@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@500;600;700;800&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  /* Color Palette - Elegant Soft Light Theme */
  --bg-base: #f4f5f7;       /* Off-white, not harsh */
  --bg-surface: #ffffff;    /* Pure white for cards */
  --bg-panel: #fdfdfe;      /* Slightly warm white */
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  
  --border-subtle: #e2e8f0;
  --border-focus: #cbd5e1;
  
  --text-primary: #0f172a;  /* Deep slate for high contrast but not pure black */
  --text-secondary: #475569; /* Muted slate */
  --text-tertiary: #64748b;
  
  --accent-mint: #10b981;    /* Vibrant emerald/mint */
  --accent-mint-dim: rgba(16, 185, 129, 0.1);
  --accent-blue: #0284c7;    /* Deep sky blue */
  --accent-blue-dim: rgba(2, 132, 199, 0.1);

  /* Typography - Official Zorin OS Website Stack */
  --font-display: 'Space Grotesk', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout & Shadows */
  --container-width: 1400px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* Modern soft shadows */
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 16px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.08);
  --shadow-float: 0 25px 50px rgba(15, 23, 42, 0.12);
  
  /* Background Texture (Casillas amplias y micropuntos sutiles - Modo Claro) */
  --grid-line: rgba(15, 23, 42, 0.02);
  --grid-dot: rgba(15, 23, 42, 0.05);
  
  --transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

[data-theme="dark"] {
  --bg-base: #0f0f0f;       /* True neutral dark black matching user sample */
  --bg-surface: #181818;    /* Sleek neutral dark gray for cards & panels */
  --bg-panel: #141414;
  --bg-card: #181818;
  --bg-card-hover: #222222;
  
  --border-subtle: #262626; /* Neutral borders, no blue tint */
  --border-focus: #383838;
  
  --text-primary: #f5f5f5;  /* Clean off-white text */
  --text-secondary: #a3a3a3; /* Neutral gray */
  --text-tertiary: #737373;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.6);
  --shadow-float: 0 25px 50px rgba(0, 0, 0, 0.7);

  /* Background Texture (Casillas amplias y micropuntos sutiles - Modo Oscuro) */
  --grid-line: rgba(255, 255, 255, 0.02);
  --grid-dot: rgba(255, 255, 255, 0.07);
}

[data-theme="dark"] .btn-primary {
  background: #ffffff !important;
  color: #0f0f0f !important;
}

[data-theme="dark"] .btn-primary:hover {
  background: var(--accent-blue) !important;
  color: #ffffff !important;
}

[data-theme="dark"] .btn-copy-md5 {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

[data-theme="dark"] .btn-copy-md5:hover {
  background: #ffffff;
  color: #0f0f0f;
}

/* Reset & Global */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  min-height: 100vh;
  background-color: var(--bg-base);
}

/* Background pattern: Textura limpia Dot Grid */
.page-glow {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: radial-gradient(rgba(2, 132, 199, 0.15) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, #000 70%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, #000 70%, transparent 100%);
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}

[data-theme="dark"] .page-glow {
  background-image: radial-gradient(rgba(56, 189, 248, 0.18) 1px, transparent 1px);
}

/* Ambient Cursor Spotlight Glow */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 680px;
  height: 680px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.08) 0%, rgba(16, 185, 129, 0.03) 40%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  filter: blur(45px);
  opacity: 0;
  transition: opacity 1s ease;
  will-change: transform;
}

[data-theme="dark"] .cursor-glow {
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, rgba(16, 185, 129, 0.04) 40%, transparent 70%);
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
}

/* Typography Classes */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); line-height: 1.25; font-weight: 800; color: var(--text-primary); }

.text-gradient {
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   NAVIGATION BAR (Clean & Professional)
   ========================================================================== */
.site-header {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 3rem);
  max-width: var(--container-width);
  z-index: 1000;
  transition: var(--transition);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0 1.5rem 0 2rem;
  box-shadow: var(--shadow-sm);
}

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

.nav-brand img { 
  height: 42px; 
  width: auto; 
  object-fit: contain; 
}

.footer-brand img {
  height: 40px; 
  margin-bottom: 1.5rem;
}

.nav-badge-os {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--accent-mint-dim);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  color: var(--accent-mint);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 1.85rem;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent-blue);
}

.nav-actions { display: flex; align-items: center; gap: 0.85rem; }

/* Theme Toggle Button (Moon / Sun) */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  padding: 0;
}

.theme-toggle:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  transform: scale(1.08);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.theme-toggle:hover svg {
  transform: rotate(20deg);
}

/* In Dark Mode: show vibrant cyan moon, hide sun */
[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
  stroke: #38bdf8;
}
[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

/* In Light Mode: show warm amber sun, hide moon */
html:not([data-theme="dark"]) .theme-toggle .icon-moon {
  display: none;
}
html:not([data-theme="dark"]) .theme-toggle .icon-sun {
  display: block;
  stroke: #f59e0b;
}

