/* ==========================================================================
   NAIS — The Solution for Study
   Official Liquid Glass Stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400..900;1,400..900&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Liquid Glass Palette */
  --bg-deep: #050816;
  --glass-card: rgba(12, 16, 40, 0.60);
  --glass-card-hover: rgba(16, 22, 52, 0.72);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-specular: rgba(255, 255, 255, 0.26);
  --glass-shine: inset 0 1px 1px rgba(255, 255, 255, 0.18);
  --glass-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --glass-blur: blur(28px) saturate(190%);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.78);
  --text-muted: rgba(255, 255, 255, 0.52);

  --accent-indigo: #6366f1;
  --accent-violet: #8b5cf6;
  --accent-cyan: #38bdf8;
  --accent-emerald: #34d399;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 36px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
  max-width: 100vw;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  overflow-x: hidden;
  max-width: 100vw;
  line-height: 1.5;
  min-height: 100vh;
}

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

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

/* ==========================================================================
   Full-Page Fixed Liquid Canvas
   ========================================================================== */
#hero-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* ==========================================================================
   Navigation Bar (Floating Liquid Glass Pill)
   ========================================================================== */
.navbar {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1200px, calc(100% - 36px));
  z-index: 100;
  padding: 12px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 14, 34, 0.65);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-top: 1px solid var(--glass-border-specular);
  border-radius: 9999px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), var(--glass-shine);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(8, 11, 28, 0.82);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6), var(--glass-shine);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-weight: 800;
  letter-spacing: 0.24em;
  font-size: 1.15rem;
  color: #ffffff;
  text-transform: uppercase;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

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

.nav-link {
  font-size: 0.90rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: #ffffff;
}

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-top: 1px solid rgba(255, 255, 255, 0.35);
  color: #ffffff;
  font-size: 0.86rem;
  font-weight: 600;
  border-radius: 9999px;
  backdrop-filter: blur(10px);
  box-shadow: var(--glass-shine);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-cta-btn:hover {
  background: #ffffff;
  color: #0b0f19;
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 130px 24px 80px;
  background: transparent;
  color: #ffffff;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 960px;
  display: flex;
  flex-direction: column;
  align-items: center;
  user-select: none;
  pointer-events: auto;
}

/* NAIS Top Label */
.hero-tag {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  text-shadow: none;
}

/* the solution for study. (Pure clean editorial serif, NO stroke, NO glow) */
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.3rem, 8.5vw, 6.5rem);
  font-weight: 400;
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: #ffffff;
  text-shadow: none;
  -webkit-text-stroke: 0;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.82);
  max-width: 620px;
  line-height: 1.6;
  margin-bottom: 40px;
  text-shadow: none;
}

/* Hero Action Buttons */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-bottom: 48px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 9999px;
  background: #ffffff;
  color: #0b0f19;
  font-weight: 600;
  font-size: 0.98rem;
  box-shadow: 0 10px 30px rgba(255, 255, 255, 0.24);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(255, 255, 255, 0.38);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.20);
  border-top: 1px solid rgba(255, 255, 255, 0.35);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.98rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--glass-shine), 0 8px 24px rgba(0, 0, 0, 0.28);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), 0 12px 30px rgba(0, 0, 0, 0.35);
}

.btn-ios-dev {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px dashed rgba(255, 255, 255, 0.24);
  border-top: 1px dashed rgba(255, 255, 255, 0.35);
  color: rgba(255, 255, 255, 0.72);
  font-weight: 500;
  font-size: 0.95rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--glass-shine);
  cursor: default;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.btn-ios-dev:hover {
  border-color: rgba(255, 255, 255, 0.45);
  color: #ffffff;
}

/* Interactive PC Hint Pill */
.hero-pc-hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 7px 18px;
  border-radius: 9999px;
  background: rgba(10, 14, 34, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  box-shadow: var(--glass-shine);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #818cf8;
  box-shadow: 0 0 10px #818cf8;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* Chevron Down */
.hero-scroll-indicator {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  color: rgba(255, 255, 255, 0.65);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: color 0.2s ease;
  animation: bounceDown 2.2s infinite;
}

.hero-scroll-indicator:hover {
  color: #ffffff;
}

@keyframes bounceDown {
  0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
  40% { transform: translate(-50%, -8px); }
  60% { transform: translate(-50%, -4px); }
}

/* ==========================================================================
   Section 2: "Our technology works for you." (Liquid Glass Showcase)
   ========================================================================== */
.showcase-section {
  padding: 80px 24px;
  background: transparent;
  position: relative;
  z-index: 2;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.showcase-glass-card {
  background: var(--glass-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-top: 1px solid var(--glass-border-specular);
  border-radius: var(--radius-xl);
  padding: 64px 56px;
  box-shadow: var(--glass-shadow), var(--glass-shine);
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}

