/* /survey/methodology/ — how Eco Heroes impact studies work (V87). Survey-hub palette; SDG accent colours. */
:root{--ink:#1c3a24;--muted:#4f6150;--bg:#f4f8ef;--card:#fff;--line:#e6eddd;--accent:#2d6e1a;--accent-s:#e8f5e0;--line-strong:#7b8673;--amber:#f2b705;--now:#2d6e1a;--later:#c9d8bf}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;font-family:Nunito,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
:root[lang="ar"] body{font-family:"Noto Sans Arabic",Nunito,system-ui,sans-serif}
:root[lang="ja"] body,:root[lang="ko"] body,:root[lang="zh"] body{line-height:1.75}
a{color:var(--accent)}
a:focus-visible,button:focus-visible,select:focus-visible,summary:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid #1a3a0d;outline-offset:2px}
.skip{position:absolute;inset-inline-start:8px;top:8px;z-index:20;background:#fff;color:var(--ink);padding:8px 14px;border-radius:8px;clip-path:inset(50%);width:1px;height:1px;overflow:hidden;white-space:nowrap}
.skip:focus{clip-path:none;width:auto;height:auto;overflow:visible}
.print-head{display:none}
.m-top{max-width:960px;margin:0 auto;padding:18px 20px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;text-decoration:none;color:var(--ink);min-height:44px}
.langsel{display:flex;gap:6px}
.langsel select,.langsel button{min-height:40px;padding:6px 10px;border-radius:8px;border:1px solid var(--line-strong);background:#fff;color:var(--ink);font:inherit;font-size:.9rem}
.langsel button{font-weight:800;cursor:pointer;min-width:44px}
main{max-width:960px;margin:0 auto;padding:8px 20px 56px}
main:focus{outline:none}
section{margin:0 0 44px;scroll-margin-top:70px}
.hero h1{font-size:clamp(1.7rem,4.6vw,2.5rem);line-height:1.2;margin:18px 0 10px}
.lead{font-size:1.1rem;color:var(--muted);max-width:66ch;margin:0 0 8px}
.meta{font-size:.88rem;color:var(--muted);margin:0 0 14px}
.actions{display:flex;flex-wrap:wrap;gap:10px}
.btn,.btn-ghost{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:10px 18px;border-radius:12px;font:inherit;font-weight:800;text-decoration:none;cursor:pointer}
.btn{background:var(--accent);color:#fff;border:0}
.btn-ghost{background:#fff;color:var(--accent);border:2px solid var(--accent)}
.toc{position:sticky;top:0;z-index:5;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;padding:10px 0;margin:0 0 26px;background:linear-gradient(var(--bg) 80%,rgba(244,248,239,0))}
.toc::-webkit-scrollbar{display:none}
.toc a{flex:0 0 auto;background:var(--card);border:1px solid var(--line);border-radius:100px;padding:8px 14px;text-decoration:none;font-weight:800;font-size:.9rem;color:var(--ink);min-height:40px}
.toc a[aria-current="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
h2{font-size:clamp(1.3rem,3.2vw,1.6rem);margin:0 0 10px;line-height:1.25}
h3{font-size:1.1rem;margin:22px 0 8px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;border-top:5px solid var(--accent)}
.card:nth-child(2){border-top-color:#26bde2}.card:nth-child(3){border-top-color:#fd9d24}.card:nth-child(4){border-top-color:#dd1367}
.card .ico{font-size:1.6rem}
.card h3{margin:6px 0 4px}
.card p{margin:0;color:var(--muted)}
.mainq{background:var(--accent-s);border-inline-start:5px solid var(--accent);border-radius:10px;padding:12px 14px;font-weight:700}
.ticks{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ticks li{padding-inline-start:28px;position:relative}
.ticks li::before{content:"✓";position:absolute;inset-inline-start:4px;color:var(--accent);font-weight:900}
/* rounds */
.tl{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;margin:16px 0}
.hint{margin:0 0 10px;color:var(--muted);font-size:.92rem}
.tl-grid{display:grid;grid-template-columns:minmax(90px,.8fr) repeat(3,1fr);gap:8px;align-items:center}
.tl-w{display:flex;flex-direction:column;align-items:center;gap:2px;min-height:56px;padding:8px;border-radius:12px;border:2px solid var(--line);background:#fff;font:inherit;color:var(--ink);cursor:pointer}
.tl-w b{font-size:1.15rem}.tl-w span{font-size:.82rem;color:var(--muted);text-align:center}
.tl-w[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-s)}
.tl-g{font-weight:800;font-size:.9rem}
.tl-bar{grid-column:2 / span 3;display:flex;border-radius:10px;overflow:hidden;font-size:.82rem;font-weight:800;min-height:34px}
.tl-bar span{display:flex;align-items:center;justify-content:center;padding:6px 8px;text-align:center}
.tl-bar.now span{flex:1 1 66%;background:var(--now);color:#fff}
.tl-bar.now::after{content:"";flex:1 1 34%;background:repeating-linear-gradient(45deg,#e8f5e0 0 8px,#f4f8ef 8px 16px)}
.tl-bar.later span:first-child{flex:1 1 66%;background:var(--later);color:var(--ink)}
.tl-bar.later .later-prog{flex:1 1 34%;background:#7fb069;color:#10240a}
.tl-p{margin-top:12px;padding:12px 14px;background:var(--accent-s);border-radius:12px}
.tl-p p{margin:0}
.js .tl-p[hidden]{display:none}
