.sy-main {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 28px 100px;
}

.sy-heading {
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin-bottom: 14px;
}

.sy-sub {
  color: var(--mk-text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 60ch;
}
.sy-sub a { color: var(--mk-accent-strong); text-decoration: underline; text-underline-offset: 3px; }

.sy-section-title {
  font-size: 1.25rem;
  color: var(--mk-text);
  margin: 44px 0 16px;
}

.sy-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.sy-stat-card {
  background: var(--mk-bg-card);
  border: 1px solid var(--mk-border);
  border-radius: var(--mk-radius-md);
  padding: 18px 16px;
}
.sy-stat-value {
  font-family: var(--mk-font-display);
  font-size: 1.7rem;
  font-variant-numeric: tabular-nums;
  color: var(--mk-text);
}
.sy-stat-of { font-size: 1rem; color: var(--mk-text-faint); }
.sy-stat-label {
  font-size: 0.82rem;
  color: var(--mk-text-muted);
  margin-top: 4px;
}

.sy-tech-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--mk-border);
  border-radius: var(--mk-radius-md);
  overflow: hidden;
}
.sy-tech-list li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px;
  background: var(--mk-bg-card);
}
.sy-tech-list li:nth-child(even) { background: var(--mk-bg-raised); }
.sy-tech-list strong {
  color: var(--mk-text);
  flex-shrink: 0;
  min-width: 110px;
}
.sy-tech-list span {
  color: var(--mk-text-muted);
  text-align: right;
  font-size: 0.92rem;
}

.sy-version-grid {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--mk-border);
  border-radius: var(--mk-radius-md);
  overflow: hidden;
}
.sy-version-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--mk-bg-card);
  font-size: 0.9rem;
}
.sy-version-row:nth-child(even) { background: var(--mk-bg-raised); }
.sy-version-label { color: var(--mk-text-muted); }
.sy-version-value { color: var(--mk-text); font-variant-numeric: tabular-nums; }

.sy-notice {
  background: var(--mk-bg-card);
  border: 1px solid var(--mk-border);
  border-left: 3px solid var(--mk-accent);
  border-radius: var(--mk-radius-md);
  padding: 16px 20px;
  color: var(--mk-text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-top: 44px;
}
.sy-notice strong { color: var(--mk-text); }
.sy-notice a { color: var(--mk-accent-strong); text-decoration: underline; text-underline-offset: 3px; }

.sy-error { color: var(--mk-text-faint); font-size: 0.9rem; grid-column: 1 / -1; }

.sy-skeleton {
  min-height: 66px;
  background: linear-gradient(90deg, var(--mk-bg-card) 25%, var(--mk-bg-raised) 50%, var(--mk-bg-card) 75%);
  background-size: 200% 100%;
  animation: sy-shimmer 1.4s ease-in-out infinite;
}
.sy-version-grid .sy-skeleton { min-height: 40px; }
@keyframes sy-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) {
  .sy-skeleton { animation: none; }
}

@media (max-width: 640px) {
  .sy-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .sy-tech-list li { flex-direction: column; gap: 4px; }
  .sy-tech-list span { text-align: left; }
}