:root {
  --color-bg: #F8F7F4;
  --color-surface: #FFFFFF;
  --color-text: #2F3E46;
  --color-text-muted: #5C6B73;
  
  /* Primary Soft Terracotta */
  --color-primary: #D98A6C;
  --color-primary-hover: #C27A5F;
  --color-primary-light: #FBEFEA;
  
  /* Secondary Sage Green */
  --color-secondary: #9BB098;
  --color-secondary-light: #EBF0EA;
  
  /* Accent Muted Yellow */
  --color-accent: #E9C46A;
  --color-accent-light: #FDF7E7;
  
  --color-border: #E8E5E1;
  
  --font-sans: ui-rounded, "SF Pro Rounded", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --radius-full: 9999px;

  --shadow-soft: 0 10px 40px rgba(47, 62, 70, 0.04);
  --shadow-hover: 0 12px 48px rgba(47, 62, 70, 0.08);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease-out;
  font-weight: 500;
}

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

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

h1, h2, h3, h4 {
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: var(--spacing-4);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
}

p {
  margin-bottom: var(--spacing-4);
  font-size: 1.1rem;
}

ul {
  margin-bottom: var(--spacing-4);
  padding-left: var(--spacing-6);
  font-size: 1.1rem;
}

li {
  margin-bottom: var(--spacing-2);
}

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

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.hidden {
  display: none !important;
}

/* Header */
header {
  padding: var(--spacing-6) 0;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(47, 62, 70, 0.02);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-text);
}

.brand:hover {
  color: var(--color-text);
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  gap: var(--spacing-6);
}

.nav-links a {
  color: var(--color-text-muted);
  font-weight: 600;
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links a.active {
  color: var(--color-primary);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--spacing-16) 0 var(--spacing-12);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-4);
}

.badge {
  display: inline-block;
  background-color: var(--color-primary-light);
  color: var(--color-primary-hover);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: var(--spacing-2);
}

.hero h1 {
  max-width: 800px;
  margin: 0 auto;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.35rem);
  color: var(--color-text-muted);
  max-width: 680px;
  margin: var(--spacing-2) auto var(--spacing-8);
}

.hero-image-wrapper {
  margin: 0 auto;
  max-width: 600px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  border: 4px solid #FFFFFF;
}

/* Demo Section */
.demo-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-12) var(--spacing-6);
  margin-top: var(--spacing-16);
  margin-bottom: var(--spacing-16);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
  text-align: center;
}

.demo-header {
  margin-bottom: var(--spacing-8);
}

.demo-header h2 {
  margin-bottom: var(--spacing-2);
}

.demo-badge {
  display: inline-block;
  background-color: var(--color-secondary-light);
  color: #5D705B;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.demo-game-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--color-bg);
  padding: var(--spacing-8);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--color-border);
}

.game-prompt {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--color-text);
  margin-bottom: var(--spacing-8);
}

.highlight-word {
  color: var(--color-primary);
  font-weight: 800;
  background: var(--color-primary-light);
  padding: 0 12px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.game-objects {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
}

.object-card {
  background: var(--color-surface);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  width: 90px;
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(47, 62, 70, 0.05);
  color: var(--color-text-muted);
}

@media (min-width: 600px) {
  .object-card {
    width: 100px;
    height: 100px;
  }
}

.object-card:hover:not(:disabled) {
  transform: translateY(-4px);
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  box-shadow: var(--shadow-hover);
}

.object-card.success {
  background: var(--color-secondary-light);
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  transform: scale(1.05);
  box-shadow: var(--shadow-hover);
  z-index: 2;
}

.object-card:disabled {
  opacity: 0.4;
  cursor: default;
  transform: none;
}

.object-card.success:disabled {
  opacity: 1;
}

.icon-wrapper svg {
  width: 44px;
  height: 44px;
}

.game-feedback {
  min-height: 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-6);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.game-feedback.show {
  opacity: 1;
}

.game-feedback.success-text {
  color: var(--color-secondary);
}

.game-feedback.hint-text {
  color: var(--color-text-muted);
}

.btn-primary {
  background: var(--color-primary);
  color: #FFFFFF;
  border: none;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(217, 138, 108, 0.3);
}

@keyframes gentleShake {
  0% { transform: translateX(0); }
  25% { transform: translateX(-4px) rotate(-2deg); }
  50% { transform: translateX(4px) rotate(2deg); }
  75% { transform: translateX(-4px) rotate(-2deg); }
  100% { transform: translateX(0); }
}

