:root {
    --sky-distant: #e8c9a0;
    --sky-near: #d4956b;
    --mountain-deep: #5c4a3a;
    --mountain-mid: #8b7b5e;
    --measurement-muted: #7a6b5d;
    --mountain-near: #a0704e;
    --valley-floor: #2c1e14;
    --text-primary: #3d2c1f;
    --accent: #c9882c;
    --highlight: #5a8a7a;
    --parchment: #faf3e8;
    --display: "Comic Sans MS", "Bradley Hand", cursive;
    --heading: "Impact", "Arial Narrow", fantasy;
    --body: "Trebuchet MS", "Segoe UI", sans-serif;
    --mono: "Courier New", monospace;
}

/* Compliance tokens: Interactive elements IntersectionObserver (threshold 0.15 */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--text-primary);
    background: var(--valley-floor);
    font-family: var(--body);
    overflow-x: hidden;
}

.site-shell { position: relative; min-height: 100vh; overflow: hidden; }
.sky {
    position: fixed;
    inset: 0;
    z-index: -8;
    background: linear-gradient(180deg, var(--sky-distant) 0%, var(--sky-near) 42%, var(--parchment) 76%, var(--mountain-mid) 100%);
    transition: filter .3s ease;
}
.dot-grid {
    position: fixed;
    inset: 0;
    z-index: -4;
    opacity: .7;
    pointer-events: none;
    background-image: radial-gradient(rgba(61,44,31,.16) 1px, transparent 1px);
    background-size: 18px 18px;
    mix-blend-mode: multiply;
}

.summit { min-height: 100vh; position: relative; display: grid; place-items: center; text-align: center; overflow: hidden; }
.mountain-stage { position: absolute; inset: 0; z-index: -2; pointer-events: none; }
.ridge { position: absolute; left: 0; bottom: -1px; width: 100%; height: 78%; will-change: transform; }
.ridge path { stroke: none; }
.ridge-1 { bottom: 26%; opacity: .52; } .ridge-1 path { fill: var(--sky-distant); }
.ridge-2 { bottom: 18%; opacity: .70; } .ridge-2 path { fill: var(--sky-near); }
.ridge-3 { bottom: 11%; opacity: .86; } .ridge-3 path { fill: var(--mountain-mid); }
.ridge-4 { bottom: 5%; opacity: .92; } .ridge-4 path { fill: var(--mountain-near); }
.ridge-5 { bottom: -6%; opacity: .97; } .ridge-5 path { fill: var(--mountain-deep); }
.ridge-6 { bottom: -14%; } .ridge-6 path { fill: var(--valley-floor); }
.tree-line { position: absolute; bottom: 5.5%; left: 0; width: 100%; height: 96px; }
.tree-line span { position: absolute; bottom: 0; width: 0; height: 0; border-left: 14px solid transparent; border-right: 14px solid transparent; border-bottom: 58px solid var(--text-primary); opacity: .72; }
.tree-line span:nth-child(1){left:8%; transform:scale(.75)} .tree-line span:nth-child(2){left:23%; transform:scale(1.05)} .tree-line span:nth-child(3){left:41%; transform:scale(.85)} .tree-line span:nth-child(4){left:63%; transform:scale(1.2)} .tree-line span:nth-child(5){left:76%; transform:scale(.7)} .tree-line span:nth-child(6){left:90%; transform:scale(.95)}

.title-block { width: min(880px, 90vw); padding: 10vh 2rem 22vh; }
.title-block h1 { margin: 0; color: var(--parchment); font: 700 clamp(4rem, 12vw, 8.8rem)/.85 var(--display); letter-spacing: .04em; text-shadow: 0 4px 0 rgba(61,44,31,.14); }
.tagline { max-width: 680px; margin: 1.2rem auto 0; color: var(--text-primary); font-size: clamp(1.05rem, 2vw, 1.35rem); line-height: 1.6; }
.annotation { margin: 0 0 .7rem; color: var(--mountain-deep); font: 700 1.35rem var(--display); opacity: .85; }
.tilt-left { transform: rotate(-3deg); } .tilt-right { transform: rotate(2.5deg); }
.scroll-cue { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); color: var(--accent); font: 700 13px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.scroll-cue i { display: block; width: 18px; height: 18px; margin: .65rem auto 0; border: solid var(--accent); border-width: 0 2px 2px 0; transform: rotate(45deg); animation: bob 1.7s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(8px) rotate(45deg); } }

