/* Dual-Use Hackathon. Scoped to .dualuse so the rest of the site is unchanged. */
@font-face {
  font-family: Anton;
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/dual-use/fonts/anton-latin.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
.dualuse {
  --du-forest: #272B1D;
  --du-field: #272B1D;
  --du-rust: #8B4A28;
  --du-cream: #F3EADC;
  --du-peach: #E7A56E;
  --du-orange: #E7A56E;
  --du-orange-ink: #8B4A28;
  --du-ink: #1C1C14;
  --du-paper: #F3EADC;
  --du-grid: #E4D5C4;
  --du-brown: #5C5148;
  --du-white: #FFFFFF;
  background: var(--du-paper);
  color: var(--du-ink);
  font: 400 17px/1.55 Archivo, sans-serif;
}
.dualuse * { box-sizing: border-box; }
.dualuse a { color: inherit; }
.dualuse img { max-width: 100%; height: auto; }
.dualuse h1, .dualuse h2 { margin-bottom: 0.28em; padding-bottom: 0.06em; }
.dualuse h1, .dualuse h2, .dualuse .du-anton {
  font-family: Anton, Impact, sans-serif;
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 0.92;
  text-transform: uppercase;
  margin: 0;
}
.dualuse h1 { font-size: clamp(56px, 11vw, 168px); }
.dualuse h2 { font-size: clamp(40px, 6vw, 88px); }
.dualuse h3 { margin: 0 0 8px; font: 700 28px/1.15 Archivo, sans-serif; }
.dualuse p { margin: 0 0 12px; }
.dualuse .du-mono, .dualuse .du-label {
  font: 500 12px/1.3 "JetBrains Mono", ui-monospace, monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.dualuse .du-brown { color: var(--du-brown); }
.dualuse .du-sr {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); border: 0;
}

.dualuse-page { background: var(--du-paper); }
.du-paper {
  background-color: var(--du-paper);
  background-image:
    linear-gradient(var(--du-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--du-grid) 1px, transparent 1px);
  background-size: 16px 16px;
}
.du-ink {
  background: var(--du-field);
  color: var(--du-white);
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 16px 16px;
}
@media (min-width: 800px) {
  .dualuse { font-size: 18px; }
  .du-paper, .du-ink { background-size: 24px 24px; }
}

.du-wrap { width: min(1200px, calc(100% - 32px)); max-width: 100%; margin: 0 auto; min-width: 0; }
.du-section { padding: 72px 0; scroll-margin-top: 120px; }
.du-section > .du-wrap > * { animation: du-rise .6s ease both; }
@keyframes du-rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.du-header {
  position: sticky; top: 0; z-index: 30; height: 64px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 0 16px; background: var(--du-paper); border-bottom: 1.5px solid var(--du-ink);
}
.du-brand { display: flex; align-items: center; gap: 10px; text-decoration: none; min-width: 0; }
.du-brand b { font: 800 18px/1 Archivo, sans-serif; letter-spacing: -0.04em; }
.du-brand span { font-weight: 500; }
.du-brand i { width: 1px; height: 18px; background: var(--du-ink); display: block; }
.du-brand small { font: 700 11px/1.1 Archivo, sans-serif; letter-spacing: 0.04em; }
.du-header-actions { display: flex; gap: 8px; align-items: center; }
.du-affil {
  display: block; padding: 8px 16px; background: var(--du-paper); color: var(--du-ink);
  border-bottom: 1px solid var(--du-ink); text-decoration: none;
}
.du-jump {
  position: sticky; top: 64px; z-index: 25; display: none;
  align-items: center; gap: 14px; overflow: auto; padding: 8px 16px;
  background: var(--du-field); color: var(--du-white);
}
.du-jump.is-on { display: flex; }
.du-jump a { color: var(--du-white); text-decoration: none; white-space: nowrap; }
.du-jump a.is-active { color: var(--du-orange); }
.du-jump .du-cd-compact { margin-left: auto; color: var(--du-orange); white-space: nowrap; }
.du-jump .du-viewfinder { border: 0; background: transparent; min-height: 0; padding: 0; }
.du-jump .du-bracket, .du-jump .du-cd-label, .du-jump [data-cd-sub], .du-jump .du-progress, .du-jump .du-vf-live { display: none; }
.du-jump .du-cd-blocks b { font-size: 18px; color: var(--du-orange); }

.du-btn, .dualuse button.du-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 16px; border: 2px solid var(--du-ink); border-radius: 0;
  font-family: Anton, Impact, sans-serif; letter-spacing: 0.04em; text-transform: uppercase;
  text-decoration: none; cursor: pointer; background: transparent; color: var(--du-ink);
}
.dualuse a.du-btn-primary, .du-btn-primary, .dualuse button.du-btn.du-btn-primary { background: var(--du-field); color: var(--du-ink); box-shadow: 4px 4px 0 var(--du-ink); }
.dualuse button.du-btn.du-btn-secondary { background: var(--du-ink); color: var(--du-white); }
.du-btn-primary:active { box-shadow: 0 0 0 var(--du-ink); transform: translate(4px, 4px); }
.dualuse a.du-btn-secondary, .du-btn-secondary { background: var(--du-ink); color: var(--du-white); }
.du-btn-text { background: none; border: 0; box-shadow: none; min-height: 44px; padding: 0; font-family: "JetBrains Mono", monospace; font-size: 12px; letter-spacing: 0.12em; text-decoration: underline; text-underline-offset: 3px; }
.dualuse .du-ink a.du-btn-secondary, .du-ink .du-btn-secondary { background: var(--du-field); color: var(--du-ink); }

