/* Concept-only homepage styles. Scoped to index-concept.html so the live index.html remains untouched. */
.home-concept-page {
  --concept-green: #05d79f;
  --concept-border: rgba(94, 255, 203, 0.18);
  --concept-panel: rgba(2, 39, 29, 0.72);
  background:
    radial-gradient(circle at 22% 24%, rgba(0, 192, 139, 0.17), transparent 32rem),
    radial-gradient(circle at 76% 22%, rgba(0, 112, 74, 0.2), transparent 28rem),
    #020806;
}

.home-concept-page .site-header {
  background: rgba(0, 8, 6, 0.88);
  backdrop-filter: blur(18px);
}

.concept-hero {
  position: relative;
  min-height: calc(100svh - 74px);
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  background: #020806;
}

.concept-hero::before,
.concept-hero::after,
.concept-hero__media {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.concept-hero__media {
  z-index: -4;
  background:
    linear-gradient(90deg, rgba(2, 8, 6, 0.95) 0%, rgba(2, 8, 6, 0.78) 32%, rgba(2, 8, 6, 0.42) 62%, rgba(2, 8, 6, 0.84) 100%),
    linear-gradient(180deg, rgba(2, 8, 6, 0.3), rgba(0, 46, 32, 0.78)),
    url("assets/images/concept/koepd-home-hero-player.png") center 42% / cover no-repeat;
  opacity: 0.52;
  filter: saturate(1.04) contrast(1.05);
}

.concept-hero::before {
  z-index: -3;
  background:
    radial-gradient(circle at 70% 48%, rgba(0, 214, 153, 0.34), transparent 22rem),
    radial-gradient(circle at 35% 64%, rgba(0, 150, 104, 0.22), transparent 26rem);
  mix-blend-mode: screen;
}

.concept-hero::after {
  z-index: -2;
  background-image:
    linear-gradient(rgba(131, 255, 218, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 255, 218, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, transparent 72%, rgba(0, 50, 34, 0.72) 100%);
  background-size: 88px 88px, 88px 88px, 100% 100%;
  mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 78%, transparent 100%);
}

.concept-hero__inner {
  width: min(1480px, calc(100% - 7vw));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 0.9fr);
  gap: clamp(2.5rem, 6vw, 7rem);
  align-items: center;
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.concept-hero__copy { max-width: 720px; }

.concept-hero__copy h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(4.6rem, 7.4vw, 8.2rem);
  line-height: 0.88;
  letter-spacing: 0;
}

.concept-hero__copy .lead {
  max-width: 670px;
  margin-top: 1.8rem;
  font-size: clamp(1.18rem, 1.45vw, 1.45rem);
  line-height: 1.65;
  color: rgba(235, 255, 250, 0.84);
}

.concept-hero__actions { margin-top: 2.4rem; }

.concept-hero__feature {
  position: relative;
  display: grid;
  gap: 1rem;
  padding: clamp(1rem, 1.4vw, 1.35rem);
  color: inherit;
  text-decoration: none;
  border: 1px solid var(--concept-border);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(7, 70, 51, 0.88), rgba(1, 18, 13, 0.78)), rgba(0, 25, 18, 0.76);
  box-shadow: 0 38px 110px rgba(0, 160, 105, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  overflow: hidden;
  transform: translateZ(0);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.concept-hero__feature::before {
  content: "";
  position: absolute;
  inset: -30% -20%;
  background: radial-gradient(circle at 72% 22%, rgba(0, 255, 181, 0.24), transparent 18rem);
  pointer-events: none;
}

.concept-hero__feature:hover,
.concept-hero__feature:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(104, 255, 211, 0.38);
  box-shadow: 0 44px 130px rgba(0, 192, 139, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

.concept-hero__feature img {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  display: block;
  object-fit: cover;
  object-position: center center;
  border-radius: 18px;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.4);
}

.concept-feature__meta,
.concept-feature__title { position: relative; z-index: 1; }

.concept-feature__meta {
  color: var(--concept-green);
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.concept-feature__title {
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-size: clamp(1.8rem, 3vw, 3.35rem);
  font-weight: 900;
  line-height: 1;
}

.concept-band {
  position: relative;
  padding: clamp(4rem, 8vw, 7rem) 0;
  background: radial-gradient(circle at 20% 0%, rgba(0, 189, 132, 0.12), transparent 28rem), linear-gradient(180deg, rgba(1, 37, 27, 0.7), rgba(0, 10, 7, 0.88));
}

