/* ==========================================================================
   MESL ACCELERATION SERVICE - DEEP SPACE ORIGAMI & GEOMETRIC LAYERING DESIGN SYSTEM
   Base Palette: Obsidian Crystal Black (#0a0c10)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Michroma&family=Orbitron:wght@500;700;900&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-obsidian: #0a0c10;
  --bg-card-dark: #0f131a;
  --bg-card-hover: #151a24;
  --bg-poly-light: rgba(255, 255, 255, 0.03);
  
  --accent-cyan: #00f0ff;
  --accent-cyan-glow: rgba(0, 240, 255, 0.35);
  --accent-gold: #ffb700;
  --accent-gold-glow: rgba(255, 183, 0, 0.3);
  --accent-violet: #8a2be2;
  --accent-emerald: #00ffaa;
  
  --text-main: #f0f4f8;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --border-origami: rgba(0, 240, 255, 0.2);
  --border-crease: rgba(255, 255, 255, 0.08);
  --crease-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.7);
  
  /* Fonts */
  --font-sharp: 'Michroma', 'Orbitron', sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Transitions & Shadows */
  --ease-origami: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-neon: 0 10px 30px -10px rgba(0, 240, 255, 0.3);
  --shadow-depth: 0 20px 40px rgba(0, 0, 0, 0.8), 0 0 20px rgba(0, 240, 255, 0.05);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-obsidian);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

body {
  background-color: var(--bg-obsidian);
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 240, 255, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(138, 43, 226, 0.06) 0%, transparent 45%),
    linear-gradient(to bottom, #0a0c10 0%, #06080b 100%);
  background-attachment: fixed;
  min-height: 100vh;
  position: relative;
}

/* Background Polygon Mesh Grid overlay */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: 
    linear-gradient(rgba(0, 240, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* Dynamic Mouse Cursor Glow Effect */
.mouse-cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 380px; height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.18) 0%, rgba(138, 43, 226, 0.1) 40%, transparent 70%);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease, width 0.3s ease, height 0.3s ease;
  mix-blend-mode: screen;
  filter: blur(12px);
}

.mouse-cursor-dot {
  position: fixed;
  top: 0; left: 0;
  width: 10px; height: 10px;
  background: #00f0ff;
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 15px #00f0ff, 0 0 30px #00f0ff;
  transition: transform 0.1s ease;
}

/* Typography Base */
h1, h2, h3, h4, .brand-font {
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
  color: #ffffff;
}

.sharp-font {
  font-family: var(--font-sharp);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: all 0.3s var(--ease-origami);
}

a:hover {
  color: #ffffff;
  text-shadow: 0 0 10px var(--accent-cyan-glow);
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* Origami Section Header */
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem auto;
  position: relative;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-sharp);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.08);
  padding: 0.35rem 1.2rem;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  border-left: 2px solid var(--accent-cyan);
  border-right: 2px solid var(--accent-cyan);
  margin-bottom: 1rem;
  text-shadow: 0 0 8px var(--accent-cyan-glow);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* Modern Geometric Button */
.btn-origami {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 2.2rem;
  font-family: var(--font-sharp);
  font-size: 0.9rem;
  font-weight: 700;
  color: #0a0c10;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #00b8ff 100%);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  cursor: pointer;
  border: none;
  outline: none;
  transition: all 0.3s var(--ease-origami);
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
  text-decoration: none !important;
}

.btn-origami::before {
  content: '';
  position: absolute;
  top: 1px; left: 1px; right: 1px; bottom: 1px;
  background: transparent;
  clip-path: polygon(13px 0, 100% 0, 100% calc(100% - 13px), calc(100% - 13px) 100%, 0 100%, 0 13px);
  pointer-events: none;
}

.btn-origami:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.7);
  color: #000;
}

.btn-secondary-origami {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-family: var(--font-sharp);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-origami);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  cursor: pointer;
  transition: all 0.3s var(--ease-origami);
  backdrop-filter: blur(10px);
  text-decoration: none !important;
}

