/* Layout: a trail-map pamphlet. A topo map you can play with sits at the centre; the story and field notes wrap around it.
   Single map-paper palette by choice. */
:root{
  --paper:#efe7d3; --paper-2:#e6dcc3; --ink:#2b2a22; --muted:#6c6450; --contour:#b5794a; --contour-soft:rgba(181,121,74,.35);
  --forest:#2e4a36; --trail:#c23b22; --sky:#d9e3df;
  --display:"Bitter",Rockwell,Georgia,serif; --body:"Karla",system-ui,sans-serif; --mono:"Courier Prime","Courier New",monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.6}
a{color:inherit}
:focus-visible{outline:2px solid var(--trail);outline-offset:3px;border-radius:3px}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);margin:0;line-height:1.02;text-wrap:balance}
p{margin:0}
.note{font-family:var(--mono);font-size:14px;letter-spacing:.02em;color:var(--muted)}

/* hero: a trail sign */
.hero{padding-block:clamp(40px,7vw,90px) clamp(28px,4vw,48px)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:clamp(28px,5vw,64px);align-items:center}
@media (max-width:880px){.hero .wrap{grid-template-columns:minmax(0,1fr)}}
.sign{background:var(--forest);color:#f3ead2;border-radius:10px;padding:clamp(22px,4vw,40px);box-shadow:inset 0 0 0 3px #f3ead2,inset 0 0 0 7px var(--forest),0 18px 30px -18px rgba(0,0,0,.5);position:relative}
.sign::before,.sign::after{content:"";position:absolute;top:14px;width:10px;height:10px;border-radius:50%;background:#c7b98f;box-shadow:inset 0 -2px 0 rgba(0,0,0,.3)}
.sign::before{left:16px}.sign::after{right:16px}
.sign h1{font-weight:900;font-size:clamp(50px,8.4vw,112px);letter-spacing:-.01em;text-transform:uppercase;line-height:.92}
.sign .elev{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-family:var(--mono);font-size:14px;margin-top:18px;border-top:2px solid rgba(243,234,210,.4);padding-top:12px}
.story{display:grid;gap:16px}
.story p{font-size:clamp(18px,1.7vw,21px)}
.story .quote{font-family:var(--display);font-weight:800;font-size:clamp(24px,2.6vw,32px);line-height:1.15}
.story .quote::before{content:"“"}.story .quote::after{content:"”"}

/* map */
section.map{padding-block:clamp(28px,4vw,48px) clamp(56px,7vw,88px)}
.map-card{background:var(--paper-2);border:2px solid var(--ink);border-radius:12px;overflow:hidden;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr)}
@media (max-width:880px){.map-card{grid-template-columns:minmax(0,1fr)}}
.map-card canvas{display:block;width:100%;height:100%;min-height:360px;background:var(--paper);border-right:2px solid var(--ink)}
@media (max-width:880px){.map-card canvas{border-right:0;border-bottom:2px solid var(--ink);aspect-ratio:4/3;height:auto;min-height:0}}
.panel{padding:clamp(20px,3vw,30px);display:grid;gap:20px;align-content:start}
.panel h2{font-size:clamp(26px,2.8vw,34px)}
.ctl{display:grid;gap:6px}
.ctl label{display:flex;justify-content:space-between;align-items:baseline;font-weight:700;font-size:16px}
.ctl output{font-family:var(--mono);font-weight:700;color:var(--trail);font-size:17px}
input[type=range]{width:100%;accent-color:var(--trail);min-height:32px}
.read{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.r{background:var(--paper);border:1.5px solid var(--ink);border-radius:8px;padding:10px 12px;display:grid;gap:2px}
.r span{font-family:var(--mono);font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.r b{font-family:var(--display);font-weight:900;font-size:28px;line-height:1;font-variant-numeric:tabular-nums}
.r.big{grid-column:1/-1;background:var(--forest);color:#f3ead2;border-color:var(--forest)}
.r.big span{color:#c8d3c2}
.r.big b{font-size:22px;line-height:1.2}
.presets{display:flex;flex-wrap:wrap;gap:8px}
.presets button{font:700 14px var(--body);border:1.5px solid var(--ink);background:var(--paper);border-radius:999px;padding:0 14px;min-height:40px;cursor:pointer}
.presets button:hover{background:var(--ink);color:var(--paper)}

/* math + notes */
.math{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,5vw,64px);align-items:start}
@media (max-width:880px){.math{grid-template-columns:minmax(0,1fr)}}
.math h2,.notes h2{font-size:clamp(32px,4vw,48px)}
.formula{font-family:var(--mono);font-size:clamp(20px,2.4vw,28px);background:var(--paper-2);border-left:6px solid var(--trail);padding:18px 20px;border-radius:0 8px 8px 0}
.math .col{display:grid;gap:16px}
.math p{color:var(--muted)}
.math p b{color:var(--ink)}
.scale{list-style:none;margin:0;padding:0;display:grid;gap:0;border-top:2px solid var(--ink)}
.scale li{display:grid;grid-template-columns:96px 1fr;gap:14px;padding:11px 0;border-bottom:1px dashed var(--contour)}
.scale b{font-family:var(--mono);font-size:16px;color:var(--trail)}
.notes{background:var(--forest);color:#f3ead2}
.notes .wrap{display:grid;gap:30px}
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media (max-width:980px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:540px){.cards{grid-template-columns:minmax(0,1fr)}}
.c{border:2px solid rgba(243,234,210,.5);border-radius:10px;padding:18px;display:grid;gap:8px;align-content:start}
.c h3{font-size:22px}
.c p{color:#d6dccd;font-size:16px}
.c .note{color:#b9c4b3}

