* { box-sizing: border-box; margin: 0; padding: 0; }
  .cal { padding: 1.5rem; width: 100%; margin: 0; background: #ffffff; border-radius: 5px; border: 0.5px solid #204da0; font-family: var(--font-sans); }
  .header-bar { height: 3px; background: #1B3FA0; border-radius: 99px; margin-bottom: 1.5rem; }
  .cal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.75rem; }
  .cal-title { display: flex; align-items: baseline; gap: 6px; flex: 1; }
  .cal-month, .cal-year { font-size: 1.3rem; font-weight: 600; color: #1B3FA0; }
  .nav-group { display: flex; gap: 6px; }
  .nav-btn { background: #1B3FA0; border: none; border-radius: 2px; width: 30px; height: 30px; cursor: pointer; color: #ffffff; font-size: 14px; display: flex; align-items: center; justify-content: center; transition: background 0.12s; }
  .nav-btn:hover { background: #162e7a; }
  .nav-btn i {color: #fff;}
  .cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; }
  .day-label { font-size: 10px; color: #1B3FA0; text-align: center; padding: 0 0 10px; font-weight: 500; letter-spacing: 0.07em; text-transform: uppercase; opacity: 0.6; }
  .day-cell { position: relative; aspect-ratio: 1; display: flex; align-items: center; justify-content: center; border-radius: 5px; transition: background 0.1s; cursor: default; border: 1.5px solid transparent; }
  .day-cell.has-note:hover { background: #EEF2FB; cursor: default; }
  .day-num { font-size: 16px; color: #5f5e5a; line-height: 1; user-select: none; }
  .day-cell.today { background: #EEF2FB; }
  .day-cell.today .day-num { color: #ffffff; font-weight: 700; }
  .day-cell.other-month .day-num { color: #d3d1c7; }
  .day-cell.note-Highschool { border-color: #3aa01b; }
  .day-cell.note-University { border-color: #0062f5; }
  .day-cell.note-Industrial { border-color: #E24B4A; }
  .day-cell.today.note-Highschool { background: #3aa01b; border-color: #3aa01b; }
  .day-cell.today.note-University { background: #0062f5; border-color: #0062f5; }
  .day-cell.today.note-Industrial { background: #E24B4A; border-color: #E24B4A; }
  .popup { position: absolute; z-index: 10; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%); min-width: 180px; max-width: 220px; background: #ffffff; border: 0.5px solid #d3d1c7; border-radius: 12px; padding: 10px 12px; pointer-events: none; box-shadow: 0 4px 16px rgba(27,63,160,0.08); }
  .popup::after { content: ''; position: absolute; top: 100%; left: 50%; transform: translateX(-50%); border: 5px solid transparent; border-top-color: #d3d1c7; }
  .popup-date { font-size: 10px; color: #b4b2a9; margin-bottom: 5px; text-transform: uppercase; letter-spacing: 0.07em; }
  .popup-note { font-size: 13px; color: #1a1a18; line-height: 1.5; }
  .popup-tag { display: inline-block; margin-top: 6px; font-size: 10px; padding: 2px 7px; border-radius: 2px; font-weight: 500; }
  .tag-Highschool { background: #065713; color: #fff; }
  .tag-University { background: #00258a; color: #fff; }
  .tag-Industrial { background: #7c1111; color: #fff; }
  .divider { border: none; border-top: 0.5px solid #e5e3dc; margin: 1.25rem 0 0; }
  .legend { display: flex; gap: 14px; padding-top: 1rem; }
  .legend-item { display: flex; align-items: center; gap: 6px; font-size: 11px; color: #7a7a7a; }
  .legend-swatch { width: 14px; height: 14px; border-radius: 2px; border-width: 1.5px; border-style: solid; }
  .sw-Highschool { border-color: #3aa01b; background: #EEF2FB; }
  .sw-University { border-color: #0062f5; background: #FFFBE6; }
  .sw-Industrial { border-color: #E24B4A; background: #FCEBEB; }