:root {
  --bg: #0a0d1b;
  --bg-deep: #070910;
  --surface: rgba(15, 20, 38, 0.78);
  --surface-strong: rgba(20, 28, 56, 0.88);
  --line: rgba(255, 213, 75, 0.2);
  --gold: #ffd44b;
  --gold-strong: #ffb300;
  --sky: #66d5ff;
  --pink: #ff5fd2;
  --text: #f5f7ff;
  --muted: #9fa8c7;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --container: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 179, 0, 0.16), transparent 30%),
    radial-gradient(circle at 80% 0%, rgba(102, 213, 255, 0.18), transparent 28%),
    linear-gradient(180deg, #0f1230 0%, var(--bg) 42%, var(--bg-deep) 100%);
  font-family: "Noto Sans KR", sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.page-glow {
  position: fixed;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.5;
  pointer-events: none;
  z-index: -2;
}

.page-glow-left {
  top: 12rem;
  left: -8rem;
  background: rgba(255, 95, 210, 0.22);
}

.page-glow-right {
  top: 38rem;
  right: -8rem;
  background: rgba(102, 213, 255, 0.2);
}

.grid-noise {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(255, 255, 255, 0.7), transparent 90%);
  pointer-events: none;
  z-index: -1;
}

.site-header,
.hero,
.content-section,
.site-footer,
.ticker-section {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  backdrop-filter: blur(14px);
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 212, 75, 0.3), transparent);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.08),
    0 14px 30px rgba(255, 179, 0, 0.2);
}

.brand-icon {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-copy strong,
.site-nav a,
.eyebrow,
.button,
.feature-index,
.card-kicker {
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-copy strong {
  font-family: "Orbitron", sans-serif;
  font-size: 0.96rem;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.76rem;
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.84rem;
  transition: color 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--gold);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 3rem;
  align-items: center;
  padding: 4.5rem 0 3rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 700;
}

.hero h1,
.section-heading h2,
.system-panel h3,
.stack-card h3,
.feature-card h3 {
  margin: 0;
  font-family: "Black Han Sans", "Noto Sans KR", sans-serif;
  font-weight: 400;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.hero h1 span {
  display: block;
  margin-top: 0.45rem;
  color: transparent;
  background: linear-gradient(90deg, var(--gold) 0%, #fff0b8 35%, var(--sky) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-text,
.section-heading p,
.feature-card p,
.stack-card p,
.system-list li,
.gallery-stage figcaption {
  color: var(--muted);
}

.hero-text {
  max-width: 38rem;
  margin: 1.4rem 0 0;
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.4rem;
  padding: 0 1.35rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-strong) 100%);
  color: #241300;
  box-shadow: 0 20px 44px rgba(255, 179, 0, 0.28);
}

.button-secondary {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
  padding: 0;
  margin: 2rem 0 0;
  list-style: none;
}

.hero-stats li,
.feature-card,
.system-panel,
.stack-card,
.gallery-stage,
.thumb,
.floating-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-stats li {
  padding: 1rem;
  border-radius: var(--radius-md);
}

.hero-stats strong {
  display: block;
  font-family: "Orbitron", sans-serif;
  font-size: 1.4rem;
  color: var(--gold);
}

.hero-stats span {
  color: var(--muted);
  font-size: 0.86rem;
}

.hero-visual {
  position: relative;
  min-height: 42rem;
  display: grid;
  place-items: center;
}

.phone-frame {
  position: relative;
  width: min(100%, 24rem);
  padding: 0.8rem;
  border-radius: 2.5rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04));
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.08),
    0 25px 90px rgba(0, 0, 0, 0.5);
}

.phone-frame::before {
  content: "";
  position: absolute;
  inset: -1.2rem;
  border-radius: 3.2rem;
  border: 1px solid rgba(255, 212, 75, 0.16);
  pointer-events: none;
}

.phone-frame img {
  width: 100%;
  border-radius: 2rem;
}

.floating-card {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius-lg);
}

.card-mission {
  top: 5rem;
  left: -0.5rem;
  animation: floatY 4.8s ease-in-out infinite;
}

.card-score {
  right: -0.2rem;
  bottom: 4.5rem;
  animation: floatY 5.2s ease-in-out infinite reverse;
}

