/* ===================================================================
   魔法喵 VPN (Magic Cat VPN) - Official Stylesheet (Pure CSS3)
   Theme: Cosmic Aurora & Cyber Cyan on Deep Obsidian
   - Electric Violet (#8B5CF6) & Neon Purple (#A855F7)
   - Cyber Cyan (#06B6D4) & Radiant Aqua (#22D3EE)
   - Solar Gold (#F59E0B) & Star Amber (#FBBF24)
   - Deep Obsidian Base (#080811)
   Ultra-fast, Zero Dependencies, Tactile Distinct Buttons, Smooth Fades
   =================================================================== */

:root {
  /* Cosmic Dark Palette */
  --bg-dark: #080811;
  --bg-surface: #0f0f1e;
  --bg-card: #151429;
  --bg-card-hover: #1d1b38;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(139, 92, 246, 0.22);
  --border-focus: rgba(139, 92, 246, 0.6);

  /* Primary Accent: Mystic Purple & Neon Violet */
  --violet-300: #d8b4fe;
  --violet-400: #c084fc;
  --violet-500: #a855f7;
  --violet-600: #8b5cf6;
  --violet-700: #7c3aed;
  --violet-glow: rgba(168, 85, 247, 0.45);
  --violet-glow-intense: rgba(168, 85, 247, 0.7);

  /* Secondary Accent: Electric Cyan & Aqua Pulse */
  --cyan-300: #67e8f9;
  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;
  --cyan-glow: rgba(6, 182, 212, 0.4);

  /* Highlight: Solar Gold & Amber */
  --amber-300: #fde047;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.4);

  /* Status Colors */
  --emerald-400: #34d399;
  --emerald-500: #10b981;
  --emerald-glow: rgba(16, 185, 129, 0.35);

  /* Typography */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  /* Spacing & Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.18s ease-out;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  overflow-x: clip;
  position: relative;
  background: radial-gradient(circle at 50% 0%, #1e1338 0%, #080811 55%);
}

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

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

ul {
  list-style: none;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

/* ===================================================================
   Fade In & Keyframe Animations
   =================================================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 16px rgba(168, 85, 247, 0.35);
  }
  50% {
    box-shadow: 0 0 28px rgba(168, 85, 247, 0.65);
  }
}

.fade-in {
  animation: fadeIn 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* ===================================================================
   Typography & Helper Utilities
   =================================================================== */

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #d8b4fe 40%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-gold {
  background: linear-gradient(135deg, #fef08a 0%, #fbbf24 60%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-padding {
  padding: 96px 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
  animation: fadeIn 0.6s ease-out both;
}

.section-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.35);
  color: var(--violet-300);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

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

/* ===================================================================
   Distinct & Tactile Buttons (Best Web Design Principles)
   =================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  font-size: 0.96rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  text-align: center;
}

/* Primary Action Button: Electric Violet & Neon Pulse with 3D Bevel */
.btn-primary {
  background: linear-gradient(135deg, #a855f7 0%, #7c3aed 50%, #6366f1 100%);
  color: #ffffff !important;
  border: 1.5px solid rgba(255, 255, 255, 0.32);
  box-shadow: 0 4px 18px var(--violet-glow), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--violet-glow-intense), inset 0 1px 0 rgba(255, 255, 255, 0.55);
  background: linear-gradient(135deg, #c084fc 0%, #8b5cf6 50%, #4f46e5 100%);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 2px 10px var(--violet-glow);
}

/* Secondary Button: Frosted Obsidian Glass with Violet Edge */
.btn-secondary {
  background: rgba(21, 20, 41, 0.85);
  color: #f8fafc !important;
  border: 1.5px solid rgba(139, 92, 246, 0.45);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.btn-secondary:hover {
  background: rgba(139, 92, 246, 0.25);
  border-color: rgba(168, 85, 247, 0.75);
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(139, 92, 246, 0.35);
}

.btn-secondary:active {
  transform: translateY(1px);
}

/* Accent Highlight Button: Solar Gold & Amber with Crisp Bevel */
.btn-accent {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 60%, #d97706 100%);
  color: #080811 !important;
  box-shadow: 0 4px 20px var(--amber-glow), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  font-weight: 800;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(245, 158, 11, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  background: linear-gradient(135deg, #fde047 0%, #fbbf24 60%, #ea580c 100%);
}

.btn-accent:active {
  transform: translateY(1px);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 16px 38px;
  font-size: 1.12rem;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* ===================================================================
   Navigation Bar (Clear Border Between Sticky Nav & Body)
   =================================================================== */

.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(8, 8, 17, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 2px solid rgba(139, 92, 246, 0.4);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.65), 0 1px 0 rgba(255, 255, 255, 0.05);
  transition: var(--transition);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.3px;
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  transition: var(--transition-fast);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.08) rotate(4deg);
}

.brand-logo span {
  background: linear-gradient(135deg, #ffffff 30%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #a855f7, #06b6d4);
  transition: width 0.25s ease;
  border-radius: 2px;
}

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

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

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

.mobile-menu-btn {
  display: none;
  color: #ffffff;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.35);
}