.showcase-text-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.section-label {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #818cf8;
}

.section-serif-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 400;
  line-height: 1.12;
  color: #ffffff;
  letter-spacing: -0.015em;
}

.section-lead-text {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.feature-bullets {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 12px;
}

.feature-bullet-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(12px);
  transition: all 0.25s ease;
}

.feature-bullet-item:hover {
  background: rgba(255, 255, 255, 0.065);
  border-color: rgba(255, 255, 255, 0.20);
  transform: translateX(4px);
}

.bullet-icon-box {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.32);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.bullet-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: #ffffff;
  margin-bottom: 4px;
}

.bullet-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.bullet-desc code {
  background: rgba(99, 102, 241, 0.16);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 0.85em;
}

/* ==========================================================================
   Interactive Smartphone Frame & Tabs
   ========================================================================== */
.phone-mockup-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* Tabs switcher above phone */
.mockup-tabs {
  display: flex;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-top: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 9999px;
  padding: 4px;
  gap: 4px;
  margin-bottom: 24px;
  box-shadow: var(--glass-shine);
}

.mockup-tab-btn {
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  border-radius: 9999px;
  transition: all 0.2s ease;
}

.mockup-tab-btn.active, .mockup-tab-btn:hover {
  background: rgba(255, 255, 255, 0.20);
  border: 1px solid rgba(255, 255, 255, 0.32);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

/* Smartphone Hardware Frame */
.smartphone-frame {
  width: 320px;
  max-width: 100%;
  aspect-ratio: 9 / 18.2;
  height: auto;
  background: #0f1426;
  border-radius: 46px;
  padding: 10px;
  box-shadow:
    0 0 0 2px rgba(255, 255, 255, 0.18),
    0 24px 60px rgba(0, 0, 0, 0.6),
    inset 0 1px 1px rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.smartphone-frame:hover {
  transform: translateY(-4px) scale(1.01);
}

/* Screen Notch / Dynamic Island */
.phone-notch {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 90px;
  height: 22px;
  background: #000000;
  border-radius: 14px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 12px;
}

.notch-lens {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #1e293b;
}

/* Inner Screen */
.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 36px;
  overflow: hidden;
  position: relative;
  background: #070b12;
}

.phone-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: none;
  animation: fadeIn 0.3s ease;
}

.phone-screen-img.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(1.02); }
  to { opacity: 1; transform: scale(1); }
}

/* ==========================================================================
   Section 3: Dual Product Deep-Dive (Liquid Glass Cards)
   ========================================================================== */
.ecosystem-section {
  padding: 100px 24px;
  background: transparent;
  position: relative;
  z-index: 2;
}

.section-header-center {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px auto;
}

.product-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 32px;
}

.product-card {
  background: var(--glass-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-top: 1px solid var(--glass-border-specular);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--glass-shadow), var(--glass-shine);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  transform: translateY(-5px);
  background: var(--glass-card-hover);
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.55), inset 0 1px 1px rgba(255, 255, 255, 0.24);
}

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
  width: fit-content;
  backdrop-filter: blur(10px);
}

.card-badge.tg {
  background: rgba(14, 165, 233, 0.16);
  border: 1px solid rgba(14, 165, 233, 0.32);
  color: #38bdf8;
}

.card-badge.apk {
  background: rgba(99, 102, 241, 0.16);
  border: 1px solid rgba(99, 102, 241, 0.32);
  color: #818cf8;
}

.card-badge.ios {
  background: rgba(245, 158, 11, 0.16);
  border: 1px solid rgba(245, 158, 11, 0.32);
  color: #fbbf24;
}

.product-card.ios-card {
  border-style: dashed;
}

.product-card-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 400;
  color: #ffffff;
  margin-bottom: 12px;
}

.product-card-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.card-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.card-feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.85);
}

.check-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(52, 211, 153, 0.18);
  border: 1px solid rgba(52, 211, 153, 0.35);
  color: #34d399;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
}

.product-card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s ease;
}

.btn-telegram {
  background: linear-gradient(135deg, #0284c7, #0ea5e9);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.35);
}

.btn-telegram:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(2, 132, 199, 0.5);
}

.btn-apk {
  background: linear-gradient(135deg, #4f46e5, #6366f1);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
}

.btn-apk:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(79, 70, 229, 0.5);
}

.btn-ios-disabled {
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.45);
  cursor: not-allowed;
}