.concept-band--tight { padding-top: clamp(4rem, 6vw, 5.5rem); }
.concept-band--split { background: radial-gradient(circle at 72% 36%, rgba(0, 207, 148, 0.13), transparent 26rem), linear-gradient(180deg, rgba(0, 14, 10, 0.92), rgba(1, 36, 26, 0.74)); }
.concept-band--quiet { background: rgba(0, 12, 8, 0.92); }

.concept-feature-grid,
.concept-text-split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.8fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.concept-feature-grid--reverse { grid-template-columns: minmax(360px, 0.8fr) minmax(0, 0.9fr); }

.concept-feature-grid h2,
.concept-text-split h2,
.concept-band h2 {
  margin: 0 0 1.2rem;
  font-size: clamp(2.8rem, 5vw, 5.2rem);
  line-height: 0.96;
}

.concept-feature-grid p,
.concept-text-split p,
.concept-link-card p { color: rgba(234, 255, 248, 0.78); }
.concept-inline-actions { margin-top: 2rem; }

.concept-poster-card,
.concept-story-card,
.concept-link-card {
  color: inherit;
  text-decoration: none;
  border: 1px solid var(--concept-border);
  background: var(--concept-panel);
  box-shadow: 0 28px 80px rgba(0, 155, 105, 0.15);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.concept-poster-card:hover,
.concept-poster-card:focus-visible,
.concept-story-card:hover,
.concept-story-card:focus-visible,
.concept-link-card:hover,
.concept-link-card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(104, 255, 211, 0.36);
  box-shadow: 0 34px 92px rgba(0, 188, 132, 0.22);
}

.concept-poster-card,
.concept-story-card {
  display: block;
  padding: clamp(0.75rem, 1.4vw, 1.1rem);
  border-radius: 24px;
  overflow: hidden;
}

.concept-poster-card img,
.concept-story-card img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 17px;
}

.concept-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.concept-link-card {
  display: grid;
  align-content: start;
  min-height: 190px;
  padding: clamp(1.35rem, 2vw, 1.8rem);
  border-radius: 22px;
}

.concept-link-card span {
  display: block;
  color: #effffb;
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-size: clamp(1.55rem, 2.4vw, 2.2rem);
  font-weight: 900;
  line-height: 1;
}

.concept-link-card p { margin: 1rem 0 0; }

.concept-text-split {
  align-items: start;
  border-top: 1px solid rgba(226, 255, 248, 0.12);
  padding-top: clamp(2rem, 4vw, 3rem);
}

@media (max-width: 980px) {
  .concept-hero { min-height: auto; }
  .concept-hero__inner,
  .concept-feature-grid,
  .concept-feature-grid--reverse,
  .concept-text-split { grid-template-columns: 1fr; }
  .concept-hero__inner {
    width: min(100% - 2rem, 760px);
    padding: 4rem 0 3rem;
    gap: 2.3rem;
  }
  .concept-hero__copy h1 { font-size: clamp(3.8rem, 16vw, 6rem); }
  .concept-hero__feature { order: 2; }
  .concept-hero__feature img {
    aspect-ratio: 4 / 3;
    object-position: center center;
  }
  .concept-card-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .concept-hero__media {
    background: linear-gradient(180deg, rgba(2, 8, 6, 0.82) 0%, rgba(2, 8, 6, 0.96) 58%, rgba(2, 8, 6, 1) 100%), url("assets/images/concept/koepd-home-hero-player.png") center top / cover no-repeat;
    opacity: 0.38;
  }
  .concept-hero::after { background-size: 54px 54px, 54px 54px, 100% 100%; }
  .concept-hero__inner {
    width: min(100% - 1.25rem, 520px);
    padding-top: 2.6rem;
  }
  .concept-hero__copy .lead { font-size: 1rem; }
  .concept-hero__actions,
  .concept-inline-actions { display: grid; gap: 0.8rem; }
  .concept-hero__actions .btn,
  .concept-inline-actions .btn { width: 100%; justify-content: center; }
  .concept-band { padding: 3.25rem 0; }
  .concept-feature-grid h2,
  .concept-text-split h2,
  .concept-band h2 { font-size: clamp(2.5rem, 15vw, 3.8rem); }
  .concept-link-card { min-height: 0; }
}


/* Launch-graphic inspired hero experiment */
.home-concept-page .concept-hero--launch {
  min-height: calc(100svh - 74px);
  padding: clamp(2.8rem, 5vw, 4.8rem) 0 clamp(2rem, 4vw, 3.6rem);
  align-items: stretch;
}

