/* ===== CSS VARIABLES ===== */
:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --violet-400: #a78bfa;
  --violet-500: #8b5cf6;
  --violet-600: #7c3aed;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --emerald-50: #ecfdf5;
  --emerald-100: #d1fae5;
  --emerald-600: #059669;
  --emerald-700: #047857;
  --gray-50: #18181b;
  --gray-100: #27272a;
  --gray-200: #3f3f46;
  --gray-300: #52525b;
  --gray-400: #71717a;
  --gray-500: #a1a1aa;
  --gray-600: #d4d4d8;
  --gray-700: #e4e4e7;
  --gray-800: #f4f4f5;
  --gray-900: #fafafa;
  --orange-50: #fff7ed;
  --orange-100: #ffedd5;
  --pink-50: #fdf2f8;
  --pink-100: #fce7f3;
  --purple-50: #faf5ff;
  --purple-100: #f3e8ff;
  --cyan-50: #ecfeff;
  --cyan-100: #cffafe;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  
  /* Dark theme specific */
  --bg-primary: #09090b;
  --bg-secondary: #18181b;
  --bg-tertiary: #27272a;
  --border-color: #3f3f46;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--gray-900);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  border: none;
  background: none;
  font: inherit;
  cursor: pointer;
}

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

ul, ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* ===== UTILITIES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 640px) {
  .container { padding: 0 24px; }
}

@media (min-width: 1024px) {
  .container { padding: 0 32px; }
}

.desktop-only {
  display: none !important;
}

@media (min-width: 768px) {
  .desktop-only { display: inline-flex !important; }
}

.gradient-text {
  background: linear-gradient(135deg, var(--blue-400), var(--violet-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-light {
  background: linear-gradient(135deg, var(--blue-400), var(--violet-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue-500), var(--violet-600));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 4px;
}

@media (min-width: 768px) {
  .nav-desktop { display: flex; }
}

.nav-link {
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-500);
  border-radius: 8px;
  transition: all 0.2s;
}

.nav-link:hover {
  color: var(--blue-400);
  background: var(--bg-tertiary);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--blue-600), var(--violet-600));
  border-radius: 12px;
  transition: all 0.2s;
}

.btn-primary:hover {
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.mobile-menu-btn {
  display: block;
  padding: 8px;
  border-radius: 8px;
  color: var(--gray-500);
}

@media (min-width: 768px) {
  .mobile-menu-btn { display: none; }
}

.mobile-menu-btn:hover {
  background: var(--bg-tertiary);
}

.mobile-menu {
  padding: 0 16px 16px;
  border-top: 1px solid var(--border-color);
}

.icon-close {
  display: none;
}

body.menu-open {
  overflow: hidden;
}

body.menu-open .icon-menu {
  display: none;
}

body.menu-open .icon-close {
  display: block;
}

#mobile-menu[hidden] {
  display: none;
}

@media (min-width: 768px) {
  .mobile-menu { display: none; }
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 8px;
}

.mobile-nav-link {
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  border-radius: 8px;
  transition: all 0.2s;
}

.mobile-nav-link:hover {
  color: var(--blue-400);
  background: var(--bg-tertiary);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: 96px 0 64px;
  overflow: hidden;
}

@media (min-width: 640px) {
  .hero { padding: 128px 0 96px; }
}

.hero-bg-blur {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.hero-bg-1 {
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0.1) 40%, transparent 70%);
  filter: blur(60px);
}

.hero-bg-2 {
  bottom: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.1), transparent);
  filter: blur(40px);
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  margin-bottom: 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--blue-400);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 999px;
}

.hero-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

@media (min-width: 640px) {
  .hero-title { font-size: 44px; }
}

@media (min-width: 1024px) {
  .hero-title { font-size: 56px; }
}

.hero-subtitle {
  margin-top: 24px;
  font-size: 18px;
  color: var(--gray-500);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

@media (min-width: 640px) {
  .hero-subtitle { font-size: 20px; }
}

.hero-buttons {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

@media (min-width: 640px) {
  .hero-buttons { flex-direction: row; justify-content: center; }
}

.btn-hero-primary,
.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 16px;
  transition: all 0.3s;
  width: 100%;
  justify-content: center;
}

@media (min-width: 640px) {
  .btn-hero-primary,
  .btn-hero-secondary {
    width: auto;
  }
}