/* ==========================================================================
   Footer (Liquid Glass Bar)
   ========================================================================== */
.footer {
  background: rgba(6, 9, 24, 0.85);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text-muted);
  padding: 60px 24px 40px 24px;
  border-top: 1px solid var(--glass-border);
  position: relative;
  z-index: 2;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.footer-logo {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: #ffffff;
  text-transform: uppercase;
}

.footer-note {
  font-size: 0.90rem;
  max-width: 600px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 900px) {
  .navbar {
    width: min(1200px, calc(100% - 24px));
    padding: 10px 18px;
  }
  .nav-links {
    display: none;
  }
  .nav-actions {
    display: flex;
    align-items: center;
  }
  .nav-cta-btn {
    padding: 7px 14px;
    font-size: 0.82rem;
    gap: 6px;
  }
  .showcase-section {
    padding: 60px 16px;
  }
  .showcase-glass-card {
    padding: 40px 24px;
  }
  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .phone-mockup-wrapper {
    order: -1;
  }
  .ecosystem-section {
    padding: 70px 16px;
  }
  .product-cards-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 600px) {
  html, body {
    overflow-x: hidden;
    max-width: 100vw;
  }

  /* Floating Navbar */
  .navbar {
    top: 12px;
    width: calc(100% - 20px);
    padding: 8px 14px;
  }
  .nav-brand {
    font-size: 1.05rem;
    letter-spacing: 0.18em;
    gap: 8px;
  }
  .brand-badge {
    width: 28px;
    height: 28px;
    border-radius: 8px;
  }
  .brand-badge svg {
    width: 15px;
    height: 15px;
  }
  .nav-cta-btn {
    padding: 7px 13px;
    font-size: 0.80rem;
    gap: 5px;
  }

  /* Hero Section */
  .hero-section {
    padding: 95px 14px 45px 14px;
    min-height: auto;
  }
  .hero-tag {
    font-size: 0.80rem;
    letter-spacing: 0.22em;
    margin-bottom: 16px;
  }
  .hero-title {
    font-size: clamp(2.2rem, 10vw, 3.2rem);
    line-height: 1.08;
    margin-bottom: 18px;
  }
  .hero-subtitle {
    font-size: 0.95rem;
    line-height: 1.55;
    margin-bottom: 26px;
    padding: 0 4px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    align-items: stretch;
    gap: 10px;
    margin-bottom: 30px;
  }
  .btn-primary,
  .btn-secondary,
  .btn-ios-dev {
    width: 100%;
    padding: 13px 18px;
    font-size: 0.88rem;
    justify-content: center;
    text-align: center;
    box-sizing: border-box;
  }
  .hero-pc-hint {
    font-size: 0.74rem;
    padding: 6px 14px;
    max-width: 95%;
    line-height: 1.35;
  }

  /* Showcase Section */
  .showcase-section {
    padding: 44px 10px;
  }
  .showcase-glass-card {
    padding: 26px 14px;
    border-radius: 22px;
  }
  .section-label {
    font-size: 0.76rem;
    letter-spacing: 0.16em;
    margin-bottom: 10px;
  }
  .section-serif-title {
    font-size: clamp(1.7rem, 6.8vw, 2.4rem);
    line-height: 1.15;
    margin-bottom: 16px;
  }
  .section-lead-text {
    font-size: 0.92rem;
    line-height: 1.55;
    margin-bottom: 28px;
  }
  .feature-bullets {
    gap: 18px;
  }
  .feature-bullet-item {
    gap: 12px;
  }
  .bullet-icon-box {
    width: 38px;
    height: 38px;
    min-width: 38px;
    font-size: 1.15rem;
  }
  .bullet-title {
    font-size: 1.0rem;
  }
  .bullet-desc {
    font-size: 0.85rem;
    line-height: 1.5;
  }

  /* Responsive Mockup Tabs */
  .mockup-tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    width: 100%;
    max-width: 280px;
    border-radius: 16px;
    padding: 4px;
    gap: 4px;
    margin-bottom: 18px;
  }
  .mockup-tab-btn {
    padding: 8px 6px;
    font-size: 0.78rem;
    text-align: center;
    border-radius: 12px;
    white-space: nowrap;
  }

  /* Responsive Smartphone Frame */
  .smartphone-frame {
    width: 275px;
    max-width: 100%;
    border-radius: 38px;
    padding: 8px;
  }
  .phone-notch {
    width: 74px;
    height: 18px;
    top: 12px;
    border-radius: 12px;
  }
  .phone-screen {
    border-radius: 30px;
  }

