:root {
  --color-background: #05060a;
  --color-surface: #0e1117;
  --color-surface-alt: #161b22;
  --color-accent: #ff8c00;
  --color-accent-soft: rgba(255, 140, 0, 0.12);
  --color-primary: #ff8c00;
  --color-secondary: #2dd4bf;
  --color-text: #e6edf3;
  --color-muted: #9ba4b5;
  --color-border: rgba(230, 237, 243, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.22);
  --max-width: 1120px;
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  background: var(--color-background);
  color: var(--color-text);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
}

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

a:hover,
a:focus {
  color: var(--color-secondary);
}

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

section {
  position: relative;
}

.section {
  padding: 96px 24px;
}

.section-muted {
  background: var(--color-surface);
}

.section-accent {
  background: linear-gradient(135deg, rgba(255, 140, 0, 0.18), transparent 60%);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin: 0 0 12px;
}

.section-lead {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.hero {
  padding: 96px 24px 96px;
  background: radial-gradient(circle at 20% 20%, rgba(45, 212, 191, 0.18), transparent 55%),
    radial-gradient(circle at 80% 0%, rgba(255, 140, 0, 0.25), transparent 55%),
    linear-gradient(160deg, rgba(14, 17, 23, 0.6), rgba(5, 6, 10, 0.95));
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 48px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2.5rem, 3vw + 1rem, 3.8rem);
  margin: 0 0 12px;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 28px;
}

.hero-note {
  margin-top: 24px;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(45, 212, 191, 0.12);
  color: var(--color-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-visual {
  justify-self: end;
  width: min(500px, 100%);
}

.hero-visual-screenshot img {
  width: 100%;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-lg);
  display: block;
}

.hero-screenshot-button {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  display: block;
  cursor: pointer;
}

.hero-screenshot-button:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 4px;
  border-radius: 20px;
}

.terminal-card {
  background: rgba(8, 10, 16, 0.92);
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.04);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.dot-red {
  background: #ef4444;
}

.dot-yellow {
  background: #f59e0b;
}

.dot-green {
  background: #22c55e;
}

.terminal-body {
  padding: 24px;
  font-family: 'Fira Code', 'SFMono-Regular', 'Consolas', 'Liberation Mono', monospace;
  font-size: 0.95rem;
  line-height: 1.5;
  color: #7fffd4;
}

.terminal-body pre {
  margin: 0;
  white-space: pre-wrap;
}

.feature-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 18px;
}

.feature-bullets li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 22px;
  border-radius: 14px;
  background: rgba(15, 20, 28, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.5;
}

.feature-bullets li::before {
  content: '✔';
  font-size: 1.1rem;
  color: var(--color-secondary);
}

.card-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}


.gallery-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.gallery-item {
  background: rgba(12, 16, 24, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 18px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0;
  cursor: zoom-in;
}

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

.gallery-caption {
  padding: 18px 22px 22px;
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  z-index: 999;
}

.lightbox.open {
  display: flex;
}

.lightbox-content {
  max-width: min(1200px, 90vw);
  max-height: 90vh;
  background: #05070d;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.lightbox-content img {
  width: 100%;
  height: auto;
}

.lightbox-caption {
  padding: 18px 22px 22px;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.6;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: rgba(15, 20, 28, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.lightbox-close:hover {
  background: rgba(255, 140, 0, 0.12);
  border-color: rgba(255, 140, 0, 0.4);
  color: var(--color-primary);
}

.card {
  padding: 28px;
  border-radius: 18px;
  background: rgba(12, 16, 24, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.2s ease, border 0.2s ease;
}

.card a.btn {
  align-self: flex-start;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 140, 0, 0.4);
}

.card-icon {
  font-size: 2rem;
}

.card-title {
  margin: 0;
  font-size: 1.1rem;
}

.card-body {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.doc-card {
  position: relative;
  padding-top: 38px;
}

.doc-lang {
  position: absolute;
  top: 20px;
  left: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(45, 212, 191, 0.16);
  color: var(--color-secondary);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.doc-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.doc-card .btn {
  margin-top: auto;
}

