/* ==========================================================================
   Danhai LRT App - Promotional Marketing Website Stylesheet
   Modern Glassmorphism, Parallax & Responsive Transit Theme
   ========================================================================== */

:root {
  /* Color Palette - Danhai Oceanic & Transit System */
  --green-line: #10b981;
  --green-line-light: #d1fae5;
  --green-line-glow: rgba(16, 185, 129, 0.4);

  --blue-line: #0ea5e9;
  --blue-line-light: #e0f2fe;
  --blue-line-glow: rgba(14, 165, 233, 0.4);

  --sunset-coral: #f97316;
  --sunset-amber: #f59e0b;
  --sunset-rose: #fb7185;

  /* Typography */
  --font-sans:
    'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Noto Sans TC', 'PingFang TC', 'Noto Sans JP', 'Noto Sans KR', sans-serif;
  --font-display:
    'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans TC',
    sans-serif;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================
   Dark Theme (Default / Premium Midnight Sea)
   ========================================== */
[data-theme='dark'] {
  --bg-primary: #070d18;
  --bg-secondary: #0d1627;
  --bg-tertiary: #132038;
  --bg-surface: rgba(16, 27, 48, 0.7);
  --bg-surface-elevated: rgba(22, 36, 64, 0.85);
  --bg-glass: rgba(15, 25, 45, 0.65);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(56, 189, 248, 0.4);
  --border-highlight: rgba(255, 255, 255, 0.16);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #38bdf8;

  --card-shadow:
    0 16px 40px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.07);
  --card-shadow-hover:
    0 24px 50px -10px rgba(14, 165, 233, 0.25), 0 0 0 1px rgba(56, 189, 248, 0.35);

  --hero-glow-1: radial-gradient(
    circle at 20% 20%,
    rgba(14, 165, 233, 0.22) 0%,
    transparent 60%
  );
  --hero-glow-2: radial-gradient(
    circle at 80% 30%,
    rgba(16, 185, 129, 0.18) 0%,
    transparent 55%
  );
  --hero-glow-3: radial-gradient(
    circle at 50% 80%,
    rgba(245, 158, 11, 0.12) 0%,
    transparent 50%
  );

  --pill-bg: rgba(255, 255, 255, 0.07);
  --pill-border: rgba(255, 255, 255, 0.12);

  --nav-bg: rgba(7, 13, 24, 0.82);
  --nav-border: rgba(255, 255, 255, 0.08);

  --phone-frame-bg: #030712;
  --phone-border: rgba(255, 255, 255, 0.2);
}

/* ==========================================
   Light Theme (Breezy Coastal Azure & White)
   ========================================== */
[data-theme='light'] {
  --bg-primary: #f8fafc;
  --bg-secondary: #edf3f9;
  --bg-tertiary: #e2ebf5;
  --bg-surface: rgba(255, 255, 255, 0.85);
  --bg-surface-elevated: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.75);

  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-focus: rgba(14, 165, 233, 0.6);
  --border-highlight: rgba(15, 23, 42, 0.14);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-accent: #0284c7;

  --card-shadow:
    0 12px 30px -8px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.05);
  --card-shadow-hover:
    0 20px 40px -10px rgba(14, 165, 233, 0.2), 0 0 0 1px rgba(14, 165, 233, 0.3);

  --hero-glow-1: radial-gradient(
    circle at 20% 20%,
    rgba(14, 165, 233, 0.15) 0%,
    transparent 60%
  );
  --hero-glow-2: radial-gradient(
    circle at 80% 30%,
    rgba(16, 185, 129, 0.12) 0%,
    transparent 55%
  );
  --hero-glow-3: radial-gradient(
    circle at 50% 80%,
    rgba(249, 115, 22, 0.08) 0%,
    transparent 50%
  );

  --pill-bg: rgba(15, 23, 42, 0.05);
  --pill-border: rgba(15, 23, 42, 0.1);

  --nav-bg: rgba(248, 250, 252, 0.88);
  --nav-border: rgba(15, 23, 42, 0.07);

