:root {
  --font-body: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --bg: #07111f;
  --bg-soft: #0b1627;
  --surface: rgba(11, 22, 39, 0.78);
  --surface-strong: rgba(12, 28, 46, 0.96);
  --ink: #e8f3ff;
  --muted: #97aeca;
  --line: rgba(110, 173, 255, 0.16);
  --accent: #36d0ff;
  --accent-deep: #14a0ff;
  --accent-soft: rgba(54, 208, 255, 0.12);
  --highlight: #8fffe0;
  --shadow: 0 24px 70px rgba(2, 8, 18, 0.42);
  --radius: 22px;
  --container-width: 1120px;
  --transition: 180ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.7;
  background:
    radial-gradient(circle at top left, rgba(20, 160, 255, 0.18), transparent 24%),
    radial-gradient(circle at 88% 12%, rgba(143, 255, 224, 0.12), transparent 20%),
    linear-gradient(180deg, #07111f 0%, #091728 45%, #08131f 100%);
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(143, 255, 224, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(54, 208, 255, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 90%);
}

a {
  color: var(--accent-deep);
  text-decoration: none;
}

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

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

.container {
  width: min(100%, var(--container-width));
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: rgba(7, 17, 31, 0.82);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 78px;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--ink);
}

.site-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--highlight));
  color: #03101d;
  font: 600 0.82rem var(--font-mono);
  letter-spacing: 0.08em;
  box-shadow: 0 0 24px rgba(54, 208, 255, 0.24);
}

.site-logo-text {
  font-weight: 700;
  letter-spacing: -0.03em;
}

.site-nav {
  display: flex;
  gap: 1.1rem;
  margin-left: auto;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0.4rem 0.55rem;
  border-radius: 999px;
  transition: background var(--transition), color var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--ink);
  background: rgba(54, 208, 255, 0.08);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem;
  margin-left: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 31, 50, 0.72);
}

.lang-link {
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

.lang-link.active,
.lang-link:hover {
  color: var(--ink);
  background: rgba(54, 208, 255, 0.12);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  margin-left: auto;
  border: 0;
  background: transparent;
  padding: 0.4rem;
}

.mobile-menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
}

main.container {
  padding-top: 2rem;
  padding-bottom: 3.5rem;
}

.eyebrow,
.signal-label,
.feature-kicker,
.tag,
.card-event,
.single-event {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero {
  margin-top: 1.25rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.8fr);
  gap: 1.5rem;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.page-header,
.card,
.single,
.photo-note {
  background: var(--surface);
  border: 1px solid rgba(133, 197, 255, 0.12);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-copy {
  padding: 3rem;
  border-radius: 30px;
  position: relative;
  overflow: hidden;
}

.hero-copy::after {
  content: "";
  position: absolute;
  inset: auto -10% -35% auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(54, 208, 255, 0.2), transparent 72%);
  pointer-events: none;
}

.hero-panel {
  border-radius: 30px;
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
}

.hero-portrait-frame {
  position: relative;
  overflow: hidden;
  min-height: 320px;
  border-radius: 24px;
  border: 1px solid rgba(143, 255, 224, 0.12);
  background:
    linear-gradient(180deg, rgba(12, 28, 46, 0.94), rgba(7, 17, 31, 0.98)),
    radial-gradient(circle at top, rgba(54, 208, 255, 0.14), transparent 55%);
}

.hero-portrait {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  object-position: center top;
}

.eyebrow {
  color: var(--highlight);
  font-size: 0.78rem;
  margin-bottom: 1.1rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.hero-role {
  margin: 1rem 0 0;
  font-size: 1.15rem;
  color: var(--ink);
}

.hero-lead {
  margin: 1.2rem 0 0;
  font-size: 1.12rem;
  max-width: 48rem;
}

.hero-subtitle {
  margin: 1rem 0 0;
  font-size: 1rem;
  color: var(--muted);
  max-width: 44rem;
}

.hero-summary {
  margin: 1rem 0 0;
  font-size: 0.98rem;
  color: var(--muted);
  max-width: 46rem;
}

.hero-links {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.signal-card {
  padding: 1rem 1.05rem;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(12, 28, 46, 0.96), rgba(7, 17, 31, 0.92));
  border: 1px solid rgba(143, 255, 224, 0.1);
}

.signal-label {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  color: var(--muted);
}

.signal-value {
  margin: 0;
  font-size: 1rem;
  color: var(--ink);
}

.stats-band {
  margin: 1.5rem 0 0;
  padding: 1rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.stat {
  background: var(--surface-strong);
  border: 1px solid rgba(133, 197, 255, 0.12);
  border-radius: 20px;
  padding: 1.15rem 1.1rem;
}