.note.light{color:#c8d3c2}

/* ---------- site chrome ---------- */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:20;background:var(--paper)}
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(8px);border-bottom:2px solid var(--ink)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:900;font-size:20px;text-decoration:none;text-transform:uppercase;letter-spacing:.01em}
.blaze{width:14px;height:24px;background:var(--trail);border-radius:2px;transform:skewY(-20deg)}
header nav{display:flex;align-items:center;gap:20px;font-weight:700;font-size:16px}
header nav a{text-decoration:none}
header nav a:not(.btn):hover{color:var(--trail)}
@media (max-width:560px){header nav a:not(.btn){display:none}.brand{font-size:17px}}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:8px;border:2px solid var(--ink);background:var(--trail);color:#fff8ee;font:700 16px/1 var(--body);text-decoration:none;cursor:pointer;box-shadow:3px 3px 0 var(--ink);transition:transform .1s,box-shadow .1s}
.btn:hover{transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}
.btn.sm{min-height:40px;padding:0 14px;font-size:15px}
.btn.ghost{background:var(--paper);color:var(--ink)}
.btn.ghost.light{background:transparent;color:#f3ead2;border-color:#f3ead2;box-shadow:3px 3px 0 #f3ead2}
.btn[disabled]{opacity:.6;cursor:default}
.ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px}
section{padding-block:clamp(48px,6vw,84px)}
section.map{padding-top:0}
.sechead{display:grid;gap:10px;max-width:760px;margin-bottom:30px}
.sechead h2{font-size:clamp(32px,4vw,48px)}
.sechead p{color:var(--muted)}

/* ---------- cards ---------- */
.group{margin-bottom:40px}
.ghead{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.ghead p{color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.acard{display:grid;gap:8px;align-content:start;background:var(--paper-2);border:2px solid var(--ink);border-radius:10px;padding:16px 18px;text-decoration:none;box-shadow:4px 4px 0 var(--ink);transition:transform .12s,box-shadow .12s}
.acard:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.acard b{font-family:var(--display);font-weight:800;font-size:21px;line-height:1.15}
.acard .ang{font-family:var(--mono);font-size:14px;color:var(--trail)}
.grp{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:4px;justify-self:start;font-weight:700}
.g-effort{background:#d6e2d0;color:#24432f}.g-catch{background:#f2d6c9;color:#7d2a17}.g-sweet{background:#ecdfb4;color:#5b4710}.g-other{background:#e0dccf;color:#4b4638}
.myth-link{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:baseline;border:2px dashed var(--ink);border-radius:10px;padding:16px 18px;text-decoration:none}
.myth-link b{font-family:var(--display);font-size:20px}
.myth-link span{color:var(--muted)}
.band{background:var(--forest);color:#f3ead2}
.band .note{color:#c8d3c2}
.band .sechead p{color:#d6dccd}

/* ---------- problem page ---------- */
.prob{padding-block:clamp(28px,4vw,48px)}
.crumb{font-family:var(--mono);font-size:14px;color:var(--muted);margin-right:10px}
.prob-top{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:clamp(24px,4vw,48px);align-items:start;margin-bottom:40px}
@media (max-width:860px){.prob-top{grid-template-columns:minmax(0,1fr)}}
.lead{display:grid;gap:16px;align-content:start}
.prob h1{font-size:clamp(36px,5vw,62px);font-weight:900;margin-top:10px}
.the-angle{display:grid;gap:4px;background:var(--forest);color:#f3ead2;border-radius:10px;padding:14px 18px;font-family:var(--display);font-weight:800;font-size:clamp(20px,2.2vw,26px);line-height:1.2}
.the-angle span{font-family:var(--mono);font-weight:400;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:#c8d3c2}
.answer{font-size:clamp(18px,1.7vw,21px);max-width:62ch}
.short{margin:0;aspect-ratio:9/16;max-height:620px;width:100%;max-width:340px;justify-self:center;border:2px solid var(--ink);border-radius:14px;overflow:hidden;background:var(--ink)}
.short iframe{width:100%;height:100%;border:0;display:block}
.short.soon{display:grid;place-items:center;align-content:center;gap:10px;background:var(--forest);color:#f3ead2;text-align:center;padding:20px;max-height:440px}
.sign-mini{font-family:var(--display);font-weight:900;font-size:30px;border:3px solid #f3ead2;padding:4px 14px;border-radius:6px}
.short.soon .note{color:#c8d3c2}
.prob-body{display:grid;gap:36px;max-width:780px}
.prob-body h2{font-size:clamp(26px,3vw,34px);margin-bottom:12px}
.steps{margin:0;padding:0;list-style:none;counter-reset:s;display:grid;gap:10px}
.steps li{counter-increment:s;display:grid;grid-template-columns:40px 1fr;gap:12px;align-items:baseline}
.steps li::before{content:counter(s);font-family:var(--display);font-weight:900;font-size:22px;color:var(--trail);border:2px solid var(--trail);border-radius:50%;width:36px;height:36px;display:grid;place-items:center}
.calc{background:var(--paper-2);border:2px solid var(--ink);border-radius:12px;padding:20px;display:grid;gap:16px;box-shadow:5px 5px 0 var(--ink)}
.calc h2{margin:0}
.calc .read{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.faq{border-top:2px solid var(--ink)}
.faq details{border-bottom:1px dashed var(--contour);padding:12px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::after{content:"+";color:var(--trail);font-family:var(--mono);font-size:22px}
.faq details[open] summary::after{content:"–"}
.faq p{margin-top:8px;color:var(--muted)}
.sources ul{margin:0;padding-left:18px;color:var(--muted);font-size:16px}
.share-cta{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.share-cta h2{font-size:clamp(26px,3vw,36px)}
.share-cta p{color:#d6dccd}
.related h2{font-size:clamp(26px,3vw,34px);margin-bottom:16px}
.myths{display:grid;gap:18px;margin-top:28px;max-width:820px}
.myth{border:2px solid var(--ink);border-radius:10px;padding:18px 20px;display:grid;gap:8px;background:var(--paper-2)}
.myth h2{font-size:24px}

