:root {
  --selva: #23483c;
  --selva-deep: #15372f;
  --musgo: #6e8060;
  --arena: #d8c5a2;
  --terracota: #c76b4f;
  --marfil: #f4f0e7;
  --carbon: #252522;
  --rio: #3f7180;
  --ink-soft: #68675f;
  --line: rgba(37, 37, 34, .18);
  --line-light: rgba(244, 240, 231, .2);
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Manrope', Arial, sans-serif;
  --space: clamp(82px, 10vw, 150px);
  --rail: 274px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--carbon); background: var(--marfil); font-family: var(--sans); font-size: 15px; line-height: 1.55; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
::selection { background: var(--terracota); color: var(--marfil); }
:focus-visible { outline: 3px solid var(--terracota); outline-offset: 4px; }

.skip-link { position: fixed; left: 16px; top: -60px; z-index: 50; padding: 10px 15px; background: var(--terracota); color: var(--marfil); font-size: 12px; }
.skip-link:focus { top: 16px; }
.archive-rail { position: fixed; z-index: 20; inset: 0 auto 0 0; width: var(--rail); display: flex; flex-direction: column; padding: 32px 24px 25px; background: var(--selva); color: var(--marfil); }
.archive-brand, .mobile-brand { display: inline-flex; align-items: center; gap: 11px; letter-spacing: .14em; font-size: 11px; line-height: 1.15; }
.archive-brand b, .mobile-brand b { display: block; font-weight: 800; }
.archive-brand em, .mobile-brand em { display: block; color: var(--arena); font-family: var(--serif); font-size: 17px; letter-spacing: -.02em; }
.brand-mark { position: relative; display: inline-flex; flex-direction: column; justify-content: center; gap: 3px; width: 28px; height: 29px; }
.brand-mark i { display: block; width: 28px; height: 5px; border-top: 1.5px solid currentColor; border-radius: 50%; transform: rotate(-8deg); }
.brand-mark i:nth-child(2) { transform: translateX(3px) rotate(-8deg); }
.brand-mark i:nth-child(3) { transform: translateX(6px) rotate(-8deg); }
.rail-rule { width: 100%; margin: 37px 0 28px; border-top: 1px solid var(--line-light); }
.rail-label, .eyebrow { margin: 0; color: var(--terracota); font-size: 10px; font-weight: 800; letter-spacing: .17em; line-height: 1.4; text-transform: uppercase; }
.rail-label { color: var(--arena); margin-bottom: 13px; }
.chapter-nav { display: grid; gap: 4px; }
.chapter-link { display: flex; align-items: center; gap: 12px; padding: 13px 11px; border: 1px solid transparent; color: rgba(244,240,231,.65); transition: .2s ease; }
.chapter-link span { color: var(--arena); font-size: 10px; font-weight: 800; }
.chapter-link b { font-size: 12px; font-weight: 600; }
.chapter-link:hover, .chapter-link.active { border-color: rgba(216,197,162,.35); background: rgba(244,240,231,.08); color: var(--marfil); }
.chapter-link.active { box-shadow: inset 3px 0 0 var(--terracota); }
.rail-question { margin-top: auto; padding: 16px 15px 14px; border: 1px solid rgba(244,240,231,.2); background: rgba(0,0,0,.11); }
.question-mark { display: block; margin-bottom: 9px; color: var(--arena); }
.rail-question p { margin: 0; color: rgba(244,240,231,.72); font-size: 11px; line-height: 1.45; }
.rail-question strong { display: block; margin-bottom: 6px; color: var(--marfil); font-size: 10px; letter-spacing: .13em; text-transform: uppercase; }
.rail-footer { margin-top: 18px; color: rgba(244,240,231,.5); font-size: 9px; letter-spacing: .07em; }
.live-dot { display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: #97bd8a; }
.mobile-topbar { display: none; }
.site-main { margin-left: var(--rail); overflow: hidden; }
.section-pad { width: min(1160px, calc(100% - 116px)); margin: 0 auto; }

.hero { position: relative; min-height: 700px; display: grid; grid-template-columns: minmax(300px, .92fr) minmax(350px, 1.08fr); align-items: center; gap: 40px; background: var(--marfil); }
.hero:after { position: absolute; right: 0; bottom: 0; left: 0; height: 1px; background: var(--line); content: ''; }
.hero-copy { position: relative; z-index: 2; padding: 104px 0 96px; }
.hero .eyebrow { margin-bottom: 26px; }
