:root { --challenge-line: rgba(230,182,154,.18); }

.challenge-hero { min-height: 900px; position: relative; display: flex; align-items: center; overflow: hidden; padding: 148px 0 96px; background: radial-gradient(circle at 77% 42%, rgba(255,121,91,.14), transparent 25%), linear-gradient(150deg, #101724 0%, #111a28 52%, #090f17 100%); }
.challenge-hero::after { content: ""; position: absolute; inset: auto -12% -45% 25%; height: 70%; border-top: 1px solid rgba(230,182,154,.20); background: linear-gradient(150deg, rgba(40,52,72,.48), transparent 58%); transform: rotate(-8deg); }
.challenge-grid { position: absolute; inset: 0; opacity: .22; background-image: linear-gradient(rgba(230,182,154,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(230,182,154,.06) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(90deg, transparent, #000 34%, #000 80%, transparent); }
.challenge-orbit { position: absolute; pointer-events: none; border: 1px solid rgba(230,182,154,.16); border-radius: 50%; }
.challenge-orbit--one { width: 720px; height: 360px; right: -40px; top: 150px; transform: rotate(-18deg); }
.challenge-orbit--two { width: 460px; height: 460px; right: 130px; top: 220px; border-color: rgba(255,121,91,.15); }
.challenge-hero-layout { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(420px, .8fr); gap: 92px; align-items: center; }
.challenge-hero-copy { max-width: 720px; }
.status--active { color: var(--color-copper); border-color: rgba(255,121,91,.54); background: rgba(255,121,91,.06); }
.status--active span { flex: 0 0 6px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-ember); box-shadow: 0 0 0 5px rgba(255,121,91,.08); }
.challenge-hero .status { margin-bottom: 30px; }
.challenge-hero h1 { max-width: 750px; margin: 0; color: var(--color-ivory); font-size: clamp(68px, 7vw, 104px); font-weight: 470; line-height: .9; letter-spacing: -.064em; text-transform: uppercase; }
.challenge-hero h1 span { display: block; color: var(--color-copper); }
.challenge-lead { margin: 28px 0 0; font-size: clamp(24px, 2.6vw, 34px); line-height: 1.2; letter-spacing: -.025em; }
.challenge-support { max-width: 640px; margin: 13px 0 0; color: var(--color-muted); font-size: 17px; }
.challenge-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.challenge-window { margin: 22px 0 0; color: rgba(245,241,235,.5); font-family: var(--font-mono); font-size: 10px; letter-spacing: .07em; text-transform: uppercase; }
.challenge-monument { min-width: 0; padding: 20px; border: 1px solid var(--color-border-strong); border-radius: var(--radius-lg); background: linear-gradient(145deg, rgba(40,52,72,.8), rgba(9,15,23,.86)); box-shadow: var(--shadow-large); }
.monument-topline { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--color-border); color: rgba(245,241,235,.48); font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; }
.monument-topline span:last-child { color: var(--color-ember); }
.monument-core { position: relative; height: 320px; display: grid; place-items: center; overflow: hidden; background: radial-gradient(circle, rgba(255,121,91,.09), transparent 45%); }
.monument-core img { position: relative; z-index: 2; width: 86px; height: auto; object-fit: contain; filter: drop-shadow(0 18px 34px rgba(0,0,0,.32)); }
.monument-ring { position: absolute; left: 50%; top: 50%; border: 1px solid rgba(230,182,154,.26); border-radius: 50%; transform: translate(-50%,-50%) rotate(-18deg); }
.monument-ring--outer { width: 360px; height: 170px; }
.monument-ring--inner { width: 220px; height: 220px; border-color: rgba(255,121,91,.3); transform: translate(-50%,-50%) rotate(22deg); }
.monument-prize { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding: 20px 5px 18px; border-top: 1px solid var(--color-border); }
.monument-prize span { color: var(--color-copper); font-family: var(--font-mono); font-size: 9px; letter-spacing: .12em; text-transform: uppercase; }
.monument-prize strong { font-size: 44px; font-weight: 560; letter-spacing: -.04em; line-height: 1; }
.monument-lanes { display: grid; grid-template-columns: 1fr 50px 1fr; align-items: center; padding: 12px; border: 1px solid var(--color-border); color: var(--color-copper); font-family: var(--font-mono); font-size: 10px; letter-spacing: .12em; text-align: center; text-transform: uppercase; }
.monument-lanes i { height: 1px; background: linear-gradient(90deg, transparent, var(--color-ember), transparent); }