.home-concept-page .concept-hero--launch .concept-hero__media {
  background:
    radial-gradient(circle at 50% 28%, rgba(0, 255, 181, 0.28), transparent 20rem),
    radial-gradient(circle at 8% 70%, rgba(0, 214, 153, 0.16), transparent 18rem),
    radial-gradient(circle at 88% 64%, rgba(0, 214, 153, 0.15), transparent 18rem),
    linear-gradient(180deg, rgba(0, 5, 4, 0.5), rgba(0, 18, 12, 0.94)),
    url("assets/images/concept/koepd-home-hero-player.png") center 46% / cover no-repeat;
  opacity: 0.72;
  filter: saturate(1.14) contrast(1.1);
}

.home-concept-page .concept-hero--launch::before {
  background:
    linear-gradient(115deg, transparent 16%, rgba(0, 255, 181, 0.23) 49%, transparent 51%),
    radial-gradient(circle at 50% 43%, rgba(0, 255, 181, 0.34), transparent 24rem);
  opacity: 0.75;
}

.home-concept-page .concept-hero--launch::after {
  background-image:
    linear-gradient(rgba(131, 255, 218, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 255, 218, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(0, 0, 0, 0.32), rgba(0, 31, 21, 0.72));
  background-size: 86px 86px, 86px 86px, 100% 100%;
  mask-image: none;
}

.concept-launch {
  position: relative;
  z-index: 1;
  width: min(1560px, calc(100% - 5vw));
  margin: 0 auto;
  min-height: inherit;
  display: grid;
  grid-template-rows: auto minmax(280px, 1fr) auto;
  align-items: center;
  gap: clamp(1.4rem, 2.4vw, 2.4rem);
}

.concept-launch__headline {
  max-width: 1180px;
  margin: 0 auto;
  text-align: center;
}

.concept-launch__headline img {
  width: clamp(130px, 13vw, 230px);
  height: auto;
  margin: 0 auto clamp(0.8rem, 1.2vw, 1.1rem);
  filter: drop-shadow(0 0 28px rgba(0, 222, 160, 0.32));
}

.concept-launch__headline .eyebrow {
  color: #eafffa;
  text-shadow: 0 0 22px rgba(0, 255, 181, 0.42);
}

.concept-launch__headline h1 {
  margin: 0;
  font-size: clamp(4rem, 8.4vw, 10.8rem);
  line-height: 0.82;
  letter-spacing: 0;
  text-transform: uppercase;
  text-wrap: balance;
  color: #f1fffb;
  text-shadow: 0 0 34px rgba(0, 214, 153, 0.22);
}

.concept-launch__headline h1 span {
  display: block;
  color: #f1fffb;
}

.concept-launch__headline h1::first-line {
  color: #f1fffb;
}

.concept-launch__headline h1 {
  background: linear-gradient(90deg, #f4fffc 0 34%, #00d69b 42% 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.concept-launch__headline p:not(.eyebrow) {
  max-width: 620px;
  margin: clamp(1rem, 1.4vw, 1.4rem) auto 0;
  color: rgba(239, 255, 251, 0.88);
  font-size: clamp(1rem, 1.35vw, 1.32rem);
  line-height: 1.55;
}

.concept-launch__headline .concept-hero__actions {
  justify-content: center;
  margin-top: clamp(1.2rem, 1.8vw, 1.8rem);
}

.concept-launch__screen {
  position: relative;
  width: min(1120px, 82vw);
  margin: 0 auto;
  display: block;
  color: inherit;
  text-decoration: none;
  border: 1px solid rgba(105, 255, 211, 0.28);
  border-radius: clamp(18px, 2vw, 32px);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 30px 120px rgba(0, 255, 181, 0.2),
    0 70px 180px rgba(0, 0, 0, 0.52);
  transform: perspective(1400px) rotateX(2deg);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.concept-launch__screen:hover,
.concept-launch__screen:focus-visible {
  transform: perspective(1400px) rotateX(0deg) translateY(-4px);
  border-color: rgba(105, 255, 211, 0.5);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06) inset,
    0 32px 130px rgba(0, 255, 181, 0.28),
    0 78px 190px rgba(0, 0, 0, 0.55);
}

.concept-launch__screen img {
  width: 100%;
  aspect-ratio: 16 / 7.6;
  display: block;
  object-fit: cover;
  object-position: center 48%;
  filter: saturate(1.05) contrast(1.04);
}