.btn-secondary-origami:hover {
  background: rgba(0, 240, 255, 0.12);
  border-color: var(--accent-cyan);
  color: #ffffff;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
  transform: translateY(-2px);
}

/* NAVIGATION */
.navbar {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  background: rgba(10, 12, 16, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.3s ease;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-sharp);
  font-size: 1.35rem;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 0.05em;
}

.brand-icon-origami {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-violet) 100%);
  clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--accent-cyan-glow);
  position: relative;
}

.brand-icon-origami::after {
  content: '';
  width: 16px; height: 16px;
  background: #0a0c10;
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; width: 0%; height: 2px;
  background: var(--accent-cyan);
  transition: width 0.3s var(--ease-origami);
  box-shadow: 0 0 8px var(--accent-cyan);
}

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

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* HERO SECTION */
.hero-section {
  padding: 160px 0 100px 0;
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.25);
  padding: 0.4rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
}

.trust-badge-dot {
  width: 8px; height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulseDot 1.8s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-cyan) 50%, var(--accent-violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 620px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.metric-card {
  background: rgba(15, 19, 26, 0.6);
  border-left: 2px solid var(--accent-cyan);
  padding: 1rem;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.metric-val {
  font-family: var(--font-sharp);
  font-size: 1.6rem;
  font-weight: 900;
  color: #ffffff;
}

.metric-lbl {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.hero-visual {
  position: relative;
  width: 100%;
  height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1000px;
}

#origamiCanvas {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0; left: 0;
  pointer-events: auto;
}

.hero-floating-badge {
  position: absolute;
  bottom: 30px;
  right: 20px;
  background: rgba(15, 19, 26, 0.85);
  border: 1px solid var(--border-origami);
  padding: 1rem 1.25rem;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-depth);
  z-index: 3;
}

.hero-floating-badge .speed-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sharp);
  font-size: 0.85rem;
  color: var(--accent-emerald);
}

/* CORE ADVANTAGES CARDS WITH MOUSE SPOTLIGHT GLOW */
.advantages-section {
  padding: 100px 0;
  position: relative;
}

.origami-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.origami-card {
  position: relative;
  background: var(--bg-card-dark);
  padding: 2.2rem 1.8rem;
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
  border: 1px solid var(--border-crease);
  transition: transform 0.4s var(--ease-origami), box-shadow 0.4s var(--ease-origami), background 0.4s ease;
  transform-style: preserve-3d;
  overflow: hidden;
}

.origami-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

/* Dynamic Spotlight Follower on Card */
.origami-card::after {
  content: '';
  position: absolute;
  top: var(--mouse-y, 50%);
  left: var(--mouse-x, 50%);
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 65%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.origami-card:hover::after {
  opacity: 1;
}

.origami-card:hover {
  transform: translateY(-8px) rotateX(4deg) rotateY(-2deg);
  background: var(--bg-card-hover);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 240, 255, 0.15);
}

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

.card-icon-box {
  width: 56px; height: 56px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-origami);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent-cyan);
  font-size: 1.6rem;
  transition: all 0.3s ease;
}

.origami-card:hover .card-icon-box {
  background: var(--accent-cyan);
  color: #0a0c10;
  box-shadow: 0 0 20px var(--accent-cyan);
}

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: #ffffff;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.card-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.card-tag {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.06);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  border: 1px solid rgba(0, 240, 255, 0.15);
}

/* PRICING PLANS */
.pricing-section {
  padding: 100px 0;
  position: relative;
  background: radial-gradient(circle at 50% 50%, rgba(15, 19, 26, 0.8) 0%, var(--bg-obsidian) 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.pricing-card {
  position: relative;
  background: var(--bg-card-dark);
  border: 1px solid var(--border-crease);
  clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.4s var(--ease-origami);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(0, 240, 255, 0.08) 0%, var(--bg-card-dark) 100%);
  border-color: var(--accent-cyan);
  box-shadow: 0 10px 40px -10px rgba(0, 240, 255, 0.25);
  transform: translateY(-6px);
}

