/* DoStack Website — Apple Glassmorphic Style */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --apple-blue: #007AFF;
  --apple-green: #34C759;
  --apple-orange: #FF9500;
  --apple-red: #FF3B30;
  --apple-purple: #AF52DE;
  --apple-pink: #FF2D55;
  --apple-teal: #5AC8FA;
  --apple-gray: #8E8E93;

  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-tertiary: #aeaeb2;
  --border-subtle: rgba(0,0,0,0.06);
  --border-strong: rgba(0,0,0,0.1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
}

* { margin:0; padding:0; box-sizing:border-box; }

html { scroll-behavior:smooth; -webkit-font-smoothing:antialiased; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
}

/* Animated gradient background */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(0,122,255,0.06) 0%, transparent 50%),
    radial-gradient(ellipse 60% 80% at 80% 80%, rgba(175,82,222,0.04) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(255,149,0,0.03) 0%, transparent 60%);
  animation: bgShift 20s ease-in-out infinite alternate;
}
@keyframes bgShift {
  0% { opacity: 0.8; }
  100% { opacity: 1; }
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 28px; }

/* ===== Navigation ===== */
.nav {
  position: fixed; top: 16px; left: 50%; transform: translateX(-50%);
  z-index: 100; width: calc(100% - 48px); max-width: 1060px;
  background: rgba(255,255,255,0.72);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 10px 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}
.nav:hover {
  background: rgba(255,255,255,0.82);
  box-shadow: var(--shadow-md);
}
.nav-inner { display:flex; align-items:center; justify-content:space-between; }
.nav-logo {
  font-size: 17px; font-weight: 800; color: var(--text-primary);
  text-decoration: none; display: flex; align-items: center; gap: 8px;
  letter-spacing: -0.3px;
}
.nav-logo .logo-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(135deg, var(--apple-blue), var(--apple-purple));
}
.nav-links { display:flex; gap: 8px; align-items:center; }
.nav-links a {
  color: var(--text-secondary); text-decoration: none;
  font-size: 13px; font-weight: 500; padding: 6px 14px;
  border-radius: 20px; transition: all 0.2s;
}
.nav-links a:hover { background: rgba(0,0,0,0.04); color: var(--text-primary); }
.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin-left: 4px;
  padding: 3px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: rgba(255,255,255,0.54);
}
.language-switch a,
.language-switch span {
  margin: 0;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}
.language-switch .active {
  background: rgba(0,122,255,0.12);
  color: var(--apple-blue);
}
.nav-cta {
  background: var(--apple-blue) !important;
  color: #fff !important; font-weight: 600 !important;
}

/* ===== Hero ===== */
.hero { padding: 160px 0 100px; text-align: center; }
.hero .badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 16px; border-radius: 20px;
  background: rgba(0,122,255,0.08); color: var(--apple-blue);
  font-size: 12px; font-weight: 600; margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(36px, 5.5vw, 56px); font-weight: 800;
  letter-spacing: -1.5px; line-height: 1.1; margin-bottom: 20px;
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--apple-blue), var(--apple-purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 17px; color: var(--text-secondary); max-width: 520px;
  margin: 0 auto 36px; line-height: 1.6; font-weight: 400;
}
.hero-btns { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 28px; border-radius: 28px;
  font-size: 14px; font-weight: 600; text-decoration: none;
  cursor: pointer; border: none; transition: all 0.25s cubic-bezier(0.25, 1, 0.5, 1);
  letter-spacing: -0.2px;
}
.btn-primary {
  background: var(--apple-blue); color: #fff;
  box-shadow: 0 4px 16px rgba(0,122,255,0.25);
}
.btn-primary:hover {
  background: #0066d6; transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,122,255,0.35);
}
.btn-outline {
  background: rgba(255,255,255,0.64);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  color: var(--text-primary); border: 1px solid var(--border-strong);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.8);
  transform: translateY(-1px);
}

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section-label {
  text-align: center; font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--apple-blue); margin-bottom: 12px;
}
.section h2 {
  font-size: 34px; font-weight: 800; text-align: center;
  margin-bottom: 12px; letter-spacing: -0.8px;
}
.section > .container > p.subtitle {
  text-align: center; color: var(--text-secondary);
  max-width: 480px; margin: 0 auto 56px; font-size: 15px;
}

