:root {
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-accent: #8a6d3b;
  --color-border: #e8e5e0;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1100px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #12100e;
    --color-surface: #1b1917;
    --color-text: #f5f3f0;
    --color-text-muted: #b3aea6;
    --color-accent: #c9a869;
    --color-border: #2c2925;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: rgba(250, 249, 247, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background-color: rgba(18, 16, 14, 0.85);
  }
}

.header-inner {
  display: flex;
  align-items: center;
  height: 72px;
}

.logo {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero {
  min-height: calc(100vh - 72px - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-inner {
  padding-top: 64px;
  padding-bottom: 64px;
}

.hero-title {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--color-text-muted);
  margin: 0;
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    height: 64px;
  }
}