@font-face {
  font-family: "Signika";
  src: url("../fonts/signika.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inder";
  src: url("../fonts/inder.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Fenix";
  src: url("../fonts/fenix.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --k4-ink: #141c22;
  --k4-ink-soft: #2b3942;
  --k4-paper: #f1f5f8;
  --k4-surface: #ffffff;
  --k4-blue: #176f9f;
  --k4-blue-bright: #2f9fd8;
  --k4-berry: #cf2b2b;
  --k4-muted: #5d6f7a;
  --k4-line: #d5e1e8;
  --k4-line-dark: #24333d;
  --k4-header: #0e161c;
  --k4-header-soft: #14232c;
  --k4-code: #0c141a;
  --k4-code-text: #dce9f2;
  --k4-radius: 8px;
  --k4-radius-sm: 4px;
  --k4-shadow: 0 10px 30px rgba(15, 28, 37, 0.09);
  --k4-shadow-lift: 0 18px 50px rgba(15, 28, 37, 0.16);
  --k4-space: 20px;
  --k4-max: 1180px;
  --k4-font-head: "Signika", "Segoe UI", sans-serif;
  --k4-font-ui: "Inder", "Segoe UI", sans-serif;
  --k4-font-prose: "Fenix", Georgia, serif;
  --bulma-family-primary: "Inder", "Segoe UI", sans-serif;
  --bulma-family-secondary: "Signika", "Segoe UI", sans-serif;
  --bulma-link: #176f9f;
  --bulma-primary: #176f9f;
  --bulma-radius: 8px;
}

html {
  scroll-behavior: smooth;
}

body.k4-body {
  font-family: var(--k4-font-ui);
  color: var(--k4-ink-soft);
  background: var(--k4-paper);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.k4-body ::selection {
  background: #c9e7f6;
  color: var(--k4-ink);
}

.k4-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--k4-berry);
  color: #fff;
  padding: 0.7rem 1rem;
}
.k4-skip:focus {
  left: 1rem;
  top: 1rem;
}

.k4-shell {
  width: min(var(--k4-max), calc(100% - 2.5rem));
  margin-inline: auto;
}

.k4-body a {
  color: var(--k4-blue);
  text-decoration: none;
}
.k4-body a:hover {
  color: var(--k4-berry);
}

.k4-body :focus-visible,
.k4-body a:focus-visible,
.k4-body button:focus-visible,
.k4-body input:focus-visible,
.k4-body textarea:focus-visible {
  outline: 3px solid var(--k4-blue-bright);
  outline-offset: 3px;
  border-radius: 2px;
}

/* header */
.k4-top {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--k4-header);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.k4-top::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--k4-berry), var(--k4-blue-bright));
}
.k4-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 76px;
}
.k4-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: #fff;
  font-family: var(--k4-font-head);
  font-weight: 600;
  font-size: 1.18rem;
  letter-spacing: 0.01em;
  line-height: 1;
}
.k4-brand:hover {
  color: #fff;
}
.k4-brand svg {
  width: 30px;
  height: 30px;
  flex: none;
}
.k4-brand small {
  display: block;
  font-family: var(--k4-font-ui);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #8fb1c4;
  margin-top: 0.35rem;
}
.k4-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.k4-nav a,
.k4-nav button {
  font-family: var(--k4-font-ui);
  font-size: 0.86rem;
  color: #c3d5df;
  padding: 0.55rem 0.75rem;
  border-radius: var(--k4-radius-sm);
  background: none;
  border: 0;
  cursor: pointer;
  letter-spacing: 0.02em;
}
.k4-nav a:hover,
.k4-nav button:hover,
.k4-nav a.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}
.k4-nav .k4-nav-cta {
  margin-left: 0.4rem;
  background: var(--k4-berry);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 999px;
}
.k4-nav .k4-nav-cta:hover {
  background: #b82424;
  color: #fff;
}
.k4-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--k4-radius-sm);
  background: transparent;
  color: #fff;
  cursor: pointer;
}
.k4-menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}
.k4-drawer {
  display: none;
  background: var(--k4-header-soft);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.75rem 0 1.25rem;
}
.k4-drawer.is-open {
  display: block;
}
.k4-drawer a {
  display: block;
  color: #d7e6ee;
  padding: 0.65rem 0.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.95rem;
}

/* type */
.k4-kicker {
  font-family: var(--k4-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--k4-berry);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.k4-kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: currentColor;
}
.k4-h1,
.k4-h2,
.k4-h3,
.k4-wordmark {
  font-family: var(--k4-font-head);
  color: var(--k4-ink);
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: -0.012em;
}
.k4-h1 {
  font-size: clamp(2.3rem, 5.2vw, 4.1rem);
}
.k4-h2 {
  font-size: clamp(1.65rem, 3.2vw, 2.35rem);
}
.k4-h3 {
  font-size: 1.3rem;
}
.k4-lede {
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  line-height: 1.65;
  color: var(--k4-ink-soft);
  max-width: 62ch;
}
.k4-muted {
  color: var(--k4-muted);
}
.k4-small {
  font-size: 0.82rem;
}

