.tut-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  padding: var(--space-4xl) 0 var(--space-3xl);
  position: relative;
  overflow: hidden;
}
.tut-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(0,201,167,.15) 0%, transparent 70%);
}
.tut-hero .container { position: relative; z-index: 1; }
.tut-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,201,167,.15);
  border: 1px solid rgba(0,201,167,.3);
  color: var(--color-accent);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}
/* FIX 7: H1 is now the keyword headline */
.tut-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: var(--space-sm);
}
.tut-hero-title span { color: var(--color-accent); }
.tut-hero-tagline {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}
.tut-hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,.7);
  max-width: 600px;
  margin-bottom: var(--space-2xl);
}
.tut-search-form {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  max-width: 700px;
}
.tut-search-input {
  flex: 1;
  min-width: 200px;
  padding: .75rem 1.25rem;
  border: 2px solid rgba(255,255,255,.2);
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.1);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: .95rem;
  backdrop-filter: blur(6px);
  transition: border-color var(--transition);
}
.tut-search-input::placeholder { color: rgba(255,255,255,.5); }
.tut-search-input:focus { outline: none; border-color: var(--color-accent); background: rgba(255,255,255,.15); }
.tut-search-btn {
  padding: .75rem 1.5rem;
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .9rem;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.tut-search-btn:hover { background: var(--color-accent-dark); transform: translateY(-1px); }
.tut-stats { display: flex; gap: var(--space-xl); flex-wrap: wrap; margin-top: var(--space-xl); }
.tut-stat { text-align: left; }
.tut-stat-num { font-family: var(--font-display); font-size: 1.75rem; font-weight: 800; color: var(--color-accent); line-height: 1; }
.tut-stat-label { font-size: .75rem; color: rgba(255,255,255,.6); text-transform: uppercase; letter-spacing: .08em; }

/* ── Layout ─────────────────────────────────────────────────── */
.tut-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  padding: var(--space-3xl) 0;
}
@media (min-width: 1024px) { .tut-layout { grid-template-columns: 260px 1fr; } }
.tut-sidebar { display: flex; flex-direction: column; gap: var(--space-lg); }
.sidebar-card { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-lg); }

/* FIX 8: Sidebar titles demoted to h3 styling */
.sidebar-title { font-family: var(--font-display); font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: var(--space-md); padding-bottom: var(--space-sm); border-bottom: 2px solid var(--color-accent-light); }
.cat-list { display: flex; flex-direction: column; gap: 6px; }
.cat-item { display: flex; align-items: center; justify-content: space-between; padding: 8px 12px; border-radius: var(--radius-md); font-size: .875rem; font-weight: 500; color: var(--color-text-light); transition: all var(--transition); text-decoration: none; }
.cat-item:hover, .cat-item.active { background: var(--color-accent-light); color: var(--color-accent-dark); }
.cat-item.active { font-weight: 700; }
.cat-count { background: var(--color-border); color: var(--color-muted); padding: 2px 7px; border-radius: var(--radius-full); font-size: .7rem; font-weight: 700; }
.cat-item.active .cat-count { background: var(--color-accent); color: var(--color-primary); }

/* FIX 16: Popular topic tags use CSS hover instead of inline JS */
.topic-tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 700;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-light);
  transition: all var(--transition);
  text-decoration: none;
}
.topic-tag:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb-nav {
  padding: var(--space-md) 0 0;
  font-size: .8rem;
  color: var(--color-muted);
}
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumb-list li { display: flex; align-items: center; gap: 6px; }
.breadcrumb-list a { color: var(--color-muted); text-decoration: none; transition: color var(--transition); }
.breadcrumb-list a:hover { color: var(--color-accent); }
.breadcrumb-list .sep { color: var(--color-border); font-size: .7rem; }
.breadcrumb-list [aria-current="page"] { color: var(--color-text-light); font-weight: 600; }

/* ── Toolbar ────────────────────────────────────────────────── */
.tut-toolbar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-sm); margin-bottom: var(--space-lg); }
.tut-result-info { font-size: .875rem; color: var(--color-muted); }
.tut-result-info strong { color: var(--color-primary); }