.du-blocklabel { display: inline-block; background: var(--du-ink); color: var(--du-white); padding: 8px 10px; }
.du-blocklabel em { color: var(--du-orange); font-style: normal; margin: 0 0.28em; }
.du-highlight { display: inline-block; background: var(--du-field); color: var(--du-ink); padding: 0 8px; }

.du-hero { min-height: calc(100svh - 96px); display: grid; gap: 28px; align-items: end; padding: 28px 0 40px; }
.du-hero-copy { max-width: 100%; }
.du-hero h1 { margin-bottom: 28px; }
.du-hero h1 span { display: block; }
.du-hero-line { display: inline-block; background: var(--du-ink); color: var(--du-orange); padding: 0 8px 10px; margin: 8px 0 4px; }
.du-kicker-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 16px; }
.du-badge { border: 1.5px solid var(--du-ink); padding: 6px 8px; }

.du-viewfinder { position: relative; border: 2px solid var(--du-ink); background: var(--du-paper); padding: 28px 16px 20px; min-height: 180px; }
.du-hero .du-viewfinder { padding-right: 78px; }
.du-ink .du-viewfinder { border-color: var(--du-orange); background: transparent; }
.du-vf-tag, .du-vf-live { position: absolute; font: 500 12px/1 "JetBrains Mono", monospace; letter-spacing: 0.12em; }
.du-vf-tag { top: 8px; left: 10px; }
.du-vf-live { right: 10px; bottom: 8px; display: inline-flex; align-items: center; gap: 6px; color: var(--du-orange-ink); }
.du-ink .du-vf-live { color: var(--du-orange); }
.du-vf-live i { width: 8px; height: 8px; border-radius: 50%; background: var(--du-field); display: block; }
.du-bracket { position: absolute; width: 16px; height: 16px; border: 3px solid var(--du-orange); }
.du-bracket.tl { top: -2px; left: -2px; border-right: 0; border-bottom: 0; }
.du-bracket.tr { top: -2px; right: -2px; border-left: 0; border-bottom: 0; }
.du-bracket.bl { bottom: -2px; left: -2px; border-right: 0; border-top: 0; }
.du-bracket.br { bottom: -2px; right: -2px; border-left: 0; border-top: 0; }
.du-drone { width: min(220px, 46vw); position: absolute; right: -8px; top: -28px; animation: du-bob 4s ease-in-out infinite; }
.du-drone .rotor { transform-origin: center; animation: du-spin 1.2s linear infinite; }
@keyframes du-bob { 50% { transform: translateY(-6px); } }
@keyframes du-spin { to { transform: rotate(360deg); } }

.du-cd-label { margin: 8px 0; }
.du-cd-blocks { display: flex; gap: 14px; align-items: flex-end; }
.du-cd-block { min-width: 72px; }
.du-colon { font-family: Anton, Impact, sans-serif; font-size: clamp(28px, 4vw, 48px); line-height: 1; padding-bottom: 18px; }
.du-cd-block b {
  display: block; font-family: Anton, Impact, sans-serif; font-size: clamp(36px, 4vw, 64px);
  line-height: .9; font-variant-numeric: tabular-nums; letter-spacing: 0.02em;
}
.du-cd-block span { color: var(--du-brown); }
.du-ink .du-cd-block span { color: var(--du-orange); }
.du-progress { height: 4px; background: rgba(255,255,255,.2); margin: 10px 0; }
.du-progress i { display: block; height: 100%; background: var(--du-field); width: 0; }
.du-cd-compact b { font-family: Anton, sans-serif; font-variant-numeric: tabular-nums; }

.du-stats { display: grid; grid-template-columns: 1fr 1fr; }
.du-stat { padding: 28px 16px; border-top: 1px solid var(--du-orange); }
.du-stat b {
  display: block; color: var(--du-orange); font-family: Anton, Impact, sans-serif;
  font-size: clamp(48px, 7vw, 104px); line-height: .9; letter-spacing: 0.01em;
}
.du-stat span { display: block; margin-top: 8px; max-width: 18ch; }

.du-split { display: grid; gap: 28px; }
.du-pills { display: grid; gap: 10px; }
.du-pill {
  display: flex; align-items: center; gap: 12px; min-height: 64px; padding: 8px 14px;
  border: 1.5px solid var(--du-ink); border-radius: 999px; background: var(--du-white); text-decoration: none;
}
.du-pill svg { width: 28px; height: 28px; }
.du-pill strong { font-family: Anton, sans-serif; font-size: 28px; letter-spacing: 0.02em; font-weight: 400; }
.du-pill.is-mystery { background: var(--du-ink); color: var(--du-white); animation: du-pulse 2.4s ease-in-out infinite; }
.du-pill.is-mystery strong { color: var(--du-orange); }
@keyframes du-pulse { 50% { transform: scale(1.02); } }
.du-callout { display: flex; gap: 12px; align-items: flex-start; margin-top: 22px; padding: 16px; background: var(--du-ink); color: var(--du-white); }

.du-lenses { display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; }
.du-lens {
  scroll-snap-align: start; flex: 0 0 min(78vw, 280px); min-height: 420px; position: relative;
  color: var(--du-white); background: var(--du-ink); overflow: hidden;
}
.du-lens img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; filter: grayscale(1); }
.du-lens .du-shade {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(17,21,24,.15), rgba(248,152,80,.55) 45%, rgba(17,21,24,.92));
  mix-blend-mode: multiply;
}
.du-lens .du-lens-body { position: absolute; inset: auto 0 0 0; padding: 16px; z-index: 1; }
.du-lens .du-iconcirc { width: 42px; height: 42px; border-radius: 50%; background: var(--du-field); color: var(--du-ink); display: grid; place-items: center; }
.du-lens h3 { font-family: Anton, sans-serif; font-size: 40px; font-weight: 400; text-transform: uppercase; }
.du-chip { display: inline-flex; background: var(--du-white); color: var(--du-ink); padding: 4px 8px; margin-top: 8px; }
.du-chip img { height: 28px; width: auto; }
.du-credit { display: block; margin-top: 8px; font-size: 12px; letter-spacing: 0.08em; }
.du-lens.is-mystery { background: var(--du-field); color: var(--du-ink); }
.du-lens.is-mystery .du-q { font-family: Anton, sans-serif; font-size: 120px; line-height: .8; }

