@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap');

/* --- Design Tokens & Variables --- */
:root {
  --font-family: 'Nunito', system-ui, -apple-system, sans-serif;
  
  /* Color Palette (Ported from Mobile Theme) */
  --color-page-bg: #E8DDD4;
  --color-surface: #FAF5EF;
  --color-surface-white: #FFFFFF;
  --color-welcome-bg-top: #FDF0E6;
  --color-welcome-bg-bottom: #FAF5EF;
  --color-chip-bg: #F5EDE6;
  --color-hover: #FFF8F4;
  
  --color-primary: #B85C38;
  --color-primary-hover: #9E4926;
  --color-primary-soft: rgba(184, 92, 56, 0.15);
  --color-primary-light: rgba(184, 92, 56, 0.08);
  
  --color-text-dark: #3D2010;
  --color-text-mid: #6B4030;
  --color-text-light: #9E8070;
  --color-text-faint: #B8A090;
  
  --color-border: #EDD8C8;
  --color-border-opt: #DDD0C4;
  
  --color-correct: #6AAB78;
  --color-correct-bg: #EFF7F0;
  --color-correct-text: #2E6B3E;
  --color-wrong: #C0392B;
  --color-wrong-bg: #FBF0EE;
  --color-backdrop: rgba(50, 25, 10, 0.55);
  
  /* Premium Accents */
  --color-gold: #D4AF37;
  --color-gold-bg: #FFF1E0;
  --color-gold-border: #FFD39B;
  
  /* Shadows & Radius */
  --shadow-sm: 0 2px 8px rgba(61, 32, 16, 0.05);
  --shadow-md: 0 8px 24px rgba(61, 32, 16, 0.08);
  --shadow-lg: 0 16px 40px rgba(61, 32, 16, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 99px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Base & Reset --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-surface);
  color: var(--color-text-mid);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  color: var(--color-text-dark);
  font-weight: 800;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul {
  list-style: none;
}

/* --- Layout Container --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(250, 245, 239, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  background-color: rgba(250, 245, 239, 0.95);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.logo-text {
  font-size: 26px;
  font-weight: 900;
  color: var(--color-text-dark);
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-weight: 700;
  color: var(--color-text-mid);
  font-size: 15px;
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text-dark);
}

.nav-link:hover::after {
  width: 100%;
}

.btn-nav-cta {
  background-color: var(--color-primary);
  color: #FFFFFF !important;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(184, 92, 56, 0.2);
  transition: all var(--transition-fast);
}

.btn-nav-cta:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(184, 92, 56, 0.3);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--color-text-dark);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* --- Hero Section --- */
.hero {
  padding: 160px 0 100px;
  background: linear-gradient(180deg, var(--color-welcome-bg-top) 0%, var(--color-welcome-bg-bottom) 100%);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background: linear-gradient(to top, var(--color-surface), transparent);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  max-width: 580px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-gold-bg);
  border: 1px solid var(--color-gold-border);
  color: var(--color-primary);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 24px;
  gap: 6px;
}

.hero-title {
  font-size: 48px;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title span {
  color: var(--color-primary);
}

.hero-desc {
  font-size: 17px;
  color: var(--color-text-mid);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  background-color: #111111;
  color: #FFFFFF;
  padding: 10px 24px;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-fast);
}

.store-badge:hover {
  background-color: #222222;
  transform: translateY(-2px);
  color: #FFFFFF;
  box-shadow: var(--shadow-md);
}

.store-badge svg {
  width: 22px;
  height: 22px;
  margin-right: 12px;
  fill: currentColor;
}

.store-badge-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.store-badge-subtitle {
  font-size: 9px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.7;
}

.store-badge-title {
  font-size: 15px;
  font-weight: 700;
}

.btn-secondary-web {
  padding: 12px 28px;
  border-radius: 12px;
  font-weight: 800;
  background-color: var(--color-surface-white);
  border: 2px solid var(--color-border);
  color: var(--color-text-mid);
  transition: all var(--transition-fast);
}