/* buttons */
.k4-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--k4-font-ui);
  font-size: 0.9rem;
  line-height: 1;
  padding: 0.95rem 1.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}
.k4-btn-primary {
  background: var(--k4-berry);
  color: #fff;
  box-shadow: 0 8px 22px rgba(207, 43, 43, 0.24);
}
.k4-btn-primary:hover {
  background: #b82424;
  color: #fff;
  transform: translateY(-2px);
}
.k4-btn-ghost {
  background: transparent;
  color: #dceaf2;
  border-color: rgba(255, 255, 255, 0.32);
}
.k4-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateY(-2px);
}
.k4-btn-line {
  background: #fff;
  color: var(--k4-ink);
  border-color: var(--k4-line);
}
.k4-btn-line:hover {
  color: var(--k4-berry);
  border-color: var(--k4-berry);
}

/* hero */
.k4-hero {
  background: var(--k4-header);
  color: #e6f0f6;
  position: relative;
  overflow: hidden;
}
.k4-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse at 70% 30%, black, transparent 72%);
  pointer-events: none;
}
.k4-hero::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -120px;
  top: -140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 159, 216, 0.32), transparent 68%);
  pointer-events: none;
}
.k4-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: end;
  padding: clamp(3rem, 7vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
}
.k4-hero .k4-kicker {
  color: #f08a8a;
}
.k4-hero .k4-h1 {
  color: #fff;
  margin: 1rem 0 1.1rem;
  max-width: 15ch;
}
.k4-hero .k4-lede {
  color: #bfd2dd;
  max-width: 56ch;
}
.k4-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.8rem;
}
.k4-spec {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--k4-radius);
  padding: 1.4rem;
  backdrop-filter: blur(4px);
}
.k4-spec-title {
  font-family: var(--k4-font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #93b5c7;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.k4-spec-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
}
.k4-spec-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.k4-spec-row strong {
  font-family: var(--k4-font-head);
  font-size: 1.65rem;
  color: #fff;
  font-weight: 600;
  line-height: 1;
}
.k4-spec-row span {
  font-size: 0.78rem;
  color: #9fbccb;
  text-align: right;
}

/* sections */
.k4-section {
  padding: clamp(3rem, 6vw, 5rem) 0;
}
.k4-section-tight {
  padding: clamp(2rem, 4vw, 3rem) 0;
}
.k4-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}
.k4-section-head p {
  max-width: 46ch;
  color: var(--k4-muted);
  font-size: 0.92rem;
}
.k4-section-head .k4-h2 {
  margin-top: 0.4rem;
}
.k4-band {
  background: var(--k4-surface);
  border-top: 1px solid var(--k4-line);
  border-bottom: 1px solid var(--k4-line);
}

/* cards */
.k4-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}
.k4-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.k4-card {
  display: flex;
  flex-direction: column;
  background: var(--k4-surface);
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius);
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.k4-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--k4-shadow);
  border-color: #bfd4df;
}
.k4-card-media {
  display: block;
  aspect-ratio: 3 / 2;
  background: #dfeaf1;
  overflow: hidden;
}
.k4-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.k4-card:hover .k4-card-media img {
  transform: scale(1.035);
}
.k4-card-media--none {
  position: relative;
  background: linear-gradient(135deg, #12212a, #1d3542 55%, #2a4a5c);
}
.k4-card-media--none::before,
.k4-card-media--none::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
.k4-card-media--none::before {
  width: 130px;
  height: 130px;
  right: -30px;
  top: -30px;
}
.k4-card-media--none::after {
  width: 64px;
  height: 64px;
  left: 18px;
  bottom: 18px;
  background: rgba(207, 43, 43, 0.34);
  border: 0;
}
.k4-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.2rem 1.25rem 1.35rem;
  flex: 1;
}
.k4-tag {
  font-family: var(--k4-font-ui);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--k4-blue);
}
.k4-card-title {
  font-family: var(--k4-font-head);
  font-size: 1.22rem;
  line-height: 1.24;
  color: var(--k4-ink);
  font-weight: 600;
}
.k4-card-title a {
  color: inherit;
}
.k4-card:hover .k4-card-title a {
  color: var(--k4-berry);
}
.k4-card-text {
  font-size: 0.88rem;
  color: var(--k4-muted);
  line-height: 1.55;
}
.k4-card-foot {
  margin-top: auto;
  padding-top: 0.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.74rem;
  color: #62727d;
}

