.concept-three {
  --night: #071013;
  --night-deep: #030708;
  --panel: #0b181c;
  --grid-line: rgba(203, 226, 231, 0.14);
  --text: #ebf1ee;
  --dim: #95a8aa;
  --acid: #f05aa6;
  --cyan: #58bed2;
  --lynx: #a28ffb;
  --heat: #f05aa6;
  background: var(--night);
  color: var(--text);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
}

.concept-three::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  opacity: 0.15;
  pointer-events: none;
}

.concept-three .field-header {
  position: sticky;
  z-index: 50;
  top: 0;
  display: grid;
  min-height: 84px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 30px;
  padding: 14px clamp(18px, 4vw, 58px);
  border-bottom: 1px solid var(--grid-line);
  background: rgba(3, 7, 8, 0.92);
  backdrop-filter: blur(15px);
}

.concept-three .field-brand img {
  width: clamp(140px, 15vw, 200px);
}

.concept-three .field-header__descriptor {
  margin: 0;
  color: var(--dim);
  font: 700 0.65rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.09em;
  text-align: center;
  text-transform: uppercase;
}

.concept-three .field-nav {
  display: flex;
  justify-content: flex-end;
  gap: clamp(18px, 3vw, 38px);
  font: 800 0.7rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.concept-three .field-nav a {
  text-decoration: none;
}

.concept-three .field-nav a:hover {
  color: var(--acid);
}

.concept-three .field-code {
  margin: 0;
  color: var(--acid);
  font: 800 0.68rem/1.35 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.concept-three h1,
.concept-three h2,
.concept-three h3 {
  margin-top: 0;
  text-wrap: balance;
}

.concept-three .field-hero {
  position: relative;
  display: grid;
  min-height: calc(100vh - 128px);
  grid-template-columns: minmax(330px, 0.74fr) minmax(570px, 1.26fr);
  align-items: center;
  gap: clamp(35px, 6vw, 96px);
  overflow: hidden;
  padding: clamp(52px, 8vw, 110px) clamp(18px, 4vw, 58px);
  background:
    radial-gradient(circle at 76% 45%, rgba(88, 190, 210, 0.12), transparent 35%),
    linear-gradient(90deg, rgba(3, 7, 8, 0.98), rgba(7, 16, 19, 0.83));
}

.concept-three .field-hero::after {
  position: absolute;
  right: -80px;
  bottom: -130px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(240, 90, 166, 0.3);
  border-radius: 50%;
  box-shadow: 0 0 0 34px rgba(240, 90, 166, 0.025), 0 0 0 68px rgba(240, 90, 166, 0.018);
  content: "";
  pointer-events: none;
}

.concept-three .field-hero__copy {
  position: relative;
  z-index: 2;
}

.concept-three .field-hero h1 {
  max-width: 640px;
  margin: 20px 0 25px;
  font-size: clamp(3.2rem, 7vw, 8.5rem);
  font-weight: 820;
  line-height: 0.82;
  letter-spacing: -0.075em;
  text-transform: uppercase;
}

.concept-three .field-hero__lead {
  max-width: 560px;
  margin: 0;
  color: #b7c4c5;
  font-size: clamp(1.05rem, 1.65vw, 1.3rem);
  line-height: 1.55;
}

.concept-three .field-button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  gap: 30px;
  margin-top: 36px;
  padding: 13px 16px;
  border: 1px solid var(--acid);
  background: rgba(240, 90, 166, 0.07);
  color: var(--acid);
  font: 800 0.72rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.concept-three .field-button span {
  font-size: 1.1rem;
}

.concept-three .spectrum-stage {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 620px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: center;
  gap: 10px;
}

.concept-three .spectrum-card {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: #0d171a;
  color: var(--text);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  text-decoration: none;
  transition: transform 220ms ease, filter 220ms ease;
}

.concept-three .spectrum-card:nth-child(1) {
  transform: translateY(48px);
}

.concept-three .spectrum-card:nth-child(3) {
  transform: translateY(-38px);
}

.concept-three .spectrum-card:hover {
  filter: brightness(1.13);
  transform: translateY(0);
}

.concept-three .spectrum-card::before {
  position: absolute;
  z-index: 4;
  top: 0;
  right: 0;
  left: 0;
  height: 5px;
  background: var(--camera-accent);
  content: "";
}

.concept-three .spectrum-card img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  filter: saturate(0.62) contrast(1.16) brightness(0.74);
}

.concept-three .spectrum-card--standard img {
  object-position: 53% center;
}

.concept-three .spectrum-card--lynx img {
  object-position: 50% 36%;
}

.concept-three .spectrum-card--pit-viper img {
  object-position: 51% 43%;
}

.concept-three .spectrum-card__scan {
  position: absolute;
  z-index: 2;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 16, 19, 0.1), rgba(7, 16, 19, 0.9)),
    repeating-linear-gradient(180deg, transparent 0, transparent 5px, rgba(255, 255, 255, 0.022) 6px);
  pointer-events: none;
}