.hero h1 { max-width: 650px; margin: 0 0 32px; color: var(--selva); font: 600 clamp(78px, 10.5vw, 155px)/.78 var(--serif); letter-spacing: -.09em; }
.hero h1 em, h2 em, h3 em, .closing-section em { color: var(--terracota); font-style: normal; }
.hero-intro { max-width: 410px; margin: 0; color: var(--ink-soft); font-size: clamp(16px, 1.6vw, 20px); }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 42px; }
.button, .secondary-button, .inline-button { border: 0; }
.button { display: inline-flex; align-items: center; gap: 21px; padding: 15px 19px; font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; transition: transform .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--terracota); color: var(--marfil); }
.button-primary:hover { background: #b95d43; }
.text-link { display: inline-flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--line); padding: 0 0 7px; font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.text-link span { color: var(--terracota); font-size: 16px; }
.hero-art { position: relative; min-height: 458px; margin: 40px 0; overflow: hidden; border-radius: 3px; background: #cbded5; }
.hero-art:before { position: absolute; inset: 0; background: linear-gradient(145deg, rgba(244,240,231,.25), transparent 50%); content: ''; }
.orbit { position: absolute; border: 1px solid rgba(35,72,60,.25); border-radius: 50%; transform: rotate(-17deg); }
.orbit-one { width: 530px; height: 190px; top: 105px; left: -45px; }
.orbit-two { width: 600px; height: 240px; top: 50px; left: -65px; }
.orbit-three { width: 720px; height: 300px; top: -15px; left: -100px; }
.deep-earth { position: absolute; top: 108px; left: 50%; display: flex; width: 235px; height: 235px; transform: translateX(-48%); flex-direction: column; align-items: center; justify-content: center; border-radius: 50%; background: radial-gradient(circle at 35% 28%, #f3b170, #d17451 58%, #b45643); color: var(--marfil); box-shadow: 0 14px 35px rgba(82,68,50,.2); }
.deep-earth span { font: 500 66px/.8 var(--serif); letter-spacing: -.07em; }
.deep-earth small { margin-top: 12px; font-size: 8px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.art-note { position: absolute; z-index: 2; display: flex; flex-direction: column; width: 146px; padding: 13px 15px; background: rgba(244,240,231,.94); box-shadow: 0 12px 25px rgba(35,72,60,.1); transform: rotate(3deg); }
.art-note small { color: var(--terracota); font-size: 8px; font-weight: 800; letter-spacing: .1em; }
.art-note b { margin: 6px 0 2px; color: var(--selva); font: 600 17px/.95 var(--serif); }
.art-note span { color: var(--ink-soft); font-size: 8px; }
.note-sample { top: 73px; right: 11%; }
.note-record { right: 7%; bottom: 74px; transform: rotate(-4deg); }
.art-caption { position: absolute; right: 20px; bottom: 16px; left: 20px; margin: 0; color: rgba(35,72,60,.7); font-size: 9px; letter-spacing: .08em; }
.mini-dot { display: inline-block; width: 5px; height: 5px; margin-right: 7px; border-radius: 50%; background: var(--terracota); }
.hero-footnote { position: absolute; right: 0; bottom: 21px; left: 0; display: flex; justify-content: flex-end; gap: 28px; color: var(--ink-soft); font-size: 10px; }
.explorer-chip b { display: inline-grid; width: 23px; height: 23px; margin-right: 6px; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--selva); font-size: 8px; }

.intro-band { background: var(--selva); color: var(--marfil); }
.intro-grid { display: grid; grid-template-columns: .7fr 1.6fr .7fr; gap: 40px; padding-top: 110px; padding-bottom: 105px; }
.intro-question { color: var(--arena); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.intro-question p { margin: 0; }
.intro-question b { color: var(--marfil); }
.stamp-number { display: inline-flex; align-items: center; justify-content: center; width: 31px; height: 31px; margin-bottom: 19px; border: 1px solid rgba(216,197,162,.7); border-radius: 50%; color: var(--arena); }
.intro-statement h2 { margin: 0 0 24px; font: 600 clamp(48px, 6.2vw, 82px)/.9 var(--serif); letter-spacing: -.065em; }