/* feature */
.k4-features {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 1.4rem;
}
.k4-feature {
  position: relative;
  min-height: 380px;
  border-radius: var(--k4-radius);
  overflow: hidden;
  background: var(--k4-header);
  color: #fff;
  display: flex;
  align-items: end;
}
.k4-feature img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  transition: transform 0.6s ease;
}
.k4-feature:hover img {
  transform: scale(1.03);
}
.k4-feature::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 17, 22, 0.1), rgba(9, 17, 22, 0.92) 78%);
}
.k4-feature-body {
  position: relative;
  z-index: 1;
  padding: 1.6rem;
}
.k4-feature-body h3 {
  font-family: var(--k4-font-head);
  font-size: 1.65rem;
  color: #fff;
  margin: 0.35rem 0 0.5rem;
  line-height: 1.15;
}
.k4-feature-body p {
  color: #c3d5df;
  font-size: 0.9rem;
  max-width: 44ch;
  margin-bottom: 1rem;
}
.k4-feature .k4-tag {
  color: #f08a8a;
}
.k4-feature-side {
  display: grid;
  gap: 1.4rem;
  grid-template-rows: 1fr 1fr;
}
.k4-feature-side .k4-feature {
  min-height: 0;
}
.k4-feature-side .k4-feature-body h3 {
  font-size: 1.3rem;
}

/* chips */
.k4-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.k4-chip {
  font-family: var(--k4-font-ui);
  font-size: 0.76rem;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--k4-line);
  background: #fff;
  color: var(--k4-ink-soft);
  cursor: pointer;
}
.k4-chip:hover {
  border-color: var(--k4-blue);
  color: var(--k4-blue);
}
.k4-chip.is-active {
  background: var(--k4-ink);
  border-color: var(--k4-ink);
  color: #fff;
}
.k4-card[hidden] {
  display: none;
}

.k4-more {
  margin-top: 2rem;
  text-align: center;
}

/* hubs */
.k4-hubs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}
.k4-hub {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  border-radius: var(--k4-radius);
  border: 1px solid var(--k4-line);
  background: #fff;
  min-height: 170px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.k4-hub:hover {
  border-color: var(--k4-blue-bright);
  transform: translateY(-3px);
}
.k4-hub-num {
  font-family: var(--k4-font-head);
  font-size: 2rem;
  color: var(--k4-line);
  line-height: 1;
}
.k4-hub strong {
  font-family: var(--k4-font-head);
  font-size: 1.1rem;
  color: var(--k4-ink);
}
.k4-hub span {
  font-size: 0.82rem;
  color: var(--k4-muted);
  line-height: 1.5;
}

/* about strip */
.k4-strip {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}
.k4-portrait {
  aspect-ratio: 4 / 3;
  border-radius: var(--k4-radius);
  background: linear-gradient(135deg, #14232c, #1e3947);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.k4-portrait::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px);
  background-size: 14px 14px;
}
.k4-portrait svg {
  width: 120px;
  height: 120px;
  position: relative;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.35));
}
.k4-quote {
  font-family: var(--k4-font-prose);
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--k4-ink);
  border-left: 3px solid var(--k4-berry);
  padding-left: 1.1rem;
  margin: 1.25rem 0;
}