  --phone-frame-bg: #0f172a;
  --phone-border: rgba(15, 23, 42, 0.15);
}

/* ==========================================
   CSS Reset & Base
   ========================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  width: 100%;
  transition:
    background-color var(--transition-normal),
    color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-break: keep-all;
  overflow-wrap: break-word;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  word-break: keep-all;
  overflow-wrap: break-word;
  text-wrap: balance;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* ==========================================
   Header & Navigation
   ========================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--nav-border);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon-wrapper {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0b1320;
}

.brand-icon-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, #38bdf8, #2dd4bf);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme='light'] .brand-title {
  background: linear-gradient(135deg, #0284c7, #0d9488);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--green-line), var(--blue-line));
  transition: width var(--transition-fast);
  border-radius: 2px;
}

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

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

/* Control Buttons (Lang, Theme, Mobile toggle) */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

.lang-select-wrapper {
  position: relative;
}

.lang-select {
  appearance: none;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 32px 8px 14px;
  border-radius: 10px;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.lang-select:hover,
.lang-select:focus {
  background: var(--bg-surface-elevated);
  border-color: var(--border-focus);
}

.lang-select-icon {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 10px;
  background: linear-gradient(135deg, #0ea5e9 0%, #10b981 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
  transition: all var(--transition-fast);
}

.btn-header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
  filter: brightness(1.05);
}

.mobile-menu-btn {
  display: none;
}

/* ==========================================
   Hero Section with Parallax Stage
   ========================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  padding: 130px 0 80px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-glow-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: var(--hero-glow-1), var(--hero-glow-2), var(--hero-glow-3);
  opacity: 0.85;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-size: 50px 50px;
  background-image:
    linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
  mask-image: radial-gradient(ellipse at 50% 50%, rgba(0, 0, 0, 1) 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(
    ellipse at 50% 50%,
    rgba(0, 0, 0, 1) 20%,
    transparent 75%
  );
  pointer-events: none;
  z-index: 1;
}

/* Animated Transit Track Parallax Line */
.hero-track-line {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  pointer-events: none;
  z-index: 2;
  opacity: 0.4;
}

.hero-track-line svg {
  width: 100%;
  height: 100%;
}

.hero-content-wrapper {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  align-items: center;
  gap: 48px;
}

.hero-badge-announcement {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--bg-surface);
  border: 1px solid var(--border-highlight);
  backdrop-filter: blur(12px);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-accent);
  margin-bottom: 24px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green-line);
  box-shadow: 0 0 10px var(--green-line);
  animation: pulseDot 2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.5);
    opacity: 0.5;
  }
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 20px;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 50%, #2dd4bf 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme='light'] .text-gradient-cyan {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 50%, #0d9488 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 580px;
}

/* Feature Pills in Hero */
.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.feature-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  color: var(--text-secondary);
}

.feature-pill.green {
  border-color: rgba(16, 185, 129, 0.35);
  color: #10b981;
}

.feature-pill.blue {
  border-color: rgba(14, 165, 233, 0.35);
  color: #38bdf8;
}

/* CTA Download Row */
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.btn-store-download {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 12px 24px;
  border-radius: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn-google-play {
  background: linear-gradient(135deg, #047857 0%, #10b981 100%);
  color: #ffffff;
  box-shadow: 0 8px 24px -4px rgba(16, 185, 129, 0.4);
}

.btn-google-play:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px -4px rgba(16, 185, 129, 0.55);
  filter: brightness(1.06);
}

.btn-apple-store {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-highlight);
  color: var(--text-primary);
  box-shadow: var(--card-shadow);
  cursor: pointer;
}

.btn-apple-store:hover {
  border-color: var(--border-focus);
  transform: translateY(-2px);
}

.btn-store-icon {
  font-size: 1.6rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-store-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.btn-store-text .label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  opacity: 0.85;
}

.btn-store-text .title {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.2;
}

.badge-tag-status {
  position: absolute;
  top: -8px;
  right: -8px;
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 999px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  letter-spacing: 0.02em;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================
   Hero Visual Stage (Floating Mockup & Parallax Cards)
   ========================================== */
.hero-visual-stage {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup-container {
  position: relative;
  width: 320px;
  height: 640px;
  border-radius: 44px;
  background: var(--phone-frame-bg);
  padding: 10px;
  box-shadow:
    0 25px 60px -15px rgba(0, 0, 0, 0.7),
    0 0 0 1px var(--phone-border),
    0 0 60px rgba(14, 165, 233, 0.2);
  transition: transform var(--transition-smooth);
  animation: heroFloat 6s ease-in-out infinite;
}

