/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V5
 * Hallmark · macrostructure: Full-screen photographic hero + asymmetric audience gallery + in-page interactive topic register
 * genre: technical · tone: formal and institutional · anchor hue: Hangsu blue with local defense-red UI accents
 * design-system: design.md · variant: localized-defense-accent · nav/footer: inherited from production site
 * contrast: pass (40–41) · honest: pass (46) · chrome: pass (47) · mobile: pass (34, 49, 50–57)
 */

:root {
  --defense-red: var(--hs-defense-red);
  --defense-red-dark: var(--hs-defense-red-deep);
  --defense-red-soft: var(--hs-defense-red-soft);
  --defense-navy: var(--hs-color-night);
  --defense-navy-2: var(--hs-color-night-mid);
  --defense-paper: var(--hs-color-paper);
  --defense-white: var(--hs-color-on-dark);
  --defense-ink: var(--hs-color-ink);
  --defense-muted: var(--hs-color-ink-soft);
  --defense-rule: var(--hs-color-rule);
  --defense-cyan: var(--hs-color-cyan);
  --defense-violet: var(--hs-color-primary);
  --defense-space-sm: 1rem;
  --defense-space-md: 1.5rem;
  --defense-space-lg: 2rem;
  --defense-space-xl: 3rem;
  --defense-space-2xl: 5rem;
  --defense-radius-sm: 12px;
  --defense-radius-md: 16px;
  --defense-radius-lg: 20px;
  --defense-radius-xl: 24px;
  --defense-ease: var(--hs-ease-out);
  --defense-topic-shadow: 0 20px 50px rgba(10, 37, 64, 0.1);
  --defense-cooperation-surface: color-mix(in oklch, var(--defense-navy-2) 42%, var(--defense-navy));
  --defense-cooperation-rule: color-mix(in oklch, var(--defense-white) 14%, transparent);
  --defense-cooperation-shadow: 0 30px 72px rgba(0, 0, 0, 0.3);
}

html,
body {
  overflow-x: clip;
}

body {
  background: var(--defense-paper);
}

.defense-nav-link::after {
  background: var(--defense-red) !important;
  box-shadow: none !important;
}

.navbar.scrolled .defense-nav-link.active {
  color: var(--defense-red);
  background: var(--defense-red-soft);
}

.defense-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  color: var(--defense-white);
}

.defense-hero-bg,
.defense-hero-overlay {
  position: absolute;
  inset: 0;
}

.defense-hero-bg {
  background: url('images/defense/defense-hero-fighter-runway-2026.webp') center 50% / cover no-repeat;
  transform: scale(1.02);
}

@media (max-width: 768px) {
  .defense-hero-bg {
    background-position: 72% 50%;
  }
}

.defense-hero-overlay {
  background: linear-gradient(180deg, rgba(5, 12, 25, 0.12) 0%, rgba(5, 12, 25, 0.2) 52%, rgba(5, 12, 25, 0.82) 100%);
}

.defense-hero-content {
  position: relative;
  z-index: 2;
  width: min(100% - 2rem, 1320px);
  margin: 0 auto;
  padding: 12rem 0 11rem;
  text-align: center;
}

.defense-hero-kicker {
  margin: 0 0 1.25rem;
  font-size: clamp(0.72rem, 1.1vw, 1rem);
  font-weight: 600;
  letter-spacing: 0.24em;
  color: rgba(255, 255, 255, 0.78);
  overflow-wrap: anywhere;
}

.defense-hero h1 {
  max-width: 1050px;
  margin: 0 auto 1.5rem;
  font-size: clamp(3rem, 6vw, 5.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  text-shadow: 0 6px 28px rgba(0, 0, 0, 0.34);
  overflow-wrap: anywhere;
}

.defense-hero h1::after {
  content: '';
  display: block;
  width: 76px;
  height: 4px;
  margin: 1.3rem auto 0;
  border-radius: 999px;
  background: var(--defense-red);
  box-shadow: 0 0 22px rgba(239, 68, 87, 0.68);
}

.defense-hero-description {
  max-width: 820px;
  margin: 0 auto 2.5rem;
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.86);
}

