.rss-hub-page {
  --rss-bg: #ffffff;
  --rss-surface: #ffffff;
  --rss-text: #000000;
  --rss-muted: #5a5a5a;
  --rss-border: #dfdfdf;
  --rss-accent: #dd3333;
  --rss-accent-strong: #dd3333;
  --rss-accent-soft: rgba(255, 227, 40, 0.22);
  --rss-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
  --rss-radius: 20px;
  --rss-blue: #163860;
  --rss-yellow: #ffe328;
  --rss-gray-light: #f3f3f3;

  background: var(--rss-bg);
  padding: clamp(1.75rem, 5vw, 3.5rem) 0 clamp(2.75rem, 7vw, 4.5rem);
}

.rss-hub-shell {
  max-width: 1180px;
}

.rss-hub-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: clamp(1.25rem, 4vw, 2.125rem);
  padding: clamp(1.625rem, 5vw, 2.75rem);
  border-radius: calc(var(--rss-radius) + 0.25rem);
  border: 1px solid var(--rss-border);
  border-left: 6px solid var(--rss-yellow);
  background: linear-gradient(155deg, #ffffff 0%, #fbfbfb 62%, #f7f7f7 100%);
  color: var(--rss-text);
  box-shadow: var(--rss-shadow);
}

.rss-hub-hero::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 18px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 227, 40, 0.95) 0%, rgba(255, 227, 40, 0.2) 62%, transparent 70%);
}

.rss-hub-kicker {
  margin: 0 0 0.5rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rss-accent-strong);
}

.rss-hub-hero h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  line-height: 1.08;
}

.rss-hub-lead {
  max-width: 66ch;
  margin: 0.75rem 0 0;
  font-size: clamp(0.98rem, 1.9vw, 1.12rem);
  line-height: 1.65;
  color: var(--rss-muted);
}

.rss-hub-content {
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}

.rss-hub-card {
  padding: clamp(1.125rem, 3.6vw, 1.875rem);
  border: 1px solid var(--rss-border);
  border-radius: var(--rss-radius);
  background: var(--rss-surface);
  box-shadow: 0 8px 26px rgba(26, 35, 48, 0.05);
}

.rss-hub-card h2 {
  margin: 0 0 0.625rem;
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  color: var(--rss-text);
}

.rss-hub-card p {
  margin: 0 0 0.75rem;
  line-height: 1.7;
  color: var(--rss-muted);
}

.rss-hub-card p:last-child {
  margin-bottom: 0;
}

.rss-hub-main-feeds {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.rss-hub-feed-pill {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.5625rem 1rem;
  border: 1px solid var(--rss-border);
  border-radius: var(--ent-radius-full, 999rem);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--rss-text);
  background: linear-gradient(135deg, #ffffff, var(--rss-gray-light));
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.rss-hub-feed-pill:hover,
.rss-hub-feed-pill:focus-visible {
  border-color: var(--rss-accent);
  box-shadow: 0 6px 14px rgba(221, 51, 51, 0.18);
  transform: translateY(-1px);
}

.rss-hub-section-head {
  margin-bottom: 0.875rem;
}

.rss-hub-grid {
  display: grid;
  gap: 0.875rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.rss-hub-category-card {
  --delay: calc(var(--stagger) * 45ms);
  padding: 1rem;
  border: 1px solid var(--rss-border);
  border-radius: 1rem;
  background:
    linear-gradient(160deg, rgba(255, 227, 40, 0.18), rgba(255, 255, 255, 0.94) 34%),
    #fff;
  animation: rss-hub-rise 0.5s ease both;
  animation-delay: var(--delay);
}

.rss-hub-category-title {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  line-height: 1.25;
  color: var(--rss-text);
}

.rss-hub-subcategory-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.rss-hub-subcategory-link {
  display: inline-flex;
  align-items: center;
  min-height: 35px;
  padding: 0.4375rem 0.6875rem;
  border: 1px solid var(--rss-border);
  border-radius: 0.625rem;
  background: #fff;
  color: var(--rss-text);
  font-size: 0.88rem;
  line-height: 1.3;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.rss-hub-subcategory-link:hover,
.rss-hub-subcategory-link:focus-visible {
  border-color: var(--rss-accent);
  background-color: var(--rss-accent-soft);
  color: var(--rss-accent-strong);
}

.rss-hub-top-feed-link {
  display: inline-flex;
  margin-top: 0.75rem;
  font-size: 0.83rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--rss-blue);
}

.rss-hub-top-feed-link:hover,
.rss-hub-top-feed-link:focus-visible {
  color: var(--rss-accent);
  text-decoration: underline;
}

.rss-hub-example code {
  display: inline-block;
  max-width: 100%;
  margin: 0 0 0.375rem;
  padding: 0.375rem 0.5625rem;
  border-radius: 0.5rem;
  background: var(--rss-gray-light);
  color: var(--rss-text);
  font-size: 0.84rem;
  white-space: normal;
  word-break: break-all;
}

@keyframes rss-hub-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1024px) {
  .rss-hub-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .rss-hub-page {
    padding-top: 1.125rem;
    padding-bottom: 2.125rem;
  }

  .rss-hub-hero::after {
    width: 54px;
    height: 54px;
    right: 14px;
    top: 14px;
  }

  .rss-hub-card {
    padding: 1rem;
    border-radius: 0.875rem;
  }
}