:root {
  --bg: #07131d;
  --bg-soft: #0d1f2e;
  --panel: rgba(11, 27, 39, 0.82);
  --panel-strong: #0f2332;
  --panel-alt: #112c3d;
  --text: #edf5fb;
  --muted: #96adc0;
  --line: rgba(159, 193, 216, 0.18);
  --line-strong: rgba(159, 193, 216, 0.35);
  --accent: #78d5ff;
  --accent-strong: #2aa8e4;
  --accent-soft: rgba(120, 213, 255, 0.12);
  --warn: #ffbb77;
  --f3: #d6e85c;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.24);
  --radius: 22px;
  --radius-sm: 14px;
  --content-width: min(1240px, calc(100vw - 2rem));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, rgba(39, 118, 163, 0.24), transparent 32%),
    radial-gradient(circle at 100% 12%, rgba(34, 74, 130, 0.18), transparent 28%),
    linear-gradient(180deg, #08131c 0%, #07101a 46%, #091725 100%);
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

.site-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.024) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, transparent, black 20%, black 80%, transparent);
}

.layout {
  position: relative;
  z-index: 1;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: rgba(6, 18, 28, 0.74);
  border-bottom: 1px solid rgba(151, 188, 212, 0.12);
}

.topbar-inner,
.hero-inner,
.section-inner,
.footer-inner {
  width: var(--content-width);
  margin: 0 auto;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 78px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.95rem;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 15px;
  background:
    linear-gradient(135deg, rgba(120, 213, 255, 0.18), rgba(214, 232, 92, 0.24)),
    rgba(15, 35, 50, 0.86);
  border: 1px solid rgba(120, 213, 255, 0.26);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.95rem;
  color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.brand-copy {
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.brand-title {
  margin: 0.15rem 0 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-subtitle {
  margin: 0.1rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0.7rem 0.9rem;
  border-radius: 999px;
  color: var(--muted);
  transition:
    color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text);
  background: rgba(120, 213, 255, 0.08);
}

.nav-link.active {
  color: var(--text);
  background: rgba(120, 213, 255, 0.14);
  box-shadow: inset 0 0 0 1px rgba(120, 213, 255, 0.18);
}

.main {
  padding-bottom: 4rem;
}

.hero {
  position: relative;
  padding: 4rem 0 2.2rem;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 78%;
  background:
    linear-gradient(180deg, rgba(120, 213, 255, 0.07), transparent 70%),
    linear-gradient(90deg, rgba(214, 232, 92, 0.04), rgba(120, 213, 255, 0.02));
  pointer-events: none;
}

.hero-grid,
.article-grid,
.split-grid {
  display: grid;
  gap: 1.2rem;
}

.hero-grid {
  grid-template-columns: 1.6fr 1fr;
  align-items: start;
}

.hero-panel,
.panel,
.card,
.stat,
.matrix-column,
.search-panel,
.timeline-item,
.section-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 1.5rem;
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -8% -18% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(120, 213, 255, 0.22), transparent 72%);
  pointer-events: none;
}

.hero-title,
.page-title,
.section-title,
.card-title,
.matrix-title {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: -0.03em;
}

.hero-title {
  margin: 0.7rem 0 1rem;
  max-width: 15ch;
  font-size: clamp(2.5rem, 4vw, 4.6rem);
  line-height: 0.94;
}

.hero-text {
  max-width: 66ch;
  color: #d3e0ea;
  font-size: 1.04rem;
  line-height: 1.72;
}

.hero-text p,
.prose p,
.detail-copy p {
  margin: 0 0 1rem;
}

.cta-row,
.filter-row,
.meta-row,
.chip-row,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button,
.chip-link,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.button {
  background: linear-gradient(135deg, var(--accent), #94e1ff);
  color: #082031;
  font-weight: 700;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.ghost-button,
.chip-link {
  background: rgba(120, 213, 255, 0.07);
  border-color: rgba(120, 213, 255, 0.15);
  color: var(--text);
}

.ghost-button:hover,
.chip-link:hover,
.ghost-button:focus-visible,
.chip-link:focus-visible {
  background: rgba(120, 213, 255, 0.12);
  border-color: rgba(120, 213, 255, 0.3);
}

.hero-side {
  display: grid;
  gap: 1rem;
}

.stat-grid,
.card-grid,
.resource-grid,
.detail-grid,
.tactic-grid,
.technique-grid {
  display: grid;
  gap: 1rem;
}

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

.stat {
  padding: 1.1rem 1.15rem;
}

.stat-label {
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stat-value {
  margin-top: 0.55rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 2rem;
  line-height: 1;
}

.stat-subtext {
  margin-top: 0.55rem;
  color: #c2d3e2;
  font-size: 0.96rem;
  line-height: 1.4;
}

.section {
  padding-top: 1.2rem;
}

.section-inner {
  display: grid;
  gap: 1rem;
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
}

.section-title {
  margin: 0.2rem 0 0;
  font-size: clamp(1.75rem, 2vw, 2.5rem);
}

.section-lead {
  margin: 0.5rem 0 0;
  max-width: 68ch;
  color: var(--muted);
  line-height: 1.7;
}

