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

:root {
  --color-primary: #4a6fa5;
  --color-primary-dark: #3a5a8a;
  --color-text: #333;
  --color-text-light: #666;
  --color-bg: #fff;
  --color-bg-alt: #f8f9fa;
  --color-border: #e9ecef;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --max-width: 1100px;
}

html {
  scroll-behavior: smooth;
}

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

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

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

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.header__logo img {
  height: 40px;
  width: auto;
}

.header__github {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--color-text);
}

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

.header__github svg {
  width: 24px;
  height: 24px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 5rem 2rem 6rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero__tagline {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.hero__cta {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 1rem 2.5rem;
  border-radius: 6px;
  font-size: 1.125rem;
  font-weight: 600;
  transition: background 0.2s ease;
}

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

/* Features */
.features {
  background: var(--color-bg-alt);
  padding: 5rem 2rem;
}

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

.features__title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 3rem;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature {
  background: var(--color-bg);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.feature__icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feature__name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.feature__description {
  color: var(--color-text-light);
  font-size: 1rem;
}

/* Quick Start */
.quickstart {
  padding: 5rem 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.quickstart__title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.quickstart__subtitle {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 2.5rem;
}

.quickstart__code {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 2rem;
  border-radius: 8px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
}

.quickstart__code .comment {
  color: #6a9955;
}

.quickstart__code .command {
  color: #dcdcaa;
}

/* Footer */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 2rem;
  text-align: center;
}

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

.footer__github {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 1rem;
}

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

.footer__github svg {
  width: 20px;
  height: 20px;
}

.footer__copyright {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero__tagline {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1.1rem;
  }

  .hero {
    padding: 3rem 1.5rem 4rem;
  }

  .features,
  .quickstart {
    padding: 3rem 1.5rem;
  }

  .quickstart__code {
    padding: 1.5rem;
    font-size: 0.8rem;
  }
}