:root {
  --bg: #071015;
  --bg-soft: #0d171d;
  --surface: rgba(11, 24, 31, 0.84);
  --surface-strong: rgba(11, 24, 31, 0.96);
  --line: rgba(168, 255, 232, 0.14);
  --line-strong: rgba(168, 255, 232, 0.3);
  --text: #eef8fb;
  --muted: #8eabb6;
  --accent: #a8ffe8;
  --accent-strong: #68e0d7;
  --accent-cool: #75b8ff;
  --shadow: 0 24px 90px rgba(0, 0, 0, 0.32);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --max-width: 1180px;
  --body-font: "Instrument Sans", "Segoe UI", sans-serif;
  --display-font: "Syne", "Avenir Next", sans-serif;
  --mono-font: "IBM Plex Mono", "SFMono-Regular", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: var(--body-font);
  background:
    radial-gradient(circle at top left, rgba(41, 115, 109, 0.42), transparent 33%),
    radial-gradient(circle at 88% 82%, rgba(31, 71, 122, 0.44), transparent 28%),
    linear-gradient(180deg, #081217 0%, #071015 52%, #060d12 100%);
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.72), transparent 82%);
}

body::after {
  background:
    radial-gradient(circle at 20% 20%, rgba(168, 255, 232, 0.08), transparent 12%),
    radial-gradient(circle at 80% 40%, rgba(117, 184, 255, 0.08), transparent 14%);
  opacity: 0.7;
}

a {
  color: inherit;
  text-decoration-color: rgba(168, 255, 232, 0.5);
}

code {
  font-family: var(--mono-font);
}

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

.skip-link {
  position: absolute;
  left: 20px;
  top: -44px;
  padding: 12px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: #00110d;
  z-index: 10;
  font-weight: 700;
}

.skip-link:focus {
  top: 18px;
}

.site-shell {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding: 20px 0 48px;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 18px;
  margin-bottom: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(7, 16, 21, 0.72);
  backdrop-filter: blur(22px);
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}

.brand-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.brand-copy strong {
  font-family: var(--display-font);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-copy span {
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.nav {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
}

.nav a {
  color: var(--muted);
  font-size: 0.94rem;
  text-decoration: none;
  transition: color 160ms ease;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease;
}

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

.button-primary {
  color: #03100c;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-cool) 100%);
  box-shadow: 0 12px 32px rgba(107, 224, 214, 0.22);
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.button-small {
  min-height: 42px;
  padding: 0 16px;
  font-size: 0.92rem;
}

.section {
  padding: 46px 0;
}

.section-tight {
  padding: 18px 0 28px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  gap: 30px;
  align-items: stretch;
}

.hero-copy,
.hero-visual,
.support-strip,
.feature-card,
.terminal-card,
.difference-card,
.cta-panel,
.faq-list,
.board-frame {
  position: relative;
}

.hero-copy,
.board-frame,
.support-strip,
.feature-card,
.terminal-card,
.difference-card,
.cta-panel,
.faq-list {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(11, 24, 31, 0.82), rgba(7, 16, 21, 0.94));
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 34px;
}

.eyebrow,
.card-label,
.feature-index,
.difference-label,
.terminal-label {
  margin: 0;
  font-family: var(--mono-font);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1,
.section-heading h2,
.cta-panel h2 {
  margin: 10px 0 0;
  font-family: var(--display-font);
  font-size: clamp(2.8rem, 4vw, 4.9rem);
  line-height: 0.94;
  letter-spacing: -0.04em;
}

.hero-dek,
.section-heading p,
.cta-panel p,
.signal-card dd,
.feature-card p,
.workflow-list li,
.difference-card li,
.faq-list p,
.terminal-note,
.site-footer p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.72;
}

.hero-dek {
  max-width: 60ch;
  margin: 20px 0 0;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 0;
}

.signal-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
}

.signal-card dt {
  font-family: var(--display-font);
  font-size: 1.22rem;
  font-weight: 700;
}

.signal-card dd {
  margin: 10px 0 0;
  font-size: 0.96rem;
}

.board-frame {
  min-height: 100%;
  overflow: hidden;
  padding: 26px;
}

.board-frame::before,
.board-frame::after {
  content: "";
  position: absolute;
  inset: auto;
  pointer-events: none;
}

.board-frame::before {
  width: 420px;
  height: 420px;
  right: -110px;
  top: -130px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(107, 224, 214, 0.18) 0%, rgba(107, 224, 214, 0) 72%);
}

.board-frame::after {
  left: 36px;
  right: 36px;
  top: 108px;
  bottom: 92px;
  border-radius: 28px;
  border: 1px dashed rgba(168, 255, 232, 0.08);
}

.board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(168, 255, 232, 0.18);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.86rem;
  background: rgba(168, 255, 232, 0.06);
}

.status-pill::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(168, 255, 232, 0.08);
}

.map-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-top: 24px;
  z-index: 1;
}

.map-grid::before,
.map-grid::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.map-grid::before {
  left: 13%;
  right: 13%;
  top: 49%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 255, 232, 0.32), transparent);
}

.map-grid::after {
  top: 12%;
  bottom: 16%;
  left: 50%;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(117, 184, 255, 0.22), transparent);
}