.defense-hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.defense-btn {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 2rem;
  border: 1px solid transparent;
  border-radius: var(--defense-radius-sm);
  font-weight: 700;
  white-space: nowrap;
  transition: transform 220ms var(--defense-ease), background-color 220ms var(--defense-ease), box-shadow 220ms var(--defense-ease);
}

.defense-btn-primary {
  color: var(--defense-white);
  background: linear-gradient(135deg, var(--defense-red), #E13247);
  box-shadow: 0 12px 30px rgba(142, 14, 32, 0.3);
}

.defense-btn-secondary {
  color: var(--defense-white);
  border-color: rgba(255, 255, 255, 0.48);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
}

.defense-btn:hover {
  transform: translateY(-2px);
}

.defense-btn:active {
  transform: translateY(0);
}

.defense-btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.defense-btn-primary:hover {
  box-shadow: 0 18px 38px rgba(142, 14, 32, 0.38);
}

.defense-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
}

.defense-btn:focus-visible,
.capability-card:focus-visible {
  outline: 3px solid var(--defense-cyan);
  outline-offset: 3px;
}

.defense-hero-highlights {
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.7rem 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
}

.defense-hero-highlights > div {
  position: relative;
  display: grid;
  grid-template-columns: 10px 1fr;
  column-gap: 0.8rem;
  align-items: center;
  padding: 0 1.5rem;
}

.defense-hero-highlights > div + div {
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.highlight-mark {
  grid-row: 1 / span 2;
  width: 5px;
  height: 36px;
  border-radius: 99px;
  background: linear-gradient(180deg, var(--defense-red), var(--defense-cyan));
}

.defense-hero-highlights strong,
.defense-hero-highlights small {
  min-width: 0;
}

.defense-hero-highlights strong {
  font-size: 0.98rem;
  color: var(--defense-white);
}

.defense-hero-highlights small {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.64);
}

.defense-capabilities {
  background: var(--defense-paper);
}

.defense-section-header {
  margin-bottom: 3rem;
}

.defense-badge {
  color: var(--defense-red);
  background: var(--defense-red-soft);
}

.defense-section-header .decor-dots circle {
  fill: var(--defense-red);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: 1.5rem;
}

.defense-capabilities .section-title {
  min-width: 0;
  overflow-wrap: anywhere;
}

.capability-card {
  position: relative;
  min-width: 0;
  height: 100%;
  min-height: 440px;
  height: 100%;
  padding: 0;
  border: 1px solid var(--defense-rule);
  border-radius: var(--defense-radius-lg);
  background: var(--defense-navy);
  box-shadow: var(--hs-shadow-card);
  overflow: hidden;
}

.capability-card-image {
  display: flex;
  align-items: flex-end;
  color: var(--defense-white);
}

.capability-card-image img,
.capability-image-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.capability-card-image img {
  object-fit: cover;
}

.capability-card-primary img {
  object-position: 54% center;
}

.capability-card-secondary img {
  object-position: 46% center;
}

.capability-card-tertiary img {
  object-position: 48% center;
}

.capability-image-shade {
  background: linear-gradient(180deg, transparent 18%, color-mix(in oklch, var(--defense-navy) 90%, transparent) 100%);
}

.capability-card-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 2rem;
}

.capability-card-content > span,
.capability-index {
  color: var(--defense-red);
  font-size: 1rem;
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.capability-card h3 {
  margin: 1rem 0 0.8rem;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  color: var(--defense-ink);
}

.capability-card-image h3,
.capability-card-dark h3 {
  color: var(--defense-white);
}

.capability-card p {
  color: var(--defense-muted);
  line-height: 1.8;
}

.capability-card-image p,
.capability-card-dark p {
  color: rgba(255, 255, 255, 0.72);
}

.capability-card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.8rem;
  list-style: none;
}

.capability-card li {
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  color: var(--defense-red-dark);
  background: var(--defense-red-soft);
  border: 1px solid var(--defense-rule);
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.capability-card-dark {
  color: var(--defense-white);
  background: linear-gradient(145deg, var(--defense-navy-2), var(--defense-navy));
  border-color: rgba(255, 255, 255, 0.06);
}

.capability-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  margin-bottom: 3rem;
  border-radius: var(--defense-radius-sm);
  color: var(--defense-red);
  background: var(--defense-red-soft);
}