@keyframes heroFloat {
  0%,
  100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-12px) rotate(0.5deg);
  }
}

.phone-inner-screen {
  width: 100%;
  height: 100%;
  border-radius: 36px;
  overflow: hidden;
  position: relative;
  background: #000;
}

.phone-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    opacity 0.4s ease,
    transform 0.4s ease;
}

/* Floating Status Cards around Phone */
.floating-card {
  position: absolute;
  padding: 12px 18px;
  border-radius: 16px;
  background: var(--bg-surface-elevated);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-highlight);
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 20;
  transition: transform var(--transition-fast);
  white-space: nowrap;
}

.floating-card:hover {
  transform: scale(1.05);
}

.floating-card-1 {
  top: 12%;
  left: -18%;
  animation: floatSubtle1 5s ease-in-out infinite;
}

.floating-card-2 {
  bottom: 22%;
  right: -15%;
  animation: floatSubtle2 6s ease-in-out infinite;
}

.floating-card-3 {
  bottom: 4%;
  left: -12%;
  animation: floatSubtle3 7s ease-in-out infinite;
}

@keyframes floatSubtle1 {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes floatSubtle2 {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(8px);
  }
}

@keyframes floatSubtle3 {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

.f-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.f-card-icon.green {
  background: rgba(16, 185, 129, 0.18);
  color: var(--green-line);
}

.f-card-icon.blue {
  background: rgba(14, 165, 233, 0.18);
  color: var(--blue-line);
}

.f-card-icon.amber {
  background: rgba(245, 158, 11, 0.18);
  color: var(--sunset-amber);
}

.f-card-text {
  display: flex;
  flex-direction: column;
}

.f-card-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
}

.f-card-val {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
}

/* ==========================================
   Section Universal Styles
   ========================================== */
.section-block {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  color: var(--text-accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================
   Target Audience Section (4 Pillars)
   ========================================== */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.audience-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 32px 24px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.audience-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-focus);
  box-shadow: var(--card-shadow-hover);
  background: var(--bg-surface-elevated);
}

.audience-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green-line), var(--blue-line));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.audience-card:hover::before {
  opacity: 1;
}

.audience-icon-box {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 20px;
}

.audience-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.audience-card-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.audience-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.audience-bullet {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.audience-bullet::before {
  content: '✓';
  color: var(--green-line);
  font-weight: 800;
}

/* ==========================================
   Interactive Simulator Section (Live Tabs)
   ========================================== */
.simulator-stage-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
}

.simulator-tabs-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-tab-btn {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 22px 24px;
  border-radius: 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  text-align: left;
  transition: all var(--transition-normal);
  cursor: pointer;
  position: relative;
}

.feature-tab-btn:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-highlight);
}

.feature-tab-btn.active {
  background: var(--bg-surface-elevated);
  border-color: var(--border-focus);
  box-shadow: var(--card-shadow-hover);
}

.feature-tab-btn.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  bottom: 15%;
  width: 4px;
  border-radius: 0 4px 4px 0;
  background: linear-gradient(180deg, var(--blue-line), var(--green-line));
}

.f-tab-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.feature-tab-btn.active .f-tab-icon {
  background: rgba(14, 165, 233, 0.2);
  border-color: var(--blue-line);
}

.f-tab-content h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.f-tab-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 8px;
}

.f-tab-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.f-tab-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--pill-bg);
  color: var(--text-muted);
}

/* Simulator Phone Display */
.simulator-phone-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}

.simulator-phone-frame {
  width: 330px;
  height: 660px;
  border-radius: 46px;
  background: var(--phone-frame-bg);
  padding: 12px;
  box-shadow:
    0 25px 60px -15px rgba(0, 0, 0, 0.6),
    0 0 0 1px var(--phone-border),
    0 0 50px rgba(16, 185, 129, 0.15);
  position: relative;
}

