/* 学期版主题 — 2026-08-11 子瞻
   替代 summer-theme.css，提供学期风格默认配色
   风格：清爽、浅色、低饱和，留出空间给 tailwind 和页面 inline style */
:root {
  --c-ink: #1f2937;
  --c-ink-soft: #6b7280;
  --c-bg: #f3f4f6;
  --c-card: #ffffff;
  --c-border: #e5e7eb;
  --c-primary: #2563eb;
  --c-primary-soft: #dbeafe;
  --c-bronze: #4b5563;
  --c-bronze-deep: #1f2937;
  --c-stone-light: #d1d5db;
  --c-gold: #fbbf24;
  --c-gold-soft: #fef3c7;
  --c-water: #6b7280;
  --school-text-secondary: #6b7280;
}
body { color: var(--c-ink); background: var(--c-bg); font-family: 'Microsoft YaHei','Arial',sans-serif; }
body.school-bg { background: var(--c-bg); }
.mode-bar { background: #1f2937; color: #fff; padding: 8px 16px; display: flex; justify-content: space-between; align-items: center; }
.mode-bar a { color: #fff; text-decoration: none; margin-left: 12px; font-size: 13px; }
.mode-tag { background: rgba(255,255,255,0.1); padding: 4px 10px; border-radius: 4px; font-weight: 600; }
.decor-left, .decor-right { display: none; } /* 隐藏暑假装饰元素 */
.tab-btn.active { border-bottom: 3px solid var(--c-primary); color: var(--c-primary); }