.btn-hero-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.25);
}

.btn-hero-primary:hover {
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.35);
  transform: translateY(-3px);
}

.btn-hero-secondary {
  color: var(--gray-900);
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn-hero-secondary:hover {
  border-color: var(--blue-300);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  transform: translateY(-3px);
}

.btn-hero-secondary svg {
  color: var(--blue-600);
}

.btn-text-group {
  text-align: left;
  display: flex;
  flex-direction: column;
}

.btn-subtext {
  font-size: 12px;
  font-weight: 400;
  color: rgba(191, 219, 254, 0.8);
}

.btn-subtext-dark {
  font-size: 12px;
  font-weight: 400;
  color: var(--gray-500);
}

/* Stats */
.stats-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 640px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 12px;
  border-radius: 16px;
  background: rgba(39, 39, 42, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
}

.stat-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-900);
}

.stat-label {
  font-size: 12px;
  color: var(--gray-500);
}

/* ===== HERO IMAGE ===== */
.hero-image {
  margin-top: 64px;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255,255,255,0.05);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== FEATURE SHOWCASE ===== */
.features-showcase {
  display: flex;
  flex-direction: column;
  gap: 48px;
  max-width: 1000px;
  margin: 0 auto 0;
}

.feature-showcase-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

@media (min-width: 768px) {
  .feature-showcase-item {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
  .feature-showcase-item.reverse {
    direction: rtl;
  }
  .feature-showcase-item.reverse > * {
    direction: ltr;
  }
}

.feature-showcase-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: rgba(59, 130, 246, 0.1);
  color: var(--blue-400);
  border: 1px solid rgba(59, 130, 246, 0.2);
  margin-bottom: 16px;
}

.feature-showcase-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 12px;
}

@media (min-width: 640px) {
  .feature-showcase-title { font-size: 28px; }
}

.feature-showcase-desc {
  font-size: 16px;
  color: var(--gray-500);
  line-height: 1.7;
}

.feature-showcase-visual {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255,255,255,0.05);
}

.feature-showcase-visual img {
  width: 100%;
  height: auto;
  display: block;
}

.section-mockup-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== SECTIONS ===== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--gray-50);
}

.section-dark {
  background: linear-gradient(180deg, var(--bg-secondary), var(--gray-50));
  color: #fff;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

@media (min-width: 640px) {
  .section-title { font-size: 36px; }
}

.section-title-light {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

@media (min-width: 640px) {
  .section-title-light { font-size: 36px; }
}

.section-desc {
  margin-top: 16px;
  font-size: 18px;
  color: var(--gray-500);
  line-height: 1.6;
}

.section-text {
  margin-top: 24px;
  font-size: 18px;
  color: var(--gray-500);
  line-height: 1.7;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== GRIDS ===== */
.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ===== ABOUT CARDS ===== */
.info-card {
  text-align: center;
  padding: 32px 24px;
  border-radius: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.info-card-emoji {
  font-size: 32px;
  margin-bottom: 16px;
}

.info-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
}

.info-card-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
}

.highlight-box {
  margin-top: 40px;
  text-align: center;
  display: inline-block;
  width: 100%;
  padding: 16px 24px;
  font-size: 17px;
  font-weight: 600;
  color: var(--blue-400);
  background: rgba(59, 130, 246, 0.1);
  border-radius: 16px;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ===== FEATURE CARDS ===== */
.feature-card {
  padding: 28px 24px;
  border-radius: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.feature-card:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  transform: translateY(-4px);
}

.feature-blue { border-color: rgba(59, 130, 246, 0.3); }
.feature-blue:hover { border-color: var(--blue-400); }
.feature-green { border-color: rgba(5, 150, 105, 0.3); }
.feature-green:hover { border-color: #10b981; }
.feature-purple { border-color: rgba(139, 92, 246, 0.3); }
.feature-purple:hover { border-color: var(--violet-400); }
.feature-orange { border-color: rgba(251, 146, 60, 0.3); }
.feature-orange:hover { border-color: #fb923c; }
.feature-pink { border-color: rgba(236, 72, 153, 0.3); }
.feature-pink:hover { border-color: #ec4899; }
.feature-cyan { border-color: rgba(6, 182, 212, 0.3); }
.feature-cyan:hover { border-color: #06b6d4; }

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  font-size: 24px;
  margin-bottom: 16px;
}

