/* ==========================================================================
   One Hand Control - Official Google Antigravity Light-Mode Design System
   Clean, modern, high-contrast, expansive layout with fluid animations
   ========================================================================== */

:root {
  /* Surface & Canvas Palette (Pure Light Mode) */
  --bg-base: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-hover: #e2e8f0;
  --bg-glass: rgba(255, 255, 255, 0.92);

  /* Borders & Dividers */
  --border-subtle: #eaecf0;
  --border-medium: #d0d5dd;
  --border-focus: #0f172a;

  /* Typography (High Contrast Slate & Deep Charcoal) */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  /* Refined, Minimalist Accents (Zero Neon, Google Minimal Aesthetic) */
  --brand-black: #000000;
  --brand-charcoal: #0f172a;
  --accent-blue: #2563eb;
  --accent-purple: #7c3aed;
  --accent-emerald: #059669;
  --accent-gold: #b45309;

  /* Border Radii */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* Soft Realistic Shadows (No harsh glow) */
  --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.06), 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 4px 16px -2px rgba(16, 24, 40, 0.06), 0 2px 6px -2px rgba(16, 24, 40, 0.04);
  --shadow-lg: 0 20px 48px -12px rgba(16, 24, 40, 0.12), 0 4px 12px -2px rgba(16, 24, 40, 0.04);
  --shadow-phone: 0 25px 60px -15px rgba(15, 23, 42, 0.14), 0 0 1px rgba(15, 23, 42, 0.15);
  --shadow-phone-hover: 0 35px 80px -15px rgba(15, 23, 42, 0.22), 0 0 1px rgba(15, 23, 42, 0.2);

  /* Layout Widths (Antigravity Expansive Viewport) */
  --max-w: 1680px;
  --ease-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 0.18s var(--ease-smooth);
  --transition-normal: 0.32s var(--ease-smooth);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Google Sans Flex", "Google Sans", Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-base);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-base);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 650;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

h1 {
  font-size: clamp(2.8rem, 6.2vw, 4.8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(2rem, 3.8vw, 3rem);
  margin-bottom: 0.85rem;
}

h3 {
  font-size: 1.45rem;
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-secondary);
  font-size: 1.08rem;
  line-height: 1.65;
}

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

a:hover {
  color: var(--accent-blue);
}

code, kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-surface-elevated);
  color: #0f172a;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-subtle);
}

kbd {
  color: var(--text-primary);
  background: #f1f5f9;
  border-bottom-width: 2px;
}

/* Wide Antigravity Container */
.container {
  width: min(94vw, 1680px);
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(20px, 3.5vw, 56px);
  padding-right: clamp(20px, 3.5vw, 56px);
}

/* Navigation Bar - Antigravity Style */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding-left: clamp(14px, 3.5vw, 28px);
  padding-right: clamp(14px, 3.5vw, 28px);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-weight: 650;
  font-size: 1.22rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
  flex-shrink: 0;
  text-decoration: none;
}

.nav-brand span {
  white-space: nowrap;
}

.nav-brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

.nav-mobile-cta {
  display: none;
}

/* Buttons - Antigravity Solid Pill Architecture */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-full);
  font-weight: 550;
  font-size: 0.96rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand-black);
  color: #ffffff;
  border: 1px solid var(--brand-black);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.btn-primary:hover {
  background: #262626;
  border-color: #262626;
  transform: translateY(-1.5px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--text-primary);
  border: 1px solid rgba(15, 23, 42, 0.12);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(15, 23, 42, 0.22);
  transform: translateY(-1.5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  color: var(--text-primary);
}

/* Google Play Pill Button */
.btn-play {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--brand-black);
  color: #ffffff;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--brand-black);
  transition: all var(--transition-normal);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
  text-decoration: none;
}

.btn-play:hover {
  background: #262626;
  border-color: #262626;
  transform: translateY(-1.5px);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.2);
  color: #ffffff;
}

.btn-play-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-play-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  text-align: left;
}

.btn-play-sub {
  font-size: 0.7rem;
  color: #a3a3a3;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

.btn-play-main {
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  color: #ffffff;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.28rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-pro {
  background: #0f172a;
  color: #ffffff;
  border: 1px solid #0f172a;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
}

.badge-free {
  background: #f1f5f9;
  color: #334155;
  border: 1px solid #e2e8f0;
}

.badge-privacy {
  background: #f8fafc;
  color: #475569;
  border: 1px solid #e2e8f0;
}

/* ==========================================================================
   Hero Section - Google Antigravity Light-Mode Radial Burst Composition
   ========================================================================== */

