:root {
  --bg-base: #000000;
  --bg-surface: #0a0a0a;
  --bg-surface-elevated: #121212;
  --bg-surface-hover: #1a1a1a;
  
  --border-subtle: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.2);
  --border-focus: rgba(255, 255, 255, 0.45);
  
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-dim: #52525b;
  
  --font-sans: 'Geist', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Geist Mono', 'JetBrains Mono', monospace;
  
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
  
  --transition: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.55;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-base);
  position: relative;
  overflow-x: hidden;
}

/* Smooth Atmospheric Ambient Background (No Grid) */
.background-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background: 
    radial-gradient(circle at 50% 12%, rgba(255, 255, 255, 0.05) 0%, transparent 55%),
    radial-gradient(circle at 20% 60%, rgba(255, 255, 255, 0.02) 0%, transparent 40%),
    radial-gradient(circle at 80% 85%, rgba(255, 255, 255, 0.02) 0%, transparent 45%),
    #000000;
}

/* Layout Container */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* Typography Helpers */
.font-mono {
  font-family: var(--font-mono);
}

.text-link {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--border-strong);
  transition: text-decoration-color var(--transition);
}

.text-link:hover {
  text-decoration-color: #ffffff;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background-color: rgba(0, 0, 0, 0.82);
  border-bottom: 1px solid var(--border-subtle);
}

.header-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon-wrapper {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background-color: #111;
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

.brand-icon {
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.4px;
  color: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-links a:hover {
  color: #ffffff;
}

.icon-external {
  opacity: 0.6;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* High-Contrast B&W Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
}

.btn-lg {
  padding: 0.75rem 1.45rem;
  font-size: 0.95rem;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background-color: #ffffff;
  color: #000000;
  border-color: #ffffff;
  box-shadow: 0 1px 3px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  background-color: #e4e4e7;
  border-color: #e4e4e7;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.25);
}

.btn-secondary {
  background-color: #0d0d0d;
  color: #ffffff;
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: #171717;
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
  border-color: var(--border-subtle);
}

.btn-ghost:hover {
  background-color: #111;
  color: #ffffff;
  border-color: var(--border-strong);
}

/* Hero Section */
.hero-section {
  padding: 5.5rem 0 4.5rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Prominent Emblem Logo in Hero */
.hero-logo-badge {
  width: 76px;
  height: 76px;
  border-radius: var(--radius-lg);
  background-color: #0d0d0d;
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 35px rgba(255, 255, 255, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transition: transform var(--transition), border-color var(--transition);
}

.hero-logo-badge:hover {
  transform: scale(1.05);
  border-color: var(--border-focus);
  box-shadow: 0 0 45px rgba(255, 255, 255, 0.16);
}

.hero-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
}

.release-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.95rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
}

.status-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #ffffff;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
}

.hero-heading {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -1.4px;
  line-height: 1.15;
  max-width: 860px;
  margin-bottom: 1.25rem;
  color: #fff;
}

.white-highlight {
  background: linear-gradient(180deg, #ffffff 40%, #a1a1aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 660px;
  margin-bottom: 2.25rem;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.meta-strip {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.75rem;
  gap: 2rem;
  flex-wrap: wrap;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

.meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.meta-value {
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: #ffffff;
}

.meta-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-top: 0.15rem;
}

.meta-divider {
  width: 1px;
  height: 24px;
  background-color: var(--border-subtle);
}

/* Sections */
.section {
  padding: 5rem 0;
  position: relative;
  z-index: 1;
}

.section-heading {
  margin-bottom: 3.5rem;
  text-align: center;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  display: inline-block;
  margin-bottom: 0.5rem;
  opacity: 0.8;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.6px;
  margin-bottom: 0.5rem;
  color: #ffffff;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.02rem;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Monochrome Cards */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-surface-elevated);
}

/* Downloads Grid */
.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
  max-width: 860px;
  margin: 0 auto;
}

.download-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: center;
}

.featured-card {
  border-color: var(--border-strong);
  background-color: #0c0c0c;
  box-shadow: 0 0 35px rgba(255, 255, 255, 0.04);
}

.featured-card:hover {
  border-color: var(--border-focus);
}

.card-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 1.5rem;
}

/* Badges */
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.6rem;
}

.badge-white {
  background-color: #ffffff;
  color: #000000;
}

.badge-subtle {
  background-color: #171717;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #ffffff;
}

