/* ============================================================
   subseasentry.ai – global stylesheet
   ============================================================ */

/* ---------- Reset & base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg:          #040d1a;
  --color-bg-card:     #071428;
  --color-bg-section:  #060f20;
  --color-border:      rgba(0, 180, 255, 0.15);
  --color-primary:     #00b4ff;
  --color-primary-dim: rgba(0, 180, 255, 0.12);
  --color-accent:      #00e5ff;
  --color-text:        #c8d8ec;
  --color-text-muted:  #6a8aaa;
  --color-white:       #ffffff;
  --color-warning:     #ff6b35;

  --font-sans: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;

  --shadow-glow: 0 0 40px rgba(0, 180, 255, 0.2);
  --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.6);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--color-accent);
}

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 640px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.25s;
  border: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #000;
}

.btn-primary:hover {
  background: var(--color-accent);
  box-shadow: 0 0 24px rgba(0, 180, 255, 0.5);
  color: #000;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-dim);
  box-shadow: 0 0 18px rgba(0, 180, 255, 0.25);
  color: var(--color-accent);
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(4, 13, 26, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo-icon {
  width: 34px;
  height: 34px;
}

.nav-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.nav-logo-text span {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-white);
}

.nav-cta {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary) !important;
  border: 1.5px solid var(--color-primary);
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  transition: background 0.2s, color 0.2s !important;
}

.nav-cta:hover {
  background: var(--color-primary-dim) !important;
  color: var(--color-accent) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 30px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* animated ocean grid */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0, 90, 180, 0.22) 0%, transparent 70%),
    radial-gradient(ellipse 50% 80% at 80% 20%, rgba(0, 180, 255, 0.08) 0%, transparent 60%),
    linear-gradient(180deg, #040d1a 0%, #05152e 50%, #040d1a 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 180, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 180, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 80%);
}

.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0;
  animation: float-particle linear infinite;
}

@keyframes float-particle {
  0%   { transform: translateY(100vh) translateX(0); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.4; }
  100% { transform: translateY(-10vh) translateX(20px); opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 80px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 180, 255, 0.1);
  border: 1px solid rgba(0, 180, 255, 0.3);
  border-radius: 100px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-white);
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  max-width: 520px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 56px;
}

.hero-stat {
  padding: 20px 16px;
  background: rgba(7, 20, 40, 0.8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.hero-stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.04em;
}

.hero-stat-value span {
  color: var(--color-primary);
}

.hero-stat-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* maritime intelligence display */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.intel-display {
  position: relative;
  width: 100%;
  max-width: 500px;
  aspect-ratio: 1.24;
  border: 1px solid rgba(0, 180, 255, 0.2);
  border-radius: 18px;
  background:
    radial-gradient(ellipse at 66% 42%, rgba(0, 180, 255, 0.16) 0%, transparent 38%),
    radial-gradient(ellipse at 28% 76%, rgba(255, 107, 53, 0.08) 0%, transparent 28%),
    linear-gradient(145deg, rgba(7, 20, 40, 0.92), rgba(3, 12, 26, 0.96));
  box-shadow:
    0 0 44px rgba(0, 180, 255, 0.16),
    inset 0 0 42px rgba(0, 180, 255, 0.06);
  overflow: hidden;
}

.intel-display::before,
.intel-display::after {
  content: '';
  position: absolute;
  pointer-events: none;
}

.intel-display::before {
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0%, rgba(0, 229, 255, 0.06) 48%, rgba(0, 229, 255, 0.15) 50%, rgba(0, 229, 255, 0.06) 52%, transparent 100%),
    linear-gradient(180deg, rgba(255,255,255,0.08), transparent 18%, transparent 82%, rgba(255,255,255,0.05));
  opacity: 0.7;
  animation: intel-sweep 8s ease-in-out infinite;
}

.intel-display::after {
  inset: 10px;
  border: 1px solid rgba(0, 180, 255, 0.11);
  border-radius: 12px;
  box-shadow: inset 0 0 18px rgba(0, 180, 255, 0.05);
}

.intel-scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    180deg,
    rgba(200, 216, 236, 0.035) 0,
    rgba(200, 216, 236, 0.035) 1px,
    transparent 1px,
    transparent 7px
  );
  mix-blend-mode: screen;
  opacity: 0.18;
  animation: scanline-drift 14s linear infinite;
  pointer-events: none;
  z-index: 3;
}

.intel-sonar {
  position: absolute;
  left: 58%;
  top: 43%;
  aspect-ratio: 1;
  border: 1px solid rgba(0, 229, 255, 0.28);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: sonar-pulse 5.5s ease-out infinite;
  pointer-events: none;
}

.intel-sonar-1 {
  width: 22%;
  animation-delay: 0s;
}

.intel-sonar-2 {
  width: 38%;
  animation-delay: 1.3s;
}

.intel-sonar-3 {
  width: 55%;
  animation-delay: 2.6s;
}

.intel-map {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 0 18px rgba(0, 180, 255, 0.16));
}

