:root {
  --ink: #070a12;
  --ink-soft: #111827;
  --panel: #121b2c;
  --text: #101827;
  --muted: #59677d;
  --paper: #f5f8fc;
  --paper-2: #eaf1f8;
  --line: rgba(16, 24, 39, 0.13);
  --cyan: #00d4ff;
  --cyan-dark: #008daf;
  --violet: #7c5cff;
  --mint: #36f0b8;
  --amber: #ffb84d;
  --white: #ffffff;
  --shadow: 0 24px 80px rgba(7, 10, 18, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 5vw;
  border-bottom: 1px solid rgba(180, 198, 255, 0.12);
  background: rgba(7, 10, 18, 0.9);
  color: var(--white);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  border: 2px solid rgba(255, 255, 255, 0.84);
  border-radius: 50%;
  background:
    conic-gradient(from 25deg, var(--cyan), var(--violet), var(--mint), var(--cyan));
  box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.1), 0 0 22px rgba(0, 212, 255, 0.28);
}

.nav-links {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.nav-links a {
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.95rem;
  font-weight: 700;
}

.nav-links a:hover {
  background: rgba(0, 212, 255, 0.11);
  color: var(--white);
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: min(760px, calc(100svh - 116px));
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
}

.hero-bg,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(7, 10, 18, 0.92) 0%, rgba(7, 10, 18, 0.7) 52%, rgba(7, 10, 18, 0.2) 100%),
    linear-gradient(0deg, rgba(7, 10, 18, 0.26) 0%, rgba(7, 10, 18, 0) 35%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(860px, 90vw);
  margin-left: 5vw;
  padding: 5rem 0;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--violet);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--cyan);
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1 {
  max-width: 15ch;
  margin: 0;
  font-size: 4.55rem;
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  max-width: 760px;
  margin: 0;
  font-size: 2.35rem;
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 680px;
  margin: 1.5rem 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.15rem;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0.85rem 1.1rem;
  font-weight: 900;
  line-height: 1.1;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

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

.button-primary {
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  color: var(--white);
  box-shadow: 0 16px 44px rgba(0, 212, 255, 0.28);
}

.button-primary:hover {
  background: linear-gradient(135deg, #2ce6ff, #8e74ff);
}

.button-secondary {
  border-color: rgba(0, 212, 255, 0.4);
  background: rgba(0, 212, 255, 0.08);
  color: var(--white);
}

.button-secondary:hover {
  border-color: rgba(54, 240, 184, 0.72);
  background: rgba(54, 240, 184, 0.12);
}

.button-large {
  min-height: 3.5rem;
  padding-inline: 1.35rem;
}

.button-icon {
  width: 1.2rem;
  height: 1.2rem;
  margin-right: 0.55rem;
  fill: currentColor;
  flex: 0 0 auto;
}

.signal-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--ink-soft);
  border-bottom: 1px solid rgba(0, 212, 255, 0.14);
}

.signal-item {
  min-height: 112px;
  padding: 1.3rem 5vw;
  background:
    linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(124, 92, 255, 0.1)),
    var(--panel);
}

.signal-value {
  display: block;
  color: var(--white);
  font-size: 1.8rem;
  font-weight: 900;
  line-height: 1;
}

.signal-label {
  display: block;
  margin-top: 0.4rem;
  color: rgba(230, 238, 255, 0.72);
  font-weight: 700;
}

.section {
  padding: 6rem 5vw;
}

.section-muted {
  background:
    linear-gradient(180deg, rgba(0, 212, 255, 0.08), rgba(124, 92, 255, 0.08)),
    var(--paper-2);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(180px, 0.36fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  margin-bottom: 2.5rem;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  max-width: 1080px;
}

.two-column p,
.join-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

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

.feature-card {
  min-height: 260px;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
}

.feature-card:nth-child(2) {
  border-top: 5px solid var(--cyan);
}

.feature-card:nth-child(3) {
  border-top: 5px solid var(--violet);
}

.feature-card:nth-child(4) {
  border-top: 5px solid var(--mint);
}

.feature-card:first-child {
  border-top: 5px solid var(--cyan-dark);
}

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

.feature-icon {
  width: 2.4rem;
  height: 2.4rem;
  margin-bottom: 1.2rem;
  fill: var(--cyan-dark);
}

.join-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: center;
  background:
    radial-gradient(circle at 85% 40%, rgba(0, 212, 255, 0.16), transparent 30%),
    radial-gradient(circle at 12% 88%, rgba(124, 92, 255, 0.18), transparent 34%),
    var(--ink);
  color: var(--white);
}

.join-section .eyebrow {
  color: var(--cyan);
}

.join-copy {
  max-width: 780px;
}

.join-copy p {
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.74);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 5vw;
  background: var(--white);
  color: var(--muted);
  font-weight: 700;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--cyan-dark);
}

@media (max-width: 980px) {
  h1 {
    font-size: 3.6rem;
  }

  h2 {
    font-size: 2rem;
  }

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

  .section-heading,
  .two-column,
  .join-section {
    grid-template-columns: 1fr;
  }

  .join-section .button {
    width: fit-content;
  }
}

@media (max-width: 680px) {
  .site-header {
    position: relative;
    min-height: auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  .nav-links {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    max-width: 340px;
  }

  .nav-links a {
    min-width: 0;
    padding-inline: 0.35rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.08);
  }

  .hero {
    min-height: min(760px, calc(100svh - 160px));
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(7, 10, 18, 0.93), rgba(7, 10, 18, 0.66));
  }

  .hero-content {
    width: min(340px, calc(100% - 3rem));
    max-width: 340px;
    margin-left: 1.5rem;
    margin-right: auto;
    padding: 4rem 0;
  }

  h1 {
    max-width: 100%;
    font-size: 2.12rem;
    line-height: 1.04;
  }

  h2 {
    font-size: 1.65rem;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .button {
    width: 100%;
  }

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

  .signal-item {
    min-height: 92px;
  }

  .section {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .feature-card {
    min-height: auto;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}