.btn-secondary-web:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* --- Features Section --- */
.features {
  padding: 80px 0;
  background-color: var(--color-surface-white);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 56px;
}

.section-subtitle {
  color: var(--color-primary);
  text-transform: uppercase;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--color-text-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
}

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  background-color: var(--color-surface-white);
}

.feature-icon-container {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--color-welcome-bg-top);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text-dark);
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-mid);
  line-height: 1.6;
}

/* --- Interactive App Section --- */
.live-demo {
  padding: 80px 0;
  background-color: var(--color-surface);
}

.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.demo-info h2 {
  font-size: 36px;
  margin-bottom: 20px;
  line-height: 1.25;
}

.demo-info p {
  font-size: 16px;
  margin-bottom: 30px;
}

.demo-step {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.demo-step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
}

.demo-step-text h4 {
  font-size: 16px;
  color: var(--color-text-dark);
  margin-bottom: 4px;
}

.demo-step-text p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  margin: 0;
}

/* --- Simulated Mobile Phone Mockup --- */
.phone-mockup-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.phone-shadow {
  position: absolute;
  width: 90%;
  height: 95%;
  background: radial-gradient(ellipse at center, rgba(61, 32, 16, 0.25) 0%, transparent 70%);
  bottom: -4%;
  filter: blur(10px);
  z-index: 1;
}

.phone-frame {
  width: 320px;
  height: 640px;
  background-color: #1c100b; /* Deep brown premium metal frame */
  border-radius: 40px;
  padding: 12px;
  box-shadow: 0 25px 60px -10px rgba(61, 32, 16, 0.4), inset 0 2px 6px rgba(255, 255, 255, 0.2);
  position: relative;
  z-index: 2;
  border: 4px solid #3d2010;
}

/* Speaker Notch */
.phone-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 130px;
  height: 24px;
  background-color: #1c100b;
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 16px;
  z-index: 100;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background-color: var(--color-welcome-bg-top);
  border-radius: 30px;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

/* Screen States (Rendered inside CSS Phone) */
.screen-state {
  display: none;
  flex: 1;
  flex-direction: column;
  width: 100%;
  height: 100%;
}

.screen-state.active {
  display: flex;
}

/* --- App View styles (similar to mobile CSS) --- */
/* Welcome Screen View */
.app-welcome {
  justify-content: space-between;
  align-items: center;
  padding: 50px 20px 24px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-welcome-bg-top) 0%, var(--color-welcome-bg-bottom) 100%);
}

.app-logo {
  width: 140px;
  height: 140px;
  margin-top: 20px;
  object-fit: contain;
}

.app-name {
  font-size: 28px;
  font-weight: 900;
  color: var(--color-text-dark);
  margin-top: 8px;
  letter-spacing: 0.5px;
}

.app-sub {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  margin-top: 4px;
}

.app-welcome-card {
  background-color: var(--color-surface-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  width: 100%;
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.app-welcome-row {
  display: flex;
  align-items: center;
  gap: 4px;
}

.app-welcome-zh {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-dark);
}

.app-welcome-blank {
  background-color: var(--color-chip-bg);
  border-radius: 4px;
  padding: 2px 10px;
  color: var(--color-primary);
  font-weight: 800;
  font-size: 16px;
}

.app-welcome-hint {
  font-size: 10px;
  color: var(--color-text-light);
  margin-top: 4px;
}

.app-btn-cta {
  background-color: var(--color-primary);
  color: #FFFFFF;
  width: 100%;
  padding: 13px;
  border-radius: var(--radius-md);
  font-weight: 800;
  font-size: 13px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(184, 92, 56, 0.2);
  transition: all var(--transition-fast);
}