.section { position: relative; padding: 120px 0; }
.section-heading { display: grid; grid-template-columns: 1fr minmax(280px, 430px); gap: 56px; align-items: end; margin-bottom: 48px; }
.section-heading h2, .entry-intro h2, .judging-copy h2, .rules-copy h2, .security-layout h2 { margin: 0; font-size: clamp(44px, 5.2vw, 72px); font-weight: 450; line-height: 1.02; letter-spacing: -.045em; }
.section-heading > p, .entry-intro > p:not(.eyebrow), .judging-copy > p:not(.eyebrow), .rules-copy > p:not(.eyebrow), .security-layout p { margin: 0; color: var(--color-muted); }
.prize-section { background: #0c131e; }
.prize-grid { display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 14px; margin: 0; padding: 0; list-style: none; }
.prize-card { min-height: 250px; display: flex; flex-direction: column; justify-content: space-between; padding: 24px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: linear-gradient(150deg, rgba(40,52,72,.48), rgba(11,17,27,.75)); }
.prize-card--first { border-color: rgba(255,121,91,.34); background: radial-gradient(circle at 80% 15%, rgba(255,121,91,.12), transparent 34%), linear-gradient(150deg, rgba(40,52,72,.64), rgba(11,17,27,.75)); }
.rank-mark { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid rgba(230,182,154,.24); border-radius: 50%; color: var(--color-copper); font-family: var(--font-mono); font-size: 10px; }
.prize-card small, .prize-card strong { display: block; }
.prize-card small { color: var(--color-copper); font-family: var(--font-mono); font-size: 9px; letter-spacing: .14em; text-transform: uppercase; }
.prize-card strong { margin-top: 9px; font-size: clamp(42px, 4vw, 62px); font-weight: 560; letter-spacing: -.045em; line-height: 1; }

.category-section { background: linear-gradient(145deg, #101724, #0a111a); }
.category-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.category-card { min-height: 460px; padding: 32px; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: radial-gradient(circle at 88% 8%, rgba(255,121,91,.08), transparent 28%), rgba(40,52,72,.30); }
.category-index { display: flex; justify-content: space-between; align-items: center; padding-bottom: 20px; border-bottom: 1px solid var(--color-border); }
.category-index span { color: var(--color-ember); font-family: var(--font-mono); font-size: 10px; }
.category-index strong { font-size: 14px; letter-spacing: .12em; text-transform: uppercase; }
.category-requirement { width: fit-content; margin: 70px 0 18px; padding: 8px 11px; border: 1px solid rgba(255,121,91,.34); border-radius: 999px; color: var(--color-copper); font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; }
.category-card h3 { margin: 0 0 14px; font-size: 28px; font-weight: 520; letter-spacing: -.025em; }
.category-card > p:not(.category-requirement) { color: var(--color-muted); }
.category-card ul { margin: 28px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--color-border); }
.category-card li { padding: 11px 0; border-bottom: 1px solid var(--color-border); color: rgba(245,241,235,.72); font-size: 12px; }
.category-card li::before { content: "◇"; margin-right: 10px; color: var(--color-ember); }
.category-boundary { margin: 18px 0 0; padding: 18px 20px; border-left: 2px solid var(--color-ember); background: rgba(255,121,91,.035); color: rgba(245,241,235,.72); }

.entry-section { background: #0a111a; }
.entry-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; align-items: start; }
.entry-intro { position: sticky; top: 115px; }
.entry-intro > p:not(.eyebrow) { margin-top: 24px; }
.entry-steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--color-border); }
.entry-steps li { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--color-border); }
.entry-steps li > span { color: var(--color-ember); font-family: var(--font-mono); font-size: 10px; }
.entry-steps strong { font-size: 16px; }
.entry-steps p { margin: 5px 0 0; color: var(--color-muted); font-size: 14px; }
.entry-steps a { color: var(--color-copper); text-underline-offset: 4px; }
.submission-review { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; margin-top: 48px; padding: 24px; border: 1px dashed rgba(255,121,91,.48); background: rgba(255,121,91,.035); }
.submission-review span, .submission-review strong { display: block; }
.submission-review span { color: var(--color-ember); font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; }
.submission-review strong { margin-top: 8px; }
.submission-review p { margin: 0; color: var(--color-muted); font-size: 13px; }
.submission-review__copy { display: grid; gap: 16px; justify-items: start; }