.capability-icon svg {
  width: 28px;
  height: 28px;
}

.capability-card-dark .capability-icon {
  color: var(--defense-cyan);
  background: rgba(0, 212, 255, 0.12);
}

.capability-rule {
  height: 1px;
  margin: 2rem 0 1rem;
  background: linear-gradient(90deg, var(--defense-red), rgba(255, 255, 255, 0.08));
}

.capability-card-dark small {
  color: rgba(255, 255, 255, 0.58);
}

.defense-audiences {
  color: var(--defense-white);
  background: var(--defense-navy);
}

.audience-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(280px, 0.82fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: end;
  margin-bottom: clamp(2.5rem, 4.5vw, 4rem);
}

.defense-audiences .defense-badge {
  color: var(--defense-cyan);
  background: color-mix(in oklch, var(--defense-cyan) 12%, transparent);
}

.audience-heading .section-title {
  max-width: 900px;
  margin: 0;
  color: var(--defense-white);
  overflow-wrap: anywhere;
}

.audience-heading > p {
  max-width: 540px;
  margin: 0 0 0.35rem;
  color: color-mix(in oklch, var(--defense-white) 68%, transparent);
  line-height: 1.85;
}

.audience-gallery {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: var(--defense-space-md);
  min-width: 0;
}

.audience-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid color-mix(in oklch, var(--defense-white) 13%, transparent);
  border-radius: var(--defense-radius-lg);
  background: var(--defense-navy-2);
  box-shadow: 0 18px 42px rgba(1, 8, 19, 0.18);
}

.audience-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 420ms var(--defense-ease);
}

.audience-card:hover img {
  transform: scale(1.022);
}

.audience-card-feature {
  min-height: 600px;
}

.audience-card-feature > img,
.audience-feature-shade {
  position: absolute;
  inset: 0;
}

.audience-card-feature > img {
  object-position: center 46%;
}

.audience-feature-shade {
  background: linear-gradient(180deg, rgba(5, 14, 29, 0.04) 22%, rgba(5, 14, 29, 0.3) 58%, rgba(5, 14, 29, 0.96) 100%);
}

.audience-feature-content {
  position: absolute;
  z-index: 1;
  right: clamp(1.5rem, 3.5vw, 2.75rem);
  bottom: clamp(1.5rem, 3.5vw, 2.75rem);
  left: clamp(1.5rem, 3.5vw, 2.75rem);
  max-width: 650px;
}

.audience-card-stack {
  display: grid;
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: var(--defense-space-md);
  min-width: 0;
}

.audience-card-compact {
  display: grid;
  grid-template-columns: minmax(0, 0.4fr) minmax(0, 0.6fr);
  min-height: 288px;
}

.audience-card-media {
  min-width: 0;
  overflow: hidden;
}

.audience-card-media img {
  object-position: center;
}

.audience-card-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: clamp(1.5rem, 2.5vw, 2.2rem);
}

.audience-type {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--defense-red);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.audience-card h3 {
  margin: 0;
  color: var(--defense-white);
  font-size: clamp(1.25rem, 1.8vw, 1.6rem);
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.audience-card-feature h3 {
  font-size: clamp(1.9rem, 3.1vw, 2.65rem);
}

.audience-card p {
  margin-top: 0.85rem;
  color: color-mix(in oklch, var(--defense-white) 72%, transparent);
  font-size: 0.94rem;
  line-height: 1.75;
}

.audience-card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.05rem 0 0;
  padding: 0;
  list-style: none;
}

.audience-card li {
  padding: 0.42rem 0.72rem;
  border: 1px solid color-mix(in oklch, var(--defense-red) 58%, transparent);
  border-radius: 999px;
  color: var(--defense-white);
  background: color-mix(in oklch, var(--defense-red) 10%, transparent);
  font-size: 0.78rem;
  font-weight: 650;
  white-space: nowrap;
}

.defense-topics {
  padding-bottom: clamp(4.5rem, 7vw, 6rem);
  color: var(--defense-ink);
  background: var(--defense-paper);
}

.topic-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: end;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.topic-heading .section-title {
  max-width: 900px;
  margin: 0;
  color: var(--defense-ink);
  overflow-wrap: anywhere;
}

