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

:root {
  --color-bg: #0f0f1a;
  --color-bg-alt: #1a1a2e;
  --color-text: #e8e8f0;
  --color-text-muted: #9a9ab0;
  --color-primary: #818cf8;
  --color-primary-dark: #6366f1;
  --color-primary-light: #4338ca;
  --color-border: #2a2a40;
  --color-card-bg: #1e1e32;
  --color-card-shadow: rgba(0, 0, 0, 0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --container-width: 1140px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --transition: 0.2s ease;
}


html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
}

/* === Container === */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* === Header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  text-decoration: none;
}

.nav-logo img {
  border-radius: 6px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 24px;
  flex: 1;
}

.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

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


/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: var(--radius);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* === Sections === */
.section {
  padding: 96px 0;
}

.section:nth-child(even) {
  background: var(--color-bg-alt);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  margin-bottom: 56px;
}

/* === Hero === */
.hero {
  padding: 80px 0 96px;
  background: var(--color-bg-alt);
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.hero-tagline {
  font-size: 1rem;
  color: var(--color-primary);
  margin-bottom: 32px;
  font-weight: 500;
}

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

.hero-image img {
  border-radius: var(--radius);
}

/* === How It Works === */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.step {
  text-align: center;
  padding: 24px 16px;
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* === About === */
.about-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
  max-width: 900px;
  margin: 0 auto;
}

.about-image img {
  border-radius: var(--radius);
  width: 100%;
}

.about-lead {
  font-size: 1.15rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 20px;
}

.about-text p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-text strong {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about-image {
    max-width: 200px;
    margin: 0 auto;
  }

  .about-text {
    text-align: left;
  }
}

/* === Features === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
  box-shadow: 0 8px 30px var(--color-card-shadow);
  transform: translateY(-2px);
}

.feature-icon {
  color: var(--color-primary);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* === Models === */
.models-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.model-category h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}

.model-list {
  list-style: none;
}

.model-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.model-list li:last-child {
  border-bottom: none;
}

.model-list strong {
  font-size: 1rem;
}

.model-list span {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* === Pricing === */
.pricing-card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--color-card-bg);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  overflow: hidden;
}

.pricing-header {
  text-align: center;
  padding: 40px 32px 32px;
}

.pricing-header h3 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.pricing-amount {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.pricing-header p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.pricing-breakdown {
  padding: 32px;
  background: var(--color-bg-alt);
}

.pricing-breakdown h4 {
  font-size: 0.95rem;
  margin-bottom: 16px;
  color: var(--color-text-muted);
}

.pricing-breakdown ul {
  list-style: none;
}

.pricing-breakdown li {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 0.9rem;
}

.pricing-total {
  border-top: 2px solid var(--color-border);
  margin-top: 8px;
  padding-top: 12px !important;
  font-weight: 700;
  font-size: 1rem !important;
}

.pricing-note {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* === Download === */
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 520px;
  margin: 0 auto 32px;
}

.download-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 24px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition);
}

.download-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 30px var(--color-card-shadow);
  color: var(--color-text);
}

.download-card svg {
  color: var(--color-primary);
}

.download-platform {
  font-weight: 700;
  font-size: 1.1rem;
}

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

.download-requirements {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* === FAQ === */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
  padding: 20px 0;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-text-muted);
  transition: transform var(--transition);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 0 20px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* === Footer === */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 64px 0 0;
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  margin-bottom: 12px;
}

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

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

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

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

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: 20px 24px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

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

/* === Page Content === */
.page-content {
  padding: 64px 0;
}

.page-content h1 {
  font-size: 2.2rem;
  margin-bottom: 32px;
}

.page-content h2 {
  font-size: 1.6rem;
  margin-top: 48px;
  margin-bottom: 16px;
}

.page-content h3 {
  font-size: 1.2rem;
  margin-top: 32px;
  margin-bottom: 12px;
}

.page-content p {
  margin-bottom: 16px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.page-content ul, .page-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.page-content li {
  margin-bottom: 8px;
  color: var(--color-text-muted);
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.page-content th, .page-content td {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
  font-size: 0.9rem;
}

.page-content th {
  background: var(--color-bg-alt);
  font-weight: 600;
}

.page-content code {
  background: var(--color-bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}

.page-content a {
  color: var(--color-primary);
}

.page-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 48px 0;
}

/* === Alert === */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.alert-warning {
  background: #fef3e2;
  color: #92400e;
}

.alert-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  margin-top: 2px;
}

/* === Blog === */
.post-card {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.post-card h2 {
  font-size: 1.3rem;
  margin: 0 0 8px;
}

.post-card h2 a {
  color: var(--color-text);
}

.post-card h2 a:hover {
  color: var(--color-primary);
}

.post-card time {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.post-card p {
  margin-top: 8px;
  color: var(--color-text-muted);
}

/* === Screenshots === */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.screenshot-item {
  display: block;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.screenshot-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--color-card-shadow);
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
}

.screenshot-caption {
  display: block;
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* === Lightbox === */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lightbox.open {
  display: flex;
}

.lightbox-image {
  max-width: 100%;
  max-height: 100%;
  border-radius: var(--radius);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
  opacity: 0.8;
  transition: opacity var(--transition);
}

.lightbox-close:hover {
  opacity: 1;
}

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

  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-image {
    order: -1;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 12px;
  }

  .nav-links.open {
    display: flex;
  }

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

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

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

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

  .download-grid {
    grid-template-columns: 1fr;
    max-width: 320px;
  }

  .footer-container {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: repeat(3, 1fr);
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .footer-links {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
}