/* ===== Feature Cards ===== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}
.feature-card {
  background: rgba(255,255,255,0.64);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px; transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
  cursor: default;
}
.feature-card:hover {
  background: rgba(255,255,255,0.82);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}
.feature-icon {
  width: 44px; height: 44px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
}
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; letter-spacing: -0.3px; }
.feature-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* Icon gradient backgrounds */
.fi-shield { background: linear-gradient(135deg, rgba(0,122,255,0.12), rgba(0,122,255,0.06)); }
.fi-desktop { background: linear-gradient(135deg, rgba(52,199,89,0.12), rgba(52,199,89,0.06)); }
.fi-kanban { background: linear-gradient(135deg, rgba(175,82,222,0.12), rgba(175,82,222,0.06)); }
.fi-island { background: linear-gradient(135deg, rgba(255,149,0,0.12), rgba(255,149,0,0.06)); }
.fi-notes { background: linear-gradient(135deg, rgba(255,45,85,0.12), rgba(255,45,85,0.06)); }
.fi-search { background: linear-gradient(135deg, rgba(90,200,250,0.12), rgba(90,200,250,0.06)); }

/* ===== Pricing ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px; align-items: start;
}
.pricing-card {
  background: rgba(255,255,255,0.64);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 36px; text-align: center; position: relative;
  transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}
.pricing-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.pricing-card.featured {
  border-color: rgba(0,122,255,0.2);
  background: rgba(255,255,255,0.78);
  box-shadow: 0 8px 40px rgba(0,122,255,0.1);
}
.pricing-badge {
  position: absolute; top: 16px; right: 16px;
  background: var(--apple-blue); color: #fff;
  font-size: 11px; font-weight: 700; padding: 4px 12px;
  border-radius: 12px; letter-spacing: 0.2px;
}
.pricing-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.pricing-price { font-size: 40px; font-weight: 800; margin: 20px 0; letter-spacing: -1.5px; }
.pricing-price span { font-size: 14px; color: var(--text-secondary); font-weight: 500; }
.pricing-features { list-style: none; text-align: left; margin: 28px 0; }
.pricing-features li {
  padding: 8px 0; font-size: 13px; color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
  display: flex; align-items: center; gap: 8px;
}
.pricing-features li::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--apple-green); flex-shrink: 0;
}
.pricing-features li.na { color: var(--text-tertiary); }
.pricing-features li.na::before { background: var(--border-strong); }

/* ===== Download ===== */
.download-card {
  background: rgba(255,255,255,0.64);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px 32px; display: flex; align-items: center;
  gap: 20px; max-width: 520px; margin: 12px auto;
  transition: all 0.3s;
}
.download-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.download-icon {
  width: 52px; height: 52px; border-radius: 16px;
  background: linear-gradient(135deg, rgba(0,122,255,0.1), rgba(175,82,222,0.1));
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; flex-shrink: 0;
}
.download-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.download-card p { font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
.download-meta {
  margin-top: 8px;
  color: var(--text-primary) !important;
  font-weight: 500;
}


.edition-table-wrap {
  max-width: 920px;
  margin: 40px auto 0;
  padding: 28px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.6);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  box-shadow: var(--shadow-md);
}
.edition-table-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  margin-bottom: 18px;
}
.edition-table-head .section-label { text-align: left; margin-bottom: 8px; }
.edition-table-head h2 { text-align: left; margin: 0; font-size: 24px; }
.edition-table-head p {
  max-width: 340px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.7;
}
.edition-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  font-size: 13px;
}
.edition-table th,
.edition-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
  text-align: left;
}
.edition-table th {
  color: var(--text-primary);
  font-size: 12px;
  background: rgba(0,122,255,0.06);
}
.edition-table td:first-child {
  width: 118px;
  color: var(--text-primary);
  font-weight: 700;
}
.edition-table td:not(:first-child) { color: var(--text-secondary); }
.edition-table code {
  color: var(--apple-blue);
  background: rgba(0,122,255,0.07);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 12px;
}
.download-integrity-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}
.download-integrity-grid div {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.44);
  padding: 12px 14px;
}
.download-integrity-grid strong {
  display: block;
  color: var(--text-primary);
  font-size: 12px;
  margin-bottom: 5px;
}
.download-integrity-grid span {
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.5;
}