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 4.5rem 0 3.5rem;
  text-align: center;
  overflow: hidden;
  background-color: var(--bg-base);
}

/* Antigravity Dynamic Particle Silhouette Background */
.hero-burst-wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  max-width: 1600px;
  height: 100%;
  max-height: 960px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.95;
}

.hero-silhouette-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

/* Hero Animated Brand Icon Pop */
.hero-brand-badge-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  margin: 2.75rem 0 2rem;
}

.hero-brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 6px 18px 6px 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  font-size: 0.92rem;
  font-weight: 550;
  color: var(--text-primary);
  opacity: 0;
  transform: scale(0.6) translateY(12px);
  animation: iconPopIn 0.85s var(--ease-spring) 0.65s forwards;
}

.hero-brand-badge img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: block;
}

/* Hero Big Text Animated Entrance */
.hero-title {
  max-width: 1240px;
  margin: 0 auto 1.6rem;
  color: #000000;
  font-size: clamp(3.0rem, 5.8vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.14;
  min-height: 2.3em;
}

.typewriter-cursor {
  display: inline-block;
  font-weight: 300;
  color: var(--brand-black);
  margin-left: 2px;
  animation: blinkCursor 0.85s infinite;
}

.hero.typing-complete .typewriter-cursor {
  display: none !important;
  opacity: 0 !important;
  visibility: hidden !important;
  animation: none !important;
}

@keyframes blinkCursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-reveal-wrap {
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.8s var(--ease-smooth), transform 0.8s var(--ease-spring);
}

.hero.typing-complete .hero-reveal-wrap {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.hero-subtitle {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.65;
  opacity: 0;
  transform: translateY(20px);
  animation: heroTextIn 0.75s var(--ease-smooth) 0.15s forwards;
}

/* Hero Buttons Animated Entrance */
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 2.75rem;
  opacity: 0;
  transform: translateY(20px);
  animation: heroButtonsIn 0.8s var(--ease-smooth) 0.35s forwards;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  opacity: 0;
  transform: translateY(16px);
  animation: heroButtonsIn 0.8s var(--ease-smooth) 0.5s forwards;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--brand-black);
}

.hero-meta-item strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Keyframe Animations for Hero Sequence */
@keyframes heroTextIn {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes iconPopIn {
  0% {
    opacity: 0;
    transform: scale(0.6) translateY(16px);
  }
  70% {
    opacity: 1;
    transform: scale(1.05) translateY(-2px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes heroButtonsIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Interactive Action Strap (Antigravity Undulating Wave Ribbon)
   ========================================================================== */

.action-strap-wrap {
  margin-top: 1.5rem;
  position: relative;
  width: 100%;
}

.action-strap-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 2.25rem;
}

.action-strap-title {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.action-strap-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.action-strap-viewport {
  position: relative;
  width: 100%;
  height: 160px;
  overflow-x: auto;
  overflow-y: hidden;
  display: flex;
  align-items: center;
  mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
  scrollbar-width: none;
  cursor: grab;
  user-select: none;
  padding: 10px 0;
}

.action-strap-viewport::-webkit-scrollbar {
  display: none;
}

.action-strap-viewport:active {
  cursor: grabbing;
}

.action-strap-track {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 48px;
  height: 100%;
  will-change: transform;
}

.action-chip {
  width: 58px;
  height: 58px;
  min-width: 58px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05), 0 1px 2px rgba(15, 23, 42, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: transform 0.16s var(--ease-smooth), box-shadow 0.16s ease, border-color 0.16s ease, color 0.16s ease;
  position: relative;
  cursor: pointer;
  will-change: transform;
}

.action-chip:hover,
.action-chip.active-hover {
  border-color: #0f172a;
  color: #000000;
  background: #ffffff;
  box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.18);
  z-index: 20;
}

.action-chip svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  pointer-events: none;
  transition: transform 0.18s ease;
}

.action-chip:hover svg,
.action-chip.active-hover svg {
  transform: scale(1.15);
}

.action-tooltip {
  position: absolute;
  pointer-events: none;
  background: #0f172a;
  color: #ffffff;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translate(-50%, -120%) scale(0.92);
  transition: opacity 0.14s ease, transform 0.14s ease;
  z-index: 100;
}

.action-tooltip.visible {
  opacity: 1;
  transform: translate(-50%, -150%) scale(1);
}

.action-tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: #0f172a transparent transparent transparent;
}

/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-smooth), transform 0.7s var(--ease-smooth);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

