:root {
  color-scheme: dark;
  --bg: #0a0d12;
  --surface: #121720;
  --surface-strong: #181f2a;
  --line: #2a3340;
  --text: #f5f7fa;
  --muted: #aab3c0;
  --accent: #62e6a7;
  --accent-dark: #061a12;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 92% 4%, rgba(98, 230, 167, 0.12), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", Inter, system-ui, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header,
main,
footer {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  min-height: 82px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: clamp(220px, 25vw, 300px);
  height: auto;
}

.intro {
  max-width: 820px;
  padding: 92px 0 58px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

h1 {
  margin: 0;
  font-size: clamp(2.7rem, 7vw, 5.7rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.description {
  max-width: 680px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.15rem);
}

.gallery {
  display: grid;
  gap: 30px;
  padding-bottom: 82px;
}

.report-card {
  scroll-margin-top: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.24);
}

.card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 28px 30px;
}

.card-heading > div {
  display: flex;
  align-items: baseline;
  gap: 18px;
}

.index {
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 800;
}

h2 {
  margin: 0;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  letter-spacing: -0.035em;
}

.format {
  flex: none;
  padding: 6px 10px;
  border: 1px solid #384454;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.preview-link {
  position: relative;
  display: block;
  margin-inline: 12px;
  overflow: hidden;
  border: 1px solid #252d37;
  border-radius: 12px;
  background: #07090d;
}

.preview-link img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 220ms ease, opacity 220ms ease;
}

.zoom-hint {
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  background: rgba(7, 9, 13, 0.82);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.preview-link:hover img {
  opacity: 0.88;
  transform: scale(1.005);
}

.preview-link:hover .zoom-hint,
.preview-link:focus-visible .zoom-hint {
  opacity: 1;
  transform: translateY(0);
}

.preview-link:focus-visible,
.original-link:focus-visible,
.brand:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.original-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 12px;
  padding: 16px 18px;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-dark);
  font-weight: 850;
  text-decoration: none;
  transition: filter 160ms ease, transform 160ms ease;
}

.original-link:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

footer {
  padding: 28px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #737e8e;
  font-size: 0.82rem;
}

footer p {
  margin: 0;
}

@media (max-width: 640px) {
  .site-header,
  main,
  footer {
    width: min(100% - 24px, 1180px);
  }

  .site-header {
    min-height: 70px;
  }

  .intro {
    padding: 62px 4px 38px;
  }

  .description {
    margin-top: 22px;
  }

  .gallery {
    gap: 18px;
    padding-bottom: 54px;
  }

  .report-card {
    border-radius: 16px;
  }

  .card-heading {
    padding: 18px;
  }

  .format {
    display: none;
  }

  .preview-link,
  .original-link {
    margin-inline: 8px;
  }

  .zoom-hint {
    display: none;
  }

  .original-link {
    margin-bottom: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}