.concept-launch__screen::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 9, 6, 0.68), transparent 34%, rgba(0, 9, 6, 0.28)),
    linear-gradient(180deg, transparent 48%, rgba(0, 8, 6, 0.72));
  pointer-events: none;
}

.concept-screen__copy {
  position: absolute;
  z-index: 1;
  left: clamp(1.2rem, 3vw, 2.8rem);
  bottom: clamp(1.1rem, 2.5vw, 2.5rem);
  display: grid;
  gap: 0.45rem;
  max-width: min(480px, 72%);
}

.concept-screen__copy strong {
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-size: clamp(2rem, 4.2vw, 4.5rem);
  line-height: 0.9;
}

.concept-screen__copy small {
  color: rgba(239, 255, 251, 0.82);
  font-size: clamp(0.95rem, 1.2vw, 1.15rem);
}

.concept-launch__cards {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.8rem;
  width: min(1120px, 82vw);
  margin: 0 auto;
}

.concept-launch__cards a {
  min-height: 112px;
  display: grid;
  align-content: end;
  gap: 0.45rem;
  padding: 1rem;
  color: inherit;
  text-decoration: none;
  border: 1px solid rgba(74, 255, 199, 0.28);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(4, 54, 39, 0.58), rgba(0, 16, 11, 0.78));
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.24);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.concept-launch__cards a:hover,
.concept-launch__cards a:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(107, 255, 214, 0.55);
  background: linear-gradient(180deg, rgba(4, 74, 53, 0.78), rgba(0, 24, 17, 0.9));
}

.concept-launch__cards span {
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-size: 1.2rem;
  font-weight: 900;
  line-height: 1;
}

.concept-launch__cards small {
  color: rgba(235, 255, 249, 0.72);
  line-height: 1.35;
}

@media (max-width: 980px) {
  .home-concept-page .concept-hero--launch {
    min-height: auto;
    padding-top: 2.4rem;
  }

  .concept-launch {
    width: min(100% - 1.5rem, 760px);
    grid-template-rows: auto auto auto;
  }

  .concept-launch__screen,
  .concept-launch__cards {
    width: 100%;
  }

  .concept-launch__screen {
    transform: none;
  }

  .concept-launch__screen img {
    aspect-ratio: 4 / 3;
    object-position: center center;
  }

  .concept-launch__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .concept-launch__headline {
    text-align: left;
  }

  .concept-launch__headline img {
    margin-left: 0;
  }

  .concept-launch__headline h1 {
    font-size: clamp(3.4rem, 18vw, 5.2rem);
  }

  .concept-launch__headline .concept-hero__actions {
    justify-content: stretch;
  }

  .concept-screen__copy {
    max-width: 82%;
  }

  .concept-screen__copy strong {
    font-size: clamp(1.8rem, 11vw, 3.2rem);
  }

  .concept-launch__cards {
    grid-template-columns: 1fr;
  }

  .concept-launch__cards a {
    min-height: 88px;
  }
}



/* Integrated universe hero experiment */
.home-concept-page .concept-hero--universe {
  min-height: calc(100svh - 74px);
  padding: clamp(3rem, 5vw, 5.5rem) 0 clamp(3rem, 5vw, 5.5rem);
  align-items: center;
  background: #020806;
}

.home-concept-page .concept-hero--universe .concept-hero__media {
  background:
    radial-gradient(circle at 78% 46%, rgba(0, 255, 181, 0.24), transparent 24rem),
    radial-gradient(circle at 46% 78%, rgba(0, 174, 123, 0.17), transparent 34rem),
    radial-gradient(circle at 8% 84%, rgba(0, 130, 92, 0.14), transparent 22rem),
    linear-gradient(90deg, rgba(0, 6, 4, 0.98) 0%, rgba(1, 17, 12, 0.96) 44%, rgba(0, 9, 6, 0.92) 100%);
  opacity: 1;
  filter: none;
}

.home-concept-page .concept-hero--universe::before {
  background:
    linear-gradient(118deg, transparent 0 43%, rgba(0, 255, 181, 0.18) 43.2%, transparent 44.1%),
    linear-gradient(158deg, transparent 0 64%, rgba(0, 255, 181, 0.1) 64.3%, transparent 65.1%),
    radial-gradient(circle at 77% 58%, rgba(0, 255, 181, 0.28), transparent 25rem);
  opacity: 0.86;
}

