:root {
  color-scheme: dark;
  --bg: #07110f;
  --bg-2: #0c1715;
  --panel: #101f1c;
  --panel-2: #132923;
  --line: rgba(160, 210, 195, 0.18);
  --text: #edf7f2;
  --muted: #a8bbb5;
  --soft: #d7e7df;
  --cyan: #6ce4dd;
  --green: #8ef0a5;
  --amber: #f4c46d;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 0%, rgba(108, 228, 221, 0.14), transparent 34rem),
    linear-gradient(180deg, #07110f 0%, #091310 38%, #050907 100%);
  font-size: 16px;
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, #000, transparent 78%);
}

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

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 10;
  transform: translateY(-150%);
  padding: 0.65rem 0.9rem;
  border-radius: 6px;
  background: var(--cyan);
  color: #001a17;
  font-weight: 800;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 15, 0.86);
  backdrop-filter: blur(18px);
}

.nav,
.container,
.hero,
.footer {
  width: min(1160px, calc(100% - 32px));
  margin-inline: auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(108, 228, 221, 0.35);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(108, 228, 221, 0.95), rgba(142, 240, 165, 0.7)),
    #0b1d19;
  box-shadow: 0 0 26px rgba(108, 228, 221, 0.22);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  padding: 0.55rem 0.75rem;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.nav-links a:hover {
  background: rgba(255, 255, 255, 0.055);
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(300px, 0.88fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  padding: clamp(3.5rem, 8vw, 7.5rem) 0 2.5rem;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  max-width: 12ch;
  font-size: clamp(3rem, 8vw, 6.8rem);
}

h2 {
  font-size: clamp(1.65rem, 3vw, 2.55rem);
}

h3 {
  font-size: 1.18rem;
}

p {
  margin: 0;
}

.hero-lead {
  max-width: 62ch;
  margin-top: 1.25rem;
  color: var(--soft);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.hero-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.78rem 1rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-weight: 900;
}

.button.primary {
  color: #041310;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 14px 34px rgba(108, 228, 221, 0.16);
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.055);
}

.hero-bullets {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  padding: 0;
  margin: 1.5rem 0 0;
  list-style: none;
}

.hero-bullets li {
  padding: 0.42rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.035);
  font-size: 0.9rem;
  font-weight: 800;
}

.hero-visual {
  margin: 0;
}

.hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(var(--shadow));
}

.container {
  padding-bottom: 5rem;
}

.notice {
  display: grid;
  gap: 0.35rem;
  margin: 1rem 0 2.5rem;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(244, 196, 109, 0.32);
  border-left: 5px solid var(--amber);
  border-radius: 8px;
  color: #ffe9bd;
  background: rgba(244, 196, 109, 0.09);
}

.notice span {
  color: var(--muted);
}

.feature-band,
.checklist-band,
.faq,
.related {
  margin: 3rem 0;
}

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

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

.feature-card,
.section-card,
.faq details,
.related a {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.052), rgba(255, 255, 255, 0.024));
}

.feature-card {
  min-height: 210px;
  padding: 1.15rem;
  color: var(--text);
}

.feature-card:hover {
  border-color: rgba(142, 240, 165, 0.5);
  transform: translateY(-2px);
}

.card-kicker {
  display: inline-block;
  margin-bottom: 1.1rem;
  color: var(--cyan);
  font-size: 0.74rem;
  font-weight: 900;
  text-transform: uppercase;
}

.feature-card p,
.section-card p,
.faq p {
  margin-top: 0.75rem;
  color: var(--muted);
}

.section-card {
  padding: clamp(1rem, 2vw, 1.35rem);
}

.section-card h2 {
  font-size: 1.28rem;
}

.checklist-band {
  padding: clamp(1.1rem, 2vw, 1.5rem);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(108, 228, 221, 0.09), rgba(142, 240, 165, 0.055));
}

.checklist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  padding: 0;
  margin: 1.2rem 0 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding-left: 1.65rem;
  color: var(--soft);
}

.checklist li::before {
  position: absolute;
  left: 0;
  top: 0.12rem;
  content: "✓";
  color: var(--green);
  font-weight: 900;
}

.faq {
  max-width: 860px;
}

.faq details {
  padding: 1rem 1.05rem;
  margin-top: 0.75rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.related h2 {
  margin-bottom: 1rem;
}

.related div {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.related a {
  display: grid;
  gap: 0.35rem;
  min-height: 120px;
  padding: 1rem;
  color: var(--text);
  font-weight: 900;
}

.related span {
  color: var(--cyan);
  font-size: 0.74rem;
  text-transform: uppercase;
}

.footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.7fr);
  gap: 2rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer p {
  max-width: 72ch;
  margin-top: 1rem;
}

.footer nav {
  display: grid;
  gap: 0.45rem;
}

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

.footer-brand {
  color: var(--text);
}

@media (prefers-reduced-motion: no-preference) {
  .feature-card,
  .button,
  .nav-links a {
    transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
  }
}

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 0.9rem 0;
  }

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

  .hero {
    grid-template-columns: 1fr;
    padding-top: 2.5rem;
  }

  h1 {
    max-width: 11ch;
  }

  .hero-visual {
    max-width: 520px;
  }

  .card-row,
  .content-grid,
  .related div,
  .checklist {
    grid-template-columns: 1fr;
  }

  .band-heading,
  .footer {
    display: block;
  }

  .footer nav {
    margin-top: 1.5rem;
  }
}

@media (max-width: 460px) {
  .nav,
  .container,
  .hero,
  .footer {
    width: min(100% - 24px, 1160px);
  }

  h1 {
    font-size: 2.75rem;
  }

  .button {
    width: 100%;
  }

  .nav-links a {
    padding-inline: 0.45rem;
  }
}