.simulator-screen-viewport {
  width: 100%;
  height: 100%;
  border-radius: 36px;
  overflow: hidden;
  background: #000;
  position: relative;
}

.simulator-screen-viewport img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    opacity 0.4s ease,
    transform 0.4s ease;
}

/* ==========================================
   Hero Video Controls & Lightbox Modal
   ========================================== */
.hero-video-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 16px;
  position: relative;
  z-index: 25;
}

.hero-video-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-focus);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.hero-video-pill-btn:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.2), rgba(16, 185, 129, 0.2));
  color: var(--text-accent);
}

.video-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.video-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.video-modal-container {
  position: relative;
  width: 100%;
  max-width: 920px;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 20px;
  overflow: hidden;
  box-shadow:
    0 25px 60px rgba(0, 0, 0, 0.8),
    0 0 0 1px var(--border-highlight);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.video-modal-backdrop.active .video-modal-container {
  transform: scale(1);
}

.video-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 10;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.video-modal-close:hover {
  background: rgba(239, 68, 68, 0.85);
  transform: scale(1.1);
}

.video-modal-iframe-wrapper {
  width: 100%;
  height: 100%;
}

.video-modal-iframe-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ==========================================
   QR Code Lightbox Modal (Side-by-side)
   ========================================== */
.qr-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(7, 13, 24, 0.84);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.qr-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.qr-modal-container {
  position: relative;
  width: 100%;
  max-width: 680px;
  max-height: 92vh;
  overflow-y: auto;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-focus);
  border-radius: 24px;
  padding: 30px 28px 24px;
  box-shadow:
    0 25px 60px -10px rgba(0, 0, 0, 0.75),
    0 0 0 1px rgba(255, 255, 255, 0.08);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.qr-modal-backdrop.active .qr-modal-container {
  transform: scale(1);
}

.qr-modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.qr-modal-close:hover {
  background: rgba(239, 68, 68, 0.85);
  border-color: rgba(239, 68, 68, 0.85);
  color: #ffffff;
  transform: scale(1.1);
}

.qr-modal-header {
  text-align: center;
  margin-bottom: 24px;
  padding-right: 28px;
  padding-left: 28px;
}

.qr-modal-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 9999px;
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.28);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--blue-line);
  margin-bottom: 10px;
}

.qr-tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-line);
  box-shadow: 0 0 8px var(--blue-line);
}

.qr-modal-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.qr-modal-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Side-by-side platforms */
.qr-modal-platforms {
  display: flex;
  gap: 20px;
  align-items: stretch;
  justify-content: center;
  margin-bottom: 20px;
}

.qr-platform-card {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 18px;
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.qr-platform-card.android {
  border-color: rgba(16, 185, 129, 0.25);
  background: linear-gradient(
    180deg,
    rgba(16, 185, 129, 0.04) 0%,
    rgba(255, 255, 255, 0.02) 100%
  );
}

.qr-platform-card.android:hover {
  border-color: rgba(16, 185, 129, 0.5);
}

.qr-platform-card.ios {
  border-color: rgba(255, 255, 255, 0.12);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0.01) 100%
  );
}

.qr-platform-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.qr-platform-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.qr-platform-icon.android {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.qr-platform-icon.ios {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.apple-glyph {
  font-size: 1.3rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.qr-platform-info {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.qr-platform-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.qr-platform-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 9999px;
}

.qr-platform-badge.available {
  background: rgba(16, 185, 129, 0.18);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.35);
}

.qr-platform-badge.pending {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.qr-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.qr-display-box {
  width: 100%;
  max-width: 220px;
  aspect-ratio: 1;
  background: #ffffff;
  border-radius: 16px;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 10px 25px -4px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.15);
}

.qr-modal-img {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* iOS Placeholder box */
.qr-display-box.placeholder {
  background: rgba(255, 255, 255, 0.04);
  border: 2px dashed rgba(255, 255, 255, 0.18);
  box-shadow: none;
  padding: 16px;
}

[data-theme='light'] .qr-display-box.placeholder {
  background: rgba(15, 23, 42, 0.03);
  border-color: rgba(15, 23, 42, 0.18);
}

