:root {
  --color-primary: #0F172A;
  --color-primary-light: #1E3A5F;
  --color-primary-dark: #0A1020;
  --color-primary-gradient: linear-gradient(135deg, #0F172A 0%, #1E3A5F 100%);
  
  --bg-root-light: #FFFFFF;
  --bg-default-light: #F8FAFC;
  --bg-secondary-light: #EEF2F7;
  --bg-tertiary-light: #E2E8F0;
  
  --bg-root-dark: #0A1020;
  --bg-default-dark: #0F172A;
  --bg-secondary-dark: #16233A;
  --bg-tertiary-dark: #233552;
  
  --text-primary-light: #0A1020;
  --text-secondary-light: #64748B;
  --text-primary-dark: #F8FAFC;
  --text-secondary-dark: #94A3B8;
  
  --accent-task: #22C55E;
  --accent-note: #22C55E;
  --accent-worry: #D97757;
  --color-success: #52A287;
  --color-warning: #F5A962;
  --color-error: #E85D5D;
  
  --border-light: rgba(0, 0, 0, 0.06);
  --border-dark: rgba(255, 255, 255, 0.08);
  
  --glass-light: rgba(255, 255, 255, 0.7);
  --glass-dark: rgba(15, 23, 42, 0.8);
  
  --font-h1: clamp(40px, 6vw, 64px);
  --font-h2: clamp(28px, 4vw, 40px);
  --font-h3: 22px;
  --font-h4: 18px;
  --font-body: 16px;
  --font-small: 14px;
  --font-caption: 12px;
  
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-xxxl: 80px;
  
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 40px rgba(30, 58, 95, 0.24);
  --hero-bg-linear-start: rgba(15, 23, 42, 0.07);
  --hero-bg-linear-mid: rgba(30, 58, 95, 0.05);
  --hero-radial-navy: rgba(15, 23, 42, 0.12);
  --hero-radial-green: rgba(34, 197, 94, 0.06);
  --hero-mock-glow: rgba(15, 23, 42, 0.14);
  --cta-bg-end-navy: rgba(15, 23, 42, 0.06);
  --cta-bg-end-green: rgba(34, 197, 94, 0.04);
  --hero-title-end: var(--color-primary-light);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-root-light: var(--bg-root-dark);
    --bg-default-light: var(--bg-default-dark);
    --bg-secondary-light: var(--bg-secondary-dark);
    --bg-tertiary-light: var(--bg-tertiary-dark);
    --text-primary-light: var(--text-primary-dark);
    --text-secondary-light: var(--text-secondary-dark);
    --border-light: var(--border-dark);
    --glass-light: var(--glass-dark);
    --hero-bg-linear-start: rgba(10, 16, 32, 0.34);
    --hero-bg-linear-mid: rgba(30, 58, 95, 0.2);
    --hero-radial-navy: rgba(15, 23, 42, 0.42);
    --hero-radial-green: rgba(34, 197, 94, 0.12);
    --hero-mock-glow: rgba(15, 23, 42, 0.28);
    --cta-bg-end-navy: rgba(10, 16, 32, 0.24);
    --cta-bg-end-green: rgba(34, 197, 94, 0.08);
    --hero-title-end: var(--text-primary-dark);
  }
}

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

html {
  scroll-behavior: smooth;
}

html, body {
  height: 100%;
}

body.ak-root {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-primary-light);
  background: var(--bg-root-light);
  font-size: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.ak-main {
  flex: 1;
  padding-top: 70px;
}

.ak-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.ak-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--glass-light);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  z-index: 100;
  padding: var(--spacing-md) 0;
}

.ak-header .ak-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ak-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  flex: 0 0 15%;
}

.ak-logo img {
  width: 100%;
  height: auto;
  max-height: 60px;
  border-radius: 0;
  object-fit: contain;
  display: block;
}

.ak-logo-text {
  line-height: 1;
}

.ak-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.ak-nav a {
  color: var(--text-secondary-light);
  text-decoration: none;
  font-size: var(--font-small);
  font-weight: 500;
  transition: color 0.2s ease;
}

.ak-nav a:hover {
  color: var(--color-primary);
}

.ak-hero {
  padding: var(--spacing-xxxl) 0;
  background: linear-gradient(180deg, var(--hero-bg-linear-start) 0%, var(--hero-bg-linear-mid) 38%, transparent 72%);
  position: relative;
  overflow: hidden;
}