.du-podium { display: grid; grid-template-columns: 1fr 1.15fr 1fr; gap: 8px; align-items: end; }
.du-pod { background: var(--du-ink); color: var(--du-white); padding: 16px 12px; }
.du-pod.is-first { background: var(--du-field); color: var(--du-ink); min-height: 220px; }
.du-pod.is-second { min-height: 160px; }
.du-pod.is-third { min-height: 120px; }
.du-pod b { display: block; font-family: Anton, sans-serif; font-size: clamp(36px, 5vw, 72px); line-height: .9; }
.du-incubator { background: var(--du-ink); color: var(--du-white); padding: 22px; margin-top: 18px; }
.du-incubator .du-money { font-family: Anton, sans-serif; font-size: clamp(64px, 10vw, 120px); color: var(--du-orange); line-height: .85; }
.du-quote { display: flex; gap: 12px; margin-top: 18px; padding-top: 12px; border-top: 1.5px solid var(--du-ink); }

.du-partner { display: grid; gap: 14px; padding: 22px 0; border-top: 1.5px solid var(--du-ink); }
.du-logo-box { background: var(--du-white); border: 1.5px solid var(--du-ink); padding: 12px; }
.du-logo-box img { height: 60px; width: auto; object-fit: contain; }
.du-perk { display: flex; gap: 10px; align-items: flex-start; margin: 0 0 8px; }
.du-perk i { width: 28px; height: 28px; border: 1.5px solid var(--du-orange); border-radius: 50%; display: grid; place-items: center; flex: none; color: var(--du-orange-ink); }
.du-orgs { display: flex; flex-wrap: wrap; gap: 8px 0; margin-top: 18px; font-weight: 700; }
.du-orgs span::before { content: "·"; margin: 0 8px; }
.du-orgs span:first-child::before { content: ""; margin: 0; }
.du-marquee { overflow: hidden; }
@media (max-width: 799px) {
  .du-marquee-track { display: flex; gap: 18px; width: max-content; animation: du-marquee 28s linear infinite; }
}
@keyframes du-marquee { to { transform: translateX(-50%); } }

.du-talks { display: grid; gap: 12px; }
.du-talk h3 { font-family: Anton, sans-serif; font-weight: 400; text-transform: uppercase; font-size: clamp(28px, 4vw, 40px); }
.du-tag { display: inline-block; background: var(--du-field); color: var(--du-ink); padding: 4px 8px; margin-bottom: 8px; }

.du-people { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.du-person { position: relative; aspect-ratio: 4/5; background: var(--du-ink); color: var(--du-white); perspective: 1000px; }
.du-person-inner { position: relative; width: 100%; height: 100%; transform-style: preserve-3d; transition: transform .45s ease; }
.du-person.is-flipped .du-person-inner { transform: rotateY(180deg); }
.du-face { position: absolute; inset: 0; backface-visibility: hidden; overflow: hidden; }
.du-face-back { transform: rotateY(180deg); background: var(--du-ink); padding: 16px; display: flex; flex-direction: column; }
.du-photo, .du-mono-face { width: 100%; height: 100%; object-fit: cover; }
.du-photo { filter: none; border: 1.5px solid var(--du-ink); }
.du-person:hover .du-photo, .du-person:focus-within .du-photo { filter: none; }
.du-person-shade {
  position: absolute; left: 0; right: 0; bottom: 0; height: 40%;
  background: linear-gradient(180deg, transparent, rgba(17,21,24,.72));
  padding: 16px; display: flex; flex-direction: column; justify-content: flex-end;
}
.du-person-shade strong { font-family: Anton, sans-serif; font-size: 26px; font-weight: 400; letter-spacing: 0.01em; text-transform: uppercase; line-height: .95; }
.du-person-tag { position: absolute; top: 10px; left: 10px; background: var(--du-field); color: var(--du-ink); padding: 4px 6px; z-index: 2; }
.du-li { position: absolute; right: 10px; bottom: 10px; z-index: 2; background: var(--du-white); color: var(--du-ink); text-decoration: none; min-height: 44px; padding: 0 10px; display: inline-flex; align-items: center; }
.du-more-front { position: absolute; top: 10px; right: 10px; z-index: 2; background: var(--du-paper); color: var(--du-ink); }
.du-more, .du-close {
  min-height: 44px; border: 1.5px solid currentColor; background: transparent; color: inherit;
  font: 500 12px/1 "JetBrains Mono", monospace; letter-spacing: 0.12em; text-transform: uppercase; cursor: pointer;
}
.du-mono-face {
  display: grid; place-items: center; background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 16px 16px;
}
.du-mono-face b { font-family: Anton, sans-serif; font-size: 72px; color: var(--du-orange); font-weight: 400; position: relative; z-index: 1; }
.du-mono-face img { position: absolute; width: 46%; opacity: .2; filter: invert(1); }
.du-sheet {
  position: fixed; inset: auto 0 0 0; z-index: 40; background: var(--du-paper); color: var(--du-ink);
  padding: 18px 16px 28px; border-top: 3px solid var(--du-ink); max-height: 80svh; overflow: auto;
}
.du-criteria { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 18px; }
.du-criteria article { border: 1.5px solid var(--du-ink); padding: 12px; background: var(--du-white); }
.du-criteria b { font-family: Anton, sans-serif; font-size: 40px; font-weight: 400; }