.docs-grid {
  margin-top: 24px;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  background: rgba(10, 13, 20, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 24px;
  display: grid;
  gap: 8px;
}

.timeline-step {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-title {
  font-size: 1.15rem;
  margin: 0;
}

.timeline-body {
  margin: 0;
  color: var(--color-muted);
}

.quickstart-steps {
  counter-reset: quickstart;
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: grid;
  gap: 20px;
}

.quickstart-steps li {
  counter-increment: quickstart;
  padding: 24px 28px;
  border-radius: 16px;
  background: rgba(12, 16, 22, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.04);
  position: relative;
  line-height: 1.6;
  color: var(--color-muted);
}

.quickstart-steps li::before {
  content: counter(quickstart, decimal-leading-zero);
  position: absolute;
  top: 18px;
  left: 18px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 140, 0, 0.18);
  color: var(--color-primary);
  font-weight: 600;
}

.quickstart-steps li strong {
  display: block;
  color: var(--color-text);
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.quickstart-steps li p {
  margin: 0 0 0 48px;
}

.quickstart-note {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.info-panels {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.info-panel {
  padding: 28px;
  border-radius: 18px;
  background: rgba(12, 18, 25, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: grid;
  gap: 12px;
}

.info-panel h3 {
  margin: 0;
  font-size: 1.15rem;
}

.info-panel p,
.info-panel ul {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.info-panel ul {
  padding-left: 18px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  background: rgba(12, 15, 22, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 18px 22px;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 1.05rem;
}

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

.faq-item summary::after {
  content: '＋';
  float: right;
  color: var(--color-secondary);
}

.faq-item[open] summary::after {
  content: '－';
}

.faq-item p {
  margin: 12px 0 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.download {
  display: flex;
  justify-content: center;
  text-align: center;
}

.download-content {
  max-width: 680px;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin: 32px 0 18px;
}

.download-note {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: #0b0c10;
  box-shadow: 0 12px 30px rgba(255, 140, 0, 0.3);
}

.btn-primary:hover,
.btn-primary:focus {
  transform: translateY(-1px);
  box-shadow: 0 16px 32px rgba(255, 140, 0, 0.4);
}

.btn-secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--color-text);
}

.btn-secondary:hover,
.btn-secondary:focus {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.btn-disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(5, 6, 10, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 1rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--color-accent);
  color: #05060a;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-list a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.nav-list a:hover,
.nav-list a:focus {
  color: var(--color-secondary);
}

.lang-switch {
  display: inline-flex;
  gap: 8px;
  margin-left: 16px;
}

.lang-option {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid transparent;
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  font-family: "Twemoji Mozilla", "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
  line-height: 1;
  cursor: pointer;
  transition: border 0.2s ease, transform 0.2s ease;
}

.lang-option.active,
.lang-option:hover {
  border-color: var(--color-secondary);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle-bar {
  width: 26px;
  height: 2px;
  background: #fff;
  display: block;
}

.site-footer {
  background: #040509;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 64px 24px 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto 32px;
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  justify-content: space-between;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .brand-mark {
  width: 42px;
  height: 42px;
  margin-bottom: 12px;
}

.footer-tagline {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.footer-columns {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}

.footer-column h3 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.footer-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.footer-column a {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.footer-column a:hover,
.footer-column a:focus {
  color: var(--color-secondary);
}

.footer-baseline {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: inline-flex;
  gap: 18px;
}

.footer-links a {
  color: var(--color-muted);
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--color-secondary);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1000px) {
  .hero {
    padding: 80px 20px 72px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-visual {
    justify-self: center;
  }

  .feature-bullets li {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 860px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    order: 3;
    width: 100%;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    background: rgba(5, 6, 10, 0.96);
    border-radius: 12px;
    padding: 18px;
    margin-top: 12px;
    display: none;
  }

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

@media (max-width: 640px) {
  .section {
    padding: 72px 18px;
  }

  .card {
    padding: 22px;
  }

  .timeline-item,
  .quickstart-steps li {
    padding: 22px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-baseline {
    flex-direction: column;
    align-items: flex-start;
  }
}