:root {
  --font-sans: "Inter", "Manrope", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: "Space Grotesk", "Manrope", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  --color-bg: #070914;
  --color-bg-soft: #0c1022;
  --color-bg-elevated: #111733;
  --color-surface: rgba(17, 23, 51, 0.78);
  --color-surface-strong: #161f43;
  --color-line: rgba(137, 155, 255, 0.22);
  --color-text: #eef3ff;
  --color-muted: #aeb8d8;
  --color-heading: #ffffff;
  --color-primary: #7c5cff;
  --color-primary-dark: #5638d8;
  --color-primary-soft: rgba(124, 92, 255, 0.16);
  --color-accent: #25e6c8;
  --color-accent-soft: rgba(37, 230, 200, 0.16);
  --color-warning: #ffc861;
  --color-danger: #ff6b8a;
  --color-link: #90f7e8;
  --color-card: rgba(15, 20, 44, 0.9);
  --color-card-alt: rgba(21, 29, 64, 0.86);
  --shadow-soft: 0 24px 70px rgba(0, 0, 0, 0.34);
  --shadow-glow: 0 0 44px rgba(37, 230, 200, 0.16);
  --radius-xs: 10px;
  --radius-sm: 16px;
  --radius-md: 24px;
  --radius-lg: 34px;
  --container: 1160px;
  --section: 92px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background:
    radial-gradient(circle at top left, rgba(124, 92, 255, 0.24), transparent 34rem),
    radial-gradient(circle at 80% 10%, rgba(37, 230, 200, 0.18), transparent 30rem),
    linear-gradient(180deg, #070914 0%, #080b18 48%, #050611 100%);
  line-height: 1.65;
  min-width: 320px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.85), transparent 78%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background: linear-gradient(90deg, rgba(7,9,20,0.96), transparent 16%, transparent 84%, rgba(7,9,20,0.96));
}

img,
svg {
  max-width: 100%;
  height: auto;
}

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

a:hover {
  color: #ffffff;
}

p {
  margin: 0 0 1rem;
  color: var(--color-muted);
}

ul,
ol {
  color: var(--color-muted);
  padding-left: 1.2rem;
}

li + li {
  margin-top: 0.55rem;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--color-heading);
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin: 0;
}

h1 {
  font-size: clamp(2.55rem, 6vw, 5.8rem);
}

h2 {
  font-size: clamp(2rem, 3.8vw, 3.35rem);
  margin-bottom: 1.2rem;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  margin-bottom: 0.75rem;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  transform: translateY(-150%);
  background: var(--color-accent);
  color: #041017;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-xs);
  z-index: 100;
  font-weight: 800;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--color-line);
  background: rgba(7, 9, 20, 0.78);
  backdrop-filter: blur(18px);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  font-family: var(--font-display);
  color: #fff;
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.08rem;
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 0 34px rgba(124, 92, 255, 0.35);
}

.logo-mark img {
  width: 26px;
  height: 26px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--color-muted);
  font-size: 0.94rem;
  padding: 0.62rem 0.78rem;
  border-radius: 999px;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: #031019 !important;
  background: var(--color-accent) !important;
  font-weight: 800;
}

.hero {
  padding: 86px 0 58px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.8fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: #dffdf8;
  background: rgba(37, 230, 200, 0.1);
  border: 1px solid rgba(37, 230, 200, 0.24);
  border-radius: 999px;
  padding: 0.48rem 0.78rem;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  margin-bottom: 1.3rem;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-accent);
  box-shadow: 0 0 18px var(--color-accent);
}

.lead {
  font-size: clamp(1.08rem, 2vw, 1.34rem);
  color: #cbd5f4;
  max-width: 760px;
  margin-top: 1.35rem;
}

.hero-actions,
.section-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 48px;
  padding: 0.85rem 1.18rem;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

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

.btn-primary {
  color: #041017;
  background: linear-gradient(135deg, var(--color-accent), #d2fff8);
  box-shadow: 0 18px 42px rgba(37, 230, 200, 0.22);
}

.btn-primary:hover {
  color: #041017;
  box-shadow: 0 22px 52px rgba(37, 230, 200, 0.28);
}

.btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
}

.btn-secondary:hover {
  border-color: rgba(144, 247, 232, 0.48);
  background: rgba(144, 247, 232, 0.09);
}

.hero-panel {
  position: relative;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02)),
    var(--color-card);
  padding: 1rem;
  box-shadow: var(--shadow-soft), var(--shadow-glow);
  overflow: hidden;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: radial-gradient(circle at 30% 0%, rgba(37,230,200,0.28), transparent 34%), radial-gradient(circle at 90% 30%, rgba(124,92,255,0.28), transparent 38%);
  opacity: 0.72;
  pointer-events: none;
}

.hero-panel > * {
  position: relative;
}

.visual-card {
  border-radius: calc(var(--radius-lg) - 10px);
  background: #0a0f22;
  border: 1px solid rgba(255,255,255,0.1);
  overflow: hidden;
}