.du-days { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 12px; }
.du-days button, .du-filters button { min-height: 44px; border: 1.5px solid var(--du-ink); background: transparent; font: 500 12px/1 "JetBrains Mono", monospace; letter-spacing: 0.12em; text-transform: uppercase; cursor: pointer; }
.du-days button.is-on { background: var(--du-ink); color: var(--du-white); }
.du-filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 18px; }
.du-ink .du-filters button { color: var(--du-white); border-color: var(--du-white); }
.du-filters button.is-on, .du-ink .du-filters button.is-on { background: var(--du-field); color: var(--du-ink); border-color: var(--du-orange); }
.du-row { display: grid; grid-template-columns: 92px 1fr; gap: 10px; padding: 14px 0; border-top: 1px solid var(--du-ink); position: relative; }
.du-row time, .du-row .du-when { font-family: Anton, sans-serif; font-size: 22px; line-height: 1; }
.du-must { background: var(--du-field); color: var(--du-ink); padding: 2px 6px; }
.du-place { border: 1px solid var(--du-ink); padding: 2px 6px; text-decoration: none; }
.du-now { position: absolute; left: 0; right: 0; height: 2px; background: var(--du-field); }

.du-steps { display: grid; gap: 18px; }
.du-step { position: relative; padding-left: 8px; }
.du-step b { font-family: Anton, sans-serif; font-size: 56px; color: var(--du-orange); font-weight: 400; line-height: .9; }
.du-learn-grid, .du-two { display: grid; gap: 12px; }
.du-card { background: var(--du-white); border: 1.5px solid var(--du-ink); padding: 16px; text-decoration: none; display: block; min-height: 120px; }
.du-ink .du-card { background: transparent; }
.du-checks { list-style: none; padding: 0; margin: 0; }
.du-checks li { display: flex; gap: 10px; align-items: flex-start; margin: 0 0 10px; }
.du-faq details { border-top: 1.5px solid var(--du-ink); padding: 8px 0; }
.du-faq summary { cursor: pointer; font-weight: 700; min-height: 44px; display: flex; align-items: center; }
.du-final { background: var(--du-field); color: var(--du-ink); padding: 64px 0; text-align: left; }
.du-logo-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.du-logo-box { background: #fff; border: 1.5px solid var(--du-ink); display: inline-flex; align-items: center; padding: 6px 8px; }
.du-logo-row img { height: 60px; width: auto; max-width: 280px; object-fit: contain; background: transparent; padding: 0; }
.du-logo-word { font-family: Archivo, sans-serif; font-weight: 800; font-size: 16px; letter-spacing: -0.04em; color: var(--du-ink); padding: 10px 14px; white-space: nowrap; }

.du-otp { max-width: 440px; margin: 28px auto 72px; position: relative; }
.du-otp .du-drone { position: static; display: block; width: 96px; margin: 0 0 8px auto; animation: du-bob 4s ease-in-out infinite; }
.dualuse .footer-col a { overflow-wrap: anywhere; }
.dualuse.app button:disabled { opacity: .4; box-shadow: none; cursor: not-allowed; }
@media (max-width: 899px) {
  .appbar nav a.du-btn-text { display: none; }
  .app-main { padding-bottom: 120px; }
}
.du-otp input[type="email"], .du-otp input[type="password"], .du-otp input[type="text"] {
  width: 100%; min-height: 52px; border: 2px solid var(--du-ink); background: var(--du-white);
  color: #111518; -webkit-text-fill-color: #111518; caret-color: #111518;
  font: 18px/1.4 Archivo, sans-serif; padding: 8px 12px; color-scheme: light;
}
.du-otp input[type="password"] {
  font-family: ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0.14em;
}
.du-otp input::placeholder { color: #5C5148; -webkit-text-fill-color: #5C5148; opacity: 1; }
.du-pass { position: relative; }
.du-pass input { padding-right: 76px; }
.du-pass-toggle {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  min-height: 40px; padding: 0 8px; border: 0; background: transparent;
  color: #111518; cursor: pointer;
  font: 500 12px/1 "JetBrains Mono", ui-monospace, monospace;
  letter-spacing: 0.08em; text-transform: uppercase;
}
.du-auth { display: grid; gap: 10px; margin-top: 8px; }
.du-auth[hidden], .du-otp .du-error[hidden] { display: none; }
.du-remember { display: flex; gap: 8px; align-items: center; font-size: 15px; line-height: 1.4; }
.du-remember input { width: auto; min-height: 0; }
.du-auth-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.du-boxes { display: flex; gap: 8px; }
.du-boxes input { width: 100%; text-align: center; font-family: Anton, sans-serif; font-size: 40px; min-height: 64px; }
.du-error { color: var(--du-orange-ink); }

.du-focus:focus-visible, .dualuse a:focus-visible, .dualuse button:focus-visible, .dualuse summary:focus-visible {
  outline: 3px solid var(--du-orange); outline-offset: 3px;
}

@media (min-width: 900px) {
  .du-hero { grid-template-columns: 1.3fr .7fr; align-items: center; }
  .du-stats { grid-template-columns: repeat(4, 1fr); }
  .du-stat + .du-stat { border-left: 1px solid var(--du-orange); }
  .du-split { grid-template-columns: 1.1fr .9fr; align-items: center; }
  .du-lenses { display: grid; grid-template-columns: repeat(4, 1fr) 0.8fr; overflow: visible; }
  .du-lens { flex: none; }
  .du-partner { grid-template-columns: 180px 1fr 1fr; align-items: start; }
  .du-talks { grid-template-columns: repeat(3, 1fr); }
  .du-people.judges { grid-template-columns: repeat(3, 1fr); }
  .du-people.mentors { grid-template-columns: repeat(4, 1fr); }
  .du-steps { grid-template-columns: repeat(6, 1fr); }
  .du-step { border-top: 2px dashed var(--du-orange); padding-top: 12px; }
  .du-learn-grid { grid-template-columns: 1fr 1fr; }
  .du-two { grid-template-columns: 1fr 1fr; }
  .du-criteria { grid-template-columns: repeat(4, 1fr); }
  .du-prizes { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: end; }
  .du-incubator { margin-top: 0; }
}

