:root {
  color-scheme: dark;
  --bg-main: #050814;
  --bg-elevated: #0b1020;
  --bg-elevated-soft: #10172a;
  --accent: #3cf5ff;
  --accent-soft: rgba(60, 245, 255, 0.14);
  --accent-alt: #3f7bff;
  --text-main: #f5f7ff;
  --text-muted: #a0aec0;
  --border-subtle: rgba(148, 163, 184, 0.28);
  --shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.9);
  --radius-xl: 18px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --transition-fast: 0.18s ease-out;
  --transition-med: 0.24s ease-out;
  --max-width: 1120px;
  --nav-height: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1f2937 0, #020617 45%, #000 100%);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

main {
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: radial-gradient(circle at top left, rgba(60, 245, 255, 0.12), transparent 55%),
    rgba(2, 6, 23, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.28);
}

.logo-area {
  display: flex;
  align-items: center;
}

.logo-area a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 120px;
  height: 32px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 14px;
}

.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
}

.site-nav a {
  padding: 6px 4px;
  position: relative;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
  border-radius: 999px;
  transition: width var(--transition-fast);
}

.site-nav a:hover {
  color: var(--text-main);
}

.site-nav a:hover::after {
  width: 100%;
}

.nav-download {
  padding-inline: 14px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px 0;
  background: #e5e7eb;
  border-radius: 999px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.hero {
  margin: 28px auto 0;
  padding: 16px 16px 32px;
  max-width: var(--max-width);
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 24px;
}

.hero-media {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  background: radial-gradient(circle at top, #1e293b, #020617 70%);
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: var(--shadow-soft);
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at bottom right, rgba(60, 245, 255, 0.28), transparent 60%);
  mix-blend-mode: screen;
  opacity: 0.6;
  pointer-events: none;
}

.hero-media picture,
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  align-self: center;
}

.hero h1 {
  font-size: clamp(1.9rem, 3.1vw, 2.6rem);
  line-height: 1.2;
  margin: 0 0 10px;
}

.hero-subtitle {
  color: var(--text-muted);
  margin: 0 0 14px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}

.hero-tags li {
  font-size: 12px;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 12px;
}

.hero-meta {
  font-size: 13px;
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  font-size: 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition-med), color var(--transition-med), transform var(--transition-fast),
    box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: #020617;
  box-shadow: 0 14px 40px rgba(56, 189, 248, 0.5);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 50px rgba(56, 189, 248, 0.7);
}

.btn.primary.large {
  padding: 12px 24px;
  font-size: 15px;
}

.btn.ghost {
  background: rgba(15, 23, 42, 0.9);
  color: var(--text-main);
  border-color: rgba(148, 163, 184, 0.6);
}

.btn.ghost:hover {
  border-color: var(--accent);
  background: rgba(15, 23, 42, 1);
}

.section {
  padding: 28px 16px 8px;
}

.section.alt {
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.96));
  border-top: 1px solid rgba(15, 23, 42, 0.9);
  border-bottom: 1px solid rgba(15, 23, 42, 0.9);
}

.section-inner {
  margin: 0 auto;
  max-width: var(--max-width);
}

.section-header {
  text-align: left;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 1.4rem;
  margin: 0 0 4px;
}

.section-header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.two-columns {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
}

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

.card {
  background: radial-gradient(circle at top left, rgba(60, 245, 255, 0.1), rgba(15, 23, 42, 0.96));
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.7);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.card p {
  margin-top: 0;
  font-size: 0.95rem;
}

.meta-list {
  margin: 0;
  padding: 0;
}

.meta-list div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(30, 64, 175, 0.55);
}

.meta-list div:last-child {
  border-bottom: none;
}

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

.meta-list dd {
  margin: 0;
  font-size: 0.9rem;
  text-align: right;
}

.feature-card p,
.guide-card p {
  font-size: 0.95rem;
}

.guide-card ul,
.guide-card ol {
  padding-left: 18px;
  margin: 0;
  font-size: 0.9rem;
}

.guide-card li + li {
  margin-top: 4px;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.shot {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.45);
}

.shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-med), opacity var(--transition-med);
}

.shot:hover img {
  transform: scale(1.03);
  opacity: 0.96;
}

.faq-card p {
  font-size: 0.95rem;
}

.download-section {
  padding-bottom: 32px;
}

.download-panel {
  margin-top: 8px;
}

.download-text {
  margin-top: 0;
  margin-bottom: 10px;
}

.download-notes {
  margin: 10px 0 0;
  padding-left: 18px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9), #020617);
  padding: 18px 16px 26px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-meta {
  margin-bottom: 10px;
}

.footer-title {
  margin: 0 0 4px;
  color: var(--text-main);
  font-weight: 500;
}

.footer-desc {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

.footer-copy {
  margin: 0;
  font-size: 0.8rem;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-media {
    order: 1;
    max-height: 260px;
  }

  .hero-content {
    order: 2;
  }

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

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

@media (max-width: 768px) {
  .site-header {
    padding-inline: 14px;
  }

  .site-nav {
    position: fixed;
    inset: var(--nav-height) 0 auto 0;
    background: rgba(2, 6, 23, 0.98);
    padding: 12px 16px 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .hero {
    padding-inline: 14px;
  }

  .section {
    padding-inline: 14px;
  }

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

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .footer-links {
    flex-direction: column;
  }
}