.mobile-drawer {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(15, 15, 30, 0.98);
  border-bottom: 2px solid rgba(139, 92, 246, 0.45);
  padding: 24px;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.85);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.mobile-drawer.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

/* ===================================================================
   Hero Section
   =================================================================== */

.hero-section {
  position: relative;
  padding: 90px 0 100px;
  overflow: hidden;
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-glow-1 {
  position: absolute;
  top: -120px;
  left: 10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.25) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-glow-2 {
  position: absolute;
  top: 40px;
  right: 5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 1;
}

.discount-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.18) 0%, rgba(168, 85, 247, 0.2) 100%);
  border: 1.5px solid rgba(245, 158, 11, 0.5);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  color: var(--amber-300);
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 22px;
  box-shadow: 0 0 22px rgba(245, 158, 11, 0.25);
  animation: pulse-border 2.5s infinite;
}

@keyframes pulse-border {
  0%, 100% {
    border-color: rgba(245, 158, 11, 0.5);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.25);
  }
  50% {
    border-color: rgba(168, 85, 247, 0.85);
    box-shadow: 0 0 28px rgba(168, 85, 247, 0.45);
  }
}

.hero-title {
  font-size: 3.3rem;
  font-weight: 850;
  line-height: 1.18;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 32px;
}

.hero-trust-row {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.hero-trust-item svg {
  color: var(--emerald-400);
}

/* Hero Right Side Art */
.hero-art-col {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-graphic-wrap {
  position: relative;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 1 / 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.art-halo {
  position: absolute;
  inset: 15%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.35) 0%, rgba(6, 182, 212, 0.15) 50%, transparent 75%);
  filter: blur(40px);
  border-radius: 50%;
  animation: float-halo 6s ease-in-out infinite alternate;
}

@keyframes float-halo {
  0% { transform: scale(0.92) translate(0, 0); }
  100% { transform: scale(1.08) translate(8px, -8px); }
}

.art-floating-badge {
  position: absolute;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  background: rgba(18, 17, 35, 0.9);
  backdrop-filter: blur(14px);
  border: 1.5px solid rgba(139, 92, 246, 0.35);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.65);
  font-size: 0.82rem;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 10;
  transition: var(--transition);
}

.art-floating-badge:hover {
  transform: scale(1.06);
  border-color: var(--violet-400);
  box-shadow: 0 12px 28px rgba(168, 85, 247, 0.4);
}

.badge-top-left {
  top: 6%;
  left: -8%;
  animation: badge-bob-1 5s ease-in-out infinite;
}

.badge-top-right {
  top: 14%;
  right: -10%;
  animation: badge-bob-2 6s ease-in-out infinite;
}

.badge-bottom-right {
  bottom: 8%;
  right: -6%;
  animation: badge-bob-1 5.5s ease-in-out infinite;
}

.badge-bottom-left {
  bottom: 12%;
  left: -6%;
  animation: badge-bob-2 6.5s ease-in-out infinite;
}

@keyframes badge-bob-1 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes badge-bob-2 {
  0%, 100% { transform: translateY(-8px); }
  50% { transform: translateY(0); }
}

.ping-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--emerald-400);
  box-shadow: 0 0 10px var(--emerald-400);
  animation: ping 1.8s cubic-bezier(0, 0, 0.2, 1) infinite;
}

/* ===================================================================
   Dynamic Cards Section (Core Features)
   =================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #a855f7, #06b6d4);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: rgba(168, 85, 247, 0.55);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.55), 0 0 25px rgba(168, 85, 247, 0.2);
}

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

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.6rem;
}

.feature-title {
  font-size: 1.28rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: #ffffff;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Streaming & AI Showcase Card */
.media-ai-card {
  background: linear-gradient(135deg, rgba(21, 20, 41, 0.95) 0%, rgba(13, 13, 26, 0.98) 100%);
  border: 1.5px solid rgba(139, 92, 246, 0.35);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
  transition: var(--transition);
}

.media-ai-card:hover {
  border-color: rgba(168, 85, 247, 0.5);
}

.media-ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.media-ai-col h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
}

.media-ai-col p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.app-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 500;
  transition: var(--transition-fast);
}

.app-tag:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}

/* ===================================================================
   Pricing Section
   =================================================================== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(168, 85, 247, 0.55);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.65), 0 0 25px rgba(168, 85, 247, 0.25);
}

.pricing-card.featured {
  background: linear-gradient(180deg, #1f1b3b 0%, #151429 100%);
  border: 2px solid var(--violet-500);
  box-shadow: 0 12px 36px rgba(168, 85, 247, 0.3);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow: 0 18px 46px rgba(168, 85, 247, 0.45);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  color: #080811;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

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

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  min-height: 42px;
}

.pricing-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.price {
  font-size: 3rem;
  font-weight: 850;
  color: #ffffff;
  line-height: 1;
}

.billing-cycle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.plan-feature-item svg {
  color: var(--emerald-400);
  flex-shrink: 0;
}

/* ===================================================================
   Supported Platforms & Download Section
   =================================================================== */

