color:var(--muted);font:.75em var(--mono);cursor:pointer;border:0;background:none;padding:2px 4px}
h2:hover .anchor,h3:hover .anchor,.anchor:focus{opacity:1}
.note{font-size:.8rem;color:var(--muted)}
.figure{margin:20px 0}.figure svg{width:100%;height:auto;display:block}
ul.summary li{margin:.2rem 0}

/* 체험 상자 */
/* 강의 흐름형 자료(탭 여러 개): 설명·해 볼 것·수식 */
.say{font-size:1rem}
.wrap-inner{max-width:760px}
.try{border-left:3px solid var(--hi);padding:2px 0 2px 14px;margin:14px 0 18px}
.try b{display:block;margin-bottom:4px}
.try ol{margin:0;padding-left:20px}
.formula{font:.9rem var(--mono);line-height:1.8;margin:10px 0;overflow-wrap:anywhere}
.hands{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:22px;margin:14px 0 22px}
.hands>h3:first-child{margin-top:0}
.demo-instructions{font-size:.85rem;color:var(--muted);margin:0 0 16px;max-width:728px}
.controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 28px;border-bottom:1px solid var(--line);padding-bottom:18px}
.control{min-width:0}
.control>label,.control legend{font-size:.74rem;display:block;margin-bottom:6px;color:var(--muted)}
.control .slider-row{display:flex;align-items:center;gap:12px}
.control output{font:.8rem var(--mono);min-width:5ch;text-align:right;white-space:nowrap}
.control select{width:100%;min-height:40px;font-size:.85rem}
.control fieldset{border:0;margin:0;padding:0}
.control .seg{display:flex;flex-wrap:wrap;gap:4px}
.control .seg button{font-size:.75rem;padding:5px 10px}
.control .seg button[aria-pressed="true"]{background:var(--accent);color:var(--bg);border-color:var(--accent)}
.control .check{display:flex;gap:8px;align-items:center;font-size:.8rem;color:var(--fg)}
.control-full{grid-column:1/-1}
.demo-actions{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.demo-actions button{font-size:.72rem;padding:4px 10px}
.demo-result{padding-top:14px}

/* 상태 칸 */
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--panel);border:1px solid var(--line);border-radius:6px;overflow:hidden;margin:10px 0 18px}
.metric{padding:11px 14px;background:var(--panel);box-shadow:0 0 0 1px var(--line)}
.metric span{display:block;color:var(--muted);font-size:.66rem}
.metric strong{font:1.3rem var(--mono);letter-spacing:-.04em}
.metric small{font-size:.66rem;color:var(--muted);margin-left:5px}
.result-note{font-size:.8rem;background:var(--bg);border-left:3px solid var(--s3);padding:10px 14px;margin:10px 0 0}

/* 그림 */
.chart{margin:12px 0 16px;position:relative}
.chart svg{display:block;width:100%;overflow:visible;font-family:inherit}
.chart .chart-title{font-size:.8rem;font-weight:600;margin-bottom:4px}
.chart-legend{display:flex;gap:6px 18px;flex-wrap:wrap;font-size:.7rem;color:var(--fg);margin:4px 0}
.chart-legend span{display:inline-flex;gap:6px;align-items:center}
.chart-legend i{display:inline-block;width:22px;height:0;border-top:2px solid currentColor}
.chart-legend i.box{width:12px;height:12px;border:0;border-radius:2px}
.chart svg text{fill:var(--muted);font-size:11px}
.chart svg .ax-title{fill:var(--fg);font-size:11.5px}
.chart svg .lbl{fill:var(--fg)}
.chart svg .grid line{stroke:var(--grid)}
.chart svg .axis line,.chart svg .axis path{stroke:var(--muted)}
.chart svg .hit{fill:transparent;cursor:pointer}
.chart svg.dragx{cursor:ew-resize;touch-action:pan-y}
.chart svg.drag{cursor:crosshair;touch-action:none}
.chart-tip{position:absolute;pointer-events:none;background:var(--fg);color:var(--bg);font-size:.72rem;padding:4px 8px;border-radius:5px;white-space:nowrap;opacity:0;transition:opacity .12s;z-index:3}
.chart-tip.on{opacity:1}
.chart-table summary{font-size:.72rem;color:var(--muted);cursor:pointer}

/* 표 */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:6px;margin:14px 0}
.table-scroll table{border-collapse:collapse;width:100%;font-size:.76rem}
.table-scroll th{color:var(--muted);background:var(--bg);font-weight:500}
.table-scroll th,.table-scroll td{padding:7px 11px;border-bottom:1px solid var(--line);text-align:left}
.table-scroll td.n{font-family:var(--mono);text-align:right;white-space:nowrap}
/* 표 안 한국어는 낱말 단위로 줄을 바꾼다(폰에서 '순/위', '0./74'처럼 쪼개지지 않게). 넘치면 표만 가로로 민다 */
.table-scroll th,.table-scroll td{overflow-wrap:break-word;word-break:keep-all}
.table-scroll td.w{word-break:normal;overflow-wrap:anywhere;min-width:7em}
.control .check,.control>label,.control legend{word-break:keep-all}
.table-scroll tr:last-child td{border-bottom:0}

