:root {
  --color-background: #0f172a;
  --color-surface: #1b2336;
  --color-surface-raised: #222d43;
  --color-surface-soft: #172136;
  --color-foreground: #f8fafc;
  --color-muted: #c2ccda;
  --color-muted-strong: #94a3b8;
  --color-border: #3c4a62;
  --color-accent: #22c55e;
  --color-accent-strong: #4ade80;
  --color-on-accent: #07130b;
  --color-danger: #fca5a5;
  --color-danger-surface: #3a202b;
  --max-width: 1120px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.24);
  --transition: 200ms ease;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
}

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

a {
  color: var(--color-accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: #86efac; }

button, a { -webkit-tap-highlight-color: transparent; }

:focus-visible {
  outline: 3px solid var(--color-accent-strong);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-weight: 700;
  transform: translateY(-150%);
  transition: transform var(--transition);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(60, 74, 98, 0.82);
  background: rgba(15, 23, 42, 0.94);
  backdrop-filter: blur(14px);
}

.site-header-inner, .container {
  width: min(100% - 48px, var(--max-width));
  margin: 0 auto;
}

.site-header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  gap: 12px;
  color: var(--color-foreground);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.98rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
}

.site-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-size: 0.92rem;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.site-nav a:hover, .site-nav a[aria-current="page"] {
  background: var(--color-surface);
  color: var(--color-foreground);
}

.site-nav .nav-cta {
  margin-left: 8px;
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-weight: 700;
}

.site-nav .nav-cta:hover { background: var(--color-accent-strong); color: var(--color-on-accent); }
.site-nav .nav-cta.is-disabled { background: var(--color-surface-raised); color: var(--color-muted-strong); cursor: not-allowed; }

main { overflow: hidden; }

.hero { padding: 96px 0 80px; }

.hero-grid, .split-grid, .purchase-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: 72px;
}

.eyebrow, .section-label {
  margin: 0 0 18px;
  color: var(--color-accent-strong);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3 {
  margin: 0;
  color: var(--color-foreground);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: -0.035em;
}

h1 { max-width: 760px; font-size: clamp(2.45rem, 6vw, 5.1rem); line-height: 1.04; }
h2 { font-size: clamp(1.7rem, 3vw, 2.65rem); line-height: 1.12; }
h3 { font-size: 1.08rem; line-height: 1.35; }
p { margin: 0 0 18px; }

.hero-copy {
  max-width: 690px;
  margin-top: 24px;
  color: var(--color-muted);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.hero-actions, .inline-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--color-accent); color: var(--color-on-accent); box-shadow: 0 8px 20px rgba(34, 197, 94, 0.16); }
.button-primary:hover { background: var(--color-accent-strong); color: var(--color-on-accent); }
.button-secondary { border-color: var(--color-border); background: transparent; color: var(--color-foreground); }
.button-secondary:hover { border-color: var(--color-muted-strong); background: var(--color-surface); color: var(--color-foreground); }

.button.is-disabled, .button.is-disabled:hover {
  border-color: var(--color-border);
  background: var(--color-surface-raised);
  box-shadow: none;
  color: var(--color-muted-strong);
  cursor: not-allowed;
  transform: none;
}

.status-line { display: flex; align-items: center; gap: 9px; margin-top: 22px; color: var(--color-muted-strong); font-size: 0.88rem; }
.status-dot { width: 9px; height: 9px; flex: 0 0 auto; border-radius: 50%; background: var(--color-accent); box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12); }

.hero-visual { position: relative; }
.hero-visual::before { position: absolute; top: -52px; right: -80px; width: 280px; height: 280px; border: 1px solid rgba(74, 222, 128, 0.2); border-radius: 50%; content: ""; }

