.site-nav a.active {
  border-color: rgba(77, 235, 208, 0.54);
  background: linear-gradient(135deg, rgba(50, 210, 195, 0.22), rgba(20, 70, 94, 0.62));
  color: var(--text);
}

.iso-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(330px, 0.88fr);
  gap: 20px;
  align-items: stretch;
  min-width: 0;
}

.iso-copy,
.release-panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    radial-gradient(circle at 8% 8%, rgba(77, 235, 208, 0.15), transparent 18rem),
    linear-gradient(145deg, rgba(5, 11, 24, 0.96), rgba(8, 24, 41, 0.78));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.iso-copy {
  min-height: 560px;
  padding: clamp(28px, 5vw, 54px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.release-panel {
  padding: clamp(24px, 4vw, 38px);
}

.download-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 24px 0 18px;
}

.evaluation-callout {
  margin-top: 22px;
  padding: 18px;
  border: 1px solid rgba(42, 167, 164, 0.78);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(42, 167, 164, 0.32), rgba(8, 19, 36, 0.76));
  box-shadow: 0 0 28px rgba(42, 167, 164, 0.18);
}

.evaluation-callout strong,
.evaluation-callout span {
  display: block;
}

.evaluation-callout strong {
  margin-bottom: 6px;
  color: #2aa7a4;
  font-size: 1.05rem;
}

.evaluation-callout span {
  color: #dce9f5;
  line-height: 1.55;
}

.download-button {
  min-width: 220px;
}

.download-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.download-meta span,
.release-panel li,
.info-grid article {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(8, 19, 36, 0.58);
}

.download-meta span {
  padding: 13px;
  color: #dce9f5;
  font-weight: 900;
  text-align: center;
}

.release-panel ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.release-panel li {
  position: relative;
  padding: 14px 16px 14px 42px;
  color: #f4f8ff;
  font-weight: 900;
}

.release-panel li::before {
  position: absolute;
  left: 16px;
  color: var(--teal);
  content: "✓";
}

.iso-section {
  margin-top: 20px;
}

.iso-preview-section {
  display: grid;
  gap: 18px;
  margin-top: 20px;
  min-width: 0;
}

.iso-preview-copy {
  max-width: 780px;
}

.iso-preview-copy p {
  color: var(--muted);
  line-height: 1.6;
}

.iso-preview-frame {
  min-width: 0;
  margin: 0;
  padding: clamp(10px, 1.8vw, 18px);
  border: 1px solid rgba(77, 235, 208, 0.24);
  border-radius: 24px;
  background:
    radial-gradient(circle at 18% 12%, rgba(77, 235, 208, 0.12), transparent 22rem),
    linear-gradient(145deg, rgba(5, 11, 24, 0.92), rgba(8, 24, 41, 0.72));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.iso-preview-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(126, 203, 225, 0.18);
  border-radius: 16px;
  object-fit: contain;
  background: #f7faf8;
}

.iso-preview-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  cursor: zoom-in;
}

.iso-preview-trigger:focus-visible {
  outline: 3px solid rgba(77, 235, 208, 0.78);
  outline-offset: 5px;
  border-radius: 18px;
}

.iso-lightbox[hidden] {
  display: none;
}

.iso-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: grid;
  place-items: center;
  padding: clamp(10px, 2vw, 28px);
  background: rgba(2, 5, 12, 0.9);
  backdrop-filter: blur(16px);
}

.iso-lightbox-open {
  overflow: hidden;
}

.iso-lightbox-inner {
  position: relative;
  display: grid;
  width: min(96vw, 1800px);
  max-height: 94vh;
  min-width: 0;
  place-items: center;
}

.iso-lightbox-title {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.iso-lightbox-close {
  position: absolute;
  top: clamp(8px, 1.5vw, 16px);
  right: clamp(8px, 1.5vw, 16px);
  z-index: 1;
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  color: #ffffff;
  background: rgba(5, 11, 24, 0.88);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.38);
  cursor: pointer;
  font-weight: 900;
}

.iso-lightbox-close:hover,
.iso-lightbox-close:focus-visible {
  border-color: rgba(77, 235, 208, 0.72);
  background: rgba(13, 40, 55, 0.95);
  outline: none;
}

.iso-lightbox img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 94vh;
  border: 1px solid rgba(126, 203, 225, 0.26);
  border-radius: clamp(10px, 1.6vw, 18px);
  object-fit: contain;
  background: #f7faf8;
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.54);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.info-grid article {
  padding: 18px;
}

.info-grid strong,
.info-grid span,
.info-grid small {
  display: block;
}

.info-grid strong {
  margin-bottom: 8px;
  color: var(--text);
}

.info-grid span {
  color: var(--muted);
  line-height: 1.55;
}

.info-grid small {
  margin-top: 10px;
  color: #2aa7a4;
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.45;
}

code {
  color: #dffcf8;
  background: rgba(77, 235, 208, 0.08);
  border: 1px solid rgba(77, 235, 208, 0.22);
  border-radius: 8px;
  padding: 2px 7px;
}

@media (max-width: 980px) {
  .iso-hero,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .download-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .download-meta {
    grid-template-columns: 1fr;
  }
}