.qr-placeholder-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.qr-placeholder-apple {
  font-size: 2.2rem;
  color: var(--text-muted);
  line-height: 1;
  margin-bottom: 8px;
  opacity: 0.75;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.qr-placeholder-status {
  font-size: 0.85rem;
  font-weight: 700;
  color: #f59e0b;
  margin-bottom: 6px;
}

.qr-placeholder-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0;
}

.qr-scan-guide {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 10px;
  margin-bottom: 0;
  text-align: center;
}

.qr-scan-guide.muted {
  color: var(--text-muted);
  font-weight: 500;
}

.qr-store-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 11px 16px;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.qr-store-btn.btn-google {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
  border: none;
}

.qr-store-btn.btn-google:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
  background: linear-gradient(135deg, #34d399 0%, #059669 100%);
}

.qr-store-btn.btn-apple-pending {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  cursor: not-allowed;
  opacity: 0.85;
}

[data-theme='light'] .qr-store-btn.btn-apple-pending {
  background: rgba(15, 23, 42, 0.05);
}

.qr-modal-bottom-tip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* ==========================================
   Privacy Policy Modal
   ========================================== */
.privacy-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.privacy-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.privacy-modal-container {
  position: relative;
  width: 100%;
  max-width: 760px;
  max-height: 85vh;
  background: var(--bg-surface);
  border: 1px solid var(--border-focus);
  border-radius: 20px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.privacy-modal-backdrop.active .privacy-modal-container {
  transform: scale(1);
}

.privacy-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface-elevated);
}

.privacy-modal-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.privacy-modal-close {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.privacy-modal-close:hover {
  background: rgba(239, 68, 68, 0.85);
  color: #fff;
}

.privacy-modal-body {
  padding: 24px;
  overflow-y: auto;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.privacy-modal-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-surface-elevated);
}

.privacy-modal-body h4 {
  color: var(--text-primary);
  font-size: 1.05rem;
  margin: 20px 0 8px;
}

.privacy-modal-body p {
  margin-bottom: 14px;
}

.privacy-modal-body strong {
  color: var(--text-accent);
}

.privacy-modal-body a {
  color: var(--accent-cyan);
  text-decoration: underline;
}

/* ==========================================
   Privacy Policy Page Layout (Same Site Theme)
   ========================================== */
.privacy-page-main {
  padding-top: 120px;
  padding-bottom: 80px;
  position: relative;
  min-height: 80vh;
}

.privacy-page-header {
  text-align: center;
  margin-bottom: 40px;
}

.privacy-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 16px;
}

.privacy-highlights-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}

.privacy-highlight-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 18px;
  padding: 22px 20px;
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.privacy-highlight-box .ph-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.privacy-highlight-box h4 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.privacy-highlight-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.privacy-document-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-highlight);
  border-radius: 24px;
  padding: 48px;
  box-shadow: var(--card-shadow);
  line-height: 1.8;
}

.privacy-document-card h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 36px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.privacy-document-card h2:first-of-type {
  margin-top: 0;
}

.privacy-document-card p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.privacy-document-card ul {
  margin: 12px 0 20px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

.privacy-document-card a {
  color: var(--text-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 768px) {
  .privacy-highlights-row {
    grid-template-columns: 1fr;
  }
  .privacy-document-card {
    padding: 28px 20px;
  }
}

/* ==========================================
   Privacy & Architecture Highlight
   ========================================== */
.privacy-banner-card {
  background: linear-gradient(
    135deg,
    rgba(16, 27, 48, 0.8) 0%,
    rgba(13, 22, 39, 0.9) 100%
  );
  border: 1px solid var(--border-highlight);
  border-radius: 28px;
  padding: 48px;
  box-shadow: var(--card-shadow);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 40px;
}

[data-theme='light'] .privacy-banner-card {
  background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
}

.privacy-banner-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.privacy-banner-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.privacy-badges-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.privacy-badge-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  font-size: 0.88rem;
  font-weight: 700;
}

.privacy-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.btn-privacy-read {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-focus);
  color: var(--text-accent);
  font-weight: 700;
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}

.btn-privacy-read:hover {
  transform: translateY(-2px);
  background: var(--border-focus);
  color: #fff;
}