.btn-nav-download {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-blue);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
  transition: var(--transition);
}

.btn-nav-download:hover {
  background: #0369a1; /* Darker blue */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
}

.btn-nav-download svg { width: 16px; height: 16px; fill: currentColor; }

.mobile-toggle { display: none; color: var(--text-primary); padding: 4px; }
.mobile-toggle svg { width: 24px; height: 24px; stroke: currentColor; stroke-width: 2; }

/* Mobile Menu */
.mobile-nav-drawer {
  position: fixed;
  top: 90px; left: 1.5rem; right: 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
}
.mobile-nav-drawer.active {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.mobile-nav-drawer a {
  font-size: 1.05rem; color: var(--text-primary); font-weight: 600; padding: 0.5rem 0; border-bottom: 1px solid var(--border-subtle);
}
.mobile-nav-drawer a:last-child { border-bottom: none; }

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn-primary, .btn-secondary, .btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 1rem 2rem;
  border-radius: var(--radius-full);
  font-size: 1rem; font-weight: 700;
  transition: var(--transition);
}

.btn-primary {
  background: var(--text-primary);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.15);
}
.btn-primary:hover {
  background: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(2, 132, 199, 0.3);
}

.btn-secondary {
  background: var(--bg-surface);
  border: 1px solid var(--border-focus);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  border-color: var(--text-primary);
  background: var(--bg-base);
}

/* ==========================================================================
   HERO SECTION (Corporate / Modern Education)
   ========================================================================== */
.hero {
  padding-top: 200px;
  padding-bottom: 80px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  width: min(850px, 90vw);
  height: 420px;
  background: radial-gradient(ellipse, rgba(2, 132, 199, 0.06) 0%, rgba(16, 185, 129, 0.02) 45%, transparent 70%);
  pointer-events: none;
  z-index: -1;
  filter: blur(40px);
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-focus);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  margin-bottom: 2rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

.pulse-dot {
  width: 8px; height: 8px;
  background-color: var(--accent-mint);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--accent-mint-dim);
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.hero-title span { display: block; }
.hero-title .tag-linux {
  font-size: 0.35em;
  letter-spacing: 0.15em;
  color: var(--accent-blue);
  margin-top: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-subtitle {
  font-size: clamp(1.15rem, 2.5vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 3rem auto;
  font-weight: 500;
}
.hero-subtitle strong { color: var(--text-primary); }

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.hero-cta-group .btn-icon { width: 20px; height: 20px; fill: currentColor; }

.md5-box {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 6px 6px 6px 20px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 6rem;
  box-shadow: var(--shadow-sm);
}

.md5-hash { color: var(--text-secondary); font-weight: 600; }

.btn-copy-md5 {
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-copy-md5:hover { background: var(--text-primary); color: #ffffff; }

/* Hero Laptop Display */
.hero-mockup-wrapper {
  max-width: 1080px;
  margin: 0 auto;
  position: relative;
}

.hero-laptop-display {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: 1rem;
}

.hero-laptop-display img {
  width: 100%;
  max-width: 1040px;
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.45));
  display: block;
}

/* Floating Minimal Badges - Light Mode */
.floating-badge {
  position: absolute;
  background: var(--bg-surface);
  border: 1px solid var(--border-focus);
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  display: flex; align-items: center; gap: 14px;
  box-shadow: var(--shadow-lg);
  z-index: 10;
  animation: float 6s ease-in-out infinite;
}
.floating-badge-1 { bottom: -20px; left: -30px; }
.floating-badge-2 { top: 40px; right: -20px; animation-delay: -3s; }

.badge-icon-box {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-mint-dim);
  color: var(--accent-mint);
  display: flex; align-items: center; justify-content: center;
}
.badge-icon-box svg { width: 20px; height: 20px; fill: currentColor; }
.badge-text-title { font-size: 0.95rem; font-weight: 700; color: var(--text-primary); }
.badge-text-sub { font-size: 0.8rem; color: var(--text-secondary); }

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

/* ==========================================================================
   SECTION GLOBALS
   ========================================================================== */
.section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

.section-header { margin-bottom: 4rem; max-width: 680px; text-align: left; }

.section-tag {
  display: inline-block;
  font-family: var(--font-body);
  color: var(--accent-blue);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.section-desc {
  font-size: 1.15rem; color: var(--text-secondary); line-height: 1.6;
}

/* ==========================================================================
   PILAR FEATURES GRID (Clean, Balanced, Symmetrical)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2.25rem 1.85rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.35s ease;
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.feature-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.75rem;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-subtle);
  background: var(--bg-base);
  transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
  transform: scale(1.08);
}

.feature-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.feature-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}

.card-mint .feature-icon { background: rgba(16, 185, 129, 0.08); border-color: rgba(16, 185, 129, 0.2); }
.card-mint .feature-badge { background: rgba(16, 185, 129, 0.1); color: var(--accent-mint); }
.card-mint .feature-dot { background-color: var(--accent-mint); }