/* ---------- community ---------- */
.wall{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin:20px 0}
.item{background:var(--paper);color:var(--ink);border:2px solid var(--ink);border-radius:10px;padding:16px;display:grid;gap:8px;align-content:start}
.item.feat{box-shadow:5px 5px 0 var(--trail)}
.item b{font-family:var(--display);font-weight:800;font-size:19px;line-height:1.2}
.item p{font-size:16px}
.item .why{color:var(--muted);font-size:15px}
.item .meta{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;font-family:var(--mono);font-size:13px;color:var(--muted);border-top:1px dashed var(--contour);padding-top:8px}
.vote{font:700 14px var(--body);display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 12px;border:2px solid var(--ink);border-radius:999px;background:var(--paper-2);cursor:pointer}
.vote[aria-pressed="true"]{background:var(--trail);color:#fff8ee;border-color:var(--trail)}
.empty{color:inherit;opacity:.8}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip,.chips label{font:700 15px var(--body);min-height:40px;padding:0 14px;border:2px solid var(--ink);border-radius:999px;background:var(--paper);display:inline-flex;align-items:center;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.chips input{position:absolute;opacity:0;width:1px;height:1px}
.chips input:checked+label{background:var(--ink);color:var(--paper)}
.chips input:focus-visible+label{outline:2px solid var(--trail);outline-offset:2px}

/* ---------- forms ---------- */
.share{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(24px,4vw,56px);align-items:start}
@media (max-width:860px){.share{grid-template-columns:minmax(0,1fr)}}
.rules{margin:0;padding-left:18px;color:var(--muted)}
.form{background:var(--paper-2);border:2px solid var(--ink);border-radius:12px;padding:clamp(18px,3vw,26px);display:grid;gap:14px;box-shadow:6px 6px 0 var(--ink)}
.form.narrow{max-width:440px}
.form label,.form legend{display:grid;gap:6px;font-weight:700;font-size:16px}
.form fieldset{border:0;margin:0;padding:0;display:grid;gap:8px}
.opt{font-weight:400;color:var(--muted);font-size:14px}
.form input:not([type=radio]),.form textarea{font:inherit;font-size:16px;font-weight:400;color:var(--ink);background:var(--paper);border:2px solid var(--ink);border-radius:8px;padding:10px 12px;min-height:46px;width:100%}
.form textarea{min-height:90px;resize:vertical}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:560px){.row{grid-template-columns:1fr}}
.status{background:var(--paper);border:2px solid var(--ink);border-radius:8px;padding:10px 12px}
.qbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}
.mt{margin-top:32px;margin-bottom:12px}
.qitem{border:2px solid var(--ink);border-radius:10px;padding:14px;margin-bottom:12px;display:grid;gap:6px;background:var(--paper-2)}
.qitem .acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}

footer.foot{background:var(--ink);color:#d8d2bf;padding-block:36px;border:0;font-family:var(--body);font-size:16px}
footer.foot .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
footer.foot b{font-family:var(--display);font-size:22px;color:#f3ead2}
footer.foot nav{display:flex;flex-wrap:wrap;gap:8px 18px}
footer.foot a{text-decoration:none} footer.foot a:hover{color:#fff}
[id]{scroll-margin-top:80px}
.prob-body section{padding-block:0}
.short.soon{aspect-ratio:auto;min-height:220px;max-height:none}
@media (max-width:860px){.short{max-width:300px}.short.soon{max-width:100%;min-height:150px}}