/* article */
.k4-article-head {
  padding: clamp(2.2rem, 5vw, 4rem) 0 1.5rem;
}
.k4-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  font-size: 0.75rem;
  color: #7c8e99;
  margin-bottom: 1.2rem;
}
.k4-breadcrumb a {
  color: var(--k4-blue);
}
.k4-breadcrumb span {
  color: #6b7c86;
}
.k4-article-title {
  font-family: var(--k4-font-head);
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  line-height: 1.1;
  color: var(--k4-ink);
  margin: 0.6rem 0 0.9rem;
  letter-spacing: -0.015em;
}
.k4-article-summary {
  font-size: 1.08rem;
  color: var(--k4-ink-soft);
  max-width: 68ch;
  line-height: 1.6;
}
.k4-byline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  margin-top: 1.3rem;
  font-size: 0.78rem;
  color: #6f818c;
}
.k4-byline a {
  color: var(--k4-blue);
}
.k4-hero-img {
  margin: 1.8rem 0 0;
  border-radius: var(--k4-radius);
  overflow: hidden;
  border: 1px solid var(--k4-line);
  background: #e3edf3;
}
.k4-hero-img img {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  display: block;
}
.k4-article-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
  padding: 1.5rem 0 3rem;
}
.k4-prose {
  font-family: var(--k4-font-prose);
  font-size: 1.13rem;
  line-height: 1.78;
  color: #27343c;
  min-width: 0;
}
.k4-prose > *:first-child {
  margin-top: 0;
}
.k4-prose p,
.k4-prose ul,
.k4-prose ol,
.k4-prose blockquote,
.k4-prose pre,
.k4-prose table,
.k4-prose figure {
  margin: 0 0 1.35em;
}
.k4-prose h1,
.k4-prose h2,
.k4-prose h3,
.k4-prose h4 {
  font-family: var(--k4-font-head);
  color: var(--k4-ink);
  line-height: 1.22;
  margin: 1.9em 0 0.6em;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.k4-prose h1 {
  font-size: 1.9rem;
}
.k4-prose h2 {
  font-size: 1.55rem;
}
.k4-prose h3 {
  font-size: 1.28rem;
}
.k4-prose h4 {
  font-size: 1.1rem;
}
.k4-prose ul,
.k4-prose ol {
  padding-left: 1.35em;
}
.k4-prose ul {
  list-style: disc;
}
.k4-prose ol {
  list-style: decimal;
}
.k4-prose li {
  margin: 0.35em 0;
}
.k4-prose li::marker {
  color: var(--k4-blue);
}
.k4-prose a {
  color: var(--k4-blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.k4-prose a:hover {
  color: var(--k4-berry);
}
.k4-prose strong {
  color: var(--k4-ink);
  font-weight: 700;
}
.k4-prose blockquote {
  border-left: 3px solid var(--k4-berry);
  padding: 0.2rem 0 0.2rem 1.2rem;
  color: #4a5a64;
  font-style: italic;
}
.k4-prose blockquote p:last-child {
  margin-bottom: 0;
}
.k4-prose img {
  max-width: 100%;
  height: auto;
  border-radius: var(--k4-radius-sm);
  border: 1px solid var(--k4-line);
  display: block;
}
.k4-prose figure {
  margin-inline: 0;
}
.k4-prose figcaption {
  font-family: var(--k4-font-ui);
  font-size: 0.78rem;
  color: var(--k4-muted);
  margin-top: 0.4rem;
}
.k4-prose code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.82em;
  background: #e8f0f5;
  color: #17394a;
  padding: 0.12em 0.35em;
  border-radius: 3px;
  word-break: break-word;
}
.k4-prose pre {
  background: var(--k4-code);
  color: var(--k4-code-text);
  padding: 1.1rem 1.2rem;
  border-radius: var(--k4-radius);
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.6;
  border: 1px solid #1d2c37;
}
.k4-prose pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
  white-space: pre;
  word-break: normal;
}
.k4-prose hr {
  border: 0;
  border-top: 1px solid var(--k4-line);
  margin: 2em 0;
}
.k4-prose table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--k4-font-ui);
  font-size: 0.82rem;
  display: block;
  overflow-x: auto;
  white-space: nowrap;
}
.k4-prose th,
.k4-prose td {
  border: 1px solid var(--k4-line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}
.k4-prose th {
  background: #eaf2f6;
  font-family: var(--k4-font-head);
  font-weight: 600;
  color: var(--k4-ink);
}
.k4-prose tr:nth-child(even) td {
  background: #f8fbfd;
}
.k4-prose sup a {
  text-decoration: none;
  font-size: 0.72em;
  padding: 0 0.1em;
}
.k4-prose .footnotes,
.k4-prose section {
  font-size: 0.9rem;
  color: #4f5f69;
}

.k4-aside {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.k4-aside-card {
  background: #fff;
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius);
  padding: 1.15rem;
}
.k4-aside-card h4 {
  font-family: var(--k4-font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--k4-muted);
  margin-bottom: 0.7rem;
}
.k4-aside-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.k4-aside-card li {
  margin: 0 0 0.55rem;
  font-size: 0.84rem;
  line-height: 1.45;
}
.k4-aside-card li:last-child {
  margin-bottom: 0;
}
.k4-aside-card a {
  color: var(--k4-ink-soft);
}
.k4-aside-card a:hover {
  color: var(--k4-berry);
}
.k4-refs {
  border-top: 1px solid var(--k4-line);
  margin-top: 2.5rem;
  padding-top: 1.5rem;
}
.k4-refs h2 {
  font-family: var(--k4-font-head);
  font-size: 1.2rem;
  color: var(--k4-ink);
  margin: 0 0 0.35rem;
}
.k4-refs p {
  font-size: 0.78rem;
  color: var(--k4-muted);
  margin-bottom: 0.9rem;
}
.k4-ref-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.25rem 1.5rem;
}
.k4-ref-grid a {
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
  font-family: var(--k4-font-ui);
  font-size: 0.8rem;
  color: var(--k4-blue);
  padding: 0.35rem 0;
  border-bottom: 1px dotted #cbd9e1;
}
.k4-ref-grid a::before {
  content: "↗";
  color: #9bb0bb;
  font-size: 0.7rem;
}
.k4-ref-grid a:hover {
  color: var(--k4-berry);
}

.k4-adjacent {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  border-top: 1px solid var(--k4-line);
  padding-top: 1.5rem;
  margin-top: 2rem;
}
.k4-adjacent a {
  display: block;
  padding: 1rem 1.1rem;
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius);
  background: #fff;
  font-size: 0.86rem;
  color: var(--k4-ink);
  line-height: 1.4;
}
.k4-adjacent a:hover {
  border-color: var(--k4-blue);
  color: var(--k4-berry);
}
.k4-adjacent small {
  display: block;
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--k4-muted);
  margin-bottom: 0.35rem;
}