/* ==========================================================================
   Features Grid - Clean Architectural Light Cards (Zero Neon)
   ========================================================================== */

.features-section {
  padding: 7rem 0 6rem;
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 4rem;
}

.section-tag {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.25rem;
}

@media (max-width: 1150px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
}

/* Minimalist Monochrome/Slate Icon Container */
.feature-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  transition: all var(--transition-fast);
}

.feature-card:hover .feature-icon-wrap {
  background: var(--brand-black);
  border-color: var(--brand-black);
  color: #ffffff;
}

.feature-icon-wrap svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-title {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.feature-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.feature-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.25rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.feature-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.feature-bullets li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-black);
  margin-top: 8px;
  flex-shrink: 0;
}

/* ==========================================================================
   Spotlight Sections (Wide, Airy, Light Backgrounds)
   ========================================================================== */

.highlight-section {
  padding: 6.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-base);
}

.highlight-section:nth-of-type(even) {
  background-color: var(--bg-subtle);
}

.highlight-row {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 5rem;
}

.highlight-row.reverse {
  grid-template-columns: 0.85fr 1.15fr;
}

.highlight-content h3 {
  font-size: 2.2rem;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
}

.highlight-content p {
  margin-bottom: 1.4rem;
  font-size: 1.1rem;
}

.highlight-badge-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.highlight-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.highlight-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.highlight-phone-wrap {
  max-width: 330px;
  width: 100%;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow-phone);
  border: 1px solid rgba(15, 23, 42, 0.08);
  transition: transform 0.4s var(--ease-smooth), box-shadow 0.4s var(--ease-smooth);
  background: #ffffff;
}

.highlight-phone-wrap:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-phone-hover);
}

.highlight-phone-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Comparison Table (Clean Light Architecture)
   ========================================================================== */

.comparison-section {
  padding: 7rem 0;
  background-color: var(--bg-base);
}

.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 680px;
}

.comparison-table th,
.comparison-table td {
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
  background: var(--bg-subtle);
  font-weight: 650;
  font-size: 1rem;
  color: var(--text-primary);
}

.comparison-table th:first-child {
  width: 44%;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background: #f8fafc;
}

.check-yes { color: #0f172a; font-weight: 600; }

.check-pro { color: #0f172a; font-weight: 700; display: inline-flex; align-items: center; gap: 6px; }

.check-no { color: #94a3b8; font-weight: 400; }

/* ==========================================================================
   FAQ Accordion Section (Crisp Light Mode)
   ========================================================================== */

.faq-section {
  padding: 7rem 0;
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
}

.faq-list {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.faq-item:hover {
  border-color: var(--border-medium);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.12rem;
  font-weight: 600;
  padding: 1.45rem 1.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.faq-chevron {
  transition: transform var(--transition-normal);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
}

.faq-chevron svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--brand-black);
}

.faq-answer {
  display: none;
  padding: 0 1.75rem 1.5rem;
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.65;
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.25rem;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ==========================================================================
   Call to Action Banner
   ========================================================================== */

.cta-section {
  padding: 6.5rem 0;
  background-color: var(--bg-base);
}

.cta-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 4.5rem 3rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 160px;
  height: 3px;
  background: var(--brand-black);
  border-radius: 9999px;
}

.cta-card h2 {
  margin-bottom: 1.15rem;
}

.cta-card p {
  max-width: 640px;
  margin: 0 auto 2.5rem;
  font-size: 1.18rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
  padding: 5rem 0 2.5rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-brand-title {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-weight: 650;
  font-size: 1.25rem;
}

.footer-brand-title img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.footer-brand p {
  font-size: 0.95rem;
  max-width: 340px;
  line-height: 1.65;
}

.footer-col h4 {
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.4rem;
  color: var(--text-primary);
  font-weight: 650;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.95rem;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Guide Page Layout (Light Mode Documentation Hub)
   ========================================================================== */

.guide-container {
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 3.5rem;
  padding: 4rem 0 7rem;
  position: relative;
}

.guide-sidebar {
  position: sticky;
  top: 96px;
  height: calc(100vh - 120px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-right: 1.5rem;
  scrollbar-width: thin;
}

.guide-search-box {
  position: relative;
}

.guide-search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.6rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.94rem;
  outline: none;
  transition: all var(--transition-fast);
}

.guide-search-input:focus {
  border-color: var(--brand-black);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

.guide-search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.guide-search-icon svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.guide-nav-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.guide-nav-title {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 700;
  margin-top: 1rem;
  margin-bottom: 0.4rem;
}

