@font-face{font-family:"Baloo 2";src:url("../fonts/baloo2-600.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Baloo 2";src:url("../fonts/baloo2-800.woff2") format("woff2");font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:"Source Sans 3";src:url("../fonts/source-sans3-400.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Source Sans 3";src:url("../fonts/source-sans3-600.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}

:root{
  --bg:#eef2f6; --ink:#18203a; --soft:#4a5573; --line:#cfd7e3; --panel:#ffffff;
  --film:#1c2540; --film-ink:#e9edf7; --hole:rgba(255,255,255,.6);
  --wax:#ffc83d; --no:#d6383f; --no-film:#ff9a9a; --yes:#1f8a5b;
  --display:"Baloo 2","Trebuchet MS","Segoe UI",sans-serif;
  --body:"Source Sans 3","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root{
    color-scheme:dark;
    --bg:#111728; --ink:#eef1f8; --soft:#aab3cc; --line:#2c3655; --panel:#1a2238;
    --film:#070b17; --hole:rgba(255,255,255,.35); --no:#ff8088; --yes:#5fd39e;
  }
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:env(safe-area-inset-top,0px);-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:1.0625rem;line-height:1.55}
.wrap{max-width:1060px;margin:0 auto;padding:0 max(20px,env(safe-area-inset-right,0px)) 0 max(20px,env(safe-area-inset-left,0px))}
h1,h2,h3{font-family:var(--display);line-height:1.08;margin:0}
h1{font-size:clamp(2.5rem,6.6vw,4.4rem);font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(1.8rem,4vw,2.5rem);font-weight:800}
h3{font-size:1.5rem;font-weight:600}
p{margin:0;max-width:62ch}
a{color:inherit;text-underline-offset:3px}
.lead{font-size:1.25rem;color:var(--soft);margin-top:18px;max-width:46ch}

.crumbs{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:center;padding:18px 0 0;font-weight:600;color:var(--soft)}
.crumbs a{color:var(--soft);text-decoration:none;border-bottom:2px solid var(--line)}
.crumbs a:hover{color:var(--ink);border-color:var(--wax)}
.crumbs span[aria-current]{color:var(--ink)}

.strip{position:relative;background:var(--film);color:var(--film-ink);padding:26px 16px;border-radius:6px}
.strip::before,.strip::after{content:"";position:absolute;left:12px;right:12px;height:8px;border-radius:2px;
  background:repeating-linear-gradient(90deg,var(--hole) 0 12px,transparent 12px 26px)}
.strip::before{top:9px}.strip::after{bottom:9px}
.strip>svg{display:block;width:100%;height:auto;border-radius:3px}

.hero{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,7fr);gap:40px;align-items:center;padding:40px 0 48px}
.head{padding:36px 0 20px;border-top:3px solid var(--ink)}
.head p{color:var(--soft);margin-top:6px}
.rule{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,8fr);gap:32px;align-items:center;padding:26px 0;border-top:1px solid var(--line)}
.rule p{margin-top:10px}

button{font:600 1rem var(--body);color:var(--ink);background:var(--panel);border:2px solid var(--ink);border-radius:999px;padding:9px 18px;cursor:pointer}
button[aria-pressed="true"]{background:var(--wax);color:#18203a;border-color:#18203a}
button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid var(--wax);outline-offset:3px}
button,input,label{touch-action:manipulation}

.wrap input[type=range]{-webkit-appearance:none;appearance:none;background:transparent;width:100%;height:44px;margin:0;cursor:pointer;accent-color:var(--wax)}
.wrap input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:4px;background:var(--line)}
.wrap input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:30px;height:30px;margin-top:-11px;border-radius:50%;background:var(--wax);border:3px solid var(--ink)}
.wrap input[type=range]::-moz-range-track{height:8px;border-radius:4px;background:var(--line)}
.wrap input[type=range]::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:var(--wax);border:3px solid var(--ink)}

.checks{list-style:none;margin:14px 0 0;padding:0}
.checks li{padding:4px 0;color:var(--soft)}
.checks li::before{content:"○  "}
.checks li.ok{color:var(--yes);font-weight:600}
.checks li.ok::before{content:"✓  "}
.win{font-family:var(--display);font-size:1.3rem;min-height:1.6em;margin-top:8px}

.cols{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding-bottom:40px}
.box{background:var(--panel);border-radius:10px;padding:24px 26px}
.box.never{border-left:8px solid var(--no)}
.box.oops{border-left:8px solid var(--wax)}
.box ul{margin:14px 0 0;padding-left:1.2em}
.box li{margin-bottom:10px;max-width:56ch}
.box li::marker{color:var(--soft)}

.tasks{list-style:none;margin:0;padding:0 0 12px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tasks label{display:flex;gap:14px;align-items:flex-start;background:var(--panel);border-radius:10px;padding:16px 18px;cursor:pointer;height:100%}
.tasks input{width:24px;height:24px;flex:none;margin:1px 0 0;accent-color:var(--yes)}
.tasks input:checked + span{color:var(--soft);text-decoration:line-through}
.score{display:flex;flex-wrap:wrap;gap:16px;align-items:center;padding:8px 0 44px;font-weight:600}

.parents{padding-bottom:40px}
.parents ul{margin:0;padding-left:1.2em;columns:2;column-gap:40px}
.parents li{margin-bottom:12px;break-inside:avoid}

.chapnav{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:28px 0 64px;border-top:3px solid var(--ink)}
.chapnav a{display:block;background:var(--panel);border-radius:10px;padding:18px 22px;text-decoration:none;border:2px solid transparent}
.chapnav a:hover{border-color:var(--wax)}
.chapnav small{display:block;color:var(--soft);font-weight:600}
.chapnav strong{display:block;font-family:var(--display);font-size:1.35rem;line-height:1.2;margin-top:2px}
.chapnav .dal{grid-column:2;text-align:right}

.chapters{list-style:none;margin:0;padding:0 0 40px;display:grid;grid-template-columns:1fr 1fr;gap:24px}
.chapter a{display:grid;grid-template-rows:auto 1fr;height:100%;background:var(--panel);border-radius:10px;overflow:hidden;text-decoration:none;border:2px solid transparent}
.chapter a:hover{border-color:var(--wax)}
.chapter .strip{border-radius:0}
.chapter .txt{padding:20px 24px 24px}
.chapter small{display:block;color:var(--soft);font-weight:600;font-size:1rem}
.chapter h2{font-size:clamp(1.6rem,3.4vw,2.1rem);margin-top:2px}
.chapter p{margin-top:10px}
.chapter .topics{margin-top:12px;color:var(--soft);font-weight:600}
.howto{padding-bottom:64px}
.howto ul{margin:0;padding-left:1.2em;columns:2;column-gap:40px}
.howto li{margin-bottom:12px;break-inside:avoid}
.foot{padding:0 0 48px;color:var(--soft)}

@media (max-width:760px){
  .chapters,.howto ul{grid-template-columns:1fr;columns:1}
  .hero,.rule,.cols{grid-template-columns:1fr}
  .hero{padding:28px 0 32px;gap:26px}
  .rule{gap:16px}
  .tasks{grid-template-columns:1fr}
  .parents ul{columns:1}
  .chapnav{grid-template-columns:1fr}
  .chapnav .dal{grid-column:1}
}
@media print{
  .no-print,.crumbs,.chapnav{display:none!important}
  body{background:#fff;color:#000;font-size:11pt}
  .rule{break-inside:avoid;padding:12px 0}
  .box,.tasks label{border:1px solid #999}
  .strip{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}