.notice {
  max-width: 760px;
  margin: 36px auto 0;
  padding: 22px 26px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.56);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
}
.notice strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-size: 14px;
}
.notice p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.7;
}

/* ===== Changelog ===== */
.changelog { max-width: 560px; margin: 0 auto; }
.changelog-entry {
  background: rgba(255,255,255,0.5);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm); padding: 16px 20px; margin-bottom: 8px;
}
.changelog-entry h4 { font-size: 14px; margin-bottom: 4px; }
.changelog-entry .ver {
  background: var(--apple-blue); color: #fff;
  font-size: 10px; font-weight: 700; padding: 2px 8px;
  border-radius: 8px; margin-right: 8px;
}
.changelog-entry p { font-size: 12px; color: var(--text-secondary); }

/* ===== Docs content ===== */
.doc-content { max-width: 680px; margin: 0 auto; }
.doc-content h3 { font-size: 19px; font-weight: 700; margin: 32px 0 12px; letter-spacing: -0.4px; }
.doc-content p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.doc-content code {
  background: rgba(0,122,255,0.06); color: var(--apple-blue);
  padding: 2px 8px; border-radius: 5px; font-size: 13px;
  font-family: 'SF Mono', 'Fira Code', monospace;
}
.doc-table {
  width: 100%; border-collapse: collapse; font-size: 14px;
}
.doc-table td {
  padding: 10px 0; border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}
.doc-table td:first-child { padding-right: 20px; }

/* ===== Footer ===== */
.footer {
  padding: 48px 0 36px; text-align: center;
  border-top: 1px solid var(--border-subtle);
  margin-top: 60px;
}
.footer p { font-size: 12px; color: var(--text-tertiary); margin-bottom: 8px; }
.footer a { color: var(--text-secondary); font-size: 12px; margin: 0 10px; text-decoration: none; }
.footer a:hover { color: var(--apple-blue); }
.footer-links,
.footer-legal {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 18px;
}
.footer-legal {
  margin-top: 10px;
  color: var(--text-tertiary);
  font-size: 12px;
}

/* ===== System Requirements Box ===== */
.sysreq {
  background: rgba(255,255,255,0.5);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 32px; max-width: 420px; margin: 0 auto;
  text-align: center; font-size: 13px; color: var(--text-secondary);
  line-height: 2;
}
.sysreq strong { color: var(--text-primary); }

/* ===== Philosophy Section ===== */
.philosophy {
  background: rgba(255,255,255,0.5);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px; max-width: 680px; margin: 0 auto;
  text-align: center;
}
.philosophy p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }
.philosophy strong { color: var(--text-primary); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav {
    width: calc(100% - 24px); top: 8px;
    border-radius: var(--radius-md); padding: 8px 16px;
  }
  .nav-links { gap: 4px; }
  .nav-links a { font-size: 11px; padding: 4px 9px; }
  .language-switch { margin-left: 0; }
  .language-switch a,
  .language-switch span { font-size: 11px; padding: 3px 7px; }
  .hero { padding: 120px 0 60px; }
  .hero h1 { font-size: 30px; }
  .section { padding: 48px 0; }
  .section h2 { font-size: 26px; }
  .features { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .download-card {
    align-items: flex-start;
    flex-direction: column;
    max-width: 100%;
  }
  .download-card .btn { width: 100%; justify-content: center; }
  .edition-table-wrap { padding: 20px; }
  .edition-table-head { display: block; }
  .edition-table-head p { max-width: none; margin-top: 10px; }
  .edition-table { display: block; overflow-x: auto; white-space: nowrap; }
  .download-integrity-grid { grid-template-columns: 1fr; }
  .carousel-slide figcaption { display: block; }
  .carousel-slide figcaption span { display: block; margin-top: 6px; text-align: left; }
  .philosophy { padding: 28px 20px; margin: 0 16px; }
  .container { padding: 0 16px; }
  .hero-mockup { max-width: 640px; margin: 40px auto 0; }
}