.card-kicker {
  color: var(--sky);
  font-size: 0.7rem;
  font-weight: 700;
}

.floating-card strong {
  font-family: "Orbitron", sans-serif;
  font-size: 1rem;
}

.floating-card span:last-child {
  color: var(--muted);
  font-size: 0.85rem;
}

.ticker-section {
  overflow: hidden;
  padding-bottom: 1.2rem;
}

.ticker-track {
  display: flex;
  gap: 1.5rem;
  width: max-content;
  padding: 0.9rem 1.1rem;
  border: 1px solid rgba(255, 212, 75, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  white-space: nowrap;
  animation: tickerMove 22s linear infinite;
}

.ticker-track span {
  font-family: "Orbitron", sans-serif;
  color: #ffe7a6;
  font-size: 0.92rem;
}

.content-section {
  padding: 5rem 0 1rem;
}

.section-heading {
  max-width: 44rem;
}

.section-heading h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.08;
  margin-top: 0.35rem;
}

.section-heading p {
  margin-top: 1rem;
}

.feature-grid,
.stack-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card,
.stack-card,
.system-panel {
  padding: 1.5rem;
  border-radius: var(--radius-xl);
}

.feature-index {
  display: inline-flex;
  margin-bottom: 0.9rem;
  color: var(--gold);
  font-size: 0.8rem;
  font-weight: 700;
}

.feature-card h3,
.system-panel h3,
.stack-card h3 {
  font-size: 1.15rem;
}

.systems-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
  margin-top: 2rem;
}

.system-list {
  padding-left: 1.2rem;
  margin: 1rem 0 0;
}

.system-list li + li {
  margin-top: 0.55rem;
}

.payout-table {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
}

.payout-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.payout-row strong {
  color: var(--gold);
  font-family: "Orbitron", sans-serif;
  font-size: 0.95rem;
}

.gallery-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 16rem;
  gap: 1rem;
  margin-top: 2rem;
}

.gallery-stage {
  padding: 1rem;
  border-radius: calc(var(--radius-xl) + 4px);
}

.gallery-stage img {
  width: 100%;
  max-height: 46rem;
  object-fit: contain;
  border-radius: 1.5rem;
  background: linear-gradient(180deg, rgba(102, 213, 255, 0.08), rgba(255, 95, 210, 0.08));
}

.gallery-stage figcaption {
  margin-top: 1rem;
}

.gallery-thumbs {
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.thumb {
  display: grid;
  grid-template-columns: 4.2rem 1fr;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  padding: 0.75rem;
  border-radius: 20px;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease;
}

.thumb img {
  width: 4.2rem;
  aspect-ratio: 3 / 5;
  object-fit: cover;
  border-radius: 14px;
}

.thumb span {
  font-weight: 700;
}

.thumb:hover,
.thumb:focus-visible,
.thumb.active {
  transform: translateX(-4px);
  border-color: rgba(255, 212, 75, 0.4);
  background: linear-gradient(180deg, rgba(255, 212, 75, 0.12), rgba(255, 255, 255, 0.05));
}

.stack-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 4rem 0 2rem;
  color: var(--muted);
}

.site-footer a {
  color: #d9e7ff;
}

@keyframes tickerMove {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

@keyframes floatY {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-12px);
  }
}

@media (max-width: 1100px) {
  .hero,
  .gallery-shell,
  .systems-layout,
  .feature-grid,
  .stack-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3rem;
  }

  .hero-visual {
    min-height: auto;
    padding: 2rem 0 1rem;
  }

  .floating-card {
    position: static;
    margin-bottom: 1rem;
    width: min(100%, 22rem);
  }

  .phone-frame::before {
    inset: -0.7rem;
  }

  .gallery-thumbs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .thumb {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .thumb:hover,
  .thumb:focus-visible,
  .thumb.active {
    transform: translateY(-4px);
  }
}

@media (max-width: 760px) {
  .site-header {
    flex-direction: column;
    gap: 0.9rem;
    align-items: flex-start;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 0.85rem 1rem;
  }

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

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

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .site-header,
  .hero,
  .content-section,
  .site-footer,
  .ticker-section {
    width: min(calc(100% - 1.25rem), var(--container));
  }

  .hero {
    gap: 2rem;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .gallery-thumbs {
    grid-template-columns: 1fr;
  }

  .ticker-track {
    animation-duration: 18s;
  }

  .button {
    width: 100%;
  }
}