.card-blue .feature-icon { background: rgba(2, 132, 199, 0.08); border-color: rgba(2, 132, 199, 0.2); }
.card-blue .feature-badge { background: rgba(2, 132, 199, 0.1); color: var(--accent-blue); }
.card-blue .feature-dot { background-color: var(--accent-blue); }

.card-indigo .feature-icon { background: rgba(99, 102, 241, 0.08); border-color: rgba(99, 102, 241, 0.2); }
.card-indigo .feature-badge { background: rgba(99, 102, 241, 0.1); color: #6366f1; }
.card-indigo .feature-dot { background-color: #6366f1; }

.card-cyan .feature-icon { background: rgba(6, 182, 212, 0.08); border-color: rgba(6, 182, 212, 0.2); }
.card-cyan .feature-badge { background: rgba(6, 182, 212, 0.1); color: #0891b2; }
.card-cyan .feature-dot { background-color: #0891b2; }

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.feature-footer {
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.feature-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-tertiary);
}

.feature-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

@media (max-width: 1100px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .feature-card {
    padding: 1.75rem 1.5rem;
  }
}

/* ==========================================================================
   METRICS & MISSION (Clean & Trustworthy)
   ========================================================================== */
.mission-section {
  padding-top: 60px;
}

.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
  margin-bottom: 5rem;
}

.stat-box {
  background: var(--bg-surface);
  padding: 3.5rem 2rem;
  text-align: center;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3.5rem; font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.stat-number span { color: var(--accent-blue); }

.stat-label { font-size: 1rem; color: var(--text-secondary); font-weight: 600; }

.mission-bento {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.5rem;
  align-items: stretch;
}

.mission-text-card, .mission-objectives-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 3.5rem 3rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.mission-text-card h3, .mission-objectives-card h3 {
  font-size: 2.25rem;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.mission-lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  line-height: 1.7;
}

.mission-quote {
  padding: 1.25rem 0 1.25rem 1.75rem;
  border-left: 4px solid var(--accent-mint);
  font-style: italic;
  color: var(--text-secondary);
  font-size: 1.05rem;
  font-weight: 500;
  background: linear-gradient(90deg, var(--bg-base) 0%, transparent 100%);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 1.75rem;
}

.mission-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.mission-tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
}

/* Objectives List (Right Card) */
.mission-points-list {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  margin-top: 0.5rem;
}

.mission-point-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.mission-point-item:hover {
  border-color: var(--border-focus);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.mission-point-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.mission-point-text strong {
  display: block;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 4px;
  font-weight: 700;
}

.mission-point-text p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* ==========================================================================
   INSTALLATION
   ========================================================================== */
.ventoy-bar {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem 3rem;
  margin-bottom: 3rem;
  box-shadow: var(--shadow-sm);
}

.ventoy-info { display: flex; align-items: center; gap: 2rem; }
.ventoy-logo { height: 40px; }
.ventoy-text h4 { font-size: 1.25rem; margin-bottom: 0.25rem; }
.ventoy-text p { font-size: 1rem; color: var(--text-secondary); }

.steps-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: stretch;
}

.step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 3rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.step-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 3.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, #38bdf8 0%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 1.25rem;
  display: inline-block;
  letter-spacing: -0.03em;
}

.step-card h3 { font-size: 1.5rem; margin-bottom: 1rem; }
.step-card p { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 2rem; flex-grow: 1; }

.step-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-base);
  padding: 14px;
  height: 220px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: auto;
}

.step-img-wrap img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 6px;
  display: block;
  transition: transform 0.3s ease;
}

.step-card:hover .step-img-wrap img {
  transform: scale(1.04);
}

/* ==========================================================================
   LOW SPEC (Equipos Antiguos & Hardware Longevity - Zorin Style)
   ========================================================================== */
.low-spec-banner {
  background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-base) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 4.5rem;
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 3.5rem;
  align-items: center;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-md);
}

.low-spec-badge {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--accent-mint); font-family: var(--font-body); font-size: 0.85rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  background: var(--accent-mint-dim);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(16, 185, 129, 0.2);
}
.low-spec-banner h2 { font-size: clamp(2rem, 3.5vw, 3rem); margin-bottom: 1.25rem; }
.low-spec-banner p { color: var(--text-secondary); font-size: 1.1rem; line-height: 1.6; margin-bottom: 1.75rem; }

.hardware-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.hardware-metric-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.hardware-metric-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-mint);
  line-height: 1.1;
  margin-bottom: 4px;
}

.hardware-metric-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 600;
  line-height: 1.3;
}

.low-spec-img {
  position: relative;
  display: flex;
  justify-content: center;
}

.low-spec-img img {
  width: 100%;
  max-width: 440px;
  filter: drop-shadow(0 25px 50px rgba(0,0,0,0.4));
  display: block;
}