/* 데이터 성격·출처·면책 */
.badge{display:inline-block;font-size:.66rem;font-weight:600;padding:1px 7px;border-radius:999px;border:1px solid currentColor;vertical-align:middle;margin-left:.4em;white-space:nowrap}
.badge.synthetic{color:var(--hi)}
.badge.public{color:var(--s3)}
.sources{font-size:.8rem;border-top:1px solid var(--line);margin-top:28px;padding-top:12px}
.sources h2{font-size:.95rem;margin:0 0 6px}
.sources ol{padding-left:1.3em;margin:0}
.sources li{margin-bottom:6px}
.sources .meta{color:var(--muted)}
.disclaimer{font-size:.75rem;color:var(--muted);margin-top:24px}
.disclaimer p{border-top:1px solid var(--line);padding-top:14px;margin:0}

/* 첫 화면 카드 */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;margin:18px 0 36px}
.card{display:flex;flex-direction:column;padding:18px 20px;border:1px solid var(--line);border-radius:8px;background:var(--panel);text-decoration:none;color:inherit}
a.card:hover{border-color:var(--hi)}
.card .card-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.card .card-num{font:.78rem var(--mono);color:var(--hi)}
.card .card-state{font-size:.66rem;color:var(--muted)}
.card h2{font-size:1.1rem;margin:10px 0 4px;line-height:1.35}
.card h2 small{display:block;font-size:.78rem;font-weight:500;color:var(--muted);margin:2px 0 0}
.card p{font-size:.82rem;color:var(--muted);margin:0 0 10px}
.card .card-keys{margin-top:auto;font:.68rem var(--mono);color:var(--accent);border-top:1px solid var(--line);padding-top:10px}
.card.off{background:transparent;border-style:dashed}
.card.off h2{color:var(--muted)}

/* 바닥글 */
footer.brand{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:20px 16px 32px;font-size:12px;color:var(--muted);max-width:1100px;margin:0 auto}
footer.brand img{height:20px;width:auto;display:block}
footer.brand .wm-dark{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) footer.brand .wm-light{display:none}:root:not([data-theme="light"]) footer.brand .wm-dark{display:block}}
:root[data-theme="dark"] footer.brand .wm-light{display:none}
:root[data-theme="dark"] footer.brand .wm-dark{display:block}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:6px 12px;border-radius:6px;font-size:.8rem;opacity:0;transition:opacity .2s;pointer-events:none;z-index:20;max-width:calc(100% - 32px)}
.toast.on{opacity:1}

@media (max-width:600px){
  header.top h1{font-size:1.7rem}
  .hands{padding:16px 12px}
  .controls{grid-template-columns:1fr 1fr;gap:14px 12px}
  .controls>.control:not(:has(>label.check)){grid-column:1/-1}  /* 폰: 체크 칸만 두 개씩, 나머지는 한 줄 */
  .metrics{grid-template-columns:repeat(auto-fit,minmax(min(100%,7rem),1fr))}
  .metric{padding:10px 9px}.metric strong{font-size:1.1rem}
  .cards{grid-template-columns:1fr}
  nav.tabs a{padding:12px 10px}
}
@media print{
  :root,:root[data-theme=dark],:root:not([data-theme=light]){--bg:#fff;--panel:#fff;--fg:#111;--muted:#444;--line:#bbb;--grid:#ddd;--accent:#14213D;--hi:#943e1b;
    --s1:#0072B2;--s2:#D55E00;--s3:#009E73;--s4:#B07A00;--s5:#AA4499;--fs:12px}
  nav.tabs,.tools,.demo-actions,.anchor,.skip,.chart-tip{display:none!important}
  footer.brand .wm-light{display:block!important}footer.brand .wm-dark{display:none!important}
  section.tab{display:block!important;break-before:page}
  section.tab:first-of-type{break-before:auto}
  .wrap,.wide{max-width:none}
  .hands,.chart,.metrics{break-inside:avoid}
  body{print-color-adjust:exact;-webkit-print-color-adjust:exact}
}
/* English units may be longer than the original Korean labels. */
.control .slider-row input[type="range"]{min-width:0;width:0;flex:1}
.control .slider-row output{max-width:55%;white-space:normal;overflow-wrap:anywhere}
.badge{max-width:100%;white-space:normal;overflow-wrap:anywhere}
.control .check{min-width:0;overflow-wrap:anywhere}