.feature-blue .feature-icon { background: rgba(59, 130, 246, 0.1); }
.feature-green .feature-icon { background: rgba(5, 150, 105, 0.1); }
.feature-purple .feature-icon { background: rgba(139, 92, 246, 0.1); }
.feature-orange .feature-icon { background: rgba(251, 146, 60, 0.1); }
.feature-pink .feature-icon { background: rgba(236, 72, 153, 0.1); }
.feature-cyan .feature-icon { background: rgba(6, 182, 212, 0.1); }

.feature-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===== ADVANTAGE CARDS ===== */
.advantage-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border-radius: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: all 0.3s;
}

.advantage-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  border-color: rgba(59, 130, 246, 0.4);
}

.advantage-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all 0.3s;
}

.advantage-card:hover .advantage-icon {
  background: var(--blue-600);
  transform: scale(1.1);
}

.advantage-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-900);
}

.advantage-desc {
  margin-top: 4px;
  font-size: 12px;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ===== STEPS ===== */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 960px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
}

.step-card {
  text-align: center;
}

.step-icon-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 96px;
  height: 96px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
  border: 1px solid rgba(59, 130, 246, 0.25);
  margin-bottom: 24px;
}

.step-emoji {
  font-size: 40px;
}

.step-number {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-500), var(--violet-500));
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.step-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--gray-900);
}

.step-desc {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ===== CATEGORIES ===== */
.category-card {
  padding: 28px 24px;
  border-radius: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.category-card:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  transform: translateY(-4px);
}

.category-emoji {
  font-size: 40px;
  margin-bottom: 16px;
}

.category-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.category-desc {
  font-size: 14px;
  color: var(--gray-500);
}

/* ===== DOWNLOAD ===== */
.download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 960px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .download-grid { grid-template-columns: repeat(2, 1fr); }
}

.download-card {
  border-radius: 24px;
  border: 2px solid;
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.download-card-win {
  border-color: rgba(59, 130, 246, 0.3);
  background: var(--bg-secondary);
}

.download-card-android {
  border-color: rgba(5, 150, 105, 0.3);
  background: var(--bg-secondary);
}

.download-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.download-icon {
  font-size: 32px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
}

.download-card-win .download-icon { background: rgba(59, 130, 246, 0.15); }
.download-card-android .download-icon { background: rgba(5, 150, 105, 0.15); }

.download-platform {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
}

.download-sub {
  font-size: 14px;
  color: var(--gray-500);
}

.version-tiles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}

.version-tile {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  transition: all 0.2s;
}

.version-tile:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--gray-200);
  transform: translateY(-2px);
}

.version-tile svg {
  flex-shrink: 0;
}

.download-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.download-row:last-child {
  border-bottom: none;
}

.download-row-left {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
}

.download-row-right {
  font-size: 12px;
  color: var(--gray-500);
}

.download-description {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 24px;
}

.download-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 16px;
  font-size: 12px;
  color: var(--gray-500);
}

.btn-download {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 16px 24px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  border-radius: 16px;
  transition: all 0.3s;
}

.btn-download:hover {
  transform: translateY(-2px);
}

.btn-download-win {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
}

.btn-download-win:hover {
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.4);
}

.btn-download-android {
  background: linear-gradient(135deg, var(--emerald-600), var(--emerald-700));
  box-shadow: 0 8px 24px rgba(5, 150, 105, 0.3);
}

.btn-download-android:hover {
  box-shadow: 0 12px 32px rgba(5, 150, 105, 0.4);
}

/* ===== INSTALLATION ===== */
.install-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  max-width: 960px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .install-grid { grid-template-columns: repeat(2, 1fr); }
}

.install-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 24px;
}

.install-badge {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.install-badge.win {
  background: rgba(59, 130, 246, 0.15);
  color: var(--blue-400);
}

.install-badge.android {
  background: rgba(5, 150, 105, 0.15);
  color: #10b981;
}

.install-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.step-circle {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.step-circle.blue { background: var(--blue-600); }
.step-circle.green { background: var(--green-600); }

.install-step p {
  font-size: 14px;
  color: var(--gray-600);
  padding-top: 6px;
  line-height: 1.5;
}

.install-note {
  margin-top: 24px;
  padding-left: 48px;
  font-size: 12px;
  color: var(--gray-500);
  font-style: italic;
}