.timeline-section { background: #101724; }
.timeline { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 0; padding: 0; list-style: none; border: 1px solid var(--color-border); }
.timeline::before { content: ""; position: absolute; left: 16%; right: 16%; top: 52px; height: 1px; background: linear-gradient(90deg, var(--color-copper), var(--color-ember), var(--color-copper)); }
.timeline li { position: relative; min-height: 230px; padding: 30px; border-right: 1px solid var(--color-border); background: rgba(11,17,27,.28); }
.timeline li:last-child { border-right: 0; }
.timeline span { position: relative; z-index: 1; width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid rgba(255,121,91,.44); border-radius: 50%; color: var(--color-copper); background: #101724; font-family: var(--font-mono); font-size: 9px; text-transform: uppercase; }
.timeline strong, .timeline small { display: block; }
.timeline strong { margin-top: 60px; font-size: 22px; font-weight: 520; }
.timeline small { margin-top: 8px; color: var(--color-muted); font-size: 12px; }

.judging-section { background: linear-gradient(145deg, #0a111a, #131e2d); }
.judging-layout, .rules-layout, .security-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; align-items: start; }
.judging-copy p:not(.eyebrow), .rules-copy p:not(.eyebrow) { margin-top: 24px; }
.judging-grid { display: grid; grid-template-columns: 1fr 1fr; margin: 0; padding: 0; border: 1px solid var(--color-border); list-style: none; }
.judging-grid li { min-height: 110px; display: flex; align-items: center; gap: 18px; padding: 20px; border-right: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.judging-grid li:nth-child(2n) { border-right: 0; }
.judging-grid li:nth-last-child(-n+2) { border-bottom: 0; }
.judging-grid span { color: var(--color-ember); font-family: var(--font-mono); font-size: 9px; }

.rules-section { background: #0d1520; }
.rules-panel { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--color-border); }
.rules-panel > div { padding: 28px; }
.rules-panel > div + div { border-left: 1px solid var(--color-border); }
.rules-panel strong { color: var(--color-copper); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.rules-panel ul { margin: 24px 0 0; padding: 0; list-style: none; }
.rules-panel li { padding: 11px 0; border-bottom: 1px solid var(--color-border); color: rgba(245,241,235,.72); font-size: 13px; }
.rules-panel li:last-child { border-bottom: 0; }

.security-section { position: relative; overflow: hidden; background: radial-gradient(circle at 80% 50%, rgba(255,121,91,.09), transparent 34%), #090f17; }
.security-orbit { position: absolute; width: 620px; height: 620px; right: -180px; top: -180px; border: 1px solid rgba(230,182,154,.10); border-radius: 50%; }
.security-layout { position: relative; align-items: center; }
.security-layout ul { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin: 0; padding: 0; list-style: none; }
.security-layout li { min-height: 62px; display: flex; align-items: center; padding: 14px; border: 1px solid rgba(230,182,154,.16); background: rgba(40,52,72,.32); color: var(--color-copper); font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; }

.channels-section { background: #101724; }
.channel-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.channel-card { min-width: 0; min-height: 230px; display: flex; flex-direction: column; padding: 22px; border: 1px solid var(--color-border); border-radius: var(--radius-md); color: inherit; background: linear-gradient(150deg, rgba(40,52,72,.42), rgba(11,17,27,.7)); text-decoration: none; transition: transform .2s var(--ease), border-color .2s, background .2s; }
.channel-card:hover { transform: translateY(-3px); border-color: rgba(255,121,91,.45); background: linear-gradient(150deg, rgba(40,52,72,.62), rgba(255,121,91,.05)); }
.channel-card span { color: var(--color-copper); font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; }
.channel-card strong { margin-top: 55px; overflow-wrap: anywhere; font-size: 18px; font-weight: 520; }
.channel-card em { margin-top: auto; color: var(--color-ember); font-size: 10px; font-style: normal; text-transform: uppercase; }