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.platform-card:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: rgba(168, 85, 247, 0.5);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.55), 0 0 20px rgba(168, 85, 247, 0.15);
}

.platform-icon {
  width: 60px;
  height: 60px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.35);
  color: var(--violet-300);
}

.platform-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #ffffff;
}

.platform-clients {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 40px;
  line-height: 1.5;
}

/* ===================================================================
   Why Choose Section (SEO/GEO Core Insights)
   =================================================================== */

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-card {
  background: rgba(21, 20, 41, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}

.why-card:hover {
  background: rgba(25, 24, 48, 0.95);
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

.why-emoticon {
  font-size: 2rem;
  margin-bottom: 14px;
  display: inline-block;
}

.why-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

.why-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===================================================================
   Secondary CTA Section
   =================================================================== */

.cta-banner {
  background: linear-gradient(135deg, #1b1638 0%, #111024 100%);
  border: 1.5px solid rgba(139, 92, 246, 0.4);
  border-radius: var(--radius-lg);
  padding: 64px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.65);
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(168, 85, 247, 0.28) 0%, transparent 70%);
  filter: blur(50px);
  pointer-events: none;
}

.cta-banner-title {
  font-size: 2.5rem;
  font-weight: 850;
  margin-bottom: 16px;
  color: #ffffff;
  position: relative;
}

.cta-banner-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
  position: relative;
}

/* ===================================================================
   Testimonials Marquee Section
   =================================================================== */

.marquee-container {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 20px 0;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: marquee-scroll 38s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.testimonial-card {
  width: 360px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 26px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: rgba(168, 85, 247, 0.5);
  transform: translateY(-4px);
}

.testimonial-stars {
  color: #fbbf24;
  font-size: 1.1rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
}

.author-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #a855f7, #06b6d4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #ffffff;
  font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(168, 85, 247, 0.4);
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffffff;
}

.author-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===================================================================
   FAQ Section (Native Details & Summary Accordion)
   =================================================================== */

.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.faq-item[open] {
  border-color: rgba(168, 85, 247, 0.55);
  background: var(--bg-card-hover);
  box-shadow: 0 8px 24px rgba(168, 85, 247, 0.15);
}

.faq-summary {
  padding: 22px 26px;
  font-size: 1.08rem;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
  transition: var(--transition-fast);
}

.faq-summary:hover {
  color: var(--violet-300);
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  width: 20px;
  height: 20px;
  color: var(--violet-400);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 26px 22px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 16px;
  animation: fadeIn 0.35s ease-out both;
}

/* ===================================================================
   Footer (Strictly 4 links per instructions)
   =================================================================== */

.site-footer {
  background: #06060c;
  border-top: 2px solid rgba(139, 92, 246, 0.3);
  padding: 48px 0 36px;
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 36px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--violet-400);
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===================================================================
   Breadcrumbs & Article Hub Layouts
   =================================================================== */

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb-nav a {
  color: var(--text-secondary);
}

.breadcrumb-nav a:hover {
  color: var(--violet-300);
}

.breadcrumb-separator {
  color: var(--text-muted);
}

.article-hero {
  padding: 60px 0 40px;
  text-align: center;
  animation: fadeIn 0.6s ease-out both;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.article-card:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: rgba(168, 85, 247, 0.55);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.55), 0 0 20px rgba(168, 85, 247, 0.15);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.article-tag {
  color: var(--violet-300);
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.article-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
  line-height: 1.45;
}

.article-card-excerpt {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--violet-400);
  transition: var(--transition-fast);
}

.article-read-more:hover {
  color: var(--cyan-400);
  transform: translateX(3px);
}

/* Standalone Content Prose (About, Terms, Privacy, Single Article) */
.prose-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 0 80px;
  animation: fadeIn 0.6s ease-out both;
}

.prose-content {
  background: var(--bg-card);
  border: 1.5px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 48px;
  line-height: 1.85;
  color: #cbd5e1;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
}

.prose-content h1 {
  font-size: 2.2rem;
  color: #ffffff;
  margin-bottom: 20px;
}

.prose-content h2 {
  font-size: 1.5rem;
  color: #ffffff;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.prose-content h3 {
  font-size: 1.2rem;
  color: #ffffff;
  margin: 24px 0 12px;
}

.prose-content p {
  margin-bottom: 18px;
  font-size: 1rem;
}

.prose-content ul, .prose-content ol {
  margin: 16px 0 24px 24px;
}

.prose-content li {
  margin-bottom: 8px;
}

/* ===================================================================
   Responsive Media Queries (@media)
   =================================================================== */

@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .features-grid, .pricing-grid, .articles-grid, .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    margin: 0 auto 28px;
  }
  .hero-cta-group {
    justify-content: center;
  }
  .hero-trust-row {
    justify-content: center;
    flex-wrap: wrap;
  }
  .features-grid, .pricing-grid, .platforms-grid, .why-grid, .articles-grid {
    grid-template-columns: 1fr;
  }
  .media-ai-grid {
    grid-template-columns: 1fr;
  }
  .prose-content {
    padding: 24px;
  }
  .cta-banner-title {
    font-size: 1.8rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
  }
}