@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #09090b;
  --bg-subtle: #111115;
  --card-bg: rgba(24, 24, 28, 0.65);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-border-hover: rgba(6, 182, 212, 0.35);
  --text: #f4f4f5;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;
  
  --primary: #06b6d4;
  --primary-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(6, 182, 212, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 25%, rgba(139, 92, 246, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
}

/* Typography & Links */
a {
  color: inherit;
  text-decoration: none;
}

/* Glassmorphism Classes */
.glass-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(9, 9, 11, 0.75);
  border-bottom: 1px solid var(--card-border);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Nav */
.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links a {
  transition: color 0.2s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
  font-family: inherit;
}

.btn-lang {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.btn-lang:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(6, 182, 212, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--card-border);
  color: var(--text);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
}

.btn-store {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #fff;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.btn-store:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 164, 239, 0.6);
  box-shadow: 0 4px 20px rgba(0, 164, 239, 0.25);
  transform: translateY(-2px);
  color: #fff;
}

.file-item-highlight {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.08) 0%, rgba(59, 130, 246, 0.05) 100%) !important;
  border: 1px solid rgba(6, 182, 212, 0.4) !important;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.08);
}

.file-item-highlight:hover {
  border-color: rgba(6, 182, 212, 0.7) !important;
}

.store-badge {
  border-color: rgba(0, 164, 239, 0.3) !important;
}

.store-badge:hover {
  border-color: rgba(0, 164, 239, 0.7) !important;
  background: rgba(0, 164, 239, 0.1) !important;
}

/* Hero Section */
.hero {
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  color: var(--primary);
  font-size: 0.825rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 24px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 740px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero-meta {
  font-size: 0.85rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* OS Platform Selector */
.os-selector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.os-selector-label {
  font-weight: 500;
  color: var(--text-dim);
}

.os-badges {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.os-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  font-family: inherit;
  text-decoration: none;
}

.os-badge:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(6, 182, 212, 0.4);
  color: #fff;
  transform: translateY(-1px);
}

.os-badge.active {
  background: rgba(6, 182, 212, 0.12);
  border-color: rgba(6, 182, 212, 0.5);
  color: var(--primary);
  font-weight: 600;
}

/* Real App Interactive Showcase */
.showcase-container {
  margin: 50px auto 0;
  max-width: 1140px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}

/* Showcase Navigation Tabs */
.showcase-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 6px;
  background: rgba(18, 20, 29, 0.7);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-full);
  margin: 0 auto;
  max-width: 100%;
}

.showcase-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  user-select: none;
}

.showcase-tab:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.showcase-tab.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.25) 0%, rgba(168, 85, 247, 0.25) 100%);
  border-color: rgba(6, 182, 212, 0.4);
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.25);
  font-weight: 600;
}

.showcase-tab svg {
  color: var(--primary);
  flex-shrink: 0;
}

.showcase-tab.active svg {
  color: #38bdf8;
}

/* App Window with Real Screenshot */
.app-window.real-window {
  background: #090a0f;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 
    0 25px 70px -15px rgba(0, 0, 0, 0.9),
    0 0 100px -20px rgba(6, 182, 212, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}

.app-window.real-window:hover {
  box-shadow: 
    0 30px 80px -15px rgba(0, 0, 0, 0.95),
    0 0 120px -15px rgba(6, 182, 212, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.window-header {
  height: 42px;
  background: linear-gradient(180deg, #161822 0%, #10121a 100%);
  display: flex;
  align-items: center;
  padding: 0 18px;
  gap: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.window-dots {
  display: flex;
  gap: 7px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.window-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-left: auto;
  margin-right: auto;
  letter-spacing: 0.02em;
}

.window-badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 3px 9px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.window-image-wrapper {
  position: relative;
  background: #090a0f;
  overflow: hidden;
  width: 100%;
}

.showcase-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1), transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 1;
  transform: scale(1);
}

.showcase-image.fading {
  opacity: 0.2;
  transform: scale(0.995);
}

.image-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(9, 10, 15, 0.92) 40%, #090a0f 100%);
  padding: 24px 24px 16px;
  font-size: 0.875rem;
  color: #e2e8f0;
  text-align: center;
  font-weight: 500;
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  pointer-events: none;
  transition: opacity 0.3s ease;
}

/* Metrics Section */
.metrics-section {
  padding: 80px 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.metric-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  backdrop-filter: blur(12px);
  transition: transform 0.2s, border-color 0.2s;
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-border-hover);
}

.metric-val {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.metric-sub {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Features Grid */
.features-section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(16px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-border-hover);
  box-shadow: 0 12px 36px -8px rgba(6, 182, 212, 0.15);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  color: var(--primary);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.6;
}

/* Visual Deep Dives */
.visual-deep-dives {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-top: 64px;
}

.deep-dive-card {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 40px;
  align-items: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 50px -15px rgba(0, 0, 0, 0.7);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.deep-dive-card:hover {
  border-color: var(--card-border-hover);
  box-shadow: 0 25px 60px -15px rgba(6, 182, 212, 0.15);
}

.deep-dive-card.reverse {
  grid-template-columns: 1.35fr 1fr;
}

.deep-dive-card.reverse .deep-dive-info {
  order: 2;
}

.deep-dive-card.reverse .deep-dive-media {
  order: 1;
}

.deep-dive-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.deep-dive-tag {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.deep-dive-tag.green {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.3);
  color: #10b981;
}

.deep-dive-info h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 800;
  color: var(--text);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.deep-dive-info p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.deep-dive-info code {
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  color: #38bdf8;
}