/* ==========================================
   FAQ Accordions
   ========================================== */
.faq-accordion-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--transition-fast);
}

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

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  background: none;
  border: none;
  cursor: pointer;
}

.faq-icon-toggle {
  font-size: 1.2rem;
  transition: transform var(--transition-fast);
  color: var(--text-muted);
}

.faq-item.active .faq-icon-toggle {
  transform: rotate(45deg);
  color: var(--text-accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.35s ease,
    padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* ==========================================
   Bottom CTA Section
   ========================================== */
.cta-banner-section {
  position: relative;
  scroll-margin-top: 90px;
  border-radius: 36px;
  padding: 80px 40px;
  margin: 60px 0 100px;
  overflow: hidden;
  background: linear-gradient(135deg, #071529 0%, #0f2a4a 50%, #064e3b 100%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #ffffff;
  text-align: center;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.6);
}

.cta-banner-content {
  position: relative;
  z-index: 10;
  max-width: 700px;
  margin: 0 auto;
}

.cta-banner-title {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
}

.cta-banner-subtitle {
  font-size: 1.15rem;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: 36px;
}

.cta-buttons-center {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 30px;
}

.qr-code-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 12px 22px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  text-align: left;
  margin-top: 10px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    background var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  user-select: none;
}

.qr-code-wrapper:hover,
.qr-code-wrapper:focus-visible {
  transform: translateY(-2px) scale(1.02);
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow:
    0 16px 35px -6px rgba(14, 165, 233, 0.3),
    0 0 0 1px rgba(56, 189, 248, 0.4);
  outline: none;
}

.qr-code-thumb-wrap {
  position: relative;
  width: 76px;
  height: 76px;
  flex-shrink: 0;
}

.qr-code-img {
  width: 76px;
  height: 76px;
  border-radius: 10px;
  background: #ffffff;
  padding: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  display: block;
}

.qr-zoom-hint {
  position: absolute;
  right: -4px;
  bottom: -4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--blue-line);
  color: #ffffff;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
  transition: transform var(--transition-fast);
}

.qr-code-wrapper:hover .qr-zoom-hint {
  transform: scale(1.15);
}

.qr-code-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.qr-code-label-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.qr-code-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

.qr-badge-click {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.25);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: #38bdf8;
  letter-spacing: 0.02em;
}

.qr-code-sub {
  font-size: 0.8rem;
  color: #94a3b8;
}

.btn-store-download.btn-apple-store[data-open-qr-modal] {
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast);
}

.btn-store-download.btn-apple-store[data-open-qr-modal]:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.12);
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 40px;
  font-size: 0.9rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 14px;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 18px;
}

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

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

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ==========================================
   Scroll Reveal Animations
   ========================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   Responsive Media Queries
   ========================================== */
@media (max-width: 1024px) {
  .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .simulator-stage-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .simulator-phone-wrapper {
    order: -1;
  }

  .privacy-banner-card {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  /* Header & Navigation */
  .site-header {
    height: 64px;
  }

  .header-inner {
    height: 64px;
  }

  .brand-icon-wrapper {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }

  .brand-title {
    font-size: 1.05rem;
  }

  .brand-sub {
    font-size: 0.65rem;
  }

  .header-actions {
    gap: 8px;
  }

  .lang-select {
    font-size: 0.78rem;
    padding: 6px 24px 6px 10px;
    border-radius: 8px;
  }

  .icon-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
  }

  .btn-header-cta {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  /* Mobile Navigation Drawer */
  .nav-menu {
    display: none;
  }

  .nav-menu.mobile-open {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    padding: 24px 20px;
    gap: 12px;
    z-index: 1000;
    overflow-y: auto;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .nav-menu.mobile-open li {
    width: 100%;
  }

  .nav-menu.mobile-open .nav-link {
    display: block;
    width: 100%;
    padding: 14px 20px;
    text-align: center;
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: 12px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
  }

  .nav-menu.mobile-open .nav-link:hover,
  .nav-menu.mobile-open .nav-link:active {
    background: var(--bg-surface-elevated);
    border-color: var(--border-focus);
    color: var(--text-accent);
  }