/* related */
.k4-related {
  padding: 2.5rem 0 0;
  border-top: 1px solid var(--k4-line);
  margin-top: 2.5rem;
}
.k4-related h2 {
  font-family: var(--k4-font-head);
  font-size: 1.35rem;
  color: var(--k4-ink);
  margin-bottom: 1rem;
}

/* hub pages */
.k4-page-head {
  background: var(--k4-header);
  color: #dceaf2;
  padding: clamp(2.6rem, 6vw, 4.5rem) 0 clamp(2.2rem, 5vw, 3.5rem);
  position: relative;
  overflow: hidden;
}
.k4-page-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(90deg, transparent, black 40%, transparent);
}
.k4-page-head .k4-shell {
  position: relative;
}
.k4-page-head .k4-h1 {
  color: #fff;
  margin: 0.6rem 0 0.8rem;
}
.k4-page-head p {
  color: #b9cdd9;
  max-width: 66ch;
}
.k4-page-head .k4-kicker {
  color: #f08a8a;
}
.k4-page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: 1.3rem;
  font-size: 0.76rem;
  color: #91abb9;
}
.k4-page-meta strong {
  color: #fff;
  font-family: var(--k4-font-head);
  font-size: 1rem;
  font-weight: 600;
}

/* project list */
.k4-projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
}
.k4-project {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  background: #fff;
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius);
  padding: 0.8rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.k4-project:hover {
  border-color: var(--k4-blue-bright);
  transform: translateY(-2px);
}
.k4-project-media {
  aspect-ratio: 4 / 3;
  border-radius: var(--k4-radius-sm);
  overflow: hidden;
  background: linear-gradient(135deg, #1b2f3a, #2b4c5e);
}
.k4-project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.k4-project strong {
  display: block;
  font-family: var(--k4-font-head);
  font-size: 1.02rem;
  color: var(--k4-ink);
  line-height: 1.25;
  margin-bottom: 0.25rem;
}
.k4-project span {
  display: block;
  font-size: 0.8rem;
  color: var(--k4-muted);
  line-height: 1.45;
}

/* books / podcasts */
.k4-shelf {
  border-top: 1px solid var(--k4-line);
}
.k4-shelf-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) 120px 90px;
  gap: 1rem;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--k4-line);
}
.k4-shelf-index {
  font-family: var(--k4-font-head);
  color: #a9b9c2;
  font-size: 1rem;
}
.k4-shelf-title {
  font-family: var(--k4-font-head);
  font-size: 1.05rem;
  color: var(--k4-ink);
  line-height: 1.25;
}
.k4-shelf-author {
  font-size: 0.8rem;
  color: var(--k4-muted);
}
.k4-shelf-date {
  font-size: 0.74rem;
  color: var(--k4-muted);
  text-align: right;
}
.k4-stars {
  position: relative;
  display: inline-block;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: #ccd8df;
  white-space: nowrap;
}
.k4-stars span {
  position: absolute;
  left: 0;
  top: 0;
  overflow: hidden;
  color: var(--k4-berry);
  white-space: nowrap;
}

/* painting */
.k4-paint {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.k4-paint-item {
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius);
  padding: 1.1rem;
  background: #fff;
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.k4-paint-item:nth-child(4n + 1) {
  background: linear-gradient(150deg, #f2e8dc, #fff);
}
.k4-paint-item:nth-child(4n + 2) {
  background: linear-gradient(150deg, #e2edf2, #fff);
}
.k4-paint-item:nth-child(4n + 3) {
  background: linear-gradient(150deg, #f4e4e4, #fff);
}
.k4-paint-item:nth-child(4n + 4) {
  background: linear-gradient(150deg, #e8eee3, #fff);
}
.k4-paint-item strong {
  font-family: var(--k4-font-head);
  font-size: 1.2rem;
  color: var(--k4-ink);
  line-height: 1.2;
}
.k4-paint-item span {
  font-size: 0.76rem;
  color: var(--k4-muted);
}
.k4-paint-item::after {
  content: "";
  position: absolute;
  right: -18px;
  bottom: -18px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: rgba(207, 43, 43, 0.08);
}

/* new yorker */
.k4-dates {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
}
.k4-date {
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius-sm);
  padding: 0.75rem;
  font-family: var(--k4-font-ui);
  font-size: 0.8rem;
  color: var(--k4-ink-soft);
  background: #fff;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}
.k4-date span {
  color: #6b7c86;
}