.concept-three .spectrum-card__meta,
.concept-three .spectrum-card__name {
  position: absolute;
  z-index: 3;
  right: 17px;
  left: 17px;
}

.concept-three .spectrum-card__meta {
  top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font: 800 0.61rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.concept-three .spectrum-card__index {
  color: var(--camera-accent);
}

.concept-three .spectrum-card__type {
  text-align: right;
}

.concept-three .spectrum-card__name {
  bottom: 19px;
  display: grid;
  gap: 5px;
}

.concept-three .spectrum-card__name strong {
  font-size: clamp(1.2rem, 2.2vw, 2rem);
  line-height: 1;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.concept-three .spectrum-card__name span {
  color: var(--camera-accent);
  font: 800 0.62rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.concept-three .signal-strip {
  display: grid;
  grid-template-columns: 1fr minmax(240px, 1.2fr) 1fr;
  align-items: center;
  gap: 30px;
  padding: 24px clamp(18px, 4vw, 58px);
  border-top: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
  background: var(--night-deep);
}

.concept-three .signal-strip p {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 0;
  font: 750 0.64rem/1.35 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.concept-three .signal-strip p span {
  color: var(--dim);
}

.concept-three .signal-strip__bar {
  display: grid;
  height: 6px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.concept-three .signal-strip__bar span:nth-child(1) { background: var(--cyan); }
.concept-three .signal-strip__bar span:nth-child(2) { background: var(--lynx); }
.concept-three .signal-strip__bar span:nth-child(3) { background: var(--heat); }

.concept-three .systems-section {
  padding: clamp(80px, 11vw, 150px) clamp(18px, 5vw, 76px);
  background: #dfe6e2;
  color: #071013;
}

.concept-three .systems-section__header {
  display: grid;
  width: min(1320px, 100%);
  grid-template-columns: 0.55fr 1.45fr;
  gap: 32px;
  margin: 0 auto 64px;
}

.concept-three .systems-section__header .field-code,
.concept-three .system__content .field-code {
  color: #556466;
}

.concept-three .systems-section h2 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2.7rem, 6.2vw, 7.5rem);
  line-height: 0.86;
  letter-spacing: -0.065em;
  text-transform: uppercase;
}

.concept-three .system-list {
  width: min(1320px, 100%);
  margin: 0 auto;
  border-top: 1px solid #8fa09f;
}

.concept-three .system {
  display: grid;
  min-height: 500px;
  grid-template-columns: 0.32fr 0.82fr 1.2fr;
  gap: clamp(22px, 4vw, 60px);
  padding: clamp(32px, 5vw, 64px) 0;
  border-bottom: 1px solid #8fa09f;
}

.concept-three .system__identity span {
  display: block;
  color: var(--camera-accent);
  font-size: clamp(3rem, 6vw, 6rem);
  font-weight: 850;
  line-height: 0.8;
  letter-spacing: -0.06em;
}

.concept-three .system__identity p {
  margin: 20px 0 0;
  font: 800 0.68rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.concept-three .system__visual {
  position: relative;
  min-height: 390px;
  overflow: hidden;
  background: #172326;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.concept-three .system__visual::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(3, 7, 8, 0.85));
  content: "";
}

.concept-three .system__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.08);
}

.concept-three .system--standard .system__visual img,
.concept-three #system-standard .system__visual img {
  object-position: 54% center;
}

.concept-three #system-lynx .system__visual img {
  object-position: 50% 34%;
}

.concept-three #system-pit-viper .system__visual img {
  object-position: center 45%;
}

.concept-three .system__visual p {
  position: absolute;
  z-index: 2;
  right: 17px;
  bottom: 15px;
  left: 17px;
  margin: 0;
  color: var(--camera-accent);
  font: 800 0.63rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.concept-three .system__content {
  align-self: center;
}

.concept-three .system__content h3 {
  margin: 13px 0 12px;
  font-size: clamp(2.2rem, 4.7vw, 5.4rem);
  line-height: 0.88;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.concept-three .system__tagline {
  margin: 0 0 13px;
  font-size: 1.18rem;
  font-weight: 720;
  line-height: 1.4;
}

.concept-three .system__summary {
  max-width: 650px;
  margin: 0;
  color: #506062;
  font-size: 1rem;
  line-height: 1.6;
}

.concept-three .system__content dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 27px 0;
  background: #91a09f;
}

.concept-three .system__content dl div {
  padding: 13px;
  background: #dfe6e2;
}

.concept-three .system__content dt {
  color: #647274;
  font: 800 0.62rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.concept-three .system__content dd {
  margin: 7px 0 0;
  font-size: 0.92rem;
  font-weight: 850;
}

.concept-three .system__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.concept-three .system__footer strong {
  font: 850 1rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.concept-three .system__footer a {
  padding-bottom: 4px;
  border-bottom: 2px solid var(--camera-accent);
  font: 850 0.68rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-transform: uppercase;
}