.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.panel,
.section-card {
  padding: 1.25rem;
}

.card-title {
  margin: 0.7rem 0 0.65rem;
  font-size: 1.25rem;
}

.card-copy,
.muted,
.meta-item {
  color: var(--muted);
  line-height: 1.65;
}

.card-copy {
  margin: 0;
}

.tag,
.source-tag,
.count-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 28px;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.tag {
  background: rgba(214, 232, 92, 0.1);
  color: #def169;
}

.source-tag.attack {
  background: rgba(120, 213, 255, 0.14);
  color: var(--accent);
}

.source-tag.f3 {
  background: rgba(214, 232, 92, 0.14);
  color: var(--f3);
}

.count-tag {
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
}

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

.page-shell {
  padding-top: 2.4rem;
}

.page-head {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  align-items: start;
}

.page-title {
  margin: 0.55rem 0 0;
  font-size: clamp(2rem, 3vw, 3.4rem);
}

.page-subtitle {
  margin: 0.75rem 0 0;
  max-width: 70ch;
  color: #d3e0ea;
  line-height: 1.75;
}

.page-subtitle p {
  margin: 0 0 1rem;
}

.page-meta {
  display: grid;
  gap: 0.75rem;
}

.meta-item {
  display: grid;
  gap: 0.15rem;
}

.meta-label {
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.77rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.meta-value {
  color: var(--text);
}

.page-content {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) 300px;
  margin-top: 1.25rem;
}

.prose {
  line-height: 1.75;
  color: #d7e6f1;
}

.prose h3,
.sidebar-title,
.detail-title {
  margin: 0 0 0.8rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.12rem;
}

.sidebar,
.search-panel {
  position: sticky;
  top: 102px;
}

.list {
  display: grid;
  gap: 0.75rem;
}

.list-item,
.technique-card,
.tactic-card,
.matrix-card,
.relation-card {
  padding: 1rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

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

.technique-head,
.list-head,
.matrix-card-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: space-between;
  align-items: start;
}

.detail-copy {
  margin-top: 1rem;
  color: #d8e5ee;
  line-height: 1.7;
}

.english-copy {
  margin-top: 0.85rem;
  color: #a9bfce;
  font-size: 0.95rem;
  line-height: 1.6;
}

.small-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.filter-row {
  align-items: stretch;
}

.input,
.select {
  width: 100%;
  min-height: 48px;
  padding: 0.8rem 1rem;
  border-radius: 14px;
  border: 1px solid rgba(151, 188, 212, 0.14);
  background: rgba(6, 18, 28, 0.72);
  color: var(--text);
  outline: none;
}

.input:focus,
.select:focus {
  border-color: rgba(120, 213, 255, 0.38);
  box-shadow: 0 0 0 3px rgba(120, 213, 255, 0.12);
}

.matrix-shell {
  display: grid;
  gap: 1rem;
}

.matrix-scroll {
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(260px, 1fr));
  gap: 0.9rem;
  min-width: 1850px;
}

.matrix-column {
  padding: 1rem;
  background:
    linear-gradient(180deg, rgba(120, 213, 255, 0.04), transparent 22%),
    rgba(11, 27, 39, 0.84);
}

.matrix-title {
  margin: 0.6rem 0 0;
  font-size: 1.05rem;
}

.matrix-description {
  margin: 0.65rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.matrix-stack {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.matrix-card {
  padding: 0.9rem;
}

.matrix-card p,
.matrix-card details {
  margin: 0.7rem 0 0;
}

.matrix-card details {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 0.7rem;
}

.matrix-card summary {
  cursor: pointer;
  color: var(--accent);
}

.matrix-card ul,
.prose ul,
.sidebar ul {
  padding-left: 1rem;
}

.timeline {
  display: grid;
  gap: 0.9rem;
}

.timeline-item {
  padding: 1rem 1.1rem;
}

.footer {
  border-top: 1px solid rgba(151, 188, 212, 0.12);
  background: rgba(6, 18, 28, 0.6);
}

.footer-inner {
  display: grid;
  gap: 1rem;
  padding: 1.4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 1rem;
}

.footer-note {
  color: var(--muted);
  line-height: 1.7;
}

.footer-links {
  display: grid;
  gap: 0.55rem;
}

.empty-state {
  padding: 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(151, 188, 212, 0.2);
  color: var(--muted);
}

.animate-in {
  animation: rise 420ms ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .page-head,
  .page-content,
  .footer-grid,
  .card-grid,
  .resource-grid,
  .detail-grid,
  .tactic-grid,
  .technique-grid {
    grid-template-columns: 1fr;
  }

  .sidebar,
  .search-panel {
    position: static;
  }

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

@media (max-width: 860px) {
  .topbar-inner {
    flex-direction: column;
    align-items: stretch;
    padding: 0.9rem 0;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 2.2rem;
  }

  .hero-title {
    max-width: 100%;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .topbar-inner,
  .hero-inner,
  .section-inner,
  .footer-inner {
    width: min(100vw - 1rem, 1240px);
  }

  .hero-panel,
  .panel,
  .card,
  .section-card,
  .matrix-column {
    padding: 1rem;
  }

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

  .brand-title {
    white-space: normal;
  }
}