:root {
  --bg: #08111f;
  --bg-soft: #101d31;
  --panel: rgba(9, 20, 37, 0.72);
  --panel-strong: #0d1728;
  --line: rgba(255, 255, 255, 0.14);
  --text: #f4f7fb;
  --muted: #b7bfcb;
  --accent: #ff6b21;
  --accent-soft: #ff9f74;
  --highlight: #f0f0f0;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 112px;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Noto Sans KR", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(255, 107, 33, 0.18), transparent 28%),
    radial-gradient(circle at left center, rgba(255, 255, 255, 0.06), transparent 24%),
    linear-gradient(180deg, #050b14 0%, #091322 40%, #050912 100%);
}

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

button,
input,
textarea {
  font: inherit;
}

.site-shell {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-mark {
  position: relative;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  box-shadow: 0 0 28px rgba(255, 107, 33, 0.35);
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: var(--accent);
}

.brand-mark::before {
  width: 16px;
  height: 4px;
  top: 13px;
  left: 7px;
  border-radius: 999px;
  transform: rotate(-52deg);
}

.brand-mark::after {
  width: 12px;
  height: 4px;
  top: 13px;
  left: 11px;
  border-radius: 999px;
  transform: rotate(-52deg) translateY(6px);
}

.nav {
  display: flex;
  gap: 28px;
  align-items: center;
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}

.lang-button {
  min-width: 44px;
  border: 0;
  border-radius: 999px;
  padding: 8px 12px;
  background: transparent;
  color: var(--muted);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.lang-button:hover,
.lang-button:focus-visible {
  color: var(--text);
  transform: translateY(-1px);
}

.lang-button.is-active {
  background: linear-gradient(135deg, var(--accent), #ff8f4d);
  color: #111111;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

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

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

.hero {
  min-height: 100vh;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  padding: 0;
}

.hero-sticky {
  position: sticky;
  top: 0;
  min-height: 100vh;
}

.hero-copy,
.hero-panel,
.product-card,
.metrics-panel,
.quote-form,
.feature-list article {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 48px;
  border-radius: 36px;
}

.hero-media {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: #040912;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 11, 20, 0.22) 0%, rgba(5, 11, 20, 0.12) 24%, rgba(5, 11, 20, 0.55) 72%, rgba(5, 11, 20, 0.9) 100%),
    radial-gradient(circle at top right, rgba(255, 107, 33, 0.18), transparent 22%);
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent-soft);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-family: "Space Grotesk", sans-serif;
}

.hero h1,
.section-heading h2,
.quote-copy h2,
.footer h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  line-height: 0.94;
}

.hero h1 {
  font-size: clamp(2.56rem, 6.4vw, 5.6rem);
  opacity: 0.7;
}

.hero h1 span {
  display: block;
  color: var(--accent);
}

.hero-text,
.lead,
.product-card p,
.quote-copy p,
.footer p,
.stat-card p,
.grid-panel p,
.feature-list p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-text {
  max-width: 640px;
  margin: 28px 0 0;
  font-size: 1.02rem;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: flex-end;
}

.hero-overlay-inner {
  width: min(1280px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 72px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.button.primary {
  background: linear-gradient(135deg, var(--accent), #ff8f4d);
  color: #111111;
  font-weight: 700;
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.hero-panel {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 18px;
  padding: 18px;
  border-radius: 36px;
}

.hero-video {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.88;
  transform: scale(1.015);
  filter: saturate(0.94) contrast(1.02) brightness(0.78);
  transition: opacity 0.3s ease, transform 0.3s ease, filter 0.3s ease;
}

.hero.is-scrubbing .hero-video {
  opacity: 1;
  transform: scale(1);
  filter: saturate(1.05) contrast(1.04) brightness(0.95);
}

.stat-card,
.grid-panel > div {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(22, 28, 39, 0.92), rgba(8, 17, 31, 0.95));
}

.stat-card {
  padding: 24px;
}

.stat-label,
.grid-panel span,
.metrics-panel span,
.product-tag,
.feature-list span {
  display: inline-block;
  color: var(--accent-soft);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-family: "Space Grotesk", sans-serif;
}

.stat-card strong,
.grid-panel strong,
.metrics-panel strong,
.product-card h3,
.feature-list h3 {
  display: block;
  margin-top: 10px;
  font-size: 1.4rem;
  font-family: "Space Grotesk", sans-serif;
}

.grid-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.grid-panel > div {
  padding: 22px;
}

.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 0;
}

.marquee-track {
  display: flex;
  gap: 56px;
  width: max-content;
  padding: 18px 0;
  color: rgba(255, 255, 255, 0.6);
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.24em;
  animation: marquee 22s linear infinite;
}

.section {
  padding: 110px 0 0;
}

#home,
#about,
#products,
#quote,
#contact {
  scroll-margin-top: 112px;
}

.section-heading {
  display: grid;
  gap: 14px;
  margin-bottom: 36px;
}

.section-heading h2,
.quote-copy h2,
.footer h2 {
  font-size: clamp(2.2rem, 5vw, 4.6rem);
}

.intro-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 28px;
  align-items: start;
}

.lead {
  margin: 0;
  font-size: 1.2rem;
}

.feature-list {
  display: grid;
  gap: 18px;
}

.feature-list article {
  padding: 24px;
  border-radius: 24px;
}

.feature-list h3,
.product-card h3 {
  margin-bottom: 12px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  min-height: 260px;
  padding: 28px;
  border-radius: 28px;
}

.product-card.accent {
  background:
    radial-gradient(circle at top right, rgba(255, 107, 33, 0.26), transparent 34%),
    linear-gradient(180deg, rgba(15, 31, 49, 0.96), rgba(8, 17, 31, 0.96));
}

.metrics-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding: 20px;
  border-radius: 32px;
}

.metrics-panel > div {
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
}

.quote {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 28px;
  align-items: start;
}

.quote-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border-radius: 32px;
}

.quote-form label {
  display: grid;
  gap: 10px;
  color: var(--text);
  font-size: 0.95rem;
}

.quote-form input,
.quote-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.quote-form input::placeholder,
.quote-form textarea::placeholder {
  color: #7f93ae;
}

.footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  padding: 110px 0 40px;
  align-items: end;
}

.footer-info {
  text-align: right;
}

.copyright {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (max-width: 960px) {
  .intro-layout,
  .quote,
  .footer,
  .metrics-panel {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .footer-info {
    text-align: left;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100% - 20px, 1280px);
  }

  .topbar {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 14px;
  }

  .language-switcher {
    order: 2;
  }

  .menu-toggle {
    display: inline-flex;
    order: 1;
  }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: rgba(5, 11, 20, 0.95);
    order: 3;
  }

  .nav.open {
    display: flex;
  }

  .hero {
    min-height: 100vh;
  }

  .hero-sticky {
    min-height: 100vh;
  }

  .hero-overlay-inner {
    width: min(100% - 24px, 1280px);
    padding-bottom: 44px;
  }

  .grid-panel {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    line-height: 1;
  }

  .section {
    padding-top: 84px;
  }
}