.download-card { position: relative; z-index: 1; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-md); }
.card-bar { display: flex; min-height: 48px; align-items: center; justify-content: space-between; padding: 0 18px; border-bottom: 1px solid var(--color-border); background: var(--color-surface-soft); color: var(--color-muted-strong); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.76rem; }
.window-dots { display: flex; gap: 6px; }
.window-dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--color-border); }
.download-body { display: grid; gap: 18px; padding: 26px; }
.download-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; padding: 15px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: rgba(15, 23, 42, 0.38); }
.download-row small { display: block; margin-bottom: 5px; color: var(--color-muted-strong); font-size: 0.74rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.filename { overflow-wrap: anywhere; color: var(--color-foreground); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.85rem; }
.filename.bad { color: var(--color-danger); }
.filename.good { color: var(--color-accent-strong); }
.arrow-mark { color: var(--color-muted-strong); font-size: 1.3rem; }

.trust-strip { border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); background: var(--color-surface-soft); }
.trust-list { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; list-style: none; }
.trust-list li { padding: 18px 20px; border-right: 1px solid var(--color-border); color: var(--color-muted); font-size: 0.9rem; text-align: center; }
.trust-list li:last-child { border-right: 0; }
.trust-list strong { display: block; margin-bottom: 2px; color: var(--color-foreground); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.83rem; }

.section { padding: 104px 0; }
.section-tight { padding: 72px 0; }
.section-heading { max-width: 720px; margin-bottom: 40px; }
.section-heading p, .prose > p, .prose li { color: var(--color-muted); }
.section-heading p { margin-top: 18px; font-size: 1.08rem; }

.example-grid { display: grid; grid-template-columns: 1fr auto 1fr; align-items: stretch; gap: 16px; }
.example-card, .feature-card, .security-card, .purchase-card, .support-card { border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); box-shadow: var(--shadow-md); }
.example-card { padding: 24px; }
.example-card.bad-card { border-color: #6c3442; background: linear-gradient(180deg, var(--color-danger-surface), var(--color-surface)); }
.example-card.good-card { border-color: #277542; background: linear-gradient(180deg, #163829, var(--color-surface)); }
.example-card .label { margin-bottom: 24px; color: var(--color-muted-strong); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.example-card code { display: block; min-height: 76px; overflow-wrap: anywhere; color: var(--color-foreground); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9rem; }
.example-arrow { display: grid; min-width: 48px; place-items: center; color: var(--color-accent-strong); font-size: 1.6rem; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card { min-height: 208px; padding: 24px; transition: border-color var(--transition), background var(--transition), transform var(--transition); }
.feature-card:hover { border-color: #66809f; background: var(--color-surface-raised); transform: translateY(-2px); }
.feature-number { display: inline-flex; width: 32px; height: 32px; align-items: center; justify-content: center; margin-bottom: 24px; border: 1px solid var(--color-border); border-radius: 50%; color: var(--color-accent-strong); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.8rem; font-weight: 700; }
.feature-card p { margin-top: 12px; color: var(--color-muted); font-size: 0.94rem; }

.screenshot-frame { overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: #090e19; box-shadow: var(--shadow-md); }
.screenshot-frame img { width: 100%; }
.screenshot-caption { margin: 0; padding: 14px 18px; color: var(--color-muted-strong); font-size: 0.84rem; }

.check-list, .step-list { display: grid; gap: 20px; margin: 28px 0 0; padding: 0; list-style: none; }
.check-list li, .step-list li { position: relative; padding-left: 32px; color: var(--color-muted); }
.check-list li::before { position: absolute; top: 0.47em; left: 0; width: 12px; height: 7px; border-bottom: 2px solid var(--color-accent-strong); border-left: 2px solid var(--color-accent-strong); content: ""; transform: rotate(-45deg); }
.step-list { counter-reset: steps; }
.step-list li { counter-increment: steps; }
.step-list li::before { position: absolute; top: -1px; left: 0; width: 22px; height: 22px; border: 1px solid var(--color-border); border-radius: 50%; color: var(--color-accent-strong); content: counter(steps); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.72rem; font-weight: 700; line-height: 20px; text-align: center; }