/* ==========================================================================
   SOFTWARE CATALOG
   ========================================================================== */
.catalog-filter-bar {
  display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 4rem;
  background: var(--bg-surface); padding: 8px; border-radius: var(--radius-full); 
  border: 1px solid var(--border-subtle);
  width: fit-content;
  box-shadow: var(--shadow-sm);
}

.filter-btn {
  padding: 10px 20px; border-radius: var(--radius-full);
  font-size: 0.95rem; font-weight: 600; color: var(--text-secondary);
  transition: var(--transition);
}
.filter-btn.active, .filter-btn:hover {
  background: var(--bg-base); color: var(--text-primary); border: 1px solid var(--border-focus);
}

.software-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem;
}

.app-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex; flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.app-card:hover { border-color: var(--border-focus); box-shadow: var(--shadow-md); transform: translateY(-4px); }

.app-header { display: flex; align-items: center; gap: 1.25rem; margin-bottom: 1.25rem; }
.app-icon {
  width: 60px; height: 60px; background: var(--bg-base); border-radius: 16px;
  display: flex; align-items: center; justify-content: center; padding: 10px; border: 1px solid var(--border-subtle);
  flex-shrink: 0;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.app-card:hover .app-icon {
  transform: scale(1.08);
  border-color: var(--border-focus);
}
.app-icon img { width: 100%; height: 100%; object-fit: contain; display: block; }

.app-icon-symbol {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--text-primary);
  background: var(--bg-base);
}

.app-icon-emoji { font-size: 1.6rem; }
.icon-green { background: rgba(16, 185, 129, 0.15); border-color: rgba(16, 185, 129, 0.25); }
.icon-blue { background: rgba(2, 132, 199, 0.15); border-color: rgba(2, 132, 199, 0.25); }
.icon-purple { background: rgba(139, 92, 246, 0.15); border-color: rgba(139, 92, 246, 0.25); }
.icon-orange { background: rgba(245, 158, 11, 0.15); border-color: rgba(245, 158, 11, 0.25); }

.app-meta h4 { font-size: 1.25rem; margin-bottom: 4px; }
.app-meta span { font-size: 0.8rem; color: var(--accent-blue); font-weight: 700; text-transform: uppercase; }

.app-card p { font-size: 1rem; color: var(--text-secondary); line-height: 1.5; }

/* ==========================================================================
   SUBJECTS SHOWCASE (Software por Materias - Zorin Style)
   ========================================================================== */
.subject-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.subject-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2.75rem 2.25rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.subject-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.subject-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
  width: fit-content;
}

.badge-orange { background: rgba(245, 158, 11, 0.12); color: #d97706; border: 1px solid rgba(245, 158, 11, 0.25); }
.badge-purple { background: rgba(139, 92, 246, 0.12); color: #8b5cf6; border: 1px solid rgba(139, 92, 246, 0.25); }
.badge-blue { background: rgba(2, 132, 199, 0.12); color: #0284c7; border: 1px solid rgba(2, 132, 199, 0.25); }
.badge-mint { background: rgba(16, 185, 129, 0.12); color: #10b981; border: 1px solid rgba(16, 185, 129, 0.25); }
.badge-coral { background: rgba(239, 68, 68, 0.12); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.25); }

.subject-card h3 {
  font-size: 1.6rem;
  margin-bottom: 0.35rem;
  color: var(--text-primary);
}

.subject-card .subject-sub {
  font-size: 0.95rem;
  color: var(--accent-blue);
  font-weight: 700;
  margin-bottom: 1rem;
}

.subject-card p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.75rem;
  flex: 1;
}

.subject-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.subject-feat-pill {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-base);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

/* ==========================================================================
   STEM & ROBOTICS (Semilleros Científicos - Zorin Style)
   ========================================================================== */
.stem-bento {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 1.5rem;
}

.stem-featured-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stem-featured-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.stem-featured-body {
  padding: 3rem;
  flex: 1;
}

.stem-featured-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--accent-mint);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.stem-featured-body h3 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.stem-featured-body p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.stem-featured-img {
  width: 100%;
  height: 280px;
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
  overflow: hidden;
}

.stem-featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.stem-featured-card:hover .stem-featured-img img {
  transform: scale(1.03);
}

.stem-side-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stem-side-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 1.85rem 2rem;
  display: flex;
  gap: 1.35rem;
  align-items: flex-start;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.stem-side-card:hover {
  border-color: var(--border-focus);
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.stem-side-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
}

.stem-side-content h4 {
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.stem-side-content p {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   OFFLINE LEARNING (Rompe la brecha digital - Zorin Kolibri style)
   ========================================================================== */
.offline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.offline-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 3rem 2.25rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.offline-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.offline-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.75rem;
}

