:root {
  --primary: #355872;
  --primary-hover: #7aaace;
  --primary-light: #9cd5ff;
  --bg: #f7f8f0;
  --bg-secondary: #eaeae0;
  --text: #1f2937;
  --text-secondary: #4b5563;
  --border: #d1d5db;
  --radius: 0.75rem;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1f2e;
    --bg-secondary: #243044;
    --text: #f9fafb;
    --text-secondary: #9ca3af;
    --border: #374151;
  }
}

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

body {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 0.5rem;
}

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

.nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--primary);
}

.nav .nav-link.lang-toggle {
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--primary);
  border-radius: 9999px;
  color: var(--primary);
  font-weight: 600;
  transition: all 0.2s;
}

.nav .nav-link.lang-toggle:hover {
  background: var(--primary);
  color: white;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 6rem 0;
}

.gradient-text {
  background: linear-gradient(
    135deg,
    var(--primary-light) 0%,
    var(--primary) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
}

.hero-stats {
  display: flex;
  gap: 3rem;
}

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

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.extension-preview {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}

.preview-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.preview-dots {
  display: flex;
  gap: 0.375rem;
}

.preview-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border);
}

.preview-dots span:first-child {
  background: #ef4444;
}

.preview-dots span:nth-child(2) {
  background: #f59e0b;
}

.preview-dots span:last-child {
  background: #22c55e;
}

.preview-title {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-left: auto;
}

.preview-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.preview-input,
.preview-output {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.preview-input label,
.preview-output label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.preview-input textarea,
.preview-output textarea {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--bg);
  font-size: 0.875rem;
  resize: none;
  min-height: 80px;
}

.preview-actions {
  display: flex;
  gap: 0.5rem;
}

.preview-btn {
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
}

.preview-actions select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--bg);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
}

.features {
  padding: 6rem 0;
}

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

.feature-card {
  padding: 2rem;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.modes {
  padding: 8rem 0;
  background: var(--bg-secondary);
}

.modes-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  padding: 0 1rem;
}

.mode-item {
  padding: 1.5rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.mode-item h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.mode-item p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.installation {
  padding: 6rem 0;
}

.install-steps {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.install-step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.step-number {
  width: 3rem;
  height: 3rem;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.step-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.browser-links {
  display: flex;
  gap: 1rem;
}

.browser-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s;
}

.browser-btn:hover {
  background: var(--border);
  transform: translateY(-2px);
}

.browser-btn img {
  width: 24px;
  height: 24px;
}

.usage {
  background: var(--bg-secondary);
}

.usage .section-title {
  text-align: center;
  margin-bottom: 1rem;
}

.usage .section-intro {
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem;
  font-size: 1.125rem;
}

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

.usage-card {
  text-align: center;
  padding: 2rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.usage-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.usage-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.usage-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.self-hosting {
  background: var(--bg-secondary);
}

.section-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.self-hosting .section-title {
  text-align: center;
  margin-bottom: 1rem;
}

.self-hosting .section-intro {
  text-align: center;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 3rem;
  font-size: 1.125rem;
}

.subsection {
  margin-bottom: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--border);
}

.subsection:first-of-type {
  border-top: none;
  padding-top: 0;
}

.subsection-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.hosting-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.hosting-feature {
  background: var(--bg);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-align: center;
}

.hosting-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  display: block;
}

.hosting-feature h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.hosting-feature p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.setup-guide {
  background: var(--bg);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

.setup-guide h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.setup-step {
  margin-bottom: 1.5rem;
}

.setup-step:last-child {
  margin-bottom: 0;
}

.setup-step h4 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.setup-step > p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0;
}

.code-block {
  background: #1a1a2e;
  border: 1px solid #2d2d44;
  color: #e0e0e0;
  padding: 1rem;
  border-radius: var(--radius);
  font-family: "Fira Code", "Consolas", "Monaco", monospace;
  font-size: 0.8125rem;
  overflow-x: auto;
  line-height: 1.6;
  margin-top: 0.75rem;
}

.code-block code {
  display: block;
  white-space: pre-wrap;
  word-break: break-all;
}

.providers-section {
  background: var(--bg);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
}

.providers-section h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.provider-group {
  margin-bottom: 1.5rem;
}

.provider-group h4 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
  color: var(--primary);
}

.provider-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.provider-list li {
  padding: 0.5rem 0;
  font-size: 0.9375rem;
}

.provider-list li strong {
  color: var(--text);
}

.provider-config-example {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.provider-config-example h4 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.security-note {
  background: linear-gradient(
    135deg,
    rgba(53, 88, 114, 0.1),
    rgba(122, 170, 206, 0.1)
  );
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.security-note h4 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.security-note ul {
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.security-note li {
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.9375rem;
}

.security-note li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

.security-note code {
  background: var(--bg-secondary);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  font-family: "Fira Code", "Consolas", monospace;
  font-size: 0.8125rem;
}

.cta {
  padding: 6rem 0;
  text-align: center;
}

.cta h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-logo {
  width: 48px;
  height: 48px;
  border-radius: 0.5rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.footer-links h4 {
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.made-with {
  color: var(--primary);
}

@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 1rem;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding: 4rem 0;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

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

  .modes-list {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .browser-links {
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .browser-btn {
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
  }

  .browser-btn img {
    width: 20px;
    height: 20px;
  }
}