.map-card {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)),
    rgba(7, 16, 21, 0.9);
  backdrop-filter: blur(8px);
}

.map-card h2 {
  margin: 8px 0 0;
  font-size: 1rem;
  font-family: var(--display-font);
  line-height: 1.08;
}

.map-card p:last-child {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.map-card-issue {
  grid-column: 1 / span 3;
}

.map-card-agent {
  grid-column: 4 / span 3;
}

.map-card-runtime {
  grid-column: 2 / span 2;
}

.map-card-skill {
  grid-column: 4 / span 2;
}

.map-card-review {
  grid-column: 1 / span 3;
}

.map-card-ship {
  grid-column: 4 / span 3;
}

.event-rail {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.event-rail span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--mono-font);
  font-size: 0.8rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.02);
}

.event-rail span::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(168, 255, 232, 0.88);
}

.support-strip {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 18px;
  padding: 20px 24px;
}

.support-copy p:last-child,
.support-note {
  margin: 8px 0 0;
}

.support-copy p:last-child {
  font-family: var(--display-font);
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  line-height: 1.3;
}

.support-note {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

.support-note span {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.92rem;
}

.section-heading {
  max-width: 760px;
}

.section-heading h2 {
  font-size: clamp(2.2rem, 3.1vw, 3.6rem);
}

.section-heading p {
  margin: 16px 0 0;
}

.feature-grid,
.difference-grid {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

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

.feature-card {
  min-height: 280px;
  padding: 24px;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  right: -48px;
  bottom: -48px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(117, 184, 255, 0.14), transparent 68%);
}

.feature-index {
  color: var(--accent-cool);
}

.feature-card h3 {
  position: relative;
  margin: 14px 0 0;
  font-family: var(--display-font);
  font-size: 1.55rem;
  line-height: 1.05;
}

.feature-card p:last-child {
  position: relative;
  margin: 16px 0 0;
}

.workflow-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 20px;
  margin-top: 28px;
}

.workflow-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-list li {
  padding: 22px 24px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.workflow-list strong {
  display: block;
  color: var(--text);
  margin-bottom: 6px;
}

.terminal-card {
  padding: 24px;
}

.terminal-card pre {
  margin: 18px 0 0;
  padding: 18px;
  overflow-x: auto;
  border-radius: 20px;
  border: 1px solid rgba(117, 184, 255, 0.18);
  background: #061015;
}

.terminal-card code {
  font-family: var(--mono-font);
  font-size: 0.95rem;
  color: #bff2ff;
}

.terminal-note {
  margin: 16px 0 0;
  font-size: 0.94rem;
}

.difference-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 28px;
}

.difference-card {
  padding: 26px;
}

.difference-card-accent {
  border-color: rgba(168, 255, 232, 0.24);
  background:
    radial-gradient(circle at top right, rgba(168, 255, 232, 0.12), transparent 44%),
    linear-gradient(180deg, rgba(11, 24, 31, 0.88), rgba(7, 16, 21, 0.96));
}

.difference-card ul {
  margin: 18px 0 0;
  padding-left: 18px;
}

.difference-card li + li {
  margin-top: 12px;
}

.faq-list {
  margin-top: 26px;
  padding: 12px;
}

.faq-list details {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-list details:last-child {
  border-bottom: 0;
}

.faq-list summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 14px;
  font-family: var(--display-font);
  font-size: 1.3rem;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  float: right;
  color: var(--accent);
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list p {
  margin: 0;
  padding: 0 14px 22px;
}

.cta-panel {
  padding: 34px;
  overflow: hidden;
}

.cta-panel::after {
  content: "";
  position: absolute;
  inset: auto -12% -50% auto;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168, 255, 232, 0.16), transparent 66%);
  pointer-events: none;
}

.site-footer {
  display: grid;
  gap: 14px;
  padding: 24px 0 12px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
}

.footer-links a {
  text-decoration: none;
}

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

.footer-meta {
  font-family: var(--mono-font);
  font-size: 0.86rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 1080px) {
  .topbar {
    border-radius: 28px;
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .hero,
  .support-strip,
  .workflow-layout,
  .difference-grid {
    grid-template-columns: 1fr;
  }

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

  .support-note {
    justify-content: flex-start;
  }

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

  .map-grid::before,
  .map-grid::after {
    display: none;
  }

  .map-card-issue,
  .map-card-agent,
  .map-card-runtime,
  .map-card-skill,
  .map-card-review,
  .map-card-ship {
    grid-column: auto;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(calc(100% - 20px), var(--max-width));
    padding-top: 10px;
  }

  .topbar {
    top: 10px;
    padding: 16px;
  }

  .nav {
    gap: 12px;
  }

  .brand-copy span {
    white-space: normal;
  }

  .hero-copy,
  .board-frame,
  .feature-card,
  .difference-card,
  .terminal-card,
  .faq-list,
  .cta-panel,
  .support-strip {
    padding-left: 18px;
    padding-right: 18px;
  }

  .signal-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 30px 0;
  }

  .event-rail {
    gap: 10px;
  }

  .event-rail span {
    font-size: 0.72rem;
  }

  .board-header {
    align-items: flex-start;
    flex-direction: column;
  }

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