:root {
  --bg: #fbf7ee;
  --bg-alt: #ffffff;
  --fg: #1f1a15;
  --fg-muted: #6b6156;
  --accent: #A24E42;
  --accent-2: #2f5d63;
  --border: rgba(30, 24, 20, 0.08);
  --shadow: 0 4px 20px rgba(30, 24, 20, 0.06);
  --radius: 14px;
  --max-w: 720px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
          "Helvetica Neue", Arial, "PingFang SC", "Noto Sans SC",
          "Hiragino Sans", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17130e;
    --bg-alt: #1f1a13;
    --fg: #f0e6d5;
    --fg-muted: #a1968a;
    --accent: #d95f57;
    --accent-2: #5eb8c1;
    --border: rgba(240, 230, 213, 0.08);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 20px 60px;
}

header.site {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}

header.site .logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: block;
  object-fit: cover;
}

header.site .name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

nav.site {
  margin-left: auto;
  display: flex;
  gap: 18px;
}
nav.site a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
nav.site a:hover, nav.site a.active { color: var(--accent); }

h1 {
  font-size: 30px;
  line-height: 1.2;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
h2 {
  font-size: 20px;
  margin: 32px 0 10px;
  letter-spacing: -0.01em;
}
h3 {
  font-size: 16px;
  margin: 22px 0 6px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

p, ul, ol { margin: 0 0 14px; }
ul, ol { padding-left: 22px; }
li { margin-bottom: 4px; }

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

code {
  background: var(--bg-alt);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

.meta {
  color: var(--fg-muted);
  font-size: 14px;
  margin-bottom: 24px;
}

.lang-switch {
  display: inline-flex;
  gap: 6px;
  background: var(--bg-alt);
  padding: 4px;
  border-radius: 999px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.lang-switch a {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  color: var(--fg-muted);
}
.lang-switch a.active {
  background: var(--accent);
  color: #fff;
}

.card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow);
  margin: 16px 0;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
  text-decoration: none;
  margin: 8px 0;
}
.contact-btn:hover { opacity: 0.9; }

footer.site {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--fg-muted);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.hero {
  text-align: center;
  padding: 32px 0 8px;
}
.hero .tagline {
  color: var(--fg-muted);
  font-size: 18px;
  max-width: 520px;
  margin: 0 auto 24px;
}
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-2);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 32px 0;
}
.feature h3 {
  color: var(--fg);
  text-transform: none;
  letter-spacing: 0;
  font-size: 15px;
  margin: 0 0 6px;
  font-weight: 600;
}
.feature p {
  font-size: 14px;
  color: var(--fg-muted);
  margin: 0;
}