/* (c) 2026 Sentys Inc. All rights reserved. */







.kh-hero {
  background: var(--black);
  padding: 120px 48px 64px;
}

.kh-hero__inner {
  max-width: 900px;
}

.kh-hero__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(48px, 8vw, 80px);
  line-height: 0.92;
  text-transform: uppercase;
  color: var(--white);
  margin: 0 0 16px;
}

.kh-hero__subtitle {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.5;
  color: var(--gray-light);
  max-width: 600px;
}


.kh-search {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 48px 0;
}

.kh-search__bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--gray-bg);
  border-radius: 4px;
  padding: 12px 16px;
  border: 1px solid transparent;
  transition: border-color 0.2s;
}

.kh-search__bar:focus-within {
  border-color: var(--black);
}

.kh-search__icon {
  flex-shrink: 0;
  opacity: 0.4;
}

.kh-search__input {
  flex: 1;
  border: none;
  background: transparent;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--black);
  outline: none;
}

.kh-search__input::placeholder {
  color: rgba(0, 0, 0, 0.35);
}

.kh-search__filters {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.kh-filter-pill {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 3px;
  border: 1px solid var(--gray-light);
  background: var(--white);
  color: var(--black);
  cursor: pointer;
  transition: all 0.15s;
}

.kh-filter-pill:hover {
  border-color: var(--black);
}

.kh-filter-pill.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}


.kh-domains {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 48px 80px;
}

.kh-domain {
  margin-bottom: 48px;
}

.kh-domain__header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--black);
}

.kh-domain__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 28px;
  text-transform: uppercase;
  color: var(--black);
  margin: 0;
}

.kh-domain__count {
  font-family: var(--font-body);
  font-size: 13px;
  color: rgba(0, 0, 0, 0.4);
}

.kh-domain__articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.kh-article-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--gray-bg);
  border-radius: 4px;
  border: 1px solid transparent;
  transition: border-color 0.2s, transform 0.2s;
  text-decoration: none;
  color: var(--black);
  min-height: 140px;
}

.kh-article-card:hover {
  border-color: var(--black);
  transform: translateY(-2px);
}

.kh-article-card__title {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
  margin: 0 0 8px;
}

.kh-article-card__excerpt {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(0, 0, 0, 0.55);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kh-article-card__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.kh-article-card__time {
  font-size: 12px;
  color: rgba(0, 0, 0, 0.4);
}

.kh-domain__empty {
  font-size: 14px;
  color: rgba(0, 0, 0, 0.35);
  font-style: italic;
  padding: 16px 0;
}


.kh-domain.kh-hidden,
.kh-article-card.kh-hidden {
  display: none;
}




.ka {
  max-width: 800px;
  margin: 0 auto;
  padding: 100px 48px 80px;
}


.ka-breadcrumb {
  font-family: var(--font-body);
  font-size: 13px;
  color: rgba(0, 0, 0, 0.45);
  margin-bottom: 24px;
}

.ka-breadcrumb a {
  color: rgba(0, 0, 0, 0.45);
  text-decoration: none;
  transition: color 0.15s;
}

.ka-breadcrumb a:hover {
  color: var(--black);
}

.ka-breadcrumb__sep {
  margin: 0 6px;
}


.ka-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.05;
  text-transform: uppercase;
  color: var(--black);
  margin: 0 0 16px;
}


.ka-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
  font-family: var(--font-body);
  font-size: 13px;
  color: rgba(0, 0, 0, 0.45);
}

.ka-meta__time::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.25);
  margin-right: 8px;
  vertical-align: middle;
}

.ka-meta__domain {
  color: rgba(0, 0, 0, 0.35);
}

.ka-meta__domain::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.25);
  margin-right: 8px;
  vertical-align: middle;
}


.ka-badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 2px;
}

.ka-badge--beginner {
  background: #e8f5e9;
  color: #2e7d32;
}

.ka-badge--intermediate {
  background: #fff3e0;
  color: #e65100;
}

.ka-badge--advanced {
  background: #fce4ec;
  color: #c62828;
}

.ka-badge--sm {
  font-size: 10px;
  padding: 2px 8px;
}


.ka-body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--black);
}

.ka-body h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 24px;
  text-transform: uppercase;
  margin: 48px 0 16px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--green);
}

.ka-body h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 19px;
  text-transform: uppercase;
  margin: 32px 0 12px;
}

.ka-body p {
  margin: 0 0 20px;
}

.ka-body ul,
.ka-body ol {
  margin: 0 0 20px;
  padding-left: 24px;
  list-style: disc;
}

.ka-body ol {
  list-style: decimal;
}

.ka-body li {
  margin-bottom: 6px;
}

.ka-body em {
  font-style: italic;
}

.ka-body strong {
  font-weight: 600;
}

.ka-body sub,
.ka-body sup {
  font-size: 0.75em;
  line-height: 0;
}

.ka-body blockquote {
  margin: 24px 0;
  padding: 16px 24px;
  border-left: 3px solid var(--green);
  background: var(--gray-bg);
  font-size: 15px;
  font-style: italic;
}

.ka-body code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  background: var(--gray-bg);
  padding: 2px 6px;
  border-radius: 2px;
}

.ka-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.ka-body th,
.ka-body td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--gray-light);
}

.ka-body th {
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: rgba(0, 0, 0, 0.55);
}


.ka-related {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-light);
}

.ka-related__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 22px;
  text-transform: uppercase;
  margin: 0 0 24px;
}

.ka-related__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.ka-product-card {
  display: block;
  background: var(--gray-bg);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid transparent;
  transition: border-color 0.2s, transform 0.2s;
  text-decoration: none;
  color: var(--black);
}

.ka-product-card:hover {
  border-color: var(--black);
  transform: translateY(-2px);
}

.ka-product-card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #e0e0e0;
}

.ka-product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ka-product-card__body {
  padding: 16px;
}

.ka-product-card__name {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 4px;
}

.ka-product-card__desc {
  font-size: 12px;
  color: rgba(0, 0, 0, 0.5);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}


.ka-more {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-light);
}

.ka-more__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 22px;
  text-transform: uppercase;
  margin: 0 0 16px;
}

.ka-more__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.ka-more__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-light);
  text-decoration: none;
  color: var(--black);
  transition: color 0.15s;
}

.ka-more__item:hover {
  color: rgba(0, 0, 0, 0.6);
}

.ka-more__item-title {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
}

.ka-more__item-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(0, 0, 0, 0.4);
  flex-shrink: 0;
}




@media (max-width: 768px) {
  .kh-hero { padding: 96px 24px 48px; }
  .kh-search { padding: 24px 24px 0; }
  .kh-domains { padding: 32px 24px 64px; }
  .kh-domain__articles { grid-template-columns: 1fr; }
  .ka { padding: 88px 24px 64px; }
  .ka-related__grid { grid-template-columns: 1fr; }
  .ka-more__item { flex-direction: column; align-items: flex-start; gap: 6px; }
}



.ref-block { margin-top: 1.5em; }
.ref-block strong { display: block; margin-bottom: 4px; }
a.ref-line, span.ref-line {
  display: block;
  color: #666;
  padding: 3px 8px;
  margin: 0 -8px;
  border-radius: 4px;
  line-height: 1.5;
  text-decoration: none;
}
a.ref-line { cursor: pointer; transition: background 0.15s ease, color 0.15s ease; }
a.ref-line:hover { background: rgba(0,0,0,0.04); color: #333; }
a.ref-line em, span.ref-line em { color: inherit; }