.intro-statement p { max-width: 450px; margin: 0; color: rgba(244,240,231,.68); font-size: 16px; }
.intro-aside { align-self: end; padding-bottom: 4px; color: var(--arena); }
.intro-aside span { display: block; font-size: 9px; font-weight: 800; letter-spacing: .13em; }
.intro-aside b { display: block; margin-top: 19px; color: var(--marfil); font: 500 91px/.75 var(--serif); letter-spacing: -.08em; }
.intro-aside small { display: block; margin-top: 8px; color: rgba(244,240,231,.55); font-size: 10px; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding-top: 25px; padding-bottom: 37px; border-top: 1px solid var(--line-light); }
.stat-row div { display: flex; flex-direction: column; gap: 3px; }
.stat-row b { color: var(--marfil); font: 500 29px/1 var(--serif); }
.stat-row span { color: rgba(244,240,231,.55); font-size: 10px; }

.timeline-section { padding-top: var(--space); padding-bottom: var(--space); background: var(--marfil); }
.section-heading { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); column-gap: 80px; align-items: end; margin-bottom: 65px; }
.section-heading .eyebrow { grid-column: 1 / -1; margin-bottom: 22px; }
.section-heading h2 { grid-column: 1; margin: 0; color: var(--selva); font: 600 clamp(48px, 6.2vw, 84px)/.9 var(--serif); letter-spacing: -.07em; }
.section-heading > p:last-child { grid-column: 2; max-width: 375px; margin: 0 0 4px; color: var(--ink-soft); font-size: 15px; }
.timeline-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 40px; align-items: stretch; }
.timeline-list { display: grid; align-content: start; }
.time-card { position: relative; display: grid; grid-template-columns: 45px 1fr; gap: 5px 15px; padding: 18px 15px 19px 0; border: 0; border-top: 1px solid var(--line); background: transparent; color: var(--carbon); text-align: left; }
.time-card:last-child { border-bottom: 1px solid var(--line); }
.time-card:before { position: absolute; top: -1px; bottom: -1px; left: -16px; width: 3px; background: transparent; content: ''; }
.time-card span { grid-row: span 3; color: var(--terracota); font-size: 10px; font-weight: 800; }
.time-card b { color: var(--terracota); font-size: 10px; letter-spacing: .06em; }
.time-card strong { font: 600 23px/.98 var(--serif); letter-spacing: -.03em; }
.time-card em { color: var(--ink-soft); font-size: 11px; font-style: normal; }
.time-card:hover strong, .time-card.is-selected strong { color: var(--terracota); }
.time-card.is-selected:before { background: var(--terracota); }
.timeline-detail { display: flex; flex-direction: column; min-height: 540px; padding: 25px 28px 25px; background: var(--selva); color: var(--marfil); }
.detail-top { display: flex; justify-content: space-between; color: var(--arena); font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.detail-visual { position: relative; height: 170px; margin: 15px -28px 25px; overflow: hidden; background: #8c9f8a; }
.detail-visual:before { position: absolute; inset: 0; background: repeating-linear-gradient(165deg, transparent 0 31px, rgba(244,240,231,.28) 32px 34px, transparent 35px 56px); content: ''; transform: rotate(-5deg) scale(1.1); }
.sediment { position: absolute; right: 15%; left: 8%; height: 40px; border-radius: 50%; opacity: .8; }
.sediment-a { top: 31px; background: var(--arena); transform: rotate(-8deg); }
.sediment-b { top: 78px; background: var(--terracota); transform: rotate(-4deg); }
.sediment-c { top: 120px; background: var(--rio); transform: rotate(-11deg); }
.fossil-mark { position: absolute; top: 57px; left: 50%; color: var(--marfil); font: 500 54px var(--serif); transform: rotate(24deg); }
.timeline-detail .eyebrow { color: var(--arena); }
.timeline-detail h3 { max-width: 540px; margin: 10px 0 12px; font: 600 clamp(34px, 4vw, 52px)/.92 var(--serif); letter-spacing: -.05em; }
.timeline-detail > p:not(.eyebrow) { max-width: 620px; margin: 0; color: rgba(244,240,231,.73); font-size: 14px; }
.detail-footer { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-top: auto; padding-top: 28px; border-top: 1px solid var(--line-light); color: rgba(244,240,231,.64); font-size: 11px; }
