/* Hallmark · genre: editorial · theme: Anthropic-brand · design-system: design.md · designed-as-app
 * almanac-tokens.css — linxiexie.com 域统一设计系统(与 paper.linxiexie.com 同源)
 * palette: Anthropic official (#faf9f5 / #141413 / #d97757) · display=Fraunces · body=IBM Plex Sans
 */

@font-face {
  font-family: "Fraunces";
  src: url("/fonts/fraunces-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Fraunces";
  src: url("/fonts/fraunces-600.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("/fonts/plexsans-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("/fonts/plexsans-600.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jbmono-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}

:root {
  /* —— Anthropic 官方品牌色:米白 + 墨 + 赤陶橙 —— */
  --color-paper: #faf9f5;
  --color-paper-2: #f0eee7;
  --color-paper-3: #e3dacc;   /* 深区块:官网实测的第三档 */
  --color-rule: #141413;   /* 墨色分隔线:官网用法 */
  --color-rule-soft: #d5d2c6;   /* 弱边框:框区块用 */
  --color-neutral: #767368;
  --color-muted: #56544e;
  --color-ink: #141413;
  --color-accent: #d97757;
  --color-accent-text: #B74C29;   /* 文字用:4.89:1 */
  --color-accent-soft: #f9ece6;
  --color-focus: #c25f3d;

  --font-display: "Fraunces", "Songti SC", "Noto Serif SC", "STSong", "SimSun", ui-serif, serif;
  --font-body: "IBM Plex Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "PingFang SC", ui-monospace, "SF Mono", Menlo, monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1.0625rem;
  --text-md: 1.375rem;
  --text-lg:   1.4375rem;
  --text-xl:   1.75rem;
  --text-display: clamp(2rem, 3.4vw + 0.9rem, 2.875rem);

  --space-2xs: 0.25rem;
  --space-xs:  0.5rem;
  --space-sm:  0.75rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  --rule-hair: 1px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-micro: 100ms;
  --dur-short: 190ms;
}

html { overflow-x: clip; }
body {
  overflow-x: clip;
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

::selection { background: var(--color-accent-soft); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 100ms !important; }
}