/* contact */
.k4-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}
.k4-form {
  display: grid;
  gap: 0.75rem;
  background: #fff;
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius);
  padding: 1.3rem;
}
.k4-form label {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--k4-muted);
}
.k4-form input,
.k4-form textarea {
  width: 100%;
  font-family: var(--k4-font-ui);
  font-size: 0.92rem;
  color: var(--k4-ink);
  background: #f8fbfd;
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius-sm);
  padding: 0.75rem 0.8rem;
}
.k4-form textarea {
  min-height: 150px;
  resize: vertical;
}
.k4-form input:focus,
.k4-form textarea:focus {
  outline: none;
  border-color: var(--k4-blue);
  box-shadow: 0 0 0 3px rgba(47, 159, 216, 0.16);
}
.k4-contact-list {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0 0;
}
.k4-contact-list li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--k4-line);
  font-size: 0.9rem;
}
.k4-contact-list strong {
  display: block;
  font-family: var(--k4-font-head);
  font-size: 0.9rem;
  color: var(--k4-ink);
  margin-bottom: 0.15rem;
}

/* footer */
.k4-footer {
  background: var(--k4-header);
  color: #a9bfcb;
  margin-top: 0;
  padding: 3rem 0 1.2rem;
}
.k4-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.k4-footer h2 {
  font-family: var(--k4-font-head);
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 0.4rem;
}
.k4-footer h3 {
  font-family: var(--k4-font-ui);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #7d9aa9;
  margin-bottom: 0.75rem;
}
.k4-footer p {
  font-size: 0.82rem;
  line-height: 1.6;
  max-width: 34ch;
}
.k4-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.k4-footer li {
  margin-bottom: 0.4rem;
  font-size: 0.82rem;
}
.k4-footer a {
  color: #b9cdd9;
}
.k4-footer a:hover {
  color: #fff;
}
.k4-footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.1rem;
  font-size: 0.72rem;
  color: #7793a2;
}
.k4-footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #fff;
}
.k4-footer-brand svg {
  width: 22px;
  height: 22px;
}

/* 404 */
.k4-404 {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4rem 0;
}
.k4-404 .k4-h1 {
  font-size: clamp(4rem, 12vw, 8rem);
  color: var(--k4-line);
  line-height: 0.9;
  margin-bottom: 1rem;
}

/* reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

@media (max-width: 1024px) {
  .k4-hero-inner,
  .k4-article-wrap,
  .k4-contact-grid {
    grid-template-columns: 1fr;
  }
  .k4-spec {
    max-width: 480px;
  }
  .k4-aside {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .k4-hubs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .k4-features {
    grid-template-columns: 1fr;
  }
  .k4-feature-side {
    grid-template-rows: none;
    grid-template-columns: 1fr 1fr;
  }
  .k4-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .k4-projects {
    grid-template-columns: 1fr;
  }
  .k4-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .k4-paint {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .k4-dates {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .k4-nav {
    display: none;
  }
  .k4-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    gap: 0;
    padding: 0.7rem 1.25rem 1.1rem;
    background: var(--k4-header-soft);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  }
  .k4-nav.is-open a {
    padding: 0.8rem 0.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 0;
  }
  .k4-nav.is-open .k4-nav-cta {
    margin: 0.6rem 0 0;
    text-align: center;
    border-bottom: 0;
  }
  .k4-menu-toggle {
    display: block;
  }
  .k4-hero-inner {
    padding: 2.6rem 0 2.4rem;
  }
  .k4-hero .k4-h1 {
    max-width: none;
  }
  .k4-hero .k4-lede {
    font-size: 1rem;
  }
  .k4-features,
  .k4-feature-side,
  .k4-grid,
  .k4-grid-2,
  .k4-hubs,
  .k4-aside,
  .k4-adjacent,
  .k4-footer-grid,
  .k4-paint {
    grid-template-columns: 1fr;
  }
  .k4-section-head {
    align-items: start;
    flex-direction: column;
    gap: 0.6rem;
  }
  .k4-feature {
    min-height: 300px;
  }
  .k4-feature-side .k4-feature {
    min-height: 240px;
  }
  .k4-article-wrap {
    padding-top: 1rem;
  }
  .k4-prose {
    font-size: 1.06rem;
  }
  .k4-ref-grid {
    grid-template-columns: 1fr;
  }
  .k4-shelf-row {
    grid-template-columns: 34px minmax(0, 1fr) 80px;
  }
  .k4-shelf-date {
    display: none;
  }
  .k4-dates {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .k4-strip {
    grid-template-columns: 1fr;
  }
  .k4-portrait {
    max-width: 340px;
  }
  .k4-project {
    grid-template-columns: 88px minmax(0, 1fr);
  }
  .k4-footer-grid {
    gap: 1.5rem;
  }
  .k4-body {
    font-size: 0.98rem;
  }
}

@media (max-width: 420px) {
  .k4-shell {
    width: min(var(--k4-max), calc(100% - 1.6rem));
  }
  .k4-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .k4-btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}