.ak-hero::before {
  content: '';
  position: absolute;
  top: -35%;
  left: -20%;
  right: -20%;
  width: 140%;
  height: 170%;
  background:
    radial-gradient(ellipse at 72% 26%, var(--hero-radial-navy) 0%, transparent 58%),
    radial-gradient(ellipse at 24% 70%, var(--hero-radial-green) 0%, transparent 54%);
  pointer-events: none;
}

.ak-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 1024px) {
  .ak-hero-grid {
    grid-template-columns: 1.2fr 1fr;
  }
}

.ak-hero-col {
  display: flex;
  flex-direction: column;
}

.ak-hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: fit-content;
  margin-bottom: var(--spacing-lg);
}

.ak-hero-title {
  font-size: var(--font-h1);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text-primary-light) 0%, var(--hero-title-end) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ak-hero-subtitle {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 500;
  color: var(--text-secondary-light);
  margin-bottom: var(--spacing-lg);
  line-height: 1.4;
}

.ak-hero-text {
  font-size: var(--font-body);
  color: var(--text-secondary-light);
  margin-bottom: var(--spacing-xl);
  max-width: 480px;
  line-height: 1.7;
}

.ak-price-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--glass-light);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-small);
  font-weight: 600;
  color: var(--text-primary-light);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.ak-hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  align-items: stretch;
}

.ak-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  height: 56px;
  padding: 0 var(--spacing-xl);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-body);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: none;
  min-width: 180px;
}

.ak-btn-primary {
  background: var(--color-primary-gradient);
  color: #fff;
  box-shadow: var(--shadow-md), 0 0 0 0 rgba(15, 23, 42, 0);
}

.ak-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.ak-btn-primary:active {
  transform: translateY(0);
}

.ak-btn-secondary {
  background: var(--glass-light);
  backdrop-filter: blur(10px);
  color: var(--text-primary-light);
  border: 1px solid var(--border-light);
}

.ak-btn-secondary:hover {
  background: var(--bg-secondary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.ak-btn-disabled {
  background: var(--bg-secondary-light);
  color: var(--text-secondary-light);
  border: 1px dashed var(--border-light);
  box-shadow: none;
  cursor: not-allowed;
  pointer-events: none;
  opacity: 0.75;
}

.ak-btn-disabled svg {
  opacity: 0.7;
}

.ak-hero-mock {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.ak-hero-mock::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--hero-mock-glow) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(40px);
}

.ak-hero-mock img {
  max-width: 100%;
  max-height: 500px;
  height: auto;
  display: block;
  filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.15));
  animation: float 6s ease-in-out infinite;
  position: relative;
  z-index: 1;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.ak-section {
  padding: var(--spacing-xxxl) 0;
  position: relative;
}

.ak-section--alt {
  background: var(--bg-default-light);
}

.ak-section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-xxl);
}

.ak-section-title {
  font-size: var(--font-h2);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
}

.ak-section-subtitle {
  font-size: var(--font-body);
  color: var(--text-secondary-light);
  line-height: 1.7;
}

.ak-card {
  background: var(--glass-light);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ak-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(30, 58, 95, 0.24);
}

.ak-card-title {
  font-size: var(--font-h3);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.01em;
}

.ak-card-text {
  color: var(--text-secondary-light);
  line-height: 1.6;
}

.ak-feature-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

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

.ak-feature-card {
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-xl);
}

.ak-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(34, 197, 94, 0.05) 100%);
  border-radius: var(--radius-md);
}

.ak-flow-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

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

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

.ak-flow-step {
  position: relative;
  text-align: center;
  padding: var(--spacing-xl);
}

.ak-flow-step .ak-card-title {
  font-size: var(--font-body);
  margin-bottom: var(--spacing-md);
}

.ak-flow {
  width: 100%;
  max-width: 120px;
  height: auto;
  margin: 0 auto;
  opacity: 0.8;
}

.ak-price-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
  max-width: 500px;
  margin: 0 auto;
}

.ak-price-card {
  text-align: center;
  padding: var(--spacing-xxl);
  background: var(--color-primary-gradient);
  color: white;
  border: none;
}

.ak-price-card .ak-card-title {
  font-size: var(--font-h2);
  margin-bottom: var(--spacing-xs);
}

