:root {
  color-scheme: dark;
  --bg: #050b12;
  --bg-soft: #081321;
  --panel: rgba(10, 24, 40, 0.82);
  --panel-strong: #0c1b2d;
  --line: rgba(129, 210, 255, 0.18);
  --line-strong: rgba(129, 210, 255, 0.42);
  --text: #eef7ff;
  --text-soft: #afc2d4;
  --text-muted: #7f96aa;
  --accent: #65d6ff;
  --accent-strong: #a7ebff;
  --accent-dark: #0d6f95;
  --success: #66e1b2;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius-sm: 0.75rem;
  --radius-md: 1.25rem;
  --radius-lg: 1.75rem;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 15% 5%, rgba(29, 112, 158, 0.18), transparent 32rem),
    radial-gradient(circle at 92% 18%, rgba(44, 112, 170, 0.12), transparent 28rem),
    linear-gradient(180deg, #07111f 0%, var(--bg) 42rem, #04080d 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(101, 214, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(101, 214, 255, 0.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

::selection {
  background: rgba(101, 214, 255, 0.26);
  color: #fff;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: -0.025em;
}

h1 {
  max-width: 900px;
  margin-bottom: 1.4rem;
  font-size: clamp(3rem, 7vw, 6.2rem);
}

h1 span,
h2 span {
  color: var(--accent);
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.25rem);
}

h3 {
  margin-bottom: 0.8rem;
  font-size: 1.4rem;
}

p {
  color: var(--text-soft);
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  transform: translateY(-180%);
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #03101a;
  font-weight: 800;
  text-decoration: none;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem max(1.25rem, calc((100vw - var(--max-width)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(5, 11, 18, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.8rem;
  height: 2.8rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(101, 214, 255, 0.28), rgba(8, 21, 35, 0.8));
  box-shadow: inset 0 0 20px rgba(101, 214, 255, 0.12), 0 0 22px rgba(101, 214, 255, 0.08);
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 0.92rem;
  letter-spacing: 0.14em;
}

.brand small {
  color: var(--text-muted);
  font-size: 0.74rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.site-nav a {
  position: relative;
  color: var(--text-soft);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -0.45rem;
  left: 0;
  height: 1px;
  transform: scaleX(0);
  background: var(--accent);
  transition: transform 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active {
  color: var(--text);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.active::after {
  transform: scaleX(1);
}

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

.section-block {
  padding-block: clamp(4.5rem, 8vw, 8rem);
}

.section-muted {
  border-block: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 27, 45, 0.72), rgba(5, 11, 18, 0.3));
}

.hero {
  display: grid;
  min-height: calc(100vh - 5rem);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
  padding-block: clamp(5rem, 10vw, 9rem);
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.75fr);
}

.hero-copy {
  max-width: 790px;
}

.eyebrow {
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-lead {
  max-width: 760px;
  margin-bottom: 2rem;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.2rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #03101a;
  box-shadow: 0 14px 35px rgba(42, 177, 222, 0.2);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-strong);
}

.button-secondary {
  background: rgba(8, 21, 35, 0.65);
  color: var(--text);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--accent);
  background: rgba(16, 44, 70, 0.8);
}

.hero-panel,
.card,
.contact-panel,
.ctf-panel {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(13, 31, 51, 0.86), rgba(5, 13, 22, 0.92));
  box-shadow: var(--shadow);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 1.4rem;
  border-radius: var(--radius-lg);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(101, 214, 255, 0.12), transparent 38%);
}

.status-line {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
  color: var(--text-soft);
  font-size: 0.82rem;
  font-weight: 700;
}

.status-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 18px rgba(102, 225, 178, 0.7);
}

.signal-grid {
  display: grid;
  gap: 0.75rem;
  margin: 0;
}

.signal-grid div {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(6, 17, 28, 0.6);
}

.signal-grid dt {
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-grid dd {
  margin: 0.35rem 0 0;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.2rem;
}

.section-heading > p:last-child {
  max-width: 680px;
}

.card-grid {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  transition: transform 180ms ease, border-color 180ms ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card h3 {
  font-size: 1.5rem;
}

.card p {
  min-height: 5.4rem;
}

.text-link {
  display: inline-flex;
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--accent-strong);
}

.text-muted {
  color: var(--text-muted);
}

.split-layout {
  display: grid;
  gap: clamp(2rem, 7vw, 7rem);
  grid-template-columns: 0.9fr 1.1fr;
}

.prose {
  max-width: 740px;
}

.prose p {
  font-size: 1.05rem;
}

.principles {
  display: grid;
  gap: 0.7rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.principles li {
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--accent);
  background: rgba(10, 27, 44, 0.6);
  color: var(--text-soft);
}

.contact-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-block: clamp(4rem, 8vw, 8rem);
  padding: clamp(1.6rem, 4vw, 3rem);
  border-radius: var(--radius-lg);
}

.contact-panel p {
  max-width: 680px;
  margin-bottom: 0;
}

.page-hero {
  padding-top: clamp(6rem, 10vw, 9rem);
  padding-bottom: clamp(3.5rem, 6vw, 6rem);
}

.page-hero h1 {
  max-width: 900px;
  font-size: clamp(2.7rem, 6vw, 5.3rem);
}

.page-hero > p:last-child {
  max-width: 760px;
  font-size: 1.12rem;
}

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

.project-card p {
  min-height: auto;
}

.project-note {
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.35rem 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 0.32rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7, 19, 31, 0.7);
  color: var(--accent-strong);
  font-size: 0.74rem;
  font-weight: 750;
}

.case-list {
  display: grid;
  gap: 1rem;
}

.case-study {
  display: grid;
  gap: 1.4rem;
  padding: clamp(1.3rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(6, 17, 28, 0.62);
  grid-template-columns: auto 1fr;
}

.case-index {
  color: var(--accent);
  font-size: 1.6rem;
  font-weight: 900;
  opacity: 0.7;
}

.case-study p {
  max-width: 900px;
}

.ctf-panel {
  display: grid;
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--radius-lg);
  grid-template-columns: 1.15fr 0.85fr;
}

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

.stats-grid div {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(6, 17, 28, 0.65);
}

.stats-grid dt {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stats-grid dd {
  margin: 0.25rem 0 0;
  color: var(--accent-strong);
  font-size: 1.5rem;
  font-weight: 900;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem max(1.25rem, calc((100vw - var(--max-width)) / 2));
  border-top: 1px solid var(--line);
  background: rgba(3, 8, 13, 0.85);
}

.site-footer p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.site-footer a {
  color: var(--text-soft);
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

@media (max-width: 900px) {
  .hero,
  .split-layout,
  .ctf-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

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

  .contact-panel {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 0.6rem;
  }

  .site-nav a {
    font-size: 0.82rem;
  }

  .section-shell {
    width: min(var(--max-width), calc(100% - 1.5rem));
  }

  .hero {
    padding-top: 4rem;
  }

  .card-grid,
  .project-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .card p {
    min-height: auto;
  }

  .case-study {
    grid-template-columns: 1fr;
  }

  .case-index {
    font-size: 1rem;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}