.intel-grid-lines {
  animation: grid-breathe 6s ease-in-out infinite;
}

.intel-contours {
  animation: contour-drift 18s ease-in-out infinite;
}

.intel-cable {
  stroke-dashoffset: 0;
}

.intel-cable-1 {
  animation: cable-glow 5s ease-in-out infinite;
}

.intel-cable-2 {
  animation: route-flow 18s linear infinite;
}

.intel-cable-3 {
  animation: route-flow 22s linear infinite reverse;
}

.intel-node {
  fill: var(--color-accent);
  stroke: rgba(255, 255, 255, 0.72);
  stroke-width: 0.8;
  filter: drop-shadow(0 0 7px rgba(0, 229, 255, 0.75));
  transform-box: fill-box;
  transform-origin: center;
  animation: node-pulse 4.2s ease-in-out infinite;
}

.intel-node:nth-child(2) { animation-delay: 0.5s; }
.intel-node:nth-child(3) { animation-delay: 1s; }
.intel-node:nth-child(4) { animation-delay: 1.5s; }
.intel-node:nth-child(5) { animation-delay: 2s; }
.intel-node:nth-child(6) { animation-delay: 2.5s; }
.intel-node:nth-child(7) { animation-delay: 3s; }

.intel-node-warn {
  fill: var(--color-warning);
  filter: drop-shadow(0 0 8px rgba(255, 107, 53, 0.6));
}

.intel-acoustic {
  animation: acoustic-fade 4.8s ease-in-out infinite;
}

.intel-labels text {
  fill: rgba(200, 216, 236, 0.58);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.13em;
}

@keyframes intel-sweep {
  0%, 100% { transform: translateX(-55%); opacity: 0; }
  18%, 72% { opacity: 0.72; }
  50% { transform: translateX(55%); opacity: 0.42; }
}

@keyframes scanline-drift {
  from { background-position: 0 0; }
  to   { background-position: 0 80px; }
}

@keyframes sonar-pulse {
  0%   { opacity: 0; transform: translate(-50%, -50%) scale(0.72); }
  24%  { opacity: 0.34; }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.35); }
}

@keyframes grid-breathe {
  0%, 100% { opacity: 0.14; }
  50%      { opacity: 0.24; }
}

@keyframes contour-drift {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50%      { transform: translate3d(8px, -5px, 0); }
}

@keyframes cable-glow {
  0%, 100% { opacity: 0.72; }
  50%      { opacity: 1; }
}

@keyframes route-flow {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -80; }
}

@keyframes node-pulse {
  0%, 100% { opacity: 0.72; transform: scale(1); }
  50%      { opacity: 1; transform: scale(1.32); }
}

@keyframes acoustic-fade {
  0%, 100% { opacity: 0.34; }
  50%      { opacity: 0.78; }
}

@media (prefers-reduced-motion: reduce) {
  .intel-display::before,
  .intel-scanlines,
  .intel-sonar,
  .intel-grid-lines,
  .intel-contours,
  .intel-cable,
  .intel-node,
  .intel-acoustic {
    animation: none;
  }
}

/* ---------- Threat Banner ---------- */
.threat-banner {
  margin-top: 68px;
  background:
    linear-gradient(90deg, rgba(0, 116, 174, 0.28) 0%, rgba(0, 180, 255, 0.16) 48%, rgba(0, 116, 174, 0.2) 100%);
  border-top: 1px solid rgba(0, 180, 255, 0.34);
  border-bottom: 1px solid rgba(0, 180, 255, 0.28);
  box-shadow: inset 0 0 20px rgba(0, 94, 150, 0.28);
  padding: 12px 0;
  overflow: hidden;
}

.threat-ticker {
  display: flex;
  width: max-content;
  animation: ticker-scroll 42s linear infinite;
  white-space: nowrap;
  will-change: transform;
}

.threat-track {
  display: flex;
  align-items: center;
  gap: 64px;
  padding-right: 64px;
  flex-shrink: 0;
}

@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.threat-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #a8dcff;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  flex-shrink: 0;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.threat-item:hover {
  color: #dff5ff;
  border-bottom-color: rgba(101, 211, 255, 0.55);
}

.threat-banner:hover .threat-ticker {
  animation-play-state: paused;
}

.threat-dot {
  width: 5px;
  height: 5px;
  background: #65d3ff;
  box-shadow: 0 0 8px rgba(101, 211, 255, 0.8);
  border-radius: 50%;
}

/* ---------- Sections ---------- */
section {
  padding: 100px 0;
}

section:nth-child(even) {
  background: var(--color-bg-section);
}

.section-head {
  margin-bottom: 60px;
}

/* ---------- Mission ---------- */
.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.mission-text p {
  color: var(--color-text-muted);
  margin-bottom: 18px;
  font-size: 1rem;
  line-height: 1.8;
}

.mission-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 36px;
}

.pillar {
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.3s;
}

.pillar:hover {
  border-color: var(--color-primary);
}

.pillar-icon {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.pillar-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 6px;
}