.guide-nav-link {
  color: var(--text-secondary);
  font-size: 0.92rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  display: block;
}

.guide-nav-link:hover,
.guide-nav-link.active {
  background: var(--bg-surface-elevated);
  color: var(--brand-black);
  font-weight: 550;
}

.guide-content {
  min-width: 0;
}

.guide-section {
  padding-bottom: 4rem;
  margin-bottom: 3.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.guide-section:last-child {
  border-bottom: none;
}

.guide-section h2 {
  font-size: 1.85rem;
  margin-bottom: 1rem;
  padding-top: 1rem;
}

.guide-direct-answer {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--brand-black);
  border-radius: var(--radius-xs);
  padding: 1.25rem 1.5rem;
  margin: 1.4rem 0 1.75rem;
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--text-primary);
}

.guide-steps {
  list-style: none;
  counter-reset: step-counter;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin: 1.5rem 0;
}

.guide-steps li {
  counter-increment: step-counter;
  position: relative;
  padding-left: 3rem;
  font-size: 1.02rem;
  color: var(--text-secondary);
}

.guide-steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.85rem 0;
  font-size: 0.96rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.guide-table th,
.guide-table td {
  padding: 1.15rem 1.4rem;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}

.guide-table th {
  background: var(--bg-subtle);
  color: var(--text-primary);
  font-weight: 650;
}

.guide-table tr:hover td {
  background: #f8fafc;
}

.alert-box {
  padding: 1.25rem 1.45rem;
  border-radius: var(--radius-sm);
  margin: 1.5rem 0;
  font-size: 0.98rem;
  line-height: 1.65;
}

.alert-tip {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.alert-warning {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
}

.guide-mockup-wrap {
  max-width: 280px;
  margin: 2rem 0 0.8rem;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(15, 23, 42, 0.1);
  box-shadow: var(--shadow-phone);
  background: #ffffff;
  transition: transform 0.35s var(--ease-smooth), box-shadow 0.35s var(--ease-smooth);
}

.guide-mockup-wrap:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-phone-hover);
}

.guide-mockup-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

.guide-mockup-caption {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.6rem;
  margin-bottom: 1.75rem;
  font-style: italic;
}

/* ==========================================================================
   Privacy Page (Clean Light Card)
   ========================================================================== */

.privacy-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 4rem 3.5rem;
  max-width: 920px;
  margin: 4rem auto 7rem;
  box-shadow: var(--shadow-sm);
}

.privacy-card h1 {
  margin-bottom: 0.75rem;
}

.privacy-meta {
  color: var(--text-muted);
  font-size: 0.94rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.privacy-card h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 0.95rem;
}

.privacy-card p,
.privacy-card ul {
  margin-bottom: 1.4rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.privacy-card ul {
  padding-left: 1.6rem;
}

.privacy-card li {
  margin-bottom: 0.6rem;
}

/* ==========================================================================
   Responsive Architecture (Half-Window & Phones)
   ========================================================================== */

/* 1. Intermediate Desktop & Narrow Laptops (1081px - 1280px) */
@media (min-width: 1081px) and (max-width: 1280px) {
  .nav-links {
    gap: 1.25rem;
  }
  .nav-links a {
    font-size: 0.88rem;
  }
  .nav-brand {
    font-size: 1.12rem;
  }
}

/* 2. Half-Window Desktop Snapping & Tablets (<= 1080px) */
@media (max-width: 1080px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--bg-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 1.75rem clamp(20px, 4vw, 48px);
    gap: 1.25rem;
    box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.14);
    z-index: 1000;
  }

  .nav-links.show {
    display: flex;
    animation: menuSlideDown 0.24s var(--ease-smooth);
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-mobile-cta {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
    padding-top: 1.1rem;
    border-top: 1px solid var(--border-subtle);
  }

  .nav-mobile-cta .btn {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1.4rem;
    font-size: 0.95rem;
  }

  .highlight-row,
  .highlight-row.reverse {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .highlight-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

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

  .highlight-visual {
    width: 100%;
    display: flex;
    justify-content: center;
  }

  .guide-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .guide-sidebar {
    position: static;
    height: auto;
    max-height: 300px;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 1.5rem;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.75rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@keyframes menuSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 3. Small Tablets & Phones (<= 768px) */
@media (max-width: 768px) {
  .nav-container {
    height: 64px;
    padding-left: clamp(14px, 3.5vw, 24px);
    padding-right: clamp(14px, 3.5vw, 24px);
  }