.dualuse.app { min-height: 100svh; padding-bottom: 84px; }
.dualuse.app h1 { font-size: clamp(40px, 8vw, 84px); }
.dualuse.app h2 { font-size: clamp(28px, 4vw, 44px); }
.appbar {
  position: sticky; top: 0; z-index: 30; display: flex; justify-content: space-between; gap: 12px; align-items: center;
  min-height: 64px; padding: 8px 16px; background: var(--du-paper); border-bottom: 1.5px solid var(--du-ink);
}
.appbar nav, .tabbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 35; justify-content: space-around;
  background: var(--du-field); padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
}
.tabbar a { color: var(--du-white); text-decoration: none; min-height: 44px; min-width: 44px; display: grid; place-items: center; font: 500 11px/1 "JetBrains Mono", monospace; letter-spacing: 0.08em; text-transform: uppercase; }
.dualuse.app .card, .dualuse.app .notice { background: var(--du-white); border: 1.5px solid var(--du-ink); padding: 16px; margin: 0 0 12px; }
.dualuse.app .notice { background: var(--du-field); }
.dualuse.app button, .dualuse.app .btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 14px;
  border: 2px solid var(--du-ink); background: var(--du-field); color: var(--du-ink);
  font-family: Anton, Impact, sans-serif; letter-spacing: 0.04em; text-transform: uppercase; text-decoration: none; cursor: pointer;
  box-shadow: 4px 4px 0 var(--du-ink);
}
.dualuse.app button:active { box-shadow: 0 0 0 var(--du-ink); transform: translate(4px, 4px); }
.dualuse.app input, .dualuse.app select, .dualuse.app textarea {
  width: 100%; min-height: 48px; border: 2px solid var(--du-ink); background: var(--du-white);
  font: 17px/1.4 Archivo, sans-serif; padding: 8px 10px; color: var(--du-ink);
}
.dualuse.app .checks input, .dualuse.app .slots input { width: auto; min-height: 0; }
.du-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.du-chips label { position: relative; }
.du-chips input { position: absolute; opacity: 0; }
.du-chips span {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px;
  border: 1.5px solid var(--du-ink); background: var(--du-white); cursor: pointer;
}
.du-chips input:checked + span, .du-chips input:focus-visible + span { background: var(--du-field); outline: 3px solid var(--du-ink); }
.du-progress-ring { width: 72px; height: 72px; }
.du-next { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 14px 0; border-top: 1.5px solid var(--du-ink); text-decoration: none; min-height: 56px; }
.du-badge-card { max-width: 360px; background: var(--du-white); border: 2px solid var(--du-ink); box-shadow: 8px 8px 0 var(--du-ink); }
.du-badge-card header { background: var(--du-field); color: var(--du-ink); padding: 10px 12px; }
.du-badge-card .du-facebox { aspect-ratio: 1; background: var(--du-ink); display: grid; place-items: center; color: var(--du-orange); font-family: Anton, sans-serif; font-size: 96px; }
.du-badge-card .du-facebox img { width: 100%; height: 100%; object-fit: cover; }
.du-confetti i { position: fixed; top: -12px; width: 8px; height: 14px; animation: du-fall 1.1s ease-in forwards; }
@keyframes du-fall { to { transform: translateY(105vh) rotate(160deg); opacity: .2; } }
@media (min-width: 900px) {
  .tabbar { display: none; }
  .dualuse.app { padding-bottom: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  .dualuse .du-section > .du-wrap > *, .du-drone, .du-drone .rotor, .du-pill.is-mystery, .du-marquee-track, .du-vf-live i {
    animation: none !important;
  }
  .du-person-inner { transition: none; }
  .du-person.is-flipped .du-face-front { display: none; }
  .du-person.is-flipped .du-face-back { transform: none; position: relative; }
}