/* tabs */
.tabs{margin:14px 0}
.tablist{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.tablist [role=tab]{min-height:44px;padding:8px 14px;border-radius:100px;border:2px solid var(--line);background:#fff;font:inherit;font-weight:800;color:var(--ink);cursor:pointer}
.tablist [role=tab][aria-selected="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
.panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin-bottom:10px}
.panel-h{margin-top:0}
.js .tabs .panel-h{position:absolute;clip-path:inset(50%);width:1px;height:1px;overflow:hidden}
.note{color:var(--muted);font-size:.95rem}
/* example item */
.example{margin:18px 0 0;background:var(--card);border:2px dashed var(--line-strong);border-radius:18px;padding:14px 16px}
.example figcaption{font-size:.9rem;color:var(--muted);margin-bottom:8px}
.example fieldset{border:0;margin:0;padding:0}
.example legend{font-weight:800;font-size:1.12rem;margin-bottom:10px}
.faces{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.faces label{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 4px;border-radius:12px;border:2px solid var(--line);cursor:pointer;text-align:center;min-height:44px}
.faces input{position:absolute;opacity:0;width:1px;height:1px}
.faces .face{font-size:1.9rem;line-height:1}
.faces .fl{font-size:.78rem;color:var(--muted)}
.faces input:checked+.face{transform:scale(1.18)}
.faces label:has(input:checked){border-color:var(--accent);background:var(--accent-s)}
.faces label:has(input:focus-visible){outline:3px solid #1a3a0d;outline-offset:2px}
/* sample size */
.ss{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;margin-top:18px}
.ss h3{margin-top:0}
.ss-ctl label{display:block;font-weight:800;margin-bottom:6px}
.ss-ctl output{font-variant-numeric:tabular-nums;background:var(--accent-s);padding:2px 8px;border-radius:8px}
.ss-word{font-weight:600;color:var(--muted)}
.ss-ctl input[type=range]{width:100%;accent-color:var(--accent);min-height:32px}
.ss-res{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:10px 0 14px}
.ss-res div{background:var(--accent-s);border-radius:12px;padding:10px;text-align:center}
.ss-res b{display:block;font-size:1.8rem;font-variant-numeric:tabular-nums;color:var(--accent)}
.ss-res span{font-size:.85rem;color:var(--muted)}
table{border-collapse:collapse;width:100%;background:#fff;border-radius:12px;overflow:hidden}
th,td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:start;vertical-align:top}
thead th{background:var(--accent-s);font-size:.9rem}
.tg tbody th{font-weight:600}
.tg td{font-weight:800;color:var(--accent)}
.tw{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
.safe{list-style:none;margin:14px 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px}
.safe li{display:flex;gap:10px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.safe li span{font-size:1.4rem;line-height:1.2}
.safe p{margin:0}
.more{font-weight:800}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0 14px;margin-bottom:8px}
summary{cursor:pointer;font-weight:800;padding:12px 0;min-height:44px}
details p{margin:0 0 12px}
.gloss{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin:0}
.gloss div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.gloss dt{font-weight:800}.gloss dd{margin:4px 0 0;color:var(--muted)}
.related{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;border-top:1px solid var(--line);padding-top:18px}
.m-foot{max-width:960px;margin:0 auto;padding:16px 20px 40px;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;align-items:start;font-size:.82rem;color:var(--muted)}
.m-foot p{margin:0}.m-foot .url{grid-column:2}
@media (max-width:560px){.tl-grid{grid-template-columns:72px repeat(3,1fr)}.tl-w span{font-size:.72rem}.faces .fl{font-size:.68rem}}
/* print / PDF: everything expanded, no controls, the wheel and the rights notice on the page */
@page{size:A4;margin:18mm 14mm 20mm}
@media print{
  body{background:#fff;font-size:10.5pt}
  .cards{grid-template-columns:1fr 1fr}
  .m-top,.toc,.actions,.tablist,.hint,.ss-ctl,.skip,.related{display:none!important}
  .print-head{display:flex;align-items:center;gap:8px;font:700 10pt Helvetica,Arial,sans-serif;color:#1a3a0d;border-bottom:2px solid #1a3a0d;padding-bottom:6px;margin-bottom:6px}
  html.pdf .print-head{display:none}
  main{padding:0;max-width:none}
  section{margin:0 0 16pt;break-inside:auto}
  .card,.panel,.tl,.ss,.example,.safe li,details,.gloss div,tr{break-inside:avoid}
  .tl-p[hidden],.panel[hidden]{display:block!important}
  .js .tabs .panel-h{position:static;clip-path:none;width:auto;height:auto}
  details{border:0;padding:0}details>summary{list-style:none;padding:4px 0}details>summary::-webkit-details-marker{display:none}
  .toc a{color:#000}
  a{color:#1a3a0d;text-decoration:none}
  .m-foot{padding:10pt 0 0;border-top:1px solid #ccc;max-width:none}
}