/* Shopify Dawn–style tokens & reset（静态站，非 Liquid） */
:root {
  --page-width: 1200px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --color-base: #121212;
  --color-base-rgb: 18, 18, 18;
  --color-bg: #ffffff;
  --color-bg-subtle: #f6f6f6;
  --color-border: rgba(var(--color-base-rgb), 0.12);
  --color-muted: rgba(var(--color-base-rgb), 0.65);
  --color-accent: #121212;
  --radius: 6px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(var(--color-base-rgb), 0.06);
  --shadow-hover: 0 8px 24px rgba(var(--color-base-rgb), 0.08);
  --font-body: "Noto Sans SC", "Inter", system-ui, -apple-system, sans-serif;
  --font-heading: var(--font-body);
  --font-mono: ui-monospace, "Cascadia Code", "IBM Plex Mono", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

html.js-menu-open,
html.js-menu-open body {
  overflow: hidden;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: calc(1 + 0.6);
  color: var(--color-base);
  background: var(--color-bg);
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:hover {
  opacity: 0.85;
}

:focus-visible {
  outline: 2px solid var(--color-base);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 0.75rem 1rem;
  background: var(--color-base);
  color: #fff;
}

.skip-link:focus {
  left: var(--gutter);
  top: 0.5rem;
}

.page-width {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}