/* ── Layout ── */
#box_skill {
  margin-top: 100px;
  margin-bottom: 80px;
}

/* ── Hero ── */
#box_hero {
  text-align: center;
  margin-bottom: 48px;
}
#box_hero h2 {
  margin-bottom: 8px;
}
#skillVersion {
  font-size: 14px;
  color: var(--color-greyMedium);
  margin-bottom: 16px;
}
.hero-desc {
  font-size: 16px;
  color: var(--color-greyMedium);
  max-width: 600px;
  margin: 0 auto 32px;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-copy-install {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--color-greyLight);
  border: 1px solid var(--color-greyLight);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--motion-fast);
}
.btn-copy-install code {
  font-size: 13px;
  color: var(--color-greyDark);
}
.btn-copy-install img {
  width: 16px;
  height: 16px;
  opacity: 0.5;
}
.btn-copy-install:hover {
  border-color: var(--color-greyMedium);
}
.btn-copy-install.copied {
  border-color: var(--color-primary);
  background: var(--color-primaryLight);
}
.btn-github {
  display: inline-block;
  padding: 10px 24px;
  background: var(--color-black);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--motion-fast);
}
.btn-github:hover {
  background: var(--color-black);
  color: var(--color-white);
}

/* ── Features ── */
#box_features {
  margin-bottom: 48px;
}
#box_features h4 {
  margin-bottom: 24px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 20px;
}
.feature-card h6 {
  margin-bottom: 8px;
  font-size: 14px;
}
.feature-card p {
  font-size: 12px;
  color: var(--color-greyMedium);
  line-height: 1.6;
  margin: 0;
}

/* ── Changelog ── */
#box_changelog h4 {
  margin-bottom: 24px;
}
.changelog-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-greyLight);
}
.changelog-item:last-child {
  border-bottom: none;
}
.changelog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}
.changelog-header h6 {
  font-size: 14px;
}
.changelog-date {
  font-size: 12px;
  color: var(--color-greyMedium);
  flex-shrink: 0;
  margin-left: 16px;
}
.changelog-item p {
  font-size: 13px;
  color: var(--color-greyMedium);
  margin: 0;
  line-height: 1.5;
}

/* ── Loading ── */
.loading-box {
  background: var(--color-greyLight);
  border-radius: var(--radius-micro);
  overflow: hidden;
  position: relative;
}
.loading-shine {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
  animation: shine 1.5s infinite;
}
@keyframes shine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ── RWD ── */
@media (max-width: 1300px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  #box_skill {
    margin-top: 80px;
  }
  .hero-desc {
    font-size: 14px;
  }
  .btn-copy-install code {
    font-size: 11px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
}