.home-concept-page .concept-hero--universe::after {
  background-image:
    linear-gradient(rgba(131, 255, 218, 0.034) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 255, 218, 0.034) 1px, transparent 1px),
    linear-gradient(180deg, transparent 62%, rgba(0, 38, 27, 0.66) 100%);
  background-size: 76px 76px, 76px 76px, 100% 100%;
  mask-image: linear-gradient(90deg, transparent 0%, #000 10%, #000 98%);
}

.concept-universe {
  position: relative;
  z-index: 1;
  width: min(1580px, calc(100% - 6vw));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(380px, 0.72fr) minmax(620px, 1.28fr);
  gap: clamp(2.5rem, 5vw, 6rem);
  align-items: center;
}

.concept-universe__copy {
  max-width: 620px;
  text-align: left;
}

.concept-universe__copy .eyebrow {
  color: #eafffa;
  text-shadow: 0 0 18px rgba(0, 255, 181, 0.36);
}

.concept-universe__copy h1 {
  margin: 0;
  font-size: clamp(4rem, 6vw, 8rem);
  line-height: 0.84;
  letter-spacing: 0;
  text-transform: uppercase;
}

.concept-universe__copy h1 span,
.concept-universe__copy h1 strong {
  display: block;
}

.concept-universe__copy h1 span {
  color: #f3fffb;
}

.concept-universe__copy h1 strong {
  color: #04d49b;
  text-shadow: 0 0 34px rgba(0, 255, 181, 0.28);
}

.concept-universe__copy .lead {
  max-width: 520px;
  margin-top: 1.5rem;
  color: rgba(237, 255, 250, 0.85);
  font-size: clamp(1.08rem, 1.35vw, 1.34rem);
  line-height: 1.6;
}

.concept-scene {
  position: relative;
  min-height: clamp(520px, 49vw, 760px);
  isolation: isolate;
}

.concept-scene::before {
  content: "";
  position: absolute;
  inset: 3% -6% 4% 5%;
  z-index: -2;
  background:
    radial-gradient(circle at 56% 42%, rgba(0, 255, 181, 0.22), transparent 21rem),
    radial-gradient(circle at 77% 76%, rgba(0, 186, 132, 0.2), transparent 20rem);
  filter: blur(18px);
}

.concept-scene::after {
  content: "";
  position: absolute;
  left: 4%;
  right: 0;
  bottom: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 181, 0.75), rgba(255, 255, 255, 0.5), transparent);
  box-shadow: 0 0 32px rgba(0, 255, 181, 0.55);
  transform: rotate(-1.8deg);
  opacity: 0.62;
}

.concept-scene__player {
  position: absolute;
  z-index: -1;
  right: -5%;
  top: 3%;
  width: min(86%, 920px);
  height: 82%;
  object-fit: cover;
  object-position: center 45%;
  opacity: 0.86;
  filter: saturate(1.08) contrast(1.08) drop-shadow(0 35px 80px rgba(0, 0, 0, 0.55));
  mix-blend-mode: screen;
  -webkit-mask-image: radial-gradient(ellipse at 58% 48%, #000 0 46%, rgba(0,0,0,0.72) 61%, transparent 82%);
  mask-image: radial-gradient(ellipse at 58% 48%, #000 0 46%, rgba(0,0,0,0.72) 61%, transparent 82%);
}

.concept-scene__nav {
  position: absolute;
  top: 10%;
  left: 3%;
  right: 12%;
  display: flex;
  align-items: center;
  gap: clamp(0.7rem, 1.4vw, 1.25rem);
  padding: 0.8rem 1rem;
  color: rgba(245, 255, 252, 0.76);
  font-size: 0.78rem;
  font-weight: 900;
  background: linear-gradient(90deg, rgba(0, 9, 6, 0.68), rgba(4, 51, 37, 0.24), transparent);
  border-top: 1px solid rgba(132, 255, 222, 0.16);
  border-bottom: 1px solid rgba(132, 255, 222, 0.1);
  backdrop-filter: blur(10px);
}

.concept-scene__nav img {
  width: clamp(92px, 10vw, 140px);
  height: auto;
  margin-right: auto;
  filter: drop-shadow(0 0 18px rgba(0, 255, 181, 0.24));
}