.detail-footer b { color: var(--arena); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.inline-button { padding: 0 0 6px; border-bottom: 1px solid rgba(244,240,231,.4); background: transparent; color: var(--marfil); font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; }
.inline-button span { margin-left: 10px; color: var(--terracota); font-size: 15px; }

.atlas-section { padding-top: var(--space); padding-bottom: var(--space); background: var(--arena); }
.atlas-heading h2 { color: var(--selva); }
.atlas-heading > p:last-child { color: rgba(37,37,34,.67); }
.atlas-toolbar { display: flex; align-items: start; justify-content: space-between; gap: 30px; margin-bottom: 32px; }
.search-field { display: flex; align-items: center; width: min(300px,100%); gap: 10px; border-bottom: 1px solid var(--carbon); padding-bottom: 9px; color: var(--terracota); }
.search-field span { font-size: 25px; line-height: .6; }
.search-field input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--carbon); font-size: 12px; }
.search-field input::placeholder { color: rgba(37,37,34,.55); }
.filter-list { display: flex; flex-wrap: wrap; justify-content: end; gap: 7px; }
.filter-button { padding: 7px 11px; border: 1px solid rgba(37,37,34,.28); background: transparent; color: var(--carbon); font-size: 10px; font-weight: 700; }
.filter-button:hover, .filter-button.is-active { border-color: var(--selva); background: var(--selva); color: var(--marfil); }
.atlas-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.atlas-card { display: flex; min-height: 185px; flex-direction: column; padding: 18px; border: 1px solid rgba(37,37,34,.18); background: rgba(244,240,231,.6); text-align: left; transition: transform .2s, background .2s; }
.atlas-card:hover, .atlas-card:focus-visible { background: var(--marfil); transform: translateY(-3px); }
.atlas-card-top { display: flex; justify-content: space-between; gap: 12px; color: var(--terracota); font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.atlas-card-icon { font-size: 21px; }
.atlas-card h3 { margin: auto 0 8px; color: var(--selva); font: 600 24px/.96 var(--serif); letter-spacing: -.035em; }
.atlas-card p { margin: 0; color: var(--ink-soft); font-size: 11px; line-height: 1.45; }
.atlas-card:after { display: block; margin-top: 15px; color: var(--terracota); content: 'Abrir ficha ↗'; font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.empty-state { margin: 30px 0 0; color: var(--ink-soft); }
.field-note { display: grid; grid-template-columns: 50px 1.2fr .8fr; gap: 25px; margin-top: 46px; padding: 29px 30px; border: 1px solid rgba(37,37,34,.22); background: var(--marfil); }
.field-note-mark { color: var(--terracota); font: 500 48px/1 var(--serif); }
.field-note > div:nth-child(2) > span { color: var(--terracota); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.field-note h3 { margin: 13px 0 10px; color: var(--selva); font: 600 34px/.94 var(--serif); letter-spacing: -.045em; }
.field-note p { max-width: 500px; margin: 0; color: var(--ink-soft); font-size: 13px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 19px; }
.tag-list span { padding: 4px 7px; background: var(--arena); color: var(--selva); font-size: 9px; }
.field-links { display: flex; flex-direction: column; align-items: start; gap: 8px; border-left: 1px solid var(--line); padding-left: 25px; }
.field-links > span { margin-bottom: 5px; color: var(--ink-soft); font-size: 10px; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.field-links button { border: 0; border-bottom: 1px solid var(--line); padding: 0 0 4px; background: transparent; color: var(--selva); font: 600 15px var(--serif); text-align: left; }
.field-links button:hover { color: var(--terracota); }
.connections { margin-top: 110px; }
.connections-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 60px; margin-bottom: 28px; }
.connections-heading .eyebrow { grid-column: 1 / -1; }
.connections-heading h3 { margin: 0; color: var(--selva); font: 600 clamp(35px, 4.5vw, 57px)/.9 var(--serif); letter-spacing: -.05em; }
