:root {
  --bg-primary: #0a1128;
  --bg-secondary: #0f1535;
  --bg-card: #141c45;
  --text-primary: #e0e6ed;
  --text-secondary: #a3b1c6;
  --accent-blue: #3a86ff;
  --accent-blue-hover: #2a6fff;
  --accent-glow: rgba(58, 134, 255, 0.15);
  --accent-glow-strong: rgba(58, 134, 255, 0.3);
  --border-color: #2a3559;
  --border-hover: #3d4d7e;
  --gray-dark: #0d1432;
  --gray-light: #5c677d;
  --white: #ffffff;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none;
}

/* Custom Cursor */
.cursor-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  background: var(--accent-blue);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s;
}

.cursor-ring {
  position: fixed;
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--accent-blue);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease-out, width 0.3s, height 0.3s, border-color 0.3s;
}

.cursor-ring.hovering {
  width: 48px;
  height: 48px;
  border-color: var(--accent-blue-hover);
  background: var(--accent-glow);
}

/* Progress Bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), #5c9eff);
  width: 0%;
  z-index: 10000;
  box-shadow: 0 0 10px var(--accent-glow-strong);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 17, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border-color);
  background: rgba(10, 17, 40, 0.95);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--white);
  font-weight: 700;
  font-size: 1.25rem;
  transition: transform var(--transition);
}

.logo:hover {
  transform: scale(1.02);
}

.logo .icon {
  width: 28px;
  height: 28px;
  color: var(--accent-blue);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color var(--transition);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: width var(--transition);
}

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

.nav a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: none;
  color: var(--text-primary);
}

.menu-toggle .icon {
  width: 28px;
  height: 28px;
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header__label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-blue);
  margin-bottom: 12px;
  padding: 4px 14px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  background: var(--bg-card);
}

.section-header h2 {
  font-size: 2.25rem;
  margin-bottom: 16px;
  color: var(--white);
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Hero */
.hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
      radial-gradient(circle at 80% 20%, var(--accent-glow), transparent 50%),
      radial-gradient(circle at 20% 80%, rgba(58, 134, 255, 0.08), transparent 50%);
  z-index: 0;
}

.hero__container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-blue);
  margin-bottom: 24px;
  padding: 6px 16px;
  border: 1px solid var(--accent-blue);
  border-radius: 20px;
  background: var(--accent-glow);
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--white);
  letter-spacing: -0.5px;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 540px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.btn__icon {
  width: 18px;
  height: 18px;
  transition: transform var(--transition);
}

.btn:hover .btn__icon {
  transform: translateX(4px);
}

.btn--primary {
  background: var(--accent-blue);
  color: var(--white);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn--primary:hover {
  background: var(--accent-blue-hover);
  box-shadow: 0 6px 30px var(--accent-glow-strong);
  transform: translateY(-2px);
}

.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn--secondary:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: var(--accent-glow);
}

.hero__visual {
  position: relative;
}

.hero__visual-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle, var(--accent-glow-strong), transparent 70%);
  border-radius: var(--radius-lg);
  z-index: 0;
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

.hero__visual img,
.about__visual img,
.contact__visual img {
  position: relative;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  z-index: 1;
}

/* Features */
.features {
  padding: 100px 0;
  background: var(--bg-secondary);
  position: relative;
}

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

.feature-card {
  background: var(--bg-card);
  padding: 36px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-blue);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.feature-card:hover::before {
  transform: translateX(100%);
}

.feature-card__icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--accent-glow);
  border-radius: var(--radius);
  margin-bottom: 24px;
  transition: transform var(--transition);
}

.feature-card:hover .feature-card__icon-wrap {
  transform: scale(1.1) rotate(-5deg);
}

.feature-card__icon {
  width: 28px;
  height: 28px;
  color: var(--accent-blue);
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--white);
}

.feature-card p {
  color: var(--text-secondary);
}

/* About */
.about {
  padding: 100px 0;
}

.about__container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.about__visual {
  position: relative;
}

.about__visual-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  border-radius: var(--radius-lg);
  z-index: 0;
}

.about__text .section-header__label {
  margin-bottom: 16px;
}

.about h2 {
  font-size: 2.25rem;
  margin-bottom: 24px;
  color: var(--white);
}