.challenge-final { padding: 104px 0; background: linear-gradient(145deg, #131e2d, #0a111a); }
.final-layout { display: grid; grid-template-columns: 1fr auto; gap: 50px; align-items: end; }
.final-layout h2 { max-width: 850px; margin: 0; font-size: clamp(44px, 5vw, 70px); font-weight: 450; line-height: 1.02; letter-spacing: -.045em; }
.final-layout > div:last-child { display: grid; gap: 18px; justify-items: start; }
.text-link { color: var(--color-copper); font-size: 12px; text-underline-offset: 5px; }
.challenge-hero a:focus-visible, .entry-section a:focus-visible, .channels-section a:focus-visible, .challenge-final a:focus-visible { outline: 2px solid var(--color-ember); outline-offset: 4px; }
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }
main > section[id] { scroll-margin-top: 86px; }

@media (max-width: 1100px) {
  .challenge-hero-layout { grid-template-columns: 1fr 410px; gap: 48px; }
  .challenge-hero h1 { font-size: clamp(62px, 7vw, 80px); }
  .entry-layout, .judging-layout, .rules-layout, .security-layout { gap: 56px; }
  .channel-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .challenge-hero { min-height: auto; padding: 130px 0 92px; }
  .challenge-hero-layout, .entry-layout, .judging-layout, .rules-layout, .security-layout { grid-template-columns: 1fr; }
  .challenge-monument { max-width: 640px; }
  .entry-intro { position: static; }
  .section { padding: 96px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .submission-review { grid-template-columns: 1fr; gap: 16px; }
  .submission-review__copy .button { width: 100%; }
  .final-layout { grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 620px) {
  .challenge-hero { padding: 116px 0 74px; }
  .challenge-grid { background-size: 48px 48px; }
  .challenge-hero h1 { font-size: clamp(56px, 17vw, 74px); }
  .challenge-lead { font-size: 25px; }
  .challenge-support { font-size: 15px; }
  .challenge-hero-actions { display: grid; }
  .challenge-hero-actions .button { width: 100%; }
  .challenge-window { line-height: 1.7; }
  .challenge-monument { padding: 14px; }
  .monument-core { height: 250px; }
  .monument-ring--outer { width: 280px; height: 135px; }
  .monument-ring--inner { width: 170px; height: 170px; }
  .monument-prize { align-items: start; flex-direction: column; }
  .monument-prize strong { font-size: 40px; }
  .section { padding: 76px 0; }
  .section-heading h2, .entry-intro h2, .judging-copy h2, .rules-copy h2, .security-layout h2 { font-size: 42px; }
  .prize-grid, .category-grid, .timeline, .judging-grid, .rules-panel, .security-layout ul, .channel-grid { grid-template-columns: 1fr; }
  .prize-card { min-height: 190px; }
  .category-card { min-height: auto; padding: 24px; }
  .category-requirement { margin-top: 44px; }
  .entry-steps li { grid-template-columns: 38px 1fr; gap: 10px; }
  .timeline::before { left: 53px; right: auto; top: 30px; bottom: 30px; width: 1px; height: auto; background: linear-gradient(var(--color-copper), var(--color-ember), var(--color-copper)); }
  .timeline li { min-height: 170px; padding: 24px; border-right: 0; border-bottom: 1px solid var(--color-border); }
  .timeline li:last-child { border-bottom: 0; }
  .timeline strong { margin-top: 34px; }
  .judging-grid li, .judging-grid li:nth-child(2n), .judging-grid li:nth-last-child(-n+2) { min-height: 78px; border-right: 0; border-bottom: 1px solid var(--color-border); }
  .judging-grid li:last-child { border-bottom: 0; }
  .rules-panel > div + div { border-left: 0; border-top: 1px solid var(--color-border); }
  .channel-card { min-height: 190px; }
  .final-layout h2 { font-size: 42px; }
}

@media (max-width: 350px) {
  .challenge-hero h1 { font-size: 52px; }
  .section-heading h2, .entry-intro h2, .judging-copy h2, .rules-copy h2, .security-layout h2, .final-layout h2 { font-size: 38px; }
  .monument-lanes { grid-template-columns: 1fr 28px 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}