  .nav-menu.mobile-open .mobile-only-cta {
    display: block;
    margin-top: 12px;
  }

  .nav-menu.mobile-open .mobile-only-cta .btn-header-cta {
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    border-radius: 12px;
  }

  /* Hero Section */
  .hero-section {
    padding: 94px 0 40px;
    min-height: auto;
  }

  .hero-content-wrapper {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 36px;
  }

  .hero-badge-announcement {
    font-size: 0.78rem;
    padding: 5px 12px;
    margin-bottom: 16px;
    max-width: 100%;
    white-space: normal;
    line-height: 1.4;
  }

  .hero-title {
    font-size: clamp(1.75rem, 6.5vw, 2.4rem);
    line-height: 1.25;
    margin-bottom: 16px;
    word-break: keep-all;
    overflow-wrap: break-word;
    text-wrap: balance;
  }

  .hero-description {
    font-size: 0.98rem;
    line-height: 1.6;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 24px;
    word-break: keep-all;
  }

  .hero-pills {
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
  }

  .feature-pill {
    font-size: 0.78rem;
    padding: 5px 10px;
    word-break: keep-all;
    white-space: nowrap;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 20px;
    gap: 12px;
  }

  .btn-store-download {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
  }

  .hero-guarantee {
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px 16px;
    font-size: 0.8rem;
  }

  /* Phone Mockup & Floating Badges on Mobile */
  .hero-visual-stage {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .phone-mockup-container {
    width: 270px;
    height: 540px;
    border-radius: 38px;
    padding: 8px;
  }

  .phone-inner-screen {
    border-radius: 30px;
  }

  .floating-card {
    position: static;
    transform: none !important;
    animation: none !important;
    width: 100%;
    max-width: 290px;
    margin: 4px auto;
    padding: 10px 14px;
    border-radius: 12px;
    white-space: normal;
  }

  .floating-card-3 {
    display: flex;
  }

  .f-card-icon {
    width: 32px;
    height: 32px;
    font-size: 1rem;
    border-radius: 8px;
  }

  .f-card-label {
    font-size: 0.7rem;
  }

  .f-card-val {
    font-size: 0.85rem;
    word-break: keep-all;
  }

  /* Target Audience Section */
  .section-block {
    padding: 48px 0;
  }

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

  .section-title {
    font-size: clamp(1.45rem, 5vw, 2.1rem);
    word-break: keep-all;
    text-wrap: balance;
  }

  .section-subtitle {
    font-size: 0.95rem;
    line-height: 1.6;
    word-break: keep-all;
  }

  .audience-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .audience-card {
    padding: 22px 18px;
    border-radius: 16px;
  }

  .audience-icon-box {
    width: 46px;
    height: 46px;
    font-size: 1.4rem;
    margin-bottom: 14px;
  }

  .audience-card-title {
    font-size: 1.12rem;
    word-break: keep-all;
  }

  .audience-card-desc {
    font-size: 0.88rem;
    line-height: 1.6;
    word-break: keep-all;
  }

  .audience-bullet {
    font-size: 0.82rem;
    word-break: keep-all;
  }

  /* Interactive Simulator Section */
  .simulator-phone-frame {
    width: 270px;
    height: 540px;
    border-radius: 38px;
    padding: 8px;
  }

  .simulator-screen-viewport {
    border-radius: 30px;
  }

  .simulator-tabs-container {
    gap: 12px;
  }

  .feature-tab-btn {
    padding: 14px 16px;
    gap: 12px;
    border-radius: 14px;
  }

  .f-tab-icon {
    width: 38px;
    height: 38px;
    font-size: 1.1rem;
    border-radius: 10px;
  }

  .f-tab-content h3 {
    font-size: 1.02rem;
    margin-bottom: 4px;
    word-break: keep-all;
  }

  .f-tab-content p {
    font-size: 0.84rem;
    line-height: 1.5;
    margin-bottom: 6px;
    word-break: keep-all;
  }

  .f-tab-tag {
    font-size: 0.7rem;
    padding: 2px 7px;
    white-space: nowrap;
  }