.visual-caption {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  padding: 1rem;
}

.metric-pill {
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 0.75rem;
}

.metric-pill strong {
  display: block;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.metric-pill span {
  color: var(--color-muted);
  font-size: 0.78rem;
}

.page-hero {
  padding: 72px 0 42px;
}

.page-hero .lead {
  max-width: 830px;
}

.breadcrumbs {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin-bottom: 1.2rem;
}

.breadcrumbs a {
  color: #d8fff8;
}

.section {
  padding: var(--section) 0;
}

.section.compact {
  padding: 54px 0;
}

.section-head {
  max-width: 820px;
  margin-bottom: 2.2rem;
}

.section-kicker {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.83rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.grid {
  display: grid;
  gap: 1.1rem;
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.feature-card,
.article-card,
.note-card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.025)), var(--color-card);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.18);
}

.card,
.feature-card,
.note-card {
  padding: clamp(1.25rem, 2.4vw, 1.9rem);
}

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #041017;
  background: linear-gradient(135deg, var(--color-accent), #ffffff);
  margin-bottom: 1.1rem;
  font-family: var(--font-display);
  font-weight: 900;
}

.card strong {
  color: #fff;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.8fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.split.reverse {
  grid-template-columns: minmax(320px, 0.8fr) minmax(0, 0.95fr);
}

.media-frame {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.04);
  padding: 0.85rem;
  box-shadow: var(--shadow-soft);
}

.media-frame img {
  display: block;
  border-radius: calc(var(--radius-lg) - 10px);
  background: #080d1f;
}

.timeline {
  counter-reset: step;
  display: grid;
  gap: 1rem;
}

.timeline-item {
  counter-increment: step;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.2rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.045);
}

.timeline-item::before {
  content: counter(step, decimal-leading-zero);
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #041017;
  background: var(--color-warning);
  font-family: var(--font-mono);
  font-weight: 900;
}

.timeline-item h3 {
  margin-top: 0.15rem;
}

.data-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.2rem;
}

.data-item {
  padding: 1.1rem;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.055);
  border: 1px solid rgba(255,255,255,0.09);
}

.data-item b {
  display: block;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.1;
}

.data-item span {
  color: var(--color-muted);
  font-size: 0.86rem;
}

.article-card {
  overflow: hidden;
}

.article-card .article-body {
  padding: 1.35rem;
}

.article-card img {
  display: block;
  width: 100%;
  background: #090d1e;
}

.tag-list {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  margin: 0;
  border: 1px solid rgba(144,247,232,0.2);
  color: #dffdf8;
  background: rgba(144,247,232,0.08);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.83rem;
}

.callout {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(37,230,200,0.24);
  background:
    radial-gradient(circle at 90% 20%, rgba(37,230,200,0.2), transparent 30%),
    radial-gradient(circle at 10% 100%, rgba(124,92,255,0.26), transparent 34%),
    rgba(14, 20, 45, 0.92);
  padding: clamp(1.6rem, 4vw, 3rem);
  box-shadow: var(--shadow-soft);
}

.callout h2 {
  max-width: 780px;
}

.callout p {
  max-width: 840px;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0 0;
}

.check-list li {
  position: relative;
  padding-left: 2rem;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  background: rgba(37,230,200,0.16);
  color: var(--color-accent);
  font-weight: 900;
  line-height: 1;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.035);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  color: var(--color-muted);
}

th {
  color: #fff;
  font-family: var(--font-display);
  background: rgba(255,255,255,0.05);
}

tr:last-child td {
  border-bottom: 0;
}

.form-card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-card);
  padding: clamp(1.35rem, 3vw, 2rem);
  box-shadow: var(--shadow-soft);
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

label {
  display: block;
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.45rem;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid rgba(255,255,255,0.13);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  color: #fff;
  padding: 0.95rem 1rem;
  font: inherit;
  outline: none;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(37,230,200,0.12);
}

.help-text {
  font-size: 0.88rem;
  color: var(--color-muted);
}

.site-footer {
  border-top: 1px solid var(--color-line);
  padding: 52px 0 34px;
  background: rgba(4, 6, 16, 0.72);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.8fr 0.8fr;
  gap: 2rem;
  align-items: start;
}

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

.footer-links a {
  color: var(--color-muted);
}

.footer-links a:hover {
  color: #fff;
}

.footer-note {
  margin-top: 2rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  color: #8e9abd;
  font-size: 0.9rem;
}

@media (max-width: 980px) {
  :root {
    --section: 72px;
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 1rem 0;
  }

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

  .hero-grid,
  .split,
  .split.reverse {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .grid-4,
  .data-strip,
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .hero,
  .page-hero {
    padding-top: 46px;
  }

  .site-nav a {
    padding: 0.5rem 0.6rem;
    font-size: 0.88rem;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .data-strip,
  .footer-grid,
  .form-row,
  .visual-caption {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .section-actions,
  .cta-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}