.card-subtitle {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.file-details {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.1rem 0;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.file-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.file-row .label {
  color: var(--text-muted);
}

.file-row .value {
  color: var(--text-primary);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
  max-width: 1040px;
  margin: 0 auto;
}

.feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  margin: 0 auto 1.25rem;
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.2px;
  margin-bottom: 0.6rem;
  color: #ffffff;
  text-align: center;
}

.feature-text {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1.4rem;
  flex-grow: 1;
  text-align: center;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #ffffff;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: opacity var(--transition);
  margin: 0 auto;
}

.card-link:hover {
  opacity: 0.75;
}

/* Steps Grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
  max-width: 1040px;
  margin: 0 auto;
}

.step-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 auto 0.8rem;
  background-color: #121212;
  border: 1px solid var(--border-subtle);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #ffffff;
  text-align: center;
}

.step-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  text-align: center;
}

.step-description code {
  font-family: var(--font-mono);
  background-color: rgba(255, 255, 255, 0.08);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-xs);
  font-size: 0.85rem;
  color: #fff;
}

/* Dependencies Subgrid */
.deps-header {
  margin-top: 4.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

.deps-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #ffffff;
  margin-bottom: 0.35rem;
}

.deps-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto;
}

.dependencies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.5rem;
  max-width: 1040px;
  margin: 0 auto;
}

.dep-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: space-between;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.8rem 1.6rem;
  transition: all var(--transition);
}

.dep-card:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-surface-elevated);
  transform: translateY(-2px);
}

.dep-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  margin: 0 auto 0.85rem;
  width: fit-content;
}

.dep-tag-required {
  background-color: #ffffff;
  color: #000000;
}

.dep-tag-recommended {
  background-color: #1a1a1a;
  color: #ffffff;
  border: 1px solid var(--border-strong);
}

.dep-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.2px;
  margin-bottom: 0.4rem;
  text-align: center;
}

.dep-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.4rem;
  flex-grow: 1;
  text-align: center;
}

/* Path Box & OS Switcher */
.path-box-container {
  margin-top: 1.25rem;
  background-color: #0c0c0c;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  width: 100%;
}

.path-box-tabs {
  display: flex;
  background-color: #070707;
  border-bottom: 1px solid var(--border-subtle);
  justify-content: center;
}

.path-tab {
  background: transparent;
  border: none;
  border-right: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: all var(--transition);
}

.path-tab:last-child {
  border-right: none;
}

.path-tab:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.03);
}

.path-tab.active {
  color: #ffffff;
  background-color: #0c0c0c;
  font-weight: 600;
}

.path-box-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  gap: 0.75rem;
}

.path-code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #e4e4e7;
  word-break: break-all;
  user-select: all;
  text-align: left;
}

.btn-copy {
  background: #18181b;
  border: 1px solid var(--border-subtle);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-xs);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
  transition: all var(--transition);
}

.btn-copy:hover {
  background: #27272a;
  border-color: var(--border-strong);
}

.btn-copy.copied {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

/* FAQ */
.faq-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.5rem;
  transition: border-color var(--transition);
}

.faq-item[open] {
  border-color: var(--border-strong);
}

.faq-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 0.98rem;
  color: #ffffff;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-arrow {
  color: var(--text-muted);
  transition: transform var(--transition);
}

.faq-item[open] .faq-arrow {
  transform: rotate(180deg);
}

.faq-body {
  margin-top: 0.85rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* CTA Banner */
.cta-banner {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: center;
  gap: 1.5rem;
  max-width: 880px;
  margin: 0 auto;
  box-shadow: 0 0 45px rgba(255, 255, 255, 0.03);
}

.cta-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 0.4rem;
  color: #ffffff;
  text-align: center;
}

.cta-text {
  color: var(--text-secondary);
  font-size: 0.98rem;
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  line-height: 1.6;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background-color: #050505;
  padding: 3.5rem 0 2rem;
  position: relative;
  z-index: 1;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 3rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.footer-primary {
  max-width: 340px;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.85rem;
  line-height: 1.55;
}

.footer-nav {
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.8px;
  margin-bottom: 0.35rem;
}

.footer-col a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.5rem;
  color: var(--text-dim);
  font-size: 0.82rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-section {
    padding: 4rem 0 3rem;
  }
  .meta-strip {
    gap: 1.2rem;
    padding: 0.85rem 1.2rem;
  }
  .meta-divider {
    display: none;
  }
  .cta-banner {
    padding: 2rem 1.5rem;
  }
}