.about p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* Guide */
.guide {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.guide__list {
  list-style: none;
  counter-reset: step;
  max-width: 800px;
  margin: 0 auto;
}

.guide__list li {
  display: flex;
  gap: 24px;
  padding: 28px;
  margin-bottom: 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}

.guide__list li:hover {
  border-color: var(--accent-blue);
  transform: translateX(8px);
}

.guide__step-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-blue), #5c9eff);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.guide__step-content h3 {
  color: var(--white);
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.guide__step-content p {
  color: var(--text-secondary);
}

/* Comparison */
.comparison {
  padding: 100px 0;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
}

th, td {
  padding: 20px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background: var(--gray-dark);
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
  position: sticky;
  top: 0;
}

td {
  color: var(--text-secondary);
}

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

tr {
  transition: background var(--transition);
}

tr:hover td {
  background: rgba(58, 134, 255, 0.05);
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

.badge--good {
  background: rgba(58, 134, 255, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(58, 134, 255, 0.3);
}

.badge--neutral {
  background: rgba(163, 177, 198, 0.1);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

/* FAQ */
.faq {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color var(--transition);
}

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

.faq-item__header {
  width: 100%;
  background: none;
  border: none;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: none;
  text-align: left;
}

.faq-item__header h3 {
  color: var(--white);
  font-size: 1.1rem;
  margin: 0;
}

.faq-item__icon {
  width: 24px;
  height: 24px;
  color: var(--accent-blue);
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition);
  padding: 0 24px;
}

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

.faq-item__body p {
  color: var(--text-secondary);
}

/* Contact */
.contact {
  padding: 100px 0;
}

.contact__container {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  align-items: center;
}

.contact__visual {
  position: relative;
}

.contact__visual-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle, var(--accent-glow), transparent 70%);
  border-radius: var(--radius-lg);
  z-index: 0;
}

.contact h2 {
  font-size: 2.25rem;
  margin-bottom: 24px;
  color: var(--white);
}

.contact p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* Footer */
.footer {
  background: var(--gray-dark);
  padding: 60px 0 0;
  border-top: 1px solid var(--border-color);
}

.footer__container {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer__brand .logo {
  margin-bottom: 16px;
}

.footer__brand p {
  color: var(--text-secondary);
}

.footer__links h4,
.footer__disclaimer h4 {
  color: var(--white);
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer__links {
  display: flex;
  flex-direction: column;
}

.footer__links a {
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 8px;
  transition: color var(--transition), padding-left var(--transition);
}

.footer__links a:hover {
  color: var(--accent-blue);
  padding-left: 4px;
}

.footer__disclaimer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer__bottom {
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
  text-align: center;
}

.footer__bottom p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Scroll Animations */
[data-animate] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 968px) {
  .hero__container,
  .about__container,
  .contact__container {
      grid-template-columns: 1fr;
      gap: 40px;
  }

  .features__grid {
      grid-template-columns: 1fr;
  }

  .footer__container {
      grid-template-columns: 1fr;
  }

  .hero h1 {
      font-size: 2.25rem;
  }
}

@media (max-width: 768px) {
  body {
      cursor: auto;
  }

  .cursor-dot,
  .cursor-ring {
      display: none;
  }

  .nav {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: var(--bg-primary);
      flex-direction: column;
      padding: 24px;
      border-bottom: 1px solid var(--border-color);
      gap: 20px;
  }

  .nav.active {
      display: flex;
  }

  .menu-toggle {
      display: block;
  }

  .hero h1 {
      font-size: 2rem;
  }

  .hero p {
      font-size: 1rem;
  }

  .btn {
      width: 100%;
      justify-content: center;
  }

  .hero__actions {
      flex-direction: column;
  }

  .section-header h2,
  .about h2,
  .contact h2 {
      font-size: 1.75rem;
  }

  .guide__list li {
      flex-direction: column;
      gap: 16px;
  }

  .guide__step-num {
      width: 40px;
      height: 40px;
      font-size: 1.1rem;
  }

  th, td {
      padding: 14px 16px;
      font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .hero {
      padding: 60px 0;
  }

  .features,
  .about,
  .guide,
  .comparison,
  .faq,
  .contact {
      padding: 60px 0;
  }

  .feature-card {
      padding: 24px;
  }
}