.concept-floating,
.concept-phone-glass,
.concept-scene__cards a,
.concept-domain-chip {
  border: 1px solid rgba(108, 255, 214, 0.22);
  background: linear-gradient(145deg, rgba(3, 55, 40, 0.54), rgba(0, 13, 9, 0.38));
  box-shadow: 0 18px 70px rgba(0, 0, 0, 0.34), 0 0 40px rgba(0, 255, 181, 0.1);
  backdrop-filter: blur(16px);
}

.concept-floating {
  position: absolute;
  display: grid;
  gap: 0.28rem;
  padding: 1rem 1.1rem;
  border-radius: 16px;
}

.concept-floating span {
  color: #05d79f;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.concept-floating strong {
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  color: #effffb;
  font-size: clamp(1.1rem, 1.55vw, 1.65rem);
  line-height: 1;
}

.concept-floating small {
  color: rgba(234, 255, 248, 0.68);
}

.concept-floating--welcome {
  left: 5%;
  top: 29%;
  max-width: 300px;
}

.concept-floating--open {
  right: 5%;
  top: 27%;
  min-width: 180px;
}

.concept-floating--live {
  right: 19%;
  bottom: 25%;
  min-width: 190px;
}

.concept-floating--live span {
  color: #ffebe9;
}

.concept-floating--live::before {
  content: "";
  position: absolute;
  top: 1.15rem;
  right: 1rem;
  width: 0.56rem;
  height: 0.56rem;
  border-radius: 999px;
  background: #ff3434;
  box-shadow: 0 0 18px rgba(255, 52, 52, 0.8);
}

.concept-phone-glass {
  position: absolute;
  right: 0;
  bottom: 8%;
  width: clamp(150px, 15vw, 220px);
  min-height: clamp(250px, 25vw, 350px);
  display: grid;
  align-content: start;
  gap: 0.8rem;
  padding: 1rem;
  border-radius: 24px;
  transform: rotate(2.5deg);
}

.concept-phone-glass__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.concept-phone-glass__top img {
  width: 86px;
  height: auto;
}

.concept-phone-glass__top span,
.concept-phone-glass__top span::before,
.concept-phone-glass__top span::after {
  display: block;
  width: 17px;
  height: 2px;
  border-radius: 999px;
  background: #05d79f;
}

.concept-phone-glass__top span {
  position: relative;
}

.concept-phone-glass__top span::before,
.concept-phone-glass__top span::after {
  content: "";
  position: absolute;
  right: 0;
}

.concept-phone-glass__top span::before { top: -6px; }
.concept-phone-glass__top span::after { top: 6px; }

.concept-phone-glass strong {
  margin-top: 1.8rem;
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  line-height: 0.95;
}

.concept-phone-glass small {
  color: rgba(235, 255, 249, 0.72);
}

.concept-phone-glass div:last-child {
  min-height: 78px;
  border-radius: 14px;
  border: 1px solid rgba(108, 255, 214, 0.2);
  background:
    linear-gradient(180deg, rgba(0, 255, 181, 0.12), transparent),
    rgba(1, 26, 18, 0.7);
}

.concept-scene__cards {
  position: absolute;
  left: 2%;
  right: 18%;
  bottom: 8%;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.7rem;
}

.concept-scene__cards a {
  min-height: 108px;
  display: grid;
  align-content: end;
  gap: 0.28rem;
  padding: 0.85rem;
  color: inherit;
  text-decoration: none;
  border-radius: 14px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.concept-scene__cards a:hover,
.concept-scene__cards a:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(113, 255, 215, 0.52);
  background: linear-gradient(145deg, rgba(4, 76, 55, 0.68), rgba(0, 19, 13, 0.56));
  box-shadow: 0 22px 80px rgba(0, 0, 0, 0.42), 0 0 52px rgba(0, 255, 181, 0.18);
}

.concept-scene__cards span {
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-size: clamp(1rem, 1.3vw, 1.22rem);
  font-weight: 900;
  line-height: 1;
}

.concept-scene__cards small {
  color: rgba(235, 255, 249, 0.68);
}

.concept-domain-chip {
  position: absolute;
  left: 27%;
  bottom: 0;
  padding: 0.75rem 2.5rem;
  border-radius: 999px;
  color: #effffb;
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-weight: 900;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

@media (max-width: 1180px) {
  .concept-universe {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .concept-universe__copy {
    max-width: 760px;
  }

  .concept-scene {
    min-height: clamp(540px, 70vw, 720px);
  }
}

@media (max-width: 760px) {
  .home-concept-page .concept-hero--universe {
    padding-top: 2.5rem;
  }

