:root {
  color-scheme: dark;
  --bg: #070a12;
  --bg-soft: #0d1320;
  --panel: rgba(16, 24, 39, 0.82);
  --panel-strong: #111827;
  --line: rgba(255, 255, 255, 0.12);
  --text: #f8fafc;
  --muted: #a8b3c7;
  --soft: #d8e0ee;
  --blue: #1688ff;
  --cyan: #08c4d8;
  --green: #22c55e;
  --amber: #f59e0b;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.36);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(22, 136, 255, 0.18), transparent 34rem),
    linear-gradient(180deg, #070a12 0%, #0b1020 43%, #090b10 100%);
  color: var(--text);
  line-height: 1.5;
  letter-spacing: 0;
}

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

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

p,
h1,
h2,
h3,
dl,
dd {
  margin: 0;
}

code {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.08rem 0.32rem;
  color: #e7f1ff;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 20;
  transform: translateY(-150%);
  border-radius: 6px;
  background: var(--text);
  color: #070a12;
  padding: 0.6rem 0.85rem;
  font-weight: 700;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem clamp(1rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 10, 18, 0.78);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links,
.hero-actions,
.download-actions,
.site-footer div {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.7rem;
  font-size: 1.02rem;
  font-weight: 800;
}

.brand img {
  border-radius: 8px;
  box-shadow: 0 10px 22px rgba(8, 196, 216, 0.16);
}

.nav-links {
  gap: clamp(0.9rem, 2.4vw, 1.8rem);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
}

.nav-links a,
.site-footer a,
.header-action {
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
}

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

.header-action {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  color: var(--soft);
  font-size: 0.9rem;
  font-weight: 760;
}

.header-action:hover {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
}

.hero {
  position: relative;
  min-height: calc(90svh - 4rem);
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: clamp(5rem, 12vh, 8rem) clamp(1rem, 4vw, 3.5rem) clamp(2.5rem, 7vh, 5rem);
  border-bottom: 1px solid var(--line);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 30%;
  background: linear-gradient(180deg, transparent, rgba(7, 10, 18, 0.92));
  pointer-events: none;
}

.hero-media {
  position: absolute;
  inset: clamp(4rem, 9vw, 7rem) clamp(1rem, 4vw, 3.5rem) auto auto;
  width: min(58vw, 780px);
  opacity: 0.5;
  filter: drop-shadow(0 38px 80px rgba(0, 0, 0, 0.48));
}

.hero-media img {
  border-radius: 24px;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding-top: 18rem;
}

.eyebrow {
  margin-bottom: 0.8rem;
  color: #72d8e7;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  max-width: 690px;
  font-size: clamp(3rem, 6.2vw, 5.8rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 650px;
  margin-top: 1.35rem;
  color: var(--soft);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  justify-content: center;
  border-radius: 999px;
  padding: 0.78rem 1rem;
  font-weight: 800;
  text-align: center;
}

.hero-actions,
.download-actions {
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.button.primary {
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #ffffff;
  box-shadow: 0 18px 40px rgba(8, 196, 216, 0.22);
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

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

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  max-width: 820px;
  margin-top: 2.5rem;
}

.hero-facts div,
.feature-card,
.detail-list article,
.requirements-grid div,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
}

.hero-facts div {
  padding: 1rem;
}

.hero-facts dt {
  font-size: 1.02rem;
  font-weight: 850;
}

.hero-facts dd {
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: 0.94rem;
}

.section {
  padding: clamp(4rem, 9vw, 7rem) clamp(1rem, 4vw, 3.5rem);
}

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

.section-heading h2,
.download-panel h2 {
  font-size: clamp(2rem, 4vw, 3.9rem);
  line-height: 1;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.download-panel p {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1.06rem;
}

.intro-grid,
.requirements-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

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

.feature-card,
.requirements-grid div {
  padding: 1.25rem;
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  margin-bottom: 1.8rem;
  border-radius: 999px;
  background: rgba(8, 196, 216, 0.15);
  color: #97eef7;
  font-size: 0.8rem;
  font-weight: 850;
}

.feature-card h3,
.detail-list h3,
.requirements-grid h3 {
  font-size: 1.16rem;
  line-height: 1.2;
}

.feature-card p,
.detail-list p,
.requirements-grid p,
.faq-list p {
  margin-top: 0.7rem;
  color: var(--muted);
}

.workflow-section {
  background: rgba(255, 255, 255, 0.035);
  border-block: 1px solid var(--line);
}

.workflow-visual {
  margin-top: 2rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.detail-list {
  display: grid;
  gap: 1rem;
}

.detail-list article {
  padding: 1.2rem;
}

.requirements-section {
  background:
    linear-gradient(135deg, rgba(34, 197, 94, 0.08), transparent 34%),
    rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--line);
}

.download-section {
  padding-top: 0;
}

.download-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(22, 136, 255, 0.24), rgba(34, 197, 94, 0.13)),
    var(--panel-strong);
  padding: clamp(1.5rem, 4vw, 3rem);
  box-shadow: var(--shadow);
}

.download-panel > div:first-child {
  max-width: 740px;
}

.download-actions {
  flex-direction: column;
  align-items: stretch;
  min-width: min(100%, 220px);
  margin-top: 0;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
  max-width: 860px;
  margin-top: 2rem;
}

.faq-list details {
  padding: 1.1rem 1.2rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem clamp(1rem, 4vw, 3.5rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  color: var(--text);
  font-weight: 850;
}

.site-footer div {
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-end;
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 6rem;
  }

  .hero-media {
    position: relative;
    inset: auto;
    width: 100%;
    margin: 0 0 2rem;
    opacity: 0.9;
  }

  .hero-content {
    padding-top: 0;
  }

  .hero-facts,
  .intro-grid,
  .requirements-grid,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero-facts {
    gap: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.055);
  }

  .hero-facts div {
    border: 0;
    border-radius: 0;
    background: transparent;
  }

  .hero-facts div + div {
    border-top: 1px solid var(--line);
  }

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

  .site-footer div {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding-inline: 1rem;
  }

  .header-action {
    display: none;
  }

  .hero,
  .section {
    padding-inline: 1rem;
  }

  h1 {
    font-size: clamp(2.55rem, 16vw, 4.2rem);
  }

  .hero-actions,
  .download-actions {
    align-items: stretch;
    flex-direction: column;
    width: 100%;
  }

  .button {
    width: 100%;
  }
}