  /* Ecosystem Product Cards */
  .ecosystem-section {
    padding: 50px 10px;
  }
  .section-header-center {
    margin-bottom: 36px;
    padding: 0 6px;
  }
  .product-card {
    padding: 24px 16px;
    border-radius: 20px;
  }
  .product-card-title {
    font-size: 1.35rem;
  }
  .product-card-desc {
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 20px;
  }
  .product-feature-list {
    gap: 10px;
    margin-bottom: 24px;
  }
  .product-feature-list li {
    font-size: 0.84rem;
    gap: 8px;
  }
  .product-card-btn {
    width: 100%;
    padding: 13px 16px;
    font-size: 0.88rem;
    justify-content: center;
    text-align: center;
    box-sizing: border-box;
  }

  /* Footer */
  .footer {
    padding: 40px 14px 28px 14px;
  }
  .footer-logo {
    font-size: 1.15rem;
  }
  .footer-note {
    font-size: 0.82rem;
    line-height: 1.5;
  }
  .footer-copy {
    font-size: 0.76rem;
  }
}

@media (max-width: 360px) {
  .navbar {
    padding: 6px 10px;
  }
  .nav-brand {
    font-size: 0.95rem;
    gap: 6px;
  }
  .nav-cta-btn {
    padding: 5px 8px;
    font-size: 0.74rem;
    gap: 3px;
  }
  .nav-cta-btn svg {
    width: 13px;
    height: 13px;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .smartphone-frame {
    width: 250px;
    border-radius: 34px;
    padding: 7px;
  }
  .phone-screen {
    border-radius: 27px;
  }
  .mockup-tabs {
    max-width: 250px;
  }
}

/* ==========================================================================
   Legal & Privacy Policy Styles (Liquid Glass Design)
   ========================================================================== */
.legal-page {
  position: relative;
  z-index: 1;
  padding: 130px 20px 80px;
  min-height: 100vh;
}

.legal-container {
  max-width: 980px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.legal-glass-card {
  background: var(--glass-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 54px 60px;
  box-shadow: var(--glass-shadow);
  color: var(--text-primary);
}

.legal-header {
  margin-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 30px;
}

.legal-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(99, 102, 241, 0.18);
  border: 1px solid rgba(99, 102, 241, 0.35);
  color: #a5b4fc;
  margin-bottom: 18px;
}

.legal-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: #ffffff;
  margin-bottom: 16px;
}

.legal-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

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

.legal-warning-box {
  background: rgba(220, 38, 38, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.28);
  border-left: 4px solid #ef4444;
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin: 32px 0;
  backdrop-filter: blur(12px);
}

.legal-warning-title {
  font-size: 0.96rem;
  font-weight: 700;
  color: #fca5a5;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.legal-warning-text {
  font-size: 0.90rem;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.6;
}

.legal-toc {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 32px 0 44px;
}

.legal-toc-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.legal-toc-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 8px 20px;
}

.legal-toc-list a {
  font-size: 0.88rem;
  color: #93c5fd;
  text-decoration: none;
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legal-toc-list a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.legal-section {
  margin-bottom: 44px;
  scroll-margin-top: 100px;
}

.legal-section-title {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 400;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.legal-section-title .section-num {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  color: #818cf8;
}

.legal-text {
  font-size: 0.94rem;
  line-height: 1.72;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 16px;
}

.legal-text strong {
  color: #ffffff;
  font-weight: 600;
}

.legal-clauses {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 16px 0;
}

.legal-clause-item {
  font-size: 0.93rem;
  line-height: 1.68;
  color: rgba(255, 255, 255, 0.82);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.legal-clause-num {
  font-weight: 700;
  color: #a5b4fc;
  min-width: 32px;
  font-size: 0.88rem;
}

.legal-table-wrapper {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.legal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
  background: rgba(10, 14, 34, 0.4);
}

.legal-table th {
  background: rgba(255, 255, 255, 0.06);
  padding: 14px 18px;
  font-weight: 600;
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  white-space: nowrap;
}

.legal-table td {
  padding: 14px 18px;
  color: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  vertical-align: top;
  line-height: 1.55;
}

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

.legal-table code, .legal-text code, .legal-clause-item code {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 2px 7px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.85em;
  color: #38bdf8;
}

.legal-footer-nav {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.btn-back-home {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 9999px;
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-back-home:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateX(-2px);
}

@media (max-width: 768px) {
  .legal-glass-card {
    padding: 32px 20px;
    border-radius: var(--radius-md);
  }
  .legal-title {
    font-size: 1.85rem;
  }
  .legal-toc-list {
    grid-template-columns: 1fr;
  }
  .legal-section-title {
    font-size: 1.3rem;
  }
  .legal-table th, .legal-table td {
    padding: 10px 12px;
    font-size: 0.82rem;
  }
}