/* 学员端 UI 设置：字号 + 夜间/护眼（不影响管理端和外部页面） */

/* ── 字号：小 / 中（默认）/ 大 ── */
html[data-fontsize="small"] body.portal-learn { font-size: 15px; }
html[data-fontsize="large"] body.portal-learn { font-size: 19px; }

/* ── 夜间 / 护眼：把学员端原版暗化成低亮深色 ── */
html[data-night="1"] body.portal-learn {
  --paper: #12101c;
  --card: #1b1830;
  --ink: #e7e2f5;
  --muted: #a49cc4;
  --line: #332e52;
  --sky: #211c38;
  --accent: #2aa383;
  --accent-2: #d97b4a;
  --danger: #ff8a8a;
  --ok: #7fe0a6;
  background: var(--paper);
}
html[data-night="1"] body.portal-learn .bg-fx {
  background:
    radial-gradient(1000px 520px at 12% -8%, rgba(60, 50, 110, .28) 0%, transparent 55%),
    radial-gradient(900px 480px at 92% 8%, rgba(90, 60, 120, .20) 0%, transparent 50%),
    linear-gradient(165deg, #171226 0%, #12101c 55%, #0e0c17 100%);
}
html[data-night="1"] body.portal-learn .bg-med-cross {
  background:
    linear-gradient(#2aa383, #2aa383) center/18% 70% no-repeat,
    linear-gradient(#2aa383, #2aa383) center/70% 18% no-repeat;
}
html[data-night="1"] body.portal-learn .ecg-path { stroke: rgba(42, 163, 131, .22); }
html[data-night="1"] body.portal-learn .footer,
html[data-night="1"] body.portal-learn .footer--fixed {
  background: rgba(18, 16, 28, .92);
}