.pillar-desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.infrastructure-map {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  overflow: hidden;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.infrastructure-map::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 60%, rgba(0, 40, 100, 0.5) 0%, transparent 70%);
}

.map-svg {
  width: 100%;
  position: relative;
  z-index: 1;
}

/* ---------- Technology ---------- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tech-card {
  padding: 32px 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.tech-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.tech-card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-dim);
  border: 1px solid rgba(0, 180, 255, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.tech-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 10px;
}

.tech-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ---------- Assets ---------- */
.assets-section {
  background: var(--color-bg-section);
}

.assets-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.asset-card {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.3s;
}

.asset-card:hover {
  border-color: var(--color-primary);
}

.asset-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  background: var(--color-primary-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.asset-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.asset-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.asset-tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-warning);
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.25);
  padding: 3px 10px;
  border-radius: 100px;
}

/* ---------- Approach ---------- */
.approach-timeline {
  position: relative;
  padding-left: 40px;
  max-width: 720px;
  margin: 0 auto;
}

.approach-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary) 0%, transparent 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 6px;
  width: 16px;
  height: 16px;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
}

.timeline-dot::after {
  content: '';
  position: absolute;
  inset: 3px;
  background: var(--color-primary);
  border-radius: 50%;
}

.timeline-phase {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ---------- Articles ---------- */
.articles-section {
  background:
    radial-gradient(ellipse 70% 40% at 50% 0%, rgba(0, 180, 255, 0.08) 0%, transparent 70%),
    var(--color-bg-section);
}

.article-page-section {
  padding-top: 148px;
}

.article-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.article-teaser {
  display: block;
  padding: 32px;
  background:
    linear-gradient(180deg, rgba(7, 20, 40, 0.95), rgba(5, 15, 32, 0.96));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.article-teaser:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.article-teaser h3 {
  color: var(--color-white);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.25;
  margin-bottom: 12px;
}

.article-teaser p {
  max-width: 720px;
  color: var(--color-text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 18px;
}

.article-read-link,
.article-back-link {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-read-link::after {
  content: '→';
  margin-left: 8px;
}

.article-back-link {
  margin-bottom: 18px;
}

.article-back-link::before {
  content: '←';
  margin-right: 8px;
}

.article-card {
  max-width: 880px;
  margin: 0 auto;
  padding: 44px;
  background:
    linear-gradient(180deg, rgba(7, 20, 40, 0.95), rgba(5, 15, 32, 0.96));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.article-header {
  padding-bottom: 28px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.article-meta {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.article-header h3 {
  color: var(--color-white);
  font-size: clamp(1.75rem, 4vw, 2.55rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.article-content {
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.85;
}

.article-content p {
  margin-bottom: 18px;
}

.article-content h4 {
  display: block;
  position: relative;
  color: var(--color-white);
  font-size: 1.28rem;
  line-height: 1.3;
  margin: 44px 0 16px;
  padding-top: 26px;
  border-top: 1px solid rgba(0, 180, 255, 0.12);
}

.article-content h4::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 80px;
  height: 1px;
  background: var(--color-primary);
  box-shadow: 0 0 14px rgba(0, 180, 255, 0.45);
}

.article-content ul {
  margin: 0 0 22px 1.2rem;
  padding-left: 1.1rem;
  color: var(--color-text-muted);
  list-style-type: disc;
  list-style-position: outside;
}

.article-content li {
  display: list-item;
  padding-left: 0.35rem;
  margin-bottom: 8px;
}

.article-content li::marker {
  color: var(--color-primary);
}

.article-content p + ul {
  margin-top: -6px;
}

/* Support inline paragraph lead-ins as standalone subheaders. */
.article-content p > strong:first-child,
.article-content p > b:first-child {
  display: block;
  margin-bottom: 8px;
  color: var(--color-white);
  font-size: 1.03rem;
  line-height: 1.4;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info p {
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s;
}

.contact-channel:hover {
  border-color: var(--color-primary);
}

.channel-icon {
  font-size: 1.3rem;
}

.channel-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.channel-value {
  font-size: 0.92rem;
  color: var(--color-white);
  font-weight: 600;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--color-white);
  font-size: 0.92rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 180, 255, 0.1);
}

.form-group select {
  appearance: none;
  cursor: pointer;
}

.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

/* ---------- Footer ---------- */
.footer {
  background: #020810;
  border-top: 1px solid var(--color-border);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 14px;
  max-width: 300px;
  line-height: 1.65;
}

.footer-col h4 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 18px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.footer-bottom-links a:hover {
  color: var(--color-white);
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

  .hero-description,
  .section-subtitle {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-visual {
    order: -1;
  }

  .intel-display {
    max-width: 430px;
    margin: 0 auto;
  }

  .mission-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 680px) {
  section {
    padding: 64px 0;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(4, 13, 26, 0.97);
    flex-direction: column;
    align-items: center;
    padding: 24px 0;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.open {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .tech-grid,
  .assets-grid {
    grid-template-columns: 1fr;
  }

  .article-card,
  .article-teaser {
    padding: 28px 22px;
  }

  .mission-pillars {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}