:root {
  color-scheme: dark;
  --background: #030405;
  --surface: #11140e;
  --surface-raised: #171a12;
  --border: #252b20;
  --primary: #a3e635;
  --primary-deep: #65a30d;
  --text: #f8fff3;
  --text-secondary: #a7b29b;
  --text-muted: #737f69;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 75% 10%, rgb(163 230 53 / 12%), transparent 28rem),
    var(--background);
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", Inter, system-ui, sans-serif;
  line-height: 1.6;
}

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

.site-header,
main,
footer {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
}

.brand strong,
.footer-brand strong {
  color: var(--primary);
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--text-secondary);
  font-size: 14px;
}

nav a {
  transition: color 160ms ease;
}

nav a:hover,
nav a:focus-visible,
nav a[aria-current="page"] {
  color: var(--primary);
}

.hero {
  min-height: 680px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: center;
  gap: 80px;
  padding: 96px 0;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.hero h1,
.legal-card h1 {
  margin: 0;
  font-size: clamp(44px, 6vw, 76px);
  line-height: 1.12;
  letter-spacing: -0.055em;
}

.hero h1 span {
  color: var(--primary);
}

.hero-description {
  margin: 30px 0 0;
  color: var(--text-secondary);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  transition: transform 160ms ease, background-color 160ms ease;
}

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

.button-primary {
  border-color: var(--primary);
  color: #11140e;
  background: var(--primary);
}

.button-secondary {
  background: var(--surface);
}

.hero-card {
  position: relative;
  overflow: hidden;
  min-height: 430px;
  padding: 44px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: linear-gradient(145deg, var(--surface-raised), #090b07);
  box-shadow: 0 32px 80px rgb(0 0 0 / 40%);
}

.hero-card::after {
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgb(163 230 53 / 12%);
  content: "";
  filter: blur(2px);
}

.logo-frame {
  width: 90px;
  height: 90px;
  display: grid;
  place-items: center;
  margin-bottom: 62px;
  border-radius: 24px;
  overflow: hidden;
  background: white;
}

.logo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-card > p {
  margin: 0 0 10px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.hero-card > strong {
  font-size: 26px;
  line-height: 1.35;
  letter-spacing: -0.04em;
}

.status-row {
  display: flex;
  gap: 18px;
  margin-top: 42px;
  color: var(--text-secondary);
  font-size: 12px;
}

.status-row span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.status-row i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px var(--primary);
}

.features {
  padding: 110px 0 130px;
  border-top: 1px solid var(--border);
}

.section-heading h2 {
  max-width: 600px;
  margin: 0;
  font-size: clamp(32px, 5vw, 50px);
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 56px;
}

.feature-grid article {
  min-height: 250px;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
}

.feature-number {
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.feature-grid h3 {
  margin: 56px 0 12px;
  font-size: 21px;
  letter-spacing: -0.035em;
}

.feature-grid p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.legal-main {
  min-height: calc(100vh - 210px);
  padding: 82px 0 110px;
}

.legal-card {
  max-width: 880px;
  margin-inline: auto;
  padding: clamp(32px, 6vw, 72px);
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
}

.legal-card h1 {
  font-size: clamp(36px, 6vw, 58px);
}

.legal-content {
  min-height: 320px;
  margin-top: 54px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 17px;
}

.legal-content h2 {
  margin: 48px 0 16px;
  color: var(--text);
  font-size: 23px;
  line-height: 1.4;
  letter-spacing: -0.035em;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  margin: 0 0 18px;
}

.legal-content ol,
.legal-content ul {
  margin: 14px 0 22px;
  padding-left: 1.6em;
}

.legal-content ul {
  list-style: disc;
}

.legal-content li {
  padding-left: 0.25em;
}

.legal-content li + li {
  margin-top: 8px;
}

.legal-content li > ol,
.legal-content li > ul {
  margin: 8px 0 4px;
}

footer {
  min-height: 126px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
}

footer p {
  margin: 3px 0;
}

.footer-brand {
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 22px;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--primary);
}

@media (max-width: 820px) {
  .site-header {
    padding: 18px 0;
    align-items: flex-start;
  }

  nav {
    max-width: 260px;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px 16px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 52px;
    padding: 76px 0;
  }

  .hero-card {
    min-height: 380px;
  }

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

@media (max-width: 560px) {
  .site-header,
  main,
  footer {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    display: block;
  }

  nav {
    max-width: none;
    justify-content: flex-start;
    margin-top: 16px;
    font-size: 12px;
  }

  .hero {
    min-height: 0;
    padding: 64px 0;
  }

  .hero-description {
    font-size: 16px;
  }

  .hero-description br {
    display: none;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-card {
    min-height: 350px;
    padding: 30px;
  }

  .logo-frame {
    margin-bottom: 42px;
  }

  .features {
    padding: 80px 0;
  }

  .legal-main {
    padding: 48px 0 72px;
  }

  .legal-content {
    min-height: 240px;
    font-size: 15px;
  }

  .legal-content h2 {
    margin-top: 38px;
    font-size: 20px;
  }

  footer {
    padding: 28px 0;
    display: block;
  }

  .footer-links {
    justify-content: flex-start;
    margin-top: 20px;
    gap: 10px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}