  .concept-universe {
    width: min(100% - 1.25rem, 560px);
  }

  .concept-universe__copy h1 {
    font-size: clamp(3.25rem, 17vw, 5.25rem);
  }

  .concept-universe__copy .lead {
    font-size: 1rem;
  }

  .concept-scene {
    min-height: 620px;
  }

  .concept-scene__player {
    top: 4%;
    right: -22%;
    width: 128%;
    height: 58%;
    object-position: center center;
    opacity: 0.78;
    -webkit-mask-image: linear-gradient(180deg, #000 0 58%, transparent 94%);
    mask-image: linear-gradient(180deg, #000 0 58%, transparent 94%);
  }

  .concept-scene__nav {
    top: 0;
    left: 0;
    right: 0;
  }

  .concept-scene__nav span {
    display: none;
  }

  .concept-floating--welcome {
    left: 0;
    top: 36%;
    max-width: 250px;
  }

  .concept-floating--open {
    right: 0;
    top: 48%;
  }

  .concept-floating--live {
    left: 0;
    right: auto;
    bottom: 24%;
  }

  .concept-phone-glass {
    right: 0;
    bottom: 19%;
    width: 148px;
    min-height: 220px;
  }

  .concept-scene__cards {
    left: 0;
    right: 0;
    bottom: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .concept-scene__cards a {
    min-height: 82px;
  }

  .concept-domain-chip {
    display: none;
  }
}

@media (max-width: 520px) {
  .concept-scene {
    min-height: 660px;
  }

  .concept-floating {
    padding: 0.85rem;
  }

  .concept-floating--open {
    top: 45%;
    min-width: 154px;
  }

  .concept-floating--live {
    display: none;
  }

  .concept-phone-glass {
    display: none;
  }

  .concept-scene__cards {
    grid-template-columns: 1fr;
  }
}


/* Reference-style hero: broad dark scene with left-aligned message and player image integrated. */
.home-concept-page .concept-hero--reference {
  position: relative;
  min-height: calc(100svh - 74px);
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  background: #020806;
}

.home-concept-page .concept-hero--reference::before,
.home-concept-page .concept-hero--reference::after {
  display: none;
}

.home-concept-page .concept-hero--reference::before {
  z-index: -4;
  background:
    radial-gradient(circle at 62% 48%, rgba(0, 212, 151, 0.24), transparent 28rem),
    radial-gradient(circle at 22% 80%, rgba(0, 130, 92, 0.14), transparent 24rem),
    linear-gradient(90deg, #020806 0%, #03110c 46%, #020806 100%);
}

.home-concept-page .concept-hero--reference::after {
  z-index: -1;
  background-image:
    linear-gradient(rgba(131, 255, 218, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 255, 218, 0.03) 1px, transparent 1px),
    linear-gradient(180deg, transparent 62%, rgba(0, 42, 30, 0.68) 100%);
  background-size: 74px 74px, 74px 74px, 100% 100%;
  mask-image: linear-gradient(180deg, transparent 0%, #000 12%, #000 88%, transparent 100%);
}

.concept-reference__image {
  position: absolute;
  z-index: -3;
  inset: 0;
  background: url("assets/images/concept/koepd-home-hero-player.png") center 43% / cover no-repeat;
  opacity: 0.82;
  filter: saturate(1.1) contrast(1.08);
}

.concept-reference__shade {
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 6, 4, 0.96) 0%, rgba(0, 7, 5, 0.82) 24%, rgba(0, 7, 5, 0.34) 58%, rgba(0, 6, 4, 0.56) 100%),
    linear-gradient(180deg, rgba(0, 6, 4, 0.22) 0%, rgba(0, 6, 4, 0.02) 52%, rgba(0, 20, 14, 0.72) 100%);
}

.concept-reference__shade::before {
  display: none;
}

.concept-reference__content {
  width: min(1480px, calc(100% - 7vw));
  margin: 0 auto;
  padding: clamp(5rem, 9vw, 8.5rem) 0 clamp(4rem, 7vw, 7rem);
  color: #f2fffb;
}

.concept-reference__content .eyebrow {
  color: #05d79f;
  text-shadow: 0 0 18px rgba(0, 255, 181, 0.4);
}

.concept-reference__content h1 {
  margin: 0;
  max-width: 640px;
  font-size: clamp(4rem, 6.1vw, 7.8rem);
  line-height: 0.88;
  letter-spacing: 0;
  text-wrap: balance;
}