.deep-dive-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0;
  margin: 4px 0 0;
}

.deep-dive-list li {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.deep-dive-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 40px -10px rgba(0, 0, 0, 0.85);
  background: #090a0f;
  transition: transform 0.3s ease;
}

.deep-dive-media:hover {
  transform: scale(1.015);
}

.deep-dive-media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

@media (max-width: 900px) {
  .deep-dive-card, .deep-dive-card.reverse {
    grid-template-columns: 1fr;
    padding: 24px;
    gap: 24px;
  }
  .deep-dive-card.reverse .deep-dive-info { order: 1; }
  .deep-dive-card.reverse .deep-dive-media { order: 2; }
}
.comparison-section {
  padding: 80px 0;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  backdrop-filter: blur(16px);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
}

.comparison-table th, .comparison-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--card-border);
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.02);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table td.highlight {
  background: rgba(6, 182, 212, 0.05);
  color: #fff;
  font-weight: 600;
}

/* CTA Download Banner */
.cta-section {
  padding: 80px 0 120px;
}

.cta-box {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 80px -20px rgba(6, 182, 212, 0.25);
}

.cta-box h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.cta-box p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 36px;
}

/* Installation & Setup Guide Section */
.install-section {
  padding: 20px 0 100px;
  position: relative;
}

.install-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 36px;
}

.install-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.install-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  font-family: inherit;
}

.install-tab-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(6, 182, 212, 0.4);
  color: #fff;
  transform: translateY(-1px);
}

.install-tab-btn.active {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 24px rgba(6, 182, 212, 0.3);
}

.install-panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

.install-panel.active {
  display: block;
}

.install-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 840px) {
  .install-grid {
    grid-template-columns: 1fr;
  }
}

.install-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.install-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #fff;
}

.file-item {
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  transition: border-color 0.2s;
}

.file-item:last-child {
  margin-bottom: 0;
}

.file-item:hover {
  border-color: rgba(6, 182, 212, 0.3);
}

.file-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.file-item-name {
  font-family: var(--font-mono);
  font-size: 0.925rem;
  font-weight: 700;
  color: var(--primary);
}

.file-badge-rec {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.file-badge-opt {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-dim);
}

.file-item-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.15);
  color: var(--primary);
  border: 1px solid rgba(6, 182, 212, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: #fff;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.install-callout {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.25);
  font-size: 0.825rem;
  color: #fcd34d;
  line-height: 1.5;
}

.install-callout code {
  background: rgba(0, 0, 0, 0.4);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  color: #fff;
}

/* Footer */
footer {
  border-top: 1px solid var(--card-border);
  padding: 40px 0;
  font-size: 0.875rem;
  color: var(--text-dim);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a:hover {
  color: #fff;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .window-body {
    grid-template-columns: 1fr;
  }
  .mock-sidebar {
    display: none;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Sponsor / Support Section
   ========================================================================== */
.sponsor-section {
  padding: 100px 0;
  position: relative;
  border-top: 1px solid var(--card-border);
}

.sponsor-badge {
  background: rgba(234, 74, 170, 0.1);
  border-color: rgba(234, 74, 170, 0.3);
  color: #ea4aaa;
}

.sponsor-gradient {
  background: linear-gradient(135deg, #ea4aaa 0%, #f43f5e 50%, #fb923c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
  max-width: 980px;
  margin: 48px auto 0;
}

.sponsor-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.sponsor-card:hover {
  transform: translateY(-6px);
  border-color: rgba(234, 74, 170, 0.4);
  box-shadow: 0 16px 40px rgba(234, 74, 170, 0.12);
}

.sponsor-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.sponsor-badge-flag {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--card-border);
  color: var(--text-muted);
}

.sponsor-badge-flag.momo-flag {
  background: rgba(216, 45, 139, 0.12);
  border-color: rgba(216, 45, 139, 0.3);
  color: #ff60b0;
}

.sponsor-card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kofi-icon-glow {
  background: rgba(255, 94, 91, 0.12);
  color: #ff5e5b;
}

.momo-icon-glow {
  background: rgba(216, 45, 139, 0.12);
  color: #d82d8b;
}

.sponsor-method-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.sponsor-method-sub {
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.sponsor-benefit-text {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
  flex-grow: 1;
}

.btn-kofi {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #ff5e5b;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.975rem;
  padding: 13px 22px;
  border-radius: var(--radius-md);
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 16px rgba(255, 94, 91, 0.35);
}

.btn-kofi:hover {
  background: #e04a47;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 94, 91, 0.5);
  color: #fff;
}

.sponsor-url-tag {
  display: block;
  text-align: center;
  font-size: 0.825rem;
  color: var(--text-dim);
  margin-top: 12px;
  font-family: var(--font-mono);
}

.momo-content-flex {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 6px;
}

.momo-qr-frame {
  flex-shrink: 0;
  background: #fff;
  padding: 6px;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  transition: transform 0.2s ease;
}

.momo-qr-frame:hover {
  transform: scale(1.03);
}

.momo-qr-image {
  width: 130px;
  height: auto;
  display: block;
  border-radius: 8px;
}

.momo-details {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.momo-row {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.momo-label {
  font-size: 0.775rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.momo-val {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.momo-tip-box {
  margin-top: 4px;
  font-size: 0.775rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  line-height: 1.45;
}

@media (max-width: 580px) {
  .momo-content-flex {
    flex-direction: column;
    text-align: center;
  }
  .momo-qr-image {
    width: 170px;
  }
}