.security-card { padding: 30px; background: linear-gradient(135deg, var(--color-surface), #162d28); }
.security-card p { max-width: 700px; margin-top: 14px; color: var(--color-muted); }

.faq-list { display: grid; gap: 10px; max-width: 820px; }
details { border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
summary { display: flex; min-height: 56px; align-items: center; justify-content: space-between; gap: 20px; padding: 14px 18px; cursor: pointer; color: var(--color-foreground); font-weight: 700; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { color: var(--color-accent-strong); content: "+"; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 1.2rem; }
details[open] summary::after { content: "−"; }
details p { margin: 0; padding: 0 18px 18px; color: var(--color-muted); }

.page-hero { padding: 84px 0 54px; border-bottom: 1px solid var(--color-border); background: linear-gradient(180deg, rgba(27, 35, 54, 0.52), rgba(15, 23, 42, 0)); }
.page-hero h1 { max-width: 840px; font-size: clamp(2.2rem, 5vw, 4rem); }
.page-hero p { max-width: 700px; margin-top: 20px; color: var(--color-muted); font-size: 1.1rem; }
.prose { max-width: 800px; padding: 70px 0 96px; }
.prose h2 { margin: 44px 0 14px; font-size: 1.45rem; }
.prose h3 { margin: 30px 0 10px; font-size: 1rem; }
.prose ul, .prose ol { display: grid; gap: 10px; margin: 0 0 20px; padding-left: 22px; }
.prose li::marker { color: var(--color-accent-strong); }
.prose code { padding: 2px 5px; border: 1px solid var(--color-border); border-radius: 4px; background: var(--color-surface); color: var(--color-accent-strong); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; }
.callout { margin: 28px 0; padding: 20px 22px; border-left: 3px solid var(--color-accent); background: var(--color-surface); color: var(--color-muted); }

.purchase-card { padding: 30px; background: linear-gradient(145deg, #1b2336, #163829); }
.price { margin: 18px 0 4px; color: var(--color-foreground); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 700; letter-spacing: -0.06em; }
.price-note { color: var(--color-muted); }
.support-card { padding: 30px; }
.support-card h2 { font-size: 1.65rem; }
.support-card p { margin-top: 14px; color: var(--color-muted); }

.site-footer { border-top: 1px solid var(--color-border); background: #0b1220; }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 32px; padding: 34px 0; }
.footer-brand { max-width: 340px; }
.footer-brand p { margin-top: 14px; color: var(--color-muted-strong); font-size: 0.86rem; }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(100px, auto)); gap: 8px 32px; align-content: start; }
.footer-links a { min-height: 36px; color: var(--color-muted); font-size: 0.9rem; }
.footer-meta { padding: 0 0 24px; color: var(--color-muted-strong); font-size: 0.78rem; }

@media (max-width: 900px) {
  .hero-grid, .split-grid, .purchase-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero { padding-top: 72px; }
  .hero-visual { max-width: 720px; }
  .feature-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .site-header-inner, .container { width: min(100% - 32px, var(--max-width)); }
  .site-header-inner { min-height: 68px; flex-wrap: wrap; gap: 4px 16px; padding: 10px 0; }
  .site-nav { width: 100%; justify-content: flex-start; overflow-x: auto; padding-bottom: 2px; }
  .site-nav a { flex: 0 0 auto; }
  .site-nav .nav-cta { margin-left: 0; }
  .hero, .section { padding: 68px 0; }
  .section-tight { padding: 52px 0; }
  .trust-list { grid-template-columns: repeat(2, 1fr); }
  .trust-list li:nth-child(2) { border-right: 0; }
  .trust-list li:nth-child(-n + 2) { border-bottom: 1px solid var(--color-border); }
  .example-grid { grid-template-columns: 1fr; }
  .example-arrow { min-height: 24px; transform: rotate(90deg); }
  .download-body { padding: 18px; }
  .footer-inner { flex-direction: column; padding-top: 28px; }
}

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