.app-btn-cta:hover {
  background-color: var(--color-primary-hover);
}

.app-welcome-badge {
  margin-top: 12px;
  background-color: var(--color-chip-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 10px;
  font-weight: 800;
  color: var(--color-text-dark);
}

/* Quiz Screen View */
.app-header {
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
  margin-top: 12px; /* avoid notch overlay */
}

.app-header-close {
  font-size: 18px;
  color: var(--color-text-light);
  cursor: pointer;
}

.app-header-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--color-text-dark);
}

.app-header-progress {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-light);
}

.app-progress-bar {
  position: absolute;
  top: 60px;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--color-chip-bg);
}

.app-progress-fill {
  width: 33.3%;
  height: 100%;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

.app-quiz-body {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--color-surface);
}

.app-quiz-card {
  background-color: var(--color-surface-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-grow: 1;
  justify-content: center;
  margin-bottom: 16px;
}

.app-topic-tag {
  background-color: var(--color-chip-bg);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  font-size: 10px;
  font-weight: 700;
  color: var(--color-text-mid);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.app-quiz-img {
  width: 90px;
  height: 90px;
  object-fit: contain;
  margin-bottom: 8px;
}

.app-quiz-zh {
  font-size: 32px;
  font-weight: 900;
  color: var(--color-text-dark);
  margin-bottom: 2px;
}

.app-quiz-pin {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 2px;
}

.app-quiz-en {
  font-size: 12px;
  color: var(--color-text-light);
}

.app-quiz-question-prompt {
  font-size: 12px;
  font-weight: 800;
  color: var(--color-text-mid);
  text-align: center;
  margin-bottom: 8px;
}

.app-quiz-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.app-option-btn {
  background-color: var(--color-surface-white);
  border: 1.5px solid var(--color-border-opt);
  border-radius: var(--radius-md);
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.app-option-btn:hover {
  background-color: var(--color-hover);
  border-color: var(--color-primary);
}

.app-option-btn-zh {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text-dark);
}

.app-option-btn-pin {
  font-size: 10px;
  color: var(--color-text-light);
}

/* Feedback sheets inside mobile app screen */
.app-feedback-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-backdrop);
  backdrop-filter: blur(4px);
  display: none;
  align-items: flex-end;
  z-index: 10;
  border-radius: 30px;
}

.app-feedback-overlay.active {
  display: flex;
}

.app-feedback-sheet {
  width: 100%;
  background-color: var(--color-surface-white);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  padding: 20px;
  box-shadow: 0 -4px 16px rgba(61, 32, 16, 0.15);
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.app-sheet-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.app-sheet-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-correct-bg);
  color: var(--color-correct);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
}

.app-sheet-title {
  font-size: 15px;
  font-weight: 900;
  color: var(--color-correct-text);
}

.app-sheet-divider {
  height: 1px;
  background-color: var(--color-border);
  margin-bottom: 12px;
}

.app-sheet-phrase {
  font-size: 22px;
  font-weight: 900;
  color: var(--color-text-dark);
  text-align: center;
  margin-bottom: 2px;
}

.app-sheet-pinyin {
  font-size: 12px;
  color: var(--color-text-light);
  text-align: center;
  margin-bottom: 10px;
}

.app-sheet-example {
  font-size: 12px;
  color: var(--color-text-mid);
  text-align: center;
  line-height: 1.5;
  margin-bottom: 16px;
  background-color: var(--color-chip-bg);
  padding: 8px;
  border-radius: var(--radius-sm);
}

/* Inline Hint (For Wrong Choice) */
.app-inline-hint-box {
  display: none;
  background-color: var(--color-wrong-bg);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px;
  margin-top: 12px;
  text-align: center;
}

.app-inline-hint-box.active {
  display: block;
}

.app-inline-hint-text {
  font-size: 11px;
  color: var(--color-wrong);
  font-weight: 700;
  line-height: 1.4;
}

.app-btn-wrong-action {
  width: 100%;
  margin-top: 12px;
  background-color: var(--color-primary);
  color: #FFFFFF;
  padding: 11px;
  border-radius: var(--radius-md);
  font-weight: 800;
  font-size: 12px;
  border: none;
  cursor: pointer;
}

/* Option State modifiers in Mini App Game */
.app-option-btn.correct-choice {
  background-color: var(--color-correct-bg) !important;
  border-color: var(--color-correct) !important;
}
.app-option-btn.correct-choice .app-option-btn-zh {
  color: var(--color-correct-text) !important;
}

.app-option-btn.wrong-choice {
  background-color: var(--color-wrong-bg) !important;
  border-color: var(--color-wrong) !important;
}
.app-option-btn.wrong-choice .app-option-btn-zh {
  color: var(--color-wrong) !important;
}

.app-option-btn.dimmed {
  opacity: 0.4;
  pointer-events: none;
}

/* Result Screen View */
.app-result {
  justify-content: space-between;
  align-items: center;
  padding: 50px 20px 24px;
  text-align: center;
  background-color: var(--color-welcome-bg-top);
}

.app-result-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--color-correct-bg);
  color: var(--color-correct);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  margin: 10px 0;
  border: 2px solid var(--color-correct);
}

.app-result-title {
  font-size: 20px;
  font-weight: 900;
  color: var(--color-text-dark);
  margin-bottom: 2px;
}

.app-result-sub {
  font-size: 11px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.app-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  width: 100%;
  margin-bottom: 16px;
}

.app-result-cell {
  background-color: var(--color-surface-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.app-result-cell-val {
  font-size: 16px;
  font-weight: 900;
  color: var(--color-text-dark);
}

.app-result-cell-lbl {
  font-size: 8px;
  font-weight: 800;
  color: var(--color-text-light);
  text-transform: uppercase;
  margin-top: 2px;
}

.app-review-section {
  width: 100%;
  text-align: left;
  margin-bottom: 16px;
  flex: 1;
  overflow-y: auto;
  max-height: 120px;
}

.app-review-title {
  font-size: 9px;
  font-weight: 800;
  color: var(--color-text-light);
  text-transform: uppercase;
  margin-bottom: 4px;
  letter-spacing: 0.5px;
}

.app-review-item {
  background-color: var(--color-surface-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-review-left {
  display: flex;
  flex-direction: column;
}

.app-review-zh {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-dark);
}

.app-review-en {
  font-size: 10px;
  color: var(--color-text-light);
}

.app-review-mw {
  font-size: 13px;
  font-weight: 800;
  color: var(--color-correct-text);
}

.app-result-actions {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.app-btn-secondary {
  background: none;
  border: 1.5px solid var(--color-border);
  color: var(--color-text-mid);
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-md);
  font-weight: 800;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.app-btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* --- Pricing Section --- */
.pricing {
  padding: 80px 0;
  background-color: var(--color-surface-white);
}

.pricing-grid {
  display: flex;
  justify-content: center;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  flex: 1;
  max-width: 420px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.pricing-card.premium-card {
  background-color: var(--color-welcome-bg-top);
  border: 2px solid var(--color-gold-border);
  box-shadow: var(--shadow-md);
}

.pricing-card.premium-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}

.pricing-card:hover:not(.premium-card) {
  transform: translateY(-6px);
  border-color: var(--color-text-light);
  box-shadow: var(--shadow-md);
}

.pricing-card-header {
  margin-bottom: 24px;
}

.pricing-card-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background-color: var(--color-gold);
  color: #FFFFFF;
  font-size: 10px;
  font-weight: 900;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-name {
  font-size: 22px;
  color: var(--color-text-dark);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 40px;
  font-weight: 900;
  color: var(--color-text-dark);
  line-height: 1.1;
  margin-bottom: 6px;
}

.pricing-price span {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-light);
  text-transform: uppercase;
}

.pricing-desc {
  font-size: 14px;
  color: var(--color-text-light);
}

.pricing-features {
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
}

.pricing-feature-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-correct);
  margin-top: 2px;
  flex-shrink: 0;
}

.pricing-feature-item.disabled-item {
  color: var(--color-text-faint);
}

.pricing-feature-item.disabled-item svg {
  color: var(--color-text-faint);
}

.btn-pricing {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  font-weight: 800;
  text-align: center;
  transition: all var(--transition-fast);
}

.btn-pricing-free {
  background-color: var(--color-surface-white);
  border: 2px solid var(--color-border);
  color: var(--color-text-mid);
}

.btn-pricing-free:hover {
  border-color: var(--color-text-dark);
  color: var(--color-text-dark);
}

.btn-pricing-premium {
  background-color: var(--color-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(184, 92, 56, 0.2);
}

.btn-pricing-premium:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 6px 16px rgba(184, 92, 56, 0.3);
  color: #FFFFFF;
}

.pricing-upcoming-label {
  margin-top: 32px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-gold-bg);
  border: 1px solid var(--color-gold-border);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  text-align: center;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: var(--shadow-sm);
}

/* --- Contact Us Section --- */
.contact {
  padding: 80px 0;
  background-color: var(--color-surface);
}

.contact-card {
  background-color: var(--color-surface-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 56px;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.contact-card h2 {
  font-size: 32px;
  margin-bottom: 16px;
}

.contact-card p {
  font-size: 16px;
  max-width: 540px;
  margin: 0 auto 36px;
  color: var(--color-text-light);
}

.contact-details {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text-dark);
}

.contact-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-welcome-bg-top);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-contact {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-primary);
  color: #FFFFFF !important;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(184, 92, 56, 0.2);
  transition: all var(--transition-fast);
}

.btn-contact:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(184, 92, 56, 0.3);
}

/* --- Footer --- */
.footer {
  background-color: var(--color-text-dark);
  color: var(--color-chip-bg);
  padding: 60px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  color: #FFFFFF;
  font-size: 22px;
  font-weight: 900;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-text-light);
  max-width: 300px;
  line-height: 1.6;
}

.footer-title {
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: var(--color-text-light);
  font-size: 14px;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 13px;
  color: var(--color-text-faint);
  flex-wrap: wrap;
  gap: 16px;
}

/* --- Privacy Page Specific --- */
.privacy-page {
  padding-top: 140px;
  padding-bottom: 80px;
}

.privacy-content {
  background-color: var(--color-surface-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 56px;
  max-width: 900px;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.privacy-title {
  font-size: 40px;
  margin-bottom: 8px;
}

.privacy-updated {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 16px;
}

.privacy-section {
  margin-bottom: 32px;
}

.privacy-section h2 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--color-text-dark);
}

.privacy-section p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-mid);
  margin-bottom: 16px;
}

.privacy-section ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 16px;
  font-size: 15px;
  color: var(--color-text-mid);
}

.privacy-section li {
  margin-bottom: 8px;
}

/* --- Responsive Media Queries --- */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  
  .hero-content {
    max-width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hero-title {
    font-size: 40px;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .demo-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .demo-info {
    order: -1;
    text-align: center;
  }
  
  .demo-step {
    justify-content: flex-start;
    text-align: left;
  }
  
  .pricing-grid {
    flex-direction: column;
    align-items: center;
  }
  
  .pricing-card {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--color-surface);
    flex-direction: column;
    padding: 40px 24px;
    gap: 24px;
    transition: left var(--transition-normal);
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
  
  .hero {
    padding-top: 120px;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 16px;
  }
  
  .store-badge, .btn-secondary-web {
    width: 100%;
    justify-content: center;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-card {
    padding: 32px 20px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .privacy-content {
    padding: 32px 20px;
  }
  
  .privacy-title {
    font-size: 30px;
  }
}