@import url("https://fonts.googleapis.com/css2?family=DotGothic16&family=Noto+Sans+JP:wght@400;700;900&display=swap");:root{--bg:#e8f5e9;--bg2:#c8e6c9;--card:#fff;--card-border:#4caf50;--card-hover:#f1f8e9;--text:#1b5e20;--text-light:#558b2f;--accent:#ff6f00;--accent2:#e53935;--teacher-bg:#ccc;--shadow:rgba(0,0,0,.15);--desk-bg:#fff9c4}*{box-sizing:border-box;margin:0;padding:0}body,html{font-family:Noto Sans JP,sans-serif;color:var(--text)}.app-wrapper,body,html{background:var(--bg);min-height:100vh}.app-wrapper{display:flex;flex-direction:column;align-items:center;padding:24px 16px}