/* ══════════════════════════════════════════════════════
 *  书桌伙伴 · 共享样式(目前主要给登录页用)
 *
 *  这是"家里的黑板"那套视觉的变量定义:
 *    深绿板面 + 粉笔白 + 粉笔黄强调 + 红笔批改色
 *  主界面(index/upload)把样式内联在页面里,便于单文件分发;
 *  这里放的是跨页面共用的底色和字体。
 * ══════════════════════════════════════════════════════ */

:root{
  /* 黑板 */
  --board:#26352E;
  --board-deep:#1E2B25;
  --board-lift:#2E4038;
  --edge:#43584C;
  --edge-soft:#35473E;
  /* 粉笔 */
  --chalk:#EDF1EA;
  --chalk-dim:#A9B9AE;
  --chalk-faint:#74877B;
  /* 彩色粉笔 + 红笔 */
  --yellow:#E9C868;
  --red:#E4837A;
  --green:#8FD79A;

  --serif:"Noto Serif CJK SC","Noto Serif CJK","Source Han Serif SC","Songti SC",serif;
  --sans:"Noto Sans CJK SC","Noto Sans CJK","Source Han Sans SC","PingFang SC","Helvetica Neue",Arial,sans-serif;
}

*{ box-sizing:border-box; }

body{
  font-family:var(--sans);
  color:var(--chalk);
  background:
    repeating-linear-gradient(114deg, rgba(255,255,255,.014) 0 2px, rgba(255,255,255,0) 2px 6px),
    radial-gradient(120% 90% at 14% -10%, #2D4037 0%, #26352E 46%, #1D2A24 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}