:root {
  --bg-1: #5f2d8f;
  --bg-2: #9f58c7;
  --bg-3: #cd7abf;
  --ink: #130925;
  --panel: rgba(14, 8, 29, 0.34);
  --line: rgba(255, 255, 255, 0.24);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: "Arial Black", "Arial Rounded MT Bold", Arial, sans-serif;
  color: #fff;
  background:
    radial-gradient(circle at 48% 45%, rgba(255, 174, 207, 0.35) 0%, rgba(255, 174, 207, 0) 35%),
    radial-gradient(circle at 35% 28%, rgba(255, 255, 255, 0.16) 0%, rgba(255, 255, 255, 0) 28%),
    radial-gradient(circle at 80% 26%, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0) 25%),
    radial-gradient(circle at 50% 55%, var(--bg-3) 0%, var(--bg-2) 44%, var(--bg-1) 88%);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1.7rem;
  background: linear-gradient(180deg, rgba(16, 9, 33, 0.84) 0%, rgba(16, 9, 33, 0.45) 100%);
  backdrop-filter: blur(4px);
  border-bottom: 1px solid var(--line);
}

.brand img {
  width: clamp(170px, 22vw, 270px);
  height: auto;
  display: block;
}

.home-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #fff;
  background: #11141f;
  border: 1px solid rgba(255, 255, 255, 0.27);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
}

.downloads-page {
  width: 100%;
  padding: 1.1rem 1.7rem 2rem;
}

.top-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.intro h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  text-shadow: 0 4px 10px rgba(13, 5, 29, 0.33);
}

.intro p {
  margin: 0.35rem 0 1rem;
  font-family: Arial, sans-serif;
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  color: rgba(255, 255, 255, 0.9);
}

.pdf-block {
  display: block;
}

.pdf-card,
.sheet-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.7rem;
  box-shadow: 0 10px 16px rgba(13, 6, 27, 0.2);
}

.pdf-card h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
}

.pdf-main {
  display: grid;
  grid-template-columns: minmax(110px, 160px) 1fr;
  align-items: center;
  gap: 0.65rem;
  max-width: 560px;
  margin-left: auto;
}

.pdf-main img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.pdf-copy p {
  margin: 0 0 0.7rem;
  font-family: Arial, sans-serif;
  color: rgba(255, 255, 255, 0.88);
}

.pdf-card a,
.sheet-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #fff;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  background: linear-gradient(180deg, #151a2b 0%, #0c0f19 100%);
  padding: 0.48rem 0.8rem;
  font-size: 0.84rem;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.8rem;
}

.sheet-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.sheet-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.17);
  background: rgba(255, 255, 255, 0.18);
}

@media (max-width: 980px) {
  .top-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pdf-main {
    grid-template-columns: minmax(125px, 180px) 1fr;
    max-width: none;
    margin-left: 0;
  }
}

@media (max-width: 640px) {
  .topbar {
    padding: 0.65rem 1rem;
  }

  .brand img {
    width: clamp(135px, 44vw, 200px);
  }

  .home-btn {
    padding: 0.45rem 0.75rem;
    font-size: 0.82rem;
  }

  .downloads-page {
    padding: 0.85rem 1rem 1.5rem;
  }

  .pdf-main {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
  }
}