/* Prompt 19–22: cards, lenses, hero, podium, type */
.dualuse { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
.du-section.du-ink, .du-section--ink { background-color: var(--du-field); color: var(--du-white); }
.dualuse h1, .dualuse h2, .dualuse .du-paper h3, .dualuse .du-paper p, .dualuse .du-paper li { color: var(--du-ink); }
.dualuse .du-face-back, .dualuse .du-face-back p, .dualuse .du-face-back li, .dualuse .du-face-back .du-mono { color: var(--du-white); }
.dualuse .du-incubator, .dualuse .du-incubator h3, .dualuse .du-incubator p, .dualuse .du-incubator li { color: var(--du-white); }
.dualuse .du-incubator .du-money, .dualuse .du-incubator .du-mono { color: var(--du-orange); }
.du-lens.is-mystery, .du-lens.is-mystery .du-lens-body, .du-lens.is-mystery h3, .du-lens.is-mystery p { background: var(--du-ink); color: var(--du-white); }
.du-ink h1, .du-ink h2, .du-ink h3, .du-ink p, .du-ink li, .du-ink .du-mono { color: var(--du-white); }
.dualuse .du-brown { color: var(--du-brown); }
.du-hero { min-height: 0; display: block; padding: 20px 0 32px; }
.du-hero-grid { display: grid; gap: 16px; }
.du-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.du-hero-vf { min-height: 520px; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; background: var(--du-paper); }
.du-hero-vf .du-countdown { position: relative; z-index: 2; }
.du-cd-bare { position: relative; }
.du-radar { position: absolute; inset: 0; pointer-events: none; background: repeating-radial-gradient(circle at 50% 46%, transparent 0 42px, rgba(17,21,24,.05) 43px 44px); }
.du-radar::after { content: ""; position: absolute; left: 10%; top: 8%; width: 80%; height: 70%; background: conic-gradient(from 0deg, transparent 0 82%, rgba(231,165,110,.28) 100%); animation: du-sweep 6s linear infinite; transform-origin: 50% 55%; }
@keyframes du-sweep { to { transform: rotate(360deg); } }
.du-topo { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.du-drone-slot { position: absolute; left: 50%; top: 40%; width: min(280px, 68vw); height: min(280px, 68vw); transform: translate(-50%, -46%); z-index: 1; }
.du-drone-svg { width: 100%; height: 100%; }
.du-drone-shadow { position: absolute; left: 50%; bottom: 8%; width: 42%; height: 16px; margin-left: -21%; background: var(--du-ink); opacity: .15; border-radius: 50%; }
.du-drone-bob { animation: du-bob 3.5s ease-in-out infinite; }
.du-drone-drift { animation: du-drift 5s ease-in-out infinite; }
@keyframes du-drift { 50% { transform: translateX(6px); } }
.dualuse .blades { transform-box: fill-box; transform-origin: center; animation: du-spin .18s linear infinite; }
.dualuse .r2 .blades, .dualuse .r4 .blades { animation-direction: reverse; }
.dualuse .led { transform-box: fill-box; transform-origin: center; animation: du-led 1.2s steps(1, end) infinite; }
@keyframes du-led { 50% { opacity: .15; } }
.du-drone-drift.is-rolling { animation: du-roll .9s ease-in-out; }
@keyframes du-roll { to { transform: rotate(360deg); } }
.du-hud { position: absolute; z-index: 2; font: 500 11px/1 "JetBrains Mono", monospace; letter-spacing: .12em; color: var(--du-ink); }
.du-hud-tl { top: 10px; left: 12px; } .du-hud-tr { top: 10px; right: 12px; }
.du-hud-bl { top: 32px; left: 12px; } .du-hud-br { top: 32px; right: 12px; }
.du-hud-live { top: 50px; right: 12px; display: inline-flex; align-items: center; gap: 6px; color: var(--du-orange-ink); }
.du-flight { opacity: 0; }
.du-flight.is-flying { opacity: 1; }
.du-hud-live i { width: 8px; height: 8px; border-radius: 50%; background: var(--du-field); display: block; }
.du-flight { position: fixed; z-index: 24; width: 72px; right: 14px; top: 88px; pointer-events: none; }
.du-flight-drone { width: 72px; height: 72px; pointer-events: auto; }
.du-toast { position: fixed; z-index: 80; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--du-ink); color: var(--du-white); padding: 12px 14px; }
.du-lens { display: flex; flex-direction: column; min-height: 0; aspect-ratio: auto; background: var(--du-ink); color: var(--du-white); position: relative; overflow: hidden; transition: transform .2s ease; }
.du-lens-art { aspect-ratio: 3/2; overflow: hidden; }
.du-lens-art svg { width: 100%; height: 100%; display: block; }
.du-lens .du-lens-body { position: static; inset: auto; padding: 14px; background: var(--du-ink); }
.du-lens h3, .du-lens p { color: var(--du-white); }
.du-lens .du-prize { color: var(--du-orange); }
.du-lens:hover, .du-lens:focus-within, .du-lens.is-live { transform: translateY(-4px); }
.du-wordmark { font-family: Anton, Impact, sans-serif; font-size: 28px; line-height: 1; color: var(--du-ink); text-transform: uppercase; }
.du-wordmark.is-compact { font-size: 16px; }
.du-logo-box { display: grid; place-items: center; min-height: 64px; background: var(--du-white); padding: 8px 10px; }
.du-podium { display: flex; align-items: flex-end; gap: 10px; min-height: 280px; }
.du-pod { flex: 1; height: 250px; display: flex; flex-direction: column; justify-content: flex-end; background: transparent; min-height: 0; padding: 0; }
.du-pod .du-mono { color: var(--du-ink); margin-bottom: 8px; }
.du-pod-bar { display: flex; justify-content: center; align-items: flex-start; padding-top: 10px; background: var(--du-ink); }
.du-pod.is-first .du-pod-bar { height: 100%; background: var(--du-field); }
.du-pod.is-second .du-pod-bar { height: 70%; }
.du-pod.is-third .du-pod-bar { height: 50%; }