.connections-heading > p:last-child { max-width: 340px; margin: 0; color: var(--ink-soft); font-size: 13px; align-self: end; }
.connection-map { position: relative; min-height: 380px; border: 1px solid rgba(37,37,34,.18); background: rgba(244,240,231,.38); }
.map-line { position: absolute; z-index: 0; display: block; border-top: 1px dashed rgba(63,113,128,.65); transform-origin: left center; }
.line-a { top: 43%; left: 21%; width: 61%; transform: rotate(-19deg); }.line-b { top: 47%; left: 22%; width: 57%; transform: rotate(20deg); }.line-c { top: 48%; left: 45%; width: 42%; transform: rotate(-3deg); }.line-d { top: 30%; left: 24%; width: 37%; transform: rotate(48deg); }
.connection-node { position: absolute; z-index: 1; display: flex; min-width: 145px; max-width: 205px; flex-direction: column; align-items: start; gap: 3px; padding: 12px; border: 1px solid var(--line); background: var(--marfil); color: var(--selva); text-align: left; box-shadow: 0 6px 15px rgba(37,37,34,.04); transition: .2s ease; }
.connection-node:hover, .connection-node.is-selected { border-color: var(--terracota); background: #fffaf1; transform: translateY(-3px); }
.connection-node i { color: var(--terracota); font-size: 20px; font-style: normal; }.connection-node b { font: 600 15px/.98 var(--serif); letter-spacing: -.02em; }.connection-node small { color: var(--ink-soft); font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.node-corteza { top: 30px; left: 8%; }.node-pangea { top: 25px; left: 43%; }.node-mar { top: 42%; left: 37%; }.node-andes { right: 8%; bottom: 26px; }.node-amonita { bottom: 40px; left: 12%; }.node-erosion { top: 45%; right: 8%; }
.connection-readout { display: grid; grid-template-columns: .4fr 1fr 1.2fr; gap: 20px; align-items: center; padding: 19px 0 0; }
.connection-readout span { color: var(--terracota); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }.connection-readout h4 { margin: 0; color: var(--selva); font: 600 23px/.95 var(--serif); }.connection-readout p { margin: 0; color: var(--ink-soft); font-size: 12px; }

.challenge-section { padding-top: var(--space); padding-bottom: var(--space); background: var(--selva-deep); color: var(--marfil); }
.challenge-heading h2 { color: var(--marfil); }.challenge-heading > p:last-child { color: rgba(244,240,231,.67); }
.challenge-shell { padding: 27px; border: 1px solid rgba(244,240,231,.2); background: var(--selva); }
.challenge-top { display: flex; align-items: end; justify-content: space-between; gap: 30px; padding-bottom: 24px; border-bottom: 1px solid var(--line-light); }.challenge-top h3 { margin: 11px 0 0; color: var(--marfil); font: 600 30px/.95 var(--serif); }.challenge-top .eyebrow { color: var(--arena); }
.score-box { min-width: 160px; }.score-box > span { display: block; color: rgba(244,240,231,.55); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }.score-box > b { display: block; margin: 2px 0 6px; color: var(--arena); font: 500 28px/.9 var(--serif); }.progress-track { height: 4px; background: rgba(244,240,231,.17); }.progress-track i { display: block; width: 16.66%; height: 100%; background: var(--terracota); transition: width .3s ease; }
.challenge-tabs { display: flex; flex-wrap: wrap; gap: 5px; padding: 18px 0; }.challenge-tab { display: inline-flex; align-items: center; gap: 7px; padding: 8px 10px; border: 1px solid transparent; background: transparent; color: rgba(244,240,231,.56); font-size: 9px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }.challenge-tab span { color: var(--arena); }.challenge-tab:hover, .challenge-tab.is-active { border-color: rgba(216,197,162,.5); color: var(--marfil); }.challenge-tab.is-complete span { color: #a4c18e; }