.concept-three .system__footer a span {
  color: var(--camera-accent);
}

.concept-three .method-section {
  padding: clamp(80px, 11vw, 150px) clamp(18px, 5vw, 76px);
  background:
    linear-gradient(rgba(88, 190, 210, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88, 190, 210, 0.06) 1px, transparent 1px),
    #071013;
  background-size: 48px 48px;
}

.concept-three .method-section__title,
.concept-three .method-grid,
.concept-three .method-section__footer {
  width: min(1320px, 100%);
  margin-inline: auto;
}

.concept-three .method-section__title {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 32px;
}

.concept-three .method-section h2 {
  margin: 0;
  font-size: clamp(2.7rem, 6.3vw, 7.5rem);
  line-height: 0.86;
  letter-spacing: -0.065em;
  text-transform: uppercase;
}

.concept-three .method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 65px;
  padding: 0;
  background: var(--grid-line);
  list-style: none;
}

.concept-three .method-grid li {
  min-height: 330px;
  padding: clamp(25px, 4vw, 46px);
  background: rgba(7, 16, 19, 0.94);
}

.concept-three .method-grid span {
  color: var(--acid);
  font: 800 0.65rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.concept-three .method-grid h3 {
  margin: 100px 0 14px;
  font-size: clamp(1.5rem, 2.5vw, 2.35rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.concept-three .method-grid p {
  margin: 0;
  color: var(--dim);
  font-size: 0.98rem;
  line-height: 1.6;
}

.concept-three .method-section__footer {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding-top: 25px;
  border-top: 1px solid var(--grid-line);
}

.concept-three .method-section__footer p {
  margin: 0;
  color: var(--dim);
  font: 800 0.64rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.concept-three .field-contact {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  align-items: end;
  gap: 40px;
  padding: clamp(80px, 11vw, 150px) clamp(18px, 5vw, 76px);
  background: var(--acid);
  color: #071013;
}

.concept-three .field-contact .field-code {
  color: #425516;
}

.concept-three .field-contact h2 {
  margin: 18px 0 0;
  font-size: clamp(2.8rem, 6.5vw, 7.8rem);
  line-height: 0.86;
  letter-spacing: -0.065em;
  text-transform: uppercase;
}

.concept-three .field-contact > a {
  justify-self: end;
  padding-bottom: 7px;
  border-bottom: 2px solid #071013;
  font: 850 0.78rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
}

.concept-three .field-footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  gap: 30px;
  padding: 32px clamp(18px, 4vw, 58px);
  background: var(--night-deep);
  color: var(--dim);
  font: 750 0.65rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.concept-three .field-footer img {
  width: 150px;
}

.concept-three .field-footer p {
  margin: 0;
  text-align: center;
}

.concept-three .field-footer a {
  justify-self: end;
  text-decoration: none;
}

@media (max-width: 1080px) {
  .concept-three .field-hero {
    grid-template-columns: 1fr;
  }

  .concept-three .spectrum-stage {
    min-height: 530px;
  }

  .concept-three .spectrum-card,
  .concept-three .spectrum-card img {
    min-height: 0;
    height: 450px;
  }

  .concept-three .system {
    grid-template-columns: 0.24fr 0.76fr 1fr;
  }
}

@media (max-width: 820px) {
  .concept-three .field-header {
    grid-template-columns: 1fr auto;
  }

  .concept-three .field-header__descriptor {
    display: none;
  }

  .concept-three .system {
    grid-template-columns: 0.25fr 0.75fr;
  }

  .concept-three .system__content {
    grid-column: 2;
  }

  .concept-three .systems-section__header,
  .concept-three .method-section__title,
  .concept-three .field-contact {
    grid-template-columns: 1fr;
  }

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

  .concept-three .method-grid li {
    min-height: 0;
  }

  .concept-three .method-grid h3 {
    margin-top: 60px;
  }

  .concept-three .field-contact > a {
    justify-self: start;
  }
}

@media (max-width: 680px) {
  .concept-three .field-header {
    position: relative;
    align-items: flex-start;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .concept-three .field-nav {
    width: 100%;
    justify-content: space-between;
  }

  .concept-three .field-hero {
    display: block;
  }

  .concept-three .spectrum-stage {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 54px;
  }

  .concept-three .spectrum-card,
  .concept-three .spectrum-card img {
    height: 350px;
  }

  .concept-three .spectrum-card:nth-child(1),
  .concept-three .spectrum-card:nth-child(3) {
    transform: none;
  }

  .concept-three .signal-strip {
    grid-template-columns: 1fr;
  }

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

  .concept-three .system__content {
    grid-column: auto;
  }

  .concept-three .system__identity {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
  }

  .concept-three .system__identity p {
    margin: 0;
    text-align: right;
  }

  .concept-three .system__visual {
    min-height: 350px;
  }

  .concept-three .system__content dl {
    grid-template-columns: 1fr;
  }

  .concept-three .method-section__footer,
  .concept-three .field-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .concept-three .method-section__footer {
    display: flex;
  }

  .concept-three .field-footer {
    display: flex;
  }

  .concept-three .field-footer p {
    text-align: left;
  }

  .concept-three .field-footer a {
    justify-self: start;
  }
}