.du-pod-bar b { color: var(--du-white); font-family: Anton, Impact, sans-serif; font-weight: 400; font-size: clamp(28px, 4vw, 64px); line-height: .9; }
html.du-can-move .du-pod-bar { transform: scaleY(0); transform-origin: bottom; }
html.du-can-move .du-podium.is-risen .is-third .du-pod-bar { transform: scaleY(1); transition: transform .55s ease; }
html.du-can-move .du-podium.is-risen .is-second .du-pod-bar { transform: scaleY(1); transition: transform .55s ease .12s; }
html.du-can-move .du-podium.is-risen .is-first .du-pod-bar { transform: scaleY(1); transition: transform .55s ease .24s; }
.du-people { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; align-items: start; }
.du-person { max-width: none; width: 100%; aspect-ratio: 4/5; background: var(--du-paper); color: var(--du-ink); border: 1.5px solid var(--du-ink); perspective: 900px; }
.du-person.is-filtered { display: none; }
.du-person-inner { transform-style: preserve-3d; -webkit-transform-style: preserve-3d; transition: transform 450ms ease; }
.du-face { position: absolute; inset: 0; overflow: visible; backface-visibility: hidden; -webkit-backface-visibility: hidden; background: var(--du-paper); }
.du-face-back { transform: rotateY(180deg); background: var(--du-ink); color: var(--du-white); }
.du-face-clip { position: absolute; inset: 0; overflow: hidden; display: flex; flex-direction: column; }
.du-person-media { height: 70%; flex: none; position: relative; background: var(--du-ink); container-type: inline-size; }
.du-person-media .du-photo { width: 100%; height: 100%; object-fit: cover; display: block; }
.du-person-meta { height: 30%; position: relative; display: flex; flex-direction: column; justify-content: center; padding: 6px 46px 6px 10px; background: var(--du-paper); }
.du-person-meta strong { font-family: Archivo, sans-serif; font-weight: 700; font-size: 16px; line-height: 1.15; letter-spacing: 0; text-transform: none; color: var(--du-ink); }
.du-person-tagline { color: var(--du-orange-ink); }
.du-also { color: var(--du-brown); letter-spacing: .06em; }
.du-person .du-li { position: absolute; right: 4px; bottom: 4px; width: 44px; height: 44px; min-height: 44px; padding: 0; display: grid; place-items: center; background: var(--du-ink); color: var(--du-white); }
.du-mono-face { width: 100%; height: 100%; display: grid; place-items: center; position: relative; background-color: var(--du-ink); background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 14px 14px; }
.du-mono-face b { font-family: Anton, Impact, sans-serif; font-weight: 400; color: var(--du-orange); font-size: 64px; font-size: 40cqw; line-height: .85; position: relative; z-index: 1; }
.du-mono-face img { position: absolute; width: 46%; right: 8%; bottom: 22%; opacity: .08; filter: none; }
.du-mono-face .du-mono { position: absolute; left: 8px; right: 8px; bottom: 8px; color: var(--du-orange); z-index: 1; }
.du-back-clip { padding: 12px; gap: 8px; color: var(--du-white); justify-content: flex-end; }
.du-back-clip p, .du-back-clip li { color: var(--du-white); }
.du-ticks { list-style: none; padding: 0; margin: 0; }
.du-ticks li { position: relative; padding-left: 18px; margin: 0 0 6px; }
.du-ticks li::before { content: ""; position: absolute; left: 0; top: .45em; width: 8px; height: 5px; border-left: 2px solid var(--du-orange); border-bottom: 2px solid var(--du-orange); transform: rotate(-45deg); }
.du-chiprow { display: flex; flex-wrap: wrap; gap: 6px; }
.du-chiprow span, .du-rolebadges span { border: 1.5px solid currentColor; padding: 4px 7px; font: 500 11px/1.2 "JetBrains Mono", monospace; letter-spacing: .06em; text-transform: uppercase; }
.du-rolebadges { display: flex; flex-wrap: wrap; gap: 6px; }
.du-more { align-self: flex-start; background: var(--du-field); color: var(--du-ink); border-color: var(--du-ink); }
.du-faq summary { justify-content: space-between; gap: 12px; list-style: none; }
.du-faq summary::-webkit-details-marker { display: none; }
.du-faq summary::after { content: "+"; margin-left: auto; font-family: Anton, Impact, sans-serif; font-size: 32px; line-height: 1; transition: transform .2s ease; }
.du-faq details[open] summary::after { transform: rotate(45deg); }
.du-final-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0; }
.du-search { display: block; width: min(100%, 560px); min-height: 52px; margin: 8px 0 22px; border: 2px solid var(--du-ink); background: var(--du-white); color: var(--du-ink); padding: 8px 12px; font: 17px/1.4 Archivo, sans-serif; }
.du-drawer {
  position: fixed; inset: 0; z-index: 60;
  --du-forest: #272B1D;
  --du-field: #272B1D;
  --du-rust: #8B4A28;
  --du-cream: #F3EADC;
  --du-peach: #E7A56E;
  --du-orange: #E7A56E;
  --du-orange-ink: #8B4A28;
  --du-ink: #1C1C14;
  --du-paper: #F3EADC;
  --du-brown: #3a312b;
  --du-white: #FFFFFF;
}
.du-drawer-scrim { position: absolute; inset: 0; background: rgba(17, 21, 24, 0.46); }
.du-drawer-panel {
  position: absolute; left: 0; right: 0; bottom: 0; max-height: 86svh; overflow: auto;
  background: rgba(243, 234, 220, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: #1C1C14;
  border-top: 3px solid #1C1C14;
  padding: 12px 16px 28px;
}
.du-drawer-panel,
.du-drawer-panel p,
.du-drawer-panel li,
.du-drawer-panel h2,
.du-drawer-panel h3,
.du-drawer-panel blockquote,
.du-drawer-panel strong { color: #111518; }
.du-detail h2 {
  font-family: Archivo, sans-serif;
  font-weight: 700;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-transform: none;