.pricing-card.featured::before {
  content: '黄金推荐选择';
  position: absolute;
  top: 16px; right: 20px;
  font-family: var(--font-sharp);
  font-size: 0.7rem;
  color: #0a0c10;
  background: var(--accent-cyan);
  padding: 0.2rem 0.8rem;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  font-weight: 700;
}

.plan-header {
  margin-bottom: 1.5rem;
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.plan-target {
  font-size: 0.85rem;
  color: var(--text-dim);
  min-height: 2.5rem;
}

.plan-price-box {
  margin: 1.5rem 0;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.plan-currency {
  font-size: 1.2rem;
  color: var(--accent-cyan);
  font-weight: 700;
}

.plan-price {
  font-family: var(--font-sharp);
  font-size: 2.8rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.plan-period {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.plan-features {
  list-style: none;
  margin: 1.5rem 0 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
}

.plan-features li svg {
  color: var(--accent-cyan);
  flex-shrink: 0;
}

/* USER PERSONA GROUPS */
.personas-section {
  padding: 100px 0;
}

.persona-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.persona-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-crease);
  padding: 1.8rem;
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
  transition: all 0.3s var(--ease-origami);
}

.persona-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
}

.persona-badge {
  font-family: var(--font-sharp);
  font-size: 0.75rem;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
  display: block;
}

.persona-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.persona-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* USER REVIEWS CAROUSEL */
.reviews-section {
  padding: 100px 0;
  background: rgba(10, 12, 16, 0.95);
  position: relative;
}

.reviews-carousel-container {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  padding: 2rem 0;
}

.reviews-track {
  display: flex;
  transition: transform 0.5s var(--ease-origami);
}

.review-slide {
  min-width: 100%;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

.review-card-origami {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-origami);
  clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px);
  padding: 3rem 2.5rem;
  position: relative;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-depth);
}

.review-quote-mark {
  position: absolute;
  top: 20px; right: 30px;
  font-size: 4rem;
  color: rgba(0, 240, 255, 0.08);
  font-family: serif;
  line-height: 1;
  pointer-events: none;
}

.review-stars {
  color: var(--accent-gold);
  margin-bottom: 1.25rem;
  display: flex;
  gap: 0.25rem;
}

.review-text {
  font-size: 1.1rem;
  color: var(--text-main);
  line-height: 1.75;
  margin-bottom: 2rem;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-avatar {
  width: 50px; height: 50px;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-violet) 100%);
  clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #0a0c10;
}

.author-info h4 {
  font-size: 1rem;
  color: #ffffff;
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.carousel-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-crease);
  width: 44px; height: 44px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.carousel-btn:hover {
  background: var(--accent-cyan);
  color: #0a0c10;
  box-shadow: 0 0 15px var(--accent-cyan);
}

.carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.carousel-dot {
  width: 12px; height: 12px;
  background: rgba(255, 255, 255, 0.15);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  cursor: pointer;
  transition: all 0.3s ease;
}

.carousel-dot.active {
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  transform: scale(1.2);
}

/* ARTICLE HUB MATRIX */
.articles-section {
  padding: 100px 0;
  position: relative;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.article-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-crease);
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
  display: flex;
  flex-direction: column;
  transition: all 0.35s var(--ease-origami);
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-cyan);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.7), 0 0 20px rgba(0, 240, 255, 0.15);
}

.article-header-tag {
  background: rgba(0, 240, 255, 0.08);
  border-bottom: 1px solid rgba(0, 240, 255, 0.15);
  padding: 0.6rem 1.25rem;
  font-family: var(--font-sharp);
  font-size: 0.72rem;
  color: var(--accent-cyan);
}

.article-body {
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: #ffffff;
  margin-bottom: 0.8rem;
}

.article-snippet {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.article-link-btn {
  font-family: var(--font-sharp);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
}