.offline-card h3 {
  font-size: 1.45rem;
  margin-bottom: 0.75rem;
}

.offline-card p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   CLASSROOM MANAGEMENT (Docente / Veyon style)
   ========================================================================== */
.classroom-bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.classroom-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2.25rem 1.85rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.classroom-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.classroom-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.35rem;
}

.classroom-card h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.classroom-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   DOWNLOAD / REQUIREMENTS
   ========================================================================== */
.requirements-box {
  background: var(--bg-surface); border: 1px solid var(--border-subtle); border-radius: var(--radius-xl);
  padding: 4rem; margin-bottom: 5rem;
  box-shadow: var(--shadow-sm);
}
.req-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.req-col h4 { display: flex; align-items: center; gap: 12px; font-size: 1.25rem; margin-bottom: 2rem; color: var(--text-primary); }
.req-col h4 svg { width: 24px; height: 24px; fill: var(--accent-blue); }
.req-list li {
  display: flex; justify-content: space-between; padding: 1rem 0; border-bottom: 1px solid var(--border-subtle);
  font-size: 1.05rem;
}
.req-list li:last-child { border-bottom: none; }
.req-list li span { color: var(--text-secondary); }
.req-list li strong { color: var(--text-primary); font-family: var(--font-mono); font-weight: 600; }

.final-banner {
  text-align: center; max-width: 860px; margin: 0 auto;
}
.final-banner h2 { font-size: 3.5rem; margin-bottom: 1.5rem; }
.final-banner p { font-size: 1.25rem; color: var(--text-secondary); margin-bottom: 3rem; }
.final-banner-img {
  border-radius: var(--radius-xl); overflow: hidden; border: 1px solid var(--border-subtle); margin-bottom: 3rem;
  box-shadow: var(--shadow-lg);
  background: var(--bg-surface);
}
.final-banner-img img {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 5rem 0 3rem;
  position: relative;
  z-index: 1;
}
.footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 5rem; margin-bottom: 5rem;
}
.footer-brand img { height: 40px; margin-bottom: 1.5rem; }
.footer-brand p { color: var(--text-tertiary); font-size: 1rem; max-width: 400px; }

.footer-col h5 { font-size: 1.15rem; margin-bottom: 2rem; color: var(--text-primary); }
.footer-links li { margin-bottom: 1rem; }
.footer-links a { color: var(--text-secondary); font-size: 1rem; font-weight: 500; transition: var(--transition); }
.footer-links a:hover { color: var(--accent-blue); }

.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 2rem; border-top: 1px solid var(--border-subtle);
  color: var(--text-tertiary); font-size: 0.95rem; font-weight: 500;
}

/* Modal Video */
.modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.85); backdrop-filter: blur(8px);
  z-index: 2000; display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: var(--transition);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal-content {
  width: 90%; max-width: 1000px; position: relative; border-radius: var(--radius-xl); overflow: hidden;
  box-shadow: 0 25px 50px rgba(0,0,0,0.25);
}
.close-modal {
  position: absolute; top: 20px; right: 20px;
  color: var(--text-primary);
  width: 44px; height: 44px;
  background: var(--bg-surface);
  border: 1px solid var(--border-focus);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 2001; transition: var(--transition);
  box-shadow: var(--shadow-md);
}
.close-modal:hover { background: var(--accent-blue); color: #ffffff; transform: scale(1.05); }
.video-container { position: relative; padding-bottom: 56.25%; height: 0; background: #000; }
.video-container iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

/* Responsive adjustments */
@media (max-width: 1024px) {
  .bento-grid { grid-template-columns: repeat(2, 1fr); }
  .subject-grid { grid-template-columns: repeat(2, 1fr); }
  .stem-bento { grid-template-columns: 1fr; }
  .offline-grid { grid-template-columns: repeat(2, 1fr); }
  .classroom-bento { grid-template-columns: repeat(2, 1fr); }
  .mission-bento { grid-template-columns: 1fr; }
  .steps-container { grid-template-columns: 1fr; }
  .low-spec-banner { grid-template-columns: 1fr; text-align: center; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  /* Navigation */
  .site-header { top: 1rem; width: calc(100% - 2rem); }
  .nav-wrap { height: 60px; padding: 0 0.85rem 0 1.15rem; }
  .nav-brand img { height: 28px; }
  .nav-links, .btn-nav-download { display: none; }
  .mobile-toggle { display: block; }
  .theme-toggle { width: 36px; height: 36px; }
  .theme-toggle svg { width: 18px; height: 18px; }
  
  /* Hero */
  .hero { padding-top: 130px; padding-bottom: 50px; }
  .hero-pill { font-size: 0.75rem; padding: 6px 14px; margin-bottom: 1.5rem; }
  .hero-title { font-size: 2.5rem; }
  .hero-subtitle { font-size: 1.1rem; margin-bottom: 2rem; }
  .hero-cta-group { flex-direction: column; width: 100%; gap: 0.75rem; }
  .hero-cta-group .btn-primary, .hero-cta-group .btn-secondary { width: 100%; }
  