  /* Privacy Banner Card */
  .privacy-banner-card {
    padding: 24px 18px;
    border-radius: 20px;
    text-align: center;
    gap: 20px;
  }

  .privacy-banner-title {
    font-size: 1.35rem;
    margin-bottom: 10px;
    word-break: keep-all;
    text-wrap: balance;
  }

  .privacy-banner-desc {
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 16px;
    word-break: keep-all;
  }

  .privacy-badges-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .privacy-badge-item {
    justify-content: center;
    font-size: 0.82rem;
    padding: 10px;
    word-break: keep-all;
  }

  .privacy-actions {
    align-items: center;
    width: 100%;
  }

  .btn-privacy-read {
    width: 100%;
    justify-content: center;
    padding: 12px;
    font-size: 0.88rem;
  }

  /* FAQ Section */
  .faq-accordion-container {
    gap: 10px;
  }

  .faq-question-btn {
    padding: 14px 16px;
    font-size: 0.94rem;
    gap: 10px;
    line-height: 1.45;
    word-break: keep-all;
  }

  .faq-answer {
    font-size: 0.86rem;
    line-height: 1.6;
    word-break: keep-all;
  }

  .faq-item.active .faq-answer {
    padding: 0 16px 14px;
  }

  /* Bottom CTA Banner & QR Wrapper */
  .cta-banner-section {
    padding: 36px 18px;
    margin: 30px 0 50px;
    border-radius: 22px;
  }

  .cta-banner-title {
    font-size: clamp(1.4rem, 5vw, 2.1rem);
    line-height: 1.3;
    margin-bottom: 12px;
    word-break: keep-all;
    text-wrap: balance;
  }

  .cta-banner-subtitle {
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 24px;
    word-break: keep-all;
  }

  .cta-buttons-center {
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 20px;
    gap: 12px;
  }

  .qr-code-wrapper {
    display: flex;
    flex-direction: column;
    text-align: center;
    align-items: center;
    padding: 16px;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    gap: 12px;
  }

  .qr-code-thumb-wrap {
    width: 80px;
    height: 80px;
  }

  .qr-code-img {
    width: 80px;
    height: 80px;
  }

  .qr-code-info {
    align-items: center;
    text-align: center;
  }

  .qr-code-label-row {
    justify-content: center;
    flex-direction: column;
    gap: 4px;
  }

  .qr-code-label {
    font-size: 0.88rem;
    word-break: keep-all;
  }

  /* Footer */
  .site-footer {
    padding: 40px 0 30px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 32px;
  }

  .footer-brand p {
    max-width: 100%;
    font-size: 0.88rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    padding-top: 24px;
  }
}

/* ==========================================
   Modal Dialog Mobile Rules (QR & Video)
   ========================================== */
@media (max-width: 640px) {
  .qr-modal-backdrop {
    padding: 12px;
  }

  .qr-modal-container {
    padding: 24px 16px 18px;
    width: calc(100% - 16px);
    max-height: 92vh;
    margin: 8px;
    border-radius: 20px;
  }

  .qr-modal-header {
    padding-right: 24px;
    padding-left: 0;
    margin-bottom: 16px;
  }

  .qr-modal-title {
    font-size: 1.25rem;
    word-break: keep-all;
  }

  .qr-modal-subtitle {
    font-size: 0.82rem;
    word-break: keep-all;
  }

  .qr-modal-platforms {
    flex-direction: column;
    gap: 14px;
    margin-bottom: 14px;
  }

  .qr-platform-card {
    width: 100%;
    padding: 14px;
  }

  .qr-display-box {
    max-width: 160px;
    aspect-ratio: 1;
    padding: 8px;
    margin: 0 auto;
  }

  .qr-modal-img {
    width: 100%;
    height: 100%;
  }

  .qr-modal-bottom-tip {
    font-size: 0.76rem;
    padding: 8px 10px;
    word-break: keep-all;
  }

  .qr-modal-close {
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
  }

  /* Video Modal Mobile */
  .video-modal-backdrop {
    padding: 12px;
  }

  .video-modal-container {
    border-radius: 14px;
  }

  .video-modal-close {
    top: -42px;
    right: 0;
    background: rgba(255, 255, 255, 0.25);
  }
}