/* Modal Article Viewer */
.article-modal {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: 2000;
  background: rgba(6, 8, 11, 0.92);
  backdrop-filter: blur(20px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.article-modal.active {
  display: flex;
}

.article-modal-content {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-origami);
  clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px);
  width: 100%;
  max-width: 960px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 3rem 2.5rem;
  position: relative;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9);
}

.modal-close-btn {
  position: absolute;
  top: 20px; right: 25px;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: #ffffff;
  width: 36px; height: 36px;
  clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.modal-close-btn:hover {
  background: var(--accent-cyan);
  color: #0a0c10;
}

/* ARTICLE STYLING */
.article-page-wrapper {
  padding: 140px 0 100px 0;
  max-width: 900px;
  margin: 0 auto;
}

.article-container {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-crease);
  clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px);
  padding: 3.5rem 3rem;
  box-shadow: var(--shadow-depth);
}

.article-breadcrumb {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-main-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-origami);
  padding-bottom: 1.5rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  margin: 2.5rem 0 1rem 0;
  padding-left: 1rem;
  border-left: 3px solid var(--accent-cyan);
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin: 1.8rem 0 0.8rem 0;
}

.article-content p {
  font-size: 1rem;
  color: var(--text-main);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.article-content ul, .article-content ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-muted);
}

.article-content li {
  margin-bottom: 0.6rem;
  line-height: 1.7;
}

.article-box-callout {
  background: rgba(0, 240, 255, 0.04);
  border-left: 3px solid var(--accent-cyan);
  padding: 1.25rem 1.5rem;
  margin: 1.8rem 0;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.article-box-callout p {
  margin-bottom: 0;
  font-size: 0.95rem;
  color: var(--text-main);
}

.article-table-wrapper {
  margin: 2rem 0;
  overflow-x: auto;
}

.article-faq-wrapper {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.article-faq-title {
  font-size: 1.4rem;
  color: #ffffff;
  margin-bottom: 1.5rem;
}

.article-faq-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.article-faq-q {
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.article-faq-a {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.article-internal-links {
  margin-top: 3rem;
  padding: 1.5rem;
  background: rgba(138, 43, 226, 0.05);
  border: 1px solid rgba(138, 43, 226, 0.2);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.article-internal-links h4 {
  font-size: 1rem;
  color: #ffffff;
  margin-bottom: 0.8rem;
}

.article-internal-links ul {
  list-style: disc;
  margin-left: 1.25rem;
}

/* MAIN LANDING PAGE FAQ (ACCORDION) */
.faq-section {
  padding: 100px 0;
}

.accordion-container {
  max-width: 900px;
  margin: 0 auto;
}

.accordion-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-crease);
  margin-bottom: 1rem;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  overflow: hidden;
  transition: all 0.3s ease;
}

.accordion-header {
  padding: 1.5rem 1.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  user-select: none;
}

.accordion-header:hover {
  background: rgba(0, 240, 255, 0.04);
  color: var(--accent-cyan);
}

.accordion-icon {
  width: 24px; height: 24px;
  border: 1px solid var(--border-origami);
  clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  flex-shrink: 0;
  color: var(--accent-cyan);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
  background: var(--accent-cyan);
  color: #0a0c10;
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-origami), padding 0.4s ease;
  padding: 0 1.8rem;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.75;
}

.accordion-item.active .accordion-body {
  max-height: 400px;
  padding: 0 1.8rem 1.5rem 1.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* FOOTER */
.footer {
  background: #06080b;
  border-top: 1px solid var(--border-crease);
  padding: 80px 0 40px 0;
  position: relative;
  z-index: 10;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-sharp);
  font-size: 0.9rem;
  color: #ffffff;
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { height: 380px; }
  .origami-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; }
  .persona-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .hero-title { font-size: 2.4rem; }
  .origami-grid { grid-template-columns: 1fr; }
  .persona-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .mouse-cursor-glow, .mouse-cursor-dot { display: none; }
}