main { position: relative; z-index: 2; }
.camp { min-height: 100vh; position: relative; display: grid; place-items: center; padding: 8rem 2rem; overflow: hidden; }
.camp:before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(61,44,31,.08) 1px, transparent 1px); background-size: 16px 16px; pointer-events: none; }
.camp-summit { background: rgba(250,243,232,.88); }
.camp-alpine { background: rgba(232,201,160,.94); }
.camp-forest { background: var(--mountain-mid); }
.camp-valley { background: var(--mountain-near); }
.basecamp { min-height: 78vh; display: grid; place-items: center; padding: 7rem 2rem; background: var(--valley-floor); color: var(--parchment); position: relative; }
.camp-copy, .base-copy { position: relative; width: min(680px, 92vw); margin-left: 40px; padding: 2.6rem 2.8rem; background: rgba(250,243,232,.92); box-shadow: -14px 14px 0 rgba(61,44,31,.12); }
.offset-left { margin-left: -40px; }
.camp-forest .camp-copy, .camp-valley .camp-copy, .base-copy { background: rgba(44,30,20,.88); color: var(--parchment); box-shadow: -14px 14px 0 rgba(201,136,44,.18); }
.camp-copy h2, .base-copy h2 { margin: .2rem 0 1rem; font: 900 clamp(2.6rem, 7vw, 4.5rem)/.9 var(--heading); letter-spacing: .12em; text-transform: uppercase; }
.camp-copy p:not(.meter):not(.annotation), .base-copy p:not(.meter) { font-size: 17px; line-height: 1.72; margin: 0 0 1.6rem; }
.meter { margin: 0 0 .5rem; color: var(--measurement-muted); font: 700 13px var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.camp-forest .meter, .camp-valley .meter, .base-copy .meter { color: var(--sky-distant); }
.contour-divider { position: absolute; top: -44px; left: 0; width: 100%; height: 90px; pointer-events: none; }
.contour-divider svg { width: 100%; height: 100%; overflow: visible; }
.contour-divider path { fill: none; stroke: var(--accent); stroke-width: 3; opacity: .3; stroke-linecap: round; stroke-dasharray: 1250; stroke-dashoffset: 1250; transition: stroke-dashoffset 1.2s cubic-bezier(.25,.1,.25,1); }
.reveal.in-view .contour-divider path { stroke-dashoffset: 0; }

.mini-chart { height: 160px; display: flex; align-items: flex-end; gap: 18px; padding: 1.4rem; background: rgba(201,136,44,.11); }
.mini-chart span { flex: 1; min-width: 30px; background: var(--accent); transform-origin: bottom; }
.contour-card { display: grid; gap: 18px; padding: 1.6rem; background: rgba(61,44,31,.07); }
.contour-card i { height: 3px; background: linear-gradient(90deg, transparent, var(--accent), transparent); border-radius: 50%; opacity: .65; }
.node-map { height: 190px; position: relative; margin-top: 1rem; }
.node-map span { position: absolute; width: 18px; height: 18px; border-radius: 50%; background: var(--sky-distant); box-shadow: 0 0 0 7px rgba(201,136,44,.22); }
.node-map span:nth-child(1){left:12%;top:26%}.node-map span:nth-child(2){left:34%;top:62%}.node-map span:nth-child(3){left:50%;top:22%}.node-map span:nth-child(4){left:72%;top:52%}.node-map span:nth-child(5){left:84%;top:18%}.node-map span:nth-child(6){left:20%;top:78%}
.node-map em { position: absolute; height: 2px; background: var(--accent); opacity: .55; transform-origin: left center; }
.node-map em:nth-of-type(1){left:15%;top:35%;width:190px;transform:rotate(32deg)}.node-map em:nth-of-type(2){left:38%;top:63%;width:245px;transform:rotate(-22deg)}.node-map em:nth-of-type(3){left:52%;top:30%;width:235px;transform:rotate(14deg)}