/* button link colours need to beat the global body link rule */
.k4-body a.k4-btn-primary,
.k4-body a.k4-btn-primary:hover {
  color: #fff;
}
.k4-body a.k4-btn-ghost {
  color: #dceaf2;
}
.k4-body a.k4-btn-ghost:hover {
  color: #fff;
}
.k4-body a.k4-btn-line {
  color: var(--k4-ink);
}
.k4-body a.k4-btn-line:hover {
  color: var(--k4-berry);
}

/* responsive media embeds */
.k4-prose iframe {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: var(--k4-radius-sm);
  background: #dbe7ee;
}
.k4-prose video {
  max-width: 100%;
  height: auto;
}

.k4-card-media--none.k4-p1 { background: linear-gradient(135deg, #12212a, #1d3542 55%, #2a4a5c); }
.k4-card-media--none.k4-p2 { background: linear-gradient(135deg, #1c2620, #344a3a 55%, #53684a); }
.k4-card-media--none.k4-p3 { background: linear-gradient(135deg, #291d22, #472c34 55%, #6b454f); }
.k4-card-media--none.k4-p4 { background: linear-gradient(135deg, #18202d, #2a3a51 55%, #405874); }


/* editorial homepage */
.k4-front {
  background: var(--k4-header);
  color: #e6f0f6;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.k4-front::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 75% 20%, black, transparent 70%);
  pointer-events: none;
}
.k4-front .k4-shell { position: relative; }
.k4-front-masthead {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: end;
  padding: clamp(2.6rem, 6vw, 4.6rem) 0 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}
.k4-front-title {
  font-family: var(--k4-font-head);
  font-size: clamp(2.3rem, 5.4vw, 4.5rem);
  line-height: 1.02;
  color: #fff;
  letter-spacing: -0.02em;
  margin: 0.8rem 0 0;
  max-width: 16ch;
}
.k4-front .k4-kicker { color: #f08a8a; }
.k4-front-note {
  color: #b9cdd9;
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 40ch;
  padding-bottom: 0.4rem;
}
.k4-front-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.55fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  padding: 2rem 0 clamp(3rem, 6vw, 4.5rem);
  align-items: start;
}
.k4-lead-media {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--k4-radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: #182a34;
}
.k4-lead-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.k4-lead-body { padding-top: 1.4rem; }
.k4-lead .k4-tag { color: #f08a8a; }
.k4-lead-title {
  font-family: var(--k4-font-head);
  font-size: clamp(1.8rem, 3.2vw, 2.75rem);
  line-height: 1.08;
  margin: 0.5rem 0 0.8rem;
  letter-spacing: -0.015em;
}
.k4-body a.k4-lead-title-link { color: #fff; }
.k4-lead-title a { color: #fff; }
.k4-lead-title a:hover { color: #f08a8a; }
.k4-deck {
  color: #bfd2dd;
  font-size: 1.02rem;
  line-height: 1.65;
  max-width: 62ch;
}
.k4-lead .k4-byline { color: #82a0b0; }
.k4-lead .k4-byline a { color: #dceaf2; }
.k4-front .k4-read,
.k4-feature-lead .k4-read {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}
.k4-front .k4-read:hover,
.k4-feature-lead .k4-read:hover {
  color: #f08a8a;
  border-color: #f08a8a;
}
.k4-read {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.2rem;
  font-family: var(--k4-font-ui);
  font-size: 0.85rem;
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.2rem;
}
.k4-feature-row .k4-read {
  color: var(--k4-berry);
  margin-top: 0.6rem;
  font-size: 0.78rem;
}
.k4-latest {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 1rem;
}
.k4-latest-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}
.k4-latest-head h2 {
  font-family: var(--k4-font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #9fbccb;
  font-weight: 400;
}
.k4-latest-head a {
  font-size: 0.72rem;
  color: #dceaf2;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}
.k4-latest-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.k4-latest-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.14);
}
.k4-latest-num {
  font-family: var(--k4-font-head);
  font-size: 0.85rem;
  color: #6f8d9d;
}
.k4-body .k4-latest-item a {
  color: #e6f0f6;
  font-family: var(--k4-font-head);
  font-size: 1rem;
  line-height: 1.25;
}
.k4-body .k4-latest-item a:hover { color: #f08a8a; }
.k4-latest-meta {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.7rem;
  color: #8aa6b4;
}
.k4-latest-all {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.78rem;
  color: #dceaf2;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}
.k4-feature-spread {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 1.4rem;
}
.k4-feature-lead {
  position: relative;
  min-height: 520px;
  border-radius: var(--k4-radius);
  overflow: hidden;
  background: #101a21;
  display: flex;
  align-items: end;
}
.k4-feature-lead img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.62;
  transition: transform 0.6s ease;
}
