.sub-hero-strip {
  background: var(--surface);
  padding: 48px 24px;
  position: relative;
  overflow: hidden;
  border-bottom: 3px solid var(--accent);
}

.sub-hero-strip::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(135deg, rgba(51, 153, 255, 0.25), transparent);
  transform: skewX(-18deg);
}

.sub-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.sub-hero-inner h1 {
  font-size: clamp(26px, 4vw, 40px);
  text-transform: uppercase;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: 0.02em;
  max-width: 700px;
}

.sub-hero-inner p {
  color: var(--muted);
  margin-top: 12px;
  max-width: 600px;
  font-size: 16px;
}

.sub-layout-rail {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 72px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
}

.sub-rail {
  position: sticky;
  top: 80px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sub-rail-img {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  border: 2px solid var(--border);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.3);
  overflow: hidden;
  max-width: 100%;
}

.sub-rail-img img {
  max-width: 100%;
  max-height: 200px;
  width: 100%;
  object-fit: cover;
}

.sub-rail-nav {
  background: var(--surface);
  border: 2px solid var(--border);
  padding: 16px;
  clip-path: polygon(0 12px, 12px 0, 100% 0, 100% 100%, 0 100%);
}

.sub-rail-nav a {
  display: block;
  padding: 8px 0;
  font-size: 13px;
  color: var(--muted);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.sub-rail-nav a:last-child {
  border-bottom: none;
}

.sub-content h2 {
  font-size: 22px;
  text-transform: uppercase;
  color: var(--secondary);
  margin: 32px 0 14px;
  font-weight: 800;
}

.sub-content h2:first-child {
  margin-top: 0;
}

.sub-content p {
  color: var(--muted);
  margin-bottom: 16px;
  line-height: 1.75;
  font-size: 15px;
}

.sub-callout {
  background: rgba(255, 204, 0, 0.12);
  border-left: 4px solid var(--accent);
  padding: 20px 24px;
  margin: 24px 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.sub-callout p {
  margin-bottom: 0;
  color: var(--text);
}

.sub-mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
  overflow: hidden;
  max-width: 100%;
}

.sub-mosaic img {
  max-width: 100%;
  max-height: 160px;
  object-fit: cover;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  border: 1px solid var(--border);
}

@media (max-width: 768px) {
  .sub-layout-rail {
    grid-template-columns: 1fr;
    overflow: hidden;
    max-width: 100%;
  }

  .sub-rail {
    position: static;
    max-width: 100%;
    overflow: hidden;
  }

  .sub-rail-img img,
  .sub-mosaic img {
    max-width: 100%;
    max-height: 160px;
  }

  .sub-mosaic {
    grid-template-columns: 1fr;
  }
}