/* ===== COMPARISON TABLE ===== */
.table-wrapper {
  max-width: 900px;
  margin: 0 auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  min-width: 600px;
}

.comparison-table thead th {
  padding: 16px 12px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-500);
}

.table-th-left {
  text-align: left !important;
  color: var(--gray-600) !important;
}

.table-highlight {
  display: inline-block;
  padding: 8px 16px;
  background: var(--blue-600);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 12px;
}

.comparison-table tbody td {
  padding: 14px 12px;
  border-top: 1px solid var(--border-color);
}

.table-td-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
}

.table-td-val {
  text-align: center;
}

.table-td-val svg {
  margin: 0 auto;
}

.col-highlight {
  background: rgba(59, 130, 246, 0.05);
}

.row-alt {
  background: rgba(39, 39, 42, 0.3);
}

.table-note {
  margin-top: 32px;
  text-align: center;
  font-size: 14px;
  color: var(--gray-500);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== PREMIUM ===== */
.premium-card {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--gray-100), var(--bg-secondary));
  padding: 48px 32px;
  text-align: center;
}

@media (min-width: 640px) {
  .premium-card { padding: 64px 48px; }
}

.premium-bg-1,
.premium-bg-2 {
  position: absolute;
  width: 256px;
  height: 256px;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}

.premium-bg-1 {
  top: -60px;
  left: -60px;
  background: rgba(59, 130, 246, 0.1);
}

.premium-bg-2 {
  bottom: -60px;
  right: -60px;
  background: rgba(124, 58, 237, 0.1);
}

.premium-content {
  position: relative;
}

.premium-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--amber-400), var(--amber-500));
  margin-bottom: 24px;
  font-size: 32px;
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
}

.premium-title {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

@media (min-width: 640px) {
  .premium-title { font-size: 36px; }
}

.premium-desc {
  font-size: 18px;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.premium-desc strong {
  color: #fff;
}

.premium-note {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
  color: var(--gray-300);
}

.premium-note span:first-child {
  font-size: 20px;
}

/* ===== SYSTEM REQUIREMENTS ===== */
.req-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .req-grid { grid-template-columns: repeat(2, 1fr); }
}

.req-card {
  padding: 28px 24px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.req-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.req-header span {
  font-size: 24px;
}

.req-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-900);
}

.req-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.req-list li {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  gap: 8px;
}

.req-label {
  color: var(--gray-500);
}

.req-value {
  color: var(--gray-700);
  font-weight: 500;
  text-align: right;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item:hover {
  border-color: rgba(59, 130, 246, 0.5);
}

.faq-item.open {
  border-color: rgba(59, 130, 246, 0.5);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--gray-900);
  background: transparent;
  cursor: pointer;
}

.faq-question:hover {
  color: var(--blue-400);
}

.faq-chevron {
  flex-shrink: 0;
  color: var(--gray-400);
  transition: transform 0.3s;
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 20px 20px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===== SEO SECTION ===== */
.seo-section {
  border-top: 1px solid var(--border-color);
  padding: 64px 0;
}

.seo-content {
  max-width: 800px;
  margin: 0 auto;
}

.seo-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 24px;
}

.seo-content p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.8;
  margin-top: 16px;
}

.seo-content p:first-of-type {
  margin-top: 0;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-primary);
  color: var(--gray-500);
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
}

.footer-top {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 32px;
}

@media (min-width: 768px) {
  .footer-top {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.footer-link {
  font-size: 14px;
  color: var(--gray-400);
  transition: color 0.2s;
}

.footer-link:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (min-width: 640px) {
  .footer-bottom {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.footer-bottom p {
  font-size: 14px;
  color: var(--gray-500);
}

.footer-legal {
  display: flex;
  gap: 16px;
}

.footer-legal a {
  font-size: 12px;
  color: var(--gray-600);
  transition: color 0.2s;
}

.footer-legal a:hover {
  color: var(--gray-400);
}

/* ===== ANIMATIONS ===== */
@media (prefers-reduced-motion: no-preference) {
  .feature-card,
  .category-card,
  .advantage-card,
  .btn-hero-primary,
  .btn-hero-secondary,
  .btn-download {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-200);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-300);
}

/* Selection color */
::selection {
  background: rgba(59, 130, 246, 0.2);
  color: var(--blue-400);
}