.k4-feature-lead:hover img { transform: scale(1.03); }
.k4-feature-lead::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 17, 22, 0.08), rgba(9, 17, 22, 0.94) 76%);
}
.k4-feature-lead-body {
  position: relative;
  z-index: 1;
  padding: clamp(1.4rem, 3vw, 2.2rem);
}
.k4-feature-lead .k4-tag { color: #f08a8a; }
.k4-feature-lead h3 {
  font-family: var(--k4-font-head);
  color: #fff;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.08;
  margin: 0.5rem 0 0.7rem;
  max-width: 18ch;
}
.k4-feature-lead h3 a { color: #fff; }
.k4-feature-lead h3 a:hover { color: #f08a8a; }
.k4-feature-lead p {
  color: #c3d5df;
  max-width: 46ch;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.k4-feature-rows {
  display: grid;
  gap: 1.4rem;
  grid-template-rows: 1fr 1fr;
}
.k4-body a.k4-feature-row {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 1.1rem;
  align-items: stretch;
  color: inherit;
  background: #fff;
  border: 1px solid var(--k4-line);
  border-radius: var(--k4-radius);
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.k4-body a.k4-feature-row:hover {
  color: inherit;
  border-color: var(--k4-blue-bright);
  transform: translateY(-2px);
}
.k4-feature-row-media {
  background: #dfeaf1;
  min-height: 150px;
}
.k4-feature-row-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.k4-feature-row-body {
  padding: 1rem 1.1rem 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.k4-feature-row h3 {
  font-family: var(--k4-font-head);
  font-size: 1.15rem;
  line-height: 1.2;
  color: var(--k4-ink);
}
.k4-feature-row p {
  font-size: 0.82rem;
  color: var(--k4-muted);
  line-height: 1.5;
}
.k4-index-year {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--k4-line);
}
.k4-index-year:last-child { border-bottom: 1px solid var(--k4-line); }
.k4-index-year-label {
  position: sticky;
  top: 100px;
  align-self: start;
}
.k4-index-year-label span {
  display: block;
  font-family: var(--k4-font-head);
  font-size: 2.6rem;
  line-height: 1;
  color: var(--k4-ink);
}
.k4-index-year-label small {
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--k4-muted);
}
.k4-index-rows { display: flex; flex-direction: column; }
.k4-body a.k4-index-row {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) 120px 24px;
  gap: 1rem;
  align-items: baseline;
  padding: 0.7rem 0;
  border-bottom: 1px dotted #cbd9e1;
  color: var(--k4-ink-soft);
}
.k4-body a.k4-index-row:last-child { border-bottom: 0; }
.k4-body a.k4-index-row:hover { color: var(--k4-berry); }
.k4-index-date {
  font-size: 0.72rem;
  color: var(--k4-muted);
  letter-spacing: 0.04em;
}
.k4-index-title {
  font-family: var(--k4-font-head);
  font-size: 1.02rem;
  line-height: 1.25;
  color: inherit;
}
.k4-index-tag {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--k4-blue);
  text-align: right;
}
.k4-index-arrow { color: #a9b9c2; text-align: right; }
.k4-departments {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 2rem;
}
.k4-body a.k4-dept {
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr) 24px;
  gap: 1rem;
  align-items: baseline;
  padding: 1.2rem 0;
  border-top: 1px solid var(--k4-line);
  color: var(--k4-ink);
}
.k4-body a.k4-dept:hover { color: var(--k4-berry); }
.k4-dept-num {
  font-family: var(--k4-font-head);
  font-size: 1.1rem;
  color: #a9b9c2;
}
.k4-dept strong {
  display: block;
  font-family: var(--k4-font-head);
  font-size: 1.35rem;
  font-weight: 600;
  color: inherit;
}
.k4-dept-desc {
  font-size: 0.82rem;
  color: var(--k4-muted);
  line-height: 1.5;
}
.k4-dept-arrow { color: #a9b9c2; }
.k4-colophon-line {
  margin-top: 1.4rem;
  font-size: 0.72rem;
  color: #8a9aa4;
  letter-spacing: 0.02em;
}

@media (max-width: 1024px) {
  .k4-front-masthead,
  .k4-front-grid {
    grid-template-columns: 1fr;
  }
  .k4-front-title { max-width: none; }
  .k4-front-note { max-width: 62ch; }
  .k4-feature-spread { grid-template-columns: 1fr; }
  .k4-feature-rows {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: none;
  }
  .k4-index-year { grid-template-columns: 100px minmax(0, 1fr); }
}

@media (max-width: 760px) {
  .k4-feature-rows { grid-template-columns: 1fr; }
  .k4-feature-lead { min-height: 360px; }
  .k4-feature-row {
    grid-template-columns: 100px minmax(0, 1fr);
  }
  .k4-index-year {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
  .k4-index-year-label {
    position: static;
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
  }
  .k4-index-year-label span { font-size: 1.9rem; }
  .k4-body a.k4-index-row {
    grid-template-columns: 56px minmax(0, 1fr) 20px;
    gap: 0.7rem;
  }
  .k4-index-tag { display: none; }
  .k4-departments { grid-template-columns: 1fr; }
  .k4-body a.k4-index-row { padding: 0.6rem 0; }
}