  .md5-box {
    width: 100%;
    max-width: 100%;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    border-radius: var(--radius-lg);
    margin-bottom: 3.5rem;
  }
  .md5-hash { font-size: 0.75rem; word-break: break-all; }
  
  /* Floating Badges on Mobile */
  .floating-badge {
    position: static;
    margin: 0.75rem auto;
    width: fit-content;
    max-width: 100%;
    box-shadow: var(--shadow-sm);
    animation: none;
  }
  
  /* Section & Spacing */
  .section { padding: 60px 0; }
  .section-header { margin-bottom: 2.5rem; }
  .section-title { font-size: 2rem; }
  
  /* Bento Grid (Pilares) */
  .bento-grid { grid-template-columns: 1fr; grid-auto-rows: auto; gap: 1rem; }
  .bento-card { padding: 2rem 1.5rem; }
  .bento-card.wide { grid-column: span 1; }
  .bento-card.tall { grid-row: auto; }
  .bento-title { font-size: 1.5rem; margin-top: 1.25rem; }

  /* Subjects (Software por Materias) */
  .subject-grid { grid-template-columns: 1fr; gap: 1rem; }
  .subject-card { padding: 2rem 1.5rem; }
  .subject-card h3 { font-size: 1.4rem; }

  /* STEM (Semilleros Científicos) */
  .stem-bento { grid-template-columns: 1fr; gap: 1rem; }
  .stem-featured-body { padding: 2rem 1.5rem; }
  .stem-featured-body h3 { font-size: 1.75rem; }
  .stem-featured-img { height: 200px; }
  .stem-side-card { padding: 1.5rem; flex-direction: column; gap: 1rem; }

  /* Offline Learning */
  .offline-grid { grid-template-columns: 1fr; gap: 1rem; }
  .offline-card { padding: 2rem 1.5rem; }

  /* Classroom Management */
  .classroom-bento { grid-template-columns: 1fr; gap: 1rem; }
  .classroom-card { padding: 1.75rem 1.5rem; }
  
  /* Stats Grid */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-bottom: 3rem; }
  .stat-box { padding: 2rem 1rem; }
  .stat-number { font-size: 2.5rem; }
  .stat-label { font-size: 0.85rem; }
  
  /* Mission Mobile */
  .mission-text-card, .mission-objectives-card { padding: 2rem 1.5rem; }
  .mission-text-card h3, .mission-objectives-card h3 { font-size: 1.75rem; }
  .mission-point-item { padding: 1rem; gap: 1rem; }
  
  /* Ventoy Bar & Steps */
  .ventoy-bar { flex-direction: column; align-items: stretch; gap: 1.5rem; padding: 1.75rem 1.25rem; }
  .ventoy-info { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .ventoy-bar .btn-secondary { text-align: center; }
  .step-card { padding: 2rem 1.5rem; }
  .step-number { font-size: 3rem; margin-bottom: 1rem; }
  
  /* Low-spec (Equipos Antiguos) */
  .low-spec-banner { padding: 2.5rem 1.5rem; gap: 2rem; }
  .low-spec-banner h2 { font-size: 2rem; }
  .hardware-metrics { grid-template-columns: 1fr; gap: 0.75rem; }
  .low-spec-banner .btn-primary { width: 100%; text-align: center; }
  
  /* Software Catalog */
  .catalog-filter-bar { width: 100%; justify-content: center; gap: 0.4rem; padding: 6px; }
  .filter-btn { padding: 8px 14px; font-size: 0.85rem; }
  .software-grid { grid-template-columns: 1fr; gap: 1rem; }
  .app-card { padding: 1.5rem; }
  
  /* Requirements & Final Banner */
  .requirements-box { padding: 2rem 1.5rem; margin-bottom: 3rem; }
  .req-grid { grid-template-columns: 1fr; gap: 2rem; }
  .final-banner h2 { font-size: 2.25rem; }
  .final-banner .btn-primary { width: 100%; text-align: center; }
  
  /* Footer */
  .site-footer { padding: 3.5rem 0 2rem; }
  .footer-top { grid-template-columns: 1fr; gap: 2.5rem; margin-bottom: 3rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.15rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .container { padding: 0 1rem; }
}

/* ==========================================================================
   ZORIN-STYLE SECTIONS
   ========================================================================== */
.zorin-section {
  padding: 120px 0;
  position: relative;
  z-index: 1;
}

.zorin-section.bg-white {
  background-color: var(--bg-surface);
}

.zorin-section.bg-gray {
  background-color: var(--bg-base);
}

.zorin-container {
  width: 100%;
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 2rem;
}

.zorin-container-narrow {
  max-width: 920px;
  margin: 0 auto;
}

.zorin-text-center {
  text-align: center;
  max-width: 940px;
  margin: 0 auto;
}

.zorin-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  letter-spacing: -0.04em;
}