.ak-price-card .ak-card-text {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-h4);
  margin-bottom: var(--spacing-xl);
}

.ak-price-features {
  text-align: left;
  margin-bottom: var(--spacing-xl);
}

.ak-price-features li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: rgba(255, 255, 255, 0.9);
}

.ak-price-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: white;
  border-radius: 50%;
}

.ak-price-card .ak-btn {
  background: white;
  color: var(--color-primary);
  width: 100%;
}

.ak-price-card .ak-btn:hover {
  background: var(--bg-default-light);
}

.ak-list {
  list-style: none;
  display: grid;
  gap: var(--spacing-md);
}

.ak-list-grid {
  grid-template-columns: 1fr;
}

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

.ak-feature-list li {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--glass-light);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all 0.2s ease;
}

.ak-feature-list li:hover {
  transform: translateX(4px);
  border-color: var(--color-primary);
}

.ak-feature-list li::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

.ak-cta {
  padding: var(--spacing-xxxl) 0;
  background: linear-gradient(180deg, var(--bg-default-light) 0%, var(--cta-bg-end-green) 58%, var(--cta-bg-end-navy) 100%);
  text-align: center;
}

.ak-cta-title {
  font-size: var(--font-h2);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
}

.ak-cta-btns {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.ak-cta-note {
  color: var(--text-secondary-light);
  margin-top: var(--spacing-lg);
  font-size: var(--font-small);
}

.ak-footer {
  border-top: 1px solid var(--border-light);
  background: var(--bg-root-light);
  padding: var(--spacing-xl) 0;
}

.ak-footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .ak-footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.ak-footer-links {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  justify-content: center;
}

.ak-footer a {
  color: var(--text-secondary-light);
  text-decoration: none;
  font-size: var(--font-small);
  transition: color 0.2s ease;
}

.ak-footer a:hover {
  color: var(--color-primary);
}

.ak-copy {
  color: var(--text-secondary-light);
  font-size: 11px;
  opacity: 0.5;
  text-align: center;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-light);
}

.ak-footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.ak-footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary-light);
  transition: all 0.2s ease;
}

.ak-footer-social a:hover {
  background: var(--color-primary);
}

.ak-footer-social a:hover img {
  filter: brightness(0) invert(1);
}

.ak-footer-social img {
  width: 18px;
  height: 18px;
  opacity: 0.7;
}

.ak-animate {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

.ak-animate:nth-child(1) { animation-delay: 0.1s; }
.ak-animate:nth-child(2) { animation-delay: 0.2s; }
.ak-animate:nth-child(3) { animation-delay: 0.3s; }
.ak-animate:nth-child(4) { animation-delay: 0.4s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 767px) {
  .ak-header .ak-container {
    justify-content: center;
  }

  .ak-nav {
    display: none;
  }

  .ak-logo {
    flex: 0 0 60%;
  }

  .ak-logo {
    justify-content: center;
  }

  .ak-logo img {
    max-height: 72px;
  }
  
  .ak-hero {
    padding: calc(var(--spacing-xxl) + 60px) 0 var(--spacing-xxl);
    text-align: center;
  }
  
  .ak-hero-col {
    align-items: center;
  }
  
  .ak-hero-text {
    text-align: center;
  }
  
  .ak-hero-actions {
    justify-content: center;
    width: 100%;
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .ak-btn {
    width: 100%;
    min-width: 0;
  }
  
  .ak-section {
    padding: var(--spacing-xxl) 0;
  }
  
  .ak-section-title {
    text-align: center;
  }
}

.ak-cookie {
  position: fixed;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1000;
}

.ak-cookie .ak-container {
  background: var(--glass-light);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  box-shadow: var(--shadow-lg);
}

.ak-cookie-text {
  font-size: var(--font-small);
  color: var(--text-secondary-light);
}

.ak-cookie .ak-btn {
  height: 40px;
  padding: 0 var(--spacing-lg);
  font-size: var(--font-small);
}

@media (prefers-color-scheme: dark) {
  .ak-logo,
  .ak-nav a:hover,
  .ak-footer a:hover,
  .ak-price-badge {
    color: var(--text-primary-light);
  }

  .ak-feature-list li:hover {
    border-color: rgba(248, 250, 252, 0.35);
  }

  .ak-footer-social a:hover {
    background: var(--color-primary-light);
  }
}