.topic-heading > p {
  max-width: 520px;
  margin: 0 0 0.35rem;
  color: var(--defense-muted);
  line-height: 1.85;
}

.topic-explorer {
  display: grid;
  grid-template-columns: clamp(220px, 16vw, 248px) minmax(0, 1fr);
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--defense-rule);
  border-radius: var(--defense-radius-xl);
  background: var(--defense-white);
  box-shadow: var(--defense-topic-shadow);
}

.topic-tabs {
  display: flex;
  flex-direction: column;
  padding: clamp(1rem, 1.5vw, 1.25rem);
  color: var(--defense-white);
  background: var(--defense-navy);
}

.topic-tab {
  position: relative;
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: start;
  width: 100%;
  min-height: 104px;
  padding: 1.25rem 0.75rem;
  border: 0;
  border-bottom: 1px solid color-mix(in oklch, var(--defense-white) 12%, transparent);
  border-radius: var(--defense-radius-sm);
  color: color-mix(in oklch, var(--defense-white) 72%, transparent);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: transform 120ms var(--defense-ease), background-color 180ms var(--defense-ease), color 180ms var(--defense-ease);
}

.topic-tab:last-child {
  border-bottom-color: transparent;
}

.topic-tab-mark {
  width: 10px;
  height: 10px;
  margin-top: 0.35rem;
  border: 2px solid currentColor;
  border-radius: 50%;
}

.topic-tab strong,
.topic-tab small {
  display: block;
  min-width: 0;
}

.topic-tab strong {
  color: inherit;
  font-size: 1rem;
  line-height: 1.35;
  white-space: nowrap;
  overflow-wrap: anywhere;
}

.topic-tab small {
  margin-top: 0.5rem;
  color: color-mix(in oklch, currentColor 72%, transparent);
  font-size: 0.75rem;
  line-height: 1.55;
}

.topic-tab.is-active {
  color: var(--defense-white);
  background: color-mix(in oklch, var(--defense-white) 9%, transparent);
}

.topic-tab.is-active .topic-tab-mark {
  border-color: var(--defense-red);
  background: var(--defense-red);
  box-shadow: 0 0 0 4px color-mix(in oklch, var(--defense-red) 18%, transparent);
}

.topic-tab:active {
  transform: translateY(1px);
}

.topic-tab[aria-disabled="true"],
.topic-tab:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.topic-tab[data-state="loading"] {
  color: var(--defense-white);
  background: color-mix(in oklch, var(--defense-cyan) 10%, transparent);
  cursor: progress;
}

.topic-tab[data-state="error"] .topic-tab-mark {
  border-color: var(--defense-red);
  border-style: double;
}

.topic-tab[data-state="success"] .topic-tab-mark {
  border-color: var(--defense-cyan);
  background: var(--defense-cyan);
  border-radius: 3px;
}

.topic-tab:focus-visible {
  outline: 3px solid var(--defense-cyan);
  outline-offset: -3px;
}

.topic-stage {
  display: grid;
  min-width: 0;
  background: var(--defense-white);
}

.topic-panel {
  grid-area: 1 / 1;
  display: grid;
  grid-template-columns: minmax(420px, 0.56fr) minmax(0, 0.44fr);
  min-width: 0;
  min-height: 572px;
}

.topic-panel.is-active {
  animation: topic-panel-in 260ms var(--defense-ease) both;
}

.topic-panel[hidden] {
  display: none;
}

@media (min-width: 768px) {
  .topic-panel[hidden] {
    display: grid;
    visibility: hidden;
    pointer-events: none;
  }
}

.topic-media {
  position: relative;
  min-width: 0;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--defense-navy-2);
}

.topic-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 54%, color-mix(in oklch, var(--defense-navy) 82%, transparent) 100%);
  pointer-events: none;
}

.topic-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.topic-panel[data-topic-panel="education"] .topic-media img {
  object-position: 42% center;
}

.topic-panel[data-topic-panel="equipment"] .topic-media img {
  object-position: 48% center;
}

.topic-panel[data-topic-panel="practice"] .topic-media img {
  object-position: 50% center;
}

.topic-panel[data-topic-panel="cooperation"] .topic-media img {
  object-position: 52% center;
}