.challenge-pane { display: none; grid-template-columns: 1.05fr .95fr; gap: 34px; align-items: center; min-height: 300px; padding: 28px 4px; border-top: 1px solid var(--line-light); }.challenge-pane.is-active { display: grid; }.challenge-prompt > span { color: var(--arena); font-size: 9px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }.challenge-prompt h4 { margin: 14px 0 13px; color: var(--marfil); font: 600 clamp(34px, 4.2vw, 56px)/.92 var(--serif); letter-spacing: -.055em; }.challenge-prompt p { max-width: 460px; margin: 0; color: rgba(244,240,231,.68); font-size: 13px; }.sample-visual, .landscape-visual, .tectonic-visual, .evidence-card, .species-card { min-height: 220px; }.sample-layers { position: relative; display: flex; flex-direction: column; justify-content: end; gap: 10px; padding: 25px; overflow: hidden; background: #9e8768; }.sample-layers:before { position: absolute; inset: 0; background: repeating-linear-gradient(-8deg, transparent 0 19px, rgba(244,240,231,.35) 20px 23px, transparent 24px 45px); content: ''; }.sample-layers i { position: relative; z-index: 1; display: block; height: 19px; border-radius: 50%; }.sample-layers i:nth-child(1) { width: 70%; background: var(--marfil); }.sample-layers i:nth-child(2) { width: 88%; background: var(--terracota); }.sample-layers i:nth-child(3) { width: 61%; background: var(--arena); }.sample-layers i:nth-child(4) { width: 91%; background: var(--rio); }.sample-layers span { position: absolute; top: 17px; right: 18px; color: var(--marfil); font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }.choice { min-height: 51px; padding: 12px; border: 1px solid rgba(244,240,231,.28); background: rgba(244,240,231,.06); color: var(--marfil); font-size: 11px; text-align: left; transition: .2s ease; }.choice:hover { border-color: var(--arena); background: rgba(244,240,231,.12); }.choice.is-correct { border-color: #a4c18e; background: rgba(164,193,142,.2); }.choice.is-wrong { border-color: var(--terracota); background: rgba(199,107,79,.22); }
.evidence-card, .species-card { display: flex; flex-direction: column; justify-content: center; padding: 30px; background: var(--rio); }.evidence-card b { color: var(--arena); font: 500 82px/.7 var(--serif); }.evidence-card span { margin-top: 19px; color: var(--marfil); font: 600 38px/.9 var(--serif); }.evidence-card small, .species-card small { margin-top: 10px; color: rgba(244,240,231,.67); font-size: 11px; }.landscape-visual { position: relative; overflow: hidden; background: #b7c7b0; }.landscape-visual:before { position: absolute; right: -10%; bottom: 0; left: -10%; height: 48%; background: var(--musgo); clip-path: polygon(0 100%, 0 58%, 17% 26%, 30% 51%, 44% 12%, 62% 50%, 77% 19%, 100% 59%, 100% 100%); content: ''; }.mountain { position: absolute; z-index: 1; bottom: 22%; width: 0; height: 0; border-right: 90px solid transparent; border-bottom: 135px solid var(--selva); border-left: 90px solid transparent; }.mountain-one { left: 11%; }.mountain-two { right: 16%; border-right-width: 120px; border-bottom-color: #376554; border-left-width: 120px; }.strata { position: absolute; z-index: 2; right: 0; bottom: 12%; left: 0; height: 31px; border-top: 4px solid var(--terracota); border-bottom: 4px solid var(--arena); transform: rotate(-7deg); }.landscape-visual span { position: absolute; z-index: 3; top: 15px; left: 17px; color: var(--selva); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }.species-card { background: var(--terracota); }.species-card span { color: var(--arena); font-size: 9px; font-weight: 800; letter-spacing: .12em; }.species-card b { margin-top: 20px; color: var(--marfil); font: 600 54px/.85 var(--serif); letter-spacing: -.06em; }.tectonic-visual { position: relative; overflow: hidden; background: #6c8e82; }.tectonic-visual:before, .tectonic-visual:after { position: absolute; bottom: 22%; width: 64%; height: 90px; background: var(--arena); content: ''; }.tectonic-visual:before { left: -25%; transform: skewX(-22deg) rotate(-8deg); }.tectonic-visual:after { right: -25%; background: var(--terracota); transform: skewX(22deg) rotate(8deg); }.tectonic-visual i { position: absolute; z-index: 1; top: 35%; width: 28%; height: 3px; background: var(--marfil); }.tectonic-visual i:first-child { left: 25%; transform: rotate(17deg); }.tectonic-visual i:nth-child(2) { right: 25%; transform: rotate(-17deg); }.tectonic-visual span { position: absolute; top: 18px; left: 20px; color: var(--marfil); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.order-board { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }.order-card { display: flex; min-height: 88px; flex-direction: column; align-items: start; justify-content: center; gap: 4px; padding: 13px; border: 1px solid rgba(244,240,231,.28); background: rgba(244,240,231,.06); color: var(--marfil); text-align: left; }.order-card b { color: var(--arena); font-size: 10px; }.order-card span { font: 600 17px/.95 var(--serif); }.order-card small { color: rgba(244,240,231,.6); font-size: 10px; }.order-card.is-picked { border-color: var(--terracota); background: rgba(199,107,79,.2); }.order-card.is-locked { opacity: .45; }.undo-order { margin-top: 13px; border: 0; border-bottom: 1px solid rgba(244,240,231,.3); padding: 0 0 5px; background: transparent; color: var(--arena); font-size: 10px; font-weight: 800; }.undo-order:disabled { opacity: .35; cursor: not-allowed; }
.challenge-feedback { display: flex; align-items: center; gap: 13px; min-height: 57px; margin-top: 11px; padding: 12px 14px; border: 1px solid rgba(244,240,231,.18); background: rgba(0,0,0,.1); }.feedback-icon { color: var(--arena); font-size: 20px; }.challenge-feedback p { margin: 0; color: rgba(244,240,231,.72); font-size: 11px; }.challenge-feedback.is-good { border-color: rgba(164,193,142,.65); }.challenge-feedback.is-good .feedback-icon { color: #a4c18e; }.challenge-feedback.is-wrong { border-color: rgba(199,107,79,.7); }.challenge-actions { display: flex; justify-content: space-between; gap: 20px; margin-top: 16px; }.secondary-button { border-bottom: 1px solid rgba(244,240,231,.4); padding: 0 0 6px; background: transparent; color: rgba(244,240,231,.68); font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }.secondary-button:hover { color: var(--marfil); }.button:disabled { opacity: .38; cursor: not-allowed; transform: none; }

.closing-section { padding-top: var(--space); padding-bottom: var(--space); background: var(--terracota); color: var(--marfil); }.closing-mark { margin-bottom: 35px; color: var(--arena); font: 600 25px var(--serif); letter-spacing: -.1em; }.closing-section .eyebrow { color: var(--arena); }.closing-section h2 { margin: 20px 0 22px; font: 600 clamp(54px, 7vw, 96px)/.87 var(--serif); letter-spacing: -.07em; }.closing-section > p:not(.eyebrow) { max-width: 450px; margin-bottom: 34px; color: rgba(244,240,231,.78); }.closing-section .text-link { border-color: rgba(244,240,231,.42); }.closing-section .text-link span { color: var(--arena); }
.site-footer { display: flex; justify-content: space-between; gap: 25px; margin-left: var(--rail); padding: 28px max(58px, calc((100% - 1160px) / 2)); background: var(--carbon); color: rgba(244,240,231,.58); font-size: 10px; }.site-footer div { display: flex; gap: 25px; }.site-footer strong { color: var(--marfil); letter-spacing: .1em; text-transform: uppercase; }

@media (max-width: 1100px) { :root { --rail: 230px; }.section-pad { width: min(100% - 70px, 1000px); }.hero { grid-template-columns: .9fr 1.1fr; }.hero h1 { font-size: clamp(70px, 10vw, 125px); }.site-footer { margin-left: var(--rail); padding-right: 35px; padding-left: 35px; } }
@media (max-width: 820px) { .archive-rail { display: none; }.mobile-topbar { position: sticky; z-index: 30; top: 0; display: flex; min-height: 65px; align-items: center; justify-content: space-between; padding: 0 20px; background: rgba(244,240,231,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }.mobile-brand { color: var(--selva); font-size: 9px; }.mobile-brand em { color: var(--terracota); font-size: 14px; }.mobile-menu { border: 1px solid var(--line); padding: 7px 9px; background: transparent; color: var(--carbon); font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }.mobile-menu span { color: var(--terracota); font-size: 14px; }.mobile-nav { position: absolute; top: 65px; right: 0; left: 0; display: none; padding: 7px 20px 13px; background: var(--marfil); border-bottom: 1px solid var(--line); }.mobile-nav.open { display: grid; }.mobile-nav a { display: flex; justify-content: space-between; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 11px; }.mobile-nav span { color: var(--terracota); font-size: 10px; }.site-main { margin-left: 0; }.site-footer { margin-left: 0; padding: 25px 20px; }.section-pad { width: min(100% - 40px, 680px); }.hero { display: block; min-height: 0; padding-top: 75px; }.hero-copy { padding: 0 0 52px; }.hero h1 { font-size: clamp(76px, 20vw, 132px); }.hero-art { min-height: 380px; margin: 0 0 63px; }.hero-footnote { right: 0; bottom: 20px; left: 0; justify-content: space-between; }.intro-grid { display: block; padding-top: 78px; padding-bottom: 80px; }.intro-statement { margin-top: 45px; }.intro-aside { margin-top: 47px; }.stat-row { grid-template-columns: 1fr 1fr; }.section-heading { display: block; }.section-heading h2 { margin-bottom: 25px; }.section-heading > p:last-child { max-width: 430px; }.timeline-layout { display: block; }.timeline-detail { margin-top: 35px; }.atlas-toolbar { display: block; }.filter-list { justify-content: start; margin-top: 25px; }.atlas-grid { grid-template-columns: 1fr 1fr; }.field-note { grid-template-columns: 35px 1fr; }.field-links { grid-column: 2; border-top: 1px solid var(--line); border-left: 0; padding-top: 20px; padding-left: 0; }.connection-map { min-height: 510px; }.node-corteza { top: 25px; left: 5%; }.node-pangea { top: 25px; right: 5%; left: auto; }.node-mar { top: 40%; left: 29%; }.node-andes { right: 5%; bottom: 25px; }.node-amonita { bottom: 25px; left: 5%; }.node-erosion { top: 59%; right: 5%; }.connection-readout { grid-template-columns: 1fr 1fr; }.connection-readout p { grid-column: 1 / -1; }.challenge-pane { grid-template-columns: 1fr; }.challenge-pane .choice-grid { order: 3; }.challenge-pane .sample-visual, .challenge-pane .landscape-visual, .challenge-pane .evidence-card, .challenge-pane .species-card, .challenge-pane .tectonic-visual { min-height: 190px; }.challenge-prompt h4 { font-size: 42px; }.site-footer { display: block; }.site-footer div { display: grid; gap: 7px; }.site-footer > span { display: block; margin-top: 14px; } }
@media (max-width: 520px) { .hero-actions { align-items: start; flex-direction: column; gap: 22px; }.hero-art { min-height: 330px; }.deep-earth { width: 175px; height: 175px; }.deep-earth span { font-size: 52px; }.note-sample { right: 4%; }.note-record { right: 3%; bottom: 46px; }.orbit-one { width: 420px; left: -60px; }.orbit-two { width: 470px; left: -70px; }.orbit-three { width: 570px; left: -100px; }.stat-row { gap: 24px 14px; }.stat-row b { font-size: 24px; }.stat-row span { max-width: 120px; }.section-heading h2 { font-size: 52px; }.time-card strong { font-size: 20px; }.timeline-detail { padding-right: 20px; padding-left: 20px; }.detail-visual { margin-right: -20px; margin-left: -20px; }.detail-footer { display: block; }.inline-button { margin-top: 20px; }.atlas-grid { grid-template-columns: 1fr; }.field-note { grid-template-columns: 1fr; gap: 12px; padding: 22px; }.field-note-mark { display: none; }.field-links { grid-column: auto; }.connections { margin-top: 80px; }.connections-heading { display: block; }.connections-heading h3 { margin: 14px 0; }.connection-map { min-height: 580px; }.connection-node { min-width: 125px; max-width: 160px; }.connection-node b { font-size: 12px; }.node-corteza { top: 20px; }.node-pangea { top: 20px; }.node-mar { top: 39%; left: 22%; }.node-andes { bottom: 20px; }.node-amonita { bottom: 20px; }.node-erosion { top: 58%; }.challenge-shell { padding: 18px; }.challenge-top { display: block; }.score-box { margin-top: 24px; }.challenge-tabs { gap: 4px; }.challenge-tab { padding: 7px 6px; font-size: 8px; }.challenge-pane { padding-top: 25px; }.choice-grid, .order-board { grid-template-columns: 1fr; }.challenge-actions { align-items: start; flex-direction: column-reverse; }.closing-section h2 { font-size: 60px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } }