/* ==========================================================================
   MandarinTone Pop Art Design System & Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  /* Pop Art Color Tokens */
  --pop-bg: #FDFBF7;
  --pop-card: #FFFFFF;
  --pop-yellow: #FFE600;
  --pop-black: #1A1A1A;
  --pop-pink: #FF007F;
  --pop-green: #00E676;
  --pop-orange: #FF9100;
  --pop-red: #FF1744;
  --pop-blue: #00B0FF;
  --pop-purple: #7C4DFF;
  --pop-gray-bg: #F4F0E8;
  --pop-muted: #666666;

  /* Elevation & Border Tokens */
  --border-width: 2.5px;
  --border-bold: 3px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 9999px;
  
  --shadow-sm: 2px 2px 0px var(--pop-black);
  --shadow-md: 4px 4px 0px var(--pop-black);
  --shadow-lg: 6px 6px 0px var(--pop-black);
  --shadow-xl: 8px 8px 0px var(--pop-black);
  --shadow-hover: 6px 6px 0px var(--pop-black);

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--pop-bg);
  color: var(--pop-black);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* Halftone / Comic Dot Background Pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-image: radial-gradient(var(--pop-black) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.035;
  pointer-events: none;
  z-index: -1;
}

/* Typography Helpers */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.15;
  color: var(--pop-black);
  letter-spacing: -0.02em;
}

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

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar-wrapper {
  position: sticky;
  top: 16px;
  z-index: 100;
  padding: 0 16px;
}

.navbar {
  max-width: 1140px;
  margin: 0 auto;
  background: var(--pop-card);
  border: var(--border-width) solid var(--pop-black);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(12px);
}

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

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 2px solid var(--pop-black);
  box-shadow: 2px 2px 0px var(--pop-black);
  object-fit: cover;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand-link:hover .brand-icon {
  transform: rotate(-4deg) scale(1.05);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-pill {
  font-size: 0.72rem;
  font-weight: 700;
  background: var(--pop-yellow);
  color: var(--pop-black);
  padding: 2px 8px;
  border: 1.5px solid var(--pop-black);
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-weight: 700;
  font-size: 0.95rem;
  transition: color 0.15s;
}

.nav-link:hover {
  color: var(--pop-pink);
}

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

.lang-btn {
  background: var(--pop-bg);
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-weight: 800;
  font-size: 0.85rem;
  cursor: pointer;
  box-shadow: 2px 2px 0px var(--pop-black);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
}

.lang-btn:hover {
  background: var(--pop-yellow);
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0px var(--pop-black);
}

.lang-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 0px 0px 0px var(--pop-black);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  border: var(--border-width) solid var(--pop-black);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.15s;
  text-align: center;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 0px 0px 0px var(--pop-black);
}

.btn-primary {
  background-color: var(--pop-yellow);
  color: var(--pop-black);
}

.btn-primary:hover {
  background-color: #ffe81a;
}

.btn-secondary {
  background-color: var(--pop-card);
  color: var(--pop-black);
}

.btn-pink {
  background-color: var(--pop-pink);
  color: #FFFFFF;
}

.btn-green {
  background-color: var(--pop-green);
  color: var(--pop-black);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.88rem;
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 70px 0 60px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 4px 12px;
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-pill);
  box-shadow: 2px 2px 0px var(--pop-black);
}

.tag-badge.badge-offline {
  background: var(--pop-green);
  color: var(--pop-black);
}

.tag-badge.badge-privacy {
  background: var(--pop-pink);
  color: #FFFFFF;
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 3.8rem);
  line-height: 1.08;
  margin-bottom: 20px;
}

.hero-title .highlight-yellow {
  background: var(--pop-yellow);
  padding: 0 8px;
  border: 2.5px solid var(--pop-black);
  border-radius: 8px;
  box-shadow: 3px 3px 0px var(--pop-black);
  display: inline-block;
  transform: rotate(-1.5deg);
}

.hero-title .highlight-pink {
  background: var(--pop-pink);
  color: #fff;
  padding: 0 8px;
  border: 2.5px solid var(--pop-black);
  border-radius: 8px;
  box-shadow: 3px 3px 0px var(--pop-black);
  display: inline-block;
  transform: rotate(1.2deg);
}

.hero-description {
  font-size: 1.15rem;
  color: #333333;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.privacy-badge-banner {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: var(--pop-card);
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-md);
  box-shadow: 3px 3px 0px var(--pop-black);
  font-size: 0.9rem;
  font-weight: 700;
}

.privacy-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--pop-green);
  border: 1.5px solid var(--pop-black);
  box-shadow: 0 0 6px var(--pop-green);
}

/* Hero Right Side: App Visual Showcase */
.hero-card-stack {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-main-card {
  width: 100%;
  max-width: 380px;
  background: var(--pop-card);
  border: var(--border-bold) solid var(--pop-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.hero-main-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background: repeating-linear-gradient(
    45deg,
    var(--pop-yellow),
    var(--pop-yellow) 10px,
    var(--pop-black) 10px,
    var(--pop-black) 20px
  );
  border-bottom: 2px solid var(--pop-black);
}

.card-app-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
  margin-bottom: 20px;
}

.card-app-icon {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  border: 2.5px solid var(--pop-black);
  box-shadow: 3px 3px 0px var(--pop-black);
  object-fit: cover;
}

.card-app-text h3 {
  font-size: 1.3rem;
}

.card-app-text p {
  font-size: 0.85rem;
  color: var(--pop-muted);
  font-weight: 600;
}

/* Tone Mini Showcase in Hero */
.hero-pinyin-box {
  background: var(--pop-gray-bg);
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 18px;
  text-align: center;
}

.hero-pinyin-chinese {
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: 4px;
  margin-bottom: 4px;
}

.hero-pinyin-letters {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pop-pink);
}

.hero-score-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--pop-yellow);
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-weight: 800;
  font-size: 0.9rem;
}

/* Floating Starburst Badge */
.starburst {
  position: absolute;
  top: -16px;
  right: -16px;
  background: var(--pop-pink);
  color: #fff;
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  font-size: 0.78rem;
  font-weight: 900;
  transform: rotate(12deg);
  box-shadow: 3px 3px 0px var(--pop-black);
}

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

.section-alt {
  background: #FFFDF9;
  border-top: var(--border-bold) solid var(--pop-black);
  border-bottom: var(--border-bold) solid var(--pop-black);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 800;
  background: var(--pop-yellow);
  border: 2px solid var(--pop-black);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  box-shadow: 2px 2px 0px var(--pop-black);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.6rem);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.05rem;
  color: #444;
}

/* ==========================================================================
   Interactive Tone Pitch Simulator
   ========================================================================== */
.interactive-simulator {
  background: var(--pop-card);
  border: var(--border-bold) solid var(--pop-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 36px;
  margin: 0 auto;
}

.tone-selector-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.tone-btn {
  background: var(--pop-bg);
  border: var(--border-width) solid var(--pop-black);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  text-align: center;
  position: relative;
}

.tone-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

.tone-btn.active {
  background: var(--pop-yellow);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0px var(--pop-black);
  border-width: 3px;
}

.tone-num {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--pop-muted);
}

.tone-char {
  font-size: 1.8rem;
  font-weight: 900;
  margin: 4px 0;
}

.tone-pinyin {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--pop-pink);
}

.tone-curve-hint {
  font-size: 0.78rem;
  font-weight: 700;
  color: #555;
  margin-top: 4px;
}

.simulator-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
  background: var(--pop-gray-bg);
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-md);
  padding: 24px;
}

.pitch-canvas-wrapper {
  background: #FFFFFF;
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-sm);
  padding: 16px;
  box-shadow: 3px 3px 0px var(--pop-black);
  position: relative;
}

.pitch-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.pitch-graph {
  width: 100%;
  height: 160px;
  display: block;
}

.pitch-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pitch-card-title {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.pitch-card-desc {
  font-size: 0.95rem;
  color: #444;
}

.pitch-stats-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.pitch-stat-pill {
  background: #FFFFFF;
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  box-shadow: 2px 2px 0px var(--pop-black);
}

.pitch-stat-label {
  font-size: 0.72rem;
  color: var(--pop-muted);
  font-weight: 700;
  text-transform: uppercase;
}

.pitch-stat-value {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.05rem;
}

/* ==========================================================================
   Tongue Twister & Granular Diagnostics Showcase
   ========================================================================== */
.twister-card {
  background: var(--pop-card);
  border: var(--border-bold) solid var(--pop-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 32px;
  margin-bottom: 40px;
}

.twister-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.twister-pills {
  display: flex;
  gap: 8px;
}

.char-grid {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 30px 0;
}

.char-card {
  background: #FFFFFF;
  border: 2.5px solid var(--pop-black);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  min-width: 84px;
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.char-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.char-pinyin {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--pop-muted);
}

.char-main {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1.1;
  margin: 4px 0;
}

.char-score {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 2px 8px;
  border: 1.5px solid var(--pop-black);
  border-radius: var(--radius-pill);
}

.char-card.score-high .char-score {
  background: var(--pop-green);
  color: var(--pop-black);
}

.char-card.score-mid .char-score {
  background: var(--pop-yellow);
  color: var(--pop-black);
}

.char-card.score-err .char-score {
  background: var(--pop-red);
  color: #fff;
}

/* Diagnostic Drawer Preview */
.diagnostic-drawer-preview {
  background: var(--pop-gray-bg);
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-md);
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.diag-col {
  background: #FFFFFF;
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-sm);
  padding: 12px;
  box-shadow: 2px 2px 0px var(--pop-black);
}

.diag-title {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--pop-muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.diag-content {
  font-weight: 800;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ==========================================================================
   Features Grid
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--pop-card);
  border: var(--border-bold) solid var(--pop-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 28px;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.feature-top {
  margin-bottom: 20px;
}

.feature-icon-box {
  width: 54px;
  height: 54px;
  border: 2.5px solid var(--pop-black);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 3px 3px 0px var(--pop-black);
  margin-bottom: 20px;
}

.feature-card:nth-child(1) .feature-icon-box { background: var(--pop-yellow); }
.feature-card:nth-child(2) .feature-icon-box { background: var(--pop-green); }
.feature-card:nth-child(3) .feature-icon-box { background: var(--pop-blue); }
.feature-card:nth-child(4) .feature-icon-box { background: var(--pop-pink); color: #fff; }
.feature-card:nth-child(5) .feature-icon-box { background: var(--pop-orange); }
.feature-card:nth-child(6) .feature-icon-box { background: var(--pop-purple); color: #fff; }

.feature-title {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.95rem;
  color: #444;
  line-height: 1.55;
}

/* ==========================================================================
   Privacy Guarantee Banner
   ========================================================================== */
.privacy-banner {
  background: var(--pop-black);
  color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-xl);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.privacy-banner h2 {
  color: var(--pop-yellow);
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.privacy-banner p {
  color: #E0E0E0;
  font-size: 1.05rem;
  margin-bottom: 20px;
}

.privacy-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.privacy-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.95rem;
}

.privacy-list-icon {
  width: 22px;
  height: 22px;
  background: var(--pop-green);
  color: var(--pop-black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 900;
}

.privacy-stamp-box {
  background: #262626;
  border: 2.5px dashed var(--pop-yellow);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.privacy-stamp-big {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  color: var(--pop-green);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.privacy-stamp-sub {
  font-size: 0.85rem;
  color: #A0A0A0;
}

/* ==========================================================================
   CTA & Footer Section
   ========================================================================== */
.cta-section {
  text-align: center;
  padding: 90px 0;
  background: var(--pop-yellow);
  border-top: var(--border-bold) solid var(--pop-black);
  border-bottom: var(--border-bold) solid var(--pop-black);
}

.cta-box {
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 1.15rem;
  margin-bottom: 32px;
  font-weight: 600;
}

/* Footer */
.footer {
  background: var(--pop-card);
  padding: 40px 0;
  border-top: 2px solid var(--pop-black);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
}

.footer-links {
  display: flex;
  gap: 20px;
  font-weight: 700;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--pop-pink);
  text-decoration: underline;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--pop-muted);
  width: 100%;
  margin-top: 16px;
  text-align: center;
}

/* ==========================================================================
   Legal Pages (privacy.html & terms.html)
   ========================================================================== */
.legal-page-header {
  padding: 40px 0 20px;
  text-align: center;
}

.legal-article {
  max-width: 820px;
  margin: 0 auto 60px;
  background: var(--pop-card);
  border: var(--border-bold) solid var(--pop-black);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 48px;
}

.legal-article h1 {
  font-size: 2.4rem;
  margin-bottom: 8px;
}

.legal-meta {
  color: var(--pop-muted);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 32px;
  border-bottom: 2px solid var(--pop-black);
  padding-bottom: 16px;
}

.legal-article h2 {
  font-size: 1.5rem;
  margin: 32px 0 12px;
}

.legal-article p {
  margin-bottom: 16px;
  line-height: 1.7;
}

.legal-article ul {
  margin: 12px 0 20px 24px;
}

.legal-article li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.legal-highlight-box {
  background: var(--pop-gray-bg);
  border: 2px solid var(--pop-black);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  margin: 24px 0;
  box-shadow: 3px 3px 0px var(--pop-black);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-badge-row {
    justify-content: center;
  }

  .hero-description {
    margin: 0 auto 32px;
  }

  .hero-actions {
    justify-content: center;
  }

  .simulator-body {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .privacy-banner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .privacy-list li {
    justify-content: center;
  }

  .nav-center {
    display: none;
  }
}

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

  .features-grid {
    grid-template-columns: 1fr;
  }

  .diagnostic-drawer-preview {
    grid-template-columns: 1fr;
  }

  .legal-article {
    padding: 24px 18px;
  }
}