  .nav-brand {
    font-size: clamp(0.98rem, 4.4vw, 1.08rem);
    gap: 9px;
  }

  .nav-brand img {
    width: 30px;
    height: 30px;
  }

  .nav-links {
    top: 64px;
    padding: 1.5rem 1.5rem 2rem;
    gap: 1.1rem;
  }

  .nav-links a {
    font-size: 1.02rem;
    padding: 4px 0;
  }

  .nav-actions {
    gap: 0.6rem;
  }

  .nav-actions .btn-primary {
    padding: 0.48rem 1.05rem;
    font-size: 0.86rem;
  }

  .hero {
    min-height: auto;
    padding: 3.5rem 0 2.5rem;
  }

  .hero-burst-wrapper {
    width: 100%;
    max-width: 100vw;
    height: 100%;
  }

  .hero-title {
    font-size: clamp(2.5rem, 8.8vw, 3.4rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.04em;
    min-height: 3.2em;
    margin-bottom: 1.25rem;
  }

  .hero-subtitle {
    font-size: 1.02rem;
    line-height: 1.55;
    margin-bottom: 2rem;
    padding: 0 4px;
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-meta {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.86rem;
  }

  .hero-meta-item {
    justify-content: center;
    width: 100%;
    text-align: center;
  }

  .hero-brand-badge-wrap {
    margin: 1.85rem 0 1.5rem;
  }

  .hero-brand-badge {
    font-size: 0.84rem;
    padding: 5px 14px 5px 6px;
    max-width: 95vw;
  }

  .action-strap-wrap {
    margin-top: 1rem;
  }

  .action-strap-header {
    margin-bottom: 1.75rem;
  }

  .action-strap-title {
    font-size: clamp(1.3rem, 4.6vw, 1.65rem);
  }

  .action-strap-desc {
    font-size: 0.95rem;
    padding: 0 8px;
  }

  .action-strap-viewport {
    height: 120px;
    padding: 6px 0;
    -webkit-overflow-scrolling: touch;
  }

  .action-chip {
    width: 48px;
    height: 48px;
    min-width: 48px;
  }

  .action-chip svg {
    width: 19px;
    height: 19px;
  }

  .action-strap-track {
    gap: 12px;
    padding: 0 20px;
  }

  .features-section {
    padding: 5rem 0 4rem;
  }

  .section-header {
    margin-bottom: 2.75rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .feature-card {
    padding: 2rem 1.5rem;
  }

  .highlight-section {
    padding: 4.5rem 0;
  }

  .highlight-content h3 {
    font-size: 1.55rem;
  }

  .highlight-phone-wrap {
    max-width: 280px;
  }

  .comparison-section {
    padding: 5rem 0;
  }

  .table-wrapper {
    -webkit-overflow-scrolling: touch;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 1rem 1.2rem;
    font-size: 0.92rem;
  }

  .faq-section {
    padding: 5rem 0;
  }

  .faq-question {
    padding: 1.2rem 1.35rem;
    font-size: 1.02rem;
  }

  .faq-answer {
    padding: 0 1.35rem 1.25rem;
    font-size: 0.96rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }

  .privacy-card {
    padding: 2.25rem 1.35rem;
    margin: 2rem auto 4rem;
    border-radius: var(--radius-lg);
  }
}

/* 4. Mobile Phones (<= 580px) */
@media (max-width: 580px) {
  .nav-container {
    padding-left: clamp(12px, 3.5vw, 18px);
    padding-right: clamp(12px, 3.5vw, 18px);
  }

  .nav-brand {
    font-size: clamp(0.92rem, 4.2vw, 1.02rem);
    gap: 8px;
  }

  .nav-brand img {
    width: 28px;
    height: 28px;
    border-radius: 7px;
  }

  .nav-actions .btn-primary {
    display: none !important;
  }

  .nav-actions {
    gap: 0;
  }

  .nav-toggle {
    padding: 6px;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 2.25rem;
    gap: 0.85rem;
  }

  .hero-cta .btn-play,
  .hero-cta .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .hero-title {
    font-size: clamp(2.35rem, 9.6vw, 3.0rem);
    font-weight: 800;
    line-height: 1.12;
    min-height: 3.4em;
  }

  .action-chip {
    width: 44px;
    height: 44px;
    min-width: 44px;
  }

  .action-chip svg {
    width: 18px;
    height: 18px;
  }

  .action-strap-track {
    gap: 10px;
    padding: 0 14px;
  }

  .highlight-phone-wrap {
    max-width: 250px;
  }
}