.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.05em;
}

.stat-label {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.home-section {
  margin-top: 1.7rem;
}

.home-section-tight {
  margin-top: 1.4rem;
}

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

.section-header h2,
.page-header h1,
.single-header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.see-all,
.page-desc,
.card-meta,
.card-authors,
.card-summary,
.single-meta,
.single-authors,
.single-content,
.footer-inner p,
.footer-links a,
.proof-card p,
.photo-note p,
.feature-summary {
  color: var(--muted);
}

.page-header {
  padding: 2rem 2.2rem;
  border-radius: 26px;
}

.page-desc {
  margin-top: 0.65rem;
  max-width: 50rem;
}

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

.feature-card,
.proof-card {
  padding: 1.35rem;
  border-radius: 24px;
  background: var(--surface);
  border: 1px solid rgba(133, 197, 255, 0.12);
  box-shadow: var(--shadow);
}

.feature-card h3,
.proof-card h3 {
  margin: 0;
  font-size: 1.28rem;
  line-height: 1.15;
}

.feature-meta {
  margin: 0.65rem 0 0;
  font-size: 0.96rem;
  color: var(--ink);
}

.feature-summary,
.proof-card p {
  margin: 0.9rem 0 0;
}

.content-list {
  display: grid;
  gap: 1.35rem;
  margin-top: 1.5rem;
}

.card {
  border-radius: 24px;
  overflow: hidden;
}

.home-section > .card + .card {
  margin-top: 1.15rem;
}

.card-body,
.single {
  padding: 1.6rem;
}

.card-title,
.single-header h1 {
  color: var(--ink);
}

.card-title {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
}

.card-meta,
.single-meta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 0.8rem;
  font-size: 0.85rem;
}

.card-authors,
.card-summary {
  margin: 0.8rem 0 0;
}

.card-links,
.single-links,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag-row {
  margin-top: 1rem;
}

.tag,
.card-event,
.single-event {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  color: var(--highlight);
  background: var(--accent-soft);
  border: 1px solid rgba(54, 208, 255, 0.15);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #03101d;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 30px rgba(20, 160, 255, 0.18);
  color: #03101d;
}

.btn-outline {
  background: transparent;
  border-color: rgba(23, 32, 51, 0.14);
  color: var(--ink);
}

.btn-outline:hover {
  color: #03101d;
  border-color: transparent;
}

.btn-sm {
  padding: 0.5rem 0.82rem;
  font-size: 0.8rem;
}

.single {
  margin-top: 1.25rem;
  border-radius: 28px;
}

.archive-index {
  margin-top: 1.25rem;
}

.archive-group {
  margin: 1rem 0;
  border: 1px solid rgba(133, 197, 255, 0.12);
  border-radius: 22px;
  background: rgba(11, 22, 39, 0.58);
  overflow: hidden;
}

.archive-group summary {
  cursor: pointer;
  list-style: none;
  padding: 1rem 1.15rem;
  font-weight: 600;
  color: var(--ink);
  background: linear-gradient(180deg, rgba(12, 28, 46, 0.92), rgba(8, 20, 34, 0.92));
}

.archive-group summary::-webkit-details-marker {
  display: none;
}

.archive-group[open] summary {
  border-bottom: 1px solid rgba(133, 197, 255, 0.1);
}

.archive-group ol,
.archive-group ul {
  margin: 0;
  padding: 1rem 1.6rem 1.25rem 3.4rem;
}

.archive-group ol li {
  padding-left: 0.35rem;
}

.archive-group li + li {
  margin-top: 0.85rem;
}

.single-header {
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--line);
}

.single-content {
  margin-top: 1.8rem;
  font-size: 1.02rem;
}

.single-content h2 {
  margin: 2rem 0 0.9rem;
  font-size: 1.55rem;
  line-height: 1.15;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.single-content ul,
.single-content ol {
  padding-left: 1.2rem;
}

.single-content code {
  font-family: var(--font-mono);
  background: rgba(23, 32, 51, 0.06);
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
}

.single-content pre {
  padding: 1rem;
  border-radius: 20px;
  background: rgba(23, 32, 51, 0.05);
  overflow-x: auto;
}

.single-content blockquote {
  margin: 1.4rem 0;
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
}

.photo-note {
  border-radius: 24px;
  padding: 1.35rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.4rem 0 3rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 960px) {
  .hero-grid,
  .feature-grid,
  .proof-grid,
  .stats-band {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 78px;
    padding: 1rem 1.5rem 1.35rem;
    background: rgba(7, 17, 31, 0.98);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
  }

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

  .mobile-menu-toggle {
    display: inline-flex;
  }

  .hero-copy,
  .page-header,
  .card-body,
  .single {
    padding: 1.3rem;
  }

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