.topic-media figcaption {
  position: absolute;
  z-index: 1;
  right: 1.5rem;
  bottom: 1.35rem;
  left: 1.5rem;
  color: var(--defense-white);
  font-size: 0.82rem;
  font-weight: 700;
}

.topic-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: clamp(2rem, 3vw, 3rem);
}

.topic-current {
  align-self: flex-start;
  margin-bottom: 1.15rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  color: var(--defense-red-dark);
  background: var(--defense-red-soft);
  font-size: 0.78rem;
  font-weight: 800;
}

.topic-copy h3 {
  max-width: 620px;
  margin: 0 0 1.25rem;
  color: var(--defense-ink);
  font-size: clamp(1.75rem, 3vw, 2.65rem);
  line-height: 1.25;
  letter-spacing: -0.025em;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.topic-copy > p {
  max-width: 68ch;
  margin: 0 0 0.85rem;
  color: var(--defense-muted);
  font-size: 1rem;
  line-height: 1.82;
  text-wrap: pretty;
}

.topic-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 1.75rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--defense-rule);
}

.topic-points > div {
  min-width: 0;
  padding: 0 1rem;
  border-left: 1px solid var(--defense-rule);
}

.topic-points > div:first-child {
  padding-left: 0;
  border-left: 0;
}

.topic-points dt {
  color: var(--defense-red-dark);
  font-size: 0.82rem;
  font-weight: 800;
}

.topic-points dd {
  margin: 0.4rem 0 0;
  color: var(--defense-ink);
  font-size: 0.88rem;
  line-height: 1.55;
}

@keyframes topic-panel-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

@media (hover: hover) and (pointer: fine) {
  .topic-tab:hover {
    color: var(--defense-white);
    background: color-mix(in oklch, var(--defense-white) 6%, transparent);
  }
}

.defense-cooperation {
  padding-top: clamp(5.5rem, 8vw, 7.5rem);
  padding-bottom: clamp(6rem, 8.5vw, 8rem);
  background: var(--defense-cooperation-surface);
}

.defense-cooperation::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: min(calc(100% - 2rem), 1400px);
  height: 3px;
  background: linear-gradient(90deg, var(--defense-cooperation-rule) 0 82%, var(--defense-red) 82% 100%);
  transform: translateX(-50%);
}

.cooperation-panel {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--defense-cooperation-rule);
  border-radius: var(--defense-radius-xl);
  box-shadow: var(--defense-cooperation-shadow);
}

.cooperation-panel-bg,
.cooperation-panel-shade {
  position: absolute;
  inset: 0;
}

.cooperation-panel-bg {
  background: url('images/about-timeline/history-09-defense-skills.webp') center 38% / cover no-repeat;
}

.cooperation-panel-shade {
  background: linear-gradient(
    90deg,
    color-mix(in oklch, var(--defense-navy) 94%, transparent) 0%,
    color-mix(in oklch, var(--defense-navy) 82%, transparent) 34%,
    color-mix(in oklch, var(--defense-navy) 46%, transparent) 56%,
    color-mix(in oklch, var(--defense-navy) 12%, transparent) 76%,
    transparent 100%
  );
}

.cooperation-panel-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding: clamp(2rem, 5vw, 5rem);
  color: var(--defense-white);
}

.cooperation-label {
  display: inline-block;
  margin-bottom: 1rem;
  color: #FF9CAA;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.cooperation-panel h2 {
  margin: 0 0 1.2rem;
  font-size: clamp(2.25rem, 4.5vw, 4rem);
  line-height: 1.12;
  overflow-wrap: anywhere;
}

.cooperation-panel p {
  max-width: 680px;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: 1.05rem;
  line-height: 1.85;
}

.cooperation-panel .cooperation-principle {
  margin-bottom: 0.8rem;
  color: var(--defense-white);
  font-size: 1.12rem;
  font-weight: 700;
}

.footer-teachers p {
  margin-top: 0.4rem;
  color: #94A3B8;
  font-size: 0.8125rem;
}

.footer-teachers p:first-child {
  margin-top: 0.75rem;
  color: #64748B;
  font-size: 0.875rem;
}

@media (max-width: 1180px) {
  .nav-links {
    gap: 1.2rem;
  }

  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .capability-card-primary {
    grid-column: 1 / -1;
    min-height: 480px;
  }
}