.zorin-title .muted {
  opacity: 0.4;
}
[data-theme="dark"] .zorin-title .muted {
  opacity: 0.5;
}

.zorin-desc {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-weight: 400;
}

.zorin-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem 2rem;
  margin-top: 4rem;
}

.zorin-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3.5rem;
  margin-top: 4rem;
}

.zorin-box {
  text-align: left;
}

.zorin-box-img {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

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

.zorin-box h4 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.zorin-box p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
}

.zorin-shadow {
  box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}
[data-theme="dark"] .zorin-shadow {
  box-shadow: 0 15px 35px rgba(0,0,0,0.5);
}

.zorin-rounded {
  border-radius: 12px;
}

.zorin-split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4.5rem;
  align-items: center;
}

.zorin-split-img img {
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
}

.zorin-split-text {
  text-align: left;
}

.zorin-learn-more {
  display: inline-block;
  margin-top: 1.5rem;
  color: var(--accent-blue);
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.zorin-learn-more:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.zorin-figure-center {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .zorin-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .zorin-split {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .zorin-split-text {
    text-align: center;
  }
  .zorin-split-text .text-left {
    text-align: center !important;
  }
  .zorin-split-img {
    order: -1;
  }
}

@media (max-width: 600px) {
  .zorin-grid-3, .zorin-grid-2 {
    grid-template-columns: 1fr;
  }
  .zorin-section {
    padding: 80px 0;
  }
}

/* ==========================================================================
   ZORIN-STYLE FINAL CTA CARD
   ========================================================================== */
.zorin-cta-card {
  background: #ebf1f7;
  border: 1px solid #d8e2ed;
  border-radius: 32px;
  padding: 6rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-top: 3rem;
  transition: var(--transition);
}

[data-theme="dark"] .zorin-cta-card {
  background: #141a22;
  border-color: #222c38;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.zorin-cta-card .cta-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.zorin-cta-card .cta-title {
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.zorin-cta-card .cta-desc {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 3rem;
}

.zorin-cta-card .cta-action-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.btn-zorin-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: #0ea5e9;
  color: #ffffff !important;
  font-size: 1.15rem;
  font-weight: 700;
  padding: 1.15rem 3rem;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 25px rgba(14, 165, 233, 0.35);
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
  text-decoration: none;
}

.btn-zorin-download:hover {
  background: #0284c7;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 35px rgba(14, 165, 233, 0.45);
}

.btn-zorin-download .btn-icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.zorin-cta-card .cta-subtext {
  font-size: 0.95rem;
  color: var(--text-tertiary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

@media (max-width: 768px) {
  .zorin-cta-card {
    padding: 4rem 1.5rem;
    border-radius: 24px;
  }
  .btn-zorin-download {
    width: 100%;
    padding: 1.1rem 2rem;
  }
}

/* ==========================================================================
   HERO 2-COLUMN BALANCED SYMMETRY & APPLE-STYLE LAPTOP
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding-top: 80px !important;
  padding-bottom: 60px !important;
  text-align: left !important;
  position: relative;
  z-index: 1;
  box-sizing: border-box !important;
}

.hero .hero-container {
  max-width: 1380px !important;
  width: 100% !important;
  margin: 0 auto !important;
  padding: 0 clamp(1.5rem, 3vw, 2.5rem) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.hero-grid {
  display: grid !important;
  grid-template-columns: 1fr 1.25fr !important;
  gap: clamp(2rem, 3.5vw, 4rem) !important;
  align-items: center !important;
  justify-content: center !important;
  width: 100% !important;
}

.hero-content {
  display: flex !important;
  flex-direction: column !important;
  align-items: flex-start !important;
  justify-content: center !important;
  text-align: left !important;
  width: 100% !important;
  max-width: 540px !important;
  padding-left: clamp(1.25rem, 3vw, 3.5rem) !important;
}

.hero-content .hero-pill {
  margin-bottom: 1.25rem !important;
}

.hero-content .hero-title {
  text-align: left !important;
  font-size: clamp(2.4rem, 3.8vw, 3.8rem) !important;
  line-height: 1.08 !important;
  margin-bottom: 1.25rem !important;
}

.hero-content .hero-subtitle {
  text-align: left !important;
  margin: 0 0 1.5rem 0 !important;
  font-size: 1.05rem !important;
  line-height: 1.6 !important;
  max-width: 490px !important;
}

.hero-content .hero-cta-group {
  justify-content: flex-start !important;
  margin-bottom: 1rem !important;
  gap: 1rem !important;
}

.hero-content .md5-box {
  margin-bottom: 0 !important;
  margin-top: 0.15rem !important;
  padding: 5px 6px 5px 16px !important;
  font-size: 0.82rem !important;
  gap: 10px !important;
}

.hero-content .md5-box .btn-copy-md5 {
  padding: 5px 14px !important;
  font-size: 0.78rem !important;
}