.concept-reference__content h1 span,
.concept-reference__content h1 strong {
  display: block;
}

.concept-reference__content h1 strong {
  color: #f2fffb;
}

.concept-reference__content p:not(.eyebrow) {
  max-width: 420px;
  margin: 1.35rem 0 0;
  color: rgba(240, 255, 251, 0.86);
  font-size: clamp(1.12rem, 1.45vw, 1.48rem);
  line-height: 1.45;
}

.concept-reference__actions {
  margin-top: 1.7rem;
}

@media (max-width: 980px) {
  .home-concept-page .concept-hero--reference {
    min-height: auto;
  }

  .concept-reference__image {
    background-position: 62% center;
  }

  .concept-reference__shade {
    background:
      linear-gradient(90deg, rgba(0, 6, 4, 0.96) 0%, rgba(0, 7, 5, 0.74) 42%, rgba(0, 6, 4, 0.36) 100%),
      linear-gradient(180deg, rgba(0, 6, 4, 0.16) 0%, rgba(0, 20, 14, 0.76) 100%);
  }

  .concept-reference__content {
    width: min(100% - 2rem, 760px);
    padding: 5rem 0 16rem;
  }
}

@media (max-width: 640px) {
  .concept-reference__image {
    inset: 30% -42% 0 -20%;
    background-size: cover;
    background-position: center bottom;
    opacity: 0.76;
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 74%, transparent 100%);
    mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 74%, transparent 100%);
  }

  .concept-reference__shade {
    background:
      linear-gradient(180deg, rgba(0, 6, 4, 0.98) 0%, rgba(0, 7, 5, 0.78) 42%, rgba(0, 11, 8, 0.86) 100%);
  }

  .concept-reference__content {
    width: min(100% - 1.25rem, 520px);
    padding: 3.2rem 0 20rem;
  }

  .concept-reference__content h1 {
    font-size: clamp(3.3rem, 16vw, 5.25rem);
  }

  .concept-reference__content p:not(.eyebrow) {
    font-size: 1rem;
  }

  .concept-reference__actions {
    display: grid;
    gap: 0.8rem;
  }

  .concept-reference__actions .btn {
    width: 100%;
    justify-content: center;
  }
}


/* Left-side logo lockup for the reference concept hero */
.concept-reference__logo {
  display: block;
  width: clamp(280px, 34vw, 620px);
  height: auto;
  margin: 0 0 clamp(2rem, 3vw, 3rem);
  filter: drop-shadow(0 0 34px rgba(0, 255, 181, 0.22));
}

.home-concept-page .concept-hero--reference .concept-reference__content h1 {
  max-width: 760px;
  font-size: clamp(3.6rem, 5.6vw, 7.2rem);
  line-height: 0.92;
}

.home-concept-page .concept-hero--reference .concept-reference__content p:not(.eyebrow) {
  max-width: 760px;
  font-size: clamp(1.05rem, 1.32vw, 1.32rem);
  line-height: 1.62;
}

.home-concept-page .concept-hero--reference .concept-reference__actions {
  margin-top: 2.1rem;
}

@media (max-width: 640px) {
  .concept-reference__logo {
    width: min(86vw, 390px);
    margin-bottom: 1.7rem;
  }

  .home-concept-page .concept-hero--reference .concept-reference__content h1 {
    font-size: clamp(3.1rem, 15vw, 4.8rem);
  }
}


/* Keep the concept hero copy locked to one clean left edge. */
.home-concept-page .concept-hero--reference .concept-reference__logo,
.home-concept-page .concept-hero--reference .concept-reference__content h1,
.home-concept-page .concept-hero--reference .concept-reference__content p:not(.eyebrow),
.home-concept-page .concept-hero--reference .concept-reference__actions {
  margin-left: 0;
  padding-left: 0;
}


/* Align the text visually with the K in the logo artwork. */
.home-concept-page .concept-hero--reference .concept-reference__content h1,
.home-concept-page .concept-hero--reference .concept-reference__content p:not(.eyebrow),
.home-concept-page .concept-hero--reference .concept-reference__actions {
  transform: translateX(-10px);
}

@media (max-width: 640px) {
  .home-concept-page .concept-hero--reference .concept-reference__content h1,
  .home-concept-page .concept-hero--reference .concept-reference__content p:not(.eyebrow),
  .home-concept-page .concept-hero--reference .concept-reference__actions {
    transform: translateX(-4px);
  }
}