  color: #111518;
}
.du-detail p, .du-detail li, .du-detail blockquote { color: #111518; font-size: 16.5px; line-height: 1.55; }
.du-detail .du-brown { color: #3a312b; }
.du-detail .du-fact { border-left: 4px solid var(--du-orange); padding-left: 12px; }
.du-detail-media { aspect-ratio: 4/5; max-width: 280px; background: var(--du-ink); margin-bottom: 12px; }
.du-detail-media .du-photo, .du-detail-media .du-mono-face { width: 100%; height: 100%; object-fit: cover; }
.du-detail-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.du-lock-tag { display: block; margin-bottom: 6px; color: var(--du-orange-ink); }
.du-ink .du-lock-tag { color: var(--du-orange); }
h2.is-locked { padding: 8px 10px; background-image: linear-gradient(var(--du-orange), var(--du-orange)), linear-gradient(var(--du-orange), var(--du-orange)), linear-gradient(var(--du-orange), var(--du-orange)), linear-gradient(var(--du-orange), var(--du-orange)); background-repeat: no-repeat; background-size: 16px 3px, 3px 16px, 16px 3px, 3px 16px; background-position: left top, left top, right bottom, right bottom; }
.du-drop { background: var(--du-ink); color: var(--du-orange); padding: 10px 16px; }
@media (min-width: 900px) {
  .du-hero h1 { font-size: clamp(52px, 5.2vw, 96px); }
  .du-hero-grid { grid-template-columns: minmax(0, 1fr) 520px; align-items: center; }
  .du-hero-vf { grid-column: 2; grid-row: 1 / span 2; min-height: 560px; }
  .du-hero-actions { grid-column: 1; }
  .du-drawer-panel { left: auto; top: 0; bottom: 0; width: min(520px, 100%); max-height: none; border-top: 0; border-left: 3px solid var(--du-ink); }
  .du-profile .du-detail { display: grid; grid-template-columns: 280px 1fr; column-gap: 28px; align-items: start; }
  .du-profile .du-detail-media { grid-row: 1 / span 12; }
}
@media (max-width: 1439px) {
  .du-flight { display: none !important; }
}
@media (max-width: 799px) {
  .du-people .du-person { width: 100%; }
}
@media (hover: hover) {
  .du-lens:hover .flames path, .du-lens:focus-within .flames path, .du-lens.is-live .flames path { transform-box: fill-box; transform-origin: bottom; animation: du-flicker .9s ease-in-out infinite alternate; }
  .du-lens:hover .f2, .du-lens.is-live .f2 { animation-delay: .12s; }
  .du-lens:hover .f3, .du-lens.is-live .f3 { animation-delay: .24s; }
  .du-lens:hover .f4, .du-lens.is-live .f4 { animation-delay: .36s; }
  .du-lens:hover .smoke path, .du-lens.is-live .smoke path { animation: du-smoke 3s linear infinite; }
  .du-lens:hover .beacon line, .du-lens.is-live .beacon line { animation: du-blink .6s steps(1, end) infinite; }
  .du-lens:hover .p1, .du-lens.is-live .p1 { offset-path: path("M0 130 Q75 160 140 110 Q260 170 320 110 Q420 165 480 125"); animation: du-along 2.4s linear infinite; }
  .du-lens:hover .p2, .du-lens.is-live .p2 { offset-path: path("M0 160 Q75 190 150 140 Q260 200 330 140 Q420 195 480 155"); animation: du-along 2.4s linear infinite 1.2s; }
  .du-lens:hover .bolt, .du-lens.is-live .bolt { transform-box: fill-box; transform-origin: center; animation: du-bolt 1.2s ease-in-out infinite; }
  .du-lens:hover .waves .w1, .du-lens.is-live .waves .w1 { animation: du-wave 1.8s ease-in-out infinite; }
  .du-lens:hover .waves .w2, .du-lens.is-live .waves .w2 { animation: du-wave 1.8s ease-in-out infinite .3s; }
  .du-lens:hover .waves .w3, .du-lens.is-live .waves .w3 { animation: du-wave 1.8s ease-in-out infinite .6s; }
  .du-lens:hover .trolley, .du-lens.is-live .trolley { animation: du-trolley 4s ease-in-out infinite alternate; }
  .du-lens:hover .box, .du-lens.is-live .box { animation: du-box 1.2s ease-in-out infinite; }
  .du-lens:hover .ship, .du-lens.is-live .ship { transform-origin: 300px 250px; animation: du-rock 3s ease-in-out infinite alternate; }
  .du-lens:hover .water, .du-lens.is-live .water { animation: du-water 3s linear infinite alternate; }
  .du-lens:hover .q, .du-lens.is-live .q { transform-box: fill-box; transform-origin: center; animation: du-wobble 2.2s ease-in-out infinite alternate; }
  .du-lens:hover .brackets, .du-lens.is-live .brackets { animation: du-brackets 2s ease-in-out infinite; }
}
@keyframes du-flicker { from { transform: scaleY(.92); } to { transform: scaleY(1.06); } }
@keyframes du-smoke { to { transform: translateY(-8px); opacity: .05; } }
@keyframes du-blink { 50% { opacity: .2; } }
@keyframes du-along { to { offset-distance: 100%; } }
@keyframes du-bolt { 50% { transform: scale(1.12); } }
@keyframes du-wave { 0%, 100% { opacity: .15; } 45% { opacity: 1; } }
@keyframes du-trolley { to { transform: translateX(60px); } }
@keyframes du-box { 50% { transform: translateY(2px); } }
@keyframes du-rock { to { transform: rotate(1deg); } }
@keyframes du-water { to { transform: translateX(12px); } }
@keyframes du-wobble { from { transform: rotate(-6deg); } to { transform: rotate(4deg); } }
@keyframes du-brackets { 50% { transform: scale(1.04); } }
.du-paused .blades, .du-paused .led, .du-paused .du-radar::after, .du-paused .du-lens * { animation-play-state: paused !important; }
@media (prefers-reduced-motion: reduce) {
  .du-drone-bob, .du-drone-drift, .blades, .led, .du-radar::after, .du-flight, .du-lens, .du-lens * { animation: none !important; }
  .du-motion .du-pod-bar { transform: none; }
}
@media print {
  .du-face-back, .du-flight, .du-drawer, .du-radar::after { display: none !important; }
  .du-person-inner, .du-face-front { transform: none !important; }
}