/* ============================================
   Reset & Base —— 门户与 404 页共用
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #ffffff;
  --bg-soft: #fafafa;
  --ink: #0a0a0a;
  --ink-2: #6b7280;
  --ink-3: #9ca3af;
  --line: #ececec;
  --line-strong: #d4d4d4;
  --hover: #f7f7f7;

  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html, body { min-height: 100%; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}

::selection {
  background: #0a0a0a;
  color: #fff;
}

a { color: inherit; text-decoration: none; }