/* FIX 17: Active filter remove button with visible label */
.active-filter { display: inline-flex; align-items: center; gap: 6px; background: var(--color-accent-light); color: var(--color-accent-dark); padding: 4px 10px; border-radius: var(--radius-full); font-size: .75rem; font-weight: 700; }
.active-filter-remove { display: inline-flex; align-items: center; gap: 3px; color: var(--color-accent-dark); font-size: .7rem; font-weight: 700; text-decoration: none; border: 1px solid var(--color-accent-dark); border-radius: var(--radius-full); padding: 1px 6px; transition: all var(--transition); }
.active-filter-remove:hover { background: var(--color-accent-dark); color: var(--color-white); }

/* ── Cards ──────────────────────────────────────────────────── */
.tut-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-xl); }
@media (min-width: 640px) { .tut-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1280px) { .tut-grid { grid-template-columns: repeat(3, 1fr); } }
.tut-card { background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; transition: all var(--transition-slow); display: flex; flex-direction: column; }
.tut-card { contain: layout style; } /* P: CSS containment reduces repaint scope */
.tut-card:hover { border-color: var(--color-accent); box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.tut-card-img { position: relative; height: 190px; overflow: hidden; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); }
.tut-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.tut-card:hover .tut-card-img img { transform: scale(1.06); }
.tut-card-cat { position: absolute; top: 12px; left: 12px; background: var(--color-primary); color: var(--color-accent); padding: 4px 10px; border-radius: var(--radius-full); font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.tut-card-lang { position: absolute; top: 12px; right: 12px; background: rgba(0,0,0,.55); color: rgba(255,255,255,.9); padding: 3px 8px; border-radius: var(--radius-full); font-size: .65rem; font-weight: 600; backdrop-filter: blur(4px); }
.tut-card-body { padding: var(--space-lg); flex: 1; display: flex; flex-direction: column; }
.tut-card-title { font-family: var(--font-display); font-size: 1.05rem; font-weight: 700; color: var(--color-primary); line-height: 1.35; margin-bottom: var(--space-sm); }
.tut-card-title a { transition: color var(--transition); }
.tut-card-title a:hover { color: var(--color-accent); }
.tut-card-excerpt { font-size: .85rem; color: var(--color-text-light); line-height: 1.65; margin-bottom: var(--space-md); flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.tut-card-footer { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); padding-top: var(--space-md); border-top: 1px solid var(--color-border); flex-wrap: wrap; }
.tut-card-meta { font-size: .75rem; color: var(--color-muted); display: flex; flex-direction: column; gap: 2px; }

/* FIX 13: Author links styled */
.tut-card-author { font-weight: 600; color: var(--color-text-light); text-decoration: none; transition: color var(--transition); }
.tut-card-author:hover { color: var(--color-accent); text-decoration: underline; }

.tut-card-read { font-size: .8rem; font-weight: 700; color: var(--color-accent); display: inline-flex; align-items: center; gap: 4px; transition: color var(--transition), gap var(--transition); }
.tut-card-read:hover { color: var(--color-accent-dark); gap: 8px; }
.no-results { text-align: center; padding: var(--space-4xl) var(--space-xl); grid-column: 1 / -1; }
.no-results-icon { font-size: 4rem; margin-bottom: var(--space-lg); }
.no-results h3 { font-family: var(--font-display); font-size: 1.5rem; color: var(--color-primary); margin-bottom: var(--space-sm); }
.no-results p { color: var(--color-muted); margin-bottom: var(--space-xl); }
.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap; margin-top: var(--space-2xl); }
.page-link { display: inline-flex; align-items: center; justify-content: center; min-width: 38px; height: 38px; padding: 0 10px; border: 1.5px solid var(--color-border); border-radius: var(--radius-md); font-size: .875rem; font-weight: 600; color: var(--color-text-light); transition: all var(--transition); text-decoration: none; }
.page-link:hover { border-color: var(--color-accent); color: var(--color-accent); }
.page-link.active { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-primary); }
.page-link.disabled { opacity: .4; pointer-events: none; }
.mobile-filter-btn { display: flex; align-items: center; gap: 8px; background: var(--color-white); border: 1.5px solid var(--color-border); border-radius: var(--radius-full); padding: .55rem 1.1rem; font-family: var(--font-body); font-size: .875rem; font-weight: 600; color: var(--color-text); cursor: pointer; transition: all var(--transition); }
.mobile-filter-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
@media (min-width: 1024px) { .mobile-filter-btn { display: none; } }
.tut-sidebar.hidden-mobile { display: none; }
@media (min-width: 1024px) { .tut-sidebar.hidden-mobile { display: flex !important; } }
.sr-only { position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0; }