/* ===== Screenshot Carousel ===== */
.screenshot-carousel {
  max-width: 960px;
  margin: 52px auto 0;
}
.carousel-viewport {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  border-radius: 26px;
  background: rgba(255,255,255,0.58);
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.18);
  aspect-ratio: 2881 / 1717;
}
.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateX(16px) scale(0.985);
  transition: opacity 0.55s cubic-bezier(0.16, 1, 0.3, 1), transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
}
.carousel-slide.active {
  opacity: 1;
  transform: translateX(0) scale(1);
  z-index: 1;
}
.carousel-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.carousel-slide figcaption {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 16px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 16px;
  background: rgba(14, 18, 28, 0.58);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  color: rgba(255,255,255,0.72);
  font-size: 13px;
  text-align: left;
}
.carousel-slide figcaption strong {
  flex: 0 0 auto;
  color: #fff;
  font-size: 14px;
}
.carousel-slide figcaption span { text-align: right; }
.carousel-controls {
  display: inline-flex;
  gap: 8px;
  margin-top: 16px;
  padding: 6px;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  background: rgba(255,255,255,0.64);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
}
.carousel-controls button {
  border: 0;
  border-radius: 999px;
  padding: 8px 16px;
  background: transparent;
  color: var(--text-secondary);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.carousel-controls button.active {
  background: var(--apple-blue);
  color: #fff;
  box-shadow: 0 6px 16px rgba(0,122,255,0.24);
}
/* ===== Product Preview ===== */
.product-preview {
  max-width: 920px;
  margin: 48px auto 0;
}
.product-preview img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 24px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.18);
}
.product-preview figcaption {
  margin-top: 12px;
  color: var(--text-tertiary);
  font-size: 11px;
  font-style: italic;
  text-align: center;
}
/* ===== App Mockup ===== */
.hero-mockup {
  max-width: 720px; margin: 48px auto 0;
}
.mockup-window {
  background: rgba(28,28,30,0.85);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px; overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.05);
}
.mockup-titlebar {
  display: flex; gap: 6px; padding: 12px 16px;
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.mockup-dot {
  width: 10px; height: 10px; border-radius: 50%; opacity: 0.7;
}
.mockup-body {
  display: flex; gap: 6px; padding: 12px; aspect-ratio: 16/9; min-height: 240px;
}
.mockup-col {
  display: flex; flex-direction: column; gap: 6px;
  border-radius: 10px; padding: 6px;
}
.mockup-col-left { flex: 1; background: rgba(255,255,255,0.02); }
.mockup-col-mid { flex: 2; }
.mockup-col-right { flex: 2; }
.mockup-item {
  border-radius: 6px;
}
.mockup-card {
  border-radius: 8px; border: 1px solid rgba(255,255,255,0.04);
}
.mockup-caption {
  text-align: center; font-size: 11px; color: var(--text-tertiary);
  margin-top: 12px; font-style: italic;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #1c1c1e;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --text-tertiary: #6e6e73;
    --border-subtle: rgba(255,255,255,0.08);
    --border-strong: rgba(255,255,255,0.12);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
  }
  .nav { background: rgba(28,28,30,0.72); }
  .nav:hover { background: rgba(28,28,30,0.85); }
  .feature-card { background: rgba(28,28,30,0.64); }
  .feature-card:hover { background: rgba(28,28,30,0.82); }
  .pricing-card { background: rgba(28,28,30,0.64); }
  .pricing-card.featured { background: rgba(28,28,30,0.78); }
  .download-card { background: rgba(28,28,30,0.64); }
  .notice { background: rgba(28,28,30,0.55); }
  .edition-table-wrap { background: rgba(28,28,30,0.58); }
  .download-integrity-grid div { background: rgba(28,28,30,0.42); }
  .philosophy { background: rgba(28,28,30,0.55); }
  .changelog-entry { background: rgba(28,28,30,0.5); }
  .sysreq { background: rgba(28,28,30,0.5); }
  .btn-outline { background: rgba(28,28,30,0.64); }
  .btn-outline:hover { background: rgba(28,28,30,0.85); }
  .doc-content code { background: rgba(0,122,255,0.12); }
  body::before {
    background:
      radial-gradient(ellipse 80% 60% at 20% 10%, rgba(0,122,255,0.08) 0%, transparent 50%),
      radial-gradient(ellipse 60% 80% at 80% 80%, rgba(175,82,222,0.06) 0%, transparent 50%),
      radial-gradient(ellipse 50% 50% at 50% 50%, rgba(255,149,0,0.04) 0%, transparent 60%);
  }
}