.icon-field { position: relative; height: 360px; margin-top: 2rem; }
.map-icon { position: absolute; width: 64px; height: 64px; background: var(--text-primary); color: var(--accent); opacity: 0; transform: translate(10px, 12px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in-view .map-icon { opacity: 1; transform: translate(0,0); }
.map-icon:nth-child(1){left:8%;top:18%;transition-delay:.05s}.map-icon:nth-child(2){left:39%;top:3%;transition-delay:.1s}.map-icon:nth-child(3){left:70%;top:20%;transition-delay:.15s}.map-icon:nth-child(4){left:18%;top:58%;transition-delay:.2s}.map-icon:nth-child(5){left:50%;top:50%;transition-delay:.25s}.map-icon:nth-child(6){left:82%;top:66%;transition-delay:.3s}.map-icon:nth-child(7){left:3%;top:76%;transition-delay:.35s}.map-icon:nth-child(8){left:61%;top:78%;transition-delay:.4s}
.icon-bars { display:flex; align-items:flex-end; gap:7px; padding:12px; } .icon-bars span{flex:1;background:var(--accent)} .icon-bars span:nth-child(1){height:35%}.icon-bars span:nth-child(2){height:75%}.icon-bars span:nth-child(3){height:55%}
.icon-pin { border-radius: 50% 50% 50% 0; transform: rotate(-45deg) translate(10px,12px); } .reveal.in-view .icon-pin { transform: rotate(-45deg); } .icon-pin:after{content:"";position:absolute;inset:20px;border-radius:50%;background:var(--accent)}
.icon-compass { border-radius:50%; } .icon-compass:before{content:"";position:absolute;inset:10px;clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%);background:var(--accent)}
.icon-ruler { height:28px; transform:rotate(-12deg); top:58%; } .icon-ruler:before{content:"";position:absolute;inset:8px 6px;background:repeating-linear-gradient(90deg,var(--accent) 0 3px,transparent 3px 9px)}
.icon-scatter span{position:absolute;width:9px;height:9px;border-radius:50%;background:var(--accent)}.icon-scatter span:nth-child(1){left:14px;top:40px}.icon-scatter span:nth-child(2){left:27px;top:20px}.icon-scatter span:nth-child(3){left:42px;top:31px}.icon-scatter span:nth-child(4){left:50px;top:12px}
.icon-peak { clip-path: polygon(50% 8%, 96% 88%, 4% 88%); } .icon-peak:after{content:"";position:absolute;left:26px;top:18px;width:18px;height:16px;background:var(--accent);clip-path:polygon(0 0,100% 0,55% 100%)}
.icon-axes:before,.icon-axes:after{content:"";position:absolute;background:var(--accent)}.icon-axes:before{left:14px;bottom:13px;width:40px;height:4px}.icon-axes:after{left:14px;bottom:13px;width:4px;height:40px}
.icon-tree { clip-path: polygon(50% 5%,80% 44%,65% 44%,90% 80%,56% 80%,56% 96%,44% 96%,44% 80%,10% 80%,35% 44%,20% 44%); }
.trail-markers { display: flex; justify-content: center; gap: 1rem; margin-top: 2rem; }
.trail-markers a { display: grid; place-items: center; width: 64px; height: 64px; border-radius: 50%; background: var(--accent); color: var(--parchment); text-decoration: none; font-size: 2rem; }

.reveal .camp-copy, .reveal .base-copy { opacity: 0; transform: translateY(20px); transition: opacity .4s ease, transform .4s ease; }
.reveal.in-view .camp-copy, .reveal.in-view .base-copy { opacity: 1; transform: translateY(0); }
.reveal h2, .reveal p, .reveal .mini-chart, .reveal .contour-card, .reveal .node-map, .reveal .icon-field, .reveal .trail-markers { transition: opacity .4s ease, transform .4s ease; }
.reveal:not(.in-view) h2, .reveal:not(.in-view) p, .reveal:not(.in-view) .mini-chart, .reveal:not(.in-view) .contour-card, .reveal:not(.in-view) .node-map, .reveal:not(.in-view) .icon-field, .reveal:not(.in-view) .trail-markers { opacity: 0; transform: translateY(20px); }
.reveal.in-view h2 { transition-delay: 0s; } .reveal.in-view p { transition-delay: .15s; } .reveal.in-view .mini-chart, .reveal.in-view .contour-card, .reveal.in-view .node-map, .reveal.in-view .icon-field, .reveal.in-view .trail-markers { transition-delay: .3s; }

.compass-rose { position: fixed; right: 22px; bottom: 22px; z-index: 20; width: 48px; height: 48px; padding: 4px; border: 0; background: transparent; cursor: pointer; opacity: .6; transition: opacity .25s ease; }
.compass-rose svg { width: 100%; height: 100%; fill: var(--accent); transition: transform 2s ease; filter: drop-shadow(0 2px 0 rgba(61,44,31,.2)); }
.compass-rose:hover { opacity: 1; } .compass-rose:hover svg { transform: rotate(360deg); }

@media (max-width: 720px) {
    .camp-copy, .base-copy { margin-left: 0; padding: 2rem 1.4rem; }
    .offset-left { margin-left: 0; }
    .icon-field { height: 430px; }
    .map-icon:nth-child(n) { transform: scale(.86); }
    .title-block h1 { font-size: clamp(3.4rem, 18vw, 5rem); }
}