.hero-visual {
  position: relative;
  width: 100%;
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
}

/* ==========================================================================
   3D OPENING LAPTOP STAGE (Centered & Straight Symmetry)
   ========================================================================== */
.apple-laptop-stage,
.hero-laptop-stage {
  position: relative;
  width: 100%;
  max-width: 820px !important;
  margin: 0 auto;
  perspective: 1600px;
  perspective-origin: 50% 50%;
  animation: heroLaptopFloat 4.5s ease-in-out infinite alternate;
  will-change: transform;
}

@keyframes heroLaptopFloat {
  0% {
    transform: translateY(0px);
  }
  100% {
    transform: translateY(-8px);
  }
}

.apple-laptop-screen {
  position: relative;
  width: 100%;
  transform-origin: 50% 90.5%;
  transform: perspective(1600px) rotateX(-60deg) scale(0.96);
  filter: brightness(0.3) contrast(1.1);
  opacity: 0;
  will-change: transform, filter, opacity;
  z-index: 2;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.apple-laptop-screen.animate-open {
  animation: appleLaptopOpenReverse 1.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.apple-laptop-screen img {
  width: 100%;
  display: block;
}

.apple-laptop-base {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.apple-laptop-base img {
  width: 100%;
  display: block;
  filter: drop-shadow(0 25px 60px rgba(0, 0, 0, 0.45));
}

[data-theme="dark"] .apple-laptop-base img {
  filter: drop-shadow(0 25px 70px rgba(0, 0, 0, 0.75)) drop-shadow(0 0 45px rgba(2, 132, 199, 0.25));
}

@keyframes appleLaptopOpenReverse {
  0% {
    transform: perspective(1600px) rotateX(-60deg) scale(0.96);
    filter: brightness(0.3) contrast(1.1);
    opacity: 0;
  }
  25% {
    opacity: 1;
    filter: brightness(0.6) contrast(1.05);
  }
  70% {
    filter: brightness(0.95);
  }
  100% {
    transform: perspective(1600px) rotateX(0deg) scale(1);
    filter: brightness(1) contrast(1);
    opacity: 1;
  }
}

@media (max-width: 1180px) {
  .nav-links {
    gap: 1.15rem;
  }
  .nav-links a {
    font-size: 0.86rem;
  }
  .btn-nav-download {
    padding: 0.55rem 1.1rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 991px) {
  .hero {
    padding-top: 140px !important;
    text-align: center !important;
  }
  .hero-grid {
    grid-template-columns: 1fr !important;
    gap: 3rem !important;
    text-align: center !important;
  }
  .hero-content {
    align-items: center !important;
    text-align: center !important;
    padding-left: 0 !important;
  }
  .hero-content .hero-title {
    text-align: center !important;
  }
  .hero-content .hero-subtitle {
    text-align: center !important;
    margin: 0 auto 2rem auto !important;
  }
  .hero-content .hero-cta-group {
    justify-content: center !important;
  }
  .hero-laptop-stage,
  .apple-laptop-stage {
    max-width: 580px !important;
  }
}

@media (max-width: 600px) {
  .hero-laptop-stage,
  .apple-laptop-stage {
    max-width: 100% !important;
  }
  .laptop-showcase-pill {
    font-size: 0.72rem;
    padding: 5px 12px;
    gap: 0.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-laptop-stage,
  .apple-laptop-stage,
  .site-preloader {
    animation: none !important;
    transform: none !important;
    filter: none !important;
  }
}

/* ==========================================================================
   MINIMALIST PURE WHITE PRELOADER (Clean & Elegant)
   ========================================================================== */
.site-preloader {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: #ffffff !important;
  z-index: 999999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  animation: autoDismissPreloader 0.5s cubic-bezier(0.16, 1, 0.3, 1) 1.5s forwards;
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes autoDismissPreloader {
  to {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    display: none;
  }
}

.site-preloader.loaded {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  display: none !important;
  transform: scale(1.02);
}

.preloader-content {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.preloader-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.preloader-logo {
  height: 88px;
  width: auto;
  max-width: 85vw;
  object-fit: contain;
  filter: none !important;
  box-shadow: none !important;
  animation: preloaderPulse 1.8s ease-in-out infinite alternate;
}

@media (max-width: 768px) {
  .preloader-logo {
    height: 55px;
  }
}

@keyframes preloaderPulse {
  0% { transform: scale(0.97); opacity: 0.9; }
  100% { transform: scale(1.01); opacity: 1; }
}

/* ==========================================================================
   THEME-AWARE DYNAMIC LOGO (Black for Light Mode, White for Dark Mode)
   ========================================================================== */
.logo-for-dark {
  display: none !important;
}

.logo-for-light {
  display: inline-block !important;
}

[data-theme="dark"] .logo-for-light {
  display: none !important;
}

[data-theme="dark"] .logo-for-dark {
  display: inline-block !important;
}