*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background-color: #fafaf8;
  color: #2c2c2c;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---- Header ---- */

.site-header {
  text-align: center;
  padding: 4rem 1.5rem 2.5rem;
}

.site-name {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #1a1a1a;
}

.site-handle {
  margin-top: 0.4rem;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: #aaa;
}

.site-intro {
  margin-top: 1.2rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: #666;
  letter-spacing: 0.06em;
}

/* ---- Main ---- */

.site-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 1.5rem 4rem;
  width: 100%;
}

/* ---- Featured Artwork ---- */

.featured-artwork {
  width: 100%;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* 作品表示枠 */
.artwork-frame {
  width: 100%;
  display: block;
  border-radius: 4px;
}

.artwork-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

/* ---- Artwork Caption ---- */

.artwork-caption {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 0 0.25rem;
}

.artwork-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #1a1a1a;
}

.artwork-text {
  font-size: 0.95rem;
  line-height: 2;
  color: #555;
  letter-spacing: 0.04em;
}

/* ---- Footer ---- */

.site-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.75rem;
  color: #ccc;
}

.footer-links {
  margin-bottom: 0.75rem;
}

.footer-link {
  font-size: 0.75rem;
  color: #aaa;
  text-decoration: none;
  letter-spacing: 0.1em;
}

.footer-link:hover {
  color: #666;
}

/* ---- Responsive ---- */

@media (max-width: 639px) {
  .site-header {
    padding: 2.75rem 1.25rem 1.75rem;
  }

  .site-intro {
    margin-top: 0.9rem;
  }

  .site-main {
    padding: 0.5rem 1.25rem 2.5rem;
  }

  .featured-artwork {
    max-width: 320px;
    gap: 1.5rem;
  }

  .artwork-caption {
    gap: 0.75rem;
  }

  .artwork-text {
    line-height: 1.8;
  }

  .site-footer {
    padding: 1.5rem 1.25rem;
  }
}

@media (min-width: 640px) {
  .site-header {
    padding: 5rem 2rem 3rem;
  }

  .site-intro {
    font-size: 1rem;
  }

  .featured-artwork {
    max-width: 480px;
  }

  .artwork-title {
    font-size: 1.25rem;
  }

  .artwork-text {
    font-size: 1rem;
  }
}