@media (max-height: 820px) and (min-width: 768px) {
  .defense-hero-content {
    padding-top: 9rem;
    padding-bottom: 8.5rem;
  }

  .defense-hero h1 {
    font-size: clamp(3rem, 5.2vw, 4.3rem);
  }

  .defense-hero-description {
    margin-bottom: 1.5rem;
  }

  .defense-hero-highlights {
    padding-top: 1.1rem;
    padding-bottom: 1.1rem;
  }
}

@media (max-width: 900px) {
  .defense-hero-highlights {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 1rem;
  }

  .defense-hero-highlights > div:nth-child(3) {
    border-left: 0;
  }

  .audience-heading,
  .topic-heading {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.5rem;
  }

  .audience-heading > p {
    max-width: 680px;
  }

  .audience-gallery {
    grid-template-columns: minmax(0, 1fr);
  }

  .audience-card-feature {
    min-height: 520px;
  }

  .audience-card-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: auto;
  }

  .audience-card-compact {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: 200px auto;
  }

  .topic-explorer {
    grid-template-columns: minmax(0, 1fr);
  }

  .topic-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
  }

  .topic-tab {
    min-height: 104px;
    border: 1px solid color-mix(in oklch, var(--defense-white) 12%, transparent);
  }

  .topic-panel {
    grid-template-columns: minmax(280px, 0.48fr) minmax(0, 0.52fr);
    min-height: 620px;
  }

  .topic-copy {
    padding: 2.25rem;
  }

  .topic-points {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.85rem;
  }

  .topic-points > div,
  .topic-points > div:first-child {
    padding: 0;
    border-left: 0;
  }

}

@media (max-width: 767px) {
  .defense-topics {
    padding-bottom: 4rem;
  }

  .defense-cooperation {
    padding-top: 4.5rem;
    padding-bottom: 5rem;
  }

  .defense-hero-content {
    padding: 8.5rem 1rem 13rem;
  }

  .defense-hero h1 {
    font-size: clamp(2.5rem, 12vw, 3.5rem);
  }

  .defense-hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .defense-btn {
    width: 100%;
  }

  .defense-hero-highlights {
    padding: 1.2rem 1rem;
  }

  .defense-hero-highlights > div {
    padding: 0 0.75rem;
  }

  .defense-hero-highlights > div:nth-child(even) {
    border-left: 1px solid rgba(255, 255, 255, 0.14);
  }

  .defense-hero-highlights strong {
    font-size: 0.82rem;
  }

  .defense-hero-highlights small {
    display: none;
  }

  .highlight-mark {
    height: 24px;
  }

  .capability-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .capability-card-primary,
  .capability-card-image {
    grid-column: auto;
    min-height: 420px;
  }

  .audience-heading {
    gap: 1.25rem;
  }

  .audience-card-feature {
    min-height: 460px;
  }

  .audience-card-stack {
    grid-template-columns: minmax(0, 1fr);
  }

  .audience-card-compact {
    grid-template-rows: 210px auto;
  }

  .audience-card-copy {
    padding: 1.5rem;
  }

  .topic-heading {
    gap: 1.25rem;
  }

  .topic-tabs {
    grid-template-columns: minmax(0, 1fr);
    padding: 1rem;
  }

  .topic-tab {
    min-height: 88px;
    padding: 1rem;
  }

  .topic-panel {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
  }

  .topic-media {
    min-height: 280px;
    aspect-ratio: 4 / 3;
  }

  .topic-copy {
    padding: 1.6rem;
  }

  .topic-copy h3 {
    font-size: clamp(1.6rem, 8vw, 2.1rem);
  }

  .cooperation-panel {
    min-height: 580px;
    align-items: flex-end;
  }

  .cooperation-panel-shade {
    background: linear-gradient(180deg, rgba(6, 17, 33, 0.28) 0%, rgba(6, 17, 33, 0.96) 64%);
  }
}

@media (max-width: 420px) {
  .defense-hero-highlights {
    grid-template-columns: minmax(0, 1fr);
  }

  .defense-hero-highlights > div,
  .defense-hero-highlights > div:nth-child(even) {
    border-left: 0;
  }

  .defense-hero-highlights > div:nth-child(n+3) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .topic-panel.is-active {
    animation: none;
  }
}