.gentle-shake {
  animation: gentleShake 0.4s ease-in-out;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-8);
  margin-top: var(--spacing-16);
}

.feature-card {
  background-color: var(--color-surface);
  padding: var(--spacing-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-4);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.sage-bg {
  background-color: var(--color-secondary-light);
  color: var(--color-secondary);
}

.coral-bg {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.yellow-bg {
  background-color: var(--color-accent-light);
  color: #D9A01B;
}

/* Gallery Section */
.gallery-section {
  margin-top: var(--spacing-16);
  padding-top: var(--spacing-12);
  border-top: 1px solid var(--color-border);
}

.gallery-section h2 {
  text-align: center;
}

.section-desc {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--spacing-8);
  font-size: 1.15rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: minmax(0, 360px);
  justify-content: center;
  gap: var(--spacing-8);
}

.screenshot-card {
  min-width: 0;
}

.screenshot-card[hidden] {
  display: none;
}

.img-wrapper {
  position: relative;
  background-color: #161a1e;
  border-radius: 46px;
  overflow: hidden;
  margin-bottom: var(--spacing-8);
  border: 9px solid #202428;
  padding-top: 23px;
  padding-bottom: 18px;
  box-shadow: 0 0 0 2px #7b8185, 0 24px 45px -15px #26323855;
}

.img-wrapper::before {
  content: '';
  position: absolute;
  top: 7px;
  left: calc(50% - 28px);
  width: 56px;
  height: 5px;
  border-radius: 10px;
  background: #41484d;
}

.img-wrapper::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 35%;
  width: 30%;
  height: 4px;
  border-radius: 10px;
  background: #e6e8e9;
}

.preview-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 24px;
}

.preview-controls[hidden] { display: none; }

.preview-controls button {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 26px;
  cursor: pointer;
}

.preview-controls button:hover {
  background: var(--color-bg);
}

.screenshot-card img {
  width: 100%;
  height: auto;
  display: block;
}

.screenshot-card figcaption {
  font-weight: 700;
  color: var(--color-text);
  font-size: 1.15rem;
  text-align: center;
}

.preview-badge {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-top: var(--spacing-1);
}

/* Practice Content */
.practice-content {
  margin-top: var(--spacing-16);
}

.practice-content h2 {
  text-align: center;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
  margin-top: var(--spacing-8);
}

@media (min-width: 768px) {
  .content-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.content-column h3 {
  color: var(--color-primary);
}

.disclaimer-card, .alert-box {
  background-color: var(--color-surface);
  border-left: 6px solid var(--color-secondary);
  padding: var(--spacing-8);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  margin-top: var(--spacing-8);
  box-shadow: var(--shadow-soft);
}

.disclaimer-card h3 {
  color: var(--color-text);
}

.alert-box.legacy {
  border-left-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.contact-card {
  background-color: var(--color-surface);
  padding: var(--spacing-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.disclaimer-bottom {
  margin-top: var(--spacing-8);
}

/* Legal Pages (Privacy, Support) */
.content-page {
  max-width: 800px;
  margin: var(--spacing-12) auto;
  padding: var(--spacing-8);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.content-header {
  margin-bottom: var(--spacing-12);
  text-align: center;
}

.content-header h1 {
  margin-bottom: var(--spacing-2);
}

.content-body h2 {
  margin-top: var(--spacing-12);
  padding-bottom: var(--spacing-2);
  border-bottom: 2px solid var(--color-border);
}

.content-body h3 {
  margin-top: var(--spacing-8);
  font-size: 1.4rem;
}

/* Footer */
footer {
  margin-top: var(--spacing-16);
  padding: var(--spacing-12) 0;
  text-align: center;
  color: var(--color-text-muted);
}

.footer-links {
  margin-top: var(--spacing-2);
}

.footer-links a {
  color: var(--color-text-muted);
}

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

.divider {
  margin: 0 var(--spacing-2);
  opacity: 0.5;
}

@media (max-width: 768px) {
  .nav-links {
    gap: var(--spacing-4);
  }
  .nav-links a {
    font-size: 0.95rem;
  }
  .content-page {
    border-radius: 0;
    box-shadow: none;
    margin-top: var(--spacing-6);
    background: transparent;
    padding: 0;
  }
  .demo-game-container {
    padding: var(--spacing-4);
  }
}